Take-up device of mooring unmanned aerial vehicle

Abstract

The invention discloses a take-up device of a mooring unmanned aerial vehicle, and belongs to the technical field of unmanned aerial vehicle auxiliary equipment.The take-up device of the mooring unmanned aerial vehicle comprises a lead screw, a guide rod, a clamping block, a sliding block and a threading component, and a spirally-formed guide groove is formed in the peripheral face of the lead screw; the guide rod is parallel to the screw rod; the clamping block is provided with clamping teeth; the sliding block comprises an elastic piece and a block body. The block body is provided with a containing cavity, a first penetrating hole and a second penetrating hole. One end of the containing cavity is communicated with the first penetrating hole, the other end of the containing cavity is open, the lead screw penetrates through the first penetrating hole, the guide rod penetrates through the second penetrating hole, the clamping block is arranged in the containing cavity, the clamping tooth is provided with an arc-shaped section facing the lead screw, the arc-shaped section is arranged in the guide groove and is in sliding connection with the guide groove, and the elastic piece is connected with the block body. The elastic piece at least partially seals the opening of the containing cavity, and the clamping block is configured to be capable of abutting against or being separated from the elastic piece; the threading component is connected with the sliding block.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicle auxiliary equipment, and in particular to a line-reeling device for a tethered unmanned aerial vehicle. Background Art

[0002] Tethered drones are a branch of drone development. Their main purpose is to use ground power to continuously supply electricity to drones at high altitudes through cables, thereby enabling the drones to stay for a long time.

[0003] In the related art, the box at the ground end drives the threading component to move through a screw slider mechanism to assist in guiding and winding the cable, but the screw slider mechanism is prone to jamming or loosening and has poor durability. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a line-reeling device for a tethered drone, which reduces the risk of a connecting block and a lead screw becoming stuck or loose, thereby improving durability.

[0005] According to an embodiment of the present invention, the line-reeling device for a tethered drone includes: a screw rod, the outer peripheral surface of which is provided with a spirally arranged guide groove; a guide rod, which is arranged parallel to the screw rod; a clamping block, which has a clamping tooth; a slider, including a spring piece and a block, the block having a accommodating cavity, a first through-hole and a second through-hole; one end of the accommodating cavity is connected to the first through-hole, and the other end of the accommodating cavity is open, the screw rod is passed through the first through-hole, the guide rod is passed through the second through-hole, the clamping block is arranged in the accommodating cavity, the clamping tooth has an arc section arranged toward the screw rod, the arc section is arranged in the guide groove and is slidably connected to the guide groove, the spring piece is connected to the block, the spring piece at least partially closes the opening of the accommodating cavity, and the clamping block is configured to be able to abut or separate from the spring piece; a threading component is connected to the slider.

[0006] The tethered vehicle has a first end and a second end, and the guide rod is respectively provided with a first end and a second end, wherein the first end and the second end are respectively provided with a first end and a second end, wherein the first end and the second end are respectively provided with a first end and a second end, wherein the first end and the second end are respectively provided with a second end, wherein the first end and the second end are respectively provided with a second end, wherein the first end and the second end are respectively provided with a second end, wherein the first end and the second end are respectively provided with a second end, wherein the first end and the second end are respectively provided with a second end, wherein the first end and the second end are respectively provided with a second end, The cable of the tethered drone is guided, the spring sheet is connected to the block, and the spring sheet at least partially closes the opening of the accommodating cavity. When the clamping block is arranged in the accommodating cavity, the clamping block can be locked in the accommodating cavity by closing the opening of the accommodating cavity by the spring sheet, thereby avoiding the problem of the clamping block falling out of the accommodating cavity. The elasticity of the spring sheet itself is utilized to achieve the limitation of the clamping block while ensuring a certain degree of tightness adjustability between the clamping block and the screw rod, that is, the clamping block is allowed to have a certain degree of jump, thereby avoiding the problem of the clamping block and the screw rod being stuck or jammed. When the clamping block jumps, the clamping block can abut against the spring sheet, and the elastic force of the spring sheet drives the clamping block to reset, so that the clamping block abuts against the screw rod. That is, the setting of the spring sheet can more effectively limit the movement of the clamping block along the radial direction of the screw rod, so as to ensure the stable connection between the clamping block and the screw rod. That is, the line-reeling device of the tethered drone can reduce the risk of the clamping block and the screw rod being stuck or loosened, and improve durability.

