Friction coefficient measuring device for reciprocating rotary connecting structure
A technology of rotating connection and friction coefficient, which is applied in the field of simulation testing machines, can solve the problems of inability to accurately measure the friction coefficient of marine nuclear power platforms, etc., and achieve the effects of enhanced scalability and easy assembly and disassembly operations
Pending Publication Date: 2021-01-08
DALIAN UNIV OF TECH
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Problems solved by technology
[0004] In view of the problem that the existing friction testing machine cannot accurately measure the friction coefficient of the test piece of the reciprocating rotary connection structure of the marine nuclear power platform, the purpose of the present invention is to provide a friction coefficient measurement device for the reciprocating rotary connection structure, especially a device that can be used for testing Experimental device for different loads, different rotation frequencies, and different swing angles of reciprocating rotating structures
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[0015] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0016] figure 1 , figure 2 and image 3 The structure of a friction coefficient measuring device for a reciprocating rotary connection structure is shown. In the figure, the friction coefficient measuring device includes a workbench 1 main body, wherein the stand 4 and the motor 2 are respectively fixed on the workbench 1 as the main part of the positioning and assembly of the device; the lead screw 7 passes through the spoke type load cell 6 and The through hole of the stand 4 is fixedly connected with the connecting fork 3b. The spring guide rod 9 is fixed on the stand 4, and the spring 9a is assembled between the first connecting plate 8 and the second connecting plate 8a, and is sheathed in series on the spring guide rod 9; A guide rod sliding sleeve 8b cooperates, and the spring guide rod 9 cooperates with the second guide rod sliding sleeve...
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The invention discloses a friction coefficient measuring device for a reciprocating rotary connection structure, and belongs to the technical field of simulation testing machines. The device comprisesa loading assembly, a fixed clamping assembly and a power driving assembly. The loading assembly compresses a spring on a spring guide rod through a nut, a second connecting plate and a lead screw, and extrudes a stress application sleeve on a first connecting plate to a spoke type weighing sensor, so that loading of a connecting rod and a pin shaft is realized; a connecting fork, a first supportand a second support in the fixed clamping assembly fix the connecting rod and the pin shaft; the power driving assembly drives an eccentric wheel through a motor to drive the connecting rod to do planar motion to realize reciprocating rotary motion of the connecting rod and a shaft sleeve; the spoke type weighing sensor and an S-shaped tension sensor realize measurement of positive pressure andfriction force of the reciprocating rotary connecting structure, and furthermore a friction coefficient is calculated. The measuring device can adjust parameters such as load and rotation frequency, simulate the service state of the reciprocating rotary structure of a marine nuclear power platform under multiple working conditions, and accurately reflect the change rule of the friction coefficientof the reciprocating rotary structure.
Description
technical field [0001] The invention relates to a friction coefficient measuring device of a reciprocating rotary connection structure, which belongs to the technical field of simulation testing machines. Background technique [0002] The reciprocating rotary connection structure is the "joint" of the positioning system of the marine nuclear power platform, which can release the rotational degree of freedom of the positioning system, so that the marine nuclear power platform has a good weathervane effect and realizes its water positioning in a fixed area. However, due to the complex and harsh marine environment, the reciprocating rotary connection structure oscillates at high frequency and low amplitude, and the resulting alternating stress cycles for a long time, resulting in fatigue damage to the contact surface of the connection structure. The failure of the connection structure often means the loss of the mechanical system function of the entire positioning system, which...
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IPC IPC(8): G01N19/02
CPCG01N19/02
Inventor 郭冲冲武文华吕柏呈李文远童韵孟尧徐康琪王明轩
Owner DALIAN UNIV OF TECH