CN110555272B - Intelligent configuration system and method based on luffing mechanism of gantry crane - Google Patents
Intelligent configuration system and method based on luffing mechanism of gantry crane Download PDFInfo
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- CN110555272B CN110555272B CN201910834939.0A CN201910834939A CN110555272B CN 110555272 B CN110555272 B CN 110555272B CN 201910834939 A CN201910834939 A CN 201910834939A CN 110555272 B CN110555272 B CN 110555272B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/82—Luffing gear
Abstract
The intelligent configuration system comprises a model selection part, a model selection part and a model selection part, wherein the model selection part is used for calculating part parameters, identifying and selecting sample data and preliminarily generating a model selection scheme; the configuration part is in bidirectional connection with the shape selection part and is used for intelligently configuring the scheme primarily generated by the shape selection part and checking the configuration result of the primary scheme; the main control part is connected with the configuration part and used for coordinating and controlling all modules of the configuration part; the modeling part is in bidirectional connection with the configuration part; for presenting the mockup to the user; the modeling part is also connected with the model selecting part and is used for supplementing successful cases to a database of the model selecting part; the intelligent design of the portal crane luffing mechanism of the invention obviously improves the design efficiency and quality of port machinery, shortens the development period of products, reduces the design cost of the products and promotes the informatization process of the manufacturing process of enterprises.
Description
Technical Field
The invention relates to the technical field of port crane design, in particular to an intelligent configuration system and method based on a portal crane luffing mechanism.
Background
The port crane is designed according to the characteristics and requirements of port loading and unloading operation. The portal crane is used as mechanical equipment special for wharf to carry out loading, unloading, carrying and stacking operations, and has the advantages of high-efficiency operation capability, low cost, construction cost, flexibility, strong universality and the like. These advantages have led to the wide application of gantry cranes in ports and docks. In the case of inland shipping and coastal medium and small non-specialized docks, gantry cranes are also being subjected to important handling tasks for a considerable period of time.
The product configuration design technology is one of key technologies for realizing automation and intellectualization of product design at present. However, most of research on the current product configuration technology is focused on mass customized production and product family design, while little research on small-volume production is focused on the fact that gantry crane production is a typical single-piece small-volume production mode based on customer orders, and the production mode enables mechanical product design of a gantry crane to be personalized and serialized. Therefore, if the intelligent configuration technology of the product can be applied to the design of the large gantry crane, the automation and intelligent development of the gantry crane can be promoted.
At present, the mechanical product design of the gantry crane still depends on the traditional design method and concept, and only the functional requirement of the product is considered in the design process, and the requirement of other stages in the life cycle of the product on a production model is rarely considered. More importantly, for personalized and serialized product design, the main method adopted at present is to modify and design a drawing similar to an order by adopting an analog method according to the functional requirement of a customer order, and design a new product drawing. In addition, three-dimensional modeling is an inevitable trend in product design, and is a necessary way for a digital model required at each stage of a manufacturing process. The gantry crane mainly comprises a mechanism and a structure. The mechanism part mainly comprises four mechanisms of lifting, running, turning and amplitude changing. And the luffing mechanism comprises a driving device and a metal structural part of the jib system, so that the special research on a product configuration strategy and a method of the luffing mechanism of the gantry crane is necessary, and the method has important practical significance and theoretical significance for the design of the whole gantry crane and the design of other port cranes.
The intelligent design of the luffing mechanism of the gantry crane is a special intelligent configuration method aiming at the luffing mechanism design of the gantry crane based on a three-dimensional model of a product. According to the design method, the requirement information of each stage of each product life cycle is considered from the beginning, a principle model, a product structure model and an intelligent configuration model of the gantry crane design are established, and according to the functional requirements and parameters of a customer order, the historical design model is dynamically configured to the greatest extent, so that parts of a new product are generated; if the parts cannot be generated by the configurator, the parts are redesigned by a designer and included in the data model of the product structure.
The intelligent design of the portal crane luffing mechanism of the invention obviously improves the design efficiency and quality of port machinery, shortens the development period of products, reduces the design cost of the products and promotes the informatization process of the manufacturing process of enterprises.
Disclosure of Invention
The invention aims to provide an intelligent configuration system and method based on a luffing mechanism of a gantry crane, which at least solve the problems that the traditional mechanical design only considers the functional requirement of a product, rarely considers the requirement of other stages in the life cycle of the product on a production model, and the traditional mechanical design adopts a simulation method to modify and design a drawing similar to an order, and has low efficiency and poor quality.
