A hydraulic support structure piece strength checking method, system and storage medium

Abstract

The present application relates to the technical field of coal mining, especially relates to a hydraulic support structural member strength checking method and system and a storage medium, applied to strength detection of a large hydraulic support, comprising: creating a corresponding reference surface and a corresponding three-dimensional coordinate system based on three-dimensional model data of a structural member; when receiving a structural member segmentation instruction, establishing at least two parallel cross sections parallel to the reference surface according to a pre-set cross section distance; when receiving a safety evaluation instruction, obtaining a safety factor of each parallel cross section of the structural member according to the three-dimensional model data and the corresponding three-dimensional coordinate system of the structural member, and judging whether the strength of the structural member is qualified according to the safety factor of each parallel cross section. The beneficial effect is that the method is more suitable for strength detection of a large hydraulic support, the result is accurate, the operation is simple, parallel calculation can be performed, and time is saved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal mining, and particularly relates to a hydraulic support structure strength checking method and system and a storage medium. BACKGROUND

[0002] In the process of underground coal mining, the hydraulic support is an important supporting device, and it is very important to confirm the ability of the hydraulic support to bear external force, that is, the supporting strength. The supporting strength of the hydraulic support mainly includes compression strength, buckling strength and shear strength.

[0003] At present, the supporting strength checking method of the hydraulic support is realized based on CAD software, and the checking process needs to use theoretical formula to calculate each closed figure and then accumulate the centroid and inertia tensor. This method needs to input multiple parameters and geometric sizes, and needs to calculate each figure, which is relatively cumbersome to operate, takes a long time to calculate, and is not accurate enough for irregular figure calculation. SUMMARY

[0004] (I) Technical problems to be solved

[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present application provides a hydraulic support structure strength checking method, system and storage medium, which solves the technical problems that the operation is cumbersome, the calculation time is long, and the calculation for irregular figures is not accurate enough for the hydraulic support supporting strength checking method through CAD software.

[0006] (II) Technical solutions

[0007] In order to achieve the above-mentioned purposes, the main technical solutions adopted by the present application include:

[0008] In a first aspect, the present application provides a hydraulic support structure strength checking method, which is applied to the strength detection of a large hydraulic support, and the method comprises:

[0009] S11, when receiving a reference surface construction instruction input through a software interface, creating a reference surface corresponding to any structure of the hydraulic support based on pre-constructed three-dimensional model data of the structure;

[0010] The reference surface is a cross section passing through the reference axis of the structure; and the reference axis is a connecting line between the positions of the centers of two columnar sockets corresponding to the structure.

[0011] S12, when receiving a coordinate system construction instruction input through a software interface, constructing a three-dimensional coordinate system corresponding to any structure of the hydraulic support based on pre-constructed three-dimensional model data of the structure;

[0012] S13, when receiving the structure segment instruction input through the software interface, at least two parallel sections parallel to the reference plane are established according to the pre-set section distance;

[0013] S14, when receiving the safety evaluation instruction input through the software interface, the safety factor of each parallel section of the structure is obtained according to the corresponding three-dimensional model data and the corresponding three-dimensional coordinate system of the structure, and whether the strength of the structure is qualified is judged according to the safety factor of each parallel section.

[0014] Optionally, the S14 comprises:

[0015] When receiving the safety evaluation instruction input through the software interface, the corresponding horizontal length size and vertical height size of each parallel section and the distance between the lower end surface of the parallel section and the reference axis are obtained according to the corresponding three-dimensional model data and the corresponding three-dimensional coordinate system of the structure; the reference axis is the connecting line of the two column socket center points;

[0016] According to the corresponding horizontal length size, vertical height size and distance between the lower end surface of each parallel section and the reference axis, and the pre-set formula one, the corresponding section centroid of each parallel section is obtained; the formula one is:

[0017]

[0018] Wherein, X i is the section centroid corresponding to the parallel section with index i, B i is the horizontal length size of the parallel section with index i, H i is the vertical height size corresponding to the parallel section with index i, Y i is the distance between the lower end surface of the parallel section with index i and the reference axis;

[0019] According to the corresponding horizontal length size, vertical height size and distance between the lower end surface of each parallel section and the reference axis, and the corresponding section centroid of each parallel section and the pre-set formula two, the corresponding inertia tensor of each parallel section is obtained; the formula two is:

[0020]

[0021] Wherein, I i is the inertia tensor corresponding to the parallel section with index i;

[0022] According to the corresponding inertia tensor of each parallel section, the safety factor of each parallel section is obtained to judge whether the strength of the structure is qualified.

