Pipe welding device for building construction and using method thereof

Abstract

The invention discloses a pipe welding device for building construction and a using method of the pipe welding device, and relates to the technical field of welding equipment.The pipe welding device for building construction is provided, after pipe bodies needing to be welded are clamped one by one, an ellipsoidal air bag is stuffed into the two pipe bodies needing to be welded, and expansion of the pipe bodies needing to be welded is controlled in time; and then pressure is applied from the interiors of the two pipe bodies needing to be welded, so that the two pipe bodies needing to be welded are in good butt joint, and then welding operation is assisted. The technical effects that the pipe adjustment and butt joint process is simple and convenient, the quality of welded finished products is good, and the requirement for butt joint welding experience of operators is low are achieved.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and in particular to a welding device for pipes used in building construction and its method of use. Background Technology

[0002] In building construction, pipe welding is a crucial step in the construction and installation of various piping systems, primarily used in scenarios requiring high-strength connections, sealing, and durability. During welding, the pipe bodies are joined together and then welded using a welding machine. It is essential to keep the ends of the two pipe bodies as flush as possible and to ensure that the axes of the two pipe bodies near the joint coincide, thereby guaranteeing the stability of the pipe bodies during welding and subsequent use.

[0003] However, two problems will be encountered in the actual welding process: Firstly, the end face of the pipe body to be welded near the assembly end may not be vertical and flush due to cutting or other reasons. If the end face is used as the reference for welding, the probability of the finished product being a bent pipe is relatively high (the axes of the two pipe bodies to be welded near the assembly end do not coincide), which affects the finished product qualification rate. Secondly, the pipes to be welded may be bent before welding due to transportation, relocation, storage, their own material, environment, etc. If the pipe axis is positioned by multi-point clamping (using multiple sets of telescopic rods to press against and squeeze the outer wall of the pipe to position the pipe axis), the end faces of the two pipes to be welded near the combined end may be misaligned and difficult to adjust to be flush. Both issues can affect the quality of the welded product. Furthermore, if the two pipes are adjusted in detail to achieve the desired effect, the process is not only tedious and time-consuming, but also requires a high level of experience from the operators.

[0004] Therefore, there is a need for a pipe welding device for building construction that has a simple and convenient adjustment process, produces high-quality finished products, and requires less experience from operators in welding. Summary of the Invention

[0005] This application provides a pipe welding device for building construction, which solves the technical problems of the existing technology, such as the cumbersome and complicated pipe butt welding process, the time and labor consumption, the high requirements for the experience of operators, and the poor quality of finished products. It achieves the technical effect of simpler and more convenient pipe adjustment and butt welding process, good quality of welded products, and low requirements for the butt welding experience of operators.

[0006] This application provides a pipe welding device for building construction, including two pipe clamping assemblies, a pipe support bladder assembly, and an air pump; The pipe clamping assembly is used to clamp and position the pipe to be welded, thereby assisting in the welding of the pipe; the two pipe clamping assemblies are symmetrically arranged and have the same length direction, and the main body is a rigid ring that is slidably positioned on the guide rail and has built-in clamping components. The propulsion bladder assembly includes an inner propulsion bladder body and a ventilation tube; The inner support bladder is an elastic bladder made of silicone, with an opening at one end; The ventilation tube is a horizontally placed rigid tube that is inserted into and fixed in the opening of the inner support bladder. The air pump controls the expansion and contraction of the tube bladder assembly.

[0007] Furthermore, the pipe clamping assembly includes a bottom rail, a sliding carrier, a rotating carrier ring, and a floating clamping body; The bottom rail is a horizontally placed rigid guide rail, positioned on the ground; The sliding frame is slidably positioned on the bottom rail; The rotating carrier ring is a vertically placed rigid ring with its axial direction being the same as the length direction of the bottom rail, and it is rotatably connected to the moving carrier frame around its own axis. The floating clamping body is a telescopic rod structure, positioned on the inner ring of the rotating carrier ring, and there are multiple of them.

