CN200949649Y - Speed-variation device for vehicle - Google Patents
Speed-variation device for vehicle Download PDFInfo
- Publication number
- CN200949649Y CN200949649Y CN 200620013334 CN200620013334U CN200949649Y CN 200949649 Y CN200949649 Y CN 200949649Y CN 200620013334 CN200620013334 CN 200620013334 CN 200620013334 U CN200620013334 U CN 200620013334U CN 200949649 Y CN200949649 Y CN 200949649Y
- Authority
- CN
- China
- Prior art keywords
- gear
- transmission
- output shaft
- vehicle
- motor
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Structure Of Transmissions (AREA)
Abstract
The utility model relates to a vehicle speed changing device, which comprises a clutch, a gearbox input shaft connected with the motor output shaft by the clutch, a gearbox output shaft meshing transmission with the gearbox input shaft through the transmission mechanism and a shifting conjugation device connecting the transmission mechanism and the gearbox output shaft. The shifting conjugation device is driven by a motor, which can realize the connecting of the transmission mechanism and the gearbox output shaft. The utility model is improved and re-structured based on existing mature manual transmission by the structure, which retains the advantages of original gear transmission of high transmission efficiency, compact space installation, light weight, low cost, easy manufacture and easy maintenance, which also realizes the automation in starting and shifting process, and has the same advantages with the AT on the manipulation convenience.
Description
[technical field]
The utility model relates to a kind of transmission of vehicle, particularly a kind of transmission of vehicle that utilizes the Electric Machine Control shifting of transmission.
[background technique]
At present, the automatic transmission of generally using on the automobile is mainly two big classes: hydraulic type automatic transmission (hydraulic type automatic transmission) and CVT (stepless speed variator).Automatic transmission can alleviate driver's burden according to pavement behavior automatic speed changing, bending moment in the process of automobile running, make the driver can effectively concentrate on noting the road surface situation.
But existing automatic transmission has design complexity, shortcomings such as manufacture process requirement is high, manufacture cost is high, maintenance expenses is high, oil consumption height, is unfavorable for the promotion and application of automatic transmission.Because the hydraulic type automatic transmission mainly is made up of fluid torque converter, planetary gear set and hydraulic control system, the mode by fluid power transmission and Gear combination realizes speed change, bending moment.This type of speed changer is especially under following several situations: Vehicle Speed is lower than 50KM/H or Transmission gear is in below 3 grades; Automotive brake is in running order down; Engine water temperature is lower than specified value, is generally 50-60 ℃; When motor is in idling mode; Fluid torque converter is in couple state, and pump impeller blade can make its flow at high speed by the inner fluid of disturbance fluid torque converter always, causes a large amount of energy losses, directly translates into the oil consumption height.
[model utility content]
Automatic transmission has the technical problem that design is complicated, manufacture process requirement is high, manufacture cost is high, maintenance expenses is high, oil consumption is high in the prior art in order to solve, and the utility model provides a kind of speed change gear of realizing gear shift control by motor.
The utility model solves in the prior art automatic transmission to have the technological scheme that technical problem adopted that design is complicated, manufacture process requirement is high, manufacture cost is high, maintenance expenses is high, oil consumption is high and be: a kind of transmission of vehicle is provided, and transmission of vehicle comprises: clutch; The gearbox input shaft that is connected with engine output shaft through clutch; Output shaft of gear-box by driving mechanism and gearbox input shaft engagement driving and be connected driving mechanism and the gear shift bonding apparatus of output shaft of gear-box, this gear shift bonding apparatus is by electric-motor-driving, to realize being connected of driving mechanism and output shaft.
According to the utility model one preferred embodiment, the gear shift bonding apparatus is direct sliding gear, clutch collar or synchronizer.
According to the utility model one preferred embodiment, driving mechanism comprises: be fixed on the input shaft constant mesh gear on the gearbox input shaft; Jack shaft by jack shaft constant mesh gear and the engagement of input shaft constant mesh gear; Be fixed on the jack shaft shifting gear on the jack shaft; With jack shaft shifting gear engagement and the output shaft shifting gear that is connected with output shaft of gear-box by the gear shift bonding apparatus.
According to the utility model one preferred embodiment, speed change gear is two-axis speed change gear.
