618 results about "Type metal" patented technology

The utility model relates to the technical field of wave-absorbing material testing, and discloses a wave-absorbing material flat plate reflectivity testing device which comprises a flat plate sample table and a horn antenna matched with the flat plate sample table, the flat sample table comprises a cylindrical rod, a base, a rotating track, a table top and an inverted T-shaped metal panel which are connected with one another; the inverted T-shaped metal panel is driven to rotate along the circumferential direction when the rotating track on the table top rotates; the testing sample is arranged on one side face, facing the horn antenna, of a vertical panel of the inverted-T-shaped metal panel, and when the rotating track rotates in the circumferential direction, the inverted-T-shaped metal panel is driven to rotate in the circumferential direction, or the angle between the vertical panel and a horizontal panel of the T-shaped metal panel is adjusted, so that the testing sample is tested. And direction angles and pitch angles between the plane of the test sample and the horn antennas can be adjusted. The device has the advantages of being flexible and convenient to use, small in occupied area, capable of achieving multi-stage adjustment, high in testing precision and the like.

The invention relates to the technical field of artificial electromagnetic metasurfaces, in particular to a full-space multifunctional terahertz metasurface. The metasurface is composed of a plurality of metasurface units arranged periodically, and each metasurface unit sequentially comprises a first metal structure layer, a first middle dielectric layer, a grating layer, a second middle dielectric layer and a second metal structure layer from top to bottom. The first metal structure layer and the second metal structure layer are the same in structure and each comprise two C-shaped metal rings, and the two C-shaped metal rings are connected in a staggered mode to form a disconnected and staggered S shape. The first intermediate dielectric layer and the second intermediate dielectric layer are consistent in thickness; the grating layer comprises vanadium dioxide and copper which are alternately arranged, and multifunctional dynamic regulation and control of transmission, reflection and the whole space are achieved by controlling phase change of the vanadium dioxide. The metasurface provided by the invention can respectively realize the functions of polarization conversion, linear-circular polarization wave conversion, circular dichroism, asymmetric transmission and the like in different states.

The invention relates to the technical field of oil and gas reservoir exploitation equipment, in particular to a compression type metal packer which is used for solving the problem that a high-temperature and high-pressure deep well rubber cylinder serving as a sealing element cannot meet operation requirements, and the compression type metal packer comprises a first connector and a second connector which are connected to the upper end and the lower end of a central pipe; a sealing mechanism is arranged in the middle of the central pipe and comprises a metal sealing cylinder, a sealing ring and a sealing ring; the upper sealing cone sleeves the central pipe and is arranged at the upper part of the metal sealing cylinder; the lower sealing cone sleeves the central pipe and is arranged at the lower part of the metal sealing cylinder; the metal sealing cylinder is made of nickel-titanium-based superelastic alloy; the metal sealing cylinder is made of nickel-titanium-based superelastic alloy, annealing treatment is conducted at the temperature of 650 DEG C, thermal circulation and mechanical training are conducted at the temperature above the phase change temperature, the stable mechanical performance is obtained, the ideal deformation rate can be obtained under the small load effect, the setting force and the unsetting force are reduced, and the metal sealing cylinder is suitable for high-temperature and high-pressure deep well operation.

The invention discloses a free filling type metal wire embedded solid propellant forming device and process, and belongs to the field of solid propellants, the free filling type metal wire embedded solid propellant forming device comprises a bottom plate, a base, a mold cylinder and a top cover are sequentially arranged on the bottom plate, and a plurality of pressing structures are arranged on the upper portion of the top cover; a solid propellant coating barrel is arranged on the inner wall of the mold barrel; the lower end of the metal wire is fixed on the bottom plate, the upper end of the metal wire is fixed on the first fastener of the fastener mounting block on the top cover, and the first fastener is screwed into the threaded hole, so that the metal wire can be tensioned, and the internal stress of the metal wire can be adjusted by adjusting the expansion amount of the metal wire; according to the invention, the collimation of the metal wire in the propellant is ensured, the proper stress of the metal wire in the slurry casting process is also ensured, the problem that the metal wire is broken due to overlarge stress is avoided, and the technical problem that the yield of the solid propellant is low due to the fact that the metal wire is easy to break in the propellant in the prior art is solved.