[0008] Furthermore, the floating clamping body includes a telescopic body, a spring body, a wheel frame, and a stop wheel; one end of the telescopic body is fixed to the inner ring of the rotating carrier ring, and its axis intersects with the axis of the rotating carrier ring; the spring body is a metal compression spring, which plays a buffering role, and one end is fixed to the other end of the telescopic body and is coaxial with the telescopic body; the wheel frame is fixed to the other end of the spring body and is a U-shaped rigid frame, which plays the role of supporting the stop wheel; the stop wheel is a horizontally placed cylindrical wheel body that abuts against the outer wall of the pipe to be welded during use.

[0009] Preferably, it also includes a connecting component; The connecting component is used to connect the inner support bladder to the air pump, and includes a connecting pipe; the connecting pipe is a flexible tube and / or a rigid tube.

[0010] Preferably, it also includes a functional tube, a support body, and a gas delivery head; The functional tube is a rigid tube body, on which a battery, a pump body, and a valve body are positioned; the valve body is a switch valve used to control the air passage of the functional tube. One end of the functional tube is fixed to the vent tube; The support body includes a carrier tube, an outer annular bladder, and a combined tube; The carrier tube is a rigid tube, with one end fixed to the other end of the functional tube and coaxial with the functional tube; The outer annular bladder is an elastic material annular bladder, which is sleeved and fixed on the carrier tube and connected to the pump body through the combined tube. The air delivery head is a trumpet-shaped rubber tube, with the small end connected to the air pump via a flexible hose.

[0011] Preferably, multiple heat insulation strips are fixed on the outer wall of the inner support bladder to provide heat insulation and anti-wear function; the heat insulation strips are silicone soft strips, which are evenly distributed around the axis of the ventilator around the periphery of the inner support bladder; An outer bladder is fitted onto the inner support bladder and is detachably fixed thereon; the outer bladder is an ellipsoidal bladder made of elastic cloth or silicone, fixed to the ventilator, and covers the inner support bladder and its heat insulation strip.

[0012] Preferably, the inner support bladder also has a built-in spring and an end block fixed inside; the end block is a hard or rubber block, fixed inside the inner support bladder at the end away from the ventilator, and is used to support the built-in spring; the built-in spring is a metal or non-metal compression spring with a diameter of less than 3 cm, and its two ends are fixed to the ventilator and the end block respectively, serving as a skeleton.

[0013] Preferably, the pipe clamping assembly further includes a temporary bracket; the temporary bracket is a rigid telescopic rod with a support plate on top and placed vertically, which can be extended and retracted manually or electrically, and can be placed on the ground or on the bottom rail. When the pipe to be welded is long, the temporary bracket can provide temporary support for it.

[0014] Preferably, the sliding frame is detachably and slidably positioned on the bottom rail.

[0015] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: By providing a pipe welding device for building construction, the pipes to be welded are clamped one by one, and an ellipsoidal air bladder is inserted into the two pipes to be welded and its expansion is controlled in a timely manner. Pressure is then applied from inside the two pipes to be welded, so that the two pipes can be welded to a better joint, thus assisting the welding operation. This effectively solves the technical problems of the existing pipe butt welding process being cumbersome, time-consuming, labor-intensive, requiring high experience from operators, and producing poor quality finished products. Thus, it achieves the technical effect of simpler and more convenient pipe adjustment and butt welding process, better quality welded products, and lower requirements for operators' butt welding experience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram showing the positional relationship of the components of the pipe welding device for building construction in this application; Figure 2 This is a schematic diagram of the external structure of the pipe welding device for building construction in this application; Figure 3 A schematic diagram showing the positional relationship between the tube support bladder assembly, the connecting assembly, and the air pump; Figure 4 This is a schematic diagram of the internal structure of the endovascular bundle assembly; Figure 5This is a schematic diagram showing the positional relationship of the various components inside the endovascular bundle assembly; Figure 6 A schematic diagram showing the positional relationship between the connecting pipe, the pipe winding and unwinding drum, and the pipe pulling assembly; Figure 7 This is a schematic diagram of the pipe-pulling assembly. Figure 8 A schematic diagram showing the positional relationship between the tube support assembly, functional tubes, and support body; Figure 9 A simplified diagram showing the connection relationship between the power supply, pump body, and valve body; Figure 10 A schematic diagram showing the positional relationship between the tube support assembly, the tube to be welded, and the gas delivery head; Figure 11 A simplified structural diagram of the support structure; Figure 12 This is a schematic diagram of the gas delivery head.

