阅读说明：本技术 一种用于港口门座式起重机作业风速预警的方法及装置 (Method and device for early warning of operation wind speed of port portal crane ) 是由 贾鹏宇 程大庆 胡艳华 王明超 高庆辉 周静 虞学明 李思辰 詹水芬 蒋文新 赵 于 2021-08-24 设计创作，主要内容包括：本发明提供了一种用于港口门座式起重机作业风速预警的方法及装置,包括风速仪、风向仪、电子罗盘、声光报警器、可编程控制模块、4G数据传输模块、信息化系统,所述风速仪输出端、风向仪输出端均通过线路一与可编程控制模块输入端连接,所述电子罗盘输出端通过线路二与可编程控制模块输入端连接,所述声光报警器输入端通过线路三与可编程控制模块输出端连接,所述信息化模块输入端通过4G数据传输模块与可编程控制模块输出端连接,用于接受风速、风向数据、报警信号。本发明所述的一种用于港口门座式起重机作业风速预警的方法及装置,用于港口门座式起重机作业风速预警,考虑了风速风向仪安装高度、风向对报警阈值的影响。(The invention provides a method and a device for early warning of wind speed in operation of a port portal crane, and the method and the device comprise an anemoscope, a anemoscope, an electronic compass, an audible and visual alarm, a programmable control module, a 4G data transmission module and an informatization system, wherein the output end of the anemoscope and the output end of the anemoscope are both connected with the input end of the programmable control module through a first line, the output end of the electronic compass is connected with the input end of the programmable control module through a second line, the input end of the audible and visual alarm is connected with the output end of the programmable control module through a third line, and the input end of the informatization module is connected with the output end of the programmable control module through the 4G data transmission module and is used for receiving wind speed, wind direction data and alarm signals. The method and the device for early warning the operation wind speed of the port gantry crane are used for early warning the operation wind speed of the port gantry crane, and the influences of the installation height of an anemorumbometer and the wind direction on an alarm threshold value are considered.)

1. A method for early warning of operation wind speed of a port portal crane is characterized by comprising the following specific steps:

s1, setting an alarm threshold value of the average wind speed in a certain time period, wherein the time period of the alarm threshold value is M; setting an alarm threshold value formula of the instantaneous wind speed in a certain time period, wherein the certain time period is N;

s2, acquiring the height z and the real-time wind speed v of the wind speed and direction acquisition device_zWind direction angle theta tested by wind direction indicator₁Rotation angle theta of gantry crane₂；

S3, calculating the real-time wind speed v of the height z_zConverting into the instantaneous wind speed within the time period of N of the height z, and converting the real-time wind speed v of the height z into the real-time wind speed v of the height z_zConverting into an average wind speed in the M time period of the height z; converting the instantaneous wind speed in the N time period of the height z into the instantaneous wind speed in the N time period of a certain height, and converting the average wind speed in the M time period of the height z into the average wind speed in the M time period of a certain height, wherein the certain height is H;

s4, passing the alarm threshold value formula of the instantaneous wind speed in the N time period in the step S1 and combining the wind direction angle theta tested by the anemoscope in the step S2₁Rotation angle theta of gantry crane₂Acquiring an instantaneous wind speed alarm threshold value in N time periods;

s5, comparing the average wind speed in the M time period at the H height in the step S3 with the alarm threshold value of the average wind speed in the M time period in the step S1 to obtain a first result, and comparing the instantaneous wind speed in the N time period at the H height in the step S3 with the wind speed alarm threshold value in the N time period in the step S4 to obtain a second result;

executing corresponding alarm measures according to the first result and the second result;

and S6, repeating the steps S2-S5 to perform early warning work on the wind speed of the operation of the port portal crane in real time.

2. The method for early warning the wind speed in the operation of the port portal crane according to claim 1, wherein the method comprises the following steps: the M time period is 10min, the N time period is 3s, the H height is 10M, and the alarm threshold value of the 10min average wind speed is 15.8M/s.

