CN202138963U - Lifting device of attached tower crane secondary hook - Google Patents
Lifting device of attached tower crane secondary hook Download PDFInfo
- Publication number
- CN202138963U CN202138963U CN201120185000U CN201120185000U CN202138963U CN 202138963 U CN202138963 U CN 202138963U CN 201120185000 U CN201120185000 U CN 201120185000U CN 201120185000 U CN201120185000 U CN 201120185000U CN 202138963 U CN202138963 U CN 202138963U
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- Prior art keywords
- variable frequency
- variable
- control cabinet
- utility
- speed
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Abstract
The utility model discloses a lifting device of attached tower crane secondary hook, comprising a variable frequency motor, a winding drum, a lifting rope, a secondary rope and a variable frequency control cabinet, wherein a PLC controller and a frequency converter are installed in the variable frequency control cabinet and connected with each other; said PLC controller is connected with an operating handle and a signal controller; the frequency converter is connected with the variable frequency motor. An inlet wire reactor, a relay, a contactor, an air switch and an axial flow fan are further arranged in the variable frequency control cabinet. The utility model makes use of modern frequency conversion technology and automatic control technology, through the data collection and conversion to achieve control on the secondary hook by the operating handle, so as to achieve heavy load at lower speed, light load at higher speed, big speed adjustment range, soft start and non-polar speed variation purposes. The utility model also has functions like overload protection and height limitation.
Description
One. technical field: the utility model relates to a kind of adhesion tower-crane, particularly relates to a kind of adhesion tower-crane auxiliary hook jack up unit.
Two. background technology: FZQ1380 belongs to 63 tons of adhesion tower-crane series; Its Main Feature be quick for installation, scope of work is wide, wind loading rating is strong, from characteristics such as heavy and light, lifting altitude are high, hoisting capacity is big; Be mainly used in construction operations such as 300～1000MW power plant boiler equipment and factory building lifting, also can be used for the field activity of the national economy all departments such as construction and other building, metallurgy, chemical industry of water power, nuclear power.This crane biggest lifting capacity in 7～22 meters scopes is 63 tons; When amplitude peak was 50 meters, the biggest lifting capacity was 18 tons; 162 meters of the maximum height of lift of main hook; The average lifting velocity 0～17.5m/min of main hoisting mechanism, the average lifting velocity 0～15.6m/min of auxiliary hoisting mechanism.
At present, the average lifting velocity of this crane auxiliary hook is 0～15.6m/min, is stepless change; Lean on the driver to come control rate fully through the size of coming control operation bar below potentiometer resistance from operating handle; But maximum speed also is 15.6m/mmin, and is slow excessively at the construction medium velocity, and if when in place, lean on crawl in place; Impulsive force is excessive, in place can be very not steady.
Three. the utility model content:
The utility model technical matters to be solved is: overcome the deficiency of prior art, provide that a kind of reasonable in design, speed adjustable range is big, heavy duty at a slow speed, the quick and safe adhesion tower-crane auxiliary hook jack up unit of underloading.
The technical scheme of the utility model is: a kind of adhesion tower-crane auxiliary hook jack up unit; Contain variable-frequency motor, reel, lifting rope, auxiliary hook and variable frequency control cabinet; In the said variable frequency control cabinet PLC controller and frequency converter are installed; The two links together, said PLC controller be connected from operating handle and signal controller, said frequency converter is connected with said variable-frequency motor.
In the said variable frequency control cabinet inlet wire reactor, relay, contactless switch, air switch and prerotator are installed.The dynamical axis of said variable-frequency motor is connected with the turning cylinder of said reel, and said lifting rope is wrapped on the said reel, and an end of said lifting rope is fixed on the said reel, and its other end is connected with said auxiliary hook.
The beneficial effect of the utility model is:
1, the utility model utilizes modern frequency conversion and automatic control technology; Through data acquisition and conversion; Utilization realizes the control to auxiliary hook from operating handle; Thereby realize heavy duty at a slow speed, underloading is quick, speed adjustable range is big, soft start and do not have the purpose of dead smooth speed change, has overload protection, defencive function such as highly spacing simultaneously.
2, the utility model install with change motor, wiring debugging, test run etc. with compared in the past more convenient; Can realize doubly speed for snap catch, empty hook and little tonnage, the control of speed judged magnitude of load through the torque detection of frequency converter, and use from operating handle and come control rate, reduce impulsive force when in place at a slow speed hanging piece.
