CN108625770B - Rotatable impact crushing power head and application method thereof - Google Patents
Rotatable impact crushing power head and application method thereof Download PDFInfo
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- CN108625770B CN108625770B CN201810573175.XA CN201810573175A CN108625770B CN 108625770 B CN108625770 B CN 108625770B CN 201810573175 A CN201810573175 A CN 201810573175A CN 108625770 B CN108625770 B CN 108625770B
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- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000004888 barrier function Effects 0.000 claims abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 42
- 229910052757 nitrogen Inorganic materials 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002689 soil Substances 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 230000003116 impacting effect Effects 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 12
- 244000309464 bull Species 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B6/00—Drives for drilling with combined rotary and percussive action
- E21B6/02—Drives for drilling with combined rotary and percussive action the rotation being continuous
- E21B6/04—Separate drives for percussion and rotation
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a rotatable impact crushing power head and a use method thereof, wherein the rotatable impact crushing power head comprises a rotary crushing part, a driving part and a crushing hammer part; the rotary crushing part comprises a shell, a drill rod sleeved in the shell, and a guide sleeve sleeved on the drill rod through an internal spline, wherein the front end of the drill rod penetrates out of the shell; the guide sleeve is rotationally connected in the shell through a support bearing sleeved on the guide sleeve; the driving part drives the drill rod to rotate around the circumferential direction of the drill rod by driving the guide sleeve to rotate; the breaking hammer drives the drill rod to push forwards to impact the hard barrier. The crushing power head has the functions of rotating and impacting, and can crush hard barriers stably, and has high working efficiency and long service life.
Description
Technical Field
The invention relates to a rotatable impact crushing power head and a use method thereof, belonging to the field of engineering machinery.
Background
The engineering driller power head is used as a core component of the driller and has the main functions of transmitting the torque and the rotating speed required by rotation to the drill bit so as to realize continuous rock breaking and extended drilling depth of the drill bit. Recently, with the great development of construction projects such as domestic railways, highway bridges, high-rise buildings and the like, engineering drillers are used more frequently, and have higher requirements on the stability and the working quality of the drillers. The improved innovation of the power head serving as the core component of the drilling machine can well improve the working performance of the drilling machine, and compared with the traditional mechanical power head driven by a motor, the hydraulic power head has more advantages.
The Chinese patent with the publication number CN201288500Y discloses a rotary drilling hydraulic power head with a vibrator, wherein the hydraulic power head is composed of a hydraulic motor, a speed reducer and a rotating shaft, the upper part of the hydraulic power head is provided with the hydraulic vibrator, an oil inlet pipe, an oil return pipe and an oil drain recovery pipe of the hydraulic motor of the hydraulic power head are communicated with an oil tank on a main body, the oil inlet pipe of the hydraulic vibrator is communicated with the oil inlet pipe of the hydraulic motor through a control valve, and the oil return pipe of the hydraulic power head is communicated with the oil return pipe of the hydraulic motor through a one-way valve. The problems of the method are as follows: when the power head encounters a hard obstacle, the resistance that the hydraulic motor needs to overcome is very large, the working efficiency is reduced, and the service lives of the hydraulic motor and the hydraulic power head are reduced for a long time.
Disclosure of Invention
In order to solve the technical problems, the invention provides a rotatable impact crushing power head and a use method thereof, wherein the crushing power head has the functions of rotating and impacting at the same time, can crush hard barriers stably, and has high working efficiency and long service life.
The technical scheme of the invention is as follows:
a rotatable impact crushing power head comprises a rotary crushing part, a driving part and a crushing hammer part; the rotary crushing part comprises a shell, a drill rod sleeved in the shell, and a guide sleeve sleeved on the drill rod through an internal spline, wherein the front end of the drill rod penetrates out of the shell; the guide sleeve is rotationally connected in the shell through a support bearing sleeved on the guide sleeve; the driving part drives the drill rod to rotate around the circumferential direction of the drill rod by driving the guide sleeve to rotate; the breaking hammer drives the drill rod to push forwards to impact the hard barrier.
The driving part comprises a large gear sleeved on the guide sleeve through an internal spline, small gears respectively arranged on two sides of the large gear and meshed with the large gear, and two hydraulic motors respectively horizontally fixed on two sides of the shell; the rotating shafts of the two hydraulic motors are respectively and fixedly connected with the middle parts of the two pinions.
