Differential lead screw rigid-flexible coupling electric telescopic rod

Abstract

The utility model relates to the technical field of telescopic rods, in particular to a differential screw rigid-flexible coupling electric telescopic rod. In order to solve the problems that an existing posture adjusting platform is complex in control, rod piece stretching and retracting control depends on material heating, heat influences are generated on other structures, and the stability and accuracy of a system are interfered, the following technical scheme is provided: the posture adjusting platform comprises a mounting seat which is arranged in a square shape; the driving mechanism is mounted in the mounting seat; the two sets of synchronous plates are arranged on the two sides of the mounting base correspondingly, and a moving frame is jointly mounted on the two sets of synchronous plates; the positioning plate is arranged on one side of the mounting seat; and the adjusting assembly is connected with the synchronous plate and the positioning plate and is used for finely adjusting the distance between the synchronous plate and the positioning plate. According to the utility model, high-precision adjustment of postures can be realized, the control difficulty is simplified, the stability and accuracy of system operation are improved, and the application range of related technologies in practical engineering is expanded.

Description

Technical Field

[0001] This utility model relates to the field of telescopic rod technology, and in particular to a differential screw rigid-flexible coupling electric telescopic rod. Background Technology

[0002] In many engineering fields today, achieving high-precision attitude adjustment has always been a critical and highly challenging task. Existing technology (patent number: 202311041983.9) proposes a six-degree-of-freedom parallel adjustment platform with coarse and fine two-stage drive. This solution has certain innovations. By adding a lower-level flexible hinge fine adjustment mechanism, the accuracy of the six-degree-of-freedom parallel mechanism is improved to a certain extent.

[0003] However, a thorough analysis of the topological relationships of this scheme reveals that the lower-level mechanism is installed at an angle, forming a 12-DOF platform, which undoubtedly greatly increases the complexity and difficulty of control. Furthermore, the extension and retraction of the platform's members are controlled by heating with positive and negative expansion materials. This control method inevitably has a thermal impact on other structures, potentially interfering with the stability and accuracy of the entire system and imposing numerous limitations on practical applications. Therefore, this invention proposes a differential screw-driven rigid-flexible coupling electric telescopic rod. Utility Model Content

[0004] The purpose of this invention is to address the problems in the prior art, such as the complexity of control of existing attitude adjustment platforms and the fact that the extension and retraction of rods relies on material heating, which can have a thermal impact on other structures and interfere with the stability and accuracy of the system. The invention proposes a differential screw rigid-flexible coupling electric telescopic rod.

[0005] The technical solution of this utility model is as follows: A differential screw rigid-flexible coupling electric telescopic rod includes a hollow mounting base, which is arranged in a "U" shape; a drive mechanism installed in the mounting base; two sets of synchronization plates, which are respectively arranged on the upper and lower sides of the mounting base, i.e., the top and bottom of the mounting base, and a moving frame is installed on both sets of synchronization plates, which is located on one side of the mounting base; a positioning plate arranged on one side of the mounting base; and an adjustment component connected to the synchronization plate and the positioning plate, which is used to fine adjust the distance between the synchronization plate and the positioning plate. The moving end of the drive mechanism is connected to the positioning plate, and the drive mechanism is used to drive the synchronization plate and the positioning plate to move synchronously.

[0006] Optionally, the synchronization board includes a mounting frame. Inside the mounting frame, multiple groups of first flexible sheets are fixedly connected. The mounting frame is connected to a mounting table through the first flexible sheets. Second flexible sheets are provided on both sides of the mounting table. A first pressing block is provided on the side of the second flexible sheet away from the mounting table. The first pressing block is fixed to the mounting table by bolts. A second pressing block is also provided on the side of the second flexible sheet close to the mounting table. The second pressing block is fixed to the mounting frame by bolts.

[0007] Optionally, first sliders are installed on both the mounting frame and the positioning plate close to the mounting seat. A first slide rail is commonly slidably connected among multiple groups of the first sliders on the same side. Multiple groups of the first slide rails are fixedly connected to the mounting seat.

[0008] Optionally, the driving mechanism includes a fixing plate fixedly connected to the inside of the mounting seat. A first servo motor is installed on one side of the fixing plate. The output end of the first servo motor is fixedly connected to a first threaded rod. The first threaded rod is rotatably connected to the inside of the mounting seat. A first threaded sleeve is threadedly connected to the first threaded rod. A moving block is fixedly connected to the first threaded sleeve. The moving block is fixedly connected to the positioning plate.

