A duct flange bolting device

Abstract

This utility model discloses a duct flange bolt fastening device, comprising: an optical axis guide rail with fixed plates at both ends; two lead screws, each connected to one of the two fixed plates at its ends; and two sliders mounted on the optical axis guide rail, which move along the length of the guide rail. A fixing mechanism and a tightening mechanism are respectively installed on the two sliders, and the fixing and tightening mechanisms are connected to the two lead screws. This utility model has a simple structure. Through the coordinated operation of the optical axis guide rail, fixed plates, first lead screw, second lead screw, and sliders, it effectively solves the technical problem of difficult installation and fastening of duct flange bolts in confined spaces such as urban rail transit. The device can flexibly adjust its structure according to the actual working space, achieving stable fixation on the surface of ducts of different sizes and adapting to the installation requirements of flange bolts with different spacings, significantly improving the applicability and operability of the device under complex working conditions.

Description

Technical Field

[0001] This utility model relates to the field of duct flange installation technology, specifically a duct flange bolt fastening device. Background Technology

[0002] In confined spaces such as urban rail transit stations, the installation of electromechanical equipment faces significant challenges related to clearance height. To meet building height requirements, large-diameter ventilation ducts typically need to be installed flush against the structural ceiling, resulting in extremely limited working space between the top of the duct and the ceiling, often only about 100mm. Within such confined spaces, flange connections between ducts are difficult to implement, especially the installation and tightening of bolts above the flanges. Due to insufficient operating space, workers cannot use manual tools to perform tasks such as threading bolts, tightening nuts, and applying torque, easily leading to problems such as missing bolts, insufficient preload, or loose connections. This severely affects the sealing, stability, and overall structural safety of the duct system, posing not only quality and safety hazards but also failing to meet the requirements of design drawings and relevant construction specifications.

[0003] Currently, traditional construction methods mainly rely on manual operation in confined spaces or the use of simple extended tools, which is inefficient, difficult to operate, and hard to guarantee construction quality. It also easily leads to worker fatigue and operational errors. With the increasing demands for electromechanical installation quality, construction efficiency, and standardized operations in rail transit engineering, traditional methods can no longer meet the requirements for high-quality, high-standard construction. Therefore, a duct flange bolt fastening device is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a duct flange bolt fastening device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a duct flange bolt fastening device, comprising: The optical axis guide rail has fixing plates at both ends; Two lead screws, each end of which is connected to two fixed plates; Two sliders are mounted on an optical axis guide rail. The sliders move along the length of the optical axis guide rail. A fixing mechanism and a tightening mechanism are respectively installed on the two sliders. The fixing mechanism and the tightening mechanism are connected to two lead screws.

[0006] As a further embodiment of this utility model: the two lead screws are composed of a first lead screw and a second lead screw. Both ends of the first lead screw and the second lead screw are connected to the fixed plate through bearing bases. Handwheels are installed at the ends of the first lead screw and the second lead screw that pass through the fixed plate.

[0007] As a further embodiment of this utility model: both ends of the optical axis guide rail are connected to the fixing plate through fixing sleeves.

[0008] As a further embodiment of this utility model: the fixing mechanism includes a limiting plate connected to the slider, the limiting plate being sleeved on the outer circumferential surface of the optical axis guide rail, the limiting plate being in sliding fit with the first lead screw, and the limiting plate being connected to the second lead screw by a nut.

[0009] As a further embodiment of this utility model: the tightening mechanism includes a connecting plate mounted on the slider, an electric telescopic rod mounted on the connecting plate, one end of the electric telescopic rod being connected to a fixed slide rail, the other end of the fixed slide rail being connected to the connecting plate, a 90° bit corner bend being mounted on the end of the fixed slide rail near the electric telescopic rod, and a hexagonal sleeve being mounted on the 90° bit corner bend.

[0010] As a further embodiment of this invention, a strong magnet is provided inside the hexagonal sleeve.

