CN2296338Y - Pressure regulating speed regulating lift mechanism for tower crane - Google Patents
Pressure regulating speed regulating lift mechanism for tower crane Download PDFInfo
- Publication number
- CN2296338Y CN2296338Y CN 96239343 CN96239343U CN2296338Y CN 2296338 Y CN2296338 Y CN 2296338Y CN 96239343 CN96239343 CN 96239343 CN 96239343 U CN96239343 U CN 96239343U CN 2296338 Y CN2296338 Y CN 2296338Y
- Authority
- CN
- China
- Prior art keywords
- motor
- reductor
- hoisting motor
- reel
- speed
- 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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- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model relates to a voltage regulating and speed regulating hoisting mechanism for a tower crane, which is mainly composed of a hoisting motor, a speed reducer and a reel drum. The hoisting motor adopts a three-phase AC voltage regulating and speed regulating cage motor, the hoisting motor adopts single rotor, and a stator is wound with three winding, which makes the pole number of the hoisting motor two poles, four poles and 8 poles; the hoisting motor is connected with the reel drum by the speed reducer, the hoisting motor is horizontally arranged, and the hoisting motor is horizontally perpendicular to the shaft of the reel drum. The utility model utilizes a 83C52 type microprocessor to change the input voltage, control the hoisting motor and achieve the step constant power and constant-torque speed regulation to achieve the purpose of stepless speed regulation.
Description
The utility model relates to a kind of lifting mechanism in architectural use, mainly is tower crane variable voltage control lifting mechanism, and it is applied on 80-160 ton/rice hoisting crane.
Current, the lifting mechanism that uses on 80-160 ton/rice tower crane generally adopts double wrap line driven by motor reel, or double-motor energy consumption speed belt movable reel.There is complex structure in this class mechanism, and energy consumption is big, problems such as cost height.
The purpose of this utility model is exactly that a kind of tower crane variable voltage control lifting mechanism is provided in order to overcome the deficiencies in the prior art.
The purpose of this utility model can reach by following measure:
This lifting mechanism comprises motor, retarder, reel, mounting bracket etc., and 83C552 type microprocessor is adopted in electric machine speed regulation control.Concrete structure is that motor (4) adopts the three phase ac voltage regulation speed-regulating asynchronous motor, the rotor of motor adopts single rotor, be wound with three groups of coilings on the stator, number of poles is respectively 2 utmost points, 4 utmost points, 8 utmost points, the mouth of motor connects reductor (13), the mouth of reductor connects reel (2), the output shaft of motor and drum shaft (8) are horizontal vertical, reel is fixed on the drum shaft, two ends installation shaft bolsters (9), be provided with bearing (11) and seal ring (10) in the bearing frame, the drum shaft rear end connects limiting device (12).
The purpose of this utility model can also reach by following measure:
Blow off valve (1) is installed on the reductor, blower fan (3) is installed on the motor, motor rear end connects tachometer (7) and drg (5).
Reductor is a double reduction.
Description of drawings:
Fig. 1 is a front view of the present utility model, (1) blow off valve wherein, (2) reel, (3) blower fan, (4) motor, (5) drg, (6) support, (7) tachometer.
Fig. 2 is the mansion view of Fig. 1, wherein (13) reductor.
Fig. 3 is the lateral plan of Fig. 1, (8) drum shaft wherein, (9) bearing frame, (10) seal ring, (11) bearing, (12) limiting device.
The utlity model has following advantage:
1, lifting is steady, and is slow in place accurate.
2, long service life, the reliability height.
3, cost 25-55%.
Below the utility model is described further:
This tower crane lifting mechanism mainly is made up of lifting motor, reductor, reel, limiting device, mounting bracket.Motor adopts the multipole variable voltage control cage electromotor of having applied for a patent of three-phase alternating current.The structure of this motor is a fixing single rotor on motor shaft, and the stator respective rotor is fixed on the housing, and stator is wound with three groups of coilings, and the number of poles that makes motor is 2 utmost points, 4 utmost points, 8 utmost points.Motor is connected with reel by retarder (3000 rev/mins of input revolutions), and motor is horizontally-arranged to keep flat, and motor shaft and drum shaft are horizontal vertical.Speed governing is to change input voltage by 83C552 type microprocessor, control variable voltage control cage modle motor drives reel by the high deceleration machine and realizes that lifting mechanism has the permanent power of level, speed control by constant torque (2/4 is extremely uncomfortable), speed adjustable range 0-715 rev/min, belong to stepless time adjustment.Lifting velocity: low speed 0-30 rice/minute, middling speed 50-60 rice/minute, high speed 100-120 rice/minute (all referring to two ropes).
Claims (3)
1, a kind of tower crane variable voltage control lifting mechanism, it comprises motor, retarder, reel, mounting bracket, 83C522 type microprocessor is adopted in electric machine speed regulation control, it is characterized in that: motor (4) adopts the three phase ac voltage regulation speed-regulating asynchronous motor, the rotor of motor adopts single rotor, be wound with three groups of coilings on the stator, number of poles is respectively 2 utmost points, 4 utmost points, 8 utmost points; The mouth of motor connects reductor (13), and the mouth of reductor connects reel (2), and the output shaft of motor and drum shaft (8) are horizontal vertical; Reel is fixed on the drum shaft, and two ends installation shaft bolsters (9) are provided with bearing (11) and seal ring (10) in the bearing frame, and the drum shaft rear end connects limiting device (12).
2, according to the said lifting mechanism of claim 1, it is characterized in that: vapor cock (1) is installed on the reductor, blower fan (3) is installed on the motor, motor rear end connects tachometer (7) and drg (5).
3, according to the said lifting mechanism of claim 1, it is characterized in that: reductor is a double reduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96239343 CN2296338Y (en) | 1996-12-09 | 1996-12-09 | Pressure regulating speed regulating lift mechanism for tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96239343 CN2296338Y (en) | 1996-12-09 | 1996-12-09 | Pressure regulating speed regulating lift mechanism for tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2296338Y true CN2296338Y (en) | 1998-11-04 |
Family
ID=33914409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96239343 Expired - Fee Related CN2296338Y (en) | 1996-12-09 | 1996-12-09 | Pressure regulating speed regulating lift mechanism for tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2296338Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780929A (en) * | 2009-01-19 | 2010-07-21 | 抚顺永茂建筑机械有限公司 | Speed regulation and control system for lifting mechanism of tower crane |
| CN104310253A (en) * | 2014-09-01 | 2015-01-28 | 江苏政田重工股份有限公司 | Hoisting mechanism for translational type crane |
-
1996
- 1996-12-09 CN CN 96239343 patent/CN2296338Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101780929A (en) * | 2009-01-19 | 2010-07-21 | 抚顺永茂建筑机械有限公司 | Speed regulation and control system for lifting mechanism of tower crane |
| CN104310253A (en) * | 2014-09-01 | 2015-01-28 | 江苏政田重工股份有限公司 | Hoisting mechanism for translational type crane |
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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 |