Pillar type two-way multi-point synchronous rock hydraulic breaking device

Abstract

The invention provides a hydraulic jack-prop type bidirectional multi-point synchronous rock crushing device which comprises a moving trolley, a power system, a hydraulic control system and an execution system. A motor is connected with a hydraulic pump. One end of the hydraulic pump is connected with a hydraulic oil tank. The other end of the hydraulic pump is connected with an oil inlet of a three-position four-way valve. Oil passing through the three-position four-way valve is divided into three ways, and the first way is connected with an electromagnetic control hydraulic valve group through a check valve; the second way is connected with a plunger type primary hydraulic cylinder through a bilateral switching control valve a and a bilateral switching control valve b; the third way conducts initial cycle of the device through a hydraulic oil way; the initial cycle is that hydraulic oil in the device returns back to the hydraulic oil tank after passing through the hydraulic pump and a hydraulic oil cooling device from the hydraulic oil tank; multiple groups of small jack-prop type jack pistons on working rods start to work, symmetrical jack props stretch out to apply tension-shear stress on rock, and the rock is crushed when the applied tension-shear stress exceeds the limit damage tension-shear stress of the rock.

Description

technical field [0001] The invention relates to a top-pillar type two-way multi-point synchronous rock hydraulic crushing device, which belongs to the technical field of non-explosive rock excavation and excavation for rock tunnels or rock underground engineering. Background technique [0002] Rock tunnel excavation is currently mainly carried out by the drill and blast method. However, the vibration, flying rocks, shock waves, noise, and harmful gases generated by the drilling and blasting method will not only affect the surrounding environment, but also generate flying rocks and gun smoke during the blasting process, forcing the drilling and blasting method to only use intermittent cycle operations, which greatly affects the drilling environment. Time utilization for drilling, ballasting and support work. In addition, if the tunnel excavation is carried out in a complex urban environment, the blasting vibration will definitely cause damage to the adjacent buildings and st...

AI Technical Summary

Problems solved by technology

The cantilever roadheader is another commonly used tunnel boring machine. It is flexible and can excavate tunnels of any shape and cross-section. However, it also has limitations. Generally, it can only be used for rocks with a uniaxial strength of less than 120MPa.

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