A welding device for fire prevention smoke exhaust pipes

Abstract

The present invention relates to the technical field of fire-fighting pipe welding equipment, and provides a fire-fighting smoke and exhaust pipe welding equipment, including an operating table and a back plate located on the top of the operating table, a pair of legs fixedly connected to the bottom of the operating table, a crossbeam fixedly connected between the pair of legs, a pair of rectangular through holes are provided on the top of the operating table, a plurality of transport rollers are provided in the pair of rectangular through holes, the two ends of the transport rollers are rotatably connected to the two sides of the inner wall of the rectangular through holes, a plurality of limit strips are provided around the transport rollers, and the plurality of limit strips are fixedly connected to the top of the operating table, a pair of openings are provided on the top of the operating table, a pair of the openings are located on both sides of one of the rectangular through holes, and a bending mechanism is provided on the operating table; the present invention cooperates with the bending mechanism with the internal support assembly and the welding assembly, so that the bending of the metal plate to form the smoke exhaust pipe can be completed quickly, thereby improving production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of fire protection pipe welding equipment, in particular to fire protection smoke exhaust pipe welding equipment. Background Art

[0002] Fire smoke exhaust duct is a safety facility. Its main function is to discharge thick smoke, harmful gases and other toxic substances from indoors to outside the building after a fire occurs, so as to ensure the indoor air quality and personnel safety. Smoke exhaust duct can be divided into circular smoke exhaust duct, rectangular smoke exhaust duct and oblate smoke exhaust duct according to the cross-sectional shape. Among them, circular smoke exhaust duct has the smallest resistance but the largest height dimension and is complex to manufacture, so rectangular smoke exhaust duct is mainly used.

[0003] At present, the production process of rectangular air ducts is to first bend the cut metal plates, and then align the gaps in the metal plates that need to be welded, and then manually weld them to complete the formation of the smoke exhaust duct. In the above process, the bending of the metal plates to form the smoke exhaust duct needs to be divided into multiple steps and divided into different labors, which is time-consuming and labor-intensive, and has low production efficiency. In addition, during manual welding, it is impossible to ensure the stability of the movement of the welding gun and control the distance between the welding gun and the seam, which can easily lead to distortion of the weld and welding through the metal plate, affecting the production quality of the product. Summary of the Invention

[0004] The present invention provides a fire-fighting smoke and exhaust pipe welding device, which solves the problem that the bending of metal plates into exhaust pipes needs to be divided into multiple steps and divided into two stages in the background technology, which is time-consuming and labor-intensive, through the cooperation of a bending mechanism, an internal support component and a welding component.

[0005] The technical solutions of the present invention are as follows:

[0006] A fire-fighting smoke and exhaust pipe welding device, comprising an operating table and a backboard located on the top of the operating table, a pair of legs fixedly connected to the bottom of the operating table, a crossbeam fixedly connected between the pair of legs, a pair of rectangular through-holes formed on the top of the operating table, a plurality of transport rollers provided in each of the pair of rectangular through-holes, the ends of the transport rollers being rotatably connected to the inner walls of the rectangular through-holes, a plurality of limit bars being provided around the transport rollers, the plurality of limit bars being fixedly connected to the top of the operating table, a pair of openings formed on the top of the operating table, a pair of the openings being located on both sides of one of the rectangular through-holes, and a bending mechanism being provided on the operating table;

[0007] Material toggling mechanism, its both ends are fixedly connected to the top of the sliding frame, and the sliding frame has a plurality of sliding members, each of which is connected to the bottom of the sliding frame by a plurality of sliding members. The plurality of sliding members have respective opposite ends, and the plurality of sliding members have respective opposite ends.

[0008] Furthermore, the bending mechanism also includes a through slot opened on the top of the operating table, a moving block is provided in the through slot, the moving block is slidably connected to the through slot, a positioning rod and a screw rod are respectively inserted through the side walls of the moving block, the moving block is slidably connected to the positioning rod, the moving block is threadedly connected to the screw rod, and both ends of the positioning rod are fixedly connected to the two sides of the inner wall of the through slot.

[0009] Furthermore, a pair of mounting plates are fixedly connected to the bottom of the operating table, one end of the screw rod is rotatably connected to one of the mounting plates, the other end of the screw rod horizontally passes through the other mounting plate and is rotatably connected to the mounting plate, one end of the screw rod horizontally passing through the mounting plate is fixedly connected to a first motor through a coupling, the first motor is fixedly connected to the bottom of the operating table, and an L-shaped bent straight plate is fixedly connected to the top of the moving block.

