JPH0966870A - Crawler belt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain lower tread pressure in a crawler belt with the same dimensions by making simple improvements on the existing crawler belt. SOLUTION: An iron plate 14 is fixed to the front wall surface 11a of each of track show 11 connected to each other by links 12 by a track shoe fitting bolt 13. The base end part 15a of an elastic plate 15 formed by reinforcing rubber or the like having weather resistance is pressed and fixed to the front wall surface 11a by the iron plate 14. The forward end part 15b of the elastic plate 15 is brought into contact with the opposite rear wall surface 11b of a track shoe 11 disposed adjacent to the above track block. The elastic plate 15 closes a clearance 16 between the respective track shoes 11 to prevent muddy water in the damp ground from entering the clearance 16. The elastic plate 15 can be fitted to the existing crawler belt, so that the treat contact area of the crawler belt 11 can be enlarged to lower the tread pressure per unit area.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a crawler (crawler) used mainly in wetlands.

[0002]

2. Description of the Related Art A crawler belt used for a construction machine vehicle or the like working on a wetland has a large gap between the crawler plates constituting the crawler belt, a large cone index of mud, and a gap between the crawler plates. Since the infiltration of mud from the ground will be great, it is desirable that the gap between the track plates is as small as possible.

Therefore, as shown in Japanese Patent Publication No. 48-17169, there is a device in which a gap cover is mounted between adjacent shoe plates.

That is, as shown in FIG. 6, in order to prevent the infiltration of mud through the gap between the shoe plates 1 and 1 that are adjacent to each other,
The gap cover 2 is fitted into the gap between the adjacent shoe plates 1, 1. The gap cover 2 is formed by bending an elastic elastic plate so as to form a groove-shaped bent portion 2a having the same shape as the shape formed between the facing side surfaces 1a of the adjacent shoe plates 1, 1. At the same time, the open edge portions 2b on both sides are fixed to the edge portions of the shoe plate 1.

[0005]

The gap between the crawler plates requires a certain distance to prevent the crawler belt warping phenomenon. Therefore, the crawler track of the above publication has a gap a required after the gap cover 2 is mounted. In order to maintain it, it is necessary to expand the gap b between the crawler plates 1 by the amount of the gap cover 2 mounted, and it is necessary to use a crawler belt different from the standard crawler belt for users who do not need this.

The present invention has been made in view of the above circumstances, and an object thereof is to obtain a lower ground contact pressure with a crawler belt having the same size by simply modifying the existing crawler belt. .

[0007]

According to a first aspect of the present invention, in a crawler belt constituted by connecting a large number of shoe plates with links, elastically the side wall surface of one of the shoe plates adjacent to each other is provided. A crawler belt having a structure in which the base end portion of the plate is fixed, and the tip end portion of this elastic plate is brought into contact with the side wall surface of the other adjacent shoe plate that faces the other, and the gap between the shoe plates is closed by this elastic plate. is there.

According to a second aspect of the present invention, in the crawler belt according to the first aspect, the iron plate is jointly fixed to the side wall surface of the crawler plate by a crawler plate mounting bolt for attaching the crawler plate to the link,
The crawler belt is configured such that the base end portion of the elastic plate is fixed to the side wall surface of the crawler plate by the iron plate.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 shows a large number of shoe plates formed in a triangular shape.
11 shows a part of an endless crawler belt in which 11 is connected by a link 12. The bolt insertion portions 14a of the iron plate 14 are fastened and fixed to the front side wall surfaces 11a of one of the adjacent track plates 11 by the track plate mounting bolts 13 for mounting the individual track plates 11 to the links 12.

The iron plate 14 is fixed by pressing the base end portion 15a of the elastic plate 15 against the front side wall surface 11a of the shoe plate 11 by the bent tip portion 14b. The tip portion 15b of the elastic plate 15 contacts the rear side wall surface 11b of the other adjacent shoe plate 11.

The elastic plate 15 is preferably reinforced rubber having weather resistance used in rubber crawler belts, for example, but its tip portion 15b is freely deformed along the facing rear side wall surface 11b, If the elastic plate 15 can close the gap 16 between the shoe plates 11, for example, a thin spring steel plate used for a leaf spring may be used.

In FIG. 1, reference numeral 17 denotes a track roller provided on the lower traveling body of the construction machine for guiding a crawler belt.

As shown in FIGS. 2 and 3, in order to attach the track plate 11 to the link 12 at the center of the front side wall surface 11a which is wider than the rear side wall surface 11b of the track plate 11. Bolt fitting grooves 21a and 21b of the track plate mounting bolt are provided at four locations.

