Steel member preheating welding device and welding method

Abstract

The invention relates to the technical field of preheating welding devices, and provides a steel member preheating welding device and a welding method.The steel member preheating welding device comprises a mounting mechanism, a welding mechanism and a guiding and positioning mechanism, an intermittent transmission chain scraper conveyor conducts intermittent conveying on a clamping mechanism, and when the clamping mechanism is in a shutdown state, the welding mechanism conducts welding on the clamping mechanism; and a guide rail of the guiding and positioning mechanism comprises an inclined rail and a transverse rail, and when an inserting rod moves downwards along the inclined rail, the welding mechanism is driven to accurately descend to a welding seam position. Zero-error matching of the welding station and the conveying takt is achieved through mechanical linkage, manual adjustment time is eliminated, the procedure interval is shortened, and the production line continuity is remarkably improved. The pure mechanical tripping design is realized, the sensor or motor driving is not needed, and the reset response is fast. The full-process cooperation of preheating, conveying, positioning, welding and resetting is achieved through a pure mechanical structure, and the continuity and continuity of welding work are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of preheating welding devices, in particular to a steel member preheating welding device and a welding method. BACKGROUND

[0002] Steel members refer to steel structure combination members that can bear and transmit loads and are welded or connected by connecting pieces. Through retrieval, an existing patent (Patent No. CN222679887U, entitled Steel member welding device) discloses a steel member welding device, relating to the technical field of steel member processing, which comprises a mounting structure including a bottom plate and a support frame. The support frame is installed at the top end of the bottom plate. A conveying structure is arranged at the top end of the support frame. A welding structure is arranged at one side of the top end of the support frame. A preheating box is installed at the side of the top end of the support frame. A heating structure is arranged at the top end of the preheating box. A cleaning structure is arranged inside the preheating box. A transmission structure is arranged at the top end of the heating structure. A turnover structure is arranged inside the preheating box. The patent generates heat through the heating structure to heat the preheating box. The steel member is preheated by the heat inside the preheating box. Through preheating, the temperature gradient can be reduced, and the formation of cold cracks can be reduced. Preheating helps to slow down the cooling speed of the member during welding, thereby reducing the generation of residual stress.

[0003] However, the above-mentioned scheme or existing technology still has certain deficiencies. The existing steel member welding device has significant defects in preheating synergy, special-shaped part adaptability, and mechanical reliability. The position of the welding device can only be adjusted up and down, and the device as a whole cannot realize full-process synergy of preheating, conveying, positioning, surrounding welding, and resetting, and the degree of automation is low. SUMMARY

[0004] The present application provides a steel member preheating welding device and a welding method, which solves the problem of poor preheating synergy of the existing steel member welding device in related technology, which cannot realize full-process synergy of preheating, conveying, positioning, surrounding welding, and resetting, and has a low degree of automation.

[0005] The technical scheme of the present application is as follows: a steel member preheating welding device, comprising: a chain plate conveyor, a preheating box is arranged on the upper side of the chain plate conveyor, side doors are arranged on both sides of the preheating box, an electric resistance wire device is installed inside the preheating box, a fan assembly for blowing the electric resistance wire device is arranged on the upper side of the preheating box, and the device further comprises: A clamping mechanism is arranged equidistantly on the chain plate conveyor for placing the member to be welded; A linkage mechanism is arranged between the preheating box and the chain plate conveyor. During the operation of the fan assembly, the chain plate conveyor can be intermittently driven through the linkage mechanism; Two guiding positioning mechanisms symmetrically arranged on one side of the preheating box; A mounting mechanism arranged between the two guiding positioning mechanisms; A welding mechanism arranged on the mounting mechanism, used for welding the component arranged on the clamping mechanism; The chain plate conveyor comprises a linkage rack arranged on one side of the preheating box and a plurality of chain plate strips, and the clamping mechanism can rotate the component arranged on the clamping mechanism in cooperation with the linkage rack during the conveying process of the chain plate conveyor; The mounting mechanism can be positionally adjusted in cooperation with the guiding positioning mechanism during the conveying process of the clamping mechanism on the chain plate conveyor.

[0006] Preferably, the guiding positioning mechanism comprises a horizontal plate fixed to the outer wall of the side door, two guide rails are arranged inside the horizontal plate, and each guide rail comprises a horizontal rail and two inclined rails connected with the horizontal rail; The horizontal plate is fixed with a vertical frame away from the outer wall of the side door, and the vertical frame is fixed with an inclined block; A sliding block is arranged on the inner side of the vertical frame, a limiting block is arranged on the opposite side of the sliding block, a guide shaft is arranged between the sliding block and the limiting block, the guide shaft is slidingly arranged inside the limiting block, the sliding block is fixed to the guide shaft, and a return spring is arranged outside the guide shaft between the limiting block and the sliding block.

[0007] Preferably, the mounting mechanism comprises a mounting seat arranged between the two horizontal plates, four insertion rods are fixed to the mounting seat in a rectangular array at both ends, and the four insertion rods are respectively inserted into the inner sides of the two vertical frames in pairs; The mounting seat is fixed with a right-angle frame, the right-angle frame is fixed with a fixed frame on one side, the fixed frame is fixed to the limiting block, a right-angle plate is arranged on the fixed frame, a vertical plate on the right-angle plate is slidingly arranged through the bottom of the fixed frame, a horizontal plate on the right-angle plate is slidingly connected to the inner side of the fixed frame, two guide rods are slidingly arranged through the top of the fixed frame, the bottom ends of the guide rods are fixed to the top of the right-angle plate, and a supporting spring is arranged outside the guide rods on the inner side of the fixed frame.

[0008] Preferably, the welding mechanism comprises a lifting platform arranged below the right-angle frame, an adjusting screw is rotatably connected to the top center of the lifting platform, the adjusting screw is threadedly arranged through the top of the right-angle frame, vertical shafts are fixed to the top ends of the lifting platform on both sides of the adjusting screw, and the vertical shafts are slidingly arranged through the top of the right-angle frame; The bottom of the lifting platform is provided with a top plate, a welding gun is installed at the bottom of the top plate, a threaded rod is fixedly connected to the bottom end of the top plate on one side of the welding gun, an internal thread sleeve is threadedly connected to the outer side of the threaded rod, and a ball is rotatably connected to the bottom end of the internal thread sleeve. A telescopic rod is connected between the lifting platform and the top plate, a suspension spring is sleeved on the outer side of the telescopic rod, and the two ends of the suspension spring are fixedly connected with the lifting platform and the top plate respectively.

