CN114810709B - Compact electric proportional multi-way valve for large mining height continuous mining machine - Google Patents
Compact electric proportional multi-way valve for large mining height continuous mining machine Download PDFInfo
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- CN114810709B CN114810709B CN202210413914.5A CN202210413914A CN114810709B CN 114810709 B CN114810709 B CN 114810709B CN 202210413914 A CN202210413914 A CN 202210413914A CN 114810709 B CN114810709 B CN 114810709B
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- 238000005065 mining Methods 0.000 title claims abstract description 20
- 230000001502 supplementing effect Effects 0.000 claims abstract description 18
- 238000013016 damping Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 9
- 239000003292 glue Substances 0.000 claims description 3
- 239000003245 coal Substances 0.000 abstract description 8
- 238000009434 installation Methods 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 230000002265 prevention Effects 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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- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
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- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Multiple-Way Valves (AREA)
- Servomotors (AREA)
Abstract
The invention relates to the technical field of continuous miner, in particular to a compact electric proportional multi-way valve for a continuous miner with large mining height. The invention aims to solve the underground explosion-proof use requirement of a continuous miner coal mine, adopts the combination of 5 series reversing valves and 3 series reversing valves according to the use requirement of each working path of the multi-way valve, greatly reduces the overall structure size of the multi-way valve, increases the installation space and facilitates the maintenance, and comprises an oil inlet valve, a cutting reversing valve, a shovel plate and oil supplementing reversing valve, a rear supporting reversing valve, a conveyer lifting reversing valve, a conveyer swinging reversing valve, a towing reversing valve and a guard plate lifting reversing valve. According to the invention, the two ways of actions of lifting the shovel plate and supplementing oil for the system are integrally designed in the one-way valve, so that the overall structural size of the multi-way valve is reduced, meanwhile, the P port and the R port of the oil inlet valve are in the same direction as the A, B ports of the working link, the installation space of the multi-way valve is increased, and the multi-way valve is convenient to overhaul and maintain.
Description
Technical Field
The invention relates to the technical field of continuous miner, in particular to a compact electric proportional multi-way valve for a continuous miner with large mining height.
Background
Because the underground coal mine has combustible gas such as gas and the like, the circuit aspect of the coal mine equipment needs to have explosion resistance, the control valve used on the underground coal mine equipment is a manual reversing valve in most cases, but in actual work, potential safety hazards are generated because of misoperation of an operating handle of workers. The invention provides a compact electric proportional multi-way valve for a large mining height continuous mining machine, which replaces manual reversing and reduces misoperation of workers.
The continuous miner is a highly integrated coal mining device integrating cutting, transferring, walking and other functions, the continuous tunneling system formed by the continuous miner and the anchor rod drill carriage is high in tunneling speed, and the continuous miner is widely applied to Shaanxi, mongolian and jin mining areas with better top plate conditions of a roadway, and the domestic market has more than 110. The continuous miner has compact structure, narrow internal space of the miner body and small installation space reserved for the multi-way valve of the continuous miner. Therefore, there is a need for a compact electrical proportional multi-way valve for a large mining height continuous miner.
Disclosure of Invention
The invention provides a compact electric proportional multi-way valve for a continuous miner, which aims to solve the problem that the underground explosion-proof use requirement of a continuous miner coal mine is met, and the whole structural size of the multi-way valve is greatly reduced, the installation space is increased and the maintenance is convenient by adopting the combination of 5-series reversing valves and 3-series reversing valves according to the use requirement of each working path of the multi-way valve.
The invention adopts the following technical scheme: a compact electric proportional multi-way valve for large-mining-height continuous mining machine comprises an oil inlet valve, a cutting reversing valve, a shovel plate and oil supplementing reversing valve, a rear supporting reversing valve, a conveyor lifting reversing valve, a conveyor swinging reversing valve, a towing reversing valve and a guard plate lifting reversing valve.
