SU830438A1

SU830438A1 - Device for counting cycles of variable movement of mechanisms

Info

Publication number: SU830438A1
Application number: SU792809528A
Authority: SU
Inventors: Яков Шаевич Флейтман; Константин Иванович Емелин
Original assignee: Волгоградский Политехническийинститут
Priority date: 1979-08-13
Filing date: 1979-08-13
Publication date: 1981-05-15

Description

циклов переменного движени механизмов и возможность осуществлени этим механизмом вычитани зарегистрированных циклов при переменном движении механизмов в противоположную от первоначального направлени сторону.cycles of variable movement of mechanisms and the possibility of this mechanism subtracting registered cycles with variable movement of mechanisms in the opposite direction from the original direction.

Поставленна цель достигаетс тем что, в устройстве дл подсчета циклов переменного движени механизмов содержащем ведущую ось, фрикционно св занную с ведущим элементом мерно ленты, установленной в направл ющих и узел шагового перемещени ,выполненный в виде коромысла с прижимами на концах, ведущий элемент мерной ленты выполнен в виде каретки, котора установлена на ведущей оси соосно с коромыслом, которое фрикцион св зано с наружной поверхностью каретки .The goal is achieved by the fact that, in a device for counting cycles of variable motion of mechanisms, there is a drive axle, frictionally coupled with a leading element of a measuring tape, installed in guides and a step movement unit, made in the form of a rocker arm with clamps at the ends, the leading element of a measuring tape is made in the form of a carriage, which is mounted on a drive axle coaxially with a rocker, which is connected to the clutch outer surface of the carriage.

Выполнение ведущего элемента в виде каретки, установленной на оси возможностью поворота, позвол ет осуществить образование петлеобразнго изгиба мерной ленты независимо от направлени ее поворота от нейтрального положени . Фрикционна св зь между наружной поверхностью каретки и коромыслом позвол ет уже при малых поворотах каретки осуществл ть поворот коромысла до упора его прижимом в ленту и тем самым обеспечить поочередное фиксирование ленты от продольного смещени , что значительно упрощает узел шагового перемещени . Независимость образовани петлеобразного изгиба мерной ленты от направлени вращени ведущей оси и одновременное с поворотом каретки перекидное коромысло позвол ет осуществить вычитание зарегистрированных циклов при переменном движении механизмов в противоположную от первоначального направлени сторону.The execution of the leading element in the form of a carriage mounted on the axis by the possibility of rotation allows the formation of a loop-like bend of the measuring tape, irrespective of the direction of its rotation from the neutral position. The friction link between the outer surface of the carriage and the rocker allows even at small turns of the carriage to rotate the rocker arm all the way down by its clamping into the tape and thereby provide alternate fixation of the tape from longitudinal displacement, which greatly simplifies the step-by-step assembly. The independence of the formation of a loop-like bending of the measuring tape from the direction of rotation of the leading axis and the flip-arm simultaneously with the rotation of the carriage allow the subtraction of the registered cycles with a variable movement of the mechanisms in the direction opposite to the original direction.

На чертеже изображена функциональна схема устройства дл подсчета циклов переменного движени механизмов.The drawing shows a functional diagram of the device for counting cycles of variable motion mechanisms.

Устройство содержит ведущую ось 1, фрикционно св занную с ведущим элементом мерной ленты, выполненным в виде каретки 2, мерной ленты 3, установленной в направл ющих 4 и 5. Мерна лента представл ет собой ленту из бумаги, пластмассы , ткани с нанесенными на ее поверхность цифрами. Каретка 2 дл мерной ленты 3 установлена на оси соосно с узлом шаговых перемещений выполненным в виде коромысла 6 с :прижимами 7 и 8 на концах дл поочередной фиксации мерной ленты 3 к направл нлцим 4 и 5. Коромысло б фрикционно св зано с наружной поверхностью каретки 2. Фрикционна св зь как ведущей оси 1, так и коромыслаThe device contains a drive axle 1, which is frictionally connected with the drive element of a measuring tape, made in the form of a carriage 2, a measuring tape 3, installed in guides 4 and 5. The measuring tape is a tape made of paper, plastic, fabric coated on its surface in numbers. The carriage 2 for the measuring tape 3 is mounted on an axis coaxially with a node of step movements made in the form of rocker arms 6 s: clamps 7 and 8 at the ends for alternately fixing the measuring tape 3 to the directions 4 and 5. The yoke is frictionally connected to the outer surface of the carriage 2 Friction linkage of both drive axle 1 and rocker arms.