[0023] Optionally, the S13 comprises:

[0024] When receiving the structure segmentation instruction input through the software interface of the Creo software, according to the cross-section attribute analysis algorithm pre-set by the Creo software, and the three-dimensional coordinate system and the three-dimensional model data corresponding to the structure, the cross-section centroid and the inertia tensor corresponding to each cross-section are obtained;

[0025] According to the cross-section centroid and the inertia tensor corresponding to each cross-section, the safety factor of each parallel cross-section is obtained to determine whether the strength of the structure is qualified.

[0026] Optionally, the S14 further comprises:

[0027] According to the three-dimensional coordinate system and the three-dimensional model data corresponding to the structure, the horizontal length dimension and the vertical height dimension corresponding to the reference surface are obtained;

[0028] According to the horizontal length dimension and the vertical height dimension corresponding to the reference surface, the cross-section centroid corresponding to the reference surface is obtained;

[0029] According to the corresponding horizontal length dimension and vertical height dimension, and the cross-section centroid corresponding to the reference surface, the inertia tensor corresponding to the reference surface is obtained.

[0030] Optionally, the S14, according to the inertia tensor corresponding to each parallel cross-section, obtains the safety factor of each parallel cross-section to determine whether the strength of the structure is qualified, comprising:

[0031] According to the three-dimensional coordinate system and the three-dimensional model data corresponding to the structure, the distance of each parallel cross-section from the first end of the structure, the distance from the second end of the structure, and the distance from the reference surface are obtained;

[0032] According to the distance of each parallel cross-section from the first end of the structure, the distance from the second end of the structure, and the distance from the reference surface corresponding to each parallel cross-section and the pre-set formula three, the cross-section bending moment corresponding to each parallel cross-section is obtained; the formula three is:

[0033]

[0034] wherein M i is the cross-section bending moment corresponding to the parallel cross-section of index i, L 1,i is the distance of the parallel cross-section of index i from the first end of the structure, L 2,i is the distance of the parallel cross-section of index i from the second end of the structure, L n,i is the distance of the parallel cross-section of index i from the reference surface, F y is the pre-set support component force;

[0035] According to the horizontal length dimension and the vertical height dimension corresponding to each parallel cross-section, and the pre-set position screening strategy, the to-be-detected position corresponding to each parallel cross-section is obtained.

[0036] According to the distance between the cross-section centroid corresponding to each parallel cross-section and the to-be-detected position, a distance between the cross-section centroid corresponding to each parallel cross-section and the to-be-detected position is obtained;

[0037] According to the distance between the cross-section centroid corresponding to each parallel cross-section and the to-be-detected position, a distance between the cross-section centroid corresponding to each parallel cross-section and the to-be-detected position is obtained;

[0038]

[0039] wherein, n i is the safety factor corresponding to the parallel cross-section of the index i, σ b is a pre-set allowable stress value, Z i is the longitudinal coordinate of the cross-section centroid corresponding to each parallel cross-section;

[0040] According to the safety factor corresponding to each parallel cross-section and a pre-set safety factor threshold, whether the strength of the structural member is qualified is judged.

