Tunnel ventilating duct fixing device

Abstract

The utility model discloses a tunnel ventilation pipeline fixing device, and relates to the field of tunnel construction, the tunnel ventilation pipeline fixing device comprises a lifting lug, a fixing hole is formed in the lifting lug, the fixing hole is connected to a tunnel wall through a connecting piece, a threaded rod is rotatably connected to the end, away from the fixing hole, of the lifting lug, and a first fixing sleeve is in threaded connection to the end, away from the lifting lug, of the threaded rod; a second fixing sleeve is hinged to one section of the first fixing sleeve, a plurality of fixing rods are installed on the first fixing sleeve and the second fixing sleeve in a sliding mode, and fixing mechanisms used for fixing the fixing rods are arranged on the first fixing sleeve and the second fixing sleeve in a sliding mode. The installation method has the effect of simplifying the installation process.

Description

Technical Field

[0001] The present application relates to the field of tunnel construction, and in particular to a tunnel ventilation duct fixing device. Background Art

[0002] Ventilation ducts are metal or composite pipes used in ventilation and air-conditioning projects in industrial and civil buildings. They are a kind of municipal infrastructure for air circulation and reducing the concentration of harmful gases. After the tunnel is constructed, fans and ventilation ducts need to be installed to adjust the air in the tunnel through the fans and ventilation ducts to make the gas in the tunnel fresh. In the prior art, ventilation ducts in tunnels are generally hoisted on the top of the tunnel, and most of the ventilation ducts are rectangular or cylindrical. General fixing devices cannot be adapted, and only fixed components of the same model can be customized.

[0003] The existing Chinese utility model patent with publication number CN202122801660.8 provides a fixing device for a tunnel ventilation duct, which adjusts the length and angle of the sling through a movable seat, and then applies pressure to the limit plate through the sling, so that the limit plate is forced to fit the duct, thereby achieving the fixing of the duct.

[0004] However, the above solution requires manual rotation of the movable seat to adjust the length of the sling so that the fixing device fits the ventilation duct, thereby completing the fixing of ventilation ducts of different specifications. This method makes the installation process of the on-site installers more complicated. Utility Model Content

[0005] In order to solve the above-mentioned problem of complicated installation, the present application provides a tunnel ventilation duct fixing device.

[0006] The present application provides a tunnel ventilation duct fixing device that adopts the following technical solution:

[0007] A tunnel ventilation duct fixing device includes a lifting ear, a fixing hole is opened on the lifting ear, the fixing hole is connected to the tunnel wall through a connecting piece, a threaded rod is rotatably connected to one end of the lifting ear away from the fixing hole, a first fixing sleeve is threadedly connected to one end of the threaded rod away from the lifting ear, a second fixing sleeve is hinged at one end of the first fixing sleeve, a plurality of fixing rods are slidably installed on the first fixing sleeve and the second fixing sleeve, and a fixing mechanism for fixing the fixing rods is slidably provided on the first fixing sleeve and the second fixing sleeve.

[0008] By adopting the above technical solution, a plurality of fixing rods slidably arranged on the first fixing sleeve and the second fixing sleeve abut against the ventilation duct during the process in which the first fixing sleeve and the second fixing sleeve fix the ventilation duct at one end of the fixing rod; as the first fixing sleeve and the second fixing sleeve rotate around the hinged portion, the fixing rods are subjected to the squeezing force of the ventilation duct and are displaced on the first fixing sleeve and the second fixing sleeve in a direction away from the ventilation duct; when the first fixing sleeve and the second fixing sleeve rotate around the hinged portion and close, the fixing mechanism fixes the position of the fixing rod, so that the ventilation duct is fixed in the ventilation duct fixing device.

[0009] Optionally, the fixing mechanism includes an abutment rod, an abutment block, a locking sleeve and a clamping block, the first fixing sleeve and the second fixing sleeve are provided with a locking hole at one end away from the hinge, the abutment rod is slidably installed in the locking hole, the abutment rod is connected to the abutment block at one end close to the hinged part of the first fixing sleeve and the second fixing sleeve, an inclined surface is provided at one end of the abutment block away from the abutment rod, the end of the abutment block away from the abutment rod abuts the locking sleeve, an inclined surface is provided at one end of the locking sleeve abutting against the abutment block, an axial sliding groove is provided on the outer wall of the first fixing sleeve and the second fixing sleeve, the locking sleeve is installed on the sliding groove and slides along the sliding groove direction, and a clamping block for fixing the fixing rod is installed on the side of the locking sleeve close to the fixing rod.

