Pipe welding device for constructional engineering

Abstract

The invention discloses a pipe welding device for constructional engineering, and relates to the technical field of pipe welding. Comprising a base, a vertical electric sliding rail is installed on the base, an annular electric sliding rail is installed on a sliding block on the vertical electric sliding rail, a mounting base is fixedly connected to a sliding block on the annular electric sliding rail, the mounting base is slidably connected with an extending piece, the extending piece is rotationally connected with a connecting column, and the connecting column is rotationally connected with a swing piece. The swing part is slidably connected with a lengthening rod in a limiting mode, the connecting column is provided with a limiting part, the limiting part is slidably connected with a working part, the working part is fixedly connected with a height-fixing telescopic rod, and the height-fixing telescopic rod is provided with a laser welding head. The swing part and the square pipe form a zither shape, the laser welding head is located on the angular bisector of the to-be-welded square pipe, in this way, the to-be-welded position of the square pipe is welded, the welding quality is guaranteed, and the service life of a building is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of pipe welding, and in particular to a pipe welding device for construction engineering. Background Art

[0002] When constructing the frame of a building, it is usually necessary to weld two or more square tubes together into a small component, and then integrate all the above small components together to form the frame of the building. Therefore, the welding quality is proportional to the firmness and service life of the building. In the existing welding of square tubes, in order to evenly heat the metal on both sides of the welding position and achieve a better fusion effect, it is usually necessary to place the laser welding head on the angular bisector of the two square tubes to be welded during welding to achieve the best welding effect. When workers currently weld square tubes with handheld welding guns, due to the small gap between the two tubes to be welded, it is difficult for workers to keep the welding gun on the angular bisector of the welding position during welding, resulting in poor final welding effect and affecting the service life of the building. Summary of the invention

[0003] The invention provides a pipe welding device for construction engineering, which overcomes the disadvantage that it is difficult to locate the welding gun on the angle bisector of the welding position when welding square pipes, resulting in poor welding effect.

[0004] The technical implementation scheme of the present invention is: a pipe welding device for construction engineering, comprising a base, on which symmetrically distributed upright electric slide rails are installed, a slider on one side of the upright electric slide rail is installed with an annular electric slide rail, and a slider on the other side of the upright electric slide rail is provided with a clamping assembly for clamping pipes, the slider on the annular electric slide rail is fixedly connected with a mounting seat, the mounting seat is limitedly slidably connected with an extension piece, the extension piece is rotatably connected to a position away from the annular electric slide rail, and the connecting column is rotatably connected with a symmetrically distributed swinging The swinging member is limitedly and slidably connected to an extension rod, and the extension rod is rotatably connected to an adjusting block at a position away from the connecting column. The extension rod is fixedly connected to an extrusion plate rotatably connected to the adjacent adjusting block. The connecting column is provided with a limiting member, and the limiting member is fixedly connected to a swing telescopic rod, and the telescopic end of the swing telescopic rod is fixedly connected to the connecting column. The limiting member is rotatably connected to a threaded rotating rod, and the limiting member is limitedly and slidably connected to a working member, and a height-fixing telescopic rod is fixedly connected to the side of the working member away from the connecting column, and a laser welding head is installed at the telescopic end of the height-fixing telescopic rod.

[0005] Furthermore, the threaded rod is provided with symmetrically distributed threads, the adjustment block is threadedly connected to the threaded rod, and the limiter is located between the symmetrically distributed threads on the threaded rod, and the symmetrically distributed extension rod and the threaded rod form an isosceles triangle.

[0006] Furthermore, the mounting seat is fixedly connected with an adjustable telescopic rod, the extending piece is fixedly connected with an extrusion piece, the extrusion piece is extruded and matched with the telescopic end of the adjustable telescopic rod, a tension spring is fixedly connected inside the adjustable telescopic rod, the adjustable telescopic rod and the swing telescopic rod are both connected with the height-fixing telescopic rod through adjacent conduits, and hydraulic oil is stored in the adjustable telescopic rod, the height-fixing telescopic rod, the swing telescopic rod and the adjacent conduits.

[0007] Furthermore, the inner diameter of the swing telescopic rod is equal to the inner diameter of the height-fixing telescopic rod, so as not to change the height of the laser welding head during the process of adjusting the extension rod to extend beyond the adjacent swinging member, and the position of the extrusion member away from the extension member is arc-shaped.

[0008] Furthermore, a side of the extrusion plate away from the connecting column is provided with symmetrically distributed elastic folding pieces, a side of the elastic folding piece away from the adjacent adjusting block is fixedly connected to the adjacent extrusion plate, a side of the symmetrically distributed elastic folding pieces close to the adjacent adjusting block is jointly limited and slidably connected with an extrusion piece, the extrusion piece is slidably connected to the adjacent extrusion plate, a side of the adjusting block close to the adjacent extrusion piece is fixedly connected with a rubber ring, and the rubber ring is extruded and fitted with the adjacent extrusion piece.

