Crawler type driven walking supporting mechanism suitable for roadheader

Abstract

The invention relates to a crawler type driven walking supporting mechanism suitable for a roadheader. A chain wheel of the walking portion is arranged at the front end of a wheel frame, a tensioningwheel is arranged at the rear end of the wheel frame, and the tensioning wheel is connected with the chain wheel through a crawler chain; one end of a spline shaft is fixedly connected to a chain wheel shaft, the other end of the spline shaft is fixedly connected to a shaft of a driving wheel crawler of a roadheader, and the crawler driving wheel of the roadheader provides rotation power to the chain wheel; one end of a balance shaft is connected to the wheel frame through a bearing, and the other end of the balance shaft is fixedly connected to a shaft of a crawler driven wheel of the roadheader; a plurality of weight bearing wheels are arranged between the tensioning wheel and the chain wheel in parallel; a supporting base of a supporting portion is fixedly installed on the wheel frame,and a supporting top beam and the supporting base are connected through a supporting oil cylinder; the end part of a piston rod of the supporting oil cylinder is slidably connected with the lower surface of a longitudinal beam through a dovetail slider, the lower surface of the longitudinal beam is provided with a dovetail chute, the dovetail slider is arranged in the dovetail chute and can move linearly along the dovetail chute, and plugs are arranged at the two ends of the chute respectively; and the end part of a cylinder barrel of the supporting oil cylinder is hinged to the upper surfaceof the supporting base.

Description

technical field [0001] The invention belongs to the technical field of tunneling support equipment, and in particular relates to a crawler-type driven walking support mechanism suitable for tunneling machines. Background technique [0002] With the rapid development of coal mine fully-mechanized mining technology and equipment and mine supporting facilities, the mining intensity of fully-mechanized mining face has doubled, prompting the amount of excavation work in coal mine underground roadway to also increase dramatically. [0003] The safety problem of temporary support in excavation work is a technical problem that has plagued coal production for a long time. Since the roof cannot be supported in time and effectively after tunnel excavation, rocks from the roof will often fall and cause injury accidents. The current solution to this problem There are mainly two schemes. One is to use an airborne advanced temporary support device with a simple structure. This device is mo...

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Problems solved by technology

[0003] The safety problem of temporary support in excavation work is a technical problem that has plagued coal production for a long time. Since the roof cannot be supported in time and effectively after tunnel excavation, rocks from the roof will often fall and cause injury accidents. The current solution to this problem There are mainly two schemes. One is to use an airborne advanced temporary support device with a simple structure. This device is mostly installed directly above the cutting part of the roadheader and can move together with the roadheader. However, the support area of ​​this device is relatively small. The other is the non-airborne tunneling support device, which can move by itself and realize continuous tunneling and continuous support operations, but it mostly adopts the cross-stepping forward method. If the bottom plate is soft or uneven, it will make it difficult for the support device to move or retreat. During the movement of the support device, the support position may be deviated due to the difference in the left and right travel resistance.

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