Lever mechanical arm for auxiliary carrying

Abstract

The utility model discloses a lever mechanical arm for auxiliary carrying, which comprises a base, a rotating seat is mounted on the base, a first mechanical arm is mounted on the rotating seat, a second mechanical arm is rotatably connected onto the first mechanical arm, an air cylinder is connected between the first mechanical arm and the second mechanical arm, and a cavity is formed in the second mechanical arm. A cavity is formed in the second mechanical arm, an extension arm is slidably mounted in the cavity, a grabbing mechanism is arranged on the side, away from the second mechanical arm, of the extension arm, a plurality of tooth grooves are formed in the wall face of the bottom of the extension arm, transmission gears are arranged in the tooth grooves in a matched mode, the transmission gears are rotatably mounted in the cavity, and the extension arm moves on the second mechanical arm, so that the grabbing mechanism can be synchronously driven to move; and under the cooperation effect of the rotating base, the first mechanical arm and the second mechanical arm, the grabbing range of the grabbing mechanism can be further expanded, the large-range object carrying requirement is met, and the practicability of the mechanical arm is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical arm technical field especially relates to a lever mechanical arm for auxiliary carrying. BACKGROUND

[0002] A hard stick that can rotate around a fixed point under the action of force is a lever. In life, according to needs, the lever can be of any shape. Seesaw, scissors, wrench, crowbar, fishing rod, etc. are all levers. A mechanical arm refers to a complex system with high precision, multiple inputs and outputs, high nonlinearity and strong coupling. Due to its unique operation flexibility, it has been widely used in industrial assembly, safety explosion-proof and other fields.

[0003] The utility model discloses a kind of lever mechanical arms for auxiliary carrying, including mounting plate, the rotating base is fixedly installed on the top of mounting plate, the mechanical arm main body is arranged on the top of rotating base, the mechanical arm main body includes first mechanical arm, second mechanical arm, third mechanical arm and fourth mechanical arm, the second mechanical arm is rotatably installed on first mechanical arm, the third mechanical arm is rotatably installed on second mechanical arm, the fourth mechanical arm is rotatably installed on third mechanical arm, mechanical gripper assembly, the mechanical gripper assembly is arranged on fourth mechanical arm. The utility model has reasonable structure, and L-shaped rod is slid in sliding groove by the extension of cylinder output end, can drive rotating shaft rotation, so that the bottom of two clamping jaws is close to each other or far away, so that different specifications volume of material can be carried, so that the application range of equipment is greatly improved.

[0004] The above-mentioned utility model discloses the mechanical arm through electric telescopic rod and promotes third mechanical arm rotation to raise the height of clamping jaw, but the moving distance of clamping jaw in horizontal direction is reduced after the height of clamping jaw is increased, and it is difficult to cope with the carrying demand of goods at a distance and high place. SUMMARY

[0005] The utility model aims at providing a kind of lever mechanical arm for auxiliary carrying to solve the problem that it is difficult to cope with the carrying demand of goods at a distance and high place in the above-mentioned background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: an auxiliary carrying lever mechanical arm, including base, the base is installed with rotating seat, rotating seat is installed with first mechanical arm, first mechanical arm is rotatably connected with second mechanical arm, and the first mechanical arm is connected with the cylinder between second mechanical arm, the cavity is seted up in second mechanical arm, the cavity is slidably installed with extension arm, the side of extension arm away from second mechanical arm is provided with grabbing mechanism, a plurality of toothing grooves are seted up on the bottom wall surface of extension arm, the transmission gear is adapted in toothing groove, the transmission gear is rotatably installed in the cavity, and the center of transmission gear is connected with the output of first servo motor, and first servo motor is installed on the outer surface of second mechanical arm.

[0007] Preferably, the extension arm is provided with a connecting groove on both sides, and a connecting strip is installed on both sides of the cavity and matched with the connecting groove.

[0008] Preferably, the extension arm is provided with a connecting groove on both sides, and a connecting strip is installed on both sides of the cavity and matched with the connecting groove.

[0009] Preferably, the second connecting piece is provided with a third servo motor, and the output shaft of the third servo motor is connected with the grabbing mechanism.

[0010] Preferably, the second connecting piece is provided with a third servo motor, and the output shaft of the third servo motor is connected with the grabbing mechanism.

[0011] Preferably, the bottom of the base is provided with a plurality of universal wheels.

[0012] Preferably, the universal wheel is provided with a self-locking structure and a damping structure.

