CN115562072B - Dynamic analysis system of belt conveyor - Google Patents
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Abstract
The invention discloses a dynamic analysis system of a belt conveyor, which comprises a static calculation unit, a dynamic analysis unit and a visual display unit; the static calculation unit generates a static calculation result of the belt conveyor and generates calculation parameters required by dynamic analysis and calculation; the dynamic analysis unit is used for decomposing the whole belt conveyor into a plurality of component units, establishing a corresponding kinetic equation for each component unit to form a kinetic equation set corresponding to the belt conveyor, and performing calculation analysis on the kinetic equation set by adopting a numerical method; and the visual display unit performs data interaction with the dynamic analysis unit so as to display the calculation result dynamically analyzed by the dynamic analysis unit. The system can realize simulation under various unsteady working conditions of the belt conveyor, dynamically analyze stress conditions of the belt conveyor in dynamic processes such as starting and braking, ensure comprehensiveness of the design process of the belt conveyor, and effectively overcome the defects of a transmission static calculation scheme.
Description
Technical Field
The invention relates to a software technology, in particular to a dynamic analysis technology of a belt conveyor.
Background
At present, the belt conveyor is designed in a manner of directly adopting static calculation, so that in order to ensure the strength of each part, a large safety coefficient is often required to be used in the design process, and the cost is likely to be increased. In addition, the static calculation of the transmission can not anticipate the stress condition of the belt conveyor in the dynamic processes of starting, braking and the like, and the stress condition is often the most considered condition.
Aiming at the problems of the scheme based on static calculation, the prior art also provides a dynamic analysis scheme aiming at the belt conveyor, but the existing dynamic analysis scheme is two sets of independent schemes which are mutually fractured relative to the static calculation scheme, the basic data required by the dynamic analysis scheme are all required to be filled by manpower, and the efficiency is very low.
Therefore, there is a need in the art for a belt conveyor dynamic analysis scheme that can accommodate long distance, large volumes.
Disclosure of Invention
In view of the problems of the prior art, it is an object of the present invention to provide a belt conveyor dynamic analysis system, thereby overcoming the problems of the prior art.
In order to achieve the above purpose, the belt conveyor dynamic analysis system provided by the invention mainly comprises a static calculation unit, a dynamic analysis unit and a visual display unit;
The static calculation unit generates a static calculation result of the belt conveyor based on a belt conveyor design calculation model and generates calculation parameters required by dynamic analysis calculation;
The dynamic analysis unit is based on the calculation result of the static calculation unit, simultaneously, the whole belt conveyor is decomposed into a plurality of component units, a corresponding kinetic equation is established for each component unit to form a kinetic equation set of the corresponding belt conveyor, and then the kinetic equation set is subjected to calculation analysis by adopting a numerical method;
and the visual display unit performs data interaction with the dynamic analysis unit so as to display the calculation result dynamically analyzed by the dynamic analysis unit.
In some examples of the invention, the static computing unit includes an empirical parameter database, a static computing module, and a computing database;
the experience parameter database is used for storing various experience parameters of the whole machine system designed by matching with the belt conveyor;
the static calculation module performs data interaction with the experience parameter database, and can acquire required complete machine system parameters from the experience parameter database according to calculation requirements, and perform static calculation including complete machine electric power static calculation, braking moment static calculation, non-return moment static calculation, conveyer belt each point tension static calculation, carrier roller stress static calculation and the like; and the static calculation module stores corresponding parameter data into a calculation database according to a calculation determination result, and is used for providing initial calculation data for the dynamic analysis unit.
In some examples of the present invention, the calculation database includes a conveyor belt database, a roller sub-database and a carrier roller sub-database, wherein the conveyor belt database is used for storing the conveyor belt model determined by calculation of the static calculation module and the rigidity and damping parameters of the conveyor belt corresponding to the conveyor belt model; the roller sub database is used for storing the roller model calculated and determined by the static calculation module, and the rotation resistance coefficient and the rotation inertia parameter of the roller corresponding to the roller model; the carrier roller sub-database is used for storing the carrier roller model calculated and determined by the static calculation module, and the carrier roller rotational resistance coefficient and the rotational inertia parameter corresponding to the carrier roller model.
In some examples of the invention, the static calculation module performs corresponding static calculations based on the constructed belt conveyor design calculation formula.
