CN212959743U - Tractor gearbox - Google Patents
Tractor gearbox Download PDFInfo
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- CN212959743U CN212959743U CN202021675186.8U CN202021675186U CN212959743U CN 212959743 U CN212959743 U CN 212959743U CN 202021675186 U CN202021675186 U CN 202021675186U CN 212959743 U CN212959743 U CN 212959743U
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Abstract
The utility model discloses a tractor gearbox relates to the transmission system field. The speed reducing mechanism adjusts the rotating speed output by an engine to four gears through a main speed changing mechanism, the auxiliary speed changing mechanism adjusts the rotating speed of the main speed changing mechanism to an auxiliary high gear, an auxiliary middle gear, an auxiliary low gear and a reverse gear, and the crawling gear mechanism adjusts the rotating speed of the auxiliary speed changing mechanism to an ascending gear and a descending gear, so that a 4 x (3+ R) x 2 gear transmission structure of a gearbox is realized. The speed reducing mechanism meets the requirements of farmland operation at various speeds and has various crawling gears.
Description
Technical Field
The utility model relates to a transmission system field especially relates to a tractor gearbox.
Background
With the further development of agricultural technology, the agricultural machinery matched with the agricultural machinery is more and more detailed in farmland operation. The tractor used for driving the 'mother machine' of the agricultural implement has to adapt to the change, and a plurality of gears are configured for selection. Most tractors have many gear combinations arranged in the case body in order to realize the functions of speed changing and gear shifting, so that the gear number is large, the speed changing mechanism is complex, the case body is huge, and the configured gears can not effectively meet the requirements of various special ground conditions and special farmland operation in the aspect of speed, thereby limiting the use space of the tractor.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a tractor gearbox is provided which satisfies the farmland operation demand of multiple speeds and has multiple crawling gears.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
a tractor gearbox, comprising:
the main speed change mechanism comprises a first-gear driving gear shaft, an intermediate shaft, a fourth-gear driving gear shaft, a sun gear shaft and an output shaft; the first gear driving gear shaft and the fourth gear driving gear shaft are coaxially arranged, and the intermediate shaft, the sun gear shaft and the output shaft are coaxially arranged.
The I keeps off and still overlaps to be equipped with II fender driving gears and III fender driving gears on the driving gear axle, the cover is equipped with I fender driven gear, II keep off driven gear, III keep off driven gear and IV fender driven gear on the jackshaft, I keeps off and is connected with first synchronizer between driven gear and the II fender driven gear, III keeps off and is connected with the second synchronizer between driving gear and the IV fender driving gear axle.
The auxiliary speed change mechanism comprises an auxiliary middle gear driving gear, an auxiliary low gear driving gear and a reverse gear driving gear, wherein the auxiliary middle gear driving gear, the auxiliary low gear driving gear and the reverse gear driving gear are sleeved on an IV gear driving gear shaft, a reverse gear driven gear, an auxiliary low gear driven gear and an auxiliary middle gear driven gear with a meshing sleeve are sleeved on a sun gear shaft, an auxiliary middle gear meshing sleeve assembly, a reverse gear meshing sleeve assembly and an idler gear are acted between the auxiliary middle gear driving gear and the auxiliary low gear driving gear, the reverse gear meshing sleeve assembly is acted on the reverse gear driven gear, and the idler gear is matched with the reverse gear driving gear and the reverse gear driven gear.
The crawling gear mechanism comprises a planet wheel, a planet wheel gear ring, a planet carrier and a gear shifting sleeve, wherein the planet wheel, the planet wheel gear ring, the planet carrier and the gear shifting sleeve are used for being matched with the sun gear shaft, and the gear shifting sleeve is used between the sun gear shaft and the output shaft.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the utility model provides a 24F + 8R's tractor gearbox, main variable speed configuration is from low to high 4 fender positions, and 3 keep off position and 1 reverse gear in the auxiliary transmission configuration height, have the fender of crawling after the auxiliary transmission, have solved the tractor practicality problem of lacking among the prior art.
