A gearbox assembly and a tractor

Abstract

The application discloses a gearbox assembly and a tractor. The gearbox assembly comprises a main gearbox and a synchronous gearbox arranged on one side of the main gearbox. An axle and a bevel gear axle are arranged in parallel with the main gearbox. A first gear driving tooth and a second and third gear fixed tooth are arranged on the axle respectively. A reverse gear sliding tooth and a second and third gear sliding tooth are arranged on the bevel gear axle respectively. The second and third gear sliding tooth can be engaged with the second and third gear fixed tooth. A driving bevel gear is arranged on one end of the bevel gear axle. An input axle, a second axle, a rear drive input axle and a reverse axle are arranged in parallel with the synchronous gearbox. An input tooth is fixedly arranged on the input axle. A second axle input tooth, a reverse gear driving tooth, a first gear input tooth and a second and third gear double coupling tooth are arranged on the second axle respectively. A first gear reverse gear sliding tooth and a second and third gear sliding tooth are arranged on the rear drive input axle. A reverse gear driven tooth and a reverse gear output tooth are arranged on the reverse axle.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural machinery, in particular to a gearbox assembly and tractor. BACKGROUND

[0002] Gearbox, widely used in various vehicles, is a mechanism for changing the speed and torque from the engine, which can fix or shift the transmission ratio of the output shaft and the input shaft, and is usually composed of a transmission mechanism and a control mechanism, also known as a transmission.

[0003] The existing gearbox for tractors is subject to many reasons, mainly front-wheel drive or four-wheel drive, and the gearbox with rear-wheel drive and four-wheel drive is relatively less used. In addition, the gearbox with the existing structure can basically only realize synchronous driving in first gear and reverse gear when four-wheel driving, and cannot realize synchronous driving when engaged in second gear and third gear. Therefore, the gearbox with the existing structure generally has the problems of weak power and poor passability in high speed.

[0004] In summary, how to provide a gearbox assembly that can be synchronously driven in each gear, has better passability and stronger power, and a tractor comprising the gearbox assembly, has become a technical problem that technicians in the field need to solve urgently. SUMMARY

[0005] The technical problem solved by the present application is to provide a gearbox assembly that can be synchronously driven in each gear, has better passability and stronger power, and a tractor comprising the gearbox assembly.

[0006] The solution of the present application is realized as follows: the present application provides a gearbox assembly for a tractor, comprising a main gearbox and a synchronous gearbox arranged on one side of the main gearbox, the main gearbox is internally provided with a shaft and a bevel gear shaft arranged in parallel with the shaft, the shaft is provided with a first gear driving tooth and a second and third gear fixed tooth, the second and third gear fixed tooth is arranged on one side of the first gear driving tooth; the bevel gear shaft is further provided with a reverse gear sliding tooth and a second and third gear sliding tooth which can slide on the bevel gear shaft respectively, the reverse gear sliding tooth can engage with the first gear driving tooth, the second and third gear sliding tooth can engage with the second and third gear fixed tooth, one end of the bevel gear shaft is further provided with a driving bevel gear; the synchronous gearbox is further provided with an input shaft, a second shaft, a rear drive input shaft and a reverse gear shaft arranged in parallel with the input shaft, the input shaft is fixedly provided with an input tooth; the second shaft is provided with a second shaft input tooth, a reverse gear driving tooth, a first gear input tooth and a second and third gear double connection tooth respectively, the second shaft input tooth engages with the input tooth; the rear drive input shaft is further provided with a first gear reverse gear sliding tooth and a second and third gear sliding tooth which can slide on the rear drive input shaft, the first gear reverse gear sliding tooth can engage with the first gear input tooth, the second and third gear sliding tooth can engage with the second and third gear double connection tooth; the reverse gear shaft is further provided with a reverse gear driven tooth and a reverse gear output tooth, the reverse gear output tooth can engage with the first gear reverse gear sliding tooth and the second and third gear sliding tooth respectively. The gearbox assembly of this structure can realize four-wheel synchronous driving in the working process, compared with the existing structure of the gearbox assembly, it has the advantages of better passability and stronger power.

