A drone tray slide rail device

Abstract

The utility model relates to a tray slide rail device of unmanned plane belongs to unmanned plane body structure field, including slide rail roof beam and a plurality of nylon cylinder, the slide rail roof beam is the groove shape roof beam along the heading setting, its through joint is fixed in the partition frame in the cabin of freight unmanned plane fuselage, the web outside of slide rail roof beam is equipped with a plurality of installation structure for installing nylon cylinder along the length direction, the nylon cylinder is rotatably installed on the installation structure through bolt assembly, and the partial structure of nylon cylinder protrudes to the web inside through the opening on the web, so that the side of tray can roll with nylon cylinder when moving in the cabin. The utility model converts the sliding friction between tray and slide rail into rolling friction under the premise of not influencing the guiding and spacing function, thereby avoiding the jam, reducing the abrasion, improving the smoothness and use efficiency of tray propulsion.

Description

Technical Field

[0001] This utility model belongs to the field of unmanned aerial vehicle (UAV) body structure, specifically relating to a UAV tray slide rail device. Background Technology

[0002] Currently, cargo drones often employ palletized transport to improve loading and unloading efficiency. In existing technologies, rollers 2 are typically arranged on the floor frame inside the fuselage, and a pallet 1 slides on them. To prevent the pallet 1 from swaying left and right during propulsion, grooved guide beams are often installed on the left and right sides of the cabin, with the pallet's sides engaging the grooves for guidance and vertical positioning.

[0003] However, this structure has a significant drawback: a millimeter-level gap needs to be maintained between the pallet and the inner side of the trough beam web. During actual propulsion, the pallet is prone to repeated sliding friction with the web, leading to frequent jamming and requiring repeated adjustments to the pallet's orientation to ensure smooth entry into the hold. This not only reduces transportation efficiency but also increases operational complexity and the risk of wear.

[0004] Therefore, there is an urgent need for a slide rail device that can effectively guide and limit movement while significantly reducing frictional resistance, so as to improve the smoothness and reliability of pallet propulsion. Summary of the Invention

[0005] The technical problem to be solved:

[0006] To overcome the shortcomings of existing technologies, this invention provides a drone pallet slide rail device. A nylon roller is installed on the outer side of the web of a channel beam, allowing the pallet to contact the roller when slightly offset, creating rolling friction. This significantly reduces frictional resistance, prevents jamming, and improves the smoothness of pallet movement. This invention converts the sliding friction between the pallet and the slide rail into rolling friction without affecting the guiding and limiting functions, thereby preventing jamming, reducing wear, and improving the smoothness and efficiency of pallet movement.

[0007] The technical solution of this utility model is: a drone tray slide rail device, including a slide rail beam 31 and multiple nylon rollers 32;

[0008] The slide rail beam 31 is a channel beam arranged along the flight direction, which is fixed to the bulkhead 4 inside the cargo drone fuselage through the joint 5; the outer side of the web plate 311 of the slide rail beam 31 is provided with multiple mounting structures for installing nylon rollers 32 along the length direction.

[0009] The nylon roller 32 is rotatably mounted on the mounting structure via bolt assembly 33, and part of the structure of the nylon roller 32 protrudes into the inside of the web plate 311 through the opening, so that the side of the pallet 1 can roll and rub against the nylon roller 32 when it moves in the cabin.

[0010] A further technical solution of this utility model is: the slide rail beam 31 adopts an asymmetrical groove-shaped cross-section structure with a wide upper edge and a narrow lower edge, and the upper edge strip 312 is used to vertically limit the position of the tray 1.

[0011] A further technical solution of this utility model is: the mounting structure is a box-shaped structure protruding from the outer side of the web of the slide rail beam 31. The box-shaped structure is a cavity with openings at both ends for accommodating the nylon roller 32; one end of the opening is an opening on the web 311, and the other end of the opening serves as the mounting port for the nylon roller 32.

[0012] A further technical solution of this utility model is: the box-shaped structure is a reinforced structure with an opening in the web 311.

[0013] A further technical solution of this utility model is: the nylon roller 32 is a stepped shaft structure made of nylon material, with a large-diameter rolling part in the middle and small-diameter mounting journals at both ends.

[0014] A further technical solution of this utility model is: the bolt assembly 33 includes a bolt 331, a self-locking nut 334, and a washer; the bolt 331 is inserted into the box-shaped structure from the top, passes through a first washer 332, a nylon roller 32, and another first washer 332 in sequence, and then exits from the bottom of the box-shaped structure, and is tightened by the second washer 333 and the self-locking nut 334, thereby rotatably fixing the nylon roller 32 to the slide rail beam 31.

