JP2002337765A - Caterpillar running crawler belt - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve riding comfortableness by preventing a truck roller from dropping to the lower side by a grounding part of an elastic body track block when a truck roller is positioned right above a pin during running so that the truck roller smoothly rolls on a link in a caterpillar crawler. SOLUTION: In this caterpillar crawler, links 2 with the elastic body track block 3 are articulated and connected by pins 1. The elastic body track block 3 is fitted to each link 2 so that the elastic body track block 3 overlap the pin connection regions 15 of adjacent links 2, and a grounding part 9 of the elastic body track block 3 is applied to the lower side of the pin connecting regions 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endless track traveling track in an endless track type traveling apparatus used for construction machines and the like.

[0002]

2. Description of the Related Art Conventionally, as an endless track type traveling device used in construction machines and the like, as shown in FIG. 8, an idler 21 is provided at a front end of a track frame 20 which is fixed to a vehicle frame (not shown). A sprocket 22 serving as a starting wheel is provided at the rear end of the track frame 20, and a plurality of track rollers 23 are provided below the track frame 20 between the idler 21 and the sprocket 22. Then, an endless track traveling crawler belt having an endless shape is wound around the idler 21, the sprocket 22, and the track roller 23.

The crawler track of the crawler-type traveling device includes a plurality of endless links 2 which are articulated by pins 1 as shown in FIGS. Link 2 consisting of a pair of left and right members
Is located inside the other end of the other link 2, and a pin 1 extending left and right is provided here, so that the adjacent link 2 is articulated by the pin 1. An elastic crawler plate 3 is fixed to each of the links 2. The elastic crawler plate 3 has a left-right slender shape and an inverted trapezoidal cross section. The elastic footwear plate 3 is fixed to each link 2 by fastening the metal core 10 to the link 2 with a bolt 12.

[0004]

In such a conventional crawler track, the position of the pin 1 for articulating the adjacent link 2 is located between the elastic crawler 3 and the elastic crawler 3. Therefore, for example, as shown in FIG.
When the track roller 23 is located directly above the pin 1, the weight of the vehicle acts here via the track roller 23, and the pin 1 moves downward, and the links 2 on both sides around the pin 1 Then, the elastic body footplates 3 on both sides are bent downward, whereby the track roller 23 may fall down.

Therefore, when traveling, a plurality of track rollers 2
3 so that the pitch of the pin 1 is not equal to the distance between the pins 1 and the track roller 2 is equal to the distance between the track rollers 23.
By making the pitch 3 different so as not to be the same, all the track rollers 23 are prevented from being located immediately above the pins 1 at the same time, and the track rollers 23 are prevented from dropping all at once.

However, even with the above-described configuration, the track rollers 23 do not drop downward at the same time during traveling, but each track roller 23 moves downward just above the pin 1 every time it is located. Due to the fall, the track roller 23 could not roll smoothly on the link 2 in the crawler track. For this reason, there is a problem that running vibration is generated in the vehicle and riding comfort is deteriorated.

Accordingly, an object of the present invention is to provide a crawler track that can solve the above-mentioned problem.

[0008]

SUMMARY OF THE INVENTION A first aspect of the present invention is an endless track crawler track formed by articulating a link to which an elastic crawler plate is attached with a pin, and wherein the elastic crawler track for each link is provided. The plate is attached so that the elastic footwear plate is overlapped with the pin connection portion of the adjacent link, and the ground portion of the elastic footwear plate is applied to the lower side of the pin connection portion.

According to a second aspect of the present invention, in the first aspect, the elastic footwear plate is attached so as to be deviated so as to overlap the lower side of the pin connection portion on one of the front and rear sides, and A space is provided for the elastic footboard adjacent to the lower side to overlap.

According to a third aspect of the present invention, in the first or second aspect, an interference avoiding portion at the time of link joint movement is provided in an overlapping portion of the elastic footwear plate which overlaps a lower portion of the link pin connecting portion.

