Flange supporting and protecting integrated device

Abstract

The invention provides a flange supporting and protecting integrated device which comprises a flange body, mounting holes are formed in the surface of the flange body at equal intervals, a clamping assembly is arranged on the diameter line of the flange body and comprises inner clamping frames, and the inner clamping frames are symmetrically arranged on the two sides of the inner ring of the flange body; an inner clamping frame is arranged on the flange body, an outer clamping frame is arranged on the outer side, corresponding to the inner clamping frame, of the flange body, the inner clamping frame and the outer clamping frame wrap the surface of the flange body, transverse plates are fixed to the top of the inner clamping frame, a first screw cylinder is arranged between the two transverse plates, and a first adjusting screw rod is inserted into the end, facing the first screw cylinder, of each transverse plate in a threaded mode. The clamping assemblies are fixed to the inner surface and the outer surface of the diameter of the flange body, the clamping positions are protected, the transverse plate and the storage plate are connected through the connecting assemblies, adjustment is conducted according to flanges of different diameters, and the clamping assemblies and the connecting assemblies are connected conveniently and rapidly.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flange protection support, in particular to a flange support and protection integrated device. BACKGROUND

[0002] During the placement of a relatively large flange, the cylinder body is prone to deformation. Usually, when placing or transporting the flange, a rice-shaped support rod is placed inside the flange. The rice-shaped support rod is usually composed of a horizontal rod, a vertical rod and an inclined rod, and the central parts of the horizontal rod, the vertical rod and the inclined rod are fixedly connected and placed inside the flange to support the flange.

[0003] In the prior art, the flange support and protection method needs to use multiple bolts for locking, which is relatively cumbersome, and the adjustment applicability for different flanges is poor. During the transportation of the flange, the protection ability of the flange itself is low, and the flange is prone to be bumped. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application aims to provide a flange support and protection integrated device to solve the problems raised in the background art. The present application has a novel structure. The clamping assembly is fixed on the inner and outer surfaces of the flange body, and the position of the clamping is protected. The connecting assembly connects the horizontal plate and the storage plate. The flange of different diameters is adjusted. When the clamping assembly and the connecting assembly are connected, it is more convenient.

[0005] In order to achieve the above-mentioned purpose, the present application is realized by the following technical scheme: a flange support and protection integrated device, comprising a flange body, a plurality of installation holes are equidistantly arranged on the surface of the flange body, a clamping assembly is arranged on the diameter line of the flange body, the clamping assembly comprises an inner clamping frame, two inner clamping frames are symmetrically arranged on the both sides of the inner ring of the flange body, and an outer clamping frame is arranged on the outer side of the flange body corresponding to the inner clamping frame, the inner clamping frame and the outer clamping frame are wrapped on the surface of the flange body, a horizontal plate is fixed to the top of the inner clamping frame, a first screw cylinder is arranged between the two horizontal plates, a first adjusting screw is threadedly inserted into one end of the horizontal plate facing the first screw cylinder, and the other end of the first adjusting screw is threadedly inserted into the first screw cylinder, storage plates are arranged on the both sides of the horizontal plate, a connecting assembly is arranged on the surface of the storage plate, the connecting assembly comprises a plug plate, the plug plate is slidably inserted into the both ends of the top of the storage plate, and a first connecting rod is rotatably connected to one end of the plug plate facing the first screw cylinder through a rotating shaft.

[0006] Further, two connecting blocks are symmetrically mounted on the surface of the receiving plate, and a connecting block is rotatably mounted on the middle surface of the horizontal plate, and a second screw cylinder is arranged between the connecting block on the receiving plate and the connecting block of the horizontal plate, one end of the second screw cylinder is threadedly inserted with a second adjusting screw, and the second adjusting screw is rotatably connected with the connecting block of the receiving plate through a bearing, the other end of the second screw cylinder is threadedly inserted with a third adjusting screw, and the other end of the third adjusting screw is rotatably connected with the connecting block of the horizontal plate through a bearing.

[0007] Further, the two ends of the receiving plate are threadedly inserted with fixing bolts, and the two ends of the receiving plate are slidably inserted with extension plates, and the fixing bolts are in extrusion contact with the extension plates.

