CN116730192A - Method, system and storage medium for detecting false hanging of tower crane lifting hook - Google Patents
Method, system and storage medium for detecting false hanging of tower crane lifting hook Download PDFInfo
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- CN116730192A CN116730192A CN202211708772.1A CN202211708772A CN116730192A CN 116730192 A CN116730192 A CN 116730192A CN 202211708772 A CN202211708772 A CN 202211708772A CN 116730192 A CN116730192 A CN 116730192A
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- 238000000034 method Methods 0.000 title claims abstract description 53
- 238000003860 storage Methods 0.000 title claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 26
- 238000001514 detection method Methods 0.000 claims description 19
- 238000004590 computer program Methods 0.000 claims description 4
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- 230000000694 effects Effects 0.000 description 4
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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
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- 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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The application discloses a method, a system and a storage medium for detecting false hanging of a tower crane lifting hook. The method for detecting the false hanging of the tower crane lifting hook comprises the following steps: in the hoisting operation, detecting weight data of a lifting hook; after the weight leaves the ground, recording a group of weight data of the lifting hook, and calculating to obtain an average value of the group of weight data, wherein the deviation between the maximum value and the minimum value of the group of weight data and the average value is smaller than a preset range; and in the lifting hook transferring or descending process, judging whether the weight data of the lifting hook is larger than the first preset times of the average value or smaller than the second preset times of the average value, and if so, triggering an emergency stop instruction and/or an alarm instruction. By implementing the scheme of the application, a driver can timely detect the potential risk of false hanging, so that the related risk during the hoisting operation of the tower crane is effectively reduced.
Description
Technical Field
The application relates to the technical field of tower cranes, in particular to a method, a system and a storage medium for detecting false hanging of a tower crane lifting hook.
Background
In the fields of industry, production, construction and the like, a tower crane (tower crane) is often required to be used in high-altitude operation, and the tower crane is a rotary crane with a movable arm arranged at the upper part of a high-rise tower body, so that the working range is large, and the tower crane is mainly used for vertical transportation of materials and component installation in the multi-layer, high-rise building and high-altitude hoisting processes. The device mainly comprises three parts of a metal structure, a working mechanism and an electric system, wherein the metal structure comprises a base, a tower body (standard section), a suspension arm, a counterweight, a balance arm (bearing the counterweight), a trolley, a lifting hook, a jacking mechanism, a cab, an attaching rod and the like; the working mechanism comprises four parts of lifting, amplitude changing, rotation and walking; the electric system comprises a motor, a controller, a power distribution frame, a connecting line, a signal and lighting device and the like.
In the hoisting process, the hoisting mechanism drives the trolley to move back and forth on the suspension arm, so as to drive the lifting hook to move up and down, thereby being capable of realizing the hoisting and unloading of the heavy object on the lifting hook, and in addition, the hoisting and transferring of the heavy object in the operation range of the tower crane can be realized by adding amplitude variation, rotation and the like. Various operations of the tower crane are generally realized through the operation of a driver, however, due to the high height of the tower crane and wide coverage range, the driver is inevitably provided with a certain blind area in the operation process; when working in the blind area, if the lifting hook is used for hanging buildings, trees or ground objects by mistake in the lifting process, a driver is difficult to detect in time, and under the condition, danger is easy to occur, such as the breakage of a lifting steel wire rope of the tower crane and the falling of heavy objects, and serious safety accidents are caused by the fact that the tower crane is tipped over.
In view of the above-mentioned drawbacks and shortcomings, there is a need for technical improvements and solutions by those skilled in the art.
Disclosure of Invention
In view of the above, the embodiments of the present application are directed to providing a method, a system, and a storage medium for detecting a false hook of a tower crane, which can make full use of relevant data of the tower crane during a hoisting process to determine whether the false hook is on, and trigger a parking instruction or an alarm instruction when determining the false hook, so that a driver can timely perceive a potential risk of the false hook, thereby effectively reducing the relevant risk of the hoisting operation of the tower crane.
