Dustproof lubricating joint of mechanical arm shaft body
By designing dust-proof ring and return spring structure in the joints of the axial body of the robot arm, the problem of dust affecting rotation and lubricant life is solved, and higher dust-proof ability and lubrication effect are achieved.
Patent Information
- Application Number
- CN202420612287.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2024-12-31
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The joints of the shaft body of the robot are exposed to the outside during rotation, causing dust to adhere to the rotation and reduce the service life of the lubricant, thereby affecting the lubricating effect.
A structure including connecting piece, reserved block, sliding rail, dustproof ring, and return spring is designed. The dustproof ring continuously wraps the joint position in the sliding rail during rotation to avoid dust entering, and keep dustproof through the return spring. The position of the ring.
It effectively improves the dustproof ability of the robotic arm joints, extends the service life of the lubricant, and maintains the lubricating effect.
Smart Images
Figure CN222270349U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of mechanical arm shaft connection, in particular to a mechanical arm shaft dustproof lubrication joint. Background Art
[0002] The robot arm axis joint refers to the joint part of the robot arm, which connects the various parts of the robot arm and allows it to rotate or bend. The axis joint is usually composed of a series of bearings, sleeves and transmission mechanisms, which can achieve precise position control and motion trajectory planning. It is one of the key components to achieve flexible movement of the robot arm;
[0003] A Chinese patent with publication number CN216372271U discloses a robotic arm joint structure, including a cross slider, a bearing support assembly, a sensor assembly and a motor module. The axial force and radial force of the joint that were originally directly borne by the torque sensor are changed to be borne by the bearing. Since the radial and axial stiffness of the bearing is very high, the stiffness of the joint is improved.
[0004] The joint structure of the robotic arm of the above patent will be exposed to the outdoors during rotation and use. When exposed to the outdoors, it will be exposed to external dust. The adhesion of dust will affect the rotation of the joint structure. The contact of dust will also cause the service life of the lubricant to be reduced, affecting the lubricating effect of the lubricant. Utility Model Content
[0005] The purpose of the utility model is to provide a dust-proof and lubricating joint for a robotic arm shaft. The dust-proof ring is rotated by pulling the dust-proof ring with two reset springs in different directions. The dust-proof ring can be reset by pulling. During the rotation and reset process, the dust-proof ring can continuously wrap the joint position to avoid dust contact, thereby solving the problems raised in the above-mentioned background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dustproof and lubricating joint of a robotic arm shaft, comprising a connecting plate, a second rotating connecting shaft is arranged in the middle of the connecting plate, a reserved block is arranged on one side of the front end of the connecting plate, and the reserved block is welded to the front end of the connecting plate, a sliding rail for sliding is arranged inside the reserved block, and a dustproof ring is arranged at the front end of the outside of the sliding rail.
[0007] Preferably, one end of the outer portion of the dustproof ring facing the reserved block is connected to the inner sliding groove of the sliding rail, and an embedding groove is provided on one side of the inner portion of the dustproof ring.
[0008] Preferably, an adjustment roller is provided at one end of the dustproof ring facing the robotic arm, two adjustment rollers are located between the dustproof ring and the robotic arm, a connecting frame is provided on one side between one end of the adjustment roller and the dustproof ring, one end of the connecting frame is welded and fixed to the dustproof ring, and the connecting frame and the adjustment roller are rotatably connected via a first rotating connecting shaft.
[0009] Preferably, a first sodium storage cavity is provided at the lower end of the reserved block, and a second sodium storage cavity is provided on one side of the reserved block, the first sodium storage cavity and the second sodium storage cavity both extend from the interior of the reserved block to the interior of the sliding rail, and the first sodium storage cavity and the second sodium storage cavity are both provided with a return spring, and both ends of the return spring are respectively welded and fixed to the reserved block and the dust ring.
[0010] Preferably, a limiting groove is provided on one side inside the dustproof ring, a limiting ring is provided on one side outside the limiting groove, and the outside of the limiting ring is connected to the internal sliding groove of the limiting groove.
[0011] Preferably, the other end of the dustproof ring is mirror-imaged with a reserved block, a sliding rail, a dustproof ring, an embedding groove, a connecting frame, an adjustment roller, a first sodium storage cavity, a second sodium storage cavity, a reset spring, a first rotating connecting shaft, a limiting ring and a limiting groove.
