B - Operations – Transporting – 23 – D
Patent
B - Operations, Transporting
23
D
143/42, 138/80.1
B23D 49/04 (2006.01) B23D 51/20 (2006.01)
Patent
CA 1066989
ABSTRACT OF THE DISCLOSURE: A control system for the main hydraulic cylinder of a metal sawing machine, comprising a hydraulic pump with piston srping and load plunger, actuated by a cam, wedged to the main shaft of the machine, and the piston chamber of the load plunger is connected through a suction valve to an oil reservoir and through a pressure valve - to the main hydraulic cylinders, which, on its part, is connected through a pressure oil conduit to the chamber of a plunger , disposed in a panel, on the outer surface of which there is formed a pressure cylindrical channel, which is connected through a radial and a cylindrical hole to the plunger chamber, and the plunger is supported by a regulable srping, the space around which is connected through a draining oil conduit to the oil reservoir, wherein the bow is provided with a carrier with recoil roller, being in contact with the conical end of a stepped plunger, and the plunger chamber is ring shaped, limited by the large diameter of the stepped plunger, being on the side of the regulable spring, and by the small diameter on its opposite side, and it is provided with an intermediate cylindrical channel, connected by means of an intermediate oil conduit to the piston chamber of the hydraulic pump, of which the piston spring is supported by a supporting cup with a hole, through which passes a limiting bolt, screwed-on in the load plunger.
285881
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