CN217421448U - Hydraulic vibration energy recovery device and automobile - Google Patents
Hydraulic vibration energy recovery device and automobile Download PDFInfo
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- CN217421448U CN217421448U CN202221513945.XU CN202221513945U CN217421448U CN 217421448 U CN217421448 U CN 217421448U CN 202221513945 U CN202221513945 U CN 202221513945U CN 217421448 U CN217421448 U CN 217421448U
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 51
- 238000004146 energy storage Methods 0.000 claims abstract description 29
- 230000001105 regulatory effect Effects 0.000 claims description 61
- 230000005540 biological transmission Effects 0.000 claims description 19
- 238000005381 potential energy Methods 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 13
- 230000035939 shock Effects 0.000 claims description 13
- 230000007423 decrease Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 13
- 239000010720 hydraulic oil Substances 0.000 description 11
- 238000013017 mechanical damping Methods 0.000 description 9
- 230000009471 action Effects 0.000 description 5
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Abstract
The utility model discloses a hydraulic pressure vibrations energy recuperation device and car, hydraulic pressure vibrations energy recuperation device include power conversion mechanism, energy storage speed adjusting mechanism and electric energy conversion mechanism, energy storage speed adjusting mechanism includes clockwork spring and speed adjusting device, power conversion mechanism connects the clockwork spring, the reciprocating linear motion that power conversion mechanism and clockwork spring lead to shaking converts rotary motion, the clockwork spring is connected speed adjusting device, speed adjusting device connects electric energy conversion mechanism, the clockwork spring is used for interim energy storage, drives during the release speed adjusting device. The utility model discloses a whole car vibrations energy recovery and stable release.
Description
Technical Field
The utility model relates to a new energy automobile technical field especially relates to a hydraulic pressure vibrations energy recuperation device and car.
Background
In the daily use process of a new energy automobile, once the new energy automobile encounters an uneven pothole road section, the automobile is subjected to upward thrust, and part of driving energy of the whole automobile is usually lost in the vibration and bumping process of the whole automobile, and the part of energy is usually ignored by markets and users; in order to buffer the thrust force applied to the vehicle and improve the comfort of the vehicle in advancing, shock absorbers are also installed, and can absorb the thrust force applied to the vehicle so as to form shock absorption energy, but the shock absorption energy is directly released, so that the waste of vibration energy is caused; and after the vibration energy is recovered, how to stably release the recovered vibration energy also has difficulty.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
Based on the above problem, the utility model provides a hydraulic pressure vibrations energy recuperation device and car solves whole car vibrations, the problem of the in-process loss energy of jolting, retrieves whole car vibrations energy to the mode that utilizes a plurality of grades of pagoda shape speed governing gear group cooperation chain drive wheel has realized stable release of clockwork spring energy, has realized the stable rotation of generator rotor.
(II) technical scheme
Based on foretell technical problem, the utility model provides a hydraulic pressure vibrations energy recuperation device, including power conversion mechanism, energy storage speed adjusting mechanism and electric energy conversion mechanism, energy storage speed adjusting mechanism includes clockwork spring and speed adjusting device, power conversion mechanism connects the clockwork spring, reciprocating linear motion that power conversion mechanism and clockwork spring lead to vibrations is rotary motion, the clockwork spring is connected speed adjusting device, speed adjusting device connects electric energy conversion mechanism, the clockwork spring is used for interim energy storage, drives during the release speed adjusting device.
Furthermore, the speed regulating device comprises a speed regulating gear set, a transmission chain and a large-diameter driven gear, the spring is connected with a gear shaft of the speed regulating gear set, the speed regulating gear of the speed regulating gear set is connected with the large-diameter driven gear through the transmission chain, and the large-diameter driven gear is connected with the electric energy conversion mechanism.
Furthermore, the power conversion mechanism comprises a vibration hydraulic pump mechanism, a high-pressure liquid storage pipeline and a mechanical energy conversion mechanism, the vibration hydraulic pump mechanism is connected with the high-pressure liquid storage pipeline through a hydraulic pipeline, the high-pressure liquid storage pipeline is connected with the mechanical energy conversion mechanism through a hydraulic pipeline, the mechanical energy conversion mechanism is connected with a clockwork spring in a mechanical mode, the vibration hydraulic pump mechanism is used for converting vibration energy into hydraulic potential energy, the high-pressure liquid storage pipeline is used for transmitting the hydraulic potential energy, and the mechanical energy conversion mechanism is used for converting the hydraulic potential energy into mechanical energy.
