Method for analyzing anti-overturning performance of arch crane and computer equipment

Abstract

The invention discloses a method for analyzing the anti-overturning performance of an arch crane and computer equipment. The method for analyzing the overturning resistance of the arch crane solves the problem that the overturning resistance of an existing arch crane with the posture changing continuously cannot be judged, and the method for analyzing the overturning resistance comprises the steps that geometric parameters of an arch rib are obtained, and a plurality of target positions where a bearing flatcar moves on the arch rib are determined on the basis of the geometric parameters of the arch rib; for each target position, the bearing capacity of the arch rib when the bearing flatcar is located at the target position is determined based on the coordinates of the target position and the preset weight of the hanging piece; based on the bearing capacity corresponding to each target position, the maximum bearing capacity of the arch rib in the moving process of the bearing flatcar on the arch rib is determined, and according to whether the maximum bearing capacity is smaller than the bearing capacity threshold value of the arch rib, the anti-overturning analysis result of the arch rib is determined. According to the method, the overturning property of the arch crane can be reliably analyzed, so that the safe operation of the arch crane is ensured, and the construction safety is further ensured.

Description

Technical Field

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

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

[0003] The assessment of structural safety in the traditional infrastructure field is based on the deconstruction of special situations of specific static analysis models. The general process is to use experience to determine the most unfavorable position, perform mechanical modeling calculations, and make judgments based on the calculation results of the position, such as the calculation of the hoisting operation of a plane walking crane at the mid-span position of a bridge. Obviously, in the operating environment of the new arch crane, under the constantly changing posture and multi-parameter action state, the most unfavorable position is often not something that can be judged by experience. A calculation result that can reflect the entire process state is needed to determine the most unfavorable state (maximum traction and corresponding position), and then predict the anti-overturning ability of the arch crane in advance. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide an arch crane anti-overturning analysis method and computer equipment, which are applicable to various arch ribs and can reliably analyze the overturning of the arch crane, thereby facilitating the safe operation of the arch crane and further ensuring construction safety.

[0005] In a first aspect, the present invention provides an anti-overturning analysis method for an arch crane, which is applied to an arch crane. The arch crane comprises 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 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. The anti-overturning analysis method for the arch crane comprises: Acquire geometric parameters of the arch rib, and determine multiple target positions of the load-bearing flat car moving on the arch rib based on the geometric parameters of the arch rib; wherein the geometric parameters of the arch rib include span, rise and arch axis coefficient; For each target position, 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 piece; Based on the bearing capacity corresponding to each target position, the maximum bearing capacity of the arch rib during the movement of the load-bearing flat car on the arch rib is determined, and the anti-overturning analysis result of the arch rib is determined according to whether the maximum bearing capacity is less than the bearing capacity threshold of the arch rib.

[0006] As an optional solution, multiple target positions of the load-bearing flat car moving on the arch rib are determined based on the geometric parameters of the arch rib, including: A coordinate system is constructed based on the arch rib, and the target position of the load-bearing flat car 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 two coordinate axes of the coordinate system respectively; The first coordinate value and the second coordinate value satisfy a hyperbolic function relationship.

[0007] As an alternative, the hyperbolic function relationship is expressed by the following relationship:

[0008] 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.

[0009] As an optional solution, 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 piece 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 parts; Based on the included angle, the resultant force of the arch rib in the gravity direction 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.

[0010] As an optional solution, 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: Determine the specifications of the lifting rope according to the maximum load-bearing capacity.

[0011] As an optional solution, after determining a plurality of target positions of the load-bearing flat car moving on the arch rib based on the geometric parameters of the arch rib, the method further includes: For each target position, based on the weight of the load-bearing flat car and the weight of the hanging parts, determine the resultant force of the load-bearing flat car in the direction of gravity; The traction force required for each target position of the load-bearing flat car on the arch rib is determined 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.

[0012] As an optional solution, after determining the traction force required for each target position of the load-bearing flat car 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.

[0013] As an optional solution, the arch ribs include two, and each arch rib is installed with a track, a load-bearing flat car is installed on the track, a cantilever beam is arranged on the load-bearing flat car, a flat cross beam is installed between the cantilever beams on the two load-bearing flat cars, a lifting rope is sleeved on the load-bearing flat car, and the lower part of the lifting rope is connected to the hanging piece; Cranes are arranged on both sides of the bottom of the arch rib, and 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 track.

