SU703633A1

SU703633A1 - Hydraulic distributor

Info

Publication number: SU703633A1
Application number: SU782643317A
Authority: SU
Inventors: Олег Аркадьевич Смирнов; Владимир Яковлевич Шкловский; Анатолий Николаевич Аникин; Александр Изосимович Шалыгин; Константин Николаевич Кондряков; Одилжон Якубов; Владислав Борисович Кузнецов
Original assignee: Всесоюзный научно-исследовательский институт строительного и дорожного машиностроения
Priority date: 1978-07-13
Filing date: 1978-07-13
Publication date: 1979-12-15

Description

1one

Изобретение относитс к гидрораспределител м гидроприводов строительных и дорожных машин.FIELD OF THE INVENTION The invention relates to hydraulic distributors for hydraulic drives of construction and road machines.

Известен гидрораспределитель гидроприводов строительных и дорожных машин, включаюш,ий напорные рабочие и сливные секции 1.The hydraulic distributor of hydraulic drives of construction and road machines is known, including pressure workers and discharge sections 1.

Известен также гидрораспределитель, преимуш,ественно гидроприводов стреловых самоходных кранов, включающий напорную и сливную секции и, по крайней мере одну рабочую секцию с переливным, напорным и сливными каналами и золотником управлени , промежуточные пластины с расположенными в них уплотнени ми, установленными между стыками секций, и ст гиваюшие секции шпильки с гайками 2.Also known is a hydraulic distributor, advantageously of hydraulic actuators of jib self-propelled cranes, including pressure and discharge sections and at least one working section with overflow, pressure and drain channels and a control spool, intermediate plates with seals located in them that are installed between the joints of the sections, and stiffing studs with nuts 2.

Однако в таком гидрораспределителе изза неплоскостности промежуточных пластин , а также притычных поверхностей секций при ст гивании секций шпильками не исключаетс зашемление золотников гидрораспределител .However, in such a valve, due to the flatness of the intermediate plates, as well as the adjacent surfaces of the sections, when the sections are tightened with studs, the control valve spools are not excluded.

Цель изобретени - повышение надежности гидрораспределител за счет обеспечени разгрузки золотников управлени отThe purpose of the invention is to increase the reliability of the hydraulic distributor by providing unloading control spools from

защемлени при ст гивании секций шпильками .pinching when the sections are stiffening.

Дл достижени цели в промежуточных пластинах с двух сторон выполнены ориентированные вдоль, золотников управлени пазы.To achieve the goal, the intermediate plates on both sides are made along grooves oriented along the spools.

На фиг. 1 изображен предлагаемый гидрораспределитель; на фиг. 2 - то же, разрез А-А на фиг. 1; на фиг. 3 - разрез Б-Б на фиг. 1.FIG. 1 shows the proposed valve; in fig. 2 is the same, section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one.

Гидрораспределитель состоит из напорной секции 1, рабочей секции 2 с золотником управлени 3 и сливной секции 4. Между секци ми установлены металлические пластины 5 и 6, в которых размещены кольца с круглым сечением дл уплотнени напорного канала 7, сливных каналов 8 и 9 и переливного канала 10. Секции ст гиваютс шпильками 11, на которые навернуты гайки 12. На металлических пластинах выполнены пазы 13 и 14.The valve consists of a pressure section 1, a working section 2 with a control spool 3 and a drain section 4. Metal plates 5 and 6 are installed between the sections, in which rings with a circular cross section are placed to seal the pressure channel 7, the drain channels 8 and 9 and the overflow channel 10. Sections are fastened with studs 11, on which nuts are screwed 12. Grooves 13 and 14 are made on metal plates.

Claims

Fluid from the pump hydraulic system of the tank enters the hole 15 of the pressure section 1 and further along the overflow channel 10 of the working section 2 is directed to the drain section 4. From the hole 16 of the drain section, the liquid is discharged into the hydraulic system tank. When the position of the control spool 3 is on, the liquid is directed through one of the taps 17 or 18 to the hydraulic engine, and through the other branch from the hydraulic engine to the hydraulic distributor. When the sections are tightened with studs 11, the pulling force is transmitted to the side surfaces of the sections, except for surfaces along the control spools, limited to nazami 13 and 14 in the intermediate plates 5, and 6. Thus, the zone in which the control spools are located is unloaded from the puff forces , and spools are prevented from jamming during assembly, which increases the reliability of the control valve. The invention of the hydraulic distributor, mainly hydraulic boom cranes, includes a pressure and discharge sections and at least one working section with overflow, pressure and drain channels and a control spool, intermediate plates with seals located in them, installed between the section joints, and station crank sections with nuts, characterized in that, in order to increase the reliability of the control valve by ensuring unloading of the control spools from pinching during the tightening of the spindle sections kami, in the intermediate plates on both sides oriented along the spool formed control grooves. Sources of information taken into account in the examination 1. US Patent No. 2586932, cl. 91-413, 1952.

2.Vasilchenko V.A. and Berkovich F.M. Hydraulic drive of construction and road machines. M., stroiizdat, 1978, p. 77-78, fig. 24

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