In some examples of the present invention, the dynamic analysis unit mainly includes a parameter extraction module, a complete machine unit division module, and a dynamic analysis module;
The parameter extraction module synchronously invokes the rigidity and damping parameters of the conveying belt, the rotary resistance coefficient and the rotary inertia parameters of the roller and the rotary resistance coefficient and the rotary inertia parameters of the carrier roller determined by the static calculation after the static calculation unit completes the related static calculation, transmits the parameters to the whole unit dividing module to construct a corresponding dynamic equation, and transmits the parameters to the dynamic analysis module to carry out dynamic analysis calculation;
the whole machine unit dividing module divides the whole machine of the belt conveyor to be designed into a plurality of constituent units, establishes a corresponding kinetic equation for each constituent unit, and accordingly forms a kinetic equation set corresponding to the whole machine of the belt conveyor;
The dynamic analysis module performs data interaction with the parameter extraction module and the whole machine unit dividing module to obtain a kinetic equation set corresponding to the whole machine of the belt conveyor, and the rigidity and damping parameters, the rotary resistance coefficient and the rotary inertia parameter of the roller and the rotary resistance coefficient and the rotary inertia parameter of the carrier roller, which are extracted by the parameter extraction module; and calculating the formed kinetic equation set based on the acquired related parameters such as the conveyor belt, the roller, the carrier roller and the like, so as to realize dynamic analysis.
The dynamic analysis system of the belt conveyor provided by the invention organically integrates static calculation and dynamic analysis, and can directly call related parameters from the database of the conveyor belt, the roller and the carrier roller after the static calculation, directly carry out subsequent dynamic analysis calculation, greatly improve the efficiency and ensure the reliability of dynamic analysis calculation results.
When the dynamic analysis system of the belt conveyor provided by the invention is applied, simulation under various unsteady working conditions such as starting, control stop and emergency stop, braking and backstop of the belt conveyor can be realized, the stress condition of the belt conveyor in the dynamic processes such as starting and braking is dynamically analyzed, the comprehensiveness of the design process of the belt conveyor is ensured, the defects of a transmission static calculation scheme are effectively overcome, and the dynamic analysis system of the belt conveyor can be effectively suitable for the design of long-distance and large-capacity belt conveyors.
Meanwhile, when the system is applied, the data such as displacement, speed, acceleration, tension curve and the like of each point of the conveyor can be output, so that a user can intuitively know the dynamic process of the belt conveyor, and the system can assist a designer in knowing the design of the components which need to be focused in the whole machine design process.
Moreover, the system can provide a friendly man-machine operation interface, and is convenient for engineering designers to use.
Drawings
The invention is further described below with reference to the drawings and the detailed description.
FIG. 1 is a flow chart of the operation of a belt conveyor dynamic analysis system in an example of the invention.
Detailed Description
The invention is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
Aiming at the problems existing in the prior art, the invention provides a dynamic analysis system of a belt conveyor, which can organically integrate static calculation and dynamic analysis, and can output displacement, speed, acceleration and tension curves of each point of the conveyor and greatly improve the efficiency of engineering designers aiming at calculation simulation under various unsteady working conditions such as starting, control stop, emergency stop, braking and backstop of the belt conveyor.
The dynamic analysis system of the belt conveyor mainly comprises a static calculation unit, a dynamic analysis unit and a visual display unit.
The static calculation unit in the system specifically generates a static calculation result of the belt conveyor based on a belt conveyor design calculation model, and generates calculation parameters required by dynamic analysis calculation.
The dynamic analysis unit in the system is used for analyzing the stress condition of the belt conveyor in the dynamic processes of starting, braking and the like, and making up the defects and loopholes of static design calculation; the dynamic analysis unit is particularly directly subjected to data interaction with the static calculation unit, is directly based on the calculation result of the static calculation unit, simultaneously decomposes the whole belt conveyor into a plurality of component units, establishes a corresponding kinetic equation for each component unit to form a kinetic equation set corresponding to the belt conveyor, and then carries out calculation analysis on the kinetic equation set by adopting a numerical method.
Meanwhile, the visual display unit performs data interaction with the dynamic analysis unit so as to display the calculation result dynamically analyzed by the dynamic analysis unit.
In some embodiments of the present invention, the respective belt conveyor design calculation models constructed in the static calculation units therein are formed by respective belt conveyor design calculation formulas.
