Hydraulic power source device for intelligent rapid rail grinding wagon

Abstract

The utility model discloses a hydraulic power source device for an intelligent rapid steel rail grinding wagon, which belongs to the technical field of steel rail grinding and comprises a main oil way, an emergency oil way and an oil supplementing oil way which are connected with an oil tank. A variable displacement piston pump, a one-way valve and an energy accumulator are sequentially arranged on the main oil way; a manual pump is arranged on the emergency oil way; and a second oil return filter and an oil return back pressure valve are arranged on the oil supplementing path. According to the intelligent rapid steel rail grinding wagon, the grinding function of the intelligent rapid steel rail grinding wagon is achieved, and the safety and reliability of grinding operation are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail grinding, and specifically relates to a hydraulic power source device for an intelligent rapid rail grinding vehicle. Background Technique

[0002] The intelligent rapid rail grinding vehicle is an important affiliated equipment for railway track maintenance, overhaul and maintenance. Rail grinding is divided into two categories: restorative grinding and preventive grinding. Restorative grinding work is mainly carried out when the surface diseases of the rail reach a certain degree and affect the running safety of trains; preventive grinding is to grind off the crack initiation area before the rail head crack begins to expand to prevent the generation and development of contact fatigue type grinding. Therefore, it can effectively eliminate or control the surface defects of the rail, ensure the surface state and good shape of the rail, and can maximize the service life of the rail. The rapid grinding technology is a technology suitable for preventive rail grinding developed on the basis of summarizing existing grinding experience and changing the concept of rail maintenance and repair. It has the characteristics of high grinding efficiency and less occupation of transportation resources, and has functions such as preventive grinding, noise reduction grinding, adhesion layer removal and decarburized layer removal for new rails.

[0003] As an important part of the intelligent rapid rail grinding vehicle, the performance of the hydraulic control system directly affects the realization of the grinding function and the safety and reliability of the grinding operation; among them, the power source device of the hydraulic control system is particularly important. Content of the Utility Model

[0004] The purpose of the utility model is to provide a hydraulic power source device for an intelligent rapid rail grinding vehicle, which not only ensures the realization of the grinding function in the intelligent rapid rail grinding vehicle, but also ensures the safety and reliability of its grinding operation.

[0005] To achieve the purpose of the utility model, the technical solution adopted is: a hydraulic power source device for an intelligent rapid rail grinding vehicle, including a main oil circuit, an emergency oil circuit and a supplementary oil circuit connected to an oil tank;

[0006] A variable piston pump, a one-way valve and an accumulator are sequentially arranged on the main oil circuit;

[0007] A manual pump is arranged on the emergency oil circuit;

[0008] A second oil return filter and an oil return back pressure valve are arranged on the supplementary oil circuit.

[0009] Furthermore, there are two sets of variable piston pumps, and the two sets of variable piston pumps are connected in parallel on the main oil circuit. The inlet ends of the two sets of variable piston pumps are both connected with a butterfly valve and a shock absorber hose, and the shock absorber hose is located between the butterfly valve and the inlet end of the variable piston pump.

[0010] Further, the variable plunger pump is a constant-pressure variable plunger pump with a remote control pressure controller, and the oil ports X of the remote control pressure controllers on the two sets of variable plunger pumps are jointly connected in parallel with a proportional relief valve through an external oil pipe. The proportional relief valve is linked with the constant-pressure variable plunger pump for control, and stepless variable control of the constant-pressure variable plunger pump at different pressure levels can be achieved by remotely controlling the proportional relief valve.

[0011] Further, a second oil suction filter is also installed at the inlet end of the main oil circuit.

[0012] Further, a high-pressure filter, a pressure sensor and a pressure gauge are also installed on the main oil circuit, and the high-pressure filter, the pressure sensor and the pressure gauge are all located between the check valve and the accumulator.

[0013] Further, a stop valve is also installed at the inlet end of the emergency oil circuit, and a safety valve connected to the fuel tank is also installed at the outlet end of the manual pump.

[0014] Further, an oil drain ball valve, a liquid level and liquid temperature gauge and a sampling ball valve are also provided on the fuel tank.

[0015] Further, a circulating cooling oil circuit is also provided on the fuel tank, and a fixed-displacement pump and a cooler are successively installed on the circulating cooling oil circuit.

[0016] Further, a first oil suction filter is installed at the inlet end of the circulating cooling oil circuit, and a first oil return filter is also installed at the outlet end of the circulating cooling oil circuit.

