CN1258048C - Ratchet brake - Google Patents
Ratchet brake Download PDFInfo
- Publication number
- CN1258048C CN1258048C CN 01126855 CN01126855A CN1258048C CN 1258048 C CN1258048 C CN 1258048C CN 01126855 CN01126855 CN 01126855 CN 01126855 A CN01126855 A CN 01126855A CN 1258048 C CN1258048 C CN 1258048C
- Authority
- CN
- China
- Prior art keywords
- ratchet
- driving wheel
- brake
- driven shaft
- present
- 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 - Lifetime
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Abstract
The present invention relates to a ratchet wheel brake which is a braking device. The major structure of the present invention has two pairs pf ratchet wheel and ratchet pawl braking devices which clamp driving wheels; the ratchet wheels and the driving wheel are engaged and disengaged through friction plates; the driving wheel drives a driven shaft through threads. When the driven shaft always has the movement tendency in one direction, the driving wheel can move along an axial direction and press the ratchet wheels to rotate in the same direction; then, the ratchet pawls prevent the movement tendency to achieve the purpose of brake. The ratchet wheels and the driving wheel are combined step by step through the friction plates, and the operation is stable. The driving wheel can automatically move along the axial direction, and the abrasion of the friction plate does not need to be compensated. The present invention is suitable for places such as hoisting machinery, unidirectional transportation machinery, etc. preventing the fall of weight or the reversion of drive components.
Description
Technical field
The present invention relates to a kind of ratchet brake, is a kind of braking device, belongs to mechanical field, is applicable to that lifting machinery, irreversible conveyer tool etc. prevent the place that weight falls or transmission part reverses.
Background technique
In engineering construction and activity in production, for example in the weight lifting process, weight falls to having an accident rapidly when preventing power source or transmission part catastrophic failure, needs to install a braking device, Braking mode locking when requirement is fallen at weight, and break away from voluntarily when beginning to lift by crane.Also there is this requirement in place preventing that transmission from reversing.Traditional shoe brake, band brake, shoe brake etc., complex structure, noise is bigger, needs additional independent control source that brake power is provided.This is a urgent problem in this field.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of ratchet brake, and weight falls rapidly and has an accident in the time of can preventing power source or transmission part catastrophic failure, and simple in structure, and noise is little.
For solving the problems of the technologies described above, ratchet brake of the present invention comprises ratchet, ratchet, driving wheel, driven shaft, axle sleeve, friction plate, pulls out axle, and ratchet is axis with the pawl axis, fits constantly with ratchet under the effect of torsion spring; When temporarily not needing to brake, the rotatable axle that pulls out makes ratchet break away from ratchet, but backward rotation resets when needing; Driving wheel trace vertically moves, and the pressing friction sheet also drives ratchet.
As a kind of optimal technical scheme, ratchet brake of the present invention, driving wheel connects by multi-thread steep-pitch thread with driven shaft, and axially trace moves.
Ratchet brake of the present invention, agent structure are that two secondary ratchets and using pawl to brake device clamp driving wheel, by friction plate clutch, pass through the screw thread transmission between driving wheel and driven shaft between ratchet and driving wheel.When driven shaft always had the movement tendency (as the gravity of lifting thing, intermittent movement, or oppositely reverse) of a direction, driving wheel can move vertically, and compressed ratchet and rotate in the same way, and this moment, ratchet stoped this movement tendency, reached the skidding purpose.Progressively combine by friction plate between ratchet and driving wheel, it is very steady to work.Driving wheel can move automatically vertically, and the wearing and tearing of friction plate need not compensation.Therefore ratchet brake of the present invention simple in structure than the conventional brake device, automatic brake, it is very steady to work.As required, two secondary ratchets and ratchet transposition, or the thread rotary orientation between change driving wheel and driven shaft just can obtain braking and open often or normally closed two states.
Description of drawings
Can clearer understanding technology contents of the present invention and purpose effect with reference to accompanying drawing.
Fig. 1 is a ratchet brake sectional view of the present invention;
Fig. 2 is a ratchet brake work schematic representation of the present invention.
