CA3013099C - Rock breaking mechanism by combined pulsed jet and mechanical impact - Google Patents
Rock breaking mechanism by combined pulsed jet and mechanical impact Download PDFInfo
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- CA3013099C CA3013099C CA3013099A CA3013099A CA3013099C CA 3013099 C CA3013099 C CA 3013099C CA 3013099 A CA3013099 A CA 3013099A CA 3013099 A CA3013099 A CA 3013099A CA 3013099 C CA3013099 C CA 3013099C
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- drill rod
- jet
- spherical
- power unit
- dynamic seal
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- 239000011435 rock Substances 0.000 title claims abstract description 78
- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- 230000003068 static effect Effects 0.000 claims abstract description 44
- 230000007704 transition Effects 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 239000000956 alloy Substances 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 230000010355 oscillation Effects 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- 229920000459 Nitrile rubber Polymers 0.000 claims 1
- 239000003245 coal Substances 0.000 description 24
- 238000005553 drilling Methods 0.000 description 11
- 230000009918 complex formation Effects 0.000 description 7
- 239000000428 dust Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005065 mining Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/60—Slitting by jets of water or other liquid
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C27/00—Machines which completely free the mineral from the seam
- E21C27/20—Mineral freed by means not involving slitting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C45/00—Methods of hydraulic mining; Hydraulic monitors
- E21C45/02—Means for generating pulsating fluid jets
- E21C45/04—Means for generating pulsating fluid jets by use of highly pressurised liquid
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
A rock breaking mechanism by combined pulsed jet and mechanical impact is provided, comprising a guide rail, a thrust cylinder hinged to the guide rail, a hydraulic impact power unit slidably mounted on the guide rail and hinged to the thrust cylinder's piston rod, a drill rod, a drill bit, a dynamic seal sleeve assembly, static seal transition sleeves, circlips, static seal rings, dynamic seal rings, and a drill rod support base. The drill rod has one end connected to the hydraulic impact power unit's output shaft and the other end connected to the drill bit. The static seal transition sleeves are provided at joints between the output shaft and the drill rod and between the drill rod and the drill bit. The dynamic seal sleeve assembly's outer sleeve is screw-fitted on the housing of the hydraulic impact power unit, and its inner sleeve is screw-fitted on the out sleeve.
Description
ROCK BREAKING MECHANISM BY COMBINED
PULSED JET AND MECHANICAL IMPACT
TECHNICAL FIELD
100011 The invention relates to a rock breaking mechanism by combined pulsed jet and mechanical impact, which is most suitable for drilling or breaking rocks with a large Protodikonov's hardness coefficient.
BACKGROUND
PULSED JET AND MECHANICAL IMPACT
TECHNICAL FIELD
100011 The invention relates to a rock breaking mechanism by combined pulsed jet and mechanical impact, which is most suitable for drilling or breaking rocks with a large Protodikonov's hardness coefficient.
BACKGROUND
[0002] In 2015, BP Statistical Review of World Energy noted that China remains as the world's largest consumer of energy, accounting for 23% of global consumption and 61% of global net growth; coal consumption accounts for 66.03% of China's total consumption, and in the future, coal will remain as the irreplaceable primary energy resource for China for a long period of time. The Outline of National Medium and Long-term Scientific and Technological Development Plan (2006-2020) clearly states that it is imperative to substantially strengthen the research on technology of safe and efficient exploitation and utilization of coal resources, and explicitly urges focused research on technology of mining of ore bodies in deep and complex formations. In 2011, the Twelfth Five-Year Plan of National Energy Science and Technology released by the National Energy Administration clearly states that efficient exploitation of coal resources under complex geological conditions is the primary research direction in the future and urges research and development of multi-mode rock tunneling and coal mining technique and equipment suitable for the complex formation conditions in China.
[0003] At present, coal mining has gradually extended into deep and complex formations, posing higher requirements and new challenges to the technique and equipment for safe and - -efficient exploitation of coal resources in deep and complex formations. With increase of the in-situ stress, the elastic modulus, hardness, and failure strength of the coal rocks in deep and complex formations often increase accordingly, often resulting in a uniaxial compressive strength of over 150 MPa. Coal rock drilling is the prerequisite operation for efficient implementation of engineering projects such as orebody blasting, stress relief mining, and roadway support. However, the problems of low drilling efficiency and large amount of dust associated with hard coal rocks directly constrain efficient exploitation of ore body resources such as coal in deep and complex formations. At present, two approaches are mainly adopted for underground coal rock drilling, i.e., mechanical cutting and mechanical impact. During mechanical cutting, cutters suffer from severe wear and require frequent replacement, as a result, the approach is mainly used for cutting and breaking coal rocks with a Protodikonov's Hardness Coefficient f8. Mechanical impact can be used to break most coal rocks, but its operation in hard coal rocks (f>15) encounters problems such as severe wear and tearing off of the spherical buttons, a low rock breaking efficiency, and a large amount of dust, thereby greatly reducing the rock breaking ability and efficiency of mechanical impact and reducing service time and reliability of equipment. Therefore, it has become a significant problem and challenge for efficient exploitation of ore body resources such as coal in deep and complex formations to realize safe and efficient breaking of hard coal rocks.
100041 High-pressure water jet rock breaking is a coal rock breaking technique which utilizes high-speed "water arrow" impact for breaking, erosion, and the like.
It has been proved to have auxiliary effect of increasing rock breaking ability of the cutter and prolong the service life of the cutter. However, the large volume of water consumed by the continuous high-pressure water jet results in a large area of water accumulated in the workplace of the coal rock breaking machinery, thereby causing difficulty for proper operation of the equipment. Common continuous water jet-assisted rock breaking only generates a single "water hammer pressure" and has a limited rock impacting and breaking ability.
Furthermore, subsequent "stagnation pressure" is too low to aggravate the internal damage and crack propagation in hard coal rocks, preventing widespread use of such a technique in hard coal rock breaking equipment. Pulsed jet has a coal rock impacting and breaking ability much stronger than that of continuous jet. Pulsed jet-assisted rock breaking can generate multiple "water hammer pressures" intermittently. As a result, multi-source compressive stress waves are superposed and reflected in coal rocks, causing volumetric fracture and fatigue damage of the coal rocks. In addition, the characteristics of low temperature impact and low water consumption of pulsed jet make it possible to reduce the wear and consumption of the spherical buttons, prolong the service life of the spherical buttons, and improve operation conditions for mechanical impact rock breaking.