[0010] Furthermore, an inner support assembly is provided on one side of the back panel, and the inner support assembly includes four positioning pins, and the four positioning pins are fixedly connected to one side of the back panel. Four sliding grooves are opened through the side wall of the back panel, and connecting rods are inserted into the four sliding grooves. The connecting rods are slidably connected to the sliding grooves. Rings are sleeved on the four positioning pins, and the rings are slidably connected to the positioning pins. The rings are fixedly connected to one end of the connecting rod.

[0011] Furthermore, four bending rods are provided on one side of the back plate, and a hinge seat is provided on one side of each of the four bending rods. A flat plate is provided on the side of the bending rod facing the adjacent bending rod, and the two relatively arranged flat plates are slidably connected through a telescopic groove.

[0012] Furthermore, the side wall of the back panel is fixedly connected to a second drive motor, the output end of the second drive motor is fixedly connected to a cross rotating bracket, the cross rotating bracket is rotatably connected to four support arms through an axle pin, and the other ends of the four support arms are rotatably connected to the bending rod body through a hinge seat.

[0013] Furthermore, a welding assembly is provided above the inner support assembly, and the welding assembly includes a translation block, a pair of track rods are inserted horizontally through the translation block, the track rods are slidingly connected to the translation block, one end of the track rod is fixedly connected to the back plate, and the other end of the track rod is fixedly connected to the iron block, and a rack is provided above the translation block, and both ends of the rack are fixedly connected to the side wall of the back plate and the side wall of the iron block.

[0014] Furthermore, a pair of support frames are fixedly connected to the bottom of the translation block, a rectangular sleeve is fixedly connected between the pair of support frames, a welding gun is inserted through the rectangular sleeve, the welding gun is slidably connected to the rectangular sleeve, a limiting block is fixedly connected to the welding gun, a limiting groove adapted to the size of the limiting block is provided at the top of the rectangular sleeve, the limiting block is slidably connected to the limiting groove, an electric telescopic rod is fixedly connected to the top of the rectangular sleeve, and the output end of the electric telescopic rod is fixedly connected to the side wall of the limiting block.

[0015] Furthermore, a mounting platform is fixedly connected between a pair of support frames, a third drive motor is fixedly connected to the top of the mounting platform, the output end of the third drive motor passes through the translation block and extends out of the top of the translation block, the output end of the third drive motor is rotatably connected to the translation block, and the output end of the third drive motor is fixedly connected to a gear, which is engaged with the rack.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention can quickly bend metal plates through the cooperation of the bending mechanism, the inner support assembly and the welding assembly, and clamp and fix the formed smoke exhaust pipe through the flat plate, the L-shaped bending straight plate and the bending plate, so as to avoid the deformation of the metal plate causing the welding seam gap to be too large and affecting the welding effect. After welding is completed, the smoke exhaust pipe is released by resetting the bending mechanism and the inner support assembly, and the completed smoke exhaust pipe can be quickly removed from the operating table. The device can quickly bend the metal plate into the smoke exhaust pipe through the cooperation of the bending mechanism, the inner support assembly and the welding assembly, thereby improving production efficiency.

[0018] 2. The present invention drives the welding gun to translate on the track rod through the translation block, thereby improving the stability of the welding gun movement and effectively controlling the residence time of the welding gun on the surface of the weld seam, thereby avoiding welding through the metal plate. The welding gun is driven by the electric telescopic rod to slide and adjust the welding gun in the rectangular sleeve, thereby adjusting the adaptation distance between the welding gun and the weld seam, thereby avoiding the front end of the welding gun contacting the weld seam or being away from the weld seam, which leads to unsatisfactory welding effect and affects the production efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an overall three-dimensional schematic diagram of the device of the present invention;

[0020] Figure 2 It is a three-dimensional schematic diagram of the operating table of the present invention;

[0021] Figure 3 It is a three-dimensional schematic diagram of the bending mechanism of the present invention;

[0022] Figure 4 It is a three-dimensional schematic diagram of the inner support assembly of the present invention;

[0023] Figure 5 It is a three-dimensional schematic diagram of the welding assembly of the present invention;

[0024] Figure 6 This invention Figure 5 A magnified schematic diagram of point A in FIG;

[0025] Figure 7 It is a schematic plan view of the metal plate bending and welding according to the present invention.

