CN216077824U - Energy-saving speed reducer hydraulic control system - Google Patents
Energy-saving speed reducer hydraulic control system Download PDFInfo
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- CN216077824U CN216077824U CN202121480059.7U CN202121480059U CN216077824U CN 216077824 U CN216077824 U CN 216077824U CN 202121480059 U CN202121480059 U CN 202121480059U CN 216077824 U CN216077824 U CN 216077824U
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Abstract
The utility model discloses an energy-saving hydraulic control system of a speed reducer, which comprises an oil tank, wherein a motor is fixedly installed at one end of the oil tank, an oil pump is fixedly connected onto the motor, a filter is arranged on the oil pump, a system energy accumulator and a shock-absorbing energy accumulator are arranged on the oil tank, the oil tank is connected with an oil cylinder through the shock-absorbing energy accumulator, oil outlets of the oil cylinder and the system energy accumulator are communicated with the oil tank, a low-pressure integrated module and a high-pressure integrated module are arranged in the middle of the oil tank, the high-pressure integrated module is connected with the low-pressure integrated module through a high-pressure rubber pipe, an oil circuit on the oil pump is connected with the system energy accumulator through the low-pressure integrated module, the system energy accumulator is connected with the oil cylinder through the high-pressure integrated module, the oil cylinder is connected with the shock-absorbing energy accumulator in parallel, and the oil tank is connected with the oil pump through the shock-absorbing energy accumulator. The utility model discloses energy saving and consumption reduction, braking capability are stable, have solved current reduction gear system power consumption big, reduction gear braking release time long, the problem that the accuse car precision is low, and economical and practical has and uses widely the value.
Description
Technical Field
The utility model belongs to the field of hydraulic reducers, and particularly relates to an energy-saving hydraulic control system of a reducer.
Background
The speed reducer is an important component of a speed reducer control system, and the control system is an important technical means for improving the vehicle control effect. At present, the brake speed reducer for hump automation purpose in China is divided into a gravity type and a non-gravity type. The gravity type speed reducer adopts a pneumatic and hydraulic control system, the braking principle of the gravity type speed reducer is related to the weight of a vehicle, the braking force of the same vehicle in the braking process is not adjustable, and meanwhile, the whole equipment adopts a centralized power station, so that the early construction period is long, the workload is large, and the power consumption and the cost are high; the non-gravity speed reducer controls the speed reducer in a pneumatic grading way, needs a larger cylinder diameter, and has large volume, high manufacturing cost and low vehicle control precision; the existing non-clamp type speed reducer is an electric control hydraulic adjustable speed reducer, a hydraulic system carries out braking force classification, but because the pipe diameter of the electric control hydraulic adjustable speed reducer system is smaller and the oil supply speed is slower, the impact pressure of a control system can exceed the set pressure because a braking execution element is suddenly started or stopped, the braking release time of the speed reducer is longer, and the adverse effect is brought to the vehicle control precision.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an energy-saving hydraulic control system of a speed reducer, which solves the problems of high energy consumption, long braking release time of the speed reducer and low vehicle control precision of the conventional speed reducer system.
The technical scheme adopted by the utility model is as follows: the utility model provides an energy-saving reduction gear hydraulic control system, the oil tank comprises an oil tank, oil tank one end fixed mounting motor, fixed connection oil pump on the motor, set up the filter on the oil pump, arrange the system energy storage ware on the oil tank and inhale the shake energy storage ware, the oil tank is through inhaling the hydro-cylinder of inhaling the shake energy storage ware connection, hydro-cylinder and system energy storage ware oil-out all with oil tank UNICOM, the oil tank middle part sets up low pressure integrated module and high pressure integrated module, high pressure integrated module passes through high-pressure rubber pipe and connects low pressure integrated module, the oil circuit on the oil pump passes through low pressure integrated module connection system energy storage ware, the system energy storage ware passes through high pressure integrated module and connects the hydro-cylinder, the hydro-cylinder is parallelly connected and is inhaled the shake energy storage ware, the oil tank is through inhaling the shake energy storage ware and connect the oil pump.
