Method and system for checking operation load of hydraulic cylinder of double-hoisting-point radial gate hoist

Abstract

The present application belongs to the technical field of gate hoist machine hydraulic cylinder, and provides a double-lifting-point radial gate hoist machine hydraulic cylinder operation load checking method and system. The method comprises the following steps: according to the dynamic safety opening degree of the gate, the different heights and speeds of the water flow, and the initial model of the double-lifting-point radial gate hoist machine, a dynamic model of the double-lifting-point radial gate hoist machine is constructed, and then the fluid domain and the solid domain are determined and are respectively subjected to grid division; according to the preset boundary conditions of the double-lifting-point radial gate hoist machine and the grid division conditions of the fluid domain and the solid domain, the fluid domain and the solid domain are subjected to coupled analysis and calculation, and an environmental parameter and hoist machine hydraulic cylinder load distribution model is constructed; according to the environmental parameter and hoist machine hydraulic cylinder load distribution model, stress and strain simulation data of each part of the double-lifting-point radial gate hoist machine hydraulic cylinder under different flow rates are obtained, so as to check the stress and strain ranges corresponding to the selection and structure design of different parts of the double-lifting-point radial gate hoist machine hydraulic cylinder.

Description

Technical Field

[0001] The present invention belongs to the technical field of hydraulic cylinders for gate hoists, and in particular relates to a method and system for calibrating the operating load of a hydraulic cylinder for a double-hanging-point radial gate hoist. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] The main body of the double-lifting point radial gate includes a curved panel, a hydraulic hoist, and two arms, which are composed of door leaf welded parts, arm assembly, hinge assembly, water stop assembly, side wheel assembly, etc. The arm and door leaf, and the arm and hinge are connected by bolts. The connection point between the hydraulic cylinder and the gate is located at the top of the gate panel. Figure 1 As shown in the figure, the hydraulic gate hoist is a new type of gate opening and closing mechanism that integrates mechanical, electrical, hydraulic, and instrumentation functions. Its main moving element is a hydraulic cylinder. Its operating principle is that a drive motor is used as the power source, driving a bidirectional hydraulic pump to output pressurized oil. This is driven by components such as the hydraulic oil circuit manifold, and the telescopic movement of the hydraulic cylinder controls the opening and closing of the radial gate. The safety and reliability of the gate hoist's hydraulic cylinder are crucial to the proper operation of the entire water conservancy project.

[0004] At present, the problems of hydraulic hoists' hydraulic systems failing to build pressure, jittering during movement, and piston rod creeping can be solved by strictly controlling the production, manufacturing, and debugging of the hydraulic system and hydraulic cylinder. However, due to the variable load environment and complex influencing factors of the hydraulic hoist, its asynchronous operation problem cannot be solved through structural regulation. In the existing calibration of double-lifting-point radial gates, there is a problem of insufficient consideration of the calibration scheme for the hydraulic cylinder of the gate hoist. Traditional gate calibration schemes usually only focus on evaluating the bearing capacity of the gate body, but often ignore the possible asynchronous operation problems of the hydraulic cylinder of the gate hoist under working conditions with complex hydrological conditions, which may cause gate operation failures. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a method and system for calibrating the operating load of the hydraulic cylinder of a double-hanging-point radial gate hoist. Based on the water flow movement and sediment distribution laws of the gate under harsh environments, the method sets parameters such as water level, flow velocity, gate deadweight, and friction. The fluid-solid coupling module of finite element simulation is used to analyze the load distribution state on the hydraulic cylinder of the hoist under harsh environments, and an environmental parameter-hoist hydraulic cylinder load distribution model is constructed to provide a basis for setting the gate synchronous start-up parameters.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A first aspect of the present invention provides a method for calibrating the operating load of a hydraulic cylinder of a double-hanging-point radial gate hoist.

[0008] In one or more embodiments, a method for verifying the operating load of a hydraulic cylinder of a double-hanging-point radial gate hoist is provided, comprising:

[0009] According to the dynamic safety opening of the gate, different heights and speeds of water flow, and combined with the initial model of the double-lifting-point radial gate hoist, a dynamic model of the double-lifting-point radial gate hoist is constructed;

[0010] Based on the dynamic model of the double-lifting-point radial gate hoist, the fluid domain and solid domain are determined and meshed separately.