SUMMARY
[0005] It is an objective of the invention to overcome the shortcomings of the prior art by providing a combined pulsed jet and mechanical impact rock breaking process which can efficiently drill or break rocks with an extremely large Protodikonov's hardness coefficient, thereby reducing the difficulty of mechanical impact rock breaking and decreasing concentration of dust from broken rocks, and prolonging the service life of mechanical spherical buttons.
[0006] The technical solution according to the invention is a rock breaking mechanism by combined pulsed jet and mechanical impact, including a guide rail, a thrust cylinder, a hydraulic impact power unit, a drill rod, a drill bit, a dynamic seal sleeve assembly, static seal transition sleeves, circlips, static seal rings, dynamic seal rings, and a drill rod support base.
The drill rod support base is fixed on the guide rail, a cylinder body of the thrust cylinder is hinged to the guide rail, a piston rod of the thrust cylinder is hinged to a housing of the hydraulic impact power unit, the hydraulic impact power unit is slidably mounted on the guide rail, an output shaft of the hydraulic impact power unit is connected to one end of the drill rod through a threaded connection, the other end of the drill rod is connected to the drill bit through a threaded connection, the drill rod passes through a bore in the drill rod support base, the dynamic seal sleeve assembly is screw-fixed on a housing of the hydraulic impact power unit, a high-pressure water inlet of the dynamic seal sleeve assembly, a water channel inside the output shaft of the hydraulic impact power unit, a water channel inside the drill rod, a water channel inside the drill bit, and a jet-spherical-button oscillation cavity of each of self-oscillating jet spherical buttons are sequentially connected, and the static seal transition sleeves are fixedly mounted via the circlips inside the ends of the drill rod that connected respectively to the output shaft of the hydraulic impact power unit and the drill bit.
[0007] Preferably, an outer sleeve of the dynamic seal sleeve assembly is fixed on the housing of the hydraulic impact power unit through fastening screws, an inner sleeve of the dynamic seal sleeve assembly is fixed on the outer sleeve of the dynamic seal sleeve assembly through fastening screws, the inner sleeve and outer sleeve of the dynamic seal sleeve assembly are provided with a high-pressure water inlet at corresponding positions, a static high-pressure water sealing is effected between the inner sleeve and outer sleeve of the dynamic seal sleeve assembly through static end face seal rings, and an inner surface of the inner sleeve of the dynamic seal sleeve assembly is hard chrome plated.
[0008] Preferably, the output shaft of the hydraulic impact power unit is provided with an internal right-angled water channel and a plurality of output-shaft dynamic seal ring grooves.
[0009] Preferably, a shoulder I and a shoulder II are machined on the drill rod. Outer diameters of the shoulder I and the shoulder II respectively match outer diameters of end faces adjacent to an external connection thread of the output shaft of the hydraulic impact power unit and at an internal connection thread of the drill bit.
[0010] Preferably, a plurality of mechanical spherical buttons and the self-oscillating jet spherical buttons are regularly embedded in the drill bit. Tips of the self-oscillating jet spherical buttons are set back from tips of the mechanical spherical buttons by a distance. A
plurality of debris guide slots are machined on the perimeter of a body of the drill bit.
[0011] Preferably, a jet-spherical-button alloy head of the self-oscillating jet spherical button is embedded in the body of the jet spherical button. A tiny water channel I is machined inside the jet-spherical-button alloy head, a tiny water channel II is machined at the bottom of the body of the jet spherical button. A jet-spherical-button oscillation cavity is formed inside the jet-spherical-button alloy head and the body of the jet spherical button.
The tiny water channel I and tiny water channel II have a diameter of about 1 mm-2mm. An included angle between the tiny water channel I and the center line of the alloy head of the jet spherical
100041 High-pressure water jet rock breaking is a coal rock breaking technique which utilizes high-speed "water arrow" impact for breaking, erosion, and the like.
It has been proved to have auxiliary effect of increasing rock breaking ability of the cutter and prolong the service life of the cutter. However, the large volume of water consumed by the continuous high-pressure water jet results in a large area of water accumulated in the workplace of the coal rock breaking machinery, thereby causing difficulty for proper operation of the equipment. Common continuous water jet-assisted rock breaking only generates a single "water hammer pressure" and has a limited rock impacting and breaking ability.
Furthermore, subsequent "stagnation pressure" is too low to aggravate the internal damage and crack propagation in hard coal rocks, preventing widespread use of such a technique in hard coal rock breaking equipment. Pulsed jet has a coal rock impacting and breaking ability much stronger than that of continuous jet. Pulsed jet-assisted rock breaking can generate multiple "water hammer pressures" intermittently. As a result, multi-source compressive stress waves are superposed and reflected in coal rocks, causing volumetric fracture and fatigue damage of the coal rocks. In addition, the characteristics of low temperature impact and low water consumption of pulsed jet make it possible to reduce the wear and consumption of the spherical buttons, prolong the service life of the spherical buttons, and improve operation conditions for mechanical impact rock breaking.
SUMMARY
[0005] It is an objective of the invention to overcome the shortcomings of the prior art by providing a combined pulsed jet and mechanical impact rock breaking process which can efficiently drill or break rocks with an extremely large Protodikonov's hardness coefficient, thereby reducing the difficulty of mechanical impact rock breaking and decreasing concentration of dust from broken rocks, and prolonging the service life of mechanical spherical buttons.
[0006] The technical solution according to the invention is a rock breaking mechanism by combined pulsed jet and mechanical impact, including a guide rail, a thrust cylinder, a hydraulic impact power unit, a drill rod, a drill bit, a dynamic seal sleeve assembly, static seal transition sleeves, circlips, static seal rings, dynamic seal rings, and a drill rod support base.
The drill rod support base is fixed on the guide rail, a cylinder body of the thrust cylinder is hinged to the guide rail, a piston rod of the thrust cylinder is hinged to a housing of the hydraulic impact power unit, the hydraulic impact power unit is slidably mounted on the guide rail, an output shaft of the hydraulic impact power unit is connected to one end of the drill rod through a threaded connection, the other end of the drill rod is connected to the drill bit through a threaded connection, the drill rod passes through a bore in the drill rod support base, the dynamic seal sleeve assembly is screw-fixed on a housing of the hydraulic impact power unit, a high-pressure water inlet of the dynamic seal sleeve assembly, a water channel inside the output shaft of the hydraulic impact power unit, a water channel inside the drill rod, a water channel inside the drill bit, and a jet-spherical-button oscillation cavity of each of self-oscillating jet spherical buttons are sequentially connected, and the static seal transition sleeves are fixedly mounted via the circlips inside the ends of the drill rod that connected respectively to the output shaft of the hydraulic impact power unit and the drill bit.
