SU939847A1

SU939847A1 - Reciprocation motion piston engine

Info

Publication number: SU939847A1
Application number: SU782651445A
Authority: SU
Inventors: Юрий Васильевич Козлов; Борис Иванович Шубенков; Иван Николаевич Елисеенко; Григорий Миронович Клейман; Владимир Валентинович Ведерников; Виталий Марианович Марквартде
Original assignee: Московский Завод Тракторных Гидроагрегатов
Priority date: 1978-07-17
Filing date: 1978-07-17
Publication date: 1982-06-30

Description

1one

Изобретение относитс к гидромашиностроению и может быть использовано дл привода активных рабочих органов машин, оовершающих возвратно-поступательное движение .The invention relates to hydraulic engineering and can be used to drive the active working parts of machines performing reciprocating motion.

Известны гидродвигатели возвратно-поступательного движени , содержащие цилиндр, поршень с двусторонним штоком, распределительное золотниковое устройство, измен ющее направление движени поршн за счет подачи к торцу золотникового устройства рабочей жидкости под давлением при достижении поришем крайнего положени 1 .Reciprocating hydraulic motors are known, comprising a cylinder, a piston with a double-sided rod, a distribution spool device that changes the direction of the piston movement by supplying working fluid under pressure to the end face of the spool device when it reaches the end position 1.

Известен также поршневой гидродвигатель возвратно-поступательного движени , содержащий цилиндр, расположенный в нем поршень двустороннего действи , образующий с .цилиндром две рабочие полости, кажда из которых гидравлически св зана каналом с соответствующей полостью распределительного устройства, а шток поршн снабжен выточками дл управлени распределительным устройством. Дл того, чтобы уменьшить воз-, можность возникновени гидравлическогоA reciprocating reciprocating hydraulic motor is also known, comprising a cylinder, a double-acting piston located therein, which forms two working cavities with the cylinder, each of which is hydraulically connected by a channel with a corresponding distributor cavity, and the piston rod is provided with recesses for controlling the distributor. In order to reduce the possibility of hydraulic

удара в замкнутом объеме при достижении поршнем крайнего положени , в известном гидродвигателе распределительное устройство выполнено ступенчатым (дифференциальным). Благодар этому часть объема из запоршневой полости гидродвигател поглащаетс в распределительном устройстве при подходе поршн к крайнему положению 2.impact in a closed volume when the piston reaches the extreme position, in a well-known hydraulic engine the switchgear is made stepwise (differential). Due to this, part of the volume from the hydraulic piston cavity is absorbed in the switchgear when the piston approaches extreme position 2.

Однако подобные конструктивные выполнени гидродвигателей не исключают возмож10 ности гидравлического удара в конце хода поршн .However, such constructions of hydraulic engines do not exclude the possibility of hydraulic shock at the end of the piston stroke.

Пель изобретени - повышение надежности путем уменьшени вбзможности возиикиовени гидравлического удара.The invention is an increase in reliability by reducing the possibility of a water hammer.

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Указанна цель достигаетс тем, что поршневой гидродвигатель возвратно-поступательного движени содержит цилиндр, расположенный в нем поршень двустороннего действи , образующий с цилиндром две рабочие This goal is achieved by the fact that the reciprocating piston hydraulic motor comprises a cylinder, a double-acting piston located in it, forming two working pistons

Claims

20 cavities, each of which is hydraulically connected by a channel with a corresponding cavity of the distribution device, and the piston rod is provided with recesses for controlling the distribution device, while each working cavity is communicated with an additional channel with the corresponding additional cavity of the distribution device, and both channels of each working cavity are hydraulically connected to each other by a channel with a throttling device provided therein. The drawing shows the structural scheme of the proposed gkdrodvigatel. The hydraulic motor includes a housing 1 with a cylinder, a piston 2 with a double-sided brush, distribution sleeves 3 and 4, a distribution device (spool) 5. A booster 6 is placed in the bore of the distribution spool 5, made on one of its sides (in the drawing on the right side), to the end of which pressure from the pressure line of hydraulic systems is constantly applied. When the distribution valve 5 is shifted to the left (as shown in the drawing), the movement of the piston 2 also occurs to the left. The spool is kept in the left position by the force created by the pressure from the pressure line acting on the bottom of the bore boring 6. When the piston 2 passes through the left drain channel 7, a buckle 8 connects an annular groove 9 in the spindle, filled in the distribution sleeve 4 and permanently connected with a pressure line, with an annular groove 10 through a radial and inclined hole in the sleeve 4. The ring groove 10 is permanently connected to the left end of the distribution valve 5 through an inclined hole 11, therefore, under The pressure in the pressure line to the left end of the spool, the area of which is larger, for example twice the bottom area of the bore for the booster 6, the spool 5 will move to the right until it stops in the right housing cover 1. When the piston 2 completely blocks the drain channel 7, the working fluid will be drained from the left the hydraulic motor is carried out only through the throttle bore 12. This reduces the speed of the piston to the left, prevents a pressure jump when the piston stops and mitigates its impact on the end of the distribution sleeve 4. After moving, distributes The solid fuel 5 to the right, the injection and discharge cavities of the hydraulic engine are reversed, and the piston 2 changes direction. In this case, the left rod locks the working fluid behind the left end of the distribution spool 5, which keeps the latter from displacing the piston in the right direction. When the piston 2 passes through the right drain channel 13, the groove 14 on the rod connects an annular groove 15, made in the distribution sleeve 3 and permanently connected to the drain through the boring under the slide valve, drilling 16 and channel 17, with the annular groove 18 through a radial and inclined hole integrated in the distribution sleeve 3. The groove 18 is connected through channel 19 permanently with the ring groove 10 of the distribution sleeve 4. Thus, the volume with the working fluid behind the left end of the distribution spool 5 is connected to the drain ohm Under the action of the pressure generated by the pressure line acting on the bottom of the bore of the booster 6, the distribution valve 5 is shifted to the left, switching the supply and discharge of the working fluid. When the piston 2 closes the channel 13, the working fluid is drained from the right side of the hydraulic motor only through the throttle orifice 20. This reduces the speed of movement of the engine to the right at the end of the stroke. The proposed hydraulic motor compared to the known has a simpler design, more technological in manufacturing and reliable in operation, and also provides the absence of water hammer at the end of the piston stroke. Piston reciprocating hydraulic motor comprising a cylinder, a double-acting piston located therein, forming two working strips ™ with the cylinder, each of which is hydraulically connected by a channel with a corresponding cavity of the distribution device, and the piston rod is provided with recesses for controlling the distribution device, characterized in that, in order to increase reliability by reducing the possibility of water hammer, each working cavity is communicated to additionally channel with the corresponding additional dispenser cavity, and the two channels of each working chamber hydraulically coupled by a channel provided therein with a throttling device. Sources of information taken into account in the examination 1. Bogdanovich L. B. Volumetric hydraulic actuators. Kiev, Technique, 1971, p. 50. fig. nineteen.

2. Author's certificate of the USSR N 305282, cl. F 15 В 13/04, 1971 (prototype).