A butt joint device for pipe welding

Abstract

The utility model relates to pipeline welding technical field, and disclose a butt joint device for pipeline welding, including the bottom plate, the bottom plate bottom end four corners all weld fixedly have universal wheel, the bottom plate top end middle position department weld fixedly have the support frame, and the support frame is in "" Hui" character shape, limiting unit, the limiting unit is multiple groups, and multiple groups limiting unit set up in the bottom plate top, are used for limiting fixed to two groups of pipeline. Through the support frame cavity's multiple groups of guide bar and the clamping groove of slider two sides form the clamping assembly, make limiting unit can accurate sliding along the guide bar, be convenient for according to the pipeline length adjustment limiting unit spacing, adapt to the welding demand of different specifications pipeline, and the clamping assembly simple and reliable structure does not need complex drive component to be able to manual regulation, both reduce device manufacturing cost and maintenance difficulty, and can avoid limiting unit deviation through accurate guidance, further guarantee pipeline butt joint coaxial degree, prolong device service life simultaneously, improve overall practicality.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline welding, in particular to a butt joint device for pipeline welding. Background Art

[0002] Pipeline welding is a core construction link in petrochemical engineering, municipal water supply and drainage, natural gas transmission and other fields, and its welding quality directly determines the sealing performance, pressure resistance and service life of the pipeline system.

[0003] The existing butt joint device has poor adaptability and cannot flexibly adjust the spacing between clamping points. It can only adapt to pipelines with fixed lengths and pipe diameters. When facing pipelines of different specifications (such as variable-diameter pipelines and pipelines of different lengths), devices of different models need to be replaced, which increases construction costs and operation complexity. In addition, high-temperature welding slag generated during the welding process is easily scattered into the connecting gap between the fixed base and the clamping mechanism, and long-term accumulation will cause the adjustment screw to jam and the movement of the clamping mechanism to be blocked, which shortens the service life of the device and increases the difficulty of subsequent cleaning and maintenance.

[0004] To this end, the present application provides a butt joint device for pipeline welding. Utility model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a butt joint device for pipeline welding, which solves the problems raised in the above background art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solution: A butt joint device for pipeline welding, comprising: a bottom plate, universal wheels are welded and fixed at four corners of the bottom end of the bottom plate, and the bottom plate is horizontally placed on the ground through the universal wheels; a support frame is welded and fixed at the middle position of the top end of the bottom plate, and the support frame is in a shape of a square frame; multiple sets of limiting units, which are arranged above the bottom plate and used for limiting and fixing two groups of pipelines; the limiting unit comprises a mounting frame, a supporting plate and a limiting piece, and the limiting piece comprises a threaded rod and a hemispherical block; a clamping component is arranged between the limiting unit and the support frame, and the clamping component comprises a guiding part and a sliding part.

[0007] According to the butt joint device for pipeline welding, baffle plates are welded and fixed on the outer walls of both sides of the top end of the support frame, and the two groups of baffle plates are symmetrical around the support frame.

[0008] According to the butt joint device for pipeline welding, multiple groups of the limiting units are mutually parallel, and multiple groups of the limiting units are mutually perpendicular to the bottom plate.

[0009] According to the butt joint device for pipeline welding, the guiding part comprises guiding strips fixedly installed in the cavity of the support frame, there are multiple groups of guiding strips, and multiple groups of guiding strips are welded and fixed in the cavity of the support frame.

[0010] According to the pipe welding butt welding device, the sliding part includes a slider, which is movably engaged in the support frame cavity, and the number of sliders corresponds one-to-one with the mounting frame.

[0011] According to the pipe welding docking device, the slider has engagement grooves on the outer walls of both sides near the support frame at the positions of the corresponding guide bars. The number of engagement grooves corresponds one-to-one with the number of guide bars, and the slider engages with multiple sets of guide bars through the engagement grooves.

[0012] According to the pipe welding docking device, the two sides of the mounting frame are welded and fixed to the two sides of the corresponding slider, the support plate is fixedly installed in the mounting frame cavity, the support plate is located above the support frame and the baffle, and an arc-shaped groove is provided in the middle position of the support plate.

[0013] According to the pipe welding butt welding device, there are multiple sets of threaded rods. A threaded sleeve is embedded in the mounting frame at the position of the corresponding threaded rod. The threaded rod moves through the corresponding threaded sleeve and is fixedly connected to the hemispherical block. A handwheel is fixedly installed at the end of the threaded rod away from the mounting frame.

