Installation-, operation

Transcription

20L, 25L, 31L
3152, 3161, 3467
GRABBLE LOADER
Installation-, operationmaintenance manual
NOKKA OY
Forest Line
PL 4, 40951 Muurame
Puhelin 044 7624 510
Telefax (014) 3100 206
Forest Line
FIN-40950 Muurame, Finland
Tel. +358 44 7624 510
Fax +358 44 3100 206
CONTENTS
Page
To the owner ...........................................................................................................1
Declaration of compliance with EC directives..........................................................1
1. Before use ................................................................................................... 2 - 4
Measurement units .........................................................................................2
Directions ........................................................................................................2
Serial number..................................................................................................2
Safety instructions..................................................................................... 2 - 3
Noise prevention .............................................................................................3
Minimum distances from live electric conductors ............................................4
Driving on a road.............................................................................................4
Inspection during use......................................................................................4
Structural changes ..........................................................................................4
2. Operating the machine ................................................................................ 5 - 20
Properties of the machine in brief ...................................................................5
Technical specifications ............................................................................ 5 - 6
Maximum lifting table ................................................................................ 7 - 8
Preparing for use ....................................................................................9 – 10
Fitting the lower arms of the tractor......................................................... 11-12
Removing the loader from the tractor hitch lower arms........................... 13-14
Attaching the loader to the Nokka forestry trailer ..........................................15
Dismounting the loader from the forestry trailer ............................................16
Inspection of assembly .................................................................................17
Working instructions......................................................................................18
Transport position ................................................................................... 19-20
3. Maintenance.............................................................................................. 21 - 24
Safety during maintenance work...................................................................21
General maintenance instructions.................................................................21
Lubrication instructions .................................................................................21
Adjusting the support bearing of gear rack ...................................................22
Powerless loader motions .............................................................................22
Hydraulics .....................................................................................................23
Changing hydraulic hose ..............................................................................23
How to order spare parts ..............................................................................24
Serial number................................................................................................24
Storage .........................................................................................................24
Disposal of the machine................................................................................24
Loading table ........................................................................................25 – 26
Warranty policy .............................................................................................27
Examples of calculating for stability determination........................................28
1
TO THE OWNER OF THE NOKKA LOADER
Congratulations on choosing one of the finest machines available! If you follow the
instructions contained in this booklet, the loader will provide you with a long and troublefree service. Familiarize yourself with this booklet before you start working with the
loader. If there are any problems, please contact your dealer or the manufacturer.
Yours faithfully,
Nokka Oy
EC DECLARATION OF CONFORMITY
Nokka Oy
PO Box 4
40951 MUURAME, FINLAND
The compiler of this technical document:
Petteri Nokkala
Teollisuustie 4
40951 MUURAME, FINLAND
guarantees that the Nokka loaders 20L, 25L, 31L, 3152, 3161 and 3467 on the market
is in accordance with the Machinery Directive 2006/42/EC and national regulations
which have been adapted to meet the directive’s requirements.
This guarantee applies to machines starting from serial number:
Nokka 20L, no 100
Nokka 25L, no 100
Nokka 31L, no 100
Nokka 3152, no 100
Nokka 3161, no 100
Nokka 3467, no 100
Muurame, Finland 11 December 2011
_________________________
Petteri Nokkala
Managing Director
2
1. BEFORE USE
MEASUREMENT UNITS
This Installation and Operating Manual utilises measurement units according to the
international SI measurement system.
DIRECTIONS
In this Installation and Operating Manual, the right and left side and front and rear end
of the machine are oriented from the driver perspective.
SERIAL NUMBER
Write down the serial number of your machine in the space reserved on page 26 of this
booklet. Be prepared to give the type and serial number of your machine in all enquiries
and orders relating to the machine.
SAFETY INSTRUCTIONS
NOTE!
The safety instructions in the booklet are marked with this sign. Read these instructions
with particular care.
1. Familiarize yourself with the operation manual and carefully read the safety
instructions and all labels on the machine. If the machine is to be used by another
party, make sure that the user reads the operating and safety instructions before
handing over the machine.
2. The operator must be at least 18 years old and in good health.
3. The operator must not be under the influence of any intoxicating substances or
medications.
4. Remove all loose parts from the machine which do not belong.
5. Fit the protective guards in place and ensure that they are always in place during
operation of the machine.
6. Get acquainted with all controls and instruments.
7. When the loader is to be serviced, cleaned or adjusted or when accessories are to
be mounted on it, place the booms of the loader in a suitable position and secure
them so that they cannot move. Turn off the tractor and set the parking brake.
8. Do not make any structural alterations in the loader that might compromise its safety
performance. It is forbidden to weld booms.
