JPH04133878A - Rubber crawler belt for crawler vehicle - Google Patents

Abstract

PURPOSE:To facilitate mounting of a crawler belt by forming a rubber crawler unto a beltlike connection and fixedly securing shaft supports on both ends, journaling connecting metal fittings composed of split type members having mutually engaging teeth on respective shaft supports, and engaging these teeth together and tightening them with bolts. CONSTITUTION:Shaft supports 20 having forked bosses 22 with drilled shaft holes 21 are welded to core metals 12 on both ends of one connection of rubber crawler belt 10, and a split type member 31 having a tooth 33 with a shaft 23 is journaled between the forked bosses 22 of the shaft support 20. The other split type member 35 constituting connecting metal fittings 30 together with the split type member 31 is welded to the core metal 12, vulcanized and molded in one body with a lug 41 out of rubber, to constitute a connecting crawler plate 40. The teeth 33, 36 of the split type members 31, 35 are engaged with each other, the members 31, 35 are tightened with bolts 38, and hence the crawler belt is connected in a ringlike shape.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rubber track for a tracked vehicle, and particularly to a rubber track suitable for construction machines such as bulldozers and hydraulic excavators that require traction force.

[Conventional technology]

Conventionally, in tracked vehicles such as bulldozers, a plurality of upper and lower rollers are provided above and below a seven-track frame provided between a guide wheel and a starting wheel, respectively, and a crawler track is attached to each of these rollers. Vehicles are now driven by the power that is wrapped around them and transmitted to the starting wheels, but in recent years, integrated rubber tracks have been used instead of iron shoes to prevent vibration and noise.

Figure 1 is a front view of the running device of a tracked vehicle equipped with rubber tracks, where 1 is a guide wheel, 2 is a starting wheel, 3 is a track frame, 4 is an upper roller, 5 is a lower roller, and jO is a It is a rubber crawler track, and 11 is a lug. FIG. 8 is a perspective view of a conventional rubber track 50, which is integrally molded into an annular shape. FIG. 9 is a cross-sectional view taken along line S-5 in FIG. A plurality of wires 15 are provided as strength members. Rubber 16 is attached to the core bar 12 and the wire 15.
are integrally vulcanized and molded to form the rubber crawler track 50.

The wire 15 is embedded in a ring shape inside the rubber track 50.

Therefore, vibration and noise during running are extremely low due to the cushioning and sound absorbing effects of the rubber.

[Problem to be solved by the invention]

However, according to the above structure, since the rubber crawler track is of an annular integral skin type, there are the following problems.

(1) When attaching or detaching the track, it is necessary to move the guide wheel toward the starting wheel as shown by dotted line A in FIG. The amount of movement required is greater than when attaching and detaching the crawler tracks made of steel, and therefore a hydraulic cylinder for the guide wheel dedicated to the rubber crawler track is required. In addition, if the rubber tracks are suspended by a crane during installation, an assembly jig will be required to hold the rubber tracks in the shape they were installed in, and special parts for the vehicle body and assembly will be required, making it difficult to assemble. It requires a large amount of man-hours.

(2) When transporting rubber tracks, it takes a lot of space, transportation costs are high, and a lot of storage space is required.

(3) If rubber tracks with different ground contact lengths as shown in Figure 1 are required, new rubber tracks must be manufactured.
It is uneconomical.

(4) During work, the rubber track may be accidentally run over sharp rocks or steel shapes, and the rubber track, along with the strength member wires, may be severed. In such cases, the entire rubber track must be replaced. However, it is uneconomical.

The present invention has been made in view of the above-mentioned problems, and is a rubber for tracked vehicles that is easy to attach and detach, is less inconvenient during transportation or stonking, and allows for economical track length changes and repairs. The purpose is to provide tracks.

[Means to solve the problem]

In order to achieve the above two objects, in the first invention of the rubber crawler track for a tracked vehicle according to the present invention, the rubber tracks are arranged in parallel in the belt-like direction at equal intervals, and the meshing engagement portion of the driving wheel and the rolling wheel In a rubber crawler for a tracked vehicle in which a core metal having a rolling rail surface and a wire serving as a strength member in a belt-like direction are embedded, the rubber crawler is a belt-shaped ream, protrudes from both ends of the ream, and the core The invention is characterized by comprising a shaft support fixed to gold and a connecting metal fitting pivoted to the shaft support, and in the second invention, the connecting metal fittings are respectively pivotally connected to the shaft support and interlock with each other. In the third aspect of the present invention, the axial center of the shaft support is substantially at the center of the shaft support. It is characterized by being located on the center line of the wire.

[Effect]

According to the above configuration, the rubber crawler belt is formed into a belt-like series, a shaft support is fixed to both ends of the series, and a split member fastened with a bolt is provided which is pivotally attached to the shaft support. Therefore, when installing rubber tracks on a vehicle body, a belt-shaped track with a split member attached to the shaft supports at both ends is wrapped around each rolling wheel in the same way as conventional iron shoe tracks are installed, and then the split member The tracks can be connected in an annular manner by engaging the teeth of the track and tightening it with bolts. Since the tension acting on the track is received by the occlusal teeth, no shearing force is applied to the bolt. Also,
Since the center of the axis of the shaft support is placed on the center line of the wire, the rubber crawler track meshes with the starting wheel properly and can be bent easily.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of rubber tracks for tracked vehicles according to the present invention will be described in detail below with reference to the drawings.

FIG. 2 is an overall perspective view of the first embodiment of the rubber crawler according to the present invention, in which 10 is a series of rubber crawlers, 20 is a shaft support, 30 is a connecting metal fitting, and 40 is a connecting track plate.

