Butt joint tool for welding pipe fitting and pipeline

Abstract

The invention provides a butt joint tool for welding a pipe fitting and a pipeline, and relates to the technical field of pipeline welding, the butt joint tool comprises a supporting mechanism, a mounting disc and a clamping positioning mechanism, the supporting mechanism comprises a clamping pipe hoop and two supporting rods, and the mounting disc comprises an outer disc arranged at the end of the supporting rods and an inner disc rotationally arranged on the outer disc; the clamping and positioning mechanism comprises a mounting rod, a positioning disc and an abutting assembly, the mounting rod is fixed to the inner disc, the positioning disc is detachably arranged on the mounting rod, and the abutting assembly is arranged on the face, facing the pipeline, of the positioning disc; the abutting assembly comprises an abutting disc, a limiting screw and a plurality of abutting rods, the abutting rods are bent rods and distributed on the abutting disc in the circumferential direction, flexible abutting blocks are arranged on the abutting rods, the limiting screw is fixed to the abutting disc, the end of the limiting screw extends out of the positioning disc, and the end, located outside the positioning disc, of the limiting screw is in threaded connection with a limiting nut. The pipe fitting can be conveniently aligned with the pipeline, the position of the pipe fitting is kept, the operation difficulty in the welding process is reduced, and meanwhile the welding quality is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of pipe welding technology, and more specifically, to a butt welding fixture for welding pipe fittings to pipes. Background Technology

[0002] Pipelines are widely used in water supply and drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering, and various industrial installations. Depending on the application, pipelines are installed in various ways, including overhead installation, underground laying, and suspended installation. Pipe fittings are a collective term for components in a pipeline system that serve functions such as connection, control, direction change, flow diversion, sealing, and support. Welding pipe fittings to pipelines is a crucial step in pipeline system installation; its quality directly affects the safety, sealing, and service life of the pipeline. Commonly used pipe fittings include elbows, tees, and pipe joints.

[0003] When it is necessary to weld pipe fittings to pipes, workers need to align one end of the fitting with the pipe and press it firmly before welding. For overhead or suspended installations, this is difficult for workers to operate, and the fittings are prone to shifting, making it difficult to guarantee installation quality. Summary of the Invention

[0004] The purpose of this invention is to provide a butt welding fixture for pipe fittings and pipes, which can easily align the pipe fittings and pipes and maintain the position of the pipe fittings, thereby reducing the operational difficulty of the welding process and ensuring the welding quality.

[0005] This invention is achieved through the following technical solution: a butt welding fixture for welding pipe fittings to pipes, comprising: A support mechanism, comprising a clamping pipe clamp and two support rods, wherein the clamping pipe clamp comprises an upper pipe clamp and a lower pipe clamp, and the two support rods are respectively connected to both sides of the upper pipe clamp; The mounting plate includes an outer plate and an inner plate. The outer plate is fixedly mounted on the end of the support rod away from the clamping clamp and is coaxial with the clamping clamp. The inner plate is rotatably mounted inside the outer plate. A clamping and positioning mechanism includes a mounting rod, a positioning plate, and a clamping assembly. The mounting rod is fixedly mounted on the inner plate, the positioning plate is detachably mounted on the mounting rod, and the clamping assembly is located on the side of the positioning plate facing the pipe. When the positioning plate is installed on the mounting rod, one end of the pipe fitting abuts against the positioning plate, and the other end is concentric with the pipe. The clamping assembly includes a clamping plate, a limiting screw, and multiple clamping rods. The multiple clamping rods are all bent rods and are circumferentially distributed on the clamping plate. One end of the limiting screw is fixedly mounted on the clamping plate, and the other end passes through the positioning plate and extends outside the positioning plate. The end of the limiting screw located outside the positioning plate is threaded with a limiting nut. A flexible clamping block is provided on the side of the clamping rod opposite to the limiting screw.

[0006] Furthermore, the clamping rod includes two support rods hinged to each other, one of which is rotatably connected to the clamping plate and the other is rotatably connected to the positioning plate, and the flexible clamping block is fixedly mounted on one of the support rods.

