CN111502565B - Automatic rod connecting and disassembling hydraulic control system and drilling machine power head - Google Patents
Automatic rod connecting and disassembling hydraulic control system and drilling machine power head Download PDFInfo
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- CN111502565B CN111502565B CN202010344199.5A CN202010344199A CN111502565B CN 111502565 B CN111502565 B CN 111502565B CN 202010344199 A CN202010344199 A CN 202010344199A CN 111502565 B CN111502565 B CN 111502565B
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- 238000005553 drilling Methods 0.000 title claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 claims abstract description 20
- 239000003921 oil Substances 0.000 claims description 140
- 230000001276 controlling effect Effects 0.000 claims description 21
- 239000010720 hydraulic oil Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- MXWJVTOOROXGIU-UHFFFAOYSA-N atrazine Chemical group CCNC1=NC(Cl)=NC(NC(C)C)=N1 MXWJVTOOROXGIU-UHFFFAOYSA-N 0.000 abstract 1
- 210000001503 joint Anatomy 0.000 abstract 1
- 230000006837 decompression Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000605 extraction Methods 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
- E21B19/16—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
- E21B19/16—Connecting or disconnecting pipe couplings or joints
- E21B19/165—Control or monitoring arrangements therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Engineering & Computer Science (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides an automatic rod connecting and disconnecting hydraulic control system and a drilling machine power head, wherein the automatic rod connecting and disconnecting hydraulic control system comprises: the oil outlets of the rotary hydraulic pump and the propelling hydraulic pump are respectively connected with an electric proportional pressure regulating valve in parallel; a first electric proportional reversing valve is arranged between the propulsion oil cylinder and the propulsion hydraulic pump, two working oil ports of the first electric proportional reversing valve are respectively communicated with a rod cavity and a rodless cavity of the propulsion oil cylinder through a proportional pressure reducing overflow valve, and the proportional pressure reducing overflow valve is used for adjusting overflow pressure to balance the dead weight and the frictional resistance of a power head of a drilling machine; and a second electric proportional reversing valve is arranged between the rotary motor and the rotary hydraulic pump, and two working oil ports of the second electric proportional reversing valve are respectively communicated with an oil inlet and an oil outlet of the rotary motor. The setting of electric proportion air-vent valve can balance the dead weight and the frictional resistance of rig unit head, realizes that the hydro-cylinder is not atred, alleviates the damage to the butt joint unloading pole screw thread, and control is simple.
Description
Technical Field
The invention relates to the technical field of raise boring machines, in particular to a hydraulic control system for an automatic rod connecting and disconnecting machine and a power head of a boring machine.
Background
The auxiliary time for connecting and disconnecting the drill rod in the construction process of the raise boring machine influences the speed of the operation efficiency. The hydraulic pneumatic control of the traditional rod connecting and disconnecting device has two modes, wherein the first mode is that a manual reversing valve of a propulsion oil cylinder is manually operated to realize propulsion and reverse lifting, meanwhile, the manual reversing valve of a rotary motor is manually operated to realize forward rotation and reverse rotation, and the rod connecting and disconnecting can be realized by controlling the speed, although the operation is simple, the rod connecting and disconnecting quality depends on the proficiency of operators; in the second mode, an electric reversing valve is adopted to replace a manual reversing valve, so that automatic propulsion and reverse lifting of a propulsion oil cylinder and automatic forward rotation and reverse rotation of a rotary motor are realized, the electric control operation handle is more flexible, one-key automatic rod connection and disconnection can be realized, two handles are not required to be matched with the rod connection and disconnection simultaneously, the programming and automation of the rod connection and disconnection can be realized, when the environment changes and parameters need to be adjusted, the skill requirement on an operator is higher, and if the related parameters are not adjusted in time, the threads of a drill rod can be damaged.
Therefore, a hydraulic control system capable of automatically connecting and disconnecting the rod and avoiding damaging the thread of the drill rod is needed.
Disclosure of Invention
In order to solve the problems, the invention provides an automatic rod connecting and disconnecting hydraulic control system and a drilling machine power head, which can realize automatic rod connecting and disconnecting and avoid damage to the threads of a drill rod.
