SU409011A1 - TRANSFORMER EFFORTS TO HYDRAULIC - Google Patents

Description

one

This invention relates to pneumatic orthopedic automatics devices.

Mechanohydraulic transducers are known; 1i and type of position sensors, pressure gauges, transducer transducers. LIA containing throttle dividers of pressure 1 and membrane blomii oraviv.en.en1i input and output signals.

In order to improve the dynamic properties of the transducer and reduce the input forces in the proposed device, the plane of the rigid centers of the membrane block is displaced relative to |

The drawing shows the proposed Converter in the section.

The converter consists of a housing 1 containing feed channels, a choke divider with pressure head 2 and drain 3 nozzles, lids 4 and 5, a correction spring 6, a membrane unit, the membranes 7 of which have a hard center 8. The internal disks of hard centers serve as nozzle shutters . The membranes in the block are the same.

The device works as follows. When the supply pressure is applied in the intermembrane chamber, pressure appears, and the hybrid unit moves (downward in the drawing),

opening the drain nozzle of the divider and covering the power nozzle until pressure is established, the product of which by the difference of the effective areas of the membranes 5 will balance the force of the corrective spring 6.

The initial shift of the membrane unit I from the neutral position along the axis (in the drawing upwards) leads to a change in the effective

0 areas of membranes and the appearance of the difference in effective areas. Therefore, due to the presence of pressure in the intermembrane chamber, the displacement of the membrane 6vTOKa causes an axial force Ros, aimed at restoring the neutral position of the membrane unit (in the drawing downwards).

When the input force P is applied to the membrane unit, the equilibrium condition is violated. The membrane unit shifts, the gaps between the nozzles and the dampers change, and sets a new equilibrium condition, and the change in output pressure is proportional to the input force. Improved dynamic performance

5 is due to the fact that the change in pressure in the intermembrane chamber (Chip) is influenced not only by changing the position of the dampers relative to the nozzles (choke divider), but also by the displaced fluid, the equilibrium difference

space for working stroke.

The reduction of the input force in this construction is realized by obtaining on the membrane unit a large effective by displaced from the neutral position, a small resulting effective area and, accordingly, a smaller feedback force under strong equal conditions of the invention.

A force converter into a hydraulic signal containing a membrane unit with two identical membranes, a throttle divider placed in an intermembrane chamber, characterized in that, in order to improve the dynamic properties of the converter and reduce input forces, the planes of the rigid centers of the membrane unit are displaced relative to the membrane seals, the horizontal plane of symmetry of the throttle divider is offset relative to the plane of symmetry of the membrane unit.