JPH11301537A - Elastic pad and metal crawler for track block of metal crawler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit sure and simple installation of an elastic pad to a track block by a method wherein one end of a core material in the width direction is extended in the thickness direction at a side of the track block, the extended end clamps the track block at a reverse side, and the clamping member presses the track block against a pad body in the thickness direction. SOLUTION: An elastic pad 1 is made of a pad portion 4 made of elastic material in contact with the ground, and a core material 5 made of metal located on the non- contact side. The pad portion 4 and the core material 5 are made into one piece by baking or the like. To install the elastic pad 1 on a ground contact side of a metal track block 3 constructing a crawler 2, a hook 19 is formed on one end of the core material 5 in the width direction, and a clamping member 20 is provided on the other end. In the clamping member 20, a first member 21 is extended in the width direction from the end portion of the core material 5 to the side in the width direction of the track block 3. A second member 23 is inserted in the outside of the track block 3 in the width direction, and a fastening member 25 screwed on the second member 23 is fastened to the reverse face of the track block 3. Accordingly, the elastic pad 1 can be surely and easily installed on the track block 3 by the hook 19 and the clamping member 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elastic pad mounted on a track of a metal crawler and a metal crawler mounted with the elastic pad.

[0002]

2. Description of the Related Art Among tracked vehicles used for various works such as agriculture, civil engineering, construction, etc., those equipped with a metal crawler include all metal footwear constituting the crawler when traveling on a paved road or the like. An elastic pad made of rubber or the like is attached to the plate to prevent the generation of vibration and noise.

Conventionally, such an elastic pad is mounted on a shoe plate. (1) A nut is embedded in a rubber portion of the elastic pad, and the shoe plate is placed on the shoe from the back side in the thickness direction. (See Japanese Utility Model Laid-Open No. 6-74594) (2) A hook is formed at one end in the width direction of the core portion of the elastic pad so as to engage with one end of the footwear plate. The other end of the elastic pad in the width direction is connected by a bolt or the like penetrating the footwear plate in the thickness direction (Japanese Unexamined Patent Application Publication No.
(See Japanese Patent Application Laid-Open Nos. 9-95267 and 9-95267), and (3) a hook is formed at one end in the width direction of the core portion of the elastic pad so as to be engaged with one end of the crawler plate. A separate hook fitting engaged with the elastic pad, and the hook fitting is fixed to a side surface of the rubber portion of the elastic pad by a bolt penetrating in the width direction (actually open flat 5-8).
No. 0984), and (4) hooks are formed at both ends of the core portion of the elastic pad so as to be engaged with both ends of the crawler plate, and the engaging groove interval between both hooks is formed larger than the width of the crawler plate. Then, both hooks can be engaged with both ends of the footwear plate, and a pin that penetrates the hook member in the thickness direction is press-fitted into a widthwise gap created between the engagement groove of one hook and the footwear plate. (See JP-A-8-58647).

[0004]

In the case of the prior art (1), since it is necessary to embed nuts and bolts in the rubber portion of the elastic pad, the rubber thickness in this portion is reduced. There was a problem that the rubber portion was damaged from the portion and the rubber portion was peeled off from the core material, and the durability was poor. Also, since there are many bolting points, connection work takes time and labor, and processing for forming a hole for bolt insertion is required on the footwear plate, and for a footwear plate not having the hole, Was unfittable.

In the prior art (2), one end of the core material is engaged with the shoe via a hook, so that the mounting work is slightly easier than in the prior art (1). Since it is necessary to insert a nut or the like in the part and a hole for inserting a bolt is required in the footwear plate, it has the same disadvantage as that of the prior art (1). The prior art (3) does not require the formation of a bolt insertion hole in the footwear plate because the footwear plate is connected to the footwear plate by a hook and a separate hook metal fitting. It is necessary to embed nuts, etc., and the rubber thickness may be reduced as described above, which may cause a decrease in durability. In addition, since the bolt fastening portion is on the side surface of the elastic pad, the unevenness of the uneven road surface There is a high possibility that the bolt comes into contact with obstacles from the ground or from the side during traveling or the like, and the bolt may be damaged or rust may be formed due to adhesion of mud or the like, making removal difficult.

In the conventional example (4), since both ends of the elastic pad are attached by hooks, a bolt insertion hole is formed in the crawler or the rubber portion is made thinner as in other prior arts. However, since the pins are pressed into the hooks, they cannot be easily attached and detached. In addition, since the pin is pressed in from the ground contact side in the thickness direction, the press-fitting part of the pin approaches the ground contact side, and mud or the like is clogged in the part or rust is easily generated on the pin due to adhesion of muddy water. Was made more difficult.

In the prior art (4), although play in the width direction can be restricted by press-fitting the pin, in the thickness direction there is a risk of play due to the gap between the hook and the shoe plate. (3) had a similar problem. By the way, the above-mentioned conventional techniques (1) to
In (3), a plurality of ridges extending in the width direction are provided on the surface of the crawler plate, and the crawler plate and the crawler link are connected between the ridges at the center in the width direction of the crawler plate. The head and nut of the connecting bolt to be protruded.

