Connecting device for charging of mobile robot

Abstract

The utility model relates to the technical field of connecting devices, in particular to a connecting device for charging a mobile robot, which comprises a floating support assembly, outer support assemblies are fixedly connected to the top end and the bottom end of the floating support assembly, and a correcting support assembly is mounted at the position, close to the front end, of the floating support assembly. An exhaust assembly and a charging assembly are fixedly connected to the front end of the correction support assembly, a first telescopic limiting assembly and a second telescopic limiting assembly are installed on the inner side of the charging assembly, the charging assembly comprises a reinforcing plate, a cylindrical shell is fixedly connected to the inner side of the reinforcing plate, an air storage groove is formed in the inner side of the cylindrical shell, and a second compression spring is fixedly connected to the inner side of the air storage groove. According to the utility model, the connecting device adopts a multi-stage elastic correction and floating alignment structure, so that the alignment precision of the robot charging interface and the charging pile is improved, the position deviation is offset, the butt joint failure rate is reduced, the interface abrasion deformation is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of connection device technology, specifically a connection device for charging a mobile robot. Background Technology

[0002] The connection device for mobile robot charging is the core component for realizing the power transmission between the robot and the charging equipment. It usually consists of a charging interface on the robot end and an adapter component on the charging pile or charging base end. The charging interface on the robot end includes metal contacts, a charging plug, and a wireless induction coil, while the adapter component on the charging pile or charging base end includes flexible contacts, a charging slot, and a wireless transmitting coil. This device can accurately complete the physical connection with the robot autonomously or with human assistance, realizing safe and efficient power transmission. It can adapt to different charging methods and voltage and current specifications. Different charging methods include contact and non-contact charging. At the same time, it can ensure the stability and safety of the mobile robot charging process and meet its continuous operation endurance requirements.

[0003] Mobile robots are intelligent equipment with autonomous or semi-autonomous mobility. Common modes of movement include wheeled, tracked, legged, and unmanned aerial vehicles. They typically integrate sensors, controllers, actuators, and navigation and positioning systems. They can autonomously plan paths and avoid obstacles in structured or unstructured environments such as factory workshops, warehouses, homes, and outdoors to complete tasks such as material handling, cargo sorting, environmental inspection, service interaction, and hazardous operations. They are widely used in industries such as industry, logistics, service, medical care, and security. They can replace manual labor to complete repetitive, heavy, or high-risk work, improving work efficiency and safety.

[0004] During the autonomous docking and charging process of mobile robots, errors inevitably exist in the motion control and execution stages. These errors can cause positional deviations between the robot's charging interface and the charging pile adapter, which not only increases the probability of docking failure but may also cause hard friction between the interface and the adapter due to structural misalignment, leading to wear and deformation, shortening the service life of the entire connection device, and affecting the stability of the charging process. Therefore, a connection device for charging mobile robots is proposed to address the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a connection device for charging mobile robots to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A mobile robot charging connection device includes a floating support assembly. An outer support assembly is fixedly connected to both the top and bottom of the floating support assembly. A calibration support assembly is installed near the front end of the floating support assembly. An exhaust assembly and a charging assembly are fixedly connected to the front end of the calibration support assembly. A first telescopic limiting assembly and a second telescopic limiting assembly are installed inside the charging assembly. The charging assembly includes a reinforcing plate. A cylindrical shell is fixedly connected to the inner side of the reinforcing plate. An air storage groove is formed inside the cylindrical shell. A second compression spring is fixedly connected to the inner side of the air storage groove. An internal column is fixedly connected to the front end of the second compression spring. A rubber sealing ring is fixedly connected to the outer side of the internal column. A duckbill valve is fixedly connected to the rear end of the cylindrical shell. A base plate and a conical cover are sequentially fixedly connected to the front end of the internal column. A mating groove is formed near the rear end of the conical cover.

