693 results about "Frictional coefficient" patented technology

The support comprises an upper seat plate, a spherical crown lining plate, a middle steel lining plate and a lower seat plate, the upper seat plate is fixedly installed at the bottom of a beam bottom, the spherical crown lining plate is arranged between the upper seat plate and the middle steel lining plate, the middle steel lining plate is arranged between the spherical crown lining plate and the lower seat plate, and the spherical crown lining plate is fixedly installed on the lower seat plate. The lower seat plate is fixedly mounted at the top of a bridge pier, the bottom surface of the upper seat plate is fixedly connected with a first limiting ring through a first anti-shear pin, the first limiting ring abuts against the middle steel lining plate, the top surface of the lower seat plate is fixedly connected with a second limiting ring through a second anti-shear pin, and the second limiting ring abuts against the middle steel lining plate. In a normal use state, the slip surface adopts a large curvature radius and a small friction coefficient to provide smaller damping, reduce the acting force of the support on a bridge and reduce the lifting of a beam end, and in an earthquake state, the slip surface adopts a small curvature radius and a large friction coefficient to provide larger damping, so that the shock absorption and isolation effect of the support is improved; and displacement of the bridge under the earthquake condition is controlled.

The utility model relates to a tensioning device for a building block type screw. The tensioning device comprises a stretching piece, a pressing piece, a telescopic piece and a driving piece. The stretching piece is used for being connected with a locking piece of the building block type screw. The pressing piece is used for being connected with a thread element of the building block type screw. One end of the telescopic piece is connected with the stretching piece, and the other end of the telescopic piece is connected with the pressing piece; the driving part is connected with the telescopic part and used for driving the telescopic part to do telescopic motion. Compared with the prior art, the tensioning piece and the pressing piece only transmit axial force to the shaft core and the thread element, so that the transmission efficiency of the tensioning force is high, and compared with a radial screwing mode of a traditional torque wrench, radial load is not borne between the shaft core and the thread element, and the torque wrench is simple in structure and convenient to use. The problem that the friction coefficient is increased due to torsional deformation of the thread element and the shaft core spline is solved.

The invention provides a big data-based building construction safety assessment method, which comprises the following steps of: acquiring a tension distribution gradient, a local stress peak value, a tension fluctuation frequency and a pulley contact surface friction coefficient of a tower crane steel wire rope under a dynamic working condition, and determining a dynamic stress distribution characteristic of the steel wire rope; performing real-time data screening and peak value identification processing on the dynamic stress distribution characteristics to obtain a stress concentration coefficient distribution diagram of each measuring point, and determining a tension concentration area with the stress concentration coefficient higher than a preset threshold value; carrying out weighted adjustment on the non-uniform wear characteristics, calculating to obtain the surface wear depth, the wear particle size and the weight change of the contact surface temperature rise under different working conditions, and obtaining the real-time wear index weight distribution; and aiming at the real-time wear index weight distribution, combining the tension distribution gradient and the wear region area in the historical operation data, and analyzing and predicting the change trend of the surface roughness of the steel wire rope through wear trend fitting and load history to obtain a residual life prediction value.

The invention discloses a constant-tension self-compensation coating method and an intelligent deviation adjusting method, and belongs to the technical field of material dynamic characteristic on-line testing and cooperative control, and the constant-tension self-compensation coating method comprises the following steps: obtaining stress distribution data of the surface of a coating base material, generating a multi-mode optical data set, analyzing a real-time tension estimated value and material dynamic characteristic parameters, and obtaining a multi-mode optical data set; wherein the dynamic characteristic parameters of the material comprise an equivalent elastic modulus and a surface friction coefficient; generating a dynamic coupling coefficient based on the real-time tension estimation value and the dynamic characteristic parameters of the material, performing analysis and calculation, and outputting a tension compensation control quantity and a deviation adjustment control quantity; and the tension compensation control quantity is executed to adjust the unwinding or winding torque, and meanwhile, the deviation adjusting control quantity is executed to adjust the angle of a deviation correcting guide roller. According to the method, the dynamic characteristics of the material are analyzed in real time by adopting multi-mode optical perception, and the tension deviation coupling model is constructed, so that interference advanced cooperative inhibition and working condition self-adaptive stable coating can be realized.

