Cable suspension damping hanger in tunnel

Abstract

The invention belongs to the technical field of cable installation, and particularly relates to a cable suspension damping rack in a tunnel, the cable suspension damping rack comprises a suspension assembly and a clamping assembly, the suspension assembly comprises a flange device and a suspension device, and the clamping assembly comprises an adjusting device and a clamping device; the flange device comprises a flange plate and a fixed anchor rod arranged on the flange plate; the suspension device comprises a T-shaped mounting rod and a connecting rod; an adjusting groove is formed in the upper portion of the T-shaped mounting rod in a penetrating mode, the connecting rod is inserted into the adjusting groove, mounting pieces are symmetrically arranged at the two ends of the connecting rod, mounting piece bodies are L-shaped, and nuts are mounted at the bottoms of the mounting pieces; an extrusion spring column is arranged above the adjusting groove, and the bottom end of the extrusion spring column is mounted on the connecting rod; according to the scheme, the cable suspension damping rack in the tunnel is efficient in damping, convenient to install, stable and durable; vibration energy, including longitudinal displacement, transverse shaking and high-frequency resonance, in the tunnel can be effectively absorbed through a multi-stage composite damping structure of the extrusion spring columns, the corrugated pads and the filling rubber.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable installation, in particular to a tunnel cable suspension damping hanger. BACKGROUND

[0002] In tunnel engineering (such as railway tunnel, highway tunnel, subway tunnel, etc.), as the core carrier of energy transmission and signal communication, the laying stability of cable directly affects the safety and reliability of tunnel operation. At present, the cable in the tunnel is mostly installed by suspension, that is, the cable is fixed to the tunnel top wall or side wall by a hanger to save space and avoid interference from ground equipment.

[0003] The existing cable suspension device has the following problems in actual application: 1) Inconvenient installation and adjustment: The existing clamping device mostly relies on bolt hard connection, which needs to be tightened one by one with the help of tools such as wrench during installation, and the clamping force is difficult to control accurately, which may damage the cable if too tight, or cause the cable to shake if too loose, thereby increasing the construction cost and time.

[0004] 2) Insufficient damping performance: There are continuous vibrations in the tunnel environment (such as structural resonance caused by train passing, vehicle driving, slight shaking caused by geological activity, etc.), and the traditional hanger is mostly a rigid structure without effective damping and buffering design. Long-term vibration will cause the friction between the cable and the hanger to increase, resulting in wear of the cable insulation layer, fatigue fracture of the internal wire core, and even safety hazards such as short circuit and communication interruption.

[0005] Based on the above reasons, we propose a tunnel cable suspension damping hanger. SUMMARY

[0006] The purpose of the present application is to provide a tunnel cable suspension damping hanger to solve the problems raised in the background.

[0007] To achieve the above purpose, the present application provides the following technical scheme: a tunnel cable suspension damping hanger, comprising a suspension assembly and a clamping assembly, the suspension assembly comprising a flange device and a suspension device, and the clamping assembly comprising an adjusting device and a clamping device; the flange device comprises a flange plate and a fixed anchor rod arranged on the flange plate, and the suspension device comprises a T-shaped mounting rod and a connecting rod.

[0008] The upper part of the T-shaped mounting rod is provided with an adjusting slot, and the connecting rod is inserted into the adjusting slot, the two ends of the connecting rod are symmetrically provided with mounting pieces, the mounting pieces are L-shaped and the bottom of each mounting piece is provided with a nut; an extrusion spring column is arranged above the adjusting slot, and the bottom end of the extrusion spring column is mounted on the connecting rod; the clamping device comprises symmetrically arranged cable clamps, each cable clamp comprises upper and lower clamping rings, and the bottom of the lower clamping ring is provided with an energy absorption device.

[0009] The adjusting device is arranged at the bottom of the T-shaped mounting rod, and comprises a fixing frame, an adjusting rod and an adjusting handle; the top of the fixing frame is mounted on the T-shaped mounting rod; the adjusting rod is inserted into the middle of the fixing frame, and the top of the adjusting rod is connected with the connecting rod.

