【摘要】：在軟管、電纜等產(chǎn)品的生產(chǎn)中,為使其具有較好的抗拉伸、抗彎折、抗沖擊和耐磨損等性能,常在其壁內(nèi)增加一層或數(shù)層的網(wǎng)狀強(qiáng)化層,該網(wǎng)狀強(qiáng)化層為網(wǎng)線相互交叉而成。為實(shí)現(xiàn)網(wǎng)線的相互交叉,常使用編織機(jī)進(jìn)行編織。編織機(jī)的機(jī)械傳動(dòng)系統(tǒng)是設(shè)備的關(guān)鍵部分,改善其傳動(dòng)性能是提高編織機(jī)運(yùn)動(dòng)轉(zhuǎn)速的重要途徑之一。目前國(guó)內(nèi)外編織機(jī)的機(jī)械傳動(dòng)系統(tǒng)大都是一套閉環(huán)齒輪傳動(dòng)系統(tǒng),閉環(huán)齒輪傳動(dòng)系統(tǒng)共有n個(gè)齒輪,n≥4,且為偶數(shù),n個(gè)齒輪兩兩相互嚙合,并形成一個(gè)封閉的傳動(dòng)鏈。閉環(huán)齒輪傳動(dòng)系統(tǒng)的傳動(dòng)平穩(wěn)性直接影響著編織機(jī)的傳動(dòng)效率和工作可靠性,因此閉環(huán)齒輪傳動(dòng)平穩(wěn)性的研究具有重要的理論意義和實(shí)用價(jià)值。選取編織機(jī)的閉環(huán)齒輪傳動(dòng)系統(tǒng)為研究對(duì)象,研究的主要內(nèi)容和結(jié)果為:(1)閉環(huán)齒輪傳動(dòng)系統(tǒng)是編織機(jī)主要的機(jī)械傳動(dòng)系統(tǒng),傳動(dòng)誤差對(duì)其傳動(dòng)平穩(wěn)性有重要影響。利用當(dāng)量嚙合誤差原理,建立閉環(huán)齒輪傳動(dòng)系統(tǒng)各齒輪共同作用時(shí)傳動(dòng)誤差與時(shí)間的函數(shù)關(guān)系式,得出了閉環(huán)齒輪傳動(dòng)系統(tǒng)傳動(dòng)誤差隨時(shí)間的變化規(guī)律。利用蒙特卡羅法,驗(yàn)證了傳動(dòng)誤差隨時(shí)間的變化規(guī)律的正確性。依據(jù)閉環(huán)齒輪傳動(dòng)系統(tǒng)的角頻率相同特性,研究各齒輪誤差初始相位與齒輪傳動(dòng)誤差的關(guān)系及兩支路傳動(dòng)誤差的同步性;構(gòu)建同步傳動(dòng)誤差和各齒輪傳動(dòng)誤差之間的耦合模型,提出減小同步傳動(dòng)誤差的措施。實(shí)例分析表明:該措施可以有效地提高閉環(huán)齒輪傳動(dòng)系統(tǒng)的傳動(dòng)平穩(wěn)性。(2)閉環(huán)齒輪傳動(dòng)系統(tǒng)具有功率分流的傳動(dòng)特點(diǎn),系統(tǒng)均載性能對(duì)其傳動(dòng)平穩(wěn)性有著至關(guān)重要的作用。根據(jù)齒輪首位相接的結(jié)構(gòu)特點(diǎn),建立閉環(huán)齒輪傳動(dòng)系統(tǒng)彈性支撐條件下的靜力學(xué)模型。依據(jù)系統(tǒng)功率流閉環(huán)的特點(diǎn),給出系統(tǒng)的變形協(xié)調(diào)條件;結(jié)合力矩平衡方程和彈性支撐條件,推導(dǎo)出各支路傳遞的扭矩及系統(tǒng)均載系數(shù)的計(jì)算方法,得到系統(tǒng)偏心誤差與均載系數(shù)之間的函數(shù)關(guān)系。利用控制變量法,分析了各位置的偏心誤差對(duì)系統(tǒng)功率分流的影響規(guī)律,為科學(xué)的設(shè)計(jì)高速編織機(jī)的閉環(huán)齒輪傳動(dòng)系統(tǒng)提供理論基礎(chǔ)。(3)根據(jù)其齒輪分布的結(jié)構(gòu)特點(diǎn),建立了嚙合齒輪的傳動(dòng)方向角、嚙合線方向角和嚙合線夾角的計(jì)算通式。通過(guò)分析整個(gè)傳動(dòng)系統(tǒng)齒輪嚙合線夾角的分布特點(diǎn),研究了閉環(huán)齒輪傳動(dòng)系統(tǒng)齒輪軸的受載規(guī)律。實(shí)例分析表明:即使在無(wú)制造和安裝誤差的理想情況下,閉環(huán)齒輪傳動(dòng)系統(tǒng)仍然會(huì)出現(xiàn)載荷分配不均勻的現(xiàn)象,并且齒輪軸受載具有大小交替分布的規(guī)律。揭示了系統(tǒng)部分軸承易損壞的原因,該研究可為閉環(huán)齒輪傳動(dòng)系統(tǒng)的軸承選擇和校核提供依據(jù)。本文選取編織機(jī)的閉環(huán)齒輪傳動(dòng)系統(tǒng)為研究對(duì)象,研究了系統(tǒng)的傳動(dòng)誤差、均載性能和受力特性對(duì)閉環(huán)齒輪傳動(dòng)平穩(wěn)性的影響。最終通過(guò)齒輪誤差耦合的方法減小系統(tǒng)的同步傳動(dòng)誤差;通過(guò)控制系統(tǒng)構(gòu)件的偏心誤差提高系統(tǒng)均載性能;根據(jù)系統(tǒng)受力特性規(guī)律,更加合理的的選用和校核不同位置的軸承從而提高系統(tǒng)的運(yùn)轉(zhuǎn)可靠性。本研究能為今后閉環(huán)齒輪傳動(dòng)系統(tǒng)的設(shè)計(jì)提供理論基礎(chǔ)。
[Abstract]:In the production of hose, cable and other products, in order to make it have better tensile, bending, impact resistance and wear resistance, it often adds one or more layers of mesh reinforcement in its wall. The mesh reinforcement is intersected with the intersecting lines. In order to realize the intersecting of the wire, the knitting machine is often used to weave. The dynamic system is the key part of the equipment. Improving the transmission performance is one of the important ways to improve the speed of the knitting machine. At present, the mechanical transmission system of the knitting machine is mostly a closed loop gear transmission system. The closed loop gear transmission system has n gear, n more than 4, and even, n gear 22 meshes with each other, and forms a seal. Closed transmission chain. The transmission stability of closed loop gear transmission system directly affects the transmission efficiency and working reliability of the knitting machine. Therefore, the study of the stability of the closed loop gear transmission has important theoretical significance and practical value. The main contents and results of the study are as follows: (1) close study on the closed loop gear transmission system of the braiding machine. The ring gear transmission system is the main mechanical transmission system of the knitting machine, and the transmission error has an important influence on the