Energy storage type electric hydraulic switch machine
By introducing an energy storage system into the electro-hydraulic turnout switching device, the problem of automatic completion of turnout switching action under sudden failure was solved, and power guarantee was achieved in the event of power failure or oil pump failure, thereby improving the safety and stability of turnout switching.
Patent Information
- Application Number
- CN202421024489.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-11
AI Technical Summary
The existing electro-hydraulic switch switching device cannot automatically complete the switch switching action in the event of a sudden failure such as power failure or oil pump failure, which affects the safety, reliability and continuity of the switching.
An energy storage type electro-hydraulic switch machine was designed, which includes a hydraulic station system, a turnout switching and adjustment system and an energy storage system. The hydraulic oil is stored in the accumulator to provide backup power for the switch machine cylinder, ensuring that the turnout switching action can still be completed in the event of a sudden failure.
In the event of a sudden malfunction, the energy storage system can continuously provide power, ensuring the safety, reliability, and continuity of turnout switching, improving the stability and accuracy of turnout switching, and meeting the needs of high-speed railway development.
Smart Images
Figure CN222347032U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of railway turnout switch machines, in particular to an energy storage type electric hydraulic switch machine. Background Art
[0002] As railway transportation develops towards heavy load and high speed, the requirements for the stability and reliability of the turnout switching system are getting higher and higher. The existing turnout switching equipment in China mainly includes two types of switch machines: electric and electro-hydraulic. Among them, the electric switch machine mainly has problems such as unstable conversion force output, difficulty in adjustment, large mechanical wear, use of many control equipment, high investment and energy consumption; the existing electric hydraulic switch machine, including motor, hydraulic station, conversion locking mechanism and indication mechanism, has a more and more stable and reliable conversion system, and is more widely used than the electric turnout conversion device.
[0003] However, the current electro-hydraulic turnout switching device does not have the function of continuing to complete the current switching action after a sudden power outage. In the face of sudden failures, it can only be manually switched by human intervention, and the switch switching cannot be guaranteed safely and efficiently. Therefore, a device that can automatically complete the current switching action is designed with better reliability and timeliness. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide an energy storage type electric hydraulic switch machine, which can continue to complete the current switch switching action when a sudden power outage or oil pump system failure occurs by setting an energy storage system, thereby strengthening the integrity of the switch switching action of the existing electro-hydraulic switch machine when facing a sudden failure, and can improve the safety and reliability of the switch switching, the dynamic stability function, meet the needs of high-speed development of railways, and make up for the defects of the existing switch machines.
[0005] In order to achieve the above technical purpose, the utility model provides an energy storage type electric hydraulic switch machine, including a switch machine cylinder and a hydraulic station system connected thereto, wherein the hydraulic station system includes an oil pump system, and the oil pump system provides hydraulic power for the switch machine cylinder. The hydraulic station system also includes a turnout switching adjustment system and an energy storage system; the turnout switching adjustment system includes a three-position four-way electromagnetic reversing valve, a hydraulic lock, and a first one-way throttling speed regulating valve and a second one-way throttling speed regulating valve for adjusting the speed of the telescopic end of the switch machine cylinder. The oil output pipe of the oil pump system is connected to the three-position four-way electromagnetic reversing valve through the three-position four-way electromagnetic reversing valve. The hydraulic oil pipeline of the switch machine cylinder is connected, and the hydraulic lock includes a first hydraulically controlled one-way valve and a second hydraulically controlled one-way valve connected in parallel on the hydraulic oil pipeline of the switch machine cylinder. The first one-way throttling speed regulating valve and the second one-way throttling speed regulating valve are respectively arranged on the rodless chamber oil inlet pipe and the rod chamber oil inlet pipe of the switch machine cylinder; the energy storage system includes a hydraulic accumulator connected to the oil output pipe of the oil pump system, and the hydraulic accumulator is connected to the hydraulic oil pipeline of the switch machine cylinder through a conversion pipeline. A two-position two-way electromagnetic directional valve is arranged on the conversion pipeline, and a one-way valve is arranged on the connecting pipeline between the oil pump system and the hydraulic accumulator.
