CN2308589Y - Hand pulling block - Google Patents
Hand pulling block Download PDFInfo
- Publication number
- CN2308589Y CN2308589Y CN 97224833 CN97224833U CN2308589Y CN 2308589 Y CN2308589 Y CN 2308589Y CN 97224833 CN97224833 CN 97224833 CN 97224833 U CN97224833 U CN 97224833U CN 2308589 Y CN2308589 Y CN 2308589Y
- Authority
- CN
- China
- Prior art keywords
- wheel
- sprocket
- chain wheel
- traction body
- chain
- 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
Links
- 238000004804 winding Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The utility model relates to a manual lifting tool, especially small-tonnage chain block. The technical scheme is that the chain wheel comprises a large chain wheel (2), a small chain wheel (3), a zipper (8), a rotating shaft (6), a braking mechanism and a traction body (9), wherein the large chain wheel and the small chain wheel are arranged on the rotating shaft, one chain wheel is fixedly connected with the rotating shaft, the other chain wheel is spirally. Adopt the utility model discloses, when the manpower pulling zip fastener, big sprocket are the action wheel, the heavy object on the traction body rises, and the heavy object descends when little sprocket is the action wheel. Because the two chain wheels are adopted to rotate in a matching way to form a differential compensation mechanism, the hoisting efficiency is improved by utilizing differential force increasing, and the device has the characteristics of reasonable structure, convenient operation and use, low cost, labor saving, high efficiency and the like.
Description
The utility model relates to a kind of manual lifting gear, particularly little tonnage chain block
Existing chain block generally is made of sprocket wheel, slide fastener, S. A., transmission gear, stop mechanism, traction body, sprocket wheel is fixed on the S. A., stop mechanism, transmission gear are placed on the S. A., manpower pulling slide fastener, the sprocket wheel rotation, by transmission gear traction body is moved up or down, the weight that hangs on the traction body is promoted or puts down, the weight that known stop mechanism (as ratchet, detent mechanism) will be mentioned is fixed in the air.This class chain block is when little tonnage hoisting operation, and lifting velocity is slow, and efficient is low, and its structure is more complicated also, manufacturing cost height, maintenance difficult.
The utility model purpose provides a kind of chain block, increases work efficiency, and simplified structure, cost-cutting solves the problems referred to above that prior art exists.
Goal of the invention of the present utility model is achieved by the following technical solution: be made of size two sprocket wheels, slide fastener, S. A., stop mechanism, traction bodies, two sprocket wheels of size place on the S. A., one of them sprocket wheel is captiveed joint with S. A., another sprocket wheel is connected with the S. A. spiral, slide fastener is a ring-type, be wrapped in successively on hinge wheel, traction body, the minor sprocket, the winding direction on two sprocket wheels of size is opposite.
Adopt the utility model, spur slide fastener with manpower, when hinge wheel was driving wheel, the weight on the traction body rose, and weight descended when minor sprocket was driving wheel, when manpower stops drag slide fastener, and the two-wheel switched in opposite, S. A. is motionless, realizes braking.Owing to adopt two sprocket wheel couplings to rotate, constitute a differential compensation mechanism, utilize the differential reinforcement, improve lifting efficient.
The utlity model has rational in infrastructure, easy for operation, cost is low, laborsaving characteristics such as efficient.Be specially adapted to little tonnage hoisting operation.
Accompanying drawing 1 is the structural representation of the utility model embodiment.
Accompanying drawing 2 is a schematic diagram of the present utility model.
Below in conjunction with accompanying drawing, further specify the utility model by embodiment.
In an embodiment, the utility model is by fixed mount (1), hinge wheel (2), minor sprocket (3), brake plate (4,5), S. A. (6), shell (7), slide fastener (8), traction body (9) constitutes, two sprocket wheels of size place on the S. A., hinge wheel (2) is captiveed joint with S. A. (6), minor sprocket (3) is connected with S. A. (6) spiral, slide fastener (8) is a ring-type, be wrapped in hinge wheel successively, traction body (9), on the minor sprocket, winding direction on two sprocket wheels of size is opposite, stop mechanism comprises fixed mount (1), friction brake wafer (4,5), be placed between the big minor sprocket, fixed mount (1) is captiveed joint with shell (7), and friction brake wafer places the fixed mount both sides.When weight rises, the ring-type slide fastener (diagram conter clockwise change) of F pulling on the hinge wheel firmly, the S. A. conter clockwise changes, S. A. and minor sprocket commentaries on classics are unclamped, brake plate also unclamps, minor sprocket rotates counterclockwise with hinge wheel under the weight effect on the traction body, because radius R 1, the R2 difference of large and small sprocket wheel have realized the differential reinforcement.When stopping moving slide fastener, when tensile force f was zero, the rotation of two sprocket wheel by gravity opposite senses compressed friction brake wafer and fixed mount, realizes braking, and the weight of mentioning can rest in the air.When the needs weight descends, the slide fastener (diagram cw change) of F pulling on the minor sprocket firmly, the S. A. cw changes, and this moment, friction brake wafer unclamped, and S. A. rotates with hinge wheel, and weight descends.
Claims (3)
1, a kind of chain block, comprise sprocket wheel, slide fastener (8), S. A. (6), stop mechanism, traction body (9) in the composition, comprise hinge wheel (2) and minor sprocket (3) in it is characterized in that forming, two sprocket wheels of size place on the S. A., one of them sprocket wheel is captiveed joint with S. A., and another sprocket wheel is connected with the S. A. spiral, and slide fastener is a ring-type, be wrapped in successively on hinge wheel, traction body, the minor sprocket, the winding direction on two sprocket wheels of size is opposite.
2, the chain block according to claim 1, it is characterized in that said stop mechanism comprises fixed mount (1), friction brake wafer (4,5), on the S. A. (6) between arrangement and the big minor sprocket, fixed mount (1) is captiveed joint with shell (7), and friction brake wafer places the fixed mount both sides.
3, according to claim 1 or 2 described a kind of chain blocks, it is characterized in that said hinge wheel (2) captives joint with S. A. (6), minor sprocket (3) is connected with S. A. (6) spiral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224833 CN2308589Y (en) | 1997-08-25 | 1997-08-25 | Hand pulling block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224833 CN2308589Y (en) | 1997-08-25 | 1997-08-25 | Hand pulling block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2308589Y true CN2308589Y (en) | 1999-02-24 |
Family
ID=33939047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97224833 Expired - Fee Related CN2308589Y (en) | 1997-08-25 | 1997-08-25 | Hand pulling block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2308589Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015027424A1 (en) * | 2013-08-29 | 2015-03-05 | Gao Zehang | Lifting device and chain block comprising same |
| CN104555847A (en) * | 2013-10-25 | 2015-04-29 | 龙昱 | Suspension-seesaw artificial gravity lifting machine |
-
1997
- 1997-08-25 CN CN 97224833 patent/CN2308589Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015027424A1 (en) * | 2013-08-29 | 2015-03-05 | Gao Zehang | Lifting device and chain block comprising same |
| CN104555847A (en) * | 2013-10-25 | 2015-04-29 | 龙昱 | Suspension-seesaw artificial gravity lifting machine |
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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 |