Symbol description is as follows among the figure:
1, ratchet
2, driving wheel
3, driven shaft
4, axle sleeve
5, friction plate
6, ratchet
7, torsion spring
8, pawl axis
9, pull out axle
Embodiment
As depicted in figs. 1 and 2, the main actuator of ratchet brake of the present invention is ratchet 1 and ratchet 6.Ratchet 6 is an axis with pawl axis 8, fits constantly with ratchet 1 under the effect of torsion spring 7, and is accurately rapid when guaranteeing braking.When temporarily not using ratchet brake, the rotatable 9 o'clock ratchets 6 of axle that pull out break away from ratchet 1; But backward rotation resets when needing.
The major control part of ratchet brake of the present invention is driving wheel 2 and driven shaft 3.Driving wheel 2 connects by multi-thread steep-pitch thread with driven shaft 3, and trace moves vertically, and pressing friction sheet 5 also drives ratchet 1.
When proper functioning, during promptly by driving wheel 2 input power, driving wheel 2 compresses rotating ratchet side in the same way, separates with the reverse rotation ratchet, and ratchet is not braked this moment; When driving wheel 2 unpowered inputs, when driven shaft 3 rotated under the effect of gravity or reverse power round about, driving wheel 2 compressed the reverse rotation ratchet, and ratchet is braked at this moment.
In sum, this ratchet brake is simple in structure, Braking mode, stable working.After two secondary click transpositions, can obtain another kind of braking direction, flexible and changeable.
Claims (2)
1, a kind of ratchet brake, by ratchet (1), ratchet (6), driving wheel (2), driven shaft (3), axle sleeve (4), friction plate (5), pull out axle (9) etc. and form, it is characterized in that: ratchet (6) is an axis with pawl axis (8), fits constantly with ratchet (1) under the effect of torsion spring (7); When temporarily not needing to brake, the rotatable axle (9) that pulls out makes ratchet (6) break away from ratchet (1), but backward rotation resets when needing; Driving wheel (2) trace vertically moves, and pressing friction sheet (5) also drives ratchet (1).
2, ratchet brake as claimed in claim 1 is characterized in that: driving wheel (2) connects by multi-thread steep-pitch thread with driven shaft (3), and axially trace moves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01126855 CN1258048C (en) | 2001-09-25 | 2001-09-25 | Ratchet brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01126855 CN1258048C (en) | 2001-09-25 | 2001-09-25 | Ratchet brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1409026A CN1409026A (en) | 2003-04-09 |
| CN1258048C true CN1258048C (en) | 2006-05-31 |
Family
ID=4666859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01126855 Expired - Lifetime CN1258048C (en) | 2001-09-25 | 2001-09-25 | Ratchet brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1258048C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865222B (en) * | 2010-06-14 | 2013-07-10 | 太重煤机有限公司 | Coaxial friction ratchet wheel brake with limiting device |
| CN107522126A (en) * | 2017-10-11 | 2017-12-29 | 长治市潞安合力机械有限责任公司 | A kind of ramp is with pulling monorail crane dolly |
| CN108468732A (en) * | 2018-06-11 | 2018-08-31 | 漳州市龙文区上野技术开发服务部 | A kind of anti-fall brake disc of door roller and brake base |
-
2001
- 2001-09-25 CN CN 01126855 patent/CN1258048C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1409026A (en) | 2003-04-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Tak Road 201802 Shanghai city Jiading District Nanxiang Town, No. 815 Patentee after: Shanghai Guanlong Valve Machinery Co., Ltd Address before: Tak Road 201802 Shanghai city Jiading District Nanxiang Town, No. 815 Patentee before: HARTMAN, BRIAN T. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Tak Road 201802 Shanghai city Jiading District Nanxiang Town, No. 815 Patentee after: Shanghai Guanlong valve energy saving equipment Co., Ltd Address before: Tak Road 201802 Shanghai city Jiading District Nanxiang Town, No. 815 Patentee before: Shanghai Guanlong Valve Machinery Co., Ltd |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20060531 |