The present invention is also characterized in that,
the low-pressure integrated module comprises a check valve A and a stop valve A which are sequentially arranged on an oil line pipe, a low-pressure oil pump is connected into a system energy accumulator through the check valve A and the stop valve A on the oil line pipe, the system energy accumulator is connected with a pressure sensor A and a pressure sensor B, and the stop valve B is arranged on the oil line pipe between the pressure sensor A and the system energy accumulator and between the pressure sensor B and the system energy accumulator; and a stop valve C is arranged on an oil path pipe between the system energy accumulator and the oil tank.
The high-pressure integrated module comprises a one-way valve B, a reversing valve A, an overflow valve B, a pressure gauge isolation valve B, a pressure gauge B, a reversing valve B, an electro-hydraulic reversing valve and an overflow valve C; a check valve B, a reversing valve A, an overflow valve A and an overflow valve B are respectively arranged on an oil path between the check valve A and the stop valve A; the system energy accumulator is divided into four paths of connecting oil cylinders, and the first path is connected with the oil cylinders through a one-way valve B and an electro-hydraulic reversing valve; the second path is connected with the oil cylinder through a reversing valve A and an electro-hydraulic reversing valve; the third path is connected with an oil cylinder through an overflow valve A, a reversing valve B and an electro-hydraulic reversing valve; the fourth path is connected with an oil cylinder through an overflow valve B and an electro-hydraulic reversing valve, a braking cavity of the oil cylinder 22 is connected into the oil tank through the reversing valve B which is connected in parallel, and a releasing cavity of the oil cylinder is connected into the oil tank; a shock absorption energy accumulator is arranged between the oil cylinder and the electro-hydraulic reversing valve; and the oil pump is connected into the oil tank through a third overflow valve.
A pressure gauge A is arranged on a pipeline between the stop valve and the system energy accumulator, one end of an oil inlet of the pressure gauge A is provided with a pressure gauge isolation valve A, and the pressure gauge isolation valve A is connected into the oil tank.
And a pressure gauge B is arranged on a pipeline between the electro-hydraulic reversing valve and the reversing valve B, and a pressure gauge isolating valve B is arranged at one end of an oil inlet of the pressure gauge B.
The oil tank is provided with a filter device.
The piston rod is fixedly sleeved in the inner cavity of the oil cylinder.
And an oil pipe joint is welded on the outer wall of the top of the oil cylinder.
The utility model has the beneficial effects that: the utility model discloses an energy-saving hydraulic control system of a speed reducer, and solves the problems of high energy consumption, long brake release time of the speed reducer and low vehicle control precision of the conventional speed reducer system. The device has the advantages of high response speed, high control precision, stable pressure of an effective control system, high requirement on the braking capacity of the heavy vehicle, high efficiency, good safety and long service life.
Drawings
FIG. 1 is a schematic structural diagram of a hydraulic control system of an energy-saving speed reducer according to the utility model;
fig. 2 is a hydraulic principle schematic diagram of the hydraulic control system of the energy-saving speed reducer.
In the figure, 1, an oil tank, 2, an oil filter, 3, an oil pump, 4, a motor, 5, pressure gauge isolation valves A, 6, a pressure gauge A, 7, a check valve A, 8, a stop valve A, 9, a system accumulator, 10, a pressure sensor A, 11, a pressure sensor B, 12, a stop valve B, 13, a stop valve C, 14, a check valve B, 15, a reversing valve A, 16, an overflow valve A, 17, an overflow valve B, 18, a pressure gauge isolation valve B, 19, a pressure gauge B, 20, a reversing valve B, 21, an electro-hydraulic reversing valve, 22 oil cylinders, 23, piston rods, 24, an overflow valve C, 25, a shock absorption accumulator, 26, a filter device, 27, a high-pressure integrated module, 28, an oil pipe joint, 29 and a low-pressure integrated module are arranged.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to a structure of a hydraulic control system of an energy-saving speed reducer, which comprises an oil tank 1, wherein a motor 4 is fixedly arranged at one end of the oil tank 1, the motor 4 provides power, an oil pump 3 is fixedly connected to the motor 4, a filter 2 is arranged on the oil pump 3 and used for filtering hydraulic oil, a system energy accumulator 9 and a shock-absorbing energy accumulator 25 are arranged on the oil tank 1, the oil tank 1 is connected with an oil cylinder 22 through the shock-absorbing energy accumulator 25, oil outlets of the oil cylinder 22 and the system energy accumulator 9 are communicated with the oil tank 1, a low-pressure integrated module 29 and a high-pressure integrated module 27 are arranged in the middle of the oil tank 1, the high-pressure integrated module 27 is connected with the low-pressure integrated module 29 through a high-pressure rubber pipe, an oil path on the oil pump 3 is connected with the system energy accumulator 9 through the low-pressure integrated module 29, the system energy accumulator 9 is connected with the oil cylinder 22 through the high-pressure integrated module 27, the oil cylinder 22 is connected with the energy accumulator 25 in parallel, the oil pump 3, The oil cylinder 22, the high-pressure integrated module 27 and the pressure integrated module 29 are respectively electrically connected with the controller, so that the hydraulic control system of the speed reducer is respectively controlled in a light and heavy oil mode, resources are saved, and the cost is reduced.