In addition, the main gear shifting adopts the synchronizer to shift gears, and the gear shifting device has the advantages of short gear shifting time and smooth gear shifting. The auxiliary speed change and the reverse gear adopt the meshing sleeve to shift gears, and the characteristic of small gear shifting force is achieved.
The main transmission and the auxiliary transmission can meet various normal farmland operation requirements when the crawling gear is not used, the speed of the vehicle can be reduced to be extremely low when the crawling gear is used, and various slow operation spaces can be effectively filled.
The whole layout is reasonable, the structure is simple, 24 forward gears and 8 reverse gears are combined by using limited gears, the requirements of various farmland operations from low to high are effectively met, and the application range and the space of the tractor are expanded.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. Based on the embodiments only in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1, a tractor transmission includes a main transmission mechanism, an auxiliary transmission mechanism, and a crawler gear mechanism. The main gear mechanism comprises a first-gear driving gear shaft 10, an intermediate shaft 20, a fourth-gear driving gear shaft 30, a sun gear shaft 40 and an output shaft 50; the first-gear driving gear shaft 10 and the fourth-gear driving gear shaft 30 are coaxially arranged, and the intermediate shaft 20, the sun gear shaft 40 and the output shaft 50 are coaxially arranged; the transmission gear is characterized in that a second-gear driving gear 101 and a third-gear driving gear 102 are further sleeved on the first-gear driving gear shaft 10, a first-gear driven gear 201, a second-gear driven gear 202, a third-gear driven gear 203 and a fourth-gear driven gear 204 are sleeved on the intermediate shaft 20, a first synchronizer 1 is connected between the first-gear driven gear 201 and the second-gear driven gear 202, and a second synchronizer 2 is connected between the third-gear driving gear 102 and the fourth-gear driving gear shaft 30.
The auxiliary speed change mechanism comprises an auxiliary middle gear driving gear 301, an auxiliary low gear driving gear 302 and a reverse gear driving gear 303 which are sleeved on the IV-gear driving gear shaft 30, a reverse gear driven gear 403, an auxiliary low gear driven gear 402 and an auxiliary middle gear driven gear 401 with a meshing sleeve 7 which are sleeved on the sun gear shaft 40, an auxiliary middle gear meshing sleeve component 3 acting between the auxiliary middle gear driving gear 301 and the auxiliary low gear driving gear 302, a reverse gear meshing sleeve component 4 acting on the reverse gear driven gear 403 and an idler 5 which is matched with the reverse gear driving gear 303 and the reverse gear driven gear 403 to reverse gears;
in use, the auxiliary middle gear meshing sleeve assembly 3 is meshed with the auxiliary middle gear driving gear 301, and power is transmitted to the sun gear shaft 40 from the IV gear driving gear shaft 30 through the auxiliary middle gear meshing sleeve assembly 3, the auxiliary middle gear driving gear 301 and the auxiliary middle gear driven gear 401, so that auxiliary middle gear output is realized; the meshing sleeve 7 is meshed with the auxiliary low-gear driven gear 402, so that power is transmitted to the sun gear shaft 40 from the IV-gear driving gear shaft 30 through the auxiliary low-gear driving gear 302, the meshing sleeve 7 and the auxiliary low-gear driven gear 402, and auxiliary low-gear output is realized; the reverse gear meshing sleeve assembly 4 is meshed with the reverse gear driven gear 403, so that power is transmitted to the sun gear shaft 40 from the IV-gear driving gear shaft 30 through the reverse gear driving gear 303, the idler gear 5 and the reverse gear driven gear 403 to realize reverse gear output; the meshing sleeve 7 is meshed with the intermediate shaft 20, and then power is transmitted to the sun gear shaft 40 through the intermediate shaft 20, so that high-gear output is realized.
The crawler gear mechanism comprises planet wheels 404 cooperating with said sun gear shaft 40, a planet wheel annulus 405, a planet carrier 406, and a shifting collar 6 acting between the sun gear shaft 40 and the output shaft 50. Power is input from the sun gear shaft 40 and is combined with the output shaft 50 through the planet gear 404, the gear ring, the planet carrier 406 and the gear shifting sleeve 6 to realize crawling output; the combination of the gear shifting sleeve 6, the sun gear shaft 40 and the output shaft 50 realizes the direct output of the crawling high gear.
