Pincer-shaped rail holding hydraulic braking system

Abstract

The invention relates to the technical field of clamping, in particular to a pincerlike rail holding hydraulic braking system which comprises a tractor, rail clamping devices are arranged in the middles of the two side faces of the tractor, a hydraulic system and a rail clamping device control circuit are arranged on the tractor, and the hydraulic system and the rail clamping device control circuit are both connected with a control system. The hydraulic system comprises a high-pressure pump and a pneumatic energy-saving hydraulic station, the high-pressure pump is provided with an oil outlet and an oil outlet pressure adjusting handle, and the oil outlet is communicated with the hydraulic push rod. Before a main machine walking mechanism starts to walk, an oil pump motor of the rail clamping device and a power source of an electromagnetic valve are connected, pressure oil pushes a piston and a compression spring so that a clamp can be opened, after the clamp is completely opened, a motor power source is cut off by a limiting switch, meanwhile, a main machine walking motor interlocking circuit is connected, and a motor is powered off. Due to the pressure maintaining effect of the one-way valve and the electromagnetic valve, the hydraulic system ensures that the clamp is located at the opening position, and high stability and reliability are achieved.

Description

Technical Field

[0001] The invention relates to a clamp-type rail-holding hydraulic brake system, in particular to a clamp-type rail-holding hydraulic brake system, and belongs to the technical field of clamping. Background Art

[0002] The rail clamp is a safety device that prevents track-mounted machinery from moving freely along the track. It is suitable for rail-mounted lifting and handling equipment such as bucket wheel machines, stackers and reclaimers in large freight yards and coal yards, and various bridge and gantry container cranes to resist wind and other external impact forces. When the main machine is shut down and out of use, the rail clamp automatically clamps the rails and holds the main machine to ensure that it is not blown away by the wind. When the main machine is started and used, the hydraulic device opens the clamp to ensure that the main machine can move freely on the track. The equipment has its own limit switch, and the normally open point forms a mechanical interlock with the trolley movement, which has a protective function.

[0003] The track clamp automatically opens when the main machine is in the moving state, and automatically clamps in other states. At the same time, without changing the original machine operation, the PLC system automatically controls the movement and stopping of the crane's traveling mechanism, the opening and braking of the brake, and the opening and clamping of the track clamp. However, the stability and reliability of the current track clamp are not high, and locking or failure to brake may occur. Therefore, there will be certain safety hazards and cause certain economic losses.

[0004] Therefore, there is an urgent need to improve the rail-holding brake device to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a clamp-type rail-holding hydraulic brake system. Before the main machine travel mechanism starts to move, the power supply of the oil pump motor and the solenoid valve of the rail clamp is turned on, so that the pressure oil pushes the piston and compresses the spring to open the clamp. After the clamp is fully opened, the power supply of the motor is cut off by the limit switch, and at the same time, the interlocking circuit of the main machine travel motor is turned on. After the motor is powered off, the hydraulic system ensures that the clamp is in the open position due to the pressure-maintaining effect of the one-way valve and the solenoid valve, and has high stability and reliability.

[0006] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0007] A clamp-type rail-holding hydraulic brake system comprises an iron bull, rail clamps are fixedly arranged in the middle of both sides of the iron bull, rail clamp guide wheels are arranged at the bottom of the rail clamps, and rails are connected to the bottom of the rail clamp guide wheels. A hydraulic system and a rail clamp control circuit are arranged on the iron bull, and both the hydraulic system and the rail clamp control circuit are connected to a control system. The terminal of this device is a protective safety device to prevent the carriage and the iron bull from sliding down as a whole after the wire rope of the traction iron bull breaks during normal operation. It is suitable for the wind resistance and other external impact resistance of rail-type lifting and handling equipment such as bucket wheel machines and gantry container cranes in large freight yards and coal yards with a certain slope. When the equipment receives a signal or detects a fault, the rail clamp can automatically clamp the rails and drag the traction equipment iron bull to ensure that the main engine stays in place to avoid accidents. When the main engine is started and used, the rail clamp is opened to ensure that the main engine can move freely on the track;

[0008] The rail clamp guide wheel is fixedly connected to the rail clamp through a spring base, a spring is fixedly connected to the spring base, the upper end of the spring is connected to the rail clamp arm through a connecting rod, a jaw is fixedly provided at the bottom of the rail clamp arm, the jaw is used to clamp the rail, and a hydraulic push rod is connected between the two rail clamp arms;

[0009] The clamping of the rail clamp is powered by a spring, and the rail is clamped through the spring base, connecting rod, rail clamp arm and jaws. The hydraulic power of the rail clamp is interlocked with the rail clamp control circuit, that is, the iron bull can only move after the clamp of the rail clamp is fully opened;

[0010] The opening of the control system on the rail clamp is operated by the hydraulic system in the iron bull equipment, and its working method is:

[0011] Through the rail clamp control circuit, before the iron bull moves, only the power supply of the hydraulic system is turned on, and the pressure oil enters the front chamber of the oil cylinder, pushing the hydraulic push rod and compressing the spring to open the rail clamp arm. After the rail clamp arm is safely opened, the iron bull walking interlock circuit is connected at the same time, and the iron bull starts to move. The hydraulic system ensures that the rail clamp arm is in the open position;

[0012] The hydraulic system includes a high-pressure pump and a pneumatic energy-saving hydraulic station connected to the high-pressure pump. The high-pressure pump is fixedly provided with a plurality of oil outlets and an oil outlet pressure regulating handle. While the superimposed solenoid valve is cut off, the clamping time of the rail clamp is appropriately adjusted through the oil outlet pressure regulating handle to ensure that the main machine can stop before the rail clamp arm contacts the rail. The high-pressure pump is connected to the pneumatic energy-saving hydraulic station, and the oil outlet is connected to the hydraulic push rod. A superimposed solenoid valve is arranged on the oil outlet, and the superimposed solenoid valve is electrically connected to the rail clamp control circuit. The bottom of the high-pressure pump is connected to an oil tank, and a pressure gauge is connected to the high-pressure pump to facilitate direct observation of the pressure inside the high-pressure pump. An oil outlet pressure gauge connected to the oil outlet is arranged on one side of the oil outlet, which is convenient to use and improves the safety of use.

[0013] The upper end of the fuel tank is provided with a fuel tank cap connected to the fuel tank, and a liquid level gauge is fixedly provided on the fuel tank. The input end of the liquid level gauge is provided inside the fuel tank. The height of the oil level inside the fuel tank can be conveniently checked through the liquid level gauge, thereby improving the convenience of use;

[0014] The pneumatic energy-saving hydraulic station is connected with an air inlet interface, which is connected to a manual pressure relief valve and an air source pressure gauge through an air pipe. An air duplex is connected between the air inlet interface and the manual pressure relief valve, and a gas switch is connected between the manual pressure relief valve and the high-pressure pump. The oil outlet pressure regulating handle is used to control the on-off of the airflow. The high-pressure air is connected to the manual pressure relief valve through the air inlet interface and then converted into hydraulic pressure. The boost ratio is 1:16. The pneumatic energy-saving hydraulic station is easy to use. This series of pneumatic hydraulic stations is fully equipped and does not require any external motors and oil accumulators, nor does it require power. The pneumatic energy-saving hydraulic station pushes the piston to generate boost pressure by compressed air entering the cylinder body. In this design, the cylinder has a mechanical reversing device. When the intake pressure is set to 0.5Mpa, if the oil pressure is less than 80 kg, the cylinder will automatically reciprocate and boost pressure. When the oil pressure reaches 80 kg, the cylinder automatically stops working to achieve continuous boost and continuous pressure maintenance. The ultimate design goal is to provide a steady stream of hydraulic power for the rail clamp;

[0015] A filter is connected between the oil tank and the high-pressure pump, a pipeline non-return valve is arranged between the high-pressure pump and the superimposed solenoid valve, an energy storage device is connected to the high-pressure pump, a high-pressure horizontal air storage tank is connected to the pneumatic energy-saving hydraulic station, the oil tank is connected to the gear pump through the pipeline non-return valve, the gear pump is connected to the motor, the motor is used to drive the gear pump to rotate, an overflow valve is arranged at the output end of the gear pump, the overflow valve is connected to the oil tank, due to internal leakage in the hydraulic system, after the rail clamp arm is opened, the opening degree will gradually decrease, after a period of time, when the opening degree is reduced to a certain extent, the gas switch will cut off the power supply to the motor, and the gear pump motor will quickly replenish oil to the hydraulic push rod as soon as it is energized, so that the hydraulic push rod returns to the fully opened position, at this time, the oil pump motor power supply is cut off and the time relay power supply is turned on, in this process, because the rail clamp limit switch and the trolley travel relay are interlocked, it will not affect the normal travel of the trolley;

[0016] The output end of the pipeline check valve is connected to the superimposed solenoid valve, and the output end of the pipeline check valve is connected to the throttle valve on the integrated block, and the throttle valve on the integrated block is connected to the hydraulic push rod. If the rail clamp is to clamp the rail, the superimposed solenoid valve should be powered off to allow the pressure oil to flow back into the oil tank. When the pressure oil flows back, it passes through the throttling effect of the throttle valve on the integrated block. Therefore, the closing time of the rail clamp arm can be adjusted at will by adjusting the oil outlet pressure adjustment handle.

