CN201884494U

CN201884494U - Transmission shaft of motor vehicle

Info

Publication number: CN201884494U
Application number: CN2010206530969U
Authority: CN
Inventors: 潘峰; 刘益凡; 胡全民; 周有匀
Original assignee: Chongqing Heavy Steam Yuandong Transmission Shaft Co ltd
Current assignee: Chongqing Heavy Steam Yuandong Transmission Shaft Co ltd
Priority date: 2010-12-10
Filing date: 2010-12-10
Publication date: 2011-06-29
Anticipated expiration: 2020-12-10

Abstract

The utility model discloses a transmission shaft of a motor vehicle. The transmission shaft comprises a shaft tube made of steel material 700QZ and universal couplings at the two ends of the shaft tube; and the outer diameter of the shaft tube is 120 mm, and the wall thickness thereof is 5 mm. As the steel material 700QZ with a higher strength is adopted to substitute the frequently-adopted material 480QZ, the maximum torque which can be borne by the shaft tube of the transmission shaft is improved, the normal operation of transmission shaft assembly is ensured when the load of a vehicle exceeds the rated load, the failure rate of distorted deformation is reduced, and the safety of vehicle travelling is improved; furthermore, by reducing the wall thickness of the shaft tube of the transmission shaft from 6 mm to 5 mm, the transmission shaft is lightened, and the product cost is simultaneously reduced.

Description

The motor vehicle transmission axle

Technical field

The utility model relates to a kind of motor vehicle transmission axle.

Background technique

A kind of cardan-shaft tube specification commonly used at present is φ 120 * 6, its Maximum Torque that can bear is 31364N.M, the cardan-shaft tube of above specification can satisfy under the corresponding vehicle, the normal delivery of load-carrying vehicle when specified Deadweight cargo capacity, and safety coefficient is all more than 1.5.But present domestic truck uses generally overload, and load-carrying vehicle moves under 2 times of specified Deadweight cargo capacity even higher loading state, and the cardan-shaft tube safety coefficient is descended, and causes the cardan-shaft tube torsional deformation, causes driving-shaft assembly to be shaken even total failure.In addition, also face in the Automobile Design and alleviate light weight, the problem that reduces cost.

Therefore, need to explore a kind of transmission shaft, guarantee that vehicle driving-shaft assembly when surpassing load rating also can run well, reduce the rate of fault of transmission shaft torsional deformation, promote the Security of vehicle driving, alleviate transmission shaft weight simultaneously, reduce production costs.

Summary of the invention

In view of this, the purpose of this utility model is to provide a kind of motor vehicle transmission axle, and the Maximum Torque that cardan-shaft tube can be can bear promotes, and promotes the Security of vehicle driving.

Motor vehicle transmission axle of the present utility model comprises the central siphon made by steel 700QZ and the universal joint at central siphon two ends.

Further, the external diameter of described central siphon is 120mm, and wall thickness is 5mm.

The beneficial effects of the utility model are: the utility model is owing to select for use the higher material 700QZ of intensity to replace the material 480QZ that generally adopts, so the Maximum Torque that cardan-shaft tube can bear promotes, guarantee that vehicle driving-shaft assembly when surpassing load rating also can run well, reduce the rate of fault of transmission shaft torsional deformation, promoted the Security of vehicle driving; In addition, the transmission shafts thickness of pipe wall is dropped to 5mm by 6mm, make transmission shaft weight saving, reduced cost of production simultaneously.

Description of drawings

In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with accompanying drawing the utility model is described in further detail, wherein:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A line sectional view of Fig. 1.

Embodiment

Fig. 1 is a structural representation of the present utility model, and Fig. 2 is the A-A line sectional view of Fig. 1; As shown in the figure, motor vehicle transmission axle of the present utility model comprises the central siphon 1 made by steel 700QZ and the universal joint 2 at central siphon 1 two ends.

As further improvement of the utility model, the external diameter of described central siphon 1 is 120mm, and wall thickness is 5mm.

Traditional cardan-shaft tube specification is φ 120 * 6, and the utility model drops to 5mm with the transmission shafts thickness of pipe wall by 6mm, select for use the higher material 700QZ of intensity to replace the material 480QZ that generally adopts simultaneously, so the Maximum Torque that cardan-shaft tube can bear promote, and weight saving.

Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although by the utility model being described with reference to preferred embodiment of the present utility model, but those of ordinary skill in the art is to be understood that, can make various changes to it in the form and details, and the spirit and scope of the present utility model that do not depart from appended claims and limited.

Claims

1. motor vehicle transmission axle is characterized in that: comprise the central siphon made by steel 700QZ and the universal joint at central siphon two ends.

2. motor vehicle transmission axle according to claim 1 is characterized in that: the external diameter of described central siphon is 120mm, and wall thickness is 5mm.