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Full-floating piston pin friction test device

A test device and piston pin technology, which is applied in the field of power machinery, can solve problems such as the inability to apply piston pin friction and wear tests, and achieve the effects of improving test accuracy, consistency, and accuracy

Active Publication Date: 2021-07-27
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patented technology is mainly proposed for the friction and wear test of the piston ring, and cannot be applied to the friction and wear test of the piston pin

Method used

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  • Full-floating piston pin friction test device
  • Full-floating piston pin friction test device
  • Full-floating piston pin friction test device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The invention provides a full-floating piston pin friction test device, such as Figure 1-9 As shown, it includes a frame 1 and a motion simulation system 2 installed on the frame 1 . The frame 1 is a frame structure, preferably a rectangular double-layer frame structure, which can provide installation positions for multiple supporting equipment, and saves the floor space of the frame. The upper, middle and lower positions of the frame 1 are supporting steel plates. The metal brackets are used for support, and the brackets are connected with the plates through high-strength bolts. The motion simulation system 2 includes a bearing base 21 , a connecting rod 22 , a cam 23 , a return spring 24 and a transmission mechanism 25 . The bearing seat 21 is provided with a shaft hole 211, and the shaft hole 211 is used for installing the piston pin 6 to be tested. The bearing seat 21 can be rectangular, triangular, Ω-shaped, etc. Two load-bearing bases 21 are fixedly installed ...

Embodiment 2

[0041] This embodiment 2 is formed on the basis of embodiment 1. Through the matching settings of lubrication, heating, loading and other systems, the consistency between the test process of the full-floating piston pin friction experiment and the actual working conditions is further improved, and the accuracy of the test is improved. . specifically:

[0042] Such as Figure 1-9 As shown, a lubrication system 3 is provided in the full-floating piston pin friction test device, and the lubrication system includes an oil injection pipe 31 , an oil pump 32 and an oil tank 33 . The oil pump 32 and the oil tank 33 are installed and fixed on the bottom plate of the lower frame of the frame 1. The oil pump 32 is connected with the oil tank 33 through pipelines, and the oil injection pipe 31 is communicated with the output pipe of the oil pump 32. The oil injection pipe 31 is a single multi-joint or multiple , the oil injection pipe 31 is connected with the small end of the connectin...

Embodiment 3

[0054] Embodiment 3 is formed on the basis of Embodiment 2, and realizes the collection and control of the operation data of each system through the matching control system to improve the test accuracy. specifically:

[0055] Such as Figure 1-9 As shown, the full-floating piston pin friction test device is also equipped with a control system. The control system mainly includes a central controller, which is electrically connected to the motion simulation system 2, the lubrication system 3, the loading system 4 and the heating system 5. The controller adjusts the operating parameters of each system through the feedback mechanism by receiving the corresponding operating data of the motion simulation system 2, the lubrication system 3, the loading system 4, and the heating system 5, including receiving the data transmitted by the angle sensor, the flow sensor, and the temperature sensor in real time. . The central controller receives the real-time detection data fed back by th...

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Abstract

The invention relates to a full-floating piston pin friction test device in the technical field of power machinery. The full-floating piston pin friction test device comprises a rack and a motion simulation system, the motion simulation system comprises force bearing seats, a connecting rod, a cam, a reset spring and a transmission mechanism, the force bearing seats are provided with shaft holes, the two force bearing seats are arranged on the rack in a spaced mode, the two shaft holes are used for installing a to-be-tested piston pin, and one end of the connecting rod is connected to the to-be-tested piston pin located between the two shaft holes in a sleeving mode; one end of the reset spring is connected to the side face of the connecting rod, the other end of the reset spring is fixed through the rack and the cam is in contact with the other side face of the connecting rod. The transmission mechanism drives the cam to rotate, the cam pushes the connecting rod to rotate, and the reset spring resets the connecting rod. During experimental research, the real state of the full-floating piston pin in actual work can be restored to the maximum extent, and powerful support is provided for deep research on the surface friction wear mechanism of the piston pin.

Description

technical field [0001] The invention relates to the technical field of power machinery, in particular to a fully floating piston pin friction test device. Background technique [0002] From small car engines to large marine engines, piston pins are one of the main working parts of internal combustion engines, and their service life has an important impact on the life of the entire engine. The piston pin needs to bear a huge load in the working process, and its surface also constantly generates friction with other parts. The degree of friction and wear of the piston pin has an important impact on the working performance of the whole machine. When the wear degree of the piston pin is too large, the gap between the bearing bush and the piston pin will increase, and the second-order motion of the piston pin will intensify, resulting in increased vibration and noise of the whole machine; The rod and the crankshaft below it will produce a strong rigid impact, and the connecting r...

Claims

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Application Information

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IPC IPC(8): G01N3/56
CPCG01N3/56Y02T90/00
Inventor 高礼宁付艳崔毅
Owner SHANGHAI JIAO TONG UNIV
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