CN112161053A - Control device of hybrid power construction machinery - Google Patents
Control device of hybrid power construction machinery Download PDFInfo
- Publication number
- CN112161053A CN112161053A CN202011013853.0A CN202011013853A CN112161053A CN 112161053 A CN112161053 A CN 112161053A CN 202011013853 A CN202011013853 A CN 202011013853A CN 112161053 A CN112161053 A CN 112161053A
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- Prior art keywords
- liquid cooling
- gear
- cooling shell
- fixed connection
- variable speed
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000010276 construction Methods 0.000 title claims abstract description 23
- 238000001816 cooling Methods 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 45
- 239000000725 suspension Substances 0.000 claims abstract description 21
- 230000001360 synchronised effect Effects 0.000 claims description 21
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 3
- 238000005339 levitation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 5
- 238000000034 method Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/32—Gear shift yokes, e.g. shift forks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/32—Electric motors actuators or related electrical control means therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a control device of a hybrid power construction machine, which belongs to the field of hybrid power control devices, and adopts a liquid cooling shell to cool a servo motor and a magnetic suspension idle running switching module, thereby effectively prolonging the service life of the device, and when in use, in order to effectively save energy consumption, automatic gear switching is adopted, when power sources need to be switched, an internal servo motor is firstly closed and then enters an idle running state, after the power sources enter the idle running state, the friction force generated in the rotating process can be effectively eliminated through the magnetic suspension idle running switching module, thereby achieving the energy-saving effect.
Description
Technical Field
The present invention relates to the field of hybrid power control devices, and particularly to a control device for a hybrid power construction machine.
Background
Conventionally, a relatively small-capacity motor is generally used in a construction machine, and when a drive is operated, the motor is used at or above a rated capacity. The reason why the small-capacity motor is used particularly and is used at a rated capacity or higher is as follows. That is, if the motor has a small capacity, the cost advantage is high, and the actuator of the construction machine, for example, a bucket cylinder, a boom cylinder, a rotating electric machine, has a very short continuous operation time of several seconds, and causes almost no problem such as burnout even if the motor is driven at a rated capacity or more;
at present, a control device of a hybrid power construction machine easily consumes energy in a switching process and cannot be butted in a motion state.
Disclosure of Invention
The present invention is made to solve the above problems, and provides a control device for a hybrid construction machine.
In order to achieve the purpose, the invention adopts the following technical scheme:
a control device of a hybrid construction machine, comprising: magnetic suspension idle running switches module and variable speed focusing case, the variable speed is focused case left side and magnetic suspension idle running module right side fixed connection, variable speed is focused case middle part and left side and all is provided with the mounting groove with power supply assorted, the inside fixed mounting of variable speed focusing case has variable speed focusing mechanism, variable speed focusing mechanism right side is provided with the outside power supply interface with the matching, variable speed is focused mechanism left side top and inside electric power mechanism phase-match, variable speed is focused mechanism left side and magnetic suspension idle running module fixed connection, magnetic suspension idle running module axle center is provided with the power take off interface, variable speed is focused mechanism front side and power switching mechanism fixed connection.
Preferably, the internal power mechanism includes: servo motor and linkage gear, liquid cooling shell outside top middle part fixed mounting has servo motor, the servo motor left end extends to inside and with linkage gear axle center fixed connection of liquid cooling shell, linkage gear downside is connected with the meshing of variable speed focusing mechanism.
Preferably, the magnetic levitation lost motion module includes: liquid cooling shell, electro-magnet, rotor coil and connecting axle, both sides all are provided with the installation cavity of electro-magnet about the inside of liquid cooling shell right side, the inboard is provided with rotor coil in the liquid cooling shell inside, rotor coil has been placed at the cavity middle part, rotor coil fixed mounting is on the connecting axle, connecting axle left end and outside building machinery power input port fixed connection, the connecting axle right-hand member is with variable speed focusing mechanism left side fixed connection.
Preferably, the variable speed focusing mechanism comprises: liquid cooling shell, input gear group, integral key shaft, synchronous gear group, shift fork, gear level, output gear, synchronous gear, drive gear and transmission shaft, the connecting axle right-hand member extends to liquid cooling shell middle part and drive gear axle center fixed connection, drive gear axle center and transmission shaft left side fixed connection, transmission shaft middle part right side and output gear axle center fixed connection, transmission shaft left end and liquid cooling shell inner wall swing joint, transmission shaft right-hand member and integral key shaft left end swing joint, integral key shaft middle part and synchronous gear axle center swing joint, integral key shaft right side and input gear group downside axle center fixed connection, integral key shaft right-hand member and liquid cooling shell inner wall swing joint, integral key shaft middle part left side fixed mounting has the shift fork of shifting, shift fork and gear level middle part fixed connection, input gear group, Output gear and synchronous gear downside all are connected with synchronous gear group meshing, synchronous gear group left and right sides and liquid cooling shell inner wall swing joint, the gear level right-hand member extends to liquid cooling shell left side inside and power switching mechanism swing joint, input gear group axle center and external power source fixed connection.