The breaking hammer comprises a hydraulic cylinder, a nitrogen chamber and an energy accumulator for buffering pressure and vibration in a hydraulic circuit, wherein the rear end of a drill rod is abutted against the front end of a piston rod in the hydraulic cylinder, the piston on the piston rod divides the hydraulic cylinder into a front cavity and a rear cavity, the nitrogen chamber is arranged at the rear part of the hydraulic cylinder, and the rear end of the piston rod stretches into the nitrogen chamber; the peripheral surface of the rear end of the piston rod is sealed with the opening of the nitrogen chamber; the top of the hydraulic cylinder is provided with a reversing three-way valve; the reversing three-way valve controls the rear cavity to be connected or disconnected with high-pressure oil, so that the reciprocating motion of the piston rod is realized.
The guide sleeve comprises a first guide sleeve and a second guide sleeve which are arranged front and back; the first guide sleeve comprises a front cylinder and a rear cylinder which are coaxially arranged front and back; the inner diameter of the rear cylinder is larger than that of the front cylinder, the rear end of the front cylinder is sleeved and fixed in the front end of the rear cylinder, the outer wall of the front end of the second guide sleeve is contracted inwards and sleeved in the rear cylinder, and a stop block ring is arranged on the front end face of the second guide sleeve positioned in the rear cylinder; the stop block ring is sleeved on the drill rod; the large gear is sleeved at the joint of the rear cylinder and the second guide sleeve.
Wherein, the drill rod periphery that is located the uide bushing front portion is fixed to be equipped with the spacing boss that the restriction drill rod passed out the casing.
Wherein, the uide bushing overcoat is equipped with two thrust bearing, thrust bearing's outer wall and shells inner wall fixed connection, and two thrust bearing overlap respectively and locate the outer lateral wall of front cylinder lateral wall second uide bushing lateral wall.
The number of the support bearings is two, and the support bearings are respectively fixedly sleeved on the outer side wall of the first guide sleeve and the outer side wall of the second guide sleeve.
The rotary crushing part, the driving part and the lower end face of the breaking hammer part are fixed on a horizontal connecting seat; a plurality of connecting joints are arranged on the connecting seat.
Wherein, the front end of the shell is provided with a water blocking shaft sleeve sleeved on the drill rod; the rear end face of the water retaining shaft sleeve is fixedly connected with the front end face of the shell.
The application method of the rotatable impact crushing power head comprises the following steps of:
and (3) rotary crushing: the two hydraulic motors work, the pinion rotates, and the rotation drives the bull gear to rotate; the large gear drives the guide sleeve to rotate, and the guide sleeve drives the drill rod to rotate; meanwhile, the moving device of the host drives the crushing power head to integrally move forwards, and the drill rod advances to drill holes;
rotation and impact crushing: when the head of the drill rod forwards encounters a hard barrier or a thick soil layer during the rotary drilling; the drill rod moves backwards, and the oil pump is started to work at the moment; simultaneously, the hydraulic motor continues to work; the front cavity is filled with oil; the rear cavity is filled with oil, the piston rod moves backwards, the pressure of the nitrogen chamber is compressed, the pressure of the nitrogen chamber is increased, then the reversing three-way valve is used for reversing, the rear cavity is filled with oil, the piston rod is rapidly pushed forwards under the action of oil pressure and air pressure, the drill rod is pushed forwards in a high-speed rotation state, one-time impact is completed, and the head of the drill rod can rapidly break through an obstacle;
resistance cancellation: the head of the drill rod is subjected to the resistance of the rock layer or the soil layer, the acting force is transmitted to the stop ring through the drill rod, the stop ring transmits the acting force to the second guide sleeve, the second guide sleeve transmits the acting force to the thrust bearing again, and the shell digests the resistance of the drill bit.
The invention has the following beneficial effects:
1. the rotary crushing part and the crushing hammer part are arranged, the crushing power head is provided with two crushing modes of rotary drilling and hydraulic pushing drilling, hard barriers can be crushed stably, the working efficiency is high, and the service life is long.
2. According to the rotary crushing device, the pinions arranged on the two sides of the bull gear drive the bull gear to rotate, and the symmetrical arrangement enables the stress of the front half part of the rotary crushing part to be more uniform.
