CN112648247B - Confluence logic combined action hydraulic valve group - Google Patents
Confluence logic combined action hydraulic valve group Download PDFInfo
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- CN112648247B CN112648247B CN202011480225.3A CN202011480225A CN112648247B CN 112648247 B CN112648247 B CN 112648247B CN 202011480225 A CN202011480225 A CN 202011480225A CN 112648247 B CN112648247 B CN 112648247B
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- 230000009471 action Effects 0.000 title claims description 58
- 239000002131 composite material Substances 0.000 claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 238000005553 drilling Methods 0.000 claims description 30
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 230000006870 function Effects 0.000 abstract description 63
- 230000010354 integration Effects 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 description 10
- 238000007667 floating Methods 0.000 description 8
- 238000005065 mining Methods 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000006837 decompression Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001141 propulsive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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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
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
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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
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
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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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
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- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The valve bank comprises four parts, namely an oil inlet and motor reversing block, two integrated valve blocks and a feeding oil cylinder reversing block, wherein the four parts are connected through bolts and sealing rings. The oil inlet joint completes the oil supply of a main oil way and performs overpressure protection through an overflow valve arranged on the oil inlet joint, and the handle reversing joint controls the forward and reverse rotation function and the misoperation protection function of an external execution element motor; the shuttle valve introduces corresponding working oil into the control oil way, and the handle reversing valve completes clamping function conversion; the feeding oil cylinder reversing block is used for controlling the reversing of the feeding oil cylinder and controlling the stretching out and the retracting of the feeding oil cylinder; the stop valve is used for manual on-off of the corresponding oil way, the hydraulic control one-way valve is used for selective control of the flow direction of the oil way, the adjustable throttle valve is used for adjusting the pressure and the flow of the oil way, and the slide valve is used for completing required composite functions, special functions and the like. The invention solves the problems of low integration level of a control unit, lack of system protection function, complex pipeline, large occupied space, complex operation, high difficulty, low energy utilization, high energy consumption, high cost and the like in the prior art.
Description
Technical Field
The invention belongs to the technical field of drilling machinery, and particularly relates to a confluence logic composite action hydraulic valve bank for a mining hydraulic drilling machine.
Technical Field
At present, a hydraulic control mode adopted in the operation control of a mining drilling machine can meet the use requirements, but the operation control handles are more, the operation steps are multiple, and in addition, the drilling machine needs to realize more functional requirements and lacks of a protection function of misoperation, so that the operation is complex in the working process, and the misoperation is easy to occur, so that unnecessary equipment and drilling tool damage and other faults are caused, and even safety production accidents occur. Meanwhile, too many operation units occupy large equipment space, the system connecting pipelines are complex, energy consumption loss is increased, fault points of the hydraulic system are increased, the troubleshooting difficulty is increased, and the manufacturing, maintenance and repair cost is increased. The method has the problems of low integration level of the control unit, complex operation, low working efficiency, high energy consumption, insufficient system protection and the like.
Disclosure of Invention
The invention aims to provide a confluence logic combined action hydraulic valve group, which solves the problems of low integration level of a control unit, lack of system protection function, complex pipeline, large occupied space, complex operation, high difficulty, low energy utilization, high energy consumption, high cost and the like in the prior art.