[0008] Conventional example (1) for such a crawler
In the elastic pad of (2), the shape of the core material is formed in a side surface uneven shape along the footwear plate and the ridge portion, and a hole is formed in the core material in order to retract the head of the connection bolt or the like. A concave portion for storage such as a bolt head is formed in the rubber portion bonded to the core material. Further, in the prior art (3), the entire core is positioned on the connecting bolt or the like and retracted.

However, when the core material is formed along the unevenness of the footwear plate and the ridge, the back surface of the rubber portion adhered to the core material also has an uneven shape, which causes a large change in the cross section and a stress concentration. There has been a problem that the rubber portion is easily damaged by the generation, and a load is directly applied to the storage concave portion such as a bolt and the rubber portion is peeled off from the portion. In addition, when the entire core material is positioned on the connecting bolt, the thickness of the rubber portion is reduced as a whole, and there is a possibility that the original function of the elastic pad such as vibration and noise prevention may not be sufficiently performed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its main object to provide an elastic pad for a crawler plate of a metal crawler and a metal crawler that can be securely and easily attached to the crawler plate. And

[0011]

A first concrete means for solving the problems in the present invention is a pad having a pad portion made of an elastic material and a core material provided in the width direction on the back side of the pad portion. An elastic pad for a crawler footprint of a metal crawler, comprising: a main body; and mounting means for mounting the pad main body on a surface side of each footwear board in a metal crawler, wherein the mounting means includes:
A side of the shoe is extended in a thickness direction from one end in a width direction of the core material, and an extended end thereof is arranged on a back surface side of the shoe to sandwich the shoe between the pad body. It has a holding member, and the holding member has a pressing means for pressing the footwear plate against the pad body in the thickness direction.

[0012] According to this, by providing the holding member for holding the crawler plate between the pad body and the pad body, the crawler plate can be easily elasticized without forming a bolt insertion hole or the like and having a large number of bolted portions. The pad can be mounted, and the durability can be improved without reducing the rubber thickness of the pad portion. Further, by pressing the footwear plate against the pad body via the pinching means, it is possible to prevent rattling in the thickness direction of the pad body and to securely mount the elastic pad.

[0013] In a second specific embodiment, in addition to the first specific unit, the holding member includes a first member extending in a thickness direction from one end of the core member, A second member which is inserted in the width direction of the crawler so as to be freely inserted and removed and is disposed on the back surface side of the crawler; It has a fastening member which presses the back side of the above-mentioned crawler board by screwing and tightening in the direction.

According to this, since the second member constituting the holding member is inserted through the first member in the width direction of the crawler, the second member can be attached from the side position of the metal crawler. It can be done easily, and by tightening the fastening member on the back side of the footwear plate, obstacles do not come into contact with the fastening part, and muddy soil, water etc. adhere and rust is reduced, The fastening and loosening work of the fastening member can be suitably performed.

[0015] A third specific means is, in addition to the first specific means, the clipping member is a clip which pinches the core material and the footwear plate from both front and back sides with an elastically deformable member. The clipping means is configured to press the footwear plate against the pad body by the elasticity of the clip device. According to this, connection and press-contact of both can be performed simultaneously simply by sandwiching the shoe plate and the pad body with the clip device, and the mounting operation can be performed quickly and easily.

A fourth concrete means is a pad body having a pad portion made of an elastic material and a core material provided in the width direction on the back surface side of the pad portion, and the pad body is formed of each crawler plate in a metal crawler. Mounting means for mounting on a surface side of a metal crawler, the elastic pad for a crawler board comprising a metal crawler, wherein the mounting means has a thickness passing from one end in a width direction of the core material to a side of the crawler board. A first member extending in the first direction, and a second member extending from the first member to the back surface side of the footwear board and sandwiching the footwear board between the pad body and the first member. The member and the second member are detachably connected on the inner peripheral side of the metal crawler with respect to the footwear plate.

According to this, since the footwear plate is sandwiched between the pad portion and the first member and the second member, a hole for inserting a bolt is formed in the footwear plate, and a number of bolt fixing portions are formed. The elastic pad can be easily mounted without the provision of the pad, and the durability can be improved without reducing the thickness of the pad portion. Further, since the connecting portion between the first member and the second member is formed on the inner peripheral side of the metal crawler rather than the footwear plate, the connecting portion comes into contact with the ground due to running on an uneven road surface, and muddy soil, muddy water, etc. Adhesion to the connection portion is also reduced, and damage and rust on the connection portion are prevented, so that attachment and detachment can be easily performed.

According to a fifth specific means, in addition to the fourth specific means, the first member and the second member are connected by a fastening member penetrating in a width direction of the crawler. According to this, according to this, the attachment of the fastening member can be performed from the side position of the metal crawler, so that attachment and detachment can be more easily performed. The sixth specific means is the fifth method.
In addition to the above specific means, a guard portion is formed on the first member to cover a part of the fastening member projecting outward in the width direction from the first member from a surface side of the pad body. According to this, it is possible to protect the fastening member from contact with the ground and obstacles and adhesion of mud, etc. by the guard portion, and to prevent the fastening member from being damaged or rusted. The connection and detachment work of the second member can be suitably performed.

