JPH10194171A - Elastic track shoe for endless track zone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the intrusion of rolling stones between gear of a motive wheel and a link by providing a hinge part in each core of a front and a rear side, and connecting the hinge parts of the adjacent cores with a removable hinge pin, and forming length of the hinge part for connecting adjacent cores larger than the width of a left and a right operating surface parts. SOLUTION: Multiple elastic track shoes are arranged in the longitudinal direction of a crawler, and adjacent cores 10, 10 are connected to each other by inserting a removable hinge pin 11 into hinge parts 10a-10d. With this structure, a clearance between the adjacent elastic track shoes is formed small, and intrusion of rolling stones between gear of a motive wheel and the core 10 and the operating surface part 10A can be prevented. Furthermore, in the hinge parts 10a-10d of the core 10, an opening part A is provided between an engagement part 10B, which is larger than the fitting width of the left and the right operating surface parts 10A, 10A and which is integrally formed with the left and the right operating surface parts 10A. 10A, and the hinge part 10c. Since the soil is discharged from this opening part A, stay of the soil in the periphery of the cores 10, 10 and the operation surface parts 10A, 10A can be prevented, and applying of a heavy load to the elastic track shoes can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic crawler track in an endless track belt used for a tracked vehicle of construction equipment such as a hydraulic excavator or a bulldozer, and more particularly, to a hinge of a core of the elastic crawler board. And an endless track belt in which adjacent elastic footwear plates are connected to each other by pins detachable at hinge portions by coating and bonding an elastic body.

[0002]

2. Description of the Related Art Rubber crawler belts used for construction machines such as hydraulic excavators and bulldozers are formed by embedding a large number of core wires and a core body in endless rubber. When this occurs, it is difficult to repair the rubber crawler belt, and it is necessary to replace the rubber crawler belt with a new one, which raises a problem that user cost increases. In order to solve such a problem, recently, a plurality of elastic crawler boards having an elastic body bonded to a single core body arranged in the longitudinal direction of the crawler to form an endless track belt have been developed.

[0003] As a prior art of elastic footwear, Japanese Unexamined Patent Publication No.
No. 53078 has been filed. According to the publication, there is described a technique in which a cast-integrated shoe and a link are used, and an elastomer portion is bonded only to the grounding surface side of the shoe.

Japanese Patent Application Laid-Open No. Hei 5-286644 has been filed as a prior art of elastic footwear. According to the publication, as shown in FIG. 34 and FIG.
And the links 45, 45 are integrally fixed. Adjacent links 45, 45 end portions are overlapped and connected by a pin 46. A technique for bonding an elastic body 47 to the shoe plate 42 is described.

Further, Japanese Patent Application Laid-Open No. Hei 7-156842 has been filed as a prior art of elastic footwear. This application will be described with reference to FIGS. The link 50 and the shoe plate 50a are integrally formed, and a rubber pad 52 is flow-bonded to the outer surface side (ground contact side) of the shoe plate 50a. The constituent technologies are described.

Japanese Patent Application Laid-Open No. Hei 5-278645 has been filed as a prior art of elastic footwear. This application will be described with reference to FIGS. FIG. 38 is a perspective view of the elastic crawler plate viewed from the tread surface side, and shows the crawler belt width of the iron crawler plate 53 having the grocer 54 attached to the tread surface side of the not-shown annularly connected track link. A technique of vulcanizing and bonding the rubber pad 55 so as to cover only the central part in the direction is described.

[0007]

However, in Japanese Patent Application Laid-Open No. 8-53078, the elastomer portion is bonded only to the contact surface side of the shoe, and the elastomer portion is easily cracked or peeled off by contact with earth and sand. In the configuration in which adjacent links are connected with pins, there is a link height, so that the gap between the adjacent links is large, and rocks and the like invade between the starting wheel and the link, causing uneven wear of the teeth of the starting wheel and the like. Occur. In addition, as shown in FIGS.
No. 156842 also has a link height in a configuration in which adjacent links 50, 50 are connected by a pin.
The gap LB when the adjacent rubber pads 52, 52 are flat, and the rubber pad 5
The gap LB1 between 2, 52 is large. For this reason, rocks and the like invade between the starting wheel and the link, causing uneven wear of the teeth of the starting wheel and the like. Further, as shown in FIGS.
In the configuration of No. 156842, the distance between the link and the outer end of the shoe plate is long in the configuration in which the adjacent links 50 are connected by the pins 51, and an eccentric load is applied when riding on a boulder or the like, and the shoe plate Is easily twisted.
For this reason, deformation of the shoe plate, peeling of the rubber pad,
Cracks are likely to occur. Furthermore, since the links are connected to each other, it is necessary to increase the strength of the link to increase the weight in order to withstand the tensile force, and there is a problem that the weight increases.

