SU1000591A1

SU1000591A1 - Plunger hydraulic machine

Info

Publication number: SU1000591A1
Application number: SU802998693A
Authority: SU
Inventors: Рим Фарахович Фарукшин; Сергей Васильевич Деменьшин
Original assignee: Предприятие П/Я А-3315
Priority date: 1980-08-29
Filing date: 1980-08-29
Publication date: 1983-02-28

Description

(54) ПЛУНЖЕРНАЯ ГИДРОМАШИНА(54) PLUNGER HYDRAULIC MACHINE

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Изобретение относитс к гидромашиностроению , в частности к аксиально-плунжерным машинам.The invention relates to hydraulic engineering, in particular to axial-plunger machines.

Известна плунжерна гидромашина, содержаща расположенные в полости корпуса блок цилиндров с полыми плунжерами , образуюш,ими с расточками цилиндров рабочие камеры и взаимодействующие с механизмом привода, установленным на выходном валу, причем внутри полых плунжеров установлены поршни со штоками, проход щими через торцовую стенку плунжера , с образованием двух внутренних полостей и взаимодействующими с блоком цилиндров 1 .A well-known plunger hydraulic machine, comprising a cylinder block with hollow plungers located in the housing cavity, forming working chambers with cylinder bores and interacting with a drive mechanism mounted on the output shaft, and pistons with rods through the end wall of the plunger installed inside the hollow plungers, with the formation of two internal cavities and interacting with the cylinder block 1.

Недостатком известной гидромашины вл етс разогрев плунжерной пары в результате трени и дросселировани жидкости в зазорах, а также низкий удельный объем.A disadvantage of the known hydraulic machine is the heating of the plunger pair as a result of friction and throttling of the fluid in the gaps, as well as a low specific volume.

Цель изобретени - повышение удельного рабочего объема.The purpose of the invention is to increase the specific working volume.

Указанна цель достигаетс тем, что внутренн полость между поршнем и торцовой стенкой плунжера св зана каналом, дополнительно выполненным в плунжере, с полостью корпуса, а в штоке выполнен сквозной канал, св зывающий другую внутреннюю полость, образованную плунжером и поршнем, с рабочей камерой.This goal is achieved by the fact that the internal cavity between the piston and the end wall of the plunger is connected by a channel, additionally made in the plunger, to the body cavity, and in the rod there is a through channel connecting the other internal cavity formed by the plunger and piston to the working chamber.

На фиг. 1 представлена схема плунжерной гидромашины; на фиг. 2 - плунжерный узел в положении всасывани ; на фиг. 3 - то же, в положении нагнетани .FIG. 1 shows a diagram of a plunger hydraulic machine; in fig. 2 - plunger assembly in the suction position; in fig. 3 is the same in the pumping position.

Claims

The axial-plunger hydraulic machine comprises a housing 1 with an internal cavity 2, an end distribution valve 3, a cylinder block 4 mounted on a shaft 5, in bores 6 of which plunger assemblies are placed, formed by a hollow plunger 7 with an end wall 8 and a piston 9 with a rod 10, mounted 15 in the central bore 11, made in the end wall 8, facing the end distribution spool 3, having a through channel 12. The pistons 9 with the stem 10 mounted inside the plungers 7 divide their internal volume by The cores 13 and 14. The cavity 13 formed by the end wall 8 of the plunger 7 and the walls of the piston 9 and the rod 10 is connected by a channel 15, additionally made in the plunger, with the internal cavity 2 of the housing 1. The cavity 14 is formed by the piston 9 and the walls of the plunger 7. Plungers 7 through the shoes 16 are supported on the inclined washer 17, forming with the shaft 5 a piston drive mechanism. The working chambers are formed by borings 6. And cavities 14. The hydraulic machine operates as follows. When the cylinder block 4 rotates, the plunger assemblies, due to the inclined arrangement of the support washer 17, make reciprocating movements. In the suction stroke, the plunger 7 extends from the cylinder block 4 and the piston 9 remains stationary relative to the cylinder block. As a result, the volume of the working chamber, as well as the cavity 14, increases and they are filled with liquid. The piston 9 is pressed to the bottom of the cylinder block 4 due to the pressure differential acting on the piston from the cavities 13 and 14. When the plunger 7 moves inside the cylinder block 4, the working fluid is displaced simultaneously from the cavity 14 through the through channel 15 of the rod 10 and from the bore 6 of the block cylinders. The joint of the floor 13 with the internal cavity 2 of the housing 1 serves to remove the heat generated during the operation of the machine. In this way, due to the formation of additional cavities, the volume of working fluid pumped per shaft rotation increases and the thermal condition of the plunger pair improves. Claims of the Invention Plunger hydraulic machine comprising cylinder block with hollow plungers located in the housing cavity, forming working chambers with cylinder bores and interacting with the drive mechanism mounted on the output shaft, and pistons with rods through the end wall of the plunger are installed inside the hollow plungers two internal cavities and interacting with the cylinder block, characterized in that, in order to increase the specific working volume, the internal cavity between the piston and the plunger end wall is connected by a channel, additionally formed in the plunger, with the housing cavity, and in the rod, a through channel is made connecting the other internal cavity formed by the plunger and piston to the working chamber. Information sources. taken into account during the examination 1. USSR author's certificate No. 284611, cl. F 04 B 1/20, 1969.

FIG. B