CN217168569U - Bearing rotating mechanism of low-torque mechanical arm - Google Patents
Bearing rotating mechanism of low-torque mechanical arm Download PDFInfo
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- CN217168569U CN217168569U CN202220806352.6U CN202220806352U CN217168569U CN 217168569 U CN217168569 U CN 217168569U CN 202220806352 U CN202220806352 U CN 202220806352U CN 217168569 U CN217168569 U CN 217168569U
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- threaded rod
- rotating shaft
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- mechanical arm
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- 230000003139 buffering effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
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Abstract
The utility model discloses a bearing rotating mechanism of low-torque mechanical arm, belonging to the technical field of mechanical arm, comprising a first fixed part and a second fixed part, wherein the first fixed part and the second fixed part are symmetrically distributed, a rotating shaft is rotatably arranged between the first fixed part and the second fixed part, a first motor is fixedly arranged at one end of the first fixed part, which is far away from the rotating shaft, and a supporting pipe is fixedly arranged at one end of the second fixed part, which is far away from the rotating shaft; a rocker arm connecting pipe is integrally constructed on the rotating shaft, the circle centers of the first fixing part and the second fixing part are arranged in a penetrating manner, a driving gear is fixedly installed on an output shaft of the first motor, and a driven gear meshed with the driving gear is fixedly installed at one end, facing the first motor, of the rotating shaft; the end face of the rotating shaft facing the second fixing part is provided with a connecting groove. This bearing slewing mechanism of low moment arm promotes the support intensity of bearing, reduces the gravity damage.
Description
Technical Field
The utility model belongs to the technical field of the arm, especially, relate to a bearing slewing mechanism of low moment arm.
Background
The mechanical arm is a complex system with high precision, multiple inputs and multiple outputs, high nonlinearity and strong coupling. The mechanical arm is a complex system and has uncertainties such as parameter perturbation, external interference, unmodeled dynamics and the like. Therefore, uncertainty exists in a modeling model of the mechanical arm, and for different tasks, the motion trail of the joint space of the mechanical arm needs to be planned, so that the tail end pose is formed by cascading.
The mechanical arm is widely applied to various industrial productions depending on the flexible angle adjusting range of the mechanical arm, but the bearing rotating part of the mechanical arm is lack of support, so that the bearing rotating part is easily damaged when a workpiece with larger weight is hoisted, and the service life is shortened.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving prior art, the bearing of arm rotates the position and lacks the support, so when hoisting the great work piece of weight, damage easily to the bearing and rotate the position, lead to the problem that life reduces, and the bearing slewing mechanism of a low moment arm that proposes.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a bearing rotating mechanism of a low-torque mechanical arm comprises a first fixing part and a second fixing part, wherein the first fixing part and the second fixing part are symmetrically distributed, a rotating shaft is rotatably arranged between the first fixing part and the second fixing part, a first motor is fixedly arranged at one end, away from the rotating shaft, of the first fixing part, and a supporting pipe is fixedly arranged at one end, away from the rotating shaft, of the second fixing part;
a rocker arm connecting pipe is integrally constructed on the rotating shaft, the circle centers of the first fixing part and the second fixing part are arranged in a penetrating manner, a driving gear is fixedly installed on an output shaft of the first motor, and a driven gear meshed with the driving gear is fixedly installed at one end, facing the first motor, of the rotating shaft;
the rotating shaft has seted up the spread groove on the terminal surface towards the second fixed part, the threaded rod is installed to the internal thread of spread groove, the threaded rod deviate from with the junction of spread groove stretch into to the inside of stay tube, the fluting that supplies the threaded rod to pass is seted up towards the centre of a circle department of second fixed part to the stay tube.
Benefit from the cooperation of stay tube and second fixed part and can effectively support the arm that needs support after rotating for the arm can have higher steadiness when stall carries out the hoist and mount of heavy work piece.
Preferably, the threaded rod stretches into the mounting panel is installed to the inside one end of supporting tube, the mounting panel is disc structure, and offers the inner caulking groove that supplies the threaded rod embedding towards the face of threaded rod, and horizontal symmetry has seted up two sets of shifting chutes that correspond with the threaded rod axis of rotation on the inner wall of inner caulking groove.