In order to achieve the above object, the present invention provides the following technical solutions:
preferably, the intelligent configuration system mainly comprises a selection part, a main control part, a configuration part and a modeling part. The model selection part is mainly responsible for calculating parameters of each part and identifying and selecting sample data to preliminarily generate a model selection scheme; the model selecting part and the configuration part are connected in a bidirectional manner, namely the configuration part can intelligently configure a scheme preliminarily generated by the model selecting part, and can check the configuration result of the preliminary scheme at the same time, and feed back the configuration result to the model selecting part according to the check result so as to modify and add a sample library of the model selecting part; the main control part is a bridge for connecting the user and the configuration part and is also a key factor for well coordinating and controlling each module of the configuration part, on one hand, configuration conditions proposed by the user are input through a system human-computer interface, the configuration conditions are quantized into target variables and transmitted to the configuration part, and on the other hand, the relationship among the modules of the configuration part is reasonably coordinated; the modeling part is mainly presented to the user entity model and is in bidirectional connection with the configuration part, the modeling part can display entity modeling of a scheme finally determined by the configuration part, can provide designed excellent examples for the configuration part, quickens the configuration process, and is connected with the model selection part, namely, the modeling part can supplement a final success case to an original database of the model selection part in a part sample mode.
The intelligent configuration system based on the luffing mechanism of the gantry crane preferably comprises a scheme type selection module and a parameterized part library management module. The configuration part comprises a configuration evaluation module, a configuration reasoning module and a product structure module. The main control part comprises a system man-machine interface and a main control module. The modeling part comprises a three-dimensional model assembly display module, a solid modeling, a part expansion module and a system database. The output end of the main control module is respectively connected with the input end of the product structure module, the input end of the configuration reasoning module and the input end of the configuration evaluation module, the output end of the parameterized part library management module, the output end of the scheme selection module, the output end of the product structure module and the output end of the configuration evaluation module are respectively connected with the input end of the configuration reasoning module, in addition, the output end of the parameterized part library management module is also connected with the input end of the product structure module, the input end of the configuration evaluation module is connected with the three-dimensional model assembly display module in a bidirectional connection manner, the output end of the three-dimensional model assembly display module is connected with the input end of the part expansion module, and the output end of the part expansion module is connected with the input end of the system database module.
The intelligent configuration system based on the luffing mechanism of the gantry crane preferably comprises the scheme selection of the rigid four-bar combined arm support system of the luffing mechanism of the gantry crane and the scheme selection of the driving device of the luffing mechanism. The rigid four-bar combined arm support comprises a main arm support, a large pull rod, a small pull rod and a trunk frame, and the driving device comprises a motor, a speed reducer, a brake, a coupler, a transmission shaft and other standard components.
The intelligent configuration system based on the portal crane luffing mechanism is characterized in that the parameterized part library management module is used for mainly managing the establishment, maintenance and updating of an instance library and a knowledge library. Knowledge base management comprises extraction and expression of configuration knowledge, parameterization of configuration conditions, correction and update of a knowledge base and the like. In the design process of the luffing mechanism of the portal crane, according to a set of design requirements or configuration conditions, the configuration system is automatically mapped into a set of configuration variables which are represented as a series of values of the configuration variables; instance library management mainly comprises instance matching and screening, instance modification, instance recycling and the like.
The intelligent configuration system based on the luffing mechanism of the portal crane is preferable, and the product structure module is mainly responsible for the establishment and maintenance of a product structure tree, the definition and modification of a basic product model, the instantiation of a model sample, the instantiation of parts, the version management of redesign and the like. And the system is responsible for extracting entity model data from a three-dimensional system, connecting the entity model data with a graph library and an instance library through a parameterized part library management module, extracting leaf node graphs and instances on a product structure tree, and preparing corresponding structure model objects for configuration reasoning of product parts.
According to the intelligent configuration system based on the luffing mechanism of the portal crane, preferably, the configuration reasoning module realizes the product intelligent design of the luffing mechanism of the portal crane from parts to parts according to the product structure model object provided by the product structure module and the reasoning rule provided by the knowledge base, and comprises the selection of parts of a driving device of the luffing mechanism part, the variable parameter design or variable characteristic design of the rigid four-bar combined arm support of the luffing mechanism, the secondary variable parameter design or secondary variable characteristic design of a non-standard part, the integral assembly configuration of the luffing mechanism part and the like through the extraction, comparison and screening of examples.
In the intelligent configuration system based on the luffing mechanism of the gantry crane, the configuration evaluation module preferably applies configuration constraints to evaluate or appropriately modify the configuration result of the configuration reasoning module, and if necessary, the contents of the instance library and the knowledge base can be added and modified.
According to the intelligent configuration system based on the luffing mechanism of the gantry crane, preferably, the main control module coordinates and controls other modules, the main control module is connected with the display and the input equipment, and a man-machine interaction interface is formed through the display and the input equipment, so that an engineer can conveniently debug the system or use the system conveniently.
The configuration method of the intelligent configuration system based on the luffing mechanism of the gantry crane preferably comprises the following steps:
step 1, inputting relevant design parameters and predicted cost in a man-machine interaction interface of a system according to the requirement of a user;
step 2, inputting a model selection scheme in a scheme model selection module according to a result calculated by the system;
step 3, the model of each part which is initially selected one by one is transmitted to a configuration reasoning module, and the configuration reasoning module realizes the product intelligent configuration of the luffing mechanism of the gantry crane from the part to the part according to the product structure model object provided by the product structure module and the reasoning rules provided by the knowledge base;
step 4, after the intelligent configuration is completed, the configured scheme is evaluated through an intelligent configuration evaluation module, and the integrity and consistency of a configuration result are ensured;
step 5, if the intelligent configuration formed luffing mechanism does not meet the input model selection scheme and the predicted cost after evaluation, repeating the steps 2-4 until the formed luffing mechanism meets the user requirement and can be actually produced, and then displaying the luffing mechanism finally meeting the requirement through a three-dimensional model assembly display module;
Step 6, manually judging the displayed three-dimensional model of the part, if the three-dimensional model is not qualified, inputting a model selection scheme again, and repeating the steps 2 to 5 until the three-dimensional model is judged to be qualified; supplementing the qualified three-dimensional model of the part to a system database through a part expansion module, and leading the newly added data into a parameterized part library management module by the system database so as to form a complete dead-loop configuration system.
