JPH10157662A - Crawler constituting part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elastic pad type crawler constituting part to ensure the mounting strength of right and left links and a core. SOLUTION: A crawler constituting part 1 is formed such that a track link 4 is provided with right and left links 2L and 2R and a core 3 and the core 3 of the track link 4 is covered with an elastic pad 5. A fixing jig 10 is disposed spanning between mud removing holes 9L and 9R through the mud removing holes 9L and 9R formed in the left and right links 2L and 2R. In a state that the fixing tool 10 is pressed against the hole edges 9LA and 9RA of the left and right mud removing holes 9L and 9R, a fastening tool 11 is provided to fasten the fixing jig 10 against the core 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crawler component, and more particularly, to an infinite traveling device such as an agricultural machine such as a small construction machine or a combine by connecting the component in the longitudinal direction of the belt. It is used as

[0002]

2. Description of the Related Art As an endless traveling device, a so-called rubber crawler in which a core metal is buried in an endless rubber crawler belt in a longitudinal direction of the belt has been generally used. If a part of the crawler is chipped or the like, the rubber crawler is treated as a waste product in spite of the fact that the other part is sound, which is economically disadvantageous.

[0003] Therefore, there is an endless traveling device in which crawler components are connected in the longitudinal direction of the belt, and there are so-called iron-shoulders and elastic pad types as the crawler components. Since it is used gently and has little noise and vibration, it is in the spotlight. For example, as disclosed in JP-A-8-104262, a shoe plate and a link are fastened with bolts, and Endless track crawler belt formed by connecting the links of the above with a pin, wherein the crawler plate is an elastic crawler plate comprising a core body and an elastic body in which the core body is embedded and integrated. Between the link and the link, a metal plate that is fastened to the link with the bolt is disposed, and the metal plate and the core are assembled with an attachment member, thereby providing a crawler track. .

[0004]

Although the technique disclosed in the above-mentioned publication is useful as it is, the crawler component (elastic pad type) constituting the endless track belt is attached to the left and right links and the core metal (core body). There is a problem that the strength is a little weak, so that the left and right links are likely to rattle, break, etc., and the rattling at the connecting pin portion becomes severe, which in turn causes poor engagement with the sprocket wheel. There was a problem that.

Accordingly, the present invention provides a crawler structure in which the left and right links and the core are simple in structure but can be firmly attached to ensure sufficient mounting strength while maintaining the superiority of the elastic pad type. The purpose is to provide parts.

[0006]

According to the present invention, a left and right link 2 is provided.
A track link 4 having L, 2R and a metal core 3;
In the crawler component 1 in which the elastic pad 5 is attached to the metal core 3 of the track link 4, the following technical measures are taken in order to achieve the above object. That is, the crawler component 1 according to the present invention includes the left and right links 2L, 2L.
The fixing jig 10 is disposed over the left and right mud holes 9L and 9R via the mud holes 9L and 9R formed in the R, and the hole edges 9LA and 9RA of the left and right mud holes 9L and 9R. In a state where the fixing jig 10 is pressed against the
And a crawler component 1 configured as described above.
The endless running device (crawler belt) having the elastic pads 5 is provided by connecting the left and right links 2L, 2R with the connecting pins 8 with the track bushing 7 interposed therebetween in the longitudinal direction of the belt.

Then, the fixing jig 10 is inserted into the mud holes 9L, 9L.
The right and left links 2L, 2L, 3R are fastened to the metal core 3 by the fasteners 11 while being pressed against the hole edges 9LA, 9RA of the R.
The 2R is firmly attached to the metal core 3. If the left and right links 2L, 2R and the metal core 3 are integrally formed as a casting, the joint between the two 2 and 3 is pressed by the fixing jig 10. The attachment prevents the right and left links 2L and 2R from rattling.

Here, since the fixing jig 10 is set by using the mud holes 9L and 9R, it is promised that the structure is simple but strong. In addition, the mud removal hole 9L,
9R means muddy soil, muddy water, gravel,
It emits snow and the like. The fixing jig 10 includes a left-right positioning portion 10 for the left and right links 2L and 2R.
With the provision of the L and 10R, the positioning of the fastener 11 becomes accurate, and the displacement of the fixing jig 10 in the width direction is reliably prevented.

[0009] Here, the positioning portion is provided with left and right mud holes 9.
Left and right recesses 1 to be fitted in hole edges 9LA, 9RA of L, 9R
0L, 10R, left and right links 2L, 2R
And the positioning portion is the convex portion 13 fitted between the left and right links 2L and 2R, so that the inward deformation of the left and right links 2L and 2R is reliably prevented. is there.

Further, the fastener 11 is provided with the left and right links 2L, 2R.
The fixing jig 10 between the left and right links 2L and 2R and the core bar 3 are provided with mud holes 15 through the mud holes 15 formed in the left and right links 2L and 2R. In conjunction with this, clogging of mud, snow and the like on the inner peripheral surface of the crawler is reduced, so that a large traction force can be obtained while suppressing energy consumption.

