JP2000072054A - Crawler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive crawler which is capable of surely and easily connecting a link to a crawler plate even when the crawler plate is relatively small to be likely to be restricted in design. SOLUTION: In a crewler in which links 3, 4 connected to crawler plates 1, 2 are connected by a connection pin in an endless manner, the links 3, 4 are L-shaped to form fitting parts 3B, 4B to be added to the crawler plates, and the fitting parts 3B, 4B are connected to the crewler plates 1, 2, and the links 3, 4 can be directly, surely and easily fitted to the cores 2, etc., to form the crawler plates by the fitting parts 3B, 4B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction in which a link connected to a crawler, which is used by being attached to an endless vehicle such as a snowmobile, a construction vehicle, or an agricultural work vehicle, is connected endlessly by a connection pin. Related to crawler tracks.

[0002]

2. Description of the Related Art Hitherto, in construction vehicles and agricultural work vehicles that are frequently used on muddy terrain or snowmobiles that frequently travel on slippery inclined snow, crawler belts with low ground pressure and easy traveling, that is, endless track belts. Tracked vehicles equipped with (crawler) are often used, but for noise and rust prevention measures, crawler belts with rubber pads are increasingly used instead of metal for the grounding portion of the crawler. FIG. 4 shows a general structure in which an iron footwear plate is used for a grounding portion which has been frequently used in the related art. FIG. 4 (A) is a plan view, FIG. 4 (B) is a side view, A pair of left and right links 41 connected to a number of iron footplates 42 by bolts 43 and nuts 46, respectively.
a and 41b are connected to each other by connecting pins 45 and 44a and 44b to form an endless chain to form a crawler belt. However, in the track having such an iron track plate 42, a tracked vehicle equipped with the track may damage a road surface when the track runs on a work site,
It produced noise and caused pollution problems. For this reason, useless travel time is required by laying a protective mat on a road surface, and work efficiency is reduced.

Therefore, Japanese Patent Application Laid-Open No. 8-1042 shown in FIG.
No. 62, there is proposed a rubber shoe plate in which a core metal 22 is wrapped with rubber 21, whereby the rubber shoe plate and the links 23, 24 are connected to the bolt 29 and the nut 3.
Those connected at 0 were connected in the form of an endless chain by connecting pins 25 to form a crawler belt, thereby preventing damage to the road surface and generation of noise. In this conventional example, a number of left and right links 23 and 24 connected endlessly by connecting pins 25 are connected to a metal plate 28 by bolts 27 or by welding in advance, and the metal plate 28 is It is constructed by being connected to a core metal 22 of a shoe plate by a nut 30.

[0004]

However, in the case of such a conventional crawler in a crawler belt, in the case of a relatively small crawler, there is no space for arranging the connecting bolt 27 and the like, and the metal plate 28 is not provided. The links 23 and 24 had to be connected by welding, and the work time was increased as compared with the simple bolt mounting work. Also,
Even if connection with the connection bolt 27 or the like is possible,
Since the interposition of the metal plate 28 is indispensable, the number of parts is increased and the cost is increased.

Therefore, the present invention solves the above-mentioned problem of the conventional crawler belt, and reliably and simply connects the link and the crawler plate even with a relatively small crawler plate which is easily limited in design. It is an object of the present invention to provide an inexpensive crawler track that enables the above.

[0006]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in a crawler belt formed by connecting links connected to a crawler plate endlessly by connecting pins, the link is formed in an L shape and A crawler belt comprising: a mounting portion attached to the crawler plate; and the mounting portion connected to the crawler plate. In addition, the present invention, the footwear plate, a rubber pad constituting a grounding portion, while comprising a core metal embedded in the rubber pad,
The attachment portion of the L-shaped link is connected to the metal core by a mounting bolt screwed into a female screw portion engraved on the metal core. Further, the present invention is characterized in that the attachment portion of the L-shaped link is arranged outside the width direction of the crawler, and these are used as means for solving the problem.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment of a crawler belt of the present invention. FIG. 1 is a cross-sectional view of a crawler board, and FIG. 2 is a plan view, a front view, and a bottom view of a cored bar. As shown in FIG. 1, a crawler board, which is a unit body forming a crawler belt, includes a rubber pad 1 forming a grounding portion, and a metal core 2 embedded in the rubber pad 1. The footwear thus configured is
A pair of left and right links 3 and 4 are connected to a connecting pin 6 and a bush 5.
Crawler belts are connected by endless chains.
In the present invention, these links 3 and 4 are formed in an L shape,
Each of the upright connecting portions 3A and 4A and the mounting portions 3B and 4B attached to the core metal 2 constituting the crawler board are formed, and these mounting portions 3B and 4B are connected to the core metal 2. It is a feature.

