Fan support system for immersed tunnel

Abstract

The utility model relates to the technical field of tunnel fans, in particular to a fan support system for an immersed tunnel, which comprises two bent pieces arranged side by side, supporting plates extending oppositely are arranged at the bottoms of the two bent pieces, a suspension beam is positioned between the two bent pieces, two end parts of the suspension beam extend to the upper parts of the supporting plates, and the two ends of the suspension beam are connected with the two bent pieces. Shock absorbers are arranged between the ends of the suspension beam and the supporting plates, supporting legs are connected to the middle of the suspension beam and used for suspending the draught fan, the two ends of the suspension beam are erected on the supporting plates through the shock absorbers, the stability of the suspension beam can be guaranteed, and the situation that the suspension beam falls off from the supporting plates is effectively avoided; vibration loads generated by the fan are transmitted to the two ends of the suspension beam through the supporting legs, the suspension beam can equally divide the vibration loads, the situation that local stress of the suspension beam is too large is avoided, and after the vibration loads are transmitted to the suspension beam, vibration is absorbed through the shock absorbers at the ends of the suspension beam, so that the vibration reduction effect is achieved, the fixing strength of the embedded part is ensured, and the safety of the fan is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel fans, in particular to a fan support system for immersed tunnels. Background Technique

[0002] An immersed tunnel is a tunnel in which tunnel segments are precast on the ground and then sunk into a pre-excavated trench or the bottom of a water body using the immersed tube technology. Subsequently, the segments are connected and sealed. It usually consists of multiple precast tunnel sections, each containing the actual passage of the tunnel. The tunnel sections are connected by joints to form a complete tunnel.

[0003] Currently, jet fans are installed in immersed tunnels for tunnel operation ventilation and fire smoke exhaust under emergency conditions. However, the commonly used installation method for jet fans is to directly weld the embedded blocks on the tunnel vault to the jet fan housing using connecting steel plates or to use bolt connection methods. During operation, the jet fans generate significant vibrations, causing the embedded blocks to gradually become loose, seriously affecting the fixing strength of the embedded blocks, and easily leading to the risk of the tunnel fan falling, posing a great safety hazard to passing vehicles and passengers. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fan support system for immersed tunnels to address the problem in the background technique that conventional jet fans generate significant vibrations during operation, causing the embedded blocks to gradually become loose, easily leading to the risk of the tunnel fan falling, and posing a great safety hazard to passing vehicles and passengers.

[0005] The utility model provides a fan support system for immersed tunnels, which includes two bent members arranged side by side. Both bottoms of the two bent members have support plates extending relatively.

[0006] It further includes a cantilever beam. The cantilever beam is located between the two bent members, and both ends of the cantilever beam extend above the support plates. A shock absorber is provided between the end of the cantilever beam and the support plate. A leg is connected to the middle of the cantilever beam, and the leg is used to suspend the fan.

[0007] The fan support system described in this application includes two bent members arranged side by side. Both bottoms of the two bent members have support plates extending relatively. The suspension beam is located between the two bent members, and both ends of the suspension beam extend above the support plates. A shock absorber is provided between the end of the suspension beam and the support plate. A leg is connected to the middle of the suspension beam, and the leg is used to suspend the fan. The two ends of the suspension beam are supported on the support plates through the shock absorbers, which can ensure the stability of the suspension beam and effectively avoid the situation that the suspension beam falls off the support plate. At the same time, the middle of the suspension beam suspends the fan through the leg. When the fan is running, the vibration load generated by the fan is transmitted to both ends of the suspension beam through the leg, enabling the suspension beam to evenly distribute the vibration load and avoid excessive local stress on the suspension beam. Further, when the fan generates a vibration load during operation, after the vibration load is transmitted to the suspension beam, the shock absorber at the end of the suspension beam absorbs the vibration, thereby achieving the vibration reduction effect, keeping the fan stable during operation, reducing the vibration transmitted from the fan to the embedded part, ensuring the fixing strength of the embedded part, and increasing the safety of the fan.

[0008] Preferably, the suspension beams are arranged at intervals along the length direction of the bent members, and a shock absorber is provided between each suspension beam and the support plate.

[0009] Preferably, the number of the suspension beams is not less than 2.

[0010] Preferably, the top of the shock absorber is fixedly connected to the bottom of the suspension beam, and the bottom of the shock absorber is fixedly connected to the support plate.

[0011] Preferably, the bent member further includes a connecting plate. One end of the connecting plate is connected to the support plate, and the other end of the connecting plate is used to be fixed on the top of the tunnel.

