Self-fixing type welding equipment for constructional engineering

Abstract

The invention relates to the technical field of building welding, in particular to self-fixing type welding equipment for building engineering. Comprising a frame body, the frame body is in sliding connection with moving plates arranged in a mirror image mode, the moving plates are in sliding connection with moving parts, the moving parts are provided with first air bags, the frame body is fixedly connected with a middle ring, the side, away from the frame body, of the interior of the middle ring is fixedly connected with a fixing frame, and the frame body is in sliding connection with evenly-arranged supporting plates; a first elastic element is fixedly connected between the supporting plate and the frame body, the fixing frame is provided with an installation shell, the installation shell is provided with a welding module, the middle ring is rotationally connected with a rotating ring arranged in a mirror image mode, and a second air bag is arranged in the rotating ring. The expanded first air bag and the expanded second air bag are tightly attached to the pipeline, a closed welding environment is provided for a welding area, continuous air leakage and inert gas waste of a conventional welding environment communicating with the outside are avoided, and therefore the welding cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of construction welding, and in particular to a self-fixing welding device used in construction engineering. Background Art

[0002] During the construction of a building project, a pipeline consisting of multiple pipe sections is usually required. In order to connect these pipe sections, welding is used. Due to the different use environments of the pipelines, the specific welding methods for the pipelines are different. For example, in order to ensure the stability of the pipeline when used in harsh environments, a gas-shielded welding method is used. This type of welding method prevents the pipeline surface from reacting with external oxides during the welding process, thereby improving the quality of the weld.

[0003] The existing means of providing a protective environment for the welding area is usually for workers to use tape to seal the end of the pipe, and continuously inject argon into the pipe to be welded, and then punch holes in the tape to ensure the stability of the welding area. This will cause an abnormal waste of argon during the welding process. At the same time, this type of welding method can only over-fill argon to ensure the stability of the welding area, which further increases the waste of argon. Therefore, there is an urgent need for a self-fixing welding equipment for construction projects to solve the above problems. Summary of the invention

[0004] In order to overcome the disadvantage of the existing welding technology that the protective gas continues to leak out when the welding is sealed with tape and connected to the outside, resulting in high welding costs, the present invention provides a self-fixing welding equipment for construction engineering.

[0005] The technical solution is as follows: A self-fixing welding equipment for construction engineering, comprising a frame, the frame is slidably connected to a moving plate arranged in a mirror image, the moving plate is slidably connected to a moving part, the moving part is provided with a first air bag, the frame is fixed with an intermediate ring, a fixed frame is fixed on the side of the intermediate ring away from the frame, the frame is slidably connected to a uniformly arranged support plate, a first elastic element is fixed between the support plate and the frame, the fixed frame is provided with a mounting shell, a welding module is installed on the mounting shell, the intermediate ring is rotatably connected to a rotating ring arranged in a mirror image, a second air bag is provided in the rotating ring, a solenoid valve is installed on the side of the intermediate ring away from the frame, the frame is installed with a gas tank and a pump body, the gas tank and the intermediate ring are connected to the pump body through an intermediate pipe, and a clamping mechanism for centering the pipeline is provided on the side of the frame close to the moving plate arranged in the mirror image.

[0006] Preferably, the clamping mechanism includes support members arranged in a mirror image and in an annular array, the support members arranged in a mirror image and in an annular array are respectively slidably connected to adjacent moving members, a second elastic element is fixedly connected between the support member and the adjacent moving member, the opposite sides of the mirror image arranged moving plates are slidably connected with evenly arranged guide rods, a third elastic element is fixedly connected between the guide rods and the adjacent moving plates, a U-shaped plate is commonly fixedly connected to the evenly arranged guide rods on the same moving plate, a cavity is provided in the rotating ring, the cavity is communicated with the adjacent second airbag, the support member is rotatably connected with a fixing ring, the fixing ring is connected to the frame The first airbag is fixedly connected with the cavity on the adjacent rotating ring by a connecting pipe, the connecting pipe is fixedly connected to the adjacent fixed ring, a first limiting member is fixedly connected to the side of the movable member close to the intermediate ring, and the first limiting members on different movable members are limitedly matched, a first motor is installed on the frame, a transmission gear is fixedly connected to the output shaft of the first motor, a rack symmetrically arranged on the side of the frame close to the transmission gear is slidably connected, the rack is meshed with the transmission gear, the rack is fixedly connected to the adjacent movable plate, and a transmission component for providing a welding environment for the pipeline is arranged on the side of the movable plate away from the frame.