The utility model relates to the technical field of laser cutting, and discloses a thin metal plate laser cutting machine which comprises a laser cutting head, an installation support is installed on the outer wall of the laser cutting head, a small motor is installed at the end, away from the laser cutting head, of the installation support, and a power gear is installed at the output end of the small motor. According to the thin metal plate laser cutting machine, the position, located on the outer side of the laser cutting head, of the surface of a metal plate is polished through rotation of the polishing piece, residual molten metal on the surface of the metal plate is polished through polishing of the polishing piece, and therefore the smooth effect of the surface of the metal plate at the cutting position is improved, and the cutting quality is improved; and through cooperation of an inner adsorption magnet and an outer adsorption magnet, chippings generated by polishing are adsorbed, and the situation that the metal chippings generated by polishing are left on the surface of a plate, additional cleaning work needs to be conducted, and the subsequent laser cutting quality can be affected when the metal chippings are left on a cutting route is prevented.

The invention discloses a high-strength and high-toughness nickel-based multi-principal-element alloy and a preparation method thereof, and belongs to the technical field of novel metal materials and preparation thereof.The preparation method comprises the following steps that raw materials are cleaned and matched according to the mass percent of composition elements of the high-strength and high-toughness nickel-based multi-principal-element alloy; smelting the proportioned raw materials in a vacuum arc furnace, and carrying out suction casting to obtain a multi-principal-element alloy block; and the multi-principal element alloy block is subjected to homogenizing annealing treatment, rolling deformation and subsequent heat treatment, and then the high-toughness nickel-based multi-principal element alloy is obtained. The preparation method is simple, the heat treatment method is simple and convenient, good matching of strength and toughness is achieved, the mechanical property of the multi-principal-element alloy subjected to aging treatment for 12 hours is optimal, the yield strength is 925.5 MPa, the ultimate tensile strength is 1268.6 MPa, and the ductility is 24.1%.

The invention belongs to the technical field of metal casting cutting, and particularly relates to an automatic cutting device for cutting metal castings, which comprises a cutting table, a receiving bin is arranged in the upper surface of the cutting table, and casting clamping mechanisms are arranged on the bin walls of the two sides of the receiving bin and used for positioning and clamping the metal castings to be cut. A sliding supporting mechanism is arranged on the upper surface of the cutting table, a cutting conversion mechanism is installed on the sliding supporting mechanism, the cutting conversion mechanism comprises cutting discs, and the symmetrical cutting discs are hung above the cutting table in a sliding mode through the sliding supporting mechanism and used for cutting and separating the positioned and clamped group tree type metal castings; through mutual cooperation of the casting clamping mechanism and the cutting switching mechanism, the metal casting and the pouring system can be rapidly cut and separated, and meanwhile, the situation that the normal use of the metal casting is affected due to the fact that residual waste materials on the metal casting are not completely cut can be prevented.

The invention discloses a clamping structure and method for a special-shaped metal piece, and relates to the technical field of metal piece clamping. According to the clamping structure and method for the special-shaped metal piece, when the metal piece is clamped, if the metal piece is a regular metal piece, a worker directly extrudes the two deflection clamping plates towards the metal piece, the clamping plate is passively deflected backwards, an extrusion spring rod drives the clamping plate to effectively clamp the metal piece, and the clamping effect is good. If the metal piece is of a special-shaped structure, after the clamping plate preliminarily clamps the metal piece, a third hydraulic cylinder is adjusted to drive a guide rail to deflect to the outer side of the metal piece, then a second hydraulic cylinder is adjusted to drive a lock frame to move to make contact with the outer side wall of the metal piece, and a rotating motor is started; and the rotating motor drives the lock frames to be finely adjusted, so that interaction force exists between the lock frames and the metal piece, the lock frames in the four directions are matched with the two clamping plates to achieve clamping of the special-shaped metal piece, the clamping firmness is improved, and the stability effect in the machining process of the special-shaped metal piece is ensured.

