Parking device of masking system

Abstract

The utility model relates to the field of braking of underground mining transport vehicles, in particular to a parking device of a masking system, which comprises a transport vehicle, an engine cabin and a control system, the transport vehicle comprises a cab, the engine cabin is mounted on the transport vehicle and positioned on the rear side of the cab, a parking hand gear switch is mounted in the cab, and the control system is connected with the parking hand gear switch. The control system comprises an electromagnetic valve support, an electromagnetic valve and an oil pressure sensor, the electromagnetic valve support is installed outside an engine cabin, the electromagnetic valve is installed on the electromagnetic valve support, and the electromagnetic valve comprises a flameout masking electromagnetic valve, a masking device control electromagnetic valve, an automatic parking electromagnetic valve and a release brake valve. The parking hand gear switch controls the blocking device to control the electromagnetic valve, so that major safety accidents such as car sliding occurring in the non-standard driving process of an operating worker using the underground mining transport vehicle are avoided, and the problem of parking of the vehicle when the operating worker directly gets off the vehicle without pulling a parking main valve for parking after the operating worker stops the vehicle and shuts down (or does not shut down) is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of underground mine transport vehicle braking, in particular to a parking device of a cover system. BACKGROUND

[0002] At present, due to the illegal operation of workers using underground mine transport vehicles in the underground transportation process, the parking hand switch is not pulled up and the workers directly get off the vehicle, which leads to more serious accidents of the transport vehicle sliding. At the same time, the cab of the commonly used transport vehicle in the mine is relatively narrow, and the operator is not convenient to pull the lower main valve, so the probability of illegal operation is high during the operation of the operator. CONTENT OF THE UTILITY MODEL

[0003] The utility model provides a parking device of a cover system, when the parking main valve is not pulled up, the hand stop prevents the worker from getting off the vehicle, and after the worker pulls up the hand valve and gets off the vehicle, the cover system is stretched for physical parking, which solves the major safety accidents such as sliding of the vehicle during the non-standard driving process of the workers using the underground mine transport vehicle, and realizes the parking problem of the vehicle when the workers get off the vehicle directly after parking and turning off the engine (or not turning off the engine) without pulling the parking main valve.

[0004] In order to achieve the above object, the utility model adopts the technical scheme: a parking device of a covering system, including transport vehicle, engine cabin and control system, the transport vehicle includes the cab, the engine cabin is installed on the transport vehicle and is located the rear side of the cab, installs in the cab and is parked hand stop switch, the control system includes solenoid valve support, solen valve and oil pressure sensor, the solenoid valve support is installed outside the engine cabin, the solen valve is installed on the solenoid valve support, the solen valve includes the flameout covering solen valve, covering device control solen valve, automatic parking solen valve and release brake valve, the parked hand stop switch controls covering device control solen valve, installs in the engine cabin and is energy storage tank and double gear pump, the energy storage tank includes first energy storage tank and second energy storage tank, the double gear pump is transmission connection with the output end of engine, the oil tank is linked together with double gear pump, one way of the oil outlet of double gear pump is linked together with the oil tank through the oil outlet pipe, another way is connected to the transport vehicle brake hand valve oil inlet, again by the transport vehicle brake hand valve oil outlet is connected to the transport vehicle parking single-acting oil cylinder, the transport vehicle parking single-acting oil cylinder is linked together with the oil inlet of release brake valve, the oil outlet of release brake valve is connected to the oil inlet of automatic parking solen valve, the oil outlet of automatic parking solen valve is linked together with the oil tank, the first energy storage tank is parallelly connected and is arranged on the oil way between double gear pump and transport vehicle brake hand valve, installs in the covering device and is double-acting oil cylinder, the double gear pump is linked together with double-acting oil cylinder through two oil pipes, two oil pipes are parallelly connected, one way is installed with covering device control solen valve, the oil inlet of covering device control solen valve is connected with the rodless cavity of double-acting oil cylinder, and the oil return line is connected with the rod cavity of double-acting oil cylinder, another way is provided with the flameout covering solen valve, the oil inlet of flameout covering solen valve is connected with the rodless cavity of double-acting oil cylinder, and the oil return line is connected with the rod cavity of double-acting oil cylinder, the second energy storage tank is arranged on the oil way between the double gear pump and the flameout covering solen valve, the covering device still includes installation support and rocker mechanism, the installation support is welded on the frame, one end of double-acting oil cylinder is installed on the installation support, and the rocker mechanism is installed on the installation support through the cylindrical pin, the hydraulic rod of double-acting oil cylinder is rotatably connected with the rocker mechanism, one end of parking release switch is connected with release brake valve, and the other end is connected with remote parking relay, the remote parking relay is connected with covering device control solen valve, still includes battery, the positive electrode of battery is connected with door stop switch, the main order switch is connected in series between the battery and door stop switch, the negative electrode of battery is connected with remote parking controller, the main order switch is connected with flameout covering solen valve, the door stop switch is connected with covering device control solen valve, the automatic parking solen valve is connected with remote parking relay and remote parking controller.

