Suspension fixing device of ventilation air duct

Abstract

A suspension fixing device of a ventilation air duct comprises a fixing frame and a suspension assembly, and the fixing frame is connected with the suspension assembly through a connecting assembly. The fixing frame comprises a transversely-arranged telescopic rod and a fixing base at one end of the telescopic rod, the connecting assembly is arranged at the end, away from the fixing base, of the telescopic rod, and the vertical height of the connecting assembly is adjustable. The connecting assembly comprises a rotating part with a vertical rotating axis, the suspension assembly comprises a fixing ring which is adjustable in caliber and can allow the air duct to penetrate through, and the fixing ring is connected to the lower side of the rotating part. The height and the angle of the suspension structure can be changed according to the requirements of the air duct, the caliber of the fixing ring can be changed to adapt to air ducts of different sizes, the air duct is suitable for different ventilation working conditions, meanwhile, the air duct is quite fast to disassemble and assemble, stable in structure, easy to operate and capable of being disassembled and used repeatedly, and waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction auxiliary tools, in particular to a suspension and fixing device for a ventilation duct. Background Art

[0002] Tunnel ventilation uses local ventilators for forced ventilation, with ducts as the air supply path. As the power of local ventilators increases, the air supply distance also increases. Therefore, it is necessary to fix the ventilation ducts of long-distance tunnels. Patent document with application number CN202321927558.5 discloses a suspension device for reinforced coal mine ventilation ducts. The device has a two-stage split structure, and the ventilation duct is fixed by the cooperation of a clamp and a positioning plate. A rotatable fastening seat is provided on the clamp, which is fastened by the clamping seat and the positioning plate. The clamp is provided with an upper clamp and a lower clamp that cooperate with each other and are respectively clamped on the upper and lower sides of the ventilation duct. The ventilation duct is very quick to disassemble and assemble, and the structure is stable and easy to operate. Patent document CN202222204538.7 discloses a suspension and fixing device for coal mine ventilation ducts. The device uses a first clamping plate, a second clamping plate, and two elastic bands to limit the front, back, top, and bottom positions of the coal mine ventilation duct, thereby improving the stability of the coal mine ventilation duct during use. However, the components used to fix the ducts in the above two patents can only be used for ducts of one size and cannot be used for ducts of different sizes. Furthermore, the duct connection angle and position cannot be flexibly adjusted, making it unsuitable for various ventilation conditions. Utility Model Content

[0003] In order to solve the technical problems in the above background technology that the suspension assembly cannot adapt to ducts of different sizes and the angle and position cannot be adjusted, the utility model provides a suspension and fixing device for a ventilation duct.

[0004] The technical solution of this utility model is as follows:

[0005] A suspension and fixing device for a ventilation duct includes a mounting frame and a suspension assembly, the mounting frame and the suspension assembly being connected via a connecting assembly. The mounting frame includes a transversely arranged telescopic rod and a mounting seat at one end thereof. The connecting assembly is disposed at the end of the telescopic rod distal from the mounting seat and is vertically adjustable. The connecting assembly includes a rotating member with a vertical axis of rotation. The suspension assembly includes a fixing ring with an adjustable caliber capable of accommodating the passage of the duct, and the fixing ring is connected to the underside of the rotating member.

[0006] The length of the telescopic rod can be adjusted according to the conditions of the construction site. At the same time, the height of the connecting component can be adjusted to meet the ventilation needs of different developments. The fixed ring is set on the outer ring of the wind tube and can be adjusted to a caliber that matches the wind tube according to the size of the wind tube. By rotating the rotating part on the upper side of the fixed ring, the connection angle of the wind tube can be adjusted to meet various ventilation conditions.

[0007] Furthermore, the connecting assembly includes a vertically arranged screw rod that passes through the telescopic rod and is provided with locking nuts at the upper and lower sides of the telescopic rod. The screw rod can be rotated to adjust its relative height to the telescopic rod. Once the desired height is reached, the screw rod can be fixed in place by tightening the locking nuts at the upper and lower sides of the telescopic rod.

[0008] Preferably, a connecting block is provided at the lower end of the screw, and the rotating member includes a connecting ring that can be rotatably mounted on the outer ring of the screw and supported by the connecting block. The outer ring of the connecting ring is connected to the fixed ring via a suspension rod. The angle of the fixed ring can be adjusted by rotating the rotating member. The connecting block at the lower end of the screw can support the connecting ring to prevent it from falling. At the same time, after the connecting ring is rotated to the appropriate position, it can be locked with the connecting block to prevent further rotation.

