A double wall welded corrugated pipe support device

Abstract

This application relates to a support device for a double-wall welded corrugated pipe, belonging to the field of corrugated pipe technology. It includes a support ring, outer support plates, inner support plates, a first driving mechanism, and a second driving mechanism. The outer diameter of the support ring is smaller than the inner diameter of the outer pipe, and the inner diameter of the support ring is larger than the outer diameter of the inner pipe. Multiple outer support plates are spaced apart on the outer side of the support ring. The first driving mechanism is mounted on the support ring and connected to the outer support plates, and is used to drive the multiple outer support plates to simultaneously move closer to or away from the support ring. Multiple inner support plates are spaced apart on the inner side of the support ring. The second driving mechanism is mounted on the support ring and connected to the inner support plates, and is used to drive the multiple inner support plates to simultaneously move closer to or away from the support ring. All the outer and inner support plates are concentrically arranged with the support ring. This application has the effect of facilitating the maintenance of the coaxiality of the inner and outer layers of the double-wall welded corrugated pipe.

Description

Technical Field

[0001] This application relates to the field of bellows technology, and in particular to a double-wall welded bellows support device. Background Technology

[0002] Double-wall corrugated pipes, also known as double-layer corrugated pipes, are currently widely used in high-end industries such as semiconductor equipment, vacuum equipment, pharmaceutical equipment, nuclear industry facilities, aerospace, photovoltaic industry, and accelerators. They possess advantages such as long service life, pressure resistance, high temperature resistance, and corrosion resistance, and have found wide application in numerous fields, showing a very promising future.

[0003] In actual use, multiple double-walled welded corrugated pipes are usually welded to be longer. However, since the corrugated pipe itself has a certain degree of elasticity, when the span is large, the middle part of the corrugated pipe may deform due to its own weight, making it difficult to maintain the coaxiality of the inner and outer layers. Summary of the Invention

[0004] In order to facilitate maintaining the coaxiality of the inner and outer layers of the double-wall welded corrugated pipe, this application provides a support device for the double-wall welded corrugated pipe.

[0005] The double-wall welded corrugated pipe support device provided in this application adopts the following technical solution.

[0006] A double-wall welded corrugated pipe support device includes a support ring, an outer support plate, an inner support plate, a first driving mechanism, and a second driving mechanism. The outer diameter of the support ring is smaller than the inner diameter of the outer pipe, and the inner diameter of the support ring is larger than the outer diameter of the inner pipe. Both the outer and inner support plates are arc-shaped plates. Multiple outer support plates are spaced apart on the outer side of the support ring. The first driving mechanism is mounted on the support ring and connected to the outer support plates, and is used to drive multiple outer support plates to simultaneously move closer to or away from the support ring. Multiple inner support plates are spaced apart on the inner side of the support ring. The second driving mechanism is mounted on the support ring and connected to the inner support plates, and is used to drive multiple inner support plates to simultaneously move closer to or away from the support ring. The outer and inner support plates are staggered on the support ring, and all of the multiple outer and inner support plates are concentrically arranged with the support ring.

[0007] Optionally, the first driving mechanism includes a first connecting rod and a first moving component. Multiple first connecting rods are provided and correspond one-to-one with multiple outer support plates. The outer support plate is located at one end of the first connecting rod located outside the support ring. The first connecting rod passes through the support ring along the diameter direction of the support ring. The first moving component is connected to multiple first connecting rods and is used to synchronously drive multiple first connecting rods to move.

[0008] Optionally, the first moving component includes a first toothed disc, a first bevel gear, a first limiting member, and a first rotating member. The first connecting rod is a threaded rod. The first bevel gear is threaded onto the first connecting rod and is rotatably disposed within a support ring. An annular mounting cavity is formed within the support ring. The first toothed disc is rotatably disposed on the support ring and located within the mounting cavity. The first toothed disc meshes with the first bevel gear. The first limiting member is disposed on the support ring and connected to the first connecting rod. The first limiting member ensures that the first connecting rod can only move in a straight line. The first rotating member is connected to the first toothed disc and is used to drive the first toothed disc to rotate.