[0007] Furthermore, a connecting block is provided on one side of the positioning plate, a connecting seat is provided on the mounting rod, a slot is provided on the connecting seat for the connecting block to be inserted, a positioning bolt is threaded onto the connecting block, and a through hole is provided on the connecting seat for the positioning bolt to pass through, the through hole being connected to the slot.

[0008] Furthermore, the support rod includes a connecting section, a first horizontal section, an arc-shaped section, and a second horizontal section. Connecting ears are provided on both sides of the upper pipe clamp. The connecting section is fixedly mounted on the connecting ears. The first horizontal section is located at the bottom of the connecting section and fits against the pipe support. The arc-shaped section is located at the end of the first horizontal section away from the connecting section and extends downward at an angle. The second horizontal section is located at the end of the arc-shaped section away from the first horizontal section.

[0009] Furthermore, the second horizontal section includes an outer rod and an inner rod, the inner rod being slidably disposed within the outer rod, and a telescopic adjustment assembly is provided between the two support rods for driving the inner rods on both sides to move simultaneously toward or away from the outer rod.

[0010] Furthermore, the telescopic adjustment assembly includes a first support and a second support. The two ends of the first support are respectively connected between the outer rods on both sides, and the two ends of the second support are respectively connected between the inner rods on both sides. A retractable member and an extendable member are connected between the first support and the second support.

[0011] Furthermore, the protruding member includes a hinge block, which is rotatably disposed in the middle of the first support and can drive the second support to move away from the first support. The first support is also provided with a clamping plate for keeping the hinge block in a horizontal state. The retracting member includes multiple tension springs disposed on both sides of the hinge block, one end of which is fixedly connected to the first support and the other end is connected to the second support.

[0012] Furthermore, a center positioning component is provided at the center of the inner disk. The center positioning component includes a center column and a center seat. The center column is slidably disposed on the inner disk, and the center seat is rotatably disposed at the end of the center column facing the pipe clamp. A threaded hole is provided on the center seat to cooperate with the limiting screw.

[0013] Furthermore, the central seat is a magnetic seat that can attract the inner disc.

[0014] Furthermore, the mounting rod is provided with an anti-rotation pin, and the outer disc has a plurality of pin holes distributed circumferentially for inserting the anti-rotation pin.

[0015] The technical solution of the present invention has at least the following advantages and beneficial effects: 1. This invention connects pipe fittings to pipelines by clamping pipe clamps, and installs pipe fittings such as elbows or tees by positioning plates and clamping components. After installation, connecting the positioning plate to the installation rod allows one end of the pipe fitting to abut against the positioning plate and the other end to be concentric with the pipeline. By changing the length of the support rod, the pipe fitting can be moved closer to the pipeline and clamped against the end of the pipeline, facilitating the welding process between the pipe fitting and the pipeline.