The oil inlet valve comprises a pre-pressing and damping valve group, a constant difference overflow valve, an adjustable safety valve, a pressure limiting valve, a filter, a pressure reducing valve and an oil inlet valve body, wherein a multi-way valve pressure port P, a pressure port M and a multi-way valve pressure port R are arranged on the oil inlet valve body, an a port of the pre-pressing and damping valve group is communicated with load pressure, and an LS port of the pre-pressing and damping valve group is led out of the oil inlet valve body; the port b of the pre-pressing and damping valve group is communicated with a spring cavity of the constant difference overflow valve, and is simultaneously communicated with the port p1 of the adjustable safety valve and the port p2 of the pressure limiting valve; the d port and the e port of the constant-difference overflow valve are communicated with the pressure port P of the multi-way valve, and the c port of the constant-difference overflow valve is communicated with the pressure port R of the multi-way valve; the t1 port of the adjustable safety valve and the t2 port of the pressure limiting valve are communicated with the pressure port R of the multi-way valve; the pressure port f of the pressure reducing valve is communicated with the pressure port P of the multi-way valve, the port g of the pressure reducing valve is communicated with the oil return port R of the multi-way valve, the port h of the pressure reducing valve is communicated with the electric proportional valve, and the pressure port M is led out from the front of the port f of the pressure reducing valve on the valve body of the oil inlet valve; the channel that each valve is connected with multiway valve pressure mouth P mouth is multiway valve pressure P way, and the filter is established ties in multiway valve pressure P way.
The cutting reversing valve adopts 5 series reversing valves, the maximum control flow of the reversing valve can reach 160L/min, and the external dimension is long multiplied by width multiplied by height: the valve comprises a shuttle valve I, an electric proportional valve I, a main reversing valve core I, a valve body I, an overflow valve I, an auxiliary block I, a spring cover, an electromagnet and a handle seat, wherein the shuttle valve I and the electric proportional valve I are arranged on the valve body I; the auxiliary block I is arranged on the valve body I, two ends of the auxiliary block I are respectively provided with an overflow valve I through threads, a sealing ring is arranged between the valve body I and the auxiliary block I, and an oil port A and an oil port B are arranged at the upper end of the auxiliary block I.
The port b and the port a of the shuttle valve are connected into a load pressure oil circuit, and the port c is communicated with the port I h and the port g of the valve body; the d port of the electric proportional valve I-1 e is respectively communicated with the d port of the electric proportional valve I-2 e, and the d ports of the electric proportional valve I-1 and the electric proportional valve I-2 f are respectively communicated with the I b port and the a port of the valve body; the port I e and the port f of the valve body are communicated with the oil way of the multi-way valve P, and the port c and the port d are communicated with the port Ia of the overflow valve; and the Ib port of the overflow valve is communicated with the oil way of the multi-way valve R.
The shovel plate and the oil supplementing reversing valve comprise a shuttle valve II, an electric proportional valve II, a main reversing valve core II, a valve body II, an overflow valve II, a rotary manual reversing valve, a two-position three-way reversing valve and an auxiliary block II, wherein the shuttle valve II and the electric proportional valve II are arranged on the valve body II, the main reversing valve core II is arranged in the valve body II, the front end of the valve body II is connected with a handle seat II in a hinging manner, a spring II and a spring cover II are arranged at the rear end of the valve body II, an electromagnet is arranged below the spring II and the spring cover II, the auxiliary block II is arranged on the valve body II, the front end of the auxiliary block II is provided with the overflow valve and the rotary manual reversing valve through threads, the rear end of the auxiliary block II is provided with the two-position three-way reversing valve through threads, and a sealing ring is arranged between the valve body II and the auxiliary block II.
The port b and the port a of the shuttle valve are connected into a load pressure oil circuit, and the port c is communicated with the port II and the port g of the valve body; the port d of the electric proportional valve II-1e is respectively communicated with the port d of the electric proportional valve II-2 e, and the ports II-1 and II-2 f of the electric proportional valve are respectively communicated with the port IIb and the port a of the valve body; the port II e and the port f of the valve body are communicated with an oil way of the multi-way valve P, the port c is communicated with the port A of the valve body II, and the port d is communicated with the overflow valve II, the manual reversing valve and the port a of the two-position three-way reversing valve; the overflow valve I and the manual reversing valve b are communicated with an oil way of the multi-way valve R; the port c of the manual reversing valve is communicated with the port x of the two-position three-way reversing valve; the port a and the port B of the two-position three-way reversing valve are respectively communicated with the port IIB 1 and the port B2 of the auxiliary block.
