Weight estimation method for iron tower

Abstract

The invention discloses a weight estimation method for an iron tower, and relates to the technical field of iron tower weight estimation, and the method comprises the following estimation steps: firstly, obtaining the number of components, the positions of the components, the material information of the components, the positions of connecting pieces, and the material information of the connecting pieces of the iron tower; according to the method, by scanning the appearance of the iron tower and the appearance of the component, the thickness of the coating on the outer layer of the component of the iron tower is collected, the weight of the component of the iron tower is calculated according to the density of the coating on the outer layer and the density of the material on the inner layer, and the relation between the core weight parameter of the component and the total weight of the component is analyzed; the method comprises the following steps of: estimating a component mass result, dividing the iron tower into a top part, a middle part and a bottom part by utilizing a core weight ratio of the component, respectively estimating the three parts, then estimating the total weight of the iron tower, realizing the estimation of the weight of the iron tower, analyzing data errors, reducing error influence and obtaining more accurate data.

Description

Technical Field

[0001] The invention relates to the technical field of iron tower weight estimation, in particular to a method for estimating the weight of an iron tower. Background Art

[0002] Power towers, also known as transmission line towers, are tower-shaped buildings used for power transmission. Their structural characteristics are that all types of towers are space truss structures. The rods are mainly composed of single equilateral angle steel or combined angle steel. The materials generally used are Q235 (A3F) and Q345 (16Mn). The rods are connected by rough bolts, which are connected by shear force. The whole tower is composed of angle steel, connecting steel plates and bolts. Individual parts such as tower feet are welded into a combination of several steel plates. Therefore, hot-dip galvanizing, anti-corrosion, transportation and construction are extremely convenient. Estimating the weight of power towers can ensure that the towers have sufficient strength and stability under the design load conditions to avoid safety accidents caused by overload or instability. In addition, through weight estimation, the performance of the tower under different environmental conditions, such as wind load, snow load, etc., can be predicted, so that corresponding protective measures can be taken to extend the service life of the tower.

[0003] However, the current weight estimation of the iron tower is difficult and inaccurate due to its large size and irregular shape. Summary of the invention

[0004] The present invention provides a method for estimating the weight of an iron tower, which can effectively solve the problem in the above background technology that the weight estimation of an iron tower is difficult and inaccurate due to the large volume and irregular shape of the iron tower.

[0005] To achieve the above object, the present invention provides the following technical solution: a method for estimating the weight of an iron tower, comprising the following estimating steps:

[0006] S1. First, obtain the number of components, component positions, component material information, connector positions, connector positions and connector material information of the tower;

[0007] S2. Determine the component to be calculated, scan the component graphics, and obtain the three-dimensional graphics of the component;

[0008] S3, calculating the volume of the component according to the three-dimensional figure of the component, and then calculating the weight of the component;

[0009] S4, selecting components in sequence and calculating the weight of the components;

[0010] S5, scanning the overall structure of the iron tower, obtaining a three-dimensional image of the iron tower, and calculating the volume of the iron tower;

[0011] S6. Estimate the weight of the tower based on the volume ratio of the component to the tower and the weight of the component;

[0012] S7. Modify the estimate based on the surface treatment of the components, the distribution and weight of the connectors, and the weight of special components.

[0013] According to the above technical solution, in S1, the material information of the tower component specifically includes the outer coating, coating density, inner material type, and inner material density, and the coating density and inner material density are recorded as ρ1 and ρ2 respectively.

[0014] According to the above technical solution, in S2, when scanning the tower component, a camera is used to scan the component at the top, bottom, and four directions of southeast, northwest, and northeast, and finally a complete scanned component is formed;

[0015] When scanning the component, the coating position of the outer coating is scanned, and the thickness of the outer coating is scanned by an ultrasonic coating thickness gauge. The thickness of the outer coating of each component is scanned at no less than 3 positions, and the arithmetic average of the scanned thicknesses is taken as the final thickness of the outer coating;

[0016] The overlapping parts between components and between components and connectors shall be scanned at least 3 times, and each scan shall be in a different orientation;

[0017] The structure of the overlapping parts of the components is inferred to determine the shape of the overlapping parts of the components.

[0018] According to the above technical solution, in S3, the overall volume of the three-dimensional component is first calculated by a computer, and then the volume of the coating is calculated according to the coating thickness, and then the volume of the inner layer material of the component excluding the outer coating is calculated.

