CN105240524A - Hydraulic automatic control transmission - Google Patents
Hydraulic automatic control transmission Download PDFInfo
- Publication number
- CN105240524A CN105240524A CN201510786888.0A CN201510786888A CN105240524A CN 105240524 A CN105240524 A CN 105240524A CN 201510786888 A CN201510786888 A CN 201510786888A CN 105240524 A CN105240524 A CN 105240524A
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- China
- Prior art keywords
- gear
- oil inlet
- oil
- shaft
- inlet hole
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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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Classifications
-
- 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
- F16H61/38—Control of exclusively fluid gearing
- F16H61/40—Control of exclusively fluid gearing hydrostatic
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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
- F16H2708/00—Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes
- F16H2708/16—Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes wherein the gearing is not described or not essential
- F16H2708/20—Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes wherein the gearing is not described or not essential the control being hydraulic or pneumatic
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention relates to a hydraulic automatic control transmission which is simple in structure and convenient to operate. The hydraulic automatic control transmission comprises an input shaft and an output shaft, wherein input gears are fixedly arranged on the input shaft; output gears are connected to the output shaft through hydraulic power output devices; a protrusion part is also arranged on the outer side surface of the input shaft; a first oil pump is arranged under the protrusion part; a middle variable-speed shaft is arranged in the output shaft; an oil entering and returning shaft is also arranged in the middle variable-speed shaft; an oil entering channel and an oil returning channel are arranged in the oil entering and returning shaft; the oil entering channel and the oil returning channel are respectively connected with the first oil pump; accommodating grooves are respectively formed in the two sides of the output gear; the hydraulic power output devices are arranged in the accommodating grooves, and each hydraulic power output device comprises a connecting pipe; fixing pieces are fixedly arranged on the outer side surfaces of the connecting pipe; floating pieces are arranged between the fixing pieces and connecting pieces of the output gear; a first oil entering hole and a first oil returning hole are formed in the output shaft; a second oil entering hole and a second oil returning hole are formed in the oil entering and returning shaft; a connecting hole is formed in the middle variable shaft.
Description
Technical field
The present invention relates to a kind of speed changer, particularly relate to a kind of hydraulic pressure automatic control of transmission.
Background technique
Speed changer is one of parts indispensable on automobile, existing speed changer comprises manual transmission and automatic transmission, and manual transmission needs operator's pin stepping on clutch in use, uses inconvenience, and existing automatic transmission structure is complicated, price is higher.
Because above-mentioned defect, the design people, actively in addition research and innovation, to founding a kind of speed changer of new structure, make it have more value in industry.
Summary of the invention
For solving the problems of the technologies described above, the object of this invention is to provide the hydraulic pressure automatic control of transmission that a kind of structure is simple, easy to operate.
