Mechanical arm arm link mechanism

Abstract

The utility model discloses a kind of mechanical arm arm connection mechanisms in the technical field of mechanical arm connection, including mechanical hand body, the bottom of mechanical hand body is connected with arm connection assembly, the bottom of arm connection assembly is also provided with support pedestal, arm connection assembly includes first connecting component, the top of first connecting component is provided with second connecting component, second connecting component includes installation base plate, the top of installation base plate is provided with hinged seat, the mechanical arm arm connection mechanism of the present design, through the cooperation of first connecting component and second connecting component, the flexible movement of mechanical arm in multiple degrees of freedom space can be realized, when motor transmission case receives control signal, can drive adjusting turntable rotation, can drive entire second connecting component relative to first connecting component to carry out angle adjustment, this design makes mechanical arm can change pose flexibly in space, so different operation angle needs can be adapted.

Description

Technical Field

[0001] This utility model relates to the field of robotic arm connection technology, and in particular to a robotic arm arm connection mechanism. Background Technology

[0002] A robotic arm is an automated actuator that mimics the movements of a human arm. It typically consists of multiple joints, links, drive mechanisms, and a control system. Its joints can achieve multi-degree-of-freedom motion, and its end effector can perform various tasks such as grasping, handling, welding, assembly, and painting. Robotic arms are widely used in industrial production, medical surgery, aerospace exploration, and hazardous environments, replacing or assisting humans in high-intensity, high-precision, or high-risk work environments, improving productivity and operational safety. Their working principle is based on the synergistic effect of sensing, actuation, and control; by precisely controlling the position and posture of each joint, a desired spatial motion trajectory is achieved.

[0003] In existing technologies, robotic arm connection mechanisms generally suffer from problems such as simple structure, limited adjustment range, and insufficient transmission stability. For example, some relatively fixed connection mechanisms require disassembly or repositioning of the entire mechanism when changing transmission arms of different lengths or angles, which not only increases assembly complexity but also prolongs production downtime. Furthermore, in multi-degree-of-freedom operations and high-precision positioning applications, insufficient fit of connecting components can easily lead to wobbling or jamming of the transmission arm during movement, affecting the positioning accuracy of the end effector and even causing dimensional errors or assembly misalignments in the processed parts. These problems not only reduce the operating efficiency of the robotic arm but also increase maintenance costs and production risks.

[0004] Therefore, there is an urgent need to provide a robotic arm arm connection mechanism with a reasonable structure, stable transmission, and strong adjustment capability to meet the usage requirements under complex working conditions. Based on this, we propose a robotic arm arm connection mechanism. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] Therefore, the purpose of this utility model is to provide a robotic arm arm connection mechanism that can solve the problems of simple structure, limited adjustment range and insufficient transmission stability of existing robotic arm arm connection mechanisms.

[0007] To solve the above technical problems, this utility model provides a robotic arm arm connection mechanism, which adopts the following technical solution: it includes a robotic arm body, an arm connection component is connected to the bottom of the robotic arm body, a support base is also provided at the bottom of the arm connection component, the arm connection component includes a first connecting component, and a second connecting component is provided at the top of the first connecting component; The second connecting component includes a mounting chassis, the top of which is provided with a hinge seat.

[0008] Optionally, one end of the robotic arm body is connected to a first transmission arm, the end of the first transmission arm away from the robotic arm body is connected to a second transmission arm, and the end of the second transmission arm away from the first transmission arm is also connected to a third transmission arm, with one end of the third transmission arm being connected to the hinge seat.

[0009] Optionally, the first connecting component includes a first connector, and a second connector is disposed on the top of the first connector.

[0010] Optionally, the second connecting component includes a motor transmission box, the output end of which is connected to an adjusting turntable. The adjusting turntable matches the structure of the mounting chassis and is fixedly connected to the mounting chassis. An embedded groove is provided in the middle of the motor transmission box, and movable sliders are respectively provided on the bottom of both sides of the motor transmission box.

