Lightning protection device for optoelectronic pod

Abstract

The utility model relates to a lightning protection device for optoelectronic pod, relates to conducting technology field, including fixed base, conducting block, wire, elastic component, the fixed base is used for setting in the shock absorber fixed base of pod, conducting block slidingly arranged on fixed base is used for with the conducting contact of pitching frame, one end of wire connects conducting block, the other end is used for connecting the connecting seat connected with the aircraft body, the elastic component is arranged between fixed base and conducting block, and the elastic component is used for applying pressure to conducting block to keep conducting block and pitching frame realize conducting connection, the elastic component set up in the utility model can continuously apply pressure, ensure that graphite friction block and pitching frame along the friction sliding of azimuth (horizontal roll) axis rotation direction, realize the effective conduction of pitching frame and aircraft body, release the lightning stroke electric quantity, reach the purpose that pitching frame prevents lightning stroke.

Description

Technical Field

[0001] This utility model relates to the field of conductive technology, and in particular to a lightning protection device for an optoelectronic pod. Background Technology

[0002] Conventional optoelectronic pods have two axes: azimuth (roll) and pitch. The pitch axis is supported by bearings on the azimuth (roll) frame, which is connected to the aircraft fuselage. To enhance environmental adaptability, the bearings are typically coated with grease or lubricating oil for rust prevention. This makes the pitch frame, from a conductivity perspective, an independent unit isolated from the aircraft fuselage. Under extreme conditions, a lightning strike can prevent the electrical charge on the pitch frame from being properly conducted to the aircraft fuselage, potentially resulting in damage to the pitch frame or its internal precision instruments.

[0003] Currently, for pods with limited azimuth (roll) angle rotation, a bundle of low-resistance wires is often used to connect the pitch frame and the pod mounting base (connected to the aircraft fuselage). This method causes the wires to twist as the azimuth (roll) frame rotates, resulting in changing wire resistance torque that affects the stability and accuracy of the pod.

[0004] For pods requiring 360° azimuth (roll) rotation, a single power cable is used, connecting the pitch frame and the connecting seat at both ends of a slip ring. This method consumes a large number of slip rings, increasing space and cost. Therefore, it is necessary to develop a lightning protection mechanism for optoelectronic pods that is not limited by azimuth (roll) rotation angle, has stable resistance, and is low in cost. Utility Model Content

[0005] The purpose of this utility model is to provide a lightning protection device for photoelectric pods, so as to solve the technical problems of limited operating angle, unstable resistance and poor contact that exist in the prior art.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a lightning protection device for an optoelectronic pod, comprising a fixed base, a conductive block, a wire, and an elastic component; the fixed base is used to be installed on the shock absorber fixed base of the pod; the conductive block is slidably installed on the fixed base for conductive contact with the pitch frame; one end of the wire is connected to the conductive block; the other end is used to connect to a connecting base connected to the aircraft fuselage; the elastic component is disposed between the fixed base and the conductive block, and the elastic component is used to apply pressure to the conductive block to maintain the conductive block and the pitch frame in a conductive connection.

[0007] Furthermore, the mounting base includes an upper plate and a lower plate disposed opposite to each other, and a side plate connecting the upper plate and the lower plate, the side plate being used to connect the mounting base to the shock absorber mounting base.

[0008] Furthermore, the upper plate is provided with a trapezoidal through hole through which the wire passes, and the lower plate is provided with a corresponding trapezoidal through hole through which the conductive block passes.

[0009] Furthermore, the conductive block includes a friction block seat and a graphite friction block fixed to the bottom of the friction block seat. The graphite friction block is used to abut against the conductive plane of the pitch frame and generate frictional sliding as it rotates. The wire is embedded in the graphite friction block.

[0010] Furthermore, a flange is fixedly provided at the lower position of the friction block seat, and the flange is provided with mounting holes corresponding to the positions of the upper plate and the lower plate.

