Anti-overturning analysis method for overhead crane and computer equipment

Abstract

The present application discloses an anti-overturning analysis method for an overhead crane on an arch and a computer device. Among them, the anti-overturning analysis method for the overhead crane on the arch solves the problem that the existing method cannot judge the overturning of the overhead crane on the arch with a continuously changing attitude. The anti-overturning analysis method includes: obtaining the geometric parameters of the arch rib, and determining a plurality of target positions where the load-bearing flat car moves on the arch rib based on the geometric parameters of the arch rib; for each target position, determining the bearing capacity of the arch rib when the load-bearing flat car is located at the target position based on the coordinates of the target position and the preset weight of the lifting component; based on the bearing capacities corresponding to each target position, determining the maximum bearing capacity of the arch rib during the movement of the load-bearing flat car on the arch rib, and determining the anti-overturning analysis result of the arch rib according to whether the maximum bearing capacity is less than the bearing capacity threshold of the arch rib. The present application can reliably analyze the overturning of the overhead crane on the arch, which is beneficial to ensuring the safe operation of the overhead crane on the arch and further ensuring the construction safety.

Description

Technical Field

[0001] The present invention generally relates to the technical field of bridge construction equipment, and particularly relates to an anti-overturning analysis method for an overhead crane on an arch and a computer device. Background Art

[0002] The running track of the overhead crane on the arch is a curve in the vertical plane, which is completely different from the traditional fixed-point crane and the plane-walking crane. During the entire walking process, not only the force between the wheel and the rail is constantly changing, but also the traction force driving the overhead crane on the arch rib is constantly changing. These mechanical indexes are related to the safety of the operation of the overhead crane on the arch. Among them, the anti-overturning performance of the curve movement of the overhead crane on the arch and the reliability of the traction rope are of great significance to the safe construction.

[0003] In the traditional infrastructure field, the assessment of structural safety is based on the deconstruction of special cases of specific static analysis models. The general process is to adopt empirical judgment of the most unfavorable position, conduct mechanical modeling and calculation, and make a judgment based on the calculation results of this position. For example, the calculation of the overhead crane for hoisting operations at the mid-span position of the bridge. Obviously, in the operating environment of the new overhead crane on the arch, under the state of constantly changing postures and multiple parameters, the most unfavorable position is often not judged by experience, and a calculation result that can reflect the whole process state is needed to determine the most unfavorable state (the maximum traction force and the corresponding position), so as to predict the anti-overturning performance of the overhead crane on the arch in advance. Summary of the Invention

[0004] In view of the above defects or deficiencies in the prior art, it is desirable to provide an anti-overturning analysis method for an overhead crane on an arch and a computer device, which is applicable to various arch ribs, can reliably analyze the overturning performance of the overhead crane on the arch, thus facilitating ensuring the safe operation of the overhead crane on the arch and further ensuring the construction safety.

[0005] In a first aspect, the present invention provides an anti-overturning analysis method for an overhead crane on an arch, which is applied to an overhead crane on an arch. The overhead crane on the arch includes an arch rib, a load-bearing flat car and a crane. A lifting rope is sleeved on the load-bearing flat car, and a lifting member is connected to the lifting rope. A traction rope is arranged between the crane and the load-bearing flat car to drive the load-bearing flat car to move on the arch rib. The anti-overturning analysis method for the overhead crane on the arch includes:

[0006] Obtain the geometric parameters of the arch rib, and determine a plurality of target positions where the load-bearing flat car moves on the arch rib based on the geometric parameters of the arch rib; wherein, the geometric parameters of the arch rib include the span, the rise and the arch axis coefficient;

[0007] For each target position, determine the bearing capacity of the arch rib where the load-bearing flat car is located based on the coordinates of the target position and the preset weight of the lifting member;

[0008] Based on the bearing capacity corresponding to each target position, determine the maximum bearing capacity of the arch rib during the movement of the load-carrying flatbed on the arch rib. According to whether the maximum bearing capacity is less than the bearing capacity threshold of the arch rib, determine the anti-overturning analysis result of the arch rib.

[0009] As an alternative solution, determine multiple target positions for the load-carrying flatbed to move on the arch rib based on the geometric parameters of the arch rib, including:

[0010] Construct a coordinate system based on the arch rib. The target position of the load-carrying flatbed is the first coordinate value and the second coordinate value in the coordinate system, and the first coordinate value and the second coordinate value are the two coordinate axes of the coordinate system respectively;

[0011] The first coordinate value and the second coordinate value satisfy a hyperbolic function relationship.

[0012] As an alternative solution, the hyperbolic function relationship is expressed by the following relational expression:

[0013]

[0014] Among them, represents the vertical position, represents the horizontal position, represents the rise of the arch rib, represents the arch axis coefficient, and the arch axis coefficient is the ratio of the dead load intensity at the arch foot to the dead load intensity at the arch crown, is the span of the arch rib.

[0015] As an alternative solution, based on the coordinates of the target position and the preset weight of the lifting member, determine the bearing capacity of the arch rib where the load-carrying flatbed is located at the target position, including:

[0016] Based on the coordinates of the target position, determine the angle between the tangent line of the arch rib corresponding to the target position and the horizontal direction;

[0017] According to the weight of the load-carrying flatbed and the weight of the lifting member, determine the resultant force of the arch rib in the direction of gravity;

[0018] Based on the angle, the resultant force of the arch rib in the direction of gravity, and the friction coefficient of the load-carrying flatbed on the arch rib, determine the bearing capacity of the arch rib where the load-carrying flatbed is located at the target position.

[0019] As an alternative solution, after determining the maximum bearing capacity of the arch rib during the movement of the load-carrying flatbed on the arch rib, the method further includes:

[0020] Determine the specification parameters of the lifting rope according to the maximum bearing capacity.