[0012] Preferably, it further includes a first embedded part, and the first embedded part is used to be embedded in the top of the tunnel;

[0013] Both ends of the connecting plate have convex plates extending upward, and a concave area is formed between the two convex plates. The convex plates are connected to the first embedded part.

[0014] Preferably, stiffening plates are also arranged at intervals on the bent member.

[0015] Preferably, it further includes two groups of seismic support groups, and the seismic support groups are arranged on the side of the bent member away from the suspension beam;

[0016] The seismic support group can suspend the bent member.

[0017] Preferably, each group of the seismic support groups includes a plurality of seismic support hangers. One end of the seismic support hanger is used to be fixed on the top of the tunnel, and the other end of the seismic support hanger is connected to the bent member;

[0018] The installation axes of at least two of the seismic suspension brackets are perpendicular to each other.

[0019] Preferably, the seismic suspension bracket includes a base, an installation rod, a connecting seat, a telescopic arm, and an installation seat arranged in sequence. The base is connected to the side of the bending member away from the cantilever beam. One end of the installation rod is detachably installed on the base, and the other end of the installation rod is connected with the connecting seat. The connecting seat is hinged to one end of the telescopic arm, and the other end of the telescopic arm is hinged to the installation seat. The installation seat is used to be fixed on the tunnel top.

[0020] Compared with the prior art, the beneficial effects of the present utility model are:

[0021] The fan support system described in this application includes two bending members arranged side by side. Both bottoms of the two bending members have support plates extending relatively. The cantilever beam is located between the two bending members, and both ends of the cantilever beam extend above the support plates. A shock absorber is arranged between the end of the cantilever beam and the support plate. A support leg is connected to the middle of the cantilever beam. The support leg is used to suspend the fan. Both ends of the cantilever beam are supported on the support plates through shock absorbers, which can ensure the stability of the cantilever beam and effectively avoid the situation that the cantilever beam falls from the support plate. At the same time, the middle of the cantilever beam suspends the fan through the support leg. When the fan is running, the vibration load generated by the fan is transmitted to both ends of the cantilever beam through the support leg, enabling the cantilever beam to evenly distribute the vibration load and avoiding excessive local stress on the cantilever beam. Further, when the fan generates a vibration load during operation, after the vibration load is transmitted to the cantilever beam, the shock absorber at the end of the cantilever beam absorbs the vibration, thereby achieving a vibration reduction effect, enabling the fan to remain stable during operation, reducing the vibration transmitted by the fan to the embedded part, ensuring the fixing strength of the embedded part, and increasing the safety of the fan. Description of the Drawings

[0022] Figure 1 is a horizontal schematic diagram of the fan support system of this application.

[0023] Figure 2 is Figure 1 a partial enlarged view of point A of

[0024] Figure 3 is a longitudinal schematic diagram of the fan support system of this application.

[0025] Figure 4 is Figure 3 a partial enlarged view of point B of

[0026] Figure 5 is a schematic diagram of the bending member of this application.

[0027] Figure 6 is a preferred structural schematic diagram of the fan support system of this application.

[0028] Figure 7 It is a schematic diagram of the seismic support group of the present application.

[0029] Figure 8 It is a top view of the seismic support group of the present application.

[0030] Figure 9 It is Figure 7 A partial enlarged view of part C of

[0031] Figure 10 It is Figure 8 A partial enlarged view of part D of

[0032] Markings in the figure:

[0033] 1 - Fan, 2 - Bending member, 21 - Support plate, 22 - Connecting plate, 23 - Stiffening plate, 24 - Convex plate, 25 - Concave area, 3 - Cantilever beam, 4 - Leg, 5 - Shock absorber, 6 - First embedded part, 7 - Suspension device, 71 - Safety rope, 72 - Suspension ring, 73 - Rope clip, 74 - Second embedded part, 75 - Lifting lug, 8 - Seismic support group, 81 - Seismic support and hanger, 811 - Base, 812 - Installation rod, 813 - Connecting seat, 814 - Telescopic arm, 8141 - First rod, 8142 - Second rod, 815 - Installation seat. Specific embodiments

[0034] The following further describes the present utility model in detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the above - mentioned subject matter of the present utility model to the following embodiments. All technologies implemented based on the content of the present utility model belong to the scope of the present utility model.

[0035] In the description of the specific embodiments of the present utility model, without special explanation, the expression terms of orientation or positional relationship such as "up", "down", "left", "right", "center", "inside", "outside", etc. are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product / equipment / device of the present utility model is usually placed. These terms of orientation or positional relationship are only for the convenience of describing the solution of the present utility model or simplifying the description in specific embodiments, facilitating technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship. Therefore, it should not be construed as a limitation to the present utility model.