[0009] Optionally, the second driving mechanism includes a second connecting rod and a second moving component. Multiple second connecting rods are provided and correspond one-to-one with multiple inner support plates. The inner support plate is located on one end of the second connecting rod located inside the support ring. Multiple second connecting rods pass through the support ring along the diameter direction of the support ring. The second moving component is connected to multiple second connecting rods and is used to synchronously drive multiple second connecting rods to move.

[0010] Optionally, the second moving component includes a second toothed disc, a second bevel gear, a second limiting member, and a second rotating member. The second connecting rod is also a threaded rod. The second bevel gear is threaded onto the second connecting rod and is rotatably disposed within the support ring. The second toothed disc is rotatably disposed on the support ring and located within the mounting cavity. The second toothed disc meshes with the second bevel gear. The second limiting member is disposed on the support ring and connected to the second connecting rod. The second limiting member ensures that the second connecting rod can only move in a straight line. The second rotating member is connected to the second toothed disc and is used to drive the second toothed disc to rotate.

[0011] Optionally, both the first limiting member and the second limiting member include a limiting block, and both the first connecting rod and the second connecting rod have limiting grooves. The limiting block is disposed inside the support ring and is adapted to the limiting groove.

[0012] Optionally, the first rotating component includes a first spur gear and a first countersunk bolt. The first spur gear is rotatably mounted on the support ring and located in the mounting cavity. A first rack that meshes with the first spur gear is arranged around the inner side of the first gear disk. The first rack meshes with the first spur gear. The shaft of the first spur gear extends outside the support ring, and the first countersunk bolt is mounted on the shaft of the first spur gear.

[0013] Optionally, the second rotating component includes a second spur gear and a second countersunk bolt. The second spur gear is rotatably mounted on the support ring and located within the mounting cavity. A second rack that meshes with the second spur gear is arranged around the outer side of the second gear disk. The shaft of the second spur gear extends outside the support ring, and the second countersunk bolt is mounted on the shaft of the second spur gear.

[0014] Optionally, a ball bearing is embedded in the support ring and on the side wall of the mounting cavity, and both the first and second toothed discs abut against the ball bearing.

[0015] Optionally, the inner side of the inner support plate is covered with a rubber layer, and the outer side of the outer support plate is also covered with a rubber layer.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. When welding and lengthening a double-walled welded corrugated pipe, a support ring is inserted from the end of the double-walled welded corrugated pipe between the outer and inner corrugated pipes. A first driving mechanism drives multiple outer support plates to move synchronously away from the support ring until the outer support plates contact the outer corrugated pipe. A second driving mechanism then drives multiple inner support plates to move synchronously away from the support ring until they contact the inner corrugated pipe. This coaxially supports the inner corrugated pipe within the outer corrugated pipe. After the double-walled welded corrugated pipe is subsequently lengthened, the support device ensures that the middle section of the double-walled welded corrugated pipe maintains good internal and external coaxiality.

[0018] 2. When driving multiple outer support plates to move synchronously, the first rotating component drives the first gear disk to rotate, and the first gear disk drives multiple first bevel gears that mesh with it to rotate synchronously. Since the first connecting rod is threadedly connected to the first bevel gear and the first connecting rod can only move in a straight line under the action of the first limiting component, multiple first connecting rods are driven to move synchronously, which facilitates the synchronous driving of multiple outer support plates to move closer to or away from the support ring.

[0019] 3. When driving multiple inner support plates to move synchronously, the second rotating component drives the second gear disk to rotate. The second gear disk drives multiple meshing second bevel gears to rotate synchronously. Since the second connecting rod is threadedly connected to the second bevel gear and can only move in a straight line under the action of the second limiting component, multiple second connecting rods are driven to move synchronously, which facilitates the synchronous driving of multiple inner support plates to move closer to or away from the support ring. Attached Figure Description

[0020] Figure 1 This is a front view of an embodiment of this application.

[0021] Figure 2 This is a schematic diagram used to illustrate the internal structure of the support ring in the embodiments of this application.