Compared with the closest prior art, the technical scheme provided by the application has the following excellent effects:
the intelligent design of the portal crane luffing mechanism of the application obviously improves the design efficiency and quality of port machinery, shortens the development period of products, reduces the design cost of the products and promotes the informatization process of the manufacturing process of enterprises.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application. Wherein:
FIG. 1 is a schematic structural diagram of an intelligent configuration system for a luffing mechanism of a gantry crane according to an embodiment of the present application;
FIG. 2 is a flow chart of the intelligent configuration system of the luffing mechanism of the gantry crane according to an embodiment of the present application;
FIG. 3 is a detailed schematic diagram of a rigid four-bar linkage arm support of a gantry crane luffing mechanism according to an embodiment of the present application;
fig. 4 is a part layout of a gantry crane luffing mechanism driving apparatus according to an embodiment of the present application.
In the figure, 1, a main control module; 2. a scheme type selecting module; 3. a system human-machine interface; 4. an instance library; 5. a knowledge base; 6, a graphic library; 7. a parameterized parts library management module; 8. a configuration reasoning module; 9. assembling a display module by a three-dimensional model; 10. a part expansion module; 11. a product structure module; 12. configuring an evaluation module; 13. shaping the solid; 14; and (5) a system database.
Detailed Description
The application will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
In the description of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, merely for convenience of description of the present application and do not require that the present application must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. The terms "coupled" and "connected" as used herein are to be construed broadly and may be, for example, fixedly coupled or detachably coupled; either directly or indirectly through intermediate components, the specific meaning of the terms being understood by those of ordinary skill in the art as the case may be.
According to an embodiment of the present invention, as shown in fig. 1, the intelligent configuration system mainly includes a shape selecting part, a main control part, a configuration part and a modeling part. The model selection part is mainly responsible for calculating parameters of each part and identifying and selecting sample data to preliminarily generate a model selection scheme; the model selecting part and the configuration part are connected in a bidirectional manner, namely the configuration part can intelligently configure a scheme preliminarily generated by the model selecting part, and can check the configuration result of the preliminary scheme at the same time, and feed back the configuration result to the model selecting part according to the check result so as to modify and add a sample library of the model selecting part; the main control part is a bridge for connecting the user and the configuration part and is a key factor for well coordinating and controlling each module of the configuration part, on one hand, configuration conditions proposed by the user are input through the system human-computer interface 3, the configuration conditions are quantized into target variables and transmitted to the configuration part, and on the other hand, the relationship among the modules of the configuration part is reasonably coordinated; the modeling part is mainly presented to the user entity model and is also in bidirectional connection with the configuration part, the modeling part can display the entity model 13 of the final determination scheme of the configuration part, can provide designed excellent examples for the configuration part, quickens the configuration process, and is also connected with the model selection part, namely, the modeling part can supplement the final success case to the original database of the model selection part in the form of a part sample. The model selecting part comprises a scheme model selecting module 2 and a parameterized part library management module 7. The configuration section includes a configuration evaluation module 12, a configuration inference module 8, and a product structure module 11. The main control part comprises a system man-machine interface 3 and a main control module 1.
The modeling section includes a three-dimensional model assembly display module 9, a solid modeling 13, a part expansion module 10, and a system database 14. The output end of the main control module 1 is respectively connected with the input end of the product structure module 11, the input end of the configuration reasoning module 8 and the input end of the configuration evaluation module 12, the output end of the parameterized part library management module 7, the output end of the scheme selection module 2, the output end of the product structure module 11 and the output end of the configuration evaluation module 12 are respectively connected with the input end of the configuration reasoning module 8, in addition, the output end of the parameterized part library management module 7 is also connected with the input end of the product structure module 11, the input end of the configuration evaluation module 12 is connected, the product structure module 11 is in bidirectional connection with the three-dimensional model assembly display module 9, the output end of the three-dimensional model assembly display module 9 is connected with the input end of the part expansion module 10, the output end of the part expansion module 10 is connected with the input end of the system database 14 module, and the output end of the system database 14 module is connected with the input end of the parameterized part library management module 7.