[0009] Furthermore, the distance between the symmetrically distributed elastic flaps is greater than the diameter of the rubber ring, and the distance between the symmetrically distributed elastic flaps is less than the length of the extrusion sheet, which is used to determine whether the extrusion plate fits the square tube.

[0010] Furthermore, the clamping assembly includes a main mounting clamp, which is fixedly connected to a slider on an adjacent upright electric slide rail through a bracket, the main mounting clamp is slidably connected to a main movable clamp, the main mounting clamp is rotatably connected to a main fastening rotary rod threadedly connected to the main movable clamp, the main mounting clamp is hingedly connected to a mounting member at a position away from the main movable clamp, the mounting member is slidably connected to an adjusting member, the adjusting member is provided with a secondary mounting clamp, the secondary mounting clamp is slidably connected to a secondary movable clamp at a position away from the mounting member, the secondary mounting clamp is rotatably connected to a secondary fastening rotary rod, the secondary fastening rotary rod is threadedly connected to a fastening ring slidably connected to the secondary movable clamp, and a tension spring is fixedly connected between the fastening ring and the secondary movable clamp.

[0011] Furthermore, it also includes a limiting gear rod, which is fixedly connected to the mounting member, and the limiting gear rod is provided with equidistantly distributed teeth on the side close to the auxiliary movable clamping member, and the upper limit sliding connection of the auxiliary movable clamping member is connected to a limiting wedge block, and a tension spring is fixedly connected between the limiting wedge block and the auxiliary movable clamping member, and the limiting wedge block is squeezed and matched with adjacent teeth on the limiting gear rod, and an extrusion folding rod is fixedly connected to the side of the fastening ring close to the limiting wedge block, and the extrusion folding rod is squeezed and limitedly matched with the limiting wedge block.

[0012] Furthermore, the fastening ring is fixedly connected to a trigger piece slidably connected to the auxiliary mounting clamp, a power hydraulic telescopic rod is fixedly connected to the auxiliary mounting clamp near the fastening ring, the telescopic end of the power hydraulic telescopic rod is squeezed and fitted with the trigger piece, the auxiliary mounting clamp is fixedly connected to an extruded hydraulic telescopic rod near the adjusting piece, the telescopic end of the extruded hydraulic telescopic rod is slidably connected to the adjusting piece, and a spring is fixedly connected therebetween, the adjusting piece is slidably connected to the auxiliary mounting clamp, the power hydraulic telescopic rod is connected to the extruded hydraulic telescopic rod through a conduit, and hydraulic oil is stored in the power hydraulic telescopic rod, the extruded hydraulic telescopic rod and the adjacent conduits.

[0013] Furthermore, there is a distance between the telescopic end of the power hydraulic telescopic rod and the trigger member, which is used to limit the sequence of clamping and squeezing the pipe.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: the present invention forms a kite shape with the square tube through the swinging part and the extension rod, so that the laser welding head is on the angular bisector of the square tube to be welded, and as the laser welding head slides horizontally, the square tube is welded at the welding point to be welded, so that the welding effect of each welding point is consistent, while ensuring the welding quality and extending the service life of the building.

[0015] While adjusting the position of the laser welding head, the hydraulic oil circulates between the swing telescopic rod, the height-fixing telescopic rod and the adjusting telescopic rod, so that the distance between the laser welding head and the welding position remains unchanged, thereby ensuring the subsequent welding quality of the laser welding head on the square pipe.

[0016] By clamping the square tube and applying a force along its centerline, the two square tubes to be welded can always remain in a fitted state, thereby ensuring the subsequent welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the swinging member, the threaded rotating rod and the extrusion member of the present invention; Figure 3It is a three-dimensional structural schematic diagram of the limiter, the threaded rotating rod and the working piece of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the swing member, the extension rod and the adjustment block of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the extension member, the connecting column and the swing member of the present invention; Figure 6 The present invention is attached Figure 5 The enlarged view of point A in the middle; Figure 7 It is a three-dimensional structural schematic diagram of the main installation clamp and the main fastening rotating rod of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the fastening ring, the limiting gear rod and the limiting wedge block of the present invention; Fig. 9 It is a three-dimensional structural schematic diagram of the limiting wedge block, the extrusion folding rod and the trigger member of the present invention; Fig.10 It is a three-dimensional structural schematic diagram of the adjusting member, the auxiliary mounting clamping member and the extruded hydraulic telescopic rod of the present invention.

