SU534593A2

SU534593A2 - Nut piston

Info

Publication number: SU534593A2
Application number: SU1995752A
Authority: SU
Inventors: Петр Георгиевич Ильин; Александр Григорьевич Мартынов
Original assignee: Предприятие П/Я А-7657
Priority date: 1974-02-11
Filing date: 1974-02-11
Publication date: 1976-11-05

Description

1one

Изобретение относитс к области машиностроени .The invention relates to the field of engineering.

По основному авт,св.№ 179132 известна гайка-пистон, содержаща потайную головку с радиальными зубчиками на ее опорной поверхности. Корпус гайки-пистона покрыт эластичной герметизирующей пленкой и имеет проточку под головкой, в которую устанавливаетс уплотнитепьное кольцо.By the basic auto, St. 179132, there is a known piston nut containing a countersunk head with radial teeth on its bearing surface. The body of the nut-piston is covered with an elastic sealing film and has a groove under the head into which the sealing ring is installed.

Однако радиальные зубчики на опорной поверхности цилиндрической или конусной головки гайки-пистона не могут обеспечить; надежную контровку от прокручивани . Под действием крут щего момента при ввертывании или вывертывании болта на наклонных гран х зубчиков возникает вертикальна составл юща сила, котора приводит к разбалтыванию соединени и в конечном итоге к проворачиванию в теле детали гайки-пистонаHowever, the radial teeth on the bearing surface of the cylindrical or tapered head of the piston nut cannot provide; reliable scrolling. Under the action of a torque, when a bolt is screwed in or turned out on inclined faces of the teeth, a vertical component arises, which causes the joint to loosen and ultimately turn the piston nut in the body.

Кроме того, при установке гайки-пистона на деталь зубчики, расположенные на опоркной поверхности головки корпуса, своими острыми кромками врезаютс в деталь и таким образом создают концентраторы напр жени , что недопустимо дл высокопрочных материалов, примен емых в маш ностроении .In addition, when installing a piston nut on a part, the teeth located on the supporting surface of the body head, with their sharp edges, cut into the part and thus create stress concentrators, which is unacceptable for high-strength materials used in engineering.

При контровке с помощью зубчиков искгаочаетс возможность применени гаек-пистонов из алюминиевых и других пластичных сплавов.When contouring with the help of cloves, the possibility of using nut caps made of aluminum and other plastic alloys is ingrained.

Цель изобретени -повыщение надежности контровки и расщирение области применени .The purpose of the invention is to increase the reliability of the attachment and the expansion of the field of application.

Это достигаетс тем, что головка предлагаемой гайки-пистона снабжена радиальным эксцентриковым выступом.This is achieved in that the head of the proposed piston nut is provided with a radial eccentric protrusion.

На фиг, 1 изображена гайкзг-пистон, разрез; на фиг. 2 - вид по стрелке А на фиг. 1; на фиг, 3 - гайка-пистон в соединении деталей.Fig, 1 shows a g-piston, a slit; in fig. 2 is a view along arrow A in FIG. one; Fig, 3 - nut-piston in the connection parts.

Гайка-пистон состоит из корпуса 1, потайной головки 2 с радиальным эксцентриковым выступом 3.Nut-piston consists of body 1, a countersunk head 2 with a radial eccentric protrusion 3.

Claims

In the connection (Fig. 3), the nut-piston is installed in the hole of the part 4 and fixed by the collar 5. In this case, the head 2 with the eccentric protrusion 3 is located flush in the recess 6 in the part 4. The part 7 is connected to the part 4 by means of a bolt 8 screwed-in nut 35 1 screwed in box and secured against turning due to crimping 9. The gap between the wall of the hole in part 4 and housing 1 is filled with sealant 10. Jack-piston works as follows, In connected parts x 4 and 7 drills t holes of the desired diameter, in part 4 on the side of Ali 7 is made the recess 6 under the head 2 and the protrusion 3 H eccentrically relative to the axis of the apertures. A freshly prepared sealant 10 is applied to the surface of the prepared hole in part 4. A piston nut is installed in the hole so that its head 2 and the protrusion 3 are located in the recess 6 flush with the surface of the part 4. Since the head is eccentric relative to the body axis, it is reliable locks the nut against turning in the part 4. The flange 5, formed as a result of the piston being set up with a special tool, perceives the action of axial forces. 3 During the process of settling the piston nut, the inner ram and the sealant 10 fill all gaps, ensuring reliable sealing and surface protection against corrosion. After this, the part 7 is attached to the part 4 with a bolt S. The connection of the parts 4 and 7 without shear ensures that the bolt is cut. Such an embodiment of the nut-piston completely excludes the possibility of its scrolling during screwing in and out of the bolt, eliminates the formation of stress concentrators in the parts being joined, and makes it possible to manufacture the nuts-pistons from aluminum and other plastic alloys. Claims of the invention) Nut-piston according to aut. No. 179132, differing from the fact that, in order to increase the reliability of fixation against twisting and expansion of the field of application, its head is provided with a radial eccentric protrusion.

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