3
9. Do not use the machine for purposes for which it is not intended.
10. The danger area covers an area of 20 meters and in falling head use, 50 meters.
Also use extreme caution when using accessories, taking care that there is nobody
in the danger are. Always pay special attention if children are present.
11. Never leave the loader unattended (with or without a load) with the booms extended.
12. Do not wear loose or torn clothes when operating the loader.
13. Never go under the booms or load. Operate the loader only from the cab of the
tractor.
14. Observe safety distances from live electric conductors when using the machine.
15. After the first hour of operation, check all screws and nuts for tightness. Perform this
inspection on a regular basis during operation.
16. Inspect the hydraulic system for any leakages during operation and repair any faults
immediately. In concern for the environment, do not let any oil leak out.
17. When mounting the valve block please note that pressurized hydraulic hoses should
not be placed in the cab without any form of protection.
18. Use only original spare parts.
19. The controls of the loader have to be placed into the cab, which fulfils the
requirements.
20. It is forbidden to loosen support legs from the transport package before the loader is
fitted to the lower arms of the tractor - the loader will otherwise lose its stability.
Always use support legs during loader operation. Before starting work, be sure that
the combination is stable against tipping. Calculation instructions for determination
of stability can be found in the end of this booklet.
21. Use only original accessories.
NOISE PREVENTION
Continuous exposure to noise may cause hearing problems and even a loss of hearing.
Noise level in the workplace depends on noise insulation and the specific way the
valves are mounted. Use suitable ear protectors or ear plugs that have a sufficient
noise-dampening capacity.
When servicing the hydraulic system, use gloves to protect your skin against oil.
4
MINIMUM DISTANCES FROM LIVE ELECTRIC CONDUCTORS
Nominal
voltage
kV
<0,5
0,5 - 45
>110
Minimum distance
from an uninsulated
conductor, m
2
3
5
Minimum distance
from an insulated
conductor, m
0,5
1,5
DRIVING ON A ROAD
• On public roads, always keep equipment required by traffic laws mounted and the
lights turned on. Also keep the tractor's safety triangle in place.
• Keep the reflectors and lamps clean.
• Remember that the weight of the loader can lead to a reduction of steering control.
INSPECTIONS DURING USE
To ensure trouble-free operation, periodic inspections must be carried out. After the first
hour of use, inspect all hoses, fittings and rams for oil leaks. Perform these inspections
at regular intervals. The loader equipped with any accessory or protective guard not
presented in this booklet, is not included in the factory´s conventional delivery.
STRUCTURAL CHANGES
Do not make any structural changes in the machine without the manufacturer's consent
to avoid reducing its working capacity or safety or shortening its operational life.
5
2. OPERATING THE MACHINE
PROPERTIES OF THE MACHINE IN BRIEF
NOKKA loaders are designed for wood loading in farm forestry work. When equipped
with accessories manufactured by Nokka Oy, the loaders are suitable for loading of
ground, feed, solid dung, round bales and corresponding materials used in farming. The
loader is not designed for load lifting where co-operators are working near the load.
Use of the machine for any other purpose without the manufacturer's permission is
forbidden and entails invalidation of the guarantee.
TECHNICAL SPECIFICATIONS:
NOKKA 20L
Weight of the loader ready for work with log grab ............................. 520 kg
Net lifting torque ............................................................................17,1 kNm
Gross lifting torque ............................................................................20kNm
Swing torque ......................................................................................6 kNm
Boom turning angle ...............................................................................400o
Maximum reach................................................................................... 4,3 m
Maximum working pressure...........................................................18,8 MPa
Minimum hydraulic pump capacity ................................................. 30 l/min
NOKKA 25L
Gross lifting torque ...........................................................................25 kNm
Swing torque ...................................................................................6,5 kNm
Maximum reach................................................................................... 5,1 m
Maximum working pressure...........................................................17.0 MPa
NOKKA 31L
Swing torque ...................................................................................8,2 kNm
Maximum reach................................................................................... 6,1 m
Extension stroke.................................................................................. 1,1 m
6
NOKKA 3152
Swing torque ...................................................................................8,2 kNm
Maximum reach with extension ........................................................... 5,2 m
NOKKA 3161
Swing torque ...................................................................................8,2 kNm
Maximum reach................................................................................... 6,1 m
Extension stroke.................................................................................. 1,1 m
Maximum working pressure...........................................................17.5 MPa
NOKKA 3467
Swing torque ...................................................................................7,5 kNm
Maximum reach with extension ........................................................... 6,7 m
Extension stroke................................................................................ 1,38 m
7
MAXIMUM LIFTING TABLE
Maximum lifting capacity of models Nokka 20L, 25L, 31L, 3152, 3161 and 3467 loaders
without the rotator and the log grab. Lifting capacities are measured according to
different boom positions. Lifting capacity is approximately 100 kg lower when operating
with the rotator and the log grab.