The rear support reversing valve, the conveyor lifting reversing valve, the conveyor swinging reversing valve, the towing reversing valve and the guard plate lifting reversing valve are small in required flow, 3 series reversing valves are adopted, the maximum control flow of the reversing valves can reach 80L/min, the overall size of the reversing valves is smaller than that of 5 series reversing valves, and the overall size is long, wide and high: the structure of the 96mm multiplied by 53.5mm multiplied by 85mm,5 reversing valves are the same, and the reversing valve comprises a shuttle valve III, an electric proportional valve III, a main reversing valve core III, a valve body III, an overflow valve III, an auxiliary block III, a spring and a spring cover, an electromagnet and a handle seat, wherein the shuttle valve III and the electric proportional valve III are arranged on the valve body III, the main reversing valve core III is arranged in the valve body III, the front end of the valve body III is connected with the handle seat III, the spring III and the spring cover III are arranged at the rear end of the valve body III, and the electromagnet is arranged under the spring and the spring cover; the auxiliary block III is arranged on the valve body III, two ends of the auxiliary block III are respectively provided with an overflow valve III through threads, a sealing ring is arranged between the valve body III and the auxiliary block III, and an oil port A and an oil port B are arranged at the upper end of the auxiliary block III.
The port b and the port a of the shuttle valve are connected into a load pressure oil circuit, and the port c is communicated with the port III h and the port g of the valve body; the d port of the electric proportional valve III-1 e is respectively communicated with the d port of the electric proportional valve III-2 e, and the d ports of the electric proportional valve III-1 and the electric proportional valve III-2 f are respectively communicated with the IIIb port and the a port of the valve body; the port III e and the port f of the valve body are communicated with an oil way of the multi-way valve P, and the port C and the port d of the valve body are communicated with the port IIIa of the overflow valve; and the port of the overflow valve IIIb is communicated with the oil way of the multi-way valve R.
The electromagnet is an explosion-proof glue sealing electromagnet, and the current is 370mA.
The adjustable safety valve is a hand-wheel type adjustable valve.
The oil inlet valve is provided with a threaded interface G1 of a P port and a threaded interface G1 of an R port.
The oil inlet valve, the cutting reversing valve, the shovel plate and the oil supplementing reversing valve, the rear support reversing valve, the conveyor lifting reversing valve, the conveyor swinging reversing valve, the towing rope reversing valve, the guard plate lifting reversing valve and the tail plate are fixed on the mounting base through bolts and are connected with nuts through the main valve connecting studs.
The control process of the lifting of the multi-way valve shovel plate and the oil supplementing switching of the system is as follows:
the rotary manual reversing valve on the auxiliary block II is initially set to be in a shovel plate lifting action, after the oil pump is started, the reversing valve is electrically controlled or manually operated to realize the shovel plate lifting, when the system needs to refuel an oil tank, a screw is unscrewed, the screw is rotated 90 degrees clockwise, the screw is screwed, and the shovel plate and the oil supplementing reversing valve handle are manually operated downwards to realize refuel of the system.