According to a specific embodiment of the present invention, as shown in fig. 2, for a workflow diagram of the intelligent configuration system of the luffing mechanism of the gantry crane, a configuration method of the intelligent configuration system based on the luffing mechanism of the gantry crane is provided, and the configuration method comprises the following steps:
Step 1, inputting relevant design parameters and predicted cost in a man-machine interaction interface of a system according to the requirement of a user;
step 2, inputting a model selection scheme in the scheme model selection module 2 according to a result calculated by the system;
step 3, the model of each part which is selected one by one is transmitted to a configuration reasoning module 8, and the configuration reasoning module 8 realizes the intelligent configuration of the products from the parts to the parts of the luffing mechanism of the gantry crane according to the product structure model objects provided by the product structure module 11 and the reasoning rules provided by the knowledge base 5;
step 4, after the intelligent configuration is completed, the configured scheme is evaluated through the intelligent configuration evaluation module 12, so that the integrity and consistency of a configuration result are ensured;
step 5, if the intelligent configuration formed luffing mechanism does not meet the input model selection scheme and the predicted cost after evaluation, repeating the steps 2-4 until the formed luffing mechanism meets the user requirement and can be actually produced, and then displaying the luffing mechanism finally meeting the requirement through a three-dimensional model assembly display module 9;
step 6, manually judging the displayed three-dimensional model of the part, if the three-dimensional model is not qualified, inputting a model selection scheme again, and repeating the steps 2 to 5 until the three-dimensional model is judged to be qualified; the three-dimensional model of the part which is judged to be qualified is supplemented to a system database 14 through the part expansion module 10, and the system database 14 imports newly added data into the parameterized part library management module 7, so that a complete dead-loop configuration system is formed.
According to a specific embodiment of the present invention, step 2 specifically includes the steps of:
step 21, determining the length of a main arm frame, the length of a trunk frame front arm, the length of a rear arm and the length of a pull rod of a combined arm frame system according to the maximum amplitude, the minimum amplitude, the lifting height, the multiplying power of a lifting pulley block and the diameter of a pulley, determining the positions of a lower hinge point of an arm frame and the lower hinge point of the pull rod, carrying out example matching and screening from a parameterized part library management module 7 through a scheme selection module 2, and determining the primary design scheme of a rigid four-bar mechanism of the amplitude variation mechanism if the designed optimal example can meet the working requirement of the amplitude variation mechanism; if the source instance cannot meet the design requirement, turning to step 3, solving through a rule reasoning mechanism, and determining the design scheme of the rigid four-bar mechanism through difference comparison of the new instance and the old instance;
step 22, through the scheme of the preliminarily determined rigid four-bar mechanism, the dead weight of each component of the mechanism and the dead weight of the movable counterweight can be obtained, so that parameters such as amplitude-changing equivalent resistance, lifting point speed and the like are determined, and the further system selects the type of the amplitude-changing mechanism driving device according to the calculated design parameters through the scheme type selection module 2, and mainly comprises standard part types such as a motor, a speed reducer, a brake, a coupler, a high-speed transmission shaft and the like; the computer calculates each part through a programmed program, so that samples conforming to the checking result are selected from each sample library, then a design engineer performs manual selection, the samples are input into a scheme type selection module 2, the starting time and the acceleration of the motor are checked through a system, the amplitude variation speed is checked, and a whole set of driving device part type selection list is output through the system after the checking is passed;
Step 23, matching the main arm frame system of the luffing mechanism with a driving device through the scheme selection module 2, and further outputting a set of complete preliminary overall scheme of the luffing mechanism.
According to a specific embodiment of the present invention, step 3 specifically further comprises the following steps:
step 31, performing preliminary checking on the scheme determined preliminarily; according to the specification required by the user, the luffing mechanism required by the user calculates wind pressure in the second type wind load and the third type wind load, and checks the starting time and the acceleration of the motor of the luffing mechanism, the luffing speed and the like to check related constraint conditions;
step 32, instantiating the checked model sample and parts; the product structure module 11 extracts entity model data from the three-dimensional software system, is connected with the graph library 6 and the instance library 4 through the parameterized part library management module 7, extracts graphs and instances of various sample pieces and parts, and provides corresponding structure model objects for the configuration reasoning module 8;
step 33, the knowledge base 5 fuses the rule reasoning mechanism and the instance reasoning mechanism to form a hybrid reasoning mechanism, namely, firstly, a rule configuration library is accessed, and the rule reasoning mechanism is used for determining the variable parameter design or the variable characteristic design of the amplitude variation mechanism; if the design is unsuccessful, the method is changed into a secondary variable parameter design or variable characteristic design of the amplitude variation mechanism by using an example reasoning mechanism, and a design scheme is determined by similar example extraction, example comparison and screening; if the secondary variable parameter design or variable feature design fails or the example scheme is evaluated and then is considered to be too costly, redesigning;
And step 34, the configuration reasoning module 8 realizes the product intelligent configuration of the luffing mechanism of the gantry crane from the part to the part according to the product structure model object provided by the product structure module 11 and the reasoning rules provided by the knowledge base 5, and determines the integral assembly configuration of the luffing mechanism.
