CN113969854A - Gas-electricity combined control starting system for mine explosion-proof vehicle - Google Patents
Gas-electricity combined control starting system for mine explosion-proof vehicle Download PDFInfo
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- CN113969854A CN113969854A CN202111237914.6A CN202111237914A CN113969854A CN 113969854 A CN113969854 A CN 113969854A CN 202111237914 A CN202111237914 A CN 202111237914A CN 113969854 A CN113969854 A CN 113969854A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N7/00—Starting apparatus having fluid-driven auxiliary engines or apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The invention discloses a gas-electricity combined control starting system for a mine explosion-proof vehicle, which comprises: the device comprises an air motor, a main control valve, a Y-shaped filter, an air storage tank, a filter, a miniature air source switch valve, a toggle switch valve, an electromagnetic switch valve, a first shuttle valve, a protection electromagnetic valve, an air-electricity linkage device, an ECU control switch, an engine oil pilot protection valve, a starting electromagnetic valve, an air starting valve, a second shuttle valve and a pilot control stop valve. The pneumatic-electric linkage device is used for converting pneumatic control and electric control into linkage, and reliable starting and stopping of the vehicle can be met through remote control. And meanwhile, the pilot control stop valve is adopted to remotely control the large-flow valve, so that the reasonable arrangement of a narrow space of a cab is met. The invention ensures the remote control of the vehicle, simultaneously reserves the original manual operation starting function, and meets the requirements of different configurations of the mining vehicle.
Description
Technical Field
The invention relates to the technical field of vehicle starting control, in particular to a gas-electricity combined control starting system for a mine explosion-proof vehicle.
Background
With the continuous advance of intelligent mines, the underground coal mine has higher requirements on intelligent control of explosion-proof vehicles, and the remote control driving vehicle has come to be operated for reducing people, increasing efficiency and safely controlling. The remote control driving vehicle has two driving modes at present, one mode is that an explosion-proof motor is directly driven, namely, a pure electric explosion-proof vehicle; the other is an explosion-proof vehicle driven by an explosion-proof diesel engine. The invention relates to a starting control system of a pure electric explosion-proof vehicle, which is a starting system of a remote control explosion-proof vehicle driven by an explosion-proof diesel engine. The prior reliable component of the explosion-proof diesel engine starter is an air motor which is very safe and does not need explosion-proof treatment. Because the prior explosion-proof remote control system is just started and is not mature, on one hand, the related electric devices of the remote control element all need explosion-proof treatment, and the performance is influenced after the treatment; on one hand, the pneumatic electromagnetic valve is electrically controlled in remote control, and the corresponding delay exists in the driving, so that the remote control effect is influenced; furthermore, the remote control design program is different from the existing control program, and human inadaptation factors exist. The remote control system integrated on the coal mine vehicle has the defects of technology and operation. In order to ensure the normal operation of the explosion-proof remote control vehicle, a control system integrating manual operation and remote control is required to be invented.
Disclosure of Invention
The invention aims to provide a gas-electric combined control starting system for a mine explosion-proof vehicle, which can meet the requirements of reliable starting and stopping of the vehicle through electro-hydraulic hybrid linkage and remote control.
In order to achieve the purpose, the invention provides the following scheme:
a gas-electricity combined control starting system for a mine explosion-proof vehicle comprises: the system comprises an air motor, a main control valve, a Y-shaped filter, an air storage tank, a filter, a miniature air source switch valve, a toggle switch valve, an electromagnetic switch valve, a first shuttle valve, a protection electromagnetic valve, an air-electricity linkage device, an ECU control switch, an engine oil pilot protection valve, a starting electromagnetic valve, an air starting valve, a second shuttle valve and a pilot control stop valve;
one end of the gas storage tank is connected with one end of the miniature gas source switch valve through the filter; the other end of the micro air source switch valve is respectively connected with the first port of the toggle switch valve and the first port of the electromagnetic switch valve, the second port of the toggle switch valve is connected with the second port of the first shuttle valve, and the third port of the electromagnetic switch valve is connected with the first port of the first shuttle valve; the third port of the first shuttle valve is respectively connected with the first port of the protection electromagnetic valve and one end of the pneumatic-electric linkage device; the other end of the gas-electric linkage device is connected with the ECU control switch; the third port of the protection electromagnetic valve is connected with the third port of the engine oil pilot protection valve, and the second port of the engine oil pilot protection valve is respectively connected with the first port of the starting electromagnetic valve and the first port of the pneumatic starting valve; the third port of the starting electromagnetic valve is connected with the first port of the second shuttle valve, and the second port of the pneumatic starting valve is connected with the second port of the second shuttle valve; the third port of the second shuttle valve is respectively connected with the third port of the pilot control stop valve and the first port of the air motor; the air motor, the main control valve and the Y-shaped filter are sequentially connected, and the Y-shaped filter is also connected with a second port of the pilot control stop valve; and the first port of the pilot control stop valve is connected with the air storage tank.
