262results about How to "Improve the uniformity of force" patented technology

The invention discloses a novel vertical-shaft fan structure of vertical shaft wind generating set, wherein the novel vertical-shaft structure is designed according to the unique blade operation characteristic of a vertical-shaft fan. In the invention, by virtue of the direct correlation among blades, a compact main shaft assembly, an installation mode and other construction, the availability factor of a wind wheel support part is exponentially improved, the power transmission paths of the blades are scattered, and the length of the arm of force of a transmission component is decreased, so that the stress uniformity is improved, the vibration source of the blades is removed, thus the intensity requirement of the wind wheel support part is exponentially reduced, and the intensity requirement of a hub and a main shaft is reduced at the same time, and the transportation and installation of the fan are convenient. Therefore, the fan structure in the invention has the advantages of small centrifugal load, light weight, easiness for installation, easiness for transport and low cost.

The invention relates to a finger-shaped connector of an aramid fiber conveying belt and a preparation method of the finger-shaped connector. The preparation method comprises the following steps: stripping coverage glue, cleaning residual glue, cutting finger shapes, coating mucilage, splicing the finger shapes, forming and coating glue, reinforcing by a fabric layer, covering glue, and sulfurizing a specimen, thereby obtaining the finger-shaped connector on the aramid fiber conveying belt. According to the invention, the problems of extraction, edge wrapping, water seepage, glue failure of seams and the like of the connector of the conveying belt in the dynamic running process are solved; a certain gap is reserved in splicing the finger shapes so as to guarantee that the pasting glue can seep fully toward the finger shapes, the extraction force is increased, the stress uniformity is improved, and the phenomena of extraction and cracking which are caused by stress uniformity are prevented; the length of the stripped coverage glue is greater than the length of each finger by 5cm, and the connector glue and the coverage glue are lapped into an oblique slope, so that the phenomenon of water seepage of a framework material because of glue failure of the seam is prevented, and the service life of the connector of the aramid fiber conveying belt is prolonged greatly.

The invention belongs to the technical field of battery manufacturing of electric motor cars and in particular relates to an improved battery; the battery comprises a shell, an upper cover, a pole rod, a lithium battery and an electric conducting bar; the shell is a cuboid shape, and the opening of the shell is sealed by the upper cover, and a strengthening rib is formed by the outer wall of the shell forms, and the lithium battery is arranged in the shell; the pole rod is embedded on the upper cover, and the outer end of the pole rod is connected with the electric conducting bar; the strengthening rib is transversely and uniformly distributed by the way that the strengthening rib is parallel to the edge of the opening of the shell. The improved battery has the advantages of high-strength shell, good heat radiating performance, simple structure, high using safety, high sealing property, long service life and the like.

The invention discloses a steel-mesh separation wall and relates to a wall body for a building, in particular to integral seismic resistant wall bodies inside and outside the building. The steel-mesh separation wall comprises construction columns and one or more mesh pieces; the mesh pieces are connected to form a whole by using the construction columns; steel mesh surfaces and frameworks form the mesh pieces; foam concrete is arranged in the mesh pieces; the steel mesh surfaces are positioned on the outer surfaces of the frameworks; stressed surface ribs, stressed ribs and support frames form the frameworks; the support frames are of a continuous W shape; the top ends of the W shape are inwards concaved; the mutually-parallel stressed ribs are respectively positioned in the inner concaves of the continuous W shape and are fixedly connected with the support frames; the stressed surface ribs are mutually perpendicular to the stressed ribs; one side of each stressed surface rib is fixedly connected with the corresponding steel mesh surface; and the other side of each stressed surface rib is fixedly connected with the corresponding stressed rib. The stell-mesh separation wall disclosed by the invention has the advantages of convenience for mounting, simpleness for construction and strong seismic resistant capability.

