JP2572956Y2 - Track pad - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crawler pad which can be used by attaching to a crawler plate of a crawler for dry land used in a bulldozer.

[0002]

Heretofore from track to protect the road surface, it is attached a pad detachably on the tread side of the crawler plate constituting the track. A conventional crawler belt pad of this type is disclosed, for example, in Japanese Utility Model Laid-Open No. 3-24485. As shown in FIG. 20, this prior art device has a substantially quadrangular prism-shaped pad body a made of a hard rubber material, and is detachably fixed to a longitudinal end of the pad body a with a bolt b. The pad body a has a groove d on the bottom surface of the pad body a for fitting into a ridge (grocer) of the crawler plate. By engaging with the ridges of the crawler plate, the pad attached to the crawler plate with the two hook members c, c engages with the crawler plate in the running direction thereof.

[0003]

In the above-described conventional crawler belt pad, the engagement between the crawler belt and the crawler board in the running direction is performed by inserting a groove d of a pad body a made of a rubber member into a ridge of the crawler board. because it was made by engaging said protrusion is an appropriate position, for example, have field if such an intermediate portion of the traveling direction the width of the track shoe is strong
There is a problem in that it cannot be used when the ridge is high, such as a footprint for a dry land for a bulldozer, and the applicable models are limited.

The present invention has been made in view of the above, and is intended for a crawler track in which a crawler pad can be mounted on each crawler board without shifting in a running direction without relying on ridges of the crawler board. It is intended to provide a pad.

[0005]

In order to achieve the above-mentioned object, a crawler belt pad according to the present invention is a crawler belt pad to be attached to a tread surface of a crawler board 1, comprising: an elastic member constituting a tread surface; A reinforcing member that is integrally fixed, a fixed hook member that is fixed to one end of the reinforcing member and is shaped to engage with an end of the shoe plate, and a bolt, a nut, or the like, on the other end of the reinforcing member. A detachable hook member detachably fixed by a fastening member and shaped to engage with an end of the crawler plate, and a link attached to the reinforcing member and protruding from a tread surface of the crawler plate constituting the crawler belt; bolts, placed in the direction of travel of the track
Thus, an engagement portion is provided which is always in contact with and engaged with. Further, in the crawler belt pad having the above configuration, the reinforcing member is provided with a ridge locking portion that engages with the ridge of the crawler plate.

[0006]

[Work] A fixed hook member is engaged with one end of a crawler plate, and a detachable hook member is engaged with the other end of the crawler plate. Pads are attached to the tread side of the track. At this time, the engaging member provided on the reinforcing member of the track pad is Oite at least track direction of travel <br/>, are engaged at all times without any gap abuts. In the case where the reinforcing member is provided with the ridge locking portion, the ridge locking portion is engaged with the ridge of the crawler plate, and is more firmly engaged in the traveling direction.

[0007]

[Embodiment] An embodiment of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a bulldozer and a footwear plate for dry land, and each footwear plate 1 has four link mounting bolts 2.
And are connected endlessly by a track link 3 which is connected by using a crawler belt. Reference numeral 4 denotes a crawler pad according to the present invention which can be easily attached to and detached from the tread side of each of the crawler boards 1. The crawler pad 4 includes an elastic member 5 constituting a tread surface and the elastic member 5. A core bar 6 is a reinforcing member to be embedded, a fixed hook member 7 fixed to one end of the core bar 6, and a detachable hook member 8 detachably fixed to the other end.

The crawler pad 4 is provided with a fixed hook member 7.
By engaging the hook members 8 with the both sides of the shoe plate 1, the hook members 8 can be attached to the respective shoe plates 1. The attachment / detachment hook member 8 is fixed with a bolt 10 screwed to a nut member 9 fixed to the cored bar 6. Alternatively, the nut member may be formed as a bolt member, penetrated through the detachable hook member 8, and screwed with a nut to fix the detachable hook member 8. A concave portion 5a is formed at an end of the elastic member 5,
A bolt 10 or a nut fits into this portion so that it does not get in the way.