3. According to the invention, the first guide sleeve, the second guide sleeve, the stop block ring and the thrust bearing are arranged, so that the resistance of the shell body on the digestion drill rod can be provided, the working efficiency is improved, and the service life is prolonged.
4. The invention is provided with the water retaining shaft sleeve, so that water flow can be injected into the head of the drill rod during drilling, the drill rod rotating at high speed can be cooled, and dust can be effectively reduced.
5. The invention is provided with the connecting seat and the connecting joint, so that the crushing power head is convenient to connect with the moving device.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic top view of FIG. 1 of the present invention;
FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2 in accordance with the present invention;
FIG. 4 is a schematic diagram of the meshing of a large gear and a small gear of the present invention;
fig. 5 is a partially enlarged schematic view at B of fig. 3.
FIG. 6 is a schematic view of the breaking hammer of the present invention;
the reference numerals in the drawings are as follows:
1. rotating the crushing portion; 11. a housing; 12. a drill rod; 13. a guide sleeve; 131. a first guide sleeve; 132. a second guide sleeve; 133. a front barrel; 134. a rear barrel; 135. a stop ring; 14. a support bearing; 2. a driving section; 21. a large gear; 22. a pinion gear; 23. a hydraulic motor; 3. a breaking hammer; 31. a hydraulic cylinder; 32. a nitrogen chamber; 321. an energy storage; 33. a piston rod; 330. a piston; 34. a front cavity; 35. a rear cavity; 36. a reversing three-way valve; 4. a thrust bearing; 5. a connecting seat; 6. a connection joint; 7. a water blocking shaft sleeve; 81. a limit boss; 83. an oil pump.
Detailed Description
The invention will now be described in detail with reference to the drawings and to specific embodiments.
In this embodiment, "front" refers to the E direction in fig. 1 (i.e., the direction in which the shank 12 extends out of the housing 11), and "rear" refers to the F direction in fig. 1 (i.e., the direction in which the nitrogen chamber 32 is located).
Referring to fig. 1 to 5, a rotatable impact crushing power head includes a rotary crushing portion 1, a driving portion 2, and a crushing hammer portion 3; the rotary crushing part 1 comprises a shell 11, a drill rod 12 sleeved in the shell 11, and a guide sleeve 13 sleeved on the drill rod 12 through an internal spline, wherein the front end of the drill rod 12 penetrates out of the shell 11; the drill rod 12 can move within a certain range along the axial direction of the guide sleeve 13; the guide sleeve 13 is rotatably connected in the shell 11 through a support bearing 14 sleeved on the guide sleeve; a limit boss 81 for limiting the length of the drill rod 12 penetrating out of the shell 11 is fixedly arranged on the periphery of the drill rod 12 positioned at the front part of the guide sleeve 13; the driving part 2 drives the drill rod 12 to rotate around the circumferential direction of the drill rod 12 by driving the guide sleeve 13 to rotate; the breaking hammer 3 drives the drill rod 12 to push out the impact hard barrier forwards; the driving part 2 comprises a large gear 21 sleeved on the guide sleeve 13 through an internal spline, small gears 22 respectively arranged on two sides of the large gear 21 and meshed with the large gear 21, and two hydraulic motors 23 respectively horizontally fixed on two sides of the shell 11; the axial length of the pinion gear 22 is greater than the axial length of the large gear 21; the large gear 21 has a certain axial movement space under the condition that the mutual meshing of the large gear 21 and the small gear 22 is not influenced; the rotating shafts of the two hydraulic motors 23 are fixedly connected with the middle parts of the two pinions 22 respectively; the breaking hammer 3 comprises a hydraulic cylinder 31, a nitrogen chamber 32 and an energy accumulator 321 for buffering pressure and vibration in a hydraulic circuit, the rear end of a drill rod 12 is abutted against the front end of a piston rod 33 in the hydraulic cylinder 31, a piston 330 on the piston rod 33 divides the interior of the hydraulic cylinder 31 into a front cavity 34 and a rear cavity 35, the nitrogen chamber 32 is arranged at the rear part of the hydraulic cylinder 31, and the rear end of the piston rod 33 extends into the nitrogen chamber 32; the rear end peripheral surface of the piston rod 33 is hermetically arranged with the opening of the nitrogen chamber 32; the top of the hydraulic cylinder 31 is provided with a reversing three-way valve 36; the reversing three-way valve 36 controls the rear cavity 35 to switch on or off high-pressure oil, so that the reciprocating motion of the piston rod 33 is realized.