In order to achieve the above object, the present invention provides a hydraulic control system for automatically attaching and detaching a lever, comprising: the system comprises a rotary motor, a rotary hydraulic pump for supplying oil to the rotary motor, a propulsion oil cylinder and a propulsion hydraulic pump for supplying oil to the propulsion oil cylinder, wherein oil outlets of the rotary hydraulic pump and the propulsion hydraulic pump are respectively connected with an electric proportional pressure regulating valve in parallel and used for regulating system pressure of the propulsion oil cylinder and the rotary motor; a first electric proportional reversing valve for controlling the reversing of the propulsion oil cylinder is further arranged between the propulsion oil cylinder and the propulsion hydraulic pump, two working oil ports of the first electric proportional reversing valve are respectively communicated with a rod cavity and a rodless cavity of the propulsion oil cylinder through a proportional pressure reducing overflow valve, and the proportional pressure reducing overflow valve is used for adjusting overflow pressure to balance the self weight and the frictional resistance of a power head of a drilling machine; and a second electric proportional reversing valve used for controlling the reversing of the rotary hydraulic pump is also arranged between the rotary motor and the rotary hydraulic pump, and two working oil ports of the second electric proportional reversing valve are respectively communicated with an oil inlet and an oil outlet of the rotary motor and used for controlling the reversing of the rotary motor.
Furthermore, the electric proportional pressure regulating valve is a direct-acting proportional overflow valve and is used for setting different system pressures under different working conditions of drilling and connecting and disconnecting rods and preventing the system pressure from exceeding a limit value.
Further, the overflow pressure of the electric proportional pressure regulating valve is regulated by controlling the current of the electromagnet at the end part of the electric proportional pressure regulating valve.
Further, the first electric proportional reversing valve and the second electric proportional reversing valve are both three-position four-way reversing valves.
Further, when the first electric proportional reversing valve is in the first working position, hydraulic oil can enter the rod cavity of the propulsion oil cylinder, when the first electric proportional reversing valve is in the second working position, hydraulic oil can enter the rodless cavity of the propulsion oil cylinder, and when the first electric proportional reversing valve is in the third working position, the hydraulic oil is in a middle pressure maintaining state.
Furthermore, when the second electric proportional reversing valve is in the first working position, hydraulic oil can enter the first oil port of the rotary motor and rotate forwards, when the second electric proportional reversing valve is in the second working position, hydraulic oil can enter the second oil port of the rotary motor and rotate backwards, and when the second electric proportional reversing valve is in the third working position, the hydraulic oil is in a middle pressure maintaining state.
Further, the rotation speed of the rotation motor is controlled by the current magnitude of the proportional electromagnet at the two ends of the second electric proportional reversing valve.
Further, the proportional pressure reducing overflow valve is an electromagnetic proportional overflow pressure reducing valve.
Further, the overflow pressure of the proportional pressure reducing overflow valve is adjusted by controlling the current of a proportional electromagnet at the end part of the proportional pressure reducing overflow valve.
The invention also provides a drilling machine power head which comprises a drilling machine power head hydraulic control system, wherein the drilling machine power head hydraulic control system is specifically any one of the automatic rod connecting and disassembling hydraulic control systems.
Due to the adoption of the technical scheme, the invention has the beneficial effects that:
according to the automatic rod connecting and disconnecting hydraulic control system, two working oil ports of a first electric proportional reversing valve used for controlling reversing of a propulsion oil cylinder are respectively communicated with a rod cavity and a rodless cavity of the propulsion oil cylinder through a proportional pressure reducing overflow valve, so that different pressures of the two cavities of the propulsion oil cylinder can be set, and then the pressure of the two cavities is multiplied by the area difference of the cross section of an oil cylinder piston to calculate the stress difference of the two cavities of the propulsion oil cylinder, so that the self weight and the frictional resistance of a power head of a drilling machine are balanced, the piston of the propulsion oil cylinder is in a floating state, at the moment, only a rotary motor needs to be controlled to rotate in the rod connecting and disconnecting process, and the propulsion oil cylinder automatically follows the rod connecting and disconnecting action, so that the damage of a drill rod thread is avoided. Compared with the traditional rod connecting and disconnecting mode of simultaneously and actively controlling the propulsion oil cylinder and the rotary motor, the invention does not need to match the running speeds of the propulsion oil