Furthermore, the vibration hydraulic pump mechanism comprises a mechanical damping spring, a stand column piston, a hydraulic oil cylinder and a pressure relief oil outlet, wherein the mechanical damping spring is fixedly connected with the tail part of the stand column piston, the stand column piston moves up and down in the hydraulic oil cylinder, the initial position is located at the top dead center of the stroke, and the pressure relief oil outlet is located at the bottom of the hydraulic oil cylinder and is connected with the high-pressure oil storage pipeline.
Further, the mechanical energy conversion mechanism comprises a small-caliber piston, an oil cylinder and a return spring, wherein the oil cylinder is connected with the tail end of the high-pressure oil storage pipeline, the tail end of the small-caliber piston is connected with a clockwork spring, the small-caliber piston moves in the oil cylinder, and the initial position is located at a stroke bottom dead center; the radius of the small-caliber piston is smaller than half of the radius of the upright post piston.
Furthermore, the speed regulating gear set is in a shape of a plurality of pagodas, and in a full-string state of the spring, the minimum speed regulating gear at the top of the speed regulating gear set is connected with the large-diameter driven gear through a transmission chain, so that the speed regulating gear participating in transmission gradually increases along with the reduction of the energy of the spring.
Furthermore, the speed regulating gear set, the speed regulating gear shaft and the speed regulating gears at all levels do not rotate relatively.
Furthermore, the electric energy conversion mechanism is a generator, the top of a rotor shaft of the generator is connected with the large-diameter driven gear, the rotor shaft of the motor comprises two split shafts, and the two split shafts are connected through a one-way clutch.
Furthermore, the hydraulic vibration energy recovery device further comprises an energy storage battery, and the energy storage battery is connected with the electric energy conversion mechanism.
The utility model also discloses an include hydraulic pressure vibrations energy recuperation device's car.
(III) advantageous effects
The above technical scheme of the utility model has following advantage:
(1) the utility model discloses a vibrations hydraulic pump mechanism converts vibrations energy into mechanical energy, reconvert into hydraulic pressure potential energy, rethread mechanical energy shifter converts hydraulic pressure potential energy into mechanical energy, then convert mechanical energy into the elasticity potential energy in the clockwork spring and interim energy storage through the clockwork spring, release by the clockwork spring at last, convert mechanical energy into through pagoda-shaped speed governing gear group and major diameter driven gear, the drive generator rotates, thereby realized whole car vibrations energy recovery, realized short-term, transient state energy conversion, interim storage, stable release and energy recuperation, the energy waste that has reduced vibrations and caused, be favorable to improving continuation of the journey mileage;
(2) the utility model discloses a pagoda shape speed governing gear group and major diameter driven gear realize the stable release of clockwork spring energy, and in the energy release process, clockwork spring energy is from big to little, and the speed governing gear group of pagoda shape is increased step by step along with the driven speed governing gear that participates in that the energy reduces, keeps the linear velocity stable for the rotational speed of major diameter driven gear drive generator remains stable in the energy release process, realizes the stable release of clockwork spring energy, the stable rotation of generator rotor; and the structure is simple and can adapt to the complex road conditions of all working conditions.
Drawings
The features and advantages of the invention will be more clearly understood by reference to the accompanying drawings, which are schematic and should not be understood as imposing any limitation on the invention, in which:
fig. 1 is a schematic diagram illustrating the operation of a hydraulic vibration energy recovery device according to the present invention;
in the figure: 1: vibrating the hydraulic pump mechanism; 2: a high pressure liquid storage line; 3: a mechanical energy conversion mechanism; 4: an energy storage speed regulating mechanism; 5: an electric energy conversion mechanism; 6: an energy storage battery; 11: a column piston; 12: a hydraulic cylinder; 13: a mechanical damping spring; 14: a pressure relief oil outlet; 31: a small bore piston; 32: an oil cylinder; 33: a return spring; 41: a clockwork spring; 42: a speed-regulating gear set; 43: a large diameter driven gear; 44: a transmission chain.