According to the utility model one preferred embodiment, be provided with in the clutch and be used for connecting the epicyclic gear system of engine output shaft and transmission input shaft and the epicyclic gear system parts are braked so that the power of motor is delivered to the arrestment mechanism of transmission input shaft through epicyclic gear system.
According to the utility model one preferred embodiment, epicyclic gear system comprises: the gear ring that connects engine output shaft; With planet gear meshed in the gear ring; What connect transmission input shaft presses circumference evenly layout and rotational fixation planet carrier thereon by planetary pinion; And the sun gear that is meshed with planetary pinion; Arrestment mechanism comprises: with co-axially fixed brake disc of sun gear and brake calipers that brake disc is braked.
According to the utility model one preferred embodiment, epicyclic gear system comprises: the sun gear that connects engine output shaft; The planetary pinion that is meshed with sun gear and evenly arrange and rotational fixation planet carrier thereon by circumference by planetary pinion; Be meshed with planetary pinion and be connected the gear ring of transmission input shaft; Arrestment mechanism comprises: with co-axially fixed brake disc of planet carrier and brake calipers that brake disc is braked.
According to the utility model one preferred embodiment, brake calipers is by motor or hydraulic mechanism transmission.
According to the utility model one preferred embodiment, motor is a stepper motor, transmission of vehicle is connected with the vehicle central control unit, and the vehicle central control unit responds tach signal, engine rotational speed signal or the throttle depth signal of the output shaft of gear-box that is imported into by sensor with the control step motor.
According to the utility model one preferred embodiment, the power supply system of stepper motor is cut off in vehicle central control unit response warning sign.
The advantage of above-mentioned transmission of vehicle is: can improve on the basis of the manual transmission of technology maturation or re-construct, its kept original gear speed changer transmission efficiency height, installing space compactness, in light weight, cost is low, easy manufacturing, safeguard advantages such as easy, and realized the automation of starting, gearshift procedure, in handiness, possess the advantage of AT.In addition, the shift binding device of controlling each stepper motor transmission by the vehicle central control unit can make the time of switching between each gear identical.
[description of drawings]
Fig. 1 is the utility model transmission of vehicle one embodiment's a structural representation;
Fig. 2 is another embodiment's of model utility transmission of vehicle a structural representation.
[embodiment]
Below in conjunction with drawings and Examples the utility model is elaborated.
Referring to Fig. 1, Fig. 1 is the utility model transmission of vehicle one embodiment's a structural representation.In the present embodiment, the triple axle speed changer based on five forward gearss, one reverse gear carries out exemplary description to the utility model.Be provided with in the speed changer in the present embodiment by the transmission input shaft 21 of clutch 1 with motor (not shown) engagement driving; The jack shaft 22 that be arranged in parallel with gearbox input shaft 21, jack shaft constant mesh gear 221 and input shaft constant mesh gear gearbox input shaft 21 on 211 engagements of jack shaft 22 by being fixed thereon, in addition, also be fixed with one grade of gear 222 of jack shaft, secondary gear of intermediate shaft 223, third-speed gear of intermediate shaft 224, counter 5th gear 225 and countershaft reverse gear 226 on the jack shaft 22; Respectively with one grade of gear 232 of output shaft, output shaft intermediate gear 233, output shaft three-range transmission 234, five grades of gears 235 of output shaft of above-mentioned jack shaft shifting gear 222-225 engagement; And output shaft reverse gear 236 wherein is meshed with countershaft reverse gear 226 by the reverse idler gear 241 that is connected on through bearing housing on the reverse gear shaft 24.Above-mentioned output shaft shifting gear 222-226 is by on bearing (not shown) the socket output shaft of gear-box 23, and is connected on the output shaft 23 by clutch collar 31,32,33; Establish three stepper motors 51,52,53 in addition in the utility model speed changer, so that three clutch collars of transmission 31,32,33 are respectively controlled 3 grades, 4 grades respectively, 1 grade, 2 grades, 5 grades, the switching motion of reverse gear.
