Welding equipment for steel structure production

Abstract

The invention belongs to the technical field of steel structure welding, particularly relates to welding equipment for steel structure production, and aims to solve the problem that in the prior art, a positioning mechanism can cause deviation of an originally designed welding seam position of a steel structure in the steel turning process, and then deviation of a later welding seam is caused. Two parallel ground rails are fixed to the positions, close to the ground, of the side face of the main supporting frame, and the same sliding supporting frame is slidably connected to the upper portions of the two ground rails. According to the clamping device, when the clamped steel structure body rotates to any position and stops, structural self-locking can be formed at the same time, the clamping device is matched with a main body positioning clamping device, the clamping degree is controlled by the extrusion force of the end of the extension rod of the hydraulic ejector rod, the clamping force can be controlled to be increased as much as possible, a certain buffer space is reserved all the time, and the service life of the clamping device is prolonged. And rigid contact is prevented from being formed, so that an extrusion notch is formed in the contact position of the steel structure body.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure welding, and in particular to welding equipment for steel structure production. Background Art

[0002] Steel structure refers to structural components made of angle steel, steel plate, channel steel and other steel or other combinations, and is an indispensable part of steel construction. Steel structures are mostly assembled by welding. During the welding process of steel structures, positioning devices are required to ensure the welding quality of the joints.

[0003] After searching, it is found that most of the robot welding in the prior art will set the welding program before welding. After the welding on one side is completed, the other side needs to be welded. If the positioning mechanism in the positioning bed used to fix the steel structure is not strong enough, position deviation will inevitably occur during the flipping process. At this time, if welding is still carried out according to the previously set program, it is very likely to cause weld deviation. Therefore, we propose a new type of welding equipment for steel structure production to avoid this phenomenon. Summary of the invention

[0004] In view of the technical problem that the positioning mechanism in the prior art may cause the originally designed weld position of the steel structure to shift during the steel turning process, which in turn may cause the weld to shift in the later stage, the present invention adopts the following technical solution:

[0005] A welding device for steel structure production, comprising a main support frame fixed to the ground, two parallel ground rails are fixed to the side of the main support frame close to the ground, the same sliding support frame is slidably connected above the two ground rails, the sliding support frame and the middle of the top of the main support frame are both provided with an arc-shaped notch, and a driven swivel seat 2 and an active swivel seat 1 that can rotate are respectively provided in the two arc-shaped notches, and the driven swivel seat 2 and the active swivel seat 1 have the same main structure and are symmetrical to each other, and the active swivel seat 1 is clamped in the sliding support frame; a rectangular notch recessed toward the center of the circle is reserved on the circumferential outer wall of the active swivel seat 1, and main body positioning clamps are provided on opposite sides of the rectangular notch; the main body positioning clamp comprises a clamp embedded in the rectangular notch The hydraulic push rods on the two opposite sides of the shaped notch, the extension line of the hydraulic push rod extension rod passes through the center of the circle; and the end of the hydraulic push rod extension rod is fixed with a plate seat, and the side of the plate seat away from the hydraulic push rod is fixed with hinged ear plates near the four corners, and two symmetrical anti-unhooking pressure rods are rotatably connected between the four hinged ear plates, and a reset spring is fixed between the opposite ends of the two anti-unhooking pressure rods and the plate seat; and a rubber clip is fixed on the inner arc side of the end of the anti-unhooking pressure rod away from the reset spring; worm gear teeth are reserved at the circumferential edge of the side of the active swivel seat away from the main support frame, and a reduction motor is fixed to the bottom end of the side of the sliding support frame away from the main support frame, and a worm sleeve matching the worm gear teeth is fixed to the top of the output shaft of the reduction motor.

[0006] Preferably, the two arc-shaped notches are both clamped with grooved slide rails with openings facing inward and tightly attached to the inner walls of the arc-shaped notches, and the circumferential outer walls of the driven swivel seat 2 and the active swivel seat 1 are both fixed with arc-shaped slide rail rods that are compatible with the grooved slide rails, and the center angle of the line connecting the two ends of the arc-shaped slide rail is the same as the center angle of the worm gear teeth, and the center angle is 200-230 degrees, ensuring that the active swivel seat 1 can be flipped at any angle between 0 and 180 degrees under the drive of the worm sleeve.