[0041] Optionally, the S14 further includes:

[0042] According to the three-dimensional coordinate system and the three-dimensional model data corresponding to the structural member, a distance between the reference surface and the first end of the structural member and a distance between the reference surface and the second end of the structural member are obtained;

[0043] According to the distance between the reference surface and the first end of the structural member, the distance between the reference surface and the second end of the structural member and a pre-set formula four, a cross-section bending moment corresponding to the reference surface is obtained; the formula four is:

[0044]

[0045] wherein, L 1,0 is the distance between the reference surface and the first end of the structural member, L 2,0 is the distance between the reference surface and the second end of the structural member, F y is a pre-set support component force;

[0046] According to the horizontal length dimension and the vertical height dimension corresponding to the reference surface and a pre-set position screening strategy, a to-be-detected position corresponding to the reference surface is obtained;

[0047] According to the distance between the cross-section centroid corresponding to each parallel cross-section and the to-be-detected position, a distance between the cross-section centroid corresponding to each parallel cross-section and the to-be-detected position is obtained;

[0048] According to the distance between the cross-section centroid corresponding to each parallel cross-section and the to-be-detected position, a distance between the cross-section centroid corresponding to each parallel cross-section and the to-be-detected position is obtained;

[0049] Optionally, the S14 further comprises:

[0050] According to the safety factor of each parallel section, a safety factor curve corresponding to the structural member is generated to assist in judging whether the strength of any position of the structural member is qualified.

[0051] Optionally, the S13 comprises:

[0052] When receiving the structural member segmentation instruction input through the software interface, parallel sections parallel to the reference surface are established on both sides of the reference surface according to the preset section distance, and the distance between each parallel section and the reference surface is the section distance or an integer multiple of the section distance.

[0053] In a second aspect, an embodiment of the present application provides a hydraulic support structural member strength checking system, comprising a memory, a processor and a computer program stored in the memory, and the processor executes the computer program to realize the hydraulic support structural member strength checking method.

[0054] In a third aspect, an embodiment of the present application provides a computer readable storage medium, which stores a computer program, and the computer program is executed by a processor to realize the hydraulic support structural member strength checking method.

[0055] (III) Beneficial Effects

[0056] The hydraulic support structural member strength checking method provided by the present application is more suitable for strength detection of large hydraulic supports, and can ensure accurate results, simple operation, parallel calculation and time saving. BRIEF DESCRIPTION OF DRAWINGS

[0057] Figure 1 A hydraulic support structural member strength checking method flowchart is provided for the embodiment of the present application.

[0058] Figure 2 A top beam three-dimensional model data schematic diagram is provided for the embodiment of the present application.

[0059] Figure 3 A top beam column nest ball center point position schematic diagram is provided for the embodiment of the present application.

[0060] Figure 4 A top beam reference line position schematic diagram is provided for the embodiment of the present application.

[0061] Figure 5 A top beam three-dimensional coordinate system plane schematic diagram is provided for the embodiment of the present application.

[0062] Figure 6A top beam parallel section centroid and inertia tensor acquisition schematic diagram provided for an embodiment of the present application;

[0063] Figure 7 A top beam parallel section top surface interception result schematic diagram provided for an embodiment of the present application;

[0064] Figure 8 A top beam parallel section side surface interception result schematic diagram provided for an embodiment of the present application;

[0065] Figure 9 A hydraulic support top beam plane calculation main reinforcement and top plate stress value curve diagram provided for an embodiment of the present application;

[0066] Figure 10 A top beam plane calculation main reinforcement and top plate safety factor curve diagram provided for an embodiment of the present application. DETAILED DESCRIPTION

[0067] In order to better explain the present application, so as to be understood, the following will be combined with the drawings, through specific embodiments, the present application is described in detail.

[0068] The hydraulic support structure strength checking method provided by the embodiment of the present application is calculated by decomposing the structure into multiple sections, which is more suitable for strength detection of large hydraulic supports compared with the prior art, and can save time while ensuring the accuracy of the results.

[0069] In order to better understand the above technical solutions, the exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a clearer, more thorough understanding of the present application and to convey the complete scope of the present application to those skilled in the art.

