Relay box of lifting system

Abstract

The invention relates to the technical field of relays, in particular to a lifting system relay box which comprises a base and a box cover, a bottom plate is arranged on one side face of the base, a clamping seat is arranged on the upper surface of the bottom plate, a plurality of supporting plate nuts are arranged on the inner wall of the clamping seat, a plurality of round holes are symmetrically formed in the surface of the clamping seat, and second bolts are arranged in the round holes. A clamping groove is formed in the inner wall of the box cover, a plurality of through holes are formed in the inner wall of the clamping groove, and a bond strap is arranged on one side face of the base. According to the relay box of the take-off and landing system, the box cover is formed through compression molding of the carbon fiber composite material, high strength is guaranteed, meanwhile, remarkable light weight is achieved, and the strict requirement of aerospace equipment for weight reduction is met. And the base and the bottom plate are made of aluminum alloy and are subjected to conductive oxidation treatment, so that good structural rigidity is provided, an effective electromagnetic shielding layer is formed, and the anti-interference capability of equipment is enhanced.

Description

Technical Field

[0001] This invention relates to the field of relay technology, and in particular to a relay box for a take-off and landing system. Background Technology

[0002] As a critical electrical control component in aircraft takeoff and landing systems, the relay box is responsible for receiving commands and driving actuators such as pin pullers. Its reliability, environmental adaptability, and maintainability directly affect flight safety. Currently, traditional relay boxes used in this field often suffer from the following shortcomings: control circuits are often highly integrated onto a single circuit board, resulting in insufficient isolation between control channels. A failure in any part can easily lead to the complete loss of function of the relay box. Furthermore, the lack of necessary redundancy design makes it difficult to meet the requirements of high-reliability aviation systems for fault isolation and continuous operation. Therefore, we propose a new relay box for takeoff and landing systems. Summary of the Invention

[0003] The main objective of this invention is to provide a relay box for a take-off and landing system, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A landing system relay box includes a base and a cover. A base plate is provided on one side of the base, and a retainer is provided on the upper surface of the base plate. A plurality of support nuts are provided on the inner wall of the retainer. A plurality of circular holes are symmetrically opened on the surface of the retainer, and bolts are installed in the circular holes. A retaining groove is opened on the inner wall of the cover, and a plurality of through holes are opened on the inner wall of the retaining groove. A ground wire is provided on one side of the base. A circuit board is provided on the upper surface of the base plate inside the retainer, and a plurality of independent pin puller control modules are provided on the circuit board.

[0005] Preferably, the base has mounting holes symmetrically provided on one side of the ground wire, two sets of threaded holes are provided on one side of the base on both sides of the mounting holes, a bolt is provided in the threaded hole, an interface is provided in the mounting hole, and through grooves are symmetrically provided on the surface of the base plate.

[0006] Preferably, the shape and size of the interface are adapted to the mounting hole, the position of the through groove is adapted to the position of the threaded hole and communicates with the threaded hole, one end of the bolt passes through the through groove and extends into the threaded hole, and the bolt is threadedly engaged with the threaded hole. By adopting the above technical solution: the interface is an independent component that can be fixed to the base by the bolt; the interface can be standardized and replaced individually without replacing the entire base, facilitating maintenance and upgrades; and the bolt fastening rather than simple plugging ensures the electrical connection stability and grounding continuity of the interface under vibration.

[0007] Preferably, the shape and size of the card holder are adapted to the card slot, the position of the round hole is adapted to the position of the through hole, the round hole is connected to the through hole, and the position of the support plate nut is adapted to the round hole and is connected to the round hole.

[0008] Preferably, one end of the second bolt passes through the through hole and the round hole, and extends into the support nut. The support nut is threaded into the second bolt, and the retaining seat is engaged with the lid. By adopting the above technical solution: the lid can only be fastened to the base in one correct direction, which has the function of preventing mis-installation. The retaining engagement simplifies installation. All holes, including the through hole, the round hole, and the support nut, are coaxial, establishing a precise channel for the next step of bolt tightening. The second bolt engages with the support nut embedded in the retaining seat, forming a strong tensile and shear-resistant connection, ensuring that the lid will not loosen under severe vibration and impact.

