Quick-release type mechanical arm

Abstract

The utility model discloses a quick release type mechanical arm which comprises a mechanical arm body, the mechanical arm body is detachably connected with a base through a connecting piece, the base is provided with a fixing assembly, the fixing assembly comprises a fixing piece welded to the base, a lead screw is rotationally connected into the fixing piece, and the lead screw is connected with a connecting piece. The top end and the bottom end of the lead screw are in threaded connection with a sliding round block, the sliding round block is in hinged connection with the connecting rod through a first connecting block, vertical grooves are formed in the outer surface of the fixing piece at equal intervals, limiting blocks are slidably connected into the vertical grooves, and a fixing groove is formed in the bottom end of the connecting piece; limiting grooves are formed in the inner surface of the fixing groove at equal intervals, rotation of the lead screw enables the two sliding round blocks to move back to back, then the connecting rod is driven to get close to the lead screw, along with movement of the connecting rod, the limiting blocks move from the limiting grooves into the vertical grooves, and therefore the mechanical arm body is rapidly detached from the base, the detaching time is shortened, and the detaching efficiency is improved. And the disassembly and maintenance efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to a mechanical arm, in particular to a quick-detachable mechanical arm. Background Art

[0002] A robotic arm refers to 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] At present, the lower end of the existing robotic arm is generally fixed by bolts, which is cumbersome in the installation and disassembly steps. When a problem occurs at the lower end of the robotic arm and the lower end of the robotic arm needs to be disassembled and repaired, tools are required for disassembly, which takes a lot of time and greatly affects the efficiency of disassembly and repair.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a quick-detachable mechanical arm to overcome the above technical problems existing in the existing related technology.

[0006] To this end, the specific technical solutions adopted by the utility model are as follows:

[0007] The top end of the fixing member is provided with a fixing member, the fixing member being provided with a fixing member which is fixed to the bottom end of the fixing member and is detachably connected to the bottom end of the fixing member.

[0008] Furthermore, in order to lock the limit block in the limit groove, the locking assembly includes locking circular grooves equidistantly arranged on the top of the connecting piece, the locking circular groove is interconnected with the limit groove, a locking circular block is threadedly connected to the locking circular groove, a cross rotating block is welded on the top of the locking circular block, an insertion rod is welded on the bottom end of the locking circular block, and the insertion rod matches the limit hole.

[0009] Furthermore, in order to facilitate the disassembly of the locking assembly, an internal thread is provided on the inner surface of the locking circular groove, and an external thread is provided on the outer surface of the locking circular block, and the external thread matches the internal thread.

[0010] Furthermore, in order to make the limiting block slide stably in the vertical slot, sliding slots are provided on the top and bottom ends of the vertical slot, sliding blocks are welded on the top and bottom ends of the limiting block, and the sliding blocks are slidably connected to the sliding slots.

[0011] Furthermore, in order to facilitate the movement of the limiting block with the connecting rod, a second connecting block is welded to one end of the limiting block, and one end of the connecting rod away from the first connecting block is hingedly connected to the second connecting block.

[0012] Furthermore, in order to facilitate the rotation of the screw rod, a cavity is opened inside the base, and a rotating rod is rotatably connected to one end of the inner surface of the cavity, and a bevel gear 1 is fixedly connected to one end of the rotating rod. The bottom end of the screw rod extends into the cavity and is connected to bevel gear 2, and bevel gear 2 is meshed with bevel gear 1.

[0013] Furthermore, in order to facilitate the rotation of the rotating rod, the other end of the rotating rod extends outside the base and is fixedly connected to the turntable.

[0014] The beneficial effects of the utility model are:

[0015] 1. Turn the turntable to make the rotating rod rotate in the cavity, and make the bevel gear 1 rotate synchronously with the rotating rod. Through the meshing of bevel gear 1 and bevel gear 2, the screw rod rotates in the fixed cavity, and the two sliding round blocks move back to back, thereby driving the connecting rod to approach the screw rod. With the movement of the connecting rod, the limit block moves from the limit groove to the vertical groove, so that the robot arm body can be quickly removed from the base, thereby shortening the disassembly time and further improving the efficiency of disassembly and maintenance.

