13results about How to "Avoid fatigue failure" patented technology

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.

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 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 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.

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.

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.