CN115562072A - 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, wherein the static calculation unit is used for calculating the dynamic analysis value of the belt conveyor; 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 decomposes the whole belt conveyor into a plurality of composition units, establishes a corresponding dynamic equation for each composition unit to form a dynamic equation set corresponding to the belt conveyor, and then performs calculation analysis on the dynamic equation set by adopting a numerical method; and the visual display unit performs data interaction with the dynamic analysis unit to display the calculation result of the dynamic analysis unit. The system can realize simulation of the belt conveyor under various unstable working conditions, dynamically analyze the stress condition of the belt conveyor in dynamic processes such as starting, braking and the like, ensure the 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 design of a belt conveyor is designed in a static calculation mode, in order to ensure the strength of each part, a large safety factor is often used in the design process, and the cost is possibly increased. In addition, the static calculation of the transmission cannot predict the stress condition of the belt conveyor in the dynamic processes of starting, braking and the like, which is often the most considered condition.
In view of the problems with solutions based on static calculations, the prior art also presents solutions for dynamic analysis of belt conveyors, however, the existing dynamic analysis scheme is two independent schemes which are split mutually relative to the static calculation scheme, and basic data required by the dynamic analysis scheme all need parameter data which are filled manually, so that the efficiency is very low.
Therefore, there is a need in the art for a dynamic analysis scheme for belt conveyors that can accommodate long distances and large volumes of traffic.
Disclosure of Invention
In view of the problems of the prior art, it is an object of the present invention to provide a dynamic analysis system for a belt conveyor, so as to overcome the problems of the prior art.
In order to achieve the purpose, 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 generates a static calculation result of the belt conveyor based on a design calculation model of the belt conveyor and generates calculation parameters required by dynamic analysis calculation;
the dynamic analysis unit is used for decomposing the whole belt conveyor into a plurality of constituent units simultaneously based on the calculation result of the static calculation unit, establishing a corresponding dynamic equation aiming at each constituent unit to form a dynamic equation set of the corresponding belt conveyor, and then performing calculation analysis on the dynamic equation set by adopting a numerical method;
and the visual display unit performs data interaction with the dynamic analysis unit to display the calculation result of the dynamic analysis unit.
In some examples of the invention, the static calculation unit comprises an experience parameter database, a static calculation module and a calculation database;
the experience parameter database is used for storing various experience parameters of the whole system designed by matching with the belt conveyor;
the static calculation module performs data interaction with the experience parameter database, can acquire required complete machine system parameters from the experience parameter database according to calculation requirements, and performs static calculation such as complete machine electric power static calculation, braking torque static calculation, non-return torque static calculation, tension static calculation of each point of a conveying belt, roller stress static calculation and the like; and the static calculation module stores corresponding parameter data to a calculation database according to the result of calculation determination, and is used for providing initial calculation data for the dynamic analysis unit.
In some examples of the invention, the calculation database includes a conveyor belt sub-database, a drum sub-database, and a idler sub-database, the conveying belt sub-database is used for storing the type of the conveying belt determined by the calculation of the static calculation module, and the rigidity and the damping parameter of the conveying belt corresponding to the type of the conveying belt; the roller sub-database is used for storing the type of the roller determined by the calculation of the static calculation module, and the rotation resistance coefficient and the moment of inertia parameter of the roller corresponding to the type of the roller; the carrier roller sub-database is used for storing the carrier roller models calculated and determined by the static calculation module, and the rotary resistance coefficient and the rotary inertia parameter of the carrier roller corresponding to the type of the carrier roller.
In some examples of the invention, the static calculation module performs the corresponding static calculation based on a constructed belt conveyor design calculation formula.