The invention discloses a gear pair life prediction method based on dynamic stress, belongs to the technical field of reliability design of mechanical transmission systems, and aims to solve the problem of inaccurate life prediction caused by neglecting a dynamic effect and a real surface topography in an existing gear design method. The method comprises the following steps: firstly, acquiring gear pair interface mechanical property parameters considering shafting vibration, dynamic load and surface roughness, wherein the parameters comprise transient oil film pressure, friction coefficient, oil film thickness and shear stress; solving a three-dimensional subsurface stress field by adopting an algorithm and calculating von Mises equivalent stress distribution; stress volume integration is conducted on different rough surfaces, the honed surface is used as the reference, the relative fatigue life of other surfaces is calculated based on the Zaretsky life prediction theory, and accurate prediction and process optimization of the contact fatigue life are achieved; meanwhile, the dynamic bending stress of the tooth root is calculated based on the dynamic normal load, and the bending fatigue safety coefficient is checked.

A plurality of collapsible protrusions extending from a base including a first end, a second end, a first surface, and an outer surface. The second end is opposite the first end. The first surface is distal from the base. The outer surface is between the first end and the second end. The outer surface has a variable coefficient of friction. The variable coefficient of friction increases in a direction towards the base. The second end has a coefficient of friction greater than the coefficient of friction at the first end.

The invention provides a gear gluing analysis method and device, and relates to the technical field of data processing, and the method comprises the steps: simulating a gear transient meshing process based on a gear pair model, and obtaining mechanical parameters of gear meshing; based on the mechanical parameters, a gearbox temperature field and corresponding thermodynamic parameters are determined, and the thermodynamic parameters comprise lubricant viscosity and tooth surface deformation data; determining the minimum film thickness and the corresponding friction coefficient according to the mechanical parameters and the thermodynamic parameters; updating the three-dimensional gear pair model according to the tooth surface deformation data, and re-executing the transient meshing process of the simulated gear and subsequent steps based on the friction coefficient until convergence is achieved; and evaluating the gear gluing risk according to the tooth surface maximum contact stress, the tooth surface maximum temperature and the minimum film thickness during convergence. Therefore, through coupling analysis of mechanics, thermodynamics and lubrication, coupling analysis of multiple physical quantities is achieved, and the accuracy of gear gluing risk assessment is improved.

The application discloses a kind of vibration characteristics analysis methods of water turbine guide vane shaft-top cover rubbing coupling system, comprising the following steps: S1, using finite element method in combination with fixed interface modal synthesis method, the reduced dynamic model of guide vane shaft-top cover rubbing coupling system is established;S2, based on reduced dynamic model analysis mode truncation number, the influence law of friction coefficient and water flow surface load on the prestressed modal characteristics of guide vane shaft-top cover rubbing coupling system first 3 orders;S3, when reduced dynamic model is subjected to simple harmonic excitation, the influence law of near load end contact state, near-far load end contact state and friction coefficient on the vibration response and frequency spectrum characteristics of guide vane shaft-top cover rubbing coupling system;S4, based on the above steps, whether mixed-flow water turbine is stably and safely operated is evaluated.The application is analyzed by vibration characteristics of mixed-flow water turbine guide vane shaft-top cover rubbing coupling system, to monitor and diagnose the structural health state and failure of mixed-flow water turbine.