[0011] Optionally, movable guide rails are installed on both sides of the top of the support base. The movable guide rails are matched with the movable slider structure, and the movable guide rails and the movable slider are in sliding fit. An adjusting screw is connected to the middle of the support base through a bearing. The adjusting screw is in threaded fit with the first connecting member. A forward and reverse motor is also provided at one end of the support base. The output end of the forward and reverse motor is in transmission connection with the adjusting screw.

[0012] Optionally, the first connector includes a U-shaped frame plate, which matches the embedded groove structure. The U-shaped frame plate and the embedded groove are engaged by a snap-fit. Both the U-shaped frame plate and the embedded groove have several sets of fixing holes on one side.

[0013] In summary, this utility model has at least one of the following beneficial effects: 1. The robotic arm connection mechanism designed in this scheme, through the coordinated cooperation of the first and second connecting components, the snap-fit ​​structure between the first and second connecting components, and the precision drive of the adjusting turntable, enables the robotic arm to flexibly adjust its working posture in a multi-degree-of-freedom space. Driven by a motor transmission box, the adjusting turntable rotates, allowing the second connecting component to adjust its angle relative to the first connecting component. This ensures that the robotic arm maintains optimal contact between the end effector and the workpiece under different spatial positions and working angles. It can maintain high-precision operation in various work scenarios such as welding, handling, and assembly, achieving adaptability to complex curved surfaces or multi-layered working environments, improving work quality and efficiency. Simultaneously, the snap-fit ​​cooperation between the U-shaped frame plate and the embedded groove, along with the fastening through fixing holes, ensures the reliability of the connection and facilitates disassembly and maintenance, thereby improving the maintenance convenience and overall service life of the robotic arm.

[0014] 2. The robotic arm connection mechanism designed in this scheme uses an adjusting screw connected to the bearing in the middle of the support base to engage with the first connecting component via a threaded connection. Driven by a forward and reverse motor, the screw rotates, enabling precise horizontal position adjustment of the first connecting component. Simultaneously, the sliding guide rails on both sides of the top of the support base engage with the sliding slider in the first connecting component. The sliding slider can slide smoothly along the guide rails, providing limiting support and guidance for the horizontal position of the robotic arm's bottom. This design allows for flexible adjustment of the robotic arm under different working positions and spatial conditions, achieving precise horizontal positioning and motion stability. This ensures smooth operation of the multi-segment transmission arm during operation, reducing swaying and deviation, and improving operational accuracy and reliability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the second connecting component of this utility model; Figure 3 This is a schematic diagram of the structure of the first connecting component of this utility model; Figure 4 This is a schematic diagram of the first connecting member structure of this utility model; Figure 5 This is a schematic diagram of the second connecting member of this utility model.

[0017] Explanation of reference numerals in the attached drawings: 1. Robotic arm body; 2. Arm connecting assembly; 3. Support base; 4. First connecting component; 5. Second connecting component; 6. Mounting chassis; 7. Hinge seat; 8. First transmission arm; 9. Second transmission arm; 10. Third transmission arm; 11. First connecting piece; 12. Second connecting piece; 13. Motor transmission box; 14. Adjusting turntable; 15. Embedded groove; 16. Moving slider; 17. Moving guide rail; 18. Adjusting screw; 19. Forward and reverse motor; 20. C-shaped frame plate; 21. Fixing hole. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example: Refer to Figures 1 to 5 This utility model provides an embodiment of a robotic arm arm connection mechanism, including a robotic arm body 1, an arm connection assembly 2 connected to the bottom of the robotic arm body 1, a support base 3 provided at the bottom of the arm connection assembly 2, a first connecting component 4, a second connecting component 5 provided at the top of the first connecting component 4, a mounting base 6, and a hinge seat 7 provided at the top of the mounting base 6. This robotic arm arm connection mechanism, through the coordinated cooperation of the first connecting component 4 and the second connecting component 5, enables the robotic arm to move flexibly in a multi-degree-of-freedom space. When the motor transmission box 13 receives a control signal, it can drive the adjusting turntable 14 to rotate, which can move the entire second connecting component 5 relative to the first connecting component 4. The design allows for angle adjustment, enabling the robotic arm to flexibly change its posture in space and adapt to different working angle requirements. One end of the robotic arm body 1 is connected to a first transmission arm 8, the end of the first transmission arm 8 away from the robotic arm body 1 is connected to a second transmission arm 9, and the end of the second transmission arm 9 away from the first transmission arm 8 is also connected to a third transmission arm 10. One end of the third transmission arm 10 is connected to the hinge seat 7. Through the coordinated use of the first transmission arm 8, the second transmission arm 9, and the third transmission arm 10, the robotic arm body 1 can transmit power and perform multi-angle and multi-directional motion adjustment, adapting to different positions and postures, and improving the operational flexibility and working range of the robotic arm.