The low-pressure integrated module 29 comprises a check valve A7 and a stop valve A8 which are sequentially arranged on an oil line pipe, the low-pressure oil pump 3 is connected into the system energy accumulator 9 through the check valve A7 and the stop valve A8 on the oil line pipe, a pressure gauge A6 is arranged on a pipeline between the stop valve A8 and the system energy accumulator 9, one end of an oil inlet of a pressure gauge A6 is provided with a pressure gauge isolation valve A5, and the pressure gauge isolation valve A5 is connected into the oil tank 1. The system energy accumulator 9 is connected with a pressure sensor A10 and a pressure sensor B11, the pressure sensor A10 is connected with the system energy accumulator 9 in parallel to realize the automatic control of the starting and stopping of the low-pressure oil pump 3, and the pressure sensor B11 is connected with the system energy accumulator 9 in parallel to realize the pressure loss alarm of the automatic control system; a stop valve B12 is arranged on an oil path pipe between the pressure sensor A10 and the pressure sensor B11 and the system accumulator 9; a shut-off valve C13 is provided in the line between the system accumulator 9 and the tank 1.
The high-pressure integrated module 27 comprises a check valve B14, a reversing valve A15, an overflow valve A16, an overflow valve B17, a pressure gauge isolation valve B18, a pressure gauge B19, a reversing valve B20, an electro-hydraulic reversing valve 21 and an overflow valve C24; a reversing valve A15, a check valve B14, a relief valve A16 and a relief valve B17 are respectively arranged on an oil path between the check valve A7 and the stop valve A8. The system energy accumulator 9 is divided into four paths to be connected with the oil cylinder 22, and the first path is connected with the oil cylinder 22 through a check valve B14 and an electro-hydraulic reversing valve 21; the second path is connected with the oil cylinder 22 through the reversing valve A15 and the electro-hydraulic reversing valve 21; the third path is connected with the oil cylinder 22 through an overflow valve A16, a reversing valve B20 and an electro-hydraulic reversing valve 21; the fourth path is connected with the oil cylinder 22 through an overflow valve B17 and an electro-hydraulic reversing valve 21, the braking cavity of the oil cylinder 22 is respectively connected into the oil tank 1 through a reversing valve B20 which is connected in parallel, and the relieving cavity of the oil cylinder 22 is connected into the oil tank 1; the oil pump 3 is connected into the oil tank 1 through a third overflow valve 24, and the overflow valve 24 provides protection for the overload of the oil pump 3; a pressure gauge B19 is arranged on a pipeline between the electro-hydraulic reversing valve 21 and the reversing valve B20, and pressure gauge isolation valves B18 are arranged at one ends of oil inlets of the pressure gauge B19; a shock absorption energy accumulator 25 is arranged between the oil cylinder 22 and the electro-hydraulic directional valve 21. The shock-absorbing energy storage device 25 is used for absorbing all hydraulic oil extruded by the volume change of the oil cylinder 22 caused by the extrusion of the vehicle to the oil cylinder 22, and solves the problem that the vehicle can quickly generate high braking energy no matter where the vehicle is located.
The piston rod 23 is fixedly sleeved in the inner cavity of the oil cylinder 22, the oil pipe joint 28 is welded on the outer wall of the top of the oil cylinder 22, the oil pipe joint 28 is communicated with the oil pump 3 through an oil circuit component, and the oil pipe joint is detachably connected to an external working head.
