CN-121980849-A - Sliding block abrasion monitoring method and device, aerial working equipment and readable storage medium

CN121980849ACN 121980849 ACN121980849 ACN 121980849ACN-121980849-A

Abstract

The application discloses a sliding block abrasion monitoring method and device, overhead working equipment and a readable storage medium, and relates to the technical field of engineering machinery. The method comprises the steps of obtaining working condition data of a sliding block contact pair in a mechanical system, wherein the working condition data comprise at least one of load data, motion attitude data and environment data of the mechanical system, carrying out contact stress simulation through a digital twin model based on the working condition data to obtain stress data of the sliding block to be detected, and determining abrasion change information of the sliding block to be detected according to the stress data and a preset stress-abrasion rate mapping relation. The technical bottlenecks of lagging manual inspection, tedious offline measurement, poor environmental adaptability of an indirect monitoring method and low model mobility are overcome, and the real-time abrasion increment and accumulated loss of the sliding block can be accurately mastered on the premise of not disassembling equipment and not affecting normal operation, so that the running safety, reliability and intelligent operation and maintenance level of the equipment are improved.

Inventors

QU YIFEI
CHEN XIANPING
WANG JIE
ZHENG BO

Assignees

湖南中联重科智能高空作业机械有限公司

Dates

Publication Date: 20260505
Application Date: 20251229

Claims (10)

1. A method of monitoring slider wear, comprising: Acquiring working condition data of a sliding block contact pair in a mechanical system, wherein the working condition data comprises at least one of load data, movement posture data and environment data of an environment where the mechanical system is positioned; based on the working condition data, carrying out contact stress simulation through a digital twin model to obtain stress data of the sliding block to be detected; And determining the abrasion change information of the sliding block to be detected according to the stress data and a preset stress-abrasion rate mapping relation.
2. The method for monitoring the wear of the sliding block according to claim 1, wherein the step of performing contact stress simulation by a digital twin model based on the working condition data to obtain stress data of the sliding block to be detected comprises the steps of: inputting the working condition data into a digital twin model to drive the digital twin model to update to a simulation gesture corresponding to the working condition data; And determining stress data of the contact surface of the sliding block to be detected through finite element simulation based on the updated digital twin model.
3. The method of claim 1, further comprising a step of constructing a stress-wear rate map, the step of constructing comprising: acquiring a plurality of groups of sliding block abrasion test data, wherein each group of sliding block abrasion test data comprises a preset contact stress and a corresponding abrasion rate; dividing a continuous numerical range of the contact stress into a plurality of discrete stress regions by taking a plurality of preset contact stresses corresponding to the plurality of groups of sliding block wear test data as reference points; And assigning a representative wear rate to each stress interval, wherein for each stress interval, any contact stress falling into the stress interval is mapped to the assigned representative wear rate of the stress interval.
4. The method for monitoring wear of a slider according to claim 1, wherein determining the information of the wear change of the slider to be detected according to the stress data and a preset stress-wear rate mapping relationship includes: Inquiring a preset stress-wear rate mapping relation according to the stress data to obtain the current wear rate of the sliding block to be detected; And determining the abrasion increment of the sliding block to be detected in the current monitoring period as abrasion change information based on the current abrasion rate and the sliding distance of the sliding block to be detected in the current monitoring period.
5. The slider wear monitoring method of claim 1 further comprising: Determining the size variation of the sliding block to be detected in a digital twin model based on the wear variation information; updating the geometric parameters of the sliding block to be detected in the digital twin model according to the size variation; And carrying out contact stress simulation of the next monitoring period based on the updated digital twin model.
6. The slider wear monitoring method of claim 1 further comprising: Determining the accumulated wear amount of the sliding block to be detected based on the wear change information in a plurality of monitoring periods; Determining the residual allowable abrasion loss of the sliding block to be detected according to the difference value between a preset abrasion threshold value and the accumulated abrasion loss; determining the wear rate characteristics of the sliding block to be detected based on wear change information in a historical preset period; and predicting the residual service life of the sliding block to be detected based on the wear rate characteristic and the residual allowable wear amount.
7. The method of slider wear monitoring as in claim 6 further comprising: and generating maintenance early warning information and/or equipment control instructions for controlling the mechanical system according to the wear change information and/or the residual service life.
8. A slider wear monitoring device, comprising: The system comprises a data acquisition module, a control module and a control module, wherein the data acquisition module is used for acquiring working condition data of a sliding block contact pair in a mechanical system, and the working condition data comprises at least one of load data, movement posture data and environment data of the environment of the mechanical system; The stress simulation module is used for carrying out contact stress simulation through a digital twin model based on the working condition data to obtain stress data of the sliding block to be detected; and the wear determining module is used for determining the wear change information of the sliding block to be detected according to the stress data and a preset stress-wear rate mapping relation.
9. An aerial working device, comprising: A slide block; The slider wear monitoring device of claim 8.
10. A machine-readable storage medium having stored thereon instructions for causing a machine to perform the slider wear monitoring method according to any one of claims 1 to 7.

