GB201207287D0 - Ratchet braking structure - Google Patents
Ratchet braking structureInfo
- 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
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.
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)
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)
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)
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 |
-
2012
- 2012-04-26 GB GB1207287.2A patent/GB2501515B/en active Active
Cited By (1)
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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