CN209098046U - Four rope crane location closed loop of one kind chases after rope system - Google Patents
Four rope crane location closed loop of one kind chases after rope system Download PDFInfo
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- CN209098046U CN209098046U CN201821993080.5U CN201821993080U CN209098046U CN 209098046 U CN209098046 U CN 209098046U CN 201821993080 U CN201821993080 U CN 201821993080U CN 209098046 U CN209098046 U CN 209098046U
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Abstract
The rope crane location closed loop of one kind four of the utility model chases after rope system, comprising: PLC control unit, two reels and two reel control units；PLC control unit includes: PLC position module and PLC control module；Reel control unit includes: frequency converter, hoisting motor and multi-turn absolute value encoder；Multi-turn absolute value encoder is arranged in reel tail portion and the position signal of reel is sent to PLC position module, PLC control module reading position signal and the real-time revolving speed of frequency converter feedback and are compared the position signal of two reels real-time torque, the revolving speed that control instruction promoted or reduced corresponding hoisting motor is sent to corresponding frequency converter if position difference is greater than threshold value, and then the revolving speed for the reel that hoisting motor is driven is adjusted, achieve the purpose that chase after rope.This system can automatically track the length difference of detection four wirerope of crane, realize wirerope absolute position of making uniform automatically in motion process.
Description
Technical field
The utility model belongs to crane technical field, is related to four rope crane location closed loop of one kind and chases after rope system.
Background technique
Four rope cranes are a kind of for lifting, the equipment of carrying heavy goods, are indispensable a kind of in production process
Weight haulage equipment.For existing four ropes crane all respectively there are two cable drum, each reel winds two wirerope respectively,
Four wirerope connect the tackling system of suspension hook composition on cantilever crane top jointly, make rising for rise and fall for dragging weight
Elevator row.In the process of running, four wirerope carry whole operating weights.Since four wirerope are by two sets of reels
Operating mechanism driving, then just will appear error during raising and lowering, daily repeatedly in thousands of operations, these
Error will add up and be amplified, and after there is error, four ends of wirerope, which just will appear, to be uneven, serious feelings
Condition just will appear weighting, security risk occurs.After there is rope difference, usual driver can stop immediately and carry out leveling work manually
Make, this not only influences working efficiency, and there is also great security risks.
Utility model content
The purpose of the utility model is to provide four rope crane location closed loops of one kind to chase after rope system, can automatically track and detect
The length difference of four wirerope of heavy-duty machine realizes wirerope absolute position of making uniform automatically in motion process.
The utility model provides four rope crane location closed loop of one kind and chases after rope system, comprising: PLC control unit, two volumes
Cylinder and two reel control units；The PLC control unit includes: PLC position module and PLC control module；
Reel control unit includes: frequency converter, hoisting motor and multi-turn absolute value encoder；Multi-turn absolute value encoder is set
It sets and the position signal of reel is sent to PLC position module, PLC control module reading position signal and frequency converter in reel tail portion
The real-time revolving speed of feedback and is compared the position signal of two reels real-time torque, if position difference is greater than threshold value
The revolving speed that control instruction promoted or reduced corresponding hoisting motor is sent to corresponding frequency converter, and then adjusts hoisting motor and is driven
The revolving speed of dynamic reel achievees the purpose that chase after rope.
It is chased after in rope system in the four rope crane location closed loops of the utility model, the PLC control unit and two frequency conversions
It is connected between device by Industrial Ethernet.
It is chased after in rope system in the four rope crane location closed loops of the utility model, the system is additionally provided with brake and alarm
Device, PLC control module read the real-time revolving speed of two frequency converters feedback, and judge whether overspeed, and PLC is controlled if hypervelocity
Molding block sends halt instruction to frequency converter and brake, and sends alarm command to alarm.
It is chased after in rope system in the four rope crane location closed loops of the utility model, PLC control module reads two frequency converters
The real-time torque of feedback, and judges whether two real-time torques are equal, and the case where if there is moment unbalance and torque does not have
More than 5% or more of setting torque, then on the basis of guaranteeing that two hoisting motors are synchronized, increase the power of the small frequency converter of torque
Square makes the 95% of another frequency converter torque of its torque；If the torque of any frequency converter be more than setting torque 5% with
On, then PLC control module sends halt instruction to frequency converter and brake, and sends alarm command to alarm.
