JP2595443Y2 - Endless track belt - Google Patents

Description

[Detailed description of the invention]

[0001] The present invention relates to the improvement of endless track shoes used for construction vehicles such as bulldozers and power shovels.
For more details, at both ends of the width and the center of the width,
Continuous phase in the length direction, protruding toward
On the shoe surface of an iron shoe plate with lugs parallel to each other,
In order to eliminate damage, the elastic body is
In addition to eliminating the torsion of the footboard due to rough terrain,
To ensure sufficient adhesion between the footwear and the elastic material,
Eliminates missing mounting parts and metal plate deformation due to intrusion
An object of the present invention is to improve the durability of a shoe, and reduce the cost of the shoe by enabling replacement of only the elastic body.

[0002]

2. Description of the Related Art A crawler track for a tracked vehicle is generally formed by connecting a bush and a pin to a shoe surface by projecting a lug or a plurality of lugs extending in a direction perpendicular to a traveling direction of the crawler track by a plurality of links. Endlessly connected irons are used. However, when traveling on a pavement road surface, the road surface is significantly damaged. Recently, an elastic body for protecting the road surface has been integrated with the shoe surface of each shoe board to travel.

[0003] That is, Japanese Utility Model Laid-Open No. 2-49684 and Japanese Utility Model Laid-Open No. 3-77794 are known as examples in which an elastic material such as rubber is adhered to the entire surface of a shoe shoe made of iron.
An elastic body 6 in which an elastic material 4 such as rubber is bonded to a metal plate 3 is made of iron.
Position the iron footboard 1 on the shoe surface side, and install the iron footboard
Bolt through hole opened in metal plate 3 sharing bolt 5a
3a and iron footboard 1 central footboard mounting bolt penetration
Link with iron footboard 1 through hole 1a
Elastic body 6 to the iron footboard 1
It is also known that it is configured to be removable (Fig. 4
(See FIG. 5). Further, as shown in FIG. 6, an elastic body 8 in which a metal pipe provided with threaded portions at both ends in the longitudinal direction is embedded.
There is also a trial production of an iron footboard 7 fixed with bolts 10 to both ends in the longitudinal direction of the iron footboard 7 by using a mounting bracket 9 having an L-shaped cross section at both ends in the length direction.

[0004]

However, in the case of the above-mentioned shoe, in which the above-mentioned elastic material such as rubber is integrated over the entire shoe surface of the iron shoe, the bolt for mounting the shoe during running is used. pebbles and sand such enters the through hole, the elastic corner portion of the bolt through hole to its starting
Lack of wood is initiated, significantly often impair the durability of the track shoe.

Further, even in the construction of FIGS. 4 and 5 in which the elastic body is made detachable from the iron footboard , the mounting bolts 5a of the iron footboard 1 are used for mounting. When the material 4 is worn, it is necessary to remove the entire iron footboard 1, which not only requires a large amount of work, but also the elastic body 6 has a shorter overall length than the iron footboard 1,
Both longitudinal ends of the 6 from where are not completely close contact with the iron crawler plate 1, earths and stone between the elastic member 6 and the iron crawler plate 1 enters during use, the elastic member 4 integrally The metal plate 3 to be held tends to be deformed.

Further, since the bolt through hole 5 is opened in the shoe surface of the elastic member 4, debris enters from there, and the bolt
It is easy to cause the elastic material 4 to drop off from the corner of the through hole 5 as a starting point.
The portion of the elastic material located immediately above a, 2c is weaker in stress in the width direction because it has a smaller thickness than the other portions, and therefore there is a problem in that wear and chipping of this portion become severe.

Further, even in the configuration shown in FIG. 6, the elastic body 8 is fixed to the iron shoe plate 7 at both ends in the longitudinal direction of the iron shoe plate 7 by the mounting bracket 9 and the bolt 10 . , weak in the longitudinal direction of the stress, the length in the case of tracked vehicle such as a power shovel is turning
The elastic body 8 mounting bolt 10 and the mounting bracket 9 at both ends in the direction tend to come off easily, which often hinders traveling.