[0007] According to some embodiments of the present invention, the elastic sheet has an abutting portion located on the central axis of the accommodating cavity, and the elastic sheet further has a third through hole arranged around the abutting portion.

[0008] According to some embodiments of the present invention, two third through-holes are provided, and the two third through-holes are arranged in a mirror image along the length direction of the abutting portion;

[0009] And / or, it also includes multiple threaded connectors, two or more mounting holes are provided on the spring piece, multiple screw holes are provided on the block, each mounting hole is opposite to at least one screw hole, each mounting hole is connected to a threaded connector, the threaded connector is passed through the mounting hole and is threadedly connected to the screw hole.

[0010] According to some embodiments of the present invention, a contraction section is provided at one end of the clamping block facing away from the clamping tooth, and the outer diameter of the contraction section gradually decreases toward the direction approaching the elastic sheet, and the contraction section can abut or separate from the abutment portion.

[0011] According to some embodiments of the present invention, the surface of the arc segment facing the bottom wall of the guide groove has a first inclined surface and a second inclined surface, and the first inclined surface and the second inclined surface tend to approach each other in a direction close to the bottom wall of the guide groove.

[0012] According to some embodiments of the present invention, the first inclined surface is connected to the second inclined surface and jointly defines a sliding line, and the sliding line can be slidingly connected to the bottom wall of the guide groove.

[0013] According to some embodiments of the present invention, two guide grooves are provided, the spiral directions of the two guide grooves are opposite and the two guide grooves are interconnected, and the engaging block is configured to be able to move between the two guide grooves.

[0014] According to some embodiments of the present invention, two side surfaces facing away from the engaging teeth are respectively provided with arc-shaped friction surfaces with smooth transitions, the curvature of the arc-shaped friction surface matches the curvature of the arc-shaped segment, one end of the arc-shaped friction surface is connected to the arc-shaped segment, and the arc-shaped friction surface is configured to abut against the side wall of the guide groove;

[0015] And / or, the thickness of the arc segment gradually narrows from the middle to both ends.

[0016] According to some embodiments of the present invention, the clamping block is made of chromium bearing steel;

[0017] And / or, the shrapnel is made of 65 manganese steel metal material;

[0018] And / or, the line-reeling device for the tethered drone further includes a ball bearing sleeve connected to the block, the outer circumference of the ball bearing sleeve is connected to the peripheral wall of the second perforation, and the inner circumference of the ball bearing sleeve is connected to the guide rod.

[0019] According to some embodiments of the present invention, the wire-reeling device of the tethered drone also includes a wire winding drum and a cable. The wire threading component includes two rollers. The outer peripheral surfaces of the rollers are provided with embedded grooves. The two rollers are respectively rotatably connected to the block. A wire threading cavity is constructed between the embedded grooves of the two rollers. The cable is passed through the wire threading cavity and connected to the wire winding drum.

[0020] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0022] Figure 1 This is a schematic structural diagram of a line-retrieving device for a tethered drone according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic structural diagram of a slider of a line-reeling device for a tethered drone according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic structural diagram of the coupling block, the lead screw and the spring piece of a line-reeling device for a tethered drone according to an embodiment of the present invention;

[0025] Figure 4 This is a structural diagram of the separation of the clamping block and the shrapnel of the take-up device for tethering a drone according to an embodiment of the present invention;

[0026] Figure 5 This is a structural schematic diagram of a clamping block of a line-reeling device for a tethered drone according to an embodiment of the present invention;

[0027] Figure 6 A cross-sectional view of a clamping block of a line-reeling device for a tethered drone according to an embodiment of the present invention, taken along a first direction;

[0028] Figure 7 for Figure 6 A partial enlarged view of the A portion of the clamping block of the take-up device for tethering a drone shown in FIG;

[0029] Figure 8 This is a cross-sectional view of a clamping block of a line-reeling device for a tethered drone according to an embodiment of the present invention, taken along a second direction.

[0030] Figure Number:

[0031] 100, screw rod; 110, guide groove;

[0032] 200, guide rod;

[0033] 300, clamping block; 310, clamping teeth; 311, arc segment; 3111, first inclined surface; 3112, second inclined surface; 3113, sliding line; 312, arc-shaped friction surface; 320, contraction segment;

[0034] 400, slider; 410, block; 411, accommodating cavity; 412, first through-hole; 413, second through-hole; 420, spring; 421, abutting portion; 422, third through-hole; 423, mounting hole; 424, connecting portion;

[0035] 500, roller; 510, groove;

[0036] 600, threaded connectors;

[0037] 700, ball bearing sleeve;

[0038] 800, threading cavity. DETAILED DESCRIPTION

[0039] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In the description of the present invention, "a plurality" refers to more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of the indicated technical features, or implicitly indicating the order of the indicated technical features.

