103 results about "Mechanical elements" patented technology

A dendrometer, comprising a single mechanical element functionally holds a sample under test via a spring-element in the element that draws two arms firmly against the sample. The spring section of the single mechanical element can be serpentine, or any other shape providing the desired spring constant and range of motion. The one or more spring members extend between the first frame member and the second frame member, wherein the one or more spring structures are nonrigid (extensible and compressible) such that the second frame member is movable relative to the first frame member. The dendrometer comprises a toothed socket on an end of each arm to allow adjustment of the range of clamping. In at least one example, a magnet or actuator attached to one arm, and a Hall effect or other positional sensor, is attached to the alternate arm.

The invention discloses a voice-driven mechanical element modeling method and system. A user inputs a natural language instruction containing a design intention into the CAD system through voice, and the natural language instruction is analyzed into a structured operation instruction; meanwhile, selecting a reference model, generating a geometric code corresponding to each surface based on a local geometric attribute corresponding to each surface of the model, and constructing a geometric structure coding matrix; predicting each machining surface in the machining features by using the machining surface prediction network to obtain a sequence formed by all machining surface IDs of the machining features in sequence, and recording the sequence as a machining surface ID sequence; and finally, executing API (Application Program Interface) calling of the CAD platform, and finally obtaining a model of the target mechanical element. According to the method, by connecting the high-level design intention and the bottom-level geometric operation of a designer, the tedious interaction and cognitive burden caused by manual selection and operation of low-level geometric elements (points, edges and surfaces) in traditional direct modeling is avoided, and the design efficiency is remarkably improved.

A system (100) for anomaly detection in an industrial drivetrain (104) comprising various mechanical elements driven by a three-phase electrical motor (102). The system comprises a sensor system (101) for obtaining electrical current and voltage waveform data by measuring electrical currents and voltages at the three-phase motor, and a computing system. The electrical waveform data contains frequency components relating to vibrations of mechanical elements of the drivetrain. The computing system performs the following steps: processing the electrical waveform data to obtain related frequency spectra, thereby enhancing traceability of the frequency components; combining the frequency spectra into a combined frequency spectrum, thereby further enhancing traceability of the frequency components; forming a spectrogram by monitoring the combined frequency spectrum over time; and tracing the frequency components in the spectrogram for anomaly detection of the related mechanical elements of the industrial drivetrain.

An exercise apparatus configured to provide spotting of a user during resistance exercises The present invention includes a frame wherein the frame comprises a plurality of vertical and horizontal support members operably coupled via mechanical elements. Barbell guide rod members extend between the upper and lower horizontal support members of the frame and have a barbell slidably coupled thereto. A peg assembly is provided wherein the peg assembly is configured to be releasably coupled into one of a multitude of apertures present in the vertical support members. The peg assembly includes a U-shaped support member having peg members operably coupled thereto wherein the peg members extend outward from the U-shaped support member. The peg assembly further includes a lower support member integrally formed with the U-shaped support member. The present invention employs a counterweight assembly that is operably coupled to the barbell providing assistance with moving weight thereon.

Implantable medical devices are disclosed herein, having a biocompatible housing; a driver of rotational motion; a receiver of rotational motion; and an interface configured to transfer torque from the driver to the receiver. In various embodiments, the interface comprises magnetic, mechanical, or magnetic and mechanical elements for transferring torque.

The utility model discloses element manufacturing equipment for hydraulic power machinery, which comprises a working table, a positioning mechanism is arranged above the working table, a rack is fixed on one side above the working table, an electric sliding rail is fixed above one side of the rack, a sliding seat is mounted on one side of the electric sliding rail, and a positioning mechanism is arranged on the other side of the working table. A driving motor is installed above the sliding seat, and a machining head is installed at the output end of the lower portion of the driving motor; according to the element manufacturing equipment for the hydraulic power machine, through cooperative use of the shielding mechanism, fragments can be splashed during machining of the machining head, the fragments can be effectively blocked through the shielding plate and prevented from hurting operators, meanwhile, diffusion of sweeps is reduced, and the machining efficiency is improved. According to the automatic opening and closing device, much dust is prevented from being generated in the hydraulic power mechanical element manufacturing process, the toothed bar can be driven to stretch out and draw back under the action of the air cylinder, then the gear is controlled to rotate, automatic opening and closing of the shielding plate are achieved, and manual operation of workers is not needed.

