A walking assembly for a robot

By incorporating retractable spider legs within storage cavities in the robot dog's support legs and controlling their extension using electric actuators, the problem of the robot dog's instability on sand and soft ground was solved, enabling stable walking.

CN224546151UActive Publication Date: 2026-07-24XIAN INT UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XIAN INT UNIV
Filing Date
2025-08-01
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing robotic dogs tend to get stuck when walking on sand and soft ground, causing them to lose their balance and fall.

Method used

The robot's support legs are equipped with storage cavities containing retractable spider legs. These legs are extended by electric actuators and control chips, and their sharp, free ends are inserted into the sand or soil to provide additional support.

Benefits of technology

It effectively prevents the supporting legs from sinking into the sand or soil, keeping the robot dog walking stably and preventing it from falling.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model provides a kind of walking type assembly for robot, including robot main body, robot main body is rectangular structure, and four corners are all equipped with support leg, the middle of support leg is equipped with receiving cavity, receiving cavity is received with the spider foot of increasing robot walking stability in beach and soft soil area, the opening of receiving cavity is hinged with sealing cover plate, the position of support leg side end close to receiving cavity is equipped with mounting thread hole, the angle of screw thread column that spider foot is fixed is threadedly connected in mounting thread hole, its upper end is fixedly connected with electric push rod by screw, the upper end of electric push rod and the inboard wall of receiving cavity are hinged, electric push rod and control chip in robot main body are connected, sealing cover plate includes first cover plate and second cover plate, the utility model can let robot main body also can normally walk on beach and soft land, avoid robot main body to fall down when walking on this terrain because of unstable center of gravity.
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Description

Technical Field

[0001] This utility model relates to the field of robotics technology, and in particular to a walking component for robots. Background Technology

[0002] With the rapid development of intelligent robots, robots that were previously confined to laboratories and factories are beginning to enter people's daily lives, such as robotic dogs. These robots are affordable and interact with people in daily life, adding enjoyment to their lives. However, current robotic dogs can only walk on relatively flat, paved surfaces. When walking on sand or soft ground, their paws easily get stuck, causing instability and resulting in falls. Summary of the Invention

[0003] The purpose of this invention is to provide a walking component for robots to solve the problems mentioned in the background art.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a walking component for a robot, including a robot body, the robot body is a rectangular structure, and a support leg is provided at each of the four corners. A storage cavity is provided in the middle of the support leg. The storage cavity contains a spider leg to increase the stability of the robot walking on sand and soft soil. A sealing cover is hinged to the opening of the storage cavity. A mounting threaded hole is provided on the side end of the support leg near the storage cavity. A threaded post for limiting and fixing the angle of the spider leg is threaded into the mounting threaded hole. The spider leg has an electric push rod fixedly connected to its upper end by screws. The upper end of the electric push rod is hinged to the inner wall of the storage cavity. The electric push rod is connected to the control chip inside the robot body. The sealing cover includes a first cover and a second cover. The first cover has a linkage rod that adjusts the angle of the electric actuator hinged to the side of the electric actuator near the first cover. The top end of the linkage rod is hinged to the side end of the electric actuator.

[0005] Preferably, both the supporting leg and the spider leg are fan-shaped structures, and the angle of the free end of the spider leg is smaller than the angle of the free end of the supporting leg.

[0006] Preferably, a magnetic block is adhered and fixed to the inner wall of the storage cavity, and the magnetic block has a positioning slot on the side facing the spider leg, with the bottom of the positioning slot having an arc-shaped structure.

[0007] Preferably, a positioning strip is welded to the side end of the spider leg. The positioning strip is an iron strip, and the side end of the positioning strip has an arc-shaped structure.

[0008] Preferably, the ends of the first cover plate and the second cover plate are rotatably connected by a pin, and the free end of the second cover plate is provided with a buckle.

[0009] Preferably, the two ends of the threaded post penetrate the second cover plate, and the middle of the threaded post is threaded with two compression nuts, which are located on both sides of the second cover plate.

[0010] The beneficial effects of this utility model are as follows: a receiving cavity is set inside the original supporting leg of the robot dog to accommodate the spider leg. When encountering sand and soft soil, the angle of the spider leg is adjusted and the spider leg is extended. When the robot dog walks, the spider leg, because it is shaped like a spider's leg and its free end is relatively sharp, will first insert into the sand or soft soil. At the same time, the supporting leg is inserted into the sand or soil. Thus, the spider leg provides auxiliary support for the supporting leg, thereby preventing the supporting leg from sinking into the sand or soil and ensuring that the robot dog will not fall due to instability when walking. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the three-dimensional structure of the robot body provided by this utility model.

[0012] Figure 2 This is a schematic diagram showing the connection between the robot body, supporting legs, and spider legs provided by this utility model.

[0013] Figure 3 This is a schematic diagram of the connection between the support leg and the support foot provided by this utility model.

[0014] Figure 4 This is a schematic diagram of the three-dimensional connection of spider legs provided by this utility model.

