A tethered ground end take-up mechanism

Abstract

The application discloses a kind of tether ground end take-up mechanism, by take-up mechanism body, reciprocating screw rod and guide rod are composed, wherein two key components of slider assembly and moving assembly are specially designed.Slider assembly is matched with guide rod by its built-in friction optimization mechanism, the mechanism uses rolling friction instead of traditional sliding friction, significantly reduces the movement resistance.Moving assembly is innovatively engaged with reciprocating screw rod Line contact mode, by setting protruding structure in the center of contact surface, it changes traditional surface contact into accurate line contact, which not only ensures transmission accuracy, but also effectively reduces wear and tear.This double optimization design makes the whole take-up mechanism more stable and efficient when running, and through the cooperation of slider assembly and moving assembly, it realizes the precise control and stable operation of take-up process, overcomes the common problems of traditional take-up mechanism, such as rapid wear and tear, and is especially suitable for high-precision take-up occasions that require long-term stable operation.

Description

Technical Field

[0001] The present invention relates to the field of transmission devices, and in particular to a moored ground end take-up mechanism. Background Art

[0002] At present, in the design of the ground-end reeling device of tethered UAV, the reciprocating screw mechanism is the most mainstream solution. The mechanism is mainly composed of four core components: reciprocating screw, guide rod, crescent-shaped guide rail and slider. Among them, the reciprocating screw is an active transmission component, and its special thread structure realizes the automatic reversing function during forward and reverse rotation; the crescent-shaped guide rail cooperates with the slider to convert the rotational motion into precise linear reciprocating motion; and the parallel arranged guide rod plays a key stabilizing role, which can effectively suppress the swing and vibration of the slider during operation and ensure the smoothness of the reeling and releasing process. This mechanism design has significant advantages such as simple structure, reliable operation and easy maintenance. Through the coordinated cooperation of various components, the regular reciprocating cable arrangement function can be realized, meeting the needs of long-term stable operation of the tethered system.

[0003] Although the reciprocating screw take-up mechanism has the advantages of simple structure and reliable operation in the ground-end application of tethered drones, there are still several technical defects that need to be solved in actual use. First, in terms of motion design, direct sliding friction contact is usually adopted between the guide rod and the slider. This structure not only leads to a significant increase in friction resistance and reduces the transmission efficiency of the system, but also causes slider wear due to long-term friction, affecting the motion accuracy and service life of the mechanism. Secondly, the sliding friction between the crescent-shaped guide rail and the reciprocating screw also faces serious wear problems during long-term operation. As the working time accumulates, the wear of the crescent component will gradually increase, eventually leading to a decrease in the motion accuracy of the entire mechanism or even functional failure. These friction and wear problems seriously restrict the service life and reliability of the existing reciprocating screw take-up mechanism, which is particularly prominent in application scenarios that require long-term continuous work. They urgently need to be solved by optimizing the structural design or improving the material process. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies in the above-mentioned technology and to propose a moored ground end take-up mechanism to solve the above-mentioned technical problems.

[0005] The present invention provides a moored ground end take-up mechanism, comprising a take-up mechanism body, on which a reciprocating screw rod and a guide rod are provided, and is characterized in that it further comprises:

[0006] The slider assembly is arranged on the guide rod. The slider assembly is provided with a friction optimization mechanism. The friction optimization mechanism is located between the slider assembly and the guide rod. The friction optimization mechanism is used to reduce the friction between the slider assembly and the guide rod. The friction optimization mechanism includes a ball and a guide sleeve. The guide sleeve is arranged on the outside of the guide rod. A plurality of mounting holes are opened on the guide sleeve. The plurality of mounting holes are evenly arranged in an array. Balls are rotatably installed in the plurality of mounting holes. The ball and the guide sleeve are combined to form a ball guide sleeve.

[0007] The moving component is arranged on the reciprocating screw and is fixedly connected to the slider component. The moving component and the reciprocating screw are engaged with each other. A protrusion is provided at the center of the contact surface between the moving component and the reciprocating screw for linear contact between the moving component and the reciprocating screw.

[0008] Preferably, the slider assembly includes a sliding block, a through hole is opened on the surface of the sliding block, the ball guide sleeve is located in the through hole, one end of the ball abuts against the guide rod, and the other end of the ball abuts against the inner wall of the sliding block, and a guide sleeve mounting plate is installed on the upper surface of the sliding block, and the guide sleeve mounting plate and the sliding block are fixed by bolts.