Further, the fastener 11 is provided with the left and right links 2L, 2R.
An interposed arrangement can also be provided, which reduces the number of fasteners 11 and ensures easy installation and disassembly. Of course, the replacement of the crawler component 1 is easy, the vibration is gentle on the road surface, and the noise is more advantageous than the iron shoe type.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1A, 1B, and 1C show a first embodiment of a crawler component 1 according to the present invention, which includes a track link 4 having left and right links 2L and 2R and a cored bar 3. An elastic pad 5 is attached to the core metal 3 of the track link 4.

Connecting holes 6 are provided before and after the left and right links 2L, 2R.
A and 6B are formed, and a track bush 7 is interposed between the connection holes 6A and 6A, and the crawler component 1 is connected in the longitudinal direction of the band by a connection pin 8 inserted into the bush 7 to provide elasticity. The pad-shaped endless traveling device is configured, and the track bush 8 is an engaging portion such as a sprocket wheel.

It is desirable that the left and right links 2L, 2R and the core 3 are integrally formed by casting with cast iron or the like. However, the left and right links 2L, 2R and the core 3 are individually formed by casting or the like, and the two are welded or the like. May be joined. In addition, left and right link 2
The L and 2R and the metal core 3 can be separately formed as an iron plate or a steel plate, and both can be joined by welding or the like, or the material can be made of a reinforced plastic.

The elastic pad 5 is made of an elastomeric material such as rubber, urethane, resin or the like, and has the core 3 attached thereto. In the drawing, a rectangular block shape is attached from the periphery to the upper surface of the core 3. It has been. The applying means may be vulcanized application or an adhesive application. Mud holes 9L, 9R are formed in the left and right links 2L, 2R, and the fixing jig 10 is inserted (utilized) through the mud holes 9L, 9R, and the fixing jig 10 is removed. Hole 9L,
The left and right holes 9LA and 9RA, that is, the right and left links 2L and 2R are pressed by engaging the fixing jig 10 from above with the right and left hole edges 9LA and 9RA of the 9R and fastening the fixing jig 10 to the cored bar 3 by fasteners 11 indicated by bolts. I have.

In the embodiment shown in FIG. 1, the cored bar 3 is made of a rectangular flat plate, and a thick fixing jig 10 made of a casting, a metal cutting material, or the like is attached between the left and right links and the outer sides of the left and right links. It is fastened by fasteners 11 at several places. Note that the fixing jig 10 can also be made of a hard resin and a plastic containing a reinforcing material.

Of course, when a part or the whole of the elastic pad 5 is damaged or worn, the fastener 11 can be loosened and the whole core bar 3 can be replaced. Further, as shown by the imaginary line in FIG. 1 (A), the fasteners 11 may be provided side by side in the front-rear direction.
It can also be attached to

The right and left hole edges 9LA, 9LA of the fixing jig 10 are also provided.
The pressing portion against RA is formed as concave portions 10L and 10R that embrace the hole edges 9LA and 9RA, and serves as a positioning portion in the left-right direction. FIGS. 2 to 7 show another useful embodiment of the present invention. Since the basic configuration, the material, and the like can be the same as those described above, the differences will be described below.

FIG. 2 shows that the metal core 3 is formed in a flat trapezoidal shape, a concave portion 12 is formed on the left and right upper surfaces of the metal core 3, and the right and left links are fitted into the concave portion 12, and the fixing jig 10 is a flat band plate. It is said to be structurally simple. FIG.
Is formed with a concave portion 12 at the center in the left-right direction of the flat trapezoidal cored bar 3. At the center (between the left and right links)
FIG. 4 shows a state in which the head 11A of the fastener 11 is immersed in the convex portion 13 of the fixing jig 10, and in each of FIGS. The positioning part of.

FIG. 5 shows that the left and right wing portions of the cored bar 3 are formed such that the upper surface is a horizontal surface and the lower surface is an upwardly inclined surface, and a convex portion 12A is formed on the central upper surface to be fitted between the left and right links 2L, 2R. The protrusion 13 formed at the center of the fixing jig 10 is fitted between the left and right links 2L and 2R, and the recesses 13A formed on both sides of the protrusion 13 are formed as left and right links 2L and 2L.
2R, is fastened to the metal core 3 with the fastener 11 arranged at the center, and furthermore, the left and right wing portions of the metal core 3 are filled with the elastomer material of the elastic pad 5 in the holes 3D penetrating in the thickness direction. doing.

