A tunnel cable suspension damping hanger

Abstract

This invention belongs to the field of cable installation technology, specifically a cable suspension vibration damping bracket for tunnels, including a suspension assembly and a clamping assembly. The suspension assembly includes a flange device and a suspension device, and the clamping assembly includes an adjustment device and a clamping device. The flange device includes a flange and a fixed anchor rod set on the flange. The suspension device includes a T-shaped mounting rod and a connecting rod. An adjustment groove is opened through the upper part of the T-shaped mounting rod, and the connecting rod is inserted into the adjustment groove. Mounting parts are symmetrically arranged at both ends of the connecting rod. The main body of the mounting part is L-shaped and a nut is installed at the bottom. A compression spring column is arranged above the adjustment groove, and the bottom end of the compression spring column is installed on the connecting rod. This solution provides a cable suspension vibration damping bracket for tunnels that combines high-efficiency vibration damping, convenient installation, and stable durability. Through the multi-stage composite vibration damping structure of compression spring column + corrugated pad and filling adhesive, it can effectively absorb the vibration energy in the tunnel, including longitudinal displacement, lateral sway and high-frequency resonance.

Description

Technical Field

[0001] This invention relates to the field of cable installation technology, specifically to a cable suspension and vibration damping bracket for tunnels. Background Technology

[0002] In tunnel engineering (such as railway tunnels, highway tunnels, and subway tunnels), cables serve as the core carriers for energy transmission and signal communication, and their laying stability directly affects the safety and reliability of tunnel operation. Currently, cables in tunnels are mostly installed using a suspended installation method, that is, the cables are fixed to the tunnel ceiling or side walls using hangers to save space and avoid interference from ground equipment.

[0003] Existing cable suspension devices have the following problems in practical applications:

[0004] 1) Inconvenient installation and adjustment: Existing clamping devices mostly rely on bolted connections. During installation, tools such as wrenches are needed to tighten them one by one. Moreover, the clamping force is difficult to control precisely. Too tight a clamp can damage the cable, while too loose a clamp can cause the cable to sway, which increases construction costs and time.

[0005] 2) Insufficient vibration damping performance: The tunnel environment is subject to continuous vibration (such as structural resonance caused by train passage and vehicle movement, slight shaking caused by geological activity, etc.). Traditional cable hangers are mostly rigid structures and lack effective vibration damping and buffering designs. Long-term vibration will lead to increased friction between the cable and the hanger, causing wear of the cable insulation layer, fatigue fracture of the internal wire core, and even safety hazards such as short circuits and communication interruptions.

[0006] For the reasons mentioned above, we propose a cable suspension and vibration damping bracket for tunnels. Summary of the Invention

[0007] The purpose of this invention is to provide a cable suspension and vibration damping bracket for tunnels to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a cable suspension vibration damping bracket in a tunnel, comprising a suspension assembly and a clamping assembly. The suspension assembly includes a flange device and a suspension device, and the clamping assembly includes an adjustment device and a clamping device. The flange device includes a flange and a fixed anchor rod disposed on the flange, and the suspension device includes a T-shaped mounting rod and a connecting rod.

[0009] The upper part of the T-shaped mounting rod has an adjustment groove, and the connecting rod is inserted into the adjustment groove. The two ends of the connecting rod are symmetrically equipped with mounting parts. The main body of the mounting part is L-shaped and a nut is installed at the bottom. A compression spring column is set above the adjustment groove, and the bottom end of the compression spring column is installed on the connecting rod. The clamping device includes symmetrically arranged cable clamps. Each cable clamp includes two clamping rings, one upper and one lower. An energy absorption device is installed at the bottom of the lower clamping ring.

[0010] The adjustment device is located at the bottom of the T-shaped mounting rod. The adjustment device includes a fixed frame, an adjustment rod, and an adjustment handle. The top of the fixed frame is mounted on the T-shaped mounting rod. The adjustment rod is inserted into the middle of the fixed frame, and the top of the adjustment rod is connected to the connecting rod.

[0011] The bottom of the cable clamp is equipped with a shock-absorbing base, which is movably installed inside the energy-absorbing device and transmits the force generated by the shaking to the energy-absorbing device for conversion.

[0012] Preferably, the flange device is fixed upward to the tunnel roof, the T-shaped mounting rod is inverted and fixed to the bottom of the flange, and the connecting rod extends to both sides.