Further, Japanese Patent Laid-Open No.
No. 28,646, the elastic footwear plate has adjacent links 45, 4
The width LA at which the end portions 5 overlap is small, and the surface pressure of the pin 46 is large. For this reason, there is a problem that the pins 46 wear out early.

Further, in Japanese Patent Laid-Open No. Hei 5-278645, as shown in FIG. 39, stress concentration occurs at a portion (hatched portion) of the rubber pad 55 immediately below the grouser 54, and breakage occurs early from this portion. . Further, as shown in FIG.
When it is worn down to the height, it does not function as a rubber footboard, so it is used as an iron footboard. However,
In this state, the closer 54 does not pierce the ground, and no traction force is generated. For this reason, it is necessary to remove the remaining rubber, but the removal operation is extremely difficult due to the presence of the grouser 54, and a great deal of cost and time are required for removal.

[0010] In a conventional construction machine equipped with an elastic crawler board, a large number of elastic crawler boards are arranged in the longitudinal direction of the crawler, and the ends of adjacent links are overlapped and connected by pins. To form an endless track. Regular pins are used as the pins for connecting and connecting the ends of the many adjacent links so that they do not easily come off. For example, the interference between the diameter of the regular pin and the hole diameter of the link is set to about 50 μm or less. A track band in which many links are connected by regular pins is connected by a few (1 to 3) master pins. For example, the interference between the diameter of the master pin and the hole diameter of the link is reduced, and the master pin can be removed by using a tool. The reason for using this regular pin is that the iron crawler belt is subjected to an eccentric load when traveling on rocky uneven road surface, which is a severe working condition, and the pin or link hole comes off due to wear etc. This is because the connection with the link is not disconnected. This concept of iron crawler was also used in conventional rubber cuffs.
However, many construction machines equipped with elastic footwear are used in urban civil engineering work sites, and do not travel on roads with uneven rocks, etc., and travel on asphalt roads or flat roads Frequent. Thus, it is not necessary to use a regular pin which can only be blown, for example, because it is difficult to attach and detach the link when replacing the link.

Further, the conventional elastic footwear plate has a problem in that the pin structure for connecting adjacent links has a pin length corresponding to the width of the link, so that the surface pressure is high and wear occurs early. Furthermore, since the elastic footwear is made up of a core, a link, and an elastic body, the height from the link lower surface to the upper surface of the elastic body is higher than the conventional iron footwear, so It is necessary to increase the clearance with the body. For this reason, the stability of the vehicle body deteriorates. In addition, when the height of the elastic footwear plate is increased, the overall height of the vehicle is increased, and transportability is deteriorated in a place where the vehicle height is restricted.

The present invention focuses on the above-mentioned problems of the prior art, and connects adjacent elastic footwear plates with hinges, thereby reducing the gap between adjacent elastic footwear plates and starting the boulders and the like. In order to prevent uneven wear of the teeth of the starting wheel by preventing intrusion between the teeth of the ring and the link, and to prevent torsion of the elastic body footboard so that the elastic body does not peel or crack. I do. In addition, the wear life of the elastic body is long, and even after the elastic body is worn, it can function as it is as an iron track board, and it is lightweight, and the elastic track board of the endless track belt which improves durability and transportability is used. The purpose is to provide.

[0013]

