CN112983300A - Double-chuck hydraulic power head and application thereof - Google Patents
Double-chuck hydraulic power head and application thereof Download PDFInfo
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- CN112983300A CN112983300A CN202110292575.5A CN202110292575A CN112983300A CN 112983300 A CN112983300 A CN 112983300A CN 202110292575 A CN202110292575 A CN 202110292575A CN 112983300 A CN112983300 A CN 112983300A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims description 14
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 10
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000003245 coal Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 132
- 238000010586 diagram Methods 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
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- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
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- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/18—Connecting or disconnecting drill bit and drilling pipe
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- 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
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
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- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
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- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a double-chuck hydraulic power head and application thereof, belonging to the technical field of coal mine hydraulic drilling machines, comprising a main shaft, a front end hydraulic chuck and a rear end hydraulic chuck, which are respectively arranged at the front end and the rear end of the main shaft, and a driving device connected with the main shaft to drive the main shaft to rotate, wherein the main shaft is provided with a through hole, the front end hydraulic chuck and the rear end hydraulic chuck are respectively connected with an oil supply system, the oil supply system comprises an oil distribution sleeve sleeved on the main shaft, the oil distribution sleeve is provided with a first oil supply channel and a second oil supply channel which are respectively connected with a first oil path and a second oil path arranged on the main shaft, the first oil path and the second oil path respectively supply oil to the front end hydraulic chuck and the rear end hydraulic chuck, and the first oil path and the second oil path can. The invention adopts a double-chuck and double-channel structure, not only increases the bearing load of the power head, but also realizes the preposed additional connection and the postpositive additional connection of the drill rod and the automatic additional connection and disassembly of the water braid, and reduces the abrasion of the drill rod.
Description
Technical Field
The invention belongs to the technical field of coal mine hydraulic drilling machines, and relates to a double-chuck hydraulic power head and application thereof.
Background
The existing chuck hydraulic power head is mainly a front-mounted rubber sleeve chuck power head, along with the development of hole lane replacement technology and large-aperture drilling, when the drilling torque is larger than 20000NM, the outer diameter of a rubber sleeve chuck is larger and larger, and the wall thickness of a rubber sleeve is thicker and thicker, so that the development of a high-power head and a high-power drilling machine are limited, meanwhile, a single chuck clamps a drill rod, the surface contact stress of the drill rod is large, and the abrasion is large; the preposed chuck power head can not realize the addition and the disassembly of a water braid.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a dual chuck hydraulic power head and an application thereof, so as to solve the problem of large contact stress on the surface of a drill rod.
In order to achieve the purpose, the invention provides the following technical scheme:
a double-chuck hydraulic power head comprises a main shaft, a front end hydraulic chuck, a rear end hydraulic chuck and a driving device, wherein the main shaft is arranged on a rack and provided with a through hole; the driving device comprises a speed reducer arranged in the middle of the main shaft and a hydraulic motor connected with the speed reducer; the front end hydraulic chuck and the rear end hydraulic chuck are connected with an oil supply system, the oil supply system comprises an oil distribution sleeve sleeved on the main shaft, a first oil supply channel and a second oil supply channel which are respectively connected with a first oil path and a second oil path arranged on the main shaft are arranged on the oil distribution sleeve, the first oil path and the second oil path respectively supply oil for the front end hydraulic chuck and the rear end hydraulic chuck, and the first oil path and the second oil path can supply oil simultaneously or respectively.
Optionally, the oil distribution sleeve is a double-channel single-oil distribution sleeve or a double-oil distribution sleeve.
Optionally, the oil distribution sleeve is sleeved in the middle of the main shaft and comprises an oil distribution sleeve body, a first oil supply channel and a second oil supply channel are respectively arranged at the front end and the rear end of the oil distribution sleeve body, the first oil supply channel comprises a first oil duct surrounding the inner wall of the oil distribution sleeve body and a first oil hole communicated with the first oil duct, and the second oil supply channel comprises a second oil duct surrounding the inner wall of the oil distribution sleeve body and a second oil hole communicated with the second oil duct.
Optionally, the first oil path and the second oil path share a pump station, and the first oil path and the second oil path are respectively controlled to be switched on and off through a first reversing valve and a second reversing valve.
Optionally, the first reversing valve and the second reversing valve are both two-position four-way reversing valves.
