28results about How to "Improve load resistance" patented technology

The utility model discloses a marble slab dry hanging anti-falling structure which comprises a plurality of marble slabs and a pre-assembling device, and the pre-assembling device is composed of a keel structure and two opposite pre-buried steel belts, the keel structure is formed by interweaving a plurality of vertical keels and a plurality of transverse keels, the radial section of the keel structure is in a net shape, every two adjacent transverse keels are in clearance fit, the transverse keels and the adjacent vertical keels are combined to form a grid area, and stainless steel connecting pieces are connected between each vertical keel and the transverse keels. The two ends of the vertical keels are connected with the embedded steel belts correspondingly, and the transverse keels are provided with anti-falling pieces used for being connected with the marble slabs and preventing the marble slabs from falling off and damping pieces used for being installed between the marble slabs and the transverse keels. The problem that in the prior art, a transverse keel, a vertical keel, a marble fastener and a connecting part are rusted and fractured, so that a marble slab of a marble dry-hanging outer ring falls off is solved.

The invention discloses a production process of a high-toughness plastic packaging bag, the packaging bag comprises the following raw materials: polytetrafluoroethylene, molybdenum disulfide, graphite, plant fiber, glass fiber, carbon fiber, aromatic polyamide fiber, attapulgite, white carbon black, polyacrylamide, an auxiliary agent and vinyl trimethoxy silane, the production process comprises the following steps: S1, plastic raw materials are selected, and the plastic raw materials are uniformly mixed; adding into a high-degree mixer and uniformly mixing; s2, an auxiliary agent is added in the process of S1, and high-temperature mixing is carried out to form a molten state; s3, enabling the materials in the S2 to pass through a screw extruder base to form a tubular film blank, and performing film blowing and shaping by using a film blowing machine to form a film; and S4, using a bag making machine to carry out operations such as edge sealing, cutting and trepanning on the film, and packaging and warehousing finished products. Compared with the prior art, the plastic packaging bag has the advantage that the toughness and wear resistance of the plastic packaging bag can be improved.

The invention relates to the field of building materials, and particularly discloses concrete for a prefabricated lining segment and a preparation method of the concrete. The invention discloses concrete for a prefabricated lining segment. The concrete is prepared from the following raw materials in parts by weight: 380 to 400 parts of cement, 720 to 750 parts of sand, 1135 to 1200 parts of stones, 130 to 150 parts of water, 50 to 60 parts of fly ash, 5.16 to 5.5 parts of an additive, 90 to 100 parts of modified polycrystalline mullite fibers and 45 to 50 parts of porous filler, the modified polycrystalline mullite fiber comprises polycrystalline mullite fiber and alumina nanowire aerogel loaded on the surface of the polycrystalline mullite fiber, and the mass ratio of the polycrystalline mullite fiber to the alumina nanowire aerogel is 1: (0.2-0.4). The concrete for the lining segment is high in compressive strength, good in crack resistance, excellent in high-temperature resistance, high in fire resistance and not prone to cracking at the high temperature.

The utility model discloses a regular hexagon honeycomb macromolecule geocell which comprises a plurality of groups of geocell bodies, the plurality of groups of geocell bodies are connected to form a geocell grid group, and each geocell body comprises a regular hexagon, a punching array, a reinforcing column and a limiting groove. The limiting grooves are formed in the lower portions of the outer surfaces of the front side and the rear side of the regular hexagon, and concave ground inserting rods penetrate through the limiting grooves. According to the regular hexagon honeycomb macromolecule geocell, the geocell bodies are arranged, the reinforcing columns are fixedly installed in the geocell bodies, the load resisting capacity of geocell grid sets is improved through the reinforcing columns, the geocell bodies are conveniently limited through the arranged concave ground inserting rods, and therefore the geocell bodies are not prone to falling off. And the stability of connection between the geocell body and the ground is improved.