[0007] Preferably, an outer sleeve of the dynamic seal sleeve assembly is fixed on the housing of the hydraulic impact power unit through fastening screws, an inner sleeve of the dynamic seal sleeve assembly is fixed on the outer sleeve of the dynamic seal sleeve assembly through fastening screws, the inner sleeve and outer sleeve of the dynamic seal sleeve assembly are provided with a high-pressure water inlet at corresponding positions, a static high-pressure water sealing is effected between the inner sleeve and outer sleeve of the dynamic seal sleeve assembly through static end face seal rings, and an inner surface of the inner sleeve of the dynamic seal sleeve assembly is hard chrome plated.
[0008] Preferably, the output shaft of the hydraulic impact power unit is provided with an internal right-angled water channel and a plurality of output-shaft dynamic seal ring grooves.
[0009] Preferably, a shoulder I and a shoulder II are machined on the drill rod. Outer diameters of the shoulder I and the shoulder II respectively match outer diameters of end faces adjacent to an external connection thread of the output shaft of the hydraulic impact power unit and at an internal connection thread of the drill bit.
[0010] Preferably, a plurality of mechanical spherical buttons and the self-oscillating jet spherical buttons are regularly embedded in the drill bit. Tips of the self-oscillating jet spherical buttons are set back from tips of the mechanical spherical buttons by a distance. A
plurality of debris guide slots are machined on the perimeter of a body of the drill bit.
[0011] Preferably, a jet-spherical-button alloy head of the self-oscillating jet spherical button is embedded in the body of the jet spherical button. A tiny water channel I is machined inside the jet-spherical-button alloy head, a tiny water channel II is machined at the bottom of the body of the jet spherical button. A jet-spherical-button oscillation cavity is formed inside the jet-spherical-button alloy head and the body of the jet spherical button.
The tiny water channel I and tiny water channel II have a diameter of about 1 mm-2mm. An included angle between the tiny water channel I and the center line of the alloy head of the jet spherical
- 4 -button has a value preferably in the range of 100-15 .
[0012] Preferably, 0-rings are used for sealing at joints between any two of the output shaft of the hydraulic impact power unit, the inner and outer sleeves of the dynamic seal sleeve assembly, the drill rod, and the static seal transition sleeves, the output shaft of the hydraulic impact power unit, the inner and outer sleeves of the dynamic seal sleeve assembly, the drill rod, and the static seal transition sleeves. The static seal rings and the static end face seal rings are preferably made of nitrite rubber, and the dynamic seal rings are preferably made of polytetrafluoroethylene.
[0013] Preferably, inner surfaces of the static seal transition sleeves are hard chrome plated.
[0014] In one aspect, the present invention provides a rock breaking mechanism by combined pulsed jet and mechanical impact. The machanism provides a guide rail, a thrust cylinder, a hydraulic impact power unit comprising an output shaft having static seal ring grooves and dynamic seal ring grooves, a drill rod having a static seal ring groove, a drill bit, a dynamic seal sleeve assembly, static seal transition sleeves, circlips, static seal rings fitted within the static seal ring grooves of the output shaft and within the static seal ring groove of the drill rod, dynamic seal rings fitted within the dynamic seal ring grooves of the output shaft, and a drill rod support base. The drill rod support base is fixed on the guide rail. A cylinder body of the thrust cylinder is hinged to the guide rail. A piston rod of the thrust cylinder is hinged to a housing of the hydraulic impact power unit. The hydraulic impact power unit is slidably mounted on the guide rail. The output shaft of the hydraulic impact power unit is connected to one end of the drill rod through a threaded connection and the other end of the drill rod is connected to the drill bit through a threaded connection. The drill rod passes through a bore in the drill rod support base. The dynamic seal sleeve assembly is screw-fixed on the housing of the hydraulic impact power unit. A high-pressure water inlet of the dynamic seal sleeve assembly, a water channel inside the output shaft of the hydraulic impact power - s unit, a water channel inside the drill rod, a water channel inside the drill bit, and a jet-spherical-button oscillation cavity in each of self-oscillating jet spherical buttons are sequentially connected, and the static seal transition sleeves are fixedly mounted via the circlips inside the ends of the drill rod that connected respectively to the output shaft of the hydraulic impact power unit and the drill bit.
[0014a1 According to another aspect of the invention, high-pressure water output from a high-pressure water pump is introduced into the water channel inside the output shaft of the hydraulic impact power unit through the water inlet in the inner and outer sleeves of the dynamic seal assembly and then introduced through the static seal transition sleeve into the water channel inside the drill rod, the water channel inside the drill bit, and the oscillation cavity in the oscillating jet spherical button.
During operation of the hydraulic impact power unit, the drill rod and the drill bit experience a rotational torque and an intermittent impact force at the same time. The thrust cylinder propels the hydraulic impact power unit, the drill rod, and the drill bit into forward movement and provides a certain thrust force and a straight line velocity, so that the drill bit rotates and frequently impacts a rock to break it. The piston rod of the thrust cylinder is extended to propel the hydraulic impact power unit, the drill rod, and the drill bit by a single length of the drill rod to complete a drilling cycle.
Then the threaded connection between the output shaft of the hydraulic impact power unit and the drill rod is released so that the piston rod of the thrust cylinder is retracted to return the hydraulic impact power unit to its initial position. Another drill rod of the same structure and size is connected. The piston rod of the thrust cylinder is extended again to propel the hydraulic impact power unit, the drill rod, and the drill bit to complete another drilling cycle. After the rock drilling is completed, the drill rods are recovered in a reverse sequence. The hydraulic impact power unit is utilized owing to a better rock breaking ability of mechanical impact than that of mechanical cutting, - 5a -whereas the self-oscillating jet spherical buttons are utilized owing to a better rock impact breaking ability of high-pressure pulsed jet than that of a continuous jet. In this way, the advantageous characteristics of mechanical impact and water jet rock breaking can be combined to optimize their performance. High-pressure water output from the high-pressure water pump is introduced through the water inlet of the dynamic seal sleeve assembly, the water channel inside the output shaft of the hydraulic impact power unit, the water channel inside the drill rod, the water channel inside the drill bit, and the self-oscillating jet spherical button to generate a high-pressure pulsed jet for impacting the rock in advance, so that the rock is internally damaged and has a decreased strength. As such, it is much easier for the mechanical spherical buttons on the drill bit to break rock, thereby prolonging the service life of the mechanical spherical buttons, improving the rock impact breaking efficiency and ability of the mechanical spherical buttons, and enabling efficient breaking of hard rocks.