[0019] According to the above technical solution, in S3, after calculating the volume of the outer coating and the volume of the inner material of the component, the weight of the outer coating and the weight of the inner material are calculated in combination with the density corresponding to the material;

[0020] The sum of the weight of the outer coating and the weight of the inner material is the overall weight of the component.

[0021] According to the above technical solution, in S4, all components that need to be calculated are selected, scanned, measured and calculated in sequence to obtain the actual weight of the required components;

[0022] For components with the same volume and structure, it is sufficient to scan and calculate the weight of one of them;

[0023] When selecting components, divide the tower into three equal sections according to height, namely the top, middle and bottom parts, and select components at the top, middle and bottom of the tower respectively.

[0024] According to the above technical solution, in S5, the entire structure of the iron tower is scanned to determine the distribution position of the calculated components on the iron tower, the iron tower is divided into three sections: the top, the middle and the bottom, and the volume of the iron tower is estimated section by section;

[0025] When estimating the volume, based on the scanned tower, first estimate the horizontal and vertical lengths of each section of the tower in the plan view of each face, then estimate the three-dimensional size of the tower, and then estimate the volume.

[0026] According to the above technical solution, in S6, the proportion of the weight of the components of each section of the iron tower to the weight of each section of the iron tower is calculated by the proportion of the volume of the components of each section of the iron tower to the volume of each section of the iron tower, so as to calculate the weight of each section of the iron tower in turn;

[0027] After the weight of each section of the tower is estimated, the estimated weight of each section is added together to get the weight of the entire tower;

[0028] In S5-S6, Matlab was used to perform multivariate linear regression analysis to obtain the relationship between the core weight parameters of the components and the total weight of the components, and the component weight results were calculated. The weight of each part of the tower was estimated by using the proportion of the core weight of the components in the corresponding position of the tower. Finally, the total weight of the tower was obtained by superimposing the estimates.

[0029] According to the above technical solution, in S7, the estimation process is reviewed, the error of each data and the correlation between the data are analyzed, and then the data error is corrected to complete the correction of the estimation.

[0030] According to the above technical solution, in S7, when analyzing the error of each data, the generation, collection and estimation process of each data is analyzed in sequence to determine the impact of the error generated earlier in the estimation process on the error generated later.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. By measuring the density of the outer coating and the inner material of the power tower and scanning the shape of the component, the thickness of the coating and the material are collected, and the mass of the outer coating and the mass of the inner material are calculated separately. This is more accurate than directly calculating the weight of the component, thereby obtaining component weight data with smaller errors, providing convenience for subsequent tower weight estimation and making subsequent estimates more accurate.

[0033] 2. By dividing the power tower into the top, middle and bottom parts, the volume and weight of the components of each part are calculated respectively, the weight of each part of the tower is estimated respectively, and finally the estimated weight of each part of the tower is superimposed to obtain the total weight of the tower. This not only reduces the complexity of the calculation, but also can be estimated separately according to the structure of different positions of the tower, thereby increasing the accuracy of the estimate.

[0034] 3. By tracing the data generation, collection and estimation process and analyzing the correlation between the data, we can understand in detail the source of estimation error, the connection and influence between the errors, so as to correct the errors in the tower weight estimation, reduce the impact of the errors on the estimation results, and reduce the impact of the errors on the estimation, which can help people quickly estimate the tower weight.

[0035] In summary, by scanning the shape of the tower and its components, the thickness of the outer coating of the tower components is collected, and the weight of the tower components is calculated based on the density of the outer coating and the inner material. The relationship between the core weight parameters of the components and the total weight of the components is analyzed through multiple linear regression analysis, and the component quality results are estimated. Then, using the core weight proportion of the components, the tower is divided into three parts: the top, the middle and the bottom, and the total weight of the tower is estimated to estimate the weight of the tower. The data error is analyzed to reduce the impact of the error and obtain more accurate data. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0037] In the attached picture:

[0038] Figure 1 It is a flow chart of the tower weight estimation steps of the present invention. DETAILED DESCRIPTION

[0039] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0040] Example: Figure 1 As shown, the present invention provides a technical solution, a method for estimating the weight of an iron tower, comprising the following estimating steps:

[0041] S1. First, obtain the number of components, component positions, component material information, connector positions, connector positions and connector material information of the tower;

[0042] S2. Determine the component to be calculated, scan the component graphics, and obtain the three-dimensional graphics of the component;

[0043] S3, calculating the volume of the component according to the three-dimensional figure of the component, and then calculating the weight of the component;

[0044] S4, selecting components in sequence and calculating the weight of the components;

[0045] S5, scanning the overall structure of the iron tower, obtaining a three-dimensional image of the iron tower, and calculating the volume of the iron tower;

[0046] S6. Estimate the weight of the tower based on the volume ratio of the component to the tower and the weight of the component;

[0047] S7. Modify the estimate based on the surface treatment of the components, the distribution and weight of the connectors, and the weight of special components.

