CN112374373A - Windproof control system and method for crane - Google Patents
Windproof control system and method for crane Download PDFInfo
- Publication number
- CN112374373A CN112374373A CN202011349232.XA CN202011349232A CN112374373A CN 112374373 A CN112374373 A CN 112374373A CN 202011349232 A CN202011349232 A CN 202011349232A CN 112374373 A CN112374373 A CN 112374373A
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- Prior art keywords
- crane
- moving speed
- speed sensor
- wind
- control system
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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
- B66C13/48—Automatic control of crane drives for producing a single or repeated working cycle; Programme control
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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
- B66C13/16—Applications of indicating, registering, or weighing devices
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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
- B66C13/40—Applications of devices for transmitting control pulses; Applications of remote control devices
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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
- B66C15/00—Safety gear
- B66C15/06—Arrangements or use of warning devices
- B66C15/065—Arrangements or use of warning devices electrical
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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
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/18—Travelling gear incorporated in or fitted to trolleys or cranes with means for locking trolleys or cranes to runways or tracks to prevent inadvertent movements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The invention relates to the technical field of cranes, in particular to a windproof control system and method for a crane. The wind speed sensor is used for detecting the moving speed of the crane, and the first braking device, the second braking device, the wind speed sensor and the moving speed sensor are in signal connection with the processor. By adopting the windproof system and the windproof method, intelligent sensing and multiple braking can be realized.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a windproof control system and method for a crane.
Background
With the vigorous development of port loading and unloading transportation industry, large-scale port equipment plays more and more important roles in port modern production, such as a portal crane and a portal crane, but due to the high structure and the large windward area, the large-scale port equipment is easily attacked by wind power when typhoon or sudden gust occurs, collapse occurs, and casualties and huge economic loss are caused.
The prior art crane wind prevention is generally only provided with a wind prevention brake, such as a wheel-side brake, when a strong wind exists, a worker is required to actively open the wind prevention brake to further play a certain wind prevention function, but the prior art crane wind prevention brake has the following defects:
firstly, in the actual use process, the brake can not be changed according to the field working condition, and the theoretical design brake effect can not be realized;
and secondly, the wind-proof early warning function, multiple braking selection and linkage management are not provided, so that the working requirement of field safety management improvement cannot be met.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the windproof control system and the windproof control method for the crane can realize intelligent sensing and multiple braking.
The technical scheme adopted by the invention is as follows: the wind-proof control system for the crane comprises the crane, wherein the crane is provided with a first braking device, the wind-proof control system further comprises a processor, a second braking device arranged on the crane, an air speed sensor used for detecting the air speed and a moving speed sensor used for detecting the moving speed of the crane, and the first braking device, the second braking device, the air speed sensor and the moving speed sensor are in signal connection with the processor.
Preferably, the device further comprises an alarm device which is in signal connection with the processor.
Preferably, the brake system further comprises a detection device for detecting the state of the second brake device, wherein the detection device is in signal connection with the processor.
Preferably, the second braking device is an electric wheel side brake.
Preferably, the system further comprises a wireless communication module which is in signal connection with the processor.
Preferably, the device further comprises an image acquisition device which is in signal connection with the processor.
A wind-proof control method for a crane comprises the following steps:
s1, detecting the wind speed by a wind speed sensor, and if the detected wind speed is less than X-level wind power, continuing to detect; if the wind speed is within the X-level wind speed range, jumping to the next step; if the wind speed is greater than or equal to the Y-level wind speed, jumping to step S3;
s2, controlling an alarm device to give an alarm, and then returning to the step S1 to continue detection;
s3, controlling an alarm device to give an alarm, controlling the crane to stop working, simultaneously controlling a first brake device to start, then controlling a moving speed sensor to work, detecting the moving speed, and then jumping to the next step;
s4, if the detected moving speed is less than Zm/min, directly starting all the second braking devices; and if the detected moving speed is greater than or equal to Zm/min, the second braking device needs to be controlled to work step by step.
Preferably, the step S1 further requires detecting the wind direction, and the step S4 of controlling the second braking device to operate step by step is: the second brake device is activated in order from far to near according to the wind direction detected in step S1.
Preferably, before detecting the moving speed in step S3, it is also necessary to determine whether a moving speed sensor is installed, and if the moving speed sensor is installed, the moving speed is normally detected; if the moving speed sensor is not installed, the second braking device is started after the first braking device is controlled to be started for 3-5 seconds.
