119results about How to "Reduce welding" patented technology

The embodiment of the invention relates to the field of photovoltaic technology, and provides a photovoltaic module, the photovoltaic module comprises a battery string, an insulating layer, a bus bar and a conductive bridging part, the battery string comprises a plurality of battery pieces, the back surface of each battery piece is provided with a welding strip, and the plurality of battery pieces are connected in series through the welding strips; the insulating layer is arranged on one side, far away from the battery piece, of the welding strip, and the insulating layer is provided with an avoiding area, so that part of the welding strip is exposed from the avoiding area to form a welding strip exposing part; the bus bar is arranged on one side of the insulating layer away from the solder strip; the conductive bridging part is arranged between the bus bar and the solder strip exposing part, so that the bus bar and the solder strip exposing part are conductively connected through the conductive bridging part. The embodiment of the invention is at least beneficial to improving the maximum output power of the back contact battery assembly.

The invention provides an electric tricycle rear axle welding quality control system and method, and relates to the technical field of welding, a welding seam parameter preprocessing module is used for conducting welding seam analysis on an electric tricycle rear axle, and an initial welding parameter combination is determined; the simulation welding analysis module carries out simulation welding according to the initial welding parameter combination and draws a welding change trend chart; the welding path planning and evaluating module traverses the welding change trend chart to plan a plurality of welding paths and performs welding evaluation to generate a welding state value; the welding defect analysis module performs welding detection and defect analysis according to the welding state value and the welding change trend chart to generate a welding quality score; and the welding parameter optimization module adjusts the initial welding parameter combination according to the welding quality score to generate a welding optimization scheme. The technical problem that the welding quality cannot be effectively controlled due to the fact that the prior art is difficult to adapt to dynamic changes of the welding environment and workpiece conditions is solved, and control over the welding quality of the rear axle is improved.

The embodiment of the invention relates to the field of photovoltaic technology, and provides a photovoltaic module, the photovoltaic module comprises a battery string, an insulating layer and a bus bar, the battery string comprises a plurality of battery pieces, the back surface of each battery piece is provided with a welding strip, and the plurality of battery pieces are connected in series through the welding strips; the insulating layer is arranged on one side, far away from the battery piece, of the welding strip, and the insulating layer is provided with an avoiding area, so that part of the welding strip is exposed from the avoiding area to form a welding strip exposed part; the bus bar is arranged on the side, away from the welding strip, of the insulating layer, the bus bar is provided with an abutting part in a protruding mode towards the welding strip exposing part, and the abutting part abuts against the welding strip exposing part so that the bus bar can be conductively connected with the welding strip. The embodiment of the invention is at least beneficial to improving the maximum output power of the back contact battery assembly.

The invention relates to the field of coil welding, in particular to welding equipment for inductance coil machining, which comprises a welding table, a fixed seat, a lifting assembly and the like, a fixing base is slidably connected to the welding table. A first placing block for placing a coil is arranged on the fixed seat; a limiting block is arranged on the first placing block; a second placing block for placing a capacitor is arranged on the fixed seat; a lifting assembly is installed on the welding table, and the fixing base is connected with the lifting assembly. According to the invention, a copper wire of a coil is extruded through the roller, so that the copper wire in an irregular twisted form is converted into a straight state to be lapped on the upper plane of the fixed seat, and the copper wire is ensured to be in more sufficient and uniform contact with a capacitor pin, so that a firmer and more reliable welding spot is formed, the risks of insufficient welding and falling are reduced, and the production efficiency is improved. And the copper wire is limited and fixed through the limiting groove, the copper wire is shaped, so that the copper wire is kept in a straight state, the copper wire is prevented from rebounding and gradually recovering the shape, and the subsequent welding effect is improved.

