Inner supporting device for large-size circular ring

Abstract

The utility model discloses an inner supporting device for a large-size circular ring, which comprises a movable base, a gravity center adjusting structure mounted on the movable base, a lifting component mounted at the top of the movable base, a supporting power source mounted on the lifting component and an inner supporting central column mounted on the lifting component, the inner supporting assemblies are installed on the inner supporting center column and connected with the supporting power source, the connecting pieces are used for connecting the adjacent inner supporting assemblies, and the height monitoring assembly is installed on the inner supporting center column. The inner supporting assembly is driven by the supporting power source to move along the inner supporting center column, so that the inner supporting center column can be in contact with the inner wall of the circular ring, the inner wall of the circular ring is supported, the roundness of the circular ring during welding is guaranteed, a pulling plate does not need to be welded to the outer wall of the circular ring, and therefore the welding efficiency is improved on the premise that the welding effect is guaranteed. And the working process of welding and pulling plate removing by workers is simplified, the working intensity of the workers is reduced, and the attractiveness of equipment is improved.

Description

Technical Field

[0001] This utility model relates to the field of air separation equipment manufacturing technology, specifically to an inner support device for a large-sized circular ring. Background Technology

[0002] Air separation equipment uses air as raw material, transforming it into a liquid state through compression and deep freezing. Then, through distillation, it gradually separates oxygen, nitrogen, and inert gases such as argon from the liquid air. Air separation equipment is a large and complex system, comprising multiple subsystems including a power system, purification system, refrigeration system, heat exchange system, and distillation system.

[0003] In the current production of air separation equipment, due to the large size and weight of the equipment, and the fact that the welding quality of the air separation equipment is crucial to the safe use of the project, based on considerations such as manufacturing capability, transportation convenience, welding quality control, construction flexibility, and cost-effectiveness, the current practice is to first weld shorter rings, and then weld multiple shorter rings together to form a longer ring.

[0004] When welding multiple short rings, since the rings are generally made of magnesium-aluminum alloy, when the diameter of the ring is large, the weight of the ring itself and the supporting force of the bottom surface may cause elastic or plastic deformation of the ring material. In order to ensure convenient welding operation, enhance structural strength, and improve welding quality, multiple pull plates are welded on the ring wall away from the ground as positioning points before welding two rings together. Then, the upward pulling force of the ring is provided by equipment such as a crane to partially offset the weight of the ring. However, the pull plates need to be removed afterwards, which is very troublesome, and welding marks will remain after the pull plates are removed, affecting the appearance of the equipment.

[0005] Therefore, there is an urgent need for a welding aid that is easy to operate, does not require a welding pull plate as a positioning point, and helps to prevent deformation during the welding of large-sized circular rings and improve welding quality. Utility Model Content

[0006] The purpose of this invention is to provide an internal support device for large-sized circular rings, which solves the problem in the prior art that existing circular rings require welding pull plates before welding and then removing the pull plates after welding, which is very troublesome and leaves welding residues that affect the appearance of the equipment.

[0007] To achieve the above objectives, this utility model proposes an inner support device for a large-sized circular ring, comprising a movable base, a center of gravity adjustment structure mounted on the movable base, a lifting assembly mounted on the top of the movable base, a support power source mounted on the lifting assembly, an inner support center column mounted on the lifting assembly, multiple inner support components mounted on the inner support center column and connected to the support power source, a connector for connecting adjacent inner support components, and a height monitoring component mounted on the inner support center column; the support power source drives the inner support components to move along the inner support center column, so that the inner support components contact the inner surface of the circular ring for support.

[0008] Optionally, the mobile base includes a base plate, casters mounted on the bottom of the base plate, a support structure mounted on the base plate, a center of gravity adjustment structure, and a lifting assembly, all mounted on the base plate.

[0009] Optionally, the support structure includes a support electric cylinder mounted on the base plate, a support block mounted on the support electric cylinder, and an anti-slip block mounted on the support block facing the ground.

