JPH06191447A - Pad for crawler and its manufacture - Google Patents

Abstract

PURPOSE:To improve the safety by connecting end members with a connecting member on which an elastic member is fixed, providing a fixed hook member engaging to one side end in the longitudinal direction of a crawler plate, while a hook member allowable to mount and demount to the other end, and furthermore, providing a spike to one side end member, in a pad for crawler vehicle. CONSTITUTION:Crawler plates 1 are combined in the endless form by track links 2 so as to compose a crawler. A pad P installed to the tread side of the crawler plate 1 is composed of both end members 3 and 4, and a connecting member 5 to connect the both end members. On the upper surface of the connecting member 5, an elastic member 6 with the hardness 65 to 95 deg. is baked and fixed. A fixed hook member 7 to engage to the end of the crawler plate 1 is provided to one side end member 3, while a demountable hook member 8 is provided to the other side end member 4 with a bolt 9 allowable to mount and demount, and the end members are connected and disconnected together with the connecting member 5 with both hook members 7 and 8. And at least on one side end member 3 or 4, a spike 11 is provided. A slipping of the vehicle on a frozen road surface can be prevented in such a way.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crawler belt pad attached to each crawler plate constituting a crawler belt used for an infinite road vehicle for protecting a traveling road surface.

[0002]

2. Description of the Related Art Conventionally, in order to protect a traveling road surface from a crawler belt, a pad is attached to a tread side of each crawler plate constituting the crawler belt. As a conventional crawler belt pad of this type, for example, one that is detachably fixed to each crawler plate as shown in Japanese Utility Model Publication No. 62-32138, or an actual Kaihei 4-
As disclosed in Japanese Patent No. 131589, it is structured such that it is baked and fixed to each shoe plate.

[0003]

In both of the above-mentioned conventional techniques, each crawler plate of the crawler belt is in contact with the traveling road surface via the elastic member, so that the traveling road surface is protected from the crawler belt, but in the traveling direction or the lateral direction. No consideration has been given to the prevention of slipping to the road, and on a frozen road surface there is a risk of slipping in the running direction or in the lateral direction, which is dangerous.

Further, in the case of the above-mentioned conventional crawler belt pad, since a relatively soft elastic member is used to protect the traveling road surface, it is used for a crawler track for a crane vehicle or an aerial work vehicle. In this case, when these working machines perform work of high lift and heavy load, the crawler belt pads are deformed and the vehicle body shakes, which is dangerous.

The present invention has been made in view of the above, and is an improved crawler pad that is detachable so that it does not slip even on a frozen road surface and the vehicle body sways even in a crane or an aerial work vehicle. It is an object of the present invention to provide a crawler belt pad that can be safely operated without any operation.

[0006]

In order to achieve the above-mentioned object, the crawler belt pad according to the present invention connects both end members 3 and 4 located at both ends in the longitudinal direction with a connecting member 5, and at the same time, connects the connecting members. 5, the elastic member 6 is fixed to the both end members 3,
A fixed hook member 7 that engages with the longitudinal end portion of the shoe plate 1 is fixed to one end member 3 of the four, and a detachable hook member that engages with the other longitudinal end portion of the shoe plate 1 to the other end member 4. 8 is detachably fixed with a bolt 9, and spikes 11, 11a and 18 are provided on at least one of the both end members 3 and 4. Further, the spikes 20 are provided on the tread side of the elastic member 19 instead of the both end members 3 and 4. Further, the hardness of the elastic member 21 is set to 65 to 99 degrees, preferably 80 to 95 degrees, and a tread member 22 made of an elastic material having a hardness lower than that of the elastic member 21 is planted on the tread surface side. Further, the planting of the tread surface member 22 is joined by pushing in the foot portion while the elastic member 21 is still soft while being molded.

[0007]

[Operation] Spikes 11 and 11 provided on the end member 4
The a and 18 come into contact with the traveling road surface to prevent them from slipping, and the vehicle can travel without slipping on the frozen road surface. Further, the spikes 20 implanted in the elastic member 19 also serve as a slip stopper. The elastic member 21 having a higher hardness is attached to the tread member 22 having a lower hardness.
Since the elastic member is restrained from being deformed when the vehicle is stopped, the tread member has an anti-slip effect when the vehicle is running. Further, in the method of manufacturing a track pad, the tread member 22 is fixed to the elastic member 21 without using an adhesive.

[0008]

EXAMPLES Examples of the present invention will be described with reference to the drawings. 1 to 6 show a first embodiment of the present invention, in which 1 is a shoe plate, and the shoe plate 1 is endlessly connected by a track link 2 to form a crawler belt. . P is a crawler belt pad according to the present invention that is removably attached to the tread side of each crawler belt 1. This crawler belt pad P is both end members 3 and 4 and a connecting member 5 that connects the end members 3 and 4. The elastic member 6 is baked and fixed on the upper surface of the connecting member 5. In addition, one end member 3 has a track plate 1
A fixed hook member 7 that engages with one end of the shoe is fixed, and a detachable hook member 8 that engages with the other end of the shoe plate 1 is detachably fixed to the other end member 4 with a bolt 9. There is.