[0013] Preferably, the energy-absorbing device is fixed at both ends of the T-shaped mounting rod; the upper clamping ring is movably mounted, and a mounting bolt is installed on the top of the clamping ring. The mounting bolt moves upward by tightening and is screwed upward into the nut of the mounting part, so that the upper clamping ring and the connecting rod are linked together and have the function of elastic opening and closing; the bottom of the mounting bolt is provided with a limit head, and the bottom end of the limit head is a rubber pad, which assists in clamping the cable downward.

[0014] Preferably, when the adjusting rod moves upward, it drives the connecting rod upward synchronously, and at the same time pulls the upper clamping rings on both sides upward. After opening the cable clamp, the cable is placed in the clamping ring to complete the installation. When the adjusting rod loses its force, the squeeze spring column pushes the connecting rod downward, so that the upper clamping ring and the lower clamping ring close, and the cable clamp completes the clamping and installation of the cable.

[0015] Preferably, an adjustment handle is installed on the fixing frame. The adjustment handle is a pinch handle, and the lower part of the adjustment rod is inserted into the adjustment handle. When the adjustment handle is pinched, the adjustment rod is driven upward. A return spring is installed between the top of the adjustment handle and the fixing frame. After the adjustment handle loses its force, it returns to its initial state under the action of the return spring, and works together with the compression spring column above to apply force to the cable clamp.

[0016] Preferably, the energy-absorbing device includes a mounting shell and an energy-absorbing mechanism disposed within the mounting shell. The mounting shell is fixed to both ends of the T-shaped mounting rod. The energy-absorbing mechanism includes multiple parallel corrugated pads and gaskets. The corrugated pads are made of rubber and can absorb and buffer forces when compressed inward.

[0017] Preferably, the corrugated pad is provided with pads at both the top and bottom, and multiple pads are arranged vertically to form a pad plate. A filling gap is reserved between each layer of pads, and the filling gap is filled with filler glue. The upper pad plate is located at the bottom of the shock-absorbing base. The force generated by the shaking of the cable clamp is transmitted to the energy absorption device, and then absorbed and buffered by the pad plate and the corrugated pad.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This solution provides a cable suspension shock absorber bracket for tunnels that combines high-efficiency vibration reduction, convenient installation, and stable durability.

[0020] 1) Multi-stage vibration damping for cable safety: The multi-stage composite vibration damping structure, consisting of extruded spring columns (longitudinal damping), corrugated pads, and filler rubber (lateral / radial damping), effectively absorbs vibration energy within the tunnel (including longitudinal displacement, lateral sway, and high-frequency resonance). Specifically, the extruded spring columns elastically buffer the longitudinal force transmitted from the top, the rubber corrugated pads of the energy-absorbing device absorb vertical impacts through compression deformation, and the filler rubber dissipates horizontal high-frequency vibrations through viscous internal energy dissipation, significantly reducing cable wear and fatigue damage caused by vibration.

[0021] 2) Convenient adjustment and improved construction efficiency: The pinch-type adjustment handle and linkage clamping mechanism enable tool-free and quick operation. Pinching the handle will raise the connecting rod through the adjustment rod, and open the cable clamps on both sides at the same time. After placing the cable, release the handle, and the clamping ring will automatically close with the help of spring force. The entire installation process only requires one person to operate.

[0022] While ensuring stable cable suspension, it achieves multiple benefits such as shock absorption, convenience, durability, and compatibility, making it suitable for cable laying in various tunnel environments and possessing significant practical value and promising prospects for promotion. Attached Figure Description

[0023] Figure 1 This is a front view of the present invention.

[0024] Figure 2 for Figure 1 Left view.

[0025] Figure 3 This is a perspective view of the present invention.

[0026] Figure 4 This is a schematic diagram of the clamping device and energy absorption device of the present invention.

[0027] Figure 5 This is a schematic diagram of the energy absorption device mechanism of the present invention.

