SU629389A1

SU629389A1 - Hydraulic cylinder

Info

Publication number: SU629389A1
Application number: SU772483713A
Authority: SU
Inventors: Анатолий Дмитриевич Григорьев; Борис Михайлович Куракин
Original assignee: Предприятие П/Я А-3501
Priority date: 1977-05-04
Filing date: 1977-05-04
Publication date: 1978-10-25

Description

Изобретение относитс к машиностроению .The invention relates to mechanical engineering.

Известен п цроцилинар, усилие на штоке которого кратковременно измен етс в начальный момент хоаа поршн . В этом гидроцилинпре поршень может перемещатьс относительно штока, а внутренн полость поршн , выполненна в виде коггической поверхности, взаимодействует с шариками, размещенными в полости поршн и передающими повышенное усилие на шток через коническую поверхность, выполненную на бурте штока flj.There is a known procylinar, the force on the rod of which briefly changes at the initial moment of the piston hoa. In this hydrocylin, the piston can move relative to the rod, and the internal cavity of the piston, made in the form of a cohesive surface, interacts with balls placed in the cavity of the piston and transmitting increased force to the rod through a conical surface made on the collar of the rod flj.

Опнако в этом гидроцилшшре увеличение усили на штоке происходит только на небольшом отрезке хода поршн .In this hydrocylster, however, an increase in the force on the rod occurs only in a small segment of the piston stroke.

Целью изобретени вл етс обеспечение изменени усили на штоке гидрюцилинцра по заланной программе на всей длине хоаа поршн .The aim of the invention is to provide a change in the force on the Gidrutsilintsra stem according to a program for the entire length of the piston.

Достигаетс она тем, что поршень гипроцилиндра снабжен плунжерами, на внутренней поверхности корпуса цилиндра выполнены продольные пазы с переменной по длине цилиндра площадью сечени , аIt is achieved by the fact that the piston of the hygrocylinder is provided with plungers, on the inner surface of the cylinder body there are longitudinal grooves with a variable cross-sectional length along the cylinder, and

в поршне - открытые во внутреннюю полость поршн радиальные пазы, в которых размещены плунжеры, вхоц щие в пазы цилиндра.in the piston — radial grooves open into the internal cavity of the piston, in which plungers are placed that enter the cylinder grooves.

Кроме того, внутренн полость поршн соединена каналами с рабочими полост ми цилиндра и в ней размещен переключающий клапан.In addition, the internal cavity of the piston is connected by channels with the working cavities of the cylinder and a switching valve is placed in it.

На фиг. 1 показан описываемый гиароцилиндр , продольный разрюз; на фиг. 2 то же, попер ечное сечение.FIG. 1 shows the described hcc, longitudinal opening; in fig. 2 the same, cross section.

П1дроцилиндр состоит из корпуса 1, в стенко которого вдоль по образующей выполнены продольные пазы 2, у которых опорна поверхность 3 может быть сменной с различной геометрией, поршн 4, раздел ющего гидроцилиндр на две. полости 5 и б, штока 7. В поршне размещеныThe cylinder consists of a housing 1, into the wall of which along the generatrix there are made longitudinal grooves 2, in which the bearing surface 3 can be interchangeable with different geometry, the piston 4 separating the hydraulic cylinder into two. cavities 5 and b, rod 7. In the piston are placed

плунжеры 8, поджатые к опорной поверхности 3 пружинами 9, переключающий клапан 10. Каналы 11 и 12 соедин ют полости 5 и 6 с внутренней полостью 13 в зависимости от перепада давлений вplungers 8, pressed against the bearing surface 3 by springs 9, switching valve 10. Channels 11 and 12 connect cavities 5 and 6 with the internal cavity 13 depending on the pressure differential in

Claims

these cavities j6 The hygrocylinder works as follows. When cavity 5 is connected to the pressure line, and cavity 6 is connected to the flow valve, switching valve 10 is activated and plunger cavity 13 communicates with discharge cavity 5 through channel 11. Piston .4 begins to move to the right while pushing out the plunger 8 under the influence of spring force and differential pressure in the cavity x 5 and b. Since the movement of the piston 4 and the plungers 8, the effective area of the piston begins to increase depending on the depth and width of the grooves 2 that. automatically leads to a change in the force on the rod. When the cavity 6 is connected to the pressure line, and cavity 5 from the drain, the switching valve 10 is actuated again and the plunger cavity 13 communicates with the nagation cavity 6 through channel 12. The piston 4 begins to move with simultaneous ramming of the plungers 8 Its surface begins to decrease depending on the geometry of the groove 2, which also leads to a change in the force on the brush. This cylinder allows you to automatically change the developed force by kfg / 5 W / g 89 given program, eliminating the use of additional control devices. Claim 1. Pistro cylinder, in the case of which the piston with shtoksm moves, and an internal cavity is made in the piston, characterized in that in order to smoothly change the piston of the plunger supplies on the inner surface of the case, according to a predetermined program, along the cross-sectional area, and in the port — radial grooves open into the internal cavity of the piston, p of which are installed plungers that enter the body’s grooves under the action of an elastic element, for example, a spring.

2. The hydraulic cylinder according to claim 1, in connection with the fact that, in order to use the operating pressure to create additional force on the plungers, the internal cavity of the piston is connected by channels to the working cavities of the cylinder and a switching valve is placed in it . Sources of information taken into account in the examination: 1. USSR author's certificate Ivfc 217828, cl. F 16 J 11/02, 1967. 7

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