A support arm, gondola and aircraft

Abstract

The utility model discloses a kind of support arm, pod and aircraft, wherein support arm includes: first connecting end and second connecting end, wherein first connecting end is equipped with rotary drive device, rotary drive device is used to be connected with optical instrument;Second connecting end is equipped with support shaft, one end of support shaft is used to be connected with the side of optical instrument away from driving end, the other end of support shaft can be moved along its axial direction and be connected in second connecting end.When installing, first the side of optical instrument is fixed on rotary drive device, then the axial position of support shaft is adjusted, to adapt the processing deviation of optical instrument in axial direction, when adjusting to support shaft and optical instrument contact, support shaft and optical instrument are fixed again.By movable support shaft, the processing tolerance of optical instrument, driving end and support shaft in axial direction can be effectively relaxed, so that processing cost can be reduced, and assembly quality can also be improved.

Description

Technical Field

[0001] This utility model relates to the field of aircraft technology, and in particular to a support arm, a pod, and an aircraft. Background Technology

[0002] A pod is a support device that can be suspended from an aircraft. Optical instruments, such as image acquisition devices, can be installed on the pod to acquire image signals.

[0003] A pod typically includes a support arm and a light fixture. The light fixture can be movably connected to the support arm, and its attitude can be adjusted via the support arm to obtain information about the target object.

[0004] However, existing support arms and optical fixtures suffer from poor assembly accuracy and uncontrollable mating dimensions due to manufacturing errors, requiring control of high-precision machining tolerances, which increases processing costs.

[0005] Therefore, how to provide a support arm that facilitates optical assembly is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0006] One objective of this invention is to provide a support arm that can relax machining tolerances, thereby reducing machining costs and avoiding assembly quality problems caused by machining deviations. Another objective is to provide a pod including the aforementioned support arm, and yet another objective is to provide an aircraft including the aforementioned pod.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A support arm, comprising:

[0009] A first connecting end is provided with a rotary driving device, and the driving end of the rotary driving device is used to connect with an optical tool.

[0010] The second connecting end is provided with a support shaft coaxial with the axis of the driving end. One end of the support shaft is used to connect to the side of the optical instrument away from the driving end, and the other end of the support shaft can be moved along its axial direction and connected to the second connecting end. The rotary driving device is used to drive the optical instrument to rotate around the axis of the support shaft.

[0011] In some embodiments, the support arm is a U-shaped arm, one branch end of the support arm is the first connecting end, and the other branch end is the second connecting end. The second connecting end includes a fixed support arm and a movable connecting part. The movable connecting part is detachably connected to the fixed support arm, and one end of the support shaft is axially movable and connected to the movable connecting part.

[0012] In some embodiments, the movable connection includes a connecting plate and a housing, one end of the connecting plate is connected to the outer periphery of the housing, and the other end is detachably connected to the fixed support arm, and one end of the support shaft is axially movable and connected to the housing.

[0013] In some embodiments, the fixed support arm has a connecting cavity, and the connecting plate is used to be inserted into the connecting cavity.

[0014] In some embodiments, one end of the support shaft is provided with a connecting plate, which is used to connect to the optical tool via a first fastener, and the housing is provided with a clearance hole for the first fastener to pass through.

[0015] In some embodiments, a limiting portion is provided on the side of the connecting disk facing into the housing and between the connecting disk and the housing, the limiting portion being used to limit the rotation angle of the connecting disk.

[0016] In some embodiments, a bearing support is provided inside the housing, a bearing is provided inside the bearing support, and one end of the support shaft passes through the bearing.

[0017] In some embodiments, the drive end is provided with a mounting boss, which is used to mate with the mounting hole on the side of the optical tool.

[0018] A pod includes a support arm as described in any of the preceding claims, and also includes an optical element, one side of which is connected to the drive end of the rotary drive device, and the other side of which is connected to the support shaft.

[0019] An aircraft includes the aforementioned pod and a fuselage, the pod being mounted on the bottom of the fuselage.