[0036] In addition, when terms such as "horizontal", "vertical", "hanging", "parallel" appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but it can be slightly inclined or deviated. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in directions such as "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably within ±8% of the error / deviation, more preferably within ±6% of the error / deviation, more preferably within ±5% of the error / deviation, more preferably within ±4% of the error / deviation. As long as the corresponding device / component / element is within the error / deviation range, it can still perform its function in the solution of the present utility model.

[0037] In addition, when expressions such as "first", "second", "third", etc. appear in the terms, they are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0038] In addition, in the description of the embodiments of the present utility model, "several", "multiple", "a number of" represent at least 2. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even can be a situation of more than 9.

[0039] In addition, in the description of the technical solution of the present utility model, unless otherwise clearly specified / defined / restricted, when terms such as "set", "installed", "connected", "coupled", "provided with", "laid", "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be connection means commonly used in the art such as welding, riveting, bolting, screw connection, etc. This connection can be a mechanical connection, an electrical connection or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements.

[0040] Embodiment 1

[0041] As Figures 1-3 shown, a fan support system for a immersed tube tunnel described in this embodiment includes two bent members 2 arranged side by side, and both bottoms of the two bent members 2 have support plates 21 extending relatively;

[0042] It further includes a cantilever beam 3. The cantilever beam 3 is located between the two bent members 2, and both ends of the cantilever beam 3 extend above the support plates 21. A shock absorber 5 is arranged between the end of the cantilever beam 3 and the support plate 21. A support leg 4 is connected to the middle of the cantilever beam 3, and the support leg 4 is used to suspend the fan 1.

[0043] Among them, both bottoms of the two bending members 2 have support plates 21 that extend relatively. It means that the support plate 21 of one bending member 2 extends towards the other bending member 2, so that the support plate 21 of the bending member 2 is located in the area between the two bending members 2;

[0044] Both ends of the cantilever beam 3 are supported on the support plate 21 through shock absorbers 5, which can ensure the stability of the cantilever beam 3 and effectively avoid the situation that the cantilever beam 3 falls off the support plate 21. At the same time, the middle part of the cantilever beam 3 suspends the fan 1 through the support leg 4. When the fan 1 is running, the vibration load generated by the fan 1 is transmitted to both ends of the cantilever beam 3 through the support leg 4, so that the cantilever beam 3 can evenly distribute the vibration load and avoid excessive local stress on the cantilever beam 3. Further, when the fan 1 generates a vibration load during operation, after the vibration load is transmitted to the cantilever beam 3, the shock absorber 5 at the end of the cantilever beam 3 absorbs the vibration, so as to achieve the vibration reduction effect, make the fan 1 keep stable during operation, reduce the vibration transmitted by the fan 1 to the embedded part, ensure the fixing strength of the embedded part, and increase the safety of the fan 1.

[0045] In one or several embodiments, as Figure 3 shown, the cantilever beams 3 are arranged at intervals along the length direction of the bending member 2, and a shock absorber 5 is arranged between each cantilever beam 3 and the support plate 21.

[0046] By arranging multiple cantilever beams 3 to suspend the fan 1, not only can the fan 1 be suspended more stably, but also the vibration reduction effect can be further enhanced.

[0047] In an optional embodiment, the number of the cantilever beams 3 is not less than 2.

[0048] In an optional embodiment, as Figure 2 shown, the top of the shock absorber 5 is fixedly connected to the bottom of the cantilever beam 3, and the bottom of the shock absorber 5 is fixedly connected to the support plate 21. Among them, the end of the cantilever beam 3 is fixedly connected to the top of the shock absorber 5 through bolts, and the support plate 21 is fixedly connected to the bottom of the shock absorber 5 through bolts, so as to ensure that the support plate 21 can support the cantilever beam 3.

[0049] In one or several embodiments, as Figure 2 shown, the bending member 2 further includes a connecting plate 22. One end of the connecting plate 22 is connected to the support plate 21, and the other end of the connecting plate 22 is used for fixing on the top of the tunnel.

[0050] Among them, the connecting plate 22 and the support plate 21 form a folded line shape. The support plate 21 is arranged parallel to the top surface of the tunnel to better support the cantilever beam 3; the connecting plate 22 is perpendicular to the top surface of the tunnel to be fixed on the top of the tunnel.