Optionally, a safety valve, a water drain switch and an external inflation switch are arranged on the gas storage tank.
Optionally, the method further comprises: the one-way valve, the pressure regulating valve and the vehicle-mounted air compressor are sequentially connected; and the vehicle-mounted air compressor inflates the air storage tank through the pressure regulating valve and the one-way valve.
Optionally, the method further comprises: and the air pressure gauge is respectively connected with the pressure regulating valve and the filter.
Optionally, the method further comprises: and the air door control cylinder is respectively connected with the third port of the protection electromagnetic valve and the third port of the engine oil pilot protection valve.
Optionally, the method further comprises: and the pressure sensor is connected with the engine oil pilot protection valve.
Optionally, the pilot-controlled shutoff valve is connected to the ECU control switch through a connecting rocker arm.
Optionally, the gas-electric linkage device comprises a cavity, a piston body, a rack, a gear shaft, a baffle cover, a spring and an end cover; the piston body, the rack, the gear shaft, the baffle cover and the spring are all arranged in the cavity, and the end cover is connected with the cavity through threads; the piston body is connected with one end of the rack, the blocking cover is connected with the other end of the rack, and the spring is arranged on the blocking cover; the gear shaft is vertically arranged on the cavity and meshed with the rack; and a sealing ring is arranged between the piston body and the cavity.
Optionally, the pilot controlled shutoff valve includes: the valve comprises a valve body, a valve seat, a guide seat, a first combined seal, a valve core, a cylinder body seal ring, a piston, an indicating pin, a blocking cover, an upper cover, a first pressure spring, a lower cover, a second combined seal, a first spring seat, a second pressure spring and a second spring seat;
a sealing gasket is arranged between the valve body and the valve seat; one end of the valve core is fixed with the valve seat, and the other end of the valve core is connected with one end of the piston; the other end of the piston is provided with an indicating pin; a first pressure spring is arranged between the upper end of the piston and the upper cover; a cylinder body sealing ring is arranged on the excircle of the piston; the top of the upper cover is provided with the plug cover; the lower cover is connected with the valve body through threads, and a guide seat, a first combined seal, a first spring seat, a second pressure spring, a second spring seat and a second combined seal are arranged in a cavity of the lower cover; the upper cover is connected with the lower cover.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the pneumatic-electric linkage device is used for converting pneumatic control and electric control into linkage, and reliable starting and stopping of the vehicle can be met through remote control. And meanwhile, the pilot control stop valve is adopted to remotely control the large-flow valve, so that the reasonable arrangement of a narrow space of a cab is met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic diagram of a gas-electric combined control starting system of a mining explosion-proof vehicle according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of an electro-pneumatic linkage assembly according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a pilot-controlled stop valve in a closed state according to an embodiment of the present invention
FIG. 4 is a schematic diagram of the pilot-controlled open state of the cut-off valve according to the embodiment of the present invention
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a gas-electric combined control starting system for a mine explosion-proof vehicle, which can meet the requirements of reliable starting and stopping of the vehicle through electro-hydraulic hybrid linkage and remote control.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, the invention provides a gas-electric combined control starting system for a mine explosion-proof vehicle, which comprises: the device comprises an air motor 1, a main control valve 2, a Y-shaped filter 3, an air storage tank 4, a filter 11, a miniature air source switch valve 12, a toggle switch valve 14, an electromagnetic switch valve 15, a first shuttle valve 16, a protection electromagnetic valve 17, an air-electric linkage device 19, an ECU control switch 21, an engine oil pilot protection valve 22, a starting electromagnetic valve 24, an air starting valve 25, a second shuttle valve 26 and a pilot control stop valve 27.