[0009] Preferably, the main circuit board integrates control circuitry, power signals, and control signals. The main circuit board is electrically connected to the pin puller control module. The base and bottom plate are machined from aluminum alloy, with conductive oxidation and painting treatments on the surface. The cover is molded from carbon fiber prepreg, with a primer and topcoat applied to the surface. By adopting the above technical solution: the carbon fiber cover is lightweight and high-strength, suitable for aerospace applications; the conductive oxidation treatment of the base facilitates electromagnetic shielding grounding and corrosion resistance; and the painting provides further protection.

[0010] Compared with the prior art, the present invention has the following beneficial effects: 1. The housing cover is molded from carbon fiber composite material, achieving significant weight reduction while ensuring high strength, meeting the stringent weight reduction requirements of aerospace equipment. The base and bottom plate are made of aluminum alloy with conductive anodizing treatment, providing both good structural rigidity and forming an effective electromagnetic shielding layer, enhancing the equipment's anti-interference capability, and ensuring good grounding continuity through grounding wires; the main circuit board integrates control circuitry and features multiple independent pin-pulling control modules. This modular electrical layout ensures clear signal paths, isolates each control channel from others, avoids the propagation of a single point of failure, and improves the redundancy and mission reliability of the entire takeoff and landing control system.

[0011] 2. Through the directional locking mechanism of the card slot and the card holder, combined with the threaded locking of bolt two and the pre-embedded support plate nut, a dual fixing mechanism of mechanical interlocking and bolt fastening is formed. This design can effectively resist the high-frequency vibration and impact generated during aircraft take-off and landing, prevent the cover from loosening or shifting, and ensure the long-term reliable operation of the internal circuit board and modules in harsh environments. The interface, as an independent component, is fixed to the base by bolt one, achieving standardization and replaceability. When the interface is worn due to plugging and unplugging or accidental damage, it can be replaced individually without disassembling or scrapping the entire relay box, greatly reducing maintenance costs and time, and improving equipment uptime and logistical support efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a take-off and landing system relay box according to the present invention; Figure 2 This is a front view of a take-off and landing system relay box according to the present invention; Figure 3 In this invention Figure 2 Cross-sectional view of section AA; Figure 4 This is an exploded view of a relay box for a take-off and landing system according to the present invention; Figure 5 This is a schematic diagram of the base of a take-off and landing system relay box according to the present invention.

[0013] In the diagram: 1. Base; 11. Ground wire; 10. Mounting hole; 102. Threaded hole; 103. Bolt 1; 12. Interface; 120. Through slot; 13. Base plate; 14. Card holder; 140. Round hole; 141. Bolt 2; 15. Support plate nut; 3. Circuit board; 31. Pin puller control module; 2. Cover; 20. Card slot; 201. Through hole. Detailed Implementation

[0014] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0015] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0017] Please see Figure 1-5 The present invention provides a technical solution: A landing system relay box includes a base 1 and a cover 2. A base plate 13 is provided on one side of the base 1. A mounting bracket 14 is provided on the upper surface of the base plate 13. Several support nuts 15 are provided on the inner wall of the mounting bracket 14. Several circular holes 140 are symmetrically formed on the surface of the mounting bracket 14, and bolts 141 are installed in the circular holes 140. A slot 20 is formed on the inner wall of the cover 2, and several through holes 201 are formed on the inner wall of the slot 20. A ground wire 11 is provided on one side of the base 1. A circuit board 3 is provided on the upper surface of the base plate 13 within the mounting bracket 14. Several independent pin puller control modules 31 are provided on the circuit board 3. One side of the base 1 has symmetrical mounting holes 10 on both sides of the ground wire 11. The base 1 has two sets of threaded holes 102 on both sides of the mounting holes 10. A bolt 103 is installed in the threaded hole 102. An interface 12 is installed in the mounting hole 10. A through groove 120 is symmetrically opened on the surface of the base plate 13. The shape and size of the interface 12 are adapted to the mounting hole 10. The position of the through groove 120 is adapted to the position of the threaded hole 102 and communicates with the threaded hole 102. One end of the bolt 103 passes through the through groove 120 and extends into the threaded hole 102. The bolt 103 is threadedly engaged with the threaded hole 102.