In summary, the speed reduction mechanism adjusts the rotation speed output by the engine M to four gears through the main transmission mechanism, the auxiliary transmission mechanism adjusts the rotation speed of the main transmission mechanism to an auxiliary high gear, an auxiliary middle gear, an auxiliary low gear and a reverse gear, and the creep gear mechanism adjusts the rotation speed of the auxiliary transmission mechanism to an upshift gear and a downshift gear. Therefore, a 4 x (3+ R) x 2 gear transmission structure of the gearbox is realized, and 24 forward gears and 8 reverse gears are combined, as shown below (→ representing that the former drives the latter to transmit):
one, 24 forward gears
1. Crawling low 1 gear:
at this time, the first synchronizer 1 engages with the i-stage driven gear 201, and the sleeve 7 engages with the sub-low-stage driven gear 402. The transmission process is as follows: engine M → i stage drive gear shaft 10 → i stage driven gear 201 → intermediate shaft 20 → iv stage driven gear 204 → iv stage drive gear shaft 30 → sub-low stage drive gear 302 → sub-low stage driven gear 402 → sun gear shaft 40 → planetary gear 404 → planetary gear ring 405 → carrier 406 → shift sleeve 6 → output shaft 50
2. Crawling low gear 2:
at this time, the first synchronizer 1 engages with the second-speed driven gear 202, and the sleeve 7 engages with the sub-low-speed driven gear 402. The transmission process is as follows: engine M → i stage drive gear shaft 10 → ii stage drive gear 101 → ii stage driven gear 202 → intermediate shaft 20 → iv stage driven gear 204 → iv stage drive gear shaft 30 → sub-low stage drive gear 302 → sub-low stage driven gear 402 → sun gear shaft 40 → planet gear 404 → planet gear ring 405 → planet carrier 406 → shift sleeve 6 → output shaft 50
3. Crawling low 3 gears:
at this time, the second synchronizer 2 is engaged with the iii-stage drive gear 102, and the sleeve 7 is engaged with the sub-low-stage driven gear 402. The transmission process is as follows: engine M → i stage drive gear shaft 10 → iii stage drive gear 102 → iii stage driven gear 203 → intermediate shaft 20 → iv stage driven gear 204 → iv stage drive gear shaft 30 → sub-low stage drive gear 302 → sub-low stage driven gear 402 → sun gear shaft 40 → planet gear 404 → planet gear ring 405 → planet carrier 406 → shift sleeve 6 → output shaft 50
4. Crawling low 4 gears:
at this time, the second synchronizer 2 is engaged with the iv-stage drive gear shaft 30, and the sleeve 7 is engaged with the sub-low-stage driven gear 402. The transmission process is as follows: engine M → i stage drive gear shaft 10 → iv stage drive gear shaft 30 → sub-low stage drive gear 302 → sub-low stage driven gear 402 → sun gear shaft 40 → planetary gear 404 → planetary gear ring 405 → planetary carrier 406 → shift sleeve 6 → output shaft 50
5. 1 gear in crawling:
at this time, the first synchronizer 1 is engaged with the i-range driven gear 201, and the sub-middle-range engaging sleeve assembly 3 is engaged with the sub-middle-range driving gear 301. The transmission process is as follows: engine M → i stage drive gear shaft 10 → i stage driven gear 201 → intermediate shaft 20 → iv stage driven gear 204 → iv stage drive gear shaft 30 → auxiliary middle stage drive gear 301 → auxiliary middle stage driven gear 401 → sun gear shaft 40 → planet gear 404 → planet gear ring 405 → planet carrier 406 → shift sleeve 6 → output shaft 50
6. Crawling middle gear 2:
at this time, the first synchronizer 1 is engaged with the ii-speed driven gear 202, and the sub-middle-speed meshing sleeve assembly 3 is engaged with the sub-middle-speed driving gear 301. The transmission process is as follows: engine M → i stage drive gear shaft 10 → ii stage drive gear 101 → ii stage driven gear 202 → intermediate shaft 20 → iv stage driven gear 204 → iv stage drive gear shaft 30 → sub-intermediate stage drive gear 301 → sub-intermediate stage driven gear 401 → sun gear shaft 40 → planet gear 404 → planet gear ring 405 → planet carrier 406 → shift sleeve 6 → output shaft 50
7. 3 gears in crawling:
at this time, the second synchronizer 2 is engaged with the iii-gear drive gear 102, and the sub-middle gear engaging sleeve assembly 3 is engaged with the sub-middle gear drive gear 301. The transmission process is as follows: engine M → i stage drive gear shaft 10 → iii stage drive gear 102 → iii stage driven gear 203 → intermediate shaft 20 → iv stage driven gear 204 → iv stage drive gear shaft 30 → counter intermediate stage drive gear 301 → counter intermediate stage driven gear 401 → sun gear shaft 40 → planet gear 404 → planet gear ring 405 → planet carrier 406 → shift sleeve 6 → output shaft 50
8. 4 gears in crawling:
at this time, the second synchronizer 2 is engaged with the iv-stage drive gear shaft 30, and the sub-middle stage meshing sleeve assembly 3 is engaged with the sub-middle stage drive gear 301. The transmission process is as follows: engine M → i stage drive gear shaft 10 → iv stage drive gear shaft 30 → secondary middle stage drive gear 301 → secondary middle stage driven gear 401 → sun gear shaft 40 → planet gear 404 → planet gear ring 405 → planet carrier 406 → shift sleeve 6 → output shaft 50
9. Climbing to a high 1 gear:
at this time, the first synchronizer 1 is engaged with the i-stage driven gear 201, and the sleeve 7 is engaged with the counter shaft 20. The transmission process is as follows: engine M → i gear drive gear shaft 10 → i gear driven gear 201 → intermediate shaft 20 → sun gear shaft 40 → planet gear 404 → planet gear ring 405 → planet carrier 406 → shift sleeve 6 → output shaft 50
10. Climbing a high gear 2:
at this time, the first synchronizer 1 is engaged with the second-speed driven gear 202, and the sleeve 7 is engaged with the counter shaft 20. The transmission process is as follows: engine M → i stage drive gear shaft 10 → ii stage drive gear 101 → ii stage driven gear 202 → intermediate shaft 20 → sun gear shaft 40 → planet gear 404 → planet gear ring 405 → planet carrier 406 → shift sleeve 6 → output shaft 50
11. Climbing a high gear 3:
at this time, the second synchronizer 2 is engaged with the iii-gear drive gear 102, and the sleeve 7 is engaged with the intermediate shaft 20. The transmission process is as follows: engine M → i gear drive gear shaft 10 → iii gear drive gear 102 → iii gear driven gear 203 → intermediate shaft 20 → sun gear shaft 40 → planet gear 404 → planet gear ring 405 → planet carrier 406 → shift collar 6 → output shaft 50
12. Climbing a high gear 4:
at this time, the second synchronizer 2 is engaged with the iv-stage drive gear shaft 30, and the sleeve 7 is engaged with the counter shaft 20. The transmission process is as follows: engine M → i-speed drive gear shaft 10 → iv-speed drive gear shaft 30 → iv-speed driven gear 204 → intermediate shaft 20 → sun gear shaft 40 → planet gear 404 → planet gear ring 405 → planet carrier 406 → shift sleeve 6 → output shaft 50
13. Direct low 1 gear:
at this time, the first synchronizer 1 is engaged with the i-stage driven gear 201, the engaging sleeve 7 is engaged with the sub-low stage driven gear 402, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i stage drive gear shaft 10 → i stage driven gear 201 → intermediate shaft 20 → iv stage driven gear 204 → iv stage drive gear shaft 30 → sub-low stage drive gear 302 → sub-low stage driven gear 402 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
14. Direct low 2 shift:
at this time, the first synchronizer 1 is engaged with the second-speed driven gear 202, the sleeve 7 is engaged with the sub-low-speed driven gear 402, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i stage drive gear shaft 10 → ii stage drive gear 101 → ii stage driven gear 202 → intermediate shaft 20 → iv stage driven gear 204 → iv stage drive gear shaft 30 → sub-low stage drive gear 302 → sub-low stage driven gear 402 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
15. Direct low 3 shift:
at this time, the second synchronizer 2 is engaged with the iii-gear drive gear 102, the engaging sleeve 7 is engaged with the sub-low-gear driven gear 402, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i stage drive gear shaft 10 → iii stage drive gear 102 → iii stage driven gear 203 → intermediate shaft 20 → iv stage driven gear 204 → iv stage drive gear shaft 30 → sub-low stage drive gear 302 → sub-low stage driven gear 402 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
16. Direct low 4 shift:
at this time, the second synchronizer 2 is engaged with the iv-stage drive gear shaft 30, the engaging sleeve 7 is engaged with the sub-low-stage driven gear 402, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i-speed drive gear shaft 10 → iv-speed drive gear shaft 30 → sub-low-speed drive gear 302 → sub-low-speed driven gear 402 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
17. Direct neutral 1 gear:
at this time, the first synchronizer 1 is engaged with the i-speed driven gear 201, the sub-middle-speed meshing sleeve assembly 3 is engaged with the sub-middle-speed driving gear 301, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i stage driving gear shaft 10 → i stage driven gear 201 → intermediate shaft 20 → iv stage driven gear 204 → iv stage driving gear shaft 30 → auxiliary middle stage driving gear 301 → auxiliary middle stage driven gear 401 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
18. Directly carrying out 2-gear:
at this time, the first synchronizer 1 is engaged with the ii-speed driven gear 202, the sub-middle-speed engaging sleeve assembly 3 is engaged with the sub-middle-speed driving gear 301, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i stage drive gear shaft 10 → ii stage drive gear 101 → ii stage driven gear 202 → intermediate shaft 20 → iv stage driven gear 204 → iv stage drive gear shaft 30 → sub-intermediate stage drive gear 301 → sub-intermediate stage driven gear 401 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
19. Directly carrying out 3-gear neutralization:
at this time, the second synchronizer 2 is engaged with the iii-gear drive gear 102, the sub-middle gear engaging sleeve assembly 3 is engaged with the sub-middle gear drive gear 301, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i stage drive gear shaft 10 → iii stage drive gear 102 → iii stage driven gear 203 → intermediate shaft 20 → iv stage driven gear 204 → iv stage drive gear shaft 30 → sub-intermediate stage drive gear 301 → sub-intermediate stage driven gear 401 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
20. Directly carrying out 4-gear neutralization:
at this time, the second synchronizer 2 is engaged with the iv-stage drive gear shaft 30, the sub-middle-stage meshing sleeve assembly 3 is engaged with the sub-middle-stage drive gear 301, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i-speed drive gear shaft 10 → iv-speed drive gear shaft 30 → auxiliary middle-speed drive gear 301 → auxiliary middle-speed driven gear 401 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
21. Direct high 1 gear:
at this time, the first synchronizer 1 is engaged with the i-stage driven gear 201, the meshing sleeve 7 is engaged with the counter shaft 20, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i gear driving gear shaft 10 → i gear driven gear 201 → intermediate shaft 20 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
22. Direct high 2 shift:
at this time, the first synchronizer 1 is engaged with the ii-stage driven gear 202, the engaging sleeve 7 is engaged with the counter shaft 20, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i stage driving gear shaft 10 → ii stage driving gear 101 → ii stage driven gear 202 → intermediate shaft 20 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
23. Direct high 3 shift:
at this time, the second synchronizer 2 is engaged with the iii-range driving gear 102, the engaging sleeve 7 is engaged with the intermediate shaft 20, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i-speed drive gear shaft 10 → iii-speed drive gear 102 → iii-speed driven gear 203 → intermediate shaft 20 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
24. Direct high 4 shift:
at this time, the second synchronizer 2 is engaged with the iv-stage drive gear shaft 30, the engaging sleeve 7 is engaged with the counter shaft 20, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i-speed drive gear shaft 10 → iv-speed drive gear shaft 30 → iv-speed driven gear 204 → intermediate shaft 20 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
Second, 8 reverse gears
1. Reverse crawling 1 gear:
at this time, the first synchronizer 1 is engaged with the i-speed driven gear 201, and the reverse engagement sleeve assembly 4 is engaged with the reverse driven gear 403. The transmission process is as follows: the engine M → the i-speed drive gear shaft 10 → the i-speed driven gear 201 → the intermediate shaft 20 → the iv-speed driven gear 204 → the iv-speed drive gear shaft 30 → the reverse drive gear 303 → the idler 5 → the reverse driven gear 403 → the sun gear shaft 40 → the planet gear 404 → the planet gear ring 405 → the planet carrier 406 → the shift sleeve 6 → the output shaft 50