[0016] 2. If the robot body is fixed on the base, the limit block is in the limit groove, and the limit hole on the limit block is flush with the locking circular groove, the insertion rod is inserted into the limit hole through the locking circular groove. The setting of the insertion rod fixes the limit block in the limit groove, further improving the stability between the robot body and the base. By rotating the cross turn block and under the action of the internal thread and the external thread, the locking circular block is fixed in the locking circular groove, effectively avoiding the vibration of the robot body during operation, causing the insertion rod to move out of the locking circular groove, affecting the stability between the robot body and the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a quick-detachable mechanical arm according to an embodiment of the utility model;

[0019] Figure 2 It is a partial cross-sectional view of a connecting piece in a quick-detachable mechanical arm according to an embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a base in a quick-detachable mechanical arm according to an embodiment of the utility model;

[0021] Figure 4 It is a cross-sectional view of a base in a quick-detachable mechanical arm according to an embodiment of the utility model;

[0022] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0023] In the figure:

[0024] 1. Robot arm body; 2. Connecting piece; 3. Locking circular groove; 4. Internal thread; 5. Locking circular block; 6. External thread; 7. Cross rotating block; 8. Insert rod; 9. Fixed groove; 10. Limiting groove; 11. Base; 12. Cavity; 13. Rotating rod; 14. Turntable; 15. Bevel gear one; 16. Fixing piece; 17. Fixed cavity; 18. Screw rod; 19. Bevel gear two; 20. Sliding circular block; 21. First connecting block; 22. Connecting rod; 23. Vertical groove; 24. Sliding groove; 25. Second connecting block; 26. Limiting block; 27. Sliding block; 28. Limiting hole. DETAILED DESCRIPTION

[0025] 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.

[0026] According to an embodiment of the utility model, a quick-detachable mechanical arm is provided. Embodiment 1

[0027] like Figure 1-Figure 5As shown, according to the embodiment of the utility model, the quick-detachable mechanical arm includes a mechanical arm body 1, a connecting piece 2 is welded on the bottom end of the mechanical arm body 1, a base 11 is detachably connected to the bottom end of the connecting piece 2, a fixing assembly is provided on the base 11, and the fixing assembly includes a fixing piece 16 welded on the base 11, a fixing cavity 17 is provided inside the fixing piece 16, a screw rod 18 is rotatably connected in the fixing cavity 17 through a bearing, a sliding round block 20 is threadedly connected to the top and bottom ends of the screw rod 18, the number of the sliding round blocks 20 is two, first connecting blocks 21 are welded at equal distances on the outer surface of the sliding round block 20, the number of the first connecting blocks 21 is eight, a connecting rod 22 is hingedly connected to the first connecting block 21, and the connecting rod 22 There are eight of them. Vertical grooves 23 are provided at equal distances on the outer surface of the fixing member 16. There are four vertical grooves 23. The vertical grooves 23 are interconnected with the fixing cavity 17. A limiting block 26 is slidably connected in the vertical groove 23. There are four limiting blocks 26. In order to facilitate the limiting block 26 to move with the connecting rod 22, a second connecting block 25 is welded on one end of the limiting block 26. There are four second connecting blocks 25. One end of the connecting rod 22 away from the first connecting block 21 is hingedly connected to the second connecting block 25. In order to make the limiting block 26 slide stably in the vertical groove 23, a sliding groove 24 is provided on the top and bottom ends of the vertical groove 23. A sliding block 27 is welded on the top and bottom ends of the limiting block 26. The sliding block 27 is slidably connected to the sliding groove 24. A limiting hole 28 is provided on the limiting block 26, and the number of the limiting holes 28 is four. In order to facilitate the rotation of the screw rod 18, a cavity 12 is provided inside the base 11. A rotating rod 13 is rotatably connected to one end of the inner surface of the cavity 12 through a bearing. A bevel gear 15 is fixedly connected to one end of the rotating rod 13. The bottom end of the screw rod 18 extends into the cavity 12 and is connected to a bevel gear 2 19. The bevel gear 2 19 is meshed with the bevel gear 15. In order to facilitate the rotation of the rotating rod 13, the other end of the rotating rod 13 extends to the outside of the base 11 and is fixedly connected to the turntable 14. A fixing groove 9 is provided at the center of the bottom end of the connecting member 2. The fixing groove 9 is adapted to the fixing member 16, and the inner surface of the fixing groove 9 is equidistant. A limiting groove 10 is provided, and the number of the limiting grooves 10 is four. The limiting grooves 10 match the limiting blocks 26. A locking assembly is provided on the top of the connecting member 2. The turntable 14 is rotated to rotate the rotating rod 13 in the cavity 12, and the bevel gear 1 15 is synchronously rotated with the rotating rod 13. The bevel gear 15 is meshed with the bevel gear 2 19 to rotate the screw rod 18 in the fixed cavity 17, and the two sliding round blocks 20 are moved in reverse, thereby driving the connecting rod 22 to approach the screw rod 18. With the movement of the connecting rod 22, the limiting blocks 26 move from the limiting groove 10 to the vertical groove 23, so that the robot arm body 1 can be quickly disassembled from the base 11, thereby shortening the disassembly time and further improving the efficiency of disassembly and maintenance. Embodiment 2

