28 results about "Line balancing" patented technology

The invention relates to an aircraft pulsation assembly line balancing method considering complex constraints and a medium. The aircraft pulsation assembly line balancing method comprises the following steps that S1, a process priority relation matrix and a process information matrix are established; s2, generating a feasible sequence and a parallel sequence, expressing the feasible sequence and the parallel sequence in a matrix form, and completing a coding process; s3, in combination with a local splitting strategy, splitting the parallel sequence matrix to each station in a balanced manner; s4, performing line-by-line decoding to obtain a feasible balance scheme corresponding to the sequence, and expressing the feasible balance scheme in a matrix form to complete a decoding process; s5, constructing an optimized feasible balance scheme set through an internal and external double-layer genetic algorithm; and S6, using a fuzzy analytic hierarchy process to calculate the final weight of each index which most accords with the current production demand, and according to the weight, using a sorting method approaching an ideal value to decide an optimal feasible balance scheme in the feasible balance scheme set. Compared with the prior art, the method can further improve the efficiency and result of aircraft assembly pulsation line balance optimization.

This application belongs to the technical field of on-line balancing of rotor components of aero-engine core engines, and specifically relates to a drive connection structure for the assembly of rotating and stationary components of an aero-engine core engine, including: a hollow shaft with a plurality of communication grooves thereon; each is distributed circumferentially along the hollow shaft and extends axially along the hollow shaft; a support ring sleeved on the hollow shaft; a plurality of support blocks, one end of which has a support protrusion; each support protrusion correspondingly passes through a communication groove and extends into the hollow shaft; a plurality of support sheets, each support sheet is correspondingly connected between a support block and the support ring; each support protrusion is subjected to a force along the axial direction of the hollow shaft in the hollow shaft, and can drive each support block to contract inwards against the elastic force of the corresponding support sheet. After the force along the axial direction of the hollow shaft is eliminated, each support block can expand outwards under the action of the elastic force of the corresponding support sheet.

The invention discloses an automatic design method for a line balance optimization algorithm driven by a large language model, and belongs to the technical field of mixed flow assembly lines. Establishing a mixed flow assembly line balance optimization mathematical model according to the acquired information and optimization requirements of the mixed flow assembly line; and performing line balance optimization algorithm automatic design on the mixed flow assembly line balance optimization mathematical model through the large language model, including solving the mathematical model through the automatically generated line balance optimization algorithm according to the obtained mixed flow assembly line information to obtain a target function value, and evaluating the performance of the line balance optimization algorithm through the target function value. And performing double evolution according to a feedback evaluation result to obtain a double-evolved line balance optimization algorithm, performing evaluation again, comparing with the line balance optimization algorithm obtained in the previous round, performing iteration continuously until a stop condition is met, and finally obtaining an optimal line balance optimization algorithm. According to the method, automatic design and evaluation can be realized, the optimal solution of the balance optimization problem of the mixed-flow assembly line is obtained, and the design efficiency is improved.

This invention discloses a cross-scenario collaborative optimization method for a two-sided dismantling line for waste household appliances, belonging to the fields of intelligent optimization algorithms and dismantling line balancing. The invention establishes a balanced optimization model for a two-sided dismantling line for waste household appliances, obtains the optimization objective function of minimizing the cycle time and minimizing the total task adjustment amount during the dismantling process, and constructs a multi-objective cross-scenario collaborative evolutionary algorithm to solve it. This significantly improves the allocation efficiency of dismantling tasks under multi-objective optimization and generates an optimized scheduling scheme that can balance cycle time and total task adjustment amount.

