Mechanical arm

Abstract

The utility model discloses a mechanical arm which is applied to the field of robots and comprises a bottom plate, a machine arm is arranged on the top of the bottom plate, a clamping jaw assembly is arranged on the top of the machine arm, and a buffering assembly is arranged on one side of the machine arm. The screw is connected to an output shaft of the servo motor in a bolted mode, the two clamping jaw gears are rotationally connected to the interior of the clamping jaw base and meshed with one side of the screw, one end of the connecting plate is fixedly connected to the tops of the clamping jaw gears, the alloy clamping jaw is hinged to the other end of the connecting plate, and one end of the linkage plate is hinged to the interior of the clamping jaw base. The fingers are hinged to one sides of the alloy clamping jaws, the plastic pads are clamped to one sides of the fingers, the other ends of the linkage plates are hinged to one sides of the alloy clamping jaws, objects can be clamped by arranging the clamping jaw assembly, the overall structure is simple, the basic clamping width can be adjusted when the objects are clamped, and the objects are prevented from being damaged; the buffering assembly is arranged to prevent damage caused by falling of the vehicle arms, and the vehicle arms and the clamping assembly are protected from falling suddenly to crush objects.

Description

Technical Field

[0001] The utility model belongs to the technical field of robots, and particularly relates to a mechanical arm. Background Art

[0002] A robotic arm can imitate certain movements and functions of human hands and arms. It is an automatic operating device used to grab, move objects or operate tools according to a fixed program. The robotic arm is the earliest industrial robot and also the earliest modern robot. It can replace heavy human labor to achieve mechanization and automation of production, and can operate in harmful environments to protect personal safety. Therefore, it is widely used in machinery manufacturing, metallurgy, electronics, light industry, atomic energy and other departments. However, general robotic arms have problems in terms of control, such as insufficient control accuracy and complex hardware structure, which brings inconvenience to people's use. In this regard, we propose a robotic arm.

[0003] The Chinese utility model patent currently announced as CN213731839U discloses a mechanical arm, including a base, an upper outer surface of the base is provided with an electric energy terminal and a No. 1 linkage rod, and the No. 1 linkage rod is located on one side of the electric energy terminal, a telescopic mechanism is provided on the upper outer surface of the electric energy terminal, a rotating mechanism is provided on the upper outer surface of the telescopic mechanism, a No. 2 linkage rod and a connecting arm are provided on the outer surface of one end of the rotating mechanism, and the No. 2 linkage rod is located on the upper outer surface of the connecting arm, and a fixed hand mechanism is provided on the outer surface of one end of the connecting arm. The mechanical arm described in this utility model greatly improves the activity space of the fixed gripper through the provided mechanism, and moves under the drive of the linkage plate to pick up or put down objects, bringing convenience to people, and the telescopic column and the synchronous column are driven to retract together through the provided telescopic mechanism, and the operation is simple and easy, which is convenient for people to use.

[0004] Although this patent allows the use of a robotic arm for clamping, its structure is complex and difficult to repair, which affects the time for staff to repair and maintain the robotic arm. Utility Model Content

[0005] The utility model aims to provide a mechanical arm, which solves the problem that the mechanical arm has a complex structure and is difficult to repair, which affects the time for workers to repair and maintain the mechanical arm.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: a mechanical arm, comprising a base plate, a mechanical arm is arranged on the top of the base plate, a clamping claw assembly is arranged on the top of the machine arm, and a buffer assembly is arranged on one side of the machine arm; the clamping claw assembly comprises a movable seat, a fixed plate, a servo motor, a clamping claw seat, a screw, a clamping claw gear, a connecting plate, an alloy clamping claw, a linkage plate, a finger and a plastic pad, the movable seat is hinged to the top of the machine arm, the fixed plate is bolted to the top of the movable seat, the servo motor is bolted to the inside of the fixed plate, the clamping claw seat is bolted to one side of the servo motor, the screw is bolted to the output shaft of the servo motor, the two clamping claw gears are rotatably connected to the inside of the clamping claw seat and meshed with one side of the screw, one end of the connecting plate is fixedly connected to the top of the clamping claw gear, the alloy clamping claw is hinged to the other end of the connecting plate, one end of the linkage plate is hinged to the inside of the clamping claw seat, the finger is hinged to one side of the alloy clamping claw, the plastic pad is clamped to one side of the finger, and the other end of the linkage plate is hinged to one side of the alloy clamping claw.