The seventh concrete means is the second, fourth, fifth,
In addition to any of the specific means described in the sixth aspect, the first member is formed integrally with the core material by bending one end of the core material. The number of parts can be reduced by being formed integrally with the core material, and the mounting on the shoe can be further simplified. Eighth specific means is, in addition to any one of the second, fourth, fifth, sixth, and seventh specific means described above, the first member or the second member being provided in the width direction between the pad body and the crawler. Characterized by being provided integrally with misalignment prevention means for preventing relative misalignment of the first and second members, whereby the first or second member is integrally provided with misalignment prevention means to reduce the number of parts. It is possible to prevent a positional shift between the footwear plate and the pad body in the width direction without increasing the number of the shoes.

According to a ninth concrete means, in addition to any one of the first to eighth concrete means, a center portion in the width direction of the core material is formed of a plurality of ridges projecting from the surface of the crawler board. It is arranged on the top surface, and both end portions in the width direction are bent to the back side from the center portion and are arranged between the ridge portions, and according to this, the back side of the pad portion In order to reduce the stress concentration as the whole does not have a severe uneven shape along the surface of the footboard, the footboard on the back side of the pad body to retreat the connecting bolts and nuts etc. between the footboard and the crawler link Even when a recess for storing the bolt head is formed at the contact portion with the core, the recess is covered from the ground side with a core material, so that the load is not directly applied to the recess. It is possible to prevent the elastic material from being damaged from the concave portion and from being separated from the core material. In addition, since the thickness of the pad portion can be ensured at both ends in the width direction of the core material, the vibration suppression and noise prevention functions are hardly impaired, and sufficient contact with obstacles from the width direction side is obtained. It is a structure that can endure.

According to a tenth concrete means, in addition to the ninth concrete means, a concave portion is provided on the grounding surface of the pad portion at a portion corresponding to a center portion in the width direction of the core material on the side of the core material. According to this, the widthwise central portion where the pad portion thickness is relatively thin is slightly floating from the ground and compared with both end portions. The received load is reduced, so that damage at the center can be prevented.

The eleventh concrete means is the first to the tenth.
In addition to any one of the specific means described above, a hook that engages with the end on the same side of the crawler is integrally formed at the end of the core material on the side opposite to the side provided with the holding member. According to this, according to this, at one end in the width direction of the core material, the hook engages with the shoe plate via the hook member, and at the other end, it is sandwiched by the sandwiching member, so that the core material can be easily clamped. An elastic pad can be attached to the pad.

Further, in the metal crawler according to the present invention, the elastic pad provided with any one of the above-mentioned first to eleventh specific means is detachably mounted on the surface side of the footwear board via the mounting means. Thus, the elastic pad can be securely and easily attached to the shoe, and the generation of vibration and noise due to running can be reliably prevented.

[0024]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 4 show a first embodiment of an elastic pad 1 according to the present invention. The elastic pad 1 is provided on a surface side (ground surface) of a large number of metal footwear plates 3 constituting an endless crawler 2. Side), and a pad body 6 having a pad portion 4 grounded to the ground and a core member 5 provided in the width direction on the back side (non-ground side) of the pad portion 4. And mounting means 7 for mounting the pad body 6 to the footwear board 3.

The pad portion 4 is made of an elastic material such as rubber or urethane, and the core material 5 is made of a metal material such as iron (a one-piece product drawn or cast or forged or a welded product of a plurality of members). Is formed by These are integrated with each other by baking, insert, bonding or the like. The crawler plate 3 is configured such that a center portion in the width direction is connected to each crawler link 2a connected endlessly by a connecting tool 8 including a plurality of bolts and nuts. Three protruding ridges 10 are formed in the crawler circumferential direction so as to extend in the width direction. In addition, footboard 3
Between the left and right links 2a at the center in the width direction and between the ridges 10, there is formed a discharge hole 11 for discharging mud accumulated between the crawler links 2a.

The core member 5 is bifurcated in the circumferential direction of the crawler so that both ends in the width direction abut against the surface of the crawler plate 3 between the respective ridges 10. Is bulged toward the ground contact surface side via the bent portion 12 to form a bulged portion 13 located on the top surface of the protruding portion 10 located at the center of the crawler board 3 in the crawler circumferential direction. In addition, the bulging portion 13
An elastic material 14 of the same quality as that of the pad portion 4 is adhered to the back surface of the connecting member 8, and a concave portion 15 for accommodating the bolt head of the connecting tool 8 is formed on the back surface of the elastic material 14.

That is, the bulging portion 13 of the core member 5 is positioned to retract the connecting member 8 protruding to the surface side of the crawler plate 3, and the concave portion 15 is covered by the core member 5 from the grounding surface side. Therefore, the core member 5 protects the concave portion 15 against a load from the grounding surface side, relieves stress concentration in this portion, breaks the elastic material from the concave portion 15,
It is prevented from peeling off from.

Further, both ends of the core member 5 are
Since the pad portion 4 is disposed between the pads, the thickness of the pad portion 4 on the front surface side can be sufficiently ensured, the pad portion 4 is strong against contact with an obstacle from the side, and the occurrence of vibration and the like is suitably suppressed. You can do it. Further, on the grounding surface of the pad portion 4, a recess 16 slightly recessed from both sides in the width direction is formed in a portion corresponding to the bulging portion 13 of the core member 5 in the width direction. The load on the central portion of the pad portion 4, which is thinner than on both sides, is reduced so that durability can be maintained.

