A welding device for a fire smoke exhaust pipe

Abstract

The present invention discloses a welding device for a fire-fighting smoke exhaust pipe, belonging to the technical field of pipe welding. The welding device for the fire-fighting smoke exhaust pipe includes a bottom plate. A pair of first sliding rails are fixedly connected to the upper surface of the bottom plate. A pipe fixing frame is slidably connected to the pair of first sliding rails. A pair of fixed bases are fixedly connected to the upper surface of the bottom plate. A pair of fourth hydraulic rods are fixedly connected to one of the fixed bases. The ends of the pair of fourth hydraulic rods away from the fixed base are fixedly connected to the pipe fixing frame. In the present invention, welding operations are performed through a welding mechanism. After welding is completed, the first hydraulic rod drives the first moving seat to move, so that the weld of the pipe moves to the grinding mechanism. The grinding mechanism knocks off the welding flux and grinds the weld with a grinding disc to remove the excess welding slag, welding protrusions, oxides and uneven surfaces generated during the welding process, so as to ensure the quality, appearance and structural performance of the pipe welding joint.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipeline welding, and particularly relates to a welding device for a fire exhaust pipeline. Background Art

[0002] Fire exhaust pipelines are an important part of a building's fire protection system. They are mainly used to discharge smoke, toxic gases, and high-temperature gases generated in the fire area out of the building during a fire, ensuring the safety of evacuation passages, protecting the lives of people, and assisting firefighters in fire extinguishing work. Fire exhaust pipelines are usually made of galvanized steel pipes. During the production process, welding work is required to firmly connect different pipe segments through the welding process to ensure the sealing and stability of the system, and to avoid air leakage or failure of the pipeline due to insecure welding.

[0003] Most of the existing welding operations are carried out by workers holding an electric welding gun. Since the thickness of the galvanized steel pipe is relatively thin, workers need to control the single welding time to avoid the electric welding gun getting too hot and piercing through the steel pipe. At the same time, the welding gun needs to swing during the welding process to improve the welding quality. This requires a high level of welding proficiency from workers. For unskilled workers, the welding operation of fire exhaust pipelines is not only inefficient but also likely to pierce through the pipeline, resulting in a low yield rate. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned disadvantages of the prior art and provide a welding device for a fire exhaust pipeline.

[0005] The technical solution adopted to solve the above technical problem is: A welding device for a fire exhaust pipeline, including a bottom plate. A pair of first sliding rails are fixedly connected to the upper surface of the bottom plate. A pipeline fixing frame is slidably connected to the pair of first sliding rails. A pair of fixed bases are fixedly connected to the upper surface of the bottom plate. A pair of fourth hydraulic rods are fixedly connected to one of the fixed bases. The ends of the pair of fourth hydraulic rods away from the fixed base are fixedly connected to the pipeline fixing frame;

[0006] A welding mechanism is arranged on one of the fixed bases, and a grinding mechanism is arranged on the other fixed base. Conductive rods are fixedly connected to both the welding mechanism and the grinding mechanism. The fixed base includes a first base fixedly connected to the upper surface of the bottom plate. Second fixing plates are fixedly connected to both ends of the first base. Second hydraulic rods are fixedly connected to the second fixing plates. The ends of the second hydraulic rods away from the second fixing plates are fixedly connected to a moving semi-ring. A bracket is fixedly connected to the moving semi-ring. One end of the bracket away from the moving semi-ring is fixedly connected to a semi-toothed ring.

[0007] Through the above technical solution, by using the pipe fixing bracket, the first hydraulic rod is used to push the fixing ring to clamp and fix the pipe. Then, the welding operation is carried out by the welding mechanism. After the welding is completed, the first hydraulic rod drives the first moving seat to move, so that the weld of the pipe moves to the grinding mechanism. The grinding mechanism knocks off the slag and grinds the weld with the grinding disc to remove the excess welding slag, welding protrusions, oxides and uneven surfaces generated during the welding process, so as to ensure the quality, appearance and structural performance of the pipe welding joint.

