59results about How to "Improve Assembly Consistency" patented technology

The application discloses a mechanical clamp jaw with anti-deviation positioning function and relates to the technical field of mechanical clamp jaws.The mechanical clamp jaw comprises two groups of jaw bodies arranged in the interior of an assembly body and used for assisting in clamping assembly of a direct-current contactor.The direct-current contactor comprises an upper shell and a lower shell.The mechanical clamp jaw triggers an inner elastic support structure through a clamping process linkage, can support the inner wall of a weak recessed opening of the upper shell of the direct-current contactor by a support plate when clamping the upper shell, effectively balances clamping extrusion force, restricts the inward collapse and distortion of the opening edge, accurately maintains the original size and shape of the opening, guarantees the basic matching precision of the openings of the upper and lower shells, and automatically completes the accurate alignment and communication of the openings of the upper and lower shells by relying on an anti-deviation positioning assembly to adaptively rotate and correct the lower shell with placement deviation during the assembly butt joint process of the shells, so that the problems of shell clamping deformation, assembly alignment deviation and assembly failure that are prone to occur in traditional clamp jaws are solved.

This utility model relates to the field of marine cables and discloses an airtight structure for marine communication cables, including a connector. Six grooves are formed on the outer surface of the connector at both ends. A slider is slidably connected inside each groove. Pull rings are fixedly connected to the outer surfaces of the six front sliders and the six rear sliders. Connecting cylinders are fixedly connected to the far-away surfaces of the two pull rings. Fixing rings are fixedly connected to the far-away surfaces of the two connecting cylinders. Conical compression rings are fixedly connected to the far-away surfaces and inner rings of the two fixing rings. The progressive compression of the conical compression rings fills the gap between the connector and the cable. The outer diameter of the front end matches the inner diameter of the connector, and the inner diameter of the rear end matches the inner diameter of the connector, forming a tight fit. The conical shape generates radial expansion force during axial movement, effectively enhancing the sealing contact pressure and significantly improving airtightness. Simultaneously, the conical shape can adaptively deform during cable vibration, maintaining a dynamic sealing effect.

The application discloses a kind of full-process supervision systems based on visual offline identification, and the application relates to component production technical field, it is solved that existing technology mostly stays in single size comparison level, lack of the problem of full-process integrated supervision mechanism from model generation, standard matching, automatic splicing to assembly verification, the unified check feature of the present application is constructed by built-in midpoint, plane midpoint and feature vector, corresponding three-dimensional standard model can be matched from model database quickly and accurately, the identification logic is stable, and the anti-interference is strong, effectively avoid the model mismatching problem caused by similar appearance;Through the vector comparison of reference feature and component feature, length difference and included angle calculation, the assembly accuracy can be quantitatively judged, and the assembly standard, correctable and substandard state can be distinguished, the visualization and digitization of assembly quality are realized, the on-site quick error correction and traceability are facilitated, and the assembly reliability and overall production quality of flow line are effectively improved.

This invention discloses a planetary roller screw assembly fixture and method, including a roller axial positioning fixture, a roller circumferential positioning fixture, a lower cage, and an upper cage. During the manufacturing process of the nut and rollers, the correct meshing points are marked. The rollers and nuts are assembled according to the marked positions to determine the circumferential angle of the rollers. The axial position of the rollers is determined by the roller axial positioning fixture, thus roughly determining the spatial position of the rollers. After assembling the first roller, it is rotated to make way for the marked position on the nut, allowing the assembly of the second roller to continue at the marked position until all rollers are assembled. This method solves the problem of random assembly of rollers, improving assembly efficiency and consistency. The roller circumferential positioning fixture, used in conjunction with the lower and upper cages, prevents the rollers from tilting towards the center during rotation and allows for individual position adjustment of one roller.

The invention discloses an oil cooler space ring and a high-precision manufacturing method thereof.The oil cooler space ring comprises an annular body, an oil through hole is formed in the center of the annular body, four positioning bosses are evenly distributed at one end of the annular body in the circumferential direction, and a first sealing groove is formed in the peripheral face of the annular body; a second sealing groove is formed in the inner circumferential face of the annular body, a thread auxiliary groove is formed in the oil through hole, a flow guide groove is formed in the end, away from the positioning boss, of the annular body and distributed in a spiral shape, the positioning boss is used for axial positioning and circumferential positioning of the space ring in the oil cooler, and the assembly precision is guaranteed. The flow guide grooves are formed in the end face of the annular body and distributed in a spiral shape, the number of the flow guide grooves is six, the spiral flow guide grooves can guide a cooling medium to form ordered spiral flow on the surface of the space ring, the contact area of the cooling medium and the space ring is increased, the contact time of the cooling medium and the space ring is prolonged, and therefore the heat exchange efficiency is improved.