100151 The invention has the beneficial effects of full hydraulic driven, a small overall size, a simple and compact structure, convenient assembly and disassembly, a small size and high power of the thrust cylinder and the hydraulic impact power unit, simple and reliable high-pressure water sealing, and efficient breaking of rocks with a high protodrakonov's hardness coefficient with the aid of a pulsed jet. The pulsed jet generated by the self-oscillating jet spherical buttons can impact the rock to break or damage it in advance, which can minimize the resistance of the hard rock against impact and breaking, thereby making it easier for the mechanical spherical buttons to impact-break the hard rock and improving the hard rock drilling ability and efficiency of the rock breaking mechanism. In addition, the pulsed jet can not only effectively suppress the dust generated from broken rocks, but also make it easier for the mechanical spherical buttons to impact-break the hard rock, thereby prolonging the service life of the mechanical spherical buttons, improving the safety and efficiency in energy resource exploitation, therefore having great significance to the sustainable development of China's mines from social perspectives.
BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure la is a schematic view showing a structure of a rock breaking mechanism by combined pulsed jet and mechanical impact of the invention;
[0017] Figure lb is a top view of Figure la;
[0018] Figure lc is an enlarged view of the part A in Figure la;
[0019] Figure 2 is a cross-sectional view of a drill rod of the invention;
[0020] Figure 3a is a schematic view showing a structure of a drill bit of the invention;
[0021] Figure 3b is a side view of Figure 3a;
[0022] Figure 4 is a cross-sectional view of a dynamic seal sleeve assembly of the invention;
[0023] Figure 5 is a cross-sectional view of an output shaft of a hydraulic impact power unit of the invention; and [0024] Figure 6 is a cross-sectional view of a self-oscillating jet spherical button of the invention.
[0025] In the drawings: 1-guide rail; 2-thrust cylinder; 3-hydraulic impact power unit;
4-drill rod; 5-drill bit; 6-dynamic seal sleeve assembly; 7-static seal transition sleeve; 8-circlip;
9-static seal ring; 10-dynamic seal ring; 11-drill rod support base; 3-1-output shaft of the hydraulic impact power unit; 4-1-shoulder I of the drill rod; 4-2-internal connection thread of drill rod; 4-3-circlip groove of the drill rod; 4-4-water channel inside the drill rod;
4-5-shoulder II of the drill rod; 4-6-external connection thread of the drill rod; 4-7-static seal ring groove of the drill rod; 5-1-mechanical spherical button; 5-2-debris guide slot; 5-3-self-oscillating jet spherical button; 5-4-internal connection thread of the drill bit; 5-5-water channel inside the drill bit; 5-6-circlip groove of the drill bit; 6-1-outer sleeve of the dynamic seal sleeve assembly; 6-2-inner sleeve of the dynamic seal sleeve assembly; 6-3-static end face seal ring; 6-4-high-pressure water inlet; 6-5-fastening screw; 3-1-1-dynamic seal ring groove of the output shaft; 3-1-2-water channel inside the output shaft; 3-1-3-external connection thread of the output shaft; 3-1-4-static seal ring groove of the output shaft;
[0012] Preferably, 0-rings are used for sealing at joints between any two of the output shaft of the hydraulic impact power unit, the inner and outer sleeves of the dynamic seal sleeve assembly, the drill rod, and the static seal transition sleeves, the output shaft of the hydraulic impact power unit, the inner and outer sleeves of the dynamic seal sleeve assembly, the drill rod, and the static seal transition sleeves. The static seal rings and the static end face seal rings are preferably made of nitrite rubber, and the dynamic seal rings are preferably made of polytetrafluoroethylene.
[0013] Preferably, inner surfaces of the static seal transition sleeves are hard chrome plated.
[0014] In one aspect, the present invention provides a rock breaking mechanism by combined pulsed jet and mechanical impact. The machanism provides a guide rail, a thrust cylinder, a hydraulic impact power unit comprising an output shaft having static seal ring grooves and dynamic seal ring grooves, a drill rod having a static seal ring groove, a drill bit, a dynamic seal sleeve assembly, static seal transition sleeves, circlips, static seal rings fitted within the static seal ring grooves of the output shaft and within the static seal ring groove of the drill rod, dynamic seal rings fitted within the dynamic seal ring grooves of the output shaft, and a drill rod support base. The drill rod support base is fixed on the guide rail. A cylinder body of the thrust cylinder is hinged to the guide rail. A piston rod of the thrust cylinder is hinged to a housing of the hydraulic impact power unit. The hydraulic impact power unit is slidably mounted on the guide rail. The output shaft of the hydraulic impact power unit is connected to one end of the drill rod through a threaded connection and the other end of the drill rod is connected to the drill bit through a threaded connection. The drill rod passes through a bore in the drill rod support base. The dynamic seal sleeve assembly is screw-fixed on the housing of the hydraulic impact power unit. A high-pressure water inlet of the dynamic seal sleeve assembly, a water channel inside the output shaft of the hydraulic impact power - s unit, a water channel inside the drill rod, a water channel inside the drill bit, and a jet-spherical-button oscillation cavity in each of self-oscillating jet spherical buttons are sequentially connected, and the static seal transition sleeves are fixedly mounted via the circlips inside the ends of the drill rod that connected respectively to the output shaft of the hydraulic impact power unit and the drill bit.
[0014a1 According to another aspect of the invention, high-pressure water output from a high-pressure water pump is introduced into the water channel inside the output shaft of the hydraulic impact power unit through the water inlet in the inner and outer sleeves of the dynamic seal assembly and then introduced through the static seal transition sleeve into the water channel inside the drill rod, the water channel inside the drill bit, and the oscillation cavity in the oscillating jet spherical button.
