CN202400766U - Miniature direct-current hoist with closed mechanical load limiter - Google Patents
Miniature direct-current hoist with closed mechanical load limiter Download PDFInfo
- Publication number
- CN202400766U CN202400766U CN2011205786120U CN201120578612U CN202400766U CN 202400766 U CN202400766 U CN 202400766U CN 2011205786120 U CN2011205786120 U CN 2011205786120U CN 201120578612 U CN201120578612 U CN 201120578612U CN 202400766 U CN202400766 U CN 202400766U
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- disk
- motor
- load limiter
- transmission connection
- output
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Abstract
The utility model discloses a miniature direct-current hoist with a closed mechanical load limiter, which comprises a shell. A motor, a speed reducer and a winding drum are arranged in the shell, the speed reducer is in transmission connection with a winding drum shaft in the winding drum, the motor is a direct-current motor, an output shaft of the motor is connected with the load limiter which is in transmission connection with the speed reducer through a transmission shaft, the load limiter comprises an input disk, a static friction disk, friction plates, a dynamical friction disk, an output disk and a load limiting spring, the input disk is in transmission connection with the output shaft, the static friction disk is fixedly connected with the output disk, the friction plates are arranged on two sides of the input disk and integrally connected with the input disk, the load-limiting spring is arranged between the dynamical friction disk and the output disk, the friction plates and the input disk are tightly pressed between the static friction disk and the dynamical friction disk, and the output disk is in transmission connection with the transmission shaft. The miniature direct-current hoist with the closed mechanical load limiter is simple in structure and safe in use and has the function of load limiting.
Description
Technical field
The utility model relates to a kind of up-down weight-lifting equipment, particularly a kind of minisize dc lifting machine with closed mechanical load limitation device.
Background technology
Lifting machine is a kind of general up-down weight-lifting equipment that uses, occur on market and the data and the lifting machine report mainly be with alternating current as propulsion source, be divided into industrial and two kinds of family expenses; Industrial is the three-phase lifting machine, and mostly its structural shape is to adopt phase asynchronous taper braking motor, reel, the coaxial in order connection of retarder; Family expenses be single-phase lifting machine, mostly its structural shape is to adopt single-phase asynchronous side magnetic braking motor, retarder, the coaxial in order connection of reel.Because existing lifting machine can only be satisfied with the occasion that source of AC is arranged, and just powerless for the occasion of having only direct supply, and does not all have the limit for tonnage function, has very big potential safety hazard.
Summary of the invention
The utility model has overcome the deficiency that prior art exists, and provides a kind of simple in structure, safe in utilization, has the limit for tonnage function, is suitable for the minisize dc lifting machine of direct supply occasion.
For realizing above-mentioned purpose, the utility model adopts following technical scheme: a kind of minisize dc lifting machine with closed mechanical load limitation device includes housing; Sending out in the housing has motor, retarder and reel, and the drum shaft in described retarder and the reel is in transmission connection, and described motor is a DC machine; The output shaft of described motor is connected with a load limiter; Described load limiter is in transmission connection through transmission shaft and retarder, and described load limiter includes input disc, static friction dish, friction lining, dynamic friction dish, output panel and limit for tonnage spring, and described input disc and output shaft are in transmission connection; Described static friction dish is captiveed joint with output panel; Described friction lining is arranged on the both sides of input disc, and is connected with the input disc one, and described limit for tonnage spring is arranged between dynamic friction dish and the output panel; Friction lining and input disc are pressed between static friction dish and the dynamic friction dish, and described output panel and transmission shaft are in transmission connection.
The utility model can be directly be input to the corresponding both positive and negative polarity of motor with the both positive and negative polarity of direct supply, and motor produces power, through load limiter and retarder, at last power is passed to reel and weight is promoted.Described load limiter can limit the lifting weight of heavy; When weight of heavy has surpassed the load of limit for tonnage spring; Friction lining skids on the contact surface of static friction dish and dynamic friction dish, and power can't pass to output panel, and reel can't rotate; Just can not weight be promoted, improve the safety of operation coefficient of machine greatly.