[0007] Preferably, elastic plates are provided at the back ends of the supporting members in the annular array on the same movable member for fitting against the inner wall of the pipe.

[0008] Preferably, the first limiting member is in the shape of a boss, and is used to enable the moving members arranged in a mirror image to rotate synchronously.

[0009] Preferably, the transmission assembly includes a first extrusion member, which is rotatably connected to the adjacent moving plate, and the first extrusion member is slidably connected to the adjacent moving member. The moving member is rotatably connected to a connecting ring on the side away from the adjacent first limiting member, and a fourth elastic element is fixedly connected between the connecting ring and the adjacent moving plate. The moving member is provided with a first cavity and a second cavity, and the first cavity and the second cavity are both filled with a transmission medium. The first extrusion member slides in the adjacent first cavity, and a second extrusion member is slidably connected to the first cavity and the second cavity, and a fifth elastic element is fixedly connected between the second extrusion member and the adjacent moving member.

[0010] Preferably, the elastic coefficient of the fifth elastic element is greater than the sum of the elastic coefficients of the adjacent and annular second elastic elements, so as to enable the support member to support the pipeline in advance.

[0011] Preferably, the frame is installed with a second motor, the frame is rotatably connected to the first rotating shaft, the output shaft of the second motor is fixedly connected to the second rotating shaft, the second rotating shaft is rotatably connected to the frame, the frame is rotatably connected to the third rotating shaft, the first rotating shaft, the second rotating shaft and the third rotating shaft are connected by a bevel gear set, and the rotating ring and the third rotating shaft are connected by a spur gear set.

[0012] Preferably, the fixing frame is slidably connected with a second limit piece on a side close to the middle ring, the second limit piece is provided with a limit groove, the mounting shell is rotatably connected to the fixing frame, the second limit piece is fixedly connected with a third limit piece arranged in a mirror image on a side close to the mounting shell, the third limit piece is provided with a first through hole, the middle ring is rotatably connected with a rotating rod on a side away from the frame body, the rotating rod and the first rotating shaft are connected through a pulley and belt transmission, a limiting protrusion is provided at an eccentric position of the rotating rod close to the second limit piece, the limiting protrusion is limitedly matched with the limiting groove on the second limit piece, the first through hole arranged in a mirror image slidably cooperates with the limiting rod together, the mounting shell is provided with a second through hole on a side close to the middle ring, the second through hole is limitedly slidably matched with the limiting rod.

[0013] Preferably, the fixed frame is slidably connected to the movable frame, and the fixed frame is rotatably connected to a centrally symmetrically arranged deflection member on one side close to the mounting shell, the limiting rod and the deflection member are both limitedly matched with the movable frame, and a sixth elastic element is fixedly connected between the deflection member and the fixed frame.

[0014] Preferably, a rotation center of the mounting shell on the fixing frame is located at a side away from the rotating rod, so as to cause the mounting shell to deflect.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects: the present invention provides a closed welding environment for the welding area by closely fitting the inflated first airbag and the inflated second airbag with the pipeline, thereby avoiding continuous leakage of the conventional welding environment connected to the outside world and wasting inert gas, thereby reducing the welding cost; the pipeline is supported and centered by using adjacent and annular array support members, thereby ensuring the stability of the position of the pipeline during the welding process, thereby improving the welding effect of the pipeline; the limiting protrusion on the rotating rod is used to squeeze the limiting groove on the second limiting member, so that the welding module is repeatedly deflected, thereby uniformly welding the groove area on the pipeline, preventing the welding module from having unchanged welding points on the pipeline, resulting in a small welding area and incomplete welding, thereby reducing the welding effect of the pipeline; the deflected deflection member is used to squeeze the moving frame to change the deflection angle of the welding module, thereby adapting to grooves of different angles, thereby performing the same degree of welding on pipelines with grooves of different angles, thereby ensuring the welding quality of the pipeline while improving the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural cross-sectional view of the movable plate of the present invention; Figure 3 It is a three-dimensional structural cross-sectional view of the rotating ring and the intermediate ring of the present invention when they rotate relative to each other; Figure 4 It is a three-dimensional structural cross-sectional view of the movable plate and parts thereon of the present invention; Figure 5 is a schematic diagram of the three-dimensional structure of the second airbag of the present invention when it is inflated; Figure 6 For the present invention Figure 5 A magnified view of the three-dimensional structure at center A; Figure 7 It is a schematic diagram of the three-dimensional structure of the fixing frame of the present invention; Figure 8 It is a three-dimensional structural exploded view of the fixing frame and the parts thereon of the present invention.