During operation of the hydraulic impact power unit, the drill rod and the drill bit experience a rotational torque and an intermittent impact force at the same time. The thrust cylinder propels the hydraulic impact power unit, the drill rod, and the drill bit into forward movement and provides a certain thrust force and a straight line velocity, so that the drill bit rotates and frequently impacts a rock to break it. The piston rod of the thrust cylinder is extended to propel the hydraulic impact power unit, the drill rod, and the drill bit by a single length of the drill rod to complete a drilling cycle.
Then the threaded connection between the output shaft of the hydraulic impact power unit and the drill rod is released so that the piston rod of the thrust cylinder is retracted to return the hydraulic impact power unit to its initial position. Another drill rod of the same structure and size is connected. The piston rod of the thrust cylinder is extended again to propel the hydraulic impact power unit, the drill rod, and the drill bit to complete another drilling cycle. After the rock drilling is completed, the drill rods are recovered in a reverse sequence. The hydraulic impact power unit is utilized owing to a better rock breaking ability of mechanical impact than that of mechanical cutting, - 5a -whereas the self-oscillating jet spherical buttons are utilized owing to a better rock impact breaking ability of high-pressure pulsed jet than that of a continuous jet. In this way, the advantageous characteristics of mechanical impact and water jet rock breaking can be combined to optimize their performance. High-pressure water output from the high-pressure water pump is introduced through the water inlet of the dynamic seal sleeve assembly, the water channel inside the output shaft of the hydraulic impact power unit, the water channel inside the drill rod, the water channel inside the drill bit, and the self-oscillating jet spherical button to generate a high-pressure pulsed jet for impacting the rock in advance, so that the rock is internally damaged and has a decreased strength. As such, it is much easier for the mechanical spherical buttons on the drill bit to break rock, thereby prolonging the service life of the mechanical spherical buttons, improving the rock impact breaking efficiency and ability of the mechanical spherical buttons, and enabling efficient breaking of hard rocks.
100151 The invention has the beneficial effects of full hydraulic driven, a small overall size, a simple and compact structure, convenient assembly and disassembly, a small size and high power of the thrust cylinder and the hydraulic impact power unit, simple and reliable high-pressure water sealing, and efficient breaking of rocks with a high protodrakonov's hardness coefficient with the aid of a pulsed jet. The pulsed jet generated by the self-oscillating jet spherical buttons can impact the rock to break or damage it in advance, which can minimize the resistance of the hard rock against impact and breaking, thereby making it easier for the mechanical spherical buttons to impact-break the hard rock and improving the hard rock drilling ability and efficiency of the rock breaking mechanism. In addition, the pulsed jet can not only effectively suppress the dust generated from broken rocks, but also make it easier for the mechanical spherical buttons to impact-break the hard rock, thereby prolonging the service life of the mechanical spherical buttons, improving the safety and efficiency in energy resource exploitation, therefore having great significance to the sustainable development of China's mines from social perspectives.
BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure la is a schematic view showing a structure of a rock breaking mechanism by combined pulsed jet and mechanical impact of the invention;
[0017] Figure lb is a top view of Figure la;
[0018] Figure lc is an enlarged view of the part A in Figure la;
[0019] Figure 2 is a cross-sectional view of a drill rod of the invention;
[0020] Figure 3a is a schematic view showing a structure of a drill bit of the invention;
[0021] Figure 3b is a side view of Figure 3a;
[0022] Figure 4 is a cross-sectional view of a dynamic seal sleeve assembly of the invention;
[0023] Figure 5 is a cross-sectional view of an output shaft of a hydraulic impact power unit of the invention; and [0024] Figure 6 is a cross-sectional view of a self-oscillating jet spherical button of the invention.
[0025] In the drawings: 1-guide rail; 2-thrust cylinder; 3-hydraulic impact power unit;
4-drill rod; 5-drill bit; 6-dynamic seal sleeve assembly; 7-static seal transition sleeve; 8-circlip;
9-static seal ring; 10-dynamic seal ring; 11-drill rod support base; 3-1-output shaft of the hydraulic impact power unit; 4-1-shoulder I of the drill rod; 4-2-internal connection thread of drill rod; 4-3-circlip groove of the drill rod; 4-4-water channel inside the drill rod;
4-5-shoulder II of the drill rod; 4-6-external connection thread of the drill rod; 4-7-static seal ring groove of the drill rod; 5-1-mechanical spherical button; 5-2-debris guide slot; 5-3-self-oscillating jet spherical button; 5-4-internal connection thread of the drill bit; 5-5-water channel inside the drill bit; 5-6-circlip groove of the drill bit; 6-1-outer sleeve of the dynamic seal sleeve assembly; 6-2-inner sleeve of the dynamic seal sleeve assembly; 6-3-static end face seal ring; 6-4-high-pressure water inlet; 6-5-fastening screw; 3-1-1-dynamic seal ring groove of the output shaft; 3-1-2-water channel inside the output shaft; 3-1-3-external connection thread of the output shaft; 3-1-4-static seal ring groove of the output shaft;
5-3-1-alloy head of the jet spherical button; 5-3-2-body of the jet spherical button;
5-3-3-oscillation cavity of the jet spherical button; 5-3-4-tiny water channel I; 5-3-5 -tiny water channel II.
DESCRIPTION OF EMBODIMENTS
[0026] The invention is further described below with reference to the accompanying drawings and specific embodiments.
[0027] A rock breaking mechanism by combined pulsed jet and mechanical impact of the invention mainly includes a guide rail 1, a thrust cylinder 2, a hydraulic impact power unit 3, a drill rod 4, a drill bit 4, a dynamic seal sleeve assembly 6, static seal transition sleeves 7, circ lips 8, static seal rings 9, dynamic seal rings 10, and a drill rod support base 11. A cylinder body of the thrust cylinder 2 is hinged to the guide rail 1, a piston rod of the thrust cylinder 2 is hinged to a housing of the hydraulic impact power unit 3, the housing of the hydraulic impact power unit 3 is slidably mounted on the guide rail 1, one end of the drill rod 4 is connected to an output shaft 3-1of the hydraulic impact power unit (referred to simply as output shaft below) through an internal connection thread 4-2 of the drill rod and an external connection thread 3-1-3 of the output shaft, and the other end of the drill rod 4 is connected to the drill bit 5 through an external connection thread 4-6 of the drill rod and an internal connection thread 5-4 of the drill bit. An outer sleeve 6-1 of the dynamic seal sleeve assembly is screw-mounted on the housing of the hydraulic impact power unit 3, and the inner sleeve
5-3-3-oscillation cavity of the jet spherical button; 5-3-4-tiny water channel I; 5-3-5 -tiny water channel II.
