Chassis structure of mobile robot

Abstract

The utility model relates to the technical field of robots, in particular to a chassis structure of a mobile robot, which comprises a base and two mounting seats, universal wheels are mounted at four corners of the bottom end of the base, mounting grooves are formed in the two mounting seats, four inserting blocks are arranged above the base, and the inserting blocks are inserted into the universal wheels. The top end of the base is provided with a plurality of inserting grooves matched with the inserting blocks, the top end of each inserting block is fixedly provided with a vertical rod, each vertical rod is sleeved with a first spring, each installation base is provided with two through holes matched with the corresponding vertical rod, the top end of the base is provided with a sliding groove for the corresponding installation base to slide, and the four vertical side walls of the base are each fixedly provided with two supports. Protective plates are arranged on the two sides and the other two sides of the base, two transverse rods are fixed to the side wall of each protective plate, each transverse rod is sleeved with a second spring, and a check block is fixed to the end, away from the corresponding protective plate, of each transverse rod; the device is convenient to adjust, and the application range is enlarged.

Description

Technical Field

[0001] This utility model relates to the field of robotics technology, specifically to a mobile robot chassis structure. Background Technology

[0002] Robots are a common term for semi-automatic or fully automatic controlled machines. Automatically controlled machines include all machines that simulate human behavior or thought, or simulate other living beings (such as robotic dogs, robotic cats, etc.). A robot consists of multiple components, among which the chassis, as the robot's supporting structure, provides stability while also enabling movement and directional changes. A search revealed a patent with authorization publication number CN214138766U, entitled "A Mobile Robot Chassis," which includes a base plate. A base is fixedly connected to the top outer wall of the base plate, and the base plate is triangular in shape. Rectangular grooves are formed at the triangular portions of the top outer wall of the base plate. Rotating plates are movably connected to the inner walls of these rectangular grooves, and threaded holes are formed on the top outer walls of the rotating plates. Threaded rods are inserted into the inner walls of these threaded holes, and turntables are connected to the top outer walls of the threaded rods via screws. The outer wall of the base has three equally spaced sliding grooves, and fixed rods are fixedly connected to the inner walls of these grooves. The mobile robot chassis uses a rotating plate to fix the support plate and body via a turntable and threaded rod, simplifying disassembly and maintenance. This avoids the problem of the robot easily wobbling and falling during movement without proper protection and fixing measures, thus improving the efficiency of the base plate. However, in actual use, this mobile robot chassis is not suitable for installing robot bodies of different sizes, and the base plate is easily damaged by impacts during movement. Utility Model Content

[0003] To address the problems in the existing technology, this utility model provides a mobile robot chassis structure.

[0004] The technical solution adopted by this utility model to solve its technical problem is a mobile robot chassis structure, including a base and a mounting base. Universal wheels are installed at the four corners of the bottom of the base. Two mounting bases are provided, each with a mounting groove. Four rectangular arrayed inserts are provided above the base. Multiple slots that fit the inserts are provided at the top of the base. A vertical rod is fixed to the top of each insert, and a first spring is fitted on each vertical rod. Two through holes that fit the vertical rods are provided on each mounting base. A sliding groove for the mounting base to slide is provided at the top of the base. Two supports are fixed to each of the four vertical sidewalls of the base. Protective plates are provided on both sides and the other two sides of the base. Two horizontal bars are fixed to the sidewall of each protective plate, and a second spring is fitted on each horizontal bar. Through holes that fit the horizontal bars are provided on the sidewall of each support away from the base. A stop block is fixed to the end of each horizontal bar away from the protective plate.

[0005] By adopting the above technical solution, the vertical rod is lifted, which drives the insert block to move upward. The bottom end of the insert block disengages from the slot at the top of the base. The sliding mounting base is then adjusted, and the vertical rod is released. The first spring pushes the insert block downward, and the bottom end of the insert block inserts into the slot at the top of the base, preventing the mounting base from shifting. This allows the distance between the two mounting bases to be adjusted according to the size of the robot body and the position of the mounting holes on the robot body. The robot body is then fixed to the mounting base using bolts and nuts. When the base moves, the protective plate provides protection for the base. After an object impacts the protective plate, the protective plate moves towards the base, and the second spring is compressed, preventing the impact force from acting directly on the base, thus protecting the base.