[0011] Based on the preset boundary conditions of the double-lifting-point radial gate hoist and the meshing of the fluid and solid domains, a coupling analysis and calculation of the fluid and solid domains was performed to construct a model of environmental parameters and the load distribution of the hoist's hydraulic cylinder.

[0012] Based on the environmental parameters and the load distribution model of the hydraulic cylinder of the double-hanging-point radial gate hoist, the stress and strain simulation data of each part of the hydraulic cylinder of the double-hanging-point radial gate hoist at different flow rates are obtained to verify the stress and strain range corresponding to the selection and structural design of different parts of the hydraulic cylinder of the double-hanging-point radial gate hoist.

[0013] As an implementation method, the construction process of the initial model of the double-hanging-point radial gate hoist is as follows:

[0014] According to the design drawings of the double-lifting-point radial gate hoist, obtain the gate panel data, gate beam structure data, and gate arm and hydraulic cylinder data;

[0015] Based on the gate panel data, gate beam structure data, gate arm and hydraulic cylinder data, an initial model of the double-hanging-point radial gate hoist was established, which can characterize the constraints between the various parts of the radial gate.

[0016] As an implementation method, the grid height of the fluid domain is the water level data, the grid width is the width of the hydraulic cylinder of the double-hanging-point radial gate hoist, and the grid length is the sum of the length of the hydraulic cylinder of the double-hanging-point radial gate hoist and the length of the water area.

[0017] As an implementation method, in the fluid domain, materials are set, the fluid inlet, outlet and fluid-solid coupling surface boundaries are determined, surface expansion is set, and the fluid domain is meshed.

[0018] As an implementation method, in the solid domain, the material elastic modulus and Poisson's ratio of the structural steel and concrete matrix are set, fixed supports are set for the hydraulic cylinder fixed bearings, radial gate panel bearings and concrete matrix, and the surface corresponding to the fluid-solid coupling surface and all solid surfaces are selected in the fluid-solid interface to perform surface expansion settings and perform meshing.

[0019] A second aspect of the present invention provides a double-hanging-point radial gate hoist hydraulic cylinder operating load verification system.

[0020] In one or more embodiments, a double-lifting-point radial gate hoist hydraulic cylinder operation load verification system includes:

[0021] The dynamic model construction module is used to construct a dynamic model of the double-lifting-point radial gate hoist based on the dynamic safety opening of the gate, different water flow heights and speeds, and the initial model of the double-lifting-point radial gate hoist;

[0022] The fluid-solid meshing module is used to determine the fluid and solid domains based on the dynamic model of the double-hanging-point radial gate hoist and mesh them separately;

[0023] The fluid-solid coupling analysis module is used to perform coupling analysis and calculations on the fluid and solid domains based on the preset boundary conditions of the double-hanging-point radial gate hoist and the meshing of the fluid and solid domains, thereby constructing a model of environmental parameters and the load distribution of the hoist's hydraulic cylinder.

[0024] The load distribution verification module is used to obtain the stress and strain simulation data of each part of the double-hanging-point radial gate hoist hydraulic cylinder at different flow rates based on environmental parameters and the load distribution model of the hydraulic cylinder of the double-hanging-point radial gate hoist, so as to verify the stress and strain range corresponding to the selection and structural design of different parts of the hydraulic cylinder of the double-hanging-point radial gate hoist.

[0025] As an implementation method, in the dynamic model construction module, the construction process of the initial model of the double-hanging-point radial gate hoist is as follows:

[0026] According to the design drawings of the double-lifting-point radial gate hoist, obtain the gate panel data, gate beam structure data, and gate arm and hydraulic cylinder data;

[0027] Based on the gate panel data, gate beam structure data, gate arm and hydraulic cylinder data, an initial model of the double-hanging-point radial gate hoist was established, which can characterize the constraints between the various parts of the radial gate.

[0028] As an implementation method, in the fluid-solid grid division module, the grid height of the fluid domain is the water level data, the grid width is the width of the hydraulic cylinder of the double-hanging-point radial gate hoist, and the grid length is the sum of the length of the hydraulic cylinder of the double-hanging-point radial gate hoist and the length of the water area.