[0021] As an alternative solution, after determining multiple target positions for the load-carrying flatbed to move on the arch rib based on the geometric parameters of the arch rib, the method further includes:

[0022] For each target position, based on the weight of the load-carrying flatbed and the weight of the suspended component, determine the resultant force of the load-carrying flatbed in the direction of gravity;

[0023] Based on the resultant force of the load-carrying flatbed in the direction of gravity and the friction coefficient of the load-carrying flatbed on the arch rib, determine the traction force required for the load-carrying flatbed at each target position on the arch rib;

[0024] According to the traction force, control the output power of the crane so that the load-carrying flatbed moves on the arch rib.

[0025] As an alternative solution, after determining the traction force required for the load-carrying flatbed at each target position on the arch rib, the method further includes:

[0026] Based on the maximum traction force in the traction force, determine the specification parameters of the towing rope.

[0027] As an alternative solution, there are two arch ribs, and tracks are installed on each arch rib. A load-carrying flatbed is installed on the track, and a cantilever beam is arranged on the load-carrying flatbed. A flat cross beam is installed between the cantilever beams on the two load-carrying flatbeds. A suspension rope is sleeved on the load-carrying flatbed, and the lower part of the suspension rope is connected to the suspended component;

[0028] Cranes are arranged on both sides of the bottom of the arch rib. A towing rope is arranged between the crane and the load-carrying flatbed to drive the load-carrying flatbed to move on the track.

[0029] As an alternative solution, a sliding component is arranged on the track. The sliding component includes an inner sliding groove, and a plurality of sliding seats are nested in the inner sliding groove. A guiding wheel is arranged on the upper part of each sliding seat, and a connecting rope is arranged between the sliding seats;

[0030] Traction seats are arranged on both sides of the load-carrying flatbed. A positioning wheel is arranged inside the traction seat, a towing rope is sleeved on the positioning wheel, the towing rope contacts the guiding wheel, trusses are arranged on both sides of the traction seat, and a wheel-rail limiting sliding seat is arranged at the bottom of the truss. The wheel-rail limiting sliding seat and the track are mutually limited;

[0031] A clamp frame is arranged on the side of the truss. A first plate frame and a second plate frame are oppositely arranged along the height direction on the clamp frame. A first rolling ball is nested on the surface of the first plate frame facing the second plate frame. A second rolling ball is nested on the surface of the second plate frame facing the first plate frame. A third plate frame is arranged at the end of the second plate frame away from the first plate frame. A buffer telescopic frame is arranged on the third plate frame. A telescopic spring is arranged inside the buffer telescopic frame. A third rolling ball is arranged at the top of the buffer telescopic frame. The third rolling ball and the second rolling ball are at the same height, and the arch rib is clamped in the space defined by the first rolling ball, the second rolling ball and the third rolling ball.

[0032] In a second aspect, the present invention provides a computer device. The computer device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. The processor is used to implement the method in the first aspect when executing the program.

[0033] The anti-overturning analysis method for the overhead crane provided by the present invention obtains the geometric parameters of the arch rib, and determines multiple target positions for the load-bearing flatbed to move on the arch rib based on the geometric parameters of the arch rib; for each target position, determines the bearing capacity of the arch rib at the target position of the load-bearing flatbed based on the coordinates of the target position and the preset weight of the lifting member; determines the maximum bearing capacity of the arch rib during the movement of the load-bearing flatbed on the arch rib based on the bearing capacities corresponding to each target position, and determines the anti-overturning analysis result of the arch rib according to whether the maximum bearing capacity is less than the bearing capacity threshold of the arch rib. The present invention can reliably analyze the operation curve of the load-bearing flatbed on the arch rib, thereby obtaining the bearing capacity at each target position on the arch rib curve, and thus reliably obtaining the anti-overturning analysis result of the overhead crane, ensuring the operation safety of the overhead crane. At the same time, it can also obtain the position of the arch rib corresponding to the maximum bearing capacity of the arch rib, which is beneficial to focusing on the arch rib position where the maximum bearing capacity is located during the actual construction process, maintaining it in a timely manner, and further ensuring the operation safety of the overhead crane. Description of the Drawings

[0034] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, objects, and advantages of the present application will become more apparent:

[0035] Figure 1 It is a schematic framework diagram of the anti-overturning analysis system for the overhead crane according to the embodiment of the present application;

[0036] Figure 2 It is a flowchart of the operation of the anti-overturning analysis system for the overhead crane according to the embodiment of the present application;

[0037] Figure 3 It is a GUI input or import interface diagram of the arch rib parameters of the anti-overturning analysis system for the overhead crane according to the embodiment of the present application;

[0038] Figure 4 It is a GUI input or import interface diagram of the load-bearing flatbed parameters of the anti-overturning analysis system for the overhead crane according to the embodiment of the present application;

[0039] Figure 5 It is a result display interface diagram after data processing of the anti-overturning analysis system for the overhead crane according to the embodiment of the present application;

[0040] Figure 6 It is a schematic flowchart of the anti-overturning analysis method for the overhead crane according to the embodiment of the present application;

[0041] Figure 7 It is a schematic structural diagram of the overhead crane according to the embodiment of the present application;

[0042] Figure 8 It is a front view of the overhead crane according to the embodiment of the present application;

[0043] Figure 9 It is a schematic diagram of the partial structure of the connection part of the load-bearing flat car on the arch rib in the overhead crane of the embodiment of the present application;

[0044] Figure 10 It is a schematic diagram of the partial structure of the connection part of the load-bearing flat car on the arch rib in the overhead crane of the embodiment of the present application, located on the lower surface of the arch rib;

[0045] Figure 11 It is a schematic diagram of the traction structure of the load-bearing flat car in the overhead crane of the embodiment of the present application;

[0046] Figure 12 It is a schematic diagram of the structure of the sliding assembly in the overhead crane of the embodiment of the present application;

[0047] Figure 13 It is a schematic diagram of the structure of the clamp frame in the overhead crane of the embodiment of the present application;

[0048] Figure 14 It is a schematic diagram of the structure of the computer device for the anti-overturning analysis of the overhead crane provided by the embodiment of the present invention.