[0008] As a further optimization of this utility model, the floating support assembly includes a floating frame. A first mounting column is fixedly connected to both the left and right ends of the floating frame. A first tension spring is inserted into the inner side of each of the first mounting columns at both ends. A first rail plate and a second mounting column are fixedly connected to both sides of the floating frame. A guide hole is provided on the inner side of the first rail plate. A second tension spring is inserted into the inner side of the second mounting column. A first guide column is inserted into the inner side of the guide hole. The top and bottom ends of the first guide column are fixedly connected to the positioning frame by bolts. A third mounting column is inserted into the end of the second tension spring away from the second mounting column. A movable gap is left between the top and bottom ends of the floating frame and the positioning frame.

[0009] As a further optimization of this utility model, the positioning frame is fixedly connected to a positioning seat at its front end, the inner side of the positioning frame is fixedly engaged with the third mounting column, and the inner side of the positioning seat is provided with a mounting hole.

[0010] As a further optimization of this utility model, the correction bracket assembly includes a base plate, two second rail plates are fixedly connected to the front end of the base plate, a second guide post is slidably fitted on the inner side of the second rail plate, a fourth mounting post is fixedly connected to the inner side of the base plate, a sleeve is fixedly connected to the inner side of the base plate by bolts, an extension post is slidably connected to the inner side of the sleeve, a first compression spring is sleeved on the outer side of the extension post, the front end of the extension post is fixedly connected to a reinforcing plate by bolts, and the left and right ends of the second guide post are both fixedly connected to a floating frame by bolts.

[0011] As a further optimization of this utility model, the exhaust assembly includes a cylindrical shell with a vent passage extending through its inner side, an exhaust port near the rear end of the cylindrical shell, a fixed connection between the rear end of the cylindrical shell and the front end of the second rail plate, and the center of the cylindrical shell aligned with the center of the gas storage tank.

[0012] As a further optimization of this utility model, the following features are provided: a wire-passing groove is provided on the inner side of the reinforcing plate; the front end of the reinforcing plate is fixedly connected to the inner cylinder by bolts; a receiving plate is fixedly connected to the front end of the inner cylinder; the front end of the receiving plate is fixedly connected to the base plate by bolts; the front end of the base plate is fixedly connected to the charging socket by bolts; a wire-passing hole is provided on the inner side of the base plate for the charging socket; a square groove is provided on the inner side of the receiving plate; an insertion hole is provided on the inner side of the base plate; the insertion holes of the receiving plate and the base plate are both inserted into the cylindrical shell; the front end of the charging socket is aligned with the mating groove; a charging plug can be inserted into the inner side of the charging socket; and the charging plug is fixed to the push plate by bolts.

[0013] As a further optimization of this utility model, the built-in column is slidably connected to the inner side of the gas storage tank, the outer side of the rubber sealing ring is in contact with the inner side of the gas storage tank, and the structure of the cylindrical shell up to the rubber sealing ring is the same as the structure of the second telescopic limiting component.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] In this invention, the connecting device, through the floating support assembly, the correction support assembly, the charging assembly, and the first telescopic limiting assembly, significantly improves the alignment accuracy between the mobile robot's charging interface and the charging pile through a multi-level elastic correction and floating alignment structure. This effectively offsets the positional deviation caused by motion control errors, reduces the docking failure rate, reduces interface wear and deformation, and significantly extends the service life. It also has an automatic reset function to prepare for the next charging, comprehensively improving the stability, safety, and durability of the charging system. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is an exploded structural diagram of the entire utility model;

[0018] Figure 3 This is a schematic diagram of the floating support assembly structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the floating frame structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the correction bracket assembly of this utility model;

[0021] Figure 6 This utility model Figure 5 A schematic diagram of the structure at point A;

[0022] Figure 7 This is a schematic diagram of the extended column structure of this utility model;

[0023] Figure 8 This is a schematic diagram of the charging component structure of this utility model;

[0024] Figure 9 This is a cross-sectional structural diagram of the second telescopic limiting component of this utility model;

[0025] Figure 10 This is a cross-sectional structural diagram of the first telescopic limiting component of this utility model.