According to a specific embodiment of the present invention, step 4 specifically further comprises the following steps:
step 41, each part in actual production has configuration constraint, such as whether space interference exists in the mutual assembly of all rod pieces of the rigid four-bar linkage, whether the working principle of the four-bar linkage is met, whether the arrangement of the luffing mechanism driving device meets the space arrangement constraint, and whether all parts can be assembled correctly;
step 42, the configuration evaluation module 12 applies the configuration constraint to evaluate the configuration result of the configuration reasoning module 8, applies the geometric assembly interface rule and the functional interface rule as evaluation basis, and judges whether the configuration result meets the input model selection scheme and the expected cost;
step 43, if the configuration evaluation conclusion is satisfied, ensuring the integrity and consistency of the configuration result; and the valuable experience and knowledge in the work are reserved, and the part versions in the design scheme are classified into a knowledge base 5 and an instance base 4; if the configuration evaluation conclusion is unsatisfactory, jumping to the step 5;
The step 5 specifically further comprises the following steps:
step 51, analyzing the reason of dissatisfaction of the configuration result of the configuration reasoning module 8 according to the conclusion obtained by the intelligent configuration evaluation module 12, and further adopting specific measures to make proper modification on the design scheme;
step 52, if the rigid four-bar mechanism does not meet the configuration result, changing each bar, reducing the thickness of the bar, adjusting the length of the bar, and the like, and re-modeling and checking again until the condition is met;
step 53, if the luffing mechanism driving device does not meet the configuration result, applying a geometric assembly interface rule and a functional interface rule, and redesigning the scheme to perform example assembly matching, or redesigning individual parts, and adding and modifying the contents of the example library 4 and the knowledge library 5 if necessary;
step 54, repeating the steps 2-4 until the configuration result of the configuration reasoning module 8 is satisfied through the evaluation of the configuration evaluation module 12, indicating that the overall design scheme and the overall layout of the luffing mechanism meet the requirements of users and actual production, and then displaying the final luffing mechanism overall layout meeting the requirements through the three-dimensional model assembly display module 9;
The step 6 specifically further comprises the following steps:
step 61, the three-dimensional model assembly display module 9 is connected with a display, and the entity modeling 13 of the luffing mechanism main arm frame system and the luffing driving device is exported in three-dimensional software, so that a user and an engineer can more intuitively see the final design scheme of the luffing mechanism, and the manual judgment is convenient;
step 62, engineers can make a comparison with the existing similar examples according to the abundant design experience, and judge, or can import the three-dimensional model into dynamics simulation software to perform virtual prototype analysis, and users can click specific parts to display three views of the parts and related parameters, so that the manual judgment is more accurate and considerable;
step 63, if the artificial judgment is that the entity model is unqualified, inputting a model selection scheme again, and repeating the steps 2 to 5 until the judgment is qualified; the three-dimensional model of the part which is judged to be qualified is supplemented to a system database 14 through the part expansion module 10, and the system database 14 imports newly added data into the parameterized part library management module 7, so that a complete dead-loop configuration system is formed.
Fig. 3 is a schematic diagram of a rigid four-bar combined boom of a luffing mechanism of a gantry crane, which comprises a trunk frame, a large pull rod and a main boom according to the specific embodiment of the invention. The four-bar linkage mechanism, namely the double rocker mechanism taking the lower hinge point of the arm support and the rear hinge point of the large pull rod as the supporting point, is formed by the hinge shaft connection between the trunk frame and the main arm support and the large pull rod and the hinge shaft connection between the main arm frame and the rotary table and the large pull rod and the herringbone frame. When the amplitude-changing work is carried out, the lifted goods move approximately horizontally according to the motion track of the trunk frame head. The trunk frame is a member directly bearing hoisting load, and when the trunk frame is intelligently configured, the trunk frame front arm length and the trunk frame rear arm length are mainly considered, namely the positions of the front end point and the rear end point of the trunk frame to the hinge point connected with the main arm frame and the trunk frame respectively. The main arm support is the most complex stressed component in the arm support system, the head of the main arm support is hinged with the trunk frame, the root of the main arm support is hinged with the turntable, the main arm support bears larger load action on the longitudinal plane and the transverse plane, and the length of the main arm support is one of parameters considered by intelligent configuration. In addition, the structural form of the propeller strut is also very critical in intelligent configuration of the cantilever crane system, a large pull rod, a balance beam and a guide pulley support are arranged on a cross beam at the top of the propeller strut, a luffing mechanism platform is connected to a cross beam at the middle part of the propeller strut, and the propeller strut is required to support and transfer loads applied by the parts. Because of the large dead weight of the gantry crane boom system and the weight of the lifting load, a balance system is often designed for balancing the dead weight, and the system usually adopts a lever movable counterweight form and consists of a balance beam, a small pull rod and a movable counterweight. The balance beam is supported on the top cross beam of the herringbone frame, and the small pull rod is connected with the balance beam and the main arm frame through the hinge point and forms a plane four-bar mechanism together with the herringbone frame. When the intelligent configuration scheme is selected, the length of the small pull rod and the weight of the movable counterweight are also selected parameters. The example of the present invention considers the drive form of using a rack drive as the horn, and the layout of the rack horn drive is shown in fig. 4.