One end of the air storage tank 44 is connected with one end of the micro air source switch valve 12 through the filter 11; the other end of the micro air source switch valve 12 is respectively connected with a first port of a toggle switch valve 14 and a first port of an electromagnetic switch valve 15, a second port of the toggle switch valve 14 is connected with a second port of a first shuttle valve 16, and a third port of the electromagnetic switch valve 15 is connected with the first port of the first shuttle valve 16; the third port of the first shuttle valve 16 is respectively connected with the first port of the protection electromagnetic valve 17 and one end of the pneumatic-electric linkage device 19; the other end of the gas-electric linkage device 19 is connected with an ECU control switch 21; a third port (c) of the protection electromagnetic valve 17 is connected with a third port (c) of the engine oil pilot protection valve 22, and a second port (c) of the engine oil pilot protection valve 22 is respectively connected with a first port (r) of the starting electromagnetic valve 24 and a first port (r) of the gas starting valve 25; a third port (c) of the starting electromagnetic valve 24 is connected with a first port (c) of a second shuttle valve 26, and a second port (c) of the pneumatic starting valve 25 is connected with a second port (c) of the second shuttle valve 26; the third port (c) of the second shuttle valve 26 is connected to the third port (c) of the pilot control cut-off valve 27 and the first port (c) of the air motor, respectively; the air motor, the main control valve and the Y-shaped filter 311 are sequentially connected, and the Y-shaped filter 311 is also connected with a second port II of the pilot control stop valve 27; the first port (first port) of the pilot-controlled shutoff valve 27 is connected to the air tank 4.
As shown in fig. 2, the gas-electric linkage 19 includes a cavity 191, a piston body 192, a rack 193, a gear shaft 196, a shield 197, a spring 199, and an end cap 1910. The piston body 192, the rack 193, the gear shaft 196, the baffle cover 197 and the spring 199 are all arranged in the cavity 191, and the end cover 1910 is connected with the cavity 191 through threads; the piston body 192 is fixed with one end of the rack 195 by a bolt 194, the baffle cover 197 is connected with the other end of the rack 195 by a bolt 198, and the spring 199 is arranged on the baffle cover 197; the gear shaft 196 is vertically arranged on the cavity 191 and meshed with the rack 195; a seal 193 is disposed between the piston body 192 and the cavity 191.
As shown in fig. 3 and 4, the pilot-controlled shutoff valve 27 includes: the valve comprises a valve body 271, a valve seat 273, a guide seat 275, a first combined seal 276, a valve core 277, a cylinder sealing ring 278, a piston 279, an indicating pin 2710, a blocking cover 2711, an upper cover 2713, a first pressure spring 2714, a lower cover 2715, a second combined seal 2716, a first spring seat 2717, a second pressure spring 2718 and a second spring seat 2719;
a sealing gasket 272 is arranged between the valve body 271 and the valve seat 273; one end of the valve core 277 is fixed with the valve seat 273 through a set screw 274, and the other end of the valve core 277 is connected with one end of a piston 279; an indicator pin 2710 is mounted to the other end of the piston 279; a first pressure spring 2714 is arranged between the upper end of the piston 279 and the upper cover 2713; a cylinder seal ring 278 is arranged on the outer circle of the piston 279; a blocking cover 2711 is arranged at the top of the upper cover 2713, and an O-shaped ring 2712 is arranged; the lower cap 2715 is threaded to the valve body 271 and is fitted with an O-ring 2720. A guide seat 275, a first combined seal 276, a first spring seat 2717, a second pressure spring 2718, a second spring seat 2719 and a second combined seal 2716 are arranged in a cavity of the lower cover 2715; the upper cover 2713 is screwed on the lower cover 2715, and a sealing ring 2721 is arranged between the upper cover 2713 and the lower cover 2715.