The specific form of the belt conveyor design calculation formula is not limited herein, and may be determined according to actual requirements. Preferably, the belt conveyor design calculation model herein may be implemented based on VB language.
In some embodiments of the present invention, the dynamic analysis unit in the system performs data interaction with the static calculation unit, and when the formed kinetic equation set is calculated to perform dynamic analysis, the matrix equation can be solved and calculated by calling the MATLAB matrix calculation module, so as to obtain a calculation result of dynamic analysis, thereby improving the efficiency of dynamic analysis and calculation and ensuring the accuracy of the result.
In some embodiments of the present invention, the visual display unit in the system may directly perform data interaction with the dynamic analysis unit, and directly perform visual display on the analysis result calculated by the dynamic analysis unit; or the visual display unit in the system can directly perform data interaction with the dynamic analysis unit, obtain the analysis result calculated by the dynamic analysis unit, store the analysis result in the database unit in the system, and retrieve the analysis result from the database unit for dynamic display after the analysis result is stored in the data storage, so that the data can be prevented from being changed or modified due to various emergency situations in the transmission process, and the consistency of the storage and the display of the analysis result can be ensured.
The flow of the dynamic analysis of the belt conveyor by the system will be described herein with reference to the functions and configuration of the individual units in the system.
The belt conveyor dynamic analysis system provided by the invention can be presented by a corresponding software system when being implemented.
For example, when the dynamic analysis system of the belt conveyor is realized, visual Basic can be adopted to realize interface setting, MATLAB is used for processing the dynamic analysis process, and an OLE DB mode is adopted to enable VB and MATLAB to be seamlessly fused.
When the VB main program calls MATLAB, source codes and m files required by MATLAB matrix operation are directly generated; meanwhile, the VB main program starts the MATLAB program by establishing an object type variable of Matlab. Application, and the MATLAB program directly runs after being started.
Referring to fig. 1, there is shown a configuration example of a belt conveyor dynamic analysis system formed in the present example. Based on the illustration, the belt conveyor dynamic analysis system 100 provided in this example is mainly composed of three units of a static calculation unit 110, a dynamic analysis unit 120 and a visual display unit 130, which are sequentially matched.
The static calculation unit 110 here builds a corresponding database 111 of empirical parameters, a static calculation module 112 and a calculation database.
The empirical parameter database 111 is used to store various empirical parameters of the complete machine system designed with the belt conveyor, where the complete machine system parameters include belt, roller and idler parameters of the belt conveyor, specifically including belt width, belt speed, capacity, various line segment parameters (length, inclination, etc.), initial belt type, initial idler type, initial drive arrangement, and dynamic load coefficients, simulated friction coefficients, friction coefficients of roller and belt, etc.
The various empirical data in the empirical parameter database 111 are formed by continuously optimizing initial data which is initially imported into the empirical parameter database according to the actual dynamic calculation analysis result in the system application process.
The static calculation module 112 in the unit performs data interaction with the experience parameter database 111, and can obtain the required complete machine system parameters from the experience parameter database according to the calculation requirement, and perform static calculations including complete machine electric power static calculation, braking moment static calculation, non-return moment static calculation, conveyer belt each point tension static calculation, carrier roller stress static calculation and the like.
The static calculation module 112 specifically performs corresponding static calculations based on the constructed belt conveyor design calculation formula.
The static calculation module 112 determines the driving power of the whole machine and the model data of the motor through static calculation of the electric power of the whole machine;
the present static calculation module 112 determines brake model and parameter data through static calculation of brake torque;
the present static calculation module 112 determines the backstop model and parameter data by backstop torque static calculation;
The static calculation module 112 determines the model and parameters of the tensioning device through static calculation of the tension of each point of the conveyor belt, and checks the rationality of the initial driving arrangement form and the model of the initially selected conveyor belt; simultaneously calculating the stress of the roller, and further determining the model of the roller;
the static calculation module 112 checks whether the initial carrier roller model is reasonable through the carrier roller stress static calculation.
The calculation database in the unit is used for storing relevant data determined by the static calculation module for static calculation.