[0028] In the diagram: 100 flange device, 101 fixed anchor bolt;

[0029] 200 Suspension device, 201 Adjustment groove, 202 Compression spring column, 203 Connecting rod, 204 Mounting component;

[0030] 300 Adjustment device, 301 Fixing bracket, 302 Adjustment rod, 303 Adjustment handle;

[0031] 400 Clamping device, 401 Cable clamp, 402 Mounting bolt, 403 Vibration damping base;

[0032] 500 Energy Absorption Device, 501 Corrugated Pad, 502 Gasket, 503 Gap Filler. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Example

[0034] Please see Figure 1-5 The present invention provides the following technical solution:

[0035] A cable suspension vibration damping bracket for tunnels includes a suspension assembly and a clamping assembly. The suspension assembly is responsible for fixing the overall structure to the tunnel roof and for providing longitudinal vibration damping. The suspension assembly includes a flange device 100 and a suspension device 200. The clamping assembly includes an adjustment device 300 and a clamping device 400.

[0036] The flange device 100 includes a flange and a fixed anchor rod 101 mounted on the flange. The flange device 100 is fixed upward to the tunnel roof. The suspension device 200 includes a T-shaped mounting rod and a connecting rod 203. The fixed anchor rod 101 uses high-strength expansion bolts, which are equidistantly distributed along the circumference of the flange. The bolt tail is provided with a tapered expansion head. After being inserted into the roof, it is tightened with a torque wrench to ensure that there is no loose gap with the roof. An elastic buffer pad is set between the flange and the roof to reduce the impact of roof vibration.

[0037] The T-shaped mounting rod is inverted and fixed to the bottom of the flange. An adjustment groove 201 is provided through the upper part of the T-shaped mounting rod. The connecting rod 203 is inserted into the adjustment groove 201 and extends to both sides. The two ends of the connecting rod 203 are symmetrically provided with mounting parts 204. The main body of the mounting part 204 is L-shaped, and a nut is installed at the bottom of the mounting part 204.

[0038] A compression spring post 202 is provided above the adjustment groove 201, and the bottom end of the compression spring post 202 is installed on the connecting rod 203, so that the compression spring post 202 continuously applies downward pressure to the connecting rod 203.

[0039] The clamping device 400 includes symmetrically arranged cable clamps 401. Each cable clamp 401 includes upper and lower clamping rings. An energy-absorbing device 500 is installed at the bottom of the lower clamping ring and is fixed to both ends of the T-shaped mounting rod. The upper clamping ring is movably installed and a mounting bolt 402 is installed at the top of the clamping ring. The mounting bolt 402 moves upward by being screwed and is screwed upward into the nut of the mounting part 204, so that the upper clamping ring and the connecting rod 203 form a linkage clamping mechanism with elastic opening and closing function.

[0040] The bottom of the mounting bolt 402 is provided with a limit head to facilitate manual adjustment of the mounting bolt 402, and the bottom end of the limit head is a rubber pad, which assists in clamping the cable downward.

[0041] The adjustment device 300 is located at the bottom of the T-shaped mounting rod. The adjustment device 300 includes a fixing frame 301, an adjustment rod 302, and an adjustment handle 303. The top of the fixing frame 301 is provided with a mounting plate, which is screwed onto the T-shaped mounting rod.

[0042] The adjusting rod 302 is inserted into the middle of the fixing frame 301, and the adjusting rod 302 is inserted upward into the T-shaped mounting rod, and the top of the adjusting rod 302 is connected to the connecting rod 203.

[0043] When the adjusting rod 302 moves upward, it drives the connecting rod 203 to move upward in sync. At the same time, it pulls the upper clamping rings on both sides upward, opens the cable clamp 401, and places the cable in the clamping ring to complete the installation. When the adjusting rod 302 loses its force, it squeezes the spring column 202 to push the connecting rod 203 downward, so that the upper clamping ring and the lower clamping ring close, and the cable clamp 401 completes the clamping and installation of the cable.

[0044] An adjustment handle 303 is installed on the fixing frame 301. The adjustment handle 303 is a pinch handle, and the lower part of the adjustment rod 302 is inserted into the adjustment handle 303. When the adjustment handle 303 is pinched, the adjustment rod 302 is driven upward, which can easily open the cable clamp 401.

[0045] A return spring is installed between the top of the adjusting handle 303 and the fixed frame 301. After the adjusting handle 303 loses its force, it returns to its initial state under the action of the return spring, and works together with the compression spring column 202 above to apply force to the cable clamp 401, making the cable clamping more stable. The convenient adjustment method of the adjusting device 300 makes cable installation unnecessary without the need for additional tools, reducing installation steps and improving installation efficiency.

