976results about How to "Guaranteed connection strength" patented technology

The invention relates to the technical field of batteries, and discloses a battery top cover, a power battery and an assembly process of the battery top cover. The battery top cover comprises a cover plate assembly, a pole and a pressing block, a mounting hole is formed in the pressing block, the pole penetrates through the cover plate assembly and then is matched with the mounting hole, a welding groove is formed in the surface of the pressing block, the welding groove is communicated with the peripheral side of the mounting hole, the pole and the pressing block are fixed through welding, and the pressing block and the pole abut against the two sides of the cover plate assembly respectively. According to the battery top cover, the pole and the pressing block are fixed by welding, so that the whole battery top cover becomes a whole, the connection is stable, the process is simple, the cost is low, the assembly efficiency of the battery top cover is improved, and the connection strength of the battery top cover can be ensured. And the welding groove is used for accommodating the welding melt part and preventing the welding melt part from protruding out of the upper surface of the pressing block, so that the appearance smoothness and attractiveness of the battery top cover are ensured.

The invention belongs to a new energy automobile body structure in the technical field of new energy automobiles. The outer frame beam (4) and the lower bottom plate (5) are of an integrated structure made of aluminum alloy, a trapezoidal structure or a wedge-shaped structure is arranged on the outer side of the outer frame beam (4), a protruding part (10) of the threshold inner plate (9) abuts against the upper portion of the outer frame beam (4), an inner plate inclined face part (11) abuts against an outer frame inclined face part (7), a bolt bush (13) is arranged on the inner side of the inner plate inclined face part (11), and a threaded sleeve (14) is arranged on the inner side of the outer frame beam (4). A bolt (15) is connected with the threaded bushing (13) and the threaded sleeve (14), and an internal arrangement beam (6) is arranged in the lower shell (2) under the seat cross beam. According to the new energy automobile body structure, the structure is simple, the space utilization rate is increased, meanwhile, the bending torsion and collision performance of an automobile body is improved, meanwhile, the safety performance of side collision and side column collision is improved, and the torsional rigidity and the side collision performance of the automobile body are improved.

The utility model discloses a battery cover plate assembly, a battery shell and a battery. The battery cover plate assembly comprises a cover plate body. The cover plate body is a metal piece, the cover plate body is provided with a thinned area and a non-thinned area, the thickness of the thinned area is smaller than that of the non-thinned area, the non-thinned area comprises a first non-thinned area, and the first non-thinned area surrounds the peripheral side of the thinned area and is suitable for being connected with a shell of the battery shell. According to the battery cover plate assembly disclosed by the embodiment of the utility model, the thinning area is arranged and the thickness of the thinning area is smaller than that of the non-thinning area, so that the overall weight of the cover plate body can be reduced, and the light weight of the battery cover plate assembly is facilitated; therefore, the capacity ratio of unit weight of the battery can be improved, and the loading capacity of the battery under the same weight can be improved; moreover, the first non-thinned area surrounds the peripheral side of the thinned area and is suitable for being connected with the shell of the battery shell, and the thickness of the first non-thinned area is relatively large, so that the connection strength of the cover plate body and the shell can be ensured.

The invention provides a packaging structure and a forming method thereof, in the forming method, a bridge chip assembly is firstly formed, a silicon through hole of a bridge chip is exposed in a mode of firstly depositing a protection layer and then thinning the silicon through hole, the protection layer can protect a substrate in the thinning process, and the substrate is prevented from being damaged. Metal ions generated by thinning the silicon through hole can be prevented from being migrated and diffused into the substrate, so that the problem of reliability failure of the packaging structure caused by migration and diffusion of the metal ions is avoided; meanwhile, when the bridge chip assembly is plastically packaged, the bottom surface of the bridge chip assembly is provided with an adhesion layer, the adhesion layer is removed after plastic packaging, so that the bottom surface of the bridge chip assembly is higher than the bottom surface of the first plastic packaging layer, and after bottom rewiring layers are formed on the bottom surface of the first plastic packaging layer and the bottom surface of the bridge chip assembly, the bottom rewiring layers are formed on the bottom surface of the first plastic packaging layer and the bottom surface of the bridge chip assembly. The thickness of the bottom rewiring layer located on the bottom face of the bridge chip assembly is larger than that of the bottom rewiring layer located on the bottom face of the first plastic packaging layer, namely, the bottom of the bridge chip assembly is provided with a thicker dielectric layer, so that the connection strength of all connection points of the bridge chip assembly is guaranteed, higher stress buffering is provided for the bridge chip, and the reliability of the bridge chip assembly is improved. And the reliability of the packaging structure is improved.

