Auxiliary anti-rollover device for navigation robot

Abstract

The invention discloses an auxiliary anti-rollover device for a navigation robot, and belongs to the field of navigation robots, the auxiliary anti-rollover device comprises a machine body, the machine body is composed of an upper machine shell and a lower machine shell, the outer part of the lower machine shell is provided with uniformly distributed anti-falling plates, the inner part of each anti-falling plate is provided with a movably connected distance adjusting plate, the top of each distance adjusting plate is movably connected with the lower machine shell; a supporting plate is arranged in the lower machine shell, evenly-distributed grooves are formed in the supporting plate, gravity rolling balls are arranged in the grooves, evenly-distributed through holes are formed in the side wall of the lower machine shell, an inclination correction assembly penetrating through the through holes is arranged between the supporting plate and the anti-toppling plate, a chassis is arranged at the bottom of the lower machine shell, and externally-connected electrically-controlled moving wheels are arranged at the bottom of the chassis. The stability of the robot in the walking process is improved, the situation that the robot turns over is effectively reduced, and the robot is effectively protected.

Description

Technical Field

[0001] The invention relates to the field of navigation robots, and in particular to an auxiliary anti-rollover device for navigation robots. Background Art

[0002] Navigation robots are intelligent devices that integrate modern information functions such as guidance, navigation, shopping guide, interaction, big data collection, and cloud computing analysis;

[0003] Navigation robots are generally equipped with components such as lidar and cameras. They use sensors such as lidar and cameras to perceive the surrounding environment in real time and use advanced algorithms for path planning to ensure that they can move to the target location autonomously and safely. At the same time, they can also change directions according to changes in road names and inform users of distance and turning information.

[0004] Mainly used in public places such as airports, railway stations, shopping malls, etc., navigation robots can provide tourists with route guidance, information query and other services, improving the service quality and user satisfaction of the venue.

[0005] However, when the navigation robot is walking in a complex or changeable environment, such as a shopping mall with a huge flow of people, it may not be able to accurately perceive the dynamic changes of surrounding obstacles and pedestrians, or the robot's sensors may be blocked or interfered with. For example, when the lidar is blocked, its data will not work properly, affecting the robot's positioning and navigation accuracy, resulting in collisions or overturning, causing damage to the robot. Summary of the invention

[0006] The purpose of the present invention is to provide an auxiliary anti-rollover device for a navigation robot, which effectively solves the problem that the existing robots are easily affected in some complex or changeable environments, and the positioning and navigation accuracy of the robots is easily affected, thereby causing collisions or rollovers.

[0007] The technical solution of the present invention is as follows:

[0008] An auxiliary anti-rollover device for a navigation robot comprises a body, wherein the body consists of an upper shell and a lower shell, the outer portion of the lower shell is provided with evenly distributed anti-rollover plates, the inner portion of the anti-rollover plates is provided with an movably connected distance-adjusting plate, the top of the distance-adjusting plate is movably connected to the lower shell, the inner portion of the lower shell is provided with a support plate, the support plate is provided with evenly distributed grooves, the grooves are provided with gravity rolling balls, the side walls of the lower shell are provided with evenly distributed through holes, a tilt correction component passing through the through holes is provided between the support plate and the anti-rollover plates, the bottom of the lower shell is provided with a chassis, and the bottom of the chassis is provided with externally electrically controlled moving wheels.

[0009] Preferably, a connecting plate is provided on the top of the lower shell body, and the connecting plate and the lower shell body are detachably connected, the upper shell body is fixedly connected to the connecting plate, the lower shell body is an annular cylinder with a hollow interior, the anti-falling plate and the distance adjusting plate are arranged in a circle around the lower shell body, and the number of the anti-falling plate and the distance adjusting plate is not less than four.

[0010] Preferably, the anti-falling plate and the distance-adjusting plate are obliquely arranged on the periphery of the lower machine shell, and the straight-line distance from the lower machine shell becomes farther downwards, and a distance-controlling component is provided between the anti-falling plate and the distance-adjusting plate, and the distance-controlling component includes a matching groove, a positioning hole, an insertion rod, a return spring and a fixing frame.