[0010] By adopting the above technical solution, when the first fixing sleeve and the second fixing sleeve rotate around the hinged part and close, the abutment rod arranged in the locking hole is displaced by the squeezing force from the first fixing sleeve and the second fixing sleeve and drives the abutment block arranged on the abutment rod to displace together. The abutment block is provided with an inclined surface at the abutment part with the locking sleeve. When the abutment block is displaced, it pushes the locking sleeve to move toward the fixing rod, and fixes the fixing rod by the clamping block arranged on the fixing rod, so that the position of the ventilation duct installed inside the ventilation duct fixing device is fixed.

[0011] Optionally, an axial sliding groove is provided on the outer wall of the first fixing sleeve and the second fixing sleeve, and the locking sleeve is installed on the sliding groove and slides along the sliding groove direction.

[0012] By adopting the above technical solution, the locking sleeve is displaced toward the fixed rod when it is subjected to external force from the abutment block. When the locking sleeve is installed in the slide groove, the displacement direction of the locking sleeve is limited during the displacement process, thereby reducing the displacement movement of the locking sleeve in the same direction as the displacement direction of the abutment block during the displacement process.

[0013] Optionally, the slide groove is a dovetail groove, and the locking sleeve is installed in the slide groove and matches the shape of the slide groove.

[0014] By adopting the above technical solution, the dovetail groove reduces the probability of the locking sleeve installed thereon escaping from the dovetail groove.

[0015] Optionally, a first elastic member is installed on the abutting rod, and one end of the first elastic member facing away from the abutting rod is installed on the locking hole, a second elastic member is installed on the locking sleeve, and one end of the second elastic member facing away from the locking sleeve is installed on the slide groove, a third elastic member is installed on the fixing rod, and one end of the third elastic member facing away from the fixing rod is connected to the first fixing sleeve, a fourth elastic member is installed on the fixing rod, and one end of the fourth elastic member facing away from the fixing rod is connected to the second fixing sleeve.

[0016] By adopting the above technical solution, the first elastic member is deformed when the abutting rod is displaced by force and generates elastic force to restore the abutting rod to its original position, and the abutting block applies extrusion force to the locking sleeve, and the second elastic member generates elastic force as the locking sleeve moves toward the fixed rod. When the first fixed sleeve and the second fixed sleeve rotate around the hinged part and leave the locked state, the extrusion force on the abutting rod disappears, the abutting rod is displaced to the original position by the elastic force generated by the first elastic member, and the abutting block is displaced with the abutting rod. When the abutting block is displaced, the extrusion force on the locking sleeve by the abutting block disappears, and the elastic force generated by the second elastic member drives the locking sleeve to move to the original position. At this time, the fixed rod is out of the fixed state. This device does not require manual intervention. When the ventilation duct fixing device is opened, the locking state of the fixed rod is automatically released. The third elastic member and the fourth elastic member generate elastic force when the fixed rod is extruded by the ventilation duct. When the fixed rod is out of the fixed state, the third elastic member and the fourth elastic member drive the fixed rod to restore to its original position.

[0017] Optionally, the fixing rod is provided with a plurality of slots matching the shape of the card block.

[0018] By adopting the above technical solution, the locking groove and the locking block on the fixing rod cooperate to improve the locking probability of the fixing rod.

[0019] Optionally, an elastic pad is installed on the end of the fixing rod facing away from the locking sleeve.

[0020] By adopting the above technical solution, the elastic pad reduces the probability of damaging the ventilation duct during the process of the ventilation duct fixing device fixing the ventilation duct.

[0021] Optionally, a hole is formed at one end of the first fixing sleeve and the second fixing sleeve away from the hinge, a bolt for locking the first fixing sleeve and the second fixing sleeve is installed in the hole, and a nut is installed at one end of the bolt.

[0022] By adopting the above technical solution, the bolts and nuts lock the first fixing sleeve and the second fixing sleeve when the first fixing sleeve and the second fixing sleeve are closed around the hinged portion.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By sliding the fixing rods on the first fixing sleeve and the second fixing sleeve, the operator does not need to excessively adjust the ventilation duct fixing device when installing ventilation ducts of different specifications. The fixing device for fixing the fixing rod automatically locks the fixing rod during the closing process of the first fixing sleeve and the second fixing sleeve. This process does not require manual intervention, and when the first fixing sleeve and the second fixing sleeve are out of the closed state, the fixing mechanism automatically disengages from the locking state, so that the fixing rod returns to the initial position, reducing the difficulty of disassembling and assembling the ventilation duct fixing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an oblique view of a tunnel ventilation duct fixture.

[0026] Figure 2 It is a front view of a tunnel ventilation duct fixing device.

