CN113090037A - Early warning method and system for unloading platform - Google Patents
Early warning method and system for unloading platform Download PDFInfo
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- CN113090037A CN113090037A CN202110353903.8A CN202110353903A CN113090037A CN 113090037 A CN113090037 A CN 113090037A CN 202110353903 A CN202110353903 A CN 202110353903A CN 113090037 A CN113090037 A CN 113090037A
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- early warning
- load
- tension
- unloading platform
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/166—Landings, receiving platforms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
Abstract
The application relates to the technical field of intelligent construction sites, in particular to an early warning method and system of an unloading platform. The method comprises the following steps: acquiring the tension of a diagonal cable on the cantilever girder in real time; judging whether the tension is greater than or equal to a preset tension warning value, and if so, generating a first early warning instruction; and sending a first early warning signal to a worker on the unloading platform according to the first early warning instruction. The loading condition of the unloading platform is indirectly monitored by acquiring the tension of the stay cable in real time, so that the probability of overload of the unloading platform is reduced, and the aim of reducing the probability of overturn of the unloading platform is fulfilled.
Description
Technical Field
The application relates to the technical field of intelligent construction sites, in particular to an early warning method and system of an unloading platform.
Background
The unloading platform is a transfer platform which is temporarily erected on a construction site, and is generally used for transferring building materials such as steel pipes. In practical application, the discharging platform is generally divided into three types, namely a movable discharging platform, a floor type discharging platform and an overhanging type discharging platform.
The platform of unloading of a formula of encorbelmenting among the correlation technique, as shown in fig. 1 and fig. 2, it includes two girder 1 and a secondary beam 2 of encorbelmenting, and two girder 1 of encorbelmenting are parallel to each other and all extend towards floor 3 along the horizontal direction, secondary beam 2 also extends along the horizontal direction, and the extending direction of secondary beam 2 and the extending direction mutually perpendicular of girder 1 of encorbelmenting simultaneously, 2 one end of secondary beam welds in one of them girder 1 one end of keeping away from floor 3 of encorbelmenting, the 2 other end of secondary beam welds in the one end that floor 3 was kept away from to another girder 1 of encorbelmenting.
The overhanging type discharging platform further comprises a bearing railing 4 and a protective railing 5, wherein the protective railing 5 is welded on the overhanging main beam 1 and the upper portion of the secondary beam 2, the bearing railing 4 is welded on the overhanging main beam 1 and between the secondary beams 2, and the protective railing 5 and the bearing railing 4 are in a grid shape.
A bearing plate 6 is welded at the upper part of the bearing railing 4, and the bearing railing 4 is projected in the bearing plate 6; the side part of the protective rail 5 is welded with a protective plate 7, and the protective rail 5 projects into the protective plate 7.
The overhanging type discharging platform further comprises four diagonal draw ropes 8 used for connecting the floor slab 3 and the overhanging main beam 1, wherein the two diagonal draw ropes 8 are fixedly connected to one of the overhanging main beams 1, and the other two diagonal draw ropes 8 are fixedly connected to the other one of the overhanging main beams 1.
In practical application, due to reasons such as overload or unbalance of building material stacking positions, the unloading platform has a certain probability of overturning, and the personal safety of workers is seriously threatened.
Disclosure of Invention
The invention aims to provide an early warning method for a discharging platform, which has the characteristic of reducing the probability of the overturning phenomenon of the discharging platform.
The above object of the present invention is achieved by the following technical solutions:
an early warning method for a discharge platform, the method comprising:
acquiring the tension of a diagonal cable on the cantilever girder in real time;
judging whether the tension is greater than or equal to a preset tension warning value, and if so, generating a first early warning instruction;
and sending a first early warning signal to a worker on the unloading platform according to the first early warning instruction.
By adopting the technical scheme, the tension of the stay cable is acquired in real time, and whether the tension is greater than or equal to the tension warning value is judged, so that the real-time bearing of the unloading platform is monitored, and therefore when the real-time bearing of the unloading platform approaches the load limit, a warning can be timely sent to a worker, the worker can stop the operation of continuously stacking the building materials on the unloading platform, and the probability of the overturning phenomenon of the unloading platform is reduced.
