CN221054263U - Tractor power take-off structure and tractor - Google Patents

Abstract

The utility model discloses a power output structure of a tractor and the tractor, which comprises a transmission shaft and a power output shaft, wherein the end surfaces of the transmission shaft and the power output shaft are flange structures, mutually matched tooth surfaces are respectively arranged on the flange surfaces of the transmission shaft and the power output shaft, and the transmission shaft and the power output shaft are mutually meshed through the tooth surfaces and fixedly connected through bolts. The utility model can shorten the axial dimension of the output shaft and also can relieve the radial tension of the bolt. The structure is compact and reliable, the disassembly and the assembly are convenient, and the stability is higher.

Description

Tractor power take-off structure and tractor

Technical Field

The utility model belongs to the technical field of agricultural machinery, and particularly relates to a power output structure of a tractor and the tractor.

Background

The existing power output shaft of the tractor is propped against the check ring through the shaft shoulder or is limited to axially move through the connection mode of the flange plate and the bolt with the power output inner transmission shaft, and when the power output shaft bears larger axial force, the former mode is easy to deviate from the inside of the rear axle, so that the normal operation of the tractor is not facilitated; the latter method is simple, but has low reliability, and the power output shaft is easy to be separated. In the operation process, the stress state of the power output shaft is complex, and when the machine tool is lifted, the power output shaft is subjected to the action of axial force and is easy to deviate off, so that parts are damaged, and the operation efficiency is affected.

The information disclosed in the background section above is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.

Disclosure of Invention

The utility model aims to provide a power output structure of a tractor and the tractor, which shorten the axial dimension of an output shaft and can also relieve the radial tension received by a bolt. The structure is compact and reliable, the disassembly and the assembly are convenient, and the stability is higher.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a tractor power take off structure, includes transmission shaft and power take off shaft, wherein, the terminal surface of transmission shaft, power take off shaft is the ring flange structure, be provided with the flank of tooth of mutually supporting on the ring flange face of transmission shaft, power take off shaft respectively, transmission shaft, power take off shaft pass through the flank of tooth intermeshing to pass through bolt fixed connection.

Specifically, the tooth surface is a conical gear surface, and racks of the conical gear surface are arranged in parallel along the radial direction.

Specifically, the bevel gear face ring flange disc face is arranged in four places.

Specifically, at least one trapezoid gear surface matched with each other is further arranged on the flange disc surfaces of the transmission shaft and the power output shaft respectively, and the bolts are arranged on the trapezoid gear surfaces.

Specifically, the trapezoid gear surface and the bevel gear surface ring flange surface are alternately arranged in four places respectively.

The utility model also discloses a tractor comprising the power output structure.

Compared with the prior art, the utility model has the following beneficial effects:

Compared with the prior art, the end face teeth are added at the connection and installation positions of the flange plate and the output shaft, so that the axial dimension of the output shaft can be greatly shortened, the structure is compact and reliable, the disassembly and assembly are convenient, the teeth are in surface contact, and the stability is higher; the radial tension force received by the bolts can be relieved, stress concentration is avoided, the number of the bolts can be reduced, and the holes on the flange plate and the output shaft are reduced.

Drawings

Fig. 1 is an assembly view of a power take-off structure of the present utility model.

Fig. 2 is a front view of the power take-off shaft of the present utility model.

Fig. 3 is an isometric view of a power take-off shaft of the present utility model.

In the figure, a 1-transmission shaft; 2-a power output shaft; 3-bolts; 4-a bevel gear face; 5-trapezoid gear face.

Detailed Description

To describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description is made with reference to the embodiments in conjunction with the accompanying drawings. In the description of the present embodiment, it should be understood that terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience in describing the present embodiment and simplifying the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Examples

The technical scheme adopted by the embodiment is to construct a power output structure for a flange type replaceable external power output shaft of a tractor. As shown in fig. 1-3, the power transmission device is mainly formed by connecting transmission shafts 1, 2, a power output shaft 2 and bolts 3. The end faces of the transmission shaft 1 and the power output shaft 2 are of flange structures, mutually matched tooth faces are respectively arranged on the flange faces of the transmission shaft 1 and the power output shaft 2, the tooth faces are conical gear faces 4, racks of the conical gear faces 4 are arranged in parallel in the radial direction, the flange faces of the conical gear faces 4 are arranged everywhere, and the transmission shaft 1 and the power output shaft 2 are meshed with each other through the tooth faces and fixedly connected through bolts 3.

In the structural aspect, the end face teeth are added at the connection and installation position of the flange plate and the output shaft, the teeth are in surface contact, the radial tension force received by the bolts can be relieved, and the service life problem of the power output structure is solved; the reliability problem of the power output structure is solved;

In the aspect of cost, the end face teeth can greatly shorten the axial dimension of the output shaft, reduce the number of holes on the flange plate and the output shaft, and greatly improve the service performance and the service life although the end face teeth at the joint of the flange plate and the output shaft are increased, thereby solving the problem of difficult maintenance of the power output mechanism and reducing the total use cost.

Examples

Referring to fig. 1, in this embodiment, on the basis of embodiment 1, trapezoidal gear faces 5 which are mutually matched are also respectively provided on flange faces of a transmission shaft 1 and a power output shaft 2, the trapezoidal gear faces 5 and conical gear faces 4 are alternately provided around, and bolts 3 are provided on the trapezoidal gear faces 5. The trapezoid gear surface 5 may be different from the direction of the bevel gear surface 4, and a tooth surface with a larger trapezoid gear surface 5 may be the mounting surface of the bolt 3.

In some embodiments, there is also provided a tractor comprising the power take-off structure of embodiments 1-2 described above.

While the utility model has been described in detail with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.

Claims (6)

1. The utility model provides a tractor power take off structure, includes transmission shaft (1) and power take off shaft (2), its characterized in that: the end faces of the transmission shaft (1) and the power output shaft (2) are of flange structures, mutually matched tooth faces are respectively arranged on the flange faces of the transmission shaft (1) and the power output shaft (2), and the transmission shaft (1) and the power output shaft (2) are mutually meshed through the tooth faces and fixedly connected through bolts (3).

2. A tractor power take-off as claimed in claim 1, wherein the tooth surfaces are conical gear surfaces (4), the racks of the conical gear surfaces (4) being arranged in parallel in the radial direction.

3. A tractor power take-off as claimed in claim 2, wherein the bevel gear face (4) is arranged around the flange face.

4. The tractor power output structure according to claim 2, wherein at least one trapezoid gear surface (5) which is matched with each other is further arranged on the flange surface of the transmission shaft (1) and the flange surface of the power output shaft (2), and the bolts (3) are arranged on the trapezoid gear surface (5).

5. A tractor power take-off as claimed in claim 4, wherein the trapezoidal gear faces (5) and the conical gear faces (4) are arranged alternately around the annular flange faces.

6. A tractor, characterized in that: comprising a power take-off structure according to any one of claims 1-4.