The application provides a self-adaptive eccentricity compensation and sensitivity enhancement type pressure ring sensor and a loading and unloading measurement model construction method thereof.The sensor comprises an upper force transmission unit, a lower force transmission unit and a measurement elastic body unit.The sensor adopts a spherical surface contact structure design, can automatically adjust and compensate the load eccentricity caused by the uneven contact between the contact planes, and reduces the influence of the eccentricity on the measurement results.The established sensor loading and unloading measurement model can accurately monitor the bolt fastening force in real time.The deformation of the measurement elastic body unit of the sensor is measured by using a fiber grating, and the sensor has the advantages of high precision and good reliability.In addition, the pressure measurement result of the sensor is irrelevant to the friction coefficient of the contact surface between the sensor and the nut and the structure, and the measurement precision of the sensor in actual application is further improved.The self-adaptive eccentricity compensation and sensitivity enhancement type pressure ring sensor has the advantages of small size, large range, high precision, automatic correction, good reliability and the like.

The invention belongs to the technical field of petroleum and natural gas industry, and discloses a gas seal thread sealing performance evaluation method and a thread optimization method and system.The evaluation method comprises the steps that structural parameters of a target connector are determined; determining the sealing contact effective length of the target joint and the initial interference magnitude of the sealing surface; obtaining a make-up torque model of the target joint; performing make-up torque parameter sensitivity analysis, and evaluating thread parameters by analyzing the influence of the magnitude of interference and the thread friction coefficient on the proportion of the total make-up torque and the shoulder surface acting torque; and performing finite element analysis on the target joint air-tight seal buckle, and evaluating the thread sealing performance under the corresponding working condition according to a finite element analysis result. Advanced theories of material mechanics, pipe column mechanics, finite element analysis and the like are integrated, various performance indexes of thread strength, thread sealing performance and the like of the threaded connector under different loading conditions can be comprehensively evaluated, and different parameter optimized thread structure stress values can be rapidly obtained.

The invention discloses a wide-temperature-range self-lubricating coating friction and wear performance evaluation method and a test system. The method comprises the following steps: preparing a sample of a self-lubricating coating on the surface of a matrix, cleaning the matrix sample and a counter-abrasion sample, carrying out friction test at multiple temperature points by adopting set parameters, recording change data of friction coefficients along with time in real time, calculating stable friction coefficients at each temperature point according to the data of the friction coefficients, and calculating the abrasion rate according to the abrasion crack condition. Therefore, accurate, reliable and repeatable coating tribological performance data can be obtained. According to the method, the change rule of the coating performance along with the temperature can be comprehensively represented, the problems that an existing test method is large in data fluctuation and cannot truly reflect the wide-temperature-range service performance are solved, and a key test basis is provided for research, development, screening and application of the high-performance self-lubricating coating.

The invention relates to the technical field of polishing pressure control, in particular to a polishing machine polishing head pressure control method and system.The polishing machine polishing head pressure control method comprises the steps that the contact area is calculated through a curvature self-adaption algorithm, and a basic pressure sequence is generated; estimating a real-time friction coefficient by monitoring motor current, stripping friction interference in combination with a geometric coupling factor, and reversely correcting a pressure sequence; and multi-step residual prediction control is introduced, an autoregression model is constructed to predict future pressure deviation, and a suppression sequence is generated to control feeding of the grinding head. Dynamic mapping between the contact area and the target pressure is established through the curvature self-adaption algorithm, and it is ensured that the pressure intensity of the complex curved surface is uniform; a non-linear friction interference algorithm is used for eliminating coupling errors, and misjudgment of the controller is prevented; residual prediction control is introduced to overcome system lag, advanced suppression of pressure fluctuation is achieved, and grinding robustness and surface quality are remarkably improved.

The invention relates to the technical field of dynamics, and discloses a dynamic modeling method for a bolt boundary cone-column combined shell under a non-uniform temperature field, and the method comprises the steps: integrating the temperature dependence of material performance and a thermally induced stress field, developing a nonlinear bolt connection interface model, and considering the dynamic evolution characteristic of a friction coefficient along with the temperature. Accurate characterization of structural dynamic behaviors in a non-uniform thermal environment is realized, a non-uniform temperature field is efficiently reproduced based on a built-in heat source experimental platform, the reliability of a model is verified by combining modal and response tests, and the influence of thermally induced material degradation and an interface stick-slip mechanism on structural rigidity and damping is disclosed. The accuracy of vibration characteristic prediction in a high-temperature environment is improved, algorithm type refined matching is carried out based on the combination information of the static and dynamic waveforms of the track in combination with the artificial intelligence bionic algorithm and the standard waveform information stored by big data, the combination data of the static and dynamic waveform parameters of the track is constructed, and reliable support is provided for algorithm matching.