[0011] Furthermore, the elastic component includes a guide pin and a spring. The guide pin passes through the corresponding mounting holes on the lower plate, the flange, and the upper plate in sequence. The spring is sleeved on the guide pin and is located between the upper plate and the flange. The flange can slide along the guide pin.

[0012] Furthermore, the distance between the lower end face of the flange and the lower plate is the wear compensation amount of the graphite friction block.

[0013] Furthermore, the end of the guide pin is provided with an anti-loosening nut for securing the guide pin.

[0014] Based on the above technical solution, the beneficial effects of this utility model are:

[0015] 1. The elastic component of this utility model can continuously apply pressure to ensure that the graphite friction block and the pitch frame slide along the azimuth (roll) axis rotation direction, realize effective conduction between the pitch frame and the aircraft body, release lightning strike electricity, achieve the purpose of lightning protection for the pitch frame, and at the same time ensure that the pressure is stable for a long time. When the graphite friction block wears due to friction, the friction block seat can slide along the guide pin to automatically compensate for the wear, avoiding the poor contact problem that is easy to occur in traditional rigid connections.

[0016] 2. This utility model enables mechanisms such as photoelectric pods that require continuous rotation to maintain stable and controllable resistance and reliably conduct current during rotation, thereby achieving lightning protection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 for Figure 1 Top view.

[0019] The markings in the diagram are: 1. Fixing base, 11. Upper plate, 12. Side plate, 13. Lower plate, 2. Friction block seat, 3. Graphite friction block, 4. Wire, 5. Guide pin, 6. Spring, 7. Flange, 8. Anti-loosening nut. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0022] It should also be noted that, unless otherwise stated, "multiple" means two or more; the terms "upper," "lower," "left," "right," "front end," "rear end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation of this utility model. Changes or adjustments to the relative relationships, without substantially altering the technical content, should also be considered as within the scope of implementation of this utility model.

[0023] like Figure 1-2 As shown, a lightning protection device for an optoelectronic pod includes a fixed base 1, a conductive block, a wire 4, and an elastic component. The fixed base 1 is mounted on the shock absorber mounting base of the pod. The conductive block is slidably mounted on the fixed base 1 for conductive contact with the pitch frame. The elastic component is located between the fixed base 1 and the conductive block, and is used to press the conductive block firmly onto the pitch frame to achieve a conductive connection.

[0024] Specifically, the mounting base 1 includes an upper plate 11 and a lower plate 13 arranged opposite to each other, and a side plate 12 connecting the upper plate 11 and the lower plate 13. The side plate 12 is used to connect the mounting base 1 to the shock absorber mounting base. The upper plate 11 has a trapezoidal through hole through which the wire 4 passes, and the lower plate 13 has a corresponding trapezoidal through hole through which the conductive block passes. In addition, the upper plate 11 and the lower plate 13 are also provided with multiple mounting holes at corresponding positions.

[0025] Furthermore, the conductive block includes a friction block seat 2 and a graphite friction block 3 fixed to the bottom of the friction block seat 2. The graphite friction block 3 is used to abut against the conductive plane of the pitch frame and generate frictional sliding with its rotational movement. A flange 7 is fixedly provided at the lower position of the friction block seat 2. The distance between the lower end face of the flange 7 and the lower plate 13 is the graphite wear compensation amount. The flange 7 is provided with mounting holes corresponding to the positions of the upper plate 11 and the lower plate 13. Specifically, the wire 4 adopts a smooth Z-shaped wiring, and one end is pre-embedded in the graphite friction block 3; the wire provides a reliable electrical connection path between the connecting seat connected to the body and the conductive block. The graphite friction block and the pitch frame rub and slide along the azimuth (roll) axis rotation direction to realize the connection between the pitch frame and the connecting seat, thereby achieving the purpose of lightning protection for the pitch frame.