The invention provides an efficient ultra-precise polishing method based on a shear expansion effect. Abrasive particles, a dispersing agent and an active agent are added into a viscoelastic materialwith non-Newtonian fluid characteristics to prepare a flexible fixation grinding tool, a viscoelastic gum base accounts for 50%-85% of the grinding tool by mass, the abrasive particles account for 10%-45% of the grinding tool by mass, the particle size of the abrasive particles ranges from 0.05-50 microns, the dispersing agent accounts for 1-5% of the grinding tool by mass, and the active agent accounts for 1-5% of the grinding tool by mass. In the polishing process, the contact area between the grinding tool and a workpiece generates a shear expansion effect under the action of shear force, an instantaneous expansion ejection phenomenon and a curing effect are present, and the viscosity, the hardness and the internal resistance of the grinding tool materials are increased. The stress uniformity of the surface of the workpiece is improved, the contact positive pressure of the abrasive particles and the workpiece is increased, so that the removal rate of the materials in the polishing process is increased, damage of local stress concentration to the surface of the workpiece is reduced, and the effect of efficient and high-quality polishing is achieved.

The present invention discloses a laminating apparatus for a solar assembly. The laminating apparatus comprises a substrate and a pressing plate; a hydraulic cylinder drives the pressing plate to move up and down, so that the substrate and the pressing plate can be pressed together; the bottom surface of the pressing plate is provided with a silica gel film; the surface of the substrate is provided with a plurality of pushing pins; a cushion is laid on the pushing pins; mounting holes are arranged formed in the substrate; the pushing pins are installed in the mounting holes through lifting rods; the bottoms of the lifting rods are provided with heat insulating sleeves; electric heating wires are arranged in the substrate; the bottoms of the mounting holes are provided with spiral oil guiding tubes; annular grooves are formed at the tops of the mounting holes; the edges of the pushing pins are provided with metal elastic sheets through first springs; the external sides of the metal elastic sheets are provided with silica gel dumping cushions; the edge of the pressing plate is provided with slide rails; a clamping block is slidingly arranged in each slide rail; each clamping block is connected with a corresponding first air cylinder; and the clamping blocks are fixedly held at the edge of the silica gel film. With the laminating apparatus of the invention adopted, defects in the prior art can be eliminated, and the heating and pressure uniformity of components in a laminating process can be improved, and the yield of products can be improved.

The invention relates to a double-bearing simply supported beam type rock breaking hob and a mixed PDC drill bit thereof.The rock breaking hob comprises a spherical body, a through hole for a supporting shaft to penetrate through is formed in the center of the body, multiple rock breaking elements are arranged on the outer edge of the body, and the two ends of the supporting shaft are supported at the two ends of the through hole of the rock breaking hob through bearings respectively and penetrate out; the mixed PDC drill bit comprises a drill bit body, and multiple pairs of blades are distributed at the front end of the drill bit body, and rock breaking hobs are arranged between the blades or at the crown portions of the blades.Therefore, the supporting shaft has the function of a simply supported beam during work and bears shear force and torque of the rock breaking hobs during work, in this way, defects in the prior art are overcome, the advantage of breaking rock through fracturing of the rock breaking hob and the advantage of breaking rock through cutting of the PDC drill bit are effectively combined, and rock is fractured and cut at the same time, so that the drill bit has adaptability to diversity of a stratum in exploiting operation, drilling speed and efficiency are improved, and the service life of the drill bit is effectively prolonged.

The invention belongs to the technical field of electromagnetic wire production, and discloses a winding device for electromagnetic wires, in order to solve the problem that the tightness degree of the electromagnetic wires in the winding process of the prior electromagnetic wires is inconsistent. The invention comprises a base, the base is provided with a rotating shaft and a driving motor for driving the rotating shaft to rotate, A bobbin for winding the electromagnetic wire is sleeved on the rotating shaft, characterized by, a lead screw is fixedly mounted on the base above the bobbin, Thebase is provided with a first servo motor for driving the lead screw to rotate, the lead screw sleeve is provided with a lead screw nut capable of moving on the lead screw, the lead screw nut is fixedly connected with a mounting plate, the mounting plate is provided with a wire inlet head for entering the electromagnetic wire, bearings are installed on both sides of the base, and the two ends of the rotating shaft are sleeved on the bearings.