The invention relates to the technical field of dadoing machines, and discloses a gantry type metal sheet dadoing machine which comprises a dadoing bed, a movable frame movably arranged at the top of the dadoing bed, a movable seat movably arranged on the movable frame and a tool bit mounting seat movably arranged at the bottom of the movable seat. The dadoing tool bits are rotationally arranged in the tool bit mounting seat and are distributed in a linear array, and the switching control unit and the tool bit mounting assembly are arranged on the tool bit mounting seat. According to the gantry type metal sheet recessing machine, through rotation of the pushing disc, the clamping assembly slides on the rotating disc, then the connecting shaft is driven to rotate, the recessing tool bits are driven to rotate on the tool bit mounting bases, when the clamping assembly is connected with the rotating disc in a clamped mode, the rotating disc is limited, then the connecting shaft is limited, and switching of the recessing tool bits is completed; according to the dadoing tool bit switching device, the dadoing tool bit is switched, the switching process is fast and efficient, the flexibility of machining production is improved, and the working efficiency of a machine tool is improved.

The invention discloses a thread machining device for metal part machining, and relates to the technical field of metal machining equipment.The lower end of a lifting sliding plate is provided with an angle adjusting assembly, the upper end of the lifting sliding plate is fixedly provided with a rotating assembly, the rotating assembly is used for driving the angle adjusting assembly to rotate, and the angle adjusting assembly is provided with a thread machining assembly; a tapping cutter is detachably installed on the thread machining assembly. Transverse clamping assemblies used for transversely clamping a metal piece are installed at the two side ends of the main body base in the transverse direction. Longitudinal clamping assemblies used for longitudinally clamping the metal piece are installed on the transverse clamping assemblies. A clamping through hole is formed in the center of the main body base, and a three-jaw clamping seat used for clamping the tubular metal part is mounted in the clamping through hole; through the synergistic effect of the rotating assembly and the angle adjusting assembly, the tool can be positioned at will within the inclination range of 0-90 degrees, and multi-angle machining of a complex curved surface is achieved in cooperation with position adjustment of the arc-shaped guide rail.

The present invention relates to the field of laser welding equipment, and in particular to an environmentally friendly fully automatic laser welding device and method for metal steel plates, comprising a steel plate laser welding device, wherein the steel plate laser welding device comprises a casing, a workbench is installed at the front of the casing, a light-transmitting plate is installed in the middle of the workbench, a projection plate is arranged on the lower side of the light-transmitting plate, mounting frames are fixedly connected to both sides of the projection plate, the mounting frames are installed at the bottom of the workbench, a blackout curtain is slidably connected to the bottom of the workbench through a guide rail, the blackout curtain surrounds the mounting frame and the projection plate, industrial cameras are installed at the bottom of the mounting frame and the top of the casing, the industrial cameras are electrically connected to a control box, the control box is installed at the bottom of the casing, and a welding robot arm is arranged at the rear of the workbench. The present invention can effectively improve the absorption efficiency of laser energy by the steel plate to be welded during welding by spraying a black organic coating.

The invention discloses a power distribution line electric pole centralizer, and relates to the technical field of electric power erection assistion.The power distribution line electric pole centralizer comprises a solid base, two grafting plates are welded to the top of the solid base, a set of metal sliding rods are fixedly inserted between the opposite sides of the two grafting plates, and the outer surface wall of each metal sliding rod is movably sleeved with a hollow sliding sleeve; an assembling base table is fixedly installed between the tops of the set of hollow sliding sleeves, a bearing frame is fixedly installed at the top of the assembling base table, an intermittent correction mechanism is arranged at the top of the bearing frame and comprises two associated frames, and first L-shaped metal frames are welded to the front surfaces of the two associated frames; according to the mechanism, the mechanical transmission principle is adopted, electric pole inclination is utilized, a driving assembly rotates to generate angle data changes, related electrical components can rapidly analyze and judge, the electric pole inclination direction is determined, mechanical assemblies are controlled to operate, electric pole angle correction is automatically completed, and it is guaranteed that a target pole body can be in a vertical state all the time when equipment is straightened.