[0009] Preferably, the moving assembly includes a moving block and a crescent tooth, the moving block has a accommodating space, the crescent tooth is located in the accommodating space of the moving block, a mounting block is fixedly mounted on the crescent tooth, the mounting block is slidingly connected to the inner wall of the moving block, a raised contact surface is provided at the arc center line of the crescent tooth, and the raised contact surface of the crescent tooth abuts against the reciprocating screw.

[0010] Preferably, friction surfaces are provided on the two side surfaces of the crescent tooth abutting against the reciprocating screw rod, and the shape and size of the friction surfaces are adapted to the guide groove on the reciprocating screw rod.

[0011] Preferably, the crescent teeth are made of chromium bearing steel and are subjected to vacuum quenching heat treatment.

[0012] Preferably, an opening is provided on the upper surface of the moving block, and the opening is connected to the accommodating space inside the moving block. A manganese steel shrapnel is installed on the upper surface of the moving block by screws, and the manganese steel shrapnel is located above the opening. The mounting block and the manganese steel shrapnel are in contact with each other.

[0013] Preferably, a take-up roller is rotatably mounted on the take-up mechanism body, and the take-up roller is located on one side of the reciprocating screw rod and the guide rod.

[0014] Preferably, two wire racks are fixedly mounted on the lower surface of the sliding block, and a wire wheel is rotatably mounted between the two wire racks.

[0015] Compared with the existing technology, it has the following beneficial effects:

[0016] The present invention provides a tethered ground-end take-up mechanism, which reduces frictional resistance during sliding by adding a friction optimization mechanism between the guide rod and the slider, allowing the slider to move more smoothly, thereby improving the transmission efficiency of the entire mechanism. At the same time, a protruding structure is designed on the contact surface of the reciprocating screw rod and the moving component, so that the two are in line contact instead of surface contact, which can reduce wear and extend the service life of the screw rod and the moving component, making the entire take-up mechanism more stable and durable, reducing maintenance requirements, and suitable for occasions requiring frequent reciprocating motion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of a tethered ground-end take-up mechanism of the present invention;

[0019] Figure 2 A schematic diagram of a moving assembly of a tethered ground-end take-up mechanism according to the present invention;

[0020] Figure 3 The figure is a schematic diagram of a slider assembly of a tethered ground-end take-up mechanism of the present invention.

[0021] In the figure, 1. Take-up mechanism body; 2. Reciprocating screw; 3. Guide rod; 4. Ball bearing; 5. Guide sleeve; 6. Sliding block; 7. Guide sleeve mounting plate; 8. Bolt; 9. Moving block; 10. Crescent tooth; 11. Mounting block; 12. Friction surface; 13. Screw; 14. Manganese steel shrapnel; 15. Take-up roller; 16. Wire rack; 17. Wire pulley. DETAILED DESCRIPTION

[0022] In order to make it easier to understand the structure of the present invention and the functional features and advantages that can be achieved, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings:

[0023] Example 1:

[0024] like Figures 1 to 3 As shown, the present invention provides a moored ground end take-up mechanism, comprising a take-up mechanism body 1, on which a reciprocating screw rod 2 and a guide rod 3 are provided, and is characterized in that it also includes:

[0025] The slider assembly is arranged on the guide rod 3. The slider assembly is provided with a friction optimization mechanism. The friction optimization mechanism is located between the slider assembly and the guide rod 3. The friction optimization mechanism is used to reduce the friction between the slider assembly and the guide rod 3. The friction optimization mechanism includes a ball 4 and a guide sleeve 5. The guide sleeve 5 is sleeved on the outside of the guide rod 3. A plurality of mounting holes are opened on the circumference of the guide sleeve 5. The plurality of mounting holes are evenly arranged in an array. Balls 4 are rotatably installed in the plurality of mounting holes. The ball 4 and the guide sleeve 5 are combined to form a ball guide sleeve.

[0026] The moving component is arranged on the reciprocating screw rod 2 and is fixedly connected to the slider component. The moving component and the reciprocating screw rod 2 are engaged with each other. A protrusion is provided at the center of the contact surface between the moving component and the reciprocating screw rod 2 for line contact between the moving component and the reciprocating screw rod 2.