[0018] The meanings of the reference numerals in the figure are: 1-base, 2-upright electric slide rail, 3-annular electric slide rail, 4-mounting seat, 5-extension member, 6-connecting column, 7-swing member, 8-extension rod, 9-adjustment block, 10-extrusion plate, 11-swing telescopic rod, 12-limiting member, 13-threaded rotary rod, 14-operating member, 15-fixed height telescopic rod, 16-laser welding head, 17-adjustable telescopic rod, 18-extrusion member, 19-elastic folding piece , 20-extrusion sheet, 21-rubber ring, 22-main mounting clamp, 23-main moving clamp, 24-main fastening rotary rod, 25-mounting part, 26-adjusting part, 27-secondary mounting clamp, 28-secondary moving clamp, 29-secondary fastening rotary rod, 30-fastening ring, 31-limiting gear rod, 32-limiting wedge block, 33-extrusion folding rod, 34-trigger part, 35-power hydraulic telescopic rod, 36-extrusion hydraulic telescopic rod. DETAILED DESCRIPTION

[0019] The following will be combined with the attached Figure 1 To Attachment Fig.10 The present invention is described in detail, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] When workers hold a welding torch to weld square pipes, due to the small gap between the two pipes to be welded, it is difficult for the workers to keep the welding torch always on the angle bisector of the welding position during welding, resulting in poor welding effect and affecting the service life of the building.

[0021] Example 1: A pipe welding device for construction engineering, please refer to Figure 1-Figure 5 , including a base 1, on which two upright electric slide rails 2 symmetrically distributed on the left and right are installed by bolts, the slider on the left upright electric slide rail 2 is installed with an annular electric slide rail 3 by bolts, and the slider on the right upright electric slide rail 2 is provided with a clamping assembly for clamping pipes, and the slider on the annular electric slide rail 3 is fixedly connected with a mounting seat 4. Initially, the mounting seat 4 is located on the left part of the annular electric slide rail 3 to facilitate the installation of the square tube (the state in the attached figure is the state before the square tube is fixed and prepared for welding), the right side of the mounting seat 4 is connected to an extension member 5 in a front and rear limiting sliding connection, the front part of the extension member 5 is rotatably connected to a connecting column 6, and the right part of the connecting column 6 is rotatably connected to two swing members 7 symmetrically distributed on the left and right, and an extension rod 8 is connected to the upper and lower limiting sliding connection in the swing member 7, and the lower part of the extension rod 8 is rotatably connected to an adjusting block 9, and the lower part of the extension rod 8 is fixedly connected to an extrusion plate 10, and the extrusion plate 10 is rotatably connected to the adjacent adjusting block 9, and initially the front extrusion plate 10 is connected to the adjacent extension rod The angle between the two extension rods 8 is equal to the angle between the rear extrusion plate 10 and the adjacent extension rod 8, which is used to make the angles between the two extension rods 8 and the adjacent square tubes equal after the extrusion plate 10 is attached to the adjacent square tube. A limit member 12 is provided below the connecting column 6. The left part of the upper oblique side of the limit member 12 is fixedly connected with a swing telescopic rod 11. The telescopic end of the swing telescopic rod 11 is fixedly connected to the left part of the connecting column 6. The right part of the limit member 12 is rotatably connected with a threaded rotating rod 13, and the threaded rotating rod 13 is provided with Two sets of threads are symmetrically distributed front and back, the adjustment block 9 is threadedly connected to the threaded rotating rod 13, and the limit piece 12 is located in the middle of the threaded rotating rod 13. The symmetrically distributed extension rods 8 and the threaded rotating rod 13 form an isosceles triangle, which is used to subsequently make the two extension rods 8 and the two pipes form a kite shape. The left and right limiting sliding connections of the lower oblique side of the limit piece 12 are connected with a working piece 14, and the right part of the lower oblique side of the working piece 14 is fixed with a height-fixing telescopic rod 15, and the telescopic end of the height-fixing telescopic rod 15 is installed with a laser welding head 16.

[0022] Please refer to Figure 3-Figure 5The left side of the mounting seat 4 is fixedly connected with an adjustable telescopic rod 17, and a tension spring is fixedly connected inside the adjustable telescopic rod 17, that is, the telescopic end of the adjustable telescopic rod 17 tends to extend outward, and there is a friction force between the mounting seat 4 and the extension member 5, and the magnitude of the friction force is greater than the tension of the tension spring inside the adjustable telescopic rod 17, which is used to prevent the adjustable telescopic rod 17 from moving by itself under the tension of its own tension spring. The front part of the upper side of the extension member 5 is fixedly connected with an extrusion member 18, which is extruded and matched with the telescopic end of the adjustable telescopic rod 17, and is used to control The telescopic end of the telescopic rod 17 is controlled to extend a distance. The upper part of the telescopic rod 17 and the lower part of the swing telescopic rod 11 are connected to the height-fixing telescopic rod 15 through adjacent conduits. Hydraulic oil is stored in the telescopic rod 17, the height-fixing telescopic rod 15, the swing telescopic rod 11 and the adjacent conduits. The inner diameter of the swing telescopic rod 11 is equal to the inner diameter of the height-fixing telescopic rod 15, which is used for not changing the height of the laser welding head 16 during the process of adjusting the extension rod 8 to extend out of the adjacent swinging member 7. The upper part of the extrusion member 18 is arc-shaped.