In some examples of the present invention, the dynamic analysis unit mainly includes a parameter extraction module, a whole unit division module, and a dynamic analysis module;
after the static calculation unit completes the related static calculation, the parameter extraction module synchronously transfers the conveying belt rigidity and damping parameters, the roller rotation resistance coefficient and the rotational inertia parameters, and the carrier roller rotation resistance coefficient and the rotational inertia parameters determined by the static calculation, transmits the parameters to the whole machine unit division module to construct a corresponding dynamic equation, and transmits the parameters to the dynamic analysis module to perform dynamic analysis calculation;
the whole unit dividing module divides a belt conveyor to be designed into a plurality of constituent units, and establishes a corresponding kinetic equation for each constituent unit, so as to form a kinetic equation set corresponding to the belt conveyor;
the dynamic analysis module performs data interaction with the parameter extraction module and the complete machine unit division module to acquire a dynamic equation set corresponding to the complete machine of the belt conveyor, which is formed by the complete machine unit division module, the rigidity and damping parameters of the conveying belt, 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 dynamic equation set based on the acquired related parameters of the conveying belt, the roller, the carrier roller and the like to realize dynamic analysis.
The dynamic analysis system for the belt conveyor organically integrates static calculation and dynamic analysis, can directly call related parameters from a conveyor belt, a roller and a carrier roller database after the static calculation, directly performs subsequent dynamic analysis and calculation, greatly improves the efficiency, and ensures the reliability of the dynamic analysis and calculation result.
When the dynamic analysis system for the belt conveyor is applied, the simulation under various unsteady working conditions such as starting, stopping control, emergency stopping, braking, non-return and the like of the belt conveyor can be realized, the stress condition of the belt conveyor in dynamic processes such as starting, braking and the like 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 for the belt conveyor can be effectively applied to the design of the belt conveyor with long distance and large transport capacity.
Meanwhile, when the system is applied, 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 visually know the dynamic process of the belt conveyor, and can assist designers to know the design of parts 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 in conjunction with the appended drawings and the detailed description.
Fig. 1 is a flow chart of the operation of a dynamic analysis system of a belt conveyor according to an embodiment of the present invention.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further illustrated below with reference to specific figures.
The invention provides a dynamic analysis system of a belt conveyor, which can organically integrate static calculation and dynamic analysis, realize the calculation simulation under various unsteady working conditions such as starting, controlling stopping, emergency stopping, braking, non-return and the like of the belt conveyor, and simultaneously can output displacement, speed, acceleration and tension curves of each point of the conveyor, thereby greatly improving the efficiency of engineering designers.
The dynamic analysis system of the belt conveyor mainly comprises a static calculation unit, a dynamic analysis unit and a visual display unit in structure.
The static calculation unit in the system specifically generates a static calculation result of the belt conveyor based on a design calculation model of the belt conveyor, 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 dynamic processes such as starting, braking and the like, and makes up for the shortages and loopholes of static design calculation; the dynamic analysis unit directly performs data interaction with the static calculation unit, directly decomposes the whole belt conveyor into a plurality of constituent units based on the calculation result of the static calculation unit, establishes a corresponding dynamic equation for each constituent unit to form a dynamic equation set of the corresponding belt conveyor, and performs calculation and analysis on the dynamic equation set by adopting a numerical method.
Meanwhile, the visual display unit and the dynamic analysis unit perform data interaction to display the calculation result of the dynamic analysis unit.
In some embodiments of the present invention, the respective belt conveyor design calculation models constructed in the static calculation unit therein are formed by respective belt conveyor design calculation formulas.
The specific formation of the calculation formula for designing the belt conveyor is not limited and can be determined according to actual requirements. Preferably, the belt conveyor design calculation model herein can be implemented based on the VB language.
In some embodiments of the present invention, a dynamic analysis unit in the system performs data interaction with a static calculation unit, and when a formed dynamic equation set is calculated to perform dynamic analysis, a MATLAB matrix calculation module is called to perform solution calculation on a matrix equation to obtain a calculation result of the dynamic analysis, so as to improve the efficiency of the dynamic analysis calculation and ensure 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 to obtain the analysis result calculated by the dynamic analysis unit, store the analysis result into the database unit in the system, and call the analysis result from the database unit to perform dynamic display after data storage, so that the data can be prevented from changing or being modified due to various emergencies in the transmission process, and the consistency of the storage and display of the analysis result can be ensured.
