GB201207287D0 - Ratchet braking structure - Google Patents

Ratchet braking structure

Info

Publication number
GB201207287D0
GB201207287D0 GBGB1207287.2A GB201207287A GB201207287D0 GB 201207287 D0 GB201207287 D0 GB 201207287D0 GB 201207287 A GB201207287 A GB 201207287A GB 201207287 D0 GB201207287 D0 GB 201207287D0
Authority
GB
United Kingdom
Prior art keywords
ratchet wheel
pawl
engaging
ratchet
braking structure
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.)
Granted
Application number
GBGB1207287.2A
Other versions
GB2501515A (en
GB2501515B (en
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.)
WOO SING IND CO Ltd
Original Assignee
WOO SING IND CO 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 WOO SING IND CO Ltd filed Critical WOO SING IND CO Ltd
Priority to GB1207287.2A priority Critical patent/GB2501515B/en
Publication of GB201207287D0 publication Critical patent/GB201207287D0/en
Publication of GB2501515A publication Critical patent/GB2501515A/en
Application granted granted Critical
Publication of GB2501515B publication Critical patent/GB2501515B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D3/00—Portable or mobile lifting or hauling appliances
    • B66D3/12—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable
    • 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
    • B66D1/02—Driving gear
    • B66D1/04—Driving gear manually operated
    • B66D1/06—Safety cranks for preventing unwanted crank rotation and subsequent lowering of the loads
    • 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
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/24—Operating devices
    • 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
    • B66D5/32—Detent devices
    • 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
    • B66D5/32—Detent devices
    • B66D5/34—Detent devices having latches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/02—Freewheels or freewheel clutches disengaged by contact of a part of or on the freewheel or freewheel clutch with a stationarily-mounted member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F16D41/12—Freewheels or freewheel clutches with hinged pawl co-operating with teeth, cogs, or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Braking Arrangements (AREA)
  • Transmission Devices (AREA)

Abstract

A ratchet braking structure, that can resume its actuating position without a torsion spring, includes a ratchet wheel 10 and a pair of pawls 20 provided on opposite sides of the ratchet wheel 10. Each pawl 20 has a centre of rotation 21 and two opposing end portions 22, 23, wherein the two end portions are an engaging end 22 for engaging with and thereby locking the teeth 11 of the ratchet wheel 10 and a balancing end 23 for enabling pawl position restoration. The engaging end 22 of one pawl 20 is diagonally opposite that of the other. The balancing end 23 of each pawl extends from the side opposite the engaging end 22 and can be pushed outward by the teeth 11 of the ratchet wheel 10 so that, even without additional position restoration means, the engaging end 22 will stay where it can engage with the ratchet wheel 10.
GB1207287.2A 2012-04-26 2012-04-26 Ratchet braking structure Active GB2501515B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1207287.2A GB2501515B (en) 2012-04-26 2012-04-26 Ratchet braking structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1207287.2A GB2501515B (en) 2012-04-26 2012-04-26 Ratchet braking structure

Publications (3)

Publication Number Publication Date
GB201207287D0 true GB201207287D0 (en) 2012-06-06
GB2501515A GB2501515A (en) 2013-10-30
GB2501515B GB2501515B (en) 2018-08-29

Family

ID=46261877

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1207287.2A Active GB2501515B (en) 2012-04-26 2012-04-26 Ratchet braking structure

Country Status (1)

Country Link
GB (1) GB2501515B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105889443A (en) * 2015-01-20 2016-08-24 河南工业和信息化职业学院 Double-pawl mechanism

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3105333B1 (en) * 2019-12-23 2021-12-31 Fabrication Daccastillage Normand Transmission device, sail furling assembly comprising such a transmission device, and corresponding sailboat
GB2624486A (en) * 2023-04-24 2024-05-22 Tla Subsea Ltd Apparatus, system and method for tethering a subsea well assembly
GB2624264A (en) * 2023-04-24 2024-05-15 Tla Subsea Ltd Apparatus, system and method for tethering a subsea well assembly

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2440134B (en) * 2006-07-14 2011-04-20 Latchways Plc Speed responsive engagement device
GB2464277B (en) * 2008-10-07 2013-07-17 Latchways Plc Speed responsive engagement device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105889443A (en) * 2015-01-20 2016-08-24 河南工业和信息化职业学院 Double-pawl mechanism

Also Published As

Publication number Publication date
GB2501515A (en) 2013-10-30
GB2501515B (en) 2018-08-29

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