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Lateral load protection device and method for crane

A side load and protection device technology, applied in safety devices, load suspension components, transportation and packaging, etc., can solve problems such as damage to related components, and achieve the effect of avoiding damage and improving safety redundancy.

Active Publication Date: 2012-03-28
SANY AUTOMOBILE HOISTING MACHINERY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to propose a side load protection device and method for a crane to solve the problem in the prior art that the related components are easily damaged due to side load overload

Method used

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  • Lateral load protection device and method for crane
  • Lateral load protection device and method for crane
  • Lateral load protection device and method for crane

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Embodiment Construction

[0037] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be pointed out that the description and sequence of specific structures in this section are only descriptions of specific embodiments, and should not be considered as limiting the protection scope of the present invention.

[0038] Please refer to figure 1 , figure 1 A structural block diagram of a side load protection device for a crane provided by an embodiment of the present invention.

[0039] As shown in the figure, the side load protection device 10 includes:

[0040] An acquisition unit 11, configured to acquire the oil inlet pressure and oil outlet pressure of the rotary motor, and send them to the calculation unit 12;

[0041] The calculation unit 12 is used to calculate the current side load moment M o...

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Abstract

The invention relates to the technical field of engineering machinery, and discloses a lateral load protection device and a method for a crane. The lateral load protection device comprises: a calculating unit which is used for calculating a current lateral load moment of a crane; a judging unit which is used for judging whether the lateral load moment is higher than a predetermined value; a treating unit which is used for locking actions for increasing the lateral load when the lateral load moment is higher than the predetermined value, and for permitting actions for increasing the lateral load when the lateral load moment is lower than the predetermined value. The lateral load protection device for a crane provided by embodiments of the invention calculates a current lateral load moment when a crane is working through a pressure difference between charged oil and discharged oil of a rotary motor and other parameters, locks actions for increasing the lateral load when the lateral load moment is higher than a predetermined value, thus avoids damage of a big arm and a derricking cylinder caused by the excessive high lateral load, and improves the safety redundancy when the crane is working.

Description

technical field [0001] The invention relates to the technical field of construction machinery, in particular to a lateral load protection device and method for a crane. Background technique [0002] At present, the force limiter (moment limiter) of the crane only detects the vertical load. When the vertical lifting moment reaches the vertical rated load, through the detection calculation and analysis of the sensor and the controller, the controller will send out an audible and visual alarm signal and lock The action of increasing the actual vertical load moment, however, the existing force limiter does not have the function of detecting and overloading the lateral load. [0003] However, in the actual use of cranes, it is often necessary to pull heavy objects obliquely to generate side loads. Since there is no side load detection and protection device, it is easy to cause failures such as damage to the boom and luffing cylinder. [0004] Therefore, how to avoid the lateral ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C15/00B66C15/06
Inventor 万钦侯铮郑建明
Owner SANY AUTOMOBILE HOISTING MACHINERY
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