[0008]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in the prior art, eliminates the twisting of the crawler plate due to uneven terrain running, and ensures sufficient adhesion between the iron crawler plate and the elastic material. This eliminates the loss of the elastic material due to the intrusion of debris and improves durability, and furthermore, it is possible to freely replace only the elastic body to reduce the cost,
Specifically, at both width ends and at the center of the width, while forming lugs continuous in the length direction and parallel to each other, protruding toward the shoe surface direction, and near both ends in the length direction. Positioned between an iron crawler plate having a bolt through hole at a position and lug inner surfaces at both ends in the width direction of the shoe surface of the crawler plate,
A metal plate that is superimposed according to the uneven shape of the shoe shoe surface, and protruding from the lug on the surface side of the metal plate
An elastic material attached to the entire surface in a state, and a bolt protruding from the back side of the metal plate for attaching the metal plate to the footwear plate through bolt through holes formed at both ends of the footwear plate. The head of the bolt is on the front side of the metal plate and relates to a track plate for an endless track belt buried in the elastic material.

[0009]

[Function] A metal plate is attached to both width ends and width center
Continuous in the length direction where it protrudes toward the surface
The lugs on the iron footboard with mutually parallel lugs
Located between the protruding lugs at the end and conforms to the uneven shape of the shoe surface
The metal plate is formed so as to be able to be attached and adhered.Furthermore, a hole for passing a head of a bolt for attaching an iron footboard to the link is provided in a longitudinal center portion of the metal plate, and both ends in a longitudinal direction of the metal plate. At the position near the part, a hole for passing a bolt for attaching a metal plate to an iron footwear plate is opened, and a bolt is inserted from the surface side into a bolt through hole for attaching the metal plate, and a head of the bolt Is integrally attached to the metal plate by welding so that the tip protrudes toward the back side of the metal plate. In this state, an elastic material is formed by integrally bonding an elastic material such as rubber to the surface of the metal plate by, for example, a vulcanization bonding method.

At this time, the central portion of the metal plate in the longitudinal direction is
A metal or resin cap is previously placed in the space where the head of the bolt for attaching the iron shoe plate to the link is located so that the elastic material does not enter the space.
This is positioned between lugs at both ends in the width direction of the shoe surface of the iron shoe plate, and the bolt is protruded from the bolt through hole of the iron shoe plate to the back side and integrally assembled with a nut.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The specific contents of the present invention will be described below with reference to the embodiment shown in the drawings. Reference numeral 11 denotes a metal plate, and 14 denotes an elastic member integrally attached to the metal plate 11. Metal plate 1
Reference numeral 1 denotes the unevenness of the shoe surface of the iron shoe plate 17 in which lugs are formed at both ends of the width and at the center of the width so as to protrude toward the surface of the shoe, respectively. The lugs 17b, 17 at both ends in the width direction are made to correspond to the shape.
and corrugated so as to be located between the inner surface of the c, further bolt for attaching the iron track shoe 17 to the link (not shown) in the central longitudinal portion of the metal plate 11 a head (not shown) A hole 11a for passing the metal plate 11 and a hole 11b for passing a bolt for attaching the metal plate 11 to the iron footwear plate 17 are formed at positions near both ends in the longitudinal direction of the metal plate 11, respectively.

The bolt through hole 11b of the metal plate 11 described above
Then, a bolt 12 is inserted from the front side, and the head 12a of the bolt is integrally attached to the metal plate 11 by welding 13 so that the tip protrudes toward the back side of the metal plate 11 (see FIG. 3). Further, the lugs 17b and 17c are formed on the surface side of the metal plate 11 by means such as a vulcanization bonding method .
An elastic body 16 is formed by integrally bonding an elastic material 14 such as rubber having a height that protrudes further.

At this time, in the space 15 at the center of the metal plate 11 in the longitudinal direction where the head (not shown) of the bolt for attaching the iron footwear plate 17 to the link (not shown) is located, Or put a resin cap,
An elastic material is prevented from entering the space. This elastic body
Lugs at both ends in the width direction of the shoe surface of the iron footwear plate 17 attached to each link (not shown) connected to the endless end 16
Positioned between 17b and 17c , the bolt 12 is projected from the bolt through hole 17a of the iron shoe plate 17 to the back side, and is integrally assembled to the iron shoe plate 17 by a nut (not shown).