The invention relates to the technical field of cable manufacturing, and particularly discloses an aerial insulated cable and a production process thereof, the aerial insulated cable comprises a conductor, the outer surface of the conductor is fixedly coated with a shielding layer, the outer side of the shielding layer is fixedly coated with an insulating tube, and the outer side of the insulating tube is provided with an outer sheath. The outer surface of the insulating tube is wrapped and supported through the arc-shaped inner surfaces of the limiting tubes and the reinforcing strips, so that the insulating tube is fixed in the outer sheath, the situation that the overall structural stability of the cable is affected due to displacement of the insulating tube in the outer sheath is avoided, the inner surface of the outer sheath is supported through the supporting strips and the reinforcing strips, and the service life of the cable is prolonged. The overall structural strength of the outer sheath can be enhanced, the situation that the normal work of the cable is affected by permanent deformation of the outer sheath is avoided, meanwhile, gaps are formed among the limiting pipes, the supporting strips and the reinforcing strips, heat generated when the cable works can be dissipated, and the phenomenon that the outer sheath swells when the cable works normally is avoided.

The invention discloses a wind power blade structure with a segmented tail edge and a method, solves the problem that in the prior art, the width of a wind power blade cannot be increased due to transportation limitation, and has the beneficial effect that on the premise that the strength is guaranteed, segmented transportation can be achieved so that the width of the blade can be increased. Comprising a blade body and a blade trailing edge which are arranged in the chord direction of the blade, the blade body is provided with a first notch, the blade body is provided with a first trailing edge beam in the length direction of the blade body, the first trailing edge beam passes through the first notch, and a first web is arranged at the first notch of the blade body in the thickness direction of the blade body and supports the first trailing edge beam; a second notch is formed in one side of the blade rear edge, the shape of the second notch is matched with that of the first notch, a second rear edge beam is arranged in the length direction of the blade rear edge and passes through the second notch, and the first rear edge beam and the second rear edge beam can be bonded into a whole.

The invention provides a foldable dimming film which comprises a bendable base material layer, a first adhesion promoting layer, a conductive layer, a second adhesion promoting layer, a polymer dispersed liquid crystal layer, a second adhesion promoting layer, a conductive layer, a first adhesion promoting layer and a bendable base material layer which are sequentially stacked, and the conductive layer comprises graphene oxide and silver nanowires. The polymer dispersed liquid crystal layer comprises liquid crystals, linear polyurethane acrylate and functionalized polysilsesquioxane, the functionalized polysilsesquioxane accounts for 10%-20% of the total mass of the linear polyurethane acrylate and the functionalized polysilsesquioxane, and the bendable base material layer is made of a polymer with polar groups. The first adhesion promoting layer is made of linear polyurethane acrylate, the second adhesion promoting layer is composed of polyester polyol and cellulose, and the mass fraction of the cellulose is 15%-20%. The dimming film provided by the invention has relatively good foldability.

The utility model discloses a butt joint device for large steel pipes with different diameters, and relates to the technical field of bridge steel pipe connection. Comprising an annular groove formed close to the butt joint end of a steel pipe, a sleeve column is installed on the annular groove, a fixing piece used for limiting the sleeve column is arranged on the side, away from the butt joint end, of the sleeve column, a flange plate is fixed to the side, facing the butt joint end, of the sleeve column, and an abutting piece is fixed to the end, facing the butt joint end, of the steel pipe. The side, facing the butt joint end, of the flange plate is provided with an attaching concave ring matched with the abutting piece. Through the arrangement of the flange plate, the fixing piece and the like, in the high-altitude steel pipe butt joint construction process, installation is easy, meanwhile, construction safety is guaranteed, compared with a traditional welding mode, the connecting mode can guarantee connecting precision to a certain degree, use of a large number of welding materials can be reduced, and cost is reduced. Under the condition that the installation steps are simplified, the cost can be high, and the connection strength between the steel pipes with different pipe diameters can be maintained at the same time.

