SU538308A2 - Device for measuring the electrical contact resistance of two bodies - Google Patents

Device for measuring the electrical contact resistance of two bodies

Info

Publication number
SU538308A2
SU538308A2 SU2074038A SU2074038A SU538308A2 SU 538308 A2 SU538308 A2 SU 538308A2 SU 2074038 A SU2074038 A SU 2074038A SU 2074038 A SU2074038 A SU 2074038A SU 538308 A2 SU538308 A2 SU 538308A2
Authority
SU
USSR - Soviet Union
Prior art keywords
contact resistance
bodies
measuring
contact
electrical contact
Prior art date
Application number
SU2074038A
Other languages
Russian (ru)
Inventor
Николай Михайлович Коросько
Юхим Наумович Лернер
Original Assignee
Предприятие П/Я А-1984
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Предприятие П/Я А-1984 filed Critical Предприятие П/Я А-1984
Priority to SU2074038A priority Critical patent/SU538308A2/en
Application granted granted Critical
Publication of SU538308A2 publication Critical patent/SU538308A2/en

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  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Description

(54) УСТРОЙСТВО ДЛЯ ИЗМЕРЕНИЯ ЭЛЕКТРИЧЕСКОГО КОНТАКТНОГО СОПРОТИВЛЕНИЯ ДВУХ ТЕЛ(54) DEVICE FOR MEASURING ELECTRIC CONTACT RESISTANCE OF TWO BODIES

го контактного сопротивлени  двух тел, одно из которых выполнено в виде цилиндра (образец 1), закрепленного через изол ционную прокладку на двуплечем рычаге 2. Другое тело (образец З), выполненное в виде кольца, закреплено посредством изол ционной втулки 4 на оси 5, установленной в корпусе 6 на шарикоподшипниках. Исследуемые тела соприкасаютс  в точке 7. Источник стабилизированного тока 8 и измеритель напр жени  (например самопишуший милливольтметр) 9 присоединены к противоположным концам образцов 1 и 3. Электрическое присоединение образца 3 выполнено при помоши контактных пружин 10 и 11, закрепленных на изол ционном кронштейне 12.contact resistance of two bodies, one of which is made in the form of a cylinder (sample 1), fixed through an insulating gasket on the double-arm lever 2. The other body (sample 3), made in the form of a ring, is fixed by means of an insulating sleeve 4 on the axis 5 installed in the housing 6 on ball bearings. The test bodies are in contact at point 7. A source of stabilized current 8 and a voltage meter (for example, self-recording millivoltmeter) 9 are connected to opposite ends of samples 1 and 3. The electrical connection of sample 3 is made using contact springs 10 and 11 fixed to insulating bracket 12.

Пружины 10 и 11 касаютс  цилиндрической поверхности образца 3 в точках контактировани  13 и 14, расположенных на одной образующей с точкой соприкосновени  исследуемых тел по разные стороны от нее.The springs 10 and 11 touch the cylindrical surface of sample 3 at the points of contact 13 and 14 located on the same generator with the point of contact of the bodies under investigation on opposite sides of it.

Электрическое контактное с опротивление наход т как частное от делени  падени  напр жени  на ток.The electrical contact resistance is found as a quotient of dividing the voltage drop by the current.

Устройство работает следующим образом .The device works as follows.

Ось 5 приводитс  во вращение приводом , например электродвигателем с редуктором . При вращении образца 3 непрерывно измен етс  фактическа  площадь касани  между телами. Поэтому измер емое контактное сопротивление непрерывно измен етс . По этим же причинам непрерывно измен етс  контактное сопротивление между пружинами Ю, 11 и образцом 3,Axis 5 is driven by a drive, such as an electric motor with a gearbox. As sample 3 rotates, the actual area of contact between the bodies continuously changes. Therefore, the measured contact resistance is continuously changing. For the same reasons, the contact resistance between springs Yu, 11 and sample 3,

Колебани  контактного сопротивлени  на скольз щем контакте пружины 10 в цепи источника тока 8 не измен ет величину тока, поскольку цепь запитана стабилизированным током. Колебани  контактного сопротивлени  на скольз щем контакте пружины 11 в цепи измерител  напр жени  9The oscillations of the contact resistance at the sliding contact of the spring 10 in the circuit of the current source 8 do not change the magnitude of the current, since the circuit is powered by a stabilized current. Contact resistance oscillations at the sliding contact of the spring 11 in the voltage meter circuit 9

не сказываютс  на его показани х, поскольку входное сопротивление измерител  напр жени  на несколько пор дков больше контактного сопротивлени . Поэтому измеритель напр жени  показывает падение напр жени  только на контакте между исследуемыми телами. Касание пружинами Ю и 11 образца 3 в точках, расположенных на одной образующей с точкой соприкосновени  исследуемых тел по разные стороны от нее, позвол ет исключить обходные пути дл  измерительного тока. Применение самопишущего измерител  напр жени , например миллиамперметра типа Н-37 с усилителем типа И-37, позвол ет получить результат измерени  изменени  электрического контактного сопротивлени  во времени и при изнашивании в виде записи на диаграммной ленте.do not affect its performance, since the input resistance of the voltage meter is several orders of magnitude greater than the contact resistance. Therefore, the voltage meter shows a voltage drop only at the contact between the bodies under study. Touching the springs S and 11 of sample 3 at points located on the same generator with the point of contact of the bodies under investigation on opposite sides of it makes it possible to eliminate detours for the measuring current. The use of a self-recording voltage meter, for example, an H-37 milliammeter with an I-37 amplifier, allows one to obtain the result of measuring the change in electrical contact resistance in time and during wear as a record on a chart tape.

Claims (1)

1. Авторское свидетельство СССР1. USSR author's certificate МКИ G 01 R 27/00,MKI G 01 R 27/00, № 455297, 24.03.73. 7 5No. 455297, 03.24.73. 7 5
SU2074038A 1974-11-11 1974-11-11 Device for measuring the electrical contact resistance of two bodies SU538308A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU2074038A SU538308A2 (en) 1974-11-11 1974-11-11 Device for measuring the electrical contact resistance of two bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU2074038A SU538308A2 (en) 1974-11-11 1974-11-11 Device for measuring the electrical contact resistance of two bodies

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
SU455297A Addition SU107960A1 (en) 1955-01-31 1955-01-31 Device for measuring effective values of welding current on AC contact machines

Publications (1)

Publication Number Publication Date
SU538308A2 true SU538308A2 (en) 1976-12-05

Family

ID=20600393

Family Applications (1)

Application Number Title Priority Date Filing Date
SU2074038A SU538308A2 (en) 1974-11-11 1974-11-11 Device for measuring the electrical contact resistance of two bodies

Country Status (1)

Country Link
SU (1) SU538308A2 (en)

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