[0016] 2. This invention moves the limiting screw outward from the clamping plate by tightening the limiting nut. The limiting screw can drive the clamping plate to move synchronously and make multiple clamping rods bend to a specified state at the same time, so that the flexible clamping block abuts against the inner wall of the pipe fitting to achieve the positioning function of the pipe fitting. The bending rods are bent to different states, so they can be adapted to different pipe diameters within a certain range, and can also be clamped for reducing elbows or reducing tees. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure in use of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the support mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of the second horizontal section and the telescopic adjustment component of the present invention; Figure 5 This is a schematic diagram of the telescopic adjustment component of the present invention; Figure 6 This is a schematic diagram of the connection structure between the positioning disk and the mounting rod of the present invention; Figure 7 This is a schematic diagram of the structure of the clamping component and the positioning plate of the present invention; Figure 8 This is a schematic diagram of the structure when the positioning disk of the present invention is installed on the central positioning component; Reference numerals: 1-Support mechanism, 11-Clamping clamp, 111-Upper clamp, 112-Lower clamp, 113-Connecting lug, 12-Support rod, 121-Connecting section, 122-First horizontal section, 123-Arc-shaped section, 124-Second horizontal section, 1241-Outer rod, 1242-Inner rod, 13-Telescopic adjustment assembly, 131-First support, 132-Second support, 133-Retractable component, 1331-Tension spring, 134-Extending component, 1341-Hinge block, 1342-Pressure. 1343-Pulley, 2-Mounting plate, 21-Outer plate, 22-Inner plate, 3-Clamping and positioning mechanism, 31-Mounting rod, 311-Connecting seat, 312-Anti-rotation pin, 32-Positioning plate, 321-Connecting block, 322-Positioning bolt, 33-Clamping assembly, 331-Clamping plate, 332-Limit screw, 333-Clamping rod, 3331-Support rod, 334-Limit nut, 335-Flexible clamping block, 4-Center positioning component, 41-Center column, 42-Center seat, 421-Threaded hole. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0020] Example The following is for reference Figures 1-7As shown in the figure, and further explained with reference to specific embodiments, this embodiment provides a butt welding fixture for pipe fittings and pipelines, including a support mechanism 1, a mounting plate 2, and a clamping and positioning mechanism 3. The support mechanism 1 includes a clamping pipe clamp 11 and two support rods 12. The clamping pipe clamp 11 includes an upper pipe clamp 111 and a lower pipe clamp 112. The two support rods 12 are respectively connected to both sides of the upper pipe clamp 111. The mounting plate 2 includes an outer plate 21 and an inner plate 22. The outer plate 21 is fixed to the end of the support rod 12 away from the clamping pipe clamp 11 and is coaxial with the clamping pipe clamp 11. The inner plate 22 is rotatably disposed within the outer plate 21. The clamping and positioning mechanism 3 includes a mounting rod 31, a positioning plate 32, and a clamping component 33. The mounting rod 31 is fixedly disposed on the inner plate 22. The positioning plate 32 is detachably disposed on the mounting rod 31. The clamping component 33 is disposed on the side of the positioning plate 32 facing the pipeline. When installing pipe fittings such as elbows or tees, the end of the elbow or tee furthest from the pipe is placed against the positioning plate 32 on the ground. Then, the elbow is secured by the clamping component 33 to achieve positioning. The positioning plate 32 with the elbow or tee is then installed onto the mounting rod 31, which ensures that the end of the elbow or tee to be welded is concentric with the end of the pipe, facilitating the welding process.

[0021] Reference Figure 2 , Figure 3 As shown, the support rod 12 includes a connecting section 121, a first horizontal section 122, an arc-shaped section 123, and a second horizontal section 124. Both sides of the upper pipe clamp 111 are provided with connecting ears 113. The connecting section 121 is welded to the connecting ears 113. The first horizontal section 122 is located at the bottom of the connecting section 121 and fits against the pipe support. The arc-shaped section 123 is located at the end of the first horizontal section 122 away from the connecting section 121 and extends downward at an angle. The second horizontal section 124 is located at the end of the arc-shaped section 123 away from the first horizontal section 122. By placing the first horizontal section 122 in contact with the pipe support, some of the weight is distributed to the pipe support, thereby reducing the load on the clamping clamp 11 and improving the overall structural reliability. Since the pipe is attached to the pipe support, and the fittings are roughly at the same height when aligned with the pipe, the height of the second horizontal section 124 is reduced by extending the arc section 123 downward and connecting the second horizontal section 124 to the bottom of the arc section 123, thus avoiding obstruction of the fittings by the second horizontal section 124.

[0022] Reference Figure 3 , Figure 4As shown, the second horizontal segment 124 includes an outer rod 1241 and an inner rod 1242. The inner rod 1242 is slidably disposed inside the outer rod 1241. A telescopic adjustment assembly 13 is provided between the two support rods 12 to drive the inner rods 1242 on both sides to move simultaneously toward or away from the outer rod 1241. During the installation of the pipe fitting, the telescopic adjustment assembly 13 moves the inner rod 1242 outward from the outer rod 1241 to reserve sufficient installation space. After the pipe fitting is installed into the clamping and positioning mechanism 3, the telescopic adjustment assembly 13 moves the inner rod 1242 inward from the outer rod 1241 so that the mounting plate 2 and the clamping and positioning mechanism 3 move simultaneously toward the pipe, thereby bringing the end of the pipe fitting into contact with the end of the pipe for easy welding.

