Outrigger locking system and mobile engineering machinery

Abstract

The invention relates to the technical field of construction machinery, and discloses a locking system for outriggers, which is used to lock the outriggers after the outriggers stand on the ground, including a pressure detection device, a controller and an electric control switch module. The switch module is connected in series on the oil inlet or return path of the outrigger expansion cylinder; the pressure detection device detects the pressure in the rodless chamber of the outrigger support cylinder, and sends a pressure signal to the controller; the controller receives For the pressure signal, the detected pressure is compared with a preset value, and if the detected pressure is greater than the preset value, the electronic control switch module is controlled to be in a closed state. The outrigger locking system of this structure locks the outriggers after the outriggers stand on the ground, which can effectively prevent damage to the outriggers due to misoperation and reduce potential safety hazards; moreover, the performance is reliable and the locking effect is obvious. The invention also discloses a mobile construction machine with the above-mentioned outrigger locking system.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a locking system for outriggers used for locking outriggers after the outriggers support the ground. The invention also relates to a mobile construction machine with the above-mentioned outrigger locking system. Background technique [0002] With the rapid development of my country's economic construction, all kinds of mobile construction machinery are more and more widely used in various engineering constructions. [0003] In order to facilitate the transition and meet the needs of construction operations, mobile construction machinery such as concrete pump trucks and lifting vehicles usually have an appropriate driving mechanism and a plurality of retractable outriggers arranged around the main body of the construction machinery; each outrigger usually It includes a deployment cylinder and a support cylinder. The deployment cylinder can realize the expansion and ...

AI Technical Summary

Problems solved by technology

[0005] When the outriggers of the concrete pump truck are unfolded and the four outriggers are fully supported, the weight of tens of tons of the whole vehicle will completely act on the four outriggers. Movement in the horizontal direction will generate a huge twisting force on the outriggers, which will easily cause a series of consequences such as cracking of the outriggers. Once the outriggers fail, the safety performance of the vehicle will be affected

[0006] In the prior art, eye-catching signs are usually used on the outriggers to remind the operator not to deploy or retract the outriggers after they have supported the ground. Note that the sign is often covered by splashed concrete. When the outriggers are on the ground, the operator is prone to misuse and pull the outrigger expansion handle, which in turn makes the outrigger expansion cylinder move in the horizontal direction

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