Four-degree-of-freedom mechanical arm joint lubricating device

Abstract

The utility model relates to the technical field of mechanical arms, and discloses a four-degree-of-freedom mechanical arm joint lubricating device which comprises a first mechanical arm, a second mechanical arm is arranged on one side of the first mechanical arm, a rotating shaft joint is arranged on one side of the second mechanical arm, and a third mechanical arm is arranged on one side of the rotating shaft joint. A mounting groove is formed in the rotating shaft joint, an arc-shaped block is fixedly connected to the inner wall of the mounting groove, a rotating column is arranged in the mounting groove, and an oil box is arranged in the rotating column. According to the four-degree-of-freedom mechanical arm joint lubricating device, a worker rotates a rotating column, the rotating column drives a pushing block to move, the pushing block makes contact with an arc-shaped block, and when the pushing block moves to the thick end of the arc-shaped block, the arc-shaped block extrudes the pushing block and drives an inserting rod to be inserted into an inserting hole to be fixed. And a worker can conveniently add or replace the oil box, so that the long-term lubrication effect on the equipment is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical arms, in particular to a joint lubrication device for a four-degree-of-freedom mechanical arm. Background Art

[0002] A robotic arm is a complex system with high precision, multiple inputs and outputs, high nonlinearity, and strong coupling. Due to its unique operational flexibility, it has been widely used in industrial assembly, safety and explosion protection, and other fields.

[0003] A Chinese patent discloses a four-degree-of-freedom robotic arm (authorization announcement number CN218614058U). This patented technology enables the action part to move freely in space through three rotating pairs and one mobile pair. At the same time, the parallel setting between each rotating pair and the coaxial setting of the mobile pair and the rotating pair enable the robotic arm to not only move freely in space, but also be folded and stored, and flexibly applied to various scenarios, enhancing the flexibility of the product.

[0004] In view of the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: traditional robotic arms do not have special lubrication devices. During long-term and high-intensity use of the robotic arms, the joints are prone to wear due to friction, resulting in reduced movement accuracy and may even cause failures. In addition, lack of lubrication will also cause increased noise and energy consumption during the operation of the robotic arms, further affecting their work efficiency and service life. Utility Model Content

[0005] The technical problem to be solved by the present invention is that the prior art has the disadvantage of no lubrication device, so we propose a four-degree-of-freedom robotic arm joint lubrication device.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a four-degree-of-freedom robotic arm joint lubrication device, comprising a first robotic arm, a second robotic arm is provided on one side of the first robotic arm, a pivot joint is provided on one side of the second robotic arm, a third robotic arm is provided on one side of the pivot joint, a mounting groove is provided inside the pivot joint, an arc block is fixedly connected to the inner wall of the mounting groove, a rotating column is provided inside the mounting groove, an oil box is provided inside the rotating column, adjustment grooves are provided at both ends of the rotating column, a through hole is provided at the bottom of the adjusting groove, a push block is slidably connected to the inside of the through hole, an insertion rod is fixedly connected to the side of the push block close to the oil box, and holes are provided on both sides of the oil box.

[0007] Preferably, the size of the insertion rod is adapted to the size of the insertion hole, and the surface of the insertion rod is slidably connected to the interior of the insertion hole.

[0008] Preferably, sliding grooves are provided on both sides of the interior of the adjustment groove, and sliding blocks are fixedly connected to both sides of the push block, and the surfaces of the sliding blocks are slidably connected to the interior of the sliding grooves.

[0009] Preferably, the bottom of the push block is fixedly connected to a force storage spring, and the bottom of the force storage spring is fixedly connected to the bottom end inside the adjustment slot.

[0010] Preferably, a sealing gasket is fixedly connected to one side of the rotating column close to the interior of the oil box.

[0011] Preferably, an annular block is fixedly connected to the inner wall of the mounting groove, and an annular groove is provided on the surface of the rotating column.

[0012] Preferably, thread grooves are provided at both ends of the rotating column, the front end of the rotating shaft joint is fixedly connected to an outer ring block, and the interior of the outer ring block is rotatably connected to a threaded rod.

[0013] The technical effects and advantages of this utility model are:

[0014] In the utility model, the staff rotates the rotating column, so that the rotating column drives the push block to move, and makes the push block contact with the arc block. When the push block moves to the thicker end of the arc block, the arc block squeezes the push block and drives the insertion rod to be inserted into the socket for fixation. Through the above arrangement, the staff can add or replace the oil box, thereby achieving long-term lubrication of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the installation slot of the utility model;

[0017] Figure 3 This is a schematic diagram of the rotating column structure of the present utility model;

[0018] Figure 4 This is a schematic diagram of the partial explosion structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the internal structure of the rotating column of the present utility model.

[0020] Legend: 1. First robotic arm; 2. Second robotic arm; 3. Rotating shaft joint; 4. Third robotic arm; 5. Mounting slot; 6. Oil box; 7. Adjustment slot; 8. Through hole; 9. Push block; 10. Insert rod; 11. Slider; 12. Slide slot; 13. Force storage spring; 14. Sealing gasket; 15. Ring block; 16. Ring groove; 17. Threaded rod; 18. Threaded groove; 19. Socket; 20. Arc block; 21. Rotating column; 22. Outer ring block. DETAILED DESCRIPTION

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show components related to the present invention.

