Automatic transmission piston simulation experiment device

[0018] Such as Figure 1~Figure 10 As shown, an automatic transmission piston simulation experiment device includes a test case 1, a test cover 2, a mounting shaft 3, a gasket 4, a temperature sensor 24, a displacement detector 25 and three sealing rings 6; the test case 1 A circular hole 11 is opened at the center of one of the two opposite end faces, and a sealing ring groove 12 is opened on the inner circumference of the circular hole 11, and the other end face of the two opposite end faces of the test shell 1 A multi-step step hole 13 coaxial with and communicated with the circular hole 11 is opened in the center. The other end surface of the test shell 1 is provided with a sealing ring groove 2 14 coaxial with the multi-step step hole 13. A plurality of protrusions 15 are uniformly arranged on the shoulder end surface of the multi-step hole 13 and the round hole 11 in the shell 1 adjacent to the round hole 11. One of the test shell 1 is provided with an exhaust hole 21, temperature sensor The temperature sensing hole 22 is connected to a temperature sensor 24, the oil filling hole 23 is connected to an oil injection valve, the test cover 2 is provided with a circular hole 16 at the center, and the inner circumference of the circular hole 16 A sealing ring groove three 17 is opened on the surface, the test cover 2 and the other end surface of the test shell 1 are detachably connected by a plurality of screws 5, and the test cover 2 is respectively provided with vent holes 8. The detection hole 9, the oil outlet hole 10 and a plurality of threaded holes 7 are arranged correspondingly and are connected to the exhaust valve. The displacement detection hole 9 is connected to the displacement detector 25, Once the product is damaged, the test oil can be discharged from the oil injection hole 10. The gasket 4 is arranged between the test cover 2 and the test shell 1. A circular hole 18 is opened in the middle of the gasket 4, and the circular hole 18 is on the inner circumference surface. Two notches 19 are provided, and the two notches 19 are arranged symmetrically with respect to the axis of the circular hole 18. The two notches 19 enable the displacement detector 25 to detect the displacement of the piston product and ensure that the gasket 4 is in place. The experimental device is balanced, the mounting shaft 3 is set in the circular hole three 18, the central part of the mounting shaft 3 is provided with a circular hole four 20 along the axial direction, the sealing ring groove 12, the sealing ring groove two 14 and The sealing ring 6 is installed in the sealing ring groove three.

[0019] The number of the multiple screws 5 is eight, and every two screws 5 are divided into four groups in one group, and the four groups of screws 5 are uniformly distributed.

[0020] The number of the plurality of threaded holes 7 is four, and a threaded hole 7 is provided between the two screws 5 of each group of screws 5. Its function is: the threaded hole can separate the test cover from the test case.

[0021] The materials of the test shell 1, the test cover 2, the mounting shaft 3 and the gasket 4 are all 45# steel, and the surfaces of the test shell 1 and the test cover 2 are respectively provided with galvanized layers. Its function is to prevent the surface of the test shell 1 and the test cover 2 from being corroded.

[0022] The model of the temperature sensor 24 is LVDT linear displacement GDD19.

[0023] The model of the displacement detector 25 is a split temperature sensor Pt100A grade platinum resistance.

[0024] In the present invention, the test shell 1 is in contact with the outer lip of the piston product. The size and roughness of the contact part of the test shell 1 and the outer lip of the piston product are consistent with the actual working conditions of the piston. The mounting shaft 3 is in contact with the inner lip of the piston product, and the mounting shaft 3 The size and roughness of the contact part with the inner lip of the piston product are consistent with the actual working conditions of the piston. The gasket 4 simulates the friction plate and can terminate the stroke of the piston product. The spring used in actual work is installed in the experimental device. The test case 1 and the test cover 2, the test case 1 and the mounting shaft 3, the test cover 2 and the mounting shaft 3 are sealed; the test case 1 and the test cover 2 are fixed together by a plurality of screws 5; the present invention is placed in a temperature control box In the experiment, the fuel injection valve is connected to control the pressure supply and pressure relief process of the automatic transmission piston in actual work, and the movement of the automatic transmission piston in the experimental device is monitored through the temperature controller and the displacement detector. If the piston of the automatic transmission is abnormal, it will leak oil through the oil outlet 10 on the test cover 2.

[0025] The above are only preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc., made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.