[0014] As an optional solution, a sliding assembly is provided on the track, 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, and positioning wheels are arranged inside the traction seats. Traction ropes are sleeved on the positioning wheels, and the traction ropes are in contact with the guide wheels. Trusses are arranged on both sides of the traction seats, and wheel-rail limiting slides are arranged at the bottom of the trusses. The wheel-rail limiting slides and the tracks are mutually limited. A clamp frame is provided on the side of the truss, and a first plate frame and a second plate frame are relatively arranged on the clamp frame along the height direction, a first rolling ball is embedded in the surface of the first plate frame facing the second plate frame, and a second rolling ball is embedded in the surface of the second plate frame facing the first plate frame. A third plate frame is provided at the end of the second plate frame away from the first plate frame, and a buffer telescopic frame is provided on the third plate frame, a telescopic spring is provided inside the buffer telescopic frame, and a third rolling ball is provided 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.

[0015] In a second aspect, the present invention provides a computer device, comprising 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 of the first aspect when executing the program.

[0016] The anti-overturning analysis method of the arch crane provided by the present invention obtains the geometric parameters of the arch rib, and determines multiple target positions of the load-bearing flat car moving on the arch rib based on the geometric parameters of the arch rib; for each target position, 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 piece; based on the bearing capacity corresponding to each target position, the maximum bearing capacity of the arch rib during the movement of the load-bearing flat car on the arch rib is determined, and the anti-overturning analysis result of the arch rib is determined 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 running curve of the load-bearing flat car on the arch rib, so as to obtain the bearing capacity at each target position on the arch rib curve, so as to reliably obtain the anti-overturning analysis result of the arch crane, ensure the operation safety of the arch crane, and at the same time, can also obtain the position of the arch rib corresponding to the maximum bearing capacity of the arch rib, which is conducive to focusing on the arch rib position where the maximum bearing capacity is located in the actual construction process, timely maintenance, and further ensuring the operation safety of the arch crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 A schematic diagram of the framework of an anti-overturning analysis system for an overhead crane according to an embodiment of the present application; Figure 2 is an operation flow chart of the anti-overturning analysis system of the arch crane in the embodiment of the present application; Figure 3 It is an interface diagram of the arch rib parameter GUI input or import interface of the arch crane anti-overturning analysis system of the embodiment of the present application; Figure 4 It is a diagram of the GUI input or import interface of the load-bearing flat car parameter of the arch crane anti-overturning analysis system of the embodiment of the present application; Figure 5 This is a result display interface diagram of the arch crane anti-overturning analysis system after data processing in the embodiment of the present application; Figure 6 A schematic flow chart of an anti-overturning analysis method for an arch crane according to an embodiment of the present application; Figure 7 It is a structural schematic diagram of an arch hoist according to an embodiment of the present application; Figure 8 It is a front view of the arch crane of an embodiment of the present application; Fig. 9 It is a partial structural schematic diagram of the connection portion of the load-bearing flat car on the arch rib in the arch crane of the embodiment of the present application; Fig.10 It is a partial structural schematic diagram of the connection portion of the load-bearing flat car on the arch rib in the arch hoist of the embodiment of the present application, which is located on the lower surface of the arch rib; Fig.11 It is a schematic diagram of the traction structure of the load-bearing flat car in the arch crane of the embodiment of the present application; Fig.12 It is a structural schematic diagram of a sliding assembly in an arch hoist according to an embodiment of the present application; Fig.13 is a schematic diagram of a clamp frame structure in an arch hoist according to an embodiment of the present application; Fig.14 A schematic diagram of the structure of a computer device for analyzing the anti-overturning performance of an overhead crane provided in an embodiment of the present invention.

[0018] In the figure, 1. Arch rib; 2. Track; 3. Load-bearing flat car; 4. Flat beam; 5. Hoisting winch; 6. Lifting rope; 7. Lifting equipment; 8. Engine unit; 9. Lifting parts; 10. Cantilever beam; 11. Crane; 21. Inner slideway; 22. Slide seat; 23. Guide wheel; 24. Connecting rope; 31. Traction seat; 32. Positioning wheel; 33. Traction rope; 34. Truss; 35. Wheel-rail limiting 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 DESCRIPTION

[0019] The present application will be further described in detail below in conjunction with the embodiments. It will be appreciated that the specific embodiments described herein are only used to explain the related inventions, rather than to limit the invention. It should be noted that, in the absence of conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the embodiments.