[0007] Another technical scheme of the present application is that, on the basis of the above, the synchronous gearbox is further provided with a first gear reverse gear shift fork shaft in parallel with the rear drive input shaft, the first gear reverse gear shift fork shaft is provided with a slidable first gear reverse gear shift fork.

[0008] Another technical scheme of the present application is that, on the basis of the above, one end of the first gear reverse gear shift fork is arranged on the first gear reverse gear sliding tooth, when the first gear reverse gear shift fork moves, it drives the first gear reverse gear sliding tooth to move, so as to realize the engagement and disengagement with the reverse gear output tooth.

[0009] Another technical scheme of the present application is that, on the basis of the above, the synchronous gearbox is further provided with a second and third gear shift fork shaft in parallel with the rear drive input shaft, the second and third gear shift fork shaft is provided with a slidable second and third gear shift fork

[0010] Another technical scheme of the present application is that, on the basis of the above, one end of the second and third gear shift fork is arranged on the second and third gear sliding tooth, when the second and third gear shift fork moves, it drives the second and third gear sliding tooth to move, so as to realize the engagement and disengagement with the reverse gear output tooth.

[0011] Another technical solution of the present invention is that, based on the above, the gearbox assembly further includes a connecting shaft, which is used to connect one end of the shaft and one end of the input shaft together.

[0012] Another technical solution of the present invention is that, based on the above, the main gearbox is further provided with a central bevel gear, the active bevel gear meshes with the central bevel gear, and drives the central bevel gear to rotate.

[0013] Another technical solution of the present invention is that, based on the above, the main gearbox is further provided with a central transverse shaft and a front drive half shaft arranged parallel to the central gearbox shaft. The central transverse shaft is provided with an end active tooth, and the front drive half shaft is provided with an end passive tooth that meshes with the end active tooth.

[0014] Furthermore, the present invention also proposes a tractor including a gearbox assembly, the gearbox assembly being the gearbox assembly described above.

[0015] Another technical solution of the present invention is that, based on the above, the tractor further includes a drive shaft, one end of which is connected to one end of the rear drive input shaft, and the other end of the drive shaft is provided with a rear drive axle. Attached Figure Description

[0016] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0017] Figure 1 This is a schematic diagram of the structure of a conventional tractor system according to the present invention;

[0018] Figure 2 for Figure 1 Schematic cross-sectional view of section A-A;

[0019] Figure 3 for Figure 1 A partial structural diagram of the internal structure of the main gearbox;

[0020] Figure 4 for Figure 1 A schematic diagram of the structure of the intermediate synchronous gearbox;

[0021] Figure 5 for Figure 4 Internal structure diagram;

[0022] Figure 6 for Figure 4 A schematic diagram of the internal structure from another perspective.

[0023] The correspondence between the reference numerals in the attached figures is as follows:

[0024] 1 main gearbox 2 synchronous gearbox 3 transmission shaft

[0025] 4 rear drive axle 5 first shaft 6 bevel shaft

[0026] 7 central cross shaft

[0027] 11 connecting shaft 12 first gear driving tooth 13 reverse gear sliding tooth

[0028] 14 second and third gear fixed tooth 15 second and third gear sliding tooth 16 driving bevel tooth

[0029] 17 central bevel tooth 18 terminal driving tooth 19 terminal driven tooth

[0030] 110 front drive half shaft 111 front drive wheel core 112 reverse gear input tooth

[0031] 113 reverse gear main tooth

[0032] 21 input shaft 22 input tooth 23 second shaft input tooth

[0033] 24 reverse gear driving tooth 25 first gear input tooth 26 second and third gear double coupling tooth

[0034] 27 second shaft 28 rear drive input shaft 29 first and reverse gear sliding tooth

[0035] 210 second and third gear sliding tooth 211 reverse gear driven tooth 212 reverse gear output tooth

[0036] 213 first and reverse gear shift fork 214 second and third gear shift fork 215 first and reverse gear shift fork shaft

[0037] 216 second and third gear and reverse gear shift fork shaft DETAILED DESCRIPTION

[0038] The present application will be described in detail below with reference to the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application. In addition, those skilled in the art can combine the features in the embodiments in the present document and the features in different embodiments according to the description in the present document.