[0020] Compared with existing technologies, the above technical solution has the following advantages:

[0021] This utility model provides a support arm comprising: a first connecting end and a second connecting end. The first connecting end is equipped with a rotary drive device, the drive end of which is used to connect with an optical tool. The second connecting end is equipped with a support shaft coaxial with the axis of the drive end. One end of the support shaft is used to connect to the side of the optical tool away from the drive end, and the other end of the support shaft is movable along its axial direction and connected to the second connecting end. The rotary drive device can drive the optical tool to rotate around the axis of the support shaft. During installation, one side of the optical tool is first fixed to the drive end of the rotary drive device. Then, the axial position of the support shaft is adjusted to accommodate the machining deviation of the optical tool in the axial direction of the drive end. After adjusting until the support shaft contacts the optical tool, the support shaft and the optical tool are then fixed. Compared to existing support arms where the connection positions for connecting the optical tool on the two connecting ends are relatively fixed in the axial direction, this application, through the movable support shaft, can effectively relax the machining tolerances of the optical tool, the drive end, and the support shaft in the axial direction, thus reducing machining costs and improving assembly quality.

[0022] The pod provided by this utility model has corresponding advantages because it includes the aforementioned support arm.

[0023] The aircraft provided by this utility model has corresponding advantages because it includes the aforementioned pod. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 A schematic diagram of the structure of a pod provided for a specific embodiment of this utility model;

[0026] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure in the middle;

[0027] Figure 3 for Figure 1 A three-dimensional structural diagram of the support arm from one perspective;

[0028] Figure 4 for Figure 1 A three-dimensional structural diagram of the support arm from another perspective;

[0029] Figure 5 for Figure 3 A cross-sectional view of the support arm in the middle;

[0030] Figure 6 for Figure 3 A schematic diagram of the partial explosion structure of the support arm in the diagram;

[0031] Figure 7 This is a schematic diagram of the interior of the housing at the second connection end;

[0032] Figure 8 This is a schematic diagram of the connecting disk structure;

[0033] Figure 9 A schematic diagram of the inner structure of the movable connecting part;

[0034] Figure 10 This is a schematic diagram of the outer structure of the movable connecting part.

[0035] The attached figures are labeled as follows:

[0036] 100 - Shock absorption device;

[0037] 200-directional motor;

[0038] 300-Load-bearing boom;

[0039] 400-roll motor;

[0040] 500-Support Arm;

[0041] 510-First connecting end, 511-Rotary drive device, 512-Drive end, 513-Mounting boss, 514-Positioning pin;

[0042] 520-Second connecting end, 521-Support shaft, 522-Connecting disc, 5221-Limiting block, 523-First fastener, 524-Partition plate, 5241-Bearing support, 5242-Stop block, 5243-Allowing hole, 525-Bearing, 526-Magnetic ring, 527-Pitch encoder PCB, 528-Fixed support arm, 5281-Connecting cavity, 529-Movable connecting part, 5291-Housing, 5292-Connecting plate;

[0043] 600-Lighting tools. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0045] Please refer to Figures 1 to 10The present invention provides a support arm 500 comprising: a first connecting end 510 and a second connecting end 520. The first connecting end 510 is provided with a rotary drive device 511, which includes a fixed end and a drive end 512. The fixed end is disposed on the first connecting end 510, and the drive end 512 is used to connect with an optical fixture 600. For example, the rotary drive device 511 may be a motor, with the motor's output shaft serving as the drive end 512, and the motor's output end connected to the optical fixture 600. The second connecting end 520 is provided with a support shaft 521 coaxial with the axis of the drive end 512. One end of the support shaft 521 is used to connect with... The optical tool 600 is connected to a second connecting end 520 on the side away from the drive end 512. The other end of the support shaft 521 can be moved along its axial direction. During installation, one side of the optical tool 600 is first fixed to the drive end 512 of the rotary drive device 511. Then, the axial position of the support shaft 521 is adjusted to accommodate the machining deviation of the optical tool 600 in the axial direction of the drive end 512. After the support shaft 521 contacts the optical tool 600, the support shaft 521 and the optical tool 600 are fixed. The rotary drive device 511 can drive the optical tool 600 to rotate around the axis of the support shaft 521. Compared with the existing support arm 500 where the connection positions of the two connecting ends for connecting the optical tool 600 are relatively fixed in the axial direction, the support arm 500 provided by this utility model can effectively relax the machining tolerances of the optical tool 600, the drive end 512, and the support shaft 521 in the axial direction through the movable support shaft 521. Therefore, it can reduce the machining cost and improve the assembly quality.

