27results about How to "Avoid fatigue failure" patented technology

The invention relates to the technical field of seat cushion framework detection, in particular to an automobile seat cushion framework fatigue test method and system. The method comprises the following steps: acquiring information data of an automobile seat cushion framework sample; performing skeleton key part screening on the automobile cushion skeleton sample information data to obtain skeleton key part screening data; performing sensor data acquisition on the automobile seat cushion framework sample based on the framework key part screening data to obtain stress sensor acquisition data and deformation sensor acquisition data; and carrying out loading mode design on the information data of the automobile seat cushion framework sample to generate fatigue loading mode data of the automobile seat cushion framework. According to the invention, the accuracy and reliability of the fatigue test of the automobile seat cushion framework are improved by accurately screening key parts of the framework, designing a real loading mode, deeply detecting damage, predicting the service life and optimizing materials.

The invention discloses a spring-free magnetic springback type switch key, which comprises a shell, a shaft rod inserted into the shell, a magnetic column arranged in the shaft rod, an electromagnetic coil positioned in the shell and arranged outside the shaft rod in a surrounding manner, and a trigger assembly mounted in the shell and matched with the shaft rod, the shaft rod is provided with a hollow column body extending downwards, and the magnetic column is located in the hollow column body; an annular wall is arranged on the inner bottom face of the shell in an upward protruding mode, a guide groove matched with the hollow column in the shaft rod is formed, and the guide groove is used for conducting linear guiding on relative matching of the hollow column. And the electromagnetic coil is sleeved outside the ring wall. According to the switch key, the electromagnet is matched with the magnet, rebounding of the key is achieved through magnetic force, and the intensity of feedback force is flexibly changed by adjusting the magnetic force of the electromagnet.

The invention relates to the field of microwave oven switches, and particularly discloses a radio frequency reed high-precision driving structure and a driving method thereof.The radio frequency reed high-precision driving structure comprises a frame, a radio frequency switch and a driving mechanism; the radio frequency switch comprises a radio frequency reed element and two conductor rods, and the two conductor rods are installed on the frame in a spaced mode. The radio frequency reed element is arranged opposite to the two conductor rods and can move towards the two conductor rods; the driving mechanism comprises a push rod and a plurality of leaf springs; the plurality of leaf springs are mounted on the frame; one end of the push rod is connected with the plurality of leaf springs, and the other end is connected with the radio frequency reed element and is spaced from the frame. According to the invention, the driving precision of the radio frequency reed is improved.

The invention relates to a wing connection device for connecting an outer wing to a central wing and comprising a triple joint comprising a first joint, a second joint and a third joint, wherein the first joint is fixed to a central wing rear spar of the central wing, the second joint is fixed to an outer wing rear spar of the outer wing and the third joint is fixed to a docking rib web of the outer wing, and a rear strut plate fixed to a rear spar frame of the central wing. In this way, by fixing the rear strut plate to the rear spar frame of the central wing, the load from the outer wing can be spread, so that the stress level is reduced, the structural efficiency is improved and the deformation of the connection structure is reduced. For example, the rear strut plate spreads the upward load and spreads the load to the fuselage frame and via the fuselage frame to the fuselage. The invention also relates to an aircraft comprising such a wing connection device and to a method of connecting wings.

A manifold is provided, which is connected to an electrode tab disposed at one of two ends of an electrode assembly in the axial direction, wherein the end is inserted into the can when facing the bottom of the can. The manifold includes: a terminal engagement portion having a side surface that engages with a cap, the bottom of the can, or an electrode terminal; an electrode engagement portion surrounding the terminal engagement portion in the radial direction and having another side that connects to the electrode tab of the electrode assembly; a resilient connection portion disposed between the electrode engagement portion and the terminal engagement portion, and electrically connecting the electrode engagement portion and the terminal engagement portion; and an opening disposed between adjacent resilient connection portions in the circumferential direction, and separating the electrode engagement portion and the terminal engagement portion in the radial or axial direction.

The present invention relates to the field of seat cushion frame detection technology, and in particular to a method and system for automobile seat cushion frame fatigue testing. The method comprises the following steps: obtaining automobile seat cushion frame sample information data; screening key parts of the frame for the automobile seat cushion frame sample information data to obtain key part screening data for the frame; collecting sensor data for the automobile seat cushion frame sample based on the key part screening data for the frame to obtain stress sensor collection data and deformation sensor collection data; designing a loading mode for the automobile seat cushion frame sample information data to generate automobile seat cushion frame fatigue loading mode data. The present invention improves the accuracy and reliability of automobile seat cushion frame fatigue testing by accurately screening key parts of the frame, designing a true loading mode, conducting in-depth damage detection, life prediction, and material optimization.