Referring to fig. 6, the breaking hammer 3 works as follows: when the oil pump 83 works and the left and right positions of the reversing three-way valve 36 are connected, the front cavity 34 is communicated with high-pressure oil, the rear cavity 35 is connected with oil return, the piston 330 returns under the action of the pressure oil in the front cavity 34, when the piston returns to a certain position, the return is fed back to the reversing three-way valve 36, the reversing three-way valve 36 is connected with the left position, the rear cavity 35 is connected with high-pressure oil, at the moment, the front cavity 34 and the rear cavity 35 are both high-pressure oil, but the rear end area is larger than the front end area of the piston 330, and the piston 330 is in stroke. When the piston rod 33 extends, the reversing three-way valve 36 returns, and the hydraulic cylinder 31 returns.
Referring to fig. 3 and 5, the guide housing 13 includes a first guide housing 131 and a second guide housing 132 disposed one behind the other; the first guide sleeve 131 includes a front barrel 133 and a rear barrel 134 coaxially disposed front and rear; the inner diameter of the rear barrel 134 is larger than that of the front barrel 133, the rear end of the front barrel 133 is sleeved and fixed in the front end of the rear barrel 134, the front end outer wall of the second guide sleeve 132 is contracted inwards and sleeved in the rear barrel 134, and a stop ring 135 is arranged on the front end face of the second guide sleeve 132 positioned in the rear barrel 134; the stop ring 135 is sleeved on the drill rod 12; the large gear 21 is sleeved at the joint of the rear cylinder 134 and the second guide sleeve 132.
Referring to fig. 3, the guiding sleeve 13 is sleeved with two thrust bearings 4, the outer wall of the thrust bearing 4 is fixedly connected with the inner wall of the housing 11, and the two thrust bearings 4 are respectively sleeved on the outer side wall of the second guiding sleeve 132 of the outer side wall of the front barrel 133. The thrust bearing 4 is arranged, so that the axial load can be better borne, and the service life of the device is prolonged.
Referring to fig. 3, the number of the support bearings 14 is two, and the support bearings are respectively fixedly sleeved on the outer side wall of the first guide sleeve 131 and the outer side wall of the second guide sleeve 132.
Referring to fig. 1-4, the outer wall of the head at the front end of the drill rod 12 is provided with external threads.
Referring to fig. 1-4, the lower end surfaces of the rotary crushing part 1, the driving part 2 and the breaking hammer part 3 are fixed on a horizontal connecting seat 5; the connecting seat 5 is provided with a plurality of connecting joints 6. The crushing power head is convenient to be connected with the moving device.
Referring to fig. 1, the front end of the shell 11 is provided with a water blocking shaft sleeve 7 sleeved on the drill rod 12; the rear end face of the water retaining shaft sleeve 7 is fixedly connected with the front end face of the shell 11. Water flow can be injected into the head of the drill rod 12 during drilling, so that the head of the drill rod 12 rotating at a high speed can be cooled, and dust can be effectively reduced.
The application method of the rotatable impact crushing power head comprises the following steps of:
and (3) rotary drilling: the two hydraulic motors 23 work, the pinion gear 22 rotates, and the rotation drives the large gear 21 to rotate; the large gear 21 drives the guide sleeve 13 to rotate, and the guide sleeve 13 drives the drill rod 12 to rotate; meanwhile, the moving device of the host drives the whole crushing power head to move forwards, and the drill rod 12 advances to drill holes;
rotary drill and crushing: when the head of the drill rod 12 forwards encounters a hard barrier or a thick soil layer during the rotary drilling; the drill rod 12 moves backwards, and the oil pump 83 is started to work manually at the moment; the hydraulic motor 23 continues to operate at the same time; the front cavity 34 is filled with oil; the rear cavity 35 is used for discharging oil, the piston rod 33 moves backwards, the pressure of the nitrogen chamber 32 is compressed, so that the pressure of the nitrogen chamber 32 is increased, then the reversing three-way valve 36 is used for reversing, the rear cavity 35 is used for feeding oil, the piston rod 33 is rapidly pushed forwards under the action of oil pressure and air pressure, the drill rod 12 is pushed forwards in a high-speed rotation state, one impact is completed, and the head of the drill rod 12 can rapidly break through an obstacle; meanwhile, the energy accumulator 321 is filled with nitrogen, so that the rest energy and the energy of the recoil of the piston rod 33 are stored in the previous striking process, and the energy is released in the second striking process, so that the striking capacity is improved;
resistance cancellation: the head of the drill rod 12 receives the resistance of the rock layer or the soil layer, the drill rod 12 transmits the acting force to the stop ring 135, the stop ring 135 transmits the acting force to the first guide sleeve 131 and the second guide sleeve 132, the first guide sleeve 131 and the second guide sleeve 132 transmit the acting force to the thrust bearing 4 again, and the shell 11 digests the resistance received by the head of the drill rod 12.