3. The method for early warning the wind speed in the operation of the harbor portal crane according to claim 2, wherein the method comprises the following steps: in step S1, an alarm threshold formula for the 3S instantaneous wind speed;

θ＝|θ_w-θ_r|

θ_w＝θ₁+θ₂

θ_w＝θ_w 0°≤θ_w＜180°

θ_w＝θ_w-180° 180°≤θ_w＜360°

wherein:

v_c-an alarm threshold, m/s;

v_pparallel to the track alarm threshold, m/s, v_p＝20m/s；

v_vPerpendicular to track alarm threshold, m/s, v_v＝23.5m/s；

Theta-the angle between the wind direction and the track;

θ_w-the angle of the wind direction to the due north direction;

θ₁-anemometer tested wind direction angle;

θ₂gantry craneRotating the angle;

θ_rthe track is at an angle to the true north of quadrant 1 or 4.

4. The method for early warning the wind speed in the operation of the harbor portal crane according to claim 2, wherein the method comprises the following steps: in the step S2, in the step S,

real-time wind speed v of height z_zThe equation for the instantaneous wind speed over 3s, which translates to height z, is:

real-time wind speed v of height z_zThe average wind velocity over 10min converted to height z is given by:

the 3s instantaneous wind speed at height z is translated into the 3s instantaneous wind speed formula at 10m height:

the 10min average wind speed at height z is translated into the 10min average wind speed formula at 10m height:

wherein the content of the first and second substances,

v_z-real-time wind speed, m/s, collected z meters high;

v_10-3s-the converted 3s instantaneous wind speed at 10m height, m/s;

v_z-3s-the PLC calculates the processed z meters altitude 3s instantaneous wind speed, m/s;

v_10-10minheight 10 meters after conversionAverage wind speed of 10min, m/s;

v_z-10min-the PLC calculates the processed average wind speed at z meters height of 10min, m/s;

alpha-index, set to 0.12.

5. The device for early warning the wind speed in the operation of the port portal crane, which is disclosed by the claim 1, is characterized in that: comprises an anemoscope, a wind direction indicator, an electronic compass, an audible and visual alarm, a programmable control module, a 4G data transmission module and an information system,

anemoscope output, anemoscope output all are connected with programmable control module input through the circuit, the electron compass output passes through the circuit and is connected with programmable control module input, the audible-visual annunciator input passes through the circuit and is connected with programmable control module output, the information module input is connected with programmable control module output through 4G data transmission module for accept wind speed, wind direction data, alarm signal.

6. The device for early warning of the wind speed in the operation of the harbor portal crane according to claim 5, wherein: the anemoscope, the anemoscope and the electronic compass are all arranged at the upper end of the outer side of the crane cab.

Technical Field

The invention belongs to the field of crane wind speed early warning, and particularly relates to a method and a device for early warning of wind speed in port portal crane operation.

Background

With the rapid development of port loading and unloading transportation industry, the port hoisting machinery is developed in large scale, so that the gravity center of the large hoisting machinery in the port is improved, the windward area is increased, the possibility of suffering from wind disaster is increased, and once the wind speed exceeds the bearing capacity of the large hoisting machinery, the hoisting machinery is overturned and slides. Therefore, the device for early warning the operation wind speed of the port portal crane is designed to be particularly important.

Disclosure of Invention

In view of the above, the present invention is directed to a method and a device for early warning of wind speed in operation of a port gantry crane, so as to solve the problem that the risk of overturning and slipping of the crane is caused by lack of a wind speed early warning device and an effective method in operation of the port gantry crane.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

on the one hand, the application provides a method for early warning of operation wind speed of a port portal crane, which is characterized by comprising the following specific steps of:

s1, setting an alarm threshold value of the average wind speed in a certain time period, wherein the time period of the alarm threshold value is M; setting an alarm threshold value formula of the instantaneous wind speed in a certain time period, wherein the certain time period is N;

s2, acquiring the height z and the real-time wind speed v of the wind speed and direction acquisition device_zWind direction angle theta tested by wind direction indicator₁Gantry crane rotation angle theta₂；

S3, calculating the real-time wind speed v of the height z_zConverting into the instantaneous wind speed within the time period of N of the height z, and converting the real-time wind speed v of the height z into the real-time wind speed v of the height z_zConverting into an average wind speed in the M time period of the height z; converting the instantaneous wind speed in the N time period of the height z into the instantaneous wind speed in the N time period of a certain height, and converting the average wind speed in the M time period of the height z into the average wind speed in the M time period of a certain height, wherein the certain height is H;

s4, passing the alarm threshold value formula of the instantaneous wind speed in the N time period in the step S1 and combining the wind direction angle theta tested by the anemoscope in the step S2₁Rotation angle theta of gantry crane₂Acquiring an instantaneous wind speed alarm threshold value in N time periods;

s5, comparing the average wind speed in the M time period at the H height in the step S3 with the alarm threshold value of the average wind speed in the M time period in the step S1 to obtain a first result, and comparing the instantaneous wind speed in the N time period at the H height in the step S3 with the wind speed alarm threshold value in the N time period in the step S4 to obtain a second result;

executing corresponding alarm measures according to the first result and the second result;

and S6, repeating the steps S2-S5 to perform early warning work on the wind speed of the operation of the port portal crane in real time.