[0009] Preferably, the clamping mechanism comprises an adjusting component, the adjusting component comprises a transmission frame fixedly connected to the outer wall of the chain plate, a bidirectional screw rod is rotatably connected to the inner side of the transmission frame, a support column is threadedly connected to the two sides of the bidirectional screw rod, a second main gear is fixedly connected to the outer wall of the bidirectional screw rod, a first main gear is meshingly connected to one side of the second main gear, a handle is rotatably connected to the outer side of the transmission frame, and the handle is coaxially fixed with the first main gear. A square frame is fixedly connected to the top end of the support column, a rotary table is rotatably sleeved on the inner side of the square frame, two clamping pieces for clamping the to-be-welded component are symmetrically and slidably arranged on the inner side of the rotary table, two fixed panels are symmetrically and fixedly arranged on the inner side of the rotary table, an adjusting screw rod is threadedly penetrated in the fixed panel, the adjusting screw rod is rotatably connected with the clamping piece, a scale line is arranged on the outer wall of the rotary table, and a pointer matched with the scale line is arranged on the outer wall of the clamping piece. A connecting plate is slidably connected with the right-angle plate and fixedly connected to the top end of the square frame. A tooth column matched with the linkage rack is fixedly sleeved on the outer periphery of the rotary table.

[0010] Preferably, an air inlet is formed in the top of the preheating box, overlapping ports are formed in the side walls on the two sides of the preheating box, an inlet and an outlet are respectively and penetratively formed in the two side doors, and turnover plates are rotatably connected to the upper sides of the inlet and the outlet through rotating shafts.

[0011] Preferably, the fan assembly comprises a star-shaped fixing frame fixedly connected to the inner side of the air inlet, small chain wheels are rotatably connected to the top end of the star-shaped fixing frame and the top end of the preheating box, a chain is transmissionally connected between the two small chain wheels, and a motor for driving one of the small chain wheels is fixedly installed at the top end of the preheating box. The fan assembly further comprises a fan rotatably connected to the bottom of the center of the star-shaped fixing frame, and the fan is coaxially fixedly connected with the small chain wheel on the upper side of the star-shaped fixing frame. The bottom of the fan center is fixed with a pinion, the inside side wall of the preheating box is fixed with a suspension rod, the bottom of the suspension rod is rotationally connected with a gear wheel, the gear wheel is engaged with the pinion, two outside tooth rings are rotationally connected inside the two lap joints, the outside tooth rings extend outside the preheating box, the inside tooth rings are fixed on the inner wall of the outside tooth rings and engaged with the gear wheel.

[0012] Preferably, the chain plate conveyor comprises a rack, one shaft is rotationally connected on each side of the rack, two transmission sprockets are symmetrically fixed on the shaft inside the rack, four transmission sprockets are transmissionally connected in two groups, the linkage rack is fixed on the top end of the rack.

[0013] Preferably, the linkage mechanism comprises a linkage gear wheel rotationally connected on the side wall of the preheating box, the linkage gear wheel is engaged with the outside tooth ring, a defective gear wheel is rotationally connected on one side of the rack through a shaft, a second belt pulley is fixed on the outside of the defective gear wheel and coaxial with the defective gear wheel, a first belt pulley is fixed on the outer wall of the linkage gear wheel, a transmission belt is transmissionally connected between the first belt pulley and the second belt pulley, a driving gear wheel is arranged on one side of the defective gear wheel and intermittently transmissionally connected with the defective gear wheel, the driving gear wheel is coaxially fixed with the shaft.

[0014] A steel member preheating welding method, comprising the following steps: Step one, turn on the power, start the resistance wire device and the motor, the motor drives the fan to rotate through the small sprocket and the chain, and the high temperature generated by the resistance wire device is blown to the member on the side; Step two, the rotating fan drives the pinion to rotate synchronously, the pinion drives the gear wheel to rotate, the gear wheel drives the outside tooth ring to rotate in the two lap joints through the inside tooth ring, the outside tooth ring drives the linkage gear wheel to rotate, the linkage gear wheel drives the defective gear wheel to rotate under the action of the first belt pulley, the second belt pulley and the transmission belt, the defective gear wheel can drive the driving gear wheel once every rotation, and in turn can drive the shaft once, so that the chain plate conveyor is intermittently transmissionally connected; Step three, the intermittently transmissionally connected chain plate conveyor can drive the clamping mechanism on one side of the preheating box to enter the inside of the preheating box through the pushing and turning plate, at the same time, the clamping mechanism originally located inside the preheating box can push and move the turning plate to the outside of the preheating box, and the turning plate is automatically closed under the action of its own gravity; Step four, the two components to be welded are spliced and installed through the clamping mechanism, the components are arranged between the two clamping pieces, the positions of the two clamping pieces are adjusted to stably clamp the components to be welded by rotating the adjusting screw rod and checking the scale line and the pointer, then the handle is rotated, and the two support columns can approach each other under the action of the first main gear, the second main gear and the bidirectional screw rod, so that the two components are spliced; Step five, the clamping mechanism removed from the preheating box is just in the interrupt period of the chain plate conveyor, that is, the incomplete gear is not engaged with the driving gear for transmission, at this time, the welding gun on the welding mechanism is just above the splicing position of the two components, and the clamping mechanism is just adjacent to one side of the linkage rack; Step six, when the chain plate conveyor continues to drive, the chain plate strip drives the clamping mechanism to move right, at the same time, the connecting plate on the clamping mechanism pushes the right angle plate, so that the right angle plate pushes the fixed frame to move, so that the limiting block, the right angle frame, the mounting seat and the clamping mechanism can be displaced synchronously, and then the welding mechanism and the components to be welded can be moved right synchronously; Step seven, when the mounting mechanism moves initially, the inserting rod moves along the inclined rail to the horizontal rail, so that the mounting seat, the right angle frame, the fixed frame and the limiting block are lowered, the right angle frame drives the welding mechanism to be lowered, so that the bottom end of the welding gun on the welding mechanism falls to the position to be welded of the component; Step eight, in the process of moving the clamping mechanism, under the meshing transmission of the tooth column and the linkage rack, the tooth column can drive the rotating table to rotate, and then drive the clamped component to rotate, so that the component can be welded by the welding gun; Step nine, when the component is a square steel instead of a cylindrical shape, the inner threaded sleeve is rotated on the threaded rod, the position of the inner threaded sleeve is lifted and lowered, the distance between the welding gun and the component can be adjusted by the contact between the inner threaded sleeve and the outer wall of the component, and with the rotation of the square steel, the inner threaded sleeve can be pushed to lift and lower the top plate through the threaded rod, so that the telescopic rod is adapted to be stretched and contracted under the action of the suspension spring.

