摘要:
The present invention relates to an assembly of a pressurized fluid mechanism and a brake coupled thereto. The assembly comprises an internal fluid distributor value having a communication face defining, within the housing of the assembly, two enclosures separated by the communication face and a brake comprising a brake-release chamber. The brake-release chamber is in permanent communication with at least one of the two enclosures resulting in a high yield motor of moderate cost.
摘要:
The invention relates to a radial piston engine, particularly a radial piston motor comprising a cylinder block within which a plurality of pistons and rollers are reciprocally mounted for cooperation with a cam path provided by a cam disc. Detent means are used to releasably locate the cylinders and rollers in a position corresponding with the lower dead point position of the pistons.
摘要:
A rotary fluid energy translating device which comprises a casing and a couple ring rotatably supported in the casing. Static fluid pressure is applied to the couple ring at circumferentially spaced points and from both the outer and the inner side of the ring so that a couple of forces is produced in the couple ring while providing balanced static pressure on the ring at each of the circumferentially spaced points thereby to rotate the couple ring, which can be connected to a mechanical element outside the casing. By positively rotating the couple ring by means of an external drive, it is possible to operate the device as a fluid pump.
摘要:
The invention relates to a hydraulic motor having an undulating cam and at least one large and one small selectable operating cylinder capacity. In the motor, cylinder feed orifices (41a, 42a) are distributed around the circumference of a circle about the axis of rotation (5), and the small cylinder capacity corresponds to an irregular angular distribution of active cylinder orifices (41a) which continue to be fed. This configuration makes it possible to provide a constant velocity motor with at least two different cylinder capacities and which is mechanically long-lasting.
摘要:
The invention relates to a fluid engine constituted by cylinders divided into two groups, by a valve bank which comprises two enclosures connected selectively to a source of fluid and to a reservoir, and connecting each cylinder of a first group, with the said enclosures, successively, and by means for selecting the speed of the engine, which means comprise a movable member adapted to occupy two positions which, in a first position, creates a communication between the cylinder of the second group and the enclosures, successively, and in a second position, isolate said cylinders from one of the enclosures.Said engine comprises a shuttle valve which, when the movable member is in its second position, connects the cylinders of the second group to that of the two enclosures which contains the fluid under the lowest pressure.The invention finds an application in the production of a mechanically reliable reversible engine.
摘要:
A cylinder block (1) has radial bores (3) of rectangular cross section with a piston comprising a hollow roller (5) and a piston cap (4). The rollers (5) are supported on an outer cam (2). The piston caps (4) are periodically exposed to the pressure (p) of a medium which is delivered to them via channels (11, 13) in side sealing plates (6,7) and via the hollow spaces (10) of the rollers (5). The piston caps (4) are provided with sealing strips (17, 18) resting on bore walls (8, 9) and with support ribs (19, 20). Each roller (5), with the two associated bore walls (8, 9), forms gaps each of which, together with the one sealing strip (17, 18) and bore wall (8, 9) define an intermediate chamber (p.sub.c, p.sub.o). From the intermediate chambers (p.sub.c, p.sub.o) channels (25, 26) lead in the piston cap (4) to the support faces ( 23, 24) of the support ribs (19, 20). The support face (23) lifting away during operation at a predetermined inclination of the cam (2) places the intermediate chamber with which it communicates under an intermediate pressure (p.sub.c) determined by the pertinent gap (h.sub.c) of the roller (5) and the bore wall (8), this intermediate pressure (p.sub.c) forcing a speed upon the cylinder block (1). The oppositely located intermediate chamber having low pressure (p.sub.o) is sealed off from the pressure (p) of the medium by the support face (24) of the other support rib (20) resting on the other bore wall (9). As a result, it is possible to reduce unavoidable leakage losses without impairing the mechanical efficiency of the unit.
摘要:
A fluid device has an inlet and a pumping chamber which is positioned in spaced relation to the inlet. The chamber is rotatably movable relative to the inlet. Apparatus is provided for contacting the fluid at the inlet at a preselected angle sufficient for accelerating the fluid into the chamber.
摘要:
A floating bearing ring is disposed between each bearing surface of the fixed pin and the guide member for the pistons and in spaced relation to each. The clearance of the bearing rings from the pin bearing surfaces is less than the clearance of the bearing rings from the guide member. Upon heating of the pin, the bearing rings simultaneously heat up to the same temperature to maintain their clearance. This prevents seizing of the bearing rings and, in turn, the guide member on the pin during use.
摘要:
A hydraulic pump or motor having: oil grooves in the internal partial-spherical surface of a piston for introducing pressure oil between said internal partial-spherical surface and a ball; oil grooves in the peripheral surface of the large diameter portion of said piston for introducing pressure oil between the outer peripheral surface of the large diameter portion of said piston and a cylinder; small diameter passages provided through said piston and extending from the upper end of said piston to said oil grooves, while communicating with an oil chamber for said piston; and necked or throttle portions provided in said small diameter passages, respectively, to thereby give rise to pressure drops for oil which is passing through said small diameter passages.
摘要:
In a pump or motor having a plurality of radial pistons adapted to perform a plurality of strokes per revolution, a stator, a rotor and a fluid-distributor slide valve fast with the stator and having a radially extending plane face opposite a radially extending plane face of said rotor, said slide valve is provided in a chamber which communicates with the interface between said faces and, by a pressure-maintaining device, with a substantially unpressurised enclosure such that the effect on said slide valve of the pressure of fluid in said chamber will substantially balance the effect of pressure of fluid acting on said interface between said faces.