The invention belongs to the technical field of sensors, and particularly relates to a passive NFC aircraft tire temperature and pressure composite sensor system which comprises a filler neck, a rear cover, a pressure core, a conversion circuit board, a conditioning circuit board assembly and a tag antenna assembly. The filler neck is a two-stage step column; the small-diameter end of the filler neck is provided with an air inlet, and the large-diameter end is provided with a cavity; the pressure core body is arranged in the air inlet hole; the pressure core body is connected with the conversion circuit board; the conversion circuit board is connected with the conditioning circuit board assembly; the conditioning circuit board assembly is fixed on the step surface of the cavity at the large-diameter end of the filler neck through a supporting screw; the tag antenna assembly is installed on the supporting screws through the fixing screws. The rear cover is screwed at the large-diameter end of the filler neck; the small-diameter end of the filler neck is connected with a tire through external threads.

The utility model discloses an electrode assembly and a battery monomer with the electrode assembly. The electrode assembly comprises an electrode assembly body and an electrode assembly, the tab is arranged on at least one side of the pole group body in the first direction, the tab comprises a plurality of sub-tabs, the plurality of sub-tabs are sequentially arranged in the thickness direction of the pole group body, and in the thickness direction of the pole group body, every two adjacent sub-tabs are arranged in a staggered manner in the second direction and are connected in a lap joint manner; and the first direction, the second direction and the thickness direction of the pole group body are mutually vertical in pairs. According to the electrode assembly disclosed by the utility model, the thickness and the number of layers of the ultrasonic welding tab pieces can be reduced, so that the probability of pseudo soldering or solder skips between the tab pieces is reduced, and the yield of the electrode assembly is improved.

The embodiment of the invention provides an integrated high-strength steel rolling battery pack shell, and relates to the field of batteries. The integrated high-strength steel rolling battery pack shell comprises a bottom protection plate, B-shaped beams are welded to the long edges of the two sides of the bottom protection plate, square-shaped beams are welded to the short edges of the two sides of the bottom protection plate, and the two B-shaped beams and the two square-shaped beams are welded to the bottom protection plate. The first steel plate and the second steel plate are rolled and welded at the same time, the left and right B-shaped beams are manufactured, the left and right B-shaped beams are put on the second rolling line again, the front and rear square-shaped beams are formed, the B-shaped beams and the square-shaped beams are welded to the bottom protection plate after the tool is clamped, the integrated battery pack shell is obtained, and the integrated battery pack shell is manufactured through the rolling and welding process. A plurality of independent parts are integrated into an integral frame, so that the production process is simplified, the number of the parts is reduced, the whole device has few parts, the structure is simple, the cost is reduced, and compared with a traditional battery pack shell, welding seams are reduced, the airtight reliability is high, and the integration completeness is high.

The invention relates to the technical field of automatic welding of metal furniture, and discloses an automatic welding method for metal furniture. The cutting side faces are flexibly selected to meet different machining requirements, the design flexibility is enhanced, and the machining efficiency and accuracy are improved. A reference side face is set to ensure accurate cutting, errors are reduced, and a solid foundation is laid for welding assembly. Intersected edges are accurately compared, cutting points are positioned, it is ensured that the cutting shape conforms to design, and structural stability is improved. The vertex position is defined, the cutting boundary is defined, a clear cutting path is formed, and the cutting accuracy is improved. The sections of the pipes are spliced and welded after cutting, so that strong connection is realized, and the structural integrity and bearing capacity are enhanced. Tangent plane coincidence is ensured, the welding quality is improved, and the connection firmness is enhanced. And measuring and adjusting after welding to ensure that the product quality reaches the standard. The process not only improves the production efficiency, but also ensures the accuracy, stability and high quality of the product.

The invention discloses a 3D printing integrated injector. An ignition channel penetrates through a head cavity A and a head cavity B and is located between the head cavity A and the head cavity B; the nozzles A and the nozzles B are of an integrated coaxial structure and are evenly distributed on the periphery of the ignition channel in the circumferential direction. Wherein the nozzle A comprises inlet holes and a straight channel, the inlet holes are located in the head cavity A, and at least four inlet holes are evenly distributed in the circumferential direction and communicate with the straight channel in the center; the nozzle B is located in the head cavity B and comprises a flow equalizing ring cavity, a contraction channel and an outlet ring seam; the overall appearance section of the flow equalizing ring cavity and the contraction channel is in a circular truncated cone shape, the front end of the contraction channel is an outlet circular seam formed between the side wall of the outlet end of the straight channel of the nozzle A and the bottom B, and a mixing area is formed between the outlet end of the straight channel of the nozzle A and the bottom B; an annular cavity is formed between the outer walls of the head cavity A and the head cavity B, namely the annular wall with the flow equalizing hole and the outer wall of the cavity, an inlet is formed in the outer wall of the cavity, and the ignition channel, the head cavity A, the head cavity B, the chamber pressure measuring channel, the nozzle A and the nozzle B are integrally printed and formed in a 3D mode.