[0020] The first connecting component 4 includes a first connecting member 11, and a second connecting member 12 is provided on the top of the first connecting member 11. The first connecting component 4, through the cooperation between the first connecting member 11 and the second connecting member 12, can construct a layered connection structure. This layered design not only provides sufficient mechanical strength to bear the weight of the subsequent transmission arm and the torque generated during operation, but also provides a stable mounting platform for the internal motor transmission box 13 and other adjustment components. The second connecting member 12 includes the motor transmission box 13, and the output end of the motor transmission box 13 drives... An adjustment turntable 14 is connected, and the adjustment turntable 14 matches the structure of the mounting base 6. The adjustment turntable 14 and the mounting base 6 are fixedly connected. An embedded groove 15 is provided in the middle of the motor transmission box 13. Movable sliders 16 are also provided on the bottom of both sides of the motor transmission box 13. The embedded groove 15 in the middle of the motor transmission box 13 and the movable sliders 16 on both sides of the bottom, through cooperation with the first connecting piece 11 and the support base 3, can realize the stable fixing, guidance and sliding support between the components, ensuring that the robotic arm maintains smooth movement during the adjustment process and avoids deviation or shaking.

[0021] Movable guide rails 17 are installed on both sides of the top of the support base 3. The movable guide rails 17 and the movable slider 16 are structurally matched and have a sliding fit. An adjusting screw 18 is connected to the middle of the support base 3 via a bearing. The adjusting screw 18 has a threaded fit with the first connecting member 11. A forward and reverse motor 19 is also provided at one end of the support base 3. The output end of the forward and reverse motor 19 is connected to the adjusting screw 18 for transmission. Through the sliding fit between the movable guide rails 17 and the movable slider 16, and the threaded fit between the adjusting screw 18 and the first connecting member 11, the adjusting screw 18 can be driven to rotate by the forward and reverse motor 19, thereby achieving precise horizontal position adjustment of the first connecting member 11. This enables precise horizontal movement of the robotic arm. For precise positioning and improved operational accuracy and adaptability, the first connecting member 11 includes an inverted bracket plate 20, which is structurally matched with the embedded groove 15. The inverted bracket plate 20 and the embedded groove 15 are in a snap-fit ​​engagement. Several sets of fixing holes 21 are provided on one side of both the inverted bracket plate 20 and the embedded groove 15. Through the snap-fit ​​structure between the inverted bracket plate 20 and the embedded groove 15, the first connecting member 11 and the second connecting member 12 can be quickly connected and disassembled, realizing convenient maintenance and improved reliability of the connecting parts of the robotic arm. With the fixing holes 21 respectively provided on one side of the inverted bracket plate 20 and the embedded groove 15, bolts or other fasteners can be passed through these fixing holes 21 to further enhance the stability of the connection and prevent loosening or displacement during the movement of the robotic arm.