[0011] Preferably, the matching groove is opened downward from the top of the anti-overturning plate, the distance adjusting plate and the matching groove match each other, the positioning holes are opened at intervals on the side wall of the distance adjusting plate, the fixing frame is fixedly connected to the side wall of the anti-overturning plate, the plug plate is movably connected to the fixing frame and inserted into the positioning hole, and the return spring is connected to the plug rod and inside the fixing frame.

[0012] Preferably, the outer wall of the lower housing and above the through hole are provided with mounting blocks distributed in a ring shape, a rotating shaft connected through the mounting block is provided inside the mounting block, two ends of the distance adjusting plate are movably connected to two ends of the rotating shaft, a limit plate is provided on the front end surface of the mounting block, the limit plate limits the outward tilt angle of the distance adjusting plate, and the bottom of the anti-falling plate is provided with sliding wheels distributed at intervals, and the lowest point of the bottom of the sliding wheel is higher than the moving wheel.

[0013] Preferably, the area of ​​the groove is between one third and one quarter of the surface area of ​​the gravity rolling ball, a vertical support column is provided at the top center of gravity of the chassis, a movably connected rotating ball is provided at the top of the support column, and the top of the rotating ball has a flat surface and is fixedly connected to the support plate.

[0014] Preferably, the tilt correction assembly includes a positioning shaft, a correction wheel, an anti-deflection rope and a positioning ring, the positioning shaft is fixedly connected to two opposite side walls in the through hole and is horizontally arranged, the correction wheel is located in the through hole and is rotatably connected to the positioning shaft, and the vertical height of the correction wheel is located above the support plate and the anti-falling plate.

[0015] Preferably, one end of the anti-deflection rope is fixedly connected to the side wall of the support plate, and the other end is wrapped around the correction wheel and fixedly connected to the positioning ring, and the positioning rings are distributed at intervals on a surface of the anti-reverse plate close to the lower machine shell.

[0016] Preferably, a ring-shaped drop groove is provided on the top of the chassis and on the periphery of the support column, the inner wall of the drop groove is hemispherical, and the drop groove is provided with spaced-apart sensor sheets, the sensor sheets are electrically connected to the gravity rolling ball, and the bottom of the drop groove is provided with spaced-apart cylindrical plugs, the cylindrical plugs are inserted into the drop groove from the bottom of the chassis, and the cylindrical plug is located between two of the sensor sheets.

[0017] Preferably, a vertical limiting groove is provided on the inner wall of the lower housing, and a movably connected limiting plate is provided in the limiting groove, and the limiting plate is located above the gravity rolling ball when it descends to the lowest point of the limiting groove.

[0018] The advantages of the present invention are:

[0019] 1. The present invention provides an anti-fall plate around the outer periphery of the lower housing of the navigation robot, and the anti-fall plate is tilted outward. When the navigation robot encounters an accident and wants to tilt and roll over, the sliding wheels at the bottom of the anti-fall plate contact the ground, so that the anti-fall plate drives the distance adjusting plate to change its angle. When the bottom of the anti-fall plate moves outward, it pulls the anti-deflection rope to move. The other end of the anti-deflection rope that is subjected to the force is fixedly connected to the support plate, thereby applying force to the support plate, causing the support plate to tilt and in the opposite direction of the guide robot, so that the gravity rolling ball above falls down. In the process of gradually rolling down to the drop groove, a force for returning the direction is gradually applied to the bottom of the navigation robot, thereby effectively helping the robot to return to the right angle and avoiding its rollover, thereby improving the safety of the robot. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the overall navigation robot and the anti-rollover device of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure of the lower housing and through holes and other components of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of the lower housing, anti-falling plate, distance adjustment plate and other components of the present invention;

[0023] Figure 4 The internal structure of the lower housing of the present invention is schematically shown. Figure 1 ;

[0024] Figure 5 The internal structure of the lower housing of the present invention is schematically shown. Figure 2 ;

[0025] Figure 6 It is a schematic diagram of the structure of the internal limiting plate and chassis of the lower housing of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the spacing plate, anti-falling plate and other components of the present invention.