[0027] Figure 3 It is a side view of a tunnel ventilation duct fixture.

[0028] Description of reference numerals:

[0029] 1. Lifting ear; 2. Fixing hole; 3. First fixing sleeve; 4. Second fixing sleeve; 5. Fixing rod; 6. Abutting rod; 7. Locking hole; 8. Abutting block; 9. Locking sleeve; 10. Slide groove; 11. Block; 12. First elastic member; 13. Second elastic member; 14. Slot; 15. Elastic pad; 16. Threaded rod; 17. Third elastic member; 18. Fourth elastic member. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] The present application embodiment discloses a tunnel ventilation duct fixing device. Figure 1-3, including a lifting ear 1, a fixing hole 2 is opened on the lifting ear 1, and the fixing hole 2 is connected to the tunnel wall through a connecting piece. The end of the lifting ear 1 away from the fixing hole 2 is rotatably connected to a threaded rod 16, and the end of the threaded rod 16 away from the lifting ear 1 is threadedly connected to a first fixing sleeve 3. The threaded rod 16 can be rotated to adjust the distance between the lifting ear 1 and the first fixing sleeve 3, so that the ventilation duct fixing device can be used in more scenarios. At the same time, the angle between the first fixing sleeve 3 and the threaded rod 16 can be adjusted to suit more application scenarios; a second fixing sleeve 4 is hinged at one end of the first fixing sleeve 3, and a plurality of fixing rods 5 are slidably installed on the first fixing sleeve 3 and the second fixing sleeve 4. In this embodiment, a total of eight fixing rods are provided, and a fixing mechanism for fixing the fixing rods 5 is slidably provided on the first fixing sleeve 3 and the second fixing sleeve 4. The fixing mechanism includes an abutment rod 6, an abutment block 8, a locking sleeve 9 and a clamping block 11. A locking hole 7 is provided at one end of the first fixing sleeve 3 and the second fixing sleeve 4 away from the hinge. The abutment rod 6 is slidably installed in the locking hole 7. One end of the abutment rod 6 close to the hinged part of the first fixing sleeve 3 and the second fixing sleeve 4 is connected to the abutment block 8. An inclined surface is provided at one end of the abutment block 8 away from the abutment rod 6. The end of the abutment block 8 away from the abutment rod 6 abuts the locking sleeve 9. An inclined surface is provided at one end of the locking sleeve 9 abutting against the abutment block 8. An axial sliding groove 10 is provided on the outer wall of the first fixing sleeve 3 and the second fixing sleeve 4. The locking sleeve 9 is installed on the sliding groove 10 and slides along the sliding groove 10. A clamping block 11 for fixing the fixing rod 5 is installed on the side of the locking sleeve 9 close to the fixing rod 5. During the process of fixing the ventilation duct by the first fixing sleeve 3 and the second fixing sleeve 4, one end of the fixing rod 5 abuts against the ventilation duct. As the first fixing sleeve 3 and the second fixing sleeve 4 rotate around the hinged part, the fixing rod 5 is subjected to the extrusion force applied by the ventilation duct, causing the fixing rod 5 to move toward the first fixing sleeve 3 and the second fixing sleeve 4 away from the ventilation duct. The fixing rod 5 slidingly arranged on the first fixing sleeve 3 and the second fixing sleeve 4 does not require manual adjustment when fixing ventilation ducts of different specifications, thereby reducing the installation difficulty for the installer. When the first fixing sleeve 3 and the second fixing sleeve 4 rotate and close around the hinged part, the fixing mechanism fixes the position of the fixing rod 5, so that the ventilation duct is fixed in the ventilation duct fixing device. When the first fixing sleeve 3 and the second fixing sleeve 4 rotate around the hinged part and close, the abutting rod 6 arranged in the locking hole 7 is displaced by the squeezing force from the first fixing sleeve 3 and the second fixing sleeve 4 and drives the abutting block 8 to displace together. The abutting block 8 is provided with an inclined surface at the abutting part with the locking sleeve 9. When the abutting block 8 is displaced, it pushes the locking sleeve 9 to move toward the fixing rod 5, and fixes the fixing rod 5 by the clamping block 11 arranged on the fixing rod 5, so that the position of the ventilation duct installed inside the ventilation duct fixing device is fixed, thereby reducing the probability of the ventilation duct shaking due to external force.