The invention discloses an assembly type adjustable positioning tool for a stand column and a corner connecting box and a construction method thereof.The assembly type adjustable positioning tool comprises a supporting platen, the supporting platen is erected on the ground, strip-shaped through holes are formed in the two opposite ends of a tabletop of the supporting platen respectively, and the strip-shaped through holes in the two ends of the supporting platen are arranged in the same direction; the lower portions of the sliding pedestals are adjustably installed in the strip-shaped through holes, one sliding pedestal is arranged in the opposite ends of the two strip-shaped through holes, and the other sliding pedestals are arranged in the opposite ends of the two strip-shaped through holes; the abutting plate is formed on the side portion of the sliding seat, and the abutting plate abuts against the corner connecting box or the stand column; the base plates are arranged between one sliding pedestal and the stand column and between the stand column and the abutting plate; the limiting plate is formed by the limiting plate and the other sliding pedestal at the opposite ends of the two strip-shaped through holes, and the limiting plate abuts against the opposite sides of the two corner connecting boxes. The problem that an existing tool for assisting modular steel structure assembly cannot meet the assembly precision requirement is solved.

The present disclosure relates to a composite separator, a battery assembly and a method for preventing the slippage of an electrode tab, comprising a main separator layer, at least one side edge of the main separator layer being provided with an edge functional area; the edge functional area comprises a guide inclined surface part and an adsorption unit, the adsorption unit has an adsorption surface with an adsorption force not lower than a preset adsorption force, the adsorption unit is integrated on at least part of the surface of the guide inclined surface part and extends towards the surface of the main separator layer; along the direction from inside to outside of the main separator layer, the thickness of the guide inclined surface part gradually increases; wherein the guide inclined surface part guides and laterally limits the position of the electrode tab, and the adsorption unit actively adsorbs the electrode tab, so as to jointly limit the slippage of the electrode tab relative to the main separator layer; after the electrode tab enters a predetermined position, the electrode tab is actively adsorbed and anchored, so that the relative position between the electrode tab and the composite separator is no longer maintained only by the winding tension, the lamination pressure or the electrolyte wetting force, and the edge positioning stability between the electrode tab and the separator is improved.

The utility model relates to the technical field of automobile decoration parts discloses a bright decorative strip automatic compression device, including electric sliding rail, the sliding block one is slidably connected to the inner wall of electric sliding rail, the upper surface of sliding block one is fixedly connected with stand, the upper surface of stand is fixedly connected with the connecting plate, and the upper portion of connecting plate is provided with extrusion subassembly, the extrusion subassembly includes hydraulic cylinder, the upper surface of connecting plate is provided with hydraulic cylinder, the output fixedly connected with fixed block no.

The utility model discloses a vehicle-mounted integrated lens cone assembly. The end part of the lens barrel is provided with a riveting hole, and a copper column is installed in the hole. One end of the copper column is provided with a blind hole in which a steel ball is embedded. The diameter of the steel ball is larger than that of the blind hole, the steel ball is squeezed into the blind hole during press fitting, radial plastic bulging is generated on the outer wall of the blind hole portion of the copper column, the outer wall of the copper column after bulging is in mechanical interference fit with the wall of the through hole, and therefore high-strength locking of the copper column is achieved. The diameter of the steel ball is matched with the outer diameter of the copper column and the size of the blind hole according to a preset proportion, one-time press fitting can be completed under the conditions of no adhesive and no heat input, and the exposure height of the copper column can be measured online in the assembling process to judge that the copper column is qualified. The assembling consistency and the vibration-resistant reliability of the lens cone assembly are obviously improved; meanwhile, the process is simple, the takt is short, and the method is suitable for large-scale vehicle-mounted optical

