CN2721596Y - Explosion-proof hoisting elevator mechanism with second brake - Google Patents
Explosion-proof hoisting elevator mechanism with second brake Download PDFInfo
- Publication number
- CN2721596Y CN2721596Y CN 200420029598 CN200420029598U CN2721596Y CN 2721596 Y CN2721596 Y CN 2721596Y CN 200420029598 CN200420029598 CN 200420029598 CN 200420029598 U CN200420029598 U CN 200420029598U CN 2721596 Y CN2721596 Y CN 2721596Y
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- explosion
- proof
- drg
- brake
- high speed
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- Expired - Fee Related
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Abstract
The utility model belongs to an explosion-proof hoisting elevator mechanism with second brake in the hoisting and transporting field. The main technological schemes comprise: a decelerator is provided with two high speed shafts, one high speed shaft is connected to an explosion-proof motor, and the other high speed shaft is connected with a brake shaft by a clutch; an explosion-suppression cavity is attached outside of the brake shaft; the decelerator is fixed with the explosion-suppression cavity by a flange of the decelerator. The utility model has the advantages of simple structure, safety, and reliability, solving the problem of the explosion-proof hoist in the prior braking art without a second brake and effectively improving the safety in the mechanical engineering field of explosion proof.
Description
Affiliated field
The utility model belongs to the lifting transport field, especially a kind of explosion-proof winding type lift system with second drg.
Background technology
Drg that the explosion-proof crane that uses in a lot of explosion-proof occasions is installed and used generally be by fire proof motor self with first drg (this first drg is installed in the explosion-proof chamber of motor in) realization braking work.Because the hoisting crane that uses in explosion-proof occasion requires that to its lifted weight very high safety is arranged, and therefore, only has the independent brake of first drg to be difficult to ensure aspect safety.At present in non-explosion-proof occasion, it is second drg that adopts the friction-disc of brake drum, perhaps also can be second drg at the non-shaft stretching end mounting strap brake wheel of motor, the task of this second drg be the malfunctioning secondary braking that carries out of contingency that remedies first drg.But above two kinds of drgs are all braked by rubbing in the external world, having friction just might produce spark, and this allows in explosion-proof environment of damp to take place having anything but.
Present employed explosion-proof crane does not also design equipped second drg basically.
Summary of the invention
The purpose of this utility model is to provide a kind of explosion-proof winding type lift system with second drg, and it and retarder organically combine, and has explosion prevention function and can realize the secondary braking of explosion-proof crane.
The purpose of this utility model is achieved in that
This is with the explosion-proof winding type lift system of second drg, constitute by fire proof motor, roll device, drg, retarder, its technical scheme is: the retarder design has two high speed shafts, a high speed shaft links to each other with fire proof motor, another high speed shaft is connected with drg by coupler, drg is fixed with the flame proof cavity outward, and retarder is affixed by retarder flange and this flame proof cavity.
In addition, above-mentioned described drg is a plate disc brake.
Advantage of the present utility model and good effect are:
A high speed shaft of fire proof motor drive speed reducer, the output shaft of this reductor link to each other with roll device and drive the lifting that roll device is realized lift cargo, and another high speed shaft of retarder links to each other by coupler with second drg.This second drg in the fire proof motor explosion-proof chamber first brake failure or realize braking when other problems occurring at once, ensure the safety of roll device handling work effectively.And retarder and second drg realize being connected by the retarder flange, and the flame proof cavity of second drg can be realized flame proof.The utility model is simple in structure, and is safe and reliable, overcome the difficult problem that can not be equipped with second drg in the existing explosion-proof crane braking technology, improved the safety in explosion-proof machine engineering field effectively.
Description of drawings
Fig. 1 is a front view of the present utility model;
Fig. 2 is the connection structure scheme drawing of second drg and retarder.
The specific embodiment
Below in conjunction with accompanying drawing the utility model embodiment is further described:
This drg belongs to closed type, and when promptly no current passed through, its axle was in braking mode.The lock torque of drg is produced by friction force, and when making current, drg promptly unclamps.
Principle of work of the present utility model is:
Work as glancing impact, pressed to the anti-friction face of flame proof cavity by armature disc 14 by spring 15 via the rotor 13 that feather key is installed on the axle sleeve 12, the flange that flame proof cavity and retarder carry is affixed by bolt, thereby produces lock torque.At this moment, armature disc and and stator 10 between can produce an air gap.When discharging glancing impact, stator coil 9 is passed to electric current, and the magnetic field that is produced makes the armature disc compression spring and presses to stator, and this moment, rotor was released, and braking is removed.More than all braking maneuvers all in explosion-proof chamber, finish, even because friction produces spark, spark also will be limited in the explosion-proof chamber, the exterior damp of cavity can not ignited.
This design not only makes explosion-proof crane add second drg becomes possibility, and it makes the safety of explosion-proof crane more secure.
Claims (2)
1. explosion-proof winding type lift system with second drg, constitute by fire proof motor, roll device, drg, retarder, it is characterized in that: the retarder design has two high speed shafts, a high speed shaft links to each other with fire proof motor, another high speed shaft is connected with drg by coupler, drg is fixed with the flame proof cavity outward, and retarder is affixed by retarder flange and this flame proof cavity.
2. the explosion-proof winding type lift system with second drg according to claim 1, it is characterized in that: described drg is a plate disc brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420029598 CN2721596Y (en) | 2004-08-24 | 2004-08-24 | Explosion-proof hoisting elevator mechanism with second brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420029598 CN2721596Y (en) | 2004-08-24 | 2004-08-24 | Explosion-proof hoisting elevator mechanism with second brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2721596Y true CN2721596Y (en) | 2005-08-31 |
Family
ID=35011972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420029598 Expired - Fee Related CN2721596Y (en) | 2004-08-24 | 2004-08-24 | Explosion-proof hoisting elevator mechanism with second brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2721596Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101323423B (en) * | 2008-07-17 | 2010-06-02 | 常熟市海鸥机械有限责任公司 | Energy-saving safe minisize electric gourd |
| CN102556880A (en) * | 2011-10-25 | 2012-07-11 | 大连华锐重工集团股份有限公司 | Braking system for operating mechanism of crane and control method of braking system |
-
2004
- 2004-08-24 CN CN 200420029598 patent/CN2721596Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101323423B (en) * | 2008-07-17 | 2010-06-02 | 常熟市海鸥机械有限责任公司 | Energy-saving safe minisize electric gourd |
| CN102556880A (en) * | 2011-10-25 | 2012-07-11 | 大连华锐重工集团股份有限公司 | Braking system for operating mechanism of crane and control method of braking system |
| CN102556880B (en) * | 2011-10-25 | 2013-09-25 | 大连华锐重工集团股份有限公司 | Braking system for operating mechanism of crane and control method of braking system |
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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 |