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  本文選題：盤形濕式制動器 + 溫度場�。� 參考：《西安科技大學》2015年碩士論文

【摘要】：盤形濕式制動器與盤形干式制動器相比,具有散熱好,制動性能穩(wěn)定,使用壽命長等優(yōu)點。本文根據(jù)采煤機實際制動工況,分析了制動器三維模型的溫度場分布,針對制動器的溫度與摩擦片的磨損量需要人工判斷的問題,研制了智能盤形濕式制動器,該制動器具有在線監(jiān)測制動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)制動器實際工況和工作原理確定了制動參數(shù)、有限元位移約束條件,參照制動器的實物建立了三維有限元模型,并應用有限元分析軟件Abaqus對采煤機緊急制動過程進行了仿真,得出了制動器摩擦副三維溫度場分布規(guī)律并找到了最大溫升區(qū)域。應用excel軟件處理制動器與軸向位移的關(guān)系曲線,得出更加切合實際的制動器溫度與軸向位移之間的的經(jīng)驗公式,這為溫度傳感器的布置與制動器溫度的在線監(jiān)測提供了重要理論依據(jù)。為了能準確判斷制動器摩擦片的磨損情況以及制動器的溫度,設計了在線監(jiān)測系統(tǒng)。該系統(tǒng)以C8051F330為核心,設計了位移和溫度采集模塊、存儲電路、報警電路、上位機電路,以及相關(guān)的軟件程序。用VB編寫了上位機界面,并通過RS232標準與單片機互相通信,實現(xiàn)實時顯示制動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,并對智能盤形濕式制動器電器部分進行了隔爆設計。按照論文研究方案制作了采煤機用智能盤形濕式制動器的功能樣機,完成了監(jiān)測系統(tǒng)硬件電路及軟件程序的設計,經(jīng)過現(xiàn)場調(diào)試,該系統(tǒng)實現(xiàn)了對制動器摩擦片的磨損量以及制動過程中溫度的監(jiān)測,對采煤機用盤形濕式制動器的使用安全、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.
【學位授予單位】：西安科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TD632.1

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本文編號：2032352