[0006] Specifically, each of the stops is fixed with an air spring on the side wall away from the crossbar, and the end of each air spring away from the stop is connected to the base.

[0007] By adopting the above technical solution and incorporating the air spring, the protective effect is improved.

[0008] Specifically, each of the protective plates has a protective pad fixed to the side wall away from the base.

[0009] By adopting the above technical solution, the protective pad can provide a certain degree of protection for the protective plate.

[0010] Specifically, a pull block is fixed to the top of each of the vertical rods.

[0011] By adopting the above technical solution, the design of the pull block facilitates gripping and lifting the vertical rod.

[0012] Specifically, each of the supports is welded to the base, and the protective plate is welded to the crossbar.

[0013] The beneficial effects of this utility model are:

[0014] (1) The mobile robot chassis structure described in this utility model involves lifting the vertical rod, which causes the insert block to move upward. The bottom end of the insert block disengages from the slot at the top of the base. After adjusting the distance between the two mounting seats by sliding the mounting base, the vertical rod is released, and the first spring pushes the insert block downward. The bottom end of the insert block is inserted into the slot at the top of the base, which can prevent the mounting seats from shifting. This allows the distance between the two mounting seats to be adjusted according to the size of the robot body and the position of the mounting holes on the robot body. The robot body can then be fixed to the mounting seats using bolts and nuts.

[0015] (2) The mobile robot chassis structure described in this utility model provides protection for the base when the base moves. After an object hits the protective plate, the protective plate moves towards the base and the second spring is squeezed, which can prevent the impact force from acting directly on the base and achieve protection for the base. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the mounting base of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the vertical rod, pull block, first spring and insert block of this utility model;

[0020] Figure 4 For the present utility model Figure 1 Enlarged view of the structure at point A in the middle.

[0021] In the diagram: 1. Base; 2. Mounting seat; 3. Protective plate; 4. Protective pad; 5. Insert block; 6. Pull block; 7. Vertical rod; 8. First spring; 9. Horizontal rod; 10. Second spring; 11. Stop block; 12. Support; 13. Air spring. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] To facilitate the installation of robot bodies of different sizes and extend the service life of the base 1, as one embodiment of this utility model, such as... Figures 1 to 4 As shown, the mobile robot chassis structure of this utility model includes a base 1 and a mounting base 2. Universal wheels are installed at the four corners of the bottom of the base 1 (existing technology, specific installation methods will not be described in detail). Two mounting bases 2 are provided, each with a mounting groove. Four rectangular arrayed inserts 5 are arranged above the base 1. Multiple slots that fit the inserts 5 are provided at the top of the base 1. A vertical rod 7 is welded and fixed to the top of each insert 5, and a first spring is fitted onto each vertical rod 7. Spring 8, each of the mounting bases 2 is provided with two through holes adapted to the vertical rod 7, the top of the base 1 is provided with a sliding groove for the mounting base 2 to slide, each of the four vertical side walls of the base 1 is fixed with two supports 12, the base 1 is provided with protective plates 3 on both sides and the other two sides, each of the protective plates 3 is fixed with two horizontal rods 9 on its side wall, each horizontal rod 9 is fitted with a second spring 10, each support 12 is provided with a through hole adapted to the horizontal rod 9 on its side wall away from the base 1, and each horizontal rod 9 is welded and fixed with a stop block 11 at its end away from the protective plate 3.

