CN112253569A - Hydraulic control valve of tunneling machine-mounted drilling machine and control method - Google Patents
Hydraulic control valve of tunneling machine-mounted drilling machine and control method Download PDFInfo
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- CN112253569A CN112253569A CN202011289796.9A CN202011289796A CN112253569A CN 112253569 A CN112253569 A CN 112253569A CN 202011289796 A CN202011289796 A CN 202011289796A CN 112253569 A CN112253569 A CN 112253569A
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- 238000005553 drilling Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000005641 tunneling Effects 0.000 title description 2
- 239000003245 coal Substances 0.000 abstract description 4
- 230000010354 integration Effects 0.000 description 8
- 238000009412 basement excavation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
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Classifications
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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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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- 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
- 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
- F15B13/024—Pressure relief valves
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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
- F15B13/027—Check valves
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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
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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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30505—Non-return valves, i.e. check valves
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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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/3056—Assemblies of multiple valves
- F15B2211/3059—Assemblies of multiple valves having multiple valves for multiple output members
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- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Pressure Circuits (AREA)
- Earth Drilling (AREA)
Abstract
The invention belongs to the technical field of hydraulic control of coal mine mechanical equipment, and particularly relates to a hydraulic control valve of a drilling machine carried by a heading machine and a control method. The oil inlets of a check valve I and an overflow valve II are communicated with an oil inlet U2 of the valve body, the oil inlets of a check valve V and an overflow valve I are communicated with an oil inlet U1 of the valve body, the oil outlets of the overflow valve I and the overflow valve II are communicated with an oil drainage port T, and the oil outlets of the check valve I and the check valve V are communicated with a port P of a three-position four-way reversing valve; oil inlets of the one-way valve II and the one-way valve III are respectively communicated with oil inlets W1 and W2 of the valve body, and an oil outlet of the one-way valve II, an oil outlet of the one-way valve III, an oil outlet of the one-way valve IV and an oil inlet of the hydraulic control one-way valve are communicated with an oil outlet X2 of the valve body; the port A of the three-position four-way reversing valve is communicated with an oil inlet of the one-way valve IV and an oil outlet X1 of the valve body, and the port B of the three-position four-way reversing valve is communicated with a port K of the hydraulic control one-way valve.
Description
Technical Field
The invention belongs to the technical field of hydraulic control of coal mine mechanical equipment, and particularly relates to a hydraulic control valve of a drilling machine carried by a heading machine and a control method.
Background
Along with the development of integration and integration of the underground fully-mechanized excavation equipment of the coal mine, the excavation and exploration integrated machine is more and more applied, a drilling machine is mounted on a heading machine, integration is realized, and the production efficiency is improved. But the space is compact after the integration, and the linkage action of the drilling machine is more, and the hydraulic control is more complicated. The existing common method is to select a plurality of hydraulic valves to connect through pipelines to hydraulically control the onboard drilling machine of the heading machine, and the method has the inevitable problems of complex pipelines, more fault points, large occupied space, inconvenient operation and the like, and influences the performance of the efficiency of the integrated digging and exploring machine.
Disclosure of Invention
The invention provides a hydraulic control valve of a machine-mounted drilling machine of a heading machine and a control method thereof, aiming at solving the problems of complex pipelines, more fault points, large occupied space and inconvenient operation of the hydraulic control mode of the machine-mounted drilling machine of the existing heading machine.
The invention adopts the following technical scheme: a hydraulic control valve of a drilling machine carried by a heading machine comprises a valve body, wherein a check valve I, a three-position four-way reversing valve, a ball valve, a check valve II, a check valve III, a check valve IV, a hydraulic control check valve, an adjustable throttle valve, a check valve V, an overflow valve I and an overflow valve II are arranged in the valve body, the valve body is provided with an oil inlet U1, an oil inlet U2, an oil inlet W1, an oil inlet W1, an oil outlet X1, an oil outlet X2 and an oil drain port T, the oil inlets of the check valve I and the overflow valve II are communicated with an oil inlet U2 of the valve body, the oil inlets of the check valve V and the overflow valve I are communicated with an oil inlet U1 of the valve body, the oil outlets of the overflow valve I and the overflow valve II are communicated with the; oil inlets of the one-way valve II and the one-way valve III are respectively communicated with oil inlets W1 and W2 of the valve body, and an oil outlet of the one-way valve II, an oil outlet of the one-way valve III, an oil outlet of the one-way valve IV and an oil inlet of the hydraulic control one-way valve are communicated with an oil outlet X2 of the valve body; the port A of the three-position four-way reversing valve is communicated with an oil inlet of the one-way valve IV and an oil outlet X1 of the valve body, and the port B of the three-position four-way reversing valve is communicated with the port K of the hydraulic control one-way valve; the oil outlet of the hydraulic control one-way valve is communicated with the oil drainage port T of the valve body through the adjustable throttle valve, and the oil return ports of the overflow valve I, the overflow valve II and the three-position four-way valve are communicated with the T port of the valve body.