[0026] In the picture:

[0027] 1. Operating table; 101. Support legs; 102. Crossbeam; 2. Back plate; 3. Rectangular through hole; 4. Transport roller; 5. Limit bar; 6. Opening; 7. Bending mechanism; 71. Sliding frame; 72. Sliding rod; 73. Sliding block; 74. Bending plate; 75. Crossbar; 76. Cylinder; 77. Through slot; 78. Moving block; 79. Positioning rod; 710. Screw; 711. Mounting plate; 712. First motor; 713. L-shaped bending straight plate; 8. Inner support assembly; 81. Positioning pin; 82. Slide slot; 83. Connecting rod; 84 , ring; 85, bending rod body; 86, hinge seat; 87, flat plate; 88, telescopic slot; 89, second drive motor; 810, cross rotating bracket; 811, support arm; 9, welding assembly; 91, translation block; 92, track rod; 93, iron block; 94, rack; 95, support frame; 96, rectangular sleeve; 97, welding gun; 98, limit block; 99, limit slot; 910, electric telescopic rod; 911, mounting platform; 912, third drive motor; 913, gear; 10, metal plate; 11, welding seam. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0029] The present invention provides a fire-fighting smoke and exhaust pipe welding device, comprising an operating table 1 and a backboard 2 located on the top of the operating table 1. A pair of legs 101 are fixedly connected to the bottom of the operating table 1, and a crossbeam 102 is fixedly connected between the pair of legs 101. A pair of rectangular through holes 3 are opened on the top of the operating table 1, and a plurality of transport rollers 4 are provided in each of the pair of rectangular through holes 3. The ends of the transport rollers 4 are rotatably connected to the inner walls of the rectangular through holes 3. A plurality of limit bars 5 are provided around the transport rollers 4, and the plurality of limit bars 5 are fixedly connected to the top of the operating table 1. A pair of openings 6 are opened on the top of the operating table 1, and a pair of the openings 6 are located on both sides of one of the rectangular through holes 3. A bending mechanism 7 is provided on the operating table 1.

[0030] The cam 72 is fixedly mounted on the support 74 of the workbench 1 and is secured to the bottom of the workbench 1 with two springs 76 arranged on top of the cam 72. The cam 72 is secured to the bottom of the workbench 1 with two springs 76a and 76b.

[0031] Among them, the bending mechanism 7 also includes a through slot 77 opened on the top of the operating table 1, and a moving block 78 is provided in the through slot 77. The moving block 78 is slidably connected to the through slot 77, and a positioning rod 79 and a screw rod 710 are respectively inserted through the side walls of the moving block 78. The moving block 78 is slidably connected to the positioning rod 79, and the moving block 78 is threadedly connected to the screw rod 710. The two ends of the positioning rod 79 are fixedly connected to the two sides of the inner wall of the through slot 77.

[0032] Among them, a pair of mounting plates 711 are fixedly connected to the bottom of the operating table 1, one end of the screw rod 710 is rotatably connected to one of the mounting plates 711, and the other end of the screw rod 710 horizontally passes through the other mounting plate 711 and is rotatably connected to the mounting plate 711. One end of the screw rod 710 horizontally passes through the mounting plate 711 and is fixedly connected to the first motor 712 through a coupling. The first motor 712 is fixedly connected to the bottom of the operating table 1, and the top of the moving block 78 is fixedly connected to an L-shaped bent straight plate 713.

[0033] It should be noted that the front ends of the bending plate 74 and the L-shaped bending straight plate 713 are both provided with a 45-degree cut angle, so that when the bending plate 74 and the L-shaped bending straight plate 713 cooperate with the bending rod 85 to bend the metal plate 10, the metal plate 10 can smoothly enter the gap formed by the bending plate 74 and the L-shaped bending straight plate 713 and the bending rod 85.

[0034] Among them, an internal support component 8 is provided on one side of the back panel 2, and the internal support component 8 includes four positioning pins 81, and the four positioning pins 81 are fixedly connected to one side of the back panel 2. Four sliding grooves 82 are opened through the side wall of the back panel 2, and connecting rods 83 are inserted into the four sliding grooves 82. The connecting rods 83 are slidably connected to the sliding grooves 82. Rings 84 are sleeved on the four positioning pins 81, and the rings 84 are slidably connected to the positioning pins 81. The rings 84 are fixedly connected to one end of the connecting rod 83.