Hydraulic pressure automatic control of transmission of the present invention, comprise input shaft, transmission shaft, input gear and the output gear corresponding to input gear, described input gear comprises a reverse gear input gear and at least one forward gear input gear, and input gear is fixedly installed on input shaft, described output gear is connected on transmission shaft by hydraulic power output device, intermediate gear is provided with between described reverse gear input gear and corresponding input gear, described intermediate gear is meshed to reverse gear input gear and the output gear corresponding with reverse gear input gear respectively, described forward gear input gear is meshed with corresponding output shelves gear respectively, the outer side surface of described input shaft is also provided with protuberance, the below of described protuberance is provided with the first oil pump, described protuberance can contact with the first oily delivery side of pump thus drive the first oil pump to operate, middle variable-speed shaft is provided with in described transmission shaft, oil inlet and oil return axle is also provided with in described middle variable-speed shaft, forward gear oil inlet passage is provided with in described oil inlet and oil return axle, reverse gear oil inlet passage and drainback passage, described forward gear oil inlet passage is communicated with the first oily delivery side of pump by oil pipe, described drainback passage is communicated with by the input end of oil pipe with the first oil pump, the both sides of described output gear offer containing groove respectively, described hydraulic power output device sealing is arranged in containing groove, hydraulic power output device comprises the fixed plate be arranged in parallel, connecting sheet and floating slice, fixed plate is connected with transmission shaft respectively with floating slice, connecting sheet is connected with output gear, on the sidewall of described transmission shaft, the position of corresponding each hydraulic power output device is respectively equipped with the first oil inlet hole and the first spill port, described first oil inlet hole and the first spill port communicate with containing groove respectively, the position of correspondence first oil inlet hole of described oil inlet and oil return axle is provided with the second oil inlet hole, described second oil inlet hole is corresponding with the first oil inlet hole, and the second oil inlet hole of corresponding forward gear input gear communicates with forward gear oil inlet passage, second oil inlet hole of corresponding reverse gear input gear communicates with the oil inlet passage that reverses gear, the position of correspondence first spill port of oil inlet and oil return axle is provided with the second spill port, described second spill port is corresponding with the first spill port, and the second spill port communicates with drainback passage, correspondence first oil inlet hole of described middle variable-speed shaft and the position of the first spill port offer attachment hole respectively, described attachment hole is for being communicated with the first oil inlet hole and the second oil inlet hole, or for being communicated with the first spill port and the second spill port, and the position distribution of attachment hole makes middle variable-speed shaft in the process axially moved from left to right, each first oil inlet hole is communicated with the second corresponding oil inlet hole respectively successively, each first spill port is communicated with the second corresponding spill port respectively successively accordingly simultaneously, and have simultaneously and only have first oil inlet hole to be communicated with the second oil inlet hole, described hydraulic pressure automatic shift control device also comprises the second oil pump and mechanical shifting fork structure, described second oil pump is arranged on transmission shaft, and the second oily delivery side of pump is connected with middle variable-speed shaft, second oil pump moves axially in transmission shaft for driving middle variable-speed shaft, in the middle of described mechanical shifting fork structure controls when being used for automobile starting, variable-speed shaft does axial initial movable.
Further, hydraulic pressure automatic control of transmission of the present invention, the number of described forward gear input gear is 5.
Further, hydraulic pressure automatic control of transmission of the present invention, described fixed plate is connected with transmission shaft respectively by spline with floating slice, and described connecting sheet is connected with output gear by spline.
By such scheme, the present invention at least has the following advantages: hydraulic pressure automatic control of transmission of the present invention is without the need to pin stepping on clutch, power is transported to input shaft by motor, input gear fixing on input shaft passes to the output gear on transmission shaft, again by hydraulic power output device respectively by transmission of power to transmission shaft, outside transmission shaft is given by transmission of power by transmission shaft, wherein, the setting of the protuberance on input shaft, protuberance can be rotated along with the rotation of input shaft, thus drive the first oil pump running be arranged on below protuberance, the hydraulic oil that first oil pump exports is respectively through forward gear oil inlet passage or the oil inlet passage that reverses gear, second oil inlet hole, attachment hole, first oil inlet hole enters into hydraulic power output device, then again respectively through the first spill port, attachment hole, second spill