[0017] Preferably, the rail clamp control circuit includes an electric control circuit, a rail clamp circuit and a rail clamp interlocking protection circuit. When the electric control circuit is cut off, the oil pressure regulating handle should be properly adjusted to adjust the time of the clamping process of the rail clamp to ensure that the main machine can stop before the hydraulic push rod contacts the rail. This is very important because the rail clamp must not be clamped when the iron cow is still walking, otherwise, the rail clamp and the rail will be damaged;

[0018] The electric control circuit includes a contactor KM and a thermal relay FR electrically connected to the high-pressure pump. The thermal relay FR is electrically connected to the external power supply through the air switch QF1 to improve the safety of use;

[0019] The contactor KM and the thermal relay FR are connected in series with a pressure relay. The contactor KM, the thermal relay FR and the pressure relay are connected in series and in parallel with the rail clamp control circuit. After the pressure relay is closed, the contactor KM is in a power-off state. Specifically:

[0020] Opening and maintaining pressure: The superimposed solenoid valve is energized to maintain pressure, the motor group is started, and the air switch QF1 is closed. When the mechanism is fully actuated, the system pressure increases. When the system pressure reaches the action pressure set by the pressure relay, the pressure relay sends a signal to stop the motor, and the superimposed solenoid valve is continuously energized to maintain pressure. The system is in a pressure-maintaining working state;

[0021] Close the gate: The system loses power, the superimposed solenoid valve is de-energized, the system is depressurized, the cylinder is reset, and the actuator is closed.

[0022] Further preferably, the control system includes a host computer and an uninterruptible power supply UPS. The model of the control system is S7-200SMART. The logic of the programmable controller is relatively flexible and can communicate directly with the iron bull to directly detect the working status of the traction system's heavy hammer frame limit and rope breaking protection device. The pressure relay establishes a communication connection with the host computer. The pressure relay can detect the pressure of the high-pressure horizontal gas storage tank and the hydraulic pressure detection. When the current pressure of the high-pressure horizontal gas storage tank is lower than the set pressure, the system will have its own alarm function to remind the on-site staff to pressurize the high-pressure horizontal gas storage tank in time until the set pressure is reached. After the hydraulic detection shows that the current pressure is lower than the set pressure, the system will clamp The rail clamp signal is temporarily stopped until the hydraulic pressure is greater than the set pressure, and the rail clamp can be restored and be on standby at any time. The upper computer is electrically connected with a speed detection module, a communication module and a display module. The communication module is a LORA wireless transparent transmission module. This system can directly communicate with the logic controller within three kilometers through the LORA wireless transparent transmission module. The communication speed is relatively fast, and there are many open protocol functions, which is convenient for flexible deployment on site. The display module can be embedded in the control system for display, which can directly display the current operating speed of this system, the remaining pressure of the high-pressure horizontal gas storage tank, the current pressure change of the rail clamp, etc., which is convenient for flexible use of this equipment;

[0023] The speed detection module is used to detect the speed of the iron ox. The movement speed of the iron ox includes:

[0024] The speed of loading a heavy truck is V1, the speed of returning to the nest without loading is V2, and the uncontrolled speed is V3, where V 1< V 2< At V3, the superimposed solenoid valve is powered off. Once the uncontrolled speed is greater than the previous two speeds, the control system will sense it immediately and then cut off the power to the superimposed solenoid valve on the pneumatic energy-saving hydraulic station. The rail clamp will immediately lock the rail and stop in place.

[0025] Further preferably, a traction clamp is fixedly provided at one end of the iron ox, a pulley fixing plate is fixedly provided at the other end of the iron ox between the rail clamps, a traction pulley is rotatably provided inside the pulley fixing plate, and an iron ox guide wheel corresponding to the rail is provided at the bottom of the iron ox, so as to facilitate the connection of the iron ox and improve the convenience of use; a mounting plate is fixedly provided at one side of the rail clamp, the mounting plate is fixedly connected to the spring base, the mounting plate is fixedly connected to the iron ox by bolts, and the rail clamp is fixed to the iron ox as a whole through the mounting plate, so as to improve the overall structural strength and stability of the rail clamp;

[0026] A side mounting hole is fixedly provided on one side of the oil tank, and the side mounting hole is fixed on the iron ox by screws. A protective plate is fixedly provided on the iron ox, and the hydraulic system, the track clamp control circuit and the control system are arranged inside the protective plate. The hydraulic system, the track clamp control circuit and the control system are all fixed inside the protective plate to prevent dust and oxidation and improve the service life of the device.

[0027] The present invention has at least the following beneficial effects:

[0028] 1. Before the main machine travel mechanism starts to move, turn on the power of the oil pump motor and the solenoid valve of the rail clamp, let the pressure oil push the piston and compress the spring to open the clamp. After the clamp is fully opened, the motor power is cut off by the limit switch, and the main machine travel motor interlocking circuit is turned on. After the motor is powered off, the hydraulic system maintains pressure due to the one-way valve and solenoid valve, thereby ensuring that the clamp is in the open position, with high stability and reliability.