[0022] Working Principle: The robotic arm connection mechanism designed in this scheme achieves flexible movement of the robotic arm in a multi-degree-of-freedom space through the coordinated cooperation of the first connecting component 4 and the second connecting component 5. The first connecting component 4 includes a first connecting piece 11 and a second connecting piece 12. The first connecting piece 11 is a U-shaped frame plate 20, the top of which is connected to the second connecting piece 12. The second connecting piece 12 includes a motor transmission box 13. The output end of the motor transmission box 13 is connected to an adjusting turntable 14. The adjusting turntable 14 matches the structure of the mounting chassis 6 in the second connecting component 5 and is stably connected through a fixed connection. When the motor transmission box 13 receives a control signal, it drives the adjusting turntable 14 to rotate. The rotation causes the entire second connecting component 5 to adjust its angle relative to the first connecting component 4. This design allows the robotic arm to flexibly change its posture in space to adapt to different working angle requirements. For example, when welding complex curved surfaces, the robotic arm can be rotated to ensure that the welding tool always maintains the optimal contact angle with the workpiece surface, thereby ensuring welding quality. In addition, the U-shaped frame plate 20 of the first connecting component 11 and the embedded groove 15 of the second connecting component 12 are engaged by a snap-fit ​​and secured by a fixing hole 21. This connection method not only ensures reliable connection between components but also facilitates quick disassembly and adjustment when needed, greatly improving the maintenance convenience of the robotic arm.

[0023] The robotic arm connection mechanism designed in this scheme uses an adjusting screw 18 connected to the bearing in the middle of the support base 3. This adjusting screw 18 is threadedly engaged with the first connecting member 11 and is driven to rotate by a forward and reverse motor 19. This allows for precise horizontal position adjustment of the first connecting member 11. This is achieved through the cooperation of the movable guide rails 17 on both sides of the top of the support base 3 and the movable slider 16 in the first connecting member 4. The movable slider 16 slides smoothly along the movable guide rails 17, which can limit the horizontal position of the bottom of the robotic arm, keeping the arm connection assembly 2 stable during the movement and adjustment process and preventing deviation or shaking. This horizontal adjustment function can cope with different working positions and space constraints, improving work efficiency and the overall stability and reliability of the robotic arm.

[0024] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A robotic arm arm connection mechanism, comprising a robotic arm body (1), characterized in that: The bottom of the robotic arm body (1) is connected to an arm connection assembly (2), and the bottom of the arm connection assembly (2) is also provided with a support base (3). The arm connection assembly (2) includes a first connecting component (4), and the top of the first connecting component (4) is provided with a second connecting component (5). The second connecting component (5) includes a mounting chassis (6), and a hinge seat (7) is provided on the top of the mounting chassis (6).

2. The robotic arm connection mechanism according to claim 1, characterized in that: One end of the robotic arm body (1) is connected to a first transmission arm (8), and the end of the first transmission arm (8) away from the robotic arm body (1) is connected to a second transmission arm (9). The end of the second transmission arm (9) away from the first transmission arm (8) is also connected to a third transmission arm (10). One end of the third transmission arm (10) is connected to the hinge seat (7).

3. The robotic arm connection mechanism according to claim 2, characterized in that: The first connecting component (4) includes a first connector (11), and a second connector (12) is provided on the top of the first connector (11).

4. The robotic arm connecting mechanism according to claim 3, characterized in that: The second connecting member (12) includes a motor transmission box (13), the output end of which is connected to an adjusting turntable (14). The adjusting turntable (14) is structurally matched with the mounting chassis (6), and the adjusting turntable (14) and the mounting chassis (6) are fixedly connected. An embedded groove (15) is provided in the middle of the motor transmission box (13), and movable sliders (16) are respectively provided on the bottom of both sides of the motor transmission box (13).

5. The robotic arm connection mechanism according to claim 1, characterized in that: The support base (3) is equipped with movable guide rails (17) on both sides of the top. The movable guide rails (17) and the movable slider (16) are structurally matched. The movable guide rails (17) and the movable slider (16) are in sliding fit. The middle part of the support base (3) is connected to an adjusting screw (18) through a bearing. The adjusting screw (18) and the first connecting piece (11) are in thread fit. One end of the support base (3) is also provided with a forward and reverse motor (19). The output end of the forward and reverse motor (19) is connected to the adjusting screw (18) in a transmission connection.

6. The robotic arm connecting mechanism according to claim 5, characterized in that: The first connector (11) includes a U-shaped frame plate (20), which is matched with the embedded groove (15) structure. The U-shaped frame plate (20) and the embedded groove (15) are in a snap-fit ​​fit. Several sets of fixing holes (21) are provided on one side of both the U-shaped frame plate (20) and the embedded groove (15).

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