[0015] The working principle and beneficial effects of the application are as follows: The application adopts process integration and automatic linkage design: when the fan assembly drives the fan, through the transmission of pinion-gear-wheel-inner tooth ring, the outer tooth ring is rotated; the outer tooth ring is engaged with the linkage gear, and then through the belt pulley / drive incomplete gear, the intermittent movement of the chain plate conveyor is realized, so that single motor drives double system, the power of the fan is synchronously converted into the conveying power, and the independent driving unit is reduced. The incomplete gear is engaged with the driving gear once every revolution, so that the chain plate conveyor is step-by-step conveyed, the clamping mechanism stays in the preheating box for a fixed time as a complete preheating cycle, the preheating-conveying-welding beat is automatically matched, and the overheating or underheating problem caused by manual intervention is eliminated. The specific number of workpieces processed in the preheating box depends on the size of the box body, the welding stations are synchronously operated, the equipment utilization is improved, and the production cycle is shortened; The application adopts an adaptive welding system: rotary positioning: when the clamping mechanism moves, the tooth column is engaged with the linkage rack to drive the rotary table to rotate, so that the workpiece is self-rotated without power, the welding gun is fixed for welding, the conveying process is synchronized to complete the self-rotation of the workpiece, 360° continuous circumferential welding is realized, and thermal stress deformation caused by traditional step-by-step welding is avoided. Dynamic welding distance adjustment: for special-shaped workpieces such as square steel, the height of the inner thread sleeve is adjusted through the thread rod, and the ball end face contacts the workpiece; the workpiece pushes the sleeve when rotating, the suspension spring buffers in real time, the welding gun is kept at a constant distance, and the application is especially suitable for circular pipe girth welding and special-shaped workpiece continuous welding; The application adopts three-dimensional positioning welding: the chain plate conveyor intermittently conveys the clamping mechanism, the welding mechanism is conveniently adjusted in structure during the stop state of the clamping mechanism, the guide rail of the guide positioning mechanism contains an inclined rail and a horizontal rail, and the insertion rod is lowered along the inclined rail to drive the welding mechanism to accurately descend to the weld position. That is, when the clamping mechanism moves out of the preheating box, the chain plate conveyor is in the "interruption period", the incomplete gear is not engaged with the driving gear, so that the welding gun of the welding mechanism is automatically positioned above the workpiece joint. Through mechanical linkage, zero-error matching of the welding station and the conveying beat is realized, manual adjustment time is eliminated, the process interval is shortened, and the production line continuity is significantly improved; The application adopts passive displacement synchronization design: the connecting plate of the clamping mechanism pushes the right-angle plate, drives the mounting mechanism to move right with the workpiece as a whole, and the limit block compresses the reset spring. Physical contact is used to realize dynamic following of the welding mechanism and the workpiece, the cost of the servo control system is avoided, the mechanical structure has strong anti-interference performance, and is suitable for high-dust industrial scenes; The application adopts mechanical guide precise positioning design: the insertion rod slides along the inclined rail to the horizontal rail, drives the mounting seat and the welding gun to vertically move downward, so that the tip of the welding gun accurately reaches the starting point of the weld. The inclined rail design of the guide rail realizes automatic descent of the welding gun and synchronous horizontal displacement, solves the problem of weld offset caused by manual alignment deviation; The application adopts an automatic tripping reset mechanism: the transverse plate of the right-angle plate is extruded to slide up by the inclined block, and is separated from the connecting plate; after the clamping mechanism moves out, the reset spring pushes the mounting mechanism to reset. The pure mechanical tripping design is realized, and a sensor or a motor drive is not needed, and the reset response is faster. The whole process of preheating, conveying, positioning, welding and resetting is realized through the pure mechanical structure, and the continuity and sustainability of the welding work are realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] The application will be further described in detail below in combination with the drawings and specific embodiments.

[0017] Figure 1 A three-dimensional structure schematic diagram of a steel member preheating and welding device is provided for the application. Figure 2 A fan assembly, a linkage mechanism and a chain plate conveyor assembly structure schematic diagram are provided for the application. Figure 3 A mounting mechanism, a welding mechanism and a guide positioning mechanism assembly structure schematic diagram are provided for the application. Figure 4 A mounting mechanism and a guide positioning mechanism structure composition schematic diagram are provided for the application. Figure 5 A Figure 3 An enlarged structure schematic diagram at A in the middle. Figure 6 A clamping mechanism structure composition schematic diagram is provided for the application. In the drawings: 1, preheating box; 11, side door; 12, air inlet; 13, turnover plate; 14, lap joint; 2, fan assembly; 21, motor; 22, small chain wheel; 23, chain; 24, fan; 25, star-shaped fixing frame; 26, outer gear ring; 27, inner gear ring; 28, large gear; 29, small gear; 3, clamping mechanism; 31, connecting plate; 32, square frame; 33, rotary table; 34, tooth column; 35, support column; 36, fixed panel; 37, clamping piece; 38, adjusting screw; 39, adjusting part; 391, handle; 392, first main gear; 393, second main gear; 394, bidirectional screw; 395, transmission frame; 4, linkage mechanism; 41, first belt pulley; 42, linkage gear; 43, transmission belt; 44, second belt pulley; 45, incomplete gear; 46, driving gear; 5, chain plate conveyor; 51, rack; 52, transmission chain; 53, chain plate; 54, transmission sprocket; 55, shaft coupling; 56, linkage rack; 6, mounting mechanism; 61, mounting seat; 62, insertion rod; 63, right-angle frame; 64, fixed frame; 65, guide rod; 66, support spring; 67, right-angle plate; 7, welding mechanism; 71, adjusting screw; 72, vertical shaft; 73, lifting platform; 74, telescopic rod; 75, welding gun; 76, internally threaded sleeve; 77, threaded rod; 78, suspension spring; 79, top plate; 8, guiding and positioning mechanism; 81, horizontal plate; 82, vertical frame; 83, inclined block; 84, sliding block; 85, guide shaft; 86, return spring; 87, limiting block; 88, guide rail; 9, resistance wire device. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor also fall within the scope of protection of the present application.