2. Reverse crawling 2 gear:
the first synchronizer 1 now meshes with the second-gear driven gear 202, and the reverse sleeve assembly 4 meshes with the reverse driven gear 403. The transmission process is as follows: the engine M → the i stage drive gear → the ii stage drive gear 101 → the ii stage driven gear 202 → the intermediate shaft 20 → the iv stage driven gear 204 → the iv stage drive gear shaft 30 → the reverse stage drive gear 303 → the idler gear 5 → the reverse stage driven gear 403 → the sun gear shaft 40 → the planet gear 404 → the planet gear ring 405 → the planet carrier 406 → the shift sleeve 6 → the output shaft 50
3. Reverse crawling 3 gear:
at this time, the second synchronizer 2 is engaged with the iii-gear drive gear 102, and the reverse gear engaging sleeve assembly 4 is engaged with the reverse gear driven gear 403. The transmission process is as follows: the engine M → the i-speed drive gear shaft 10 → the iii-speed drive gear 102 → the iii-speed driven gear 203 → the intermediate shaft 20 → the iv-speed driven gear 204 → the iv-speed drive gear shaft 30 → the reverse drive gear 303 → the idler gear 5 → the reverse driven gear 403 → the sun gear shaft 40 → the planet gear 404 → the planet gear ring 405 → the planet carrier 406 → the shift sleeve 6 → the output shaft 50
4. Reverse crawling 4 gear:
at this time, the second synchronizer 2 is engaged with the iv-gear drive gear shaft 30, and the reverse sleeve assembly 4 is engaged with the reverse driven gear 403. The transmission process is as follows: engine M → i gear drive gear shaft 10 → iv gear drive gear shaft 30 → reverse gear drive gear 303 → idler 5 → reverse gear driven gear 403 → sun gear shaft 40 → planet gear 404 → planet gear ring 405 → planet carrier 406 → shift sleeve 6 → output shaft 50
5. Reverse direct 1 gear:
at this time, the first synchronizer 1 is engaged with the i-speed driven gear 201, the reverse gear engaging sleeve assembly 4 is engaged with the reverse gear driven gear 403, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i stage driving gear shaft 10 → i stage driven gear 201 → intermediate shaft 20 → iv stage driven gear 204 → iv stage driving gear shaft 30 → reverse stage driving gear 303 → idler 5 → reverse stage driven gear 403 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
6. Reverse direct 2 gear:
at this time, the first synchronizer 1 is engaged with the ii-speed driven gear 202, the reverse gear engaging sleeve assembly 4 is engaged with the reverse gear driven gear 403, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i stage driving gear shaft 10 → ii stage driving gear 101 → ii stage driven gear 202 → intermediate shaft 20 → iv stage driven gear 204 → iv stage driving gear shaft 30 → reverse stage driving gear 303 → idler gear 5 → reverse stage driven gear 403 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
7. Reverse direct 3 gear:
at this time, the second synchronizer 2 is engaged with the iii-gear drive gear 102, the reverse gear engaging sleeve assembly 4 is engaged with the reverse gear driven gear 403, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i stage drive gear shaft 10 → iii stage drive gear 102 → iii stage driven gear 203 → intermediate shaft 20 → iv stage driven gear 204 → iv stage drive gear shaft 30 → reverse stage drive gear 303 → idler gear 5 → reverse stage driven gear 403 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
8. Reverse direct 4 gear:
at this time, the second synchronizer 2 is engaged with the iv-stage drive gear shaft 30, the reverse sleeve assembly 4 is engaged with the reverse driven gear 403, and the shift sleeve is engaged with the sun gear shaft 40. The transmission process is as follows: engine M → i gear drive gear shaft 10 → iv gear drive gear shaft 30 → reverse gear drive gear 303 → idler 5 → reverse gear driven gear 403 → sun gear shaft 40 → shift sleeve 6 → output shaft 50
The above is only the preferred embodiment of the present invention, and any person can make some simple modifications, deformations and equivalent replacements according to the present invention, all fall into the protection scope of the present invention.
