CN107055329A - A kind of tower crane lifting method of controlling security and system - Google Patents
A kind of tower crane lifting method of controlling security and system Download PDFInfo
- Publication number
- CN107055329A CN107055329A CN201710279891.2A CN201710279891A CN107055329A CN 107055329 A CN107055329 A CN 107055329A CN 201710279891 A CN201710279891 A CN 201710279891A CN 107055329 A CN107055329 A CN 107055329A
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- China
- Prior art keywords
- speed
- zero
- brake
- band
- motor
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/22—Control systems or devices for electric drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
Abstract
The present invention discloses a kind of tower crane lifting method of controlling security and system, tower crane lifting method of controlling security is detected in real time using speed detector to lifting motor speed, the torque of motor speed controlled motor and speed that control device is detected in real time according to speed detector, realize that controlled motor output loading torque hovers lift heavy in the air in the case of the absolute zero-speed of motor and brake not band-type brake, i.e., non-brake zero-speed hovering；When performing band-type brake control, control device performs band-type brake action, i.e. zero-speed band-type brake in the case where detecting motor speed for absolute zero-speed,.The present invention proposes zero-speed band-type brake and the non-brake Hovering control technology of zero-speed, and slowed down band-type brake number of times, so as to reduce braking pad wear, improves tower crane lifting control security.
Description
Technical field
The present invention relates to a kind of tower crane lifting method of controlling security and system, belong to tower crane technical field.
Background technology
The hoist brake control logic of existing tower crane frequency conversion lift controlling system is generally using band-type brake immediately when stopping
Control mode, band-type brake thresholding bar is stopped particular by band-type brake frequency threshold, band-type brake current threshold, band-type brake threshold voltage etc. is set
Part, when control device receives stop signal, control device controlled motor carries out retarding braking process.Device detection to be controlled
When reaching band-type brake threshold threshold condition to described frequency, electric current, voltage, control brake performs band-type brake action, so as to realize
Anti-slip hook operation during band-type brake.Because it is by controlling hoist brake to embrace according to stop signal and the frequency, electric current, voltage
Lock is acted, and there are the following problems in actual use：
1st, band-type brake frequency threshold is set, band-type brake action is performed when motor speed reaches this band-type brake frequency threshold, it is now electric
Machine speed is not absolute zero-speed, and braking pad wear can be caused during band-type brake；
2nd, setting band-type brake frequency threshold, band-type brake current threshold, three stopping band-type brake conditions of band-type brake threshold voltage, when reaching this
During condition, band-type brake action is immediately performed, although can effectively prevent from slipping hook, braking pad wear can not be prevented effectively from.
However, braking pad wear easily causes raising suspension hook to slip hook, security incident is caused, safety coefficient is low.
The content of the invention
In view of the above-mentioned problems of the prior art, the present invention provides a kind of tower crane lifting method of controlling security and system,
Zero-speed band-type brake and the non-brake Hovering control technology of zero-speed, deceleration band-type brake number of times are proposed, so as to reduce braking pad wear, tower crane is improved
Lift control security.
To achieve these goals, a kind of tower crane lifting method of controlling security that the present invention is used, is filled using velocity measuring
Put and lifting motor speed is detected in real time, the motor speed that control device is detected in real time according to speed detector controls electricity
Machine torque and speed, realize that controlled motor output loading torque will be hung in the case of the absolute zero-speed of motor and brake not band-type brake
Resuspension is parked in the air, i.e., non-brake zero-speed hovering；When performing band-type brake control, control device is absolute detecting motor speed
In the case of zero-speed, band-type brake action, i.e. zero-speed band-type brake are just performed.Wherein, the time t of non-brake zero-speed hovering can be according to user's need
Setting is asked, after user sets non-brake zero-speed hovering time t, control system will be held after non-brake zero-speed hovering time t
Row band-type brake is acted.
