CN201038907Y - Calabash motor with automatically adjusting braking clearance - Google Patents
Calabash motor with automatically adjusting braking clearance Download PDFInfo
- Publication number
- CN201038907Y CN201038907Y CNU2007200039098U CN200720003909U CN201038907Y CN 201038907 Y CN201038907 Y CN 201038907Y CN U2007200039098 U CNU2007200039098 U CN U2007200039098U CN 200720003909 U CN200720003909 U CN 200720003909U CN 201038907 Y CN201038907 Y CN 201038907Y
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- utility
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- bonnet
- brake
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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Braking Arrangements (AREA)
Abstract
The utility model provides a hoist motor which can adjust a brake air gap automatically, comprising a common motor, the utility model is characterized in that the utility model further comprises a fixed brake disk, a friction disk, an armature, an electromagnet, a spring, a back cover and a backstop device. The utility model has the effects that: 1. the utility model can automatically adjust the situation that the brake air gap is increased after the wear of the friction disk, then the brake air gap can maintain a constant value, so the brake torque can not be affected, thus avoiding the trouble and inconvenience of manual adjustment of the brake air gap by regularly climbing in the past. 2; a bearing of a motor rotor is not easy to be damaged, the failure rate is low and the maintenance time is less; 3. the starting current of the motor is small, and the service life is prolonged compared with the existing motors; 4. the utility model can be released and braked manually after the power off, so as to eliminate the safety hidden trouble of suspending the heavy objects in the mid-air.
Description
Technical field: the utility model relates to a kind of improved cucurbit motor, the particularly a kind of cucurbit motor that can adjust brake clearance automatically.
Technical background: the existing motor that is used on the hoist crane is a Cone-shaped electric machine, it mainly by cone rotor, be enclosed within tripping spring, fan braked wheel on the cone rotor, be located at braking ring on the end cap and stator and shell and form.Its operation and braking are: electrical power, and cone rotor produces axial displacement under the effect of axial magnetic field force, the braking ring on fan braked wheel and the electric motor end cap is thrown off, and motor can rotate automatically, simultaneously the compression brake spring; Axial magnetic disappears during outage, and rotor produces axial displacement under tripping spring thrust, make the fan braked wheel compress braking ring, produces frictional force, forces the rapid stall of motor.The deficiency that this kind motor in use exists has following several aspect: 1, braking moment descends after fan braked wheel and the abrasion of end cap braking ring, needs frequent manual adjustment brake clearance, the work high above the ground inconvenience.2, cone rotor frequently moves axially under the effect of axial magnetic and tripping spring, and bearing damages easily, and maintenance time is many.3, because of promoting cone rotor axial displacement, the electric motor starting electric current is big, and the life-span is shorter.4, after the power failure, can not manual releasing brake, weight is parked in the high-altitude for a long time, and potential safety hazard is arranged.
Summary of the invention: the purpose of this utility model is, at the existing above-mentioned deficiency of existing hoist crane motor, but and propose a kind ofly can to adjust brake clearance automatically, starting current is little, fault is few, the life-span is long and the cucurbit motor of manual releasing braking.
Can realize the purpose of this utility model by following technical proposals, a kind of cucurbit motor that can adjust brake clearance automatically, comprise the common electric machine rotor, stator, casing, it is characterized in that it also comprises fixedly brake disc, frictional disk, armature, electromagnet, spring, bonnet, backstopping device, fixedly brake disc and bonnet are fixed by the set bolt that is fixed on the electric motor end cap, the exposure end of machine shaft one end passes fixedly, and brake disc is connected with frictional disk by spline, frictional disk can move axially, armature, electromagnet is enclosed within on the set bolt successively, be provided with spring between bonnet and armature, the backstopping device assembly is enclosed within on the set bolt.
But manual releasing braking when having a power failure for making, the leader passes bonnet fixedlys connected with electromagnet.
For adjusting to the elastic force of spring, on bonnet, be provided with an adjustment cover that is connected with the bonnet spiral, spring one end is inserted in to be adjusted in the cover.
Effect of the present utility model is: 1, can adjust the situation that takes place to increase because of frictional disk wearing and tearing back brake clearance automatically, brake clearance is protected relied on a normal value, thereby make braking moment unaffected, it has removed the trouble and inconvenience of the manual adjustment brake clearance of in the past need often climbing from.2, the bearing of rotor is not fragile, and failure rate is low, and maintenance time is few.Because rotor is the common electric machine rotor, axial displacement does not take place in its axial restraint, so bearing is not fragile.3, the electric motor starting electric current is little, and its life-span prolongs than existing motor, no longer needs pushing motor rotor axial displacement when this is electric motor starting.4, after the power failure, but weight suspention potential safety hazard is in midair removed in the manual releasing braking.
Below in conjunction with embodiment and accompanying drawing the utility model is further set forth
Description of drawings
Accompanying drawing 1 is the utility model structural representation (broken section);
Accompanying drawing 2 is the structure enlarged diagram of backstopping device assembly in the utility model.