A drill rod additional connection method applies the double-chuck hydraulic power head and comprises the following steps: and placing the drill rod to be installed in the through hole of the main shaft, enabling the front-end hydraulic chuck and/or the rear-end hydraulic chuck to clamp the drill rod to be installed, and driving the main shaft and the chuck to rotate by the driving device so as to realize the transmission of load and motion.
A water braid adding method applying the double-chuck hydraulic power head comprises the following steps: and after the rotary connection of the power head and the water braid is completed, the rear-end hydraulic chuck is opened to release the water braid so that the water braid is in a floating state.
A water braid dismounting method applying the double-chuck hydraulic power head comprises the following steps: the front-end hydraulic chuck is opened, the rear-end hydraulic chuck is made to clamp the main shaft of the water swivel, then the main shaft of the power head is rotated to enable the water swivel to be screwed out of the drill rod to be disassembled, and after the water swivel is screwed out of the drill rod to be disassembled, the rear-end hydraulic chuck is opened and the water swivel is taken down.
The invention has the beneficial effects that: a double-chuck and double-channel structure is adopted, so that oil can be supplied to the front chuck and the rear chuck simultaneously or respectively; when the synchronous oil supply is adopted, the two ends of the main shaft are used for simultaneously transmitting loads, so that the torque loads can be connected in parallel, the load superposition is completed under the condition of not changing the structure of the chuck, the problem of large surface contact stress of the drill rod can be remarkably solved, and the large-torque driving is realized; when the oil supply is respectively adopted, the post-positioned mechanical addition of the drill rod or the automatic addition of the water braid is completed; due to the adoption of a double-chuck and double-channel structure, the bearing load of the power head is increased, the preposed additional connection and the postpositive additional connection of the drill rod and the automatic additional connection and disassembly of the water swivel can be realized, and the abrasion of the drill rod is reduced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a first schematic structural diagram of a dual-chuck hydraulic power head;
FIG. 2 is a schematic diagram of a dual chuck hydraulic power head
FIG. 3 is a schematic structural view of an oil distribution sleeve;
FIG. 4 is a first schematic diagram of the oil supply system;
fig. 5 is a second working principle diagram of the oil supply system.
Reference numerals: the hydraulic control device comprises a hydraulic motor 1, a speed reducer 2, a hydraulic chuck 3, a water swivel 6, a rear end hydraulic chuck 31, a front end hydraulic chuck 32, a second oil path 41, an oil distribution sleeve 42, a first oil path 43, a first reversing valve 44, a second reversing valve 45, a pump station 46, a second oil hole 421, a second oil path 422, a first oil hole 423, a first oil path 424, a rear end drill rod 51 and a front end drill rod 52.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1 to 5, a dual-chuck hydraulic power head includes a main shaft having a through hole and disposed on a frame, a front end hydraulic chuck 32 and a rear end hydraulic chuck 31 respectively disposed at front and rear ends of the main shaft, and a driving device connected to the main shaft to drive the main shaft to rotate, the front end hydraulic chuck 32 and the rear end hydraulic chuck 31 are connected to an oil supply system, the oil supply system includes an oil distribution sleeve 42 sleeved on the main shaft, the oil distribution sleeve 42 is provided with a first oil supply channel and a second oil supply channel respectively connected to a first oil path 43 and a second oil path 41 disposed on the main shaft, the first oil path 43 and the second oil path 41 respectively supply oil to the front end hydraulic chuck 32 and the rear end hydraulic chuck 31, and the first oil path 43 and the second oil path 41 can supply oil simultaneously or respectively.
Preferably, the oil distribution sleeve 42 is a dual channel single or dual oil distribution sleeve.
Preferably, the oil distribution sleeve 42 is sleeved in the middle of the main shaft and includes an oil distribution sleeve body, a first oil supply channel and a second oil supply channel are respectively disposed at the front end and the rear end of the oil distribution sleeve body, the first oil supply channel includes a first oil channel 424 surrounding the inner wall of the oil distribution sleeve body and a first oil hole 423 communicated with the first oil channel 424, and the second oil supply channel includes a second oil channel 422 surrounding the inner wall of the oil distribution sleeve body and a second oil hole 421 communicated with the second oil channel 422.