[0070] Embodiment 1

[0071] The hydraulic support structure strength checking method provided by the embodiment, as shown in Figure 1 , the method is applied to the strength detection of large hydraulic supports, and the method comprises:

[0072] S11, when receiving the reference surface construction instruction input through the software interface, based on the pre-constructed three-dimensional model data of any structure of the hydraulic support, the reference surface corresponding to the structure is created;

[0073] The reference surface is a cross section passing through the reference axis of the structure; the reference axis is a connecting line between the positions of the two column socket center points corresponding to the structure;

[0074] S12, when receiving the coordinate system construction instruction input through the software interface, constructing the three-dimensional coordinate system corresponding to any structural part of the hydraulic support based on the three-dimensional model data of the structural part pre-constructed;

[0075] S13, when receiving the structural part segmentation instruction input through the software interface, establishing at least two parallel cross sections parallel to the reference surface according to the pre-set cross section distance;

[0076] S14, when receiving the safety evaluation instruction input through the software interface, obtaining the safety factor of each parallel cross section of the structural part according to the three-dimensional model data and the corresponding three-dimensional coordinate system of the structural part, and judging whether the strength of the structural part is qualified according to the safety factor of each parallel cross section.

[0077] The hydraulic support structural part strength checking method provided in the embodiment is suitable for strength detection of large hydraulic supports, and can ensure accurate results while being simple to operate and saving time.

[0078] Embodiment 2

[0079] The embodiment provides a hydraulic support structural part strength checking method, which uses Creo software to design a three-dimensional model of a hydraulic support and perform strength calculation on any structural part of the hydraulic support. The structural parts of the hydraulic support include a top beam, a base, a shield beam and a tail beam.

[0080] Taking strength detection of a hydraulic support top beam as an example, the method specifically includes:

[0081] The Creo software is used to design a three-dimensional model of the hydraulic support top beam, as shown in Figure 2 , that is, three-dimensional model data of the hydraulic support top beam is obtained;

[0082] A ball center point is created on each of the two column holes of the hydraulic support top beam, the ball center point position is as shown in Figure 3 , and a plane passing through the positions of the two ball center points is created, the reference axis of the plane is as shown in Figure 4 , and the column hole cross section is taken as the reference surface (the base reference surface is created in the same way as the top beam, and the shield beam is taken as the reference surface at the center of the hinge hole at the link between the shield beam and the connecting rod, and the tail beam is similar to the shield beam).

[0083] A new three-dimensional coordinate system is created at the center position of the first end edge of the top plate of the top beam, the coordinate origin of the coordinate system is the center position of the first end edge of the top plate of the top beam, the X axis of the coordinate system is the direction of the first end edge of the top plate of the top beam, the Y axis is perpendicular to the direction of the X axis, and the Z axis is the vertical direction, and the three-dimensional coordinate system is as shown in Figure 5 .

[0084] Under the module of analysis in Creo software, select the cross-section attribute in the quality attribute, select the created parallel cross-section and coordinate system, and the cross-section centroid and inertia tensor of the parallel cross-section can be obtained, as shown in Figure 6 ;

[0085] Based on the rapid calculation of the cross-section centroid and inertia tensor of multiple parallel cross-sections of the Creo software, the cross-section centroid and inertia tensor of any parallel cross-section before and after the reference surface can be calculated based on the created columnar nest cross-section. For example, 9 parallel cross-sections are selected before and after the reference surface, as shown in Figure 7 and Figure 8 , the cross-section centroid and inertia tensor of each parallel cross-section is obtained, and the stress value and safety factor on each parallel cross-section are obtained through the pre-set safety factor calculation algorithm.

[0086] In order to save calculation time, the cross-section bending moment, stress and safety factor are written into a table, and the relevant formula can be quickly called through the Creo software, and the corresponding stress value and safety factor can be quickly obtained, and the data is made into a line graph, which is convenient for intuitive observation of the strength weakness of each position of the roof beam, so that the designer can optimize the weak position.

[0087] Specifically, when the reference surface construction instruction input by the user is received through the software interface of the Creo software, the three-dimensional model data of any structural part of the hydraulic support is constructed based on the three-dimensional model data of any structural part of the hydraulic support, and the reference surface corresponding to the structural part is created; the reference surface is a cross-section passing through the reference axis of the structural part; the reference axis is a connecting line between the two columnar nest ball center points corresponding to the structural part;

[0088] When the coordinate system construction instruction input by the user is received through the software interface of the Creo software, the three-dimensional model data of any structural part of the hydraulic support is constructed based on the three-dimensional model data of any structural part of the hydraulic support, and the three-dimensional coordinate system corresponding to the structural part is constructed;

[0089] When the structural part segmentation instruction input through the software interface of the Creo software is received, parallel cross-sections parallel to the reference surface are established on both sides of the reference surface according to the pre-set cross-section distance, and the distance between each parallel cross-section and the reference surface is the cross-section distance or an integer multiple of the cross-section distance.