[0015] In the diagram: 1 Robot body, 2 Support legs, 3 Sealing cover, 31 First cover, 32 Second cover, 4 Spider legs, 5 Storage cavity, 6 Magnetic block, 7 Positioning strip, 8 Electric push rod, 9 Linkage rod, 10 Mounting threaded hole, 11 Threaded post, 12 Compression nut. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0017] See Figure 1-4This invention provides a walking component for a robot, comprising a robot body 1, which is rectangular in shape and has supporting legs 2 at each of the four corners. The robot body 1 adopts a commonly used robot dog design, such as Xiaomi's robot dog. A storage cavity 5 is provided in the middle of each supporting leg 2, containing spider legs 4 to increase the robot's stability on sandy and soft soil areas. A sealing cover 3 is hinged to the opening of the storage cavity 5. A threaded hole is provided on the side of each supporting leg 2 near the storage cavity 5. 10. The threaded hole 10 is internally threaded with a threaded post 11 that limits and fixes the angle of the spider leg 4. The upper end of the spider leg 4 is fixedly connected to an electric push rod 8 by a screw. The upper end of the electric push rod 8 is hinged to the inner wall of the storage cavity 5. The electric push rod 8 is connected to the control chip in the robot body 1. The sealing cover 3 includes a first cover 31 and a second cover 32. The first cover 31 is hinged to a linkage rod 9 that adjusts the angle of the electric push rod 8 on the side near the electric push rod 8. The top end of the linkage rod 9 is hinged to the side end of the electric push rod 8.

[0018] Both the supporting leg 2 and the spider leg 4 are fan-shaped structures. The angle of the free end of the spider leg 4 is smaller than that of the free end of the supporting leg 2. When the robot body 1 is walking, the spider leg 4, being sharper and having a smaller surface area, will first insert into the sand or soft soil. When the supporting leg 2 comes into contact with the sand or soil, the spider leg 4 will provide support for the supporting leg 2, thereby preventing the supporting leg 2 from sinking into the soil and preventing the robot body 1 from becoming unstable when walking.

[0019] A magnetic block 6 is bonded and fixed to the inner wall of the storage cavity 5. The magnetic block 6 has a positioning groove on the side facing the spider leg 4. The bottom of the positioning groove is arc-shaped. A positioning strip 7 is welded and fixed to the side end of the spider leg 4. The positioning strip 7 is an iron strip and the side end of the positioning strip 7 is arc-shaped. When the spider leg 4 is stored in the storage cavity 5, the positioning strip 7 is engaged with the magnetic block 6, and the magnetic block 6 magnetically fixes the positioning strip 7 and the spider leg 4.

[0020] The ends of the first cover plate 31 and the second cover plate 32 are rotatably connected by a pin. The free end of the second cover plate 32 is provided with a buckle. When the sealing cover plate 3 closes the opening of the storage cavity 5, the second cover plate 32 is locked and fixed to the storage cavity 5 by the buckle. When the spider leg 4 needs to be removed, the second cover plate 32 and the first cover plate 31 are pulled to rotate. The first cover plate 31 drives the electric push rod 8 to rotate through the linkage rod 9, thereby moving the spider leg 4 out of the storage cavity 5.

[0021] The two ends of the threaded post 11 pass through the second cover plate 32. The middle thread of the threaded post 11 is connected to two compression nuts 12. The two compression nuts 12 are located on both sides of the second cover plate 32. The threaded post 11 passes through the second cover plate 32 and its top end is connected to the installation threaded hole 10. The two compression nuts 12 are used to compress and fix the second cover plate 32, thereby limiting and fixing the angle of the spider leg 4.

[0022] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A walking component for a robot, comprising a robot body (1), characterized in that: The robot body (1) has a rectangular structure and is provided with support legs (2) at the four corners. The support legs (2) are provided with a storage cavity (5) in the middle. The storage cavity (5) contains spider legs (4) to increase the stability of the robot when walking on sand and soft soil. The opening of the storage cavity (5) is hinged with a sealing cover plate (3). The side end of the support leg (2) is provided with a threaded hole (10) near the storage cavity (5). The threaded hole (10) is threaded with a threaded post (11) to limit and fix the angle of the spider legs (4). The spider leg (4) has an electric push rod (8) fixedly connected to its upper end by screws. The upper end of the electric push rod (8) is hinged to the inner wall of the storage cavity (5). The electric push rod (8) is connected to the control chip in the robot body (1). The sealing cover (3) includes a first cover (31) and a second cover (32). The first cover (31) has a linkage rod (9) that adjusts the angle of the electric push rod (8) on the side near the electric push rod (8). The top end of the linkage rod (9) is hinged to the side end of the electric push rod (8).

2. The walking component for a robot according to claim 1, characterized in that: Both the supporting leg (2) and the spider leg (4) are fan-shaped structures, and the angle of the free end of the spider leg (4) is smaller than the angle of the free end of the supporting leg (2).

3. A walking component for a robot according to claim 1, characterized in that: A magnetic block (6) is bonded and fixed to the inner wall of the storage cavity (5). The magnetic block (6) has a positioning slot on the side facing the spider leg (4). The bottom of the positioning slot is an arc-shaped structure.

4. A walking component for a robot according to claim 1, characterized in that: The spider leg (4) has a positioning strip (7) welded to its side end. The positioning strip (7) is an iron strip and the side end of the positioning strip (7) has an arc-shaped structure.

5. A walking component for a robot according to claim 1, characterized in that: The ends of the first cover plate (31) and the second cover plate (32) are rotatably connected by a pin, and the free end of the second cover plate (32) is provided with a buckle.

6. A walking component for a robot according to claim 1, characterized in that: The two ends of the threaded post (11) penetrate the second cover plate (32), and the middle thread of the threaded post (11) is connected to two compression nuts (12), which are located on both sides of the second cover plate (32).