The following describes the flow of the dynamic analysis of the belt conveyor by the present system, with reference to the functions and configurations of the units in the present system.
When the dynamic analysis system for the belt conveyor is implemented, the dynamic analysis system can be presented by a corresponding software system.
By way of example, the belt conveyor dynamic analysis system can be implemented by adopting Visual Basic to realize interface setting, processing dynamic analysis process by using MATLAB and seamlessly fusing VB and MATLAB by adopting an OLE DB mode.
When the VB main program calls MATLAB, firstly, directly generating a source code and an m file required by MATLAB matrix operation; meanwhile, the VB main program starts an MATLAB program by establishing an object type variable 'Matlab.application', and the MATLAB program is directly operated after being started.
Referring to fig. 1, there is shown a constitutional example of the dynamic analysis system of the belt conveyor formed in this example. Based on the illustration, the dynamic analysis system 100 for a belt conveyor in the present example is mainly composed of three units, namely a static calculation unit 110, a dynamic analysis unit 120 and a visual display unit 130, which are sequentially matched with each other.
The static calculation unit 110 here builds a corresponding empirical parameter database 111, a static calculation module 112 and a calculation database.
The empirical parameter database 111 is used for storing various empirical parameters of the whole system designed in cooperation with the belt conveyor, where the parameters of the whole system include parameters of a conveyor belt, a roller and a carrier roller of the belt conveyor, specifically, parameters (length, inclination angle and the like) of each line section, a model of an initial conveyor belt, a model of an initial carrier roller, an initial driving arrangement form, a dynamic load coefficient, a simulated friction coefficient, a friction coefficient between the roller and the conveyor belt, and the like.
Each item of experience data existing in the experience parameter database 111 is formed by continuously optimizing initial data initially imported into the experience parameter database according to actual dynamic calculation analysis results in the system application process.
The static calculation module 112 in the unit performs data interaction with the experience parameter database 111, can acquire required complete machine system parameters from the experience parameter database according to calculation requirements, and performs static calculation including complete machine electric power static calculation, braking torque static calculation, check torque static calculation, tension static calculation of each point of a conveying belt, bearing roller stress static calculation and the like.
The static calculation module 112 performs corresponding static calculations based on the designed calculation formula of the belt conveyor.
The static calculation module 112 determines the complete machine driving power and the motor model data through the complete machine electric power static calculation;
the static calculation module 112 determines the model and parameter data of the brake through static calculation of the braking torque;
the static calculation module 112 determines the model and parameter data of the backstop through static calculation of the backstop torque;
the static calculation module 112 determines the type and parameters of the tensioning device through static calculation of the tension of each point of the conveyor belt, checks the reasonability of the initial drive arrangement form and the type of the initially selected conveyor belt; meanwhile, calculating the stress of the roller so as to determine the type 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 the relevant data determined by the static calculation module through static calculation.
Specifically, the calculation database includes a conveyor belt sub-database 113, a roller sub-database 114, and a carrier roller sub-database 115, where the conveyor belt sub-database 113 is used to store the conveyor belt model determined by the static calculation module, and the conveyor belt stiffness and damping parameters corresponding to the conveyor belt model;
the roller sub-database 114 is used for storing the roller model determined by the static calculation module, and the rotation resistance coefficient and the moment of inertia parameter of the roller corresponding to the roller model;
the carrier roller sub-database 115 is used for storing the carrier roller model determined by the static calculation module, and the carrier roller rotation resistance coefficient and the moment of inertia parameter corresponding to the carrier roller model.
When the static calculation unit 110 thus formed is in operation, it first determines the overall system parameters of the belt conveyor, such as the belt width, belt speed, transport capacity, parameters of each line section (length, inclination, etc.), initial conveyor belt model, initial idler model, initial drive layout form, and dynamic load coefficient, simulated friction coefficient, friction coefficient of rollers and conveyor belt, etc.
The parameters of the whole system can be directly and automatically extracted from an empirical parameter database in the system.