[0090] When the safety evaluation instruction input through the software interface of the Creo software is received, the horizontal length dimension and vertical height dimension corresponding to each parallel cross-section and the distance between the lower end surface of the parallel cross-section and the reference axis are obtained according to the three-dimensional model data and the corresponding three-dimensional coordinate system of the structural part; the reference axis is a connecting line between the two columnar nest ball center points;

[0091] According to the horizontal length size, the vertical height size and the distance between the lower end surface of each parallel section and the reference axis, and a preset formula one, a section centroid corresponding to each parallel section is obtained; the formula one is:

[0092]

[0093] wherein, X i is the section centroid corresponding to the parallel section with index i, B i is the horizontal length size of the parallel section with index i, H i is the vertical height size corresponding to the parallel section with index i, Y i is the distance between the lower end surface of the parallel section with index i and the reference axis;

[0094] According to the horizontal length size, the vertical height size and the distance between the lower end surface of each parallel section and the reference axis, and the section centroid corresponding to each parallel section and a preset formula two, an inertia tensor corresponding to each parallel section is obtained; the formula two is:

[0095]

[0096] wherein, I i is the inertia tensor corresponding to the parallel section with index i;

[0097] and, according to the three-dimensional coordinate system and the three-dimensional model data corresponding to the structural member, a horizontal length size and a vertical height size corresponding to the reference surface are obtained;

[0098] According to the horizontal length size and the vertical height size corresponding to the reference surface, a section centroid corresponding to the reference surface is obtained;

[0099] According to the horizontal length size and the vertical height size, and the section centroid corresponding to the reference surface, an inertia tensor corresponding to the reference surface is obtained.

[0100] According to the three-dimensional coordinate system and the three-dimensional model data corresponding to the structural member, a distance between each parallel section and the first end of the structural member, a distance between each parallel section and the second end of the structural member, and a distance between each parallel section and the reference surface are obtained;

[0101] According to the distance between each parallel section and the first end of the structural member, the distance between each parallel section and the second end of the structural member, and the distance between each parallel section and the reference surface, and a preset formula three, a section bending moment corresponding to each parallel section is obtained; the formula three is:

[0102]

[0103] wherein, M i is the section bending moment corresponding to the parallel section with index i, L1,i L is the distance between the parallel section of index i and the first end of the structural member 2,i L is the distance between the parallel section of index i and the second end of the structural member n,i F is the distance between the parallel section of index i and the reference plane y F is the preset support component force

[0104] According to the horizontal length dimension and the vertical height dimension corresponding to each parallel section, and the preset position screening strategy, a to-be-detected position corresponding to each parallel section is obtained.

[0105] According to the section centroid corresponding to each parallel section and the to-be-detected position, a distance between the to-be-detected position and the section centroid corresponding to each parallel section is obtained.

[0106] According to the distance between the to-be-detected position and the section centroid corresponding to each parallel section, the section moment and the inertia tensor, and the preset formula four, a safety factor corresponding to each parallel section is obtained; the formula four is:

[0107]

[0108] Wherein, L i σ is the safety factor corresponding to the parallel section of index i b Z is the preset allowable stress value i Y is the longitudinal coordinate of the section centroid corresponding to each parallel section

[0109] According to the safety factor corresponding to each parallel section, and the preset safety factor threshold, whether the strength of the structural member is qualified is judged.

[0110] And, according to the three-dimensional coordinate system and the three-dimensional model data corresponding to the structural member, the distance between the reference plane and the first end of the structural member, and the distance between the reference plane and the second end of the structural member are obtained.