[0010] Optionally, the center of gravity adjustment structure includes at least one adjustment rod movably mounted on the base plate, a mounting block mounted on the adjustment rod, a counterweight on the mounting block, and a center of gravity adjustment electric cylinder mounted on the base plate; the base plate is provided with an adjustment groove adapted to the adjustment rod; a support structure and casters are also mounted on the mounting block.

[0011] Optionally, the lifting assembly includes a lifting motor mounted on the base plate, a hollow main rod mounted on the top of the base plate, a connecting plate movably mounted on the top of the hollow main rod, a lead screw with one end movably mounted on the connecting plate and the other end connected to the lifting motor, a lead screw nut mounted on the lead screw, a lifting rod mounted on the lead screw nut, an inner support center column mounted on the lifting rod, and a reinforcing column connected to the inner support center column mounted on the lifting rod; a support power source is mounted on the lifting rod.

[0012] Optionally, the internal support assembly includes a fixed component and a movable component fixedly mounted on the central column of the internal support, an internal support column movably mounted on the fixed component, a connecting lug fixedly mounted on the internal support column, and a power column with one end movably mounted on the movable component and the other end movably connected to the connecting lug; the support power source controls the movable component to move along the central column of the internal support; adjacent movable components are connected by multiple connecting components.

[0013] Optionally, the fastener includes a fixing ring fixedly installed on the support center column, a mounting plate 1 evenly spaced on the fixing ring, a through hole 1 provided on the mounting plate 1, and a connecting hoop 1 passing through all the through holes 1; one end of the inner support column is provided with a movable hole, which is movably connected to the connecting hoop 1, and the other end of the inner support column is provided with a rubber sleeve.

[0014] Optionally, the movable component includes a movable ring movably mounted on the support center column, a second mounting plate equally spaced on the movable ring, a second through hole on the second mounting plate, a second connecting hoop penetrating all the second through holes, and a connecting ring on the end of the movable ring facing the support power source.

[0015] Optionally, both ends of the power column are provided with rotating holes, which are movably connected to the connecting hoop and the connecting ear, respectively; multiple connecting parts are installed on the connecting ring at equal intervals.

[0016] Optionally, the connecting ear is located at the middle position of the inner support column, and the connecting ear is located between the fixed part and the movable part.

[0017] Optionally, the supporting power source includes a telescopic electric cylinder mounted on the lifting assembly; the height monitoring assembly consists of two infrared ranging sensors with opposite orientations, one infrared ranging sensor facing the ground and the other infrared ranging sensor away from the ground, the monitoring surfaces of the two infrared ranging sensors being located on the same plane, and the centerline of the inner support central column being located on the monitoring surface.

[0018] Compared with the prior art, this utility model provides an inner support device for large-sized circular rings, which has the following beneficial effects:

[0019] This invention relates to an internal support device for large-sized circular rings. A power source drives the internal support assembly to move along a central support column, allowing the central column to contact the inner wall of the ring and provide support. Combined with a height monitoring component, the height of the central support column can be monitored to ensure it is centered within the ring. After deployment, this device provides uniform support to the inner wall of the ring, ensuring its roundness during welding. Furthermore, it eliminates the need to weld pull plates onto the outer wall of the ring, thus simplifying the welding and pull plate removal process for workers while maintaining welding quality, reducing worker workload, and improving the aesthetics of the equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0021] Figure 2 This is a schematic diagram of the movable base and center of gravity adjustment structure of this utility model.

[0022] Figure 3 This is a utility model Figure 2 A magnified view of a portion of point A in the middle.

[0023] Figure 4 This is a structural schematic diagram of the lifting component of this utility model.

[0024] Figure 5This is a structural schematic diagram of the internal support component of this utility model.

[0025] Figure 6 This is a utility model Figure 5 A magnified view of a section at point B.

