CN200995613Y - Multi-sectional gearshift of tractor - Google Patents
Multi-sectional gearshift of tractor Download PDFInfo
- Publication number
- CN200995613Y CN200995613Y CN 200720017090 CN200720017090U CN200995613Y CN 200995613 Y CN200995613 Y CN 200995613Y CN 200720017090 CN200720017090 CN 200720017090 CN 200720017090 U CN200720017090 U CN 200720017090U CN 200995613 Y CN200995613 Y CN 200995613Y
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- gear
- speed
- main transformer
- grade
- speed change
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Abstract
A multi-speed device for a tractor comprises a gearbox, which adjusts a rotation speed output by a power device of the tractor under the control of an operating device. The multi-speed device is characterized in that an input axle (6), a first axle (7), a second axle (8) and an output axle (90 are equipped in parallel in the gearbox; the gearbox comprises a gear shift device (2), which is connected to the power device of the tractor via the input axle (6) to conduct a steering adjustment, a main shifting device (3), which is connected to the gear shift device (2) via the first axle (7) to adjust a rotation speed output by the gear shift device (2), and an auxiliary shifting device (4), which is connected to the main shifting device (3) via the second axle (8) to adjust a rotation speed output by the main shifting device (3), which is then sent out through the output axle (9).
Description
Technical field
The utility model relates to a kind of driving device of trac., especially relates to a kind of multi-stage transmission device of tractor of adjusting the trac. output speed.
Background technology
At present, it is a kind of very general technology with the several work function that realizes trac. that trac. is adjusted the output of trac. rotating speed by speed-changing mechanism, speed change and break-in function in order to realize trac. in most gear box of tractor, can in the casing of change speed gear box, be provided with the combination of the speed change of a plurality of gears and change gear realize the speed change and the break-in function of trac., this has just caused the change speed gear box inner gear too much, speed-changing mechanism is too complicated, can make that also the casing of change speed gear box is too huge, the gear that provides also may not satisfy the needs of trac. in various conditions distinguishingly and special operation fully, and the operation traverse is excessive when gear-change operation, operating difficulties, the use that this has limited trac. has influenced the normal construction operation of trac..
Summary of the invention
Technical problem to be solved in the utility model has provided a kind of multi-stage transmission device of tractor, and the gear that it provides has satisfied the needs of trac. operation fully, and little in the gear-change operation traverse, easy to operate.
For solving the problems of the technologies described above, the technical solution of the utility model is: multi-stage transmission device of tractor, be included in the change speed gear box that operating control control is adjusted the rotating speed of tractor dynamic power device output down, the parallel input shaft that is provided with in the gear box, primary shaft, second and output shaft, described change speed gear box comprises by input shaft and is connected the shift transmission of adjusting so that rotating speed is commutated with the tractor dynamic power device, be connected with shift transmission with the main transformer quick-mounting that the shift transmission output speed is carried out high low speed adjustment by primary shaft and put, be connected with putting with the main transformer quick-mounting that output speed carries out high low speed adjustment after the secondary speed-changing device of output shaft output so that the main transformer quick-mounting is put by second.
As a kind of improvement, described shift transmission comprises D Drive driving gear fixing successively on the described input shaft and retreats a grade driving gear, described primary shaft overlaps successively and is equiped with D Drive driving gear ingear D Drive ring gear and retreats a grade ring gear, and described shift transmission also comprises and is arranged in the gearbox body respectively and retreats grade driving gear and retreat a grade ring gear ingear idle pulley; Also be provided with on the described primary shaft and can control endwisely slipping of lower edge primary shaft at operating control to select with the D Drive ring gear or to retreat the synchromesh unit that turns to that grade ring gear rotates synchronously.
As further improvement, described main transformer quick-mounting is put and is comprised main transformer speed fourth gear driving gear, main transformer speed third speed drive gear, main transformer speed second gear driving gear and the one grade of driving gear of main transformer speed that is set in successively on the described primary shaft, be fixed with successively on described second with main transformer speed fourth gear driving gear ingear main transformer speed fourth gear ring gear, with main transformer speed third speed drive gear ingear main transformer speed third gear ring gear, with main transformer speed second gear driving gear ingear main transformer speed second gear ring gear and with one grade of ring gear of one grade of driving gear ingear main transformer speed of main transformer speed; Also be respectively equipped with on the described primary shaft and can control endwisely slipping of lower edge primary shaft at operating control to select and main transformer speed fourth gear driving gear or the synchronous main transformer speed three fourth gear synchromesh units that rotate of main transformer speed third speed drive gear and selection and one grade of driving gear of main transformer speed or the synchronous main transformer speed one second gear synchromesh unit that rotates of main transformer speed second gear driving gear.