[0022] Figure 3 It is along Figure 1 A sectional view of aa.

[0023] Figure 4 It is along Figure 1 A sectional view of the middle section (bb).

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Support ring; 11. Mounting cavity; 12. Ball bearing; 2. Outer support plate; 21. First connecting rod; 3. Inner support plate; 31. Second connecting rod; 32. Rubber layer; 41. First gear plate; 411. First rack; 42. First bevel gear; 43. First spur gear; 44. First countersunk bolt; 51. Second gear plate; 511. Second rack; 52. Second bevel gear; 53. Second spur gear; 54. Second countersunk bolt; 6. Limiting block; 61. Limiting groove. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0027] This application discloses a double-wall welded corrugated pipe support device, referring to... Figure 1 A double-wall welded corrugated pipe support device includes a support ring 1, an outer support plate 2, an inner support plate 3, a first driving mechanism, and a second driving mechanism. The support ring 1 is a metal annular plate, with its outer diameter smaller than the inner diameter of the outer corrugated pipe and its inner diameter larger than the outer diameter of the inner corrugated pipe. Both the outer support plate 2 and the inner support plate 3 are arc-shaped plates. Multiple outer support plates 2 are installed at equal intervals on the outer side of the support ring 1. The first driving mechanism is mounted on the support ring 1 and connected to all the outer support plates 2, driving the multiple outer support plates 2 to simultaneously move closer to or away from the outer side of the support ring 1. Multiple inner support plates 3 are installed at equal intervals on the inner side of the support ring 1. The second driving mechanism is mounted on the support ring 1 and connected to all the inner support plates 3, driving the multiple inner support plates 3 to simultaneously move closer to or away from the inner side of the support ring 1. The multiple outer support plates 2 and the multiple inner support plates 3 are all concentrically arranged with the support ring 1.

[0028] When welding and lengthening a double-walled welded corrugated pipe, a support ring 1 is inserted from the end of the double-walled welded corrugated pipe between the outer and inner corrugated pipes. A first driving mechanism drives multiple outer support plates 2 to move synchronously away from the support ring 1 until the outer support plates 2 contact the outer corrugated pipe. A second driving mechanism then drives multiple inner support plates 3 to move synchronously away from the support ring 1 until they contact the inner corrugated pipe. This coaxially supports the inner corrugated pipe within the outer corrugated pipe. After subsequent lengthening of the double-walled welded corrugated pipe, the supporting device ensures that the middle section of the double-walled welded corrugated pipe maintains good internal and external coaxiality.

[0029] Reference Figure 1 and Figure 2 The first driving mechanism includes a first connecting rod 21 and a first moving component. Multiple first connecting rods 21 are provided on the support ring 1, and each first connecting rod 21 corresponds one-to-one with multiple outer support plates 2. The extension direction of each first connecting rod 21 passes through the center of the support ring 1. The outer support plates 2 are detachably mounted on the end of the first connecting rod 21 outside the support ring 1 by bolts, and the first connecting rod 21 slides through the support ring 1. The first moving component is connected to all the first connecting rods 21 and is used to synchronously drive the multiple first connecting rods 21 to move along the radial direction of the support ring 1, thereby driving the multiple outer support plates 2 to move synchronously. The multiple outer support plates 2 always remain on the same circle during movement. The second driving mechanism includes a second connecting rod 31 and a second moving assembly. Multiple second connecting rods 31 are mounted on the support ring 1, with each rod 31 having a radius coinciding with a radius of one of the supporting ring 1. Each connecting rod 31 corresponds to one of the inner support plates 3, and the inner support plates 3 are detachably connected to the end of each connecting rod 31 located inside the support ring 1 via threads. The second connecting rods 31 slide along the support ring 1. The second moving assembly is installed inside the support ring 1 and connected to all the connecting rods 31. The second moving assembly synchronously drives the multiple connecting rods 31 to move, thereby driving the multiple inner support plates 3 to move synchronously.