[0019] Embodiment 1 Please refer to Figure 1 and Figure 2 A steel member preheating and welding device and a welding method, comprising: a chain plate conveyor 5, a preheating box 1 is arranged on the upper side of the chain plate conveyor 5, side doors 11 are arranged on both sides of the preheating box 1, a resistance wire device 9 is installed inside the preheating box 1, a fan assembly 2 for blowing the resistance wire device 9 is arranged on the upper side of the preheating box 1, and further comprising: a linkage mechanism 4 arranged between the preheating box 1 and the chain plate conveyor 5, which can intermittently drive the chain plate conveyor 5 during the operation of the fan assembly 2.

[0020] Specifically, the preheating box 1 is provided with an air inlet 12 at the top, and overlap openings 14 are arranged on the side walls of the preheating box 1. The inlet and outlet are respectively arranged on the two side doors 11, and the upper sides of the inlet and outlet are rotatably connected with turnover plates 13 through shafts.

[0021] Specifically, the fan assembly 2 comprises a star-shaped fixed frame 25 fixedly connected to the inner side of the air inlet 12, and small chain wheels 22 are rotatably connected to the top end of the star-shaped fixed frame 25 and the top end of the preheating box 1. A chain 23 is drivingly connected between the two small chain wheels 22, and a motor 21 is fixedly installed at the top end of the preheating box 1 to drive one of the small chain wheels 22.

[0022] Further, the fan assembly 2 further comprises a fan 24 rotatably connected to the bottom center of the star-shaped fixed frame 25, and the fan 24 is coaxially fixedly connected with the small chain wheel 22 on the upper side of the star-shaped fixed frame 25.

[0023] Further, a small gear 29 is fixed at the center of the fan 24, a suspension rod is fixed to the inner side wall of the preheating box 1, a large gear 28 is rotatably connected to the bottom of the suspension rod, the large gear 28 is engaged with the small gear 29, an outer gear ring 26 is rotatably connected in the two lap joints 14, the outer gear ring 26 extends out of the preheating box 1, an inner gear ring 27 is fixed to the inner wall of the outer gear ring 26, and the inner gear ring 27 is engaged with the large gear 28.

[0024] Specifically, the chain conveyor 5 comprises a rack 51, one shaft 55 is rotatably connected to each side of the rack 51, two transmission sprockets 54 are symmetrically fixed to the shaft 55 on the inner side of the rack 51, each group of the four transmission sprockets 54 is drivingly connected with a transmission chain 52, the chain links 53 are uniformly distributed on the transmission chain 52, and the linkage rack 56 is fixed to the top end of the rack 51.

[0025] Specifically, the linkage mechanism 4 comprises a linkage gear 42 rotatably connected to the side wall of the preheating box 1, the linkage gear 42 is engaged with the outer gear ring 26, the rack 51 is rotatably connected with a defective gear 45 on one side through a shaft, the second belt pulley 44 is fixed on the outer side of the defective gear 45 coaxially with the defective gear 45, the first belt pulley 41 is fixed to the outer wall of the linkage gear 42, the transmission belt 43 is drivingly connected between the first belt pulley 41 and the second belt pulley 44, the driving gear 46 is arranged on one side of the defective gear 45 and drivingly connected with the defective gear 45 intermittently, and the driving gear 46 is fixed coaxially with the shaft 55.

[0026] In this embodiment, the power supply is turned on, the resistance wire device 9 and the motor 21 are started, the motor 21 drives the fan 24 to rotate through the small sprocket 22 and the chain 23, and the high temperature generated by the resistance wire device 9 is used to heat the components on the lower side. The rotating fan 24 drives the small gear 29 to rotate synchronously, the small gear 29 drives the large gear 28 to rotate, the large gear 28 drives the outer gear ring 26 to rotate in the two lap joints 14 through the inner gear ring 27, the outer gear ring 26 drives the linkage gear 42 to rotate, the linkage gear 42 drives the defective gear 45 to rotate under the action of the first belt pulley 41, the second belt pulley 44 and the transmission belt 43, the defective gear 45 can drive the driving gear 46 once every rotation, and in turn can drive the shaft 55 once every rotation, so that the chain conveyor 5 is intermittently driven. The intermittently driven chain conveyor 5 can drive the clamping mechanism 3 on one side of the preheating box 1 to enter the inside of the preheating box 1 by pushing and overturning the plate 13, at the same time, the clamping mechanism 3 originally located in the inside of the preheating box 1 can push and move the overturning plate 13 to the outside of the preheating box 1, and the overturning plate 13 is automatically closed under the action of its own gravity.

[0027] Embodiment 2 Please refer to Figure 1 , Figure 2 and Figure 6A steel member preheating welding device and a welding method, comprising the whole content of embodiment 1, in addition, further comprising a clamping mechanism 3 arranged equidistantly on the chain plate conveyor 5 for placing the to-be-welded member.

[0028] Specifically, the clamping mechanism 3 comprises an adjusting component 39, the adjusting component 39 comprises a transmission frame 395 fixedly connected to the outer wall of the chain plate 53, a bidirectional screw rod 394 is rotationally connected to the inner side of the transmission frame 395, a supporting column 35 is threadedly sleeved on both sides of the bidirectional screw rod 394, a second main gear 393 is fixedly sleeved on the outer wall of the bidirectional screw rod 394, a first main gear 392 is meshingly connected to one side of the second main gear 393, a handle 391 is rotationally connected to the outer side of the transmission frame 395, and the handle 391 is coaxially fixed with the first main gear 392.

