PE gas pipe butt joint clamp

Abstract

The utility model belongs to gas pipe construction technical field, and disclose a kind of PE gas pipe butt joint clamp, including four and being divided into two groups of moving seat, the pipe fixing structure for clamping PE gas pipe located above moving seat, and the butt joint structure for driving two groups of moving seat synchronous approach / away located below moving seat;The pipe fixing structure includes four and being divided into two groups of movable frame installed in the top of moving seat, movable plate slidingly connected in movable frame inner wall, and the meshing connection between gear and movable plate is engaged.This utility model's beneficial effects are: multi-section stable clamping, guarantee coaxiality: two groups of pipe fixing structure are carried out to single PE gas pipe two-end support, A fixed sleeve and B fixed sleeve close to form circular clamping cavity, and the abutting piece driven by screw rod is from radial clamping gas pipe, avoid tube body droop or deviation;While biaxial motor can be driven movable plate lifting by gear, accurately adjust gas pipe height.

Description

Technical Field

[0001] This utility model belongs to the field of gas pipe construction technology, specifically a PE gas pipe connection clamp. Background Technology

[0002] PE gas pipes, with their advantages of corrosion resistance and good flexibility, are widely used in urban gas transmission systems. The core process in their installation is butt welding. Currently, PE gas pipe butt welding mainly relies on hot-melt welding equipment. The ends of two gas pipes must first be aligned and fixed, and then welded using a hot-melt machine. However, existing butt welding auxiliary devices have significant drawbacks: Firstly, most devices only fix a single point at the butt joint, lacking support for the rest of the pipe body. This causes the gas pipe to sag or shift due to its own weight, resulting in coaxiality deviation at the butt joint and affecting the weld seal. Secondly, the port gap needs precise control before butt welding (usually 0.1-0.5mm) to ensure weld quality. Existing devices often rely on manual adjustment of the gap, which is prone to fluctuations. This leads to uneven heat distribution during welding, insufficient weld strength, and potential gas leaks, failing to meet the stringent construction safety standards for PE gas pipes. Utility Model Content

[0003] To address the problems mentioned in the background art, this utility model provides a PE gas pipe docking clamp, comprising four movable seats evenly divided into two groups, a pipe fixing structure located above the movable seats for clamping the PE gas pipe, and a docking structure located below the movable seats for driving the two groups of movable seats to move closer / away synchronously. The pipe fixing structure includes four movable frames, each divided into two groups, installed on the top of the movable base; movable plates slidably connected to the inner wall of the movable frames; and gears meshing with the movable plates. A dual-axis motor is fixedly installed between the two groups of movable frames, and the output end of the dual-axis motor is fixedly connected to two gears respectively. An arc-shaped A fixing sleeve is installed on the top of the movable plate, and an arc-shaped B fixing sleeve adapted to the A fixing sleeve is hinged to the top of the A fixing sleeve. After the A fixing sleeve and the B fixing sleeve are closed, a circular clamping cavity adapted to the outer diameter of the PE gas pipe is formed.

[0004] Preferably, both the A fixing sleeve and the B fixing sleeve have flange ears on their mating edges, and bolt holes are provided on the flange ears. The A fixing sleeve and the B fixing sleeve are fastened together by bolts passing through the bolt holes. The inner walls of both the A fixing sleeve and the B fixing sleeve are rotatably connected to screws in the radial direction, and the axis of the screws coincides with the radial direction of the circular clamping cavity.

[0005] Preferably, one end of the screw near the circular clamping cavity is rotatably connected to an arc-shaped abutment piece via a deep groove ball bearing, and a rubber anti-slip pad is attached to the inner wall of the abutment piece. The other end of the screw away from the abutment piece is fixedly connected to a hexagonal turntable.

[0006] Preferably, the docking structure includes a horizontally arranged base plate, a drive motor mounted on the right end of the base plate via a motor bracket, and a bidirectional threaded rod fixedly connected to the output end of the drive motor via a coupling. The two ends of the bidirectional threaded rod have opposite thread directions and are rotatably supported on both ends of the base plate via bearing seats.

[0007] Preferably, the upper surface of the base plate has two parallel sliding grooves along its length, and the cross-section of the sliding grooves is T-shaped; the bottom of the movable seat is provided with a T-shaped slider that matches the sliding groove, and the movable seat is slidably connected to the inner wall of the sliding groove through the T-shaped slider.