DESCRIPTION OF EMBODIMENTS
[0026] The invention is further described below with reference to the accompanying drawings and specific embodiments.
[0027] A rock breaking mechanism by combined pulsed jet and mechanical impact of the invention mainly includes a guide rail 1, a thrust cylinder 2, a hydraulic impact power unit 3, a drill rod 4, a drill bit 4, a dynamic seal sleeve assembly 6, static seal transition sleeves 7, circ lips 8, static seal rings 9, dynamic seal rings 10, and a drill rod support base 11. A cylinder body of the thrust cylinder 2 is hinged to the guide rail 1, a piston rod of the thrust cylinder 2 is hinged to a housing of the hydraulic impact power unit 3, the housing of the hydraulic impact power unit 3 is slidably mounted on the guide rail 1, one end of the drill rod 4 is connected to an output shaft 3-1of the hydraulic impact power unit (referred to simply as output shaft below) through an internal connection thread 4-2 of the drill rod and an external connection thread 3-1-3 of the output shaft, and the other end of the drill rod 4 is connected to the drill bit 5 through an external connection thread 4-6 of the drill rod and an internal connection thread 5-4 of the drill bit. An outer sleeve 6-1 of the dynamic seal sleeve assembly is screw-mounted on the housing of the hydraulic impact power unit 3, and the inner sleeve
6-2 of the dynamic seal sleeve assembly is mounted on the outer sleeve 6-1 of the dynamic seal sleeve assembly through fastening screws 6-5. The outer sleeve 6-1 and inner sleeve 6-2 of the dynamic seal sleeve assembly are provided with a high-pressure water inlet 6-4 at corresponding positions. A static high-pressure water sealing is effected between the outer sleeve 6-1 and inner sleeve 6-2 of the dynamic seal sleeve assembly through static end face seal rings 6-3, and a dynamic high-pressure water sealing is effected between the high-pressure water inlet 6-4 of the dynamic seal sleeve assembly 6 and the water channel 3-1-2 inside the output shaft 3-1 through dynamic contact between the dynamic seal rings 10 fitted within the dynamic seal ring grooves 3-1-1 of the output shaft and an inner surface of the inner sleeve 6-2 of the dynamic seal sleeve assembly. The static seal transition sleeves 7 are fixedly mounted at the joint between the drill rod 4 and the output shaft 3-1 and the joint between the drill bit 5 and the drill rod 4 respectively through the circlips 8 fitted within the circlip groove 4-3 of the drill rod and the circlip groove 5-6 of the drill bit. A static high-pressure water sealing of the water channel 3-1-2 inside the output shaft 3-1 of the hydraulic impact power unit 3, the water channel 4-4 inside the drill rod, and the water channel 5-5 inside the drill bit is effected through static contact between the static seal rings 9 fitted within the static seal ring groove 3-1-4 of the output shaft 3-1 and the static seal ring groove 4-7 of the drill rod and inner surfaces of the static seal transition sleeves 7. Then high-pressure water is introduced into the jet-spherical-button oscillation cavity 5-3-3 in the self-oscillating jet spherical button 5-3 to generate a pulsed jet. When hydraulic fluid at a certain pressure is fed into the thrust cylinder 2 and the hydraulic impact power unit 3, the thrust cylinder 2 propels the hydraulic impact power unit 3, the drill rod 4, and the drill bit 5 as a whole, enabling the mechanic spherical buttons 5-1 mounted on the drill bit 5 to rotate and impact the rock so as to break it. Resulting rock debris is ejected through debris guide slots 5-2. When high-pressure water at a certain pressure is fed into the dynamic seal sleeve assembly 6, the high-pressure water passes through the water channel 3-1-2 inside the output shaft 3-1, the water channel 4-4 inside the drill rod, the water channel 5-5 inside the drill bit, and the self-oscillating jet spherical buttons 5-3 to generate a pulsed jet, so that the high-pressure pulsed jet and the mechanical spherical buttons 5-1 can jointly impact and break the rock, thereby increasing the rock breaking ability of mechanical impact and prolonging the service life of the mechanical spherical buttons 5-1. Upon completion of propulsion of one drill rod 4, the threaded connection between the output shaft 3-1 of the hydraulic power unit 3 and the drill rod 4 is released, and the piston rod of the thrust cylinder 2 is retracted to return the hydraulic impact power unit 3 to its initial position. Then another drill rod 4 of the same structure and size is connected. The piston rod of the thrust cylinder 2 is extended again to propel the hydraulic impact power unit 3, the drill rod 4, and the drill bit to complete another drilling cycle. After the rock drilling is completed, the drill rods 4 are recovered in a reverse sequence.
[0028] Operation principle: To break a rock using the rock breaking mechanism by combined pulsed jet and mechanical impact, a hydraulic pump system in the roadway supplies hydraulic fluid at a certain pressure to the thrust cylinder 2 and the hydraulic impact power unit 3, so that the piston rod of the thrust cylinder 2 is provided with a thrust force and a straight line speed and the output shaft 3-1 of the hydraulic impact power unit 3 is provided with a rotational torque and an intermittent impact force. The thrust force and straight line speed from the piston rod of the thrust cylinder 2 are transmitted through the housing and the output shaft 3-1 of the hydraulic impact power unit 3 and the drill rod 4 to the drill bit 5, so that the mechanical spherical buttons 5-1 on the drill bit contact and squeeze the rock. The rotational toque and intermittent impact force from the output shaft 3-1 of the hydraulic impact power unit 3 are transmitted through the drill rod 4 to the drill bit 5, so that the mechanical spherical buttons 5-1 on the drill bit 5 rotate and impact the rock to break it.
High-pressure water supplied from the high-pressure water pump passes through the high-pressure water inlet 6-4 of the dynamic seal sleeve assembly 6, then through the right-angled water channel inside the output shaft 3-1 of the hydraulic impact power unit 3, the water channel 4-4 inside the drill rod, the water channel 5-5 inside the drill bit, and the jet-spherical-button oscillation cavity 5-3-3 of the self-oscillating jet spherical button 5-3 sequentially to generate a high-speed pulsed jet. When the rock breaking mechanism is supplied with hydraulic fluid and high-pressure water at a certain pressure at the same time and given appropriate parameters, the mechanical spherical buttons 5-1 on the drill bit 5 can operate in combination with the pulsed jet generated by the self-oscillating jet spherical buttons 5-3 to break the rock, thereby improving the ability of impact rock breaking of the mechanical spherical buttons 5-1, prolonging the service life of the mechanical spherical buttons 5-1, reducing the concentration of dust generated from the broken rock, and improving rock drilling efficiency of the rock breaking mechanism.