Alternatively, it may be formed by an operation selected from an empirical parameter database in the system.
Based on the determined parameters of the whole system, the static calculation unit 110 performs various static calculations based on a design calculation formula of the belt conveyor to obtain:
(1) The power of the whole machine shaft, and further determining the driving power of the whole machine and the type of a motor;
(2) The braking torque required by the whole machine further determines the type and parameters of the brake;
(3) The complete machine carries out torque backstopping, and then the type and the parameters of the backstop are determined;
(4) Tension of each point of the conveying belt further determines the type and parameters of the tensioning device, checks the reasonability of an initial driving arrangement form and the type of the initially selected conveying belt, and simultaneously calculates the stress of the roller so as to further determine the type of the roller;
(5) And checking whether the initial carrier roller type 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 the calculation database according to the result of the calculation determination, so as to provide the initial calculation data for the dynamic analysis unit.
The specific process is as follows:
after calculating and determining the parameters of the type of the conveying belt, the static calculation unit 110 calls the corresponding rigidity and damping parameters of the conveying belt according to the type of the conveying belt, and stores the rigidity and damping parameters and the calculated and determined type of the conveying belt into a conveying belt sub-database;
after the model of the drum is determined by calculation, the static calculation unit 110 calls the rotation resistance coefficient and the moment of inertia parameter of the corresponding drum according to the determined model of the drum, and stores the parameters and the model of the drum into the drum sub-database;
after the model of the checking carrier roller is calculated, the static calculation unit 110 calls the corresponding carrier roller rotation resistance coefficient and the moment of inertia parameter according to the calculated and determined carrier roller model, and stores the model and the model of the checking carrier roller into the carrier roller sub-database.
The dynamic analysis unit 120 in the present system mainly includes a parameter extraction module 121, a whole machine unit division module 122, and a dynamic analysis module 123.
The parameter extraction module is in data connection with the conveyor belt sub-database 113, the drum sub-database 114, and the carrier roller sub-database 115 in the static calculation unit 110, and is also in data connection with the empirical parameter database 111, the dynamic analysis module 123, and the whole unit division module 122 in the static calculation unit 110.
After the static calculation unit 110 completes the relevant static calculation, the parameter extraction module 121 in this unit synchronously retrieves the conveying belt stiffness and damping parameters, the drum rotational resistance coefficient and the rotational inertia parameters, and the carrier roller rotational resistance coefficient and the rotational inertia parameters determined by the static calculation from the conveying belt sub-database 113, the drum sub-database 114, and the carrier roller sub-database 115, respectively, transmits the parameters to the whole machine unit division module 122 to construct a corresponding dynamic equation, and transmits the parameters to the dynamic analysis module 123 to perform dynamic analysis calculation.
On the basis, the parameter extraction module 121 further adjusts the viscoelastic parameters of the conveyor belt stored in the experimental parameter database in the static calculation unit 110 according to different starting and stopping control parameter set values.
The whole unit dividing module 122 in this unit is configured to divide the whole belt conveyor to be designed into a plurality of constituent units, and establish a corresponding kinetic equation for each constituent unit, thereby forming a kinetic equation set corresponding to the whole belt conveyor.
Specifically, the whole machine unit dividing module 122 performs data interaction with the parameter extraction module 121, obtains the conveying belt stiffness and damping parameters, the rotary resistance coefficient and the rotary inertia of the drum, and the rotary resistance coefficient and the rotary inertia of the carrier roller, which are obtained by static calculation extracted by the parameter extraction module 121, and establishes a corresponding dynamic equation for each constituent unit according to the parameter data.
The specific establishment scheme is not limited and can be determined according to actual requirements.
It should be noted here that the complete machine unit dividing module 122 can form a corresponding set of kinetic equations according to dynamic analysis requirements of different states of the belt conveyor. Namely, dynamic analysis in the starting process and dynamic analysis in the stopping process are carried out on the belt conveyor, and corresponding dynamic equation sets are formed respectively, so that the authenticity and the reliability of the whole dynamic analysis result are improved.
