184 results about "Restoring force" patented technology

The invention provides a rotary table bearing-torque motor thermal vibration coupling modeling method, and relates to the technical field of machine tool reliability analysis. Comprising the steps of calculating bearing restoring force, torque and elastic rigidity; giving a dynamic balance equation of the main shaft system; unbalanced magnetic pulling force and unbalanced mass excitation are calculated; a displacement field is solved, and load changes caused by the displacement field are transmitted to the thermal model; the contact force borne by the bearing is updated by considering the load effect related to displacement, and the friction heat generation of the bearing and the heat generation of each part of the motor are calculated; calculating thermal deformation and thermal displacement of the bearing; thermal resistance among nodes is calculated, and a temperature field equilibrium equation is given through a thermal resistance network to achieve rapid thermal-mechanical coupling analysis; the thermal equilibrium equation is solved to calculate temperature response; importing the latest temperature into the kinetic model; lubricating grease viscosity and bearing thermal deformation are updated; and repeating the steps to finally obtain the main shaft displacement field and temperature field response. The method is high in accuracy, high in universality, low in test cost and high in test efficiency.

The invention relates to a stress calculation method, device, equipment and medium for a floating type draught fan foundation structure, and the method comprises the steps: carrying out the frequency domain potential flow water power analysis of a wet surface element model of a foundation floating body of a floating type draught fan, and obtaining the water power pressure distribution and a water power coefficient; boundary conditions are applied to the simulation model of the floating type wind turbine foundation structure, various working conditions are loaded, finite element analysis is carried out based on hydrodynamic pressure distribution, and various structural stress transfer functions are obtained; based on the hydrodynamic coefficient, performing linear processing on the fan aerodynamic force, the impeller pneumatic torque, the floating body hydrodynamic force and the mooring restoring force of the floating fan and the influence of a fan servo controller on the floating fan, and substituting a linearization result into a motion equation of the floating fan for calculation to obtain a plurality of dynamic response spectrums; and multiplying the structural stress transfer functions by the corresponding dynamic response spectrums, and adding a plurality of multiplied results to obtain a total stress spectrum. The method can improve the efficiency.

The invention belongs to the technical field of ocean information engineering, and discloses a joint simulation method for a structure collision effect in a floating installation process of an offshore converter station. The joint simulation method comprises the following steps: S1, setting sea condition parameters of an operation sea area and geometric parameters and material parameters of a floating system; s2, initializing a hydrodynamic model and a multi-body model; s3, solving the barge motion equation under the current time step by using the hydrodynamic model to obtain barge motion data; s4, calculating an LMU contact force and a DSU contact force under the current time step according to the barge motion data in the step S3, feeding back the LMU contact force and the DSU contact force to the hydrodynamic model, and updating the external load of the barge; and S5, repeating the steps S3-S4 until simulation in the set time step is completed, and then outputting a simulation result. According to the method, precise calculation of dynamic movement of the floating body and precise simulation of complex contact-nonlinear restoring force of the LMU can be considered, and high-precision simulation analysis of the whole floating installation process of the offshore converter station is achieved.

The invention provides a sliding guide rail system kinetic analysis method considering abrasion and creep, and relates to the technical field of numerical control machine tool kinetic analysis. The method comprises the following steps: firstly, establishing a multi-source wear model of a joint surface of an angular contact ball bearing, a lead screw-nut pair and a sliding guide rail, and constructing a creep degradation model of a bearing end cover bolt based on a Norton creep law; then correcting the elastic restoring force of the guide rail system by combining the evolution laws of the abrasion loss and the creep, and constructing a dynamic model of the bidirectional sliding guide rail system considering the comprehensive influence of the abrasion and the creep; bidirectional influence among abrasion, creep deformation and dynamic response is achieved, and finally the dynamic evolution law of the bidirectional sliding guide rail system under the long-term service condition is obtained. The method is clear in modeling process, high in universality and high in calculation precision, the degradation process of the dynamic characteristics of the guide rail system along with the service time can be truly reflected, and an effective theoretical basis is provided for numerical control machine tool service life prediction, structure optimization and operation reliability improvement.

