A robotic arm joint adjustment mechanism

Abstract

This utility model discloses a robotic arm joint adjustment mechanism, belonging to the field of robotic arm technology. It includes a first arm body with a groove on one side. A rotating shaft is rotatably mounted within the groove. A connecting block is fixedly sleeved on the side wall of the rotating shaft. A second arm body is fixedly connected to the connecting block on the side away from the first arm body. A mounting frame is fixedly mounted on one side of the first arm body, with a sealing plate on the side away from the first arm body. One end of the rotating shaft rotatably extends into the mounting frame. A drive assembly is located on the side wall of the end of the rotating shaft that extends through the mounting frame. A protective frame is located on one side of the mounting frame, extending into the mounting frame. A wind-blowing assembly is located within the protective frame. The second arm body is driven by the drive assembly. A first reduction motor drives a worm gear to rotate, which in turn drives a worm wheel. The worm wheel drives the rotating shaft and the second arm body. The worm gear can drive the worm wheel, but the worm wheel cannot drive the worm gear, thus helping to maintain the stability of the second arm body after rotation.

Description

Technical Field

[0001] This utility model relates to the field of robotic arm technology, and more specifically, to a robotic arm joint adjustment mechanism. Background Technology

[0002] A robotic arm is a complex system characterized by high precision, multiple inputs and outputs, high nonlinearity, and strong coupling. Due to its unique operational flexibility, it has been widely used in fields such as industrial assembly and safety and explosion protection. The joints of a robotic arm are driven by a drive structure.

[0003] Patent application number 202222527090.2 discloses a multi-angle drive device for a robotic arm joint, including a base plate. An annular compartment is fixedly connected to the top of the base plate. A support rod is rotatably connected inside the annular compartment. A first rotating arm is rotatably connected inside the support rod. A second rotating arm is rotatably connected inside the first rotating arm. A rotating assembly is disposed inside the annular compartment. Adjustment components are disposed inside both the support rod and the first rotating arm. A clamping assembly is disposed on the right side of the second rotating arm. The rotating assembly includes a first motor fixedly connected to the inner bottom wall of the annular compartment. This invention allows the support rod to rotate via the rotating assembly, and the angles of the first and second rotating arms can be adjusted via the two adjustment components, providing the advantage of flexible multi-angle adjustment for the robotic arm and thus improving work efficiency.

[0004] Regarding the aforementioned technologies, the rotating component can drive the support rod to rotate, and the angles of the first and second rotating arms can be adjusted by two adjusting components, which helps to improve the flexibility of the equipment rotation. However, the structures in this application are all directly connected by a motor without any restrictions. When the equipment is rotating while holding a heavy object, the first or second rotating arm may rotate due to the weight of the object, thereby reducing the stability of the equipment holding the object. Utility Model Content

[0005] To solve the above problems, this utility model provides a robotic arm joint adjustment mechanism, which adopts the following technical solution:

[0006] A robotic arm joint adjustment mechanism includes a first arm body, a groove on one side of the first arm body, a rotating shaft rotatably mounted in the groove, a connecting block fixedly sleeved on the side wall of the rotating shaft, a second arm body fixedly connected to the connecting block on the side away from the first arm body, a mounting frame fixedly mounted on one side of the first arm body, a sealing plate on the side of the mounting frame away from the first arm body, one end of the rotating shaft rotatably penetrating into the mounting frame, a drive assembly on the side wall of the end of the rotating shaft penetrating the mounting frame, a protective frame on one side of the mounting frame, the protective frame extending into the mounting frame, and a wind blowing assembly inside the protective frame.

[0007] By adopting the above technical solution, the second arm and the first arm are assembled by a pivot. A drive component is provided on the side wall of one end of the pivot. The second arm is rotated by the drive component, which can adjust the direction of the second arm. A protective frame is provided on one side of the mounting frame. A wind blowing component is provided inside the protective frame. The wind blowing component generates airflow inside the mounting frame, which can dissipate heat.

