本文關(guān)鍵詞：旋挖鉆機主卷揚勢能回收系統(tǒng)研究　出處：《吉林大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 旋挖鉆機 主卷揚 勢能回收 邏輯門限能量控制策略

【摘要】：旋挖鉆機是樁基礎(chǔ)施工工程中應(yīng)用最廣泛的機電液一體化的大型工程機械，可鉆進土層、卵石層、巖石層等復(fù)雜多變的地層，對我國大部分地區(qū)的不同的地質(zhì)工程都具有很好的適應(yīng)性。在我國基礎(chǔ)設(shè)施建設(shè)正火熱進行的大背景下，旋挖鉆機作為樁基礎(chǔ)施工中的寵兒便成為大批工程業(yè)主的欽定施工設(shè)備，其節(jié)能控制技術(shù)也備受關(guān)注。主卷揚系統(tǒng)是旋挖鉆機的主要工作裝置之一，在工作過程中要進行反復(fù)的提升和下放，下放過程中大量的重力勢能都以熱能的形式消耗在平衡閥的節(jié)流閥閥口上，這樣不僅造成了能量的浪費，同時對系統(tǒng)的作業(yè)性能也造成很大的影響。基于以上原因，本文將采用二次元件泵/馬達配合液壓儲能元件液壓蓄能器的回收方式對主卷揚下放工況鉆桿與鉆具下放的重力勢能進行回收。本文研究的主要內(nèi)容如下： 1、借鑒旋挖鉆機主卷揚開式液壓系統(tǒng)、控制閥控制的主卷揚回路以及利用二次元件泵/馬達實現(xiàn)能量的回收和釋放的方法，確定了旋挖鉆機主卷揚勢能回收的液壓系統(tǒng)圖，并闡述了其具體工作原理。根據(jù)勢能回收系統(tǒng)的設(shè)計方案，，以某型旋挖鉆機為原型，建立了勢能回收系統(tǒng)關(guān)鍵元件的數(shù)學(xué)模型。 2、建立了發(fā)動機、二次元件泵/馬達、負載、平衡閥等勢能回收系統(tǒng)主要元件的AMESim模型。依賴于所建立的平衡閥AMESim模型，通過仿真分析了節(jié)流孔徑、彈簧剛度、過流面積對平衡閥性能的影響。 3、對傳統(tǒng)的旋挖鉆機下放過程中釋放的重力勢能在Matlab中進行了計算，得出下放勢能很可觀的結(jié)論；搭建了傳統(tǒng)旋挖鉆機主卷揚傳統(tǒng)系統(tǒng)的仿真模型。 4、對回收系統(tǒng)采用了基于邏輯門限的能量控制策略，確定了合理的邏輯門限參數(shù)，分析了系統(tǒng)的工作模式，制定了系統(tǒng)工作模式轉(zhuǎn)換流程圖，建立了邏輯門限值仿真控制模型。仿真結(jié)果表明，采用基于邏輯門限的能量控制策略的回收系統(tǒng)的燃油經(jīng)濟性與傳統(tǒng)結(jié)構(gòu)相比提高了12.8%。
[Abstract]:Rotary drilling rig is the most widely used mechatronic and hydraulic engineering machinery in pile foundation construction engineering. It can be drilled into the soil layer, pebble layer, rock stratum and other complex and changeable strata. It has good adaptability to different geological projects in most areas of our country. As the favorite of pile foundation construction, rotary drilling rig has become a large number of engineering owners' construction equipment, and its energy-saving control technology is also concerned. The main hoisting system is one of the main working devices of rotary drilling rig. In the process of work to be repeatedly promoted and lowered a large number of gravity potential energy in the form of heat energy consumption in the balance valve throttle valve this not only caused a waste of energy. At the same time, the system also has a great impact on the performance of the system. Based on the above reasons. In this paper, the secondary component pump / motor combined with the hydraulic accumulator is used to recover the gravity potential energy of the drill pipe and the drill tool under the main hoisting condition. The main contents of this paper are as follows: 1. Draw lessons from the main hoisting hydraulic system of rotary drilling rig, the main hoisting loop controlled by control valve and the method of energy recovery and release by using secondary component pump / motor. The hydraulic system diagram of the main hoisting potential energy recovery of rotary drilling rig is determined, and its working principle is expounded. According to the design scheme of the potential energy recovery system, a rotary drilling rig is used as the prototype. The mathematical model of key components of potential energy recovery system is established. 2. The AMESim model of the main components of the engine, secondary component pump / motor, load, balance valve and so on is established, which depends on the AMESim model of the balance valve. The effects of throttle diameter, spring stiffness and flow area on the performance of the balancing valve are analyzed by simulation. 3. The gravity potential energy released by traditional rotary drilling rig is calculated in Matlab, and the conclusion is obtained that the lower potential energy is considerable. The simulation model of the main hoisting system of the traditional rotary drilling rig is built. 4. The energy control strategy based on logic threshold is adopted for the recovery system, the reasonable logic threshold parameters are determined, the working mode of the system is analyzed, and the flow chart of system working mode conversion is made. The simulation model of logic threshold value is established. The simulation results show that the fuel economy of the recovery system based on the logic threshold energy control strategy is increased by 12. 8% compared with the traditional structure.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TU67

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