Optionally, the method further includes:
acquiring the total bearing weight of the bearing plate in real time;
judging whether the total bearing is larger than or equal to a preset load warning value or not, and if so, generating a second early warning instruction;
and sending a second early warning signal to a worker on the unloading platform according to the second early warning instruction.
Through adopting above-mentioned technical scheme, acquire the total bearing of loading board in real time to judge whether this total bearing is greater than or equal to the load warning value, cooperate the measure of above-mentioned pulling force monitoring again, come to carry out more effectual monitoring to the real-time bearing of platform of unloading, let the real-time bearing of platform of unloading be close the limit load after, the workman can in time learn this condition, and stop to the operation that building material was continuously stacked to the platform of unloading, and then reduce the emergence probability of the platform phenomenon of overturning of unloading.
Optionally, the acquiring the total bearing load of the bearing plate in real time includes:
after the bearing plate is subjected to region division and a plurality of bearing partitions are obtained, partition bearing corresponding to the bearing partitions in a one-to-one mode is collected in real time, and the areas corresponding to the bearing partitions are the same;
and carrying out summation calculation on the plurality of subarea bearing loads, and obtaining the total bearing load.
By adopting the technical scheme, the loading plate is divided into the regions, and the total bearing with more accurate numerical value is obtained through summation calculation, so that the aim of further reducing the probability of the overturning phenomenon of the unloading platform is fulfilled.
Optionally, after acquiring the partition load bearing corresponding to the plurality of load bearing partitions one to one in real time, the method further includes:
comparing the values of the plurality of subarea bearing loads, and obtaining the maximum subarea bearing load and the minimum subarea bearing load;
judging whether the difference value between the maximum subarea bearing capacity and the minimum subarea bearing capacity is larger than or equal to a preset balance warning value or not, and if so, generating a third early warning instruction;
and sending a third early warning signal to a worker on the unloading platform according to the third early warning instruction.
By adopting the technical scheme, the difference value between the maximum subarea bearing and the minimum subarea bearing is judged, so that when the difference value is greater than or equal to the balance warning value, a third early warning signal is sent to a worker, the worker can adjust the load of each bearing subarea in time according to the third early warning signal, further the gravity center balance of the unloading platform is kept, and the probability of the overturning phenomenon of the unloading platform is correspondingly reduced.
Optionally, before performing a numerical comparison on the plurality of partition load-bearing units and obtaining a maximum partition load-bearing unit and a minimum partition load-bearing unit, the method further includes:
and weighting the load bearing of the plurality of subareas according to a preset weight value distribution mechanism, wherein the weight value is used for explaining the influence degree of the load bearing subareas on the balance of the bearing plate.
Through adopting above-mentioned technical scheme, give different values to different subregion bearings to this distinguishes the influence degree that different bearing partitions balanced to the loading board, and correspondingly improves third early warning signal's early warning degree of accuracy, and then reduces the emergence probability of the platform phenomenon of toppling of unloading.
Optionally, after acquiring the total bearing load in real time, the method further includes:
judging whether the total bearing weight is greater than or equal to a preset dead load; if so, updating the current state of the unloading platform to be a working state;
judging whether the duration time of the working state is greater than or equal to a preset working duration, if so, generating a fourth early warning instruction;
sending a fourth early warning signal to workers on the unloading platform according to the fourth early warning instruction
By adopting the technical scheme, the stacking time of the building materials on the discharging platform is restricted so as to remind workers of timely conveying the building materials stacked on the discharging platform, so that the service life of the discharging platform is prolonged as far as possible, and the probability of overturning of the discharging platform is correspondingly reduced.
The invention of the application aims at providing an early warning system of the unloading platform, which has the characteristic of reducing the probability of the overturning phenomenon of the unloading platform.
The second objective of the present invention is achieved by the following technical solutions:
an early warning system for a discharge platform, the system comprising:
the tension sensing device is used for acquiring the tension of the stay cable on the cantilever girder in real time;
the tension monitoring device is used for judging whether the tension is greater than or equal to a preset tension warning value or not, and if so, generating a first early warning instruction;
and the early warning device sends a first early warning signal to a worker on the unloading platform according to the first early warning instruction.