[0008] Further, the pipe fixing bracket includes a first moving seat slidably connected to the first slide rail. A pair of first fixing plates are fixedly connected to both ends of the first moving seat. A first hydraulic rod is fixedly connected to the first fixing plate. The end of the first hydraulic rod away from the first fixing plate is fixedly connected to a fixing ring, and a buffer anti-slip pad is fixedly connected inside the fixing ring.

[0009] Through the above technical solution, the first hydraulic rod pushes the fixing ring, and the fixing ring moves inward to clamp and fix the pipe. The use of the buffer anti-slip pad avoids the pipe from slipping.

[0010] Further, third fixing plates are fixedly connected to both ends of the first base. A pair of first sliding rods are fixedly connected to the moving half-ring. The first sliding rods penetrate and are slidably connected to the third fixing plates. A first groove is formed on the side of the moving half-ring close to the half-tooth ring. A first conductive ring and a second conductive ring are fixedly connected in the first groove. Second grooves are formed on both sides of the half-tooth ring.

[0011] Through the above technical solution, the welding mechanism and the grinding mechanism can rotate around the pipe, so as to process the pipe in all aspects.

[0012] Further, the conductive rod includes a connecting rod fixedly connected to the welding mechanism. The connecting rod is slidably matched with the first groove. Third springs are fixedly connected to both the upper and lower sides of the connecting rod. Conductive sheets are fixedly connected to the third springs. The conductive sheets are electrically connected to the first conductive ring and the second conductive ring respectively.

[0013] Through the above technical solution, the third spring pushes the conductive sheet against the first conductive ring and the second conductive ring, so as to supply power to the welding mechanism and the grinding mechanism through the conductive rod.

[0014] Furthermore, the welding mechanism includes a second moving seat slidably connected to the semi-toothed ring. A limiting guide rail is fixedly connected inside the second moving seat, and the limiting guide rail and the second groove are slidably engaged with each other. A first motor is fixedly connected to the second moving seat, and an output end of the first motor is fixedly connected to a first gear. The first gear and the semi-toothed ring are meshed and matched with each other. A fixed rod is fixedly connected inside the second moving seat, and a rotating roller is sleeved outside the fixed rod. Both ends of the rotating roller are fixedly connected to second gears, and the second gears and the first gear are meshed and matched with each other. A first sliding groove is formed in the rotating roller.

[0015] Through the above technical solution, the first motor drives the first gear to rotate. The first gear cooperates with the semi-toothed ring, thereby driving the second moving seat to rotate around the pipeline. At this time, the first gear drives the second gear to rotate, the second gear drives the rotating roller to rotate, and the first sliding groove on the rotating roller drives the first slider to reciprocate. The first slider drives the third moving seat to reciprocate along the limiting guide rail through the connecting block, thereby driving the electric welding gun to reciprocate through the elastic fixing frame, and performing the welding operation of rotating and swinging at the same time, so as to more accurately imitate the manual welding operation of workers.

[0016] Furthermore, a pair of second sliding rails are fixedly connected to the upper end of the second moving seat. A third moving seat is slidably connected to the second sliding rails. A connecting block is fixedly connected to the lower end of the third moving seat. A first slider is fixedly connected to the lower end of the connecting block. The first slider and the first sliding groove are slidably engaged with each other. A second sliding rod is slidably connected through the third moving seat. A first spring is sleeved on the second sliding rod. One end of the first spring away from the third moving seat is fixedly connected to the second moving seat. An elastic fixing frame is fixedly connected to the third moving seat. An electric welding gun is fixedly connected inside the elastic fixing frame. A locking bolt is arranged at one end of the elastic fixing frame away from the third moving seat. A fourth fixing plate is fixedly connected to the second moving seat. A second sliding groove is formed in the fourth fixing plate. Second sliders are fixedly connected to both sides of the elastic fixing frame. The second sliders and the second sliding groove are slidably engaged with each other. The elastic fixing frame is fixedly connected to the third moving seat through an elastic metal sheet.

[0017] Through the above technical solution, when the elastic fixing frame reciprocates, the second slider moves in the second sliding groove, causing the second slider to drive the elastic fixing frame to move up and down, so as to prevent the electric welding gun from contacting the pipe wall for too long and causing the pipe wall to be welded through.

