Industrial robot mechanical arm connecting device

Abstract

The industrial robot mechanical arm connecting device comprises a bearing table, a mechanical arm and a connecting disc, the mechanical arm is installed at the top of the bearing table, the connecting disc is installed at the bottom of the mechanical arm, a fixing assembly is jointly arranged between the bearing table and the mechanical arm, and a first rotating groove and a second rotating groove are formed in the side face of the connecting disc. A rotating unit is rotated to drive a two-way threaded rod and a first gear to rotate, so that first clamping blocks at the two ends of the two-way threaded rod move in the direction of a connecting disc, meanwhile, the first gear drives second gears to rotate through a chain type crawler belt, and the multiple second clamping blocks move in the direction of the connecting disc through a transmission unit; and the first rotating disc on the surface of the first clamping block is located in the first rotating groove, and the second rotating disc on the side face of the second clamping block is located in the second rotating groove, so that the mechanical arm is fixed, and looseness between the mechanical arm and the bearing table is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical arms, and in particular to a mechanical arm connecting device for an industrial robot. Background Art

[0002] Industrial robot arms are key equipment in the field of industrial automation. They are mechanical devices that can simulate human arm movements and complete various industrial tasks according to preset programs. Robotic arms are usually composed of multiple joints and connecting rods, have high flexibility and precision, and can achieve complex motion trajectories in three-dimensional space.

[0003] The robotic arm is fixed with various components by numerous bolts, nuts and other connectors. When it is in long-term operation or subjected to large external force, the bolts and nuts are likely to loosen, thereby causing the connectors between the robotic arm and the load-bearing platform to loosen, resulting in the robotic arm and the load-bearing platform falling off during operation. Therefore, a connection device for the robotic arm of an industrial robot is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art that when the robotic arm is running for a long time or is subjected to a large external force, the bolts and nuts are easily loosened, thereby causing the connecting parts between the robotic arm and the load-bearing platform to loosen, resulting in the robotic arm and the load-bearing platform falling off during operation, and to propose an industrial robot robotic arm connection device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An industrial robot manipulator arm connection device includes a receiving platform, a manipulator arm, and a connection plate. The manipulator arm is mounted on the top of the receiving platform, and the connection plate is mounted on the bottom of the manipulator arm. A fixing assembly is provided between the receiving platform and the manipulator arm. A first rotation groove and a second rotation groove are respectively provided on the side of the connection plate.

[0007] The fixing assembly includes a first fixed frame fixedly connected to the inner side of the receiving platform, a first clamping block symmetrically slidably connected to the inner side of the first fixed frame, a bidirectional threaded rod commonly threadedly connected between the two first clamping blocks, a first rotating disk rotatably connected to the top of the first clamping block, a rotating shaft fixedly connected to one end of the bidirectional threaded rod, a rotating unit commonly arranged between the receiving platform and the rotating shaft, a first gear fixedly connected to the outer side of the rotating shaft, a chain-type crawler rotatably connected to the outer side of the first gear, a second gear rotatably connected to the end of the chain-type crawler away from the first gear, a screw rod fixedly connected to the surface of the second gear, a plurality of second clamping blocks arranged on the surface of the receiving platform, a second clamping block close to the screw rod and threadedly connected to the screw rod, a transmission unit commonly arranged on the plurality of second clamping blocks, and the plurality of second clamping blocks are arranged along the circumference of the surface of the receiving platform. By rotating the rotating unit, the bidirectional threaded rod and the first gear are driven to rotate at the same time, so that the first clamping blocks at both ends of the bidirectional threaded rod move toward the direction of the connecting disk. At the same time, the first gear drives the second gear to rotate through the chain-type crawler, so that the second clamping block close to the screw rod moves toward the direction of the connecting disk, and at the same time, the plurality of second clamping blocks move toward the direction of the connecting disk through the transmission unit.