In order to achieve the above object, a first invention of an endless track elastic footboard according to the present invention comprises a core 10 and an integral part of the core 10. The elastic crawler plate 1 is formed of left and right tread portions 10A, 10A which are formed and abut on the tread surfaces of the rolling wheels 3, 5, 6 and an elastic member 12 which covers and adheres to the core body 10. The starting wheel 4 and the rolling wheels 3, 5,
6, which has hinge portions 10a and 10b of the front core 10 and hinges 10c and 10d of the rear core 10, Hinge portions 10a, 10b, 10c, 1 of adjacent cores 10, 10
Hinge parts 10 which connect the 0d members by a detachable hinge pin 11 and connect the adjacent core bodies 10
The length L1 of a, 10b, 10c, 10d is larger than the width of the left tread 10A and the right tread 10A. According to the above configuration, a number of elastic footwear plates 1 are arranged in the longitudinal direction of the crawler, and adjacent core bodies 10, 10 are connected to the hinge portions 10a, 10b, 10c, 10d by inserting the detachable hinge pins 11 therewith. As a result, the gap between the adjacent elastic footwear plates 1 is reduced so that the boulders and the like do not enter between the teeth of the starting wheel 4 and the core body 10 and the tread portion 10A. Further, the core members 10, 10 of the adjacent elastic crawler plate 1 are connected to hinge portions 10a,
Since the connection is made at 10b, 10c, and 10d, the twist is small even when a boulder or the like is run on. Further, hinge portions 10a, 10b, 10c, 10
Since the detachable pin 11 inserted in d can be easily removed with a tool, the replacement operation of the elastic footwear board 1 can be easily performed. Further, conventionally, a bush is externally fitted to a pin portion connecting the links and the teeth of the starting wheel are meshed with the bush, so that there is a problem that the number of parts is large. In contrast, the left and right tread portions 10A, 10A
Since the teeth of the starting wheel 4 are engaged with the engaging portion 10B formed integrally with A, the parts are simplified. This makes it possible to reduce the weight of the elastic footwear plate, thereby improving the driving efficiency and reducing the cost. Furthermore, the adjacent cores 10, 10 are connected to the hinge portions 10a, 10a.
b, 10c, 10d, and the left and right tread portions 10
A and 10A are used only for rolling the rolling wheels 3, 5, and 6. As a result, the tread portions 10A, 10A can be reduced in size, so that the weight of the elastic footwear plate can be reduced, driving efficiency can be improved, and costs can be reduced. In addition, the adjacent cores 10, 10 are hinged to each other.
Since the connection is made by a, 10b, 10c, and 10d, the hinge portions 10a, 10b, 10c, and 10d serve as strength members. As a result, the thickness t1 of the cores 10, 10 can be reduced, so that the weight can be reduced.
Since the total height H1 of the elastic footwear plate 1 can be reduced,
Clearance L between vehicle body 7 and elastic footwear board 1 shown in FIG.
2 can be reduced. Thereby, the stability of the vehicle body can be improved, and the overall height of the vehicle can be reduced, so that the transportability is improved. Further, in a conventional pin structure for connecting links, FIG.
As shown in FIG. 5, the width LA where the ends of the adjacent links overlap is small, and the surface pressure of the pin is high. For this reason, there has been a problem that the pins are worn out early. On the other hand, in the present invention, the adjacent cores 10, 10 are connected by the hinge portions 10a, 10b, 10c, 10d having the predetermined length L1, so that the surface pressure of the hinge pin 11 can be reduced. Thus, there is no problem that the hinge pin 11 is worn out early. Further, since the grounding surface side of the core body 10 is flat, the elastic body 12
Does not occur, and the elastic body 12 is not cracked or damaged. Then, the cores 10 and 10 and the treads 10
A, 10A does not bite the boulders and the like, and prevents uneven wear, breakage, etc., and has a small twist, so that deformation of the core and treads, cracking, and separation and cracking of the elastic body can be suppressed. Therefore, the durability is improved.

According to a second aspect of the present invention, in the configuration of the first aspect, an engaging portion 10B formed integrally with the left and right tread portions 10A, 10A of the core body and meshing with the teeth of the starting wheel 4, or the adjacent portion. Hinge part 30 for connecting core members 30
The structure is such that the teeth of the starting wheel 4 mesh with c. According to the above configuration, conventionally, a bush was externally fitted to the pin portion connecting the links, and the configuration was such that the teeth of the starting wheel meshed with the bush, so that there was a problem that the number of parts was large. . On the other hand, according to the present invention, since the teeth of the starting wheel 4 are meshed with the engagement portion 10B or the hinge portion 30c, the parts are simplified. Therefore, the weight of the elastic footwear plate can be reduced, the driving efficiency can be improved, and the cost can be reduced.

According to a third aspect of the present invention, in the structure of the first aspect, a hinge for connecting the adjacent cores 10, 10 with an engaging portion 10B formed integrally with the left and right tread portions 10A, 10A of the core. An opening A is formed between the opening 10 and the portion 10c. According to the above configuration, since the earth and sand is discharged from the opening A, the earth and sand do not accumulate around the cores 10 and 10 and the treads 10A and 10 and the elastic footwear plate 1 becomes heavy due to the accumulation of the earth and sand. There is no. As a result, the driving efficiency of the elastic footwear plate 1 is improved.

According to a fourth aspect of the present invention, in the structure of the first aspect, the left and right tread portions 10A, 10A of the core body are provided with rolling wheels 3, 5,
In this configuration, the rolling contact is made with the tread of No. 6. According to the above configuration, the adjacent cores 10, 10 described in the configuration of the first invention are connected to the hinge portions 10a, 10b, 10
They are connected by c and 10d. Left and right treads 10A, 10
A is used only for rolling the rolling wheels 3, 5, and 6. This eliminates the need for a conventional large link for connecting adjacent cores, and allows the tread portions 10A, 10A to be small. Therefore, it becomes possible to reduce the weight of the elastic footboard, and the driving efficiency is improved,
The cost is also reduced.