A kind of tower crane lifting safety control system, including raising actuation means, control device, variable frequency drive controller, speed
Spend detection means, lifting motor, lifting speed reducing, hoist brake, hoisting drum, hoist rope, raising line system pulley system
System and raising suspension hook, raising actuation means are used to give lift control signal；Control device is the core of control system, is used for
Receive lift control signal and send raising operation control command；Variable frequency drive controller is used to perform control command, control electricity
The operation of machine；Speed detector is used for the speed of service for detecting motor；Lifting motor provides load running power, driving load
Operation；Lifting speed reducing is power transmission mechanism, according to corresponding speed reducing ratio by the output speed and torque transmission of motor to negative
Carry；Hoisting drum is used for retractable volume steel wire rope；Hoist rope is used to connect hoisting drum and raising suspension hook, plays and leads
Draw the effect of suspension hook up and down motion；Raising line system pulley system is used to wind supporting steel-cable, plays the direction that changes power and big
Small effect；Raising suspension hook is used for the effect of suspended load；The motor speed that control device is detected in real time according to speed detector
Controlled motor torque and speed are spent, the controlled motor output loading in the case of the absolute zero-speed of motor and brake not band-type brake is realized
Torque hovers lift heavy in the air, i.e., non-brake zero-speed hovering；When performing band-type brake control, control device is detecting motor speed
In the case of spending for absolute zero-speed, band-type brake action, i.e. zero-speed band-type brake are just performed.
Preferably, the speed detector is raising encoder.
Preferably, the time t of non-brake zero-speed hovering is set according to user's request, when user sets non-brake zero-speed hovering
After time t, control system will perform band-type brake action after non-brake zero-speed hovering time t.
Compared with prior art, the present invention is detected in real time using speed detector to lifting motor speed, is controlled
The torque of motor speed controlled motor and speed that device is detected in real time according to speed detector, realize in the absolute zero-speed of motor and
Controlled motor output loading torque does not hover lift heavy in the air to brake in the case of band-type brake, i.e., non-brake zero-speed hovering.When
When performing band-type brake control, control device performs band-type brake action, i.e., zero in the case where detecting motor speed for absolute zero-speed,
Fast band-type brake.Security control to tower crane lifting is realized by the hovering of non-brake zero-speed and zero-speed band-type brake control technology, so as to reach
Reduce the effect of braking pad wear and anti-slip hook.Therefore with following advantage：
1st, motor speed is detected in real time using speed detector, control device is real-time according to speed detector
The motor speed controlled motor torque of detection and speed, the degree of accuracy are high；
2nd, non-brake zero-speed hovering is realized, slowed down band-type brake number of times, so as to reduce braking pad wear；
3rd, zero-speed band-type brake is realized, it is to avoid brake(-holder) block caused by band-type brake action is carried out in the case where motor is with certain speed rotational case
Wear phenomenon, reduces braking pad wear, improves the brake(-holder) block life-span；
4th, propose that, to adapt to the wider demand of user, the time t of non-brake zero-speed hovering can be set according to user's request
It is fixed.After user sets non-brake zero-speed hovering time t, control system will be performed after non-brake zero-speed hovering time t and embraced
Lock is acted.
Embodiment
The invention will be further described below.
A kind of tower crane lifting method of controlling security, this method is carried out real-time using speed detector to lifting motor speed
Detection, the torque of motor speed controlled motor and speed that control device is detected in real time according to speed detector are realized in motor
Controlled motor output loading torque does not hover lift heavy in the air in the case of band-type brake for absolute zero-speed and brake, i.e., and non-brake zero
Speed hovering；When performing band-type brake control, control device just performs band-type brake in the case where detecting motor speed for absolute zero-speed
Action, i.e. zero-speed band-type brake.Wherein, the time t of non-brake zero-speed hovering can be set according to user's request, when user sets non-brake
After zero-speed hovering time t, control system will perform band-type brake action after non-brake zero-speed hovering time t.Pass through non-brake zero
Speed hovering and zero-speed band-type brake control technology realize the security control to tower crane lifting, so as to reach reduction braking pad wear and anti-slip
The effect of hook, improves security.