[0018] In this embodiment, the shape and size of the card holder 14 are adapted to the card slot 20, the position of the round hole 140 is adapted to the position of the through hole 201, the round hole 140 communicates with the through hole 201, the position of the support plate nut 15 is adapted to the round hole 140 and communicates with the round hole 140, one end of the bolt 141 passes through the through hole 201 and the round hole 140 and extends into the support plate nut 15, the support plate nut 15 and the bolt 141 are threadedly engaged, the card holder 14 and the box cover 2 are engaged, the circuit main board 3 has integrated control circuit, power signal and control signal on its surface, the circuit main board 3 is electrically connected to the pin puller control module 31, the base 1 and the base plate 13 are made of aluminum alloy by machining, the surface is treated with conductive oxidation and spray painting, the box cover 2 is made of carbon fiber prepreg molding, and the surface is sprayed with primer and topcoat. The above solution involves a slot 20 inside the cover 2 and a slot 14 on the base 1. The two are shaped to match. The slot 14 is slid in from the back of the base 1 and inserted forward. A bolt 141 passes through the through hole 201 and the round hole 140, extending into the support nut 15 and forming a threaded lock with the support nut 15. This ensures that the cover 2 will not loosen during vibration. The cover 2 can only be fastened to the base 1 in one correct direction, which has the function of preventing misinstallation. The interface 12 is an independent part, which is fixed to the mounting hole 10 of the base 1 by a bolt 103. When the interface 12 is damaged, it can be replaced separately without replacing the entire relay box, which is convenient for maintenance.

[0019] It should be noted that the several pin puller control modules 31 on the circuit motherboard 3 are independent of each other, each receiving its own exclusive instructions from the circuit motherboard 3 to achieve individual control of the corresponding pin puller, thus avoiding the loss of all functions due to single-point damage. The circuit motherboard 3, as the core signal processing unit, receives external power and control signals, integrates and transmits the signals through its integrated control circuit, and provides working power and instructions to the pin puller control modules 31.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A landing system relay box, comprising a base (1) and a cover (2), characterized in that: The base (1) has a base plate (13) on one side, and a card seat (14) is provided on the upper surface of the base plate (13). The inner wall of the card seat (14) is provided with several support plate nuts (15). Several round holes (140) are symmetrically opened on the surface of the card seat (14). Bolts (141) are provided in the round holes (140). The inner wall of the box cover (2) is provided with a card groove (20). Several through holes (201) are opened on the inner wall of the card groove (20). A ground wire (11) is provided on one side of the base (1). A circuit main board (3) is provided on the upper surface of the base plate (13) inside the card seat (14). Several independent pin puller control modules (31) are provided on the circuit main board (3).

2. The take-off and landing system relay box according to claim 1, characterized in that: The base (1) has mounting holes (10) symmetrically opened on one side of the ground wire (11) and two sets of threaded holes (102) on one side of the base (1) on both sides of the mounting holes (10). A bolt (103) is installed in the threaded hole (102) and an interface (12) is installed in the mounting hole (10). A through groove (120) is symmetrically opened on the surface of the base plate (13).

3. The take-off and landing system relay box according to claim 1, characterized in that: The shape and size of the interface (12) are adapted to the mounting hole (10), the position of the through groove (120) is adapted to the position of the threaded hole (102) and communicates with the threaded hole (102), one end of the bolt (103) passes through the through groove (120) and extends into the threaded hole (102), and the bolt (103) is threadedly engaged with the threaded hole (102).

4. A take-off and landing system relay box according to claim 1, characterized in that: The shape and size of the card holder (14) are adapted to the card slot (20), the position of the round hole (140) is adapted to the position of the through hole (201), the round hole (140) is connected to the through hole (201), the position of the support plate nut (15) is adapted to the round hole (140) and is connected to the round hole (140).

5. A take-off and landing system relay box according to claim 4, characterized in that: One end of the second bolt (141) passes through the through hole (201) and the round hole (140) and extends into the tray nut (15). The tray nut (15) is threadedly engaged with the second bolt (141), and the card holder (14) is engaged with the box cover (2).

6. A take-off and landing system relay box according to claim 1, characterized in that: The circuit board (3) has integrated control circuits, power signals and control signals on its surface. The circuit board (3) is electrically connected to the pin puller control module (31). The base (1) and the bottom plate (13) are machined from aluminum alloy and the surface is treated with conductive oxidation and spray painting. The box cover (2) is made of carbon fiber prepreg molding and the surface is coated with primer and topcoat.

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