The technical scheme adopted by the invention is as follows:
a confluence logic combined action hydraulic valve group comprises a main pump oil inlet and an auxiliary pump oil inlet, wherein the main pump oil inlet is divided into two branches, one branch is connected with a motor reversing valve, the other branch returns to a main oil return port through a main oil path overflow valve, and the main pump oil inlet is provided with a main oil path pressure measuring port;
the motor reversing valve is divided into four branches, wherein one branch returns to the main oil return port, and the other three branches respectively correspond to oil outlets in a front position, a middle position and a rear position;
the front oil outlet is divided into two paths, one path is communicated with a forward rotation interface of the motor through a first two-position three-way valve, the other path is connected to a first shuttle valve, and then the two paths are divided from the first shuttle valve, wherein one path enters the chuck oil inlet through a first one-way valve and can be selected whether to be communicated with a clamp releasing port of the clamp holder through the reversing of the clamping and rotating composite action conversion valve, the other path controls the first two-position two-way valve to reverse after flowing to the sequence valve through a second shuttle valve, and the feeding oil cylinder is in a floating state;
the middle oil outlet is communicated to a reversing valve of the feeding oil cylinder;
the back oil outlet is divided into two paths, one path is communicated with a reverse interface of the motor through a two-position three-way valve II, the other path is communicated with a clamp holder pressurizing port, meanwhile, the clamp-rotating composite action conversion valve selects the disconnection of the chuck oil inlet and the clamp holder loosening port, the motor rotates reversely, otherwise, the motor does not rotate;
the first two-position three-way valve and the second two-position three-way valve are both communicated with the clamping and rotating composite action change-over valve;
the oil inlet of the auxiliary pump is divided into three branches, wherein two branches are respectively connected to a main oil return port through a first overflow valve and a second overflow valve, the other branch is divided into two sub-paths, one sub-path is communicated with a middle oil outlet of the motor reversing valve through a second check valve and a second clamp function valve in sequence, one path of oil is divided from the clamp function valve and enters an oil inlet of the chuck, the other sub-path is communicated with the middle oil outlet of the motor reversing valve in sequence through a pressure reducing valve and a third check valve, namely the two sub-paths are converged with the main oil path and enter the reversing valve of the feeding oil cylinder; meanwhile, the oil way through the check valve III is communicated with the reversing valve of the feeding oil cylinder through the check valve IV;
the reversing valve of the feeding oil cylinder is divided into three oil ways which respectively correspond to oil outlets at a front position, a middle position and a rear position; the front oil outlet is divided into three branches, one branch is communicated with a drilling function position of the drilling start function valve, and then two sub-paths are divided, one sub-path is communicated with a clamp releasing opening of a clamp through a clamping and rotating composite action conversion valve, the other sub-path is communicated with an oil inlet of a chuck through a one-way valve five, the other branch sequentially passes through a shuttle valve III, a shuttle valve II, a sequence valve and a two-position two-way valve I and then enters an oil cylinder push-in opening, the holding function of the feeding oil cylinder is relieved by controlling the two-position two-way valve I to change, and the oil cylinder pulling opening is communicated with a speed regulating valve to reduce the oil return speed so as to complete the slow feeding of the drilling function;
the middle oil outlet returns to the main oil return port;
the back position oil outlet is divided into two branches, one branch is communicated with a drilling function position of the drilling starting function valve, and then is respectively communicated with the hydraulic control one-way valve and the two-position two-way valve.
Furthermore, a manual stop valve is arranged on an oil path between the clamping and rotating composite action conversion valve and the clamping opening of the clamping device.
Furthermore, a throttle valve is arranged between the hydraulic control one-way valve and the first oil drainage port.
Further, an auxiliary oil way pressure measuring port is arranged at an oil inlet of the auxiliary pump; a pressure reduction propulsion pressure measuring port is arranged at an oil outlet at the middle position of the motor reversing valve; an oil return pressure measuring port is arranged at the main oil return port; and a motor rotation pressure measuring port is arranged on an oil way of the first shuttle valve through the first check valve.
Further, a chuck pressure measuring port is arranged on the chuck oil way; the oil circuit of the clamp is provided with a pressure measuring port of the clamp.
Further, a hydraulic control pressure measuring port is arranged on the two-position two-way valve II; a cylinder sequential action pressure measuring port is arranged between the two-position two-way valve I and the sequence valve; a pushing pressure measuring port is arranged at the pushing port of the oil cylinder; and a pull-out pressure measuring port is arranged at the pull-out port of the oil cylinder.
Furthermore, an oil drain port II is formed in each of the sequence valve and the two-position two-way valve I.
Has the advantages that:
the hydraulic valve group has two oil inlet paths of a main oil path and an auxiliary oil path, the auxiliary oil path is merged with the main oil path through the valve group after completing other actions, the energy waste is reduced, the performance of a system is improved, the valve group has a logic linkage function, the operation is simplified, the efficiency is improved, the valve group has the functions of drilling protection, rod detaching floating, no-load throttling pressurization and load throttling cancellation, all oil is used for the function of the valve group during drilling, the valve group is cut off from other auxiliary functions to effectively prevent misoperation, the hydraulic valve group has the functions of slow advance and fast retreat during drilling, fast advance and slow retreat during pulling, and the valve group also has the composite logic functions of clamping and rotating linkage, tripping and drilling linkage, loosening and clamping and anti-rotating linkage, and the like, and has the advantages of high drilling efficiency, simple and easy learning operation, high integration level of the valve group, small volume, simple pipeline, high reliability, low cost, convenient arrangement and the like.
