Quick connecting assembly for adjacent navigation-aid lamp boxes of airport

Abstract

The utility model relates to the technical field of airport visual aid-to-navigation light, in particular to a quick connecting assembly for adjacent aid-to-navigation light boxes of an airport, which comprises a flexible metal tube and transverse interface assemblies, a primary cable jumper and a grounding jumper are arranged in the flexible metal tube 14, and the transverse interface assemblies are arranged at two ends of the flexible metal tube. According to the quick connecting assembly for the adjacent navigation-aid lamp boxes of the airport, the prefabricated primary cable jumper wire, the prefabricated grounding jumper wire and the flexible metal pipe are adopted as assemblies to connect the lamp boxes and the adjacent lamp boxes, the technical problem of quick transverse connection between the adjacent lamp boxes is solved, materials and labor cost are saved, and construction efficiency is improved; aC power connectors are additionally arranged at two ends of the primary cable jumper, so that the technical problem of on-site power taking maintenance in areas close to a light strip and the like is solved, and the use is convenient; in addition, the transverse connector assembly is provided with two-stage waterproof measures, and the waterproof performance of the connector of the lamp box line pipe is improved.

Description

Technical Field

[0001] This utility model relates to the field of airport visual navigation aid lighting technology, and in particular to a quick connection component for adjacent navigation aid light boxes at airports. Background Technology

[0002] The isolation transformer box (i.e., light box) of the airport visual navigation lighting system is a barrel-shaped equipment installation box used to install the isolation transformer to power the front-end navigation lights. Existing light boxes are made entirely of cast iron or aluminum alloy, installed in a sealed, underground manner, and are independent of each other. During construction, the primary cable requires underground conduit laying and on-site cable joint fabrication to connect the light boxes in series. In cases of densely arranged light boxes (such as approach lights), this process results in dense conduit and cable joints, and the manual sealing of conduit interfaces and fabrication of cable joints takes a long time, leading to low installation efficiency. Furthermore, if there are defects in the sealing of the conduit interfaces, there is a risk of water entering the light box.

[0003] Meanwhile, because areas such as the airport approach lighting strip are far from navigation stations and on-site transformers, it is impossible to draw power locally when using power tools for maintenance of the navigation lighting system. Usually, it is necessary to use batteries or diesel generators to generate electricity, which is very inconvenient. Utility Model Content

[0004] Based on the above problems, the purpose of this utility model is to provide a quick connection component for adjacent airport navigation light boxes. This utility model adopts the following technical solution:

[0005] This utility model provides a quick connection component for adjacent navigation light boxes at airports, including:

[0006] A flexible metal conduit, wherein a primary cable jumper and a grounding jumper are provided in the flexible metal conduit;

[0007] A lateral interface assembly is provided at both ends of the flexible metal conduit. The lateral interface assembly includes a connecting steel pipe and a compression fitting metal pipe joint. The connecting steel pipe passes through and is fixed to the side wall of the enclosure. The outer port of the connecting steel pipe is sleeved with the compression fitting metal pipe joint. The compression fitting metal pipe joint is connected to the end of the flexible metal conduit. The outer wall of the inner end of the connecting steel pipe is threaded, and the inner end of the connecting steel pipe is threaded with a sealing cap. A sealing component is provided in the inner port of the connecting steel pipe. The sealing component is sealed with the primary cable jumper and the grounding jumper.

[0008] Preferably, the sealing assembly includes a T-shaped rubber sealing gasket and a snap-fit ​​blocking gasket;

[0009] The T-shaped rubber sealing gasket consists of two cylinders with different diameters. The diameter of the narrower end is adapted to the inner diameter of the connecting steel pipe, and the diameter of the wider end is adapted to the outer diameter of the connecting steel pipe. A primary cable through-hole and a grounding cable through-hole are formed in the middle of the T-shaped rubber sealing gasket. The diameter of the primary cable through-hole is adapted to the outer diameter of the primary cable jumper, and the diameter of the grounding cable through-hole is adapted to the outer diameter of the grounding jumper. A movable transverse slit is formed on one side of the T-shaped rubber sealing gasket, dividing the primary cable through-hole and the grounding cable through-hole.

