Sequential telescoping mechanism with multiple oil cylinders, and engineering machinery

Abstract

The invention discloses a sequential telescoping mechanism with multiple oil cylinders, and engineering machinery. The sequential telescoping mechanism comprises a first oil cylinder, and a second oil cylinder is installed above the first oil cylinder; a third oil cylinder is installed above the second oil cylinder, and the first oil cylinder comprises a first piston rod and a sleeve; the outer side wall of the first piston rod is slidably connected with the inner side wall of the sleeve, and the side, away from the sleeve, of the first piston rod is fixedly connected with a first fixing block; a second plate body is used in cooperation with a threaded hole, and therefore the mechanism is easy to install; a second fixing block is pushed through a hydraulic cylinder; through cooperative use of a second rotating shaft, the elevation angle of the first fixing block can be controlled, and therefore the elevation angle of the first oil cylinder is controlled, and the first fixing block is supported through a first shell and the first rotating shaft; therefore, the first oil cylinder is more stable during regulation and is prevented from shaking; and a first plate body is driven by a motor to rotate, and therefore the orientation of the first oil cylinder can be adjusted, and the first oil cylinder is more flexible to use.

Description

technical field [0001] The invention relates to the technical field of a multi-cylinder sequential telescopic mechanism, in particular to a multi-cylinder sequential telescopic mechanism and engineering machinery. Background technique [0002] As we all know, most of the current telescopic mechanisms of cranes are driven by hydraulic cylinders. The cranes with four-section telescopic booms use two-stage telescopic cylinders, and the cranes with five-section telescopic booms use three-stage telescopic cylinders. Because the cross-sections of different telescopic arms are different, Therefore, the sequential expansion and contraction of the oil cylinder can reduce the stress on the jib with a smaller section modulus, thereby improving the lifting performance of the entire jib. [0003] China's public authorized invention CN205592215U discloses a multi-cylinder sequential telescoping mechanism and engineering machinery. The device can easily realize multi-stage (the number of o...

AI Technical Summary

Problems solved by technology

However, the device lacks a mounting base, which makes it inconvenient to fix the device with the equipment used. At the same time, when the device is in use, it lacks an adjustment device for angle and direction, which makes the device inconvenient in use.

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