Further, the valve body is also provided with a pressure measuring port M1 and a pressure measuring port M2, an oil outlet of the one-way valve I, an oil outlet of the one-way valve V and a port P of the three-position four-way reversing valve are communicated with the pressure measuring port M2; the oil outlet of the one-way valve II, the oil outlet of the one-way valve III, the oil outlet of the one-way valve IV and the oil inlet of the hydraulic control one-way valve are communicated with a pressure measuring port M1.
Further, a ball valve is arranged between the port A of the three-position four-way reversing valve and the oil outlet X1.
A control method of a hydraulic control valve of an onboard drilling machine of a heading machine comprises the steps that according to different working states of the onboard drilling machine of the heading machine, when a three-position four-way reversing valve is in the right position, a port P and a port A are communicated, a port B and a port T are communicated, when a feeding oil cylinder moves forwards and a motor does not rotate, pressure oil enters a clamp holder and a chuck through the port P and the port A of the three-position four-way valve, the clamp holder is opened, the chuck is clamped, and the drilling machine is in a drilling; when the feeding oil cylinder moves forward and the motor rotates forwards, pressure oil enters the holder and the chuck through the port P and the port A of the three-position four-way reversing valve, the holder is kept open, and the chuck is kept clamped and is in a drilling state; when the feeding oil cylinder retreats and the motor rotates forwards, pressure oil enters the clamp holder and the chuck through the port P and the port A of the three-position four-way reversing valve, the clamp holder is kept open, and the chuck is kept clamped, so that the drilling machine is in a drilling state.
When the three-position four-way reversing valve is in a left position, the port P and the port B are communicated, the port A is communicated with the port T, when the feeding oil cylinder retreats and the motor does not rotate, pressure oil passes through the port P and the port B of the three-position four-way valve and reaches the control port of the hydraulic control one-way valve, the hydraulic control one-way valve is opened, the pressure oil of the chuck returns to an oil tank through the hydraulic control one-way valve and the oil drainage port of the valve body, the chuck is loosened, meanwhile, the pressure oil of the clamp returns to the oil tank through the port A of the three-position four-way valve and the; when the oil cylinder stops acting and the motor rotates reversely, pressure oil enters the clamp holder through the one-way valve, and the clamp holder clamps the pressure oil, so that the rod unloading state of the drilling machine is realized; when the oil cylinder moves forward and the motor does not rotate, pressure oil of the chuck returns to the oil tank through the hydraulic control one-way valve and the oil drain port of the valve body, and the chuck is loosened to be in a drilling-out and rod-reversing state.
Compared with the prior art, the integrated valve bank conforming to the control of the onboard drilling machine of the excavator is designed by adopting the high-reliability threaded cartridge valve and the plate valve, and the threaded cartridge valve has small leakage, long service life and low price; the valve body has simple structure and is easy to process; the all actions of the onboard drilling machine of the common development machine can be met, the occupied space is small, the high integration is realized, and the pipeline is simple. The control valve of the onboard drilling machine of the heading machine can be widely applied to integration of heading machines and drilling machines of various models, improves the integration level, improves the production efficiency and has wide application prospect.
Drawings
FIG. 1 is a hydraulic schematic of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a side view of FIG. 2;
in the figure: the hydraulic control valve comprises a valve body 1, a check valve body 2, a check valve I, a check valve 3, a three-position four-way reversing valve 4, a ball valve 5, a check valve II, a check valve III, a check valve 7, a check valve IV, a hydraulic control check valve 8, an adjustable throttle valve 9, a check valve V10, an overflow valve I and an overflow valve II 12.