[0020] The calculation software in the relevant technology is divided into general software and professional software. Due to the originality of the arch crane and the complexity of the curved motion, there is no matching professional simulation software. Although the general software has strong universality, it cannot fix the analysis process of the arch crane. It is often necessary to perform modeling and calculation based on each specific arch bridge. Moreover, most general software does not have an anti-overturning analysis algorithm for the operation process of the new arch crane.

[0021] Based on the above problems, the embodiment of the present application provides an anti-overturning analysis method for an arch crane, which is applied to an arch crane, such as Figure 7-13As shown, the arch crane 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 traction rope 33 is provided 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. The anti-overturning analysis method of the arch crane can be performed by an anti-overturning analysis system of the arch crane based on MATLAB, as shown in FIG. Figure 1 As shown, the analysis system includes a data input unit 100, a data processing unit 200, a report generation unit 500 and a visual analysis unit 300, etc.

[0022] like Figure 2-5 As shown in the figure, the operating principle of the anti-overturning analysis system of the arch crane is as follows: Data input unit 100: Figure 3-4 As shown in the figure, it mainly refers to the input of geometric parameters of arch ribs (span, rise, arch axis coefficient), operating parameters of load-bearing flat cars (left pretension, right pretension, wheel-rail friction coefficient, weight of load-bearing flat cars) and preset weight of hanging parts; data input is stored in the workspace in the form of structure array or corresponding cell array; Figure 3-4 After the program is run, data is input at the corresponding position of the GUI interface according to the relevant parameter description interface (wherein the GUI interface includes an input area for arch rib parameters, such as but not limited to input areas for span, rise, arch axis coefficient and arch rib stage division, and a schematic diagram of the arch rib axis; the GUI interface also includes an input area for load-bearing flat car parameters, such as but not limited to input areas including unit system, load-bearing flat car wheelbase, load-bearing flat car rise, left pretension, right pretension, hanger weight, load-bearing flat car weight, and a load-bearing flat car parameter description diagram, etc.), or data formatted and stored in advance in a spreadsheet or text format is imported, and MATLAB dynamically executes the statements in the program and automatically processes comments and loop statements; for the GUI input data, the corresponding range judgment module is called, and the range judgment module uses a public function The function folder is automatically generated when the program is installed. The input data is judged, and compliance prompts are given according to the judgment results. For imported data, the system stores the path information of the data file in internal variables, and 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 the specified format, and distributes it to the corresponding parts of the GUI interface for display. For imported data, the corresponding range judgment module is called to judge the data, and then compliance prompts are given according to the judgment results. A prompt is given as to whether data correction is needed based on the data compliance judgment results. If correction is needed, the data input operation is performed in the corresponding position of the GUI interface again, or the data stored in the specified format in the spreadsheet or text format in advance is imported until all data are compliant.

[0023] Optionally, the GUI interface data input has a corresponding parameter unit selection function, including: length system and mass system, both of which can be selected according to the drop-down menu. Each time the unit menu changes, the filled-in data will be automatically converted to ensure the consistency of data filling; the import operation can quickly load the data of the excel or txt file stored in the data format into the program, and make corresponding adjustments to the unit display in the GUI interface according to the unit system agreed in the file to maintain the consistency of data reading; data compliance detection is a compliance detection of each data by the detector determined according to the actual engineering scope of the physical project corresponding to the data. Compliance detection will be performed when loading the input data, rather than waiting until the data is processed to determine the compliance of the data; Visual analysis unit 300: according to the program configuration file, such as Figure 3-4 As shown, the rib axis is displayed in the graphic display area of ​​the panel of the visualization analysis unit 300 according to the data input by the data input unit 100; Figure 5 As shown, the calculation result data is extracted, and the calculation result is displayed in the graphic display area of ​​the result display module panel according to specific rules; the calculation result data is re-extracted, and the calculation result is displayed in the numerical display area of ​​the result display module panel according to specific rules.

