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Mine ultrasonic rock breaking equipment

A kind of rock breaking equipment, ultrasonic technology, applied in the direction of borehole/well parts, drilling with vibration, earthwork drilling and mining, etc., can solve the problems of high pollution, high consumption, low efficiency, etc., and achieve reduced dust concentration, low noise level, The effect of less energy consumption

Inactive Publication Date: 2018-07-24
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of low efficiency, high pollution and high consumption of existing rock-breaking devices, the present invention provides a mine ultrasonic rock-breaking equipment, which uses high-frequency AC excitation with ultrasonic frequency according to the inverse piezoelectric effect The voltage drives the ultrasonic driver to generate longitudinal vibration with ultrasonic frequency. This high-frequency vibration is transmitted to the rock surface through the ultrasonic drill pipe to generate high-frequency dynamic load with ultrasonic frequency to break the rock

Method used

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  • Mine ultrasonic rock breaking equipment
  • Mine ultrasonic rock breaking equipment
  • Mine ultrasonic rock breaking equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 As shown, a mine ultrasonic rock breaking equipment includes an ultrasonic generator 1 , an ultrasonic transducer 2 , a horn 3 , a hollow connector 4 , an ultrasonic drill pipe 5 , and a sphere 6 . The ultrasonic generator 1 is connected to the ultrasonic transducer 2, the end of the ultrasonic drill rod 5 is fixed on the front end of the horn 3, the two ends of the hollow connector 4 are connected to the front end of the horn 3 and the end of the ultrasonic drill rod 5, and the spherical 6 can vibrate back and forth in the hollow connecting member 4 along the direction from the front end of the horn 3 to the end of the ultrasonic drill rod 5 . When in use, the ultrasonic generator 1 converts commercial power into a high-frequency alternating current signal matched with the ultrasonic transducer 2 to drive the ultrasonic transducer 2 to work. Driven by the ultrasonic generator 1, the ultrasonic transducer 2 converts the input electric energy into longi...

Embodiment 2

[0027] Such as figure 2 As shown, an ultrasonic drilling and rock breaking equipment includes a connecting nut 8 between drill rods, a power supply wire 9, an ultrasonic drilling rig base 10, an ultrasonic generator 1, a connecting ring 11, an ultrasonic transducer 2, a horn 3, and a drill rod 12. Hollow connector 4, ultrasonic drill pipe 5, sphere 6, connecting rod 7, drill bit 13, water injection nozzle 14. The ultrasonic generator 1 and the ultrasonic transducer 2 are located in the middle of the drill pipe 12, the end of the horn 3 is located at the front of the drill pipe 12, and the front end of the horn 3 passes through the front end of the drill pipe 12 and extends into the drill bit 13. The end of the drill pipe 5 is located inside the drill bit 13 and is connected to the front end of the horn 3, the front end of the ultrasonic drill pipe 5 passes through the top of the drill bit 13, the water injection nozzle 14 is located at the top of the drill bit 13, and the wat...

Embodiment 3

[0051] Such as Figure 4 As shown, a top-coal ultrasonic weakening equipment includes a hydraulic support shield beam 15, a hydraulic support top beam 16, a water injection nozzle 17 and the mine ultrasonic rock breaking equipment 18 in Example 1. The end of hydraulic support shield beam 15 and hydraulic support top beam 16 mine ultrasonic rock breaking equipment 18 is fixed on the front end of hydraulic support top beam 16, and water injection nozzle 17 is fixed on the front end side wall of hydraulic support top beam 16. The water injection direction of the water injection nozzle 17 is towards the front end of the mine ultrasonic rock breaking equipment 18 . When using the top coal ultrasonic weakening equipment to drill holes, the water injection nozzle 17 sprays water to the front end of the mine ultrasonic rock breaking equipment 18 . The propagation of ultrasonic waves in water produces cavitation, and the rock surface is deformed and eroded after being impacted by cavi...

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Abstract

The invention provides mine ultrasonic rock-breaking equipment. The mine ultrasonic rock-breaking equipment comprises an ultrasonic generation module, an amplitude rod, a hollow connecting piece, a free-mass sphere, an ultrasonic drill pipe. The tail end of the amplitude rod is fixed to the front end of the ultrasonic generation module, the two ends of the hollow connecting piece are connected with the amplitude rod and the ultrasonic drill pipe separately, and the free mass sphere can oscillates back and forth in the hollow connecting piece. According to the mine ultrasonic rock-breaking equipment, an ultrasonic driver is driven by the high-frequency alternating current excitation voltage with ultrasonic frequency to produce vertical vibration with ultrasonic frequency according to the inverse piezoelectric effect, and the high-frequency vibration is transmitted to the rock surface through the amplitude rod, the free mass sphere and the ultrasonic drill pipe to generate high-frequencydynamic loads with ultrasonic frequencies to break rocks. Ultrasonic vibration has the characteristics of high frequency, high vibration and low amplitude, so that the cumulative growth speed of rockdamage is higher than that caused by general fatigue load, the time for rocks to reach the fatigue failure limit is short, and the rock-breaking efficiency is higher.

Description

technical field [0001] The invention relates to mine rock-breaking equipment, in particular to a mine ultrasonic rock-breaking equipment. Background technique [0002] Tunneling and mining are two basic procedures for developing and utilizing underground mineral resources. The drilling and blasting method is generally used in rock roadway or hard coal roadway. The most commonly used method of weakening the hard top-coal or hard top-coal in the coal mining face is the hydraulic fracturing method, that is, digging deep holes in front of the working face before mining, determining the fracturing section, sealing the fracturing section, and injecting high-pressure water into the interior , and then pre-fracture the coal rock mass. Whether it is the excavation of the roadway or the weakening of the top coal or the top coal, it is necessary to use different types of drilling rigs for drilling. The commonly used drill drilling method is based on the principle of dense stone core...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/24E21B21/00E21C27/28
CPCE21B7/24E21B21/00E21C27/28
Inventor 黄炳香张新李楠
Owner CHINA UNIV OF MINING & TECH
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