Additional fixing device for glass wool template laid on surface layer of reducing rectangular air duct

Abstract

The utility model relates to the technical field of air duct heat preservation, and discloses an additional fixing device for a glass wool template for laying a surface layer of a reducing rectangular air duct, which comprises a fixing block, two connecting boxes are fixedly connected to the surface of the fixing block, gears are rotatably connected to the inner walls of the two connecting boxes, ratchet wheels are fixedly connected to the surfaces of the two gears, and the ratchet wheels are rotatably connected to the inner walls of the two connecting boxes. And the two ratchet wheels are rotationally connected with the inner walls of the adjacent connecting boxes, the inner walls of the two connecting boxes are rotationally connected with pawls, tension springs are fixedly connected between the two pawls and the inner walls of the adjacent connecting boxes, and the interiors of the two connecting boxes are slidably connected with lifting parts. According to the glass wool splicing device, the overall splicing length is adjusted through movement of the lifting piece, due to the fact that the pawl abuts against the ratchet wheel under the action of the tension spring, the lifting piece cannot stretch out under pulling of external force, and the glass wool on the air pipes with different diameters is fixed by retracting the lifting piece into the connecting box.

Description

Technical Field

[0001] This utility model relates to the field of duct insulation technology, and in particular to an additional fixing device for laying glass wool templates on the surface of rectangular ducts of different diameters. Background Technology

[0002] In the construction of building ventilation ducts, the installation and insulation of rectangular ducts are crucial steps. Glass wool, as a high-performance insulation material, is often used as the surface layer of rectangular ducts to meet the requirements of building energy conservation. However, rectangular ducts often have varying diameters, and the changes in their cross-sectional dimensions make it difficult to stably fix the glass wool template. This additional fixing device is mainly used in scenarios where glass wool templates are laid on the surface of rectangular ducts. It aims to provide reliable fixation for the glass wool templates, ensuring that they are firmly attached to the duct, effectively exerting their insulation function, and helping to improve the energy-saving effect and overall performance of the building ventilation system.

[0003] A search revealed CN222122457U, which discloses an additional fixing device for laying glass wool templates on the surface of rectangular ducts with varying diameters. The device includes a duct reducer, with additional steel strips spaced apart on its four surfaces. Each steel strip has a bottom surface and two fixing edges. Two fixing edges are symmetrically positioned at opposite ends of the bottom surface, each at a 90° angle to the bottom surface. The fixing edges have locking holes. Multiple fixing nails are evenly spaced on the bottom surface of the steel strip. Glass wool boards are laid on all four surfaces of the reducer, passing vertically through the fixing nails. A hook-shaped pressure plate is located at the top of the glass wool board and is fitted onto the fixing nails. This invention utilizes additional steel strips and fixing nails to fix the glass wool boards, preventing damage to the surface structure, improving construction efficiency and service life, and is not limited by ambient temperature.

[0004] Existing methods for fixing glass wool use adhesives and bolts. However, as the adhesive ages, the insulation material is prone to falling off, affecting its long-term performance. Bolt fixing has the drawback of damaging the duct structure and having low construction efficiency. Strap fixing has the drawback of being prone to loosening and breaking, and cannot guarantee long-term stability. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an additional fixing device for laying glass wool templates on the surface of rectangular ducts of different diameters, aiming to improve the problem that existing fixed placement cannot guarantee long-term stable use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an additional fixing device for laying glass wool templates on the surface of rectangular ducts of varying diameters, comprising a fixing block, two connecting boxes fixedly connected to the surface of the fixing block, gears rotatably connected to the inner walls of the two connecting boxes, ratchet wheels fixedly connected to the surfaces of the two gears, ratchet wheels rotatably connected to the inner walls of adjacent connecting boxes, pawls rotatably connected to the inner walls of the two connecting boxes, tension springs fixedly connected between the pawls and the inner walls of adjacent connecting boxes, lifting components slidably connected inside the two connecting boxes, racks fixedly connected to the surfaces of the two lifting components, racks meshing with adjacent gears, and splicing components provided inside the two lifting components for rapid splicing.