Detailed Description
As shown in fig. 1, a hydraulic control valve of a drilling machine carried by a heading machine comprises a valve body 1, wherein a check valve I2, a three-position four-way reversing valve 3, a ball valve 4, a check valve II5, a check valve III6, a check valve IV7, a hydraulic control check valve 8, an adjustable throttle valve 9, a check valve V10, an overflow valve I11 and an overflow valve II12 are arranged in the valve body 1, the valve body 1 is provided with an oil inlet U1, an oil inlet U2, an oil inlet W1, an oil inlet W1, an oil outlet X1, an oil outlet X2 and an oil drain port T, oil inlets of the check valve I2 and the overflow valve II12 are communicated with an oil inlet U2 of the valve body 1, oil inlets of the check valve V10 and the overflow valve I11 are communicated with an oil inlet U2 of the valve body 1, oil outlets of the overflow valve I11 and the overflow valve II12 are communicated with the oil drain port T, and; oil inlets of the one-way valve II5 and the one-way valve III6 are respectively communicated with oil inlets W1 and W2 of the valve body, an oil outlet of the one-way valve II5, an oil outlet of the one-way valve III6, an oil outlet of the one-way valve IV7 and an oil inlet of the hydraulic control one-way valve 8 are communicated with an oil outlet X2 of the valve body 1; the port A of the three-position four-way reversing valve 3 is communicated with an oil inlet of a one-way valve IV7 and an oil outlet X1 of the valve body 1, and the port B of the three-position four-way reversing valve 3 is communicated with the port K of a hydraulic control one-way valve 8; an oil outlet of the hydraulic control one-way valve 8 is communicated with an oil drainage port T of the valve body 1 through the adjustable throttle valve 9, and oil return ports of the overflow valve I11, the overflow valve II12 and the three-position four-way valve 3 are communicated with the T port of the valve body 1.
The valve body 1 is also provided with a pressure measuring port M1 and a pressure measuring port M2, an oil outlet of a one-way valve I2, an oil outlet of a one-way valve V10 and a P port of the three-position four-way reversing valve 3 are communicated with the pressure measuring port M2; an oil outlet of the one-way valve II5, an oil outlet of the one-way valve III6, an oil outlet of the one-way valve IV7 and an oil inlet of the hydraulic control one-way valve 8 are communicated with a pressure measuring port M1.
A ball valve 4 is arranged between the port A of the three-position four-way reversing valve 3 and the oil outlet X1.
A control method of a hydraulic control valve of an onboard drilling machine of a heading machine comprises the following steps that according to different working states of the onboard drilling machine of the heading machine, when a three-position four-way reversing valve 3 is in a right position, a port P and a port A are communicated, a port B and a port T are communicated, when a feeding oil cylinder moves forwards and a motor does not rotate, pressure oil enters a clamp holder and a chuck through the port P and the port A of the three-position four-way valve, the clamp holder is opened, the chuck is clamped, and the drilling machine is in a; when the feeding oil cylinder moves forward and the motor rotates forwards, pressure oil enters the holder and the chuck through the 3P port and the A port of the three-position four-way reversing valve, the holder is kept open, and the chuck is kept clamped and is in a drilling state; when the feeding oil cylinder retreats and the motor rotates forwards, pressure oil enters the clamp holder and the chuck through the 3P port and the A port of the three-position four-way reversing valve, the clamp holder is kept open, and the chuck is kept clamped, so that the drilling machine is in a drilling state. A
When the three-position four-way reversing valve 3 is in a left position, the port P and the port B are communicated, the port A is communicated with the port T, when the feeding oil cylinder retreats and the motor does not rotate, pressure oil passes through the port P and the port B of the three-position four-way valve and reaches the control port of the hydraulic control one-way valve, the hydraulic control one-way valve is opened, the pressure oil of the chuck returns to an oil tank through the hydraulic control one-way valve and the oil drainage port of the valve body, the chuck is loosened, meanwhile, the pressure oil of the clamp returns to the oil tank through the port A of the three-position four-way valve and the; when the oil cylinder stops acting and the motor rotates reversely, pressure oil enters the clamp holder through the one-way valve, and the clamp holder clamps the pressure oil, so that the rod unloading state of the drilling machine is realized; when the oil cylinder moves forward and the motor does not rotate, pressure oil of the chuck returns to the oil tank through the hydraulic control one-way valve and the oil drain port of the valve body, and the chuck is loosened to be in a drilling-out and rod-reversing state.