[0010] The outer diameter of the snap-fit ​​blocking gasket is adapted to the inner diameter of the connecting steel pipe, and a C-shaped notch is provided on the snap-fit ​​blocking gasket. The opening width of the C-shaped notch is adapted to the outer diameter of the primary cable jumper.

[0011] Preferably, the primary cable jumper includes a primary cable and a primary cable jumper connector and an AC power connector disposed at the end of the primary cable;

[0012] The primary cable jumper connector is connected to the primary cable connector on the isolation transformer, and the AC power connector is connected to the AC power input interface.

[0013] Preferably, both ends of the grounding jumper are provided with grounding terminals, and the grounding terminals are fixed on the inner wall of the enclosure.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] This utility model provides a quick connection component for adjacent airport navigation aid light boxes. It uses prefabricated primary cable jumpers and grounding jumpers, along with flexible metal conduits, to connect the light box and adjacent light boxes, solving the technical challenge of rapid lateral connection between adjacent light boxes, saving material and labor costs, and improving construction efficiency. AC power connectors are added to both ends of the primary cable jumpers, solving the technical problem of on-site power supply for maintenance in areas such as approach lighting strips, and facilitating use. Furthermore, the lateral interface component is equipped with secondary waterproofing measures, improving the waterproof performance of the light box conduit interface. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of the airport navigation aid adjacent light box in this embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the box in an embodiment of this utility model;

[0019] Figure 3This is a schematic diagram of the bottom tray structure in an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the isolation transformer in an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram showing the connection between the power module, water immersion sensor module, and smart switch module in an embodiment of this utility model.

[0022] Figure 6 This is a schematic diagram of the structure of a primary cable jumper in an embodiment of this utility model;

[0023] Figure 7 This is a schematic diagram showing the connection between the transverse interface component and the flexible metal tube in an embodiment of this utility model;

[0024] Figure 8 This is a structural schematic diagram of the horizontal interface component in an embodiment of the present invention.

[0025] Figure 9 This is a schematic diagram of the structure of the T-shaped rubber sealing gasket in an embodiment of this utility model;

[0026] Figure 10 This is a schematic diagram of the snap-fit ​​blocking pad structure in an embodiment of this utility model;

[0027] Figure 11 This is a schematic diagram of the main structure of multiple navigation light boxes connected in an embodiment of this utility model;

[0028] Figure 12 This is a top view schematic diagram of multiple navigation light boxes being connected adjacently at varying angles in an embodiment of this utility model.

[0029] Explanation of reference numerals in the attached diagram: 1. Enclosure; 101. Primary conduit pre-drilled hole; 102. Secondary cable hole; 103. Secondary conduit; 2. Enclosure cover; 201. Enclosure cover body; 202. Cover edge; 203. Opening notch; 204. Rubber gasket sealing ring; 3. Bottom tray; 301. T-shaped support arm; 4. Isolation transformer; 401. Primary cable connector; 402. Secondary cable connector; 5. AC / DC power module; 501. AC power input interface; 502. DC power output interface; 6. Water immersion sensor module; 601. Leakage sensing wire; 602. Leakage wire interface; 603. Water immersion signal converter; 604. Water immersion sensor communication interface; 605. Water immersion sensor power interface; 7. Intelligent switch module; 701. LCD display screen; 702. Setting button; 703. Adjustment button; Test interface; 704, Cable input / output interface; 705, Intelligent switch communication interface; 706, Intelligent switching power supply interface; 8, Horizontal interface assembly; 801, Connecting steel pipe; 8011, Threaded socket; 802, Compression fitting metal pipe joint; 803, Sealing cap; 804, Sealing assembly; 804-1, T-type rubber sealing gasket; 804-1-1, Primary cable threading hole; 804-1-2, Grounding cable threading hole; 804-1-3, Movable horizontal seam; 804-2, Snap-fit ​​blocking gasket; 804-2-1, C-shaped bayonet; 9, Primary cable jumper; 901, Primary cable; 902, Primary cable jumper connector; 903, AC power connector; 10, Secondary cable; 11, Grounding terminal; 12, Grounding jumper; 13, Front-end auxiliary lamp; 14, Flexible metal pipe. Detailed Implementation