[0111] According to the distance between the reference plane and the first end of the structural member, the distance between the reference plane and the second end of the structural member, and the preset formula four, a section moment corresponding to the reference plane is obtained; the formula four is:

[0112]

[0113] Wherein, L 1,0 L is the distance between the reference plane and the first end of the structural member 2,0 L is the distance between the reference plane and the second end of the structural member y F is the preset support component force

[0114] According to the horizontal length dimension and the vertical height dimension corresponding to the datum plane, and a preset position screening strategy, a to-be-detected position corresponding to the datum plane is obtained;

[0115] According to the cross-sectional centroid corresponding to the datum plane and the to-be-detected position, a distance between the to-be-detected position and the cross-sectional centroid corresponding to the datum plane is obtained;

[0116] According to the distance between the to-be-detected position and the cross-sectional centroid corresponding to the datum plane, the cross-sectional bending moment, and the inertia tensor, a safety factor corresponding to the datum plane is obtained.

[0117] According to the safety factor / cross-sectional centroid of each parallel cross section, a safety factor curve corresponding to the structural member is generated to assist in judging whether the strength of any position of the structural member is qualified.

[0118] Based on the above steps, a hydraulic support roof beam plane calculation main reinforcement and roof stress value curve is obtained as shown in Figure 9 , and a hydraulic support roof beam plane calculation main reinforcement and roof safety factor curve is obtained as shown in Figure 10 .

[0119] The hydraulic support structural member strength checking method provided in the embodiment decomposes the structural member into multiple cross sections for calculation, is more suitable for strength detection of large hydraulic supports compared with the prior art, is simple to operate while ensuring accurate results, can be calculated in parallel, and saves time.

[0120] Embodiment 3

[0121] Based on the hydraulic support structural member strength checking method provided in Embodiment 1 or Embodiment 2, a datum point identification method is provided, which is realized based on a pre-trained datum point identification model; the method comprises: inputting three-dimensional model data of any structural member of a hydraulic support into the datum point identification model to obtain two datum points (i.e., the center positions of the column sockets) corresponding to the structural member.

[0122] The datum point identification model is used to intercept an original image of a preset plane of three-dimensional model data of a target structural member through Creo software;

[0123] The original image is subjected to gray scale processing based on a pre-set gray scale formula to obtain a corresponding gray scale image; the expression of the gray scale formula is:

[0124] Gray t =0.2989R t +0.5870G t +0.1140B t ;

[0125] Wherein, R, G, B are respectively the values of red, green and blue channels, t is the index of the pixel point, and Gray is the output gray value.

[0126] According to the pre-set Sobel operator, the gray-scale image is planarly convolved to obtain the horizontal and vertical luminance difference approximation values corresponding to the gray-scale image; the horizontal and vertical matrices of the Sobel operator are both 3*3.

[0127] Based on the horizontal and vertical luminance difference approximation values corresponding to the gray-scale image, the gradient amplitude value corresponding to each pixel point position in the smoothed gray-scale image is obtained.

[0128] Based on the gradient amplitude value corresponding to each pixel point position in the smoothed gray-scale image, and the pre-set high gradient threshold and low gradient threshold, the smoothed gray-scale image is edge segmented to generate a target image with two edge frames.

[0129] Based on the pre-set Hough straight line detection algorithm, the edge point coordinates corresponding to each edge frame are obtained.

[0130] Based on the edge point coordinates corresponding to each edge frame, the positions of two reference points in the original image are obtained; specifically, based on the edge point coordinates corresponding to each edge frame, and the pre-set center point coordinate fitting algorithm, the positions of two reference points in the original image are obtained; the center point coordinate fitting algorithm is:

[0131]

[0132] Wherein, (x j ,y j ) is the edge point coordinate, j is the index, (x0,y0) is the center point coordinate corresponding to the edge frame, and L is the distance between the two edge points farthest apart on the edge frame.

[0133] The reference point recognition model includes a detection model obtained by training a YOLO model on original images with labeled reference points.

[0134] The reference point recognition method provided in this embodiment provides an efficient and accurate reference point position determination method, and improves the accuracy and convenience of the strength detection of the hydraulic support structure.

