Transformer cable bridge with locking mechanism

Abstract

The invention relates to the technical field of cable bridges, and discloses a transformer cable bridge with a locking mechanism, the transformer cable bridge comprises a bridge main body, two sides of the bridge main body are provided with ventilation ports, two sides of the bridge main body are provided with clamping grooves below the ventilation ports, the bottom of the bridge main body is provided with a clamping track, and the clamping track is provided with a locking mechanism. According to the transformer cable bridge with the locking mechanism, all the bridge bodies are locked and fixed through the locking assemblies, meanwhile, shielding protection is formed on the tops of the bridge bodies, through the arrangement of exhaust pipes, the bridge bodies can be effectively protected, and the cable bridge is convenient to use and high in practicability. The external circulation speed of hot air in the bridge main body is accelerated, the heat dissipation efficiency is improved, the wire changing opening can be opened by pushing the exhaust pipe, it can be ensured that cable wiring or maintenance can be directly carried out under the condition that the bridge is not disassembled, and the convenience of wiring maintenance is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cable trays, and specifically to a transformer cable tray with a locking mechanism. Background Art

[0002] Cable trays are divided into trough type, tray type, ladder type, grid type and other structures, and are composed of brackets, cross arms and installation accessories, etc. The trough type cable tray is a fully enclosed cable tray, which is most suitable for laying computer cables, communication cables, thermocouple cables and other control cables of highly sensitive systems. It has good effects on shielding interference of control cables and protecting cables in highly corrosive environments. The advantages and disadvantages of ladder type, tray type and trough type cable trays are as follows: The ladder type wireway has good ventilation performance, but does not prevent dust and interference. The trough type and tray type wireways have dust prevention and interference prevention properties.

[0003] For the laying of transformer cables, the trough type cable tray is commonly used to complete the task. The trough type cable tray is generally equipped with a cover plate, which makes the whole trough type cable tray in a closed form, further improving the protection of the cables. However, after the installation and wiring of this fully enclosed trough type cable tray with a cover plate are completed, when new cable lines need to be added, the whole trough type cable tray needs to be disassembled one by one to complete the wiring installation of the new cables, and this process is too cumbersome. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a transformer cable tray with a locking mechanism, which solves the problems raised in the above background art.

[0005] The present invention provides the following technical solutions: A transformer cable tray with a locking mechanism, including a bridge body. Ventilation openings are provided on both sides of the bridge body. Clamping grooves are provided below the ventilation openings on both sides of the bridge body. A clamping track is provided at the bottom of the bridge body. A limiting plate is fixed at the bottom of the inner cavity of the bridge body, and both ends of the limiting plate pass through the clamping grooves. A locking assembly is provided outside the bridge body, and the locking assembly is used for connecting and locking between each bridge body. A diversion assembly is provided inside the locking assembly, and the diversion assembly is used for guiding the gas inside the bridge body.

[0006] Optionally, the locking assembly includes a locking frame. Limiting grooves are provided at both ends of both sides of the locking frame. Double-headed bolts are threadedly fixed at both ends of both sides of the locking frame. The limiting plate is slidably connected with the limiting grooves, and the bridge body and the locking frame are fixedly connected by double-headed bolts. A wire-changing opening is provided in the middle of the top of the locking frame.

[0007] Optionally, the diversion component includes a bracket fixed to the top of one side of the locking frame. A plurality of limiting frames are fixed to the side of the bracket close to the wire changing port. An exhaust pipe is slidably connected to the outside of the limiting frame. Springs are fixed to both sides of the limiting frame on the surface of the bracket, and one end of each spring is fixed to the exhaust pipe.

[0008] Optionally, the exhaust pipe is located above the wire changing port and abuts against the locking frame.

[0009] Optionally, a filter screen is fixed inside the top end of the exhaust pipe.

[0010] Optionally, ventilation cavities are formed inside both sides of the locking frame and are in communication with the limiting grooves. Both ends of the limiting plate are located at the bottom of the ventilation cavity and abut against the inner walls of the ventilation cavity.