The invention discloses a cover plate assembly and a battery, and relates to the technical field of batteries, the cover plate assembly comprises a pole, a cover plate and a pressing plate, the cover plate is provided with a mounting hole penetrating along the thickness direction of the cover plate, the pole is arranged in the mounting hole in a penetrating manner, the pressing plate sleeves the pole, the pole comprises a flanging part, the flanging part is located on the inner side of the cover plate, and the pressing plate is located on the inner side of the cover plate. The projection of the flanging part on the plane where the cover plate is located at least partially coincides with the projection of the pressing plate on the plane where the cover plate is located. Moreover, the specifications of the pressing plate and the flanging part are matched with each other, so that the pressing plate and the flanging part are matched with each other, the cover plate assembly is prevented from forming a structural weak point, enough welding space between the pressing plate and the pole can be ensured, the connection strength between the pressing plate and the pole is ensured, and the reliability of the cover plate assembly is improved. The flanging part can be prevented from excessively occupying the internal space of the battery, and the space utilization rate of the battery cell is ensured.

The invention relates to the field of batteries, and provides a battery clamp and a preparation method thereof. The battery clamp comprises a first clamping plate, and a first clamping groove is formed in the first clamping plate; a second clamping groove is formed in the second clamping plate, and under the condition that the first clamping plate is installed on the second clamping plate, the first clamping groove and the second clamping groove form a clamping space used for clamping the outer circle face of the battery; the telescopic supporting rod is connected to the first clamping plate or the second clamping plate. The battery clamp can effectively clamp the outer circular surface of the battery and prevent the battery from moving or sliding off in the operation process, so that the stability and the safety of operation are ensured. And the design of the clamping groove fully considers the protection of the battery, so that the damage to the battery caused by too large clamping force of a traditional clamp is avoided, the service life of the battery is prolonged, and the maintenance cost is reduced.

The invention relates to the technical field of pipe fitting machining and manufacturing, and particularly provides a geothermal energy connecting pipeline positioning and machining device. Comprising a main machine frame, two inner supporting end clamping mechanisms which are horizontally and symmetrically arranged and used for clamping and positioning the two ends of a pipe fitting in a matched mode are horizontally installed on the main machine frame, and the two inner supporting end clamping mechanisms can drive the pipe fitting to rotate; a plurality of machining execution assemblies which are sequentially distributed in the opposite arrangement direction of the two inner supporting end clamping mechanisms are assembled on the main machine frame, and the distance between the machining execution assemblies is adjustable. According to the device, an existing machining mode is changed, the machining convenience, the machining positioning precision and the overall machining efficiency are improved, the machining forming quality is improved, and then the connecting strength and the sealing performance of the branch pipe connector of the water segregator pipe are guaranteed.

The invention belongs to the technical field of electronic equipment, and particularly relates to a force feedback device and a handle, the force feedback device comprises a shell, a pressing rod assembly, an elastic piece and a driving assembly, the pressing rod assembly comprises a push rod and a sliding sleeve, the sliding sleeve is arranged in the shell, and one end of the push rod is inserted into the center of the sliding sleeve and is in threaded transmission with the sliding sleeve; one end of the push rod extends out of the shell to drive the sliding sleeve to move in the axial direction of the push rod; the elastic piece sleeves one end, extending out of the shell, of the push rod, one end of the elastic piece is connected with the shell, the other end of the elastic piece is connected with the push rod, and the elastic piece is extruded in the axial movement process of the push rod and provides elastic force; the driving assembly is in transmission connection with the push rod and drives the push rod to rotate. According to the force feedback device, the elastic piece is arranged on the force feedback device, so that the force feedback device and the trigger button can be connected into a whole, and the function of the handle is guaranteed.

