Concrete mixing transportation truck raceway

Abstract

The invention provides a concrete mixing transportation truck raceway, a raceway is connected to the outer wall of the back cone of the tank body of a mixer truck, the cross section of the raceway is a trapezoid, a reinforcing plate is connected to the inner wall of the back cone of the tank body of the mixer truck, the reinforcing plate is made by curling a fan-shaped plate cut by a numerical control plasma cutting machine; the back cone of the tank body, corresponding to the raceway is opened with a slotted hole I, and the reinforcing plate is provided with a slotted hole II. The concrete mixing transportation truck raceway can effectively improve the strength and stiffness of the tank body at the raceway, effectively disperse concentrated load at the raceway, improve the bearing capacity of the tank body, and reduce the welding line snapping at the connection position of the tank body and the raceway and tank skin cracking accidents at the raceway.

Description

technical field [0001] The invention relates to a raceway for a concrete mixing transport vehicle, which belongs to the technical field of machinery. Background technique [0002] Due to the requirement of the tank body to rotate during transportation, the tank body of the concrete mixer truck is only supported at two places, the large flange of the front cone and the raceway of the rear cone. The above two supports bear the full weight of the concrete at full load. At present, the structure of the tank body and the raceway in use is mainly that the raceway is set on the rear cone of the tank body, and is welded and fixed by two outer corner ring welds. This structure mainly has the following disadvantages: (1) The tank body at the raceway bears concentrated load, which is prone to large elastic deformation during use, so that the connecting weld between the tank body and the raceway is subjected to alternating stress. (2) There is a large difference between the thickness ...

AI Technical Summary

Problems solved by technology

This structure mainly has the following disadvantages: (1) The tank body at the raceway bears concentrated load, which is prone to large elastic deformation during use, so that the connecting weld between the tank body and the raceway is subjected to alternating stress

(2) There is a large difference between the thickness of the tank plate and the thickness of the raceway, and there is stress concentration at the two outer ring welds connecting the two

In addition, the welding heat of the two outer girth welds is high, which may easily cause changes in the metallographic structure of the tank plate in the heat-affected zone of the two outer girth welds, and reduce the strength of the local tank skin

Under the joint action of the above reasons, the weld between the tank body and the raceway is prone to accidents of open welding or partial cracking of the tank skin

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