In addition, in the present embodiment, clutch 1 comprises: import engine power the epicyclic gear system 11 of gearbox input shaft 21 into, epicyclic gear system 11 comprises the gear ring 111 that is connected with motor; With planet gear meshed 112 in the gear ring 111; Be connected to gearbox input shaft 21 and evenly arrange also rotational fixation planet carrier 113 thereon and the sun gear 115 that meshes with planetary pinion 112 by planetary pinion 112 circumference; The coaxial brake calipers 17 that is fixed on the brake disc 15 on the sun gear 115 and brake disc 15 is braked.Reach the transmission and the cut-out of power by control to epicyclic gear system 11.When brake calipers 17 unclamped, the gear ring of epicyclic gear system 11 111 drove planetary pinions 112 and sun gear 115 and rotates around separately axle, and planet carrier 113 no-outputs are " separation " state of ordinary clutch, not transferring power.Otherwise during the locked brake disc 15 of brake calipers 17, sun gear 115 is static, and planet carrier 113 rotates, and drives gearbox input shaft 21 and rotate, and is " joint " state of ordinary clutch.Brake calipers 17 skids between brake calipers 17 and the brake disc 15 when the not locked brake disc 15 of braking, is equivalent to " half-clutch " state of ordinary clutch, but the power of transmitting portions motor still at this moment.Brake calipers 17 can carry out transmission by fluid drive mechanism or stepper motor.
The working state of the utility model transmission of vehicle is as follows:
One grade: stepper motor 52 work drive clutch collar 32 and move to right, mesh with the gear ring that engages of one grade of gear 232 of output shaft, and then drive output shaft of gear-box 23, speed changer is gone into one grade, brake calipers 17 begins braking (the not locked brake disc 15 of brake calipers 17 this moment in the clutch 1, skid between brake calipers 17 and the brake disc 15), motor begins transferring power, until reaching the setting speed of a motor vehicle, brake calipers 17 locked brake discs 15, rely on the rising of engine speed and the speed of a motor vehicle is further accelerated this moment, and power transmission line is: motor-gear ring 111-〉planet carrier 113-〉input shaft constant mesh gear 211-〉jack shaft constant mesh gear 221-〉jack shaft 22-〉one grade of gear 222-of jack shaft〉one grade of gear 232-of output shaft〉clutch collar 32-〉output shaft of gear-box 23.
Second gear: when the speed of a motor vehicle is elevated to need go into second gear the time, brake calipers 17 unclamps in the clutch 1, cut off the transmission of power of motor, stepper motor 52 work drive clutch collar 32 and move to left, speed changer is gone into second gear, brake calipers 17 begins braking (the not locked brake disc 15 of brake calipers this moment in the clutch 1, skid between brake calipers 17 and the brake disc 15), motor begins transferring power, until reaching the setting speed of a motor vehicle, brake calipers 17 locked brake discs 15, rely on the rising of engine speed and the speed of a motor vehicle is further accelerated this moment, and power transmission line is: motor-gear ring 111-〉planet carrier 113-〉input shaft constant mesh gear 211-〉jack shaft constant mesh gear 221-〉jack shaft 22-〉secondary gear of intermediate shaft 223-〉output shaft intermediate gear 233-〉clutch collar 32-〉output shaft of gear-box 23.
Third gear: when the speed of a motor vehicle is elevated to need go into third gear the time, brake calipers 17 unclamps in the clutch 1, cut off the transmission of power of motor, stepper motor 51 work drive clutch collar 31 and move to right, speed changer is gone into third gear, brake calipers 17 begins braking (the not locked brake disc 15 of brake calipers 17 this moment in the clutch 1, skid between brake calipers 17 and the brake disc 15), motor begins transferring power, until reaching the setting speed of a motor vehicle, brake calipers 17 locked brake discs 15, rely on the rising of engine speed and the speed of a motor vehicle is further accelerated this moment, and power transmission line is: motor-gear ring 111-〉planet carrier 113-〉input shaft constant mesh gear 211-〉jack shaft constant mesh gear 221-〉jack shaft 22-〉third-speed gear of intermediate shaft 224-〉output shaft three-range transmission 234-〉clutch collar 31-〉output shaft of gear-box 23;
Fourth gear: when the speed of a motor vehicle is elevated to need go into fourth gear the time, brake calipers 17 unclamps in the clutch 1, cut off the transmission of power of motor, stepper motor 51 work drive clutch collar 31 and move to left, speed changer is gone into fourth gear, brake calipers 17 begins braking (the not locked brake disc 15 of brake calipers 17 this moment in the clutch 1, skid between brake calipers 17 and the brake disc 15), motor begins transferring power, until reaching the setting speed of a motor vehicle, brake calipers 17 locked brake discs 15, rely on the rising of engine speed and the speed of a motor vehicle is further accelerated this moment, power transmission line is: motor-gear ring 111-〉planet carrier 113-〉input shaft constant mesh gear 211-〉clutch collar 31-〉output shaft of gear-box 23, this is a direct high.