The core member 5 and the pad portion 4 (elastic member 14) are formed with earth discharging holes 17 at positions corresponding to the earth discharging holes 11 of the footwear plate 3. Is formed at the center in the width direction of the pad portion 4 in which the concave portion 16 is formed, so that the periphery of the discharging hole 17 is less likely to be damaged by contact with the ground, and the durability of the pad portion 4 is reduced. The performance can be improved.

The mounting means 7 has a hook 19 formed at one end in the width direction of the core member 5 and a holding member 20 provided at the other end. The hook 19 is bent from the end of the core member 5 and protrudes in the thickness direction toward the back surface side of the shoe plate 3, and is further bent inward in the width direction of the shoe plate 3. Are formed in an L-shape.

The holding member 20 includes a first member 21 extending in the thickness direction from the other end of the core member 5 in the width direction of the footwear plate.
A second member 23 which is inserted through the insertion hole 22 formed in the first member 21 so as to be able to be inserted and removed in the width direction of the shoe plate 3, and a thickness direction of the shoe plate formed in the second member 23. And a tightening member 25 made of a hexagonal bolt screwed into the female screw 24 of FIG.

The first member 21 is formed integrally with the core material 5 by bending the core material 5, and when the pad body 6 is superimposed on the footwear plate 3, the front end side thereof is separated from the footwear plate 3. Is also disposed on the inner peripheral side of the crawler, and the rectangular insertion hole 22 is formed in this portion. The second member 23 includes a pin 23 a having a rectangular cross section, and a head 23 b formed at an outer end of the pin 23 a and capable of being locked around the insertion hole 22. And the pin body 23a
A protrusion 23c protruding toward the back surface of the crawler 3 is formed at the end of the pin body 2 opposite to the head 23b.
3a and the convex portion 23c are formed in a size that allows the insertion hole 22 to be inserted.

When the second member 23 is inserted through the insertion hole 22, the tip end of the pin body 23a is disposed on the back side of the shoe plate 3, and the female screw 24 is formed in this portion. When the tightening member 25 is screwed into the female screw 24 and tightened, the front end of the tightening member 25 comes into contact with the back surface of the shoe plate 3 to press the pad body 6. A procedure for attaching the pad body 6 to the shoe board 3 via the attaching means 7 will be described.
The back side of the pad body 6 is superimposed on the front side of the footwear board 3 while engaging with the corresponding end of the footwear board 3. At this time, the connecting tool 8 is inserted into the concave portion 15 formed on the back surface side of the pad body 6, and the earth discharging hole 11 of the crawler plate 3 and the earth discharging hole 17 of the pad body 6 are formed.
And are matched.

The insertion hole 2 formed in the first member 21
2, a second member 23 is inserted from the outside in the width direction of the shoe plate 3, and a fastening member 25 is screwed into a female screw 24 of the second member 23, and a distal end portion of the fastening member 25 is attached to the shoe plate. The mounting of the pad body 6 is completed by tightening while making contact with the back surface of the pad 3. That is, according to the mounting means 7 of the present invention, at one end of the elastic pad 1 in the width direction, the hook member 19 causes the shoe pad 3 to be mounted.
The elastic material layer can be reliably secured without embedding a nut or the like in the pad portion 4 by engaging with the pad member 4, and the elastic material layer can be securely secured without embedding the nut or the like at the other end side of the elastic pad 1 similarly. The second member 23 can be inserted into the crawler on the inner peripheral side of the crawler board 3 and away from the ground, so that the second member 23 can come into contact with the ground even when traveling on an uneven road surface. And the second member 23 is hardly damaged.
Is hardly removed from the insertion hole 22.

The footwear plate 3 is clamped between the pad body 6 by the tightening of the tightening member 25, and therefore, as in the prior arts (3) and (4) described above. Footboard 3
Does not rattle in the thickness direction, and has a conventional technology (1)
As shown in (2), the footboard 3 can be securely mounted without forming holes for bolt insertion.
Here, the tightening member 25 constitutes a pressing means for pressing the footwear plate 3 against the pad body 6.

Further, by screwing the tightening member 25, a gap generated between the pin body 23a and the back surface of the crawler plate 3 acts in a direction in which the gap is widened. This makes it possible to prevent the mud and the like from entering the contact portion between the fastening member 25 and the footwear plate 3 and the like, and it is difficult to remove the fastening member 25 due to clogging or rust. It is considered so that it does not become.

In the above embodiment, both ends in the width direction of the core member 5 are formed in a bifurcated manner in the crawler circumferential direction. However, as shown in FIG. Alternatively, the hook 19 may be provided with two forked portions. By doing so, the strength of the core material 5 can be improved. In addition, the two second members 23 are provided so as to correspond to the bifurcated shape of the core member 5, but they may be integrally connected to each other at the head 23b.

FIG. 6 shows a second embodiment of the present invention. In this embodiment, the first member 21 of the sandwiching member 20 is formed in a front L-shape, and the horizontal piece 21a is attached to the core 5.
Are overlapped from the front side and joined by welding. A protruding portion 27 protruding toward the footwear plate 3 is formed at an end of the core member 5, and the protrusion 27 abuts on an end of the footwear plate 3 to allow the pad body 6 and the footwear plate 3 to be in contact with each other. It constitutes a misalignment preventing means for preventing a relative misalignment in the width direction.