As further improvement, described secondary speed-changing device comprises that being fixed with secondary speed change second gear driving gear, one grade of driving gear of secondary speed change and cover on described second successively is equiped with secondary speed change fourth gear driving gear, secondary speed change third speed drive gear; On the described output shaft successively cover be equiped with the secondary speed change second gear of secondary speed change second gear driving gear ingear ring gear, with the secondary one grade of ring gear of speed change of one grade of driving gear ingear of secondary speed change and be fixed with the secondary speed change fourth gear of secondary speed change fourth gear driving gear ingear ring gear, with the secondary speed change third gear of secondary speed change third speed drive gear ingear ring gear; Described output shaft also is provided with the secondary speed change one second gear shifter collar that endwisely slips and rotate synchronously with secondary speed change second gear ring gear and one grade of ring gear of secondary speed change to select that can control the lower edge output shaft at operating control; Described second also is provided with the secondary speed change three fourth gear shifter collars that endwisely slip and rotate synchronously with secondary speed change third speed drive gear and secondary speed change fourth gear driving gear to select that can control second of lower edge at operating control.
As further improvement, shift transmission, main transformer quick-mounting are put with secondary speed-changing device and are respectively equipped with operating control.
The multi-stage transmission device of tractor of technique scheme, owing to be to have adopted to be included in the change speed gear box that operating control control is adjusted the rotating speed of tractor dynamic power device output down, change speed gear box comprises by input shaft and is connected the shift transmission of adjusting so that rotating speed is commutated with the tractor dynamic power device, be connected with shift transmission with the main transformer quick-mounting that the shift transmission output speed is carried out high low speed adjustment by primary shaft and put, be connected the main transformer quick-mounting is put output speed carries out high low speed adjustment after the secondary speed-changing device of output shaft output with putting with the main transformer quick-mounting by second, the rotating speed adjustment that the rotating speed of trac. being exported by three sections transmission systems commutates, the gear that provides has satisfied the needs of trac. operation fully, and the gear-change operation traverse is little, and is easy to operate.Adopt shift transmission to be connected with the input shaft of change speed gear box, carry out the rotating speed adjustment again after making rotating speed turn to adjustment earlier, gear is clear, and is easy to operate.The main transformer quick-mounting that employing can be exported four rotating speeds is put with the secondary speed-changing device of four rotating speeds and is connected cooperation with shift transmission, can make trac. retreat shelves through 16 D Drives of output after the adjustment of this multi-stage transmission device and 16, increased the gear of trac. greatly, make its operating speed that advances in 2.65～33.81km/h scope, can carry out 16 grades of speed changes, satisfied the needs in various conditions distinguishingly and the special operation fully.And shift transmission, main transformer quick-mounting can be put with secondary speed-changing device and be arranged in the casing, to reduce the volume of change speed gear box greatly, make speed change compact more.Adopt shift transmission, main transformer quick-mounting to put with secondary speed-changing device and be respectively equipped with operating control, the gear-change operation traverse is little, and is easy to operate.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is further described.
Accompanying drawing is the structure principle chart of multi-stage transmission device of tractor of the present utility model.