[0017] The markings of the components in the accompanying drawings are as follows: 101-pipeline, 1-frame, 2-moving plate, 301-moving member, 302-first airbag, 4-intermediate ring, 5-fixed frame, 6-support plate, 7-first elastic element, 8-mounting shell, 9-welding module, 1001-rotating ring, 1002-second airbag, 1003-solenoid valve, 1004-gas tank, 1005-pump body, 1101-support member, 1102-second elastic element, 1103-guide rod, 1104-third elastic element, 1105-U-shaped plate, 1106-connecting pipe, 1107-first limit member, 1108-first motor, 1109-transmission gear, 1110-rack, 1201-first extrusion member, 1202-fourth elastic element, 1203-first cavity, 1204-second cavity, 1205-second extrusion member, 1206-fifth elastic element, 1301-second limiting member, 1302-third limiting member, 1303-first through hole, 1304-rotating rod, 1305-limiting rod, 1306-second through hole, 1401-second motor, 1402-first rotating shaft, 1403-second rotating shaft, 1404-third rotating shaft, 1501-movable frame, 1502-deflecting member, 1503-sixth elastic element. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0019] The existing means of providing a protective environment for the welding area is usually for workers to use tape to seal the end of the pipe, continuously inject argon into the pipe to be welded, and then punch holes in the tape to ensure the stability of the welding area. This will cause an abnormal waste of argon during the welding process.

[0020] Embodiment 1: A self-fixing welding device for construction engineering, such as Figure 1-Figure 7 As shown, it includes a frame 1, and two movable plates 2 arranged in left and right mirror images are slidably connected on the upper side of the frame 1, and movable members 301 are slidably connected to the upper parts of the opposite sides of the two movable plates 2, and first air bags 302 are arranged on the opposite sides of the two movable members 301. An intermediate ring 4 is fixedly connected to the middle part of the upper side of the frame 1, and a fixed frame 5 is fixedly connected to the upper side of the intermediate ring 4. Four uniformly arranged support plates 6 are slidably connected to the upper side of the frame 1, and the support plates 6 are used to support the pipeline 101. A first elastic element 7 is fixedly connected between the support plate 6 and the frame 1, and the first elastic element 7 is a spring for resetting the adjacent support plates 6. A mounting shell 8 is arranged at the lower part of the fixed frame 5, and a welding module 9 is installed on the mounting shell 8. The intermediate ring 4 is rotatably connected to the frame 1. It is connected to two rotating rings 1001 arranged in a left and right mirror image, and a second airbag 1002 is arranged in the rotating ring 1001. The first airbag 302 and the second airbag 1002 are expanded and tightly fitted with the pipe 101 to provide a closed environment for the welding area, thereby preventing the waste of protective gas in the subsequent welding process. A solenoid valve 1003 is installed on the upper side of the middle ring 4, and a gas tank 1004 and a pump body 1005 are installed at the rear of the upper side of the frame 1. The gas tank 1004 is filled with argon gas for providing argon gas to the welding area and protecting the welding area. The gas tank 1004 and the middle ring 4 are connected to the pump body 1005 through an intermediate tube, and a clamping mechanism for centering the pipe 101 is provided on the upper side of the frame 1.

[0021] like Figure 1 and Figure 2-Figure 4As shown, the clamping mechanism includes two groups of support members 1101 arranged in left and right mirror images, each group includes four support members 1101 in a circular array, and the eight support members 1101 are respectively slidably connected to adjacent moving members 301. The back ends of the four support members 1101 on the same moving member 301 are all provided with elastic plates for fitting the inner wall of the pipe 101, so as to improve the supporting and fixing effect of the pipe 101, improve the stability of the pipe 101 during the welding process, and further improve the welding effect of the pipe 101. The support member 1101 and the adjacent moving member 301 are connected to each other in a sliding manner. 01 is fixedly connected with a second elastic element 1102, the second elastic element 1102 is a spring, and is used to reset the adjacent support member 1101, the opposite sides of the two moving plates 2 are slidably connected with four uniformly arranged guide rods 1103, a third elastic element 1104 is fixedly connected between the guide rod 1103 and the adjacent moving plate 2, the third elastic element 1104 is a spring, and is used to reset the adjacent guide rod 1103, the four guide rods 1103 on the same moving plate 2 are fixedly connected with a U-shaped plate 1105, a cavity is provided in the rotating ring 1001, The cavity is connected to the adjacent second airbag 1002, and the outer side of the support member 1101 is rotatably connected to a fixed ring fixed to the frame 1. The first airbag 302 and the cavity on the adjacent rotating ring 1001 are connected by a connecting pipe 1106 fixed to the adjacent fixed ring. The connecting pipe 1106 is made of soft rubber. The opposite sides of the two moving members 301 are fixed with first limiting members 1107. The first limiting members 1107 are boss-shaped and fit together. The two first limiting members 1107 are limited and matched. After the two first limiting members 1107 are in a matched state, The two moving parts 301 are mutually restricted in the rotation direction so that the two moving parts 301 rotate synchronously (the two pipes 101 rotate synchronously and remain relatively still). A first motor 1108 is installed in the middle of the upper side of the frame 1. The output shaft of the first motor 1108 is fixedly connected to a transmission gear 1109. The upper side of the frame 1 is slidably connected to two racks 1110 arranged symmetrically on the left and right sides. The racks 1110 are meshed with the transmission gear 1109. The racks 1110 are fixedly connected to the adjacent moving plate 2. A transmission component for providing a welding environment for the pipe 101 is provided on the upper side of the moving plate 2.