The invention discloses an inflatable cushion sample simulation modeling method, device and equipment, a medium and a product, and relates to the technical field of industrial automation. The method comprises the steps that after a two-dimensional drawing of the inflatable cushion is input, geometric features of the drawing are obtained firstly, then mechanical element feature points and dual point pairs of the drawing are determined according to the geometric features, and an uninflated model corresponding to the drawing is generated according to the mechanical element feature points; and finally, writing the mechanical characteristic tree data set and the mesh grid data of the uninflated model into tree data, and importing the tree data and the dual point pair group into a physical arithmetic unit based on a mechanical engine to obtain an inflatable cushion sample three-dimensional model corresponding to the drawing. In this way, the input two-dimensional vector lines can be converted into the classified function point element set, a 3d model with a small difference from a real proofing form is generated through simulation of a mechanical engine, then the three-dimensional model of the inflatable cushion sample can be rapidly and accurately obtained for subsequent testing, and subsequent entity proofing is facilitated.

The automatic registration and color adjustment system includes a can decorator comprising at least several plate cylinders and several inking stations, several sensors, and an automatic registration and color adjustment device communicatively coupled to the can decorator, the several sensors, and the several temperature control elements. The automatic registration and color adjustment device is configured to receive outputs from at least several sensors, determine that adjustments should be made to the can decorator based on those outputs and previous adjustment information, and control the can decorator to make the determined adjustments.

The clamping strategy of an electromechanical brake depends on an already existing hydraulic pressure, in order to adjust the mechanical component of the clamping force and avoid an excessive clamping of the brake. The hydraulic component (FHyd) of the clamping force is estimated according to a pressure measurement, subtracted from a target force (FTar) to obtain the mechanical component to be applied (FTarNew), and the electric motor for controlling clamping of the brake is stopped at a threshold value (I2) of the current that is supplied thereto, according to the value of this mechanical component to be applied.

The utility model discloses a leakproof sealing structure of a pneumatic power mechanical element, which comprises an air cylinder, an air inlet and an air outlet, the air inlet and the air outlet are arranged on two sides of the air cylinder, a lower concentric cylinder is embedded and fixed in each of the air inlet and the air outlet, an upper concentric cylinder is in threaded connection with the lower concentric cylinder, a connector is fixedly connected onto the upper concentric cylinder, and the connector is in threaded connection with the lower concentric cylinder. A clamping plate is connected to the side of the connector in a clamped mode, a locking screw rod is connected to the surface of the clamping plate in an inserted mode, an air pipe is fixedly connected to the connector, and a throttling valve and an electromagnetic valve are arranged on the air pipe. The upper cylinder and the lower cylinder which are concentric are arranged at the air inlet and the air outlet of the air cylinder, air can be prevented from leaking from the air inlet and the air outlet of the pipeline and the air cylinder, meanwhile, the clamping plate and the locking screw are arranged at the pipeline connector, the connector for fixing the pipeline can be further reinforced, the problem that the connector shakes under the impact of the air is solved, and the service life of the air cylinder is prolonged. Therefore, the pneumatic power mechanical element has the leakproof sealing effect.

A device (100) for determining a twisting clearance, with an inclinometer (10) designed to determine the inclination of a surface relative to a reference plane, a measuring lever (20), wherein the inclinometer is arranged on a surface of the measuring lever, and a centering clamp (30) arranged non-rotatably on the measuring lever, which is designed to be arranged at least partially in a rotatable machine element, wherein the centering clamp has several clamping jaws (32) and at least one centering piece (34) with several contact surfaces (35).

The invention relates to a method and a device for monitoring an automatic machine (10) for the manufacture or packaging of smoking, hygiene, food, or pharmaceutical products, the machine having at least one drive (A, B, C) that each moves at least one machine element of the machine (10), wherein, during operation of the machine (10), actual torques or proportional actual current values ​​of the drive (A, B, C) are compared with an upper and / or a lower limit value, and wherein, if an actual torque value or actual current value of the drive exceeds the upper limit value or falls below the lower limit value with which it is compared, an error signal is generated. The invention is characterized in that a) during operation of the machine (10) the upper and / or the lower limit value is calculated in real time according to the respective actual position of the drive (A, B, C) recorded during operation of the machine (10), or that b) during operation of the machine (10) the upper and / or the lower limit value is selected from a data storage device in accordance with the respective actual position of the drive recorded during operation of the machine (10), in which an upper and / or a lower limit value is stored for several possible or for each possible actual position of the drive of the machine (10).