The beneficial effect of the utility model is, owing to selected DC machine for use, enlarged the use occasion of lifting machine, and such as using having only on the goods carrying vehicle of direct supply, the current society in that labor cost increases day by day has vast market prospect.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described:
Accompanying drawing is the structural representation of the utility model embodiment;
1. housings among the figure, 2. motor, 21. output shafts, 3. retarder, 4. reel, 41. drum shaft, 5. load limiter, 51. input discs, 52. static friction dishes, 53. friction linings, 54. dynamic friction dishes, 55. output panels, 56. limit for tonnage spring, 6. transmission shafts.
The specific embodiment
With reference to accompanying drawing, a kind of minisize dc lifting machine with closed mechanical load limitation device includes housing 1; Be provided with motor 2, retarder 3 and reel 4 in the housing 1, described retarder 3 is in transmission connection with reel 4 interior drum shaft 41, and described motor 2 is a DC machine; The output shaft 21 of described motor 2 is connected with a load limiter 5; Described load limiter 5 is in transmission connection through transmission shaft 6 and retarder 3, and described load limiter 5 includes input disc 51, static friction dish 52, friction lining 53, dynamic friction dish 54, output panel 55 and limit for tonnage spring 56, and described input disc 51 is in transmission connection with output shaft 21; Described static friction dish 52 is captiveed joint with output panel 55; Described friction lining 53 is arranged on the both sides of input disc 51, and is connected with input disc 51 one, and described limit for tonnage spring 56 is arranged between dynamic friction dish 54 and the output panel 55; Friction lining 53 and input disc 51 are pressed between static friction dish 52 and the dynamic friction dish 54, and described output panel 55 is in transmission connection with transmission shaft 6.
The concrete principle of work of the utility model is: the both positive and negative polarity of direct supply is input to motor 2 corresponding both positive and negative polarities, this moment motor 2 output shaft 21 high speed rotating, described load limiter 5 rotates synchronously; Driving transmission shaft 6 rotates; Through retarder 3 rotating speed is reduced, and give drum shaft 41, drum shaft 41 is slowly run transmission of power; Drive reel 4 and rotate, thereby weight is promoted; If the transposing of the both positive and negative polarity of direct supply is input to motor 2 corresponding both positive and negative polarities, motor 2 reverse high speed rotating at this moment, load limiter 5, retarder 3 and reel 4 be backward rotation also, and weight is transferred; When the weight of heavy of need lifting has surpassed the load of limit for tonnage spring 56; Friction lining 53 just can skid on the contact surface of static friction dish 52 and dynamic friction dish 54; Power can't pass to output panel 55, and reel 4 can't rotate, and can not weight be promoted; Thereby play the effect of limit for tonnage, improved the safety of operation coefficient of machine greatly.
Claims (1)
1. minisize dc lifting machine with closed mechanical load limitation device; Include housing (1); Be provided with motor (2), retarder (3) and reel (4) in the housing (1), described retarder (3) is in transmission connection with the interior drum shaft (41) of reel (4), and it is characterized in that: described motor (2) is a DC machine; The output shaft (21) of described motor (2) is connected with a load limiter (5); Described load limiter (5) is in transmission connection through transmission shaft (6) and retarder (3), and described load limiter (5) includes input disc (51), static friction dish (52), friction lining (53), dynamic friction dish (54), output panel (55) and limit for tonnage spring (56), and described input disc (51) is in transmission connection with output shaft (21); Described static friction dish (52) is captiveed joint with output panel (55); Described friction lining (53) is arranged on the both sides of input disc (51), and is connected with input disc (51) one, and described limit for tonnage spring (56) is arranged between dynamic friction dish (54) and the output panel (55); Friction lining (53) and input disc (51) are pressed between static friction dish (52) and the dynamic friction dish (54), and described output panel (55) is in transmission connection with transmission shaft (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205786120U CN202400766U (en) | 2011-12-31 | 2011-12-31 | Miniature direct-current hoist with closed mechanical load limiter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205786120U CN202400766U (en) | 2011-12-31 | 2011-12-31 | Miniature direct-current hoist with closed mechanical load limiter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202400766U true CN202400766U (en) | 2012-08-29 |
Family
ID=46698429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205786120U Expired - Fee Related CN202400766U (en) | 2011-12-31 | 2011-12-31 | Miniature direct-current hoist with closed mechanical load limiter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202400766U (en) |
-
2011
- 2011-12-31 CN CN2011205786120U patent/CN202400766U/en not_active Expired - Fee Related
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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: 20120829 Termination date: 20131231 |