本文選題：盤(pán)形濕式制動(dòng)器 + 溫度場(chǎng)��； 參考：《西安科技大學(xué)》2015年碩士論文

【摘要】：盤(pán)形濕式制動(dòng)器與盤(pán)形干式制動(dòng)器相比,具有散熱好,制動(dòng)性能穩(wěn)定,使用壽命長(zhǎng)等優(yōu)點(diǎn)。本文根據(jù)采煤機(jī)實(shí)際制動(dòng)工況,分析了制動(dòng)器三維模型的溫度場(chǎng)分布,針對(duì)制動(dòng)器的溫度與摩擦片的磨損量需要人工判斷的問(wèn)題,研制了智能盤(pán)形濕式制動(dòng)器,該制動(dòng)器具有在線(xiàn)監(jiān)測(cè)制動(dòng)器的溫度和摩擦片的磨損量的功能。本文主要研究工作如下:根據(jù)制動(dòng)器實(shí)際工況和工作原理確定了制動(dòng)參數(shù)、有限元位移約束條件,參照制動(dòng)器的實(shí)物建立了三維有限元模型,并應(yīng)用有限元分析軟件Abaqus對(duì)采煤機(jī)緊急制動(dòng)過(guò)程進(jìn)行了仿真,得出了制動(dòng)器摩擦副三維溫度場(chǎng)分布規(guī)律并找到了最大溫升區(qū)域。應(yīng)用excel軟件處理制動(dòng)器與軸向位移的關(guān)系曲線(xiàn),得出更加切合實(shí)際的制動(dòng)器溫度與軸向位移之間的的經(jīng)驗(yàn)公式,這為溫度傳感器的布置與制動(dòng)器溫度的在線(xiàn)監(jiān)測(cè)提供了重要理論依據(jù)。為了能準(zhǔn)確判斷制動(dòng)器摩擦片的磨損情況以及制動(dòng)器的溫度,設(shè)計(jì)了在線(xiàn)監(jiān)測(cè)系統(tǒng)。該系統(tǒng)以C8051F330為核心,設(shè)計(jì)了位移和溫度采集模塊、存儲(chǔ)電路、報(bào)警電路、上位機(jī)電路,以及相關(guān)的軟件程序。用VB編寫(xiě)了上位機(jī)界面,并通過(guò)RS232標(biāo)準(zhǔn)與單片機(jī)互相通信,實(shí)現(xiàn)實(shí)時(shí)顯示制動(dòng)器的溫度與摩擦片的磨損量。采用防爆電氣理論和技術(shù),合理確定了硬件電路和傳感器的安裝位置,并對(duì)智能盤(pán)形濕式制動(dòng)器電器部分進(jìn)行了隔爆設(shè)計(jì)。按照論文研究方案制作了采煤機(jī)用智能盤(pán)形濕式制動(dòng)器的功能樣機(jī),完成了監(jiān)測(cè)系統(tǒng)硬件電路及軟件程序的設(shè)計(jì),經(jīng)過(guò)現(xiàn)場(chǎng)調(diào)試,該系統(tǒng)實(shí)現(xiàn)了對(duì)制動(dòng)器摩擦片的磨損量以及制動(dòng)過(guò)程中溫度的監(jiān)測(cè),對(duì)采煤機(jī)用盤(pán)形濕式制動(dòng)器的使用安全、產(chǎn)品質(zhì)量提供了保障。
[Abstract]:Compared with the disk dry brake, the disc wet brake has the advantages of good heat dissipation, stable braking performance and long service life. According to the actual braking condition of the shearer, the temperature field distribution of the three dimensional model of the brake is analyzed in this paper. According to the problem that the temperature of the brake and the wear quantity of the friction plate need to be judged manually, the intelligent disc type wet brake is developed. The brake has the function of on-line monitoring the temperature of the brake and the wear of the friction disc. The main research work of this paper is as follows: according to the actual working condition and working principle of brake, the braking parameters and finite element displacement constraint conditions are determined, and the three-dimensional finite element model is established according to the physical object of brake. The finite element analysis software Abaqus is used to simulate the emergency braking process of the shearer. The three-dimensional temperature field distribution of the brake friction pair is obtained and the maximum temperature rise region is found. Using excel software to deal with the relation curve between brake and axial displacement, a more practical empirical formula between brake temperature and axial displacement is obtained. This provides an important theoretical basis for the arrangement of temperature sensors and the on-line monitoring of brake temperature. In order to accurately judge the wear of brake friction plate and the temperature of brake, an on-line monitoring system is designed. The system takes C8051F330 as the core, and designs displacement and temperature acquisition module, storage circuit, alarm circuit, upper electromechanical circuit, and related software program. The upper computer interface is programmed with VB, and the RS232 standard is used to communicate with the single chip microcomputer to realize the real-time display of the brake temperature and the wear quantity of the friction plate. By using the theory and technology of explosion-proof electric system, the installation position of hardware circuit and sensor is reasonably determined, and the flameproof design of intelligent disc type wet brake is carried out. According to the research scheme of the thesis, the functional prototype of intelligent disk type wet brake for shearer is made, and the hardware circuit and software program of the monitoring system are designed and debugged. The system realizes the monitoring of the friction disc wear and the temperature during the braking process, and provides a guarantee for the safe use and product quality of the disc wet brake used in the shearer.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TD632.1

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