[Problem] To facilitate the manufacture of a bearing seal that prevents electrical corrosion of a rolling bearing. [Solution] A bearing seal 1 for use in a rolling bearing comprises an annular sealing ring 2. The sealing ring 2 comprises a core metal 3 having a section 3B that contacts an outer ring 11, and an elastic body 4 connected to a laterally outer BO surface of the core metal 3. The elastic body 4 has an inner diameter lip section 7 extending toward an outer circumferential surface 12A of the inner ring 12 and inclined in a laterally outer direction BO as it approaches the outer circumferential surface 12A. A conductive element 5 is held such that an inner diameter section D, extending in a substantially radial direction R between the core metal 3 and the elastic body 4, abuts it.The conductive element 5 has a section that contacts the inner ring 12 and has an annular shape in a substantially single plane, which is its shape prior to installation of the bearing seal in the rolling bearing. The conductive element 5 is pressed by a restoring force of the inner diameter lip section 7, which is elastically deformed to contact the inner ring 12 while installed in the rolling bearing.

The application discloses a press-fitting method and tool for eliminating tolerance accumulation, and aims to solve the problem of press-fitting failure and gap on the bottom surface caused by height dimension tolerance accumulation when interference fitting is performed on two-part components. The method of the application adopts a press-fitting tool with a pressure spring, and the tool is composed of a connecting rod, a pressure spring, a base, a nut and a punch. During the press-fitting process, when the two components are about to be in place but not completely in place due to the tolerance, the press continues to press down to compress the spring in the tool, and the elastic restoring force generated after the spring is compressed is used to finally press-fit the two components to the completely adhering state. The application eliminates the influence of the part machining tolerance on the press-fitting depth through the spring compensation mechanism, is convenient to operate, has good press-fitting consistency, and significantly improves the product qualification rate.

The invention discloses an outer rotating tower type mooring device and method for a pool model test. The outer rotating tower type mooring device and method are used for solving the problem that a test platform cannot rotate freely. The device comprises a supporting frame, a sensor, a bearing seat and a rotating assembly, one end of the supporting frame is connected with a ship model, and the other end, away from the ship model, of the supporting frame is provided with an opening structure; at least one part of the sensor penetrates through the opening structure, and the bearing seat is connected with the sensor; the rotating assembly comprises a rotating shaft and a hanging scaffold used for mooring an anchor chain, one end of the rotating shaft is rotatably connected with the bearing seat, the other end, away from the bearing seat, of the rotating shaft is connected with the hanging scaffold, the hanging scaffold drives the rotating shaft to rotate synchronously when rotating, and the sensor is used for collecting mooring restoring force and dynamic response data information of the ship model. The device can ensure the synchronous free rotation of the rotating shaft and the hanging scaffold, and can effectively reproduce the free rotation characteristic of the external rotating tower type mooring system in engineering practice.

The present invention discloses a vehicle, a braking system, a brake, and a method for monitoring the braking condition. In the brake, the flange rotor is connected to the motor shaft and additionally to the stator via a rolling connection, so that the flange rotor can rotate together with the shaft of the brake motor relative to the stator. A slotted disk is arranged on the stator; an armature is connected to the flange rotor via a spring element, so that the armature can move back and forth between the flange rotor and the slotted disk along the axis of the flange rotor; a permanent magnet generates a first magnetic force on the armature. When the coil is de-energized, the first magnetic force opposes the restoring force, causing the armature to move towards the slotted disk and engage with it. When the coil is energized, it generates a second magnetic force on the armature.The combined force of the second magnetic force and the restoring force opposes the first magnetic force, causing the armature to move towards the flange rotor and detach from the slotted disc. This locks and unlocks the corresponding brake motor. The brake is integrated into the motor, reducing the size, noise, and energy loss of the braking system, as well as manufacturing and testing difficulties.

