CN111651842A - Intelligent design system and method for hob type chopper - Google Patents

Intelligent design system and method for hob type chopper Download PDF

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Publication number
CN111651842A
CN111651842A CN202010495001.3A CN202010495001A CN111651842A CN 111651842 A CN111651842 A CN 111651842A CN 202010495001 A CN202010495001 A CN 202010495001A CN 111651842 A CN111651842 A CN 111651842A
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module
parameters
simulation
hob
model
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牛康
苑严伟
毛文华
赵博
张俊宁
周利明
吕程序
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Chinese Academy of Agricultural Mechanization Sciences
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Chinese Academy of Agricultural Mechanization Sciences
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    • G06COMPUTING; CALCULATING OR COUNTING
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    • G06F30/17Mechanical parametric or variational design
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00Computer-aided design [CAD]
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
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    • G06T17/00Three dimensional [3D] modelling, e.g. data description of 3D objects

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Abstract

A system and a method for intelligently designing a hob-type chopper are provided, the system for intelligently designing the hob-type chopper comprises: the user interface module is used for providing a user customized parameter input interface and displaying a system execution result to a user; the knowledge base module provides decision rules; the simulation library module provides a simplified three-dimensional simulation model; the reasoning decision module is used for reasoning design parameters according to the data and the examples provided by the user interface module, the knowledge base module and the simulation base module; the three-dimensional solid modeling module is used for establishing a three-dimensional solid model; the engineering drawing module is used for generating an engineering drawing document; the user interface module, the knowledge base module and the simulation base module are respectively connected with the reasoning decision module, the reasoning decision module is respectively connected with the three-dimensional solid modeling module and the engineering drawing module, and the three-dimensional solid modeling module and the engineering drawing module are respectively connected with the user interface module. The invention also provides a design method of the intelligent design system of the hob type chopper.

Description

Intelligent design system and method for hob type chopper
Technical Field
The invention relates to the agricultural machinery technology, in particular to a system and a method for intelligently designing a hob type chopper.
Background
The quality of mechanical products is 75% dependent on the design process, crops are various in planting types and various in planting modes in China, and agricultural machinery and equipment have the requirements of high functional integration level, small batch, various types and the like. The profit space of agricultural machinery products in China is small, the research and development capacity of new products of most agricultural machinery enterprises is weak, the requirements of users on increasingly diversification, individuation and customization are met, and the improvement of the product design efficiency and the reduction of the design cost are important ways for improving the competitiveness of agricultural machinery equipment production enterprises in China. The agricultural equipment is designed and developed into a new product by a common experience and analogy method, and a prototype machine with improved structural parameter production and modification needs to be verified by repeated tests, so that the period is long and the cost is high.
The chopper is widely applied to a harvester, a chopper and a pulverizer in the field of agricultural equipment, and common structural types include a hob type, a flail type and a disc cutter type. The hob type chopper has the advantages of good working load uniformity, small operation vibration, high chopping quality, high cleaning rate and the like, and is widely applied to large and medium-sized green fodder harvesters and corn harvesting harvesters.
The hob type chopper has the advantages of complex structure, high manufacturing cost, more design parameters and complex structural design calculation. Hob-type chopper mainly comprises a roller, a movable cutter group, a belt wheel group, a housing, a fixed cutter and the like, and factors influencing the chopping performance comprise: the cutting edge angle, the sliding cutting angle and the cutting gap angle of the movable blade, the cutting gap between the movable blade and the fixed blade, the configuration height of the fixed blade, the rotating speed of the hob roller, the length of a cutting section, the productivity, the physical and mechanical properties of materials and the like. The shredding capacity mainly affects the factors: the configuration relationship between the movable blade and the fixed blade, the structural parameters of the movable blade, the rotating speed of the roller and the biomechanical characteristics of the object. When the operation object, the efficiency, the chopping performance and the use condition are changed, the structural parameters need to be redesigned and adjusted, the workload is large, all key points are difficult to grasp during design, the optimized design of a mechanism is difficult to complete, the design difficulty is large, the period is long, and the design defect is easy to occur.