Systems, assemblies, apparatuses, and methods herein may provide an enhanced fluid seal between two machine components. A seal may include a seal body having a seal body surface and a seal cross-section at least partially defined by the seal body surface. The seal body may include a first portion including a first material, the first material having a first coefficient of friction, and a second portion including a second material, the second material having a second coefficient of friction less than the first coefficient of friction, thereby to reduce friction at a seal interface between the second portion of the seal and one of the machine components, so as to reduce heat generation and extend a service life of the seal as the machine component moves relative to another machine component during operation of the machine.

The invention relates to the field of cabling devices, in particular to an efficient cabling device for cable production, which comprises a cable feeding unit and a positioning unit, the cable feeding unit comprises a base, a pay-off reel, a driving mechanism, a cable adding reel, a stranding shaft and a roller frame, one end, far away from the stranding shaft, of a support is fixedly connected with a circular ring, and the outer surface of a T-shaped rod is movably sleeved with an arc-shaped plate. A bevel gear is driven to be meshed with a bevel rack in the rotating process of the circular ring, so that an eccentric wheel is driven to rotate, the eccentric wheel rotates to push an arc-shaped plate to smoothly stretch a cable, and the cable can be conveniently stretched. When the cable is tensioned, the cable in a straightened state is stressed to force the cable roller of the pay-off reel to rotate in an accelerated manner, a small section of cable is additionally released to counteract the compression force, then under the action of the reset spring, dynamic balance of buffering and tension releasing is formed, the friction coefficient in the cable forming process is reduced, and the situations of scratches, skin breaking and other damage caused by friction are effectively avoided.

The invention relates to the related technical field of industrial equipment, and discloses a comprehensive rotating platform for industrial equipment, which is characterized in that a rotating supporting part is fixedly mounted above a bracket, a workpiece is placed on the surface of the rotating supporting part, and an extrusion locking device and a clamping arm gripper device are arranged in the rotating supporting part; the extrusion locking device comprises a flexible bending plate and a nail ball, wherein the flexible bending plate is made of an imported high-elasticity polyurethane material; by means of the centrosymmetric deformation design of the flexible bent plate and the cooperation of the squeezable spiked balls with the rubber protruding points on the surfaces, a self-adaptive attaching structure is formed, no matter whether a workpiece is a regular plane bottom or a bottom wall with a small radian, dead-corner-free wrapping can be achieved, the combination of springs arranged in the spiked balls and the rubber protruding points on the surfaces is achieved, the friction coefficient is increased, and meanwhile the service life of the workpiece is prolonged. The vacuum suction cup is made of nitrile rubber through the folding telescopic part to ensure the fitting degree, and the vacuum degree is formed under the action of an air pump machine to generate strong adsorption force.

The invention discloses a slow-start pneumatic switch valve device for trichlorosilane feeding, and belongs to the technical field of material preparation process valves. Comprising a switch valve and a pneumatic actuator, linear motion of a piston rod is converted into rotation fine adjustment through a swing arm rotation compensation mechanism, a solid / microgroove sealing ring and a sliding cavity wall are always kept on a theoretical contact line, abrasion microgaps are automatically compensated, zero-clearance sliding in the whole life cycle is achieved, and manual clearance adjustment is avoided; the solid sealing ring adopts surface-surface contact, so that the unit pressure is reduced by more than 50%, and the wear rate is obviously reduced; the omega-shaped groove of the microgroove sealing ring converts solid particles (10-50 microns Si) into groove edge elastic sealing, and the wear rate is reduced by 40% again; a sealing surface is provided with a uniform oil film, the dynamic and static friction coefficient difference is reduced, crawling / jumping in a 0-20% opening low-speed stage is eliminated, true slow starting is achieved, the water hammer effect during trichlorosilane feeding is avoided, the sealing surface is provided with the uniform oil film, the dynamic and static friction coefficient difference is reduced, and crawling / jumping in the 0-20% opening low-speed stage is eliminated.