The invention relates to a bridge lowering and dismantling device based on movable supporting. The bridge lowering and dismantling device comprises a hoisting lifting mechanism, two groups of splicingtype supporting frames and two groups of connecting and supporting cross beams. The hoisting lifting mechanism is mounted on the connecting and supporting cross beams. The two groups of splicing typesupporting frames are symmetrically arranged under the two ends of the supporting cross beams and are detachably and fixedly connected with the two ends of the supporting cross beams. The bridge lowering and dismantling device further comprises a movable conveying mechanism which is used for moving and bearing the splicing type supporting frame and the dismantled beam body. The invention furtherprovides a bridge lowering and dismantling construction method based on the dismantling device. According to the invention, less road construction time is occupied; traffic influence is small; bridgedemolition and transportation of dismantling parts can be safely and quickly completed; and the device is wide in applicability and less in dust pollution in use.

The invention discloses a carbon fiber board prestress tension clamp which comprises a clamping sleeve with a wedge-shaped through hole, a wedge-shaped clamping piece used for clamping a carbon fiber plate, a connecting plate detachably fixedly arranged at the big opening end of the wedge-shaped through hole, and a tension rod fixedly arranged on the connecting plate, wherein the wedge-shaped clamping piece is used for clamping the carbon fiber plate and then is wedged into the clamping sleeve to be matched with the wedge-shaped through hole. The carbon fiber board prestress tension clamp is characterized in that the wedge angle of the wedge-shaped clamping piece is more than that of the wedge-shaped through hole, which can lighten the stress concentration at the small end of the wedge-shaped clamping piece, is beneficial to transferring the tension force inside the clamp and prevents the carbon plate from being broken during the tesnion. The cylindrical clamping sleeve is adopted to ensure that the thickness of the clamping sleeve at the middle along the width direction of the wedge-shaped clamping piece is biggest, which can reduce the transverse deformation of the clamping sleeve, is beneficial to the uniform force of the carbon fiber plate in the width direction and prevents carbon fibers at the side of the carbon fiber plate from being broken, therefore, the clamp has better clamping property. A pre-ejecting and ejecting-retreating device is matched with the clamp, therefore, the prestress tension operation with high-quality and high speed and efficiency of the carbon fiber plate can be realized.

The invention relates to the field of aerospace focusing, in particular to a positive and negative helical focusing mechanism. The positive and negative helical focusing mechanism comprises a reflective mirror, a reflective mirror rear panel supporting structure, a bottom board structure, a guide rod structure, a positive and negative helical lead screw structure, two connecting rods, a stepping motor and a multi-turn absolute encoder, wherein the reflective mirror is arranged on the reflective mirror rear panel supporting structure; the reflective mirror rear panel supporting structure is arranged on the bottom board structure; and the positive and negative helical lead screw structure is arranged below the bottom board structure, one end of the positive and negative helical lead screw structure is connected with the stepping motor and the other end of the positive and negative helical lead screw structure is connected with the multi-turn absolute encoder, and the middle part of the positive and negative helical lead screw structure is connected with the reflective mirror rear panel supporting structure through the connecting rods. The stress uniformity of the whole focusing mechanism is improved, the lost motion between lead screw nut mechanisms and the mirror surface shaking quantity of the reflective mirror are reduced, the stability of the movement of the focusing mechanism is increased, and the real-time and controllability of the focusing are improved.

