61results about How to "Avoid Welding" patented technology

The application provides a busbar welding device, which comprises a welding bearing table and a welding head. The welding head is arranged above the welding bearing table, and an electromagnetic heating assembly is arranged in the welding head. The welding head is used for pressing a welding wire group at the end of a battery string to a busbar on the welding bearing table, and heating the pressed welding wire group and the busbar through the electromagnetic heating assembly. A protruding part is arranged at the bottom of the welding head, or a protruding part is arranged on the welding bearing table. When the welding head presses the welding wire group at the end of the battery string to the busbar on the welding bearing table, the protruding part is used for bending the welding wire group between the battery piece at the end of the battery string and the bearing surface downward or upward. The busbar welding device provided by the application can bend the welding wire group between the battery piece at the end of the battery string and the bearing surface upward or downward. The bent part of the welding wire group is away from the welding area, so that the potential difference in the welding wire group is reduced, the induced current in the welding wire group is small, and the risk of melting of the welding wire is reduced.

This invention discloses a method and apparatus for testing the coating performance of grid-free solar cells, comprising: acquiring a sample to be tested; the sample to be tested includes a grid-free solar cell, a thin film disposed on at least one side of the grid-free solar cell, and a solder ribbon sandwiched between the grid-free solar cell and the thin film; performing a peel tensile strength test on the thin film and / or a pull-out tensile strength test on the solder ribbon according to the stage state of the sample to be tested; and determining the coating performance of the sample to be tested based on the tensile strength test results. This invention realizes coating performance testing for grid-free solar cell structures, which can effectively avoid the problems of solder ribbon misalignment and incomplete soldering in the subsequent lamination process of grid-free solar cells, and improve the production yield of grid-free solar cells.

The utility model provides a flow guide block, a battery cell module, a battery module and a battery pack. The current guide block is used for realizing connection between a tab (7) and a busbar (8), the current guide block comprises a body (1), the same side of the body (1) is provided with a first electric connection area (2) and a second electric connection area (3), the first electric connection area (2) is configured to be electrically connected with the tab (7), the second electric connection area (3) is configured to be electrically connected with the busbar (8), the height of the first electric connection area (2) is lower than that of the second electric connection area (3), and the height of the second electric connection area (3) is lower than that of the body (1). The height difference between the first electric connection area (2) and the second electric connection area (3) is greater than or equal to the thickness of the tab (7), and the first electric connection area (2) is conductively connected with the second electric connection area (3). According to the current guide block, the phenomenon of insufficient soldering of the tab and the busbar can be effectively avoided, and the welding efficiency of the tab and the busbar is improved.

A formwork reinforcement structure includes: a straight back rib, arranged along a first direction on the outside of the formwork to provide support; and a fastener, clamped onto the straight back rib to form a corner structure, providing support for the formwork. The straight back rib and the fastener are perpendicular to each other. This formwork reinforcement structure, by splicing the straight back rib and the fastener to form a corner structure, avoids welding or bending of the back rib, simplifies construction steps, and reduces the amount of construction work. The design of the fastener clamping onto the straight back rib not only allows the fastener to provide stable support for the formwork but also facilitates the replacement of fasteners of different sizes to adapt to different construction conditions, improving the versatility and flexibility of the formwork reinforcement structure. This invention has a simple processing method, higher precision, better versatility and flexibility, and can effectively reduce construction costs, making it suitable for widespread promotion.

The application provides an automatic welding device and method for processing wiring terminals, and relates to the technical field of automatic welding. The device comprises a rotating disc part, at least two groups of flexible tooling, a conveying assembly and a positioning and welding assembly. According to the application, the first workpiece is flexibly loaded on the rotating disc part and is transferred between the loading station and the welding station by the rotating disc part and the flexible tooling. Since the flexible tooling and the rotating disc part are connected in a floating manner, when the first workpiece is placed in the tooling, the tooling can adapt to the posture and position deviation of the workpiece, thereby effectively compensating for the cumulative error caused by the rotating disc indexing error, the tooling manufacturing tolerance and the workpiece size fluctuation. Compared with the rigid fixed tooling in the prior art, the application avoids the problems of welding point deviation or virtual welding caused by position deviation, and significantly improves the consistency of the welding position and the product yield.

