A shaft duct back flange screw fastening device

Abstract

This utility model relates to the field of vertical shaft duct installation technology, and discloses a flange bolt fastening device for the back of a vertical shaft duct. It includes a housing, with a tightening assembly on one side of the housing. The tightening assembly includes a nut sleeve rotatably connected to the inside of one side of the housing. The nut sleeve has a nut groove inside. A main rod is rotatably connected to the inside of the other side of the housing. A columnar square groove is formed inside the main rod. A square shell is slidably connected inside the columnar square groove. A square column is slidably connected inside the square shell. A handle is fixedly connected to one end of the square column. This utility model utilizes the nut groove; turning the handle drives the nut to rotate, improving the convenience of tightening nuts installed against the wall on the back, reducing construction difficulty, and minimizing hand jamming. Simultaneously, the ring light provides illumination when tightening nuts in darker spaces on the back, facilitating monitoring of the tightening process. The ring light can also be removed and replaced if it is damaged.

Description

Technical Field

[0001] This utility model relates to the field of vertical shaft duct installation technology, and in particular to a flange bolt fastening device for the back of a vertical shaft duct. Background Technology

[0002] Vertical ducts are vertical pipe systems used for ventilation within buildings. They connect different floors to achieve air circulation and recirculation. When installing and connecting vertical ducts, flange bolts are usually required. A flange bolt is a fastener consisting of a hexagonal head, a flange, and a threaded rod, and must be used in conjunction with a nut.

[0003] In the current technology, vertical shaft ducts are usually installed in corners to reduce space occupation during construction and installation, and are connected using flange bolts. However, due to space limitations, there are always two walls with a small gap between the duct and the wall during installation. It is difficult to reach into the small space and hands are easily stuck, making it difficult to tighten the flange bolts on the back. This makes the construction and installation more troublesome and laborious, increasing the difficulty of construction. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a flange bolt fastening device for the back of a vertical shaft ventilation duct.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a flange bolt fastening device for the back of a vertical shaft duct, comprising a housing, wherein a screwing component is provided on one side of the housing; The tightening assembly includes a nut sleeve, which is rotatably connected to the inside of one side of the housing. The nut sleeve has a nut groove inside. A main rod is rotatably connected to the inside of the other side of the housing. A columnar square groove is opened inside the main rod. A square shell is slidably connected inside the columnar square groove. A square column is slidably connected inside the square shell. A throttle handle is fixedly connected to one end of the square column.

[0006] As a further description of the above technical solution: One end of the nut sleeve is fixedly connected to a driven bevel gear, and one end of the main rod is fixedly connected to a driving bevel gear. The driving bevel gear and the driven bevel gear are meshed together.

[0007] As a further description of the above technical solution: The upper surface of the columnar square groove is provided with a first limiting groove, the upper surface of the square shell is fixedly connected with a first limiting block, the inner wall of the square shell is fixedly connected with a second limiting block, and one side of the square column is provided with a second limiting groove.

[0008] As a further description of the above technical solution: The second limiting block is slidably connected inside the second limiting groove, and the first limiting block is slidably connected inside the first limiting groove. The lower surfaces of the main rod and the square shell are both connected through threaded tubes, and the threaded tubes are threaded with a first bolt inside.

[0009] As a further description of the above technical solution: A lighting assembly is provided on one side of the housing. The lighting assembly includes two support rods, which are fixedly connected to one side of the housing. One end of each support rod is fixedly connected to a mounting shell, and a ring-shaped lamp tube is provided inside the mounting shell.

[0010] As a further description of the above technical solution: Both sides of the ring-shaped lamp tube are fixedly connected to mounting blocks, and one of the mounting blocks is fixedly connected to a push-pull handle on one side, and a threaded hole is opened on one side of the mounting block.

[0011] As a further description of the above technical solution: Two blocking blocks are fixedly connected to both sides of the inner wall of the mounting shell, and a second bolt is threaded to both sides of the mounting shell, with the second bolt threaded inside the threaded hole.

[0012] This utility model has the following beneficial effects: 1. This utility model, through the design of the screwing component, utilizes the fact that the main rod can extend into the gap between the air duct and the wall, while the nut groove is convenient to fit onto the outer nut of the flange bolt connecting the air duct. With the fit between the nut groove and the nut, it is easy to rotate the nut sleeve when the handle is turned, thereby facilitating the rotation of the nut being fitted. This improves the convenience of installing and screwing the nut on the back side against the wall, reduces the difficulty of construction and installation, and reduces the phenomenon of hands getting stuck in the gap between the wall and the air duct. Furthermore, the distance between the handle and the outer shell can be adjusted according to the distance between the nut and the operator and the size of the air duct, improving the convenience of use.

