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A cable crane descending limit method and the cable crane

A cable crane and position-limiting technology, which is applied in the direction of cable cranes, cranes, load hanging components, etc., can solve problems such as personal and equipment safety accidents, operation errors, command errors, etc., to reduce operation difficulty and intensity, and reduce maintenance Adjustment time, the effect of reducing the probability of misoperation

Active Publication Date: 2021-08-31
杭州国电大力机电工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the dam surface continues to rise during pouring, the lowering limit of the lifting mechanism will also continue to rise, and the height of each dam surface is different. Maintenance personnel cannot frequently manually adjust the lifting and lowering limit. The lifting and lowering limit cannot be protected normally
However, the construction site of hydropower stations works in 24-hour shifts. Commanders and operators work intensively, and it is easy to cause misoperations such as command errors and operation errors due to fatigue. Therefore, there are many uncontrollable factors.
When there is a misoperation, the lower limit of the hoisting machinery cannot normally protect the safety of personnel and equipment on the pouring warehouse surface, which will cause major economic losses, and in serious cases will cause major personal and equipment safety accidents, and even affect the construction progress of the entire hydropower project. influential

Method used

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  • A cable crane descending limit method and the cable crane
  • A cable crane descending limit method and the cable crane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Such as figure 1 with figure 2 As shown, the present embodiment provides a method for lowering and limiting the position of a cable crane, which is used in the construction of a hydropower dam pouring project, including the following steps:

[0049] Set the number i of each dam section, and the drop limit value of the hopper of the cable crane j of the cable crane in each dam section, the drop range of the hopper is within the drop limit value, that is to say, the lowest drop of the hopper to the drop limit value At the corresponding position, it cannot continue to descend, and it will automatically decelerate and stop, so as to play the role of descending limit protection;

[0050]Obtain the position data of the cable machine j, and judge the dam section i where it is located according to the position data of the cable machine j. When judging dam section i, start from 1. If the current position of cable crane j is in dam section 1, go to the next step. If it is not ...

Embodiment 2

[0065] This embodiment provides a cable crane, which is used to realize the lowering limit method of the cable crane in Embodiment 1, and is also used in the construction of a hydropower dam pouring project, including: a cable crane, a main control system and a database.

[0066] Cable cranes, including hoppers, to perform unloading and pouring;

[0067] The main control system includes the cable machine scanning module and the cycle judgment module. The main control system is used to set the number i of each dam section and its corresponding lowering limit value, obtain the position data of the cable machine j, and judge the dam where the cable machine j is located. In section j, the hopper is controlled to descend by the cable machine. The drop range of the hopper is within the lowering limit value. The main control system controls the hopper to reach the preset unloading position through the cable machine, judges the status of the hopper and the dam section, and updates acco...

Embodiment 3

[0080] This embodiment provides a computer device, including a memory and a processor, where a computer program is stored in the memory, and when the processor executes the computer program, the method in any of the foregoing embodiments is implemented. Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented by instructing related hardware through computer programs. Accordingly, the computer program can be stored in a non-volatile computer-readable storage medium, and when the computer program is executed, the method described in any one of the above-mentioned embodiments can be realized. Wherein, any references to memory, storage, database or other media used in the various embodiments provided in the present application may include non-volatile and / or volatile memory. Nonvolatile memory can include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), elec...

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Abstract

The invention discloses a cable crane descending limiting method and a cable crane, and relates to the technical field of cable cranes, comprising the following steps: setting the number of each dam section and the descending limit value of the hopper of the cable crane in each dam section, the hopper The descending range of the cable machine is within the lower limit value; obtain the position data of the cable machine to determine the dam section where the cable machine is located; the cable machine determines the preset unloading position according to the drop limit value of the dam section where it is located; judge the hopper and the dam section Status, update the lowering limit value according to the status of the hopper and dam section. The method provided by the invention can automatically identify and update the lowering limit value of each dam section during the use of the cable crane, so that the hanging tank can automatically decelerate and stop when reaching the lowering limit.

Description

【Technical field】 [0001] The invention relates to the technical field of cable cranes, in particular to a method for limiting the descent of a cable crane and a cable crane. 【Background technique】 [0002] The main construction equipment for hydropower dam pouring is cable crane, portal crane, tower crane, etc. Among these equipment, the cable crane has a large coverage area and high pouring efficiency, and is widely used in the field of material transportation for medium and large hydropower station dams. [0003] The cable crane is the main pouring equipment of the dam, and there are a large amount of construction workers and construction equipment on the working face. In the prior art, a limit switch is set on the reel of the hoisting mechanism as a protection device for the hoisting mechanism. The limit switch is a very important protection device. If the operator of the cable crane fails to stop in time when the hoisting tank is close to the warehouse surface due to mi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C21/00B66C13/48
CPCB66C21/00B66C13/48Y02E10/20
Inventor 祝秋华宣洁琦
Owner 杭州国电大力机电工程有限公司
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