[0009] Optionally, the adjustment component includes a second threaded sleeve installed in the moving block. A second threaded rod is threadedly connected to the second threaded sleeve. A third threaded sleeve is threadedly connected to the second threaded rod. A synchronization block is fixedly connected to the third threaded sleeve. The synchronization block is fixedly connected between two mounting tables. The adjustment component further includes a second servo motor. An installation plate is provided outside the second servo motor. The second servo motor is installed on the installation plate. The output end of the second servo motor penetrates through the installation plate and is fixedly connected to the second threaded rod. The installation plate is connected to the bottom of the positioning plate. [[ID=I0]]

[0010] Optionally, a matching mechanism is provided between the installation plate and the moving frame. The installation plate and the moving frame are connected through the matching mechanism. The matching mechanism includes a second slide rail fixedly connected to the top of the installation plate. A second slider is slidably connected to the second slide rail. The second slider is fixedly connected to the moving frame.

[0011] Optionally, the thread pitch inside the second threaded sleeve is greater than the thread pitch inside the third threaded sleeve. The thread pitches at both ends of the second threaded rod are different.

[0012] Optionally, the moving frame is arranged in a "U" shape. A second fixing seat is installed on the side of the moving frame away from the mounting seat. One end of the mounting seat away from the second fixing seat is fixedly connected to a first fixing seat.

[0013] In summary, the present application includes at least one of the following beneficial technical effects:

[0014] This invention achieves both coarse and fine adjustments to the length of the telescopic rod through a unique drive mechanism and adjustment component design. The first servo motor drives the first threaded rod to rotate, allowing for approximate length adjustment. The adjustment component driven by the second servo motor utilizes the difference in thread pitch to make minute adjustments to the position of the mounting platform, improving positioning accuracy. At the same time, the cooperation between the first slider and the first slide rail, the second slide rail and the second slider, and the buffering of friction by the first and second flexible plates ensure stable movement of each component, greatly improving the overall smoothness and reliability of operation and reducing shaking and deviation.

[0015] Furthermore, the equipped connecting components can adapt to the angular offset caused by length adjustment. In the attitude coarse and fine composite adjustment platform, the position and attitude of the adjustment plate can be flexibly adjusted by adjusting the length of the telescopic rod. In addition, the drive mechanism can also use a linear motor to achieve long stroke movement, which expands the scope of application. Whether in work scenarios with extremely high precision requirements or in long stroke operation environments, it can perform well and has a wide range of application prospects.

[0016] In summary, this invention facilitates high-precision attitude adjustment, simplifies control complexity, enhances system stability and accuracy, and expands the application scope of related technologies in practical engineering. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of a differential lead screw rigid-flexible coupling electric telescopic rod;

[0018] Figure 2 yes Figure 1 A schematic diagram of the cross-sectional structure;

[0019] Figure 3 yes Figure 2 Enlarged diagram of point A in the middle.

[0020] Figure label:

[0021] 1. Mounting base; 11. First fixed base; 12. First slider; 13. First slide rail;

[0022] 2. Drive mechanism; 21. Fixed plate; 22. First servo motor; 23. First threaded rod; 24. First threaded sleeve; 25. Moving block;

[0023] 3. Synchronization plate; 31. Mounting frame; 32. First flexible sheet; 33. Mounting platform; 34. Second flexible sheet; 35. First pressure block; 36. Second pressure block;

[0024] 4. Moving frame; 41. Second fixed seat;

[0025] 5. Positioning plate;

[0026] 6. Adjustment component; 61. Second threaded sleeve; 62. Second threaded rod; 63. Third threaded sleeve; 64. Synchronizing block; 65. Second servo motor; 66. Mounting plate;

[0027] 7. Coordinating mechanism; 71. Second slide rail; 72. Second slider. Detailed Implementation

[0028] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0029] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0030] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Example

[0034] like Figure 1As shown, this utility model proposes a differential screw rigid-flexible coupling electric telescopic rod, including a mounting base 1. The mounting base 1 is U-shaped and is made of multiple steel plates welded together or assembled by threads. This structural form gives the mounting base 1 high structural strength and stability, and can reliably support and fix various components installed later, providing a solid foundation for the stable operation of the entire electric telescopic rod.