[0008] The above technical solution further includes:

[0009] The rotating unit includes a limit plate fixedly connected to the outer side of the rotating shaft, the inner side of the limit plate is fixedly connected to the first ratchet and the second ratchet, the inner side of the receiving platform is movably connected to the first pawl, the inner side of the second ratchet is movably connected to the second pawl, the ends of the first pawl and the second pawl are fixedly connected to springs, the two springs are fixedly connected to the surface of the rotating shaft, the surfaces of the first pawl and the second pawl are slidably connected to the limit column, and a rotating cylinder is installed on the outer side of the limit column, and the rotating cylinder is located in the limit plate and slides together. By rotating the second rotating disk, the first clamping block and the second clamping block are synchronously moved toward the direction of the connecting disk.

[0010] The transmission unit includes a surface of a receiving platform rotatably connected to a rotating ring, a side of the second clamping block slidably connected to a second fixed frame, a transmission rod rotatably connected between the second clamping block and the rotating ring, and an end of the second clamping block rotatably connected to a second rotating disk, so that multiple second clamping blocks can be synchronously moved toward the direction of the connecting disk.

[0011] The surface of the receiving platform is fixedly connected with a fixing block, and the screw rod is located in the fixing block and rotates through a thread, so that the rotation of the screw rod is more stable.

[0012] The surface of the limiting plate is symmetrically fixedly connected to the limiting blocks, and the first pawl and the second pawl are respectively located in the two limiting blocks for sliding cooperation, so that the first pawl and the second pawl slide more stably on the surface of the limiting plate.

[0013] A sliding block is symmetrically fixedly connected to the inner side of the first fixing frame, and the first clamping block and the sliding block are slidably matched, so that the sliding of the first clamping block is more stable.

[0014] The top interface between the first pawl and the second pawl is trapezoidal. Rotating the second rotating disk clockwise causes the limiting column to make a circular motion to push the first pawl to move. Rotating the second rotating disk counterclockwise causes the limiting column to make a circular motion to push the second pawl to move.

[0015] The size of the first rotating disk is adapted to the size of the opening of the first rotating slot, and the size of the second rotating disk is adapted to the size of the opening of the second rotating slot.

[0016] The tooth blocks of the first ratchet and the second ratchet are in opposite directions, and the pawls of the first pawl and the second pawl are in opposite directions.

[0017] The size of the lower opening of the second fixing frame is adapted to the transmission rod, and the transmission rod is slidably fitted in the second fixing frame.

[0018] The present invention has the following beneficial effects:

[0019] In the present invention, by rotating the rotating unit, the bidirectional threaded rod and the first gear are driven to rotate, so that the first clamping blocks at both ends of the bidirectional threaded rod move toward the direction of the connecting disk. At the same time, the first gear drives the second gear to rotate through the chain track, and the transmission unit is used to move multiple second clamping blocks toward the direction of the connecting disk until the first rotating disk on the surface of the first clamping block is located in the first rotating groove and the second rotating disk on the side of the second clamping block is located in the second rotating groove, thereby fixing the robotic arm and preventing looseness between the robotic arm and the load-bearing platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of an industrial robot manipulator arm connection device proposed by the present invention;

[0021] Figure 2 It is a schematic cross-sectional view of the structure of the receiving platform in the present invention;

[0022] Figure 3 It is a schematic diagram of the structural disassembly of the fixed disk and the second ratchet in the present invention;

[0023] Figure 4 This is a structural diagram of the receiving platform of this part of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of the receiving platform in the present invention;

[0025] Figure 6 It is a schematic structural diagram of the connecting plate and the first fixing frame in the present invention.

[0026] In the figure: 1. receiving platform; 2. robotic arm; 3. connecting disk; 4. first rotating groove; 5. second rotating groove; 6. first fixed frame; 7. bidirectional threaded rod; 8. first clamping block; 9. first rotating disk; 10. rotating shaft; 11. limiting disk; 12. first ratchet; 13. second ratchet; 14. first pawl; 15. second pawl; 16. spring; 17. limiting column; 18. first gear; 19. chain track; 20. second gear; 21. screw rod; 22. second clamping block; 23. second fixed frame; 24. rotating ring; 25. transmission rod; 26. rotating drum; 27. second rotating disk; 28. fixed block; 29. ​​limiting block; 30. slider. DETAILED DESCRIPTION

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1

[0029] like Figures 1 to 6 As shown, the present invention proposes an industrial robot manipulator arm connection device, comprising a receiving platform 1, a manipulator arm 2, and a connecting plate 3. The manipulator arm 2 is mounted on the top of the receiving platform 1, and the connecting plate 3 is mounted on the bottom of the manipulator arm 2. A fixing component is provided between the receiving platform 1 and the manipulator arm 2. The side surfaces of the connecting plate 3 are respectively provided with a first rotation groove 4 and a second rotation groove 5.