The end member 4 for fixing the detachable hook member 7
A rectangular insertion hole 10 is provided on the upper surface of the plate 1, and a plate-shaped spike 11 is removably fitted into the insertion hole 10. The inner portion of the insertion hole 10 into which the spike 11 is inserted is open in the mounting direction of the detachable hook member 8, and the attaching portion 8a of the detachable hook member 7 contacts the side surface of the spike 11 to secure the bolt 9 to the spike 11. The spikes 11 are fixed together with the attachment / detachment hook member 8 by screwing through and threadedly attaching to the end member 4.

A groove 13 is provided on the back surface of each of the end members 3 and 4 for engaging with a ridge 12 provided at the center of the track 1 in the running direction, and fixed to each of the end members 3 and 4. Engagement holes 14, 1 in which the above-mentioned ridges 12 engage with both hook members 7, 8
5 is provided. The attachable / detachable hook member 8 is adapted to be fitted in a recess provided at the end of the end member 4. The height of the spike 11 is lower than that of the elastic member 6 by an elastic bending margin of the elastic member 6, so that the tip end of the spike 11 contacts the traveling road surface in a state where the elastic member 6 is flexibly deformed by the weight of the vehicle. Has become.

The spikes 11 are used as needed when the road surface is frozen, etc. If not used, the spacers 16 are inserted into the insertion holes 10 and fixed together with the attachment / detachment hook members 8. I'll do it. The shape of the tip of the spike 11 may be any shape as long as it is a shape that eats on a frozen road surface, but a modification thereof is shown in FIG. This spike 11
A has an L-shaped cross section and has a wide tip area, and a plurality of spike members 17a and 17b are fixed to the upper surface thereof.

When the crawler belt pad having the structure shown in the first embodiment is mounted on each crawler plate 1 for traveling, each elastic member 6 contacting the traveling road surface at this time is compressed and deformed by the weight of the vehicle. The spikes 11, 1 attached to the end member 4
The tip of 1a comes into contact with the road surface to prevent slippage,
The vehicle can be stably driven when the road surface is slippery, such as when the road surface is frozen. When the spikes 11 and 11a are not used, they are replaced with the spacer 16. Further, in this embodiment, the crawler belt pads having different lengths can be easily manufactured by preparing the connecting members 5 having different lengths in the manufacturing.

FIG. 7 shows a second embodiment of the present invention, in which one end member 4a is provided with a plurality of pin-shaped spikes 18. Each of the spikes 18 is planted by screwing, and is removed when not in use, and its screw hole is closed with a rubber plug or a screw plug. The height of each of the spikes 18 is also lower than that of the elastic member 6 by the amount of elastic deformation of the elastic member 6 so that the spike 18 contacts the road surface when the vehicle is running.

FIGS. 8 and 9 show a third embodiment of the present invention, in which a plurality of pin-shaped spikes 20 are planted on the tread surface of the elastic member 19 of the crawler belt pad. Each of the spikes 20 is detachably screwed to a nut member 20a embedded in the elastic member 19, and in this case as well, the spikes 20 are provided.
When not in use, the screw hole is closed with a rubber stopper or a screw stopper.

In the third embodiment, the spike 20 is directly planted on the tread surface of the elastic member 19 of the crawler belt pad, so that the anti-slip effect can be remarkably obtained. Further, since each of the spikes 20 is supported by the elastic member 19, elastic supportability during traveling is maintained.

FIGS. 10 and 11 further show a fourth embodiment of the present invention, in which a plurality of tread members 22 made of another elastic material are planted on the tread surface of the elastic member 21 of the crawler belt pad. . The hardness of the elastic member 21 in this embodiment is relatively hard, for example, 65 to 99 degrees, preferably 80 to 95 degrees. The hardness of the tread surface member 22 to be planted for the elastic member 21 is lower than that, for example, the hardness of 60 to 70 degrees is used.

A method of implanting the tread member 22 in this embodiment will be described below. The elastic member 21 is connected to the plate-shaped connecting member
It takes a certain amount of time to cure the elastic member 21 by heat molding when it is piled up and molded. Therefore, when the elastic member 21 is sufficiently soft, the tread member 22 is pushed into and inserted into the elastic member 21, whereby the foot portion of the tread member 22 is retracted into the elastic member 21. The elastic member 21 shrinks slightly as it hardens, so that the tread member 22 is firmly fixed without using an adhesive or the like.