[0029] It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the invention, and such improvements and modifications shall fall within the protection scope of the invention. The components that are not clearly defined in this embodiment can be implemented by the prior art.
- io -
[0028] Operation principle: To break a rock using the rock breaking mechanism by combined pulsed jet and mechanical impact, a hydraulic pump system in the roadway supplies hydraulic fluid at a certain pressure to the thrust cylinder 2 and the hydraulic impact power unit 3, so that the piston rod of the thrust cylinder 2 is provided with a thrust force and a straight line speed and the output shaft 3-1 of the hydraulic impact power unit 3 is provided with a rotational torque and an intermittent impact force. The thrust force and straight line speed from the piston rod of the thrust cylinder 2 are transmitted through the housing and the output shaft 3-1 of the hydraulic impact power unit 3 and the drill rod 4 to the drill bit 5, so that the mechanical spherical buttons 5-1 on the drill bit contact and squeeze the rock. The rotational toque and intermittent impact force from the output shaft 3-1 of the hydraulic impact power unit 3 are transmitted through the drill rod 4 to the drill bit 5, so that the mechanical spherical buttons 5-1 on the drill bit 5 rotate and impact the rock to break it.
High-pressure water supplied from the high-pressure water pump passes through the high-pressure water inlet 6-4 of the dynamic seal sleeve assembly 6, then through the right-angled water channel inside the output shaft 3-1 of the hydraulic impact power unit 3, the water channel 4-4 inside the drill rod, the water channel 5-5 inside the drill bit, and the jet-spherical-button oscillation cavity 5-3-3 of the self-oscillating jet spherical button 5-3 sequentially to generate a high-speed pulsed jet. When the rock breaking mechanism is supplied with hydraulic fluid and high-pressure water at a certain pressure at the same time and given appropriate parameters, the mechanical spherical buttons 5-1 on the drill bit 5 can operate in combination with the pulsed jet generated by the self-oscillating jet spherical buttons 5-3 to break the rock, thereby improving the ability of impact rock breaking of the mechanical spherical buttons 5-1, prolonging the service life of the mechanical spherical buttons 5-1, reducing the concentration of dust generated from the broken rock, and improving rock drilling efficiency of the rock breaking mechanism.
[0029] It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the invention, and such improvements and modifications shall fall within the protection scope of the invention. The components that are not clearly defined in this embodiment can be implemented by the prior art.
- io -
Claims (8)
1. A rock breaking mechanism by combined pulsed jet and mechanical impact, comprising: a guide rail, a thrust cylinder, a hydraulic impact power unit comprising an output shaft having static seal ring grooves and dynamic seal ring grooves, a drill rod having a static seal ring groove, a drill bit, a dynamic seal sleeve assembly, static seal transition sleeves, circlips, static seal rings fitted within the static seal ring grooves of the output shaft and within the static seal ring groove of the drill rod, dynamic seal rings fitted within the dynamic seal ring grooves of the output shaft, and a drill rod support base, wherein the drill rod support base is fixed on the guide rail, a cylinder body of the thrust cylinder is hinged to the guide rail, a piston rod of the thrust cylinder is hinged to a housing of the hydraulic impact power unit, the hydraulic impact power unit is slidably mounted on the guide rail, the output shaft of the hydraulic impact power unit is connected to one end of the drill rod through a threaded connection, the other end of the drill rod is connected to the drill bit through a threaded connection, the drill rod passes through a bore in the drill rod support base, the dynamic seal sleeve assembly is screw-fixed on the housing of the hydraulic impact power unit, a high-pressure water inlet of the dynamic seal sleeve assembly, a water channel inside the output shaft of the hydraulic impact power unit, a water channel inside the drill rod, a water channel inside the drill bit, and a jet-spherical-button oscillation cavity in each of self-oscillating jet spherical buttons are sequentially connected, and the static seal transition sleeves are fixedly mounted via the circlips inside the ends of the drill rod that connected respectively to the output shaft of the hydraulic impact power unit and the drill bit.
2. The rock breaking mechanism of claim I, characterized in that, an outer sleeve of the dynamic seal sleeve assembly is screw-fixed on the housing of the hydraulic impact power unit, an inner sleeve of the dynamic seal sleeve assembly is fixed on the outer sleeve of the dynamic seal sleeve assembly through fastening screws, the outer sleeve and inner sleeve of the dynamic seal sleeve assembly are provided with a high-pressure water inlet at corresponding positions, a static high-pressure water sealing is effected between the outer sleeve and inner sleeve of the dynamic seal sleeve assembly through static end face seal rings, and an inner surface of the inner sleeve of the dynamic seal sleeve assembly is hard chrome plated.
3. The rock breaking mechanism of claim 1, characterized in that, the output shaft of the hydraulic impact power unit is provided with an internal right-angled water channel and a plurality of output-shaft dynamic seal ring grooves.
4. The rock breaking mechanism of claim 1, characterized in that, a first drill rod shoulder and a second drill rod shoulder are machined on the drill rod, and outer diameters of the first drill rod shoulder and the second drill rod shoulder respectively match outer diameters of end faces adjacent to an output-shaft external connection thread of the output shaft of the hydraulic impact power unit and at an internal connection thread of the drill bit.
5. The rock breaking mechanism of claim 1, characterized in that, a plurality of mechanical spherical buttons and the self-oscillating jet spherical buttons are regularly embedded in the drill bit, tips of the self-oscillating jet spherical buttons are set back from tips of the mechanical spherical buttons by a distance, and a plurality of debris guide slots are machined on the perimeter of a body of the drill bit.
6. The rock breaking mechanism of claim 1, characterized in that, a jet-spherical-button alloy head of each self-oscillating jet spherical button is embedded in a body of the jet spherical button, a first water channel is machined inside the jet-spherical-button alloy head, a second water channel is machined at the bottom of the body of the jet spherical button, a jet-spherical-button oscillation cavity is formed inside the jet-spherical-button alloy head and the body of the jet spherical button, the first water channel and the second water channel have a diameter of 1mm-2mm, and an included angle between the first water channel and the center line of the jet-spherical-button alloy head is in a range of 10°-15°.