[0030] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] like Figures 1 to 5 , Figure 11 and 12 As shown, this embodiment discloses a quick connection assembly for an airport adjacent navigation aid light box, including a light box, a self-test power supply assembly, a lateral interface assembly 8, a primary cable jumper 9, a secondary cable 10, a grounding terminal 11, and a grounding jumper 12.

[0032] The lightbox includes a body 1 and a cover 2. The body 1 is cylindrical and made of cast iron or aluminum alloy, with a suitable diameter and height. The cover 2 is fastened to the top of the body 1. Symmetrical primary conduit pre-drilled holes 101 are provided on the lower sides of both sides of the body 1 for installing lateral interface assemblies 8. Flexible metal conduits 14 are arranged between two adjacent lightboxes, with both ends of the flexible metal conduits 14 connected to the corresponding lateral interface assemblies 8. Primary cable jumpers 9 and grounding jumpers 12 pass through the flexible metal conduits 14 between the two lightboxes. A self-test power supply assembly for powering the front-end navigation lights 13 is installed inside the body 1. The primary cable jumper 9 is electrically connected to the self-test power supply assembly. The grounding jumper 12 is connected to the body 1, and a grounding terminal 11 is fixed on the inner wall of the body 1 for easy connection of the grounding jumper 12.

[0033] The housing 1 has a secondary cable hole 102 on the side facing the front navigation light 13. The secondary cable hole 102 is connected to the front navigation light 13 through a secondary conduit 103. The secondary cable 10 is laid in the secondary conduit 103 and electrically connects the self-test power supply component and the front navigation light 13. The secondary conduit 103 is made of welded steel pipe. After the secondary cable 10 is laid, both ends of the secondary conduit 103 are sealed with sealant to prevent water leakage.

[0034] The cover 2 is made of special glass and includes the cover body 201 and the cover edge 202. The cover body 201 is disc-shaped and made of semi-transparent aluminum silicate high-pressure resistant special glass, with a pressure resistance of over 10 MPa and a bending strength of 300-500 MPa. The surface has a reserved observation area, and the rest of the surface is frosted to prevent glare. The transparency of the reserved observation area is such that maintenance personnel can visually observe the inside of the box lights and read the data displayed by the intelligent switch module 7 at close range. The cover edge 202 has an opening notch 203, which is used to pry open the cover body 201 for easy maintenance. A rubber gasket sealing ring 204 is installed between the inner wall of the cover edge 202 and the box body 1 to prevent water leakage.

[0035] The self-test power supply component includes a bottom tray 3, which is made of stainless steel and is disc-shaped with a diameter adapted to the inner diameter of the housing 1. The bottom tray 3 is positioned below the pre-drilled hole 101 of the primary conduit, and is approximately 3 cm above the bottom of the housing 1. The lower space is used to install a water leakage sensing wire 601 to prevent damage to the isolation transformer 4 from minor water immersion. The bottom tray 3 is located inside the housing 1, and the isolation transformer 4 is placed on it. The isolation transformer 4 has two primary cable connectors 401 and one secondary cable connector 402. One primary cable connector 401 is a cable input connector used to connect the isolation transformer 4 in the adjacent light box in series, and the other primary cable connector 401 is a cable output connector used to connect the isolation transformer 4 in the next adjacent light box in series. The secondary cable connector 402 is used to supply power to the front navigation lights 13.

[0036] A T-shaped support arm 301, made of stainless steel, is fixed on the bottom tray 3. An AC / DC power module 5, a water immersion sensor module 6, and a smart switch module 7 are mounted on the T-shaped support arm 301. The T-shaped support arm 301 prevents rainwater from seeping in along the inner wall of the enclosure 1 and damaging the electrical modules. In this embodiment, the AC / DC power module 5 is AC220V / DC12V.