Fig. 4 is a part layout diagram of a luffing mechanism driving device of a gantry crane according to an embodiment of the present invention, where a motor is driven by a power supply to rotate and provide power. The output shaft of the motor is connected with the high-speed transmission shaft through the high-speed coupling, the other end of the high-speed transmission shaft is connected with the speed reducer through the high-speed coupling, so that torque of the motor is transmitted to the speed reducer, in a balanced arm support system, a relatively high amplitude variation speed is often adopted, large load change can occur in operation, in order to stop when the maximum load occurs, the maximum vibration caused by braking is not generated when the minimum load occurs, the arm support can be kept from being blown by wind even under the condition of bearing the maximum wind pressure in a non-working state, a brake is required to be assembled at the connecting part of the speed reducer and the high-speed transmission shaft, the output end of the speed reducer is connected with a driving pinion, the pinion is matched with a bearing to realize rotation, meanwhile, the upper part of the driving pinion is meshed with a rack, the rack is driven to do linear motion, and the rack swings around the axis of the pinion during amplitude variation. The intelligent configuration process of the driving device is that the type of the motor is selected, the motor type meeting the requirements is selected in a parameterized part library, relevant checking and checking calculation are carried out aiming at parameters of the motor type, then the diameter selection of a transmission shaft is determined, strength checking calculation is carried out, the transmission ratio required by the actual work of the speed reducer can be determined according to the rotating speed of the motor and the rotating speed of a driving gear, so that the speed reducer is selected and checked, the brake type is selected according to the larger one of the braking forces required in the working state and the non-working state, the maximum static moment on a brake wheel is related to the amplitude resistance on a rack, the reference circle diameter of the driving gear and the transmission ratio of the speed reducer, the calculated torque of the coupler is converted into the torque on the coupler according to the rated torque of the motor, and the diameters of the motor shaft and the input shaft of the speed reducer, and the two high-speed couplers and one low-speed coupler can be selected. The intelligent configuration system derives a three-dimensional model in three-dimensional software according to the assembly relation among the parts, and meanwhile, a driving device layout diagram shown in fig. 4 is generated, so that a designer and a user can more intuitively see a scheme result.
According to a specific embodiment of the invention, the scheme selection module 2 comprises a rigid four-bar combined boom system design scheme selection of a luffing mechanism of the gantry crane and a luffing mechanism driving device scheme selection. The rigid four-bar combined arm support comprises a main arm support, a large pull rod, a small pull rod and a trunk frame, and the driving device comprises a motor, a speed reducer, a brake, a coupler, a transmission shaft and other standard components.
According to the specific embodiment of the invention, the parameterized parts library management module 7 mainly manages the establishment, maintenance and updating of the instance library 4 and the knowledge library 5. The knowledge base 5 management includes extraction and expression of configuration knowledge, parameterization of configuration conditions, correction and update of the knowledge base 5, and the like. In the design process of the luffing mechanism of the portal crane, according to a set of design requirements or configuration conditions, the configuration system is automatically mapped into a set of configuration variables which are represented as a series of values of the configuration variables; instance library 4 management mainly includes instance matching and screening, instance modification, instance reclamation, and the like.
According to the embodiment of the invention, the product structure module 11 is mainly responsible for the establishment and maintenance of a product structure tree, the definition and modification of a basic product model, the instantiation of a model sample, the instantiation and redesigned version management of parts, and the like. And is responsible for extracting entity model data from a three-dimensional system, connecting with a graph library 6 and an instance library 4 through a parameterized part library management module 7, extracting leaf node graphs and instances on a product structure tree, and preparing corresponding structure model objects for configuration reasoning of product parts.
According to the specific embodiment of the invention, the configuration reasoning module 8 realizes the intelligent design of the portal crane luffing mechanism from part to part according to the product structure model object provided by the product structure module 11 and the reasoning rules provided by the knowledge base 5, and comprises the selection of the parts of the luffing mechanism part driving device, the variable parameter design or variable characteristic design of the luffing mechanism rigid four-bar combined arm support, the determination of the secondary variable parameter design or secondary variable characteristic design of a non-standard part, the integral assembly configuration of luffing mechanism parts and the like through example extraction, comparison and screening.
According to the specific embodiment of the invention, the configuration evaluation module 12 applies configuration constraints to evaluate or modify the configuration results of the configuration reasoning module 8 appropriately, and if necessary, the contents of the instance library 4 and the knowledge base 5 can be added and modified.