[0023] Please refer to Figure 5 and Figure 6 Two elastic folding pieces 19 symmetrically distributed up and down are provided on one side of the extrusion plate 10 away from the connecting column 6. Initially, the bent part of the elastic folding piece 19 protrudes out of the adjacent extrusion plate 10. The right side of the elastic folding piece 19 is fixedly connected to the adjacent extrusion plate 10. The left sides of the two symmetrically distributed elastic folding pieces 19 are jointly connected with an extrusion piece 20 in an upper and lower limit sliding manner. The extrusion piece 20 is connected to the adjacent extrusion plate 10 in a left and right sliding manner. A rubber ring 21 is fixedly connected to the right side of the adjustment block 9. The rubber ring 21 is extruded and matched with the adjacent extrusion piece 20 to fix the angle between the adjustment block 9 and the adjacent extrusion plate 10, and to limit the adjacent adjustment blocks 9. The distance between the two adjacent elastic folding pieces 19 is greater than the diameter of the rubber ring 21, and the distance between the two adjacent elastic folding pieces 19 is less than the length of the extrusion piece 20, which is used to determine whether the extrusion plate 10 fits the square tube.

[0024] Please refer to Figure 7 and Figure 8The clamping assembly includes a main mounting clamping member 22, which is fixed to the slider on the right upright electric slide rail 2 through a bracket, and the rear of the main mounting clamping member 22 is slidably connected to the main movable clamping member 23, and the rear of the main mounting clamping member 22 is rotatably connected to the main fastening rotary rod 24, which is threadedly connected to the main movable clamping member 23, and the front side of the main mounting clamping member 22 is hinged with a mounting member 25, which is inclined forward inward. The rear sliding connection is with an adjusting member 26, the front part of the adjusting member 26 is provided with a sub-mounting clamping member 27, the front part of the sub-mounting clamping member 27 is connected with a sub-movable clamping member 28 for sliding obliquely forward and backward, the right part of the sub-mounting clamping member 27 is rotatably connected with a sub-fastening rotary rod 29, the sub-fastening rotary rod 29 is threadedly connected with a fastening ring 30, the fastening ring 30 is slidably connected with the sub-movable clamping member 28, and a tension spring is fixed between the oblique front side of the fastening ring 30 and the sub-movable clamping member 28.

[0025] When constructing the frame of a building, workers first weld the square tubes (hereinafter referred to as square tubes) required for the frame into a fork shape in pairs, and then combine the welded forks to form an overall frame. When welding the square tubes into a fork shape, workers first place the first square tube between the main installation clamp 22 and the main movable clamp 23, and then rotate the main fastening rotary rod 24. The main fastening rotary rod 24 drives the main movable clamp 23 forward through a thread, so that the distance between the main movable clamp 23 and the main installation clamp 22 is reduced. Finally, the main installation clamp 22 and the main movable clamp 23 are in contact with the front and rear sides of the square tube respectively, and the fixing of the first square tube is completed. After that, the worker fits one end of the second square tube to be welded with the position to be welded on the first square tube, adjusts the distance between the mounting member 25 and the adjusting member 26, so that the second square tube is located between the auxiliary mounting clamp 27 and the auxiliary movable clamp 28, and then rotates the auxiliary fastening rotary rod 29, and the auxiliary fastening rotary rod 29 moves up through the threaded transmission fastening ring 30, and the fastening ring 30 pulls the auxiliary movable clamp 28 to move through the tension spring, and finally the auxiliary movable clamp 28 and the auxiliary mounting clamp 27 are in contact with the side of the second square tube and fix it, and then the worker locks the angle between the main mounting clamp 22 and the mounting member 25, thus completing the clamping of the second square tube.

[0026] After the two square tubes are fixed, the worker will start the annular electric slide rail 3, and the slider on the annular electric slide rail 3 drives the mounting seat 4 and all the parts thereon to rotate counterclockwise. Finally, when the plane formed by the center lines of the two extension rods 8 is parallel to the plane formed by the center lines of the two square tubes (at this time, the mounting seat 4 is not between the two square tubes, as shown in the attached figure), the mounting seat 4 is rotated in a counterclockwise direction. Figure 2), stop the annular electric slide rail 3 and start the upright electric slide rail 2 on the left, the slider on the left side drives the annular electric slide rail 3 to move, and then drives the laser welding head 16 to move, until the vertical distance between the laser welding head 16 and the position to be welded is a fixed value (the fixed value is the optimal distance between the laser welding head 16 and the welding position), then the worker pulls the handle of the work piece 14 to move the work piece 14 toward the position to be welded, the work piece 14 drives the two adjustment blocks 9 to move through the threaded rotating rod 13, the adjustment blocks 9 drive the adjacent extension rods 8 and the adjacent extrusion plates 10 to extend out of the adjacent swinging members 7, so that the angle between the two swinging members 7 is reduced, and at the same time, the two extrusion plates 10 are in contact with the sides of the two square tubes respectively.