[0022] like Figure 3 and Figure 4As shown, the transmission assembly includes a first extrusion member 1201 that is slidably connected to an adjacent moving member 301, the first extrusion member 1201 is rotatably connected to the upper side of the adjacent moving plate 2, the back sides of the two moving members 301 are rotatably connected with a connecting ring, a fourth elastic element 1202 is fixedly connected between the connecting ring and the adjacent moving plate 2, the fourth elastic element 1202 is a spring, and is used to reset the moving member 301, the moving member 301 is provided with a first cavity 1203 and a second cavity 1204, the first cavity 1203 and the second cavity 1204 are both filled with transmission medium, the first cavity 1203 is filled with hydraulic oil, and the second cavity 1204 is filled with nitrogen, the first extrusion member 1201 is sealed and slidable in the adjacent first cavity 1203, and the first cavity 1203 and A second extrusion member 1205 is sealed and slidably connected in the second cavity 1204, and a fifth elastic element 1206 is fixedly connected between the second extrusion member 1205 and the adjacent movable member 301. The fifth elastic element 1206 is a spring, which is used to reset the second extrusion member 1205. The elastic coefficient of the fifth elastic element 1206 is greater than the sum of the elastic coefficients of the adjacent and second elastic elements 1102, and is used to enable the support member 1101 to support the pipe 101 in advance to prevent the first airbag 302 from contacting the pipe 101 in the centering process. In this way, a part of the first airbag 302 will be blocked by the pipe 101, thereby failing to expand synchronously in various places, resulting in uneven contact force between the first airbag 302 and the pipe 101, which poses a hidden danger for subsequent environmental protection.

[0023] like Figure 2 and Figure 5 As shown, a second motor 1401 is installed on the front side of the frame body 1, and the front side of the frame body 1 is rotatably connected to the first rotating shaft 1402. The output shaft of the second motor 1401 is fixedly connected to the second rotating shaft 1403 rotatably connected to the frame body 1. The front side of the upper part of the frame body 1 is rotatably connected to the third rotating shaft 1404. The first rotating shaft 1402, the second rotating shaft 1403 and the third rotating shaft 1404 are connected by a bevel gear set, and the rotating ring 1001 and the third rotating shaft 1404 are connected by a spur gear set.

[0024] When the device is needed to weld two pipes 101, the staff first places the two pipes 101 on the support plates 6 on the left and right sides respectively, and then the pipes 101 press the two adjacent support plates 6 downward, and the support plates 6 begin to move downward and slide relative to the frame 1, and the adjacent first elastic elements 7 are compressed. After the pipes 101 are stable, the staff starts the first motor 1108, and the output shaft of the first motor 1108 drives the transmission gear 1109 to start rotating clockwise (in the top view), and the transmission gear 1109 drives the two racks 1110 to start moving in opposite directions, and the racks 1110 drive the adjacent moving plates 2 to move together The movable plate 2 and the frame 1 slide relative to each other, and the movable plate 2 drives the adjacent first extrusion member 1201 to move to the right together (for ease of understanding, the movement of the left movable plate 2 and the parts thereon is taken as an example), the movable plate 2 drives the adjacent movable member 301 and the parts thereon to move to the right together through the adjacent fourth elastic element 1202, and the movable plate 2 drives the adjacent guide rod 1103 and the parts thereon to move to the right together through the adjacent third elastic element 1104. After the U-shaped plate 1105 moves to the right until it contacts the adjacent pipe 101, the U-shaped plate 1105 pushes the adjacent pipe 101 to the right, and at this time the two pipes 101 move toward each other.