Drawings
FIG. 1 is a front view of the present invention
FIG. 2 is an overall front perspective view of the present invention
FIG. 3 is a perspective view of the bottom of the present invention
FIG. 4 is a hydraulic schematic diagram of the valve bank of the present invention
(1) An oil inlet joint of the split valve and a handle reversing joint; (2) -an integration valve block i; (3) a split valve handle reversing connection; (4) -an integration valve block ii;
1. a main oil way overflow valve, 2, a motor reversing valve, 3, a first shuttle valve, 4, a clamping function valve, 5, a second check valve, 6, a third check valve, 7, a pressure reducing valve, 8, a first overflow valve, 9, a second overflow valve, 10, a fourth check valve, 11, a feed cylinder reversing valve, 12, a clamping and rotating composite action switching valve, 13, a manual stop valve, 14, a hydraulic control check valve, 15, a throttle valve, 16, a first check valve, 17, a fifth check valve, 18, a drilling start function valve, 19, a second two-position two-way valve, 20, a speed regulating valve, 21, a third shuttle valve, 22, a first two-position two-way valve, 23, a sequence valve, 24, a second shuttle valve, 25, a first two-position three-way valve, 26, a second three-way valve, A1, a forward rotation interface of the motor, A2, an oil cylinder pushing port, B1, a reverse rotation interface of a motor, B2, an oil cylinder pulling port, C1, a clamp pressurizing port, C2, a chuck oil inlet, D, a clamp loosening port, P, a main pump oil inlet, P1, an auxiliary pump oil inlet, T, a main oil return port, T1, an oil drainage port I, T2, an oil drainage port II, M, a main oil way pressure measuring port, M1, an auxiliary oil way pressure measuring port, M2, a pressure reducing pushing pressure measuring port, M3, an oil return pressure measuring port, M4, a motor rotation pressure measuring port, M5, a chuck pressure measuring port, M6, a clamp pressure measuring port, M7, a hydraulic control pressure measuring port, M8, an oil cylinder sequential action pressure measuring port, M9, a pushing pressure measuring port, M10, a pulling pressure measuring port.
Detailed Description
The invention is described in detail below with reference to the drawings and the detailed description.
Referring to fig. 1-4, the invention integrates two paths of power oil input, integrates a work control unit into a valve group, and utilizes the logic cooperation of a cartridge valve to complete the composite action and the protection function during work.
The valve bank is a valve bank consisting of four parts, namely (1) an oil inlet and motor reversing block, (2) an integrated valve block I, (3) a feeding oil cylinder reversing block and (4) an integrated valve block II. (1) And the four parts (2), (3) and (4) are connected and combined through bolts and sealing rings. The valve group is characterized in that:
(1) the oil inlet linkage completes oil supply of a main oil way and performs overpressure protection through an overflow valve arranged on the oil inlet linkage, and the handle reversing linkage controls the positive and negative rotation function and the misoperation protection function of an external execution element motor;
(2) the oil circuit integration is carried out on a shuttle valve, a handle reversing valve, two check valves, two safety overflow valves and a pressure reducing valve through a valve block, the valve locking function is that corresponding working oil is introduced into a control oil circuit when a motor works, the handle reversing valve completes clamping function conversion, the check valves realize the one-way circulation function of the corresponding oil circuit, one safety overflow valve is used for overpressure protection of oil inlet of an auxiliary oil circuit, the other safety overflow valve realizes the overflow feeding function of the auxiliary oil circuit, and the pressure reducing valve is used for the pressure reducing feeding function of the auxiliary oil circuit;
(3) the feeding oil cylinder reversing block is used for controlling the reversing of the feeding oil cylinder and controlling the stretching out and the retracting of the feeding oil cylinder;
(4) a stop valve, two handle reversing valves, two one-way valves, a hydraulic control one-way valve, two adjustable throttle valves, two shuttle valves and three hydraulic control slide valves are integrated in an oil way through a valve block, the stop valve is used for manual on-off function corresponding to the oil way, the two one-way valves are used for selection corresponding to the flow direction of the oil way, the hydraulic control one-way valve is used for selective control of the flow direction of the oil way, the adjustable throttle valves are used for adjustment of pressure and flow of the oil way, the shuttle valves are used for introduction of control oil, and the slide valves are used for sequential logical diversion under the action of the control oil to complete required composite functions, special functions and the like.