The rotary drilling, rotary impact crushing and resistance elimination are functions simultaneously provided in the normal working state of the invention, and are not independent working modes.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (6)
1. A rotatable impact crushing power head, characterized in that: comprises a rotary crushing part (1), a driving part (2) and a crushing hammer part (3); the rotary crushing part (1) comprises a shell (11), a drill rod (12) sleeved in the shell (11) and the front end of which penetrates out of the shell (11), and a guide sleeve (13) sleeved on the drill rod (12) through an internal spline, wherein the drill rod (12) can move in a certain range along the axial direction of the guide sleeve (13); the guide sleeve (13) is rotationally connected in the shell (11) through a support bearing (14) sleeved on the guide sleeve; the driving part (2) drives the drill rod (12) to rotate around the circumferential direction of the drill rod through driving the guide sleeve (13) to rotate; the breaking hammer part (3) drives the drill rod (12) to push out the impact hard barrier forwards;
a limiting boss (81) for limiting the drill rod (12) to penetrate out of the shell (11) is fixedly arranged on the periphery of the drill rod (12) positioned at the front part of the guide sleeve (13);
the driving part (2) comprises a large gear (21) sleeved on the guide sleeve (13) through an internal spline, small gears (22) respectively arranged at two sides of the large gear (21) and meshed with the large gear (21), and two hydraulic motors (23) respectively horizontally fixed at two sides of the shell (11); the rotating shafts of the two hydraulic motors (23) are fixedly connected with the middle parts of the two pinions (22) respectively;
the guide sleeve (13) comprises a first guide sleeve (131) and a second guide sleeve (132) which are arranged front and back; the first guide sleeve (131) comprises a front cylinder (133) and a rear cylinder (134) which are coaxially arranged front and back; the inner diameter of the rear cylinder (134) is larger than that of the front cylinder (133), the rear end of the front cylinder (133) is sleeved and fixed in the front end of the rear cylinder (134), the outer wall of the front end of the second guide sleeve (132) is contracted inwards and sleeved in the rear cylinder (134), and a stop ring (135) is arranged on the front end face of the second guide sleeve (132) positioned in the rear cylinder (134); the stop ring (135) is sleeved on the drill rod (12); the large gear (21) is sleeved at the joint of the rear cylinder (134) and the second guide sleeve (132);
two thrust bearings (4) are sleeved outside the guide sleeve (13), the outer wall of each thrust bearing (4) is fixedly connected with the inner wall of the shell (11), and the two thrust bearings (4) are respectively sleeved on the outer side wall of the second guide sleeve (132) on the outer side wall of the front cylinder (133).
2. The rotatable impact crushing power head of claim 1, wherein: the breaking hammer part (3) comprises a hydraulic cylinder (31), a nitrogen chamber (32) and an energy accumulator (321) for buffering pressure and vibration in a hydraulic circuit, the rear end of a drill rod (12) is abutted against the front end of a piston rod (33) in the hydraulic cylinder (31), a piston (330) on the piston rod (33) divides the interior of the hydraulic cylinder (31) into a front cavity (34) and a rear cavity (35), the nitrogen chamber (32) is arranged at the rear part of the hydraulic cylinder (31), and the rear end of the piston rod (33) extends into the nitrogen chamber (32); the periphery of the rear end of the piston rod (33) is hermetically arranged with the opening of the nitrogen chamber (32); the top of the hydraulic cylinder (31) is provided with a reversing three-way valve (36); the reversing three-way valve (36) controls the rear cavity (35) to be connected or disconnected with high-pressure oil, so that the reciprocating motion of the piston rod (33) is realized.
