Frame structure and crane

Abstract

The invention discloses a frame structure and a crane, relates to the field of engineering machinery, and is used for optimizing a structure of a traditional frame body. The frame structure comprises a frame body and support leg structures; the support leg structures are arranged at the end parts of the length direction of the frame body, and are rotationally or slidingly connected with the frame body; the support leg structures are located in an extending state; and the length directions of the support leg structures form acute angles with the length direction and the width direction of the frame body, so that the total length of the frame structure is larger than the length of the frame body, and the total width of the frame structure is larger than the width of the frame body. Under the precondition of not changing the size of the frame body, the length and the width sizes of the frame structure can be synchronously increased, so that the span of the crane is increased; and the weights of the support leg structures are far lower than the weight of the frame body in the prior art corresponding to the same span, so that the lifting weight can be increased when the span is increased.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a vehicle frame structure and a crane. Background technique [0002] As the tonnage of the crane continues to increase, in terms of stability, the longer the frame, the better. This can increase the span of the front and rear outriggers and improve the stability of the crane. Traditional off-road tire cranes are set up as "H"-shaped telescopic outriggers. The fixed outrigger boxes are located at the front and rear ends of the frame, and the movable outriggers are arranged in the fixed outriggers, which can be retracted back and forth in the lateral direction of the vehicle. [0003] The inventors have found that there are at least the following problems in the prior art: with the continuous increase in the hoisting performance requirements of cranes, in order to ensure stability, it is necessary to increase the span of the vehicle and increase the frame, but this will lead to...

AI Technical Summary

Problems solved by technology

[0003] The inventors have found that there are at least the following problems in the prior art: with the continuous increase in the hoisting performance requirements of cranes, in order to ensure stability, it is necessary to increase the span of the vehicle and increase the frame, but this will lead to an increase in the weight of the crane itself, which in turn leads to The weight of the hoist is reduced, and the load carrying capacity of the tire is reduced

In addition, if figure 1 As shown, after the length of the frame, the approach angle and departure angle of the vehicle decrease, and the off-road driving ability decreases

Images