7. The rock breaking mechanism of claim 1, characterized in that, the static seal rings and the static end face seal rings are O-rings made of nitrile rubber, and the dynamic seal rings are O-rings made of polytetrafluoroethylene.
8. The rock breaking mechanism of claim 1, characterized in that, inner surfaces of the static seal transition sleeves are hard chrome plated.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610846699.2 | 2016-09-23 | ||
| CN201610846699.2A CN106246175B (en) | 2016-09-23 | 2016-09-23 | A kind of pulsing jet and mechanical shock combined-breaking rock mechanism |
| PCT/CN2017/080270 WO2018054041A1 (en) | 2016-09-23 | 2017-04-12 | Pulse jet flow and mechanical shock joint rock-breaking mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA3013099A1 CA3013099A1 (en) | 2018-03-29 |
| CA3013099C true CA3013099C (en) | 2019-08-27 |
Family
ID=57611154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3013099A Expired - Fee Related CA3013099C (en) | 2016-09-23 | 2017-04-12 | Rock breaking mechanism by combined pulsed jet and mechanical impact |
Country Status (5)
| Country | Link |
|---|---|
| CN (1) | CN106246175B (en) |
| AU (1) | AU2017329832B2 (en) |
| CA (1) | CA3013099C (en) |
| RU (1) | RU2683606C1 (en) |
| WO (1) | WO2018054041A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246175B (en) * | 2016-09-23 | 2018-06-15 | 中国矿业大学 | A kind of pulsing jet and mechanical shock combined-breaking rock mechanism |
| CN107083922B (en) * | 2017-06-09 | 2019-01-11 | 中国矿业大学 | A kind of pneumatic self-advancing type super-high pressure pulse jet stream auxiliary impact broken rock equipment |
| CN109236176B (en) * | 2018-11-23 | 2023-12-15 | 湖南湘江水力环保设备科技有限公司 | High-pressure water jet rock drilling machine |
| CN111520156B (en) * | 2020-04-30 | 2021-01-29 | 中国矿业大学 | Energy-gathering jet rock breaking and fluidization carrying system and method |
| CN112554785A (en) * | 2020-11-25 | 2021-03-26 | 重庆勤牛工程机械有限责任公司 | Anchoring drilling machine |
| CN114294001B (en) * | 2021-12-26 | 2024-06-21 | 中国平煤神马控股集团有限公司 | Ultrasonic vibration and ultrasonic high-pressure pulse jet comprehensive rock drilling device and use method thereof |
| CN116067803B (en) * | 2023-02-16 | 2023-10-13 | 广西大学 | True three-way dynamic and static combined shearing experimental equipment and method under high-temperature high-permeability chemical coupling |
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| SU420784A1 (en) * | 1970-09-01 | 1974-03-25 | институт добычи угл гидравлическим способом | |
| DE2713781C3 (en) * | 1977-03-29 | 1983-02-24 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen | Process and device for the combined hydraulic-mechanical underground extraction of mainly hard mineral raw materials |
| SU735765A1 (en) * | 1977-04-13 | 1980-05-25 | Донецкий Ордена Трудового Красного Знамени Политехнический Институт | Hydraulic pulsator |
| SU676732A1 (en) * | 1978-01-23 | 1979-07-30 | Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Добычи Угля Гидравлическим Способом "Вниигидроуголь" | Mechanical-hydraulic cutter-loader |
| US4348058A (en) * | 1980-04-01 | 1982-09-07 | Slurry Mining Engineering Inc. | Method and apparatus for slurry borehole mining |
| SU1052658A1 (en) * | 1981-06-16 | 1983-11-07 | Всесоюзный научно-исследовательский и проектно-конструкторский институт добычи угля гидравлическим способом | Hydraulic monitor unit |
| SU1578328A1 (en) * | 1988-08-08 | 1990-07-15 | Украинский Научно-Исследовательский И Проектно-Конструкторский Институт Гидравлической Добычи Угля | Method and apparatus for hydraulic drilling boreholes on steep outburst-prone seam liable to pouring out |
| RU2301337C1 (en) * | 2006-01-26 | 2007-06-20 | Государственное образовательное учреждение высшего профессионального образования Томский политехнический университет | Device for well hydro-extraction of solid mineral resources |
| CN103470264A (en) * | 2013-09-16 | 2013-12-25 | 金陵科技学院 | Water jet cutter |
| CN103696686A (en) * | 2013-12-09 | 2014-04-02 | 吉林大学 | Jet-type explosive pressure pulse anti-drag drilling tool |
| RU2542016C1 (en) * | 2014-02-07 | 2015-02-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Кубанский государственный технологический университет" (ФГБОУ ВПО "КубГТУ") | Method of well bore zone treatment for productive formation |
| CN105317378A (en) * | 2014-06-08 | 2016-02-10 | 符祥怡 | Water pressure well-drilling drill bit |
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| CN104863506B (en) * | 2015-04-21 | 2016-03-09 | 中国石油大学(华东) | A kind of jet temperature fracturing device |
| CN105275402B (en) * | 2015-11-12 | 2018-01-30 | 中国石油大学(华东) | Particle stream flow rock fracture in dynamic indentation drill bit |
| CN106246175B (en) * | 2016-09-23 | 2018-06-15 | 中国矿业大学 | A kind of pulsing jet and mechanical shock combined-breaking rock mechanism |
-
2016
- 2016-09-23 CN CN201610846699.2A patent/CN106246175B/en active Active
-
2017
- 2017-04-12 WO PCT/CN2017/080270 patent/WO2018054041A1/en active Application Filing
- 2017-04-12 CA CA3013099A patent/CA3013099C/en not_active Expired - Fee Related
- 2017-04-12 RU RU2018132250A patent/RU2683606C1/en not_active IP Right Cessation
- 2017-04-12 AU AU2017329832A patent/AU2017329832B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| AU2017329832A1 (en) | 2018-08-16 |
| WO2018054041A1 (en) | 2018-03-29 |
| CN106246175B (en) | 2018-06-15 |
| CN106246175A (en) | 2016-12-21 |
| CA3013099A1 (en) | 2018-03-29 |
| RU2683606C1 (en) | 2019-03-29 |
| AU2017329832B2 (en) | 2019-03-14 |
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