The utility model relates to the technical field of vibration motors, in particular to a limited rotation angle vibration motor, which comprises a casing, a stator assembly and a rotor assembly, the stator assembly and the rotor assembly are arranged in the casing, and the rotor assembly is arranged in the stator assembly. The rotor assembly comprises an output shaft and a rotating shaft, the rotating shaft is connected with a magnetic shoe seat, the magnetic shoe seat is connected with an elastic sheet seat through an elastic sheet, and the magnetic shoe seat is provided with a first magnetic shoe, a second magnetic shoe, a first magnetic conductive sheet and a second magnetic conductive sheet. The first magnetic shoe, the second magnetic shoe, the first magnetic conductive sheet and the second magnetic conductive sheet are oppositely arranged in pairs around the magnetic shoe seat; the stator assembly comprises a stator iron core, two windings of the stator iron core are respectively wound with a coil, the upper end part and the lower end part of each coil are respectively provided with an upper coil frame and a lower coil frame, and the end part of each coil is provided with a coil lead which is led to the outside of the casing. The motor rotor has the advantages of improving the anti-load capacity of the motor, reducing the cost of the motor, improving the strength of the motor rotor body and the like.

The utility model provides a kind of external hexagonal bolt of anti-loosening, including stud, screw head, nut, inner inflation hole, internal thread, inner inflation head and deformation groove, the stud and screw head are integrally set together, the stud is threadedly installed with nut, one end is provided with inner inflation hole, internal thread and deformation groove, the inner inflation head is threadedly connected with the internal thread of stud setting;The utility model improves strength by solid stud (no through hole);Circular array deformation groove cooperates conical inner inflation head, evenly expands to form stable interference when screwing, and the anti-loosening is superior to traditional;Inner inflation head integrally designed, screw rod is directly connected with internal thread, and installation is simple, stress is uniform.

To provide a carbon fiber bundle capable of suppressing winding due to ring-shaped fuzzes, which occurs when the carbon fiber bundle is rolled out for advanced processing, and a production method for producing the same. Disclosed is a carbon fiber bundle wherein an average single-fiber diameter B is 6.9 to 11.0 um, a tensile modulus E of resin-impregnated strands is 230 to 310 GPa, the number of fuzzes inherent in the carbon fiber bundle is 40 fuzzes / m or less, and a proportion of fuzzes with a structure having a difference between skin and core is 1 to 25% of fuzzes inherent in the carbon fiber bundle. Such a carbon fiber bundle is preferably obtained by a method including, in a process of heat-treating a polyacrylonitrile-based precursor fiber bundle with a single-fiber fineness of 0.9 to 2.2 dtex in an oxidizing atmosphere at 200 to 300°C, heat-treating the polyacrylonitrile-based precursor fiber bundle so that a heat generation rate Q, which is the left side of the formula (3), is 150 to 500 J / m2 / s until the density is 1.22 to 1.24 g / cm3, when q (J / g / s) is the heat generation rate of the single fiber, N is the number of filaments, d (dtex) is a single-fiber fineness of the stabilized fiber bundle and W (mm) is a yarn width, heat-treating the fiber bundle while applying a tension of 1.6 to 4.0 mN / dtex until the density is 1.38 to 1.50 g / cm3 to obtain a stabilized fiber bundle, and heat-treating the stabilized fiber bundle in an inert atmosphere at 1,200 to 1,600°C. Q=q×N×d / W / 10

The utility model relates to the technical field of retaining walls, in particular to a permeable retaining wall based on an environment intelligent terminal, which comprises a wall body, a groove is arranged on the wall body, a plurality of permeable plates are arranged in the groove, a plurality of permeable grooves communicated with the groove are arranged on two sides of the wall body, flanges are integrally formed on two sides of each permeable plate, and the permeable plates are arranged in the grooves. Test holes for mounting water level monitoring sensors are formed in the plurality of water permeable plates, and a secondary grouting reinforcement channel is arranged between every two left and right adjacent water permeable plates; flanges on the two sides of the water permeable plates are matched with the tops and the bottoms of the water permeable plates, splicing of the upper water permeable plate and the lower water permeable plate is facilitated, arrangement of a secondary grouting reinforcement channel is facilitated, steel bars are conveniently arranged, and concrete is conveniently poured, so that the overall strength and the load resistance can be improved, water on one side of the wall enters the grooves through the water permeable grooves, and flowing of the water is not affected by the water permeable plates; and the water permeable plates in the grooves can block soil, so that water and soil loss can be reduced, and the safety is improved.