Thanks to the matching connection of the threaded rod and the rotating shaft, the rotating shaft has the effect of supporting and fixing.
Preferably, moving blocks are slidably mounted in the moving grooves and are symmetrically distributed on the outer wall of the threaded rod.
Thanks to the arrangement of the moving block, the threaded rod has a limiting effect when sliding.
Preferably, the threaded rod stretches into the inside one end of mounting panel still with the one end fixed connection of spring, the inner wall of the other end fixed connection mounting panel of spring.
Thanks to the arrangement of the spring, the threaded rod has a buffering effect before being connected with the connecting groove.
Preferably, one end of the mounting plate, which is far away from the threaded rod, is rotatably connected with a moving plate, and the moving plate is slidably mounted inside the supporting tube.
Thanks to the arrangement of the mounting plate, the threaded rod can move in a buffering way and can move transversely.
Preferably, the one end fixed mounting that the movable plate deviates from the mounting panel has the second motor, the second motor passes through transmission shaft and mounting panel fixed connection, movable plate and telescopic cylinder fixed connection, telescopic cylinder horizontal installation is inside the support tube.
The movable plate has the function of approaching or departing from the rotating shaft due to the arrangement of the telescopic cylinder.
Preferably, the inner walls of the first fixing portion and the second fixing plate are respectively provided with a bearing rotatably connected with the rotating shaft.
To sum up, the utility model discloses a technological effect and advantage: this bearing slewing mechanism of low moment arm, the arm that needs support after can effectively rotating through the cooperation of stay tube with the second fixed part supports, make the arm can have higher steadiness when the stall carries out the hoist and mount of heavy work piece, make the use strength of arm higher, and reduced the crushing of gravity to slew bearing department, effectively prolong the life of arm, satisfy the processing demand of different enterprises, through threaded rod and movable block, the cooperation of shifting chute and spring makes toughness have when being connected the support with the rotation axis, and then make being connected of threaded rod and rotation axis more stable.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the structure of the present invention in a separated state;
FIG. 3 is a schematic view of an installation structure of a second fixing portion and a moving plate;
fig. 4 is an enlarged schematic view of a portion a in fig. 3.
In the figure: 1. a first motor; 2. a first fixed part; 3. a rocker arm connecting pipe; 4. a rotating shaft; 5. a second fixed part; 6. supporting a tube; 7. a drive gear; 8. a driven gear; 9. a telescopic cylinder; 10. a threaded rod; 11. moving the plate; 12. connecting grooves; 13. a spring; 14. mounting a plate; 15. a moving groove; 17. a moving block; 18. a second motor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1, a bearing rotating mechanism of a low-torque mechanical arm includes a first fixing portion 2 and a second fixing portion 5, and is characterized in that the first fixing portion 2 and the second fixing portion 5 are symmetrically distributed, a rotating shaft 4 is rotatably installed between the first fixing portion 2 and the second fixing portion 5, a first motor 1 is fixedly installed at one end of the first fixing portion 2 departing from the rotating shaft 4, and a supporting tube 6 is fixedly installed at one end of the second fixing portion 5 far away from the rotating shaft 4. The inner walls of the first fixed part 2 and the second fixed plate are both provided with bearings which are rotatably connected with the rotating shaft 4. The first motor 1 drives the driving gear 7 to rotate, and drives the rotating shaft 4 to rotate.
Referring to fig. 1 and 2, a rocker arm connecting pipe 3 is integrally formed on a rotating shaft 4, the centers of circles of a first fixing portion 2 and a second fixing portion 5 are both arranged in a penetrating manner, a driving gear 7 is fixedly mounted on an output shaft of a first motor 1, and a driven gear 8 meshed with the driving gear 7 is fixedly mounted at one end of the rotating shaft 4 facing the first motor 1. The first motor 1 drives the driving gear 7 to rotate, and then the driven gear 8 meshed with the driving gear 7 rotates along with the driving gear, and the driven gear 8 drives the rotating shaft 4 to rotate.