In a first aspect, the method for detecting the false hanging of the tower crane lifting hook provided by the embodiment of the application comprises the following steps: in the hoisting operation, detecting weight data of a lifting hook; after the weight leaves the ground, recording a group of weight data of the lifting hook, and calculating to obtain an average value of the group of weight data, wherein the deviation between the maximum value and the minimum value of the group of weight data and the average value is smaller than a preset range; and in the lifting hook transferring or descending process, judging whether the weight data of the lifting hook is larger than the first preset times of the average value or smaller than the second preset times of the average value, and if so, triggering an emergency stop instruction and/or an alarm instruction.
Further, the set of weight data is 20 cycles of weight data.
Further, the predetermined range is 2%.
Further, the first predetermined multiple is 1.1, and the second predetermined number of bits is 0.9.
Further, the weight data of the detection lifting hook specifically comprises: weight data are detected in real time through a weight sensor arranged on the lifting hook.
Further, in the hoisting operation, detecting the position information of the trolley; calculating the moment of the weight according to the detected position information and the detected weight data; and judging whether the moment exceeds a preset value, if so, limiting load increasing operation and/or triggering an alarm instruction.
Further, the load increasing operation includes at least one of: the lifting hook descends, the lifting hook rises, the lifting arm rises, and the lifting arm rotates.
In a second aspect, the system for detecting the false hanging of the lifting hook of the tower crane provided by the embodiment of the application comprises a weight detection unit, a recording and calculating unit and a processing and operating unit, wherein the weight detection unit is used for detecting weight data of the lifting hook in lifting operation; the recording and calculating unit is used for recording a group of weight data of the lifting hook after the weight leaves the ground, calculating and obtaining an average value of the group of weight data, and the deviation between the maximum value and the minimum value of the group of weight data and the average value is smaller than a preset range; and the processing operation unit is used for judging whether the weight data of the lifting hook is larger than the first preset times of the average value or smaller than the second preset times of the average value in the lifting hook transferring or descending process, and if so, triggering an emergency stop instruction and/or an alarm instruction.
In a third aspect, an embodiment of the present application provides a computer storage medium having stored thereon a computer program which, when executed by a processor, implements a method as set forth in any one of the preceding claims.
After the technical scheme of the embodiment of the application is adopted, the weight data change of the lifting hook is fully utilized to realize the false hanging detection, the weight data of the lifting hook is detected in the lifting operation process, a group of weight data meeting the requirement (the fluctuation is small enough) is recorded and calculated to obtain the average value during the period that the weight data is stable (after the weight leaves the ground), then the weight data detected in real time is compared with the average value in other stages of the lifting operation, such as the lifting hook transferring and descending process, if the weight data is larger than or smaller than a preset multiple, the false hanging is judged to occur, and at the moment, an emergency stop instruction is triggered and/or an alarm instruction is triggered, so that a driver can timely detect the false hanging potential risk, and the related risk is effectively reduced.
Drawings
Fig. 1 is a schematic flow chart of a method for detecting false hanging of a tower crane hook according to an embodiment of the present application;
fig. 2 is a schematic diagram of a frame of a tower crane hook false-hanging detection system according to an embodiment of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by a person of ordinary skill in the art without undue creative effort, are within the scope of protection of the present application based on the embodiments in the present application. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be arbitrarily combined with each other.
The following description refers to fig. 1 and 2 simultaneously. Referring to fig. 1, the method for detecting the false hanging of the tower crane hook provided by the embodiment of the application may include the steps of:
s101, detecting weight data of a lifting hook in lifting operation. Specifically, in the process of the hoisting operation of the tower crane, weight data of the weight of the lifting hook are detected in real time, and the weight data can timely reflect the external stress condition of the lifting hook. In the specific implementation, a weight sensor can be deployed on the lifting hook, and weight data of the lifting hook weight can be timely obtained through detection of the weight sensor.