[0026] Figure 7 This is a structural schematic diagram of the support column of this utility model.

[0027] Figure 8 This is a schematic diagram of the structure of the power column of this utility model.

[0028] Figure 9 This is a structural schematic diagram of the movable component of this utility model.

[0029] Figure 10 This is a structural schematic diagram of the fastener of this utility model.

[0030] The diagram identifies the following components: 1. Movable base; 11. Base plate; 111. Adjustment groove; 12. Casters; 13. Support structure; 131. Support cylinder; 132. Support block; 133. Anti-slip block; 2. Center of gravity adjustment structure; 21. Adjustment rod; 22. Mounting block; 23. Counterweight block; 24. Center of gravity adjustment cylinder; 3. Lifting assembly; 31. Lifting motor; 32. Hollow main rod; 33. Connecting plate; 34. Lead screw; 35. Lead screw nut; 36. Lifting rod; 37. Reinforcing column; 4. Support power source. 41. Telescopic electric cylinder; 5. Inner support center column; 6. Inner support assembly; 61. Fixing component; 611. Fixing ring; 612. Mounting plate one; 613. Through hole one; 614. Connecting clamp one; 62. Moving component; 621. Moving ring; 622. Mounting plate two; 623. Through hole two; 624. Connecting clamp two; 625. Connecting ring; 63. Inner support column; 631. Movable hole; 64. Connecting ear; 65. Power column; 7. Connecting component; 8. Height monitoring assembly; 81. Infrared ranging sensor. Detailed Implementation

[0031] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, illustrates the present invention. Numerous specific details are set forth in the description below to provide a thorough understanding of the invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] The inner support device for large-sized rings proposed in this application can be applied to welding of medium-diameter large-sized rings in air separation equipment, and can also be used in other similar application scenarios. The following is a detailed description of an inner support device for large-sized rings.

[0033] See appendix Figure 1 — Figure 10 The diagram shows a preferred embodiment of an inner support device for a large-sized circular ring according to this application. The inner support device for the large-sized circular ring includes a movable base 1, a center-of-gravity adjustment structure 2 mounted on the movable base 1, a lifting assembly 3 mounted on the top of the movable base 1, a support power source 4 mounted on the lifting assembly 3, an inner support center column 5 mounted on the lifting assembly 3, multiple inner support components 6 mounted on the inner support center column 5 and connected to the support power source 4, connectors 7 for connecting adjacent inner support components 6, and a height monitoring component 8 mounted on the inner support center column 5.

[0034] This invention, through the movable base 1, allows the device to be moved, facilitating fine-tuning of the ring's position. This facilitates welding two rings and allows for position fixation after adjustment, preventing movement during welding and improving welding quality. The center-of-gravity adjustment structure 2 adjusts the device's center of gravity, preventing the device from tilting due to excessive ring weight and ensuring safety during use. The lifting assembly 3 adjusts the height of the inner support center column 5, thereby adjusting the height of the inner support assembly 6, making the inner support center column 5 suitable for rings of different sizes. The power source 4 serves as the power source for the inner support assembly 6, enabling it to expand and contract. The inner support center column 5 provides installation positions for the power source 4, the inner support assembly 6, and the height monitoring assembly 8. The connector 7 connects adjacent inner support assemblies 6, allowing one power source 4 to move all the inner support assemblies 6. The height monitoring assembly 8 monitors the height of the inner support center column 5, ensuring it is positioned at the center of the ring and guaranteeing the roundness of the ring after the inner support assembly 6 provides internal support, thus ensuring welding quality.

[0035] See appendix Figure 1 and Figure 2 As shown, in this utility model, the mobile base 1 includes a base plate 11, universal wheels 12 installed at the bottom of the base plate 11, a support structure 13 installed on the base plate 11, a center of gravity adjustment structure 2 and a lifting assembly 3, all of which are installed on the base plate 11.

