31 results about "Sheet steel" patented technology

This invention discloses a method for fixing a seepage-proof transition section on an irregular rock slope in a mine landfill. A seepage-proof cementitious composite sprayed material is wet-sprayed onto the irregular rock slope (1-2), forming a seepage-proof cementitious composite sprayed material layer (2) on the surface of the seepage-proof transition section. A seepage-proof geomembrane (3) is laid from the regular rock slope (1-1), and then rubber pads (7) and thin steel plates (6) are laid on the geomembrane (3) from the inside out. Hollow grouting anchors (4) are self-drilled through the holes in the thin steel plates (6) and rubber pads (7), and the edges are trimmed with a seepage-proof sealing agent (8). This invention is applied to the reinforcement of seepage-proof transition sections on irregular rock slopes in mine landfills, overcoming the problem of easy damage during the fixing process of seepage-proof transition sections on irregular rock slopes, eliminating potential hazards, and improving the safety and reliability of the seepage-proof system. It not only has good economic benefits but also significant safety and environmental benefits.

This invention provides a highly economical nesting drainage pipe by forming connecting sections between pipe bodies without creating enlarged diameter sections. [Solution] This is a nesting drain pipe 1 in which, among a plurality of pipes of different diameters, one pipe 20 can be inserted into the outer pipe 10 which has a larger diameter. When the inner pipe 20 extends, the tip of the outer pipe 10 at the connecting portion that contacts and connects with the outer pipe 10 is reduced in diameter, and a protrusion 22a provided on the outer circumference of the base end 22 of the inner pipe 20 engages with the reduced diameter portion 13a, thereby forming the connecting portion without expanding the base end 22. Each of the plurality of pipes 10 and 20 is provided with a water collection hole 25 along its entire length. The protrusion 22a is formed from a protruding material such as a thin steel plate, screw, rivet, pin, dowel, or weld bead, or from a wound material such as wire, tape, or pipe, or by crushing the edge of the base end of the pipe.

This invention discloses a method for controlling the edge waviness problem at the head of wide, thin steel plates, relating to the field of steel plate processing quality control technology. The specific steps include obtaining a preset value Fb for the bending roll force. 预 Determine Fb 预 Rolling length L acting on the head of the steel plate 头 Before the steel plate is bitten in during the finishing rolling stage, follow Fb 预 A bending force is applied to create a negative convexity in the transverse loaded roll gap of the rolls; rolling begins when the head of the steel plate bites in, continuing until the rolling length reaches L. 头 Then, restore the bending roll force to its initial value and continue subsequent steel plate rolling. Using the method of this invention, the problem of edge waviness at the head of wide, thin steel plates can be effectively controlled, enabling the straightness of the steel plate head to reach 1.2mm / 1000mm.

This application discloses a dual-drum vulcanizing device. The vulcanizing apparatus includes a vulcanizing support frame fixed to the upper surface of a base, a pair of horizontally distributed vulcanizing drums rotatably connected to the vulcanizing support frame, a pair of horizontally distributed guide rollers rotatably connected to the vulcanizing support frame, a central pressure roller mechanism, a pair of drive roller mechanisms, a pair of tension roller mechanisms, and a thin steel plate pressure belt. The pair of guide rollers are located above the pair of vulcanizing drums and between the pair of guide rollers. The pair of tension rollers are located below the pair of vulcanizing drums and between the pair of tension rollers. The pair of drive rollers are located between the lower parts of the pair of vulcanizing drums. The central pressure roller is located between the upper parts of the pair of vulcanizing drums. The thin steel plate pressure belt is wound around the pair of tension rollers, the pair of guide rollers, the pair of vulcanizing drums, the central pressure roller, and the pair of drive rollers. In this application, both the inlet and outlet are located below the pair of vulcanizing drums, allowing for a larger wrap angle between the two vulcanizing drums and improving vulcanizing efficiency.

A shaped sheet metal part formed from a sheet steel blank includes a steel substrate which consists of a steel which includes 0.1-3% by weight of Mn and optionally up to 0.01% by weight of B. The shaped sheet metal part has an aluminum-based anticorrosion coating on at least one side and is characterized in that the magnitude of the hardness gradient of anticorrosion coating and steel substrate perpendicular to the surface of the steel substrate is less than 1.7 GPa / μm. A process for producing such a shaped sheet metal part.