A plurality of combined type independent cylinders can be installed in a cushion body side by side, and each combined type independent cylinder is composed of a first compression spring and a second compression spring. The first compression spring is provided with a top part, a bottom part, a cylinder body connected between the top part and the bottom part, an air chamber formed in the cylinder body, and a connecting part arranged at the bottom part, and is used for controlling the cylinder body to elastically deform when the top part is stressed. The second compression spring is oppositely provided with a top edge and a bottom edge, the top edge is installed on the connecting part so that the first compression spring and the second compression spring can be stressed together, the restoring force of the second compression spring can be controlled to be larger than that of the first compression spring, and therefore the first compression spring can relatively weaken aftershock of the second compression spring. Therefore, the pad body applying the composite independent cylinder has comfort and restorability.

This invention relates to a method for calculating the restoring force caused by the surface tension of liquid fuel in a storage tank: A ground-based scaled-down storage tank control group is constructed, comprising three sets of scaled-down storage tanks, with each set consisting of two tanks filled with different test solutions; a ground swaying test is conducted on the ground-based scaled-down storage tank control group, and the first-order swaying fundamental frequency is recorded; the first-order resonance process of each ground-based scaled-down storage tank in the ground swaying test is equivalent to that of a simple pendulum model; and the gravitational acceleration g between the control groups formed by the same scaled-down storage tank radius and different test solutions is calculated. mn Based on the proportional relationship between the internal liquid surface tension and the equivalent acceleration generated by the internal liquid surface tension, the equivalent acceleration generated by the internal liquid surface tension of the scaled-down tanks in various locations is calculated. According to the principle that the liquid-filled tank of the spacecraft is proportional to the Bond number of the on-orbit environment, the equivalent acceleration generated by the internal liquid surface tension under the actual on-orbit operating conditions is extrapolated, and then converted into the restoring force caused by the surface tension of the liquid fuel inside the tank.

The utility model discloses a clamping device which comprises a main shell, two clamping arms are arranged on the two sides of the main shell, at least one sliding block is arranged on the main shell in a sliding mode, and at least one clamping arm is arranged on the sliding block in a sliding mode. The sliding block is movably locked on the main shell through a locking structure, an unlocking structure is arranged on the locking structure, a first elastic structure is arranged on the sliding block, and when the sliding block is locked on the main shell, the first elastic structure is elastically deformed; when the unlocking structure is unlocked, the sliding block slides outwards from one side of the main shell under the action of restoring force of the first elastic structure. The clamp has the advantages of being simple in structure, convenient to operate and even in clamping force of different widths.

The utility model relates to the technical field of extrusion dies, and discloses an extrusion die for processing aluminum alloy sections, which is characterized in that a fixed part and a fastening part are fixedly arranged on the inner walls of the two sides of the top of a bottom plate respectively, the fastening part is positioned on the outer side of the fixed part, movable frames are mounted at the top ends of the fastening part, and clamping blocks are arranged at the ends, close to each other, of the two movable frames; a sliding groove is formed in the upper surface of the movable frame, the fixing piece is connected to the inner wall of the sliding groove in a sliding mode, the fixing piece is sleeved with a pressure spring, and the pressure spring is located between the movable frame and the bottom plate. Through the arrangement of the clamping blocks and the compression springs, the position of the linkage plate is adjusted through the sliding rails, so that the clamping blocks clamp the two sides of the linkage plate under the action of the compression springs, primary blank fixing is completed, the clamping blocks loosen the linkage plate under the elastic restoring force of the compression springs, meanwhile, the tension springs pull the mounting blocks to reset to the initial position along the sliding rails, and finished products can be taken out conveniently and prepared for the next cycle; and the machining efficiency of the die is improved.