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9
PREPEARING FOR USE
The manufacturer supplies loader models Nokka 3152, 3161and 3467 on a transport
stand to retail dealers and customers. Nokka 20L, 25L and 31L will be delivered to
customer fitted to forestry trailer and ready to use. Unpacking from the stand and
preparing the loader for work is done in the following way:
1. Lift the loader onto a support such as in picture 1. The support must be high
enough for the tractor to lower its lift arms in alignment with the draw brackets of
the loader. Be sure that the support sustains the weight of the loader.
2. Remove the wooden support blocks from the draw brackets.
3. Back the tractor carefully into the loader and set the lower arms to the same
height as the loader draw bracket holes. Back the tractor into a position where
the draw pins can be fitted. Secure them with the locking pins. If there are quickcouplings in the lower arms, fit the balls into the loader draw brackets and
reverse the tractor so that the balls are aligned with the quick-coupling heads. Lift
the lower arms enough to enable the quick-coupling head locks to engage.
Ensure that they are locked.
4. Fit the top link push rod into place.
5. Fit the valve assembly of the loader to the tractor so that the control levers move
without restriction and the valve assembly is easy to use. Fasten the valve
assembly firmly enough to avoid any movement and falling.
6. Connect the return and pressure hoses of the loader to the tractor hydraulic
outputs. As seen from the direction of hoses, the return hose will be located on
the left end and the pressure hose on the right end. The return hose is equipped
with a female connector and the pressure hose has a male connector. It is good
to connect the return hose directly into the tank, so that there will not be any
pressure buildup in the return pipe line. Follow the connection instructions of the
tractor manufacturer.
7. Make sure that the valve levers move freely in their center positions. Turn on the
hydraulic supply.
8. Lift the loader carefully with the lower arms so that they will not break the rear
window (picture 2).
9. Carefully lift the extension boom to reduce the load on the support legs (picture
2).
10. Remove the support legs from the transport package.
11. Move the booms slightly to the rear so that the grab rests on the ground.
12. Fit the support legs and hammer the accompanying attaching pins into place
(picture 3).
13. Fit the support leg rams onto the brackets in the support legs and insert the pins
(picture 3).
10
Picture 1
Picture 2
Picture 3
11
FITTING THE LOWER ARMS OF THE TRACTOR HITCH
When the loader is in the normal storage position supported by the support legs and
booms, connection occurs as follows:
1. Move the loader valve assembly to a clear area so that there is nothing to
impede the tractor when it is backed up near the loader.
2. Carefully back the tractor into a position near the loader and set the lower arms
to the same height as the holes of the loader draw brackets. Back the tractor up
so that the draw pins can be inserted and secure them with the locking pins. If
there are quickcouplers in the lower arms, fit the balls to the loader draw brackets
and move the tractor until the balls are aligned with the quick-coupling heads. Lift
the lower arms enough to enable the quick-coupling head latches to engage.
Ensure that they are locked (picture 5).
3. Fit the top link push rod into place (picture 4).
4. Lift the lower arms just enough for the support legs to leave the ground. Check
that the loader is free to move as it is lifted.
5. Fit the valve assembly of the loader near the tractor rear window so that the
control levers move without restriction and the valve assembly is easy to control.
6. Connect the return and pressure hoses of the loader to the tractor hydraulic
outputs. As seen from the direction of the hoses, the return hose will be located
in the left end and the pressure hose on the right end. The return hose is
equipped with a female connector and the pressure hose has a male connector.
It is good to connect the return hose directly into the tank, so there will not be any
pressure buildup in the return pipe line. Follow the connection instructions as
provided by the tractor manufacturer.
7. Make sure that the levers of the valve are free and in their center positions. Turn
on the hydraulic supply.
8. Carefully lift the support legs to their fully raised position. Repeat this several
times to remove any air from the rams.
9. Adjust the top link length so that the loader swivel arm is in the vertical position.
10. Check that the loader moves freely when the lower arms are lifted and lowered.
Take care not to break the rear window.
12
Picture 4
Picture 5
REMOVING THE LOADER FROM THE TRACTOR HITCH LOWER ARMS
13
1.
2.
3.
4.
5.
6.
Lower the lift arms so that the loader rests on its support legs at a convenient
height. Extend the booms straight back, lower the end of the boom onto ground
so that the loader grab lies sideways at the rear (picture 6).
Turn off the hydraulic supply before coming out from the tractor to the loader.