[0049] In the figure,

[0050] 1. Arch rib; 2. Track; 3. Load-bearing flat car; 4. Flat cross beam; 5. Hoisting winch; 6. Hoisting rope; 7. Lifting tool; 8. Generator set; 9. Lifted component; 10. Cantilever beam; 11. Crane; 21. Inner chute; 22. Slide seat; 23. Guide wheel; 24. Connecting rope; 31. Traction seat; 32. Positioning wheel; 33. Traction rope; 34. Truss; 35. Wheel-rail limit slide seat; 36. Clamp frame; 361. First plate frame; 362. First rolling ball; 363. Second plate frame; 364. Second rolling ball; 365. Third plate frame; 366. Buffer telescopic frame; 367. Telescopic spring; 368. Third rolling ball. Detailed implementation manners

[0051] The following further elaborates on the present application in combination with embodiments. It can be understood that the specific embodiments described herein are only used to explain the related invention, rather than limiting the invention. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The following will detail the present application with reference to the embodiments.

[0052] In the related art, computing software is divided into general software and professional software. Due to the originality of the overhead crane on the arch and the complexity of the curve movement, there is no matching professional simulation software. Although the general software has strong universality, it cannot fix the analysis process of the overhead crane on the arch. It often needs to build models and calculate according to each specific arch bridge, and most general software does not have an anti-overturning analysis algorithm for the operation process of the new type of overhead crane on the arch.

[0053] Based on the above problems, an embodiment of the present application provides an anti-overturning analysis method for an overhead crane on an arch, which is applied to an overhead crane on an arch. As Figure 7-13 shown, the overhead crane on the arch includes an arch rib 1, a load-bearing flat car 3 and a crane 11. A lifting rope 6 is sleeved on the load-bearing flat car 3, and a lifting member 9 is connected to the lifting rope 6. A towing rope 33 is arranged between the crane 11 and the load-bearing flat car 3 to drive the load-bearing flat car 3 to move on the arch rib 1. Among them, the anti-overturning analysis method for the overhead crane on the arch can be executed by an anti-overturning analysis system for the overhead crane on the arch based on MATLAB. As Figure 1 shown, the analysis system includes a data input unit 100, a data processing unit 200, a report generation unit 500, a visualization analysis unit 300, etc.

[0054] As Figures 2-5 shown, the operating principle of the anti-overturning analysis system for the overhead crane on the arch is as follows:

[0055] Data input unit 100: As Figures 3-4 shown, it mainly refers to inputting the geometric parameters of the arch rib (span, rise, arch axis coefficient), the operating parameters of the load-bearing flat car (left pre-tension, right pre-tension, wheel-rail friction coefficient, weight of the load-bearing flat car), and the preset weight of the lifting member; the data input is stored in the workspace in the form of a structure array or a corresponding cell array; as Figures 3-4, after the program runs, according to the relevant parameter descriptions, input data at the corresponding positions on the GUI interface (where the GUI interface includes an arch rib parameter input area, such as but not limited to the input areas for span, rise, arch axis coefficient, and arch rib stage division, as well as a schematic diagram of the arch rib axis; the GUI interface also includes a load-carrying flat car parameter input area, such as but not limited to the input areas for unit system, load-carrying flat car wheelbase, load-carrying flat car rise, left pre-tension, right pre-tension, weight of the hanging piece, weight of the load-carrying flat car, etc., as well as a diagram showing the parameter descriptions of the load-carrying flat car), or import the data stored in a formatted manner specified in advance in the form of an electronic spreadsheet or text. The statements in the MATLAB dynamic execution program are executed and comments and loop statements are automatically processed; for the GUI input data, call the corresponding range judgment module, and the range judgment module is stored in the function folder in the form of a common function. The function folder is automatically generated during program installation, judge the input data, and then give a compliance prompt according to the judgment result; for the imported data, the system stores the path information of the data file in an internal variable, then judges the file type according to the file extension, and then calls the corresponding spreadsheet or text file reading command to read the data in a specified format and distribute it to the corresponding parts of the GUI interface for display; for the imported data, call the corresponding range judgment module, judge the data, and then give a compliance prompt according to the judgment result; give a prompt on whether data correction is required according to the data compliance judgment result. If correction is required, re-perform the operation of inputting data at the corresponding positions on the GUI interface or import the data stored in a formatted manner specified in advance in the form of an electronic spreadsheet or text until all data is compliant.

[0056] Optionally, the GUI interface data input has a corresponding parameter unit selection function, including: length system and mass system, and both can be selected according to the drop-down menu. Each time the unit menu changes, the filled data will be automatically converted to ensure the consistency of data filling; the import operation can quickly load the data in the excel or txt file stored in a formatted manner into the program, and adjust the unit display in the GUI interface according to the unit system agreed in the file to maintain the consistency of data reading; the data compliance detection is the compliance detection of each data by a detector determined according to the actual engineering scope of the physical item corresponding to the data. The compliance detection will be performed when the input data is loaded, rather than waiting until the data is processed to judge the compliance of the data;

[0057] Visual analysis unit 300: According to the program configuration file, such as Figures 3-4 shown, display the arch rib axis in the graph display area of the visual analysis unit 300 panel according to the data input by the data input unit 100; as Figure 5As shown, extract the calculation result data and display the calculation results in the graphic display area of the result display module panel according to specific rules; re-extract the calculation result data and display the calculation results in the numerical display area of the result display module panel according to specific rules.

[0058] Optionally, the visualization analysis unit 300 plots the input data of the data input unit 100 in the form of a curve graph for display, and indicates the axis names, ranges, and titles, so as to visually display the input data for secondary compliance check of the input data.

[0059] Optionally, the visualization analysis unit 300 plots the processing results of the data processing unit 200 in the form of a curve graph, and indicates the axis names, ranges, titles, extreme values, and the position coordinates where the extreme values occur, and visually displays them. At the same time, the extreme value information is displayed in the form of the result panel data area. The graph and the numerical value are corresponding (as Figure 5 shown, the GUI interface displays the result maximum value, value, abscissa, span position; and the result minimum value, value, abscissa, span position; result output options: image, table, calculation book; and the result display area), and uses a drop-down menu to switch the display of different mechanical indexes.