[0017] In the picture: Components required: welded pipe 000, bottom rail 001, sliding carrier 002, rotating carrier ring 003, floating clamping body 004, telescopic body 005, spring body 006, wheel frame 007, abutment wheel 008, clamping and lifting assembly 100, pipe support bladder assembly 200, inner support bladder 201, built-in spring 202, vent pipe 203, end block 204, heat insulation strip 205, base strip 206, covering belt 207, outer bladder 208, ball wheel 209. Inner pull rope; 210. Connecting pipe; 301. Pipe winding and unwinding drum; 302. Pipe pulling assembly; 303. Basic pipe body; 304. Rotating rod; 305. Rotating wheel; 306. Air pump; 400. Functional pipe; 500. Battery; 501. Pump body; 502. Valve body; 503. Support body; 600. Carrier pipe; 601. Outer annular bladder; 602. Combined pipe; 603. Anti-wear ring; 604. Air delivery head; 700. Pressure sensor; 701. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0019] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] Example 1: like Figures 1 to 4 As shown, the pipe welding device for building construction of this application includes two pipe clamping assemblies, a pipe support bladder assembly 200, a connecting assembly, an air pump 400, and a control unit.

[0022] The pipe clamping assembly is used to clamp and position the pipe to be welded 000, thereby assisting in the welding of the pipe to be welded 000; the two pipe clamping assemblies are symmetrically arranged and have the same length direction; The pipe clamping assembly includes a bottom rail 001, a sliding frame 002, a rotating ring 003, and a floating clamping body 004; The bottom rail 001 is a horizontally placed rigid guide rail, positioned on the ground, and serves as a guide. The sliding frame 002 is a rigid frame that is slidably positioned on the bottom rail 001 and is used to support and position the rotating ring 003. The rotating carrier ring 003 is a vertically placed rigid ring with its axial direction being the same as the length direction of the bottom rail 001. It is rotatably connected to the sliding carrier 002 around its own axis. Under the control of the control unit and driven by the motor, it rotates in a timely manner to assist the welding operation. The floating clamping body 004 is an overall telescopic rod structure, positioned on the inner ring of the rotating carrier ring 003. Three floating clamping bodies 004 are positioned on each rotating carrier ring 003. The three floating clamping bodies 004 are evenly spaced and distributed on the inner ring of the floating clamping body 004, and their axes intersect with the axis of the rotating carrier ring 003.

[0023] Furthermore, the floating clamping body 004 includes a telescopic body 005, a spring body 006, a wheel frame 007, and a stop wheel 008; the telescopic body 005 is an electrically, pneumatically, or hydraulically driven telescopic rod, one end of which is fixed to the inner ring of the rotating carrier ring 003, and its axis intersects with the axis of the rotating carrier ring 003; the spring body 006 is a metal compression spring that plays a buffering role, one end of which is fixed to the other end of the telescopic body 005 and coaxial with the telescopic body 005; the wheel frame 007 is fixed to the other end of the spring body 006 and is a U-shaped rigid frame that serves to support the stop wheel 008; the stop wheel 008 is a horizontally placed cylindrical wheel that abuts against the outer wall of the pipe to be welded 000 during use.

[0024] Preferably, the spacing between the bottom rails 001 of the two-tube clamping assembly is less than 30 cm.

[0025] Preferably, the ends of the bottom rails 001 of the two-tube clamping assemblies are fixed together or share a single bottom rail 001.