Preferably, the power switching mechanism includes: the switching mechanism comprises a liquid cooling shell, a switching motor and a switching connecting rod, wherein the switching motor is fixedly mounted inside the right side of the liquid cooling shell, the switching motor is fixedly connected with one end of the switching connecting rod, and the other end of the switching connecting rod is fixedly connected with the right end of a gear shifting rod extending to the inside of the left side of the liquid cooling shell.
Preferably, the output gear and the synchronous gear are provided with grooves matched with the shifting forks towards one sides of the shifting forks.
Compared with the prior art, the invention provides a control device of a hybrid construction machine, which has the following beneficial effects:
1. the invention has the beneficial effects that: the liquid cooling shell is adopted to cool the servo motor and the magnetic suspension idling switching module, the service life of the device is effectively prolonged, and when the device is used, in order to effectively save energy consumption, automatic gear switching is adopted, when power sources need to be switched, the internal servo motor is firstly closed and then enters an idling state, after the idling state is entered, the magnetic suspension idling switching module can effectively eliminate friction force generated in the rotating process, so that an energy-saving effect is achieved, in the switching process, the switching motor is started to drive the switching connecting rod to drive the shifting rod to move, the shifting fork is driven to move on the spline shaft and is separated from the output gear group, then the device enters an external power source driving mode, the servo motor can be closed in the external power source driving mode, and the energy consumption can be effectively saved under the condition that the friction force is eliminated through the magnetic suspension idling switching module, and through built-in servo motor, after external power source drive mode switches, insert again through starting switching motor and can use when needing to plug into servo motor.
Drawings
Fig. 1 is a perspective view of an embodiment of a control device for a hybrid construction machine according to the present invention;
FIG. 2 is a perspective exploded view of an embodiment of a control device for a hybrid construction machine according to the present invention;
FIG. 3 is a perspective exploded view of an embodiment of a control device for a hybrid construction machine according to the present invention;
fig. 4 is a perspective exploded view of an embodiment of a control device for a hybrid construction machine according to the present invention.
FIG. 5 is a perspective exploded view of an embodiment of a control device for a hybrid construction machine according to the present invention;
fig. 6 is a perspective exploded view of an embodiment of a control device for a hybrid construction machine according to the present invention.
Reference numerals:
101 magnetic suspension idle running switching module, 102 speed change focusing box, 201 servo motor, 202 linkage gear, 301 liquid cooling shell, 302 electromagnet, 303 rotor coil, 304 connecting shaft, 401 input gear set, 402 spline shaft, 403 synchronous gear set, 404 shift fork, 405 shift lever, 406 output gear, 407 synchronous gear, 408 transmission gear, 409 transmission shaft, 501 switching motor and 502 switching connecting rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1:
referring to fig. 1 to 6, a control device of a hybrid construction machine includes: the magnetic suspension idling switching module 101 and the variable speed focusing box 102 are arranged, the left side of the variable speed focusing box 102 is fixedly connected with the right side of the magnetic suspension idling module 101, mounting grooves matched with a power source are formed in the middle and the left side of the variable speed focusing box 102, a variable speed focusing mechanism is fixedly mounted inside the variable speed focusing box 102, an external power source interface matched with the variable speed focusing mechanism is arranged on the right side of the variable speed focusing mechanism, the upper side of the left side of the variable speed focusing mechanism is matched with an internal power mechanism, the left side of the variable speed focusing mechanism is fixedly connected with the magnetic suspension idling module 102, a power output interface is arranged on the axis of the magnetic suspension idling.
The internal power mechanism includes: servo motor 201 and linkage gear 202, liquid cooling shell 301 outside top middle part fixed mounting have servo motor 201, and servo motor 201 left end extends to inside liquid cooling shell 301 and with linkage gear 202 axle center fixed connection, linkage gear 202 downside and variable speed focus mechanism meshing connection.
The magnetic levitation lost motion module 101 includes: liquid cooling shell 301, electro-magnet 302, rotor coil 303 and connecting axle 304, both sides all are provided with the installation cavity of electro-magnet 302 about the inside of liquid cooling shell 301 right side, and liquid cooling shell 301 inside is provided with rotor coil 303, and rotor coil 303 has been placed at the cavity middle part, and rotor coil 303 fixed mounting is on connecting axle 304, and connecting axle 304 left end and outside building machinery power input port fixed connection, connecting axle 304 right-hand member and variable speed focus mechanism left side fixed connection.