[0037] like Figure 5 As shown, the AC / DC power module 5 is equipped with an AC power input interface 501 and a DC power output interface 502. The AC power input interface 501 is electrically connected to the primary cable jumper 9, and the DC power output interface 502 is electrically connected to the water immersion sensor power interface 605 and the intelligent switching power supply interface 706.

[0038] The water immersion sensor module 6 uses existing mature products, including a water leakage sensing line 601, a water leakage line interface 602, a water immersion signal converter 603, an RS485 water immersion sensor communication interface 604, and a DC water immersion sensor power interface 605. The lower end of the water leakage sensing line 601 is coiled at the bottom of the housing 1 to monitor the water immersion situation inside the housing 1. The upper end of the water leakage sensing line 601 is connected to the water immersion signal converter 603 through the water leakage line interface 602. The RS485 water immersion sensor communication interface 604 is connected to the RS485 smart switch communication interface 705 of the smart switch module 7. When the water leakage sensing line 601 detects water immersion, the water immersion signal converter 603 immediately sends an alarm linkage signal to the smart switch module 7.

[0039] The intelligent switch module 7 adopts an existing mature power monitoring switch module, which has functions such as automatic monitoring of the output power of the isolation transformer 4, receiving alarm linkage signals from the water immersion sensor module 6, and automatically opening / closing the power supply circuit formed by the secondary cable 10 according to preset thresholds and received alarm linkage signals. The intelligent switch module 7 is externally equipped with an LCD display 701, a setting button 702, a debugging interface 703, a cable input / output interface 704, an RS485 intelligent switch communication interface 705, and a DC intelligent switching power supply interface 706. The LCD display 701 is used to display the monitored power output. The system displays the output voltage, current, and other electrical quantities of the isolation transformer 4, as well as the switch status of the secondary cable power supply circuit. The setting button 702 allows setting the power alarm threshold. The debugging interface 703 connects to a PC to configure the intelligent switch module 7. The cable input / output interface 704 connects the secondary cable connector 402 and the front-end navigation light 13 via the secondary cable 10 to power the front-end navigation light 14. The RS485 signal input / output interface 705 connects to the water immersion sensor module 6 and, when network conditions permit, can communicate with the navigation light monitoring system to upload monitoring data.

[0040] like Figure 6 As shown, the primary cable jumper 9 includes a primary cable 901, and a primary cable jumper connector 902 and an AC power connector 903 disposed at the end of the primary cable 901. The length of the primary cable 901 is determined according to the distance between adjacent light boxes. The primary cable jumper connector 902 is used to connect to the primary cable connector 401 of the isolation transformer 4, and the AC power connector 903 is used to connect to the power input interface 501 of the AC / DC power module 5AC. The primary cable jumper 9 can be a machine-prefabricated finished cable that can be plugged in and used immediately.

[0041] like Figure 7 and 8As shown, the transverse interface assembly 8 includes a connecting steel pipe 801, a compression fitting 802, a sealing cap 803, and a sealing component 804. The connecting steel pipe 801 is made of DN25 steel pipe, with threaded fittings 8011 on the outer walls of both ends. The connecting steel pipe 801 is welded into the primary conduit pre-drilled hole 101 in the housing 1. The compression fitting 802 is a commercially available product, with an embedded thread at the fitting end. The compression fitting 802 is fitted onto the threaded fitting 8011 on the outer end of the connecting steel pipe 801. The other end of the connector 802 is connected to the flexible metal pipe 14. After the ferrule-type metal pipe connector 802 is connected and installed, the joint is sealed with glass glue. When the outer port of the connecting steel pipe 801 is not in use, it is sealed with sealant. The sealing cap 803 is made of plastic, with embedded threads, and is fitted onto the connecting thread 8011 at the inner end of the connecting steel pipe 801. A sealing component 804 is provided in the inner port of the connecting steel pipe 801. The sealing component 804 is sealed and cooperates with the primary cable jumper 9 and the grounding jumper 12.