[0035] Among them, four bending rods 85 are provided on one side of the back panel 2, and a hinge seat 86 is provided on one side of the four bending rods 85. A flat plate 87 is provided on the side of the bending rod 85 facing the adjacent bending rod 85, and the two relatively arranged flat plates 87 are slidably connected by a telescopic groove 88. The telescopic groove 88 is opened at the end of the flat plate 87 away from the bending rod 85, and the thickness is half the thickness of the flat plate 87.

[0036] Among them, the side wall of the back panel 2 is fixedly connected to a second drive motor 89, and the output end of the second drive motor 89 is fixedly connected to a cross-rotating bracket 810. The cross-rotating bracket 810 is rotatably connected to four support arms 811 through an axle pin, and the other ends of the four support arms 811 are rotatably connected to the bending rod body 85 through a hinge seat 86.

[0037] It should be noted that a right-angle groove is provided on the bent rod body 85 near the welding gun 97 to prevent the smoke exhaust pipe from being welded together with the bent rod body 85 when welding the joints.

[0038] Among them, a welding assembly 9 is arranged above the inner support assembly 8, and the welding assembly 9 includes a translation block 91. A pair of track rods 92 are inserted horizontally through the translation block 91. The track rods 92 are slidingly connected to the translation block 91. One end of the track rod 92 is fixedly connected to the back plate 2, and the other end of the track rod 92 is fixedly connected to the iron block 93. A rack 94 is arranged above the translation block 91, and both ends of the rack 94 are fixedly connected to the side walls of the back plate 2 and the side walls of the iron block 93.

[0039] Among them, a pair of support frames 95 are fixedly connected to the bottom of the translation block 91, and a rectangular sleeve 96 is fixedly connected between the pair of support frames 95. A welding gun 97 is inserted through the rectangular sleeve 96, and the welding gun 97 is slidably connected to the rectangular sleeve 96. A limiting block 98 is fixedly connected to the welding gun 97, and a limiting groove 99 adapted to the size of the limiting block 98 is provided on the top of the rectangular sleeve 96. The limiting block 98 is slidably connected to the limiting groove 99. An electric telescopic rod 910 is fixedly connected to the top of the rectangular sleeve 96, and the output end of the electric telescopic rod 910 is fixedly connected to the side wall of the limiting block 98.

[0040] Among them, a mounting platform 911 is fixedly connected between a pair of the support frames 95, and a third drive motor 912 is fixedly connected to the top of the mounting platform 911. The output end of the third drive motor 912 passes through the translation block 91 and extends out of the top of the translation block 91. The output end of the third drive motor 912 is rotatably connected to the translation block 91, and the output end of the third drive motor 912 is fixedly connected to a gear 913, and the gear 913 is engaged with the rack 94.

[0041] Example: Figure 1-6 As shown, in this embodiment, the metal plate 10 cut to size is pushed toward the back plate 2 along the limit bars 5 on both sides, and the metal plate 10 is moved by the transport rollers 4 until the three sides of the metal plate 10 touch all the limit bars 5 on the top of the operating table 1, and the second drive motor 89 fixedly connected to the side wall of the back plate 2 is started to rotate, so that the cross-rotating bracket 810 rotates, thereby causing the support arm 811 to push the four bending rods 85 to move in different directions respectively, and the connecting rod 83 fixedly connected to the four bending rods 85 moves in the slide groove 82, and one end of the connecting rod 83 slides on the positioning pin 81 through the ring 84. When the connecting rod 83 moves to the end of the slide groove 82, the side wall of the connecting rod 83 touches the inner wall of the slide groove 82, and the movement of the four bending rods 85 stops. The flat plate 87 fixedly connected to the side wall of the bending rod 85 extends the length of the flat plate 87 through the telescopic slot 88. At this time, the two bending rods 85 located below, together with the flat plate 87, are in contact with the top of the metal plate 10, and the metal plate 10 is clamped in cooperation with the transport rollers 4.

[0042] It should be noted that the two openings 6 are located on both sides of one of the rectangular through holes 3, and the opening 6 located between the two rectangular through holes 3 is located in the middle position of the metal plate 10. When bent by two bending plates 74, the metal plate 10 is located at one end above the other rectangular through hole 3, and its length is the sum of the length of the folded part of the other end of the metal plate 10 and the length of the undone part of the metal plate 10.