[0011] Optionally, air inlets are formed on the surfaces of both sides of the locking frame and are in communication with the ventilation cavities, and the ventilation cavities are in communication with the ventilation ports.

[0012] Optionally, shape memory wires are slidably clamped to both sides of the bottom of the locking frame. The shape memory wires are slidably connected to the clamping tracks, and the tops of the shape memory wires abut against the tops of the clamping tracks.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. For the transformer cable bridge with a locking mechanism, the locking component is used to lock and fix between the bridge body main parts, and at the same time form a shielding protection for the top of the bridge body main part. Through the arrangement of the exhaust pipe, the speed of hot air flowing out of the bridge body main part is accelerated, and the heat dissipation efficiency is improved. Pushing the exhaust pipe can open the wire changing port, ensuring that cable wiring or maintenance can be directly carried out without disassembling the present invention, improving the convenience of maintenance and wiring.

[0014] 2. For the transformer cable bridge with a locking mechanism, the heat generated by the cable operation in the bridge body main part is transferred to the inner wall of the ventilation cavity through the limiting plate. When the external moisture enters the ventilation cavity, the heat absorbed in the ventilation cavity can be used to heat the moisture, reducing the temperature difference between the moisture and the hot air in the bridge body main part, and then reducing the condensation caused by the temperature difference after the moisture enters the bridge body main part, thereby improving the safety of the cable operation environment in the bridge body main part. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a bottom view of the structure of the bridge body main part of the present invention; Figure 3 is a cross-sectional view of the structure of the present invention; Figure 4Structural sectional view of the locking frame of the present invention; Figure 5 Open state diagram of the exhaust pipe of the present invention; Figure 6 Restoration state diagram of the shape memory wire of the present invention In the figure: 1, bridge main body; 11, ventilation opening; 12, clamping groove; 13, clamping track; 2, limit plate; 3, locking frame; 31, limit groove; 32, double-headed bolt; 33, wire changing port; 4, bracket; 41, limit frame; 42, exhaust pipe; 43, spring; 44, filter screen; 5, ventilation cavity; 51, air inlet; 6, shape memory wire. Specific implementation manner