[0018] Further, the grinding mechanism includes a fourth moving seat slidably connected to a semi-toothed ring. A second motor is fixedly connected to the fourth moving seat. The output end of the second motor is fixedly connected to a third gear, and the third gear meshes with the semi-toothed ring. A lifting slide bar is slidably connected to the fourth moving seat. The lower end of the lifting slide bar is fixedly connected to a first fixing frame. A second spring is sleeved outside the lifting slide bar. A first roller is rotatably connected to the first fixing frame. A knocking hammer head is fixedly connected to the first fixing frame. A convex block is fixedly connected to the semi-toothed ring, and the first roller and the convex block are in mutual extrusion cooperation.

[0019] Through the above technical solution, the second motor drives the third gear to rotate. The third gear and the semi-toothed ring cooperate to drive the fourth moving seat to rotate around the pipeline. At this time, as the fourth moving seat moves, the first roller moves along the surface of the convex block. At the same time, the second spring pushes the first fixing frame downward, so that the first fixing frame drives the knocking hammer head to continuously hammer the weld, knocking off the welding flux.

[0020] Further, a third hydraulic rod is fixedly connected to the fourth moving seat. The lower end of the third hydraulic rod is fixedly connected to a second fixing frame. A third motor is fixedly connected to the second fixing frame. The output end of the third motor is fixedly connected to a grinding disc. A pair of rotating rods are rotatably connected to the second fixing frame. A rotating block is rotatably connected to the rotating rod. A lead screw is slidably connected through the rotating block. Nuts are threadedly connected through both ends of the lead screw. A second roller is rotatably connected to the end of the rotating rod far from the third motor.

[0021] Through the above technical solution, the third hydraulic rod drives the second fixing frame to move downward. The third motor drives the grinding disc to rotate. The grinding disc grinds the weld. During the process of the second fixing frame moving downward, the second roller closely adheres to the surface of the pipe wall, pushing the rotating rod to open outward until blocked by the nut, so that the descending height of the grinding disc can be controlled to avoid grinding through the pipeline and greatly improving the grinding quality.

[0022] The beneficial effects of the present invention are as follows: (1) By using the pipeline fixing bracket of the present invention, the pipeline is clamped and fixed by the first hydraulic rod pushing the fixing ring, and then the welding operation is carried out by the welding mechanism. After the welding is completed, the first hydraulic rod drives the first moving seat to move, so that the weld of the pipeline moves to the grinding mechanism. The grinding mechanism knocks off the coating and grinds the weld with the grinding disc to remove the excess welding slag, welding protrusions, oxides and uneven surfaces generated during the welding process, so as to ensure the quality, appearance and structural performance of the pipeline welding joint; (2) By using the welding mechanism of the present invention, when welding, the first motor drives the first gear to rotate. The first gear cooperates with the semi-toothed ring to drive the second moving seat to move in a circle. At this time, the first gear drives the second gear to rotate, and the second gear drives the rotating roller to rotate. The rotating roller drives the third moving seat to move back and forth through the cooperation of the first chute and the first slider, so that the electric welding gun moves back and forth while moving around the pipeline. At the same time, the electric welding gun moves up and down through the cooperation of the second chute and the second slider, so as to imitate the operation of workers. On the one hand, it avoids the electric welding gun contacting the pipeline wall for too long and welding through the pipe wall. At the same time, the reciprocating welding gun can improve the welding quality; (3) By using the grinding mechanism of the present invention, when the second motor drives the third gear to rotate, the third gear drives the fourth moving seat to move. At this time, the first roller moves up and down reciprocally under the push of the convex block and the second spring on the lifting slide rod to knock off the coating on the weld. Then, the third hydraulic rod pushes the second fixing bracket downward, so that the third motor drives the grinding disc to rotate to grind the weld. By using the rotating rod and the screw nut, the descending height of the grinding disc can be controlled, so as to improve the grinding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is the first perspective structure diagram of the present invention;

[0024] Figure 2 is the top view structure diagram of the present invention;

[0025] Figure 3 is the second perspective structure diagram of the present invention;

[0026] Figure 4 is the partial explosion structure diagram of the present invention;

[0027] Figure 5 is the three-dimensional structure diagram of the welding mechanism and the grinding mechanism of the present invention;

[0028] Figure 6 is the cross-sectional view of the welding mechanism and the grinding mechanism of the present invention;

[0029] Figure 7 is Figure 6 the enlarged view of part A of

[0030] Figure 8It is a three-dimensional view of the welding mechanism of the present invention;

[0031] Figure 9 It is a cross-sectional view of the welding mechanism of the present invention;

[0032] Figure 10 It is Figure 9 an enlarged view of part B of

[0033] Figure 11 It is an internal structure diagram of the welding mechanism of the present invention;

[0034] Figure 12 It is a structure diagram of the grinding mechanism of the present invention;

[0035] Figure 13 It is a three-dimensional view of the grinding mechanism of the present invention.