The U1 port and the U2 port of the valve body 1 are externally connected with the oil inlet and the oil return of a drill feeding oil cylinder respectively, and the input of pressure oil to the control valve can be realized when the drill feeds or retreats. The W1 port and the W2 port are respectively connected with the oil inlet and the oil return of the drill motor at the outside, and the input of pressure oil to the control valve can be realized when the drill motor rotates forwards or backwards. The X1 port is externally connected with the oil port of the gripper of the drilling machine to control the opening and closing of the gripper. The X2 port is connected with the chuck oil port of the drilling machine externally to control the opening and closing of the chuck. And the M1 port and the M2 port are externally connected with pressure gauges, so that the pressure states of a feed oil cylinder and a motor of the drilling machine can be monitored in real time.
The switching of the pressure oil of the port A and the port B is realized by switching the three-position four-way reversing valve 3, so that the linkage action of the airborne drilling machine under different working conditions is realized.
The ball valve 4 is opened under normal working conditions and closed under special working conditions, so that the pressure in the clamp can be kept.
The throttling port of the adjustable throttle valve 9 is adjustable, the size of the throttling port can be adjusted according to the model of an actual drilling machine, and the phenomenon that the pressure of an X2 port is too fast to cause damage to a chuck is prevented.
The control pressure of the overflow valve I11 and the overflow valve II12 is adjustable, the overflow pressure can be adjusted according to the hardness of underground coal rock, the pressure of the U1 port and the U2 port is controlled, the acting force of the feeding oil cylinder is further controlled, and the drill rod is prevented from being damaged on the premise of ensuring drilling.
The hydraulic control valve of the boring machine carried by the boring machine designed by the invention can be integrated and applied to boring machines of various types, not only meets the pressure and flow required by the machine, but also can realize the high integration of the boring machine and a hydraulic system of the boring machine, saves the space, simplifies the operation, reduces the failure rate, and is beneficial to better popularization and application of the boring and drilling integrated equipment.
Claims (4)
1. The utility model provides a entry driving machine carries quick-witted hydraulic control valve which characterized in that: comprises a valve body (1), a one-way valve I (2), a three-position four-way reversing valve (3), a ball valve (4), a one-way valve II (5), a one-way valve III (6), a one-way valve IV (7), a hydraulic control one-way valve (8) and an adjustable throttle valve (9) are arranged in the valve body (1), the oil-saving valve comprises a check valve V (10), an overflow valve I (11) and an overflow valve II (12), wherein an oil inlet U1, an oil inlet U2, an oil inlet W1, an oil inlet W1, an oil outlet X1, an oil outlet X2 and an oil drainage port T are arranged on a valve body (1), the oil inlets of the check valve I (2) and the overflow valve II (12) are communicated with an oil inlet U2 of the valve body (1), the oil inlets of the check valve IV (10) and the overflow valve I (11) are communicated with an oil inlet U2 of the valve body (1), the oil outlets of the overflow valve I (11) and the overflow valve II (12) are communicated with the oil drainage port T, and the oil outlets of the check valve I (2) and the check valve V (10) are communicated with a; oil inlets of the one-way valve II (5) and the one-way valve III (6) are respectively communicated with oil inlets W1 and W2 of the valve body, and an oil outlet of the one-way valve II (5), an oil outlet of the one-way valve III (6), an oil outlet of the one-way valve IV (7) and an oil inlet of the hydraulic control one-way valve (8) are communicated with an oil outlet X2 of the valve body (1); the port A of the three-position four-way reversing valve (3) is communicated with an oil inlet of the one-way valve IV (7) and an oil outlet X1 of the valve body (1), and the port B of the three-position four-way reversing valve (3) is communicated with the port K of the hydraulic control one-way valve (8); an oil outlet of the hydraulic control one-way valve (8) is communicated with an oil drainage port T of the valve body (1) through the adjustable throttle valve (9), and oil return ports of the overflow valve I (11), the overflow valve II (12) and the three-position four-way valve (3) are communicated with the T port of the valve body (1).