On the other hand, the connection between the crawler belt pad 4 and the crawler board 1 in the running direction is performed by the cored bar 6. That is, the sectional shape of the cored bar 6 in the running direction is as shown in FIG.
a is is provided with, also the longitudinal direction of the intermediate portion in the longitudinal direction central portion 6b elastic member as shown in Figure 1 5 of the metal core 6
The center portion 6b is provided with four fitting holes 11 into which the four link mounting bolts 2 are fitted. The elastic member 5 corresponding to the fitting hole 11 is also provided with a hole into which the link mounting bolt 2 is loosely fitted.

In the above construction, in order to attach the crawler belt pad 4 to the crawler board 1, the one fixed hook member 7 is engaged with one end of the crawler board 1 with one detachable hook member 8 removed. Meanwhile, the ridge locking portion 6a is engaged with the ridge 1a of the crawler board 1 so as to follow the tread surface of the crawler board 1. Thereby, the fitting hole 11 provided in the central portion 6b of the cored bar 6 is
Fits. At this time, the fitting hole 11 and the link mounting bolt
As shown in FIG. 2, mating with the track 2
From the time of assembling to attach to the footwear board 1, ie, always in the running direction
Are brought into contact with and engaged with each other. In this state, the detachable hook member 8 is engaged with the other end of the footwear board 1 and is fixed to the cored bar 6 with the bolt 10.

In this mounted state, the crawler belt pad 4 is engaged with the hook members 7, 8 and the metal core 6 and the link mounting bolt 2 in the width direction of the crawler belt. In the running direction, the ridge 1a, the metal core 6, and the metal core 6 and the link mounting bolt 2 are always in contact and engaged in the running direction, and are firmly connected in the width direction and the running direction of the crawler belt 1. The crawler belt in this state is grounded with the top surface of the elastic member 5 of the crawler belt pad 4 serving as a tread surface, and can run without damaging the road surface.

In the above embodiment, the engagement of the crawler belt in the traveling direction is performed by the ridge 1a and the ridge locking portion 6a, and the link mounting bolt 2 and the metal core 6. May be eliminated from the engagement with the ridge locking portion 6a. FIG.
The following shows an embodiment in which the ridge locking portion 6a is not provided.

In the embodiment shown in FIG. 4, FIG. 5, and FIG. 6, the width of the crawler belt pad 4 is such that it comes into contact with a flat portion of the crawler plate 1 from which the ridge 1a is detached. Central part 6b in the direction
Space 1 slightly higher than link mounting bolt 2 below
2, and abutment plates 13, 13 that abut against front and rear end surfaces of the link mounting bolt 2 in the traveling direction in the traveling direction of the space 12 are provided upright.

In the crawler belt pad 4 of this embodiment, however, the contact plates 13, 1 are
3 in the running direction.

FIG. 7 shows another example in which the contact plate 13 is used. In this example, the contact plate 13 is formed in an outer shape so as to circumscribe the four link mounting bolts 2. According to this configuration, the width of the crawler belt in the width direction can also be engaged with the link mounting bolt 2 by the contact plate 13.

In this embodiment, the contact plate 13 may be located inside the four link mounting bolts 2 as shown by a chain line in FIG.

FIGS. 8 and 9 show the contact plate 13.
Pipes 14 to be fitted to the respective link mounting bolts 2
Is fixed to the core 6.

In the embodiment shown in FIGS. 10 and 11, an elastic member 5 constituting a tread surface is fixed to a frame base 15 formed in a frame shape by baking or the like, and is fixed to one end of the frame base 15. A hook member 7 is fixed, and a detachable hook member 8 is attached to the other end.
Are detachably connected. Abutment plates 13, 1 that abut against link mounting bolts 2 at the center of frame 15
3a is fixed. According to this embodiment, the weight of the expensive elastic member 5 can be reduced, and the cost can be reduced.

FIG. 12 to FIG. 17 show an example in which engaging pieces 17a and 17b are provided on the metal cores 16a and 16b so as to always contact and engage with the link mounting bolts 2. Of these, FIGS. 14 shows a configuration in which a separate engaging piece 17a is welded to a core 16a, and those shown in FIGS. 15 to 17 use a part of the core 16b as an engaging piece 17b. Things.