[0027] Figure numerals: 1. body; 1-1. upper housing; 1-2. lower housing; 2. anti-falling plate; 3. distance adjusting plate; 4. supporting plate; 5. groove; 6. gravity rolling ball; 7. through hole; 8. chassis; 9. moving wheel; 10. connecting plate; 11. matching groove; 12. positioning hole; 13. plug; 14. reset spring; 15. fixing frame; 16. mounting block; 17. rotating shaft; 18. limiting plate; 19. sliding wheel; 20. supporting column; 21. rotating ball; 22. positioning shaft; 23. correction wheel; 24. anti-deviation rope; 25. positioning ring; 26. falling groove; 27. induction plate; 28. cylindrical plug; 29. ​​limiting groove; 30. limiting plate. DETAILED DESCRIPTION

[0028] 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 the embodiments.

[0029] like Figure 1-7 As shown, the present invention provides an auxiliary anti-rollover device for a navigation robot, which includes a body 1, which is composed of an upper shell 1-1 and a lower shell 1-2. The outside of the lower shell 1-2 is provided with an evenly distributed anti-overturning plate 2, and the inside of the anti-overturning plate 2 is provided with a movably connected distance adjusting plate 3. The top of the distance adjusting plate 3 is movably connected to the lower shell 1-2. The inside of the lower shell 1-2 is provided with a support plate 4, and the support plate 4 is provided with evenly distributed grooves 5. A gravity rolling ball 6 is provided in the groove 5. The side wall of the lower shell 1-2 is provided with evenly distributed through holes 7, and a tilt correction component passing through the through holes 7 is provided between the support plate 4 and the anti-overturning plate 2. The bottom of the lower shell 1-2 is provided with a chassis 8, and the bottom of the chassis 8 is provided with an externally electrically controlled moving wheel 9.

[0030] It should be noted that, by positioning the anti-fall plate 2 around the outside of the lower housing 1-2 of the navigation robot, the anti-fall plate is tilted outward. When the navigation robot encounters an accident and wants to tilt and roll over, the sliding wheel 19 at the bottom of the anti-fall plate 2 contacts the ground, so that the anti-fall plate 2 drives the distance adjustment plate 3 to change the angle. When the bottom of the anti-fall plate 2 moves outward, the anti-deflection rope 24 is pulled to move. The other end of the anti-deflection rope 24 is fixedly connected to the support plate 4, thereby applying force to the support plate 4, causing the support plate 4 to tilt and in the opposite direction of the navigation robot, thereby causing the gravity ball 6 above to fall. In the process of gradually rolling down to the drop groove 26, a force for returning the direction is gradually applied to the bottom of the navigation robot, thereby effectively helping the robot to return to the correct angle and avoiding its rollover, thereby improving the safety of the robot.

[0031] The moving wheel 9 is electrically controlled, so that the machine body 1 can be automatically moved under the drive of electricity.

[0032] In this embodiment, a connecting plate 10 is provided on the top of the lower housing 1-2, and the connecting plate 10 and the lower housing 1-2 are detachably connected. The upper housing 1-1 is fixedly connected to the connecting plate 10, and the lower housing 1-2 is an annular cylinder with a hollow interior. The anti-falling plate 2 and the distance adjusting plate 3 are arranged in a circle around the lower housing, and the number of the anti-falling plates and the distance adjusting plates 3 is not less than four.

[0033] It should be noted that the connecting plate 10 and the lower casing 1-2 are connected in a disassembly manner and may be a threaded connection manner. The number of the anti-falling plates 2 and the distance-adjusting plates 3 is set to be no less than four, so that when the machine body 1 encounters a tipping situation, the anti-falling plates 2 can support the machine body 1, effectively preventing the situation where the support is insufficient.

[0034] In this embodiment, the anti-overturning plate 2 and the distance-adjusting plate 3 are obliquely arranged on the periphery of the lower machine housing 1-2, and the straight-line distance from the lower machine housing 1-2 increases as they go downwards. A distance-controlling component is provided between the anti-overturning plate 2 and the distance-adjusting plate 3, and the distance-controlling component includes a matching groove 11, a positioning hole 12, an insertion rod 13, a return spring 14 and a fixing frame 15.

[0035] In this embodiment, the matching groove 11 is opened downward from the top of the anti-overturning plate 2, the distance adjusting plate 3 and the matching groove 11 match each other, the positioning holes 12 are opened at intervals on the side wall of the distance adjusting plate 3, the fixed frame 15 is fixedly connected to the side wall of the anti-overturning plate 2, the plug plate is movably connected to the fixed frame 15 and inserted into the positioning hole 12, and the reset spring 14 is connected to the plug rod 13 and is inside the fixed frame 15.