Further, the M time period is 10min, the N time period is 3s, the H height is 10M, and the alarm threshold value of the 10min average wind speed is 15.8M/s.

Further, in step S1, an alarm threshold formula for the 3S instantaneous wind speed;

θ＝|θ_w-θ_r|

θ_w＝θ₁+θ₂

θ_w＝θ_w 0°≤θ_w＜180°

θ_w＝θ_w-180° 180°≤θ_w＜360°

wherein:

v_c-an alarm threshold, m/s;

v_pparallel to the track alarm threshold, m/s, v_p＝20m/s；

v_vPerpendicular to track alarm threshold, m/s, v_v＝23.5m/s；

Theta-the angle between the wind direction and the track;

θ_w-the angle of the wind direction to the due north direction;

θ₁-anemometer tested wind direction angle;

θ₂gantry crane angle of rotation θ₂；

θ_rThe track is at an angle to the true north of quadrant 1 or 4.

Further, in step S2,

real-time wind speed v of height z_zThe equation for the instantaneous wind speed over 3s, which translates to height z, is:

real-time wind speed v of height z_zThe average wind velocity over 10min converted to height z is given by:

convert the instantaneous wind speed within 3s at height z to the instantaneous wind speed within 3s at 10m height:

the 10min average wind speed at height z is converted into a 10min average wind speed at 10m height:

wherein the content of the first and second substances,

v_z-real-time wind speed, m/s, collected z meters high;

v_10-3s-the converted 3s instantaneous wind speed at 10m height, m/s;

v_z-3s-the PLC calculates the processed z meters altitude 3s instantaneous wind speed, m/s;

v_10-10min-10 min average wind speed at 10m height, m/s, after conversion;

v_z-10min-the PLC calculates the processed average wind speed at z meters height of 10min, m/s;

alpha-index, set to 0.12.

On the other hand, the application provides a device for early warning the wind speed in the operation of the harbor portal crane, which is disclosed by the claim 1 and comprises an anemoscope, a wind direction indicator, an electronic compass, an audible and visual alarm, a programmable control module, a 4G data transmission module and an informatization system,

anemoscope output, anemoscope output all are connected with programmable control module input through the circuit, the electron compass output passes through the circuit and is connected with programmable control module input, the audible-visual annunciator input passes through the circuit and is connected with programmable control module output, the information module input is connected with programmable control module output through 4G data transmission module for accept wind speed, wind direction data, alarm signal.

Furthermore, the anemoscope and the electronic compass are all arranged at the upper end of the outer side of the crane cab.

Compared with the prior art, the method and the device for early warning the operation wind speed of the port portal crane have the following beneficial effects:

(1) according to the device and the method for early warning of the operation wind speed of the port gantry crane, the influences of the installation heights of the anemoscope and the wind direction on the alarm threshold value are considered, the influences of the instantaneous wind speed and the average wind speed on the safety of the port gantry crane are respectively predicted, the dangerous condition is timely alarmed through the photoelectric alarm, and the operation safety of the port gantry crane is improved.

(2) According to the device for early warning of the wind speed in the operation of the port portal crane, the anemoscope and the electronic compass are arranged at the upper end outside the crane cab, so that signals at the same position can be sensed conveniently, and the joint maintenance of the anemoscope, the anemoscope and the electronic compass is facilitated.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a flow chart of a device for early warning of wind speed in operation of a port portal crane according to an embodiment of the invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1, a method for early warning of wind speed in operation of a port portal crane comprises the following specific steps:

s1, setting an alarm threshold value of the average wind speed in a certain time period, wherein the time period of the alarm threshold value is M; setting an alarm threshold value formula of the instantaneous wind speed in a certain time period, wherein the certain time period is N;

s2, acquiring the height z and the real-time wind speed v of the wind speed and direction acquisition device_zWind direction angle theta tested by wind direction indicator₁Seat type doorRotation angle theta of crane₂；