Uncouple the pressure and return hoses of the loader from the tractor and couple
them together (picture 7.)
Remove the loader valve assembly from the tractor and lift it to the bracket on
theloader.
Uncouple the top link and the lower arms from the loader.
Drive the tractor carefully forward.
14
Picture 6
Picture 7
15
ATTACHING THE LOADER TO THE LOADER MOUNTING FRAME OF THE NOKKA
FORESTRY TRAILER
If the loader is to be coupled to the forestry trailer loader mounting frame by its lower
links, it is performed as follows:
1. Place the forestry trailer on level ground so that the trailer beam lies low enough
to fit under the drawbar hook of the tractor.
2. Set the loader to the rear position and raise the boom high enough to allow it to
pass over the trailer front safety barrier.
3. Back the tractor up until the loader is in the centre of the mounting frame. Raise
the lower links until the loader is above the mounting frame. Ensure that loader
connection points are over the mounting frame brackets.
4. When the loader is in the correct position, lower the support legs to the ground so
that they bear the weight of the load. Connect the loader clamp to the rear of the
forestry trailer.
5. Uncouple the top link from the loader
6. Detach the tractor lower arms from the loader. Be careful when detaching the
lower arms as the loader may move.
7. Drive the tractor carefully forward as far as the hydraulic hoses will reach.
8. Guide the loader from the valve assembly so that the lower link pins can be
inserted. Be careful when using the loader because uncontrolled movements
may tip it or cause other dangerous situations.
9. Guide the loader from the valve assembly so that the top link pin can be inserted.
Tighten the trailer attachment screws and check daily on their tightness. Attach
the clamp to the rear of the forestry trailer and raise the support legs.
10. Attach the forestry trailer to the tractor drawbar hook and inspect the attachment
and hoses.
16
DISMOUNTING THE LOADER FROM THE FORESTRY TRAILER
1. Lower the loader support legs to the ground and swing the loader boom to the
side of the forestry trailer. Extend the booms straight back and lay the loader
grab to the ground so that it lies on its side with its clamps open. Set the booms
as close to the forestry trailer as possible to reduce the danger of tipping.
2. Loosen the attachment screws and detach the loader top link pin, as well as the
lower link pins.
3. Raise the loader with the support legs. Be careful when using the loader as
uncontrolled movements may cause the loader to tip or other dangerous
situations.
4. Carefully back up the tractor-trailer. Remember to close the tractor’s rear window
to prevent breaking.
5. When the tractor has been backed up a sufficient distance, detach the forestry
trailer from the drawbar hook and drive the tractor forward until the draw bracket
balls are aligned with the attachment slots. Also remember to release the shaft
control hoses.
6. Using the support legs, lower the loader so that the attachment slots are aligned
with the draw bracket ball joints. Attach the lower and top link pins.
7. Insert the cotter pins and raise the booms so that the tractor can be driven
forward. Raise the support legs from the ground and drive the tractor carefully
forward. Ensure that the hoses do not become tangled up with the forestry trailer
or other objects. Remember that the weight of the loader can affect the steering.
8. Check the attachments and hydraulic hoses again and set the loader into its
transport mode.
17
INSPECTION OF ASSEMBLY
Test loading has been done in the factory and its information is registered on the log
sheet.
Equipment:
• Check that all the pins, locking pins and other parts important for safety are secured
and that the threaded joints are tight.
Operation of the control valve:
• Check that the control valve operation matches the diagram and the control levers
return to centre position (except for the extreme 'float' position).
Operation of the safety relief valve:
• By listening carefully, check that the relief valves are working.
• A pressure test can be performed from the pressure hose quick connector. Maximum
allowed pressure settings are outlined in the specifications.
Hydraulic equipment:
• Inspect the condition of the hoses and couplings and make sure that the hoses do
not rub or twist with each other.
Labels:
Check that the machine has:
• a manufacturing label
• load label/high voltage wire label
• a control valve lever operation diagram
• a danger area label
• Lifting hook label
Stability:
• Check that the loader/forestry trailer combination is stable enough against
overturning.
• Stability must be determined by either calculating using the formula in the loader
manual or experimentally, according to standard SFS 4677.
Stability determination in practice:
• A loader is considered safe if, during the test ,no more than one support point is off
the ground.
Testing requirements:
• The vehicle is tilted 5 degrees in the direction of tipping. During the test the vehicle is
in normal operating condition without load.
Test:
• The test is performed in the most unstable direction and reach using a 10% overload.
During the test all normal movements must be performed with extreme caution.
18
WORKING INSTRUCTIONS
1.
2.
3.
4.
Keep parking brake on when using the loader.
Make sure there are no people in the working area.
Take care that you can see the whole working area without difficulty.