Compared with the prior art, the invention integrates the two ways of lifting of the shovel plate and oil supplementing of the system into the one-way valve, reduces the overall structural size of the multi-way valve, simultaneously increases the installation space of the multi-way valve in the same direction as the P port and the R port of the oil inlet valve and the A, B port of the working link, and is convenient for maintenance.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a hydraulic schematic of the present invention;
FIG. 3 is a hydraulic schematic diagram of a multi-way valve oil inlet valve;
FIG. 4 is a hydraulic schematic diagram of a cut lift reversing valve;
FIG. 5 is a schematic view of a cut lift reversing valve;
FIG. 6 is a hydraulic schematic diagram of a blade and oil make-up reversing valve;
FIG. 7 is a schematic diagram of a shovel and oil make-up reversing valve;
FIG. 8 is a hydraulic schematic of a rear support reversing valve;
FIG. 9 is a schematic view of a rear support reversing valve;
The components in the drawings are marked as follows: 1-oil inlet valve, 2-cutting reversing valve, 3-shovel plate and oil supplementing reversing valve, 4-5 turn 3 transition block, 5-back support reversing valve, 6-conveyor lifting reversing valve, 7-conveyor swinging reversing valve, 8-towing reversing valve, 9-guard lifting reversing valve, 10-tail plate, 11-main valve connecting stud, 12-nut, 1.1-pre-pressing and damping valve group, 1.2-constant difference overflow valve, 1.3-adjustable safety valve, 1.4-pressure limiting valve, 1.5-filter, 1.6-pressure reducing valve, 1.7-oil inlet valve body, 2.1-shuttle valve, 2.2.1-electric proportional valve I-1,2.2.2-electric proportional valve I-2,2.3-main reversing valve core, 2.4-valve body, 2.5-overflow valve, 2.6-auxiliary block I, 2.7-spring and spring cover, 2.8-electromagnet, 2.9-handle seat, 3.1-shuttle valve, 3.2.1-electric proportional valve II-1,3.2.2-electric proportional valve II-2,3.3-main reversing valve core, 3.4-valve body, 3.5-overflow valve, 3.6-rotary manual reversing valve, 3.7-two-position three-way reversing valve, 3.8-auxiliary block II, 3.9-spring and spring cover, 3.10-electromagnet, 3.11-handle seat, 5.1-shuttle valve, 5.2.1-electric proportional valve III-1,5.2.2-electric proportional valve III-2,5.3-main reversing valve core, 5.4-valve body, 5.5-overflow valve, 5.6-auxiliary block III, 5.7-spring and spring cover, 5.8-electromagnet, 5.9-handle seat.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
The invention aims to provide a compact electric proportional multi-way valve for a continuous miner with large mining height, which can solve the technical problems of multi-way valve of a continuous miner, narrow installation space and underground explosion prevention of a coal mine.
The invention provides a compact electric proportional multi-way valve for a large mining height continuous mining machine, which is shown in fig. 1 and 2, and comprises an oil inlet valve 1, a cutting reversing valve 2, a shovel plate and oil supplementing reversing valve 3, a 5-to-3 transition block 4, a rear support reversing valve 5, a conveyor lifting reversing valve 6, a conveyor swinging reversing valve 7, a towing reversing valve 8, a guard plate lifting reversing valve 9, a tail plate 10, a main valve connecting stud 11 and a nut 12. The multi-way valve is characterized in that 4 main valve connecting studs 11 and nuts 12 are used for connecting the oil inlet valves 1, 5-to-3 transition blocks 4, 7 reversing valves and a tail plate 10. The oil inlet valve 1 is provided with a pre-pressing and damping valve group 1.1, a constant difference overflow valve 1.2, an adjustable safety valve 1.3, a pressure limiting valve 1.4, a filter 1.5, a pressure reducing valve 1.6 and an oil inlet valve body 1.7. The cutting reversing valve 2 is provided with a shuttle valve 2.1, an electric proportional valve 2.2, a main reversing valve core 2.3, a valve body 2.4, an overflow valve 2.5, an auxiliary block I2.6, a spring cover 2.7, an electromagnet 2.8 and a handle seat 2.9. The shovel plate and the oil supplementing reversing valve 3 are provided with a shuttle valve 3.1, an electric proportional valve 3.2, a main reversing valve core 3.3, a valve body 3.4, an overflow valve 3.5, a rotary manual reversing valve 3.6, a two-position three-way reversing valve 3.7, an auxiliary block II 3.8, a spring and spring cover 3.9, an electromagnet 3.10 and a handle seat 3.11.
The rear support reversing valve 5, the conveyor lifting reversing valve 6, the conveyor swing reversing valve 7, the towing rope reversing valve 8 and the guard plate lifting reversing valve 9 are respectively provided with a shuttle valve 5.1, an electric proportional valve 5.2, a main reversing valve core 5.3, a valve body 5.4, an overflow valve 5.5, an auxiliary block III 5.6, a spring and a spring cover 5.7, an electromagnet 5.8 and a handle seat 5.9.