[0011] Compared with the prior art, the beneficial effects of this utility model are: This application effectively solves the technical problem of difficult installation and tightening of duct flange bolts in confined spaces such as urban rail transit by coordinating components such as optical axis guide rails, fixing plates, first lead screws, second lead screws, and sliders. The device can flexibly adjust its structure according to the actual working space to achieve stable fixation on the surface of ducts of different sizes and adapt to the installation requirements of flange bolts with different spacings. This significantly improves the applicability and operability of the device under complex working conditions. At the same time, the device adopts an assemblable structure, which can be quickly disassembled after construction, making it easy to carry, store, and transport. It is suitable for multi-site and continuous operation scenarios, greatly improving construction efficiency and the level of work standardization. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the duct flange bolt fastening device of this utility model. Figure 2 This is a schematic diagram showing the duct flange bolt fastening device of this utility model in use. In the diagram: 1. Optical axis guide rail; 2. Fixing plate; 3. Fixing sleeve; 4. Bearing base; 5. First lead screw; 6. Second lead screw; 7. Slider; 8. Limiting plate; 9. Nut; 10. Connecting plate; 11. Electric telescopic rod; 12. Fixed slide rail; 13. 90° bit corner bender; 14. Hexagonal socket; 15. Handwheel. Detailed Implementation

[0013] 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.

[0014] Please see Figure 1-2 In this embodiment of the utility model, a duct flange bolt fastening device includes: The optical axis guide rail 1 has fixing plates 2 at both ends; Two lead screws, each end of which is connected to two fixed plates 2; Two sliders 7 are set on the optical axis guide rail 1. The sliders 7 move along the length of the optical axis guide rail 1. A fixing mechanism and a tightening mechanism are respectively installed on the two sliders 7. The fixing mechanism and the tightening mechanism are connected to two lead screws.

[0015] Specifically, both ends of the optical axis guide rail 1 are connected to the fixing plate 2 through the fixing sleeve 3, which can fix the fixing plate 2 to both ends of the optical axis guide rail 1. The surface of the optical axis guide rail 1 is in contact with the surface of the air duct, providing an installation reference surface for the entire installation device. Then, one of the fixing plates 2 is pressed against one side of the air duct, and the fixing mechanism on the optical axis guide rail 1 is adjusted according to the distance from the other side of the air duct. The fixing mechanism can be adjusted according to the size of the air duct to adapt to various sizes of air ducts. The fixing mechanism and the tightening mechanism are connected to the slider 7, which can provide a moving path for the fixing mechanism and the tightening mechanism under the action of the optical axis guide rail 1.

[0016] Please see Figure 1 In one embodiment, preferably, the two lead screws consist of a first lead screw 5 and a second lead screw 6. Both ends of the first lead screw 5 and the second lead screw 6 are connected to the fixed plate 2 through the bearing base 4. Handwheels 15 are installed at the ends of the first lead screw 5 and the second lead screw 6 that pass through the fixed plate 2. Furthermore, due to the setting of the bearing base 4, when the first lead screw 5 and the second lead screw 6 rotate, they will not be affected by the fixed plate 2, and the bearing base 4 will not affect their rotation while providing support for the first lead screw 5 and the second lead screw 6.

[0017] Please see Figure 1In one embodiment, preferably, the fixing mechanism includes a limiting plate 8 connected to the slider 7. The limiting plate 8 is sleeved on the outer circumferential surface of the optical axis guide rail 1. The limiting plate 8 is slidably fitted with the first lead screw 5, and the limiting plate 8 is connected to the second lead screw 6 through a nut 9. Further, the limiting plate 8 is threadedly connected to the second lead screw 6 through the nut 9, while the limiting plate 8 is movably connected to the first lead screw 5 and the optical axis guide rail 1. Therefore, when the handwheel 15 on the second lead screw 6 is rotated, the second lead screw 6 rotates, and then drives the nut 9 that is fitted with it to move, converting the rotational motion of the second lead screw 6 into the linear motion of the limiting plate 8, thereby changing the position of the limiting plate 8. Since the limiting plate 8 cannot rotate under the restriction of the first lead screw 5 and the optical axis guide rail 1, the position of the limiting plate 8 will move when the second lead screw 6 rotates in both directions.