Detailed Description
The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
The embodiment of the utility model provides a hydraulic pressure vibrations energy recuperation device reaches include hydraulic pressure vibrations energy recuperation device's car, hydraulic pressure vibrations energy recuperation device is as shown in figure 1, including power conversion mechanism, energy storage speed adjusting mechanism 4, electric energy conversion mechanism 5 and energy storage battery 6, power conversion mechanism is including vibrations hydraulic pump mechanism 1, high-pressure liquid storage pipeline 2 and mechanical energy conversion mechanism 3, vibrations hydraulic pump mechanism 1 passes through hydraulic line with high-pressure liquid storage pipeline 2 and is connected, should high-pressure liquid storage pipeline 2 with mechanical energy conversion mechanism 3 passes through hydraulic line and connects, mechanical energy conversion mechanism 3 passes through mechanical system with energy storage speed governing actuating mechanism and is connected, energy storage speed governing actuating mechanism is connected through mechanical system with electric energy conversion mechanism 5.
The vibration hydraulic pump mechanism 1 comprises a mechanical damping spring 13, a column piston 11, a hydraulic oil cylinder 12 and a pressure relief oil outlet 14; the mechanical damping spring 13 is fixedly connected with the tail part of the upright post piston 11, the mechanical damping spring 13 is used for damping a vehicle body and returning the upright post piston 11, the upright post piston 11 protrudes out of the hydraulic oil cylinder 12, the bottom of the upright post piston 11 is arranged in the hydraulic oil cylinder 12 to move up and down, the initial position of the upright post piston is positioned at the top dead center of a stroke, the pressure relief oil outlet 14 at the bottom of the hydraulic oil cylinder 12 is connected with the high-pressure oil storage pipeline 2, and a hydraulic structure formed by the upright post piston 11 and the hydraulic oil cylinder 12 is used for absorbing vibration energy and converting the vibration energy into hydraulic potential energy; the vibration hydraulic pump mechanism 1 compresses a mechanical damping spring 13 by absorbing vibration energy transmitted by the whole vehicle to force an upright post piston 11 to downwards compress a volume below a piston of a hydraulic oil cylinder 12 filled with hydraulic oil, in the process, the vibration energy is firstly converted into mechanical energy and then converted into hydraulic potential energy, and the mechanical damping spring 13 enables the upright post piston 11 to return.
The high-pressure storage line 2 serves for the transmission of hydraulic energy.
The mechanical energy conversion mechanism 3 comprises a small-caliber piston 31, an oil cylinder 32 and a return spring 33, wherein the oil cylinder 32 is connected with the tail end of the high-pressure liquid storage pipeline 2, the radius of the small-caliber piston 31 is far smaller than that of the upright post piston 11, the radius of the small-caliber piston 31 is smaller than half of the radius of the upright post piston 11, the tail end of the small-caliber piston 31 is connected with a spring 41, the small-caliber piston 31 moves in the oil cylinder 32, and the initial position is located at the bottom dead center of the stroke; the small-bore piston 31 in the oil cylinder 32 of the mechanical energy conversion mechanism 3 is pushed by hydraulic potential energy to make a thrust stroke, and based on the principle that the pressure intensity of each position in a hydraulic system is consistent and the height of a uniform object with a small bottom area is larger under the condition of the same volume, the thrust obtained by the small-bore piston 31 is larger, the stroke is longer, and meanwhile, under the action of the return spring 33, the small-bore piston 31 makes a return stroke, and the stroke of the small-bore piston 31 returns. The formula applied is as follows:
equation 1: p ═ F/S Touch control
Equation 2: v is S Bottom *h
P-pressure, F-pressure, S Touch and touch Contact area, V-volume, h-height, S Bottom -a bottom area.