In the embodiment of the present application, a motor-to-motor test platform and a method for suppressing power oscillation thereof are provided, which belongs to the field of motor testing technology. The motor-to-motor test platform specifically includes a power grid and a power circulation loop, wherein the power circulation loop includes a motor under test, a load motor and a control system, wherein the control system includes a machine-side rectifier electrically connected to the load motor, and a trap is connected in series with the active current instruction front stage of the machine-side rectifier to damp the current on the active current component in the transmission path. Through the processing scheme of the present application, the power circulating in the motor-to-motor test platform is reduced to produce undesirable low-frequency oscillations, thereby ensuring the safe and limited operation of the motor-to-motor test platform.

This invention relates to a multi-contact high-current connection terminal and connector. The multi-contact high-current connection terminal of this invention includes: an inner terminal and an outer shell, the outer shell being fitted over the inner terminal; the inner terminal has a first base and a first spring contact connected to the first base, the first spring contact having a first contact that connects to a mating component; the outer shell includes a second base, a second spring contact, and a third spring contact; one end of the second spring contact is connected to the second base, and the other end is bent inwards towards the second base and has a second contact that connects to the mating component; the third spring contact is connected to the side wall of the second base and bent inwards towards the second base, abutting against the first spring contact. The multi-contact high-current connection terminal of this invention, by setting a double-layer multi-contact structure, can carry a larger current while the third spring contact elastically supports the first spring contact, forming a double-spring contact arm, thereby increasing the positive force of the connection terminal and improving its current-carrying capacity.

This utility model provides a sheet metal supporting device for molds, comprising a support plate, a support plate connecting seat, a counterweight, and a magnetic attraction assembly. The support plate connecting seat is vertically fixed on a punch seat. The support plate is rotatably connected to the support plate connecting seat. The support plate has a supporting surface that can extend horizontally from the front side of the support plate connecting seat or retract as the support plate rotates. The counterweight is fixedly connected to the end of the support plate away from the supporting surface and is located on the rear side of the support plate connecting seat. The counterweight has an abutment surface that can contact the rear side of the support plate connecting seat. The abutment surface has a first groove recessed into the counterweight, and the bottom of the first groove has a threaded hole penetrating the counterweight. The magnetic attraction assembly includes a magnet and an adjusting screw. The magnet is movably disposed in the first groove, and the adjusting screw is threadedly connected to the threaded hole, with one end fixedly connected to the magnet. This utility model overcomes the problems of unreliable reset, inconvenient adjustment, and poor versatility of traditional mold sheet metal supporting devices.

A sunshade device, vehicle, and operating method are disclosed, belonging to the field of sunshade technology. The device includes a curtain fabric, a pivot assembly, and a locking assembly. The locking assembly includes a connecting bracket. Limiting buckles are fixedly connected to both ends of the connecting bracket and slidably positioned within corresponding guide rails. The limiting buckles are elastic elements. A handle is connected to the lower surface of the center position of the connecting bracket. A locking portion is fixedly provided on the lower surface of the limiting buckles, located on the side of the connecting bracket near the pivot assembly. When the curtain fabric needs to be rolled up, the operator pulls the handle diagonally downwards to cause the rear sides of the limiting buckles with locking portions at both ends of the connecting bracket to tilt upwards, thus separating the locking portions from the corresponding limiting grooves. This is the same hand action as with traditional manual sunshades, without adding any extra movements. It not only enables quick unlocking but also avoids excessive distraction, ensuring driving safety.

The present invention relates to a massage device, and more particularly, to a massage device having improved warming performance. The massage device for improving warming performance according to one aspect of the present invention comprises: a pressurizing unit for pressurizing a user; a transfer unit that moves the pressing unit in the longitudinal direction; and a lifting unit that lifts or lowers the pressing unit in the height direction. The pressurizing unit includes: a pressurizing member that comes into contact with the body of a user; a main body member that supports the pressing member; a heating member provided on the main body member so as to heat the pressurizing member in a conductive manner; and the temperature sensing part is arranged on the main body part and is used for measuring the temperature of the heating part.

