Mechanical arm facilitating stable clamping

Abstract

The utility model relates to the technical field of mechanical clamping, in particular to a mechanical arm facilitating stable clamping, which comprises a base, a rod body is rotatably connected to the upper end of the base in a penetrating manner, hydraulic cylinders are fixedly connected to the interiors of the end parts of the rod body respectively, a second motor is fixedly connected to the side wall of a connecting block, and a convex block is fixedly connected to the lower end of a rotating block. And the outer side of the protruding block is slidably connected with a plate block, the output end of the third motor is fixedly connected with a shell, and a clamping assembly is installed in the shell. A first motor drives a second gear to rotate, the second gear drives a first gear to rotate while rotating, a rod body drives a connecting block, a rotating block and a shell to rotate, a clamping assembly is rotated to the side of a material, a hydraulic cylinder drives the connecting block to extend, and the clamping assembly can clamp an object; and then the rod body enables the clamping assembly to drive the object to be located on the side of the spraying gun, and then the object is subjected to anti-corrosion spraying treatment through the spraying gun.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical clamping, in particular to a mechanical arm which is convenient for stable clamping. Background Art

[0002] A robotic arm is a robot that can simulate the movement of a human arm. It consists of multiple joints and actuators and can perform various complex movements. The scope of use of robotic arms is very wide, including industrial manufacturing, medical, military, aerospace and other fields. Among them, robotic arms are widely used in industrial manufacturing and can be used for assembly, handling, welding, spraying and other tasks. Robotic arms can complete highly repetitive and dangerous tasks, improving production efficiency and product quality.

[0003] After searching, the utility model patent with Chinese patent publication number CN217751486U discloses a mechanical arm clamping device, including a body and a clamping plate, a support arm is installed on the surface of the body, a clamping frame is installed on both sides of the support arm, and a replacement structure is provided on the surface of the clamping frame, and the replacement structure includes a U-shaped plate, one side of the U-shaped plate is fixedly connected to the clamping frame, the surface of the U-shaped plate is rotatably connected to a long rod, the arc surface of the long rod is fixedly connected to the clamping plate, the upper end of the long rod is fixedly connected to a clamping plate, one side of the U-shaped plate is fixedly connected to an L-shaped plate, the short arm of the L-shaped plate is threadedly connected to a screw, the lower end of the screw is rotatably connected to a clamping block, the lower surface of the clamping block is slidably connected to the clamping plate, one side of the clamping block is fixedly connected to an L-shaped rod, and the long arm of the L-shaped rod passes through the L-shaped plate. This application solves the problem of low personnel replacement efficiency during the replacement of the clamping plate when the clamping plate is repeatedly disassembled and assembled to clamp different workpieces.

[0004] After searching, it was found that the above patent solved the problem of low efficiency of personnel replacement during the replacement of splints when repeatedly disassembling and assembling the splints to clamp different workpieces. However, it failed to facilitate the disassembly and assembly of the robotic arm, which resulted in a long time required to dismantle, repair or replace the clamping components after they were damaged. Utility Model Content

[0005] The purpose of the utility model is to provide a mechanical arm that is easy to stably clamp an object. Through this device, the effect of stably clamping an object and facilitating the disassembly and assembly of the mechanical arm is achieved, so as to solve the problems of unstable clamping of objects and inconvenient disassembly and assembly of the mechanical arm in the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A mechanical arm that is convenient for stable clamping comprises a base, a rod body is rotatably connected to the upper end of the base, a hydraulic cylinder and a plurality of auxiliary telescopic rods are respectively fixedly connected inside the ends of the rod body, a connecting block is fixedly connected to the ends of the hydraulic cylinder and the auxiliary telescopic rods, a rotating rod is rotatably connected inside the end of the connecting block, a rotating block is fixedly connected to the side wall of the rotating rod, a second motor is fixedly connected to the side wall of the connecting block, an output end of the second motor is fixedly connected to the end of the rotating rod, a protrusion is fixedly connected to the lower end of the rotating block, a plate is slidably connected to the outer side of the protrusion, a third motor is fixedly connected inside the lower end of the plate, a shell is fixedly connected to the output end of the third motor, and a clamping assembly is installed inside the shell.