The above-mentioned elastic material includes rubber or urethane, and is selected from materials having abrasion resistance. It is desirable to use a cap nut (not shown) from the viewpoint of preventing breakage of the bolt 12 during traveling. Thus, the elastic body 16 is made of the metal plate 1.
1 and closely adheres to the uneven shoe surface of the iron footboard 17 and
Each of them is positioned in the radial direction on the outer peripheral side of the endless crawler belt and protects the road surface by causing the vehicle to run while sequentially touching the road surface when the tracked vehicle runs.

[0015]

According to the present invention, as described above, the lugs are formed at both ends of the width and in the center of the width so as to protrude toward the surface of the shoe, and are formed in parallel to each other in the length direction. , Is located between the iron shoe plate having a bolt through hole formed at a position near both ends in the length direction and the lug inner surface at both ends in the width direction of the shoe surface of the shoe plate, and has an uneven shape of the shoe shoe surface. On the metal plate to be overlaid and on the surface side of the metal plate ,
Elastic material attached to the whole surface in a state protruding from the lug, and projecting to the back side of the metal plate to attach the metal plate to the shoe via bolt through holes formed at both ends of the shoe The elastic body is overlapped and attached to the uneven shoe surface of the iron shoe via a metal plate, so that it is overlapped with the protruding lug at the center of the width in the above shoe. Due to the presence of the uneven portion of the metal plate, the endurance of the tracked vehicle can be prevented from being twisted and the durability can be improved. Not only that, both ends of the elastic body in the width direction are supported by being overlapped between lug inner surfaces at both ends in the width direction of the iron shoe via a metal plate. The head of the bolt protruding from the metal plate is located on the back side of the metal plate and is buried in the elastic material, so that the shear stress applied to the bolt during vehicle running is extremely reduced, and the bolt is damaged. It can be eliminated, and since the metal plate is interposed between the iron footboard and the elastic body, the elastic body will not deform and the debris will not enter the iron footboard, In addition, inconveniences such as damage to the bolt attachment portion, deformation of the metal plate, and loss of the elastic body can be eliminated. In addition, since there is no bolt through hole for mounting on the shoe surface of the elastic body, earth and stones do not enter into the bolt through hole and the elastic material around the bolt through hole is not damaged.

Also, the elastic material wears out or breaks due to use over time.
Even without removing the iron footwear each time
Can be replaced, resulting in lower costs and greater workability
Can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a track plate for an endless track belt according to an embodiment of the present invention.

FIG. 2 is a front view of a crawler belt for crawler belts showing an embodiment of the present invention.

FIG. 3 is an enlarged cross-sectional view taken along line AA of FIG. 1;

FIG. 4 is a plan view showing a state in which a conventional crawler belt shoe is attached to an iron shoe.

FIG. 5 is an enlarged sectional view taken along line BB in FIG. 4 ;

FIG. 6 is an exploded perspective view showing another example of the conventional crawler belt.

[Explanation of symbols]

11 Metal plate 11a Bolt through hole 11b Bolt through hole 12 Bolt 12a Bolt head 13 Welding 14 Elastic material 15 Bolt for attaching iron footwear to link
Space where the head is located 16 Elastic body 17 Iron footboard 17a Bolt through hole 17b lug 17c lug

──────────────────────────────────────────────────続 き Continuing on the front page (72) Kazumasa Sekiguchi 5-9, Yobancho, Chiyoda-ku, Tokyo Topy Kogyo Co., Ltd. (72) Tadayoshi Rikaue 5-9, Yobancho 9 Chiyoda-ku, Tokyo In-house (56) References JP-A 2-96383 (JP, U) JP-A 50-5332 (JP, U) JP-A 51-42939 (JP, U) JP-A 59-80176 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B62D 55/24

Claims (1)

(57) [Scope of request for utility model registration] 1. At both width ends and a width center portion, mutually parallel lugs extending in the length direction, which are protruded toward the shoe surface direction, are formed, and both lugs near the both ends in the length direction are formed. Positioned between an iron crawler plate having a bolt through hole at a position and lug inner surfaces at both ends in the width direction of the shoe surface of the crawler plate,
A metal plate that is superimposed according to the uneven shape of the shoe shoe surface, and protruding from the lug on the surface side of the metal plate
An elastic material attached to the entire surface in a state, and a bolt protruding from the back side of the metal plate for attaching the metal plate to the footwear plate through bolt through holes formed at both ends of the footwear plate. And a crawler belt for crawler belts, wherein the head of the bolt is on the front side of the metal plate and is buried in the elastic material.