[0036] It should be noted that the depth of the matching groove 11 is greater than the length of the distance adjusting plate 3, and the distance adjusting plate 3 is slidably connected in the matching groove 11. In the initial state, the return spring 14 is in an extended state, and the insertion rod 13 is inserted into the positioning hole 12, thereby realizing the fixation between the distance adjusting plate 3 and the anti-reversal plate 2, making the two an integrated structure.

[0037] In this embodiment, an annular mounting block 16 is provided on the outer wall of the lower housing 1-2 and above the through hole 7, a rotating shaft 17 is provided inside the mounting block 16, two ends of the distance adjusting plate 3 are movably connected to the two ends of the rotating shaft 17, a limit plate 18 is provided on the front end surface of the mounting block 16, the limit plate 18 limits the outward tilt angle of the distance adjusting plate 3, and the bottom of the anti-falling plate 2 is provided with sliding wheels 19 distributed at intervals, and the lowest point of the bottom of the sliding wheel 19 is higher than the moving wheel 9.

[0038] It should be noted that the rotating shaft 17 can rotate on the two mounting blocks 16, and the distance adjusting plate 3 can rotate around the rotating shaft 17 under the connection thereto, wherein the limiting plate 18 and the mounting block 16 are fixedly connected, and the front end of the limiting plate 18 is tilted downward. When the distance adjusting plate 3 rotates around the rotating shaft 17 to a certain angle, it will be restricted by the distance adjusting plate 3, so that the distance adjusting plate 3 will not rotate any more, thereby achieving a certain degree of support for the machine body 1;

[0039] By setting a sliding wheel at the bottom of the anti-falling plate 2, the anti-falling plate 2 can tilt outward normally when it contacts the ground. The initial setting height is higher than the moving wheel 9, so that the anti-falling plate 2 will not interfere with the body 1 when the body 1 does not fall over.

[0040] In this embodiment, the area of ​​the groove 5 is between one-third and one-quarter of the surface area of ​​the gravity rolling ball 6. A vertical support column 20 is provided at the center of gravity of the top of the chassis 8. A movably connected rotating ball 21 is provided at the top of the support column 20. The top of the rotating ball 21 has a flat surface and is fixedly connected to the support plate 4.

[0041] It should be noted that the area of ​​the groove 5 is between one third and one fourth of the surface area of ​​the gravity ball 6, so that after the support plate 4 is tilted by force, the gravity ball 6 can roll out of the groove 5 to avoid the situation where it will not fall out;

[0042] By providing the rotating ball 21 , the rotating ball 21 is fixedly connected to the supporting plate 4 , so that the supporting plate 4 can be changed in any direction on the rotating ball 21 .

[0043] In this embodiment, the tilt correction assembly includes a positioning shaft 22, a correction wheel 23, an anti-deflection rope 24 and a positioning ring 25. The positioning shaft 22 is fixedly connected to the two opposite side walls in the through hole 7 and is horizontally arranged. The correction wheel 23 is located in the through hole 7 and is rotatably connected to the positioning shaft 22. The vertical height of the correction wheel 23 is located above the support plate 4 and the anti-falling plate 2.

[0044] It should be noted that by setting the height of the correction wheel 23 above the support plate 4 and the anti-falling plate 2, the anti-deflection rope 24 passes around the correction wheel 23 and the whole is in an inverted U shape. In this way, the anti-falling plate 2 will pull the anti-deflection rope 24 to move after the angle is offset.

[0045] In this embodiment, one end of the anti-deflection rope 24 is fixedly connected to the side wall of the support plate 4, and the other end is wrapped around the correction wheel 23 and fixedly connected to the positioning ring 25. The positioning rings 25 are distributed at intervals on the side of the anti-reverse plate 2 close to the lower machine casing 1-2.

[0046] It should be noted that the positioning ring 25 is fixedly connected to the anti-falling plate 2, and the anti-deflection rope 24 can be fixed to the positioning ring 25 by tying.

[0047] In this embodiment, a ring-shaped drop groove 26 is provided on the top of the chassis 8 and on the periphery of the support column 20. The inner wall of the drop groove 26 is hemispherical. The drop groove 26 is provided with spaced-apart sensor sheets 27. The sensor sheets 27 are electrically connected to the gravity ball 6. The bottom of the drop groove 26 is provided with spaced-apart cylindrical plugs 28. The cylindrical plugs 28 are inserted into the drop groove 26 from the bottom of the chassis 8, and the cylindrical plugs 28 are located between the two sensor sheets 27.