A fourth aspect of the present invention is an endless track crawler track formed by articulating a link to which an elastic crawler board is attached by a pin, and attaching the elastic crawler board to each link with an adjacent link. The elastic footwear plate overlaps the pin connection sites on both sides of the elastic body footwear and the ground contact part is located below the pin connection sites on both sides, and the elastic footwear plate on the pin connection sites on both sides with the adjacent link An elastic crawler board without a ground contact portion is alternately attached to the link below the pin connection sites on both sides without overlapping.

According to a fifth aspect of the present invention, in the fourth aspect of the invention, on both sides of the link where the elastic footwear plate is located below the pin connection site, a link between the link below the pin connection site and the elastic footwear plate is provided. Is provided with an interference avoiding unit at the time of link joint movement.

According to the first or second aspect, the elastic footwear plate is attached to the link so as to overlap the lower side of the pin connection portion on one side, and the elastic footwear plate is provided below the pin connection portion. By applying the ground part of the elastic footwear plate to the lower side of the pin connection part of all links by applying the ground part of
During traveling, even when the track roller is positioned directly above the pin, the pin and the track roller can be supported by the elastic footwear plate, thereby preventing the track roller from dropping downward. As a result, the track roller can smoothly roll on the link in the crawler track, and the traveling vibration generated in the vehicle can be reduced to improve the riding comfort.

According to the third aspect of the present invention, by providing the interference avoiding portion at the time of the link joint movement, the elastic footing plate on both sides of the pin and the link on both sides are provided by the protrusion when the vehicle goes over the protrusion on the ground. When the pin is bent upward and the pin moves upward, a protrusion on the ground can be avoided, and stability during traveling can be improved.

According to the fourth aspect of the present invention, the elastic footwear plate overlaps the pin connection portions on both sides of the adjacent link, and the ground contact portion is located below the pin connection portions on both sides; An elastic footwear plate with no grounding part located below the pin connection sites on both sides is attached to the link alternately without overlapping the elastic footwear plate with the pin connection site on both sides with the link to be connected, and the elasticity against the link By attaching the footwear board to the lower side of the front and rear pin connection parts and applying the grounding part of the elastic footwear board to the lower side of the pin connection part, the pin connection parts of all the links The ground contact portion of the elastic footwear plate is located on the lower side, that is, directly below, and during traveling, even if the track roller is located directly above the pin, the pin and the track roller can be supported by the elastic footwear plate, Track low To prevent the drop in the lower side. Also in this case, the track rollers can smoothly roll on the links in the crawler track, and the traveling vibration generated in the vehicle can be reduced, and the riding comfort can be improved.

According to the fifth aspect of the present invention, the provision of the interference avoiding portion at the time of the link joint movement allows the elastic footwear plate on both sides of the pin and the link on both sides of the pin to move over the protrusion on the ground. When the pin is bent upward and the pin moves upward, a protrusion on the ground can be avoided, and stability during traveling can be improved.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A crawler track according to a first embodiment of the present invention will be described with reference to FIGS. The crawler track is provided with a plurality of links 2 which are articulated by pins 1 and become endless in the front-rear direction. It winds around the idler 21, the sprocket 22, and the track roller 23 in the traveling device.

The link 2 is composed of a pair of left and right members, and has a structure having a flat rail portion 5 on the upper part.
A track roller or the like rolls on the rail portion 5. The link 2 has a pin hole 6 which is formed on one end of the front and rear sides and which is oriented left and right.
Is formed, and one end side of the link 2 is positioned inside the other end side of the adjacent link 2, and the right and left side pins 1 are inserted into the respective pin holes 6 and 7, so that the adjacent links 2 can be formed. Pin 1
To articulate. A vertically extending mounting hole 8 is formed in a lower portion of the link 2.

On the other hand, the elastic crawler plate 3 attached to each of the links 2 is slender in the right and left directions and has an inverted trapezoidal cross section. The elastic crawler plate 3 has a plate-shaped core 10 buried in an upper portion thereof, and the core 10 has a left and right central upper surface exposed. Then, a vertically inserted bolt insertion hole 11 is formed in the metal core 10, and a bolt 12 is inserted into the bolt insertion hole 11 from below, and a mounting hole 8 for the link 2 is formed.
The elastic body footplate 3 is attached to the link 2 by being fastened through a nut 13.