[0006] The preferred technical solution of the utility model is as follows: the oil pump system includes a hydraulic oil pump connected to the oil tank, an oil pump driving device and an oil control pipeline, the oil pump driving device includes a motor and a coupling; the hydraulic oil pump is connected to the hydraulic oil pipeline of the switch machine cylinder through the oil control pipeline to provide hydraulic power for the switch machine cylinder, the three-position four-way solenoid reversing valve is arranged on the oil outlet pipe of the oil control pipeline, the hydraulic oil enters the rod chamber of the switch machine cylinder through the three-position four-way solenoid reversing valve, the first hydraulically controlled non-return valve and the second non-return throttle speed regulating valve in sequence, or enters the rodless chamber of the switch machine cylinder through the three-position four-way solenoid reversing valve, the second hydraulically controlled non-return valve and the first non-return throttle speed regulating valve in sequence.
[0007] The better technical solution of the utility model is as follows: the energy storage system also includes an energy storage oil pipeline connecting the oil pump system and the hydraulic accumulator, a control ball valve, a pressure gauge and a pressure test and pressure relief circuit are provided on the energy storage oil pipeline, a pressure relief ball valve is provided on the pressure test and pressure relief circuit, the pressure gauge and the pressure test and pressure relief circuit are arranged at a position adjacent to the oil inlet of the hydraulic accumulator, the one-way valve is arranged at the oil inlet end of the energy storage oil pipeline, the control ball valve is located at one end of the one-way valve adjacent to the hydraulic accumulator, and the one-way valve is a one-way valve with a spring; the oil inlet end of the conversion pipeline is connected between the one-way valve and the control ball valve, and the oil outlet end is connected to the pipeline at one end of the hydraulic lock adjacent to the switch cylinder.
[0008] A better technical solution of the utility model: the switch machine cylinder comprises a first cylinder and a second cylinder arranged in parallel, and a first one-way throttling speed regulating valve and a second one-way throttling speed regulating valve are respectively connected to both ends of the first cylinder and the second cylinder.
[0009] A better technical solution of the utility model: the hydraulic station system also includes an oil return tank, and the oil return pipeline of the switch machine cylinder is connected to the oil return tank through the oil return end of the three-position four-way electromagnetic reversing valve.
[0010] The preferred technical solution of the utility model is as follows: an overflow pipe and an oil filter are installed on the oil control pipeline of the oil pump, and an overflow valve is provided on the overflow pipe.
[0011] A more optimal technical solution of the utility model: the energy storage system also includes a pressure relief oil tank, and the oil outlet end of the pressure relief circuit leads to the pressure relief oil tank.
[0012] Beneficial effects of the utility model:
[0013] (1) The utility model is provided with an accumulator system, which stores hydraulic oil when the oil pump is working normally, and provides backup power for the switch cylinder to ensure the switch cylinder's traction switching action. If the oil pump system fails or the system suddenly loses power, the energy storage system can still drive the switch cylinder normally to complete the current traction switching action of the turnout, ensuring the turnout switching requirements, avoiding discontinuity of work caused by loss of switch power due to sudden failures, improving the function of the existing electro-hydraulic switch system, and meeting the needs of high-speed railway development.
[0014] (2) The utility model also realizes the automatic reversing function by using a four-position three-way electromagnetic reversing valve. Compared with the existing two-way pump reversing mode, the utility model has a simple structure, ensures the rapidity of reversing, and improves the stability and accuracy of the reversing of the turnout switching action.
[0015] (3) The utility model also realizes loop locking by arranging a hydraulic lock on the oil return pipe, maintains the action locking of the actuator, satisfies the setting of the open oil circuit, ensures the safety of the hydraulic system during operation, and installs a one-way throttling speed regulating valve at both ends of the two cylinders. The valve has a one-way speed regulating function. When the reverse direction is reached, the oil flows directly out of the one-way valve, and the throttle valve no longer adjusts the oil return speed, which can achieve a fast response during the switching operation, and speed up the switch conversion time while the switch speed can be adjusted.
[0016] The utility model can better cope with sudden failures, ensure the safe and efficient completion of turnout switching, avoid discontinuous work caused by loss of switch machine power due to sudden failures, improve the function of the existing electro-hydraulic switch machine system, meet the needs of high-speed railway development, and improve the stability and accuracy of the switch switching action. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 The utility model is a structural schematic diagram of an energy storage type electro-hydraulic switch machine.