[0046] The bottom of the cable clamp 401 is provided with a shock-absorbing base 403, which is movably disposed within the energy-absorbing device 500. The energy-absorbing device 500 includes a mounting shell and an energy-absorbing mechanism disposed within the mounting shell. The mounting shell is fixed to both ends of the T-shaped mounting rod.

[0047] The energy-absorbing mechanism includes multiple parallel-arranged corrugated pads 501 and gaskets 502. The corrugated pads 501 are made of rubber and can absorb and buffer forces when compressed inward.

[0048] The corrugated pad 501 is provided with pads 502 at both the top and bottom. Multiple pads 502 are arranged vertically to form a pad plate. A filling gap 503 is reserved between each layer of pads 502, and the filling gap 503 is filled with filling adhesive. The upper pad plate is located at the bottom of the shock-absorbing base 403. When the cable clamp 401 is subjected to force due to shaking or other reasons, the force is transmitted to the energy absorption device 500, and then absorbed and buffered by the pad plate and the corrugated pad 501.

[0049] The flange device 100 anchors the entire bracket to the tunnel roof via fixed anchor bolts 101, forming a rigid load-bearing foundation. The inverted T-shaped mounting rod serves as the main load-bearing structure, transferring the top load downwards to the clamping components, ensuring the stability of the overall structure.

[0050] Within the adjustment groove 201 of the T-shaped mounting rod, the compression spring column 202 continuously applies downward pressure to the connecting rod 203, keeping the connecting rod 203 in a pre-tightened state. When the tunnel roof undergoes longitudinal displacement due to vibration (such as vehicle traffic or geological activity), the compression spring column 202 absorbs energy through its own expansion and contraction, reducing the direct transmission of vibration to the cable and achieving primary longitudinal vibration reduction.

[0051] The upper clamping ring of the clamping device 400 is linked to the mounting part 204 and the connecting rod 203 of the suspension device 200 through the mounting bolt 402. The upper clamping ring rises and falls with the turning of the mounting bolt 402. The lower clamping ring is fixed to the top of the energy absorption device 500. When the cable is placed in the ring, the compression spring column 202 applies downward pressure through the connecting rod 203, so that the upper clamping ring automatically fits the cable and forms an elastic clamping state, which avoids damage to the cable due to excessive tightness and prevents shaking due to excessive looseness.

[0052] The adjusting device 300 drives the adjusting rod 302 to rise and fall through the adjusting handle 303, which in turn drives the connecting rod 203 to move upward against the pressure of the compression spring column 202. At this time, the upper clamping ring rises synchronously with the mounting bolt 402, and the cable clamp 401 opens. After the adjusting handle 303 is released, the return spring and the compression spring column 202 work together to make the clamping ring close automatically, realizing tool-free quick loading and unloading and simplifying the installation process.

[0053] The initial height of the upper clamping ring can be adjusted by tightening the mounting bolt 402. Combined with the flexible contact of the bottom rubber pad, it can accommodate cables of different diameters and adjust the clamping force by controlling the screw-in depth of the bolt, thus preventing the cable from deforming due to long-term stress.

[0054] The shock-absorbing base 403 at the bottom of the clamping device is connected to the energy-absorbing device 500. When the cable vibrates and sways laterally or radially, the force is transmitted to the energy-absorbing device 500 through the shock-absorbing base 403. The rubber corrugated pad 501 absorbs the vertical impact force through compression deformation. The filling gap 503 is filled with a silicone-like filler, which buffers the high-frequency vibration in the horizontal direction through viscous deformation. The gasket 502 increases friction to prevent relative sliding between components, ensuring a stable energy transfer path and achieving two-stage composite shock absorption.