port, drainback passage turns back to the first oil pump, the switching of gear moves axially realization by middle variable-speed shaft, when middle variable-speed shaft axially moves from left to right, be positioned at attachment hole on middle variable-speed shaft just respectively by the first oil inlet hole, second oil inlet hole is communicated with, first spill port, second spill port is communicated with, along with moving axially of middle variable-speed shaft, first oil inlet hole corresponding with each gear, second oil inlet hole is communicated with, first spill port, second spill port is communicated with, thus the hydraulic power output device of respective notch and the first oil pump are connected, realize the first oil pump to the pressurization of hydraulic power output device and pressure release, thus make power be delivered on transmission shaft by output gear, realize the switching of different gear.And moving axially of middle variable-speed shaft realizes by the second oil pump be arranged on transmission shaft, second oil pump changes the oil pressure of output hydraulic pressure oil automatically according to the rotating speed (i.e. the gas car speed of a motor vehicle) of transmission shaft, thus make middle variable-speed shaft move axially to realize each gear the first oil inlet hole, the second oil inlet hole and the first spill port one to one, the UNICOM of the second spill port and disconnection.Such as in the middle of variable-speed shaft non rotating time and car transfixion time, middle variable-speed shaft keeps motionless position, each gear is the first oil inlet hole, the second oil inlet hole and the first spill port one to one, second spill port remains open state respectively, at this moment the hydraulic power output device that each gear is corresponding pressurizes without hydraulic oil, does not also just have power to export to transmission shaft through the corresponding hydraulic power output device of each gear.The starting (advance and fall back) of automobile controls the axial initial movable of middle variable-speed shaft by mechanical shifting fork structure and realizes.In addition, when needs transferring power, hydraulic oil enters hydraulic power output device, and the first oil pump return opening is closed and to hydraulic power output device pressurization, hydraulic power output device by hydraulic oil, fixed plate, floating slice, friction between connecting sheet by power by gear transmission to transmission shaft.Can be found out by above description, hydraulic pressure automatic control of transmission of the present invention is without the need to making the clutch tramped with one's feet, easy and simple to handle, and simultaneously compared to existing automatic transmission, its structure is simple, and manufacture cost is lower.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of specification, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of hydraulic pressure automatic control of transmission of the present invention;
Fig. 2 is the side view of transmission shaft;
Fig. 3 is the structural representation of output gear and hydraulic power output device;
In figure, 1: input shaft; 2: transmission shaft; 3: input gear; 4: output gear; 5: reverse gear input gear; 6: forward gear input gear; 7: intermediate gear; 8: protuberance; 9: the first oil pumps; 10: middle variable-speed shaft; 11: oil inlet and oil return axle; 12: forward gear oil inlet passage; 13: drainback passage; 14: containing groove; 15: connecting sheet; 16: hydraulic power output device; 17: reverse gear oil inlet passage; 18: fixed plate; 19: floating slice; 20: the first oil inlet holes; 21: the first spill ports; 22: the second oil inlet holes; 23: the second spill ports; 24: the second oil pumps; 25: mechanical shifting fork structure.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
See Fig. 1 to Fig. 3, a kind of hydraulic pressure automatic control of transmission of a preferred embodiment of the present invention, comprise input shaft 1, transmission shaft 2, input gear 3 and the output gear 4 corresponding to input gear, input gear comprises a reverse gear input gear 5 and at least one forward gear input gear 6, and input gear is fixedly installed on input shaft, output gear is connected on transmission shaft by hydraulic power output device 16, intermediate gear 7 is provided with between reverse gear input gear and corresponding input gear, intermediate gear is meshed to reverse gear input gear and the output gear corresponding with reverse gear input gear respectively, forward gear input gear is meshed with corresponding output shelves gear respectively, the outer side surface of input shaft is also provided with protuberance 8, the below of protuberance is provided with the first oil pump 9, protuberance can contact with the first oily delivery side of pump thus drive the first oil pump to operate, middle variable-speed shaft 10 is provided with in transmission shaft, oil inlet and oil return axle 11 is also provided with in middle variable-speed shaft, forward gear oil inlet passage 12 is provided with in oil inlet and oil return axle, reverse gear oil inlet passage 17 and drainback passage 13, forward gear oil inlet passage is communicated with the first oily delivery side of pump respectively by oil pipe with the oil inlet passage that reverses gear, drainback passage is communicated with by the input end of oil pipe with the first oil pump, the both sides of output gear offer containing groove 14 respectively, hydraulic power output device sealing is arranged in containing groove, hydraulic power output device comprises the fixed plate 18 be arranged in parallel, connecting sheet 15 and floating slice 19, fixed plate is connected with transmission