Specifically, the calculation database includes a conveyor belt database 113, a roller sub-database 114 and a carrier roller sub-database 115, where the conveyor belt database 113 is used to store the conveyor belt model determined by the calculation of the static calculation module, and the rigidity and damping parameters of the conveyor belt corresponding to the conveyor belt model;
The roller sub database 114 is used for storing the roller model determined by the calculation of the static calculation module, and the rotation resistance coefficient and the rotation inertia parameter of the roller corresponding to the roller model;
The roller sub-database 115 is used for storing the roller model calculated and determined by the static calculation module, and the roller rotational resistance coefficient and the rotational inertia parameter corresponding to the roller model.
The static calculation unit 110 thus formed, when operating, first determines the overall system parameters of the belt conveyor, belt speed, transport capacity, various line section parameters (length, inclination, etc.), initial conveyor belt type, initial carrier roller type, initial drive arrangement, dynamic load factor, simulated friction factor, friction factor of the rollers and conveyor belt, etc.
The parameters of the whole system can be automatically extracted from an empirical parameter database in the system directly.
Alternatively, it may be formed by operating to select from a database of empirical parameters in the system.
Based on the determined parameters of the whole machine system, the static calculation unit 110 performs various static calculations based on the belt conveyor design calculation formula to obtain:
(1) The power of the whole machine shaft is used for determining the driving power of the whole machine and the model of the motor;
(2) The braking torque required by the whole machine is further determined, so that the type and the parameters of the brake are determined;
(3) The whole machine is used for stopping the moment, so that the model and parameters of the backstop are determined;
(4) The tension of each point of the conveyor belt is further determined, the model and parameters of the tensioning device are further determined, the rationality of the initial driving arrangement form and the model of the initially selected conveyor belt are checked, meanwhile, the stress of the roller is calculated, and the model of the roller is further determined;
(5) And checking whether the model of the initial carrier roller is reasonable or not according to the stress condition of the carrier roller.
Further, the static calculation unit 110 stores the corresponding parameter data to a calculation database according to the result of the calculation determination, for providing the initial calculation data for the dynamic analysis unit.
The specific process is as follows:
the static calculation unit 110 obtains the corresponding conveyer belt rigidity and damping parameters according to the conveyer belt model after calculating and determining the conveyer belt model parameters, and stores the conveyer belt rigidity and damping parameters and the calculated and determined conveyer belt model parameters into a conveyer belt database;
The static calculation unit 110 retrieves the rotation resistance coefficient and the rotation inertia parameter of the corresponding roller according to the calculated and determined roller model after calculating and determining the roller model, and stores the rotation resistance coefficient and the rotation inertia parameter in the roller sub-database together with the calculated and determined roller model;
After the model of the checking carrier roller is calculated, the static calculation unit 110 invokes the corresponding carrier roller rotation resistance coefficient and the rotational inertia parameter according to the calculated and determined carrier roller model, and stores the carrier roller rotation resistance coefficient and the rotational inertia parameter in the carrier roller sub-database together with the calculated model of the checking carrier roller.
The dynamic analysis unit 120 in the present system mainly includes a parameter extraction module 121, a complete unit dividing module 122, and a dynamic analysis module 123.
The parameter extraction module is in data connection with the conveyor belt database 113, the roller sub-database 114 and the carrier roller sub-database 115 in the static calculation unit 110, and is also in data connection with the experience parameter database 111, the dynamic analysis module 123 and the complete machine unit dividing module 122 in the static calculation unit 110.
After the static calculation unit 110 completes the related static calculation, the parameter extraction module 121 in the unit synchronously retrieves the rigidity and damping parameters of the conveying belt, the rotational resistance coefficient and the rotational inertia parameters of the roller, and the rotational resistance coefficient and the rotational inertia parameters of the carrier roller determined by the static calculation from the conveying belt database 113, the roller sub-database 114 and the carrier roller sub-database 115, respectively, and transmits the parameters to the complete unit dividing module 122 to construct a corresponding kinetic equation, and transmits the parameters to the dynamic analysis module 123 to perform dynamic analysis and calculation.
Based on this, the parameter extraction module 121 also adjusts the viscoelastic parameters of the conveyor belt stored in the empirical parameter database in the static calculation unit 110 according to different set values of start-up and stop control parameters.
The complete machine unit dividing module 122 in the unit is used for dividing the complete machine of the belt conveyor to be designed into a plurality of constituent units, and establishing a corresponding kinetic equation for each constituent unit, thereby forming a kinetic equation set corresponding to the complete machine of the belt conveyor.