The invention relates to the technical field of plastic track materials, and discloses an environment-friendly anti-skid plastic track material and a preparation method thereof, the environment-friendly anti-skid plastic track material comprises the following raw materials by mass: 50-55 parts of hyperbranched polyethylene, 10-15 parts of an anti-skid wear-resistant filler, 5-8 parts of a plastic flexibilizer, 45-50 parts of an inorganic filler, 1-2 parts of a plastic foaming agent, and 1-2 parts of a dispersant. The anti-skid and wear-resistant filler can generate large resistance in the plastic track material, increase the friction coefficient, enhance the anti-skid capacity of the plastic track material, effectively disperse pressure, reduce local wear and improve wear resistance, and in addition, the anti-skid and wear-resistant filler can form a network structure capable of absorbing and weakening external pressure in the plastic track material, so that the anti-skid and wear-resistant performance of the plastic track material is improved. The impact resistance and the bearing capacity of the plastic runway can be enhanced, so that the plastic runway is not easy to crack or break under the action of external force.

The invention discloses a super-precision spring performance monitoring method and system, and relates to the technical field of precision manufacturing, and the method comprises the steps: determining the static friction state of a contact surface between a super-precision spring and a supporting clamp after a compression force is applied to the super-precision spring; if the static friction state is that the contact surface of the clamp is lubricated abnormally, interface friction dissipation and spring body energy dissipation are calculated after axial circulation loading is executed on the super-precision spring; after the axial cyclic loading is paused and the compression force is applied again, a static friction coefficient is obtained; according to the interface friction dissipation, the spring body energy dissipation and the static friction coefficient, performance detection is conducted, and a performance detection result is obtained. According to the invention, the performance monitoring of the super-precision spring is realized, and the accuracy is improved.

The invention relates to a meshbelt structure simulation method with heterogeneous left and right selvedges based on parameterized segmented modeling, which comprises the following steps of: deconstructing a meshbelt into three heterogeneous functional areas of left overlock, middle main body and right connection, and independently controlling by adopting a Bezier curve, a composite wave equation and a catenary fusion model respectively; the synchronous accurate expression of the closeness of the left side overlock coil, the warp and weft interweaving stability of the main body and the mechanical rationality of the right side U-shaped connection is realized, and the problem of geometric distortion caused by unified modeling in the prior art is solved. According to the method, a cross-scale coupling equation of tension (T), a friction coefficient (mu) and linear density (rho) is introduced, and a closed-loop mapping relation of technological parameters, geometrical morphology and mechanical response is established. For example, when the tension of the braid is increased, the curvature radius of the U-shaped connecting part is automatically reconstructed according to a formula, so that parameter regulation and control are upgraded from experience trial and error to intelligent optimization of physical driving.

A refrigerating machine oil containing alkylbenzene and a hydrocarbon oil other than alkylbenzene having a refractive index of 1.445 or less at 20 DEG C.

The utility model discloses an automatic clamping device which comprises a machine frame, the machine frame is of a rectangular frame structure, a bidirectional lead screw is arranged in the middle of the machine frame, the bidirectional lead screw is rotationally connected with the machine frame, a driving mechanism is arranged at one end of the bidirectional lead screw and can drive the bidirectional lead screw to rotate, two sliding blocks are symmetrically arranged on the bidirectional lead screw, and the two sliding blocks are driven by the driving mechanism to slide on the machine frame. The two sliding blocks can move towards each other or away from each other; corresponding clamping parts are arranged at the lower ends of the two sliding blocks, and the two clamping parts are oppositely arranged; the clamping parts are driven by the driving motor to clamp an object, the clamping plates of the clamping parts are cloth clamping rubber plates, the friction coefficient is large, the anti-skid and stabilizing functions are achieved, the stability of the object to be clamped is effectively guaranteed by combining the adsorption force of the adsorption mechanism, and the clamping parts can be used for clamping the object to be clamped. And the safety of clamping work is greatly improved.