The utility model belongs to the technical field of metal heat treatment equipment, and discloses energy-saving metal heat treatment processing equipment which comprises a device main body, metal on a bearing plate can be subjected to heat treatment through an arranged heating plate, and after the metal heat treatment is finished, a threaded rod can be driven to rotate through a servo motor; further, a connecting block pushes a bearing plate to vertically ascend through a thread screwing-in relation, so that the bearing plate moves into a cooling cavity from a heating cavity, metal is cooled through a cooling fan on a mounting plate in the cooling cavity, and floating objects and dust in air can be filtered through filter screens arranged on two mounting frames; when the filter screen needs to be replaced, only a driving gear needs to be rotated, the driving gear drives two transmission sliding blocks to be far away from each other, the two transmission sliding blocks can push two mounting frames to be far away from each other through a connecting rod, then the two mounting frames are far away from the device body, and the filter screen on the mounting frames can be replaced.

The utility model relates to an enlarged type metal composite viscoelastic damper. The bottom of a metal damper is fixedly connected with an enlarged type viscoelastic damper. The metal damper comprises a T-shaped core plate, L-shaped restraining plates are fixedly connected to the two opposite sides of the T-shaped core plate in the vertical direction, friction areas are arranged between the tops, located on the vertical plane, of the L-shaped restraining plates and the T-shaped core plate, fixing areas are arranged between the bottoms of the L-shaped restraining plates and the T-shaped core plate, and energy dissipation webs are arranged on the portions, between the fixing areas and the friction areas, of the T-shaped core plate. The amplified viscoelastic damper comprises an upper connecting plate, an amplifying lever is hinged to the lower portion of the upper connecting plate, an inner steel plate is hinged to the lower portion of the amplifying lever, the inner steel plate is connected with an outer steel plate through a viscoelastic layer, and the outer steel plate is hinged to the amplifying lever through a fulcrum shaft. The defects of a metal damper can be overcome under small earthquakes, good energy consumption is achieved, the amplifying damper can be protected against excessive displacement and failure under large earthquakes, the damper consumes energy in a multi-stage mode, and the anti-seismic performance of the structure is improved. The components are connected through bolts, are highly assembled and are convenient to replace.

A method for friction stir forming a metal matrix composite (MMC) structure (76). The method includes the step of providing a substrate (12) comprising a metallic material and securing a preformed MMC layer (14, 16) comprising an MMC material in a position overlying at least a portion of the substrate (12). The method further includes the step of friction stirring the preformed MMC layer (14, 16) with a friction stirring tool (50) which includes a rotating probe (56), including locating the probe (56) at a stirring depth at which the probe (56) extends through the preformed MMC layer (14, 16) into a portion of the substrate (12) and passing the tool (50) through the preformed MMC layer (14) at the stirring depth to friction stir the preformed MMC layer (14, 16) and integrate the preformed MMC layer (14, 16) with the substrate (12).

The invention provides a double-curved-surface metal plate polishing device capable of being adjusted in a self-adaptive mode, and relates to the field of metal plate machining, the double-curved-surface metal plate polishing device comprises a polishing assembly, the polishing assembly is composed of a swing mechanism, a driving mechanism and an adaptive mechanism, and the polishing assembly can conduct polishing operation on a plane metal plate and a curved-surface metal plate in a self-adaptive mode; during polishing, it can be guaranteed that the polishing disc is always perpendicular to the metal plate, the polishing effect is good, meanwhile, the polishing pressure of the polishing disc can be freely adjusted and controlled, polishing operation on different types of metal plates is facilitated, and the problem that when the polishing device is used for polishing the double-curved-surface metal plate, due to the fact that the surface of the metal plate is curved or arc-shaped, the polishing effect is poor is solved. The problems that the grinding effect is poor and the shape of the surface of the metal plate may be damaged due to the fact that the polishing disc cannot be guaranteed to be perpendicular to the metal plate during grinding and polishing are solved.

The present disclosure relates to a fabrication and evaluation process for testing new metallic alloy chemistries and compositions for laser powder bed fusion (L-PBF). The new methodology is efficient and effective for new compositions with a minimal investment of generating large quantities of powder feedstock for required in conventional AM processing. The method allows for subsurface melting of the new alloy composition by varying the depth of penetration by a control of the input power level, power deposition rate, and rastering scan strategy. Post-mortem analysis of the subsurface microstructure permits an analysis of the durability and suitability of the new metallic alloy for this manufacturing mode. The method utilizes available infrastructure, technology, and characterization techniques.