cylinder and the rotary motor, and the invention actively controls the propulsion oil cylinder to follow the action by the rotary motor, thereby avoiding the hidden trouble of damaging connecting threads caused by matching errors of the propulsion oil cylinder and the rotary motor in the traditional mode. Compared with the traditional oil cylinder floating control (see attached figure 2), when the reversing valve is in the middle position, two cavities of the propulsion oil cylinder respectively return oil, and the propulsion oil cylinder can freely move under the action of external force, but the method is only suitable for the condition that the load borne by the oil cylinder is light, the self weight of the power head of the drilling machine is large, the screw thread of a drill rod is easily damaged, and the oil cylinder floating mode is suitable for the condition of heavy load.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;
FIG. 1 is a schematic diagram of an automatic make-and-break rod hydraulic control system according to the present invention;
FIG. 2 is a schematic diagram of a conventional hydraulic control principle of cylinder floating;
fig. 3 is a perspective illustration of a drill head of the present invention:
the reference numbers are as follows:
1. a rotary motor; 11. a first oil port; 12. a second oil port; 2. a rotary hydraulic pump; 3. a propulsion cylinder; 31. a piston rod; 32. a cylinder barrel; 4. a propulsion hydraulic pump; 5. an electric proportional pressure regulating valve; 6. a first electrically proportional reversing valve; 61. a first proportional electromagnet; 62. a second proportional electromagnet; 7. a second electrically proportional reversing valve; 71. a third proportion electromagnet; 72. a fourth proportional electromagnet; 8. a reverse extraction proportional pressure reducing overflow valve; 81. a fifth proportion electromagnet; 9. a proportional pressure reducing overflow valve is pushed; 91. and a sixth proportion electromagnet.
010. A base; 011. a guide post; 012. a gear case; 013. a drill stem; 014. a manipulator; 015. and (4) inserting plates.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators such as the first, second, upper, lower, left, right, front and rear … … in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The invention will be further described with reference to the following figures:
example 1:
referring to fig. 1, the invention provides an automatic rod receiving and discharging hydraulic control system, which comprises a rotary motor 1, a rotary hydraulic pump 2 for supplying oil to the rotary motor 1, a propulsion oil cylinder 3 and a propulsion hydraulic pump 4 for supplying oil to the propulsion oil cylinder 3, wherein oil outlets of the rotary hydraulic pump 2 and the propulsion hydraulic pump 4 are respectively connected in parallel with an electric proportional pressure regulating valve 5 for respectively regulating system pressures of the propulsion oil cylinder 3 and the rotary motor 1; a first electric proportional reversing valve 6 for controlling the reversing of the propulsion oil cylinder 3 is also arranged between the propulsion oil cylinder 3 and the propulsion hydraulic pump 4, and a second electric proportional reversing valve 7 for controlling the reversing of the rotary hydraulic pump 2 is also arranged between the rotary motor 1 and the rotary hydraulic pump 2; two working oil ports of the second electric proportional reversing valve 7 are respectively communicated with an oil inlet and an oil outlet of the rotary motor 1 and are used for controlling the reversing of the rotary motor 1; two working oil ports of a first electric proportional reversing valve 6 are respectively communicated with a rod cavity and a rodless cavity of a propulsion oil cylinder 3 through a proportional pressure reducing overflow valve, the proportional pressure reducing overflow valve is used for adjusting overflow pressure to balance the self weight and the frictional resistance of a power head of a drilling machine, specifically, the proportional pressure reducing overflow valve 8 is connected with the rodless cavity of the propulsion oil cylinder 3 and is connected with the rod cavity of the propulsion oil cylinder 3 through a propulsion proportional pressure reducing overflow valve 9, so that different pressures of the two cavities of the propulsion oil cylinder can be set, the difference of the bearing force of the two cavities of the propulsion oil cylinder is calculated by multiplying the pressure of the two cavities by the area difference of the cross section of a piston of the oil cylinder, the difference of the bearing force of the two cavities of the propulsion oil cylinder is used for balancing the self weight and the frictional resistance of the power head of the drilling machine, and the piston of the propulsion oil cylinder is in a floating state, at the moment, only a rotary motor needs to be controlled to rotate in the process of connecting and disconnecting the rod, thereby avoiding damage to the drill rod threads.
As a preferred embodiment, the electric proportional pressure regulating valve 5 is a direct-acting proportional overflow valve and is used for setting different system pressures under different working conditions of drilling and connecting and disconnecting rods and preventing the system pressure from exceeding a limit value; the overflow pressure of the electric proportional pressure regulating valve 5 is regulated by controlling the current of the electromagnet at the end part of the electric proportional pressure regulating valve.