[0030] The fixing assembly includes a first fixing frame 6 fixedly connected to the inner side of the receiving platform 1, a first clamping block 8 symmetrically slidably connected to the inner side of the first fixing frame 6, a bidirectional threaded rod 7 threadedly connected between the two first clamping blocks 8, a first rotating disk 9 rotatably connected to the top of the first clamping block 8, a rotating shaft 10 fixedly connected to one end of the bidirectional threaded rod 7, a rotating unit jointly provided between the receiving platform 1 and the rotating shaft 10, a first gear 18 fixedly connected to the outer side of the rotating shaft 10, a chain crawler 19 rotatably connected to the outer side of the first gear 18, a second gear 20 rotatably connected to the end of the chain crawler 19 away from the first gear 18, and a screw rod 21 fixedly connected to the surface of the second gear 20. , multiple second clamping blocks 22 are set on the surface of the receiving platform 1, the second clamping block 22 close to the screw rod 21 is threadedly connected to the screw rod 21, multiple second clamping blocks 22 are jointly provided with a transmission unit, and multiple second clamping blocks 22 are arranged along the circumference of the surface of the receiving platform 1. By rotating the rotation unit, the two-way threaded rod 7 and the first gear 18 are driven to rotate at the same time, so that the first clamping blocks 8 at both ends of the two-way threaded rod 7 move toward the direction of the connecting disk 3, and at the same time, the first gear 18 drives the second gear 20 to rotate through the chain track 19, so that the second clamping block 22 close to the screw rod 21 moves toward the direction of the connecting disk 3, and at the same time, the multiple second clamping blocks 22 are moved toward the direction of the connecting disk 3 through the transmission unit.

[0031] The rotating unit includes a limit plate 11 fixedly connected to the outer side of the rotating shaft 10, and the inner side of the limit plate 11 is fixedly connected to the first ratchet 12 and the second ratchet 13, the inner side of the receiving platform 1 is movably connected to the first pawl 14, and the inner side of the second ratchet 13 is movably connected to the second pawl 15, and the ends of the first pawl 14 and the second pawl 15 are fixedly connected to the spring 16, and the two springs 16 are fixedly connected to the surface of the rotating shaft 10, and the surfaces of the first pawl 14 and the second pawl 15 are slidably connected to the limit column 17, and a rotating cylinder 26 is installed on the outer side of the limit column 17, and the rotating cylinder 26 is located in the limit plate 11 and slides together. By rotating the second rotating disk 27, the first clamping block 8 and the second clamping block 22 are synchronously moved toward the direction of the connecting disk 3, and at the same time, the automatic rotation of the rotating shaft 10 can be avoided, and the connecting disk 3 can be prevented from falling off from the receiving platform 1.

[0032] The transmission unit includes a rotating ring 24 rotatably connected to the surface of the receiving platform 1, a second fixed frame 23 slidably connected to the side of the second clamping block 22, a transmission rod 25 rotatably connected between the second clamping block 22 and the rotating ring 24, and a second rotating disk 27 rotatably connected to the end of the second clamping block 22, so that multiple second clamping blocks 22 can move synchronously toward the connecting disk 3.

[0033] A fixing block 28 is fixedly connected to the surface of the receiving platform 1 , and the screw rod 21 is located in the fixing block 28 and rotates through the inner thread, which makes the rotation of the screw rod 21 more stable.

[0034] The surface of the limit plate 11 is symmetrically fixedly connected to the limit block 29 , and the first pawl 14 and the second pawl 15 are respectively located in the two limit blocks 29 for sliding cooperation, so that the first pawl 14 and the second pawl 15 can slide more stably on the surface of the limit plate 11 .