[0029] 2. High-pressure air is connected to the manual pressure relief valve through the air intake interface and then converted into hydraulic pressure. The pressure increase ratio is 1:16. The pneumatic energy-saving hydraulic station is easy to use. This series of pneumatic hydraulic stations is fully equipped and does not require any external motors and oil accumulators, nor does it require a power supply. The pneumatic energy-saving hydraulic station uses compressed air to enter the cylinder body to push the piston to generate pressure. In this design, the cylinder has a mechanical reversing device. When the intake pressure is set to 0.5Mpa, if the oil pressure is less than 80 kg, the cylinder will automatically reciprocate and increase the pressure. When the oil pressure reaches 80 kg, the cylinder automatically stops working to achieve continuous pressure increase and continuous pressure maintenance. The ultimate design goal is to provide a steady supply of hydraulic power for the rail clamp.

[0030] 3. Due to internal leakage in the hydraulic system, after the arm of the track clamp is opened, the opening degree will gradually decrease. After a period of time, when the opening degree is reduced to a certain extent, the gas switch will cut off the power supply to the motor. Once the gear pump motor is energized, it will quickly replenish oil to the hydraulic push rod, so that the hydraulic push rod returns to the fully open position. At this time, the power supply of the oil pump motor is cut off and the power supply of the time relay is turned on. In this process, the limit switch of the track clamp and the trolley travel relay are interlocked, so it will not affect the normal travel of the trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0032] Figure 1 A top view of the iron bull of the present invention;

[0033] Figure 2 It is a structural diagram of the rail clamp of the present invention;

[0034] Figure 3 It is a structural diagram of the hydraulic system of the present invention;

[0035] Figure 4 It is the principle diagram of the hydraulic system of the present invention;

[0036] Figure 5 It is a schematic diagram of the hydraulic system of the present invention;

[0037] Figure 6 The electric control circuit diagram of the present invention;

[0038] Figure 7 The invention provides a track clamp circuit and a track clamp interlocking protection circuit diagram;

[0039] Figure 8 It is a schematic diagram of the system of the present invention;

[0040] Fig. 9 It is a side view of the rail clamp of the present invention;

[0041] Fig.10 It is a side view of the iron bull of the present invention.

[0042] In the figure, 1. Iron ox; 101. Traction chuck; 102. Pulley fixing plate; 103. Traction pulley; 104. Iron ox guide wheel; 105. Protective plate; 2. Rail clamp; 201. Rail clamp guide wheel; 202. Spring base; 203. Spring; 204. Connecting rod; 205. Rail clamp arm; 206. Hydraulic push rod; 208. Mounting plate; 3. Hydraulic system; 301. High-pressure pump; 302. Pneumatic energy-saving hydraulic station; 303. Oil outlet; 304. Superimposed solenoid valve; 305. Oil outlet pressure regulating handle; 306. Oil tank; 307. Pressure gauge; 308. Oil outlet pressure gauge; 309. Oil tank cover; 310. Liquid level gauge; 311. Air inlet interface; 312. Manual pressure relief valve; 313. Air source pressure gauge ; 314, air duplex; 315, gas switch; 316, filter; 317, pipeline non-return valve; 318, energy storage device; 319, high-pressure horizontal gas storage tank; 320, gear pump; 321, motor; 322, overflow valve; 323, throttle valve on integrated block; 324, side-mounting hole; 4, track clamp control circuit; 401, electric control circuit; 402, track clamp circuit; 403, track clamp interlocking protection circuit; 404, contactor KM; 405, thermal relay FR; 406, air switch QF1; 407, pressure relay; 5, control system; 501, host computer; 502, uninterruptible power supply UPS; 503, speed detection module; 504, communication module; 505, display module. DETAILED DESCRIPTION

[0043] The following will describe the implementation methods of the present application in detail with the help of accompanying drawings and examples, so that the implementation process of how the present application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0044] like Figure 1-Figure 10 As shown, the clamp-type rail-holding hydraulic brake system provided in this embodiment includes an iron ox 1, a rail clamp 2 is fixedly arranged in the middle of both sides of the iron ox 1, a rail clamp guide wheel 201 is arranged at the bottom of the rail clamp 2, and a rail is connected to the bottom of the rail clamp guide wheel 201. A hydraulic system 3 and a rail clamp control circuit 4 are arranged on the iron ox 1, and the hydraulic system 3 and the rail clamp control circuit 4 are both connected to a control system 5. The terminal of this device is a protective safety device to prevent the carriage and the iron ox 1 from sliding downward as a whole after the wire rope of the traction iron ox 1 breaks during normal operation. It is suitable for the wind resistance and other external impact resistance of rail-type lifting and handling equipment such as bucket wheel cranes and gantry container cranes in large freight yards and coal yards with a certain slope. When the equipment receives a signal or detects a fault, the rail clamp 2 can automatically clamp the rail and drag the traction equipment iron ox 1 to ensure that the main engine stays in place and avoid accidents. When the main engine is started and used, the rail clamp 2 opens to ensure that the main engine can walk freely on the track;