[0008] Further, the connecting assembly further comprises a bottom plate, the middle bottom of the first screw cylinder is fixed with a bottom plate, and the two ends of the bottom plate are slidably inserted with moving plates, the two moving plates are staggered and pass through the two ends of the bottom plate, and one end of the moving plate passes through a rotating shaft and is rotatably connected with the two first connecting rods.

[0009] Further, two contact plates are symmetrically slidably connected inside the first screw cylinder, the first adjusting screw is in extrusion contact with the contact plate, and the contact plate and the inner wall of the first screw cylinder are fixed with a return spring.

[0010] Further, a moving gap is formed in the bottom of the first screw cylinder, a vertical plate is fixed to the bottom of the contact plate and slides out along the moving gap, a second connecting rod is rotatably connected to the bottom of the vertical plate through a rotating shaft, and the other end of the second connecting rod is rotatably connected with the two first connecting rods through a rotating shaft.

[0011] Further, a socket is fixed on the surface of the receiving plate corresponding to the moving path of the plug, and the plug slides through the socket, the top of the fixing bolt is provided with a gear, and the plug is fixed with a rack corresponding to the position of the gear, and the rack is meshingly connected with the gear.

[0012] Further, a fixed frame is fixed on the top of the gear of the receiving plate, an extension column is fixed on the fixed frame corresponding to the position of the gear shaft, and the bottom of the extension column is rotatably connected with the fixing bolt through a bearing, and the gear is fixed on the top of the fixing bolt.

[0013] Further, the clamping assembly further comprises a waist groove, the same position of the waist groove is formed on the surface of the inner clamping frame and the outer clamping frame, the waist groove corresponds to the mounting hole, and the inner wall of the inner clamping frame and the outer clamping frame is provided with a filling groove between the flange body.

[0014] Further, a locking bolt is inserted into the inside of the waist groove and the extension plate, and the locking bolt passes through the mounting hole, the bottom of the mounting hole is threadedly sleeved with a nut, and the nut is in extrusion contact with the flange body.

[0015] The beneficial effects of the present application are as follows: 1、The second adjusting screw and the third adjusting screw are rotated to drill into the second screw cylinder at different lengths, the horizontal plate is kept in the diameter position of the flange body, then the receiving plate is moved along the two sides of the flange body, the extension plate is pulled out from the two ends of the receiving plate and contacted with the flange body, and the receiving plate and the horizontal plate are fixedly connected through the second adjusting screw and the third adjusting screw to keep the support strength and stability.

[0016] 2、The locking bolt passes through the pressing groove of the outer clamping frame and the inner clamping frame and the mounting hole on the flange body, the outer clamping frame and the inner clamping frame are fixedly wrapped on the two sides of the flange body through the nut, and the inner clamping frame and the outer clamping frame can protect the inner ring and the outer ring of the flange body from the inside and the outside.

[0017] 3、The two second connecting rods push two groups of first connecting rods to the two sides, the first connecting rod is rotationally connected with the plug plate, the plug plate slides along the socket, and then drives the rack to mesh with the gear, after the gear meshes and rotates, the fixing bolt drills into the receiving plate, the length of the extension plate and the receiving plate is limited, and the telescopic column keeps the connection relationship between the fixing bolt and the gear.

[0018] 4、The inner clamping frame and the outer clamping frame are clamped to the inner side and the outer side of the flange body, the two horizontal plates are opposite to the diameter of the flange body with a certain interval, and there is a first screw cylinder in the interval, the horizontal plate is rotated towards the first adjusting screw of the first screw cylinder, inserted into the inside of the first screw cylinder, the first adjusting screw extrudes the contact plate in the inside of the first screw cylinder, then the contact plate moves along the inside of the first screw cylinder, and the vertical plate moves along the moving gap at the bottom of the first screw cylinder.