[0051] In an optional embodiment, the connecting plate 22 and the support plate 21 can be bent from a single steel plate.

[0052] In an alternative embodiment, it further includes a first embedded part 6 for being embedded in the top of the tunnel.

[0053] Both ends of the connecting plate 22 have convex plates 24 extending upward, and a concave area 25 is formed between the two convex plates 24. The convex plates 24 are connected to the first embedded part 6.

[0054] By embedding the first embedded part 6 in the top of the tunnel and connecting the connecting plate 22 to the first embedded part 6 through the convex plates 24, it is convenient to fix the bending part 2 on the first embedded part 6, and then install and suspend the fan 1.

[0055] Furthermore, a concave area 25 is formed between the two convex plates 24. After the convex plates 24 are connected to the first embedded part 6, the rest of the connecting plate 22 does not contact the top of the tunnel, avoiding the situation that when the fan 1 vibrates, there is an interaction force due to the contact between the bending part 2 and the top surface of the tunnel, resulting in affecting the fixing strength of the first embedded part 6, which is beneficial to maintaining the stability of the first embedded part 6.

[0056] In an alternative embodiment, as Figure 5 shown, stiffening plates 23 are also arranged at intervals on the bending part 2 to enhance the stiffness of the bending part 2 through the stiffening plates 23.

[0057] In an alternative embodiment, the shock absorber 5 is a ZT type spring shock absorber.

[0058] In an alternative embodiment, the fan 1 includes a jet fan, an axial flow fan, and a centrifugal fan.

[0059] In one or several embodiments, as Figure 3 、 Figure 4 shown, it further includes a suspension device 7. The suspension device 7 is arranged at both ends of the fan 1 at intervals along the length direction of the fan 1. The front and rear ends of the fan 1 are suspended through the suspension device 7 to further reduce the vibration load of the fan 1 and also ensure the stability of the fan 1 during operation.

[0060] In an alternative embodiment, as Figure 4 shown, the suspension device 7 includes a safety rope 71, a lifting ring 72, a rope clamp 73, a second embedded part 74, and a lifting lug 75. Among them, the second embedded part 74 is embedded in the top of the tunnel, the lifting lug 75 is connected to the second embedded part 74, the lifting ring 72 is connected to the outer shell of the fan 1, one end of the safety rope 71 is tied to the lifting lug 75, and one end of the safety rope 71 is tied to the lifting ring 72, so as to suspend the ends of the fan 1.

[0061] Embodiment 2

[0062] As Figures 6-10As shown, on the basis of Embodiment 1, a fan support system for a immersed tube tunnel described in this embodiment further includes two groups of seismic support groups 8, and the seismic support groups 8 are arranged on the side of the bending member 2 away from the cantilever beam 3;

[0063] The seismic support group 8 can hang the bending member 2

[0064] During an earthquake, when the embedded parts on the top of the tunnel fall off, the bending member 2 is hung by the seismic support group 8, so as to prevent the fan 1 from falling and causing safety risks.

[0065] In an optional implementation manner, as Figure 7 、 Figure 8 shown, each group of seismic support groups 8 includes a plurality of seismic support hangers 81. One end of the seismic support hanger 81 is used for fixing on the top of the tunnel, and the other end of the seismic support hanger 81 is connected to the bending member 2;

[0066] In each group of seismic support groups 8, the installation axes of at least two seismic support hangers 81 are perpendicular to each other.

[0067] One end of the seismic support hanger 81 is used for fixing on the top of the tunnel, and the other end of the seismic support hanger 81 is connected to the bending member 2. When an earthquake occurs, after the embedded parts fall off from the top of the tunnel, the bending member 2 is hung by a plurality of seismic support hangers 81;

[0068] Further, as Figure 8 shown, in each group of seismic support groups 8, the installation axes of at least two seismic support hangers 81 are perpendicular to each other, so as to hang the bending member 2 from two directions, so as to ensure that when the bending member 2 is hung, the bending member 2 can remain relatively stable and will not shake randomly.

[0069] In an optional implementation manner, as Figure 9 shown, the seismic support hanger 81 includes a base 811, an installation rod 812, a connection seat 813, a telescopic arm 814 and an installation seat 815 arranged in sequence. The base 811 is connected to the side of the bending member 2 away from the cantilever beam 3. One end of the installation rod 812 is detachably installed on the base 811, and the other end of the installation rod 812 is connected with a connection seat 813. The connection seat 813 is hinged to one end of the telescopic arm 814, and the other end of the telescopic arm 814 is hinged to the installation seat 815. The installation seat 815 is used for fixing on the top of the tunnel.