The utility model discloses an embodiment of a hydraulic control system of an energy-saving speed reducer; the working characteristics of the brake reducer are intermittent working, the total working time is short, in the embodiment, the shock absorption energy storage device 25 is arranged in front of the oil cylinder 22, the oil cylinder 22 is connected with the shock absorption energy storage device 25 in parallel after the pressure outlet of the electro-hydraulic reversing valve 21, and a 2.2KW power oil pump 3 is connected with the system energy storage device 9 to meet the working requirements of the system. In order to realize the purposes of quickly braking and relieving the wheels of the vehicle, improving the vehicle control precision and improving the compiling and resolving efficiency of a hump vehicle, a large-drift-diameter one-way valve B14, an electro-hydraulic reversing valve 21 and a pipeline drift diameter are adopted, so that the full-action speed, the full-braking and the full-relieving of the speed reducer are not more than 0.60S, and the relieving time is not more than 0.20S.
The working process of realizing the functions of primary braking, secondary braking, tertiary braking, relieving, oil supplementing and energy storage of the hydraulic control system of the energy-saving speed reducer is as follows:
when the hydraulic control system receives a primary braking command, the coils 1CT, 2CT and 3CT of the electro-hydraulic directional valve 21, the directional valve A15 and the directional valve B20 are powered off, and the flow and transmission routes of hydraulic oil and pressure of the hydraulic system are as follows: the system energy accumulator 9 → the stop valve A8 → the reversing valve A15 → the one-way valve B14 → the electro-hydraulic reversing valve 21 → the brake cavity of the oil cylinder 22, so as to realize the primary braking function;
when the hydraulic control system receives a secondary braking command, the electricity of the coils 1CT and 3CT of the electro-hydraulic directional valve 21 and the directional valve B20 is cut off, the electricity of the coil 2CT of the directional valve A15 is cut off, and the flow and transmission routes of hydraulic oil and pressure of the hydraulic system are as follows: the system energy accumulator 9 → the stop valve A8 → the one-way valve B14 → the electro-hydraulic directional valve 21 → the brake chamber of the oil cylinder 22, so as to realize the secondary braking;
when the wheels of the vehicle squeeze the brake rails, the piston rod 23 of the oil cylinder 22 tends to retract, at this time, the hydraulic oil and pressure in the brake cavity of the oil cylinder 22 are transmitted to the system accumulator 9, the system converts the mechanical energy of the vehicle into the secondary hydraulic energy of the system to be stored for the next start, and at this time, the flow and transmission routes of the hydraulic oil and pressure of the hydraulic system are as follows: the brake cavity of the oil cylinder 22 → the electro-hydraulic reversing valve 21 → the reversing valve B20 → the overflow valve A16 → the stop valve A8 → the system energy accumulator 9, so as to realize the function of secondary braking energy storage;
when the hydraulic control system receives a three-level braking command, the coil 1CT of the electro-hydraulic directional valve 21 is powered off, the coils 2CT and 3CT of the directional valve A15 and the directional valve B20 are powered on, and the flow and transmission routes of hydraulic oil and pressure of the hydraulic system are as follows: the system energy accumulator 9 → the stop valve A8 → the one-way valve B14 → the electro-hydraulic directional valve 21 → the brake chamber of the oil cylinder 22, and the other path to the shock absorption energy accumulator 25 to realize the three-stage braking function;
when the wheels of the vehicle squeeze the brake rails, the piston rod 23 of the oil cylinder 22 tends to retract, at this time, the hydraulic oil and pressure in the brake cavity of the oil cylinder 22 are transmitted to the system energy accumulator 9, the system converts the mechanical energy of the vehicle into the three-level hydraulic energy of the system to be stored for the next use, and at this time, the flow and transmission routes of the hydraulic oil and pressure of the hydraulic system are as follows: the brake cavity of the oil cylinder 22 → the electro-hydraulic directional valve 21 → the shock absorption energy storage device 25, and the three-stage brake energy storage function is realized.