shaft respectively with floating slice, connecting sheet is connected with output gear, on the sidewall of transmission shaft, the position of corresponding each hydraulic power output device is respectively equipped with the first oil inlet hole 20 and the first spill port 21, first oil inlet hole and the first spill port communicate with containing groove respectively, the position of correspondence first oil inlet hole of oil inlet and oil return axle is provided with the second oil inlet hole 22, second oil inlet hole is corresponding with the first oil inlet hole, and the second oil inlet hole of corresponding forward gear input gear communicates with forward gear oil inlet passage, second oil inlet hole of corresponding reverse gear input gear communicates with the oil inlet passage that reverses gear, the position of correspondence first spill port of oil inlet and oil return axle is provided with the second spill port 23, second spill port is corresponding with the first spill port, and the second spill port communicates with drainback passage, middle correspondence first oil inlet hole of variable-speed shaft and the position of the first spill port offer attachment hole (not shown) respectively, attachment hole is for being communicated with the first oil inlet hole and the second oil inlet hole, or for being communicated with the first spill port and the second spill port, and the position distribution of attachment hole makes middle variable-speed shaft in the process axially moved from left to right, each first oil inlet hole is communicated with the second corresponding oil inlet hole respectively successively, each first spill port is communicated with the second corresponding spill port respectively successively accordingly simultaneously, and have simultaneously and only have first oil inlet hole to be communicated with the second oil inlet hole, hydraulic pressure automatic shift control device also comprises the second oil pump 24 and mechanical shifting fork structure 25, second oil pump is arranged on transmission shaft, and the second oily delivery side of pump is connected with middle variable-speed shaft, second oil pump moves axially in transmission shaft for driving middle variable-speed shaft, in the middle of machinery shifting fork structure controls when being used for automobile starting, variable-speed shaft does axial initial movable.
During concrete use, power is transported to input shaft by motor, input gear fixing on input shaft passes to the output gear on transmission shaft, again by hydraulic power output device respectively by transmission of power to transmission shaft, outside transmission shaft is given by transmission of power by transmission shaft, wherein, the setting of the protuberance on input shaft, protuberance can be rotated along with the rotation of input shaft, thus drive the first oil pump running be arranged on below protuberance, the hydraulic oil that first oil pump exports is respectively through forward gear oil inlet passage, second oil inlet hole, attachment hole, first oil inlet hole enters into hydraulic power output device, then again respectively through the first spill port, attachment hole, second spill port, drainback passage turns back to the first oil pump, the switching of gear moves axially realization by middle variable-speed shaft, when middle variable-speed shaft axially moves from left to right, be positioned at attachment hole on middle variable-speed shaft just respectively by the first oil inlet hole, second oil inlet hole is communicated with, first spill port, second spill port is communicated with, along with moving axially of middle variable-speed shaft, first oil inlet hole corresponding with each gear, second oil inlet hole is communicated with, first spill port, second spill port is communicated with, thus the hydraulic power output device of respective notch and the first oil pump are connected, realize the first oil pump to the pressurization of hydraulic power output device and pressure release, thus make power be delivered on transmission shaft by output gear, realize the switching of different gear.And moving axially of middle variable-speed shaft realizes by the second oil pump be arranged on transmission shaft, second oil pump changes the oil pressure of output hydraulic pressure oil automatically according to the rotating speed (i.e. the gas car speed of a motor vehicle) of transmission shaft, thus make middle variable-speed shaft move axially to realize each gear the first oil inlet hole, the second oil inlet hole and the first spill port one to one, the UNICOM of the second spill port and disconnection.Such as in the middle of variable-speed shaft non rotating time and car transfixion time, middle variable-speed shaft keeps motionless position, each gear is the first oil inlet hole, the second oil inlet hole and the first spill port one to one, second spill port remains open state respectively, at this moment the hydraulic power output device that each gear is corresponding pressurizes without hydraulic oil, does not also just have power to export to transmission shaft through the corresponding hydraulic power output device of each gear.When automobile advances, by the oil-feed oil return of the second oil pump, automatically control gear, during car reversed, control the axial initial movable of middle variable-speed shaft by mechanical shifting fork structure and realize.In addition, when needs transferring power, hydraulic oil enters hydraulic power output device, and the first oil pump return opening is closed and to hydraulic power output device pressurization, hydraulic power output device by hydraulic oil, fixed plate, floating slice, friction between connecting sheet by power by gear transmission to transmission shaft.