[0036] This invention utilizes the universal wheels 12 to allow the entire device to move, adjust the position of the rings, and regulate the distance between the two rings, thereby improving welding quality. The support structure 13 is used to support the entire device, ensuring that the device does not move during the welding process, thus ensuring the welding effect.

[0037] See appendix Figure 1 — Figure 3 As shown, in this utility model, the support structure 13 includes a support electric cylinder 131 mounted on the base plate 11, a support block 132 mounted on the support electric cylinder 131, and an anti-slip block 133 mounted on the support block 132 facing the ground.

[0038] This utility model uses the electric cylinder 131 as a power source to drive the support block 132 to move up and down; the support block 132 is used to support the device, so that the caster wheel 12 is off the ground, ensuring the stability of the device during the welding process and ensuring that the ring will not move arbitrarily; the anti-slip block 133 increases the friction between the device and the ground, further preventing the device from moving.

[0039] See appendix Figure 1 and Figure 2 As shown, in this utility model, the center of gravity adjustment structure 2 includes at least one adjustment rod 21 movably mounted on the base plate 11, a mounting block 22 mounted on the adjustment rod 21, a counterweight block 23 on the mounting block 22, and a center of gravity adjustment electric cylinder 24 mounted on the base plate 11; wherein, the base plate 11 is provided with an adjustment groove 111 adapted to the adjustment rod 21; the mounting block 22 is also equipped with a support structure 13 and a caster wheel 12.

[0040] This invention, through the setting of the adjusting rod 21 and the coordination of the adjusting groove 111, allows the mounting block 22 to move along the direction of the adjusting rod 21, thereby adjusting the lever arm of the counterweight block 23, thus adjusting the center of gravity of the device and preventing one side of the device from tilting. The counterweight block 23 applies gravity to one end of the device, preventing tilting due to operational errors during the support of the ring. The center of gravity adjusting electric cylinder 24, acting as a power source, drives the mounting block 22 to move along the direction of the adjusting rod 21, thereby adjusting the position of the counterweight block 23. It should be noted that the maximum stroke of the center of gravity adjusting electric cylinder 24 is less than the length of the adjusting rod 21; that is, when the center of gravity adjusting electric cylinder 24 is at its maximum stroke, the adjusting rod 21 is located within the adjusting groove 111.

[0041] See appendix Figure 1 and Figure 4 As shown, in this utility model, the lifting assembly 3 includes a lifting motor 31 mounted on the base plate 11, a hollow main rod 32 mounted on the top of the base plate 11, a connecting plate 33 movably mounted on the top of the hollow main rod 32, a lead screw 34 movably mounted on the connecting plate 33 at one end and connected to the lifting motor 31 at the other end, a lead screw nut 35 mounted on the lead screw 34, a lifting rod 36 mounted on the lead screw nut 35, an inner support center column 5 mounted on the lifting rod 36, and a reinforcing column 37 connected to the inner support center column 5 mounted on the lifting rod 36; a support power source 4 is mounted on the lifting rod 36.

[0042] This invention utilizes a lifting motor 31 as a power source to drive the lead screw 34 to rotate, thereby causing the lifting rod 36 to move up and down. A connecting plate 33 secures one end of the lead screw 34, ensuring its stability during rotation and preventing wobbling. A lead screw nut 35 drives the lifting rod 36 to move up and down. A reinforcing column 37 strengthens the connection between the inner support center column 5 and the lifting rod 36, preventing the inner support center column 5 from breaking due to excessive weight.

[0043] See appendix Figure 5 — Figure 10 As shown, in this utility model, the inner support assembly 6 includes a fixing member 61 and a moving member 62 fixedly installed on the inner support central column 5, an inner support column 63 movably installed on the fixing member 61, a connecting ear 64 fixedly installed on the inner support column 63, and a power column 65 with one end movably installed on the moving member 62 and the other end movably connected to the connecting ear 64; wherein, the support power source 4 controls the moving member 62 to move along the inner support central column 5; adjacent moving members 62 are connected by multiple connecting members 7.