[0008] Furthermore, the drive assembly includes a worm gear fixedly sleeved on the side wall of one end of the mounting frame through the rotating shaft, a worm rotatably mounted inside the mounting frame, the worm and the worm gear meshing, a driven gear fixedly sleeved on the lower side wall of the worm, a first reduction motor provided on the inner wall of the bottom end of the mounting frame, and a drive gear fixedly sleeved on the side wall of the output shaft of the first reduction motor, the drive gear and the driven gear meshing.

[0009] By adopting the above technical solution, the first reduction motor drives the drive gear to rotate, the drive gear drives the driven gear to rotate, the driven gear drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the rotating shaft to rotate, the rotating shaft drives the connecting block to rotate, and the connecting block drives the second arm to rotate. This can adjust the angle of the second arm. Moreover, the worm can drive the worm wheel to rotate, but the worm wheel cannot drive the worm to rotate, which helps to maintain the stability of the second arm after it rotates.

[0010] Furthermore, the air blowing assembly includes a mounting plate fixedly installed inside the protective frame. A second geared motor is provided on the side of the mounting plate near the mounting frame. Fan blades are fixedly sleeved on the side wall of the output shaft of the second geared motor. Multiple holes distributed in a rectangular array are opened on the side of the protective frame away from the mounting frame. Multiple heat dissipation holes distributed in a rectangular array are opened on the side of the mounting frame away from the protective frame.

[0011] By adopting the above technical solution, the fan blades are driven to rotate by the second geared motor to generate wind. The wind blows into the mounting frame, thereby allowing the heat inside the mounting frame to be discharged through the heat dissipation holes, which can achieve the function of heat dissipation.

[0012] Furthermore, a protective net is provided inside the protective frame on the side closest to the mounting frame, and dustproof cotton is provided on the opposite side of both the mounting frame and the protective frame.

[0013] By adopting the above technical solution, a protective net is installed inside the protective frame to protect the second geared motor and the fan blades. Dustproof cotton is installed on the opposite side of the mounting frame and the protective frame, which helps to prevent dust from entering the protective frame and the mounting frame through holes and heat dissipation holes, thus achieving a dustproof effect. This also helps to prevent dust from adhering to the drive gear, driven gear, worm gear and worm sidewall, and helps to maintain the transmission effect of the equipment.

[0014] Furthermore, four symmetrically distributed inserts are fixedly installed on the side of the sealing plate near the first arm body, and slots matching the inserts are provided on the side of the mounting frame away from the first arm body.

[0015] By adopting the above technical solution, the sealing plate and the mounting frame are fixed together with fasteners of existing technology. When installing the sealing plate, the worker aligns the sealing plate with the opposite side of the mounting frame, so that the insert block installed on one side of the sealing plate engages with the slot opened on one side of the mounting frame. The engagement of the insert block and the slot serves to position the sealing plate, which is convenient for subsequent fixing. The sealing plate and the mounting frame are set separately, which makes it convenient to disassemble the sealing plate to inspect the internal structure of the mounting frame.

[0016] Furthermore, two symmetrically distributed frames are slidably installed on the inner wall of the bottom end of the mounting frame. Each frame contains a desiccant. Each of the two frames has a top plate at its top. Each top plate has multiple through holes arranged in a rectangular array. The two top plates and the frames on the same side are fixed together by bolts.

[0017] By adopting the above technical solution, the installation frame is provided with a frame body, and a desiccant is provided inside the frame body to absorb the moisture inside the installation frame and achieve the drying effect. A top plate is provided on the top of the frame body, and the top plate is fixed to the frame body on the same side by bolts. The top plate has through holes to facilitate the desiccant to absorb moisture.

[0018] Furthermore, two symmetrically distributed limiting blocks are fixedly installed at the bottom of both frames. The inner wall of the bottom of the mounting frame is provided with a limiting groove that matches the limiting blocks, and the side walls of the limiting blocks are covered with rubber sleeves.