Start working the loader with low engine revs to keep the movements of the loader
slow. You can increase the speed as you get acquainted with the machine.
5. Avoid quick, sharp movements: your aim should be to get a smooth operation of the
loader. Start a new operation while the other operation is still going.
6. In cold weather, before you start working make sure the levers work well. Check that
the levers return to the center positions as you let them free. If the levers move stiffly,
let the oil circulate in the system to warm it up.
7. Do not use the loader for towing, or pulling sideways.
8. Be especially careful when working near electric conductors. Remember the safety
distances from electric conductors.
9. Lifting people with the loader is prohibited.
10.Get acquainted with the loader by lifting light loads first. Note! Never leave the loader
up (with or without a load), unless you are present.
11.If the combination (tractor/loader or forestry trailer/loader) starts to overturn, lower
the load down immediately. Do not drop the load from the grab. Keep hold of the
steering wheel and do not jump off the tractor!
12.Avoid loading on a slope. Do not lift full loads from the uphill side; the boom may not
stop swinging as the pressure in the ram may rise too much subsequently opening
the relief valve. This causes oil to escape from the ram which then cannot prevent
the boom from swinging . In an overloading condition, there is always risk of
overturning.
13.If the cross link of the loader, in its extreme position, rests on the back stop of the
transfer boom, the position of the boom must be changed so that the cross link
comes loose from the back stop. If a load is lifted with the loader or the grab is
pressed with the boom (e.g. against the load when the cross link rests on back stop)
the shaft of the rotator can be damaged. The guarantee does not remunerate
damages caused by incorrect use.
19
TRANSPORT POSITION
When a loader is mounted on lower arms of a tractor during transport, the loader’s
centre of gravity should be as close to the tractor as possible. For transport, the best
position is with the loader facing forward with the grab at the front of the tractor (picture
8). Note! In this position the tractor’s three point linkage must not be lowered as this
may cause the loader boom to hit the tractor roof.
If a loader is transported in the rearward position the extra weight at the rear may
adversely affect the tractor steering (picture 9).
If the forestry trailer is towed by a tractor and the loader is attached to the linkage, the
loader grab can be attached to the frame of the forestry trailer. In this case, the loader
valves must have a floating position for the lift boom, shift beam and turning
movements. This can be done by setting the levers beyond the normal work position
into the float positions. Before coupling to the floating position, the grab of the loader
has to be attached to the trailer frame, otherwise the loader boom will come down
quickly. When transporting, ensure that the grab is tightly attached to the trailer frame.
If the loader is fitted on the forestry trailer beam, the loader grab can be placed on the
trailer frame or on top of the load.
During transport, be aware of loader height, electrical cables, etc.
20
Kuva 8
Kuva 9
21
3. MAINTENANCE
SAFETY IN MAINTENANCE WORK
Before carrying out any servicing, adjustment or cleaning work or mounting any
accessories:
1. Disengage the hydraulic power output.
2. Fully lower the equipment.
3. Stop the engine.
4. WAIT until all parts have come to a standstill.
5. Before starting servicing, support all booms properly to prevent the loader from
moving even if the valve levers might be touched.
6. If the hydraulic system needs to be used in servicing or installation, take special care
in performing any hydraulic motions.
GENERAL MAINTENACE INSTRUCTIONS
• Servicing the loader carefully and at appropriate times ensures proper operation and
durability of your machine.
• In all maintenance work, maintain absolute cleanliness.
• Do not spill hydraulic oil on the ground.
• Use proper tools to avoid damage and secure correct installation.
• Keep an eye on the cylinders, hoses and couplings and repair any leaks immediately.
• If a fault occurs, try to locate it as accurately as possible. This will help you avoid
unnecessary work and further damage.
• Always use original spare parts.
LUBRICATION
Lubricate the loader after every 16 hours of operation. Apply lubricant until it slightly
runs over from the part being applied. Give two applications of lubricant to the lubricant
nipple of the gear rack slide pad.
To make lubrication of the vertical boom’s top head easier, the turning cylinders and
support legs have been scored. Before climbing atop the turning cylinder, extend the
boom directly backwards and attach it to the frame of the forestry trailer or lay it on the
ground. Lift the support legs into a horizontal position. The sliding boom is lubricated by
spreading vaseline on the boom’s sliding surfaces when they are fully exposed. Use
only high quality vaseline, example NESTE OH GREASE.
22
ADJUSTING THE SUPPORT BEARING OF THE GEAR RACK
Checking the tightness of the support bearings of the gear rack and the vertical boom's
tooth rim is essential to prevent breaking of the teeth. Check the adjustment after first
10 hours of operation and after it at intervals of about 100 hours. The recommended
clearance is 0.05 - 0.1 mm, which corresponds to a 10° - 20° turn of the tightening
screw. First loosen the lock nut and then tighten the tightening screw (torque 10 kPm).