[0026] The tube support bladder assembly 200 is an ellipsoidal bladder. When in use, it is inserted into two tubes to be welded 000 at the same time and connected to the air pump 400. Under the control of the control unit, it expands in time and squeezes against the inner wall of the tubes to be welded 000, thereby assisting the two tubes to be welded 000 to complete the docking. The tube support bladder assembly 200 includes an inner support bladder body 201 and a ventilation tube 203; The inner support bladder 201 is an elastic bladder made of silicone material, with an opening at one end for air to enter and exit. The ventilation tube 203 is a horizontally placed rigid tube that is inserted into and fixed in the opening of the inner support bladder 201.

[0027] The connecting component is used to connect the inner support bladder 201 and the air pump 400, and includes a connecting pipe 301; the connecting pipe 301 is a flexible tube and / or a rigid tube.

[0028] The air pump 400 is used to pump gas and is controlled by the control unit.

[0029] The control unit plays a role in coordinating the operation of various components of the pipe welding device for building construction. This is existing technology and will not be described in detail here.

[0030] When the pipe welding device for building construction used in this application is used: 1. First, use two pipe clamping assemblies to clamp and fix the two pipes 000 to be welded (the pipe 000 is the pipe body to be welded); 2. Push the sliding carrier 002 to bring the two pipes to be welded 000 closer together, ensuring that the distance between them is less than 10 cm; 3. Insert the tube support bladder assembly 200 into one of the tubes to be welded 000 and (with the help of a rod, etc.) push it between the two tubes to be welded 000 (so that the tube support bladder assembly 200 is inserted into both tubes to be welded 000 at the same time). 4. Push the sliding carrier 002 to bring the ends of the two pipes 000 to be welded together; 5. Control the expansion of the tube support bladder assembly 200 to apply pressure from inside the weldable tube 000 so that the two weldable tubes 000 are close to the joint position and coaxial; if the weldable tubes 000 no longer touch each other after the tube support bladder assembly 200 expands, then control the tube support bladder assembly 200 to shrink slightly and then move (push or pull) the sliding carrier 002 or the weldable tubes 000 to make the two weldable tubes 000 touch each other, and then control the tube support bladder assembly 200 to expand again; 6. Use a welding machine to spot weld the two pipes 000, at least 3 spots, then control the pipe support bladder assembly 200 to retract and pull it out; 7. Weld the two pipes 000 until the welding is completed, then remove the finished product.

[0031] Furthermore, such as Figure 4 As shown, multiple heat insulation strips 205 are fixed on the outer wall of the inner support bladder 201 to provide heat insulation and anti-wear function; the heat insulation strips 205 are silicone soft strips, the length direction is similar to the length direction of the inner support bladder 201, and they are evenly distributed around the circumference of the inner support bladder 201 around the axis of the ventilator 203.

[0032] Furthermore, such as Figure 4 As shown, the heat insulation strip 205 includes a base strip 206 and a covering strip 207; the base strip 206 is a silicone soft strip, the length direction of which is similar to the length direction of the inner support bladder 201, and it is evenly distributed around the axis of the ventilator 203 around the circumference of the inner support bladder 201; the covering strip 207 is a metal strip, the same length as the base strip 206, and it is tightly attached to and fixed to the surface of the base strip 206 away from the inner support bladder 201.

[0033] Preferred, such as Figure 4 As shown, an outer bladder 208 is sleeved on and detachably fixed to the inner support bladder 201; the outer bladder 208 is an ellipsoidal bladder made of elastic cloth or silicone, fixed to the vent pipe 203, covering the inner support bladder 201 and the heat insulation strip 205 thereon, in order to prevent the inner support bladder 201 from leaking air due to wear, scratches, contact with sparks, etc.