The invention belongs to the technical field of functional building materials, and particularly relates to an industrial waste-based energy storage and deicing building block brick, which comprises a cavity brick body, a brick cover arranged at the top of the cavity brick body, and a capacitor array arranged in a cavity of the cavity brick body, the cavity brick body is of a cuboid hollow structure, the top of the cavity brick body is open, the brick cover is a rectangular cover plate matched with the cavity brick body, the capacitor array comprises a plurality of capacitor monomers which are connected in series, and a separation diaphragm is arranged between every two adjacent capacitor monomers; each capacitor monomer comprises an anode electrode, an anode electrolyte, a diaphragm, a cathode electrolyte and a cathode electrode which are connected in sequence. The capacitor array is used as an energy storage unit to be integrated in the cavity of the cavity brick body, synchronous construction of energy storage and building block brick components is achieved through the cavity brick body-capacitor array-brick cover integrated structure, the system integration degree is high, the structure is compact, road paving and subsequent modular replacement and maintenance are facilitated, and the integrated energy storage and building block brick is suitable for application and popularization.

This application relates to an aviation battery, including a casing and an energy storage unit, a support plate, and an electrical unit disposed within the casing. The bottom wall of the casing has spaced-apart limiting strips, and between adjacent limiting strips are spaced-apart height limiting strips with a height lower than the limiting strips. The energy storage unit is placed on the height limiting strips and abuts against two adjacent limiting strips in the length or width direction of the casing. Each limiting strip has an overflow space, which communicates with the gap formed between two adjacent height limiting strips. The support plate supports the electrical unit above the energy storage unit, and the support plate and the energy storage unit are jointly fixed to the bottom wall of the casing by fasteners. This design ensures that the adhesive is evenly spread and excess adhesive is drained during the coating process, meeting the uniformity and controllability requirements of aviation-grade adhesive coating. Simultaneously, the double-layer structure improves spatial integration, reduces the number of fasteners, enhances overall structural stability, and solves the problem of difficult component assembly in confined spaces.

The invention belongs to the technical field of electric power equipment assembly and detection, and discloses an automatic assembly and detection system based on a flexible direct current converter valve module. A cleanliness control assembly; tightening the cooperation assembly; a detection recognition unit; a data fusion and twinborn center; an error evaluation and risk comprehensive evaluation unit; and a scheduling and feedback system. According to the invention, a real-time acquisition and control mechanism is introduced into an assembly executing mechanism, and stress judgment and sequence adjustment are combined, so that the tightening force of the fastener is dynamically adjusted, and different from the operation depending on artificial experience or fixed torque in the prior art, the operation is more accurate. According to the scheme, the pre-tightening force deviation and the local stress concentration position can be automatically recognized in the tightening process, the tightening sequence is adjusted in real time, in this way, the fatigue damage caused by excessive tightening and the loosening problem caused by insufficient tightening are effectively avoided, and the assembly consistency and the structural stability of the valve module are remarkably improved.

This utility model discloses a hydraulic pressing device for assembling gear shafts, belonging to the field of gear shaft technology. It includes: a worktable; a U-shaped pressing plate installed on the worktable surface, with an inverted L-shaped vertical plate welded to the outer wall behind the U-shaped pressing plate; an assembly component disposed within the U-shaped pressing plate and centripetally holding a gear component; a hydraulic pressing component longitudinally installed on the inner top wall of the L-shaped vertical plate, with a shaft body pressed down at its bottom lifting end, the bottom end of the shaft body being inserted into the shaft hole of the gear component; the gear component is centripetally clamped by two symmetrically arranged arc-shaped internal gear plates on its circumference. During the pressing process of the hydraulic pressing component, the shaft body is raised and lowered for positioning by a positioning auxiliary component to prevent the shaft body from getting stuck in the shaft hole. This utility model avoids the errors caused by traditional manual adjustment, achieves precise positioning of the gear component, improves assembly efficiency, and achieves the effects of improving assembly accuracy and reducing manual labor intensity.

The invention provides a radio frequency matrix switch, a configuration method and a related device, and the radio frequency matrix switch comprises a housing which comprises a plurality of side plate assemblies, and the side plate assemblies form an accommodation space in a surrounding manner; the matrix module is arranged in the accommodating space and comprises an input part and an output part which are electrically connected with each other; wherein the input part comprises a plurality of transverse modules which are arranged in a stacked mode in the first direction, the output part comprises a plurality of longitudinal modules which are arranged in an array mode in the second direction, and the first direction is perpendicular to the second direction. According to the radio frequency matrix switch provided by the invention, the modular orthogonal layout structure is adopted, so that the internal topology has reusability, cross wiring is reduced, assembly consistency is improved, and rapid expansion of the radio frequency matrix under different order configurations is realized; therefore, the technical bottlenecks in the aspects of structural expandability, volume control, performance consistency and manufacturability in the prior art are overcome.

