Oscillating suspension system of crane

Abstract

This invention discloses an oscillating suspension system of crane, including a chassis of vehicle, front and rear suspensions. It is characterized that the front suspension includes a front suspension support fixed to the chassis. The front suspension support is rigidly connected with a front drive bridge. The rear suspension is articulated with the support via a pin shaft. The direction of the pin shaft is perpendicular to the direction of a wheel shaft. Two locking oil tanks are symmetrically mounted at two sides of the pin shaft and between the rear suspension and the chassis. A connecting conduit of a chamber with rod and a chamber without rod of the locking oil tank is provided with a control valve set controlled by an electric control system. The rear suspension is rigidly connected with a rear drive bridge. The oscillating suspension system of crane provided by this invention is characterized that it can be flexibly applied to the crane to work at different pavements and under different bearing changes and it has simple structure, strong bearing ability, convenient distribution and low manufacturing cost.

Description

Technical field [0001] The invention relates to a heavy-duty vehicle, in particular to a suspension system of a crane. Background technique [0002] When the crane is under load traveling and other working conditions, the axle load of the whole machine is transferred, and the single axle load can reach 80,000 ~ 90,000 kg. The use of traditional leaf springs, spiral springs or oil-gas springs and other structural forms will make the suspension system components huge in size, high manufacturing costs, and occupy a large space, which cannot be realized in structural design. However, if the front and rear suspensions are fully rigidly connected, it will lead to: [0003] (1) The suspension system loses its shock absorption and buffering functions, and the ride and operation comfort of the whole machine is poor; [0004] (2) When the whole machine is driving and working on uneven roads, the single wheel will be suspended, which will cause the deterioration of wheel load distribution, ...

AI Technical Summary

Problems solved by technology

The use of traditional leaf springs, coil springs or oil-gas springs will make the components of the suspension system large in size, high in manufacturing costs, and occupy a large space, which cannot be realized in structural design.

However, if the front and rear suspensions are fully rigidly connected, it will result in:

[0003] (1) The suspension system loses the shock absorption and buffering functions, and the ride and operation comfort of the whole machine is poor;

[0004] (2) When the whole machine is running and working on uneven roads, a single wheel will appear in the air, resulting in deterioration of wheel load distribution, damage to related components, and at the same time reducing the adhesion performance of the whole machine, resulting in loss of engine power and lower power performance of the whole machine;

[0005] (3) When the whole machine is working on a sloped site (driving with load and working without outriggers), the deviation of the center of gravity of the whole machine will lead to poor stability of the whole machine and reduce the lifting capacity of the whole machine

Although the cooperation of the main and auxiliary springs can solve the problem of no-load and load-carrying of light-duty trucks, because it still relies on springs as a replacement link for the suspension, it still needs huge springs for heavy loads, so this structure does not It cannot solve the problem of heavy-duty vehicles, especially cranes, and the change of unloaded loads

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