The present invention relates to a vehicle body bracket vision inspection system comprising: a steel coil supply unit (10) configured so that a steel coil in the form of a thin sheet wound around a rotary shaft is uncoiled under the control of a driving unit (a steel sheet wound in a coil is uncoiled); a steel sheet press unit (20) configured so that the steel coil inserted between an upper die and a lower die is cut into a quadrilateral steel sheet as the upper die presses down on the steel coil; a steel sheet transfer robot (30) configured to suction the quadrilateral steel sheet, loaded on a quadrilateral steel sheet-loading rack, by using a vacuum suction arm, and then transfer same to a vehicle body bracket press unit; a vehicle body bracket press unit (40) configured so that a vehicle body bracket is shaped as the quadrilateral steel sheet inserted between an upper die and a lower die is pressed downward by the upper die; a vehicle body bracket transfer robot (50) configured to suction and transfer the shaped vehicle body bracket to a vision inspection station after the upper die rises; a vision inspection unit (60) that includes a vision inspection station, a vision camera, a 3D scanner, and a main control unit (MCU), inspects whether shaped vehicle body bracket products are defective, and controls the transfer of products to a loading rack for finished products classified as qualified or unqualified products depending on whether the products pass or fail; and a loading robot (70) that suctions the inspected shaped vehicle body bracket products, receives the inspection results from the vision inspection unit, and transfers the products to the loading rack for finished products classified as qualified or unqualified products.

The present invention provides: a thin steel sheet which has excellent formability; a member; and production methods thereof.　Provided is a thin steel sheet which has a component composition containing specific amounts of C, Si, Mn, P, S, Al, N, Cu, Ni and Sn, and satisfying formula (1) and formula (2), with the balance being made up with Fe and inevitable impurities, and which has a steel structure containing, by area ratio, 60-98% of ferrite and 2-35% of pearlite, and having an average crystal grain diameter of ferrite of 5 µm to 35 µm inclusive and an average crystal grain diameter of pearlite of 15 µm or less, wherein the precipitation density of MnS having an equivalent circle diameter of 5 µm or more is 100 per mm2 or less. Formula (1): 0.10 × (%Cu) + 1.5 × (%Sn) ≤ (%Ni) ≤ 5.0 × (%Cu) + 75 × (%Sn) Formula (2): (%Mn) × (%S) / (0.5 × (%Cu) + (%Sn)0.5) ≤ 1.00

The application discloses a low-resistance energy-saving grate plate and a moving end of a grate cooler, and relates to the technical field of cooling machines. The low-resistance energy-saving grate plate comprises a grate plate frame and grate bars arranged in the grate plate frame. The grate bars are composed of a blocking section, a sinking section and a bottom plate which are integrally formed. A grate gap is formed between the blocking section of one of the adjacent grate bars and the sinking section of the other grate bar. The inside of the grate plate frame is further provided with side guards parallel to the grate bars. The side guards are arranged at the bottom end of the grate plate frame and are perpendicular to the grate bars. The material thickness of the grate bars is 2-10 mm. The side gaps between the grate plate frame and the grate bars are closed by the side guards. The smooth transition design of the blocking section, the sinking section and the bottom plate optimizes the flow field distribution of the cooling air flowing through the grate plate, effectively eliminates the vortex area and the high-pressure area of the stagnation point, and simultaneously, the grate bars are punched and formed by 2-10 mm thin steel plates, which are matched with the light-weighted welded frame, so that the overall weight of the grate plate is reduced, the load of the transmission system is greatly reduced, and the transmission energy consumption is further reduced.

The application discloses a kind of multistage gradient drying and anti-oxidation treatment method and system of continuous electroplated tin sheet production line, belong to metallurgical heat treatment technical field.The method is sequentially arranged along the strip steel running direction three processing stages of edge automatic tracking air knife, integral pressurized air knife and steam air knife.First, the moisture of strip steel edge is accurately removed through automatic tracking technology;Second, the free water on the whole plate is removed through integral air knife;Finally, through the injection of superheated steam mixed gas, the residual moisture is completely evaporated at high temperature and an inert protective layer is formed on the surface of the strip steel, preventing tin layer oxidation.The application solves the "black edge" defect caused by incomplete drying of the edge in the traditional drying process and the high temperature oxidation problem, with the advantages of high drying efficiency, stable product quality and high automation degree.