[0043] like Figure 1-3 and Figure 7As shown, the cylinder 76 is started to push the cross bar 75 upward, thereby driving a pair of bending plates 74 fixedly connected to the cross bar 75 to move upward, and the bending plate 74 moves upward along the slide bar 72 through the slider 73, and the front end of the bending plate 74 passes through the opening 6, so that the front end of the bending plate 74 and the 45-degree cut angle touch the metal plate 10, and the bending plate 74 continues to move upward, so that the metal plate 10 is folded along the right-angled edge of the bending rod body 85, thereby forming a 90-degree angle of the metal plate 10, and the bending plate 74 and the flat plate 87 are respectively attached to the two sides of the metal plate 10 to avoid deformation of the metal plate 10 during the bending process. After the top of the slider 73 touches the top of the inner wall of the sliding frame 71, the bending plate 74 stops moving upward.

[0044] like Figure 1 、 3 As shown in FIG7 , the first motor 712 is then started to rotate the screw rod 710 in the through slot 77, so that the moving block 78 on the screw rod 710 moves along the positioning rod 79 toward the inner support assembly 8, thereby driving the L-shaped bent straight plate 713 fixedly connected to the top of the moving block 78 to move. The front end of the L-shaped bent straight plate 713 and the 45-degree cut angle contact the metal plate 10, causing the metal plate 10 to be flipped along the right-angled side of the bending rod body 85, thereby completing the bending. The L-shaped bent straight plate 713 and the flat plate 87 are respectively attached to the two sides of the metal plate 10, and the bending of the metal plate 10 is completed through the cooperation of the bending mechanism 7 and the inner support assembly 8.

[0045] like Figure 1 、 5 As shown in Figures 6 and 7, the third drive motor 912 is started to rotate the gear 913, and the gear 913 cooperates with the rack 94 to drive the translation block 91 to translate on a pair of track rods 92. After moving to the welding seam 11, the electric telescopic rod 910 is started to push the limit block 98 to slide in the limit groove 99, thereby driving the welding gun 97 to slide in the rectangular sleeve 96, and then adjusting the adaptive welding distance between the welding gun 97 and the welding seam 11. The gap of the welding seam 11 is welded by translating the welding gun 97. After the welding is completed, the exhaust pipe is loosened by contracting the bending rod body 85 and resetting the L-shaped bending straight plate 713 and the bending plate 74, so that the completed exhaust pipe can be quickly removed from the operating table 1.

[0046] It should be noted that: Figure 7 As shown, the metal plate 10 is first bent at two right angles of the smoke exhaust duct through the cooperation of the two bending rods 85 at the bottom and the two bending plates 74, and then the third right angle of the smoke exhaust duct is bent through the cooperation of the L-shaped bending straight plate 713 and the bending rod 85 at the upper right, and the two ends of the metal plate 10 meet at the right-angle groove position of the bending rod 85 at the upper left to form a welding seam 11.

[0047] Start the third drive motor 912 to rotate the gear 913. The gear 913 cooperates with the rack 94 to drive the translation block 91 to translate on a pair of track rods 92. After moving to the welding seam 11, the electric telescopic rod 910 is started to push the limit block 98 to slide in the limit groove 99, thereby driving the welding gun 97 to slide in the rectangular sleeve 96, and then adjusting the adaptive welding distance between the welding gun 97 and the welding seam 11. The gap of the welding seam 11 is welded by translating the welding gun 97.

[0048] After welding is completed, the smoke exhaust pipe is released by shrinking the bent rod 85 and resetting the L-shaped bent straight plate 713 and the bent plate 74, so that the smoke exhaust pipe can be quickly removed from the operating table 1.