The specific embodiment
As shown in drawings, multi-stage transmission device of tractor, comprise be arranged on the engine installation that constitutes by engine assembly 1 and clutch assembly 11 on the tractor body, with clutch assembly 11 bonded assembly change speed gear boxs and change speed gear box operating control, change speed gear box the rotating speed of trac. output can be commutated under operating control control and height is adjusted, parallel input shaft 6, primary shaft 7, second spool 8 and the output shaft 9 of being provided with in gear box.Change speed gear box comprises the shift transmission 2 that can commutate and adjust rotating speed, put 3 with the main transformer quick-mounting that rotating speed is carried out high low speed adjustment, secondary speed-changing device 4, and shift transmission 2 is connected with the output of the clutch assembly 11 of tractor dynamic power device being commutated by the rotating speed of clutch assembly 11 outputs by input shaft 6 adjusts 2, the main transformer quick-mounting is put 3 and then is connected with shift transmission 2 so that shift transmission 2 output speeds are carried out high low speed adjustment by primary shaft 7,4 of secondary speed-changing devices are put 3 by second 8 with the main transformer quick-mounting and are connected so that the main transformer quick-mounting is put 3 output speeds and carry out high low speed adjustment, the rotating speed of engine installation output puts 3 through the commutation adjustment and the main transformer quick-mounting of gearbox gear-shift transmission system 2 like this, behind the high low speed adjustment of secondary speed-changing device 4 by output shaft 9 output variable speed casees, and can adopt input shaft 6 to stretch out gear box to be connected with tractor clutch's assembly, stretch out device ways of connecting such as gear box and trac. differential assembly with output shaft 9, so that trac. transmission compactness.Put 3 and the rotating speed adjustment that the rotating speed of trac. output is commutated of secondary speed-changing device 4 these three sections transmission systems by shift transmission 2, main transformer quick-mounting, the gear that provides has satisfied the needs of trac. operation fully, and the compact conformation of change speed gear box, gear shift actuating journey is little, and is easy to operate.
As shown in drawings, shift transmission 2 is included in and is fixed with D Drive driving gear 21 on the input shaft 6 successively and retreats grade driving gear 22, be equiped with D Drive driving gear 21 ingear D Drive ring gears 211 and retreat grade ring gear 221 and overlap successively, and shift transmission 2 also comprises and is arranged in the gearbox body respectively and retreats grade driving gear 22 and retreat grade ring gear 221 ingear idle pulleys 5 at primary shaft 7; Also sliding to be provided with on primary shaft 7 turns to synchromesh unit 23, change speed gear box operating control to control to turn to synchromesh unit 23 to rotate synchronously to realize that rotating speed to clutch assembly 11 outputs of engine installation advances or the adjustment of turning backward selecting with D Drive ring gear 211 or to retreat grade ring gear 221 along endwisely slipping of primary shaft 7.
As shown in drawings, the main transformer quick-mounting is put 3 and is comprised the main transformer speed fourth gear driving gear 31 that is set in successively on the primary shaft 7, main transformer speed third speed drive gear 32, main transformer speed second gear driving gear 33 and one grade of driving gear 34 of main transformer speed are fixed with on second 8 and main transformer speed fourth gear driving gear 31 ingear main transformers speed fourth gear ring gear 311 successively, with main transformer speed third speed drive gear 32 ingear main transformers speed third gear ring gear 321, with main transformer speed second gear driving gear 33 ingear main transformers speed second gear ring gear 331 and with one grade of ring gear 341 of one grade of driving gear 34 ingear main transformers speed of main transformer speed; On primary shaft 7, also slide and be provided with main transformer speed one second gear synchromesh unit 35 and main transformer speed three fourth gear synchromesh units 36, control by the change speed gear box operating control, main transformer speed three fourth gear synchromesh units 36 can rotate with main transformer speed fourth gear driving gear 31 or main transformer speed third speed drive gear 32 selecting synchronously along endwisely slipping of primary shaft 7, and main transformer speed one second gear synchromesh unit 35 can along primary shaft 7 endwisely slipping with select with one grade of driving gear 34 of main transformer speed or 33 rotations synchronously of main transformer speed second gear driving gear.