As preferably, hydraulic pressure automatic control of transmission of the present invention, the number of forward gear input gear is 5.
As preferably, hydraulic pressure automatic control of transmission of the present invention, fixed plate is connected with transmission shaft respectively by spline with floating slice, and described connecting sheet is connected with output gear by spline.
The above is only the preferred embodiment of the present invention; be not limited to the present invention; should be understood that; for those skilled in the art; under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (3)
1. a hydraulic pressure automatic shift control device, it is characterized in that: comprise input shaft, transmission shaft, input gear and the output gear corresponding to input gear, described input gear comprises a reverse gear input gear and at least one forward gear input gear, and input gear is fixedly installed on input shaft, described output gear is connected on transmission shaft by hydraulic power output device, intermediate gear is provided with between described reverse gear input gear and corresponding input gear, described intermediate gear is meshed to reverse gear input gear and the output gear corresponding with reverse gear input gear respectively, described forward gear input gear is meshed with corresponding output shelves gear respectively, the outer side surface of described input shaft is also provided with protuberance, the below of described protuberance is provided with the first oil pump, described protuberance can contact with the first oily delivery side of pump thus drive the first oil pump to operate, middle variable-speed shaft is provided with in described transmission shaft, oil inlet and oil return axle is also provided with in described middle variable-speed shaft, forward gear oil inlet passage is provided with in described oil inlet and oil return axle, reverse gear oil inlet passage and drainback passage, described forward gear oil inlet passage is communicated with the first oily delivery side of pump respectively by oil pipe with the oil inlet passage that reverses gear, described drainback passage is communicated with by the input end of oil pipe with the first oil pump, the both sides of described output gear offer containing groove respectively, described hydraulic power output device sealing is arranged in containing groove, hydraulic power output device comprises the fixed plate be arranged in parallel, connecting sheet and floating slice, fixed plate is connected with transmission shaft respectively with floating slice, connecting sheet is connected with output gear, on the sidewall of described transmission shaft, the position of corresponding each hydraulic power output device is respectively equipped with the first oil inlet hole and the first spill port, described first oil inlet hole and the first spill port communicate with containing groove respectively, the position of correspondence first oil inlet hole of described oil inlet and oil return axle is provided with the second oil inlet hole, described second oil inlet hole is corresponding with the first oil inlet hole, and the second oil inlet hole of corresponding forward gear input gear communicates with forward gear oil inlet passage, second oil inlet hole of corresponding reverse gear input gear communicates with the oil inlet passage that reverses gear, the position of correspondence first spill port of oil inlet and oil return axle is provided with the second spill port, described second spill port is corresponding with the first spill port, and the second spill port communicates with drainback passage, correspondence first oil inlet hole of described middle variable-speed shaft and the position of the first spill port offer attachment hole respectively, described attachment hole is for being communicated with the first oil inlet hole and the second oil inlet hole, or for being communicated with the first spill port and the second spill port, and the position distribution of attachment hole makes middle variable-speed shaft in the process axially moved from left to right, each first oil inlet hole is communicated with the second corresponding oil inlet hole respectively successively, each first spill port is communicated with the second corresponding spill port respectively successively accordingly simultaneously, and have simultaneously and only have first oil inlet hole to be communicated with the second oil inlet hole, described hydraulic pressure automatic shift control device also comprises the second oil pump and mechanical shifting fork structure, described second oil pump is arranged on transmission shaft, and the second oily delivery side of pump is connected with middle variable-speed shaft, second oil pump moves axially in transmission shaft for driving middle variable-speed shaft, in the middle of described mechanical shifting fork structure controls when being used for automobile starting, variable-speed shaft does axial initial movable.
