SU1489845A1

SU1489845A1 - Hydraulic vibration exciter

Info

Publication number: SU1489845A1
Application number: SU864165290A
Authority: SU
Inventors: Тамара Васильевна Алексеева; Роберт Петрович Кириков; Аскарбек Исаевич Джылкичиев
Original assignee: Сибирский автомобильно-дорожный институт им.В.В.Куйбышева; Киргизский Автомобильно-Дорожный Конструкторско-Технологический Институт
Priority date: 1986-12-22
Filing date: 1986-12-22
Publication date: 1989-06-30

Abstract

Изобретение относитс к вибрационной технике и может быть использовано в виброактивных рабочих органах землеройных машин в виброоборудовании дл формировани бетонных изделий и в виброиспытательных стендах. Целью изобретени вл етс повышение эффективности и упрощение конструкции устройства. Рабоча жидкость от насоса по напорной магистрали 6 подаетс в подпоршневую полость 5 гидроцилиндра 2 и далее через дроссели 7 и 8 и посто нные дроссели 11 и 17 - в надпоршневую полость 18 и сливную магистраль 14. При этом в результате превышени давлени в управл ющей полости 13 из-за перепада давлени на посто нном дросселе 11 дроссель 8 перекрываетс упругим элементом 10. Перепад давлени на посто нном дросселе 17 падает до нул . Возрастание давление в управл ющих полост х вызывает перекрытие дроссел 7 и мембранного уплотнител 15. Поршень движетс , сжима пружину 4, пока жидкость не перетечет из управл ющей полости 13 через посто нный дроссель 11 в сливную магистраль 14. Дроссель 8 открываетс , давление в управл ющих полост х падает, что приводит к открытию мембранного уплотнител 15 и дроссел 7, перетеканию жидкости через зазор между поршнем 3 и гильзой гидроцилиндра 2 из надпоршневой полости в подпоршневую и обратному движению поршн под действием пружины 4. 1 з.п. ф-лы, 2 ил.The invention relates to vibration technology and can be used in vibroactive working bodies of earthmoving machines in vibration equipment for the formation of concrete products and vibration testing stands. The aim of the invention is to increase the efficiency and simplify the design of the device. The working fluid from the pump on the pressure line 6 is supplied to the subpiston cavity 5 of the hydraulic cylinder 2 and further through the throttles 7 and 8 and the constant throttles 11 and 17 to the super piston cavity 18 and the drain line 14. In this case, as a result of the overpressure in the control cavity 13 due to the pressure drop at the constant throttle 11, the throttle 8 is overlapped by the elastic element 10. The pressure drop at the constant throttle 17 drops to zero. An increase in pressure in the control cavities causes the throttles 7 and the membrane seal 15 to overlap. The piston moves, compressing the spring 4 until the liquid flows from the control cavity 13 through the constant throttle 11 into the drain line 14. The throttle 8 opens, the pressure in the control cavity falls, which leads to the opening of the membrane seal 15 and throttle 7, the flow of fluid through the gap between the piston 3 and the cylinder liner 2 from the piston to the piston and the reverse movement of the piston under the action of the spring 4. 1 zp f-ly, 2 ill.

Description

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Claims

Claim

1. A hydraulic vibration exciter comprising a pump, a cylinder having a piston spring-loaded along the axis, a piston cavity for communication with a pressure manifold, two throttles installed in parallel, each having an elastic element, and a permanent throttle, an input and a control cavity of the first and second chokes input are designed for communication with the pressure line and with the piston cavity of the hydraulic cylinder, the output of the first and control cavity of the second throttles through a constant throttle and the output of the second throttle assigned to communicate with the drain line, characterized in that, in order to increase efficiency, it is equipped with a membrane seal located on the outer surface of the piston with a control cavity and a second permanent choke, the output of which is connected to the control cavity of the first and second inlet ports and the membrane seal cavity, and its input is with a pressure line, the throttles are located in the piston, and the inputs of the first throttle and the second constant throttle are designed to be connected in series with the pressure line Erez subpiston chamber of the hydraulic cylinder, and the outputs of the first and second permanent chokes designed for compound 5 with the drain line through the cavity above the piston.

2. Vibration exciter according to π. 1, characterized in that, in order to simplify the design, the working element of each throttle is made in the form of a sleeve for interaction with an elastic element having radial grooves and axial holes on an adjacent surface of the latter.

Sosta governor D. Shatilov