JP3514596B2 - Crawler components - 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 component, more specifically, an infinite traveling device such as a small construction machine or an agricultural machine such as a combine by connecting the components in the longitudinal direction of the belt. Is used as.

[0002]

2. Description of the Related Art As an endless traveling device, a so-called rubber crawler in which a metal core is embedded in an endless rubber crawler belt in the longitudinal direction of the belt is generally used. This rubber crawler is economically disadvantageous when a part of the crawler is chipped or the like and other parts are treated as scrap although they are sound. Therefore, there is an endless traveling device by connecting the crawler components in the longitudinal direction of the belt.There are so-called iron shoe type and elastic pad type as the crawler components, and the elastic pad type is used gently on the road surface. Since the noise and the vibration are small, it is in the limelight. For example, as disclosed in Japanese Patent Laid-Open No. 8-104262, the shoe plate and the link are fastened by bolts, and the fastened links are connected to each other. An endless track crawler belt connected by pins, wherein the crawler plate is an elastic crawler plate composed of a core body and an elastic body in which the core body is embedded and integrated, and the core body and the link are In between, arrange a metal plate fastened to the link with the bolt,
The endless track crawler track is characterized in that the metal plate and the core body are assembled by a mounting member.

[0003]

Although the technique disclosed in the above publication is useful as such, in a crawler component (elastic pad type) that constitutes an endless track, attachment of left and right links and a core metal (core) There is a problem that the strength is a little weak, so it is easy to cause rattling of the left and right links, breakage, etc., and the rattling at the connecting pin part becomes severe, which in turn causes a poor meshing with the sprocket wheel. There was a problem. Therefore, the present invention provides a crawler component that can firmly attach the left and right links and the core metal even though they have a simple structure and secure sufficient mounting strength, while maintaining the superiority of the elastic pad type. The purpose is to do.

[0004]

The present invention is based on the left-right link 2
A track link 4 having L, 2R and a core metal 3,
In the crawler component 1 in which the core metal 3 of the track link 4 is covered with the elastic pad 5, the following technical means are taken in order to achieve the above-mentioned object. That is, the crawler component 1 according to the present invention includes the left and right links 2L, 2
The fixing jig 10 is arranged over the left and right mud holes 9L and 9R through 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. the fixing jig 10 in a state of pressing the fixing jig 10 to the cored bar 3
The fastener 11 for fastening to the
And the position in the left-right direction with respect to the left-right link (2L) (2R)
The placement section (10L) (10R) is provided.
Positioning part is the edge of the left and right mud holes (9L) (9R)
Left and right recesses (10L) that fit in (9LA) and (9RA)
The crawler component 1 configured as described above is arranged side by side in the longitudinal direction of the belt, and the link bush 8 is interposed between the left and right links 2L and 2R. Elastic pad 5 by connecting by
It is considered to be an infinite traveling device (crawler track).

Then, the fixing jig 10 is attached to the mud holes 9L and 9L.
By being fastened to the core metal 3 with the fastener 11 while being pressed against the hole edges 9LA and 9RA of R, the left and right links 2L,
2R is firmly attached to the core metal 3, and if the left and right links 2L and 2R and the core metal 3 are integrally cast and made by casting, the joint portion of the two is pressed by the fixing jig 10. The attachment prevents the left and right links 2L and 2R from rattling. Here, since the fixing jig 10 is set using the mud removal holes 9L and 9R, the structure is simple, but a firm attachment is promised.

The mud holes 9L and 9R are for discharging mud, mud, gravel, snow, etc. adhering to the inner peripheral surface of the crawler. Since the fixing jig 10 is provided with the positioning portions 10L and 10R in the left-right direction with respect to the left and right links 2L and 2R, the positioning of the fastener 11 is accurate and the deviation in the width direction of the fixing jig 10 is ensured. To prevent it. Here, the positioning portion is provided with the left and right mud removal holes 9L and 9R.
Left and right recesses 10L, 1 that fit into the hole edges 9LA, 9RA of
By configuring with 0R, the left and right links 2L and 2R can be securely embraced, and the positioning portion is the convex portion 13 that is fitted between the left and right links 2L and 2R. , 2R is surely prevented from inward deformation.

Further, the fastener 11 has left and right links 2L and 2R.
The mud-draining holes 15 formed in the left and right links 2L and 2R are provided on the outer sides of the left and right links 2L and 2R, respectively. Together with this, clogging of mud, snow, etc. on the inner surface of the crawler is reduced, and therefore, large traction force can be obtained while suppressing energy consumption. Further, the fastener 11
Can also be provided between the left and right links 2L and 2R, thereby reducing the number of fasteners 11 and ensuring easy attachment and disassembly.