According to the special-shaped metal product inner hole grinding device and method, the distance between double grinding heads is adjusted through a two-way lead screw, lifting feeding and differential rotation are combined, and efficient precision machining of a special-shaped inner hole is achieved. The device comprises an adjustable grinding head mechanism, a servo drive rotating unit and a sectional feeding system, and is suitable for batch production of complex inner holes.

The invention discloses a numerical control type metal powder compression molding device, and relates to the technical field of compression molding. The problem of machining efficiency is solved. The forming die and the portal frame are fixedly installed on the outer wall of the top of the base, a feeding mechanism is arranged on one side of the top of the forming die, the same set of pressing forming mechanism is arranged on the inner wall of the other side of the forming die and below the portal frame, and a discharging mechanism is arranged on the side wall of the forming die; and the pressing forming mechanism comprises a pressing die, a top die and a female die fixedly embedded in the inner wall of the forming die, the top die is movably matched with the interior of the female die, and the female die is of a cavity structure. The top die serving as a bottom support is connected with the hollow cylinder through the cavity pipe, and the gas control assembly is arranged at the bottom of the cavity pipe, so that after forming is finished, positive pressure provided by the gas control assembly is used for enabling the top die to ascend, metal materials are jacked, follow-up material taking is facilitated, and the machining efficiency is improved.

The utility model discloses a hollow shaft blank friction welding port which comprises a first hollow shaft and a second hollow shaft, the end face of the first hollow shaft is a first welding face, the end face of the second hollow shaft is a second welding face, the first welding face corresponds to the second welding face, a first prefabricated groove is formed in the inner circumference of the first welding face, and a second prefabricated groove is formed in the inner circumference of the second welding face. A first prefabricated groove is formed in the inner circumference of the first welding face, a second prefabricated groove is formed in the inner circumference of the second welding face, the first prefabricated groove corresponds to the second prefabricated groove, and through the asymmetric structure of the first prefabricated groove and the second prefabricated groove, different first hollow shafts and second hollow shafts are correspondingly adjusted in a targeted mode. The inner circumferential diameter of the plastic metal and the inner circumferential diameter of the second hollow shaft are kept consistent, the plastic metal is prevented from protruding to form large flashes, the speed that the plastic metal on the two sides is converted into high circumferential expansion due to opposite pressure in the friction heat production stage is effectively reduced, and the filling rate of the plastic metal is improved.

The present invention relates to the field of laser welding equipment, and particularly relates to an environment-friendly fully automatic laser welding device and method for metal steel plates, including a steel plate laser welding device. The steel plate laser welding device includes a machine shell. A workbench is installed at the front part inside the machine shell. A light-transmitting plate is installed in the middle of the workbench. A projection plate is arranged on the lower side of the light-transmitting plate. Installation frames are fixedly connected to both sides of the projection plate, and the installation frames are all installed at the bottom of the workbench. A light-shielding curtain is slidably connected to the bottom end of the workbench through a guide rail, and the light-shielding curtain surrounds the installation frames and the projection plate. Industrial cameras are installed at the bottom of the installation frames and the top inside the machine shell, and the industrial cameras are electrically connected to a control box. The control box is installed at the bottom inside the machine shell. A welding robotic arm is arranged at the rear part of the workbench. In the present invention, the sprayed black organic coating can effectively improve the absorption efficiency of the laser energy by the steel plate to be welded during welding.

The present invention discloses a welding device for welding a metal basket. The metal basket includes an L-shaped metal bar, a metal hoop, and a bottom ring. The metal bar includes a first bend and a second bend. The welding device comprises: a horizontal moving mechanism; a fixing device disposed on the horizontal moving mechanism, the fixing device being used to fix the metal bar and the metal hoop and capable of twisting the second bend; a first welding mechanism disposed at one end of the horizontal moving mechanism in the conveying direction and used to weld the first bend to the bottom ring; and a second welding mechanism disposed on both sides of the horizontal moving mechanism in the conveying direction and used to weld the second bend to the metal hoop. The welding device proposed by the present invention can automatically weld metal baskets, reducing labor costs.