The application belongs to the technical field of simulation analysis, and particularly relates to a multi-physical field coupling simulation method of an electric spindle. The multi-physical field coupling simulation method of the electric spindle comprises the following steps: S100, a multi-physical field coupling model is established through finite element software, including: importing a geometric model, setting a material, setting a rotor dynamics module, setting a solid heat transfer module and mesh division; S200, solving is performed through the finite element software, including: performing multi-physical field coupling of a bearing nonlinear restoring force model, a motor unbalanced magnetic pull model and a spindle thermal model with the electric spindle rotor model, and obtaining dynamic performance by solving. The simulation model for the dynamic characteristic research of the electric spindle in the technical scheme can meet the demand of the dynamic characteristic research of the electric spindle under actual complex working conditions.

The invention belongs to the technical field of hybrid magnetic suspension bearings, and discloses a staggered self-centering hybrid magnetic thrust bearing structure and a restoring force calculation method. According to the staggered self-centering hybrid magnetic thrust bearing structure, a radial repulsive force ring is used for generating a restoring force which counteracts the unbalanced force of an axial repulsive force ring in the radial direction and the gravity of a rotor, and the stability of two offset freedom degrees in a radial plane of the rotor is maintained; the axial repulsive force rings are used for counteracting unbalanced loads of the radial repulsive force rings in the axial direction and external axial loads and maintaining the stability of the rotor in the axial direction; the axial electromagnetic bearing is used for counteracting the overturning moment of the rotor around the radial plane and maintaining the stability of the rotor around the transverse rotation freedom degree and the vertical rotation freedom degree. The restoring force calculation method does not need to depend on finite element simulation, is suitable for occasions where calculation resources are limited and parameters in the initial stage of design need to be rapidly iterated, and has good rapidity, practicability and convenience in actual engineering application.

The application discloses an aircraft wing adjusting mechanism and adjusting method, and relates to the technical field of aircrafts. The aircraft wing adjusting mechanism comprises a guide part, a moving part, a first elastic temperature control assembly and a locking part. The guide part is fixedly arranged at both ends in the body. The moving part is fixedly connected with the moving end of the wing and can move along the guide part. The first elastic temperature control assembly is arranged between the guide part and the moving part. The first elastic temperature control assembly is deformed after being powered on, can drive the moving part to move in the first direction, and can drive the moving part to move in the second direction under the action of the elastic restoring force after being powered off. The locking part is arranged on one side of the guide part. The contraction and expansion of the wing can be realized through the power-on and power-off of the first elastic temperature control assembly and the cooperation of the locking part. The design requirements of the lightweight and compact design of the morphing aircraft can be met. Moreover, the transmission stage number is small, and the control mode of power-on and power-off has higher reliability and economy.

The invention discloses a hybrid self-resetting support provided with a rate-dependent viscoelastic damper, which belongs to the technical field of seismic resistance of structural engineering, and comprises an outer pipe, an inner plate, a viscoelastic damper, a shape memory alloy U-shaped damper and channel steel, the viscoelastic damper is formed by stacking a viscoelastic material layer and a steel plate, is fixed between the inner plate and the outer pipe, and is arranged at the end part of the inner plate; when an earthquake acts, the inner plate moves in the axial direction relative to the outer pipe, the viscoelastic material layer is driven to be subjected to shear deformation, and damping force related to the loading frequency is provided; in addition, a plurality of shape memory alloy U-shaped dampers are arranged between the inner plate and the outer pipe at intervals in the supporting axial direction, and the self-resetting capacity is provided through bending deformation. The U-shaped damper and the viscoelastic damper are stressed in parallel, damping energy consumption and restoring force are generated at the same time, the floor acceleration and the base shearing force can be effectively reduced, and the device has the advantages of being simple in structure and reliable in connection.