[0060] The data processing unit 200: Taking the basic movement of the load-bearing flat car during the hoisting operation on the arch rib as the research object according to the input data of the data input unit 100, using the running track of the load-bearing flat car, i.e., the arch rib curve, the geometric parameters of the load-bearing flat car, and the lifting member working condition parameters, conduct a mechanical analysis of the arch rib during the movement of the load-bearing flat car on the arch rib, so as to simulate and calculate the hoisting process of the overhead crane, calculate the force condition of the arch rib and the force condition of the load-bearing flat car during the movement of the load-bearing flat car on the arch rib, and store them in the form of a structure array; extract the extreme values of each mechanical index and the position information where the extreme values occur during the movement of the load-bearing flat car on the arch rib according to the mechanical requirements; prepare the required data information in advance according to the generation elements of the actual required data results, conduct necessary judgments and combinations, and record the information and results.

[0061] Optionally, in the visual analysis unit 300, the input data of the data input unit 100 and the result data processed by the data processing unit 200 are extracted, and can be plotted in the form of a curve graph with the axis names and ranges indicated (specifically including but not limited to the mechanical analysis display during the movement of the load-carrying flatbed on the arch rib in the data processing unit, the display of the main mechanical indexes obtained through processing, and the numerical display of the extreme values of the mechanical indexes). The display of the graph and the numerical values is more direct, which can intuitively show the data change trend and distribution. At the same time, the extreme values and their positions are highlighted by different color markings. Meanwhile, the visualization unit supports functions such as zooming and moving the arch rib curve and marking individual points;

[0062] Optionally, the data processing unit 200 includes a position calculation module, an arch rib segmentation module, a basic parameter calculation module, a multi-variable non-linear equation set solving module, and a calculation result sorting module. The data processing unit 200 needs to call multiple modules to process the input data. The above modules are stored in the function folder in the form of common functions, and the function folder is automatically generated during program installation.

[0063] Optionally, the mechanical calculations of the data processing unit 200 are dynamically executed by MATLAB program statements and automatically process the annotation and loop statements. The calculations include: (1) calculating the position coordinates of the load-carrying flatbed at various positions during its movement on the arch rib; (2) calculating the angle between the tangent of the arc segment where the upper surface position of the arch rib is located and the horizontal direction; (3) calculating the force information of the arch rib and the force information of the load-carrying flatbed;

[0064] Among them, (1) calculating the position coordinates of the load-carrying flatbed at various positions during its movement on the arch rib: solving the coordinate information of each position by using the axis of the arch rib; (2) calculating the angle between the tangent of the arc segment where the upper surface position of the arch rib is located and the horizontal direction: solving the angle between the tangent of the arc segment at each position and the horizontal direction by using the geometric construction relationship; (3) calculating the force information of the arch rib and the force information of the load-carrying flatbed: solving the mechanical equation set according to the obtained angle and the force analysis of the arch rib at each position of the load-carrying flatbed on the arch rib to obtain the main mechanical solutions (the bearing capacity at each position of the arch rib and / or the traction force of the load-carrying flatbed at each position on the arch rib); arranging and storing the above main mechanical solutions in a specified manner;

[0065] Sort the calculated mechanical solutions according to the format required by the report in the report generation unit 500, compare the necessary data (such as the bearing capacity at each position of the arch rib and the bearing capacity threshold of the arch rib), call the judgment module to determine whether there is an overturning risk, extract and store the position information where the overturning exists, and determine the lifting rope and traction rope of the load-carrying flatbed according to the maximum bearing capacity of the arch rib.

[0066] Report generation unit 500: According to the processing results obtained by the data processing unit 200, construct a graph of the change of main mechanical indexes; construct a table of main extreme value information, construct a calculation report, and store it in the folder location guided by the GUI interface in the form of a Word document. The document content introduces the necessary calculation models and calculation processes, illustrates the main mechanical indexes, indicates whether there is an overturning risk, marks the dangerous range, and finally, taking the maximum traction force as an index, compares with the corresponding specifications and selects a traction wire rope model that meets the requirements.

[0067] Optionally, in the report generated by the report generation unit 500, the vector diagrams are all in the form of double vertical axis curve graphs, which are stored by calling the corresponding calculation result graph storage module. The excel table form of the data results is stored by calling the table storage module, and the word document is stored by the document storage module.

[0068] The above storage modules are stored in the function folder in the form of common functions. The function folder is automatically generated during program installation. The modules include sub-functions and other forms, and the API calls the corresponding application program to complete the saving of the result files.

[0069] Optionally, in the report generation unit 500, the drawing and saving of the vector diagrams use the processing data obtained by the data processing unit; the construction and saving of the extreme value information table use the processing data obtained by the data processing unit. Prepare the necessary data parameters, create a blank excel table, judge the table range, format and modify the table within the range, write the numerical values in the corresponding positions of the table according to the data parameters, and automatically save the table in the specified folder after filling.

[0070] In some embodiments, as Figure 6 shown, an anti-overturning analysis method for an overhead crane on an arch in an embodiment of the present application includes:

[0071] Step S10: Obtain the geometric parameters of the arch rib, and determine multiple target positions where the load-carrying flat car moves on the arch rib based on the geometric parameters of the arch rib; wherein, the geometric parameters of the arch rib include the span, the rise, and the arch axis coefficient.

[0072] Among them, the geometric parameters of the arch rib include but are not limited to the span, the rise, and the arch axis coefficient; the geometric parameters of the arch rib are fixed for each determined arch rib, and the geometric parameters of the arch rib can be obtained according to the actual situation.

[0073] In this step, multiple target positions where the load-carrying flat car moves on the arch rib are determined through the geometric parameters of the arch rib. Among them, the target position can be understood as the coordinate value of each point on the arch rib in the coordinate system. This is conducive to accurately analyzing the bearing capacity of each target position on the arch rib during the movement of the load-carrying flat car along the arch rib curve, and thus has very important significance for the safe and reliable operation of the overhead crane on the arch.