[0039] The embodiments of the present application are as follows, please refer to Figures 1 to 6 The transmission system of the tractor and the gearbox assembly thereof are shown in the drawings, and the gearbox assembly specifically comprises a main gearbox 1 and a synchronous gearbox 2 arranged on the right side of the main gearbox 1, i.e. Figure 1 The main gearbox 1 is provided with a first shaft 5 and a bevel shaft 6 arranged in parallel with the first shaft 5, and the first shaft 5 is specifically provided with a first gear driving tooth 12 and a second and third gear fixed tooth 14, the second and third gear fixed tooth 14 is arranged on the side of the first gear driving tooth 12, i.e. Figure 1The left end of the bevel pinion 6 is also provided with a reverse sliding tooth 13 and a second / third sliding tooth 15 which can slide on the bevel pinion 6, the reverse sliding tooth 13 can engage with the first driving tooth 12, and the second / third sliding tooth 15 can engage with the second / third fixed tooth 14, one end of the bevel pinion 6, i.e. Figure 1 The left end of the bevel pinion 6 is also provided with a reverse sliding tooth 13 and a second / third sliding tooth 15 which can slide on the bevel pinion 6, the reverse sliding tooth 13 can engage with the first driving tooth 12, and the second / third sliding tooth 15 can engage with the second / third fixed tooth 14, one end of the bevel pinion 6, i.e. Figure 4 As shown, the second shaft 27 is provided with a second shaft input tooth 23, a reverse driving tooth 24, a first input tooth 25 and a second / third double tooth 26 from right to left, the second shaft input tooth 23 engages with the input tooth 22. In addition, the rear drive input shaft 28 is also provided with a first reverse sliding tooth 29 and a second / third sliding tooth 210 which can slide on the rear drive input shaft 28, the first reverse sliding tooth 29 can engage with the first input tooth 25, and the second / third sliding tooth 210 can engage with the second / third double tooth 26. The reverse shaft is also provided with a reverse driven tooth 211 and a reverse output tooth 212, the reverse output tooth 212 can engage with the first reverse sliding tooth 29 and the second / third sliding tooth 210 respectively. The gearbox assembly of this structure can realize four-wheel synchronous driving in the working process, compared with the existing structure of the gearbox assembly, it has the advantages of better passability and stronger power.

[0040] On the basis of the above embodiment, in another embodiment of the present application, as shown in the figure, Figures 4 to 6 As shown, the second shaft 27 is provided with a second shaft input tooth 23, a reverse driving tooth 24, a first input tooth 25 and a second / third double tooth 26 from right to left, the second shaft input tooth 23 engages with the input tooth 22. In addition, the rear drive input shaft 28 is also provided with a first reverse sliding tooth 29 and a second / third sliding tooth 210 which can slide on the rear drive input shaft 28, the first reverse sliding tooth 29 can engage with the first input tooth 25, and the second / third sliding tooth 210 can engage with the second / third double tooth 26. The reverse shaft is also provided with a reverse driven tooth 211 and a reverse output tooth 212, the reverse output tooth 212 can engage with the first reverse sliding tooth 29 and the second / third sliding tooth 210 respectively. The gearbox assembly of this structure can realize four-wheel synchronous driving in the working process, compared with the existing structure of the gearbox assembly, it has the advantages of better passability and stronger power.