[0017] Further, an air filter, an oil electric heater, a temperature sensor and a liquid level switch are also installed on the fuel tank.

[0018] The beneficial effects of the utility model are as follows:

[0019] 1. By providing an emergency oil circuit (c→Ps), it is ensured that after the control program fails, or the main oil circuit fails, or the power supply fails, or the emergency power supply and other all fail, the grinding vehicle can also be lifted off the track by the oil supply of the manual pump on the emergency oil circuit, so that the grinding vehicle can drive out of the operation area, avoiding damage to the track and affecting the normal operation of the track line.

[0020] 2. By arranging two sets of variable plunger pumps (T→S1→B1→Pn0, T→S2→B2→Pn0) in parallel on the main oil circuit, the one-open-one-standby setting ensures the continuity of the hydraulic control system.

[0021] 3. By using a constant-pressure variable plunger pump with a remote control pressure controller, and controlling the proportional relief valve through a program, stepless pressure regulation, stepless variable control and constant-pressure control of the hydraulic pump are realized, reducing system heating, improving system performance, and saving energy and reducing consumption.

[0022] 4. By separately setting up a circulating cooling oil circuit (a→b) on the fuel tank, it ensures that the hydraulic oil of the hydraulic control system works within an appropriate operating temperature range. At the same time, it can also filter out oil impurities, improve the cleanliness of the oil, extend the service life of each hydraulic component, reduce the failure rate, and thus ensure the stability and reliability of the operation of the hydraulic control system. Description of the Drawings

[0023] The drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, are used to explain the principles of the present invention. These drawings are included to provide a further understanding of the present invention, and the drawings are included in this specification and form a part of this specification.

[0024] Figure 1 It is a system diagram of the hydraulic power source device for an intelligent rapid rail grinding vehicle provided by the present invention.

[0025] Reference numerals and corresponding component names in the drawings:

[0026] 1. Fuel tank, 2. Drain ball valve, 3. Liquid level and temperature gauge, 4. First return oil filter, 5. Return oil back pressure valve, 6. Air filter, 7. Oil electric heater, 8. First suction oil filter, 9. First motor, 10. Fixed displacement pump, 11. Cooler, 12. Temperature sensor, 13. Liquid level switch, 14. Stop valve, 15. Manual pump, 16. Check valve, 17. Safety valve, 18. Second suction oil filter, 19. Sampling ball valve, 20. Butterfly valve, 21. Shock absorber hose, 22. Shock pad, 23. Second motor, 24. Variable plunger pump, 25. Proportional relief valve, 26. High pressure filter, 27. Pressure sensor, 28. Pressure gauge, 29. Accumulator, 30. Second return oil filter. Detailed Embodiments

[0027] The present invention will be further described in detail below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the relevant content and do not limit the present invention. Additionally, it should be noted that for the sake of description, only the parts related to the present invention are shown in the drawings.

[0028] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and embodiments.

[0029] As Figure 1As shown in the figure, a hydraulic power source device for an intelligent rapid rail grinding vehicle provided by the present utility model includes an oil tank 1, a main oil circuit, an emergency oil circuit and a supplementary oil circuit connected to the oil tank 1. The path of the main oil circuit is T → S1 → B1 → Pn0 and T → S2 → B2 → Pn0. The path of the emergency oil circuit is c → Ps. The path of the supplementary oil circuit is Tn0 → d;

[0030] A variable displacement piston pump 24, a one-way valve 16 and an accumulator 29 are successively arranged on the main oil circuit. Among them, the variable displacement piston pump 24 is driven by a second motor 23. In order to reduce vibration and noise, a shock pad 22 is also installed on the base of the second motor 23. The variable displacement piston pump 24 provides oil with a constant pressure and real-time matching flow rate for the hydraulic system to ensure the normal operation of each mechanism in the grinding vehicle. The one-way valve 16 is used to prevent the oil from flowing back to the variable displacement piston pump 24 and damaging the variable displacement piston pump 24. The accumulator 29 is used to absorb the pressure pulsation of the main oil circuit, playing a role in reducing noise and improving the stability of the system;

[0031] A manual pump 15 is arranged on the emergency oil circuit. The manual pump 15 serves as an emergency oil source for the system, providing power in an emergency state to ensure that the grinding vehicle can be lifted and separated from the track to ensure operation safety;

[0032] A second return oil filter 30 and a return oil backpressure valve 5 are arranged on the supplementary oil circuit. Among them, the second return oil filter 30 is used for filtering the system oil. The second return oil filter 30 is equipped with a signal transmitter. When the filter element of the second return oil filter 30 is blocked, the signal transmitter sends a signal to alarm, indicating that the filter element of the second return oil filter 30 is dirty at this time and needs to be cleaned or replaced. The presence of the return oil backpressure valve 5 is used to ensure that the supplementary oil circuit can supply oil normally.