[0009] As a preferred embodiment, the two ends of the boom are hingedly connected to the connecting ring and the fixing ring respectively. The hinged connection method can adapt to the change of the diameter of the fixing ring and has strong flexibility.

[0010] Further preferably, the fixing ring comprises two curved plates with openings facing each other, and an elastic band is provided between the two curved plates to adjust the distance between the two curved plates. The curved plates can fit the outer ring of the air duct, and the provision of the elastic band enables the diameter of the fixing ring to be flexibly adjusted.

[0011] Specifically, the curved plate includes a first curved plate and a second curved plate, both of which are arranged vertically and each of which has a through-channel extending through both ends of the curved plate. One end of the elastic band is fixed to the interior of the lower end of the through-channel of the first curved plate, and the other end passes through the through-channels of the first and second curved plates in sequence, and is movably connected to the lower end of the first curved plate. One end of the elastic band is movably connected to the lower end of the first curved plate, allowing it to be quickly removed from the first curved plate, facilitating placement of the air duct within the fixed ring. The elastic band can then be passed around the outer ring of the air duct and reconnected to the first curved plate. At this point, the elastic band and the two curved plates together form a fixed ring capable of supporting the air duct.

[0012] In a preferred embodiment, the mounting base includes a vertically mounted connecting plate connected to one end of the telescopic rod, with a diagonal brace positioned between the rod and the connecting plate. The connecting plate is secured to the tunnel sidewall via expansion bolts, while the diagonal brace acts as a connecting reinforcement, enhancing the overall structural stability.

[0013] Furthermore, the arc-shaped plate is made of rubber material to avoid wear between the arc-shaped plate and the air duct, and can also prevent the air duct from being twisted and damaged during the alternation of air supply and air stop.

[0014] Through the above design, the beneficial effects of the utility model are:

[0015] The fixing frame can make the ventilation duct more stable. At the same time, the duct can be quickly assembled and disassembled, has a stable structure, is easy to operate, and can be disassembled and used multiple times to avoid waste.

[0016] By setting the connecting components, the height and the angle of the suspension structure can be changed according to the needs of the air duct, which is suitable for different ventilation conditions.

[0017] The suspension component is made of flexible material, which not only allows the diameter of the fixing ring to be changed to adapt to air ducts of different sizes, but also prevents the air duct from being twisted and damaged during the alternation of air supply and air stop. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached figure:

[0019] Figure 1 This is an overall schematic diagram of the fixing device in the embodiment;

[0020] Figure 2 Schematic diagram of the connecting ring structure in the embodiment;

[0021] Figure 3 This is a schematic diagram of the connection block structure in the embodiment;

[0022] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0023] The components represented by the reference numerals in the figure are:

[0024] 1. Fixed frame; 101. Telescopic rod; 102. Connecting plate; 103. Diagonal support rod; 2. Connecting assembly; 201. Screw; 202. Connecting ring; 2021. Groove; 2022. Snap-on block; 203. Connecting block; 2031. Bayonet; 204. Suspension rod; 3. Suspension assembly; 301. Arc plate; 302. Elastic band; 3021. Rotating shaft; 3022. Limit block; 303. Articulated block. DETAILED DESCRIPTION

[0025] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0026] Example

[0027] Combine Figures 1 to 4 This embodiment provides a suspension and fixing device for a ventilation duct, comprising a fixing frame 1 and a suspension assembly 3. The fixing frame 1 and the suspension assembly 3 are connected via a connecting assembly 2. The structure of the fixing device (the aforementioned suspension and fixing device for a ventilation duct) is described in detail below.

[0028] In this embodiment, the fixing frame 1 comprises a horizontally arranged telescopic rod 101 and a fixing base at one end thereof. The fixing base comprises a vertically arranged connecting plate 102 connected to one end of the telescopic rod 101. A diagonal brace 103 is provided between the telescopic rod 101 and the connecting plate 102. The connecting plate 102 is fixed to the tunnel side wall via expansion bolts, and the diagonal brace 103 serves as a connecting reinforcement, increasing the stability of the overall structure.