[0044] In this invention, the fixing member 61 fixes the relative position of one end of the inner support column 63 on the inner support center column 5, allowing the inner support column 63 to rotate only around the fixing member 61. When the inner support center column 5 is located at the center of the ring, the rotation of the inner support column 63 can contact the inner wall of the ring, supporting the inner wall and ensuring the roundness of the ring during welding. Furthermore, it is only necessary to ensure that the inner support center column 5 is at the center of the ring in its standard state; the range formed by the inner support column 63 during rotation is within the dimensions of the ring that can provide support. Therefore, in this application… An inner support column 63 of the same size can support a ring with a diameter within a specified range. The diameter range of the ring that can be supported can be changed by changing the length of the inner support column 63. With the setting of the movable part 62 and the support power source 4, it can move along the inner support center column 5, thereby driving the inner support column 63 to rotate and unfold around the fixed part 61, and contact and support the inner wall of the ring. With the setting of the connecting ear 64, the inner support column 63 and the power column 65 are movably connected. With the setting of the power column 65, the movement of the movable part 62 is transmitted, thereby driving the inner support column 63 to move.

[0045] See appendix Figure 10As shown, in this utility model, the fixing member 61 includes a fixing ring 611 fixedly installed on the inner support center column 5, a mounting plate 612 equally spaced on the fixing ring 611, a through hole 613 provided on the mounting plate 612, and a connecting hoop 614 passing through all the through holes 613; one end of the inner support column 63 is provided with a movable hole 631, which is movably connected to the connecting hoop 614. It should be noted that the other end of the inner support column 63 is provided with a rubber sleeve.

[0046] This invention utilizes a fixed ring 611 for connection to one end of the inner support column 63; through a through hole 613 and a movable hole 631 to avoid the connecting hoop 614, ensuring that one end of the inner support column 63 can be movably connected via the connecting hoop 614, allowing the inner support column 63 to rotate around the connecting hoop 614; it should be noted that both the connecting hoop 614 and the connecting hoop 624 are formed by connecting the ends of a single steel wire; the rubber sleeve protects the inner wall of the ring. When the inner support column 63 supports the ring at its end, the rubber sleeve contacts the inner wall of the ring, preventing scratches from the inner support column 63 on the inner wall of the ring, thus protecting the ring.

[0047] See appendix Figure 9 As shown, in this utility model, the movable component 62 includes a movable ring 621 movably mounted on the inner support center column 5, a second mounting plate 622 equally spaced on the movable ring 621, a second through hole 623 on the second mounting plate 622, a second connecting clamp 624 penetrating all the second through holes 623, and a connecting ring 625 on the end of the movable ring 621 facing the supporting power source 4; both ends of the power column 65 are provided with rotating holes, which are movably connected to the second connecting clamp 624 and the connecting ear 64 respectively; multiple connecting components 7 are equally spaced mounted on the connecting ring 625.

[0048] This invention features a movable ring 621 for movably connecting to one end of a power column 65, thereby moving the power column 65. A second through hole 623 secures a second connecting clamp 624, ensuring that the power column 65 moves along with the movable ring 621. A connecting ring 625 connects to a supporting power source 4, and together with a connecting piece 7, allows one supporting power source 4 to drive all the movable rings 621 to move.

[0049] See appendix Figure 5 — Figure 7 As shown, in this utility model, the connecting ear 64 is located at the middle position of the inner support column 63, and the connecting ear 64 is located between the fixing member 61 and the moving member 62.