Therefore, a bolt fitting groove near the rear side wall surface 11b
With the bolt (not shown) inserted in 21a left as it is, the two track plate mounting bolts 13b are once removed from the bolt fitting groove 21b on the edge side, and the iron plate 1 is inserted into the bolt fitting groove 21b.
4 Bolt insertion part 14a is fitted, and this bolt insertion part 14a
Insert the track plate mounting bolt 13b again through the hole to fix the track plate 11 to the link 12 and remove the front side wall surface of the track plate 11.
The iron plate 14 is fixed to 11a, and at the same time, the elastic plate is fixed by this iron plate 14.
The base end 15a of 15 is clamped and fixed.

Thus, the elastic plate 15 attached to the front side wall surface 11a of each shoe plate 11 can close the gap 16 between the shoe plates 11 as shown in FIG. In, it is possible to effectively prevent the intrusion of muddy water into the gap 16.

Further, the elastic plate 15 is composed of a track plate mounting bolt 13
It can be attached to the existing crawler belt by attaching and detaching b, and by attaching this elastic plate 15, the ground contact area of the crawler belt can be expanded and the ground contact pressure per unit area can be lowered.

In other words, the elastic plate 15 allows the width of the crawler belt or the length of the crawler track (the crawler plate) to obtain the same ground contact pressure.
The number of 11) can be reduced.

Next, in FIG. 4, the elastic plate 15 is integrated with the iron plate 14 by a presser foot 18 such as a washer and a screw 19 screwed into the iron plate 14 through the presser foot 18 and the elastic plate 15, and the iron plate 14 is integrated.
Is a modified example in which the track plate is fixed to the track plate 11 with a track plate mounting bolt 13.

FIG. 5 shows an iron plate 14 in which the elastic plate 15 having a trapezoidal cross section is integrated by the presser foot 18 and the screw 19 as described above.
Is a modified example in which is attached to the track plate 11 with the track plate mounting bolts 13.

In each of the examples, since the elastic plate 15 is attached to the existing crawler plate 11 by the iron plate 14 and the gap between the crawler plates 11 can be closed by the elastic plate 15, a substantially low ground contact pressure of the crawler belt 11 is obtained. Can be obtained.

When the elastic plate 15 is a thin spring steel plate as described above, it can be directly attached to the shoe plate 11 without the interposition of the iron plate 14. The invention described in claim 1 includes such a directly attachable elastic plate.

The elastic plate 15 may be attached by fixing the base end portion 15a of the elastic plate 15 to the rear side wall surface 11b of the shoe plate 11 and contacting the front end portion 15b with the front side wall surface 11a.

[0024]

According to the first aspect of the invention, the base end portion of the elastic plate is fixed to the side wall surface of one of the shoe plates adjacent to each other, and the tip end portion of the elastic plate is adjacently provided. Since the elastic plate closes the gap between the crawler plates by contacting the opposite side wall surfaces of the other crawler plate, the elastic plate can be easily attached to the existing crawler belt without changing the size of the gap between the crawler plates. By making a simple improvement on the existing crawler belt, it is possible to obtain a crawler belt having a substantially low ground contact pressure by expanding the crawler belt contact area even with the same crawler belt size.

According to the second aspect of the present invention, the iron plate is jointly fastened and fixed to the side wall surface of the shoe plate by the shoe plate mounting bolts for attaching the shoe plate to the link, and the base end of the elastic plate is worn by the iron plate. Since the iron plate is fixed to the side wall surface of the plate, the iron plate can be easily attached using the existing bolts, and the elastic body can be surely fixed to the side wall surface of the shoe plate by the iron plate.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a crawler belt according to the present invention.

FIG. 2 is a perspective view of a crawler plate constituting the same crawler belt.

3 is a bottom view of the shoe plate shown in FIG. 2. FIG.

FIG. 4 is a front view showing a modified example of mounting the elastic body between the upper shoe plates.

FIG. 5 is a front view showing a modified example of the elastic body shape between the upper shoe plates.

FIG. 6 is a front view showing an example of fitting a gap cover between conventional shoe plates.

[Explanation of symbols]

 11 Track plates 11a, 11b Side wall surface 12 Link 13 Track plate mounting bolt 14 Iron plate 15 Elastic plate 16 Gap

Claims (2)

[Claims] 1. A crawler belt composed of a large number of crawler plates connected by links, wherein a base end portion of an elastic plate is fixed to a side wall surface of one of the crawler plates adjacent to each other, and a tip end of the elastic plate. A crawler belt characterized in that the portions are brought into contact with opposite side wall surfaces of the other adjacent shoe plate, and the elastic plate closes the gap between the shoe plates. 2. An iron plate is jointly fastened and fixed to a side wall surface of the shoe plate by a shoe plate mounting bolt for attaching the shoe plate to a link, and the base end portion of the elastic plate is fixed to the side wall surface of the shoe plate by the iron plate. The crawler belt according to claim 1, wherein: