CN213359983U - Hydraulic high-frequency vibration rotary power head - Google Patents
Hydraulic high-frequency vibration rotary power head Download PDFInfo
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- CN213359983U CN213359983U CN202022313230.7U CN202022313230U CN213359983U CN 213359983 U CN213359983 U CN 213359983U CN 202022313230 U CN202022313230 U CN 202022313230U CN 213359983 U CN213359983 U CN 213359983U
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A hydraulic high-frequency vibration rotary power head comprises a hydraulic vibrator and a double-motor rotary power head; the hydraulic vibrator is connected with the shell of the double-motor rotary power head through a screw; when the servo motor drives the valve core of the hydraulic frequency modulation valve to rotate at a set rotating speed, high-pressure oil alternately enters the upper cavity and the lower cavity of the hydraulic vibration cylinder under the distribution of the oil inlet and outlet grooves to drive the piston of the hydraulic vibrator and the impact head to do periodic high-frequency reciprocating motion, the generated downward excitation force acts on the upper end of the main shaft of the power head, and the main shaft is transmitted to the impact head through the drill rod to realize high-frequency impact. The double-motor rotary power head transmits rotary power to the main shaft. The main shaft drives the drill bit to perform rotary drilling. The utility model discloses utilize the downward excitation force effect that hydraulic vibrator produced to realize high-frequency vibration gyration and creep into, have that vibration frequency is high, frequency range is big, the vibrational force is big, working property is stable, efficient, longe-lived advantage.
Description
Technical Field
The utility model relates to a high-efficient technical field that creeps into in earth's surface covering stratum, in particular to hydraulic pressure high-frequency vibration gyration unit head, concretely relates to high-frequency excitation force and rotary motion that use hydraulic vibrator to produce combine together, realize drilling tool and hydraulic vibration gyration drilling method that high-frequency vibration gyration was crept into.
Background
With the acceleration of the urbanization process and the rapid development of the modern industry, the environmental geological problem becomes a key problem to be solved urgently in the sustainable development process of each city, and the requirement on environmental geological survey is gradually improved. According to statistics, 2000 hectares of farmland in China are polluted by heavy metals, about 1/5 of the total area of the farmland, 100 hundred million kilograms of grain production reduction is caused every year, food and drug safety events caused by insufficient soil pollution prevention and control and lack of environmental supervision frequently occur, and hundreds of serious pollution accidents occur in China since 2008, so that huge economic loss and extremely bad social influence are caused. Book of national outline of scientific and technical development planning (2006-2020), environment is determined as the key field of "providing support for science and technology urgently needed" in the next 15 years; one of the basic principles of the opinion on accelerating the promotion of ecological civilization construction published in 2015 by the State administration is 'protection priority and natural recovery are dominant'; the work target of the action plan for preventing and controlling soil pollution released by the state administration in 2016 mainly aims at the national soil environment quality, the soil environment safety of agricultural land and construction land and the ecological environment. The conventional environmental geology exploration method in China adopts rotary drilling sampling, and has the problems of low drilling efficiency of complex stratums, pollution of slurry to samples, single drilling function of a drilling machine, poor maneuverability, insufficient drilling capacity, high drilling cost and the like.
The high-frequency impact rotary can solve the problems, but environmental engineering companies such as Nanjing Mytilus edulis, Jiangsu Geya, Zhejiang Qingyang and the like, environmental sampling drills produced by Spain TecoP, S.A. company, GeoProbe corporation and AMS group abroad, sonic drills produced and developed by Wuxi mineral mechanical factories, China coal geological center, Jilin university, China geological university (Beijing), EcoProbe, Holland Eijkelkamp, BoartLongyear, Canada SonicDrill and Japanese Tone Boring and the like, and mechanical eccentric wheel type vibrators are all arranged on a power head. A related patent owned by the second department of exploration, llc, of middlings, the university of science and technology in hunan, is also a mechanical eccentric wheel vibrator. The vibrator is not suitable for compact high-strength stratum due to low vibration frequency, and has the technical problems of easy heating and short service life. The requirements of environment geological investigation on rapidness and high efficiency can not be met, and the requirements of engineering geological exploration holes, hydrogeological observation holes and ground source heat pump holes on high-efficiency construction can not be met. The hydraulic high-frequency vibrator has the advantages of high vibration frequency, large frequency range, large vibration force, stable working performance, high efficiency and long service life, can solve the technical problems of the mechanical eccentric wheel type vibrator, and meets the construction requirements of environmental geological exploration and related fields.
The utility model discloses to above problem, through utility model hydraulic pressure high-frequency vibration gyration unit head and creep into the method, improve and optimize prior art to realize high-efficient, low-cost the drilling.
Disclosure of Invention
The utility model aims at providing a hydraulic pressure high frequency vibration gyration unit head and method of creeping into for solve in environmental geology and engineering geology reconnaissance, hydrogeology observe and ground source heat pump hole construction field, the vibrator vibration frequency who exists is low, easily generate heat, poor stability, life-span are low, creep into technical problem with low efficiency, with high costs.
A hydraulic high-frequency vibration rotary power head comprises a hydraulic vibrator and a double-motor rotary power head;
the hydraulic vibrator is connected with the shell of the double-motor rotary power head through a screw;
the hydraulic vibrator comprises an oil groove, a P high-pressure oil inlet pipe, a valve body, a valve sleeve, a valve core, a sealing ring, a set screw, an oil return opening I, an oil opening II, an oil return opening II, a lower cavity oil pipe, a P high-pressure oil inlet pipe, an upper cavity oil pipe, an impactor shell, an upper offset oil groove, a vibrator piston, a piston rod, a lower offset oil groove, an impact head and a guide sleeve. Three shoulders provided with oil grooves are arranged on the valve core, each shoulder is provided with a plurality of oil grooves, and two adjacent oil grooves are separated by a set central angle on the same shoulder; on the adjacent shoulders, the oil grooves are staggered with each other, the oil groove openings below the first shoulder and the middle shoulder are consistent, and the oil groove openings above the third shoulder and the middle shoulder are also consistent; the high-pressure oil inlet pipe is connected with the oil groove, and the other end of the oil groove is respectively connected with an oil return port I, an oil return port II, an oil port I and an oil port II; the oil port I and the oil port II are respectively communicated with an upper cavity oil pipe and a lower cavity oil pipe, and the P high-pressure oil inlet pipe is connected with the middle cavity of the vibrator. The hydraulic vibrator is divided into an upper cavity part, a middle cavity part and a lower cavity part by the vibrator piston, the lower end of the piston rod is provided with an impact head, the impact head is contacted with a double-motor rotary power head, a guide sleeve is contacted with the impact head, a tapered roller bearing is contacted with a sliding key sleeve, a first bearing cover and a second bearing cover are contacted with a bearing at the lower part of a gear shaft, and the bearing is positioned.
The double-motor rotary power head comprises a main shaft, a hydraulic motor I and a hydraulic motor II; the hydraulic motor I and the hydraulic motor II are fixed through bearings respectively and drive the gear shaft to rotate directionally, the gear shaft drives the large gear to rotate, the large gear drives the sliding key sleeve to rotate through the flat key, the sliding key sleeve drives the main shaft to rotate through the sliding key, the sliding key is assembled between the sliding key sleeve and the main shaft, the main shaft can slide up and down in the sliding key sleeve, and vibration force is guaranteed to be effectively transmitted to the lower drill rod. The downward exciting force generated by the hydraulic vibrator acts on the upper end of the main shaft, and the main shaft is transmitted to the drill bit through the drill rod; the gland is connected with the impactor shell and the top cover to seal the cavity.
The lower end of the main shaft of the power head is connected with a drill rod and a drill bit, the power head drives the drill rod and the drill bit to rotate and downwards feed and pressurize, and an impact head of a vibrator presses on the main shaft of the power head. Under the drive of high-pressure oil, the vibrator piston generates high-frequency up-and-down vibration, and the vibration force of the piston is transmitted to the main shaft, the drill rod and the drill bit through the impact head, so that the high-frequency vibration rotary drilling of the drill bit is realized.
The utility model discloses a theory of operation:
the hydraulic vibrator and the double-motor rotary power head are connected and fixed together through a set screw, when a servo motor drives a valve core of a hydraulic frequency modulation valve to rotate at a set rotating speed, high-pressure oil alternately enters an upper cavity and a lower cavity of a hydraulic vibration cylinder under the distribution of an oil groove to drive a piston of the hydraulic vibrator to do periodic high-frequency reciprocating motion, the generated downward excitation force acts on the upper end of a main shaft of the power head, and the main shaft is transmitted to an impact head through a drill rod to realize high-frequency impact. The double-motor rotary power head drives a gear shaft through a hydraulic motor I and a hydraulic motor II, the gear shaft transmits rotary power to a large gear, the large gear is transmitted to a sliding key sleeve through a flat key, and the sliding key sleeve is assembled with a main shaft to transmit the rotary power to the main shaft. The main shaft drives the drill bit to perform rotary drilling. The hydraulic vibrator and the double-motor rotary power head are matched to realize the high-frequency impact rotary drilling of the drill bit. When the power head lifts the drilling tool, the main shaft moves downwards, and a certain gap is formed between the impact head of the hydraulic vibrator and the main shaft, so that the vibration force of the vibrator cannot act on the main shaft of the gyrator when the drilling tool is lifted, and the safety protection effect is achieved.
The utility model discloses a working process:
a) high-pressure oil enters the oil groove from the P high-pressure oil inlet pipe, the servo motor drives the valve core of the hydraulic frequency modulation valve to rotate at a constant speed to regulate and control the oil way of the hydraulic oil, the high-pressure oil and the low-pressure oil are respectively sent into an upper cavity and a lower cavity of the hydraulic vibrator through the oil port I, the oil port II, an upper cavity oil pipe and a lower cavity oil pipe, and meanwhile, the high-pressure oil enters the middle cavity of the hydraulic vibrator from the P high-pressure oil inlet pipe;
b) when high-pressure oil enters the upper cavity of the hydraulic vibration cylinder, oil is returned from the lower cavity, and the vibrator piston rapidly descends;
c) when high-pressure oil enters the lower cavity of the hydraulic vibration cylinder, oil returns from the upper cavity, and the vibrator piston quickly moves upwards;
d) when the servo motor drives the valve core to rotate continuously, high-pressure oil enters from the P high-pressure oil inlet pipe and is alternately conveyed to the upper cavity and the lower cavity of the hydraulic vibration cylinder through the oil grooves on the valve core to drive the piston to complete high-frequency vibration excitation;
e) the upper offset oil groove and the lower offset oil groove play a role in balancing the vibration center of the piston, the high-pressure oil pressure fed by the P high-pressure oil inlet pipe is stronger than that fed by the P high-pressure oil inlet pipe, and when the piston of the vibrator deviates from the center position, the upper cavity or the lower cavity of the hydraulic vibration cylinder is communicated with the P high-pressure oil inlet pipe to perform forced deviation correction;
f) when the vibration piston deviates from the central position upwards, an oil port I of the hydraulic vibration cylinder is closed, meanwhile, high-pressure oil enters an upper cavity of the hydraulic vibration cylinder through a P high-pressure oil inlet pipe through an upper offset oil groove, and under the action of the high-pressure oil entering the P high-pressure oil inlet pipe, the vibration piston moves downwards and returns to the vibration central position;
g) when the vibration piston deviates from the central position downwards, an oil port II of the hydraulic vibration cylinder is closed, meanwhile, high-pressure oil enters a lower cavity of the hydraulic vibration cylinder through a P high-pressure oil inlet pipe through a lower offset oil groove, and under the action of the high-pressure oil entering the P high-pressure oil inlet pipe, the vibration piston moves upwards and returns to the vibration central position;
h) the hydraulic motor I and the hydraulic motor II respectively transmit rotary power to a large gear through a gear shaft, the large gear is transmitted to a sliding key sleeve through a flat key, the sliding key assembly is arranged between the sliding key sleeve and a main shaft, the rotary power is transmitted to the main shaft, and the main shaft can slide up and down in the sliding key sleeve for a set distance; the downward exciting force generated by the hydraulic vibrator acts on the upper end of the main shaft, and the main shaft is transmitted to a drill bit through a drill rod, so that hydraulic high-frequency vibration rotary drilling is realized;
i) when the power head lifts the drilling tool, the main shaft moves downwards relative to the impact head, and a set gap is formed between the impact head of the hydraulic vibrator and the main shaft, so that the vibration force of the vibrator cannot act on the main shaft of the gyrator when the drilling tool is lifted, and the safety protection effect is achieved.
The hydraulic high-frequency vibration rotary drilling method comprises the following steps:
1) the lower part of a main shaft 34 of the power head is connected with a drill rod and a drill bit;
2) the hydraulic motor I and the hydraulic motor II drive the main shaft, the drill rod and the drill bit to rotate through the shaft gear, the large gear and the sliding key sleeve;
3) applying downward pressure to the drill rod through the power head to enable the impact head of the vibrator to tightly press the main shaft of the power head;
4) introducing high-pressure oil into the vibrator to make P2The high pressure oil pressure of the high pressure oil inlet pipe is stronger than P1The high pressure oil pressure of the high pressure oil inlet pipe is strong, and the valve core is driven by the servo motor to rotate at high speed, so that the P is ensured1The high-pressure oil of the high-pressure oil inlet pipe drives the piston and drives the impact head to vibrate at high frequency. P2The high-pressure oil of the high-pressure oil inlet pipe ensures that a piston of the vibrator is positioned in a vibration center;
5) the impact head transmits the high-frequency vibration force to a main shaft of the power head, and the main shaft transmits the high-frequency vibration force to the drill bit through the drill rod, so that high-frequency vibration rotary drilling is realized;
6) when the drilling tool is upwards moved by the power head in the drilling process, the main shaft of the power head can downwards move relative to the impact head, so that a gap is formed between the vibration head of the vibrator and the main shaft, the vibration force cannot act on the power head, and the safety of the power head is ensured.
7) And after the drilling is finished, stopping the power head to rotate, unloading the high-pressure oil and lifting the drilling tool.
The utility model has the advantages that:
the utility model discloses improve and optimize prior art, this utility model utilizes the downward exciting force effect that hydraulic vibrator produced to realize the purpose of high-frequency impact rotary drilling, can solve the technical problem that mechanical eccentric wheel formula vibrator exists, compares in current mechanical eccentric wheel formula vibrator this equipment have vibration frequency height, vibrating force is big, working property is stable, efficient, longe-lived advantage to applicable in harder stratum. When the power head lifts the drilling tool, the main shaft moves downwards, and a certain gap is formed between the impact head of the hydraulic high-frequency vibrator and the main shaft, so that the vibration force of the vibrator cannot act on the main shaft of the power head when the drilling tool is lifted, and the safety protection effect is achieved. And the construction requirements of environmental geological exploration and related fields are met.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the stroke working state of the present invention.
Fig. 3 is a schematic diagram of the return stroke operation state of the present invention.
In the figure: 1-an oil groove; 2-P1A high pressure oil inlet pipe; 3-a valve body; 4-valve housing; 5-valve core; 6-sealing ring; 7-set screws; 8-oil return port; 9-oil port I; 10-oil port II; 11-oil return port II; 12-lower cavity oil pipe; 13-P2A high pressure oil inlet pipe; 14-upper cavity tubing; 15-an impactor housing; 16-an upper offset oil groove; 17-a vibrator piston; 18-a piston rod; 19-lower offset oil sump; 20-impact head; 21-hydraulic motor I; 22-hydraulic motor II; 23-a guide sleeve; 24-a top cover; 25-pressing the cover; 26-a flat bond; 27-a bearing; 28-sliding key sleeve; 29-gearwheel; 30-a gear shaft; 31-tapered roller bearings; 32-a first bearing cap; 33-a second bearing cap; 34-main shaft.
Detailed Description
As shown in fig. 1, a hydraulic high-frequency vibration rotary power head comprises a hydraulic vibrator and a dual-motor rotary power head;
the hydraulic vibrator is connected with the shell of the double-motor rotary power head through a screw;
the hydraulic vibrator comprises oil grooves 1 and P1High-pressure oil inlet pipe 2, valve body 3, valve sleeve 4, valve core 5 and sealing ring6. Set screw 7, oil return port I8, oil port I9, oil port II 10, oil return port II 11, lower cavity oil pipe 12, P2The high-pressure oil feeding pipe 13, the upper cavity oil pipe 14, the impactor casing 15, the upper offset oil groove 16, the vibrator piston 17, the piston rod 18, the lower offset oil groove 19, the impact head 20 and the guide sleeve 23. Three shoulders provided with oil grooves 1 are arranged on the valve core 5, each shoulder is provided with a plurality of oil grooves 1, and two adjacent oil grooves 1 are separated by a set central angle on the same shoulder; on the adjacent shoulders, the oil grooves 1 are staggered with each other, the openings of the oil grooves 1 below the first shoulder and the middle shoulder are consistent, and the openings of the oil grooves 1 above the third shoulder and the middle shoulder are also consistent; p1The high-pressure oil inlet pipe 2 is connected with the oil groove 1, and the other end of the oil groove 1 is respectively connected with an oil return port I8, an oil return port II 1, an oil port I9 and an oil port II 10; the oil port I9 and the oil port II 10 are respectively communicated with an upper cavity oil pipe 14 and a lower cavity oil pipe 12, P2And a high-pressure oil inlet pipe 13 is connected with the middle cavity of the vibrator. The impactor shell 15 is connected with an upper offset oil groove 16 and a lower offset oil groove 19, the upper offset oil groove 16 is located at the side edge of an upper cavity of a hydraulic vibrator, the lower offset oil groove 19 is located at the side edge of a lower cavity of the hydraulic vibrator, a vibrator piston 17 is connected with a piston rod 18 and located inside the impactor shell 15, the vibrator piston 17 is in contact with the impactor shell 15, the hydraulic vibrator is divided into an upper cavity part, a middle cavity part and a lower cavity part by the vibrator piston 17, an impact head 20 is arranged at the lower end of the piston rod 18, the impact head 20 is in contact with a double-motor rotary power head, a guide sleeve 23 is in contact with the impact head 20, a tapered roller bearing 31 is in contact with a sliding key sleeve 28, a first bearing cover 32 and a second bearing cover.
The double-motor rotary power head comprises a main shaft 34, a hydraulic motor I21 and a hydraulic motor II 22; the hydraulic motor I21 and the hydraulic motor II 22 are fixed through a bearing 27 respectively and drive a gear shaft 30 to rotate directionally, the gear shaft 30 drives a large gear 29 to rotate, the large gear 29 drives a sliding key sleeve 28 to rotate through a flat key 26, the sliding key sleeve 28 drives a main shaft to rotate through the sliding key, the sliding key sleeve 28 and the main shaft 34 are assembled through the sliding key, and the main shaft 34 can slide up and down in the sliding key sleeve to ensure that vibration force is effectively transmitted to a lower drill rod. The downward excitation force generated by the hydraulic vibrator acts on the upper end of the main shaft 34, and the main shaft 34 is transmitted to the drill bit through the drill rod. The gland 25 is connected to the impactor casing 15 and the top cover 24 to close the cavity.
The lower end of the power head main shaft 34 is connected with a drill rod and a drill bit, the power head drives the drill rod and the drill bit to rotate and downwards feed and pressurize, and the impact head of the vibrator presses the main shaft 34 of the power head. Under the drive of high-pressure oil, the vibrator piston 17 generates high-frequency up-and-down vibration, and the vibration force of the piston is transmitted to the main shaft 34, the drill rod and the drill bit through the impact head, so that the high-frequency vibration rotary drilling of the drill bit is realized.
The utility model discloses a theory of operation:
the hydraulic vibrator and the double-motor rotary power head are connected and fixed together through a set screw, when a servo motor drives a valve core 5 of a hydraulic frequency modulation valve to rotate at a set rotating speed, high-pressure oil alternately enters an upper cavity and a lower cavity of a hydraulic vibration cylinder under the distribution of an oil groove 1 to drive a piston 17 of the hydraulic vibrator to do periodic high-frequency reciprocating motion, the generated downward excitation force acts on the upper end of a main shaft 34 of the power head, and the main shaft 34 is transmitted to an impact head through a drill rod to realize high-frequency impact. The double-motor rotary power head drives a gear shaft 30 through a hydraulic motor I21 and a hydraulic motor II 22, the gear shaft 30 transmits rotary power to a large gear 29, the large gear 29 is transmitted to a sliding key sleeve 28 through a flat key 26, and the sliding key sleeve 28 and a main shaft 34 are assembled through a sliding key, so that the rotary power is transmitted to the main shaft 34. The main shaft 34 drives the drill bit to rotate for drilling. The hydraulic vibrator and the double-motor rotary power head are matched to realize the high-frequency impact rotary drilling of the drill bit. When the power head lifts the drilling tool, the main shaft 34 moves downwards, a certain gap is formed between the impact head of the hydraulic vibrator and the main shaft, the vibration force of the vibrator cannot act on the main shaft of the gyrator when the drilling tool is lifted, and the safety protection effect is achieved.
The utility model discloses a working process: as shown in fig. 2 and 3;
a) high pressure oil from P1The high-pressure oil inlet pipe 2 enters the oil groove 1, the servo motor drives the valve core 5 of the hydraulic frequency modulation valve to rotate at a constant speed to regulate and control the oil path of the hydraulic oil, and the high-pressure oil and the low-pressure oil are respectively sent into the hydraulic oil through the oil port I9, the oil port II 10, the upper cavity oil pipe 14 and the lower cavity oil pipe 12Upper and lower chambers for vibrator with high pressure oil from P2A high-pressure oil inlet pipe 13 enters a middle cavity of the hydraulic vibrator;
b) when high-pressure oil enters the upper cavity of the hydraulic vibration cylinder, oil returns from the lower cavity, and the vibrator piston 17 rapidly descends;
c) when high-pressure oil enters the lower cavity of the hydraulic vibration cylinder, oil returns from the upper cavity, and the vibrator piston 17 quickly moves upwards;
d) when the servo motor drives the valve core 5 to rotate continuously, high-pressure oil flows from P1A high-pressure oil inlet pipe 2 enters and is alternately conveyed to the upper cavity and the lower cavity of the hydraulic vibration cylinder through an oil groove 1 on a valve core 5 to drive a piston to complete high-frequency excitation;
e) the upper and lower offset oil grooves 16 and 19 serve to balance the center of vibration of the piston, P2The high pressure oil pressure of the high pressure oil inlet pipe 13 is stronger than P1The high pressure oil fed by the high pressure oil inlet pipe 2 is strong, and when the vibrator piston 17 deviates from the central position, the upper cavity or the lower cavity of the hydraulic vibration cylinder and the P2The high-pressure oil inlet pipe 13 is communicated to perform forced deviation correction;
f) when the vibration piston 17 is deviated from the center position upward, the oil port i 9 of the hydraulic vibration cylinder is closed, and simultaneously, the high-pressure oil passes through P2The high-pressure oil inlet pipe 13 enters the upper cavity of the hydraulic vibration cylinder through the upper offset oil groove 16, and the high-pressure oil enters the upper cavity P2Under the action of the high-pressure oil inlet pipe 13, the vibration piston 17 moves downwards to return to the vibration center;
g) when the vibration piston 17 is deviated downward from the center position, the oil port II 10 of the hydraulic vibration cylinder is closed, and simultaneously, the high-pressure oil passes through P2The high-pressure oil inlet pipe 13 enters the lower cavity of the hydraulic vibration cylinder through the lower offset oil groove 19, and the high-pressure oil enters the lower cavity P2Under the action of the high-pressure oil inlet pipe 13, the vibration piston 17 moves upwards and returns to the vibration center;
h) the hydraulic motor I21 and the hydraulic motor II 22 respectively transmit rotary power to a large gear 29 through a gear shaft 30, the large gear 29 is transmitted to a sliding key sleeve 28 through a flat key 26, a sliding key assembly is arranged between the sliding key sleeve and a main shaft 34, the rotary power is transmitted to the main shaft 34, and the main shaft 34 can slide up and down in the sliding key sleeve 28 for a set distance; downward exciting force generated by the hydraulic vibrator acts on the upper end of the main shaft 34, and the main shaft 34 transmits the downward exciting force to a drill bit through a drill rod, so that hydraulic high-frequency vibration rotary drilling is realized;
i) when the power head lifts the drilling tool, the main shaft 34 moves downwards relative to the impact head 20, and a set gap is formed between the impact head of the hydraulic vibrator and the main shaft 34, so that the vibration force of the vibrator cannot act on the main shaft of the gyrator when the drilling tool is lifted, and the safety protection effect is achieved.
The hydraulic high-frequency vibration rotary drilling method comprises the following steps: as shown in fig. 2 and 3;
1) the lower part of a main shaft 34 of the power head is connected with a drill rod and a drill bit;
2) the hydraulic motor I21 and the hydraulic motor II 22 drive the main shaft 34, the drill rod and the drill bit to rotate through the shaft gear 30, the large gear 29 and the sliding key sleeve 28;
3) applying downward pressure to the drill rod through the power head to enable the impact head of the vibrator to press a main shaft 34 of the power head;
4) introducing high-pressure oil into the vibrator to make P2The high pressure oil pressure of the high pressure oil inlet pipe 13 is stronger than P1The high pressure oil fed by the high pressure oil inlet pipe 2 is strong, and the valve core 5 is driven by the servo motor to rotate at high speed, so that the P is ensured1The high-pressure oil in the high-pressure oil inlet pipe 2 drives the piston 17 and drives the impact head to vibrate at high frequency. P2The high-pressure oil of the high-pressure oil inlet pipe 13 ensures that the piston 17 of the vibrator is positioned at the vibration center;
5) the impact head transmits the high-frequency vibration force to a main shaft 34 of the power head, and the main shaft transmits the high-frequency vibration force to the drill bit through the drill rod, so that high-frequency vibration rotary drilling is realized;
6) when the drilling tool is lifted upwards by the power head in the drilling process, the main shaft 34 of the power head can move downwards relative to the impact head 20, so that a gap is generated between the vibration head of the vibrator and the main shaft 34, the vibration force cannot act on the power head, and the safety of the power head is ensured.
7) And after the drilling is finished, stopping the power head to rotate, unloading the high-pressure oil and lifting the drilling tool.