By adopting the technical scheme, the tension of the stay cable is acquired in real time, and whether the tension is greater than or equal to the tension warning value is judged, so that the real-time bearing of the unloading platform is monitored, and therefore when the real-time bearing of the unloading platform approaches the load limit, a warning can be timely sent to a worker, the worker can stop the operation of continuously stacking the building materials on the unloading platform, and the probability of the overturning phenomenon of the unloading platform is reduced.
Optionally, the system further includes:
the load sensing device is used for acquiring the total load of the bearing plate in real time;
the load monitoring device is used for judging whether the total load is greater than or equal to a preset load warning value or not, and if so, generating a second early warning instruction;
and the early warning device is also used for sending a second early warning signal to a worker on the unloading platform according to the second early warning instruction.
Through adopting above-mentioned technical scheme, acquire the total bearing of loading board in real time to judge whether this total bearing is greater than or equal to the load warning value, cooperate the measure of above-mentioned pulling force monitoring again, come to carry out more effectual monitoring to the real-time bearing of platform of unloading, let the real-time bearing of platform of unloading be close the limit load after, the workman can in time learn this condition, and stop to the operation that building material was continuously stacked to the platform of unloading, and then reduce the emergence probability of the platform phenomenon of overturning of unloading.
Optionally, the load sensing device is specifically configured to:
after the bearing plate is subjected to region division and a plurality of bearing partitions are obtained, partition bearing corresponding to the bearing partitions in a one-to-one mode is collected in real time, and the areas corresponding to the bearing partitions are the same;
and carrying out summation calculation on the plurality of subarea bearing loads, and obtaining the total bearing load.
By adopting the technical scheme, the loading plate is divided into the regions, and the total bearing with more accurate numerical value is obtained through summation calculation, so that the aim of further reducing the probability of the overturning phenomenon of the unloading platform is fulfilled.
Optionally, the load sensing device is further configured to compare values of the plurality of subarea load-bearing units, and obtain a maximum subarea load-bearing unit and a minimum subarea load-bearing unit;
the load monitoring device is further used for judging whether the difference value between the maximum subarea bearing and the minimum subarea bearing is larger than or equal to a preset balance warning value or not, and if so, generating a third early warning instruction;
and the early warning device is also used for sending a third early warning signal to a worker on the unloading platform according to the third early warning instruction.
By adopting the technical scheme, the difference value between the maximum subarea bearing and the minimum subarea bearing is judged, so that when the difference value is greater than or equal to the balance warning value, a third early warning signal is sent to a worker, the worker can adjust the load of each bearing subarea in time according to the third early warning signal, further the gravity center balance of the unloading platform is kept, and the probability of the overturning phenomenon of the unloading platform is correspondingly reduced.
In summary, the present application includes at least one of the following beneficial technical effects:
1. monitoring the real-time bearing of the unloading platform by using a tension monitoring mode so as to prevent the unloading platform from being overloaded;
2. the mode of total bearing monitoring is utilized to monitor the real-time bearing of the unloading platform so as to prevent the unloading platform from being overloaded.
Drawings
FIG. 1 is a first schematic structural view of an overhanging discharge platform;
FIG. 2 is a second structural schematic view of an overhanging discharge platform, with the carrying floor and the protective plate concealed;
fig. 3 is a flowchart of an early warning method for a discharging platform in a first embodiment of the present application;
fig. 4 is a flowchart of an early warning method for a discharging platform in the second embodiment of the present application;
fig. 5 is a flowchart of an early warning method for a discharging platform in the third embodiment of the present application;
FIG. 6 is a top view of the carrier plate in the example mentioned in the third embodiment of the present application;
FIG. 7 is a distance explanatory diagram generated based on the correspondence of FIG. 6, showing the pitch of each bearer partition;
fig. 8 is a schematic structural diagram of an early warning system of a discharging platform in the fourth embodiment of the present application.
In the figure, 1, a cantilever girder; 2. a secondary beam; 3. a floor slab; 4. carrying railings; 5. a guard rail; 6. a carrier plate; 7. a protection plate; 8. a diagonal draw rope; 4100. a tension sensing device; 4200. a tension monitoring device; 4300. an early warning device; 4400. a load sensing device; 4500. a load monitoring device; 4600. a dead load time limiting device.