6 с кареткой 2 обеспечиваетс за счет усили пружины 9.6 with the carriage 2 is provided by the force of the spring 9.

Устройство работает следующим образом.The device works as follows.

Claims

In the initial position, the carriage 2 is in the neutral position and there is no loop-like bending of the measuring tape 3. The rotational movement of the monitored mechanism enters the drive axis 1. Let it rotate counterclockwise. At the same time, the carriage 2 simultaneously rotates with it. Already with a slight rotation of the carriage 2 mounted on an axis coaxially with the rocker frictionally connected to the carriage, the rocker 6 rotates and the clamp 7 fixes the measuring tape 3 from the longitudinal displacement. Further rotation of the carriage 2 bends the measuring tape 3 and at the same time it moves one step from the pressing side S. Then the leading axis rotates in the opposite direction. Simultaneously with the change in the direction of rotation, the leading axis changes the direction of rotation in the carriage 2. When it is turned slightly, the rocker 6 and clamp 6 and clamp 8 do not begin to fix the measuring tape, 3 from the longitudinal displacement, and the clamp 7 ceases to fix the measuring tape from the longitudinal offset . Further rotation of the carriage 2 of the measuring tape 3, initially curved, straightens out and performs a further step movement in the direction of the clamp 7 and the guide 4. With repeated variable movements of the monitored mechanism, the device operates in a similar way. The number of cycles of variable motion of the mechanisms is determined by the indications of the figures applied to the surface of the measuring tape. When the controlled mechanism moves to the opposite direction, from the initial position, the leading axis rotates clockwise. This causes the carriage 2 to rotate also clockwise and fasten the initial rotation, the tilting of the rocker arm 6, which with the clamp 8 fixes the belt 3 from the longitudinal displacement, and the carriage to rotate further. 2 bends her. At this time, the belt 3 moves one step from the side of the presser 7 and the guide 4. A reverse axis rotating shaft causes simultaneous rotation of the rocker arm b and the carriage 2, which in turn causes further step movement of the belt 3 in the direction of the presser 8 and the grove 5, i.e. causes the reversal of the direction of the stepping movement of the measuring tape 3. Thus, the proposed mechanism, by reversing the stepping movement of the measuring tape 3 depending on the direction of the rotational movement of the monitored mechanism relative to the initial position, allows the subtraction of the recorded cycles. In order to obtain an accurate step movement of the measuring tape, it is necessary to limit the angular rotation of the carriage 2 to the abutment (not shown in the drawing). This makes it possible to obtain a stable in size loop of the curved measuring tape 3. When using the mechanism only for counting cycles of variable movement of mechanisms in one direction from the initial position, it is necessary to exclude rotation of the carriage 2 in the direction opposite to the direction of movement of the controlled one. mechanism, when it returns to its original position. This can be done with additional emphasis. Compared with the known devices, the use in the proposed device as the slave element of the carriage measuring tape allows an increase in the number of mechanisms that can be counted by the device for alternating movement of mechanisms without a significant increase in its dimensions. The ability to determine the difference between the recorded cycles in the case of variable movement of the mechanisms in the direction opposite to the original direction allows for a wider use of the proposed device for examining the mechanisms, making it more obvious to make their Diagnostics and control parameters. If necessary, it is possible to tear off a piece of measuring tape from the display of I-7gP yA, corresponding to the number of worked cycles, for gluing in the test log. The coaxial arrangement of the carriage and the rocker reduces the size of the device compared with the known. The elimination of permanent magnets in the stepping unit reduces the cost of manufacturing the device and makes it more reliable. Apparatus of the Invention A device for counting cycles of varying motion of mechanisms, comprising a drive axle, frictionally coupled with a leading element of a measuring tape installed in guides, and a stepping movement assembly, made in the form of rocker arms with clamps at the ends, characterized in that, in order to simplify device and expansion of its field of application, the leading element of the measuring tape is made in the form of a carriage, which is mounted on the drive axis coaxially with the cylinder head, which is frictionally connected with the outer surface of the barrett. Sources of information taken into account during the examination 1. USSR author's certificate No. 314220, cl. G 06 M 3/08, 1971.

2. USSR author's certificate according to the application No. 259094.1 / 18-24, cl. G 06 M 3/08, 1978 (prototype). - | |