SU1465633A1

SU1465633A1 - Hydraulic system

Info

Publication number: SU1465633A1
Application number: SU874208740A
Authority: SU
Inventors: Борис Петрович Воловиков
Original assignee: Сибирский автомобильно-дорожный институт им.В.В.Куйбышева
Priority date: 1987-03-16
Filing date: 1987-03-16
Publication date: 1989-03-15

Abstract

Изобретение м.б. использовано в лесной и строительно-дорожной промышленности . Цель изобретени - повышение надежности работы гидравлической системы путем снижени динамических нагрузок при опускании груза . Гидроцилиндр 1 управлени захвата 2 и гидроцилиндр подъема св заны через распределители 8, 9 со своими напорными лини ми (Л) 10, 11 и сливом 12. Полость (П) 6 подъема снабжена клапаном 13 давлени с гид- роуправл емой настройкой. Переключатель 14 выполнен двухпозиционным трехлинейным гидроуправл емым и установлен в Л настройки клапана 13. Л 20 переключател 14 соединена с П 4, 5 через клапан ИЛИ 16. Л 20 соединена с П 6. Дросселирующее устр-во 21 установлено в Л 20 мезкду переключателем 14 и П 6. Устр-во 21 выполнено гидроуправл емым, Л 22 управлени к-рого подключена к Л 20. При увеличении давлени в П 6 клапан 13 обеспечивает разгрузку П 6 от высокого давлени . 1 з.п. ф-лы, 2 ил. i (ЛInvention m. used in the forest and road construction industry. The purpose of the invention is to improve the reliability of the hydraulic system by reducing the dynamic loads when lowering the load. The hydraulic cylinder 1 of the gripper control 2 and the hydraulic cylinder of the lift are connected via distributors 8, 9 to their pressure lines (L) 10, 11 and drain 12. The lifting cavity (L) 6 is equipped with a pressure valve 13 with a hydraulically adjustable setting. The switch 14 is made by two-way three-line hydraulically controlled and installed in L valve setting 13. L 20 switch 14 is connected to P 4, 5 through valve OR 16. L 20 is connected to P 6. The throttling device 21 is set to L 20 between the switch 14 and P 6. The device 21 is made hydraulically controlled, L 22 controls to which it is connected to L 20. With increasing pressure in P 6, valve 13 provides unload P 6 from high pressure. 1 hp f-ly, 2 ill. i (L

Description

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Составитель А.Стесин Редактор Л.Веселовска Техред.А,Кравчук Корректор В.РоманенкоCompiled by A. Steesin Editor L. Veselovska Tehred. And Kravchuk Proofreader V. Romanenko

Заказ 927/37Order 927/37

Тираж 602Circulation 602

ВНИИПИ Государственного комитета по изобретени м и открыти м при ГКНТ СССР 113035, Москва, Ж-35, Раушска наб., д. 4/5VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5

Производственно-издательский комбинат Патент, г.Ужгород, ул. Гагарина ОProduction and publishing plant Patent, Uzhgorod, st. Gagarin O

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Claims

Claim

1. The hydraulic system of the lifting mechanism, comprising a gripping control cylinder and a lifting cylinder, connected through distributors to its pressure lines and a drain, the lifting cavity of the lifting hydraulic cylinder having a pressure valve with hydraulic control, a switch made of at least two-position, installed in the valve settings line pressure associated with the lifting cavity of the lifting hydraulic cylinder, characterized in that, in order to increase the reliability of work by reducing the dynamics load when lowering the load, it is equipped with an OR valve and a throttling device, the switch is made three-line hydraulically controlled, and the third line of the switch is connected to the working cavities of the gripping cylinder through the OR valve, the control line of the switch is connected to the lifting cavity of the lifting hydraulic cylinder, and the throttling device is installed in the setting line a pressure valve between the switch and the lift cavity of the lift cylinder.

2. The hydraulic system according to n.1 _s, characterized in that ³ 1465633 throttling device made of which is connected to the third line by hydraulic control, the control line of the switch.