[0008] Preferably, a gear 1 is fixedly connected to the side wall of the rod body, a motor 1 is fixedly connected to the inside of the base, a gear 2 is fixedly connected to the output end of the motor 1, and the gear 1 is meshed with the gear 2.

[0009] Preferably, blocks are slidably connected inside both sides of the protrusion, a screw is rotatably connected inside the protrusion, the screw is threadedly rotatably connected to the two blocks, and slots are penetrated on both sides of the plate, and the blocks cooperate with the slots.

[0010] Preferably, the clamping assembly includes a motor four, the motor four is fixedly connected to the side wall of the shell, a gear three is rotatably connected inside the shell, and the output end of the motor four is fixedly connected to the side wall of the gear three.

[0011] Preferably, two movable plates are slidably connected inside the shell, the inner wall of the movable plate is fixedly connected with a rack, the two movable plates are respectively located at both ends of gear three, the gear three is meshed with the rack, the side wall of the movable plate is fixedly connected with a clamping arm, and the clamping arm is slidably connected with the lower end of the shell.

[0012] Preferably, a plurality of slide grooves corresponding to the clamping arms are arranged at the lower end of the shell, and sliders are fixedly connected to both sides of the clamping arms, and the sliders are slidably connected to the slide grooves.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] 1. The motor 1 drives the gear 2 to rotate. The gear 2 rotates and drives the gear 1 to rotate at the same time, so that the rod drives the connecting block, the rotating block and the shell to rotate, and the clamping assembly is rotated to the side of the material. The hydraulic cylinder drives the connecting block to extend. At the same time, with the assistance of multiple auxiliary telescopic rods, the stability of the hydraulic cylinder driving the connecting block to extend is increased. The motor 2 drives the rotating rod and the rotating block to rotate, and the angle of the shell is adjusted so that the clamping assembly can clamp the object. The rod again makes the clamping assembly bring the object to the side of the spray gun, and then the spray gun is used to spray the object with anti-corrosion. The motor 3 drives the shell to rotate, so that the object can be fully covered with spray.

[0015] 2. When the clamping assembly fails and needs maintenance, the block is moved and separated from the slot by turning the screw with a hexagonal wrench. After the block moves to the inside of the protrusion, the operator slides the block out from the outside of the protrusion, making it easier to disassemble and assemble the clamping assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front sectional structural schematic diagram of a mechanical arm that is convenient for stable clamping proposed by the utility model.

[0017] Figure 2 This is a schematic diagram of the top view of the structure of a mechanical arm that is convenient for stable clamping proposed by the utility model.

[0018] Figure 3 This is a schematic diagram of the side sectional structure of a mechanical arm that is convenient for stable clamping proposed by the utility model.