[0007] The above technical scheme is adopted, by setting a movable seat, a fixed plate, a servo motor, a clamping jaw seat, a screw, a clamping jaw gear, a connecting plate, an alloy clamping jaw, a linkage plate, fingers and a plastic pad. When in use, the fixed plate on the movable seat controls the servo motor, and the servo motor rotates the screw, and the screw rotates forward to rotate the clamping jaw gear. The connecting plate fixedly connected to the clamping jaw gear pulls one end of the alloy clamping jaw, and the linkage plate pulls the middle part of the alloy clamping jaw. At this time, the claw tip position of the alloy clamping jaw clamps the object to be clamped, and the fingers are fixed at the claw tip position of the alloy clamping jaw. The fingers and the plastic pad can prevent the surface of the object from being easily damaged when clamping the object.

[0008] The utility model is further configured as follows: the buffer assembly includes a damping plate and a damper, the damping plate is arranged on one side of the base plate, the bottom of the damper is hinged to the top of the damping plate, and the top of the damper is hinged to one side of the machine arm.

[0009] By adopting the above technical solution, by arranging the damping plate and the damper, the arm can be cushioned when it falls due to a fault, thereby preventing the alloy clamping claws from being damaged and the objects to be clamped from being smashed due to the sudden fall of the arm.

[0010] The utility model is further configured as follows: a pneumatic telescopic rod is hinged on the top of the bottom plate, the top of the pneumatic telescopic rod is hinged on one side of the movable seat, and the pneumatic telescopic rod is located on one side of the machine arm.

[0011] By adopting the above technical solution, the pneumatic telescopic rod can be controlled when being extended or retracted by arranging the pneumatic telescopic rod.

[0012] The utility model is further configured as follows: one side of the alloy clamping claw and the finger is provided with a serration part for increasing the friction between the alloy clamping claw and the finger.

[0013] By adopting the above technical solution, the friction force of the alloy clamping claws and fingers is increased by providing the serrated parts.

[0014] The utility model is further configured as follows: a color indicator light is arranged on one side of the machine arm, and the color of the color indicator light is dark yellow.

[0015] By adopting the above technical solution, a color indicator light can be set to warn the staff and prevent them from getting close to the robotic arm when the robotic arm is working.

[0016] The utility model is further configured as follows: a mounting plate for mounting the bottom plate is arranged at the bottom of the bottom plate, a mounting hole is opened at the top of the mounting plate, and the mounting hole penetrates to the bottom of the bottom plate.

[0017] By adopting the above technical solution, the bottom plate is fixed in the area of ​​the reserved screw holes by arranging the mounting plate and the mounting holes, and external bolts can pass through the mounting holes.

[0018] The utility model is further configured as follows: a plastic seat is arranged at the bottom of the bottom plate, and an anti-slip groove is arranged at the bottom of the plastic seat.

[0019] By adopting the above technical solution, the bottom can be made non-slip after installation by arranging the plastic seat and the anti-skid groove, and the scratches between the bottom plate and the placement area can be reduced.

[0020] In summary, the utility model has the following beneficial effects:

[0021] By setting the clamping claw assembly, objects can be clamped, and the overall structure is simple. When clamping objects, the basic clamping width can be adjusted to prevent damage to the objects.

[0022] The buffer component is provided to prevent the machine arm from falling and causing damage, and to protect the machine arm and the clamping component from falling suddenly and damaging objects.

[0023] Based on the above improvements, the overall technical effect achieved by the device is that it has a simple structure and is easy to maintain, and at the same time it plays a buffering role when damaged to prevent falling and damaging the objects that need to be clamped. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a structural schematic diagram of a left-side stereoscopic section of the utility model;

[0026] Figure 3 It is a schematic structural diagram of a top-view three-dimensional cross-section of the utility model.

[0027] In the figure, 1, base plate; 2, machine arm; 3, clamping jaw assembly; 4, buffer assembly; 5, pneumatic telescopic rod; 6, serrated portion; 7, color indicator light; 8, mounting plate; 9, mounting hole; 10, plastic seat; 11, anti-slip groove; 301, movable seat; 302, fixed plate; 303, servo motor; 304, clamping jaw seat; 305, screw rod; 306, clamping jaw gear; 307, alloy clamping jaw; 308, linkage plate; 309, finger; 310, plastic pad; 311, connecting plate; 401, damping plate; 402, damper. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0029] Example:

[0030] See also Figure 1-Figure 3The utility model provides a technical solution: a mechanical arm, including a base plate 1, a mechanical arm 2 is arranged on the top of the base plate 1, a clamping claw assembly 3 is arranged on the top of the mechanical arm 2, and a buffer assembly 4 is arranged on one side of the mechanical arm 2; the clamping claw assembly 3 includes a movable seat 301, a fixed plate 302, a servo motor 303, a clamping claw seat 304, a screw 305, a clamping claw gear 306, a connecting plate 311, an alloy clamping claw 307, a linkage plate 308, a finger 309 and a plastic pad 310, and the movable seat 301 is hinged to the top of the mechanical arm 2, The fixed plate 302 is bolted to the top of the movable seat 301, the servo motor 303 is bolted to the inside of the fixed plate 302, the clamping claw seat 304 is bolted to one side of the servo motor 303, the screw rod 305 is bolted to the output shaft of the servo motor 303, the two clamping claw gears 306 are rotatably connected to the inside of the clamping claw seat 304 and meshed with one side of the screw rod 305, one end of the connecting plate 311 is fixedly connected to the top of the clamping claw gear 306, the alloy clamping claw 307 is hinged to the other end of the connecting plate 311, and the linkage plate 30 One end of the movable seat 301, the fixed plate 302, the servo motor 303, the clamping jaw seat 304, the screw 305, the clamping jaw gear 306, the connecting plate 311, the alloy clamping jaw 307, the linkage plate 308, the finger 309 and the plastic pad 310 are hinged to the inside of the clamping jaw seat 304, the finger 309 is hinged to one side of the alloy clamping jaw 307, the plastic pad 310 is clamped to one side of the finger 309, and the other end of the linkage plate 308 is hinged to one side of the alloy clamping jaw 307. By setting the movable seat 301, the fixed plate 302, the servo motor 303, the clamping jaw seat 304, the screw 305, the clamping jaw gear 306, the connecting plate 311, the alloy clamping jaw 307, the linkage plate 308, the finger 309 and the plastic pad 310, the fixed plate 302 on the movable seat 301 is connected to the movable seat 301 when in use. Plate 302 controls the servo motor 303. At this time, the servo motor 303 rotates the screw 305. At this time, the screw 305 rotates forward to rotate the clamp gear 306. The connecting plate 311 fixedly connected to the clamp gear 306 pulls one end of the alloy clamp 307. At this time, the linkage plate 308 pulls the middle part of the alloy clamp 307. At this time, the claw tip position of the alloy clamp 307 clamps the object to be clamped, and the finger 309 is fixed at the claw tip position of the alloy clamp 307. The finger 309 and the plastic pad 310 can prevent the surface of the object from being damaged when clamping the object.

[0031] refer to Figure 3 The buffer assembly 4 includes a damping plate 401 and a damper 402. The damping plate 401 is arranged on one side of the base plate 1. The bottom of the damper 402 is hinged to the top of the damping plate 401. The top of the damper 402 is hinged to one side of the arm 2. By arranging the damping plate 401 and the damper 402, the arm 2 can be buffered when it falls due to a fault, thereby preventing the alloy clamp 307 from being damaged and smashing the objects to be clamped caused by the sudden fall of the arm 2.

[0032] refer to Figure 2A pneumatic telescopic rod 5 is hinged on the top of the bottom plate 1, and the top of the pneumatic telescopic rod 5 is hinged on one side of the movable seat 301. The pneumatic telescopic rod 5 is located on one side of the machine arm 2. By setting the pneumatic telescopic rod 5, the pneumatic telescopic rod 5 can be controlled when it is extended or retracted.

[0033] refer to Figure 3 The alloy clamping jaw 307 and one side of the finger 309 are both provided with a serrated portion 6 for increasing the friction between the alloy clamping jaw 307 and the finger 309. By providing the serrated portion 6, the friction between the alloy clamping jaw 307 and the finger 309 is increased.

[0034] refer to Figure 1 A color indicator light 7 is provided on one side of the arm 2. The color of the color indicator light 7 is dark yellow. By providing the color indicator light 7, a warning can be given to the staff to prevent the staff from approaching the robotic arm when the robotic arm is working.

[0035] refer to Figure 1 A mounting plate 8 for mounting the base plate 1 is provided at the bottom of the base plate 1, and a mounting hole 9 is provided at the top of the mounting plate 8. The mounting hole 9 penetrates to the bottom of the base plate 1. By providing the mounting plate 8 and the mounting hole 9, the base plate 1 is fixed in the area of ​​the reserved screw holes, and external bolts can pass through the mounting hole 9.

[0036] refer to Figure 1 A plastic seat 10 is provided at the bottom of the base plate 1, and an anti-skid groove 11 is provided at the bottom of the plastic seat 10. By providing the plastic seat 10 and the anti-skid groove 11, the bottom can be non-slip after installation, and scratches between the base plate 1 and the placement area can be reduced.