[0026] Furthermore, the elastic component includes a guide pin 5 and a spring 6. The guide pin 5 passes sequentially through the corresponding mounting holes on the lower plate 13, the flange 7, and the upper plate 11. The spring 6 is sleeved on the guide pin 5 and located between the upper plate 11 and the flange 7. The flange 7 can slide along the guide pin 5. An anti-loosening nut 8 is provided at the end of the guide pin to secure it. The combination of the guide pin 5 and the spring 6 achieves automatic position compensation for wear of the graphite friction block 3, resulting in stable resistance, reliable contact, and continuous electrical conductivity.

[0027] As a preferred option, three guide pins are arranged in an isosceles triangle, with the center of gravity of the three guide pins 5 coinciding with the center of the graphite friction block 3, which can achieve the balance of the spring's thrust on the friction block seat.

[0028] This invention utilizes the friction contact between the graphite friction block 3 and the conductive plane of the pitch frame to form a conductive path. The wire 4, embedded within the graphite friction block 3, conducts the current to the connecting seat connected to the aircraft fuselage, achieving conductivity between the pitch frame and the aircraft fuselage and releasing lightning strike charge. Simultaneously, the spring 6 and guide pin 5 apply continuous pressure to the graphite friction block 3. When the graphite friction block 3 wears due to friction, the friction block seat 2 can slide along the guide pin 5, automatically compensating for wear, ensuring stable contact pressure, maintaining reliable conductivity, and meeting the lightning protection requirements during the pod's azimuth (roll) n×360° rotation.

[0029] It should be noted that the above embodiments are only used to illustrate the present utility model, but the present utility model is not limited to the above embodiments. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A lightning protection device for a photoelectric pod, characterized in that: It includes a fixed base (1), a conductive block, a wire (4), and an elastic component; the fixed base (1) is used to be installed on the shock absorber fixed base of the pod; the conductive block is slidably installed on the fixed base (1) for conductive contact with the pitch frame; One end of the wire (4) is connected to the conductive block; The other end is used to connect to the connecting seat connected to the aircraft body; the elastic component is located between the fixed seat (1) and the conductive block, and the elastic component is used to apply pressure to the conductive block to maintain the conductive block and the pitch frame to achieve conductive connection.

2. The lightning protection device for a photoelectric pod according to claim 1, characterized in that: The mounting base (1) includes an upper plate (11) and a lower plate (13) arranged opposite to each other, and a side plate (12) connecting the upper plate (11) and the lower plate (13), the side plate (12) being used to connect the mounting base (1) to the shock absorber mounting base.

3. The lightning protection device for a photoelectric pod according to claim 2, characterized in that: The upper plate (11) is provided with a trapezoidal through hole through which the wire (4) passes, and the lower plate (13) is provided with a corresponding trapezoidal through hole through which the conductive block passes.

4. The lightning protection device for a photoelectric pod according to claim 3, characterized in that: The conductive block includes a friction block seat (2) and a graphite friction block (3) fixed to the bottom of the friction block seat (2). The graphite friction block (3) is used to abut against the conductive plane of the pitch frame and generate frictional sliding as it rotates. The wire (4) is embedded in the graphite friction block (3).

5. The lightning protection device for a photoelectric pod according to claim 4, characterized in that: The friction block seat (2) is fixedly provided with a flange (7) at a lower position, and the flange (7) is provided with mounting holes corresponding to the positions of the upper plate (11) and the lower plate (13).

6. The lightning protection device for a photoelectric pod according to claim 5, characterized in that: The elastic component includes a guide pin (5) and a spring (6). The guide pin (5) passes through the corresponding mounting holes on the lower plate (13), the flange (7), and the upper plate (11) in sequence. The spring (6) is sleeved on the guide pin (5) and located between the upper plate (11) and the flange (7). The flange (7) can slide along the guide pin (5).

7. The lightning protection device for a photoelectric pod according to claim 6, characterized in that: The distance between the lower end face of the flange (7) and the lower plate (13) is the wear compensation amount of the graphite friction block (3).

8. The lightning protection device for a photoelectric pod according to claim 7, characterized in that: The end of the guide pin (5) is provided with a locking nut (8) for fixing the guide pin.

Images