Stepless lifting device for scraper conveyor

Abstract

The invention relates to a stepless lifting device for a scraper conveyor and belongs to the technical field of mine equipment. The stepless lifting device for the scraper conveyor comprises a base, a bearing platform, a hydraulic oil cylinder and two sets of oppositely-arranged work arm frames; the hydraulic oil cylinder is located between the base and the bearing platform; the top ends of the work arm frames are hinged to the bearing platform; the bottom ends of the work arm frames are hinged to the base; each work arm frame comprises a first work arm and a second work arm which are arranged in a shear fork type; each first work arm and the corresponding second worm arm are hinged through a hinged shaft; and the work arm frames are provided with the hydraulic oil cylinder used for controlling the work arm frames to ascend and descend. The work arm frames which are hinged in the shear fork type are adopted for the stepless lifting device for the scraper conveyor, the structure is simple and compact, and cost is low; because the hydraulic oil cylinder is in an oblique supporting type, the initial position height of the lifting device is substantially reduced, the height adjusting range is relatively increased substantially, the stepless adjustment of a machine head, a machine tail and a transition groove of the scraper conveyor within the height adjusting range is achieved, the labor intensity is lowered, the work efficiency is improved, and practicability is high.

Description

technical field [0001] The invention belongs to the technical field of mining equipment, and in particular relates to a stepless raising device for a scraper conveyor. Background technique [0002] At present, there are two main types of pads used for the head, tail and transition groove of the scraper conveyor in the fully mechanized mining face: [0003] 1. The height cannot be adjusted, and the pad frame with a certain height is welded with steel plates. This type of pad frame cannot change the height steplessly according to the complex and changeable operating environment in the mine. At the same time, this type of pad frame has requirements for the flatness of the bottom plate of the working surface used. High, labor-intensive, poor adaptability. [0004] 2. The lifting cylinder is set on the pad, and the lifting cylinder is vertically arranged on the pad. Disclosed as a kind of hydraulic lifting platform (notification number is CN205442570U) discloses that two hydrau...

AI Technical Summary

Problems solved by technology

Disclosed as a kind of hydraulic lifting platform (notification number is CN205442570U) discloses that two hydraulic systems are set between the base and the work surface, and the tops of the two lifting rods of the hydraulic system are connected with the work surface, which overcomes the single hydraulic system hydraulic lift stability comparison. poor technical problem

However, due to the vertical setting of the hydraulic system, limited by the structural form of the hydraulic system, the initial position of the pad is relatively high, resulting in a relatively narrow range of height adjustment and poor adaptability

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