【摘要】：當前，液壓技術作為實現(xiàn)現(xiàn)代傳動與控制的關鍵基礎技術之一，已經(jīng)成為農(nóng)林機械、工程建設機械及國防尖端產(chǎn)品等不可缺少的重要基礎。對液壓元件的改進與創(chuàng)新是推動液壓技術發(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的結(jié)構(gòu)，實現(xiàn)在不改變輸入流量的情況下，對齒輪馬達的轉(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。該新型結(jié)構(gòu)的齒輪馬達，與傳統(tǒng)的齒輪馬達的區(qū)別是：該馬達在一個殼體中，有內(nèi)嚙合齒輪馬達和外嚙合齒輪馬達兩個馬達，兩馬達可以單獨工作，也可聯(lián)合工作。該馬達僅通過切換自己不同的連接方式就可以實現(xiàn)多級轉(zhuǎn)速和多級轉(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，提高了效率。 文中首先確定了內(nèi)外嚙合齒輪馬達的工作原理以及結(jié)構(gòu)，推導出了單個內(nèi)嚙合齒輪馬達與單個外嚙合齒輪馬達的排量、轉(zhuǎn)速以及輸出扭矩的理論計算方法與公式，對該齒輪馬達的結(jié)構(gòu)進行了優(yōu)化設計，并結(jié)合設計要求，選定出該馬達的主要零件的參數(shù)與尺寸。然后對齒輪的徑向力展開討論研究，分別對外嚙合齒輪馬達徑向力與內(nèi)嚙合齒輪馬達徑向力的計算公式進行推導演算，根據(jù)樣機的主要零部件的尺寸參數(shù)，計算出樣機的齒輪徑向力，對該馬達的主要零件的力學強度進行了校核，并運用Solidworks的simulation仿真軟件對月牙板的力學性能進行了模擬仿真。最后對齒輪馬達的泄漏途徑、大小進行了詳細的說明和介紹，并對齒輪馬達的各個途徑的泄漏建立了數(shù)學模型。 典型樣機的試驗表明，，在進出口壓差以及馬達輸入流量不變的情況下，該齒輪馬達在4種連接方式時的輸出轉(zhuǎn)矩成一定比例關系，與理論分析一致。由于該齒輪馬達多處采用了間隙密封的方案，加上樣機加工的精度不夠，導致該馬達容積效率隨著壓差的增加不斷降低，但其機械效率相對較高。樣機實驗基本驗證了雙定子擺動液壓馬達工作原理的正確性，印證了雙定子思想同樣可以在齒輪泵或齒輪馬達體系的應用，為以后齒輪馬達的改進設計提供了重要依據(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.
【學位授予單位】：燕山大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TH137.51

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