CN200995007Y - High-sensitivity speed-differential safety hook - Google Patents
High-sensitivity speed-differential safety hook Download PDFInfo
- Publication number
- CN200995007Y CN200995007Y CN 200620047602 CN200620047602U CN200995007Y CN 200995007 Y CN200995007 Y CN 200995007Y CN 200620047602 CN200620047602 CN 200620047602 CN 200620047602 U CN200620047602 U CN 200620047602U CN 200995007 Y CN200995007 Y CN 200995007Y
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- CN
- China
- Prior art keywords
- ratchet
- fixed
- runner
- pawl
- central shaft
- 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 - Fee Related
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Abstract
The utility model relates to a high sensitive differential speed catching device, which comprises a rotating wheel, a central axle, a disk collecting spiral spring, a pawl and a little spring. The pawl is fixed on the side surface of the rotating wheel after covered on a pawl wheel, one end of the little spring is fixed on the rotating wheel, the other end is fixed on one end near the tip of the pawl. The utility model is characterized in that a magnetic body matching the central axle is fixed and arranged at the tail end near the central axle of the pawl.
Description
Technical field
The utility model relates to a kind of labor protection device, relates in particular to a kind of anti-fall device of work high above the ground.
Background technology
Along with the development of building industry, skyscraper is more and more, and the appearance of various work high above the ground, and the high-altitude protection has seemed more and more important.The equipment of anti-fall aspect, high-altitude also occurs a lot, how can be in the very first time reacts to falling and is not damaged to the personnel that fall and want a problem becoming better and approaching perfection day by day in the industry.
A kind of waistband speed difference catching device is disclosed in Chinese patent ZL99239265.9, mainly form by link stopper, little spring, last lower casing, suspension ring and overcoat, ratchet, guide cylinder, dish going barrel, runner, central shaft and recovering tray clockwork spring, after ratchet is placed on the pawl axis, be fixed on the face of runner, little spring one end lies on the runner, and the other end is held the ratchet point and is lower than link stopper.This utility model has been utilized centrifugal principle dexterously, during use safety belt is tied up on the waist, and the safety door hook on the safety cable is hooked on the fixture, the people can freely move, safety cable is because the effect of recovering tray clockwork spring, be in the hemicompact state with human body, safety cable can freely be emitted, be regained.When in case falling accident takes place, normal translational speed when the speed that safety cable is drawn out will be greater than usual work, runner is also followed fast rotational, driving the ratchet that is installed on runner face fast rotational together, the centrifugal force of generation will be greater than the constraint of little spring to the ratchet point, and the ratchet point lifts rapidly, spacing and make the ratchet tip head into link stopper contract mouth just because the ratchet tail end touches mutually with central shaft again, stop the rotation of ratchet and runner, thereby make safety cable stop to emit, make human body stop to fall.
But find that in practice the safety rope that ties up on one's body also is an elastomer because the people who is protected is an elastomer.They are subjected to brake (when block is run at the ratchet tip) can be subjected to the impact force action greater than body weight for humans, and makes safety rope produce the elastic elongation buffering, load weightlessness in an instant time the on the safety rope when being elongated to the limit and producing elastical retraction.Disk is reclaiming under the clockwork spring effect, angle of counter-rotation, cause the tip of ratchet to break away from the contract mouth of block and under the effect of little spring, be returned to the original closely position of central shaft, disk can continue to rotate forward then, this has just caused brake failure and the beginning action of brake for the second time, strengthen braking distance, caused the hidden danger of fortuitous casualty.
Summary of the invention
Technical problem to be solved in the utility model is will provide a kind of ratchet can not reclaim at the brake buffer stage to reset, thereby guarantees that brake can not make the short more a kind of highly sensitive speed difference catching device of tenesmus distance by short duration failure.
For solving the problems of the technologies described above, highly sensitive speed difference catching device of the present utility model, include runner central shaft, closing quotation clockwork spring, ratchet, little spring, after ratchet is placed on the pawl axis, be fixed on the side of runner, little spring one end is fixed on the runner, and the other end is fixed in the nearly most advanced and sophisticated side of ratchet, is set with a magnetic matchingly in nearly central shaft one side of ratchet tail end and central shaft.