According to a fifth aspect of the present invention, in the configuration of the first aspect, a projection 13a, 13b, 13c, 13d having a predetermined height is provided on the grounding surface side of the hinge portion 10a, 10b, 10c, 10d.
Is provided. According to the above configuration, when the elastic body 12 is worn, the projections 13a, 1
Since 3b, 13c, and 13d pierce the ground and generate traction, they can exhibit the function as an iron shoe board. Further, at the time of reverse slewing, the elastic body 12 and the projections 13a,
13b, 13c, and 13d are contacted, and the reverse sled angle can be limited to a small value. Therefore, the rocking motion can be reduced and the riding comfort can be improved.

[0018]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an endless track elastic track plate according to the present invention; FIG.
Rolling wheels such as an idle wheel 3, an upper wheel 5 and a lower wheel 6 are rotatably mounted on a track frame 2 of the construction machine shown in FIG. Further, a starting wheel 4 for transmitting a driving force from a driving device (not shown) is provided. The rolling wheels such as the idler wheel 3, the upper rolling wheel 5 and the lower rolling wheel 6 and the starting wheel 4 are wound around a number of elastic footwear plates 1 to form an endless track belt. A vehicle body 7 is disposed above the elastic footwear plate 1. Less than,
First to sixth embodiments of the endless track elastic footwear according to the present invention will be described in detail.

First, a first embodiment of an endless track elastic footboard according to the present invention will be described with reference to FIGS. FIG. 1 is a diagram of the elastic footwear plate viewed from the ground contact surface side, and FIG. 2 is a diagram of the elastic footwear plate viewed from the non-ground contact surface side. FIG. 3 is a view of one elastic crawler plate viewed from the non-ground surface side. As shown in FIG. 1 and FIG. 2, the core body 10 has four hinge portions 10a, 10b,
10c, 10d, engagement portion 10B, and tread portion 10A,
10A are integrally formed. The core 10 is manufactured by casting or forging, or the core 10 and the hinge 10
a, 10b, 10c, 10d, the engaging portion 10B, and the tread portions 10A, 10A may be manufactured as a single item and fixed integrally by welding. As shown in FIG. 1, an elastic body 12 is coated and adhered to the core body 10 and the engaging portion 10B. The elastic body 12 covering the core body 10 is
It is formed in a trapezoidal shape whose cross-sectional area is gradually reduced toward the left and right end portions of the zero.

The core body 10 shown in FIGS. 2 to 6 has left and right tread portions which contact the tread surfaces of rolling wheels such as the idler wheel 3, the upper rolling wheel 5 and the lower rolling wheel 6 shown in FIG. 10A, 10A
Are integrally formed. The left and right tread portions 10A,
10A is integrally formed with an engaging portion 10B with which the teeth of the starting wheel 4 mesh. The core body 10 is covered and adhered by an elastic body 12 extending from the ground plane shown in FIG. 1 to the non-ground plane shown in FIG. Here, the elastic body 12 is attached to the core body 10.
And the tread portions 10A and 10A that abut on the tread surfaces of the rolling wheels such as the idler wheel 3, the upper rolling wheel 5 and the lower rolling wheel 6, and the engaging portion 10B that meshes with the teeth of the starting wheel 4 are integrally formed. This is referred to as an elastic footwear board 1. Left core body 10 shown in FIG.
An opening A is formed between the engaging portion 10B of the core member 10 and the hinge portion 10c of the adjacent core body 10. The earth and sand are discharged from the opening A, and the structure is such that earth and sand do not adhere around the engaging portion 10B which meshes with the teeth of the starting wheel 4.

As shown in FIGS. 2 and 3, the core body 10 is integrally formed with a hinge portion 10a on the rear right side, a hinge portion 10b on the left side, a hinge portion 10c on the front right side, and a hinge portion 10d on the left side. I have. Hinge portions 10a, 10 of this core body 10
b, 10c and 10d are larger than the attachment width of the left tread portion 10A and the right tread portion 10A, and are set to a predetermined length L1 in the width direction of the core body 10 to connect adjacent core bodies 10 together. It has become. Positioning the hinges 10a and 10b of the left core 10 shown in FIG. 2 and the hinges 10c and 10d of the adjacent core 10,
The hinge pins 11 are inserted into and engaged with the hinge portions 10a, 10b, 10c, 10d. The hinge pin 11 corresponds to a master pin used for a conventional iron crawler belt, and is detachable with a tool. B- in FIG.
The B sectional view will be described with reference to FIG. The core body 10 shown by oblique lines has left and right tread portions 10A, 10A and an engaging portion 10B integrally formed. The elastic body 12 covers and adheres the core body 10.