[0029] A third aspect of the present invention provides a computer-readable storage medium.

[0030] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of the above-mentioned method for calibrating the operating load of the hydraulic cylinder of a double-hanging-point radial gate hoist.

[0031] A fourth aspect of the present invention provides an electronic device.

[0032] An electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the steps in the above-described method for calibrating the operating load of the hydraulic cylinder of a double-hanging-point radial gate hoist are implemented.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] (1) The present invention constructs a dynamic model of a double-hanging-point radial gate hoist, determines the fluid domain and the solid domain and performs mesh division on them respectively, and then adopts a fluid-solid coupling analysis method to perform a finite element coupling analysis on the fluid domain and the solid domain, thereby achieving an accurate calculation of the interaction force between the fluid and the solid structure. This can more accurately simulate the operating state of the hydraulic cylinder of the radial gate hoist under actual working conditions, thereby improving the accuracy of the analysis.

[0035] (2) The present invention fully considers the influence of different working conditions such as gate opening (gate door panel lifting height), inlet water level, water speed and gate panel metal material, constructs the environmental parameters and the load distribution model of the hydraulic cylinder of the gate hoist, and obtains the stress and strain simulation data of each part of the hydraulic cylinder of the double-hanging point arc gate hoist under different flow rates, providing more reliable reference data for safety assessment and solving the synchronous control problem of the hydraulic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0037] Figure 1 2. It is a schematic structural diagram of a double-hanging-point radial gate hoist according to an embodiment of the present invention;

[0038] Figure 2 It is a simulation model of a radial gate hydraulic hoist according to an embodiment of the present invention;

[0039] Figure 3 1. It is a flow chart of a method for verifying the operating load of a hydraulic cylinder of a double-hanging-point radial gate hoist according to an embodiment of the present invention;

[0040] Figure 4 This is a simulation flow chart of a method for verifying the operating load of a hydraulic cylinder of a double-hanging-point radial gate hoist according to an embodiment of the present invention;

[0041] Figure 5 1. It is a connection principle diagram of a simulation model of a method for verifying the operating load of a hydraulic cylinder of a double-hanging-point radial gate hoist according to an embodiment of the present invention;

[0042] Figure 6 It is the deformation curve of the hydraulic cylinder of the lifting point radial gate hoist under different water flow velocities;

[0043] Figure 7 It is the strain curve of the hydraulic cylinder of the lifting point radial gate hoist at different water flow velocities;

[0044] Figure 8 It is the stress curve of the hydraulic cylinder of the lifting point radial gate hoist at different water flow velocities;

[0045] Figure 9 The simulation results of the strain of the hydraulic cylinder of the lifting point radial gate hoist under different water flow velocities are shown;

[0046] Figure 10 The stress simulation results of the hydraulic cylinder of the lifting point radial gate hoist at different water flow velocities are shown;

[0047] Figure 11 is the stress variation trend during the 5s simulation process;

[0048] Figure 12 It is a structural schematic diagram of the hydraulic cylinder operation load verification system of the double-hanging-point radial gate hoist according to an embodiment of the present invention. DETAILED DESCRIPTION

[0049] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0050] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0051] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0052] Combine Figure 3 and Figure 4The method for verifying the operating load of the hydraulic cylinder of the double-hanging-point radial gate hoist in this embodiment may include:

[0053] S100, based on the dynamic safety opening of the gate, different heights and speeds of water flow, combined with the initial model of the double-hanging-point radial gate hoist, constructs a dynamic model of the double-hanging-point radial gate hoist.

[0054] S200, based on the dynamic model of the double-lifting-point radial gate hoist, determines the fluid domain and solid domain and meshes them separately.

[0055] S300, based on the preset boundary conditions of the double-lifting-point radial gate hoist and the meshing of the fluid and solid domains, performs coupled analysis and calculations on the fluid and solid domains, and constructs a model of environmental parameters and the load distribution of the hoist's hydraulic cylinder.

[0056] S400, based on environmental parameters and the load distribution model of the hydraulic cylinder of the double-point radial gate hoist, obtains stress and strain simulation data of each component of the hydraulic cylinder of the double-point radial gate hoist at different flow rates to verify the stress and strain range corresponding to the selection and structural design of different components of the hydraulic cylinder of the double-point radial gate hoist.