The pin body 23a of the second member 23 is positioned so that substantially the entire surface thereof comes into contact with the shoe plate 3, and the pin portion 23a of the threaded portion of the fastening member 25 and the corner of the shoe plate 3 are formed. Grooves 29 and 30 are formed in the contact portions, respectively.
a and the corners are prevented from being pressed against each other to prevent wear and the like of the two.

In this embodiment, since the first member 21 is formed separately from the core member 5, the number of parts increases, and the first member 21 is joined to the core member 5 by welding or the like. Therefore, the number of manufacturing steps increases, and in this respect, the first embodiment is more advantageous. FIG. 7 shows a third embodiment of the present invention. In this embodiment, the first member 21 of the sandwiching member 20 is formed integrally by bending the end of the core material 5. The same as in the first embodiment, except that a protrusion 27 that constitutes a displacement prevention means is provided integrally or by welding or the like inside the bent portion between the core member 5 and the first member 21. The contact between the protrusion 27 and the end of the shoe plate 3 causes the shoe plate 3 and the pad body 6 to contact each other.
Is prevented from shifting in the width direction.

The head 23b of the second member 23 is formed by bending one end of the pin body 23a to facilitate processing, and the back surface of the pin body 23a has an insertion hole 22b. Step 2 that can be engaged with the inside of
3d is formed, and the second member 2 is formed by the step portion 23d.
3 is being stopped. FIG. 8 shows a fourth embodiment of the present invention. In this embodiment, a first member 21 of a holding member 20 is the same as that of the first embodiment, but a pin body of a second member 23 is provided. 23a, a stepped portion 23e which is in contact with an end of the footwear plate 3 is formed.
e is different in that e constitutes the displacement prevention means.

The base of the step 23e is provided with a crawler 3
An R groove 23f is formed to avoid direct contact with the corner of the end portion, thereby preventing the second member 23 and the footwear plate 3 from being worn. FIG. 9 shows a fifth embodiment of the present invention. In this embodiment, the first member 21 of the sandwiching member 20 is formed separately from the core member 5, and the first member 21 and the second member 21 are separated from each other. The member 23 and the plate 23 are formed integrally by bending the plate material, and an engaging hook 32 bent in an L-shape toward the widthwise inside is provided at the ground-side end of the first member 21. Is formed.

On the other hand, an L-shaped front locking member 33 is fixed to the front surface of the end of the core member 5, and one of the members 33 projecting in the thickness direction of the footwear plate 3 has a width direction. A hole 34 is formed so as to penetrate through the hole 34, and the locking hook 32 is inserted into the hole 34 and the locking hook 32 is engaged around the hole 34 so that the holding member 20 is fixed to the core 5. Has become. A cavity 35 is formed in the pad portion 4 in the width direction inside of the hole 34 to allow the insertion of the locking hook 32, and an engaging portion between the locking hook 32 and the locking member 33 is formed in the pad portion 4. It is covered by.

At the end of the second member 23 of the sandwiching member 20, a projection 36 projecting toward the back surface side of the footwear plate 3 is formed, and between the projection 36 and the first member 21. In addition, between the crawler plate 3 and the second member 23, a spacer member 37 with which the tip of the fastening member 25 abuts is inserted from the circumferential direction of the crawler. The female screw 24 is screwed into the female screw 24 via a spring washer 38 so that the distal end of the fastening member 25 fits into a concave portion 37 a formed on the back surface of the spacer member 37.

According to this embodiment, the first member 21 and the second
The number of parts can be reduced by integrally forming the member 23 and the shoe 23 is pressed by the fastening member 25 via the spacer member 37. As a result, the pad body 6 can be securely fixed to the footwear plate 3 and the surface pressure applied to the footwear plate 3 and the fastening member 25 is reduced, so that damage and breakage of these members can be prevented.

Further, the protrusion 36 formed on the second member 23 reduces the intrusion of mud between the spacer member 37 and the footwear plate 3 and between the spacer member 37 and the tightening member 25, thereby ensuring reliable operation. The pressure of the crawler plate 3 is possible, and an effect of preventing the spacer member 37 from coming off is also exerted. Since the engaging portion between the first member 21 and the core member 5 is covered by the pad portion 4, the engaging portion is protected from adhesion of mud or the like.

The ends of the footwear plate 3 and the core material 5 are the first
It is positioned so as to abut the side surface of the member 21, thereby preventing displacement of the crawler plate 3 and the pad body 6 in the width direction. The spring washer 38 in the present embodiment is used.
The spacer member 27 is applicable to each of the above embodiments, and a female screw into which the fastening member 25 is screwed may be formed in the recess 37 a of the spacer member 37.

FIG. 10 shows a sixth embodiment of the present invention. In this embodiment, the holding member 20 is made of an elastically deformable member such as a spring steel and the core member 5 and the footwear plate 3 are joined together. Is formed by a clip 20 formed so as to be sandwiched from both front and back sides, and a locking projection 39 protruding in the thickness direction is formed on the surface side of the end of the core material 5. The portion 39 is engaged with one end of the clip 20 and the clip 20
Is in contact with the back side of the footwear plate 3 so as to press the footwear plate 3 against the pad body 6 by its elasticity.