In the present embodiment, the attachment portions 3B, 4B of the L-shaped links 3, 4 are attached to the female screw portions 9, 9 engraved on the cored bar 2 by attachment bolts 7, 7, respectively. It is characterized by being connected to the cored bar 2. The mounting bolts 7, 7 are provided with a total of four of a left and right pair slightly offset from each other. Therefore, the mounting bolts 7, 7, 7 are provided on the mounting portions 3B, 4B of the L-shaped links 3, 4, respectively. , 7, bolt holes 8, 8, 8,
8 is also drilled. FIG. 2 shows these female screw portions 9,
9 is a plan view, a front view, and a bottom view of the cored bar 2, which clearly shows a state where 9, 9, 9 are drilled. Preferably, the periphery of the perforated portion of the female screw portion 9 in the cored bar 2 is formed as a thick portion 10 to secure a predetermined length of the screw portion 9,
A decrease in strength is prevented. Optimally, the attachment portions 3B and 4B of the L-shaped links 3 and 4 are arranged outside in the width direction of the crawler. In addition, as for the footwear plate, an appropriate configuration may be adopted in addition to the configuration including the cored bar and the rubber pad. In addition, a configuration in which the attachment portions 3B and 4B of the L-shaped links 3 and 4 are arranged on the inner side in the width direction of the crawler board may be adopted in some cases.

With such a configuration, the attachment portions 3B and 4B of the links 3 and 4 formed in an L-shape are attached to the core metal 2 constituting the crawler board by a connecting tool such as an attachment bolt 7. It can be easily mounted directly without the need for an intervening member such as a metal plate in a conventional device, the number of parts is reduced and the cost is reduced.
When B and 4B are arranged on the outer side in the width direction of the crawler, the work of attaching the links 3 and 4 to the crawler can be performed freely in a relatively open space, and the links 3 and 4 can be attached to the crawler. There is no restriction on the arrangement of the mounting portion in design. In addition, the attachment portions 3B and 4B can be attached to the link connecting portions 3A and 4A closer to the widthwise end of the crawler than the conventional one, so that even if a load of the vehicle body is applied. The deflection of the rubber pad 1, especially at the end, can be minimized, the ground pressure can be made relatively uniform, and uneven wear and separation of the core 2 from the rubber pad 1 can be effectively suppressed. Then, since the attachment such as the attachment bolt 7 may be screwed from the side of the links 3 and 4, as in the conventional one shown in FIG.
Since it is not necessary to provide holes for the mounting bolts 27 for mounting the links 23 and 24 to the metal plate 28 in the rubber 21, there is no possibility that the durability of the rubber pad 1 will be affected.

FIG. 3 is a cross-sectional view of a crawler according to a second embodiment of the present invention. The L-shaped link 3,
4 is similar to that of the first embodiment in that the attachment portions 3B, 4B of the fourth member are attached to the core metal 2 constituting the crawler, but in this embodiment, the L-shaped link 3 is provided. Numerals 4 and 4 are characterized in that they are connected to the metal core 2 by connecting tools such as mounting bolts 7 fixed to the metal core 2 side. In other words, the connecting members such as the mounting bolts 7 and 7 fix the heads and the like to the bottom of the metal core 2 by welding or the like in advance, so that the screw portions of the mounting bolts 7 protrude from the surface of the metal core 2. It is buried in the rubber pad 1 in a state where it is set. A pair of left and right links 3 having bolt holes 8, 8 pierced at positions matching the mounting bolts 7 with respect to the footwear plate thus configured,
4, the mounting portions 3B and 4B are set, and the mounting portion 3
A nut 11 is screwed into the screw portion of the mounting bolt 7 from above B, 4B to connect the cored bar 2 and each of the links 3, 4.