Disclosure of Invention
The invention aims to solve the technical problem in the prior art and provides a system and a method for intelligently designing a hob type chopper.
In order to achieve the above object, the present invention provides an intelligent design system for a hob type chopper, which includes:
the user interface module is used for providing a user customized parameter input interface and displaying the execution result of the system to the user;
the knowledge base module is used for providing decision rules, including formulas, rules and experiences used by reasoning the user customized parameters to the design parameters;
the simulation library module is used for providing a simplified three-dimensional simulation model;
the reasoning decision module is used for reasoning design parameters according to the data and the examples provided by the user interface module, the knowledge base module and the simulation base module;
the three-dimensional solid modeling module is used for establishing a three-dimensional solid model of the hob type chopper; and
the engineering drawing module is used for generating the hob type shredder engineering drawing document;
the system comprises a user interface module, a knowledge base module, a simulation base module, an inference decision module, a three-dimensional solid modeling module and an engineering drawing module, wherein the user interface module, the knowledge base module and the simulation base module are respectively connected with the inference decision module, the inference decision module is respectively connected with the three-dimensional solid modeling module and the engineering drawing module, and the three-dimensional solid modeling module and the engineering drawing module are respectively connected with the user interface module.
The hob type intelligent chopper design system further comprises an example library module, wherein the example library module is used for providing an example of the chopper three-dimensional model, the example library module is connected with the reasoning decision module, and the reasoning decision module is combined with the structural position relation between the knowledge base module and each part of the example library module to establish the relation between the customized demand parameters and the model driving correlation parameters.
In the system for intelligently designing the hob type chopper, the model driving correlation parameters derive the design parameters of the hob type chopper model according to rules in the knowledge base module.
In the system for intelligently designing the hob type chopper, the model driving related parameters comprise overall parameters and key part configuration parameters, the overall parameters comprise chopping length, feeding speed, roller rotating speed, moving blade number, production rate, operation breadth and operation speed, and the key part configuration parameters comprise a moving blade spiral cutting edge helix angle, a moving blade edge angle, an installation forward inclination angle, a cutting edge inclination angle, a sliding cutting angle and a fixed blade edge angle.
In the above intelligent design system of the hob type chopper, the example library module comprises a three-dimensional model and an engineering legend of components of the hob type chopper, the components of the hob type chopper comprise a movable cutter set, a fixed cutter, a roller, a belt wheel set and a housing, and the movable cutter set comprises a movable cutter, a movable cutter holder and a supporting plate; the roller comprises a roller shaft, a roller pipe shaft and a breadth disc; the belt pulley set comprises a hub and a belt pulley; and automatically adjusting the structure and the size of the part model in the instance library module by the model driving correlation parameters, and automatically generating customized derived parts and then assembling the parts into the hob type chopper.
The intelligent design system for the hob type chopper comprises a simulation test module, wherein the simulation test module is used for performing a performance simulation test on the hob type chopper and optimizing design parameters according to a simulation result, and the simulation test module is respectively connected with the reasoning decision module and the user interface module.
In order to better achieve the above object, the present invention further provides an intelligent design method for a hob type chopper, wherein the design of the hob type chopper by using the intelligent design system for the hob type chopper comprises the following steps:
s100, inputting parameters through a user interface module;
s200, the inference decision module searches for an applicable rule in the knowledge base module according to the input parameters, deduces model driving correlation parameters and further deduces design parameters;
s300, the simulation library module establishes a simulation model according to the design parameters, optimizes the design parameters, circularly repeats the simulation model establishing process by using the optimized design parameters until the obtained performance index reaches the final optimized parameter of the design index, and optimizes the knowledge library module according to the simulation test result;
s400, the three-dimensional entity modeling module establishes a three-dimensional simulation model of the hob type chopper according to the final optimization parameters; and
and S500, drawing the engineering drawing of the shredder and each part according to the final optimized parameters by an engineering drawing module.