[0032] Reference Figure 1-2The first fixed sleeve 3 and the second fixed sleeve 4 are provided with an axial sliding groove 10 on their outer walls, and the locking sleeve 9 is installed on the sliding groove 10 and slides along the sliding groove 10. The sliding groove 10 is a dovetail groove, and the locking sleeve 9 is installed in the sliding groove 10 and matches the shape of the sliding groove 10. When the locking sleeve 9 is subjected to external force from the abutment block 8, it moves toward the fixed rod 5. The locking sleeve 9 is installed in the sliding groove 10 so that the displacement direction of the locking sleeve 9 is limited during the displacement process, thereby reducing the displacement movement of the locking sleeve 9 in the same direction as the displacement direction of the abutment block 8 during the displacement process. The dovetail groove reduces the probability of the locking sleeve 9 installed thereon escaping from the dovetail groove.

[0033] Reference Figure 1-3 A first elastic member 12 is mounted on the abutting rod 6, and one end of the first elastic member 12 facing away from the abutting rod 6 is mounted on the locking hole 7. A second elastic member 13 is mounted on the locking sleeve 9, and one end of the second elastic member 13 facing away from the locking sleeve 9 is mounted on the slide groove 10. When the abutting rod 6 is displaced by force, the first elastic member 12 is deformed and generates an elastic force to restore the abutting rod 6 to its original position. At the same time, the abutting block 8 applies a squeezing force to the locking sleeve 9, and the second elastic member 13 generates an elastic force as the locking sleeve 9 moves toward the fixed rod 5. When the first fixing sleeve 3 and the second fixing sleeve 4 rotate around the hinged part and are out of the locked state, the extrusion force on the abutment rod 6 disappears, and the abutment rod 6 is displaced to the original position by the elastic force generated by the first elastic member 12, while driving the abutment block 8 to displace along with the abutment rod 6. When the abutment block 8 is displaced, the extrusion force on the locking sleeve 9 by the abutment block 8 disappears, and the elastic force generated by the second elastic member 13 drives the locking sleeve 9 to displace to the original position. At this time, the fixing rod 5 is out of the fixed state. This device does not require manual intervention. When the ventilation duct fixing device is opened, the locking state of the fixing rod 5 is automatically released. In this embodiment, the first elastic member 12 and the second elastic member 13 are both springs; a third elastic member 17 is installed on the fixing rod 5, and the end of the third elastic member 17 facing away from the fixing rod 5 is connected to the first fixing sleeve 3; a fourth elastic member 18 is installed on the fixing rod 5, and the end of the fourth elastic member 18 facing away from the fixing rod 5 is connected to the second fixing sleeve 4. In this embodiment, the third elastic member 17 and the fourth elastic member 18 are both springs. The third elastic member 17 and the fourth elastic member 18 generate elastic force when the fixing rod 5 is subjected to the squeezing force of the ventilation duct. When the fixing rod 5 is out of the fixed state, the third elastic member 17 and the fourth elastic member 18 drive the fixing rod 5 to restore its original position.

[0034] Reference Figure 1-3, the fixing rod 5 is provided with a plurality of slots 14 that match the shape of the block 11. An elastic pad 15 is installed at the end of the fixing rod 5 that is away from the locking sleeve 9. The first fixing sleeve and the second fixing sleeve are provided with holes at the ends away from the hinge, and bolts for locking the first fixing sleeve 3 and the second fixing sleeve 4 are installed in the holes. One end of the bolt is installed with a nut. In this embodiment, the bolts and nuts are conventional, and the bolts and nuts are not marked in the figure. The slots 14 on the fixing rod 5 cooperate with the block 11 to improve the locking probability of the fixing rod 5. The elastic pad 15 reduces the probability of damage to the ventilation duct during the process of the ventilation duct fixing device fixing the ventilation duct. In this embodiment, the elastic pad 15 is a rubber pad. The bolts and nuts lock the first fixing sleeve 3 and the second fixing sleeve 4 when the first fixing sleeve 3 and the second fixing sleeve 4 are closed around the hinged part.

