DeLaval International AB DeLaval walking way cover R 16

DeLaval International AB
DeLaval walking way cover R 16
Deformability and elasticity, Continuous tread load,
Resistance to abrasion, Slip resistance
DLG Test Report 5355 F
Description
Elastic floor cover for level concrete walking ways in cattle housing.
10/04
Deformability, Elasticity,
Continuous tread load, Resistance
to abrasion, Slip resistance
Anmelder
DeLaval International AB
P.O. Box 39
SE-14721 Tumba/Schweden
Telephone: 0049 4072 742547
Telefax: 0049 4072 742847
E-Mail: [email protected]
Internet: www.delaval.com
Deutsche LandwirtschaftsGesellschaft e.V.
Prüfstelle für Landmaschinen
– Black, profiled rubber mat, 16 mm thick;
– surface with a hammer blow structure;
– under side with knobs in two sizes, height 5 mm;
– stripwise installation.
Test results and detailed evaluations
Deformability and elasticity
40
N/cm2
35
30
25
pressure
In penetration tests in a new condition with a round steel foot (artificial cow foot) having a diameter of
105 mm (contact area 75 cm2, with
a 5 mm wide ring at the periphery
of the sole which projects 1 mm
over the rest of the surface (carrying edge of the claw)) and at a penetration force of 2000 N (corresponding to ca. 200 kg), penetration depth was 4.9 mm. This results
in a calculated bearing pressure of
26.7 N/cm2.
20
In a new condition
After the continuous
pressure test
15
10
5
0
Elasticity was measured after the
cover had been exposed to a continuous tread load exerted by the
steel foot (250,000 alternating
loads of 5,000 N). After the continuous test, the penetration depth
of the steel foot decreased from
4.9 mm to 4.7 mm.
Evaluation:
Deformability and elasticity
– In a new condition
– After the continuous
pressure test
0
2
4
6
penetration depth
Figure 1:
Deformability as a function of bearing pressure
++
++
Continuous tread load
After the cover had been exposed
to a continuous tread load exerted
by a round steel foot (artificial cow
foot) having a diameter of 105 mm
(contact area 75 cm2 with a 5 mm
wide ring at the periphery of the
sole which projects 1 mm over the
rest of the surface (carrying edge
of the claw)) in test stand trials
(250,000 alternating loads of 5,000N,
corresponding to ca. 500 kg), the
floor cover showed only little wear.
Lasting deformation was not observed.
Evaluation:
– No lasting deformation
– Little surface wear
++
+
Figure 2:
Measurement of deformability with a cow foot
DLG Test Report 5355 F
2
8
mm 10
Resistance to abrasion
Slip resistance
In a standardized abrasion test, the
floor cover was rubbed with emery
cloth (grit size 280) at a pressure of
500 N (=8.13 N/cm2 area pressure).
The measurements were carried
out on the mobile footing test stand
of the DLG Test Station.
The measurements showed good
slip resistance on the dry and wet
cover.
A loaded plastic foot (10 kg) out of
polyamide (diameter 105 mm, contact area approximately 70 cm2
with a 3 mm wide ring at the
periphery of the sole which projects 1 mm over the rest of the surface) was drawn over the mat to be
tested at a speed of 20 mm/s.
The measured friction coefficients
(µ) were above the minimum value
of µ = 0.45.
After 10,000 double strokes, abrasion depth was ca. 2 mm. This corresponds to approximately 12% of
the cover height. Of the rubbed
surface (61.5 cm2), 7.4 g were
abraded.
Evaluation:
Abrasion depth and the quantity of
abraded material allow the conclusion to be drawn that the abrasion
resistance of the cover is good
+
The registered tractive forces were
correlated with the load weight,
and the friction coefficient was calculated based on these values.
Figure 3:
Test pattern after the abrasion test
DLG Test Report 5355 F
3
Evaluation:
In slip tests on a dry and a wet
cover, slip resistance was good
+
Prüfung
Der DLG FokusTest umfasste technische Messungen auf Prüfständen
der DLG-Prüfstelle.
Es wurden die Abriebfestigkeit, die
Rutschfestigkeit, die Verformbarkeit
und Elastizität untersucht und eine
Dauertrittbelastung durchgeführt.
Projektleiter
Dipl.-Ing. agr. Harald Reubold
Fachgebietsleiter
Dr. Hans Joachim Herrmann
Andere Kriterien wurden nicht
untersucht.
ENTAM – The European Network for the Testing of Agricultural Machines is the
association of European test centres. It is the goal of ENTAM to spread test results
Europe-wide to farmers, agricultural machinery dealers and manufacturers.
You will find more information about the network under www.entam.com or under
the e-mail address: [email protected]
July 2004
© DLG
Deutsche LandwirtschaftsGesellschaft e.V.
Prüfstelle für Landmaschinen
Max-Eyth-Weg 1, D-64823 Groß-Umstadt
Telefon: 06078 9635-0, Fax: 06078 9635-90
E-Mail: [email protected]
Internet: www.dlg-test.de
Deutsche LandwirtschaftsGesellschaft e.V.
Prüfstelle für Landmaschinen
Lerchensteig 42, D-14469 Potsdam
Telefon: 0331 56702-0, Fax: 0331 56702-90
E-Mail: [email protected]
Internet: www.dlg-test.de
Download of all test-reports: www.dlg-test.com
DLG Test Report 5355 F
4