The invention discloses a quick-release adjustable reel screen with safety pins and line balance and a mounting method of the quick-release adjustable reel screen, and belongs to the technical field of door and window protection accessories. The reel screen comprises a detachable assembly and a fixed frame, wherein the detachable assembly comprises a pull rod, a screen box surface, an integrated lock, a safety pin and an adjustable mechanism; the fixing frame comprises a yarn box bottom, an upper / lower track and a side edge fixing part, and is provided with a yarn adjusting mechanism, a magnetic strip and a lock seat. The detachable assembly achieves quick disassembly through magnetic attraction positioning and safety pin locking, the yarn adjusting mechanism guarantees the balance of a gauze element lifting yarn, the adjustable mechanism achieves gauze element tension adjustment, and the lockset is matched with a magnetic strip to improve the locking sealing performance. The mounting method comprises the steps of mounting the fixed frame, assembling the detachable assembly, assembling and debugging and replacing the gauze element, and an owner can quickly detach and replace the gauze element by himself / herself. The problems that an existing reel screen is difficult to replace, single in function and insufficient in safety are solved, and the reel screen has convenience and practicability and is suitable for various door and window scenes.

The invention belongs to the field of disassembly production line balance design in the recovery process of waste electrical and electronic products, and particularly relates to a multi-person multi-machine interaction station disassembly line balance design method which comprises the following steps: S1, counting a master station number started by f1; establishing a mixed integer programming model by taking f1, f2, f3, f4, f5, f6, f7, f7, f8, f8, f8, f8, f8 and f8 as targets; s2, collecting disassembly line data and providing constraint conditions of an objective function to form a disassembly balance design model; s3, on the basis of a mixed integer programming model, domination processing is carried out on the solution set, and an optimal disassembly line balance scheme is obtained; the invention aims to provide a multi-person multi-machine interaction site disassembly line balance design method, which takes the minimum number of workstations, the minimum number of operators, the minimum total disassembly time and the minimum idle balance index as optimization targets, establishes an accurate mixed integer programming model and improves the overall disassembly efficiency.

The utility model discloses a box body conveying device. The box body conveying device comprises a clamping and conveying mechanism and a turnover mechanism. The clamping and conveying mechanism comprises two conveying pieces extending in the first direction, the conveying faces of the two conveying pieces are spaced in the second direction to form a conveying channel used for conveying the box bodies, and a through opening is formed in the side, in the third direction, of the conveying channel. The turnover mechanism comprises a first contact piece and a second contact piece which are arranged at an interval in the first direction, the first contact piece and the second contact piece extend into the conveying channel through the through opening edge, and the first contact piece and the second contact piece are used for abutting against the box body to push the box body to turn over; and the first direction, the second direction and the third direction are vertical pairwise. According to the box body conveying device, automatic overturning of the box body can be achieved, the overturning efficiency is improved, and therefore the labor intensity is reduced, and the production line balance is improved.

The utility model discloses a self-adaptive gravity type floating grinding device and belongs to the technical field of grinding equipment. Comprising a translation device, a mounting frame, a grinding assembly, a transmission assembly and a weight balancing assembly, the mounting frame is mounted on the translation device, the grinding assembly and the weight balancing assembly are arranged on the two sides of the mounting frame respectively, and the transmission assembly is mounted on the mounting frame and connected with the grinding assembly and the weight balancing assembly at the same time. According to the self-adaptive gravity type floating grinding device, the balance assembly can balance the weight of the grinding assembly, and when the grinding assembly grinds the top face of the workpiece, due to the fact that the weight of the grinding assembly is balanced, the grinding assembly can conduct real-time self-adaptive adjustment according to the shape of the top of the workpiece; the grinding effect on the workpiece is good, the problem that independent programming is low in efficiency can be solved, and the problem that adjustment lags can be avoided.

Flexible AC transmission system (FACTS) enabling distributed controls is a requirement for power transmission and distribution, to improve line balancing and distribution efficiency. These FACTS devices are electronic circuits that vary in the type of services they provide. All FACTS devices have internal circuitry to handle fault currents. Most of these circuits are unique in design for each manufacturer, which make these FACTS devices non-modular, non-interchangeable, expensive and heavy. One of the most versatile FACTS device is the static synchronous series compensator (SSSC), which is used to inject impedance into the transmission lines to change the power flow characteristics. The addition of integrated fault current handling circuitry makes the SSSC and similar FACTS devices unwieldy, heavy, and not a viable solution for distributed control. What is disclosed are modifications to FACTS devices that move the fault current protection external to the FACTS device and make them modular and re-usable.