[0034] Preferred, such as Figure 5 As shown, in order to facilitate the sliding of the inner support bladder 201 within the weldable tube 000, an internal spring 202 and an end block 204 are also fixed inside the inner support bladder 201; the end block 204 is a hard or rubber block, fixed inside the inner support bladder 201 at the end away from the vent tube 203, and is used to support the internal spring 202; the internal spring 202 is a metal or non-metal compression spring with a diameter of less than 3 cm, and its two ends are fixed to the vent tube 203 and the end block 204 respectively, serving as a skeleton.

[0035] Preferred, such as Figure 5 As shown, in order to facilitate the sliding of the inner support bladder 201 within the weldable pipe 000, the inner support bladder 201 is densely covered with inner tension ropes 210; the inner tension ropes 210 are elastic ropes, both ends of which are fixed to the inner wall of the inner support bladder 201, and the length direction is perpendicular to the axial direction of the inner support bladder 201; when the inner support bladder 201 expands, the inner tension ropes 210 are in a stretched state; the presence of the inner tension ropes 210 causes the inner support bladder 201 to contract into an approximately rod-like shape when it is in a contracted state.

[0036] Preferred, such as Figure 5 As shown, in order to facilitate the sliding of the inner support bladder 201 within the weldable tube 000, the surface of the outer bladder 208 is provided with a plurality of ball wheels 209; the ball wheels 209 are preferably bullseye balls.

[0037] Preferred, such as Figure 6 As shown, to facilitate the insertion and removal of the tube support assembly 200, the connecting assembly also includes a tube winding and unwinding drum 302; the tube winding and unwinding drum 302 is a drum structure with a built-in gas channel, connected to the air pump 400, and rotates under control; one end of the connecting tube 301 is fixed and wound around the tube winding and unwinding drum 302 and connected to the gas channel inside the tube winding and unwinding drum 302; the tube winding and unwinding drum 302 rotates under control as needed to assist in the insertion and efficient removal of the tube support assembly 200.

[0038] Preferred, such as Figure 2 As shown, the pipe clamping assembly also includes a temporary bracket; the temporary bracket is a rigid telescopic rod with a support plate on the top and placed vertically, which can be extended and retracted manually or electrically, and can be placed on the ground or on the bottom rail 001. When the pipe to be welded 000 to be processed is long, the temporary bracket can provide temporary support for it.

[0039] Preferably, the presence of temporary brackets enables the pipe welding device for building construction of this application to handle various types of bent pipes and long pipes.

[0040] Furthermore, the connecting pipe 301 and the vent pipe 203 are detachably and fixedly connected together. When inserting the tube support assembly 200, the vent pipe 203 can be inserted first, and then the vent pipe 203 and the tube support assembly 200 can be connected and fixed. Then the tube support assembly 200 can be inserted through the gap between the two weldable pipes 000, thereby reducing the wear of the tube support assembly 200 and improving the work efficiency.

[0041] Preferred, such as Figure 6 and Figure 7As shown, considering that manually inserting the connecting tube 301 is inefficient, a tube-pulling assembly 303 is added to the end of the connecting tube 301 to automatically complete the tube-pulling operation mechanically. The tube-pulling assembly 303 includes a base tube body 304, a rotating rod 305, and a rotating wheel 306. The base tube body 304 is a rigid tube body fixed to the end of the connecting tube 301. The rotating rod 305 is an inclined rigid rod body, one end of which is rotatably connected to the outer wall of the base tube body 304. The axial direction of the rotating shaft is perpendicular to the axial direction of the base tube body 304. A torsion spring is positioned at the connection point. The presence of this component ensures that the rotating rod 305 always tends to move away from the base pipe 304; the rotating wheel 306 is positioned at the other end of the rotating rod 305, with its axis perpendicular to the axis of the base pipe 304, and rotates under the drive of a micro motor; multiple combinations of rotating rods 305 and rotating wheels 306 are provided on the outer wall of the base pipe 304, and these combinations are evenly distributed around the axis of the base pipe 304; in use, the pipe-pulling assembly 303 is inserted into the pipe to be welded 000 to move the connecting pipe 301.