[0019] 5、Compared with the prior art, the clamping assembly is fixed on the inner and outer surfaces of the diameter of the flange body, and the clamping position is protected, the horizontal plate and the receiving plate are connected through the connecting assembly, and the flange with different diameters is adjusted, and when the clamping assembly and the connecting assembly are connected, it is more convenient. DETAILED DESCRIPTION

[0020] Figure 1 It is a whole structure schematic view of the flange support protection integrated device of the present application; Figure 2 It is a clamping assembly and connecting assembly connection schematic view of the flange support protection integrated device of the present application; Figure 3 It is an outer clamping frame and inner clamping frame and flange body connection schematic view of the flange support protection integrated device of the present application; Figure 4 It is an outer clamping frame and inner clamping frame structure schematic view of the flange support protection integrated device of the present application; Figure 5This is a schematic diagram of the connection component structure of an integrated flange support and protection device according to the present invention; Figure 6 This is a schematic diagram of the bottom structure of the first screw barrel of the flange support and protection integrated device of the present invention; Figure 7 This is a schematic diagram of the internal structure of the first screw barrel of the flange support and protection integrated device of the present invention.

[0021] In the diagram: 1. Flange body; 11. Mounting hole; 2. Clamping assembly; 21. Inner clamping frame; 22. Outer clamping frame; 23. Horizontal plate; 24. Storage plate; 25. Extending plate; 26. Filling groove; 27. Locking bolt; 28. Nut; 29. ​​Waist groove; 210. First adjusting screw; 3. Connecting assembly; 31. First connecting rod; 32. Insert plate; 33. Socket; 34. Rack; 35. Fixing frame; 36. Gear; 37. Telescopic column; 38. Fixing bolt; 39. First screw barrel; 310. Base plate; 311. Moving plate; 312. Vertical plate; 313. Second connecting rod; 314. Moving notch; 315. Return spring; 316. Contact plate; 4. Second screw barrel; 41. Second adjusting screw; 42. Third adjusting screw; 43. Connecting block. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] Please see Figures 1 to 6This invention provides a technical solution: an integrated flange support and protection device, comprising a flange body 1, wherein mounting holes 11 are equidistantly opened on the surface of the flange body 1, and a clamping assembly 2 is arranged along the diameter line of the flange body 1. The clamping assembly 2 includes an inner clamping frame 21, and the inner clamping frames 21 are symmetrically arranged on both sides of the inner ring of the flange body 1, and an outer clamping frame 22 is arranged on the outer side of the flange body 1 corresponding to the inner clamping frames 21. The inner clamping frames 21 and the outer clamping frames 22 wrap around the surface of the flange body 1. A horizontal plate 23 is fixed to the top of the inner clamping frame 21, and a first screw cylinder 39 is arranged between the two horizontal plates 23. A first adjusting screw 210 is threaded into one end of the horizontal plate 23 facing the first screw cylinder 39, and one end of the first adjusting screw 210 is threaded into the first screw cylinder 39. The two sides of the horizontal plate 23 are provided with... The device includes a storage plate 24, on the surface of which is a connecting component 3. The connecting component 3 includes an insert plate 32. The two ends of the top of the storage plate 24 are slidably inserted with the insert plate 32, and the end of the insert plate 32 facing the first screw cylinder 39 is rotatably connected to the first connecting rod 31 through a rotating shaft. When using the device, the inner clamping frame 21 and the outer clamping frame 22 of the clamping component 2 are clamped on both sides of the flange body 1. The horizontal plate 23 is aligned with the axis of the flange body 1. Rubber pads are added inside the filling grooves 26 of the inner clamping frame 21 and the outer clamping frame 22 to maintain a tight connection between the flange body 1 and the inner walls of the inner clamping frame 21 and the outer clamping frame 22. The storage plate 24 is moved from the horizontal plate 23 to both sides, and the two ends of the storage plate 24 are connected to the flange body 1 through the protruding plate 25 to form a complete support frame to support and protect the flange body 1, preventing damage to the flange body 1.