[0007] Preferably, two symmetrical supporting edge plates are reserved at the bottom of the sliding support frame, and the lower surface of the supporting edge plates is provided with anti-drop grooves adapted to the ground rails; ensuring that the sliding support frame can slide to a distance adapted to the steel structure body, it can support the steel structure body without hindering the welding of the surface of the steel structure body.

[0008] Preferably, push rod mounting holes are provided on the inner walls on both sides opposite to the rectangular notch of the active swivel seat; and the hydraulic push rod is fixedly connected in the push rod mounting holes; a triangular fixing block is fixed on the side of the plate seat away from the hydraulic push rod, and the reset springs at the ends of the two anti-unhooking pressure rods are respectively fixed on both sides of the triangular fixing block; the number of reset springs is greater than or equal to two; and the number of reset springs on both sides is the same; ensuring that the extrusion pressures generated by the two anti-unhooking pressure rods are the same, thereby avoiding deformation caused by different extrusion pressures generated on the two side edges of the steel structure body.

[0009] Preferably, an axis fixing block is fixed in the middle of the bottom of the rectangular notch of the active swivel seat one, and a rotating shaft one is fixed at the end of the axis fixing block, the rotating shaft one is parallel to the axis center line of the active swivel seat one, and a sliding bearing is sleeved on the outer wall of the rotating shaft one, a rocker arm is fixed on the outer wall of the sliding bearing, a counterweight block is fixed at the end of the rocker arm away from the sliding bearing; a compression spring coinciding with the axis center line of the rocker arm is fixed at the end of the counterweight block away from the rocker arm, and a contact piece one is fixed at the end of the compression spring away from the counterweight block; at the bottom of the rectangular notch of the active swivel seat one, symmetrical vertical signal receivers are fixed at the other two corners, and the vertical signal receiver includes an L-shaped fixing plate, and a contact piece two is fixed on the L-shaped fixing plate that can contact the contact piece one when in a vertical state; and the contact piece one and the contact piece two constitute a signal switch for controlling the reduction motor to stop.

[0010] Preferably, the active swivel seat is also provided with set angle positioning points at different angles for positioning on one side close to the counterweight block, and the structure of the set angle positioning points is the same as that of the vertical signal receiver; the device can be allowed to stay at the angle where it needs to stop, such as special angles such as 45 degrees or 30 degrees.

[0011] Preferably, a transmission rod is fixed to the end of the worm sleeve away from the reduction motor, and a shaft seat matching the diameter of the transmission rod is fixed to the side of the sliding support frame, and a brake rubber wheel is fixed to the end of the transmission rod away from the worm sleeve; an electromagnet is slidably connected to the side of the sliding support frame near the top of the brake rubber wheel, and a brake block that can press the brake rubber wheel tightly is fixed to the lower surface of the electromagnet; a fixing piece is fixed to the side of the sliding support frame near the top of the electromagnet, and a permanent magnet that repels the electromagnet when energized is clamped in the middle of the fixing piece.

[0012] Preferably, a pipe locator is provided on the web of the steel structure body, and the pipe locator is used to assist in vertically welding rod-shaped objects such as internally threaded pipes or bolts on the web, and the pipe locator includes a missing corner triangular block, the whole of which is a right-angled triangular prism cut off at a right angle, and the missing corner triangular block is reserved with a right-angled surface one and a right-angled surface two that are perpendicular to each other, and an arc-shaped abutment groove is opened in the middle of the right-angled surface two; the center line of the arc-shaped abutment groove is parallel to the plane where the right-angled surface two is located; through such an arrangement, before welding, it is only necessary to place the rod-shaped object to be welded close to the arc-shaped abutment groove, and the other right-angled surface one of the missing corner triangular block is attached to the web.

[0013] Preferably, both sides of the corner-missing triangle block are provided with symmetrical hinge notches at the ends close to the right-angle surface one, and the top inner walls of the two hinge notches are fixed with anti-drop hanging shafts extending vertically downward, and the two anti-drop hanging shafts are rotatably connected with horizontally rotating extension rods, the lower surface of the extension rotating rod is on the same plane as the right-angle surface one, and the end of the extension rotating rod away from the hinge point is clamped with a magnet block.

[0014] Preferably, horizontal tensioning screws are fixed on the front and rear sides of the missing corner triangle block near the middle of the second right-angle surface, and the ends of the two tensioning screws are slidably sleeved with the same roller fixing frame, and two symmetrical and vertical long rollers are provided on the side of the roller fixing frame close to the arc-shaped groove, and the ends of the two tensioning screws are threaded with locking nuts; through the set roller fixing frame, the rod-shaped object to be welded can be tightly fixed in the arc-shaped groove, so as to free both hands for auxiliary positioning and welding.

