Telescopic ground charging brush block device for heavy-load omni-directional AGV robot

Abstract

The invention relates to the technical field of charging devices of heavy-load omni-directional AGV robots, in particular to a telescopic ground charging brush block device for a heavy-load omni-directional AGV robot, which comprises an insulating bottom plate, a connecting rod supporting seat, two groups of connecting rod assemblies, two groups of signal-level conductive columns, two groups of brush block assemblies and a matched ground charging brush plate. In the non-charging process, the brush block shrinks and is prevented from being damaged, and in the charging process, the signal-level conductive column ascends under the acting force of the ground and drives the brush block to stretch out and make contact with a ground brush plate; meanwhile, the two groups of signal-level conductive columns output in-place signals respectively, and it is judged that the AGV arrives at a charging position only when the two groups of signals are triggered at the same time. The device solves the problems that a traditional ground charging brush block is easy to damage and the charging position judgment precision is insufficient, unmanned charging is achieved, and the adaptability and the charging reliability of the AGV under complex working conditions are improved.

Description

Technical Field

[0001] This invention relates to the technical field of charging devices for heavy-duty omnidirectional AGV robots, and more particularly to a telescopic ground charging brush block device for heavy-duty omnidirectional AGV robots. Background Technology

[0002] With the rapid development of logistics, e-commerce, and intelligent manufacturing industries, rising labor costs and various uncontrollable factors (such as difficulty in personnel scheduling, operational safety risks, and fluctuations in production efficiency) have gradually become core pain points restricting efficient operation in various industries. Against this backdrop, unmanned factories, unmanned logistics warehousing, and unmanned delivery systems are gradually replacing traditional manual operation modes, becoming the mainstream direction for industry transformation and development. This trend has driven accelerated innovation in the field of AGV (Automated Guided Vehicle) unmanned logistics equipment, with miniaturized, intelligent, and lightweight AGV products constantly emerging and widely used in various unmanned operation scenarios such as parts transfer, cargo sorting, and warehouse scheduling.

[0003] Since the core value of AGVs lies in achieving fully automated closed-loop operation, unmanned charging becomes a key requirement for ensuring continuous equipment operation. Ground charging, due to its ease of operation, lack of human intervention, and adaptability to most working environments, has become one of the mainstream choices for AGV charging solutions. However, current AGV ground charging solutions on the market generally suffer from two major drawbacks: Firstly, to ensure effective contact with the ground charging components, the electrical contact slider of the ground charging system typically protrudes from the AGV chassis. This design exposes the AGV to significant risks during actual operation. When there are foreign objects (such as metal scraps or packaging debris), obstacles (such as raised ground seams or small tooling parts), or when climbing slopes, the protruding electrical contact slider is highly susceptible to collisions and scratches, leading to damage and deformation. This can not only cause malfunctions in the AGV's electrical system (such as short circuits or poor contact) but also directly prevent the equipment from charging properly, severely shortening the AGV's effective operating time and greatly limiting its application in complex working conditions (such as workshops with many items or warehouses with uneven surfaces). Conversely, if the AGV chassis height is deliberately increased to avoid slider damage, it restricts the flexibility of the low-profile AGV. Low-profile AGVs need to operate in low-ceilinged spaces (such as under shelves or below assembly lines), and an excessively high chassis prevents them from entering designated areas, further limiting their application scenarios.

[0004] Secondly, existing ground charging systems rely on a single sensor or signal to determine whether the AGV has accurately reached the charging position. This results in insufficient detection accuracy, which can easily lead to misjudgments, poor charging contact, or even equipment damage, seriously affecting the reliability and efficiency of charging.

[0005] In summary, the industry urgently needs a new type of ground charging brush block device that can achieve unmanned charging, prevent damage to the ground charging brush block during non-charging conditions, and accurately determine whether the vehicle has correctly arrived at the designated charging position through multiple sets of controls to ensure charging reliability. This solution is based on this need. Through the design of two sets of signal-level conductive columns, it achieves dual accurate judgment of the vehicle charging position, while solving the problem of easy damage to the ground charging brush block, and comprehensively improving the adaptability and charging stability of AGVs under complex working conditions. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a telescopic ground charging brush block device for heavy-duty omnidirectional AGV robots. This solves the technical problems of existing ground charging brush blocks protruding from the chassis and being easily damaged, as well as insufficient accuracy in judging the charging position. It enables unmanned operation of AGV charging, and ensures accurate detection of the charging position through a dual judgment mechanism of two sets of signal-level conductive columns. At the same time, it ensures that the ground charging brush block retracts when not charging to avoid damage, thereby improving the adaptability of AGV to working conditions and the reliability of charging.