The invention relates to the technical field of iron core production, in particular to a self-adhesive riveting-point-free iron core and a production process thereof, and the production process comprises the following steps: pre-determining the position of a silicon steel sheet on a steel strip with a self-adhesive coating; stamping the outer sides of the silicon steel sheets to form the silicon steel sheets and two frames; performing semi-shearing stamping on the joints between the silicon steel sheets and the frame to enable the silicon steel sheets to be punched out of the frame by a certain distance; shaping to enable the silicon steel sheets and the frame to be in the same plane; cutting off the steel belt to enable the silicon steel sheets and the frame to form independent sheet bodies; a plurality of sheet bodies are stacked together, buckling points are punched on the frame, and the sheet bodies are stacked and riveted into a whole through the buckling points; heating the plurality of sheet bodies to melt the self-adhesive coatings, cooling the sheet bodies, and curing the self-adhesive coatings to fix the plurality of stacked silicon steel sheets together; fixing the silicon steel sheets, and separating the frame from the silicon steel sheets to obtain iron core units; the multiple iron core units are arranged in the circumferential direction, the adjacent iron core units are connected in a clamped mode, and a complete iron core is formed.

The utility model discloses an assembly type column structure. Comprising a lower prefabricated column, prefabricated beams arranged on the two sides of the top of the lower prefabricated column, a cast-in-place layer arranged between the lower prefabricated column and the two prefabricated beams, lower connecting steel bars arranged on the lower prefabricated column in an embedded mode, an upper prefabricated column arranged on the top of the cast-in-place layer and a grouting assembly arranged in the upper prefabricated column. Grouting cavities are formed in the positions, corresponding to the upper connecting steel bars or the lower connecting steel bars, of the bottom of the upper prefabricated column, and one ends of the lower connecting steel bars penetrate through the cast-in-place layer to be located in the grouting cavities. The grouting assembly comprises a grouting pipe, an exhaust pipe and a grout outlet pipe which are communicated with the grouting cavity, a sealing rubber plug is arranged on the grout outlet pipe, and the grouting cavity is filled with grout through the grouting pipe. The structure has the advantages of good connection stability and reliability, strong exhaust capacity during grouting, high connection quality, simple and compact overall structure, convenience in construction operation and wide application prospect.

The utility model discloses a vehicle shooting device, which relates to the technical field of shooting equipment and comprises a hanging rod, a mounting mechanism and a supporting mechanism. The hanging rod extends in the vertical direction, and the length of the hanging rod is adjustable. The mounting mechanism comprises a mounting arm and a cradle head frame, the mounting arm extends in the radial direction of the hanging rod, the mounting arm is movably arranged on the hanging rod in the vertical direction, the cradle head frame is movably arranged on the mounting arm in the extending direction of the mounting arm, and the cradle head frame is used for detachably mounting the shooting device; the supporting mechanism comprises two first supporting assemblies and a second supporting assembly, the two first supporting assemblies are arranged at the upper end and the lower end of the hanging rod correspondingly, and the second supporting assembly is arranged at the end, away from the hanging rod, of the mounting arm; according to the technical scheme provided by the utility model, a photographer can shoot conveniently.

The invention provides a liquid cooling system and a battery pack, the liquid cooling system at least comprises a liquid cooling assembly, the liquid cooling assembly is used for carrying out liquid cooling on a battery cell group, the liquid cooling assembly comprises a liquid cooling plate and a plastic current collecting piece, the liquid cooling plate is arranged on the side surface of the battery cell group, the liquid cooling plate is hollow, and a liquid cooling flow channel is formed in the liquid cooling plate; a liquid inlet communicated with one end of the liquid cooling flow channel and a liquid outlet communicated with the other end of the liquid cooling flow channel are formed in the liquid cooling plate; the plastic flow collecting piece is formed on the liquid cooling plate in an injection molding mode, the plastic flow collecting piece and the liquid cooling plate are integrally arranged, the plastic flow collecting piece comprises a liquid inlet flow channel and a liquid outlet flow channel, the liquid inlet flow channel is used for communicating a liquid inlet and a liquid inlet pipeline of the liquid cooling plate, and the liquid outlet flow channel is used for communicating a liquid outlet and a liquid outlet pipeline of the liquid cooling plate.

