Supporting system and engineering machine with same

Abstract

A support system of an engineering machinery and the engineering machinery having the support system. The support system comprises a first support leg (21), a second support leg (22), a third support leg (23), and a fourth support leg (24) arranged on the engineering machinery, and additional support legs (25 and 26) arranged between the third support leg (23) and the fourth support leg (24). The minimum distance running from support points of the third support leg (23) and of the fourth support leg (24) to the circumference of a circle around the center of gravity of the engineering machinery is less than the minimal distance running from the support points of two adjacent support legs among the third support leg (23), the fourth leg (24), and the additional support legs (25 and 26) to the circumference of the circle around the center of gravity of the engineering machinery. The arrangement of the additional support legs (25 and 26) increases the anti-rollover capability and support capability of the entire vehicle, while at the same time, when the lengths of the support legs are reduced, obviates the need to occupy a great area of a site, and maintains a degree of stability identical to existing support systems, thus allowing the engineering machinery having the support system to be applicable in limited spaces, and satisfying construction needs on sites that are narrow and small.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a support system. The invention also relates to a construction machine with a support system as described above. Background technique [0002] Construction machinery usually has a support system to support the entire vehicle and drive the entire vehicle. Taking a concrete pump truck as an example, its support system generally includes four outriggers located on a fixed turret. During operation, two outriggers protrude forward and the other two outriggers protrude backward. [0003] Please refer to figure 1 , figure 1 It is a schematic diagram of the distribution of outriggers of a concrete pump truck in the prior art, and the figure also shows the relationship between the polygon formed by the support points of the outriggers and the stability of the vehicle body. [0004] The support system of the concrete pump truck is provided with a first front outrigger 11 ...

AI Technical Summary

Problems solved by technology

However, the concrete pump truck with this structure has the following technical problems: Generally, the longer the boom of the concrete pump truck, the longer the corresponding chassis and the larger area of ​​the corresponding center of gravity circle. In order to ensure the stability of the whole vehicle, the support The legs and arms must be longer to ensure that the shortest distance between the adjacent support points and the circumference of the center of gravity remains within the predetermined safety range

When the outrigger arm is stretched out, under the action of gravity, there must be an upturning phenomenon (there is a gap between the outer arm and the inner arm of the telescopic arm), if the length of the chassis is long, under the action of the self-weight of the chassis, the It is difficult to ensure that the tail of the chassis is effectively supported by the outriggers, so it is difficult to ensure the height of the chassis from the ground

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