After this open the screw about 10° - 20°. Finally screw the lock nut back and tighten it.
It is useful to check at times that the nut and screw have not turned loose by
themselves. If the loader is equipped with two gear racks, there are support bearings on
both sides of the slewing device.
POWERLESS LOADER MOTIONS
If the lifting power of the loader does not correspond to the values specified for it, check
the following points:
• Measure the tractor take-out pressure: it should be over 170 bar (3152, 3161; 175 bar)
• Measure the pressure of the hydraulic return line; max. 5 bar, preferably under 2 bar.
If the pressure exceeds the maximum, arrange a free return line in the tractor.
However, observe the tractor manufacturer's instructions in connecting the return
line.
• If the tractor take-out pressure is over 170 bar (175 bar) and the return line pressure
is under the maximum, check the loader's pressure limiting valves. Adjusting the
loader's valves must be entrusted to an authorized repair shop because the
manufacturer's guarantee will no longer be valid if the valves are adjusted improperly.
23
HYDRAULICS
Hydraulic hoses, pipes and couplings should be checked from time to time to find
possible fractures or leaks. Replace worn or broken parts with new ones to avoid
damage. The return and pressure hose type is 1/2" SAE 100 R2SC, and the pressure.
Always observe maximum cleanliness while servicing hydraulic components, and clean
the inside of hoses from dust, rubber particles, etc., before installation.
CHANGING HYDRAULIC HOSES
Proper installation prolongs the life of hydraulic hoses considerably. Observe the
following instructions while changing hydraulic hoses.
• Check the pressure indications of the hose to be installed.
• Clean the hoses from dirt, both inside and outside.
• Check that the hose follows the proper route, and after installation check that the
hose is able to move freely in all hydraulic motions.
• Check that the hose is not twisted. A twisted hose has a much shorter life than one
that is properly installed.
• After installation check that the hose couplings do not leak.
24
HOW TO ORDER SPARE PARTS
When ordering spare parts, always give the following information:
• Designation of the machine
• Serial number of the machine
• Spare part number
• Designation of the spare part
• Your name and address
• Method of delivery
Do not order only by the picture - compare the part to its designation. Order the parts in
good time from your dealer. If you have lost your spare parts catalogue, send the
broken or worn-out part as a sample.
Example.
Nokka 3467
HK 3467 XXXX (serial number)
1 pc 0170090 bearing bush 45/50-40 WB 802
Name___________________________________________
Address_________________________________________
Method of delivery_________________________________
SERIAL NUMBER
Write down the serial number of your grapple loader in the space provided below. You
will find the serial number on the label placed on the left-hand side of the vertical boom.
Serial number __________________________
STORAGE
If the forestry trailer is not in use, it's working condition and resale value can be
maintained by proper storage. Clean the machine and repaint any worn or rusty spots
carefully before putting it into storage. Lubricate all greasing points and apply a thin
layer of lubricant on places which cannot be painted or greased.
The place for storage should be a dry and cool space.
Before cleaning, disengage the hydraulic drive and stop the tractor engine. If a loader is
mounted on the forestry trailer, set the boom so that it cannot sink during storage.
DISPOSAL OF THE MACHINE
Take extra care when dismantling the machine. Make sure the dismounted machine
parts and the oil are taken to appropriate collection spots.
25
LOADING TABLE
The loading table values for the working pressure of 17,0-18,8 Mpa.
The values are not maximum lifting values, but maximum allowable loads for the loader.
26
27
DATE: 26.4.2005
WARRANTY POLICY
(Nokka Machines Division)
Nokka Oy (the manufacturer) grants its products a warranty for the period of 6 months
from the delivery date of the machine to the customer. However, the warranty is applicable in
compliance with the policy only to claims submitted to the manufacturer within 3 years of the
delivery date of the product to the representative of the factory or retailer.
The warranty applies to shown defects in manufacturing, raw material, and materials. The
warranty covers replacement of a damaged part to which the warranty applies, but does not
cover any additional damage caused by it to other than the machine itself, nor does the warranty
cover any indirect damage or loss. Such indirect damage or loss can consist of costs incurred
from interruption of work or transport, rental fees of replacement machinery, etc.
The parts covered by warranty will be delivered, at the expense of the purchaser, to the country
to which the machine was originally delivered. The warranty covers neither the costs incurred
from import, nor the internal cargo costs thereafter.
In unclear cases, the warrantor is entitled to request that the part, for which a claim has been
submitted for repair, be returned to the factory for warranty proceedings with additional
information enclosed as requested by the manufacturer. In such cases the manufacturer is liable
for the return freight.