Five grades: when the speed of a motor vehicle is elevated to need go into five grades the time, brake calipers 17 unclamps in the clutch 1, cut off the transmission of power of motor, stepper motor 53 work drive clutch collar 33 and move to right, speed changer is gone into five grades, brake calipers 17 begins braking (the not locked brake disc 15 of brake calipers 17 this moment in the clutch 1, skid between brake calipers 17 and the brake disc 15), motor begins transferring power, until reaching the setting speed of a motor vehicle, brake calipers 17 locked brake discs 15, rely on the rising of engine speed and the speed of a motor vehicle is further accelerated this moment, and power transmission line is: motor-gear ring 111-〉planet carrier 113-〉input shaft constant mesh gear 211-〉jack shaft constant mesh gear 221-〉jack shaft 22-〉counter 5th gear 225-〉five grades of gear 234-of output shaft〉clutch collar 33-〉output shaft of gear-box 23.
Reverse gear: when speed changer need enter reverse gear, brake calipers 17 is a releasing orientation in the clutch 1, stepper motor 33 work drive clutch collar 33 and move to left, make output shaft reverse gear 236 speed changers go into reverse gear, brake calipers 17 begins braking (the not locked brake disc 15 of brake calipers 17 this moment in the clutch 1, skid between brake calipers 17 and the brake disc 15), motor begins transferring power, until reaching the setting speed of a motor vehicle, brake calipers 17 locked brake discs 15, power transmission line is: motor-gear ring 111-〉planet carrier 113-〉input shaft constant mesh gear 211-〉jack shaft constant mesh gear 221-〉jack shaft 22-〉226-of countershaft reverse gear〉reverse idler gear 241-〉output shaft reverse gear 236-〉clutch collar 33-〉output shaft of gear-box 23.
Neutral gear: in the utility model, two schemes that realize neutral gear are arranged.1: brake calipers 17 unclamps in the clutch, is equivalent to " separation " state of clutch, and motor can not transferring power, and speed changer is in " neutral gear " state; 2: with the joint gear ring combination of any shifting gear, speed changer is not in " neutral gear " state to each clutch collar in the speed changer.
The motor of the transmission clutch collar of the present utility model and the brake calipers of transmission brake disc can be connected with the central unit of automobile, the tach signal of sensor sensing output shaft, engine rotational speed signal or throttle depth signal, central unit responds above-mentioned signal each motor is controlled, so that adopt different gears under different situations.
Speed changer of the present utility model can also link with alarms and security systems for automobiles, when anti-theft device detect illegally open the door or other warning information after, central unit sends instruction and makes speed changer place " neutral gear " state and cut off motor power, catch fire even beat like this, can not make automobile starting, play inner antitheft effect.
Referring to Fig. 2, Fig. 2 is the structural representation in conjunction with another embodiment of speed change gear of the utility model clutch, in the present embodiment, clutch 6 comprises the epicyclic gear system 61 that engine power is delivered to transmission input shaft, sun gear 613 in the epicyclic gear system 61 is connected with engine output shaft, gear ring 611 is connected with transmission input shaft, and circumference arranges that evenly also rotational fixation has planetary pinion 612 on the planet carrier 614, the planet carrier 614 coaxial brake discs 65 that are fixed with, 67 pairs of brake discs 65 of brake calipers are braked.When brake calipers 67 unclamped, sun gear 613 drove planetary pinions 612 and rotates, and gear ring 611 no-outputs are " separation " state of ordinary clutch, not transferring power.Otherwise, during the locked brake disc 65 of brake calipers 67, promptly locked planet carrier 614, and each planetary pinion in the planet carrier 614 drive gear rings 611 and rotate, and are " joint " state of ordinary clutch.Brake calipers 67 skids between brake calipers 67 and the brake disc 65 when the not locked brake disc 65 of braking, is equivalent to " half-clutch " state of ordinary clutch, but the power of transmitting portions motor still at this moment.Also be provided with stepper motor in the speed change gear shown in Figure 2 with the transmission clutch collar.