[0042] Preferably, the end of the base tube 304 away from the connecting tube 301 is positioned with a magnetic ring and an electric buckle, and the end of the vent tube 203 away from the inner support bladder 201 is provided with an iron ring; in use, the support bladder assembly 200 can be inserted, and the magnetic ring and electric buckle are used to automatically connect the support bladder assembly 200 and the connecting assembly in the tube to be welded 000.

[0043] Preferred, such as Figure 1 and Figure 2 As shown, a clamping and lifting assembly 100 is also positioned between the two pipe clamping assemblies; the clamping and lifting assembly 100 is an electric clamp capable of lifting and lowering (an electric clamp positioned on a vertical telescopic rod); in use, the pipe support bag assembly 200 can be placed on the pipe support bag assembly 200, and after the clamping and lifting assembly 100 clamps the pipe support bag assembly 200, the pipe clamping assembly automatically inserts the pipe support bag assembly 200 into the pipe to be welded 000, reducing the risk of pinching hands.

[0044] Preferably, during welding, an automatic welding machine is used to complete the welding operation.

[0045] The technical solutions described in the embodiments of this application above have at least the following technical effects or advantages: This technology solves the technical problems of existing pipe butt welding processes being cumbersome, time-consuming, labor-intensive, requiring high levels of operator experience, and producing poor-quality finished products. It achieves the technical benefits of simpler and more convenient pipe adjustment and butt welding processes, better welded product quality, and lower requirements for operator butt welding experience.

[0046] Example 2: To further improve the practicality and applicability of this application, enabling it to efficiently and effectively handle bends and slender pipes with large curvatures, the embodiments of this application eliminate the connecting component compared to the above embodiments. Figures 8 to 12 As shown, a functional tube 500, a support body 600, and a gas delivery head 700 have been added; details are as follows: like Figure 8 and Figure 9 As shown, the functional tube 500 is a rigid tube body, on which a battery 501, a pump body 502, and a valve body 503 are positioned; the battery 501 is used to power the pump body 502 and the valve body 503; the pump body 502 is a gas pump used to deliver gas; the valve body 503 is a switching valve used to control the opening and closing of the gas path of the functional tube 500, and its operation is controlled by the control unit; the control unit has a remote control function, and a remote control module is provided on the functional tube 500; One end of the functional tube 500 is fixed to the vent tube 203; like Figure 11 As shown, the support body 600 is used to fix the tube support bladder assembly 200 within the weldable tube 000 at appropriate times, and includes a carrier tube 601, an outer annular bladder 602, and a combination tube 603; the carrier tube 601 is a rigid tube, one end of which is fixed to the other end of the functional tube 500 and coaxial with the functional tube 500; the outer annular bladder 602 is an elastic annular bladder, which is sleeved and fixed on the carrier tube 601; the outer annular bladder 602 is connected to the pump body 502 through the combination tube 603; the control unit controls the operation of the pump body 502 and controls the expansion and contraction of the outer annular bladder 602; The air delivery head 700 is a trumpet-shaped rubber tube, with its small end connected to the air pump 400 via a flexible hose.

[0047] When the pipe welding device for building construction used in this application is used: 1. First, use two pipe clamping assemblies to clamp and fix the two pipes to be welded. 2. Push the sliding carrier 002 to bring the two pipes to be welded 000 closer together; 3. Simultaneously insert the combination of the tube support bladder assembly 200, the functional tube 500 and the support body 600 into the two tubes to be welded 000, and position the tube support bladder assembly 200 at the joint of the two tubes; control the support body 600 to expand and press against the inner wall of the tube to be welded 000 to seal the tube to be welded 000; 4. Push the sliding carrier 002 to bring the ends of the two pipes 000 to be welded together; 5. Cover the end of the pipe to be welded 000 containing the support body 600 with the air supply head 700 and press it tightly. Blow air into it to inflate the pipe support bag assembly 200 and apply pressure from inside the pipe to be welded 000 so that the two pipes to be welded 000 are coaxial near the joint. 6. Use a welding machine to spot weld the two pipes 000 that need to be welded. After spot welding at least 3 places, control the outer annular bladder 602 to contract. The gas output from the gas delivery head 700 impacts the combination of the pipe support bladder assembly 200, the functional tube 500 and the support body 600 and blows it out of the pipes 000 that need to be welded. 7. Weld the two pipes 000 until the welding is completed, then remove the finished product.