[0048] According to the above technical solution, in S1, the material information of the tower component specifically includes the outer coating, coating density, inner material type, and inner material density, and the coating density and inner material density are recorded as ρ1 and ρ2 respectively.

[0049] According to the above technical solution, in S2, when scanning the tower component, a camera is used to scan the component at the top, bottom, and four directions of southeast, northwest, and northeast, and finally a complete scanned component is formed to obtain the shape data of the component;

[0050] When scanning the component, the coating position of the outer layer of coating is scanned, and the thickness of the outer layer of coating is scanned by an ultrasonic coating thickness gauge to obtain the thickness data of the outer layer of coating, and then the thickness data of the inner layer of material is obtained through the scanned shape data. The scanning positions of the outer layer of coating thickness of each component are 4, and the arithmetic average of the scanned thickness is taken as the final outer layer of coating thickness;

[0051] The overlapping parts between components and between components and connectors are scanned 4 times, and each scan needs to change a different orientation;

[0052] The structure of the overlapping parts of the components is inferred to determine the shape of the overlapping parts of the components.

[0053] According to the above technical solution, in S3, the overall volume of the three-dimensional component is first calculated by a computer, and then the volume of the coating is calculated according to the coating thickness, and then the volume of the inner layer material of the component excluding the outer coating is calculated.

[0054] According to the above technical solution, in S3, after calculating the volume of the outer coating and the volume of the inner material of the component, the weight of the outer coating and the weight of the inner material are calculated in combination with the density corresponding to the material;

[0055] The sum of the weight of the outer coating and the weight of the inner material is the overall weight of the component. By calculating the outer coating and the inner material of the component separately, more accurate weight data can be calculated based on the actual density and volume, providing a more accurate reference for subsequent estimates and reducing estimation errors.

[0056] According to the above technical solution, in S4, all components that need to be calculated are selected, scanned, measured and calculated in sequence, and the actual weight of the required components is obtained;

[0057] For components with the same volume and structure, it is sufficient to scan and calculate the weight of one of them;

[0058] When selecting components, the tower is divided into three sections according to height, namely the top, middle and bottom parts. Components are selected at the top, middle and bottom of the tower respectively, and the tower is estimated in sections. Since the volume and shape of each part are different, the distribution and shape of the components are also questionable. Therefore, after the tower is divided into sections, the error in calculating the proportion of components in each part of the tower is smaller, thereby reducing the subsequent estimation error. At the same time, it can reduce the complexity of the overall calculation and alleviate the difficulty of the calculation.

[0059] According to the above technical solution, in S5, the entire structure of the tower is scanned to determine the distribution position of the calculated components on the tower, the tower is divided into three sections: the top, the middle and the bottom, and the volume of the tower is estimated section by section;

[0060] When estimating the volume, based on the scanned tower, first estimate the horizontal and vertical lengths of each section of the tower in the plan view of each face, then estimate the three-dimensional size of the tower, and then estimate the volume.

[0061] According to the above technical solution, in S6, the proportion of the weight of the components of each section of the iron tower to the weight of each section of the iron tower is calculated by the proportion of the volume of the components of each section of the iron tower to the volume of each section of the iron tower, so as to calculate the weight of each section of the iron tower in turn;

[0062] After the weight of each section of the tower is estimated, the estimated weight of each section is added together to get the weight of the entire tower;

[0063] In S5-S6, Matlab was used to perform multivariate linear regression analysis to obtain the relationship between the core weight parameters of the components and the total weight of the components, and the component weight results were calculated. The weight of each part of the tower was estimated by using the proportion of the core weight of the components in the corresponding position of the tower. Finally, the total weight of the tower was obtained by superimposing the estimates.

[0064] According to the above technical solution, in S7, the estimation process is reviewed, the error of each data is analyzed, the correlation between the data is analyzed, and then the data error is corrected to complete the correction of the estimation.

[0065] According to the above technical solution, in S7, when analyzing the error of each data, the generation, collection, and estimation process of each data are analyzed in sequence to determine the influence of the error generated earlier on the error generated later in the estimation process;

[0066] By analyzing the errors generated in the process of data generation, collection and estimation, the impact of the errors is determined, and correction operations are performed to make the final estimate more accurate.

