SU684168A1

SU684168A1 - Volumetrically regulated hydraulic drive

Info

Publication number: SU684168A1
Application number: SU782577112A
Authority: SU
Inventors: Юрий Анатольевич Данилов; Виктор Николаевич Ершов; Виталий Евдокимович Никонов; Юрий Аркадьевич Петров
Original assignee: Предприятие П/Я В-8670
Priority date: 1978-02-02
Filing date: 1978-02-02
Publication date: 1979-09-05

Description

1one

Изобретение относитс к гидроприводам объемного регулировани общего назначени .The invention relates to general purpose volumetric control hydraulic actuators.

Известен гидропривод объемного регулировани , содержащий насос объемного регулировани с регулирующим органом, св занный силовыми лини ми с гидромотором, механизм управлени , вспомогательный насос , св занный линией питани с механизмом управлени , и подпиточные клапаны 1.A volumetric regulation hydraulic actuator comprising a volumetric regulation pump with a regulator, connected by power lines to a hydraulic motor, a control mechanism, an auxiliary pump connected to a power line with a control mechanism, and make-up valves 1.

Недостатком такого гидропривода объемного регулировани вл етс недостаточно высокое быстродействие механизма управлени .The disadvantage of such a hydraulic volumetric regulation is the insufficiently high speed of the control mechanism.

Целью изобретени вл етс повышение быстродействи механизма управлени .The aim of the invention is to increase the speed of the control mechanism.

Указанна цель достигаетс тем, что гидропривод снабжен тахогенератором и блоком управлени с переливными клапанами, входы которых присоединены к силовым лини м , а выходы через последовательно соединенные двухпозиционный распределитель с электрической обмоткой управлени и дроссель - к линии питани механизма управлени , причем электрическа обмотка двухпозиционного распределител через релейный усилитель св зана электрнчес ;ni цепь .) с тахогенератором, вал которого соединен . регулирующим органом насоса.This goal is achieved by the fact that the hydraulic actuator is equipped with a tachogenerator and a control unit with overflow valves, the inputs of which are connected to the power lines, and the outputs through a series-connected two-way distributor with an electric control winding and a throttle to the power line of the control mechanism, and the relay amplifier is connected electrically; ni circuit.) with a tachogenerator, the shaft of which is connected. regulator of the pump.

Fla чертеже представлена c. гндро привода объемного регулнр./вани . Гидропривод объемного регулироваинг-;Fla drawing is c. Drive gear for volumetric regular / vani. Hydraulic actuator volumetric regulation;

состоит из насоса 1 объемного )егул)1ровани с регулирующим органом 2. св зашюго силовыми лини н 3 Н 4 с гнлромотором 5, .механизма 6 управлени , вспомогатгчьного насоса 7, св занного линией 8 питани .It consists of a pump 1 (volumetric) pump) with a regulating authority 2. its own power lines 3 N 4 with a motor 5, a control mechanism 6, an auxiliary pump 7 connected with a power supply line 8.

механизмом 6 управлени , подпиточных клапанов 9 и 10 и тахогенератора 11. Гидропривод .чмеет блок 12 управлен.и , содержащий переливные клапаны 13 и 14, двухнозиционный распределитель 15 с электрической обмоткой 16 управлени , дроссель 17 и релейный усилитель 18, св занный электрической цепью 19 с тахогенератором 11, и электродвигатель 20.control mechanism 6, make-up valves 9 and 10, and tachogenerator 11. The hydraulic actuator has a control unit 12 that contains overflow valves 13 and 14, a two-pole valve 15 with an electric control winding 16, a throttle 17 and a relay amplifier 18 connected by an electrical circuit 19 with a tachogenerator 11, and an electric motor 20.

Гидропривод объемного регулировани работает следующим образом.The hydraulic control volume works as follows.

Claims

When the electric motor 20 is turned on, the auxiliary pump 7 supplies the working fluid through the make-up valves 9 and 10 to the power lines 3 and 4 and via the power supply line 8 to the control mechanism 6. If there is an input signal, the control mechanism 6 rotates the regulator 2 of the pump 1. When the regulator 2 rotates at any speed, the signal from the tachogenerator 11, converted in the relay amplifier 18, goes to the electrical winding 16 and switches the distributor 15 to the position at which the power lines 3 and 4 of the hydraulic drive are connected to the power supply line 8 of the control mechanism 6. When the pressure rises in one of the power lines, for example 3, the valve 13 opens and the working fluid enters the supply line of the control mechanism 6, and the overflow valve 14 connected to the low pressure line 4 is closed. Thus, when the input signal of the hydraulic line changes, when a high response rate is required from the control mechanism, it is powered by a high-pressure working fluid from the main hydraulic lines of the hydraulic drive. The choke 17 is designed to select the optimum flow rate consumed by the control mechanism from the main hydraulic lines of the hydraulic drive. The use of this invention will improve the speed of volume control hydraulic actuators. Claims of the Invention: A volume control hydraulic actuator comprising a volume control pump with a regulator, connected by power lines to a hydraulic valve, a control mechanism, an auxiliary pump connected to a power line with a control mechanism, and charging valves, characterized in that, in order to improve speed, the hydraulic actuator is equipped with a tachogenerator and a control unit with overflow valves, the inputs of which are connected to the power lines, and the outlets through the series-connected two-position distribution An electric motor with a control winding and a choke are connected to the power supply line of the control mechanism, and the electric winding of the two-position distributor is connected via an electrical amplifier with a tachogenerator, the shaft of which is connected to the pump regulator through a relay amplifier. Sources of information taken into account in the examination 1. Leschenko V. A. Hydraulic follow-up drives of machine tools with program control. M., “Mashinostroenie, 1975, p. 195, fig. 104