[0013] The utility model has the advantages that:

[0014] In the utility model, the extension arm is moved on the second mechanical arm, which can drive the grabbing mechanism to move synchronously, thereby expanding the moving distance of the grabbing mechanism. Under the cooperation of the rotating seat, the first mechanical arm and the second mechanical arm, the grabbing range of the grabbing mechanism can be further expanded, thereby meeting the large-range article carrying requirement and further improving the practicability of the mechanical arm. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model provides a kind of auxiliary carrying lever mechanical arm's three-dimensional structure schematic view;

[0016] Figure 2The utility model provides a kind of auxiliary carrying lever mechanical arm's extension arm and the section structure schematic diagram of transmission gear;

[0017] Figure 3 The utility model provides a kind of auxiliary carrying lever mechanical arm's second connecting piece's section structure schematic diagram;

[0018] Figure 4 The utility model provides a kind of auxiliary carrying lever mechanical arm's extension arm and the section structure schematic diagram of transmission gear.

[0019] In the drawing: 1, base; 2, rotating seat; 3, first mechanical arm; 4, second mechanical arm; 5, cylinder; 6, cavity; 7, extension arm; 8, tooth slot; 9, transmission gear; 10, first servo motor; 11, grabbing mechanism; 12, first connecting piece; 13, second connecting piece; 14, second servo motor; 15, third servo motor; 16, installation slot; 17, connecting plate; 18, connecting slot; 19, connecting strip; 20, universal wheel. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0021] Reference Figures 1-4 A kind of auxiliary carrying lever mechanical arm, including base 1, base 1 is installed with rotating seat 2, rotating seat 2 is installed with first mechanical arm 3, first mechanical arm 3 is rotatably connected with second mechanical arm 4, cylinder 5 is connected between first mechanical arm 3 and second mechanical arm 4, second mechanical arm 4 is internally provided with cavity 6, cavity 6 is slidably installed with extension arm 7, extension arm 7 is provided with grabbing mechanism 11 on the side away from second mechanical arm 4, the bottom wall surface of extension arm 7 is provided with a plurality of tooth slots 8, tooth slot 8 is adapted with transmission gear 9, transmission gear 9 is rotatably installed in cavity 6, and the center of transmission gear 9 is connected with the output end of first servo motor 10, and first servo motor 10 is installed on the outer surface of second mechanical arm 4.

[0022] When the mechanical arm is used, the output shaft of the cylinder 5 is extended by starting the cylinder 5, so as to push the second mechanical arm 4, so that the second mechanical arm 4 is at the height required for carrying, by controlling the rotation of the rotating seat 2, the first mechanical arm 3 and the second mechanical arm 4 are synchronously rotated, so that the grabbing mechanism 11 can be at the required angle, facilitating the carrying of the articles, when the position of the grabbing mechanism 11 is adjusted to be appropriate but the distance cannot match the articles to be grabbed, the first servo motor 10 is started, the first servo motor 10 rotates to drive the transmission gear 9 to synchronously rotate, so that the transmission gear 9 moves to drive the extension arm 7 to synchronously move, so that the extension arm 7 drives the grabbing mechanism 11 to move away from the second mechanical arm 4, so as to extend the moving distance of the grabbing mechanism 11, so that the grabbing mechanism 11 can carry the articles which are far away, the mechanical arm moves on the second mechanical arm 4 through the extension arm 7, which can synchronously drive the grabbing mechanism 11 to move, so as to expand the moving distance of the grabbing mechanism 11, under the cooperation of the rotating seat 2 and the first mechanical arm 3 and the second mechanical arm 4, the grabbing range of the grabbing mechanism 11 can be further expanded, so as to meet the requirement of carrying articles in a large range and further improve the practicability of the mechanical arm.

[0023] Specifically, in the embodiment, the two sides of the extension arm 7 are provided with connecting grooves 18, and the two sides of the cavity 6 are provided with connecting strips 19, the connecting strips 19 are matched with the connecting grooves 18, so that the extension arm 7 can be slidably connected to the cavity 6 through the matching of the connecting strips 19 and the connecting grooves 18, so as to provide support for the extension arm 7, avoid the extension arm 7 from being inclined due to gravity when moving, causing wear of the transmission gear 9 and affecting the meshing relationship between the extension arm 7 and the transmission gear 9.

[0024] Specifically, in the embodiment, the first connecting piece 12 is installed at one end of the extension arm 7 away from the second mechanical arm 4, the second connecting piece 13 is rotatably connected to the first connecting piece 12, the grabbing mechanism 11 is arranged on the second connecting piece 13, and the second servo motor 14 is installed on the outer wall of the first connecting piece 12, the output shaft of the second servo motor 14 is connected to one side wall surface of the second connecting piece 13, so that the worker can start the second servo motor 14 when using, the second servo motor 14 is rotated to drive the second connecting piece 13 to synchronously rotate, and then the second connecting piece 13 drives the grabbing mechanism 11 to rotate along the vertical direction, so as to adjust the orientation of the grabbing mechanism 11 in the vertical direction.