[0014] This utility model provides a butt welding device for pipes. It has the following advantages: (1) The base plate provides a rigid bearing foundation, and with the universal wheels with braking function, it can not only realize the flexible movement of the device and reduce the intensity of manual handling, but also lock the position of the device through braking, thus solving the contradiction between the convenience of movement and the stability of operation. At the same time, the support frame enhances the structural strength under the premise of lightweighting, providing a precise benchmark for the subsequent installation of components. The symmetrical baffles on both sides of the support frame can also block the impurities and slag generated by welding, preventing impurities from falling and affecting the sliding of components, and also facilitating later cleaning. From the basic structural level, it provides a guarantee for the stability of pipeline connection and the convenience of operation.

[0015] (2) By using multiple sets of parallel and perpendicular limiting units to the base plate, combined with the arc-shaped groove on the support plate that is compatible with the outer wall of the pipe, the pipe can be supported and initially positioned at multiple points to prevent the pipe from rolling and shifting. With the threaded connection structure of the threaded rod and the threaded sleeve, the operator can drive the flexible material hemispherical block to clamp the pipe by turning the handwheel. This can ensure the coaxiality of the pipe connection through multiple clamping points, and avoid rigid contact that could scratch the outer wall of the pipe. This solves the problem of easy displacement and damage of traditional pipe fixing, and provides core guarantee for welding accuracy.

[0016] (3) The locking assembly is formed by multiple sets of guide strips in the support frame cavity and the locking grooves on both sides of the slider, so that the limiting unit can slide precisely along the guide strip. This makes it easy to adjust the spacing of the limiting unit according to the length of the pipe, and adapt to the welding requirements of pipes of different specifications. Moreover, the locking assembly has a simple and reliable structure, and can be manually adjusted without complex drive components. This reduces the manufacturing cost and maintenance difficulty of the device, and can also prevent the limiting unit from shifting through precise guidance, further ensuring the coaxiality of the pipe connection, while extending the service life of the device and improving the overall practicality. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a pipe welding butt welding device according to the present invention; Figure 2 This is a front view schematic diagram of a pipe welding butt welding device according to the present invention; Figure 3 This is a top view schematic diagram of a pipe welding butt welding device according to the present invention; Figure 4 This is a cross-sectional schematic diagram of the support frame of a pipe welding butt welding device according to the present invention; Figure 5 This is a three-dimensional structural diagram of the limiting unit of a pipe welding butt welding device according to the present invention.

[0018] Legend: 10. Base plate; 11. Support frame; 12. Baffle; 13. Limiting unit; 14. Caster wheel; 15. Guide bar; 16. Slider; 17. Engaging groove; 18. Mounting frame; 19. Support plate; 20. Arc groove; 21. Threaded rod; 22. Handwheel; 23. Hemispherical block. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] Please see Figure 1-5As shown, the present utility model relates to a butt joint device for pipeline welding, comprising a bottom plate 10, universal wheels 14 are welded and fixed at four corners of the bottom end of the bottom plate 10. Through the universal wheels 14, the bottom plate 10 can not only be placed horizontally on the ground, but also can flexibly adjust the position of the device, which is convenient for quickly moving the device to a welding operation site. The bottom plate 10 is horizontally placed on the ground through the universal wheels 14; a support frame 11 is welded and fixed at the middle position of the top end of the bottom plate 10, and the support frame 11 is in a shape of a "hui" (closed loop); baffles 12 are welded and fixed on outer walls at both sides of the top end of the support frame 11, and the two groups of baffles 12 are in a symmetrical state around the support frame 11. By arranging the bottom plate 10, basic stability is provided for subsequent limiting and butting of pipelines, which avoids butt joint deviation caused by device shaking during welding operation. The support frame 11 is fixed on the bottom plate 10, which provides an accurate reference for subsequent component installation. By arranging the baffles 12 on both sides of the support frame 11, impurities and welding slag generated during welding can be blocked, which also facilitates later cleaning.