[0029] In this embodiment, the connecting assembly 2 is located at the end of the telescopic rod 101 away from the fixing base and is vertically adjustable. The connecting assembly 2 includes a vertically arranged screw 201 that passes through the telescopic rod 101 and is equipped with locking nuts at the top and bottom of the telescopic rod 101. The relative height of the screw 201 to the telescopic rod 101 can be adjusted by rotating it. Once the desired height is reached, the screw 201 can be fixed by tightening the locking nuts at the top and bottom of the telescopic rod 101.

[0030] In this embodiment, the connecting assembly 2 includes a rotating member with a vertical rotation axis. A connecting block 203 is provided at the lower end of the screw 201. The rotating member includes a connecting ring 202 that can be rotatably mounted on the outer ring of the screw 201 and supported by the connecting block 203.

[0031] In this embodiment, the suspension assembly 3 includes a fixing ring with an adjustable diameter capable of accommodating the passage of the air duct, and the fixing ring is connected to the lower side of the rotating member.

[0032] In a specific implementation, the outer ring of the connecting ring 202 is connected to the fixed ring through the suspension rod 204, and the angle of the fixed ring is adjusted by rotating the rotating part. The connecting block 203 at the lower end of the screw 201 can support the connecting ring 202 to prevent it from falling. At the same time, after the connecting ring 202 is rotated to the appropriate position, it can be clamped with the connecting block 203 to prevent further rotation.

[0033] Reference Figure 2 A through hole is provided in the middle of the connecting ring 202 for the screw rod 201 to pass through. A plurality of clamping blocks 2022 are provided on the side of the connecting ring 202 opposite to the connecting block 203, and the clamping blocks 2022 are evenly arranged along the circumference of the connecting ring 202.

[0034] Reference Figure 3 The connecting block 203 is provided with a plurality of bayonet holes 2031 on the side opposite to the connecting ring 202, and the connecting ring 202 is lifted up at one end until the connecting block 2022 is separated from the bayonet hole 2031. After rotating the connecting ring 202 to a suitable angle, the connecting ring 202 is moved downward until the connecting block 2022 is inserted into the bayonet hole 2031. At this time, the position of the connecting ring 202 is fixed and no longer rotates.

[0035] As a preferred embodiment, both ends of the boom 204 are hingedly connected to the connecting ring 202 and the fixing ring respectively. The hinged connection method can adapt to the change of the diameter of the fixing ring and has high flexibility.

[0036] Combine Figures 1 to 2 The outer ring of the connecting ring 202 is provided with a groove 2021 opened along its radial direction, and the groove 2021 is symmetrically arranged along the diameter of the connecting ring 202. The hanging rod 204 is correspondingly provided with two, and one end is hinged in the groove 2021, and the other end is hingedly connected to the fixed ring through the hinge block 303.

[0037] Further preferably, the fixing ring includes two curved plates 301 with openings facing each other, and an elastic band 302 is provided between the two curved plates 301 to adjust the distance between the two curved plates 301. The curved plates 301 can fit the outer ring of the air duct, and the provision of the elastic band 302 allows the diameter of the fixing ring to be flexibly adjusted.

[0038] Exemplarily, the arc-shaped plate 301 is made of rubber material to avoid wear between the arc-shaped plate 301 and the air duct, and to avoid twisting and damage to the air duct during alternation between air supply and air stop.

[0039] Specifically, the curved plate 301 includes a first curved plate and a second curved plate, both of which are arranged vertically and each of which has a through-channel extending through both ends of the curved plate. One end of the elastic band 302 is fixed to the interior of the lower end of the through-channel of the first curved plate, and the other end passes through the through-channels of the first and second curved plates in sequence, and is movably connected to the lower end of the first curved plate. One end of the elastic band 302 is movably connected to the lower end of the first curved plate, allowing it to be quickly removed from the first curved plate, facilitating the placement of the air duct in the fixed ring. The elastic band 302 can then be passed around the outer ring of the air duct and reconnected to the first curved plate 301. At this point, the elastic band 302 and the two curved plates 301 together form a fixed ring capable of supporting the air duct.

[0040] Combine Figure 4 The elastic band 302, which is movably connected to the lower end of the first curved plate, is connected to a limit block 3022. The cross-sectional dimensions of the limit block 3022 are larger than the cross-sectional dimensions of the through-channel, preventing the elastic band 302 from escaping from the second curved plate. The lower end of the first curved plate is provided with a slot that can engage with the limit block 3022.