The application discloses a kind of detection driven adaptive man-machine cooperation disassembly line balancing method, this method includes: obtaining the disassembly task set of waste product, priority relationship, standard man-hour of each task under different operation mode, and robot resource upper limit;Build two-stage disassembly task model, determine the task before detection node as pre-disassembly mandatory task set, determine the task after detection node and the task of work time affected by part integrity state as time variable task set, the rest is detection normal task set;Establish multi-objective optimization mathematical model, and set constraint condition;For the task in time variable task set, different working condition adjustment coefficient is introduced according to different integrity state, to unify the working position work time under the constraint of each state;Improved multi-objective parrot optimization algorithm is used to solve the mathematical model, and man-machine cooperation disassembly scheme is obtained.The application realizes the adaptive balancing of man-machine cooperation disassembly line by detection driving.

1. The name of the design product: smart scheduling graphical user interface of electronic device. 2. The use of the design product: an electronic device. 3. The design points of the design product: in the graphical user interface. 4. The picture or photo that best indicates the design points: design 1 interface change state diagram 1. 5. The electronic device is a conventional design, and other views from design 1 to design 2 are omitted. 6. Design 1 is designated as the basic design. 7. The use of the graphical user interface: the product interface of design 1-2 is the interactive interface of smart scheduling; it is used to assist clothing factories in scientifically arranging workstations and processes and improving line balancing rate; in the front view interface of design 1-2, after clicking the "workstation arrangement" in the lower left corner of any production single card, design 1-2 interface change state diagram 1 is displayed; in design 1 interface change state diagram 1, after clicking the "AI arrangement" button in the upper right corner, design 1 interface change state diagram 2 is displayed, and the system will automatically match the process for each workstation according to the selected conditions to achieve the best line balancing rate; in design 2 interface change state diagram 1, after clicking the "line balancing chart" in the upper right corner, design 2 interface change state diagram 2 is displayed, which is used to display the "line balancing rate" result; the gray area in the interface is the content picture.

The utility model discloses a roller way bearing fault on-line disposal emergency replacement component, which relates to the technical field of mechanical engineering, and comprises a stabilizing component, a connecting component and a connecting component, the stabilizing assembly and the balancing assembly are arranged, the stabilizing assembly is installed in the inner cavity of the bearing seat, an emergency scheme used for online treatment of the jamming fault of the roller way bearing under the condition that the production rhythm is accelerated is provided, the fault shutdown time of a rolling line can be greatly shortened, and it is guaranteed that rolling line production is conducted stably. The balancing assembly conveys lubricating grease to the friction contact surfaces of the inner circle, the outer circle and the other side face of the part and the inner walls of the roller neck and the bearing seat, the friction coefficient is effectively reduced, and the abrasion problem is effectively solved. The component can reduce the downtime and the labor intensity of breakdown repair of a bearing of the working roller bed to the greatest extent, quickly recover the rotation of the roller bed, ensure that steel billets are smoothly fed into a roughing mill to be rolled in production, and create favorable conditions for improving the production efficiency of a rolling line.

The invention relates to an additive balancing method for balancing complete tools (50a-b; 50d) and / or tool chucks (14a-b, 14'a-b; 14d, 14'd). In at least one step (10a-d), an at least partially liquid balancing mass (16a-d) and / or a balancing mass in the form of a plastically deformable modelling mass is automatically introduced into one or more recesses (18a-d, 18'a-d) of the complete tool (50a-b; 50d) and / or of the tool chuck (14a-b, 14'a-b; 14d, 14'd) or a balancing ring (28c, 28'c) which can be connected to the complete tool (50a-b; 50d) and / or the tool chuck (14a-b, 14'a-b; 14d, 14'd), said recesses being provided specially for the balancing mass, and in at least one other step (20a-d), the introduced balancing mass (16a-d) is cured and / or solidified in the recess(es) (18a-d, 18'a-d).