[0027] After the extrusion plate 10 contacts the side of the square tube, the worker maintains the trend of the work piece 14 moving in the direction to be welded, and swings the work piece 14 back and forth at the same time. Since the two extrusion plates 10 are not completely in contact with the square tube at this time, the work piece 14 can shake. When the work piece 14 shakes, the work piece 14 drives the extension piece 5 to move forward by swinging toward the telescopic rod 11, the limit piece 12 and the connecting column 6. While swinging the work piece 14, the worker rotates the threaded rotary rod 13 according to the contact position of the two extrusion plates 10 with the square tube. First, the contact positions of the two extrusion plates 10 with the square tube are different (that is, the upper part of the extrusion plate 10 on one side contacts the square tube, and the lower part of the extrusion plate 10 on the other side contacts the square tube). As the work piece 14 swings, the contact positions of the two extrusion plates 10 with the square tube change, until the upper parts of the two extrusion plates 10 are respectively in contact with the corresponding When the adjacent square tubes are in contact or the lower parts of the two extrusion plates 10 are in contact with the adjacent square tubes respectively, stop swinging the working piece 14 and rotate the threaded rotary rod 13. If the lower parts of the two extrusion plates 10 are in contact with the adjacent square tubes respectively, the threaded rotary rod 13 drives the two adjustment blocks 9 to move closer to each other through the thread transmission, and the two adjustment blocks 9 respectively drive the adjacent extension rods 8 and the extrusion plate 10 to move, so that the angle formed by the two swinging pieces 7 is reduced, and at the same time, the acute angle formed by the extrusion plate 10 and the adjacent square tubes is gradually reduced, and finally the extrusion plate 10 is completely fitted with the square tube. At this time, the two swinging pieces 7, the two extension rods 8 and the two square tubes form a kite shape, that is, the laser welding head 16 is located on the angular bisector of the position to be welded of the two square tubes. By forming a kite shape, it is ensured that the laser welding head 16 is always located on the angular bisector of the position to be welded, thereby ensuring the welding quality.

[0028] When one side of the extrusion plate 10 contacts the adjacent square tube (hereinafter, the upper side of the extrusion plate 10 contacts the adjacent square tube first, and then the extrusion plate 10 and the square tube are fitted together as an example), the square tube squeezes the elastic folding piece 19 on the adjacent upper side of the adjacent extrusion plate 10 to deform, and the elastic folding piece 19 pushes the upper part of the adjacent extrusion plate 20 to swing to the left, so that the extrusion plate 20 is tilted. At this time, the extrusion plate 20 is not in contact with the adjacent rubber ring 21. As the worker swings, the extrusion plate 10 gradually fits the adjacent square tube. At this time, the square tube squeezes the elastic folding piece 19 on the lower side of the extrusion plate 10 to deform, and the elastic folding piece 19 on the lower side pushes the adjacent extrusion plate 20 to swing to the left, so that the extrusion plate 20 is tilted. The lower part of the sheet 20 swings to the left, so that the distance between the extrusion sheet 20 and the adjacent rubber ring 21 gradually decreases. Finally, the extrusion sheet 20 contacts the adjacent rubber ring 21 and squeezes the latter to deform, fixing the angle between the extrusion plate 10 and the adjacent adjustment block 9. At this time, the adjustment block 9 cannot swing relative to the extension rod 8, so the worker cannot continue to rotate the threaded rotary rod 13. At this time, the worker feels that the threaded rotary rod 13 cannot continue to rotate, that is, he knows that the two extrusion plates 10 have been fitted with the adjacent square tube sides, so that the worker can know in time that the extrusion plate 10 is fitted with the adjacent square tube, saving the worker's observation time, thereby improving the welding efficiency. In the process of the working piece 14 moving toward the direction close to the welding position, the working piece 14 drives the limiting piece 12 to move downward, and the limiting piece 12 drives the fixed part of the swing telescopic rod 11 to move, and the swing telescopic rod 11 extracts the hydraulic oil in the height-fixing telescopic rod 15 through the adjacent conduit. Since the inner diameter of the height-fixing telescopic rod 15 is equal to that of the swing telescopic rod 11, the telescopic end of the swing telescopic rod 11 remains at a height above the welding position unchanged. In the process of the extension piece 5 moving forward, the extension piece 5 drives the extrusion piece 18 to move, so that the telescopic end of the adjustment telescopic rod 17 slides backward along the arc position of the extrusion piece 18, and the telescopic end of the adjustment telescopic rod 17 protrudes outward under the action of the tension spring inside it, and at the same time When the hydraulic oil in the telescopic rod 17 is squeezed and adjusted, it enters the height-fixing telescopic rod 15 through the adjacent conduit, so that the telescopic end of the height-fixing telescopic rod 15 extends (at this time, the distance between the extension piece 5 and the position to be welded, the distance between the connecting column 6 and the position to be welded, and the distance between the connecting column 6 and the first square tube approximately form a right triangle. As the extension piece 5 moves forward, the upper right-angle side (the distance between the connecting column 6 and the first square tube) increases, so the telescopic end of the height-fixing telescopic rod 15 extends to maintain the distance between the laser welding head 16 and the position to be welded unchanged). In this way, by adjusting the position of the laser welding head 16, the laser welding head 16 always maintains the same distance with the position to be welded, thereby ensuring the welding quality.