Thus, in the present embodiment, the same effects as those of the first embodiment can be obtained, and
It is only necessary to fix the connecting tools such as the mounting bolts 7 and 7 to the bottom of the metal core 2 by welding or the like, and screw portions and the like are engraved on the mounting portions 3B and 4B of the metal core 2 and the links 3 and 4. Since there is no need, fabrication is simplified.

Although the embodiments of the present invention have been described in detail above, the shapes and materials of the members constituting the grounding portion such as rubber pads, the shapes and materials of the metal cores, Embedded form of the core metal, connection form for connecting adjacent links to form a crawler belt, link shape, connection form between the link and the crawler plate or the core metal constituting the crawler plate, mounting bolts and other connecting tools The footwear or the form of attachment to the core metal constituting the footwear can be appropriately adopted.

[0013]

As described above in detail, according to the present invention, in a crawler belt formed by connecting links connected to a crawler board endlessly by connecting pins, the links are connected to a link L.
By forming a mounting portion attached to the footwear plate by forming it into a letter shape and connecting the mounting portion to the footwear plate, it is possible to easily attach the link directly to the footwear plate, It is not necessary to interpose an intervening material such as a metal plate in the above, the parts are reduced and the cost is low, and when the mounting portion is arranged on the outer side in the width direction of the shoe, the work of attaching the link to the shoe is not necessary. It can be performed freely in a relatively open space, and the arrangement of the attachment portion of the link to the footwear plate is not restricted by design.

In addition, the attachment portion can be attached to the link connecting portion at a position closer to the end in the width direction of the footwear plate as compared with the conventional one, and even if a load of the vehicle body is applied, the rubber pad can be attached. In particular, by minimizing deflection at the end,
The ground pressure can also be made relatively uniform, and uneven wear and peeling between the core metal and the rubber pad can be effectively suppressed. And, in the case where a mounting tool such as a mounting bolt is screwed from the side of the link, only the female screw portion needs to be engraved on the core metal constituting the footwear plate. Since there is no need to provide holes for use in the rubber pad, there is no risk of affecting the durability of the rubber pad. As described above, according to the present invention, an inexpensive crawler belt that can reliably and easily connect a link and a crawler board even if the crawler board is relatively small, which is easily affected by design restrictions, is provided. You.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of a crawler belt of the present invention, and is a cross-sectional view of a crawler board.

FIG. 2 is a diagram showing a crawler belt according to a first embodiment of the present invention, and is a plan view, a front view, and a bottom view of a cored bar.

FIG. 3 is a cross-sectional view of a crawler according to a second embodiment of the present invention.

FIG. 4 is a drawing of a crawler belt composed of a conventional general iron crawler plate.

FIG. 5 is a drawing of a conventional crawler belt including a crawler board with a rubber pad attached thereto.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 rubber pad 2 core metal 3 right link 3A connecting part 3B mounting part 4 left link 4A connecting part 4B mounting part 5 bush 6 connecting pin 7 mounting bolt 8 bolt hole 9 female screw part 10 thick part 11 mounting nut

Claims (3)

[Claims] In a crawler belt formed by connecting links connected to a crawler plate endlessly by connecting pins, the link is formed in an L shape to form an attachment portion attached to the crawler plate. A crawler belt, wherein the attachment portion is connected to the crawler plate. 2. The female shoe according to claim 1, wherein the footwear plate comprises a rubber pad constituting a grounding portion, and a core bar embedded in the rubber pad, and a mounting portion for the L-shaped link is engraved on the core bar. The crawler belt according to claim 1, wherein the crawler belt is connected to the core metal by a mounting bolt that is screwed into a screw portion. 3. The mounting portion of the L-shaped link is arranged outside the width direction of the crawler board.
Tracks described in.