Roadway cable laying device

Abstract

The invention belongs to the technical field of cable installation equipment, and particularly relates to a roadway cable laying device. The device comprises a fixing device and a clamping device. The fixing device is composed of a wall plate and a movable plate, a C-shaped groove is formed in the front side face of the wall plate, and the movable plate is installed in the C-shaped groove. Damping spring sets are arranged at the upper and lower ends of the movable plate. The clamping device is arranged on the front side of the movable plate and comprises an upper clamping wheel and a lower clamping wheel, the rear end of each clamping wheel is connected with a fixed seat, the fixed seat of the upper clamping wheel is fixed on the movable plate, the fixed seat of the lower clamping wheel is movably mounted in the movable plate, a connecting shaft is arranged between the two fixed seats, and a suspension spring is arranged on the connecting shaft. And the wall plates are made of insulating materials, so that the electric shock risk during electric leakage of the cable is avoided fundamentally, and the safety of construction and maintenance personnel is protected. The cable clamp is suitable for cables with different diameters, special clamps do not need to be replaced for cables with different specifications, the equipment cost and the maintenance difficulty are reduced, operation is simplified, and the installation and maintenance efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of cable installation equipment technology, specifically to a cable laying device for tunnels. Background Technology

[0002] In tunnel and shaft operations in municipal engineering, mining, and chemical production, the stable laying of cables is a core element in ensuring efficient power transmission and continuous signal connectivity, directly impacting the smoothness and safety of the overall operation. However, the widely used tunnel cable laying equipment currently available in the industry still has significant shortcomings in adapting to lightweight operation requirements, ensuring operational safety, and reducing maintenance costs. Specific problems are as follows: 1) Insufficient safety protection and potential electric shock hazard: Traditional cable laying methods often use metal brackets directly fixed to the pit wall, and the brackets themselves lack insulation design. When the cable leaks current due to aging, wear, or other reasons, the current can easily be conducted through the metal brackets to the pit wall, creating a live environment inside the pit. This poses a serious risk of electric shock to personnel who subsequently enter the pit for inspection, maintenance, or other operations, and fails to meet the basic safety protection requirements for lightweight devices. 2) Weak anti-interference capability, affecting cable lifespan and transmission stability: During the laying process and long-term use, cables are susceptible to environmental temperature changes (causing thermal expansion and contraction) and external vibrations from pit operations, leading to frequent fluctuations in cable tension. Existing fixing devices are mostly rigid connection structures, which cannot flexibly absorb cable tension changes or effectively buffer external impacts. This results in frequent problems such as cables breaking due to excessive tightness or sagging due to excessive looseness, shortening cable lifespan and severely affecting the stability of power and signal transmission, which contradicts the high efficiency requirements of lightweight devices. 3) Difficulty in locating and inspecting cables, increasing maintenance costs: The interior of the pit is enclosed and dimly lit, and the existing cable laying device lacks a clear cable routing marking design. As a result, when carrying out cable inspection and troubleshooting, it is difficult for staff to quickly locate the target cable. A lot of time needs to be spent sorting out the cable routing, which not only reduces the efficiency of inspection and maintenance, but also increases the manpower and time costs. This does not meet the requirements of low-cost operation and maintenance of lightweight devices.

[0003] For the reasons mentioned above, we proposed a cable laying device for tunnels. Summary of the Invention

[0004] The purpose of this invention is to provide a cable laying device for tunnels to solve the problems mentioned in the background art.

[0005] The technical solution of this invention is: a tunnel cable laying device, including a fixing device and a clamping device. The fixing device consists of a wall panel and a movable plate. The front side of the wall panel has a C-shaped groove, and the movable plate is installed in the C-shaped groove. Shock-absorbing spring assemblies are provided at both the upper and lower ends of the movable plate, and a lithium battery-powered indicator light is provided on the side wall of the wall panel.

[0006] The clamping device is located on the front side of the movable plate. The clamping device includes two clamping wheels, one upper and one lower. Each clamping wheel has a fixed base connected to its rear end. The fixed base of the upper clamping wheel is fixed to the movable plate, while the fixed base of the lower clamping wheel is movably installed inside the movable plate. A connecting shaft connects the two fixed bases, and a suspension spring is mounted on the connecting shaft. The lower fixed base is pulled upwards by the suspension spring, while simultaneously the lower clamping wheel clamps the cable upwards.

[0007] The above plan also includes: The C-shaped groove has an inwardly recessed sliding groove near the movable plate. A sliding rod is arranged longitudinally in the sliding groove. A slider is arranged on the movable plate near the sliding rod, and the slider is movably sleeved on the sliding rod.

[0008] A push-button switch is embedded in the lower part of the sliding groove. The push-button switch controls the circuit connection between the lithium battery and the indicator light. When the movable plate moves downward, the push-button switch is pressed inward, cutting off the electrical connection between the lithium battery and the indicator light. When the movable plate moves upward without pressure, the push-button switch is released, and the lithium battery regains its electrical connection with the indicator light, serving as a warning within the pit.

[0009] The wall panel is a C-shaped panel with an opening facing forward. Fixing bolts are installed at the four corners of the panel, which is then attached to the inner wall of the pit and secured with these bolts. The panel uses insulating material to separate the cable from the wall, preventing leakage from the cable from being transmitted to the wall.

[0010] The other end of the shock-absorbing spring assembly is fixed to the side wall of the C-shaped groove, so that the movable plate is in a suspended state. When the movable plate is subjected to force, the force is transmitted to the shock-absorbing spring assembly for absorption and buffering. Each shock-absorbing spring assembly includes multiple uniformly arranged cylindrical shock-absorbing springs.

[0011] The fixed base is equipped with a support column, the front end of which extends outward, and the clamping wheel is movably sleeved on the support column. The outermost end of the support column is screwed with a limit bolt, and the nut of the limit bolt abuts against one side of the clamping wheel to prevent the clamping wheel from coming off.

[0012] The front side of the movable plate has an inwardly recessed movable groove, and a slide rail is arranged longitudinally in the movable groove. The rear end of the lower fixed seat has a snap-fit ​​edge, which snaps inward onto the slide rail, so that the lower fixed seat can move on the slide rail. This maintains stability during movement and also keeps the lower fixed seat in a suspended state.

[0013] The advantages of this invention are: 1. The wall panel of this invention uses insulating material, directly blocking the conductive connection between the cable and the pit wall, thus avoiding the risk of electric shock when the cable leaks, and protecting the safety of construction and maintenance personnel. 2. An indicator light function is added. When the movable plate is subjected to force and moves downward, the circuit is cut off (indicator light goes out); when the force is lost, the circuit is restored (indicator light comes on). This not only assists in lighting inside the pit, but also clearly marks the cable installation position, facilitating quick positioning later and reducing misoperation during maintenance. 3. A double buffer structure absorbs tension. The movable plate achieves suspended buffering through a shock-absorbing spring group, which can absorb the longitudinal force generated by the cable due to thermal expansion and contraction or vibration. The lower clamping wheel automatically clamps the cable through a suspension spring, which can adapt to cables of different diameters and compensate for lateral tension, preventing the cable from sagging due to being too loose or breaking due to being too tight. The sliding structure ensures buffering stability. The movable plate limits the displacement direction through sliders and rods, and the lower fixed seat fixes the movement trajectory through snap-fit ​​edges and slide rails, ensuring that the device does not shift or shake during the buffering process, further improving the stability of cable installation. 4. The fixing device can be quickly secured to the pit wall using the fixing bolts at the four corners of the wall panel. The cable is directly inserted into the groove of the clamping wheel, eliminating the need for tedious manual adjustments and significantly reducing installation time in narrow pits. The structure is simple and highly adaptable: the device is compact and does not occupy excessive pit space. The design of the suspension spring and clamping wheel grooves can accommodate cables of different diameters, eliminating the need to replace special clamps for different cable specifications, reducing equipment costs and maintenance difficulty, simplifying operation, and improving installation and maintenance efficiency.

[0014] The embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention.

[0016] Figure 2 yes Figure 1 The right view.

[0017] Figure 3 This is a side sectional view of the present invention.

[0018] In the diagram: 1 Fixing device, 1-1 Wall panel, 1-2 Movable plate, 1-3 Fixing bolt, 1-4 Shock-absorbing spring assembly, 1-5 Indicator light, 1-6 Slider, 1-7 Slide rod, 1-8 Press switch.

[0019] 2. Clamping device, 2-1. Fixed base, 2-2. Clamping wheel, 2-3. Limiting bolt, 2-4. Suspension spring, 2-5. Support column, 2-6. Slide rail, 2-7. Snap-fit ​​edge. Detailed Implementation

[0020] See Figure 1-3The tunnel cable laying device includes a fixing device 1 and a clamping device 2. The fixing device 1 includes a wall panel 1-1 and a movable plate 1-2. The wall panel 1-1 is a C-shaped plate with an opening facing forward. Fixing bolts 1-3 are installed at the four corners of the wall panel 1-1. The wall panel 1-1 is attached to the inner wall of the pit and fixed by the fixing bolts 1-3. The wall panel 1-1 uses insulating material to create an insulating barrier between the cable and the wall, preventing leakage current from being transmitted to the vicinity of the wall and causing a hazard.

[0021] The front side of the wall panel 1-1 has a C-shaped groove, and the movable plate 1-2 is installed in the C-shaped groove. Both the upper and lower ends of the movable plate 1-2 are provided with shock-absorbing spring assemblies 1-4. The other end of the shock-absorbing spring assembly 1-4 is fixed to the side wall of the C-shaped groove, so that the movable plate 1-2 is in a suspended state. When the movable plate 1-2 is subjected to force, it can transmit the force to the shock-absorbing spring assembly 1-4 for absorption and buffering. Each shock-absorbing spring assembly 1-4 includes multiple evenly arranged cylindrical shock-absorbing springs.

[0022] A recessed sliding groove is formed in the C-shaped groove near the movable plate 1-2. A slide rod 1-7 is longitudinally arranged within the sliding groove. A slider 1-6 is positioned on the movable plate 1-2 near the slide rod 1-7, and the slider 1-6 is movably fitted onto the slide rod 1-7, making the vertical displacement of the movable plate 1-2 more stable under the constraint of the slide rod 1-7. This allows the movable plate 1-2 to move vertically under the constraint of the slide rod 1-7, and makes it more stable during buffering. An indicator light 1-5 is provided on the side wall of the wall panel 1-1, and a lithium battery is installed inside the wall panel 1-1, electrically connected to the indicator light 1-5.

[0023] A push-button switch 1-8 is embedded in the lower part of the sliding groove. Push-button switch 1-8 controls the circuit connection between the lithium battery and indicator light 1-5. When the movable plate 1-2 moves downwards, it presses push-button switch 1-8 inwards, cutting off the electrical connection between the lithium battery and indicator light 1-5. When the movable plate 1-2 loses pressure and moves upwards, it releases push-button switch 1-8, restoring the electrical connection between the lithium battery and indicator light 1-5, causing indicator light 1-5 to illuminate as a warning. This serves as a warning within the pit and also assists in the routing of auxiliary cables.

[0024] The clamping device 2 is located on the front side of the movable plate 1-2. The clamping device 2 includes two clamping wheels 2-2, one above the other. The cable is laid between the two clamping wheels 2-2. Each clamping wheel 2-2 has a fixed seat 2-1 at its rear end. The upper fixed seat 2-1 is fixed on the movable plate 1-2.

[0025] The cable is laid between two clamping wheels 2-2. The clamping wheels 2-2 have grooves for clamping the cable, and the cable is restricted on both sides within the clamping grooves. A lower fixing seat 2-1 is movably mounted within a movable plate 1-2. The front side of the movable plate 1-2 has an inwardly recessed movable groove, within which a slide rail 2-6 is longitudinally arranged. The rear end of the lower fixing seat 2-1 has a locking edge 2-7, which engages inwardly with the slide rail 2-6. This allows the lower fixing seat 2-1 to move up and down under restricted conditions, maintaining stability during movement and ensuring the lower fixing seat 2-1 is in a suspended state.

[0026] A suspension spring 2-4 connects the two fixed seats 2-1. The lower fixed seat 2-1 is pulled upward by the suspension spring 2-4, thus the lower clamping wheel 2-2 can clamp the cable upward. A support column 2-5 is provided inside the fixed seat 2-1. The front end of the support column 2-5 extends outward, and the clamping wheel 2-2 is movably sleeved on the support column 2-5. A limit bolt 2-3 is screwed to the outermost end of the support column 2-5. The nut of the limit bolt 2-3 abuts against one side of the clamping wheel 2-2 to prevent the clamping wheel 2-2 from disengaging. The support column 2-5 is a T-shaped column, and its longitudinal ends are respectively connected to the two ends of the suspension spring 2-4, so that the suspension spring 2-4 and the fixed seat 2-1 form a whole.

[0027] This solution features a simple structure and compact size, allowing for rapid installation and deployment within the pit wall. The cable is conveniently laid between the two clamping wheels 2-2 without requiring cumbersome operations. Furthermore, the device has an elastic buffer function; its upper and lower buffers, combined with the cable's sliding on the clamping wheels 2-2, compensate for the tension generated during cable stretching, preventing the cable from becoming too loose or too tight.

[0028] The specific principles behind this solution are as follows: The wall panel 1-1 adopts a double-layer composite structure, with the inner layer being glass fiber reinforced plastic and the outer layer covered with a fire-retardant coating. The wall panel 1-1 of the fixing device 1 is a C-type insulating board, which is fixed to the inner wall of the pit by fixing bolts 1-3 at the four corners. The insulating material of the wall panel 1-1 can isolate cable leakage and prevent current from being conducted to the wall and causing danger.

[0029] The clamping device 2 is mounted on the movable plate 1-2. It clamps the cable using two grooved clamping wheels 2-2, which limit the cable's lateral movement. The fixing seat 2-1 of the lower clamping wheel 2-2 is pulled upward by the suspension spring 2-4, automatically clamping the cable using spring tension. This device is suitable for cables of different thicknesses and does not require manual adjustment.

[0030] The movable plate 1-2 is suspended within the C-groove of the wall panel 1-1 via shock-absorbing spring assemblies 1-4 at both its upper and lower ends. When the cable experiences tension or vibration, the movable plate 1-2 transmits the force to the shock-absorbing spring assemblies 1-4, causing the springs to contract and extend to absorb the impact. The movable plate 1-2 is mounted on the sliding rod 1-7 via a slider 1-6, allowing only vertical movement to prevent swaying during cushioning and ensure stability.

[0031] The lithium battery inside panel 1-1 powers indicator light 1-5. The push switch 1-8 at the bottom of the sliding groove controls the circuit's on / off state. When the movable plate 1-2 is subjected to force and moves downward, the push switch 1-8 will cut off the circuit, and indicator light 1-5 will turn off. When the force disappears, the movable plate 1-2 moves upward and releases the switch, and indicator light 1-5 lights up, indicating that the cable status is normal, and also assisting in the identification of wiring within the pit.

[0032] The above description is merely a specific embodiment of the present invention, and the various examples do not constitute a limitation on the substantive content of the present invention.

Claims

1. A cable laying device for tunnels, comprising a fixing device (1) and a clamping device (2), characterized in that: The fixing device (1) consists of a wall panel (1-1) and a movable plate (1-2). The front side of the wall panel (1-1) is provided with a C-shaped groove, and the movable plate (1-2) is installed in the C-shaped groove. Both the upper and lower ends of the movable plate (1-2) are provided with shock-absorbing spring groups (1-4), and the side wall of the wall panel (1-1) is provided with an indicator light (1-5) powered by a lithium battery. The clamping device (2) is set on the front side of the movable plate (1-2). The clamping device (2) includes two clamping wheels (2-2) and a fixed seat (2-1) connected to the rear end of each clamping wheel (2-2). The fixed seat (2-1) of the upper clamping wheel (2-2) is fixed on the movable plate (1-2), and the fixed seat (2-1) of the lower clamping wheel (2-2) is movably installed in the movable plate (1-2). There is a connecting shaft between the two fixed seats (2-1), and a suspension spring (2-4) is on the connecting shaft. The lower fixed seat (2-1) is pulled upward by the suspension spring (2-4), and at the same time, the lower clamping wheel (2-2) clamps the cable upward.

2. The tunnel cable laying device according to claim 1, characterized in that: A recessed sliding groove is provided near the movable plate (1-2) of the C-shaped groove. A slide rod (1-7) is arranged longitudinally in the sliding groove. A slider (1-6) is provided near the slide rod (1-7) of the movable plate (1-2), and the slider (1-6) is movably sleeved on the slide rod (1-7).

3. The tunnel cable laying device according to claim 2, characterized in that: A push switch (1-8) is embedded in the lower part of the sliding groove. The push switch (1-8) controls the circuit connection between the lithium battery and the indicator light (1-5). When the movable plate (1-2) moves down, it presses the push switch (1-8) inward. When the push switch (1-8) moves inward, it cuts off the electrical connection between the lithium battery and the indicator light (1-5). When the movable plate (1-2) loses the force and moves upward, it releases the push switch (1-8), and the lithium battery restores the electrical connection with the indicator light (1-5), which serves as a reminder in the pit.

4. The tunnel cable laying device according to claim 1, characterized in that: The wall panel (1-1) is a C-shaped panel with an opening facing forward. Fixing bolts (1-3) are provided at the four corners of the wall panel (1-1). The wall panel (1-1) is attached to the inner wall of the pit and fixed by fixing bolts (1-3). The wall panel (1-1) is made of insulating material to block the cable from the wall.

5. The tunnel cable laying device according to claim 1, characterized in that: The other end of the shock-absorbing spring assembly (1-4) is fixed to the side wall of the C-shaped groove, so that the movable plate (1-2) is suspended. When the movable plate (1-2) is subjected to force, it transmits the force to the shock-absorbing spring assembly (1-4) for absorption and buffering. Each shock-absorbing spring assembly (1-4) includes multiple uniformly arranged cylindrical shock-absorbing springs.

6. The tunnel cable laying device according to claim 1, characterized in that: A support column (2-5) is provided inside the fixed base (2-1). The front end of the support column (2-5) extends outward, and the clamping wheel (2-2) is movably sleeved on the support column (2-5). The outermost end of the support column (2-5) is screwed with a limit bolt (2-3). The nut of the limit bolt (2-3) abuts against one side of the clamping wheel (2-2) to prevent the clamping wheel (2-2) from coming off. The front side of the movable plate (1-2) has an inwardly recessed movable groove, and a slide rail (2-6) is arranged longitudinally in the movable groove. The rear end of the lower fixed seat (2-1) is provided with a snap-fit ​​edge (2-7), and the snap-fit ​​edge (2-7) snaps inward onto the slide rail (2-6), so that the lower fixed seat (2-1) can move on the slide rail (2-6), maintaining stability during movement while also keeping the lower fixed seat (2-1) in a suspended state.

Images