[0018] In the figure: 1—motor, 2—coupling, 3—hydraulic oil pump, 4—oil filter, 5—overflow valve, 6—check valve, 7—three-position four-way solenoid directional valve, 8—two-position two-way solenoid directional valve, 9—first hydraulically controlled check valve, 10—second hydraulically controlled check valve, 11—first one-way throttle speed regulating valve, 12—second one-way throttle speed regulating valve, 13—oil storage tank, 14—conversion pipeline, 15—first oil cylinder, 16—second oil cylinder, 17—hydraulic accumulator, 18—control ball valve, 19—pressure relief ball valve, 20—pressure gauge, 21—pressure relief circuit, 22—pressure relief tank, 23—return oil tank, 24—overflow pipe. DETAILED DESCRIPTION
[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments. Figure 1 The accompanying drawings of the embodiments are drawn in a simplified manner and are only used for the purpose of clearly and concisely illustrating the embodiments of the utility model. The technical solutions shown in the following drawings are specific solutions of the embodiments of the utility model and are not intended to limit the scope of the utility model to be protected. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] In the description of the present utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0021] An energy storage type electric hydraulic switch machine provided in the embodiment, such as Figure 1As shown, it includes a switch machine cylinder and a hydraulic station system connected thereto, the switch machine cylinder includes a first cylinder 15 and a second cylinder 16 arranged in parallel, the hydraulic station system includes an oil pump system, a turnout conversion adjustment system and an energy storage system, the oil pump system provides hydraulic power for the switch machine cylinder, the oil pump system includes a hydraulic oil pump 3 connected to an oil storage tank 13, an oil pump drive device and an oil control pipeline, the oil pump drive device includes a motor 1 and a coupling 2; the hydraulic oil pump 3 is connected to the hydraulic oil pipelines of the two switch machine cylinders through the oil control pipeline to provide hydraulic power for the switch machine cylinder. An overflow pipe 14 and an oil filter 4 are installed on the oil pump oil control pipeline, the overflow pipe 14 is provided with an overflow valve 5, and the oil outlet end of the overflow pipe 14 can also be connected to an oil tank for collecting the hydraulic oil discharged from the overflow pipe 14. An overflow valve 5 is connected in parallel on the oil pump outlet pipeline to limit the oil pressure of the system oil to ensure the safety of the system. At the same time, a filter with an alarm function is connected in series to filter the oil entering the system. When the filter is blocked, the alarm indicator light will light up to indicate that the filter element is blocked.
[0022] An energy storage type electric hydraulic switch machine provided in the embodiment, such as Figure 1 As shown, the switch switching regulation system includes a three-position four-way electromagnetic reversing valve 7, a hydraulic lock, and a first one-way throttling speed regulating valve 11 and a second one-way throttling speed regulating valve 12 for adjusting the speed of the telescopic end of the switch machine cylinder. The oil output pipe of the oil pump system is connected to the hydraulic oil pipeline of the switch machine cylinder through the three-position four-way electromagnetic reversing valve 7. The hydraulic lock includes a first hydraulically controlled one-way valve 9 and a second hydraulically controlled one-way valve 10 connected in parallel on the hydraulic oil pipeline of the switch machine cylinder. The first one-way throttling speed regulating valve 11 and the second one-way throttling speed regulating valve 12 are respectively arranged on the rodless chamber oil inlet pipe and the rod chamber oil inlet pipe of the switch machine cylinder; the first cylinder 15 and the second cylinder 16 are respectively connected to the first one-way throttling speed regulating valve 11 and the second one-way throttling speed regulating valve 12 at both ends. The three-position four-way electromagnetic reversing valve 7 is arranged on the oil outlet pipe of the oil control pipeline, and the hydraulic oil enters the rod chambers of the two switch machine oil cylinders through the three-position four-way electromagnetic reversing valve 7, the first hydraulically controlled one-way valve 9 and the second one-way throttle speed regulating valve 12 in sequence, or enters the rodless chambers of the two switch machine oil cylinders through the three-position four-way electromagnetic reversing valve 7, the second hydraulically controlled one-way valve 10 and the first one-way throttle speed regulating valve 11 in sequence. The hydraulic station system also includes a return oil tank 23, and the return oil pipeline of the switch machine oil cylinder is connected to the return oil tank 23 through the return oil end of the three-position four-way electromagnetic reversing valve 7.
