JP2013067330A - Wear seat mounting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a wear seat mounting structure which can reduce the number of parts to be replaced and also allows a hanger bracket to be replaced as required.SOLUTION: The wear seat mounting structure includes: the hanger bracket 11 that includes a bottom part 13 disposed to an axle housing 1 to be replaceable by a first bolt 17 and an upper part 15 positioned above a leaf spring 7 via an intermediate part 14 extending upward from the bottom part 13; and a wear seat 12 disposed to the bottom part 13 to be replaceable by a second bolt 22 and positioned at a lower surface of the leaf spring 7.

Description

  The present invention relates to a wear sheet mounting structure.

  Generally, in a vehicle such as a large truck, a leaf spring is attached to a vehicle body via a trunnion bracket, and a wear seat attached to a rear axle housing is brought into contact with a side lower surface of the leaf spring to receive an axial load. There is something like that.

  Such a wear seat is installed by a wear seat mounting structure. As shown in FIGS. 6 and 7, the wear seat mounting structure includes a hanger bracket 2 fastened to the rear axle housing 1 in an exchangeable manner, and a hanger. And a wear sheet 3 fixed to the bracket 2.

  The hanger bracket 2 includes a flat bottom portion 4 that is bolted to the rear axle housing 1, a columnar intermediate portion 5 that extends upward from the bottom portion 4, and an upper portion 6 that protrudes forward from the upper position of the intermediate portion 5. I have.

  The wear sheet 3 has a predetermined thickness and is welded to the upper surface of the bottom 4 of the hanger bracket 2. A leaf spring (plate spring) 7 is slidably in contact with the upper surface of the wear sheet 3, and the upper portion 6 of the hanger bracket 2 is positioned above the leaf spring 7.

  When the wear sheet 3 is worn due to the sliding of the leaf spring 7, the wear sheet 3 is replaced with the hanger bracket 2.

  Here, in the wear seat mounting structure, as another example, there is one in which an intermediate portion of the hanger bracket is formed by extending directly from the upper surface of the rear axle housing (see, for example, Patent Documents 1 and 2).

  When the leaf spring slides and the wear seat wears as the vehicle travels, the wear seat is directly replaced from the rear axle housing.

Japanese Utility Model Publication No. 6-68905 JP-A-10-258623

  However, in the configuration in which the entire hanger bracket 2 is replaced when the wear sheet 3 is replaced, there is a problem in that resources are wasted because the portion to be replaced becomes large. Further, when the middle part of the hanger bracket is formed directly from the rear axle housing as in other examples, there is a problem that the hanger bracket cannot be replaced.

  In view of such circumstances, the present invention intends to provide a wear sheet mounting structure that reduces the number of parts to be replaced and allows the hanger bracket to be replaced as necessary.

The wear seat mounting structure of the present invention has a bottom so as to be replaceable with a first bolt with respect to the axle housing, and is positioned above the leaf spring via an intermediate portion extending upward from the bottom. Hanger bracket to arrange the upper part to be
And a wear sheet disposed on the lower surface of the leaf spring and arranged to be exchangeable with a second bolt with respect to the bottom.

  Further, the wear seat mounting structure of the present invention includes a wear seat with a pedestal disposed on the upper surface of the bottom portion, and when the wear seat is worn, the lower wear end of the wear seat is more than the upper end position of the first bolt and the second bolt. It is preferable to configure so that the position is higher.

  According to the wear seat mounting structure of the present invention, the wear seat can be replaced with the hanger bracket by the second bolt, and the hanger bracket can be replaced with the axle housing by the first bolt. The hanger bracket can be exchanged as necessary, and an excellent effect can be obtained.

It is a side conceptual diagram which shows an example of the wear seat mounting structure which implements this invention. It is a whole conceptual diagram which shows an example of the wear seat attachment structure which implements this invention. It is a top view which shows an example of the wear sheet mounting structure which implements this invention. It is a front view which shows an example of the wear sheet attachment structure which implements this invention. It is a side conceptual diagram which shows the other example of the wear seat mounting structure which implements this invention. It is a side conceptual diagram which shows the conventional wear seat mounting structure. It is a top view which shows the conventional wear sheet mounting structure.

  Hereinafter, an example of an embodiment for carrying out the wear seat mounting structure of the present invention will be described with reference to FIGS. In the figure, the same reference numerals as those in FIGS. 6 and 7 denote the same components.

  The wear seat mounting structure in the embodiment includes a hanger bracket 11 that is fastened in a replaceable manner with respect to a rear axle housing (axle housing) 1 and a wear seat 12 that is fastened in a replaceable manner to the hanger bracket 11. .

  The hanger bracket 11 includes a flat bottom portion 13 disposed on the upper surface of the rear axle housing 1, a columnar intermediate portion 14 extending upward from the bottom portion 13, and a forward projection from the upper position of the intermediate portion 14 to the wear seat 12. And an upper portion 15 located on the upper side. Further, the hanger bracket 11 is integrally provided with a pedestal portion 16 having a mounting surface having a predetermined area on the upper surface of the bottom portion 13. Here, the hanger bracket 11 includes a flat bottom portion 13a disposed on the upper surface of the rear axle housing 1, two intermediate portions 14a extending upward from both sides of the bottom portion 13a, as shown in another example of FIG. You may provide the upper part 15a which bridges the intermediate part 14a of a book and is located in the upper side of the wear sheet 12. FIG.