The device is characterized in that an a port and load pressure of the pre-pressing and damping valve group 1.1 are communicated, an LS port is led out to an oil inlet valve body 1.7, a b port is communicated with a spring cavity of the constant difference relief valve 1.2, a P1 port of the adjustable relief valve 1.3 is communicated with a P2 port of the pressure limiting valve 1.4, a d port and an e port of the constant difference relief valve 1.2 are communicated with a multi-way valve pressure port P, a c port is communicated with a multi-way valve oil return port R, a t1 port of the adjustable relief valve 1.3 and a t2 port of the pressure limiting valve 1.4 are communicated with the multi-way valve oil return port R, a filter 1.5 is connected in series in a multi-way valve pressure P path, an f port of the pressure reducing valve 1.6 is communicated with the multi-way valve pressure port P, a g port is communicated with the multi-way valve oil return port R, an h port is communicated with the electric proportional valve 2.2, and a pressure port M is led out of the oil inlet valve body 1.7. The threaded interfaces of the oil inlet valve 1, which is provided with a P port and an R port, are G1.
The shuttle valve 2.1 and the electric proportional valve 2.2 of the cutting reversing valve 2 are arranged on the valve body 2.4 through threads, the valve core 2.3 of the main reversing valve is arranged in the valve body 2.4, the front end of the main reversing valve is connected with the handle seat 2.9 in a hinging mode, the rear end of the main reversing valve is provided with a spring and a spring cover 2.7, and an electromagnet 2.8 is arranged below the spring cover 2.7. The auxiliary block I2.6 is arranged on the valve body 2.4 through 4 bolts, and overflow valves 2.5 are respectively arranged at the two ends of the auxiliary block I2.6 through threads. A sealing ring is arranged between the valve body 2.4 and the auxiliary block I2.6. And an oil port A and an oil port B are arranged at the upper end of the auxiliary block I2.6.
The shuttle valve 3.1 and the electric proportional valve 3.2 are arranged on the valve body 3.4 through threads, the valve core 3.3 of the main reversing valve is arranged in the valve body 3.4, the front end of the main reversing valve is connected with the handle seat 3.11 in a hinging mode, the spring and the spring cover 3.9 are arranged at the rear end of the main reversing valve, and the electromagnet 3.10 is arranged below the spring cover 3.9. The auxiliary block II 3.8 is arranged on the valve body 3.4 through 4 bolts, the front end of the auxiliary block II 3.8 is provided with the overflow valve 3.5 and the rotary manual reversing valve 3.6 through threads, the rear end of the auxiliary block II is provided with the two-position three-way reversing valve 3.7 through threads, and a sealing ring is arranged between the valve body 3.4 and the auxiliary block II 3.8.
The shuttle valve 5.1 and the electric proportional valve 5.2 are arranged on the valve body 5.4 through threads, the valve core 5.3 of the main reversing valve is arranged in the valve body 5.4, the front end of the main reversing valve is connected with the handle seat 5.9 in a hinging mode, the spring and the spring cover 5.7 are arranged at the rear end of the main reversing valve, and the electromagnet 5.8 is arranged below the spring cover 5.7. The auxiliary block III 5.6 is arranged on the valve body 5.4 through 4 bolts, and overflow valves 5.5 are respectively arranged at the two ends of the auxiliary block III 5.6 through threads. A sealing ring is arranged between the valve body 5.4 and the auxiliary block III 5.6. And an oil port A and an oil port B are arranged at the upper end of the auxiliary block III 5.6.
The rear support reversing valve 5, the conveyor lifting reversing valve 6, the conveyor swinging reversing valve 7, the towing rope reversing valve 8 and the guard plate lifting reversing valve 9 are identical in structure.