[0067] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for estimating the weight of an iron tower, characterized in that: The estimation steps include the following: S1. First, obtain the number of components, component positions, component material information, connector positions, connector positions and connector material information of the tower; S2. Determine the component to be calculated, scan the component graphics, and obtain the three-dimensional graphics of the component; S3, calculating the volume of the component according to the three-dimensional figure of the component, and then calculating the weight of the component; S4, selecting components in sequence and calculating the weight of the components; S5, scanning the overall structure of the iron tower, obtaining a three-dimensional image of the iron tower, and calculating the volume of the iron tower; S6. Estimate the weight of the tower based on the volume ratio of the component to the tower and the weight of the component; S7. Modify the estimate based on the surface treatment of the components, the distribution and weight of the connectors, and the weight of special components.

2. A method for estimating the weight of an iron tower according to claim 1, characterized in that: In S1, the material information of the tower component specifically includes the outer coating, coating density, inner material type, and inner material density, and the coating density and inner material density are recorded as ρ1 and ρ2, respectively.

3. A method for estimating the weight of an iron tower according to claim 1, characterized in that: In S2, when scanning the tower component, a camera is used to scan the component at the top, bottom, and four lateral directions of east, south, west, and north, and finally a complete scanned component is formed; When scanning the component, the coating position of the outer coating is scanned, and the thickness of the outer coating is scanned by an ultrasonic coating thickness gauge. The thickness of the outer coating of each component is scanned at no less than 3 positions, and the arithmetic average of the scanned thicknesses is taken as the final thickness of the outer coating; The overlapping parts between components and between components and connectors shall be scanned at least 3 times, and each scan shall be in a different orientation; The structure of the overlapping parts of the components is inferred to determine the shape of the overlapping parts of the components.

4. A method for estimating the weight of an iron tower according to claim 1, characterized in that: In S3, the computer first calculates the overall volume of the three-dimensional component, then calculates the volume of the coating according to the coating thickness, and then calculates the volume of the inner layer material of the component excluding the outer layer of coating.

5. A method for estimating the weight of an iron tower according to claim 4, characterized in that: In S3, after calculating the volume of the outer coating and the volume of the inner material of the component, the weight of the outer coating and the weight of the inner material are calculated in combination with the density corresponding to the material; The sum of the weight of the outer coating and the weight of the inner material is the overall weight of the component.

6. A method for estimating the weight of an iron tower according to claim 1, characterized in that: In S4, all components to be calculated are selected, and scanned, measured and calculated in sequence to obtain the actual weight of the required components; For components with the same volume and structure, it is sufficient to scan and calculate the weight of one of them; When selecting components, divide the tower into three equal sections according to height, namely the top, middle and bottom parts, and select components at the top, middle and bottom of the tower respectively.

7. A method for estimating the weight of an iron tower according to claim 1, characterized in that: In S5, the entire structure of the tower is scanned to determine the distribution positions of the calculated components on the tower, the tower is divided into three sections: the top, the middle and the bottom, and the volume of the tower is estimated section by section; When estimating the volume, based on the scanned tower, first estimate the horizontal and vertical lengths of each section of the tower in the plan view of each face, then estimate the three-dimensional size of the tower, and then estimate the volume.

8. A method for estimating the weight of an iron tower according to claim 7, characterized in that: In S6, the proportion of the weight of the components of each section of the iron tower to the weight of each section of the iron tower is calculated by the proportion of the volume of the components of each section of the iron tower to the volume of each section of the iron tower, thereby calculating the weight of each section of the iron tower in turn; After the weight of each section of the tower is estimated, the estimated weight of each section is added together to get the weight of the entire tower; In S5-S6, Matlab was used to perform multivariate linear regression analysis to obtain the relationship between the core weight parameters of the components and the total weight of the components, and the component weight results were calculated. The weight of each part of the tower was estimated by using the proportion of the core weight of the components in the corresponding position of the tower. Finally, the total weight of the tower was obtained by superimposing the estimates.

9. A method for estimating the weight of an iron tower according to claim 1, characterized in that: In S7, the estimation process is reviewed, the error of each data and the correlation between the data are analyzed, and then the data error is corrected to complete the correction of the estimation.

10. A method for estimating the weight of an iron tower according to claim 9, characterized in that: In S7, when analyzing the error of each data item, the generation, collection and estimation process of each data item are analyzed in sequence to determine the influence of the error generated earlier on the error generated later in the estimation process.

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