stability of its transmission. By using the principle of equivalent meshing error, a function relation between the transmission error and the time is established when the gears of the closed loop gear transmission are combined with each other, and the change of the transmission error with the time of the closed gear transmission system is obtained. In accordance with the same characteristics of the angular frequency of the closed loop gear transmission system, the relationship between the initial phase of the gear error and the gear transmission error and the synchronism of the transmission error of the two branches are studied, and the synchronization between the synchronous transmission error and the gear transmission error is constructed. The coupling model puts forward measures to reduce the synchronous transmission error. The example analysis shows that this measure can effectively improve the transmission stability of the closed loop gear transmission system. (2) the closed-loop gear transmission system has the transmission characteristics of power diversion, and the performance of the system has a vital role in the transmission stability. The static model of the closed loop gear transmission system is established under the elastic support condition of the closed-loop gear transmission system. According to the characteristics of the system power flow closed loop, the deformation coordination condition of the system is given, and the calculation method of the torque and the system load coefficient of the system is derived by combining the moment balance equation and the elastic support condition, and the eccentricity error of the system is obtained. By using the control variable method, the effect of the eccentric error on the power diverting of the system is analyzed by using the control variable method, which provides the theoretical basis for the scientific design of the closed loop gear transmission system of high speed braiding machine. (3) according to the structure characteristics of the gear distribution, the transmission direction angle and meshing line of the meshing gear are established. A general formula of the angle between the direction angle and the meshing line is studied. By analyzing the distribution characteristics of the angle of the gear meshing line of the whole transmission system, the loading law of the gear shaft of the closed loop gear transmission system is studied. The case analysis shows that the closed loop gear transmission system will still have the uneven load distribution even in the ideal case of no manufacturing and installation error. The reason for the easy damage of the part bearing of the system is revealed. This study can provide the basis for the bearing selection and check of the closed loop gear drive system. This paper selects the closed loop gear transmission system of the knitting machine as the research object, and studies the transmission error, the load average performance and the performance of the system. The influence of the force characteristic on the stability of the closed loop gear transmission. Finally, the synchronization transmission error of the system is reduced by the method of gear error coupling, and the average load performance of the system is improved by controlling the eccentric error of the system component, and the system is improved by selecting and checking the bearings in different positions more reasonably according to the law of the force characteristic of the system. This study can provide a theoretical basis for the design of closed loop gear transmission system in the future.
【學(xué)位授予單位】：河南科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TH132.41

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本文編號(hào)：2139912