The invention discloses an awning steel structure system and a construction method thereof, and relates to the technical field of awning steel structures. The strength of the steel structure system is improved. Comprising a steel structure connecting frame, the steel structure connecting frame is used for building an awning main body part, and the steel structure connecting frame is connected with internal concrete through a pull rod. The first drainage ditch and the second drainage ditch are used for quickening drainage in rainy days, so that rainwater is prevented from falling in a straight waterfall mode, the rain shed is arranged as a rain shielding mechanism, a small amount of rainwater can be effectively blocked when falling from the edge of the second aluminum veneer decorative roof, and the service life of the aluminum veneer decorative roof is prolonged. The aluminum alloy latticed shell is arranged to serve as a framework for laying the colorful aluminum composite board decorative curtain wall, the colorful aluminum composite board decorative curtain wall and the steel structure connecting frame can be fixed conveniently, and when internal concrete needs to be built in the steel structure connecting frame, the steel structure connecting frame and the internal concrete are connected through the pull rod, so that the internal concrete can be conveniently built; therefore, the stability of the steel structure armature is improved.

The invention provides a gabion check dam, system and method for governing a small erosion gully in sand land, and relates to the technical field of erosion gully governing, the gabion check dam comprises a dam body, the dam body comprises gabions piled up, and each gabion comprises a metal mesh cage body and construction waste filled in the metal mesh cage body; the transverse joints of the upper and lower adjacent gabions are fixedly connected through transverse steel bars, the longitudinal joints of the left and right adjacent gabions are fixedly connected through longitudinal steel bars, and the bottom ends of the longitudinal steel bars are inserted into the ditch bottom of the erosion ditch; the transverse reinforcing steel bars are fixedly connected with the longitudinal reinforcing steel bars; by arranging the transverse reinforcing steel bars and the longitudinal reinforcing steel bars, the situation that the gabion shifts under the action of large scouring force, and consequently the dam body inclines is avoided; and the gabion adopts the construction waste as a filler, so that the dependence on natural resources is reduced, and the problem of absorption and disposal of the construction waste is solved.

The modified large-span plastic greenhouse comprises cross beams, a roof arch frame and stand columns, the cross beams comprise an upper cross beam, a lower cross beam, two pieces of connecting angle steel and web members for fixedly connecting the upper cross beam and the lower cross beam, and the connecting angle steel is arranged on the two sides of the upper cross beam and the two sides of the lower cross beam respectively; the roof arch frame comprises an arch frame, an upper chord member and a lower chord member, the upper chord member and the lower chord member are obliquely arranged in parallel, the upper end of the upper chord member and the upper end of the lower chord member are connected with the upper end of the arch frame, and the lower end of the upper chord member and the lower end of the lower chord member are connected with the connecting angle steel; the arch frames, the upper chords and the lower chords are symmetrically arranged on the two sides of the cross beam, a T-shaped connecting support is fixedly connected to the upper portion of the upper cross beam and comprises a horizontal supporting rod and a vertical supporting rod which are perpendicularly connected, the two ends of the horizontal supporting rod are connected with the two sets of upper chords respectively, the upper end of the vertical supporting rod is connected with the horizontal supporting rod, and the lower end of the vertical supporting rod is connected with the upper cross beam. The upper end of the stand column is connected with the lower beam, and the lower end of the stand column is arranged on the stand column base. The device is simple in structure and complete in function, the waste sunlight greenhouse roof arch frame is recycled, the construction cost of a large-span plastic greenhouse is reduced, and the development of facility agriculture can be promoted.

The utility model discloses a kind of load-bearing frame and hydraulic climbing formwork system, the load-bearing frame includes base plate, base frame, rear shift module and additional module;Two and interval, parallel arrangement are equipped with in base plate, the interval between two base plates is equal to the interval in climbing cone to middle;Two and are respectively buckled on one of base plate in base frame, the interval in two base frames to middle is equal to the interval in climbing cone to middle;The connection between two base plates is perpendicular to the axis of base plate, the diagonal error of base plate and base frame is all not more than 2mm;Rear shift module and additional module are all installed on base frame. The hydraulic climbing formwork system includes the load-bearing frame. The load-bearing frame frame body wing risk reduction, load-carrying capacity promotion, the strengthening of structure and the promotion of stability are realized, so that the use safety of the load-bearing frame is better. The rigidity of the load-bearing frame is improved, the turnover efficiency of material is higher, partial buckling and deformation accumulation are avoided, and construction efficiency and construction quality are effectively optimized.

The utility model provides a power generation assembly, which can be installed on a building, and comprises a photovoltaic body, a power generation module and a power supply module, the first mounting part is arranged on the photovoltaic body; and the second mounting part is arranged on the building, and the second mounting part can be matched with or separated from the first mounting part.