The utility model provides a bridge anti-loosening connecting assembly convenient to install, belongs to the technical field of bridge construction, and aims to solve the problem that in the prior art, a threaded sleeve and a reinforcing steel bar can be connected only after sealant is uniformly smeared by workers, and the operation steps are more. Comprising a connecting sleeve body, a threaded groove, a sealant groove, a gluing limiting piece, a connecting auxiliary mechanism and an anti-loosening gluing mechanism. The two sets of threaded grooves are formed in the left side and the right side of the interior of the connecting sleeve body correspondingly. The sealant grooves are formed in the middle positions in the connecting sleeve main body respectively; the number of the gluing limiting pieces is two, and the two gluing limiting pieces are fixedly connected to the periphery of the connecting sleeve body. The connecting auxiliary mechanism is arranged on the periphery of the connecting sleeve main body; and the anti-loosening gluing mechanism is arranged in the connecting sleeve main body, so that the operation steps of workers are reduced, the connecting efficiency of the bridge reinforcing steel bars is improved, and the construction progress of a bridge is accelerated.

The invention relates to the technical field of semiconductors, in particular to a power semiconductor manufacturing method, which comprises the following steps of: S100, bonding a pin frame on a DBC (Direct Bonding Copper) board by utilizing ultrasonic energy of an ultrasonic terminal bonding machine; a plurality of pins are arranged on the pin frame; s200, carrying out a push-pull force test on the DBC board; s300, carrying out static electricity removal and purging treatment on the DBC board; s400, mounting a plurality of chips on the DBC board, and bonding metal wires between the DBC board and the chips and between the chips to form electric connection between the DBC board and the chips and electric connection between the chips; s500, performing glue pouring treatment on the chip and the metal wire on the DBC board, and performing curing treatment on the DBC board; and S600, performing rib cutting treatment on the DBC board. By adopting the scheme, the influence of thermal stress generated by high temperature during chip welding on the pin bonding area can be avoided, and the product power pin bonding yield is improved.

A detachable electromagnetic heating mold for in-situ curing of composite materials, the present invention relates to an electromagnetic heating mold, the present invention is to solve the problems of uneven heating temperature control, low efficiency and potential safety hazards in the mold in the prior art, and to realize the winding in-situ curing molding process of pressure vessel-shaped products, it includes a spindle clamping end, a mold shell and an electromagnetic coil mandrel; one end of the mold shell is fixedly connected to the spindle clamping end, the fixed end of the electromagnetic coil mandrel is fixedly connected to the other end of the mold shell, and the heating part of the electromagnetic coil mandrel is inserted in the mold shell. The present invention belongs to the field of composite material processing.

The invention provides a mobile phone protection shell integrating an outer layer bottom plate and a full-wrapping air bag lining, and aims to provide a more comprehensive, safe and attractive mobile phone protection scheme for a user. The outer layer bottom plate of the mobile phone shell can be made of a high-transparency acrylic plate, so that the mobile phone shell has excellent scratch resistance and high transparency; and certain impact resistance is provided while the attractiveness of the mobile phone is kept. A full-wrapping air bag lining is designed in the shell, is made of high-elasticity and compression-resistant TPU or EVA foam materials and is firmly combined to the inner side of the shell through the high-frequency bonding technology, seamless connection is formed, and it is ensured that a mobile phone is wrapped in all directions. When the mobile phone shell falls off, the full-wrapping air bag lining can rapidly deform and absorb impact energy, damage to a mobile phone is effectively reduced, and perfect combination of high-strength protection and good buffering performance is achieved.

The invention belongs to the technical field of building engineering, and discloses a fabricated building reverse construction method and a fabricated underground building. The fabricated building reverse construction method comprises the steps that S1, a plurality of prefabricated middle stand columns are connected through inter-column connecting structures, column end connecting structures are pre-buried at the ends of the prefabricated middle stand columns on the bottommost layer, and the prefabricated middle stand columns on the bottommost layer are connected with a cast-in-place pile reinforcement cage; s2, a pile hole is drilled to the designated depth, a cast-in-situ bored pile is poured to a cast-in-situ pile reinforcement cage to the bottom of the bottom plate structure, and the multiple prefabricated middle stand columns, the inter-column connecting structures between every two adjacent prefabricated middle stand columns, the column end connecting structures and the cast-in-situ bored pile are connected into an integrated supporting column structure; s3, side walls are constructed; s4, constructing a middle layer; s6, the step S5 is repeated until all the middle layers are constructed; and S7, a bottom layer is constructed. According to the fabricated underground building, prefabrication of building components is achieved, the construction time is greatly shortened, and the construction efficiency is improved.