[0019] In the figure: 1 base, 2 rod body, 3 gear 1, 4 motor 1, 5 gear 2, 6 hydraulic cylinder, 7 auxiliary telescopic rod, 8 connecting block, 9 motor 2, 10 rotating rod, 11 rotating block, 12 protrusion, 13 clamping block, 14 screw rod, 15 plate, 16 motor 3, 17 housing, 18 motor 4, 19 gear 3, 20 movable plate, 21 rack, 22 slide groove, 23 clamping arm. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-3A mechanical arm that is convenient for stable clamping includes a base 1, a rod body 2 is rotatably connected to the upper end of the base 1, a hydraulic cylinder 6 and a plurality of auxiliary telescopic rods 7 are respectively fixedly connected to the ends of the rod body 2, the ends of the hydraulic cylinder 6 and the ends of the auxiliary telescopic rods 7 are fixedly connected to a connecting block 8, a rotating rod 10 is rotatably connected to the end of the connecting block 8, a rotating block 11 is fixedly connected to the side wall of the rotating rod 10, a motor 2 9 is fixedly connected to the side wall of the connecting block 8, an output end of the motor 2 9 is fixedly connected to the end of the rotating rod 10, a convex block 12 is fixedly connected to the lower end of the rotating block 11, a plate 15 is slidably connected to the outer side of the convex 12, and a plate 15 is slidably connected to the plate A motor 3 16 is fixedly connected to the lower end of the block 15, and a shell 17 is fixedly connected to the output end of the motor 3 16. A clamping assembly is installed inside the shell 17. A plurality of auxiliary telescopic rods 7 are dispersedly arranged around the hydraulic cylinder 6. When the hydraulic cylinder 6 drives the connecting block 8 to extend, the stability of the connecting block 8 after the hydraulic cylinder 6 drives the extension is increased with the assistance of the plurality of auxiliary telescopic rods 7. The rotating rod 10 and the rotating block 11 are driven to rotate by the motor 2 9 to adjust the shell 17 to different angles, and then the shell 17 is driven to rotate by the motor 3 16, and the object is clamped by the clamping assembly at the same time.

[0022] A gear 3 is fixedly connected to the side wall of the rod body 2, a motor 4 is fixedly connected to the inside of the base 1, and a gear 2 5 is fixedly connected to the output end of the motor 4. The gear 1 3 is meshed with the gear 2 5, and the motor 1 4 drives the gear 2 5 to rotate. When the gear 2 5 rotates, it drives the gear 1 3 to rotate, thereby rotating the rod body 2.

[0023] Blocks 13 are slidably connected inside both sides of the protrusion 12, and a screw 14 is rotatably connected inside the protrusion 12. The screw 14 is threadedly rotatably connected to the two blocks 13. Slots are penetrated on both sides of the plate 15, and the blocks 13 cooperate with the slots. The side walls of the screw 14 are provided with positive and negative screw threads. The two blocks 13 correspond to the positive and negative screw threads, so that the two blocks 13 operate relative to each other. Hexagonal notches are provided at both ends of the screw 14. By using a hexagonal wrench to rotate the screw 14, the block 13 is moved into the slot, so that the plate 15 is engaged and connected to the outside of the protrusion 12.

[0024] The clamping assembly includes a motor 4 18, which is fixedly connected to the side wall of the shell 17. A gear 3 19 is rotatably connected inside the shell 17. The output end of the motor 4 18 is fixedly connected to the side wall of the gear 3 19, and the gear 3 19 is driven to rotate by the motor 4.

[0025] Two movable plates 20 are slidably connected inside the shell 17, and a rack 21 is fixedly connected to the inner wall of the movable plate 20. The two movable plates 20 are respectively located at both ends of gear three 19, which meshes with the rack 21. A clamping arm 23 is fixedly connected to the side wall of the movable plate 20, and the clamping arm 23 is slidably connected to the lower end of the shell 17. When the gear three 19 rotates, the rack 21 drives the two movable plates 20 and the two clamping arms 23 to move relative to each other, so that the two clamping arms 23 clamp the material.

[0026] The lower end of the shell 17 is provided with a plurality of slide grooves 22 corresponding to the clamping arm 23. Slide blocks are fixedly connected on both sides of the clamping arm 23. The slide blocks are slidably connected to the slide grooves 22. Through the cooperation of the slide blocks and the slide grooves 22, the clamping arm 23 is limited to prevent the clamping arm 23 from getting stuck when sliding, thereby stably clamping the material.

[0027] In the utility model, the motor 1 4 drives the gear 2 5 to rotate, and the gear 2 5 drives the gear 1 3 to rotate at the same time, so that the rod body 2 drives the connecting block 8, the rotating block 11 and the shell 17 to rotate, and the clamping assembly is rotated to the side of the material.

