Large-diameter corrugated pipe piece welding and fixing tool

Abstract

The utility model discloses a large-diameter corrugated pipe piece welding fixing tool which comprises a base, a driving mechanism and a main shaft, the driving mechanism and the main shaft are installed on the base, the upper end of the main shaft is connected with a lower disc, the main shaft is connected with the driving mechanism through a gear transmission mechanism, and an upper pressing disc is arranged above the lower disc. Corrugated duct pieces are stacked together, spacers are placed at intervals of two duct pieces, then an upper pressing disc is installed, a through hole in the upper pressing disc is aligned with a screw, a nut is screwed, the duct pieces are pressurized through the upper pressing disc, a driving mechanism drives a main shaft to rotate through a gear transmission mechanism, and the main shaft drives the upper pressing disc, a lower disc and the duct pieces to rotate. The pipe piece and an external welding gun rotate relatively to conduct welding to form the corrugated pipe, after welding is completed, the pipe body a and the pipe body b are correspondingly connected with a pump body and a pressure gauge respectively, after inflation pressurization and standing are conducted on the interior of the corrugated pipe, whether the pressure gauge leaks air or not is observed, the device combines the two processes of welding and sealing detection, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bellows, in particular to a welding and fixing tool for large-diameter bellows sheets. Background Art

[0002] Metal bellows are pipes with a regular, wavy appearance. Commonly used metal bellows include carbon steel, stainless steel, steel with plastic lining, and aluminum. They are primarily used for applications requiring a very small bend radius, non-concentric axial transmission, irregular turns and expansions, absorbing thermal deformation of pipes, and connecting pipes to other pipes or equipment where fixed elbows are inconvenient. When processing large-diameter bellows, circular welding of the segments is required, but the large number of segments makes fixed welding difficult. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a welding and fixing tool for large-diameter corrugated pipe segments.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A large-diameter corrugated pipe sheet welding and fixing tool includes a base and a driving mechanism and a main shaft installed thereon. The upper end of the main shaft is connected to a lower disc, and the main shaft is connected to the driving mechanism through a gear transmission mechanism. An upper pressure plate is arranged above the lower disc. The distance between the upper pressure plate and the lower disc is adjusted by a fastening mechanism. A sealing detection component is installed on the upper pressure plate.

[0006] Preferably, the fastening mechanism includes a plurality of screws connected to the lower disc, the plurality of screws are distributed in an annular pattern at equal angles, the upper pressure plate is provided with through holes corresponding to the screws, and the upper ends of the screws are threadedly connected to nuts.

[0007] Preferably, the sealing detection component includes a groove arranged at the bottom of the upper pressure plate, and the outer wall of the upper pressure plate is respectively provided with a tube body a and a tube body b, which are connected to the groove, and the tube body a and the tube body b are respectively connected to a pump body and a pressure gauge.

[0008] Preferably, the outer rings on opposite sides of the lower disc and the upper pressure plate are both provided with sealing rings.

[0009] Preferably, a sealing washer is provided on the screw rod, and the sealing washer is located between the nut and the upper pressure plate.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention stacks the corrugated pipe sheets together, places spacers between two pipe sheets, then installs the upper pressure plate, aligns the through hole on the upper pressure plate with the screw, and tightens the nut to pressurize the pipe sheet through the upper pressure plate. The driving mechanism drives the main shaft to rotate through the gear transmission mechanism, and the main shaft drives the upper pressure plate, the lower disc and the pipe sheet to rotate. The pipe sheet and the external welding gun rotate relative to each other to weld to form a bellows. After welding is completed, the pipe body a and the pipe body b are respectively connected to the pump body and the pressure gauge, and the inside of the bellows is inflated and pressurized. After standing, the pressure gauge is observed to see if there is any leakage. The device combines the two processes of welding and sealing detection, which greatly improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more specifically and intuitively illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0012] Figure 1 The structure of the utility model is shown in FIG. Figure 1 ;

[0013] Figure 2 The structure of the utility model is shown in FIG. Figure 2 ;

[0014] Figure 3 The structure of the utility model is shown in FIG. Figure 3 .