The invention relates to an X-ray tube anode target disc, a welding structure and a target disc preparation method. The X-ray tube anode target disc comprises graphite, metal and a welding layer used for welding the graphite and the metal. The graphite and the metal are annular, on two opposite surfaces of the graphite and the metal, one surface is provided with a convex block, and the other surface is provided with a groove matched with the convex block; the welding layer comprises a first welding area, a second welding area and a third welding area which take the axis of the target disc as the radial direction of the target disc; the first welding area, the second welding area and the third welding area are arranged in a step shape, and the second welding area is located between the protruding block and the groove. Wherein the thickness of the welding flux in the first welding area is not equal to that of the welding flux in the third welding area. According to the X-ray tube anode target disc, the porosity of the welding layer is low, the welding quality is good, the connecting strength between graphite and metal is high, the connecting stability is good, and the using working condition requirements of the X-ray tube anode target disc at the high temperature and the high rotating frequency can be effectively met.

The high-precision four-station rotor welding machine comprises a working table, a motor is installed in the working table, and the tail end of an output shaft of the motor penetrates through the working table to be connected with a rotating table; evaluation assemblies are symmetrically arranged on the surface of the workbench, a jig assembly is arranged on the surface of the rotating table, a step block is connected to the surface of the jig assembly, and a feeding transmission belt and a discharging transmission belt are symmetrically arranged on the surface of the workbench. According to the four-station rotor welding machine, a plurality of assemblies are arranged to work mutually and conduct continuous operation, the positioning precision of products is improved and defect detection is achieved through sensors, and meanwhile disordered feeding and ordered discharging can be achieved through a feeding transmission belt, a discharging transmission belt and a mechanical arm CCD; the grating ruler can press the workpieces, meanwhile, the problem that the thicknesses of supplied materials are not equal can be solved, meanwhile, the electric cylinder can press the tool, weld joints between the workpieces are reduced, and meanwhile the problems of welding protrusions and burrs are reduced.

The utility model discloses an aluminum alloy girder of a container transportation semitrailer. The aluminum alloy girder comprises a front section structure, a gooseneck structure and a rear section structure, the front section structure and the rear section structure are I-shaped aluminum structures; the gooseneck structure comprises a gooseneck upper wing plate structure and a gooseneck lower wing plate structure; the gooseneck upper wing plate structure comprises an upper wing plate front end part, an upper wing plate arc-shaped part and an upper wing plate rear end part which are connected in sequence; the top surface of the front end part of the upper wing plate is propped against the bottom surface of the front-section upper wing plate, and the bottom surface of the rear end part of the upper wing plate is propped against the top surface of the rear-end upper wing plate; the gooseneck lower wing plate structure comprises a lower wing plate front end part, a lower wing plate arc-shaped part and a lower wing plate rear end part which are connected in sequence; the top face of the front end of the lower wing plate abuts against the bottom face of the front section lower wing plate, and the top face of the rear end of the lower wing plate abuts against the top face of the rear end lower wing plate. Structural structure defects and deformation caused by welding can be reduced, the welding workload is reduced, and compared with a traditional girder, the girder is more reliable and more environmentally friendly.