[0036] Reference numerals: 1, base plate; 2, first slide rail; 3, pipe fixing bracket; 31, first moving seat; 32, first fixing plate; 33, first hydraulic rod; 34, fixing ring; 35, buffer anti-slip pad; 4, fixing base; 41, first base; 42, second fixing plate; 43, third fixing plate; 44, second hydraulic rod; 45, first slide bar; 46, moving half ring; 47, bracket; 48, semi-toothed ring; 49, first groove; 410, first conductive ring; 411, second conductive ring; 412, second groove; 5, welding mechanism; 51, second moving seat; 52, limit guide rail; 53, first motor; 54, first gear; 55, fixing rod; 56, rotating roller; 57, second gear; 58, first chute; 59, first slider; 510, connecting block; 511, third moving seat; 512, second slide rail; 513, second slide bar; 514, first spring; 515, elastic fixing bracket; 516, second slider; 517, locking bolt; 518, electric welding gun; 519, fourth fixing plate; 520, second chute; 6, grinding mechanism; 61, fourth moving seat; 62, second motor; 63, third gear; 64, lifting slide bar; 65, second spring; 66, first fixing bracket; 67, first roller; 68, knocking hammer head; 69, third hydraulic rod; 610, second fixing bracket; 611, third motor; 612, grinding disc; 613, rotating rod; 614, lead screw; 615, nut; 616, second roller; 617, convex block; 618, rotating block; 7, fourth hydraulic rod; 8, conductive rod; 81, connecting rod; 82, third spring; 83, conductive sheet. Detailed implementation manners

[0037] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] As Figures 1-13 shown, a welding device for a fire smoke exhaust pipe in this embodiment includes a bottom plate 1, a pair of first slide rails 2 fixedly connected to the upper surface of the bottom plate 1. A pair of fourth hydraulic rods 7 are fixedly connected to one of the fixed bases 4. One end of the pair of fourth hydraulic rods 7 away from the fixed base 4 is fixedly connected to a pipe fixing frame 3. The fourth hydraulic rods 7 drive the first moving seat 31 to move, so that the weld moves to the grinding mechanism 6.

[0039] As Figure 4 shown, a pipe fixing frame 3 is slidably connected to a pair of first slide rails 2. The pipe fixing frame 3 includes a first moving seat 31 slidably connected to the first slide rails 2. A pair of first fixing plates 32 are fixedly connected to both ends of the first moving seat 31. A first hydraulic rod 33 is fixedly connected to the first fixing plates 32. One end of the first hydraulic rod 33 away from the first fixing plates 32 is fixedly connected to a fixing ring 34. A buffer anti-slip pad 35 is fixedly connected inside the fixing ring 34. The first hydraulic rod 33 pushes the fixing ring 34, and the fixing ring 34 moves closer inward to clamp and fix the pipe. The use of the buffer anti-slip pad 35 avoids the pipe from slipping.

[0040] As Figures 5-7 shown, a pair of fixed bases 4 are fixedly connected to the upper surface of the bottom plate 1. The fixed base 4 includes a first base 41 fixedly connected to the upper surface of the bottom plate 1. Second fixing plates 42 are fixedly connected to both ends of the first base 41. Second hydraulic rods 44 are fixedly connected to the second fixing plates 42. One end of the second hydraulic rods 44 away from the second fixing plates 42 is fixedly connected to a moving half-ring 46. A bracket 47 is fixedly connected to the moving half-ring 46. One end of the bracket 47 away from the moving half-ring 46 is fixedly connected to a semi-toothed ring 48. The second hydraulic rods 44 push the moving half-ring 46 to move closer inward. The moving half-ring 46 moves along the first slide rod 45, and the moving half-ring 46 and the semi-toothed ring 48 are closed into a ring, and this ring is concentric with the pipe.