The utility model discloses a novel high-strength storage tank capable of preventing liquid from shaking, which relates to the technical field of liquid storage equipment and comprises a storage tank body, reinforcing rib groups are distributed on the inner wall of the storage tank body, a plurality of liquid baffles are distributed on the storage tank body, and the peripheries of the liquid baffles are welded with the inner wall of the storage tank body. The distribution density of the reinforcing rib groups at the joints of the liquid baffles is lower than that of other areas, flow guide holes are formed in the plate surfaces of the liquid baffles and distributed from the edges to the centers of the plate surfaces of the liquid baffles, and the flow guide holes in the plate surfaces of the adjacent liquid baffles are arranged in a staggered mode. The liquid baffles can block and slow flow of most liquid, the flow guide holes in the plate faces of the adjacent liquid baffles are staggered, the liquid can be prevented from passing through the multiple liquid baffles at a time under impact, the impact resistance of the device is improved, and damage to a storage box and other parts due to liquid shaking caused by sudden acceleration is prevented; the storage tank can effectively reduce damage to the storage tank and other parts caused by liquid shaking, and has the advantages of low cost, light weight and high strength.

Provided is a polyamide resin composition for a foam molded article, which has high appearance performance, high load resistance and high impact resistance. A polyamide resin composition for foam molding containing 40-70 parts by mass of a crystalline polyamide resin (A), 5-15 parts by mass of an amorphous polyamide resin (B), 15-50 parts by mass of an inorganic reinforcing material (C), 0.1-10 parts by mass of an elastomer (D), and 0.5-15 parts by mass of a copolymer (E) having a functional group that reacts with a terminal group of the polyamide resin, the total of the crystalline polyamide resin (A), the amorphous polyamide resin (B), the inorganic reinforcing material (C), the elastomer (D), and the copolymer (E) having a functional group that reacts with a terminal group of the polyamide resin is 100 parts by mass.

This invention provides a dual-swing mechanism for a marine crane, relating to the field of marine lifting equipment technology. It includes a slewing base, a boom, a lower compensating swing assembly, an upper compensating swing assembly, a lifting assembly for the spreader, a passive damping counterweight assembly, and a centrifugal locking assembly. The lower and upper swing assemblies respectively achieve two-stage swing compensation at the boom root and the spreader end. The passive damping counterweight assembly relies on the weight of the main counterweight to provide the reset pull, while the friction damping assembly dissipates the swing kinetic energy, requiring no additional power throughout the process. Centrifugal locking assemblies are installed at the ends of the lower and upper shafts, automatically locking the shafts when the swing exceeds the speed limit, avoiding the risk of uncontrolled load. The lower compensating swing assembly is equipped with a parallel four-bar stabilizing structure to improve rigidity, while the upper compensating swing assembly incorporates a sliding counterweight for adaptive buffering and vibration reduction. This invention features a purely passive structure, simple maintenance, adaptability to different sea conditions and loads, and overspeed self-locking protection, effectively improving the stability and operational safety of marine lifting.

This joining structure for an automobile frame member is provided with: a first member having a top plate, two vertical walls, two first ridge parts, and a continuous flange; the second member has a first wall surface facing an axial end portion of the first member, a second wall surface extending from the first wall surface to a side opposite to the first member side, and a second ridge line portion sandwiched between the first wall surface and the second wall surface, and in the continuous flange, a distance h between the second ridge line portion and the top plate satisfies-10 mm < = h < = 10 mm, and a distance h between the second ridge line portion and the top plate satisfies-10 mm < = h < = 10 mm. Angles theta formed by a surface perpendicular to the top plate and the two longitudinal walls respectively meet the condition that theta is larger than or equal to 20 degrees and smaller than or equal to 45 degrees.

The application discloses a kind of gob-side entry retaining support structure and construction method of steeply inclined coal seam fully mechanized working face.The support structure is arranged in the transport roadway near the side of goaf, including anchoring load-bearing parts, net body gangue retaining parts, restraint reinforcement, pre-stressed locking parts and flexible sealing material;Anchoring load-bearing parts are laid in the roof and bottom corner surrounding rock, net body gangue retaining parts are hung on the exposed section of anchoring load-bearing parts and cover along the whole height of roadway, restraint reinforcement is overlaid on the outside of net body and is connected with anchoring load-bearing parts, pre-stressed locking parts are set on the end of anchoring load-bearing parts and pre-tightening force is applied to form support base surface, and flexible sealing material is sprayed on the support base surface for sealing.The construction method includes drilling anchoring, hanging net body, installing restraint reinforcement, locking pre-tightening, spraying sealing.The application realizes the integration of support structure, has good gangue retaining and sealing effect, adapts to steeply inclined coal seam working condition, is convenient to construct and can be operated synchronously with mining, effectively improves the safety and reliability of gob-side entry retaining, and reduces the cost of mining.

