Crane system for constant-torque lifting and lifting overturning buffering device thereof

Abstract

The invention discloses a crane system for constant-torque lifting and a lifting overturning buffering device thereof. The crane system comprises a mounting table, and a lifting arm mounted on the mounting table; the lifting overturning buffering device is arranged between the bottom end part of the lifting arm and the mounting table, and includes an inclined lifting oil cylinder; the bottom end of the lifting oil cylinder is mounted on the mounting table; an extension rod of a piston rod of the lifting oil cylinder is coated with a cylinder; a piston is arranged at the middle part of the cylinder; a spring cavity is in the cylinder on the upper side of the piston; a liquid flow cavity is in the cylinder on the lower side of the piston; an extension rod of the liquid flow cavity is coated with a return spring; a flow leaking port is formed in a cylinder end cover at the end part of the liquid flow cavity; an extension rod in the spring cavity is coated with a buffer spring; and an engine for providing power, a gear pump, an oil tank, an energy storer, and an adjustable constant-pressure valve, a remote control valve and a direction valve for controlling an oil way are mounted in the mounting table. The crane system can enable the lifting arm to reach quicker buffering stop, and achieves stable lifting.

Description

[0001] Technical field: [0002] The invention relates to the field of cranes, and mainly relates to a constant moment lifting crane system and a lifting and turning buffer device thereof. [0003] Background technique: [0004] The crane has the advantages of flexible maneuvering, convenient operation and high efficiency. However, in the process of hoisting the operating object by the crane, the swing of the operating object has always been a problem that needs to be solved. [0005] However, when the existing cranes lift heavy objects, most of them are directly hoisted, and it is inevitable that there will be natural problems in the process. [0006] Or human factors cause pressure fluctuations, impact on the stability of the lifting, and make the moment of lifting unstable, and in the process of lifting the boom, most of them use hydraulic cylinders to lift directly, and the connection structure between them It is a hard connection structure, not only has no buffer, but al...

AI Technical Summary

Problems solved by technology

[0006] Or human factors cause pressure fluctuations, impact on the stability of the lifting, and make the moment of lifting unstable, and in the process of lifting the boom, most of them use hydraulic cylinders to lift directly, and the connection structure between them It is a hard connection structure, not only has no buffer, but also when the lifting encounters obstacles or the lifting needs to stop, the lifting will have a certain inertia and cannot stop immediately, and its inertia enhances the impact

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