JP2561517Y2 - Rubber track - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber crawler improved so as to be able to favorably run up and down stairs.

[0002]

2. Description of the Related Art There is known a rubber crawler of a crawler traveling apparatus in which a spike is cast on a flat end portion of each lug of an endless belt (for example, Japanese Utility Model Application Laid-Open No. 56-172).
No. 485, see Microfilm). In addition, in order to prevent slippage when going up and down stairs, there is known a configuration in which small lug groups for slip prevention are formed between lugs (for example,
JP-A-60-110566).

[0003]

In the former technique described in the prior art, in the former, a spike different from the cored bar is implanted in a spike hole formed in a rubber lug in a plane perpendicular to the flat surface. Therefore, when going up and down stairs, the direction of the spikes is greatly affected by the elastic deformation of the rubber lugs, and the spikes may not function properly, and the external force received by the spikes may be affected by the spikes of the rubber lugs. Repeated local loading of the part has the disadvantage that the part is liable to be damaged early or spikes fall off, resulting in poor durability.

In the latter, a small rubber lug is formed between lugs formed at a predetermined pitch on the outer periphery of a rubber crawler by making the lug lower and narrower than the lugs. Since it was a spike-less type to be installed, there was a drawback that slip prevention at the time of going up and down stairs was lower than that having a spike.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks in the prior art, and has excellent durability while being provided with a spike which functions to prevent slipping when traveling up and down stairs. A rubber crawler is provided. That is, the rubber crawler of the present invention is configured such that a spike is integrally formed on a core bar embedded in the endless band, and the spike is formed in a valley portion between lugs adjacent to each other from the front and rear inclined surfaces of the lugs of the endless band. It is characterized by being protruded toward.

[0006]

In the rubber crawler of the present invention, a spike projecting from the front and rear inclined surfaces of the lugs toward the valley between the adjacent lugs always forms at the step corner of the stairs when the stairs are climbed up and down. Since they are involved, the anti-slip function is reliably performed. Since the spikes are formed integrally with the metal core embedded in the endless strip, the spikes do not fall off and the endless strips, especially the lugs, are not damaged early, and the durability is excellent.

[0007]

Embodiments will be described with reference to the drawings.
1 to 3, (1) is an endless band-shaped body formed of rubber or the like, and has a core metal (5) long in the width direction inside thereof.
Are buried at predetermined intervals in the longitudinal direction (the direction of rotation of the endless belt-shaped body), and holes (6) in which the projections of the drive wheels engage in portions between the adjacent metal cores (5) (5).・ Has been established.
Further, each core metal (5) is integrally formed with projections (7) (7) protruding from the inner surface side of the endless band-shaped body (1), and all the core metals (5). Surrounded by a buried reinforcing cord (8).

Further, lugs (2) are formed integrally with the endless strip at a portion corresponding to the core metal (5) on the outer peripheral surface side of the endless strip. Each rug (2)
Has a trapezoidal cross section as seen in FIG. Spikes (4) projecting toward the valleys of the adjacent lugs (2) and (2) are provided on the front and rear inclined surfaces (3) and (3) of each lug (2).
The spikes (4) on each slope (3) are endless strips (1)
Are scattered in the width direction.

Each of the spikes (4) is provided integrally with each of the metal cores (5) and protrudes from the front and rear inclined surfaces (3) and (3) of the lug (2) in a direction perpendicular to the inclined surfaces. In a normal state where at least the lug (3) is not elastically deformed, the lug (3) is formed to have a length that does not protrude outward from the flat end portion (9) of the lug. The lug (2) formed on the endless strip (1) has a straight pattern as shown in FIG.
Any other pattern may be used.

FIGS. 4 to 6 show a carrier equipped with a crawler traveling device using a rubber crawler according to the present invention. The body of the carrier has a traveling transmission (11) and a substantially triangular frame (12) in a side view. It is assembled and assembled. Further, the crawler traveling device is configured such that a rubber crawler (1) is wound around an idler wheel (14) supported on both front and rear ends of a track frame (13) and a drive wheel (15).
2) is fitted and connected to the axle (16) of the traveling mission (11).

The vehicle body can swing in a seesaw shape about the axle (16) with respect to the crawler traveling device. Normally, the track frame and the vehicle body are prevented from swinging. And a locking mechanism (17) interposed therebetween. The latching mechanism (17) is configured as a telescopic mechanism,
By adjusting the expansion and contraction, the inclination angle of the vehicle body with respect to the crawler traveling device can be arbitrarily adjusted.

Although not shown, the loading platform (18) detachably mounted on the upper surface of the vehicle body may be equipped so as to be tiltable with the front part as a fulcrum or with the rear part as a fulcrum. In some cases, it is provided so as to be movable in the front-rear direction with respect to the vehicle body. The transport vehicle configured as described above travels up and down stairs in a posture as shown in FIGS. 5 and 6.

[Brief description of the drawings]

FIG. 1 is a partial view of a rubber track according to the present invention as viewed from an outer peripheral surface side.

FIG. 2 is a cross-sectional view taken along line AA of FIG.

FIG. 3 is a cross-sectional view taken along line BB of FIG.

FIG. 4 is a side view of the carrier equipped with the crawler traveling device using the rubber track according to the present invention;

FIG. 5 is an explanatory diagram showing a stair climbing traveling state of the transport vehicle.

FIG. 6 is an explanatory diagram showing a traveling state of the carrier vehicle going down the stairs.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Endless belt-shaped body 2 Lug 3 Front and rear inclined surface 4 Spike 5 Core

Claims (1)

(57) [Scope of request for utility model registration] 1. A metal core (5) embedded in an endless strip (1).
A spike (4) is formed integrally with the endless band-like body (1), and the spike (4) is inclined forward and backward of the lug (2) of the endless band-like body (1).
A rubber crawler protruding from (3) toward a valley between adjacent lugs.