[0074] Step S20: For each target position, determine the bearing capacity of the arch rib at the target position by the flat car based on the coordinates of the target position and the preset weight of the lifting member;

[0075] Among them, the preset weight of the lifting member is determined according to the actual construction requirements;

[0076] The flat car moves along the arch rib. At each target position on the arch rib, a force analysis is performed on the arch rib. The arch rib is subject to the ground support force, the pressure of the flat car and the lifting member, and the friction force of the flat car. According to the principle of force balance, the bearing capacity of the arch rib at the target position by the flat car is determined.

[0077] Step S30: Based on the bearing capacities corresponding to the respective target positions, determine the maximum bearing capacity of the arch rib during the movement of the flat car on the arch rib. According to whether the maximum bearing capacity is less than the bearing capacity threshold of the arch rib, determine the anti-overturning analysis result of the arch rib.

[0078] It can be understood that the maximum bearing capacity of the arch rib is the maximum value among the bearing capacities corresponding to the respective target positions; the bearing capacity threshold of the arch rib is determined after the arch rib is constructed;

[0079] Specifically, when the maximum bearing capacity of the arch rib is less than the bearing capacity threshold of the arch rib, it is determined that the arch rib does not overturn; when the maximum bearing capacity of the arch rib is greater than or equal to the bearing capacity threshold of the arch rib, it is determined that the arch rib is in danger of overturning.

[0080] The anti-overturning analysis method of the overhead crane in this application solves the problem that the prior art cannot judge the overturning of the overhead crane with continuously changing postures. The anti-overturning analysis method of the overhead crane in the embodiments of this application obtains the geometric parameters of the arch rib, determines multiple target positions for the flat car to move on the arch rib based on the geometric parameters of the arch rib; for each target position, determine the bearing capacity of the arch rib when the flat car is at the target position based on the coordinates of the target position and the preset weight of the lifting member; based on the bearing capacities corresponding to the respective target positions, determine the maximum bearing capacity of the arch rib during the movement of the flat car on the arch rib. According to whether the maximum bearing capacity is less than the bearing capacity threshold of the arch rib, determine the anti-overturning analysis result of the arch rib. The embodiments of this application can reliably analyze the running curve of the flat car on the arch rib, thereby obtaining the bearing capacity on each side of each target position on the arch rib curve, and thus reliably obtaining the anti-overturning analysis result of the overhead crane, ensuring the running safety of the overhead crane. At the same time, the position of the arch rib corresponding to the maximum bearing capacity of the arch rib can also be obtained, which is beneficial to focusing on the arch rib position where the maximum bearing capacity is located during the actual construction process, maintaining it in a timely manner, and further ensuring the running safety of the overhead crane.

[0081] In some embodiments, step S10: Determine multiple target positions for the flat car to move on the arch rib based on the geometric parameters of the arch rib, including:

[0082] Based on the arch rib, a coordinate system is constructed. The target position of the load-bearing flat car is the first coordinate value and the second coordinate value in the coordinate system. The first coordinate value and the second coordinate value are the two coordinate axes of the coordinate system respectively.

[0083] The first coordinate value and the second coordinate value satisfy a hyperbolic function relationship.

[0084] Specifically, the hyperbolic function relationship is expressed by the following relational formula:

[0085]

[0086] Among them, represents the vertical position, represents the horizontal position, represents the rise of the arch, represents the arch axis coefficient, and the arch axis coefficient is the ratio of the dead load intensity at the arch springing to the dead load intensity at the crown of the arch. is the span of the arch.

[0087] Among them, the dead load intensity refers to the self-weight of the structure itself and the weight acting on the structure for a long time in structural engineering, such as the weights of components such as beams, slabs, and columns in building structures, as well as the weights of equipment and decorations fixed on the structure.

[0088] It can be understood that during the actual construction process, x The value of y and x can be obtained through actual measurement. According to the above

[0089] As an implementable method, step 20, determining the bearing capacity of the arch rib at the target position of the load-bearing flat car based on the coordinates of the target position and the preset weight of the lifting member, includes:

[0090] Step S21, determining the angle between the tangent of the arch rib corresponding to the target position and the horizontal direction based on the coordinates of the target position;

[0091] Among them, the tangent of the arch rib refers to the tangent of the arc segment on the surface of the arch rib;

[0092] Exemplarily, if the coordinates of the target position are ( x , y ), then the angle between the tangent of the arch rib and the horizontal direction is θ , ;

[0093] Step S22, determining the resultant force of the arch rib in the gravity direction according to the weight of the load-bearing flat car and the weight of the lifting member;

[0094] It can be understood that the resultant force of the arch rib in the gravity direction is the sum of the weight of the load-bearing flat car and the weight of the lifting member.

[0095] Step S23: Determine the bearing capacity of the arch rib when the load-carrying flatbed is at the target position based on the included angle, the resultant force of the arch rib in the gravity direction, and the friction coefficient of the load-carrying flatbed on the arch rib.

[0096] Specifically, when the load-carrying flatbed is at the target position, the calculation process of the bearing capacity of the arch rib is as follows:

[0097] The included angle between the tangent of the arch rib and the horizontal direction θ , ;

[0098] The resultant force in the gravity direction Fv , ;

[0099] Then the bearing capacity of the arch rib when the load-carrying flatbed is at the target position ( x , y ) is N , .

[0100] The above content can calculate the reaction force N of the arch rib at different position points ( x , y ), that is, the bearing capacity.

[0101] As an implementable way, after step S30: determining the maximum bearing capacity of the arch rib during the movement of the load-carrying flatbed on the arch rib, the method further includes:

[0102] Determine the specification parameters of the suspension rope according to the maximum bearing capacity.

