Automatic hydraulic shock source circuit, device and system mounted on tunnel boring machine

Abstract

The invention discloses an automatic hydraulic shock source loop, device and system carried on a tunneling machine. An impact oil cylinder can rotate around a rotation type installing column, this characteristic is utilized for achieving two-freedom-degree action of the impact oil cylinder, by means of the ingenious design of the hydraulic loop, higher response speed and control precision of a high-frequency-response servo valve can be utilized for being combined with the oil supplementing effect of an energy storing device and design of a controller, oil can be supplied to a rodless cavity ofthe impact oil cylinder fast, and by means of the oil supplementing effect of a differential circuit, fast forward impacting of the impact oil cylinder is achieved. Automatic shock actuating and faststriking can be achieved, striking force can be adjusted, striking strength is uniform, and geology advanced prediction in the construction process of the tunneling machine is benefitted.

Description

technical field [0001] The invention relates to the field of geological advance prediction during the construction process of a tunnel boring machine, in particular to an automatic hydraulic seismic source circuit, device and system mounted on a tunnel boring machine. Background technique [0002] Tunnel boring machine construction has been more and more widely used in tunnel construction, but tunnel boring machine has poor adaptability to changes in geological conditions, and often encounters various adverse geological conditions that affect the construction process and construction safety, such as Faults and broken zones that may appear in front of the sub-face can easily lead to serious consequences such as tunnel collapse and machine jamming, ranging from huge economic losses to severe construction delays and even casualties. In engineering applications, the most effective solution is to use advanced geological detection technology to detect the geological conditions in ...

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Problems solved by technology

[0005] (1) The explosive source has a high safety risk, and improper operation can easily cause casualties and equipment damage, and has high requirements for the storage and transportation of explosives;

[0006] (2) The space in the tunnel boring machine construction tunnel is very narrow, it is not convenient to swing the sledgehammer, and it is difficult to guarantee the intensity of the seismic wave generated by manually swinging the sledgehammer to hit the surrounding rock, resulting in the low quality of the excited seismic wave, which seriously affects the detection distance and detection effects;

[0007] (3) The giant magnetostrictive source is made of rare earth materials. The giant magnetostrictive source that meets the shock intensity requirements is very expensive and easily damaged, so its application in actual engineering is very limited

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