Adjustable mechanical arm teaching structure

Abstract

The utility model provides an adjustable mechanical arm teaching structure, and mainly relates to the technical field of teaching equipment. An adjustable mechanical arm teaching structure comprises a base and a mechanical arm model body, a supporting plate is hinged to the top of the base, a screw is arranged at the top of the base in a matched mode, the outer ring of the screw is in threaded connection with a sliding block, connecting rods are symmetrically hinged to the two side faces of the sliding block, and the other ends of the connecting rods are hinged to the bottom of the supporting plate. A rotating shaft is fixedly arranged at the top of the supporting plate, a sleeve is fixedly arranged at the top of the rotating shaft, and a mechanical arm model body is fixedly arranged at the top of the sleeve. The mechanical arm model has the beneficial effects that the inclination angle of the mechanical arm model body can be continuously adjusted through a thread transmission mechanism of the screw rod and the sliding block; the mechanical arm model body can rotate at any angle within the 360-degree horizontal range through a worm and gear transmission mechanism.

Description

Technical Field

[0001] This utility model mainly relates to the field of teaching equipment technology, specifically an adjustable robotic arm teaching structure. Background Technology

[0002] In mechanical engineering and automation education, robotic arm models are important teaching aids used to demonstrate the motion principles, structural design, and control logic of robotic arms. However, existing robotic arm teaching devices generally suffer from the following technical problems: limited angle adjustment function; traditional robotic arm models are mostly fixedly mounted on a horizontal base, only enabling joint rotation of the robotic arm body, lacking overall tilt angle adjustment function, which limits the scope of teaching demonstration scenarios.

[0003] Secondly, the structural stability is insufficient. When the robotic arm model is tilted or rotated, the existing devices mostly rely on simple joints or sliding structures, lacking effective limit and anti-fall-off designs, which pose a risk of equipment tipping over and affect the safety and reliability of the teaching process. Utility Model Content

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] An adjustable robotic arm teaching structure includes a base and a robotic arm model body. A support plate is hinged to the top of the base, and a screw is fitted on the top of the base. A slider is threaded to the outer ring of the screw. Connecting rods are symmetrically hinged to both sides of the slider. The other end of the connecting rod is hinged to the bottom of the support plate. A rotating shaft is fixedly installed on the top of the support plate, and a sleeve is fixedly installed on the top of the rotating shaft. The robotic arm model body is fixedly installed on the top of the sleeve.

[0006] The top of the rotating shaft abuts against the top of the inner wall of the sleeve. A bearing is fitted on the outer ring of the rotating shaft. The outer ring of the bearing abuts against the inner wall of the sleeve. A retaining ring is fixedly installed on the outer ring of the rotating shaft near the bottom of the bearing. A stop block is symmetrically fixedly installed on the sleeve. The stop block passes through the sleeve and abuts against the bottom of the retaining ring.

[0007] The outer ring of the sleeve is provided with a worm gear, and a worm is rotatably provided on the top of the support plate. The worm is meshed with the worm gear, and a first handwheel is fixedly provided at the end of the worm.

[0008] The screw is fixedly mounted on the top of the base by two bearing seats, and a second handwheel is fixedly mounted on the end of the screw.

[0009] Support legs are fixedly installed at the four corners of the bottom of the base, and a swivel wheel is fixedly installed at the bottom of each support leg. A counterweight is fixedly installed at the bottom of the base near the second handwheel.

[0010] Compared with the existing technology, the beneficial effects of this utility model are:

[0011] This invention features a simple structure, making it easy to install and use. Through a threaded transmission mechanism of screw and slider, combined with a hinged structure of connecting rod and support plate, the tilt angle of the robotic arm model can be continuously adjusted. Simultaneously, the worm gear transmission mechanism, composed of a worm wheel and worm on the outer ring of the sleeve, allows the robotic arm model to rotate at any angle within a 360° horizontal range by rotating the first handwheel. This dual-dimensional adjustment function of tilt angle and horizontal rotation allows teaching demonstrations to transcend the limitations of a fixed horizontal plane, simulating the working state of the robotic arm in different spatial postures. It is particularly suitable for demonstrating teaching content such as complex spatial trajectory planning and multi-angle grasping, significantly expanding the coverage of teaching scenarios.

[0012] The bearing ensures smooth rotation of the sleeve, while the rigid contact structure between the retaining ring and the stop block effectively restricts the axial displacement of the sleeve, avoiding the risk of mechanical parts falling off due to excessive tilt angle; when the robot arm model body tilts, the reverse torque generated by the counterweight block and the rectangular force of the robot arm's center of gravity offset are dynamically balanced. Attached Figure Description

[0013] Appendix Figure 1 This is a first-view structural schematic diagram of the present invention;

[0014] Appendix Figure 2 This is a schematic diagram of the main structure of this utility model;

[0015] Appendix Figure 3 This is a schematic diagram of the second-view structure of this utility model;

[0016] Appendix Figure 4 This is a cross-sectional structural schematic diagram of the present invention;

[0017] Appendix Figure 5 This is a schematic diagram of the stop block structure of this utility model.