In addition, the utility model is equally applicable to the transmission for vehicles that any type of direct slide teeth is wheeled, engage shell type or the gear shift of synchronizer formula except the transmission for vehicles that is applicable to the clutch collar gear shift.
The utility model can improve on the basis of the manual transmission of prior art maturation and re-construct, kept original gear speed changer transmission efficiency height, installing space compactness, in light weight, cost is low, easy manufacturing, safeguard advantages such as easy; And realized the automation of starting, gearshift procedure, in handiness, possess the advantage of AT.
Above-mentioned detailed description is that example has been carried out exemplary description to the utility model with reference to triple axle and twin-shaft transmission only, but those skilled in the art obviously can expect the utility model is applied to all realize other form of gear shift by mobile bonding apparatus speed changer.
Claims (10)
1. transmission of vehicle, described transmission of vehicle comprises: clutch; The gearbox input shaft that is connected with engine output shaft through described clutch; By driving mechanism and the output shaft of gear-box of described gearbox input shaft engagement driving and the gear shift bonding apparatus that is connected described driving mechanism and described output shaft of gear-box, it is characterized in that: described gear shift bonding apparatus is by electric-motor-driving, to realize being connected of driving mechanism and output shaft.
2. transmission of vehicle according to claim 1 is characterized in that: described gear shift bonding apparatus is direct sliding gear, clutch collar or synchronizer.
3. transmission of vehicle according to claim 1 is characterized in that: described driving mechanism comprises: be fixed on the input shaft constant mesh gear on the described gearbox input shaft;
Jack shaft by jack shaft constant mesh gear and the engagement of described input shaft constant mesh gear;
Be fixed on the jack shaft shifting gear on the described jack shaft;
With engagement of described jack shaft shifting gear and the output shaft shifting gear that is connected with described output shaft of gear-box by described gear shift bonding apparatus.
4. transmission of vehicle according to claim 1 is characterized in that: described speed change gear is two-axis speed change gear.
5. require any described transmission of vehicle according to aforesaid right, it is characterized in that: be provided with in the described clutch and be used for connecting the epicyclic gear system of described engine output shaft and described transmission input shaft and described epicyclic gear system parts are braked so that the power of described motor is delivered to the arrestment mechanism of described transmission input shaft through described epicyclic gear system.
6. transmission of vehicle according to claim 5 is characterized in that: described epicyclic gear system comprises: the gear ring that connects described engine output shaft; With planet gear meshed in the described gear ring; Connect evenly arranging and rotational fixation planet carrier thereon by circumference of described transmission input shaft by described planetary pinion; And the sun gear that is meshed with described planetary pinion; Described arrestment mechanism comprises: with co-axially fixed brake disc of described sun gear and brake calipers that described brake disc is braked.
7. transmission of vehicle according to claim 5 is characterized in that: described epicyclic gear system comprises: the sun gear that connects described engine output shaft; The planetary pinion that is meshed with described sun gear and evenly arrange and rotational fixation planet carrier thereon by circumference by described planetary pinion; Be meshed with described planetary pinion and be connected the gear ring of described transmission input shaft; Described arrestment mechanism comprises: with co-axially fixed brake disc of described planet carrier and brake calipers that described brake disc is braked.
8. according to claim 6 or 7 described transmission of vehicle, it is characterized in that: described brake calipers is by motor or hydraulic mechanism transmission.
9. transmission of vehicle according to claim 1, it is characterized in that: described motor is a stepper motor, described transmission of vehicle is connected with the vehicle central control unit, and described vehicle central control unit responds tach signal, engine rotational speed signal or the throttle depth signal of the described output shaft of gear-box that is imported into by sensor to control described stepper motor.