The invention discloses an assembling device and method for a mobile terminal, relating to the manufacture technology field of the mobile terminal. The assembling device and method can solve a problem that a bottom housing is easy to scratch when the bottom housing is assembled with a battery cap in an artificial mode. The assembling device of the mobile terminal comprises a bottom housing bearing the mobile terminal and a bearing table of the battery cap and a pressing head pressing the battery cap and the bottom housing together; a pressing face of the pressing head is opposite to the bearing surface of the bearing table in a parallel manner; the pressing head can perform reciprocating movement relative to the bearing table in a direction perpendicular to the bearing face of the bearing table; when the battery cap is assembled with the bottom housing, the pressing head presses the battery cap and the bottom housing; the battery cap and the bottom housing are maintained parallel; and applied force between sections of the battery cap and the bottom housing is uniform, which prevents the bottom housing from scratching. The assembling device for the mobile terminal is used for assembling the battery cap and the bottom housing for assembling the mobile terminal.

The invention provides an outer circle turning liquid plastic core clamping device suitable for a national IV air cylinder sleeve, which can clamp an air cylinder sleeve stably. A workpiece is stressed uniformly in the circumferential direction and is high in machining precision, and deforms slightly. The outer circle turning liquid plastic core clamping device comprises a machine tool main shaft; the machine tool main shaft is connected with a mandrel through a flange plate; a hydraulic oil cylinder is arranged in an inner cavity of the machine tool main shaft along the axis; a piston pin is arranged in the inner cavity of the machine tool main shaft along the axis; the hydraulic oil cylinder is connected with the piston pin through a hydraulic cylinder push rod; a communicating device cavity which extends to the outer surface of the mandrel is arranged in the inner cavity of the mandrel; a plurality of sections of expansion sleeves are arranged on the outer surface of the mandrel along the axial direction; the expansion sleeves coat the outer surface of the mandrel; the inner wall of each expansion sleeve is communicated with the communicating device cavity; the communicating device cavity is filled with liquid plastic.

The invention discloses an automobile rear frame assembly and an automobile, relates to automobile parts techniques and solves the problem that the application of the prior rear frame assembly causes inefficiency of collision energy absorption and ease of oil tank damage and decreases safety of the automobile. The automobile rear frame assembly according to the embodiments comprises a rear impact beam; rear rail structures identical to each other are fixed to two ends of the same side of the rear impact beam; each rear rail structure comprises an outer longitudinal side member and an inner longitudinal middle member, the longitudinal side member and the longitudinal side member gather at the rear impact beam and then split and extend in parallel; the part, from the gathering position to the extension end, of each longitudinal side member is in arc structure, and the part, from the gathering part to the extension end, of each longitudinal middle member is in an arc structure; a rear cross beam is fixed between the longitudinal side members; the longitudinal middle members extend to the rear cross beam from the gathering positions; an oil tank is fixed on the longitudinal middle members; a connecting beam is fixed between the longitudinal middle members, corresponding to an oil tank area. The automobile rear frame assembly is mainly applied to automobiles.

The invention relates to a three-dimensional spacer fabric reinforced space membrane material, a preparation method and a processing device thereof. The preparation method includes: in a three-dimensional spacer fabric running process, firstly applying tension along the fabric running direction and maintaining the tension unchanged, making spacer yarns in the fabric at a vertically straight state,then disposing an opening with a length equal to the width of the fabric at the fabric top cloth surface along a direction perpendicular to the fabric running direction, letting the upper layer and lower layer of the fabric staggered horizontally and the spacer yarns at an inclined tense state, and finally compounding the composite fabric with a membrane material to obtain the three-dimensional spacer fabric reinforced space membrane material. The processing device includes a cloth feeding roll, a tension roll, a sizing mechanism, a shaping mechanism, a lamination mechanism, a post-treatmentmechanism and a collection mechanism that are arranged in sequence. The final product has a composite layer structure including a plurality of membrane materials layers and a fabric layer between themembrane material layers, and the spacer yarns in the fabric can move freely and have no adhesion. The preparation method provided by the invention is simple in process, the processing device has a simple structure, and the product has excellent mechanical properties.

