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Arm frame structure fatigue strength monitoring method, device and system and fire truck

A technology of fatigue strength and monitoring equipment, applied in the field of construction machinery, can solve the problems of increasing safety risks, misjudgment, and increasing the complexity of fire trucks

Active Publication Date: 2015-02-04
CHANGSHA ZOOMLION FIRE FIGHTING VEHICLE +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, if the length of use is used as the basis for fatigue failure judgment, it is very likely to cause misjudgment
In addition, the existing method does not have an intelligent early warning mechanism for the structural stress and fatigue strength of the ladder frame (arm) of the fire truck, so that the user must manually record the use frequency and duration of the fire truck, and the maintenance or scrapping of the fire truck is also artificial. Judgment, this greatly increases the complexity of the use and maintenance of fire trucks, and indirectly increases the safety risk of its use

Method used

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  • Arm frame structure fatigue strength monitoring method, device and system and fire truck
  • Arm frame structure fatigue strength monitoring method, device and system and fire truck
  • Arm frame structure fatigue strength monitoring method, device and system and fire truck

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Embodiment Construction

[0022] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0023] figure 1 It is a structural block diagram of the boom structure fatigue strength monitoring system provided by the present invention. Such as figure 1 As shown, the boom structure fatigue strength monitoring system provided by the present invention may include: a detection device 10, which is used to detect the stress value at the detection point of the boom; and a boom structure fatigue strength monitoring device 20, which may include : the receiving device 210 and the decision-making device 220, the receiving device 210 is used to receive the stress value at at least one detection point of the boom structure in the working state; the decision-making d...

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Abstract

The invention discloses an arm frame structure fatigue strength monitoring method, device and system and a fire truck. The monitoring method comprises the following steps: receiving stress value of at least one detection point of an arm frame structure in working state; for each detection point, calculating accumulated fatigue nominal stress frequency thereof according to the stress value thereof; and determining maintenance and / or scrapping of the arm frame according to the accumulated fatigue nominal stress frequency and preset maintenance frequency and / or preset scrapping frequency. The method can prevent the fatigue strength of the arm frame from being misjudged, and the arm frame can be maintained and / or scrapped in time, thereby improving usage efficiency and work security of the arm frame.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a method, equipment, system and fire truck for monitoring the fatigue strength of a boom structure. Background technique [0002] Some construction machinery, such as fire trucks, are generally equipped with retractable ladder ladders or foldable booms, which can be used by firefighters to climb up to put out fires and rescue trapped people. Fire trucks with booms are ideal for high-rise buildings. The main weapon for fire fighting and emergency rescue. When the jib structure is subjected to repeated loads, fatigue failure will occur, which seriously affects the working performance of the jib structure and even threatens its safety. As a special engineering structure, the ladder frame (arm frame) of the fire truck has a great work intensity during fire fighting or rescue operations, and the fire truck is usually used for daily training and actual combat exercises, which make...

Claims

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Application Information

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IPC IPC(8): G01M99/00
Inventor 罗玗琪周磊
Owner CHANGSHA ZOOMLION FIRE FIGHTING VEHICLE
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