[0033] As a further improvement of this embodiment, there are two sets of variable displacement piston pumps 24. The two sets of variable displacement piston pumps 24 are commonly connected in parallel at the inlet end of the main oil circuit. At this time, two main oil circuits are formed. The path of one main oil circuit is T → S1 → B1 → Pn0, and the path of the other main oil circuit is T → S2 → B2 → Pn0. In actual use, only one set of variable displacement piston pumps 24 needs to work. The second motors 23 on the two sets of variable displacement piston pumps 24 are configured the same, one is in operation and the other is in standby, and the two are interlocked and cannot be started simultaneously. The setting of one in operation and the other in standby for the second motors 23 on the two sets of variable displacement piston pumps 24 ensures the continuity of the operation of the hydraulic control system and prevents the situation that when there is only one second motor 23 on one set of variable displacement piston pumps 24 and the second motor 23 on the variable displacement piston pump 24 fails, the system stops running and the equipment breaks down. Butterfly valves 20 and shock-absorbing hoses 21 are connected to the inlet ends of the two sets of variable displacement piston pumps 24. The shock-absorbing hose 21 is located between the butterfly valve 20 and the inlet end of the variable displacement piston pump 24.

[0034] The butterfly valve 20 is equipped with a travel switch. The butterfly valve 20 is used to cut off during the maintenance of two main oil circuits. When the main oil circuit is cut off, the second motor 23 used to drive the variable piston pump 24 cannot start working. Only when the butterfly valve 20 is in the open state and the transmitter on the butterfly valve 20 sends a signal to the electrical controller, can the second motor 23 start working. This can effectively prevent the variable piston pump 24 from sucking air and dry burning due to misoperation, and protect the safety of the variable piston pump 24. The shock absorber hose 21 is used for the connection between the variable piston pump 24 and the main oil circuit, playing a role in reducing vibration and noise.

[0035] As a further improvement of this embodiment, the variable piston pump 24 is a constant pressure variable piston pump 24 with a remote control pressure controller. The oil ports X of the remote control pressure controllers on the two sets of variable piston pumps 24 are commonly connected in parallel with a proportional relief valve 25 through an external oil pipe. The proportional relief valve 25 is responsible for the remote pressure control of the variable piston pump 24, realizing stepless pressure regulation and stepless variable of the variable piston pump 24.

[0036] As a further improvement of this embodiment, a second suction filter 18 is also installed at the inlet end of the main oil circuit. Through the filtration of the second suction filter 18, it is ensured that no foreign matter enters the variable piston pump 24 during the operation of the system, and the service life of the variable piston pump 24 is extended.

[0037] As a further improvement of this embodiment, a high-pressure filter 26, a pressure sensor 27 and a pressure gauge 28 are also installed on the main oil circuit, and the high-pressure filter 26, the pressure sensor 27 and the pressure gauge 28 are all located between the check valve 16 and the accumulator 29. Among them, the high-pressure filter 26 is used to filter the oil passing through the main oil circuit to ensure the cleanliness of the oil entering each control valve group and each actuator, and improve the operation stability and reliability of the system. The pressure sensor 27 is used to detect the outlet pressure of the variable piston pump 24 in real time. The pressure gauge 28 is used to directly observe the outlet pressure of the variable piston pump 24.

[0038] As a further improvement of this embodiment, a stop valve 14 is also installed at the inlet end of the emergency oil circuit. The stop valve 14 is used to cut off the oil circuit during the maintenance of the emergency oil circuit. A safety valve 17 connected to the fuel tank 1 is also installed at the outlet end of the manual pump 15. The safety valve 17 is used to prevent the emergency oil circuit from being overloaded and protect the safety of the system.

