Mechanical-Electric-Hydraulic Coupling Dynamics of Hydraulic Drilling Rig

液壓鑽機機電液耦合動力學

陳光柱(Guangzhu Chen) ； 蔣成林(Chenglin Jiang) ； 苗長偉(Changwei Miao) ； 付林(Lin Fu) ； 齊良釗(Liangzhao Qi)

《中國機械工程學刊》 41卷5期 (2020/10) Pp. 595-604

摘要

The coupling relationship of the hydraulic drilling rig, as a complex mechanical system with mechanical-electric-hydraulic, is very important to its working performance. The internal leakage of the hydraulic motor (a direct drive component of the drilling rig) is easy to appear and difficult to be directly observed, so it is especially important to analyze the working performance of the drilling rig under the internal leakage condition of the hydraulic motor. This paper focuses on the analysis of mechanical-electric-hydraulic dynamics of hydraulic drilling rig under no loading and loading. Firstly, a coupling dynamics model of the drilling rig is established theoretically and then the dynamic response of the drilling rig is analyzed by simulation. Secondly, the leakage sensitivity simulation and analysis of hydraulic motor is performed to explore the impact of the internal leakage of the hydraulic motor on the dynamic response of the drilling rig. Finally, a dynamic response test platform of the drilling rig is built, the experiment result agrees better with the simulation result under different leakage ratios of the hydraulic motor, and the leakage ratio of the hydraulic motor is sensitive to the rotational speed and load torque of the drilling rig.

關鍵字

hydraulic drilling rig ； mechanical-electrical-hydraulic coupling ； dynamics analysis ； hydraulic motor leakage ； sensitivity analysis

並列摘要

液壓鑽機作為一個機電液耦合的複雜機械系統，其耦合關係對其工作效能至關重要。液壓馬達做為鑽機的直接驅動部件，內部容易出現洩漏，並且難以直接觀測，囙此，分析液壓馬達內部洩漏條件下鑽機的工作效能尤為重要。本文對全液壓鑽機在空載和空載條件下的機－電－液的動力特性進行了分析。首先從理論上建立了鑽機的耦合動力學模型，然後通過模擬分析了鑽機的動態響應。其次，對液壓馬達進行洩漏敏感度模擬分析，探討液壓馬達內部洩漏對鑽機動態響應的影響。最後，搭建了鑽機動態響應測試平臺，在不同液壓馬達的洩漏率，實驗結果與模擬結果吻合較好，液壓馬達的洩漏率對鑽機的轉速和負載轉矩非常敏感。