The invention discloses an outer plate stamping process. The outer plate stamping process comprises the following steps: S01: drawing: drawing a base material into a box-shaped component; S02: trimming and punching: adopting non-circumferential trimming, reserving a convex lug on a component, and punching a positioning hole in the convex lug; S03: laterally flanging and laterally trimming: putting a component processed and molded in the step S02 onto the convex mould, and selecting a cylindrical dowel pin for a lower mould base, carrying out left-right-end lateral flanging and front-end secondary trimming on the primary of the component after the positioning hole and the cylindrical dowel pin are inserted and positioned; and S04: laterally flanging and laterally trimming: carrying out front-end secondary lateral flanging after the cylindrical dowel pin penetrates through a cutter block of a low-mould trimming concave mould and is inserted and positioned with the positioning hole, and cutting off the convex lug. In this way, the stamping process increases the steps of reserving the convex plug and punching the positioning hole in the convex leg, so that component positioning in subsequent steps is guaranteed, and the positioning reliability is improved.

The invention discloses a construction method of a complex space truss integral hoisting system. The hoisting system comprises an external ring type truss, a main truss connected to the interior of the ring type truss, a coupling beam connected between the ring type truss and the main truss, truss columns connected to the joint of the main truss and the ring type truss, and hoisting frames arranged on the main truss and the ring type truss correspondingly. The overall lifting process of the space truss is simulated through three-dimensional software such as BIM software, and on-site lifting construction can be effectively guided; through pre-arching compensation and monitoring deformation control in the process, the stress uniformity and the mounting precision in the lifting process can be effectively guaranteed; the space truss is partitioned, so that unit splicing is facilitated, the mounting time can be guaranteed, and the mounting precision can also be guaranteed; through overall trial lifting and graded lifting, the installation space of lifting equipment is met, synchronous control during lifting is facilitated, and the in-place installation precision is guaranteed.

The invention belongs to the field of fuel cells, and discloses a visualized fuel cell device. The visualized fuel cell device comprises a cathode flow field unit, the cathode flow field unit is conductive; an MEA membrane electrode, wherein the upper surface of the MEA is laminated with the bottom surface of the cathode flow field unit; and an anode flow field unit, wherein the top surface of theanode flow field unit is laminated with the lower surface of the MEA, the anode flow field unit is conductive, at least one of the anode flow field unit and the cathode flow field unit is transparent, and the top surface of the anode flow field unit and the bottom surface o the cathode flow field unit are respectively provided with grooves to form a flow path and form a ridge. The flow path is atransparent flow path by arranging at least one of the anode flow field unit and the cathode flow field unit to be transparent, a high-speed camera equipped with a microscope head is adopted to alignwith an area to be shot to achieve the visualization of the top portion or the bottom portion and the side of the flow path and achieve the visualization of the flow state and the distribution of twophase flows in the fuel cell.

The invention discloses a two-way massager with a buffer function. The two-way massager comprises a fixing block, connecting blocks, fixing brackets and massage rollers, wherein the massage rollers are arranged under the fixing brackets, the fixing brackets are symmetrically arranged under the connecting blocks, the connecting blocks are symmetrically arranged under the fixing block and movably connected with the fixing block, each massage roller is internally provided with a liquid storage chamber and a liquid discharging chamber, each liquid discharging chamber is internally provided with aliquid outlet protrusion and a spring, the bottom of each liquid outlet protrusion is provided with a first limiting plate, and the two sides of each liquid discharging chamber are provided with liquid outlet holes communicated with the corresponding liquid storage chamber; the fixing block is internally provided with a buffer chamber, the buffer chamber is internally provided with a second limiting plate and a plurality of layers of rubber mats, a buffer hole is formed between every two adjacent rubber mats, and the second limiting plate is arranged under the rubber mats. When the two-way massager is used, an auxiliary reagent can be discharged to achieve an effect of massage aiding, thereby improving the massage efficiency; the massager has buffer performance, thereby avoiding the unevenforce caused by the unevenness of the body surface.