[0023] An energy storage type electric hydraulic switch machine provided in the embodiment, such as Figure 1As shown, the energy storage system includes a hydraulic accumulator 17 connected to the oil output pipe of the oil pump system. The hydraulic accumulator 17 is connected to the hydraulic oil pipeline of the switch machine cylinder through a conversion pipeline 14. A two-position two-way electromagnetic directional valve 8 is provided on the conversion pipeline 14, and a one-way valve 6 is provided on the connecting pipeline between the oil pump system and the hydraulic accumulator 17. The energy storage system also includes an energy storage oil pipeline connecting the oil pump system and the hydraulic accumulator 17, on which a control ball valve 18, a pressure gauge 20 and a pressure test and pressure relief circuit 21 are provided, and a pressure relief ball valve 19 is provided on the pressure test and pressure relief circuit 21. The pressure gauge 20 and the pressure test and pressure relief circuit 21 are arranged at a position adjacent to the oil inlet of the hydraulic accumulator 17, and the one-way valve 6 is arranged at the oil inlet end of the energy storage oil pipeline, and the control ball valve 18 is located at one end of the one-way valve 6 adjacent to the hydraulic accumulator 17, and the one-way valve 6 is a one-way valve with a spring; the oil inlet end of the conversion pipeline 14 is connected between the one-way valve 6 and the control ball valve 18, and the oil outlet end is connected to the pipeline at one end of the hydraulic lock adjacent to the switch machine cylinder. The energy storage system also includes a pressure relief oil tank 22, and the oil outlet end of the pressure relief circuit 21 leads to the pressure relief oil tank 22.
[0024] The working principle of the energy storage type electro-hydraulic switch machine of the utility model is as follows: start the motor 1, the motor 1 rotates to make the hydraulic oil pump 3 suck oil from the oil storage tank 13, and the oil sucked into the hydraulic oil pump 3 flows from the pump outlet through the oil filter 4 and then flows into the turnout switching adjustment system and the energy storage system respectively. When the oil pressure reaches the working set pressure of the switch machine system, the valve core of the overflow valve 5 moves down, and the oil flows back from the overflow valve 5 to the oil tank connected to the overflow pipe, which plays an overload protection role and maintains the system working oil pressure within the set range. When the right position solenoid valve of the three-position four-way electromagnetic reversing valve 7 is energized, the main valve core moves to the left, the right position of the reversing valve is connected, and after the high-pressure oil flows out of the oil filter 4, a part of the high-pressure oil flows through the right position of the reversing valve through the first hydraulically controlled one-way valve 9, and then flows into the rod chambers of the first oil cylinder 15 and the second oil cylinder 16 after adjusting the speed through the two second one-way throttle valves 12 on the oil inlet circuit of the rod chamber of the two oil cylinders. The low-pressure oil in the rodless chamber is regulated by the two first one-way throttle valves 11, flows through the second hydraulic one-way valve 10, and then flows back to the oil tank 23 through the three-position four-way electromagnetic reversing valve 7, thereby realizing the movement of the switch machine in one direction; the other part of the high-pressure oil passes through the one-way valve 6 and the ball valve 18, and then enters the hydraulic accumulator 17 to start energy storage. During energy storage, the two-position two-way electromagnetic directional valve 8 is energized and is in the right position cut-off state. When the three-position four-way electromagnetic reversing valve 7 is energized in the left position, the reversing valve is connected in the left position, and the high-pressure oil flows out of the second hydraulic one-way valve 10, passes through the first one-way throttle valve 11, and then flows into the rodless chamber of the first oil cylinder 15 and the second oil cylinder 16, and the oil cylinder extends; the low-pressure oil flows from the rod chamber of the oil cylinder through the second one-way throttle valve 12, passes through the first hydraulic one-way valve 9 and the reversing valve, and then flows back to the oil tank 23, realizing the movement of the switch machine in another direction. When the system is powered off, the two-position two-way electromagnetic directional valve 8 loses power, the left position is opened, and the high-pressure oil flows from the hydraulic accumulator 17 through the one-way throttle valve into the first cylinder 15 and the second cylinder 16 to complete the current action and ensure the energy supply after the switch machine is powered off; the energy storage system is provided with a pressure test and a pressure relief circuit. After the hydraulic oil in the hydraulic accumulator is full, it can be discharged into the pressure relief tank 22 through the pressure relief circuit 21.