[0135] Embodiment 4

[0136] The embodiment provides a hydraulic support structure strength checking system, which includes a memory, a processor and a computer program stored in the memory, and the processor executes the computer program to realize the hydraulic support structure strength checking method of the embodiment 1 or the embodiment.

[0137] Embodiment 5

[0138] The embodiment provides a computer readable storage medium, which stores a computer program. The computer program is executed by a processor to implement the hydraulic support structure strength checking method in the embodiment 1 or the embodiment 2.

[0139] In the description of the present application, it should be understood that the terms "first", "second" are used only for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0140] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0141] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature, which can be directly above or obliquely above the first feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature is "below", "under" and "under" the second feature, which can be directly below or obliquely below the first feature, or only indicates that the horizontal height of the first feature is lower than that of the second feature.

[0142] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of the different embodiments or examples without contradiction.

[0143] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and that modifications, substitutions, replacements and variations of the above-described embodiments can be made by those skilled in the art within the scope of the present application.

Claims

1. A method of checking the strength of a hydraulic support structure member, characterized by, The method is applied to strength detection of large hydraulic support, and the method comprises the following steps: S11, when receiving a reference surface construction instruction input through a software interface, creating a reference surface corresponding to any structural member of a hydraulic support based on three-dimensional model data of the structural member; The reference surface is a cross section passing through a reference axis of the structural member; the reference axis is a connecting line of two ball center points corresponding to the structural member; S12, when receiving a coordinate system construction instruction input through the software interface, constructing a three-dimensional coordinate system corresponding to any structural member of the hydraulic support based on three-dimensional model data of the structural member; S13, when receiving a structural member segmentation instruction input through the software interface, establishing at least two parallel cross sections parallel to the reference surface according to a preset cross section distance; S14, when receiving a safety evaluation instruction input through the software interface, obtaining a safety factor of each parallel cross section of the structural member according to the three-dimensional model data and the three-dimensional coordinate system corresponding to the structural member, and judging whether the strength of the structural member is qualified according to the safety factor of each parallel cross section.

2. The hydraulic support structure member strength checking method according to claim 1, wherein The S14 comprises: When receiving a safety evaluation instruction input through the software interface, obtaining a horizontal length size and a vertical height size corresponding to each parallel cross section and a distance between a lower end surface of the parallel cross section and a reference axis according to the three-dimensional model data and the three-dimensional coordinate system corresponding to the structural member; the reference axis is a connecting line of two ball center points; Obtaining a cross section centroid corresponding to each parallel cross section according to the horizontal length size, the vertical height size and the distance between the lower end surface of the parallel cross section and the reference axis of each parallel cross section and a preset formula one; the formula one is: wherein X i is the cross-section centroid corresponding to the parallel section indexed i, B i is the horizontal length dimension of the parallel section indexed i, H i is the vertical height dimension corresponding to the parallel section indexed i, Y i is the distance of the lower end surface of the parallel section indexed i from the reference axis; Obtaining an inertia tensor corresponding to each parallel cross section according to the horizontal length size, the vertical height size and the distance between the lower end surface of the parallel cross section and the reference axis of each parallel cross section, the cross section centroid corresponding to the parallel cross section and a preset formula two; the formula two is: where I i is the inertia tensor corresponding to the parallel section with index i; Obtaining a safety factor of each parallel cross section according to the inertia tensor corresponding to each parallel cross section to judge whether the strength of the structural member is qualified.

3. The hydraulic support structure member strength checking method according to claim 1, characterized by, The S13 comprises: When receiving a structural member segmentation instruction input through a software interface of Creo software, obtaining a cross section centroid and an inertia tensor corresponding to each cross section according to a cross section attribute analysis algorithm preset by the Creo software, the three-dimensional coordinate system and the three-dimensional model data corresponding to the structural member; Obtaining a safety factor of each parallel cross section according to the cross section centroid and the inertia tensor corresponding to each cross section to judge whether the strength of the structural member is qualified.

