Variable-amplitude walking excavating machine

Abstract

The invention discloses a variable-amplitude walking excavating machine. Two sets of landing leg mechanisms are respectively supported on two sides of a rotating base, wherein each set of the landing leg mechanism comprises two landing leg oscillating bars which are arranged in parallel; the upper ends of the landing leg oscillating bars are hinged under the rotating base; the lower ends of the landing leg oscillating bars are supported on corresponding walking beams through hinges; landing leg hydraulic cylinders are hinged between at least one of landing leg oscillating bars and the walkingbeams; lifting wheel sliding rods are slidably supported on the walking beams; rotatable variable-amplitude lifting wheels are mounted at the upper ends of the lifting wheel sliding rods; lifting hydraulic cylinders are hinged between the lifting wheel sliding rods and the walking beams; rotatable caterpillar driving wheels are arranged at one ends of the walking beams; guide pulley sliding bars are slidably sleeved at the other ends of the walking beams; guide pulleys are arranged at external ends of the guide pulley sliding bars; variable-amplitude hydraulic cylinders are hinged between thewalking beams and the guide pulley sliding bars; and caterpillar bands are wound on the variable-amplitude lifting wheels, the caterpillar driving wheels and the guide pulleys. The variable-amplitudewalking excavating machine is stronger in climbing function and is more excellent in adaptability.

Description

technical field [0001] The invention relates to an engineering machine, in particular to a hydraulic excavator used in construction engineering. Background technique [0002] Hydraulic excavator is a kind of multifunctional construction machinery. It uses buckets to excavate, shovel soil and stones. It plays a huge role in reducing physical labor, speeding up the construction progress, and improving labor production efficiency. [0003] Hydraulic excavators are mainly composed of working devices, traveling devices, hydraulic systems and electrical control systems. Among them, the walking device has two functions of supporting and walking of the hydraulic excavator. It should have good passing performance and climbing performance, so that the excavator can walk on soft or uneven ground, and it can also have greater support. area or smaller ground specific pressure to improve the stability and safety of the excavator. [0004] Existing hydraulic excavator...

AI Technical Summary

Problems solved by technology

Although the crawler excavator has a smaller ground pressure and stronger climbing ability than the wheel excavator, the continuous expansion and extension of the hydraulic excavator's operating range makes the operating conditions of the excavator more complicated, which not only requires excavation The excavator can change its support area and grounding specific pressure according to the soft and uneven ground conditions, so as to further enhance its passing ability and spanning performance, and it is required that the excavator can climb and climb on steep slopes or stepped ground, so that It has stronger off-road performance and climbing ability; obviously the existing hydraulic excavator does not have such operation ability

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