In a preferred embodiment, the first electro-proportional directional valve 6 and the second electro-proportional directional valve 7 are three-position four-way directional valves.
Specifically, when the first electric proportional directional valve 6 is at the first working position, the oil inlet P is communicated with the second working oil port B, and the oil return port T is communicated with the first working oil port a, so that high-pressure hydraulic oil can enter the rod cavity of the thrust cylinder 3, and low-pressure oil in the rodless cavity flows back to the oil tank, and the thrust cylinder 3 retracts; when the first electric proportional reversing valve 6 is at the second working position, the oil inlet P of the first electric proportional reversing valve is communicated with the first working oil port A, the oil return port T is communicated with the second working oil port B, high-pressure hydraulic oil can enter a rodless cavity of the propulsion oil cylinder 3, low-pressure oil in the rod cavity flows back to the oil tank, and the propulsion oil cylinder 3 extends out; when the first electric proportional reversing valve is located at the third working position, the oil inlet P and the oil return port T are not communicated with the first working oil port A and the second working oil port B, so that hydraulic oil in the thrust cylinder 3 is in a middle pressure maintaining state.
Specifically, when the second electric proportional directional valve 7 is in the first working position, the oil inlet P is communicated with the second working oil port B, and the oil return port T is communicated with the first working oil port a, so that high-pressure hydraulic oil can enter the first oil port 11 of the rotary motor 1 and rotate forward; when the second electric proportional reversing valve is in the second working position, the oil inlet P of the second electric proportional reversing valve is communicated with the first working oil port A, the oil return port T is communicated with the second working oil port B, and high-pressure hydraulic oil can enter the second oil port 12 of the rotary motor 1 and reversely rotate; when the second electric proportional reversing valve is located at the third working position, the oil inlet P and the oil return port T are not communicated with the first working oil port A and the second working oil port B, so that hydraulic oil in the rotary motor 1 is in a middle pressure maintaining state.
In a preferred embodiment, the advancing or reversing speed of the advancing cylinder 3 is controlled by the current magnitude of the first proportional electromagnet 61 and the second proportional electromagnet 62 at two ends of the first electric proportional reversing valve 6.
As a preferred embodiment, the revolution speed of the revolution motor 1 is controlled by the magnitude of the currents of the third proportional electromagnet 71 and the fourth proportional electromagnet 72 across the second electrically proportional reversing valve 7.
In a preferred embodiment, the proportional pressure reducing relief valve is an electromagnetic proportional relief pressure reducing valve, and specifically in this embodiment, the reverse proportional pressure reducing relief valve 8 and the advancing proportional pressure reducing relief valve 9 are both electromagnetic proportional relief pressure reducing valves, and the relief pressure of the reverse proportional pressure reducing relief valve 8 is adjusted by controlling the magnitude of the current of the fifth proportional electromagnet 81 provided at the end thereof, and the relief pressure of the advancing proportional pressure reducing relief valve 9 is adjusted by controlling the magnitude of the current of the sixth proportional electromagnet 81 provided at the end thereof.
The automatic rod connecting and disconnecting operation process of the drill power head is as follows:
firstly, respectively adjusting electric proportional pressure regulating valves 5 arranged at oil outlets of a rotary hydraulic pump 2 and a pushing hydraulic pump 4 to enable system pressure to reach a rod connecting and disconnecting state;
when the rod is connected, the control center simultaneously sends electric signals to the first proportional electromagnet 61 of the first electric proportional reversing valve 6 and the third proportional electromagnet 71 of the second electric proportional reversing valve 7 (namely, the first electric proportional reversing valve 6 and the second electric proportional reversing valve 7 are respectively positioned at the first working position), the rotating speed of the rotating motor 1 is determined by the current of the third proportional electromagnet 71, at this time, the oil source of the propulsion liquid pump 4 is reversed by the first electric proportional reversing valve 6 and then is decompressed by the propulsion proportional decompression overflow valve 9 (the decompression pressure is determined by the current of the sixth proportional electromagnet 91 of the propulsion decompression overflow valve 9), and then enters the rod cavity of the propulsion oil cylinder 3, and simultaneously the oil return pressure of the rodless cavity of the propulsion oil cylinder 3 is adjusted by the reverse proportional decompression overflow valve 8 (the adjusting pressure is determined by the current of the fifth proportional electromagnet 81 of the reverse decompression overflow valve 8), and oil return is carried out under the adjusting pressure, at the moment, the decompression pressure set by the propulsion decompression overflow valve 9 is multiplied by the area of a rod cavity, the dead weight of the power head is added, the pressure is slightly larger than the pressure of a rodless cavity set by the reverse pressure relief overflow valve 8, multiplied by the pressure of the rodless cavity and added by the frictional resistance, the propulsion oil cylinder 3 can slowly descend in a free state, and after the rotary motion contacts a drill rod, the propulsion oil cylinder 3 automatically matches the rotary speed and is screwed into the thread of the drill rod to complete the operation of connecting the rod.