[0007] The above objectives are achieved through the following technical solutions: A telescopic ground-filling brush block device for heavy-duty omnidirectional AGV robots includes an insulating base plate. A connecting rod support seat is provided on the surface of the insulating base plate. A first connecting rod assembly and a second connecting rod assembly are movably connected to the left and right sides of the connecting rod support seat. A first signal level conductive post and a first brush block assembly are provided on the first connecting rod assembly, which can be raised and lowered in opposite directions. A second signal level conductive post and a second brush block assembly are provided on the second connecting rod assembly, which can be raised and lowered in opposite directions. When the bottom of the first signal-level conductive post is subjected to an external force, it rises and, through the first connecting rod assembly, drives the first brush block assembly to descend to achieve charging contact. At the same time, the first signal-level conductive post outputs a first positioning signal. After the force on the bottom of the first signal-level conductive post disappears, the first brush block assembly automatically rises and, through the first connecting rod assembly, drives the first signal-level conductive post to descend to achieve charging separation. At the same time, the first signal-level conductive post stops outputting the first positioning signal. When the bottom of the second signal stage conductive post is subjected to external force, it rises and, through the second linkage assembly, drives the second brush block assembly to descend to achieve charging contact. At the same time, the second signal stage conductive post outputs a second positioning signal. After the force on the bottom of the second signal stage conductive post disappears, the second brush block assembly automatically rises and, through the second linkage assembly, drives the second signal stage conductive post to descend to achieve charging separation. At the same time, the second signal stage conductive post stops outputting the second positioning signal. When the first arrival signal and the second arrival signal are output simultaneously, it is determined that the AGV has reached the designated charging position.

[0008] Furthermore, on the insulating base plate, on the left and right sides symmetrical about the connecting rod support seat, there are first signal level conductive post through holes and second signal level conductive post through holes that allow the first signal level conductive post and the second signal level conductive post to pass through. A signal level guide block is provided on the bottom side of the insulating base plate. The signal level guide block has first signal level guide block through holes and second signal level guide block through holes corresponding to the first signal level conductive post through holes and the second signal level conductive post through holes. The signal level guide block is connected to the insulating base plate by screws; The first signal-level conductive post can extend and retract relative to the first signal-level conductive post through hole and the first signal-level guide block through hole, and the second signal-level conductive post can extend and retract relative to the second signal-level conductive post through hole and the second signal-level guide block through hole.

[0009] Furthermore, the first brush block assembly and the second brush block assembly are symmetrically arranged on the front and rear sides of the connecting rod support, and have the same specifications, each including: A conductive brush block is disposed on the lower side of the insulating base plate, and inverted L-shaped spring guide rods are symmetrically arranged at both ends of its top. A brush block guide rod connected to the top of the conductive brush block is arranged between the two spring guide rods. The conductive brush block guide block consists of two conductive brush block guide blocks connected to the insulating base plate by screws. The conductive brush block guide block has a conductive brush block guide hole for fitting the conductive brush block, and a first spring seat with a first spring groove is symmetrically arranged on the side wall of the conductive brush block guide hole. The brush block guide rod is provided with a second spring seat having a second spring groove; The first spring slot and the second spring slot can be used to embed the two ends of the vertically arranged brush block reset spring; In its initial extended state, the brush block reset spring ensures that the conductive brush block is in a retracted state relative to the conductive brush block guide hole, while when the brush block reset spring is compressed, the conductive brush block is in an extended state relative to the conductive brush block guide hole.

[0010] Furthermore, a conductive brush block guide rod is provided on the top of the conductive brush block to ensure the stable extension and retraction of the conductive brush block relative to the conductive brush block guide hole.

[0011] Furthermore, the insulating base plate is provided with brush block guide rod through slots and spring guide rod through slots on the front and rear sides symmetrical about the connecting rod support seat, respectively. The top end of the brush block guide rod in the first brush block assembly is hinged to the first connecting rod assembly; the top end of the brush block guide rod in the second brush block assembly is hinged to the second connecting rod assembly.