This invention discloses a gear tooth accuracy testing device and method, relating to gear processing and production technology. The device utilizes conventional mechanical components, making it easy to manufacture and maintain, and suitable for rapid sampling inspection on the production floor. The auxiliary mechanisms, particularly the cage and adjusting components, can accommodate multiple sets of measuring columns. During actual gear measurement, each column can be measured sequentially as the gear rotates. Compared to existing testing equipment that repeatedly removes and reinstalls a single measuring column from the tooth groove, this effectively avoids the low efficiency caused by repeated placement of measuring columns, greatly simplifying the workflow. Furthermore, the testing method employs a process of first eliminating installation errors and then performing a second zero-calibration measurement. This facilitates data recording while effectively eliminating the influence of gear installation eccentricity, journal runout, and addendum runout on the measurement results, resulting in a more accurate reflection of the tooth groove's inherent deviation.

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 utility model provides a dustproof protection device for an air pressure power mechanical element. The dustproof protection device comprises an installation containing shell, an installation plate is arranged on the rear side of the installation containing shell, an air cylinder is arranged on the front side of the installation plate and located in the installation containing shell, a dustproof protection mechanism is arranged in the installation containing shell, and two through cavities are formed in the upper portion of the interior of the installation plate. Through the arrangement of the mounting plate, the air cylinder is mounted, meanwhile, the rear side of the mounting storage shell is sealed, and it is avoided that external dust or corrosives enter the mounting storage shell through the rear side of the mounting storage shell, so that the air cylinder is corroded and damaged; through the arrangement of the through cavity, an air guide pipe is guided into the mounting storage shell to be connected with the air cylinder when the air cylinder works; and by arranging the dustproof protection mechanism, the output shaft of the cylinder is protected when the output shaft of the cylinder extends, and the situation that the output shaft of the cylinder is damaged by dust and corrosives, follow-up use is affected, and the service life of the cylinder is shortened is avoided.

1. Name of the product in this design: Stepper Servo Motor (Series). 2. Application of this design: This design is used in a servo system to control the operation of mechanical components, and can convert voltage signals into torque and speed to drive the controlled object. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the key design points: Design 1 3D view. 5. Design 1 is designated as the basic design.

A system, comprising: a ring magnet that is coupled to a first portion of a mechanical element, the first portion extending in a first direction, the first ring magnet having npp1 pole pairs, where npp1 is an odd integer, and npp1≥3; a second ring magnet that is coupled to a second portion of a mechanical element, the second portion extending in a second direction that is opposite to the first direction, the second ring magnet having npp2 pole pairs, where npp2=4*m*npp2, m is an integer, and m≥1; first and second magnetic field sensor, the first and second magnetic field sensors being disposed at an angle of approximately 90 / npp1 degrees relative to each other; and third and fourth magnetic field sensors, the third and fourth magnetic field sensors being disposed at an angle of approximately 180 degrees relative to each other.

The positive expiratory pressure device with flow and oscillation control offers improved control over both airflow and oscillation characteristics. The primary mechanical elements of the device include an oscillation mechanism that creates intermittent airflow occlusion during exhalation. This mechanism is coupled with an adjustment system that allows for precise control over the oscillation frequency. Another significant feature of the invention is an integrated air manifold system. The air manifold provides adjustable control over the airflow through the device. By adjusting the valve within the manifold, a user can modify the overall resistance to exhalation, thereby controlling the amount of back-pressure generated during therapy. This feature allows for a wider range of pressure settings than a static manifold, making a device suitable for use for patients with varying lung capacities and conditions.