The variable speed focusing mechanism comprises: the liquid cooling shell 301, the input gear set 401, the spline shaft 402, the synchronous gear set 403, the shifting fork 404, the shifting rod 405, the output gear 406, the synchronous gear 407, the transmission gear 408 and the transmission shaft 409, the right end of the connecting shaft 304 extends to the middle of the liquid cooling shell 301 and is fixedly connected with the axis of the transmission gear 408, the axis of the transmission gear 408 is fixedly connected with the left side of the transmission shaft 409, the right side of the middle part of the transmission shaft 409 is fixedly connected with the axis of the output gear 406, the left end of the transmission shaft 409 is movably connected with the inner wall of the liquid cooling shell 301, the right end of the transmission shaft 409 is movably connected with the left end of the spline shaft 402, the middle part of the spline shaft 402 is movably connected with the axis of the synchronous gear 407, the right side of the spline shaft 402 is fixedly connected with the axis, the lower sides of the input gear set 401, the output gear 406 and the synchronous gear 407 are all meshed with the synchronous gear set 403, the left side and the right side of the synchronous gear set 403 are movably connected with the inner wall of the liquid cooling shell 301, the right end of the shift lever 405 extends to the left inside of the liquid cooling shell 301 to be movably connected with the power switching mechanism, and the axis of the input gear set 401 is fixedly connected with an external power source.
The power switching mechanism includes: liquid cooling shell 301, switching motor 501 and switching connecting rod 502, liquid cooling shell 301 right side inside fixed mounting have switching motor 501, switch motor 501 and switch connecting rod 502 one end fixed connection, switch connecting rod 502 other end and extend to liquid cooling shell 301 left side inside gear level 405 right end fixed connection.
Both the output gear 406 and the synchronizing gear 407 are provided with a groove matching the shift fork 404 toward the side of the shift fork 404.
Example 2: the difference is based on example 1;
the liquid cooling shell 301 is adopted to cool the servo motor 201 and the magnetic suspension idling switching module 101, the service life of the device is effectively prolonged, and in use, in order to effectively save energy consumption, gears are automatically switched, when power sources need to be switched, the internal servo motor 201 is firstly closed and then enters an idling state, after the idling state is entered, friction force generated in the rotation process can be effectively eliminated through the magnetic suspension idling switching module 101, the energy-saving effect is achieved, in the switching process, the switching motor 501 is started to drive the switching connecting rod 502 to drive the gear shifting rod 405 to move, the gear shifting fork 404 is driven to move on the spline shaft 402 and separate from the output gear set 401, then the external power source driving mode is entered, the servo motor 201 can be closed in the external power source driving mode, and energy consumption can be effectively saved under the condition that the friction force is eliminated through the magnetic suspension idling switching module 101, and through built-in servo motor 201, after external power source drive mode switches, need to plug into servo motor 201 and insert again and can use through starting switching motor 501.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. A control device of a hybrid construction machine, comprising: magnetic suspension idle rotation switches module (101) and variable speed focusing case (102), its characterized in that, variable speed focusing case (102) left side and magnetic suspension idle rotation module (101) right side fixed connection, variable speed focusing case (102) middle part and left side all are provided with power supply assorted mounting groove, variable speed focusing case (102) inside fixed mounting has variable speed focusing mechanism, variable speed focusing mechanism right side is provided with the outside power supply interface with the matching, variable speed focusing mechanism left side top and inside electric power mechanism phase-match, variable speed focusing mechanism left side and magnetic suspension idle rotation module (102) fixed connection, magnetic suspension idle rotation module (102) axle center is provided with the power take off interface, variable speed focusing mechanism front side and power switching mechanism fixed connection.
2. The method of manufacturing a control device for a hybrid construction machine according to claim 1, wherein: the internal power mechanism includes: servo motor (201) and linkage gear (202), liquid cooling shell (301) outside top middle part fixed mounting has servo motor (201), servo motor (201) left end extend to liquid cooling shell (301) inside and with linkage gear (202) axle center fixed connection, linkage gear (202) downside and variable speed focus mechanism meshing are connected.
3. The method of manufacturing a control device for a hybrid construction machine according to claim 1, wherein: the magnetic levitation lost motion module (101) comprises: liquid cooling shell (301), electro-magnet (302), rotor coil (303) and connecting axle (304), both sides all are provided with the installation cavity of electro-magnet (302) about the inside of liquid cooling shell (301) right side, liquid cooling shell (301) inside side is provided with rotor coil (303), rotor coil (303) have been placed at the cavity middle part, rotor coil (303) fixed mounting is on connecting axle (304), connecting axle (304) left end and outside building machinery power input port fixed connection, connecting axle (304) right-hand member and variable speed focus mechanism left side fixed connection.
