Vehicle body dip angle adjusting unit, oil gas suspension mechanism and mobile crane

Abstract

The invention relates to an automatic leveling oil gas suspension mechanism, which comprises at least two pairs of suspension oil cylinders (12), a vehicle body dip angle adjusting unit (17), a vehicle body traverse dip angle sensor and a control unit, wherein each suspension oil cylinder is provided with a vehicle body dip angle adjusting unit with a balanced oil cylinder (10) correspondingly; and one cavity of the balanced oil cylinder is connected to an oil tank (5) and a leveling operating oil source by a first one-way damper valve (8) and an electronic control switching valve (14), and the other cavity of the balanced oil cylinder (10) is connected to a rodless cavity of each suspension oil cylinder by an electronic control lockup valve (14) and a second one-way damper valve (9). In addition, the invention also provides a mobile crane with an automatic leveling oil gas suspension mechanism. The automatic leveling oil gas suspension mechanism realizes the function of dynamic leveling of various roads, particularly traverse rampways, of the mobile crane effectively, and is simple in operation and high in logicality; and the operation is completed automatically by the control unit, so the running safety is improved obviously, and accidents such as overturn and the like are prevented from occurring.

Description

technical field [0001] The invention relates to a vehicle body inclination adjustment unit and an automatic leveling oil-air suspension mechanism. In addition, the present invention also relates to a mobile crane including the self-leveling oil-pneumatic suspension mechanism. Background technique [0002] Mobile cranes generally refer to lifting equipment that can move freely on the ground, and typically refer to lifting equipment installed on engineering vehicles. Mobile cranes are widely used in the field of construction machinery due to their mobility and flexibility. The oil-pneumatic suspension mechanism of large-tonnage or super-large-tonnage mobile cranes, especially all-terrain cranes, must have the following functions, that is, suspension mechanism lifting, rigid-flexible switching, load driving, buffering and shock absorption, and road condition self-adaptation. Adapt to the requirements of different working conditions of mobile cranes. [0003] The oil-pneumati...

AI Technical Summary

Problems solved by technology

[0008] Another technical problem to be solved by the present invention is to provide a self-leveling oil-pneumatic suspension mechanism, which can dynamically realize the automatic leveling of the cross-slope when the mobile engineering machinery is running on the cross-slope. Adapt to the leveling performance, so that it can effectively prevent major accidents such as rollover due to the insensitivity of the existing oil-pneumatic suspension mechanism to the lateral slope, and effectively improve the safety of mobile construction machinery

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