The application belongs to the technical field of battery welding, and discloses a welding device and a welding method for back contact batteries. The welding device for back contact batteries comprises a welding main body, a welding strip conveying unit, a battery piece transplanting unit and a welding unit. The welding main body is provided with a welding heat transfer carrier and a welding strip fixing member. The welding strip conveying unit sends a plurality of parallel welding strips with bus bars at both ends to the welding heat transfer carrier. The welding strip fixing member fixes the bus bars to prevent the welding strips from being straight. The battery piece transplanting unit can grab a plurality of battery pieces and press the back surfaces of the battery pieces to the welding strips on the welding heat transfer carrier. The plurality of battery pieces are arranged in parallel and at intervals along the extension direction of the welding strips. The welding unit is located below the welding heat transfer carrier. The welding unit can move back and forth in the vertical direction to weld the plurality of battery pieces and the plurality of parallel welding strips. The damage and scratches of the welding strips in the accommodating groove can be avoided. The welding rate and the heat dissipation rate of the welding strips are consistent, and false welding or welding separation is avoided.

The utility model relates to the technical field, in particular to a power-assisted arm for taking materials, which comprises a six-axis mechanical arm, a first mounting plate, a second mounting plate, a sucker and the like. A mounting plate I is fixedly connected to the six-axis mechanical arm; a plurality of second mounting plates are fixedly connected to the first mounting plate; and a plurality of suction cups are fixedly connected to each second mounting plate. After the automobile rear roof is taken out of the material vehicle, a motor is controlled to drive a fourth mounting plate and a suction pipe to rotate, the fourth mounting plate and the suction pipe are located under the lower portion of the automobile rear roof, at the moment, the suction pipe is close to the lower portion of the automobile rear roof, and then an external air pump is controlled to be started, so that the suction pipe generates suction force to suck away dust on the lower portion of the automobile rear roof; the dust removal operation is completed in the moving process, so that an independent dust removal station does not need to be arranged for dust removal operation, and the operation efficiency is greatly improved.

The invention provides a fabricated wallboard supporting device and a construction method. The fabricated wallboard supporting device and the construction method are used for supporting prefabricated wallboards in overhead wallboards. The overhead wall plate comprises a prefabricated wall plate; the fabricated wallboard supporting device comprises a bottom supporting assembly, a middle supporting assembly and an upper supporting assembly. The bottom supporting assembly is used for connecting the prefabricated wall panel and the lower cast-in-place beam so as to form a bottom supporting structure for supporting the bottom of the prefabricated wall panel; the middle supporting assembly is used for connecting the prefabricated wall panel with the prefabricated column so as to form a middle supporting structure for supporting the middle part of the prefabricated wall panel; the upper supporting assembly is used for connecting the prefabricated wall panel and the upper cast-in-place beam so as to form an upper supporting structure for supporting the upper portion of the prefabricated wall panel. By means of the method, + / -10 mm error self-adaptive positioning of the wallboard is achieved, meanwhile, welding of embedded steel plates, lap joint of steel beams or additional pouring of temporary foundations are avoided, and the construction efficiency and the repeated utilization rate of the device are improved.