[0042] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0043] Reference Figures 1 to 8 As shown, a line-retrieving device for a tethered drone according to an embodiment of the present invention includes: a screw rod 100, a guide rod 200, a clamping block 300, a slider 400, and a threading member. The following description will be made using the screw rod 100 as an example, wherein the length direction is the left-right direction.

[0044] Reference Figure 1 、 Figure 2 and Figure 3 As shown, specifically, the screw rod 100 and the guide rod 200 are parallel to each other, the outer peripheral surface of the screw rod 100 is provided with a spirally arranged guide groove 110, and the clamping block 300 is provided with a clamping tooth 310, which is arranged in a flat shape so that the clamping tooth 310 facing one end of the screw rod 100 can be embedded in the guide groove 110 and slidably connected with the guide groove 110.

[0045] Reference Figure 2 、 Figure 3 and Figure 4As shown, specifically, the slider 400 includes a spring piece 420 and a block 410, the block 410 has a receiving cavity 411, a first through-hole 412 and a second through-hole 413, the lower end of the receiving cavity 411 is connected to the first through-hole 412, the upper end of the receiving cavity 411 is open, the first through-hole 412 is located above the second through-hole 413, the screw rod 100 is passed through the first through-hole 412, the guide rod 200 is passed through the second screw rod 100, the clamping block 300 is provided in the receiving cavity 411, and the clamping tooth 310 has an arc segment 311 arranged toward the screw rod 100. The curvature of the arc segment 311 is adapted to the curvature of the bottom wall of the guide groove 110. The arc segment 311 is arranged in the guide groove 110 and is slidingly connected to the guide groove 110 to improve the accuracy of the movement of the clamping block 300. After the screw rod 100 rotates, the guide groove 110 and the clamping tooth 310 cooperate to drive the clamping block 300 and the slider 400 to move along the length direction of the screw rod 100. The second through hole 413 and the guide rod 200 are mutually limited, and the guide rod 200 can guide the sliding of the slider 400 to improve the straightness of the sliding of the slider 400.

[0046] Reference Figure 2 、 Figure 3 and Figure 4 As shown, the spring piece 420 is connected to the block 410, and the spring piece 420 at least partially closes the opening of the accommodating chamber 411. When the clamping block 300 is arranged in the accommodating chamber 411, the spring piece 420 closes the opening of the accommodating chamber 411, so that the clamping block 300 can be locked in the accommodating chamber 411, thereby avoiding the problem of the clamping block 300 falling out of the accommodating chamber 411. The elasticity of the spring piece 420 itself is used to limit the clamping block 300 while ensuring that there is a certain degree of adjustability between the clamping block 300 and the screw rod 100, that is, the clamping block 300 is allowed to have a certain amount of jumping, thereby avoiding the problem of the clamping block 300 and the screw rod 100 being stuck or jammed.

[0047] Reference Figure 2 、 Figure 3 and Figure 4 As shown, when the clamping block 300 bounces, the clamping block 300 can abut against the spring piece 420, and the elastic force of the spring piece 420 drives the clamping block 300 to reset, so that the clamping block 300 abuts against the screw rod 100, that is, the setting of the spring piece 420 can more effectively limit the movement of the clamping block 300 along the radial direction of the screw rod 100, so as to ensure the stable connection between the clamping block 300 and the screw rod 100, that is, the line-reeling device of the tethered drone can reduce the risk of the clamping block 300 and the screw rod 100 getting stuck or loose, and improve durability.

[0048] Reference Figure 2 、 Figure 3 and Figure 4As shown, the threading member is connected to the lower end of the slider 400. The threading member slides with the sliding of the slider 400, which can better guide the cable of the tethered drone so as to achieve more regular unwinding or rewinding of the cable.

[0049] Reference Figure 1 、 Figure 3 and Figure 4 As shown, it can be understood that the spring piece 420 has an abutment portion 421 located on the central axis of the accommodating chamber 411, and the spring piece 420 also has a third through-hole 422 arranged around the abutment portion 421. The arrangement of the third through-hole 422 can increase the deformability of the abutment portion 421 in the tethered drone take-up device. Since the abutment portion 421 is located on the central axis of the accommodating chamber 411, it is ensured that the abutment portion 421 can limit the clamping block 300. When the clamping block 300 generates radial runout along the screw rod 100, the clamping block 300 can abut against the abutment portion 421. Through the deformation and elastic tendency of the abutment portion 421, the clamping block 300 is reset and abuts against the screw rod 100. While avoiding the clamping block 300 and the screw rod 100 from getting stuck, it can ensure a stable sliding connection between the clamping block 300 and the screw rod 100.