[0024] In use, lift the vertical rod 7, which moves the insert 5 upward. The bottom end of the insert 5 disengages from the slot at the top of the base 1. Slide the mounting base 2 by hand to adjust the distance between the two mounting bases 2, then release the vertical rod 7. The first spring 8 pushes the insert 5 downward, and the bottom end of the insert 5 inserts into the slot at the top of the base 1, preventing the mounting base 2 from shifting. This allows the distance between the two mounting bases 2 to be adjusted according to the size of the robot body and the position of the mounting holes on the robot body. The robot body can then be fixed to the mounting base 2 using bolts and nuts. When the base 1 moves, the protective plate 3 provides protection for the base 1. After an object hits the protective plate 3, the protective plate 3 moves towards the base 1, and the second spring 10 is compressed, preventing the impact force from acting directly on the base 1, thus protecting the base 1.

[0025] To improve the protective effect, for example, such as Figure 4 As shown, each of the stop blocks 11 has an air spring 13 (air spring 13 is existing technology, and its specific principle will not be described in detail) fixed to the side wall away from the crossbar 9 by bolts, and the end of each air spring 13 away from the stop block 11 is connected to the base 1 by bolts.

[0026] To protect the protective plate 3, for example, such as Figure 1 As shown, each of the protective plates 3 has a protective pad 4 fixed to its sidewall away from the base 1 by adhesive.

[0027] To facilitate lifting the vertical rod 7, for example, as shown... Figure 3 As shown, a pull block 6 is welded and fixed to the top of each of the vertical rods 7.

[0028] Each of the supports 12 is welded to the base 1, and the protective plate 3 is welded to the crossbar 9.

[0029] In use, the upper lifting block 6 and the vertical rod 7 drive the insertion block 5 to move upward. The bottom end of the insertion block 5 disengages from the slot at the top of the base 1. After adjusting the distance between the two mounting seats 2 by sliding the mounting seat 2 by hand, the lifting block 6 is released. The first spring 8 pushes the insertion block 5 downward, and the bottom end of the insertion block 5 is inserted into the slot at the top of the base 1, which can prevent the mounting seat 2 from shifting. Thus, the distance between the two mounting seats 2 can be adjusted according to the size of the robot body and the position of the mounting holes on the robot body. The robot body can then be fixed on the mounting seat 2 using bolts and nuts.

[0030] When the base 1 moves, the protective plate 3 provides protection for the base 1. After the object hits the protective pad 4, the protective plate 3 moves towards the base 1. The second spring 10 is squeezed by the protective plate 3, and the air spring 13 is squeezed by the stop block 11, which can prevent the impact force from acting directly on the base 1 and achieve protection for the base 1.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents. Contents not described in detail in this utility model are considered prior art known to those skilled in the art.

Claims

1. A mobile robot chassis structure, characterized in that, The device includes a base (1) and mounting bases (2). The base (1) has casters installed at its four corners. There are two mounting bases (2), each with a mounting groove. The base (1) has four rectangularly arranged inserts (5) on its top. The top of the base (1) has multiple slots that fit the inserts (5). Each insert (5) has a vertical rod (7) fixed to its top. Each vertical rod (7) is fitted with a first spring (8). Each mounting base (2) has two slots that fit the vertical rods (7). The base (1) has a sliding groove at the top for the mounting base (2) to slide. Two supports (12) are fixed on each of the four vertical sidewalls of the base (1). Protective plates (3) are provided on both sides and the other two sides of the base (1). Two crossbars (9) are fixed on the sidewall of each protective plate (3). A second spring (10) is fitted on each crossbar (9). A through hole that matches the crossbar (9) is provided on the sidewall of each support (12) away from the base (1). A stop block (11) is fixed at the end of each crossbar (9) away from the protective plate (3).

2. The mobile robot chassis structure according to claim 1, characterized in that, Each of the stops (11) has an air spring (13) fixed to the side wall away from the crossbar (9), and the end of each air spring (13) away from the stop (11) is connected to the base (1).

3. The mobile robot chassis structure according to claim 1, characterized in that, Each of the protective plates (3) has a protective pad (4) fixed to the side wall away from the base (1).

4. The mobile robot chassis structure according to claim 1, characterized in that, Each of the vertical rods (7) has a pull block (6) fixed to its top end.

5. The mobile robot chassis structure according to claim 1, characterized in that, Each of the supports (12) is welded to the base (1), and the protective plate (3) is welded to the crossbar (9).

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