[0015] The beneficial effects of the present invention are:

[0016] 1. By rotating the active swivel seat driven by the worm sleeve, the clamped steel structure body can be rotated to any position and stopped. At the same time, the structure can be self-locked. In conjunction with the main body positioning clamp, the clamping degree is controlled by the extrusion force of the extension rod end of the hydraulic push rod. It can not only control the clamping force as much as possible, but also always reserve a certain buffer space to avoid rigid contact, so as to form an extrusion gap at the contact point of the steel structure body.

[0017] 2. By setting the contact piece 1 and the vertical signal receiver at the bottom of the counterweight block, when the two main positioning clamps are controlled to rotate the steel structure body to a vertical state, the contact piece 1 can be brought into contact with one of the contact pieces 2. At this time, the reduction motor will be immediately controlled to stop rotating, thereby achieving precise positioning.

[0018] 3. By setting the electromagnet and brake block, the electromagnet can be energized while the vertical signal is sent out. At this time, the worm sleeve will be tightly locked to prevent the active swivel seat from rotating in the opposite direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the positioning bed in the present invention;

[0020] Figure 2 It is a side view of the positioning bed in the present invention;

[0021] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 4 This is a schematic diagram of the overall structure of the positioning bed when it is flipped 45 degrees in the present invention;

[0023] Figure 5 It is an assembly diagram of the active swivel seat 1 in the present invention;

[0024] Figure 6 It is a schematic diagram of the exploded structure of the main body positioning clamp in the present invention;

[0025] Figure 7 It is a schematic diagram of the exploded structure of the pipe positioner in the present invention;

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the missing corner triangle block in the present invention.

[0027] In the figure: 1. Main support frame; 2. Driven swivel seat 2; 3. Pipe locator; 301. Missing triangle block; 302. Hinge notch; 303. Anti-drop hanging shaft; 304. Extended rotating rod; 305. Magnet block; 306. Tightening screw; 307. Roller fixing frame; 308. Long roller; 309. Locking nut; 310. Arc-shaped groove; 311. Right-angle surface 1; 4. Steel structure body; 5. Sliding support frame; 501. Arc-shaped notch; 502. Support edge plate; 6. Hydraulic ejector; 7. Main body positioning clamp; 701. Plate seat; 702. Hinge ear plate; 703. Anti-drop hook Pressure rod; 704, rubber clamp; 705, reset spring; 706, triangular fixing block; 8, vertical signal receiver; 801, contact piece 2; 9, active swivel seat 1; 901, top rod mounting hole; 10, worm gear; 11, reduction motor; 12, worm sleeve; 13, transmission rod; 14, shaft rod seat; 15, brake rubber wheel; 16, brake block; 17, electromagnet; 18, fixing piece; 19, permanent magnet; 20, ground rail; 21, shaft rod fixing block; 22, rocker arm; 23, counterweight; 24, arc slide rail; 25, compression spring; 26, contact piece 1; 27, groove slide rail. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Reference Figure 1-8A welding device for steel structure production comprises a main support frame 1 fixed to the ground, two parallel ground rails 20 are fixed to the side of the main support frame 1 close to the ground, and a sliding support frame 5 is slidably connected above the two ground rails 20, and arc-shaped notches 501 are opened in the middle of the top of the sliding support frame 5 and the main support frame 1, and a driven rotating ring seat 2 and an active rotating ring seat 1 9 that can rotate are respectively arranged in the two arc-shaped notches 501, and the main structures of the driven rotating ring seat 2 and the active rotating ring seat 1 9 are the same and symmetrical to each other, and the main support frame 1 is provided with a plurality of arc-shaped notches 501 ... The movable swivel seat 9 is clamped in the sliding support frame 5; the outer wall of the circumference of the active swivel seat 9 is reserved with a rectangular notch recessed toward the center of the circle, and the two opposite sides of the rectangular notch are provided with a main body positioning clamp 7; the main body positioning clamp 7 includes a hydraulic push rod 6 embedded in the opposite sides of the rectangular notch, and the extension line of the extension rod of the hydraulic push rod 6 passes through the center of the circle; and the end of the extension rod of the hydraulic push rod 6 is fixed with a plate seat 701, and the side of the plate seat 701 away from the hydraulic push rod 6 is fixed with hinged ear plates 702 near the four corners, and the four hinged ear plates 7 There are two symmetrical anti-unhooking pressure rods 703 rotatably connected between 02, and a reset spring 705 is fixed between the opposite end of the two anti-unhooking pressure rods 703 and the plate seat 701; and a rubber clamp 704 is fixed on the inner arc side of the end of the anti-unhooking pressure rod 703 away from the reset spring 705; a worm gear 10 is reserved near the circumferential edge of the active swivel seat 9 away from the main support frame 1, and a reduction motor 11 is fixed near the bottom end of the side of the sliding support frame 5 away from the main support frame 1, and the top of the output shaft of the reduction motor 11 A worm sleeve 12 matched with the worm gear teeth 10 is fixed; by driving the active swivel seat 9 driven by the worm sleeve 12 to rotate, the clamped steel structure body 4 can be rotated to any position and stopped. At the same time, the structure can be self-locked, and the main body positioning clamp 7 is cooperated with the main body positioning clamp 7. The clamping degree is controlled by the extrusion pressure of the extension rod end of the hydraulic push rod 6. It can not only control the clamping force to the greatest extent possible, but also always reserve a certain buffer space to avoid rigid contact, so as to cause an extrusion gap at the contact point of the steel structure body 4.