As shown in drawings, secondary speed-changing device 4 is included in and is fixed with secondary speed change second gear driving gear 41, one grade of driving gear 42 of secondary speed change on second 8 successively, and cover is equiped with secondary speed change fourth gear driving gear 43, secondary speed change third speed drive gear 44; And on output shaft 9 successively cover be equiped with the secondary speed change second gear of secondary speed change second gear driving gear 41 ingears ring gear 411, with the secondary one grade of ring gear 421 of speed change of one grade of driving gear 42 ingear of secondary speed change and be fixed with the secondary speed change fourth gear of secondary speed change fourth gear driving gear 43 ingears ring gear 431, with the secondary speed change third gear of secondary speed change third speed drive gear 44 ingears ring gear 441; And on output shaft 9, also slide and be provided with secondary speed change one second gear shifter collar 46, slide on second 8 and be provided with secondary speed change three fourth gear shifter collars 45, control by the change speed gear box operating control, secondary speed change one second gear shifter collar 46 can rotate with selection and secondary speed change second gear ring gear 411 or one grade of ring gear 421 of secondary speed change synchronously along endwisely slipping of output shaft 9, and secondary speed change three fourth gear shifter collars 45 can rotate with selection and secondary speed change third speed drive gear 44 or secondary speed change fourth gear driving gear 43 synchronously along second 8 endwisely slip.And, the shifter collar of secondary speed change one second gear shifter collar 46 and secondary speed change three fourth gear shifter collars 45 can adopt respectively on the output shaft 9 between secondary speed change second gear ring gear 411 and one grade of ring gear 421 of secondary speed change, between secondary speed change third speed drive gear 44 and secondary speed change fourth gear driving gear 43, be fixed with toothholder on second 8, slip cap is equipped with the tooth cover respectively on two toothholders, and at one grade of ring gear 421 of secondary speed change, secondary speed change second gear ring gear 411, secondary speed change third speed drive gear 44, extend respectively to be provided with near a side of toothholders with secondary speed change fourth gear driving gear 43 and overlap corresponding tooth hub with tooth, under the control of operating control, the tooth cover slides with each tooth hub interlock or throws off like this.
For the structure that can make gear box of tractor compact more, with convenient installation on tractor body, reduce the gear-change operation traverse simultaneously, shift transmission 2, the main transformer quick-mounting put 3 and secondary speed-changing device 4 adopt and be arranged in the casing, and, shift transmission 2, the main transformer quick-mounting put 3 and secondary speed-changing device 4 be respectively equipped with operating control, by at shift transmission 2, the gear-change operation that the main transformer quick-mounting is put in 3 adopts the commonplace synchromesh unit of application on the current automobile, and gear-change operation adopts the mode of shifter collar in secondary speed-changing device 4, makes flexible and convenient operation.
Shown in the accompanying drawing that the main transformer quick-mounting puts 3 and secondary speed-changing device 4 when exporting four gear multi-stage transmission device of tractor respectively, its drive path is:
D Drive: to turn to synchromesh unit 23 and 211 interlocks of D Drive ring gear, its drive path be input shaft 6 → D Drive driving gear 21 → D Drive ring gear 211 → turn to synchromesh unit 23 → primary shaft 7 by handling operating control, making;
Retreat shelves: turn to synchromesh unit 23 and retreat 221 interlocks of grade ring gear by handling operating control, making, its drive path is input shaft 6 → retreat grade driving gear a 22 → idle pulley 5 → retreat grade ring gear 221 → turn to synchromesh unit 23 → primary shaft 7.
The main transformer quick-mounting is put 3 exportable four rotating speed gears,
One grade: by handling operating control, make 34 interlocks of one grade of driving gear of a second gear synchromesh unit 35 and main transformer speed, and main transformer speed three fourth gear synchromesh units 36 are in disengaged condition, and its drive path is 341 → the second 8 of one grade of ring gears of one grade of driving gear 34 → main transformer speed of primary shaft 7 → one second gear synchromesh units 35 → main transformer speed;
Second gear: by handling operating control, make a second gear synchromesh unit 35 and 33 interlocks of main transformer speed second gear driving gear, and main transformer speed three fourth gear synchromesh units 36 are in disengaged condition, and its drive path is 331 → the second 8 of primary shaft 7 → one second gear synchromesh units 35 → main transformer speed second gear driving gear 33 → main transformer speed second gear ring gears;
Third gear: by handling operating control, make main transformer speed three fourth gear synchromesh units 36 and 32 interlocks of main transformer speed third speed drive gear, and a second gear synchromesh unit 35 is in disengaged condition, and its drive path is 321 → the second 8 of primary shaft 7 → main transformer speed three fourth gear synchromesh units 36 → main transformer speed third speed drive gear 32 → main transformer speed third gear ring gears;
Fourth gear: by handling operating control, make main transformer speed three fourth gear synchromesh units 36 and 31 interlocks of main transformer speed fourth gear driving gear, and a second gear synchromesh unit 35 is in disengaged condition, and its drive path is 311 → the second 8 of primary shaft 7 → main transformer speed three fourth gear synchromesh units 36 → main transformer speed fourth gear driving gear 31 → main transformer speed fourth gear ring gears.
