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GB909340A - Improvements in or relating to retarding devices - Google Patents

Improvements in or relating to retarding devices

Info

Publication number
GB909340A
GB909340A GB1602260A GB1602260A GB909340A GB 909340 A GB909340 A GB 909340A GB 1602260 A GB1602260 A GB 1602260A GB 1602260 A GB1602260 A GB 1602260A GB 909340 A GB909340 A GB 909340A
Authority
GB
United Kingdom
Prior art keywords
cam
drum
follower
driven
retarding
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
GB1602260A
Inventor
Peter Roy Smith
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB1602260A priority Critical patent/GB909340A/en
Publication of GB909340A publication Critical patent/GB909340A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/36—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains
    • B66D1/39—Guiding, or otherwise ensuring winding in an orderly manner, of ropes, cables, or chains by means of axially-movable drums or barrels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D2700/00—Capstans, winches or hoists
    • B66D2700/03—Mechanisms with latches or braking devices in general for capstans, hoists or similar devices as well as braking devices actuated electrically or by fluid under pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

909,340. Retarding devices. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. May 3, 1961 [May 5, 1960], No. 16022/60. Class 103 (1). [Also in Group XXX] A retarding device for a falling member comprises a cam driven by the member and a cam follower connected to a mechanical energy absorbing device. A device for lowering a weight 1, which may be a nuclear reactor control rod, comprises a helically-grooved drum 3 secured to a spindle 4 driven at one end by an electric motor 9 through a magnetic clutch 10, and being formed at the other end with an enlarged cylindrical portion 4a having one part of its cylindrical surface formed as a spiral cam surface 11b. The end of the portion 4a is internally threaded to receive an axially fixed screw member 8, the leads of the member 8, cam 11cand drum 3 being equal. A cam follower 12 is urged into engagement with the cam by a light spring and is connected by a lever 13 with an energy-absorbing device 14 which may be a liquid dashpot, an inertia flywheel or a friction disc. When the clutch 10 is released, the weight falls freely under gravity while the cam follower 12 rests on the cylindrical portion 4a; after a pre-determined free travel the follower rises on the cam to produce a deceleration characteristic dependent on the cam profile. In a modification the drum 3 is replaced by a rack-and-pinion mechanism.
GB1602260A 1960-05-05 1960-05-05 Improvements in or relating to retarding devices Expired GB909340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1602260A GB909340A (en) 1960-05-05 1960-05-05 Improvements in or relating to retarding devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1602260A GB909340A (en) 1960-05-05 1960-05-05 Improvements in or relating to retarding devices

Publications (1)

Publication Number Publication Date
GB909340A true GB909340A (en) 1962-10-31

Family

ID=10069756

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1602260A Expired GB909340A (en) 1960-05-05 1960-05-05 Improvements in or relating to retarding devices

Country Status (1)

Country Link
GB (1) GB909340A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3424871A3 (en) * 2017-07-05 2019-05-01 Hans Künz GmbH Winch assembly
CN114913998A (en) * 2022-05-12 2022-08-16 中国科学院上海应用物理研究所 Reactor control rod drive mechanism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3424871A3 (en) * 2017-07-05 2019-05-01 Hans Künz GmbH Winch assembly
EP3632836A1 (en) * 2017-07-05 2020-04-08 Hans Künz GmbH Crane with a winch assembly
US10913640B2 (en) 2017-07-05 2021-02-09 Hans Künz GmbH Cable winch arrangement
CN114913998A (en) * 2022-05-12 2022-08-16 中国科学院上海应用物理研究所 Reactor control rod drive mechanism
CN114913998B (en) * 2022-05-12 2025-11-04 中国科学院上海应用物理研究所 Reactor control rod drive mechanism

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