The invention relates to a circuit board and a drilling method of the circuit board. The circuit board is drilled to form the first hole, the hole diameter of the first hole is smaller than that of the target hole, and when the second hole is drilled, a part of material is cut by drilling the first hole, so that the chip removal requirement for drilling the second hole is reduced; meanwhile, as the drilling area of the first hole is located in the drilling area of the second hole, the hole wall of the first hole can be used for providing supporting and guiding effects for drilling of the second hole, and the breaking risk of the drill bit is reduced. Due to the fact that the hole depth of the first hole is smaller than that of the target hole, the chip removal requirement for drilling thefirst hole and the blade length requirement of the drill bit are lowered, and the problem that in the process of drilling the first hole, the drill bit is broken due to the large drilling depth or chip removal problem of the drill bit is effectively solved. According to the drilling method of the circuit board, especially in the machining process of the circuit board with the high thickness-diameter ratio, the target hole can be formed only through two drilling steps, the drilling steps are simplified, the drilling efficiency is improved, and the production efficiency of the circuit board is improved.

The invention provides a preparation method of a circular truncated cone-shaped side net for a semi-submersible aquaculture platform. The preparation method comprises anti-fouling monofilament bundlepreparation, anti-fouling net sheet preparation, and circular truncated cone-shaped side net preparation. Preparation raw materials comprise PP resin, dioctyl phthalate, polyethylene glycol fatty acidester, cetyl phosphate, a grafted polyguanidine salt / polyethylene granular material, and surface modified copper-nickel alloy nanoparticles. When the anti-fouling net sheet is prepared, first the antifouling monofilament bundle is twisted to obtain an antifouling strand with the Z twist direction, then three antifouling strands with the Z twist direction are processed into an antifouling twistedthread with the S twist direction, then the antifouling twisted thread with the S twist direction is processed into a net sheet with double dead knots, and finally the net sheet is subjected to heat-setting with 0.22 times the longitudinal breaking strength of the net sheet as a pre-tension. When the circular truncated cone-shaped side net is prepared, knotting is performed in a circulation mannerof "single dead knot-single dead knot-double dead knot-double dead knot", then a net sheet is subjected to fan ring-shaped cutting, edge line and net line assembly, and edge strengthening, then mother lines at the left and right side of a fan ring-shaped net sheet are butted and stitched, and double dead knots are knotted at the same distance when butting and stitching are performed.

An eye massager comprises two base plates, wherein the inner ends of the two base plates are hinged together, the outer sides of the two base plates are in covered connection with an outer plate respectively, a soft adhesive layer is connected to the back side of each base plate, and air bags are arranged between the soft adhesive layers and the base plates and are communicated with an air pump. The eye massager is characterized in that two groups of columnar massaging heads are integrally formed on the outer surfaces of the soft adhesive layers, are arranged at intervals in a circular mode and are used for pressing the eyes at eye outer-contours of a human body under the pushing of the air bags. Two close main massaging heads in the two groups on the soft adhesive layers are greater than other massaging heads on the soft adhesive layers in height, and the two main massaging heads are used for abutting and pressing the eye socket positions of the human body under the pushing of the air bags. The eye massager has good massaging comfort to the eyes and can ensure a massaging effect.