[0012] Furthermore, the first link assembly and the second link assembly have the same structure, both including a first link, a second link, and a third link that are hinged to each other, wherein: The first link is composed of a first link section and a second link section connected at an angle, and a first link first hinge section is provided at the connection point; the end of the first link section is provided with a first link second hinge section, and the end of the second link section is provided with a first link third hinge section. The second connecting rod is in the shape of a straight line, with one end hinged to the first hinge part of the first connecting rod via a pin, and the other end hinged to the connecting rod support via a pin. The third connecting rod is in the shape of a straight line, with one end hinged to the third hinge of the first connecting rod via a pin, and the other end hinged to the brush block guide rod via a pin. The second hinge portion of the first connecting rod is hinged to the first signal level conductive post or the second signal level conductive post via a pin.

[0013] Furthermore, the included angle between the first link portion and the second link portion is greater than 90° and less than 180°.

[0014] Furthermore, it also includes a ground charging brush plate, the ground charging brush plate includes a ground charging brush plate base, the surface of the ground charging brush plate base is provided with a signal level conductive post groove for the first signal level conductive post and the second signal level conductive post to slide, and the first signal brush plate body and the second signal brush plate body are disposed in the signal level conductive post groove; The surface of the ground charging brush plate base is symmetrically fitted with a first brush plate body and a second brush plate body along the axis of the signal level conductive column groove; the surfaces of the first signal brush plate body, the second signal brush plate body, the first brush plate body and the second brush plate body, and the ground charging brush plate base are horizontal. When the first signal-level conductive post contacts the first signal brush plate body, it outputs a first positioning signal; when the second signal-level conductive post contacts the second signal brush plate body, it outputs a second positioning signal.

[0015] Furthermore, the first and second signal-level conductive pillars are made of highly conductive copper and have been nickel-plated on their surfaces.

[0016] Furthermore, the insulating base plate is made of high-strength polyoxymethylene resin; the conductive brush block is made of highly conductive copper and its surface is nickel-plated.

[0017] This invention provides a telescopic ground charging brush block device for heavy-duty omnidirectional AGV robots. When not charging, the conductive brush block retracts and does not protrude from the AGV chassis, avoiding collisions with road debris and obstacles to expand adaptability to complex working conditions. It uses two sets of signal-level conductive posts for dual triggering to determine the charging position, avoiding misjudgment from a single signal and improving charging reliability. The brush block extension / retraction and charging start / stop can be completed without manual intervention. The structure is stable and durable, comprehensively improving the charging adaptability and safety of the AGV. Specific advantages are as follows: 1. Avoid brush block damage: When not charging, the conductive brush block retracts into the guide hole through the brush block reset spring, without protruding from the AGV chassis. This can effectively avoid collision damage caused by foreign objects, obstacles or slopes on the road, and expand the application range of AGV in complex working conditions.

[0018] 2. Accurate determination of charging position: The system outputs a position signal through two sets of signal-level conductive pillars. The AGV is determined to have reached the designated charging position only when both sets of signals are triggered simultaneously. This solves the problem of easy misjudgment in the existing single signal detection and greatly improves the charging reliability.

[0019] 3. Unmanned charging: Through the linkage of mechanical structure and signal detection, the extension and retraction of the brush block, the determination of the charging position and the start and stop of charging can be completed without human intervention, realizing a fully unmanned closed-loop operation.

[0020] 4. Stable and reliable structure: The reverse transmission design of the linkage assembly ensures reliable contact between the brush block and the ground brush plate, the spring return structure ensures automatic retraction when not charging, and the material selection (high insulation, high conductivity, wear resistance) further enhances the durability and safety of the device. Attached Figure Description