The warranty does not cover defects caused by normal wear and tear, negligence, intent,
incorrect installation or use, overload, or defective service. The warranty is not applicable to parts
subject to wear and tear such as tyres, hoses, couplings, filters, power cables and seals. Nor
does the warranty cover damage caused to the machine by fire, traffic incident, or other accident.
A condition of the warranty is a certificate of delivery and warranty completed at the time of
delivery. Additionally, in order to avoid any further damage, a written notice must be submitted to
either the manufacturer or its representative without delay and always prior to the end of the
warranty period. A precondition for applicability of the warranty is also that the parts used in other
repairs performed on the machine are original or approved in advance by the manufacturer in
writing.
The following information must be enclosed with the warranty claim: type of machine, vehicle
identification number, delivery date, name and address of purchaser.
The warranty is not applicable if the original machine or its purpose of use has been altered, or if
any optional equipment has been attached to it without written permission from the manufacturer.
The warranty becomes void if the machine is transferred from one owner to another during the
warranty period.
NOKKA OY
www.nokka.fi
Post
P.O. Box 4
40951 MUURAME
FINLAND
Telephone and fax
Tel. +358 14 3301 500
Fax +358 14 3301 555
28
EXAMPLES OF CALCULATING FOR STABILITY DETERMINATION
In this example:
Loader:29
Tractor:Valmet 605
Find out corresponding measures and weights of you own tractor; use them in the calculations.
TRACTOR INFORMATION
Wheel base
Cl
Distance from the rear axle to the swing
centre point
b
VALMET 605
236 cm
OWN TRACTOR
cm
cm
85 cm
cm
cm
Rear axle weight
M2
2050 kg
kg
kg
Front axle weight
Distance from the rear axle centre
to the tipping edge
Distance from the loader swing centre
to the tipping edge
M1
1240 kg
kg
kg
C
80 cm
cm
cm
A
108 cm
cm
cm
LOADER INFORMATION
Maximum load
G
Weight of the booms
P
Loader weight without the boomsN
Distance from the swing centre
to the gravity point of the boomsL1
Total lenght of the booms
L
HK2043
360 kg
135 kg
380 kg
HK2551
435 kg
155 kg
415 kg
HK3052
495 kg
175 kg
450 kg
HK3061
302 kg
250 kg
450 kg
HK3453
562 kg
185 kg
450 kg
HK3467
424 kg
260 kg
450 kg
HK4155
640 kg
270 kg
470 kg
185 cm
430 cm
220 cm
510 cm
223 cm
520 cm
270 cm
610 cm
225 cm
530 cm
282 cm
670 cm
230 cm
555 cm
LOADER INFORMATION
Maximum load
G
Weight of the booms
P
Loader weight without the boomsN
Distance from the swing centre
to the gravity point of the boomsL1
Total lenght of the booms
L
HK4166
480 kg
320 kg
475 kg
HK4170
440 kg
360 kg
475 kg
HK4469
487 kg
425 kg
4450 kg
HK4475
413 kg
470 kg
445 kg
HK3654
545 kg
220 kg
460 kg
HK3668 HK4676
393 kg
265 kg
460 kg
280 cm
660 cm
290 cm
700 cm
290 cm
690 cm
325 cm
750 cm
227 cm
530 cm
284 cm
680 cm
Use the table above to select the values of your loader for the calculation
29
STABILITY DETERMINATION OF THE TRACTOR WITH THE LOADER FITTED TO
THE THREE POINT LINKAGE
WHEN LIFTED FROM THE SIDE
Stability coefficient:
N × A + M2 × C
n = --------------------------------------G×B+P×E
Required extra weight to the centre of the front axle:
n × ( G × B + P × E ) – N × A – M2 × C
--------------------------------------------------------------------------------------------M3 =
C
Where:
n
A
B
C
E
G
N
P
M2
M3
Stability coefficient n > 1,0 or n = 1,0
Right angle distance from the loader swing centre to the tipping edge
Right angle distance from the end of the boom (from the loader) to the tipping edge
Right angle to the distance from the vehicle rear axle centre to the tipping edge
Right angle distance from the loader boom centre of gravity to the tipping edge
Maximum load at the distance A+B
Loader weight without the booms
The weight of the booms
Rear axle weight without load
Required extra weight to the centre of the rear axle
Line X -X is a tipping edge, it runs through the centre of the front axle and through the centre of the rear
wheel.
Note! If the stability coefficient n becomes smaller than 1.0 in the calculation, extra weights must be used to
get enough stability. Extra weight can be determined by calculation the value for M3.