The invention discloses an anti-theft envelope cash loading device. The anti-theft envelope cash loading device includes a gate mechanism, a channel and a cash box; the lower inlet of the gate mechanism is connected with the upper part of a channel; the lower end of the channel is connected with the upper part of the cash box; according to the gate mechanism, a crank is driven to move through a driven gear, and under the action of the crank, a gate can be controlled to slide back and forth in a gate frame; and according to the cash box, in the push movement of a low movement, an unlocking slider is controlled to move through an unlocking push rod, a rack is controlled to move through an opening and closing push rod, and therefore, a cash box door can be controlled to rotate and move, and the cash box door can be opened. The gate mechanism of the anti-theft envelope cash loading device of the invention has the advantages of simple and compact structure, small opening and closing range and small occupied space; the envelope space of the gate can be reduced, and the gate can be uniformly stressed, the stability and reliability of the gate are high; and an unlocking mechanism is simple, convenient and practical, and can store banknotes and coins of any denominations.

A method for manufacturing an integral wire mesh includes steps: 1 weaving a wire mesh by the aid of existing weaving technology; 2 performing pretreatment; 3 realizing electroplating or chemical plating in a plating tank for a set time period; and 4, washing by the aid of water, drying and coiling. A method for realizing pretreatment includes (1) removing oil and washing by the aid of water by a chemical method or removing oil by a physical method; and (2) pickling or washing by the aid of water as needed after the step (1) is realized. Activation treatment can be carried out before chemical plating. An obtained plating can consist of single metal such as nickel or copper or silver or tin or iron or chromium and the like, or alloy such as nickel-phosphorus alloy or nickel-boron alloy or tin-lead alloy and the like. A chemical plating consists of single metal such as nickel or copper or silver or tin or iron or chromium and the like, or alloy such as nickel-phosphorus alloy or nickel-boron alloy or tin-lead alloy and the like. Warps and wefts of the wire mesh are integrally covered by means of electroplating or chemical plating, stress uniformity and tensile strength are improved, and integral wire meshes with optional transmittance can be prepared.

The invention relates to soles, and provides novel damping soles and shoes having the same, wherein the soles have elastically damping and stably supporting functions, are simple in structure and convenient to manufacture, and are suitable for mass production. Each novel damping sole comprises a middle sole and a large sole disposed under the middle sole. The lower surface of the middle sole is provided with a plurality of lengthwise raised lines and a plurality of transverse raised lines, and crosspoints of the lengthwise raised lines and the transverse raised lines are provided with spherical bumps. Positions, corresponding to the spherical bumps, of the upper surface of the large sole are provided with damping columns, the upper end of each damping column is provided with a spherical containing opening which wraps each spherical bump, the outer wall of each damping column is provided with first ring stages which are sequentially disposed in the axial direction. The upper surface of the large sole is provided with damping column sleeves covering the outsides of the damping columns, and each damping column sleeve and the each damping column are coaxial, the inner wall of each damping column sleeve is provided with second ring stages which are sequentially disposed in the axial direction, the internal circumference of the second ring stages surrounds the out wall of each damping column, and the second ring stages are arranged between adjacent first ring stages of damping columns.

The invention provides stainless steel air duct machining and welding equipment, and belongs to the technical field of air duct welding, the stainless steel air duct machining and welding equipment comprises a welding machining table, a rectangular welding track is arranged on the welding machining table, a telescopic mounting seat is fixedly arranged on the welding machining table, and an inner supporting anti-deformation part is connected to the telescopic mounting seat; the telescopic mounting base is used for controlling the inner supporting anti-deformation part to do telescopic motion towards the rectangular welding track, the inner supporting anti-deformation part comprises main bearing plates which are symmetrically arranged, inner edge supporting units are symmetrically arranged on the opposite faces of the main bearing plates in a sliding mode, the number of the inner edge supporting units is four, and the inner edge supporting units are distributed on the corresponding faces in a rectangular shape. The stainless steel air duct machining and welding equipment is used for attaching, tightly supporting and fixing a stainless steel air duct from the inside, has the advantages of being good in fixing effect, high in stress uniformity, good in deformation prevention effect and high in welding efficiency, effectively improves the welding convenience and welding quality, can be suitable for stainless steel air ducts of different sizes, and is suitable for popularization and application. And the application range of the invention is correspondingly improved.