[0025] After the two pipes 101 move toward each other until their opposite sides contact, as the two moving plates 2 continue to move toward each other, the moving plates 2 and the adjacent guide rods 1103 slide relative to each other, the adjacent third elastic elements 1104 are compressed, and the two moving parts 301 continue to move toward each other. During the process, the moving parts 301 drive the adjacent first limiting parts 1107 to move together. When the two first limiting parts 1107 move toward each other until they contact each other and are in a state of matching with the limiting parts, as the two moving plates 2 continue to move toward each other, the first extrusion part 1201 and the adjacent moving part 301 slide relative to each other, the adjacent fourth elastic element 1202 is compressed, and the first extrusion part 1201 is in the adjacent first cavity 1 203 slides rightward and squeezes the hydraulic oil in the adjacent area (taking the movement of the parts on the left movable plate 2 as an example), the four support members 1101 on the left side are squeezed and start to move backwards, and the support member 1101 and the adjacent movable member 301 slide relative to each other. After the support member 1101 contacts the adjacent pipe 101, the pipe 101 starts to move upward under the action of the adjacent support member 1101. During the process, the four adjacent support members 1101 gradually contact the adjacent pipe 101 and complete the support, so as to clamp and fix the pipe 101 and center it, thereby ensuring the stability of the position of the pipe 101 in the subsequent welding process, thereby improving the welding effect of the pipe 101.

[0026] After the four adjacent support members 1101 are in contact with the adjacent pipe 101, as the first extrusion member 1201 continues to move to the right, the first extrusion member 1201 continues to squeeze the hydraulic oil in the adjacent first cavity 1203. Since the four adjacent support members 1101 can no longer move, the squeezed hydraulic oil completely applies pressure to the adjacent second extrusion member 1205, and the second extrusion member 1205 begins to move to the right. The second extrusion member 1205 slides relative to the adjacent moving member 301, and the adjacent fifth elastic element 1206 is compressed. In the process, the second extrusion member 120 The nitrogen in the adjacent second cavity 1204 is squeezed, and the squeezed nitrogen enters the first airbag 302. The nitrogen in the first airbag 302 enters the cavity on the adjacent rotating ring 1001 through the adjacent connecting pipe 1106, and then enters the adjacent second airbag 1002. The first airbag 302 and the second airbag 1002 begin to expand under the action of the nitrogen, and gradually contact the adjacent pipeline 101, so as to isolate the area where the subsequent welding work is carried out, prevent the outside air from entering the welding area, thereby affecting the welding process and reducing the welding quality of the pipeline 101.

[0027] After completing the isolation of the welding area of ​​the pipeline 101 (the area between the two inflated first airbags 302, the two inflated second airbags 1002, the two rotating rings 1001 and the middle ring 4 is the isolation area), the staff turns off the first motor 1108 and opens the solenoid valve 1003 and the pump body 1005. The pump body 1005 fills the argon gas in the gas tank 1004 into the isolation area in the middle ring 4. Since the density of argon gas is greater than the density of air, the argon gas gradually fills the welding area from bottom to top during the process of the argon gas entering the welding area. The air above the welding area is discharged through the solenoid valve 1003. After the argon gas fills the welding area, the staff turns off the solenoid valve 1003 and the pump body 1005 and starts the second motor. 1401 and the welding module 9 provide an inert environment for welding, and avoid the waste of argon gas when providing an inert environment conventionally, thereby saving welding costs. The output shaft of the second motor 1401 drives the second rotating shaft 1403 to start rotating clockwise (looking down), and the second rotating shaft 1403 drives the first rotating shaft 1402 to rotate counterclockwise (looking down) and drives the third rotating shaft 1404 to rotate clockwise (looking left) through the bevel gear set. The third rotating shaft 1404 drives the two rotating rings 1001 to rotate counterclockwise through the spur gear set. The rotating ring 1001 drives the adjacent pipe 101 to rotate counterclockwise together through the adjacent second airbag 1002, and the welding module 9 welds the adjacent areas of the two pipes 101.