Detailed Description
The present application is described in further detail below with reference to figures 1-8.
The first embodiment is as follows:
an early warning method for a discharging platform, referring to fig. 3, specifically includes the following steps:
1100. the server acquires the tension of the stay cable to the cantilever girder in real time.
It should be noted that, in one or other embodiments of the present application, all the discharge platforms mentioned in this application are the overhanging discharge platforms shown in fig. 1 and fig. 2.
In practical application, the tension can be acquired in real time by means of a lateral pressure type sensor.
The tension is a sum of tensions of the four stay cords measured by the lateral pressure sensors.
1200. The server judges whether the tension is greater than or equal to a preset tension warning value or not, and if yes, a first early warning instruction is generated.
Specifically, after receiving the pulling force transmitted by the side-pressure sensor, the server compares the pulling force with a preset pulling force warning value.
If the numerical value of the tension is larger than or equal to the tension warning value, the server generates a first early warning instruction; otherwise, the server does not generate the first early warning instruction.
It should be noted that, in practical applications, the value range of the aforementioned pulling force warning value may be [12, 30], and the unit is kn.
1300. And the server sends a first early warning signal to a worker on the unloading platform according to the first early warning instruction.
In practical application, the first early warning signal can be sent out through an audible and visual alarm in communication connection with the server.
In the process of transferring building materials through the unloading platform, workers can estimate the real-time load of the unloading platform only by virtue of work experience due to lack of a means for acquiring the real-time load of the unloading platform, but the overload phenomenon can occur to the unloading platform at a certain probability because of the large estimation error of the method, the overload phenomenon easily causes the overturning of the unloading platform, and can seriously threaten the life safety of the workers on the unloading platform.
This application is through the tensile mode of acquireing oblique stay cord in real time, come indirect survey platform of unloading's real-time load, and through the settlement of pulling force warning value, when this pulling force reaches or surpasss above-mentioned pulling force warning value, in time to being located the workman on the platform of unloading and sending first early warning signal, so that the workman that is located on the platform of unloading stops the operation of transporting building material to the platform of unloading according to this first early warning signal, and begin to outwards transport the building material of stacking on the platform of unloading, thereby reduce the probability of appearance of the phenomenon of toppling on the platform of unloading, make the life safety of the workman that is located on the platform of unloading obtain better guarantee.
Example two:
referring to fig. 4, in the present embodiment, based on the scheme of the first embodiment, an optimization and improvement is performed, and particularly, step 2100, step 2200, and step 2300 are additionally provided.
The following will describe the modifications in further detail:
2100. the server acquires the total bearing of the bearing plate in real time.
Specifically, after the bearing plate is subjected to region division and a plurality of bearing partitions are obtained, partition bearing in one-to-one correspondence with the bearing partitions is acquired in real time through the weight sensor.
And summing the bearing loads of the plurality of subareas, thereby obtaining the total bearing load of the bearing plate.
The areas of the regions corresponding to the bearing partitions are the same.
In practical applications, the weight sensor may be disposed between the carrying rail and the carrying plate.
In the process of actually measuring and calculating the total bearing weight of the bearing plate, since the sensing range of the weight sensor is generally smaller than the area of the bearing plate, a large deviation exists between the measured total bearing weight and the current actual total bearing weight of the bearing plate (that is, the total bearing weight obtained by measurement and calculation is far smaller than the actual total bearing weight of the bearing plate), which may cause interference to subsequent early warning work based on the total bearing weight.
Based on the reason, the loading plate is equally divided, so that the loading plate is divided into a plurality of smaller bearing partitions, the partition bearing corresponding to each bearing partition is accurately measured out as much as possible in a mode of installing a weight sensor at each bearing partition, then the total bearing is obtained by accumulating the bearing of the plurality of partitions in a summing calculation mode, and the accuracy of the measured total bearing is improved.
2200. And the server judges whether the total bearing is greater than or equal to a preset load warning value or not, and if so, generates a second early warning instruction.
Specifically, after the server obtains the total bearing weight of the bearing plate through the plurality of weight sensors, the total bearing weight is compared with a preset load warning value.