The invention relates to the technical field of road surface foreign matter collection, in particular to a vehicle-mounted expressway road surface foreign matter collector which is installed in front of a truck and comprises a collecting hopper, a first oil cylinder, a control assembly, a scraper knife and the like. The cross section of the collecting hopper is trapezoidal, a framework of the collecting hopper is formed by welding section steel pipes, and the surface covering part is composed of thin steel plates and engineering plastics. The first oil cylinder controls the collecting hopper to get close to or away from the pavement. The control assembly is specially used for controlling lifting and lowering of the scraper knife. The scraper knife is of a double-hinge multi-step-layer combined structure and mainly comprises two hinges, an upper scraper knife body and a multi-step-layer lower scraper knife body. The scraper knife is installed at the front end of the collecting hopper through a first hinge. Therefore, the scraper knife is controlled by the control assembly while moving along with the collecting hopper. When fluctuating or small obstacles exist on the road surface, the lower scraper knife rotates around the second hinge shaft and is always kept to be attached to the road surface, the lower scraper knife can achieve self-adaptive obstacle crossing, and manual obstacle crossing can also be achieved through the control assembly. The device has the advantages of light structure and low use cost.

This invention discloses a production process for thin steel plate keel-type rapid assembly building modules, belonging to the field of prefabricated building technology. The process steps include: fabricating keel and decorative panel components from thin steel plates; adopting an inside-out structure for the modules; fixing them by welding or nailing; the keel forming a crisscross pattern with the skin to create a skeleton structure; processing by a millimeter-precision production line; achieving flexible production through database table exchange; and rapid insertion and positioning between modules using bolts, suitable for rapid on-site hoisting. This invention is lightweight, high-precision, quick to install, and digitally digitizes production, and can be widely applied to the industrialized production and rapid assembly of building modules such as walls, floors, and roofs.

Provided are a thin steel sheet having excellent formability, a member, and production methods for the same.　The steel sheet has: a component composition containing specific amounts of C, Si, Mn, P, S, Al, N, Ti, Nb, Cu, Ni, and Sn and satisfying formula (1) and formula (2), with the balance consisting of Fe and unavoidable impurities; and a structure in which the area ratio of ferrite is 90% or more. The average crystal grain diameter of the ferrite is 10 μm or more. The amount of solid solution C, which is the difference between the total C content and the amount of C present as a carbide, is 0.0030 mass% or less. The precipitation density of carbide having an equivalent circle diameter of 5 μm or more is 350 particles / mm2. Formula (1): 0.1 × [%Cu] + 1.5 × [%Sn] ≤ [%Ni] ≤ 5.0 × [%Cu] + 75 × [%Sn] Formula (2): [%Ti] − ([%C] − [%Nb] × 12 / 93) × 48 / 12 − [%N] × 48 / 14 − ([%S] − [%Cu] × 32 / 64 − [%Mn] × 32 / 55) × 48 / 32 ≥ −0.100

The application discloses a reinforcing method of a ship ventilation pipe reserved opening, a ventilation grille installation method and a ventilation pipe, and relates to the technical field of ship ventilation. The reinforcing method comprises the following steps: in the field production stage of the ship ventilation pipe, bending an inner edge of the reserved opening to form an integral inner edge with the pipe wall, so as to improve the rigidity of the reserved opening, prevent deformation during transportation and segmented pre-installation, and enable the ventilation grille installation to be free of high-altitude correction operation. The application can avoid deformation of the reserved opening from the source, save the high-altitude correction process, eliminate safety hazards and reduce construction costs. The application can effectively improve the technical problems in the prior art, such as the difficulty in ventilation grille installation caused by the deformation of the reserved opening of the ship ventilation pipe and the need for high-altitude correction operation, and is suitable for the industrialized production of rectangular thin steel plate ventilation pipes of various ships.

The utility model provides a kind of cylindrical battery penetration weld steel cover and cylindrical battery, it is related to lithium ion / sodium ion cylindrical battery technical field.The cylindrical battery penetration weld steel cover includes: circular sheet steel cover body;The edge of steel cover body is near the whole to the lower surface of steel cover body below direction Annular recess, form annular recess;The outside of annular recess and the remaining part of steel cover body edge form L type limiting step.In the edge of steel cover body is near stamping L type limiting step and annular recess feature, it can be realized that steel cover and steel shell accurate positioning and do not affect steel cover thickness, ensure that laser welding sealing stability;Steel cover body can directly implement penetration welding, save current collector, both reduce structural cost, and reduce battery module weight.