[0103] It can be understood that while the arch rib is stressed, the load-carrying flatbed is also stressed. The load-carrying flatbed receives the pulling force of the suspended parts. Thus, according to the reaction force of the arch rib's maximum bearing capacity, the weight of the suspended parts, and the weight of the load-carrying flatbed, determine the pulling force received by the suspension rope, and determine the specification parameters of the suspension rope according to the pulling force of the suspension rope;

[0104] Among them, the specification parameters of the suspension rope can include but are not limited to the number of strands of steel bars, etc.

[0105] As an implementable way, after step S10: determining multiple target positions for the movement of the load-carrying flatbed on the arch rib based on the geometric parameters of the arch rib, the method further includes:

[0106] For each target position, determine the resultant force of the load-carrying flatbed in the gravity direction based on the weight of the load-carrying flatbed and the weight of the suspended parts;

[0107] Based on the resultant force of the load-carrying flatbed in the gravity direction and the friction coefficient of the load-carrying flatbed on the arch rib, determine the traction force required for each target position of the load-carrying flatbed on the arch rib;

[0108] Exemplarily, cranes are provided at the bottoms on both sides of the arch rib. The cranes drive the load-bearing flatbed to move. The load-bearing flatbed is subjected to the traction force of the crane through the towing rope. When the traction force F satisfies the following formula, it can drive the load-bearing flatbed to move on the arch rib:

[0109] F=

[0110] wherein, θ represents the included angle between the tangent of the arch rib surface and the horizontal direction; represents the horizontal position; represents the vertical position; represents the weight of the hanging piece; represents the weight of the flatbed; represents the vertical resultant force; represents the reaction force on the arch rib; TraA represents the left pre-tensioning force, TraB represents the right pre-tensioning force, ef represents the friction coefficient of the load-bearing flatbed on the arch rib;

[0111] Control the output power of the crane according to the traction force so that the load-bearing flatbed moves on the arch rib.

[0112] It can be understood that the traction force received by the load-bearing flatbed is different during the movement at different positions, so the output power provided by the crane is different. Thus, controlling the output power of the crane according to the traction force is beneficial to ensuring the reliable driving of the load-bearing flatbed on the arch rib while minimizing the power consumption of the crane and prolonging the service life of the crane.

[0113] In some embodiments, after determining the traction force required for each target position of the load-bearing flatbed on the arch rib, the anti-overturning analysis method of the overhead crane further includes:

[0114] Determine the specification parameters of the towing rope based on the maximum traction force in the traction force.

[0115] It can be understood that the maximum traction force is the maximum value among the traction forces corresponding to different positions of the load-bearing flatbed; the specification parameters of the towing rope are, for example but not limited to, the number of steel strands of the towing rope;

[0116] In this embodiment, determining the specification parameters of the towing rope according to the maximum traction force is beneficial to ensuring that the crane can reliably drive the load-bearing flatbed to move on the arch rib and avoid the towing rope from being broken.

[0117] In some examples, the bearing capacity, the maximum bearing capacity, and the traction force of the load-bearing flatbed at each target position on the arch rib can all be visually displayed through the visualization module of the above anti-overturning analysis system.

[0118] In summary, the anti-overturning analysis method of the overhead crane in the embodiments of the present application can reliably determine the anti-overturning property of the arch rib based on the motion curve of the load-bearing flat car, and can also determine the specification parameters of the suspension ropes and the specification parameters of the towing ropes, which is beneficial to ensuring the safety and reliability of the construction of the overhead crane; moreover, the anti-overturning analysis method of the present application is applicable to various different arch ribs and does not require modeling for each arch rib, and the operation is simple.

[0119] In some embodiments, as Figure 7-13 shown, there are two arch ribs 1, and a track 2 is installed on each arch rib 1. A load-bearing flat car 3 is installed on the track 2. A cantilever beam 10 is arranged on the load-bearing flat car 3. A flat cross beam 4 is installed between the cantilever beams 10 on the two load-bearing flat cars 3. A suspension rope 6 is sleeved on the load-bearing flat car 3, and the lower part of the suspension rope 6 is connected to a lifting member 9;

[0120] On both sides of the bottom of the arch rib 1, there are cranes 11. A towing rope 33 is arranged between the crane 11 and the load-bearing flat car 3 to drive the load-bearing flat car 3 to move on the track 2 system.

[0121] In some embodiments, a sliding assembly is arranged on the track 2. The sliding assembly includes an inner sliding groove 21. A plurality of sliding seats 22 are nested in the inner sliding groove 21. A guide wheel 23 is arranged on the upper part of each sliding seat 22. A connecting rope 24 is arranged between the sliding seats 22;

[0122] Towing seats 31 are arranged on both sides of the load-bearing flat car 3. A positioning wheel 32 is arranged inside the towing seat 31. A towing rope 33 is sleeved on the positioning wheel 32. The towing rope 33 contacts the guide wheel 23. Trusses 34 are arranged on both sides of the towing seat 31. A wheel-rail limiting sliding seat 35 is arranged at the bottom of the truss 34. The wheel-rail limiting sliding seat 35 and the track 2 limit each other;

[0123] A clamping hoop frame 36 is arranged on the side of the truss 34. A first plate frame 361 and a second plate frame 363 are oppositely arranged along the height direction on the clamping hoop frame 36. A first rolling ball 362 is nested on the surface of the first plate frame 361 facing the second plate frame 363. A second rolling ball 364 is nested on the surface of the second plate frame 363 facing the first plate frame 361. A third plate frame 365 is arranged at the end of the second plate frame 363 away from the first plate frame 361. A buffer telescopic frame 366 is arranged on the third plate frame 365. A telescopic spring 367 is arranged inside the buffer telescopic frame 366. A third rolling ball 368 is arranged at the top of the buffer telescopic frame 366. The third rolling ball 368 and the second rolling ball 364 are at the same height, and the arch rib 1 is clamped in the space defined by the first rolling ball 362, the second rolling ball 364 and the third rolling ball 368.

[0124] Next, the overhead crane applicable to the anti-overturning analysis method of the overhead crane in the embodiments of the present application will be described with specific embodiments.