As an optional embodiment, the air storage tank 4 is provided with a safety valve 7, a water discharging switch 5 and an external inflation switch 6.
As an optional embodiment, further comprising: the check valve 8, the pressure regulating valve 9 and the vehicle-mounted air compressor 10 are connected in sequence; the vehicle-mounted air compressor charges the air storage tank 4 through the pressure regulating valve 9 and the one-way valve 8.
As an optional embodiment, the method further comprises: and the air pressure gauge 13 is respectively connected with the pressure regulating valve 9 and the filter 11.
As an optional embodiment, further comprising: and a damper control cylinder 18 connected to a third port of the protection solenoid valve 17 and a third port of the oil pilot protection valve 22, respectively.
As an optional embodiment, further comprising: the pressure sensor 23 is connected to the oil pilot protection valve 22.
As an alternative embodiment, the pilot-controlled cut-off valve 27 is connected to the ECU control switch 21 through the connecting rocker arm 20.
The working principle of the gas-electricity combined control starting system for the mine explosion-proof vehicle is as follows:
1) before starting the vehicle, the air switch valve 12 is opened, the pressure indicated by the air pressure gauge 13 is observed, when the pressure is lower than 0.6MPa, the external inflation switch 6 is opened, and the air storage tank 4 is inflated by the external air source until the pressure reaches 0.8 MPa. The gas storage tank 4 is provided with a safety valve 7 and a water discharge switch 5. The safety valve can ensure the pressure relief of the air storage tank when the air storage tank meets the accident ultrahigh pressure, ensure that the air storage tank does not have safety accidents, and the drain switch periodically discharges condensed water generated in the system due to temperature and pressure changes, so as to ensure the volume and the dryness of the compressed air in the system. After the vehicle normally runs, the vehicle-mounted air compressor 10 inflates air into the air storage tank through the pressure regulating valve 9 and the one-way valve 8.
2) Before starting, the miniature air source switch valve 12 is opened, and the compressed air in the air storage tank 4 passes through the filter 11 to reach the first port of the toggle switch valve 14 and the first port of the electromagnetic switch valve 15, wherein the first ports of the two valves are not communicated. When the vehicle needs to be manually started, the toggle switch valve 14 is toggled to a starting position, namely the valve is switched to a left position, at this time, a first port of the toggle switch valve 14 is communicated with a second port, and reaches a second port of the first shuttle valve 16, the first port of the first shuttle valve 16 is communicated with a third port of the electromagnetic switch valve 15 through a fifth port, and therefore compressed air is communicated with the third port through the second port of the first shuttle valve 16. The signal is divided into two paths, one path reaches a control port of the pneumatic-electric linkage device 19, the device is enabled to act to push the ECU switch 21 to be opened, the other path reaches the first port of the protection electromagnetic valve 17, and the first port of the protection electromagnetic valve 17 is in a sealed state. After the ECU is started, the protection electromagnetic valve 17 carries out self-checking, after all indexes are normal, the protection electromagnetic valve is electrified and is reversed to the right position, and at the moment, the first port and the third port of the protection electromagnetic valve 1 are communicated. One way into the damper control cylinder 18, which opens the cylinder. The other path reaches the first ports of the starting electromagnetic valve 24 and the air starting valve 25 through the third port and the second port of the engine oil pilot protection valve 22, and the two ports are in a blocking state. When the pneumatic start valve 25 is pressed down, the valve is reversed to the left position, compressed air reaches the first port of the pneumatic motor through the first port and the second port of the valve and the second port and the third port of the second shuttle valve 26 to push the pinion, and after the compressed air is pushed out, the compressed air reaches the third port of the main control valve 2 through the first port and the second port to reverse the main control valve 2 to the lower position. Meanwhile, the compressed air from the third port of the second shuttle valve 26 enters the third port of the pilot control stop valve 27 to push the valve to act, so that the first port (i) and the second port (ii) of the valve are communicated, thus, the large-flow compressed air from the air storage tank pushes the pneumatic motor to rotate through the first port (i) and the second port (ii) of the valve, the Y-shaped filter 2 and the first port (i) and the second port (ii) of the main control valve 2, so that the two vehicles are started.