In the crawler track as described above, the elastic crawler plate 3 is attached to each link 2 by, for example, the front side (one side in the front-rear direction (the direction in which the links 2 are connected)) (FIG. 1, FIG. In FIG. 2, the elastic footwear plate 3 is attached so as to overlap the pin connecting portion 15 of the adjacent link 2 on the lower side of the pin 1. As described above, the elastic footwear board 3 is attached so as to overlap the lower side of the pin connection part 15, and the ground part 9 of the elastic footwear board 3 is applied to the lower side of the pin connection part 15.

More specifically, for the link 2 having a pin connecting portion 15 at the front and rear ends, which is the pin 1 for articulating the link 2, the elastic footwear plate 3 is connected to the front pin, which is one side. The pin connecting portion 1 on the rear side, which is the other side, is mounted so as to be deviated so as to overlap the lower side of the connecting portion 15.
5 is provided with a space below, and the front of the elastic footwear plate 3 attached to the link 2 adjacent to the rear side overlaps with this space, so that the pin connection portions 15 of all the links 2
The ground contact portion 9 of the elastic footwear plate 3 is positioned below, that is, directly below.

In the articulation of the links 2 by the pins 1, the front side, which is one side of the link 2 where the elastic crawler plate 3 attached below the pin connection portion 15 is located, and the pin connection portion 15 and a rear side, which is the other side of the link 2 on which the adjacent elastic crawler plate 3 is located with a space below, is articulated in a pair in the left-right direction.

On the other hand, in the elastic crawler plate 3, an interference avoiding portion 1 at the time of link joint movement is provided at an overlapping portion of the elastic crawler plate 3 overlapping below the pin connecting portion 15 of the link 2.
6 is provided. The interference avoiding portion 16 is provided at the center in the left-right direction above the front portion of the elastic footwear plate 3 so as to cut out a portion slightly larger than the width of the left and right links 2. By providing the interference avoiding portion 16 on the elastic footwear plate 3, when overcoming a protrusion on the ground (in a reverse rolling state), the elastic footwear plate 3 on both sides of the pin 1 and the link on both sides by the protrusion. When the pin 2 is bent upward and the pin 1 is moved upward, a protrusion on the ground can be avoided. In addition,
Of course, the interference avoiding portion 16 may cut out the entire width of the elastic footwear plate 3.

Further, the interference avoiding portion 16 is not limited to the above-described one in which the elastic crawler plate 3 is provided above the front portion. For example, as shown in FIG. May be provided with an interference avoiding portion 16, and as shown in FIG.
The interference avoiding unit 16 may be provided with a spacer 17 interposed therebetween.

As shown in FIG. 5, when the elastic footwear board 3 is in a reverse rolling state when it gets over a protrusion on the ground, the elastic footwear board 3 and the link 2 on both sides of the pin 1 are provided. Of the elastic footwear plate 3 and the adjacent link 2
(Part A shown in the figure) or the side surface of the elastic crawler plate 3 and the side surface of the adjacent elastic crawler plate 3 (part B shown in the figure). At the abutting portion of the elastic crawler plate 3, the rubber material of the elastic crawler plate 3 is abutted against the link 2 or the adjacent elastic crawler plate 3 is not exposed so that the core 10 is not exposed.
Link 2
The wear and breakage of the metal core 10 of the elastic footwear plate 3 and the like are suppressed as much as possible, and the generation of noise is also suppressed. Note that, in the elastic footwear plate 3, a rubber material which is less likely to be worn than the rubber material of the other portion may be used as the rubber material of the abutting portion.

The position of the bolt insertion hole 11 formed in the metal core 10 of the elastic crawler plate 3 in the elastic crawler plate 3 is shifted in the front-rear direction with respect to the existing elastic crawler plate 3 so that The position of attachment of the crawler plate 3 to the link 2 is changed, or the position of the attachment hole 8 formed in the link 2 is shifted in the front-rear direction with respect to that of the existing link 2 so that the elastic crawler plate 3 is attached to the link 2. By simply changing the mounting position of the elastic footwear plate 3, the elastic footwear plate 3 is attached to the link 2 so as to overlap the lower side of the pin connection portion 15 on one side, and the elastic footwear plate 3 is mounted below the pin connection portion 15. Can be applied, so that either the elastic footwear plate 3 or the link 2 can use the existing one as it is, and it is very easy and inexpensive to use these. provide Door can be.

