JPS57132012A - Detector for angle of elevation of boom - Google Patents

Detector for angle of elevation of boom

Info

Publication number
JPS57132012A
JPS57132012A JP1767281A JP1767281A JPS57132012A JP S57132012 A JPS57132012 A JP S57132012A JP 1767281 A JP1767281 A JP 1767281A JP 1767281 A JP1767281 A JP 1767281A JP S57132012 A JPS57132012 A JP S57132012A
Authority
JP
Japan
Prior art keywords
boom
angle
elevation
photodetector
detected
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
JP1767281A
Other languages
Japanese (ja)
Inventor
Toshio Nishida
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP1767281A priority Critical patent/JPS57132012A/en
Publication of JPS57132012A publication Critical patent/JPS57132012A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes

Abstract

PURPOSE:To improve the workability and accuracy of angle detection and to simplify a titled device by combining a stationary plate which moves together with a boom, and a light emitting device and a photodetector which stay still in a constant position in spite of the depression or elevation of the boom. CONSTITUTION:While a rocket 5 and a boom 3 are in a vertical state, a light emitting device 14 and a photodetector 15 are opposite to the point (a) of a light transmission part 12, and the light transmitting through the part 12a is detected with the photodetector 15, wherby it is detected that these are in the vertical position. When the rocket 5 and the boom 3 are depressed or elevated to an angle theta of elevation, an arc-shaped stationary plate 12 displaces relatively by an angle alpha, that is, the angle of elevation. On the other hand, a static member 11 does not move in spite of the depression or elevation of the boom 3 and therefore the light emitting device 14 and the photodetector 15 moves from the point (a) to (b). The number of the parts 12a from the point (a) to (b) are detected and is converted to an angle which is displayed. Thereby, the workability and accuracy of the angle detection are improved and the device is simplified.
JP1767281A 1981-02-09 1981-02-09 Detector for angle of elevation of boom Pending JPS57132012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1767281A JPS57132012A (en) 1981-02-09 1981-02-09 Detector for angle of elevation of boom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1767281A JPS57132012A (en) 1981-02-09 1981-02-09 Detector for angle of elevation of boom

Publications (1)

Publication Number Publication Date
JPS57132012A true JPS57132012A (en) 1982-08-16

Family

ID=11950342

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1767281A Pending JPS57132012A (en) 1981-02-09 1981-02-09 Detector for angle of elevation of boom

Country Status (1)

Country Link
JP (1) JPS57132012A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0921093A2 (en) * 1997-12-05 1999-06-09 Grove U.S. LLC Luffing angle measurement system
CN112815877A (en) * 2021-01-06 2021-05-18 长春市春求科技开发有限公司 Five-axis equipment A-axis angular displacement measuring device and measuring calibration method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52134468A (en) * 1976-05-04 1977-11-10 Yamamoto Electric Ind Co Ltd Apparatus for measuring oblique angle
JPS54107767A (en) * 1978-02-13 1979-08-23 Dainippon Screen Mfg Incline angle measuring apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52134468A (en) * 1976-05-04 1977-11-10 Yamamoto Electric Ind Co Ltd Apparatus for measuring oblique angle
JPS54107767A (en) * 1978-02-13 1979-08-23 Dainippon Screen Mfg Incline angle measuring apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0921093A2 (en) * 1997-12-05 1999-06-09 Grove U.S. LLC Luffing angle measurement system
EP0921093A3 (en) * 1997-12-05 1999-06-16 Grove U.S. LLC Luffing angle measurement system
US6473715B1 (en) 1997-12-05 2002-10-29 Grove U.S. L.L.C. Luffing angle measurement system
CN112815877A (en) * 2021-01-06 2021-05-18 长春市春求科技开发有限公司 Five-axis equipment A-axis angular displacement measuring device and measuring calibration method
CN112815877B (en) * 2021-01-06 2021-08-17 长春市春求科技开发有限公司 Five-axis equipment A-axis angular displacement measuring device and measuring calibration method

Similar Documents

Publication Publication Date Title
JPS55156840A (en) Specimen detector
GB2013332A (en) Improvements in or relating to optical detecting arrangements
CA2159826A1 (en) Cross-aisle photo-detector for mobile storage system
JPS57132012A (en) Detector for angle of elevation of boom
JPS52152741A (en) Optical displacement detector
KR830005602A (en) Contact position sensing device
JPS5412488A (en) Method of detecting drum flange hole position
JPS52143882A (en) Vibration source position detection system
JPS5337457A (en) Distance measuring device
JPS57132007A (en) Detector for angles of elevation of boom
JPS56142411A (en) Device for detecting rotation angle
JPS57181434A (en) Position detector for head in disc storage device
JPS5343421A (en) Chinese character input device
JPS5498260A (en) Position indicator
JPS57200806A (en) Photoelectric displacement gage
JPS52104248A (en) Abnormality detection device of laser beam
JPS57132006A (en) Detector for angles of elevation of boom
JPS5669507A (en) Recessed and protruded parts detecting device
JPS52108881A (en) Sample detector
JPS6457105A (en) Optical mechanism for detecting displacement of displacement member in apparatus for inflammable gas
WO1979000436A1 (en) Optical coordinate input device
JPS55153043A (en) Coordinate position input system
JPS649516A (en) Optical plane inputting system
JPS5616232A (en) Keyboard of light emitting diode
JPS57101715A (en) Method and device for detecting relative distance