[0070] Among them, the installation rod 812 is detachably installed on the base 811, which is convenient for adjusting the position of the installation rod 812 on the base 811, so as to realize the adjustment of the upper and lower installation heights;

[0071] One end of the telescopic arm 814 is hinged to the connecting seat 813, and the other end of the telescopic arm 814 is hinged to the mounting seat 815, so that during installation, by swinging the telescopic arm 814 and the mounting seat 815, the slope of the tunnel top surface can be adapted to achieve rapid installation.

[0072] In an alternative embodiment, such as Figure 10 shown, the telescopic arm 814 includes a first rod 8141 and a second rod 8142. The second rod 8142 is slidably disposed inside the first rod 8141, and fixing holes are formed in both the second rod 8142 and the first rod 8141. When the telescopic arm 814 is installed, by adjusting the relative lengths of the first rod 8141 and the second rod 8142, and then passing bolts through the fixing holes to fix the second rod 8142 and the first rod 8141 together. When different lengths of the telescopic arm 814 are required, adjust the relative lengths between the first rod 8141 and the second rod 8142, and then fix the first rod 8141 and the second rod 8142.

[0073] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fan support system for an immersed tube tunnel, characterized in that: It comprises two bending pieces (2) arranged side by side, and the bottoms of the two bending pieces (2) are provided with supporting plates (21) extending relative to each other; It also includes a suspension beam (3), the suspension beam (3) is located between the two bending parts (2), and both ends of the suspension beam (3) extend above the support plate (21), a shock absorber (5) is provided between the end of the suspension beam (3) and the support plate (21), and a support leg (4) is connected to the middle of the suspension beam (3), and the support leg (4) is used to suspend the fan (1).

2. A fan support system for an immersed tube tunnel according to claim 1, characterized in that: The suspension beams (3) are arranged at intervals along the length direction of the bending member (2), and the shock absorber (5) is arranged between each suspension beam (3) and the support plate (21).

3. A fan support system for an immersed tube tunnel according to claim 2, characterized in that: The number of the suspension beams (3) is no less than 2.

4. A fan support system for an immersed tube tunnel according to claim 1, characterized in that: The top of the shock absorber (5) is fixedly connected to the bottom of the suspension beam (3), and the bottom of the shock absorber (5) is fixedly connected to the support plate (21).

5. The fan support system for an immersed tube tunnel according to claim 1, characterized in that: The bending member (2) further comprises a connecting plate (22), one end of the connecting plate (22) being connected to the supporting plate (21), and the other end of the connecting plate (22) being used for fixing on the top of the tunnel.

6. A fan support system for an immersed tube tunnel according to claim 5, characterized in that: It also includes a first embedded part (6), wherein the first embedded part (6) is used to be embedded in the top of the tunnel; Both ends of the connection plate (22) are provided with convex plates (24) extending upwards, a concave area (25) is formed between the two convex plates (24), and the convex plates (24) are connected to the first embedded part (6).

7. A fan support system for an immersed tube tunnel according to claim 5, characterized in that: Stiffening plates (23) are also arranged at intervals on the bending member (2).

8. A fan support system for an immersed tube tunnel according to any one of claims 1 to 7, characterized in that: It also comprises two groups of anti-seismic support groups (8), wherein the anti-seismic support groups (8) are arranged on a side of the bending member (2) away from the suspension beam (3); The anti-seismic support group (8) is capable of suspending the bending member (2).

9. A fan support system for an immersed tube tunnel according to claim 8, characterized in that: Each group of the seismic support groups (8) comprises a plurality of seismic support brackets (81), one end of the seismic support bracket (81) is used to be fixed on the top of the tunnel, and the other end of the seismic support bracket (81) is connected to the bending member (2); The installation axes of at least two of the anti-seismic support and hanger brackets (81) are perpendicular to each other.

10. A fan support system for an immersed tube tunnel according to claim 9, characterized in that: The anti-seismic support and hanger (81) comprises a base (811), a mounting rod (812), a connecting seat (813), a telescopic arm (814) and a mounting seat (815) which are arranged in sequence, wherein the base (811) is connected to a side of the bending member (2) away from the suspension beam (3), one end of the mounting rod (812) is detachably mounted on the base (811), the other end of the mounting rod (812) is connected to the connecting seat (813), the connecting seat (813) is hinged to one end of the telescopic arm (814), the other end of the telescopic arm (814) is hinged to the mounting seat (815), and the mounting seat (815) is used to be fixed on the top of the tunnel.

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