[0029] Further, the supporting column 35 has a square frame 32 fixedly connected to the top end, the square frame 32 has a rotary table 33 rotationally sleeved on the inner side, two clamping pieces 37 for clamping the to-be-welded member are symmetrically arranged on the inner side of the rotary table 33, and two fixed panels 36 are symmetrically fixed on the inner side of the rotary table 33, an adjusting screw rod 38 is threadedly penetrated into the fixed panel 36, the adjusting screw rod 38 is rotationally connected with the clamping piece 37, the rotary table 33 is provided with a scale line, and the clamping piece 37 is provided with a pointer matched with the scale line. Further, the square frame 32 has a connecting plate 31 fixedly connected to the top end and slidably matched with the right-angle plate 67. The rotary table 33 has a tooth column 34 fixedly sleeved on the outer periphery and matched with the linkage rack 56.

[0030] In the embodiment, the two members to be welded are spliced and installed by the clamping mechanism 3, the members are placed between the two clamping pieces 37, the positions of the two clamping pieces 37 are adjusted by rotating the adjusting screw rod 38 and matching the scale line and the pointer, so that the two clamping pieces 37 stably clamp the to-be-welded member, then the handle 391 is rotated, and the two supporting columns 35 can be close to each other under the action of the first main gear 392, the second main gear 393 and the bidirectional screw rod 394, so that the two members are spliced.

[0031] Embodiment 3 Please refer to Figures 1-6The steel component preheating welding device and welding method further comprise two guiding and positioning mechanisms 8 symmetrically arranged on one side of the preheating box 1, a mounting mechanism 6 arranged between the two guiding and positioning mechanisms 8, and a welding mechanism 7 arranged on the mounting mechanism 6 and used for welding the component arranged on the clamping mechanism 3. The chain plate conveyor 5 comprises a linkage rack 56 arranged on one side of the preheating box 1 and a plurality of chain plate strips 53. The clamping mechanism 3 can rotate the component arranged on the clamping mechanism 3 in cooperation with the linkage rack 56 during conveying by the chain plate conveyor 5. The mounting mechanism 6 can be adjusted in position in cooperation with the guiding and positioning mechanism 8 during conveying of the clamping mechanism 3 by the chain plate conveyor 5.

[0032] Specifically, the guiding and positioning mechanism 8 comprises a horizontal plate 81 fixed to the outer wall of the side door 11, two guide rails 88 penetrating through the inside of the horizontal plate 81, each guide rail 88 comprising a horizontal rail and two inclined rails in communication with the horizontal rail, a vertical frame 82 fixed to the outer wall of the side of the horizontal plate 81 away from the side door 11, an inclined block 83 fixed to the outer wall of the vertical frame 82, a sliding block 84 slidingly sleeved on the inside of the vertical frame 82, a limiting block 87 arranged on the opposite side of the sliding block 84, a guide shaft 85 arranged between the sliding block 84 and the limiting block 87 and slidingly penetrating through the inside of the limiting block 87, and a return spring 86 sleeved on the outside of the guide shaft 85 between the limiting block 87 and the sliding block 84.

[0033] Specifically, the mounting mechanism 6 comprises a mounting seat 61 arranged between the two horizontal plates 81, four insertion rods 62 fixed to the two ends of the mounting seat 61 in a rectangular array, and two groups of the four insertion rods 62 respectively inserted into the insides of the two vertical frames 82. The mounting seat 61 further comprises a right-angle bracket 63 fixed to the outer wall of the mounting seat 61, a fixed frame 64 fixed to one side of the right-angle bracket 63 and fixed to the limiting block 87, a right-angle plate 67 arranged on the fixed frame 64, a vertical plate on the right-angle plate 67 slidingly penetrating through the bottom of the fixed frame 64, a horizontal plate on the right-angle plate 67 slidingly connected to the inside of the fixed frame 64, two guide rods 65 slidingly penetrating through the top of the fixed frame 64 and fixed to the top of the right-angle plate 67, and a supporting spring 66 sleeved on the outside of the guide rod 65 inside the fixed frame 64.

[0034] Specific, welding mechanism 7 includes set up in the lower side of the right angle frame 63 lifting platform 73, lifting platform 73 top center rotating connection has adjusting screw 71, adjusting screw 71 screw through the top of the right angle frame 63, located on both sides of the adjusting screw 71 lifting platform 73 top end is firmly connected with the vertical shaft 72, vertical shaft 72 sliding through the top of the right angle frame 63, lifting platform 73 bottom side is provided with the top plate 79, the top plate 79 bottom welding gun 75 is installed, located on one side of the welding gun 75 top plate 79 bottom end is firmly connected with the threaded rod 77, threaded rod 77 outside threaded sleeve is provided with the internal thread sleeve 76, the internal thread sleeve 76 bottom rotating sleeve is provided with the ball. Lifting platform 73 and the top plate 79 between the connection has telescopic rod 74, located in the telescopic rod 74 outside the sleeve is provided with the suspension spring 78, the suspension spring 78 both ends are respectively with the lifting platform 73 and the top plate 79 is fixedly connected.

[0035] In this embodiment, from the preheating box 1 preheating is completed and moves out of the clamping mechanism 3 is just in the chain plate conveyor 5 in the interrupt period, namely the missing gear 45 and the drive gear 46 is not engaged transmission, at this time, the welding gun 75 on the welding mechanism 7 is just located above the two components splicing, clamping mechanism 3 is just adjacent to the side of the linkage rack 56. When the chain plate conveyor 5 continues to drive, the chain plate 53 drives the clamping mechanism 3 forward right, at the same time, the clamping mechanism 3 on the connecting plate 31 will push the right angle plate 67, so that the right angle plate 67 pushes the fixed frame 64 to move, so that the limiting block 87, right angle frame 63, mounting seat 61 and clamping mechanism 3 can be synchronous displacement, in turn, so that the welding mechanism 7 and the component to be welded synchronous right.