3) When the vehicle needs to be started remotely, the electromagnetic switch valve 15 is powered on, the electromagnet is powered on, the electromagnetic valve is reversed, the first port is communicated with the third port, one path of the electromagnetic valve reaches the control port of the pneumatic-electric linkage device 19 after passing through the first port and the third port of the first shuttle valve 16, the device operates to push the ECU switch 21 to be opened, the other path of the electromagnetic valve reaches the first port of the protection electromagnetic valve 17, and the first port is in a sealed state. After the ECU is started, the protection electromagnetic valve 17 carries out self-checking, after all indexes are normal, the protection electromagnetic valve is electrified and is reversed to the right position, and the first port is communicated with the third port. One way into the damper control cylinder 18, which opens the cylinder. The other path reaches the first ports of the starting electromagnetic valve 24 and the air starting valve 25 through the third port and the second port of the engine oil pilot protection valve 22, and the two ports are in a blocking state. When the solenoid valve 24 is turned on by remote control, the valve is switched to right position, the compressed air reaches the first port of the air motor via the first port and the third port of the valve, and the first port and the third port of the second shuttle valve 26 push the pinion, and after the compressed air is pushed out, the compressed air reaches the third port of the main control valve 2 via the first port and the second port to reverse the main control valve to lower position. Meanwhile, the compressed air from the third port of the second shuttle valve 26 enters the third port of the pilot control stop valve 27 to push the valve to act, and the first port (i) and the second port (ii) of the valve are communicated, so that the large-flow compressed air from the air storage tank pushes the pneumatic motor to rotate through the first port (i) and the second port (ii) of the valve, the Y-shaped filter 2 and the first port (i) and the second port (ii) of the main control valve 2, and the two vehicles are started.
4) After the vehicle is manually started, the air starting valve 25 is released, as shown in fig. 1, a controller in the air motor is released through the valve, meanwhile, after the vehicle is started, the engine oil pressure is built to push the engine oil pilot protection valve 22 to be reversed to the left position, compressed air from the main control loop reaches the third port of the valve to be blocked, even if the air starting valve 25 is pressed down again, the compressed air cannot enter the control port of the air motor, and the gear beating fault caused by the extension of a pinion due to misoperation of the air motor is avoided.
5) When the vehicle is started by remote control, after the vehicle is started, the oil pressure is built, the starting electromagnetic valve 24 is powered off by sending an instruction through the pressure sensor 23, the controller in the air motor is released through the valve, meanwhile, the oil pressure is built to push the oil pilot protection valve 22 to be reversed to the left position, compressed air from the main control loop reaches the third port of the valve and is blocked, even if the air starting valve 25 is pressed down again, the compressed air cannot enter the control port of the air motor, and the protection air motor cannot cause tooth punching failure due to the fact that a small gear stretches out due to misoperation.
6) The remote control starting implementation mode comprises the following steps: as long as the electromagnetic switch valve 15 is opened, compressed air passes through the valve control gas-electricity linkage device 19, the ECU control switch 21 is opened, a self-checking instruction is sent to the protection electromagnetic valve 17 at this time, after the self-checking is correct, the starting electromagnetic valve 24 is electrified, the vehicle is started, after the vehicle is started, the pressure sensor 23 feeds back the starting electromagnetic valve 24, the valve is powered off, and one-key starting is realized.
7) The electro-pneumatic linkage 19 is connected to the ECU control switch by a connecting rocker arm 20. The pneumatic-electric linkage device consists of a cavity 191, a piston body 192, a rack 195, a gear shaft 196, a baffle cover 197, a spring 199 and an end cover 1910. The piston body is fixed to the rack by bolts 194, and the stopper cover 197 is connected to the rack by bolts 198. The spring 199 is seated on the stopper 197, the piston body is integrally connected to the rack and the cover plate, and assembled in the cavity, the packing 193 is installed between the piston body and the cavity, and the gear shaft is vertically installed on the cavity to be engaged with the rack. End cap 1910 is threaded onto the cavity. When compressed air enters the cavity, the piston body and the rack are pushed to move rightwards, the spring 199 is compressed, and in the moving process of the rack, the gear shaft 196 rotates along with the piston body and the rack, and the switch is controlled to be switched on by connecting the rocker arm control ECU. After flame off, the compressed air is released, the piston body and the rack reset under the action of the spring 199, and the ECU control switch is converted to the closed position. The opening and closing of the electrical system are realized through a pneumatic device.