[0027] When the reciprocating screw 2 rotates, the moving component engaged with it will carry the slider assembly to slide back and forth along the guide rod 3, thereby completing the line-winding and releasing action. The slider assembly is equipped with a friction reduction device to make it slide more smoothly on the guide rod 3, reducing friction loss; at the same time, the contact part between the moving component and the screw is designed to be a raised line contact structure, which can not only ensure the transmission accuracy, but also reduce wear and extend the service life. The entire mechanism has achieved a high-efficiency, low-wear and stable line-winding effect through the above design, which is suitable for occasions that require repeated line-winding and releasing. By arranging a precisely arranged ball 4 structure in the slider assembly, the friction mode of the traditional guide system is changed. When the slider moves along the guide rod 3, dozens of precisely calibrated balls 4 will form a uniform rolling contact on the surface of the guide rod 3, changing the traditional design The sliding friction in the slide is converted into rolling friction. This conversion brings multiple significant advantages. First, the friction coefficient is reduced, making the slider movement smoother and more fluent. Second, due to the small rolling contact area and uniform contact stress distribution, the wear on the surface of the guide rod 3 can be reduced. Third, the uniform distribution of the balls 4 ensures the balanced transfer of the load and avoids local stress concentration. In addition, these balls 4 are made of GCr15 bearing steel and have undergone special heat treatment. They have extremely high hardness and wear resistance. Combined with the precision-machined surface of the guide rod 3, it can ensure stable motion accuracy during long-term use. This design not only significantly improves the motion performance and service life of the mechanism, but also effectively reduces energy consumption and operating noise. It is particularly suitable for industrial application scenarios that require high precision and long life.

[0028] Example 2:

[0029] like Figures 1 to 3As shown, combined with the technical solution of Example 1, in this technical solution, the slider assembly includes a sliding block 6, a through hole is opened on the surface of the sliding block 6, the ball 4 and the guide sleeve 5 are located in the through hole, one end of the ball 4 abuts against the guide rod 3, and the other end of the ball 4 abuts against the inner wall of the sliding block 6, and a guide sleeve 5 mounting plate is installed on the upper surface of the sliding block 6, and the guide sleeve 5 mounting plate and the sliding block 6 are fixed by bolts 8.

[0030] The guide sleeve 5 with the ball 4 is installed in the hole on the sliding block 6. The ball 4 presses against the guide rod 3 on one side and against the inner wall of the sliding block 6 on the other side, so that the ball 4 can roll smoothly when sliding. A mounting plate is also fixed on the sliding block 6 with bolts 8 to lock the entire guide sleeve 5 in the sliding block 6, which not only ensures that the ball 4 can work normally, but also makes the entire structure strong and reliable.

[0031] Furthermore, the moving assembly includes a moving block 9 and a crescent tooth 10. The moving block 9 has a accommodating space. The crescent tooth 10 is located in the accommodating space of the moving block 9. A mounting block 11 is fixedly mounted on the crescent tooth 10. The mounting block 11 is slidingly connected to the inner wall of the moving block 9. A raised contact surface is provided at the arc center line of the crescent tooth 10. The raised contact surface of the crescent tooth 10 abuts against the reciprocating screw 2.

[0032] When the screw rotates, a line contact is formed between the raised portion of the crescent tooth 10 and the contact surface of the reciprocating screw 2, driving the entire moving block 9 to move, which not only ensures transmission accuracy but also reduces the friction surface 12 area. Setting the line contact has the following advantages:

[0033] Higher motion precision: Compared with previous contact forms such as surface contact or point contact, the line contact method has a more defined and relatively stable contact area. During motion, the relative position between the crescent and the lead screw changes less, which can reduce the motion error caused by unstable contact, thereby improving the motion precision of the entire device. For example, this accuracy improvement is very important in some CNC machine tools, precision instruments and other equipment with high motion precision requirements;

[0034] Enhanced load-bearing capacity: Line contact can distribute the load along a line, which can withstand greater loads than point contact. Compared with surface contact, the stress peak per unit area is relatively small, making it less likely to cause material damage or deformation caused by excessive local stress. For transmission systems that need to withstand large loads, switching to line contact can improve their reliability and service life.