The specific connection relation of the invention is as follows:
a confluence logic combined action hydraulic valve group comprises a main pump oil inlet P and an auxiliary pump oil inlet P1, wherein the main pump oil inlet P is divided into two branches, one branch is connected with a motor reversing valve 2, the other branch returns to a main oil return port T through a main oil way overflow valve 1, and the main pump oil inlet P is provided with a main oil way pressure measuring port M;
the motor reversing valve 2 is divided into four branches, wherein one branch returns to the main oil return port T, and the other three branches respectively correspond to oil outlets in a front position, a middle position and a rear position;
the front oil outlet is divided into two paths, one path is communicated with a forward rotation interface A1 of the motor through a two-position three-way valve I25, the other path is connected to a shuttle valve I3, and then two paths are divided from the shuttle valve I3, wherein one path enters a chuck oil inlet C2 through a one-way valve I16 and can be selected to be communicated with a clamp releasing port D of a clamp through the reversing of a clamping and rotating composite action change-over valve 12, the motor is communicated with the forward rotation, otherwise, the motor cannot rotate, the other path flows to a sequence valve 23 through a shuttle valve II 24 and then controls the two-position two-way valve I22 to reverse, and the feeding oil cylinder is in a floating state;
the middle oil outlet is communicated to a feed oil cylinder reversing valve 11;
the rear oil outlet is divided into two paths, one path is communicated with a reverse interface B1 of the motor through a two-position three-way valve II 26, the other path is communicated with a clamp holder pressurization port C1, meanwhile, a clamp-rotating composite action conversion valve 12 selects a chuck oil inlet C2 port to be disconnected with a clamp holder loosening port D, the motor reverses, and otherwise, the motor does not rotate;
the two-position three-way valve I25 and the two-position three-way valve II 26 are both communicated with the clamping and rotating compound action conversion valve 12;
the oil inlet P1 of the auxiliary pump is divided into three branches, wherein two branches are respectively connected to a main oil return port T through an overflow valve I8 (for setting pressure overflow protection for an auxiliary oil path) and an overflow valve II 9 (for adjusting feeding pressure during overflow propulsion), the other branch is divided into two sub-paths, one sub-path is communicated with a middle oil outlet of the motor reversing valve 2 through a check valve II 5 and a clamping function valve 4 (for switching over overflow propulsion and pressure reduction propulsion functions, and the handle is in overflow propulsion when being in a middle position; meanwhile, the oil way passing through the check valve III 6 is communicated with the reversing valve 11 of the feeding oil cylinder through the check valve IV 10;
the reversing valve 11 of the feeding oil cylinder is divided into three oil ways which respectively correspond to oil outlets at a front position, a middle position and a rear position; the front oil outlet is divided into three branches, one branch (confluence oil) is communicated to a drilling function position of a drilling function valve 18, and then two branches are divided, one branch is communicated with a clamp releasing port D of a clamp through a clamp rotating composite action conversion valve 12, the other branch is communicated with a chuck oil inlet C2 through a one-way valve five 17, the other branch (confluence oil) sequentially passes through a shuttle valve three 21, a shuttle valve 24, a sequence valve 23 and a two-position two-way valve one 22 and then enters an oil cylinder pushing port A2, the two-position two-way valve one 22 is controlled to be reversed to release the holding function of a feeding oil cylinder, and an oil cylinder pulling port B2 is communicated with a speed regulating valve 20 to reduce the oil return speed so as to complete the slow feeding of the drilling function;
the middle oil outlet returns to the main oil return port T to completely return all the oil passing through the valve,
the rear oil outlet (interflow oil) is divided into two branches, one branch is communicated with a lower (drilling) function position of the drilling raising function valve 18 and then is communicated with the hydraulic control one-way valve 14 and the two-position two-way valve two 19 respectively, the hydraulic control one-way valve 14 is controlled to open the two-position two-way valve two 19, interflow oil enters the oil cylinder lifting opening B2 by removing the throttling function through the two-position two-way valve two 19, meanwhile, the holding function of the feeding oil cylinder is removed in a reversing mode through the shuttle valve three 21, the shuttle valve two 24 and the sequence valve 23 by controlling the two-position two-way valve one 22, at the moment, as the hydraulic control one-way valve 14 opens the chuck oil inlet C2 and releases oil drainage from the clamping opening D of the clamp, the clamp clamping chuck of the clamp is released, and the oil cylinder is quickly lifted.
A manual stop valve (13) is further arranged on an oil path between the clamping and rotating compound action conversion valve (12) and the clamping opening (D) of the clamp holder, and a throttle valve (15) is arranged between the hydraulic control one-way valve (14) and the oil drainage opening I (T1).