[0050] Reference Figure 1 、 Figure 3 and Figure 4 As shown, specifically, two third through-holes 422 are provided, and the two third through-holes 422 are mirror-imaged along the length direction of the abutting portion 421, and the two third through-holes 422 are both provided around the abutting portion 421. Specifically, the elastic piece 420 includes a connecting portion 424 and an abutting portion 421. The connecting portion 424 is provided around the abutting portion 421. The connecting portion 424 is used to connect to the block 410. The two ends of the abutting portion 421 facing away from each other are respectively connected to the two ends of the connecting portion 424 to improve the connection stability of the abutting portion 421 and to avoid the problem of one end of the abutting portion 421 breaking from the connecting portion 424, which would cause the elastic piece 420 to fail. The third through-hole 422 is constructed between the inner edge of the connecting portion 424 and the outer edge of the abutting portion 421.

[0051] Reference Figure 1 、 Figure 3 and Figure 4 As shown, the third through-hole 422 is at least partially connected to the opening of the accommodating chamber 411, which can increase the deformable range of the abutting portion 421. Through the deformation of the abutting portion 421 relative to the connecting portion 424 and the elasticity of the abutting portion 421 itself, it can be ensured that there is a certain degree of tightness adjustment between the clamping block 300 and the screw rod 100, so as to reduce the risk of the clamping block 300 and the screw rod 100 getting stuck or loose, so as to improve the smoothness of the sliding of the clamping block 300 along the screw rod 100, and thus improve the durability of the line-reeling device of the tethered drone.

[0052] Reference Figure 1、 Figure 3 and Figure 4 As shown, it can be understood that, specifically, the spring piece 420 can be made of 65 manganese steel metal material. By utilizing the rigidity and elasticity of the 65 manganese steel metal, the clamping block 300 can be reliably restricted in the accommodating cavity 411, while at the same time ensuring that the clamping block 300 and the screw rod 100 have a certain degree of adjustable tightness.

[0053] Reference Figure 1 、 Figure 3 and Figure 4 As shown, in the related art, traditional line-reeling mechanisms generally use conventional compression springs to limit the movement of the crescent. The compression springs can only press the crescent against the screw 100, which can easily cause problems such as jamming or loosening between the crescent and the screw 100. The line-reeling device for a tethered drone provided in an embodiment of the present invention uses the structure and material selection of the spring clip 420 to give the spring clip 420 a large elastic coefficient, which can better limit the movement of the clamping block 300 along the radial direction of the screw 100 and improve the stability of the sliding connection between the screw 100 and the clamping block 300.

[0054] Reference Figure 1 、 Figure 3 and Figure 4 As shown, it can be understood that the line-reeling device of the tethered drone also includes two threaded connectors 600, and two mounting holes 423 are provided on the connecting portion 424 of the shrapnel 420. The two mounting holes 423 are respectively located on both sides of the abutting portion 421, and two screw holes are provided on the block 410. Each mounting hole 423 is opposite to a screw hole, and each mounting hole 423 is connected to a threaded connector 600.

[0055] Reference Figure 1 、 Figure 3 and Figure 4 As shown, when in use, the user can place the spring piece 420 above the accommodating cavity 411, so that the abutment portion 421 is located on the central axis of the accommodating cavity 411, and the mounting hole 423 is opposite to the screw hole one by one, and then the user can pass the threaded connector 600 through the mounting hole 423 and threadedly connect it to the screw hole, that is, the threaded connector 600 is used to realize the detachable connection between the spring piece 420 and the block 410, ensuring that the abutment portion 421 can limit the movement of the clamping block 300.

[0056] Reference Figure 1 、 Figure 3 and Figure 4 As shown, the line-reeling device of the tethered drone can conveniently connect the spring 420 and the block 410 through the threaded connector 600. Compared with other rigid connection structures or compression spring connection structures, it is beneficial to reduce the difficulty of the installation process of the clamping block 300 and the screw rod 100 and improve the assembly efficiency.

[0057] It should be understood that in some other embodiments, the tethered drone's wire-collecting device includes more than two threaded connectors 600, and more than two mounting holes 423 are provided on the shrapnel 420. Adaptively, more than two screw holes are provided on the block 410, and the mounting holes 423 correspond one-to-one to the screw holes, and the mounting holes 423 correspond one-to-one to the threaded connectors 600.