[0021] Figure 1 This is a first-view structural schematic diagram of a telescopic ground charging brush block device for a heavy-duty omnidirectional AGV robot according to the present invention. Figure 2 This is a second-view structural schematic diagram of a telescopic ground charging brush block device for a heavy-duty omnidirectional AGV robot according to the present invention. Figure 3 This is a top view of a telescopic ground charging brush block device for a heavy-duty omnidirectional AGV robot according to the present invention. Figure 4 This is a first-view assembly diagram of the brush block assembly in a telescopic ground charging brush block device for a heavy-duty omnidirectional AGV robot according to the present invention. Figure 5 This is a second-view assembly diagram of the brush block assembly in a telescopic ground charging brush block device for a heavy-duty omnidirectional AGV robot according to the present invention. Figure 6This is a third-view assembly diagram of the brush block assembly in a telescopic ground charging brush block device for a heavy-duty omnidirectional AGV robot according to the present invention. Figure 7 This is a schematic diagram of the first assembly of the linkage assembly in the telescopic ground charging brush block device for heavy-duty omnidirectional AGV robots according to the present invention. Figure 8 This is a schematic diagram of the ground charging brush plate in a telescopic ground charging brush block device for heavy-duty omnidirectional AGV robots according to the present invention. Figure 9 This is a first-view schematic diagram of the interaction between the telescopic ground charging brush block device for heavy-duty omnidirectional AGV robots described in this invention and the ground charging brush plate. Figure 10 This is a side view of the interaction between the telescopic ground charging brush block device for heavy-duty omnidirectional AGV robots described in this invention and the ground charging brush plate.

[0022] Illustration markings: 1-Insulating base plate, 101-Through hole of first signal level conductive post, 102-Through hole of second signal level conductive post, 103-Through groove of brush block guide rod, 104-Through groove of spring guide rod; 2-Linkage support seat; 3-First Linkage Assembly; 4-Second link assembly; 5 - First signal stage conductive pillar; 6-First brush block component; 7 - Second signal stage conductive pillar; 8-Second brush block component; 9-Ground charging brush plate, 901-First signal brush plate body, 902-Second signal brush plate body, 903-First brush plate body, 904-Second brush plate body, 905-Ground charging brush plate base, 906-Base signal level conductive column groove; 10 - Signal level guide block, 1001 - First signal level guide block through hole, 1002 - Second signal level guide block through hole; 11-Conductive brush block; 12-Spring guide rod; 13-Brush block guide rod, 1301-Second spring seat, 1302-Second spring slot; 14-Conductive brush block guide block, 1401-Conductive brush block guide hole, 1402-First spring seat, 1403-First spring groove; 15-Brush block reset spring; 16-First connecting rod, 1601-First connecting rod section, 1602-Second connecting rod section, 1603-First connecting rod first hinge section, 1604-First connecting rod second hinge section, 1605-First connecting rod third hinge section; 17 - Second Link; 18 - Third Link; 19-Pin; 20 - Conductive brush block guide rod; 21-Screw. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. The described embodiments are merely some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] like Figures 1-3 As shown, this solution provides a telescopic ground charging brush block device for heavy-duty omnidirectional AGV robots. The structure and function of each component are as follows: like Figure 5 and Figure 6 As shown, the insulating base plate 1 of this device is made of high-strength polyoxymethylene resin, which has high insulation properties and provides the installation foundation for the entire device. A connecting rod support 2 is provided on its surface for connecting the first connecting rod assembly 3 and the second connecting rod assembly 4; first signal level conductive post through holes 101 and second signal level conductive post through holes 102 are provided on the left and right sides for the first signal level conductive post 5 and the second signal level conductive post 7 to pass through; brush block guide rod through slots 103 and spring guide rod through slots 104 are provided on the front and rear sides for the brush block guide rod 13 and the spring guide rod 12 to pass through.

[0025] like Figure 5 As shown, the connecting rod support 2 of this device is mounted on the surface of the insulating base plate 1, providing a hinge support point for the first connecting rod assembly 3 and the second connecting rod assembly 4, ensuring stable transmission of the connecting rod assembly.

[0026] like Figure 7As shown, the first link assembly 3 and the second link assembly 4 of this device have the same structure, both consisting of a first link 16, a second link 17, and a third link 18 that are hinged to each other. The first link 16 is composed of a first link portion 1601 and a second link portion 1602 connected at an angle (greater than 90° and less than 180°). It is hinged to the first signal level conductive post 5 or the second signal level conductive post 7 through the second hinge portion 1604 of the first link, to the second link 17 through the first hinge portion 1603 of the first link, and to the third link 18 through the third hinge portion 1605 of the first link. One end of the second link 17 is hinged to the first link 16, and the other end is hinged to the link support seat 2. One end of the third link 18 is hinged to the first link 16, and the other end is hinged to the brush block guide rod 13. Through the hinged transmission of the linkage assembly, the first signal level conductive post 5 and the first brush block assembly 6, and the second signal level conductive post 7 and the second brush block assembly 8 are raised and lowered in opposite directions. That is, when the signal level conductive post rises, the brush block assembly falls, and when the signal level conductive post falls, the brush block assembly rises.