[0013] 2. By setting up the lighting component, this utility model makes it easy to use the ring lamp to illuminate the nut that is being turned and is located in a darker space on the back when the nut is being turned using the nut groove. This helps to see the turning of the nut more clearly. The blocking block can limit the installation block, and after the second bolt is screwed out of the threaded hole, it is easy to disassemble and replace the ring lamp if it is damaged. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a schematic diagram of the outer shell structure proposed in this utility model; Figure 3This is a schematic diagram of the nut sleeve structure proposed in this utility model; Figure 4 This is a partial structural diagram of the first bolt connection proposed in this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the main rod proposed in this utility model; Figure 6 This is a schematic diagram of the square column structure proposed in this utility model; Figure 7 This is a schematic diagram of the square shell structure proposed in this utility model; Figure 8 This is a schematic diagram of the mounting shell structure proposed in this utility model; Figure 9 This is a schematic diagram of the mounting block structure proposed in this utility model.

[0015] Legend: 1. Outer shell; 2. Nut sleeve; 3. Nut groove; 4. Driven bevel gear; 5. Main rod; 6. Driving bevel gear; 7. Columnar square groove; 8. Square shell; 9. Square column; 10. Turn handle; 11. First limiting groove; 12. First limiting block; 13. Second limiting block; 14. Second limiting groove; 15. Threaded tube; 16. First bolt; 17. Support rod; 18. Mounting shell; 19. Annular lamp tube; 20. Mounting block; 21. Push-pull handle; 22. Threaded hole; 23. Blocking block; 24. Second bolt. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] As attached Figure 1-9 As shown, one embodiment of this utility model is provided: a flange bolt fastening device for the back of a vertical shaft duct, including a housing 1, and a tightening component is provided on one side of the housing 1; The tightening assembly includes a nut sleeve 2, which is rotatably connected to the inside of one side of the housing 1. The nut sleeve 2 has a nut groove 3 inside for installing the nut. The main rod 5 is rotatably connected to the inside of the other side of the housing 1. The main rod 5 has a columnar square groove 7 inside for easy installation of the square shell 8. The square shell 8 is slidably connected inside the columnar square groove 7. The square column 9 is slidably connected inside the square shell 8 for easy stretching and retraction, thereby adjusting the distance between the handle 10 and the housing 1. The handle 10 is fixedly connected to one end of the square column 9.

[0018] As attached Figure 3 As shown, a driven bevel gear 4 is fixedly connected to one end of the nut sleeve 2, which facilitates the rotation of the nut sleeve 2.

[0019] As attached Figure 4 As shown, a drive bevel gear 6 is fixedly connected to one end of the main rod 5. The drive bevel gear 6 and the driven bevel gear 4 are meshed, so that when the throttle 10 is turned, the driven bevel gear 4 can be driven to rotate through the drive bevel gear 6.

[0020] As attached Figure 5 As shown, the upper surface of the columnar square groove 7 is provided with a first limiting groove 11 to facilitate the sliding guidance of the first limiting block 12.

[0021] As attached Figure 7 As shown, a first limiting block 12 is fixedly connected to the upper surface of the square shell 8, and a second limiting block 13 is fixedly connected to the inner wall of the square shell 8. The first limiting block 12 is slidably connected inside the first limiting groove 11 to facilitate limiting the square shell 8.

[0022] As attached Figure 4 As shown, a second limiting groove 14 is provided on one side of the square column 9, and a second limiting block 13 is slidably connected inside the second limiting groove 14 to limit the square shell 8. The main rod 5 and the lower surface of the square shell 8 are both connected by threaded tubes 15, and the threaded tubes 15 are threadedly connected to the inside of the threaded tubes 15 to facilitate the separate fixing of the square shell 8 and the square column 9.

[0023] As attached Figure 8 As shown, a lighting assembly is provided on one side of the housing 1. The lighting assembly includes two support rods 17, which are fixedly connected to one side of the housing 1. One end of the two support rods 17 is fixedly connected to a mounting shell 18, which facilitates the installation of the ring lamp tube 19. The mounting shell 18 is rotatably connected to the outside of the nut sleeve 2.

[0024] As attached Figure 9 As shown, the mounting housing 18 has an annular lamp tube 19 inside, with a switch for controlling the lamp tube to turn on and off. Mounting blocks 20 are fixedly connected to both sides of the annular lamp tube 19. One side of one of the mounting blocks 20 is fixedly connected to a push-pull handle 21, which makes it easy to pull the annular lamp tube 19 out of the mounting housing 18. A threaded hole 22 is opened on one side of the mounting block 20, which makes it easy to install and connect the second bolt 24.