The energy storage and speed regulation driving mechanism takes a clockwork spring 41 as a temporary energy storage assembly, the energy storage and speed regulation driving mechanism comprises a clockwork spring 41 and a speed regulation device, the clockwork spring 41 is connected with the speed regulation device, the speed regulation device is connected with the electric energy conversion mechanism 5, the clockwork spring 41 is used for temporarily storing energy and driving the speed regulation device during energy release; the speed regulating device comprises a speed regulating gear set 42, a transmission chain 44 and a large-diameter driven gear 43, the spring 41 is connected with a gear shaft of the speed regulating gear set 42, the speed regulating gear of the speed regulating gear set 42 is connected with the large-diameter driven gear 43 through the transmission chain 44, the large-diameter driven gear 43 is connected with a generator rotor, the speed regulating gear set 42 is in a tower shape with a plurality of stages, the diameter difference of the two adjacent stages of speed regulating gears is small, the speed regulating gear set 42, the gear shaft and the speed regulating gears of each stage do not rotate relatively, in the full-chord state of the spring 41, the minimum speed regulating gear at the top of the speed regulating gear set 42 is connected with the large-diameter driven gear 43 through the transmission chain 44, the speed regulating gears participating in transmission are gradually increased along with the reduction of the energy of the spring 41, and the speed regulating assembly drives a driving wheel through the minimum speed regulating gear of the speed regulating gear when releasing the energy in the full-chord (maximum energy storage) state of the spring 41, and when the energy release of the spring 41 is finished, the driving wheel is driven by the maximum speed regulating gear of the speed regulating gears. In the pushing stroke of the small-caliber piston 31 of the mechanical energy conversion mechanism 3, the tail part of the small-caliber piston 31 drives the spring 41 of the energy storage speed regulation driving mechanism to tighten up, so as to temporarily store energy. The clockwork spring 41 after finishing energy storage drives the shaft of the pagoda-shaped speed regulating gear set 42 to rotate, the linear velocity of each stage of speed regulating gear of the pagoda-shaped speed regulating gear set 42 is different, the full string residual energy of the clockwork spring 41 is the largest in the energy releasing process of the clockwork spring 41, the speed regulating gear shaft rotates fast, the speed regulating gear which is driven by the large-diameter driven gear 43 through a chain is the smallest speed regulating gear at the top of the pagoda-shaped speed regulating gear set 42, the speed regulating gear which participates in the transmission gradually increases along with the proceeding of the energy releasing process, the energy releasing of the clockwork spring 41 is finished, the speed regulating gear shaft rotates slowly and tends to stop, the speed regulating gear which is driven by the large-diameter driven gear 43 through the chain is switched to the largest speed regulating gear at the bottom of the pagoda-shaped speed regulating gear set 42, the larger the energy of the clockwork spring 41 is, the smaller the speed regulating gear set 42 which participates in the transmission is the smaller, and the stable energy releasing of the clockwork spring 41 is realized. In the energy releasing process of the clockwork spring 41, the large-diameter driven gear 43 drives the rotor of the generator to rotate, so that the rotation power generation of the generator is realized. In the winding and charging process of the spring 41, all transmission paths of the energy storage speed regulation driving mechanism are reversely transmitted, but the generator is not reversely driven under the action of the one-way clutch on the rotor shaft of the generator.
The electric energy conversion mechanism 5 is a generator, the top of the rotor shaft of the generator is connected with the large-diameter driven gear 43 of the energy storage and speed regulation driving mechanism, the rotor shaft of the motor consists of two split shafts, the two split shafts are connected through a one-way clutch, the generator only rotates in the energy release transmission path of the spring 41 under the action of the one-way clutch to generate electricity, and the generator does not rotate and does not work in the energy charging path of the spring 41.
The electric energy generated by the electric energy conversion mechanism 5 is transmitted to the energy storage battery 6, so that the energy is recycled and stored.
The hydraulic connecting pipelines, the cavity and the oil cylinder of the mechanisms such as the vibration hydraulic pump mechanism 1, the high-pressure liquid storage pipeline 2, the mechanical energy conversion mechanism 3 and the like are all filled with high-pressure hydraulic oil; when the hydraulic vibration energy recovery device is in a non-working state, the upright post piston 11 is positioned at the stroke top dead center, the small-caliber piston 31 is positioned at the stroke bottom dead center, and each piston is in a force balance state.
