【摘要】：當(dāng)前，液壓技術(shù)作為實(shí)現(xiàn)現(xiàn)代傳動(dòng)與控制的關(guān)鍵基礎(chǔ)技術(shù)之一，已經(jīng)成為農(nóng)林機(jī)械、工程建設(shè)機(jī)械及國(guó)防尖端產(chǎn)品等不可缺少的重要基礎(chǔ)。對(duì)液壓元件的改進(jìn)與創(chuàng)新是推動(dòng)液壓技術(shù)發(fā)展的重要方向，本課題從‘雙定子’思想出發(fā)，力圖打破原有齒輪馬達(dá)的結(jié)構(gòu)，實(shí)現(xiàn)在不改變輸入流量的情況下，對(duì)齒輪馬達(dá)的轉(zhuǎn)速調(diào)節(jié)，從而探討出一種新型結(jié)構(gòu)的內(nèi)外嚙合齒輪馬達(dá)。該新型結(jié)構(gòu)的齒輪馬達(dá)，與傳統(tǒng)的齒輪馬達(dá)的區(qū)別是：該馬達(dá)在一個(gè)殼體中，有內(nèi)嚙合齒輪馬達(dá)和外嚙合齒輪馬達(dá)兩個(gè)馬達(dá)，兩馬達(dá)可以單獨(dú)工作，也可聯(lián)合工作。該馬達(dá)僅通過(guò)切換自己不同的連接方式就可以實(shí)現(xiàn)多級(jí)轉(zhuǎn)速和多級(jí)轉(zhuǎn)矩的輸出，省去了節(jié)流閥、減壓閥等耗能元件，減少了能源的浪費(fèi)，提高了效率。 文中首先確定了內(nèi)外嚙合齒輪馬達(dá)的工作原理以及結(jié)構(gòu)，推導(dǎo)出了單個(gè)內(nèi)嚙合齒輪馬達(dá)與單個(gè)外嚙合齒輪馬達(dá)的排量、轉(zhuǎn)速以及輸出扭矩的理論計(jì)算方法與公式，對(duì)該齒輪馬達(dá)的結(jié)構(gòu)進(jìn)行了優(yōu)化設(shè)計(jì)，并結(jié)合設(shè)計(jì)要求，選定出該馬達(dá)的主要零件的參數(shù)與尺寸。然后對(duì)齒輪的徑向力展開(kāi)討論研究，分別對(duì)外嚙合齒輪馬達(dá)徑向力與內(nèi)嚙合齒輪馬達(dá)徑向力的計(jì)算公式進(jìn)行推導(dǎo)演算，根據(jù)樣機(jī)的主要零部件的尺寸參數(shù)，計(jì)算出樣機(jī)的齒輪徑向力，對(duì)該馬達(dá)的主要零件的力學(xué)強(qiáng)度進(jìn)行了校核，并運(yùn)用Solidworks的simulation仿真軟件對(duì)月牙板的力學(xué)性能進(jìn)行了模擬仿真。最后對(duì)齒輪馬達(dá)的泄漏途徑、大小進(jìn)行了詳細(xì)的說(shuō)明和介紹，并對(duì)齒輪馬達(dá)的各個(gè)途徑的泄漏建立了數(shù)學(xué)模型。 典型樣機(jī)的試驗(yàn)表明，，在進(jìn)出口壓差以及馬達(dá)輸入流量不變的情況下，該齒輪馬達(dá)在4種連接方式時(shí)的輸出轉(zhuǎn)矩成一定比例關(guān)系，與理論分析一致。由于該齒輪馬達(dá)多處采用了間隙密封的方案，加上樣機(jī)加工的精度不夠，導(dǎo)致該馬達(dá)容積效率隨著壓差的增加不斷降低，但其機(jī)械效率相對(duì)較高。樣機(jī)實(shí)驗(yàn)基本驗(yàn)證了雙定子擺動(dòng)液壓馬達(dá)工作原理的正確性，印證了雙定子思想同樣可以在齒輪泵或齒輪馬達(dá)體系的應(yīng)用，為以后齒輪馬達(dá)的改進(jìn)設(shè)計(jì)提供了重要依據(jù)。
[Abstract]:At present, hydraulic technology, as one of the key basic technologies to realize modern transmission and control, has become an indispensable and important foundation for agricultural and forestry machinery, engineering construction machinery and national defense advanced products. The improvement and innovation of hydraulic components is an important direction to promote the development of hydraulic technology. Based on the idea of "double stator", this subject tries to break the structure of the original gear motor and realize the situation without changing the input flow rate. A new type of internal and external meshing gear motor is developed by adjusting the speed of gear motor. The difference between the new type gear motor and the traditional gear motor is that the motor has two motors in one shell, the internal gear motor and the outer gear motor. The two motors can work separately or jointly. The motor can realize the output of multi-stage rotational speed and multi-stage torque only by switching its own different connection mode, thus eliminating the energy consumption elements such as throttle valve and pressure reducing valve, reducing the waste of energy and improving the efficiency. In this paper, the working principle and structure of the internal and external meshing gear motor are first determined, and the theoretical calculation methods and formulas of the displacement, rotational speed and output torque of the single internal gear motor and the single outer meshing gear motor are derived. The structure of the gear motor is optimized and the parameters and dimensions of the main parts of the motor are selected according to the design requirements. Then, the radial force of gear is discussed and studied, and the calculation formulas of radial force of external meshing gear motor and radial force of internal meshing gear motor are derived, according to the dimension parameters of the main parts of the prototype, the radial force of the external meshing gear motor and the radial force of the internal meshing gear motor are calculated. The radial force of the gear was calculated and the mechanical strength of the main parts of the motor was checked. The mechanical properties of the crescent plate were simulated by simulation software of Solidworks. Finally, the leakage path and size of the gear motor are explained and introduced in detail, and the mathematical model of the leakage of the gear motor is established. The test results of typical prototype show that the output torque of the gear motor is proportional to the theoretical analysis under the condition of constant inlet and outlet pressure difference and constant input flow rate of the motor. Because the gear motor adopts clearance seal scheme in many places and the machining accuracy of the prototype is not enough, the volumetric efficiency of the motor decreases continuously with the increase of pressure difference, but its mechanical efficiency is relatively high. The experiment of the prototype basically verifies the correctness of the working principle of the double stator swing hydraulic motor, and proves that the double stator idea can also be applied in the gear pump or gear motor system, which provides an important basis for improving the design of the gear motor in the future.
【學(xué)位授予單位】：燕山大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TH137.51

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