In the method for intelligently designing the hob type chopper, step S300 further includes performing a simulation performance test, performing the simulation performance test on the simulation model established by the simulation library module, optimizing the design parameters, and repeating the process of establishing the simulation model and performing the simulation performance test by using the optimized parameters in a circulating manner until the final optimized parameters with the performance indexes reaching the design indexes are obtained.
In the method for intelligently designing the hob type chopper, in step S400, the three-dimensional entity modeling module establishes a three-dimensional simulation model of the hob type chopper according to the final optimization parameters and the instance library module, performs theoretical simulation analysis on structural strength, dynamics and discrete media on the three-dimensional simulation model, optimizes design parameters according to simulation analysis results, and expands the instance library module.
In the method for intelligently designing the hob type chopper, in step S500, the engineering drawing module draws the engineering drawings of the hob type chopper and each part according to the final optimization parameters and the instance library module, and expands the instance library model.
The invention has the technical effects that:
the design intelligence level of the hob type chopper is obviously improved, the development capacity of the chopper is enhanced, the development period of the chopper is shortened, the design cost of the chopper is reduced, and the research and development capacity and market competitiveness of enterprises are improved; when the intelligent design system is used, only parameters need to be input, the shredder model and the drawing can be automatically generated, and a simulation performance cycle optimization test is performed, so that the design level is greatly improved, human errors in the design process are reduced, more design and parameter optimization work is undertaken by a computer, the repetitive labor of designers is reduced, and the energy and time of the designers are saved; meanwhile, the design idea of the chopper can be displayed in a programmed mode, the three-dimensional entity model of the chopper and the engineering drawing are accumulated in the instance library, so that enterprise designers can conveniently use the chopper with reference, and the technical progress is accelerated.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
FIG. 1 is a block diagram of an intelligent shredder design system according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating an embodiment of a method for intelligently designing a shredder;
FIG. 3 is a customized requirement parameter entry interface for the shredder intelligent design system in accordance with an embodiment of the present invention;
FIG. 4 is a model driven correlation parameter interface of the shredder intelligent design system in accordance with an embodiment of the present invention;
fig. 5 is a shredder model design parameter interface of the shredder intelligent design system in accordance with an embodiment of the present invention.
Wherein the reference numerals
1 user interface module
2 knowledge base module
3 simulation library module
4 reasoning decision module
5 three-dimensional solid modeling module
6 engineering drawing module
7 example library module
8 simulation test module
Detailed Description
The invention will be described in detail with reference to the following drawings, which are provided for illustration purposes and the like:
referring to fig. 1, fig. 1 is a block diagram of an intelligent shredder design system according to an embodiment of the present invention. The invention discloses an intelligent design system of a hob type chopper, which comprises: the user interface module 1 is used for providing a user customized parameter input interface and displaying an execution result to a user display system, acquiring a customized parameter input by the user, displaying a simulation test result, a three-dimensional model and an engineering drawing to the user, forming man-machine interaction through input and output equipment such as a keyboard, a mouse and a display screen, and the like, inputting a parameter required by design through the user interface module 1 by a designer, and automatically designing the system according to input information; the knowledge base module 2 is used for providing decision rules, including the knowledge of formulas, rules, experiences and the like used by reasoning the user customized parameters to the design parameters, and specifically includes a mechanical design manual, an agricultural machine design manual and a chopper design parameter selection method and basis recorded in the mechanical industry standard 'green feed chopper JB/T7144-2007'; the simulation library module 3 is used for providing a chopper simplified three-dimensional simulation model example; the reasoning decision module 4 is used for reasoning design parameters including design parameters required by the establishment of a simulation test model and a three-dimensional entity model and the generation of an engineering drawing according to the data and examples provided by the user interface module 1, the knowledge base module 2 and the simulation base module 3; the three-dimensional solid modeling module 5 is used for establishing a three-dimensional solid model of the hob type chopper; the engineering drawing module 6 is used for generating the hob type shredder engineering drawing document; the user interface module 1, the knowledge base module 2 and the simulation base module 3 are respectively connected with the reasoning decision module 4, the reasoning decision module 4 is respectively connected with the three-dimensional entity modeling module 5 and the engineering drawing module 6, and the three-dimensional entity modeling module 5 and the engineering drawing module 6 are respectively connected with the user interface module 1.