As described above, the core body 10 of the elastic footwear board 1 is shown in FIG.
As shown in FIG. 8, a large number of Q portions 1 are continuously provided in the longitudinal direction of the crawler to form an endless track zone. Next, in FIG.
The part will be described with reference to FIG. The teeth of the starting wheel 4 are engaged with the engaging portions 10B of the core body 10. A driving force from a driving device (not shown) is transmitted to the starting wheel 4 so as to rotate the elastic footwear plate 1. As shown in the figure, the teeth of the starting wheel 4 mesh with the engaging portions 10B of the core body 10 every one tooth. As described above, the teeth of the starting wheel 4 are meshed with the engaging portions 10B of the core body 10 every one tooth, so that the teeth are compatible with conventional iron crawlers of hydraulic excavators and bulldozers and can be replaced. . Also, the hinge 10
a and 10d, the gap L3 when the adjacent elastic bodies 12 and 12 are engaged with the starting wheel 4 is different from the gap L2 when the elastic bodies 12 and 12 are flat.
Rubber pads 52, 52 when meshing with the starting wheel shown in FIG.
Can be smaller than the gap LB1. This allows
Infiltration of boulders and the like can be prevented.

The operation of FIGS. 1 to 8 will be described. A number of elastic footwear boards 1 are arranged in the longitudinal direction of the crawler, and adjacent core bodies 10, 10 are connected to hinge portions 10a, 10b, 10c,
Since the detachable hinge pin 11 is inserted and connected to 10 d, the gap between the adjacent elastic footwear plates 1 is small, and the boulders and the like are formed by the teeth of the starting wheel 4, the core 10, and the tread 10.
Do not enter between A. In addition, the conventional Japanese Patent Laid-Open No. 7-156
No. 842, in which adjacent shoe plates (cores) are connected by links, the distance from the link to the outer end of the shoe plate is long, and an eccentric load is applied when riding on a boulder or the like. Thus, the elasticity of the elastic body is likely to be peeled or cracked due to the large torsion of the shoe plate. However, according to the first embodiment of the present invention, the core bodies 10, 10 of the adjacent elastic body footplate 1 are fixed to a predetermined length. Hinge part 10 of L1
Since the connection is made by a, 10b, 10c, and 10d, the torsion is small even when a boulder or the like is run on. Further, an engaging portion 10B integrally formed with the left and right tread portions 10A, 10A.
An opening A is provided between the hinge portion 10c and the hinge portion 10c.
Since the earth and sand is discharged from the opening A, the cores 10, 1
0, earth and sand do not accumulate around the treads 10A, 10A,
The elastic footwear plate 1 does not become heavy due to the accumulation of earth and sand.
As a result, the driving efficiency of the elastic footwear plate 1 is improved. Furthermore, hinge portions 10a, 10
Detachable pins 11 inserted in b, 10c, 10d
Can be easily removed by a tool, so that the work of replacing the elastic footwear plate 1 can be easily performed. Further, conventionally, a bush is externally fitted to a pin portion connecting the links and the teeth of the starting wheel are meshed with the bush, so that there is a problem that the number of parts is large. On the other hand, according to the first embodiment of the present invention, since the teeth of the starting wheel 4 are meshed with the engaging portions 10B, the parts are simplified. This makes it possible to reduce the weight of the elastic footwear plate, thereby improving the driving efficiency and reducing the cost. further,
The adjacent cores 10, 10 are hinged 10a, 10b, 1
0c, 10d, and left and right tread portions 10A, 1
0A is used only for rolling the rolling wheels 3, 5, and 6. As a result, the tread portions 10A, 10A can be reduced in size, so that the weight of the elastic footwear plate can be reduced, driving efficiency can be improved, and costs can be reduced. Furthermore, the adjacent cores 10 and 10
The hinges 10a, 10b, 10c, and 10d serve as strength members because they are connected at 0a, 10b, 10c, and 10d. As a result, the thickness t1 of the cores 10, 10 can be reduced, so that the weight can be reduced.
Since the total height H1 of the elastic footwear plate 1 can be reduced,
Clearance L between vehicle body 7 and elastic footwear board 1 shown in FIG.
2 can be reduced. Thereby, the stability of the vehicle body and the overall height of the vehicle can be reduced, so that the transportability is improved. Also,
The conventional pin structure for connecting links has a problem in that the pin length is adjusted to the width of the link, the surface pressure of the pin is high, and the pin is worn out at an early stage. According to the first embodiment of the present invention, the adjacent cores 10, 10 are connected by the hinge portions 10a, 10b, 10c, 10d having a predetermined length L1, so that the surface pressure of the hinge pin 11 can be reduced. Thus, there is no problem that the hinge pin 11 is worn out early. According to the elastic footwear plate 1 configured as described above, the core members 10, 10
In addition, the boulders and the like do not bite into the tread portions 10A, 10A, preventing uneven wear, breakage, and the like, and having a small twist, so that deformation of the core and tread portions, cracking, and separation and cracking of the elastic body are suppressed. The durability can be improved.

