41results about How to "Limit the maximum displacement" patented technology

The invention provides a controllable damping molecule spring vehicle suspension. The controllable damping molecule spring vehicle suspension comprises a compressible hydraulic cylinder, an incompressible auxiliary cylinder, a piston, molecular spring mixed mediums and a magnetorheological fluid; the compressible hydraulic cylinder comprises an end cap and a cylinder body which are mutually connected, a membrane sheet is arranged at the position between the end cap and the cylinder body, and a cavity formed between the membrane sheet and the cylinder body is fully filled with the molecular spring mixed mediums; the incompressible auxiliary cylinder comprises an auxiliary cylinder body, and the auxiliary cylinder body is arranged at the end, away from the cylinder body, of the end cap in asleeving mode; a first sealing ring is arranged between the inner wall of the auxiliary cylinder body and the outer wall of the end cap to form a sealed chamber, and the chamber is fully filled with the magnetorheological fluid; the piston comprises main pistons and an auxiliary piston, wherein the main pistons and the auxiliary piston are mutually connected, the main pistons are located in the end cap and the auxiliary cylinder body and sequentially penetrate through the end cap and the auxiliary cylinder body to extend to the exterior of the auxiliary cylinder body; and the auxiliary pistonis located in the cavity formed between the membrane sheet and the cylinder body. According to the controllable damping molecule spring vehicle suspension, the structure is simple, performance is superior, and ride comfort and the control ability of a vehicle can be effectively improved.

The present invention provides a fan-out wafer-level chip packaging structure and method. The fan-out wafer-level chip packaging structure comprises: a conducting layer, wherein one groove configuredto arrange one chip is formed on the conducting layer, and the conducting layer is arranged on a substrate; an insulation layer arranged between the conducting layer and the substrate and configured to fill a gap between the conducting layer and the substrate; a packaging body arranged at the upper surface of the conducting layer, wherein the chip is packaged in the packaging body, one bonding padof each chip is exposed out of the packaging body; a conducting column arranged in the packaging body, wherein one end of the conducting column is coupled to the conducting layer, the other end of the conducting column is exposed out of the packaging body, and the conducting column is connected with a ground wire. The chip is arranged in the groove on the conducting layer, and the conducting layer is connected with the ground wire through the conducting column to form an electromagnetic shielding structure located in the fan-out wafer-level chip packaging structure, and therefore, the possibility can be reduced that the chip is subjected to electromagnetic wave interference by devices in the packaging structure and external devices, the preparation difficulty is small and the production cost is low.

The invention provides a tension exerting system for a conductor detection device. The detection device comprises pulley yokes, a main pulley component and a control cabinet which are sequentially arranged in the same axial direction; and the tension exerting system is characterized in that one pulley yoke is arranged outside each of two ends of a guide rail which is parallel to the axial direction; a drive part and a small pulley are respectively arranged on the inner side of each pulley yoke; the tension exerting system comprises a high-pressure oil cylinder, a tension sensor and a cart; both the high-pressure oil cylinder and the tension sensor are respectively arranged on the top of the cart; the high-pressure oil cylinder and the tension sensor are connected with a side pulley which is arranged on each pulley yoke. The conductor pulley-passing detection device adopts the track-cart tension exerting system, so that the stress on a conductor test specimen is more uniform, and the detection precision is improved.

The invention provides a wire detection method. The wire detection method is characterized in that the detection method includes a triangle wire detection method, and the triangle wire detection method includes a regular triangle and / or an inverted-triangle wire detection method. A wire winding pulley detection device is provided, pulley winding detection can be completed separately by means of a regular triangle pulley winding detection system and an inverted-triangle pulley winding detection system, and meanwhile, the double systems can carry out pulley winding detection simultaneously according to needs.

The invention discloses a highway bridge basin-type buffering bracket high in shock absorption property. The highway bridge basin-type buffering bracket high in shock absorption property comprises a bottom basin and a top plate; the bottom basin is provided with a first threaded hole set, a second threaded hole set, a third threaded hole set, a fourth threaded hole set, a fifth threaded hole set, a sixth threaded hole set, a seventh threaded hole set and an eighth threaded hole set; the top plate comprises an upper plate, bosses and anti-collision plates; a stainless steel plate, a Teflon plate, a transition steel plate, an upper offset plate, a lower offset plate, a round pressure plate, a rubber plate, a sealing ring and a buffering pad are arranged between the top plate and the bottom basin; and the bottom basin is provided with eight buffering limit assemblies and four buffering pull rod assemblies. A modular interface is adopted, so that the maintainability of the bracket is improved, the largest displacement in the axial direction and the transverse direction of a bridge is limited, cutting-off bolts are adopted for consuming collision energy, disengagement of the top plate and the Teflon plate is avoided through the buffering pull rod assemblies, heat energy is generated through uneven knurling, energy is consumed, and therefore the service life of the bracket is longer and the use effect of the bracket is better.