A dynamic analysis module 123 in the unit performs data interaction with a parameter extraction module 121 and a complete machine unit division module 122 to obtain a dynamic equation set corresponding to the complete machine of the belt conveyor, which is formed by the complete machine unit division module 122, and the rigidity and damping parameters of the conveying belt, the rotary resistance coefficient and the rotational inertia parameters of the roller, and the rotary resistance coefficient and the rotational inertia parameters of the carrier roller, which are extracted by the parameter extraction module 121; and calculating the formed kinetic equation set based on the acquired related parameters of the conveying belt, the roller, the carrier roller and the like, so as to realize dynamic analysis.
For example, the dynamic analysis module 123 calculates the matrix equation by calling the MATLAB matrix calculation module to calculate the displacement, speed, acceleration, and stress of each discrete unit along with time.
When the dynamic analysis unit 120 formed in this way operates in cooperation with the static calculation unit 110, first, the parameter extraction module 121 extracts the conveying belt stiffness and damping parameters, the drum rotational resistance coefficient and the rotational inertia parameters, and the carrier roller rotational resistance coefficient and the rotational inertia parameters, which are determined by static calculation, from the static calculation unit 110;
next, the whole machine unit dividing module 122 divides the whole belt conveyor into a plurality of units, and meanwhile, the whole machine unit dividing module 122 establishes a corresponding dynamic equation for each unit according to the conveying belt stiffness and damping parameters, the roller rotational resistance coefficient and the rotational inertia parameters, and the carrier roller rotational resistance coefficient and the rotational inertia parameters extracted by the parameter extraction module 121, thereby forming a dynamic equation set for the whole belt conveyor. Particularly, according to the dynamic analysis requirements of the belt conveyor in the starting process and the stopping process, a corresponding set of kinetic equations is formed.
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 machine unit division module 122. On the basis, the dynamic analysis module 123 further calls the MATLAB to solve the matrix equation, so as to calculate and determine the displacement, speed, acceleration and stress conditions of each discrete unit along with the change of time.
According to the requirement, the dynamic analysis unit 120 may actively transmit the dynamic analysis result to the visual display unit 130 for displaying, or store the dynamic analysis result, and then the visual display unit 130 calls the dynamic analysis result for displaying.
For the dynamic analysis system of the belt conveyor formed in this example, the following illustrates the implementation process of the dynamic analysis system of the belt conveyor in the design scheme of the belt conveyor.
The whole analysis flow is as follows, as shown in FIG. 1:
(1) Initial design parameters of the belt conveyor system are determined.
The determined initial design parameters of the step comprise parameters of a whole machine system, bandwidth, belt speed, transport capacity, parameters of each line section of the conveyor, the type of a conveying belt, the type of a carrier roller, a driving arrangement form and the like.
These parameters are first determined empirically by the belt conveyor designer and checked by the static design calculation unit of the dynamic analysis system of the belt conveyor.
(2) Traditional static design calculations for belt conveyors.
And (2.1) carrying out static calculation based on the determined parameters of the whole machine system, bandwidth, belt speed, transport capacity, parameters of each line section of the conveyor, the type of the conveying belt, the type of the carrier roller and the driving arrangement form to obtain the power of a whole machine shaft, braking torque, check torque, tension of each point of the conveying belt and the stress of the carrier roller.
In the step, aiming at preliminarily determining the parameters of the whole system, the bandwidth, the belt speed, the transport capacity, the parameters of each line section of the conveyor, the parameters of the conveying belt, the parameters of the carrier roller and the like by a designer of the belt conveyor, the initial parameters are determined by checking for three times through the static calculation process of the dynamic analysis system of the belt conveyor, so that the authenticity and the accuracy of the parameters are ensured.
(2.2) determining the driving power and the motor model of the whole machine according to the shaft power of the whole machine, determining the brake model and the brake parameter according to the braking torque, determining the backstop model and the brake parameter according to the backstop torque, determining the tension of each point of the conveying belt, checking the reasonability of the driving arrangement form, checking the model of the conveying belt, determining the model of the roller and checking the model of the roller according to the stress of the roller.