[0036] In this embodiment, in the initial movement of the installation mechanism 6, the plug rod 62 moves along the inclined rail to the horizontal rail, so that the mounting seat 61, the right angle frame 63, the fixed frame 64 and the limiting block 87 are lowered, the right angle frame 63 drives the welding mechanism 7 to move downward, so that the bottom end of the welding gun 75 on the welding mechanism 7 falls to the position to be welded of the component. In the process of moving the clamping mechanism 3, under the meshing transmission of the tooth column 34 and the linkage rack 56, the tooth column 34 can drive the rotary table 33 to rotate, in turn, drive the clamped component to rotate, so that the component can be welded by the welding gun 75.

[0037] In this embodiment, when the component is a square steel instead of a cylindrical shape, the position of the internal thread sleeve 76 is lifted by rotating the internal thread sleeve 76 on the threaded rod 77, the distance between the welding gun 75 and the component can be adjusted by the contact between the internal thread sleeve 76 and the outer wall of the component. With the rotation of the square steel, the internal thread sleeve 76 can be pushed to lift the top plate 79 through the threaded rod 77, so that the telescopic rod 74 can be stretched and contracted under the action of the suspension spring 78.

[0038] Working principle and use process: Firstly, the two components to be welded are assembled by the clamping mechanism 3, the components are placed between the two clamping pieces 37, the positions of the two clamping pieces 37 are adjusted by rotating the adjusting screw 38 and checking the scale line and the pointer, so that the two clamping pieces 37 can stably clamp the components to be welded, then the handle 391 is rotated, under the action of the first main gear 392, the second main gear 393 and the bidirectional screw 394, the two supporting columns 35 can approach each other, and the two components are assembled.

[0039] Then, the power is turned on, the resistance wire device 9 and the motor 21 are started, the motor 21 drives the fan 24 to rotate through the small chain wheel 22 and the chain 23, and the high temperature generated by the resistance wire device 9 is blown to the components on the lower side. The rotating fan 24 drives the pinion 29 to rotate synchronously, the pinion 29 drives the gear wheel 28 to rotate, the gear wheel 28 drives the outer gear ring 26 to rotate in the two lap joints 14 through the inner gear ring 27, the outer gear ring 26 drives the linkage gear 42 to rotate, the linkage gear 42 drives the incomplete gear 45 to rotate under the action of the first belt pulley 41, the second belt pulley 44 and the transmission belt 43, the incomplete gear 45 can drive the drive gear 46 once every rotation, and then can drive the shaft coupling 55 once, so that the chain plate conveyor 5 is intermittently driven. The chain plate conveyor 5 can push the clamping mechanism 3 on one side of the preheating box 1 into the preheating box 1 through the turnover plate 13, at the same time, the clamping mechanism 3 originally located in the preheating box 1 can push the turnover plate 13 to move to the outside of the preheating box 1, and the turnover plate 13 is automatically closed under the action of its own gravity.

[0040] The clamping mechanism 3 removed from the preheating box 1 is just in the interruption period of the chain plate conveyor 5, that is, the incomplete gear 45 and the drive gear 46 are not engaged and driven, at this time, the welding gun 75 on the welding mechanism 7 is just located above the joint of the two components, and the clamping mechanism 3 is just adjacent to one side of the linkage rack 56. When the chain plate conveyor 5 continues to drive, the chain plate 53 drives the clamping mechanism 3 to move forward and right, at the same time, the connecting plate 31 on the clamping mechanism 3 pushes the right angle plate 67, so that the right angle plate 67 pushes the fixed frame 64 to move, so that the limiting block 87, the right angle frame 63, the mounting seat 61 and the clamping mechanism 3 can be displaced synchronously, and then the welding mechanism 7 and the components to be welded can be displaced right synchronously, and the limiting block 87 compresses the return spring 86; When the mounting mechanism 6 is initially moved, the inserting rod 62 moves along the inclined rail to the cross rail, so that the mounting base 61, the right-angle frame 63, the fixed frame 64 and the limiting block 87 are lowered, the right-angle frame 63 drives the welding mechanism 7 to be lowered, so that the bottom end of the welding gun 75 on the welding mechanism 7 is just lowered to the position to be welded of the component, and the sliding block 84 is lowered in the inside of the vertical frame 82 through the limiting block 87 and the guide shaft 85. In the process of moving the clamping mechanism 3, the tooth column 34 can drive the rotating table 33 to rotate through the meshing transmission of the tooth column 34 and the linkage rack 56, and then drive the clamped component to rotate, so that the component can be circumferentially welded by the welding gun 75. When the component is a square steel, the position of the inner threaded sleeve 76 is lifted and lowered through the rotation of the inner threaded sleeve 76 on the threaded rod 77, the distance between the welding gun 75 and the component is adjusted through the contact between the inner threaded sleeve 76 and the outer wall of the component, and the top plate 79 is lifted and lowered through the threaded rod 77 by the inner threaded sleeve 76, so that the telescopic rod 74 is correspondingly telescoped under the action of the suspension spring 78.

[0041] When the transverse plate on the right-angle plate 67 moves to the inclined block 83, the right-angle plate 67 is extruded by the inclined block 83 and slides along the inclined surface of the inclined block 83, so that the guide rod 65 is lifted and the supporting spring 66 is compressed, when the right-angle plate 67 is completely staggered with the connecting plate 31, the clamping mechanism 3 is conveyed by the right movement of the chain plate conveyor 5 and no longer pushes the mounting mechanism 6, the limiting block 87 is left pushed and reset along the guide shaft 85 under the action of the reset spring 86, so that the mounting mechanism 6 and the welding mechanism 7 are automatically reset, so as to facilitate the next welding work.

[0042] It is worth noting that the circuits, electronic components and modules involved in the present application are all prior art, and those skilled in the art can realize them without further description, and the content protected by the present application does not involve improvement of software and methods.