[0030] Reference Figure 2 and Figure 3The first moving component includes a first geared disc 41, a first bevel gear 42, a first limiting member, and a first rotating member. The first connecting rod 21 is a threaded rod. The first bevel gear 42 is coaxially threaded onto the first connecting rod 21. An annular mounting cavity 11 is formed within the support ring 1. A chamber communicating with the mounting cavity 11 and used to accommodate the first bevel gear 42 is also formed within the support ring 1. The first bevel gear 42 is rotatably mounted on the support ring 1 and located within the chamber. The first geared disc 41 is rotatably mounted on the support ring 1 and located outside the mounting cavity 11. The teeth on the first geared disc 41 are inclined and mesh with the first bevel gear 42. The first limiting member is provided on the support ring 1 and connected to the first connecting rod 21. The first limiting member ensures that the first connecting rod 21 can only move in a straight line, preventing rotation. The first rotating member is mounted on the support ring 1 and connected to the first geared disc 41, and is used to drive the first geared disc 41 to rotate.

[0031] When multiple outer support plates 2 are moved synchronously, the first rotating component drives the first gear disk 41 to rotate. The first gear disk 41 drives multiple first bevel gears 42 that mesh with it to rotate synchronously. Since the first connecting rod 21 is threadedly connected to the first bevel gear 42 and the first connecting rod 21 can only move in a straight line under the action of the first limiting component, multiple first connecting rods 21 are driven to move synchronously, thereby driving multiple outer support plates 2 to move closer to or away from the support ring 1 synchronously.

[0032] Reference Figure 2 and Figure 4 The second moving component includes a second geared disc 51, a second bevel gear 52, a second limiting member, and a second rotating member. The second connecting rod 31 is also a threaded rod. The second bevel gear 52 is coaxially threaded onto the second connecting rod 31. A cavity communicating with the mounting cavity 11 is also provided in the support ring 1 to accommodate the second bevel gear 52. The second bevel gear 52 is rotatably mounted on the support ring 1 and located within the cavity. The second geared disc 51 is rotatably mounted on the support ring 1 and located inside the mounting cavity 11. The teeth on the second geared disc 51 are also inclined and mesh with the second bevel gear 52. The second limiting member is provided on the support ring 1 and connected to the second connecting rod 31. The second limiting member ensures that the second connecting rod 31 can only move in a straight line, preventing the second connecting rod 31 from rotating. The second rotating member is mounted on the support ring 1 and connected to the second geared disc 51. The second rotating member is used to drive the second geared disc 51 to rotate.

[0033] When multiple inner support plates 3 are moved synchronously, the second rotating component drives the second gear disk 51 to rotate. The second gear disk 51 drives multiple second bevel gears 52 that mesh with it to rotate synchronously. Since the second connecting rod 31 is threadedly connected to the second bevel gear 52 and the second connecting rod 31 can only move in a straight line under the action of the second limiting component, multiple second connecting rods 31 are driven to move synchronously, thereby driving multiple inner support plates 3 to move closer to or away from the support ring 1 synchronously.

[0034] Reference Figure 3 and Figure 4 Both the first and second limiting components include limiting blocks 6. A limiting groove 61 extending along the length of the first connecting rod 21 is formed on the outer wall of the first connecting rod 21, and a limiting groove 61 extending along the length of the second connecting rod 31 is also formed on the outer wall of the second connecting rod 31. Multiple limiting blocks 6 are fixedly installed within the support ring 1, with each limiting block 6 corresponding to one limiting groove 61, and the limiting blocks 6 slidingly engaging with the limiting grooves 61. The limiting blocks 6 ensure that the first connecting rod 21 and the second connecting rod 31 can only move in a straight line, thus preventing rotation of the first connecting rod 21 and the second connecting rod 31 during movement.