An exercise apparatus that is configured to provide spotting of a user during resistance exercises. The present invention includes a frame wherein the frame comprises a plurality of vertical and horizontal support members operably coupled via mechanical elements. Barbell guide rod members extend between the upper and lower horizontal support members of the frame and have a barbell slidably coupled thereto. A peg assembly is provided wherein the peg assembly is configured to be releasably coupled into one of a multitude of apertures present in the vertical support members. The peg assembly includes a U-shaped support member having peg members operably coupled thereto wherein the peg members extend outward from the U-shaped support member. The peg assembly further includes a lower support member integrally formed with the U-shaped support member. The present invention employs a counterweight assembly that is operably coupled to the barbell providing assistance with moving weight thereon.

To provide a steering device which complements a function of a damaged machine element, maintains operation of a brake, and improves safety even when the machine element is damaged by a large force.MEANS FOR SOLVING THE PROBLEM: A steering device 1 includes: a hub part 4 disposed at a rotational steering center; holding parts 5 which are disposed around the hub part 4 and held during rotational steering; and brake operation parts 10 respectively attached to the holding parts 5. Transmission means of brake operation of a brake operation part 10 to the vehicle side includes both of a machine element (a link mechanism 30) and an electric element (a sensor 14). The machine element includes a breaking part 36. In normal times, the machine element is used as the transmission means. After the machine element is broken at the breaking part 36 due to a brake operation amount of the brake operation part 10, the electric element is used as the transmission means.SELECTED DRAWING: Figure 3

The utility model discloses a convenient industrial textile processing winding device which comprises a fixing plate, the front end and the rear end of the lower surface of the fixing plate are fixedly connected with a moving bin, the side surface of the moving bin is fixedly connected with a motor, and the output end of the motor penetrates through the side surface of the moving bin to be fixedly connected with a threaded rod. A movable seat is arranged on the surface of the threaded rod, a threaded hole is formed in the position, close to the threaded rod, of the surface of the movable seat, the threaded rod is meshed with the threaded hole, the surface of the movable seat is a slope, a fixed bin is fixedly connected to the lower surface of the movable bin, and guide grooves are formed in the positions, close to the movable seat, of the surfaces of the two sides of the fixed bin; and a clamping plate is slidably connected in the fixed bin close to the guide groove. A threaded rod, a moving block, a flapping piece, a ventilation plate, an adsorption piece and a spring are arranged. Impurities on the surface of the cloth can be treated, the working table is kept clean, and therefore abrasion of small impurities to mechanical elements is reduced.

A motorized intramedullary nail for bone lengthening or transport, of the type including a first tubular portion extending in a prevalent axial direction of the intramedullary nail; a second rod-shaped portion telescopically sliding inside the first tubular portion and along the same axial direction; a motorized electro-mechanical element for driving the rod-shaped portion which are inserted inside the first tubular portion and comprising electrical terminals accessible through the proximal part of the nail; and an independent power supply with biocompatible features for subcutaneous and prolonged implantation, connected and adapted to providing, preferably with an electronic control, electrical power according to the surgeon's plan, to operate the motorized electro-mechanical system, the independent power supply comprising a biocompatible casing and at least one power supply battery housed in the casing.

We will measure the temperature dependence of cornering performance under various loads, especially low loads. [Solution] The present invention provides a method for evaluating the cornering performance of a tire T using a flat belt testing apparatus 1, comprising: a first loading step in which the tire T is pressed against the upper surface 21 of a rotating belt 20 with a first load; and a second loading step in which, after the first loading step, the tire T is pressed against the upper surface 21 of the rotating belt 20 with a second load smaller than the first load, while measuring the mechanical elements representing the cornering performance of the tire and the temperature of the tire.

The invention discloses a machining feeding assembly for precise mechanical element manufacturing, and relates to the technical field of mechanical element machining. A machining feeding assembly for precise mechanical element manufacturing comprises a bottom plate mechanism, and the bottom plate mechanism comprises a bottom plate; a bottom bin mechanism is arranged on the bottom plate mechanism and comprises a bottom bin fixedly connected with a bottom plate, and notches are formed in the middles of the upper sides of the two end walls of the bottom bin correspondingly. A strip conveying mechanism is erected on the bottom bin mechanism and comprises a conveying strip fixedly connected with two notches in an embedded mode, the section of the conveying strip is triangular, an arc groove is formed in the upper side of the conveying strip, the tail end of the conveying strip is fixedly connected with a feeding strip, and the section of the tail end of the feeding strip is gradually reduced. The head end of the conveying strip is provided with a pushing part used for moving an element. A camera mechanism for detecting elements is arranged at the tail end of the conveying strip; the head side of the camera shooting mechanism is provided with a pressing mechanism used for correcting an element. And a screening mechanism corresponding to the pushing part is arranged at the head end of the conveying strip, and the element position correcting accuracy is improved through three times of position correcting.