Compared with the prior art, the invention has the following advantages by adopting the structure method:
the wind speed is detected through the wind speed sensor, the moving speed is detected through the moving speed sensor, then the state of the crane is judged according to the information, and then the first braking device and the second braking device are respectively controlled through the processor, so that intelligent wind prevention is realized.
When a plurality of sets of second braking devices are arranged, dynamic emergency braking is implemented in an emergency state, and the point-by-point paired release function is provided, so that impact on equipment during emergency braking can be reduced.
And remote monitoring is used as an optional function, and the working state of the brake can be remotely monitored by adding a wireless communication module, such as a mobile terminal, a PC terminal and the like. The safety management work efficiency is improved, and the labor cost is reduced.
Drawings
FIG. 1 is a connection block diagram of the windproof control system of the crane according to the invention.
Detailed Description
The present invention will be further described below by way of specific embodiments, but the present invention is not limited to the following specific embodiments.
The first embodiment is as follows: the utility model provides a control system is prevent wind to hoist for 25T shipyard portal crane, it includes treater, first arresting gear, second arresting gear, wind speed sensor, moves fast sensor, alarm device, detection device, wireless communication module and image acquisition device, wherein:
the first brake device is the crane self-provided with a brake device, namely a brake device, so the first brake device is not expanded in detail;
the second braking device is an electric wheel side brake arranged on a wheel of the crane, a motor is used as a power source, hydraulic pressure is not needed to be used as the power source, the electric braking efficiency is high, the braking force is stable, and the defect of aging of a hydraulic oil pipe is avoided; the electric wheel-side brake is also provided with a manual release mechanism, namely, when the power is cut off, the electric wheel-side brake can be opened by manual force, the manual release mechanism comprises a motor protective cover and a handle, the motor protective cover and the handle can be detachably arranged on the motor, and when the manual release is not needed, the protective cover can be arranged at the tail part of the motor to protect the motor; when manual release is needed, the protective cover is manually detached, the handle is arranged on a rotating shaft at the tail part of the motor, and the rotating shaft of the motor is driven to rotate by shaking the handle, so that the clamp is loosened;
the wind speed sensor, also called an anemometer, is installed on the crane or around the crane and is mainly used for detecting the wind speed and the wind direction around the crane, and the prior art is widely sold in the market and is not developed in detail;
the moving speed sensor can be carried by the crane or mounted at a later stage, is mainly used for detecting the moving speed of the crane, is a conventional product in the prior art, and therefore the specific structure and the working principle of the moving speed sensor are not described in detail;
the alarm device can be used for sound alarm, light alarm or sound-light alarm, is arranged in the cab and is mainly used for reminding a driver;
the wireless communication module can adopt communication modules such as 3G, 4G, 5G, WIFI and the like to realize a wireless communication transmission function;
the image acquisition device can adopt a common camera to realize video monitoring;
the processor is controlled by adopting a PLC (programmable logic controller), which is also conventional in industrial control and is not developed in detail;
and can also include a total control room, the signal that will gather such as wind speed sensor, the signal that moves speed sensor, image acquisition device, detecting device etc. through wireless communication module transmits to total control room, and the user can directly carry out remote monitoring at total control room, then remote control, also can set up in total control room with the treater promptly in other words, realizes automatic control.
Pre-retrofit data pairs such as table 1 below:
the windproof effect of the crane additionally provided with the electric wheel side brake is better, the windproof effect is improved by about 17% by additionally arranging one set, and the windproof effect is improved by about 33% by additionally arranging two sets.
In addition, the present embodiment has a control method for controlling the operation of the motor,
s1, acquiring the wind speed detected by the wind speed sensor by the processor, and if the acquired wind speed is less than 6-level wind power, namely the wind speed is less than 10.8m/S, continuing to acquire the wind speed; if the collected wind speed is in the 6-level wind speed range, namely the wind speed is between 10.8 and 13.8m/s, jumping to the next step; if the collected wind speed is greater than or equal to 7-level wind power, namely the wind speed is greater than or equal to 13.8m/S, jumping to step S3;
s2, controlling an alarm device arranged in a cab to give an alarm, reminding a driver that the wind power is higher than 6 levels at the moment, enabling the driver to autonomously judge whether braking is needed to stop the crane or not, starting an electric wheel brake, and returning to the step S1 to continue detection;
s3, controlling an alarm device installed in a cab to give an alarm, controlling the crane to stop working (namely controlling the crane to stop lifting), simultaneously controlling a first brake device to start, starting first heavy braking, acquiring the moving speed detected by a moving speed sensor, and then jumping to the next step;
s4, if the collected moving speed is less than 10m/min, directly starting all the second braking devices, and directly starting all the second braking devices to perform emergency stop because the moving speed is not fast; if the collected moving speed is more than or equal to 10m/min, a certain moving speed is indicated, the second braking devices are required to be controlled to work step by step, namely the second braking devices are started one by one according to the wind direction, namely a pair of second braking devices far away from the wind direction are started first, namely when the crane moves forwards, an electric wheel side brake arranged on a wheel at the rear of the crane is started first, then the adjacent electric wheel side brakes are started at a certain interval, and the electric wheel side brake on the wheel at the forefront in the moving direction of the crane is also started.