[0035] Reference Figure 2 and Figure 3 The first rotating component includes a first spur gear 43 and a first countersunk bolt 44. The first spur gear 43 is rotatably mounted on the support ring 1 and located within the mounting cavity 11. The axis of the first spur gear 43 is parallel to the axis of the support ring 1. A first rack 411 meshing with the first spur gear 43 is arranged around the inner side of the first gear disk 41. The shaft of the first spur gear 43 extends outside the support ring 1, and the first countersunk bolt 44 is coaxially mounted on the shaft of the first spur gear 43. By rotating the first countersunk bolt 44 with a tool, the first spur gear 43 is driven to rotate, thereby driving the first gear disk 41 to rotate, achieving the effect of facilitating the rotation of the first gear disk 41.

[0036] Reference Figure 2 and Figure 4 The second rotating component includes a second spur gear 53 and a second countersunk bolt 54. The second spur gear 53 is rotatably mounted on the support ring 1 and located within the mounting cavity 11. The axis of the second spur gear 53 is parallel to the axis of the support ring 1. A second rack 511, meshing with the second spur gear 53, is arranged around the outer side of the second gear disk 51. The shaft of the second spur gear 53 extends outside the support ring 1, and the second countersunk bolt 54 is coaxially mounted on the shaft of the second spur gear 53. By rotating the second countersunk bolt 54 with a tool, the second spur gear 53 is driven to rotate, thereby driving the second gear disk 51 to rotate, achieving the effect of facilitating the rotation of the second gear disk 51.

[0037] Reference Figure 3 and Figure 4 Multiple ball bearings 12 are embedded in the support ring 1 and on the side wall of the mounting cavity 11. The first toothed disc 41 and the second toothed disc 51 both abut against the ball bearings 12. The ball bearings 12 convert the sliding friction between the first toothed disc 41, the second toothed disc 51 and the support ring 1 into rolling friction, reducing the frictional resistance of the first toothed disc 41 and the second toothed disc 51 during rotation, thus facilitating the rotation of the first toothed disc 41 and the second toothed disc 51. A rubber layer 32 is provided on the inner side of the inner support plate 3 and on the outer side of the outer support plate 2. The rubber layer 32 provides good cushioning when the inner support plate 3, the outer support plate 2, and the double-walled welded corrugated pipe come into contact.

[0038] The implementation principle of the double-wall welded corrugated pipe support device in this application embodiment is as follows: When welding and lengthening the double-wall welded corrugated pipe, a support ring 1 is inserted from the end of the double-wall welded corrugated pipe between the outer and inner corrugated pipes. A first driving mechanism drives multiple outer support plates 2 to move synchronously away from the support ring 1 until the multiple outer support plates 2 abut against the outer corrugated pipe. A second driving mechanism drives multiple inner support plates 3 to move synchronously away from the support ring 1 until the multiple inner support plates 3 abut against the inner corrugated pipe. Thus, the inner corrugated pipe is coaxially supported inside the outer corrugated pipe. After the double-wall welded corrugated pipe is lengthened, due to the function of the support device, the middle part of the double-wall welded corrugated pipe can always maintain good internal and external coaxiality.

