CN218031295U - Rear central transmission assembly - Google Patents
Rear central transmission assembly Download PDFInfo
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- CN218031295U CN218031295U CN202222347198.3U CN202222347198U CN218031295U CN 218031295 U CN218031295 U CN 218031295U CN 202222347198 U CN202222347198 U CN 202222347198U CN 218031295 U CN218031295 U CN 218031295U
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- bevel gear
- small bevel
- gear shaft
- differential
- gearbox shell
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Abstract
The utility model provides a back central authorities transmission assembly has solved the problem that prior art back central authorities transmission assembly structure is complicated, be unfavorable for inspection, popularization. The rear central transmission assembly comprises a gearbox shell, wherein a small bevel gear shaft extending along the horizontal direction is arranged in the gearbox shell, a small bevel gear is fixed at the front end of the small bevel gear shaft, and a front driving output gear in key fit with the small bevel gear shaft is sleeved at the middle section of the small bevel gear shaft; the differential mechanism assembly is arranged on one side of the small bevel gear, a large bevel gear meshed with the small bevel gear is arranged on the differential mechanism assembly, and the axial direction of the large bevel gear is vertical to the axial direction of the small bevel gear shaft; differential bearing blocks are symmetrically arranged on two sides of the gearbox shell and are connected to the differential assembly through adjusting nuts. Overall speaking, the utility model discloses a back central authorities transmission assembly simple structure, convenient to use can both raise the efficiency effectively when installation and maintenance, and convenient to popularize and use has fine practicality.
Description
Technical Field
The utility model relates to a tractor gearbox technical field especially indicates a simple structure, convenient to use's back central authorities transmission assembly.
Background
In a common wheel tractor structure, all parts and housings from a small bevel gear of a second shaft transmission of a gearbox to driving wheels are collectively called a rear axle, the rear axle of the wheel tractor generally comprises a central transmission, a differential, a final transmission, a half shaft and the like, and the rear axle is used for distributing power input by the gearbox to left and right driving wheels after reducing speed and increasing torque and changing the power transmission direction, so that a vehicle runs and the left and right driving wheels are allowed to rotate at different rotating speeds. In general, the rear axle gear is already selected and adjusted before leaving the factory, so that it is not necessary to disassemble and adjust the rear axle gear. Only when the gear and the bearing damage the correct meshing position of the gear due to abrasion and the like, abnormal noise is generated, and inspection, adjustment or replacement of a new member is required. In the prior art, the structure of the rear central transmission assembly is complex, the process of checking or replacing a new part is complex, the overall production cost is improved, and the comprehensive popularization is not facilitated.
Disclosure of Invention
The utility model provides a back central transmission assembly has solved the problem that central transmission assembly structure is complicated, be unfavorable for inspection, popularization behind the prior art.
The technical scheme of the utility model is realized like this: the rear central transmission assembly comprises a transmission case body, wherein a small bevel gear shaft extending along the horizontal direction is arranged in the transmission case body, a small bevel gear is fixed at the front end of the small bevel gear shaft, and a front driving output gear in key fit with the small bevel gear shaft is sleeved at the middle section of the small bevel gear shaft;
the differential mechanism assembly is arranged on one side of the small bevel gear, a large bevel gear meshed with the small bevel gear is arranged on the differential mechanism assembly, and the axial direction of the large bevel gear is vertical to the axial direction of the small bevel gear shaft;
differential bearing blocks are symmetrically arranged on two sides of the gearbox shell and are connected to the differential assembly through adjusting nuts.
As a preferred embodiment, a cylindrical roller bearing positioned at one side of the small bevel gear is sleeved on the small bevel gear shaft, and a spacer bush for preventing the small bevel gear from displacing is further arranged at one side of the cylindrical roller bearing;
the other end of the small bevel gear shaft is further provided with a bearing seat and a tapered roller bearing positioned in the bearing seat, the tail end of the small bevel gear shaft is supported in the tapered roller bearing, and a nut and a stop washer are arranged at the tail end of the small bevel gear shaft.
