SU505898A1

SU505898A1 - Pre-weighing scales

Info

Publication number: SU505898A1
Application number: SU1987046A
Authority: SU
Inventors: Анатолий Николаевич Нечаев; Анатолий Яковлевич Шенфельд; Василий Дмитриевич Борисов; Николай Александрович Безрядин
Original assignee: Скб-1 Завода "Госметр"
Priority date: 1974-01-16
Filing date: 1974-01-16
Publication date: 1976-03-05

Description

Изобретение относитс к весоиз,мерительной технике.The invention relates to weighing, measuring technique.

Известны весы с нредварительным взвешиванием , содержащие равноплечее коромысло с опорной и грузонриемными призмами, подвески с чаш:ками, изолирующий и отчетный механизмы.There are known scales with pre-preliminary weighing, containing an equal-arm rocker with support and load receiving prisms, suspensions with bowls: isolating and reporting mechanisms.

Однако эти весы не обеспечивают требуемую точность и быстродействие.However, these scales do not provide the required accuracy and speed.

:В весах, выполненных согласно изобретению , указанный недостаток устранен тем, что в них изолирующий механизм снабжен двум св занными пружиной рычагами-подхватами с разнонаправленным вращением, установленными на дополнительных нризменных опорах с осью вращени , смещенной ;зниз относительно лезви опорной призмы коромысла, и изолирующими коромысло нри нредварительном взвешивании.: In the weights made according to the invention, this disadvantage is eliminated by the fact that in them the insulating mechanism is equipped with two spring-connected pick-up arms with oppositely directed rotations mounted on additional bearing supports with an axis of rotation shifted; downwards relative to the blade of the support prism of the rocker arms, and insulating rocker with pre-weighing.

На фиг. 1 ноказаны описываемые весы в положении предварительного взвешивани ; на фиг. 2 - то же, в положении точного взвешивани .FIG. 1 shows the described scales in the pre-weighing position; in fig. 2 is the same in the position of accurate weighing.

Коромысло / установлено на опорной призме 2. На .коромысле / закреплены микрощ:кала 3 с указателем 4 и концевые призмы 5, 6, на .которые опираютс т ги 7, 5 с грузонриемными чашками 9, 10 с исследуемыми грузами 11, 12. На т ге 7 закреплена планка 13 с кольцевыми гир ми 14, съем и навескаThe yoke / is mounted on the supporting prism 2. On the feedthrough / there are fixed micros: cala 3 with pointer 4 and end prisms 5, 6 on which supports 7, 5 with load receiving cups 9, 10 with test loads 11, 12. This stage 7 is fixed with a strip 13 with ring weights 14, eat and attach

которых ведетс с помощью гиревого механизма 1/5.which is driven by a 1/5 weight mechanism.

Под коромыслом / помещены рычаги-подхзать 16, 17, установленные на дополнительных нризменных опорах 18 с осью вращени , смещенной вниз относительно лезви опорной призмы 2 на рассто ние Д/ пор дка 0,1 - 0,2 мм. Рычаги-подхваты 16, 17, имеющие разнонаправленное вращение, св заны между собой через пружину 19. На рычагах 16, 17 установлены регулировочные гайки 20 и нластина 21 успокоител с магнитом 22.Under the beam, the levers are placed 16, 17, mounted on additional bearing supports 18 with the axis of rotation displaced downward relative to the blade of the supporting prism 2 by a distance of D / about 0.1 - 0.2 mm. Levers for lifting the 16, 17, with multidirectional rotation, are connected to each other through the spring 19. On the levers 16, 17 are installed adjusting nuts 20 and nastina 21 damper with a magnet 22.

Винт 23 служит дл регулиг-оватги силы нат га пружины 19. Рычаги-подхваты 6, 17 с помощью упоров 24 сочлен ютс с коромыслом /ив положении предварительного взвешивани образуют 1коро.мы.сло «предварительного взвещивани . Рычаги-подхваты 16, 17 одновременно вл ютс элементаАП пзОоЧнрующего механизма 25-30 (25 - рычаги изолнра , 26 - пружина, 27 - , 2S - ручка изолирующего механизма, 29 - рычагл дл чашек, 30 - ограничители раскачг.ппнн чашек 9, 10).The screw 23 serves to adjust the tension of the tension of the spring 19. The lifting arms 6, 17 are connected to the rocker with the help of the stops 24 and, in the position of the preweighing, form the short layer of the pre-bulking. The levers 16, 17 are at the same time the elements of an anti-uc-locking mechanism 25-30 (25 - levers of iznarnra, 26 - spring, 27 -, 2S - handle of the isolating mechanism, 29 - levers for cups, 30 - limiters for different cups 9, 10 ).

Работают весы следующим обрпзсм.Scales work as following obrpzsm.

Claims

At first, the balance is in ;; l;; pi, pre-weighing, when the levers 16 and 17 are closed (see Fig. 1), and the support is applied to the prisms 18. The weight of the test weight is applied to the mating 9 // mass: QA-, which through 7, transmits the force to the prism 5 and deflects the beam /. The prism 2 of the rocker arm 1 at D / 0.1-0.2 mm does not touch its cushion, and therefore does not become dull and does not experience nagruaki. The opposing moment is created by the total mass of Koro-thought 1 and the levers of the arms 16, 17 together with the elements 19, 20, 2J. Therefore, the sensitivity of the scales is chopped up. The result of pre-measuring the mass Qxj, p is determined by microscale 5 and pointer 4. Then weights 14 are removed from bar 13 by means of a kettlebell mechanism 15, approximately equal in mass to Qx Qx (for example, with a shortage equal to the mass of the smallest weight 14 set ). A similar result can be achieved by placing weights with mass Qx on the cup 10, however, in this case the inequality of the arms of the rocker arm should be taken into account. Then, by turning the knob 28, the levers 25 are diverged (see Fig. 2) and act on the levers nodhvaty 16 , 17, which rotate in different directions on the supports 18, stretching the spring Y. The stops 24 come out of the articulation with the beam 1, the latter lowers, and the cups 9 and 10 are suspended therefrom. This position of the insulating mechanism 25-30 and the balance as a whole is the position of "accurate weighing - the sensitivity of the balance is increased. The yoke /, having the opportunity for free (Oscillations, is deflected by the residual unbalance on the mass -Qx- 0. The unbalance is measured on the microscale 3 and on the pointer 4 optically as a result of the exact weighing Qx. Qx ,, where Qx "and Qx are the results of preliminary and accurate weighing. Due to the fact that as levers of the" preliminary weighing, levers-clamps 16, 17 of the isolating mechanism 25-30 are used, the scales, except for the increased accuracy, Provision of scales with pre-weighing, containing equal-arm rocker with support and load-receiving prisms, suspension with cups, isolating and counting mechanisms, characterized in that, in order to improve accuracy and speed, the isolating mechanism is equipped with two connected spring levers with pickups with a razlanapravleniy rotation, mounted on additional prism supports e axis of rotation, shifted VNiz relatively blade blade Lrizma rocker, and isolate. SCHIM And a yoke with a preliminary vozveshivaniye.

Fig / 23

2. IS