[0049] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A fire smoke exhaust pipe welding device, comprising an operating table and a back plate located on top of the operating table, a pair of legs fixedly connected to the bottom of the operating table, and a crossbeam fixedly connected between the pair of legs, characterized in that: A pair of rectangular through holes are provided on the top of the operating table, and a plurality of transport rollers are provided in each of the pair of rectangular through holes. The two ends of the transport rollers are rotatably connected to the inner walls of the rectangular through holes. A plurality of limit bars are provided around the transport rollers, and the plurality of limit bars are fixedly connected to the top of the operating table. A pair of openings are provided on the top of the operating table, and the pair of openings are located on both sides of one of the rectangular through holes. A bending mechanism is provided on the operating table; The cam is fixedly provided with two pairs of sliding frames, and the tops of the two pairs of sliding frames are fixedly connected to the bottom of the operating table, and sliding rods are provided in the two pairs of sliding frames, and two ends of the sliding rods are fixedly connected to the top and bottom of the inner wall of the sliding frame respectively. Slide blocks are sleeved on the slide bars, and the slide blocks are slidably connected to the slide bars. A pair of bending plates are provided between the two pairs of sliding frames, and the two pairs of sliding frames are fixedly connected to one of the bending plates through slide blocks respectively, and a pair of bending plates vertically penetrates one of the openings respectively, and a cross bar is fixedly connected between the pair of bending plates, and a cylinder is provided under the cross bar, and the output end of the cylinder is fixedly connected to the bottom end surface of the cross bar, and the bottom of the cylinder is fixedly connected to the top of the cross beam; The bending mechanism also includes a through slot opened on the top of the operating table, a moving block is provided in the through slot, the moving block is slidably connected to the through slot, a positioning rod and a screw rod are respectively inserted through the side walls of the moving block, the moving block is slidably connected to the positioning rod, the moving block is threadedly connected to the screw rod, and both ends of the positioning rod are fixedly connected to both sides of the inner wall of the through slot; A pair of mounting plates are fixedly connected to the bottom of the operating table, one end of the screw rod is rotatably connected to one of the mounting plates, the other end of the screw rod horizontally passes through the other mounting plate and is rotatably connected to the mounting plate, one end of the screw rod horizontally passing through the mounting plate is fixedly connected to the first motor through a coupling, the first motor is fixedly connected to the bottom of the operating table, and the top of the moving block is fixedly connected to an L-shaped bent straight plate; An inner support assembly is provided on one side of the back plate, and the inner support assembly includes four positioning pins, and the four positioning pins are fixedly connected to one side of the back plate. Four sliding grooves are opened through the side wall of the back plate, and connecting rods are inserted into the four sliding grooves. The connecting rods are slidably connected to the sliding grooves. Rings are sleeved on the four positioning pins, and the rings are slidably connected to the positioning pins. The rings are fixedly connected to one end of the connecting rod; Four bending rods are provided on one side of the back plate, and a hinge seat is provided on one side of each of the four bending rods. A flat plate is provided on the side of the bending rod facing the adjacent bending rod, and the two relatively arranged flat plates are slidably connected by a telescopic groove, and a welding assembly is provided above the inner support assembly.

2. The fire-fighting, smoke-proof and exhaust pipe welding equipment according to claim 1, characterized in that: The side wall of the back panel is fixedly connected to a second drive motor, the output end of the second drive motor is fixedly connected to a cross rotating bracket, the cross rotating bracket is rotatably connected to four support arms through an axle pin, and the other ends of the four support arms are rotatably connected to the bending rod body through a hinge seat.

3. The fire-fighting smoke exhaust pipe welding equipment according to claim 1, characterized in that: The welding assembly includes a translation block, a pair of track rods are inserted horizontally through the translation block, the track rods are slidably connected to the translation block, one end of the track rod is fixedly connected to the back plate, and the other end of the track rod is fixedly connected to the iron block. A rack is provided above the translation block, and both ends of the rack are fixedly connected to the side wall of the back plate and the side wall of the iron block.

4. The fire-fighting smoke exhaust pipe welding equipment according to claim 3, characterized in that: A pair of support frames are fixedly connected to the bottom of the translation block, a rectangular sleeve is fixedly connected between the pair of support frames, a welding gun is inserted through the rectangular sleeve, the welding gun is slidably connected to the rectangular sleeve, a limit block is fixedly connected to the welding gun, a limit groove adapted to the size of the limit block is provided on the top of the rectangular sleeve, the limit block is slidably connected to the limit groove, an electric telescopic rod is fixedly connected to the top of the rectangular sleeve, and the output end of the electric telescopic rod is fixedly connected to the side wall of the limit block.

5. The fire-fighting smoke and exhaust pipe welding equipment according to claim 4, characterized in that: A mounting platform is fixedly connected between a pair of support frames, a third drive motor is fixedly connected to the top of the mounting platform, an output end of the third drive motor passes through the translation block and extends out of the top of the translation block, the output end of the third drive motor is rotatably connected to the translation block, and a gear is fixedly connected to the output end of the third drive motor, and the gear is engaged with the rack.

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