Of course, it is easy to replace the crawler component 1, and it is gentle on the road surface, and vibration and noise are more advantageous than the iron shoe type.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 (A), (B) and (C) show a first embodiment of a crawler component 1 according to the present invention, which comprises a track link 4 having left and right links 2L, 2R and a core metal 3, An elastic pad 5 is attached to the core metal 3 of the track link 4. Connection holes 6A and 6B are formed in front and rear of the left and right links 2L and 2R, and a track bush 7 is interposed between the connection holes 6A and 6A, and a crawler component is formed by a connection pin 8 inserted into the bush 7. An elastic pad type endless traveling device is configured by connecting 1 in the longitudinal direction of the belt, and the track bushing 8 serves as an engaging portion of a sprocket wheel or the like.

It is desirable that the left and right links 2L and 2R and the core metal 3 are integrally formed by casting using cast iron or the like, but the left and right links 2L and 2R and the core metal 3 are individually formed by casting or the like, and the two are welded or the like. You may join with. Also, left and right link 2
The L and 2R and the cored bar 3 may be separately formed as iron plates or steel plates and joined together by welding or the like, or the material may be made of reinforced plastic. The elastic pad 5 is made of an elastomer material such as rubber, urethane or resin, and is covered with the core metal 3. In the figure, the core metal 3
It has a rectangular block shape that is attached from the peripheral edge to the upper surface.

The adhesion means may be vulcanization adhesion or adhesive adhesion. The left and right links 2L and 2R are formed with mud holes 9L and 9R, respectively.
The fixing jig 10 is inserted through (utilized) through L and 9R, and the fixing jig 10 is attached to the left and right hole edges 9 of the mud removal holes 9L and 9R.
The fixing jig 10 is engaged over the LA and 9RA from above.
Are fastened to the core metal 3 by the fasteners 11 indicated by bolts, that is, the hole edges 9LA, 9RA, that is, the left and right links 2L, 2
R is pressed. In the embodiment of FIG. 1, the core metal 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 fastened at three positions between the left and right links and on the outer sides of the left and right links. It is tightened by the tool 11.

The fixing jig 10 may be made of hard resin and plastic containing a reinforcing material.
Of course, when a part or the whole of the elastic pad 5 is broken or worn, the fastener 11 can be loosened and the core metal 3 can be replaced. Further, the fasteners 11 may be provided side by side in front and back, as shown by a virtual line in FIG.
The fixing jig 10 can be attached to the core metal 3 by press fitting.

Further, the left and right hole edges 9LA, 9 of the fixing jig 10
The pressing portion against RA is a positioning portion in the left-right direction by forming recesses 10L and 10R in a shape that encloses the hole edges 9LA and 9RA. 2 to 7 show other configurations.
The crawler component 1 is shown , and the basic configuration, the material, and the like can be the same as those described above, and therefore the differences will be described below. In FIG. 2, the core metal 3 is formed into a flat trapezoidal shape,
The recesses 12 are formed on the left and right upper surfaces of the core metal 3, the left and right links are fitted to the recesses 12, and the fixing jig 10 is a flat strip plate, which is structurally simple.

In FIG. 3, a recess 12 is formed in the center of the flat trapezoidal cored bar 3 in the left-right direction, and the left and right links 9L, 9R are fitted into the recess 12, and the projection 13 is fitted between the left and right links 9L, 9R. Is formed on the fixing jig 10 and is fastened by the fastener 11 at the center (between the left and right links), and FIG. 4 shows the head 11A of the fastener 11 immersed in the convex portion 13 of the fixing jig 10. Therefore, in any of FIG. 3 and FIG.
The convex portion 13 serves as a lateral positioning portion. Figure 5
The left and right wing portions of the core metal 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 and 2R to form a left and right positioning portion. , The convex portion 13 formed in the central portion of the fixing jig 10 is fitted between the left and right links 2L and 2R, and the concave portions 13A formed on both sides of the convex portion 13 are fitted into the left and right links 2L and 2R and arranged in the center. Is fastened to the core metal 3 with the fastener 11
Further, the elastic material of the elastic pad 5 is filled in the holes 3D penetrating the right and left wings of the core metal 3 in the thickness direction.

When tightening with the fastener 11, the elastic material 5E covering the upper surface of the cored bar 3 is elastically fixed to the jig 1.
By compressing at 0, the elastic restoring force of the material 5E can also prevent the fastener 11 from loosening. The elastic pad 5 is attached to the left and right wing portions of the core metal 3 so as to be laterally distributed. 6 and 7 show the fastener 11 with the left and right links 2.
The fixing jig 10 is provided by being screwed from below through recesses 14 formed in the elastic pad 5 arranged on the outer sides of L and 2R.
Is pressed downward, and the fastener 11 is a so-called pull bolt type.

