Kress SC-330T Slab Carrier

Kress SC-330T Slab Carrier
Kress SC-330T Slab Carrier Overview
1. Machine Envelope
•
Proposed Carrier Layout
•
Existing Carrier Layout
•
Carrier Overlay
2. Structural Improvements
•
Kress Design Process/FEA
•
Mainframe Structure
•
Tong Structures
•
Gooseneck
3. Product Updates
•
CAT 631G Engine/Powertrain
•
Operator Cab
•
Electrical System
•
Hydraulic System
•
Braking System
•
Cab Visibility Tilt Function
•
Emergency Lower
4. Maintenance/Accessibility
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Proposed Carrier Layout
Overall Carrier Size
•Length: 54’-1.7” (16502mm)
•Width: 17’-10.2” (5441mm)
•Height: 17’-10.5” (5448mm) [20’-7.2” (6278mm) at Max Lift]
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Existing Carrier Layout
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Carrier Overlay
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Kress Design/Analysis Process
Siemens NX6
•
Advanced solid modeling package that utilizes
full 3D design and assembly
NX Nastran
•
FEA solver package
Altair HyperWorks
1.
2.
Analysis software for FEA results
Provides mode and displacement analysis for
any given point on a part or structure
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Kress Design/Analysis Process
Design Process
Kress carriers are fully designed and assembled in the NX6 3D
Modeling Software for complete accuracy. All assemblies are
rigorously checked and inspected to insure proper fit, function,
and clearance prior to being released for production.
Design Analysis
All Kress rear frames and structures undergo a rigorous FEA
analysis prior to final design release. All structure analysis are
subject to 3G type loading to simulate impact and fatigue loading
over the life of the carrier.
High stress concentrations in members and joints are subject to a
design validation.
Areas that do pass the required design criteria are subject to a
redesign and will undergo further FEA analysis. Once the
structure has been validated, all components will be released for
production.
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Mainframe Structure
Additional plating and updated design to the rear
frame reduces stress concentrations and prevents
failures due to fatigue.
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Tong Structures
Redesigned ear profile provides additional
strength at the cylinder mount area
Internal support bars reinforce the
tong structure at the pivot area
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Gooseneck Structure
Gussets provide additional strength where
the casting is welded to the side plates
Thicker bottom wrapper plate and additional interior
plating reduce stress and prevent excessive flex
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Kress Dual Control Operator Cab
Features and Enhancements
•Modern look and feel
•Greatly improved visibility for the operator
•Ergonomically designed hand and foot controls
•Well positioned and highly visible instrument clusters
•Electro-hydraulic controls
•Idle sound pressure < 85 dba at the operator
•Training seat (Standard)
•Fully adjustable operator seat with air suspension, 180º
seat rotation, and seat mounted control pod
•Integrated HVAC system with well balanced airflow
front and rear
•Cab tilts rearward for ease of access to underneath
components
•Shock mounted for noise and vibration reduction
•Front steering column features telescope and tilt
adjustments
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Kress Dual Control Operator Cab
Operator and Training Seat
Operator seat
• 180 degree swivel
• Mounted below floor level
• Includes two switches to detect seat
position
Seat mounted controls
• SMC pod on right side
• Armrest only on left side
Training seat mounted in the
left rear corner of the cab
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Kress Dual Control Operator Cab
Front and Rear Instrument Clusters
Front
Rear
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Kress Dual Control Operator Cab
Front and Rear Instrument Cluster ID
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11-13
3
18
4
Front
5
1
7-10
2
16
6
15
17
19
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Front
Rear
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
20.
21.
22.
23.
24.
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Rear
15.
25-32
20-22
19
16.
17.
18.
19.
Speed / Tach Module
Quad Gauge Module
EMS Module
Fuel Gauge
Air Pressure Gauge
Hydraulic Oil Temp Gauge
Headlight Switch
Strobe Light Switch
Floodlight Switch
Fog Light Switch
EMS Mode Switch
Coolant Pump Switch
Optional Switch Location
Indicator Lights :
high beam, left/right turn, gear
hold, diff lock, retarder, [seat]
direction
Indicator Lights :
carry height, low brake oil press
Ignition Switch
Cigarette Lighter
2-Way Radio (space claim)
HVAC Control (RH sill)
Single Axis Joystick
Single Axis Joystick
Single Axis Joystick
IQAN Display
Rear Wiper / Washer
Control (not shown)
25.-32. Rocker Switches
33. Camera Monitor (space
claim)
Seat Mounted (not shown)
34.
