Supporting leg mechanism of pump truck

Abstract

The invention relates to a supporting leg mechanism of a pump truck. An automotive chassis of the pump truck is provided with a base assembly and an auxiliary frame. The supporting leg mechanism comprises front supporting legs on the base assembly and rear supporting legs on the auxiliary frame. The front supporting legs include two upper supporting legs and two lower supporting legs, the base assembly is provided with an upper layer of X-type guide rail and a lower layer of X-type guide rail, and the two upper supporting legs and the two lower supporting legs are installed on the upper layer of X-type guide rail and the lower layer of X-type guide rail respectively. The four front supporting legs are arranged in an upper layer and a lower layer respectively and distributed in a dual-X shape, the front supporting legs stretch and retract in the fixed rails, the bearing range of the supporting legs is widened, the two rear supporting legs are fixed to the auxiliary frame, and supporting positions are kept unchanged. The supporting leg structure can better adapt to pump truck work site requirements, the pump truck can be better arranged in a narrow work site, the weight of the rear portion of the pump truck can be better borne, so the pump truck is more stable and safer during work, and the anti-rollover capacity of the pump truck is greatly improved.

Description

technical field [0001] The invention relates to a boom pump truck, in particular to a leg structure of a boom pump truck. Background technique [0002] At present, the outrigger structure of the concrete pump truck mainly has the following methods. [0003] Front swing extension + rear swing structure: The outriggers of the pump truck with this structure can distribute the load of the pump truck in a wide range and achieve the stability of the pump truck. However, since the front and rear outriggers are mainly completed by swinging, a larger swinging space is required, and the layout of the outriggers is easily restricted by the work site. Due to the lack of support at the rear of the pump truck, this structure has a large vibration of the rear working device, which also affects the working stability of the pump truck, and even causes severe vibration of the material distribution device during the working process of the pump truck due to the periodic vibration of the rear d...

AI Technical Summary

Problems solved by technology

However, the rear swing structure still brings local space constraints

And this structure has no support at the rear of the pump truck, and the rear working device vibrates greatly, which also affects the stability of the pump truck's work, and even due to the periodic vibration of the rear device, it causes severe vibration of the material distribution device during the working process of the pump truck

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