[0058] Reference Figure 1 、 Figure 4 and Figure 6 As shown, it can be understood that in this embodiment, a contraction section 320 is provided at one end of the clamping block 300 facing away from the clamping tooth 310 , and the outer diameter of the contraction section 320 gradually decreases toward the direction approaching the spring piece 420 , and the contraction section 320 can abut or separate from the abutment portion 421 .

[0059] Reference Figure 4 、 Figure 6 and Figure 8 As shown, the clamping block 300 is in a truncated cone shape at the contraction section 320, and the outer diameter of the contraction section 320 gradually decreases in the direction close to the spring piece 420, that is, the small head end of the contraction section 320 can abut or separate from the abutment portion 421 of the spring piece 420, and the outer diameter of the small head end of the contraction section 320 is smaller than the outer diameter of the abutment portion 421 to ensure that the abutment portion 421 can fully withstand the impact of the clamping block 300, thereby improving the limiting effect of the spring piece 420 on the clamping block 300, and utilizing the elasticity of the spring piece 420 itself to achieve the limit of the clamping block 300 while ensuring that the clamping block 300 and the wire There is a certain degree of adjustable tightness between the rods 100, that is, the clamping block 300 is allowed to produce a certain amount of jumping, thereby avoiding the problem of the clamping block 300 and the screw rod 100 being stuck or jammed. When the clamping block 300 jumps, the clamping block 300 can abut against the spring piece 420, and the elastic force of the spring piece 420 drives the clamping block 300 to reset, so that the clamping block 300 abuts against the screw rod 100, that is, the setting of the spring piece 420 can more effectively limit the movement of the clamping block 300 along the radial direction of the screw rod 100, so as to ensure the stable connection between the clamping block 300 and the screw rod 100.

[0060] Reference Figure 5 、 Figure 6 and Figure 7 As shown, it is understandable that in the related art, the traditional contact between the crescent and the screw rod 100 is surface contact. When the crescent is stuck or jumps relative to the screw rod 100, excessive local stress is easily generated in the local area of the contact surface, causing damage to the crescent, which in turn shortens the reliability and service life of the take-up mechanism.

[0061] Reference Figure 5 、 Figure 6 and Figure 7As shown, the line-reeling device of the tethered drone has a first inclined surface 3111 and a second inclined surface 3112 on the surface of the arc segment 311 facing the bottom wall of the guide groove 110. The first inclined surface 3111 and the second inclined surface 3112 are often close to each other in the direction of the bottom wall of the guide groove 110, and the ends of the first inclined surface 3111 and the second inclined surface 3112 are connected and jointly define a sliding line 3113. The sliding line 3113 can be slidably connected to the bottom wall of the guide groove 110, that is, the clamping block 300 of the line-reeling device of the tethered drone is in contact with the screw rod 100 through the sliding line 3113 in the initial state, that is, the clamping block 300 and the screw rod 100 are in line contact. As the clamping block 300 wears, the line contact slowly turns into surface contact.

[0062] Reference Figure 5 、 Figure 6 and Figure 7 As shown, the structure of the clamping block 300 and the screw rod 100 through line contact has at least the following characteristics:

[0063] Beneficial effects:

[0064] (1) Higher motion accuracy: Compared with other contact forms (such as surface contact or point contact), the contact area of line contact is more clear and relatively stable. During the movement process, the relative position change between the clamping block 300 and the screw rod 100 is smaller, which can reduce the motion error caused by unstable contact, thereby improving the motion accuracy of the line-reeling device of the tethered drone. For example, in some CNC machine tools, precision instruments and other equipment with high requirements for motion accuracy, the improvement in accuracy brought by line contact plays a vital role.

[0065] (2) Enhanced load-bearing capacity: Line contact distributes the load along a line, allowing it to withstand greater loads than point contact. Compared to surface contact, it is less likely to experience problems such as material damage or deformation caused by localized excessive stress, resulting in more uniform wear of the clamping block 300. For transmission systems that must withstand large loads, line contact can improve their reliability and service life.

[0066] (3) Improved Movement Flexibility: Line contact reduces the contact area and friction to a certain extent, making the movement of the clamping block 300 on the screw rod 100 more flexible and smooth. For sports scenarios that require frequent starts and stops or rapid reversing, the line contact solution can improve the system's response speed and work efficiency.