[0010] The bottom of the cable clamp is provided with a damping base which is movably arranged in the energy absorbing device and transmits the force generated by the shaking to the energy absorbing device for conversion.

[0011] Preferably, the flange device is fixed upward on the top wall of the tunnel, the T-shaped mounting rod is inverted and fixed at the bottom of the flange device, and the connecting rod extends to the two sides.

[0012] Preferably, the energy absorbing device is fixed at the two ends of the T-shaped mounting rod; the upper clamping ring is movably mounted, the top of the clamping ring is provided with a mounting bolt, the mounting bolt is moved upward by screwing, and the mounting bolt is screwed upward in the nut of the mounting piece, so that the upper clamping ring is connected with the connecting rod, and the upper clamping ring has the function of elastic opening and closing; the bottom of the mounting bolt is provided with a limiting head, and the bottom end of the limiting head is a rubber pad which assists in clamping the cable downward.

[0013] Preferably, when the adjusting rod moves upward, the connecting rod is synchronously moved upward, and at the same time, the upper clamping rings on the two sides are pulled upward, the cable clamp is opened, the cable is placed in the clamping ring to complete the installation; when the adjusting rod loses the force, the compression spring column pushes the connecting rod downward, so that the upper clamping ring and the lower clamping ring are closed, and the cable clamp completes the clamping installation of the cable.

[0014] Preferably, the adjusting handle is mounted on the fixing frame, the adjusting handle is a pinching handle, the lower part of the adjusting rod is inserted into the adjusting handle, the adjusting handle is pinched to drive the adjusting rod upward; the top of the adjusting handle is provided with a reset spring between the adjusting handle and the fixing frame, the adjusting handle returns to the initial state under the action of the reset spring after losing the force, and the adjusting handle and the compression spring column above jointly act on the cable clamp to exert a force.

[0015] Preferably, the energy absorbing device comprises an installation shell and an energy absorbing mechanism arranged in the installation shell, and the installation shell is fixed at the two ends of the T-shaped mounting rod; the energy absorbing mechanism comprises a plurality of parallel arranged corrugated pads and gaskets, the corrugated pad is made of rubber, and can absorb and buffer the force when compressed inward.

[0016] Preferably, the top and bottom of the corrugated pad are provided with gaskets, a plurality of gaskets are arranged in layers to form a pad, and a filling gap is reserved between each layer of gaskets, and a filling glue is arranged in the filling gap; the upper pad is located at the bottom of the damping base, the force generated by the shaking of the cable clamp is transmitted to the energy absorbing device, and then is absorbed and buffered by the pad and the corrugated pad.

[0017] Compared with the prior art, the beneficial effects of the present application are: The scheme provides a tunnel cable suspension damping hanger with efficient damping, convenient installation and stable durability.

[0018] 1) Multi-stage damping, protecting the safety of the cable: through the multi-stage composite damping structure of the extruded spring column (longitudinal damping) + corrugated pad and filling glue (horizontal / radial damping), the vibration energy in the tunnel (including longitudinal displacement, horizontal shaking and high-frequency resonance) can be effectively absorbed. Among them, the extruded spring column buffers the longitudinal force transmitted by the top through elastic expansion, the rubber corrugated pad of the energy absorption device absorbs vertical impact through compression deformation, and the filling glue dissipates horizontal high-frequency vibration through viscous internal energy, significantly reducing the wear and fatigue damage of the cable due to vibration.

[0019] 2) Convenient adjustment to improve construction efficiency: the pinch type adjustment handle and the linkage clamping mechanism realize tool-free quick operation, the pinch handle can drive the connecting rod to rise through the adjustment rod, synchronously opening the cable clamps on both sides, releasing the handle after placing the cable, and automatically closing the clamping ring with the help of spring force. The entire installation process only needs single-person operation.

[0020] While ensuring stable suspension of the cable, multiple effects of damping, convenience, durability and compatibility are achieved, which is suitable for cable laying in various tunnel environments and has significant practical value and promotion prospects. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a front view of the present application.

[0022] Figure 2 It is Figure 1 Left view.