It is chased after in rope system in the four rope crane location closed loops of the utility model, the reel control unit further includes and rises
The speed reducer that lifting motor is connected, the hoisting motor are rotated by the deceleration rear-guard movable reel of speed reducer.
One kind four of the utility model crane location closed loop of restricting chases after rope system, with advanced Programmable control technology,
Frequency converter and absolute value encoder replace traditional electric controling mode, during four rope crane hook operations, with travelling
The principle and physical significance of coordinate method automatically track the length difference of detection four wirerope of crane, realize in motion process
Automatic wirerope absolute position of making uniform, has apparent practical value.The work effect of four rope cranes can be improved using this system
Rate reduces the failure rate of crane, reduces maintenance cost, easy to operate, to realize full-automatic operation, reduces artificial behaviour
Make accident, it is reliable for operation.
Detailed description of the invention
Fig. 1 is that the rope crane location closed loop of one kind four of the utility model chases after the block diagram of rope system.
Specific embodiment
As shown in Figure 1, one kind four of the utility model is restricted, crane location closed loop chases after rope system, comprising: PLC control is single
Member, two reels 5 and two reel control units.The PLC control unit includes: PLC control module 1 and the position PLC mould
Block 2.
Reel control unit includes: frequency converter 3, hoisting motor 4 and multi-turn absolute value encoder 6；Multi-turn absolute encoder
Device 6 is arranged in 5 tail portion of reel and the position signal of reel 5 is sent to PLC position module 2,1 reading position of PLC control module letter
Number and frequency converter 3 feed back real-time revolving speed, real-time torque and the position signal of two reels 5 is compared, if alternate position spike
Value is greater than threshold value and then sends the revolving speed that control instruction promoted or reduced corresponding hoisting motor 4 to corresponding frequency converter 3, and then adjusts
The revolving speed for the reel 5 that section hoisting motor 4 is driven, achievees the purpose that chase after rope.
When it is implemented, being connected between the PLC control unit and two frequency converters 3 by Industrial Ethernet.PLC control is single
The PLC control module 1 of member reads the position that real-time speed, real-time torque and the multi-turn absolute value encoder 6 that frequency converter 3 is fed back are fed back
Confidence number judges which reel is advanced in the process of running or falls behind by calculating the real time position of the two winding drum compared with, such as
The backward or advanced position of fruit is greater than 10mm, then PLC control unit will be under the premise of frequency conversion moment equilibrium, to corresponding
Frequency converter 3 sends the revolving speed that control instruction promotes slow hoisting motor 4, reaches position balance, and arrival chases after rope
Purpose.
The system is additionally provided with brake 7 and alarm 9, in order to guarantee that two reels are all in raising or dropping process
It is moved according to the speed that PLC control unit gives, it is ensured that overspeed situation do not occur, PLC control module 1 reads two frequency conversions
The real-time revolving speed that device 3 is fed back, and judges whether overspeed, and PLC control module 1 is to frequency converter 3 and brake 7 if hypervelocity
Halt instruction is sent, and sends alarm command to alarm 9.
Four of two reels 5 ropes, one suspension hook of connection simultaneously, is lifted weight by suspension hook, if two reels 5
The moment values of hoisting motor 4 are uneven, that just illustrates that mechanism there is a problem, timely shutdown is needed to handle.Therefore, pass through PLC
Control module 1 reads the real-time torque of two frequency converters 3 feedback, and judges whether two real-time torques are equal, if there is power
The unbalanced situation of square and torque are not above 5% or more of setting torque, then are guaranteeing the synchronized basis of two hoisting motors 4
On, increase the torque of the small frequency converter 3 of torque, makes the 95% of another frequency converter torque of its torque；If any frequency conversion
The torque of device 3 is more than 5% or more of setting torque, then PLC control module 1 sends halt instruction to frequency converter 3 and brake 7,
And alarm command is sent to alarm 9.
The reel control unit further includes the speed reducer 8 being connected with electric 4 machines of raising, and the hoisting motor 4 is by subtracting
The deceleration rear-guard movable reel 5 of fast machine 8 rotates.