[0050] This invention positions the connecting ear 64 at the middle of the inner support column 63, and with the connecting ear 64 located between the fixed member 61 and the movable member 62, it ensures that when the moving ring 621 moves, the moving ring 621 will push the power column 65 to move. The other end of the power column 65 is movably connected to the connecting ear 64, thus transmitting power to the inner support column 63. Since one end of the inner support column 63 can only rotate around the connecting hoop 614, when the moving ring 621 moves, the power column 65 will push the inner support column 63 to rotate, supporting the inner wall of the ring.

[0051] See appendix Figure 4 — Figure 6 As shown, in this utility model, the supporting power source 4 includes a telescopic electric cylinder 41 installed on the lifting assembly 3; the height monitoring assembly 8 consists of two infrared ranging sensors 81, which are oriented in opposite directions, with one infrared ranging sensor 81 facing the ground and the other infrared ranging sensor 81 away from the ground. The monitoring surfaces of the two infrared ranging sensors 81 are located on the same plane, and the center line of the inner supporting central column 5 is located on the monitoring surface.

[0052] This utility model uses an infrared ranging sensor 81 to detect the height of the inner support center column 5, ensuring that the inner support center column 5 is located at the center of the ring. It should be noted that the support cylinder 131, the center of gravity adjustment cylinder 24, the lifting motor 31, the telescopic cylinder 41, and the infrared ranging sensor 81 in this application are all connected to the controller.

[0053] See appendix Figure 1 — Figure 10 As shown, the working principle of this utility model is as follows:

[0054] The first step is to move the device to the location where the ring is placed, and then insert the inner support center column 5 into the ring. By observing whether the distance of the infrared distance sensor 81 changes, it is ensured that the inner support center column 5 of the device is parallel to the center line of the ring. The operator starts the lifting motor 31 through the controller and ensures that the inner support center column 5 is at the specified height through the infrared distance sensor 81.

[0055] In the second step, the operator controls the telescopic electric cylinder 41 to move via the controller. The telescopic electric cylinder 41 drives the connecting ring 625 connected to it to move. The connecting ring 625 drives the other connecting rings 625 to move via the connecting piece 7, so that all the moving rings 621 start to move, pushing the power column 65 to move, and then pushing the inner support column 63 to rotate. When the inner support column 63 is about to contact the inner wall of the ring, the operator controls the center of gravity adjustment electric cylinder 24 to start moving via the controller to adjust the center of gravity of the device.

[0056] Third step: When all the inner support columns 63 of an inner support component 6 come into contact with the inner wall of the ring, the worker stops the telescopic electric cylinder 41 by controlling the controller and controls the lifting motor 31 to continue working, driving the ring to rise a specified distance. At this time, the two rings that need to be welded are treated in the same way. The worker pushes the two devices to bring the two rings closer together. It should be noted that the two rings are already close together.

[0057] Fourth step: When the two rings are close together and the centers of the two rings are on the same straight line, the controller controls the support cylinder 131 to work so that the anti-slip block 133 is in close contact with the ground.

[0058] The above embodiments are illustrative of this application and are not intended to limit this application. Any simple modifications to this application are within the protection scope of this application.

Claims

1. An inner support device for a large-sized circular ring, characterized in that, Includes a movable base (1), a center of gravity adjustment structure (2) mounted on the movable base (1), a lifting assembly (3) mounted on the top of the movable base (1), a support power source (4) mounted on the lifting assembly (3), an inner support center column (5) mounted on the lifting assembly (3), multiple inner support assemblies (6) mounted on the inner support center column (5) and connected to the support power source (4), a connector (7) for connecting adjacent inner support assemblies (6), and a height monitoring assembly (8) mounted on the inner support center column (5). The supporting power source (4) drives the inner support component (6) to move along the inner support center column (5), so that the inner support component (6) contacts the inner surface of the ring for support.

2. The inner support device for a large-sized circular ring according to claim 1, characterized in that, The mobile base (1) includes a base plate (11), casters (12) installed at the bottom of the base plate (11), and a support structure (13) installed on the base plate (11). The center of gravity adjustment structure (2) and the lifting assembly (3) are both installed on the base plate (11).