This utility model belongs to the field of ultrasonic welding technology, specifically relating to an ultrasonic rolling welding fixture for clamping and positioning a battery cell assembly so that the battery cell tabs are located between the upper and lower welding heads of the welding machine. The fixture includes a base plate, a support mechanism, a lateral movement mechanism, a lifting mechanism, and a positioning mechanism. The lateral movement mechanism is used to adjust the horizontal position of the battery cell assembly, the lifting mechanism is used to adjust the height of the battery cell assembly, and the positioning mechanism is provided on the lifting mechanism to position the battery cell assembly so that the upper and lower welding heads can perform rolling welding on the battery cell tabs. This utility model controls the movement of the battery cell assembly through the lateral movement mechanism, ensuring that the battery cell tabs move synchronously with the upper and lower welding heads during the rolling welding process. This ensures that the weld marks on the tabs remain uniform and avoids incomplete or over-welded welds.

This utility model belongs to the technical field of duct reinforcement structure, and discloses a reinforcing support structure for a smoke-proof and exhaust composite duct. It includes a support beam, with a duct fixedly connected to its lower surface. The lower surface of the support beam has a slot with insertion holes. An installation block is installed within the slot. A reinforcing beam is fixedly connected to the lower surface of the installation block, and an installation beam is fixedly connected to the lower surface of the reinforcing beam. The installation beam has a slot with a connecting beam installed within it, and a second bolt is installed on the installation beam. Through the cooperation of the installation beam, slot, connecting beam, and second bolt, the two reinforcing beams are connected by the connecting beam, improving overall stability and transforming the independent reinforcing beams into a continuous load-bearing system. This increases the equivalent section modulus, significantly improving resistance to bending moment, shear, and torque. The integrated rigidity distribution reduces stress concentration at local weak sections, and the overall frame stiffness transmission path is more uniform.

This invention discloses a detachable lifting clamp fixture for ships. It includes a connecting assembly, a driving assembly, and a suspension assembly. The connecting assembly includes a clamping member and a top support member. The clamping member can clamp and fix the web of a pre-shaped profile, and the top support member can abut against the panel of the pre-shaped profile from top to bottom. The driving assembly is connected to the connecting assembly to drive the connecting assembly to clamp and release the web. The suspension assembly is connected to the connecting assembly and is used to install the lifting clamp. Through the clamping member and the top support member, the pre-shaped profile can be detachably fixed in a clamping manner, and the lifting weight can be applied to both the web and the panel simultaneously. Compared with welding the lifting clamp, this avoids welding work, improves lifting efficiency, reduces lifting costs, and reduces damage to the hull structure. Furthermore, by distributing the weight, it reduces the risk of deformation and damage to the hull structure, especially the panel of the pre-shaped profile.

The present application relates to a kind of battery cover plate and lower plastic plate ultrasonic welding device, comprising: first feeding mechanism, with the conveyer belt of lateral delivery battery cover plate;Second feeding mechanism, with the feeding plate of around center autorotation, and multiple circumferential arrangement of mould plate are disassembled on feeding plate;Second top material plate can pass through mould plate and be lifted from lower to upper on the lower plastic plate stacked on it;The lowermost layer of lower plastic plate is gripped to the battery cover plate on the transfer plate by gripping mechanism;Transfer mechanism, located at the end of conveyer belt, with the transfer plate of up and down and lateral movement, can drive the battery cover plate on support frame lateral movement to welding plate;Ultrasonic welding mechanism, act on the battery cover plate and lower plastic plate on welding plate;The structure of the embodiment is simple and compact, not only realizes lower plastic plate and even feeding battery cover plate matching, avoids operator unable to timely replenish, and also makes it closely adhere between, easy and simple to operate, and better applicability.

The application discloses a welding device for photovoltaic panel processing and relates to the technical field of photovoltaic panel welding.The device comprises an equipment mainframe, a mounting plate fixedly arranged on the equipment mainframe and a welding assembly arranged on the mounting plate; further comprises conveying mechanism one and conveying mechanism two, and the photovoltaic panel is placed on the conveying mechanism one.The device has the advantages that the amount of flux can be automatically adjusted according to the width of the welding rod, and the problems of residue, virtual welding and welding separation can be avoided; meanwhile, the device is provided with an automatic wiping structure, the surface impurities of the welding rod can be removed according to different specifications of the welding rod, the welding joint strength is improved, the double conveying, steering and clamping mechanisms are matched, the precise conveying, positioning and clamping of the photovoltaic panel are realized, the device is suitable for products of different specifications, the defective rate is reduced, the problems of poor adaptability of the traditional equipment, improper flux supply and insufficient cleaning of the welding rod are effectively solved, and the welding quality and production efficiency are greatly improved.