[0057] In some specific implementation processes, the System Coupling module used in Ansys Workbench belongs to the fluid-solid coupling method. The solver is used to perform time domain integration on the fluid domain and the solid, and then data exchange is performed to keep the grid nodes of the fluid part and the solid structure part coincident. The data transmission needs to be completed through the grid nodes.

[0058] The invention also fully considers different working conditions such as gate opening, inlet water level, water velocity and metal material of the gate panel, and provides two schemes for simulating the hydraulic cylinder of the gate hoist when the two hydraulic cylinders are unevenly loaded: modifying the velocity direction of the fluid simulation inlet to simulate the influence of water flow in a random direction or applying different damping on both sides of the gate panel of the transient structure to simulate the influence of silt deposition in the gate slide, providing important reference data for the calibration of the hydraulic cylinder of the gate hoist.

[0059] In the specific implementation process of step S100, the construction process of the initial model of the double-hanging-point radial gate hoist is as follows:

[0060] According to the design drawings of the double-lifting point radial gate hoist, Figure 1 As shown, the gate panel data, gate beam grid structure data, and gate support arm and hydraulic cylinder data are obtained;

[0061] Based on the gate panel data, gate beam structure data, gate arm and hydraulic cylinder data, an initial model of the double-hanging-point radial gate hoist was established, which can characterize the constraints between the various parts of the radial gate.

[0062] According to the dynamic safety opening of the gate, different heights and speeds of water flow, the initial model was modified to obtain several groups of models with gate openings distributed between 1 and 3 meters, namely the dynamic models of the double-hanging-point radial gate hoist that need to be simulated.

[0063] according to Figure 2 The dynamic model of the double-hanging-point radial gate hoist includes the simulation fluid domain 1, the water-facing concrete wall 2, the hydraulic cylinder 3, the radial gate 4, the gate support shaft 5 and the water flow bottom concrete wall 6.

[0064] Specifically, the process of establishing the dynamic model of the double-lifting-point radial gate hoist includes:

[0065] Firstly, a gate panel simulation model is established to characterize the gate curved panel.

[0066] At the same time, a gate arm simulation model is established to characterize the gate arm; contact constraints are applied to the gate arm simulation model and the gate leaf simulation model to form a gate body simulation model;

[0067] Secondly, a simulation model for representing the hydraulic cylinder of the gate hoist is established; contact constraints are applied to the gate panel simulation model and the hydraulic cylinder simulation model to form a simulation model of the gate hoist hydraulic cylinder;

[0068] Finally, a liquid-water-filled space at the inlet is created to represent the fluid portion.

[0069] In step S200, based on the water level data, the model is imported into the Geometry model module to construct the fluid and solid areas; wherein, the grid height of the fluid domain is the water level data, the grid width is the width of the hydraulic cylinder of the double-hanging-point radial gate hoist, and the grid length is the sum of the length of the hydraulic cylinder of the double-hanging-point radial gate hoist and the length of the water area.

[0070] In the fluid domain, set the material, determine the fluid inlet, outlet and fluid-solid coupling surface boundaries, set surface expansion, and mesh the fluid domain.

[0071] Specifically, according to the water flow velocity and Geometry model in the working area of ​​the hydraulic cylinder of the gate hoist, the material is set in the FluidFlow fluid part mesh division and related parameter setting module, the boundaries such as the fluid inlet (inlet), outlet (outlet), fluid-solid coupling surface (fsi-fluid) are named, the surface expansion is set, and the fluid domain is meshed.

[0072] For example, set the fluid material to water-liquid and the Y-axis gravity to -9.8m / s 2, select transient calculation method and PISO calculation scheme, set different fluid inlet velocity distributions in 1-5m, outlet water pressure 0Mpa and suppress backflow.

[0073] In the solid domain, the material elastic modulus and Poisson's ratio of the structural steel and concrete matrix are set. Fixed supports are set for the hydraulic cylinder fixed bearings, radial gate panel bearings, and concrete matrix. In the fluid-solid interface, the surface corresponding to the fluid-solid coupling surface and all solid surfaces are selected for surface expansion and meshing.