[0039] As a further improvement of this embodiment, a drain ball valve 2, a liquid level and temperature gauge 3 and a sampling ball valve 19 are further provided on the fuel tank 1; wherein, the drain ball valve 2 is used to drain the oil in the fuel tank 1 when the system oil needs to be replaced or the hydraulic fuel tank 1 needs to be cleaned; the liquid level and temperature gauge 3 is used to directly observe the oil level and temperature of the oil in the fuel tank 1, so as to avoid too high or too low oil level during oil filling, and the liquid level and temperature gauge 3 can be replaced without draining the oil in the fuel tank 1 when it is damaged; the sampling ball valve 19 is used for sampling and detecting the oil in the fuel tank 1.

[0040] As a further improvement of this embodiment, a circulating cooling oil circuit is further provided on the fuel tank 1, that is, the inlet end and the outlet end of the circulating cooling oil circuit are both communicated with the inside of the fuel tank 1, and the path of the circulating cooling oil circuit is a→b; a metering pump 10 and a cooler 11 are sequentially installed on the circulating cooling oil circuit; wherein, the metering pump 10 is powered by a first motor 9 for its operation, and the metering pump 10 is responsible for pumping up the oil from the fuel tank 1 for circulating cooling and filtering; the cooler 11 dissipates heat from the oil passing through the circulating cooling oil circuit.

[0041] A first suction filter 8 is installed at the inlet end of the circulating cooling oil circuit. The first suction filter 8 ensures that no foreign matter enters the metering pump 10 during the operation of the circulating cooling oil circuit, and prolongs the service life of the metering pump 10; a first return filter 4 is also installed at the outlet end of the circulating cooling oil circuit. The first return filter 4 is used for filtering the oil passing through the circulating cooling oil circuit, and it is equipped with a transmitter; when the filter element on the first return filter 4 is blocked, the transmitter sends a signal to alarm, indicating that the filter element of the first return filter 4 is dirty at this time and needs to be cleaned or replaced.

[0042] As a further improvement of this embodiment, an air filter 6, an oil electric heater 7, a temperature sensor 12 and a liquid level switch 13 are further installed on the fuel tank 1; wherein, the air filter 6 can ensure the pressure balance in the fuel tank 1 during the operation of the hydraulic system, and the air filter 6 can also be used as the filling port of the fuel tank 1 to prevent foreign matters such as particulate matters from entering the fuel tank 1 during refueling and ensure the cleanliness of the oil; the oil electric heater 7 is used for heating the oil to ensure that the system can work normally in a low-temperature environment. The temperature sensor 12 monitors the temperature of the oil in the fuel tank 1 in real time and controls the start and stop of the first motor 9 and the cooler 11; specifically, when the temperature sensor 12 detects that the temperature of the oil in the fuel tank 1 is higher than the set value, the first motor 9 and the cooler 11 start to work, pumping up the oil in the fuel tank 1 for heat dissipation and filtering; when the temperature sensor 12 detects that the temperature of the oil in the fuel tank 1 cools down to the set temperature, the first motor 9 and the cooler 11 stop working. The liquid level switch 13 is used to detect the liquid level of the oil in the fuel tank 1. When the liquid level of the oil in the fuel tank 1 is too high or too low, the liquid level switch 13 sends a signal to alarm. At this time, the second motor 23 cannot start working, thus protecting the safe operation of the system.

[0043] In this power source device, by setting up an independent circulating cooling oil circuit, it is ensured that the oil in the hydraulic system works within a suitable operating temperature range. At the same time, through the first oil suction filter 8, oil impurities can be filtered, the cleanliness of the oil is improved, the service life of each hydraulic component is prolonged, and the failure rate is reduced, thereby ensuring the stability and reliability of the hydraulic control system.

[0044] In this power source device, by setting up an oil electric heater 7 and a temperature sensor 12 on the fuel tank 1, when the ambient temperature of the system is relatively low and the temperature sensor 12 monitors a low temperature, neither the variable plunger pump 24 nor the fixed displacement pump 10 can be started, preventing the variable plunger pump 24 and the fixed displacement pump 10 from sucking air and burning the pumps. At this time, the oil electric heater 7 first electrically heats the oil in the fuel tank 1. When the temperature of the oil in the fuel tank 1 is heated to the set temperature, the temperature sensor 12 sends a signal, and the variable plunger pump 24 and the fixed displacement pump 10 can start working. When the oil electric heater 7 continues to heat to the set working temperature, the oil electric heater 7 cuts off the power supply and stops heating.