[0041] On the basis of the above embodiment, in another embodiment of the present application, as shown in the figure, Figure 6 As shown, the second shaft 27 is provided with a second shaft input tooth 23, a reverse driving tooth 24, a first input tooth 25 and a second / third double tooth 26 from right to left, the second shaft input tooth 23 engages with the input tooth 22. In addition, the rear drive input shaft 28 is also provided with a first reverse sliding tooth 29 and a second / third sliding tooth 210 which can slide on the rear drive input shaft 28, the first reverse sliding tooth 29 can engage with the first input tooth 25, and the second / third sliding tooth 210 can engage with the second / third double tooth 26. The reverse shaft is also provided with a reverse driven tooth 211 and a reverse output tooth 212, the reverse output tooth 212 can engage with the first reverse sliding tooth 29 and the second / third sliding tooth 210 respectively. The gearbox assembly of this structure can realize four-wheel synchronous driving in the working process, compared with the existing structure of the gearbox assembly, it has the advantages of better passability and stronger power.

[0042] On the basis of the above embodiment, in another embodiment of the present application, as shown in the figure, Figure 6 As shown, the second shaft 27 is provided with a second shaft input tooth 23, a reverse driving tooth 24, a first input tooth 25 and a second / third double tooth 26 from right to left, the second shaft input tooth 23 engages with the input tooth 22. In addition, the rear drive input shaft 28 is also provided with a first reverse sliding tooth 29 and a second / third sliding tooth 210 which can slide on the rear drive input shaft 28, the first reverse sliding tooth 29 can engage with the first input tooth 25, and the second / third sliding tooth 210 can engage with the second / third double tooth 26. The reverse shaft is also provided with a reverse driven tooth 211 and a reverse output tooth 212, the reverse output tooth 212 can engage with the first reverse sliding tooth 29 and the second / third sliding tooth 210 respectively. The gearbox assembly of this structure can realize four-wheel synchronous driving in the working process, compared with the existing structure of the gearbox assembly, it has the advantages of better passability and stronger power.

[0043] On the basis of the above embodiment, in another embodiment of the present application, as shown in the figure, Figure 6As shown, one end of the second and third gear shift fork 214, i.e. the left end shown in the figure, is arranged on the second and third gear sliding tooth 210, when the second and third gear shift fork 214 moves along with the second and third gear shift fork shaft 216, the second and third gear sliding tooth 210 is driven to move on the rear drive input shaft 28, so as to realize the meshing and separation of the second and third gear sliding tooth 210 and the reverse gear output tooth 212

[0044] On the basis of the above embodiment, in another embodiment of the present application, as shown in Figure 1 As shown, the gearbox assembly further comprises a connecting shaft 11, the connecting shaft 11 is used for connecting one end of the shaft 5 and one end of the input shaft 21 together, so as to transmit power from the main gearbox 1 to the synchronous gearbox 2.

[0045] On the basis of the above embodiment, in another embodiment of the present application, as shown in Figure 2 As shown, the main gearbox 1 further comprises a central bevel gear 17, the driving bevel gear 16 meshes with the central bevel gear 17 and drives the central bevel gear 17 to rotate.

[0046] On the basis of the above embodiment, in another embodiment of the present application, as shown in Figure 2 As shown, the main gearbox 1 further comprises a central cross shaft 7 and a front drive half shaft 110 arranged in parallel with the central cross shaft, one end of the front drive half shaft 110 is provided with a front drive wheel core 111, the central cross shaft 7 is provided with a terminal driving tooth 18, and the front drive half shaft 110 is provided with a terminal driven tooth 19 meshing with the terminal driving tooth 18. In addition, as shown in Figure 3 As shown, the main gearbox 1 further comprises a movable reverse input tooth 112, the reverse input tooth 112 can mesh with the second and third gear fixed tooth 14, and one side of the reverse input tooth 112, i.e. the right side shown in the figure, is further provided with a reverse main tooth 113.

[0047] The gearbox assembly with the above structure can realize four-wheel synchronous driving in the working process of first gear, second gear, third gear and reverse gear, compared with the existing structure of the gearbox assembly, it has the advantages of better passability and stronger power.

[0048] In addition, the present application also provides a tractor comprising a gearbox assembly, the gearbox assembly is the gearbox assembly as described above.

[0049] On the basis of the above embodiment, in another embodiment of the present application, as shown in Figure 1 As shown, the tractor further comprises a transmission shaft 3, one end of the transmission shaft 3, i.e. the left end shown in the figure, is connected with one end of the rear drive input shaft 28, i.e. the right end shown in the figure, and the other end of the transmission shaft 3 is provided with a rear drive axle 4.