The utility model relates to the technical field of building engineering construction, and particularly provides a good-quality formwork for a silo slip form. The template comprises an inner sliding and lifting template and an outer sliding and lifting template, dovetail grooves are formed in one side of the inner sliding and lifting template and one side of the outer sliding and lifting template respectively, a plurality of inner wall plates are arranged in the dovetail grooves in a clamped and sliding mode, each inner wall plate is of an arc-shaped structure, the inner wall plates abut against one another, and the inner wall plates are connected with the dovetail grooves in a clamped and sliding mode. Due to the arrangement of the inner sliding and lifting formworks, the outer sliding and lifting formworks and the inner wall plate, when sliding and lifting are not smooth due to expansion of concrete, a constructor can easily adjust the position of the limiting plate on the guide block, and rapid unlocking of the inner wall plate and the inner sliding and lifting formworks is achieved; the inner wall plate can be conveniently taken down and reinstalled by a constructor so as to adapt to the height change in the sliding and lifting process, the operation difficulty is reduced, and meanwhile the construction safety and quality are guaranteed.

The utility model relates to the technical field of elevators, in particular to a car roof guardrail fixed through buckles, which comprises a rear guardrail, and the rear guardrail is provided with a first vertical column which is vertically arranged; the side guardrails are vertically arranged on the side faces of the rear guardrails, and the side guardrails are provided with second stand columns attached to the first stand columns; the buckle assembly comprises a fixing piece and a fixing piece, the two ends of the fixing piece extend towards the fixing piece to form first clamping parts, the two ends of the fixing piece extend towards the fixing piece to form second clamping parts, and mounting holes are formed in the first clamping parts and the second clamping parts; in the assembling state, external bolts and nuts are matched with the mounting holes of the fixing pieces and the mounting holes of the fixing pieces to lock the fixing pieces and the fixing pieces, the two first clamping parts of the fixing pieces can clamp the side guardrails and the rear guardrails to prevent looseness, and the connecting strength between the side guardrails and the rear guardrails is guaranteed; punching and welding work is not needed, assembling is easy and convenient, and the problem that in the prior art, welding and punching are needed, and assembling is troublesome is solved.

The utility model relates to a wind power blade tip test section connecting structure which comprises a structural layer and a pouring layer, the structural layer comprises a bolt sleeve, a glass fiber reinforced plastic wedge-shaped strip, a PVC bevel angle, glass fiber cloth and a blade tip shell, and the pouring layer comprises a glue injection pipeline, a glue injection opening and a composite flow guide net. Glass fabric located on the inner side is laid on the outer side of the blade tip shell, and a core material, a bolt sleeve and a glass fiber reinforced plastic wedge-shaped strip are arranged on the outer side of the glass fabric located on the inner side. Vacuum infusion forming is adopted, the resin wettability is good, the cloth layer infusion quality of the connecting position is high, bolt sleeves are evenly arranged, and even stress is guaranteed.

The invention provides a connecting wire harness for a vehicle and a vehicle, and relates to the technical field of automobile wire harnesses, the connecting wire harness for the vehicle comprises a flat main wire formed by an FFC or an FPC, a part of the area of the flat main wire is divided into a plurality of flat branch wires, the plurality of flat branch wires are folded towards one side of the flat main wire, and the flat main wire is connected with the FFC or the FPC. One end of each flat wire harness is provided with a connector used for being connected with an electric appliance assembly in an automobile, and the other end of each flat wire harness is connected with the corresponding flat branch wire. According to the connecting wire harness for the vehicle, the problems that in the prior art, wires on the interior trim of the vehicle roof are difficult to arrange, the weight of the wire harness is large, and the gluing amount is large are solved.