[0125] AsFigure 7-13 As shown, there are two arch ribs 1, and each arch rib 1 is equipped with a track 2. A load-bearing flat car 3 is installed on the track 2. A cantilever beam 10 is arranged on the load-bearing flat car 3. A horizontal cross beam 4 is installed between the cantilever beams 10 on the two load-bearing flat cars 3. A hoisting winch 5 is installed on the horizontal cross beam 4. An engine set 8 is installed at the middle position of the horizontal cross beam 4. A lifting rope 6 is sleeved on the load-bearing flat car 3. The lower part of the lifting rope 6 is connected with a lifting tool 7. A suspended piece 9 is connected between the two lifting tools 7;

[0126] On both sides of the bottom of the arch rib 1, there are cranes 11. A towing rope 33 is arranged between the crane 11 and the load-bearing flat car 3 to drive the load-bearing flat car 3 to move on the track 2 system.

[0127] Among them, a sliding assembly is arranged on the track 2. The sliding assembly includes an inner sliding groove 21. A plurality of sliding seats 22 are nested in the inner sliding groove 21. A guiding wheel 23 is arranged on the upper part of each sliding seat 22. A connecting rope 24 is arranged between the sliding seats 22;

[0128] Towing seats 31 are arranged on both sides of the load-bearing flat car 3. A positioning wheel 32 is arranged inside the towing seat 31. A towing rope 33 is sleeved on the positioning wheel 32. The towing rope 33 contacts with the guiding wheel 23. Trusses 34 are arranged on both sides of the towing seat 31. A wheel-rail limiting sliding seat 35 is arranged at the bottom of the truss 34. The wheel-rail limiting sliding seat 35 and the track 2 are mutually limited;

[0129] A clamp frame 36 is arranged on the side of the truss 34. A first plate frame 361 and a second plate frame 363 are oppositely arranged along the height direction on the clamp frame 36. A first rolling ball 362 is nested on the surface of the first plate frame 361 facing the second plate frame 363. A second rolling ball 364 is nested on the second plate frame 363 facing the first plate frame 361. A third plate frame 365 is arranged at the end of the second plate frame 363 away from the first plate frame 361. A buffer telescopic frame 366 is arranged on the third plate frame 365. A telescopic spring 367 is arranged inside the buffer telescopic frame 366. A third rolling ball 368 is arranged at the top of the buffer telescopic frame 366. The third rolling ball 368 and the second rolling ball 364 are at the same height, and the arch rib 1 is clamped in the space defined by the first rolling ball 362, the second rolling ball 364 and the third rolling ball 368.

[0130] The working principle of the overhead crane is as follows: After data processing through the anti-overturning analysis system of the overhead crane, a report is generated. According to the instructions of the generated report, a suitable lifting rope 6 is selected. During the hoisting operation, the cranes 11 on both sides are started as needed. The crane 11 drives the towing rope 33 to take in and move. The towing rope 33 drives the load-bearing flat car 3 to move. The load-bearing flat car 3 drives the cantilever beam 10 to move. The cantilever beam 10 drives the horizontal cross beam 4 to move. And the cantilever beam 10 drives the suspended piece 9 at its bottom to move through the lifting tool 7 connected to the bottom of the lifting rope 6.

[0131] During the movement, the wheel-rail limit slide 35 limits the load-bearing flat car 3 in the extending direction of the arch rib, the first plate frame 361 and the second plate frame 363 limit the load-bearing flat car 3 in the vertical direction, and the buffer telescopic frame 366 and the telescopic spring 367 at the bottom of the arch rib 1 perform buffer support to improve the operation stability of the overhead crane on the arch.

[0132] The following refers to Figure 14 , which shows a schematic structural diagram of a computer device 400 suitable for use as a terminal device or server for implementing the embodiments of the present application.

[0133] As Figure 14 shown, the computer device 400 includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes according to the program stored in the read-only memory (ROM) 402 or the program loaded from the storage section 408 into the random access memory (RAM) 403. In the RAM 403, various programs and data required for the operation of the system 400 are also stored. The CPU 401, the ROM 402, and the RAM 403 are connected to each other via a bus 404. The input / output (I / O) interface 405 is also connected to the bus 404.

[0134] The following components are connected to the I / O interface 405: an input section 406 including a keyboard, a mouse, etc.; an output section 407 including such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc. and a speaker, etc.; a storage section 408 including a hard disk, etc.; and a communication section 409 including a network interface card such as a LAN card, a modem, etc. The communication section 409 performs communication processing via a network such as the Internet. A drive 410 is also connected to the I / O interface 405 as required. A removable medium 411, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 410 as required so that the computer program read from it can be installed into the storage section 408 as required.

[0135] Specifically, according to the embodiments of the present application, the process described above with reference to Figure 6 can be implemented as a computer software program. For example, the embodiments of the present application include a computer program product, which includes a computer program tangibly contained on a machine-readable medium, and the computer program includes program codes for executing Figure 3 the method. In such an embodiment, the computer program can be downloaded and installed from the network through the communication section 409, and / or installed from the removable medium 411.

[0136] It should be noted that the computer-readable medium shown in this application can be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of a computer-readable storage medium can include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this application, a computer-readable storage medium can be any tangible medium that contains or stores a program, which can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium can include a data signal propagated in a baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code contained on a computer-readable medium can be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0137] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architectures, functions, and operations of systems, methods, and computer program products according to various embodiments of the present invention. In this regard, each block in a flowchart or block diagram can represent a module, a program segment, or a part of code, and the foregoing module, program segment, or part of code contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks can occur in a different order than marked in the accompanying drawings. For example, two consecutive blocks shown can actually be executed substantially in parallel, and they can sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, and the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or operations, or can be implemented by a combination of dedicated hardware and computer instructions.

[0138] The units or modules involved in the embodiments of the present application can be implemented in software or in hardware. The described units or modules can also be provided in a processor. For example, it can be described as: a processor includes an acquisition unit, a first determination unit, and a second determination unit. Among them, the names of these units or modules do not, in some cases, limit the units or modules themselves. For example, the second determination unit can also be described as "the unit that determines the maximum bearing capacity of the arch rib during the movement of the load-carrying flat car on the arch rib based on the bearing capacity corresponding to each of the target positions, and determines the anti-overturning analysis result of the arch rib according to whether the maximum bearing capacity is less than the bearing capacity threshold of the arch rib".