[0035] The implementation principle of a tunnel ventilation duct fixing device in an embodiment of the present application is as follows: when installing the ventilation duct, the first fixing sleeve 3 and the second fixing sleeve 4 rotate and close around the hinged portion, one end of a plurality of fixing rods 5 arranged on the first fixing sleeve 3 and the second fixing sleeve 4 abuts against the ventilation duct and is displaced on the first fixing sleeve 3 and the second fixing sleeve 4 by the squeezing force of the ventilation duct during the hinging process of the first fixing sleeve 3 and the second fixing sleeve 4, when the first fixing sleeve 3 and the second fixing sleeve 4 are completely closed, the abutting rod 6 is driven by the squeezing force to displace the abutting block 8, the abutting block 8 drives the locking sleeve 9 to displace, and the clamping block 11 on the locking sleeve 9 is aligned with the clamping groove on the fixing rod 5 14 abuts to complete the locking of the ventilation duct fixing device, and the first fixing sleeve 3 and the second fixing sleeve 4 are locked and installed by bolts and nuts. This method does not require excessive human intervention. The spontaneous displacement of the fixing rod 5 can adapt to ventilation ducts of different specifications while reducing the installation difficulty of the installer; the steps are opposite during disassembly, the bolts and nuts are opened, the first fixing sleeve 3 and the second fixing sleeve 4 are disengaged, the first elastic member 12 and the second elastic member 13 drive the abutment rod 6 and the locking sleeve 9 to return to their original positions, the fixing rod 5 is disengaged from the locking, and the ventilation duct fixing device is now disassembled, and the third elastic member 17 and the fourth elastic member 18 drive the fixing rod 5 to return to its original position. Compared with the prior art, this process does not require excessive human intervention and reduces the difficulty of disassembly for the installer.

[0036] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A tunnel ventilation duct fixing device, comprising a lifting ear (1), a fixing hole (2) is formed on the lifting ear (1), the fixing hole (2) is connected to the tunnel wall through a connecting piece, a threaded rod (16) is rotatably connected to one end of the lifting ear (1) away from the fixing hole (2), a first fixing sleeve (3) is threadedly connected to one end of the threaded rod (16) away from the lifting ear (1), and a second fixing sleeve (4) is hingedly connected to one end of the first fixing sleeve (3), characterized in that: A plurality of fixing rods (5) are slidably mounted on the first fixing sleeve (3) and the second fixing sleeve (4), and fixing mechanisms for fixing the fixing rods (5) are slidably arranged on the first fixing sleeve (3) and the second fixing sleeve (4).

2. A tunnel ventilation duct fixing device according to claim 1, characterized in that: The fixing mechanism comprises an abutting rod (6), an abutting block (8), a locking sleeve (9) and a clamping block (11); a locking hole (7) is provided at one end of the first fixing sleeve (3) and the second fixing sleeve (4) away from the hinge; the abutting rod (6) is slidably mounted in the locking hole (7); an end of the abutting rod (6) close to the hinged portion of the first fixing sleeve (3) and the second fixing sleeve (4) is connected to the abutting block (8); an end of the abutting block (8) away from the abutting rod (6) is provided with an inclined surface; an end of the abutting block (8) away from the abutting rod (6) abuts against the locking sleeve (9); an inclined surface is provided at one end of the locking sleeve (9) abutting against the abutting block (8); and a clamping block (11) for fixing the fixing rod (5) is mounted on one side of the locking sleeve (9) close to the fixing rod (5).

3. A tunnel ventilation duct fixing device according to claim 1, characterized in that: An axial sliding groove (10) is provided on the outer walls of the first fixing sleeve (3) and the second fixing sleeve (4), and the locking sleeve (9) is installed on the sliding groove (10) and slides along the direction of the sliding groove (10).

4. A tunnel ventilation duct fixing device according to claim 1, characterized in that: The slide groove (10) is a dovetail groove, and the locking sleeve (9) is installed in the slide groove (10) and matches the shape of the slide groove (10).

5. A tunnel ventilation duct fixing device according to claim 1, characterized in that: A first elastic member (12) is mounted on the abutting rod (6), and one end of the first elastic member (12) facing away from the abutting rod (6) is mounted on the locking hole (7); a second elastic member (13) is mounted on the locking sleeve (9), and one end of the second elastic member (13) facing away from the locking sleeve (9) is mounted on the sliding groove (10); a third elastic member (17) is mounted on the fixing rod (5), and one end of the third elastic member (17) facing away from the fixing rod (5) is connected to the first fixing sleeve (3); a fourth elastic member (18) is mounted on the fixing rod (5), and one end of the fourth elastic member (18) facing away from the fixing rod (5) is connected to the second fixing sleeve (4).

6. A tunnel ventilation duct fixing device according to claim 1, characterized in that: The fixing rod (5) is provided with a plurality of clamping grooves (14) which match the shape of the clamping block (11).

7. A tunnel ventilation duct fixing device according to claim 1, characterized in that: An elastic pad (15) is installed at one end of the fixing rod (5) facing away from the locking sleeve (9).

8. A tunnel ventilation duct fixing device according to claim 1, characterized in that: The first fixing sleeve (3) and the second fixing sleeve (4) are provided with holes at the ends away from the hinge, and bolts for locking the first fixing sleeve (3) and the second fixing sleeve (4) are installed in the holes, and a nut is installed at one end of the bolt.

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