CN201729586U - Speed regulating mechanism for tower crane - Google Patents
Speed regulating mechanism for tower crane Download PDFInfo
- Publication number
- CN201729586U CN201729586U CN2010202273246U CN201020227324U CN201729586U CN 201729586 U CN201729586 U CN 201729586U CN 2010202273246 U CN2010202273246 U CN 2010202273246U CN 201020227324 U CN201020227324 U CN 201020227324U CN 201729586 U CN201729586 U CN 201729586U
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- Prior art keywords
- variable
- frequency
- regulating mechanism
- tower crane
- motor
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- Expired - Fee Related
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Abstract
The utility model discloses a speed regulating mechanism for a tower crane, which comprises a winding drum, a deceleration device, a variable-frequency motor, a variable-frequency device and a linkage operation control system in sequential connection, wherein a rotational speed detection device of the motor is connected between the variable-frequency device and the variable-frequency motor, the variable-frequency device and the variable-frequency motor are connected with a brake device, and the brake device is further connected with the winding drum. The speed regulating mechanism for the tower crane has the advantages of wide regulating range, high safety and long service life.
Description
Technical field
The utility model relates to automatic control device, relates in particular to a kind of tower crane speed regulating mechanism.
Background technology
Existing tower crane adjustment mode is commonly step speed regulation, step speed regulation is bigger owing to impulsive force when speed governing, the steel structure of hoisting crane damages because of tired easily, reduced the service life of hoisting crane, and safety is also lower, brought potential safety hazard for the normal use of hoisting crane, this kind speed governing machinery speed adjustable range is little in addition.
The utility model content
The utility model is intended to overcome above the deficiencies in the prior art, and a kind of speed-regulating range width is provided, the tower crane speed regulating mechanism that safety is good.
The utility model technical solution problem adopts following technical scheme:
A kind of tower crane speed regulating mechanism comprises bonded assembly reel, retarding device, variable-frequency motor, frequency conversion equipment and combined operation control system successively; Also be connected with the motor speed detecting device between described frequency conversion equipment and the variable-frequency motor, described frequency conversion equipment and variable-frequency motor are connected with brake equipment, and described brake equipment also links to each other with reel; The effect of described combined operation control system is that whole regulating mechanism is controlled, and the effect of described motor speed detecting device is the rotating speed that detects variable-frequency motor.
Further, on frequency conversion equipment, also be connected with resistance box, be used to protect described tower crane speed regulating mechanism.
Principle of work of the present utility model is as follows:
Start the power supply of tower crane, contactless switch closure in the frequency converter, power supply promptly is access in.When combined operation control system outbound course, switching value and control rate frequency signal, be input to frequency converter, thereby realize the operation of each instruction, further realize the adjusting of speed.The motor speed detecting device is measured rotating speed of motor, and this signal is sent to frequency conversion equipment, with the signal of combined operation control system output relatively after, regulate the rotating speed of variable-frequency motor by the difference of signal.Tower crane hangs up weight when starting working, and the combined operation system sends run signal and frequency signal to frequency conversion equipment, and frequency conversion equipment is promptly by given signal operation.When slowing down, frequency conversion equipment reduces drum speed by retarding device, and frequency converter sends speed-slackening signal under the condition of load balance, makes the drg braking.
The beneficial effects of the utility model are: adopt frequency conversion equipment and variable-frequency motor in the speed regulating mechanism of tower crane, make that the setting range of speed regulating mechanism is wide, simultaneously because the steel structure of hoisting crane can not be subjected to frequent impact, be not easy to damage, thereby improved the safety of hoisting crane, prolonged the service life of hoisting crane.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model.
The specific embodiment
As shown in Figure 1, a kind of tower crane speed regulating mechanism comprises bonded assembly reel, retarding device, variable-frequency motor, frequency conversion equipment and combined operation control system successively; Also be connected with the motor speed detecting device between described frequency conversion equipment and the variable-frequency motor, described frequency conversion equipment and variable-frequency motor are connected with brake equipment, and described brake equipment also links to each other with reel; The effect of described combined operation control system is that whole regulating mechanism is controlled, and the effect of described motor speed detecting device is the rotating speed that detects variable-frequency motor.In concrete the enforcement,, also may on frequency conversion equipment, also connect resistance box in order to protect described tower crane speed regulating mechanism.
The above is preferred embodiment of the present utility model only, is not to be used to limit protection domain of the present utility model.
Claims (2)
1. a tower crane speed regulating mechanism is characterized in that: comprise bonded assembly reel, retarding device, variable-frequency motor, frequency conversion equipment and combined operation control system successively; Also be connected with the motor speed detecting device between described frequency conversion equipment and the variable-frequency motor, described frequency conversion equipment and variable-frequency motor are connected with brake equipment, and described brake equipment also links to each other with reel.
2. tower crane speed regulating mechanism according to claim 1 is characterized in that: also be connected with resistance box on frequency conversion equipment, be used to protect described tower crane speed regulating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202273246U CN201729586U (en) | 2010-06-12 | 2010-06-12 | Speed regulating mechanism for tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202273246U CN201729586U (en) | 2010-06-12 | 2010-06-12 | Speed regulating mechanism for tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201729586U true CN201729586U (en) | 2011-02-02 |
Family
ID=43520742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202273246U Expired - Fee Related CN201729586U (en) | 2010-06-12 | 2010-06-12 | Speed regulating mechanism for tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201729586U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070096A (en) * | 2010-06-12 | 2011-05-25 | 无锡核力重工有限公司 | Speed regulation mechanism for tower crane |
| CN103274297A (en) * | 2013-06-04 | 2013-09-04 | 中联重科股份有限公司 | Tower crane, as well as hoisting control device, method and system thereof |
-
2010
- 2010-06-12 CN CN2010202273246U patent/CN201729586U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102070096A (en) * | 2010-06-12 | 2011-05-25 | 无锡核力重工有限公司 | Speed regulation mechanism for tower crane |
| CN103274297A (en) * | 2013-06-04 | 2013-09-04 | 中联重科股份有限公司 | Tower crane, as well as hoisting control device, method and system thereof |
| CN103274297B (en) * | 2013-06-04 | 2015-09-16 | 中联重科股份有限公司 | A kind of tower crane lifting control convenience, method, system and tower machine |
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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: 20110202 Termination date: 20110612 |