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Tower crane speed regulating method, device and system

A technology of tower crane, speed regulation method, which is applied in the direction of transportation and packaging, load hanging components, etc., and can solve problems such as difficult parking

Active Publication Date: 2015-01-07
HUNAN SANY TOWER CRANE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing frequency conversion + eddy current speed regulation method requires the operator to set different slewing speed gears, and then apply different DC voltage values ​​to the eddy current brake of the slewing motor to stop; if the operator is not familiar with the gears Difficult to park quickly and efficiently

Method used

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  • Tower crane speed regulating method, device and system
  • Tower crane speed regulating method, device and system

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Embodiment Construction

[0020] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0021] method embodiment

[0022] figure 1 The flowchart of the tower crane speed regulation method that the embodiment of the present invention provides; figure 1 As shown, the tower crane speed regulation method in this embodiment may include the following steps:

[0023] S10: Determine whether there is instruction information for selecting frequency conversion reverse gear; the instruction information indicates that the operator has selected "frequency conversion reverse gear", that is, the parking operation of frequency conversion reverse gear is allowed;

[0024] S11: After determining that there is the indication information, judge whether the tower crane is in the reverse gear state a...

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Abstract

The invention discloses a tower crane speed regulating method, device and system. A parking control method comprises the steps that whether a tower crane is in the reverse gear state or not is judged according to a handle gear detected in real time and parameters for representing the speed of the tower crane; after the phenomenon that the tower crane is in the reverse gear state is determined, a direct-current voltage value output to a variable frequency motor is determined according to the handle gear detected in real time, and therefore the variable frequency motor outputs an eddy current value for braking moment force; changes of the parameters for representing the speed of the tower crane are controlled according to the handle gear detected in real time. According to the tower crane speed regulating method, device and system, reverse-gear parking control over the tower crane can be achieved.

Description

technical field [0001] The invention relates to the field of tower cranes, in particular to a speed regulating method and system for tower cranes. Background technique [0002] The speed regulation methods of the existing tower crane slewing mechanism generally include: a drag system consisting of a two-speed motor + hydraulic coupler, a drag system consisting of a winding motor + an eddy current brake, and a drag system consisting of a frequency conversion + eddy current speed regulation Wait. Among them, the winding motor + eddy current brake uses the principle of reducing the electric torque to decelerate, and the effect is very limited; the two-speed motor + hydraulic coupler uses the method of motor shifting and reverse gear to achieve deceleration and parking, and the in-position impact is relatively large , often cause damage to the transmission shaft and reducer; frequency conversion + eddy current speed regulation is a better drag method, the acceleration and decel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C13/22
CPCB66C13/16B66C13/22
Inventor 缪思怡姜连才田清文
Owner HUNAN SANY TOWER CRANE CO LTD
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