Hydraulic temperature compensator and hydraulic lift transmitter

摘要

The hydraulic temperature compensator has at least one longitudinally extensible hydraulic chamber and a gas-filled chamber which is at least partly enclosed by the hydraulic chamber, wherein the hydraulic chamber is subdivided into a first sub-chamber and a second sub-chamber which are hydraulically connected to each other by at least one throttle point and wherein the second sub-chamber adjoins the gas-filled chamber. The stroke transmitter has at least the hydraulic temperature compensator, a stroke actuator acting on the temperature compensator, and a further hydraulic chamber which is fluidically connected to the first sub-chamber of the hydraulic chamber of the temperature compensator, wherein the further hydraulic chamber is in fluidic connection with a displaceably mounted actuating element.

主权项

1. A hydraulic temperature compensator, comprising:
a gas-filled chamber; a longitudinally extensible first hydraulic chamber at least partly enclosing the gas filled chamber, the hydraulic chamber comprising a first sub-chamber and a second sub-chamber, the second sub-chamber adjoining the gas-filled chamber, the first hydraulic chamber being formed by:
an outer wall having an open first end;an inner wall having an open end, the inner wall being contactlessly inserted into the outer wall, the inner wall separating the second sub-chamber from the gas-filled chamber such that the inner wall at least partially defines the gas-filled chamber;a partition member having an open end and a partitioning section, the partitioning section being contactlessly inserted between the outer wall and the inner wall, the partitioning section separating the first sub-chamber from the second sub-chamber, the partitioning section having a throttle point to connect the first and second sub-chambers to each other;a hydraulic port coupled to the first sub-chamber for providing a fluid passage to a second hydraulic chamber associated with a movable actuating element;a common cover at a first side of the first hydraulic chamber and hermetically attached to the open end of the inner wall, the open end of the outer wall, and the open end of the partition member, the cover being longitudinally movable in response to a longitudinal force imposed on the cover by an actuator;a base coupled to or formed by a second end of the outer wall, the base being rigidly fixed; and wherein a longitudinal movement of the cover causes a compression of the first sub-chamber of the first hydraulic chamber, which forces a fluid flow from the first sub-chamber to the second hydraulic chamber associated with the movable actuating element via the hydraulic port.