Shift assist mechanism and truck crane

Abstract

The invention discloses a gear shifting power-assisted mechanism and an automobile crane, relates to the technical field of engineering machinery, and solves the technical problem of shorter service life in the prior art. The gear shifting power-assisted mechanism comprises a power source device, a sensing device, a gear shifting rocker arm and a reciprocating monition device, wherein the sensing device is connected with a manual drive part and rotationally connected with one of two ends of the gear shifting rocker arm, and the reciprocating motion device is rotationally connected with the other end of the gear shifting rocker arm; a pulling part is arranged between the two ends of the gear shifting rocker arm, is inserted in a gear shifting shaft of a gearbox and can drive the gear shifting shaft of the gearbox to rotate and shift during rotation; and the sensing device is connected between the power source device and the reciprocating motion device. The crane comprises the gear shifting power-assisted mechanism provided by the invention. According to the gear shifting power-assisted mechanism and the automobile crane, the reliability of the gear shifting power-assisted mechanism is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a shift assist mechanism and a truck crane provided with the shift assist mechanism. Background technique [0002] Truck cranes mostly use heavy-duty, high-torque gearboxes. Due to their own structure, the shifting force of this kind of gearbox is generally greater than that of passenger cars and commercial vehicles. The distance is limited, resulting in heavy shifting of truck cranes and poor driving comfort. In addition, a large shifting force will also cause a large force on the flexible shaft, reducing the life of the flexible shaft and transmission efficiency. [0003] The commonly used shifting manipulation methods of truck cranes are as follows: figure 1 As shown, the controller (also called: manipulator) 983 converts the forward and backward movement of the shift handle into the pushing and pulling action of the shift flexible shaft 984 , so as to shift th...

AI Technical Summary

Problems solved by technology

[0006] 1. Since the main body of the shift assist mechanism is fixed on the gearbox 96, when shift assist is performed, due to the swing of the shift fork 93, the sensor 94 and the piston rod of the actuator cylinder 97 will be subjected to lateral force, which is not conducive to the movement of the piston rod. Sealing reduces the service life of the shift assist mechanism, resulting in a relatively short service life of the shift assist mechanism

[0007] 2. The connection mechanism in the shift booster mechanism is complex, requires a large space, and is difficult to arrange

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