Specifically, the complete machine unit dividing module 122 performs data interaction with the parameter extracting module 121, obtains the static calculated rigidity and damping parameters of the conveying belt, the rotational resistance coefficient and the rotational inertia of the roller and the rotational resistance coefficient and the rotational inertia of the carrier roller extracted by the parameter extracting module 121, and establishes a corresponding kinetic equation for each component unit according to the parameter data.
The specific establishment scheme is not limited herein and may be specifically determined according to actual requirements.
Here, it should be noted that, the overall unit dividing module 122 can form a corresponding kinetic equation set according to the dynamic analysis requirements of different states of the belt conveyor. Namely, dynamic analysis of a starting process and dynamic analysis of a stopping process are carried out on the belt conveyor, corresponding dynamic equation sets are respectively formed, and therefore the authenticity and reliability of the whole dynamic analysis result are improved.
The dynamic analysis module 123 in the unit performs data interaction with the parameter extraction module 121 and the complete machine unit dividing module 122 to obtain a kinetic equation set corresponding to the complete machine of the belt conveyor formed by the complete machine unit dividing module 122, and the rigidity and damping parameters, the rotary resistance coefficient and the rotary inertia parameters of the roller and the rotary resistance coefficient and the rotary inertia parameters of the carrier roller extracted by the parameter extraction module 121; and calculating the formed kinetic equation set based on the acquired related parameters such as the conveyor belt, the roller, the carrier roller and the like, so as to realize dynamic analysis.
For example, the dynamic analysis module 123 performs solution calculation on the matrix equation by calling the MATLAB matrix calculation module to calculate the displacement, speed, acceleration, and stress conditions of each discrete unit over time.
When the dynamic analysis unit 120 formed by the method operates in cooperation with the static calculation unit 110, firstly, the parameter extraction module 121 extracts the rigidity and damping parameters of the conveying belt, the rotation resistance coefficient and the rotational inertia parameters of the roller and the rotation resistance coefficient and the rotational inertia parameters of the carrier roller, which are determined by static calculation, from the static calculation unit 110;
Then, the whole machine unit dividing module 122 divides the whole machine of the belt conveyor into a plurality of units, and at the same time, the whole machine unit dividing module 122 establishes a corresponding kinetic equation for each unit according to the rigidity and damping parameters of the conveying belt, the rotational resistance coefficient and the rotational inertia parameters of the roller and the rotational resistance coefficient and the rotational inertia parameters of the carrier roller extracted by the parameter extracting module 121, thereby forming a kinetic equation set for the whole machine of the belt conveyor. Specifically, a corresponding kinetic equation set can be formed according to the dynamic analysis requirement of the starting process and the dynamic analysis requirement of the stopping process of the belt conveyor.
Finally, the dynamic analysis module 123 converts the dynamic equation set into a matrix equation by using a numerical method for the dynamic equation set constructed by the complete unit division module 122. Based on this, the dynamic analysis module 123 further invokes MATLAB to solve the matrix equation, so as to calculate and determine the displacement, speed, acceleration and stress conditions of each discrete unit over time.
The dynamic analysis unit 120 may actively transmit the dynamic analysis result to the visual display unit 130 for display, or store the dynamic analysis result, and retrieve the dynamic analysis result from the visual display unit 130 for display.
The following illustrates the implementation of the dynamic analysis system for the belt conveyor formed by this example in the dynamic analysis of the design of the belt conveyor based on this dynamic analysis system for the belt conveyor.
Referring to fig. 1, the overall analysis procedure is as follows:
(1) Initial design parameters of the belt conveyor system are determined.
The determined initial design parameters of the step comprise complete machine system parameters, bandwidth, belt speed, conveying capacity, parameters of each line section of the conveyor, conveyor belt type, carrier roller type, driving arrangement form and the like.
These parameters are first determined empirically by the belt conveyor designer and checked by a static design calculation unit of the belt conveyor dynamic analysis system.
(2) The belt conveyor is conventionally calculated in a static design.
And (2.1) carrying out static calculation based on the determined parameters of the whole machine system, the bandwidth, the belt speed, the conveying capacity, the parameters of each line section of the conveyor, the type of the conveyor belt, the type of the carrier roller and the driving arrangement form to obtain the power of the whole machine shaft, the braking moment, the backstop moment, the tension of each point of the conveyor belt and the stress of the carrier roller.