The application discloses an aging strengthening aluminum alloy plate end face friction stir processing method and belongs to the technical field of aluminum alloy thick plate preparation and processing. The solid solution state aging strengthening aluminum alloy plate is butted with a dissimilar plate and is clamped and fixed, and a starting plate and a leading-out plate are arranged on the side of the aging strengthening aluminum alloy plate and the dissimilar plate. A stirring needle is arranged at the bottom end of a stirring head, the distance between the outer edge of the stirring needle and the end face of the aging strengthening aluminum alloy plate is 0.01-5 mm, the stirring head is screwed into the starting plate, the aging strengthening aluminum alloy plate is subjected to underwater friction stir processing treatment or liquid nitrogen cooling friction stir processing treatment, the processed aging strengthening aluminum alloy plate is taken down, and aging treatment is carried out. The application can improve the organization layering phenomenon of the plate through the plastic flow of the material in the plate thickness direction, improve the interlayer bonding strength of the plate, and effectively prevent the end face layering cracking of the plate.

The utility model belongs to soldering machine technical field especially relates to an intelligent automatic soldering machine, through the recessed groove design of clamping rod, ensure two material close adhesion, positioning assembly penetrates the material's middle end through -hole simultaneously, guarantee always aligning when welding, avoid misplacement or false welding, ensure the evenness of welding spot. Clamping motor automatic adjustment clamping degree, rotating assembly takes material rotation at uniform speed, soldering mechanism precision welding, whole process does not need manual intervention, improves production efficiency. In the welding process, the translation component can be real-time fine adjustment position, offset caused by thermal expansion and cold shrinkage of material, ensure the evenness of welding spot.

The present application relates to a kind of terminal laser welding pressing device and pressing force adjusting method, and the pressing device includes base, base is equipped with recess, for accommodating backing plate, the top surface of backing plate is equipped with contact portion;Cover plate is set to the top of base, frame is fixed between cover plate and base, frame is equipped with terminal, terminal is equipped with welding portion, the side edge of welding portion extends with the pressure joint portion outward, and opening is equipped on cover plate;Pressing mechanism is movably set in opening, and pressing mechanism is equipped with pressing block, when pressing mechanism is fastened, the surface of pressure joint portion is pressed by pressing block, to press welding portion to adhere to contact portion, both can avoid the warping of welding portion caused by pressure on the top of frame, and can avoid welding area, will not lead to welding area reduction, pressing block can be uniformly forced to different height or warped terminal, to press welding portion on contact portion, guarantee the consistency of the adhesion of welding portion and backing plate, to improve penetration stability, avoid the generation of burst point and false welding, improve welding quality.

This disclosure provides a method, system, equipment, and storage medium for welding tabs on a lithium-ion cylindrical battery cell, belonging to the field of tab welding technology. The lithium-ion cylindrical battery cell tab welding method includes: determining the welding area of ​​the battery cell tabs and the welding area of ​​the outer casing, wherein the tabs include positive and negative tabs, and the outer casing includes a cap and a shell; applying a solder to the welding area of ​​the outer casing, wherein the area of ​​the solder coating is greater than or equal to the area of ​​the welding area of ​​the tabs, and / or applying solder to the welding area of ​​the tabs, wherein the melting point of the solder is lower than the welding temperature of the tabs; placing the welding area of ​​the tabs on the welding area of ​​the outer casing and pre-pressing it; and welding the welding area of ​​the tabs and the welding area of ​​the outer casing. This disclosure, by coating the welding area of ​​the tabs and / or the outer casing with a layer of low-melting-point solder, ensures that the solder melts during the welding process to enhance the weld connection between the tabs and the outer casing, thereby effectively avoiding the occurrence of poor tab soldering.