SIDE STABILITY, CALCULATION EXAMPLE
30
E = ( L1 – A )cm = ( 226 – 108 )cm
E = ( … – … )cm = ……cm
B = ( L – A )cm = ( 510 – 108 )cm = 402cm
B = ( … – … )cm = ……cm
N × A + M2 × C
n = --------------------------------------G×B+P×E
480 × 108 + 2050 × 80
n = ------------------------------------------------------- = 0, 97
505 × 402 + 170 × 118
…×…+…×…
n = ------------------------------------------- = ……
…×…+…×…
If n is less than 1.0, extra weight M3 is calculated by the followung formula:
n × ( G × B + P × E ) – N × A – M3 × C
M 3 = ---------------------------------------------------------------------------------------------C
… × (… × … + … × … ) – … × … – … × …
M 3 = ------------------------------------------------------------------------------------------------------------- = ……
…
Note! Required extra weights can be divited in equal amounts between both rear wheels.
LIFTING FROM THE REAR WITHOUT SUPPORT LEGS
31
Stability coefficient:
M 1 × C1
n = ------------------------------------------------------P×E+G×B+N×A
The required extra weight to the centre of the front axle:
n × ( P × E + G × B + N × A ) – M1 × C1
M 3 = ------------------------------------------------------------------------------------------------C1
Where:
n
A
B
C1
E
G
N
P
M1
M3
Stability coefficient n > 1,0 tai n = 1,0
Right angle distance from the loader swing centre to the centre of the rear axle
Right angle distance from the hanging point of the load to the centre of the rear axle
Wheel track
Right angle distance from the loader boom centre of the gravity to the centre of the rear axle
Maximum load at the distance of B - A
The weight of the booms
Front axle weight without load
Required extra weight to the centre of the front axle
32
REAR STABILITY, CALCULATION EXAMPLE
Without support legs
A = b = 85cm
A = b = ……cm
B = L + b = 510cm + 85cm = 595cm
B = L + b = … + … = ……cm
C1 = 236cm
C1 = ……cm
E = L1 + b = 230cm + 85cm = 315cm
E = L1 + b = … + … = ……cm
M1 × C1
1240 × 236
n = ------------------------------------------------------- = ---------------------------------------------------------------------------------- = 0, 74
P×E+G×B+N×A
170 × 315 + 505 × 595 + 480 × 85
…×…
n = ------------------------------------------------------------------- = ……
…×…+…×…+…×…
If n is less than 1.0, you must calculate the extra weight needed to the front of the tractor.
n × ( P × E + G × B + N × A ) – M1 × C1
M = ------------------------------------------------------------------------------------------------C1
1 × (… × … + … × … + … × … ) – … × …
M = ----------------------------------------------------------------------------------------------------------- kg = ……kg
…
Extra weight ............... kg to be fitted to the front of the tractor.
33
STABILITY DETERMINATION WITH TRAILER FITTED
STABILITY DETERMINATION BY CALCULATION
Stability coefficient n:
N × A + M2 × C
n = --------------------------------------G×B+P×E
Where:
n
A
B
C
E
G
N
P
M2
Stability coefficient n > 1,0 tai n = 1,0
Right angle distance from the loader swing centre to the tipping edge
Right angle distance from the end of the boom (from the load) to the tipping edge
Right angle distance from the loader booms centre of gravity to the tipping edge
Right angle distance from the loader boom centre to the centre of the rear axle
Maximum load at the distance of A-B
The weight of the booms (the centre of the gravity)
Rear axle weight without load
Line X -X is a tipping edge, it runs through the support point of the support legs and through the centre of
the wheel (with bogey wheel axle through the centre of the wheel pair).
If there is a danger of the tipping over (n<1), extra weight must used for stability:
G×B+P×E–N×A–M×C
M 3 = ---------------------------------------------------------------------------C
M3 = extra weight to the rear axle center.
34
A)
B)
A) Tractor: A trailer with one axle. The loader fitted on the trailer draw beam.
B) Tractor: A trailer with two axles (bogey). The loader fitted on the trailer draw beam.
PRACTICAL STABILITY TEST
A loader is considered stable if during the test no more than one support point comes off
the ground.
During testing the vehicle is tilted 5° in the direction of tipping. During the test the vehicle
is in normal operating condition without load.
The test perfomed in the most unstable direction using 10% overload.
During the test all normal movements must be perfomed although with extra caution.
NOKKA OY
Forest Division
PL 4, 40951 Muurame
Puhelin 044 7624 510
Telefax (014) 3100 206
Forest Division
FIN-40950 Muurame, Finland
Tel. +358 44 7624 510
Fax +358 14 3100 206

Installation-, operation

Transcription

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