When the rod is unloaded, the control center simultaneously sends electric signals to the second proportional electromagnet 62 of the first electric proportional reversing valve 6 and the fourth proportional electromagnet 72 of the second electric proportional reversing valve 7 (namely, the first electric proportional reversing valve 6 and the second electric proportional reversing valve 7 are respectively positioned at the second working position), the rotating speed of the rotating motor 1 is determined by the current of the fourth proportional electromagnet 72, at this time, the oil source of the propulsion liquid 4 is reversed by the first electric proportional reversing valve 6 and then is decompressed by the reverse-lifting proportional decompression overflow valve 8 (the decompression pressure is determined by the current of the fifth proportional electromagnet 81 of the reverse-lifting decompression overflow valve 8), and then enters the rodless cavity of the propulsion oil cylinder 3, meanwhile, the oil return pressure of the rod cavity of the propulsion oil cylinder 3 is adjusted by the propulsion proportional decompression overflow valve 9 (the adjustment pressure is determined by the current of the sixth proportional electromagnet 91 of the propulsion decompression overflow valve 9), and oil return is carried out under the adjustment pressure, at the moment, the decompression pressure set by the reverse lifting decompression overflow valve 8 is multiplied by the area of a rodless cavity, the pressure is slightly larger than the pressure of a rod cavity set by the propulsion decompression overflow valve 9, the pressure of the rod cavity is multiplied by the pressure of the rod cavity, the self weight and the friction force of the power head are added, the propulsion oil cylinder 3 can slowly rise in a free state at the moment, and when the power head rotates reversely, the propulsion oil cylinder 3 automatically matches the rotation speed to screw out the threads of the drill rod, so that the rod unloading work is completed.
Example 2:
referring to fig. 3, the invention further provides a drilling machine power head, which comprises a drilling machine power head hydraulic control system, wherein the drilling machine power head hydraulic control system is specifically any one of the automatic rod connecting and disconnecting hydraulic control systems; the power head of the drilling machine comprises a base 010, a propulsion oil cylinder 3, a guide column 011, a rotary motor 1 and a gear box 012, wherein the base 010 is fixed on a foundation so as to keep the stability of the whole machine during drilling, reduce the shaking and improve the drilling precision; the push cylinder 3 piston rod 31 and the guide column 011 are fixed on the base 010 to form a four-column guide mechanism, a push cylinder 3 cylinder barrel 32, a rotary motor 1 and a gear box 012 are assembled together to form a power head, the power head is connected with a drill rod 013 through threads, the manipulator 014 is used for grabbing and carrying the drill rod 013 for use, the plugboard 015 is fixed on the base 010, the power head is inserted into a clamping groove of the drill rod 013 to fix the drill rod 013 through movement of the plugboard cylinder, the power head finishes rod receiving and unloading work through up-and-down movement of the push cylinder 3 cylinder barrel 32 along the guide mechanism and rotation of the rotary motor 1, specifically, the push cylinder 3 pushes downwards and the rotary motor 1 rotates forwards to work as a connecting rod, and the push cylinder 3 lifts upwards and the rotary motor 1 rotates backwards to work as an unloading rod.