[0030] Reference Figure 4-Figure 5 The two arc-shaped notches 501 are both clamped with grooved slide rails 27 with openings facing inward and tightly attached to the inner walls of the arc-shaped notches 501, and the circumferential outer walls of the driven swivel seat 22 and the active swivel seat 19 are both fixed with arc-shaped slide rail rods 24 adapted to the grooved slide rails 27. The center angle of the line connecting the two ends of the arc-shaped slide rail rod 24 is the same as the center angle of the worm gear tooth 10, and the center angle is 200-230 degrees, ensuring that the active swivel seat 19 can be turned at any angle between 0 and 180 degrees under the drive of the worm sleeve 12.

[0031] Reference Figure 4-Figure 5Two symmetrical supporting plates 502 are reserved at the bottom of the sliding support frame 5, and the lower surface of the supporting plate 502 is provided with an anti-dropping groove adapted to the ground rail 20; ensuring that the sliding support frame 5 can slide to a distance adapted to the steel structure body 4, it can support the steel structure body 4 without hindering the welding of the surface of the steel structure body 4.

[0032] Reference Figure 5-Figure 6 , the inner walls on both sides opposite to the rectangular notch of the active swivel seat 9 are provided with push rod mounting holes 901; and the hydraulic push rod 6 is fixedly connected in the push rod mounting hole 901; a triangular fixing block 706 is fixed on the side of the plate seat 701 away from the hydraulic push rod 6, and the reset springs 705 at the ends of the two anti-unhooking pressure rods 703 are respectively fixed on both sides of the triangular fixing block 706; the number of reset springs 705 is greater than or equal to two; and the number of reset springs 705 on both sides is the same; ensure that the extrusion pressure generated by the two anti-unhooking pressure rods 703 is the same, so as to avoid deformation caused by different extrusion pressures on the two side edges of the steel structure body 4.

[0033] Reference Figure 2-Figure 5 A shaft fixing block 21 is fixed in the middle of the bottom of the rectangular notch of the active swivel seat 9, and a rotating shaft 1 is fixed at the end of the shaft fixing block 21. The rotating shaft 1 is parallel to the axis line of the active swivel seat 9, and a sliding bearing is sleeved on the outer wall of the rotating shaft 1. A swing rod 22 is fixed on the outer wall of the sliding bearing, and a counterweight 23 is fixed on the end of the swing rod 22 away from the sliding bearing; a compression spring 25 coinciding with the axis line of the swing rod 22 is fixed on the end of the counterweight 23 away from the swing rod 22, and a contact piece 26 is fixed on the end of the compression spring 25 away from the counterweight 23; the bottom of the rectangular notch of the active swivel seat 9 is located At the other two corners, symmetrical vertical signal receivers 8 are fixed respectively, and the vertical signal receiver 8 includes an L-shaped fixing plate, and the L-shaped fixing plate is fixed with a contact piece 2 801 that can contact the contact piece 1 26 when in a vertical state; and the contact piece 1 26 and the contact piece 2 801 constitute a signal switch for controlling the reduction motor 11 to stop; through such an arrangement, when the two main body positioning clamps 7 are controlled to rotate the steel structure body 4 to a vertical state, the contact piece 1 26 can be made to contact one of the contact pieces 2 801, and the reduction motor 11 will be immediately controlled to stop rotating, thereby forming precise positioning.

