Four-drive traveller of development machine

Abstract

The invention relates to a four-drive running mechanism for a development machine, which is composed of two groups of track systems. Each group of track system mainly includes a track, a drive wheel, two guiding drive wheels and a wheel support saddle thereof, a tightener, a running bracket, drive power sources and a decelerator. The running mechanism is provided with four drive power sources to simultaneously drive the two guiding drive wheels and two back drive wheels to provide ultra-strong driving force for the development machine and simultaneously reduce the height of the gravity center of a chassis of the development machine, greatly improve the braking capacity and response speed of a running part and prolong the service life of the track.

Description

technical field [0001] The invention relates to a four-drive traveling mechanism of a roadheader, which provides a super-strong driving force for the roadheader and belongs to mining machinery. Background technique [0002] The walking part of the prior art roadheader is all in the form of two drives. There are driving power sources behind the two groups of walking crawlers, which drive the driving wheels and drive the crawlers. The front wheels are driven wheels, which only play the role of supporting, guiding and tensioning. The power source is directly driven. Due to the two-wheel drive, the driving power is all output by the two driving wheels, and the driving force is seriously insufficient. Insufficient driving force will cause the following problems: 1. When the roadheader is moving (especially for tunneling and bottom clearing), the traveling resistance is relatively large, which will cause the walking power source to be stuffy, and in severe cases, the driving powe...

AI Technical Summary

Problems solved by technology

Insufficient driving force will cause the following problems: 1. When the roadheader is moving (especially for tunneling and bottom clearing), the traveling resistance is relatively large, which will cause the walking power source to be stuffy, and in severe cases, the driving power source components will be damaged; 2. The roadheader The climbing ability is not strong, and it cannot adapt to the operation of the large-inclination working face; 3. Insufficient driving power will also reduce the scope of the roadheader's ability to adapt to the floor

[0003] At the same time, the driving power is all output by the two driving wheels. It is required that the driving wheel and its transmission reduction gear have high strength, rigidity and other mechanical properties to meet the high-power drive. In order to meet this requirement, the design modulus of the track sprocket It must be enlarged, resulting in excessive volume concentration and a high center of gravity of the chassis, which also greatly reduces the climbing ability of the roadheader

[0004] The traditional two-drive form of the walking part is only under tension on the upper and lower tracks when it is moving, and at the same time, the force on the upper and lower tracks is uneven, which seriously affects the service life of the track.

[0005] There are only two braking points in the driving part, and the braking force must be transmitted through the crawler belt. One is that the braking force is unevenly distributed and the braking force is weak; the other is that the braking response is slow and there is a long delay. Forward or backward, when braking, the loose side track should be fully tightened to maximize the braking performance, so the second drive running part is extremely unfavorable for the working surface with poor floor conditions

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