[0015] In the figure: base 1, drive mechanism 2, main shaft 3, lower disc 4, upper pressure plate 5, screw 6, nut 7, tube a8, tube b9, gear transmission mechanism 10, groove 11. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] Reference Figure 1-3 A large-diameter corrugated pipe sheet welding and fixing tool includes a base 1 and a driving mechanism 2 and a main shaft 3 installed thereon. The upper end of the main shaft 3 is connected to a lower disc 4, and the main shaft 3 is connected to the driving mechanism 2 through a gear transmission mechanism 10. An upper pressure plate 5 is arranged above the lower disc 4. The distance between the upper pressure plate 5 and the lower disc 4 is adjusted by a fastening mechanism, and a sealing detection component is installed on the upper pressure plate 5.

[0018] Stack the corrugated pipe segments together, place spacers between two segments, then install the upper pressure plate 5, align the through hole on the upper pressure plate 5 with the screw 6, and tighten the nut 7. Pressurize the pipe segment through the upper pressure plate 5. The driving mechanism 2 drives the main shaft 3 to rotate through the gear transmission mechanism 10. The main shaft 3 drives the upper pressure plate 5, the lower disc 4 and the pipe segment to rotate. The pipe segment and the external welding gun rotate relative to each other for welding to form a bellows. After welding is completed, the pipe body a8 and the pipe body b9 are respectively connected to the pump body and the pressure gauge, and the inside of the bellows is inflated and pressurized. After standing, observe whether the pressure gauge is leaking. The device combines the two processes of welding and sealing detection, which greatly improves production efficiency.

[0019] In this embodiment, the fastening mechanism includes several screws 6 connected to the lower disc 4, and the multiple screws 6 are distributed in an equiangular ring. The upper pressure plate 5 is provided with through holes corresponding to the screws 6, and the upper ends of the screws 6 are threadedly connected to nuts 7.

[0020] In this embodiment, the sealing detection component includes a groove 11 arranged at the bottom of the upper pressure plate 5, and the outer wall of the upper pressure plate 5 is respectively provided with a tube body a8 and a tube body b9, which are connected to the groove 11, and the tube body a8 and the tube body b9 are respectively connected to a pump body and a pressure gauge.

[0021] In this embodiment, the outer rings of the lower disc 4 and the upper pressure plate 5 on the opposite side are both provided with sealing rings, and a sealing gasket is provided on the screw 6. The sealing gasket is located between the nut 7 and the upper pressure plate 5 to improve its sealing performance.

[0022] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A large diameter corrugated pipe sheet welding fixture, comprising a base (1) and a drive mechanism (2) and a main shaft (3) mounted thereon, characterized in that: The upper end of the main shaft (3) is connected to a lower disc (4), and the main shaft (3) is connected to the driving mechanism (2) through a gear transmission mechanism (10). An upper pressure plate (5) is provided above the lower disc (4), and the spacing between the upper pressure plate (5) and the lower disc (4) is adjusted by a fastening mechanism. A sealing detection component is installed on the upper pressure plate (5).

2. The large diameter corrugated pipe segment welding and fixing tool according to claim 1, characterized in that: The fastening mechanism comprises a plurality of screw rods (6) connected to the lower disc (4), wherein the plurality of screw rods (6) are distributed in an annular manner at equal angles, and the upper pressure plate (5) is provided with through holes corresponding to the screw rods (6), and the upper ends of the screw rods (6) are threadedly connected to nuts (7).

3. The large diameter corrugated pipe segment welding and fixing tool according to claim 2, characterized in that: The sealing detection assembly comprises a groove (11) arranged at the bottom of the upper pressure plate (5), and the outer wall of the upper pressure plate (5) is provided with a tube body a (8) and a tube body b (9), respectively. The tube body a (8) and the tube body b (9) are connected to the groove (11), and the tube body a (8) and the tube body b (9) are respectively connected to a pump body and a pressure gauge.

4. The large diameter corrugated pipe segment welding and fixing tool according to claim 3, characterized in that: The outer rings on the opposite sides of the lower disc (4) and the upper pressure plate (5) are both provided with sealing rings.

5. The large diameter corrugated pipe segment welding and fixing tool according to claim 4, characterized in that: A sealing gasket is provided on the screw (6), and the sealing gasket is located between the nut (7) and the upper pressure plate (5).

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