This invention discloses a wiper connection assembly, comprising a plastic mounting base and a connecting base made of thin steel plate. The mounting base is a single integral component with a longitudinally penetrating mounting channel. Two limiting protrusions are respectively provided on the upper part of both sides of the mounting base in the longitudinal direction at intervals. The connecting base is composed of a connecting part and a base from top to bottom. The base includes a base plate and a pair of downwardly folded side guides formed from the front and rear parts of both sides of the base plate. Each side guide extends a tab that is offset in height from the limiting protrusions. When the tab is in the outward folded state, it will not interfere with the limiting protrusions in the height direction. When the tab is pressed by an external device and is flush with the side guides, the tab at least partially abuts against the limiting protrusions and interferes with the limiting protrusions in the height direction. The wall thickness of the connecting base is in the range of [1.0mm-1.4mm].

The present application relates to the technical field of ball valve ball, especially to a ball valve ball convenient to control flow rate, which can more accurately regulate water flow and more conveniently control the degree of regulation, and is more convenient to use.The ball valve ball convenient to control flow rate comprises a ball, a ball rod, a hand wheel and a flow rate adjusting mechanism, etc.;the ball is provided with a flow-through opening, the ball rod is sleeved on the top of the ball, the hand wheel is fixedly connected to the top end of the ball rod, and the flow rate adjusting mechanism is arranged on the ball.The present application regulates the flow rate of water flow by controlling the deformation degree of two adjusting thin steel plates, and can more accurately control water flow compared with the traditional ball valve, and the bidirectional screw rod locks the screw nut, thereby locking the two adjusting thin steel plates, so that the two adjusting thin steel plates can more stably control the flow rate of water flow.

The application discloses a kind of four-roller rolling mill rolling wide thin gauge steel plate roll control method, it is related to steel rolling technical field, including: the roll bending balance force of rolling mill is set to 1900KN, and the support roll balance force is set to 248Pa;Whether the thickness of steel plate finished product is less than 10mm is judged, if yes, then optimize gap impact compensation, and carry out reverse compensation, and the compensation value is set to +0.8~+0.9;In the process of rolling mill swing gap, if roll gap is less than 5.5mm and rolling force is greater than 400KN, then set roll priority, and automatically adjust roll gap by hydraulic roll gap control system;During rolling, when roll gap setting is less than 5.5mm, the roll gap is set to 5.5mm~6mm to carry out steel rolling, and thickness control is carried out by hydraulic roll gap control system after roll is in place, to ensure that wide thin steel plate rolling is completed.The application guarantees the normal use of roll, so that the steel plate produced meets customer requirements.

This invention discloses a deformable metal curtain wall based on an adaptive mechanical structure, relating to the field of building curtain wall technology. Flexible rubber frames are installed on both sides of the metal curtain wall panel, and supporting thin steel plates are installed at equal intervals inside the flexible rubber frames. Connecting rubber strips are symmetrically connected to one end of each flexible rubber frame, and limiting rubber blocks are connected to one end of each connecting rubber strip. Assembly notches are symmetrically opened on both sides of the metal curtain wall panel, and clamping vertical plates are installed on the two inner walls of the back of the metal curtain wall panel. This invention utilizes the cooperation between the flexible rubber frames and the stacked supporting thin steel plates to provide a certain degree of offset deformation capability when the building sways and misaligns due to environmental factors such as earthquakes and strong winds. This prevents adjacent curtain wall panels from separating and falling off in the event of misalignment, giving the overall curtain wall a certain degree of environmental adaptability and making installation and use more stable.

The utility model relates to ultra -flat floor construction field discloses a combined steel formwork for ultra -flat floor construction, including channel steel, the angle steel of being located channel steel top, the thin steel sheet of being located angle steel, the multiple guide positioning components of being located channel steel top and the lifting adjusting assembly of being located in channel steel, among them: guide positioning component includes the multiple stand column of being located channel steel top, the positioning plate of sliding being located stand column for limiting angle steel ascending height and the locking bolt for locking positioning plate, the guide sleeve is equipped with in each stand column on angle steel, and the top plate of multiple through -channel steel is extended to the inside top rod of channel steel in the bottom of angle steel, lifting adjusting assembly adopts wedge lifting adjusting assembly, and the bottom rotatory mounting of top rod has the gyro wheel, the utility model can utilize guide positioning component to limit the displacement direction of angle steel and control angle steel's ascending height, utilize lifting adjusting assembly to realize to angle steel fast jacking, has simple structure, the advantage that the production cost is low, the adjustment operation is simple and efficient.