[0027] like Figures 4-6 As shown, the first signal-level conductive post 5 and the second signal-level conductive post 7 of this device are made of highly conductive copper with a nickel-plated surface, possessing excellent conductivity, wear resistance, and rigidity. They can extend and retract relative to the insulating base plate 1 and the signal-level guide block 10, serving not only as force transmission components to drive the brush block assembly to rise and fall, but also as signal detection components. When in contact with the signal brush plate body of the ground charging brush plate 9, they output a first positioning signal and a second positioning signal respectively, achieving accurate determination of the charging position through the simultaneous triggering of the two sets of signals.

[0028] like Figures 4-6 As shown, the first brush block assembly 6 and the second brush block assembly 8 of this device are symmetrically arranged on the front and rear sides of the connecting rod support 2, and have the same specifications. Each includes a conductive brush block 11, a spring guide rod 12, a brush block guide rod 13, a conductive brush block guide block 14, and a brush block return spring 15. The conductive brush block 11 is made of highly conductive copper with a nickel-plated surface. A conductive brush block guide rod 20 is provided at the top to ensure stable extension and contraction relative to the conductive brush block guide hole 1401. The spring guide rod 12 is inverted L-shaped, and a second spring seat 1301 is provided on the brush block guide rod 13. The conductive brush block guide block 14 has a conductive brush block guide hole 1401 and a first spring seat 1402 with a first spring groove 1403. The brush block reset spring 15 is embedded between the first spring groove 1403 and the second spring groove 1302. In the initial state, it causes the conductive brush block 11 to retract into the conductive brush block guide hole 1401 to avoid damage when not charging. When subjected to force, it drives the conductive brush block 11 to extend out and contact the ground brush plate when charging.

[0029] like Figures 4-6As shown, the signal level guide block 10 of this device is disposed on the bottom side of the insulating base plate 1, and has a first signal level guide block through hole 1001 and a second signal level guide block through hole 1002 corresponding to the first signal level conductive post through hole 101 and the second signal level conductive post through hole 102. It plays a guiding role in the extension and retraction of the first signal level conductive post 5 and the second signal level conductive post 7, ensuring that they move smoothly and make precise contact with the signal brush plate body of the ground charging brush plate 9.

[0030] like Figure 8 As shown, the ground charging brush plate 9 of this device serves as a mating component, including a ground charging brush plate base 905. Its surface has a signal-level conductive post groove 906 for sliding the first signal-level conductive post 5 and the second signal-level conductive post 7. A first signal brush plate body 901 and a second signal brush plate body 902 are disposed within the groove (contacting the first and second signal-level conductive posts respectively to trigger a positioning signal). The first brush plate body 903 and the second brush plate body 904 are symmetrically embedded on the surface of the ground charging brush plate base 905 along the signal-level conductive post groove 906, respectively contacting the first and second brush block assemblies to achieve charging. Each brush plate body is horizontal to the surface of the ground charging brush plate base 905, ensuring stable mating with this device.

[0031] like Figure 9 and Figure 10 As shown, the working principle and process of this device are as follows: Non-charging while driving: At this time, the conductive brush blocks 11 of the first brush block assembly 6 and the second brush block assembly 8 are retracted into the conductive brush block guide hole 1401 under the initial elastic force of the brush block reset spring 15, and do not protrude from the AGV chassis, so as to avoid contact with foreign objects or obstacles on the road during driving; the first signal level conductive post 5 and the second signal level conductive post 7 are in the extended state under their own gravity and the transmission of the linkage assembly, and do not contact the ground charging brush plate, and do not output the position signal.

[0032] Approaching the charging position and triggering the signal: When the AGV travels to the ground charging brush plate 9, the first signal-level conductive post 5 first enters the signal-level conductive post groove 906 and contacts the first signal brush plate body 901. It rises under the upward force of the ground. Through the transmission of the first connecting rod assembly 3, the first connecting rod 16 rotates around the hinge point, driving the third connecting rod 18 to push the brush block guide rod 13 downward. At the same time, the conductive brush block 11 of the first brush block assembly 6 overcomes the elastic force of the brush block reset spring 15 and descends, extending out of the conductive brush block guide hole 1401 and contacting the first brush plate body 903. At the same time, the first signal-level conductive post 5 is connected to the first signal brush plate body 901, and the first arrival signal is output.