As described above, the elastic footwear plate 3 is attached to the link 2 so as to overlap the lower side of the front pin connection portion 15 which is one side, and the elastic footwear plate is provided below the pin connection portion 15. By applying the grounding part 9 of the board 3,
The ground contact portion 9 of the elastic body footplate 3 is located below the pin connection portion 15 of all the links 2, that is, directly below the pin connection portion 15,
During traveling, even when the track roller 23 is positioned directly above the pin 1, the pin 1 and the track roller 23 can be supported by the elastic footwear plate 3, thereby preventing the track roller 23 from dropping downward. it can.

Next, a second embodiment of the crawler track according to the present invention will be described with reference to FIGS. The crawler track is provided with a plurality of links 2 which are articulated by pins 1 so as to be endless in the front-rear direction similarly to the first embodiment described above, and each link 2 is provided with an elastic crawler made of rubber or the like. 3 are attached respectively.

The link 2 is also composed of a pair of left and right members, and has a structure having a rail portion 5 on the upper part, similarly to the first embodiment. This link 2 is also provided with a pin hole 6 facing left and right at the front and rear ends, and a pin hole 7 facing left and right at the other front and rear ends. The adjacent link 2 is articulated by the pin 1 by inserting the pin 1 extending left and right and laterally into each of the pin holes 6 and 7. A vertically extending mounting hole 8 is also formed in the lower portion of the link 2.

On the other hand, similarly to the first embodiment, the elastic footwear plate 3 also has a left-right slender shape and an inverted trapezoidal cross section.
The lower surface of the elastic body 3 is buried with a plate-shaped metal core 10 at the upper part, and the metal core 10 has the left and right central upper surfaces exposed. Then, a vertically inserted bolt insertion hole 11 is formed in the metal core 10, and a bolt 12 is inserted into the bolt insertion hole 11 from below, and a mounting hole 8 for the link 2 is formed.
The elastic body footplate 3 is attached to the link 2 by being fastened through a nut 13.

The elastic footwear plate 3 has a wide front-rear width in the front-rear direction (connection direction of the link 2), and has elasticity at the pin connection portions 15 on both front and rear sides of the link 2 adjacent to the front and rear. A wide elastic footwear board 31 where the body footwear board 31 overlaps and the ground contact portion 9 is located below each of the front and rear pin connection parts 15 and a front-back width in the front-back direction (the connection direction of the link 2) is reduced. The elastic footboard 32 is not narrow and the ground contact portion 9 is not located below the pin connection parts 15 on both front and rear sides without overlapping the pin connection parts 15 on both front and rear sides with the link 2 adjacent to the front and rear. 32 and two types of elastic footwear boards 3 are prepared. Then, the wide elastic crawler plate 31 and the narrow elastic crawler plate 32 are connected to a plurality of links 2.
Alternately attached to

As described above, the wide elastic shoes 31 and the narrow elastic shoes 32 are alternately arranged on the link 2 so that the front and the rear of the wide elastic shoes 31 overlap the lower side of the pin connecting portion 15. And the ground portion 9 of the wide elastic footwear plate 31 is applied to the lower side of the pin connecting portion 15, so that the wide elastic body is provided below the pin connecting portion 15 of all the links 2, that is, directly below. The ground contact portion 9 of the crawler plate 31 comes to be located. Further, by attaching the wide elastic footwear board 31 and the narrow elastic footwear board 32 alternately to the plurality of links 2, the elastic footwear board 31 and the elastic footwear board 32 do not interfere with each other. It has such a structure.

As in the first embodiment described above, in the case of the wide elastic crawler plate 31, the front and rear sides of the link 2 where the wide elastic crawler plate 31 is located below the pin connecting portion 15 respectively. In the above, the interference avoiding portion 16 at the time of link joint movement is provided between the link 2 below the pin connecting portion 15 and the wide elastic footwear plate 31. The interference avoiding portion 16 is provided so as to cut out a portion slightly larger than the width of the left and right links 2 at the center in the left and right direction above the front part and the rear part of the wide elastic crawler board 3. The interference avoiding unit 16 can avoid the protrusion on the ground when the vehicle gets over the protrusion on the ground (when the rolling state is reversed).