[0029] After the two extrusion plates 10 are respectively fitted with the adjacent square tubes, the worker starts the laser welding head 16 and pushes the working piece 14 to the right. The working piece 14 drives the height-fixing telescopic rod 15 and the laser welding head 16 to move right, and the laser welding head 16 is used to weld the other tube. After the upper welding of the other tube to be welded is completed, the worker starts the annular electric slide rail 3. The slider on the annular electric slide rail 3 drives the mounting seat 4 and all parts thereon to rotate 180°, then stops the annular electric slide rail 3 and starts the upright electric slide rail 2 on the left. The slider on the upright electric slide rail 2 on the left drives the laser welding head 16 to move. When the distance between the laser welding head 16 and the lower part of the position to be welded is a fixed value, the upright electric slide rail 2 on the left is stopped, and the above steps are repeated to weld the other tube.

[0030] Example 2: Based on Example 1, please refer to Figure 8 and Fig. 9 , and also includes a limit gear rod 31, which is fixedly connected to the lower part of the right side of the mounting member 25. The left side of the limit gear rod 31 is provided with equidistantly distributed teeth. The auxiliary movable clamping member 28 is connected to a limit wedge block 32 for sliding limit movement on the left and right sides. A tension spring is fixedly connected between the limit wedge block 32 and the auxiliary movable clamping member 28. The limit wedge block 32 is squeezed and matched with adjacent teeth on the limit gear rod 31. Initially, the limit wedge block 32 is located between two adjacent teeth on the limit gear rod 31. An extrusion folding rod 33 is fixedly connected to the right side of the fastening ring 30. The extrusion folding rod 33 is squeezed and limitedly matched with the limit wedge block 32 to prevent the limit wedge block 32 from moving relative to the limit gear rod 31.

[0031] Please refer to Fig. 9 and Fig.10 A trigger member 34 slidably connected to the auxiliary mounting clamp 27 is fixedly connected to the rear side of the fastening ring 30, and a power hydraulic telescopic rod 35 is fixedly connected to the right part of the auxiliary mounting clamp 27. The telescopic end of the power hydraulic telescopic rod 35 is squeezed and matched with the trigger member 34 to push the telescopic end of the power hydraulic telescopic rod 35 to retract. An extrusion hydraulic telescopic rod 36 is fixedly connected to the rear part of the auxiliary mounting clamp 27. The telescopic end of the extrusion hydraulic telescopic rod 36 is slidably connected to the adjusting member 26, and a spring is fixedly connected therebetween. The adjusting member 26 is slidably connected to the auxiliary mounting clamp 27 obliquely forward and backward. The power hydraulic telescopic rod 35 is connected to the extrusion hydraulic telescopic rod 36 through a conduit, and hydraulic oil is stored in the power hydraulic telescopic rod 35, the extrusion hydraulic telescopic rod 36 and the adjacent conduits. There is a distance between the telescopic end of the power hydraulic telescopic rod 35 and the trigger member 34, which is used to limit the sequence of clamping and extruding the pipe.

[0032] When fixing the second square tube, the worker repeats the steps of Example 1, and through the threaded transmission between the secondary fastening rotary rod 29 and the fastening ring 30, the fastening ring 30 is pulled upward by the tension spring to pull the secondary movable clamp 28, and the secondary movable clamp 28 drives the limiting wedge block 32 to move upward, and the limiting wedge block 32 squeezes the adjacent teeth on the limiting gear rod 31, so that the limiting wedge block 32 moves to the left and stretches its adjacent tension spring, and as the secondary movable clamp 28 moves, the secondary movable clamp 28 drives the limiting wedge block 32 to move upward along the limiting gear rod 31. During this process, the tension spring adjacent to the limiting wedge block 32 is reciprocatingly stretched until the secondary movable clamp 28 contacts the square tube, and the secondary movable clamp 28 stops moving. At this time, the limiting wedge block 32 enters the gap between two adjacent teeth on the limiting gear rod 31 under the action of the adjacent tension spring.