If the total bearing weight is larger than or equal to the load warning value, the server generates a second early warning instruction; otherwise, the server does not generate the second early warning instruction.
In practical applications, the value of the load warning value may be [750, 900], and the unit is kilogram.
Preferably, the optimum load warning value is 850 kg.
2300. And the server sends a second early warning signal to workers on the unloading platform according to the second early warning instruction.
It should be noted that the process from step 1100 to step 1300 is overload monitoring based on tension, while the process from step 2100 to step 2300 is overload monitoring based on total load, in practical application, the two processes are performed synchronously, if only the first warning signal exists, the server will control the alarm to send out a sound signal to warn the worker; if only the second early warning signal exists, the server can also control the alarm to send out a sound signal to warn workers, but in consideration of distinguishing the first early warning signal from the second early warning signal, the server can display warning lamps with different colors to the workers while controlling the alarm to send out the sound signal, so that the workers can be helped to quickly locate the source of the early warning information while learning the early warning information.
For example, when the server only sends out the first warning signal, the worker hears the sound signal and lights up the warning lamp which observes the red color; when the server only sends out a second early warning signal, a worker can light a yellow warning lamp while hearing the sound signal; if the server sends out the first early warning signal and the second early warning signal together, the worker can observe that the red warning lamp and the yellow warning lamp are lighted together when hearing the sound signal.
In the process of monitoring the tension of the stay cable, the stay cable shakes under the action of external force, so that the overload condition of the bearing plate cannot be accurately monitored and early warned in the tension monitoring mode; in order to improve the early warning accuracy, the method and the device have the advantages that the total bearing capacity of the bearing plate is measured and calculated, the tension monitoring measure is matched, the overload condition of the bearing plate is monitored in multiple angles, when the real-time load of the bearing plate is close to the limit, the condition is informed to workers in time, the workers can adjust the quantity of the building materials stacked on the bearing plate in time, and the purpose of reducing the occurrence probability of the overload condition of the bearing plate is achieved.
Example three:
referring to fig. 5, in order to provide an early warning method for a discharging platform disclosed in the present application, the present embodiment is based on the scheme of the second embodiment, and is optimized and improved, and particularly, step 3100, step 3200, and step 3300 are additionally provided.
The following will describe the modifications in further detail:
3100. and the server compares the values of the load bearing of the plurality of subareas and obtains the maximum subarea load bearing and the minimum subarea load bearing.
Wherein the largest partition load bearing is used to indicate a largest partition load bearing of the plurality of partition load bearings, and the smallest partition load bearing is used to indicate a smallest partition load bearing of the plurality of partition load bearings.
3200. And the server judges whether the difference value between the maximum partition bearing and the minimum partition bearing is greater than or equal to a preset balance warning value or not, and if so, generates a third early warning instruction.
Specifically, after obtaining the maximum partition load bearing and the minimum partition load bearing, the server obtains a load bearing difference value according to the following formula: load bearing difference = maximum zone load bearing-minimum zone load bearing.
Then, the server compares the bearing difference value with a balance warning value, and if the bearing difference value is greater than or equal to the balance warning value, the server generates a third early warning instruction; otherwise, the server does not generate the third warning instruction.
It should be noted that, in practical applications, the above balance warning value may be in a range of [90, 300] in units of kilograms.
Preferably, optimal balance guard
3300. And the server sends a third early warning signal to workers on the unloading platform according to the third early warning instruction.
In the platform course of working of unloading, except that the overload problem easily leads to the platform of unloading to take place to overturn, the platform of unloading atress unbalanced's the condition also can cause the platform of unloading to overturn, based on this, this application just bears the subregion bearing of subregion through monitoring a plurality of, calculate and monitor the difference of maximum value and minimum in a plurality of subregion bearings, come to monitor the balanced state of the platform of unloading, in order to avoid appearing the workman and pile up the condition in platform one side of unloading in a large number with building material, thereby reduce the probability that the platform of unloading the condition of overturning appears.
It should be noted that, in practical application, the first warning signal, the second warning signal and the third warning signal may share the same sound signal, and the colors of the warning lights corresponding to the first warning signal, the second warning signal and the third warning signal are different, so that after the worker knows the sound signal, the worker can quickly determine the potential safety hazard existing at present in the unloading platform through the color of the lighted warning light, and further, the problem of the corresponding potential safety hazard is solved in a targeted manner.
