A cleaning trolley with self-adapting cleaning mechanism and capable of rotating in situ

Abstract

The application discloses a cleaning trolley with an adaptive cleaning mechanism and capable of rotating in place, comprising a center base, a rotating-in-place four-wheel drive mechanism, a swing arm group, a pushing and lifting mechanism and an adaptive magnetic cleaning disc group, two groups of wheels rotate at the same speed in opposite directions to realize 360-degree rotation of the trolley body in place and flexible adaptation to narrow spaces; the pushing and lifting mechanism comprises a pushing and lifting driving group and an elastic pushing and lifting group, and forms a triangular structure with the swing arm and the cleaning disc group, the position of the cleaning disc is adjusted by changing the shape of the triangle, and flexible self-adaptation up and down is realized; the cleaning disc group is integrated with a universal movable joint, a floating brushing and a magnetic attraction limiting component, the universal joint provides multiple rotation degrees of freedom, the floating brushing realizes elastic fitting, and the magnetic attraction limiting component is precisely limited in distance by magnet adsorption and a bull's eye wheel, thereby preventing falling and jamming. The application has high flexibility and complex surface self-adaptive fitting capability, and cleaning quality and efficiency are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of special cleaning equipment technology, and more specifically, to a cleaning trolley with an adaptive cleaning mechanism that can rotate in place. Background Technology

[0002] In shipbuilding, repair, maintenance of large storage tanks, and steel structural components, rust removal and cleaning of steel surfaces such as the dock bottom and hull plating are crucial and labor-intensive processes. With the development of automation technology, using cleaning carts to replace manual labor has become an industry trend.

[0003] However, existing cleaning carts still have the following shortcomings in practical applications: Existing cleaning trolleys mostly use traditional Ackermann steering mechanisms or similar steering methods to automobiles. This structure determines that they have a large turning radius. In working environments with narrow spaces and many obstacles, such as the bottom of a dock, conventional cleaning trolleys have difficulty adjusting their direction and position flexibly. Frequent reversing and turning are not only time-consuming, but also easily create blind spots in the cleaning process, resulting in low work efficiency.

[0004] Steel working surfaces (such as ship hull plates and dock bottoms) are often not perfectly flat, typically exhibiting complex shapes including welds, curvature, and unevenness. Existing cleaning trolleys often use rigidly connected or simple single-axis hinged cleaning discs. When encountering undulating or curved surfaces, the cleaning discs cannot automatically conform to the working surface, resulting in uneven cleaning intensity, missed areas, or substandard cleaning results. Furthermore, some cleaning equipment using magnetic attachment often has a fixed magnetic structure. When traversing uneven surfaces, the distance between the magnet and the steel plate fluctuates, easily causing unstable attraction that leads to the equipment falling, or jamming due to insufficient spacing.

[0005] In some cleaning vehicles that use range-extended electric motors, the internal combustion engine and electrical equipment generate a lot of heat when running in a closed or semi-closed compartment for a long time. Existing equipment often lacks effective heat dissipation and dust and water protection designs, which can easily lead to malfunctions and shutdowns due to overheating, affecting the continuity of operations.

[0006] In summary, the industry urgently needs a cleaning trolley that can rotate in place to adapt to confined spaces and whose cleaning mechanism can adaptively conform to steel surfaces, in order to improve the flexibility, quality, and reliability of cleaning operations. Summary of the Invention

[0007] The purpose of this invention is to provide a cleaning trolley with an adaptive cleaning mechanism and the ability to rotate in place, in order to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following solution: A cleaning trolley with an adaptive cleaning mechanism and capable of rotating in place includes: Central base; The stationary four-wheel drive mechanism includes two sets of wheels symmetrically arranged on both sides of the central base. The two sets of wheels can rotate at the same speed and in the same direction to achieve direct drive forward or backward, and can rotate at the same speed and in opposite directions to achieve stationary turning. A swing arm assembly, which is rotatably mounted on the central base; The lifting mechanism, connected to the swing arm assembly, includes a lifting drive assembly and an elastic lifting assembly; An adaptive magnetic cleaning tray assembly is connected to the lifting mechanism and can be driven by the lifting mechanism to move up and down and adaptively fit the working surface. The lifting mechanism, the swing arm assembly, and the adaptive magnetic cleaning tray assembly form a triangular structure. The shape of the triangular structure is changed by the lifting drive assembly to adjust the position of the adaptive magnetic cleaning tray assembly.