A kind of tower crane lifting safety control system, including raising actuation means, control device, variable frequency drive controller, speed
Spend detection means, lifting motor, lifting speed reducing, hoist brake, hoisting drum, hoist rope, raising line system pulley system
System and raising suspension hook, raising actuation means are used to give lift control signal；Control device is the core of control system, is used for
Receive lift control signal and send raising operation control command；Variable frequency drive controller is used to perform control command, control electricity
The operation of machine；Speed detector is used for the speed of service for detecting motor；Lifting motor provides load running power, driving load
Operation；Lifting speed reducing is power transmission mechanism, according to corresponding speed reducing ratio by the output speed and torque transmission of motor to negative
Carry；Hoisting drum is used for retractable volume steel wire rope；Hoist rope is used to connect hoisting drum and raising suspension hook, plays and leads
Draw the effect of suspension hook up and down motion；Raising line system pulley system is used to wind supporting steel-cable, plays the direction that changes power and big
Small effect；Raising suspension hook is used for the effect of suspended load；The motor speed that control device is detected in real time according to speed detector
Controlled motor torque and speed are spent, the controlled motor output loading in the case of the absolute zero-speed of motor and brake not band-type brake is realized
Torque hovers lift heavy in the air, i.e., non-brake zero-speed hovering；When performing band-type brake control, control device is detecting motor speed
In the case of spending for absolute zero-speed, band-type brake action, i.e. zero-speed band-type brake are just performed.
Preferably, the speed detector is raising encoder.
Preferably, the time t of non-brake zero-speed hovering is set according to user's request, when user sets non-brake zero-speed hovering
After time t, control system will perform band-type brake action after non-brake zero-speed hovering time t.
When the given raising of raising actuation means signal out of service, control device is according to the signal out of service received
Controlled motor performs process out of service of slowing down.In deceleration stopped process is performed, control device is examined in real time according to detection means
The torque of the motor speed controlled motor of survey and speed.When it is zero to receive real-time detection speed, control device controlled motor
Lift heavy load is hovered over control by output loading torque, does not perform brake action, i.e., non-brake zero-speed hovering.This
In, to adapt to the wider demand of user, the time t of non-brake zero-speed hovering can be set according to user's request.When user sets
After fixed non-brake zero-speed hovering time t, control system will perform band-type brake action after non-brake zero-speed hovering time t.When holding
When row band-type brake is controlled, control device performs band-type brake action, i.e. zero-speed in the case where detecting motor speed for absolute zero-speed,
Band-type brake.Security control to tower crane lifting is realized by the hovering of non-brake zero-speed and zero-speed band-type brake control technology, subtracted so as to reach
The effect of braking pad wear and anti-slip hook, improves security less.
Claims (5)
1. a kind of tower crane lifting method of controlling security, it is characterised in that tower crane lifting method of controlling security is filled using velocity measuring
Put and lifting motor speed is detected in real time, the motor speed that control device is detected in real time according to speed detector controls electricity
Machine torque and speed, realize that controlled motor output loading torque will be hung in the case of the absolute zero-speed of motor and brake not band-type brake
Resuspension is parked in the air, i.e., non-brake zero-speed hovering；When performing band-type brake control, control device is absolute detecting motor speed
In the case of zero-speed, band-type brake action, i.e. zero-speed band-type brake are just performed.
2. a kind of tower crane lifting method of controlling security according to claim 1, it is characterised in that non-brake zero-speed hovering
Time, t was set according to user's request, and after user sets non-brake zero-speed hovering time t, control system will be non-brake zero
Band-type brake action is performed after fast hovering time t.