The invention relates to the technical field of intelligent wearing equipment, in particular to an assembly tool and an assembly method.The assembly tool comprises a mounting base, a first assembly part and a second assembly part, and the mounting base is used for moving on a line body; the first assembly part comprises a first fixed seat and a first movable seat arranged on the first fixed seat, and a first profiling groove matched with the first part in shape is formed in one side of the first movable seat; the first movable seat can move along the assembling direction relative to the first fixed seat so as to have a first position and a second position; a second profiling groove matched with the second component in shape is formed in the second assembly part; when the first movable seat is located at the second position, the assembling end of the first component located in the first profiling groove is in butt joint with the assembling end of the second component located in the second profiling groove in the assembling direction. The invention aims to solve the problems of low manual assembly efficiency and poor precision in the assembly of the first component and the second component.

The utility model discloses an integrated membrane electrode assembly and an alkaline electrolytic bath, the integrated membrane electrode assembly comprises a diaphragm, the diaphragm comprises a first surface and a second surface which are arranged oppositely, and the diaphragm is provided with an electrolyte channel communicating the first surface and the second surface, the diaphragm comprises an electrolyte channel area located in the middle and a fixed area surrounding the electrolyte channel area; the electrode is arranged on the first surface and / or the second surface, and the electrode covers the fixed area; and the first plastic layer is arranged in the electrolyte channel of the fixing area, and the first plastic layer extends to the first surface and / or the second surface so as to fix the diaphragm and the electrode. The diaphragm and the electrode are bonded and fixed through the first plastic layer, so that integrated design is realized, the assembly process and difficulty are effectively reduced, the assembly cost is reduced, the improvement of the assembly consistency and precision of the electrolytic cell is facilitated, and the overall efficiency of the electrolytic cell, the gas purity and the stability of the product quality are improved.

The utility model relates to the technical field of millimeter wave radars, in particular to an eight-transmitting and eight-receiving dual-chip 4D millimeter wave radar antenna array, which comprises eight transmitting antennas and eight receiving antennas, and the transmitting antennas and the receiving antennas are arranged in the horizontal direction and the pitching direction in a physical space. According to the utility model, the eight transmitting antennas and the eight receiving antennas are arranged, the transmitting antennas and the receiving antennas are distributed in the horizontal direction and the pitching direction in a physical space according to a certain rule, and the array element coordinates of the transmitting antennas and the receiving antennas are distributed in a differentiated manner according to a preset optimization algorithm instead of being simply and uniformly distributed; therefore, the equivalent array synthesized by the virtual channels has better sidelobe performance and higher angular resolution.

This invention relates to the field of VPX press-fitting tooling technology, and discloses a VPX press-fitting tooling and its operating device, including a fixed frame with a fixed groove. A guide structure is inserted into the fixed groove, and the guide structure has several slots and transverse grooves to achieve bidirectional constraint of the insertion hole in both the horizontal and vertical directions, replacing the traditional single-reference positioning, significantly improving the positional accuracy of the insertion hole and the consistency of the fisheye pin orientation, and avoiding assembly misalignment problems from the source. This invention, by setting a guide structure and adopting a combined "transverse groove + slot" positioning structure, simultaneously achieves bidirectional constraint of the insertion hole in both the vertical and horizontal directions, replacing the traditional single-reference positioning, significantly improving the positional accuracy of the insertion hole and the consistency of the fisheye pin orientation, and avoiding assembly misalignment problems from the source.

This utility model relates to the field of engine manufacturing technology, and in particular to a bushing pressing device, including a frame and a workpiece positioning fixture. The frame is vertically fixed from top to bottom with a pressing mechanism, a bushing conveying mechanism, and a transfer mechanism. The workpiece positioning fixture is located directly below the pressing mechanism and is fixedly connected to the frame, used to vertically fix the main bearing cap so that the pre-drilled hole at the top of the main bearing cap faces upwards. When the first pressing end moves downwards, it cooperates with the bushing conveying mechanism to transfer the bushings one by one to the transfer mechanism. The transfer mechanism transfers the input bushings and coaxially fits them vertically to the end of the second pressing end. When the second pressing end moves downwards, it vertically presses the bushing at its end into the pre-drilled hole of the main bearing cap. Through the coordinated operation of multiple mechanisms, the bushing is coaxially fitted onto the end of the second pressing end of the pressing mechanism, and during the downward movement of the second pressing end, the bushing is vertically pressed into the pre-drilled hole of the main bearing cap.