According to the specific embodiment of the invention, the main control module 1 coordinates and controls other modules, the main control module 1 is connected with a display and an input device, and a man-machine interaction interface is formed through the display and the input device, so that an engineer can conveniently debug a system or use the system conveniently.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. An intelligent configuration system based on a portal crane luffing mechanism, characterized in that the configuration system comprises:
the model selecting part is used for calculating part parameters and identifying and selecting sample data to preliminarily generate a model selecting scheme; the configuration part is in bidirectional connection with the model selection part and is used for intelligently configuring a scheme preliminarily generated by the model selection part, checking a configuration result of the initial scheme and feeding back the configuration result to the model selection part according to the checking result so as to modify and add a model selection part sample library;
the main control part is connected with the configuration part and used for coordinating and controlling each module of the configuration part; the modeling part is in bidirectional connection with the configuration part; for presenting the mockup to the user; the modeling section is further coupled to the form selection section for supplementing the database of the form selection section with success cases,
the model selecting part comprises a scheme model selecting module and a parameterized part library management module;
the configuration part comprises a configuration evaluation module, a configuration reasoning module and a product structure module;
The main control part comprises a system man-machine interface and a main control module;
the modeling part comprises a three-dimensional model assembly display module, an entity modeling, a part expansion module and a system database;
the output end of the system man-machine interface is connected with the input end of the main control module;
the system man-machine interface comprises a display and input equipment, wherein the display and the input equipment form a man-machine interaction interface for system debugging and user use, and the output end of the main control module is respectively connected with the input end of the product structure module, the input end of the configuration reasoning module and the input end of the configuration evaluation module; the output end of the parameterized part library management module, the output end of the scheme selection module, the output end of the product structure module and the output end of the configuration evaluation module are respectively connected with the input end of the configuration reasoning module, and the product structure module is in bidirectional connection with the three-dimensional model assembly display module; the output end of the three-dimensional model assembly display module is connected with the input end of the part expansion module; the output end of the part expansion module is connected with the input end of the system database module; the output end of the system database module is connected with the input end of the parameterized part library management module, and the scheme selection module comprises rigid four-bar combined arm support system design scheme selection of a portal crane luffing mechanism and scheme selection of a luffing mechanism driving device;
The rigid four-bar combined arm support comprises a main arm support, a large pull rod, a small pull rod and a trunk frame, the driving device comprises a motor, a speed reducer, a brake, a coupler and a transmission shaft, and the parameterized part library comprises a graphic library, an instance library and a knowledge library; the configuration evaluation module applies configuration constraint to evaluate or appropriately modify the configuration result of the configuration reasoning module, and the configuration evaluation module can also add and modify the contents of the instance library and the knowledge base;
the product structure module extracts entity model data from a three-dimensional system and is connected with the graphic library and the instance library through the parameterized part library management module; the product structure module is used for building and maintaining a product structure tree, defining and modifying a basic product model, instantiating a model sample, instantiating a part and managing a redesigned version.
2. An intelligent configuration method based on a luffing mechanism of a gantry crane, the configuration method using the intelligent configuration system based on the luffing mechanism of the gantry crane as set forth in claim 1, the configuration method comprising the steps of:
Step 1, inputting relevant design parameters and predicted cost in a man-machine interaction interface of a system according to the requirement of a user;
step 2, inputting a model selection scheme in a scheme model selection module according to a result calculated by the system;
step 3, the model of each part which is initially selected one by one is transmitted to a configuration reasoning module, and the configuration reasoning module realizes the product intelligent configuration of the luffing mechanism of the gantry crane from the part to the part according to the product structure model object provided by the product structure module and the reasoning rules provided by the knowledge base;
step 4, after the intelligent configuration is completed, the configured scheme is evaluated through an intelligent configuration evaluation module, and the integrity and consistency of a configuration result are ensured;
step 5, if the intelligent configuration formed luffing mechanism does not meet the input model selection scheme and the predicted cost after evaluation, repeating the steps 2-4 until the formed luffing mechanism meets the user requirement and can be actually produced, and then displaying the luffing mechanism finally meeting the requirement through a three-dimensional model assembly display module;
step 6, manually judging the displayed three-dimensional model of the part, if the three-dimensional model is not qualified, inputting a model selection scheme again, and repeating the steps 2 to 5 until the three-dimensional model is judged to be qualified; supplementing the qualified three-dimensional model of the part to a system database through a part expansion module, and leading the newly added data into a parameterized part library management module by the system database so as to form a complete dead-loop configuration system.
3. The configuration method of an intelligent configuration system based on a portal crane luffing mechanism according to claim 2, wherein the step 2 specifically further comprises the following steps:
step 21, determining the length of a main arm frame, the length of a trunk frame front arm, the length of a rear arm and the length of a pull rod of a combined arm frame system according to the maximum amplitude, the minimum amplitude, the lifting height, the multiplying power of a lifting pulley block and the diameter of a pulley of the luffing amplitude, determining the positions of a lower hinge point of the arm frame and the lower hinge point of the pull rod, carrying out example matching and screening from a parameterized part library management module through a scheme selection module, and determining the preliminary design scheme of a rigid four-bar mechanism of the luffing amplitude mechanism if the designed optimal example can meet the working requirement of the luffing amplitude mechanism; if the source instance cannot meet the design requirement, turning to step 3, solving through a rule reasoning mechanism, and determining the design scheme of the rigid four-bar mechanism through difference comparison of the new instance and the old instance;
step 22, the dead weight of each component of the mechanism and the dead weight of the movable counterweight can be obtained through a preliminarily determined scheme of the rigid four-bar mechanism, so that the variable amplitude equivalent resistance and the lifting point speed parameter are determined, and the further system selects the type of the variable amplitude mechanism driving device according to the calculated design parameters through a scheme type selection module, wherein the system mainly comprises a motor, a speed reducer, a brake, a coupler and a standard part type of a high-speed transmission shaft; the computer calculates each part through the programmed program,
The method comprises the steps of selecting samples conforming to checking results from various sample libraries, then manually selecting by a design engineer, inputting the samples into a scheme type selection module, checking the starting time and the acceleration of a motor and checking the amplitude-variable speed by a system, and outputting a whole set of driving device part type selection list by the system after checking;
step 23, matching the main arm frame system of the luffing mechanism with the driving device through the scheme selection module, and further outputting a set of complete preliminary overall scheme of the luffing mechanism.