A ring-like fin 23 is provided on the foot portion of the tread member 22 to prevent it from coming off. Also, this tread member 2
As shown in the figure, the plane shape of 2 can be various shapes such as a quadrangle as well as a circle. Further, the size of the cross section may be changed depending on the arrangement position.

In the fourth embodiment, since the tread member 22 having a hardness lower than that of the tread surface of the elastic member 21 is planted, the shape retention of the elastic member of the crawler belt pad when the vehicle stops. It has better resistance to deformation,
As a result, swinging during crane work or high-place work is reduced, and work safety is improved.

[0020]

According to the present invention, it is possible to travel on a frozen road surface without slipping, and the safety during travel can be improved.
Further, since the elastic member 21 having a high hardness is planted with the tread member 22 having a hardness lower than the elastic member 21, the safety at the time of stoppage is improved, and the vehicle body does not shake even in a crane or an aerial work vehicle. The work by can be performed safely.

[Brief description of drawings]

FIG. 1 is a sectional view of a crawler belt pad according to a first embodiment of the present invention.

FIG. 2 is a view on arrow A in FIG.

FIG. 3 is a view on arrow B of FIG.

4 (a) is a view taken in the direction of arrow C in FIG. 1, and FIG. 4 (b) is a view taken in the direction of arrow D in FIG.

FIG. 5 is an exploded perspective view showing a main part of the first embodiment of the present invention.

FIG. 6 is an exploded perspective view showing a main part of a modified example of the first embodiment of the present invention.

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

FIG. 8 is a partially cutaway front view showing a third embodiment of the present invention.

9 is a view taken in the direction of arrow E in FIG.

FIG. 10A is a sectional view showing a main part of a fourth embodiment of the present invention. (B) is sectional drawing which shows the principal part of the 4th Example of this invention.

[Explanation of symbols]

1 ... Track plate, 2 ... Track link, 3, 4 ... End member, 5 ...
Connection member, 6, 19, 21 ... Elastic member, 7 ... Fixed hook member, 8 ... Detachable hook member, 9 ... Bolt, 10 ... Insertion hole, 1
1, 11a, 18 ... spikes, 12 ... ridges, 13 ... grooves,
14, 15 ... Engagement holes, 16 ... Spacers, 22 ... Tread members.

Claims (4)

[Claims] 1. Both-end members 3, 4 located at both ends in the length direction
And the elastic member 6 is fixed to the connecting member 5, and the one end member 3 of the both end members 3 and 4 is connected.
A fixed hook member 7 that engages with the longitudinal end portion of the shoe plate 1 is fixed to the other end member, and a detachable hook member 8 that engages with the other longitudinal end portion of the shoe plate 1 is attached to and detached from the other end member 4 with a bolt 9. Securing is possible, and spikes 11 and 11 are attached to at least one of the both end members 3 and 4.
A track pad provided with a and 18. 2. Both end members 3, 4 located at both ends in the length direction.
A connecting member 5, an elastic member is fixed to the connecting member 5, and one end member 3 of the both end members 3, 4 is provided with a fixed hook member 7 that engages with the longitudinal end portion of the shoe plate 1. A detachable hook member 8 that is fixedly attached to the other end member 4 and engages with the other end portion in the longitudinal direction of the shoe plate 1 is detachably fixed with a bolt 9, and a spike 20 is planted on the tread side of the elastic member 19. A track pad that is characterized by: 3. Both end members 3, 4 located at both ends in the length direction.
Are connected by a connecting member 5, and an elastic member having a hardness of 65 to 99 degrees, preferably 80 to 95 degrees is fixed to the connecting member 5, and the shoe plate 1 is attached to one end member 3 of the both end members 3 and 4.
A fixed hook member 7 that engages with the longitudinal end of the shoe is fixed, and a detachable hook member 8 that engages with the other end of the shoe plate 1 in the longitudinal direction is detachably fixed to the other end member 4 with a bolt 9. A crawler belt pad, wherein a tread member 22 made of an elastic material having a hardness lower than that of the elastic member 21 is planted on the tread surface side of the both end members 21. 4. Both end members 3, 4 located at both ends in the length direction.
Are connected by a connecting member 5, and an elastic member having a hardness of 65 to 99 degrees, preferably 80 to 95 degrees is fixed to the connecting member 5, and the shoe plate 1 is attached to one end member 3 of the both end members 3 and 4.
A fixed hook member 7 that engages with the longitudinal end of the shoe is fixed, and a detachable hook member 8 that engages with the other end of the shoe plate 1 in the longitudinal direction is detachably fixed to the other end member 4 with a bolt 9. In a track pad in which a tread member 22 made of an elastic material having a hardness lower than that of the elastic member 21 is planted on the tread surface side of the elastic member 21, the foot of the tread member 21 is still soft while the elastic member 21 is being formed. A method for manufacturing a crawler belt pad, characterized in that the portions are pushed in and inserted, and the elastic members 21 are coupled by curing.