Secondary speed-changing device 4 exportable four rotating speed gears,
One grade: by handling operating control, make secondary speed change one second gear shifter collar 46 and 421 interlocks of one grade of ring gear of secondary speed change, and secondary speed change three fourth gear shifter collars 45 are in disengaged condition, and its drive path is one grade of driving gear 42 of second 8 → secondary speed change → one grade of ring gear 421 of secondary speed change → secondary speed change one second gear shifter collar 46 → output shaft 9;
Second gear: by handling operating control, make secondary speed change one second gear shifter collar 46 and secondary speed change second gear ring gear 411 interlocks, and secondary speed change three fourth gear shifter collars 45 are in disengaged condition, and its drive path is second 8 → secondary speed change second gear driving gear 41 → secondary speed change second gear ring gear 411 → secondary speed change one second gear shifter collar 46 → output shaft 9;
Third gear: by handling operating control, make secondary speed change three fourth gear shifter collars 45 and secondary speed change third speed drive gear 44 interlocks, and secondary speed change one second gear shifter collar 46 is in disengaged condition, and its drive path is second 8 → secondary speed change three fourth gear shifter collars 45 → secondary speed change third speed drive gear 44 → secondary speed change third gear ring gear 441 → output shaft 9;
Fourth gear: by handling operating control, make secondary speed change three fourth gear shifter collars 45 and secondary speed change fourth gear driving gear 43 interlocks, and secondary speed change one second gear shifter collar 46 is in disengaged condition, and its drive path is second 8 → secondary speed change three fourth gear shifter collars 45 → secondary speed change fourth gear driving gear 43 → secondary speed change fourth gear ring gear 431 → output shaft 9.
Like this, through the commutation adjustment of shift transmission 2 forward-reverse gears, speed change adjustment and the further speed change adjustment of 4 four gears of secondary speed-changing device that the main transformer quick-mounting is put 3 four gears, make trac. have 16 D Drives and 16 and retreat shelves, the gear that is provided has satisfied the needs of trac. operation fully, and the compact conformation of change speed gear box, gear shift actuating journey is little, and is easy to operate.
Claims (5)
1, multi-stage transmission device of tractor, be included in the change speed gear box that operating control control is adjusted the rotating speed of tractor dynamic power device output down, it is characterized in that: the parallel input shaft (6) that is provided with in the gear box, primary shaft (7), second (8) and output shaft (9), described change speed gear box comprises by input shaft (6) and is connected the shift transmission of adjusting so that rotating speed is commutated (2) with the tractor dynamic power device, be connected with shift transmission (2) with the main transformer quick-mounting that shift transmission (2) output speed is carried out high low speed adjustment by primary shaft (7) and put (3), and put (3) by second (8) and main transformer quick-mounting and be connected that (3) output speed carries out high low speed adjustment after the secondary speed-changing device (4) of output shaft (9) output so that the main transformer quick-mounting is put.
2, multi-stage transmission device of tractor as claimed in claim 1, it is characterized in that: described shift transmission (2) comprises D Drive driving gear (21) fixing successively on the described input shaft (6) and retreats a grade driving gear (22), on the described primary shaft (7) successively cover be equiped with D Drive driving gear (21) ingear D Drive ring gear (211) and retreat a grade ring gear (221), described shift transmission (2) also comprises and is arranged in the gearbox body respectively and retreats a grade driving gear (22) and retreat a grade ring gear (221) ingear idle pulley (5); Also be provided with on the described primary shaft (7) can operating control control lower edge primary shaft (7) endwisely slip with select with D Drive ring gear (211) or retreat that a grade ring gear (221) rotates synchronously turn to synchromesh unit (23).
3, multi-stage transmission device of tractor as claimed in claim 1, it is characterized in that: described main transformer quick-mounting is put (3) and is comprised the main transformer speed fourth gear driving gear (31) that is sleeved on successively on the described primary shaft (7), main transformer speed third speed drive gear (32), main transformer speed second gear driving gear (33) and main transformer speed one grade of driving gear (34) are fixed with on described second (8) and main transformer speed fourth gear driving gear (31) ingear main transformer speed fourth gear ring gear (311) successively, with main transformer speed third speed drive gear (32) ingear main transformer speed third gear ring gear (321), with main transformer speed second gear driving gear (33) ingear main transformer speed second gear ring gear (331) and with main transformer speed one grade of driving gear (34) ingear main transformer speed one grade of ring gear (341); Also be respectively equipped with on the described primary shaft (7) and can control endwisely slipping of lower edge primary shaft (7) at operating control to select and main transformer speed fourth gear driving gear (31) or the synchronous main transformer speed three fourth gear synchromesh units (36) that rotate of main transformer speed third speed drive gear (32) and selection and main transformer speed one grade of driving gear (34) or the synchronous main transformer speed one second gear synchromesh unit (35) that rotates of main transformer speed second gear driving gear (33).