As described above, in the elastic crawler board 3, the wide elastic crawler board 31 and the narrow elastic crawler board 32 are alternately attached to the plurality of links 2. The elastic footwear board 31 is attached so as to overlap below the pin connection parts 15 on both front and rear sides, and the ground part 9 of the wide elastic footwear board 31 is applied below the pin connection parts 15, Pin connection site 15 of all links 2
The ground contact portion 9 of the wide elastic crawler plate 31 is located below, that is, directly below, the track roller 23 during traveling.
Can be supported by the elastic footwear plate 31 even when the pin 1 and the track roller 23 are positioned directly above the pin 1,
The track roller 23 can be prevented from dropping downward.

[Brief description of the drawings]

FIG. 1 is a plan view of a first embodiment according to the present invention.

FIG. 2 is a side view of the first embodiment according to the present invention.

FIG. 3 is an explanatory diagram showing another example of the interference avoiding unit in the first embodiment according to the present invention.

FIG. 4 is an explanatory diagram showing another example of the interference avoiding unit in the first embodiment according to the present invention.

FIG. 5 is a state explanatory diagram in the first embodiment according to the present invention.

FIG. 6 is a plan view of a second embodiment according to the present invention.

FIG. 7 is a side view of a second embodiment according to the present invention.

FIG. 8 is a schematic view of a tracked traveling device.

FIG. 9 is a plan view of a conventional crawler track.

FIG. 10 is a side view of a conventional crawler track.

FIG. 11 is an explanatory view of a state in a conventional crawler track.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Pin, 2 ... Link, 3 ... Elastic body footplate, 5 ... Rail part, 6 ... Pin hole, 7 ... Pin hole, 8 ... Mounting hole, 9 ...
Grounding portion, 10 core, 11 bolt insertion hole, 12 bolt, 13 nut, 15 pin connection portion, 16 interference avoidance portion, 17 spacer, 20 track frame, 21
... Idler, 22 ... Sprocket, 23 ... Track roller, 31 ... Elastic footwear board, 32 ... Elastic footwear board.

Claims (5)

[Claims] An endless track running track formed by articulating a link (2) to which an elastic footboard (3) is attached with a pin (1), wherein the elastic footboard for each link (2) is provided. Attachment (3) is performed such that the elastic footwear plate (3) overlaps the pin connection part (15) of the adjacent link (2), and the elastic footwear is provided below the pin connection part (15). Crawler track according to the present invention, wherein the contact portion (9) of the plate (3) is applied. 2. An elastic footwear plate (3) is attached so as to be deviated so as to overlap a pin connection portion (15) on one of the front and rear sides, and a lower portion of the pin connection portion (15) on the other side. Crawler track according to claim 1, characterized in that there is provided a space for the elastic crawler plate (3) adjacent on the side to overlap. 3. An overlapping portion of the elastic footwear plate (3) overlapping the pin connecting portion (15) of the link (2) below,
The crawler track according to claim 1 or 2, further comprising an interference avoiding unit (16) during link joint movement. 4. A crawler track comprising a link (2) to which elastic crawler plates (31, 32) are attached and articulated by a pin (1), wherein an elastic body for each link (2) is provided. Attachment of the footwear plates (31, 32) is performed so that the elastic footwear plate (31) overlaps the pin connection portions (15) on both sides with the adjacent link (2) and is located below the pin connection portions (15) on both sides. The pin connection portions on both sides of the elastic footwear plate (31) where the ground contact portion (9) is located and the pin connection portions (15) on both sides of the adjacent link (2) without overlapping the elastic footwear plate (32). An endless track crawler track, characterized in that elastic track boards (32) in which a ground contact portion (9) is not located below (15) are alternately attached to links (2). 5. On both sides of a link (2) in which an elastic footboard (31) is located below a pin connection portion (15),
The interference avoiding part (16) at the time of link joint movement is provided between the link (2) below the pin connection part (15) and the elastic footboard (31). Crawler track.