S102, recording a group of weight data meeting the requirements and calculating the average value of the weight data. Specifically, in a certain time after the weight leaves the ground, the weight data of the lifting hook is not changed greatly, and the weight data of the stage can be used for false hanging judgment in the subsequent link, so that the weight data of the lifting hook can be fully utilized and integrated, a group of weight data of the lifting hook can be recorded, and the average value of the group of weight data is calculated, wherein the deviation between the maximum value and the minimum value of the group of weight data and the average value is smaller than a preset range (namely, the group of weight data meets the use requirement). That is, the deviation of the maximum value from the average value of the set of weight data is less than the predetermined range, and the deviation of the minimum value from the average value of the set of weight data is less than the predetermined range.
In particular, the predetermined range may be 2%, that is, when the hook is at the lowest position and carries a heavy object, it may be known that the hook is hanging the heavy object at this time, no recording is performed on the heavy object data, when the hook starts to slowly rise, the data of the weight sensor will change just beginning to change into a linear relationship, after the heavy object completely leaves the ground, the data change of the weight sensor becomes small, and when the data change is smaller than the predetermined range, for example, within 2%, a set of weight data starts to be recorded and an average value thereof is calculated, so that, in a set of weight data obtained within the predetermined fluctuation range, the fluctuation between the average value and the maximum value and the minimum value is not large, and thus the data may be used as basic data for subsequent judgment. In addition, the weight data of the group of weights can contain weight sensor data of 20 periods, so that the requirements of detection, calculation, error and sufficiency can be met, and the judgment of the subsequent links is more accurate.
S103, judging whether the weight data is larger than or smaller than a preset multiple of the average value. Specifically, during the hook transferring or descending process, it may be determined whether the weight data obtained by real-time detection is greater than a first predetermined multiple of the average value or less than a second predetermined multiple of the average value, and if so, the process goes to step S104. In practice, the first predetermined factor is 1.1 and the second predetermined factor may be 0.9, which enables corresponding intervention when weight data is implemented significantly greater than the average.
S104, triggering an emergency stop instruction and/or an alarm indication. Specifically, when judging whether weight data obtained through real-time detection is larger than a first preset multiple of the average value or smaller than a second preset multiple of the average value, the condition that the lifting state of the lifting hook is abnormal is indicated, namely, a false-hanging condition exists, so that an emergency stop instruction and/or an alarm instruction are triggered in time, further dangerous actions of the tower crane can be avoided, and a driver can know related emergency conditions in time and operate and avoid correspondingly.
By combining the detection method, after the detection method for the false hanging of the tower crane lifting hook is adopted, the lifting operation of the tower crane can be safer, a driver can know the potential risk of false hanging in time, and the occurrence of larger risks is avoided.
On the basis of the above embodiment, the method for detecting the false hanging of the tower crane hook may further include: in the hoisting operation, detecting the position information of the trolley; calculating the moment of the weight according to the detected position information and the detected weight data; judging whether the moment exceeds a preset value, if so, limiting load increasing operation and/or triggering alarm indication. After the mode is adopted, the anti-false-hanging and moment overrun limiting can be organically combined, the moment overrun detection accompanies the whole process of the hoisting operation, the moment overrun detection serves as primary risk prevention and control, the false-hanging detection serves as secondary risk prevention and control, the anti-false-hanging detection and the secondary risk prevention and control are parallel, and any risk is avoided by corresponding operation, so that the hoisting operation of the tower crane is safer. In a specific implementation, the detection of the trolley position information can be obtained through the state of a lifting encoder. In addition, the load increasing operation may include at least one of: the lifting hook descends, the lifting hook rises, the lifting arm rises, and the lifting arm rotates.
As shown in fig. 2, the embodiment of the application further provides a system for detecting the false hanging of the lifting hook of the tower crane, which comprises a weight detection unit, a recording and calculating unit and a processing and operating unit, wherein the weight detection unit is used for detecting weight data of the lifting hook in lifting operation; the recording and calculating unit is used for recording a group of weight data of the lifting hook after the weight leaves the ground, and calculating to obtain an average value of the group of weight data, wherein the deviation between the maximum value and the minimum value of the group of weight data and the average value is smaller than a preset range; and the processing operation unit is used for judging whether the weight data of the lifting hook is larger than the first preset times of the average value or smaller than the second preset times of the average value in the lifting hook transferring or descending process, and if so, triggering an emergency stop instruction and/or an alarm instruction. The method for detecting the false hanging of the tower crane lifting hook in the previous embodiment has the technical effects, and the system for detecting the false hanging of the tower crane lifting hook also has the corresponding technical effects, and is not repeated herein.