[0015] A further technical solution of this utility model is: the first washer 332 is a metal washer, which is disposed between the mounting journal of the nylon roller 32 and the inner wall of the box-shaped structure of the slide rail beam 31.

[0016] A further technical solution of this utility model is: the upper edge strip 312 and web plate 311 of the slide rail beam 31 are connected to the machine body frame 4 through a detachable joint 5. The joint 5 is a transition connector and is fixed to the connected part by bolts.

[0017] A further technical solution of this utility model is: the lower edge strip 313 of the slide rail beam 31 does not overlap with the tray 1 in the Y direction and does not provide a lower limit.

[0018] A cargo drone, wherein at least one pair of drone tray slide rail devices are symmetrically installed on the left and right sides of its fuselage.

[0019] Beneficial effects

[0020] The beneficial effects of this utility model are as follows: This utility model provides a drone pallet slide rail device for cargo drone pallet transportation. It acts as a guide rail, allowing the pallet to smoothly enter the cabin along the flight path, preventing jamming, improving pallet transportation efficiency. It has a simple structure, good wear resistance, and is easy and quick to assemble and disassemble. Specific advantages are analyzed below:

[0021] 1. This utility model transforms the sliding friction between the pallet and the web of the channel beam in the prior art into rolling friction by setting a rotatable nylon roller on the slide rail beam. This greatly reduces frictional resistance and fundamentally solves the problem of pallet jamming caused by friction and deviation during the advancement process, ensuring that the pallet can smoothly and reliably enter the designated position in the cabin.

[0022] 2. The arrangement of the rollers in this invention provides flexible lateral guidance for the pallet. When the pallet deviates slightly, it can immediately contact the rollers and obtain a smooth corrective force, guiding it back to the correct path. This avoids the left-right swaying caused by gaps in traditional rigid guide structures, improving the stability and positioning accuracy of the transportation process.

[0023] 3. This utility model adopts an asymmetrical groove-shaped cross-section design with a wide upper edge and a narrow lower edge. The wide upper edge can effectively suppress the upward movement of the pallet caused by vibration or inertia during flight, providing reliable vertical restraint; the narrow lower edge avoids unnecessary contact with the pallet, simplifies the structure, and reduces weight.

[0024] 4. This utility model adopts a modular design for the entire device. The connection between the slide rail beam and the fuselage, and the connection between the roller and the slide rail beam, all use standard bolt assemblies, supporting quick assembly and disassembly. When a single roller wears out, it can be replaced directly without replacing the entire slide rail beam. This results in low maintenance costs, simple and quick operation, and improved attendance rate and operational economy of cargo drones. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the installation of a drone tray slide rail device in an embodiment of the present utility model;

[0026] Figure 2 This is a schematic diagram of the structure of a drone tray slide rail device in an embodiment of the present utility model;

[0027] Figure 3 The length direction portion of the three-view diagram of a drone tray slide rail device in this embodiment of the present invention is not shown.

[0028] Figure 4 This is a schematic diagram of the nylon roller structure in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the tray installation in an embodiment of the present utility model;

[0030] Explanation of reference numerals in the attached drawings: 1. Tray; 2. Roller; 3. UAV tray slide rail device; 31. Slide rail beam; 311. Web plate; 312. Upper edge strip; 313. Lower edge strip; 314. Box-shaped structure; 32. Nylon roller; 33. Bolt assembly; 331. Bolt; 332. First washer; 333. Second washer; 334. Self-locking nut; 4. Spacer frame; 5. Joint. Detailed Implementation

[0031] The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are 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 are not intended to 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.

[0033] To ensure smooth pallet sliding, millimeter-level gaps are maintained between the left and right sides of the pallet and the inner side of the web of the channel beam. This causes the pallet to rub against the inner side of the channel beam multiple times during transport, leading to jamming and requiring repeated adjustments to the pallet's orientation to ensure its movement into the cabin. This invention proposes a UAV pallet slide rail device, including a slide rail beam 31 and multiple nylon rollers 32. The slide rail beam 31 is a channel beam arranged along the flight direction and is fixed to the bulkhead 4 inside the cargo UAV's fuselage via a connector 5. Multiple mounting structures for installing the nylon rollers 32 are provided along the length of the outer side of the web 311 of the slide rail beam 31. The nylon rollers 32 are rotatably mounted on the mounting structures via bolt assemblies 33, and a portion of the nylon roller 32 protrudes into the web through an opening, allowing the pallet 1's side to roll and rub against the nylon rollers 32 as it moves within the cabin.

[0034] In one embodiment, the slide rail beam 31 adopts an asymmetrical groove-shaped cross-section structure with a wide upper edge and a narrow lower edge, and the upper edge strip 312 is used to vertically limit the position of the pallet 1.

[0035] In one embodiment, the mounting structure is a box-shaped structure protruding from the outer side of the web of the slide rail beam 31. The box-shaped structure is a cavity with openings at both ends for accommodating the nylon roller 32. One end of the opening is an opening on the web 311, and the other end of the opening serves as the mounting port for the nylon roller 32.

[0036] In one embodiment, the box-shaped structure is a reinforced structure with an opening in the web 311.

[0037] In one embodiment, the nylon roller 32 is a stepped shaft structure made of nylon material, with a large-diameter rolling part in the middle and small-diameter mounting journals at both ends.

[0038] In one embodiment, the bolt assembly 33 includes a bolt 331, a self-locking nut 334, and a washer; the bolt 331 is inserted into the box-shaped structure from the top, passes through a first washer 332, a nylon roller 32, and another first washer 332 in sequence, and then exits from the bottom of the box-shaped structure, and is tightened by the second washer 333 and the self-locking nut 334, thereby rotatably fixing the nylon roller 32 to the slide rail beam 31.

[0039] In one embodiment, the first washer 332 is a metal washer, disposed between the mounting journal of the nylon roller 32 and the inner wall of the box-shaped structure of the slide rail beam 31.

[0040] In one embodiment, the upper edge strip 312 and web plate 311 of the slide rail beam 31 are connected to the body frame 4 via a detachable joint 5. The joint 5 is a transition connector (a connection structure between conventional structural components in the prior art), which is fixed to the connected component by bolts.

[0041] In one embodiment, the lower edge strip 313 of the slide rail beam 31 does not overlap with the tray 1 in the Y direction and does not provide a lower limit.

[0042] This utility model also proposes a cargo drone, wherein at least one pair of the aforementioned drone tray slide rail devices are symmetrically installed on the left and right sides of the fuselage.

[0043] The above technical solution will be further explained below with reference to the accompanying drawings:

[0044] In one embodiment, refer to Figure 1 As shown, a right-handed coordinate system is used, with the reverse heading as the positive X-axis and the Z-axis pointing vertically upwards. A UAV pallet slide rail device 3 is installed on the left and right sides of the cargo UAV fuselage, and is fixed to the partition frame 4 at each partition frame 4 via a connector 5.

[0045] Reference Figure 2 As shown, a drone tray slide rail device 2 consists of a slide rail beam 31, a nylon roller 3, and a bolt assembly 4.

[0046] Reference Figure 3 As shown, the slide rail beam 31 adopts an integral machined aluminum alloy beam structure with a channel-shaped cross section that is wider at the top and narrower at the bottom. Multiple protruding box-shaped structures are arranged on the outer side of the beam web for installing nylon rollers 32.

[0047] Reference Figure 4As shown, the nylon roller 32 adopts a cylindrical structure with a large middle section and small ends. The large middle cylinder passes through the web of the slide rail beam 31, forming a rectangular opening on the web. The box-shaped structure is also equivalent to a reinforcing structure for the opening of the web.

[0048] Reference Figure 5 As shown, the nylon roller 32 is fixed to the box-shaped structure of the slide rail beam 31 by bolt assembly 33. The bolt assembly 33 is a detachable connection and includes bolt 331, two first washers 332, a second washer 332 and a self-locking nut 334. The first washers 332 are steel washers and are installed between the small cylinders at both ends of the nylon roller 32 and the box-shaped structure of the aluminum alloy slide rail beam 31 to prevent wear.

[0049] Reference Figure 1 As shown, a drone pallet slide rail device 3 is connected to the upper edge strip and web of the slide rail beam 31 at each partition frame via a joint, using a detachable bolt, self-locking nut, and washer assembly. During installation, the nylon roller 32 is first installed on the slide rail beam 31 via bolt assembly 33 to form a drone pallet slide rail device 3, then each joint is fixed to the partition frame, and finally the drone pallet slide rail device 3 is installed.

[0050] Reference Figure 5 As shown, the installation relationship between a drone pallet slide rail device 3 and the pallet 1 is as follows: A small gap is reserved between the left and right ends of the pallet and the inner side of the web of the slide rail beam 31 along the Y direction. When the pallet is transported into the cabin, if it deviates to the left, it will experience rolling friction with the nylon roller 32 on the left side; the same applies if it deviates to the right. The nylon roller 32 facilitates its smooth movement into the cabin. The upper edge of the slide rail beam 31 is wider and blocks above the pallet, leaving a small gap along the Z direction. This gap ensures smooth transport of the pallet into the cabin, and the wider upper edge prevents the pallet from shifting upwards during flight, serving as an upper limit. Since double rows of rollers are already arranged on the floor frame... Figure 1 The structure allows the pallet to be placed horizontally on top of it, and the gap between the left and right sides of the pallet and the inner side of the web of the slide rail beam 31 is extremely small, so the pallet will not sink further. Therefore, the lower edge of the slide rail beam 31 is designed to be narrow and does not overlap with the pallet in the Y direction, so there is no need for a lower limit.

[0051] In one embodiment, the pallet loading and transportation process is as follows:

[0052] Loading goods: Secure the goods to the pallet.

[0053] Propulsion Pallet: The pallet is pushed into the cabin along the fuselage X-axis (counter-clockwise) using external equipment. The bottom of the pallet is supported by double rows of rollers on the floor frame, providing the main load-bearing capacity and rolling friction.

[0054] Guiding and Anti-jamming: During the advancement process, if the pallet experiences a slight deviation (Y direction) due to uneven force, its side will contact the nylon roller 32 protruding from the inner side of the web of the slide rail beam 31. After contact, sliding friction becomes rolling friction, the nylon roller 32 rotates, guiding the pallet smoothly back to its position and effectively preventing jamming.

[0055] Flight limiting: During flight, when encountering turbulence, the upper edge of the wide slide rail beam 31, located above the pallet, prevents the pallet from moving upwards (Z-axis), providing a reliable vertical limiting function. The pallet is supported by floor rollers underneath and flexibly limited on both sides by nylon rollers, ensuring the overall stability of the cargo during flight.

[0056] Steps for disassembling a drone tray slide rail device 3:

[0057] Disconnect the connection to the four joints 5 of each partition frame;

[0058] Remove a drone tray slide rail device 3;

[0059] Remove the nylon roller 32.

[0060] Restore the above steps:

[0061] Install nylon roller 32;

[0062] Install 4 connectors at each partition frame;

[0063] Install a drone tray slide rail device 3.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention.

Claims

1. A drone tray slide rail device, characterized in that, Includes a slide rail beam (31) and multiple nylon rollers (32); The slide rail beam (31) is a channel beam set along the flight direction, which is fixed to the bulkhead (4) inside the cargo drone fuselage through the joint (5); the web plate (311) of the slide rail beam (31) has multiple mounting structures for installing nylon rollers (32) along the length direction on the outer side. The nylon roller (32) is rotatably mounted on the mounting structure via bolt assembly (33), and part of the structure of the nylon roller (32) protrudes into the inside of the web through the opening on the web plate (311), so that the side of the pallet (1) can roll and rub against the nylon roller (32) when it moves in the cabin.

2. The UAV tray slide rail device according to claim 1, characterized in that: The slide rail beam (31) adopts an asymmetrical groove cross-section structure with a wide upper edge and a narrow lower edge. The upper edge strip (312) is used to vertically limit the position of the pallet (1).

3. The UAV tray slide rail device according to claim 2, characterized in that: The mounting structure is a box-shaped structure protruding from the outer side of the web of the slide rail beam (31). The box-shaped structure is a cavity with openings at both ends for accommodating the nylon roller (32). One end of the opening is an opening on the web (311), and the other end of the opening serves as the mounting port for the nylon roller (32).

4. The UAV tray slide rail device according to claim 3, characterized in that: The box-shaped structure is a reinforced structure with an opening in the web (311).

5. The UAV tray slide rail device according to claim 2, characterized in that: The nylon roller (32) is a stepped shaft structure made of nylon material, with a large-diameter rolling part in the middle and small-diameter mounting journals at both ends.

6. The drone tray slide rail device according to claim 5, characterized in that: The bolt assembly (33) includes a bolt (331), a self-locking nut (334), and a washer; the bolt (331) is inserted into the box structure from the top, passes through a first washer (332), a nylon roller (32), and another first washer (332) in sequence, and then comes out from the bottom of the box structure. It is tightened by the second washer (333) and the self-locking nut (334) to rotatably fix the nylon roller (32) on the slide rail beam (31).

7. The drone tray slide rail device according to claim 6, characterized in that: The first washer (332) is a metal washer, which is disposed between the mounting journal of the nylon roller (32) and the inner wall of the box-shaped structure of the slide rail beam (31).

8. The UAV tray slide rail device according to claim 7, characterized in that: The upper edge strip (312) and web plate (311) of the slide rail beam (31) are connected to the body frame (4) through a detachable joint (5). The joint (5) is a transition connector and is fixed to the connected part with bolts.

9. The UAV tray slide rail device according to claim 8, characterized in that: The lower edge strip (313) of the slide rail beam (31) does not overlap with the tray (1) in the Y direction and does not provide a lower limit.

Images