[0026] In the figure: 1. Floating support assembly; 11. Floating frame; 12. First mounting post; 13. First tension spring; 14. First rail plate; 15. Guide hole; 16. Second mounting post; 17. Second tension spring; 18. First guide post;

[0027] 2. External support assembly; 21. Positioning frame; 22. Positioning seat; 23. Third mounting column;

[0028] 3. Correction bracket assembly; 31. Base plate; 32. Second rail plate; 33. Second guide post; 34. Fourth mounting post; 35. Sleeve; 36. Extension post; 37. First compression spring;

[0029] 4. Exhaust assembly; 41. Shell; 42. Vent duct; 43. Exhaust port;

[0030] 5. Charging assembly; 51. Reinforcing plate; 52. Wiring groove; 53. Inner cylinder; 54. Support plate; 55. Seat plate; 56. Conical cover; 57. Mating groove; 58. Charging socket;

[0031] 6. First telescopic limiting assembly; 61. Cylindrical shell; 62. Air storage tank; 63. Second compression spring; 64. Internal column; 65. Rubber sealing ring; 66. Duckbill valve;

[0032] 7. Second telescopic limit component; 8. Charging plug; 9. Push plate. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0035] Please see Figures 1-10 This utility model provides a technical solution:

[0036] A mobile robot charging connection device includes a floating support assembly 1. An outer support assembly 2 is fixedly connected to both the top and bottom of the floating support assembly 1. A calibration support assembly 3 is installed near the front end of the floating support assembly 1. An exhaust assembly 4 and a charging assembly 5 are fixedly connected to the front end of the calibration support assembly 3. A first telescopic limiting assembly 6 and a second telescopic limiting assembly 7 are installed inside the charging assembly 5. The charging assembly 5 includes a reinforcing plate 51. A cylindrical shell 61 is fixedly connected to the inner side of the reinforcing plate 51. An air storage groove 62 is formed inside the cylindrical shell 61. A second compression spring 63 is fixedly connected to the inner side of the air storage groove 62. An internal column 64 is fixedly connected to the front end of the second compression spring 63. A rubber sealing ring 65 is fixedly connected to the outer side of the internal column 64. A duckbill valve 66 is fixedly connected to the rear end of the cylindrical shell 61. A seat plate 55 and a conical cover 56 are sequentially fixedly connected to the front end of the internal column 64. A mating groove 57 is formed near the rear end of the conical cover 56.

[0037] As a further implementation of this solution, the floating support assembly 1 includes a floating frame 11. First mounting posts 12 are fixedly connected to both the left and right ends of the floating frame 11. First tension springs 13 are inserted into the inner sides of the first mounting posts 12 at both the left and right ends. First rail plates 14 and second mounting posts 16 are fixedly connected to both the left and right sides of the floating frame 11. Guide holes 15 are provided on the inner side of the first rail plate 14. Second tension springs 17 are inserted into the inner side of the second mounting posts 16. First guide posts 18 are inserted into the inner side of the guide holes 15. The top and bottom ends of the first guide posts 18 are fixedly connected to the positioning frame 21 by bolts. The end of the second tension spring 17 furthest from the second mounting post 16 is connected to the third mounting post 23. The top and bottom ends of the floating frame 11 are both provided with movable gaps with the positioning frame 21. Through the above arrangement, the cooperation between the first mounting post 12 and the first tension spring 13, the insertion structure between the second mounting post 16 and the second tension spring 17, and the movable gap between the floating frame 11 and the positioning frame 21 provide an elastic basis for vertical position correction, effectively offsetting vertical misalignment errors and reducing hard friction. At the same time, in conjunction with the elastic reset characteristics of the second tension spring 17, it ensures accurate reset after docking and extends the service life of the components.

