Full-mechanized filling and coal-mining hydraulic support

Abstract

The invention discloses a full-mechanized filling and coal-mining hydraulic support. The ull-mechanized filling and coal-mining hydraulic support mainly comprises a face guard, a front canopy, a front top beam, a middle top beam, a rear top beam, a front upright post, a middle upright post, a rear upright post, a four-bar mechanism, a cut and fill mining conveyor, an adjusting jack and a base. The rear end of the middle top beam is hinged with the rear top beam for drawing coal; a rail for the cut and fill mining conveyor to slide forwards and backwards is arranged on the bottom ends of the middle top beam and the rear top beam; a pushing and pulling oil cylinder for raising or dropping the rear top beam is arranged between the middle top beam and the rear top beam; the rear top beam comprises a box body, wherein a drawing and pulling box matched with the box body is arranged inside the box body; a hydraulic cylinder which is connected with the inside of the box body is symmetrically arranged inside the drawing and pulling box; a drawing and pulling plate is arranged on the box body; a coal carving machine is arranged on the drawing and pulling plate; and a pushing and pressing plate is arranged on the front end of the rear top beam. The device not only can support the fully-mechanized caving and mining surfaces, but also can completely fill normal coal caving and milling regions of the bracket, so that coal caving and filling cannot affect each other. The bracket has simple structure, strong adaptability and operability, good filling effects, and extensive practicability.

Description

technical field [0001] The invention relates to a hydraulic support for fully mechanized caving and filling coal mining, which is especially suitable for a hydraulic support for comprehensive mechanized top coal caving and filling of coal mining working faces for supporting, coal mining, coal caving and filling at the same time. technical background [0002] The rapid development of China's economy requires rapid growth of coal production. my country's thick coal seam reserves are very rich, and the recoverable reserves account for 45% of the total reserves of production mines. The production mines with thick coal seams account for 40.6% of the total number of production mines in the country, and they are widely distributed. [0003] In order to solve the problem of "three under" coal pressure, my country has adopted various technical measures such as traditional strip mining, relocation of villages, and filling mining to liberate "three under" coal pressure and increase the...

AI Technical Summary

Problems solved by technology

In the process of fully mechanized mining and filling, we found that many coal mines have thicker coal seams in the "three lower" coal mines. Due to the limitation of the height of fully mechanized mining and filling, layered mining has to be used. The traditional fully mechanized mining and filling hydraulic support cannot be used normally, which greatly How to realize comprehensive mechanized top-coal caving and filling mining simply, quickly and efficiently is a big problem

Images