[0009] Furthermore, each of the aforementioned wheel sets includes a central drive assembly, a driven wheel assembly, a sprocket and chain assembly, and a tensioner assembly; The central drive unit is located in the middle and includes a drive motor, a reduction gear assembly connected to the drive motor, and a drive sprocket that is driven to rotate by the reduction gear assembly. The driven wheel assembly is provided in two sets, which are respectively located in front of and behind the central drive assembly via wheel assembly side plates. The driven wheel assembly includes a driven wheel and a driven sprocket coaxially connected to the driven wheel. The sprocket and chain assembly includes a chain, which is wound between the driving sprocket and the corresponding driven sprocket; The tensioning wheel assembly is mounted on the side plate of the wheel assembly and is used to press the chain.

[0010] Furthermore, the reduction assembly includes a planetary reducer and a worm gear reducer, and the drive motor drives its output shaft to rotate after undergoing two-stage reduction through the planetary reducer and the worm gear reducer in sequence; The driving sprocket includes a left driving sprocket and a right driving sprocket symmetrically arranged on both sides of the motor shaft of the worm gear reducer. The left driving sprocket and the right driving sprocket rotate in the same direction and are respectively driven to the driven wheel assembly in front and the driven wheel assembly in the rear via chains.

[0011] Furthermore, the swing arm assembly includes a swing arm electric hydraulic cylinder, a rotary push rod base, a rotary support, and a rotary tube; The slewing support is mounted on the central base, and the slewing tube is disposed on the slewing support; The swing arm electric hydraulic cylinder is connected to the rotary push rod base. The extension and retraction of the swing arm electric hydraulic cylinder pushes the rotary push rod base, thereby driving the rotary tube and the entire swing arm assembly to rotate.

[0012] Furthermore, the lifting drive assembly includes a lifting electric hydraulic cylinder, a lifting assembly base plate, a slide rail, a slider, and a spring connecting plate; The base plate of the lifting assembly is connected to the rotary tube, and the slide rail and the lifting electric hydraulic cylinder are fixed to the base plate of the lifting assembly. The lifting electric hydraulic cylinder is connected to the spring connecting plate, the spring connecting plate is connected to the slider, and the slider is slidably mounted on the slide rail; The top of the rotary tube is hinged to a square tube sleeve, and an extended square tube is sleeved inside the square tube sleeve. The adaptive magnetic cleaning disc assembly is hinged to the end of the extended square tube. One end of the elastic lifting assembly is hinged to the spring connecting plate, and the other end is hinged to the end of the square tube sleeve.

[0013] Furthermore, the adaptive magnetic cleaning tray assembly includes a tray base plate, a universal joint assembly, a rotating cleaning assembly, a floating brush assembly, and a magnetic limiting assembly. The universal joint assembly is mounted above the disk base plate and is used to connect with the lifting mechanism to provide vertical and horizontal rotational freedom. The rotary cleaning assembly is installed in the middle of the disk substrate; The floating scrubbing assembly is installed below the disk base plate and is elastically connected to the disk base plate through an elastic element. The magnetic attraction limiting components are installed on both sides of the plate substrate to attract the steel working surface and limit the contact distance.

[0014] Furthermore, the universal joint assembly includes a universal fixed lug, a movable universal center, and a movable universal upper part; Two universal fixing ears are provided and fixed to the upper part of the plate body base. The universal fixing ears are hinged to the movable universal center to form the first movable joint, which is used to realize the up and down flipping of the cleaning plate assembly. The movable universal center is hinged to the upper part of the movable universal to form a second movable joint, which is used to realize the left and right flipping of the cleaning tray assembly.