3 is a front view of the connecting portion, FIG. 4 is a perspective view of the connecting portion, and FIG. 5 is a configuration diagram of the connecting portion. The cross-sectional configuration of the belt-shaped rubber crawler track is the same as the conventional cross-sectional configuration shown in FIG. 9, so a description thereof will be omitted. The core metals 12 at both ends of the 1 series of rubber crawler tracks 1O are
A shaft support 2 having a bifurcated post 22 with a shaft hole 21 bored therein.
0 is welded. The width of the split member 31°35 in which the shaft hole 32 is bored is such that it can be inserted between the two forked posts 22 of the shaft support 20. The split member 31 has teeth 3
3 is provided, and a plurality of port holes 34 for port [38] are drilled. The split member 35 is provided with teeth 36 that engage with the teeth 33 described above.
7 is drilled. The split members 31 and 35 constitute a connecting fitting 30. The split mold member 35 is the core metal 12
The connecting track board 40 is welded to the lug 41 and vulcanized and molded integrally with the lug 41 using rubber. Reference numeral 23 denotes a shaft that is fitted into the shaft hole 2i32 and pivots the split mold member 3i35 to the shaft support 20.

To attach the rubber track to the vehicle body, insert the split members 31 and 35 between the posts 22 of the shaft support 20, and insert the shaft 23 into the shaft hole 21,
32, the split mold members 31 and 35 are pivoted to the shaft support 20, and the shaft 23 is fixed to the post 22 by the port 24.

Next, the belt-shaped rubber crawler track 10 is wrapped around each rolling shaft in the same way as the crawler belt of the iron shiko, and the teeth 33 and 36 of the split mold member 31 and 35 are engaged, and the split mold member 3 is attached by the port 38.
1 and 35 are tightened to connect the belt-shaped crawler belts in a circular manner.

The bending of the connecting part during travel takes place around the axis 23.

As shown in FIG. 3, the center of the shaft hole 21 is located on the center line C--C of the wire. When the rubber track bends, the wire does not expand or contract in the longitudinal direction, so the bending is done with the center of the wire as a reference.

Therefore, by arranging the center of the bending axis on the center line of the wire, the rubber track can be bent smoothly without disturbing the relative positions of the meshing engagement parts.

FIG. 6 is a perspective view showing a second embodiment of the rubber crawler track of the present invention, and the number of rows can be set to three and connected in an annular shape at three points x, y, and z, or the number of rows can be arbitrarily determined. You can choose. Therefore, even if the wires and track are cut, only that part can be replaced. Further, if crawlers having different ground contact lengths as shown in FIG. 1 are required, the desired rubber crawler can be constructed by increasing or decreasing the number of rubber crawler tracks having the required length.

FIG. 7 shows a third embodiment of the rubber track of the present invention.
A shaft support 20 is fixed to a core metal 12 by a port 25.

〔Effect of the invention〕

As described in detail above, the present invention consists of making a rubber crawler track into a belt-like series, fixing a shaft support at both ends, and pivoting a connecting fitting made of a split member having teeth that interlock with each other to the shaft support, so that the teeth interlock with each other. Since the split members are fastened by the port and the crawler belts are connected in an annular manner, the following effects are achieved.

(1) When attaching and detaching the H band, it can be attached and detached by the same operation as the iron shoe crawler track, so there is no need to move the guide wheel extra to the starting wheel side, and therefore a dedicated hydraulic cylinder is not required. Further, no assembly jig is required, and the number of assembly steps can be reduced.

(2) It has little habit of handling and is economical in transportation and stonking.

(3) According to the second embodiment, when rubber tracks with different ground contact lengths are required, the required rubber tracks can be configured by increasing or decreasing the number of rubber tracks of the required length,
Economical.

(4) If the rubber track breaks, it can be partially replaced, which is economical.

(5) Since the center of the connecting shaft is placed on the center line of the wire, smooth movement is possible when the crawler track is bent.

(6) Since the tension acting on the ff band is received by the teeth of the split member, no cutting force is applied to the port, ensuring sufficient strength.

[Brief explanation of drawings]

Fig. 1 is a front view of the traveling device of a tracked vehicle, Fig. 2 is an overall perspective view of the first embodiment of the rubber crawler track of the present invention, Fig. 3 is a front view of the coupling part, and Fig. 4 is a front view of the coupling part. A perspective view, FIG. 5 is a configuration diagram of a connecting portion, FIG. 6 is an overall perspective view of a second embodiment of the rubber track of the present invention, FIG. 7 is a perspective view of a connecting portion of a third embodiment, and FIG. 8 9 is an overall perspective view of a conventional rubber crawler track, and FIG. 9 is an S- in FIG.
5 is a sectional view. 10...Rubber track 12...Core 15...Wire 20...Shaft support 23...Shaft
30...Connection fittings 3i35...Split type member 33.36...Teeth 24.38...Bolt/connection track plate

Claims (1)

[Scope of Claims] (1) A core metal having a meshing engagement portion of a driving wheel and a rolling rail surface of a rolling wheel, which are arranged parallel to each other at equal intervals in a strip direction, and a wire serving as a strength member in a strip direction. In a rubber crawler track for a tracked vehicle in which a tracked vehicle is embedded, the rubber crawler track is a belt-shaped chain, and includes a shaft support that protrudes from both ends of the chain and is fixed to the core metal, and a connecting fitting that is pivoted to the shaft support. A rubber crawler track for a tracked vehicle that is characterized by the ability to (2) The connecting fittings are characterized by being comprised of two split members that are each pivoted on the shaft support, have teeth that engage with each other to receive the tension acting on the crawler track, and are fastened with bolts. A rubber track for a tracked vehicle according to claim (1). (3) The rubber track for a tracked vehicle according to claim (1), wherein the axial center of the shaft support is substantially on the center line of the wire.