2. The hydraulic control valve for the roadheader-mounted drill according to claim 1, characterized in that: the valve body (1) is also provided with a pressure measuring port M1 and a pressure measuring port M2, and an oil outlet of the one-way valve I (2), an oil outlet of the one-way valve V (10) and a P port of the three-position four-way reversing valve (3) are communicated with the pressure measuring port M2; an oil outlet of the one-way valve II (5), an oil outlet of the one-way valve III (6), an oil outlet of the one-way valve IV (7) and an oil inlet of the hydraulic control one-way valve (8) are communicated with the pressure measuring port M1.
3. The roadheader-onboard drill hydraulic control valve according to claim 2, characterized in that: and a ball valve (4) is arranged between the port A of the three-position four-way reversing valve (3) and an oil outlet X1.
4. A control method for a hydraulic control valve of an onboard drilling machine of a heading machine according to claim 3, characterized by comprising: according to different working states of a machine-mounted drilling machine of the development machine, when the three-position four-way reversing valve (3) is positioned at the right position, the port P is communicated with the port A, the port B is communicated with the port T, when the feeding oil cylinder moves forwards and the motor does not rotate, pressure oil enters the clamp holder and the chuck through the port P and the port A of the three-position four-way valve, the clamp holder is opened, the chuck is clamped, and the drilling machine is in a drilling down state; when the feeding oil cylinder moves forward and the motor rotates forwards, pressure oil enters the holder and the chuck through a P port and an A port of the three-position four-way reversing valve (3), the holder is kept open, and the chuck is kept clamped and is in a drilling state; when the feeding oil cylinder retreats and the motor rotates forwards, pressure oil enters the clamp holder and the chuck through a P port and an A port of the three-position four-way reversing valve (3), the clamp holder is kept open, and the chuck is kept clamped, so that the drilling machine is in a drilling state;
when the three-position four-way reversing valve (3) is in a left position, the port P and the port B are communicated, the port A is communicated with the port T, when the feeding oil cylinder retreats and the motor does not rotate, pressure oil passes through the port P and the port B of the three-position four-way valve and reaches the control port of the hydraulic control one-way valve, the hydraulic control one-way valve is opened, the pressure oil of the chuck returns to an oil tank through the hydraulic control one-way valve and the oil drainage port of the valve body, the chuck is loosened, meanwhile, the pressure oil of the clamp returns to the oil tank through the port A of the three-position four-way valve and the; when the oil cylinder stops acting and the motor rotates reversely, pressure oil enters the clamp holder through the one-way valve, and the clamp holder clamps the pressure oil, so that the rod unloading state of the drilling machine is realized; when the oil cylinder moves forward and the motor does not rotate, pressure oil of the chuck returns to the oil tank through the hydraulic control one-way valve and the oil drain port of the valve body, and the chuck is loosened to be in a drilling-out and rod-reversing state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011289796.9A CN112253569B (en) | 2020-11-18 | 2020-11-18 | Hydraulic control valve of tunneling machine-mounted drilling machine and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011289796.9A CN112253569B (en) | 2020-11-18 | 2020-11-18 | Hydraulic control valve of tunneling machine-mounted drilling machine and control method |
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| CN112253569A true CN112253569A (en) | 2021-01-22 |
| CN112253569B CN112253569B (en) | 2022-07-26 |
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|---|---|---|---|---|
| CN203743105U (en) * | 2013-08-23 | 2014-07-30 | 刘永中 | Trip linkage control hydraulic control system |
| CN104314464A (en) * | 2014-10-09 | 2015-01-28 | 江苏凯力德科技有限公司 | Linkage type hydraulic system of all-hydraulic drilling rig |
| US20180187396A1 (en) * | 2015-06-25 | 2018-07-05 | Yanmar Co., Ltd. | Hydraulic apparatus |
| WO2019040082A1 (en) * | 2017-08-25 | 2019-02-28 | Halliburton Energy Services, Inc. | Modular electro-hydraulic downhole control system |
| CN110454140A (en) * | 2019-07-22 | 2019-11-15 | 中煤科工集团西安研究院有限公司 | The electro-hydraulic double control system of drilling machine and method for having integrated hydraulic linkage valve block |
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