The utility model provides an integrated laser welding head integrating a scroll and wire feeding. The integrated laser welding head comprises a main support, a light path unit, a scroll unit, a wire feeding unit and an air blowing unit. The whole main support is of a hollow structure and comprises a back plate, a front panel, a bottom plate and side plates which are fixedly connected with one another, the back plate is connected with the laser welding machine, the top of the main support is open, and an opening is formed in the bottom plate; the scroll unit is integrally mounted on the front panel and comprises a scroll body and a scroll bracket, the scroll bracket is fixedly connected with the front panel, a rotating shaft is arranged on the scroll bracket, and the scroll body is mounted on the rotating shaft and can rotate; in the utility model, the scroll unit is directly integrated on the welding head, so that the distance between the scroll and the wire feeding device is the shortest, the accumulated torsional stress of the welding wire in the conveying process is the minimum, the poor welding caused by the over-limit torsional stress is avoided, and the welding stability is improved.

The invention provides a full-automatic pole-changing dust remover of a shield tunneling machine, which comprises a dust removal box, an inlet, a discharge port, an absorption device, a discharge device, a vibration device, a sewage discharge channel, a direct-current high-voltage dust removal device and a filter device, and the inlet and the discharge port are formed in the two side surfaces of the dust removal box along the length direction; an absorption device is arranged in the inlet; a discharge device is arranged in the discharge port; vibration devices are arranged on the upper end surfaces of the dedusting boxes; a sewage discharge channel is formed in the bottom in the dust removal box; a direct-current high-voltage dust removal device is arranged in the dust removal box; a filtering device is arranged on one side of the dust removal box along the length; a reciprocating mechanism is arranged on one side face of the dust removal box in the length direction, through reciprocating rotation of a first nozzle and a second nozzle, the two sides of the dust removal plate can be completely flushed, the flushing effect is effectively improved, it is guaranteed that the dust removal plate normally adsorbs dust, the working efficiency is improved, and the working function is improved.

The utility model discloses a vehicle front end connecting module and vehicle with it, include: left front connecting beam and right front connecting beam, left front connecting beam and right front connecting beam are suitable for installing in the frame and along the width direction arrangement of frame, left front connecting beam front end and the front end of right front connecting beam are suitable for installing front anti -collision pole, left front connecting beam front end and right front connecting beam front end between suitable for accommodating cooling module, front crossbeam subassembly, one end of front crossbeam subassembly is connected in left front connecting beam's front end and is connected in the front end of right front connecting beam with another end, strengthen crossbeam, strengthen crossbeam is connected in left front connecting beam and the bottom of right front connecting beam, wherein, left front connecting beam and right front connecting beam and strengthen crossbeam are all castings, and the distance between left front connecting beam front end and right front connecting beam front end is 1050mm~1150mm. According to the vehicle front end connecting module of utility model embodiment, can accommodate greater cooling module, has the advantages such as high integrity, promotes structural strength, light weight.

The application belongs to the technical field of micro-nano optics, and discloses a magnetic control fiber OCT probe and a preparation method thereof, which comprises: a transparent catheter; a single-mode optical fiber arranged in the interior of the transparent catheter; and an optical imaging assembly integrally formed on the end face of the single-mode optical fiber by means of a femtosecond laser two-photon polymerization technology, wherein the optical imaging assembly comprises a stator, a rotor and a focusing lens arranged in sequence, one end of the stator away from the rotor is fixedly connected with the single-mode optical fiber, the rotor rotates relative to the stator, one side of the focusing lens is provided with a reflecting surface, the reflecting surface is provided with a magnetic structure, and the magnetic structure is used for driving the rotor to rotate in response to an external magnetic field. The application can significantly reduce the diameter of the probe, improve the lateral resolution, and realize non-contact far-field magnetic control scanning, thereby directly serving the early diagnosis of microvascular lesions, intraoperative minimally invasive imaging and biological basic research.

This invention discloses a positioning fixture and welding method for welding landscape bridges, mainly relating to the technical field of welding devices. It includes a first base plate and a second base plate, each with several L-shaped blocks. A first sliding rod is slidably connected to each L-shaped block, and several arc-shaped plates are provided at the ends of the first sliding rods. A first spring is provided between the arc-shaped plates and the L-shaped blocks. It also includes fixing plates symmetrically arranged at both ends of the first base plate and used in conjunction with the second base plate. A first sliding plate and a second sliding plate are slidably connected to the first and second base plates, respectively. The first and second sliding plates are slidably connected, and a first welding torch is mounted on the first sliding plate. Furthermore, it includes a third sliding plate detachably connected to the first sliding plate, and a second welding torch is mounted on the third sliding plate. The beneficial effects of this invention are: solving the problem of low on-site construction efficiency in existing landscape bridge welding, improving the efficiency and quality of landscape bridge welding, and reducing the labor intensity of workers.