[0048] The reason for not using pump body 502 to inflate the strut assembly 200 is that smaller gas pumps have low inflation efficiency and can only produce a small pressure that is insufficient for use.

[0049] Preferably, in order to facilitate the removal of the pipe to be welded 000, the sliding carrier 002 is detachably and slidably positioned on the bottom rail 001.

[0050] like Figure 8 As shown, preferably, in order to facilitate the bending of the tube support assembly 200 within the weldable tube 000 and reduce wear, a rigid ball head is fixed to the end of the tube support assembly 200 away from the functional tube 500.

[0051] Preferred, such as Figure 11 As shown, an anti-wear ring 604 is sleeved and fixed on the outer annular bladder 602; the anti-wear ring 604 is a ring made of elastic rubber, coaxial with the carrier tube 601, and is used to reduce wear when the outer annular bladder 602 moves.

[0052] Furthermore, the tube support assembly 200 and the support body 600 are available in various specifications, and both can be detached and fixed on the functional tube 500, and can be replaced as needed according to the inner diameter of the tube to be welded 000.

[0053] Preferred, such as Figure 12 As shown, a pressure sensor 701 is positioned near the small end of the air delivery head 700; the pressure sensor 701 is a pneumatic pressure sensor and is connected to the control unit; when air is blown into the pipe to be welded 000 by the air delivery head 700, the change in the value measured by the pressure sensor 701 can be used to determine whether the outer annular bladder 602 has expanded to the required extent.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pipe welding device for building construction, characterized in that: Includes two tube clamping assemblies, a tube support bladder assembly (200), and an air pump (400); The pipe clamping assembly is used to clamp and position the pipe to be welded (000), thereby assisting in the welding of the pipe to be welded (000); the two pipe clamping assemblies are symmetrically arranged and have the same length direction, and the main body is a rigid ring that is slidably positioned on the guide rail and has built-in clamping components; The propulsion bladder assembly (200) includes an inner propulsion bladder body (201) and a ventilation tube (203); The inner support bladder (201) is an elastic bladder made of silicone material, with an opening at one end; The ventilation tube (203) is a horizontally placed rigid tube that is inserted into and fixed in the opening of the inner support bladder (201); The air pump (400) pumps air to control the expansion and contraction of the tube bladder assembly (200).

2. The pipe welding device for building construction as described in claim 1, characterized in that: The pipe clamping assembly includes a bottom rail (001), a sliding frame (002), a rotating ring (003), and a floating clamping body (004); The bottom rail (001) is a horizontally placed rigid guide rail, positioned on the ground; The sliding frame (002) is slidably positioned on the bottom rail (001); The rotating carrier ring (003) is a vertically placed rigid ring with its axial direction being the same as the length direction of the bottom rail (001), and it is rotatably connected to the moving carrier frame (002) around its own axis. The floating clamping body (004) is an overall telescopic rod structure, positioned on the inner ring of the rotating carrier ring (003), and there are multiple of them.

3. The pipe welding device for building construction as described in claim 2, characterized in that: The floating clamping body (004) includes a telescopic body (005), a spring body (006), a wheel frame (007), and a stop wheel (008); one end of the telescopic body (005) is fixed on the inner ring of the rotating carrier ring (003), and its axis intersects with the axis of the rotating carrier ring (003); the spring body (006) is a metal compression spring, which plays a buffering role, and one end is fixed on the other end of the telescopic body (005) and is coaxial with the telescopic body (005); the wheel frame (007) is fixed on the other end of the spring body (006) and is a U-shaped rigid frame, which plays a role in supporting the stop wheel (008); the stop wheel (008) is a horizontally placed cylindrical wheel that abuts against the outer wall of the pipe (000) to be welded during use.

