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1、附 录The Spin Tester for the Automobile Clutch Test with High Speed Photography SystemAbstract:The development of a new type spin tester for the automobile clutch test is introduced.A vertical flexible shaft system with rubber damper is applied to the tester.The crushing test of the clutch assembly ca
2、n be done frequently on the spin tester,and the high speed photography system adopting ordinary camera can record the crushing wink.The crushing test of a clutch on this tester is also introduced.and the weak link of the clutch assembly can be found from the photograph of crushing wink. Key words:sp
3、in testerautomobile clutchhigh speed photographyClutch by gland assembly and platen assembly which, in their rotation strength is the key parts of the quality evaluation car is an important index, rules and regulations should be acceleration in their state of the rotating speed is higher than speedi
4、ng strength test to determine the safety and reliability of the clutch disc. For example, santana clutch disc assembly and driven plate total chengdu in ordinary temperature requirements in a = rad/s2 acceleration of 50 acc to 12 000 r/min, and platen assembly also requires in high temperature (250
5、) at a = rad/s2 acceleration of 50 acc to 10 000 r/min without fracture. These tests require in the specialized testing machine. At present, the domestic is no clutch assembly strength test on the special equipment. This paper introduces the author developed a vertical multi-function of clutch rotat
6、ing strength tester (see chart 1). It has a strong drive ability (1), can generate enough acceleration, the maximum weight 50 kg, with the highest speed 18 000 r/min, maximum acceleration 20 rad PI/s2 the clutch assembly strength test; (2) the strong vibration absorber system, to absorb the clutch a
7、ssembly high speed rotating vibration energy; (3) the reliable and steady automation control system and absolute safety of lead brick protection recessed; (4) to observe the clutch assembly rotation experiment process and the rupture instantaneous state surveillance and high-speed photography system
8、. To all sorts of clutch assembly, the machine can strength test, especially for high speed can be frequently do destructive testing, use convenient, safe and reliable.Figure 1 clutch rotating strength tester photos1.The main structure characteristics1.1 With rubber damping bearing on the flexible s
9、haft typeThis kind of test enginery due to frequent, high-speed destructive testing, the host axis should be able to complete the clutch assembly rose quickly to the whole process of destruction, so we used on the vertical with rubber damper flexible shaft of 1, the structure see FIG. 2). Due to the
10、 vertical axis, one soft critical speed is low, order only 1800 to 2000 r/min or so, make whole high-speed area are on supercritical of smooth state. At the same time in soft shaft with a middle with O type of rubber ring damping bearing shaft system, when the critical speed or because the clutch as
11、sembly brought serious imbalance fierce, the vibration damping bearing can absorb vibration energy, attenuation shaft vibration 2, ensure the clutch assembly continue to rise until the complete destruction, ensure speed high-speed damage test. This structure is simple, easy to adjust, damping range.
12、 In order to prevent the clutch assembly damage time, great instantaneous vibration energy cause shaft and the lower the destruction of the transmission system, in the gentle shaft with a limit bearing, head to prevent soft shaft bending big and the bottom of the drive shaft damage components. Soft
13、axis adopt plug-in installation, when the clutch assembly, the most serious destruction is replaced the soft shaft, head bent to the whole machine didnt have any effect, operation loading and unloading is very convenient, and ensure the tester can frequently in the clutch assembly destructive test.
14、The vertical axis, facilitate on the cover from the Windows of the testing process and observe specimens of installation and removal.Figure 2 rubber damper with flexible shaft1.2 The clutch assembly damage moments of high-speed photography systemThe clutch assembly by many parts assembly and become,
15、 the parts quality is directly related to the quality of the assembly. If can through the high-speed strength test find assembly parts the weak links, had better be to be in test chamber to take the parts assembly by deformation and destruction and yield spread to the whole process of, that will be
16、very significant. Although currently not at a close range in advance, do not know when the clutch assembly of the damage happened produced high speed the whole process of destruction, but they can take to destroy the moment alone photos. Foreign is widely accepted in the specimen outside trigger coil rotor set, as the rotor fly crack, debris flying out of line, met trigger trigger circuit triggered by high speed camera shutter open, took a damag