[0046] In some embodiments, such as Figure 3 and Figure 4 As shown, the support arm 500 is a U-shaped arm, meaning it includes two branch ends. One branch end is the first connecting end 510, and the other branch end is the second connecting end 520. Figure 6As shown, the second connecting end 520 includes a fixed support arm 528 and a movable connecting part 529. The fixed support arm 528 and the movable connecting part 529 are separate structures, wherein the movable connecting part 529 is detachably connected to the fixed support arm 528, and one end of the support shaft 521 is axially movable and connected to the movable connecting part 529. During assembly, one side of the optical instrument 600 is first fixed to the drive end 512 of the rotary drive device 511, and then the movable connecting part 529 is placed on the fixed support arm 528, wherein priority is given to ensuring the axial connection position between the support shaft 521 and the optical instrument 600. Then the support shaft 521 and the optical instrument 600 are fixed, and finally the movable connecting part 529 is fixed to the fixed support arm 528. Since the movable connecting part 529 can be detachably connected to the fixed support arm 528, it is possible to finely adjust the position of the movable connecting part 529 relative to the fixed support arm 528, that is, adjust the radial position of the support arm 500. Combined with the adjustable axial and radial positions of the support arm 500, the coaxiality of the support arm 500 and the drive end 512 of the rotary drive device 511 can be effectively guaranteed, thereby ensuring the rotational accuracy and stability of the optical tool 600.

[0047] In some embodiments, such as Figure 6 As shown, the movable connecting part 529 includes a connecting plate 5292 and a housing 5291. The housing 5291 can be a cylindrical structure. One end of the connecting plate 5292 is connected to the outer periphery of the housing 5291. The connecting plate 5292 and the housing 5291 can be an integral structure or a separate structure. The other end of the connecting plate 5292 is detachably connected to the fixed support arm 528, for example, by screws. Multiple screws can be used to ensure connection stability. The connecting plate 5292 facilitates the connection between the movable connecting part 529 and the fixed support arm 528, making assembly easier. One end of the support shaft 521 is axially movable and connected inside the housing 5291, and the support shaft 521 can rotate relative to the housing 5291.

[0048] In some embodiments, such as Figure 6As shown, the fixed support arm 528 has a connecting cavity 5281, and the connecting plate 5292 is used to insert into the connecting cavity 5281. For example, the inner cavity of the fixed support arm 528 is a hollow structure, and the side wall of the connecting cavity 5281 has a connecting hole. During assembly, the connecting plate 5292 can be inserted into the connecting cavity 5281 from the opening of the connecting cavity 5281. The connecting cavity 5281 can be used to position the connecting plate 5292. After the connecting plate 5292 is inserted into the connecting cavity 5281, it is not necessary to fix the connecting plate 5292 first. The axial and radial positions of the support shaft 521 can be adjusted first. The radial position can be adjusted by adjusting the position of the connecting plate 5292 extending into the connecting cavity 5281. After the position of the support shaft 521 is determined, the support shaft 521 and the optical fixture 600 are fixed, and then the connecting plate 5292 is fixed in the connecting cavity 5281, for example, by screws.

[0049] In some embodiments, to facilitate the fixing of the support shaft 521 and the optical fixture 600, such as Figure 2 , Figure 3 and Figure 5 As shown, one end of the support shaft 521 is provided with a connecting plate 522. The connecting plate 522 is coaxially arranged with the support shaft 521. The connecting plate 522 can be integrally formed with the support shaft 521. The connecting plate 522 is used to connect to the optical fixture 600 through a first fastener 523. For example, the connecting plate 522 and the optical fixture 600 are respectively provided with connecting holes. Specifically, multiple connecting holes can be provided on the connecting plate 522 evenly distributed along the circumferential direction. In order to facilitate the connection of the first fastener 523, such as... Figure 9 and Figure 10 As shown, the housing 5291 is provided with a clearance hole 5243 for the first fastener 523 to pass through. For example, during assembly, one side of the connecting plate 522 contacts the outer surface of one side of the optical fixture 600, and after the connecting plate 522 and the connecting hole on the optical fixture 600 are aligned, the first fastener 523 passes through the clearance hole 5243 and then passes through the connecting plate 522 and the connecting hole on the optical fixture 600.