[0035] The inner side of the first fixing frame 6 is symmetrically fixedly connected with a slider 30 . The first clamping block 8 and the slider 30 are slidably matched, so that the sliding of the first clamping block 8 is more stable.

[0036] The top interface between the first pawl 14 and the second pawl 15 is trapezoidal. Rotating the second rotating disk 27 clockwise causes the limiting column 17 to make a circular motion to push the first pawl 14 to move. Rotating the second rotating disk 27 counterclockwise causes the limiting column 17 to make a circular motion to push the second pawl 15 to move.

[0037] The size of the first rotating disk 9 is adapted to the opening size of the first rotating groove 4 , and the size of the second rotating disk 27 is adapted to the opening size of the second rotating groove 5 .

[0038] The teeth of the first ratchet 12 and the second ratchet 13 are in opposite directions, and the pawls of the first pawl 14 and the second pawl 15 are in opposite directions.

[0039] The size of the lower opening of the second fixing frame 23 is adapted to the transmission rod 25 , and the transmission rod 25 is slidably fitted in the second fixing frame 23 .

[0040] In this embodiment, after the connecting disk 3 under the robotic arm 2 is inserted into the receiving platform 1, the limiting column 17 is driven to make a circular motion by rotating the rotating drum 26 clockwise, and the second pawl 15 will move along the gear direction of the second ratchet 13. The limiting column 17 on the surface of the first pawl 14 makes a circular motion, and is contracted and moved in the direction of the rotating shaft 10 through the workmanship of the surface inclined surface of the first pawl 14, and then rotates along the gear of the first ratchet 12 through the elasticity of the spring 16, thereby driving the rotating shaft 10 to rotate. During the rotation of the rotating shaft 10, the bidirectional threaded rod 7 and the first gear 18 are driven to rotate at the same time, so that the first clamping blocks 8 at both ends of the bidirectional threaded rod 7 move toward the direction of the connecting disk 3, and the first gear 18 will drive the second gear 20 to rotate through the chain crawler 19. The rotation of the second gear 20 drives the screw rod 21 to rotate, thereby pushing the screw rod 21 close to the screw. The second clamping block 22 of the screw rod 21 slides on the inner side of the second fixed frame 23 toward the direction of the connecting disk 3. At the same time, during the process of the second clamping block 22 sliding on the inner side of the second fixed frame 23 toward the direction of the connecting disk 3, the second clamping block 22 will drive the transmission rod 25 to rotate, and drive the rotating ring 24 to rotate. Through the rotation of the rotating ring 24, multiple transmission rods 25 drive the second clamping block 22 to slide in the direction of the connecting disk 3 until the first rotating disk 9 on the surface of the first clamping block 8 is located in the first rotating groove 4 and the second rotating disk 27 on the side of the second clamping block 22 is located in the second rotating groove 5, thereby fixing the robotic arm 2. During the operation of the robotic arm 2, the engagement of the first ratchet 12 and the first pawl 14, and the engagement of the second ratchet 13 and the second pawl 15 prevent the rotating shaft 10 from rotating on its own, thereby avoiding loosening between the robotic arm 2 and the receiving platform 1.