In order to better understand the method and system for detecting the false hook of the tower crane according to the foregoing embodiments, the following description is given by way of example and with specific conditions:
in a typical hoisting operation process, the hoisting device can be generally divided into three stages, namely a lifting stage and a process that a heavy object leaves the ground and lifts to a working height; secondly, in the operation stage or the transition stage, the weight is generally and stably operated; thirdly, in the lifting hook descending stage, the heavy objects are ready to be unloaded. The rising stage is generally in the visual field of a driver or the visual field of on-site shipping personnel, and if false hanging occurs, the false hanging can be found in time, so that the risk is not great. The occurrence of false hooks and thus the greater risk of false hooks mainly occurs during the running phase and the lowering phase of the hooks.
When the method is implemented, the weight sensor is deployed on the lifting hook, the position information of the trolley can be read through the lifting encoder, and the moment can be calculated in real time according to the data of the weight sensor and the position information of the trolley. When the lifting hook is at the lowest position (the position of the lifting hook can be known through the lifting encoder), and the system can know that the lifting hook is hanging a heavy object for operation at the moment through the change of the data of the weight sensor, and the weight data is not recorded in the process;
when the lifting hook starts to slowly rise, the data of the weight sensor can start to change, the change is in a linear relation, the fluctuation range of the data of the weight sensor is small, for example, within 2 percent, when the weight completely leaves the ground, the use requirement can be met, at the moment, the system starts to record the data, and the maximum value and the minimum value are refreshed at the moment, and in the process, the moment is calculated and recorded at the same time; the system iteratively records the weight sensor data of 20 cycles and calculates the deviation of the average value and the maximum value and the deviation of the average value and the minimum value, wherein the deviation can meet the smaller use requirement.
If false hanging occurs in the operation stage or the transition stage, the data of the weight sensor suddenly surge; the data of the weight sensor exceeds 1.1 times of the average value, at the moment, the system judges that the false hanging occurs, and the system triggers an emergency stop instruction and gives an alarm indication.
If false hanging occurs in the falling process of the lifting hook, the data of the weight sensor is suddenly reduced, the data of the weight sensor is lower than 0.9 times of the average value, at the moment, the system also judges that false hanging occurs, and the system can trigger an emergency stop instruction and give an alarm indication.
In specific implementation, the system can be built by adopting a PLC (Programmable Logic Controller, a programmable logic controller), a soft PLC or a singlechip to form a control unit, and is externally connected with each detector through corresponding I/O (input/output) and connected with each controlled object through corresponding output driving circuits, and logic execution of the control unit can be realized by configuring corresponding programs or codes.
The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, and which, when being executed by a processor, is capable of implementing the method described in the previous embodiment or the function implemented by the controller in the previous system. Since the methods and functions described in the foregoing embodiments have the foregoing technical effects, the computer storage medium also has corresponding technical effects, which are not described herein.
It should be noted that in the description of the present application and its embodiments, the azimuth or positional relationship as indicated by the terms "top", "bottom", "height", etc., are based on the azimuth or positional relationship shown in the drawings or general expression under actual field conditions, which are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application.
In the present application and its embodiments, the terms "disposed," "mounted," "connected," "secured," and the like are to be construed broadly as being either fixedly connected, detachably connected, or integrally formed, unless otherwise specifically defined and limited, for example; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application and its embodiments, unless explicitly stated and defined otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is less level than the second feature.
The above disclosure provides many different embodiments, or examples, for implementing different structures of the application. The foregoing description of specific example components and arrangements has been presented to simplify the present disclosure. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.
It should be noted that the computer readable medium may be a computer readable signal medium or a computer readable storage medium. The computer readable storage medium can be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the computer-readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
Additionally, the computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, with the computer-readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Additionally, program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
In addition, computer program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C ++ and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computer (for example, through the Internet using an Internet service provider).
