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A system and method for crane brake safety monitoring and control

A safety monitoring and brake technology, applied in the direction of brake type, safety device, mechanical equipment, etc., can solve the problems of heavy lifting device, loss of braking torque, limited stroke, etc., to ensure safe use, reduce maintenance and manufacturing costs, structure simple effect

Active Publication Date: 2021-09-17
宁波市凹凸重工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current automatic compensation device of the brake can compensate for a limited stroke. When the limit stroke is reached, that is, if the lifting height of the push rod is less than 5mm, the crane lifting mechanism will lose the braking torque.
[0005] For the safety hazard that the crane hoisting mechanism loses the braking torque after the automatic compensation stroke exceeds the limit stroke due to the wear of the brake pads, at present, most of the brakes are installed with multiple sets of brakes. When one brake fails, another brake is used. Emergency braking; this braking method is intuitive and effective, but the multi-installation of brakes and brake wheels will greatly increase the manufacturing cost and maintenance cost of the crane, and at the same time affect the volume mechanism of the crane lifting device, and the entire lifting device will appear more cumbersome

Method used

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  • A system and method for crane brake safety monitoring and control
  • A system and method for crane brake safety monitoring and control
  • A system and method for crane brake safety monitoring and control

Examples

Experimental program
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Embodiment 1

[0057] This embodiment provides a system for safety monitoring and control of crane brakes, which is used to solve the problem of potential safety hazards when multiple sets of brakes need to be installed to solve the brake torque loss, such as figure 1 to image 3 As shown, the system includes:

[0058] A system for crane brake safety monitoring and control, comprising: a collection device, a sending device, a PLC, a lifting mechanism, and an alarm device;

[0059] The collection device is used to collect the elongation of the brake spring when the brake is applied;

[0060] The sending device is used to send the collected elongation of the brake spring to the PLC when the brake is applied;

[0061] PLC, used to control the stop of the lifting mechanism when the elongation of the brake spring is equal to the sum of the limit compensation stroke and the lifting height of the push rod when the brake is applied, and send a preset alarm signal to the alarm device;

[0062] Th...

Embodiment 2

[0088] This embodiment provides a method for crane brake safety monitoring and control, such as figure 1 , Figure 4 as well as Figure 5 As shown, the method includes the steps of:

[0089] A method for crane brake safety monitoring and control, comprising the steps of:

[0090] S1: Collect the elongation of the brake spring when the brake is applied;

[0091] S2: Send the collected elongation of the brake spring to the PLC when the brake is applied;

[0092] S3: Judging by PLC whether the elongation of the brake spring is equal to the sum of the limit compensation stroke and the lifting height of the push rod when the brake is applied;

[0093] S4: If the elongation of the brake spring is equal to the sum of the limit compensation stroke and the lifting height of the push rod when the brake is applied, control the lifting mechanism to stop lifting, and send a preset alarm signal to the alarm device;

[0094] Further, step S1 includes:

[0095] S11: Acquiring positio...

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Abstract

The invention provides a system for crane brake safety monitoring and control, which belongs to the technical field of crane control and includes: a collection device, a sending device, a PLC, a lifting mechanism, and an alarm device; The compression amount of the moving spring; the sending device is used to send the collected compression amount of the brake spring when the brake is released and the elongation amount of the brake spring when the brake is applied to the PLC; the PLC, when the brake is applied, the compression amount is equal to the limit compensation The sum of the stroke and the lifting height of the push rod controls the lifting mechanism to stop lifting, and sends a preset alarm signal to the alarm device; the alarm device is used to alarm the serious wear of the brake pads. The system can monitor the wear of the brake pads by collecting the compression of the brake springs, and can drive and stop the lifting of the crane according to the wear of the brake pads. When the wear of the brake pads is serious, it will remind The staff replaced the brake pads in time.

Description

technical field [0001] The invention relates to the technical field of crane control, in particular to a system and method for safety monitoring and control of crane brakes. Background technique [0002] Cranes are indispensable equipment in the modern industrial production process. In order to adapt to various complex working environments, designers will install safety devices in each mechanism of the crane to reduce the accident rate in the production process. [0003] As one of the important safety devices of the bridge crane, the brake controls the moving speed of the heavy objects up and down. In the process of frequent braking, the continuous friction between the brake pad and the brake wheel will inevitably cause wear and reduce the braking torque. [0004] In order to reduce unnecessary trouble and waste caused by frequent replacement or adjustment of brake pads, most brakes at home and abroad are now equipped with automatic compensation devices. But the stroke tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D5/08B66C13/16B66C15/06F16D66/02
CPCB66C13/16B66C15/065B66D5/08F16D66/021
Inventor 孙成军邱武建朱帅
Owner 宁波市凹凸重工有限公司