[0042] like Figure 9 and 10 As shown, the sealing assembly 804 includes a T-shaped rubber sealing gasket 804-1 and a snap-fit ​​blocking gasket 804-2. The T-shaped rubber sealing gasket 804-1 is made of waterproof rubber and consists of two cylinders with different diameters. The diameter of the thinner end is adapted to the inner diameter of the connecting steel pipe 801, and the diameter of the thicker end is adapted to the outer diameter of the connecting steel pipe 801. The T-shaped rubber sealing gasket 804-1 has a primary cable through hole 804-1-1 and a grounding cable through hole 804-1-2 in the middle, and their diameters are adapted to the outer diameters of the primary cable and the grounding cable, respectively. A movable transverse slit 804-1-3 is left on one side of the T-shaped rubber sealing gasket 804-1-1, which cuts the primary cable through hole 804-1-1 and the grounding cable through hole 804-1-2 in half. The snap-fit ​​blocking gasket 804-2 is made of stainless steel. The outer diameter of the snap-fit ​​blocking gasket 804-2 is the same as the inner diameter of the connecting steel pipe 801. A C-shaped bayonet 804-2-1 is provided on the snap-fit ​​blocking gasket 804-2. The opening width of the C-shaped bayonet 804-2-1 is adapted to the outer diameter of the primary cable jumper 9.

[0043] After the primary cable jumper 9 and grounding jumper 12 are laid through the connecting steel pipe 801, the movable transverse seam 804-1-3 on the T-shaped rubber sealing gasket 804-1 is opened, and the primary cable jumper 9 and grounding jumper 12 are respectively inserted into the primary cable threading hole 804-1-1 and the grounding cable threading hole 804-1-2. Then, the thin end of the T-shaped rubber sealing gasket 804-1 is inserted into the inner port of the connecting steel pipe 801. Then, the C-shaped blocking gasket 804 is used to hold the primary cable jumper 9 and grounding jumper 12 and press them on the top of the thick end of the T-shaped rubber sealing gasket 804-1. Finally, the sealing cap 803 is used to cover and seal the inner port of the connecting steel pipe 801.

[0044] In this embodiment, the functions that the airport navigation aid adjacent light box can achieve include:

[0045] When the intelligent switch module 7 detects that the output power of the isolation transformer 4 is less than a certain threshold, which will cause the light intensity of the front navigation light 13 to fail to meet the aircraft's approach requirements, or when the intelligent switch module 7 detects that the output power of the isolation transformer 4 fluctuates and momentarily exceeds a certain threshold, which may damage the front navigation light 14, or when the intelligent switch module 7 receives an alarm linkage signal from the water immersion sensor module 6, or when the intelligent switch module 7 itself is damaged, it automatically cuts off the power supply circuit formed by the secondary cable 10, shuts down the front navigation light 13, and enables the navigation light monitoring system to quickly detect the open circuit signal of the front navigation light 13 and issue an alarm, prompting the on-duty personnel to go for repair.

[0046] When maintenance personnel are performing on-site repairs, they can observe the situation inside the enclosure 1 through the transparent cover 2 and directly read data such as voltage, current, and switch status on the LCD screen 701 to diagnose the fault.

[0047] After the output power of the isolation transformer 4 returns to normal and the alarm linkage signal of the water immersion sensor module 6 is eliminated, the intelligent switch module 7 automatically connects the power supply circuit formed by the secondary cable 10, turns on the front-end navigation lights 13, and provides the aircraft with navigation light approach guidance signals.

[0048] In this embodiment, the airport navigation aid adjacent light box implements multi-level waterproofing measures: installing a rubber gasket sealing ring 204 on the inner side of the cover edge 202 of the box cover 2 to prevent water seepage is the first level of waterproofing measures; using a bottom tray 3 to install an isolation transformer 4 and electrical modules such as AC / DC power module 5, water immersion sensor module 6, and smart switch module 7 to prevent damage to electrical performance when a small amount of water enters, is the second level of waterproofing measures.