Claims (1)
1. A tractor gearbox, comprising:
the main speed change mechanism comprises a first-gear driving gear shaft (10), an intermediate shaft (20), a fourth-gear driving gear shaft (30), a sun gear shaft (40) and an output shaft (50); the transmission device comprises a first gear driving gear shaft (10), a second gear driving gear shaft (30), an intermediate shaft (20), a sun gear shaft (40) and an output shaft (50), wherein the first gear driving gear shaft and the second gear driving gear shaft are coaxially arranged;
the transmission gear mechanism is characterized in that a gear II driving gear (101) and a gear III driving gear (102) are further sleeved on the gear I driving gear shaft (10), a gear I driven gear (201), a gear II driven gear (202), a gear III driven gear (203) and a gear IV driven gear (204) are sleeved on the intermediate shaft (20), a first synchronizer (1) is connected between the gear I driven gear (201) and the gear II driven gear (202), and a second synchronizer (2) is connected between the gear III driving gear (102) and the gear IV driving gear shaft (30);
the auxiliary transmission mechanism comprises an auxiliary middle gear driving gear (301), an auxiliary low gear driving gear (302) and a reverse gear driving gear (303) which are sleeved on an IV gear driving gear shaft (30), a reverse gear driven gear (403), an auxiliary low gear driven gear (402) and an auxiliary middle gear driven gear (401) with a meshing sleeve (7) which are sleeved on a sun gear shaft (40), an auxiliary middle gear meshing sleeve component (3) acting between the auxiliary middle gear driving gear (301) and the auxiliary low gear driving gear (302), a reverse gear meshing sleeve component (4) acting on the reverse gear driven gear (403) and an idler gear (5) which is matched with the reverse gear driving gear (303) and the reverse gear driven gear (403) to reverse gears;
the crawling gear mechanism comprises a planet wheel (404), a planet wheel gear ring (405), a planet carrier (406) and a gear shifting sleeve (6), wherein the planet wheel (404), the planet wheel gear ring (405), the planet carrier (406) and the gear shifting sleeve are matched with the sun gear shaft (40) in action, and the gear shifting sleeve (6) acts between the sun gear shaft (40) and the output shaft (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021675186.8U CN212959743U (en) | 2020-08-12 | 2020-08-12 | Tractor gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021675186.8U CN212959743U (en) | 2020-08-12 | 2020-08-12 | Tractor gearbox |
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| Publication Number | Publication Date |
|---|---|
| CN212959743U true CN212959743U (en) | 2021-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021675186.8U Active CN212959743U (en) | 2020-08-12 | 2020-08-12 | Tractor gearbox |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685512A (en) * | 2021-09-08 | 2021-11-23 | 山东福尔沃农业装备股份有限公司 | Gearbox assembly with section power gear shifting function for tractor |
-
2020
- 2020-08-12 CN CN202021675186.8U patent/CN212959743U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685512A (en) * | 2021-09-08 | 2021-11-23 | 山东福尔沃农业装备股份有限公司 | Gearbox assembly with section power gear shifting function for tractor |
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