本文選題：踏面制動單元 + 試驗臺��； 參考：《南京理工大學》2014年碩士論文

【摘要】：踏面制動單元是空氣制動系統(tǒng)中的執(zhí)行機構(gòu),直接影響車輛的行車安全。因此需要對其進行強度試驗、泄漏試驗、調(diào)整量試驗、制動力試驗等多項性能測試。 對踏面制動單元的性能測試試驗種類繁多,過程復雜,而目前大部分踏面制動單元生產(chǎn)商和使用商都采用進口的試驗設(shè)備,但這些智能化程度不高,加大了試驗人員的工作強度,使試驗數(shù)據(jù)的不確定度提升,并且成本高昂,因此為了提高試驗效率,重要的是提升試驗數(shù)據(jù)的可靠性以及準確性,需要設(shè)計一套具有自主知識產(chǎn)權(quán)的踏面制動單元測試系統(tǒng)以提高檢測過程的自動化程度。 本項目依據(jù)踏面制動單元的工作原理以及踏面制動單元的測試項目要求,研發(fā)設(shè)計了此踏面制動單元測試系統(tǒng)試驗臺。此試驗臺包括測試主機和操作控制臺兩部分,測試主機分為床身和電氣柜,是踏面制動單元進行性能測試的主體部分。試驗人員通過操作控制臺控制測試主機對踏面制動單元進行性能測試。 為了滿足踏面制動單元測試系統(tǒng)的功能要求、生產(chǎn)要求、安全要求、可靠性要求以及多用途要求的基礎(chǔ)上,在設(shè)計試驗臺時設(shè)置了三個運動的自由度,兩個縱向運動和安裝板的橫向運動。兩個縱向運動相互配合以實現(xiàn)制動器行程測試和行程補償量測試,安裝板的橫向運動可以滿足不同尺寸的制動單元安裝后進行對中調(diào)節(jié)；試驗臺設(shè)置了兩路獨立的供氣氣路,可對制動單元的行駛制動缸和駐車制動缸一次性進行測試,提高了測試生產(chǎn)效率；試驗臺的試驗壓力調(diào)節(jié)范圍廣,可以滿足各種低壓和高壓制動器的測試試驗,氣壓調(diào)節(jié)采用高精度比例閥,高精度壓力傳感器和控制電路組成的閉環(huán)氣壓調(diào)節(jié)回路,壓力調(diào)節(jié)精度高；控制部分和數(shù)據(jù)采集系統(tǒng)采用LabVIEW虛擬儀器平臺,通過計算機進行測試過程的操作,數(shù)據(jù)采集、分析處理以及測試報告的打印,提高了系統(tǒng)的測試效率,配以高精度傳感器提高了系統(tǒng)的測試精度；并且試驗臺設(shè)置了多重保護措施,確保操作人員的人身安全和測試系統(tǒng)的安全可靠運行,減少系統(tǒng)的故障。 此踏面制動單元測試系統(tǒng)可實現(xiàn)對不同型號和規(guī)格踏面制動單元包括強度試驗、氣密性試驗、行程試驗、調(diào)整量試驗、手動緩解試驗、制動力試驗在內(nèi)的多項性能測試,這些測試只需試驗人員通過操作控制面板來實現(xiàn),極大地提高了測試效率,在高精度傳感器的保證下使得測試數(shù)據(jù)的精度得到了保證。
[Abstract]:The tread brake unit is an actuator in the air brake system, which directly affects the vehicle safety. Therefore, it is necessary to carry out a number of performance tests, such as strength test, leakage test, adjustment test, dynamic test and so on.
There are a wide variety of test tests on the performance of tread brake units, and the process is complex. At present, most of the manufacturers and operators of tread brake units use imported test equipment, but these intelligentized degree is not high, which increases the working strength of the experimenters, improves the uncertainty of the test data and has high cost. The test efficiency is important to improve the reliability and accuracy of the test data. It is necessary to design a set of tread brake unit testing system with independent intellectual property right to improve the automation of the testing process.
Based on the working principle of the tread brake unit and the test project requirements of the tread brake unit, this project has developed and designed the test system test system for the tread brake unit. The test platform includes two parts of the test host and the operating console. The test host is divided into the bed and the electric cabinet, which is the main part of the performance testing of the tread brake unit. The tester controls the test host's performance test on the tread brake unit through the operation console.
In order to meet the functional requirements of the tread brake unit test system, production requirements, safety requirements, reliability requirements and multipurpose requirements, three motion degrees of freedom, two longitudinal motion and lateral motion of the mounting plate are set up in the design test rig. Two longitudinal motions are matched to realize the brake stroke test and the testing of the brake. The lateral movement of the mounting plate can satisfy the adjustment of the brake unit with different sizes. The test bench sets two independent gas supply routes, which can test the driving brake cylinder and the parking brake cylinder in one time, and improve the test production efficiency; the test pressure adjustment of the test bed is adjusted. The range is wide, it can meet the test test of various low pressure and high pressure brakes, the pressure regulation adopts the high precision proportional valve, the high precision pressure sensor and the control circuit composed of the closed loop pressure regulating loop, the pressure adjustment precision is high, the control part and the data acquisition system use the LabVIEW virtual instrument platform, through the computer to carry on the test. The operation of the process, data collection, analysis and processing and the printing of test reports improve the efficiency of the system test, and improve the test precision of the system with a high precision sensor; and the test platform sets multiple protection measures to ensure the safety of the operator and the safe and reliable operation of the test system, and reduce the failure of the system.
The tread brake unit test system can implement a number of performance tests for different type and specification tread brake units, including strength test, air tightness test, stroke test, adjustment test, manual relief test, and dynamic test. These tests only need the test personnel to pass through the operation control panel to greatly improve the test. The accuracy of the test data is guaranteed by the high precision sensor.

【學位授予單位】：南京理工大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U270.35;U270.7

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本文編號：1891925