Preferably, the first oil path 43 and the second oil path 41 share the pump station 46, the first oil path 43 and the second oil path 41 control the on-off of the oil paths through the first reversing valve 44 and the second reversing valve 45, and both the first reversing valve 44 and the second reversing valve 45 are two-position four-way reversing valves.
Preferably, the driving means is located between the front end hydraulic chuck 32 and the rear end hydraulic chuck 31, and includes a decelerator 2 connected to the main shaft, and a hydraulic motor 1 connected to the decelerator 2.
A drill rod additional connection method applies the double-chuck hydraulic power head and comprises the following steps: the drill rod to be installed is placed in the through hole of the main shaft, the front end hydraulic chuck 32 and/or the rear end hydraulic chuck 31 clamp the drill rod to be installed, and the driving device drives the main shaft and the chucks to rotate so as to realize the transmission of load and movement.
A water braid adding method applying the double-chuck hydraulic power head comprises the following steps: the front-end hydraulic chuck 32 is opened, the rear-end hydraulic chuck 31 is made to clamp the water swivel 6, then the main shaft is rotated, the power head is made to move axially to enable the water swivel 6 to be screwed with the drill rod to be additionally connected, and after the power head is screwed with the water swivel 6, the rear-end hydraulic chuck 31 is opened to loosen the water swivel 6.
A water braid dismounting method applying the double-chuck hydraulic power head comprises the following steps: the front end hydraulic chuck 32 is opened, the rear end hydraulic chuck 31 is made to clamp the water swivel 6, then the main shaft is rotated to enable the water swivel 6 to be screwed out of the drill rod to be disassembled, and after the water swivel 6 is screwed out of the drill rod to be disassembled, the rear end hydraulic chuck 31 is opened and the water swivel 6 is taken down.
The invention adopts a double-chuck and double-channel structure, and the oil supply system adopts a double-channel single-distribution oil sleeve or a double-distribution oil sleeve, and can supply oil to the front chuck and the rear chuck simultaneously or respectively; when the simultaneous oil supply is adopted, the two ends of the main shaft are utilized to simultaneously transfer loads, so that the torque loads can be connected in parallel, the load superposition is completed under the condition of not changing the structure of the chuck, and the problem of large surface contact stress of the drill rod can be remarkably solved; when the oil supply is respectively adopted, the post-positioned mechanical splicing or the automatic splicing of the water swivel of the drill rod is completed. In addition, the double-chuck double-channel structure is adopted, so that the bearing load of the power head is increased, the front additional connection and the rear additional connection of the drill rod and the automatic additional connection and disassembly of the water swivel can be realized, and the abrasion of the drill rod is reduced.
Example 1
A double-chuck hydraulic power head is structurally shown in figures 1-5 and comprises a main shaft with a through hole, a hydraulic motor 1, a speed reducer 2, a hydraulic chuck 3 and an oil supply system; the through hole of the main shaft is matched with the drill rod, and the main shaft is arranged in the power head box body through a bearing; the hydraulic chucks 3 are positioned at two ends of the main shaft, are rigidly connected with the main shaft, and have clamping centers collinear with the rotation center of the main shaft; the speed reducer 2 is positioned in the middle of the main shaft, the output end of the speed reducer is connected with the main shaft, and the input end of the speed reducer is connected with the hydraulic motor 1; the hydraulic motor 1 is mounted on the frame of the drilling machine. The power head is arranged on a rack of a drilling machine and completes the addition and the disassembly of a drill rod and a water braid together with a clamp arranged on the rack of the drilling machine; the clamp holder is concentric with the clamping center of the power head, and the clamp holder is mainly used for fixing the additional connection drill rod or the water swivel when the additional connection drill rod or the water swivel is added, so that the additional connection piece in the hydraulic chuck 3 and the additional connection piece in the clamp holder can rotate relatively, and the additional connection and disassembly functions are realized. The specific structure and function of each part are as follows:
the hydraulic motor 1: providing the rotary power of the power head;
and a speed reducer 2: finishing the adjustment of the rotating speed and the torque;
a chuck 3: the drill rod or the water swivel 6 is clamped under the action of hydraulic oil, and the drill rod or the water swivel 6 is loosened when oil supply is stopped; the chuck 3 mainly comprises a rear end hydraulic chuck 31 and a front end hydraulic chuck 32, the chuck is connected with the main shaft, and an oil duct on the chuck is connected with an oil supply hole of the main shaft;
an oil supply system: the oil supply device is used for supplying oil for the rotation of the chuck and mainly comprises a first oil path 43, an oil distribution sleeve 42, a second oil path 41, a first reversing valve 44, a second reversing valve 45 and a pump station 46;
second oil passage 41: the rotation oil supply of the rear end hydraulic chuck 31 is completed and the rear end hydraulic chuck is positioned in the main shaft;
oil distribution sleeve 42: the oil distribution sleeve 42 is fixed in the rotation process of the main shaft, so that oil supply to the main shaft in a rotating way is completed;
the structure of the oil distribution sleeve 42 is shown in fig. 3, the oil distribution sleeve 42 is composed of a first oil hole 423, a first oil duct 424, a second oil hole 421 and a second oil duct 422, an inner hole of the oil distribution sleeve is matched with a main shaft of the power head, sealing of rotary oil supply is completed by utilizing a matching gap of the inner hole, the oil hole is connected with an oil path of an oil supply system, and the oil duct is connected with a chuck oil supply hole on the main shaft.