The invention provides an inverted triangle motion vehicle for a lead detecting device. The detecting device comprises a tension loading driving part, a tackle, a guide rail, a pulley system and a control cabinet which are sequentially arranged in the axial direction. The inverted triangle motion vehicle is characterized by comprising a motion vehicle body and an inverted triangle supporting frame arranged on the vehicle body. The inverted triangle motion vehicle is arranged on the guide rail, and the tackle, the inverted triangle motion vehicle and the pulley system are connected through a steel wire rope. By means of the inverted triangle motion vehicle for the lead detecting device, the stress of a lead test piece is more uniform, and the detecting precision is improved.

The invention provides a contact type micro-displacement detection device which comprises a hollow shell. A measuring rod is transversely arranged in the shell, the left end of the measuring rod penetrates out of the shell, the upper side and the lower side of the measuring rod are sequentially provided with magnetic control elastomers, piezoelectric patches and U-shaped mounting grooves from inside to outside, and the two U-shaped mounting grooves are arranged back to back, and cavities used for containing the first permanent magnet and the second permanent magnet are formed respectively with the upper inner side wall and the lower inner side wall of the shell, the two piezoelectric patches are connected with leads, a directional plate is fixedly arranged on the right side in the shell, the right end of the measuring rod penetrates through the directional plate and is freely suspended, and a cushion block is arranged on the right inner side wall of the shell. Guide rings are arranged on the left side wall of the shell and the directional plate, a left push plate is fixedly connected to the left side of the measuring rod, a right push plate is fixedly connected to the right side of the measuring rod, a left elastic reset mechanism is connected between the left push plate and the left side wall, and a right elastic reset mechanism is connected between the right push plate and the directional plate. Tiny displacement generated by an object can be accurately detected.

The invention relates to a passive pay-off rack. The technical problem that for a traditional passive pay-off rack, tension adjustment is inconvenient, and paying off is unstable can be solved. The passive pay-off rack comprises a pay-off rack main body which comprises a bearing frame, a bearing rod and a tension adapter, and a pay-off shaft is arranged under the tension adapter; the tension adapter comprises a transversely arranged threading plate and a longitudinally arranged swing rod, a cycloid gear is arranged on the top of the swing rod, the bottom of the swing rod is fixed to an elliptic bearing which is fixed in a shell, a circular bearing is fixed to the threading plate, the elliptic bearing and the circular bearing are tangently arranged, and the elliptic bearing is arranged above the circular bearing; the passive pay-off rack further comprises a vertical screw rod which is fixedly connected with the threading plate, the bottom of the vertical screw rod is fixedly connected with one end of a brake strap, the other end of the brake strap is fixed to the bearing rod, and a brake wheel is arranged on the upper portion of the brake strap and connected with the pay-off shaft.The passive pay-off rack is firm in structure, very small in abrasion loss and stable in pay-off tension.

The invention discloses a variable-rigidity friction pendulum bearing which comprises an upper steel plate, a sliding block, a lower steel plate and an SMA cable. The lower steel plate comprises a first steel plate body and a second steel plate body, the first steel plate body is connected with the second steel plate body, the second steel plate body is provided with a curved surface part, and the curved surface part comprises a small-radius spherical surface part and a gravity well curved surface part; and the small-radius spherical surface part is located in the center of the gravity well curved surface part, the upper end of the sliding block is installed on the upper steel plate, the lower end of the sliding block is installed on the small-radius spherical surface part, and the upper steel plate is connected with the first steel plate body through the SMA cable. According to the variable-rigidity friction pendulum bearing, the bearing is endowed with self-resetting capability and variable rigidity, and extremely rare earthquake oscillation can be resisted.