[0074] Specifically, according to the Geometry model, in the Transient Structural solid part meshing and related parameter setting module, the material elastic modulus and Poisson's ratio of the structural steel and concrete matrix are set, and fixed supports are set for the hydraulic cylinder fixed bearings, radial gate panel bearings, and concrete matrix. In the fluid-solid interface, the surface corresponding to fsi-fluid is selected, and surface expansion is set for all solid surfaces and meshing is performed.

[0075] For example, set the density, Young's modulus, and Poisson's ratio of the structural steel material to 7895 kg / m 3 , 2×10 11 Pa and 0.3; set the density, Young's modulus and Poisson's ratio of the concrete material to 2600 kg / m 3 , 3×10 9 Pa and 0.2; keep the unit length of fluid and transient structure grid divisions the same as 0.25m.

[0076] In step S300 , the solver, turbulence model, algorithm selection, boundary conditions and time step are also preset.

[0077] Specifically, the pressure-based solver is selected according to the water conditions and applicable scope, and the SST k-ω model of the turbulence model is selected as the turbulence model;

[0078] Set the liquid material in the Fluent material library; set the materials for the concrete and structural steel parts in the Engineering Data library in Transient Structural;

[0079] According to the water conditions, the inlet velocity, the turbulence intensity I (Turbulent Intensity) and the turbulent viscosity ratio μ t / μ, (Turbulent viscosity Ratio); and start grid setting for fluid-solid coupling surface;

[0080] In the Solution Method module of Fluent, select the PISO (Pressure-Implicit with Splitting of Operators) algorithm, which provides a higher degree of approximation for the relationship between pressure and velocity corrections. Keep the adjacent correction coefficient and the skew correction coefficient at the default value of 1.

[0081] According to the settings of the Fluid Module and the Transient Module, set the solution scheme in the System Coupling Module and the Results Module, and set the time step, data transmission, solution order, and data storage;

[0082] For example, set the calculation time to 5s, the step size to 0.01 / 0.02s, the minimum number of iterations to 1, and the maximum number of iterations to 5; set the data transmission to fluid flow to transient structure.

[0083] In step S400, the simulation analysis results are analyzed and reliability verification is performed, and the specific process is as follows:

[0084] Select the required solution in the Transient Structural transient processing module to create the total deformation and equivalent stress that need to be calculated;

[0085] After the solution update is completed, the stress and strain range of each part of the double-point hoist hydraulic cylinder is recorded, and the stress and strain variation patterns under different simulation conditions are statistically analyzed;

[0086] Compare the stress and strain simulation data patterns obtained under various environmental parameter combinations with the theoretical calculated values ​​to verify the reliability of the simulation;

[0087] The obtained data is statistically analyzed and an environmental parameter-slot machine hydraulic cylinder load distribution model is established to optimize the parts selection and structural design of the slot machine hydraulic cylinder, providing a basis for the setting of gate synchronous starting parameters.

[0088] Combine Figure 5 The simulation results of hydraulic cylinder stress and strain are as follows: Figures 6-11 As shown, the instantaneous maximum strain is 0.2%, the average strain is less than 0.1%, and the maximum equivalent stress is about 200 MPa, which is much smaller than the upper limit of the bearing capacity of the hydraulic cylinder, that is, the hydraulic hoist can operate normally and smoothly.

[0089] Depend on Figure 11The maximum instantaneous stress on the hydraulic cylinder of the gate hoist model during simulation is greater than the stress experienced after stabilization. Simulation design of the h1_v5 group, which has the highest theoretical load, revealed that the maximum instantaneous equivalent stress during startup can reach 280 MPa, which is still less than the stress limit of the Q355C steel used for the hydraulic gate hoist.

[0090] However, if the hydraulic gate hoist is to be used in more severe water conditions, the weak parts of the hydraulic cylinder need to be strengthened according to the load distribution of the simulation results. Materials with stronger rigidity can be used to improve the deformation of the hydraulic cylinder under stress, reduce the impact of the hydraulic cylinder deformation on the sealing system, improve the strength of the hydraulic cylinder and its ability to bear lateral forces, solve the problems of shaking and creeping that may occur in the hydraulic cylinder of the hydraulic gate hoist during movement, and improve the stability and reliability of the hydraulic gate hoist operation.

