SU977853A1

SU977853A1 - Actuator device

Info

Publication number: SU977853A1
Application number: SU813300766A
Authority: SU
Inventors: Юрий Маркович Барац; Александр Артемович Белоцерковский; Юрий Петрович Жуков; Петр Иванович Котенко; Олег Михайлович Нешев
Original assignee: Донецкое Отделение Института "Гипроуглеавтоматизация"
Priority date: 1981-06-02
Filing date: 1981-06-02
Publication date: 1982-11-30

Description

(54) ИСПОЛНИТЕЛЬНОЕ УСТРОЙСТВО(54) EXECUTIVE DEVICE

1one

Изобретение относитс к средствам пневмогидроавтоматики.This invention relates to pneumohydroautomatic means.

Известно исполнительное устройство , содержащее зажатую в корпусе мембрану с жестким центром, шток и узел регулировани эффективной площади мембраны, выполненный в виде концевой пружины, расположенной между мембраной и упором, установленным с возможностью перемещени . При сжатии пру-|0 жины ее витки прижимаютс к мембране, что приводит к изменению ее эффективной площади f }.A actuating device is known, which contains a rigid center membrane clamped in the housing, a stem and a unit for adjusting the effective area of the membrane, made in the form of an end spring located between the membrane and the stop mounted for movement. When the spring is compressed, its coils are pressed against the membrane, which leads to a change in its effective area f}.

К недостаткам этого устройства следует отнести наличие пружины большой 5 жесткости (чтобы давление в камере не прогнуло ее), что способствует деформации мембраны и нат гиванию ее, в результате последн тер ет эластичность и, сйответственно, точность. 2The disadvantages of this device include the presence of a spring of high rigidity (so that the pressure in the chamber does not bend it), which contributes to the deformation of the membrane and its tension, as a result, the latter loses elasticity and, accordingly, accuracy. 2

Наиболее близким по технической сущности к предлагаемому вл етс устройство , которое содержит зажатую в корпусе Мембрану с жестким центромThe closest in technical essence to the present invention is a device that contains a rigid center membrane clamped in the housing.

и со штоком и узел регулировани эффективной площади мембраны, выполнен-, ный в виде перемещаемого ,относительно корпусажесткого центра, причем боковые поверхности корпуса и жесткого центра выполнены коническими f 2 J.and with the rod and the unit for controlling the effective area of the membrane, is made in the form of a movable relative to the body of the rigid center, and the lateral surfaces of the body and the rigid center are made conical f 2 J.

Такое выполнение устройства не обеспечивает высокой точности задани эффективной площади мембраны .Such an embodiment of the device does not provide a high accuracy of setting an effective membrane area.

Цель изобретени ,- повышение точг ности настройки эффективной площади мембраны.The purpose of the invention is to increase the tuning accuracy of the effective membrane area.

Claims

This goal is achieved by the fact that in a known actuator, comprising a housing sandwiched between parts of the housing, a membrane with a rigid center connected to the stem, and a node for adjusting the effective area of the membrane, the latter is in the form of an iris diaphragm containing crescent-shaped rotary petals which have contact with the membrane, and at one end of the crescent-shaped petals, 397 holes are made, 8 of which are located the pins fixed in the housing, and on the opposite ends of the petal The pins are installed in the slots of the slewing ring associated with the housing. The drawing shows the actuator in axonometric projection with cuts. The actuator consists of a membrane G sandwiched between parts of body 2 and 3. A rigid center k membrane 1 is connected to the stem 5. The area efficiency control unit is designed as an iris diaphragm 6 consisting of turning crescent crescents 7 with a crescent-shaped shape; put on pins 8, mounted in case 3, and on opposite ends of petals 7, pins 9 are installed, placed in slots 10 of rotating ring 11 rotating in case 3; Petals 7 of diaphragm 6 are located in direct contact with membrane 1, Rotation the rotary ring 11 is made using the handle 12 fixed on it. The separate elements of the actuating device are connected with each other with screws 13 and the split washer 1. The command pressure is supplied through nozzle 15. The device operates as follows. The change in the effective area of the membrane 1 and, consequently, the change in the transmission coefficient of the actuator, is made by changing the relative aperture of the iris diaphragm 6, with which the membrane 1 is in direct contact, within specified limits. To do this, by moving the handle 12, the diameter of the line of contact of the membrane 1 with the surface of the iris diaphragm 6 is changed. When command pressure is applied through the fitting 15, the membrane 1 bends. Force generated by command pressure through the hard center k associated with the rod 5 | depends on the area of the membrane 1. Changing the transmission coefficient of the actuator using the node for adjusting the effective membrane area in the form of an iris diaphragm improves the accuracy and smoothness of regulation compared to known devices, which determines the effectiveness of the invention in pneumatherapy devices. DETAILED DESCRIPTION OF THE INVENTION An actuating device comprising a housing sandwiched between parts of the housing is a membrane with a rigid center connected to the stem and an effective membrane area adjusting unit, characterized in that, in order to improve the accuracy of adjusting the effective membrane area, the effective area adjusting unit is an iris diaphragm containing crescent-shaped rotary petals, the lateral surfaces of which are conjugated with a membrane, and at one end of the crescent-shaped petals there are holes in the cat The pins are fixed to the body, and at the opposite ends of the petals there are pins placed in the slots of the rotary ring associated with the body. Sources of information taken into account in the examination of 1, USSR Author's Certificate W, class, G O G 5/00, 1968. 2, Water Nick V, I, Elastic membranes, M., Mashinostroenie, 197, p. 61, rice , 25 (prototype).