[0023] Figure 3 It is a perspective view of the present application.

[0024] Figure 4 It is a schematic view of the clamping device and energy absorption device of the present application.

[0025] Figure 5 It is a schematic view of the energy absorption device mechanism of the present application.

[0026] In the figure: 100 flange device, 101 fixed anchor rod; 200 suspension device, 201 adjustment groove, 202 extruded spring column, 203 connecting rod, 204 mounting piece; 300 adjustment device, 301 fixed frame, 302 adjustment rod, 303 adjustment handle; 400 clamping device, 401 cable clamp, 402 mounting bolt, 403 damping base; 500 energy absorption device, 501 corrugated pad, 502 gasket, 503 filling gap. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described in connection with the drawings in the embodiments of the present application. Embodiments

[0028] Please refer to Figures 1-5 The present application provides the following technical solutions: A cable suspension damping hanger in a tunnel comprises a suspension assembly and a clamping assembly; the suspension assembly is responsible for fixing the overall structure to the tunnel top wall and bearing longitudinal damping function, and the suspension assembly comprises a flange device 100 and a suspension device 200, and the clamping assembly comprises an adjusting device 300 and a clamping device 400.

[0029] The flange device 100 comprises a flange plate and a fixed anchor rod 101 arranged on the flange plate, and the flange device 100 is fixed upwardly on the tunnel top wall; the suspension device 200 comprises a T-shaped mounting rod and a connecting rod 203; the fixed anchor rod 101 adopts high-strength expansion bolts, is distributed equidistantly along the circumference of the flange plate, and is provided with a conical expansion head at the tail portion of the bolt, is fastened by a torque wrench after being implanted into the top wall, and ensures no loose gap with the top wall; an elastic buffer pad is arranged between the flange plate and the top wall to reduce the influence of the vibration of the top wall.

[0030] The T-shaped mounting rod is inverted and fixed at the bottom of the flange plate, the upper portion of the T-shaped mounting rod is provided with an adjusting groove 201, the connecting rod 203 is inserted into the adjusting groove 201, and the connecting rod 203 extends to both sides, and the two ends of the connecting rod 203 are symmetrically provided with mounting pieces 204, the mounting pieces 204 are mainly L-shaped, and the bottom of the mounting pieces 204 is provided with a nut.

[0031] An extrusion spring column 202 is arranged above the adjusting groove 201, and the bottom end of the extrusion spring column 202 is mounted on the connecting rod 203, so that the extrusion spring column 202 continuously presses downwardly on the connecting rod 203.

[0032] The clamping device 400 comprises symmetrically arranged cable clamps 401, each of the cable clamps 401 comprises upper and lower clamping rings, the bottom of the lower clamping ring is provided with an energy absorption device 500, and the energy absorption device 500 is fixed at the two ends of the T-shaped mounting rod; the upper clamping ring is movably mounted, the top of the clamping ring is provided with a mounting bolt 402, the mounting bolt 402 is moved upwardly by being screwed, and the mounting bolt 402 is screwed upwardly in the nut of the mounting piece 204, so that the upper clamping ring and the connecting rod 203 form a linkage clamping mechanism and have the function of elastic opening and closing.

[0033] The bottom of the mounting bolt 402 is provided with a limiting head, the bottom end of the limiting head is a rubber pad, and the rubber pad assists in clamping the cable downwardly.

[0034] The adjusting device 300 is arranged at the bottom of the T-shaped mounting rod, and comprises a fixing frame 301, an adjusting rod 302 and an adjusting handle 303.

[0035] The adjusting rod 302 is inserted into the middle part of the fixing frame 301 and is inserted upward into the T-shaped mounting rod, and the top of the adjusting rod 302 is connected with the connecting rod 203.

[0036] When the adjusting rod 302 moves upward, the connecting rod 203 is synchronously moved upward, and at the same time, the upper clamping rings on both sides are pulled upward to open the cable clamp 401, and then the cable is placed in the clamping ring to complete the installation; when the adjusting rod 302 loses the force, the compression spring column 202 pushes 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 installation of the cable.