4. The configuration method of an intelligent configuration system based on a portal crane luffing mechanism according to claim 2, wherein the step 3 specifically further comprises the following steps:
step 31, performing preliminary checking on the scheme determined preliminarily; according to the specification required by the user, the calculated wind pressure of the luffing mechanism required by the user in the second type wind load and the third type wind load, the starting time and the acceleration of the motor of the luffing mechanism are checked, and the luffing speed is checked to check related constraint conditions; step 32, instantiating the checked model sample and parts; the product structure module extracts entity model data from the three-dimensional software system, is connected with the graph library and the instance library through the parameterized part library management module, extracts graphs and instances of all the sample pieces and the parts and provides corresponding structure model objects for the configuration reasoning module;
Step 33, the knowledge base fuses the rule reasoning mechanism and the instance reasoning mechanism to form a hybrid reasoning mechanism, namely, firstly, a rule configuration base is accessed, and the rule reasoning mechanism is used for determining the variable parameter design or the variable characteristic design of the amplitude variation mechanism; if the design is unsuccessful, the method is changed into a secondary variable parameter design or variable characteristic design of the amplitude variation mechanism by using an example reasoning mechanism, and a design scheme is determined by similar example extraction, example comparison and screening; if the secondary variable parameter design or variable feature design fails or the example scheme is evaluated and then is considered to be too costly, redesigning;
and step 34, the configuration reasoning module realizes the product intelligent configuration of the luffing mechanism of the gantry crane from the part to the component according to the product structure model object provided by the product structure module and the reasoning rule provided by the knowledge base, and determines the integral assembly configuration of the luffing mechanism.
5. The configuration method of an intelligent configuration system based on a portal crane luffing mechanism according to claim 2, wherein the step 4 specifically further comprises the steps of:
step 41, each part in actual production has configuration constraint, such as whether space interference exists in the mutual assembly of all rod pieces of the rigid four-bar linkage, whether the working principle of the four-bar linkage is met, whether the arrangement of the luffing mechanism driving device meets the space arrangement constraint, and whether all parts can be assembled correctly;
Step 42, the configuration evaluation module applies the configuration constraint to evaluate the configuration result of the configuration reasoning module, applies the geometric assembly interface rule and the functional interface rule as evaluation basis, and judges whether the configuration result meets the input model selection scheme and the expected cost;
step 43, if the configuration evaluation conclusion is satisfied, ensuring the integrity and consistency of the configuration result; and the valuable experience and knowledge in the work are reserved, and the part versions in the design scheme are classified into a knowledge base and an instance base; if the configuration evaluation conclusion is unsatisfactory, jumping to the step 5;
the step 5 specifically further comprises the following steps:
step 51, analyzing the reason of dissatisfaction of the configuration result of the configuration reasoning module according to the conclusion obtained by the intelligent configuration evaluation module, and further adopting specific measures to appropriately modify the design scheme;
step 52, if the rigid four-bar mechanism does not meet the configuration result, changing each bar, reducing the thickness of the bar, adjusting the length of the bar, and re-checking the die until the condition is met;
step 53, if the luffing mechanism driving device does not meet the configuration result, applying a geometric assembly interface rule and a functional interface rule, and redesigning the scheme to perform example assembly matching, or redesigning individual parts, or adding and modifying the contents of an example library and a knowledge library;
Step 54, repeating the steps 2 to 4 until the configuration result of the configuration reasoning module is satisfied by the evaluation of the configuration evaluation module, indicating that the overall design scheme and the overall layout of the luffing mechanism meet the requirements of users and actual production, and then displaying the final luffing mechanism overall layout meeting the requirements through a three-dimensional model assembly display module;
the step 6 specifically further comprises the following steps:
step 61, the three-dimensional model assembly display module is connected with a display, and the entity modeling of the luffing mechanism main arm frame system and the luffing driving device is exported in three-dimensional software, so that a user and an engineer can more intuitively see the final design scheme of the luffing mechanism, and the manual judgment is convenient;
step 62, engineers can make a comparison with the existing similar examples according to the abundant design experience, and judge, or can import the three-dimensional model into dynamics simulation software to perform virtual prototype analysis, and users can click specific parts to display three views of the parts and related parameters, so that the manual judgment is more accurate and considerable;
step 63, if the artificial judgment shows that the solid model is unqualified, inputting the model selection scheme again, repeating the steps 2 to 5,
Until the judgment is qualified; supplementing the qualified three-dimensional model of the part to a system database through a part expansion module, and leading the newly added data into a parameterized part library management module by the system database so as to form a complete cyclic configuration system.
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