[0033] As the AGV continues to move to the precise charging position, the second signal-level conductive post 7 enters the signal-level conductive post groove 906 and contacts the second signal brush plate body 902. It rises under the upward force of the ground and, through the transmission of the second linkage assembly 4, drives the conductive brush block 11 of the second brush block assembly 8 to descend and contact the second brush plate body 904. At the same time, the second signal-level conductive post 7 and the second signal brush plate body 902 are connected, and the second arrival signal is output.

[0034] Charging Start: When the control system receives the first arrival signal and the second arrival signal at the same time, it determines that the AGV has accurately reached the designated charging position, triggers the charging command, and the current is used to charge the AGV through the contact between the conductive brush block 11 and the ground brush plate body.

[0035] Charging completion and reset: After charging is completed, the AGV exits the charging area. The first signal level conductive post 5 first detaches from the first signal brush plate body 901. The force disappears. Under the elastic force of the brush block reset spring 15, the conductive brush block 11 of the first brush block assembly 6 rises and retracts into the conductive brush block guide hole 1401. At the same time, the first signal level conductive post 5 is driven to descend through the first connecting rod assembly 3, and the first position signal stops being output. As the AGV continues to exit, the second signal level conductive column 7 detaches from the second signal brush plate body 902, the force disappears, and the conductive brush block 11 of the second brush block assembly 8 rises and retracts under the action of the brush block reset spring 15. Through the second linkage assembly 4, it drives the second signal level conductive column 7 to descend, and the second position signal stops being output. Finally, the device fully resets to driving mode and awaits the next charging command.

[0036] The above description is merely illustrative of the embodiments of the present invention and is not intended to limit the present invention. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A telescopic ground charging brush block device for heavy-duty omnidirectional AGV robots, characterized in that, The device includes an insulating base plate (1), on the surface of which a connecting rod support seat (2) is provided. The left and right sides of the connecting rod support seat (2) are movably connected to a first connecting rod assembly (3) and a second connecting rod assembly (4). The first connecting rod assembly (3) is provided with a first signal level conductive post (5) and a first brush block assembly (6) that can move up and down in opposite directions. The second connecting rod assembly (4) is provided with a second signal level conductive post (7) and a second brush block assembly (8) that can move up and down in opposite directions. When the bottom of the first signal level conductive post (5) is subjected to external force, it rises and is simultaneously driven by the first link assembly (3) to lower the first brush block assembly (6) to achieve charging contact; after the force on the bottom of the first signal level conductive post (5) disappears, the first brush block assembly (6) automatically rises and is simultaneously driven by the first link assembly (3) to lower the first signal level conductive post (5) to achieve charging separation. When the bottom of the second signal level conductive post (7) is subjected to external force, it rises and is simultaneously driven by the second link assembly (4) to lower the second brush block assembly (8) to achieve charging contact; after the force on the bottom of the second signal level conductive post (7) disappears, the second brush block assembly (8) automatically rises and is simultaneously driven by the second link assembly (4) to lower the second signal level conductive post (7) to achieve charging separation.

2. The telescopic ground charging brush block device for heavy-duty omnidirectional AGV robots according to claim 1, characterized in that, On the insulating base plate (1), on the left and right sides symmetrical about the connecting rod support seat (2), there are first signal level conductive post through holes (101) and second signal level conductive post through holes (102) that allow the first signal level conductive post (5) and the second signal level conductive post (7) to pass through. On the bottom side of the insulating base plate (1), there is a signal level guide block (10), and the signal level guide block (10) has first signal level guide block through holes (1001) and second signal level guide block through holes (1002) corresponding to the first signal level conductive post through holes (101) and the second signal level conductive post through holes (102). The first signal-level conductive post (5) can extend and retract relative to the first signal-level conductive post through hole (101) and the first signal-level guide block through hole (1001), and the second signal-level conductive post (7) can extend and retract relative to the second signal-level conductive post through hole (102) and the second signal-level guide block through hole (1002).