  The bottom portions 13 and 13a have bolt holes (not shown) at the four corners, and are fastened to the upper surface of the rear axle housing 1 by the first bolts 17, and the hanger bracket 11 is attached to the rear axle housing by removing and fastening the first bolts 17. 1 is replaceable.

  The intermediate portions 14 and 14a extend upward from the upper surface side end positions of the bottom portions 13 and 13a, and the upper portions 15 and 15a are formed to extend from the upper ends of the intermediate portions 14 and 14a. Further, another wear sheet 18 on which the leaf spring 7 can abut is disposed on the wall surfaces of the intermediate portions 14 and 14a.

  The pedestal portion 16 is located in the center of the upper surface of the bottom portions 13 and 13a so as to be adjacent to the intermediate portions 14 and 14a, and has a trapezoidal shape with a vertical cross-sectional shape.

  On the other hand, the wear sheet 12 contacts the upper surface of the pedestal portion 16 by bending from the installation portions 19 disposed on both sides of the bottom portions 13 and 13 a, the side portions 20 that curve upward from the installation portions 19, and the side portions 20. And the upper surface portion 21 that can be positioned on the bottom portion 13, 13 a so as to straddle the pedestal portion 16. The installation part 19 includes a plurality of bolt holes (not shown) on both sides, and is fastened to the upper surfaces of the bottom parts 13 and 13a by the second bolts 22, and the wear sheet 12 is removed and fastened by the second bolts 22. Thus, the hanger bracket 11 can be replaced.

  Further, the wear sheet 12 has a wear lower end L1 at the lower surface position of the upper surface portion 21 as shown in FIG. The wear lower end L1 is a height at which the upper surface portion 21 is broken when the wear sheet 12 is worn, and is positioned above the upper surface of the pedestal portion 16. Further, the wear lower end L1 is set higher than the upper end positions L2 of the first bolt 17 and the second bolt 22 at the time of bolt fastening.

  When the leaf spring 7 is arranged, the leaf spring 7 slidably contacts the upper surface portion 21 of the wear sheet 12, and the upper portions 15 and 15 a of the hanger bracket 11 are positioned above the leaf spring 7. It has become.

  The operation of the embodiment for carrying out the present invention will be described below.

  When the leaf spring 7 slides and the wear sheet 12 wears as the vehicle travels, the second bolt 22 is removed to remove the wear sheet 12 from the hanger bracket 11, and the worn wear sheet is replaced with a new wear sheet 12. Instead, the wear sheet 12 and the hanger bracket 11 are fixed by fastening the second bolt 22.

  Here, when the upper surface portion 21 of the wear sheet 12 is worn down to the lower wear end L1, the upper surface portion 21 and the side portion 20 are broken, but the wear lower end L1 of the wear sheet 12 is the first at the time of bolt fastening. It is higher than the upper end position L2 of the bolt 17 and the second bolt 22, and does not affect the bolt fastening of the hanger bracket 11 or the bolt fastening of the wear sheet 12.

  If the hanger bracket 11 is worn or damaged for some reason, the first bolt 17 is removed, the hanger bracket 11 is removed from the rear axle housing 1, and the worn or damaged hanger bracket 11 is replaced with a new hanger bracket 11. The bracket 11 and the rear axle housing 1 are fixed by fastening the first bolt 17. Here, the wear sheet 12 fixed to the hanger bracket 11 may be replaced as it is, or may be reattached to a new hanger bracket 11.

  Thus, according to the embodiment, the wear sheet 12 can be replaced with the hanger bracket 11 by the second bolt 22, and the hanger bracket 11 can be replaced with the first bolt with respect to the rear axle housing 1. 17 is exchangeable, so that the number of parts to be exchanged can be reduced and the hanger bracket 11 can be exchanged as necessary.

  In the embodiment, the pedestal portion 16 is provided on the upper surfaces of the bottom portions 13 and 13 a to provide the wear sheet 12. When the wear sheet 12 is worn, the lower wear end of the wear sheet 12 is the first bolt 17 and the second bolt 22. If it is configured to be higher than the upper end position, the bolt fastening of the hanger bracket 11 and the bolt fastening of the installation portion 19 of the wear seat 12 are not affected, so the wear seat 12 and the hanger bracket 11 are suitable. Can be replaced.

  It should be noted that the wear seat mounting structure of the present invention is not limited to the above-described embodiments, and it is needless to say that various changes can be made without departing from the gist of the present invention.

1 Rear axle housing (axle housing)
7 Leaf spring 11 Hanger bracket 12 Wear sheet 13 Bottom 13a Bottom 14 Intermediate part 14a Intermediate part 15 Upper part 15a Upper 16 Base part 17 First bolt 18 Wear sheet 22 Second bolt L1 Wear lower end L2 Upper end position

Claims (2)

A hanger bracket having a bottom so as to be replaceable with a first bolt with respect to the axle housing, and arranging an upper portion located above the leaf spring through an intermediate portion extending upward from the bottom;
A wear seat mounting structure comprising: a wear seat that is arranged to be exchangeable with a second bolt with respect to the bottom portion and located on a lower surface of the leaf spring.   A wear seat is provided with a pedestal on the top surface of the bottom, and when the wear seat is worn, the lower wear end of the wear seat is higher than the upper end positions of the first bolt and the second bolt. The wear seat mounting structure according to claim 1.

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