Next, a description will be given of a second embodiment of the endless track elastic cuff according to the present invention with reference to FIGS. FIG.
1 is a view as seen from the non-ground surface side. The core body 20 has left and right tread portions 20A, which contact the tread surfaces of the rolling wheels such as the idler wheel 3, the upper rolling wheel 5 and the lower rolling wheel 6 on the non-ground surface side,
20A are integrally formed. The left and right treads 2
0A and 20A have engaging portions 20B with which the teeth of the starting wheel 4 mesh.
Are integrally formed. The elastic body 12 extends from the grounding surface side to the non-grounding surface side and is bonded to the core body 20. The elastic body 22 is coated and adhered to the core body 20, and the treads 20A, 20A and the engaging portion 20B that meshes with the teeth of the starting wheel 4 are integrally formed.

As shown in FIGS. 9 to 12, a hinge 20a is integrally formed on the right side and a hinge 20b on the left side of the core 20, and a hinge 20c is integrally formed on the front. The hinge portions 20a, 20b, 2 of the core body 20
0c is larger than the mounting width of the left tread portion 20A and the right tread portion 20A, and is set to a predetermined length L1 in the width direction of the core body 20 to connect adjacent core bodies 20 together. . As shown in FIG. 9, the hinges 20a and 20b of the core 20 position the hinges 20c of the adjacent core 20, and the hinge pins 21 are inserted into and engaged with the hinges 20a, 20b and 20c. It is supposed to. The hinge pin 21 corresponds to a master pin used for a conventional iron crawler belt, and is detachable by a tool.
In this way, as shown in FIG. 13, the core body 20 of the elastic crawler board 1 is formed by continuously connecting a large number of portions Q in the longitudinal direction of the crawler as shown in FIG. Next, the part P in FIG.
4 will be described. The teeth of the starting wheel 4 are the engaging portions 2 of the core body 20.
0B is engaged. A driving force from a driving device (not shown) is transmitted to the starting wheel 4 so as to rotate the elastic footwear plate 1. As shown in the figure, the teeth of the starting wheel 4 mesh with the engaging portions 20B of the core body 20 every one tooth. As described above, the teeth of the starting wheel 4 are meshed with the engagement portions 20B of the core body 20 every one tooth, so that the teeth are compatible with the conventional iron crawler of a hydraulic excavator or bulldozer and can be replaced. . According to the second embodiment, there are three hinge portions to reduce the weight and to simplify the parts.
This makes it possible to reduce the weight of the elastic footwear plate, thereby improving the driving efficiency and reducing the cost.
Other than this, it has the same function as the first embodiment, and the description is omitted here.

Next, a third embodiment of the endless track elastic footboard according to the present invention will be described with reference to FIGS. FIG. 16 is a view of the elastic footwear plate 1 shown in FIG. The core body 30 has left and right tread portions 3 that contact the tread surfaces of the rolling wheels such as the idler wheel 3, the upper rolling wheel 5 and the lower rolling wheel 6 on the non-ground surface side.
0A and 30A are integrally formed. A connecting portion 30B is formed integrally with the left and right tread portions 30A, 30A. The core body 30 extends from the grounding surface side to the non-grounding surface side and covers and is bonded to the elastic body 32. Here, the elastic body 32 is coated and adhered to the core 30 and the tread 30
A, 30A and hinge part 30 meshing with teeth of starting wheel 4
a hinge part 30 for connecting the cores 30 with the adjacent cores 30;
The one in which a and 30b are integrally formed is referred to as an elastic footwear board 1.

15 to 18, the core 30 has a hinge portion 30a on the rear right side, a hinge portion 30b on the left side, and a hinge portion 30c on the front side. The hinge portions 30a, 30b,
30c is larger than the width of the left tread portion 30A and the right tread portion 30A, and is set to a predetermined length L1 in the width direction of the core 30 to connect the adjacent cores 30 together.
As shown in FIG. 15, the hinge portions 30a and 30b of the core 30 position the hinges 30c of the adjacent core 30, and the hinge pins 31 are inserted into and engaged with the hinges 30a, 30b and 30c. It is supposed to. The hinge pin 31 corresponds to a master pin used for a conventional iron crawler belt, and is detachable by a tool. In this way, as shown in FIG. 20, the core body 30 of the elastic crawler board 1 is provided with a large number of portions Q in the longitudinal direction of the crawler as shown in FIG. Next, the part P in FIG.
This will be described below. The teeth of the starting wheel 4 are hinge portions 3 of the core body 30.
0c. A driving force from a driving device (not shown) is transmitted to the starting wheel 4 so as to rotate the elastic footwear plate 1. As shown in the figure, the teeth of the starting wheel 4 mesh with the hinge portions 30c of the core body 30 every one tooth. As described above, the teeth of the starting wheel 4 are meshed with the hinge portion 30c of the core body 30 every one tooth, so that the teeth are compatible with the conventional iron crawler of a hydraulic excavator or bulldozer and can be replaced. The third embodiment shown in FIGS. 15 to 20 is different from the first embodiment in that three hinge portions 30a, 30b, and 30c fixed to the front and rear of the core body 30 are provided.
The difference is that the teeth of the starting wheel 4 mesh with the hinge portion 30c. According to the third embodiment, the weight is reduced by using three hinge portions, and the teeth of the starting wheel 4 mesh with the hinge portions 30c, so that the parts are simplified. This makes it possible to reduce the weight of the elastic footwear board,
The driving efficiency is improved and the cost is reduced. Other than this, it has the same function as the first embodiment, and the description is omitted here.