The utility model discloses an L-shaped profile hanging and hoisting device which comprises a hanging arm and a hanging main arm, the hanging main arm is connected to the hanging arm, the end, away from the hanging main arm, of the hanging arm is connected to an upper-layer main deck, a through hole is formed in the hanging main arm, a fastening bolt is connected into the through hole of the hanging main arm in a threaded mode, and the hanging main arm is connected with the hanging main arm. The fastening bolt is connected to the suspension arm so that the suspension main arm can be fixed to the suspension arm, the suspension main arm is connected with a suspension lifting point, a chain block is connected into the suspension lifting point, and the chain block is connected to a lifting point of a lifted object. According to the hanging and hoisting device for the L-shaped section bar, the hanging arms are connected to the upper-layer main deck at intervals, the hanging main arms are connected to the hanging arms respectively, the hanging points are connected to the hanging main arms, and the chain blocks are connected to the hanging points, so that the hanging and hoisting device for the L-shaped section bar is mounted and dismounted through the chain blocks; the fastening bolt is connected to the suspension main arm in a threaded mode, the fastening bolt is connected to the suspension arm, the suspension main arm is stably fixed to the suspension arm, and manpower and material resources are saved.

The invention discloses 5G communication signal inductor machining equipment with a spot welding device, belongs to the technical field of 5G communication signal inductors, and discloses the 5G communication signal inductor machining equipment with the spot welding device. According to the 5G communication signal inductor machining equipment with the spot welding device, a limiting rod is pulled to drive a limiting plate to relieve limiting of a third L-shaped plate, so that the third L-shaped plate is ejected upwards to drive a strip-shaped rod and a sliding rod to be ejected upwards, and two clamping plates are controlled to be close to each other to clamp and automatically fix inductor parts; a rotating handle is rotated to control a sliding block to drive a conductive box, inductor parts in a containing disc and a vertical plate to slide upwards, so that a rack plate is meshed with a first gear, a cam is driven to rotate, and an injection pipe automatically blows away dust on the surfaces of the inductor parts from far to near; and therefore, the beneficial effects of automatic clamping and fixing and automatic dust blowing can be achieved before spot welding is conducted on the inductor part, and the inductor is more stable in the spot welding process.

The present invention provides a jig suitable for power module plug-in and its plug-in process, belonging to the field of power module packaging technology. The jig includes one or more than two groups of positioning assemblies, a tray, and positioning pins, and any group of positioning assemblies is composed of a metal-clad ceramic substrate positioning plate and a signal terminal positioning plate. The jig of the present invention adopts a split structure, which can avoid reprocessing the plug-in jig when plugging in signal terminals with different layouts. It only needs to replace the metal-clad ceramic substrate positioning plate and the signal terminal positioning plate of the plug-in jig, thereby reducing the time and economic cost of customizing the plug-in jig. The plug-in process of the present invention can reduce welding and other processes, will not affect the bonding process after welding, and can be applicable to the plug-in of metal-clad ceramic substrates with different signal terminal distributions, which is conducive to improving production efficiency and reducing the complexity of component replacement.

The invention relates to the technical field of lithium batteries, and discloses a fully-sealed lithium battery structure which comprises a cover plate, a battery cell and a shell, the battery cell is arranged in the shell, the cover plate is connected to the upper end of the shell, an insulating spacer is arranged between the lower end of the battery cell and the shell, a cylindrical hole is formed in the center of the battery cell, a first tab is connected to the inner wall of the battery cell, and a second tab is connected to the outer wall of the battery cell. The bottom of the shell is provided with an anti-explosion nick, the lower end of the shell is connected with a PTC short-circuit protection device, the lower end of the PTC short-circuit protection device is connected with a false cover, the edge of the cover plate and the upper end of the shell are provided with Z-shaped openings, the two Z-shaped openings are matched with each other, and the joint of the cover plate and the shell is sealed through laser welding. By adopting a cooperative structure of the cylindrical hole in the center of the battery cell, the insulating spacer with the annular bulge and the explosion-proof nick at the bottom of the shell, a smooth gas leakage channel is formed, high-pressure gas is ensured to be discharged in time, and the potential safety hazard that the gas leakage channel of the traditional lithium battery is easy to block and easily causes explosion is solved.