[0139] As another aspect, the present application also provides a computer-readable storage medium. The computer-readable storage medium can be the computer-readable storage medium included in the aforementioned device in the above embodiments; it can also exist alone and be a computer-readable storage medium not assembled into the device. The computer-readable storage medium stores one or more programs, and the one or more programs are used by one or more processors to execute the anti-overturning analysis method of the overhead crane described in the present application.

[0140] The above description is only the preferred embodiments of the present application and the description of the technical principles applied. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the technical solutions formed by mutually replacing the above features with the (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. An anti-overturning analysis method for an arch crane is applied to an arch crane, wherein the arch crane comprises an arch rib, a load-bearing flat car and a crane, wherein a lifting rope is sleeved on the load-bearing flat car, and a lifting piece is connected to the lifting rope. A traction rope is arranged between the crane and the load-bearing flat car to drive the load-bearing flat car to move on the arch rib, and the method is characterized in that: The arch ribs include two, and each of the arch ribs is installed with a track, the load-bearing flat car is installed on the track, the load-bearing flat car is provided with a cantilever beam, a flat cross beam is installed between the cantilever beams on the two load-bearing flat cars, the load-bearing flat car is sleeved with the lifting rope, and the lower part of the lifting rope is connected to the hanging piece; The crane is arranged on both sides of the bottom of the arch rib, and the traction rope is arranged between the crane and the load-bearing flat car to drive the load-bearing flat car to move on the track; The track is provided with a sliding assembly, the sliding assembly includes an inner slide groove, a plurality of slide seats are nested in the inner slide groove, a guide wheel is provided on the upper part of each slide seat, and a connecting rope is provided between the slide seats; Traction seats are arranged on both sides of the load-bearing flat car, positioning wheels are arranged inside the traction seats, the traction rope is sleeved on the positioning wheels, the traction rope is in contact with the guide wheel, trusses are arranged on both sides of the traction seat, wheel-rail limiting slides are arranged at the bottom of the trusses, and the wheel-rail limiting slides and the rails are mutually limited; The truss side is provided with a clamp frame, a first plate frame and a second plate frame are arranged on the clamp frame relatively along the height direction, a first rolling ball is embedded in the surface of the first plate frame facing the second plate frame, a second rolling ball is embedded in the surface of the second plate frame facing the first plate frame, a third plate frame is arranged at the end of the second plate frame away from the first plate frame, a buffer telescopic frame is arranged on the third plate frame, a telescopic spring is arranged inside the buffer telescopic frame, a third rolling ball is arranged on the top of the buffer telescopic frame, the third rolling ball is at the same height as the second rolling ball, and the arch rib is clamped in the space defined by the first rolling ball, the second rolling ball and the third rolling ball; The anti-overturning analysis method comprises: The geometric parameters of the arch rib are obtained, and a coordinate system is constructed based on the arch rib. The target position of the load-bearing flat car is a first coordinate value and a second coordinate value in the coordinate system. The first coordinate value and the second coordinate value are two coordinate axes of the coordinate system, respectively. The first coordinate value and the second coordinate value satisfy the following relationship; in, Indicates the vertical position, Indicates the horizontal position, represents the rise of the arch rib, It represents the arch axis coefficient, which is the ratio of the arch foot dead load concentration to the arch top dead load concentration. is the span of the arch rib; For each of the target positions, the bearing capacity of the arch rib of the load-bearing flat car at the target position is determined based on the coordinates of the target position and the preset weight of the hanging member; and the traction force of the load-bearing flat car at each target position on the arch rib is determined, and the output power of the crane is controlled according to the traction force to move the load-bearing flat car on the arch rib; Based on the bearing capacities corresponding to the target positions, determining the maximum bearing capacities of the arch ribs during the movement of the load-bearing flat car on the arch ribs, and determining the anti-overturning analysis results of the arch ribs according to whether the maximum bearing capacities are less than the bearing capacities threshold of the arch ribs; After determining the maximum bearing capacity of the arch rib during the movement of the load-bearing flat car on the arch rib, the method further includes: The specification parameters of the suspension rope are determined according to the maximum bearing capacity.

2. The method for analyzing the anti-overturning property according to claim 1, characterized in that: Determining the bearing capacity of the arch rib of the load-bearing flat car at the target position based on the coordinates of the target position and the preset weight of the hanging member includes: Determine the angle between the tangent line of the arch rib corresponding to the target position and the horizontal direction based on the coordinates of the target position; Determine the resultant force of the arch rib in the direction of gravity according to the weight of the load-bearing flat car and the weight of the hanging member; Based on the included angle, the resultant force of the arch rib in the direction of gravity, and the friction coefficient of the load-bearing flat car on the arch rib, the bearing capacity of the arch rib of the load-bearing flat car at the target position is determined.

3. The method for analyzing the anti-overturning property according to claim 1, characterized in that: After determining a plurality of target positions for the load-bearing flat vehicle to move on the arch rib based on the geometric parameters of the arch rib, the method further includes: For each of the target positions, based on the weight of the load-bearing flat car and the weight of the hanging member, determining the resultant force of the load-bearing flat car in the direction of gravity; Determine the traction force required for each target position of the load-bearing flat car on the arch rib based on the resultant force of the load-bearing flat car in the gravity direction and the friction coefficient of the load-bearing flat car on the arch rib; The output power of the crane is controlled according to the traction force so that the load-bearing flat car moves on the arch rib.

4. The method for analyzing the anti-overturning property according to claim 3, characterized in that: After determining the traction force required by the load-bearing flat car at each target position on the arch rib, the method further includes: The specification parameters of the traction rope are determined based on the maximum traction force among the traction forces.

5. Computer device, characterized in that The computer device comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor is configured to implement the method according to any one of claims 1 to 4 when executing the program.

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