[0041] Third fixing plates 43 are fixedly connected to both ends of the first base 41. A pair of first slide rods 45 are fixedly connected to the moving half-ring 46. The first slide rods 45 penetrate and are slidably connected to the third fixing plates 43. A first groove 49 is formed on one side of the moving half-ring 46 close to the semi-toothed ring 48. A first conductive ring 410 and a second conductive ring 411 are fixedly connected inside the first groove 49. Second grooves 412 are formed on both sides of the semi-toothed ring 48. The third spring 82 pushes the conductive sheet 83 to closely adhere to the first conductive ring 410 and the second conductive ring 411, so as to supply power to the welding mechanism 5 and the grinding mechanism 6 through the conductive rod 8.

[0042] As Figure 8 、 Figure 9 and Figure 11As shown, a welding mechanism 5 is provided on a fixed base 4. The welding mechanism 5 includes a second moving seat 51 slidably connected to a semi-toothed ring 48. A limiting guide rail 52 is fixedly connected inside the second moving seat 51, and the limiting guide rail 52 and the second groove 412 are slidably engaged with each other. A first motor 53 is fixedly connected to the second moving seat 51. The output end of the first motor 53 is fixedly connected to a first gear 54, and the first gear 54 and the semi-toothed ring 48 are meshed and cooperated with each other. A fixed rod 55 is fixedly connected inside the second moving seat 51. A rotating roller 56 is sleeved outside the fixed rod 55. Second gears 57 are fixedly connected to both ends of the rotating roller 56, and the second gears 57 and the first gear 54 are meshed and cooperated with each other. A first sliding groove 58 is formed on the rotating roller 56. The first motor 53 drives the first gear 54 to rotate, and the first gear 54 cooperates with the semi-toothed ring 48 to drive the second moving seat 51 to rotate around the pipeline. At this time, the first gear 54 drives the second gear 57 to rotate, the second gear 57 drives the rotating roller 56 to rotate, and the first sliding groove 58 on the rotating roller 56 drives the first slider 59 to reciprocate.

[0043] A pair of second sliding rails 512 are fixedly connected to the upper end of the second moving seat 51. A third moving seat 511 is slidably connected to the second sliding rails 512. A connecting block 510 is fixedly connected to the lower end of the third moving seat 511. A first slider 59 is fixedly connected to the lower end of the connecting block 510, and the first slider 59 and the first sliding groove 58 are slidably engaged with each other. A second sliding rod 513 is slidably connected through the third moving seat 511. A first spring 514 is sleeved on the second sliding rod 513. One end of the first spring 514 away from the third moving seat 511 is fixedly connected to the second moving seat 51. An elastic fixing frame 515 is fixedly connected to the third moving seat 511. A welding torch 518 is fixedly connected inside the elastic fixing frame 515. A locking bolt 517 is provided at one end of the elastic fixing frame 515 away from the third moving seat 511. A fourth fixing plate 519 is fixedly connected to the second moving seat 51. A second sliding groove 520 is formed on the fourth fixing plate 519. Second sliders 516 are fixedly connected to both sides of the elastic fixing frame 515, and the second sliders 516 and the second sliding groove 520 are slidably engaged with each other. The elastic fixing frame 515 is fixedly connected to the third moving seat 511 through an elastic metal sheet. The first slider 59 drives the third moving seat 511 to reciprocate along the limiting guide rail 52 through the connecting block 510, so as to drive the welding torch 518 to reciprocate through the elastic fixing frame 515 to perform a welding operation of rotating and swinging at the same time. At the same time, when the elastic fixing frame 515 reciprocates, the second slider 516 moves in the second sliding groove 520, so that the second slider 516 drives the elastic fixing frame 515 to move up and down, avoiding the welding torch 518 contacting the pipe wall for too long time and causing the pipe wall to be welded through.