In the embodiment, the system further comprises an embodiment library module 7 used for providing three-dimensional model examples and engineering drawing examples of each part of the shredder, wherein the embodiment library module 7 is connected with the reasoning decision module 4, and the reasoning decision module 4 infers design parameters according to data and examples provided by the user interface module 1, the knowledge base module 2, the simulation base module 3 and the embodiment library module 7. And the reasoning decision module 4 is combined with the structural position relationship between the components of the chopper of the knowledge base module 2 and the example base module 7 to establish the relationship between the customized demand parameters and the model driving association parameters. The model-driven correlation parameters derive the design parameters of the hob shredder model according to rules in the knowledge base module 2. The model driving correlation parameters comprise overall parameters and key part configuration parameters, the overall parameters comprise chopping length, feeding speed, roller rotating speed, moving blade number, production rate, operation width and operation speed, the key part configuration parameters comprise a moving blade spiral cutting edge spiral angle, a moving blade edge angle, an installation forward rake angle, a cutting edge inclination angle, a sliding cutting angle and a fixed blade edge angle, a correlation expression between a model and an engineering drawing and the model driving correlation parameters is established, and the model driving correlation parameters are used for reasoning chopper model design parameters according to rules in a knowledge base. The embodiment library module 7 of this embodiment includes a three-dimensional model and an engineering legend of components and parts of a hob type chopper, the components and parts of the hob type chopper include a movable cutter set, a fixed cutter, a roller, a belt pulley set and a housing, and the movable cutter set includes a movable cutter, a movable cutter holder and a supporting plate; the roller comprises a roller shaft, a roller pipe shaft and a breadth disc; the belt pulley set comprises a hub and a belt pulley; and the model driving associated parameter driving is used for realizing the automatic adjustment of the structure and the size of the part model in the example library module 7, automatically generating customized derived parts and then assembling the customized derived parts into the hob type chopper.
In the embodiment, the device further comprises a simulation test module 8, wherein the simulation test module 8 is used for a performance simulation test of the hob type chopper and optimizing chopper design parameters according to a simulation result, the simulation test module 8 is respectively connected with the reasoning decision module 4 and the user interface module 1, a simplified three-dimensional simulation model is established by combining parameters generated by the reasoning decision module and a simulation model example, the structural strength, dynamics and discrete medium theoretical simulation analysis are carried out, and the design parameters are optimized according to the simulation result. The output of the user interface module 1, the output of the knowledge base module 2, the output of the simulation base module 3 and the output of the instance base module 7 of the embodiment are all connected with the input of the inference decision module 4, the output of the inference decision module 4 is connected with the input of the simulation test module 8, the input of the three-dimensional solid modeling module 5 and the input of the engineering drawing module 6, and the output of the simulation test module 8, the output of the three-dimensional solid modeling module 5 and the output of the engineering drawing module 6 are connected to the input of the user interface module 1.