[0045] In this power source device, the setting of the liquid level switch 13 ensures that the hydraulic system will not malfunction due to low oil level. Specifically, when the liquid level in the fuel tank 1 is too low, the liquid level switch 13 sends a signal for alarm, and the second motor 23 and the variable plunger pump 24 cannot start working, preventing system failures caused by the oil pump sucking air.

[0046] In this power source device, by setting up an emergency oil circuit and installing a stop valve 14, a manual pump 15, a check valve 16, and a safety valve 17 on the emergency oil circuit, after the control program fails, or the main oil circuit fails, or the power supply fails, or the emergency power supply and others all fail, the grinding vehicle can still be lifted off the track by supplying oil through the manual pump 15 in the emergency oil circuit, and the grinding vehicle can drive away from the operation area, avoiding damage to the track and avoiding being stranded and affecting the normal operation of the track line.

[0047] In the description of this specification, the description with reference to terms such as "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments / ways or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments / ways or examples described in this specification and the features of different embodiments / ways or examples.

[0048] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0049] Those skilled in the art should understand that the above embodiments are merely for clearly illustrating the present utility model and are not intended to limit the scope of the present utility model. For those skilled in the art, other changes or modifications can be made based on the above disclosure, and these changes or modifications are still within the scope of the present utility model.

Claims

1. A hydraulic power source device for an intelligent rapid rail grinding vehicle, characterized in that: It includes a main oil circuit, an emergency oil circuit and an oil replenishment oil circuit connected to the oil tank (1); The main oil circuit is provided with a variable piston pump (24), a one-way valve (16) and an accumulator (29) in sequence; The emergency oil circuit is provided with a manual pump (15); The oil replenishment oil circuit is provided with a second oil return filter (30) and an oil return back pressure valve (5).

2. The hydraulic power source device for intelligent rapid rail grinding vehicle according to claim 1, characterized in that: The variable piston pumps (24) are in two sets, and the two sets of variable piston pumps (24) are connected in parallel to the main oil circuit. The inlet ends of the two sets of variable piston pumps (24) are both connected to a butterfly valve (20) and a shock absorber throat (21), and the shock absorber throat (21) is located between the butterfly valve (20) and the inlet end of the variable piston pump (24).

3. The hydraulic power source device for intelligent rapid rail grinding vehicle according to claim 2, characterized in that: The variable piston pump (24) is a constant pressure variable piston pump (24) with a remote control pressure controller, and the oil ports X of the remote control pressure controllers on the two sets of variable piston pumps (24) are connected in parallel with a proportional relief valve (25) through an external oil pipe, and the proportional relief valve (25) is controlled in linkage with the constant pressure variable piston pump (24).

4. The hydraulic power source device for intelligent rapid rail grinding vehicle according to claim 1, characterized in that: A second oil suction filter (18) is also installed at the inlet end of the main oil circuit.

5. The hydraulic power source device for intelligent rapid rail grinding vehicle according to claim 1, characterized in that: A high-pressure filter (26), a pressure sensor (27) and a pressure gauge (28) are also installed on the main oil circuit, and the high-pressure filter (26), the pressure sensor (27) and the pressure gauge (28) are all located between the one-way valve (16) and the accumulator (29).

6. The hydraulic power source device for intelligent rapid rail grinding vehicle according to claim 1, characterized in that: The inlet end of the emergency oil circuit is also equipped with a stop valve (14), and the outlet end of the manual pump (15) is also equipped with a safety valve (17) connected to the oil tank (1).

7. The hydraulic power source device for an intelligent rapid rail grinding vehicle according to any one of claims 1 to 6, characterized in that: The oil tank (1) is also provided with an oil drain ball valve (2), a liquid level and liquid temperature gauge (3) and a sampling ball valve (19).

8. The hydraulic power source device for an intelligent rapid rail grinding vehicle according to any one of claims 1 to 6, characterized in that: The oil tank (1) is also provided with a circulating cooling oil circuit, on which a metering pump (10) and a cooler (11) are sequentially installed.

9. The hydraulic power source device for intelligent rapid rail grinding vehicle according to claim 8, characterized in that: A first oil suction filter (8) is installed at the inlet end of the circulating cooling oil circuit, and a first oil return filter (4) is also installed at the outlet end of the circulating cooling oil circuit.

10. The hydraulic power source device for an intelligent rapid rail grinding vehicle according to any one of claims 1 to 6, characterized in that: The oil tank (1) is also equipped with an air filter (6), an oil electric heater (7), a temperature sensor (12) and a liquid level switch (13).

Images