In the step, the dynamic analysis system of the belt conveyor automatically completes corresponding static calculation aiming at different parameters based on a corresponding design calculation formula of the belt conveyor.
3. And determining simulation parameters required by dynamic analysis of the belt conveyor.
(3.1) determining starting parameters of the belt conveyor in a dynamic analysis unit of a dynamic analysis system of the belt conveyor, and dividing the starting parameters of the belt conveyor into a speed curve control starting mode and a control moment parameter starting mode; meanwhile, the starting is controlled according to a speed curve and the starting is controlled according to a control torque parameter, and the parameter setting is carried out respectively, so that the accurate and comprehensive simulation of the starting process of the belt conveyor is realized; this forms a set of kinetic equations corresponding to the start-up of the belt conveyor according to the different parameter settings.
And (3.2) determining a control stopping parameter of the belt conveyor in a dynamic analysis unit of the dynamic analysis system of the belt conveyor.
By way of example, the dynamic analysis system for the belt conveyor provides three stopping speed curves of the belt conveyor, and each stopping speed curve has detailed parameter settings.
In this way, the stopping parameters can be set according to the stopping speed curve of each belt conveyor in the step, so that accurate and comprehensive simulation of the stopping process of the belt conveyor is realized; this forms a set of kinetic equations corresponding to the belt conveyor stopping process according to the different parameter settings.
And (3.3) setting the number of the whole machine dividing units and calculating the overtime protection setting time to prevent the program from making mistakes.
The more the whole machine is divided into units, the more accurate the calculation result is, but the calculation process becomes long and the calculation result is unstable. Meanwhile, the more the number of the divided units is, the more the condition number of the matrix in the matrix equation becomes extremely large, so that the MATLAB calculation is wrong.
In the dynamic analysis system of the belt conveyor, the overtime calculation protection time is set for the whole machine unit dividing module, the calculation is stopped when the set time is exceeded, and the system user is prompted to recalculate the whole machine dividing unit.
4. And determining the viscoelastic parameters of the conveying belt.
Aiming at different control modes and different parameter settings in the simulation parameters of the belt conveyor in the step (3), the parameter setting in the step (3) is utilized to calibrate the initial input parameters of the conveyor belt, so that the influence on the viscoelasticity parameters of the conveyor belt is avoided.
Aiming at the problem that the viscoelastic parameters (such as rigidity and damping) of the conveyer belt in the conveyer belt database are different due to the fact that the system calls the conveyer belt viscoelastic parameters (such as rigidity and damping) in the conveyer belt database after the static calculation in the step (2), in order to solve the problem that the conveyer belt has different viscoelastic characteristics in different starting and braking processes, the dynamic analysis unit in the dynamic analysis system of the belt conveyer adjusts the viscoelastic parameters of the conveyer belt according to different starting and stopping control parameter set values set in the step (3).
5. And generating an MATLAB executable file, establishing a dynamic analysis nonlinear equation set, and solving the equation set by using special numerical computation software MATLAB.
In the step, a dynamic analysis unit in the dynamic analysis system of the belt conveyor firstly divides the whole belt conveyor into a plurality of units, and a dynamic equation is established for each unit, so that a dynamic equation set corresponding to the whole belt conveyor is formed. Then, the dynamic analysis unit solves the dynamic equation set by adopting a numerical method, and the dynamic equation set is converted into a matrix equation. And finally, the dynamic analysis unit calls MATLAB to solve the matrix equation to obtain the displacement, speed, acceleration and stress conditions of each discrete unit along with the change of time.
When the dynamic analysis unit calls the MATLAB, firstly, the source code and the m file required by MATLAB matrix operation are directly generated.
Further, the dynamic analysis unit specifically starts the MATLAB program by establishing an object type variable "MATLAB.