[0044] As Figure 12 and Figure 13As shown in the figure, a grinding mechanism 6 is provided on another fixed base 4. The grinding mechanism 6 includes a fourth moving seat 61 slidably connected to a semi-toothed ring 48. A second motor 62 is fixedly connected to the fourth moving seat 61. The output end of the second motor 62 is fixedly connected to a third gear 63. The third gear 63 meshes with the semi-toothed ring 48. A lifting slide bar 64 is slidably connected to the fourth moving seat 61. The lower end of the lifting slide bar 64 is fixedly connected to a first fixing frame 66. A second spring 65 is sleeved outside the lifting slide bar 64. A first roller 67 is rotatably connected to the first fixing frame 66. A knocking hammer head 68 is fixedly connected to the first fixing frame 66. A convex block 617 is fixedly connected to the semi-toothed ring 48. The first roller 67 and the convex block 617 are mutually pressed and matched. The second motor 62 drives the third gear 63 to rotate. The third gear 63 and the semi-toothed ring 48 cooperate to drive the fourth moving seat 61 to rotate around the pipeline. At this time, as the fourth moving seat 61 moves, the first roller 67 moves along the surface of the convex block 617. At the same time, the second spring 65 pushes the first fixing frame 66 downward, so that the first fixing frame 66 drives the knocking hammer head 68 to continuously hammer the weld, knocking off the coating.

[0045] A third hydraulic rod 69 is fixedly connected to the fourth moving seat 61. The lower end of the third hydraulic rod 69 is fixedly connected to a second fixing frame 610. A third motor 611 is fixedly connected to the second fixing frame 610. The output end of the third motor 611 is fixedly connected to a grinding disc 612. A pair of rotating rods 613 are rotatably connected to the second fixing frame 610. A rotating block 618 is rotatably connected to the rotating rod 613. A lead screw 614 is slidably connected through the rotating block 618. Nuts 615 are threadedly connected through both ends of the lead screw 614. A second roller 616 is rotatably connected to the end of the rotating rod 613 away from the third motor 611. The third hydraulic rod 69 drives the second fixing frame 610 to move downward. The third motor 611 drives the grinding disc 612 to rotate. The grinding disc 612 grinds the weld. During the process of the second fixing frame 610 moving downward, the second roller 616 closely adheres to the pipe wall surface, pushing the rotating rod 613 to open outward until it is blocked by the nut 615. Thus, the descending height of the grinding disc 612 can be controlled, avoiding grinding through the pipeline, greatly improving the grinding quality. Only by adjusting the position of the nut 615 can the descending height of the grinding disc 612 be changed.

[0046] As Figure 10 shown in the figure, conductive rods 8 are fixedly connected to both the welding mechanism 5 and the grinding mechanism 6. The conductive rod 8 includes a connecting rod 81 fixedly connected to the welding mechanism 5. The connecting rod 81 is slidably matched with the first groove 49. Third springs 82 are fixedly connected to both the upper and lower sides of the connecting rod 81. Conductive sheets 83 are fixedly connected to the third springs 82. The conductive sheets 83 are electrically connected to the first conductive ring 410 and the second conductive ring 411 respectively. Through the action of the third spring 82, the conductive sheets 83 always closely adhere to the first conductive ring 410 and the second conductive ring 411.

[0047] The working principle of this embodiment is as follows: first, align the two pipes and place them on the pipe fixing frame 3, push the fixing ring 34 through the first hydraulic rod 33, and the fixing ring 34 moves inward to clamp and fix the pipes, and use the buffer anti-skid pad 35 to prevent the pipes from slipping.

[0048] The third spring 82 pushes the conductive sheet 83 to be close to the first conductive ring 410 and the second conductive ring 411, so as to supply power to the welding mechanism 5 and the grinding mechanism 6 through the conductive rod 8. Meanwhile, the second hydraulic rod 44 pushes the moving half ring 46 inward, and the moving half ring 46 moves along the first slide rod 45, closing the moving half ring 46 and the half gear ring 48 into a ring, which is concentrically arranged with the pipeline.

