Engineering machinery

Abstract

The invention discloses engineering machinery, which comprises ground jacks and a fixed turret; the fixed turret comprises a turret base provided with a ground jack base, and a chassis connected with the engineering machinery; the turret base comprises a vertical cylinder and a rotary table connection board located over the vertical cylinder, an underframe is integrated with the turret base and located under the turret base; a lower end of the vertical cylinder of the turret base extends to a lower end surface of the underframe, a ground jack arm of the ground jack is a support jack, a cylinder barrel of the support jack is hinged with the ground jack base through a hinge shaft, and an axis of the hinge shaft is parallel to the chassis; one end of a power component is unfolded to be connected with the cylinder barrel while the other end of the power component is connected with the body of the engineering machinery. The engineering machinery provided by the invention has simpler structures of the ground jacks and the fixed turret, so that difficulty in the distribution of the ground jacks and limitation of site on unfolding the ground jacks are both reduced, and volume and weight of the fixed turret are also reduced.

Description

technical field [0001] The invention relates to the technical field of machinery, in particular to an engineering machine. Background technique [0002] With the rapid development of the economy, various construction machinery has been widely used. The use of construction machinery such as concrete pump trucks and cranes is becoming more and more widespread. However, with the continuous increase in the tonnage of construction machinery, in order to improve stability and avoid overturning due to excessive operating loads, construction machinery is usually equipped with outriggers. At the same time, in order to facilitate the transport or hoisting of items to reach the target position smoothly, a turntable is also provided, and a fixed turret is also arranged between the turntable and the chassis to facilitate the setting of the turntable. [0003] Please refer to figure 1 , figure 1 It is a structural schematic diagram of a typical concrete pump truck in the prior art. ...

AI Technical Summary

Problems solved by technology

Specifically, the above-mentioned force mainly includes the force of up and down vibration, the front and rear impact force when starting and stopping the construction machinery during the movement, and the left and right roll torsion force when turning. The weight of the boom and other devices connected to the turntable is relatively large. The inertial force is very large. Therefore, in order to ensure that the sub-beam can withstand the above-mentioned forces, the length of the sub-beam is generally very long, the structure is relatively complicated, the manufacturing process is difficult, and the cost is high.

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