[0028] After the welding of the pipe 101 is completed, the staff turns off the second motor 1401 and the welding module 9 and starts the first motor 1108. The output shaft of the first motor 1108 starts to reverse, and the two racks 1110 respectively drive the parts thereon to start moving in opposite directions. The two moving plates 2 gradually lose the squeezing of the adjacent fourth elastic elements 1202, and the two fourth elastic elements 1202 gradually return to their original state. During the process, the first extrusion member 1201 and the adjacent moving member 301 slide relative to each other, and the moving member 301 gradually loses the squeezing of the hydraulic oil in the adjacent first cavity 1203. Then the second extrusion member 1201 is in a state of being pressed back. 05 When the adjacent fifth elastic element 1206 is gradually reset, the second extrusion component 1205 begins to extract nitrogen from the adjacent first airbag 302. At the same time, the nitrogen in the second airbag 1002 enters the adjacent second cavity 1204 through the adjacent connecting pipe 1106. The first airbag 302 and the second airbag 1002 are gradually reset. After the second extrusion component 1205 is completely reset, the support component 1101 is gradually reset and gradually loses support for the pipeline 101. After the movable plate 2 and the parts thereon are completely reset, the staff turns off the first motor 1108 and removes the welded pipeline 101.

[0029] In order to ensure the welding quality of the pipeline, a groove is usually set on the area to be welded of the pipeline to ensure the penetration depth of the weld. However, when welding the pipeline, the existing welding equipment simply performs a single movement along the welding area, so that the welding points in the pipeline welding area cannot completely cover the groove area, and the groove set on the pipeline cannot be completely welded, resulting in uneven welding in the groove area, thereby reducing the welding effect of the pipeline.

[0030] Embodiment 2: Based on embodiment 1, Figure 6-Figure 8 As shown, the upper side of the fixing frame 5 is slidably connected with a second limit piece 1301, the middle part of the second limit piece 1301 is provided with a limit groove, the mounting shell 8 is rotatably connected with the fixing frame 5, the lower side of the second limit piece 1301 is fixedly connected with two third limit pieces 1302 arranged in front and back mirror images, the third limit piece 1302 is provided with a first through hole 1303, the upper side of the intermediate ring 4 is rotatably connected with a rotating rod 1304, the rotating rod 1304 is connected to the first rotating shaft 1402 through a pulley belt transmission, and the front eccentric portion of the lower side of the rotating rod 1304 is provided with a second limit piece. The limiting protrusion that cooperates with the limiting groove on the part 1301 squeezes the limiting groove through the limiting protrusion, so that the second limiting part 1301 and the fixing frame 5 slide relative to each other, and the two first through holes 1303 slide together with the limiting rod 1305. The upper side of the mounting shell 8 is provided with a second through hole 1306 that slides with the limiting rod 1305. The second through hole 1306 is squeezed by the limiting rod 1305 to make the mounting shell 8 and the fixing frame 5 rotate relative to each other, and the length of the second through hole 1306 in the vertical direction is greater than the diameter of the limiting rod 1305.

[0031] like Figure 6-Figure 8 As shown, the middle and upper part of the fixed frame 5 is slidably connected with the mobile frame 1501, and the lower side of the fixed frame 5 is rotatably connected with two deflection members 1502 which are symmetrically arranged in the front and rear centers. The limiting rod 1305 and the deflection member 1502 are both limited and matched with the mobile frame 1501. The limiting rod 1305 is squeezed by the mobile frame 1501 to make the limiting rod 1305 and the mounting shell 8 slide relative to each other. The mobile frame 1501 is squeezed by the deflection member 1502 to make the mobile frame 1501 and the fixed frame 5 slide relative to each other. A sixth elastic element 1503 is fixedly connected between the deflection member 1502 and the fixed frame 5. The sixth elastic element 1503 is a torsion spring, which is used to reset the adjacent deflection member 1502. The rotation center of the mounting shell 8 on the fixed frame 5 is located at the lower side of the mounting shell 8, which is used to deflect the mounting shell 8.

[0032] During the counterclockwise rotation of the first rotating shaft 1402, the first rotating shaft 1402 transmits power to the rotating rod 1304 through the pulley belt, and then the rotating rod 1304 starts to rotate counterclockwise, and the limiting protrusion on the rotating rod 1304 starts to squeeze the limiting groove on the second limiting member 1301, and then the second limiting member 1301 starts to move rightward, and the second limiting member 1301 slides relatively with the fixing frame 5, and the second limiting member 1301 drives the third limiting member 1302 to move rightward together, and the second limiting member 1301 drives the limiting rod 1305 to move rightward together, and the limiting rod 1305 squeezes the second through hole 1306 to the right, and then the mounting shell 8 starts to deflect counterclockwise (in the front view direction). The mounting shell 8 drives the welding module 9 to deflect counterclockwise. During the process, the limit rod 1305 slides in the second through hole 1306. After the rotating rod 1304 rotates 90° counterclockwise, the second limit member 1301 moves to the right to the extreme position. As the rotating rod 1304 continues to rotate counterclockwise, the second limit member 1301 and the parts thereon begin to move to the left, and the welding module 9 begins to deflect clockwise. As the rotating rod 1304 continues to rotate counterclockwise, the welding module 9 deflects repeatedly, thereby uniformly welding the groove area on the pipe 101 to prevent the welding points of the welding module 9 on the pipe 101 from remaining unchanged, resulting in a small welding area and incomplete welding, thereby reducing the welding effect on the pipe 101.