The utility model relates to fire safety technical field, and disclose a fire pipeline stress compensation device, this fire pipeline stress compensation device, including the connecting head of no. The utility model relates to fire safety technical field, and disclose a fire pipeline stress compensation device, this fire pipeline stress compensation device, including the connecting head of no. The utility model relates to fire safety technical field, and disclose a fire pipeline stress compensation device, this fire pipeline stress compensation device, including the connecting head of no. The utility model relates to fire safety technical field, and disclose a fire pipeline stress compensation device, this fire pipeline stress compensation device, including the connecting head of no.

The utility model provides a ball stud assembly and a thrust rod assembly, relates to the field of ball studs, and adopts the technical scheme that the ball stud assembly comprises a ball stud, the ball stud comprises a ball head and a rod part, a buffer bushing is wrapped outside the ball head, the buffer bushing comprises at least two metal layers, and a buffer layer is arranged between every two adjacent metal layers. The ball pin can reliably buffer impact, and the service life of the ball pin is prolonged.

[Problem] The purpose of the present invention is to provide: a substrate for carrying catalyst that includes a beam-shaped flat portion which extends into a winding core portion and in which a hole is formed, wherein fatigue failure of the beam-shaped flat portion is suppressed by a simple method; and a catalyst carrier in which catalyst is carried on this substrate for carrying catalyst. [Solution] A substrate for carrying catalyst comprising: a honeycomb body formed by winding a flat foil and a corrugated foil each made of a metal foil; and an outer mantle placed at a position surrounding an outer circumferential surface of the honeycomb body, wherein a plurality of holes are formed in the flat foil and the corrugated foil, a beam-shaped flat portion extends into a winding core portion of the honeycomb body, the beam-shaped flat portion being an end portion of the flat foil or an end portion of the corrugated foil, part of the plurality of holes are formed in the beam-shaped flat portion, and the winding core portion has an inner diameter of 3 mm or less.

The utility model discloses a mounting guide rail for a liquid-cooled battery pack, and aims to overcome the defects of the conventional battery. The installation guide rails are arranged on the left side and the right side of the frame body, a plurality of windows are arranged on the installation bottom plate in the length direction of the installation guide rails, eccentric blocks are rotationally connected to the positions, corresponding to the windows, of the installation side plates, parts of the eccentric blocks extend out of the installation bottom plate through the windows, and sliding protruding points are further arranged on the installation bottom plate and located between the adjacent windows. The window is provided with a front edge and a rear edge, the front edge is close to the inlet direction of the frame body, the rear edge is far away from the inlet direction of the frame body, the eccentric block is attached to the rear edge after the battery pack passes through and is as high as the sliding protruding point, and the highest position of the eccentric block is located at the lowest position when the battery pack is attached to the rear edge. One-way feeding is achieved through the eccentric block, so that resistance borne by feeding of the battery pack in the front-back direction is inconsistent, and therefore fatigue failure caused by impact and vibration on the frame body is avoided.

The invention relates to the technical field of bearings, and discloses a compression-resistant high-wear-resistant bearing ring which comprises an outer ring, a supporting ring is arranged in the outer ring, a connecting plate is fixedly connected to the outer portion of the supporting ring, a first connecting column is fixedly connected to the outer wall of the connecting plate, and a connecting shaft is rotationally connected to the outer wall of the first connecting column. A connecting block is fixedly connected to the outer wall of the connecting shaft, a sleeve is rotatably connected to the outer wall of the connecting block, a supporting shaft is slidably connected to the interior of the sleeve, the outer wall of the supporting shaft is fixedly connected to the interior of the outer ring, a second spring is slidably connected to the outer wall of the supporting shaft, and the two ends of the second spring are fixedly connected to the outer wall of the sleeve; and a buffer assembly is arranged on the outer wall of the connecting plate. The second spring is compressed to buffer shaking of the supporting ring through the sleeve under supporting of the supporting shaft, so that friction and abrasion are reduced, contact of the bearing during operation is more uniform, the risk of local overload is reduced, and the service life of the bearing and the service life of a ferrule of the bearing are prolonged.

According to the technical scheme, the clutch diaphragm spring is characterized by comprising a disc spring and a plurality of separating levers connected with an inner ring of the disc spring. The separating lever is composed of a deformation part and a driving part, the deformation part is connected with the inner ring of the disc spring through a connecting mechanism, and the connecting mechanism allows the separating lever to freely rotate relative to the disc spring and achieve elastic reset. When the separating lever is not stressed, the separating lever is inclined to form a fan blade structure to play a role in heat dissipation, the connecting mechanism comprises a mounting groove and a rolling shaft, and the end of the rolling shaft is of a spherical structure and is matched with an arc-shaped groove, so that the separating lever rotates more smoothly, and friction and abrasion are reduced. The surface of the separating lever is provided with the protruding part and the concave part, the airflow path is optimized, the wind noise is reduced, and the system mute performance is enhanced. Through the design, the durability, the heat dissipation performance and the operation stability of the clutch are remarkably improved, and the clutch is suitable for the high-performance requirement of a new energy automobile clutch.

The present application relates to the technical field of oil casing, in particular to a titanium alloy threaded connection structure, comprising a pipe body and a coupling, the outer surface of the end of the pipe body is a male end, the male end has a male end thread and a male end sealing cylindrical surface, the inner surface of the coupling is a female end, the female end has a female end thread and a female end sealing cylindrical surface, the male end and the female end are connected through thread engagement, the stress uniformity, sealing performance and anti-sticking ability of the connection structure are improved through dynamic adjustment and optimization of each parameter of the thread, and safe connection and effective sealing of titanium alloy oil casing and oil pipes in extreme service environments are realized.

The utility model discloses a movable support of a hedge trimmer. The movable support comprises a chassis assembly, a steering assembly, a vertical supporting frame, a height adjusting assembly, a horizontal adjusting assembly and a rotating plate assembly. The chassis assembly is of a three-wheel chassis structure, and the vertical supporting frame is fixedly arranged in the middle of the trapezoidal chassis frame and inclines backwards. The height adjusting assembly is movably connected to the vertical supporting frame in a limiting mode, the horizontal adjusting assembly is movably connected to the height adjusting assembly in a limiting mode, and the rotating plate assembly is movably connected to the end of the horizontal adjusting assembly in a limiting mode. According to the utility model, the three-wheel type chassis is adopted, so that the stability of the bracket is improved while the flexibility is ensured; on the height adjusting structure assembly, in order to avoid fatigue failure caused by vibration, the durability of the equipment can be effectively improved through bolt tightening and fixing and multi-layer damping arrangement, and meanwhile stepless adjustment of the height can be achieved so that the equipment can be suitable for different pruning scenes.

This invention discloses a heat dissipation control method and device based on the synergistic coupling of piezoelectric jet and thermoelectric cooling. The heat dissipation control method includes: controlling a piezoelectric ceramic driving plate to drive an intake flexible valve plate to generate periodic bending deformation, thereby changing the volume of the compression chamber, so that the compression chamber alternately performs the intake process and the compression process; during the compression process, when the pressure difference between the compression chamber and the external environment pressure reaches the opening threshold determined by the pre-tightening force and effective pressure area of ​​the outlet flexible valve plate, the outlet flexible valve plate passively generates an opening deformation, so that the cooling fluid in the compression chamber is injected into the air inlet of the heat exchange module in the form of a jet through the air outlet; the heat from the heat source is absorbed by the cold end of the thermoelectric cooling module, and the heat is transferred to the hot end of the thermoelectric cooling module, and then transferred to the heat exchange module, and carried away by the cooling fluid injected from the air inlet of the heat exchange module, fundamentally avoiding the risk of fatigue failure of traditional mechanical valve plates.

The utility model discloses a sheet metal positioning cylinder. The sheet metal positioning cylinder comprises a cylinder body, a first mechanism, a second mechanism and a compression spring. The first mechanism comprises a taper pin pull head, a piston rod and a piston. The second mechanism comprises an inner taper face spring piece and a guide sleeve. The compression spring abuts against the lower end face of the guide sleeve. The taper pin pull head extends upward with the movement of the piston rod to be inserted into the positioning hole of the sheet metal. With the retraction of the piston rod, the inner taper face spring piece is pushed to expand radially and move downward. The inner taper face spring piece extends with the taper pin pull head to be inserted into the positioning hole of the sheet metal. With the retraction of the taper pin pull head, the inner taper face spring piece expands radially to grab the sheet metal and move downward to tighten the sheet metal for positioning. The utility model has the advantages of being suitable for smaller-diameter positioning holes, reducing production cost, eliminating mechanical interference and enhancing positioning stability.