[0034] In the present invention, the active swivel seat 9 is also provided with set angle positioning points at different angles for positioning on one side close to the counterweight block 23. The structure of the set angle positioning points is the same as that of the vertical signal receiver 8; the device can be allowed to stay at the angle where it needs to stop, such as special angles such as 45 degrees or 30 degrees.

[0035] Reference Figure 1-Figure 2 and Figure 4A transmission rod 13 is fixed to the end of the worm sleeve 12 away from the reduction motor 11, and a shaft seat 14 matched with the diameter of the transmission rod 13 is fixed to the side of the sliding support frame 5, and a brake rubber wheel 15 is fixed to the end of the transmission rod 13 away from the worm sleeve 12; an electromagnet 17 is slidably connected to the upper side of the brake rubber wheel 15 near the side of the sliding support frame 5, and a brake block 16 that can press the brake rubber wheel 15 tightly is fixed to the lower surface of the electromagnet 17; a fixing piece 18 is fixed to the upper side of the sliding support frame 5 near the electromagnet 17, and a permanent magnet 19 that repels the electromagnet 17 after power is turned on is clamped in the middle of the fixing piece 18; by setting the electromagnet 17 and the brake block 16, the electromagnet 17 can be controlled to be powered on at the same time as the vertical signal is sent, at which time the worm sleeve 12 will be tightly locked to prevent the active swivel seat 9 from rotating in the opposite direction.

[0036] Reference Figure 7-8 A pipe locator 3 is provided on the web of the steel structure body 4, and the pipe locator 3 is used to assist in vertically welding rod-shaped objects such as internal threaded pipes or bolts on the web, and the pipe locator 3 includes a missing corner triangular block 301, and the missing corner triangular block 301 is composed of a right-angled triangular prism with a right angle cut off, and the missing corner triangular block 301 is reserved with a right-angled surface 1 311 and a right-angled surface 2 that are perpendicular to each other, and an arc-shaped groove 310 is opened in the middle of the right-angled surface 2; the center line of the arc-shaped groove 310 is parallel to the plane where the right-angled surface 2 is located; through such an arrangement, before welding, it is only necessary to place the rod-shaped object to be welded close to the arc-shaped groove 310, and the other right-angled surface 1 311 of the missing corner triangular block 301 is attached to the web.

[0037] Reference Figure 7-8 , symmetrical hinge notches 302 are respectively provided at the ends of the two sides of the missing corner triangle block 301 near the right-angle surface 1 311, and the top inner walls of the two hinge notches 302 are fixed with anti-dropping hanging shafts 303 extending vertically downward, and the two anti-dropping hanging shafts 303 are rotatably connected with horizontally rotating extension rods 304, the lower surface of the extension rotating rod 304 is on the same plane as the right-angle surface 1 311, and the end of the extension rotating rod 304 away from the hinge point is clamped with a magnet block 305; by setting the extension rotating rod 304 and the magnet block 305, the stability of the missing corner triangle block 301 can be increased, and the missing corner triangle block 301 can be temporarily fixed to facilitate the position adjustment and spot welding of the rod-shaped object.

[0038] Reference Figure 7-8Horizontal tensioning screws 306 are fixed on the front and rear sides of the missing corner triangle block 301 near the middle of the right angle surface 2, and the ends of the two tensioning screws 306 are slidably sleeved with the same roller fixing frame 307. Two symmetrical and vertical long rollers 308 are arranged on the side of the roller fixing frame 307 near the arc-shaped groove 310, and the ends of the two tensioning screws 306 are screwed with locking nuts 309; through the roller fixing frame 307, the rod-shaped object to be welded can be tightly fixed in the arc-shaped groove 310, so as to free both hands for auxiliary positioning and welding.