That is, in this embodiment, the clip 2
Since the clamping means is constituted by the elasticity itself of 0, there is no need to provide a separate tightening member 25 as in each of the above embodiments and perform the tightening work, thereby reducing the number of parts and simplifying the mounting work. I'm trying. Also in this embodiment, a fastening member 25 composed of a bolt may be provided as shown by a two-dot chain line and screwed to the back side of the clip device 20. 3 can be pressed.

FIG. 11 shows a seventh embodiment of the present invention. In the present embodiment, the holding member 20 is
A first member 21 that bends the end of the first member 21 and extends in the thickness direction to the back surface of the shoe shoe 3, and further bent inward in the width direction from the extended end of the first member 21 to be disposed on the back surface of the shoe shoe 3. Second member 2
3, a spacer member 40 inserted into a gap in the width direction between the end of the crawler board 3 and the first member 21, and a fastening member 25 for pressing the back surface of the crawler board 3 in the thickness direction, The spacer member 40 includes a spacer portion 40 a inserted in the crawler circumferential direction with respect to the gap between the crawler plate 3 and the first member 21, and a bend from the spacer portion 40 a to a rear side of the second member 23. It is composed of a fixed portion 40b to be superimposed.

The second member 23 is formed with an insertion hole 41 penetrating in the thickness direction so that the fastening member 25 can be inserted through the hole 41 and the fixing portion 40b of the spacer member 40 can be inserted. Is formed with a female screw hole 40c penetrating in the thickness direction, so that the fastening member 25 is screwed. That is, in the present embodiment, the first,
The rattling in the width direction is suppressed by inserting the spacer member 40 into the gap between the footwear plate 3 and the first member 21 that is generated when the second members 21 and 23 are engaged with the end of the footwear plate 3. Further, by screwing a tightening member screwed into the fixing portion 40b of the spacer member 40, the crawler plate 3 is attached to the pad body 6
It is pressed against the side to prevent backlash in the thickness direction. Further, since the fastening member 25 is screwed to the spacer member 40 and the fastening member 25 is pressed against the footwear plate 3, the spacer member 40 is securely fixed.

The insertion hole 41 of the second member 23 may be a female screw hole into which the tightening member 25 is screwed. In this case, the female screw hole 40c is inserted into the insertion hole through which the tightening member 25 is inserted. It may be. FIG. 12 shows an eighth embodiment of the present invention. In this embodiment, the core member 5 of the elastic pad 1 is positioned on the top surface of the ridge 10 of the crawler plate 3 and the core member Bearing portions 3 projecting from both ends of 5 to the back side
1 is in contact with the surface of the footwear plate 3.

The holding member 20 is formed in a U-shape when viewed from the front. A piece 50a on the ground side is inserted into an insertion hole 31a formed on the side surface of the support portion 31, and a piece 50b on the back side of the holding member 20 is formed. Abuts on the back surface of the shoe plate 3, and a female screw 50c with which the fastening member 25 is screwed is formed in this portion.
Also, a protrusion 50d projecting toward the core member 5 is formed at the end of the one piece 50a on the ground side to abut the back surface of the core member 5, and the base of the piece 50a is engaged around the insertion hole 31a. An engaging protrusion 50e is formed, and the protrusion 50e prevents the holding member 20 from being removed.

In this embodiment, the end of the core member 5 is arranged at a position raised from the surface of the shoe plate 3.
Piece 50a of the sandwiching member 20 using the gap between the
Can be inserted and fixed.
The side piece 50f closes the insertion hole 31a to prevent intrusion of mud or the like from the portion. FIG. 13 shows a ninth embodiment of the present invention.
This embodiment shows the fifth embodiment.
As in the embodiment (see FIG. 9), the first member 21 of the holding member 20 is formed separately from the core material 5 and
The member 21 and the second member 23 are integrally formed by bending a plate material, and a locking hook 32 is formed at the ground-side end of the first member 21 inward in the width direction. At the widthwise end of the core member 5, a locking projection 52 is formed which protrudes toward the ground and is engaged with the locking hook 32.

Further, on the outer side in the width direction of the locking projection 52, a lateral restricting portion 53 extending toward the rear surface side is formed to be bent, and the first and second members are formed at the base of the lateral restricting portion 53. 2
An insertion hole 54 through which the first and the second 23 can be inserted is formed. According to the present embodiment, the first member 21 is inserted from the back side into the insertion hole 5.
4 or the second member 23 is inserted through the insertion hole 54 from the front surface side, and the locking hook 32 is engaged with the locking projection 52, and is tightened into the female screw hole 24 formed in the second member 23. Attached member 2
5 is screwed and tightened, and the footwear plate 3 is pressed against the core material 5 by the tightening member 25.

The lateral restricting portion 53 presses the first member 21 from the outside in the width direction to restrict the position. The side of the restricted first member 21 around the insertion hole 54 of the footwear plate 3 and the core member 5 is formed. Are in contact with each other to prevent the relative positions of the two 3 and 5 from shifting in the width direction. Note. In the present embodiment, the configuration in which the locking hook 32 is covered with the spacer member 37, the protrusion 36, and the pad portion 4 in the fifth embodiment can be adopted.