This utility model relates to the technical field of tunnel construction equipment, specifically a sealing device for the grouting port of a tunnel lining trolley arch. It includes a sealing window, a vertical rotating shaft, a bearing, a horizontal rotating shaft, and a hydraulic jack. The sealing window is made of high-strength ultra-thin steel plate and is located inside the trolley template. The bearing is mounted on the trolley template, and the upper end of the vertical rotating shaft passes through a through-hole in the bearing and connects to the sealing window. The vertical rotating shaft is rotatably connected relative to the trolley template via the bearing. The lower end of the vertical rotating shaft is connected to one end of the horizontal rotating shaft, and the other end of the horizontal rotating shaft is rotatably connected to the telescopic end of the hydraulic jack via a hinge. The hydraulic jack is fixed to the trolley crossbeam base. This device completely eliminates the risk of arch voids, avoids the concrete protrusions and grinding processes caused by traditional sealing methods, and also avoids the problem of cement slurry jamming the mechanism.

Provided are a thin steel sheet having high strength and excellent formability, a member, and methods for manufacturing the thin steel sheet and the member.　The thin steel sheet has a component composition containing specific amounts of C, Si, Mn, P, S, Al, N, Cu, Sn, and Ni for which specific relationships (1) and (2) hold, the balance being Fe and unavoidable impurities. The thin steel sheet has a streel structure having, by area, a total of 15-75% of ferrite and bainite, 15-80% of martensite, and a total of 0-5% of pearlite and cementite. Moreover, when the area occupied by ferrite exceeds 0% the Vickers hardness of martensite will not exceed 450% of the Vickers hardness of ferrite, the density of MnS precipitate having an equivalent circle diameter of at least 5 μm does not exceed 150 particles / mm2, and the TS is 980 MPa or higher.

The present invention provides a thin steel sheet having excellent shapability, a member, and methods for producing the same.　Provided is a thin steel sheet having a component composition that contains specific amounts of C, Si, Mn, P, S, Al, N, Cu, Ni, and Sn, and that satisfies expression (1) and expression (2), with the remainder being Fe and unavoidable impurities, and a steel structure that, in terms of area ratio, has not less than 70% ferrite and 0-4% pearlite, and that has an average ferrite crystal grain size of 5-35 μm, wherein the precipitation density of MnS with an equivalent circle diameter of not less than 5 μm is not more than 100 / mm2. Expression (1): 0.10×[%Cu]+1.5×[%Sn]≤[%Ni]≤5.0×[%Cu]+75×[%Sn]. Expression (2): [%Mn]×[%S] / (0.5×[%Cu]+[%Sn]0.5)≤0.18.

This utility model relates to the field of packaging box welding technology and discloses a large packaging box welding auxiliary support device, including a frame, a support module rotatably connected between the inner walls of both sides of the frame, a frame placed on the top of the support module, a guide frame fixed to the top of the frame by bolts, a three-axis linear module on the top of the guide frame, a top block fixed to the moving end of the three-axis linear module by bolts, and positioning components that limit the position of the frame on both sides of the frame. The support module includes multiple support rollers that rotate between the inner walls of both sides of the frame. This utility model, through the coordinated use of the three-axis linear module, the top block, the support module and the positioning components, can fix the position of the thin steel plate, making it less prone to positional changes, thereby facilitating the welding of the thin steel plate to the frame and improving the convenience of packaging box welding.

The application relates to a non-supporting and disassembly-free post-poured strip template, and relates to the technical field of building engineering construction, which comprises a wave web, the wave web is a web with a wave shape on the surface and formed by cold bending processing of a thin steel plate, and the two ends of the wave web are fixed in cast-in-place floor slabs on the two sides of a post-poured strip; an upper steel beam and a lower steel beam, the upper steel beam and the lower steel beam are arranged above and below the post-poured strip respectively. The application uses the floor slab itself as a template structure stress support point by arranging the wave web in the cast-in-place floor slabs, realizes non-supporting of the lower part of the template structure through the design of the two side support points, is stable and efficient in the construction process, has a large construction site space, does not affect subsequent construction procedures, the wave web bottom die is disassembly-free and can realize clean environmental protection, and the comprehensive cost is low, so the application value is high.

