SU937840A1

SU937840A1 - Adjustable-diameter drum

Info

Publication number: SU937840A1
Application number: SU803233889A
Authority: SU
Inventors: Михаил Исаакович Янкилевич; Юрий Игоревич Рагузин
Original assignee: Предприятие П/Я А-1701
Priority date: 1980-12-17
Filing date: 1980-12-17
Publication date: 1982-06-23

Description

(5) БАРАБАН С РЕГУЛИРУЕМЫМ ДИАМЕТРОМ(5) DRUM WITH ADJUSTABLE DIAMETER

1one

Изобретение относитс к машиностроению , а именно к области грузоподъемного оборудовёни .The invention relates to mechanical engineering, namely to the field of lifting equipment.

Известна цепна передача транспортных устройств, содержаща т говый орган и ведущую звездочку с плавающими зубь ми, скольз щими по копиру, у которой профиль копира описан кривой по определенному закону The known chain transfer of transport devices containing a traction body and a drive sprocket with floating teeth sliding along a copier, in which the profile of the copier is described by a curve according to a certain law.

Недостатком такой передачи вл - ю етс сложность конструкции и мала универсальность при настройке на различные производственные процессы.The disadvantage of such a transfer is the complexity of the design and low versatility when setting up for various production processes.

Наиболее близким к изобретению вл етс барабан с регулируемым диа- i$ метром, содержащий вал, на котором установлены подвижные в радиальном направлении кронштейны с канавками и устройством дл регулировани радиусов канавок. Регулируемые диамет- 20 ры устанавливаютс -.следующим образом . С помощью резьбового соединени . направл юща регулировочного устройства перемещаетс вдоль оси валаClosest to the invention is a drum with an adjustable diameter, comprising a shaft on which radially movable arms with grooves and a device for adjusting the radii of the grooves are mounted. Adjustable diameters of 20 ry are set as follows. By means of a threaded connection. the guide of the adjusting device moves along the axis of the shaft

и через рычажный механизм смещает ползуны с канавками в радиальном направлении на необходимыйдиаметр. Ползуны с канавками перемещаютс по радиальным пазам, имеющимс в направл ющем диске, закрепленном на валу 2 .and through the lever mechanism shifts the sliders with grooves in the radial direction to the required diameter. Sliders with grooves move along radial grooves in the guide disk mounted on shaft 2.

Недостатком данного устройства вл етс невозможность получени различной скорости вращени вала барабана при посто нной скорости разматывайи гибкого элемента.The disadvantage of this device is the impossibility of obtaining different speeds of rotation of the drum shaft at a constant speed of unwinding of the flexible element.

Цель изобретени - обеспечение различной, скорости вращени вала барабана при посто нной скорости разматывани гибкого элемента .The purpose of the invention is to provide a different, rotational speed of the drum shaft at a constant unwinding speed of the flexible element.

Claims

This goal is achieved by the fact that in a drum with an adjustable diameter containing a shaft on which radially movable brackets with grooves and a device for adjusting the grooves' radii are mounted on the drum shaft sequentially and 3 a equal angles, forming a screw direction. At the ends of the shaft there are rollers of different diameters, between which brackets are located. A: FIG. 1 shows a drum with a controlled diameter, end view; in fig. 2 - drum shaft with rollers | And brackets. The drum with an adjustable diameter contains a spline shaft 1, at the ends of which rollers 2 and 3 are mounted. Between rollers 2 and 3 on shaft 1, moving brackets are assembled along its axis along a helical shape. Each of the brackets k has a movable groove 5 for the flexible element 6. The grooves 5 of all the brackets are arranged in a spiral. The drum works as follows. On shaft 1, rollers 2 and 3 are assembled and fixed, and brackets A are in the desired position. The grooves 5, the flexible element 6, which are guided by the grooves 5 and pulled by an external device at a constant speed, rotate the drum shaft i at a variable, predetermined speed, are adjusted to a predetermined position about the axis. The use of the proposed drum with an adjustable diameter makes it possible to obtain the speed varied according to a given law in test benches, thereby expanding the range of measurements on the benches, as it allows to vary additionally with increasing acceleration of the test object. Claim 1, A variable diameter drum comprising a shaft on which radially movable arms with grooves and a device for adjusting the radii of grooves are installed, characterized in that, in order to provide different rotation speeds of the drum shaft at the brackets are mounted on the shaft in series and are shifted relative to each other by equal angles, forming a screw guide, 2. A drum with; adjustable diameter, POP.1, characterized in that ends of the shaft with rollers of different diameters, between which brackets Sources of information received note in the examination 1.Avtorskoe If Certificate USSR 330291, cl. F 16 And 7/06, 1972

2. German patent number 67288, CL. kj h 15, 1937 (prototype).