The invention relates to the technical field of 3D printing equipment, and discloses a photocuring 3D printer which comprises a forming platform and a material box and further comprises a boundary plate, a connecting groove connected with the forming platform is formed in the middle of the boundary plate, an energy absorption bag is arranged at the bottom of the boundary plate, the boundary plate is filled with liquid, and the energy absorption bag communicates with the boundary plate. According to the photocuring 3D printer, the amount of resin contained in the material box is always in a small state, the pressure on a release film at the bottom is reduced, deformation of the release film is reduced, secondly, the energy absorption bag at the bottom of the boundary plate has high energy absorption capacity, the liquid level can be rapidly made to be calm, the influence on forming is reduced, and in addition, the production efficiency is improved. The distance between the forming platform and the forming layer is judged by observing the height of the liquid level in the pipe, so that the consistency of zero setting each time is ensured, the forming precision is improved, on the other hand, the boundary plate also limits the maximum displacement of the forming platform, and the printer can be protected from being crushed.

The invention relates to a medical appliance, in particular to an earpick used for taking out earwax without injury to ear canals and eardrums, performing reasonable massaging, stimulating blood circulation of blood capillaries of the ear canals and enabling people to feel pleasure. The invention aims to provide a medical earpick which is simple in structure and low in cost and is used for semi-automatically taking out the earwax without injury to the ear canals and the eardrums under the control of people, even performing reasonable massaging, stimulating blood circulation of the blood capillaries of the ear canals and enabling people to feel pleasure. The medical earpick comprises an electromagnetic flexible joint (1); the bottom of a flexible barrel (34) is fixed with a lower plate (2); an inner cavity of the flexible barrel (34) is provided with an electromagnet (31), a permanent magnet (32) and a push rod (35) in sequence from bottom to top; the electromagnet (31) is fixed at the bottom of the flexible barrel (34); the permanent magnet (32) takes the inner cavity of the flexible barrel (34) as a guide rail; the top of the permanent magnet (32) is fixed with the bottom of the push rod (35); the top of the push rod (35) is connected with an upper plate (4).

The invention provides an anti-overturning jacking mechanism for a power transmission line tower. The anti-overturning jacking mechanism mainly comprises hydraulic cylinders, piston rods, U-shaped bolt plates, a jacking plate, a heat preservation layer, a limiting plate and a temperature sensor, wherein the hydraulic cylinders are installed on a bottom plate and a cement foundation through foundation bolts, the piston rods in the hydraulic cylinders are connected with the U-shaped bolt plates through cotter pins, the U-shaped bolt plates are connected with the jacking plate through bolts, and supporting legs of the power transmission line tower are installed on the jacking plate. When the power transmission line tower is inclined, the displacement of the supporting legs of the power transmission line tower is adjusted by adjusting the movement of the piston rods of the hydraulic cylinders. The mechanism acts on the bottoms of the four supporting legs of the power transmission line tower and solves the problem that the power transmission line tower cannot dynamically compensate or adjust itself when the foundation of the power transmission line tower is subjected to differential settlement at present.

The invention provides a tackle for a lead detection device. The lead detection device comprises a tension application driving part, the tackle, a main pulley assembly, a driving pulley system and a control cabinet, wherein the tension application driving part, the tackle, the main pulley assembly, the driving pulley system and the control cabinet are sequentially arranged in the same axial direction. The lead detection device is characterized in that the tackle comprises a tackle frame, a moving frame and a pulley supporting frame, and the tackle frame, the moving frame and the pulley supporting frame are sequentially arranged from bottom to top; the main pulley assembly comprises a main pulley supporting frame and a main pulley arranged on the top of the main pulley supporting frame; the tackle is connected with the tension application driving part, the main pulley assembly and the driving pulley system. The tackle for the lead detection device enables a lead test piece to be more uniform in stress and improves detection accuracy.

The invention discloses an adjustable elastic thread ligator, and relates to the technical field of medical instruments, and the adjustable elastic thread ligator is characterized by comprising a ligator body, a telescopic tube is inserted in the left side of the ligator body, a ligature tube is arranged on the left side of the telescopic tube, a trigger is arranged at the bottom of the ligator body, a first supporting plate and a second supporting plate are fixedly connected to one side of the telescopic tube, a rotating handle is arranged on the front face of the second supporting plate, a rotating shaft is fixedly connected to the back face of the rotating handle, the rotating shaft sequentially penetrates through the second supporting plate and the first supporting plate and extends out of the first supporting plate, a limiting assembly is arranged on the side, close to the rotating handle, of the second supporting plate, and an adjusting assembly is arranged between the first supporting plate and the second supporting plate. The rotation angle of the ligature tube can be flexibly adjusted, the problems that a traditional ligator is fixed in shape, cannot be bent and is inconvenient to operate are effectively solved, the adjusting accuracy is improved, the communication among surgeons is facilitated, and the working efficiency of medical staff is improved.