[0043] The above is only a preferred embodiment of the present application and does not limit the present application, any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A preheating welding device for steel components, comprising: A chain conveyor (5), wherein a preheating box (1) is provided on the upper side of the chain conveyor (5), and side doors (11) are provided on both sides of the preheating box (1). A resistance wire device (9) is installed inside the preheating box (1), and a fan assembly (2) for blowing the resistance wire device (9) is provided on the upper side of the preheating box (1). The preheating box (1) is characterized by further comprising: Clamping mechanisms (3) are equidistantly arranged on the chain conveyor (5) for placing the components to be welded. The linkage mechanism (4) located between the preheating box (1) and the chain conveyor (5) can intermittently drive the chain conveyor (5) during the operation of the fan assembly (2). Two guide positioning mechanisms (8) are symmetrically arranged on one side of the preheating box (1); The mounting mechanism (6) is disposed between the two guide positioning mechanisms (8); The welding mechanism (7) provided on the mounting mechanism (6) is used to weld the components placed on the clamping mechanism (3); The chain conveyor (5) includes a linkage rack (56) and multiple chain plates (53) disposed on one side of the preheating box (1). During the conveying process by the chain conveyor (5), the clamping mechanism (3) can rotate the component to be welded placed on the clamping mechanism (3) in cooperation with the linkage rack (56). During the process of the clamping mechanism (3) being conveyed by the chain conveyor (5), the position of the installation mechanism (6) can be adjusted in cooperation with the guiding and positioning mechanism (8).

2. The steel component preheating welding device according to claim 1, characterized in that, The guiding and positioning mechanism (8) includes a horizontal plate (81) fixed to the outer wall of the side door (11). Two guide rails (88) are provided inside the horizontal plate (81). Each guide rail (88) includes a horizontal rail and two inclined rails connected to the horizontal rail. A vertical frame (82) is fixed to the outer wall of the side of the horizontal plate (81) away from the side door (11), and an inclined block (83) is fixed to the outer wall of the vertical frame (82). A slider (84) is slidably sleeved on the inner side of the frame (82). A limit block (87) is provided on the opposite side of the slider (84). A guide shaft (85) is provided between the slider (84) and the limit block (87). The guide shaft (85) slides through the inside of the limit block (87). The slider (84) is fixedly connected to the guide shaft (85). A return spring (86) is sleeved on the outer side of the guide shaft (85) located between the limit block (87) and the slider (84).

3. The steel component preheating welding device according to claim 2, characterized in that, The installation mechanism (6) includes a mounting base (61) disposed between the two horizontal plates (81). Each end of the mounting base (61) is fixed with four insert rods (62) in a rectangular array. The four insert rods (62) are inserted into the inner side of the two vertical frames (82) in pairs. A right-angle bracket (63) is fixed to the outer wall of the mounting base (61). A fixed frame (64) is fixed to one side of the right-angle bracket (63). The fixed frame (64) is fixed to the limiting block (87). A right-angle plate (67) is provided on the fixed frame (64). The vertical plate on the right-angle plate (67) slides through the bottom of the fixed frame (64). The horizontal plate on the right-angle plate (67) slides through the inner side of the fixed frame (64). Two guide rods (65) are slidably provided at the top of the fixed frame (64). The bottom end of the guide rod (65) is fixed to the top of the right-angle plate (67). A support spring (66) is sleeved on the outer side of the guide rod (65) located inside the fixed frame (64).

4. The steel component preheating welding device according to claim 3, characterized in that, The welding mechanism (7) includes a lifting platform (73) located on the lower side of the right-angle frame (63). An adjusting screw (71) is rotatably connected to the center of the top of the lifting platform (73). The adjusting screw (71) is threaded through the top of the right-angle frame (63). Vertical shafts (72) are fixedly connected to the top of the lifting platforms (73) on both sides of the adjusting screw (71). The vertical shafts (72) slide through the top of the right-angle frame (63). The lifting platform (73) is provided with a top plate (79) on its lower side. A welding gun (75) is installed at the bottom of the top plate (79). A threaded rod (77) is fixedly connected to the bottom end of the top plate (79) on one side of the welding gun (75). An internal threaded sleeve (76) is threaded on the outer side of the threaded rod (77). A ball bearing is rotatably fitted at the bottom end of the internal threaded sleeve (76). A telescopic rod (74) is connected between the lifting platform (73) and the top plate (79). A suspension spring (78) is sleeved on the outside of the telescopic rod (74). The two ends of the suspension spring (78) are fixedly connected to the lifting platform (73) and the top plate (79) respectively.

5. A steel component preheating welding device according to claim 4, characterized in that, The clamping mechanism (3) includes an adjusting component (39), which includes a transmission frame (395) fixed to the outer wall of the chain plate (53). A bidirectional lead screw (394) is rotatably connected to the inner side of the transmission frame (395). A support column (35) is threaded on both sides of the bidirectional lead screw (394). A second main gear (393) is fixedly sleeved on the outer wall of the bidirectional lead screw (394). A first main gear (392) is meshed on one side of the second main gear (393). A handle (391) is rotatably connected to the outer side of the transmission frame (395). The handle (391) is coaxially fixed with the first main gear (392). The top of the support column (35) is fixedly connected to a square frame (32). A turntable (33) is rotatably sleeved on the inner side of the square frame (32). Two clamping parts (37) for clamping the components to be welded are symmetrically slidably arranged on the inner side of the turntable (33). Two fixed panels (36) are symmetrically fixed on the inner side of the turntable (33). An adjusting screw (38) is threaded through the inside of the fixed panel (36). The adjusting screw (38) is rotatably connected to the clamping parts (37). The outer wall of the turntable (33) is provided with scale lines. The outer wall of the clamping parts (37) is provided with pointers that cooperate with the scale lines. The top of the frame (32) is fixedly connected to a connecting plate (31) that slides with the right angle plate (67); The turntable (33) is fixedly fitted with a toothed column (34) that cooperates with the linkage rack (56) on its outer periphery.

6. The steel component preheating welding device according to claim 5, characterized in that, The preheating box (1) has an air inlet (12) on the top and an overlap joint (14) on both sides of the preheating box (1). The two side doors (11) have an inlet and an outlet respectively, and the upper sides of the inlet and outlet are connected to a rotating plate (13) by a rotating shaft.