[0045] The rail clamp guide wheel 201 is fixedly connected to the rail clamp 2 through a spring base 202, a spring 203 is fixedly connected to the spring base 202, the upper end of the spring 203 is connected to a rail clamp arm 205 through a connecting rod 204, a jaw is fixedly provided at the bottom of the rail clamp arm 205, the jaw is used to clamp the rail, and a hydraulic push rod 206 is connected between the two rail clamp arms 205;

[0046] The clamping of the rail clamp 2 is powered by a spring 203, and the rail is clamped by a spring base 202, a connecting rod 204, a rail clamp arm 205 and a jaw. The hydraulic power of the rail clamp 2 is interlocked with the rail clamp control circuit 4, that is, the iron bull 1 can only move after the clamp of the rail clamp 2 is fully opened;

[0047] The opening of the control system 5 on the rail clamp 2 is operated by the hydraulic system 3 in the iron bull 1 equipment, and its working method is:

[0048] Through the rail clamp control circuit 4, before the iron bull 1 moves, only the power supply of the hydraulic system 3 is turned on, and the pressure oil enters the front chamber of the oil cylinder, pushing the hydraulic push rod 206 and compressing the spring 203 to open the rail clamp arm 205. After the rail clamp arm 205 is safely opened, the iron bull 1 travel interlocking circuit is turned on and starts to move. The hydraulic system 3 ensures that the rail clamp arm 205 is in the open position.

[0049] The hydraulic system 3 includes a high-pressure pump 301 and a pneumatic energy-saving hydraulic station 302 connected to the high-pressure pump 301. The high-pressure pump 301 is fixedly provided with a plurality of oil outlets 303 and an oil outlet pressure regulating handle 305. When the superimposed solenoid valve 304 is cut off, the clamping time of the rail clamp 2 is appropriately adjusted through the oil outlet pressure regulating handle 305 to ensure that the main machine can stop before the rail clamp arm 205 contacts the rail. The high-pressure pump 301 is connected to the pneumatic energy-saving hydraulic station 302, and the oil outlet 303 and the oil outlet pressure regulating handle 305 are fixedly provided on the high-pressure pump 301. The oil port 303 is connected to the hydraulic push rod 206, and a superimposed electromagnetic valve 304 is arranged on the oil outlet 303, and the superimposed electromagnetic valve 304 is electrically connected to the rail clamp control circuit 4. The bottom of the high-pressure pump 301 is connected to the oil tank 306, and the high-pressure pump 301 is connected to a pressure gauge 307, which is convenient for directly observing the pressure inside the high-pressure pump 301. An oil outlet pressure gauge 308 connected to the oil outlet 303 is arranged on one side of the oil outlet 303, which is convenient to use and improves the safety of use;

[0050] The upper end of the oil tank 306 is provided with an oil tank cover 309 connected to the oil tank 306. The oil tank 306 is fixedly provided with a liquid level gauge 310. The input end of the liquid level gauge 310 is arranged inside the oil tank 306. The height of the oil level inside the oil tank 306 can be conveniently checked through the liquid level gauge 310, thereby improving the convenience of use.

[0051] The pneumatic energy-saving hydraulic station 302 is connected with an air inlet interface 311, and the air inlet interface 311 is connected with a manual pressure relief valve 312 and an air source pressure gauge 313 through an air pipe. An air double body 314 is connected between the air inlet interface 311 and the manual pressure relief valve 312, and a gas switch 315 is connected between the manual pressure relief valve 312 and the high-pressure pump 301. The oil outlet pressure regulating handle 305 is used to control the on and off of the air flow. The high-pressure air is connected to the manual pressure relief valve 312 through the air inlet interface 311 and then converted into hydraulic pressure. The pressure increase ratio is 1:16, and the pneumatic energy-saving hydraulic station 302 is connected with the manual pressure relief valve 312 through an air pipe. The pneumatic hydraulic station 302 is easy to use. This series of pneumatic hydraulic stations are fully equipped and do not require any external motors and oil accumulators, nor do they require power. The pneumatic energy-saving hydraulic station 302 uses compressed air to enter the cylinder body to push the piston to generate pressurization. In this design, the cylinder has a mechanical reversing device. When the intake pressure is set to 0.5Mpa, if the oil pressure is less than 80 kg, the cylinder will automatically reciprocate and increase pressure. When the oil pressure reaches 80 kg, the cylinder automatically stops working to achieve continuous pressurization and continuous pressure maintenance. The ultimate design purpose is to provide a steady stream of hydraulic power for the rail clamp 2;