[0019] By adopting the above technical solution, the frame is positioned by engaging with the limiting block and the limiting groove opened on the bottom inner wall of the mounting frame. The side wall of the limiting block is fitted with a rubber sleeve, which helps to increase the friction between the limiting block and the limiting groove, thereby improving the stability of the frame installation.

[0020] In summary, this utility model has the following beneficial technical effects:

[0021] (1) In this utility model, the second arm is driven by a drive assembly, and the first reduction motor drives the worm to rotate. The worm drives the worm wheel to rotate, and the worm wheel drives the rotating shaft and the second arm to rotate. The worm can drive the worm wheel to rotate, but the worm wheel cannot drive the worm to rotate, which helps to maintain the stability of the second arm after it rotates.

[0022] (2) In this utility model, by setting up the wind blowing component, the second geared motor drives the fan blade to rotate to generate wind force, and the wind force blows into the mounting frame, thereby allowing the heat in the mounting frame to be discharged through the heat dissipation holes, which can play the role of heat dissipation. Attached Figure Description

[0023] Figure 1 This is a first-view structural schematic diagram of the robotic arm joint adjustment mechanism of this utility model;

[0024] Figure 2This is a structural schematic diagram of the robotic arm joint adjustment mechanism of this utility model from a second perspective;

[0025] Figure 3 This is an unfolded view of the sealing plate and mounting frame in the robotic arm joint adjustment mechanism of this utility model;

[0026] Figure 4 This utility model relates to a robotic arm joint adjustment mechanism. Figure 3 Enlarged view of A in the middle;

[0027] Figure 5 This utility model relates to a robotic arm joint adjustment mechanism. Figure 3 A magnified view of B in the middle.

[0028] Explanation of the labels in the diagram:

[0029] 1. First arm body; 2. Connecting block; 3. Second arm body; 4. Groove; 5. Mounting frame; 6. Sealing plate; 7. Protective frame; 8. Rotating shaft; 9. Worm gear; 10. Worm; 11. Driven gear; 12. Drive gear; 13. First geared motor; 14. Mounting plate; 15. Second geared motor; 16. Fan blade; 17. Frame body; 18. Top plate; 19. Limiting groove; 20. Limiting block. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," 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" and "second" 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 "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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] The following is in conjunction with the appendix Figure 1-5 The present invention will be described in further detail below.

[0034] Please see Figure 1-5 A robotic arm joint adjustment mechanism includes a first arm body 1, a groove 4 on one side of the first arm body 1, a rotating shaft 8 rotatably mounted in the groove 4, a connecting block 2 fixedly sleeved on the side wall of the rotating shaft 8, a second arm body 3 fixedly connected to the connecting block 2 away from the first arm body 1, an mounting frame 5 fixedly mounted on one side of the first arm body 1, a sealing plate 6 provided on the side of the mounting frame 5 away from the first arm body 1, one end of the rotating shaft 8 rotatably passing through the mounting frame 5, a drive assembly provided on the side wall of the rotating shaft 8 passing through the mounting frame 5, the drive assembly including a worm gear 9 fixedly sleeved on the side wall of the rotating shaft 8 passing through the mounting frame 5, a worm 10 rotatably mounted in the mounting frame 5, the worm 10 meshing with the worm gear 9, a driven gear 11 fixedly sleeved on the lower side wall of the worm 10, a first reduction motor 13 provided on the inner wall of the bottom end of the mounting frame 5, a drive gear 12 fixedly sleeved on the side wall of the output shaft of the first reduction motor 13, the drive gear 12 meshing with the driven gear 11.

[0035] The second arm 3 and the first arm 1 are assembled via a rotating shaft 8. The first reduction motor 13 drives the drive gear 12 to rotate, the drive gear 12 drives the driven gear 11 to rotate, the driven gear 11 drives the worm 10 to rotate, the worm 10 drives the worm wheel 9 to rotate, the worm wheel 9 drives the rotating shaft 8 to rotate, the rotating shaft 8 drives the connecting block 2 to rotate, and the connecting block 2 drives the second arm 3 to rotate. This can adjust the angle of the second arm 3. Furthermore, the worm 10 can drive the worm wheel 9 to rotate, but the worm wheel 9 cannot drive the worm 10 to rotate, which helps to maintain the stability of the second arm 3 after rotation.