[0050] The tractor with the above structure has the advantages of the above-mentioned gearbox assembly.

[0051] The above merely provides the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A gearbox assembly for use in a tractor, characterized in that, It includes a main gearbox and a synchronous gearbox disposed on one side of the main gearbox. The main gearbox is provided with a shaft and a bevel gear shaft disposed parallel to the shaft. The shaft is provided with a first gear drive gear and a second and third gear fixed gear. The second and third gear fixed gear is disposed on one side of the first gear drive gear. The bevel gear shaft is also provided with a reverse gear sliding tooth and a second and third gear sliding tooth that can slide on the bevel gear shaft. The reverse gear sliding tooth can mesh with the first gear driving tooth, and the second and third gear sliding teeth can mesh with the second and third gear fixed teeth. One end of the bevel gear shaft is also provided with a driving bevel tooth. The synchronous gearbox also includes an input shaft, as well as a second shaft, a rear drive input shaft, and a reverse gear shaft arranged parallel to the input shaft. Input teeth are fixedly provided on the input shaft. The two shafts are respectively provided with a two-shaft input tooth, a reverse gear drive tooth, a first gear input tooth, and a second and third gear double tooth, and the two-shaft input tooth meshes with the input tooth; The rear drive input shaft is also provided with a first-gear reverse gear sliding tooth and a second-gear and third-gear sliding tooth that can slide on the rear drive input shaft. The first-gear reverse gear sliding tooth can mesh with the first-gear input tooth, and the second-gear and third-gear sliding tooth can mesh with the second-gear and third-gear double gear. The reverse gear shaft is also provided with a reverse gear driven tooth and a reverse gear output tooth, and the reverse gear output tooth can mesh with the first gear reverse gear sliding tooth and the second and third gear sliding teeth respectively.

2. The gearbox assembly according to claim 1, characterized in that, The synchronous gearbox is also equipped with a first-gear reverse gear shift fork shaft parallel to the rear drive input shaft, and the first-gear reverse gear shift fork shaft is equipped with a sliding first-gear reverse gear shift fork.

3. The gearbox assembly according to claim 2, characterized in that, One end of the first-gear reverse shift fork is placed on the first-gear reverse sliding tooth. When the first-gear reverse shift fork moves, it drives the first-gear reverse sliding tooth to move, thereby achieving engagement and disengagement with the reverse output tooth.

4. The gearbox assembly according to claim 3, characterized in that, The synchronous gearbox is also equipped with a second and third gear shift fork shaft parallel to the rear drive input shaft, and the second and third gear shift fork shaft is equipped with a sliding second and third gear shift fork.

5. The gearbox assembly according to claim 4, characterized in that, One end of the second and third gear shift fork is placed on the second and third gear sliding teeth. When the second and third gear shift fork moves, it drives the second and third gear sliding teeth to move, thereby realizing engagement and disengagement with the reverse gear output teeth.

6. The gearbox assembly according to claim 5, characterized in that, The gearbox assembly also includes a connecting shaft for connecting one end of the primary shaft and one end of the input shaft together.

7. The gearbox assembly according to claim 6, characterized in that, The main gearbox is also equipped with a central bevel gear, and the active bevel gear meshes with the central bevel gear and drives the central bevel gear to rotate.

8. The gearbox assembly according to claim 7, characterized in that, The main gearbox also includes a central transverse shaft and a front drive half shaft arranged parallel to the central transverse shaft. The central transverse shaft is provided with an end active tooth, and the front drive half shaft is provided with an end passive tooth that meshes with the end active tooth.

9. A tractor, comprising a gearbox assembly, characterized in that, The gearbox assembly is the gearbox assembly according to any one of claims 1 to 8.

10. The tractor according to claim 9, characterized in that, The tractor also includes a drive shaft, one end of which is connected to one end of the rear drive input shaft, and the other end of the drive shaft is provided with a rear drive axle.

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