[0024] In this embodiment, two connecting blocks 43 are symmetrically mounted on the surface of the storage plate 24, and a connecting block 43 is rotatably mounted on the middle surface of the horizontal plate 23. A second screw cylinder 4 is provided between the connecting block 43 on the storage plate 24 and the connecting block 43 on the horizontal plate 23. A second adjusting screw 41 is threadedly inserted into one end of the second screw cylinder 4, and the second adjusting screw 41 is rotatably connected to the connecting block 43 of the storage plate 24 through a bearing. A third adjusting screw 42 is threadedly inserted into the other end of the second screw cylinder 4. The other end of the rod 42 is rotatably connected to the connecting block 43 of the horizontal plate 23 via a bearing. The second adjusting screw 41 and the third adjusting screw 42 are rotated to drill into the second screw cylinder 4 to different lengths, keeping the horizontal plate 23 at the diameter position of the flange body 1. Then, the receiving plate 24 is moved along both sides of the flange body 1, and the protruding plate 25 is pulled out from both ends of the receiving plate 24 to contact the flange body 1. The receiving plate 24 and the horizontal plate 23 are fixedly connected by the second adjusting screw 41 and the third adjusting screw 42 to maintain the support strength and stability.

[0025] In this embodiment, the two ends of the storage plate 24 are threaded with fixing bolts 38, and the two ends of the storage plate 24 are slidably inserted with extension plates 25, with the fixing bolts 38 and extension plates 25 in pressing contact. The clamping assembly 2 also includes a waist groove 29. The inner clamping frame 21 and the outer clamping frame 22 have waist grooves 29 at the same position on their surfaces. The waist grooves 29 correspond to the mounting holes 11. A filling groove 26 is provided between the inner wall of the inner clamping frame 21 and the outer clamping frame 22 and the flange body 1. The waist grooves 29 and the extension plates 29 are connected together. A locking bolt 27 is inserted inside the flange body 1, and the locking bolt 27 passes through the mounting hole 11. A nut 28 is threaded onto the bottom of the mounting hole 11. The nut 28 is pressed against the flange body 1. The locking bolt 27 passes through the grooves of the outer clamping frame 22 and the inner clamping frame 21 and the mounting hole 11 on the flange body 1. The nut 28 fixes the outer clamping frame 22 and the inner clamping frame 21 to both sides of the flange body 1. The inner clamping frame 21 and the outer clamping frame 22 can protect the inner and outer rings of the flange body 1 from the inside and outside.

[0026] In this embodiment, the connecting assembly 3 further includes a base plate 310. The base plate 310 is fixed to the middle bottom of the first screw cylinder 39, and movable plates 311 are slidably inserted into both ends of the base plate 310. The two movable plates 311 extend out of the two ends of the base plate 310 in a staggered manner. One end of the movable plate 311 is rotatably connected to two first connecting rods 31 via a rotating shaft. Two contact plates 316 are symmetrically slidably connected inside the first screw cylinder 39. The first adjusting screw 210 is in pressing contact with the contact plates 316. A return spring 315 is fixed to the inner wall between the contact plate 316 and the first screw cylinder 39. The bottom of the first screw cylinder 39... The part has a movable notch 314. A vertical plate 312 is fixed to the bottom of the contact plate 316, and the vertical plate 312 slides through the movable notch 314. The bottom of the vertical plate 312 is rotatably connected to a second connecting rod 313 via a pivot. The other end of the second connecting rod 313 is rotatably connected to two first connecting rods 31 via a pivot. A socket 33 is fixed on the surface of the storage plate 24 corresponding to the moving path of the insert plate 32, and the insert plate 32 slides through the socket 33. A gear 36 is provided on the top of the fixing bolt 38. A rack 34 is fixed on the insert plate 32 at the position corresponding to the gear 36, and the rack 34 meshes with the gear 36. The storage plate 24 is fixed to the top of the gear 36 with a fixing bracket 35, and a telescopic column 37 is fixed to the fixing bracket 35 at the position corresponding to the axis of the gear 36. The bottom of the telescopic column 37 is rotatably connected to the fixing bolt 38 through a bearing. The gear 36 is fixed to the top of the fixing bolt 38. The inner clamping frame 21 and the outer clamping frame 22 clamp the inner and outer sides of the flange body 1. The two horizontal plates 23 are opposite to the diameter of the flange body 1, with a certain gap in between. There is a first screw cylinder 39 in the gap. The horizontal plate 23 is rotated toward the first adjusting screw 210 of the first screw cylinder 39 and inserted into the first screw cylinder 39. The first adjusting screw 210 is opposite to the first adjusting screw 210 of the first screw cylinder 39. The contact plate 316 inside the first screw cylinder 39 is pressed, and then as the contact plate 316 moves along the inside of the first screw cylinder 39, the vertical plate 312 moves along the moving notch 314 at the bottom of the first screw cylinder 39. The two sets of first connecting rods 31 are pushed to both sides by the two second connecting rods 313. The first connecting rods 31 are rotatably connected with the insert plate 32. The insert plate 32 slides along the socket 33, thereby driving the rack 34 to mesh with the gear 36. After the gear 36 meshes and rotates, the fixing bolt 38 is drilled into the storage plate 24, limiting the length of the protruding plate 25 and the storage plate 24. The telescopic column 37 maintains the connection between the fixing bolt 38 and the gear 36.