Referring to fig. 2, fig. 2 is a flowchart illustrating an intelligent design method for a shredder according to an embodiment of the present invention. The invention relates to an intelligent design method of a hob type chopper, which adopts the intelligent design system of the hob type chopper to design the hob type chopper and comprises the following steps:
step S100, inputting parameters through the user interface module 1: the designer inputs customization parameters through the user interface module 1, wherein the customization parameters comprise performance parameters, structural configuration parameters, motion parameters and the like, specifically, the performance parameters comprise feeding amount, operation speed, stubble cutting height and cutting length, the structural configuration parameters comprise chopper width, roller diameter, number of grooves of a driving belt pulley and number of moving knife blades, and the motion parameters comprise chopper input rotating speed and knife shaft rotating speed; the customized parameters realized by the system can be divided into three types, namely performance parameters, structural configuration parameters and motion parameters, specifically, the performance parameters comprise feeding amount, operation speed, stubble cutting height and cutting length, the structural configuration parameters comprise chopper width, roller diameter, driving belt pulley groove number and moving blade number, the motion parameters comprise input rotating speed and cutter shaft rotating speed, and the customized parameters are shown in fig. 3, wherein fig. 3 is a customized required parameter input interface of the intelligent chopper design system in one embodiment of the invention;
step S200, the inference decision module 4 searches for an application rule in the knowledge base module 2 according to the input customized parameters, deduces model driving related parameters, and further deduces design parameters, including overall parameters such as chopping length, feeding speed, roller rotating speed, moving blade number, productivity, operation breadth, operation speed and the like, and values of configuration parameters of key parts such as a moving blade spiral cutting edge helix angle, a moving blade edge angle, an installation forward rake angle, a cutting edge inclination angle, a sliding cutting angle, a fixed blade edge angle and the like, and further deduces detailed structural parameters of the design parameters including a moving blade, a moving blade seat, a supporting plate, a roller shaft, a disc, a hub and a belt pulley, and referring to FIG. 4, FIG. 4 is a model driving related parameter interface of the intelligent design system of the chopper of the embodiment of the invention;
step S300, the simulation library module 3 establishes a simulation model according to the design parameters, optimizes the design parameters, and circularly repeats the simulation model establishing process by using the optimized design parameters until the obtained performance indexes reach the final optimized parameters of the design indexes, and optimizes the knowledge library module 2 according to the simulation test results, see FIG. 5, wherein FIG. 5 is a design parameter interface of a shredder model of the intelligent design system of the shredder in one embodiment of the invention;
s400, the three-dimensional entity modeling module 5 establishes a three-dimensional simulation model of the hob type chopper according to the final optimization parameters; and
and S500, drawing the engineering drawing of the shredder and each part according to the final optimization parameters by the engineering drawing module 6.
Step S300 further includes performing a simulation performance test, performing the simulation performance test on the simulation model established by the simulation library module 3 by using the simulation test module 8, optimizing the design parameters, repeating the process of establishing the simulation model and performing the simulation performance test circularly by using the optimized parameters until the obtained final optimized parameters of which the performance indexes reach the design indexes, and optimizing the knowledge base according to the simulation test result. In step S400, preferably, the three-dimensional solid modeling module 5 establishes a three-dimensional simulation model of the hob type chopper according to the final optimization parameters and the instance library module 7, performs theoretical simulation analysis of structural strength, dynamics and discrete medium on the three-dimensional simulation model, optimizes design parameters according to simulation analysis results, and expands the instance library module 7. In step S500, preferably, the engineering drawing module 6 draws the hob type shredder and the engineering drawing of each part according to the final optimization parameters and the example library module 7, and expands the example library model.
The invention fully utilizes the three-dimensional solid model of the existing chopper, deeply fuses design experience, design criteria and simulation test results, realizes the intelligent design of the chopper, reduces the experience requirements of designers, lightens the design task amount, reduces human factor errors in the design process, standardizes the consistency of the design model structure and drawings, improves the design quality and efficiency, shortens the product development period, enhances the development capability of the series products of the chopper, and reduces the design cost, thereby improving the production efficiency of enterprises and the market competitiveness.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. The utility model provides an intelligent design system of hob type chopper which characterized in that includes:
the user interface module is used for providing a user customized parameter input interface and displaying the execution result of the system to the user;
the knowledge base module is used for providing decision rules, including formulas, rules and experiences used by reasoning the user customized parameters to the design parameters;
the simulation library module is used for providing a simplified three-dimensional simulation model;
the reasoning decision module is used for reasoning design parameters according to the data and the examples provided by the user interface module, the knowledge base module and the simulation base module;
the three-dimensional solid modeling module is used for establishing a three-dimensional solid model of the hob type chopper; and
the engineering drawing module is used for generating the hob type shredder engineering drawing document;
the system comprises a user interface module, a knowledge base module, a simulation base module, an inference decision module, a three-dimensional solid modeling module and an engineering drawing module, wherein the user interface module, the knowledge base module and the simulation base module are respectively connected with the inference decision module, the inference decision module is respectively connected with the three-dimensional solid modeling module and the engineering drawing module, and the three-dimensional solid modeling module and the engineering drawing module are respectively connected with the user interface module.