[0023] Reference Figure 5 As shown, the telescopic adjustment assembly 13 includes a first support 131 and a second support 132. The two ends of the first support 131 are respectively connected between the outer rods 1241 on both sides, and the two ends of the second support 132 are respectively connected between the inner rods 1242 on both sides. A retractable member 133 and an extendable member 134 are connected between the first support 131 and the second support 132. The extendable member 134 includes a hinge block 1341, which is rotatably mounted in the middle of the first support 131 and can drive the second support 132 to move away from the first support 131. A clamping piece 1342 for keeping the hinge block 1341 in a horizontal state is also provided on the first support 131. The retractable member 133 includes multiple tension springs 1331 provided on both sides of the hinge block 1341. One end of the tension spring 1331 is fixedly connected to the first support 131 and the other end is connected to the second support 132. By rotating the hinge block 1341 to a horizontal position and holding the hinge block 1341 in place with the clamping plate 1342, the end of the hinge block 1341 can hold the second support 132 away from the first support 131. When the clamping plate 1342 is disengaged from the hinge block 1341 and the hinge block 1341 is rotated upward, the second support 132 can be pulled closer to the first support 131 under the elastic force of the multiple tension springs 1331. The first support 131 has a notch in the middle, and the hinge block 1341 rotates in the notch. When the hinge block 1341 rotates to a horizontal position, it fits against the bottom wall of the notch. A sliding groove is provided on the first support 131 and on one side of the notch. The pressing plate 1342 is slidably connected in the sliding groove. The top of the pressing plate 1342 is provided with a lever 1343. The top of the sliding groove is provided with a strip groove for the lever 1343 to slide. The lever 1343 can be used to easily move the pressing plate 1342, which facilitates the pressing and releasing process of the hinge block 1341.

[0024] Reference Figure 2 , Figure 6As shown, a connecting block 321 is provided on one side of the positioning plate 32, and a connecting seat 311 is provided on the mounting rod 31. The connecting seat 311 has a slot for the connecting block 321 to be inserted. A positioning bolt 322 is threadedly connected to the connecting block 321. A through hole is provided on the connecting seat 311 for the positioning bolt 322 to pass through, and the through hole is connected to the slot. When installing the pipe fitting onto the clamping and positioning mechanism 3, the positioning plate 32 is removed from the mounting rod 31. This allows the worker to more easily install the pipe fitting onto the positioning plate 32 on the ground and secure it with the clamping component 33. Then, the connecting block 321 of the positioning plate 32 is inserted into the slot of the connecting seat 311, and the connecting block 321 is fixed with the positioning bolt 322. After welding, when the positioning plate 32 needs to be removed from the pipe fitting, the positioning bolt 322 is loosened, and the telescopic adjustment component 13 drives the moving clamping and positioning mechanism 3 to move away from the pipe. Then, the clamping component 33 is released from the pipe fitting, and the positioning plate 32 and the clamping component can be removed.

[0025] Reference Figure 2 , Figure 6 As shown, the mounting rod 31 is equipped with an anti-rotation pin 312, and the outer disc 21 has multiple pin holes distributed circumferentially for inserting the anti-rotation pin 312. At least four pin holes are provided. When extending the pipe in different directions (up, down, left, right), by inserting the anti-rotation pin 312 into the pin holes at different positions, the relative position of the inner disc 22 and the outer disc 21 can be changed, thereby adapting to the installation of pipe fittings facing different directions.