[0041] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An industrial robot arm connection device, comprising a receiving platform (1), a robot arm (2) and a connection plate (3), characterized in that: The mechanical arm (2) is mounted on the top of the receiving platform (1), the connecting plate (3) is mounted on the bottom of the mechanical arm (2), a fixing assembly is provided between the receiving platform (1) and the mechanical arm (2), and a first rotation groove (4) and a second rotation groove (5) are respectively provided on the side surface of the connecting plate (3); The fixing assembly comprises a first fixing frame (6) fixedly connected to the inner side of the receiving platform (1), a first clamping block (8) symmetrically slidably connected to the inner side of the first fixing frame (6), a bidirectional threaded rod (7) threadedly connected between the two first clamping blocks (8), a first rotating disk (9) rotatably connected to the top of the first clamping block (8), a rotating shaft (10) fixedly connected to one end of the bidirectional threaded rod (7), a rotating unit commonly provided between the receiving platform (1) and the rotating shaft (10), a first gear (18) fixedly connected to the outer side of the rotating shaft (10), a chain crawler (19) rotatably connected to the outer side of the first gear (18), a second gear (20) rotatably connected to one end of the chain crawler (19) away from the first gear (18), and a screw rod (21) fixedly connected to the surface of the second gear (20). ), a plurality of second clamping blocks (22) are arranged on the surface of the receiving platform (1), the second clamping block (22) close to the screw rod (21) is threadedly connected to the screw rod (21), the plurality of second clamping blocks (22) are jointly provided with a transmission unit, the plurality of second clamping blocks (22) are arranged along the circumference of the surface of the receiving platform (1), and the bidirectional threaded rod (7) and the first gear (18) are driven to rotate by rotating the rotation unit at the same time, so that the first clamping blocks (8) at both ends of the bidirectional threaded rod (7) move toward the direction of the connecting disk (3), and at the same time, the first gear (18) drives the second gear (20) to rotate through the chain crawler (19), so that the second clamping block (22) close to the screw rod (21) moves toward the direction of the connecting disk (3), and at the same time, the plurality of second clamping blocks (22) move toward the direction of the connecting disk (3) through the transmission unit.

2. The industrial robot arm connection device according to claim 1, characterized in that: The rotating unit comprises a limiting plate (11) fixedly connected to the outer side of the rotating shaft (10), a first ratchet (12) and a second ratchet (13) fixedly connected to the inner side of the limiting plate (11), a first pawl (14) movably connected to the inner side of the receiving platform (1), a second pawl (15) movably connected to the inner side of the second ratchet (13), the ends of the first pawl (14) and the second pawl (15) are fixedly connected to springs (16), the two springs (16) are fixedly connected to the surface of the rotating shaft (10), the surfaces of the first pawl (14) and the second pawl (15) are slidably connected to limiting columns (17), a rotating cylinder (26) is installed on the outer side of the limiting column (17), and the rotating cylinder (26) is located in the limiting plate (11) and is slidably matched.

3. The industrial robot arm connection device according to claim 1, characterized in that: The transmission unit comprises a receiving platform (1) having a surface rotatably connected to a rotating ring (24), a side surface of the second clamping block (22) being slidably connected to a second fixed frame (23), a transmission rod (25) being rotatably connected between the second clamping block (22) and the rotating ring (24), and an end portion of the second clamping block (22) being rotatably connected to a second rotating disk (27).

4. The industrial robot arm connection device according to claim 1, characterized in that: A fixed block (28) is fixedly connected to the surface of the receiving platform (1), and the screw rod (21) is located in the internal thread of the fixed block (28) and rotates.

5. The industrial robot arm connection device according to claim 2, characterized in that: The surface of the limiting plate (11) is symmetrically fixedly connected to the limiting blocks (29), and the first pawl (14) and the second pawl (15) are respectively located in the two limiting blocks (29) for sliding fit.

6. The industrial robot arm connection device according to claim 1, characterized in that: A slider (30) is symmetrically fixedly connected to the inner side of the first fixed frame (6), and the first clamping block (8) and the slider (30) are slidably matched.

7. The industrial robot arm connection device according to claim 2, characterized in that: The top interface of the first pawl (14) and the second pawl (15) is trapezoidal. When the second rotating disk (27) is rotated clockwise, the limiting column (17) makes a circular motion to push the first pawl (14) to move. When the second rotating disk (27) is rotated counterclockwise, the limiting column (17) makes a circular motion to push the second pawl (15) to move.

8. The industrial robot arm connection device according to claim 3, characterized in that: The size of the first rotating disk (9) is adapted to the size of the opening of the first rotating groove (4), and the size of the second rotating disk (27) is adapted to the size of the opening of the second rotating groove (5).

9. The industrial robot arm connection device according to claim 2, characterized in that: The tooth blocks of the first ratchet (12) and the second ratchet (13) are in opposite directions, and the pawls of the first ratchet (14) and the second ratchet (15) are in opposite directions.

10. The industrial robot arm connection device according to claim 3, characterized in that: The size of the lower opening of the second fixed frame (23) is adapted to the transmission rod (25), and the transmission rod (25) is located in the second fixed frame (23) and is slidably fitted therein.

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