In a preferred embodiment, one side of the bearing seat is further provided with a plurality of adjusting shims, and the adjusting shims are used for adjusting the position of the small bevel gear shaft in the axial direction of the small bevel gear shaft.
As a preferred embodiment, through holes are symmetrically formed on two side surfaces of the gearbox shell, and the adjusting nuts are positioned inside the gearbox shell and are matched with the through holes in size;
the size of the outer edge of the differential bearing seat is larger than that of the through hole, and the outer edge of the differential bearing seat is fixed on the gearbox shell through a plurality of circumferentially and uniformly distributed bolts.
After the technical scheme is adopted, the beneficial effects of the utility model are that: the utility model discloses a back central drive assembly is through preceding drive output gear with power transmission to small circle bevel gear epaxial, then utilize small circle bevel gear drive large bevel gear rotatory, finally utilize large bevel gear to drive the differential mechanism action of the left and right sides, not only realized the ascending change of power direction, ensured left and right sides differential mechanism's synchronous revolution moreover. In addition, in tractor gear boxes of different sizes, the positions of the small bevel gear shafts can be adjusted through a plurality of adjusting gaskets, and then the meshing positions of the small bevel gears and the large bevel gears are changed to adapt to different gear box models and working environments. Overall speaking, the utility model discloses a back central authorities transmission assembly simple structure, convenient to use can both raise the efficiency effectively when installation and maintenance, and convenient to popularize and use has fine practicality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
in the figure: 1-a gearbox housing; 2-small bevel gear shaft; 3-small bevel gear; 4-front drive output gear; 5-a differential assembly; 6-large bevel gear; 7-differential bearing seats; 8-adjusting the nut; 9-cylindrical roller bearings; 10-spacer bush; 11-a bearing seat; 12-tapered roller bearings; 13-a nut; 14-a stop washer; 15-adjusting the shim; 16-a via hole; 17-bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example (b):
as shown in fig. 1, for an embodiment of the rear central transmission assembly of the present invention, it includes a transmission housing 1 at first, a small bevel gear 3 is fixed at the front end of a small bevel gear shaft 2 in the transmission housing 1, which extends along the horizontal direction, and a front driving output gear 4 is sleeved at the middle part of the transmission housing and is in key fit with the middle part of the transmission housing. In addition, a cylindrical roller bearing 9 positioned at one side of the small bevel gear 3 is sleeved on the small bevel gear shaft 2, and a spacer sleeve 10 for preventing the small bevel gear shaft from displacing is arranged at one side of the cylindrical roller bearing 9.
The other end of the small bevel gear shaft 2 is also provided with a bearing seat 11 and a tapered roller bearing 12 positioned in the bearing seat 11, the tail end of the small bevel gear shaft 2 is supported in the tapered roller bearing 12, the tail end of the small bevel gear shaft 2 is provided with a nut 13 and a stop washer 14, and the number of the nuts 13 is two and is respectively arranged on two sides of the stop washer 14.
One side of the small bevel gear 3 is provided with a differential assembly 5, the differential assembly 5 is also positioned inside the gearbox shell 1, the differential assembly 5 is provided with a large bevel gear 6 meshed with the small bevel gear 3, and the axial direction of the large bevel gear 6 is vertical to the axial direction of the small bevel gear shaft 2. By the structure, power can be transmitted to the small bevel gear shaft 2 from the front drive output gear 4, and then the small bevel gear 3 is used for driving the large bevel gear 6 and the differential assembly 5 to rotate.