[0048] It should be noted that after the support plate 4 tilts to a certain degree, the gravity ball 6 will fall on the support plate 4 and fall into the drop groove 26, thereby generating a force opposite to the tilt direction of the machine body 1, effectively helping the machine body 1 to return to the center. The provided induction sheet 27 can be electrically connected to the gravity ball 6 after it falls, so as to notify the staff. The provided cylindrical plug 28 is movably inserted into the chassis 8. After the gravity ball 6 falls, the gravity ball 6 can be taken out of the chassis 8 and replaced on the support plate 4 by removing the cylindrical plug 28.

[0049] In this embodiment, a vertical limiting groove 29 is provided on the inner wall of the lower housing 1-2, and a movably connected limiting plate 30 is provided in the limiting groove. When the limiting plate 30 drops to the lowest point of the limiting groove, it is located above the gravity ball 6.

[0050] It should be noted that, by providing the limiting groove 29, the limiting plate 30 can be easily placed into the lower housing 1-2, and the limiting plate 30 is located above the gravity ball 6, so that the gravity ball 6 will not fall directly.

[0051] Detailed usage and effects of the above embodiments:

[0052] Under normal circumstances, the navigation robot realizes automatic movement driven by the moving wheels 9. When the robot cannot maintain balance in an unexpected situation, it will fall over. The outer part of the lower housing 1-2 is provided with an anti-falling plate 2 surrounding it, and a sliding wheel 19 is provided at the bottom of the anti-falling plate 2. The sliding wheel will slide on the ground. At this time, the force applied by the lower half housing is transmitted to the anti-falling plate 2, so that the anti-falling plate 2 tilts outward, which can provide a certain degree of support for the lower half housing, ensuring that the body 1 will not fall over.

[0053] At the same time, the anti-falling plate 2 is integrated with the distance-adjusting plate 3 under the connection of the distance-control component, driving the distance-adjusting plate 3 to tilt together. The anti-deflection rope 24 is fixedly connected to the anti-falling plate 2 at this time. After the anti-falling plate 2 moves outward, it drives the anti-deflection rope 24 to move outward. The other end of the anti-deflection rope 24 bypasses the correction wheel 23 and is connected to the support plate 4. At this time, the support plate 4 is pulled to realize the angle change on the rotating ball 21. The pulling force of the anti-deflection rope 24 will cause the support plate 4 to tilt. When it tilts to a certain angle, the gravity ball 6 on the support plate 4 will roll out in the groove 5 and fall into the drop groove 26 on the lower chassis 8. At this time, the mass of the gravity ball 6 is relatively large, and it falls down and falls into the drop groove 26 and remains motionless. The applied force can help the lower housing 1-2 to correct the angle, thereby effectively avoiding the tilt of the body 1 and improving the safety of the navigation robot.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary anti-rollover device for a navigation robot, characterized in that: The invention comprises a machine body (1), wherein the machine body (1) is composed of an upper machine shell (1-1) and a lower machine shell (1-2); the outer portion of the lower machine shell (1-2) is provided with an evenly distributed anti-falling plate (2); the inner portion of the anti-falling plate (2) is provided with an movably connected distance adjusting plate (3); the top of the distance adjusting plate (3) is movably connected to the lower machine shell (1-2); the inner portion of the lower machine shell (1-2) is provided with a supporting plate (4); the supporting plate (4) is provided with evenly distributed grooves (5); a gravity rolling ball (6) is provided in the groove (5); the side wall of the lower machine shell (1-2) is provided with evenly distributed through holes (7); a tilt correction component passing through the through holes (7) is provided between the supporting plate (4) and the anti-falling plate (2); the bottom of the lower machine shell (1-2) is provided with a chassis (8); the bottom of the chassis (8) is provided with an externally electrically controlled moving wheel (9).

2. The auxiliary anti-rollover device for a navigation robot according to claim 1, characterized in that: A connecting plate (10) is provided on the top of the lower housing (1-2), and the connecting plate (10) and the lower housing (1-2) are detachably connected. The upper housing (1-1) is fixedly connected to the connecting plate (10), and the lower housing (1-2) is an annular cylinder with a hollow interior. The anti-falling plate (2) and the distance-adjusting plate (3) are arranged in a circle around the lower housing (1-2), and the number of the anti-falling plate 2 and the distance-adjusting plate (3) is not less than four.

