Concrete mixer truck, mixing drum assembly and its raceway device

Abstract

The present invention discloses a raceway apparatus, wherein the rear portion of an inner raceway and an outer raceway matched with a supporting roller form a snapping connection, the outer raceway is provided with a side plate sleeved on the outer portion of the outer periphery surface of the inner raceway, and is provided with bottom plates arranged on the outer portion of the rear end surface of the inner raceway in a parallel manner, a plurality of first threaded holes matched with the outer raceway penetrate through the outer periphery portion of the inner raceway, various first threaded holes are uniformly distributed along a circumferential direction of the inner raceway, the axial line of the first threaded hole is parallel to the axial line of the inner raceway, threads inside the first threaded hole are provided with an ejection bolt, and the axial length of the ejection bolt is more than the axial thickness of the inner raceway. The raceway apparatus has characteristics of simple maintenance and replacement, and low replacement cost. The present invention further discloses a mixing cylinder assembly applying the raceway apparatus, and a concrete mixing and transporting truck applying the raceway apparatus.

Description

technical field [0001] The invention relates to the technical field of concrete mixer trucks, in particular to a raceway device and a mixing drum assembly using the raceway device. The invention also relates to a concrete mixer truck using the mixer drum assembly. Background technique [0002] Concrete mixer truck is a special vehicle for transporting concrete. During the transportation process, the mixing drum will always be kept rotating to ensure that the carried concrete will not solidify. The raceway device is the main supporting device for the mixing drum. Performance is also increasingly concerned by people. [0003] At present, during the working process of the existing concrete mixer truck, its raceway device is welded and fixed to the tail cone of the mixing drum. During the operation of the equipment, the mixing drum is driven to rotate by the reducer connected to its front cone. At this time, the raceway device It is in contact with the supporting wheel located...

AI Technical Summary

Problems solved by technology

[0004] However, although the above-mentioned assembly structure can meet the basic needs of use, due to the direct contact between the raceway device and the supporting wheel, there will be structural wear and tear between the two, and with the increase of the loading capacity of the mixing drum, this wear will be reduced. It becomes more and more serious. After long-term high-intensity operation causes serious wear and tear, the vehicle cannot be used normally, and the raceway device must be replaced.

However, since the raceway device is directly welded and fixed with the mixing drum, the replacement process is cumbersome, the operation is difficult, and the replacement cost is high, which causes inconvenience to related production work

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