[0033] After the secondary movable clamp 28 stops moving, as the fastening ring 30 continues to move upward, the fastening ring 30 stretches its adjacent tension spring, and uses the tension of the tension spring to provide a clamping force for the square tube. While the fastening ring 30 moves upward, the fastening ring 30 drives the extrusion folding rod 33 and the trigger member 34 to move upward together. After the secondary movable clamp 28 stops moving, the secondary movable clamp 28 and the limiting wedge block 32 both stop moving, and the distance between the extrusion folding rod 33 and the limiting wedge block 32 gradually decreases, and eventually the two contact, and the limiting wedge block 32 cannot slide out from the gap between the two adjacent teeth on the limiting tooth rod 31. As the fastening ring 30 continues to move upward, the fastening ring 30 drives the trigger member 34 to move upward, and the distance between the trigger member 34 and the telescopic end of the power hydraulic telescopic rod 35 gradually decreases, and eventually the two contact.

[0034] After the telescopic end of the power hydraulic telescopic rod 35 contacts the trigger member 34, the trigger member 34 squeezes the telescopic end of the power hydraulic telescopic rod 35 under the drive of the fastening ring 30, and squeezes the hydraulic oil in the power hydraulic telescopic rod 35 into the extruded hydraulic telescopic rod 36 through the adjacent conduit, so that the telescopic end of the extruded hydraulic telescopic rod 36 extends and compresses the spring adjacent to the extruded hydraulic telescopic rod 36, and the reaction force of the spring on the extruded hydraulic telescopic rod 36 is parallel to the center line of the second square tube. Under the action of the above-mentioned spring, the extruded hydraulic telescopic rod 36 drives the auxiliary mounting clamp 27 to have a tendency to move in the direction close to the position to be welded, so that force is applied to the steel pipe, so that the two steel pipes are always in a fitted state, to prevent the appearance of gaps between the steel pipes and cause poor welding effect.

[0035] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present application, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of this application.

Claims

1. A pipe welding device for construction engineering, characterized in that: The invention comprises a base (1), on which symmetrically distributed upright electric slide rails (2) are mounted, a slider on one side of the upright electric slide rail (2) is mounted with an annular electric slide rail (3), and a slider on the other side of the upright electric slide rail (2) is provided with a clamping assembly for clamping a pipe, the slider on the annular electric slide rail (3) is fixedly connected with a mounting seat (4), the mounting seat (4) is limitedly slidably connected with an extension member (5), the extension member (5) is rotatably connected with a connecting column (6) at a position away from the annular electric slide rail (3), the connecting column (6) is rotatably connected with symmetrically distributed swing members (7), the swing member (7) is limitedly slidably connected with an extension rod (8), and the extension rod (8) An adjusting block (9) is rotatably connected at a position away from the connecting column (6); the extension rod (8) is fixedly connected to an extrusion plate (10) rotatably connected to the adjacent adjusting block (9); the connecting column (6) is provided with a limiting member (12); the limiting member (12) is fixedly connected to a swing telescopic rod (11); the telescopic end of the swing telescopic rod (11) is fixedly connected to the connecting column (6); the limiting member (12) is rotatably connected to a threaded rotating rod (13); the limiting member (12) is slidably connected to an operating member (14); a height-fixing telescopic rod (15) is fixedly connected to a side of the operating member (14) away from the connecting column (6); and a laser welding head (16) is installed at the telescopic end of the height-fixing telescopic rod (15).

2. A pipe welding device for construction engineering according to claim 1, characterized in that: The threaded rotating rod (13) is provided with symmetrically distributed threads, the adjusting block (9) is threadedly connected to the threaded rotating rod (13), and the limiting member (12) is located between the symmetrically distributed threads on the threaded rotating rod (13), and the symmetrically distributed extension rod (8) and the threaded rotating rod (13) form an isosceles triangle.

3. A pipe welding device for construction engineering according to claim 1, characterized in that: The mounting seat (4) is fixedly connected with an adjustable telescopic rod (17), the extension member (5) is fixedly connected with an extrusion member (18), the extrusion member (18) is extruded and matched with the telescopic end of the adjustable telescopic rod (17), a tension spring is fixedly connected inside the adjustable telescopic rod (17), the adjustable telescopic rod (17) and the swing telescopic rod (11) are both connected to the height-fixing telescopic rod (15) through adjacent conduits, and hydraulic oil is stored in the adjustable telescopic rod (17), the height-fixing telescopic rod (15), the swing telescopic rod (11) and the adjacent conduits.