[0024] Optionally, the visual 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 coordinate axis name, range, and title, and displays the input data intuitively, so as to perform a secondary compliance check on the input data; Optionally, the visualization analysis unit 300 plots the processing result of the data processing unit 200 in the form of a curve graph, and indicates the coordinate axis name, range, title, extreme value, and the position coordinates where the extreme value is generated, and displays it intuitively, and at the same time displays the extreme value information in the form of a result panel data area display, and the graphics and values ​​are corresponding (such as Figure 5 As shown, the GUI interface displays the maximum value, value, horizontal coordinate, span position of the result; the minimum value, value, horizontal coordinate, span position of the result; the result output options: image, table, calculation book; and the result display area), and uses the drop-down menu to switch the display of different mechanical indicators.

[0025] Data processing unit 200: Based on the input data of data input unit 100, the basic movement of the load-bearing flat car during the lifting operation on the arch rib is taken as the object of investigation, and the running trajectory of the load-bearing flat car, i.e., the arch rib curve, the geometric parameters of the load-bearing flat car and the working parameters of the lifting parts are used to perform mechanical analysis on the arch rib during the movement of the load-bearing flat car on the arch rib, thereby simulating the lifting process of the crane on the arch, calculating the stress conditions of the arch rib and the stress conditions of the load-bearing flat car during the movement of the load-bearing flat car on the arch rib, and storing them in the form of a structure array; extracting the extreme values ​​of various mechanical indicators during the movement of the load-bearing flat car on the arch rib and the position information of the extreme values ​​according to mechanical requirements; preparing the required data information in advance according to the generation elements of the data results actually required, making necessary judgments and combinations, and recording the information and results.

[0026] Optionally, the visualization analysis unit 300 extracts the input data of the data input unit 100 and the result data processed by the data processing unit 200, which can be drawn in the form of a curve chart and the coordinate axis name and range are indicated (specifically including but not limited to the mechanical analysis display of the load-bearing flat car in the process of moving on the arch rib in the processing data unit, the display of the main mechanical indicators obtained by processing, and the numerical display of the extreme values ​​of the mechanical indicators). The display of graphics and numerical values ​​is more direct, and can intuitively display the data change trend and distribution. At the same time, the extreme values ​​and their locations are highlighted by markings of different colors. At the same time, the visualization unit supports the functions of scaling and moving the arch rib curve and marking a single point; Optionally, the data processing unit 200 includes a position calculation module, an arch rib segmentation module, a basic parameter calculation module, a multivariate nonlinear equation solution module and a calculation result collation module. The data processing unit 200 needs to call multiple modules to process the input data. The above modules are stored in the form of public functions in a function folder, which is automatically generated when the program is installed.

[0027] Optionally, the mechanical calculation of the data processing unit 200 is performed by MATLAB dynamically executing program statements and automatically processing comments and loop statements, and the calculation includes: (1) calculating the coordinates of each position of the load-bearing flat car moving on the arch rib; (2) calculating the angle between the tangent of the arc segment where the upper surface 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-bearing flat car; Among them, (1) the coordinates of each position of the load-bearing flat car moving on the arch rib are calculated: the coordinate information of each position is solved by using the axis of the arch rib; (2) the angle between the tangent of the arc segment where the upper surface of the arch rib is located and the horizontal direction is calculated: the angle between the tangent of the arc segment where each position is located and the horizontal direction is solved by using the geometric construction relationship; (3) the force information of the arch rib and the force information of the load-bearing flat car are calculated: according to the obtained angle and the force analysis of the arch rib at each position of the load-bearing flat car on the arch rib, the mechanical equation group is solved to obtain the main mechanical solutions (the bearing capacity at each position on the arch rib and / or the traction force of the load-bearing flat car at each position on the arch rib); the above main mechanical solutions are arranged and stored in a prescribed manner; The calculated mechanical solution is organized according to the format required by the report in the report generation unit 500, and the necessary data (such as the bearing capacity of each position on the arch rib and the bearing capacity threshold of the arch rib) are compared. The judgment module is called to determine whether there is a risk of overturning, and the position information of the overturning is extracted and stored, and the lifting rope and traction rope of the load-bearing flat car are determined according to the maximum bearing capacity of the arch rib.

[0028] Report generation unit 500: constructs a diagram of changes in main mechanical indicators according to the processing results obtained by the data processing unit 200; constructs a table of main extreme value information, constructs a calculation report, and stores it in a Word document format according to the folder location guided by the GUI interface. The document content introduces the necessary calculation model and calculation process, illustrates the main mechanical indicators, and points out whether there is a risk of overturning, marking the range of danger. Finally, the maximum traction force is used as an indicator, compared with the corresponding specifications, and a traction wire rope model that meets the requirements is equipped.