Embodiment: referring to accompanying drawing 1,2, motor stator 1 is fixed on the casing 2.Rotor 3 is fixed on the machine shaft 4.Fixedly brake disc 5 blocks it fixing by the standing screw 6 that is connected with the electric motor end cap spiral by sleeve pipe 14.Standing screw 6 is 4, also can be 3 as required.Frictional disk 8 and machine shaft 4 are connected by spline, can move axially at machine shaft 4.Armature 9, electromagnet 10 are enclosed within on the sleeve pipe 14 successively, are provided with the gap between them.Spring 11 is by the circular hole of electromagnet 10, and an end is resisted against on the armature 9, and the other end is resisted against on the bonnet 12.For adjusting to the elastic force of spring 11, on bonnet 12, be provided with an adjustment cover 13 that is connected with bonnet 12 spirals, spring 11 is inserted within it.Adjust cover 13 by screwing, can adjust the elastic force of spring 11, thereby make braking moment meet instructions for use.Backstopping device assembly 7 is made of with elastic scheibe 78, sealing ring 79 cone 71, spring 72, steel ball 73, spacer 74, gland 75, bolt 76, ring washer 77, hole.Cone 71 is enclosed within the sleeve pipe 14 and is fixed on the electromagnet 10.Spring 72 is enclosed within the sleeve pipe 14, and an end is against sealing ring 79, and the other end is against ring washer 77.The hole is located between sealing ring 79 and the cone 71 with elastic scheibe 78.Steel ball 73 is located between ring washer 77 and the gland 75.Bolt 76 is connected with armature 9 spirals by gland 75, spacer 74.But manual releasing braking when having a power failure for making, leader 15 passes bonnet 12 fixedlys connected with electromagnet 10.
Workflow of the present utility model is: energising, and electromagnet 10 produces magnetic field under the function of current, attract armature 9, and compression spring 11 makes frictional disk 8 and fixing brake disc 5 armature 9 produce gaps, and motor freely rotates.Electromagnet 10 magnetic fields disappear during outage, and armature 9 forces the rapid stall of motor rapidly frictional disk 8 being pressed under spring 11 effects fixedly on the brake disc 5.When frictional disk 8 when wearing and tearing its thickness attenuation, the brake clearance between frictional disk 8 and the armature 9 increases, backstopping device assembly 7 can be adjusted automatically to brake clearance.The process of adjusting is: energising, under the attraction of electromagnet 10, armature 9, gland 75, bolt 76 move upward together, steel ball 73 is under the effect of spring 72, be resisted against between the inclined-plane and sleeve pipe 14 of cone 71, cone 71 and electromagnet 10 can not be moved downward and be positioned at this, armature 9 continues to move upward, produce the gap with frictional disk 8, motor rotates; During outage, electromagnet 10 magnetic fields disappear, armature 9 moves downward together with gland 75, bolt 76 under spring 11 effects, 75 times pressing steel balls 73 of gland, the location that steel ball 73 is removed cone 71 and electromagnet 10 moves downward together until abutting against on the frictional disk 8 cone 71 and electromagnet 10 and armature 9.When switching on for the second time, cone 71 and electromagnet 10 be location on sleeve pipe 14 again, and the position of location moves down a segment distance when locating than the first time, and this segment distance is the thickness of frictional disk 8 wearing and tearing.
Claims (3)
1. the cucurbit motor that can adjust brake clearance automatically, comprise the common electric machine rotor, stator, casing, it is characterized in that it also comprises fixedly brake disc, frictional disk, armature, electromagnet, spring, bonnet, the backstopping device assembly, fixedly brake disc and bonnet are fixed by the set bolt that is fixed on the electric motor end cap, the exposure end of machine shaft one end passes fixedly, and brake disc is connected with frictional disk by spline, frictional disk can move axially on machine shaft, armature, electromagnet is enclosed within on the set bolt successively, be provided with spring between bonnet and armature, the backstopping device assembly is enclosed within on the set bolt.
2. by the described cucurbit motor that can adjust brake clearance automatically of claim 1, it is characterized in that the leader passes bonnet fixedlys connected with electromagnet.
3. by claim 1 or the 2 described cucurbit motors that can adjust brake clearance automatically, it is characterized in that, be provided with an adjustment cover that is connected with the bonnet spiral on bonnet, spring one end is inserted in to be adjusted in the cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200039098U CN201038907Y (en) | 2007-01-19 | 2007-01-19 | Calabash motor with automatically adjusting braking clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200039098U CN201038907Y (en) | 2007-01-19 | 2007-01-19 | Calabash motor with automatically adjusting braking clearance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201038907Y true CN201038907Y (en) | 2008-03-19 |
Family
ID=39211431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200039098U Expired - Fee Related CN201038907Y (en) | 2007-01-19 | 2007-01-19 | Calabash motor with automatically adjusting braking clearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201038907Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062148A (en) * | 2010-11-30 | 2011-05-18 | 北京前沿科学研究所 | Conical magnetic suspension bearing |
-
2007
- 2007-01-19 CN CNU2007200039098U patent/CN201038907Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102062148A (en) * | 2010-11-30 | 2011-05-18 | 北京前沿科学研究所 | Conical magnetic suspension bearing |
| CN102062148B (en) * | 2010-11-30 | 2012-12-12 | 北京前沿科学研究所 | Conical magnetic suspension bearing |
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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: 20080319 Termination date: 20110119 |