The utility model discloses a new energy automobile battery module copper-aluminum flexible connection structure which comprises a copper-aluminum sheet, connecting seats are arranged on two sides of the copper-aluminum sheet, and mounting grooves are formed in the centers of the opposite sides of the two connecting seats. Fixing grooves are formed in the positions, close to the four sides, of the top of the copper-aluminum sheet and the positions, close to the front sides and the rear sides, of one sides of the tops of the two connecting bases, lifting plates are arranged at the tops of the connecting bases, and fixing rods are fixedly connected to the front sides and the rear sides of one ends of the bottoms of the lifting plates. According to the copper-aluminum flexible connection structure for the battery module of the new energy automobile, multiple stable connection is realized through precise clamping matching of a clamping groove I and a clamping groove II in a copper-aluminum sheet and a clamping plate I and a clamping plate II in the connecting seat and a locking mechanism of a limiting plate and a limiting groove; according to the design, the problems of loosening or fatigue failure of traditional bolt fastening or simple mechanical buckling under long-term vibration, temperature change and battery charging and discharging cyclic stress are effectively avoided, and the stability and durability of connection are remarkably improved.

The invention relates to a connecting device based on multiple floating body modules and a connecting method, and belongs to the technical field of offshore module platform connection. Through cooperative constraint of the pin shaft assembly, the tongue-shaped connector and the connecting box beam, displacement and rotation freedom degrees in different directions are limited respectively, and a manual latch device is arranged at the bottom to strengthen connection; and precise guiding butt joint in a dynamic environment is realized in cooperation with a traction device. The structure is clear in division of labor, complex loads caused by waves can be effectively resisted, and the connecting rigidity and stability are improved; and meanwhile, the underwater sealing capacity and the rapid combination characteristic are achieved, and the safety and the operation efficiency of the platform under the severe sea condition are remarkably improved.

This invention relates to the field of vibration isolator technology and discloses a hybrid vibration isolator and method for dual vibration control of electrical equipment. The base contains a bottom buffer assembly, and a buffer support assembly sits atop the bottom buffer assembly. The bottom buffer assembly provides vertical vibration isolation for the buffer support assembly. The buffer support assembly includes a cross-shaped base for mounting an electromagnet and a side buffer connection assembly connected to the side of the cross-shaped base. The side of the cross-shaped base slides against the inner wall of the base. A swing buffer assembly sits atop the cross-shaped base. This invention utilizes the coordinated operation of the bottom buffer assembly, buffer support assembly, and swing buffer assembly, combining mechanical buffering and electromagnetic control to achieve omnidirectional vibration control in the vertical, horizontal, and swing directions, overcoming the shortcomings of traditional single-direction vibration isolation devices. The composite structure combining multi-point support, oblique buffering, and vertical support ensures the stability of the mounting base and evenly distributes the load to prevent equipment tilting.

The invention relates to the technical field of steel part fatigue fracture failure technology and metallurgy, in particular to a method for avoiding fatigue failure caused by oxide inclusion in steel. The method for avoiding the fatigue failure caused by the oxide inclusion in the steel comprises the following steps: S1, obtaining the radius row of the maximum oxide inclusion in the detected steel; s2, calculating the safety thickness rsulfide of a sulfide shell layer correspondingly attached to the maximum oxide inclusion radius row according to the maximum oxide inclusion radius row in the step S1; and S3, the corresponding cooling rate RC of the casting blank in the solidification process is calculated according to the rsulfide obtained in the S2. Fatigue failure caused by oxide inclusion in steel is avoided by regulating and controlling the cooling rate parameter of the continuous casting process, and corresponding experimental evidence and theoretical basis are provided for material selection, design and reasonable inclusion size control for prolonging the service life of engineering materials.

The present invention relates to the field of medical devices, and in particular to an implantable device with a retractable anchoring structure. The implantable device comprises a support frame body, the support frame body at least comprises an anchoring portion, the anchoring portion comprises one or more repeated anchoring units, wherein the anchoring unit comprises a tissue contact portion and a connecting portion; the distal end portion of the tissue contact portion can form a hanging anchor with the cavity tissue; when the anchoring unit is subjected to radial compression, the connecting portion undergoes elastic deformation and drives the tissue contact portion to retract inwardly toward the radial center relative to the support frame body, thereby forming a non-puncture or low-puncture effect on the tissue contacted by the anchoring portion.

This application relates to the field of vehicle cargo securing technology, and in particular to an embedded cargo securing device for a vehicle compartment. The device includes an embedded base fitted into the side wall of the vehicle compartment. The base has a dovetail-shaped guide groove. A sliding block slides along the groove and is connected to a telescopic adjusting rod. The adjusting rod is connected to a flexible strap via a universal joint. A quick-release buckle is provided at the end of the strap. This device is embedded and integrated, does not occupy cargo space, uses magnetic positioning for the sliding block, and features multi-point cross-wrapping of the strap, making it adaptable to irregular or soft cargo and achieving rapid locking and reliable restraint.