4, multi-stage transmission device of tractor as claimed in claim 1 is characterized in that: described secondary speed-changing device (4) comprises that being fixed with secondary speed change second gear driving gear (41), one grade of driving gear of secondary speed change (42) and cover on described second (8) successively is equiped with secondary speed change fourth gear driving gear (43), secondary speed change third speed drive gear (44); On the described output shaft (9) successively cover be equiped with the secondary speed change second gear ring gear (411) of secondary speed change second gear driving gear (41) ingear, with the secondary one grade of ring gear of speed change (421) of one grade of driving gear of secondary speed change (42) ingear and be fixed with the secondary speed change fourth gear ring gear (431) of secondary speed change fourth gear driving gear (43) ingear, with the secondary speed change third gear ring gear (441) of secondary speed change third speed drive gear (44) ingear; Described output shaft (9) also is provided with the secondary speed change one second gear shifter collar (46) that endwisely slips and rotate synchronously with secondary speed change second gear ring gear (411) and one grade of ring gear of secondary speed change (421) to select that can control lower edge output shaft (9) at operating control; Described second (8) also are provided with the secondary speed change three fourth gear shifter collars (45) that endwisely slip and rotate synchronously with secondary speed change third speed drive gear (44) and secondary speed change fourth gear driving gear (43) to select that can control lower edge second (8) at operating control.
5, as claim 1,2,3 or 4 described multi-stage transmission device of tractor, it is characterized in that: described shift transmission (2), main transformer quick-mounting put (3) and secondary speed-changing device (4) is respectively equipped with operating control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720017090 CN200995613Y (en) | 2007-01-11 | 2007-01-11 | Multi-sectional gearshift of tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200720017090 CN200995613Y (en) | 2007-01-11 | 2007-01-11 | Multi-sectional gearshift of tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200995613Y true CN200995613Y (en) | 2007-12-26 |
Family
ID=38994040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200720017090 Expired - Lifetime CN200995613Y (en) | 2007-01-11 | 2007-01-11 | Multi-sectional gearshift of tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200995613Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101974881A (en) * | 2010-09-10 | 2011-02-16 | 六安市振华汽车变速箱有限公司 | Gear box for road roller |
| CN104747663A (en) * | 2015-04-10 | 2015-07-01 | 浙江柳林农业机械股份有限公司 | Novel farming tractor |
| CN108506480A (en) * | 2018-05-24 | 2018-09-07 | 湖南农业大学 | The more gear speed change devices of agricultural tillage machine fluid drive |
| CN110116615A (en) * | 2019-05-28 | 2019-08-13 | 青岛大学 | A kind of heavy type commercial automobile parallel hybrid power speed changer |
-
2007
- 2007-01-11 CN CN 200720017090 patent/CN200995613Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101974881A (en) * | 2010-09-10 | 2011-02-16 | 六安市振华汽车变速箱有限公司 | Gear box for road roller |
| CN104747663A (en) * | 2015-04-10 | 2015-07-01 | 浙江柳林农业机械股份有限公司 | Novel farming tractor |
| CN108506480A (en) * | 2018-05-24 | 2018-09-07 | 湖南农业大学 | The more gear speed change devices of agricultural tillage machine fluid drive |
| CN108506480B (en) * | 2018-05-24 | 2024-01-16 | 湖南农业大学 | Automatic gear-shifting multi-gear speed-changing device for agricultural tillage machinery |
| CN110116615A (en) * | 2019-05-28 | 2019-08-13 | 青岛大学 | A kind of heavy type commercial automobile parallel hybrid power speed changer |
| CN110116615B (en) * | 2019-05-28 | 2023-12-29 | 青岛大学 | Parallel hybrid power transmission for heavy-duty commercial vehicle |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 261206 Beihai South Road, Fangzi District, Shandong, No. 192, No. Patentee after: LOVOL HEAVY INDUSTRY CO., LTD. Address before: 261200 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee before: Futian Leiwo International Heavy Industry Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20071226 |
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| EXPY | Termination of patent right or utility model |