[0008] Preferably, the four movable seats are divided into two groups, with each group having two movable seats corresponding to a PE gas pipe; the inner walls of the two movable seats in the same group are provided with threaded holes adapted to the bidirectional threaded rod, and the two groups of movable seats are respectively engaged with the reverse threads at both ends of the bidirectional threaded rod; when the bidirectional threaded rod rotates, it can drive the two groups of movable seats to move synchronously towards the center or synchronously move away from both sides along the slide groove.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: Multi-stage stable clamping ensures coaxiality: Two sets of pipe fixing structures support the two ends of a single PE gas pipe. Fixing sleeve A and fixing sleeve B close to form a circular clamping cavity, which, together with the screw-driven abutment plate, clamps the gas pipe radially to prevent the pipe from sagging or shifting. At the same time, the dual-axis motor can drive the movable plate to lift and lower through gears, precisely adjusting the height of the gas pipe to ensure the coaxiality of the two gas pipe joints, meeting the stringent coaxiality requirements of PE gas pipe welding.

[0010] Synchronous gap adjustment improves welding quality: In the butt joint structure, the reverse threads at both ends of the bidirectional threaded rod mesh with two sets of moving seats. When the drive motor drives the bidirectional threaded rod to rotate, the two sets of moving seats can move closer / away synchronously along the slide groove, realizing precise control of the gap between the two gas pipe ports, avoiding gap fluctuations caused by manual adjustment, ensuring uniform heat distribution and dense weld filling during fusion welding, improving weld strength and sealing, and reducing the risk of gas leakage. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 Enlarged view of a portion of point A in the middle; Figure 3 This is a schematic diagram of the fixing structure of this utility model; Figure 4 This is a front view of the present utility model; Figure 5 This is a schematic diagram of the movable base, fixed sleeve A, and fixed sleeve B of this utility model. Figure 6This is a schematic diagram of the overall structure of the base plate of this utility model.

[0012] In the diagram: 1. Movable seat; 2. Fixed structure; 21. Movable frame; 22. Movable plate; 23. Gear; 24. Dual-axis motor; 25. A fixed sleeve; 26. B fixed sleeve; 27. Screw; 28. Abutment piece; 29. ​​Turntable; 3. Connecting structure; 31. Base plate; 32. Drive motor; 33. Bidirectional threaded rod; 34. Slide groove. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] like Figures 1 to 6 As shown, this utility model provides a PE gas pipe docking clamp, including four movable seats 1 evenly divided into two groups, a pipe fixing structure 2 located above the movable seats 1 for clamping the PE gas pipe, and a docking structure 3 located below the movable seats 1 for driving the two groups of movable seats 1 to move closer / away synchronously. The pipe fixing structure 2 includes four movable frames 21, each divided into two groups, installed on the top of the movable base 1; movable plates 22 slidably connected to the inner wall of the movable frames 21; and gears 23 meshing with the movable plates 22. A dual-axis motor 24 is fixedly installed between the two groups of movable frames 21, and the output end of the dual-axis motor 24 is fixedly connected to the two gears 23 respectively. An arc-shaped A fixing sleeve 25 is installed on the top of the movable plate 22. An arc-shaped B fixing sleeve 26 that matches the A fixing sleeve 25 is hinged to the top of the A fixing sleeve 25. After the A fixing sleeve 25 and the B fixing sleeve 26 are closed, a circular clamping cavity that matches the outer diameter of the PE gas pipe is formed.

[0015] The above solution is adopted as follows: two sets of pipe fixing structures 2 support the two ends of a single PE gas pipe to prevent the pipe from sagging and shifting; the circular clamping cavity formed by fixing sleeve A 25 and fixing sleeve B 26 cooperates with the abutment piece 28 to achieve stable clamping of the gas pipe; the dual-axis motor 24 drives the movable plate 22 to rise and fall, which can accurately adjust the height of the gas pipe and ensure the coaxiality of the docking port; the bidirectional threaded rod 33 in the docking structure 3 drives the two sets of moving seats 1 to move synchronously, which can accurately control the port gap and meet the welding quality requirements of PE gas pipe.

[0016] like Figures 1 to 6As shown, both the A fixing sleeve 25 and the B fixing sleeve 26 have flange ears on their mating edges, and bolt holes are provided on the flange ears. The A fixing sleeve 25 and the B fixing sleeve 26 are fastened together by bolts passing through the bolt holes. The inner walls of both the A fixing sleeve 25 and the B fixing sleeve 26 are rotatably connected to screws 27 in the radial direction, and the axis of the screws 27 coincides with the radial direction of the circular clamping cavity.