[0007] The above technical solution involves pushing the pawl to disengage it from the ratchet, thus removing the restriction on the rotation of the ratchet and gear. At this point, the lifting component can be freely pulled out to an appropriate length. After pressing the fixing block, the pawl engages with the ratchet under the action of the tension spring, preventing the gear and ratchet from rotating in opposite directions, thereby preventing the lifting component from extending. This allows the device to be quickly retracted or extended, adapting to duct bodies of different diameters. This greatly improves the versatility and flexibility of the device, eliminating the need to manufacture specific fixing devices for ducts of different diameters, reducing costs and increasing efficiency.

[0008] As a further description of the above technical solution:

[0009] Preferably, the splicing assembly includes a rotating component, which is rotatably connected to the inner wall of the lifting component. A lever is fixedly connected to the surface of the rotating component, and a spring is fixedly connected to the surface of the lever. The spring is fixedly connected to the inner wall of the lifting component.

[0010] Through the above technical solution: when the user assembles the two lifting components, the two rotating components begin to rotate and assemble with each other. During this process, the spring will press against the lever under the action of elasticity, thereby causing the rotating components to remain in the assembled state. This process can quickly fix the two lifting components without additional tools or complicated operations, which greatly improves the splicing efficiency between the four additional fixing devices and makes it convenient for operators to quickly assemble the device for fixing glass wool.

[0011] As a further description of the above technical solution:

[0012] Preferably, each of the two lifting components is fixedly connected to a connecting rod, and each connecting rod has a limit groove on its surface.

[0013] The above technical solution allows for the following: when two lifting components are assembled, the limiting groove cooperates with the limiting block on the surface of the other lifting component. The limiting block can be precisely inserted into the limiting groove, providing clear position guidance for the assembly of the two lifting components. This helps operators quickly and accurately align and assemble the two lifting components, improving assembly efficiency and reducing alignment time and operational difficulty during the assembly process.

[0014] As a further description of the above technical solution:

[0015] Preferably, limit blocks are fixedly connected to the surfaces of both lifting components.

[0016] The above technical solution enables rapid splicing of two devices, provides a positioning reference for the splicing process, allows operators to quickly locate the splicing position, improves splicing efficiency, ensures splicing accuracy, prevents the two lifting components from separating due to external forces or other factors after splicing, and enhances the stability of the splicing point.

[0017] As a further description of the above technical solution:

[0018] Preferably, both connecting rods are internally threaded with threaded rods, one end of each threaded rod is fixedly connected with a washer, and the other end of each threaded rod is fixedly connected with a knob.

[0019] The above technical solution allows operators to easily rotate the knob to rotate the threaded rod, thereby adjusting the extension and retraction of the threaded rod. This, in turn, moves the gasket, which then compresses the glass wool body, firmly fixing the glass wool to the duct body. This ensures that the glass wool will not shift during duct use.

[0020] As a further description of the above technical solution:

[0021] Preferably, an elastic pad is fixedly connected between the two connecting boxes, and a duct body is provided on the outside of the elastic pad, and a glass wool body is provided on the surface of the duct body.

[0022] Through the above technical solution: the elastic pad provides cushioning for the duct body, avoids direct contact between the connection box and the duct body, and enhances the fit between the connection box and the duct body, so that the device can be better fixed on the duct, assists in fixing the glass wool body, prevents the glass wool from sliding on the surface of the duct body, improves the stability of the glass wool fixation, and ensures the effective realization of the glass wool's thermal insulation function for the duct.

[0023] As a further description of the above technical solution:

[0024] Preferably, both pawls extend through and outward to the outside of the connecting box, and both pawls are slidably connected to the adjacent connecting box.

[0025] The above technical solution allows users to easily move the pawl to disengage it from the ratchet, enabling the ratchet and gear to rotate normally and allowing the lifting component to extend and retract freely. When it is necessary to adapt to duct bodies of different diameters, the length of the lifting component can be easily adjusted. After releasing the pawl, the pawl returns to its original position and engages with the ratchet under the action of the tension spring, preventing the lifting component from extending arbitrarily.