The invention relates to an automatic rod connecting and disconnecting hydraulic control system, wherein two working oil ports of a first electric proportional reversing valve 6 for controlling the reversing of a propulsion oil cylinder 3 are respectively communicated with a rod cavity and a rodless cavity of the propulsion oil cylinder 3 through a proportional pressure reducing overflow valve, so that different pressures of the two cavities of the propulsion oil cylinder 3 can be set, and then the pressure of the two cavities is multiplied by the area difference of the cross section of an oil cylinder piston to calculate the stress difference of the two cavities of the propulsion oil cylinder 3, so as to balance the dead weight and the frictional resistance of a power head of a drilling machine, so that the piston of the propulsion oil cylinder 3 is in a floating state, at the moment, only a rotary motor 1 needs to be controlled to rotate in the rod connecting and disconnecting process, and the propulsion oil cylinder 3 automatically follows the rod connecting and disconnecting action, so that the damage of a drill rod thread is avoided. Compared with the traditional rod connecting and disconnecting mode of simultaneously and actively controlling the propulsion oil cylinder and the rotary motor, the operation speed of the propulsion oil cylinder 3 and the rotary motor 1 does not need to be matched, the invention actively controls the propulsion oil cylinder 3 through the rotary motor 1, and the propulsion oil cylinder 3 follows the action in a driven manner, thereby avoiding the hidden trouble of damaging the connecting thread caused by the matching error of the two in the traditional mode. Compared with the traditional oil cylinder floating control (see attached figure 2), when the reversing valve is in the middle position, two cavities of the propulsion oil cylinder respectively return oil, and the propulsion oil cylinder can freely move under the action of external force, but the method is only suitable for the condition that the load borne by the oil cylinder is light, the self weight of the power head of the drilling machine is large, the screw thread of a drill rod is easily damaged, and the oil cylinder floating mode is suitable for the condition of heavy load.
The foregoing is a detailed description of the invention, and specific examples are used herein to explain the principles and implementations of the invention, the above description being merely intended to facilitate an understanding of the principles and core concepts of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides an automatic connect and unload pole hydraulic control system which characterized in that includes: the hydraulic system comprises a rotary motor, a rotary hydraulic pump for supplying oil to the rotary motor, a propulsion oil cylinder and a propulsion hydraulic pump for supplying oil to the propulsion oil cylinder, wherein oil outlets of the rotary hydraulic pump and the propulsion hydraulic pump are respectively connected with an electric proportional pressure regulating valve in parallel; a first electric proportional reversing valve for controlling the reversing of the propulsion oil cylinder is further arranged between the propulsion oil cylinder and the propulsion hydraulic pump, two working oil ports of the first electric proportional reversing valve are respectively communicated with a rod cavity and a rodless cavity of the propulsion oil cylinder through a proportional pressure reducing overflow valve, and the proportional pressure reducing overflow valve is used for adjusting overflow pressure to balance the self weight and the frictional resistance of a power head of a drilling machine; a second electric proportional reversing valve for controlling the reversing of the rotary hydraulic pump is also arranged between the rotary motor and the rotary hydraulic pump, and two working oil ports of the second electric proportional reversing valve are respectively communicated with an oil inlet and an oil outlet of the rotary motor and are used for controlling the reversing of the rotary motor; in the rod receiving and unloading process, the rotary motor is controlled to rotate, and the propulsion oil cylinder automatically follows the rod receiving and unloading action.
2. The automatic rod connecting and disconnecting hydraulic control system according to claim 1, wherein the first electrically proportional reversing valve and the second electrically proportional reversing valve are three-position four-way reversing valves.
3. The automatic rod connecting and disconnecting hydraulic control system according to claim 2, wherein when the first electric proportional directional valve is in the first working position, hydraulic oil can enter the rod chamber of the propulsion cylinder, when the first electric proportional directional valve is in the second working position, hydraulic oil can enter the rodless chamber of the propulsion cylinder, and when the first electric proportional directional valve is in the third working position, the hydraulic control system is in an intermediate pressure maintaining state.
4. The automatic rod connecting and disconnecting hydraulic control system according to claim 2 or 3, wherein when the second electric proportional directional control valve is in the first working position, hydraulic oil can enter a first oil port of the rotary motor and rotate forward, when the second electric proportional directional control valve is in the second working position, hydraulic oil can enter a second oil port of the rotary motor and rotate backward, and when the second electric proportional directional control valve is in the third working position, the hydraulic control system is in an intermediate pressure maintaining state.
5. The automatic rod connecting and disconnecting hydraulic control system according to claim 4, wherein the rotation speed of said rotation motor is controlled by the magnitude of the proportional electromagnet current across said second electrically proportional reversing valve.