[0067] It should be understood that in some other embodiments, the arc segment 311 is provided with a sliding plane between the first inclined surface 3111 and the second inclined surface 3112, that is, the clamping block 300 can abut against the bottom wall of the guide groove 110 through the sliding plane. The sliding connection between the sliding plane with a smaller area and the guide groove 110 can also play a role in improving the movement accuracy, load-bearing capacity and movement flexibility.

[0068] Reference Figure 1 、 Figure 2 and Figure 3 As shown, it can be understood that, in this embodiment, two guide grooves 110 are provided, the spiral directions of the two guide grooves 110 are opposite and interconnected, and the clamping block 300 is configured to be able to move between the two guide grooves 110 .

[0069] Reference Figure 1 、 Figure 2 and Figure 3 As shown, the line-retrieving device of the tethered drone also includes a winding drum and a cable. The winding drum can be connected to the screw rod 100 through a belt to achieve synchronous rotation of the winding drum and the screw rod 100. The threading component includes two rollers 500. The outer peripheral surface of the roller 500 is provided with an embedding groove 510. The two rollers 500 are respectively rotatably connected to the block 410. A threading cavity 800 is constructed between the embedding grooves 510 of the two rollers 500. The cable is passed through the threading cavity 800 and connected to the winding drum.

[0070] Reference Figure 1 、 Figure 2 and Figure 3 As shown, one end of the cable is connected to the winding drum, and the other end of the cable can pass through the take-up device of the tethered drone and connect to the tethered drone at high altitude to achieve continuous supply of electricity to the drone.

[0071] Reference Figure 1 、 Figure 2 and Figure 3 As shown, the screw rod 100 rotates under the driving action of an external driving device or a winding drum, so that the clamping block 300 can slide along the guide groove 110 of the screw rod 100, and the clamping block 300 can move between the two guide grooves 110, that is, through the cooperation between the clamping block 300 and the guide groove 110, the clamping block 300 can be made to move back and forth in a straight line along the length direction of the screw rod 100, so that the cable can be regularly unwound or reeled on the winding drum, so that the winding or unwound of the cable on the winding drum is more uniform, so that the cable can make full use of the space on the winding drum.

[0072] Reference Figure 1 、 Figure 2 and Figure 3As shown, the cable passes through the threading cavity 800 constructed between the two rollers 500. The setting of the threading cavity 800 can enhance the restriction and guidance effect of the cable, which is beneficial to avoid the problem of cable entanglement, so that the unwinding and rewinding of the cable are more stable and reliable.

[0073] Reference Figure 1 、 Figure 2 and Figure 3 As shown, it can be understood that the line-retrieving device of the tethered drone also includes two support frames, which are respectively arranged at the two ends of the screw rod 100 and are rotatably connected to the screw rod 100. One end of the screw rod 100 passes through the support frame and is connected to the first transmission wheel. The two ends of the winding drum are respectively rotatably connected to the two support frames, and one end of the winding drum passes through the support frame and is connected to the second transmission wheel. The line-retrieving device of the tethered drone also includes a transmission belt, which is wound between the first transmission wheel and the second transmission wheel. The transmission of the transmission wheel can realize the synchronous rotation of the winding drum and the screw rod 100, which can reduce the number of driving sources and reduce the manufacturing cost of the line-retrieving device of the tethered drone.

[0074] Reference Figure 1 、 Figure 2 and Figure 3 As shown, specifically, the outer diameter of the first transmission wheel is larger than the outer diameter of the second transmission wheel, so that the rotation speed of the screw rod 100 can be adjusted to match the unwinding and rewinding efficiency of the cable, making the unwinding and rewinding of the cable more stable and reliable.

[0075] Reference Figure 1 、 Figure 2 and Figure 3 As shown, specifically, the line-retrieving device of the tethered drone also includes an adjusting wheel, an adjusting block and an adjusting rod. One end of the adjusting rod is rotatably connected to the adjusting block, and the other end of the adjusting wheel is threadedly connected to the support frame. The support frame is provided with an adjusting slot, and the adjusting block is arranged in the adjusting slot. The outer periphery of the adjusting block and the inner periphery of the adjusting slot are mutually restricted to limit the rotation of the adjusting block. By rotating the adjusting rod forward or reverse, the slider 400 can be driven to slide along the length direction of the adjusting slot, so that the adjusting wheel is close to or away from the transmission belt. The pressure applied to the transmission belt by the adjusting wheel can ensure that the transmission belt is in a tensioned state to ensure the transmission synchronization between the winding drum and the screw rod 100.