This invention discloses a macrochannel submodule packaging fixture. A macrochannel heat dissipation base limiting mechanism is provided on the base plate of an inverted gate-shaped placement rack. Positioning frame limiting mechanisms are provided on the side plates of the placement rack. Pressure rods are fixedly connected to the upper part of the side plates of the placement rack. A row of spring pins is evenly arranged on the pressure rods, and a pressing block is pressed below the spring pins. The pressing block is located above the positioning frame. A macrochannel heat dissipation base and an insulating ceramic sheet with a metal film coated on its surface are placed between the positioning frame and the base plate of the placement rack. The macrochannel heat dissipation base is below the insulating ceramic sheet. The positioning frame includes two metal baffles on the left and right sides. Positioning partitions and metal blocks are spaced apart between the two metal baffles. A submodule receiving cavity is formed between the metal block and the positioning partitions. The shape of the pressing block is the same as the submodule receiving cavity. The submodules are separated by the positioning partitions, preventing mutual compression, accumulation of errors, and deviation of the metal film cutting lines on the chip and the insulating ceramic sheet.

The invention belongs to the technical field of steel structure monitoring, and particularly relates to a rail detection device and method for a ship unloader large arm box girder, and the device comprises a device main body which is integrated with a detection sensor and a processing unit, and further comprises a rail system which is arranged in a box girder and spans a rib partition plate, and comprises a bearing frame and a rail body, the bottom of the track body is connected to the bearing frame, and the bottom of the bearing frame is connected with a horizontal wing of the L-shaped quick release structure. The L-shaped quick release structure comprises two L-shaped adapter plates, and each L-shaped adapter plate is composed of a horizontal wing and a vertical wing; the two L-shaped adapter plates are arranged on the two sides of the rib partition plate in the mode that the vertical wings are opposite. The vertical wings and the rib partition plates which are oppositely arranged are clamped and fixed, and rapid connection between the track system and the box girder rib partition plates is achieved. A modular rib-crossing track system is formed, and non-blind-area and high-precision scanning of a key structure below is achieved.

The utility model provides a kind of limiting device for bus duct production, belong to bus duct production technical field, including bus duct processing platform;Fixed plate is fixed in the top of bus duct processing platform;Stepping motor is fixed in the top of fixed plate;Rotating plate is fixed in the output end of stepping motor;Arc through slot is opened in the top of bus duct processing platform;Arc table is located in the inboard position of rotating plate outer side wall close to arc through slot;Ball screw one rotates in the inside of arc table;Limiting plate one is fixed in the output end of ball screw one by screw;The utility model can be adapted according to the included angle angle required for the butt joint of two bus ducts by the adjustment of relative angle between fixed plate and rotating plate, and under the limit of limiting plate one and limiting plate two, the limiting of two bus ducts in horizontal direction is realized, not only avoid misplacement of welding position, but also ensure the stability of bus duct position when welding.

This utility model discloses a solder mask opening structure for surface mount components, relating to the field of printed circuit board design technology. The solder mask opening structure for surface mount components includes a printed circuit board, which comprises a solder mask layer and a metal layer. A solder mask opening is provided on the solder mask layer. The metal layer is connected to the solder mask layer, and a first pad and a second pad are provided on the side of the metal layer facing the solder mask layer. The technical solution of this utility model fully considers the characteristics of small pad spacing and tiny solder shoulder size of 01005 surface mount components. By eliminating the solder mask bridge between the first and second pads, the first and second pads are fully exposed within the solder mask opening. Furthermore, by controlling the reasonable gap between the outer walls of the first and second pads and the inner wall of the solder mask opening, the solder paste printing and soldering process is optimized, fundamentally solving common problems such as solder balls, tombstoning, and cold solder joints in the SMT soldering process of 01005 surface mount components.