[0026] As a further description of the above technical solution:

[0027] Preferably, the actuating lever extends through and to the outside of the lifting member, and the actuating lever is slidably connected to the lifting member.

[0028] Through the above technical solution, the user can easily squeeze the spring by pushing the lever located on the outside of the lifting component, thereby driving the rotating component to rotate, realizing the quick disassembly of the two splicing components, making the four devices easy to separate, and providing operational convenience when it is necessary to adjust the position of the device, maintain or replace the device.

[0029] This utility model has the following beneficial effects:

[0030] 1. In this utility model, the length of the overall splicing is adjusted by moving the lifting component. Since the pawl is pressed against the ratchet by the tension spring, the lifting component cannot be extended under the pull of external force. By retracting the lifting component into the connecting box, the glass wool on the air ducts of different diameters can be fixed.

[0031] 2. In this utility model, by inserting the limiting block into the limiting groove on the connecting rod, the two rotating parts rotate and assemble, and under the action of the spring, the actuating rod is pressed, thereby realizing the assembly of the two lifting parts, thus realizing the rapid assembly of the four fixing devices and the rapid fixing of the glass wool. Attached Figure Description

[0032] Figure 1 This is a main drawing of the additional fixing device for laying glass wool templates on the surface of rectangular ducts of different diameters, as proposed in this utility model.

[0033] Figure 2 A schematic diagram of the connection box for the additional fixing device of the glass wool template for laying the surface layer of rectangular air ducts of different diameters proposed in this utility model.

[0034] Figure 3 A schematic diagram of the ratchet of the additional fixing device for laying glass wool template on the surface of rectangular ducts of different diameters proposed in this utility model;

[0035] Figure 4 This is a schematic diagram of the rotating component of the additional fixing device for laying glass wool templates on the surface of rectangular ducts of different diameters, as proposed in this utility model.

[0036] Legend:

[0037] 1. Duct body; 2. Glass wool body; 3. Fixing block; 4. Connecting box; 5. Elastic pad; 6. Lifting component; 7. Knob; 8. Threaded rod; 9. Gasket; 10. Rack; 11. Gear; 12. Ratchet; 13. Pad; 14. Tension spring; 15. Connecting rod; 16. Limiting block; 17. Limiting groove; 18. Splicing assembly; 1801. Rotating component; 1802. Actuating rod; 1803. Spring. Detailed Implementation

[0038] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0039] Reference Figures 1-3 This utility model provides an embodiment of an additional fixing device for laying glass wool templates on the surface of rectangular ducts of varying diameters. The device includes a fixing block 3, with two connecting boxes 4 fixedly connected to the surface of the fixing block 3. Gears 11 are rotatably connected to the inner walls of both connecting boxes 4. Ratchets 12 are fixedly connected to the surfaces of the two gears 11, and both ratchet wheels 12 are rotatably connected to the inner walls of adjacent connecting boxes 4. Pawls 13 are rotatably connected to the inner walls of both connecting boxes 4, and tension springs 14 are fixedly connected between the two pawls 13 and the inner walls of adjacent connecting boxes 4. Lifting components 6 are slidably connected inside both connecting boxes 4. Racks 10 are fixedly connected to the surfaces of both lifting components 6, and both racks 10 are meshed with adjacent gears 11. A splicing assembly 18 is provided inside the two lifting components 6 for rapid splicing.

[0040] Specifically, in use, four of these devices are placed at the four corners of the duct body 1. The pawl 13 is pushed to disengage from the ratchet 12. At this time, the ratchet 12 and the pawl 13 can rotate normally. The lifting component 6 is pulled out to an appropriate length. After splicing the four devices through the splicing assembly 18, the four fixing blocks 3 are pressed. At this time, the lifting component 6 is retracted into the connecting box 4. Under the action of the tension spring 14, the pawl 13 is attached to the ratchet 12. At this time, the ratchet 12 and the gear 11 cannot rotate in the opposite direction, preventing the lifting component 6 from extending. This allows the four devices to be quickly retracted to adapt to duct bodies 1 of different diameters.