[0076] Reference Figure 1 、 Figure 4 and Figure 5 As shown, it can be understood that the two side surfaces facing away from the locking tooth 310 are respectively provided with arc-shaped friction surfaces 312 with smooth transition, the curvature of the arc-shaped friction surface 312 is adapted to the curvature of the arc-shaped segment 311, one end of the arc-shaped friction surface 312 is connected to the arc-shaped segment 311, and the arc-shaped friction surface 312 is configured to be able to abut against the side wall of the guide groove 110.

[0077] Reference Figure 1 、 Figure 4 and Figure 5 As shown, the user can design the arcuate friction surface 312 on the side of the coupling tooth 310 by fitting modeling, so that the arcuate friction surface 312 is adapted to the side wall of the guide groove 110, and the contact area between the arcuate friction surface 312 and the side wall of the guide groove 110 can be increased. The two arcuate friction surfaces 312 are connected with the side walls of the two guide grooves 110 by sliding, so that the friction on the side of the coupling tooth 310 is more uniform, and the sliding of the coupling tooth 310 and the screw rod 100 can be made more stable. The coupling tooth 310 can still maintain reliability after a certain amount of wear, which is beneficial to reduce the looseness of the coupling block 300 and the screw rod 100 after wear, so as to improve the durability of the line-reeling device of the tethered drone.

[0078] Reference Figure 1 、 Figure 4 and Figure 5 As shown, the thickness of the arc segment 311 gradually narrows from the middle to both ends, meeting the requirement that the engaging tooth 310 needs to move between the two guide grooves 110, so that the engaging tooth 310 slides more smoothly in the guide groove 110.

[0079] Reference Figure 1 、 Figure 4 and Figure 5 As shown, it can be understood that the clamping block 300 is made of chromium bearing steel material. Specifically, the clamping block 300 is made of GCr15 material and is vacuum quenched, so that the clamping teeth 310 have high and uniform hardness and wear resistance, and can reduce the deformation amplitude of the clamping block 300 with high precision requirements due to ordinary heat treatment methods.

[0080] Reference Figure 1 、 Figure 4 and Figure 5 As shown, the spring piece 420 is made of 65 manganese steel. Utilizing the rigidity and elasticity of the 65 manganese steel, it reliably restrains the clamping block 300 within the accommodating cavity 411 while also ensuring a certain degree of tension between the clamping block 300 and the screw rod 100. In conventional solutions, the wire take-up mechanism often uses a rigid structure to restrict the movement of the crescent, or a conventional compression spring to limit the movement of the crescent.

[0081] Reference Figure 1 、 Figure 4 and Figure 5 As shown, compared with conventional compression springs, the spring piece 420 of the line-reeling device for tethering a drone provided in an embodiment of the present invention has a large elastic coefficient, which can better limit the movement of the clamping block 300 along the radial direction of the screw rod 100, so as to ensure a stable sliding connection between the clamping block 300 and the screw rod 100, and can reduce the risk of the clamping block 300 and the screw rod 100 becoming stuck or loose.

[0082] Reference Figure 1 、 Figure 2 and Figure 3 As shown, it is understandable that if the slider 400 and the guide rod 200 are in direct sliding friction contact, it is likely to cause excessive frictional resistance and wear of the slider 400, thereby affecting the efficiency of the slider 400's linear reciprocating movement. The tethered drone retracting device also includes a ball bearing sleeve 700, the outer circumference of which is connected to the peripheral wall of the second through-hole 413, and the inner circumference of which is connected to the guide rod 200.

[0083] Reference Figure 1 、 Figure 2 and Figure 3 As shown, specifically, the ball bearing sleeve 700 can be connected to the block 410 by screws, and the main part of the ball bearing sleeve 700 is arranged in the second through-hole 413, so that the outer peripheral surface of the ball bearing sleeve 700 is connected to the peripheral wall of the second through-hole 413, and the inner peripheral surface of the ball bearing sleeve 700 is connected to the outer peripheral surface of the guide rod 200, that is, through the rolling connection of the ball bearing sleeve 700, the friction coefficient between the slider 400 and the guide rod 200 can be effectively reduced, so that the sliding of the slider 400 along the guide rod 200 is smoother, which can effectively reduce the wear of the slider 400.

[0084] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the scope of the present invention.

