CN201882848U - Mechanical brake - Google Patents
Mechanical brake Download PDFInfo
- Publication number
- CN201882848U CN201882848U CN2010206070058U CN201020607005U CN201882848U CN 201882848 U CN201882848 U CN 201882848U CN 2010206070058 U CN2010206070058 U CN 2010206070058U CN 201020607005 U CN201020607005 U CN 201020607005U CN 201882848 U CN201882848 U CN 201882848U
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- ratchet
- press plate
- platen
- mechanical brake
- 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 mechanical brake, which is characterized by comprising a movable press plate, a fixed press plate, a ratchet wheel, a pawl and a rotary shaft. The fixed press plate is mounted on the rotary shaft, the ratchet wheel is movably sleeved on the rotary shaft, the movable press plate is connected with the rotary shaft by a threaded pair, the ratchet wheel is connected with the pawl and positioned between the fixed press plate and the movable press plate, and a key groove is arranged on the outer circumferential surface of the movable press plate. The mechanical brake can effectively function in braking, is generally used as a secondary brake protection device for mechanical equipment such as cranes and the like, can effectively eliminate potential safety hazards, and reduces unnecessary economical property loss for enterprises.
Description
Technical field
The utility model belongs to the mechanical brake technical field, particularly relates to a kind of mechanical brake that is applicable to electric block.
Background technology
At present, hoisting crane has become requisite mechanical equipment in various workshops or the warehouse factory building.Electric block is a kind of as hoisting crane, because of have volume little, from heavy and light, characteristics such as simple to operate and easy to use, be widely used in places such as industrial and mining enterprises, storage harbour.There are multiple reasons such as flaw and problem of materials in the safety problem of the lifting mechanism most important thing that to be the designer need at the beginning of design always considers, hoisting crane owing to user's improper use, in producing in use, and the hoisting crane et out of order is inevitable.In all multiple faultss that hoisting crane may occur, the brake troubles of hoisting crane is the most fatal, it can serious threat arrive user's life safety, and can give and use producer to cause unnecessary property damage, general ratchet brake equipment, rising and falling of many employing magnet control ratchets is easy to generate fault, and can't work under the situation of outage.Therefore it is imperative suddenly to wait to develop a kind of mechanical type brake protection device simple in structure.
Summary of the invention
The utility model provides a kind of simple in structure, mechanical brake that can play the braking protection to the cucurbit hoisting crane of et out of order for solving the technical matters that exists in the known technology.
The technical scheme that the utility model is taked for the technical matters that exists in the solution known technology is: a kind of mechanical brake, it is characterized in that: comprise moveable platen, fixed platen, ratchet, ratchet and rotating shaft, described fixed platen is installed in the rotating shaft, described ratchet movable set is in rotating shaft, described moveable platen is connected with rotating shaft by screw thread pair, described ratchet connects ratchet, described ratchet is between fixed platen and moveable platen, and the outer circumference surface of described moveable platen is provided with keyway.
The utility model can also adopt following technical scheme:
Described fixed platen is fixedly set in the described rotating shaft.
Coupling end with described moveable platen in the described rotating shaft is provided with spacing shoulder.
The outer circumference surface of described moveable platen is provided with spline.
Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme, promptly comprise rotating shaft, fixed platen and moveable platen are installed in described rotating shaft, be provided with the ratchet with the rotating shaft movable set between described fixed platen and moveable platen, described ratchet connects ratchet.This novel two stage braking device that generally can be used as hoisting crane uses.Under the situation of the drive motor et out of order of hoisting crane and one-level misfunctioning of brake, hoisting heavy falls naturally and drives reel and quickens to rotate, at this moment, this novel described mechanical brake begins to work, can effectively prevent weight to fall to injuring the user of service, eliminate safe hidden trouble, and reduce the loss of unnecessary economic asset for enterprise.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, rotating shaft; 1-1, spacing shoulder; 2, moveable platen; 3, ratchet; 4, fixed platen; 5, ratchet; 6, bearing; 7, reel; 8, cucurbit shell.
