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Safety function control method and system for arm-type aerial work platform

A high-altitude work platform and safety function technology, which is applied in the field of control method and control system of boom-type high-altitude work platform safety function, can solve the problems of complex cost of the control system, reduce controllability, etc., achieve cost reduction, simple structure, and improve the overall The effect of vehicle maneuverability

Active Publication Date: 2020-01-14
JIANGSU XCMG CONSTR MASCH RES INST LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] (1) To make the safety function of the control system reach the PLd level at the position of the actuator, it is necessary for each actuator to have a redundant structure and safety-related monitoring components and valves to achieve individual control, and the more the number of actuators, the greater the overall control The more complex and costly the system
[0005] (2) Make the safety function of the control system reach the PLd level at the position of the main valve. If the safety mode is triggered, the main valve will be cut off, the power source of the entire hydraulic system will disappear, and the bodywork will be completely locked, greatly reducing the maneuverability

Method used

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  • Safety function control method and system for arm-type aerial work platform
  • Safety function control method and system for arm-type aerial work platform

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A safety function control method of an arm-type aerial work platform, comprising:

[0045] In the process of launching the operation according to the conventional settings, the monitoring data of wheel steering, rotation, straight arm / telescopic arm luffing, telescopic arm expansion, cantilever lifting, platform rotation, and platform leveling are obtained;

[0046] According to the obtained straight arm / telescopic arm luffing and telescopic arm telescopic monitoring data, determine the action direction of the corresponding actuator, and compare the corresponding preset normal threshold lower upper limit a1, b1, pre-safety threshold lower upper limit a2, b2 and safety threshold Compare the lower upper limit a3 and b3 to obtain the judgment comparison result;

[0047]The normal threshold of the first action direction of the preset actuator is a1, the safety threshold is a3; the pre-safety threshold of the first action direction is a2,

[0048] The normal threshold of th...

Embodiment 2

[0058] A safety function control device for an arm type aerial work platform, comprising:

[0059] The data acquisition module is used to: acquire the monitoring data of wheel steering, rotation, straight arm / telescopic arm luffing, telescopic arm expansion, cantilever lifting, platform rotation, and platform leveling;

[0060] The comparison and judgment module is used for: judging the action direction of the corresponding actuator based on the obtained straight arm / telescopic arm luffing and telescopic arm telescopic monitoring data, and comparing it with the corresponding preset normal threshold lower upper limit (a1, b1), pre-safety Threshold lower upper limit (a2, b2) and safety threshold lower upper limit (a3, b3) are compared to obtain judgment and comparison results; among them, the normal threshold of the first action direction of the preset actuator is a1, the safety threshold is a3, and the first The pre-safety threshold of the action direction is a2; the normal thr...

Embodiment 3

[0068] A safety function control system for a boom-type aerial work platform, including the safety function control device for the boom-type aerial work platform, the safety function control device for the boom-type aerial work platform includes a memory and a processor, the memory is used to store instructions, The instructions are used to control the processor to operate to execute the safety function control method of the boom aerial work platform.

[0069] In some embodiments, the safety function control system of the boom aerial work platform further includes:

[0070] The data monitoring module is used to collect the monitoring data of wheel steering, rotation, straight arm / telescopic arm luffing, telescopic arm expansion, cantilever lifting, platform rotation, and platform leveling, and send them to the control device;

[0071] The actuator includes working cylinders for performing corresponding actions. Each working cylinder is provided with a three-position four-way v...

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Abstract

The invention discloses a safety function control method and system for an arm-type aerial work platform. The safety function control method comprises the following steps: acquiring monitoring data during the operation process according to the conventional setting; judging the action direction of a corresponding actuator according to the acquired monitoring data, and comparing with the upper limita1, b1 of a corresponding preset normal threshold, the upper limit a2, b2 of a pre-safety threshold, and the upper limit a3, b3 of a safety threshold to obtain a comparison result, wherein a3 <a2 <a1<b1 <b2 <b3; and issuing a command to control the position of a three-position four-way valve of the corresponding actuator or cut off a main valve according to the comparison result. The concept ofa pre-safety mode is introduced. Under the premise that a safety-related control system conforms to PLd, through the mode, the maneuverability of the entire vehicle can be taken into account while redundant monitoring components and valve components are reduced, so that a hydraulic system structure is simplified and costs are reduced.

Description

technical field [0001] The invention relates to the technical field of construction machinery control, in particular to a safety function control method and control system of an arm-type aerial work platform. Background technique [0002] Aerial work platforms serve a variety of industries in various countries. CE safety certification is required for circulation in the EU international high-end market. It must comply with the technical specification of CE safety, and the performance level PLr is used as an index to evaluate the safety capability of the product control system. Products with high performance levels will be more competitive in the EU market. Relatively, the higher the safety capability, the higher the specifications of the matching components and the more expensive the price. Redundant channels and double the number of supporting components will not only increase the cost input, but also make the entire control system more complicated. [0003] The safety mode...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66F11/04B66F17/00
CPCB66F11/046B66F17/006
Inventor 陈文鹏王绍腾刘成昊程婷
Owner JIANGSU XCMG CONSTR MASCH RES INST LTD
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