[0052] A filter 316 is connected between the oil tank 306 and the high-pressure pump 301, a pipeline non-return valve 317 is provided between the high-pressure pump 301 and the superimposed solenoid valve 304, an energy storage device 318 is connected to the high-pressure pump 301, a high-pressure horizontal air storage tank 319 is connected to the pneumatic energy-saving hydraulic station 302, the oil tank 306 is connected to the gear pump 320 through the pipeline non-return valve 317, the gear pump 320 is connected to the motor 321, the motor 321 is used to drive the gear pump 320 to rotate, and an overflow valve 322 is provided at the output end of the gear pump 320, and the overflow valve 322 is connected to the oil tank 3 06 is connected. Due to the internal leakage of the hydraulic system, after the rail clamp arm 205 is opened, the opening degree will gradually decrease. After a period of time, when the opening degree is reduced to a certain extent, the gas switch 315 will cut off the power supply of the motor 321. Once the gear pump 320 motor is powered on, it will quickly replenish oil to the hydraulic push rod 206, so that the hydraulic push rod 206 returns to the fully opened position. At this time, the power supply of the oil pump motor is cut off and the power supply of the time relay is turned on. In this process, because the rail clamp limit switch and the trolley travel relay are interlocked, it will not affect the normal travel of the trolley.

[0053] The output end of the pipeline check valve 317 is connected to the superimposed electromagnetic valve 304, and the output end of the pipeline check valve 317 is connected to the throttle valve 323 on the integrated block, and the throttle valve 323 on the integrated block is connected to the hydraulic push rod 206. If the rail clamp 2 is to clamp the rail, the superimposed electromagnetic valve 304 should be powered off to allow the pressure oil to flow back to the oil tank 306. When the pressure oil flows back, it passes through the throttling effect of the throttle valve 323 on the integrated block. For this reason, the closing time of the rail clamp arm 205 can be adjusted at will by adjusting the oil outlet pressure regulating handle 305.

[0054] Further, such as Figure 6 and Figure 7 As shown, the rail clamp control circuit 4 includes an electric control circuit 401, a rail clamp circuit 402 and a rail clamp interlocking protection circuit 403. When the electric control circuit 401 is cut off, the oil pressure regulating handle 305 should be properly adjusted to adjust the time of the clamping process of the rail clamp 2 to ensure that the main machine can stop before the hydraulic push rod 206 contacts the rail. This is very important because the rail clamp must not be clamped when the iron cow 1 is still walking, otherwise, the rail clamp and the rail will be damaged.

[0055] The electric control circuit 401 includes a contactor KM404 and a thermal relay FR405 electrically connected to the high-pressure pump 301. The thermal relay FR405 is electrically connected to an external power supply through an air switch QF1406 to improve the safety of use.

[0056] The contactor KM404 and the thermal relay FR405 are connected in series with the pressure relay 407. The contactor KM404, the thermal relay FR405 and the pressure relay 407 are connected in series in parallel with the rail clamp control circuit 4. After the pressure relay 407 is closed, the contactor KM404 is in a power-off state, specifically:

[0057] Open the gate and maintain pressure: Make the superimposed solenoid valve 304 energized to maintain pressure, start the motor group, close the air switch QF1406, when the mechanism is fully actuated, the system pressure increases, and when the system pressure reaches the action pressure set by the pressure relay 407, the pressure relay 407 sends a signal to stop the motor, and the superimposed solenoid valve 304 is continuously energized to maintain pressure, and the system is in a pressure-maintaining working state;

[0058] Close the gate: The system loses power, causing the superimposed solenoid valve 304 to be de-energized, the system to release pressure, the cylinder to reset, and the actuator to close.

[0059] Furthermore, if Figure 8 As shown, the control system 5 includes a host computer 501 and an uninterruptible power supply UPS502. The model of the control system 5 is S7-200SMART. The logic of the programmable controller is relatively flexible and can communicate directly with the iron bull 1 to directly detect the working status of the traction system weight frame limit and the rope breaking protection device. The pressure relay 407 establishes a communication connection with the host computer 501. The pressure relay 407 can detect the pressure of the high-pressure horizontal gas storage tank 319 and the hydraulic pressure detection. When the current pressure of the high-pressure horizontal gas storage tank 319 is less than the set pressure, the system will have an alarm function to remind the on-site staff to press the high-pressure horizontal gas storage tank 319 in time until the set pressure is reached. After the hydraulic detection shows that the current pressure is less than the set pressure, the system will give the rail clamp 2 signal is temporarily stopped until the hydraulic pressure is greater than the set pressure, the rail clamp 2 can be restored and is in a standby state at any time. The upper computer 501 is electrically connected with a speed detection module 503, a communication module 504 and a display module 505. The communication module 504 is a LORA wireless transparent transmission module. This system can directly communicate with the logic controller within three kilometers through the LORA wireless transparent transmission module. The communication speed is relatively fast, and the open protocol function is relatively large, which is convenient for flexible deployment on site. The display module 505 can be embedded in the control system 5 for display, and can directly display the current operating speed of this system, the remaining pressure of the high-pressure horizontal gas storage tank 319, the current pressure change of the rail clamp 2, etc., which is convenient for flexible use of this set of equipment;

