SU627079A1

SU627079A1 - Self-setting stop nut of hoist

Info

Publication number: SU627079A1
Application number: SU772478103A
Authority: SU
Inventors: Борис Петрович Козырев
Priority date: 1977-04-12
Filing date: 1977-04-12
Publication date: 1978-10-05

Description

Изобретение относитс к области подъемно-транспортных устройств, а именно к винтовым-подъемникам с самоустанавликаюшейс опорной гайкой.The invention relates to the field of hoisting-and-transport devices, namely to screw-lifts with a self-supporting clipping nut.

Известна самоустанавливаюша с опорна гайка подъемника, содержаща корпус с закрепленными на нем стержн ми, гильзу и опорные шайбы со сферической поверхностью (1.The self-adjusting bearing nut of the lift is known, comprising a housing with rods fixed thereto, a sleeve and support washers with a spherical surface (1.

Недостатками этой гайки вл ютс низкий коэффициент полезного действи (к.п.д) винтового соединени и мала его износоустойчивость из-за возникающих значительных поперечных сил, а также дополнительные потери в месте контакта вилок и направл ющих.The disadvantages of this nut are the low efficiency (efficiency) of the screw joint and its low wear resistance due to the significant transverse forces that occur, as well as additional losses at the point of contact of the forks and guides.

Цель изобретени - повыщение к.п.д. винтовой пары путем уменьщени поперечных усилий в последней.The purpose of the invention is to increase the efficiency. screw pair by reducing lateral forces in the latter.

Это достигаетс тем, что на стержн х смонтирован с возможностью возвратнопоступательного перемещени хомут, на котором перпендикул рно стержн м установлены опорные элементы, взаимодействующие с упорами, закрепл емыми на грузовой площадке.This is achieved by the fact that a collar is mounted on the rods with the possibility of reciprocating movement, on which perpendicular to the rods are mounted supporting elements cooperating with stops fixed on the cargo platform.

Такое выполнение устройства позвол ет максимально сократить усили на самоустановку гайки в процессе работы и снизить поперечные силы, действующие в винтовсй паре.Such an embodiment of the device makes it possible to minimize the effort on the self-installation of the nut during operation and to reduce the lateral forces acting in the screw pair.

На фиг. 1 изображена схематически гайка, продольный разрез; на фиг. 2 то же, разрез А-А фиг. 1; на фиг.Зто же, разрез в точке пересечени осей.FIG. 1 shows a schematic of a nut, a longitudinal section; in fig. 2 is the same, section A-A of FIG. one; Figs. The same section in the point of intersection of the axes.

Claims

The nut includes body 1, screw-on sleeve 2, set of washers 3 with a spherical surface. Rods 4 having a common axis, perpendicular to the axis of the nut and passing through the intersection points with the radius of the spherical surface of the set of washers, are fixed on the housing on two opposite sides, with the clamp 5 being placed on the rods with the possibility of reciprocating movement Gui elements 6, having a common axis, perpendicular to the axis of the rods and nuts and passing through the point of their intersection, and the supporting elements are combined with stops 7 that are fixed relative to the nut. oystvo follows. When you turn on the work of the lift chassis screw 8 comes into rotation, and begins to raise or lower the nut of the lift. Placing the elevator plate in the horizontal plane relative to the screw is determined by the guides 9 with which the plate is connected. If the guides and the lead screw are not parallel during operation, the distance between the axis and their axes is changed. This change is compensated as follows. When the distance is changed, the nut is stirred along the axis of the support elements b, unloading the screw from the transverse loads. The arising force of friction in places of joint support elements and stops is much less than in the prototype because the distance (shoulder) between the opposite stops is increased. As the distance changes, the nut moves along the axis of the rods 4, unscrewing the screw from the transverse forces. With a simultaneous change in the distances Ja and B (in the case of the installation of guides and screws crossing, the movement of the nut occurs simultaneously along the axes of the rods and stops. The spatial spatial compensation occurs by rotating the system around the point O, i.e. on the spherical surfaces of the set of washers 3, by rotating the system around the axis of the rods 4 and the tukrug of the axis of the supporting elements 6. Thus, the system is freed from all ties except for the angular one, which keeps the nut from twisting when the lift works, which is mainly affected by the supporting elements ntami and fixed stops .. The design of the nut allows to reduce lateral forces in the screw pair, increase the efficiency and durability of the screw-up and screw connection. Claims Self-adjusting support nut of the lift, comprising a housing with rods fixed on it, a sleeve and support washers with a spherical surface, distinguishing from the fact that, in order to increase the efficiency of the screw pair of reducing the lateral forces in the latter, on the rods is mounted with the possibility of reciprocating, moving the clamp, On which perpendicular to the rods are mounted supporting elements that interact with stops, mounted on the cargo area. Sources of information (s, taken into account during the examination: 1. Drawing No. 58-27-33 on a lift installed in the drama theater in Almaty, developed by TsNIIEP of entertainment buildings and sports facilities named after BS Mezentsev, 1968.

4- +

X