Referring to fig. 3 and 4, a connecting groove 12 is formed in the end surface, facing the second fixing portion 5, of the rotating shaft 4, a threaded rod 10 is installed in the connecting groove 12 through internal threads, the threaded rod 10 deviates from the connecting position with the connecting groove 12 and extends into the supporting tube 6, and a groove for the threaded rod 10 to penetrate through is formed in the position, facing the center of the circle of the second fixing portion 5, of the supporting tube 6. The threaded rod 10 stretches into the inside one end of stay tube 6 and installs mounting panel 14, and mounting panel 14 is disc-shaped structure, and offers the embedded groove that supplies the threaded rod 10 to imbed towards the face of threaded rod 10, and horizontal symmetry is seted up two sets of moving grooves 15 that correspond with threaded rod 10 rotation axis 4 to on the inner wall of embedded groove. The moving blocks 17 are slidably mounted in the moving grooves 15, and the moving blocks 17 are symmetrically distributed on the outer wall of the threaded rod 10. One end of the threaded rod 10 extending into the mounting plate 14 is fixedly connected with one end of the spring 13, and the other end of the spring 13 is fixedly connected with the inner wall of the mounting plate 14. The end of the mounting plate 14 away from the threaded rod 10 is rotatably connected with a moving plate 11, and the moving plate 11 is slidably mounted inside the support tube 6. When the threaded rod 10 contacts the rotating shaft 4 but does not enter the connecting groove 12, the moving plate 11 continues to keep moving, and the threaded rod 10 can keep idling by means of the cooperation of the spring 13, the moving block 17 and the moving groove 15.
Referring to fig. 3 and 4, a second motor 18 is fixedly installed at one end of the moving plate 11 away from the mounting plate 14, the second motor 18 is fixedly connected with the mounting plate 14 through a transmission shaft, the moving plate 11 is fixedly connected with the telescopic cylinder 9, and the telescopic cylinder 9 is horizontally installed inside the supporting tube 6. The threaded rod 10 can be rotationally connected to the rotary shaft 4 by rotation of the second motor 18.
The working principle is as follows: when the rocker arm is used, the rocker arm is arranged in the rocker arm connecting pipe 3, the first motor 1 is started to drive the driving gear 7 to rotate, the driven gear 8 meshed with the driving gear 7 rotates along with the driving gear, the driven gear 8 drives the rotating shaft 4 to rotate, the rotating shaft 4 rotates between the first fixing part 2 and the second fixing part 5, and the rocker arm rotates to carry out operation, when the rocker arm needs to fix and supports a large-sized workpiece, the movable plate 11 is pushed towards the rotating shaft 4 direction through the telescopic cylinder 9, the second motor 18 is started, the second motor 18 drives the mounting plate 14 to rotate, the mounting plate 14 drives the threaded rod 10 to rotate, the threaded rod 10 extends along the supporting pipe 6 to move towards the second fixing part 5, and after the threaded rod 10 is contacted with the rotating shaft 4 in the second fixing part 5, the threaded rod 10 is in threaded connection towards the connecting groove 12 formed in the rotating shaft 4, because the rotation angle of the rotating shaft 4 is not fixed, the threaded rod 10 can not be directly inserted into the rotated connecting groove 12, when the threaded rod 10 contacts the connecting groove 12, the threaded rod cannot directly enter the connecting groove 12, at the moment, the spring 13 contracts back, so that the threaded rod 10 has certain idle time, the moving block 17 on the threaded rod 10 slides along the moving groove 15 to press the spring 13 until the threaded rod 10 rotates to be connected with the thread on the inner wall of the connecting groove 12 and enters the connecting groove 12, when the threaded rod 10 contacts the rotating shaft 4 but does not enter the connecting groove 12, the moving plate 11 continues to move, the threaded rod 10 can keep idle rotation by virtue of the cooperation of the spring 13, the moving block 17 and the moving groove 15, when the threaded rod 10 completely enters the connecting groove 12, the rotating shaft 4 obtains a supporting force, and the telescopic cylinder 9 extends to the end, the rocker arm can be supported, when the mechanical arm supports a large workpiece, the bearing force of the rotating shaft 4 is reduced, the gravity load is reduced, when the mechanical arm needs to continue to rotate, the second motor 18 is driven reversely to rotate, the threaded rod 10 is withdrawn from the inside of the connecting groove 12, the telescopic cylinder 9 is also contracted, the rotating shaft 4 has a rotating function, and the bearing rotating mechanism of the low-torque mechanical arm improves the support strength of a bearing and reduces gravity damage.