The invention discloses a device and method for improving netlike grains on the roller surface of a cathode roller, and relates to the technical field of metal surface treatment, and the device comprises a roller arranged on the surface of a cathode roller main body; the gears are coaxially arranged on two sides of the roller and synchronously rotate along with the roller; the clamping insertion block is movably arranged above the gear; the special-shaped push block is fixed at the bottom end of the second oil cylinder; and the circular balls are arranged in the protective shell at equal intervals and roll and displace under the thrust of the special-shaped push block. The characteristic that the friction force can be changed before and after the cathode roller body is polished is ingeniously utilized, the idler wheels interacting through friction transmission are arranged on the surface of the cathode roller body in a contact mode, and the transmission effect of the idler wheels is dominated by the friction coefficient of the contact face; the rolling wheel does not rotate any more and drives the milligram energy actuator to be away from the cathode roller body, the cathode roller body is not polished any more, excessive polishing is prevented, and the risk that net-shaped lines are generated on the surface is reduced.

The utility model discloses a variable-diameter hinge rod for a reinforcement cage telescopic mechanism. The variable-diameter hinge rod comprises a rod body I, the second rod body is located at the bottom of the first rod body and rotationally connected with one end of the first rod body; the device further comprises a rolling lubrication assembly. The rolling lubricating assembly is composed of a rolling piece and a lubricating piece, the rolling piece is arranged at the top of one end of the second rod body, and the rolling piece is connected with the bottom of one end of the first rod body in a rolling mode. The lubricating piece is located at one end of the first rod body, the lubricating piece is located over the rolling piece, and the lubricating piece penetrates through the first rod body and forms a channel to the position of the rolling piece. According to the utility model, the rolling lubrication assembly is arranged, the original connection mode which is easy to generate high frictional resistance due to plane attachment is ingeniously converted into rolling connection, and the rolling connection replaces sliding between planes through rotation of the rolling body, so that the contact area and the friction coefficient are greatly reduced; and the hinge rod can work more smoothly with low energy consumption in the moving process, so that the friction force is obviously reduced.

The invention discloses a micro-nano pressure rotating motor, which comprises an output middle shaft, an elastic friction plate, a linear driver, a pre-tightening supporting seat and a stator, the output middle shaft is arranged in the stator and extends out of the stator, the output middle shaft rotates relative to the stator, and a pressure-torsion flexible hinge is arranged in the middle of the output middle shaft; the elastic friction plate is arranged at the lower part of the output middle shaft and is in frictional contact with the lower end of the output middle shaft; the contact part of the elastic friction plate and the output middle shaft can move along the axial direction; the periphery of the elastic friction plate is fixedly connected with the stator and cannot rotate; the linear driver drives the bottom of the elastic friction plate; the pre-tightening supporting seat is arranged on the stator and is used for supporting the linear driver and enabling the linear driver, the elastic friction plate and the output middle shaft to be mutually compressed; the friction coefficient between the output center shaft and the stator is smaller than that between the output center shaft and the elastic friction plate.

The utility model belongs to the technical field of glasses supports, and discloses a limiting structure of a glasses support, which comprises a glasses frame connecting piece and glasses legs, and is characterized in that the glasses legs and the glasses frame connecting piece are connected through a hinging piece, the hinging piece comprises a clamping piece and a rotating shaft, the glasses frame connecting piece and the glasses legs are both connected with the rotating shaft, and the clamping piece is clamped on the rotating shaft; wherein gaskets are arranged between the glasses legs and the rotating shaft, and the gaskets are configured to be used for reducing friction; through the arrangement of the gaskets, the joints are smoother in the moving process, the friction coefficient between the glasses legs and the rotating shafts can be remarkably reduced, the clamping stagnation phenomenon at the joints of the glasses frame and the glasses legs is reduced, and meanwhile abrasion caused by repeated unfolding and folding is reduced. Therefore, the service lives of the spectacle frame connecting piece and the spectacle legs are prolonged, and the material damage caused by friction is reduced.

The invention relates to the technical field of air distributors for ships, in particular to a noise-reduction mute air distributor for a ship, and aims to solve the problem that the noise reduction effect is not ideal due to noise generated by collision and friction between airflow and meshes in the prior art. Air flow is introduced into the filtering holes formed in the moisture absorption plate through the splitter plate, the contact area between the splitter plate and the air flow is small due to the fact that the splitter plate is triangular, and polytetrafluoroethylene is sprayed to the surface of the splitter plate, so that the friction coefficient is reduced, and noise is reduced; the moisture absorption plate can absorb moisture existing in the airflow, the activated carbon filter screen can further remove impurities in the air, finally, when the airflow enters the air conveying pipe, the sponge can thoroughly remove and absorb the residual moisture and the impurities in the airflow, due to the soft characteristic of the sponge, noise can be reduced again, and the noise is reduced. The effect of reducing noise generated when the air distributor body works is achieved.

The application relates to the technical field of swing plate shearing machines, and discloses a blade gap adjusting mechanism of a hydraulic swing plate shearing machine, which comprises an adjusting seat, an adjusting mechanism arranged on the adjusting seat, a sliding seat arranged in the adjusting seat, a shearing mechanism arranged on the sliding seat, an oil storage tank, a piston cylinder and a function box fixedly installed at the top of the adjusting seat, wherein the piston cylinder is located at the right side of the oil storage tank, and the function box is located at the right side of the piston cylinder; a piston mechanism is arranged in the piston cylinder, and a push plate is slidably installed in the function box. The application has the following advantages and effects: the piston mechanism and the lubricating mechanism are arranged, the lubricating oil can be uniformly sprayed on key transmission parts such as the screw thread surface and the bevel gear meshing position through the oil injection head, a continuous oil film can be formed, the friction coefficient is reduced, the wear of parts is reduced, the smooth transmission is ensured, the hysteresis and unevenness of manual lubrication are avoided, and the like.

The utility model relates to a kind of coating device with antiskid conveying structure, core improvement is to replace the first over roller of traditional metal over roller of winding guide roller group with plastic material and the first over roller of surface being equipped with antiskid structure, to solve traditional technical defects.Plastic material friction coefficient is higher than metal, can naturally promote and the contact friction of flexible copper-clad plate substrate, surface antiskid structure is matched, can further increase effective contact area, make friction force multiple level promotion, ensure that flexible copper-clad plate substrate is stably and uniformly conveyed to winding mechanism.Meanwhile, plastic thermal conductivity is far lower than metal, surface temperature is little by environmental temperature and humidity fluctuation, not easy to reduce to dew point temperature below, reduce the condensation of over roller surface water vapor from the source, greatly reduce the probability of dewing, both eliminate the negative influence of water droplet on friction coefficient, consolidate antiskid effect, prevent flexible copper-clad plate substrate from being damp and deforming, improve the reliability and service life of final product.

To provide a simulator capable of appropriately reproducing acceleration acting on a user.SOLUTION: The control unit of the simulator receives the squaring angle detected by the first detecting unit or the squaring angle calculated from the angular velocity detected by the first detecting unit and the angle of attack detected by the second detecting unit, calculating an inertial force generated in the support plate in the turn action from an equation of motion related to a gravity of the user acting on the support plate, a frictional force between the support plate and the reference surface, and an air resistance acting on the user in the turn action, using a friction coefficient between the support plate and the reference surface in the turn action as a sum of a first friction coefficient between the support plate and the reference surface in a carving turn action in which the turn action is performed in a state of being inclined in the roll direction and a second friction coefficient between the support plate and the reference surface in a squatting turn action in which the turn action is performed so as to rotate in the yaw direction; The turning radius of the support plate in the turn operation is calculated, and the driving part is controlled based on the calculation result.SELECTED DRAWING: Figure 1