The utility model relates to the technical field of crankshaft, specifically is a kind of crankshaft dynamic balance on-line detection device, including machine base, support plate A, support plate B and crankshaft body, the both sides of machine base top are equipped with support plate A and support plate B respectively, support plate A side is equipped with connecting column A and connecting column B respectively, connecting column B top penetrates tightening bolt, the top and bottom of connecting column A and connecting column B are respectively fixed laser lamp by bolt in support plate A side corresponding connecting column A and connecting column B;The bottom of support plate B is equipped with mounting plate on both sides, and long bolt is penetrated in the top of mounting plate through reservation mouth. After the distance between support plate A and support plate B is slid along guide rail, long bolt is rotated downwards to fix close to the bottom of guide rail, then the crankshaft body of different lengths is bolted between support plate A and support plate B, and the motor is started to drive the rotation of crankshaft body, so that balance detection is facilitated.

A double-layer optimization system for mixed-flow assembly line balancing and sequencing considering human risk belongs to the technical field of mixed-flow assembly line optimization. Information data of all work tasks in the mixed-flow assembly line is obtained; a double-layer optimization mathematical model is established; the double-layer optimization mathematical model of the mixed-flow assembly line is established according to the production rhythm and constraint conditions of the assembly line and the information data; the upper-layer optimization model is a line balancing model, which aims to minimize the production line cost under the conditions of meeting the priority relationship between tasks and human risk constraints; the lower-layer optimization model is a product launch sequencing model, which aims to minimize the required number of common workers and the maximum number of assembly workstations experiencing work overload in all periods; the double-layer optimization model is optimized and solved by a double-layer optimization algorithm, and the optimal line balancing scheme and launch sequencing scheme are output. The optimization method and system are more likely to obtain a global optimal solution, and have higher optimization efficiency and stability.

The invention relates to a mixed production ratio dynamic change beat type mixed line production line increment line balancing method, and belongs to the technical field of line balancing. According to the method, under the support of a process template and a process database based on BOM, a set of all product types including product types produced on all production lines (the number of products of each product type is 1) and a special product type process set corresponding to each product type are established. The line balance calculation is performed on the basis of all product type sets. And all procedures of each product type in the all product type set are distributed to all stations needed for producing the product type in a production line, and it is guaranteed that each station obtains the maximum possible load rate under the given beat. And when incremental line balance calculation is carried out on all the product types in the all product type set one by one, only the newly added process in the product type needs to be calculated for each new product type. And the production efficiency and the flexibility of the beat type mixed production line are greatly improved.

The present invention relates to a method for optimizing the layout of a production line based on the line balance rate, belonging to the field of engineering assembly. On the basis of the process flow, the present invention disassembles all operations into the smallest work steps and constructs a binary tree model; structurally analyzes the work step man-hour library; operations that are adjacent work steps but cross different types of work cannot be merged, and operations that violate the operation sequence or cross work steps cannot be merged; traverses the binary tree model to query each combination relationship and its number of workstations, and uses the mapping relationship between work steps and man-hours to obtain the line balance rate of this combination; compares all combination results to obtain the optimal line balance rate, and then inversely solves the optimal tact time, the optimal workstations and their corresponding combination relationships; the maximum value of the line balance rate is the optimal target scheme. The present invention can reasonably arrange assembly, inspection, testing and other links on the same production line with the optimal tact time and the optimal number of workstations, realizing a cross-type work cooperation and flexible production line layout design.

This invention discloses a human-machine collaborative method for balancing locally destructive dismantling lines. The method includes: dividing decommissioned electromechanical products into dismantling tasks; determining the dismantling priority relationship between tasks, as well as the dismantling profit, dismantling direction, selectable operators, and selectable dismantling modes for each task; determining the dismantling time and cost for each task by different operators under different dismantling modes; establishing a bilateral human-machine collaborative dismantling line model for locally destructive dismantling guided by workstations, smoothing indicators, robot numbers, and profit, and converting it into a mixed-integer linear programming model, while setting dismantling constraints; constructing an encoding / decoding strategy based on the dismantling constraints, and solving it using an improved multi-objective artificial bee colony algorithm based on reinforcement learning to obtain the dismantling scheme. This invention can obtain a dismantling line balancing scheme with superior overall performance in a short time, significantly improving dismantling efficiency and economic benefits, while reducing energy consumption and environmental impact.