The invention discloses a key structure and XR equipment, and relates to the technical field of wearable equipment, the key structure comprises a roller and an elastic sheet, the roller is rotatably installed in a shell around the axial direction of the roller, a part of the outer edge of the roller penetrates through an avoiding hole and is exposed out of the shell, the part of the outer edge of the roller exposed out of the shell forms an operation area, and the elastic sheet is arranged in the operation area. A plurality of grooves and bulges which are alternately arranged in sequence are arranged on the roller in the circumferential direction of the roller; the elastic piece is located in the shell, when the roller is driven by the operation area to rotate around the axial direction of the roller, the elastic piece can be alternately matched with the groove and the protrusion in sequence, when the elastic piece is matched with the protrusion, the elastic piece is configured to abut against the protrusion so as to be pressed to contract, and when the elastic piece is matched with the groove, the elastic piece is configured to stretch into the groove through elastic restoring force. Rotation feedback is achieved through alternate cooperation of the elastic pieces, the grooves and the protrusions, a vibration motor does not need to be arranged, the structure is simple, the occupied size of XR equipment is small, cost is low, and the overall product cost of the XR equipment is reduced.

The embodiment of the invention relates to the technical field of machine tool equipment design and manufacturing, and provides a dynamic parameter off-line identification method for a ball screw linear feeding system, which comprises the following steps: establishing a dynamic equation according to the rigidity distribution type of the ball screw linear feeding system; steady-state input torque signals of the feeding system at different uniform speeds are collected through the experimental platform, and a steady-state friction force sequence is obtained; based on the kinetic equation, the steady-state friction force sequence and the corresponding feeding speed, a segmented fitting method is adopted to identify steady-state friction parameters; applying harmonic moment excitation meeting an amplitude constraint condition to the feeding system, and identifying a dynamic friction parameter and a linear restoring force parameter based on a kinetic equation; harmonic moment excitation is applied to the feeding system, an acceleration response signal is collected, and nonlinear restoring force parameters are identified through moment input and acceleration response output of the feeding system and based on a kinetic equation. Therefore, the dynamic parameter off-line identification of the ball screw linear feeding system is realized.

This invention relates to the field of magnetorheological vibration damper technology, and in particular to a magnetorheological vibration damper and its control method, system, and vehicle, comprising: an oil reservoir and a piston assembly and a floating piston slidably disposed within the oil reservoir; further comprising: a restoring force superposition component, which includes a built-in spring and a spring washer disposed at the end of the built-in spring; the built-in spring is sleeved on the piston rod, wherein, in the damper's mounted state, the built-in spring is in a pre-compressed state, and its elastic restoring force is used to at least partially offset the counterforce generated by the high-pressure gas below the floating piston; this invention, through the setting of a variable stiffness built-in spring, achieves adaptive mechanical characteristics of gentle comfort under small excitation and strong support under large excitation, enabling the vibration damper to match the force requirements of different working conditions only through the stiffness change of passive mechanical components without increasing the electromagnetic coil current.

The application provides a detection device, an electronic device and a reminding method. The detection device comprises a detection assembly and a shell assembly capable of relative movement. One of the detection assembly and the shell assembly is provided with a matching position, and the other is provided with a matching piece corresponding to the matching position. The detection assembly can move to a first position relative to the shell assembly under the action of an external force. When the detection assembly is at the first position, the matching piece can be matched with the matching position, and a restoring force is generated between the detection assembly and the shell assembly. When the external force is removed, the detection assembly moves to a second position, and when the detection assembly is at the second position, the matching piece is separated from the matching position. The detection assembly has a detection surface for receiving the external force. The detection device provided by the application can perceive the stress condition of the detection surface by moving the detection assembly relative to the shell assembly, so as to avoid excessive deformation of the surface of the individual to be detected due to excessive stress, and thus the accuracy of the detection result can be ensured.

The invention relates to a method for operating a drive unit (1) for a working machine (100). The drive unit (1) has a power-split transmission (3) with a variator (5). The variator (5) has an actuating device (30) for stepless adjustment of a gear ratio of the power-split transmission (3). When the working machine (100) starts up, a restoring force (40; 41) is induced on the actuating device (30). The method includes obtaining (I) longitudinal inclination information of the working machine (100). The method further includes controlling (V) the actuating device (30) such that the induced restoring force (40; 41) is at least partially compensated depending on the longitudinal inclination information. The invention also relates to a control device (8), a power-split transmission (3), and a working machine (100).