[0039] Before using the device, first control the reduction motor 11 to rotate, so as to drive the active swivel seat 1 9 and the driven swivel seat 2 to rotate to a state where the rectangular notch openings thereof face upwards, and then control the main body positioning clamp 7 in the rectangular notch to be in the initial state, and then the steel structure body 4 to be welded can be hoisted into the two rectangular notches, and then simultaneously control the positioning clamps 7 on both sides to start, so as to position and clamp the steel structure body 4; and then rotate according to the required welding angle; by means of the worm sleeve 12 driving the active swivel seat 1 9 to rotate, when the clamped steel structure body 4 is The body 4 rotates to any position and stops, and at the same time, the structure can be self-locked, and through the electromagnet 17 and the brake block 16, when the vertical signal is sent, the electromagnet 17 is controlled to be energized at the same time, and the worm sleeve 12 is tightly locked to prevent the active swivel seat 9 from rotating in the opposite direction; cooperate with the main body positioning clamp 7, the clamping degree of which is controlled by the extrusion force of the extension rod end of the hydraulic push rod 6, which can not only control the clamping force to increase as much as possible, but also always reserve a certain buffer space to avoid the formation of rigid contact, so as to cause an extrusion gap at the contact of the steel structure body 4;

[0040] By setting the pipe positioner 3, before welding, it is only necessary to place the rod-shaped object to be welded close to the arc-shaped abutment groove 310, and to place the other right-angled surface 311 of the missing-angle triangle block 301 on the web.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A welding device for steel structure production, comprising a main support frame (1) fixed to the ground, two parallel ground rails (20) fixed to the side of the main support frame (1) close to the ground, and a same sliding support frame (5) slidably connected above the two ground rails (20), characterized in that: The sliding support frame (5) and the main support frame (1) are both provided with an arc-shaped notch (501) at the middle of the top end, and a driven swivel seat 2 (2) and an active swivel seat 1 (9) that can rotate are respectively arranged in the two arc-shaped notches (501), and the driven swivel seat 2 (2) and the active swivel seat 1 (9) have the same main structure and are symmetrical to each other, and the active swivel seat 1 (9) is clamped in the sliding support frame (5); the circumferential outer wall of the active swivel seat 1 (9) is reserved with a rectangular notch that is recessed toward the center of the circle, and main body positioning clamps (7) are arranged on opposite sides of the rectangular notch; the main body positioning clamp (7) includes a hydraulic push rod (6) embedded in opposite sides of the rectangular notch, and the extension line of the extension rod of the hydraulic push rod (6) passes through the center of the circle; and the end of the extension rod of the hydraulic push rod (6) is fixed with a plate seat (701), and the plate seat (701) is fixed with hinged ear plates (702) near the four corners on the side away from the hydraulic push rod (6), and two symmetrical anti-unhooking pressure rods (703) are rotatably connected between the four hinged ear plates (702), and a reset spring (705) is fixed between the opposite ends of the two anti-unhooking pressure rods (703) and the plate seat (701); and a rubber clip (704) is fixed on the inner arc side of the end of the anti-unhooking pressure rod (703) away from the reset spring (705); the active swivel seat (9) is reserved with worm gear teeth (10) near the circumferential edge on the side away from the main support frame (1), and a reduction motor (11) is fixed on the side away from the main support frame (1) near the bottom end, and a worm sleeve (12) matched with the worm gear teeth (10) is fixed on the top of the output shaft of the reduction motor (11).

2. A welding device for steel structure production according to claim 1, characterized in that: The two arc-shaped notches (501) are both clamped with grooved rails (27) with openings facing inwards and in close contact with the inner walls of the arc-shaped notches (501), and the circumferential outer walls of the driven rotating ring seat 2 (2) and the active rotating ring seat 1 (9) are both fixed with arc-shaped rail rods (24) adapted to the grooved rails (27), and the center angle of the line connecting the two ends of the arc-shaped rail rod (24) is the same as the center angle of the worm gear teeth (10), and the center angle is 200-230 degrees.

3. A welding device for steel structure production according to claim 1, characterized in that: Two mutually symmetrical supporting edge plates (502) are reserved at the bottom of the sliding support frame (5), and anti-dropping grooves matching the ground rail (20) are opened on the lower surface of the supporting edge plates (502).

4. A welding device for steel structure production according to claim 1, characterized in that: The inner walls on both sides opposite to the rectangular notch of the active swivel seat (9) are provided with push rod mounting holes (901); and the hydraulic push rod (6) is fixedly connected in the push rod mounting hole (901); a triangular fixing block (706) is fixed on the side of the support plate seat (701) away from the hydraulic push rod (6), and the reset springs (705) at the ends of the two anti-unhooking pressure rods (703) are respectively fixed on the two sides of the triangular fixing block (706); the number of the reset springs (705) is greater than or equal to two; and the number of the reset springs (705) on both sides is the same.