In the step, parameters of a whole machine system, bandwidth, belt speed, conveying capacity, parameters of each line section of the conveyor, parameters of a conveying belt, parameters of a carrier roller and the like are preliminarily determined by a belt conveyor designer, and the parameters are determined by checking three times through a static calculation process of a belt conveyor dynamic analysis system, so that the authenticity and accuracy of each parameter are ensured.
And (2.2) determining the driving power and the motor model of the whole machine by the shaft power of the whole machine, determining the brake model and the parameter by the braking moment, determining the backstop model and the parameter by the backstop moment, determining the tensioning device model and the parameter by the tension of each point of the conveyer belt, checking the rationality of the driving arrangement form, checking the model of the conveyer belt, determining the roller model, and checking the roller model by the stress of the roller.
In the step, a belt conveyor dynamic analysis system automatically completes corresponding static calculation aiming at different parameters based on corresponding belt conveyor design calculation formulas.
3. And determining simulation parameters required by dynamic analysis of the belt conveyor.
(3.1) Determining a belt conveyor starting parameter in a dynamic analysis unit of a belt conveyor dynamic analysis system, and dividing the belt conveyor starting parameter into a speed curve control starting and a control moment parameter starting; simultaneously, the belt conveyor is respectively started according to the control of the speed curve and the control of the moment parameters, and the parameters are respectively set, so that the accurate and comprehensive simulation of the starting process of the belt conveyor is realized; in this way, a system of kinetic equations corresponding to the start-up process of the belt conveyor is formed on the basis of different parameter settings.
(3.2) Determining the belt conveyor control stopping parameters in a dynamic analysis unit of the belt conveyor dynamic analysis system.
By way of example, three belt conveyor stopping speed profiles are provided in the present belt conveyor dynamic analysis system, each stopping speed profile having detailed parameter settings.
In the step, the shutdown parameters can be set according to the shutdown speed curves of each belt conveyor, so that the accurate and comprehensive simulation of the shutdown process of the belt conveyor is realized; in this way, a system of kinetic equations corresponding to the shutdown process of the belt conveyor is formed on the basis of different parameter settings.
And (3.3) setting the number of the whole machine dividing units and calculating the overtime protection setting time, thereby preventing program errors.
The more the number of the dividing units of the whole machine is, the more accurate the calculation result is, but the calculation process becomes long, and the calculation result is unstable. The greater the number of division cells at the same time, the more likely the condition number of the matrix in the aforementioned matrix equation becomes so great that MATLAB calculation is erroneous.
In the dynamic analysis system of the belt conveyor, overtime calculation protection time is set for the whole machine unit dividing module, the calculation is stopped when the overtime calculation protection time exceeds the set time, and a user is prompted to recalculate the whole machine unit dividing module again.
4. The conveyor belt viscoelastic parameters are determined.
Aiming at different control modes and different parameter settings in simulation parameters of the belt conveyor in the step (3), the initial input parameters of the conveyor belt are calibrated by using the parameter settings in the step (3), so that the influence on the viscoelasticity parameters of the conveyor belt is avoided.
After static calculation in the step (2), the system calls the viscoelasticity parameters (such as rigidity, damping and the like) of the conveyer belt in a conveyer belt database, so as to solve the problem that the viscoelasticity characteristics of the conveyer belt are different in different starting and stopping processes.
5. And generating an MATLAB executable file, establishing a dynamic analysis nonlinear equation set, and solving the equation set by using professional numerical calculation software MATLAB.
In the step, a dynamic analysis unit in a dynamic analysis system of the belt conveyor is used for dividing the whole machine of the belt conveyor into a plurality of units, and establishing a dynamic equation for each unit so as to form a dynamic equation set corresponding to the whole machine of the belt conveyor. And then, the dynamic analysis unit adopts a numerical method to solve a dynamic equation set, and the dynamic equation set is converted into a matrix equation. And finally, the dynamic analysis unit calls MATLAB to solve a matrix equation, and the displacement, speed, acceleration and stress conditions of each discrete unit along with the change of time are obtained.
When the dynamic analysis unit calls MATLAB, source codes and m files required by MATLAB matrix operation are directly generated first.
Furthermore, the dynamic analysis unit starts the MATLAB program by establishing an object type variable of Matlab. Application, and the MATLAB program runs after starting.