[0017] The above scheme is adopted: the cooperation between the flange lug and the bolt enables the quick opening and closing and fastening of the A fixing sleeve 25 and the B fixing sleeve 26, which facilitates the installation and removal of the gas pipe; the screw 27 is arranged radially along the circular clamping cavity to ensure that the clamping force of the abutment piece 28 on the gas pipe is applied radially, avoiding the gas pipe from being deflected by force and improving the clamping stability.

[0018] like Figures 1 to 6 As shown, one end of the screw 27 near the circular clamping cavity is rotatably connected to an arc-shaped abutment piece 28 via a deep groove ball bearing. The inner wall of the abutment piece 28 is covered with a rubber anti-slip pad. The other end of the screw 27 away from the abutment piece 28 is fixedly connected to a hexagonal turntable 29.

[0019] The above solution is adopted: the arc-shaped abutment piece 28 fits the outer wall of the PE gas pipe better, increases the contact area to disperse the clamping force and avoid damage to the pipe body; the rubber anti-slip pad can increase friction and prevent the gas pipe from slipping during the connection process; the hexagonal turntable 29 makes it easy to use a wrench to assist in rotation, saves manpower, and avoids slippage when rotating manually.

[0020] like Figures 1 to 6 As shown, the docking structure 3 includes a horizontally arranged base plate 31, a drive motor 32 mounted on the right end of the base plate 31 via a motor bracket, and a bidirectional threaded rod 33 fixedly connected to the output end of the drive motor 32 via a coupling. The two ends of the bidirectional threaded rod 33 have opposite thread directions and are rotatably supported on both ends of the base plate 31 via bearing seats.

[0021] The above scheme is adopted: the drive motor 32 provides stable power to the bidirectional threaded rod 33, the coupling can compensate for installation errors and ensure the stability of power transmission; the reverse threads at both ends of the bidirectional threaded rod 33 are the core to realize the synchronous reverse movement of the two sets of moving seats 1, and the bearing seat ensures the coaxiality of the bidirectional threaded rod 33 when rotating, and avoids the impact of rod body shaking on the gap adjustment accuracy.

[0022] like Figures 1 to 6 As shown, the upper surface of the base plate 31 has two parallel sliding grooves 34 along the length direction, and the cross section of the sliding grooves 34 is T-shaped; the bottom of the movable seat 1 is provided with a T-shaped slider that matches the sliding grooves 34, and the movable seat 1 is slidably connected to the inner wall of the sliding grooves 34 through the T-shaped slider.

[0023] The above scheme is adopted: the cooperation between the T-shaped slide and the slider can limit the vertical displacement of the moving seat 1, prevent the moving seat 1 from tilting during the sliding process, and ensure that the moving seat 1 always moves in the horizontal direction; the two parallel slides 34 further improve the sliding stability of the moving seat 1, prevent the moving seat 1 from deflecting, and ensure the straightness when the gas pipe is connected.

[0024] like Figures 1 to 6 As shown, the four movable seats 1 are divided into two groups, with each group of two movable seats 1 corresponding to a PE gas pipe; the inner walls of the two movable seats 1 in the same group are provided with threaded holes that are compatible with the bidirectional threaded rod 33, and the two groups of movable seats 1 respectively engage with the reverse threads at both ends of the bidirectional threaded rod 33; when the bidirectional threaded rod 33 rotates, it can drive the two groups of movable seats 1 to move synchronously towards the center or move synchronously away from both sides along the slide groove 34.

[0025] The above scheme is adopted: each group of two moving seats 1 forms two-point support for a single gas pipe, improving the stability of the pipe body; the two groups of moving seats 1 engage with the bidirectional threaded rod 33 in opposite directions, ensuring that when the bidirectional threaded rod 33 rotates, the moving speed and displacement of the two groups of moving seats 1 are completely consistent, realizing the synchronous alignment of the two gas pipe ports, accurately controlling the gap size, and avoiding docking deviation caused by unilateral offset.

[0026] Working principle of this utility model

[0027] Fixture assembly and gas pipe placement: Place the base plate 31 horizontally on the construction ground and ensure that the slide groove 34 is free of debris; open the B fixing sleeve 26 on the top of the two sets of A fixing sleeves 25, and place the two PE gas pipes to be connected into the A fixing sleeves 25 above the two sets of moving seats 1, so that the gas pipe connection ports face the center of the fixture.

[0028] Gas pipe clamping and fixing: Close the B fixing sleeve 26, pass the bolt through the bolt holes of the flange ears of the A fixing sleeve 25 and the B fixing sleeve 26 and tighten them to initially fix the gas pipe; use a wrench to turn the turntable 29, drive the screw 27 to rotate, and make the abutment piece 28 move towards the outer wall of the gas pipe until the rubber anti-slip pad is tightly attached to the gas pipe, thus completing the stable clamping of the gas pipe.