The utility model belongs to the technical field of machine tool workbench moving auxiliary mechanisms, and particularly relates to a workbench lifting mechanism which comprises a lifting module and is characterized in that the lifting module comprises an eccentric cam assembly and a swing rod assembly, and one end of a wheel shaft of the eccentric cam assembly is connected with the swing rod assembly; one end of a swing rod of the swing rod assembly is fixed to a wheel shaft of the eccentric cam assembly, the other end of the swing rod is hinged to a pull rod, and the pull rod is perpendicular to the rotation center line of the eccentric cam assembly. The lifting mechanism solves the problems that a lifting mechanism adopting a plurality of telescopic cylinders is large in control difficulty and high in use cost, is applied to the vertical exchange process of the workbenches of the horizontal turning plate machining center, and ensures that the exchange process of the workbenches is stably and reliably executed.

The car seat backrest frame (1) comprises: a first side frame (2) and a second side frame (3) separately arranged in the vehicle width direction; an upper frame (4) connecting the upper end (2a) of the first side frame (2) and the upper end (3a) of the second side frame (3); and an upper bracket (7) mounted on the upper end (2a) of the first side frame (2) and guiding the seat belt. The first side frame (2) is an extruded part extending in the vertical direction of the vehicle, and its lower end (2b) is fixed. The first side frame (2) has a closed section (10) in a cross section perpendicular to the vertical direction of the vehicle. The upper end (2a) of the first side frame (2) is crushed towards the rear of the vehicle, and the thickness of the upper end (2a) in the longitudinal direction of the vehicle is smaller than that of the lower end (2b).

The utility model discloses a kind of ladder installation reservation structure of prefabricated inspection well, including the pre-embedded cavity of two ends opening, pre-embedded cavity is installed in the well wall of prefabricated inspection well and one end opening flush with well wall inner side, the top of the bottom surface of pre-embedded cavity is spaced apart and provided with multiple horizontal limit plates, and the outer end of horizontal limit plate is fixed on the side wall of pre-embedded cavity.The ladder installation reservation structure of prefabricated inspection well of the utility model, by custom pre-embedded cavity, horizontal limit plate and vertical limit plate, provide special installation space and positioning guarantee for ladder, ladder positioning is accurate, support ladder in factory standardization installation, save later-stage drilling, reinforcing bar process, avoid to destroy well wall integrity, pre-embedded cavity uses modular design, installation operation is convenient and efficient, to build structure overall strength, construction efficiency is high, the ladder system of excellent safety.

The invention relates to a blade web corner R-angle forming method which comprises the following steps: preparing an R-angle mold and a web mold according to design parameters, smearing a release agent on the web mold, carrying out positioning line drawing on the R-angle mold, and sequentially bonding and fixing the R-angle mold on the web mold according to the line drawing position, laying a non-porous isolating membrane in a groove of a web mold, pouring a uniform curable material into the groove, striking off, heating and curing to obtain an R-angle finished product, laying demolding cloth and a glass fiber cloth layer, sequentially putting the R-angle finished product, folding the glass fiber cloth layer, tightly attaching the glass fiber cloth layer to the large surface of the web mold, laying a web structural layer, and pouring, curing and demolding to obtain the web corner R-angle. According to the method, stress concentration of the web corners can be eliminated, local instability of the blade is avoided, and the load resistance and safety of the whole blade are improved.

The invention provides a water damping elastic cable for reducing the peak value of offshore floating photovoltaic mooring force, and relates to the field of ocean engineering and renewable energy sources. The device comprises main components such as a steel sleeve, a pressure spring, a pull rod, a backflow hole and a check valve. The steel sleeve is sealed to form a closed space, the internal pull rod and the pressure spring push plate move under the action of stress to drive the pressure spring to be compressed or rebounded, meanwhile, water flows among the backflow holes, and the water damping effect is generated. The damping effect can be flexibly regulated and controlled by adjusting the size of the backflow hole. The upper check valve and the lower check valve are installed on a top cover and a bottom cover of the steel sleeve respectively, one-way flowing of water is achieved, damping in the spring compression process is not affected, and meanwhile damping generated when the compression spring rebounds is reduced. The device is not only suitable for an offshore floating photovoltaic system, but also can be applied to mooring systems of other floating body structures for wind power generation and the like, and the wind wave resistance and the operation stability of the system are improved by reducing the instantaneous tension peak value.

