Synchronized hydraulic servo motor system专利检索-电液伺服作动器致动器机电学专利检索查询-专利查询网

Synchronized hydraulic servo motor system

阅读：468发布：2024-01-07

专利汇可以提供Synchronized hydraulic servo motor system专利检索，专利查询，专利分析的服务。并且Hydraulic system for moving common load or separate loads requires all drive members to move in synchronism. Two or more hydraulic servo motors are each provided with a hydraulically movable drive member. A synchronizing valve is interposed either in the conduit from the pressure fluid supply to each motor or in the conduit from each motor to the fluid reservoir to modulate the flow to its associated motor and includes two valve members which move with and with respect to each other. One valve member of each valve is attached to the drive member of its associated motor and the other valve member is attached to the drive member of the next preceding or succeeding motor so that all of the valves and motors are connected in a mechanical ''''closed-loop'''' series. When all motors are in synchronism, the two members of each valve move in the same direction in synchronism and do not affect the fluid flow. If any motor advances ahead of synchronism, the members of its associated valve are caused to move with respect to each other by mechanical linkages to restrict fluid flow and retard the leading motor until it is returned to synchronism. The system may be designed to onedirection operation or two-direction operation. In the onedirection system, a closed loop arrangement is not essential. In a modification, the valve porting may be arranged to restrict flow to the leading motor and also increase flow to the lagging motor to accelerate the return to synchronism. In a further modification, the porting may be shaped to give varying rates of change of flow for each increment of relative movement.，下面是Synchronized hydraulic servo motor system专利的具体信息内容。

权利要求

1. A synchronized hydraulic servo motor system comprising: a plurality of hydraulic servo motors adapted to operate in synchronism and each having a hydraulically movable drive member connected to a load; pressure fluid supply means; conduit means connecting the fluid supply means to the motors and at least two syncHronizing valve means interposed in the conduit means; each value means comprises two valve members movable together in synchronism and movable separately with respect to each other out of synchronism and mechanically connected to at least two separate drive members each of said drive members connected to one movable member from each of said valve means to be driven thereby; the advance of any drive member ahead of synchronism causing movement of the valve members with respect to each other to restrict fluid flow to the motor associated with such drive member and retard its movement until it is returned to synchronism.

2. A system as claimed in claim 1; the relative movement of the valve members out of synchronism acting to increase fluid flow to at least one lagging motor to accelerate the return to synchronism.

3. A synchronized hydraulic servo motor system comprising: at least two hydraulic servo motors adapted to operate in synchronism and each having a hydraulically movable drive member connected to a load; pressure fluid supply means; conduit means connecting the fluid supply means to each of the motors; and a synchronizing valve interposed in the conduit means between the pressurized fluid supply and each motor; each valve including first and second valve members movable with and with respect to each other and a flow path extending through the valve, with the valve members so constructed and arranged that relative movement in a first sense restricts flow and relative movement in a second, opposite, sense does not restrict flow; all of the valves and motors being arranged in a mechanical ''''closed-loop'''' series with each valve between succeeding motors and each motor between succeeding valves, and with one valve member of each valve drivenly connected to the drive member of the preceding motor and the other valve member drivenly connected to the drive member of the succeeding motor; the advance of the drive member of any motor ahead of synchronism causing relative movement of the valve members in the first sense in its associated valve to restrict fluid flow to such motor and retard its movement until it is returned to synchronism.

4. A system as claimed in claim 3; the advance of the drive member of such motor ahead of synchronism further causing relative movement of the valve members in the second, opposite, sense in the valves associated with the next adjacent motor to increase fluid flow to it and accelerate the return to synchronism.

5. A system as claimed in claim 3; in which one valve member of each valve is a sleeve having at least one port, and the other valve member is a core coaxially mounted within the sleeve and movable with and with respect to the sleeve; the core being relatively movable to positions restricting the opening in the port in varying degrees.

6. A system as claimed in claim 5; the valve members having a neutral, synchronized position in which the core partially restricts the port; the core being movable relative to the sleeve in one sense to further restrict the port and in the opposite sense to reduce the restriction of the port.

7. A system as claimed in claim 5; in which the valve members are caused to move linearly on their common longitudinal axis in the same direction by the drive members of adjacent motors.

8. A system as claimed in claim 5; in which the valve members are caused to rotate about their common axis in the same direction by the drive members of adjacent motors.

9. A system as claimed in claim 8; in which a first valve member has a port of predetermined size and the second valve member has a port of greater size elongated about the periphery, and in neutral, synchronized position the first port is located substantially at one end of the second port; the second port being relatively movable in one direction to restrict the second port and relatively movable in the opposite direction without restricting the first port.

10. A system as claimed in claim 3; in which one valve member of each Synchronizing valve is a sleeve having an inlet port and an outlet port, and the other valve member is a core coaxially mounted within the sleeve and relatively movable to positions restricting the opening in at least one of said ports; first and second conduits leading from the outlet port of each synchronizing valve to first and second adjacent motors; a first check valve in the first conduit openable under fluid pressure to allow fluid from the outlet port to the first motor; a second check valve in the second conduit to block fluid flow from the outlet port to the second motor; the elements being so connected and arranged that advance of the drive member of the first motor ahead of synchronism will cause the core to restrict at least one port in the sleeve to restrict fluid flow to the first motor and retard its action until it is returned to synchronism; and means to reverse fluid flow through the motors and synchronizing valves; the first check valve blocking return flow from the first motor to the outlet port and the second check valve opening in response to fluid pressure to allow fluid flow from the second motor to the outlet port to provide two-direction actuation of the motors; the synchronizing valve serving to control fluid flow to the second motor during reverse flow operation.

11. A system as claimed in claim 3; in which one valve member of each synchronizing valve is a sleeve and the other valve member is a core coaxially mounted within the sleeve; each sleeve having two longitudinally spaced inlet ports and two longitudinally spaced outlet ports; the core in neutral, synchronized position lying generally centrally between the ports and being movable longitudinally in either direction to restrict at least one of the ports; conduits extending from each of the outlet ports of each synchronizing valve to its associated motor; a direction control valve interposed in both conduits to each motor to selectively connect one of them to the motor for actuation in the selected direction; the motors and their associated synchronization valves being so connected that advance of any motor ahead of synchronization in either direction will actuate its associated synchronizing valve to restrict fluid flow to the motor to retard its movement until it is returned to synchronism.

12. A system as claimed in claim 3; each of the valve members of each valve having a port for fluid flow; the ports being of different cross sectional shapes and at least partially overlying each other in neutral, synchronized position to provide a common flow area sufficient for normal fluid flow; the valve members being so arranged that relative movement in one sense restricts fluid flow at varying rates and relative movement in the opposite sense enlarges the common area to increase fluid flow at varying rates.

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Synchronized hydraulic servo motor system

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