[0027] When using the device, the inner clamping frame 21 and outer clamping frame 22 of the clamping assembly 2 are clamped on both sides of the flange body 1. The horizontal plate 23 is aligned with the axis of the flange body 1. The second adjusting screw 41 and the third adjusting screw 42 are rotated to allow it to penetrate into the second screw cylinder 4 to different lengths, keeping the horizontal plate 23 at the diameter position of the flange body 1. Then, the receiving plate 24 is moved along both sides of the flange body 1, and the protruding plate 25 is pulled out from both ends of the receiving plate 24 to contact the flange body 1. The receiving plate 24 and the horizontal plate 23 are connected by the second adjusting screw 41 and the third adjusting screw 42. 2. Fixed connections are used to maintain support strength and stability. Locking bolts 27 pass through the grooves of the outer clamping frame 22 and the inner clamping frame 21, and the mounting holes 11 on the flange body 1. Nuts 28 secure the outer clamping frame 22 and the inner clamping frame 21 to both sides of the flange body 1. The inner clamping frame 21 and the outer clamping frame 22 can protect the inner and outer rings of the flange body 1 from the inside and outside. Rubber gaskets are added inside the filling grooves 26 of the inner clamping frame 21 and the outer clamping frame 22 to maintain a tight connection between the flange body 1 and the inner walls of the inner clamping frame 21 and the outer clamping frame 22. (The last sentence appears to be incomplete and possibly refers to a different connection.) The side-moving storage plate 24, the inner clamping frame 21, and the outer clamping frame 22 clamp the inner and outer sides of the flange body 1. Two horizontal plates 23 are opposite each other with a certain gap between them, and a first screw cylinder 39 is located between the gaps. The horizontal plates 23 are rotated towards the first adjusting screw 210 of the first screw cylinder 39 and inserted into the first screw cylinder 39. The first adjusting screw 210 presses against the contact plate 316 inside the first screw cylinder 39. Subsequently, as the contact plate 316 moves along the inside of the first screw cylinder 39, the vertical plate 312 moves along the moving notch at the bottom of the first screw cylinder 39. 314 moves, pushing two sets of first links 31 to both sides through two second links 313. The first links 31 are rotatably connected to the insert plate 32. The insert plate 32 slides along the socket 33, thereby driving the rack 34 to mesh with the gear 36. After the gear 36 meshes and rotates, the fixing bolt 38 drills into the storage plate 24, limiting the length of the protruding plate 25 and the storage plate 24. The telescopic column 37 maintains the connection between the fixing bolt 38 and the gear 36, forming a whole support frame to support and protect the flange body 1, avoiding damage to the flange body 1.

[0028] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flange support and protection integrated device, comprising a flange body (1), characterized in that: Mounting holes (11) are equidistantly provided on the surface of the flange body (1). A clamping assembly (2) is provided on the diameter line of the flange body (1). The clamping assembly (2) includes an inner clamping frame (21). The inner clamping frames (21) are symmetrically provided on both sides of the inner ring of the flange body (1), and an outer clamping frame (22) is provided on the outer side of the flange body (1) corresponding to the inner clamping frame (21). The inner clamping frame (21) and the outer clamping frame (22) are wrapped around the surface of the flange body (1). A horizontal plate (23) is fixed to the top of the inner clamping frame (21), and a first screw is provided between the two horizontal plates (23). (39) A first adjusting screw (210) is threaded into one end of the horizontal plate (23) facing the first screw cylinder (39), and one end of the first adjusting screw (210) is threaded into the inside of the first screw cylinder (39). A storage plate (24) is provided on both sides of the horizontal plate (23). A connecting component (3) is provided on the surface of the storage plate (24). The connecting component (3) includes a plug plate (32). The plug plates (32) are slidably inserted into both ends of the top of the storage plate (24), and the plug plate (32) facing the first screw cylinder (39) is rotatably connected to a first connecting rod (31) through a rotating shaft.