Therefore, the operation mode of the hydraulic vibration energy recovery device is as follows: the vertical column piston 11 is driven to descend by vibration energy transmitted by the whole vehicle, the vertical column piston 11 is driven to return by the mechanical damping spring 13, the vertical column piston 11 intermittently moves up and down under the action of the vibration energy and resilience force, and the vibration energy generated by the vehicle under various complex road conditions is converted into hydraulic potential energy by the vibration hydraulic pump mechanism 1; the hydraulic potential energy enables the small-caliber piston 31 to move right, the return spring 33 enables the small-caliber piston 31 to return, the small-caliber piston 31 makes intermittent reciprocating motion under the action of the hydraulic potential energy and the rebound force, and the mechanical energy conversion mechanism 3 converts the hydraulic potential energy into mechanical energy; the small-caliber piston 31 moves rightwards to enable the spring 41 to be wound and stored, the stored energy of the spring 41 is increased along with winding, the spring 41 is full, temporary stored energy is completed, the small-caliber piston 31 returns to enable the spring 41 to return to release and release the stored energy, when the speed regulating gear driven by the pagoda-shaped speed regulating gear set 42 and the large-diameter driven gear 43 is switched from the minimum speed regulating gear to the maximum speed regulating gear step by step, the spring 41 is in a hollow shape, and the motion form of the spring 41 is converted from reciprocating motion to rotary motion; when the spring 41 tightens up the stored energy, the speed regulating gear shaft of the speed regulating gear set 42 is driven to rotate reversely and is transmitted to the generator through the large-diameter driven gear 43, but the generator does not rotate and does not work due to the one-way clutch, when the spring 41 releases and releases energy, the speed regulating gear shaft of the speed regulating gear set 42 is driven to rotate forwards and drives the generator rotor to rotate for generating electricity through the large-diameter driven gear 43, and the stored energy and speed regulating driving mechanism 4 converts mechanical energy into electric energy and stores the electric energy into the stored energy battery 6; in the energy releasing process of the clockwork spring 41, the energy is reduced from high to low, the rotating speed of the driving speed regulating gear shaft is reduced from high to low, the rotating speed n is reduced according to a linear velocity formula V-Dxπ xn, the diameter D of the speed regulating gear is increased, that is, the speed regulating gear participating in the transmission of the pagoda-shaped speed regulating gear set 42 is gradually increased along with the reduction of the energy, so as to keep the linear velocity stable, and keep the rotating speed of the generator driven by the large-diameter driven gear 43 stable in the energy releasing process.
In summary, the hydraulic vibration energy recovery device and the automobile have the following beneficial effects:
(1) the utility model discloses a vibrations hydraulic pump mechanism converts vibrations energy into mechanical energy, reconvert into hydraulic pressure potential energy, rethread mechanical energy shifter converts hydraulic pressure potential energy into mechanical energy, then convert mechanical energy into the elasticity potential energy in the clockwork spring and interim energy storage through the clockwork spring, release by the clockwork spring at last, convert mechanical energy into through pagoda-shaped speed governing gear group and major diameter driven gear, the drive generator rotates, thereby realized whole car vibrations energy recovery, realized short-term, transient state energy conversion, interim storage, stable release and energy recuperation, the energy waste that has reduced vibrations and caused, be favorable to improving continuation of the journey mileage;
(2) the utility model discloses a pagoda shape speed governing gear group and major diameter driven gear realize the stable release of clockwork spring energy, and in the energy release process, clockwork spring energy is from big to little, and the speed governing gear group of pagoda shape is increased step by step along with the driven speed governing gear that participates in that the energy reduces, keeps the linear velocity stable for the rotational speed of major diameter driven gear drive generator remains stable in the energy release process, realizes the stable release of clockwork spring energy, the stable rotation of generator rotor; and the structure is simple and can adapt to the complex road conditions of all working conditions.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope defined by the appended claims.
Claims (10)
1. The utility model provides a hydraulic pressure vibrations energy recuperation device which characterized in that, includes power conversion mechanism, energy storage speed control mechanism and electric energy conversion mechanism, energy storage speed control mechanism includes clockwork spring and speed adjusting device, power conversion mechanism connects the clockwork spring, reciprocating linear motion that power conversion mechanism and clockwork spring lead to vibrations is rotary motion, the clockwork spring is connected speed adjusting device, speed adjusting device connects the electric energy conversion mechanism, the clockwork spring is used for interim energy storage, drives during the release speed adjusting device.
