Outrigger locking device and concrete pump truck

Abstract

The invention discloses an outrigger locking device. The device comprises a fitting seat, a lock cylinder and a control mechanism; the lock cylinder comprises a locking state and an unlocking state and is hinged with the fitting seat; and the control mechanism is used for driving the lock cylinder to swing around a hinging axle and switch between the locking state and the unlocking state. The outrigger locking device has the characteristics of rotary offset lock cylinder structure, low requirement on installation space and safe, reliable, easy and convenient operation. The invention also discloses a concrete pump truck which comprises an outrigger arranged on a bodywork chassis, wherein the outrigger is provided with the outrigger locking device; and a baffle plate which is matched with the outrigger locking device is arranged on a walking board of the bodywork chassis.

Description

technical field [0001] The invention relates to an outrigger locking device for engineering machinery and the engineering machinery, in particular to an outrigger locking device for concrete pump trucks and the concrete pump truck. Background technique [0002] Concrete pump truck is an efficient concrete conveying engineering machinery that integrates concrete pumping mechanism, hydraulic folding boom and support mechanism on the chassis of the car, integrating driving, pumping and material distribution. In order to ensure that the outriggers of the concrete pump truck will not be thrown away due to sharp turns during its driving, each outrigger must be equipped with a locking device to lock the outriggers in the retracted position. The outrigger locking device requires a lock It is reliable, simple in structure and easy to operate. [0003] At present, most of the existing locking devices for outriggers of concrete pump trucks are composed of pin shafts, pin seats, thin s...

AI Technical Summary

Problems solved by technology

This leg locking device has the following defects: first, the L-shaped chute is arranged on the side wall of the round pipe, and a branch of the L-shaped chute is centrally arranged on the side wall parallel to the axis of the round pipe, which This structure is not easy to process

Since the line of action of the applied pulling force does not coincide with the axis of the cylindrical shell, but parallel lines with a certain distance, a moment will be generated so that the axis of the deadbolt is no longer parallel to the axis of the cylindrical shell, thus Increased friction between the lock tongue and the inner wall of the cylindrical shell when the lock tongue slides, resulting in the lock tongue being stuck

Therefore, the locking device is laborious to use and inconvenient to operate

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