The working process is that the pressure oil of the gear pump enters the P port of the multi-way valve, simultaneously flows to the port and the control port of the constant-difference overflow valve 1.2 d and the cutting reversing valve 2, the shovel plate and the oil supplementing reversing valve 3 and the rear support reversing valve 5, the lifting reversing valve 6 of the conveyer, the swinging reversing valve 7 of the conveyer, the towing reversing valve 8 and the e port and the f port of the guard plate lifting reversing valve 9, and when any reversing valve does not act, the pressure oil pushes the control port of the constant-difference overflow valve 1.2, the valve core of the constant-difference overflow valve 1.2 is opened, and the pressure oil flows back to the oil tank. The pressure oil is decompressed by the filter 1.5 and the decompression valve 1.6 and then enters the electric proportional valve, when the electromagnet on the corresponding electric proportional valve is electrified, the valve core of the electric proportional valve is pushed to act, the pilot oil decompressed by the decompression valve enters one end of the valve core of the main reversing valve, and the valve core of the main reversing valve is pushed to reverse. When any reversing valve acts, pressure oil flows out from a control valve A or B through a reversing valve core, meanwhile, the reversing valve 2 is cut, a shovel plate, an oil supplementing reversing valve 3, a rear supporting reversing valve 5, a conveyor lifting reversing valve 6, h-mouth pressure oil of a conveyor swinging reversing valve 7, a towing rope reversing valve 8 and a guard plate lifting reversing valve 9 acts on a C mouth of the shuttle valve, the pressure oil pressure of each path is compared, after the maximum pressure oil passes through a B mouth of the shuttle valve, the pressure oil is subjected to 1.1 pre-pressing and damping valve damping action, the pressure oil acts on a 1.2 constant difference overflow valve spring cavity, a 1.3 adjustable safety valve p1 mouth and a 1.4 pressure relief valve p2 mouth, and when the pressure exceeds the set pressure of the 1.3 adjustable safety valve or the 1.4 pressure relief valve, the pressure is relieved.
The control process of the lifting of the multi-way valve shovel plate and the oil supplementing switching of the system is as follows:
The rotary manual reversing valve 3.6 on the auxiliary block II 3.8 is initially set to be in a shovel plate lifting action, after the oil pump is started, the reversing valve is electrically controlled or manually operated to realize the shovel plate lifting, when the system needs to refuel an oil tank, a screw is unscrewed, the screw is rotated 90 degrees clockwise, the screw is screwed, and the shovel plate and the oil supplementing reversing valve handle are manually operated downwards to realize refuel of the system.
The electromagnet 3.8 is an explosion-proof glue sealing electromagnet, and is suitable for underground coal mines, and the current is 370mA.
The adjustable safety valve 1.3 is a hand wheel type adjustable valve, and is convenient to adjust.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.
Claims (5)
1. A compact electric proportion multiple unit valve for continuous miner of great mining height, its characterized in that: comprises an oil inlet valve (1), a cutting reversing valve (2), a shovel plate and oil supplementing reversing valve (3), a five-rotation three-transition block (4), a rear support reversing valve (5), a conveyor lifting reversing valve (6), a conveyor swinging reversing valve (7), a towing reversing valve (8) and a guard plate lifting reversing valve (9),
The oil inlet valve (1) comprises a pre-pressing and damping valve group (1.1), a fixed difference overflow valve (1.2), an adjustable safety valve (1.3), a pressure limiting valve (1.4), a filter (1.5), a pressure reducing valve (1.6) and an oil inlet valve body (1.7), wherein a multi-way valve pressure port P, a pressure port M and a multi-way valve pressure port R are arranged on the oil inlet valve body (1.7), an a port a of the pre-pressing and damping valve group (1.1) is communicated with load pressure, and an LS port of the pre-pressing and damping valve group (1.1) is led out to the oil inlet valve body (1.7); the port b of the pre-pressing and damping valve group (1.1) is communicated with a spring cavity of the constant difference overflow valve (1.2), and is simultaneously communicated with the port p1 of the adjustable safety valve (1.3) and the port p2 of the pressure limiting valve (1.4); the d port and the e port of the constant-difference overflow valve (1.2) are communicated with the pressure port P of the multi-way valve, and the c port of the constant-difference overflow valve (1.2) is communicated with the pressure port R of the multi-way valve; the t1 port of the adjustable safety valve (1.3) and the t2 port of the pressure limiting valve (1.4) are communicated with the pressure port R of the multi-way valve; the f port of the pressure reducing valve (1.6) is communicated with the pressure P port of the multi-way valve, the g port of the pressure reducing valve (1.6) is communicated with the oil return R port of the multi-way valve, and the f port of the pressure reducing valve (1.6) is provided with a pressure port M on the oil inlet valve body (1.7); the channels of the valves and the oil return ports of the multiple valves are the R oil paths of the multiple valves;