When the hydraulic control system receives a release command, a coil 1CT of the electro-hydraulic directional valve 21 is electrified, coils 2CT and 3CT of the directional valve A15 and the directional valve B20 are powered off, and the flow and transmission routes of hydraulic oil and pressure of the hydraulic system are as follows: the system energy accumulator 9 → the stop valve A8 → the reversing valve A15 → the one-way valve B14 → the electro-hydraulic reversing valve 21 → the relieving cavity of the oil cylinder 22, and at the moment, the hydraulic oil in the braking cavity of the oil cylinder 22 returns to the oil tank 1 through the electro-hydraulic reversing valve 21, so that the relieving function is realized;
when the pressure of the system accumulator 9 is below a certain value, the hydraulic control system has the function of replenishing oil to the respective accumulator, so that the system pressure is always within a defined pressure range. When the pressure of the system accumulator 9 is lower than the lowest pressure of the pressure sensor a10, the pressure sensor a10 sends a signal to start the motor 4, drive the oil pump 3 to start working, and replenish the system accumulator 9, and at this time, the flow and transmission routes of the hydraulic oil and pressure of the hydraulic system are as follows: filter 2 → oil pump 3 → check valve a7 → stop valve A8 → system accumulator 9; when the pressure of the system accumulator 9 is higher than the highest pressure of the pressure sensor A10, the pressure sensor B11 sends a signal to stop the motor 4 and finish the oil supplement of the low-pressure system.
The utility model relates to a working principle of a hydraulic control system of an energy-saving speed reducer; the oil pump 3 is used for supplying oil and providing power support for the whole system, the system energy accumulator 9 is a pressure storage device for storing the provided energy, the check valve A7 ensures that the oil in the system energy accumulator 9 does not flow back, and the stop valve is a sealing valve which can close the liquid path part when in use and keep the pressure of the rod cavity of the oil cylinder 22 to be constant. The utility model realizes three-level linkage, improves the braking energy, effectively controls the impact pressure generated by the system, enables the system pressure to be in a stable state and realizes the stable output of the braking force; the generation of braking force absorbs the vehicle sliding kinetic energy, and the kinetic energy is converted into mechanical energy for braking by means of an electro-hydraulic integration technology. The high-yield brake can be produced quickly and stably, and the brake effect is repeated; the stepped brake connects the overflow ports of the primary pressure reversing valve A15 and the overflow valve A16 of the secondary pressure with the system energy accumulator 9 through the stop valve A8, all the oil which controls overpressure overflow in a stepped way flows into the volume of the system energy accumulator 9 to be stored, the oil used by the system energy accumulator 9 is supplemented, the starting times of the oil pump 3 are reduced, and the energy-saving effect is achieved.
The energy-saving hydraulic control system of the speed reducer can quickly brake and relieve wheels of a vehicle, energy in the hydraulic system is stored by the system energy accumulator 9 and is released again when the energy-saving hydraulic control system works, so that the defects of the conventional hydraulic speed reducer are overcome, the execution oil cylinder 22 is suddenly started or stopped, and the impact pressure generated by the hydraulic system absorbs and relieves the impact pressure of the system, so that the braking force of the speed reducer on the vehicle is relatively stable; and the performance of the energy accumulator is fully utilized, the vehicle extrudes the brake rail by means of wheels after entering the speed reducer, and the generated hydraulic energy is stored in the energy accumulator and brakes the vehicle. The speed reducer has strong structural universality and safe and reliable work, and meets the purpose of hump automatic speed regulation by combining the speed reducer actuating mechanism with the electric control system. The utility model has the advantages of energy saving, consumption reduction, stable braking capability, popularization and application value, economy and practicality.
Claims (8)
1. The energy-saving hydraulic control system for the speed reducer is characterized by comprising an oil tank (1), wherein a motor (4) is fixedly installed at one end of the oil tank (1), an oil pump (3) is fixedly connected onto the motor (4), a filter (2) is arranged on the oil pump (3), a system energy accumulator (9) and a shock-absorbing energy accumulator (25) are arranged on the oil tank (1), the oil tank (1) is connected with an oil cylinder (22) through the shock-absorbing energy accumulator (25), oil outlets of the oil cylinder (22) and the system energy accumulator (9) are communicated with the oil tank (1), a low-pressure integrated module (29) and a high-pressure integrated module (27) are arranged in the middle of the oil tank (1), the high-pressure integrated module (27) is connected with the low-pressure integrated module (29) through a high-pressure rubber pipe, an oil way on the oil pump (3) is connected with the system energy accumulator (9) through the low-pressure integrated module (29), and the system energy accumulator (9) is connected with the oil cylinder (22) through the high-pressure integrated module (27), the oil cylinder (22) is connected with a shock absorption energy storage device (25) in parallel, and the oil tank (1) is connected with the oil pump (3) through the shock absorption energy storage device (25).