3. a kind of tower crane lifting safety control system, it is characterised in that including raising actuation means, control device, frequency conversion drive
Controller, speed detector, lifting motor, lifting speed reducing, hoist brake, hoisting drum, hoist rope, raising line
It is pulley system and raising suspension hook, raising actuation means are used to give lift control signal；Control device is control system
Core, for receiving lift control signal and sending raising operation control command；Variable frequency drive controller is used to perform control life
Order, the operation of controlled motor；Speed detector is used for the speed of service for detecting motor；Lifting motor provides load running and moved
Power, driving load operation；Lifting speed reducing is power transmission mechanism, according to corresponding speed reducing ratio is by the output speed of motor and turns
Square is driven to load；Hoisting drum is used for retractable volume steel wire rope；Hoist rope is used to connect hoisting drum and raising suspension hook
Get up, play a part of traction suspension hook and move up and down；Raising line system pulley system is used to wind supporting steel-cable, plays change power
Direction and size effect；Raising suspension hook is used for the effect of suspended load；Control device is examined in real time according to speed detector
The motor speed controlled motor torque of survey and speed, realize and control electricity in the case of the absolute zero-speed of motor and brake not band-type brake
Machine output loading torque hovers lift heavy in the air, i.e., non-brake zero-speed hovering；When performing band-type brake control, control device is in inspection
Motor speed is measured in the case of absolute zero-speed, just to perform band-type brake action, i.e. zero-speed band-type brake.
4. a kind of tower crane lifting safety control system according to claim 3, it is characterised in that the speed detector
For raising encoder.
5. a kind of tower crane lifting safety control system according to claim 3 or 4, it is characterised in that non-brake zero-speed is hanged
The time t stopped is set according to user's request, and after user sets non-brake zero-speed hovering time t, control system will be in non-system
Band-type brake action is performed after dynamic zero-speed hovering time t.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710279891.2A CN107055329A (en) | 2017-04-26 | 2017-04-26 | A kind of tower crane lifting method of controlling security and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710279891.2A CN107055329A (en) | 2017-04-26 | 2017-04-26 | A kind of tower crane lifting method of controlling security and system |
Publications (1)
| Publication Number | Publication Date |
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| CN107055329A true CN107055329A (en) | 2017-08-18 |
Family
ID=59603691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710279891.2A Pending CN107055329A (en) | 2017-04-26 | 2017-04-26 | A kind of tower crane lifting method of controlling security and system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108529456A (en) * | 2018-06-12 | 2018-09-14 | 徐州建机工程机械有限公司 | A kind of novel tower crane moment safety control system and method |
| CN113682971A (en) * | 2020-03-06 | 2021-11-23 | 杭州国电大力机电工程有限公司 | Braking method for preventing hook slipping of hoisting mechanism of cable crane and cable crane |
| CN115092838A (en) * | 2022-06-21 | 2022-09-23 | 张家港市申联建设机械有限公司 | Tower crane operation parameter control method, system, device and storage medium |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108529456A (en) * | 2018-06-12 | 2018-09-14 | 徐州建机工程机械有限公司 | A kind of novel tower crane moment safety control system and method |
| CN113682971A (en) * | 2020-03-06 | 2021-11-23 | 杭州国电大力机电工程有限公司 | Braking method for preventing hook slipping of hoisting mechanism of cable crane and cable crane |
| CN113682971B (en) * | 2020-03-06 | 2023-06-30 | 杭州国电大力机电工程有限公司 | Braking method for hook slipping prevention protection of cable machine lifting mechanism and cable machine |
| CN115092838A (en) * | 2022-06-21 | 2022-09-23 | 张家港市申联建设机械有限公司 | Tower crane operation parameter control method, system, device and storage medium |
| CN115092838B (en) * | 2022-06-21 | 2023-09-15 | 张家港市申联建设机械有限公司 | Tower crane operation parameter control method, system, device and storage medium |
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Application publication date: 20170818 |