An auxiliary oil way pressure measuring port M1 is formed in an oil inlet P1 of the auxiliary pump; a pressure reduction propulsion pressure measuring port M2 is arranged at a middle oil outlet of the motor reversing valve 2; an oil return pressure measuring port M3 is formed in the main oil return port T; a motor rotation pressure measuring port M4 is arranged on an oil path of the shuttle valve I3 through the one-way valve I16, and a chuck pressure measuring port M5 is arranged on a chuck oil path; a clamp pressure measuring port M6 is arranged on the clamp oil way, and a hydraulic control pressure measuring port M7 is arranged on the two-position two-way valve II 19; an oil cylinder sequential action pressure measuring port M8 is arranged between the two-position two-way valve I22 and the sequence valve 23; a pushing pressure measuring port M9 is arranged at a pushing port of the oil cylinder; the cylinder pull-out opening B2 is provided with a pull-out pressure measuring opening M10.
And a second oil drainage port T2 is arranged on the sequence valve 23 and the first two-position two-way valve 22.
The working process of the invention is as follows:
the motor corotation and corotation protection, the P port oil, the handle of the motor change-over valve 2 is pushed forward, the P port oil leads to the two-position three-way valve 25, the branch oil is divided into two paths after passing through the shuttle valve 3, one path of the oil is divided into two paths by the shuttle valve 24 and the sequence valve 23 to push the two-position two-way valve 22 to change over so that the feeding oil cylinder is in a floating state, the other path of the oil passes through the one-way valve 16 to the clamping and rotating composite action change-over valve 12, if the handle of the clamping and rotating composite action change-over valve 12 is in a middle position, the clamping and rotating composite action are separated, at the moment, the oil is communicated with the C2 port to clamp and clamp, the clamp is clamped, the two-position three-way valve 25 cannot change over, the oil from the P port to the A1 port is cut off, the main oil path overflow valve 1 overflows, the motor does not rotate, the corotation protection is completed, because the corotation at the moment can cause the damage of the chuck, the two-position three-way valve 25 and the clamp, the three-way valve 26 and the clamp are pulled after clamping and the handle of the composite action change-over valve 12 is clamped, the clamping and the opening of the clamping and the motor is released.
The motor rotates reversely and protects reversely, the P port is filled with oil, the handle of the motor reversing valve 2 is pulled backwards, the P port oil is led to the two-position three-way valve II 26, one path of oil is communicated with the C1 port and the clamp force of the clamp is increased and is divided into two paths after passing through the shuttle valve I3, one path of oil is communicated with the shuttle valve II 24 and the sequence valve 23 to push the two-position two-way valve I22 to reverse so that the feeding oil cylinder is in a floating state, the other path of oil is communicated with the clamping and rotating composite action switching valve 12 through the one-way valve I16, if the handle of the clamping and rotating composite action switching valve 12 is in a middle position, the clamping and rotating composite action are separated, at the moment, the oil and the C2 port are communicated with the chuck to clamp, the clamp is used for pressurizing and clamping the clamp, oil from a P port to a B1 port is communicated, the motor rotates reversely and is used for the function of loosening a screw thread of a drill rod unloading rod, if the handle of the clamping and rotating composite action conversion valve 12 is pulled backwards, the clamping and rotating composite action function is realized, at the moment, the oil at the position of the clamping and rotating composite action conversion valve 12 is communicated with the D port when the C2 port is communicated, the two-position three-way valve 25 and the two-position three-way valve 26 are controlled to change direction, the chuck clamps, the clamp clamps loose, the oil from the P port to the B1 port is cut off by the two-position three-way valve 26, the main oil way overflow valve 1 overflows, the motor does not rotate, and the reverse protection rod-falling-preventing event occurs.
The overflow propulsion function is suitable for the industrial and mining industries with small motor rotation torque and large propulsion, the clamping functional valve 4 needs to be positioned at the middle position, the oil inlet at the P1 port is directly led to the reversing valve 11 of the feeding oil cylinder through the clamping functional valve 4 to be supplied to the feeding oil cylinder, and the propulsion pressure can be controlled by manually adjusting the overflow valve II 9 to complete the overflow propulsion function.
Decompression propulsion function, it is big to be applicable to motor gyration moment of torsion, the industry and mining that the propulsive force is little, clamping function valve back-pull 4, overflow valve two 9 hands are transferred to pressure and are the highest, P1 mouth oil feed this moment gets into the feeding hydro-cylinder 11 feeding hydro-cylinder through relief pressure valve 7 and three 6 check valves, can adjust propulsive pressure through adjusting the relief pressure valve hand wheel this moment, and P1 mouth oil has the highest pressure to act on the chuck simultaneously, make the chuck have higher clamp force and satisfy big moment of torsion work industry and mining.