This invention relates to a long-life, lightweight, and high-efficiency microchannel heat exchanger. The structure mainly comprises a cooling medium inflow gas collection hood, a cooled medium inflow gas collection hood, a cooling medium outflow gas collection hood, a cooled medium outflow gas collection hood, a heat exchange plate compartment, a transverse flow heat exchange plate, a longitudinal flow heat exchange plate, a longitudinal flow sealing plate, a longitudinal groove sealing plate, a top heat insulation coordinating pressure plate, a bottom heat insulation coordinating pressure plate, a cover plate, and a clamping frame. The transverse flow heat exchange plate, longitudinal flow heat exchange plate, longitudinal flow sealing plate, longitudinal groove sealing plate, top heat insulation coordinating pressure plate, and bottom heat insulation coordinating pressure plate are located in the heat exchange plate compartment and are locked together using locking screws. This heat exchanger structure not only achieves high-efficiency heat exchange but also features low weight, high structural reliability, and good maintainability.

This invention relates to the field of steel component welding technology, and more particularly to an intelligent steel component welding processing device, comprising a transverse trolley, a pair of rotating bases below the transverse trolley, an automatic welding robotic arm on the side wall of the rotating bases, an outer frame on the inner side of the rotating bases, an inner frame on the inner side of the outer frame, a pair of middle frames on the inner frame, upper rings fixedly connected to both sides of the outer wall of the outer frame, and several upper rotating supports rotatably connected to both sides of the inner wall of the rotating base, with the upper rings rotatably connected between the several upper rotating supports and the rotating base. This invention, through the rotating structure of the outer and inner frames and the dual-station material exchange structure, allows welding and loading / unloading operations to be carried out in parallel. While welding is being performed at one station, the other station simultaneously completes the hoisting and positioning of the component to be processed. Rapid material exchange is achieved through rotational switching, eliminating the waiting gaps of traditional single-station structures, significantly improving equipment utilization and production efficiency, realizing continuous production, and further enhancing production efficiency.

This utility model discloses an NTC thermistor solder paste mounting and positioning structure, relating to the field of SMT technology. It includes an FPC, a pick-and-place machine, an SMT stencil, and an NTC thermistor. The FPC has reference points and NTC pads. The SMT stencil has two circular openings corresponding to the spacing between the two NTC pads. The diameter of the circular openings is larger than the size of the electrodes of the corresponding NTC thermistor. Solder paste is printed onto the NTC pads through the openings in the SMT stencil, forming two circular solder pastes on the NTC pads. The pick-and-place machine is equipped with a vision camera to identify the circular solder pastes. The vision camera uses the circular solder pastes as the mounting reference points for the NTC thermistors, and the two electrodes of the NTC thermistors are mounted onto the two NTC pads. This utility model, by optimizing the solder paste shape and adding solder paste reference point positioning, compensates for printing deviations caused by FPC expansion and contraction, ensures uniform solder distribution on both sides of the NTC, solves the problem of cold solder joints, and improves product reliability.

This utility model relates to a connection structure between steel columns and reinforced concrete beams in an all-indoor steel structure substation, comprising: steel columns, C-shaped steel, reinforced concrete beams, reinforcing bars, and steel plates; at least one C-shaped steel is fixedly connected to the steel column; a steel plate is fixedly connected to one end of the reinforcing bars in the reinforced concrete beam; the steel plate is directly inserted and welded into the channel structure of the C-shaped steel. This utility model avoids damage to the structural steel columns and is also suitable for situations where multiple rows of reinforcing bars are unavoidably arranged in the reinforced concrete beam, making it safe, reliable, and easy to construct.