[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0013] 1. The motor output inside the device of the utility model causes the mechanical arm to rotate with the second rotating connecting axis as the center. During the rotation, the dust ring supported by the first sodium storage cavity and the second sodium storage cavity will be contacted. The rotation of the mechanical arm will push the dust ring and cause the dust ring to rotate in the sliding rail. The rotation of the dust ring in the sliding rail can allow the dust ring to continuously wrap around the joint position, thereby preventing the gap inside the joint from being exposed during the rotation of the mechanical arm using the joint part, preventing dust from directly entering from the gap and being retained in the joint, thereby improving the dustproof ability of the joint part. On the other hand, while preventing dust from entering by wrapping with the dust ring, the lubrication effect of the lubricant due to dust is prevented from being reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional diagram of the overall external structure of the utility model;
[0015] Figure 2 This is a three-dimensional diagram of the position relationship of the dustproof ring of the utility model;
[0016] Figure 3 It is a cross-sectional view of the internal structure of the reserved block of the utility model;
[0017] Figure 4 For the utility model Figure 3 A partial enlarged view of the middle A area;
[0018] Figure 5 This is a cross-sectional view of the internal structure of the sliding rail of the utility model;
[0019] Figure 6 For the utility model Figure 5 A partial enlarged view of area B in the middle.
[0020] In the figure: 1. connecting piece; 2. reserved block; 3. sliding rail; 4. dustproof ring; 5. embedded groove; 6. connecting frame; 7. adjusting roller; 8. first sodium storage chamber; 9. second sodium storage chamber; 10. reset spring; 11. first rotating connecting shaft; 12. second rotating connecting shaft; 14. limiting ring; 15. limiting groove. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0022] In order to solve the problem in the prior art that the joint structure of the mechanical arm is exposed to the outdoors during rotation and use, and is exposed to the outdoors and is exposed to external dust, the adhesion of dust will affect the rotation of the joint structure, and the contact of dust will also cause the service life of the lubricant to be reduced, affecting the lubricating effect of the lubricant, this embodiment provides the following technical solutions:
[0023] A mechanical arm shaft dustproof lubrication joint comprises a connecting piece 1, wherein a second rotating connecting shaft 12 is arranged in the middle of the connecting piece 1. Figure 5 and Figure 6 As shown, the second rotating connecting shaft 12 is connected to the two ends of the robot arm. When the robot arm is output and rotated by the motor, it rotates around the second rotating connecting shaft 12 as the center of the circle. The rotation can adjust the grab handle at one end of the robot arm. The use of the robot arm can be completed by adjusting the position of the grab handle.
[0024] In this embodiment, a reserved block 2 is provided at one side of the front end of the connecting piece 1, and the reserved block 2 is welded to the front end of the connecting piece 1, a sliding rail 3 for sliding is provided inside the reserved block 2, and a dustproof ring 4 is provided at the front end of the outer side of the sliding rail 3, such as Figure 1 , Figure 2 and Figure 3 As shown, the dustproof ring 4 can be used to wrap and protect the joint position to prevent dust from contacting the gap and affecting the lubrication effect. The end of the dustproof ring 4 facing the reserved block 2 is connected to the internal sliding slot of the sliding rail 3. The sliding slot connection allows the robot arm to push the dustproof ring 4 to rotate inside the sliding rail 3 during the rotation process, so as to keep the inside of the joint position continuously wrapped;
[0025] In this embodiment, an embedding groove 5 is provided on one side of the dustproof ring 4. Figure 1, Figure 2 and Figure 3 As shown, the two ends of the dust ring 4 can be fitted to one end of the robot arm by embedding the recess 5, and the fit can cause the robot arm to collide with the dust ring 4 when rotating, and the collision can cause the dust ring 4 to actively rotate and adapt to the current rotation angle of the robot arm;
[0026] In this embodiment, if Figure 3 and Figure 4 As shown, an adjustment roller 7 is provided at one end of the dustproof ring 4 facing the mechanical arm, and two adjustment rollers 7 are located between the dustproof ring 4 and the mechanical arm. The rotation of the mechanical arm will push the dustproof ring 4 through the adjustment rollers 7. A connecting frame 6 is provided on one side between one end of the adjustment roller 7 and the dustproof ring 4. One end of the connecting frame 6 is welded and fixed to the dustproof ring 4. The connecting frame 6 and the adjustment roller 7 are rotatably connected through a first rotating connecting shaft 11. After being pushed, the adjustment roller 7 will rotate with the first rotating connecting shaft 11 as the center of the circle, thereby reducing the friction coefficient between the mechanical arm and the dustproof ring 4.