[0025] Specifically, in the embodiment, the third servo motor 15 is installed in the second connecting piece 13, the output shaft of the third servo motor 15 is connected with the grabbing mechanism 11, so that the third servo motor 15 can drive the grabbing mechanism 11 to rotate synchronously when the third servo motor 15 operates, thereby the angle of the grabbing mechanism 11 can be adjusted along the horizontal direction, so that the grabbing mechanism 11 can grab the articles at multiple angles, thereby improving the grabbing diversity of the grabbing mechanism 11.

[0026] Specifically, in the embodiment, the second connecting piece 13 is internally provided with the mounting groove 16, and the second connecting piece 13 is provided with the connecting plate 17 at the end away from the first connecting piece 12, the grabbing mechanism 11 is located at the end of the connecting plate 17 away from the second connecting piece 13, so that the third servo motor 15 can be mounted on the second connecting piece 13 through the mounting groove 16, the third servo motor 15 is mounted on the connecting plate 17, and the output shaft of the third servo motor 15 penetrates through the connecting plate 17 and is connected with the grabbing mechanism 11, thereby achieving the purpose that the third servo motor 15 drives the grabbing mechanism 11 to move.

[0027] Specifically, in the embodiment, the bottom of the base 1 is provided with a plurality of universal wheels 20, so that the staff can control the mechanical arm to move to the target position through the universal wheels 20, thereby avoiding the waste of manpower and material resources when the mechanical arm is carried, and improving the flexibility when the mechanical arm carries the articles.

[0028] Specifically, in the embodiment, the universal wheel 20 is provided with a self-locking structure and a damping structure, so that the mechanical arm can be locked by the self-locking structure when the mechanical arm needs to be in a stationary state, thereby avoiding the movement of the mechanical arm, and improving the safety of the mechanical arm when the mechanical arm is used, and through the setting of the damping structure, the vibration force of the mechanical arm when carrying the articles is reduced, thereby improving the accuracy of the mechanical arm when carrying the articles.

[0029] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A lever-type robotic arm for auxiliary handling, comprising a base (1), a rotating seat (2) mounted on the base (1), a first robotic arm (3) mounted on the rotating seat (2), a second robotic arm (4) rotatably connected to the first robotic arm (3), and a cylinder (5) connecting the first robotic arm (3) and the second robotic arm (4), characterized in that: The second mechanical arm (4) is internally provided with a cavity (6), the cavity (6) is slidably provided with an extension arm (7), the extension arm (7) is provided with a grabbing mechanism (11) on the side away from the second mechanical arm (4), a plurality of tooth grooves (8) are formed on the bottom wall surface of the extension arm (7), the tooth grooves (8) are adapted with transmission gears (9), the transmission gears (9) are rotatably installed in the cavity (6), and the center of the transmission gears (9) is connected with the output end of the first servo motor (10), and the first servo motor (10) is installed on the outer surface of the second mechanical arm (4).

2. The levered robotic arm for assisting in carrying according to claim 1, wherein: The two sides of the extension arm (7) are provided with connecting grooves (18), and the two sides of the cavity (6) are provided with connecting strips (19) matched with the connecting grooves (18).

3. The levered mechanical arm for assisting in carrying according to claim 1, wherein: The extension arm (7) is provided with a first connecting piece (12) away from the second mechanical arm (4), the first connecting piece (12) is rotatably connected with a second connecting piece (13), the grabbing mechanism (11) is arranged on the second connecting piece (13), and the second servo motor (14) is arranged on the outer wall of the first connecting piece (12).

4. The levered mechanical arm for assisting in carrying according to claim 3, wherein: The second connecting piece (13) is provided with a third servo motor (15), and the output shaft of the third servo motor (15) is connected with the grabbing mechanism (11).

5. The levered mechanical arm for assisting in carrying according to claim 3, wherein: The second connecting piece (13) is internally provided with an installation groove (16), and the second connecting piece (13) is provided with a connecting plate (17) away from the first connecting piece (12), and the grabbing mechanism (11) is located at the end of the connecting plate (17) away from the second connecting piece (13).

6. The levered robotic arm for assisting in carrying according to claim 1, wherein: The bottom of the base (1) is provided with a plurality of universal wheels (20).

7. The levered robotic arm for assisting in carrying according to claim 6, wherein: The universal wheel (20) is provided with a self-locking structure and a damping structure.

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