6. The automatic rod connecting and disconnecting hydraulic control system according to any one of claims 1, 2, 3 and 5, wherein the proportional pressure reducing relief valve is an electromagnetic proportional relief pressure reducing valve.
7. An automatic rod connecting and disconnecting hydraulic control system according to claim 6, wherein the relief pressure of said proportional pressure reducing relief valve is adjusted by controlling the magnitude of the proportional solenoid current provided at the end thereof.
8. The automatic rod connecting and disconnecting hydraulic control system according to any one of claims 1, 2, 3 and 5, wherein the electric proportional pressure regulating valve is a direct-acting proportional overflow valve.
9. The automatic rod connecting and disconnecting hydraulic control system according to any one of claims 1, 2, 3 and 5, wherein the overflow pressure of the electric proportional pressure regulating valve is regulated by controlling the magnitude of the current of an electromagnet at the end part of the electric proportional pressure regulating valve.
10. A drill power head, characterized in that it comprises a drill power head hydraulic control system, in particular an automatic rod-receiving hydraulic control system according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010344199.5A CN111502565B (en) | 2020-04-27 | 2020-04-27 | Automatic rod connecting and disassembling hydraulic control system and drilling machine power head |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010344199.5A CN111502565B (en) | 2020-04-27 | 2020-04-27 | Automatic rod connecting and disassembling hydraulic control system and drilling machine power head |
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| CN111502565A CN111502565A (en) | 2020-08-07 |
| CN111502565B true CN111502565B (en) | 2022-04-08 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201915870U (en) * | 2011-01-04 | 2011-08-03 | 安徽铜冠机械股份有限公司 | Semi-automatic stem connecting and disassembling mechanism for drill stem of drilling machine |
| CN202833391U (en) * | 2012-09-25 | 2013-03-27 | 无锡金帆钻凿设备股份有限公司 | Top drive type drilling machine power head linear motion hydraulic control system |
| CN103410717A (en) * | 2013-07-16 | 2013-11-27 | 山河智能装备股份有限公司 | Hydraulic drill carriage air compressor system unloading control device and method |
| CN204284043U (en) * | 2014-10-31 | 2015-04-22 | 徐州徐工施维英机械有限公司 | A kind of hydraulic control system and pump |
| CN107906084A (en) * | 2017-10-27 | 2018-04-13 | 中国铁建重工集团有限公司 | Rock drill and its hydraulic pressure drilling control system |
| CN109236765A (en) * | 2018-12-10 | 2019-01-18 | 中国铁建重工集团有限公司 | Drill jumbo and its Thrust Hydraulic Control System |
| CN110307196A (en) * | 2019-07-29 | 2019-10-08 | 中国铁建重工集团股份有限公司 | A kind of horizontal core drilling rig and its propulsion hydraulic system |
-
2020
- 2020-04-27 CN CN202010344199.5A patent/CN111502565B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201915870U (en) * | 2011-01-04 | 2011-08-03 | 安徽铜冠机械股份有限公司 | Semi-automatic stem connecting and disassembling mechanism for drill stem of drilling machine |
| CN202833391U (en) * | 2012-09-25 | 2013-03-27 | 无锡金帆钻凿设备股份有限公司 | Top drive type drilling machine power head linear motion hydraulic control system |
| CN103410717A (en) * | 2013-07-16 | 2013-11-27 | 山河智能装备股份有限公司 | Hydraulic drill carriage air compressor system unloading control device and method |
| CN204284043U (en) * | 2014-10-31 | 2015-04-22 | 徐州徐工施维英机械有限公司 | A kind of hydraulic control system and pump |
| CN107906084A (en) * | 2017-10-27 | 2018-04-13 | 中国铁建重工集团有限公司 | Rock drill and its hydraulic pressure drilling control system |
| CN109236765A (en) * | 2018-12-10 | 2019-01-18 | 中国铁建重工集团有限公司 | Drill jumbo and its Thrust Hydraulic Control System |
| CN110307196A (en) * | 2019-07-29 | 2019-10-08 | 中国铁建重工集团股份有限公司 | A kind of horizontal core drilling rig and its propulsion hydraulic system |
Non-Patent Citations (1)
| Title |
|---|
| 潜孔钻机接卸杆方式分析;汪鹏程;《有色金属(矿山部分)》;20190525(第03期);第85-88、91页 * |
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