The application relates to a self-resetting torsional energy dissipation support component with nonlinear stiffness, belonging to the technical field of energy dissipation and shock absorption, which comprises an outer sleeve and an inner sleeve which are mutually sleeved, a plurality of torsional steel pipes are arranged in the inner sleeve cavity, rotating discs are fixed at the two ends of the torsional steel pipes, upper and lower core plates which are slidably connected and are used in cooperation with the rotating discs are arranged on the inner sleeve body, support connecting pieces are fixed at the ends of the upper and lower core plates away from the inner sleeve, a plurality of self-resetting spring assemblies are symmetrically arranged in the inner sleeve cavity away from the two ends of the torsional steel pipes, a pair of curve grooves are symmetrically arranged in the center of the rotating discs, struts which are used in cooperation with the curve grooves are arranged on the upper and lower core plates, during work, the upper and lower core plates move towards or away from each other, the rotating discs rotate, the rotating directions of the rotating discs on the two sides of the inner sleeve are opposite during work, the torsional steel pipes are twisted, the metal of the torsional steel pipes is deformed to dissipate energy, meanwhile, the self-resetting spring assemblies are stretched to provide nonlinear restoring force.

The invention relates to a modular brake module (1) comprising a brake disc (2) configured for rotationally fixed connection with a rotatable component (3), and at least one brake actuator (4) configured for braking the brake disc (2), wherein the at least one brake actuator (4) has a stationary component (5) and a guide element (6) axially displaceable therefrom, the guide element (6) having an axially displaceable element (7) with a first friction lining (8), wherein the axially displaceable element (7) is axially displaceable against a restoring force of at least one spring (10) via an actuating device. The invention further relates to a robot comprising such a brake module (1).

The invention relates to an accelerometer comprising: a support (2); an excitation mass (1) associated with an acceleration sensor having at least one acceleration sensitivity axis (As), the excitation mass being susceptible to forces caused by the acceleration to be measured and being susceptible to static forces such as gravity or inertial forces; and an elastically deformable connecting device (3) which connects the excitation mass (1) to the support (2). The accelerometer further comprises a fixed stop system (5) and a movable stop device (34), the movable stop device (34) being attached to the elastically deformable connecting device (3) or constituting part of the elastically deformable connecting device (3); and a movement system (4) configured to move the movable stop means (34) against the fixed stop system (5) to elastically deform the elastically deformable connecting means (3) in order to apply a restoring force (FR) to the excitation mass (1).

The invention provides a method and a device for determining rigidity characteristics of a vibration isolator. The method comprises the following steps: acquiring torque data of a torsion unit of the vibration isolator at different corners; establishing a first corresponding relation between the rotation angle of the torsion unit and the displacement data of the vibration isolator; obtaining a second corresponding relation between the restoring force of the vibration isolator and the displacement data according to the torque data and the first corresponding relation; and determining the rigidity characteristic of the vibration isolator according to the second corresponding relation, wherein the rigidity characteristic comprises a rigidity change curve based on the restoring force and the displacement data. According to the method, the mode of strong nonlinear finite element modeling and whole machine prototype test depending on a complete vibration isolator is avoided, the rigidity characteristic obtaining period can be remarkably shortened, the test verification cost is reduced, the risk of finished product manufacturing failure is reduced, and the method can be popularized and applied to the rigidity characteristic determination process of vibration isolators with similar structures.

The present application relates to a kind of preparation method and test method of light weight big output shape memory composite actuator, comprising the following steps: step S1: preparation of execution unit and step S2: actuator splicing The beneficial effects of the present application are as follows: 1) the preparation method proposed in the present application can significantly improve the restoring force while ensuring the light weight of the actuator;2) by composite material and geometric configuration collaborative design, the deformation stability of the actuator is improved;3) the preparation method has good repeatability, and the execution performance has high consistency;The product is suitable for intelligent actuator, self-adapting structure, aerospace and other engineering scenarios that require large restoring force, reversible deformation output.