The utility model discloses an integrally cast axle housing assembly, which belongs to the technical field of axle housing assemblies and comprises an axle housing body, vertical brake bottom plates are integrally cast and formed on outer rings at two ends of the axle housing body, and annular reinforcing ribs corresponding to the brake bottom plates are integrally cast and formed on inner rings at two ends of the axle housing body; half-shaft sleeves are integrally formed at the two ends of the axle housing body in a casting mode. The axle housing body, the axle shaft sleeve and the brake bottom plate are integrally cast and formed, the connecting position of the brake bottom plate is structurally reinforced through the annular reinforcing rib corresponding to the brake bottom plate, the connecting strength of the brake bottom plate is guaranteed, the purposes of reducing the weight and the cost of the whole axle housing assembly can be achieved, the risk of open welding of welding seams and oil leakage is effectively avoided, and the service life of the axle housing assembly is prolonged. And light weight of the whole bridge is facilitated. The overall structure is simple, implementation is easy, and practicability is good.

The invention discloses a semiconductor packaging structure and a forming method thereof, and the forming method comprises the steps: providing a first carrier plate, bonding an upper insulating layer of a bridging chip on the upper surface of the first carrier plate, and forming a first plastic packaging layer which covers the upper surface of the first carrier plate and the bridging chip; the first plastic packaging layer and the lower insulating layer are thinned, a first rewiring layer is formed on the surface of the thinned first plastic packaging layer and the surface of the thinned lower insulating layer, and the process for forming the first rewiring layer comprises an electroplating process; the upper insulating layer and the first plastic packaging layer are thinned, a second rewiring layer is formed on the surface of the thinned upper insulating layer and the surface of the thinned first plastic packaging layer, and the process for forming the second rewiring layer comprises an electroplating process; and providing a semiconductor chip, mounting the semiconductor chip on the upper surface of the second rewiring layer, and electrically connecting the semiconductor chip with the second rewiring layer. According to the method, the connection strength at the connection points can be ensured, and the reliability of the packaging structure is improved.

This utility model relates to the field of milling cutter technology and discloses a milling cutter that is easy to install. It includes a milling cutter shank section, a milling section at the bottom of the shank section, and a composite cylindrical component slidably mounted on the top surface of the shank section. The surface of the composite cylindrical component has friction grooves, and the inner wall of the composite cylindrical component has several positioning holes along its longitudinal direction. This utility model uses the composite cylindrical component, T-slots, positioning holes, composite I-shaped grooves, and limiting components, positioning screw holes, and limiting screws to form an auxiliary structure. After assembly and use based on the structure of the milling cutter shank section, the friction grooves on the surface of the composite cylindrical component effectively ensure the connection strength with the tool holder and the subsequent compressive strength of the cutter. Compared to other complex technical solutions in the prior art, the auxiliary structure and assembly and use of the milling cutter shank section in this application maintain convenient installation and usage conditions.

The straight beam structure air suspension assembly for the new energy heavy duty vehicle comprises a middle beam frame, installation pedals and damping gaskets, a transmission shaft is erected in the middle of the inner side of the middle beam frame, the installation pedals are erected at the two ends of the transmission shaft, and the damping gaskets for damping protection are installed on the outer sides of the joints of the installation pedals and the transmission shaft. And a right assembling base is erected at one end of the middle beam frame, a plurality of connecting holes are formed in the outer wall of the right assembling base, and an anti-skid groove is formed in the inner wall side of the right assembling base. When the straight beam structure air suspension assembly for the new energy heavy-duty vehicle is used, the vehicle frame keel and the air suspension assembly are connected and assembled through the straight beam structure design, and the requirements of subsequent users for separating, overhauling and additionally installing the vehicle frame keel and the air suspension assembly are met.

This utility model discloses a waterproof structure for steel structure exterior wall joints, belonging to the field of steel structure exterior wall waterproofing technology. It includes: multiple sets of exterior wall panels and waterproof components; drainage components for draining rainwater are provided at the intersections of the multiple sets of exterior wall panels; the waterproof components include: mounting seats adapted to fit within the gaps on one side of two sets of exterior wall panels; a fixing mechanism is connected to the inner wall of one side of the mounting seat; a waterproof cover is adapted to fit on the other side of the mounting seat; an installation mechanism is provided between the waterproof cover and the mounting seat; and a sealing mechanism is provided between one side of the mounting seat and one side of the waterproof cover. This utility model, through the coordinated use of the mounting seat, fixing mechanism, waterproof cover, installation mechanism, and sealing mechanism, enables rapid assembly and partial replacement of the mounting seat and waterproof cover, ensuring connection strength while avoiding the maintenance difficulties caused by traditional welding.