[0025] The above description is only a preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Any modifications, equivalent substitutions and improvements made within the scope and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. An energy storage type electric hydraulic switch machine, comprising a switch machine cylinder and a hydraulic station system connected thereto, wherein the hydraulic station system comprises an oil pump system, and the oil pump system provides hydraulic power for the switch machine cylinder, and is characterized in that: The hydraulic station system also includes a switch switching adjustment system and an energy storage system; the switch switching adjustment system includes a three-position four-way electromagnetic reversing valve (7), a hydraulic lock, and a first one-way throttling speed regulating valve (11) and a second one-way throttling speed regulating valve (12) for adjusting the speed of the telescopic end of the switch machine oil cylinder; the oil output pipe of the oil pump system is connected to the hydraulic oil pipeline of the switch machine oil cylinder through the three-position four-way electromagnetic reversing valve (7); the hydraulic lock includes a first hydraulically controlled one-way valve (9) and a second hydraulically controlled one-way valve (12) connected in parallel on the hydraulic oil pipeline of the switch machine oil cylinder. 0), the first one-way throttling speed regulating valve (11) and the second one-way throttling speed regulating valve (12) are respectively arranged on the rodless chamber oil inlet pipe and the rod chamber oil inlet pipe of the switch machine oil cylinder; the energy storage system comprises a hydraulic accumulator (17) connected to the oil output pipe of the oil pump system, the hydraulic accumulator (17) is connected to the hydraulic oil pipeline of the switch machine oil cylinder through a conversion pipeline (14), a two-position two-way electromagnetic directional valve (8) is arranged on the conversion pipeline (14), and a one-way valve (6) is arranged on the connecting pipeline between the oil pump system and the hydraulic accumulator (17).
2. The energy storage type electric hydraulic switch machine according to claim 1, characterized in that: The oil pump system comprises a hydraulic oil pump (3) connected to an oil storage tank (13), an oil pump driving device and an oil control pipeline, wherein the oil pump driving device comprises a motor (1) and a coupling (2); the hydraulic oil pump (3) is connected to the hydraulic oil pipeline of the switch machine cylinder through the oil control pipeline to provide hydraulic power for the switch machine cylinder; the three-position four-way electromagnetic reversing valve (7) is arranged on the oil outlet pipe of the oil control pipeline, and the hydraulic oil enters the rod chamber of the switch machine cylinder through the three-position four-way electromagnetic reversing valve (7), the first hydraulically controlled one-way valve (9) and the second one-way throttle speed regulating valve (12) in sequence, or enters the rodless chamber of the switch machine cylinder through the three-position four-way electromagnetic reversing valve (7), the second hydraulically controlled one-way valve (10) and the first one-way throttle speed regulating valve (11) in sequence.
3. An energy storage type electric hydraulic switch machine according to claim 1 or 2, characterized in that: The energy storage system further comprises an energy storage oil pipeline connecting the oil pump system and the hydraulic accumulator (17); a control ball valve (18), a pressure gauge (20) and a pressure test and pressure relief circuit (21) are arranged on the energy storage oil pipeline; a pressure relief ball valve (19) is arranged on the pressure test and pressure relief circuit (21); the pressure gauge (20) and the pressure test and pressure relief circuit (21) are arranged at positions adjacent to the oil inlet of the hydraulic accumulator (17); the one-way valve (6) is arranged at the oil inlet end of the energy storage oil pipeline; the control ball valve (18) is located at one end of the one-way valve (6) adjacent to the hydraulic accumulator (17); and the one-way valve (6) is a one-way valve with a spring; the oil inlet end of the conversion pipeline (14) is connected between the one-way valve (6) and the control ball valve (18); and the oil outlet end is connected to the pipeline at one end of the hydraulic lock adjacent to the switch machine oil cylinder.
4. The energy storage type electric hydraulic switch machine according to claim 1 or 2, characterized in that: The switch machine oil cylinder comprises a first oil cylinder (15) and a second oil cylinder (16) which are arranged in parallel, and a first one-way throttling speed regulating valve (11) and a second one-way throttling speed regulating valve (12) are respectively connected to the two ends of the first oil cylinder (15) and the second oil cylinder (16).
5. The energy storage type electric hydraulic switch machine according to claim 1 or 2, characterized in that: The hydraulic station system also includes an oil return tank (23), and the oil return pipeline of the switch machine oil cylinder is connected to the oil return tank (23) via the oil return end of the three-position four-way electromagnetic reversing valve (7).
6. The energy storage type electric hydraulic switch machine according to claim 2, characterized in that: An overflow pipe (24) and an oil filter (4) are installed on the oil control pipeline of the oil pump, and an overflow valve (5) is provided on the overflow pipe (24).
7. The energy storage type electric hydraulic switch machine according to claim 3, characterized in that: The energy storage system further comprises a pressure relief oil tank (22), and the oil outlet end of the pressure relief circuit (21) leads to the pressure relief oil tank (22).