[0041] Reference Figure 4The splicing component 18 includes a rotating component 1801, which is rotatably connected to the inner wall of the lifting component 6. A toggle rod 1802 is fixedly connected to the surface of the rotating component 1801, and a spring 1803 is fixedly connected to the surface of the toggle rod 1802. The spring 1803 is fixedly connected to the inner wall of the lifting component 6.

[0042] Specifically, the user assembles the four devices together, assembling the two lifting components 6. At this time, the two rotating components 1801 begin to rotate and assemble. During the assembly process, the spring 1803 will press against the lever 1802 under the action of elasticity, causing the rotating component 1801 to remain in the assembled state, thereby achieving quick fixation of the two lifting components 6. When disassembly is required, push the lever 1802 to squeeze the spring 1803. At this time, the two rotating components 1801 will rotate, thereby achieving quick disassembly of the two splicing components 18 and disassembling the four devices. When the four devices are assembled, the glass wool body 2 is tightly fixed to the duct body 1, thereby quickly laying glass wool on ducts of different diameters.

[0043] Reference Figure 4 Both lifting components 6 have connecting rods 15 fixedly connected to their surfaces, and each connecting rod 15 has a limit groove 17 on its surface.

[0044] Specifically, the limiting groove 17 on the connecting rod 15 is used to quickly assemble the two lifting parts 6 when another limiting block 16 is inserted, preventing separation.

[0045] Reference Figure 4 Limit blocks 16 are fixedly connected to the surfaces of both lifting components 6.

[0046] Specifically, the limiting block 16 can be inserted into the limiting groove 17, thereby enabling the rapid splicing and positioning of the two devices.

[0047] Reference Figure 4 Both connecting rods 15 are internally threaded with threaded rods 8. One end of each threaded rod 8 is fixedly connected with a washer 9, and the other end of each threaded rod 8 is fixedly connected with a knob 7.

[0048] Specifically, turning the knob 7 causes the threaded rod 8 to rotate, which in turn causes the gasket 9 to squeeze the glass wool body 2, so that the glass wool body 2 is tightly fixed to the duct body 1.

[0049] Reference Figure 1 An elastic pad 5 is fixedly connected between the two connecting boxes 4. A duct body 1 is provided on the outside of the elastic pad 5, and a glass wool body 2 is provided on the surface of the duct body 1.

[0050] Specifically, the elastic pad 5 provides cushioning and protection for the duct body 1, preventing the connection box 4 from directly contacting the duct body 1 and causing damage. At the same time, it enhances the fit between the connection box 4 and the duct body 1. The glass wool body 2 can provide thermal insulation for the duct body 1, and the elastic pad 5 can also help fix the glass wool body 2 to a certain extent, preventing it from sliding on the surface of the duct body 1.

[0051] Reference Figure 3 Both pawls 13 penetrate and extend to the outside of the connecting box 4, and both pawls 13 are slidably connected to the adjacent connecting box 4.

[0052] Specifically, the pawl 13 extends to the outside of the connecting box 4 to facilitate user operation. The user moves the pawl 13 to disengage it from the ratchet 12, at which point the lifting component 6 can be retracted into the connecting box 4 to accommodate duct bodies 1 of different diameters.

[0053] Reference Figure 4 The lever 1802 passes through and extends to the outside of the lifting component 6, and the lever 1802 is slidably connected to the lifting component 6.

[0054] Specifically, by pushing the lever 1802 to compress the spring 1803, the rotating component 1801 is driven to rotate. When the rotating component 1801 rotates to a vertical position, the two lifting components 6 can be separated, achieving quick disassembly.

[0055] Working principle: First, place the four devices at the four corners of the duct body 1. Then, push the pawl 13 located on the outside of the connecting box 4 for easy operation, so that the pawl 13 disengages from the ratchet 12. At this time, the ratchet 12 and the gear 11 connected to it can rotate normally. Then, pull out the lifting component 6 to the appropriate length and use the splicing component 18 to splice the four devices. When splicing, the two lifting components 6 are spliced ​​together, and the rotating component 1801 on them starts to rotate and splice. The spring 1803 pushes against the actuating rod 1802 to keep the rotating component 1801 spliced, so that the two lifting components 6 can be quickly fixed. The limiting block 16 is inserted into the limiting groove 17 of the connecting rod 15 to assist in the quick splicing and positioning. After the splicing is completed, press the four fixing blocks 3 so that the lifting component 6 is retracted into the connecting box 4. Under the action of the tension spring 14, the pawl 13 is attached to the ratchet 12 to prevent the lifting component 6 from extending out, which can adapt to different diameter duct bodies 1.