[0005] Preferably, an oil pressure sensor is arranged in parallel on the oil path between the parking truck and the action oil cylinder and the unbrake valve;

[0006] Preferably, a one-way valve is arranged on the oil path between the second energy storage tank and the double gear pump, and the one-way valve is used to prevent the second energy storage tank from returning oil;

[0007] Preferably, a parking indicator and a pressure sensor are further included, and the parking indicator and the pressure sensor are connected with the main switch for sound and light reminding;

[0008] Preferably, an overflow valve is arranged between the oil outlet of the double gear pump and the oil tank through an oil outlet pipe, and the overflow valve is used to stabilize the pressure of the oil outlet pipe and prevent the internal oil pressure from being too large to cause the double gear pump to burst.

[0009] The beneficial effects of the above technical scheme are:

[0010] The above technical scheme solves the major safety accidents such as vehicle sliding during the non-standard driving of the operation workers using the underground mine transport vehicle, and realizes the parking of the vehicle when the operation workers directly get off the vehicle without pulling the parking main valve after the vehicle is parked and turned off (or not turned off). BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is a working principle diagram of the off-parking state of the utility model;

[0012] Fig. 2 It is a simple schematic diagram of the cover device of the utility model;

[0013] Fig. 3 It is a three-dimensional schematic diagram of the transport vehicle body.

[0014] The marks in the figure correspond to: 1 - cab, 2 - parking hand brake switch, 3 - off cover electromagnetic valve, 4 - cover device control electromagnetic valve, 5 - automatic parking electromagnetic valve, 6 - unbrake valve, 7 - double gear pump, 8 - first energy storage tank, 9 - second energy storage tank, 10 - double-acting oil cylinder, 11 - overflow valve, 12 - transport vehicle brake hand valve, 13 - transport vehicle parking single-acting oil cylinder, 14 - oil pressure sensor, 15 - one-way valve, 16 - oil tank, 17 - mounting bracket, 18 - rocker mechanism, 19 - supporting leg, 20 - parking release switch, 21 - remote parking relay, 22 - storage battery, 23 - door stop switch, 24 - main switch, 25 - remote parking controller, 26 - parking indicator, 27 - pressure sensor. DETAILED DESCRIPTION

[0015] The specific embodiments of the utility model are further explained in detail by the description of the embodiments with reference to the drawings, the purpose is to help the technical personnel in the field to have more complete, accurate and deep understanding to the conception, technical scheme of the utility model, and help to implement.

[0016] As Figs. 1-3 The utility model discloses a parking device of a covering system, solves the major safety accidents such as coasting of the worker in the process of not standard driving in the use of the underground mine transport car, realizes the parking problem of the vehicle when the worker extinguishes the fire (or does not extinguish the fire) and does not pull the parking main valve and directly gets off the car after parking.