8) The pilot control stop valve is mainly applied to remotely controlling the opening and closing of a small-flow switch valve, and is particularly suitable for the situation that a large pneumatic pressure retaining valve is inconvenient to install due to the narrow installation space of a cab. The use function can be ensured, and the requirement of convenient operation is met. The control air source is provided by a micro air source switch valve in normal times. When the air starting valve is operated or the electromagnetic valve is started only when the vehicle is started and needs large flow of compressed air, the compressed air passes through the two valves to the air motor control port and simultaneously controls the pilot control stop valve.
9) In the pilot control stop valve, a valve core 277 is fixed with a valve seat 273 through a set screw 274, and a sealing gasket 272 is arranged between the valve seat 273 and a valve body 271; the lower cover 2715 is connected with the valve body 271 through threads and is provided with an O-ring 2720; the other end of the valve core 277 is connected with a piston 279; the cavity of the lower cover is internally provided with a guide seat 275, a first combined seal 276, a second spring seat 2719, a second pressure spring 2718, a first spring seat 2717 and a combined seal 2716. The upper cover 2713 is screwed on the lower cover 2715, and a sealing ring 2721 is arranged between the upper cover 2713 and the lower cover 2715; an indicator pin 2710 is mounted on the other end of the piston 279; a first pressure spring 2714 is arranged between the upper end of the piston 279 and the upper cover 2713; the top of the upper cover 2713 is provided with a blocking cover 2711. In the initial position as shown in fig. 3, the piston and valve core assembly is in the lower position under the action of the first pressure spring 2714, and the valve seat 273 is tightly pressed on the valve body 271 by the sealing gasket 272, so that the air flow from the first port (i) to the second port (ii) of the pilot-controlled stop valve is blocked. The piston 279 is made into a special structure, the upper end of the piston except for the connecting indicator pin 2710 simultaneously uses an outer circumference circle as a guide seat of the first pressure spring 2714; the upper end of the upper cover 2713, besides guiding the movement of the piston assembly, also serves as a guide seat for the first compression spring 2714; first composite seal 276 and second composite seal 2716 are mounted facing away from each other to avoid leakage of control gas and large flows of gas. The valve core is in a floating state under the action of the spring, so that the friction loss is reduced, and the phenomenon of sticking caused by the movement of the valve core can be properly absorbed; the guide seat 275 realizes the vertical movement state of the valve core and avoids the generation of radial force. The valve has novel structure and convenient installation.
10) When a large flow of compressed air is needed for starting the vehicle, when the air starting valve or the electromagnetic valve is operated, the compressed air enters the third port of the pilot control stop valve through the two valves to push the piston 279 to move upwards, the valve core 277 is connected with the piston and moves upwards at the same time to drive the valve seat 273 to move upwards, so that a channel from the first port to the second port of the pilot control stop valve is opened, as shown in fig. 4.