35.
Transmission Shifter,
with Gear Hold Button
Park Brake Switch
PURPLE = Optional Items
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Kress Dual Control Operator Cab
Front Interior View
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Kress Dual Control Operator Cab
Rear Interior View
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CAT 631G Engine
The CAT C18 Electronically Controlled Unit Injection (EUI) diesel engine
powers the tractor. With dual horsepower capability, it provides high power
and torque rise for excellent lugging in tough loading conditions. The C18
is designed for long hours of continuous operation with high displacement
and low RPM ratings.
Net Power, 1900 rpm – Gears 3-8
485 hp
362 kw
Gross Power, 1900 rpm – Gears 3-8
519 hp
387 kw
Gross Power, 1900 rpm – Gears 1-2
480 hp
358 kw
Net Power, 1900 rpm – Gears 1-2
450 hp
336 kw
Bore
5.71 in
145 mm
Stroke
7.20 in
183 mm
1.106 cu. in.
18.1 liters
Displacement
The ACERT technology reduces emissions during the combustion process
by using advanced technology in air and fuel systems, in conjunction with
integrated electronics. Caterpillar meets emission regulations at the
combustion source rather than recycling exhaust gases.
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CAT 631G Engine
Features of the CAT C18 ACERT Engine:
•ADEM
The ADEM controls engine speed by adjusting the fuel duration, resulting in quicker starts in hot and cold weather, better fuel economy,
better operator response, and automatic compensation for altitude and filter plugging.
•Electronic Control Module (ECM)
The ECM utilizes advanced engine management software to monitor, control and protect the engine. The ECM maintains an active
electronic fault log that aids in troubleshooting. Input from sensors allows the ECM to monitor and control injection, timing, injection
pressure, engine cooling fan speed, ether starting aid and hydraulic pumps to adjust to any operating conditions.
•Air-to-Air Aftercooling (ATAAC)
Reduces air inlet temperature for enhanced combustion efficiency, reduced emissions levels, higher altitude capability, and more power.
•Diagnostic Capability
Electronic Technician (Cat ET) is used to display real-time pressures, temperatures, fuel settings and diagnostic messages as well as
historical information such as engine over-speeds, overheating, low oil pressure and air filter restriction events.
•Fuel Economy
Electronic controls yield a fuel savings by optimizing the timing setting for varying conditions. The ECM matches timing to the load on
the engine, engine speed and temperature.
•Maintenance
EUI engines have virtually no mechanically controlled parts to wear or adjust. These have been replaced by electronic controls, reducing
maintenance costs and increasing machine availability.
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CAT 631G Powertrain
Transmission
Electronically controlled Caterpillar planetary power shift transmission with
eight forward and one reverse speed. Gears 1 and 2 operate in converter
drive for increased torque capability. Gears 3-8 operate in direct-drive for
drivetrain efficiency during the haul. Reverse gear operates in converter
drive.
Gear selection choices are 1st, 2nd and Drive.
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CAT 631G Powertrain
Transmission
Features of the CAT Transmission:
•Electronic Control
Provides smooth, consistent shifts through the synchronization of engine and transmission speeds.
•Directional Shift Management
Reduces driveline torque and transmission clutch energy when attempting directional shifts or shifts from neutral during high engine rpm.
This helps prevent excessive transmission wear and increases drive train life.
•Control Throttle Shifting (CTS)
Automatically synchronizes engine speed to transmission speed when shifting gears. CTS reduces powertrain stress and increases
component life, as well as providing a smoother ride for the operator.
•Programmable Top Gear Selection
Allows the operator to manually set the top gear (3rd – 8th) available to match conditions or the hauling speed of the fleet to specific jobsite needs.
•Transmission Hold
Allows the operator to maintain converter drive, or hold the current gear for enhanced control.
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CAT 631G Powertrain
Planetary/Final Drive
Outboard-mounted, planetary design final drives reduce torque loads on the
other powertrain components, and provide larger contact area between gears
than countershaft transmissions for greater load carrying capacity.
Large capacity, double-row roller bearings and Caterpillar Duo-Cone seals
deliver exceptional reliability in the toughest applications.
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Electronic Control/Monitoring
Parker IQAN Control System
The IQAN control system consists of an operator interface
6.5 inch color display monitor with user interface buttons
and control modules which monitor and control the carrier
function.