[0021] as Figure 1 and Figure 5 shown, the limiting units 13 are multiple groups, and the multiple groups of limiting units 13 are arranged above the bottom plate 10, and are used for limiting and fixing two groups of pipelines. The limiting units 13 are core components for ensuring the coaxiality of pipeline butt joint; the limiting unit 13 comprises a mounting frame 18, a support plate 19 and a limiting member, and the limiting member comprises a threaded rod 21 and a hemispherical block 23; the multiple groups of limiting units 13 are mutually parallel, and the multiple groups of limiting units 13 are mutually perpendicular to the bottom plate 10. This layout ensures that the fixing points of all the limiting units 13 for the pipeline are on the same straight line, so as to avoid bending and deviation of the pipeline. Both sides of the mounting frame 18 are welded and fixed to both sides of corresponding sliding blocks 16, the spacing of the limiting units 13 can be adjusted according to the length of the pipeline, the support plate 19 is fixedly installed in a cavity of the mounting frame 18, the support plate 19 is located above the support frame 11 and the baffles 12, and an arc-shaped groove 20 is arranged at the middle position of the support plate 19. There are multiple groups of threaded rods 21, threaded sleeves are embedded and installed at positions of the mounting frame 18 corresponding to the threaded rods 21, the threaded rods 21 movably penetrate through the corresponding threaded sleeves and are fixedly connected with the hemispherical blocks 23, and a hand wheel 22 is fixedly installed at one end of the threaded rod 21 away from the mounting frame 18. By arranging the support plate 19 installed in the cavity of the mounting frame 18, and arranging the arc-shaped groove 20 in the middle of the support plate 19, the arc-shaped groove 20 can increase the contact area with the pipeline, prevent the pipeline from rolling, and improve the support stability at the same time. The threaded rod 21 is in threaded connection with the threaded sleeve on the mounting frame 18, the movement of the threaded rod 21 drives the hemispherical block 23 at one end to move synchronously, an operator can drive the threaded rod 21 to move axially along the threaded sleeve by rotating the hand wheel 22, so as to clamp or loosen the pipeline. The hemispherical block 23 is made of flexible material, which can effectively avoid scratching the outer wall of the pipeline during clamping, enhance the friction with the pipeline, and improve the fixing effect.

[0022] as Figure 3-4As shown, a locking assembly is provided between the limiting unit 13 and the support frame 11. The locking assembly includes a guide portion and a sliding portion. The guide portion includes guide strips 15 fixedly installed inside the cavity of the support frame 11. There are multiple sets of guide strips 15, which are welded and fixed inside the cavity of the support frame 11. The sliding portion includes sliders 16, which are movably locked inside the cavity of the support frame 11. The number of sliders 16 corresponds one-to-one with the number of mounting frames 18. On the outer walls of the sliders 16 near the support frame 11, locking grooves 17 are formed at the positions corresponding to the guide strips 15. The number of locking grooves 17 corresponds one-to-one with the number of guide strips 15, and the sliders 16 are movably locked with the multiple sets of guide strips 15 through the locking grooves 17. By fixing multiple sets of guide bars 15 inside the cavity of the support frame 11, the slider 16 has engagement grooves 17 on the outer walls of both sides near the support frame 11 at the positions corresponding to the guide bars 15. The slider 16 engages with the multiple sets of guide bars 15 through the engagement grooves 17, thereby ensuring that the slider 16 always moves in the preset direction when it moves, avoiding the deviation of the limit unit 13 and causing the pipe coaxiality deviation. At the same time, the sliding stability is high, the engagement component structure is reliable, and manual adjustment can be achieved without complex drive components, reducing the manufacturing cost and maintenance difficulty of the device. The stability of the engagement structure also extends the service life of the device.

[0023] The implementation principle of the pipe welding butt joint device of this utility model is as follows: First, the operator moves the device to the designated position for pipe welding by pushing it with the casters 14 at the bottom of the base plate 10. Then, the braking function of the casters 14 is locked to prevent the device from shifting during operation. Next, according to the length of the pipe to be welded, the sliders 16 connected to both sides of the limiting unit 13 are pushed. The sliders 16 slide along the guide strips 15 in the cavity of the support frame 11 through the locking grooves 17 on both sides, adjusting the spacing between the multiple sets of limiting units 13 until the spacing matches the pipe length. Finally, the two sets of pipes to be welded are placed on the support plates 19 of the multiple sets of limiting units 13, so that the outer wall of the pipe fits the arc-shaped grooves 20 of the support plates 19. The coaxial positioning of the pipe is initially achieved by using the supporting effect of the arc-shaped grooves on the pipe.