The utility model relates to the technical field of buildings and new energy, in particular to a novel roof additional photovoltaic supporting structure. The structure comprises a curved beam, a supporting rod, a tensioning cable, a supporting round rod, a metal sleeve, a structure connecting device, a support and the like. The photovoltaic assemblies are installed on the supporting round rods, the tensioning cables are connected with the curved beams through the structure connection devices, stress distribution is optimized by reasonably controlling prestress in the tensioning cables, and roof loads are reduced. The supports are connected with the curved beams through pins, so that the stability and the flexibility of the roof additional photovoltaic supporting structure are ensured. The utility model has the advantages that the stress distribution of the roof can be effectively optimized, the self-weight load is reduced, the construction process is simplified, the damage to the outer surface of the roof is avoided, and the complex reinforcement of the building structure is not needed. The structure is suitable for roofs, such as large-span plants and warehouses, which are not accessible to people, has wide application prospects and remarkable economic benefits, and provides an innovative solution for efficient and safe installation of a photovoltaic power generation system.

This actuator (1) is provided with a motor (3), a driven machine (2), a base plate (16), a belt mechanism (4), and a tension adjustment mechanism (5), in which a through-hole (16b) is formed in the base plate (16), and the tension adjustment mechanism (5) is provided with an adjustment plate (40) and an adjustment screw (50).

The invention provides an internal combustion locomotive control method which comprises the steps that the current operation state of an internal combustion locomotive is obtained, the current operation state comprises the traction state, the coasting state and the braking state, and the braking state comprises the electric braking state; under the condition that the current running state of the internal combustion locomotive is the electric braking state, a first tendency chart of the engine torque of the internal combustion locomotive changing along with the engine rotating speed is obtained; determining a target rotating speed based on the first trend chart; and adjusting the engine rotating speed of the diesel locomotive to the target rotating speed. The invention further provides a control device and equipment of the diesel locomotive, a storage medium and the diesel locomotive.

The utility model discloses an adjustable pressure reduction prying frame which comprises two sets of end beams and two sets of side beams, the two sets of end beams are fixedly installed at the left end and the right end between the two sets of side beams, a movable supporting frame is connected between the two sets of side beams in a sliding mode, and sliding grooves are formed in the inner walls of the side beams. Through grooves are formed in the outer walls of the side beams, sliding blocks are fixedly installed on the outer surfaces of the two ends of the movable supporting frame, locking assemblies are installed on the sliding blocks, each locking assembly comprises a threaded rod, an anti-sliding block and a rotating head, and a mounting cavity is formed in the end, close to the movable supporting frame, of each sliding block; threaded holes are formed in the middles of the outer surfaces of the ends, away from the movable supporting frame, of the sliding blocks. According to the adjustable pressure reducing pry carrying frame, the position is convenient to adjust through the arranged movable supporting frame, so that better conditions can be provided when a pressure reducing pry is assembled, the pressure reducing pry is more flexible to assemble, and the applicability is better.

This invention relates to a welding device for steel cages used in the production of utility poles. The device includes a welding lathe with a CNC positioning frame mounted on top. A welding device is fixedly connected to the outer side of the CNC positioning frame, and a welding head is fixedly connected to the bottom of the welding device. Multiple sets of positioning clips for fixing the ends of the steel cage for the utility pole are mounted on the top surface of the welding lathe. The welding head includes a laser emitter fixedly installed at the output end of the welding device. A straight cylindrical welding nozzle is sleeved on the outer side of the laser emitter, and an inner cylinder is provided at the bottom of the laser emitter. The inner cylinder includes three arc-shaped alloy lobes slidably connected to the bottom of the laser emitter. This invention achieves a gradual weld formation, which results in a more uniform stress distribution along the entire length of the weld, eliminating local stress peaks found in traditional equal-width welds. This prevents weld cracking during centrifugal forming, hoisting, and long-term service of the utility pole, and improves the load-bearing capacity and structural stability of the welded joints of the steel cage.