CN2455692Y - Counter dual conic load limiter - Google Patents
Counter dual conic load limiter Download PDFInfo
- Publication number
- CN2455692Y CN2455692Y CN 01203443 CN01203443U CN2455692Y CN 2455692 Y CN2455692 Y CN 2455692Y CN 01203443 CN01203443 CN 01203443 CN 01203443 U CN01203443 U CN 01203443U CN 2455692 Y CN2455692 Y CN 2455692Y
- Authority
- CN
- China
- Prior art keywords
- nut
- ratchet wheel
- conical surface
- load
- reversing ratchet
- 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 load limiter used for a hand-drive block mechanism, composed of a brake nut (1), a reversing ratchet wheel (2), a roller (3), a taper gasket (4), a butterfly spring (5) and a locking nut (6). The utility model is characterized in that the outer circular loading surface of the brake nut (1) is orderly provided with the reversing ratchet wheel (2), the taper gasket (4) and the butterfly spring (5); the roller (3) is arranged in a circular arc slot of a bore of the reversing ratchet wheel (2); the locking nut (6) arranged on a screw rod of the brake nut (1) is connected with the butterfly spring (5); when the locking nut (6) is screwed, the butterfly spring (5) is deformed to generate axial pressure; a reverse conical surface composed of the taper gasket (4) and the reversing ratchet wheel (2) generates friction force; the conical surfaces of the reversing ratchet wheel (2) and the brake nut (1) generate friction force, namely double conical surface friction; when the weight of weights on a hoist is overloaded, the double conical surface generate double friction slippage, and the load of a manual hoist can be restricted; the utility model has the advantages of reliable load limitation, safety and simple structure and overcomes the defects that domestic similar products have no load limiter.
Description
The reverse double cone load limitation device of the utility model is used for the mechanism of manual hoist crane limit for tonnage.
At present, the manual hoist crane of domestic production is the device of unrestricted load, it is plane contact by stop-off nut, commutation ratchet, plain cushion, jam nut between mutually, no limit for tonnage effect, when the lifting object surpasses specified value, suspension hook in the hoist crane, the load part of revoking and so on are easily curved disconnected, often damage for the equipment and the person.
At above-mentioned existing problems, the utility model provides a kind of reverse double cone load limitation device of being made up of conical surface stop-off nut, commutation ratchet, awl pad, belleville spring.The reverse double cone load limitation device of the utility model has: stop-off nut (1), commutation ratchet (2), roller (3), awl pad (4), belleville spring (5), jam nut (6) are formed, its technical characterictic is for being equipped with commutation ratchet (2), awl pad (4), belleville spring (5) successively on stop-off nut (1) outer conical surface, be placed with roller (3) in commutation ratchet (2) the endoporus arc groove, jam nut (6) be housed on the screw rod of stop-off nut (1) join with belleville spring (5).When jam nut (6) when screwing, force belleville spring (5) distortion, produce axle pressure, awl pad (4) produces friction force with commutation ratchet (2) circular conical surface, and commutation ratchet (2) produces friction force with stop-off nut (1) circular conical surface, when the lifting weight of object overloads, the circular conical surface friction slip of stop-off nut (1) and commutation ratchet (2), the ratchet (2) that commutates again fills up the circular conical surface friction slip of (4) with awl, skids because the double cone friction face produces, and load is limited.
The utility model advantage is: (one) is because two circular conical surface frictions, under this dual cone face rubbing effect, when the lifting weight of object surpasses specified value, stop-off nut in this load limitation device (1) can skid with the circular cone friction face of commutation ratchet (2), the ratchet (2) that commutates again skids with the circular cone friction face that awl fills up (4), load is limited, and whole manually the hoist crane limit for tonnage is reliable and secure.(2) simple in structure, the assembling easy to adjust, can remedy the blank that domestic like product does not have the limit for tonnage device.
Fig. 1 is the reverse double cone load limitation device of a utility model structural representation.(1) stop-off nut, (2) commutation ratchet, (3) roller, (4) awl pad, (5) belleville spring, (6) jam nut among Fig. 1
The utility model implementation process is described further: inner cone commutation ratchet (2) left is housed on stop-off nut (1) outer conical surface, form an oppositely circle section, put into roller (3) in commutation ratchet (2) arc groove, the conical surface awl pad (4) left of packing into successively on commutation ratchet (2) right side reaches big end belleville spring (5) left, screws in jam nut (6) and join with belleville spring (5) on stop-off nut (1) screw rod.When jam nut (6) when screwing, force belleville spring (5) elastic deformation, thereby produce axle pressure, awl pad (4) produces friction force with commutation ratchet (2) circular conical surface; Commutate again ratchet (2) and stop-off nut (1) circular conical surface produces friction force, produced the limit for tonnage effect by the double rub of two circular conical surfaces.Form overriding clutch by roller (3) and commutation ratchet (2) and stop-off nut (1), this load limitation device just has the unidirectional rotation function.The reverse double cone load limitation device of the utility model and the manual hoist crane sprocket shaft parts stop-off nut (1) of packing into, start commutation ratchet (2), just can promote weight, when weight overloads, moving nut (1) in this load limitation device and the reverse circular conical surface friction slip that commutation ratchet (2) constitutes, commutate again ratchet (2) and the circular conical surface friction slip of boring pad (4) are because two circular conical surface double rub are skidded, manually hoist crane load obtains restriction, and whole cucurbit is safe and reliable.
Claims (1)
- A kind of load limitation device that is used for bottle gouard moved by hands mechanism, mainly form by stop-off nut (1), commutation ratchet (2), jam nut (6), it is characterized in that being equipped with successively on stop-off nut (1) the cylindrical section commutation ratchet (2), awl pad (4), belleville spring (5), be placed with roller (3) in commutation ratchet (2) the endoporus arc groove, jam nut (6) is housed on the screw rod of stop-off nut (1) joins, constitute the load limitation device of the moving hoist crane of an assistant with belleville spring (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01203443 CN2455692Y (en) | 2001-01-02 | 2001-01-02 | Counter dual conic load limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01203443 CN2455692Y (en) | 2001-01-02 | 2001-01-02 | Counter dual conic load limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2455692Y true CN2455692Y (en) | 2001-10-24 |
Family
ID=33624922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01203443 Expired - Fee Related CN2455692Y (en) | 2001-01-02 | 2001-01-02 | Counter dual conic load limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2455692Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105014286A (en) * | 2015-08-13 | 2015-11-04 | 上海诺霸科技有限公司 | Pull rod |
| CN110027997A (en) * | 2019-03-28 | 2019-07-19 | 浙江双鸟机械有限公司 | The method that integral combined wrench group method and the spanner are assemblied in Lever Blocks |
-
2001
- 2001-01-02 CN CN 01203443 patent/CN2455692Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105014286A (en) * | 2015-08-13 | 2015-11-04 | 上海诺霸科技有限公司 | Pull rod |
| CN110027997A (en) * | 2019-03-28 | 2019-07-19 | 浙江双鸟机械有限公司 | The method that integral combined wrench group method and the spanner are assemblied in Lever Blocks |
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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 |