First oil passage 43: the oil supply of the front end hydraulic chuck 32 is completed;
first direction change valve 44: controlling the supply of oil to the front end hydraulic chuck 32;
second direction change valve 45: controlling the oil supply to the rear end hydraulic chuck 31;
pump station 46: and oil supply of the two chucks is completed.
Water braid 6: realize the rotatory water supply function, satisfy the flushing hole effect in the drilling.
Example 2
The method for stacking loads, as shown in fig. 4, comprises the following steps:
(1) initial state: the first reversing valve 44 and the second reversing valve 45 are in an oil return state, and the two chucks are in an opening state under the action of springs;
(2) the rear end drill rod 51 is connected with the front end drill rod 52, is placed in a power head main shaft hole and is placed in an effective clamping position corresponding to the chuck;
(3) the pump station 46 is started;
(4) the second reversing valve 45 and the first reversing valve 44 are reversed, and oil is respectively supplied to the rear end hydraulic chuck 31 and the front end hydraulic chuck 32;
(5) the rear-end hydraulic chuck 31 and the front-end hydraulic chuck 32 respectively clamp the rear-end drill rod 51 and the front-end drill rod 52 or respectively clamp the rear-end drill rod 51 or the front-end drill rod 52;
(6) the hydraulic motor 1 supplies oil, and drives the main shaft and the chuck to rotate through the speed reducer 2, so that the transmission of load and motion is realized; example 3
The method for water swivel jointing, as shown in fig. 5, comprises the following steps:
the drill pipe to be jointed (i.e., the front end drill pipe 52) is in a fixed state (usually in cooperation with a drill holder), and the rear end hydraulic chuck 31 and the front end hydraulic chuck 32 are in an open state;
(1) the water swivel 6 is placed in the effective clamping position of the rear end hydraulic chuck 31;
(2) the pump station 46 is started;
(3) the second reversing valve 45 is reversed, oil is supplied to the rear end hydraulic chuck 31, the rear end hydraulic chuck 31 clamps the water swivel 6, and the main shaft rotates;
(4) the water swivel 6 moves along the axial direction along with the power head to the drill rod to be additionally connected, and the water swivel 6 is contacted with the tail end of the drill rod to be additionally connected (namely the front end drill rod 52);
(5) the power head rotates forwards and moves along the axial direction to realize the screwing of the water swivel 6 and the drill rod to be additionally connected;
(6) and the second reversing valve 45 reverses, the rear-end hydraulic chuck 31 is in an oil return state, the rear-end hydraulic chuck 31 loosens the water swivel 6 to complete the additional connection of the water swivel 6, and then the main shaft continues to rotate to start drilling.
The post-positioned adding connection of the drill rod is the same as the adding connection process of the water swivel.
Example 4
A method of water braid removal, as shown in fig. 5, comprising the steps of:
the swivel 6 is connected to the drill pipe to be removed (i.e. the front end drill pipe 52) and is fixed (typically by engagement with the drill holder) with the swivel axis of the swivel 6 in the active gripping position of the chuck 31.