4. The pipe welding device for building construction as described in claim 1, characterized in that: It also includes connectivity components; The connecting component is used to connect the inner support bladder (201) and the air pump (400), and includes a connecting tube (301); the connecting tube (301) is a flexible tube and / or a rigid tube.

5. The pipe welding device for building construction as described in claim 1, characterized in that: It also includes a functional tube (500), a support (600), and a gas delivery head (700); The functional tube (500) is a rigid tube body, on which a battery (501), a pump body (502) and a valve body (503) are positioned; the valve body (503) is a switching valve used to control the air passage of the functional tube (500); One end of the functional tube (500) is fixed to the vent tube (203); The support (600) includes a carrier tube (601), an outer annular bladder (602), and a combined tube (603); The carrier tube (601) is a rigid tube body, one end of which is fixed to the other end of the functional tube (500) and coaxial with the functional tube (500); The outer annular bladder (602) is an annular bladder made of elastic material, which is sleeved and fixed on the carrier tube (601) and connected to the pump body (502) through the combined tube (603); The air delivery head (700) is a horn-shaped rubber tube, with its small end connected to the air pump (400) via a flexible hose.

6. The pipe welding device for building construction as described in claim 4 or 5, characterized in that: Multiple heat insulation strips (205) are fixed on the outer wall of the inner support bladder (201) to provide heat insulation and anti-wear function; the heat insulation strips (205) are silicone soft strips, which are evenly distributed around the axis of the ventilator (203) around the circumference of the inner support bladder (201). An outer bladder (208) is fitted onto and detachably fixed to the inner support bladder (201); the outer bladder (208) is an ellipsoidal bladder made of elastic cloth or silicone, fixed to the vent tube (203), covering the inner support bladder (201) and the heat insulation strip (205) on it.

7. The pipe welding device for building construction as described in claim 6, characterized in that: The inner support bladder (201) also has an internal spring (202) and an end block (204) fixed inside; the end block (204) is a hard or rubber block, fixed inside the inner support bladder (201) at the end away from the ventilator (203), and is used to support the internal spring (202); the internal spring (202) is a metal or non-metal compression spring with a diameter of less than 3 cm, and its two ends are fixed to the ventilator (203) and the end block (204) respectively, serving as a skeleton.

8. The pipe welding device for building construction as described in claim 4 or 5, characterized in that: The pipe clamping assembly also includes a temporary bracket; the temporary bracket is a rigid telescopic rod with a support plate on top and placed vertically, which can be extended and retracted manually or electrically, and can be placed on the ground or on the bottom rail (001). When the pipe (000) to be welded is long, the temporary bracket can provide temporary support for it.

9. The pipe welding device for building construction as described in claim 4 or 5, characterized in that: The sliding frame (002) is detachably and slidably positioned on the bottom rail (001).

10. A method of using a pipe welding device for building construction, characterized in that: The steps are as follows: (The text abruptly ends here, likely due to an incomplete sentence or a formatting error.) Step 1: First, use two pipe clamping assemblies to clamp and fix the two pipes (000) to be welded respectively; Step 2: Push the sliding carrier (002) to bring the two pipes (000) to be welded closer together, ensuring that the distance between them is less than 10 cm; Step 3: Insert the tube support assembly (200) into one of the tubes to be welded (000) and push it between the two tubes to be welded (000); Step 4: Push the sliding carrier (002) so that the ends of the two pipes (000) to be welded come into contact together; Step 5: Control the expansion of the tube support assembly (200) and apply pressure from inside the tube to be welded (000) to make the two tubes to be welded (000) close to the joint position and coaxial; Step 6: Use a welding machine to spot weld the two pipes (000) that need to be welded, at least 3 spots, then control the pipe support bladder assembly (200) to retract and pull it out; Step 7: Weld the two pipes (000) until the welding is completed, then remove the finished product.

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