[0055] The multi-layered structure of the energy-absorbing device 500 converts vibration energy into the elastic potential energy of the rubber and the viscous internal energy of the filler rubber, ultimately reducing the vibration amplitude transmitted to the cable and protecting the cable insulation layer and internal structure from damage.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cable suspension vibration damping bracket for tunnels, comprising a suspension assembly and a clamping assembly, characterized in that: The suspension assembly includes a flange device (100) and a suspension device (200), and the clamping assembly includes an adjusting device (300) and a clamping device (400); the flange device (100) includes a flange and a fixed anchor rod (101) disposed on the flange, and the suspension device (200) includes a T-shaped mounting rod and a connecting rod (203). The upper part of the T-shaped mounting rod is provided with an adjustment groove (201), and the connecting rod (203) is inserted into the adjustment groove (201). The two ends of the connecting rod (203) are symmetrically provided with mounting parts (204). The main body of the mounting part (204) is L-shaped and a nut is installed at the bottom. A compression spring column (202) is provided above the adjustment groove (201), and the bottom end of the compression spring column (202) is installed on the connecting rod (203). The clamping device (400) includes symmetrically arranged cable clamps (401). Each cable clamp (401) includes two clamping rings, one upper and one lower. An energy absorption device (500) is installed at the bottom of the lower clamping ring. The adjustment device (300) is located at the bottom of the T-shaped mounting rod. The adjustment device (300) includes a fixed frame (301), an adjustment rod (302), and an adjustment handle (303). The top of the fixed frame (301) is mounted on the T-shaped mounting rod. The adjustment rod (302) is inserted into the middle of the fixed frame (301), and the top of the adjustment rod (302) is connected to the connecting rod (203). The bottom of the cable clamp (401) is provided with a shock-absorbing base (403), which is movably disposed in the energy-absorbing device (500) and transmits the force generated by the shaking to the energy-absorbing device (500) for conversion.

2. The cable suspension vibration damping bracket in a tunnel according to claim 1, characterized in that: The flange device (100) is fixed upward on the tunnel roof, the T-shaped mounting rod is inverted and fixed to the bottom of the flange, and the connecting rod (203) extends to both sides.

3. The cable suspension vibration damping bracket in a tunnel according to claim 1, characterized in that: The energy absorption device (500) is fixed at both ends of the T-shaped mounting rod; the upper clamping ring is movably installed, and the top of the clamping ring is equipped with a mounting bolt (402). The mounting bolt (402) moves upward by screwing, and the mounting bolt (402) is screwed upward into the nut of the mounting part (204), so that the upper clamping ring and the connecting rod (203) are linked together and have the function of elastic opening and closing; the bottom of the mounting bolt (402) is provided with a limit head, and the bottom end of the limit head is a rubber pad, which assists in clamping the cable downward.

4. A cable suspension vibration damping bracket for tunnels according to claim 3, characterized in that: When the adjusting rod (302) moves upward, it drives the connecting rod (203) to move upward in sync. At the same time, it pulls the upper clamping rings on both sides upward, opens the cable clamp (401), and places the cable in the clamping ring to complete the installation. When the adjusting rod (302) loses its force, it squeezes the spring column (202) to push the connecting rod (203) downward, so that the upper clamping ring and the lower clamping ring are closed, and the cable clamp (401) completes the clamping and installation of the cable.

5. A cable suspension and vibration damping bracket for tunnels according to claim 4, characterized in that: An adjustment handle (303) is installed on the fixed frame (301). The adjustment handle (303) is a pinch handle, and the lower part of the adjustment rod (302) is inserted into the adjustment handle (303). When the adjustment handle (303) is pinched, the adjustment rod (302) is driven upward. A return spring is installed between the top of the adjustment handle (303) and the fixed frame (301). After the adjustment handle (303) loses its force, it returns to its initial state under the action of the return spring, and works together with the compression spring column (202) above to apply force to the cable clamp (401).

6. A cable suspension vibration damping bracket in a tunnel according to claim 3, characterized in that: The energy-absorbing device (500) includes a mounting shell and an energy-absorbing mechanism disposed within the mounting shell. The mounting shell is fixed to both ends of the T-shaped mounting rod. The energy-absorbing mechanism includes multiple parallel corrugated pads (501) and gaskets (502). The corrugated pads (501) are made of rubber and can absorb and buffer forces when compressed inward.

7. A cable suspension vibration damping bracket for tunnels according to claim 6, characterized in that: The corrugated pad (501) is provided with pads (502) at the top and bottom. Multiple pads (502) are arranged vertically to form a pad plate. A filling gap (503) is reserved between each layer of pads (502), and filling glue is placed in the filling gap (503). The upper pad plate is located at the bottom of the shock-absorbing base (403). The force generated by the shaking of the cable clamp (401) is transmitted to the energy absorption device (500), and then absorbed and buffered by the pad plate and the corrugated pad (501).

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