The cutting reversing valve (2) comprises a shuttle valve I (2.1), an electric proportional valve I (2.2), a main reversing valve core I (2.3), a valve body I (2.4), an overflow valve I (2.5), an auxiliary block I (2.6), a spring and spring cover I (2.7), an electromagnet I (2.8) and a handle seat I (2.9), wherein the main reversing valve core I (2.3) is arranged in the valve body I (2.4), a plurality of openings a-h are formed in the valve body (2.4), the front end of the valve body I (2.4) is connected with the handle seat (2.9), a spring and a spring cover (2.7) are arranged at the rear end of the valve body I (2.4), and an electromagnet (2.8) is arranged below the spring and the spring cover (2.7); the auxiliary block I (2.6) is arranged on the valve body I (2.4), two ends of the auxiliary block I (2.6) are respectively provided with an overflow valve I (2.5) through threads, and the upper end of the auxiliary block I (2.6) is provided with an oil port A and an oil port B; the port b and the port a of the shuttle valve I (2.1) are connected into a load pressure oil circuit, and the port c of the shuttle valve I (2.1) is communicated with the port h and the port g of the valve body (2.4); the electric proportional valve I (2.2) is provided with two groups, namely a first electric proportional valve I (2.2.1) and a second electric proportional valve II (2.2.2), an e port d port of the first electric proportional valve I (2.2.1) is respectively communicated with an e port d port of the second electric proportional valve II (2.2.2), and f ports of the first electric proportional valve I (2.2.1) and the second electric proportional valve II (2.2.2) are respectively communicated with a port and a port b of the valve body (2.4); the e port and the f port of the valve body (2.4) are communicated with the oil way of the multi-way valve P, and the c port and the d port are communicated with the a port of the overflow valve I (2.5); the port b of the overflow valve I (2.5) is communicated with an oil way of the multi-way valve R;
The shovel plate and oil supplementing reversing valve (3) comprises a shuttle valve II (3.1), an electric proportional valve II (3.2), a main reversing valve core II (3.3), a valve body II (3.4), an overflow valve II (3.5), a rotary manual reversing valve (3.6), a two-position three-way reversing valve (3.7), an auxiliary block II (3.8), a spring and spring cover II (3.9), an electromagnet II (3.10) and a handle seat II (3.11), the shuttle valve II (3.1) and the electric proportional valve II (3.2) are arranged on the valve body II (3.4), the main reversing valve core II (3.3) is arranged in the valve body II (3.4), a plurality of ports a-g are arranged on the valve body II (3.4), the front end of the valve body II (3.4) is connected with the handle seat (3.11) in a hinging mode, the rear end of the valve body II (3.4) is provided with a spring and a spring cover (3.9), the electromagnet II (33.10) is arranged below the spring and spring cover II (3.9), the auxiliary block II (3.8) is arranged on the valve body II (3.4) and the valve body II (3.4) is connected with the auxiliary block II (3.8) through the overflow valve core II (3.4) and the auxiliary block II (3.5) through the screw thread, the two-port of the auxiliary reversing valve II (3.8.7) is arranged in the valve body II (3.4) and the valve body II is connected with the valve body II (3.3.4) through the auxiliary port, the c port of the shuttle valve II (3.1) is communicated with the h port and the g port of the valve body II (3.4); the electric proportional valve II (3.2) is provided with two groups, namely a first electric proportional valve II (3.2.1) and a second electric proportional valve II (3.2.2), an e port d port of the first electric proportional valve II (3.2.1) is respectively communicated with an e port d port of the second electric proportional valve II (3.2.2), and f ports of the first electric proportional valve II (3.2.1) and the second electric proportional valve II (3.2.2) are respectively communicated with a port and a port b of the valve body II (3.4); the e port and the f port of the valve body II (3.4) are communicated with the oil way of the multi-way valve P, the c port of the valve body II (3.4) is communicated with the A port of the valve body II (3.4), and the d port of the valve body II (3.4) is communicated with the a port of the overflow valve II (3.5), the manual reversing valve (3.6) and the two-position three-way reversing valve (3.7); the ports b of the overflow valve II (3.5) and the manual reversing valve (3.6) are communicated with an oil way of the multi-way valve R; the c port of the manual reversing valve (3.6) is communicated with the x port of the two-position three-way reversing valve (3.7); the port a and the port B of the two-position three-way reversing valve (3.7) are respectively communicated with the port B1 and the port B2 of the auxiliary block II (3.8);