The present application relates to thin film deposition equipment technical field, disclose a shower head and its processing method, the shower head includes: cover plate has the through hole, the through hole includes first hole section and second hole section;Spray plate is provided with connecting column, connecting column includes thread section and base section;Connecting sleeve, including sleeve, sleeve is matched on the outside of thread section;First sealing structure, between the sleeve and the one end of thread section away from base section, the first sealing structure seals the sleeve and thread section.The present application is matched by the sleeve and connecting column thread connection, realize the connection of cover plate and spray plate, the consistency of thread cooperation is higher than welding, can effectively improve the connection precision, in addition, realize the process of connection without using welding and so on heating means, therefore can avoid the deformation of connecting column and so on connecting structure, in addition, still set up the first sealing structure, the first sealing structure can guarantee the sealing performance between connecting sleeve and connecting column, simple structure, convenient operation.

This application discloses an automatic assembly equipment and method for valve train roller tappets, belonging to the field of engine parts installation technology. It includes a body conveying mechanism, a tappet feeding mechanism, a tappet loading mechanism, and a bolt tightening mechanism. The tappet feeding mechanism includes a material conveying rack and a multi-station material handling execution component. The material conveying rack carries and orderly conveys several roller tappets to a preset material handling station. The multi-station material handling execution component is equipped with several material handling grippers. The grippers pick up the roller tappets output from the material conveying rack and transfer them to a posture docking station. A vision acquisition unit acquires the spatial posture of the roller tappets at the posture docking station. A posture adjustment module drives the grippers to rotate the roller tappets circumferentially so that the long positioning grooves of the roller tappets match the preset assembly posture. Multiple grippers and multiple expansion sleeves operate synchronously, with a continuous and compact process, adapting to the rhythm of large-scale production lines to achieve fully automatic alignment and assembly of the roller tappets.

The invention belongs to the technical field of radar antenna automatic assembly, and particularly relates to a radio frequency coaxial connector levelness automatic detection method based on point cloud data, and the method comprises the steps: extracting all local plane features in the point cloud data of a radio frequency coaxial connector through employing a local plane detection algorithm with prior shape constraint based on RANSAC; the automatic detection capability can be modularly embedded into the automatic assembly process of the phased array radar antenna to form an assembly-measurement integrated phased array antenna automatic assembly unit, so that the assembly efficiency and the assembly consistency of the radar antenna assembly are greatly improved. Compared with a traditional manual measurement or three-coordinate measurement mode, the method has the advantage that the detection efficiency of the levelness of the radio frequency coaxial connector can be improved by 5-10 times by combining surface structured light scanning with the algorithm provided by the invention. The antenna does not need to be frequently moved and adjusted due to limitation of measurement hardware, and in-situ measurement is achieved. And meanwhile, automatic data analysis and calculation do not need manual participation, so that the labor cost is greatly reduced.

The utility model discloses a vehicle co-driver entertainment screen supporting frame, and relates to the field of vehicle intelligent cabin structure design, in particular to a support assembly structure used for display screen installation and function module integration on the co-driver side. The supporting frame comprises a supporting frame main board, an entertainment screen, a function module mounting cavity and a side board, the entertainment screen is fixedly arranged in the middle of the right side of the supporting frame main board, the function module mounting cavity is formed in the left side of the supporting frame main board, a plurality of main board connecting columns are arranged on the side edge of the supporting frame main board, and a plurality of connecting pieces are vertically arranged on the bottom edge of the side board. The side plate is fixedly connected with the main plate connecting column through a connecting piece and a screw, and the side plate is perpendicularly fixed to one side of the supporting frame main plate. According to the utility model, the positioning column structure arranged on the back surface of the main board and a vehicle structural board form a fit supporting relationship, so that multiple positioning of the assembly in the vertical direction, the longitudinal direction and the horizontal direction is realized, and the assembly precision and consistency of the whole vehicle interior module are effectively improved.