The invention discloses a self-correcting forging press for a metal plate, which comprises a forging press body, a clamping mechanism and a pushing mechanism, the clamping mechanism is arranged on a pedestal piece, and the clamping mechanism is in butt joint with a first conveying belt for automatically picking and clamping a metal aluminum forging plate blank during feeding; the clamping mechanism is arranged on the first conveying belt and used for automatically positioning and discharging metal aluminum forging plate blanks before being in butt joint with the forging press body for forging and pressing, the clamping mechanism is used for automatically discharging formed metal aluminum forging plates after being in butt joint with the second conveying belt for forging and pressing, and the pushing mechanism is arranged on the first conveying belt and used for automatically and accurately filling the metal aluminum forging plate blanks into the clamping mechanism. According to the self-deviation-rectifying forging press for the metal plate, automatic picking, clamping, positioning and discharging of a metal aluminum forging plate blank are achieved, automatic discharging of a formed metal aluminum forging plate is achieved, the automation performance is guaranteed, in addition, automatic deviation rectifying treatment of the metal aluminum forging plate blank in the conveying process is achieved, and the filling accuracy in the picking process is guaranteed.

The invention discloses a casting defect diagnosis and closed-loop control system and method based on causal anti-fact and multi-agent arbitration. The system collects multi-source data such as temperature, flow, cooling, vision and the like, learns a causal structure, establishes an agent model and solves an adjustment scheme which enables the defect probability to be remarkably reduced in a security domain; performing evidence verification on the suggestions through verifiable generation and a knowledge graph, fusing vision, process, metallurgy and simulation agent arbitration, executing in an edge-cloud double ring, and triggering security rollback abnormally; and when the uncertainty is increased, active learning and incremental updating are implemented. According to the scheme, the defects of shrinkage cavities, air holes and the like can be remarkably reduced, the first-pass yield is improved, and the method is suitable for aluminum alloy sand molds, metal molds and low-pressure casting production lines.

The invention discloses an environment-friendly metal combined smelting furnace, relates to the field of metal smelting equipment, and aims to solve the problems of low efficiency, heat energy waste, waste gas pollution, inconvenience in operation and the like of a traditional smelting furnace. The environment-friendly metal combined smelting furnace comprises a smelting furnace support, a rotatable high-temperature smelting furnace is arranged on the support, and a liftable metal preheating furnace is arranged above the support; a smelting crucible and a combustor are arranged in the high-temperature smelting furnace, and a multi-layer heat insulation structure is arranged on the outer side; a preheating box is arranged in the metal preheating furnace, forms an exhaust cavity with the furnace wall, and is butted with the high-temperature smelting furnace through a waste gas guide pipe to realize secondary combustion of waste gas; according to the equipment, waste heat recovery and waste gas harmless treatment are achieved, the energy utilization rate and the environmental protection property are improved, operation is convenient and fast, and the equipment is suitable for smelting of various kinds of metal.

The invention relates to a forming method of a reinforced carbon fiber thermoplastic and thermosetting type composite material appearance part, which is characterized by comprising the following steps of: stamping and forming a metal plate, (1) carrying out sand blasting treatment on the surface of a metal stamping part, (2) blanking a thermosetting carbon fiber prepreg through an automatic blanking machine according to a blanking drawing, (3) pre-paving and forming a material sheet on the required side of the stamping metal part, and (4) pre-paving and molding the material sheet on the required side of the stamping metal part. (5) putting the composite part into an injection mold for thermoplastic forming of required inverted buckles, buckles, rib positions, metal embedded parts and the like; (6) putting the composite part subjected to thermoplastic forming into a shaping tool for shaping and trimming; and (7) obtaining the reinforced carbon fiber thermoplastic and thermosetting composite material appearance part. Wherein a metal stamping layer subjected to sand blasting treatment is added between the thermosetting layer and the thermoplastic layer; therefore, two materials with insufficient bonding strength can be better bonded together. The method has the advantages that the appearance size of the product can be more accurately guaranteed by paving the thermosetting carbon fibers on the metal stamping part, the bonding strength between the thermoplastic part and the thermosetting part can be improved by adding the metal carrier between the thermoplastic part and the thermosetting part, and the excellent performance of the thermoplastic material and the thermosetting material can be perfectly fused; the original linking mode of a thermosetting material part is broken through, and the linking mode of the thermosetting part has N possibilities.