[0026] Reference Figure 6 , Figure 7 As shown, the clamping assembly 33 includes a clamping plate 331, a limiting screw 332, and multiple clamping rods 333. The multiple clamping rods 333 are all bent rods and are circumferentially distributed on the clamping plate 331. One end of the limiting screw 332 is fixedly mounted on the clamping plate 331, and the other end passes through the positioning plate 32 and extends outside the positioning plate 32. The end of the limiting screw 332 located outside the positioning plate 32 is threadedly connected to a limiting nut 334. A flexible clamping block 335 is provided on the side of the clamping rod 333 facing away from the limiting screw 332. The end of the elbow or tee fitting furthest from the pipe is attached to the clamping plate 331. Then, by tightening the limiting nut 334, the limiting screw 332 moves outward from the clamping plate 331. The limiting screw 332 drives the clamping plate 331 to move synchronously, causing multiple clamping rods 333 to bend simultaneously. When the clamping rods 333 bend to the designated position, the flexible clamping block 335 abuts against the inner wall of the fitting, thus achieving the positioning function of the fitting. By changing the position of the limiting screw 332, the bending rods can be bent to different states, thus adapting to different pipe diameters within a certain range. It can also be used to clamp reducing elbows or reducing tees.

[0027] Reference Figure 7As shown, the clamping rod 333 includes two hinged support rods 3331, one of which is rotatably connected to the clamping plate 331, and the other is rotatably connected to the positioning plate 32. The flexible clamping block 335 is fixedly mounted on one of the support rods 3331. Both support rods 3331 are made of rigid material and will not bend. When the limiting screw 332 moves the clamping plate 331, the angle between the two support rods 3331 can change, thereby causing the position of the flexible clamping block 335 to change, so as to clamp against the inner wall of the pipe and achieve the positioning function of the pipe.

[0028] Reference Figure 2 , Figure 8 As shown, a center positioning component 4 is provided at the center of the inner disk 22. The center positioning component 4 includes a center column 41 and a center seat 42. The center column 41 is slidably mounted on the inner disk 22, and the center seat 42 is rotatably mounted at the end of the center column 41 facing the pipe clamp. The center seat 42 has a threaded hole 421 that mates with the limiting screw 332. For pipe fittings such as reducing joints and pipe plugs that are concentric with the pipeline, after the pipe fitting is installed on the mounting base and positioned by the clamping component 33, the limiting screw 332 of the clamping component 33 is connected to the center positioning component 4 to keep the pipe fitting and the pipeline in a concentric state. During installation, keeping the position of the mounting base unchanged, rotating the center seat 42 will cause the limiting screw 332 to be threaded into the threaded hole 421, thereby fixing the position of the clamping component 33. The center seat 42 is a magnetic seat that can be attracted to the inner plate 22. When the center positioning component 4 is not used, the center column 41 is pulled away from the pipe, so that the center seat 42 moves to abut against the inner plate 22 and is attracted to the inner plate 22, thus making it easy to store the center positioning component 4.

[0029] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. 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 butt welding fixture for welding pipe fittings to pipes, characterized in that, include: The support mechanism (1) includes a clamping pipe clamp (11) and two support rods (12). The clamping pipe clamp (11) includes an upper pipe clamp (111) and a lower pipe clamp (112). The two support rods (12) are respectively connected to both sides of the upper pipe clamp (111). Mounting plate (2), the mounting plate (2) includes an outer plate (21) and an inner plate (22). The outer plate (21) is fixedly mounted on the end of the support rod (12) away from the clamping clamp (11) and is coaxial with the clamping clamp (11). The inner plate (22) is rotatably mounted inside the outer plate (21). The clamping and positioning mechanism (3) includes a mounting rod (31), a positioning plate (32), and a clamping component (33). The mounting rod (31) is fixedly mounted on the inner plate (22), and the positioning plate (32) is detachably mounted on the mounting rod (31). The clamping component (33) is located on the side of the positioning plate (32) facing the pipe. When the positioning plate (32) is installed on the mounting rod (31), one end of the pipe fitting abuts against the positioning plate (32), and the other end is concentric with the pipe. The clamping assembly (33) includes a clamping plate (331), a limiting screw (332), and multiple clamping rods (333). The multiple clamping rods (333) are all bent rods and are circumferentially distributed on the clamping plate (331). One end of the limiting screw (332) is fixedly mounted on the clamping plate (331), and the other end passes through the positioning plate (32) and extends to the outside of the positioning plate (32). The end of the limiting screw (332) located outside the positioning plate (32) is threadedly connected to a limiting nut (334). A flexible clamping block (335) is provided on the side of the clamping rod (333) facing away from the limiting screw (332).