[0038] As a further implementation of this solution, a positioning seat 22 is fixedly connected to the front end of the positioning frame 21. The inner side of the positioning frame 21 is fixedly engaged with the third mounting column 23. The inner side of the positioning seat 22 is provided with a mounting hole. Through the above settings, the fixed engagement between the positioning frame 21 and the third mounting column 23 ensures the stable assembly of the elastic structure. The mounting hole of the positioning seat 22 provides convenience for fixing to the external housing. The outer bracket assembly 2 as a whole plays the role of supporting and fixing the structure.

[0039] As a further implementation of this solution, the calibration bracket assembly 3 includes a base plate 31. Two second rail plates 32 are fixedly connected to the front end of the base plate 31. Second guide posts 33 are slidably fitted inside the second rail plates 32. A fourth mounting post 34 is fixedly connected to the inner side of the base plate 31. A sleeve 35 is fixedly connected to the inner side of the base plate 31 by bolts. An extension post 36 is slidably connected to the inner side of the sleeve 35. A first compression spring 37 is sleeved on the outer side of the extension post 36. The front end of the extension post 36 is fixedly connected to the reinforcing plate 51 by bolts. The left and right ends of the second guide posts 33 are fixedly connected to the floating frame 11 by bolts. Through the above settings, the sliding fit between the second rail plates 32 and the second guide posts 33 realizes the left and right position adjustment, offsetting the left and right deviation error. The sliding connection between the sleeve 35 and the extension post 36 and the elastic effect of the first compression spring 37 reserve buffer space for front and rear direction correction, improve the docking fault tolerance rate, and at the same time ensure the stability of the docking process and reduce interface impact damage.

[0040] As a further implementation of this solution, the exhaust assembly 4 includes a cylindrical shell 41, with a vent 42 extending through the inner side of the cylindrical shell 41 and an exhaust port 43 located near the rear end of the cylindrical shell 41. The rear end of the cylindrical shell 41 is fixedly connected to the front end of the second rail plate 32. The center of the cylindrical shell 41 is aligned with the center of the air storage tank 62. Through the above arrangement, the alignment design between the center of the cylindrical shell 41 and the center of the air storage tank 62 ensures accurate docking guidance. The vent 42 and the exhaust port 43 enable communication between the inside of the air storage tank 62 and the outside air. With the action of the cylindrical shell 41 opening the duckbill valve 66, the outside air can communicate with the air storage tank 62, allowing the built-in column 64 to move freely.

[0041] As a further implementation of this solution, a wire-passing groove 52 is provided on the inner side of the reinforcing plate 51. The front end of the reinforcing plate 51 is fixedly connected to the inner cylinder 53 by bolts. A receiving plate 54 is fixedly connected to the front end of the inner cylinder 53. The front end of the receiving plate 54 is fixedly connected to the base plate 55 by bolts. The front end of the base plate 55 is fixedly connected to the charging socket 58 by bolts. A wire-passing hole is provided on the inner side of the base plate 55 for the charging socket 58. A square groove is provided on the inner side of the receiving plate 54. An insertion hole is provided on the inner side of the base plate 55. The insertion holes of the receiving plate 54 and the base plate 55 are both inserted into the cylindrical shell 61. The front end of the charging socket 58 is aligned with the mating groove 57. The charging plug 8 can be inserted into the inside of the charging socket 58. The charging plug 8 is fixed to the push plate 9 by bolts. Through the above settings, the bolt fixing connection of multiple components ensures the structural stability. The wire hole provides a neat layout for the wiring of the charging socket 58, avoiding messy wiring that affects the connection. The plug-in fit of the receiving plate 54, the base plate 55 and the cylindrical shell 61 and the alignment design of the charging socket 58 and the mating groove 57 improve the accuracy of the insertion of the charging plug 8, reduce interface wear, and ensure the safety of power transmission.