When drilling down, the drilling up and withdrawing compound action is carried out, firstly, the handle of the switching valve 18 with the drilling up function is pushed forward to be positioned at the drilling down function position, the handle of the switching valve 12 with the clamping and rotating compound action is pulled backwards to be positioned at the clamping and rotating compound action position, the oil in the port P1 is selected to be in an overflow propulsion or decompression propulsion state according to industrial and mining, the handle of the motor reversing valve 2 is pushed forward, the oil in the port P enters a chuck through a first shuttle valve 3 and a first one-way valve 16 to a port C2 and enters a gripper through a first clamping and rotating compound action switching valve 12 to a port D and is reversed by controlling a first two-way valve 25 and a second two-way valve 26, the oil in the port P3 is also reversed to be positioned in a throttling and floating state by controlling a first two-way valve 22 through a second shuttle valve 24 and a sequence valve 23, the motor starts to rotate forward, the handle of the reversing valve 11 of the feeding oil cylinder is pushed forward to be combined with the oil from the switching valve 18 with the first one-way valve 16 through the first one-way valve 17, one path of oil enters the shuttle valve II 24 through the shuttle valve III 21 to the shuttle valve II 24 and enters the shuttle valve II 24 through the shuttle valve I3 to be converged, high-pressure clamping is selected to ensure reliability, at the moment, A2 oil enters the oil cylinder to move in a propelling mode, B2 return oil returns to a T port through the speed regulating valve 20, at the moment, the flow rate of the P port is mostly used for motor rotation, pressure oil of a feeding oil cylinder is from a small flow rate P1, meanwhile, oil return throttling and speed regulating are carried out, the propelling speed is relatively slow, after the drilling-down slow speed is propelled to the proper position, the oil cylinder is withdrawn, a handle of a motor reversing valve 2 is placed in a middle position to stop the motor rotation, a handle of a feeding oil cylinder reversing valve 11 is placed in a middle position to be pulled back, at the moment, oil merged at the P port and the P1 port is communicated with the B2 through the feeding oil cylinder reversing valve 11, one path of oil opens a hydraulic control one-way valve 14 and a two-way valve 19 through a drill-starting function switching valve 18, so that a chuck is loosened, a clamp is clamped, the speed regulating valve 20 is relieved, and the functions of the speed regulating valve 20 are released, and at the same time, and one path of the one-way of oil passes through the shuttle valve III 21, and the shuttle valve III, the shuttle valve II 24, the sequence valve control 23 and the two-position two-way valve I22 are communicated, the feeding oil cylinder is quickly retracted to a designated position under the condition of confluence large flow and no throttling, and the slow propelling and quick retracting process of drilling and the compound action of a motor, a chuck, a clamp and the feeding oil cylinder are completed;
when the drill is started, the push and pull actions are combined, firstly, the handle of the drill tripping function change-over valve 18 is pulled backwards to enable the drill tripping function change-over valve to be in a drill tripping function position, the handle of the clamping and rotating compound action change-over valve 12 is pulled backwards to be in a clamping and rotating compound action position, oil in a port P1 is in an overflow push or pressure reduction push state according to industrial and mining selection, if the feeding oil cylinder is close to the end of a clamp at the moment, the handle of the motor reversing valve 2 is pushed forwards, oil in the port P enters a chuck through a first shuttle valve 3 and a first one-way valve 16 to a port C2 and enters the clamp through a first clamping and rotating compound action change-over valve 12 to a port D, the two-position three-way valve 25 and a second three-way valve 26 are controlled to reverse, the oil in the first shuttle valve 3 is also in a throttling floating state through a second shuttle valve 24 and a sequence valve 23 to control 22 to reverse the feeding oil cylinder, the motor starts to rotate forwards, the handle of the feeding oil cylinder reversing valve 11 is pulled backwards, at the moment, the port P is communicated with the B2 through the feeding oil cylinder reversing valve 11 through a speed regulating valve 20, one path of oil enters from the drill tripping function change-over valve 18 through a five check valve 17 to join with a first check valve 16, the other path of oil enters from a third shuttle valve 21 to a second shuttle valve 24 to join with a first shuttle valve 3 to a second shuttle valve 24, high-pressure clamping is selected to ensure reliability, the oil is communicated with a port C2 and a port D, a chuck is controlled to clamp and a clamp is controlled to release, meanwhile, one path of oil controls a first two-position two-way valve 22 to be communicated through the third shuttle valve 21, the second shuttle valve 24 and a sequence valve 23, a feeding oil cylinder slowly pulls out a drill rod to a specified stroke, a handle of a reversing valve 11 of