(1) The pump station 46 is started;
(2) the first directional valve 44 is switched to the oil return state with the front end hydraulic chuck 32 in the open state;
(3) switching the second reversing valve 45 to enable the rear end hydraulic chuck 31 to be in an oil supply state, and enabling the rear end hydraulic chuck 31 to clamp the rotating shaft of the water swivel 6;
(4) the power head rotates reversely and is in a floating state, and the rotating shaft of the water swivel 6 is screwed out of the drill rod to be disassembled (namely the front end drill rod 52);
(5) switching the second directional valve 45 so that the rear end hydraulic chuck 31 is in an oil return state, and the rear end hydraulic chuck 31 is opened;
(6) and taking down the water swivel 6 to finish the disassembly of the water swivel 6.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (8)
1. The utility model provides a two chuck hydraulic power heads which characterized in that: the hydraulic chuck device comprises a main shaft, a front end hydraulic chuck, a rear end hydraulic chuck and a driving device, wherein the main shaft is arranged on a rack and provided with a through hole; the driving device comprises a speed reducer arranged in the middle of the main shaft and a hydraulic motor connected with the speed reducer; the front end hydraulic chuck and the rear end hydraulic chuck are connected with an oil supply system, the oil supply system comprises an oil distribution sleeve sleeved on the main shaft, a first oil supply channel and a second oil supply channel which are respectively connected with a first oil path and a second oil path arranged on the main shaft are arranged on the oil distribution sleeve, the first oil path and the second oil path respectively supply oil for the front end hydraulic chuck and the rear end hydraulic chuck, and the first oil path and the second oil path can supply oil simultaneously or respectively.
2. The dual-chuck hydraulic power head of claim 1, wherein: the oil distribution sleeve is a double-channel single-oil distribution sleeve or a double-oil distribution sleeve.
3. The dual-chuck hydraulic power head of claim 1, wherein: the oil distribution sleeve is sleeved in the middle of the main shaft and comprises an oil distribution sleeve body, a first oil supply channel and a second oil supply channel are arranged at the front end and the rear end of the oil distribution sleeve body respectively, the first oil supply channel comprises a first oil duct surrounding the inner wall of the oil distribution sleeve body and a first oil hole communicated with the first oil duct, and the second oil supply channel comprises a second oil duct surrounding the inner wall of the oil distribution sleeve body and a second oil hole communicated with the second oil duct.
4. The dual-chuck hydraulic power head of claim 1, wherein: the first oil path and the second oil path share the pump station, and the first oil path and the second oil path are respectively controlled to be switched on and off through the first reversing valve and the second reversing valve.
5. The dual-chuck hydraulic power head of claim 4, wherein: the first reversing valve and the second reversing valve are both two-position four-way reversing valves.
6. A drill rod joining method is characterized in that: the double-chuck hydraulic power head applied to any one of claims 1 to 5 comprises the following steps: and placing the drill rod to be installed in the through hole of the main shaft, enabling the front-end hydraulic chuck and/or the rear-end hydraulic chuck to clamp the drill rod to be installed, and driving the main shaft and the chuck to rotate by the driving device so as to realize the transmission of load and motion.
7. A water braid adding method is characterized in that: the double-chuck hydraulic power head applied to any one of claims 1 to 5 comprises the following steps: and after the rotary connection of the power head and the water braid is completed, the rear-end hydraulic chuck is opened to release the water braid so that the water braid is in a floating state.
8. A water braid disassembling method is characterized in that: the double-chuck hydraulic power head applied to any one of claims 1 to 5 comprises the following steps: the front end hydraulic chuck is opened, the rear end hydraulic chuck is made to clamp the water swivel, then the main shaft is rotated to enable the water swivel to be screwed out from the drill rod to be disassembled, and after the water swivel is screwed out from the drill rod to be disassembled, the rear end hydraulic chuck is opened and the water swivel is taken down.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110292575.5A CN112983300A (en) | 2021-03-18 | 2021-03-18 | Double-chuck hydraulic power head and application thereof |
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| CN202110292575.5A CN112983300A (en) | 2021-03-18 | 2021-03-18 | Double-chuck hydraulic power head and application thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113833419A (en) * | 2021-09-07 | 2021-12-24 | 中煤科工集团西安研究院有限公司 | Multi-power combined type drilling machine double-chuck rotation system and method |
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