[0033] During the process of the two pipes 101 moving toward each other, when the groove on the pipe 101 contacts the adjacent deflection member 1502, as the pipe 101 continues to move, the groove area on the pipe 101 begins to squeeze the adjacent deflection member 1502 upward, the deflection member 1502 begins to deflect upward and squeeze the movable frame 1501, the adjacent sixth elastic element 1503 is deformed, and then the movable frame 1501 begins to move upward, and the movable frame 1501 drives the limiting rod 1305 to move upward together, the limiting rod 1305 slides in the second through hole 1306, and increases the distance between the limiting rod 1305 and the rotation center between the fixed frame 5 and the mounting shell 8. Since the distance that the second limit member 1301 moves left and right remains unchanged, the deflection angle of the mounting shell 8 on the fixing frame 5 is reduced, that is, the deflection angle of the welding module 9 is reduced, so as to adapt to grooves of different angles, so that the pipes 101 with grooves of different angles can be welded to the same extent, thereby ensuring the welding quality of the pipes 101 while improving the application scope of the device. After the welding of the pipe 101 is completed, and in the process of the pipe 101 being separated from the deflection member 1502, the pipe 101 gradually loses the squeeze on the deflection member 1502, and then the deflection member 1502 is reset under the action of the torsion of the adjacent sixth elastic element 1503.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-fixing welding device for construction engineering, comprising a frame (1), the frame (1) being slidably connected to a moving plate (2) arranged in a mirror image, the moving plate (2) being slidably connected to a moving member (301), the moving member (301) being provided with a first air bag (302), the frame (1) being fixedly connected to an intermediate ring (4), a fixing frame (5) being fixedly connected to a side of the intermediate ring (4) away from the frame (1), the frame (1) being slidably connected to a support plate (6) arranged evenly, a first elastic element (7) being fixedly connected between the support plate (6) and the frame (1), the fixing frame (5) being provided with a mounting shell (8), the mounting shell (8) being provided with a welding module (9), characterized in that: The invention also comprises a rotating ring (1001) arranged in a mirror image, wherein the rotating rings (1001) arranged in a mirror image are all rotatably connected to the intermediate ring (4), a second air bag (1002) is arranged in the rotating ring (1001), a solenoid valve (1003) is installed on a side of the intermediate ring (4) away from the frame (1), an air storage tank (1004) and a pump body (1005) are installed on the frame (1), the air storage tank (1004) and the intermediate ring (4) are both connected to the pump body (1005) via an intermediate pipe, and a clamping mechanism for centering the pipeline (101) is arranged on a side of the frame (1) close to the movable plate (2) arranged in a mirror image.

2. A self-fixing welding device for construction engineering according to claim 1, characterized in that: The clamping mechanism comprises support members (1101) arranged in a mirror image and in an annular array, the support members (1101) arranged in a mirror image and in an annular array are respectively slidably connected to adjacent moving members (301), a second elastic element (1102) is fixedly connected between the support member (1101) and the adjacent moving member (301), the opposite sides of the mirror image moving plates (2) are slidably connected to uniformly arranged guide rods (1103), a third elastic element (1104) is fixedly connected between the guide rods (1103) and the adjacent moving plates (2), a U-shaped plate (1105) is fixedly connected to the uniformly arranged guide rods (1103) on the same moving plate (2), a cavity is provided in the rotating ring (1001), the cavity is communicated with the adjacent second airbag (1002), the support member (1101) is rotatably connected to a fixing ring, the fixing ring is fixedly connected to the frame (1), the first airbag (302) ) is connected to the cavity on the adjacent rotating ring (1001) by a connecting pipe (1106), the connecting pipe (1106) is fixedly connected to the adjacent fixed ring, a first limiting member (1107) is fixedly connected to the side of the movable member (301) close to the intermediate ring (4), and the first limiting member (1107) on the movable member (301) is limitedly matched, the frame (1) is installed with a first motor (1108), the output shaft of the first motor (1108) is fixedly connected to a transmission gear (1109), a rack (1110) arranged symmetrically with the center is slidably connected to the side of the frame (1) close to the transmission gear (1109), the rack (1110) is meshed with the transmission gear (1109), the rack (1110) is fixedly connected to the adjacent movable plate (2), and a transmission component for providing a welding environment for the pipeline (101) is arranged on the side of the movable plate (2) away from the frame (1).