6. And returning the dynamic analysis calculation result.
And returning the calculation result of the dynamic analysis to the VB program, and converting the calculation result into an image by the VB for visual display.
Finally, it should be noted that the above-mentioned method of the present invention, or specific system units, or parts thereof, are implemented as a pure software architecture, and can be distributed on a physical medium, such as a hard disk, an optical disk, or any electronic device (such as a smart phone, a computer-readable storage medium), when the program code is loaded and executed by a machine (such as a smart phone, the machine becomes an apparatus for implementing the present invention). The methods and apparatus of the present invention may also be embodied in the form of program code that is transmitted over some transmission medium, such as over electrical wiring, optical fiber, or any other transmission medium, when the program code is received and loaded into and executed by a machine, such as a smart phone, the machine thereby providing an apparatus for practicing the methods.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The dynamic analysis system of the belt conveyor is characterized by comprising a static calculation unit, a dynamic analysis unit and a visual display unit;
The static calculation unit generates a static calculation result of the belt conveyor based on a belt conveyor design calculation model and generates calculation parameters required by dynamic analysis calculation;
The dynamic analysis unit is based on the calculation result of the static calculation unit, simultaneously, the whole belt conveyor is decomposed into a plurality of component units, a corresponding kinetic equation is established for each component unit to form a kinetic equation set of the corresponding belt conveyor, and then the kinetic equation set is subjected to calculation analysis by adopting a numerical method;
The visual display unit performs data interaction with the dynamic analysis unit so as to display the calculation result dynamically analyzed by the dynamic analysis unit;
the static computing unit comprises an experience parameter database, a static computing module and a computing database;
the experience parameter database is used for storing various experience parameters of the whole machine system designed by matching with the belt conveyor;
The static calculation module performs data interaction with the experience parameter database, and can acquire required complete machine system parameters from the experience parameter database according to calculation requirements, and perform static calculation including complete machine electric power static calculation, braking moment static calculation, non-return moment static calculation, conveyer belt each point tension static calculation, carrier roller stress static calculation and the like; the static calculation module stores corresponding parameter data to a calculation database according to a calculation determination result, and is used for providing initial calculation data for the dynamic analysis unit;
The calculation database comprises a conveying belt database, a roller sub-database and a carrier roller sub-database, wherein the conveying belt database is used for storing the conveying belt model calculated and determined by the static calculation module and the conveying belt rigidity and damping parameters corresponding to the conveying belt model; the roller sub database is used for storing the roller model calculated and determined by the static calculation module, and the rotation resistance coefficient and the rotation inertia parameter of the roller corresponding to the roller model; the carrier roller sub-database is used for storing the carrier roller model calculated and determined by the static calculation module, and a carrier roller rotational resistance coefficient and a rotational inertia parameter corresponding to the carrier roller model;
The static calculation module completes corresponding static calculation based on a constructed belt conveyor design calculation formula;
the dynamic analysis unit mainly comprises a parameter extraction module, a complete machine unit dividing module and a dynamic analysis module;
The parameter extraction module synchronously invokes the rigidity and damping parameters of the conveying belt, the rotary resistance coefficient and the rotary inertia parameters of the roller and the rotary resistance coefficient and the rotary inertia parameters of the carrier roller determined by the static calculation after the static calculation unit completes the related static calculation, transmits the parameters to the whole unit dividing module to construct a corresponding dynamic equation, and transmits the parameters to the dynamic analysis module to carry out dynamic analysis calculation;
the whole machine unit dividing module divides the whole machine of the belt conveyor to be designed into a plurality of constituent units, establishes a corresponding kinetic equation for each constituent unit, and accordingly forms a kinetic equation set corresponding to the whole machine of the belt conveyor;
The dynamic analysis module performs data interaction with the parameter extraction module and the whole machine unit dividing module to obtain a kinetic equation set corresponding to the whole machine of the belt conveyor, and the rigidity and damping parameters, the rotary resistance coefficient and the rotary inertia parameter of the roller and the rotary resistance coefficient and the rotary inertia parameter of the carrier roller, which are extracted by the parameter extraction module; and calculating the formed kinetic equation set based on the acquired related parameters such as the conveyor belt, the roller, the carrier roller and the like, so as to realize dynamic analysis.
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| CN202211256231.XA CN115562072B (en) | 2022-10-13 | 2022-10-13 | Dynamic analysis system of belt conveyor |
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