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| Dynamics model and analysis of the lifting system of automatic catwalk |
| WANG Jie1,2, QIAN Li-qin1,2, CHEN Xin-long3, SUN Qiao-lei1,2, DENG Zi-qiang1,2, FENG Ding1,2 |
1. School of Mechanical Engineering, Yangtze University, Jingzhou 434023, China;
2. Oil and Gas Drilling and Well Completion Tools Research Center of Hubei Province, Jingzhou 434023, China;
3. SJ Petroleum Machinery Co., Sinopec Group, Jingzhou 434000, China |
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Abstract When the field test of rope pulled automatic catwalk was carried out, the load fluctuation of rope was obvious, and it was difficult to complete the lifting of the target weight column. Therefore, the structure and motion characteristics of rope pulled automatic catwalk were analyzed, and dynamic model based on the D'Alemebert principle was established, MATLAB software was used to analyze the influence of the distance between the block on the base and the bottom of the ramp, the hinge position of the transfer arm and the support arm, and the length of the support arm on the load of rope. The analysis results showed that adjusting the position of block on the base to the bottom of the ramp, and reducing the length of support arm could reduce the required force of rope in the process of lifting. According to the analysis results, the structure size of automatic catwalk was adjusted to carry out the field test, the test result showed that the maximum lifting oil pressure of the hydraulic which was decreased by more than 2 MPa, the lifting capacity of automatic catwalk was improved. The analysis and experimental results can guide the design and optimization of rope pulled automatic catwalk.
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Received: 07 May 2016
Published: 28 October 2016
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自动猫道起升系统动力学模型与分析
在对钢丝绳拉升式自动猫道进行现场试验时发现钢丝绳载荷波动明显，无法完成目标重量管柱的起升.为此，分析了钢丝绳拉升式自动猫道的结构与运动特性，并基于达朗贝尔原理建立了自动猫道的动力学模型，采用MATLAB软件进行数值求解并分析了基座上挡块与坡道底端的距离、移送臂与支撑臂的铰接位置、支撑臂长度对钢丝绳载荷的影响，分析得出将基座上挡块调整至坡道底端、合理降低支撑臂长度能有效降低起升过程所需钢丝绳拉力.依据分析结果调整自动猫道结构尺寸后进行现场试验，液压绞车的最大起升油压下降超过2 MPa，自动猫道机起升能力得到提高.该分析与实验结果可为钢丝绳拉升式自动猫道结构设计与优化提供指导.
关键词：
钢丝绳拉升式自动猫道,
达朗贝尔原理,
动力学模型,
结构优化
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