The present invention relates to a subsystem for assessing wear of a machine element, the subsystem comprising: a vibration sensor (11) connected to the electronic processing means (2) and coupled to the mechanical element; a vibration generator (3) intended to generate vibrations that are transmitted to said machine element, The generator (3) is configured to generate a vibration sequence; the electronic processing means (2) is programmed with at least one reference vibration profile of the mechanical element; ○Start the vibration generator (3), analyzing the vibrations generated by the vibration generator (3) and captured by the vibration sensor (11) to determine a captured vibration profile of the machine element; Configured to issue notifications regarding degradation of the captured vibration profile.

A numerical control apparatus 3 comprises: a pulse generation unit 34 that moves a plurality of machine elements of a machine tool 2 along a plurality of control axes on the basis of a movement pulse for the machine tool 2; an interference checking unit 36 that performs interference checking calculation for a plurality of interference-checking subject sets; and an interference checking assistance device 5 that assists the interference checking calculation. The interference checking assistance device 5 comprises: a first storage unit 51 that stores machine element-control axis linkage information; a second storage unit 52 that stores individual axis subordinate relationship information; and a checking subject set extraction unit 54a that, on the basis of the movement pulse, the machine element-control axis linkage information, and the individual axis subordinate relationship information, extracts one or more checking subject sets from among all combinations of the machine elements.

A method of manufacturing a mechanical element includes: a first step of forming a mechanical element that has a sliding surface, which constitutes machinery, by precision machining; a second step of subjecting the sliding surface of the formed mechanical element to surface processing; and a third step of grinding down protrusions on the sliding surface of the mechanical element subjected to surface processing with a grinding agent composition in which ceramic particles are dispersed in oil and embedding the ceramic particles in cavities on the sliding surface of the mechanical element, the ceramic particles each having a hardness higher than a hardness of the mechanical element and being 0.01 μm or more and 0.5 μm or less in particle size.