4. The hydraulic support structure member strength checking method according to claim 2, wherein The S14 further comprises: Obtaining a horizontal length size and a vertical height size corresponding to the reference surface according to the three-dimensional coordinate system and the three-dimensional model data corresponding to the structural member; Obtaining a cross section centroid corresponding to the reference surface according to the horizontal length size and the vertical height size corresponding to the reference surface; Obtaining an inertia tensor corresponding to the reference surface according to the horizontal length size and the vertical height size corresponding to the reference surface and the cross section centroid corresponding to the reference surface.

5. The hydraulic support structure member strength checking method according to claim 4, wherein The S14 obtains the safety factor of each parallel section according to the inertia tensor corresponding to each parallel section, to determine whether the strength of the structural member is qualified, comprising: According to the three-dimensional coordinate system and the three-dimensional model data corresponding to the structural member, the distance of each parallel section from the first end of the structural member, the distance from the second end of the structural member, and the distance from the reference plane are obtained; According to the distance of each parallel section from the first end of the structural member, the distance from the second end of the structural member, the distance from the reference plane, and the pre-set formula three, the cross-section bending moment corresponding to each parallel section is obtained; the formula three is: wherein M i is the cross-sectional bending moment corresponding to the parallel section of index i, L 1,i is the distance of the parallel section of index i from the first extremity of the structural element, L 2,i is the distance of the parallel section of index i from the second extremity of the structural element, L n,i is the distance of the parallel section of index i from the reference plane, F y is the preset bracket component force; According to the horizontal length size and the vertical height size corresponding to each parallel section, and the pre-set position screening strategy, the to-be-detected position corresponding to each parallel section is obtained; According to the to-be-detected position and the cross-section centroid corresponding to each parallel section, the distance between the to-be-detected position and the cross-section centroid is obtained; According to the distance between the to-be-detected position and the cross-section centroid, the cross-section bending moment, and the inertia tensor corresponding to each parallel section, and the pre-set formula four, the safety factor corresponding to each parallel section is obtained; the formula four is: wherein n i is the safety factor corresponding to the parallel section of index i, σ b is the pre-set allowable stress value, Z i is the longitudinal coordinate of the section centroid corresponding to each parallel section; According to the safety factor corresponding to each parallel section, and the pre-set safety factor threshold, whether the strength of the structural member is qualified is determined.

6. The hydraulic support structure member strength checking method according to claim 4, wherein The S14 further comprises: According to the three-dimensional coordinate system and the three-dimensional model data corresponding to the structural member, the distance of the reference plane from the first end of the structural member, and the distance from the second end of the structural member are obtained; According to the distance of the reference plane from the first end of the structural member, and the distance of the reference plane from the second end of the structural member, and the pre-set formula four, the cross-section bending moment corresponding to the reference plane is obtained; the formula four is: where L 1,0 is the distance from the datum plane to the first end of the structural member, L 2,0 is the distance from the datum plane to the second end of the structural member, F y is the pre-set support force component; According to the horizontal length size and the vertical height size corresponding to the reference plane, and the pre-set position screening strategy, the to-be-detected position corresponding to the reference plane is obtained; According to the to-be-detected position and the cross-section centroid corresponding to the reference plane, the distance between the to-be-detected position and the cross-section centroid is obtained; According to the distance between the to-be-detected position and the cross-section centroid, the cross-section bending moment, and the inertia tensor corresponding to the reference plane, the safety factor corresponding to the reference plane is obtained.

7. The hydraulic support structural member strength checking method according to claim 1, wherein The S14 further comprises: According to the safety factor of each parallel section, the safety factor curve corresponding to the structural member is generated, to assist in determining whether the strength of any position of the structural member is qualified.

8. The hydraulic support structure member strength checking method according to claim 1, wherein The S13 comprises: When receiving the structural member segmentation instruction input through the software interface, according to the pre-set cross-section distance, the parallel sections parallel to the reference plane are established on both sides of the reference plane, and the distance between each parallel section and the reference plane is the cross-section distance or an integer multiple of the cross-section distance.

9. A hydraulic support structure strength checking system comprising a memory, a processor and a computer program stored on the memory, characterized in that, The processor executes the computer program to implement the hydraulic support structural member strength checking method in any one of claims 1 to 8.

10. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the hydraulic support structural member strength checking method in any one of claims 1 to 8.

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