The application aims at the problem of long process connection time, and provides a highland tunnel waterproof and drainage integrated construction device, relating to the technical field of tunnel waterproof and drainage, comprising: a mobile trolley arranged along the longitudinal direction of the tunnel and provided with a walking mechanism at the bottom; a waterproof operation unit arranged at the front of the mobile trolley and comprising a waterproof plate winch mechanism, a hot melt welding mechanical arm and a grouting assembly, the waterproof plate winch mechanism is used for unwinding the waterproof plate, the hot melt welding mechanical arm is used for fixing the waterproof plate on the surface of the initial support of the tunnel, and the grouting assembly is used for injecting filling slurry between the waterproof plate and the initial support; the application realizes waterproof and drainage integrated construction, so that the waterproof layer and the drainage groove are constructed synchronously and seamlessly overlapped, and the leakage hidden danger of the joint caused by the separation of traditional processes is completely eliminated.

This invention provides a nitrogen-filling fixture for filling a piping assembly with nitrogen. The piping assembly includes a connecting pipe and a pipe, and also includes an outlet connected to the pipe. The nitrogen-filling fixture includes: a nitrogen-filling nozzle for filling the piping assembly with nitrogen; and an inspection component including an interference plate for detection. When the nitrogen-filling fixture is connected to the piping assembly, the nitrogen-filling nozzle is connected to the pipe, and the interference plate is correspondingly positioned with the outlet to detect whether a connecting pipe is present at the outlet. The nitrogen-filling fixture of this invention solves the technical problem in related technologies where elbow positions in components such as air conditioner evaporators are easily assembled incorrectly.

This utility model relates to the field of aluminum tube welding technology, specifically disclosing a flame welding machine for aluminum tubes. The machine includes a flame welding device and a rotating mounting frame. The flame welding device is mounted on a main support and can move up and down to perform flame welding on products at welding positions. The rotating mounting frame is located below the flame welding device and has multiple welding positions arranged in a circular pattern. Products to be welded are positioned in each welding position. After the flame welding device descends to its lowest position, it performs flame welding on the product at the current welding position. After welding is completed, the rotating mounting frame switches to the next welding position for welding, enabling continuous flame welding of multiple products. This device has a compact structure, high operating efficiency, and is beneficial for improving welding consistency and quality. It is suitable for automated welding production scenarios involving mass production of aluminum tube workpieces.

The utility model relates to the technical field of dehydrator frames, in particular to a concrete waste slurry filter pressing dehydrator frame structure which comprises a steel structure longitudinal beam, a triangular reinforcing plate is fixedly installed on the inner wall of the steel structure longitudinal beam in a welded mode, and an installation hole is formed in a frame of the steel structure longitudinal beam. A combined square plate is fixedly installed in the tail end of each steel structure longitudinal beam in a welded mode, a connecting hole is formed in the center of each combined square plate, a steel structure cross beam is installed between the tail ends of the steel structure longitudinal beams, a supporting hole is formed in the tail end of each steel structure cross beam, and a supporting body is arranged on the outer side of the tail end of each steel structure cross beam. After the steel structure longitudinal beam and the steel structure cross beam are installed in a clamped mode, fixing work is carried out subsequently through combination of the supporting columns and the connecting studs, the overall detachable structure is adopted, separation operation during follow-up disassembly is facilitated, and the situation that the steel structure longitudinal beam and the steel structure cross beam are integrally welded together and cannot be separated for repeated use is avoided.

This application relates to a device that can avoid incomplete welds during laser welding of adapter pieces, and pertains to the field of adapter piece manufacturing technology. It includes a worktable with two fixtures for receiving a top cover placed on its surface. A laser is positioned above the fixtures, and a laser displacement sensor for detecting the distance to the top cover is located on one side of the laser. An adjustment groove is formed on the worktable surface, located below the two fixtures, and an adjustment component for adjusting the top cover is installed within the groove. This application effectively addresses the problem of incomplete welds easily occurring during laser welding of adapter pieces, which affects product quality.