[0022] Reference Figure 1 - Figure 5 As shown, the utility model provides a technical solution: a four-degree-of-freedom mechanical arm joint lubrication device, including a first mechanical arm 1, a second mechanical arm 2 is provided on one side of the first mechanical arm 1, a rotating shaft 3 is provided on one side of the second mechanical arm 2, a third mechanical arm 4 is provided on one side of the rotating shaft 3, a mounting groove 5 is provided inside the rotating shaft 3, an arc block 20 is fixedly connected to the inner wall of the mounting groove 5, a rotating column 21 is provided inside the mounting groove 5, an oil box 6 is provided inside the rotating column 21, adjustment grooves 7 are provided at both ends of the rotating column 21, and a through hole 8 is provided at the bottom of the adjusting groove 7 , a push block 9 is slidably connected to the inside of the through hole 8, and a plug rod 10 is fixedly connected to the side of the push block 9 close to the oil box 6. Sockets 19 are provided on both sides of the oil box 6. The staff rotates the rotating column 21 so that the rotating column 21 drives the push block 9 to move and makes the push block 9 contact with the arc block 20. When the push block 9 moves to the thicker end of the arc block 20, the arc block 20 squeezes the push block 9 and drives the plug rod 10 to be inserted into the socket 19 for fixation. Through the above arrangement, the staff can add or replace the oil box 6, thereby achieving long-term lubrication of the equipment.

[0023] Reference Figure 4 and Figure 5 As shown, in this embodiment: the size of the rod 10 is adapted to the size of the socket 19, and the surface of the rod 10 is slidably connected to the inside of the socket 19. By making the size of the rod 10 adapted to the size of the socket 19, the smooth movement of the component rod 10 inside the component socket 19 is ensured, thereby improving the operating efficiency of the entire device. In addition, this design also allows the component rod 10 to remain stable when subjected to external force, reducing wear caused by friction.

[0024] Reference Figure 4 and Figure 5 As shown, in this embodiment: slide grooves 12 are provided on both sides of the adjusting groove 7, and sliders 11 are fixedly connected to both sides of the push block 9. The surface of the slider 11 is slidably connected to the inside of the slide groove 12. When the staff moves the push block 9, the push block 9 drives the slider 11 to slide inside the slide groove 12. Through the above arrangement, precise control of the push block 9 is achieved. In addition, the sliding fit design between the slider 11 and the slide groove 12 ensures smooth operation, reduces friction, and thus extends the service life of the equipment.

[0025] Reference Figure 4 and Figure 5 As shown, in this embodiment: the bottom of the push block 9 is fixedly connected with a force storage spring 13, and the bottom of the force storage spring 13 is fixedly connected to the bottom end inside the adjusting groove 7, and makes the push block 9 contact the arc block 20. When the push block 9 moves to the thicker end of the arc block 20, the arc block 20 squeezes the push block 9, and the push block 9 squeezes the force storage spring 13 to compress and store force. When the staff moves the push block 9 to the thinner end of the arc block 20, the force storage spring 13 quickly pushes the push block 9 out under the action of the rebound force, and drives the insertion rod 10 to release the limit between it and the socket 19, so that the staff can install and disassemble it.

[0026] Reference Figure 4 and Figure 5 As shown, in this embodiment: the side of the rotating column 21 close to the interior of the oil box 6 is fixedly connected with the sealing gasket 14. The setting of the rotating column 21 close to the interior of the oil box 6 is fixedly connected with the sealing gasket 14, which ensures that a sealing area is formed between the rotating column 21 and the oil box 6, effectively preventing the leakage of liquid or gas. In addition, the material selection and design of the sealing gasket 14 take into account corrosion resistance and high temperature resistance to meet the requirements of different working environments.

[0027] Reference Figure 4 and Figure 5 As shown, in this embodiment: the inner wall of the mounting groove 5 is fixedly connected with an annular block 15, and an annular groove 16 is provided on the surface of the rotating column 21. When the staff rotates the rotating column 21, the rotating column 21 rotates along the trajectory of the annular block 15. Through the above arrangement, it can be ensured that the rotation of the rotating column 21 is smoother, and the noise and wear caused by friction are reduced. In addition, the arrangement of the annular groove 16 enables the rotating column 21 to fit closely with the annular block 15 during the rotation process, thereby improving the stability and service life of the overall structure.

[0028] Reference Figure 4 and Figure 5 As shown, in this embodiment: thread grooves 18 are provided at both ends of the rotating column 21, the front end of the rotating shaft joint 3 is fixedly connected to the outer ring block 22, and the inner part of the outer ring block 22 is rotatably connected to the threaded rod 17. In order to prevent the position of the rotating column 21 from shifting when the equipment is in operation, the staff rotates the threaded rod 17 so that the threaded rod 17 is rotated into the threaded groove 18 for fixation, thereby fixing the position of the rotating column 21.