While the foregoing is directed to embodiments of the present application, other and further details of the application may be had by the present application, it should be understood that the foregoing description is merely illustrative of the present application and that no limitations are intended to the scope of the application, except insofar as modifications, equivalents, improvements or modifications are within the spirit and principles of the application.
Claims (10)
1. The method for detecting the false hanging of the tower crane lifting hook is characterized by comprising the following steps of:
in the hoisting operation, detecting weight data of a lifting hook;
after the weight leaves the ground, recording a group of weight data of the lifting hook, and calculating to obtain an average value of the group of weight data, wherein the deviation between the maximum value and the minimum value of the group of weight data and the average value is smaller than a preset range;
and in the lifting hook transferring or descending process, judging whether the weight data of the lifting hook is larger than a first preset multiple of the average value or smaller than a second preset multiple of the average value, and if so, triggering an emergency stop instruction and/or an alarm instruction.
2. The method of claim 1, wherein the set of weight data is 20 cycles of weight data.
3. The method for detecting false hanging of a tower crane hook as set forth in claim 1, wherein the method further comprises:
when the deviation of the maximum value and the average value of the weight data of the lifting hook is less than 2 percent and the deviation of the minimum value and the average value of the weight data of the lifting hook is less than 2 percent after the weight leaves the ground, the weight data of the lifting hook starts to be recorded.
4. The method for detecting false hanging of a tower crane hook as set forth in claim 1, wherein the method further comprises:
triggering a close parking instruction and an alarm instruction when the weight data of the lifting hook exceeds 1.1 times of the average value in the lifting hook transferring process;
and triggering a close parking instruction and an alarm instruction when the weight data of the lifting hook exceeds 0.9 times of the average value in the lifting hook descending process.
5. The method for detecting false hanging of a tower crane hook according to claim 1, wherein the weight data of the detected hook is specifically: weight data are detected in real time through a weight sensor arranged on the lifting hook.
6. The method for detecting false hanging of a tower crane hook according to any one of claims 1 to 5, further comprising: in the hoisting operation, detecting the position information of the trolley; calculating the moment of the weight according to the detected position information and the detected weight data; and judging whether the moment exceeds a preset value, if so, limiting load increasing operation and/or triggering an alarm instruction.
7. The method for detecting false hanging of a tower crane hook as set forth in claim 6, wherein the load increasing operation includes at least one of: the lifting hook descends, the lifting hook rises, the lifting arm rises, and the lifting arm rotates.
8. The method for detecting false hanging of a tower crane hook according to claim 6, wherein the position information of the detection trolley is specifically: and detecting the position information of the trolley through a lifting encoder.
9. The system for detecting the false hanging of the lifting hook of the tower crane is characterized by comprising a weight detection unit, a recording and calculating unit and a processing and operating unit, wherein the weight detection unit is used for detecting weight data of a weight of the lifting hook in lifting operation; the recording and calculating unit is used for recording a group of weight data of the lifting hook after the weight leaves the ground, calculating and obtaining an average value of the group of weight data, and the deviation between the maximum value and the minimum value of the group of weight data and the average value is smaller than a preset range; and the processing operation unit is used for judging whether the weight data of the lifting hook is larger than the first preset times of the average value or smaller than the second preset times of the average value in the lifting hook transferring or descending process, and if so, triggering an emergency stop instruction and/or an alarm instruction.
10. A computer storage medium having stored thereon a computer program which, when executed by a processor, implements the method of any of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211708772.1A CN116730192A (en) | 2022-12-29 | 2022-12-29 | Method, system and storage medium for detecting false hanging of tower crane lifting hook |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211708772.1A CN116730192A (en) | 2022-12-29 | 2022-12-29 | Method, system and storage medium for detecting false hanging of tower crane lifting hook |
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| CN116730192A true CN116730192A (en) | 2023-09-12 |
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| CN202211708772.1A Pending CN116730192A (en) | 2022-12-29 | 2022-12-29 | Method, system and storage medium for detecting false hanging of tower crane lifting hook |
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