[0028] The hydraulic cylinder 6 drives the connecting block 8 to extend, and with the assistance of a plurality of auxiliary telescopic rods 7, the stability of the connecting block 8 after the hydraulic cylinder 6 drives the connecting block 8 to extend is increased, thereby facilitating the adjustment of the length of the equipment.

[0029] The motor 2 9 drives the rotating rod 10 and the rotating block 11 to rotate, and the angle of the shell 17 is adjusted so that the clamping assembly can clamp the object, and then the clamping assembly is driven to rotate by the rod body 2 so that the object is on the side of the spray gun, and then the object is subjected to anti-corrosion spray treatment by the spray gun, and then the shell 17 is driven to rotate by the motor 3 16, so that the object can be fully covered by the spray.

[0030] When the clamping assembly fails and needs maintenance, the screw 14 is rotated by using a hexagonal wrench to move the block 13 and separate it from the slot. After the block 13 moves to the inside of the protrusion 12, the operator slides the plate 15 out from the outside of the protrusion 12, thereby facilitating the disassembly and assembly of the clamping assembly.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mechanical arm for stable clamping, comprising a base (1), characterized in that: The upper end of the base (1) is penetrated by a rod body (2) and is rotatably connected thereto. The ends of the rod body (2) are respectively fixedly connected thereto with a hydraulic cylinder (6) and a plurality of auxiliary telescopic rods (7). The ends of the hydraulic cylinder (6) and the ends of the auxiliary telescopic rods (7) are commonly fixedly connected to a connecting block (8). The end of the connecting block (8) is rotatably connected thereto with a rotating rod (10). The side wall of the rotating rod (10) is fixedly connected to a rotating block (11). The side wall of the connecting block (8) is fixedly connected to a second motor (9). The output end of the second motor (9) is fixedly connected to the end of the rotating rod (10). The lower end of the rotating block (11) is fixedly connected to a protrusion (12). The outer side of the protrusion (12) is slidably connected to a plate (15). The lower end of the plate (15) is fixedly connected thereto with a third motor (16). The output end of the third motor (16) is fixedly connected to a housing (17). A clamping assembly is installed inside the housing (17).

2. A mechanical arm for stable clamping according to claim 1, characterized in that: A gear 1 (3) is fixedly connected to the side wall of the rod body (2), a motor 1 (4) is fixedly connected to the inside of the base (1), a gear 2 (5) is fixedly connected to the output end of the motor 1 (4), and the gear 1 (3) is meshed with the gear 2 (5).

3. A mechanical arm for stable clamping according to claim 1, characterized in that: Blocks (13) are slidably connected inside both sides of the protrusion (12), a screw rod (14) is rotatably connected inside the protrusion (12), the screw rod (14) is threadedly rotatably connected to the two blocks (13), and slots are penetrated on both sides of the plate (15), and the blocks (13) cooperate with the slots.

4. A mechanical arm for stable clamping according to claim 1, characterized in that: The clamping assembly comprises a motor four (18), wherein the motor four (18) is fixedly connected to the side wall of the housing (17), a gear three (19) is rotatably connected inside the housing (17), and an output end of the motor four (18) is fixedly connected to the side wall of the gear three (19).

5. The mechanical arm for stable clamping according to claim 1, characterized in that: Two movable plates (20) are slidably connected inside the shell (17), and the inner wall of the movable plate (20) is fixedly connected with a rack (21). The two movable plates (20) are respectively located at two ends of gear three (19), and the gear three (19) is meshed with the rack (21). The side wall of the movable plate (20) is fixedly connected with a clamping arm (23), and the clamping arm (23) is slidably connected to the lower end of the shell (17).

6. The mechanical arm for stable clamping according to claim 1, characterized in that: A plurality of slide grooves (22) corresponding to the clamping arms (23) are provided at the lower end of the housing (17), and sliding blocks are fixedly connected to both sides of the clamping arms (23), and the sliding blocks are slidably connected to the slide grooves (22).

Images