The utility model relates to communication oscillator device technical field especially, it is a kind of quincunx die-casting radiation oscillator with polycarbonate encapsulation feeder, it includes oscillator body, two feeders and anti-loosening part. The feeder includes the metal body and fixed seat of special shape, the metal body is matched with the radiation impedance characteristic of oscillator body by the shape structure of special shape. The metal body is integrally formed with multiple fixed seats. One end of anti-loosening part is buckled with the end of feeder installed on oscillator body, and simultaneously buckled with the side of two feeders protruding from oscillator body. Anti-loosening part fixes two feeders on oscillator body, can prevent feeder and oscillator body from loosening and falling when installing oscillator on reflecting plate, and the structure connection is more stable. Anti-loosening part is buckled with oscillator body, can improve the efficiency and precision of assembly. Feeder is integrally formed by metal body and fixed seat encapsulation, saves time and labor cost.

The utility model discloses a CEPS support assembly capable of providing continuous crumple force, relates to the technical field of automobile steering, and aims to solve the problems that in the prior art, an injection molding block is fixedly connected with a mounting support through an injection molding process, the manufacturability is poor, and meanwhile, the continuous crumple force provided by a tearing piece is large in dispersion difference and poor in consistency. A fixing hole is formed in the installation support, first crumple grooves are formed in the middle of the installation support in a mirror image mode, second crumple grooves are formed between the first crumple grooves, first crumple bosses are arranged on the first crumple grooves, second crumple bosses are arranged on the second crumple grooves, an adjusting support is arranged on the installation support, and a through hole is formed in the adjusting support. According to the utility model, the mounting bracket and the adjusting bracket are fixed together through the rivets, so that the processes of welding, injection molding and the like are omitted, and the process is simple; the length and the height of the first crumple boss are changed to change the crumple lasting distance, the crumple peak force and the crumple lasting force.

The present invention discloses a forming die for the upper shell of an automobile battery box, wherein a first stretching die assembly for first stretching a segment with a maximum height portion on the upper shell of the automobile battery box, a second stretching die assembly for second stretching for integrally forming the upper shell of the automobile battery box, and a shaping die assembly for shaping the corners of the formed product to an arc transition are sequentially arranged between the upper die assembly and the lower die assembly, wherein the first upper die of the first stretching die assembly, the second upper die of the second stretching die assembly, and the shaping upper die of the shaping die assembly are all connected to the upper die assembly, and the first lower die of the first stretching die assembly, the second lower die of the second stretching die assembly, and the shaping lower die of the shaping die assembly are all connected to the lower die assembly. Therefore, it greatly improves production efficiency, saves production costs, avoids welding defects, and also avoids the risk of airtight leakage.

This utility model discloses a novel stamped and welded rear subframe, relating to the technical field of automotive chassis structural components. It includes a front tube beam, a rear control arm sleeve, and a suspension sleeve. The front tube beam is welded to the left longitudinal beam, right longitudinal beam, front plate of the rear crossbeam, and rear plate of the rear crossbeam to form a frame structure. At the corners of the frame, left front beam reinforcement plates, right front beam reinforcement plates, left rear beam front reinforcement plates, right rear beam front reinforcement plates, left rear beam rear reinforcement plates, and right rear beam rear reinforcement plates are added. Side reinforcement plates are provided on the outer side of the rear control arm sleeve. These side reinforcement plates adopt a triangular structure and are welded to the front plate of the rear crossbeam, the rear plate of the rear crossbeam, and the right longitudinal beam. The side reinforcement plates extend and are welded onto the right longitudinal beam. The suspension sleeve adopts a flanged structure. This novel stamped and welded rear subframe, employing a novel stamped and welded structure, optimizes the problem of local stress concentration in the mounting brackets when the subframe is subjected to alternating loads, avoiding subframe cracking and failure.