[0037] The adjusting handle 303 is arranged on the fixing frame 301, and the adjusting handle 303 is a pinch type handle, and the lower part of the adjusting rod 302 is inserted into the adjusting handle 303; when the adjusting handle 303 is pinched, the adjusting rod 302 is driven upward, so that the cable clamp 401 can be conveniently opened.

[0038] The adjusting handle 303 is arranged between the top of the adjusting handle 303 and the fixing frame 301, and a reset spring is arranged between the top of the adjusting handle 303 and the fixing frame 301; when the adjusting handle 303 loses the force, the adjusting handle 303 is restored to the initial state under the driving of the reset spring, and the reset spring and the compression spring column 202 above jointly act on the cable clamp 401 to exert a force on the cable clamp 401, so that the clamping of the cable is more stable; through the convenient adjusting mode of the adjusting device 300, the cable installation does not need to prepare additional tools, the installation steps are reduced, and the installation efficiency is improved.

[0039] The bottom of the cable clamp 401 is provided with a damping base 403, and the damping base 403 is movably arranged in an energy absorption device 500; the energy absorption device 500 comprises a mounting shell and an energy absorption mechanism arranged in the mounting shell, and the mounting shell is fixed at both ends of the T-shaped mounting rod.

[0040] The energy absorption mechanism comprises a plurality of parallel arranged corrugated pads 501 and gaskets 502; the corrugated pads 501 are made of rubber and can absorb and buffer the force when compressed inward.

[0041] The top and bottom of the corrugated pad 501 are provided with the gasket 502, and a plurality of gaskets 502 are arranged in layers to form a pad plate; a filling gap 503 is reserved between each layer of gaskets 502, and the filling gap 503 is filled with filling glue; the upper pad plate is located at the bottom of the damping base 403, and when the cable clamp 401 is stressed due to shaking or other reasons, the force is transmitted to the energy absorption device 500, and then the pad plate and the corrugated pad 501 absorb and buffer the force.

[0042] The flange device 100 anchors the entire hanger to the tunnel top wall through the fixed anchor rod 101, forming a rigid load-bearing foundation. The inverted T-shaped mounting rod serves as the main load-bearing structure, transmitting the top load downward to the clamping assembly to ensure the stability of the overall structure.

[0043] Inside the adjusting groove 201 of the T-shaped mounting rod, the extrusion spring column 202 continuously exerts downward pressure on the connecting rod 203, keeping the connecting rod 203 in a pre-tightened state. When the tunnel top wall experiences longitudinal displacement due to vibrations (such as vehicle passage or geological activity), the extrusion spring column 202 absorbs energy through its own expansion and contraction, reducing the direct transmission of vibrations to the cable and achieving a first-stage longitudinal shock absorption.

[0044] The upper clamping ring of the clamping device 400 is linked with the mounting piece 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 tightening of the mounting bolt 402, and the lower clamping ring is fixed to the top of the energy-absorbing device 500. When the cable is placed in the ring, the extrusion spring column 202 exerts downward pressure through the connecting rod 203, causing the upper clamping ring to automatically conform to the cable, forming an elastic clamping state that prevents both over-tightening damage to the cable and excessive looseness that causes shaking.

[0045] 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 extrusion 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 loosened, the reset spring and the extrusion spring column 202 work together to automatically close the clamping ring, achieving tool-free quick installation and removal and simplifying the installation process.

[0046] The initial height of the upper clamping ring can be adjusted by tightening the mounting bolt 402, and the flexible contact of the bottom rubber pad can adapt to cables of different diameters and adjust the clamping force by controlling the depth of the bolt, preventing the cable from deforming due to long-term stress.

[0047] The shock-absorbing base 403 at the bottom of the clamping device is connected to the energy-absorbing device 500. When the cable shakes laterally or radially due to vibrations, 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 filler in the gap 503 is filled with silicone glue, which absorbs horizontal high-frequency vibrations through viscous deformation. The gasket 502 increases friction to prevent relative sliding between components, ensuring the stability of the energy transmission path and achieving a second-stage composite shock absorption.