The invention relates to a method for producing steel components having increased resistance to the penetration of ballistic bodies, wherein a sheet steel blank is punched or cut out of a sheet steel strip, the sheet steel blank subsequently undergoes cyclic heat treatment and, after the cyclic heat treatment, the blank is heated to a temperature greater than Ac3 of the steel alloy and is then press-hardened, wherein during the cyclic heat treatment the blank is heated to above Ac3 of the steel alloy and once the target temperature has been reached over the entire cross section of the blank is cooled to a temperature between Ar1 and Bs of the steel alloy, and this is repeated again at least once. The invention also relates to a bombardment-resistant component and the use of same.

This product primarily relates to the joining of CLT (Cross-Laminated Timber) structural elements in highly earthquake-resistant wooden buildings. CLT refers to a wood-based material called "cross-laminated timber," which is made by laminating and bonding multiple layers of plank-shaped wood vertically and horizontally. It is characterized by its wide, thick, and large, single-piece form, enabling large-span roofs, floors, and walls. Due to these characteristics, CLT is used as a highly earthquake-resistant structural material in modern commercial buildings, offering lighter weight and superior insulation compared to steel frames. It is also used in large-scale wooden buildings. It is becoming popular as "architecture," and the current construction methods include 1) a structure composed only of structural panels for the roof, walls, and floor, and 2) a structure that is constructed in combination with a wooden frame. In the case where only structural panels are used, the connection between the roof and walls, and between the walls and floor, or in the case where a wooden frame is used, the connection between the beams and floors, beams and walls, and walls and columns, is generally done by driving long nails or long screws with flat plates or L-shaped steel plates attached. As mentioned above, the construction of this product in CLT buildings has mainly involved on-site work based on a lot of manual work, and each Considering that the joining of panels involved the use of numerous flat steel plates for joining, and a considerable amount of work with long nails and screws, and that each panel itself was wide, thick, and heavy, and that the exterior wall substrate involved the treatment of a considerable number of flat steel plates, protruding nail heads, or screw heads, making it an extremely complicated and difficult task when working at heights, this product was created. Regarding the joining of each panel, much of the work was pre-fabricated in the factory, and this product is a pin-driven flange-type lag screw bolt designed to enable safe and efficient bolt and steel pin joining during on-site work at heights, while also aiming for high rigidity. Its features include a circular flange on one end for use as a round washer, with a female thread inside the center of the flange having a fixed inner diameter, length, and depth, and on the outside, a lag screw shape with high, large threads and a wide thread pitch that bites into wood material, with a fixed length; and subsequently, a round bar-shaped shaft with the root diameter of the threads forming the outer diameter, with a fixed length, and at least one through-hole for driving in a steel pin, thus integrating two features into a single shape.In the joining of roof or floor panels to wall panels in CLT construction, pre-drilled holes slightly larger than the diameter of the round bar shaft (which is the root diameter of the pin-driven flanged lag screw bolt) are made in the factory for the roof, floor, and wall panels. These pre-drilled holes are then used as through holes, and the pin-driven flanged lag screw bolts are rotated and inserted in advance. During construction, the round bar shaft is inserted into the pre-drilled holes at a certain depth in the upper part of the wall panels erected on both sides. After that, steel drift pins are driven into the pre-drilled pin-insertion locations in the wall panels, thereby easily joining the roof or floor panels to the wall panels. The main body shape of the pin-driven flange-type lag screw bolt is such that a circular flange portion with a fixed outer diameter and thickness, which serves as a round washer larger than the outer diameter of the external thread, is integrally formed on one end of a bolt of a fixed length, and the neck portion of the threaded part is attached to the other end of the bolt, and the neck portion and the outer diameter of the bolt's external threaded part are the same diameter, and the threads are tall and large, and the thread pitch is wide, and the threaded part has the shape of a lag screw, which bites into wood material when rotational force is applied and advances while cutting threads of the same shape, and the threaded part has a fixed outer diameter and root diameter and extends for a fixed length, and then a round rod-shaped shaft which is integrally formed with the root diameter of the threaded part as the outer diameter and extends for a fixed length to the end, and a through hole of a fixed diameter for pin insertion is machined at a fixed position from the end of the shaft, and from the tip of the flange portion, an inward portion is formed with respect to the center of the flange portion. This pin-driven flanged lag screw bolt is characterized by having a male thread of a fixed outer diameter and a female thread that can be fitted into it, both of which are machined to a fixed length and depth. When joining panels using this pin-driven flanged lag screw bolt, a pilot hole is drilled in the panel of the attached wood material with a diameter slightly larger than the diameter of the root of the lag screw-shaped bolt and the shaft of the same diameter. After countersinking to match the shape and thickness of the circular flange portion, the flange portion of the pin-driven flanged lag screw bolt is rotated using a jig. The flange portion has a square groove with a fixed depth and a width slightly larger than the outer diameter of the inserted bolt, and a small diameter through hole around the periphery. By rotating and inserting the bolt into the pilot hole using a dedicated jig and power tool, and then screwing it in and fixing it in place, it becomes one with the wood material, eliminating looseness caused by shrinkage due to the aging of the wood.This product ensures long-term structural integrity by maintaining the load-bearing capacity of the joints of each structural panel and eliminating looseness in the joints caused by seismic vibrations, thereby enabling the long-term structural integrity of the building. Its features include the ability to customize the overall length to match the thickness of each structural panel, the outer diameter, root diameter, thread pitch, and thread length of the threaded section according to the required load-bearing capacity, the diameter of the internal female thread, the length of the round bar shaft, and the number of mounting pin holes. Furthermore, using high-strength hexagonal bolts for the male threads that engage with the internal female threads during construction significantly increases the joint strength, resulting in numerous advantages. It can also be used in conjunction with conventional CLT construction methods using sheet steel or L-shaped steel plates with nails or screws, depending on the application.