FIGS. 18 and 19 show the mounting piece 8 of the hook 8.
An example is shown in which a can be embedded in the elastic member 5 so that the strength of the end of the elastic member 5 on the side of the detachable hook member 8 can be improved. That is, the locking tongue piece 18 embedded in the elastic member 5 is fixed to the end of the cored bar 16a, and the mounting piece 8a of the detachable hook member 8 is inserted into the locking tongue piece 18, and the above-mentioned mounting piece 8a is inserted into the mounting piece 8a. Along with the locking tongue piece 18, the elastic member 5 is fixed to the end of the metal core 16 a with a bolt 19 from the end face side. In this case, the bolt 19 is fitted into the elastic member 5 using a hexagon socket head bolt.

With this configuration, the mounting piece 8 of the detachable hook member 8 is provided.
The elastic member 5 is extended from the position a to the end side, and the strength of the elastic member 5 in this portion is increased, so that the elastic member 5 does not drop out.

[0022]

According to the present invention, the crawler belt pad 4 can be attached to each crawler board without shifting in the running direction without relying on the ridges (grocers) of the crawler board 1. Therefore, the bulldozer can be easily mounted on the track plate of the track for dry land. In particular, reinforcing members
Attach a link that protrudes from the tread of the track that constitutes the track
Bolts always abut and engage in the direction of track travel
The crawler pad is connected to the crawler
From the time of installation, the link attachment of the footwear via this reinforcing part
With no clearance in the running direction.
This allows the track pad to be
There is no deviation in the running direction, and there is play in the running direction.
It can be attached firmly without kinking.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a view taken in the direction of arrow A in FIG. 1;

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a sectional view showing another embodiment of the present invention.

FIG. 5 is a view taken in the direction of the arrow C in FIG. 4;

FIG. 6 is a sectional view taken along line DD of FIG. 4;

FIG. 7 is a front view showing another example of an engaging portion with a link mounting bolt.

FIG. 8 is a front view showing another example of an engaging portion with a link mounting bolt.

9 is a sectional view taken along the line EE in FIG. 8;

FIG. 10 is a perspective view showing an example in which a reinforcing member is formed in a frame shape.

11 is a sectional view taken along the line FF in FIG. 10;

FIG. 12 is a cross-sectional view showing an example in which an engaging member that engages with a link mounting bolt is fixed to a reinforcing member.

13 is a view as viewed in the direction of the arrow G in FIG.

FIG. 14 is a perspective view showing a reinforcing member in the embodiment shown in FIG.

FIG. 15 is a partially broken cross-sectional view showing an example in which an engaging member that engages with a link mounting bolt is provided integrally with a reinforcing member.

16 is a sectional view taken along the line HH in FIG.

FIG. 17 is a perspective view showing a reinforcing member in the embodiment shown in FIG.

FIG. 18 is a cross-sectional view showing another example of the coupling portion of the detachable hook member.

19 is a view as viewed from the direction of the arrow I in FIG. 18;

FIG. 20 is an exploded perspective view showing a conventional crawler belt pad.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Footboard, 1a ... Protrusion, 2 ... Link mounting bolt, 3 ...
Track link, 4 ... track pad, 5 ... elastic member,
6, 16a, 16b: core metal, 6a: ridge engaging portion, 6b ...
Central part in longitudinal direction, 7: fixed hook member, 8: detachable hook member, 9
... nut member, 10, 19 ... bolt, 11 ... fitting hole, 1
3, 13a: contact plate, 14: pipe, 15: frame base.

Claims (2)

(57) [Scope of request for utility model registration] 1. A crawler belt pad attached to a tread surface of a tread board 1, an elastic member constituting a tread surface, a reinforcing member integrally fixed to the elastic member, and an end portion of the reinforcing member fixed to one end of the reinforcing member. A fixed hook member shaped to engage with the end of the shoe plate, and detachably fixed to the other end of the reinforcing member with a fastening member such as a bolt or a nut, and engaged with the end of the shoe plate; consists of a removable hook member which is in the shape, to the reinforcing member, the link mounting bolts projecting tread of the crawler plate constituting the crawler belt, Oite the running direction of the track, engagement portions to be engaged always in contact with A crawler pad comprising: 2. The crawler belt pad according to claim 1, wherein the reinforcing member is provided with a ridge locking portion that engages with the ridge of the crawler plate.