3. A self-fixing welding device for construction engineering according to claim 2, characterized in that: The back ends of the annular array of support members (1101) on the same moving member (301) are all provided with elastic plates for fitting against the inner wall of the pipe (101).

4. A self-fixing welding device for construction engineering according to claim 2, characterized in that: The first limiting member (1107) is in the shape of a boss and is used to enable the moving members (301) arranged in a mirror image to rotate synchronously.

5. A self-fixing welding device for construction engineering according to claim 2, characterized in that: The transmission assembly comprises a first extruded member (1201), the first extruded member (1201) being rotatably connected to the adjacent moving plate (2), the first extruded member (1201) being slidably connected to the adjacent moving member (301), a connecting ring being rotatably connected to the side of the moving member (301) away from the adjacent first limiting member (1107), a fourth elastic element (1202) being fixedly connected between the connecting ring and the adjacent moving plate (2), the moving member (301) being provided with a first cavity (1 203 and a second cavity (1204), the first cavity (1203) and the second cavity (1204) are both filled with a transmission medium, the first extrusion member (1201) slides in the adjacent first cavity (1203), the first cavity (1203) and the second cavity (1204) are slidably connected with a second extrusion member (1205), and a fifth elastic element (1206) is fixedly connected between the second extrusion member (1205) and the adjacent moving member (301).

6. A self-fixing welding device for construction engineering according to claim 5, characterized in that: The elastic coefficient of the fifth elastic element (1206) is greater than the sum of the elastic coefficients of the adjacent and annularly arrayed second elastic elements (1102), and is used to enable the support member (1101) to support the pipeline (101) in advance.

7. A self-fixing welding device for construction engineering according to claim 2, characterized in that: The frame (1) is installed with a second motor (1401), the frame (1) is rotatably connected to a first rotating shaft (1402), the output shaft of the second motor (1401) is fixedly connected to a second rotating shaft (1403), the second rotating shaft (1403) is rotatably connected to the frame (1), the frame (1) is rotatably connected to a third rotating shaft (1404), the first rotating shaft (1402), the second rotating shaft (1403) and the third rotating shaft (1404) are connected via a bevel gear set, and the rotating ring (1001) and the third rotating shaft (1404) are connected via a spur gear set.

8. A self-fixing welding device for construction engineering according to claim 7, characterized in that: A second limiting member (1301) is slidably connected to a side of the fixing frame (5) close to the intermediate ring (4), and the second limiting member (1301) is provided with a limiting groove. The mounting shell (8) is rotatably connected to the fixing frame (5), and a third limiting member (1302) arranged in a mirror image is fixedly connected to a side of the second limiting member (1301) close to the mounting shell (8), and the third limiting member (1302) is provided with a first through hole (1303). A rotating rod (1304) is rotatably connected to a side of the intermediate ring (4) away from the frame body (1), and the rotating rod (1304) is rotatably connected to the fixing frame (5). 4) is connected to the first rotating shaft (1402) through a pulley belt transmission, a limiting protrusion is provided at an eccentric position of the rotating rod (1304) close to the second limiting member (1301), the limiting protrusion is limitedly matched with the limiting groove on the second limiting member (1301), the first through hole (1303) arranged in a mirror image is slidably matched with the limiting rod (1305), and a second through hole (1306) is provided on the side of the mounting shell (8) close to the intermediate ring (4), and the second through hole (1306) is limitedly slidably matched with the limiting rod (1305).

9. A self-fixing welding device for construction engineering according to claim 8, characterized in that: The fixed frame (5) is slidably connected to a movable frame (1501); a side of the fixed frame (5) close to the mounting shell (8) is rotatably connected to a deflection member (1502) arranged symmetrically with respect to the center; the limiting rod (1305) and the deflection member (1502) are both limitedly matched with the movable frame (1501); and a sixth elastic element (1503) is fixedly connected between the deflection member (1502) and the fixed frame (5).

10. A self-fixing welding device for construction engineering according to claim 8, characterized in that: The rotation center of the mounting shell (8) on the fixing frame (5) is located on a side away from the rotating rod (1304), and is used to cause the mounting shell (8) to deflect.

Images