A connection structure between the exciter and the fixture of a diesel lubricity testing device

Abstract

The invention discloses a connecting structure between a vibration exciter of a diesel oil lubricity determining device and a clamp. The connecting structure comprises a vibration rod, wherein the vibration rod is used for connecting the vibration exciter with a steel ball clamp, the left end of the vibration rod is connected with the vibration exciter, and the right end of the vibration rod is connected with the steel ball clamp, so that the vibration rod is of an integral structure. The connecting structure has the beneficial effects that the steel ball clamp is in hard connection with the vibration exciter, namely that the vibration rod is of the integral structure without any breakpoint, so that the noise in the high-frequency reciprocating motion process of a diesel oil lubricity tester is effectively reduced, and the experiment data is accurate and effective; and meanwhile, by virtue of dual contact including radial contact and end surface contact between the vibration rod and the steel ball clamp as well as end surface fixation, the connection dimension is increased from original one-dimensional plane connection to two-dimensional plane-round surface dual positioning connection, so that the effect of the improved structure is obviously superior to that of the original structure, the high-frequency nose is further eliminated, the experiment data is more regular and controllable than that in the past, and the deviation and instability caused by the noise are eliminated.

Description

technical field [0001] The invention relates to the field of detection devices, in particular to a connection structure between an exciter and a fixture of a diesel lubricity measurement device. Background technique [0002] With the increasing environmental protection requirements, oil product upgrading has become an inevitable trend, and the control of oil product indicators has become more stringent, and the demand for testing instruments has gradually increased. Due to the strict control of sulfur content in oil products, lubricity has become an important testing item. The diesel lubricity tester is a daily analytical instrument for measuring the lubricity of diesel oil. Since its performance determines the accuracy of the data, it puts forward higher requirements for the accuracy and stability of the instrument. Therefore, the design of the test machine structure Particularly important. [0003] Diesel Lubricity Tester is a special instrument used to measure the lubri...

AI Technical Summary

Problems solved by technology

The connection between the steel ball fixture and the vibrator is a soft connection. For example, the vibrating rod is a flexible shaft, or the vibrating rod is a variable-diameter structure connected by multiple sections, so as to have the effect of vibration attenuation and shock mitigation, but in practice During use, it was found that the connection between the steel ball fixture and the vibrator is a soft connection. When the vibrating rod drives the steel ball fixture to vibrate at high speed, even a very small gap or skew will make the two sides of the connection unstable, and then Under the action of resonance, the vibration is further amplified, making the vibration noise unbearable

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