A multi-objective parallel bilateral disassembly line balance optimization method based on constraint programming, which relates to the technical field of disassembly line balance optimization, comprises the following steps: obtaining the original data of the disassembly line according to the characteristics of the types of waste products and the disassembly process, and establishing an original database; constructing a constraint programming model for the multi-objective parallel bilateral disassembly line problem, wherein the objective function includes weighted line length, idle balance index, hazard demand index and disassembly line energy consumption cost, and the constraint conditions include takt time constraint, task priority relationship constraint, task area constraint and workstation opening constraint; inputting waste product information according to database data, and solving the constraint programming model according to the dictionary optimization method to obtain non-inferior disassembly solutions on multiple Pareto frontiers. The present invention can effectively help remanufacturing and recycling enterprises to formulate reasonable and efficient disassembly line production plans, reduce enterprise equipment costs, and improve the safety and efficiency of disassembly operations.

Flexible AC transmission system (FACTS) enabling distributed controls is a requirement for power transmission and distribution, to improve line balancing and distribution efficiency. These FACTS devices are electronic circuits that vary in the type of services they provide. All FACTS devices have internal circuitry to handle fault currents. Most of these circuits are unique in design for each manufacturer, which make these FACTS devices non-modular, non-interchangeable, expensive and heavy. One of the most versatile FACTS device is the static synchronous series compensator (SSSC), which is used to inject impedance into the transmission lines to change the power flow characteristics. The addition of integrated fault current handling circuitry makes the SSSC and similar FACTS devices unwieldy, heavy, and not a viable solution for distributed control. What is disclosed are modifications to FACTS devices that move the fault current protection external to the FACTS device and make them modular and re-usable.

The invention provides a process installation management method and device, equipment and a storage medium. The process installation management method comprises the steps of obtaining process information and user information; obtaining a serial number of a target machine and order material information associated with the serial number; querying man-hour information corresponding to the order material information based on the order material information; distributing to-be-assembled materials in the order material information to a target process based on the man-hour information, the process information and the user information; obtaining a material code corresponding to the target material; receiving an order process list sent by the digital process system; and generating installation prompt information based on the order process list and the material code. According to the embodiment of the invention, automatic distribution and line balance adjustment are realized among the processes of the assembly line, and the defect that the line balance is achieved by manual judgment and adjustment of the work among the processes in the prior art is overcome.

This invention discloses a multi-objective three-parallel dismantling line balancing optimization method, device, and electronic equipment. The method includes the following steps: Step S1: Collect raw data of the dismantling line to form a database, and establish a mathematical model with the objectives of minimizing the number of active workstations, minimizing the idle balance index, and minimizing the energy consumption index; Step S2: Train a policy network and a value network using DPG, and save the trained policy network; Step S3: Receive the input information of the currently dismantled waste products and calculate the cycle time; Step S4: Input the relevant information of the currently dismantled waste products received in Step S3 into the policy network obtained in Step S2, and obtain the output A of the policy network; Step S5: Decode the output A of the policy network obtained in Step S4 to obtain the corresponding dismantling scheme. This invention solves the problem of process allocation and optimization of a three-parallel dismantling line under changing market demand conditions.

The invention provides a multi-product multi-robot local damage disassembly line balancing method under a fixed workstation, and belongs to the technical field of industrial automation and robots. The method comprises the following steps: collecting basic data of a product line and a disassembly task; establishing a mixed integer linear programming model of the multi-product multi-robot local damage disassembly line balance problem with minimum beat time, total disassembly energy consumption, an energy consumption peak value and disassembly profit as optimization objectives; and solving the mixed integer linear programming model. The method aims to improve the working efficiency of the disassembly line and the overall performance of the system in the multi-product and multi-robot environment by considering the problems of assembly non-disassembly, resource limitation, robot models and the like in the actual disassembly process through reasonable task allocation and scheduling strategies. The method can be widely applied to the fields of automobile disassembly, electronic waste recovery, remanufacturing and the like.