[0042] As a further implementation of this solution, the built-in column 64 is slidably connected to the inner side of the gas storage tank 62, and the outer side of the rubber sealing ring 65 is in contact with the inner side of the gas storage tank 62. The structure of the cylindrical shell 61 up to the rubber sealing ring 65 is the same as the structure of the second telescopic limiting component 7. Through the above settings, the sliding cooperation between the built-in column 64 and the gas storage tank 62, combined with the sealing effect of the rubber sealing ring 65, prevents the gas inside the gas storage tank 62 from flowing out through the duckbill valve 66 under the limiting effect of the duckbill valve 66. At the same time, it facilitates the reset of the built-in column 64 and the entry of external gas into the gas storage tank 62 through the duckbill valve 66 under the elastic force of the second compression spring 63. The design of the second telescopic limiting component 7 can improve the stability of the movement of the conical cover 56.

[0043] Workflow: During installation, firstly, insert the two first guide posts 18 into the guide holes 15 respectively. Hook the four second tension springs 17 onto the upper and lower ends of the two second mounting posts 16 respectively. Then, align the through holes of the two positioning brackets 21 with the first guide posts 18. The two positioning brackets 21 are attached to the upper and lower ends of the floating frame 11 respectively. Fix the two positioning brackets 21 to the first guide posts 18 respectively with bolts. Hook the two second tension springs 17 together with the four third mounting posts 23 to complete the assembly of the floating bracket assembly 1 and the outer bracket assembly 2. Insert the sleeve 35 into the base plate 31. Fix the base plate 31 and the sleeve 35 with bolts. Insert the extension post 36 into the sleeve 35. The first compression spring 37 is sleeved on the outside of the extension post 36. Insert the second guide post 33 into the second rail plate 32. Fix the two second guide posts 33 to the floating frame 11 with bolts. Hook the two first tension springs 13 onto the first mounting post 12 and the fourth mounting post 34 respectively to complete the alignment of the bracket assembly 3 and the floating bracket assembly 1. The assembly is performed with the extension column 36 aligned with the pre-drilled hole in the reinforcing plate 51. The reinforcing plate 51 is pre-fixed with the first telescopic limiting assembly 6 and the second telescopic limiting assembly 7. The first telescopic limiting assembly 6 and the second telescopic limiting assembly 7 are sequentially inserted into the interior of the receiving plate 54 and the seat plate 55. The receiving plate 54 is placed between the reinforcing plate 51 and the seat plate 55. After the inner cylinder 53 is aligned with the reinforcing plate 51, the reinforcing plate 51 and the inner cylinder 53 are fixed by bolts from the rear end of the reinforcing plate 51. The extension column 36 is then fixed by bolts from the front end of the assembly. The column 36 is fixed to the reinforcing plate 51. The base plate 55 and the receiving plate 54 are fixed with bolts. The wiring of the charging socket 58 is led through the inner side of the base plate 55, the inner side of the receiving plate 54 and the wire groove 52. The charging socket 58 is fixed to the base plate 55 with bolts. The conical cover 56 is fixed to the front end of the built-in column 64 and the second telescopic limit assembly 7 with bolts. The charging plug 8 is fixed to the push plate 9. At this time, the rear end of the charging plug 8 is flush with the rear end of the push plate 9. The charging plug 8 is fixed to the mobile robot, and the installation is completed.