Claims

1. A line-reeling device for a tethered drone, characterized in that: include: A screw rod (100) having an outer peripheral surface provided with a spirally arranged guide groove (110); A guide rod (200) is arranged parallel to the screw rod (100); A clamping block (300) having clamping teeth (310); The slider (400) includes a spring piece (420) and a block (410), wherein the block (410) has a receiving cavity (411), a first through-hole (412) and a second through-hole (413); one end of the receiving cavity (411) is connected to the first through-hole (412), and the other end of the receiving cavity (411) is open. The screw rod (100) is passed through the first through-hole (412), the guide rod (200) is passed through the second through-hole (413), and the clamping block (300) is provided with a plurality of guide rods. ) is arranged in the accommodating cavity (411), the engaging tooth (310) has an arc segment (311) arranged toward the screw rod (100), the arc segment (311) is arranged in the guide groove (110) and is slidably connected to the guide groove (110), the elastic sheet (420) is connected to the block (410), the elastic sheet (420) at least partially closes the opening of the accommodating cavity (411), and the engaging block (300) is configured to be able to abut or separate from the elastic sheet (420); A threading member is connected to the slider (400).

2. The line-retrieving device for a tethered drone according to claim 1, characterized in that: The elastic sheet (420) has an abutting portion (421) located on the central axis of the accommodating cavity (411), and the elastic sheet (420) also has a third through hole (422) arranged around the abutting portion (421).

3. The line-retrieving device for a tethered drone according to claim 2, characterized in that: Two third through holes (422) are provided, and the two third through holes (422) are arranged in a mirror image along the length direction of the abutting portion (421); And / or, it further includes a plurality of threaded connectors (600), the spring piece (420) is provided with two or more mounting holes (423), the block (410) is provided with a plurality of screw holes, each of the mounting holes (423) is opposite to at least one of the screw holes, each of the mounting holes (423) is connected to one of the threaded connectors (600), and the threaded connector (600) is passed through the mounting hole (423) and is threadedly connected to the screw hole.

4. The line-retrieving device for a tethered drone according to claim 2, characterized in that: A contraction section (320) is provided at one end of the engaging block (300) facing away from the engaging tooth (310), and the outer diameter of the contraction section (320) gradually decreases in a direction approaching the elastic sheet (420). The contraction section (320) can abut against or separate from the abutment portion (421).

5. The line-retrieving device for a tethered drone according to claim 1, characterized in that: The arc segment (311) has a first inclined surface (3111) and a second inclined surface (3112) on the surface facing the bottom wall of the guide groove (110), and the first inclined surface (3111) and the second inclined surface (3112) tend to approach each other in the direction close to the bottom wall of the guide groove (110).

6. The line-retrieving device for a tethered drone according to claim 5, characterized in that: The first inclined surface (3111) and the second inclined surface (3112) are connected and jointly define a sliding line (3113), and the sliding line (3113) can be slidingly connected to the bottom wall of the guide groove (110).

7. The line-retrieving device for a tethered drone according to claim 1, characterized in that: Two guide grooves (110) are provided, the spiral directions of the two guide grooves (110) are opposite and they are connected to each other, and the clamping block (300) is configured to be able to move between the two guide grooves (110).

8. The line-retrieving device for a tethered drone according to claim 7, characterized in that: The two side surfaces facing away from the engaging teeth (310) are respectively provided with arc-shaped friction surfaces (312) with smooth transition, the curvature of the arc-shaped friction surface (312) matches the curvature of the arc-shaped segment (311), one end of the arc-shaped friction surface (312) is connected to the arc-shaped segment (311), and the arc-shaped friction surface (312) is configured to abut against the side wall of the guide groove (110); And / or, the thickness of the arc segment (311) gradually narrows from the middle to both ends.

9. The line-retrieving device for a tethered drone according to claim 1, characterized in that: The clamping block (300) is made of chromium bearing steel; And / or, the spring piece (420) is made of 65 manganese steel metal material; And / or, it also includes a ball bearing sleeve (700) connected to the block (410), the outer peripheral surface of the ball bearing sleeve (700) is connected to the peripheral wall of the second through hole (413), and the inner peripheral surface of the ball bearing sleeve (700) is connected to the guide rod (200).

10. The line-retrieving device for a tethered drone according to claim 1, characterized in that: The utility model also includes a winding drum and a cable. The threading component includes two rollers (500). The outer peripheral surface of the rollers (500) is provided with an embedding groove (510). The two rollers (500) are respectively connected to the block (410) in rotation. A threading cavity (800) is constructed between the embedding grooves (510) of the two rollers (500). The cable is passed through the threading cavity (800) and connected to the winding drum.

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