[0029] Optionally, in the report generated by the report generating unit 500, the vector graphics are in the form of double vertical axis curve graphs, which are stored by calling the corresponding calculation result graphic 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; The above storage module is stored in the function folder in the form of public functions. The function folder is automatically generated when the program is installed. The module contains sub-functions and the corresponding application is called by the API to complete the saving of the result file.

[0030] Optionally, the drawing and saving of the vector diagram in the report generation unit 500 adopts the processing data obtained by the data processing sheet; the construction and saving of the extreme value information table adopts the processing data obtained by the data processing sheet, prepares the necessary data parameters, creates an Excel blank table, determines the table range, formats and modifies the table within the range, writes the values ​​of the corresponding positions in the table according to the data parameters, and automatically saves the table in the specified folder after filling in.

[0031] In some embodiments, Figure 6As shown, a method for analyzing the anti-overturning performance of an overhead crane according to an embodiment of the present application includes: Step S10, obtaining geometric parameters of the arch rib, and determining multiple target positions of the load-bearing flat car moving on the arch rib based on the geometric parameters of the arch rib; wherein the geometric parameters of the arch rib include span, rise and arch axis coefficient; 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 specific geometric parameters of the arch rib can be obtained according to the actual situation; In this step, multiple target positions of the load-bearing flat car moving on the arch rib are determined through the geometric parameters of the arch rib, where 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-bearing flat car along the arch rib curve, which is of great significance for the safe and reliable operation of the arch crane.

[0032] Step S20: for each target position, determine 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 piece; Among them, the preset weight of the hanging parts is determined according to the actual construction requirements; The load-bearing flat car moves along the arch rib, and the force analysis of the arch rib is carried out at each target position on the arch rib. The arch rib is subjected to the support force of the ground, the pressure of the load-bearing flat car and the hanging parts, and the friction force of the load-bearing flat car. The bearing capacity of the arch rib at the target position of the load-bearing flat car is determined based on the principle of force balance.

[0033] Step S30: based on the bearing capacities corresponding to the target positions, determine the maximum bearing capacity of the arch rib during the movement of the load-bearing flat car on the arch rib, and determine 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.

[0034] It can be understood that the maximum bearing capacity of the arch rib is the maximum value of the bearing capacities corresponding to each target position; the bearing capacity threshold of the arch rib is determined after the arch rib is constructed; 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 will 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.

[0035] The anti-rollover analysis method for an arch crane in an embodiment of the present application solves the problem that the prior art cannot judge the rollover of an arch crane with a constantly changing posture. The anti-rollover analysis method for an arch crane in an embodiment of the present application obtains the geometric parameters of the arch rib, and determines multiple 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, determines the bearing capacity of the arch rib when the load-bearing flat car is at the target position based on the coordinates of the target position and the preset weight of the hanging parts; determines the maximum bearing capacity of the arch rib during the movement of the load-bearing flat car on the arch rib based on the bearing capacity corresponding to each target position, and determines the anti-rollover analysis result of the arch rib based on whether the maximum bearing capacity is less than the bearing capacity threshold of the arch rib. The embodiments of the present application can reliably analyze the running curve of the load-bearing flat car on the arch rib, so as to obtain the bearing capacity of each target position side on the arch rib curve, thereby reliably obtaining the anti-overturning analysis result of the arch crane, ensuring the safe operation of the arch crane, and at the same time, the position of the arch rib corresponding to the maximum bearing capacity of the arch rib can be obtained, which is beneficial to focus on the arch rib position where the maximum bearing capacity is located in the actual construction process, timely maintenance, and further ensuring the safe operation of the arch crane.

[0036] In some embodiments, step S10, determining multiple target positions of the load-bearing flat car moving on the arch rib based on the geometric parameters of the arch rib, includes: A coordinate system is constructed based on the arch rib, and the target position of the load-bearing flat car 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 two coordinate axes of the coordinate system respectively; The first coordinate value and the second coordinate value satisfy a hyperbolic function relationship.

[0037] Specifically, the hyperbolic function relationship is expressed by the following relationship:

[0038] in, Indicates the vertical position, Indicates the horizontal position, Indicates the height of the arch. 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.