[0060] The speed detection module 503 is used to detect the speed of the iron ox 1. The movement speed of the iron ox 1 includes:

[0061] The speed of loading a heavy truck is V1, the speed of returning to the nest without loading is V2, and the uncontrolled speed is V3, where V 1< V2< At V3, the superimposed solenoid valve 304 is powered off. Once the uncontrolled speed is greater than the previous two speeds, the control system 5 will sense it immediately and then power off the superimposed solenoid valve 304 on the pneumatic energy-saving hydraulic station 302, and the rail clamp 2 will immediately lock the rail and stop in place.

[0062] Further, if Figure 1 , Figure 3 as well as Fig.10 As shown, a traction clamp 101 is fixedly provided at one end of the iron ox 1, a pulley fixing plate 102 is fixedly provided between the rail clamp 2 at the other end of the iron ox 1, a traction pulley 103 is rotatably provided inside the pulley fixing plate 102, and an iron ox guide wheel 104 corresponding to the rail is provided at the bottom of the iron ox 1, which is convenient for connecting the iron ox 1 and improving the convenience of use. A mounting plate 208 is fixedly provided on one side of the rail clamp 2, and the mounting plate 208 is fixedly connected to the spring base 202. The mounting plate 208 is fixedly connected to the iron ox 1 by bolts, and the rail clamp 2 is fixed to the iron ox 1 as a whole through the mounting plate 208, thereby improving the overall structural strength and stability of the rail clamp 2;

[0063] A side hanging mounting hole 324 is fixedly provided on one side of the oil tank 306, and the side hanging mounting hole 324 is fixed on the iron ox 1 by screws. A protective plate 105 is fixedly provided on the iron ox 1, and the hydraulic system 3, the track clamp control circuit 4 and the control system 5 are arranged inside the protective plate 105. The hydraulic system 3, the track clamp control circuit 4 and the control system 5 are all fixed inside the protective plate 105, which serves the purpose of dust prevention and oxidation prevention and improves the service life of the device.

[0064] like Figure 1-Figure 10 As shown, the principle of the clamp rail-holding hydraulic brake system provided in this embodiment is as follows:

[0065] A safety device is provided to prevent the carriage and the tractor 1 from sliding downward as a whole after the wire rope breaks during normal operation. When the device receives a signal or detects a fault, the rail clamp 2 can automatically clamp the rail and drag the traction device tractor 1 to ensure that the main machine stays in place and avoid accidents. When the main machine is started and used, the rail clamp 2 opens to ensure that the main machine can move freely on the track.

[0066] Through the track clamp control circuit 4, before the iron ox 1 moves, only the power supply of the hydraulic system 3 is turned on to allow the pressure oil to enter the front chamber of the oil cylinder, push the hydraulic push rod 206, and compress the spring 203 to open the track clamp arm 205. After the track clamp arm 205 is safely opened, the walking interlocking circuit of the iron ox 1 is turned on and it starts to move. The hydraulic system 3 ensures that the track clamp arm 205 is in the open position.

[0067] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0068] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a product or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such product or system. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the product or system including the elements.

[0069] The above description shows and describes several preferred embodiments of the present invention, but as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. Changes and variations made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A clamp-type rail-holding hydraulic brake system, comprising an iron ox (1), characterized in that: A rail clamp (2) is fixedly arranged in the middle of both sides of the iron ox (1); a rail clamp guide wheel (201) is arranged at the bottom of the rail clamp (2); a steel rail is connected to the bottom of the rail clamp guide wheel (201); a hydraulic system (3) and a rail clamp control circuit (4) are arranged on the iron ox (1); and both the hydraulic system (3) and the rail clamp control circuit (4) are connected to a control system (5); The rail clamp guide wheel (201) is fixedly connected to the rail clamp (2) via a spring base (202); a spring (203) is fixedly connected to the spring base (202); the upper end of the spring (203) is connected to a rail clamp arm (205) via a connecting rod (204); a jaw is fixedly provided at the bottom of the rail clamp arm (205); the jaw is used to clamp the rail; a hydraulic push rod (206) is connected between the two rail clamp arms (205); The hydraulic system (3) comprises a high-pressure pump (301) and a pneumatic energy-saving hydraulic station (302) connected to the high-pressure pump (301); a plurality of oil outlets (303) and an oil outlet pressure regulating handle (305) are fixedly arranged on the high-pressure pump (301); the high-pressure pump (301) is connected to the pneumatic energy-saving hydraulic station (302); and the oil outlet (303) is connected to the hydraulic push rod (206); The oil outlet (303) is provided with a stacked electromagnetic valve (304), and the stacked electromagnetic valve (304) is electrically connected to the rail clamp control circuit (4).