[0041] Preferably, a rotating shaft 3021 passing through the outside is provided inside the first arc plate, and the rotating shaft 3021 is arranged perpendicular to the radial direction of the first arc plate. The elastic band 302 is arranged at one end inside the first arc plate and is connected and fixed to the rotating shaft 3021, and is wrapped around the outer ring of the rotating shaft 3021. Rotating the rotating shaft 3021 can adjust the length of the elastic band 302, thereby adjusting the diameter of the fixing ring to be larger or smaller. The end of the rotating shaft 3021 away from the first arc plate is provided with a locking member that can limit the rotation of the rotating shaft 3021. After adjusting the diameter of the fixing ring, tighten the locking member so that the rotating shaft 3021 no longer rotates and the diameter of the fixing ring no longer changes.

[0042] During construction, expansion bolts are set in the tunnel side walls, and then the fixed frame 1 is detachably fixed by the expansion bolts, the suspension component 3 is connected and fixed to the telescopic rod 101 of the fixed frame 1 through the connecting component 2, the height is adjusted, and the fixed connection between the connecting component 2 and the fixed frame 1 is achieved by tightening the locking nut, the rotating part is rotated to adjust the angle of the suspension component 3, and finally the ventilation duct passes through the fixing ring of the suspension component 3, and the length of the elastic band 302 is adjusted by rotating the rotating shaft 3021 until the diameter of the fixing ring matches the outer wall of the duct to achieve suspension and fixation of the ventilation duct.

[0043] Through the above design, the fixing frame 1 can make the ventilation duct more stable, and the duct can be quickly assembled and disassembled. The structure is stable and easy to operate. It can also be disassembled and reused multiple times to avoid waste. By setting the connecting component 2, the height and angle of the suspension structure can be adjusted according to the needs of the duct, adapting to different ventilation conditions. The suspension component 3 is made of a flexible material, which not only allows the diameter of the fixing ring to be changed to accommodate ducts of different sizes, but also prevents the duct from twisting and damaging during the alternation of air supply and air stop.

Claims

1. A suspension and fixing device for a ventilation duct, characterized in that: It comprises a fixing frame (1) and a suspension assembly (3), wherein the fixing frame (1) and the suspension assembly (3) are connected via a connecting assembly (2); The fixing frame (1) comprises a transversely arranged telescopic rod (101) and a fixing seat at one end thereof; The connecting assembly (2) is arranged at one end of the telescopic rod (101) away from the fixed seat, and the vertical height is adjustable; The connecting assembly (2) comprises a rotating member with a vertical rotation axis, and the suspension assembly comprises a fixing ring with an adjustable caliber capable of accommodating the passage of a wind tube, and the fixing ring is connected to the lower side of the rotating member.

2. A ventilation duct suspension and fixing device according to claim 1, characterized in that: The connecting assembly (2) comprises a vertically arranged screw rod (201) which passes through the telescopic rod (101) and is provided with locking nuts at positions on the upper and lower sides of the telescopic rod (101).

3. A ventilation duct suspension and fixing device according to claim 2, characterized in that: A connecting block (203) is provided at the lower end of the screw (201); The rotating member comprises a connecting ring (202) that is rotatably sleeved on the outer ring of the screw rod (201) and supported by a connecting block (203). The outer ring of the connecting ring is connected to the fixed ring via a suspension rod (204).

4. A ventilation duct suspension and fixing device according to claim 3, characterized in that: Both ends of the suspension rod (204) are hingedly connected to the connecting ring (202) and the fixing ring respectively.

5. The ventilation duct suspension and fixing device according to claim 1, characterized in that: The fixing ring comprises two arc-shaped plates (301) with openings facing each other, and an elastic band (302) capable of adjusting the distance between the two arc-shaped plates (301) is provided between the two arc-shaped plates (301).

6. A ventilation duct suspension and fixing device according to claim 5, characterized in that: The arc-shaped plate (301) comprises a first arc plate and a second arc plate, both arc plates are arranged vertically and each has a through passage running through both ends of the arc plate; One end of the elastic band (302) is fixed inside the lower end of the through-channel of the first arc plate, and the other end passes through the through-channels of the first arc plate and the second arc plate in sequence, and is movably connected to the lower end of the first arc plate.

7. A ventilation duct suspension and fixing device according to claim 1, characterized in that: The fixing seat comprises a connecting plate (102) arranged vertically and connected to one end of the telescopic rod (101), and a diagonal support rod (103) is further provided between the telescopic rod (101) and the connecting plate (102).

8. The ventilation duct suspension and fixing device according to claim 5, characterized in that: The arc-shaped plate (301) is made of rubber material.

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