Further, before executing step 3100, the server may further weight the plurality of partition bearers according to a preset weight assignment mechanism.
The weight is used for explaining the influence degree of each bearing partition on the balance of the bearing plate.
The following further explains the weight value distribution machine with reference to the example:
assuming that the top view of the carrier plate is shown in fig. 6, 9 rectangular regions with the same area, which are divided by the staggered dotted lines, are the carrier partitions, and the capital english alphabet shown in each carrier partition is the unique number corresponding to the carrier partition.
Wherein, bear subregion G, H, I all is located the one end that the loading board kept away from the floor.
Assuming that the distance between the floor slab and each bearing partition is as shown in fig. 7, point O in the figure is a bearing base point of the unloading platform, which actually indicates the midpoint position of the connection between the two overhanging main beams and the floor slab; in the figure, a plurality of lower case English letters are the central points of the corresponding bearing subareas, for example, the point a is the central point of the bearing subarea A, the point B is the central point of the bearing subarea B, and so on.
Meanwhile, the weight distribution mechanism is assumed to be:
if the distance between the bearing base point and the central point of the bearing partition is between (1, 2), setting the weight of the bearing partition to be 1;
if the distance between the bearing base point and the central point of the bearing partition is between (2, 2.5), setting the weight of the bearing partition to be 1.1;
if the distance between the bearing base point and the central point of the bearing partition is between (2.5, 3], setting the weight of the bearing partition to be 1.2;
if the distance between the bearing base point and the central point of the bearing partition is between (3, 3.5], setting the weight of the bearing partition to be 1.3;
if the distance between the bearing base point and the central point of the bearing partition is between (3.5, 4], setting the weight of the bearing partition to be 1.4;
if the distance between the bearing base point and the central point of the bearing partition is between (4, 4.5], the weight of the bearing partition is set to be 1.5.
In addition, the balance warning value is 90 kg, the weight of a worker is 65 kg, the bearing capacity of the partition bearing the partition A is 5 kg, the bearing capacity of the partition bearing the partition B is 5 kg, the bearing capacity of the partition bearing the partition C is 5 kg, the bearing capacity of the partition bearing the partition D is 5 kg, the bearing capacity of the partition bearing the partition E is 5 kg, the bearing capacity of the partition bearing the partition F is 5 kg, the bearing capacity of the partition bearing the partition G is 5 kg, the bearing capacity of the partition bearing the partition H is 5 kg, and the bearing capacity of the partition bearing the partition I is 5 kg.
According to the weight distribution mechanism, when the worker moves to the bearing partition G, the weight of the partition weighted by the bearing partition G is 105 kg, and the weight of the partition weighted by the bearing partition B is only 5 kg, so that the server generates a third early warning instruction correspondingly because the difference value between the two is greater than the balance warning value of 90 kg.
Similarly, when the worker moves to the bearing partition H or the bearing partition I, the server also generates a third warning instruction correspondingly.
In the actual use process of the unloading platform, because the distance between each bearing partition and the floor slab is different, the influence degree of the bearing of each partition on the balance of the bearing plate is different, so different weights need to be distributed to different bearing partitions, the position difference of each bearing partition is reflected as far as possible, and the server can generate a third early warning instruction more accurately.
Optionally, after the server obtains the total bearing weight of the loading plate, the total bearing weight is compared with a preset dead load, and if the total bearing weight is greater than or equal to the dead load, it is indicated that the loading plate is not in an unloaded state currently, so that the server updates the current state of the unloading platform to a working state.
After that, the server also judges whether the duration time of the working state is greater than or equal to the preset working duration, if so, a fourth early warning instruction is generated; otherwise, the fourth early warning instruction is not generated.
And the server sends a fourth early warning signal to workers on the unloading platform according to a fourth early warning instruction.
It should be noted that, in practical application, the first warning signal, the second warning signal, the third warning signal and the fourth warning signal may share the same sound signal, and the color of the warning light corresponding to the four warning signals is different.
In addition, the working time length can be in a value range of [1,2] and the unit is hour.