2. The hydraulic control system of the energy-saving speed reducer according to claim 1, wherein the low-pressure integration module (29) comprises a check valve A (7) and a stop valve A (8) which are arranged in sequence on an oil line pipe, the low-pressure oil pump (3) is connected to a system energy accumulator (9) through the check valve A (7) and the stop valve A (8) on the oil line pipe, the system energy accumulator (9) is connected with a pressure sensor A (10) and a pressure sensor B (11), and the stop valve B (12) is arranged on the oil line pipe between the pressure sensor A (10) and the pressure sensor B (11) and the system energy accumulator (9); and a stop valve C (13) is arranged on an oil path pipe between the system energy accumulator (9) and the oil tank (1).
3. The hydraulic control system of the energy-saving speed reducer according to claim 2, wherein the high-pressure integrated module (27) comprises a check valve B (14), a reversing valve A (15), an overflow valve A (16), an overflow valve B (17), a pressure gauge isolation valve B (18), a pressure gauge B (19), a reversing valve B (20), an electro-hydraulic reversing valve (21) and an overflow valve C (24); a check valve B (14), a reversing valve A (15), an overflow valve A (16) and an overflow valve B (17) are respectively arranged on an oil path between the check valve A (7) and the stop valve A (8); the system energy accumulator (9) is divided into four paths of connecting oil cylinders (22), and the first path is connected with the oil cylinders (22) through a one-way valve B (14) and an electro-hydraulic reversing valve (21); the second path is connected with an oil cylinder (22) through a reversing valve A (15) and an electro-hydraulic reversing valve (21); the third path is connected with an oil cylinder (22) through an overflow valve A (16), a reversing valve B (20) and an electro-hydraulic reversing valve (21); the fourth path is connected with an oil cylinder (22) through an overflow valve B (17) and an electro-hydraulic reversing valve (21), a brake cavity of the oil cylinder (22) is connected into the oil tank (1) through the reversing valve B (20) which is connected in parallel, and a release cavity of the oil cylinder (22) is connected into the oil tank (1); a shock absorption energy accumulator (25) is arranged between the oil cylinder (22) and the electro-hydraulic reversing valve (21); the oil pump (3) is connected into the oil tank (1) through a third overflow valve (24).
4. The hydraulic control system of the energy-saving speed reducer according to claim 2, wherein a pressure gauge A (6) is arranged on a pipeline between the stop valve A (8) and the system energy accumulator (9), one end of an oil inlet of the pressure gauge A (6) is provided with a pressure gauge isolation valve A (5), and the pressure gauge isolation valve A (5) is connected to the oil tank (1).
5. The hydraulic control system of the energy-saving speed reducer according to claim 3, wherein a pressure gauge B (19) is arranged on a pipeline between the electro-hydraulic directional valve (21) and the directional valve B (20), and pressure gauge isolation valves B (18) are arranged at one ends of oil inlets of the pressure gauge B (19).
6. An energy-saving retarder hydraulic control system according to claim 1, characterised in that a filter device (26) is provided on the tank (1).
7. The hydraulic control system of an energy-saving speed reducer according to claim 1, wherein a piston rod (23) is fixedly sleeved in an inner cavity of the oil cylinder (22).
8. The hydraulic control system of an energy-saving speed reducer according to claim 1, wherein the top outer wall of the oil cylinder (22) is welded with an oil pipe joint (28).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121480059.7U CN216077824U (en) | 2021-06-30 | 2021-06-30 | Energy-saving speed reducer hydraulic control system |
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| CN202121480059.7U CN216077824U (en) | 2021-06-30 | 2021-06-30 | Energy-saving speed reducer hydraulic control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115143232A (en) * | 2022-04-07 | 2022-10-04 | 金龙 | Vibration energy recovery device and recovery method thereof |
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2021
- 2021-06-30 CN CN202121480059.7U patent/CN216077824U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115143232A (en) * | 2022-04-07 | 2022-10-04 | 金龙 | Vibration energy recovery device and recovery method thereof |
| CN115143232B (en) * | 2022-04-07 | 2023-12-22 | 金龙 | Vibration energy recovery device and recovery method thereof |
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