Description

Sliding block abrasion monitoring method and device, aerial working equipment and readable storage medium Technical Field The application relates to the technical field of engineering machinery, in particular to a method and a device for monitoring slider abrasion, overhead working equipment and a readable storage medium. Background In the field of high-altitude operation machinery, the reliability and the service life of an arm support system are the cores for guaranteeing the safe and efficient operation of equipment. As a key component for telescopic guiding and supporting of the arm support, the abrasion state of the sliding block directly influences the positioning precision, running stability and structural safety of the whole machine. However, the prior art for monitoring the wear of the sliding block mainly relies on periodic manual shutdown inspection or off-line measurement, and the methods have obvious hysteresis and subjectivity, so that real-time sensing and quantitative evaluation of the wear state cannot be realized. Although some researches attempt to introduce methods such as vibration analysis, image recognition or finite element simulation into the state monitoring of industrial equipment, the schemes are difficult to adapt to complex working conditions of the aerial working platform, such as the field, the variability and the high load, due to poor environment anti-interference capability, low modeling complex mobility or incapability of realizing online real-time calculation. Therefore, the technical problem to be solved is long-term faced in the field, namely, how to realize real-time, online and accurate monitoring and service life prediction of the abrasion degree of the arm support sliding block of the high-altitude operation mechanical arm support on the premise of not disassembling and not influencing the normal operation of the equipment, so as to promote the operation and maintenance of the equipment to span from the traditional periodic maintenance or post-maintenance to the predictive maintenance based on the state. Disclosure of Invention The embodiment of the application aims to provide a sliding block abrasion monitoring method, a sliding block abrasion monitoring device, high-altitude operation equipment and a readable storage medium, which are used for solving the technical problem of how to monitor the abrasion degree of a sliding block of a cantilever crane of a high-altitude operation platform in real time and accurately under the conditions of continuous machine and no disassembly. To achieve the above object, a first aspect of the present application provides a method for monitoring wear of a slider, including: Acquiring working condition data of a sliding block contact pair in a mechanical system, wherein the working condition data comprises at least one of load data, movement posture data and environment data of an environment where the mechanical system is positioned; Based on working condition data, carrying out contact stress simulation through a digital twin model to obtain stress data of the sliding block to be detected; And determining the wear change information of the sliding block to be detected according to the stress data and a preset stress-wear rate mapping relation. In the embodiment of the application, based on working condition data, the contact stress simulation is performed through a digital twin model to obtain the stress data of the sliding block to be detected, and the method comprises the following steps: Inputting the working condition data into the digital twin model to drive the digital twin model to update to the simulation gesture corresponding to the working condition data; and determining stress data of the contact surface of the sliding block to be detected through finite element simulation based on the updated digital twin model. In the embodiment of the application, the sliding block wear monitoring method further comprises a construction step of a stress-wear rate mapping relation, and the construction step comprises the following steps: acquiring a plurality of groups of sliding block abrasion test data, wherein each group of sliding block abrasion test data comprises a preset contact stress and a corresponding abrasion rate; dividing a continuous numerical range of the contact stress into a plurality of discrete stress regions by taking a plurality of preset contact stresses corresponding to a plurality of groups of sliding block wear test data as reference points; a representative wear rate is assigned to each stress interval, wherein for each stress interval, any contact stress falling within the stress interval is mapped to the assigned representative wear rate for the stress interval. In the embodiment of the application, according to the stress data and the preset stress-abrasion rate mapping relation, the abrasion change information of the sliding block to be detected is determined, and the method comprises the following ste