[0039] The dead load concentration refers to the dead weight of the structure itself and the weight acting on the structure for a long time in structural engineering, such as the weight of beams, plates, columns and other components in the building structure, as well as the weight of equipment and decoration fixed on the structure; It is understandable that in the actual construction process, x The value of can be obtained through actual y and x The relationship between and is used to obtain the coordinates of different target positions on the arch rib; As an achievable manner, step 20, 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 piece, includes: Step S21, determining 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; The arch rib tangent line refers to the tangent line of the arc segment where the arch rib surface is located; For example, the coordinates of the target position are ( x , y ), then the angle between the tangent line of the arch rib and the horizontal direction is θ , ; Step S22, determining 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 parts; It can be understood that the resultant force of the arch rib in the direction of gravity is the sum of the weight of the load-bearing flat car and the weight of the hanging parts.

[0040] Step S23, determining the bearing capacity of the arch rib when the load-bearing flat car 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-bearing flat car on the arch rib.

[0041] Specifically, when the load-bearing flat car is at the target position, the calculation process of the arch rib's bearing capacity is as follows: Angle between the tangent line of the arch rib and the horizontal direction θ , ; Resultant force in the direction of gravity F , ; Then the load-bearing flat car is at the target position ( x , y ) The bearing capacity of the arch rib is N , .

[0042] The above content can be used to calculate different position points ( x , y ) point on the arch rib, that is, the bearing capacity.

[0043] As an achievable manner, in step S30, 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: Determine the specifications of the lifting rope according to the maximum load-bearing capacity.

[0044] It can be understood that when the arch rib is stressed, the load-bearing flat car is also stressed, and the load-bearing flat car receives the tension of the hanging parts. In this way, the tension on the lifting rope is determined according to the reaction force of the maximum bearing capacity of the arch rib on the load-bearing flat car, the weight of the hanging parts, and the weight of the load-bearing flat car, and the specification parameters of the lifting rope are determined according to the tension of the lifting rope; The specifications of the suspension rope may include but are not limited to the number of steel bars. As an achievable manner, in step S10, 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 comprises: For each target position, based on the weight of the load-bearing flat car and the weight of the hanging parts, determine the resultant force of the load-bearing flat car in the direction of gravity; The traction force required for each target position of the load-bearing flat car on the arch rib is determined 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; For example, a crane is provided at the bottom of both sides of the arch rib. The crane drives the load-bearing flat car to move. The load-bearing flat car is subjected to the traction force of the crane through the traction rope. The traction force F satisfies the following formula to drive the load-bearing flat car to move on the arch rib: F=

[0045] in, θ It represents the angle between the tangent line of the arch rib surface and the horizontal direction; Indicates horizontal position; Indicates vertical position; Indicates the weight of the hanging piece; Indicates flat car weight; represents the vertical resultant force; represents the reaction force on the arch rib; TraA represents the left pretension, TraB represents the right pretension, ef It represents 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.

[0046] It is understandable that the traction force applied to the load-bearing flat car when moving in different positions is different, so the output power provided by the crane is different. Therefore, controlling the output power of the crane according to the traction force is conducive to ensuring that the load-bearing flat car can be reliably driven to move on the arch ribs while reducing the power consumption of the crane as much as possible and extending the service life of the crane.

[0047] In some embodiments, after determining the traction force required for the load-bearing flat car at each target position on the arch rib, the method for analyzing the anti-overturning performance of the arch crane further includes: The specification parameters of the traction rope are determined based on the maximum traction force among the traction forces.

[0048] It can be understood that the maximum traction force is the maximum value of the traction forces corresponding to different positions of the load-bearing flat car; the specification parameters of the traction rope are, for example but not limited to, the number of steel strands of the traction rope; In this embodiment, the specification parameters of the traction rope are determined according to the maximum traction force, which is conducive to ensuring that the crane can reliably drive the load-bearing flat car to move on the arch rib and avoid the traction rope from being broken.

[0049] In some examples, the bearing capacity of each target position on the arch rib, the maximum bearing capacity, and the traction force of the load-bearing flat car can be visualized through the visualization module of the anti-overturning analysis system.

[0050] To sum up, the anti-overturning analysis method of the arch crane in the embodiment of the present application can reliably determine the anti-overturning of the arch rib based on the motion curve of the load-bearing flat car, and can also determine the specification parameters of the lifting rope and the specification parameters of the traction rope, which is beneficial to ensure the safety and reliability of the arch crane construction; and the anti-overturning analysis method of the present application is applicable to various different arch ribs, without the need to model each arch rib, and is simple to operate.