The rear support reversing valve (5), the conveyor lifting reversing valve (6), the conveyor swinging reversing valve (7), the towing reversing valve (8) and the guard plate lifting reversing valve (9) have the same structure, and comprise a shuttle valve III (5.1), an electric proportional valve III (5.2), a main reversing valve core III (5.3), a valve body III (5.4), an overflow valve III (5.5), an auxiliary block III (5.6), a spring and spring cover (5.7) III, an electromagnet III (5.8) and a handle seat III (5.9), wherein the shuttle valve III (5.1) and the electric proportional valve III (5.2) are arranged on the valve body III (5.4), the main reversing valve core III (5.3) is arranged in the valve body III (5.4), a plurality of ports a-h are formed in the valve body III (5.4), the front end of the valve body III (5.4) is connected with the handle seat (5.9), the spring and the spring cover (5.7) are arranged at the rear end of the valve body III, and the electromagnet (5.8) is arranged below the spring cover (5.7); the auxiliary block III (5.6) is arranged on the valve body III (5.4), two ends of the auxiliary block III (5.6) are respectively provided with an overflow valve III (5.5) through threads, and the upper end of the auxiliary block III (5.6) is provided with an oil port A and an oil port B; the port b and the port a of the shuttle valve III (5.1) are connected into a load pressure oil circuit, and the port c of the shuttle valve III (5.1) is communicated with the port h and the port g of the valve body III (5.4); the electric proportional valve III (5.2) comprises a first electric proportional valve III (5.2.1) and a second electric proportional valve III (5.2.2), an e port d of the first electric proportional valve III (5.2.1) is respectively communicated with an e port d of the second electric proportional valve III (5.2.2), and f ports of the first electric proportional valve III (5.2.1) and the second electric proportional valve III (5.2.2) are respectively communicated with a port b and an a port of the valve body I (2.4); the e port and the f port of the valve body III (5.4) are communicated with the oil way of the multi-way valve P, and the c port and the d port of the valve body III (5.4) are communicated with the a port of the overflow valve III (5.5); the port b of the overflow valve III (5.5) is communicated with the oil way of the multi-way valve R.
2. The compact electrical proportional multi-way valve for a continuous miner of great mining height as claimed in claim 1, wherein: the electromagnet (2.8) is an explosion-proof glue sealing electromagnet, and the current is 370mA.
3. The compact electrical proportional multi-way valve for a continuous miner of great mining height as claimed in claim 1, wherein: the adjustable safety valve (1.3) is a hand wheel type adjustable valve.
4. The compact electrical proportional multi-way valve for a continuous miner of great mining height as claimed in claim 1, wherein: the oil inlet valve (1) is provided with a threaded interface G1 of a P port and a threaded interface G of an R port, and the threaded interface G is in the same direction with the auxiliary block I (2.6).
5. The compact electrical proportional multi-way valve for a continuous miner of great mining height as claimed in claim 1, wherein: the oil inlet valve (1), the cutting reversing valve (2), the shovel plate and oil supplementing reversing valve (3), the five-rotation three-transition block (4), the rear support reversing valve (5), the conveyor lifting reversing valve (6), the conveyor swinging reversing valve (7), the towing rope reversing valve (8), the guard plate lifting reversing valve (9) and the tail plate (10) are connected with the nut (12) through the main valve connecting stud (11).
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| CN105402180A (en) * | 2014-08-12 | 2016-03-16 | 徐工集团工程机械股份有限公司 | Proportion multi-way valve, cantilever crane hydraulic control system and concrete pump vehicle |
| DE102015220174A1 (en) * | 2014-10-17 | 2016-04-21 | Xuzhou Construction Machinery Group Co., Ltd. | Multi-way valve and hydraulic flow distribution system |
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| CN206144882U (en) * | 2016-06-15 | 2017-05-03 | 江苏科迈液压控制系统有限公司 | Sensitive proportion multiple unit valve of load |
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| CN109441905B (en) * | 2018-12-26 | 2020-01-07 | 太原理工大学 | Variable pressure difference load sensitive multi-way valve |
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| DE102015220174A1 (en) * | 2014-10-17 | 2016-04-21 | Xuzhou Construction Machinery Group Co., Ltd. | Multi-way valve and hydraulic flow distribution system |
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