Coal seam permeability-increasing vibration cracking device with frequency adjusting and timing functions

Abstract

The invention provides a coal seam permeability-increasing vibration cracking device with frequency adjusting and timing functions. The coal seam permeability-increasing vibration cracking device comprises a base; a shell and the base are welded together in a sealed mode; the base and a coal cutter are fixedly connected together, and the base is placed in the middle of the coal cutter; the middleof an inner cavity of the shell is partitioned into two areas through a partition plate; and a cable branch box is arranged on the partition plate. On the basis of a traditional vibration device, a frequency adjustable device is arranged, thus the vibration frequency is adjusted, and a timing device is arranged, so that the vibration time is controllable; the coal seam permeability-increasing vibration cracking device is simple and clear in structure, lines are clear and not prone to being confused, and thus inconvenient operation and potential risk factors caused by line confusion are effectively avoided; the coal seam permeability-increasing vibration cracking device can display the adjusted frequency and time, clearness is achieved, and setting errors are avoided; and the coal seam permeability-increasing vibration cracking device is good in airtightness, the influence of the complex underground environment on the coal seam permeability-increasing vibration cracking device can be effectively avoided, and the potential hazard of the coal seam permeability-increasing vibration cracking device to the environment is also prevented.

Description

technical field [0001] The invention belongs to the technical field of vibration fracturing, and more specifically relates to a frequency-adjustable and timing-adjustable vibration fracturing device for increasing coal seam permeability. Background technique [0002] Vibration devices are widely used in various industries and fields. The working part of the vibrator is a rod-shaped hollow cylinder with an eccentric vibrator inside. Driven by the motor, it rotates at high speed to generate high-frequency and slight vibration. The vibration frequency can reach 12000-15000 times / min, good vibrating effect, simple structure and long service life. It is suitable for vibrating beams, columns, walls and other components and mass concrete. [0003] However, currently there are few vibrating devices on the market for vibration fracturing in mines. General vibrating devices cannot adjust the vibration frequency at any time according to the site conditions. The problems of long vibrat...

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Problems solved by technology

[0005] In order to solve the above technical problems, the present invention provides a frequency-adjustable and timing coal seam anti-permeability vibration fracturing device to solve the problem that the general vibration device cannot adjust the vibration frequency at any time according to the situation on site, and the vibration time caused by the vibration frequency is too long. The problem of poor vibration effect always exists. When the cracks in the coal body are fully opened, the vibration cannot continue to increase the permeability of the coal body.

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