[0091] Figure 12 This is a schematic diagram of the load calibration system structure of the hydraulic cylinder of the double-hanging-point radial gate hoist according to an embodiment of the present invention. Figure 12 As shown, a double-hanging-point radial gate hoist hydraulic cylinder operation load verification system is provided, comprising:

[0092] Dynamic model building module 1201, which is used to build a dynamic model of the double-hanging-point radial gate hoist based on the dynamic safety opening of the gate, different heights and speeds of the water flow, and the initial model of the double-hanging-point radial gate hoist;

[0093] A fluid-solid meshing module 1202 is used to determine the fluid domain and the solid domain based on the dynamic model of the double-hanging-point radial gate hoist and mesh them separately;

[0094] The fluid-solid coupling analysis module 1203 is used to perform coupling analysis and calculation on the fluid and solid domains based on the preset boundary conditions of the double-hanging-point radial gate hoist and the meshing of the fluid and solid domains, and to construct a model of environmental parameters and the load distribution of the hoist hydraulic cylinder;

[0095] The load distribution verification module 1204 is used to obtain the stress and strain simulation data of each part of the double-hanging-point radial gate hoist hydraulic cylinder under different flow rates based on environmental parameters and the load distribution model of the hydraulic cylinder of the double-hanging-point radial gate hoist, so as to verify the stress and strain range corresponding to the selection and structural design of different parts of the hydraulic cylinder of the double-hanging-point radial gate hoist.

[0096] In a specific implementation process, in the dynamic model building module 1201, the construction process of the initial model of the double-hanging-point radial gate hoist is as follows:

[0097] According to the design drawings of the double-lifting-point radial gate hoist, obtain the gate panel data, gate beam structure data, and gate arm and hydraulic cylinder data;

[0098] Based on the gate panel data, gate beam structure data, gate arm and hydraulic cylinder data, an initial model of the double-hanging-point radial gate hoist was established, which can characterize the constraints between the various parts of the radial gate.

[0099] In the fluid-solid grid division module 1202, the grid height of the fluid domain is the water level data, the grid width is the width of the hydraulic cylinder of the double-hanging-point radial gate hoist, and the grid length is the sum of the length of the hydraulic cylinder of the double-hanging-point radial gate hoist and the length of the water area.

[0100] It should be noted that the modules in this embodiment are Figure 3 The various steps in the above diagram correspond to each other one by one, and the specific implementation process is the same, so it will not be described in detail here.

[0101] The present invention aims at the specific working characteristics of the hydraulic cylinder of the double-hanging-point radial gate hoist, constructs a finite element model of the interaction between the fluid and the hydraulic cylinder, uses fluid-solid coupling technology to accurately calculate the interaction force between the fluid and the solid, and fully considers the influence of complex hydrological conditions on the uneven load of the hydraulic cylinder of the hoist. It can effectively calibrate the load of the hydraulic cylinder and construct an environmental parameter-hoist hydraulic cylinder load distribution model, providing more reliable reference data for safety assessment and solving the synchronous control problem of the hydraulic cylinder.

[0102] In one or more embodiments, a schematic diagram of an electronic device is provided. The electronic device includes a central processing unit (CPU), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) or a program loaded from a storage portion into a random access memory (RAM). Various programs and data required for system operation are also stored in the RAM. The central processing unit, ROM, and RAM are connected to each other via a bus. An input / output (I / O) interface is also connected to the bus.

[0103] The following components are connected to the I / O interface: an input section including a keyboard, mouse, etc.; an output section including a cathode ray tube (CRT), liquid crystal display (LCD), and speakers; a storage section including a hard disk; and a communication section including a network interface card such as a local area network (LAN) card and a modem. The communication section performs communication processing via a network such as the Internet. A drive is also connected to the I / O interface as needed. Removable media such as magnetic disks, optical disks, magneto-optical disks, semiconductor memories, etc. are installed in the drive as needed, so that computer programs read from them can be installed in the storage section as needed.

[0104] When the central processing unit in the electronic device of this embodiment executes the program, the following is achieved: Figure 3 The steps in the method for verifying the operating load of the hydraulic cylinder of the double-lifting-point radial gate hoist are shown.