[0028] See also Figure 1-Figure 3In order to lock the limit block 26 in the limit groove 10, the locking assembly includes a locking circular groove 3 equidistantly arranged on the top of the connecting member 2, the number of the locking circular groove 3 is four, the locking circular groove 3 is interconnected with the limit groove 10, the locking circular groove 3 is internally threaded with a locking circular block 5, the inner surface of the locking circular groove 3 is provided with an internal thread 4, the outer surface of the locking circular block 5 is provided with an external thread 6, the external thread 6 matches the internal thread 4, a cross rotating block 7 is welded on the top of the locking circular block 5, and an insertion rod 8 is welded on the bottom end of the locking circular block 5, and the insertion rod 8 matches the limit hole 28. If the robot arm body 1 is fixed on the base 11, the limit The block 26 is in the limiting groove 10, and the limiting hole 28 on the limiting block 26 is flush with the locking circular groove 3, and the insertion rod 8 is inserted into the limiting hole 28 through the locking circular groove 3. The setting of the insertion rod 8 fixes the limiting block 26 in the limiting groove 10, further improving the stability between the robot arm body 1 and the base 11. By rotating the cross turn block 7 and under the action of the internal thread 4 and the external thread 6, the locking circular block 5 is fixed in the locking circular groove 3, effectively avoiding the vibration of the robot arm body 1 during operation, causing the insertion rod 8 to move out of the locking circular groove 3, affecting the stability between the robot arm body 1 and the base 11.