3. A telescopic ground charging brush block device for a heavy-duty omnidirectional AGV robot according to claim 1, characterized in that, The first brush block assembly (6) and the second brush block assembly (8) are symmetrically arranged on the front and rear sides of the connecting rod support (2), and have the same specifications, both including: Conductive brush block (11), the conductive brush block (11) is disposed on the lower side of the insulating base plate (1), and inverted L-shaped spring guide rods (12) are symmetrically disposed at both ends of its top, and a brush block guide rod (13) connected to the top of the conductive brush block (11) is disposed between the two spring guide rods (12). A conductive brush block guide block (14) is provided on the conductive brush block guide block (14) to allow the conductive brush block (11) to be fitted, and a first spring seat (1402) with a first spring groove (1403) is symmetrically provided on the side wall of the conductive brush block guide hole (1401). The brush block guide rod (13) is provided with a second spring seat (1301) with a second spring groove (1302); The first spring slot (1403) and the second spring slot (1302) can be used to embed the two ends of the vertically arranged brush block reset spring (15).

4. A telescopic ground charging block device for a heavy-duty omnidirectional AGV robot according to claim 3, characterized in that, The top of the conductive brush block (11) is also provided with a conductive brush block guide rod (20) to ensure the stable extension and retraction of the conductive brush block (11) relative to the conductive brush block guide hole (1401).

5. A telescopic ground charging brush block device for a heavy-duty omnidirectional AGV robot according to claim 3, characterized in that, The insulating base plate (1) is provided with a brush block guide rod through slot (103) that allows the brush block guide rod (13) to pass through, and a spring guide rod through slot (104) that allows the spring guide rod (12) to pass through, respectively, on the front and rear sides symmetrical about the connecting rod support seat (2). The top end of the brush block guide rod (13) in the first brush block assembly (6) is hinged to the first connecting rod assembly (3); the top end of the brush block guide rod (13) in the second brush block assembly (8) is hinged to the second connecting rod assembly (4).

6. A telescopic ground charging brush block device for a heavy-duty omnidirectional AGV robot according to claim 1, characterized in that, The first link assembly (3) and the second link assembly (4) have the same structure, both including a first link (16), a second link (17), and a third link (18) that are hinged to each other, wherein: The first link (16) is composed of a first link part (1601) and a second link part (1602) connected at an angle, and a first link first hinge part (1603) is provided at the connection; a first link second hinge part (1604) is provided at the end of the first link part (1601), and a first link third hinge part (1605) is provided at the end of the second link part (1602). The second connecting rod (17) is in the shape of a straight line. One end of it is hinged to the first hinge part (1603) of the first connecting rod through a pin (19), and the other end is hinged to the connecting rod support seat (2) through a pin (19). The third link (18) is in the shape of a straight line. One end of it is hinged to the third hinge part (1605) of the first link through a pin (19), and the other end is hinged to the brush block guide rod (13) through a pin (19). The second hinge portion (1604) of the first connecting rod is hinged to the first signal level conductive post (5) or the second signal level conductive post (7) via a pin (19).

7. A telescopic ground charging block device for a heavy-duty omnidirectional AGV robot according to claim 6, characterized in that, The included angle between the first link portion (1601) and the second link portion (1602) is greater than 90° and less than 180°.

8. A telescopic ground charging block device for a heavy-duty omnidirectional AGV robot according to claim 1, characterized in that, It also includes a ground charging brush plate (9), which includes a ground charging brush plate base (905). The surface of the ground charging brush plate base (905) is provided with a signal level conductive post groove (906) for the first signal level conductive post (5) and the second signal level conductive post (7) to slide. A first signal brush plate body (901) and a second signal brush plate body (902) are provided in the signal level conductive post groove (906). The surface of the ground charging brush plate base (905) is symmetrically fitted with the first brush plate body (903) and the second brush plate body (904) along the signal level conductive column groove (906); the surfaces of the first signal brush plate body (901), the second signal brush plate body (902), the first brush plate body (903), the second brush plate body (904), and the ground charging brush plate base (905) are horizontal.

9. A telescopic ground charging brush block device for a heavy-duty omnidirectional AGV robot according to claim 1, characterized in that, The first signal level conductive post (5) and the second signal level conductive post (7) are made of high-conductivity copper and are nickel-plated on the surface.

10. A telescopic ground charging brush block device for a heavy-duty omnidirectional AGV robot according to claim 1, characterized in that, The insulating base plate (1) is made of high-strength polyoxymethylene resin; the conductive brush block (11) is made of high-conductivity copper and its surface is plated with nickel.

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