the feeding oil cylinder is placed in a middle position, a handle of a reversing valve 2 of a motor is placed in the middle position, the pulling of the rod is further completed, the handle of the reversing valve 11 of the feeding oil cylinder is pushed forwards, at the moment, the confluence oil of the port P and the port P1 is communicated with the port A2 through the reversing valve 11 of the feeding oil cylinder, one path of oil opens a one check valve 14 and a second two-way valve 19 through the drill tripping function change-over valve 18, the chuck is loosened, the clamping of the clamping device is realized, the functions of the speed regulating valve 20 are released, meanwhile, one path of oil controls the connection of the two-position two-way valve one 22 through the shuttle valve three 21, the shuttle valve two 24 and the sequence valve 23, the feeding oil cylinder is quickly propelled to the near end of the chuck and the clamping device under the condition of high flow rate of confluence and no throttling, and the quick propelling and slow pulling process of the drill pulling and the composite action of the motor, the chuck, the clamping device and the feeding oil cylinder are completed;
the rod unloading and thread loosening function is realized, the clamp and the chuck are respectively positioned at two ends of a drill rod connecting port and can be carried out, the handle of a drill pipe lifting function switching valve 18 is pulled back to a drill lifting position, the middle position of a clamping and rotating composite action switching valve 12 is in a composite action separation state, a feed cylinder reversing valve 11 is in the middle position, the handle of a motor reversing valve 2 is driven to be pulled back, at the moment, oil in a port P is fed into a motor B1 from A1 through a two-position three-way valve II 26 through the motor reversing valve II, the oil returns from A1 through a two-position three-way valve I25 to a T port motor and is reversed, meanwhile, oil in a path passes through a shuttle valve I3 to a one-way valve I16 and a shuttle valve II 24 and is led to a C2 port chuck clamp and the clamp, the oil in the shuttle valve II 24 controls a two-way valve I22 to open the oil cylinder to be in throttling and floating through a sequence valve II 23, the feed cylinder can be moved passively when the drill rod threads are loosened when the drill rod threads are reversely rotated by the motor, the drill rod threads, the clamp force is protected from being not damaged, one path of high-pressure oil in the port P is communicated with the C1 to increase the clamp, and the clamp accident of the clamp can be reliably prevented from falling off.
Claims (7)
1. A confluence logic combined action hydraulic valve set is characterized by comprising a main pump oil inlet (P) and an auxiliary pump oil inlet (P1), wherein the main pump oil inlet (P) is divided into two branches, one branch is connected with a motor reversing valve (2), the other branch returns to a main oil return port (T) through a main oil way overflow valve (1), and the main pump oil inlet (P) is provided with a main oil way pressure measuring port (M);
the motor reversing valve (2) is divided into four paths, wherein one path returns to the main oil return port (T), and the other three paths respectively correspond to oil outlets at the front position, the middle position and the rear position;
the front oil outlet of the motor reversing valve (2) is divided into two paths, one path is communicated with a forward rotation connector (A1) of the motor through a two-position three-way valve I (25), the other path is connected to a shuttle valve I (3), two branches are divided from the shuttle valve I (3), one branch enters a chuck oil inlet (C2) through a one-way valve I (16) and can be communicated with a clamp releasing opening (D) through the reversing selection of a clamping and rotating composite action conversion valve (12), the other branch controls the reversing of the two-position two-way valve I (22) after flowing to a sequence valve (23) through a shuttle valve II (24), and a feed oil cylinder is in a pressure relief state;
a middle oil outlet of the motor reversing valve (2) is communicated to a reversing valve (11) of the feeding oil cylinder;
the rear oil outlet of the motor reversing valve (2) is divided into three paths, wherein one path is communicated with a reverse interface (B1) of the motor through a two-position three-way valve (26), and the other path is communicated with a clamp holder pressurization port (C1); the other branch is connected to a first shuttle valve (3), two branches are divided from the first shuttle valve (3), one branch enters a chuck oil inlet (C2) through a first check valve (16) and can be communicated with a clamp releasing port (D) through reversing of a clamping and rotating composite action switching valve (12), the other branch controls a first two-position two-way valve (22) to reverse after flowing to a sequence valve (23) through a second shuttle valve (24), and a feeding oil cylinder is in a pressure relief state;
the two-position three-way valve I (25) and the two-position three-way valve II (26) are both communicated with the clamping and rotating composite action conversion valve (12);