[0035] For further details, please refer to Figure 2 The aforementioned telescopic rod includes a drive mechanism 2 installed in the mounting base 1. The moving end of the drive mechanism 2 is connected to the positioning plate 5. The drive mechanism 2 is used to drive the synchronous plate 3 and the positioning plate 5 to move synchronously. The drive mechanism 2 includes a fixed plate 21 fixedly connected to the inner side of the mounting base 1. A first servo motor 22 is installed on one side of the fixed plate 21. A first threaded rod 23 is fixedly connected to the output end of the first servo motor 22. After the first servo motor 22 is started, it drives the first threaded rod 23 to rotate. The first threaded rod 23 is rotatably connected to the inner side of the mounting base 1, so that the first threaded rod 23 rotates in its original position. A first threaded sleeve 24 is threadedly connected to the first threaded rod 23. A moving block 25 is fixedly connected to the first threaded sleeve 24. The moving block 25 is fixedly connected to the positioning plate 5. When the first servo motor 22 rotates, it drives the first threaded sleeve 24 to move, and through the moving block 25, it drives the positioning plate 5 to move. The design of this drive mechanism 2 realizes efficient power transmission and can accurately control the movement of the positioning plate 5, providing a stable power source for subsequent synchronous movement and overall adjustment.

[0036] The drive mechanism 2 can also use a linear motor, with the moving end of the linear motor connected to the positioning plate 5 to achieve long-stroke movement. The application of a linear motor enables the electric telescopic pole to operate quickly and smoothly in long-stroke operation scenarios, effectively expanding its application range.

[0037] Furthermore, such as Figure 1 and Figure 3As shown in the figure, the telescopic rod further includes two groups of synchronization plates 3, which are respectively arranged on both sides of the mounting seat 1. The synchronization plate 3 includes a mounting frame 31, and a plurality of first flexible sheets 32 are fixedly connected to the inner side of the mounting frame 31. The mounting frame 31 is connected to a mounting table 33 through the first flexible sheets 32. The mounting table 33 is connected to the mounting frame 31 through the first flexible sheets 32, which is used to eliminate the influence brought by the friction between the first slider 12 and the first slide rail 13. The setting of the first flexible sheets 32 effectively buffers the vibration and displacement deviation generated by the friction, and greatly improves the smoothness and accuracy of the movement of the mounting table 33. Second flexible sheets 34 are arranged on both sides of the mounting table 33. A first pressing block 35 is arranged on the side of the second flexible sheet 34 away from the mounting table 33. The first pressing block 35 is fixed to the mounting table 33 by bolts. A second pressing block 36 is also arranged on the side of the second flexible sheet 34 close to the mounting table 33. The second pressing block 36 is fixed to the mounting frame 31 by bolts. The setting of the first pressing block 35 and the second pressing block 36 makes the second flexible sheet 34 firmly fixed to the mounting frame 31 and the mounting table 33. The connection stability between the mounting table 33 and the mounting frame 31 is further improved through the second flexible sheets 34, and at the same time, the influence of friction is eliminated. The second flexible sheets 34 further enhance the anti-interference ability of the overall structure, ensuring that the mounting table 33 can still work stably under complex working conditions.

[0038] A moving frame 4 is commonly installed on the two groups of synchronization plates 3. The moving frame 4 is arranged in a "U" shape. A second fixed seat 41 is installed on the side of the moving frame 4 away from the mounting seat 1. One end of the mounting seat 1 away from the second fixed seat 41 is fixedly connected to a first fixed seat 11. The settings of the moving frame 4, the first fixed seat 11 and the second fixed seat 41 provide connection and installation interfaces for the entire electric telescopic rod, facilitating combination and application with other devices.

[0039] Specifically, the telescopic rod includes a positioning plate 5 arranged on one side of the mounting seat 1. The positioning plate 5 is arranged on the side of the synchronization plate 3 close to the fixed plate 21. The positioning plate 5 plays a key role in positioning and connection, ensuring the relative position accuracy between components and ensuring the coordinated operation of the entire system.

[0040] Specifically, first sliders 12 are installed on both the mounting frame 31 and the positioning plate 5 on the side close to the mounting seat 1. A first slide rail 13 is commonly slidably connected among the first sliders 12 on the same side. The plurality of first slide rails 13 are all fixedly connected to the mounting seat 1. Through the settings of the first sliders 12 and the first slide rail 13, the movements of the mounting frame 31, the positioning plate 5 and the moving frame 4 are stable. The cooperation of the first sliders 12 and the first slide rail 13 effectively restricts the movement trajectories of the components, improves the smoothness and reliability of the movement, and reduces shaking and deviation.