3. The auxiliary anti-rollover device for a navigation robot according to claim 1, characterized in that: The anti-falling plate (2) and the distance-adjusting plate (3) are arranged obliquely on the periphery of the lower machine housing (1-2), and the straight-line distance from the lower machine housing (1-2) increases as they go downwards. A distance-controlling component is provided between the anti-falling plate (2) and the distance-adjusting plate (3), and the distance-controlling component comprises a matching groove (11), a positioning hole (12), an insertion rod (13), a return spring (14) and a fixing frame (15).

4. The auxiliary anti-rollover device for a navigation robot according to claim 3, characterized in that: The matching groove (11) is opened downward from the top of the anti-falling plate (2), the distance adjusting plate (3) and the matching groove (11) match each other, the positioning holes (12) are opened at intervals on the side wall of the distance adjusting plate (3), the fixing frame (15) is fixedly connected to the side wall of the anti-falling plate 2, the plug plate is movably connected to the fixing frame (15) and inserted into the positioning hole (12), and the return spring (14) is connected to the plug rod (13) and is inside the fixing frame (15).

5. The auxiliary anti-rollover device for a navigation robot according to claim 4, characterized in that: The outer wall of the lower housing (1-2) and above the through hole (7) are provided with an annularly distributed mounting block (16), a through-connected rotating shaft (17) is provided in the mounting block (16), two ends of the distance adjusting plate (3) are movably connected to the two ends of the rotating shaft (17), a limiting plate (18) is provided on the front end surface of the mounting block (16), and the limiting plate (18) limits the outward tilting angle of the distance adjusting plate (3), and the bottom of the anti-falling plate (2) is provided with sliding wheels (19) distributed at intervals, and the lowest point of the bottom of the sliding wheel (19) is higher than the moving wheel (9).

6. The auxiliary anti-rollover device for a navigation robot according to claim 1, characterized in that: The area of ​​the groove (5) is between one third and one quarter of the surface area of ​​the gravity rolling ball (6); a vertical support column (20) is provided at the center of gravity of the top of the chassis (8); a movably connected rotating ball (21) is provided at the top of the support column (20); the top of the rotating ball (21) has a flat surface and is fixedly connected to the support plate (4).

7. The auxiliary anti-rollover device for a navigation robot according to claim 1, characterized in that: The tilt correction assembly comprises a positioning shaft (22), a correction wheel (23), an anti-deflection rope (24) and a positioning ring (25); the positioning shaft (22) is fixedly connected to two opposite side walls in the through hole (7) and is horizontally arranged; the correction wheel (23) is located in the through hole (7) and is rotatably connected to the positioning shaft (22); and the vertical height of the correction wheel (23) is located above the support plate (4) and the anti-fall plate (2).

8. The auxiliary anti-rollover device for a navigation robot according to claim 7, characterized in that: One end of the anti-deflection rope (24) is fixedly connected to the side wall of the support plate (4), and the other end is wound around the correction wheel (23) and fixedly connected to the positioning ring (25). The positioning rings (25) are distributed at intervals on a surface of the anti-reverse plate 2 close to the lower machine casing (1-2).

9. The auxiliary anti-rollover device for a navigation robot according to claim 6, characterized in that: A ring-shaped drop groove (26) is provided at the top of the chassis (8) and on the periphery of the support column (20); the inner wall of the drop groove (26) is hemispherical; induction sheets (27) are arranged at intervals in the drop groove (26); the induction sheets (27) are electrically connected to the gravity rolling ball (6); and columnar plugs (28) are arranged at intervals at the bottom of the drop groove (26); the columnar plugs (28) are inserted into the drop groove (26) from the bottom of the chassis (8), and the columnar plugs (28) are located between two of the induction sheets (27).

10. The auxiliary anti-rollover device for a navigation robot according to claim 1, characterized in that: A vertical limiting groove (29) is provided on the inner wall of the lower housing (1-2), and a movably connected limiting plate (30) is provided in the limiting groove. When the limiting plate (30) descends to the lowest point of the limiting groove, it is located above the gravity rolling ball (6).

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