The invention can be applied to all mining explosion-proof diesel engine vehicles, can ensure the remote control of the vehicles and simultaneously reserve the original manual operation starting function in the field of intelligent control of the current mines, and meets the requirements of different configurations of the mining vehicles.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. The utility model provides a mining explosion-proof vehicle gas-electricity combined control start-up system which characterized in that includes: the system comprises an air motor, a main control valve, a Y-shaped filter, an air storage tank, a filter, a miniature air source switch valve, a toggle switch valve, an electromagnetic switch valve, a first shuttle valve, a protection electromagnetic valve, an air-electricity linkage device, an ECU control switch, an engine oil pilot protection valve, a starting electromagnetic valve, an air starting valve, a second shuttle valve and a pilot control stop valve;
one end of the gas storage tank is connected with one end of the miniature gas source switch valve through the filter; the other end of the micro air source switch valve is respectively connected with the first port of the toggle switch valve and the first port of the electromagnetic switch valve, the second port of the toggle switch valve is connected with the second port of the first shuttle valve, and the third port of the electromagnetic switch valve is connected with the first port of the first shuttle valve; the third port of the first shuttle valve is respectively connected with the first port of the protection electromagnetic valve and one end of the pneumatic-electric linkage device; the other end of the gas-electric linkage device is connected with the ECU control switch; the third port of the protection electromagnetic valve is connected with the third port of the engine oil pilot protection valve, and the second port of the engine oil pilot protection valve is respectively connected with the first port of the starting electromagnetic valve and the first port of the pneumatic starting valve; the third port of the starting electromagnetic valve is connected with the first port of the second shuttle valve, and the second port of the pneumatic starting valve is connected with the second port of the second shuttle valve; the third port of the second shuttle valve is respectively connected with the third port of the pilot control stop valve and the first port of the air motor; the air motor, the main control valve and the Y-shaped filter are sequentially connected, and the Y-shaped filter is also connected with a second port of the pilot control stop valve; and the first port of the pilot control stop valve is connected with the air storage tank.
2. The gas-electricity combined control starting system for the mining explosion-proof vehicle as claimed in claim 1, wherein a safety valve, a water discharge switch and an external inflation switch are arranged on the gas storage tank.
3. The gas-electric combined control starting system for the mining explosion-proof vehicle as claimed in claim 1, further comprising: the one-way valve, the pressure regulating valve and the vehicle-mounted air compressor are sequentially connected; and the vehicle-mounted air compressor inflates the air storage tank through the pressure regulating valve and the one-way valve.
4. The gas-electric combined control starting system for the mining explosion-proof vehicle as claimed in claim 3, characterized by further comprising: and the air pressure gauge is respectively connected with the pressure regulating valve and the filter.
5. The gas-electric combined control starting system for the mining explosion-proof vehicle as claimed in claim 1, further comprising: and the air door control cylinder is respectively connected with the third port of the protection electromagnetic valve and the third port of the engine oil pilot protection valve.
6. The gas-electric combined control starting system for the mining explosion-proof vehicle as claimed in claim 1, further comprising: and the pressure sensor is connected with the engine oil pilot protection valve.
7. The mining explosion-proof vehicle gas-electric combined control starting system according to claim 1, wherein the pilot-controlled stop valve is connected with the ECU control switch through a connecting rocker arm.
8. The mining explosion-proof vehicle gas-electric combined control starting system according to claim 1, wherein the gas-electric linkage device comprises a cavity, a piston body, a rack, a gear shaft, a baffle cover, a spring and an end cover; the piston body, the rack, the gear shaft, the baffle cover and the spring are all arranged in the cavity, and the end cover is connected with the cavity through threads; the piston body is connected with one end of the rack, the blocking cover is connected with the other end of the rack, and the spring is arranged on the blocking cover; the gear shaft is vertically arranged on the cavity and meshed with the rack; and a sealing ring is arranged between the piston body and the cavity.
9. The mining explosion-proof vehicle gas-electric combined control starting system according to claim 1, wherein the pilot-controlled stop valve comprises: the valve comprises a valve body, a valve seat, a guide seat, a first combined seal, a valve core, a cylinder body seal ring, a piston, an indicating pin, a blocking cover, an upper cover, a first pressure spring, a lower cover, a second combined seal, a first spring seat, a second pressure spring and a second spring seat;
a sealing gasket is arranged between the valve body and the valve seat; one end of the valve core is fixed with the valve seat, and the other end of the valve core is connected with one end of the piston; the other end of the piston is provided with an indicating pin; a first pressure spring is arranged between the upper end of the piston and the upper cover; a cylinder body sealing ring is arranged on the excircle of the piston; the top of the upper cover is provided with the plug cover; the lower cover is connected with the valve body through threads, and a guide seat, a first combined seal, a first spring seat, a second pressure spring, a second spring seat and a second combined seal are arranged in a cavity of the lower cover; the upper cover is connected with the lower cover.
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