[0039] Finally, it should be noted that in the description of this application, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-wall welded corrugated pipe support device, characterized in that: The system includes a support ring (1), an outer support plate (2), an inner support plate (3), a first drive mechanism, and a second drive mechanism. The outer diameter of the support ring (1) is smaller than the inner diameter of the outer tube, and the inner diameter of the support ring (1) is larger than the outer diameter of the inner tube. Both the outer support plate (2) and the inner support plate (3) are arc-shaped plates used to support the inner and outer corrugated pipes when the double-wall welded corrugated pipe is extended during welding. Multiple outer support plates (2) are spaced apart on the outside of the support ring (1). The first drive mechanism is mounted on the support ring (1) and connected to the outer support plate (2). The second driving mechanism is used to drive multiple outer support plates (2) to move closer to or further away from the support ring (1) at the same time; multiple inner support plates (3) are spaced apart on the inner side of the support ring (1); the second driving mechanism is set on the support ring (1) and connected to the inner support plates (3); the second driving mechanism is used to drive multiple inner support plates (3) to move closer to or further away from the support ring (1) at the same time; the outer support plates (2) and inner support plates (3) are staggered on the support ring (1); multiple outer support plates (2) and multiple inner support plates (3) are all concentrically set with the support ring (1); The first driving mechanism includes a first connecting rod (21) and a first moving component. There are multiple first connecting rods (21) and they correspond one-to-one with multiple outer support plates (2). The outer support plate (2) is located at one end of the first connecting rod (21) outside the support ring (1). The first connecting rod (21) passes through the support ring (1) along the diameter direction of the support ring (1). The first moving component is connected to multiple first connecting rods (21) and is used to synchronously drive multiple first connecting rods (21) to move. The first moving component includes a first toothed disc (41), a first bevel gear (42), a first limiting member, and a first rotating member. The first connecting rod (21) is a threaded rod. The first bevel gear (42) is threaded onto the first connecting rod (21) and is rotatably disposed within the support ring (1). An annular mounting cavity (11) is formed in the support ring (1). The first toothed disc (41) is rotatably disposed on the support ring (1) and located within the mounting cavity (11). The first toothed disc (41) meshes with the first bevel gear (42). The first limiting member is disposed on the support ring (1) and connected to the first connecting rod (21). The first limiting member allows the first connecting rod (21) to move only in a straight line. The first rotating member is connected to the first toothed disc (41) and is used to drive the first toothed disc (41) to rotate. The second driving mechanism includes a second connecting rod (31) and a second moving component. There are multiple second connecting rods (31) and they correspond one-to-one with multiple inner support plates (3). The inner support plate (3) is located on one end of the second connecting rod (31) inside the support ring (1). Multiple second connecting rods (31) pass through the support ring (1) along the diameter direction of the support ring (1). The second moving component is connected to multiple second connecting rods (31) and is used to synchronously drive multiple second connecting rods (31) to move. The second moving component includes a second gear (51), a second bevel gear (52), a second limiting member, and a second rotating member. The second connecting rod (31) is also a threaded rod. The second bevel gear (52) is threaded onto the second connecting rod (31) and is rotatably disposed within the support ring (1). The second gear (51) is rotatably disposed on the support ring (1) and located within the mounting cavity (11). The second gear (51) meshes with the second bevel gear (52). The second limiting member is disposed on the support ring (1) and connected to the second connecting rod (31). The second limiting member allows the second connecting rod (31) to move only in a straight line. The second rotating member is connected to the second gear (51) and is used to drive the second gear (51) to rotate. The first rotating component includes a first spur gear (43) and a first countersunk bolt (44). The first spur gear (43) is rotatably mounted on the support ring (1) and located in the mounting cavity (11). The inner side of the first gear disk (41) is surrounded by a first rack (411) that meshes with the first spur gear (43). The first rack (411) meshes with the first spur gear (43). The shaft of the first spur gear (43) extends to the outside of the support ring (1), and the first countersunk bolt (44) is mounted on the shaft of the first spur gear (43). The second rotating component includes a second spur gear (53) and a second countersunk bolt (54). The second spur gear (53) is rotatably mounted on the support ring (1) and located in the mounting cavity (11). A second rack (511) that meshes with the second spur gear (53) is arranged around the outer side of the second gear disk (51). The shaft of the second spur gear (53) extends outside the support ring (1), and the second countersunk bolt (54) is mounted on the shaft of the second spur gear (53).

2. The double-wall welded corrugated pipe support device according to claim 1, characterized in that: Both the first limiting member and the second limiting member include a limiting block (6). The first connecting rod (21) and the second connecting rod (31) are provided with limiting grooves (61). The limiting block (6) is disposed in the support ring (1) and is adapted to the limiting groove (61).

3. The double-wall welded corrugated pipe support device according to claim 1, characterized in that: A ball bearing (12) is embedded in the support ring (1) and on the side wall of the mounting cavity (11). The first toothed disc (41) and the second toothed disc (51) both abut against the ball bearing (12).

4. The double-wall welded corrugated pipe support device according to claim 1, characterized in that: The inner support plate (3) is covered with a rubber layer (32) on its inner side, and the outer support plate (2) is also covered with a rubber layer (32) on its outer side.

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