This utility model discloses a door handle, a car door, and a vehicle, comprising: a housing with an opening on one side; a rotating block rotatably connected to the housing, the rotating block having a guide groove, one end of the guide groove being a starting end and the other end being an ending end, the ending end being inclined towards the opening; a handle movably connected inside the housing, a driven arm rotatably connected to the side of the handle away from the opening, a driven shaft connected to the driven arm, the driven shaft extending into the guide groove; a first elastic element disposed between the driven shaft and the rotating block, the first elastic element having a tendency to move the driven shaft to the starting end; and a second elastic element disposed between the rotating block and the housing, the second elastic element having a tendency to allow the handle to enter the opening. This utility model provides a restoring force in different travel paths of the handle through the first and second elastic elements, which is beneficial for the handle to return to its original position stably, and the overall structure is simple and highly practical.

The present application provides a kind of servo test ship model motion posture control mechanism.The control mechanism is fixed on the pool trailer, and the control mechanism is connected with the test ship model, so that the basic requirement of the trailer, the control mechanism and the model moving at the same speed can be achieved. When the test encounters complex wave environment in the pool and generates six-degree-of-freedom oscillation, the platform and the steering connecting device in the control mechanism will also generate corresponding linear motion or angular motion, without locking a certain motion mode. The spring connected with the longitudinal platform and the transverse platform will provide stable restoring force in the tight condition to control the longitudinal, transverse and yaw motion of the model, and ensure the stability of the test ship model. At the same time, the steering connecting device fixed with the model is installed at the height of the center of gravity, which can effectively avoid the interference of the restoring force on the test model to generate additional torque to disturb the motion response of the model in other degrees of freedom.

The invention discloses a downward pressure control module of a screw locking robot, the screw locking robot and a control method of the screw locking robot. The lower pressure control module comprises a fixed part, a sliding part, a pressure lock spring and a sensing control board. The fixing piece is connected to the driving module. The sliding piece is slidably connected with the fixed piece and connected to the electric lock. The sliding piece moves relative to the fixed piece through the linear sliding rail. The pressing and locking spring is connected between the sliding piece and the fixed piece and provides elastic restoring force when the sliding piece moves relative to the fixed piece. The elastic restoring force is related to the displacement of the sliding piece relative to the fixed piece. The sensing control panel is fixed on the fixed part and spatially relative to the sliding part, and senses the displacement of the sliding part relative to the fixed part. The screw locking robot controls the driving module to drive the lower pressure control module and the electric lock according to the displacement, so that the electric lock abuts against the screw at constant pressure to conduct locking operation.

The present invention discloses a fully enclosed double-floating wave energy power generation device, comprising an outer float, an inner float, a buffer device, a cable winding device and a nonlinear bistable device; the buffer device is connected to a hydraulic device and a hydraulic power generation device; a wave-shaped groove is provided on the side of the inner float; the outer float comprises a buoy, a partition arranged in the buoy, and an energy-capturing buoy sleeved on the buoy; the cable winding device is located on the partition; an opening is provided on the partition, and a guide wheel with a rotating shaft is provided in the opening; the nonlinear bistable device comprises a pressure rod, a spring, and a sleeve fixed on the inner side of the buoy; the cable winding device comprises a cable winding rope, a cable power generation device, a transmission shaft, a spring plate bracket and a spring plate; the present invention utilizes the nonlinear bistable device to provide a nonlinear restoring force to cause two stable equilibrium positions to appear when the outer float and the inner float undergo relative vertical motion, thereby forming a bistable system, amplifying the motion amplitude of the float under wave excitation, expanding the capture frequency bandwidth, and improving the wave energy capture efficiency.