When fastening with the fastener 11, the elastomer material 5E covering the upper surface of the cored bar 3 is elastically fixed to the fixing jig 1.
By compressing at zero, the fastener 11 can also have a loosening-preventing action with the elastic restoring force of the material 5E. The elastic pads 5 are attached to the left and right wings of the cored bar 3 in a right and left manner. FIG. 6 and FIG.
The fixing jig 10 is screwed in from below through a recess 14 formed in the elastic pad 5 and disposed on the outside of each of the L and 2R.
Is pressed downward, and the fastener 11 is a so-called pull bolt type.

Of course, the screw may be pushed in from the upper surface of the fixing tool 10, but in any case, the mud piercing through the fixing jig 10 and the core 3 in the thickness direction between the left and right links 2L, 2R. A hole 15 is formed. Also, at the joint between the left and right links 2L, 2R and the metal core 3, as shown in FIG. 7, an uneven engagement portion 16 is formed, so that the front and rear (crawler longitudinal direction) are positioned and integrated by welding or the like. Have been.

FIGS. 8 to 11 show an endless rubber crawler belt 10.
0 shows a rubber crawler 103 in which a metal core 102 having a protrusion 101 in its longitudinal direction is vulcanized and bonded and embedded, and the crawler 103 usually includes a tensile member made of a steel cord. Is provided on the lower surface of the crawler 103 in the longitudinal direction of the belt to restrict the extension of the crawler 103. 8 to 11
Shows a case in which a chain tensile member 104 is used instead of a tensile member made of steel cord.

Here, the chain tensile member 104 may be a chain in which a chain plate is connected with pins or a chain in which rings are connected endlessly. In FIG. 105, the tensile member 104 is installed in the concave portion 105 with a rubber material interposed,
FIG. 8 shows that the tensile member 104 is prevented from laterally displacing by the concave portion 105. On the left side of FIG. 8, the flexible member 106 is inserted through the tensile member 104 to prevent lateral displacement by the pipe 106. Is shown.

In FIG. 9, the tensile member 104 and the steel cord tensile member 107 having the structure shown on the right side of FIG.
Are shown, and a metal core 102 is shown on the left side thereof.
A tensile member 104 is engaged with the end of the member in the longitudinal direction and fitted and vulcanized and adhered.
As an example, a structure in which a recess 104B is formed in the chain plate 104A shown in FIG. 10 or a structure in which a window 104C is formed as shown in FIG. 11 may be used.

[0026]

As described above in detail, according to the present invention, it is possible to provide an elastic pad type crawler component part which can sufficiently secure the mounting strength between the left and right links and the core metal, and prevent deformation of the left and right links and the like. As a result, there was little backlash and the engagement with the sprocket wheel was assured.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention, wherein (A) is a plan view, (B) is a front view, and (C) is a side view.

FIG. 2 is a front view showing a second embodiment of the present invention.

FIG. 3 is a front view showing a third embodiment of the present invention.

FIG. 4 is a front view showing a fourth embodiment of the present invention.

FIG. 5 is a front view showing a fifth embodiment of the present invention.

FIG. 6 is a front view showing a sixth embodiment of the present invention.

FIG. 7 is a side view of FIG. 6;

FIG. 8 is a front view showing another rubber track.

FIG. 9 is a front view showing another rubber track.

FIG. 10 is a side view of the tensile body used in FIGS. 8 and 9;

FIG. 11 is a side view of the tensile body used in FIGS. 8 and 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Crawler component part 2L, 2R Left and right link 3 Core metal 5 Elastic pad 9L, 9R Mud hole 10 Fixing jig 11 Fastener

Claims (6)

[Claims] 1. A track link (4) having left and right links (2L) (2R) and a core bar (3), and an elastic pad (5) is provided on the core bar (3) of the track link (4). In the crawler component (1), the fixing jig (10) is connected to the left and right mud holes (9L) via the mud holes (9L) and (9R) formed in the left and right links (2L) and (2R). ) (9R), and the edge (9LA) (9RA) of the left and right mud holes (9L) and (9R).
With the fixing jig (10) pressed against the fixing jig (1),
A crawler component, comprising: a fastener (11) for fastening the core metal (0) to the core metal (3). The left and right links (2) are attached to the fixing jig (10).
L) Left / right positioning part (10L) with respect to (2R)
(10R) is provided.
Crawler components as described. 3. The positioning portion has left and right mud holes (9L).
The crawler component according to claim 2, wherein the left and right recesses (10L) and (10R) are fitted into the hole edges (9LA) and (9RA) of the (9R). 4. The positioning portion includes left and right links (2L).
The crawler component according to claim 2, characterized in that the crawler component (13) is a projection (13) fitted between the (2R). 5. A left and right link (2L) for a fastener (11).
Left and right links (2L) provided on each outer side of (2R)
Crawler component according to claim 1, characterized in that the fixing jig (10) and the metal core (3) between (2R) are provided with mud holes (15). 6. The right and left link (2L) of the fastener (11).
(2R) is provided between.
Crawler components as described.