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[CN 201811157259.1] Hydraulic adjusting device for crank eccentricity of press machine
[CN 201811157259.1] Title of a hydraulic adjusting device for crank eccentricity of a press: Application number of a hydraulic adjusting device for crank eccentricity of a press: CN 201811157259.1 Applicant: Xi 'an Jiaotong University Application Date: 2018-9-30 Patent Type: Invention Application A hydraulic adjusting device for crank eccentricity of a press includes a transmission shaft, both ends of the transmission shaft are connected to the fuselage through bearings, and the middle of the transmission shaft is provided with four grooves up and down, among them, the two grooves on the upper part and the two grooves on the lower part are symmetrical. Plungers are installed in the grooves. The outer side of the plunger is connected with the eccentric ring. The four plungers and the transmission shaft form closed cavities A, B, C and D. One oil path of the transmission shaft is connected with the closed cavities A and B, and the other oil path is connected with the closed cavities C and D; one end of the transmission shaft is equipped with a rotary joint, one end of the two oil circuits of the rotary joint is connected with the two oil circuits of the drive shaft, and the other end of the two oil circuits of the rotary joint is connected with the hydraulic reversing valve; the other end of the drive shaft is connected with the driving device of the press; the present invention The reversing of the hydraulic reversing valve controls the amount of oil entering the closed chambers A, B or C, D, and the plunger will push the eccentric ring to displace, realizing real-time adjustment of the crank eccentricity, saving.
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