[0029] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0030] In actual application, if the robot arm body 1 is fixed on the base 11, first, the locking circular groove 3 on the connecting member 2 is overlapped on the fixing member 16, and the limiting groove 10 in the locking circular groove 3 is aligned with the vertical groove 23 outside the fixing member 16. Secondly, the turntable 14 is rotated clockwise to rotate the rotating rod 13 in the cavity 12, and the bevel gear 1 15 is rotated synchronously with the rotating rod 13. The bevel gear 15 is meshed with the bevel gear 2 19 to rotate the screw rod 18 in the fixing cavity 17, and the two sliding round blocks 20 are moved toward each other. The movement of the connecting rod 22 drives the connecting rod 22 to move into the vertical groove 23. With the movement of the connecting rod 22, the limiting block 26 moves from the vertical groove 23 to the limiting groove 10. At this time, if the limiting hole 28 on the limiting block 26 is flush with the locking circular groove 3, the insertion rod 8 is inserted into the limiting hole 28 through the locking circular groove 3. The setting of the insertion rod 8 fixes the limiting block 26 in the limiting groove 10, further improving the stability between the robot body 1 and the base 11. By rotating the cross rotating block 7 clockwise and in the action of the internal thread 4 and the external thread 6 The locking block 5 is fixed in the locking groove 3, which effectively prevents the mechanical arm body 1 from vibrating during operation, causing the insertion rod 8 to move out of the locking groove 3, affecting the stability between the mechanical arm body 1 and the base 11. If the mechanical arm body 1 is removed from the base 11, first, rotate the cross rotating block 7 counterclockwise, and under the action of the internal thread 4 and the external thread 6, the locking block 5 is moved out of the locking groove 3, and the insertion rod 8 is moved out of the limiting hole 28. Secondly, rotate the turntable 14 counterclockwise to rotate the turntable 14. The rod 13 rotates in the cavity 12, and makes the bevel gear 15 rotate synchronously with the rotating rod 13. The bevel gear 15 meshes with the bevel gear 2 19, so that the screw rod 18 rotates in the fixed cavity 17, and the two sliding round blocks 20 move back to back, thereby driving the connecting rod 22 to approach the screw rod 18. With the movement of the connecting rod 22, the limit block 26 moves from the limit groove 10 to the vertical groove 23, so that the robot arm body 1 can be quickly disassembled from the base 11, thereby shortening the disassembly time and further improving the efficiency of disassembly and maintenance.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick-release mechanical arm, comprising a mechanical arm body (1), characterized in that: A connecting piece (2) is welded to the bottom end of the robot arm body (1), and a base (11) is detachably connected to the bottom end of the connecting piece (2). A fixing assembly is provided on the base (11), and the fixing assembly comprises a fixing piece (16) welded to the base (11). A fixing cavity (17) is provided inside the fixing piece (16), and a screw rod (18) is rotatably connected inside the fixing cavity (17). A sliding round block (20) is threadedly connected to the top and bottom ends of the screw rod (18), and a first connecting block (21) is welded to the outer surface of the sliding round block (20) at equal distances, and a connecting rod (21) is hingedly connected to the first connecting block (21). The fixing member (16) is provided with vertical grooves (23) at equal distances on its outer surface, the vertical grooves (23) are communicated with the fixing cavity (17), a limit block (26) is slidably connected in the vertical groove (23), a limit hole (28) is provided on the limit block (26), a fixing groove (9) is provided at the center of the bottom end of the connecting member (2), the fixing groove (9) is matched with the fixing member (16), and limit grooves (10) are provided at equal distances on the inner surface of the fixing groove (9), the limit grooves (10) are matched with the limit block (26), and a locking component is provided on the top end of the connecting member (2).

2. A quick-detachable mechanical arm according to claim 1, characterized in that: The locking assembly comprises locking circular grooves (3) equidistantly arranged on the top of the connecting member (2), the locking circular grooves (3) being interconnected with the limiting grooves (10), the locking circular grooves (3) being internally threadedly connected with a locking circular block (5), the top of the locking circular block (5) being welded with a cross rotating block (7), the bottom of the locking circular block (5) being welded with an insertion rod (8), the insertion rod (8) being matched with the limiting hole (28).

3. A quick-detachable mechanical arm according to claim 2, characterized in that: An internal thread (4) is provided on the inner surface of the locking circular groove (3), and an external thread (6) is provided on the outer surface of the locking circular block (5), wherein the external thread (6) matches the internal thread (4).

4. The quick-detachable mechanical arm according to claim 1, characterized in that: The top and bottom ends of the vertical groove (23) are provided with sliding grooves (24), the top and bottom ends of the limit block (26) are welded with sliding blocks (27), and the sliding blocks (27) are slidably connected to the sliding grooves (24).

5. The quick-detachable mechanical arm according to claim 4, characterized in that: A second connecting block (25) is welded to one end of the limiting block (26), and an end of the connecting rod (22) away from the first connecting block (21) is hinge-connected to the second connecting block (25).

6. The quick-detachable mechanical arm according to claim 1, characterized in that: A cavity (12) is provided inside the base (11); a rotating rod (13) is rotatably connected to one end of the inner surface of the cavity (12); a bevel gear 1 (15) is fixedly connected to one end of the rotating rod (13); a bottom end of the screw rod (18) extends into the cavity (12) and is connected to a bevel gear 2 (19); and the bevel gear 2 (19) is meshed with the bevel gear 1 (15).

7. The quick-detachable mechanical arm according to claim 6, characterized in that: The other end of the rotating rod (13) extends outside the base (11) and is fixedly connected to the rotating disk (14).

Images