2. The hob type chopper intelligent design system of claim 1, characterized by further comprising an instance library module for providing a chopper three-dimensional model instance, wherein the instance library module is connected with the inference decision module, and the inference decision module establishes a relationship between customized demand parameters and model driving correlation parameters in combination with structural position relationships between components of the knowledge library module and the instance library module.
3. The system of claim 2, wherein the model driven correlation parameters derive design parameters of the hob shredder model according to rules in a knowledge base module.
4. The system of claim 3, wherein the model drive-related parameters include overall parameters including chopping length, feeding speed, drum rotation speed, number of moving blades, productivity, working width and working speed, and key component configuration parameters including moving blade spiral edge helix angle, moving blade edge angle, mounting rake angle, blade edge rake angle, slip angle and stationary blade edge angle.
5. The system for intelligently designing the hob-type chopper as claimed in claim 4, wherein the instance library module comprises a three-dimensional model and an engineering legend of components of the hob-type chopper, the components of the hob-type chopper comprise a movable cutter set, a fixed cutter, a roller, a belt wheel set and a housing, and the movable cutter set comprises a movable cutter, a movable cutter holder and a supporting plate; the roller comprises a roller shaft, a roller pipe shaft and a breadth disc; the belt pulley set comprises a hub and a belt pulley; and automatically adjusting the structure and the size of the part model in the instance library module by the model driving correlation parameters, and automatically generating customized derived parts and then assembling the parts into the hob type chopper.
6. The system for intelligently designing the hob-type chopper as claimed in claim 1, 2, 3, 4 or 5, characterized by further comprising a simulation test module for performing simulation test on the performance of the hob-type chopper and optimizing design parameters according to simulation results, wherein the simulation test module is respectively connected with the inference decision module and the user interface module.
7. An intelligent design method of a hob-type chopper, which is characterized in that the design of the hob-type chopper is carried out by adopting the intelligent design system of the hob-type chopper as claimed in any one of the claims 1 to 6, and comprises the following steps:
s100, inputting parameters through a user interface module;
s200, the inference decision module searches for an applicable rule in the knowledge base module according to the input parameters, deduces model driving correlation parameters and further deduces design parameters;
s300, the simulation library module establishes a simulation model according to the design parameters, optimizes the design parameters, circularly repeats the simulation model establishing process by using the optimized design parameters until the obtained performance index reaches the final optimized parameter of the design index, and optimizes the knowledge library module according to the simulation test result;
s400, the three-dimensional entity modeling module establishes a three-dimensional simulation model of the hob type chopper according to the final optimization parameters; and
and S500, drawing the engineering drawing of the shredder and each part according to the final optimized parameters by an engineering drawing module.
8. The intelligent design method of the hob type chopper, according to claim 7, characterized in that step S300 further comprises performing a simulation performance test, performing a simulation performance test on the simulation model established by the simulation library module, optimizing the design parameters, and repeating the process of establishing the simulation model and the simulation performance test circularly by using the optimized parameters until obtaining the final optimized parameters with performance indexes reaching the design indexes.
9. The intelligent design method of the hob-type chopper, as claimed in claim 7 or 8, wherein in step S400, the three-dimensional solid modeling module establishes a three-dimensional simulation model of the hob-type chopper according to the final optimization parameters and the instance library module, and performs simulation analysis of structural strength, dynamics and discrete medium theory on the three-dimensional simulation model, optimizes design parameters according to the simulation analysis results, and expands the instance library module.
10. The intelligent design method of the hob-type chopper system according to claim 9, wherein in step S500, the engineering drawing module draws the hob-type chopper and the engineering drawings of the parts according to the final optimization parameters and the instance library module, and expands the instance library model.
CN202010495001.3A 2020-06-03 2020-06-03 Intelligent design system and method for hob type chopper Pending CN111651842A (en)

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