[0017] The invention discloses a parking system, which comprises an engine cabin, a parking device and a control system. The parking device is installed on the front and back positions of the rear wheels of a transport vehicle. The transport vehicle comprises a cab. A parking hand switch is installed in the cab. The engine cabin is installed on the transport vehicle and located at the back of the cab. The control system comprises an electromagnetic valve support, an electromagnetic valve and an oil pressure sensor. The electromagnetic valve support is installed outside the engine cabin. The electromagnetic valve is installed on the electromagnetic valve support. The electromagnetic valve comprises an engine-off parking electromagnetic valve, a parking device control electromagnetic valve, an automatic parking electromagnetic valve and a brake release valve. The parking hand switch is used to control the parking device control electromagnetic valve. When the parking hand switch is put down, the transport vehicle is in a driving position. The parking hand switch can prevent the operator from getting off the vehicle. The parking system is in a driving state. When the parking hand switch is lifted up, the transport vehicle is in a parking position. The parking hand switch cannot prevent the operator from getting off the vehicle. The parking system is in a parking state. An energy storage tank and a double gear pump are installed in the engine cabin. The energy storage tank comprises a first energy storage tank and a second energy storage tank. The double gear pump is in transmission connection with the output end of the engine. An oil tank is connected with the oil inlet of the double gear pump. One oil outlet of the double gear pump is connected with the oil tank through an oil outlet pipe. An overflow valve is arranged between the oil outlet pipes and used for stabilizing the pressure of the oil outlet pipe and preventing the double gear pump from being damaged due to the excessive internal oil pressure. The oil outlet pipe supplies oil for the parking device. In order to comprehensively ensure the stability of the hydraulic system during use and the reaction efficiency of the automatic parking system, the pressure is controlled at 6MPa by using the overflow valve. Another oil outlet is connected with the oil inlet of a brake hand valve of the transport vehicle. The oil outlet of the brake hand valve is connected with a parking single-acting oil cylinder of the transport vehicle. The parking single-acting oil cylinder connects the oil with the oil inlet of the brake release valve. An oil pressure sensor is arranged in parallel on the oil path. The oil outlet of the brake release valve is connected with the oil inlet of an automatic parking electromagnetic valve. The oil outlet of the automatic parking electromagnetic valve is connected with the oil tank. The first energy storage tank is arranged in parallel on the oil path between the double gear pump and the brake hand valve of the transport vehicle. A double-acting oil cylinder is installed in the parking device. The double gear pump is connected with the double-acting oil cylinder through two oil pipes. The two oil pipes are connected in parallel. One oil pipe is provided with the parking device control electromagnetic valve. The oil inlet of the parking device control electromagnetic valve is connected with the rodless cavity of the double-acting oil cylinder. The oil return path is connected with the rod cavity of the double-acting oil cylinder. When the parking system falls, the parking system is in a parking state. The other oil pipe is provided with the engine-off parking electromagnetic valve. The oil inlet of the engine-off parking electromagnetic valve is connected with the rodless cavity of the double-acting oil cylinder. The oil return path is connected with the rod cavity of the double-acting oil cylinder. The second energy storage tank is arranged on the oil path between the double gear pump and the engine-off parking electromagnetic valve. A check valve is arranged on the oil path between the second energy storage tank and the double gear pump. The check valve is used for preventing the oil in the second energy storage tank from flowing back. The starting pressure of the second energy storage tank is 4MPa.The specific capacity of the energy storage tank is 4L, mainly used for vehicle power-off and engine-off, oil pressure supply after the double gear pump 7 stops working, when the vehicle starts, the first energy storage tank 8 automatically continues to fill the oil until the pressure in the cavity of the double-acting oil cylinder 10 reaches 6MPa, when the vehicle is off, the engine-off cover-up solenoid valve 3 is in the open state, the oil pressure in the second energy storage tank 9 cannot directly return to the oil tank 16 due to the blockage of the one-way valve 15, the oil pressure flows into the rodless cavity of the double-acting oil cylinder 10 through the oil inlet of the engine-off cover-up solenoid valve 3, the oil pressure in the rod cavity of the double-acting oil cylinder 10 returns to the oil tank 16 through the oil return port of the engine-off cover-up solenoid valve 3, and the cover-up function is completed. The cover-up device includes a mounting bracket 17 and a rocker mechanism 18, the mounting bracket 17 is welded on the vehicle frame, one end of the double-acting oil cylinder 10 is mounted on the mounting bracket 17, the rocker mechanism 18 is mounted on the mounting bracket 17 through a cylindrical pin, and the hydraulic rod of the double-acting oil cylinder 10 is rotatably connected with the rocker mechanism 18 for driving the lower half of the rocker mechanism 18 to clamp the vehicle wheel.

[0018] When the parking hand switch 2 is in the driving position, the cover-up device control solenoid valve 4 connects the rod cavity of the double-acting oil cylinder 10 through the oil inlet, and the cover-up device control solenoid valve 4 connects the rodless cavity of the double-acting oil cylinder 10 through the oil return port, the cover-up system is lifted, and the cover-up system is in the driving state. When the parking hand switch 2 is in the parking position, the parking hand switch 2 cannot block the operator from getting off the vehicle, the cover-up device control solenoid valve 4 connects the rodless cavity of the double-acting oil cylinder 10 through the oil inlet, and the cover-up device control solenoid valve 4 connects the rod cavity of the double-acting oil cylinder 10 through the oil return port, the cover-up system is lowered, and the cover-up system is in the parking state.