Of course, it may be pushed in and screwed in from the upper surface of the fixing tool 10, but in any case, the mud draining penetrating in the thickness direction across the fixing jig 10 and the core metal 3 between the left and right links 2L, 2R. The hole 15 is formed. Further, as shown in FIG. 7, a concave-convex engaging portion 16 is formed at a connecting portion between the left and right links 2L and 2R and the core metal 3 so that they are integrated by welding or the like in a state of being positioned forward and backward (the crawler longitudinal direction). Has been done. 8 to 11 show an endless rubber track 100.
1 shows a rubber crawler 103 in which a cored bar 102 having a protrusion 101 in its longitudinal direction is vulcanized and bonded and embedded.
In this crawler 103, usually, a tensile body made of steel cord is provided around the lower surface of the cored bar 102 in the longitudinal direction of the band to regulate the extension of the crawler 103.

FIGS. 8 to 11 show a chain tensile member 104 employed in place of the steel cord tensile member. Here, the chain tension member 104 may be a chain plate connected by pins or a chain in which rings are connected endlessly, but in FIG. 8, a recess 105 is formed on the lower surface of the cored bar 102 on the right side thereof. However, the tension member 104 is installed in the recess 105 under the interposition of a rubber material, and the recess 105 prevents lateral displacement of the tension member 104. In the left side of FIG. Pipe 1
Reference numeral 06 shows a case in which the tensile body 104 is inserted and the lateral displacement is prevented by the pipe 106.

In FIG. 9, the tensile body 104 and the steel cord tensile body 107 on the right side of the structure shown on the right side of FIG. 8 are shown.
Shows a combination of the two, and on the left side thereof, the core metal 102
The tensile body 104 is engaged with the end portion of the base material in the longitudinal direction thereof, is fitted, and is vulcanized and bonded.
As the chain plate 104A shown in FIG. 10, a recess 104B may be formed, or as shown in FIG. 11, a window 104C may be formed.

[0019]

As described in detail above, according to the present invention, it is possible to provide an elastic pad type crawler component in which the attachment strength between the left and right links and the core is sufficiently secured, and the left and right links are prevented from being deformed. The result is less rattling, and the engagement with the sprocket wheel is secure.

[Brief description of drawings]

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

FIG. 2 is a front view showing a crawler component having another configuration .

FIG. 3 is a front view showing a crawler component having another configuration .

FIG. 4 is a front view showing a crawler component having another configuration .

FIG. 5 is a front view showing a crawler component having another configuration .

FIG. 6 is a front view showing a crawler component having another configuration .

FIG. 7 is a side view of FIG.

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

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

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

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

[Explanation of symbols]

1 Crawler components 2L, 2R left and right links 3 core 5 elastic pad 9L, 9R mud hole 10 Fixing jig 11 fasteners

Claims (2)

(57) [Claims] 1. Left and right links (2L) (2R) and core metal
A track link (4) having (3) and
Attach the elastic pad (5) to the core bar (3) of the link (4).
In the worn crawler component (1), the mud removal formed on the left and right links (2L) (2R)
Left and right the fixing jig (10) through the holes (9L) (9R)
Installed over the mud removal holes (9L) (9R) of
Edge of mud hole (9L) (9R) (9LA) (9RA)
With the fixing jig (10) pressed against the fixing jig (1
A fastener (11) for fastening 0) to the core metal (3)
And the left and right links (2L) to the fixing jig (10).
Positioning part (10L) in the left-right direction with respect to (2R) (1
0R) is provided, and this positioning part
For hole edge (9LA) (9RA) of punched hole (9L) (9R)
A crawler component, which is a left and right recess (10L) (10R) to be fitted . 2. Left and right links (2L) (2R) and core metal
A track link (4) having (3) and
Attach the elastic pad (5) to the core bar (3) of the link (4).
In the worn crawler component (1), the mud removal formed on the left and right links (2L) (2R)
Left and right the fixing jig (10) through the holes (9L) (9R)
Installed over the mud removal holes (9L) (9R) of
Edge of mud hole (9L) (9R) (9LA) (9RA)
With the fixing jig (10) pressed against the fixing jig (1
A fastener (11) for fastening 0) to the core metal (3)
This fastener (11) is attached to the left and right links (2L) (2
R) is provided on each outer side, and left and right links (2L) (2
Remove mud from the fixing jig (10) between R) and the core metal (3)
Features and to torque the roller components that hole (15) is disposed through.