Because the unloading platform is a temporary structure and can be disassembled and assembled immediately according to actual requirements, the structural stability is poor and the service life is short; therefore, the unloading platform is only used as a temporary transfer station for the building materials, if the building materials are stacked on the unloading platform for a long time or workers stand on the unloading platform for a long time, the aging of the unloading platform can be accelerated, and the probability of the overturning condition of the unloading platform can be improved; based on the problem, the application restricts the stay time of the building materials or workers on the unloading platform by monitoring the duration of the unloading in the working state so as to delay the aging rate of the unloading platform and correspondingly reduce the probability of the overturning condition of the unloading platform.
Example four:
the embodiment of the application provides an early warning system of platform of unloading, refer to fig. 8 and show, this system includes:
the tension sensing device 4100 is used for acquiring the tension of the diagonal draw rope on the cantilever girder in real time;
the tension monitoring device 4200 is used for judging whether the tension is greater than or equal to a preset tension warning value, and if so, generating a first early warning instruction;
and the early warning device 4300 sends a first early warning signal to a worker on the discharging platform according to the first early warning instruction.
Optionally, the system further includes:
the load sensing device 4400 is used for acquiring the total load of the bearing plate in real time;
a load monitoring device 4500, configured to determine whether the total load is greater than or equal to a preset load warning value, and if so, generate a second warning instruction;
the early warning device 4300 is further configured to send a second early warning signal to a worker on the discharging platform according to the second early warning instruction.
Optionally, the load sensing device 4400 is specifically configured to:
after the bearing plate is subjected to region division and a plurality of bearing partitions are obtained, partition bearing corresponding to the bearing partitions in a one-to-one mode is collected in real time, and the areas corresponding to the bearing partitions are the same;
and carrying out summation calculation on the plurality of subarea bearing loads, and obtaining the total bearing load.
Optionally, the load sensing device 4400 is further configured to perform numerical comparison on the multiple partition load bearings, and obtain a maximum partition load bearing and a minimum partition load bearing;
the load monitoring device 4500 is further configured to determine whether a difference between the maximum partition load bearing and the minimum partition load bearing is greater than or equal to a preset balance warning value, and if so, generate a third warning instruction;
the early warning device 4300 is further configured to send a third early warning signal to a worker on the discharging platform according to the third early warning instruction.
Optionally, the load sensing device 4400 is further configured to weight the multiple subareas according to a preset weight distribution mechanism before performing numerical comparison on the multiple subareas and obtaining a maximum subarea load and a minimum subarea load, where the weight is used to explain an influence degree of the bearing subareas on the bearing plate balance.
Optionally, the system further includes:
a static load time-limiting device 4600, configured to determine whether the total bearing weight is greater than or equal to a preset static load dead weight; if so, updating the current state of the unloading platform to be a working state;
the device when the dead load is limited 4600 is further configured to determine whether the duration of the working state is greater than or equal to a preset working duration, and if so, generate a fourth warning instruction;
the early warning device 4300 is further configured to send a fourth early warning signal to a worker on the discharging platform according to the fourth early warning instruction.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. An early warning method for a discharging platform is characterized by comprising the following steps:
acquiring the tension of a diagonal draw rope (8) on the cantilever girder (1) in real time;
judging whether the tension is greater than or equal to a preset tension warning value, and if so, generating a first early warning instruction;
and sending a first early warning signal to a worker on the unloading platform according to the first early warning instruction.
2. The method of claim 1, further comprising:
acquiring the total bearing weight of the bearing plate (6) in real time;
judging whether the total bearing is larger than or equal to a preset load warning value or not, and if so, generating a second early warning instruction;
and sending a second early warning signal to a worker on the unloading platform according to the second early warning instruction.
3. The method according to claim 2, wherein the real-time obtaining of the total bearing load of the load bearing plate (6) comprises:
after the bearing plate (6) is subjected to region division and a plurality of bearing partitions are obtained, partition bearing corresponding to the bearing partitions in a one-to-one mode is collected in real time, and the areas of the regions corresponding to the bearing partitions are the same;
and carrying out summation calculation on the plurality of subarea bearing loads, and obtaining the total bearing load.
