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Long-steel-rail hoisting numerical control synchronous centralized control system with electrical anti-swing function

A centralized control system and long rail technology, applied in safety devices, transportation and packaging, load suspension components, etc., can solve problems such as low efficiency requirements, inability to install mechanical anti-swing devices, and affect the use effect, etc., to achieve Safe operation, easy implementation, and simple control effects

Pending Publication Date: 2020-11-20
上海瑞纽机械股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is the exhaust pipe and air source, especially in areas with relatively cold weather, it is easy to produce condensed water, which affects the use effect
In addition, in some hoisting operations, the crane is not used very frequently, the beam frame of the crane is low, and the mechanical anti-swing device cannot be installed. The efficiency requirements of these hoisting operations are not very high. Therefore, it is necessary to design a new anti-sway control mode at this time , can have the characteristics of simple control, easy implementation and remarkable effect

Method used

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  • Long-steel-rail hoisting numerical control synchronous centralized control system with electrical anti-swing function
  • Long-steel-rail hoisting numerical control synchronous centralized control system with electrical anti-swing function
  • Long-steel-rail hoisting numerical control synchronous centralized control system with electrical anti-swing function

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0026] figure 1 It is a schematic diagram of the open-loop anti-swing control mode of the present invention, wherein the translation frequency converter 6 is connected with the translation motor 5, and the rotational speed of the translation motor 5 is controlled by the output frequency of the translation frequency converter 6, thereby controlling the transport speed of the hanging object 10, and the translation frequency conversion The inverter 6 is connected to the PLC 3 through the relay 2, and the start and stop of the translation frequency converters 6 on all cranes 1 are centrally controlled by the PLC 3 through the relay 2.

[0027] image 3 It is a schematic diagram of the anti-swing control of the translational frequency converter of the present invention. The PLC 3 outputs a trigger control signal. By setting the acceleration time, within the set acceleration time, the frequency of the translational frequency converter 6 is increased from zero to the set frequency, a...

no. 2 example

[0030] Such as figure 2 It is a schematic diagram of the closed-loop anti-sway control mode of the present invention, which adds a lifting frequency converter 7 and a lifting motor 8, and the lifting motor 8 is connected with the lifting frequency converter 7, and the rotating speed of the lifting motor 8 is determined by the output frequency Control, and then control the lifting speed of the hanging object 10. The second embodiment is similar to the first embodiment, the difference is that it is not necessary to set the lifting height of the hanging object 10 in advance, and the lifting frequency converter 7 is added, which can collect in real time when the crane 1 performs the lifting operation, The actual lifting height H1 of the hanging object 10 is then fed back to the translation frequency converter 6 of the crane 1, and then the setting of the acceleration and deceleration time in the translation frequency inverter 6 is adjusted by the PLC 3 to prevent the lifting of t...

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Abstract

The invention discloses a long steel rail hoisting numerical control synchronous centralized control system with an electrical anti-swing function. The system involves a crane (1), a relay (2) and a PLC (3), wherein a translation motor (5) is mounted on the crane (1), the PLC (3) is connected with the relay (2), and the relay (2) is connected with the translation motor (5) through a translation frequency converter (6). When the system is used, the swing amount of a lifting hook in a translation process can be restrained through the electrical anti-swing function, the system is a brand new control mode and has the characteristics of being easy to control and implement, and meanwhile, in the long-steel-rail synchronous centralized control lifting operation process, the rail grabbing successrate of a lifting appliance and the field operation efficiency are improved, and safe operation is achieved.

Description

technical field [0001] The invention relates to a long rail hoisting numerical control synchronous centralized control system, more specifically, to a long rail hoisting numerical control synchronous centralized control system with an electrical anti-swing function. Background technique [0002] With the rapid development of my country's railway industry, higher requirements are put forward for the degree of automation control of the rail welding base. Among them, an automatic group crane control mode is proposed for the hoisting of 100-meter or 500-meter-long rails. This not only greatly reduces the manpower for rail hoisting and transportation, but also greatly improves the efficiency of rail hoisting. At the same time, the safety factor of rail hoisting personnel is also significantly improved. For this reason, each rail welding factory adopts the working mode of concentrated group cranes for the hoisting of long rails. During the operation of the hanging rail, the swi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66C13/06B66C13/48B66C15/00
CPCB66C13/063B66C13/48B66C15/00B66C2700/085B66C2700/08
Inventor 郑芳杰丁建华凌沛洪
Owner 上海瑞纽机械股份有限公司
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