[0019] The parking release switch 20 is connected with the release brake valve 6 at one end and connected with the remote parking relay 21 at the other end, the remote parking relay 21 is connected with the cover-up device control solenoid valve 4, further comprising a storage battery 22, the positive electrode of the storage battery 22 is connected with a door stop switch 23, a main switch 24 is connected in series between the storage battery 22 and the door stop switch 23, the negative electrode is connected with a remote parking controller 25, the main switch 24 is connected with the engine-off cover-up solenoid valve 3, the door stop switch 23 is connected with the cover-up device control solenoid valve 4, the automatic parking solenoid valve 5 is connected with the remote parking relay 21 and the remote parking controller 25, a parking indicator 26 and a pressure sensor 27 are connected with the main switch 24.

[0020] There are three situations in use, which are automatic parking, parking after pulling the hand valve and automatic braking after engine off. When the vehicle is parked and engine is off, the main switch 24 is disconnected or the door stop switch 23 is disconnected, at this time, the automatic parking circuit is: the automatic parking electromagnetic valve 5 is powered off, the parking circuit hydraulic oil is automatically returned to the tank 16, the parking spring is reset to realize automatic parking, the automatic parking circuit is: the parking device control electromagnetic valve 4 is powered off to switch the main oil circuit to the middle position, the engine off parking electromagnetic valve 3 is powered off to connect the double-acting oil cylinder 10, so that the supporting leg 19 of the parking device extends to block the rear wheel movement, when the vehicle is running normally, the automatic parking circuit is: the main switch 24 and the door stop switch 23 are closed, the automatic parking electromagnetic valve 5 is powered on, the hydraulic oil enters the transport vehicle parking single-acting oil cylinder 13 to release the brake, the automatic parking circuit is: the main switch 24 and the door stop switch 23 are closed, the parking device control electromagnetic valve 4 is powered on to switch to the double-acting oil cylinder 10 to enter the oil to release the rear wheel restriction.

[0021] Automatic parking: when the vehicle stops, the driver does not pull the transport vehicle brake hand valve 12, at this time, the transport vehicle brake system inlet pipe is disconnected, the oil pressure in the transport vehicle parking single-acting oil cylinder 13 returns to the transport vehicle return oil circuit, the automatic parking electromagnetic valve 5 is pulled off, the parking device control electromagnetic valve 4 connects the double-acting oil cylinder 10 without rod cavity, when the parking device system inlet pipe connects the double-acting oil cylinder 10 without rod cavity and the return pipe connects the double-acting oil cylinder 10 with rod cavity, the double-acting oil cylinder 10 is stretched to drive the parking device to lock the rear wheel. When the vehicle is in the parking state, the pressure sensor 27 controls the sound and light to remind;

[0022] Pulling the hand valve after parking: when the vehicle stops, the driver pulls the transport vehicle brake hand valve 12, at this time, the transport vehicle brake system inlet pipe is disconnected, the oil pressure in the transport vehicle parking single-acting oil cylinder 13 returns to the transport vehicle return oil circuit, the automatic parking electromagnetic valve 5 is pulled off, the parking device control electromagnetic valve 4 connects the double-acting oil cylinder 10 without rod cavity, when the parking device system inlet pipe connects the double-acting oil cylinder 10 without rod cavity and the return pipe connects the double-acting oil cylinder 10 with rod cavity, the double-acting oil cylinder 10 is stretched to drive the parking device to lock the rear wheel, when the vehicle is in the parking state, the pressure sensor controls the sound and light to remind;

[0023] Engine off automatic braking parking: when the vehicle stops, the driver does not pull the transport vehicle brake hand valve 12 and does not pull off the door stop, directly powers off and engine off, at this time, the transport vehicle brake hand valve 12 does not enter the oil, the engine off parking electromagnetic valve 3 is in the passage state, the oil pressure in the second energy tank 9 cannot directly return to the oil tank 16 due to the blockage of the one-way valve 15, the oil pressure in the second energy tank 9 flows into the double-acting oil cylinder 10 without rod cavity through the engine off parking electromagnetic valve 3 inlet, the oil pressure in the double-acting oil cylinder 10 with rod cavity returns to the tank through the engine off parking electromagnetic valve 3 return, to complete the engine off parking function.

[0024] The utility model is exemplarily described above in combination with the drawings, obviously, the utility model specific implementation is not limited by the above-mentioned mode, only if various non-essential improvements of adopting the method concept and technical scheme of the utility model are carried out, or the above-mentioned concept and technical scheme of the utility model are directly applied to other occasions without improvement, all are within the protection scope of the utility model.

