Safety device of transmission shaft of concrete mixer truck

Abstract

The invention relates to a safety device of a transmission shaft of a concrete mixer truck, which comprises a protective plate and a U-shaped component, wherein the openings of the U-shaped component are upward. The protective plate extends along a horizontal direction and is connected with a pump bracket; two opening ends of the U-shaped component are arranged at the bottom of the protective plate respectively; and the transmission shaft passes through the middle part of the U-shaped component. When either end of the transmission shaft breaks, the U-shaped component limits the rotation of the transmission shaft in a U-shaped space of the U-shaped component. Therefore, the transmission shaft does not fall off from the U-shaped component so as to break other parts such as a chassis. The safety device effectively prevents damages to the other parts of the concrete mixer truck, such as the chassis, which are caused by the rupture of the transmission shaft.

Description

technical field [0001] The invention relates to a concrete mixer truck, in particular to a safety device for a transmission shaft of the concrete mixer truck. Background technique [0002] In recent years, with the rapid development of the construction industry, the demand for concrete mixer trucks has been greatly stimulated. However, under the condition that the sales price keeps decreasing and the raw materials keep rising, in order to compete for the limited market, all manufacturers do their best in terms of technical performance and configuration optimization, in order to win the favor of users and occupy the market. [0003] Such as figure 1 As shown, a general concrete mixer truck is mainly composed of a chassis 1, a hydraulic transmission system 2, a tank body 3, a feeding and discharging device 4 and other structural components. Among them, the hydraulic transmission system 2 mainly includes a transmission shaft 21, a hydraulic motor 22, a hydraulic oil pump 23, ...

AI Technical Summary

Problems solved by technology

Among them, the hydraulic transmission system 2 mainly includes a transmission shaft 21, a hydraulic motor 22, a hydraulic oil pump 23, a hydraulic oil pipe 24, a reducer 25, etc., one end of the transmission shaft 21 is connected with the power take-off 26, and the other end is connected with the hydraulic oil pump 23. The oil pump 23 is installed on the oil pump bracket 231, and the service life of the transmission shaft 21 changes with the change of the external force and dynamic load, so it often breaks due to fatigue or is subjected to impact force. Generally, the location of the fracture is mainly on the transmission shaft 21, and the broken transmission shaft 21 is very easy to damage other components such as the parts of the chassis 1 of the transport vehicle. In addition, the concrete in the mixer tank 3 will solidify due to untimely handling, resulting in greater economic loss

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