[0041] Furthermore, the aforementioned telescopic rod also includes an adjustment assembly 6 connected to the synchronization plate 3 and the positioning plate 5. The adjustment assembly 6 is used to fine-tune the distance between the synchronization plate 3 and the positioning plate 5. The adjustment assembly 6 includes a second threaded sleeve 61 installed in the moving block 25. The second threaded sleeve 61 remains fixed in position after the first servo motor 22 stops. A second threaded rod 62 is threadedly connected to the second threaded sleeve 61. The second threaded rod 62 moves along its own length direction when it rotates. A third threaded sleeve 63 is threadedly connected to the second threaded rod 62. When the second threaded rod 62 rotates, it drives the third threaded sleeve 63 to move along its length direction. A synchronization block 64 is fixedly connected to the third threaded sleeve 63. The synchronization block 64 is fixedly connected between the two sets of mounting platforms 33. When the third threaded sleeve 63 moves, it drives the two sets of mounting platforms 33 to move through the synchronization block 64. The adjustment component 6 also includes a second servo motor 65. A mounting plate 66 is provided on the outside of the second servo motor 65, which is mounted on the mounting plate 66. The output end of the second servo motor 65 passes through the mounting plate 66 and is fixedly connected to the second threaded rod 62 via a coupling. The mounting plate 66 is connected to the bottom of the positioning plate 5. After starting, the second servo motor 65 drives the second threaded rod 62 to rotate. When the second threaded rod 62 rotates, its direction of movement is opposite to that of the third threaded sleeve 63. Because the internal thread pitch of the second threaded sleeve 61 is greater than that of the third threaded sleeve 63, and the thread pitches at both ends of the second threaded rod 62 are different, the movement distance of the third threaded sleeve 63 is less than that of the second threaded rod 62, thereby reducing the displacement of the third threaded sleeve 63 and improving the positioning accuracy of the mounting platform 33. This unique design of the adjustment component 6 enables high-precision fine-tuning of the position of the mounting platform 33, meeting the needs of some work scenarios with extremely high precision requirements.

[0042] A mating mechanism 7 is provided between the mounting plate 66 and the positioning plate 5. The mating mechanism 7 includes a second slide rail 71 fixedly connected to the top of the mounting plate 66, and a second slider 72 slidably connected to the second slide rail 71. The second slider 72 is fixedly connected to the positioning plate 5. The arrangement of the second slide rail 71 and the second slider 72 allows the mounting plate 66 to slide on the bottom of the positioning plate 5. The mating mechanism 7 further optimizes the coordinated movement between the components, reduces friction and interference between components, and improves the overall operating efficiency.

[0043] In this embodiment, when adjusting the approximate length of the telescopic rod, the first servo motor 22 is activated to drive the first threaded rod 23 to rotate. As the first threaded rod 23 rotates, it drives the first threaded sleeve 24 to move. The first threaded sleeve 24, through the moving block 25, drives the positioning plate 5 to move. The positioning plate 5 moves smoothly under the limiting action of the first slider 12 and the first slide rail 13. Since the synchronous plate 3 and the positioning plate 5 are connected together through the adjusting assembly 6, the synchronous plate 3 moves synchronously when the positioning plate 5 moves, thereby driving the moving frame 4 to move and adjusting the distance between the first fixed seat 11 and the second fixed seat 41, thus adjusting the length of the telescopic rod. When fine-tuning the length of the telescopic rod, the second servo motor 65 is activated, driving the second threaded rod 62 to rotate. As the second threaded rod 62 rotates, since the position of the second threaded sleeve 61 is fixed, the second threaded rod 62 moves along its own length direction, simultaneously driving the third threaded sleeve 63 to move. As the second threaded rod 62 moves, it drives the second servo motor 65 and the mounting plate 66 to move as well. The mounting plate 66 slides below the moving frame 4 due to the arrangement of the second slide rail 71 and the second slider 72. Simultaneously, when the second threaded rod 62 rotates, it also drives the third threaded sleeve 63 to move. The direction of movement of the third threaded sleeve 63 is opposite to that of the second threaded rod 62. Since the pitch of the internal threads of the second threaded sleeve 61 is greater than that of the third threaded sleeve 63, the displacement of the third threaded sleeve 63 during one revolution of the second threaded rod 62 is smaller. This facilitates fine adjustments to the position of the mounting platform 33, ensuring accurate positioning of the mounting platform 33 and improving the accuracy of adjusting the length of the telescopic rod. Furthermore, the arrangement of the first flexible plate 32 and the second flexible plate 34 effectively prevents the friction between the first slider 12 and the first slide rail 13 from affecting the mounting platform 33.