[0049] Start the first motor 53, the first motor 53 drives the first gear 54 to rotate, the first gear 54 cooperates with the half gear ring 48, thereby driving the second movable seat 51 to rotate around the pipe. At this time, the first gear 54 drives the second gear 57 to rotate, the second gear 57 drives the rotating roller 56 to rotate, the first slide groove 58 on the rotating roller 56 drives the first slider 59 to reciprocate, the first slider 59 drives the third movable seat 511 to reciprocate along the limiting guide rail 52 through the connecting block 510, thereby driving the electric welding gun 518 to reciprocate through the elastic fixing frame 515, and performing a welding operation of rotating and swinging at the same time, so as to more accurately imitate the manual welding operation of workers.

[0050] At the same time, when the elastic fixing frame 515 moves back and forth, the second slider 516 moves in the second slide groove 520, so that the second slider 516 drives the elastic fixing frame 515 to move up and down, thereby preventing the electric welding gun 518 from contacting the pipe wall for too long and causing welding through the pipe wall.

[0051] When the welding operation is completed, the fourth hydraulic rod 7 drives the first movable seat 31 to move, so that the weld is moved to the grinding mechanism 6. At this time, the second motor 62 drives the third gear 63 to rotate, and the third gear 63 cooperates with the half gear ring 48 to drive the fourth movable seat 61 to rotate around the pipe. At this time, with the movement of the fourth movable seat 61, the first roller 67 moves along the surface of the protrusion 617. At the same time, the second spring 65 pushes the first fixed frame 66 to move downward, so that the first fixed frame 66 drives the knocking hammer 68 to continuously hammer the weld to knock off the coating.

[0052] Afterwards, the third hydraulic rod 69 drives the second fixed frame 610 to move downward, and the third motor 611 drives the grinding disc 612 to rotate. The grinding disc 612 grinds the weld. During the downward movement of the second fixed frame 610, the second roller 616 is close to the surface of the pipe wall, pushing the rotating rod 613 to open outward until it is blocked by the nut 615, so that the descending height of the grinding disc 612 can be controlled to avoid grinding through the pipe, greatly improving the grinding quality. The descending height of the grinding disc 612 can be changed by only adjusting the position of the nut 615.

[0053] The above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

Claims

1. A fire smoke exhaust pipe welding device, comprising a bottom plate (1), characterized in that: A pair of first slide rails (2) are fixedly connected to the upper surface of the base plate (1), a pipe fixing frame (3) is slidably connected to the pair of first slide rails (2), a pair of fixed bases (4) are fixedly connected to the upper surface of the base plate (1), one of the fixed bases (4) is fixedly connected to a pair of fourth hydraulic rods (7), and one end of the pair of fourth hydraulic rods (7) away from the fixed base (4) is fixedly connected to the pipe fixing frame (3); A welding mechanism (5) is provided on one of the fixed bases (4), and a grinding mechanism (6) is provided on the other fixed base (4); the welding mechanism (5) and the grinding mechanism (6) are both fixedly connected to a conductive rod (8); the fixed base (4) comprises a first base (41) fixedly connected to the upper surface of the bottom plate (1); both ends of the first base (41) are fixedly connected to a second fixed plate (42); the second fixed plate (42) is fixedly connected to a second hydraulic rod (44); an end of the second hydraulic rod (44) away from the second fixed plate (42) is fixedly connected to a movable semi-ring (46); a bracket (47) is fixedly connected to the movable semi-ring (46); and an end of the bracket (47) away from the movable semi-ring (46) is fixedly connected to a semi-gear ring (48); Both ends of the first base (41) are fixedly connected to a third fixed plate (43); a pair of first sliding rods (45) are fixedly connected to the movable semi-ring (46); the first sliding rods (45) penetrate and are slidably connected to the third fixed plate (43); a first groove (49) is provided on a side of the movable semi-ring (46) close to the semi-gear ring (48); a first conductive ring (410) and a second conductive ring (411) are fixedly connected in the first groove (49); and second grooves (412) are provided on both sides of the semi-gear ring (48); The grinding mechanism (6) comprises a fourth movable seat (61) slidably connected to the half gear ring (48), the fourth movable seat (61) is fixedly connected to a second motor (62), the output end of the second motor (62) is fixedly connected to a third gear (63), the third gear (63) and the half gear ring (48) are meshed with each other, the fourth movable seat (61) is slidably connected to a lifting slide rod (64), the lower end of the lifting slide rod (64) is fixedly connected to a first fixed frame (66), the outer sleeve of the lifting slide rod (64) is provided with a second spring (65), the first fixed frame (66) is rotatably connected to a first roller (67), the first fixed frame (66) is fixedly connected to a striking hammer (68), the half gear ring (48) is fixedly connected to a protrusion (617), and the first roller (67) and the protrusion (617) are pressed and matched with each other; The fourth movable seat (61) is fixedly connected to a third hydraulic rod (69), the lower end of the third hydraulic rod (69) is fixedly connected to a second fixed frame (610), the second fixed frame (610) is fixedly connected to a third motor (611), the output end of the third motor (611) is fixedly connected to a grinding disc (612), the second fixed frame (610) is rotatably connected to a pair of rotating rods (613), the rotating rods (613) are rotatably connected to rotating blocks (618), the rotating blocks (618) are slidably connected to a lead screw (614), both ends of the lead screw (614) are threadedly connected to nuts (615), and one end of the rotating rod (613) away from the third motor (611) is rotatably connected to a second roller (616).

