JPS55104732A - Shaft torque detector for rotary machine - Google Patents

Shaft torque detector for rotary machine

Info

Publication number
JPS55104732A
JPS55104732A JP1195279A JP1195279A JPS55104732A JP S55104732 A JPS55104732 A JP S55104732A JP 1195279 A JP1195279 A JP 1195279A JP 1195279 A JP1195279 A JP 1195279A JP S55104732 A JPS55104732 A JP S55104732A
Authority
JP
Japan
Prior art keywords
rotary shaft
hole
rod
central axis
rotary machine
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP1195279A
Other languages
Japanese (ja)
Inventor
Hiromi Ogasawara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP1195279A priority Critical patent/JPS55104732A/en
Publication of JPS55104732A publication Critical patent/JPS55104732A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To measure torsional torque by a method wherein a through hole is made in a rotary shaft, a rod fixed on the rotary shaft at one end along a central axis of the hole is provided and mechanical displacement in proportion to the torsional torque is replaced by an electric signal and detected.
CONSTITUTION: A through hole is made in a rotary shaft and a rod fixed on the rotary shaft at one end along a central axis of the hole is provided as a movable electrode Ev. Fixed electrodes Ef1, Ef2 are provided on the rotary shaft near the free end of the rod so that a pair of variable capcitors C1, C2 are constructed. If relative rotational displacement between the rod and the rotary shaft occurs, capacitances of the pair of capacitors increases and decreases. Crystal resonators Xtal1, Xtal2 and oscillators OSC1, OSC2 are connected to each capacitors C1, C2 whose outputs are given to a mixer MIX, and a differential frequency signal Fd is taken out from the output terminal. Thus, the torque in the shaft of a rotary machine can be detected.
COPYRIGHT: (C)1980,JPO&Japio
JP1195279A 1979-02-05 1979-02-05 Shaft torque detector for rotary machine Pending JPS55104732A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1195279A JPS55104732A (en) 1979-02-05 1979-02-05 Shaft torque detector for rotary machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1195279A JPS55104732A (en) 1979-02-05 1979-02-05 Shaft torque detector for rotary machine

Publications (1)

Publication Number Publication Date
JPS55104732A true JPS55104732A (en) 1980-08-11

Family

ID=11791953

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1195279A Pending JPS55104732A (en) 1979-02-05 1979-02-05 Shaft torque detector for rotary machine

Country Status (1)

Country Link
JP (1) JPS55104732A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5886518U (en) * 1981-12-08 1983-06-11 日立建機株式会社 Capacitive displacement detection installation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5886518U (en) * 1981-12-08 1983-06-11 日立建機株式会社 Capacitive displacement detection installation

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