[0051] In some embodiments, Figure 7-13 As shown, the arch rib 1 includes two, 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 lifting rope 6 is sleeved on the load-bearing flat car 3, and the lower part of the lifting rope 6 is connected to the hanging piece 9; Cranes 11 are arranged on both sides of the bottom of the arch rib 1 , and a traction 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.

[0052] In some embodiments, a sliding assembly is provided on the track 2, and the sliding assembly includes an inner slide groove 21, a plurality of slide seats 22 are nested in the inner slide groove 21, a guide wheel 23 is provided on the upper part of each slide seat 22, and a connecting rope 24 is provided between the slide seats 22; A traction seat 31 is provided on both sides of the load-bearing flat car 3, a positioning wheel 32 is provided inside the traction seat 31, a traction rope 33 is sleeved on the positioning wheel 32, the traction rope 33 is in contact with the guide wheel 23, a truss 34 is provided on both sides of the traction seat 31, a wheel-rail limiting slide 35 is provided at the bottom of the truss 34, and the wheel-rail limiting slide 35 and the track 2 are mutually limited; A clamp frame 36 is provided on the side of the truss 34, and a first plate frame 361 and a second plate frame 363 are relatively arranged on the clamp frame 36 along the height direction. The first plate frame 361 is embedded with a first rolling ball 362 on the surface of the second plate frame 363 facing the first plate frame 361, and the second rolling ball 364 is embedded with the surface of the second plate frame 363 facing the first plate frame 361. A third plate frame 365 is provided on the end of the second plate frame 363 away from the first plate frame 361, and a buffer telescopic frame 366 is provided on the third plate frame 365. A telescopic spring 367 is provided inside the buffer telescopic frame 366. A third rolling ball 368 is provided on 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.

[0053] The following is a description of the arch crane to which the anti-overturning analysis method of the arch crane in the embodiment of the present application is applicable using a specific embodiment.

[0054] like Figure 7-13 As shown, the arch rib 1 includes two, and each arch rib 1 is installed 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 flat 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 flat beam 4, an engine group 8 is installed in the middle of the flat beam 4, a lifting rope 6 is sleeved on the load-bearing flat car 3, a sling 7 is connected to the lower part of the lifting rope 6, and a sling 9 is connected between the two slings 7; Cranes 11 are arranged on both sides of the bottom of the arch rib 1 , and a traction 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.

[0055] The track 2 is provided with a sliding assembly, which includes an inner slide groove 21, in which a plurality of slide seats 22 are nested, a guide wheel 23 is provided on the upper part of each slide seat 22, and a connecting rope 24 is provided between the slide seats 22; A traction seat 31 is provided on both sides of the load-bearing flat car 3, a positioning wheel 32 is provided inside the traction seat 31, a traction rope 33 is sleeved on the positioning wheel 32, the traction rope 33 is in contact with the guide wheel 23, a truss 34 is provided on both sides of the traction seat 31, a wheel-rail limiting slide 35 is provided at the bottom of the truss 34, and the wheel-rail limiting slide 35 and the track 2 are mutually limited; A clamp frame 36 is provided on the side of the truss 34, and a first plate frame 361 and a second plate frame 363 are relatively arranged on the clamp frame 36 along the height direction. The first plate frame 361 is embedded with a first rolling ball 362 on the surface of the second plate frame 363 facing the first plate frame 361, and the second rolling ball 364 is embedded in the second plate frame 363 facing the first plate frame 361. A third plate frame 365 is provided at the end of the second plate frame 363 away from the first plate frame 361, and a buffer telescopic frame 366 is provided on the third plate frame 365. A telescopic spring 367 is provided inside the buffer telescopic frame 366. A third rolling ball 368 is provided on 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.

[0056] The working principle of the arch crane is as follows: a report is generated after data processing through the arch crane anti-overturning analysis system, and a suitable lifting rope 6 is selected according to the instructions of the generated report. During the lifting operation, the cranes 11 on both sides are started as needed, and the cranes 11 drive the traction rope 33 to be stored and moved, the traction 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 flat beam 4 to move, and the cantilever beam 10 drives the hanging piece 9 at the bottom thereof to move through the sling 7 connected to the bottom of the lifting rope 6.

[0057] During the movement, the wheel-rail limiting slide 35 limits the load-bearing flat car 3 along the extension 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 telescopic spring 367 at the bottom of the arch rib 1 provide buffering support to improve the stability of the arch crane operation.