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] Embodiment 1: Please refer to Figure 1-6 , a transformer cable bridge with a locking mechanism, including a bridge main body 1. Ventilation openings 11 are provided on both sides of the bridge main body 1. Clamping grooves 12 are provided below the ventilation openings 11 on both sides of the bridge main body 1. A clamping track 13 is provided at the bottom of the bridge main body 1. A limit plate 2 is fixed at the bottom of the inner cavity of the bridge main body 1, and both ends of the limit plate 2 pass through the clamping grooves 12. A locking assembly is provided outside the bridge main body 1. The locking assembly is used for connecting and locking between the bridge main bodies 1. A flow guiding assembly is provided in the locking assembly. The flow guiding assembly is used for guiding the gas inside the bridge main body 1; The locking assembly includes a locking frame 3. Limit grooves 31 are provided at both ends of both sides of the locking frame 3. Double-headed bolts 32 are threadedly fixed at both ends of both sides of the locking frame 3. The limit plate 2 is slidably connected with the limit grooves 31, and the bridge main body 1 and the locking frame 3 are fixedly connected by the double-headed bolts 32. A wire changing port 33 is provided in the middle of the top of the locking frame 3; The flow guiding assembly includes a bracket 4. The bracket 4 is fixed at the top of one side of the locking frame 3. A plurality of limit frames 41 are fixed on the side of the bracket 4 close to the wire changing port 33. An exhaust pipe 42 is slidably connected to the outside of the limit frames 41. Springs 43 are fixed on the surface of the bracket 4 on both sides of the limit frames 41. One end of the spring 43 is fixed to the exhaust pipe 42. The exhaust pipe 42 is located above the wire changing port 33 and abuts against the locking frame 3. A filter screen 44 is fixed inside the top end of the exhaust pipe 42; During the specific operation process, first align the limit plate 2 in the first bridge body 1 with the limit groove 31, then snap the first bridge body 1 into the inside of the locking frame 3. Next, after aligning the limit plate 2 in the second bridge body 1 with the limit groove 31, snap the second bridge body 1 into the inside of the locking frame 3, so that the two bridge bodies 1 are correspondingly snapped into the inside of the same locking frame 3; Due to the sliding limit of the limit plate 2 by the limit groove 31, after the two bridge bodies 1 are snapped into the locking frame 3, there is no need to calibrate the bolt holes. Just let the two bolts of the double-headed bolt 32 pass through the bolt holes at both ends of the two sides of the locking frame 3 and the bridge body 1 respectively, and then the two bridge bodies 1 and the locking frame 3 can be fixedly locked through the double-headed bolt 32, thus completing the preliminary assembly of the present invention. Subsequently, the remaining bridge bodies 1 and locking frames 3 are gradually assembled according to the above steps and fixed by the double-headed bolt 32; When all the bridge bodies 1 and the locking frames 3 are fixed by the double-headed bolt 32, the present invention can be installed on the hanging bracket. The above is the installation process of the cable tray in the prior art, and the present invention will not be described in detail; Furthermore, when the present invention needs to route new transformer cables, first place the cable on the top of the locking frame 3, on the side away from the bracket 4. Subsequently, push the exhaust pipe 42 towards the direction of the bracket 4, so that the exhaust pipe 42 moves along the length direction of the limit frame 41 towards the bracket 4. During the movement of the exhaust pipe 42, it gradually moves away from the wire changing port 33 until the wire changing port 33 loses the shielding limit of the exhaust pipe 42 above, and at this time the wire changing port 33 is in an open state. Since the top of the bridge body 1 is also in an open state, then the staff can directly arrange the new cable into the inside of the bridge body 1 through the wire changing port 33, thereby improving the convenience of later wiring of the present invention; Similarly, when it is necessary to repair and maintain the cables in the bridge body 1 later, the exhaust pipe 42 can also be pushed to open the wire changing port 33, and then directly maintain and repair the cables in the bridge body 1 through the wire changing port 33. Compared with the traditional cable tray, after the present invention is installed, it can perform cable maintenance without disassembly, improving the convenience of cable maintenance of the present invention, and thus reducing the risk of high-altitude operation; In the normal state, that is, when the exhaust pipe 42 is not subjected to external force, the exhaust pipe 42 is supported by the elastic force of the spring 43, so that the exhaust pipe 42 is maintained above the wire changing port 33. Using the chimney effect of the exhaust pipe 42, when the air in the bridge body 1 is heated by the heat generated by the cable work, the heated gas can be accelerated and discharged under the action of the exhaust pipe 42, thereby improving the heat dissipation efficiency in the bridge body 1, and then reducing the situation of short circuit of the cables in the bridge body 1 due to excessive temperature.

[0018] It should be noted that the limiting plate 2 is made of a heat-conducting material and is laid at the bottom of the inner cavity of the bridge body 1. Then, when the cable is placed, it is directly placed on the top of the limiting plate 2. When the temperature inside the bridge body 1 rises due to the operation of the cable, the generated high temperature can be exported to the outside through the limiting plate 2, thus playing a role in further dissipating heat inside the bridge body 1.

