CN201512376U - Electric hoist - Google Patents
Electric hoist Download PDFInfo
- Publication number
- CN201512376U CN201512376U CN2009203124250U CN200920312425U CN201512376U CN 201512376 U CN201512376 U CN 201512376U CN 2009203124250 U CN2009203124250 U CN 2009203124250U CN 200920312425 U CN200920312425 U CN 200920312425U CN 201512376 U CN201512376 U CN 201512376U
- Authority
- CN
- China
- Prior art keywords
- friction disc
- retarder
- direct
- braking
- shaft
- 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 discloses an improved electric hoist which comprises a shell; the shell is internally provided with a motor, a winding drum and a speed reducer, wherein the speed reducer and a drum shaft in the winding drum are connected in a transmission way. The improved electric hoist is characterized in that the motor is a direct-current motor; an output shaft of the direct-current motor is connected with a brake; and the brake is connected with the speed reducer in a transmission way by a transmission shaft. The improved electric hoist can directly input the anode and cathode of a direct-current power supply to corresponding anode and cathode of the direct-current motor, the direct-current motor generates power and transmits the power to the winding drum shaft finally through the brake, a load limiter and the speed reducer, and lifts the weight, thus meeting the requirement of the existing direct-current power supply on circumstance.
Description
Technical field
The utility model relates to a kind of improvement invention of electric block.
Background technology
Existing electric block all is to use alternating current as propulsion source, is divided into industrial and family expenses.Industrial have a three-phase electric block, and mostly its structural shape is to adopt phase asynchronous taper braking motor, reel, the coaxial in turn connection of retarder; Family expenses are generally single-phase electric gourd, and mostly its structural shape is to adopt single-phase asynchronous side magnetic braking motor, retarder, the coaxial in turn connection of reel.Because existing electric block can only satisfy the occasion that source of AC is arranged, and just powerless for the occasion of having only direct supply.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of direct current drive cucurbit that is suitable for the direct supply occasion.
In order to solve the problems of the technologies described above, the utility model adopts following scheme to realize: this kind electric block, has housing, be provided with motor, reel and retarder in the housing, drum shaft in described retarder and the reel is in transmission connection, it is characterized in that described motor is a DC machine, the output shaft of described DC machine is connected with a drg, and described drg is in transmission connection by transmission shaft and retarder.
Described drg includes braking sleeve, is with braking shiifter A, braking shiifter B and Brake torsion spring in the described braking sleeve, and the output shaft of described braking shiifter A and DC machine is in transmission connection, and described braking shiifter B is connected with transmission shaft.
Be provided with load limiter between described drg and the retarder.
Described load limiter includes friction disc A, friction disc B and limit for tonnage spring, and described limit for tonnage spring is placed in outside the transmission shaft, and described friction disc A is connected with transmission shaft, is provided with friction lining between described friction disc B and the friction disc A, and described friction disc B and retarder are in transmission connection.
The utility model can be directly be input to the corresponding both positive and negative polarity of DC machine with the both positive and negative polarity of direct supply, and DC machine produces power, through drg, load limiter and retarder, at last power is passed to drum shaft and weight is promoted.Described load limiter can limit the weight of heavy of lifting, and when weight of heavy had surpassed the load of limit for tonnage spring, friction lining skidded on friction disc B, and power can't pass to friction disc B, weight can not be promoted, and has so improved the machine operation safety factor.
Description of drawings
Relevant details and the principle of work thereof of embodiment have been further described below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present utility model.
The specific embodiment
With reference to accompanying drawing, this kind electric block has housing 16, is provided with DC machine 1, drg, load limiter, retarder 12 and reel 14 in the housing 16 successively.Described drg includes braking sleeve 3, is with braking shiifter A5, braking shiifter B6 and Brake torsion spring 4 in the described braking sleeve 3, and the output shaft 2 of described braking shiifter A5 and DC machine is in transmission connection, and described braking shiifter B6 is connected with transmission shaft 7; Described load limiter includes friction disc A9, friction disc B11 and limit for tonnage spring 8, described limit for tonnage spring 8 is placed in outside the transmission shaft 7, described friction disc A9 is connected with transmission shaft 7, be provided with friction lining 10 between described friction disc B11 and the friction disc A9, described friction disc B11 slows down rotating speed by retarder 12, and give drum shaft 13 in the reel with transmission of power, final drum shaft 13 drives reels 14 and rotates, and weight is promoted.The structure of described reel 14 can be decided according to the media that promotes weight, such as, use the rope hoisting weight, the structure of reel is the rope roll structure; Promote weight with chain, the structure of reel is a chain sprocket structure; If promote weight with band, the structure of reel is the belt wheel structure.