[0044] During position correction, the mobile robot moves the charging plug 8 and the push plate 9. The sum of the elastic coefficients of the two first compression springs 37 is three times the sum of the elastic coefficients of all the first tension springs 13 and all the second tension springs 17. This elastic coefficient design facilitates the initial adjustment of the position of the charging socket 58. After the push plate 9 contacts the conical cover 56, if the position of the push plate 9 and the conical cover 56 is at an angle, the push plate 9 will push the conical cover 56 backward. Due to the shape and structure of the conical cover 56, under the squeezing action of the push plate 9, the conical cover 56 will move until the rear end faces of the push plate 9 and the conical cover 56 are aligned, so that the charging plug 8 and the charging socket 58 are aligned front and back. Through the sealing of the rubber sealing ring 65 and the closure of the front opening of the duckbill valve 66, the air storage tank 62 is a sealed cavity at this time. At this time, the internal column 64 will drive the cylindrical shell 61 to move backward, and the cylindrical shell 61 pushes the... The reinforcing plate 51, the extension column 36, and the first compression spring 37 move backward. The two first compression springs 37 push the sleeve 35 and the base plate 31. If it deviates to the left or right, the base plate 31 will drive the second rail plate 32 to move left or right. The second rail plate 32 slides on the outside of the second guide post 33. The base plate 31 drives the first tension spring 13 to deform through the fourth mounting post 34. The design of the two first tension springs 13 plays the role of resetting the position of the base plate 31. If it deviates vertically, the base plate 31 will drive the floating frame 11 to move up and down through the second guide post 33. The floating frame 11 drives the first rail plate 14 and the second mounting post 16 to move up and down. The first guide post 18 slides inside the first rail plate 14. The second mounting post 16 pulls and deforms the two second tension springs 17. The two second tension springs 17 play the role of resetting the position of the second mounting post 16 and the floating frame 11 until the position of the base plate 31 is fixed.

[0045] When the charging plug 8 is connected to the charging socket 58, the reinforcing plate 51 compresses the first compression spring 37. The reinforcing plate 51 drives the extension column 36 to slide inside the sleeve 35. The sliding of the extension column 36 provides space and time for the adjustment of the position of the charging socket 58. When the reinforcing plate 51 drives the cylindrical shell 61 and the second telescopic limiting component 7 to move backward, since the cylindrical shell 41 is aligned with the duckbill valve 66, when the cylindrical shell 41 enters the interior of the duckbill valve 66, the cylindrical shell 41 deforms the front end of the duckbill valve 66. The interior of the air storage tank 62 is connected to the outside air through the vent 42 and the exhaust port 43. At this time, the conical cover 56 can drive the built-in column. 64 moves into the air storage tank 62, the built-in column 64 squeezes the second compression spring 63, and the second telescopic limit component 7 retracts at the same time. The second telescopic limit component 7 can improve the stability of the cone cover 56 when it moves until the charging plug 8 is inserted into the charging socket 58, and the charging is completed. Even if the mobile robot is affected by motion control and execution error, this charging method can make the charging socket 58 and the charging plug 8 aligned to complete the charging connection. It reduces the wear and deformation of the interface caused by hard friction between the charging interface and the adapter component due to the misalignment of the charging plug 8 and the charging socket 58, and significantly improves the service life of the connection device and the stability of charging.

[0046] After charging is complete, as the charging plug 8 and push plate 9 gradually move away from the conical cover 56 and charging socket 58, the first tension spring 13 can reset the base plate 31 and charging socket 58 in the left and right directions, the second tension spring 17 can reset the charging socket 58 and base plate 31 in the up and down directions, and the first compression spring 37 can reset the charging assembly 5 forward. The cylinder shell 41 moves away from the inside of the duckbill valve 66. Under the elastic force of the second compression spring 63, the built-in column 64 and conical cover 56 are pushed forward to reset. At this time, the outside air will enter the air storage tank 62 through the inside of the duckbill valve 66, thus preparing for recharging.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connection device for charging a mobile robot, comprising a floating support assembly (1), characterized in that: The floating support assembly (1) is fixedly connected to the top and bottom of the outer support assembly (2). The floating support assembly (1) is installed near the front end of the front end of the calibration support assembly (3). The front end of the calibration support assembly (3) is fixedly connected to the exhaust assembly (4) and the charging assembly (5). The charging assembly (5) is installed with the first telescopic limit assembly (6) and the second telescopic limit assembly (7) inside the charging assembly (5). The exhaust assembly (4) includes a cylindrical shell (41), a ventilation channel (42) is provided through the inner side of the cylindrical shell (41), and an exhaust port (43) is provided near the rear end of the cylindrical shell (41). The charging assembly (5) includes a reinforcing plate (51), a cylindrical shell (61) is fixedly connected to the inner side of the reinforcing plate (51), an air storage groove (62) is opened on the inner side of the cylindrical shell (61), a second compression spring (63) is fixedly connected to the inner side of the air storage groove (62), an internal column (64) is fixedly connected to the front end of the second compression spring (63), a rubber sealing ring (65) is fixedly connected to the outer side of the internal column (64), a duckbill valve (66) is fixedly connected to the cylindrical shell (61) near the rear end, a seat plate (55) and a conical cover (56) are fixedly connected to the front end of the internal column (64) in sequence, and a mating groove (57) is opened on the conical cover (56) near the rear end.