[0050] In some embodiments, such as Figure 8 and Figure 9As shown, a limiting part is provided between the side of the connecting plate 522 facing the inside of the housing 5291 and the housing 5291. The limiting part is used to limit the rotation angle of the connecting plate 522. The limiting part includes a limiting protrusion and a limiting groove, or two limiting protrusions. For example, a limiting block 5221 is provided on the side of the connecting plate 522 facing the inside of the housing 5291, and an arc-shaped limiting groove is provided inside the housing 5291. The arc length of the arc-shaped limiting groove is greater than the extension length of the limiting block 5221 in the rotation direction. The limiting block 5221 is located in the arc-shaped limiting groove. When the connecting plate 522 rotates relative to the housing 5291 until the limiting block 5221 contacts the end of the arc-shaped limiting groove, the arc-shaped limiting groove... The rotation angle of the connecting plate 522 will be blocked, thereby limiting the rotation angle of the optical instrument 600; or a limiting block 5221 is provided on the side of the connecting plate 522 facing the inside of the housing 5291, and a stop block 5242 is provided inside the housing 5291. The stop block 5242 inside the housing 5291 can be an arc-shaped stop block 5242 extending in the circumferential direction. The stop block 5242 inside the housing 5291 is located on the rotation circle of the limiting block 5221 on the connecting plate 522. When the connecting plate 522 rotates relative to the housing 5291 until the limiting block 5221 contacts the stop block 5242, it will block the rotation of the connecting plate 522, thereby limiting the rotation angle of the optical instrument 600.

[0051] In some embodiments, such as Figure 5 and Figure 9 As shown, a bearing support 5241 is provided inside the housing 5291. For example, the housing 5291 has a partition 524 that divides its internal cavity into two chambers. The bearing support 5241 is located in the middle of the partition 524, and a bearing 525 is provided inside the bearing support 5241. The bearing 525 is axially confined within the bearing support 5241 by a bearing clamp. One end of the support shaft 521 passes through the bearing 525. The support shaft 521 and the bearing 525 are in a clearance fit relationship to facilitate axial movement of the support shaft 521 relative to the bearing 525. The bearing 525 effectively improves the rotational smoothness of the support shaft 521. Figure 5 and Figure 7 As shown, a pitch encoder PCB 527 is installed in the cavity of the partition 524 on the side away from the optical fixture 600. The pitch encoder PCB 527 is mounted on the end face of the bearing block away from the bearing 525. The magnetic ring 526 is fixed on the support shaft 521 at the end away from the connecting plate 522. The pitch encoder PCB 527 can detect the rotation angle of the support shaft 521, thereby facilitating the control of the pitch angle of the optical fixture 600. The support shaft 521 has a central hole. The cable of the rotary drive device 511 can pass through the optical fixture 600 chamber and the central hole in sequence to connect with the pitch encoder PCB 527, without having to pass through the U-shaped channel of the U-shaped arm, thus reducing the cable length.

[0052] In some embodiments, such as Figure 4 As shown, the drive end 512 is provided with a mounting boss 513. For example, a circular mounting boss 513 is provided in the middle of the side of the drive end 512 facing the optical tool 600. The side of the optical tool 600 is provided with a mounting hole. The mounting boss 513 is used to cooperate with the mounting hole to limit the radial position of the optical tool 600. Furthermore, a positioning pin 514 eccentric to the mounting boss 513 can be provided on the side of the drive end 512 facing the optical tool 600. The side wall of the optical tool 600 is also provided with a corresponding positioning hole. By inserting the positioning pin 514 into the positioning hole, the optical tool 600 can be limited in the circumferential direction to prevent the optical tool 600 from rotating relative to the drive end 512. To facilitate the connection between the optical instrument 600 and the drive end 512, the outer periphery of the drive end 512 is provided with a flange. The side wall of the optical instrument 600 can be connected to the flange of the drive end 512 by screws. Multiple screws distributed in the circumferential direction can be provided for fastening. During installation, the screws can be passed from the inside of the optical instrument 600 outwards, and one end of the screw protruding from the optical instrument 600 is connected to the flange of the drive end 512.