2. The flange support and protection integrated device according to claim 1, characterized in that: Two connecting blocks (43) are symmetrically installed on the surface of the storage plate (24), and a connecting block (43) is rotatably installed on the middle surface of the horizontal plate (23). A second screw (4) is provided between the connecting block (43) on the storage plate (24) and the connecting block (43) on the horizontal plate (23). A second adjusting screw (41) is threaded into one end of the second screw (4), and the second adjusting screw (41) is rotatably connected to the connecting block (43) on the storage plate (24) through a bearing. A third adjusting screw (42) is threaded into the other end of the second screw (4), and the other end of the third adjusting screw (42) is rotatably connected to the connecting block (43) on the horizontal plate (23) through a bearing.

3. The flange support and protection integrated device according to claim 1, characterized in that: The storage plate (24) has a fixing bolt (38) threaded into both ends, and an extension plate (25) is slidably inserted into both ends of the storage plate (24), and the fixing bolt (38) and the extension plate (25) are in contact by compression.

4. The flange support and protection integrated device according to claim 3, characterized in that: The connecting assembly (3) also includes a base plate (310). The base plate (310) is fixed at the bottom middle of the first screw cylinder (39), and movable plates (311) are slidably inserted at both ends of the base plate (310). The two movable plates (311) are staggered and pass through both ends of the base plate (310). One end of the movable plate (311) is rotatably connected to the two first connecting rods (31) through a rotating shaft.

5. The flange support and protection integrated device according to claim 4, characterized in that: The first screw barrel (39) has two symmetrical sliding connections inside. The first adjusting screw (210) is in contact with the contact plate (316). A reset spring (315) is fixed between the contact plate (316) and the inner wall of the first screw barrel (39).

6. The flange support and protection integrated device according to claim 5, characterized in that: The bottom of the first screw cylinder (39) is provided with a movable notch (314). The bottom of the contact plate (316) is fixed with a vertical plate (312), and the vertical plate (312) slides out along the movable notch (314). The bottom of the vertical plate (312) is rotatably connected to a second connecting rod (313) through a rotating shaft. The other end of the second connecting rod (313) is rotatably connected to two first connecting rods (31) through a rotating shaft.

7. The flange support and protection integrated device according to claim 6, characterized in that: A socket (33) is fixed on the surface of the storage plate (24) corresponding to the moving path of the insert plate (32), and the insert plate (32) slides through the socket (33). A gear (36) is provided on the top of the fixing bolt (38), and a rack (34) is fixed on the insert plate (32) corresponding to the position of the gear (36), and the rack (34) meshes with the gear (36).

8. The flange support and protection integrated device according to claim 7, characterized in that: The storage plate (24) is fixed with a fixing frame (35) on top of the gear (36), and the fixing frame (35) is fixed with a telescopic column (37) at the position corresponding to the axis of the gear (36). The bottom of the telescopic column (37) is rotatably connected to the fixing bolt (38) through a bearing, and the gear (36) is fixed on the top of the fixing bolt (38).

9. The flange support and protection integrated device according to claim 3, characterized in that: The clamping assembly (2) also includes a waist groove (29). The inner clamping frame (21) and the outer clamping frame (22) are provided with waist grooves (29) at the same position on their surfaces. The waist groove (29) corresponds to the mounting hole (11). A filling groove (26) is provided between the inner wall of the inner clamping frame (21) and the outer clamping frame (22) and the flange body (1).

10. The flange support and protection integrated device according to claim 9, characterized in that: Locking bolts (27) are inserted into the inside of the waist groove (29) and the protruding plate (25), and the locking bolts (27) pass through the mounting hole (11). A nut (28) is threaded onto the bottom of the mounting hole (11), and the nut (28) is pressed against the flange body (1).

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