an oil inlet (P1) of the auxiliary pump is divided into three branches, wherein two branches are connected to a main oil return port (T) through a first overflow valve (8) and a second overflow valve (9) respectively, the other branch is divided into two sub-paths, one sub-path is communicated with a middle oil outlet of a motor reversing valve (2) through a second check valve (5) and a clamp functional valve (4) in sequence, one sub-path of oil is divided from the clamp functional valve (4) and enters a chuck oil inlet (C2), the other sub-path is communicated with the middle oil outlet of the motor reversing valve (2) through a pressure reducing valve (7) and a third check valve (6) in sequence, and the two sub-paths are converged with the main oil path and enter a feeding oil cylinder reversing valve (11); meanwhile, the oil way passing through the check valve III (6) is communicated with a reversing valve (11) of the feeding oil cylinder through a check valve IV (10);
the reversing valve (11) of the feeding oil cylinder is divided into three oil ways which respectively correspond to oil outlets at a front position, a middle position and a rear position; the front oil outlet of the reversing valve (11) of the feeding oil cylinder is divided into two paths: one branch is communicated to a drill-down function position of a drill-up function valve (18), and then two branches are divided, wherein one branch is communicated with a clamp loosening opening (D) of a clamp through a clamping and rotating composite action conversion valve (12), and the other branch is communicated with a chuck oil inlet (C2) through a five-way valve (17); the other path of the oil cylinder enters the oil cylinder feeding inlet (A2) after passing through a shuttle valve III (21), a shuttle valve II (24), a sequence valve (23) and a two-position two-way valve I (22) in sequence, an oil cylinder pulling opening (B2) is communicated with a speed regulating valve (20) to return to a main oil return opening (T), and the speed regulating valve (20) is regulated to reduce the oil return speed so as to complete the slow feeding of the drilling function;
an oil outlet in the middle position of the reversing valve (11) of the feeding oil cylinder returns to the main oil return port (T);
the oil outlet at the rear position of the reversing valve (11) of the feeding oil cylinder is divided into three paths: one branch is communicated with a drilling function position of the drilling start function valve (18), and then two branches are divided, wherein one branch is communicated with a chuck oil inlet (C2) through a hydraulic control one-way valve (14), and the other branch is communicated with a two-position two-way valve (19); the other path of the oil enters an oil cylinder drawing opening (B2) through a two-position two-way valve II (19); and the other path of the drill pipe passes through a shuttle valve III (21), a shuttle valve II (24), a sequence valve (23) and a two-position two-way valve I (22) in sequence and then is communicated with a feeding oil cylinder to an inlet (A2) and returns to a main oil return port (T), so that the function of drilling is completed, and new drill pipes are rapidly pulled up and added.
2. A confluence logic combined action hydraulic valve block as claimed in claim 1, wherein a manual cut-off valve (13) is further provided on the oil path between the clamp-to-turn combined action switching valve (12) and the clamp release port (D).
3. A confluence logic combined action hydraulic valve group as claimed in claim 1, wherein a throttle valve (15) is provided between the pilot operated check valve (14) and the first oil drain port (T1).
4. A confluence logic combined action hydraulic valve group according to claim 1, wherein an auxiliary oil line pressure measuring port (M1) is provided at the oil inlet (P1) of the auxiliary pump; a pressure reducing propulsion pressure measuring port (M2) is arranged at a middle oil outlet of the motor reversing valve (2); an oil return pressure measuring port (M3) is arranged at the main oil return port (T); and a motor rotation pressure measuring port (M4) is arranged on an oil way of the shuttle valve I (3) through the check valve I (16).
5. A confluence logic combined action hydraulic valve group according to claim 1, wherein a chuck pressure measuring port (M5) is provided at the chuck oil inlet (C2); the oil circuit of the clamp is provided with a pressure measuring port (M6) of the clamp.
6. A confluence logic combined action hydraulic valve group as claimed in claim 1, wherein a hydraulic control pressure measuring port (M7) is provided on the two-position two-way valve two (19); an oil cylinder sequential action pressure measuring port (M8) is arranged between the two-position two-way valve I (22) and the sequence valve (23); a pushing pressure measuring port (M9) is arranged at a pushing port of the oil cylinder; a pull-out pressure measuring port (M10) is arranged at the pull-out port (B2) of the oil cylinder.
7. A confluence logic combined action hydraulic valve group as claimed in claim 1, wherein a second oil drain port (T2) is provided on both the sequence valve (23) and the first two-position two-way valve (22).
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| CN113847295B (en) * | 2021-10-18 | 2023-11-10 | 中煤科工集团重庆研究院有限公司 | Hydraulic control system and control method for coal mine linkage drilling machine |
| CN114109947A (en) * | 2021-10-25 | 2022-03-01 | 保定优佰协力电子科技有限公司 | Mining confluence valve |
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