Adopted the highly sensitive speed difference catching device of said structure, central shaft adopts ferrous material, in use as prominent chance human body fall, safety belt is pulled out rapidly, runner quickens to stick up outside the rotation drive ratchet tip and heads into block contract mouth, ratchet tail end (magnetic) touches mutually with central shaft, simultaneously because the elasticity of huge impact power and safety belt causes the safety belt resilience, runner temporarily loses the external broach square, short distance reverse rotation under the effect of reclaiming clockwork spring, the most advanced and sophisticated block contract mouth that breaks away from of ratchet, but because the suction of magnetic, the ratchet tail end is inhaled mutually with central shaft all the time, just can not be returned to the position of nearly central axis behind the most advanced and sophisticated disengaging of the ratchet block contract mouth because of the pulling force of little spring, thereby guaranteed that braking effect is stable, further shortened braking distance, improved security performance.
Description of drawings
Fig. 1 is the structural representation of the highly sensitive speed difference of the utility model catching device;
Among the figure: 1. ratchet 2. central shafts 3. magnetic beads
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and exemplary embodiments.
Fig. 1 shows highly sensitive speed difference catching device of the present utility model, comprise runner, central shaft 2, closing quotation clockwork spring, ratchet 1, little spring, after ratchet 1 is placed on the pawl axis, be fixed on the side of runner, little spring one end is fixed on the runner, the other end is fixed in the nearly most advanced and sophisticated side of ratchet, embeds a magnetic beads 3 at ratchet 1 tail end and central shaft 2 contact point places.Magnetic beads 3 can hold central shaft 2, make ratchet 1 most advanced and sophisticated maintenance lift up upright state when barrier effect had been lifted up at ratchet 1 tip.
Claims (1)
1. a highly sensitive speed differs from catching device, include runner, central shaft, closing quotation clockwork spring, ratchet, little spring, after ratchet is placed on the pawl axis, be fixed on the side of runner, little spring one end is fixed on the runner, the other end is fixed in the nearly most advanced and sophisticated side of ratchet, it is characterized in that: be set with a magnetic matchingly in nearly central shaft one side of ratchet tail end and central shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620047602 CN200995007Y (en) | 2006-11-08 | 2006-11-08 | High-sensitivity speed-differential safety hook |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620047602 CN200995007Y (en) | 2006-11-08 | 2006-11-08 | High-sensitivity speed-differential safety hook |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200995007Y true CN200995007Y (en) | 2007-12-26 |
Family
ID=38993424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620047602 Expired - Fee Related CN200995007Y (en) | 2006-11-08 | 2006-11-08 | High-sensitivity speed-differential safety hook |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200995007Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102215915A (en) * | 2009-03-09 | 2011-10-12 | Db工业股份有限公司 | Safety device with fall arrest and descending modes |
| WO2013004105A1 (en) * | 2011-07-06 | 2013-01-10 | 浙江华电器材检测研究所 | Self-locking reliability testing machine for speed difference falling preventing device |
| WO2020151715A1 (en) * | 2019-01-22 | 2020-07-30 | 金华捷科工具有限公司 | Buffer type retractable fall arrester |
| WO2020151713A1 (en) * | 2019-01-22 | 2020-07-30 | 金华捷科工具有限公司 | Fall-proofing safety device |
| CN111956966A (en) * | 2020-08-20 | 2020-11-20 | 杭州合泰安防科技有限公司 | Falling protector convenient to use |
-
2006
- 2006-11-08 CN CN 200620047602 patent/CN200995007Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102215915A (en) * | 2009-03-09 | 2011-10-12 | Db工业股份有限公司 | Safety device with fall arrest and descending modes |
| CN102215915B (en) * | 2009-03-09 | 2013-11-06 | 迪比工业有限责任公司 | Safety device with fall arrest and descending modes |
| WO2013004105A1 (en) * | 2011-07-06 | 2013-01-10 | 浙江华电器材检测研究所 | Self-locking reliability testing machine for speed difference falling preventing device |
| WO2020151715A1 (en) * | 2019-01-22 | 2020-07-30 | 金华捷科工具有限公司 | Buffer type retractable fall arrester |
| WO2020151713A1 (en) * | 2019-01-22 | 2020-07-30 | 金华捷科工具有限公司 | Fall-proofing safety device |
| CN111956966A (en) * | 2020-08-20 | 2020-11-20 | 杭州合泰安防科技有限公司 | Falling protector convenient to use |
| CN111956966B (en) * | 2020-08-20 | 2021-10-15 | 杭州合泰安防科技有限公司 | Falling protector convenient to use |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |