Cable bridge

Abstract

The utility model discloses a cable bridge in the technical field of cable bridges, which comprises a longitudinally arranged bearing main support, a plurality of horizontal shelves are arranged on the bearing main support at intervals, shelf connecting pieces are arranged between the horizontal shelves and the bearing main support, and the shelf connecting pieces are detachably connected with the bearing main support. The connecting position of the shelf connecting piece and the bearing main support can be adjusted, the horizontal shelf is connected to the shelf connecting piece, and the shelf connecting piece carries the horizontal shelf to be longitudinally adjusted. The distance between the horizontal shelves can be adjusted, and the distance between the cables can be adjusted according to the materials and models of the cables, so that the different distance requirements of different cables are met.

Description

Technical Field

[0001] The utility model relates to the technical field of cable bridges, in particular to a cable bridge. Background Art

[0002] In the development of modern electricity, power cable trays need to be laid when equipment is powered on. Usually there are long-distance overhead cable laying methods and underground power cable laying methods. In urban construction, underground power cable laying methods are often used to ensure the beauty and cleanliness of the city.

[0003] In modern applications, the laying method of underground power cables basically uses cable trench supports, which usually have fixed lengths. The longitudinal spacing between cable racks cannot be adjusted according to the specifications of the cables. If the longitudinal spacing between the racks is too small, the safe spacing of the cables cannot be met; if the longitudinal spacing between the racks is too large, the number of cables placed is small, which cannot meet the cable laying requirements and has poor economy. Utility Model Content

[0004] The utility model aims to provide a cable bridge, wherein the connection position between the horizontal shelf and the load-bearing main support is adjustable, so that different horizontal shelf spacings can be selected according to the size of the cable.

[0005] During the cable laying process, a certain distance must be maintained between cables to avoid electrical interference and mutual influence between cables, ensure the stability and safety of power transmission, and dissipate heat, improve the load capacity and service life of cables, and facilitate maintenance and repair. Generally speaking, the spacing between low-voltage cables is 1.5 to 2 times the cable diameter, and the spacing between high-voltage cables is 2 to 3 times the cable diameter. Cables of different types and sizes have different spacing requirements. If a non-adjustable cable tray is used, it cannot be ensured that the cables laid each time can reach a longitudinal distance that meets safety standards, and it is difficult to meet the laying requirements of multiple different cables at the same time.

[0006] The purpose of the utility model is mainly achieved through the following technical solutions:

[0007] A cable tray comprises a longitudinally arranged load-bearing main support, a plurality of horizontal shelves are arranged on the load-bearing main support at intervals, a shelf connector is provided between the horizontal shelves and the load-bearing main support, the shelf connector and the load-bearing main support are detachably connected, the connection position of the shelf connector and the load-bearing main support is adjustable, the horizontal shelves are connected to the shelf connector, and the shelf connector carries the horizontal shelves for longitudinal adjustment.

[0008] The cable bridge comprises a load-bearing main support of a longitudinal structure and a horizontal layer frame of a transverse structure. The horizontal layer frame is connected to the load-bearing main support through a layer frame connector, and the cable is placed on the horizontal layer frame.

[0009] By making the connection position between the horizontal shelf and the load-bearing main support adjustable, the horizontal shelf can connect the shelf connector at a position that meets the cable spacing according to the specific cables to be laid. The cable tray can adapt to the laying of various cables, thereby improving the safety of the cables and extending their service life. This makes the cable tray of the utility model more competitive in the market and more economically valuable.

[0010] The layer frame connector and the load-bearing main support are detachably connected. Compared with welding and other connection methods, the utility model has trial and error conditions, and the wrong connection position selection can be corrected, thereby ensuring that the spacing between cables meets the specifications. In certain cases, the bridge can also be used twice.

[0011] Furthermore, the load-bearing main support includes a plurality of longitudinal supports, and two adjacent longitudinal supports are detachably connected, and the bottom of the upper longitudinal support is connected to the top of the lower longitudinal support.

[0012] The number of cables in cable laying is affected by factors such as the purpose, type, length, diameter and laying method of the cables. In order to make the bridge described in the utility model adapt to the laying of various types of cables, the load-bearing main support includes several longitudinal supports, and through the splicing of the longitudinal supports, sufficient installation positions are provided for the horizontal bridge.

[0013] Furthermore, the longitudinal support is provided with a plurality of screw holes, the plurality of screw holes are evenly spaced apart, and the shelf connector is threadedly connected to the load-bearing main support through the screw holes.

[0014] By setting a number of evenly spaced screw holes on the longitudinal bracket, the shelf connector can select specific installation screw holes according to the size of the cable itself and the cable spacing requirements, which is simple and convenient to operate. The cable spacing specification is a small range and does not need to be precisely controlled. Therefore, the adjustment method of the utility model can ensure the stability and durability of the structure while achieving the appropriate cable spacing.

[0015] Furthermore, there are two load-bearing main supports which are parallel to each other, the horizontal shelves are horizontally distributed, and both ends of the horizontal shelves are connected to the load-bearing main supports through the shelf connectors;

[0016] A plurality of rollers are sleeved on one of the horizontal shelves, and the rollers are rotatably connected to the horizontal shelf, and a gap is left between two adjacent rollers.

[0017] During the cable laying process, manpower is often required to fix the position. During the dragging process, the cable skin and the horizontal layer frame will be constantly worn, which is easy to damage the insulation protection layer of the cable. Therefore, rollers are set on the outside of the horizontal layer frame. Through the rotation of the rollers, it is convenient to quickly drag and install the cable, reducing the damage of the cable skin.

[0018] Furthermore, the shelf connector is provided with an inwardly concave connection hole, the connection hole is provided with an internal thread, and both ends of the horizontal shelf are provided with threaded sleeves adapted to the internal thread;

[0019] The shelf connector is connected to the horizontal shelf through threaded connection, which is detachable. If some parts are damaged, it is easy to replace and maintain. And the threaded connection has a stable structure and is not prone to sliding, shifting and other problems.

[0020] The threaded sleeve is sleeved on the horizontal shelf, a through hole is provided on a side of the threaded sleeve away from the connecting hole, and a buckle which can be inserted into or released from the through hole is provided on the horizontal shelf.

[0021] When the connection between the shelf connector and the horizontal shelf needs to be disassembled for maintenance and replacement of some parts after use, the movable range of the horizontal shelf is very limited, and it is almost impossible to move, making it difficult to disassemble and assemble because the position of the load-bearing main bracket is fixed. The utility model sets the connecting hole as an inward concave type, so that the length of the horizontal shelf is the same as the spacing between the two relative load-bearing main brackets, and the threaded sleeve on the horizontal shelf moves and rotates along the length direction of the horizontal shelf to connect with the connecting hole.

[0022] To ensure the stability between the threaded sleeve and the horizontal shelf, the length of the threaded sleeve is greater than the concave length of the connecting hole. When the threaded sleeve and the connecting hole are fully tightened, the position of the threaded sleeve is stable. The portion of the threaded sleeve extending out of the connecting hole can be used to support and limit the horizontal shelf. Because the positions of the threaded sleeves at both ends of the horizontal shelf are fixed, the position of the horizontal shelf is also relatively stable, and the horizontal shelf will not fall out of the shelf connector due to external force.

[0023] The above scheme limits the movement of the horizontal shelf in the longitudinal plane. After the connection hole and the threaded sleeve are tightened, in order to prevent the horizontal shelf from moving along the length direction of the threaded sleeve, a buckle is provided on the horizontal shelf, and a through hole is provided at a corresponding position of the threaded sleeve. When the buckle is buckled into the through hole, the through hole is located outside the connection hole. Then, the buckle can be pressed later, and the threaded sleeve can be rotated toward the direction close to the horizontal shelf to loosen the connection and perform maintenance and replacement of the bridge frame components.

[0024] Furthermore, the inner wall of the roller is a metal through hole, both ends of the metal through hole protrude from both ends of the roller, and a temperature sensing element is provided on the inner wall of the metal through hole.

[0025] Metal through holes are provided on the inner wall of the roller, both ends of which protrude from the roller, so that a certain distance is maintained between the rollers to avoid overlapping or squeezing of the cables and to prevent squeezing between the cables and overheating of the cables.

[0026] The roller is made of insulating porcelain material, which has high hardness, low friction coefficient, good thermal conductivity, and insulation characteristics. A temperature sensing element is set on the side wall of the metal through hole, and the heat of the cable can be transferred to the temperature sensing element through the roller, which is convenient for monitoring the temperature of the cable, ensuring safe operation, preventing failures caused by overheating, and improving system reliability.

[0027] Furthermore, the temperature sensing element includes a chip and a temperature sensing ring, the temperature sensing ring is embedded in the inner wall of the metal through hole, and the chip is in contact with the temperature sensing ring.

[0028] Specifically, a temperature sensing ring is used to detect the temperature in real time. When the cable is overloaded or a short circuit occurs, a large amount of heat will be generated. At this time, the temperature sensing ring installed on the inner wall of the metal through hole will collect the high temperature signal and transmit the high temperature signal. The chip is in contact with the temperature sensing ring and transmits the temperature information detected by the temperature sensing ring to the information collection area through wireless transmission.

[0029] Furthermore, a battery compartment is provided on the outer side surface of the metal through hole, and the battery compartment is located outside the roller.

[0030] A battery compartment is provided on the metal through hole for storing batteries and providing power to the chip, so that the chip can collect temperature information on the temperature sensing ring for a long time.

[0031] The battery compartment is arranged on the outer side of the metal through hole protruding from the roller part, so that the staff can replace the battery at a later time.

[0032] Furthermore, the side of the load-bearing main support away from the horizontal shelf is the back side of the main support, a smoke sensor is arranged on the top of the back side of the main support, a liquid sensor is arranged on the bottom of the back side of the main support, and an information collection area is arranged between the smoke sensor and the liquid sensor.

[0033] A smoke sensor is installed on the top of the main load-bearing bracket. When a cable fails or a cable trench catches fire, smoke rises upward. The smoke sensor detects the smoke and immediately sends a signal to the information collection area.

[0034] When water accumulates in the underground cable trench, the liquid sensor installed above the base of the load-bearing main support is turned on and sends an alarm message to the signal collection area.

[0035] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The connection position between the shelf connector and the load-bearing main bracket is adjustable, so the spacing between the horizontal shelves is adjustable, and the spacing between the cables can be adjusted according to the material and model of the cables to meet the cable spacing requirements;

[0037] 2. The longitudinal bracket is detachably connected, and the shelf connector is threadedly connected to the load-bearing main bracket, which is convenient for adjustment and disassembly;

[0038] 3. Sensors are installed inside the roller and on the main load-bearing bracket to monitor the cable environment, collect information on the humidity, temperature, smoke sensing and cable heating in the cable well, and establish full life cycle management of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0040] Figure 1 This is a schematic diagram of the overall structure of this application;

[0041] Figure 2 This is a schematic diagram of the structure of the roller of this application;

[0042] Figure 3 This is a schematic diagram of the structure of the shelf connector, horizontal shelf, and threaded sleeve of this application;

[0043] Figure 4 A schematic diagram of a liquid sensor for this application;

[0044] The names corresponding to the accompanying drawings are: 1. load-bearing main bracket; 2. shelf connector; 3. connecting hole; 4. horizontal shelf; 5. threaded sleeve; 6. roller; 7. smoke sensor; 8. information collection area; 9. liquid sensor; 10. screw hole; 11. metal through hole; 12. battery compartment; 13. chip; 14. temperature sensing ring. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with embodiments and drawings. The schematic implementation manner of the utility model and its description are only used to explain the utility model and are not intended to limit the utility model.

[0046] Example:

[0047] like Figure 1-Figure 4As shown, this embodiment relates to a cable tray in the field of cable tray technology, comprising a longitudinally arranged load-bearing main support 1, a plurality of horizontal shelves 4 are arranged at intervals on the load-bearing main support 1, a shelf connector 2 is provided between the horizontal shelf 4 and the load-bearing main support 1, the shelf connector 2 and the load-bearing main support 1 are detachably connected, the connection position of the shelf connector 2 and the load-bearing main support 1 is adjustable, the horizontal shelf 4 is connected to the shelf connector 2, and the shelf connector 2 carries the horizontal shelf 4 for longitudinal adjustment.

[0048] The cable bridge comprises a load-bearing main support 1 of a longitudinal structure and a horizontal shelf 4 of a transverse structure. The horizontal shelf 4 is connected to the load-bearing main support 1 via a shelf connector 2, and the cables are placed on the horizontal shelf 4.

[0049] The connection position between the horizontal shelf 4 and the load-bearing main support 1 is adjustable, so that the horizontal shelf 4 can connect the shelf connector 2 to a position that meets the cable spacing according to the specific cables to be laid. The cable tray can adapt to the laying of various cables, making the cables safer and having a longer service life; making the cable tray of the utility model more competitive in the market and having higher economic value.

[0050] The layer frame connector 2 and the load-bearing main support 1 are detachably connected. Compared with welding and other connection methods, the utility model has trial and error conditions, and the wrong connection position selection can be corrected, thereby ensuring that the spacing between cables meets the specifications. In certain cases, the bridge can also be used twice.

[0051] Furthermore, the load-bearing main support 1 includes a plurality of longitudinal supports, and two adjacent longitudinal supports are detachably connected, and the bottom of the upper longitudinal support is connected to the top of the lower longitudinal support.

[0052] The number of cables in cable laying is affected by factors such as the purpose, type, length, diameter and laying method of the cables. In order to make the bridge frame described in the utility model adapt to the laying of various numbers of cables, the load-bearing main support 1 includes a plurality of longitudinal supports, and through the splicing of the longitudinal supports, sufficient installation positions are provided for the horizontal bridge frame.

[0053] As a feasible implementation of the above scheme, the main load-bearing support 1 is assembled from a number of longitudinal supports, which can be specifically connected by threaded connection, clamping connection and other connection methods.

[0054] Furthermore, the longitudinal support is provided with a plurality of screw holes 10 , and the plurality of screw holes 10 are evenly spaced apart, and the shelf connector 2 is threadedly connected to the load-bearing main support 1 through the screw holes 10 .

[0055] By setting a plurality of screw holes 10 with uniform spacing on the longitudinal bracket, the shelf connector 2 can select specific installation screw holes 10 according to the size of the cable itself and the cable spacing requirements, which is simple and convenient to operate. In addition, the cable spacing specification is a small range and does not need to be precisely controlled. Therefore, the adjustment method of the utility model can ensure the stability and durability of the structure while achieving the appropriate cable spacing.

[0056] Furthermore, the load-bearing main supports 1 are two and parallel to each other, the horizontal shelves 4 are horizontally distributed, and both ends of the horizontal shelves 4 are connected to the load-bearing main supports 1 through the shelf connectors 2;

[0057] A plurality of rollers 6 are mounted on one of the horizontal shelves 4 . The rollers 6 are rotatably connected to the horizontal shelves 4 , and a gap is left between two adjacent rollers 6 .

[0058] During the cable laying process, manpower is often required to fix the position, and the cable skin and the horizontal layer frame 4 will be constantly worn during the dragging process, which is easy to damage the insulation protection layer of the cable. Therefore, a roller 6 is set outside the horizontal layer frame 4 to facilitate the rapid dragging and installation of the cable and reduce the loss of skin damage.

[0059] In the specific implementation of the above scheme, the size of the roller 6 is determined by the size of the carrying cable, and the lateral width of the roller 6 is greater than the diameter of the cable; the number of rollers 6 can be appropriately reduced for cables with thicker diameters, and the number of rollers 6 can be increased for control cables or other relatively thin cables. A horizontal spacing is left between the cables to maintain the gap to prevent the cables from being squeezed and overheated.

[0060] Furthermore, the shelf connector 2 is provided with an inwardly concave connection hole 3, the connection hole 3 is provided with an internal thread, and both ends of the horizontal shelf 4 are provided with a threaded sleeve 5 adapted to the internal thread;

[0061] The shelf connector 2 is connected to the horizontal shelf 4 by threaded connection, and is detachable. If some parts are damaged, it is easy to replace and maintain. In addition, the threaded connection is used, and the structure is stable and is not prone to sliding, displacement and other problems.

[0062] Furthermore, the threaded sleeve 5 is sleeved on the horizontal shelf 4, a through hole is provided on a side of the threaded sleeve 5 away from the connecting hole 3, and a buckle that can be inserted into or released from the through hole is provided on the horizontal shelf 4.

[0063] When the connection between the shelf connector 2 and the horizontal shelf 4 needs to be disassembled for maintenance and replacement of some parts after use, the horizontal shelf 4 has a very limited range of motion and can hardly be moved due to the fixed position of the load-bearing main bracket 1, making it difficult to dismantle. The utility model sets the connection hole 3 as an inward concave type, so that the length of the horizontal shelf 4 is the same as the spacing between the two load-bearing main brackets 1, and the threaded sleeve 5 sleeved on the horizontal shelf 4 moves and rotates along the length direction of the horizontal shelf 4, thereby connecting with the connection hole 3.

[0064] In order to ensure the stability between the threaded sleeve 5 and the horizontal shelf 4, the length of the threaded sleeve 5 is made greater than the concave length of the connecting hole 3. When the threaded sleeve 5 and the connecting hole 3 are fully tightened, the position of the threaded sleeve 5 is stable. The portion of the threaded sleeve 5 extending out of the connecting hole 3 can be used to support and limit the horizontal shelf 4. Because the positions of the threaded sleeves 5 at both ends of the horizontal shelf 4 are fixed, the position of the horizontal shelf 4 is also relatively stable, and the horizontal shelf 4 will not fall out of the shelf connector 2 due to external force.

[0065] The above solution limits the movement of the horizontal shelf 4 in the longitudinal plane. To prevent the horizontal shelf 4 from moving along the length direction of the threaded sleeve 5, a buckle is provided on the horizontal shelf 4, and a through hole is provided at a corresponding position of the threaded sleeve 5. When the buckle is buckled into the through hole, the through hole is located outside the connecting hole 3. Then, the buckle can be pressed later, and the threaded sleeve 5 can be rotated toward the direction close to the horizontal shelf 4 to loosen the connection and perform maintenance and replacement of the bridge frame components.

[0066] The structure of the above solution is relatively stable. Unless subjected to a specific external force, the horizontal shelf is not easy to separate from the shelf connector.

[0067] As an alternative to the above solution, the horizontal shelf 4 and the threaded sleeve 5 are an integrated structure, the middle part of the horizontal shelf 4 is a telescopic section, both ends of the telescopic section are provided with external thread sections, the external thread sections are rotatably connected to the telescopic section, and the length of the horizontal shelf 4 can be adjusted during the disassembly process, which is convenient for disassembly and assembly while ensuring the stability of the structure. The roller is fixedly connected to the telescopic section of the horizontal shelf, and when the external thread section is tightened with the connecting hole, when the cable on the roller moves, the cable will apply force to the roller, so that the roller rotates with the telescopic section.

[0068] As an alternative to the above scheme, the shelf connector 2 is provided with an arc-shaped groove opening upward, and there is no obstruction above the arc-shaped groove. The horizontal shelf 4 is a cylindrical steel structure, and the horizontal shelf 4 can be placed directly in the groove from top to bottom.

[0069] Furthermore, the inner wall of the roller 6 is a metal through hole 11 , both ends of the metal through hole 11 protrude from both ends of the roller 6 , and a temperature sensing element is disposed on the inner wall of the metal through hole 11 .

[0070] A metal through hole 11 with both ends protruding from the roller 6 is arranged on the inner wall of the roller 6, so that a certain distance is maintained between the rollers 6 to avoid squeezing between adjacent cables on the left and right, so that the cables can maintain a good heat dissipation and ventilation distance.

[0071] When the above scheme is implemented, the stability of the spacing between the rollers 6 can be controlled by nuts, washers and other annular parts, and the size of the spacing between the rollers 6 can be controlled by controlling the number of nuts, washers and other annular parts;

[0072] As an alternative to the above specific embodiment, the spacing between the rollers 6 is adjusted by the extension length of the metal through-hole 11, so that the end of the metal through-hole 11 can be extended and retracted.

[0073] The roller 6 is made of insulating porcelain material, which has high hardness, low friction coefficient, good thermal conductivity, and insulation characteristics. A temperature sensing element is arranged on the side wall of the metal through hole 11, and the heat of the cable can be transferred to the temperature sensing element through the roller 6, which is convenient for monitoring the temperature of the cable, ensuring safe operation, preventing failures caused by overheating, and improving system reliability.

[0074] Furthermore, the temperature sensing element includes a chip 13 and a temperature sensing ring 14 . The temperature sensing ring 14 is embedded in the inner wall of the metal through hole 11 , and the chip 13 is in contact with the temperature sensing ring 14 .

[0075] Specifically, a temperature sensing ring 14 is used to detect the temperature in real time. When the cable is overloaded or a short circuit occurs, a large amount of heat will be generated. At this time, the temperature sensing ring 14 installed in the metal through hole 11 will collect the high temperature signal and transmit it to the back end. The chip 13 is in contact with the temperature sensing ring 14, and the temperature information detected by the temperature sensing ring 14 is transmitted to the information collection area through wireless transmission.

[0076] As an implementation method of the temperature-sensitive ring 14, the temperature-sensitive ring 14 is made of a metal material, and the temperature-sensitive ring 14 is a ring structure with an opening. When the metal is heated, the microscopic atoms in the metal move, and the electrons in the atoms move from the high-temperature end to the low-temperature end, so more electrons gather at the low-temperature end, forming an electric potential difference between the hot end and the cold end of the same metal. The temperature-sensitive ring 14 includes a ring body A and a ring body B arranged in parallel. The material of the ring body A is different from that of the ring body B. Under the same heating conditions, the number of electrons at the same position of the ring body A and the ring body B will be different. At this time, the voltage difference at the same position can be converted into a temperature value.

[0077] Furthermore, a battery compartment 12 is provided on the outer side of the metal through hole 11 , and the battery compartment 12 is located outside the roller 6 .

[0078] A battery compartment 12 is provided on the metal through hole 11 for storing batteries and providing power to the chip 13 , so that the chip 13 can collect temperature information on the temperature sensing ring 14 for a long time.

[0079] The battery compartment 12 is arranged on the outer surface of the metal through hole 11 protruding from the roller 6, so that the staff can replace the battery at a later time.

[0080] In the specific use of the above scheme, each metal through hole 11 is provided with a chip 13 for receiving and sending signals and storing IP addresses and a battery compartment 12, and the battery in the battery compartment 12 provides power to the chip 13. Due to the low power, a button battery can be used.

[0081] Furthermore, the side of the load-bearing main support 1 away from the horizontal shelf 4 is the back side of the main support, a smoke sensor 7 is arranged on the top of the back side of the main support, a liquid sensor 9 is arranged on the bottom of the back side of the main support, and an information collection area 8 is arranged between the smoke sensor 7 and the liquid sensor 9.

[0082] A smoke sensor 7 is installed on the top of the main load-bearing bracket 1. When a cable fails or a cable trench catches fire, smoke rises upward. The smoke sensor 7 detects the smoke information and immediately sends a signal to the information collection area.

[0083] When water accumulates in the underground cable trench, the liquid sensor 9 installed above the base of the load-bearing main support 1 is turned on and sends an alarm message to the signal collection area.

[0084] like Figure 4 As shown, as an implementation of the above-mentioned liquid sensor 9, a DC source power supply is used, which is composed of a DC battery pack and two metal induction probes. The metal induction probes are constrained by a fixed connecting piece so that the two metal induction probes are in a horizontal position. When the water inside the cable trench reaches the load-bearing base at the lower end of the load-bearing main bracket 1, the two metal induction probes are short-circuited by the medium water, forming a loop conduction, so that the chip 13 in the circuit obtains electrical energy to send an alarm signal, and the information collection area corresponding to each sensor can be set with a unique associated address code, so the location of the water accumulation in the cable trench can be accurately determined.

[0085] As a specific implementation of the above solution, the smoke sensor 7 adopts an independent photoelectric smoke detector, which has a photoelectric sensor inside, and light will pass through the photoelectric sensor in parallel. Under normal circumstances, the light is parallel to the photoelectric sensor, and the internal photoelectric sensor cannot be exposed to the light. When there is smoke and dust in the air, the smoke and dust will refract part of the parallel light to reach the photoelectric sensor, realizing the alarm mechanism.

[0086] When the above scheme is used:

[0087] When a cable burns or a fire occurs in the cable trench, the smoke floats upward, and the smoke sensor 7 installed on the upper end of the load-bearing main bracket 1 can quickly capture the signal and transmit it to the background through the information collection area 8;

[0088] When water accumulates in the cable trench, the liquid sensor 9 installed at the lower end of the load-bearing main bracket 1 can quickly capture the signal and transmit it to the background through the information collection area 8.

[0089] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A cable bridge, comprising a longitudinally arranged load-bearing main support (1), wherein a plurality of horizontal shelves (4) are arranged at intervals on the load-bearing main support (1), characterized in that: A shelf connector (2) is provided between the horizontal shelf (4) and the load-bearing main support (1); the shelf connector (2) and the load-bearing main support (1) are detachably connected; the connection position between the shelf connector (2) and the load-bearing main support (1) is adjustable; the horizontal shelf (4) is connected to the shelf connector (2); and the shelf connector (2) carries the horizontal shelf (4) for longitudinal adjustment.

2. A cable tray as claimed in claim 1, characterized in that: The load-bearing main support (1) comprises a plurality of longitudinal supports, two adjacent longitudinal supports are detachably connected, and the bottom of the longitudinal support located above is connected to the top of the longitudinal support located below.

3. A cable tray as claimed in claim 2, characterized in that: The longitudinal support is provided with a plurality of screw holes (10), the plurality of screw holes (10) are evenly spaced, and the shelf connector (2) is threadedly connected to the load-bearing main support (1) through the screw holes (10).

4. A cable tray as claimed in claim 1, characterized in that: There are two load-bearing main supports (1) which are parallel to each other, the horizontal shelves (4) are horizontally distributed, and both ends of the horizontal shelves (4) are connected to the load-bearing main supports (1) via the shelf connectors (2); A plurality of rollers (6) are sleeved on one of the horizontal shelves (4), and the rollers (6) are rotatably connected to the horizontal shelves (4), with a gap being left between two adjacent rollers (6).

5. A cable tray as claimed in claim 4, characterized in that: The shelf connecting piece (2) is provided with an inwardly concave connecting hole (3), the connecting hole (3) is provided with an internal thread, and both ends of the horizontal shelf (4) are provided with a threaded sleeve (5) adapted to the internal thread; The threaded sleeve (5) is sleeved on the horizontal shelf (4); a through hole is provided on a side of the threaded sleeve (5) away from the connecting hole (3); and a buckle capable of being inserted into or released from the through hole is provided on the horizontal shelf (4).

6. A cable tray as claimed in claim 4, characterized in that: The inner wall of the roller (6) is a metal through hole (11), both ends of the metal through hole (11) protrude from both ends of the roller (6), and a temperature sensing element is provided on the inner wall of the metal through hole (11).

7. A cable tray as claimed in claim 6, characterized in that: The temperature sensing element comprises a chip (13) and a temperature sensing ring (14); the temperature sensing ring (14) is embedded in the inner wall of the metal through hole (11); and the chip (13) is in contact with the temperature sensing ring (14).

8. A cable tray as claimed in claim 7, characterized in that: An electromagnetic chamber (12) is also provided on the outer side surface of the metal through hole (11), and the electromagnetic chamber (12) is located outside the roller (6).

9. A cable tray as claimed in claim 1, characterized in that: The side of the load-bearing main support (1) away from the horizontal shelf (4) is the back side of the main support, a smoke sensor (7) is arranged at the top of the back side of the main support, a liquid sensor (9) is arranged at the bottom of the back side of the main support, and an information collection area (8) is arranged between the smoke sensor (7) and the liquid sensor (9).

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