GB783963A - A device for the control and braking of hoisting devices - Google Patents

A device for the control and braking of hoisting devices

Info

Publication number
GB783963A
GB783963A GB765254A GB765254A GB783963A GB 783963 A GB783963 A GB 783963A GB 765254 A GB765254 A GB 765254A GB 765254 A GB765254 A GB 765254A GB 783963 A GB783963 A GB 783963A
Authority
GB
United Kingdom
Prior art keywords
brake
controlled
motor
magnetic powder
magnetic
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.)
Expired
Application number
GB765254A
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.)
ELMEG
Original Assignee
ELMEG
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
Priority to DE783963X priority Critical
Application filed by ELMEG filed Critical ELMEG
Publication of GB783963A publication Critical patent/GB783963A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66DCAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02Driving gear
    • B66D1/12Driving gear incorporating electric motors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66DCAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00Capstans, winches or hoists
    • B66D2700/01Winches, capstans or pivots
    • B66D2700/0125Motor operated winches
    • B66D2700/0141Electrically actuated

Abstract

783,963. Magnetic powder clutches. ELEKTRO - MECHANIK GES. March 16, 1954 [May 7, 1953], No. 7652/54. Class 78 (5). [Also in Group XXXV] Winch drum 13 is driven by motor 21 and braked by magnetic powder brake 23. The motor and brake are included with rectifiers 25, 26 in the electric circuit shown, the motor rotor circuit being controlled by variable resistances 22 and the brake circuit being controlled by variable resistance 24, and both resistances are controlled to minimize the heating in the magnetic brake 23. Alternatively, or additionally, a magnetic powder brake may be inserted between the motor 21 and winch 13 and be similarly controlled. Also, a magnetic powder clutch may have its external rotary member braked so that the powder clutch acts as a powder brake, and an emergency voltage source may be automatically switched in if the normal source fails. Specification 649,553, [Group XXXIV], is referred to.
GB765254A 1953-05-07 1954-03-16 A device for the control and braking of hoisting devices Expired GB783963A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE783963X 1953-05-07

Publications (1)

Publication Number Publication Date
GB783963A true GB783963A (en) 1957-10-02

Family

ID=6698428

Family Applications (1)

Application Number Title Priority Date Filing Date
GB765254A Expired GB783963A (en) 1953-05-07 1954-03-16 A device for the control and braking of hoisting devices

Country Status (1)

Country Link
GB (1) GB783963A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715643A (en) * 1970-03-31 1973-02-06 Yamato Sewing Machine Mfg Electrically driven motor
CN102442619A (en) * 2011-12-01 2012-05-09 中联重科股份有限公司 Steel wire rope pre-tightening device and tower crane with same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3715643A (en) * 1970-03-31 1973-02-06 Yamato Sewing Machine Mfg Electrically driven motor
CN102442619A (en) * 2011-12-01 2012-05-09 中联重科股份有限公司 Steel wire rope pre-tightening device and tower crane with same

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