The utility model relates to a kind of gear box process fixing structure for automobile micro motor, wherein, the fixing structure is arranged on gear box (1), including first positioning structure (2) and second positioning structure (3), first positioning structure (2) is arranged at the top of gear box (1), the second positioning structure (3) is arranged at the motor body installation port of gear box (1), the first positioning structure (2) is a pair of symmetrical grooves, including the inner recess (2-1) in middle position, protruding portion (2-2) projecting along the both sides of inner recess (2-1), and the extension (2-3) that is unfolded along the both side edges of protruding portion (2-2).The second positioning structure (3) is an open structure.The gear box process fixing structure for automobile micro motor of the utility model is adopted, after realizing the process fixing of gear box by first positioning structure (2) and second positioning structure (3), the assembly consistency of motor body and gear box can be effectively improved.

This utility model relates to the field of piston rod assembly technology, and in particular to an automatic piston rod assembly equipment for valve assemblies. It includes a switching mechanism mounted on a frame, and a piston rod feeding mechanism, a nut loading mechanism, a nut clamping mechanism, and a piston rod unloading mechanism are arranged sequentially along the circumferential rotation direction of the switching mechanism. This solves the technical problems of traditional assembly requiring multiple manual interventions, resulting in long production cycles. For example, manual rotation and positioning of the tooling rotation mechanism is time-consuming and prone to errors.

The utility model relates to the technical field of keyboard accessories, in particular to a balancing-rod-based keyboard satellite shaft capable of being automatically assembled in a matched mode, a mounting opening is formed in the side face of a shaft seat, the extending direction of the mounting opening is aligned with the horizontal direction of a mounting groove, and a sliding section is directly inserted into the mounting groove of the corresponding shaft center through the mounting opening. And the sliding section can horizontally slide in the mounting groove along with the vertical movement of the axle centers, so that the synchronous linkage of the axle centers at the two ends is realized. Through the horizontal alignment design of the shaft seat lateral mounting opening and the shaft center mounting groove, the linear insertion type assembly of the balance rod is realized, and the process requirements of an automatic production line can be met.

The invention provides a static var generator convenient for automatic processing, and relates to the technical field of filtering equipment, and the static var generator comprises a housing which is provided with an assembly cavity, and the interior of the assembly cavity is provided with an assembly wall surface; the at least two circuit boards are assembled on the assembling wall surface, the two adjacent circuit boards are arranged at intervals or in a staggered manner, different functional parts are arranged on different circuit boards, and at least parts of the circuit boards are electrically connected; in the assembling process of the static var generator, the at least two circuit boards are assembled in the same working procedure. According to the invention, the plurality of circuit boards are assembled in the same process, so that the production process is simplified, manual intervention and assembly time are reduced, and the consistency and reliability of assembly are improved.

The application discloses a manufacturing method of a lithium ion battery, which comprises the following steps: providing an electric core, wherein the electric core comprises a positive electrode lug and a negative electrode lug; directly connecting a positive electrode terminal with the positive electrode lug to form a positive electrode part and directly connecting a negative electrode terminal with the negative electrode lug to form a negative electrode part, so that a connecting piece is saved; installing a first insulating piece, wherein the positive electrode part and the negative electrode part penetrate a first opening of the first insulating piece; installing a cover plate, wherein the positive electrode part and the negative electrode part penetrate a second opening of the cover plate; fixing the positive electrode part and the negative electrode part to prevent the positive electrode part and the negative electrode part from moving in a horizontal direction; pouring sealing material to package the second opening; adjusting the height of the positive electrode part and the negative electrode part before the sealing material solidifies; and solidifying the sealing material to form a second insulating piece, so that the application can simplify a structure assembly process, improve assembly consistency and improve the internal filling rate of the lithium ion battery.

This invention discloses a rear frame structure for a vehicle cargo box and its assembly method, belonging to the field of automotive manufacturing technology. The structure connects the cargo box crossbeam assembly and the rear outer panel assembly to form a composite beam, with three-dimensional limiting socket interfaces at both ends. The left and right rear pillar assemblies of the cargo box are equipped with matching sockets, which can be inserted vertically into the interfaces to achieve automatic guidance and horizontal limiting, greatly simplifying assembly. After socketing, a combination of internal welding and external bolts ensures strength and utilizes bolt preload to actively level surface differences. The cargo box crossbeam assembly adopts a U-shaped cross-section design, with built-in support plates and pre-set suspension mounting points, improving overall rigidity and assembly accuracy. This invention effectively solves the problems of poor welding quality, low assembly accuracy, and poor appearance matching in traditional cargo box rear structures.