[0035] Improved movement flexibility: The line contact form reduces the contact area to a certain extent, reduces the friction, and makes the movement of the crescent on the screw more flexible and smooth. This can improve the system's response speed and work efficiency for sports scenarios that require frequent starting and stopping or rapid reversing.

[0036] Furthermore, friction surfaces 12 are provided on the two side surfaces of the crescent tooth 10 that abut against the reciprocating screw rod 2 , and the shape and size of the friction surfaces 12 are adapted to the guide grooves on the reciprocating screw rod 2 .

[0037] The contact surfaces on both sides of the crescent teeth 10 completely fit the shape of the screw thread groove, thereby increasing the area of ​​the friction surface 12, making the wear evenly distributed and ensuring that reliability can be maintained after a certain amount of wear. When the screw rotates, the two friction surfaces 12 will fit tightly into the thread groove, making the transmission force more uniform, and can also effectively reduce shaking and wear, making the entire transmission process stable and durable.

[0038] Furthermore, the crescent tooth 10 is made of chromium bearing steel and is subjected to vacuum quenching heat treatment.

[0039] This solution has made significant innovations in the material selection and heat treatment process of the crescent tooth 10. It abandons the conventional practice of using aluminum alloy or engineering plastics and instead uses GCr15 chromium bearing steel as the base material. GCr15 is a high-quality bearing steel with a chromium content of 1.30%-1.65%, which gives the material excellent wear resistance and fatigue resistance. The vacuum quenching heat treatment process is used to treat the crescent tooth 10. This process not only makes the material obtain a high hardness of up to HRC58-62 by heating and cooling in a vacuum environment, but also ensures that the hardness is evenly distributed throughout the part. Compared with traditional heat treatment, vacuum Quenching can significantly reduce the deformation of parts, which is crucial for maintaining high-precision matching between the contact surface of the crescent tooth 10 and the reciprocating screw 2. This innovative material combination and process treatment enables the crescent tooth 10 to have excellent wear resistance, high hardness and dimensional stability. In addition, the excellent mechanical properties of chromium bearing steel can ensure that under long-term high-load working conditions, the crescent tooth 10 can still maintain stable transmission accuracy, avoiding the common plastic deformation and increased wear problems of ordinary materials. This innovative design not only improves the working reliability of the entire take-up mechanism, but also greatly reduces the maintenance frequency and replacement cost. It is particularly suitable for high-end application scenarios that require long-term stable operation.

[0040] Furthermore, an opening is provided on the upper surface of the moving block 9, which is connected to the accommodating space inside the moving block 9. A manganese steel shrapnel 14 is installed on the upper surface of the moving block 9 by a screw 13. The manganese steel shrapnel 14 is located above the opening, and the mounting block 11 and the manganese steel shrapnel 14 abut against each other.

[0041] When the mechanism is running, the manganese steel shrapnel 14 can automatically adjust the pressure and always maintain the optimal contact state between the crescent tooth 10 and the screw rod, making the transmission more stable and reliable. It can also automatically compensate for the wear gap, greatly extending the service life and being more durable than the traditional fixed structure.

[0042] Furthermore, a take-up roller 15 is rotatably mounted on the take-up mechanism body 1 , and the take-up roller 15 is located on one side of the reciprocating screw rod 2 and the guide rod 3 .

[0043] When the mechanism is working, the slider is driven to move back and forth by the screw rod, and the take-up roller 15 rotates accordingly, winding the cable neatly.

[0044] Furthermore, two wire racks 16 are fixedly mounted on the lower surface of the sliding block 6 , and a wire wheel 17 is rotatably mounted between the two wire racks 16 .

[0045] When the mechanism is working, the cable will pass smoothly around the guide wheel, and the guide wheel will automatically rotate as the cable is reeled in and out, turning the sliding friction into more labor-saving rolling friction. This not only protects the cable surface from being scratched, but also makes the winding process smoother and easier.