A method of applying a sinterable film to a substrate during a surface mount technology (SMT) process includes providing a substrate; providing a preform including a support film, the support film having a first surface and a second surface opposite the first surface, the support film having a sinterable film of metal particles (e.g., Ag, Ag alloy, Au, Au alloy, Cu, Cu alloy, Rd, Rd alloy, Ni, Ni alloy, Al, Al alloy, Ag coated Cu, Cu coated Ag) deposited on the first surface but not on the second surface; providing a pick and place machine with a placement head; picking up the preform via the second surface using the placement head of the pick and place machine; placing the preform in contact with the substrate using the pick and place machine, the contact being via the sinterable film; attaching the sinterable film to the substrate; and separating the support film from the sinterable film. The placement head may include a vacuum nozzle, and picking up the preform through the support film includes applying a vacuum to the second surface using the vacuum nozzle. Separating the support film from the sinterable film may be performed by moving the placement head of the pick and place machine away from the support film while maintaining the vacuum. The support film may be discarded from the pick and place machine by removing the vacuum. The support film may be used to manufacture additional preforms. The preform may be placed in contact with a cavity or recess in a substrate. The preform may be picked up from a holding carrier, preferably in the form of a waffle pack, carrier tape, or spool tape and reel station, using the placement head of the pick and place machine. The support film may include a polymer or polymer support film. The substrate may be selected from a direct bond copper (DBC) substrate, an active metal braze (AMB) substrate, a semiconductor surface in the form of a gate pad, a source pad, a drain pad, a collector pad, a silicon wafer substrate, a heat spreader, a metal connector, and a piezoelectric substrate. The preform may be square, rectangular, circular, and any polygonal shape that fits the approximate dimensions of the substrate.The metal particles have a longest dimension of 1-1000 nm, preferably 2-500 nm, more preferably 5-100 nm, even more preferably 10-60 nm. The metal particles may be capped with a capping agent, preferably selected from one or more of fatty acids, fatty amines and starches. The sinterable membrane may comprise non-metallic particles, which may be selected from one or more of carbon, silicon carbide, aluminum nitride, boron nitride and silicon dioxide, in coated or uncoated form. The metal particles may comprise silver particles and the sinterable membrane may be substantially free of copper, aluminum, glass, carbon and graphite particles. The sinterable membrane may be free of a silver foil layer. The sinterable membrane may comprise a binder, preferably having a softening point of 50-170°C, more preferably 70-120°C. The binder may comprise a resin and / or rosin, preferably hydrogenated rosin. The sinterable membrane may comprise a solvent, preferably selected from one or more of terpineol, butyl carbitol and isopropanol. The attachment of the sinterable film to the substrate is carried out at a temperature of 130-170°C and / or a pressure of 2-5 MPa and / or a time of 100-2000 ms, preferably 100-800 ms. A stack of sinterable films may be formed on a substrate by applying a first sinterable film to the substrate using the method described above and sequentially stacking one or more further sinterable films on the first sinterable film, each of the one or more further sinterable films being stacked by a similar method. The first sinterable film may be formed from the same material as the one or more further sinterable films or from a material having different mechanical and / or thermal properties than at least one of the one or more further sinterable films, and two further sinterable films may be stacked on the first sinterable film to form a stack having an inner sinterable film and two outer sinterable films, the inner sinterable film being formed from a material having different mechanical and / or thermal properties than the material forming the two outer sinterable films.The additive particles may be included between the first sinterable film and the further sinterable film and / or between the further sinterable films, the additive particles may include particles having a higher thermal conductivity than the first sinterable film and the material of the one or more further sinterable films, including, for example, diamond, and / or the additive particles include particles having a different Young's modulus than the material of the first sinterable film and the one or more further sinterable films. The die can be attached to the substrate by a method comprising applying a sinterable film to the substrate or forming a stack of sinterable films on the substrate using the above method, contacting the die with the sinterable film or stack of sinterable films, and sintering the sinterable film or stack of sinterable films to attach the die to the substrate. The width of the sinterable film may be smaller than the width of the die and the width of the substrate, and the die may be provided with an edge passivation and may contact the sinterable film such that the sinterable film does not contact the edge passivation. A method of attaching a clip, bond pad, or upper bridge structure to a die includes providing a die attached to a substrate, applying a sinterable film to the die, contacting the sinterable film with the clip, bond pad, or upper bridge structure, and sintering the sinterable film to attach the clip, bond pad, or upper bridge structure to the die, wherein applying the sinterable film to the die includes providing a preform including a support film having a first surface and a second surface opposite the first surface, the support film having a sinterable film of metal particles deposited on the first surface. The method includes providing a preform having a support film on a die, the support film having a sinterable film of metal particles laminated thereon, the support film having a sinterable film of metal particles laminated thereon, providing a pick and place machine with a placement head, picking up the preform via the second surface using the placement head of the pick and place machine, placing the preform in contact with the die using the pick and place machine, the contact being via the second surface, attaching the sinterable film to the die, and separating the sinterable film from the sinterable film, the sinterable film may comprise a stack of sinterable films. The bond pad may comprise a buffer layer between the sensitive top metal of the die and harsh interconnect methods such as copper wire or copper ribbon bonding that require high forces and ultrasonic energy.An upper bridge structure can result in a double-sided cooled module, where the drain and source connections of the die are sintered to the planar substrate to improve cooling potential and increase the volumetric density of the power module. Bridging contactors can also connect the die in the cavity of the substrate to the contacts of the substrate.

The application discloses a four-element model of concrete modulus and creep under long-period cyclic loading and a parameter determination method thereof. The model simulates the behavior of concrete under long-period cyclic loading through four series mechanical elements, including an instantaneous elastic deformation element with time-increasing stiffness, a recoverable creep viscoelastic element, an unrecoverable compression creep element and an unrecoverable tension creep element. In order to overcome the difficulty of small sample amount of the application object, the method adopts a step-by-step mode to classify and stage the parameter calibration of the concrete modulus and creep model.