CN220947369U - Wheel disc driving shaft - Google Patents

Abstract

The utility model relates to the technical field of automobile driving, in particular to a wheel disc driving shaft. Including the axis body, still include: the wheel disc is fixed at one end of the shaft body and fixedly connected with the rim; the shaft body is a stepped shaft, one end with the largest diameter is fixedly connected with the wheel disc, and one end with the smallest diameter is provided with an external spline. The transmission can effectively transmit the output power of the gearbox to the driving wheel, and can ensure that the driving shaft can work normally for a long time.

Description

Wheel disc driving shaft

Technical Field

The utility model relates to the technical field of tractor driving, in particular to a wheel disc driving shaft.

Background

The tractor driving shaft is used as a connecting structure between the reduction gearbox and the driving wheel and used for transmitting power, is an indispensable structure on a vehicle and is also a key structure for normal operation of the tractor, so that the use performance of the lifting driving shaft is the direction of continuous research in the industry.

Currently, the drive shaft of the common structure has the following drawbacks. The transmission system between the driving shaft and the engine generally comprises a transmission shaft, a universal joint and other parts, and the existing transmission system is extremely easy to cause the problems of abrasion, fracture or loosening of the parts, poor lubrication or increased friction caused by lack of lubricating oil and the like. These problems can cause the transmission system to fail, thereby causing the drive shaft to fail.

Disclosure of utility model

The utility model aims to overcome the defects in the prior art, and provides a wheel disc driving shaft which not only can effectively transmit the output power of a gearbox to a driving wheel, but also can ensure that the driving shaft can work normally for a long time.

The technical scheme of the utility model is as follows: a wheel disc drive shaft comprising a shaft body, wherein further comprising:

The wheel disc is fixed at one end of the shaft body and fixedly connected with the rim;

the shaft body is a stepped shaft, one end with the largest diameter is fixedly connected with the wheel disc, and one end with the smallest diameter is provided with an external spline.

In the utility model, the wheel disc is fixedly connected with the rim of the tire through a plurality of bolts which are uniformly arranged at intervals along the circumferential direction.

The shaft body comprises a plurality of shaft sections with gradually reduced sizes, and the adjacent shaft sections are fixedly connected;

The shaft sections fixedly connected with the wheel disc are arranged on the outer side of the gearbox, and the other shaft sections are respectively and rotatably connected with the gearbox shell through bearings.

The annular outer side of the shaft section with the minimum diameter of the shaft body is provided with a gear, the gear is provided with an internal spline, and the internal spline and the external spline form spline connection.

The outer side of the end face with the smallest diameter of the shaft body is fixedly connected with a fixing frame, a planetary gear train is arranged on the fixing frame, and the planetary gear train is in transmission connection with a gear.

The beneficial effects of the utility model are as follows:

The driving shaft is fixedly connected with the tire through a wheel disc; meanwhile, the driving shaft realizes power transmission through spline connection, gears and planetary gear trains, and through structural improvement of the driving shaft, the power transmission mode of the driving shaft is changed relatively, so that the problems of abrasion, breakage, looseness and the like among all parts are reduced, the output power of the transmission can be effectively transmitted to the driving shaft for a long time, and the driving shaft can work normally for a long time.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic structural view of a wheel disc;

fig. 3 is a schematic view of a longitudinal cross-sectional structure of the present utility model.

In the figure: a wheel disc 1; 2, a shaft body; 3 a first shaft section; a second shaft section 4; 5a third shaft section; 6a fourth shaft section; 7 a fifth shaft section; 8 external splines; 9 threaded holes.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings.

In the following description, specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than those herein described, and those skilled in the art may readily devise numerous other arrangements that do not depart from the spirit of the utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

As shown in fig. 1 to 3, the disc drive shaft according to the present utility model includes a shaft body 2 and a disc 1 fixed to an end of the shaft body. In this embodiment, the shaft body 2 and the wheel disc 1 are integrally formed.

The wheel disc 1 is disc-shaped and is fixedly connected with the rim of the tire through bolts. In this embodiment, a plurality of bolt holes are provided at intervals along the circumferential direction of the wheel disc, and bolts respectively pass through the bolt holes and are fixedly connected with the rim of the tire.

The shaft body 2 is in a ladder shape, and the diameter of the shaft body is gradually reduced along the direction from one end fixedly connected with the wheel disc 1 to the free end of the shaft body.