[0036] A protective frame 7 is provided on one side of the mounting frame 5, extending into the mounting frame 5. A fan assembly is provided inside the protective frame 7, including a mounting plate 14 fixedly installed inside the protective frame 7. A second geared motor 15 is provided on the side of the mounting plate 14 near the mounting frame 5. A fan blade 16 is fixedly sleeved on the side wall of the output shaft of the second geared motor 15. Multiple holes arranged in a rectangular array are opened on the side of the protective frame 7 away from the mounting frame 5, and multiple heat dissipation holes arranged in a rectangular array are opened on the side of the mounting frame 5 away from the protective frame 7. The fan blade 16 is driven to rotate by the second geared motor 15 to generate wind. The wind blows into the mounting frame 5, thereby allowing the heat inside the mounting frame 5 to be discharged through the heat dissipation holes, thus achieving the function of heat dissipation.

[0037] The protective frame 7 has a protective net inside on the side near the mounting frame 5. The opposite sides of the mounting frame 5 and the protective frame 7 are equipped with dustproof cotton. The protective net inside the protective frame 7 serves to protect the second reduction motor 15 and the fan blade 16. The dustproof cotton on the opposite sides of the mounting frame 5 and the protective frame 7 helps to prevent dust from entering the protective frame 7 and the mounting frame 5 through holes and heat dissipation holes, thus achieving a dustproof effect. This also helps to prevent dust from adhering to the side walls of the drive gear 12, driven gear 11, worm gear 9 and worm 10, which helps to maintain the transmission effect of the equipment.

[0038] Four symmetrically distributed inserts are fixedly installed on the side of the sealing plate 6 near the first arm 1. The mounting frame 5 has slots that match the inserts on the side away from the first arm 1. The sealing plate 6 and the mounting frame 5 are fixed together by fasteners of existing technology. When installing the sealing plate 6, the operator aligns the sealing plate 6 with the opposite side of the mounting frame 5 so that the inserts installed on one side of the sealing plate 6 engage with the slots on one side of the mounting frame 5. The engagement of the inserts and slots serves to position the sealing plate 6, which is convenient for subsequent fixing. The sealing plate 6 and the mounting frame 5 are set separately, which facilitates the subsequent disassembly of the sealing plate 6 to inspect the internal structure of the mounting frame 5.

[0039] Two symmetrically distributed frame bodies 17 are slidably installed on the inner wall of the bottom end of the mounting frame 5. Each frame body 17 contains a desiccant. Each frame body 17 has a top plate 18 at its top. Each top plate 18 has multiple through holes arranged in a rectangular array. The two top plates 18 are fixed to the frame bodies 17 on the same side by bolts. The frame bodies 17 are located inside the mounting frame 5, and the desiccant inside the mounting frame 5 absorbs moisture and achieves a drying effect. The top plate 18 is located at the top of the frame body 17 and is fixed to the frame body 17 on the same side by bolts. The top plate 18 has through holes to facilitate the desiccant's absorption of moisture.

[0040] Two symmetrically distributed limiting blocks 20 are fixedly installed at the bottom of each of the two frames 17. The inner wall of the bottom of the mounting frame 5 is provided with a limiting groove 19 that matches the limiting block 20. The side walls of the limiting blocks 20 are covered with rubber sleeves. The frame 17 is positioned by engaging with the limiting blocks 20 and the limiting grooves 19 on the inner wall of the bottom of the mounting frame 5. The rubber sleeves on the side walls of the limiting blocks 20 help increase the friction between the limiting blocks 20 and the limiting grooves 19, thereby improving the stability of the frame 17 during installation.