[0049] After installing the compression fitting metal pipe joint 802 at the outer port of the connecting steel pipe 801 of the transverse interface assembly 8, the joint is sealed with glass glue, or when the outer port of the connecting steel pipe 801 is not in use, it is sealed with sealant, which is the first level of waterproofing; installing T-type rubber sealing gasket 804-1 and sealing cap 803 at the inner port of the connecting steel pipe 801 is the second level of waterproofing.

[0050] After the secondary cable 10 is laid, the two ends of the secondary conduit 103 are sealed with sealant to prevent water seepage, thus forming a two-level waterproofing measure.

[0051] When water enters the housing 1 and triggers the water leakage sensing line 601, the water immersion sensor module 6 immediately sends an alarm linkage signal to the intelligent switch module 7. After receiving the alarm linkage signal, the intelligent switch module 7 automatically cuts off the power supply circuit of the front-end navigation lights 13 and sends an alarm prompt for maintenance to the navigation light monitoring system platform, which is the third level of waterproofing.

[0052] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A quick-connect assembly for airport adjacent navigation aid light boxes, characterized in that, include: A flexible metal conduit (14) is provided with a primary cable jumper (9) and a grounding jumper (12). Horizontal interface assembly (8); The horizontal interface assembly (8) is disposed at both ends of the flexible metal tube (14). The horizontal interface assembly (8) includes a connecting steel pipe (801) and a compression fitting metal pipe joint (802). The connecting steel pipe (801) passes through and is fixed on the side wall of the box (1). The outer port of the connecting steel pipe (801) is sleeved with the compression fitting metal pipe joint (802). The compression fitting metal pipe joint (802) is connected to the end of the flexible metal tube (14). The outer wall of the inner end of the connecting steel pipe (801) is provided with threads, and the inner end of the connecting steel pipe (801) is threaded with a sealing cap (803). A sealing assembly (804) is provided in the inner port of the connecting steel pipe (801). The sealing assembly (804) is sealed with the primary cable jumper (9) and the grounding jumper (12).

2. The quick-connect assembly for airport adjacent navigation light boxes according to claim 1, characterized in that: The sealing assembly (804) includes a T-shaped rubber sealing gasket (804-1) and a snap-fit ​​blocking gasket (804-2). The T-shaped rubber sealing gasket (804-1) is composed of two cylinders with different diameters. The diameter of the thinner end is adapted to the inner diameter of the connecting steel pipe (801), and the diameter of the thicker end is adapted to the outer diameter of the connecting steel pipe (801). The T-shaped rubber sealing gasket (804-1) has a primary cable through hole (804-1-1) and a grounding cable through hole (804-1-2) in the middle. The diameter of the primary cable through hole (804-1-1) is adapted to the outer diameter of the primary cable jumper (9), and the diameter of the grounding cable through hole (804-1-2) is adapted to the outer diameter of the grounding jumper (12). A movable transverse slit (804-1-3) is provided on one side of the T-shaped rubber sealing gasket (804-1-1) to divide the primary cable through hole (804-1-1) and the grounding cable through hole (804-1-2). The outer diameter of the snap-fit ​​blocking gasket (804-2) is adapted to the inner diameter of the connecting steel pipe (801). A C-shaped bayonet (804-2-1) is provided on the snap-fit ​​blocking gasket (804-2). The opening width of the C-shaped bayonet (804-2-1) is adapted to the outer diameter of the primary cable jumper (9).

3. The quick-connect assembly for airport adjacent navigation light boxes according to claim 1, characterized in that: The primary cable jumper (9) includes a primary cable (901) and a primary cable jumper connector (902) and an AC power connector (903) disposed at the end of the primary cable (901). The primary cable jumper connector (902) is connected to the primary cable connector (401) on the isolation transformer (4), and the AC power connector (903) is connected to the AC power input interface (501).

4. The quick-connect assembly for airport adjacent navigation light boxes according to claim 1, characterized in that: Both ends of the grounding jumper (12) are provided with grounding terminals (11), and the grounding terminals (11) are fixed on the inner wall of the box (1).

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