Design of the Hydraulic System for the Rise-fall Device in Power Catwalk

Performance of the hydraulic system for the rise-fall device has a direct impact on the reliability of power catwalk. According to the working principle of the rise-fall device, the scheme design and mechanical models of hydraulic system are established. And test the hydraulic model of the rise-fall device, which is simulated in AMESim software. Finally, field experiment is used to verify the simulation results. The analysis results verify the feasibility of the scheme design of the hydraulic system. Introduction of the Rise-Fall Device In petroleum drilling industry, the conveying device of drilling tool known as “the catwalk”, is one of the most important equipment in the drilling tool integration system. It is used to implement the transportation of drilling pipes between the ground and the drilling platform. With the development of drilling technology, the automation degree in power catwalk constantly improves and gradually replaces the traditional way of human power in the delivery of drilling pipes [1, 2]. In this paper, hydraulic system of the rise-fall device in a power catwalk is analyzed and studied. Power catwalk is generally composed of migration device on the ground, the rise-fall device and auxiliary system [3-5]. And the rise-fall device is mainly used to transport drill pipes in the lifting slipway. Fig.1 The structure of the rise-fall device As shown in figure 1, the rise-fall device is mainly composed of traction device, lifting slipway, ramp, supporting pole device and mobile rack. The movement energy of lifting slipway is form the dragging movement of traction device in the ramp and the lifting movement of supporting pole device on the mobile rack. The functions of each part are as follows: (1) Lifting slipway: It is mainly composed of drop prevention device, push block of drilling pipes and slipway. This slipway is not only used to fix drilling pipes, but also provide a migration track for pipes. Ramp Traction device Lifting slipway Supporting pole device Mobile rack Flip arms Push block Drop prevention pole Proceedings of the 3rd International Conference on Material Engineering and Application (ICMEA 2016) Copyright © 2016, the Authors. Published by Atlantis Press. This is an open access article under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/). 477 Advances in Engineering Research, volume 103