In this embodiment, the shaft body is formed by sequentially and fixedly connecting five shaft sections with diameters gradually reduced. The shaft body sequentially comprises a first shaft section 3, a second shaft section 4, a third shaft section 5, a fourth shaft section 6 and a fifth shaft section 7 along the direction from one end of the shaft body fixedly connected with the wheel disc to the free end of the shaft body. The two adjacent shaft sections are fixedly connected.

The first shaft section 3 is fixedly connected with the wheel disc 1. The first shaft section is arranged on the outer side of the gearbox, the second shaft section to the fifth shaft section are all arranged in the gearbox, bearings are fixedly arranged on the outer surfaces of the second shaft section to the fifth shaft section, and the second shaft section to the fifth shaft section are connected with the gearbox shell in a rotating mode through the bearings. In this embodiment, the first shaft section and the fifth shaft section are in an integral structure.

The outer surface of the free end of the fifth shaft section 7 is provided with external splines 8. The drive connection between the fifth shaft section and the gearbox output shaft can be realized by means of external splines.

The free end of the fifth shaft section 7 is fixedly provided with an external spline 8, the outer side of the corresponding external spline is provided with a gear, and the inner surface of the gear is provided with an internal spline. The spline connection between the gear and the fifth shaft section is realized by the internal spline and the external spline.

The outer side of the end face of the fifth shaft section is fixedly provided with a fixing frame. In the application, the center of the end face of the fifth shaft section is fixedly connected with the fixing frame through a bolt. As shown in fig. 3, the center of the fifth shaft section is provided with a bolt hole 9. Through setting up the mount, played the barrier effect to the gear, can effectually prevent that the gear from coming off from the fifth axle section, make the state of spline connection remain throughout between gear and the fifth axle section to guarantee to remain the effectual power transmission throughout between gearbox and the tire.

Meanwhile, a planetary gear train is further arranged on the fixing frame, and an output shaft of the gearbox is in transmission connection with the gears through the planetary gear train. That is, the output power of the gearbox is transmitted to the gear through the planetary gear train, and the gear drives the fifth shaft section and the whole shaft body including the fifth shaft section to rotate through spline connection between the gear and the fifth shaft section. In the rotation process of the shaft body, torque is transmitted to the tire through the wheel disc, so that the rotation of the driving wheel is realized.

The driving shaft operates as follows. First, the drive shaft is mounted between the drive wheel and the gearbox: the wheel disc of the driving shaft is fixedly connected with the rim of the tire, one side of the shaft body of the driving shaft is arranged in the shell of the gearbox, the external spline at the end part of the shaft body is in spline connection with the internal spline of the gear, the gear is limited through the fixing frame, and the gear is always limited on the annular outer side of the shaft body. Meanwhile, the gear is in transmission connection with a planetary gear train arranged on the fixing frame. After the gearbox is started, the power of an output shaft of the gearbox is transmitted to a gear through a planetary gear train, and the gear drives the shaft body and a wheel disc fixedly connected with the shaft body to rotate through spline connection between the gear and the shaft body, so that a driving shaft fixedly connected with the wheel disc is driven to rotate, and power driving of the driving shaft is realized.

The disc drive shaft provided by the utility model is described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. A wheel disc drive shaft, includes the axis body, its characterized in that still includes:

The wheel disc is fixed at one end of the shaft body and fixedly connected with the rim;

the shaft body is a stepped shaft, one end with the largest diameter is fixedly connected with the wheel disc, and one end with the smallest diameter is provided with an external spline.

2. The disc drive axle of claim 1 wherein,

The wheel disc is fixedly connected with the rim of the tire through a plurality of bolts which are uniformly arranged at intervals along the circumferential direction.

3. The disc drive axle of claim 1 wherein,

The shaft body comprises a plurality of shaft sections with gradually reduced sizes, and the adjacent shaft sections are fixedly connected;

The shaft sections fixedly connected with the wheel disc are arranged on the outer side of the gearbox, and the other shaft sections are respectively and rotatably connected with the gearbox shell through bearings.

4. The disc drive axle of claim 1 wherein,

The annular outer side of the shaft section with the minimum diameter of the shaft body is provided with a gear, the gear is provided with an internal spline, and the internal spline and the external spline form spline connection.

5. The disc drive axle of claim 4 wherein,

The outer side of the end face with the smallest diameter of the shaft body is fixedly connected with a fixing frame, a planetary gear train is arranged on the fixing frame, and the planetary gear train is in transmission connection with a gear.