The invention discloses a wall type Z-shaped metal torsion tube damper anti-seismic system and method. The wall type Z-shaped metal torsion tube damper anti-seismic system comprises a frame beam, a frame column, a cantilever wall and a Z-shaped metal torsion tube damper. The frame beams and the frame columns are connected with a building, the cantilever walls are connected with the frame beams, and the Z-shaped metal torsion tube dampers are arranged between the paired cantilever walls and connected with the cantilever walls so as to dissipate energy transmitted by the cantilever walls. According to the damper anti-seismic system, the Z-shaped metal torsion tube damper is arranged to replace a traditional mild steel metal damper and a viscous damper to conduct damping design of a building structure, the problem that the low-cycle fatigue performance of the traditional metal damper is poor is solved, the oil leakage risk of the viscous damper is avoided, and the anti-seismic performance of the building structure is improved. Moreover, due to the structural design in the damper, the influence of the bending and shearing effect on the deformation of the torsion tube under the action of an axial load is eliminated, so that the section of the torsion tube is always kept a stable circular section in the hysteresis energy consumption period of the torsion tube, and the energy consumption efficiency is ensured.

The utility model relates to the technical field of cutting and cooling devices, and provides a novel metal product cutting and cooling device which comprises a base, the top and the bottom of the base are fixedly connected with a supporting frame and a water tank through bolts respectively, an air cylinder is installed on the top of the supporting frame, and the output end of the air cylinder is fixedly connected with a cutting frame. A cutting shaft is rotationally installed on the cutting frame, a cutting motor is installed on one side of the cutting frame, the output end of the cutting motor is connected to one end of the cutting shaft through a coupler, cooling water is sprayed through a water pump by arranging a filter plate, the water pump and other structures, and then it is guaranteed that effective cooling is conducted during cutting work; in the cutting process, chippings fall on the filtering plate through the square groove and flow into the collecting box, chipping collection is achieved, and therefore the device is more convenient to clean and better in quality, and through the technical scheme, the problems that in the prior art, quality is poor and efficiency is low are solved.

The feeding device for the double-cone rotary drying machine comprises a drying machine body, a metal disc, a feeding cover, an arc-shaped welding plate and a spring clamping plate, a double-cone rotary drying tank is installed in the drying machine body, the metal disc is fixed to a feeding port of the double-cone rotary drying tank, and a small metal bearing is horizontally installed on the left side of the upper end of the metal disc. A fixed rod is longitudinally fixed in an inner ring of the small metal bearing, a feeding cover is fixed at the other end of the fixed rod through a welding block, and the design solves the problems that in the using process of an original double-cone rotary drying machine, a cover on a feeding port is mostly fixed through bolts, so that the feeding process is tedious, great inconvenience is brought to feeding work, and the working efficiency is high. The rotary magnetic attraction and spring clamping type limiting structure is good in practicability, the feeding cover can be rapidly mounted or dismounted, the subsequent work use of workers cannot be affected, and the rotary magnetic attraction and spring clamping type limiting structure is convenient to use.

The utility model provides a welding positioner, which relates to the technical field of positioners, and comprises a connecting plate, two ends of the connecting plate are fixedly connected with convex plates, the surfaces of the convex plates penetrate through and are rotatably connected with first rotating rods through bearings, a square cavity is arranged in one of the convex plates and is positioned at the first rotating rod, and the first rotating rods are arranged in the square cavity. Wherein the surface of one first rotating rod is sleeved and fixedly connected with a worm gear, the lower portion of the worm gear is connected with a worm in a meshed mode, a rotating plate is arranged between the protruding plates, the two ends of the rotating plate are fixedly connected with one ends of the first rotating rods, and a convex groove is formed in the top of the rotating plate. Steel pipe type metal pieces are placed on the supporting arc plate, the bidirectional screw can be driven to rotate through the third motor, the bidirectional screw rotates to drive the clamping arc plate to move through the sliding block, and the effect of clamping and fixing the steel pipe type metal pieces can be achieved; and meanwhile, steel pipe type metal pieces with different sizes and diameters can be clamped.