S3, calculating the real-time wind speed v of the height z_zConverting into the instantaneous wind speed within the time period of N of the height z, and converting the real-time wind speed v of the height z into the real-time wind speed v of the height z_zConverting into an average wind speed in the M time period of the height z; converting the instantaneous wind speed in the N time period of the height z into the instantaneous wind speed in the N time period of a certain height, and converting the average wind speed in the M time period of the height z into the average wind speed in the M time period of a certain height, wherein the certain height is H;

s4, passing the alarm threshold value formula of the instantaneous wind speed in the N time period in the step S1 and combining the wind direction angle theta tested by the anemoscope in the step S2₁Rotation angle theta of gantry crane₂Acquiring an instantaneous wind speed alarm threshold value in N time periods;

s5, comparing the average wind speed in the M time period at the H height in the step S3 with the alarm threshold value of the average wind speed in the M time period in the step S1 to obtain a first result, and comparing the instantaneous wind speed in the N time period at the H height in the step S3 with the wind speed alarm threshold value in the N time period in the step S4 to obtain a second result;

executing corresponding alarm measures according to the first result and the second result;

if any one of the first result and the second result exceeds the corresponding alarm threshold value, executing corresponding alarm measures, wherein the alarm measures comprise ringing and lightening a warning lamp, and if both the first result and the second result exceed the corresponding alarm threshold values, no alarm is given;

and S6, repeating the steps S2-S5 to perform early warning work on the wind speed of the operation of the port portal crane in real time.

As shown in FIG. 1, the M time period is 10min, the N time period is 3s, the H height is 10M, and the alarm threshold value of the 10min average wind speed is 15.8M/s.

As shown in fig. 1, in step S1, an alarm threshold formula for 3S instantaneous wind speed;

θ＝|θ_w-θ_r|

θ_w＝θ₁+θ₂

θ_w＝θ_w 0°≤θ_w＜180°

θ_w＝θ_w-180° 180°≤θ_w＜360°

wherein:

v_c-an alarm threshold, m/s;

v_pparallel to the track alarm threshold, m/s, v_p＝20m/s；

v_vPerpendicular to track alarm threshold, m/s, v_v＝23.5m/s；

Theta-the angle between the wind direction and the track;

θ_w-the angle of the wind direction to the due north direction;

θ₁-anemometer tested wind direction angle;

θ₂gantry crane rotation angle;

θ_rthe track is at an angle to the true north of quadrant 1 or 4.

As shown in fig. 1, in step S2,

real-time wind speed v of height z_zThe equation for the instantaneous wind speed over 3s, which translates to height z, is:

real-time wind speed v of height z_zThe average wind velocity over 10min converted to height z is given by:

convert the instantaneous wind speed within 3s at height z to the instantaneous wind speed within 3s at 10m height:

the 10min average wind speed at height z is converted into a 10min average wind speed at 10m height:

wherein the content of the first and second substances,

v_z-real-time wind speed, m/s, collected z meters high;

v_10-3s-the converted 3s instantaneous wind speed at 10m height, m/s;

v_z-3s-the PLC calculates the processed z meters altitude 3s instantaneous wind speed, m/s;

v_10-10min-10 min average wind speed at 10m height, m/s, after conversion;

v_z-10min-the PLC calculates the processed average wind speed at z meters height of 10min, m/s;

alpha-index, set to 0.12.

On the other hand, as shown in FIG. 1, the application proposes a device for wind speed early warning in the operation of a harbor portal crane, which applies the method for wind speed early warning in the operation of a harbor portal crane, according to claim 1, and comprises an anemoscope, a anemoscope, an electronic compass, an audible and visual alarm, a programmable control module, a 4G data transmission module and an informatization system,

anemoscope output, anemoscope output all are connected with programmable control module input through the circuit, the electron compass output passes through the circuit and is connected with programmable control module input, the audible-visual annunciator input passes through the circuit and is connected with programmable control module output, the information module input is connected with programmable control module output through 4G data transmission module for accept wind speed, wind direction data, alarm signal.

As shown in FIG. 1, the anemoscope and the electronic compass are all arranged at the upper end of the outer side of the crane cab.

Wherein the corresponding model of each electronic component is shown in the following table I,

TABLE 1 electronic Components model number

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.