5. A welding device for steel structure production according to claim 1, characterized in that: A shaft fixing block (21) is fixed in the middle of the bottom of the rectangular notch of the active rotating ring seat (9), and a rotating shaft (1) is fixed at the end of the shaft fixing block (21), the rotating shaft (1) is parallel to the axis of the active rotating ring seat (9), and a sliding bearing is sleeved on the outer wall of the rotating shaft (1), a swing rod (22) is fixed on the outer wall of the sliding bearing, and a counterweight (23) is fixed on the end of the swing rod (22) away from the sliding bearing; a compression spring (23) coinciding with the axis of the swing rod (22) is fixed on the end of the counterweight (23) away from the swing rod (22). 5), and a contact piece 1 (26) is fixed to one end of the compression spring (25) away from the counterweight (23); vertical signal receivers (8) symmetrical to each other are fixed at the bottom of the rectangular notch of the active swivel seat 1 (9) and at the other two corners, and the vertical signal receiver (8) includes an L-shaped fixing plate, and a contact piece 2 (801) that can contact the contact piece 1 (26) when in a vertical state is fixed on the L-shaped fixing plate; and the contact piece 1 (26) and the contact piece 2 (801) constitute a signal switch for controlling the reduction motor (11) to stop.

6. A welding device for steel structure production according to claim 5, characterized in that: The active swivel seat (9) is also provided with a set angle positioning point at different angles for positioning on one side close to the counterweight (23). The structure of the set angle positioning point is the same as that of the vertical signal receiver (8).

7. A welding device for steel structure production according to claim 5, characterized in that: A transmission rod (13) is fixed to one end of the worm gear sleeve (12) away from the reduction motor (11), and a shaft seat (14) matched with the diameter of the transmission rod (13) is fixed to the side of the sliding support frame (5), and a brake rubber wheel (15) is fixed to one end of the transmission rod (13) away from the worm gear sleeve (12); an electromagnet (17) is slidably connected to the side of the sliding support frame (5) near the top of the brake rubber wheel (15), and a brake block (16) capable of pressing the brake rubber wheel (15) is fixed to the lower surface of the electromagnet (17); a fixing piece (18) is fixed to the side of the sliding support frame (5) near the top of the electromagnet (17), and a permanent magnet (19) is clamped in the middle of the fixing piece (18) and repels the electromagnet (17) after power is supplied.

8. A welding device for steel structure production according to claim 1, characterized in that: A pipe locator (3) is provided on the web of the steel structure body (4), and the pipe locator (3) is used to assist in vertically welding rod-shaped objects such as internally threaded pipes or bolts on the web, and the pipe locator (3) comprises a missing corner triangular block (301), the missing corner triangular block (301) is a right-angled triangular prism with a right angle cut off, and the missing corner triangular block (301) is reserved with a right-angled surface 1 (311) and a right-angled surface 2 that are perpendicular to each other, and an arc-shaped abutment groove (310) is opened in the middle of the right-angled surface 2; the center line of the arc-shaped abutment groove (310) is parallel to the plane where the right-angled surface 2 is located.

9. A welding device for steel structure production according to claim 8, characterized in that: The ends of the two sides of the missing corner triangle block (301) close to the right angle surface 1 (311) are respectively provided with mutually symmetrical hinge notches (302), and the top inner walls of the two hinge notches (302) are fixed with anti-dropping hanging shafts (303) extending vertically downward, and the two anti-dropping hanging shafts (303) are rotatably connected with horizontally rotatable extension rods (304), the lower surface of the extension rotating rod (304) and the right angle surface 1 311 are on the same plane, and the end of the extension rotating rod (304) away from the hinge point is clamped with a magnet block (305).

10. A welding device for steel structure production according to any one of claims 8-9, characterized in that: Horizontal tensioning screws (306) are fixed on the front and rear sides of the missing corner triangle block (301) near the middle of the second right-angle surface, and the ends of the two tensioning screws (306) are slidably sleeved with the same roller fixing frame (307), and two symmetrical and vertical long rollers (308) are arranged on one side of the roller fixing frame (307) near the arc-shaped groove (310), and the ends of the two tensioning screws (306) are both screwed with locking nuts (309).

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