[0058] Reference below Fig.14 , which shows a schematic diagram of the structure of a computer device 400 suitable for implementing a terminal device or a server in an embodiment of the present application.

[0059] like Fig.14 As shown, the computer device 400 includes a central processing unit (CPU) 401, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 402 or a program loaded from a storage part 408 into a 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 through a bus 404. An input / output (I / O) interface 405 is also connected to the bus 404.

[0060] 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 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 needed. 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 needed, so that a computer program read therefrom is installed into the storage section 408 as needed.

[0061] In particular, according to the embodiments of the present application, the above reference Figure 6 The described processes may be implemented as computer software programs. For example, embodiments of the present application include a computer program product comprising a computer program tangibly embodied on a machine-readable medium, the computer program comprising a computer program for executing Figure 3 In such an embodiment, the computer program may be downloaded and installed from a network via the communication section 409 and / or installed from the removable medium 411.

[0062] It should be noted that the computer-readable medium shown in the present application may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples of computer-readable storage media may 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 the present application, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, device or device. In the present application, a computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries a computer-readable program code. This propagated data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, which may 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 the computer-readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, optical cable, RF, etc., or any suitable combination of the above.

[0063] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present invention. In this regard, each box in the flow chart or block diagram can represent a module, a program segment, or a part of the code, and the aforementioned module, program segment, or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0064] The units or modules involved in the embodiments described in the present application may be implemented by software or by hardware. The described units or modules may also be set in a processor, for example, may 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 constitute a limitation on the units or modules themselves under certain circumstances. For example, the second determination unit may also be described as "a unit that determines the maximum bearing capacity of the arch rib during the movement of the load-bearing 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."

[0065] As another aspect, the present application further provides a computer-readable storage medium, which may be the computer-readable storage medium included in the aforementioned device in the above embodiment; or may be a computer-readable storage medium that exists independently and is not assembled into the device. The computer-readable storage medium stores one or more programs, and the programs are used by one or more processors to execute the method for analyzing the anti-overturning performance of the arch crane described in the present application.

[0066] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but 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 above features are replaced with (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 method comprises: Acquiring geometric parameters of the arch rib, and determining multiple target positions of the load-bearing flat car moving on the arch rib based on the geometric parameters of the arch rib; wherein the geometric parameters of the arch rib include span, rise and arch axis coefficient; For each of the target positions, 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; Based on the bearing capacity corresponding to each target position, the maximum bearing capacity of the arch rib during the movement of the load-bearing flat car on the arch rib is determined, and the anti-overturning analysis result of the arch rib is determined according to whether the maximum bearing capacity is less than the bearing capacity threshold of the arch rib.

2. The method for analyzing the anti-overturning property according to claim 1, characterized in that: Determining a plurality of target positions of the load-bearing flat vehicle moving on the arch rib based on the geometric parameters of the arch rib includes: A coordinate system is constructed based on the arch rib, and the target position of the load-bearing flat car is a first coordinate value and a second coordinate value in the coordinate system, and 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 a hyperbolic function relationship.

3. The method for analyzing the anti-overturning property according to claim 2, characterized in that: The hyperbolic function relationship is expressed by 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.

4. The method for analyzing the anti-overturning property according to claim 2, 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.

5. The method for analyzing the anti-overturning property according to claim 1, characterized in that: 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.

6. 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.

7. The method for analyzing the anti-overturning property according to claim 6, 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.

8. The method for analyzing the anti-overturning property according to claim 1, 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 cranes are arranged on both sides of the bottom of the arch rib, and the traction ropes are arranged between the cranes and the load-bearing flat car to drive the load-bearing flat car to move on the track.

9. The method for analyzing the anti-overturning property according to claim 8, characterized in that: 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; A clamp frame is provided on the side of the truss, and a first plate frame and a second plate frame are relatively arranged on the clamp frame along the height direction, a first rolling ball is embedded in the surface of the first plate frame facing the second plate frame, and a second rolling ball is embedded in the surface of the second plate frame facing the first plate frame. A third plate frame is provided at the end of the second plate frame away from the first plate frame, a buffer telescopic frame is provided on the third plate frame, a telescopic spring is provided inside the buffer telescopic frame, and a third rolling ball is provided 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.

10. A 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 7 when executing the program.

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