[0056] Next, turn the knob 7 to rotate the threaded rod 8, causing the gasket 9 to squeeze the glass wool body 2, thus firmly fixing the glass wool body 2 to the duct body 1. To disassemble, push the lever 1802 extending to the outside of the lifting component 6 to squeeze the spring 1803, causing the rotating component 1801 to rotate. When it rotates to the vertical position, the two lifting components 6 separate, achieving quick disassembly. Throughout the process, the elastic pad 5 provides buffer protection for the duct body 1, enhances the fit between the connecting box 4 and the duct body 1, and helps to fix the glass wool body 2 to prevent it from sliding.

[0057] 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. An additional fixing device for laying glass wool panels for the facing of rectangular ducts of different diameters, comprising a fixing block (3), characterised in that: The fixed block (3) is fixedly connected with two connecting boxes (4), the inner wall of two connecting boxes (4) is rotatably connected with a gear (11), the surface of two gears (11) is fixedly connected with a ratchet wheel (12), two ratchet wheels (12) are rotatably connected between the inner wall of the adjacent connecting box (4), the inner wall of two connecting boxes (4) is rotatably connected with a pawl (13), two pawls (13) and the inner wall of the adjacent connecting box (4) are fixedly connected with a tension spring (14), two connecting boxes (4) are slidably connected with a lifting piece (6), the surface of two lifting pieces (6) is fixedly connected with a rack (10), two racks (10) are engagedly connected between the adjacent gear (11), two lifting pieces (6) are provided with a splicing assembly (18), and the splicing assembly (18) is used for quick splicing.

2. The additional fixing device for glass wool template for facing of rectangular reducer ducts according to claim 1, characterized in that: The splicing assembly (18) comprises a rotating piece (1801), the rotating piece (1801) is rotatably connected between the inner wall of the lifting piece (6), the surface of the rotating piece (1801) is fixedly connected with a push rod (1802), the surface of the push rod (1802) is fixedly connected with a spring (1803), and the spring (1803) is fixedly connected between the inner wall of the lifting piece (6).

3. The additional fixing device for glass wool template for facing of rectangular reducer ducts according to claim 1, characterized in that: The surface of two lifting pieces (6) is fixedly connected with a connecting rod (15), and the surface of the connecting rod (15) is provided with a limiting groove (17).

4. The additional fixing device for glass wool template for facing of rectangular reducer ducts according to claim 1, characterized in that: The surface of two lifting pieces (6) is fixedly connected with a limiting block (16).

5. The additional fixing device for glass wool template for facing of rectangular reducer ducts according to claim 3, characterized in that: The inner part of two connecting rods (15) is threadedly connected with a threaded rod (8), one end of two threaded rods (8) is fixedly connected with a gasket (9), and the other end of two threaded rods (8) is fixedly connected with a knob (7).

6. The additional fixing device for glass wool template for facing of rectangular reducer ducts according to claim 1, characterized in that: Two connecting boxes (4) are fixedly connected with an elastic pad (5), the outer side of the elastic pad (5) is provided with a wind pipe body (1), and the surface of the wind pipe body (1) is provided with a glass wool body (2).

7. The additional fixing device for glass wool template for facing of rectangular reducer ducts according to claim 1, characterized in that: Two pawls (13) extend to the outer side of the connecting box (4), and two pawls (13) are slidably connected between the adjacent connecting box (4).

8. The additional fixing device for glass wool template for facing of rectangular reducer ducts according to claim 2, characterized in that: The push rod (1802) extends to the outer side of the lifting piece (6), and the push rod (1802) is slidably connected between the lifting piece (6).

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