2. A caliper rail-holding hydraulic brake system according to claim 1, characterized in that: The bottom of the high-pressure pump (301) is connected to an oil tank (306), the high-pressure pump (301) is connected to a pressure gauge (307), and one side of the oil outlet (303) is provided with an oil outlet pressure gauge (308) connected to the oil outlet (303); The upper end of the oil tank (306) is provided with an oil tank cover (309) which is in communication with the oil tank (306). A liquid level meter (310) is fixedly provided on the oil tank (306), and an input end of the liquid level meter (310) is provided inside the oil tank (306).

3. The caliper rail-holding hydraulic brake system according to claim 1, characterized in that: The pneumatic energy-saving hydraulic station (302) is connected to an air intake interface (311), and the air intake interface (311) is connected to a manual pressure relief valve (312) and an air source pressure gauge (313) through an air pipe. An air doublet (314) is connected between the air intake interface (311) and the manual pressure relief valve (312), and a gas switch (315) is connected between the manual pressure relief valve (312) and the high-pressure pump (301). The oil outlet pressure regulating handle (305) is used to control the on and off of the airflow.

4. The caliper rail-holding hydraulic brake system according to claim 2, characterized in that: A filter (316) is connected between the oil tank (306) and the high-pressure pump (301), and a pipeline check valve (317) is provided between the high-pressure pump (301) and the superimposed solenoid valve (304); The high-pressure pump (301) is connected to an energy storage device (318), and the pneumatic energy-saving hydraulic station (302) is connected to a high-pressure horizontal gas storage tank (319).

5. A caliper rail-holding hydraulic brake system according to claim 4, characterized in that: The oil tank (306) is connected to a gear pump (320) via a pipeline one-way valve (317); the gear pump (320) is connected to an electric motor (321); the electric motor (321) is used to drive the gear pump (320) to rotate; An overflow valve (322) is provided at the output end of the gear pump (320), and the overflow valve (322) is connected to the oil tank (306); The output end of the pipeline one-way valve (317) is connected to the superimposed electromagnetic valve (304), and the output end of the pipeline one-way valve (317) is connected to a throttle valve (323) on the integrated block, and the throttle valve (323) on the integrated block is connected to the hydraulic push rod (206).

6. The caliper rail-holding hydraulic brake system according to claim 1, characterized in that: The rail clamp control circuit (4) comprises an electric control circuit (401), a rail clamp circuit (402) and a rail clamp interlocking protection circuit (403); The electric control circuit (401) comprises a contactor KM (404) electrically connected to the high-pressure pump (301) and a thermal relay FR (405), wherein the thermal relay FR (405) is electrically connected to an external power supply via an air switch QF1 (406); The contactor KM (404) and the thermal relay FR (405) are connected in series with a pressure relay (407). The contactor KM (404), the thermal relay FR (405) and the pressure relay (407) are connected in series and connected in parallel with the track clamp control circuit (4). After the pressure relay (407) is closed, the contactor KM (404) is in a power-off state.

7. The caliper rail-holding hydraulic brake system according to claim 6, characterized in that: The control system (5) comprises a host computer (501) and an uninterruptible power supply UPS (502), the pressure relay (407) establishes a communication connection with the host computer (501), the host computer (501) is electrically connected with a speed detection module (503), a communication module (504) and a display module (505), and the communication module (504) is a LORA wireless transparent transmission module; The speed detection module (503) is used to detect the speed of the iron ox (1), and the movement speed of the iron ox (1) includes: The speed of loading a heavy truck is V1, the speed of returning to the nest without loading is V2, and the uncontrolled speed is V3, where V 1< V 2< At V3, the stacked solenoid valve (304) is de-energized.

8. The caliper rail-holding hydraulic brake system according to claim 1, characterized in that: A traction clamp (101) is fixedly provided at one end of the iron ox (1), a pulley fixing plate (102) is fixedly provided between the rail clamps (2) at the other end of the iron ox (1), a traction pulley (103) is rotatably provided inside the pulley fixing plate (102), and an iron ox guide wheel (104) corresponding to the steel rail is provided at the bottom of the iron ox (1).

9. The caliper rail-holding hydraulic brake system according to claim 1, characterized in that: A mounting plate (208) is fixedly provided on one side of the rail clamp (2); the mounting plate (208) is fixedly connected to the spring base (202); and the mounting plate (208) is fixedly connected to the iron cow (1) via bolts.

10. The caliper rail-holding hydraulic brake system according to claim 5, characterized in that: A side hanging mounting hole (324) is fixedly provided on one side of the oil tank (306), and the side hanging mounting hole (324) is fixedly provided on the iron ox (1) by means of screws. A protective plate (105) is fixedly provided on the iron ox (1), and the hydraulic system (3), the rail clamp control circuit (4) and the control system (5) are arranged inside the protective plate (105).

Images