4. The method of manufacturing a control device for a hybrid construction machine according to claim 1, wherein: the variable speed focusing mechanism comprises: liquid cooling shell (301), input gear group (401), integral key shaft (402), synchronous gear group (403), shift fork (404), gear level (405), output gear (406), synchronous gear (407), drive gear (408) and transmission shaft (409), connecting axle (304) right-hand member extends to liquid cooling shell (301) middle part and drive gear (408) axle center fixed connection, drive gear (408) axle center and transmission shaft (409) left side fixed connection, transmission shaft (409) middle part right side and output gear (406) axle center fixed connection, transmission shaft (409) left end and liquid cooling shell (301) inner wall swing joint, transmission shaft (409) right-hand member and integral key shaft (402) left end swing joint, integral key shaft (402) middle part and synchronous gear (407) axle center swing joint, integral key shaft (402) right side and input gear group (401) downside axle center fixed connection, spline shaft (402) right-hand member and liquid cooling shell (301) inner wall swing joint, spline shaft (402) middle part left side fixed mounting has shift fork (404), shift fork (404) and gear level (405) middle part fixed connection shift, input gear group (401), output gear (406) and synchronizing gear (407) downside all are connected with synchronous gear group (403) meshing, synchronous gear group (403) left and right sides and liquid cooling shell (301) inner wall swing joint, gear level (405) right-hand member extends to inside and power switching mechanism swing joint in liquid cooling shell (301) left side, input gear group (401) axle center and external power source fixed connection.
5. The method of manufacturing a control device for a hybrid construction machine according to claim 1, wherein: the power switching mechanism includes: liquid cooling shell (301), switching motor (501) and switching connecting rod (502), the inside fixed mounting in liquid cooling shell (301) right side has switching motor (501), switching motor (501) and switching connecting rod (502) one end fixed connection, switching connecting rod (502) other end and the gear level (405) right-hand member fixed connection that extends to liquid cooling shell (301) left side inside.
6. The method of manufacturing a control device for a hybrid construction machine according to claim 4, wherein: the output gear (406) and the synchronous gear (407) are provided with grooves matched with the shifting fork (404) towards one side of the shifting fork (404).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011013853.0A CN112161053A (en) | 2020-09-24 | 2020-09-24 | Control device of hybrid power construction machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011013853.0A CN112161053A (en) | 2020-09-24 | 2020-09-24 | Control device of hybrid power construction machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112161053A true CN112161053A (en) | 2021-01-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011013853.0A Withdrawn CN112161053A (en) | 2020-09-24 | 2020-09-24 | Control device of hybrid power construction machinery |
Country Status (1)
| Country | Link |
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| CN (1) | CN112161053A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115899234A (en) * | 2022-11-25 | 2023-04-04 | 中国第一汽车股份有限公司 | Wireless gear shift operating device |
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| CN103993964A (en) * | 2014-04-22 | 2014-08-20 | 郑州宇通客车股份有限公司 | Engine auxiliary starting system for idling starting and stopping and vehicle power system |
| CN105946543A (en) * | 2016-06-14 | 2016-09-21 | 西安交通大学 | Power distributed oil and electricity hybrid power system integrated with flywheel battery |
| CN209483883U (en) * | 2018-12-29 | 2019-10-11 | 杭州登腾科技有限公司 | A kind of hybrid gearbox and hybrid vehicle |
| CN110667368A (en) * | 2019-10-16 | 2020-01-10 | 中汽研（天津）汽车工程研究院有限公司 | A four-wheel drive vehicle hybrid power system and working method |
| CN111114282A (en) * | 2018-10-31 | 2020-05-08 | 比亚迪股份有限公司 | Power driving system and vehicle |
-
2020
- 2020-09-24 CN CN202011013853.0A patent/CN112161053A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2480625Y (en) * | 2000-11-10 | 2002-03-06 | 李沂清 | Storage device with mechanical kinetic energy miniature lose |
| CN103993964A (en) * | 2014-04-22 | 2014-08-20 | 郑州宇通客车股份有限公司 | Engine auxiliary starting system for idling starting and stopping and vehicle power system |
| CN105946543A (en) * | 2016-06-14 | 2016-09-21 | 西安交通大学 | Power distributed oil and electricity hybrid power system integrated with flywheel battery |
| CN111114282A (en) * | 2018-10-31 | 2020-05-08 | 比亚迪股份有限公司 | Power driving system and vehicle |
| CN209483883U (en) * | 2018-12-29 | 2019-10-11 | 杭州登腾科技有限公司 | A kind of hybrid gearbox and hybrid vehicle |
| CN110667368A (en) * | 2019-10-16 | 2020-01-10 | 中汽研（天津）汽车工程研究院有限公司 | A four-wheel drive vehicle hybrid power system and working method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115899234A (en) * | 2022-11-25 | 2023-04-04 | 中国第一汽车股份有限公司 | Wireless gear shift operating device |
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Application publication date: 20210101 |