[0025] As attached Figure 8 As shown, two blocking blocks 23 are fixedly connected to both sides of the inner wall of the mounting shell 18 to limit the two sides of the mounting block 20. Both sides of the mounting shell 18 are threaded with second bolts 24, which are threaded into the inside of the threaded hole 22 to facilitate the limiting and fixing of the mounting block 20.

[0026] Working principle: In use, first turn on the ring lamp 19 to provide illumination. Then, loosen the multiple first bolts 16 so that one end enters the threaded tube 15. Next, when adjusting the distance between the handle 10 and the outer casing 1, pull the square casing 8, causing it to slide inside the columnar groove 7. At this time, the first limiting block 12 will slide inside the first limiting groove 11, thus widening the distance between the handle 10 and the outer casing 1. If the distance is insufficient and further adjustment is needed, pull the square column 9 again to make it slide inside the square casing 8. At this time, the second limiting block 13 will slide inside the second limiting groove 14, further widening the distance. The distance between the throttle 10 and the outer casing 1 is increased until the nut groove 3 is positioned at the nut on the back of the duct. Then, the two first bolts 16 are tightened to fix the square casing 8 and the square column 9. At this point, the nut groove 3 is placed over the outside of the nut on the back. Then, the throttle 10 is rotated so that it drives the main rod 5 to rotate through the square column 9 and the square casing 8. When the main rod 5 rotates, it drives the driving bevel gear 6 to rotate. When the driving bevel gear 6 rotates, it drives the driven bevel gear 4 to rotate, which in turn drives the nut sleeve 2 to rotate. Under the action of the nut groove 3, it is easy to drive the nut to rotate, thereby tightening the nut. When the ring lamp tube 19 is damaged and needs to be replaced, unscrew the second bolts 24 on both sides from the inside of the threaded hole 22 to release the mounting block 20 from its limit. Then pull the push-pull handle 21 to pull the mounting block 20 and pull it out from the inside of the blocking block 23, so that the ring lamp tube 19 can be easily removed from the inside of the mounting shell 18 for disassembly. The above operation is reversed during installation.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A shaft duct back flange screw fastening device comprising a housing (1), characterized in that: A screwing assembly is provided on one side of the outer casing (1); The turning assembly includes a nut sleeve (2), which is rotatably connected to the inside of one side of the outer shell (1). The nut sleeve (2) has a nut groove (3) inside. The main rod (5) is rotatably connected to the inside of the other side of the outer shell (1). The main rod (5) has a columnar square groove (7) inside. A square shell (8) is slidably connected inside the columnar square groove (7). A square column (9) is slidably connected inside the square shell (8). A throttle (10) is fixedly connected to one end of the square column (9).

2. A shaft duct back flange screw fastening arrangement according to claim 1 characterised in that: One end of the nut sleeve (2) is fixedly connected to a driven bevel gear (4), and one end of the main rod (5) is fixedly connected to a driving bevel gear (6). The driving bevel gear (6) and the driven bevel gear (4) are meshed together.

3. A shaft duct back flange screw fastening arrangement according to claim 2, characterised in that: The upper surface of the columnar square groove (7) is provided with a first limiting groove (11), the upper surface of the square shell (8) is fixedly connected with a first limiting block (12), the inner wall of the square shell (8) is fixedly connected with a second limiting block (13), and one side of the square column (9) is provided with a second limiting groove (14).

4. A shaft duct back flange screw fastening arrangement according to claim 3, characterised in that: The second limiting block (13) is slidably connected inside the second limiting groove (14), the first limiting block (12) is slidably connected inside the first limiting groove (11), and the lower surfaces of the main rod (5) and the square shell (8) are both connected through a threaded tube (15), and the threaded tube (15) is threadedly connected to the inside of the first bolt (16).

5. The shaft duct back flange screw fastening device according to claim 1, characterized in that: A lighting assembly is provided on one side of the outer casing (1). The lighting assembly includes two support rods (17). The two support rods (17) are fixedly connected to one side of the outer casing (1). One end of the two support rods (17) is fixedly connected to a mounting shell (18). A ring lamp tube (19) is provided inside the mounting shell (18).

6. A shaft duct back flange screw fastening arrangement according to claim 5, characterised in that: Both sides of the ring lamp tube (19) are fixedly connected to mounting blocks (20), one of the mounting blocks (20) is fixedly connected to a push-pull handle (21), and a threaded hole (22) is opened on one side of the mounting block (20).

7. The shaft duct back flange screw fastening device according to claim 5, characterized in that: Two blocking blocks (23) are fixedly connected to both sides of the inner wall of the mounting shell (18), and a second bolt (24) is threaded to both sides of the mounting shell (18). The second bolt (24) is threaded to the inside of the threaded hole (22).

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