Differential bearing seats 7 are symmetrically arranged on two sides of the gearbox shell 1, and the differential bearing seats 7 are connected to the differential assembly 5 through adjusting nuts 8. Through holes 16 are symmetrically formed in two side faces of the gearbox shell 1, and the adjusting nut 8 is located inside the gearbox shell 1 and is matched with the through holes 16 in size; the size of the outer edge of the differential bearing seat 7 is larger than that of the through hole 16, and the outer edge of the differential bearing seat 7 is fixed on the transmission case 1 through a plurality of circumferentially uniformly distributed bolts 17 so as to ensure the mechanical stability of the differential bearing seat.
Finally, a plurality of adjusting gaskets 15 are arranged on one side of the bearing seat 11, and the positions of the small bevel gear shaft 2 in the axial direction can be adjusted through the adjusting gaskets 15, so that the meshing position of the small bevel gear 3 and the large bevel gear 6 is changed, and the gearbox is suitable for different gearbox models and working environments.
The utility model discloses a power transmission route is: front drive output gear 4 → small bevel gear shaft 2 → small bevel gear 3 → large bevel gear 6 → differential assembly 5.
Wholly say, the utility model discloses a back central authorities transmission assembly simple structure, convenient to use can both raise the efficiency effectively when installation and maintenance, and convenient to popularize and use has fine practicality.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. Back central authorities transmission assembly, its characterized in that: the gearbox comprises a gearbox shell (1), wherein a small bevel gear shaft (2) extending along the horizontal direction is arranged in the gearbox shell (1), a small bevel gear (3) is fixed at the front end of the small bevel gear shaft (2), and a front driving output gear (4) in key fit with the middle section of the small bevel gear shaft is sleeved on the middle section of the gearbox shell;
the differential mechanism is characterized by further comprising a differential mechanism assembly (5) arranged on one side of the small bevel gear (3), wherein a large bevel gear (6) meshed with the small bevel gear (3) is arranged on the differential mechanism assembly (5), and the axial direction of the large bevel gear (6) is perpendicular to the axial direction of the small bevel gear shaft (2);
differential bearing blocks (7) are further symmetrically arranged on two sides of the gearbox shell (1), and the differential bearing blocks (7) are connected to the differential assembly (5) through adjusting nuts (8).
2. The rear central drive assembly of claim 1, wherein: a cylindrical roller bearing (9) positioned on one side of the small bevel gear (3) is sleeved on the small bevel gear shaft (2), and a spacer bush (10) for preventing the cylindrical roller bearing (9) from displacing is further arranged on one side of the cylindrical roller bearing;
the other end of the small bevel gear shaft (2) is further provided with a bearing seat (11) and a tapered roller bearing (12) located in the bearing seat (11), the tail end of the small bevel gear shaft (2) is supported in the tapered roller bearing (12), and the tail end of the small bevel gear shaft (2) is provided with a nut (13) and a stop washer (14).
3. The rear central drive assembly of claim 2, wherein: and a plurality of adjusting gaskets (15) are further arranged on one side of the bearing seat (11), and the adjusting gaskets (15) are used for adjusting the position of the small bevel gear shaft (2) in the axial direction of the small bevel gear shaft.
4. The rear central drive assembly of claim 1, wherein: through holes (16) are symmetrically formed in two side faces of the gearbox shell (1), and the adjusting nut (8) is located in the gearbox shell (1) and is matched with the through holes (16) in size;
the size of the outer edge of the differential bearing seat (7) is larger than that of the through hole (16), and the outer edge of the differential bearing seat (7) is fixed on the gearbox shell (1) through a plurality of circumferentially and uniformly distributed bolts (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222347198.3U CN218031295U (en) | 2022-09-05 | 2022-09-05 | Rear central transmission assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222347198.3U CN218031295U (en) | 2022-09-05 | 2022-09-05 | Rear central transmission assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218031295U true CN218031295U (en) | 2022-12-13 |
Family
ID=84353085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222347198.3U Active CN218031295U (en) | 2022-09-05 | 2022-09-05 | Rear central transmission assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218031295U (en) |
-
2022
- 2022-09-05 CN CN202222347198.3U patent/CN218031295U/en active Active
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