The above is only the preferred embodiment of the present invention, the thought being not intended to limit the utility model, it is all
Within the spirit and principles of the utility model, it is practical new to should be included in this for any modification, equivalent replacement, improvement and so on
Within the protection scope of type.
Claims (5)
1. one kind four restrict crane location closed loop chase after rope system characterized by comprising PLC control unit, two reels and
Two reel control units；The PLC control unit includes: PLC position module and PLC control module；
Reel control unit includes: frequency converter, hoisting motor and multi-turn absolute value encoder；The setting of multi-turn absolute value encoder exists
The position signal of reel is sent to PLC position module, PLC control module reading position signal and frequency converter feedback by reel tail portion
Real-time revolving speed, real-time torque and the position signal of two reels is compared, to phase if position difference is greater than threshold value
The frequency converter answered sends the revolving speed that control instruction promoted or reduced corresponding hoisting motor, and then adjusts what hoisting motor was driven
The revolving speed of reel achievees the purpose that chase after rope.
2. four ropes crane location closed loop as described in claim 1 chases after rope system, which is characterized in that the PLC control unit
It is connect between two frequency converters by Industrial Ethernet.
3. four ropes crane location closed loop as described in claim 1 chases after rope system, which is characterized in that the system is additionally provided with system
Dynamic device and alarm, PLC control module read the real-time revolving speed of two frequency converters feedback, and judge whether overspeed, if
Then PLC control module to frequency converter and brake sends halt instruction to hypervelocity, and sends alarm command to alarm.
4. four ropes crane location closed loop as claimed in claim 3 chases after rope system, which is characterized in that PLC control module is read
The real-time torque of two frequency converters feedback, and judges whether two real-time torques are equal, the case where if there is moment unbalance
And torque is not above 5% or more of setting torque, then on the basis of guaranteeing that two hoisting motors are synchronized, it is small to increase torque
The torque of frequency converter makes the 95% of another frequency converter torque of its torque；If the torque of any frequency converter is more than setting
5% or more of torque, then PLC control module sends halt instruction to frequency converter and brake, and sends alarm to alarm and refer to
It enables.
5. four ropes crane location closed loop as described in claim 1 chases after rope system, which is characterized in that the reel control unit
It further include the speed reducer being connected with hoisting motor, the hoisting motor is rotated by the deceleration rear-guard movable reel of speed reducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821993080.5U CN209098046U (en) | 2018-11-29 | 2018-11-29 | Four rope crane location closed loop of one kind chases after rope system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821993080.5U CN209098046U (en) | 2018-11-29 | 2018-11-29 | Four rope crane location closed loop of one kind chases after rope system |
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| Publication Number | Publication Date |
|---|---|
| CN209098046U true CN209098046U (en) | 2019-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821993080.5U Active CN209098046U (en) | 2018-11-29 | 2018-11-29 | Four rope crane location closed loop of one kind chases after rope system |
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| CN (1) | CN209098046U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112612227A (en) * | 2020-12-09 | 2021-04-06 | 合肥中科离子医学技术装备有限公司 | Control method of particle rotating treatment room rotating rack |
| CN114084799A (en) * | 2021-11-22 | 2022-02-25 | 徐州建机工程机械有限公司 | Triple protection system and method for multi-lifting synchronous safety control of tower crane |
| CN114084802A (en) * | 2021-11-19 | 2022-02-25 | 徐州建机工程机械有限公司 | Double-closed-loop master-slave synchronous control system for multiple mechanisms of tower crane |
-
2018
- 2018-11-29 CN CN201821993080.5U patent/CN209098046U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112612227A (en) * | 2020-12-09 | 2021-04-06 | 合肥中科离子医学技术装备有限公司 | Control method of particle rotating treatment room rotating rack |
| CN114084802A (en) * | 2021-11-19 | 2022-02-25 | 徐州建机工程机械有限公司 | Double-closed-loop master-slave synchronous control system for multiple mechanisms of tower crane |
| WO2023088449A1 (en) * | 2021-11-19 | 2023-05-25 | 徐州建机工程机械有限公司 | Multi-mechanism double-closed-loop master-slave synchronous control system for tower crane |
| CN114084799A (en) * | 2021-11-22 | 2022-02-25 | 徐州建机工程机械有限公司 | Triple protection system and method for multi-lifting synchronous safety control of tower crane |
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