When 3, the utility model starts from 0 fast gentle acceleration to needs speed, realize soft start, decelerate to zero during parking gradually, realize soft stopping-down, reduce physical shock, reduce the wearing and tearing and the damage of braking brake, increase stabilization of equipment performance.Realize stepless stepless speed control accent, 0～31.2 meter/minute of its speed range is thought just fast soon as required during operation; Think slow just slow; The acceleration and deceleration time is adjustable as required, and is satisfied to reach the driver, and the driver can see each speed constantly when oneself is operated clearly in addition.
4, the digital frequency converter of the utility model can be to overcurrent, overload, ground connection, overheated, short circuit, phase shortage, cross moment, owe various faults such as moment, hypervelocity and carry out real-time diagnosis; Will trip protection in case break down; Guarantee the safety of weight-lifting equipment; Provide failure code simultaneously, the indication user adopts corresponding treatment Countermeasures.
5, the utility model is in underloading fast during the shelves operation, if lifting surpasses the object more than 3 tons, frequency converter will send the instruction automatic compensation be heavy duty at a slow speed shelves carry out work, realize overspeed protection.
6, do not impact during the utility model zero-speed parking band-type brake, quick during underloading, improved efficient, at a slow speed, realize safe in operation during heavy duty, convenient in place, reduced cushion effect.
7, the utility model is reasonable in design, speed adjustable range is big, heavy duty at a slow speed, underloading is quick and safe, its Applicable scope is wider, is easy to promote, and has favorable economic benefit.
Four. description of drawings:
Fig. 1 is the structural representation of adhesion tower-crane auxiliary hook jack up unit.
Five. the specific embodiment:
Embodiment: referring to Fig. 1, among the figure, 1-variable frequency control cabinet, 2-be from operating handle and signal controller, the 3-variable-frequency motor.
Adhesion tower-crane auxiliary hook jack up unit contains variable-frequency motor 3, reel, lifting rope, auxiliary hook and variable frequency control cabinet 1, and wherein, the dynamical axis of variable-frequency motor 3 is connected with the turning cylinder of reel; Lifting rope is wrapped on the reel, and an end of lifting rope is fixed on the reel; Its other end is connected with auxiliary hook, and PLC controller and frequency converter are installed in the variable frequency control cabinet 1, and the two links together; The PLC controller be connected from operating handle and signal controller, frequency converter is connected with variable-frequency motor 3.
As required, in the variable frequency control cabinet 1 inlet wire reactor, relay, contactless switch, air switch and prerotator are installed also.
The utility model utilizes modern frequency conversion and automatic control technology; Through data acquisition and conversion; Utilization realizes the control to auxiliary hook from operating handle; Thereby realize heavy duty at a slow speed, underloading is quick, speed adjustable range is big, soft start, soft braking and do not have the purpose of dead smooth speed change, has overload protection, defencive function such as highly spacing simultaneously.
Claims (3)
1. adhesion tower-crane auxiliary hook jack up unit; Contain variable-frequency motor, reel, lifting rope, auxiliary hook and variable frequency control cabinet; It is characterized in that: in the said variable frequency control cabinet PLC controller and frequency converter are installed; The two links together, said PLC controller be connected from operating handle and signal controller, said frequency converter is connected with said variable-frequency motor.
2. adhesion tower-crane auxiliary hook jack up unit according to claim 1 is characterized in that: in the said variable frequency control cabinet inlet wire reactor, relay, contactless switch, air switch and prerotator are installed.
3. adhesion tower-crane auxiliary hook jack up unit according to claim 1 and 2; It is characterized in that: the dynamical axis of said variable-frequency motor is connected with the turning cylinder of said reel; Said lifting rope is wrapped on the said reel; And an end of said lifting rope is fixed on the said reel, and its other end is connected with said auxiliary hook.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120185000U CN202138963U (en) | 2011-06-03 | 2011-06-03 | Lifting device of attached tower crane secondary hook |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120185000U CN202138963U (en) | 2011-06-03 | 2011-06-03 | Lifting device of attached tower crane secondary hook |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202138963U true CN202138963U (en) | 2012-02-08 |
Family
ID=45550037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120185000U Expired - Fee Related CN202138963U (en) | 2011-06-03 | 2011-06-03 | Lifting device of attached tower crane secondary hook |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202138963U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261259A (en) * | 2014-09-30 | 2015-01-07 | 中国能源建设集团湖南省火电建设公司 | Secondary hook accelerating method for cylindrical cranes and attached cranes |
-
2011
- 2011-06-03 CN CN201120185000U patent/CN202138963U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261259A (en) * | 2014-09-30 | 2015-01-07 | 中国能源建设集团湖南省火电建设公司 | Secondary hook accelerating method for cylindrical cranes and attached cranes |
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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: 20120208 Termination date: 20130603 |