2. The butt welding fixture for pipe fittings and pipelines according to claim 1, characterized in that, The clamping rod (333) includes two support rods (3331) that are hinged to each other. One of the support rods (3331) is rotatably connected to the clamping plate (331), and the other support rod (3331) is rotatably connected to the positioning plate (32). The flexible clamping block (335) is fixedly installed on one of the support rods (3331).

3. The butt welding fixture for pipe fittings and pipelines according to claim 1, characterized in that, A connecting block (321) is provided on one side of the positioning plate (32), and a connecting seat (311) is provided on the mounting rod (31). The connecting seat (311) has a slot for the connecting block (321) to be inserted into. A positioning bolt (322) is threaded onto the connecting block (321). The connecting seat (311) has a through hole for the positioning bolt (322) to pass through, and the through hole is connected to the slot.

4. The butt welding fixture for pipe fittings and pipelines according to claim 1, characterized in that, The support rod (12) includes a connecting section (121), a first horizontal section (122), an arc-shaped section (123), and a second horizontal section (124). Connecting ears (113) are provided on both sides of the upper pipe clamp (111). The connecting section (121) is fixedly installed on the connecting ears (113). The first horizontal section (122) is located at the bottom of the connecting section (121) and fits against the pipe support. The arc-shaped section (123) is located at the end of the first horizontal section (122) away from the connecting section (121) and extends downward at an angle. The second horizontal section (124) is located at the end of the arc-shaped section (123) away from the first horizontal section (122).

5. The butt welding fixture for pipe fittings and pipelines according to claim 4, characterized in that, The second horizontal section (124) includes an outer rod (1241) and an inner rod (1242). The inner rod (1242) is slidably disposed inside the outer rod (1241). A telescopic adjustment assembly (13) is provided between the two support rods (12) to drive the inner rods (1242) on both sides to move simultaneously toward or away from the outer rod (1241).

6. The butt welding fixture for pipe fittings and pipelines according to claim 5, characterized in that, The telescopic adjustment assembly (13) includes a first support (131) and a second support (132). The two ends of the first support (131) are respectively connected between the outer rods (1241) on both sides, and the two ends of the second support (132) are respectively connected between the inner rods (1242) on both sides. A retractable member (133) and an extendable member (134) are connected between the first support (131) and the second support (132).

7. The butt welding fixture for pipe fittings and pipelines according to claim 6, characterized in that, The protruding member (134) includes a hinge block (1341), which is rotatably disposed in the middle of the first support (131) and can drive the second support (132) to move away from the first support (131). The first support (131) is also provided with a clamping plate (1342) for keeping the hinge block (1341) in a horizontal state. The retracting member (133) includes multiple tension springs (1331) disposed on both sides of the hinge block (1341). One end of the tension spring (1331) is fixedly connected to the first support (131) and the other end is connected to the second support (132).

8. The butt welding fixture for pipe fittings and pipelines according to claim 1, characterized in that, A center positioning component (4) is provided at the center of the inner disk (22). The center positioning component (4) includes a center column (41) and a center seat (42). The center column (41) is slidably disposed on the inner disk (22). The center seat (42) is rotatably disposed at the end of the center column (41) facing the pipe clamp. A threaded hole (421) is provided on the center seat (42) to cooperate with the limiting screw (332).

9. The butt welding fixture for pipe fittings and pipelines according to claim 8, characterized in that, The central seat (42) is a magnetic seat that can attract the inner plate (22).

10. The butt welding fixture for pipe fittings and pipelines according to claim 1, characterized in that, The mounting rod (31) is provided with an anti-rotation pin (312), and the outer plate (21) has a plurality of pin holes distributed circumferentially for inserting the anti-rotation pin (312).

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