[0105] In particular, according to an embodiment of the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present application includes a computer program product, which includes a computer program carried on a computer readable medium, the computer program including a computer program for executing Figure 3 In such an embodiment, the computer program can be downloaded and installed from a network via the communication portion and / or installed from a removable medium. When the computer program is executed by the central processing unit, the various functions defined in the apparatus of the present application are performed.

[0106] in, Figure 3 The computer program instructions corresponding to the method shown can also be stored in a computer readable memory that can guide a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0107] Those skilled in the art will appreciate that all or part of the processes in the above-described method embodiments can be implemented by instructing related hardware through a computer program. The program can be stored in a computer-readable storage medium, and when executed, the program can include the processes in the above-described method embodiments. The storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

[0108] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A method for checking the operating load of a hydraulic cylinder of a double-hanging-point radial gate hoist, characterized in that: include: According to the dynamic safety opening of the gate, different heights and speeds of water flow, and combined with the initial model of the double-lifting-point radial gate hoist, a dynamic model of the double-lifting-point radial gate hoist is constructed; Based on the dynamic model of the double-lifting-point radial gate hoist, the fluid domain and solid domain are determined and meshed separately. Based on the preset boundary conditions of the double-lifting-point radial gate hoist and the meshing of the fluid and solid domains, a coupling analysis and calculation of the fluid and solid domains was performed to construct a model of environmental parameters and the load distribution of the hoist's hydraulic cylinder. Based on environmental parameters and the load distribution model of the hydraulic cylinder of the double-lifting-point radial gate hoist, the stress and strain simulation data of each component of the hydraulic cylinder of the double-lifting-point radial gate hoist at different flow rates were obtained to verify the stress and strain range corresponding to the selection and structural design of different components of the hydraulic cylinder of the double-lifting-point radial gate hoist; Considering the gate opening, inlet water level, water velocity, and gate plate metal material, two simulation methods are provided for the hydraulic cylinder of the gate hoist under the condition of uneven load on the two hydraulic cylinders: modifying the velocity direction of the fluid simulation inlet to simulate the influence of random water flow, or applying different damping on both sides of the gate plate in the transient structure to simulate the influence of sediment accumulation in the gate chute. The dynamic model of the double-lifting-point radial gate hoist includes the simulated fluid domain, the concrete wall on the water-facing surface, the hydraulic cylinder, the radial gate, the gate support shaft, and the concrete wall at the bottom of the water flow. The process of establishing the dynamic model of the double-lifting-point radial gate hoist includes: Firstly, a gate panel simulation model is established to characterize the gate curved panel. At the same time, a gate arm simulation model is established to characterize the gate arm; contact constraints are applied to the gate arm simulation model and the gate leaf simulation model to form a gate body simulation model; Secondly, a simulation model for representing the hydraulic cylinder of the gate hoist is established; contact constraints are applied to the gate panel simulation model and the hydraulic cylinder simulation model to form a simulation model of the gate hoist hydraulic cylinder; Finally, a liquid-water-filled space at the inlet is created to represent the fluid portion.

2. The method for verifying the operating load of the hydraulic cylinder of the double-hanging-point radial gate hoist according to claim 1 is characterized in that: The construction process of the initial model of the double-lifting-point radial gate hoist is as follows: According to the design drawings of the double-lifting-point radial gate hoist, obtain the gate panel data, gate beam structure data, and gate arm and hydraulic cylinder data; Based on the gate panel data, gate beam structure data, gate arm and hydraulic cylinder data, an initial model of the double-hanging-point radial gate hoist was established, which can characterize the constraints between the various parts of the radial gate.

3. The method for verifying the operating load of the hydraulic cylinder of the double-hanging-point radial gate hoist according to claim 1 is characterized in that: The grid height of the fluid domain is the water level data, the grid width is the width of the hydraulic cylinder of the double-lifting-point radial gate hoist, and the grid length is the sum of the length of the hydraulic cylinder of the double-lifting-point radial gate hoist and the length of the water area.

4. The method for verifying the operating load of the hydraulic cylinder of the double-hanging-point radial gate hoist according to claim 1 is characterized in that: In the fluid domain, set the material, determine the fluid inlet, outlet and fluid-solid coupling surface boundaries, set surface expansion, and mesh the fluid domain.