6. And returning a dynamic analysis calculation result.
And returning the calculation result of the dynamic analysis to a VB program, and converting the calculation result into an image for visual display by the VB.
Finally, it should be noted that the above-mentioned methods, or specific system units, or some of the units thereof, are purely software structures, and can be distributed on a physical medium such as a hard disk, an optical disk, or any electronic device (e.g. a smart phone, or a computer readable storage medium) through a program code, and when the program code is loaded and executed by a machine (e.g. a smart phone is loaded and executed), the machine becomes an apparatus for implementing the invention. The methods and apparatus of the present invention may also be embodied in the form of program code transmitted over some transmission medium, such as electrical cable, fiber optics, or via any other form of transmission, wherein, when the program code is received and loaded into and executed by a machine, such as a smart phone, the machine becomes an apparatus for practicing the invention.
The foregoing shows and describes the general principles, essential 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, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
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 design calculation model of the belt conveyor and generates calculation parameters required by dynamic analysis calculation;
the dynamic analysis unit is used for decomposing the whole belt conveyor into a plurality of constituent units based on the calculation result of the static calculation unit, establishing a corresponding dynamic equation aiming at each constituent unit to form a dynamic equation set of the corresponding belt conveyor, and then calculating and analyzing the dynamic equation set by adopting a numerical method;
and the visual display unit performs data interaction with the dynamic analysis unit to display the calculation result of the dynamic analysis unit.
2. The dynamic belt conveyor analysis system according to claim 1, wherein the static calculation unit includes an empirical parameter database, a static calculation module, and a calculation database;
the experience parameter database is used for storing various experience parameters of the whole system designed by matching with the belt conveyor;
the static calculation module performs data interaction with the experience parameter database, can acquire required complete machine system parameters from the experience parameter database according to calculation requirements, and performs static calculation such as complete machine electric power static calculation, braking torque static calculation, check torque static calculation, tension static calculation of each point of a conveying belt, roller stress static calculation and the like; and the static calculation module stores corresponding parameter data to a calculation database according to the result of calculation determination, and is used for providing initial calculation data for the dynamic analysis unit.
3. The dynamic analysis system for the belt conveyor according to claim 2, wherein the calculation database comprises a conveyor belt sub-database, a roller sub-database and a carrier roller sub-database, and the conveyor belt sub-database is used for storing the conveyor belt model determined by 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 type of the roller determined by the calculation of the static calculation module, and the rotation resistance coefficient and the moment of inertia parameter of the roller corresponding to the type of the roller; the carrier roller sub-database is used for storing the carrier roller model determined by the static calculation module, and the carrier roller rotation resistance coefficient and the moment of inertia parameter corresponding to the carrier roller model.
4. The dynamic belt conveyor analysis system of claim 2, wherein the static calculation module performs the corresponding static calculation based on a constructed belt conveyor design calculation formula.
5. The dynamic analysis system of the belt conveyor according to claim 1, wherein the dynamic analysis unit mainly comprises a parameter extraction module, a complete machine unit division module and a dynamic analysis module;
after the static calculation unit completes the related static calculation, the parameter extraction module synchronously transfers the conveying belt rigidity and damping parameters, the roller rotation resistance coefficient and the rotational inertia parameters, and the carrier roller rotation resistance coefficient and the rotational inertia parameters determined by the static calculation, transmits the parameters to the whole machine unit division module to construct a corresponding dynamic equation, and transmits the parameters to the dynamic analysis module to perform dynamic analysis calculation;
the whole unit dividing module divides a belt conveyor to be designed into a plurality of constituent units, and establishes a corresponding kinetic equation for each constituent unit, so as to form a kinetic equation set corresponding to the belt conveyor;
the dynamic analysis module performs data interaction with the parameter extraction module and the complete machine unit division module to acquire a dynamic equation set corresponding to the complete machine of the belt conveyor, which is formed by the complete machine unit division module, and the rigidity and damping parameters of the conveying belt, 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 of the conveying belt, the roller, the carrier roller and the like, so as to realize dynamic analysis.
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