2. hydraulic pressure automatic shift control device according to claim 1, is characterized in that: the number of described forward gear input gear is 5.
3. hydraulic pressure automatic shift control device according to claim 1, it is characterized in that: described fixed plate is connected with transmission shaft respectively by spline with floating slice, described connecting sheet is connected with output gear by spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510786888.0A CN105240524B (en) | 2015-11-16 | 2015-11-16 | Hydraulic pressure automatic control of transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510786888.0A CN105240524B (en) | 2015-11-16 | 2015-11-16 | Hydraulic pressure automatic control of transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105240524A true CN105240524A (en) | 2016-01-13 |
| CN105240524B CN105240524B (en) | 2017-06-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510786888.0A Expired - Fee Related CN105240524B (en) | 2015-11-16 | 2015-11-16 | Hydraulic pressure automatic control of transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105240524B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1616853A (en) * | 2004-08-24 | 2005-05-18 | 吉林大学 | Double clutch type automatic gearbox |
| US20090143182A1 (en) * | 2007-11-29 | 2009-06-04 | Thomas Steven G | Transfer Case for a Motor Vehicle Powertrain |
| CN202251840U (en) * | 2011-09-21 | 2012-05-30 | 长沙中传机械有限公司 | Hydraulic transmission gear box with clutch part adopting gap sealing structure |
| CN102797767A (en) * | 2011-05-23 | 2012-11-28 | 肖合作 | Integrated flywheel and clutch drive mechanism |
| CN202597543U (en) * | 2012-04-17 | 2012-12-12 | 杭州发达齿轮箱集团有限公司 | Limiting mechanism of high-power clutch return spring |
| EP2149724B1 (en) * | 2007-05-23 | 2013-05-15 | Nabtesco Corporation | Reduction gear device |
| CN103206496A (en) * | 2013-04-17 | 2013-07-17 | 范巨新 | Automatic transmission capable of transmitting power by aid of shaft and plungers |
| CN205207644U (en) * | 2015-11-16 | 2016-05-04 | 张庆法 | Hydraulic pressure automatic control derailleur |
-
2015
- 2015-11-16 CN CN201510786888.0A patent/CN105240524B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1616853A (en) * | 2004-08-24 | 2005-05-18 | 吉林大学 | Double clutch type automatic gearbox |
| EP2149724B1 (en) * | 2007-05-23 | 2013-05-15 | Nabtesco Corporation | Reduction gear device |
| US20090143182A1 (en) * | 2007-11-29 | 2009-06-04 | Thomas Steven G | Transfer Case for a Motor Vehicle Powertrain |
| CN102797767A (en) * | 2011-05-23 | 2012-11-28 | 肖合作 | Integrated flywheel and clutch drive mechanism |
| CN202251840U (en) * | 2011-09-21 | 2012-05-30 | 长沙中传机械有限公司 | Hydraulic transmission gear box with clutch part adopting gap sealing structure |
| CN202597543U (en) * | 2012-04-17 | 2012-12-12 | 杭州发达齿轮箱集团有限公司 | Limiting mechanism of high-power clutch return spring |
| CN103206496A (en) * | 2013-04-17 | 2013-07-17 | 范巨新 | Automatic transmission capable of transmitting power by aid of shaft and plungers |
| CN205207644U (en) * | 2015-11-16 | 2016-05-04 | 张庆法 | Hydraulic pressure automatic control derailleur |
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| Publication number | Publication date |
|---|---|
| CN105240524B (en) | 2017-06-16 |
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Granted publication date: 20170616 Termination date: 20171116 |