[0048] The multi-layer structure of the energy-absorbing device 500 converts vibration energy into the elastic potential energy of the rubber and the viscous internal energy dissipation of the filler, ultimately reducing the vibration amplitude transmitted to the cable and protecting the cable insulation layer and internal structure from damage.

[0049] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be made without departing from the spirit and scope of the present application, which is defined by the following claims and their equivalents.

Claims

1. A cable suspension shock-absorbing bracket in a tunnel, 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 adjustment device (300) and a clamping device (400); the flange device (100) includes a flange plate and a fixing anchor rod (101) arranged on the flange plate, and the suspension device (200) includes a T-shaped mounting rod and a connecting rod (203); An adjustment slot (201) is provided on the upper portion of the T-shaped mounting rod, a connecting rod (203) is inserted into the adjustment slot (201), and mounting members (204) are symmetrically provided at both ends of the connecting rod (203), the main body of the mounting member (204) being L-shaped and a nut being installed at the bottom; an extrusion spring column (202) is provided above the adjustment slot (201), and the bottom end of the extrusion spring column (202) is installed on the connecting rod (203); the clamping device (400) includes symmetrically arranged cable clamps (401), each cable clamp (401) including two upper and lower clamping rings, and an energy absorbing device (500) is installed at the bottom of the lower clamping ring; The adjusting device (300) is arranged at the bottom of the T-shaped mounting rod, and the adjusting device (300) includes a fixing frame (301), an adjusting rod (302) and an adjusting handle (303); the top of the fixing frame (301) is mounted on the T-shaped mounting rod; the adjusting rod (302) is inserted into the middle of the fixing frame (301), and the top of the adjusting rod (302) is connected to the connecting rod (203); A shock-absorbing base (403) is provided at the bottom of the cable clamp (401). The shock-absorbing base (403) is movably arranged in the energy-absorbing device (500) and transmits the force generated by the shaking to the energy-absorbing device (500) for conversion.

2. The tunnel cable suspension shock-absorbing bracket according to claim 1, characterized in that: The flange device (100) is fixed upwardly on the top wall of the tunnel, the T-shaped mounting rod is inverted and fixed to the bottom of the flange, and the connecting rod (203) extends toward both sides.

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

4. The cable suspension shock-absorbing bracket in a tunnel according to claim 3, characterized in that: When the adjusting rod (302) moves upward, it drives the connecting rod (203) upward synchronously, and at the same time 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 the force, the spring column (202) is squeezed 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 installation of the cable.

5. The cable suspension shock-absorbing bracket in a tunnel according to claim 4, characterized in that: An adjusting handle (303) is installed on the fixing frame (301), and the adjusting handle (303) is a pinching handle, and the lower part of the adjusting rod (302) is inserted into the adjusting handle (303). When the adjusting handle (303) is pinched, the adjusting rod (302) is driven upward; a return spring is installed between the top of the adjusting handle (303) and the fixing frame (301). After the adjusting handle (303) loses force, it returns to its initial state under the drive of the return spring, and acts together with the extrusion spring column (202) above to apply a force to the cable clamp (401).

6. The cable suspension shock-absorbing bracket in a tunnel according to claim 3, characterized in that: The energy absorbing device (500) comprises a mounting shell and an energy absorbing mechanism arranged in the mounting shell, wherein the mounting shell is fixed at both ends of a T-shaped mounting rod; the energy absorbing mechanism comprises a plurality of parallel arranged corrugated pads (501) and gaskets (502), wherein the corrugated pads (501) are made of rubber and can absorb and buffer the force when compressed inwardly.

7. The tunnel cable suspension shock-absorbing bracket according to claim 6, characterized in that: Gaskets (502) are provided at the top and bottom of the corrugated pad (501), and a plurality of gaskets (502) are arranged up and down to form a pad. A filling gap (503) is reserved between each layer of gaskets (502), and a filling glue is provided in the filling gap (503); the upper pad is located at the bottom of the shock-absorbing base (403), and the force generated by the shaking of the cable clamp (401) is transmitted to the energy absorbing device (500), and then absorbed and buffered by the pad and the corrugated pad (501).

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