2. The hydraulic vibration energy recovery device according to claim 1, wherein the speed regulating device comprises a speed regulating gear set, a transmission chain and a large-diameter driven gear, the spring is connected with a gear shaft of the speed regulating gear set, the speed regulating gear of the speed regulating gear set is connected with the large-diameter driven gear through the transmission chain, and the large-diameter driven gear is connected with the electric energy conversion mechanism.
3. The hydraulic vibration energy recovery device according to claim 2, wherein the power conversion mechanism includes a vibration hydraulic pump mechanism connected to the high pressure liquid storage line through a hydraulic line, a high pressure liquid storage line connected to the mechanical energy conversion mechanism through a hydraulic line, and a mechanical energy conversion mechanism mechanically connected to the power spring, the vibration hydraulic pump mechanism converting vibration energy into hydraulic potential energy, the high pressure liquid storage line transmitting hydraulic potential energy, the mechanical energy conversion mechanism converting hydraulic potential energy into mechanical energy.
4. The hydraulic shock energy recovery device according to claim 3, wherein the shock hydraulic pump mechanism comprises a mechanical shock absorbing spring, a column piston, a hydraulic cylinder and a pressure relief oil outlet, the mechanical shock absorbing spring is fixedly connected with the tail part of the column piston, the column piston moves up and down in the hydraulic cylinder, the initial position is located at the top dead center of the stroke, and the pressure relief oil outlet is located at the bottom of the hydraulic cylinder and connected with the high-pressure oil storage pipeline.
5. The hydraulic shock energy recovery device according to claim 4, wherein the mechanical energy conversion mechanism comprises a small-bore piston, an oil cylinder and a return spring, the oil cylinder is connected with the end of the high-pressure oil storage pipeline, the end of the small-bore piston is connected with a clockwork spring, the small-bore piston moves in the oil cylinder, the initial position is at the bottom dead center of the stroke, and the radius of the small-bore piston is smaller than half of the radius of the upright piston.
6. The hydraulic shock energy recovery device according to claim 5, wherein the speed governing gear set is in the shape of a pagoda with several stages, and in the state of full string of the spring, the smallest speed governing gear at the top of the speed governing gear set is connected with the large diameter driven gear through a transmission chain, and the speed governing gear participating in transmission gradually becomes larger as the energy of the spring decreases.
7. The hydraulic shock energy recovery device of claim 6 wherein the speed gearset does not have relative rotation with the speed gearset shaft and the stage gears.
8. The hydraulic shock energy recovery device according to claim 7 wherein the electric energy conversion mechanism is a generator, the top of the rotor shaft of the generator is connected to the large diameter driven gear, the rotor shaft of the motor comprises two split shafts, and the two split shafts are connected by a one-way clutch.
9. The hydraulic shock energy recovery device of claim 8 further comprising an energy storage battery connected to the power conversion mechanism.
10. A vehicle comprising a hydraulic shock energy recovery device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221513945.XU CN217421448U (en) | 2022-06-16 | 2022-06-16 | Hydraulic vibration energy recovery device and automobile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221513945.XU CN217421448U (en) | 2022-06-16 | 2022-06-16 | Hydraulic vibration energy recovery device and automobile |
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| CN217421448U true CN217421448U (en) | 2022-09-13 |
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| CN202221513945.XU Active CN217421448U (en) | 2022-06-16 | 2022-06-16 | Hydraulic vibration energy recovery device and automobile |
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Effective date of registration: 20240110 Address after: 646003 Section 4, Jiugu Avenue, High tech Zone, Luzhou City, Sichuan Province Patentee after: Luzhou Rongda Intelligent Transmission Co.,Ltd. Address before: Section 4, jiugu Avenue, high tech Zone, Luzhou City, Sichuan Province Patentee before: Luzhou Rongda Intelligent Transmission Co.,Ltd. Patentee before: Hunan Yung Da intelligent transmission Limited by Share Ltd. |
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