This invention discloses a processing method suitable for the housing of electronic control boxes in new energy vehicles. The original two processes are broken down into four, with a scientific and rational allocation of processing content, resulting in a more balanced processing cycle. The cycle time of the bottleneck process is reduced by 45% compared to traditional solutions, and the overall line balance rate is increased from 80.3% to 96.6%. This invention reduces data instability caused by deformation of the blank surface and side positioning reference surface, using stable machined holes and surfaces for positioning processing, improving the stability of key dimensional data by 80%.

The invention relates to a large-caliber low-magnetic-resistance-moment on-line balance structure which comprises an assembling and disassembling mechanism, a stator, a rotor and a shafting supporting mechanism, the assembling and disassembling mechanism is installed on the stator, and the rotor is connected with the shafting supporting mechanism through a rotor connecting base after the stator is embedded in the rotor; the stator comprises a stator iron core assembly, a stator shell and a stator fixing frame, the stator iron core assembly comprises a stator magnetic conducting ring and an iron core positioning block, the stator magnetic conducting ring provided with the iron core positioning block is clamped in the stator shell, and the stator shell is clamped on the stator fixing frame; the stator housing and the stator fixing frame are respectively provided with a stator housing processing gap and a stator fixing frame processing gap which are used for adjusting the stator magnetic conductive ring. The balance structure adjusts the stator magnetic conductive ring through a stator shell processing gap and a stator fixing frame processing gap, so that the magnetic resistance moment reaches a uniform condition in a 360-degree circumferential range. According to the balancing method, effective control over the magnetic resistance torque is achieved, generation of torque pulsation and noise is restrained, and therefore the overall performance and the survival rate of the motor are improved.

This invention provides a dynamic dismantling line balancing method based on support vector regression and Gaussian inverse model, comprising the following steps: obtaining the Pareto optimal solution set and corresponding target value set for all historical environments of the dismantling line; the optimal solution includes the robot-to-workstation assignment vector, the task-to-robot assignment vector, and the task sequence vector; the target values ​​include the workstation cycle time and the number of robots used; training the target value set using support vector regression to predict the target value in the new environment; using the Pareto optimal solution set and the corresponding target value set as training samples to establish a Gaussian inverse model; inputting the target value in the new environment into the inverse model to obtain the initial population in the new environment; performing evolutionary calculations on the generated initial population to output the optimal solution in the new environment. This invention effectively enhances the rapid response capability of the dynamic dismantling line to environmental changes and significantly improves the quality of the solution.

The invention discloses a line balance and buffer area configuration double-layer optimization method based on reinforcement learning, and belongs to the technical field of mixed flow assembly. Establishing a double-layer optimization model, performing balance optimization on the mixed flow assembly line by the upper-layer optimization model, and determining a line balance scheme; the lower-layer optimization model is used for determining a buffer configuration scheme by minimizing the cost of the buffer regulated and controlled by a penalty coefficient on the basis of a given line balance scheme; an assembly line simulator based on discrete event simulation is adopted to carry out simulation evaluation on a solution obtained through optimization; and finally, proposing a double-layer optimization algorithm based on reinforcement learning, and solving the double-layer optimization model to realize good balance between solving quality and computing resource consumption. A complex hybrid model assembly line scene including random disturbance and parallel stations can be processed, and the practicability is enhanced.

The present application discloses a computing system implementing a line balancing tool for generating a structured bill of materials for a wire harness based on a wire harness design and available manufacturing processes. The computing system can decompose the structured bill of materials into tasks and assign the tasks to workstations in a production line configured to manufacture the wire harness. The computing system can determine dependencies between multiple tasks and verify that the tasks assigned to the workstations meet the dependencies between the multiple tasks. The dependencies can indicate the order in which operations associated with the tasks are performed. The computing system can confirm unassigned tasks that can be assigned to one or more workstations, and determine which workstations the unassigned assembly tasks will meet the dependencies between the multiple assembly tasks if they are assigned.