[0046] The working principle of the tethered ground terminal take-up mechanism of this application is as follows:

[0047] When the reciprocating screw 2 rotates, it will drive the moving component that engages with it to move, and the moving component will drive the entire mechanism to slide smoothly along the guide rod 3 through the slider assembly. A ball 4 guide sleeve 5 structure is adopted on the guide rod 3. By evenly arranging the rotatable balls 4 on the guide sleeve 5, the friction force is greatly reduced when the slider assembly slides; secondly, the crescent tooth 10 in the moving component adopts a special design, and a protrusion is set at its center position to form a line contact with the screw, and at the same time, the friction surfaces 12 on both sides fit the screw guide groove, which not only ensures the transmission accuracy but also reduces wear. The crescent tooth 10 is made of high-strength chromium bearing steel and is heat-treated, and is combined with the manganese steel shrapnel 14 above to provide appropriate pressure, so that the entire mechanism can still maintain stable and reliable performance in long-term reciprocating motion.

[0048] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any person skilled in the art can, without departing from the scope of the technical solution of the present invention, use the above technical content to make many possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any changes, modifications, equivalent changes and modifications made to the above embodiments based on the technology of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection of the present technical solution.

Claims

1. A moored ground end take-up mechanism, comprising a take-up mechanism body (1), wherein a reciprocating screw rod (2) and a guide rod (3) are provided on the take-up mechanism body (1), characterized in that: Also includes: A slider assembly, wherein the slider assembly is arranged on the guide rod (3), and a friction optimization mechanism is provided on the slider assembly, wherein the friction optimization mechanism is located between the slider assembly and the guide rod (3), and the friction optimization mechanism is used to reduce the friction between the slider assembly and the guide rod (3), and the friction optimization mechanism includes a ball (4) and a guide sleeve (5), wherein the guide sleeve (5) is sleeved on the outer side of the guide rod (3), and a plurality of mounting holes are opened on the circumference of the guide sleeve (5), wherein the plurality of mounting holes are evenly arranged in an array, and a plurality of rotating balls are formed in the plurality of mounting holes. A ball (4) is installed, and the ball (4) and the guide sleeve (5) are combined to form a ball guide sleeve. The slider assembly includes a sliding block (6), a through hole is opened on the surface of the sliding block (6), and the ball (4) guide sleeve (5) is located in the through hole. One end of the ball (4) abuts against the guide rod (3), and the other end of the ball (4) abuts against the inner wall of the sliding block (6). A guide sleeve mounting piece (7) is installed on the upper surface of the sliding block (6), and the guide sleeve mounting piece (7) and the sliding block (6) are fixedly installed by bolts (8); A moving component is provided on the reciprocating screw (2) and is fixedly connected to the slider component. The moving component and the reciprocating screw (2) are engaged with each other. A protrusion is provided at the center of the contact surface between the moving component and the reciprocating screw (2) so that the moving component and the reciprocating screw (2) can make line contact. The moving component includes a moving block (9) and a crescent tooth (10). The moving block (9) has a receiving space. The crescent tooth (10) is located in the receiving space of the moving block (9). A mounting block (11) is fixedly installed on the crescent tooth (10). The mounting block (11) is slidably connected to the inner wall of the moving block (9). A convex contact surface is provided at the arc center line of the crescent tooth (10). The convex contact surface of the crescent tooth (10) abuts against the reciprocating screw (2).

2. A tethered ground end take-up mechanism according to claim 1, characterized in that: Friction surfaces (12) are provided on the two side surfaces of the crescent teeth (10) that abut against the reciprocating screw rod (2), and the shape and size of the friction surfaces (12) are adapted to the guide grooves on the reciprocating screw rod (2).

3. A tethered ground end take-up mechanism according to claim 2, characterized in that: The crescent teeth (10) are made of chromium bearing steel and are subjected to vacuum quenching heat treatment.

4. A tethered ground end take-up mechanism according to claim 3, characterized in that: An opening is provided on the upper surface of the moving block (9), and the opening is communicated with the accommodating space in the moving block (9). A manganese steel shrapnel (14) is installed on the upper surface of the moving block (9) by means of a screw (13). The manganese steel shrapnel (14) is located above the opening, and the mounting block (11) and the manganese steel shrapnel (14) are in contact with each other.

5. The tethered ground end take-up mechanism according to claim 1, characterized in that: A wire take-up roller (15) is rotatably mounted on the wire take-up mechanism body (1), and the wire take-up roller (15) is located on one side of the reciprocating screw rod (2) and the guide rod (3).

6. A tethered ground end take-up mechanism according to claim 5, characterized in that: Two wire racks (16) are fixedly mounted on the lower surface of the sliding block (6), and a wire wheel (17) is rotatably mounted between the two wire racks (16).

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