[0027] In this embodiment, a first sodium storage cavity 8 is provided at the lower end of the reserved block 2, and a second sodium storage cavity 9 is provided at one side of the reserved block 2. Figure 3 and Figure 6 As shown, the first sodium storage cavity 8 and the second sodium storage cavity 9 are both extended from the inside of the reserved block 2 to the inside of the sliding rail 3, and the first sodium storage cavity 8 and the second sodium storage cavity 9 are both provided with a return spring 10, and the two ends of the return spring 10 are respectively welded and fixed to the reserved block 2 and the dust ring 4, and the welding connection of the second sodium storage cavity 9 can actively make the dust ring 4 return to its original position after rotation;
[0028] In this embodiment, if Figure 5 and Figure 6 As shown, a limiting groove 15 is provided on one side of the interior of the dustproof ring 4, and the limiting groove 15 is recessed inside the dustproof ring 4. A limiting ring 14 is provided on one side of the exterior of the limiting groove 15, and the exterior of the limiting ring 14 is connected to the internal sliding groove of the limiting groove 15. The connection of the sliding groove can prevent the dustproof ring 4 from rotating and falling off.
[0029] In this embodiment, the other end of the dustproof ring 4 is mirror-set with a reserved block 2, a sliding rail 3, a dustproof ring 4, an embedded groove 5, a connecting frame 6, an adjustment roller 7, a first sodium storage cavity 8, a second sodium storage cavity 9, a return spring 10, a first rotating connecting shaft 11, a limiting ring 14 and a limiting groove 15, such as Figure 1 and Figure 2 As shown, the mirror-image structure allows the joint to wrap both sides of the robotic arm, wrapping both sides of the joint at the same time, thereby improving the dust-proof effect of the joint position.
[0030] Working principle: When using the joint and assisting the use of the robotic arm, the output structure inside the robotic arm drives the robotic arm to rotate, and the robotic arm rotates in the embedded groove 5. The robotic arm will contact the adjustment roller 7 and push the dust ring 4 as it continues to rotate, so that the dust ring 4 rotates in the sliding rail 3. When the sliding rail 3 rotates, it will pull the reset spring 10 inside the first sodium storage cavity 8 and the second sodium storage cavity 9, and the resilience of the reset spring 10 will reset the dust ring 4.
[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A mechanical arm shaft dustproof lubrication joint, comprising a connecting piece (1), wherein a second rotating connecting shaft (12) is arranged in the middle of the connecting piece (1), characterized in that: A reserved block (2) is provided at one side of the front end of the connecting piece (1), and the reserved block (2) is welded to the front end of the connecting piece (1); a sliding rail (3) for sliding is provided inside the reserved block (2); and a dustproof ring (4) is provided at the front end outside the sliding rail (3).
2. The dust-proof lubricating joint of a mechanical arm shaft according to claim 1, characterized in that: One end of the dustproof ring (4) facing the reserved block (2) is connected to the internal sliding slot of the sliding rail (3), and one side of the interior of the dustproof ring (4) is provided with an embedding groove (5).
3. The mechanical arm shaft dust-proof lubrication joint according to claim 2, characterized in that: An adjustment roller (7) is provided at one end of the dustproof ring (4) facing the mechanical arm, and two adjustment rollers (7) are located between the dustproof ring (4) and the mechanical arm. A connecting frame (6) is provided on one side between one end of the adjustment roller (7) and the dustproof ring (4), and one end of the connecting frame (6) is welded and fixed to the dustproof ring (4).
4. The mechanical arm shaft dust-proof lubrication joint according to claim 3, characterized in that: A first sodium storage cavity (8) is provided at the lower end of the reserved block (2), and a second sodium storage cavity (9) is provided on one side of the reserved block (2). Both the first sodium storage cavity (8) and the second sodium storage cavity (9) extend from the inside of the reserved block (2) to the inside of the sliding rail (3).
5. The mechanical arm shaft dust-proof lubrication joint according to claim 4, characterized in that: A return spring (10) is disposed inside the first sodium storage chamber (8) and the second sodium storage chamber (9), and two ends of the return spring (10) are respectively welded and fixed to the reserved block (2) and the dustproof ring (4).
6. The mechanical arm shaft dust-proof lubrication joint according to claim 5, characterized in that: A limiting groove (15) is provided on one side inside the dustproof ring (4), a limiting ring (14) is provided on one side outside the limiting groove (15), and the outside of the limiting ring (14) is connected to the internal sliding groove of the limiting groove (15).
7. The mechanical arm shaft dust-proof lubrication joint according to claim 6, characterized in that: The connecting frame (6) and the adjusting roller (7) are rotationally connected via a first rotating connecting shaft (11).
8. The mechanical arm shaft dust-proof lubricating joint according to claim 7, characterized in that: The other end of the dustproof ring (4) is mirror-imaged with a reserved block (2), a sliding rail (3), a dustproof ring (4), an embedding groove (5), a connecting frame (6), an adjusting roller (7), a first sodium storage cavity (8), a second sodium storage cavity (9), a return spring (10), a first rotating connecting shaft (11), a limiting ring (14) and a limiting groove (15).