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. A bearing rotating mechanism of a low-torque mechanical arm comprises a first fixing part (2) and a second fixing part (5), and is characterized in that the first fixing part (2) and the second fixing part (5) are symmetrically distributed, a rotating shaft (4) is rotatably arranged between the first fixing part (2) and the second fixing part (5), a first motor (1) is fixedly arranged at one end, deviating from the rotating shaft (4), of the first fixing part (2), and a supporting pipe (6) is fixedly arranged at one end, far away from the rotating shaft (4), of the second fixing part (5);
the rocker arm connecting pipe (3) is integrally constructed on the rotating shaft (4), the circle centers of the first fixing part (2) and the second fixing part (5) are arranged in a penetrating manner, a driving gear (7) is fixedly installed on an output shaft of the first motor (1), and a driven gear (8) meshed with the driving gear (7) is fixedly installed at one end, facing the first motor (1), of the rotating shaft (4);
connecting groove (12) have been seted up on rotation axis (4) towards the terminal surface of second fixed part (5), threaded rod (10) are installed to the inside screw thread of connecting groove (12), threaded rod (10) deviate from with the junction of connecting groove (12) stretch into to the inside of stay tube (6), the fluting that supplies threaded rod (10) to pass is seted up in the centre of a circle department of stay tube (6) towards second fixed part (5).
2. The bearing rotating mechanism of the low-torque mechanical arm as claimed in claim 1, wherein the mounting plate (14) is mounted at one end of the threaded rod (10) extending into the supporting tube (6), the mounting plate (14) is of a disc-shaped structure, an embedded groove for embedding the threaded rod (10) is formed in the surface of the threaded rod (10), and two sets of moving grooves (15) corresponding to the rotating shaft (4) of the threaded rod (10) are horizontally and symmetrically formed in the inner wall of the embedded groove.
3. The bearing rotating mechanism of the low-torque mechanical arm as claimed in claim 2, wherein moving blocks (17) are slidably mounted inside the moving grooves (15), and the moving blocks (17) are symmetrically distributed on the outer wall of the threaded rod (10).
4. A bearing rotating mechanism of a low-torque mechanical arm as claimed in claim 2, wherein one end of the threaded rod (10) extending into the mounting plate (14) is fixedly connected with one end of the spring (13), and the other end of the spring (13) is fixedly connected with the inner wall of the mounting plate (14).
5. A bearing rotation mechanism of a low-torque mechanical arm as claimed in claim 2, characterized in that the end of the mounting plate (14) far away from the threaded rod (10) is rotatably connected with a moving plate (11), and the moving plate (11) is slidably mounted inside the supporting tube (6).
6. The bearing rotating mechanism of the low-torque mechanical arm is characterized in that a second motor (18) is fixedly mounted at one end, away from the mounting plate (14), of the moving plate (11), the second motor (18) is fixedly connected with the mounting plate (14) through a transmission shaft, the moving plate (11) is fixedly connected with a telescopic cylinder (9), and the telescopic cylinder (9) is horizontally mounted inside the supporting tube (6).
7. The bearing rotating mechanism of a low-torque mechanical arm as claimed in claim 1, wherein the bearings rotatably connected with the rotating shaft (4) are mounted on the inner walls of the first fixing portion (2) and the second fixing portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220806352.6U CN217168569U (en) | 2022-04-08 | 2022-04-08 | Bearing rotating mechanism of low-torque mechanical arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220806352.6U CN217168569U (en) | 2022-04-08 | 2022-04-08 | Bearing rotating mechanism of low-torque mechanical arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217168569U true CN217168569U (en) | 2022-08-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220806352.6U Active CN217168569U (en) | 2022-04-08 | 2022-04-08 | Bearing rotating mechanism of low-torque mechanical arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217168569U (en) |
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2022
- 2022-04-08 CN CN202220806352.6U patent/CN217168569U/en active Active
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