[0019] Embodiment 2: Ventilation cavities 5 are formed inside both sides of the locking frame 3. The ventilation cavities 5 communicate with the limiting grooves 31. Both ends of the limiting plate 2 are located at the bottom of the ventilation cavities 5, and both ends of the limiting plate 2 are in contact with the inner walls of the ventilation cavities 5. Air inlets 51 are formed on the surfaces of both sides of the locking frame 3, and the air inlets 51 communicate with the ventilation cavities 5. The ventilation cavities 5 communicate with the ventilation openings 11. Specifically, on the basis of Embodiment 1, when the air inside the bridge body 1 is heated due to the heat generated by the operation of the cable, the temperature inside the bridge body 1 rises. During this process, the normal-temperature air or cold air outside the locking frame 3 enters the inside of the ventilation cavity 5 through the air inlet 51, and enters the inside of the bridge body 1 through the ventilation opening 11, and forms an air replacement with the hot air discharged through the exhaust pipe 42. At the same time, due to the temperature difference between the inside and outside of the bridge body 1 and in cooperation with the chimney effect of the exhaust pipe 42, the air circulation speed inside and outside the bridge body 1 is accelerated, thus accelerating the heat dissipation efficiency of the present invention. At the same time, since both ends of the limiting plate 2 are placed at the bottom of the ventilation cavity 5 and are in contact with the inner walls of the ventilation cavity 5, when the limiting plate 2 transfers heat to the outside, part of the heat of the limiting plate 2 can be transferred to the locking frame 3 through the inner walls of the ventilation cavity 5, and the heat is further transferred to the outside through the locking frame 3, thereby further improving the heat dissipation effect inside the bridge body 1 and further improving the safety of the cable working environment. When the present invention is applied and installed in an environment with heavy moisture, such as coastal areas, etc., when the moisture enters the inside of the bridge body 1 through the air inlet 51, the ventilation cavity 5 and the ventilation opening 11, the chimney effect can also be used to accelerate the removal of the moisture inside the bridge body 1, thus reducing the generation of condensation inside the bridge body 1 and improving the safety of the cable during operation inside the bridge body 1. Furthermore, since both ends of the limiting plate 2 are in contact with the inner walls of the ventilation cavity 5, part of the heat transferred by the limiting plate 2 to the outside is transferred to the ventilation cavity 5, and part of the heat of the ventilation cavity 5 is discharged to the outside through the locking frame 3, thereby increasing the temperature of the moisture around the locking frame 3. After the temperature of the moisture is increased by the heat conduction of the locking frame 3 and enters the inside of the ventilation cavity 5 through the air inlet 51, the moisture absorbs the heat of the limiting plate 2 inside the ventilation cavity 5 to further increase the temperature of the moisture. Meanwhile, under the action of the air vent 11, the speed of moisture entering the bridge body 1 is reduced by the air vent 11, so that the residence time of moisture in the air exchange chamber 5 is increased. Furthermore, it is ensured that the moisture in the air exchange chamber 5 can be heated more comprehensively. After the moisture is heated again, the temperature difference between it and the hot air in the bridge body 1 is further reduced. Then, on the premise of the reduced temperature difference, the probability of condensation in the bridge body 1 affected by moisture is reduced, and furthermore, the safety of the cable working environment in the bridge body 1 is improved.

[0020] It should be noted that the diameter of the air vent 11 gradually narrows from the outside of the bridge body 1 to the inside of the bridge body 1. As a result, the flow rate of moisture in the air exchange chamber 5 entering the bridge body 1 through the air vent 11 is reduced. At the same time, the flow velocity of the moisture entering the bridge body 1 from the narrow end of the air vent 11 becomes faster. Thus, before the moisture enters the bridge body 1 through the air vent 11, the residence time in the air exchange chamber 5 can be prolonged, the heating efficiency can be improved, and at the same time, the efficiency of discharging moisture outside the bridge body 1 is increased.

[0021] Embodiment 3: Memory metal wires 6 are slidably clamped on both sides of the bottom of the locking frame 3. The memory metal wires 6 are slidably connected to the clamping tracks 13, and the top of the memory metal wires 6 abuts against the top of the clamping tracks 13. Specifically, on the basis of Embodiment 1, after the two bridge bodies 1 of the present invention are clamped inside the locking frame 3, the top of the memory metal wire 6 can correspondingly fit on the bottom of the bridge body 1, and it is ensured that the bottom of each bridge body 1 is fitted with a memory metal wire 6. When the cables in the bridge body 1 are short-circuited due to other faults or reasons, the position where the short circuit occurs will quickly heat up, and then the temperatures of the limiting plate 2 and the bridge body 1 will also quickly rise. After the temperature of the bridge body 1 rises, its high temperature is transmitted to the memory metal wire 6, and then the memory metal wire 6 is restored after being heated. Its restored shape is as Figure 6 shown. When the maintenance personnel come to repair, they can observe the states of the respective memory metal wires 6 at the bottom of the locking frame 3 with the naked eye. Then, when the maintenance personnel observe the restored memory metal wires 6, they can preferentially detect the cables in the bridge bodies 1 on both adjacent sides of the restored memory metal wires 6, thereby improving the maintenance efficiency of the present invention.