3. The rotatable impact crushing power head of claim 1, wherein: the number of the support bearings (14) is two, and the support bearings are fixedly sleeved on the outer side wall of the first guide sleeve (131) and the outer side wall of the second guide sleeve (132) respectively.
4. The rotatable impact crushing power head of claim 1, wherein: the lower end surfaces of the rotary crushing part (1), the driving part (2) and the breaking hammer part (3) are fixed on a horizontal connecting seat (5); a plurality of connecting joints (6) are arranged on the connecting seat (5).
5. The rotatable impact crushing power head of claim 1, wherein: the front end of the shell (11) is provided with a water blocking shaft sleeve (7) sleeved on the drill rod (12); the rear end face of the water retaining shaft sleeve (7) is fixedly connected with the front end face of the shell (11).
6. A method of using a rotatable impact crushing power head comprising the crushing power head of claim 4, wherein: the implementation is as follows:
and (3) rotary crushing: the two hydraulic motors (23) work, the pinion (22) rotates, and the rotation drives the large gear (21) to rotate; the large gear (21) drives the guide sleeve (13) to rotate, and the guide sleeve (13) drives the drill rod (12) to rotate; meanwhile, the moving device of the host drives the whole crushing power head to move forwards, and the drill rod (12) advances to drill holes;
rotation and impact crushing: during rotary crushing, the head of the drill rod (12) is in front of a hard barrier or a thick soil layer; the drill rod (12) moves backwards, and the oil pump (83) is started to work at the moment; simultaneously, the hydraulic motor (23) continues to work; the front cavity (34) is filled with oil; the rear cavity (35) is used for discharging oil, the piston rod (33) moves backwards, the pressure of the nitrogen chamber (32) is compressed, so that the pressure of the nitrogen chamber (32) is increased, then the reversing three-way valve (36) is used for reversing, the rear cavity (35) is used for feeding oil, the piston rod (33) is rapidly pushed forwards under the action of oil pressure and air pressure, the drill rod (12) is enabled to be pushed forwards in a high-speed rotation state, one-time impact is completed, and the head of the drill rod (12) can rapidly break through an obstacle;
resistance cancellation: the head of the drill rod (12) receives the resistance of the rock layer or the soil layer, the acting force is transmitted to the stop ring (135) through the drill rod (12), the acting force is transmitted to the second guide sleeve (132) through the stop ring (135), the acting force is transmitted to the thrust bearing (4) again through the second guide sleeve (132), and the resistance of the drill bit is digested by the shell (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810573175.XA CN108625770B (en) | 2018-06-06 | 2018-06-06 | Rotatable impact crushing power head and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810573175.XA CN108625770B (en) | 2018-06-06 | 2018-06-06 | Rotatable impact crushing power head and application method thereof |
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| CN108625770A CN108625770A (en) | 2018-10-09 |
| CN108625770B true CN108625770B (en) | 2024-03-22 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112610178B (en) * | 2020-12-15 | 2023-02-21 | 江苏煤炭地质机械研制中心 | Environment sampling power head and environment sampling method |
| CN114934558B (en) * | 2022-04-01 | 2023-06-09 | 徐州巴特工程机械股份有限公司 | Full hydraulic rotary impact crusher |
| CN114622615A (en) * | 2022-04-01 | 2022-06-14 | 徐州巴特工程机械股份有限公司 | Impact-rotary type crushing machine |
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| CN104532896A (en) * | 2014-12-23 | 2015-04-22 | 南京工业职业技术学院 | Rotary hydraulic and pneumatic mixed impact breaking hammer |
| CN104878794A (en) * | 2015-05-11 | 2015-09-02 | 创银机械技术(上海)有限公司 | Vibratory hammer |
| CN106837164A (en) * | 2017-04-06 | 2017-06-13 | 张家港保税区永大机械有限公司 | Hydraulic shock unit head |
| CN208280894U (en) * | 2018-06-06 | 2018-12-25 | 福建亿钻机械有限公司 | A kind of crushing power head of rotatable impact |
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| CN108625770A (en) | 2018-10-09 |
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