A driving device of a heavy-duty scraper machine and its hydraulic system

Abstract

The invention discloses a driving device of a heavy-load scraper conveyor and a hydraulic system of the driving device. The driving device comprises a supporting plate, an active driving device, two driven driving devices and the hydraulic driving system, wherein the active driving device comprises a main fixing table provided with a power device, the power device comprises a bidirectional hydraulic motor, a photoelectric encoder, a torque sensor and a right-angle speed reducer which are connected together in sequence, the right-angle speed reducer is connected with a chain wheel shaft, two driving chain wheels are symmetrically arranged at the two ends of the chain wheel shaft, the driven driving devices comprise small fixing tables provided with power devices, right-angle speed reducerson the small fixing tables are connected with cantilever shafts, driven chain wheels are arranged on the cantilever shafts, the two driving chain wheels and the two driven chain wheels are connected together correspondingly through two parallel scraper chains, a plurality of scrapers are connected between the two scraper chains, and the hydraulic driving device provides power. The device is simplein structure, high in reliability, capable of achieving rapid starting and stopping under a large load and capable of effectively adjusting the tension difference between the two scraper chains of the scraper conveyer.

Description

technical field [0001] The invention relates to the field of driving devices for heavy-duty scraper machines, in particular to a driving device for heavy-duty scraper machines and a hydraulic system thereof. Background technique [0002] The scraper conveyor is a semi-closed continuous transportation equipment that uses scraper chains to transport bulk materials. When conveying materials, the scraper chains are all buried in the materials, so it is called scraper conveyor. The scraper machine has simple structure, convenient installation and maintenance, and flexible process layout; it can not only transport horizontally, but also can transport obliquely or vertically; it can be used alone or in combination with multiple units. It is an indispensable transportation device for fully mechanized coal mining face. Scraper conveyors are widely used, but the existing scraper conveyors mainly have the following problems: First, most of the existing scraper conveyors do not have a ...

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Problems solved by technology

Scraper conveyors are widely used, but the existing scraper conveyors mainly have the following problems: First, most of the existing scraper conveyors do not have a scraper chain tension adjustment mechanism, when the load is scattered unevenly When this happens, the tension of the two scraper chains is likely to be inconsistent, resulting in unstable meshing between the scraper chain and the sprocket, resulting in accidents such as chain drop and chain jumping; secondly, the tension adjustment method of the scraper conveyor in practical application is passive when the machine is stopped. The adjustment method does not have real-time control performance, which is not conducive to the adjustment and maintenance of the tension of the scraper chain during transportation; the third is the existing motor-reducer-sprocket drive mechanism, when it starts and stops quickly under heavy load It will lead to unstable startup, which will easily cause large jitter and affect the life of the scraper machine; Fourth, there is no good fault emergency design, so that the whole machine cannot cope with sudden faults well

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