[0018] Please see Figure 1 In one embodiment, preferably, the tightening mechanism includes a connecting plate 10 mounted on the slider 7, an electric telescopic rod 11 mounted on the connecting plate 10, one end of the electric telescopic rod 11 being connected to a fixed slide rail 12, the other end of the fixed slide rail 12 being connected to the connecting plate 10, a 90° bit corner bend 13 being mounted on the end of the fixed slide rail 12 near the electric telescopic rod 11, and a hexagonal sleeve 14 being mounted on the 90° bit corner bend 13, with a strong magnet disposed inside the hexagonal sleeve 14.

[0019] Specifically, the connecting plate 10 and the first lead screw 5 are connected by a thread. When the first lead screw 5 rotates, it drives the connecting plate 10 to move along the length of the optical axis guide rail 1, thereby driving the slider 7 to move synchronously. The electric telescopic rod 11 can push the fixed slide rail 12 to extend and retract along its own length, so that the 90° bit corner bracket 13 installed at the end of the fixed slide rail 12 moves accordingly. The hexagonal sleeve 14 is equipped with a strong magnet, which can attract and fix bolts or nuts. When in use, the electric wrench is aligned with the 90° bit corner bracket 13 and started, which can drive the hexagonal sleeve 14 and the bolts or nuts inside to rotate synchronously, so as to realize the tightening or disassembly operation.

[0020] The working principle and usage process of this utility model are as follows: Adjust the distance between the limiting plate 8 and the fixing plate 2 according to the size of the air duct so that the distance between the two matches the size of the air duct, thereby completing the overall position fixation. Then, rotate the handwheel 15 on the first lead screw 5 so that the hexagonal sleeve 14 is aligned with the bolt mounting position on the air duct. According to the distance between the tooling and the bolt mounting position, move the hexagonal sleeve 14 close to the bolt mounting position. Then, install the bolt in the hexagonal sleeve 14 and use an electric wrench to drive the bolt installation. After the bolt at one point is installed, continue to rotate the handwheel 15 so that the first lead screw 5 rotates and drives the hexagonal sleeve 14 to the next point. After all the bolts are installed, the tooling can be removed from the air duct.

[0021] 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. 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.

[0022] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A duct flange bolt fastening device, characterized in that, include: The optical axis guide rail has fixing plates at both ends; Two lead screws, each end of which is connected to two fixed plates; Two sliders are mounted on an optical axis guide rail. The sliders move along the length of the optical axis guide rail. A fixing mechanism and a tightening mechanism are respectively installed on the two sliders. The fixing mechanism and the tightening mechanism are connected to two lead screws.

2. The duct flange bolt fastening device according to claim 1, characterized in that, The two lead screws are composed of a first lead screw and a second lead screw. Both ends of the first lead screw and the second lead screw are connected to the fixed plate through bearing bases. Handwheels are installed at the ends of the first lead screw and the second lead screw that pass through the fixed plate.

3. The duct flange bolt fastening device according to claim 1, characterized in that, Both ends of the optical axis guide rail are connected to the fixing plate through fixing sleeves.

4. The duct flange bolt fastening device according to claim 2, characterized in that, The fixing mechanism includes a limiting plate connected to the slider. The limiting plate is sleeved on the outer circumferential surface of the optical axis guide rail. The limiting plate and the first lead screw are in sliding fit, and the limiting plate and the second lead screw are connected by a nut.

5. The duct flange bolt fastening device according to claim 1, characterized in that, The tightening mechanism includes a connecting plate mounted on the slider, an electric telescopic rod mounted on the connecting plate, one end of the electric telescopic rod being connected to a fixed slide rail, the other end of the fixed slide rail being connected to the connecting plate, a 90° bit corner bend being mounted on the end of the fixed slide rail near the electric telescopic rod, and a hexagonal sleeve being mounted on the 90° bit corner bend.

6. The duct flange bolt fastening device according to claim 5, characterized in that, The hexagonal sleeve has a strong magnet inside.

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