10. transmission of vehicle according to claim 9 is characterized in that: the power supply system of described stepper motor is cut off in described vehicle central control unit response warning sign.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620013334 CN200949649Y (en) | 2006-03-31 | 2006-03-31 | Speed-variation device for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620013334 CN200949649Y (en) | 2006-03-31 | 2006-03-31 | Speed-variation device for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200949649Y true CN200949649Y (en) | 2007-09-19 |
Family
ID=38892192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620013334 Expired - Fee Related CN200949649Y (en) | 2006-03-31 | 2006-03-31 | Speed-variation device for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200949649Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235880B (en) * | 2008-02-26 | 2010-06-09 | 张耀新 | Manual/automatic integrated speed-changer |
| CN103591166A (en) * | 2013-11-11 | 2014-02-19 | 深圳市悦成汽车技术有限公司 | Clutch and vehicle speed-change assembly |
| CN103703286A (en) * | 2011-07-07 | 2014-04-02 | 丰田自动车株式会社 | Vehicle and method for controlling vehicle |
| CN108202496A (en) * | 2017-09-30 | 2018-06-26 | 湖北财圣机械科技有限公司 | Convenient for the screw oil expeller of speed governing |
-
2006
- 2006-03-31 CN CN 200620013334 patent/CN200949649Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235880B (en) * | 2008-02-26 | 2010-06-09 | 张耀新 | Manual/automatic integrated speed-changer |
| CN103703286A (en) * | 2011-07-07 | 2014-04-02 | 丰田自动车株式会社 | Vehicle and method for controlling vehicle |
| CN103703286B (en) * | 2011-07-07 | 2015-08-12 | 丰田自动车株式会社 | The controlling method of vehicle and vehicle |
| CN103591166A (en) * | 2013-11-11 | 2014-02-19 | 深圳市悦成汽车技术有限公司 | Clutch and vehicle speed-change assembly |
| CN103591166B (en) * | 2013-11-11 | 2016-11-23 | 深圳市悦成汽车技术有限公司 | Clutch and vehicle speed variation assembly |
| CN108202496A (en) * | 2017-09-30 | 2018-06-26 | 湖北财圣机械科技有限公司 | Convenient for the screw oil expeller of speed governing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201980080U (en) | Electric vehicle motive power assembly | |
| CN103174815B (en) | The double-clutch automatic gearbox of band reverse gear used for electric vehicle and parking locking mechanism | |
| CN100425870C (en) | Planetary gear type stepless variable speed drive system | |
| CN1014543B (en) | Torque converter disconnect and by-pass clutch structure for automatic mechanical transmission | |
| CN101936388A (en) | DCT transmission utilizing a two axis chain | |
| CN200949649Y (en) | Speed-variation device for vehicle | |
| CN101929530B (en) | Three-gear gear shifting mechanism for small mobile robot | |
| CN203627679U (en) | Manual multiple-shift transmission | |
| CN102434636A (en) | Automatic gear box with double input shafts | |
| CN200992144Y (en) | Electric-vehicle drive system | |
| CN103982605A (en) | Shift mechanism and double-clutch combined transmission and vehicle using shift mechanism | |
| CN2934756Y (en) | Clutch and vehicle shift device using same | |
| CN101907150B (en) | Double-clutch automatic transmission without reverse gear shaft | |
| CN203796868U (en) | Gear-shifting mechanism, car adopting same and double-clutch combined transmission | |
| CN2746205Y (en) | Vehicle mechanical speed transforming transmission | |
| CN1389360A (en) | Speed variator for mixedly driven automobile | |
| CN2674201Y (en) | Mechanical-power, shift-gears speed-changing box | |
| CN201322083Y (en) | Double motor traveling transmission case for hydraulic excavator | |
| CN103032545B (en) | Dual-clutch automatic hydraulic clutch | |
| CN2723773Y (en) | Automobile gear box device | |
| CN105757188A (en) | Multifunctional output gearbox | |
| CN2743623Y (en) | Hydraulic planetary automatic variable drive | |
| KR20210047136A (en) | A power transmission apparatus for vehicle | |
| CN1734129A (en) | Hydraulic planetary automatic stepless gearbox | |
| CN1651800A (en) | Transfer case with overdrive/underdrive shifting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070919 Termination date: 20110331 |