The invention discloses a double-wall pipe centering device which comprises an upper clamp (1), a lower clamp (2), heavy nuts (3), a centering bolt (4) and a connecting nut (5), the upper clamp (1) and the lower clamp (2) are fixed to a double-wall pipe outer pipe (7) through the connecting nut (5), the heavy nuts (3) are symmetrically fixed to lugs of the upper clamp (1) and lugs of the lower clamp (2) respectively, the centering bolt (4) penetrates through the heavy nuts (3), and the upper clamp (1) and the lower clamp (2) are connected through the connecting nut (5). And the extending length can be adjusted through rotation in the heavy nut (3). According to the double-wall pipe centering device, the problems of difficulty in centering between the inner pipe and the outer pipe as well as between the outer pipes and poor concentricity in the double-wall pipe manufacturing period are solved, the double-wall pipe centering device is simple in structural form, convenient to operate and maintain and capable of being repeatedly used, labor hours are saved, the pipeline manufacturing precision is improved, and the risk of pipeline stress concentration is reduced.

The invention relates to the technical field of construction, and discloses a basement exterior wall formwork reinforcing and waterproof construction method under a narrow space condition, which comprises the following steps: S1, planting steel bars on the surfaces: planting steel bars on the surfaces of support piles and meat piles, preparing required materials and tools, determining the positions and the number of the planted steel bars, and marking according to design requirements; s2, net hanging, concrete spraying and leveling are conducted, specifically, materials and equipment needed by concrete spraying are prepared firstly, and then the surfaces of the supporting piles and the surfaces of the meat piles are cleaned; and S3, waterproof coating brushing: firstly, wetting the surface of the base layer by using a proper amount of water without water, then uniformly brushing the waterproof coating from one direction by using a tool, and carrying out supplementary brushing in time. According to outer wall construction, a three-section type water stop screw is adopted, a water swelling strip is pasted to the joint of the three-section type water stop screw and a waterproof roll, 2-3 times of swelling deformation is generated after the water swelling strip encounters water, all irregular surfaces, holes and gaps of joints are filled with the water swelling strip, meanwhile, huge contact pressure is generated, and leakage is thoroughly prevented.

The invention discloses a hydraulic bulging forming method of a reverse double-curvature fairing skin. The hydraulic bulging forming method comprises the following steps: constructing a hydraulic bulging process surface of the fairing skin; determining the size of an unfolded blank; designing a hydraulic bulging die structure of the fairing skin step by step; performing hydraulic bulging; and trimming the appearance. According to the reverse hyperbolic structure of the fairing skin, hydraulic bulging process profiles of different skins with opposite overall forming curvatures are designed, the material plastic deformation area in part hydraulic bulging is enlarged, and the problems that the material surface orange peel defect is serious, and the forming precision is low due to the fact that reverse double-curvature skin conventional drop pressing forming cannot be controlled are solved. And a duralumin material aluminum-clad layer is penetrated, and the surface quality cannot meet the requirements of customers.

The utility model provides a battery shell and a single battery, and the battery shell comprises a bottom shell with an opening end; the cover plate is mounted at the opening end of the bottom shell; one of the open end of the bottom shell and the contour edge of the cover plate is provided with a flanging structure, the other one is provided with an annular plate matched with the flanging structure, and the annular plate extends into the flanging structure and is in close fit with the flanging structure. The annular plate extends into a clamping or inserting assembly structure in the turning plate structure, so that the structural stability of the assembly of the bottom shell and the cover plate can be improved, the step of positioning the bottom shell and the cover plate in the welding process to prevent dislocation can be omitted, and the assembly precision of the cover plate and the bottom shell and the precision of the welded battery shell can be improved; and before welding, the flanging structure can be extruded to enable the annular plate to be fully attached to the flanging structure, so that the possibility of pseudo soldering can be effectively reduced, and the sealing performance of the bottom shell and cover plate connecting structure is improved.