3. The inner support device for a large-sized circular ring according to claim 2, characterized in that, The support structure (13) includes a support electric cylinder (131) mounted on the base plate (11), a support block (132) mounted on the support electric cylinder (131), and an anti-slip block (133) mounted on the support block (132) facing the ground.

4. The inner support device for a large-sized circular ring according to claim 2, characterized in that, The center of gravity adjustment structure (2) includes at least one adjustment rod (21) movably mounted on the base plate (11), a mounting block (22) mounted on the adjustment rod (21), a counterweight block (23) on the mounting block (22), and a center of gravity adjustment electric cylinder (24) mounted on the base plate (11). The base plate (11) is provided with an adjustment groove (111) that is compatible with the adjustment rod (21). The mounting block (22) is also equipped with a support structure (13) and casters (12).

5. The inner support device for a large-sized circular ring according to claim 2, characterized in that, The lifting assembly (3) includes a lifting motor (31) mounted on a base plate (11), a hollow main rod (32) mounted on the top of the base plate (11), a connecting plate (33) movably mounted on the top of the hollow main rod (32), a lead screw (34) movably mounted on the connecting plate (33) at one end and connected to the lifting motor (31) at the other end, a lead screw nut (35) mounted on the lead screw (34), a lifting rod (36) mounted on the lead screw nut (35), an inner support center column (5) mounted on the lifting rod (36), and a reinforcing column (37) connected to the inner support center column (5) mounted on the lifting rod (36). The supporting power source (4) is installed on the lifting rod (36).

6. The inner support device for a large-sized circular ring according to claim 1, characterized in that, The inner support assembly (6) includes a fixing member (61) and a moving member (62) fixedly installed on the inner support center column (5), an inner support column (63) movably installed on the fixing member (61), a connecting ear (64) fixedly installed on the inner support column (63), and a power column (65) with one end movably installed on the moving member (62) and the other end movably connected to the connecting ear (64). The supporting power source (4) controls the moving part (62) to move along the inner supporting central column (5); Adjacent moving parts (62) are connected by multiple connectors (7).

7. The inner support device for a large-sized circular ring according to claim 6, characterized in that, The fastener (61) includes a fixing ring (611) fixedly installed on the inner support center column (5), a mounting plate (612) evenly spaced on the fixing ring (611), a through hole (613) on the mounting plate (612), and a connecting hoop (614) penetrating all the through holes (613). The inner support column (63) has a movable hole (631) at one end, which is movably connected to the connecting hoop (614).

8. The inner support device for a large-sized circular ring according to claim 6, characterized in that, The movable component (62) includes a movable ring (621) movably mounted on the inner support center column (5), a second mounting plate (622) equally spaced on the movable ring (621), a second through hole (623) on the second mounting plate (622), a second connecting hoop (624) penetrating all the second through holes (623), and a connecting ring (625) on the end of the movable ring (621) facing the support power source (4). The power column (65) has rotating holes (651) at both ends, and is movably connected to the connecting hoop (624) and the connecting ear (64) respectively; multiple connecting parts (7) are installed at equal intervals on the connecting ring (625).

9. The inner support device for a large-sized circular ring according to claim 6, characterized in that, The connecting ear (64) is located in the middle of the inner support column (63), and the connecting ear (64) is located between the fixed part (61) and the movable part (62).

10. The inner support device for a large-sized circular ring according to claim 1, 5, or 6, characterized in that, The supporting power source (4) includes a telescopic electric cylinder (41) installed on the lifting assembly (3). The height monitoring component (8) consists of two infrared ranging sensors (81) with opposite orientations. One infrared ranging sensor (81) faces the ground, while the other infrared ranging sensor (81) is away from the ground. The monitoring surfaces of the two infrared ranging sensors (81) are on the same plane, and the center line of the inner support center column (5) is located on the monitoring surface.

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