[0024] Secondly, the operator rotates the handwheel 22 at the end of the threaded rod 21 on each set of limiting units 13. Since the threaded rod 21 is threadedly engaged with the threaded sleeve on the mounting frame 18, the rotation of the handwheel 22 will drive the threaded rod 21 to move axially along the threaded sleeve, thereby driving the hemispherical block 23 at the end of the threaded rod 21 to move closer to the pipeline. Until the hemispherical blocks 23 of multiple sets of limiting units 13 are in close contact with the outer wall of the pipeline, the flexible material of the hemispherical blocks 23 is used to avoid scratching the pipeline. At the same time, the clamping force of multiple sets of hemispherical blocks 23 fixes the position of the pipeline. Since multiple sets of limiting units 13 are parallel to each other and perpendicular to the base plate 10, it can be ensured that the two sets of pipelines to be welded are always in a coaxial state, thus completing the precise limiting and fixing of the pipeline.

[0025] Finally, after the pipe limit is completed, the operator can perform welding operations at the joint of the two sets of pipes. During the welding process, the baffles 12 on both sides of the top of the support frame 11 will block the impurities and slag generated during welding, preventing them from falling into the cavity of the support frame 11 and affecting the sliding of the slider 16. After the welding operation is completed, turn the handwheel 22 in the opposite direction to make the hemispherical block 23 disengage from the pipe, release the clamping state of the pipe, and then remove the welded pipe from the support plate 19. If the next set of pipes needs to be welded, repeat the above steps. If no further operation is required, unlock the caster wheel 14 and move the device to the storage position.

[0026] The above embodiments are preferred implementations of this utility model. In addition, this utility model can be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A butt welding device for pipe welding, characterized in that, Comprising: a bottom plate (10), wherein universal wheels (14) are welded and fixed at four corners of the bottom end of the bottom plate (10), and the bottom plate (10) is horizontally placed on the ground through the universal wheels (14); a support frame (11) welded and fixed at the middle position of the top end of the bottom plate (10), wherein the support frame (11) is in a shape of a "hollow square"; a limiting unit (13), wherein the limiting unit (13) is provided in multiple groups, and the multiple groups of limiting units (13) are arranged above the bottom plate (10) and used for limiting and fixing two groups of pipelines; the limiting unit (13) comprises a mounting frame (18), a supporting plate (19) and a limiting piece, and the limiting piece comprises a threaded rod (21) and a hemispherical block (23); a clamping assembly is arranged between the limiting unit (13) and the support frame (11), and the clamping assembly comprises a guide part and a sliding part.

2. The pipe welding butt welding device according to claim 1, characterized in that: baffle plates (12) are welded and fixed on outer walls of two sides of the top end of the support frame (11), and the two groups of baffle plates (12) are symmetrically arranged around the support frame (11).

3. The pipe welding butt welding device according to claim 1, characterized in that: the multiple groups of limiting units (13) are in a mutually parallel state, and the multiple groups of limiting units (13) are in a mutually perpendicular state with the bottom plate (10).

4. The pipe welding butt welding device according to claim 1, characterized in that: the guide part comprises guide strips (15) fixedly mounted in a cavity of the support frame (11), the guide strips (15) are provided in multiple groups, and the multiple groups of guide strips (15) are welded and fixed in the cavity of the support frame (11).

5. The pipe welding butt welding device according to claim 1, characterized in that: the sliding part comprises sliding blocks (16), the sliding blocks (16) are movably clamped in the cavity of the support frame (11), and the number of the sliding blocks (16) corresponds to that of the mounting frames (18) one to one.

6. The pipe welding butt welding device according to claim 5, characterized in that: clamping grooves (17) are formed on outer walls of two sides of the sliding block (16) close to the support frame (11) at positions corresponding to the guide strips (15), the number of the clamping grooves (17) corresponds to that of the guide strips (15) one to one, and the sliding block (16) is movably clamped with the multiple groups of guide strips (15) through the clamping grooves (17).

7. The pipe welding butt welding device according to claim 1, characterized in that: two sides of the mounting frame (18) are welded and fixed to two sides of the corresponding sliding block (16), the supporting plate (19) is fixedly mounted in the cavity of the mounting frame (18), the supporting plate (19) is located above the support frame (11) and the baffle plates (12), and an arc-shaped groove (20) is arranged at the middle position of the supporting plate (19).

8. The pipe welding butt welding device according to claim 1, characterized in that: the threaded rods (21) are provided in multiple groups, threaded sleeves are embedded and mounted at positions, corresponding to the threaded rods (21), of the mounting frame (18), the threaded rods (21) movably penetrate through the corresponding threaded sleeves and are fixedly connected with the hemispherical blocks (23), and a hand wheel (22) is fixedly mounted at one end, away from the mounting frame (18), of the threaded rods (21).

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