Next, a fourth embodiment of the endless track elastic track plate according to the present invention will be described with reference to FIGS. This embodiment has the same configuration as the first embodiment except that a projection is provided on the grounding surface side of the hinge portion. The same portions are denoted by the same reference numerals, and description thereof will be omitted. Only different portions will be described. explain. FIG. 23 is a view as viewed from the non-ground surface side of the elastic footwear plate shown in FIG. 22, FIG. 23 is a view as viewed from E in FIG. 22, and FIG. 24 is a view as viewed from G in FIG. Hinge portions 10a, 10b, 10
Protrusions 13a, 13b, 13c, and 13d that serve as grocers are provided on the ground surface side of c and 10d, respectively. Then, the protrusions 13a, 13
The distance h to the tips of b, 13c and 13d is set to a predetermined height. As shown in FIG. 25, the core body 10 of the elastic crawler plate is provided with a large number of portions P in the longitudinal direction of the crawler to form an endless track belt, as shown in FIG.

Next, the operation will be described. FIG. 26 shows a reverse sled state.
The adjacent elastic body 12 and the projections 13b and 13d are in contact with each other, and the reverse deflection angle α can be set to a predetermined value or less.
Therefore, the rocking motion can be reduced, and the vibration during traveling can be reduced to improve the riding comfort.

FIG. 27 shows a state in which the elastic body 12 is worn. After the elastic body 12 is worn and loses its function as an elastic footwear plate, the projection 13d bites into the ground surface during running. It generates traction and can function as an iron footboard. Further, since the grounding surface side of the core body 10 is flat, the elastic body 1 remaining when the elastic body 12 is worn is removed.
It is easy to remove 2 and use as iron footboard. In addition, when used as iron footboard, protrusions (glosa)
Since 13d is located immediately below the hinge pin 11, rocking motion during running can be reduced, and riding comfort can be improved. Other functions are the first
The description is omitted because it is similar to the embodiment.

Next, a fifth embodiment of the endless track elastic cuff according to the present invention will be described with reference to FIGS. This embodiment has the same configuration as that of the second embodiment except that a projection is provided on the grounding surface side of the hinge portion. The same portions are denoted by the same reference numerals and description thereof will be omitted. Only different portions will be described. explain. 28 is a view as seen from the non-ground surface side, FIG. 29 is a view as viewed from M in FIG. 28, and FIG. 30 is a view as viewed from N in FIG. Hinge portions 20a, 20b, 20
On the grounding surface side of FIG.
a, 23b and 23c are provided. And elastic body 1
The distance h from the ground contact surface 2 to the tips of the protrusions 23a, 23b, 23c is set to a predetermined value. The functions are the same as those of the second and fourth embodiments, and the description is omitted.

Next, a sixth embodiment of the endless track elastic track board according to the present invention will be described with reference to FIGS. This embodiment has the same configuration as that of the third embodiment except that a projection is provided on the grounding surface side of the hinge portion. The same portions are denoted by the same reference numerals, and description thereof will be omitted. Only different portions will be described. explain. 31 is a diagram viewed from the non-grounding surface side, FIG. 32 is a diagram viewed from R in FIG. 31, and FIG. 33 is a diagram viewed from S in FIG. Hinge portions 30a, 30b, 30
c, on the side of the grounding surface, the protrusions 33 each serving as a grower
a, 33b and 33c are provided. And elastic body 1
The distance h from the ground contact surface of No. 2 to the tips of the protrusions 33a, 33b, 33c is set to a predetermined value. The functions are the same as those of the third and fourth embodiments, and the description is omitted.

According to the present invention, it is possible to obtain a crawler belt elastic crawler that solves all the conventional problems.
Accordingly, it is needless to say that the present invention can be applied to small to large construction machines, and also applicable to an elastic track plate in an endless track zone of industrial machines and agricultural machines other than construction machines.

[Brief description of the drawings]

FIG. 1 is a view of an elastic crawler according to a first embodiment of the present invention as viewed from a ground contact surface side.

FIG. 2 is a view of a plurality of connected elastic footwear boards as viewed from a non-grounding surface side.

FIG. 3 is an explanatory view of the elastic footwear plate.