2. The connection device for charging a mobile robot according to claim 1, characterized in that: The floating support assembly (1) includes a floating frame (11). The left and right ends of the floating frame (11) are fixedly connected to a first mounting post (12). The inner side of the first mounting post (12) at the left and right ends is inserted with a first tension spring (13). The left and right sides of the floating frame (11) are fixedly connected to a first rail plate (14) and a second mounting post (16). The inner side of the first rail plate (14) is provided with a guide hole (15). The inner side of the second mounting post (16) is inserted with a second tension spring (17). The inner side of the guide hole (15) is inserted with a first guide post (18). The top and bottom ends of the first guide post (18) are fixedly connected to the positioning frame (21) by bolts. The end of the second tension spring (17) away from the second mounting post (16) is inserted with a third mounting post (23). The top and bottom ends of the floating frame (11) and the positioning frame (21) are provided with movable gaps.

3. The connection device for charging a mobile robot according to claim 2, characterized in that: The positioning frame (21) is fixedly connected to the front end of the positioning seat (22), and the inner side of the positioning frame (21) is fixedly engaged with the third mounting column (23). The inner side of the positioning seat (22) is provided with mounting holes.

4. The connection device for charging a mobile robot according to claim 2, characterized in that: The correction bracket assembly (3) includes a base plate (31), two second rail plates (32) are fixedly connected to the front end of the base plate (31), a second guide post (33) is slidably fitted inside the second rail plate (32), a fourth mounting post (34) is fixedly connected inside the base plate (31), a sleeve (35) is fixedly connected inside the base plate (31) by bolts, an extension post (36) is slidably connected inside the sleeve (35), a first compression spring (37) is sleeved on the outside of the extension post (36), the front end of the extension post (36) is fixedly connected to the reinforcing plate (51) by bolts, and the left and right ends of the second guide post (33) are fixedly connected to the floating frame (11) by bolts.

5. The connection device for charging a mobile robot according to claim 4, characterized in that: The rear end of the cylindrical shell (41) is fixedly connected to the front end of the second rail plate (32), and the center of the cylindrical shell (41) is aligned with the center of the gas storage tank (62).

6. The connection device for charging a mobile robot according to claim 1, characterized in that: The reinforcing plate (51) has a wire groove (52) on its inner side. The front end of the reinforcing plate (51) is fixedly connected to the inner cylinder (53) by bolts. The front end of the inner cylinder (53) is fixedly connected to a receiving plate (54). The front end of the receiving plate (54) is fixedly connected to the seat plate (55) by bolts. The front end of the seat plate (55) is fixedly connected to the charging socket (58) by bolts. The charging socket (58) has a wire hole on its inner side. The receiving plate (54) has a square groove on its inner side. The seat plate (55) has an insertion hole on its inner side. The insertion holes of the receiving plate (54) and the seat plate (55) are inserted into the cylindrical shell (61). The front end of the charging socket (58) is aligned with the mating groove (57). A charging plug (8) can be inserted into the inner side of the charging socket (58). The charging plug (8) is fixed to the push plate (9) by bolts.

7. The connection device for charging a mobile robot according to claim 1, characterized in that: The built-in column (64) is slidably connected to the inner side of the gas storage tank (62), the outer side of the rubber sealing ring (65) is in contact with the inner side of the gas storage tank (62), and the structure of the cylindrical shell (61) up to the rubber sealing ring (65) is the same as the structure of the second telescopic limiting component (7).

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