During the work of this machine, directly the both positive and negative polarity with direct supply is input to DC machine 1 corresponding both positive and negative polarity, this moment motor output shaft 2 high speed rotating, described braking shiifter A5 rotates synchronously, drive Brake torsion spring 4 and rotate, because the external diameter of Brake torsion spring 4 is in deflated state under the effect of braking shiifter A5 at this moment, so can in braking sleeve 3, freely rotate, described braking shiifter B6 also and then rotates, and drives transmission shaft 7 rotations; Transmission shaft 7 drives friction disc A9 and rotates, under the effect of limit for tonnage spring 8, friction disc A9 drives friction disc B11 and rotates, described friction disc B11 reduces rotating speed by retarder 12, and give drum shaft 13 with transmission of power, and drum shaft 13 is slowly run, drive reel 14 and rotate, steel rope 15 is involved in reel 14 gradually, the weight that hangs on the steel rope 15 is promoted.If the both positive and negative polarity transposing of direct supply is input to DC machine 1 corresponding both positive and negative polarity, this moment, motor output shaft 2 high-speed reverse were rotated, and drg, load limiter, retarder and reel are made counteragent, and weight is transferred.
When cutting off direct supply, then DC machine 1 stops operating, the weight that be suspended on the steel rope 15 this moment has a declining tendency, with the reverse braking shiifter B6 that passes to of torque, drive Brake torsion spring 4, this moment, the external diameter of Brake torsion spring 4 was in expanded state under the effect of braking shiifter B6, so can not freely rotate in braking sleeve 3, thereby played the effect of braking.The load that has surpassed limit for tonnage spring 8 when the weight of heavy of need lifting, this moment, friction lining just can skid on friction disc, so just can not give friction disc B11 with transmission of power, then drum shaft 13 can not be rotated, promptly weight can not be promoted, thereby play the effect of limit for tonnage, improved the safety of operation coefficient of machine.
Claims (4)
1. electric block, has housing (16), be provided with motor (1), reel (14) and retarder (12) in the housing (16), drum shaft (13) in described retarder (12) and the reel (14) is in transmission connection, it is characterized in that described motor (1) is DC machine, the output shaft of described DC machine (2) is connected with a drg, and described drg is in transmission connection by transmission shaft (7) and retarder (12).
2. a kind of electric block according to claim 1, it is characterized in that described drg includes braking sleeve (3), be with braking shiifter A (5), braking shiifter B (6) and Brake torsion spring (4) in the described braking sleeve (3), described braking shiifter A (5) is in transmission connection with the output shaft (2) of DC machine, and described braking shiifter B (6) is connected with transmission shaft (7).
3. a kind of electric block according to claim 1 is characterized in that being provided with load limiter between described drg and the retarder (12).
4. a kind of electric block according to claim 3, it is characterized in that described load limiter includes friction disc A (9), friction disc B (11) and limit for tonnage spring (8), described limit for tonnage spring (8) is placed in outside the transmission shaft (7), described friction disc A (9) is connected with transmission shaft (7), be provided with friction lining (10) between described friction disc B (11) and the friction disc A (9), described friction disc B (11) is in transmission connection with retarder (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203124250U CN201512376U (en) | 2009-10-14 | 2009-10-14 | Electric hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203124250U CN201512376U (en) | 2009-10-14 | 2009-10-14 | Electric hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201512376U true CN201512376U (en) | 2010-06-23 |
Family
ID=42483782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203124250U Expired - Fee Related CN201512376U (en) | 2009-10-14 | 2009-10-14 | Electric hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201512376U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467275A (en) * | 2014-12-17 | 2015-03-25 | 江麓机电集团有限公司 | Multifunctional integrated electric driver |
| CN106744446A (en) * | 2016-12-01 | 2017-05-31 | 郑州航空工业管理学院 | The electric block of plant equipment is transported for workshop manufacture scheduling process |
-
2009
- 2009-10-14 CN CN2009203124250U patent/CN201512376U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467275A (en) * | 2014-12-17 | 2015-03-25 | 江麓机电集团有限公司 | Multifunctional integrated electric driver |
| CN104467275B (en) * | 2014-12-17 | 2017-01-04 | 江麓机电集团有限公司 | A kind of integral-type electric driver |
| CN106744446A (en) * | 2016-12-01 | 2017-05-31 | 郑州航空工业管理学院 | The electric block of plant equipment is transported for workshop manufacture scheduling process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100623 Termination date: 20171014 |