2. A fire smoke exhaust pipe welding equipment according to claim 1, characterized in that: The pipe fixing frame (3) comprises a first movable seat (31) slidably connected to a first slide rail (2); a pair of first fixing plates (32) are fixedly connected to both ends of the first movable seat (31); a first hydraulic rod (33) is fixedly connected to the first fixing plate (32); an end of the first hydraulic rod (33) away from the first fixing plate (32) is fixedly connected to a fixing ring (34); and a buffer anti-slip pad (35) is fixedly connected inside the fixing ring (34).

3. A fire smoke exhaust pipe welding equipment according to claim 1, characterized in that: The conductive rod (8) comprises a connecting rod (81) fixedly connected to the welding mechanism (5), the connecting rod (81) slidably cooperates with the first groove (49), the upper and lower sides of the connecting rod (81) are fixedly connected to third springs (82), the third spring (82) is fixedly connected to a conductive sheet (83), and the conductive sheet (83) is electrically connected to the first conductive ring (410) and the second conductive ring (411), respectively.

4. A fire smoke exhaust pipe welding device according to claim 3, characterized in that: The welding mechanism (5) comprises a second movable seat (51) slidably connected to the half gear ring (48); a limiting guide rail (52) is fixedly connected inside the second movable seat (51); the limiting guide rail (52) and the second groove (412) are slidably matched with each other; a first motor (53) is fixedly connected to the second movable seat (51); an output end of the first motor (53) is fixedly connected to a first gear (54); the first gear (54) and the half gear ring (48) are meshed with each other; a fixed rod (55) is fixedly connected inside the second movable seat (51); a rotating roller (56) is provided on an outer sleeve of the fixed rod (55); both ends of the rotating roller (56) are fixedly connected to a second gear (57); the second gear (57) and the first gear (54) are meshed with each other; and a first sliding groove (58) is provided on the rotating roller (56).

5. A fire smoke exhaust pipe welding device according to claim 4, characterized in that: A pair of second slide rails (512) are fixedly connected to the upper end of the second movable seat (51), and a third movable seat (511) is slidably connected to the second slide rails (512). A connecting block (510) is fixedly connected to the lower end of the third movable seat (511), and a first sliding block (59) is fixedly connected to the lower end of the connecting block (510). The first sliding block (59) and the first sliding groove (58) are slidably matched with each other. A second sliding rod (513) is slidably connected through the third movable seat (511), and a first spring (514) is sleeved on the second sliding rod (513). One end of the first spring (514) away from the third movable seat (511) is fixedly connected to the second movable seat (51). The movable seat (511) is fixedly connected to an elastic fixing frame (515), an electric welding gun (518) is fixedly connected inside the elastic fixing frame (515), a locking bolt (517) is provided at one end of the elastic fixing frame (515) away from the third movable seat (511), the second movable seat (51) is fixedly connected to a fourth fixing plate (519), a second sliding groove (520) is provided on the fourth fixing plate (519), both sides of the elastic fixing frame (515) are fixedly connected to second sliding blocks (516), the second sliding blocks (516) and the second sliding grooves (520) are slidably matched with each other, and the elastic fixing frame (515) is fixedly connected to the third movable seat (511) via an elastic metal sheet.

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