Plunger returning device for bent axle connecting rod type radial plunger pump
A technology of crankshaft connecting rod and radial column, which is applied to the parts of the pumping device for elastic fluid, variable displacement pump parts, pumps, etc., and can solve the problem of increasing the structural size and complexity of the pump and the high pv value of the friction pair , affecting the service life of the pump and other issues, to achieve the effect of increased strength and rigidity, shortened size, and axial compactness
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[0025] Such as Figures 5a-5b , embodiment one,
[0026] A plunger return device for a crankshaft connecting rod type radial plunger pump, comprising a plunger 5, a pin shaft 4, a shaft pad 3 and a collar 6;
[0027] The lower end surface 11 of the shaft pad is a circular arc surface, and the lower end surface of the shaft pad is in shape with the outer ring 2 of the bearing of the cam 7. The upper end surface 9 of the shaft pad protrudes to form two symmetrical support platforms 10. The pin shaft The two ends of each are respectively supported on two symmetrical support platforms; the coupling end of the plunger is rotationally connected with the middle part of the pin shaft; a plunger 5, a pin shaft 4 and a shaft pad 3 form a plunger assembly;
[0028] A plurality of plunger assembly rings are arranged on the outer ring of the cam bearing, and the inner ring surface of the collar and the outer ring of the cam bearing radially limit the support platforms and / or pin ends of a...
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