FIG. 4 is a sectional view taken along the line BB of FIG. 3;

FIG. 5 is an X view of FIG. 3;

FIG. 6 is a W view of FIG. 3;

7 is a detailed view of a portion P in FIG. 21. FIG.

8 is a detailed view of a portion Q in FIG. 21. FIG.

FIG. 9 is a view of a plurality of connected elastic footwear plates of the second embodiment according to the present invention as viewed from the non-grounding surface side.

FIG. 10 is an explanatory diagram of the elastic crawler plate.

FIG. 11 is a Z view of FIG. 10;

FIG. 12 is a Y view of FIG. 10;

FIG. 13 is a detailed view of a portion Q in FIG. 21;

FIG. 14 is a detailed view of a portion P in FIG. 21.

FIG. 15 is a view of a plurality of connected elastic footwear plates of the third embodiment according to the present invention as viewed from the non-grounding surface side.

FIG. 16 is an explanatory diagram of the elastic crawler plate.

FIG. 17 is a view as viewed in the direction V in FIG. 16;

FIG. 18 is a view as viewed in the direction U in FIG. 16;

19 is a detailed view of a portion P in FIG. 21. FIG.

FIG. 20 is a detailed view of a portion Q in FIG. 21;

FIG. 21 is an explanatory diagram of an endless track belt in which an elastic crawler is mounted on a construction machine.

FIG. 22 is a view of an elastic footwear board according to a fourth embodiment of the present invention as viewed from a non-ground surface side.

FIG. 23 is a view as viewed from E in FIG.

FIG. 24 is a G view of FIG. 22;

FIG. 25 is a detailed view of a portion Q in FIG. 21;

FIG. 26 is a diagram showing a reverse sled state.

FIG. 27 is a diagram showing a state when the elastic body is worn.

FIG. 28 is a view of an elastic footwear board according to a fifth embodiment of the present invention as viewed from a non-ground surface side.

FIG. 29 is an M view of FIG. 28.

FIG. 30 is an N view of FIG. 28.

FIG. 31 is a view of an elastic footwear board according to a sixth embodiment of the present invention as viewed from a non-ground surface side.

FIG. 32 is an R view of FIG. 31;

FIG. 33 is an S view of FIG. 31;

FIG. 34 is a perspective view of one example of a conventional elastic shoe.

FIG. 35 is a plan view of the same as viewed from the non-ground surface side in FIG. 34.

FIG. 36 is an explanatory view of a conventional two-piece connected elastic footwear plate.

FIG. 37 is an explanatory diagram of the elastic crawler plate.

FIG. 38 is a perspective view of three examples of conventional elastic crawler boards viewed from the ground contact surface side.

FIG. 39 is a side sectional view of the same.

FIG. 40 is an explanatory view of a state when the elastic body is worn.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 Elastic body footplate 2 Track frame 3 Idle wheel 4 Starting wheel 5 Up wheel 6 Down wheel 7 Body 10, 20, 30 Core body 11, 21, 31 Hinge pin 10a, 10b, 10c, 10d, 20a, 20b, 2
0c, 30a, 30b, 30c Hinge part 10A, 20A, 30A Tread part 10B, 20B Engagement part 12, 22, 32 Elastic body 30B Connection part A Opening 13a, 13b, 13c, 13d, 23a, 23b, 2
3c, 33a, 33b, 33c Projection

Claims (5)

[Claims] 1. A core and formed integrally with the core,
In addition, a large number of elastic footwear plates comprising left and right tread portions abutting on the tread surfaces of the rolling wheels and an elastic body which covers and adheres the core body are arranged in the longitudinal direction of the crawler, and are successively provided to form a starting wheel, a rolling wheel Endless track belt elastic body footboard, which has a front core hinge portion and a rear core hinge portion, and the adjacent core hinge portions are connected to each other. The elastic body of the endless track belt, wherein a length L1 of a hinge portion connected by a detachable hinge pin and connecting an adjacent core is larger than the width of the left tread portion and the right tread portion. Footwear board. 2. The crawler belt according to claim 1, wherein the engaging portions formed integrally with the left and right tread portions of the core, or the adjacent cores are connected to each other. An endless track belt elastic body footplate, wherein teeth of a starting wheel are meshed with a hinge portion. 3. A crawler belt according to claim 1, wherein the engaging portion formed integrally with the left and right tread portions of the core and a hinge connecting the adjacent cores. A crawler belt elastic crawler, characterized in that an opening A is formed between them. 4. The endless track according to claim 1, wherein the left and right tread portions of the core member roll by contacting the tread surfaces of the rolling wheels. Elastic footwear of obi. 5. The crawler belt according to claim 1, wherein a protrusion having a predetermined height is provided on the grounding surface side of the hinge portion. Board.