[0029] Working principle: The staff rotates the rotating column 21, so that the rotating column 21 drives the push block 9 to move, and makes the push block 9 contact with the arc block 20. When the push block 9 moves to the thicker end of the arc block 20, the arc block 20 squeezes the push block 9 and drives the plug rod 10 to be inserted into the socket 19 for fixation. Through the above setting, the staff can add or replace the oil box 6, thereby achieving long-term lubrication of the equipment. By matching the size of the plug rod 10 with the size of the socket 19, the smooth movement of the component plug rod 10 inside the component socket 19 is ensured, thereby improving the operation efficiency of the entire device. In addition, this design also allows the component insertion rod 10 to remain stable when subjected to external force, reducing wear caused by friction. When the staff moves the push block 9, the push block 9 drives the slider 11 to slide inside the slide groove 12. Through the above arrangement, precise control of the push block 9 is achieved. In addition, the sliding fit design between the slider 11 and the slide groove 12 ensures smooth operation and reduces friction, thereby extending the service life of the equipment and making the push block 9 contact with the arc block 20. When the push block 9 moves to the thicker end of the arc block 20, the arc block 20 squeezes the push block 9. , the push block 9 squeezes the storage spring 13 to compress and store force. When the staff moves the push block 9 to the thinner end of the arc block 20, the storage spring 13 quickly pushes the push block 9 out under the action of the rebound force, and drives the insertion rod 10 to release the limit between it and the socket 19, so that the staff can install and disassemble it. The side of the rotating column 21 close to the inside of the oil box 6 is fixedly connected with the setting of the sealing gasket 14, which ensures that a sealing area is formed between the rotating column 21 and the oil box 6, effectively preventing the leakage of liquid or gas. In addition, the material selection and design of the sealing gasket 14 take into account corrosion resistance and high temperature resistance to adapt to different working conditions. In accordance with the requirements of the working environment, when the staff rotates the rotating column 21, the rotating column 21 rotates along the trajectory of the annular block 15. Through the above arrangement, it can be ensured that the rotation of the rotating column 21 is smoother, and the noise and wear caused by friction are reduced. In addition, the arrangement of the annular groove 16 enables the rotating column 21 to fit closely with the annular block 15 during the rotation process, thereby improving the stability and service life of the overall structure. In order to avoid the position of the rotating column 21 from shifting when the equipment is in operation, the staff rotates the threaded rod 17 so that the threaded rod 17 is rotated into the threaded groove 18 for fixation, thereby fixing the position of the rotating column 21.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A four-degree-of-freedom robotic arm joint lubrication device, comprising a first robotic arm (1), characterized in that: A second mechanical arm (2) is provided on one side of the first mechanical arm (1), a rotating shaft joint (3) is provided on one side of the second mechanical arm (2), a third mechanical arm (4) is provided on one side of the rotating shaft joint (3), a mounting groove (5) is provided inside the rotating shaft joint (3), an arc block (20) is fixedly connected to the inner wall of the mounting groove (5), a rotating column (21) is provided inside the mounting groove (5), an oil box (6) is provided inside the rotating column (21), an adjustment groove (7) is provided at both ends of the rotating column (21), a through hole (8) is provided at the bottom of the adjustment groove (7), a push block (9) is slidably connected inside the through hole (8), a plug rod (10) is fixedly connected to the side of the push block (9) close to the oil box (6), and a plug hole (19) is provided on both sides of the oil box (6).

2. The four-degree-of-freedom robotic arm joint lubrication device according to claim 1, characterized in that: The size of the insertion rod (10) is adapted to the size of the insertion hole (19), and the surface of the insertion rod (10) is slidably connected to the interior of the insertion hole (19).

3. The four-degree-of-freedom robotic arm joint lubrication device according to claim 1, characterized in that: Slide grooves (12) are provided on both sides of the adjusting groove (7), and sliders (11) are fixedly connected to both sides of the push block (9), and the surface of the slider (11) is slidably connected to the inside of the slide groove (12).

4. The four-degree-of-freedom robotic arm joint lubrication device according to claim 1, characterized in that: The bottom of the push block (9) is fixedly connected to a force storage spring (13), and the bottom of the force storage spring (13) is fixedly connected to the bottom end inside the adjustment slot (7).

5. The four-degree-of-freedom robotic arm joint lubrication device according to claim 1, characterized in that: A sealing gasket (14) is fixedly connected to one side of the rotating column (21) close to the interior of the oil box (6).

6. The four-degree-of-freedom robotic arm joint lubrication device according to claim 1, characterized in that: An annular block (15) is fixedly connected to the inner wall of the mounting groove (5), and an annular groove (16) is provided on the surface of the rotating column (21).

7. The four-degree-of-freedom robotic arm joint lubrication device according to claim 1, characterized in that: Both ends of the rotating column (21) are provided with threaded grooves (18), the front end of the rotating shaft section (3) is fixedly connected to an outer ring block (22), and the interior of the outer ring block (22) is rotatably connected to a threaded rod (17).

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