5. The method for verifying the operating load of the hydraulic cylinder of the double-hanging-point radial gate hoist according to claim 1 is characterized in that: In the solid domain, the material elastic modulus and Poisson's ratio of the structural steel and concrete matrix are set. Fixed supports are set for the hydraulic cylinder fixed bearings, radial gate panel bearings, and concrete matrix. In the fluid-solid interface, the surface corresponding to the fluid-solid coupling surface and all solid surfaces are selected for surface expansion and meshing.

6. A double-lifting-point radial gate hoist hydraulic cylinder operation load verification system, characterized in that: include: The dynamic model construction module is used to construct a dynamic model of the double-lifting-point radial gate hoist based on the dynamic safety opening of the gate, different water flow heights and speeds, and the initial model of the double-lifting-point radial gate hoist; The fluid-solid meshing module is used to determine the fluid and solid domains based on the dynamic model of the double-hanging-point radial gate hoist and mesh them separately; The fluid-solid coupling analysis module is used to perform coupling analysis and calculations on the fluid and solid domains based on the preset boundary conditions of the double-hanging-point radial gate hoist and the meshing of the fluid and solid domains, thereby constructing a model of environmental parameters and the load distribution of the hoist's hydraulic cylinder. The load distribution verification module is used to obtain stress and strain simulation data of each component of the double-hanging-point radial gate hoist hydraulic cylinder at different flow rates based on environmental parameters and the hoist hydraulic cylinder load distribution model, in order to verify the stress and strain range corresponding to the selection and structural design of different components of the double-hanging-point radial gate hoist hydraulic cylinder; Considering the gate opening, inlet water level, water velocity, and gate plate metal material, two simulation methods are provided for the hydraulic cylinder of the gate hoist under the condition of uneven load on the two hydraulic cylinders: modifying the velocity direction of the fluid simulation inlet to simulate the influence of random water flow, or applying different damping on both sides of the gate plate in the transient structure to simulate the influence of sediment accumulation in the gate chute. The dynamic model of the double-lifting-point radial gate hoist includes the simulated fluid domain, the concrete wall on the water-facing surface, the hydraulic cylinder, the radial gate, the gate support shaft, and the concrete wall at the bottom of the water flow. The process of establishing the dynamic model of the double-lifting-point radial gate hoist includes: Firstly, a gate panel simulation model is established to characterize the gate curved panel. At the same time, a gate arm simulation model is established to characterize the gate arm; contact constraints are applied to the gate arm simulation model and the gate leaf simulation model to form a gate body simulation model; Secondly, a simulation model for representing the hydraulic cylinder of the gate hoist is established; contact constraints are applied to the gate panel simulation model and the hydraulic cylinder simulation model to form a simulation model of the gate hoist hydraulic cylinder; Finally, a liquid-water-filled space at the inlet is created to represent the fluid portion.

7. The double-hanging-point radial gate hoist hydraulic cylinder operation load verification system according to claim 6 is characterized in that: In the dynamic model construction module, the construction process of the initial model of the double-hanging-point radial gate hoist is as follows: According to the design drawings of the double-lifting-point radial gate hoist, obtain the gate panel data, gate beam structure data, and gate arm and hydraulic cylinder data; Based on the gate panel data, gate beam structure data, gate arm and hydraulic cylinder data, an initial model of the double-hanging-point radial gate hoist was established, which can characterize the constraints between the various parts of the radial gate.

8. The double-hanging-point radial gate hoist hydraulic cylinder operation load verification system according to claim 6 is characterized in that: In the fluid-solid grid division module, the grid height of the fluid domain is the water level data, the grid width is the width of the hydraulic cylinder of the double-hanging-point radial gate hoist, and the grid length is the sum of the length of the hydraulic cylinder of the double-hanging-point radial gate hoist and the length of the water area.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method for calibrating the operating load of the hydraulic cylinder of the double-hanging-point radial gate hoist according to any one of claims 1 to 5 are implemented.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the steps in the method for calibrating the operating load of the hydraulic cylinder of the double-hanging-point radial gate hoist according to any one of claims 1 to 5 are implemented.

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