Telescopic chassis structure used for excavator

Abstract

The invention discloses a telescopic chassis structure used for an excavator. The telescopic chassis structure comprises a main frame, a left walking frame and a right walking frame, and is characterized in that: the two sides of the main frame are respectively provided with two connecting ends symmetrically; the connecting ends are connected with the walking frames through screw threads respectively; and the inside of each of the two connecting ends on the same side of the main frame is matched with a walking frame and is provided with a limiting structure respectively. In the telescopic chassis structure, the main frame is connected with the left and right walking frames by adopting screw thread structures, which makes the chassis of the excavator telescopic, meets the requirement on transportation and improves the safety of the transportation.

Description

technical field [0001] The invention relates to a chassis structure of engineering machinery, in particular to a retractable chassis structure for excavators. Background technique [0002] In daily construction production, construction machinery such as excavators, demolition equipment, crawler cranes, and rotary drills are often used. These machinery are mainly composed of walking devices, slewing devices, working devices and control devices. The slewing device and the walking device are the body of the construction machinery, the working device is transferred to the slewing device, and the slewing device is fixed on the chassis of the walking device, such as our common excavator. [0003] According to the tonnage of the excavator, it can be divided into small excavators of less than 10 tons, medium and small excavators of 10-20 tons, medium excavators of 20-30 tons, and large excavators of more than 30 tons. Generally speaking, the chassis part of the traveling device of ...

AI Technical Summary

Problems solved by technology

[0004] However, in actual use, it is found that large or super large excavators have the characteristics of relatively large volume and weight, and the weight of the chassis structure often accounts for more than 30% of the weight of the whole machine. Structure, that is, the main frame and the left and right travel frames are welded together, so the distance between the main frame and the left and right travel frames cannot be adjusted, and the main frame and the left and right travel frames cannot be disassembled to decompose the weight. As a result, large or ultra-large excavators are often overweight, ultra-wide or ultra-high when transported by car, which cannot meet the transportation requirements, and there are large safety hazards

Images