4. The method of claim 3, wherein after collecting the zone load bearing in one-to-one correspondence with the plurality of load bearing zones in real time, the method further comprises:
comparing the values of the plurality of subarea bearing loads, and obtaining the maximum subarea bearing load and the minimum subarea bearing load;
judging whether the difference value between the maximum subarea bearing capacity and the minimum subarea bearing capacity is larger than or equal to a preset balance warning value or not, and if so, generating a third early warning instruction;
and sending a third early warning signal to a worker on the unloading platform according to the third early warning instruction.
5. The method of claim 4, wherein prior to numerically comparing the plurality of zone weight loads and obtaining a maximum zone weight load and a minimum zone weight load, the method further comprises:
and weighting the load bearing of the plurality of subareas according to a preset weight value distribution mechanism, wherein the weight value is used for explaining the influence degree of the load bearing subareas on the balance of the bearing plate (6).
6. The method of claim 2, wherein after acquiring the total load bearing in real time, the method further comprises:
judging whether the total bearing weight is greater than or equal to a preset dead load; if so, updating the current state of the unloading platform to be a working state;
judging whether the duration time of the working state is greater than or equal to a preset working duration, if so, generating a fourth early warning instruction;
and sending a fourth early warning signal to workers on the unloading platform according to the fourth early warning instruction.
7. An early warning system for a discharge platform, the system comprising:
the tension sensing device (4100) is used for collecting the tension of the stay cable (8) on the cantilever girder (1) in real time;
the tension monitoring device (4200) is used for judging whether the tension is greater than or equal to a preset tension warning value or not, and if so, generating a first early warning instruction;
and the early warning device (4300) sends a first early warning signal to a worker on the unloading platform according to the first early warning instruction.
8. The system of claim 7, further comprising:
the load sensing device (4400) is used for acquiring the total load of the bearing plate (6) in real time;
the load monitoring device (4500) is used for judging whether the total load is larger than or equal to a preset load warning value or not, and if yes, a second early warning instruction is generated;
the early warning device (4300) is further used for sending a second early warning signal to a worker on the unloading platform according to the second early warning instruction.
9. The system according to claim 8, wherein the load sensing device (4400) is specifically configured to:
after the bearing plate (6) is subjected to region division and a plurality of bearing partitions are obtained, partition bearing corresponding to the bearing partitions in a one-to-one mode is collected in real time, and the areas of the regions corresponding to the bearing partitions are the same;
and carrying out summation calculation on the plurality of subarea bearing loads, and obtaining the total bearing load.
10. The system of claim 9, wherein the load sensing device (4400) is further configured to numerically compare the plurality of zone loads and obtain a maximum zone load and a minimum zone load;
the load monitoring device (4500) is further used for judging whether a difference value between the maximum subarea bearing and the minimum subarea bearing is larger than or equal to a preset balance warning value, and if so, generating a third early warning instruction;
the early warning device (4300) is further used for sending a third early warning signal to a worker on the discharging platform according to the third early warning instruction.
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| CN202110353903.8A CN113090037A (en) | 2021-04-01 | 2021-04-01 | Early warning method and system for unloading platform |
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| JP2014511448A (en) * | 2011-01-26 | 2014-05-15 | ヴォッベン プロパティーズ ゲーエムベーハー | Method and apparatus for building tower of wind power generator |
| CN208669000U (en) * | 2018-08-28 | 2019-03-29 | 重庆勤智科技有限公司 | A kind of discharging platform monitoring system |
| CN112380599A (en) * | 2020-11-09 | 2021-02-19 | 南京邦峰智能科技有限公司 | Bridge intelligent online monitoring and early warning system based on big data analysis |
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| JP2014511448A (en) * | 2011-01-26 | 2014-05-15 | ヴォッベン プロパティーズ ゲーエムベーハー | Method and apparatus for building tower of wind power generator |
| CN208669000U (en) * | 2018-08-28 | 2019-03-29 | 重庆勤智科技有限公司 | A kind of discharging platform monitoring system |
| CN112380599A (en) * | 2020-11-09 | 2021-02-19 | 南京邦峰智能科技有限公司 | Bridge intelligent online monitoring and early warning system based on big data analysis |
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Application publication date: 20210709 |