Wear pad for a crawler track of a tracked vehicle, crawler track and construction machine

Patent metadata

Field	Value
Publication number	US-11097795-B2
Application number	US-201715999533-A
Country	US
Kind code	B2
Filing date	Feb 14, 2017
Priority date	Feb 19, 2016
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

In a wear pad for a crawler track (2) of a tracked vehicle, wherein the wear pad (1) comprises an outer tread surface (14), and a bottom side (16) opposite the tread surface (14) from which at least one protrusion (30) protrudes, the wear pad (1) comprises fastening means (26) for fastening to the crawler track (2), it is specified for the following features to be achieved: that the protrusion of the wear pad (1) on the bottom side (16) features a contour which extends, at least partially, at an angle deviating from the longitudinal direction (34) of the wear pad (1).

First claim

The invention claimed is:

1. A wear pad for a crawler track of a tracked vehicle, comprising:
a body of elastomer wear pad material including:
an outer tread surface;
a bottom side opposite the tread surface;
the body of elastomer wear pad material having a length defining a longitudinal direction, and a width perpendicular to the length; and
at least one protrusion protruding from the bottom side and extending along a majority of the length of the body of elastomer wear pad material, the protrusion including a contour such that an imaginary plane parallel to the length and the width of the body of elastomer wear pad material is intersected by the contour at a line of intersection extending, at least partially, along the longitudinal direction of the wear pad at an angle deviating from the longitudinal direction of the wear pad;

at least one reinforcing element having an upper side facing toward the outer tread surface and a lower side facing away from the outer tread surface, each of the upper and lower sides having a surface area, at least a majority of the surface area of each of the upper and lower sides of the reinforcing element being enclosed within the body of elastomer wear pad material, wherein the at least one reinforcing element is at least partially integrated in the at least one protrusion of the wear pad; and
a fastener configured to fasten the wear pad to the crawler track.

2. The wear pad of claim 1 , wherein:
the fastener includes at least two fasteners arranged at a distance to one another in the longitudinal direction of the wear pad.

3. The wear pad of claim 1 , wherein:
the fastener includes at least two fasteners arranged at a distance to one another in the longitudinal direction of the wear pad; and
the at least two fasteners are integrated in the reinforcing element.

4. The wear pad of claim 1 , wherein:
the at least one reinforcing element terminates essentially flush with the wear pad material in at least two areas spaced in the longitudinal direction, and the at least one reinforcing element is otherwise embedded in the at least one protrusion.

5. The wear pad of claim 4 , wherein:
the fastener includes at least two fasteners arranged at a distance to one another in the longitudinal direction of the wear pad and attached to the reinforcing element; and
the at least two areas of the reinforcing element are arranged adjacent the at least two fasteners.

6. The wear pad of claim 1 , wherein:
a length-to-width ratio of the wear pad is in a range of from 2.5 to 5.0.

7. The wear pad of claim 6 , wherein:
the length-to-width ratio of the wear pad is in a range of from 3.5 to 4.0.

8. The wear pad of claim 1 , in combination with the crawler track, wherein:
the wear pad protrudes relative to the crawler track at least on an outer side of the crawler track as seen transverse to a direction of movement of the crawler track.

9. The wear pad of claim 1 , in combination with the crawler track, wherein:
a ratio of the width of the body of wear pad material to a return radius of the crawler track is in a range from 0.2 to 0.4.

10. The wear pad of claim 1 , in combination with the crawler track, wherein:
a ratio of the width of the body of wear pad material to a return radius of the crawler track is in a range from 0.25 to 0.3.

11. The wear pad of claim 1 , wherein:
the line of intersection extends, at least in part, non-linearly in the longitudinal direction.

12. The wear pad of claim 11 , wherein:
the line of intersection extends in a curved fashion relative to the longitudinal direction.

13. The wear pad of claim 11 , wherein:
the line of intersection extends in an undulating fashion relative to the longitudinal direction.

14. The wear pad of claim 1 , wherein:
the line of intersection extends, at least in part, linearly in the longitudinal direction.

15. The wear pad of claim 14 , wherein:
the line of intersection extends in an oblique fashion relative to the longitudinal direction.

16. The wear pad of claim 14 , wherein:
the line of intersection extends in an angular fashion relative to the longitudinal direction.

17. The wear pad of claim 1 , wherein:
the at least one protrusion has a changing width in the longitudinal direction.

18. The wear pad of claim 1 , wherein:
the at least one protrusion is of stepped design.

19. The wear pad of claim 1 , wherein:
the elastomer wear pad material comprises polyurethane.

20. The wear pad of claim 1 , wherein:
the elastomer wear pad material is colored in a bright color throughout the elastomer wear pad material.

21. The wear pad of claim 1 , wherein:
the elastomer wear pad material is colored in yellow throughout the elastomer wear pad material.

22. The wear pad of claim 1 , wherein:
the elastomer material is colored in a fluorescent color throughout the elastomer material.

23. The wear pad of claim 1 , in combination with the crawler track, and the tracked vehicle, the tracked vehicle being a milling machine including multiple crawler track links continuously revolving in a direction of movement, the crawler track links being coupled to one another in an articulated fashion, each crawler track link including at least one wear pad fastened to an outer side of the crawler track link.

Assignees

• Wirtgen Gmbh

Inventors

• Drumm Stephan
• Busley Peter
• Barimani Cyrus

Classifications

• B62D55/275 Primary

  with street plate, i.e. means to prevent tread from cutting into road surface · CPC title

• B62D55/28 Primary

  detachable · CPC title

• B62D55/32

  Assembly, disassembly, repair or servicing of endless-track systems · CPC title