Claims

1. A parking system for a truck, comprising a truck, an engine compartment and a control system, said truck comprising a cab (1), said engine compartment being mounted on the truck and located at the rear side of the cab (1), a parking hand brake switch (2) being installed in the cab (1), said control system comprising an electromagnetic valve support, an electromagnetic valve and an oil pressure sensor (14), said electromagnetic valve support being mounted on the outside of the engine compartment, said electromagnetic valve being mounted on the electromagnetic valve support, characterized in that: The electromagnetic valve includes a fire extinguishing cover electromagnetic valve (3), a cover device control electromagnetic valve (4), an automatic parking electromagnetic valve (5) and a release brake valve (6), the parking hand brake switch (2) controls the cover device control electromagnetic valve (4), an energy storage tank and a double gear pump (7) are installed in the engine compartment, the energy storage tank includes a first energy storage tank (8) and a second energy storage tank (9), the double gear pump (7) is in transmission connection with the output end of the engine, an oil tank (16) is in communication with the double gear pump (7), one way of the oil outlet of the double gear pump (7) is connected with the oil tank (16) through an oil outlet pipe, the other way is connected to the transport vehicle brake hand valve (12) oil inlet, and then the oil outlet of the transport vehicle brake hand valve (12) is connected to the transport vehicle parking single-acting oil cylinder (13), the transport vehicle parking single-acting oil cylinder (13) is in communication with the oil inlet of the release brake valve (6), the oil outlet of the release brake valve (6) is connected to the oil inlet of the automatic parking electromagnetic valve (5), the oil outlet of the automatic parking electromagnetic valve (5) is in communication with the oil tank (16), the first energy storage tank (8) is arranged in parallel on the oil path between the double gear pump (7) and the transport vehicle brake hand valve (12), a double-acting oil cylinder (10) is installed in the cover device, the double gear pump (7) and the double-acting oil cylinder (10) are connected through two oil pipes, the two oil pipes are in parallel, one way is provided with the cover device control electromagnetic valve (4), the oil inlet of the cover device control electromagnetic valve (4) is connected with the rodless cavity of the double-acting oil cylinder (10), the oil return path is connected with the rod cavity of the double-acting oil cylinder (10), the other way is provided with the fire extinguishing cover electromagnetic valve (3), the oil inlet of the fire extinguishing cover electromagnetic valve (3) is connected with the rodless cavity of the double-acting oil cylinder (10), and the oil return path is connected with the rod cavity of the double-acting oil cylinder (10), the second energy storage tank (9) is arranged on the oil path between the double gear pump (7) and the fire extinguishing cover electromagnetic valve (3), the cover device further includes a mounting bracket (17) and a rocker mechanism (18), the mounting bracket (17) is welded on the frame, one end of the double-acting oil cylinder (10) is mounted on the mounting bracket (17), the rocker mechanism (18) is mounted on the mounting bracket (17) through a cylindrical pin, the hydraulic rod of the double-acting oil cylinder (10) is rotatably connected with the rocker mechanism (18), one end of the parking release switch (20) is connected with the release brake valve (6), the other end is connected with the remote parking relay (21), the remote parking relay (21) is connected with the cover device control electromagnetic valve (4), further including a storage battery (22), the positive electrode of the storage battery (22) is connected with the door stop switch (23), a main switch (24) is connected in series between the storage battery (22) and the door stop switch (23), the negative electrode of the storage battery (22) is connected with the remote parking controller (25), the main switch (24) is connected with the fire extinguishing cover electromagnetic valve (3), the door stop switch (23) is connected with the cover device control electromagnetic valve (4).The automatic parking electromagnetic valve (5) is connected with a remote parking relay (21) and a remote parking controller (25).

2. A parking brake system according to claim 1, wherein: An oil pressure sensor (14) is connected in parallel to the oil circuit between the parking brake cylinder (13) and the release valve (6) when the transport vehicle is parked.

3. The parking system of claim 1, wherein: A one-way valve (15) is arranged in the oil circuit between the second accumulator (9) and the double gear pump (7).

4. The parking system of claim 1, wherein: A parking brake indicator light (26) and a pressure sensor (27) are also included, both of which are connected to the master switch (24).

5. The parking system of claim 1, wherein: An overflow valve (11) is arranged in the oil circuit between the oil outlet of the double gear pump (7) and the oil tank (16).

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