7. A steel component preheating welding device according to claim 6, characterized in that, The fan assembly (2) includes a star-shaped bracket (25) fixed to the inside of the air inlet (12). Small sprockets (22) are rotatably connected to the top of the star-shaped bracket (25) and the top of the preheating box (1). A chain (23) is connected between the two small sprockets (22). A motor (21) that drives one of the small sprockets (22) is fixedly installed on the top of the preheating box (1). The fan assembly (2) also includes a fan (24) rotatably connected to the bottom of the center of the star-shaped bracket (25), and the fan (24) is coaxially fixed to the small sprocket (22) located on the upper side of the star-shaped bracket (25); A small gear (29) is fixedly connected to the bottom of the center of the fan (24). A suspension rod is fixedly connected to the inner side wall of the preheating box (1). A large gear (28) is rotatably connected to the bottom of the suspension rod. The large gear (28) meshes with the small gear (29). An external gear ring (26) is rotatably connected inside the two mating joints (14). The external gear ring (26) extends out of the outside of the preheating box (1). An internal gear ring (27) is fixedly connected to the inner circumference of the external gear ring (26). The internal gear ring (27) meshes with the large gear (28).

8. A preheating welding device for steel components according to claim 7, characterized in that, The chain conveyor (5) includes a frame (51), with a coupling (55) rotatably connected to both sides of the frame (51). Two drive sprockets (54) are symmetrically fixed on the couplings (55) located inside the frame (51). The four drive sprockets (54) are connected to a drive chain (52) in pairs. Chain plates (53) are evenly distributed on the drive chain (52). The linkage rack (56) is fixed to the top of the frame (51).

9. A preheating welding device for steel components according to claim 8, characterized in that, The linkage mechanism (4) includes a linkage gear (42) rotatably connected to the side wall of the preheating box (1). The linkage gear (42) meshes with the external gear ring (26). A broken gear (45) is rotatably connected to one side of the frame (51) via a shaft. A second pulley (44) is provided on the outside of the broken gear (45) and is coaxially fixed with the broken gear (45). A first pulley (41) is fixed to the outer wall of the linkage gear (42). A transmission belt (43) is connected between the first pulley (41) and the second pulley (44). A drive gear (46) is provided on one side of the broken gear (45) and is intermittently driven by the broken gear (45). The drive gear (46) is coaxially fixed with the coupling (55).

10. A method for preheating and welding steel components, using any one of the steel component preheating and welding apparatuses as described in claims 1-9, characterized in that, Includes the following steps: Step 1: Connect the power supply and start the resistance wire device (9) and motor (21). The motor (21) drives the fan (24) to rotate through the small sprocket (22) and chain (23), and blows the high temperature generated by the resistance wire device (9) to the components on the lower side. Step 2: The rotating fan (24) drives the small gear (29) to rotate synchronously. The small gear (29) drives the large gear (28) to rotate. The large gear (28) drives the external gear ring (26) to rotate in the two joints (14) through the internal gear ring (27). The external gear ring (26) drives the linkage gear (42) to rotate. Under the action of the first pulley (41), the second pulley (44) and the transmission belt (43), the linkage gear (42) drives the incomplete gear (45) to rotate. The incomplete gear (45) can drive the drive gear (46) once for each rotation, and then drive the coupling (55) once, so that the chain conveyor (5) is intermittently driven. Step 3: The intermittent transmission chain conveyor (5) can push the clamping mechanism (3) on one side of the preheating box (1) into the preheating box (1) by pushing the flip plate (13). At the same time, the clamping mechanism (3) originally located inside the preheating box (1) can push the flip plate (13) to move to the outside of the preheating box (1). The flip plate (13) automatically closes under its own gravity. Step 4: The two components to be welded are spliced ​​and installed by the clamping mechanism (3). The components are placed between the two clamping parts (37). By rotating the adjusting screw (38) and referring to the scale line and pointer, the position of the two clamping parts (37) is adjusted to stably clamp the components to be welded. Then, the handle (391) is rotated. When the first main gear (392), the second main gear (393) and the bidirectional screw (394) are in action, the two support columns (35) can move closer to each other to splice the two components. Step 5: The clamping mechanism (3) that has been preheated and removed from the preheating box (1) is in the interruption period of the chain conveyor (5), that is, the incomplete gear (45) and the drive gear (46) are not meshed. At this time, the welding gun (75) on the welding mechanism (7) is located directly above the splicing point of the two components, and the clamping mechanism (3) is adjacent to the side of the linkage rack (56). Step 6: When the chain conveyor (5) continues to drive, the chain (53) drives the clamping mechanism (3) to move forward and to the right. At the same time, the connecting plate (31) on the clamping mechanism (3) will push the right angle plate (67), so that the right angle plate (67) pushes the fixed frame (64), thereby enabling the limiting block (87), the right angle frame (63), the mounting base (61) and the clamping mechanism (3) to move synchronously, thereby enabling the welding mechanism (7) to move synchronously to the right with the component to be welded, and compressing the reset spring (86) through the limiting block (87); Step 7: When the installation mechanism (6) moves initially, the insertion rod (62) moves along the inclined rail to the horizontal rail, causing the mounting base (61), right angle bracket (63), fixed frame (64) and limiting block (87) to move down. The right angle bracket (63) drives the welding mechanism (7) to move down, so that the bottom end of the welding gun (75) on the welding mechanism (7) falls to the position to be welded on the component. The limiting block (87) and guide shaft (85) allow the slider (84) to slide down in accordance with the inside of the upright frame (82). Step 8: During the movement of the clamping mechanism (3), under the meshing transmission of the toothed column (34) and the linkage rack (56), the toothed column (34) can drive the turntable (33) to rotate, thereby driving the clamped component to rotate, so that the component can be welded by the welding gun (75). Step 9: When the component is not cylindrical but square steel, the position of the inner threaded sleeve (76) is raised or lowered by rotating the inner threaded sleeve (76) on the threaded rod (77). The distance between the welding gun (75) and the component can be adjusted by the inner threaded sleeve (76) contacting the outer wall of the component. As the square steel rotates, the inner threaded sleeve (76) can be pushed to raise or lower the top plate (79) through the threaded rod (77), so that the telescopic rod (74) can extend or retract accordingly under the action of the suspension spring (78). Step 10: When the horizontal plate on the right-angle plate (67) moves to the inclined block (83), as the right-angle plate (67) continues to move to the right, it is squeezed by the inclined block (83), causing the horizontal plate of the right-angle plate (67) to slide along the inclined surface of the inclined block (83) and be offset from the connecting plate (31). The clamping mechanism (3) is conveyed to the right by the chain conveyor (5) and no longer pushes the installation mechanism (6), so that the installation mechanism (6) and the welding mechanism (7) automatically reset.

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