FIG. 14 shows a tenth embodiment of the present invention. In this embodiment, the sandwiching member 20 extends from the end of the core material 5 to the width direction side of the crawler plate 3 in the thickness direction. It has a first member 21 that extends, and a second member 23 that extends inward in the width direction from the first member 21 to the back surface side of the shoe plate 3 and sandwiches the shoe plate 3 with the pad body 6. , The second member 23 and the first
The member 21 is detachably connected to the crawler inner peripheral side of the crawler plate 3 by a fastening member 42 made of a bolt.

The first member 21 is formed integrally by bending the end of the core member 5.
A through hole 43 for a fastening member 42 penetrating in the width direction is formed in the crawler inner peripheral side of the crawler plate 3. The second
The member 23 is formed in an L-shape when viewed from the front, and a female screw 44c with which the fastening member 42 is screwed is formed on a vertical piece 44a that is superimposed on the inner side in the width direction of the first member 21. Is configured so that the crawler plate 3 is sandwiched between the horizontal piece 44b and the pad body 6 by the horizontal piece 44b.

Further, in the second member 23,
A protrusion 44d that constitutes a means for preventing displacement is integrally formed in a gap in the width direction between the first member 21 and the first member 21. The protrusion 44d shifts the position of the crawler plate 3 and the pad body 6 in the width direction. Prevention is being attempted. In the present embodiment, since the first member 21 and the second member 23 that constitute the holding member 20 are connected on the crawler inner peripheral side of the crawler plate 3, the connection portion moves away from the ground, and When traveling on a road surface or the like, the fastening member 42 is less likely to come into contact with the ground, so that damage to the bolt and the like can be prevented. Also, rust due to adhesion of muddy water and the like is reduced, and attachment and detachment can be easily performed. Has become.

FIG. 15 shows an eleventh embodiment of the present invention. In this embodiment, the first member 21 is constituted by an L-shaped member as viewed from the front, and , The point that the protrusion 44c for preventing the displacement of the footwear plate 3 and the pad body 6 in the width direction is fixed to the second member 23 by welding, the fastening member 42 is connected to the bolt 42a and the nut 4
2b, the first piece 44b of the second member 23 is formed with an insertion hole 44e through which the fastening bolt 42 is inserted.
Although it is different from the embodiment of FIG. 0, the same operation and effect as those of the embodiment can be obtained.

FIG. 16 shows a twelfth embodiment of the present invention, in which the first member 21 is formed integrally by bending the core member 5, and the first member 21 and the end of the footwear plate 3 are formed. The spacer member 46 interposed between the first member 21, the spacer member 46, and the vertical piece 44a of the second member 23 is inserted through the through hole 47 in the thickness direction formed on the core member 5 side. Insertion holes 43 and 46 formed in
The fastening bolts 42a are inserted through the nuts 42a through the nuts 42a and 44e.

The pad body 6 side of the first member 21 is bent so as to protrude in the width direction, and this protruding portion covers the head of the fastening bolt 42a from the pad portion 4 side. 48. According to the present embodiment, the spacer member 46 constitutes a displacement prevention means for preventing a displacement in the width direction between the crawler 3 and the pad body 6, and the guard portion 48 causes the fastening bolt 42 b to move to the ground side. Thus, the fastening member 42 can be prevented from being damaged, rusted, and the like.

It is preferable that the projecting amount of the guard portion 48 is equal to or larger than the projecting amount of the head of the fastening bolt 42a. Although the spacer member 46 is inserted in the thickness direction of the footwear plate 3, it is not a member that presses a pin in the thickness direction as in the prior art (4) described above, but a spacer member. 46 is inserted through the insertion hole 47 of the core member 5, and a fastening bolt 42 a and a nut 42 b are formed between the first and second members 21 and 23.
Is tightened, so that it can be easily pulled out by loosening the fastening bolts 42 and the like, so that the detachability is not impaired.

FIG. 17 shows a thirteenth embodiment of the present invention. In this embodiment, the second member 23 is constituted by a hexagon nut 42b screwed with a fastening bolt 42a, and the nut 42b and the pad main body are formed. 6, and the footwear plate 3 is sandwiched therebetween. Also, the second member 23 (nut 42b)
A nut 49 having a diameter larger than that of the second member 23 is interposed between the first member 21 and the first member 21 and is screwed to the fastening bolt 42a. And constitutes a means for preventing displacement in the width direction.

According to this embodiment, since the nuts 42b and 49 are used as the second member 23 and the misalignment preventing means, the number of parts can be reduced, the processing of the members can be omitted, and the cost can be reduced. The rotation of the fastening bolt 42a is prevented by bringing the side surface of the nut 42b into contact with the back surface of the footwear plate 3.

The present invention is not limited to the above embodiments, and can be appropriately designed and modified. For example, the holding members shown in the above embodiments can be formed at both ends in the width direction of the core material. The material and the like of the core, the holding member and the like are not limited to metal, but may be hard resin. Further, in each of the above-described embodiments, the crawler plate having three ridges formed in the crawler circumferential direction on the surface side is exemplified. The mounting means (holding member) according to the present invention can be applied to a plate.