The utility model relates to the technical field of weld rolling, and the utility model provides a kind of weld rolling equipment, including mounting bracket and support seat, support seat is set on mounting bracket for supporting workpiece;Rolling assembly is slidably arranged on mounting bracket, and rolling assembly can be moved along the length direction of mounting bracket, and rolling assembly can be abutted with workpiece and horizontally moves and rolls workpiece weld, and rolling assembly has rolling wheel and auxiliary wheel, and rolling wheel and auxiliary wheel are coaxially arranged, and rolling wheel can be abutted with workpiece and horizontally moves and rolls workpiece weld, and auxiliary wheel can be followed rolling wheel and abutted workpiece, and auxiliary wheel is used to adjust the rotation axis of rolling wheel, so that the rotation axis is parallel with the plane where workpiece is located.By the above technical scheme, the mode of traditional manual hammering treatment sheet steel belt weld is changed, the workpiece surface weld is rolled to make stress more uniform, and the flatness and smoothness of weld surface are improved.

This invention relates to the field of plasma cutting machine technology, specifically disclosing a cutting device for electromechanical installation accessories, including a power supply unit and a cutting head; it also includes a holding frame, an adjustment component located between the holding frame and the cutting head, a fixing frame fixed to the output end of the cutting head, and an interlayer spacing detection component. This cutting device for electromechanical installation accessories improves grip stability and reduces the risk of slipping during operation through the anti-slip holding frame. Furthermore, when the cutting head cuts multiple layers of thin steel plates, the interlayer spacing detection component sprays auxiliary gas into the cut gap, which, while cleaning up the residue after cutting, uses the back pressure of the airflow during the jet to detect the interlayer spacing of the multiple layers of thin steel plates. If the interlayer spacing is large, the back pressure when the airflow is ejected is small. At this time, the cutting head is prone to producing slag during cutting. The interlayer spacing detection component automatically increases the airflow intensity to enhance the cleaning effect of the slag.

This invention relates to the field of elevator component welding technology, specifically to a device for preventing deformation during welding of thin steel plates for elevator door panels. The device includes a lower fixture and an upper fixture, with the lower fixture rotatably connected to the top left side of the upper fixture. Support plates are movably connected to the top of the lower fixture and the bottom of the upper fixture. This invention provides a device for preventing deformation during welding of thin steel plates for elevator door panels, achieving both clamping to prevent crushing and gradient heat dissipation to prevent deformation. It balances stability and welding heat control. The component is connected to the load-bearing strip via a main frame and connecting sleeve. The plate strip serves as the core contact component, adhering to the thin plate. Anti-slip plates increase friction to improve clamping stability. Conductive plates transfer welding heat and provide gaps to prevent stress deformation caused by excessively cold contact between the plate strip and the plate. The integrally formed heat-conducting fins of the plate strip quickly dissipate heat, achieving the advantage of uniform heat dissipation throughout the entire area.