•Hardware designed for mobile equipment – DC powered
•Controls all Kress hydraulic rear carrier control functions
•Diagnostic capability of all inputs and outputs
•Pop-up alarms and warnings for easier diagnostics
•View logged alarms with time/date stamp
•Monitors critical machine functions
•Features set-up and configuration screens with password
protection
•Remote diagnostic and troubleshooting capabilities via
cellular modem
•Ability to update/flash machine programs via laptop with
IQAN software
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Electronic Control/Monitoring
Rear Clamp
Pressure
Lift Pressure
Front Clamp
Pressure
If a fault occurs, a window will pop-up on the
display screen with a description of the fault and a
location of the wire. These faults will be logged in
the System Log.
Alarm Screen
Brake Pressure
Drag Link
Extend Pressure
Drag Link
Retract Pressure
Main Display Screen
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Hydraulic System
The Kress SC-330T rear carrier Lift and Clamp functions are controlled by
the new Caterpillar/Kress Electro-Hydraulic Control Valve.
The Lift and Clamp hydraulic circuits are regulated proportionally by the
electronic joystick signals from within the operator cab.
Auxiliary hydraulic functions of the carrier (Drag Link, Cushion Hitch, Cab
Tilt, Quick Function) are either mechanically or electronically actuated
rather than air piloted.
(Switches)
Electro-Hydraulic
Control Valve
Drag Link
Auto-Clamp
Auxiliary Functions
Lift/Clamp Control
(Joystick)
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Hydraulic System
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Hydraulic Braking System
The Caterpillar pneumatic actuated braking system is
replaced with a Kress custom hydraulic actuated
braking system. The internal braking components on
the Caterpillar tractor (drum, shoe, slack adjuster,
linkage) remain the same.
The Kress hydraulic braking system replaces the air
actuators with hydraulic actuators and adds a Brake
Control Manifold to control the park and service
brake functions.
The hydraulic braking system is fully integrated into
the IQAN control system and the Caterpillar
transmission ECM to monitor functionality and ease
troubleshooting.
The addition of the hydraulic braking system (along
with the full electro-hydraulic function control)
eliminates the need for air on the carrier. This
eliminates the cold weather operating issue of air lines
becoming clogged with frozen moisture condensation.
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Hydraulic Braking System
Brake Control Manifold
Hydraulic Brake Actuator
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Hydraulic Braking System
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Cab Visibility Tilt Function
A tilt function is incorporated into the cab
mount to provide additional visibility for the
operator when picking up or setting down slabs.
The mechanism utilizes a hydraulic cylinder to
tilt the cab 10° rearward. The hydraulic circuit
is dampened in order to maintain operator
comfort throughout the entire function.
The system is actuated from within the operator
cab by a rocker switch located on the rear dash.
The tilt function will remain ON until the
operator depresses the switch to the OFF
position. When the tilt function is in the OFF
position, hydraulic pressure will hold the cab in
the down position so not to cause excessive
vibration to the operator.
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Emergency Lower
In the event the carrier loses all hydraulic and
electrical controls while operating with a suspended
load, a manual “Emergency Lower” system has been
incorporated into the hydraulic circuit to safely lower
the load to the ground.
The manual controls (needle valves) are located just
outside the operator cab door on the rear LH handrail
of the cab platform.
To lower the suspended load, the operator will slowly
open the needle valve labeled “Lower” until the load
is on the ground. The operator will then open the
needle valve labeled “Unclamp” to relieve the
hydraulic pressure in the clamp cylinders.
Once the system has been fully activated, the carrier
can be towed away from the load.
Lower
Unclamp
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Maintenance/Accessibility
Operator Cab Access
The operator cab is accessed from the front LH
side of the machine.
Once on the operator cab platform, access is
available to all sides of the operator cab.
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Maintenance/Accessibility
Operator Cab Maintenance
The operator cab is mounted to a pivoting frame
to provide access to the components underneath.
The tilt mechanism is actuated by an electrically
powered hydraulic pump. The controls are
located just outside the operator cab door on the
rear LH handrail of the cab platform.
Once the cab is fully tilted, a safety link is
pinned between the pivoting frame and the cab
access platform to prevent the cab from
lowering.
Cab Tilt
Pump
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Maintenance/Accessibility
Rear Carrier Maintenance
The rear carrier features side ladders for ease of
access to rear frame components.
These access points eliminate the need for
portable ladders and/or powered hoists in
certain areas of the rear frame.
Tong table platforms provide additional access
to the tong cylinders and cables.
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