The second embodiment has the main structure and the control method similar to those of the first embodiment, but the specific installation number is different from the type of the installed crane, and the specific installation number is MG (350+350) -41m-40m gantry crane, the weight of the gantry crane is: the unloaded dead weight is about 750T, and the rated lifting capacity is 700T; and (3) modifying a driven wheel: the diameter of the wheel is 500mm, and the width of the wheel is 200 mm; selecting the type of an electric wheel side brake: DZL40, rated clamping force of 65-70KN and rated static friction force of 55-60 KN; and a comparison of the full load before and after retrofit as in table 2 below:
TABLE 2
A comparison of the unloaded conditions before and after the retrofit is shown in table 3 below:
TABLE 3
It can also be seen from the above tables 2 and 3 that the windproof effect is greatly improved after the windproof system of the present application is installed and the windproof control method of the present invention is adopted.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The utility model provides a control system is prevent wind to hoist, it includes the hoist, be equipped with first arresting gear on the hoist, its characterized in that: the wind speed sensor is used for detecting the moving speed of the crane, and the first braking device, the second braking device, the wind speed sensor and the moving speed sensor are in signal connection with the processor.
2. The crane windbreak control system according to claim 1, wherein: the intelligent alarm device also comprises an alarm device which is in signal connection with the processor.
3. The crane windbreak control system according to claim 1, wherein: the brake system also comprises a detection device for detecting the state of the second brake device, and the detection device is in signal connection with the processor.
4. The crane windbreak control system according to claim 1, wherein: the second brake device is an electric wheel-side brake.
5. The crane windbreak control system according to claim 1, wherein: the wireless communication module is in signal connection with the processor.
6. The crane windbreak control system according to claim 1, wherein: the device also comprises an image acquisition device which is in signal connection with the processor.
7. A windproof control method for a crane is characterized by comprising the following steps: it comprises the following steps:
s1, detecting the wind speed by a wind speed sensor, and if the detected wind speed is less than X, continuing to detect; if the wind speed is between X and Y, jumping to the next step; if the wind speed is greater than or equal to Y, jumping to step S3;
s2, controlling an alarm device to give an alarm, and then returning to the step S1 to continue detection;
s3, controlling an alarm device to give an alarm, controlling the crane to stop working, simultaneously controlling a first brake device to start, then controlling a moving speed sensor to work, detecting the moving speed, and then jumping to the next step;
s4, if the detected moving speed is less than Zm/min, directly starting all the second braking devices; and if the detected moving speed is greater than or equal to Zm/min, the second braking device needs to be controlled to work step by step.
8. The crane windproof control method according to claim 7, characterized in that: step S1 further requires detecting the wind direction, and the step S4 of controlling the second braking device to work step by step means: the second brake device is activated in order from far to near according to the wind direction detected in step S1.
9. The crane windproof control method according to claim 7, characterized in that: step S3, before detecting the moving speed, whether a moving speed sensor is arranged or not needs to be judged, and if the moving speed sensor is arranged, the moving speed is normally detected; if the moving speed sensor is not installed, the second braking device is started after the first braking device is controlled to be started for 3-5 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011349232.XA CN112374373A (en) | 2020-11-26 | 2020-11-26 | Windproof control system and method for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011349232.XA CN112374373A (en) | 2020-11-26 | 2020-11-26 | Windproof control system and method for crane |
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| Publication Number | Publication Date |
|---|---|
| CN112374373A true CN112374373A (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011349232.XA Pending CN112374373A (en) | 2020-11-26 | 2020-11-26 | Windproof control system and method for crane |
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| CN (1) | CN112374373A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023144229A1 (en) * | 2022-01-27 | 2023-08-03 | Dellner Bubenzer Germany Gmbh | Braking system for a rail-mounted traveling unit of a transfer means |
-
2020
- 2020-11-26 CN CN202011349232.XA patent/CN112374373A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023144229A1 (en) * | 2022-01-27 | 2023-08-03 | Dellner Bubenzer Germany Gmbh | Braking system for a rail-mounted traveling unit of a transfer means |
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