Construction machinery chassis and supporting leg supporting device thereof

Abstract

The invention discloses a supporting leg supporting device, which is used for supporting a construction machinery chassis and comprises a supporting leg pedestal arranged below supporting legs of construction machinery, wherein the supporting leg pedestal comprises an upper pedestal and a lower pedestal; the upper pedestal is connected with the tail ends of the supporting legs; the lower pedestalis supported by the ground; and the upper pedestal and the lower pedestal are connected through a deviating mechanism, so that the upper pedestal can be selectively deviated for a preset distance relative to the lower pedestal. The supporting leg pedestal of the supporting leg supporting device can be deviated with a vertical oil cylinder. The supporting leg supporting device is improved in bearing capacity and higher in reliability and meets the development requirement of large-scale construction machinery. The invention also provides the construction machinery chassis which comprises the supporting leg supporting device. The safety and the reliability of the construction machinery chassis are improved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a leg support device for the chassis of an engineering machinery. In addition, the present invention also relates to a construction machinery chassis comprising the above-mentioned outrigger support device. Background technique [0002] With the rapid development of my country's economic construction, the market's demand for mobile construction machinery, especially large-tonnage mobile construction machinery, is increasing, and mobile construction machinery is developing in the direction of large-scale; large-scale is the key to mobile construction machinery An important design goal. [0003] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a typical construction machinery chassis in the prior art. [0004] Construction machinery chassis generally includes a vehicle frame 11, outriggers 12, outrigger bases 13 and outrigger support plates 14, whe...

AI Technical Summary

Problems solved by technology

The existing outrigger base 13 is a whole, and the ball seat 1323 and the bottom plate 1321 are welded together, and the whole structure is rigid and cannot move relatively

When hoisting, the overall sliding of the outrigger base 13 relative to the ground is likely to cause damage to the foundation, which brings hidden dangers to the safety of hoisting

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