[0037] Brief description of the use process: When in use, the fixed plate 302 on the movable seat 301 controls the servo motor 303, and the servo motor 303 rotates the screw rod 305. At this time, the screw rod 305 rotates forward to rotate the clamping gear 306. The connecting plate 311 fixed to the clamping gear 306 pulls one end of the alloy clamping claw 307. At this time, the linkage plate 308 pulls the middle of the alloy clamping claw 307. At this time, the claw tip position of the alloy clamping claw 307 clamps the object to be clamped, and the finger 309 is fixed at the claw tip position of the alloy clamping claw 307. The finger 309 and the plastic pad 310 can not easily damage the surface of the object when clamping the object. By setting the damping plate 401 and the damper 402, when the machine arm 2 fails and falls The pneumatic telescopic rod 5 is hinged on the top of the bottom plate 1, and the top of the pneumatic telescopic rod 5 is hinged on one side of the movable seat 301. The pneumatic telescopic rod 5 is located on one side of the bottom plate 2. The pneumatic telescopic rod 5 can be controlled when it is extended and retracted by setting the pneumatic telescopic rod 5. The serrated portion 6 can be used to increase the friction of the alloy clamping claw 307 and the finger 309 to grasp the object. The mounting plate 8 and the mounting hole 9 can be used to fix the bottom plate 1 in the area of ​​the reserved screw hole, and the external bolts can pass through the mounting hole 9. The plastic seat 10 and the anti-skid groove 11 can be used to prevent the bottom from slipping after installation, and prevent scratches between the bottom plate 1 and the placement area.

[0038] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A robotic arm, comprising a base plate (1), characterized in that: An arm (2) is arranged on the top of the base plate (1), a clamping claw assembly (3) is arranged on the top of the arm (2), and a buffer assembly (4) is arranged on one side of the arm (2); The clamping jaw assembly (3) comprises a movable seat (301), a fixed plate (302), a servo motor (303), a clamping jaw seat (304), a screw (305), a clamping jaw gear (306), a connecting plate (311), an alloy clamping jaw (307), a linkage plate (308), a finger (309) and a plastic pad (310), wherein the movable seat (301) is hinged to the top of the machine arm (2), the fixed plate (302) is bolted to the top of the movable seat (301), the servo motor (303) is bolted to the inside of the fixed plate (302), the clamping jaw seat (304) is bolted to one side of the servo motor (303), and the screw (305) is bolted to the inner side of the fixed plate (302). On the output shaft of the servo motor (303), the two clamping gears (306) are rotatably connected to the inside of the clamping claw seat (304) and meshed with one side of the screw (305), one end of the connecting plate (311) is fixedly connected to the top of the clamping claw gear (306), the alloy clamping claw (307) is hinged to the other end of the connecting plate (311), one end of the linkage plate (308) is hinged to the inside of the clamping claw seat (304), the finger (309) is hinged to one side of the alloy clamping claw (307), the plastic pad (310) is clamped to one side of the finger (309), and the other end of the linkage plate (308) is hinged to one side of the alloy clamping claw (307).

2. A robotic arm according to claim 1, characterized in that: The buffer assembly (4) comprises a damping plate (401) and a damper (402), wherein the damping plate (401) is arranged on one side of the base plate (1), the bottom of the damper (402) is hinged to the top of the damping plate (401), and the top of the damper (402) is hinged to one side of the machine arm (2).

3. A robotic arm according to claim 1, characterized in that: A pneumatic telescopic rod (5) is hinged on the top of the base plate (1), the top of the pneumatic telescopic rod (5) is hinged on one side of the movable seat (301), and the pneumatic telescopic rod (5) is located on one side of the machine arm (2).

4. A robotic arm according to claim 1, characterized in that: The alloy clamping claw (307) and one side of the finger (309) are both provided with a sawtooth portion (6) for increasing the friction force between the alloy clamping claw (307) and the finger (309).

5. A robotic arm according to claim 1, characterized in that: A color indicator light (7) is provided on one side of the machine arm (2), and the color of the color indicator light (7) is dark yellow.

6. A robotic arm according to claim 1, characterized in that: A mounting plate (8) for mounting the bottom plate (1) is provided at the bottom of the bottom plate (1), a mounting hole (9) is provided at the top of the mounting plate (8), and the mounting hole (9) penetrates to the bottom of the bottom plate (1).

7. A robotic arm according to claim 1, characterized in that: A plastic seat (10) is provided at the bottom of the base plate (1), and an anti-slip groove (11) is provided at the bottom of the plastic seat (10).

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