Method and system for intelligently reducing speed of grab bucket/carrier loader and lifting-switching mechanism

A technology of opening and closing mechanism and carrier, which is applied in the field of cranes and ship unloaders. It can solve the problems of slow feedback speed, low precision of deceleration system, and low precision, and achieves a wide range of applications.

Inactive Publication Date: 2015-09-16
HUADIAN HEAVY IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention lies in the technical problems of low accuracy and slow feedback speed of the existing intelligent deceleration method, thereby providing a deceleration method with high measurement accuracy and fa

Method used

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  • Method and system for intelligently reducing speed of grab bucket/carrier loader and lifting-switching mechanism
  • Method and system for intelligently reducing speed of grab bucket/carrier loader and lifting-switching mechanism
  • Method and system for intelligently reducing speed of grab bucket/carrier loader and lifting-switching mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Such as figure 1 As shown, a method for realizing the intelligent deceleration of the grab bucket / carrier in the lifting opening and closing mechanism includes the following steps:

[0064] Obtain the real-time position related values ​​of the hoisting rope 4 and the opening and closing rope 9, and obtain the real-time rotational speed related values ​​of the hoisting motor 1 and the opening and closing motor 6;

[0065] According to the real-time position correlation value of hoisting rope 4 and opening and closing rope 9, calculate the real-time position of grab bucket 20 / carrying vehicle, calculate described grab bucket 20 according to the real-time rotational speed correlation value of hoisting motor 1 and opening and closing motor 6 / The real-time speed of the carrier; calculate the distance that the grab bucket 20 / carrier needs to decelerate according to the real-time position and real-time speed, and determine the position where the grab bucket 20 / carrier starts ...

Embodiment 2

[0087] A system to realize the intelligent deceleration of the grab bucket / carrier in the lifting opening and closing mechanism,

[0088] Such as figure 2 As shown, the acquisition unit is used to acquire the real-time position related values ​​of the hoisting rope 4 and the opening and closing rope 9, and acquire the real-time rotational speed related values ​​of the hoisting motor 1 and the opening and closing motor 6;

[0089] The calculation unit is used to calculate the real-time position of the grab bucket 20 / carrier according to the real-time position related values ​​of the lifting rope 4 and the opening and closing rope 9, and calculate the real-time position of the grab bucket 20 / carrying vehicle according to the real-time rotational speed related values ​​of the lifting motor 1 and the opening and closing motor 6 The real-time speed of the grab bucket 20) / carrier; calculate the distance that the grab bucket 20 / carrier needs to decelerate according to the real-time ...

Embodiment 3

[0100] A system for realizing intelligent deceleration of the grab bucket / carrier in the lifting opening and closing mechanism, including

[0101] A plurality of encoders are used to respectively detect the real-time position related values ​​of each hoisting rope 4 and each opening and closing rope 9, and detect the real-time rotational speed related values ​​of the hoisting motor 1 and the opening and closing motor 6;

[0102] The processor is connected with the encoder, and is used to calculate the real-time position of the hoisting rope 4 and the opening and closing rope 9 according to the real-time position related value, and calculate the hoisting motor 1 and the opening and closing motor 6 according to the real-time rotational speed related value According to the real-time position and real-time speed, calculate the distance that the grab bucket 20 / carrier needs to decelerate, determine the position where the grab bucket 20 / carrier starts to decelerate according to the d...

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Abstract

The invention discloses a method and system for intelligently reducing the speed of a grab bucket/carrier loader of a lifting-switching mechanism, and the lifting-switching mechanism. The method comprises the following steps: acquiring relevant values of real-time positions of a lifting rope and a switching rope, and acquiring relevant values of real-time rotation speeds of a lifting motor and a switching motor; then calculating the real-time position of the grab bucket/carrier loader and the real-time speed of the grab bucket/carrier loader; then calculating the distance with the need of speed reduction of the grab bucket/carrier loader, and determining the position at which the speed of the grab bucket/carrier loader begins to be reduced according to the distance with the need of speed reduction; judging whether the real-time position of the grab bucket/carrier loader is overlapped with the position with the need of speed reduction, and outputting the control command at the beginning of speed reduction of the grab bucket/carrier loader in overlapping. In the process, the position change of a steel wire rope can be detected accurately in real time, and moreover, the calculation process is simple, so that the feedback speed by the whole speed reduction method is very high; furthermore, the position and distance with the need of speed reduction are determined by the real-time position and real-time speed of the grab bucket/carrier loader, so that the method and the system have relatively good precision.

Description

technical field [0001] The invention belongs to the technical field of ship unloaders and cranes, and in particular relates to a method, a system and a lifting opening and closing mechanism for realizing intelligent deceleration of a grab bucket / carrier. Background technique [0002] The grab and carrier of the ship unloader usually move at a uniform acceleration, and before reaching their respective stop positions, they must first decelerate to ensure the normal stop of the grab and carrier. [0003] At present, the ship unloaders used in China are mainly mechanical differential ship unloaders. Most of the grabs and carriers of this ship unloader have no intelligent deceleration function. Usually, a fixed deceleration position is set to limit the deceleration. When the grab and the carrier vehicle reach their respective deceleration positions, they will be forced to decelerate. For this deceleration method, if the fixed deceleration limit positions of the grab bucket and th...

Claims

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Application Information

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IPC IPC(8): B66C13/22B66C13/40B66C13/48B66C13/46
CPCB66C13/22B66C13/40B66C13/46B66C13/48
Inventor 周铁梁刘文超陈超袁彦青叶阜任改运韦公勋
Owner HUADIAN HEAVY IND CO LTD
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