[0067]

As described above in detail, according to the present invention, the elastic pad can be securely and easily attached to the crawler plate of the metal crawler, and can be suitably removed.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a main part showing a first embodiment of the present invention.

FIG. 2 is a side view of the main part.

FIG. 3 is a front sectional view of the elastic pad.

FIG. 4 is a plan view of the elastic pad on the ground side.

FIG. 5 is a side view showing another embodiment of the main part.

FIG. 6 is a front sectional view of a main part showing a second embodiment of the present invention.

FIG. 7 is a front sectional view of a main part showing a third embodiment of the present invention.

FIG. 8 is a front sectional view of a main part showing a fourth embodiment of the present invention.

FIG. 9 is a front sectional view of a main part showing a fifth embodiment of the present invention.

FIG. 10 is a front sectional view of a main part showing a sixth embodiment of the present invention.

11A and 11B show a seventh embodiment of the present invention, wherein FIG. 11A is a front sectional view of a main part, and FIG. 11B is an exploded perspective view.

FIG. 12 is a front sectional view of a main part showing an eighth embodiment of the present invention.

FIG. 13 is a front sectional view of a main part showing a ninth embodiment of the present invention.

FIG. 14 is a front sectional view of a main part showing a tenth embodiment of the present invention.

FIG. 15 is a front sectional view of a main part showing an eleventh embodiment of the present invention.

FIG. 16 is a front sectional view of a main part showing a twelfth embodiment of the present invention.

FIG. 17 is a front sectional view of a main part showing a thirteenth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Elastic pad 3 Footwear board 4 Pad part 5 Core material 6 Pad main body 7 Attachment means 20 Nipping member 21 First member 23 Second member 25 Fastening member 42 Fastening member

Claims (12)

[Claims] A pad body having a pad portion made of an elastic material and a core material provided in a width direction on a back surface side of the pad portion;
Mounting means for mounting the pad body on the surface side of each crawler board in the metal crawler, the elastic pad for a crawler board of a metal crawler, wherein the mounting means is provided from one end in the width direction of the core material. A side of the crawler is extended in a thickness direction, and a stretched end thereof is disposed on a back surface side of the crawler, and a clamping member for clamping the crawler between the pad body and the pad body is provided. An elastic pad for a metal crawler footwear plate, comprising a pressing means for pressing the footwear plate against the pad body in the thickness direction. A first member extending in a thickness direction from one end of the core member; and a first member inserted in the first member so as to be able to be inserted into and removed from the first member in a width direction of the shoe plate. And a second member disposed on the back side of the second member.
The metal crawler according to claim 1, further comprising: a tightening member that presses a back surface side of the footwear plate by screwing the member in a thickness direction of the footwear plate and fastening the member. Elastic pad for footwear. 3. The clipping member is constituted by a clip which clamps the core material and the crawler plate from both front and back sides by an elastically deformable member, and the clamping means is configured by the elasticity of the clip. The elastic pad for a metal crawler footwear board according to claim 1, wherein the footwear board is configured to be pressed against the pad body. 4. A pad body having a pad portion made of an elastic material and a core material provided in a width direction on a back surface side of the pad portion;
Mounting means for mounting the pad body on the surface side of each crawler board in the metal crawler, the elastic pad for a crawler board of a metal crawler, wherein the mounting means is provided from one end in the width direction of the core material. A first member extending laterally of the crawler in the thickness direction; and a second member extending from the first member to the back side of the crawler and sandwiching the crawler with a pad body. Characterized in that the first member and the second member are detachably connected on the inner peripheral side of the metal crawler with respect to the crawler plate, the elastic pad for a crawler metal crawler plate being provided. . 5. The crawler according to claim 4, wherein the first member and the second member are connected to each other by a fastening member penetrating in a width direction of the crawler. Elastic pad. 6. A guard portion is formed on the first member to cover a part of the fastening member projecting outward in the width direction from the first member from a surface side of the pad body. Item 6. An elastic pad for a crawler plate of a metal crawler according to Item 5. 7. The metal member according to claim 2, wherein the first member is formed integrally with the core member by bending one end of the core member. Elastic pad for crawler footboard. 8. The device according to claim 1, wherein the first member or the second member is integrally provided with a displacement preventing means for preventing a relative displacement between the pad body and the shoe plate in the width direction. The elastic pad for a crawler board of a metal crawler according to 2, 4, 5, 6 or 7. 9. A widthwise central portion of the core material is disposed on a top surface of a plurality of ridges protruding from a surface of the crawler board, and both widthwise end portions of the core material are located on the back side of the central portion. Characterized by being bent to the side and disposed between the ridges.
9. The elastic pad for a crawler board of a metal crawler according to any one of 8. 10. The grounding surface of the pad portion, wherein a recessed portion is formed on the core material side at a portion corresponding to a center portion in the width direction of the core material. An elastic pad for a track plate of the metal crawler according to the above. 11. A hook member for engaging with the end of the core member on the opposite side of the core member in the width direction of the core member opposite to the side provided with the holding member is integrally formed. Claim 1 to
11. The elastic pad for a crawler board of a metal crawler according to any one of 10 above. 12. A crawler made of metal, wherein the elastic pad according to claim 1 is detachably mounted on a front surface of a shoe plate via the mounting means.