[0041] The implementation principle of this utility model embodiment is as follows: When the device is in use, the second arm body 3 and the first arm body 1 are assembled through a rotating shaft 8. A drive assembly is provided on the side wall of one end of the rotating shaft 8. The first reduction motor 13 drives the drive gear 12 to rotate, the drive gear 12 drives the driven gear 11 to rotate, the driven gear 11 drives the worm 10 to rotate, the worm 10 drives the worm wheel 9 to rotate, the worm wheel 9 drives the rotating shaft 8 to rotate, the rotating shaft 8 drives the connecting block 2 to rotate, and the connecting block 2 drives the second arm body 3 to rotate. This can adjust the angle of the second arm body 3. The worm 10 can drive the worm wheel 9 to rotate, but the worm wheel 9 cannot drive the worm 10 to rotate, which helps to maintain the stability of the second arm body 3 after rotation. A protective frame 7 is provided on one side of the mounting frame 5. A wind blowing assembly is provided inside the protective frame 7. The wind blowing assembly generates wind force inside the mounting frame 5, which can play a role in heat dissipation.

[0042] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A mechanism for adjusting a joint of a robot arm, characterized by: The device includes a first arm body (1), a groove (4) is provided on one side of the first arm body (1), a rotating shaft (8) is rotatably installed in the groove (4), a connecting block (2) is fixedly sleeved on the side wall of the rotating shaft (8), a second arm body (3) is fixedly connected to the side of the connecting block (2) away from the first arm body (1), an installation frame (5) is fixedly installed on one side of the first arm body (1), a sealing plate (6) is provided on the side of the installation frame (5) away from the first arm body (1), one end of the rotating shaft (8) rotatably passes through into the installation frame (5), a driving component is provided on one side wall of the rotating shaft (8) passing through the installation frame (5), a protective frame (7) is provided on one side of the installation frame (5), the protective frame (7) extends into the installation frame (5), and a wind blowing component is provided in the protective frame (7).

2. The mechanism according to claim 1, wherein: The drive assembly includes a worm gear (9) fixedly sleeved on the rotating shaft (8) and passing through one end side wall of the mounting frame (5). A worm (10) is rotatably installed inside the mounting frame (5). The worm (10) and the worm gear (9) mesh. A driven gear (11) is fixedly sleeved on the lower side wall of the worm (10). A first reduction motor (13) is provided on the bottom inner wall of the mounting frame (5). A drive gear (12) is fixedly sleeved on the side wall of the output shaft of the first reduction motor (13). The drive gear (12) and the driven gear (11) mesh.

3. The mechanism according to claim 1, wherein: The air blowing assembly includes a mounting plate (14) fixedly installed inside the protective frame (7). The mounting plate (14) is provided with a second geared motor (15) on the side near the mounting frame (5). The output shaft sidewall of the second geared motor (15) is fixedly fitted with a fan blade (16). The protective frame (7) is provided with a plurality of holes arranged in a rectangular array on the side away from the mounting frame (5). The mounting frame (5) is provided with a plurality of heat dissipation holes arranged in a rectangular array on the side away from the protective frame (7).

4. The mechanism according to claim 3, wherein: The protective frame (7) has a protective net inside on the side near the mounting frame (5), and the mounting frame (5) and the protective frame (7) are both provided with dustproof cotton on the opposite side.

5. The mechanism according to claim 1, wherein: The sealing plate (6) has four symmetrically distributed inserts fixedly installed on the side near the first arm (1), and the mounting frame (5) has slots that match the inserts on the side away from the first arm (1).

6. The mechanism according to claim 1, wherein: The mounting frame (5) has two symmetrically distributed frames (17) that are slidably installed on the inner wall of its bottom end. Each frame (17) contains a desiccant. Each of the two frames (17) has a top plate (18) at its top. Each of the two top plates (18) has multiple through holes arranged in a rectangular array. The two top plates (18) and the frame (17) on the same side are fixed together by bolts.

7. The mechanism according to claim 6, wherein: Two symmetrically distributed limiting blocks (20) are fixedly installed at the bottom of each of the two frames (17). The inner wall of the bottom of the mounting frame (5) is provided with a limiting groove (19) that matches the limiting block (20). The side walls of the limiting block (20) are covered with rubber sleeves.

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