[0022] It should be noted that the initial state of the memory metal wire 6 is as Figure 3As shown, the recovery temperature of the shape memory wire 6 can be designed according to the actual working temperature of the cable, ensuring that the shape memory wire 6 will not recover at the temperature during the normal operation of the cable, thereby improving the efficiency of finding the fault location during the later monitoring and maintenance. It should be noted that for the shape memory wire 6 in the present invention, it can be selected and used in actual applications to improve the troubleshooting and repair efficiency of cable fault points. For cables that need to be regularly inspected, it can be selected whether to install the shape memory wire 6 according to actual needs.

[0023] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transformer cable tray with a locking mechanism, comprising a cable tray main body (1), characterized in that: On both sides of the bridge frame body (1), ventilation openings (11) are provided, and on both sides of the bridge frame body (1), clamping grooves (12) are provided below the ventilation openings (11). An external locking assembly is provided for connecting and locking between the bridge frame bodies (1). A clamping track (13) is provided at the bottom of the bridge frame body (1). A limiting plate (2) is fixed at the bottom of the inner cavity of the bridge frame body (1), and both ends of the limiting plate (2) pass through the clamping grooves (12). A flow guiding assembly for guiding the gas inside the bridge frame body (1) is provided in the locking assembly.

2. The transformer cable tray with a locking mechanism according to claim 1, wherein: The locking assembly includes a locking frame (3). Limiting grooves (31) are provided at both ends of both sides of the locking frame (3). Double-headed bolts (32) are threadedly fixed at both ends of both sides of the locking frame (3). The limiting plate (2) is slidably connected to the limiting grooves (31), and the bridge frame body (1) and the locking frame (3) are fixedly connected by the double-headed bolts (32). A wire changing opening (33) is provided in the middle of the top of the locking frame (3).

3. A transformer cable tray with a locking mechanism according to claim 1, characterized in that: The flow guiding assembly includes a bracket (4). The bracket (4) is fixed at the top of one side of the locking frame (3). A plurality of limiting frames (41) are fixed on the side of the bracket (4) close to the wire changing opening (33). An exhaust pipe (42) is slidably connected to the outside of the limiting frame (41). Springs (43) are fixed on both sides of the limiting frame (41) on the surface of the bracket (4), and one end of the spring (43) is fixed to the exhaust pipe (42).

4. The transformer cable tray with a locking mechanism according to claim 3, characterized in that: The exhaust pipe (42) is located above the wire changing opening (33), and the exhaust pipe (42) abuts against the locking frame (3).

5. The transformer cable tray with a locking mechanism according to claim 3, wherein: A filter screen (44) is fixed inside the top of the exhaust pipe (42).

6. The transformer cable tray with a locking mechanism according to claim 3, wherein: Ventilation cavities (5) are provided inside both sides of the locking frame (3). The ventilation cavities (5) communicate with the limiting grooves (31). Both ends of the limiting plate (2) are located at the bottom of the ventilation cavities (5), and both ends of the limiting plate (2) abut against the inner walls of the ventilation cavities (5).

7. The transformer cable bridge with a locking mechanism according to claim 6, characterized in that: Air inlet openings (51) are provided on the surfaces of both sides of the locking frame (3), and the air inlet openings (51) communicate with the ventilation cavities (5). The ventilation cavities (5) communicate with the ventilation openings (11).

8. The transformer cable bridge with a locking mechanism according to claim 7, characterized in that: Memory metal wires (6) are slidably clamped at both sides of the bottom of the locking frame (3). The memory metal wires (6) are slidably connected to the clamping track (13), and the top of the memory metal wires (6) abuts against the top of the clamping track (13).

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