The specific embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 1, a kind of mechanical brake comprises rotating shaft 1, and fixed platen 4, moveable platen 2 and ratchet 3 are installed in the described rotating shaft 1.Described fixed platen 4 is fixedly set in the rotating shaft 1, described moveable platen 2 and rotating shaft 1 are connected by screw thread pair, moveable platen 2 can be movable vertically in rotating shaft 1 by worm drive, and described ratchet 3 movable sets are in rotating shaft 1, and ratchet 3 is between fixed platen 4 and moveable platen 2.Described ratchet 3 connects ratchets 5, and the outer circumference surface of described moveable platen 2 is provided with spline, is provided with spacing shoulder 1-1 on an end of the installation moveable platen 2 of described rotating shaft 1.
To be used for electric hoist crane is example, and this later-model mounting structure and principle of work are:
Mounting structure is: the moveable platen 2 that is provided with spline is connected with female splines on the reel 7 of electric block, and reel 7 rotates and can drive moveable platen 2 and rotate, and moveable platen 2 can be movable vertically in described rotating shaft 1.On the cucurbit shell 8 of electric block, locate on cucurbit shell 8 and can rotate by rotating shaft 1 by bearing installation for an end that is provided with fixed platen 4 of described rotating shaft 1.Be fixed on the cucurbit shell 8 with described ratchet 3 bonded assembly ratchets 5.
Principle of work is: electric block lifts normally that weight hoists lentamente and when descending, reel 7 can drive moveable platen 2 and rotate, worm drive meeting between moveable platen 2 and the rotating shaft 1 produces locking phenomenon, moveable platen 2 can not moved to ratchet 3 directions along rotating shaft 1, thereby 7 on the reel that makes electric block drives rotating shaft 1 and rotates, at this moment, this brake equipment is inoperative.When the drive motor of electric block and drg et out of order; the weight free fall apace of being lifted by crane; can not satisfy the condition of self-locking (condition of self-locking of worm drive is set according to the environment for use of device by the designer between described moveable platen 2 and the rotating shaft 1) of worm drive; moveable platen 2 can be moved to fixed platen 4 directions by the axis of worm drive along rotating shaft 1; finally; described moveable platen 2 can be pressed on ratchet 3 between moveable platen 2 and the fixed platen 4; the ratchet 5 that is connected with ratchet 3 and is fixed on the cucurbit shell 8 can prevent ratchets 3 to rotate; thereby the braking by the realization of the friction force between moveable platen 2 and the ratchet 3 reel 7 realizes the braking protective effect of this device with this.Compare with the like product of other producers, the utility model patent does not rely on any electric apparatus and software or microprocessor, can select braking time according to design calculation.
This novel described brake protection device only is not applicable to above-mentioned electric hoist crane, also is equally applicable to the hoisting crane of other structure, manually or automatic lifting device etc.
Claims (4)
1. mechanical brake, it is characterized in that: comprise moveable platen, fixed platen, ratchet, ratchet and rotating shaft, described fixed platen is installed in the rotating shaft, described ratchet movable set is in rotating shaft, described moveable platen is connected with rotating shaft by screw thread pair, described ratchet connects ratchet, and described ratchet is between fixed platen and moveable platen, and the outer circumference surface of described moveable platen is provided with keyway.
2. mechanical brake according to claim 1 is characterized in that: described fixed platen is fixedly set in the described rotating shaft.
3. mechanical brake according to claim 1 is characterized in that: the coupling end with described moveable platen in the described rotating shaft is provided with spacing shoulder.
4. mechanical brake according to claim 1 is characterized in that: the outer circumference surface of described moveable platen is provided with spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206070058U CN201882848U (en) | 2010-11-15 | 2010-11-15 | Mechanical brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206070058U CN201882848U (en) | 2010-11-15 | 2010-11-15 | Mechanical brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201882848U true CN201882848U (en) | 2011-06-29 |
Family
ID=44180386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206070058U Expired - Fee Related CN201882848U (en) | 2010-11-15 | 2010-11-15 | Mechanical brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201882848U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113321145A (en) * | 2021-05-20 | 2021-08-31 | 河北高鹏机械制造有限公司 | Improved structure of transmission thread of reversing ratchet wheel and long shaft for lever block |
-
2010
- 2010-11-15 CN CN2010206070058U patent/CN201882848U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113321145A (en) * | 2021-05-20 | 2021-08-31 | 河北高鹏机械制造有限公司 | Improved structure of transmission thread of reversing ratchet wheel and long shaft for lever block |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20111115 |