[0044] The above specific embodiments are merely optional embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A differential screw rigid-flexible coupling motorized telescopic rod, characterized in that, Include: The mounting seat (1) of hollow structure; The drive mechanism (2) installed in the mounting seat (1); Two sets of synchronization plate (3), two sets of synchronization plate (3) are respectively arranged on the upper and lower sides of mounting seat (1), two sets of synchronization plate (3) are commonly installed with moving frame (4); The positioning plate (5) is arranged on one side of the mounting seat (1); The adjustment assembly (6) connected with the synchronization plate (3) and the positioning plate (5), the adjustment assembly (6) is used for fine tuning the distance between the synchronization plate (3) and the positioning plate (5), the moving end of the drive mechanism (2) is connected with the positioning plate (5), and the drive mechanism (2) is used for driving the synchronization plate (3) and the positioning plate (5) to move synchronously.

2. A rigid-flexible coupled electric telescopic rod with differential screw according to claim 1, characterized in that, The synchronization plate (3) includes the mounting frame (31), the mounting frame (31) is fixedly connected with a plurality of first flexible sheets (32) on the inner side, the mounting frame (31) is connected with the mounting table (33) through the first flexible sheet (32), the mounting table (33) is provided with the second flexible sheet (34) on both sides, the first pressing block (35) is arranged on the side, away from the mounting table (33), of the second flexible sheet (34), the first pressing block (35) is fixed with the mounting table (33) through bolts, and the second pressing block (36) is further arranged on the side, close to the mounting table (33), of the second flexible sheet (34). The second pressing block (36) is fixed with the mounting frame (31) through bolts.

3. A rigid-flexible coupled electric telescopic rod with differential screw according to claim 2, characterized in that, The mounting frame (31) and the positioning plate (5) are installed with the first sliding block (12) on the side close to the mounting seat (1), a plurality of first sliding blocks (12) are commonly connected with the first sliding rail (13) on the same side, and a plurality of first sliding rails (13) are fixedly connected with the mounting seat (1).

4. The rigid-flexible coupled electric telescopic rod with differential screw according to claim 3, characterized in that, The drive mechanism (2) includes the fixed plate (21) fixedly connected to the inner side of the mounting seat (1), the first servo motor (22) is installed on one side of the fixed plate (21), the output end of the first servo motor (22) is fixedly connected with the first threaded rod (23), the first threaded rod (23) is rotatably connected to the inner side of the mounting seat (1), the first threaded rod (23) is threadedly connected with the first threaded sleeve (24), the first threaded sleeve (24) is fixedly connected with the moving block (25), and the moving block (25) is fixedly connected with the positioning plate (5).

5. A rigid-flexible coupled electric telescopic rod with differential screw according to claim 4, characterized in that, The adjusting assembly (6) comprises a second threaded sleeve (61) installed in the moving block (25), a second threaded rod (62) is threadedly connected in the second threaded sleeve (61), a third threaded sleeve (63) is threadedly connected on the second threaded rod (62), a synchronous block (64) is fixedly connected on the third threaded sleeve (63), the synchronous block (64) is fixedly connected between the two groups of mounting tables (33), the adjusting assembly (6) further comprises a second servo motor (65), an installation plate (66) is arranged outside the second servo motor (65), the second servo motor (65) is installed on the installation plate (66), an output end of the second servo motor (65) penetrates through the installation plate (66) and is fixedly connected with the second threaded rod (62), and the installation plate (66) is connected to the bottom of the positioning plate (5).

6. A rigid-flexible coupled electric telescopic rod with differential screw according to claim 5, characterized in that, A cooperation mechanism (7) is arranged between the installation plate (66) and the moving frame (4), the installation plate (66) and the moving frame (4) are connected through the cooperation mechanism (7), and the cooperation mechanism (7) comprises a second sliding rail (71) fixedly connected to the top of the installation plate (66), and a second sliding block (72) is slidingly connected on the second sliding rail (71) and fixedly connected with the moving frame (4).

7. A rigid-flexible coupled electric telescopic rod with differential screw according to claim 6, characterized in that, The internal thread tooth pitch of the second threaded sleeve (61) is greater than that of the third threaded sleeve (63), and the thread tooth pitches of the two ends of the second threaded rod (62) are different.

8. A rigid-flexible coupled electric telescopic rod with differential screw according to claim 7, characterized in that, The moving frame (4) is arranged in a "Y" shape, a second fixing base (41) is arranged on the side of the moving frame (4) away from the mounting base (1), and a first fixing base (11) is fixedly connected to one end of the mounting base (1) away from the second fixing base (41).

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