4. A pipe welding device for construction engineering according to claim 3, characterized in that: The inner diameter of the swing telescopic rod (11) is equal to the inner diameter of the height-fixing telescopic rod (15), and is used to maintain the height of the laser welding head (16) during the process of adjusting the extension rod (8) to extend beyond the adjacent swing member (7), and the position of the extrusion member (18) away from the extension member (5) is arc-shaped.

5. A pipe welding device for construction engineering according to claim 1, characterized in that: A side of the extrusion plate (10) away from the connecting column (6) is provided with symmetrically distributed elastic folding sheets (19), a side of the elastic folding sheets (19) away from the adjacent adjustment block (9) is fixedly connected to the adjacent extrusion plate (10), a side of the symmetrically distributed elastic folding sheets (19) close to the adjacent adjustment block (9) is jointly limitedly slidably connected with an extrusion sheet (20), the extrusion sheet (20) is slidably connected to the adjacent extrusion plate (10), and a side of the adjustment block (9) close to the adjacent extrusion sheet (20) is fixedly connected with a rubber ring (21), the rubber ring (21) is extrusion-matched with the adjacent extrusion sheet (20).

6. A pipe welding device for construction engineering according to claim 5, characterized in that: The distance between the symmetrically distributed elastic folds (19) is greater than the diameter of the rubber ring (21), and the distance between the symmetrically distributed elastic folds (19) is less than the length of the extrusion sheet (20), which is used to determine whether the extrusion plate (10) fits the square tube.

7. A pipe welding device for construction engineering according to claim 1, characterized in that: The clamping assembly comprises a main mounting clamping member (22), the main mounting clamping member (22) being fixedly connected to a slider on an adjacent upright electric slide rail (2) via a bracket, the main mounting clamping member (22) being slidably connected to a main movable clamping member (23), the main mounting clamping member (22) being rotatably connected to a main fastening rotating rod (24) threadedly connected to the main movable clamping member (23), the main mounting clamping member (22) being hingedly connected to a mounting member (25) at a position away from the main movable clamping member (23), the mounting member (25) being ) is slidably connected to an adjusting member (26), the adjusting member (26) is provided with an auxiliary mounting clamp (27), the auxiliary mounting clamp (27) is slidably connected to a secondary movable clamp (28) at a position away from the mounting member (25), the auxiliary mounting clamp (27) is rotatably connected to a secondary fastening rotary rod (29), the secondary fastening rotary rod (29) is threadedly connected to a fastening ring (30) slidably connected to the secondary movable clamp (28), and a tension spring is fixedly connected between the fastening ring (30) and the auxiliary movable clamp (28).

8. A pipe welding device for construction engineering according to claim 7, characterized in that: The invention also comprises a limit gear rod (31), wherein the limit gear rod (31) is fixedly connected to the mounting member (25), and the limit gear rod (31) is provided with teeth distributed at equal intervals on a side close to the auxiliary movable clamp (28); the auxiliary movable clamp (28) is connected to a limit wedge block (32) in a sliding manner in the upper limit position; a tension spring is fixedly connected between the limit wedge block (32) and the auxiliary movable clamp (28); the limit wedge block (32) is squeezed and matched with adjacent teeth on the limit gear rod (31); the fastening ring (30) is fixedly connected with an extrusion folding rod (33) on a side close to the limit wedge block (32); the extrusion folding rod (33) is squeezed and limit-matched with the limit wedge block (32).

9. A pipe welding device for construction engineering according to claim 8, characterized in that: The fastening ring (30) is fixedly connected with a trigger member (34) which is slidably connected to the auxiliary mounting clamp (27); a power hydraulic telescopic rod (35) is fixedly connected to the auxiliary mounting clamp (27) at a position close to the fastening ring (30); a telescopic end of the power hydraulic telescopic rod (35) is extruded and matched with the trigger member (34); an extrusion hydraulic telescopic rod (36) is fixedly connected to the auxiliary mounting clamp (27) at a position close to the adjusting member (26); a telescopic end of the extrusion hydraulic telescopic rod (36) is slidably connected to the adjusting member (26), and a spring is fixedly connected therebetween; the adjusting member (26) is slidably connected to the auxiliary mounting clamp (27); the power hydraulic telescopic rod (35) is connected to the extrusion hydraulic telescopic rod (36) via a conduit; and hydraulic oil is stored in the power hydraulic telescopic rod (35), the extrusion hydraulic telescopic rod (36) and adjacent conduits.

10. A pipe welding device for construction engineering according to claim 9, characterized in that: There is a distance between the telescopic end of the power hydraulic telescopic rod (35) and the trigger member (34), which is used to limit the sequence of clamping and squeezing the pipe.

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