[0053] This utility model embodiment also provides a pod, including the support arm 500 provided in any of the above embodiments, and also includes an optical element 600. One side of the optical element 600 is connected to the drive end 512 of the rotary drive device 511, and the other side is connected to the support shaft 521. Regarding the beneficial effects of the pod, please refer to the support arm 500 provided in the above embodiments; further details will not be repeated here. Additionally, as... Figure 1 As shown, the pod also includes a shock absorber 100, an azimuth motor 200, a support arm 300, and a roll motor 400. The azimuth motor 200 is connected to the shock absorber 100, which is connected to the bottom of the aircraft fuselage. The upper end of the support arm 300 is connected to the mover of the azimuth motor 200, the roll motor 400 is connected to the lower end of the support arm 300, and the support arm 500 is connected to the mover of the roll motor 400. The azimuth motor 200 can drive the support arm 300 to rotate in the horizontal plane, the roll motor 400 can drive the support arm 500 to swing left and right, and the rotation drive device 511 can drive the optical actuator 600 to pitch forward and backward. The support arm 300 can be a bent structure or a curved structure, for example... Figure 1 As shown, the lower end of the support arm 300 extends backward relative to its upper end, and the middle part of the support arm 500 is connected to the lower end of the support arm 300 through the roll motor 400. The rotation axis of the support arm 500 is inclined downward. The optical instrument 600 is located between the two branch ends of the support arm 500 and is located directly below the orientation motor 200.

[0054] This utility model embodiment also provides an aircraft, including the pod provided in the above embodiment, and a fuselage. The pod is installed at the bottom of the fuselage and can be detachably connected to the bottom of the fuselage. The aircraft can be a drone. Regarding the beneficial effects of the aircraft, please refer to the support arm 500 provided in the above embodiment; it will not be repeated here.

[0055] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0056] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0057] The above provides a detailed description of the support arm, pod, and aircraft provided by this utility model. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are merely for the purpose of helping to understand the core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A support arm, characterized in that, include: The first connecting end (510) is provided with a rotary driving device (511), and the driving end (512) of the rotary driving device (511) is used to connect with the optical tool (600). The second connecting end (520) is provided with a support shaft (521) coaxial with the axis of the driving end (512). One end of the support shaft (521) is used to connect to the side of the optical instrument (600) away from the driving end (512). The other end of the support shaft (521) can be moved along its axial direction and connected to the second connecting end (520). The rotary driving device (511) is used to drive the optical instrument (600) to rotate around the axis of the support shaft (521).

2. The support arm according to claim 1, characterized in that, The support arm is a U-shaped arm. One branch end of the support arm is the first connecting end (510), and the other branch end is the second connecting end (520). The second connecting end (520) includes a fixed support arm (528) and a movable connecting part (529). The movable connecting part (529) is detachably connected to the fixed support arm (528), and one end of the support shaft (521) is axially movable and connected to the movable connecting part (529).

3. The support arm according to claim 2, characterized in that, The movable connecting part (529) includes a connecting plate (5292) and a housing (5291). One end of the connecting plate (5292) is connected to the outer periphery of the housing (5291), and the other end is detachably connected to the fixed support arm (528). One end of the support shaft (521) is axially movable and connected to the housing (5291).

4. The support arm according to claim 3, characterized in that, The fixed support arm (528) is provided with a connecting cavity (5281), and the connecting plate (5292) is used to be inserted into the connecting cavity (5281).

5. The support arm according to claim 3, characterized in that, One end of the support shaft (521) is provided with a connecting plate (522), which is used to connect with the optical tool (600) via a first fastener (523). The housing (5291) is provided with a clearance hole (5243) for the first fastener (523) to pass through.

6. The support arm according to claim 5, characterized in that, A limiting part is provided on the side of the connecting plate (522) facing the inside of the housing (5291) and between the housing (5291), the limiting part is used to limit the rotation angle of the connecting plate (522).

7. The support arm according to claim 3, characterized in that, The housing (5291) is provided with a bearing support (5241), and the bearing support (5241) is provided with a bearing (525). One end of the support shaft (521) passes through the bearing (525).

8. The support arm according to any one of claims 1 to 7, characterized in that, The drive end (512) is provided with a mounting boss (513), which is used to cooperate with the mounting hole on the side of the optical tool (600).

9. A pod, characterized in that, The support arm includes any one of claims 1 to 8, and also includes an optical instrument (600), one side of which is connected to the drive end (512) of the rotary drive device (511), and the other side is connected to the support shaft (521).

10. An aircraft, characterized in that, The system includes the pod as described in claim 9, and also includes a fuselage, wherein the pod is mounted on the bottom of the fuselage.

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