[0018] The following are the labels in the attached diagram: 1. Base; 2. Robotic arm model body; 3. Support plate; 4. Screw; 5. Slider; 6. Connecting rod; 7. Rotating shaft; 8. Sleeve; 9. Bearing; 10. Stop; 11. Worm gear; 12. Second handwheel; 13. Counterweight. Detailed Implementation

[0019] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0020] Referring to the accompanying drawings, an adjustable robotic arm teaching structure includes a base 1 and a robotic arm model body 2. A support plate 3 is hinged to the top of the base 1, and a screw 4 is fitted on the top of the base 1. A slider 5 is threaded onto the outer ring of the screw 4. Connecting rods 6 are symmetrically hinged to both sides of the slider 5. The other end of the connecting rods 6 is hinged to the bottom of the support plate 3. A rotating shaft 7 is fixedly mounted on the top of the support plate 3, and a sleeve 8 is fixedly mounted on the top of the rotating shaft 7. The robotic arm model body 2 is fixedly mounted on the top of the sleeve 8. The rotation of the screw 4 causes the slider 5 to move, thereby causing the support plate 3 to tilt.

[0021] The top of the rotating shaft 7 abuts against the top of the inner wall of the sleeve 8. The outer ring of the rotating shaft 7 is fitted with a bearing 9. The outer ring of the bearing 9 abuts against the inner wall of the sleeve 8. A retaining ring is fixedly installed on the outer ring of the rotating shaft 7 near the bottom of the bearing 9. A stop block 10 is symmetrically fixed on the sleeve 8. The stop block 10 passes through the sleeve 8 and abuts against the bottom of the retaining ring. This structural design prevents the sleeve 8 from falling off when the support plate 3 is tilted.

[0022] The outer ring of the sleeve 8 is provided with a worm gear, and the top of the support plate 3 is rotatably provided with a worm 11. The worm 11 is meshed with the worm gear, and a first handwheel is fixedly provided at the end of the worm 11. This structural design drives the sleeve 8 to rotate.

[0023] The screw 4 is fixedly mounted on the top of the base 1 by two bearing seats, and a second handwheel 12 is fixedly mounted on the end of the screw 4.

[0024] Support legs are fixedly installed at the four corners of the bottom of the base 1, and a universal wheel is fixedly installed at the bottom of each support leg. A counterweight 13 is fixedly installed at the bottom of the base 1 near the second handwheel 12. This structural design ensures the structural balance of the robotic arm model body 2 when it is tilted.

[0025] When the tilt angle of the robotic arm model body 2 needs to be adjusted to adapt to different teaching demonstration needs, the second handwheel 12 is turned to drive the screw 4 to rotate, so that the slider 5 moves along the axial direction of the screw 4. As the slider 5 moves, the tilt angle of the support plate 3 can be adjusted arbitrarily to achieve the ideal teaching demonstration angle. When the rotation direction of the robotic arm model body 2 needs to be adjusted to conduct teaching demonstrations from different directions, the first handwheel is turned to mesh with the worm gear on the outer ring of the sleeve 8, so that the sleeve 8 rotates around the rotating shaft 7, thereby driving the robotic arm model body 2 to rotate synchronously, thereby realizing the angle adjustment of the robotic arm model body 2 in the horizontal direction.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An adjustable robotic arm teaching structure, comprising a base (1) and a robotic arm model body (2), characterized in that: The base (1) is hinged to the top of the support plate (3), and the base (1) is fitted with a screw (4). The screw (4) is threaded to the outer ring of the slider (5). The slider (5) is symmetrically hinged to the two sides of the slider (6). The other end of the connecting rod (6) is hinged to the bottom of the support plate (3). The support plate (3) is fixedly fitted with a rotating shaft (7). The rotating shaft (7) is fixedly fitted with a sleeve (8). The sleeve (8) is fixedly fitted with the mechanical arm model body (2).

2. The adjustable robotic arm teaching structure according to claim 1, characterized in that: The top of the rotating shaft (7) abuts against the top of the inner wall of the sleeve (8). The outer ring of the rotating shaft (7) is fitted with a bearing (9). The outer ring of the bearing (9) abuts against the inner wall of the sleeve (8). A retaining ring is fixedly installed on the outer ring of the rotating shaft (7) near the bottom of the bearing (9). A stop block (10) is symmetrically fixed on the sleeve (8). The stop block (10) passes through the sleeve (8) and abuts against the bottom of the retaining ring.

3. The adjustable robotic arm teaching structure according to claim 1, characterized in that: The outer ring of the sleeve (8) is provided with a worm gear, and the top of the support plate (3) is rotatably provided with a worm (11). The worm (11) is meshed with the worm gear, and the end of the worm (11) is fixedly provided with a first handwheel.

4. The adjustable robotic arm teaching structure according to claim 1, characterized in that: The screw (4) is fixedly mounted on the top of the base (1) by two bearing seats, and a second handwheel (12) is fixedly mounted at the end of the screw (4).

5. The adjustable robotic arm teaching structure according to claim 4, characterized in that: The base (1) has four fixed support legs at the bottom corners, and each support leg has a fixed omnidirectional wheel at the bottom. A counterweight (13) is fixed at the bottom of the base (1) near the second handwheel (12).

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