[0029] Gas pipe height adjustment: According to the docking height requirements of the PE gas pipe hot melt machine, start the dual-axis motor 24. The dual-axis motor 24 drives the gear 23 to rotate. The gear 23 meshes with the movable plate 22 to drive the movable plate 22 to rise and fall along the inner wall of the movable frame 21 until the axis of the gas pipe coincides with the docking axis of the hot melt machine. Then turn off the dual-axis motor 24.

[0030] Adjusting the gap and preparing for welding: Start the drive motor 32. The drive motor 32 drives the bidirectional threaded rod 33 to rotate. Under the action of the reverse threads of the bidirectional threaded rod 33, the two sets of moving seats 1 move synchronously towards the center along the slide groove 34. Observe the gap at the gas pipe end through the gap detection device built into the hot melt machine. When the gap reaches the standard requirement of 0.1-0.5mm, turn off the drive motor 32 to complete the gap adjustment. Then, the hot melt machine can be started to perform PE gas pipe welding.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PE gas pipe connection clamp, characterized in that: It includes four movable seats (1) that are divided into two groups, a pipe fixing structure (2) located above the movable seats (1) for clamping the PE gas pipe, and a docking structure (3) located below the movable seats (1) for driving the two groups of movable seats (1) to move closer / away synchronously. The pipe fixing structure (2) includes four movable frames (21) installed on the top of the movable seat (1) and divided into two groups, movable plates (22) slidably connected to the inner wall of the movable frames (21), and gears (23) meshing with the movable plates (22). A dual-axis motor (24) is fixedly installed between the two groups of movable frames (21), and the output end of the dual-axis motor (24) is fixedly connected to the two gears (23) respectively. An arc-shaped A fixing sleeve (25) is installed on the top of the movable plate (22). An arc-shaped B fixing sleeve (26) adapted to the A fixing sleeve (25) is hinged to the top of the A fixing sleeve (25). After the A fixing sleeve (25) and the B fixing sleeve (26) are closed, a circular clamping cavity adapted to the outer diameter of the PE gas pipe is formed.

2. The PE gas pipe connection clamp according to claim 1, characterized in that: The fitting edges of the A fixing sleeve (25) and the B fixing sleeve (26) are provided with flange ears, and bolt holes are provided on the flange ears. The A fixing sleeve (25) and the B fixing sleeve (26) are fastened together by bolts passing through the bolt holes. The inner walls of the A fixing sleeve (25) and the B fixing sleeve (26) are both radially rotatably connected with screws (27), and the axis of the screws (27) coincides with the radial direction of the circular clamping cavity.

3. A PE gas pipe connection clamp according to claim 2, characterized in that: The screw (27) is rotatably connected to an arc-shaped abutment piece (28) at one end near the circular clamping cavity via a deep groove ball bearing. A rubber anti-slip pad is pasted on the inner wall of the abutment piece (28). A hexagonal turntable (29) is fixedly connected to the other end of the screw (27) away from the abutment piece (28).

4. A PE gas pipe connection clamp according to claim 1, characterized in that: The docking structure (3) includes a horizontally set base plate (31), a drive motor (32) mounted on the right end of the base plate (31) via a motor bracket, and a bidirectional threaded rod (33) fixedly connected to the output end of the drive motor (32) via a coupling. The two ends of the bidirectional threaded rod (33) have opposite thread directions and are rotatably supported on both ends of the base plate (31) via bearing seats.

5. A PE gas pipe connection clamp according to claim 4, characterized in that: The upper surface of the base plate (31) is provided with two parallel sliding grooves (34) along the length direction. The cross section of the sliding grooves (34) is T-shaped. The bottom of the movable seat (1) is provided with a T-shaped slider that is adapted to the sliding grooves (34). The movable seat (1) is slidably connected to the inner wall of the sliding grooves (34) through the T-shaped slider.

6. A PE gas pipe connection clamp according to claim 4, characterized in that: The four movable seats (1) are divided into two groups, with each group of two movable seats (1) corresponding to a PE gas pipe; the inner walls of the two movable seats (1) in the same group are provided with threaded holes that are compatible with the bidirectional threaded rod (33), and the two groups of movable seats (1) are respectively engaged with the reverse threads at both ends of the bidirectional threaded rod (33); when the bidirectional threaded rod (33) rotates, it can drive the two groups of movable seats (1) to move towards the center synchronously or move away from both sides synchronously along the slide groove (34).

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