Claims (1)
1. The utility model provides a hydraulic pressure vibration gyration unit head which characterized in that: comprises a hydraulic vibrator and a double-motor rotary power head; the hydraulic vibrator is connected with the shell of the double-motor rotary power head through a screw;
the hydraulic vibrator comprises an oil groove (1) and a P1High-pressure oil inlet pipe (2), valve body (3), valve sleeve (4), valve core (5), sealing ring (6), set screw (7), oil return port I (8), oil port I (9), oil port II (10), oil return port II (11), lower cavity oil pipe (12), P2The device comprises a high-pressure oil inlet pipe (13), an upper cavity oil pipe (14), an impactor shell (15), an upper offset oil groove (16), a vibrator piston (17), a piston rod (18), a lower offset oil groove (19), an impact head (20) and a guide sleeve (23); three shoulders provided with oil grooves (1) are arranged on the valve core (5), each shoulder is provided with a plurality of oil grooves (1), and two adjacent oil grooves (1) are separated by a set central angle on the same shoulder; on adjacent shoulders, the oil grooves (1) are staggered with each other, the openings of the oil grooves (1) below the first shoulder and the middle shoulder are consistent, and the openings of the oil grooves (1) above the third shoulder and the middle shoulder are also consistent; p1The high-pressure oil inlet pipe (2) is connected with the oil groove (1), and the other end of the oil groove (1) is respectively connected with an oil return port I (8), an oil return port II (11), an oil port I (9) and an oil port II (10); the oil port I (9) and the oil port II (10) are respectively communicated with an upper cavity oil pipe (14) and a lower cavity oil pipe (12), P2A high-pressure oil inlet pipe (13) is connected with the middle cavity of the vibrator; the impactor shell (15) is connected with an upper offset oil groove (16) and a lower offset oil groove (19), the upper offset oil groove (16) is positioned at the side of an upper cavity of a hydraulic vibrator, the lower offset oil groove (19) is positioned at the side of a lower cavity of the hydraulic vibrator, a vibrator piston (17) is connected with a piston rod (18) and positioned inside the impactor shell (15), the vibrator piston (17) is contacted with the impactor shell (15), the hydraulic vibrator is divided into an upper cavity part, a middle cavity part and a lower cavity part by the vibrator piston (17), the lower end of the piston rod (18) is provided with an impact head (20), the impact head (20) is contacted with a double-motor rotary power head, a guide sleeve (23) is contacted with the impact head (20), a conical roller bearing (31) is contacted with a sliding key sleeve (28), a first bearing cover (32) and a second bearing cover (33) are contacted with a lower, positioning the bearing;
the double-motor rotary power head comprises a main shaft (34), a hydraulic motor I (21) and a hydraulic motor II (22); the hydraulic motor I (21) and the hydraulic motor II (22) are respectively fixed through a bearing (27) and drive a gear shaft (30) to rotate directionally, the gear shaft (30) drives a large gear (29) to rotate, the large gear (29) drives a sliding key sleeve (28) to rotate through a flat key (26), the sliding key sleeve (28) drives a main shaft to rotate through the sliding key, the sliding key assembly is arranged between the sliding key sleeve (28) and the main shaft (34), and the main shaft (34) can slide up and down in the sliding key sleeve, so that the vibration force is effectively transmitted to a lower drill rod; downward exciting force generated by the hydraulic vibrator acts on the upper end of the main shaft (34), and the main shaft (34) is transmitted to a drill bit through a drill rod; the gland (25) is connected with the impactor shell (15) and the top cover (24) to seal the cavity;
the lower end of a power head main shaft (34) is connected with a drill rod and a drill bit, the power head drives the drill rod and the drill bit to rotate and downwards feed and pressurize, and an impact head of a vibrator is pressed on the main shaft (34) of the power head; under the drive of high-pressure oil, the vibrator piston (17) generates high-frequency up-and-down vibration, and the vibration force of the piston is transmitted to the main shaft (34), the drill rod and the drill bit through the impact head, so that the high-frequency vibration rotary drilling of the drill bit is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022313230.7U CN213359983U (en) | 2020-10-17 | 2020-10-17 | Hydraulic high-frequency vibration rotary power head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022313230.7U CN213359983U (en) | 2020-10-17 | 2020-10-17 | Hydraulic high-frequency vibration rotary power head |
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| CN213359983U true CN213359983U (en) | 2021-06-04 |
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| CN202022313230.7U Active CN213359983U (en) | 2020-10-17 | 2020-10-17 | Hydraulic high-frequency vibration rotary power head |
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