[0015] Furthermore, the rotary cleaning assembly includes a rotating flange, a rotating flange clamp, a rotating body, a cutter head, and a vacuum recovery flange pipe; The rotating flange and vacuum recovery flange tube are fixed to the upper part of the disk base plate; the rotating flange clamp is fixed to the rotating flange; The rotating body is threadedly connected to the cutter head and is fixed to the disc base plate by the rotating body flange and the rotating body flange clamp.

[0016] Furthermore, the floating brush assembly includes a lower pressure cover, a brush pressure cover, a spring, and a brush; The lower pressure cover is fixed below the disk base plate, and the brush pressure cover is located below the lower pressure cover through a silicone pad and connected by a clamp. The spring is located between the disk base plate and the brush cover, and the brush is fixed to the brush cover.

[0017] Furthermore, the magnetic attraction limiting assembly includes a square magnet fixing frame, a magnet assembly, and a bullseye wheel; The square magnet fixing bracket is provided with four parts, which are fixed on both sides of the disk base plate; The magnet assembly includes a square magnet and a square magnet cover. The square magnet is placed inside the square magnet cover and sealed with glue. The magnet assembly is fixed on the square magnet mounting bracket. Both feet of the square magnet fixing bracket are equipped with bullseye wheels, which are used to roll on the working surface and limit the distance between the magnet assembly and the steel working surface.

[0018] Compared with the prior art, the present invention has the following beneficial effects: This invention employs a stationary four-wheel drive mechanism, which uses the opposite rotation of the two wheel sets at the same speed to form a tank-like reverse four-wheel drive rotation, enabling the vehicle to rotate 360° on the spot. This breaks the turning radius limitation imposed by traditional cleaning truck steering mechanisms, allowing for flexible position adjustment in narrow spaces with numerous obstacles, such as dock bottoms. Frequent turning can be achieved without reversing, eliminating blind spots in cleaning and greatly improving operational efficiency.

[0019] The triangular structure formed by the lifting mechanism, swing arm assembly, and cleaning disc assembly, combined with the telescopic extension of the elastic lifting assembly, gives the cleaning disc assembly flexible adaptive capabilities in the vertical direction. Simultaneously, the universal joint assembly at the top of the cleaning disc assembly provides two degrees of freedom for tilting in both vertical and horizontal directions, while the floating brush assembly at the bottom uses springs to achieve elastic contact of the brushes. This triple adaptive mechanism allows the cleaning disc to perfectly conform to complex steel surfaces such as welds, curves, and uneven surfaces, ensuring uniform cleaning intensity and completely eliminating missed areas and substandard cleaning. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the cleaning cart in an embodiment of the present invention; Figure 2 This is an exploded schematic diagram (a) of the cleaning cart in an embodiment of the present invention; Figure 3 This is a schematic diagram (II) of an explosion of the cleaning cart in an embodiment of the present invention; Figure 4 This is an exploded view of the wheel assembly structure in an embodiment of the present invention; Figure 5 This is an exploded view of the adaptive magnetic cleaning tray assembly in an embodiment of the present invention; Figure 6 This is a schematic diagram of the motion transmission of the wheel assembly in an embodiment of the present invention; Figure 7 , 8 This is a schematic diagram of the movement of the two movable joints of the adaptive magnetic cleaning disc assembly in an embodiment of the present invention.

[0022] Explanation of reference numerals in the attached figures: 1. Filler cap; 2. Main cover; 3. Fuel tank; 4. Diesel range extender; 5. Center base; 6. Wheel assembly; 7. M24 bolt assembly; 8. Adaptive magnetic cleaning disc assembly; 9. Push-up electric hydraulic cylinder; 10. Extension square tube; 11. Louver; 12. Main cover; 13. Rotary round tube; 14. Push-up assembly base plate; 15. Slide rail; 16. Square tube sleeve; 17. Nitrogen spring assembly; 18. Spring connecting plate; 19. Slider; 20. Rotary support; 21. Rotary push rod base; 22. Swing arm electric hydraulic cylinder; 23. Battery pack; 24. Electronic control assembly; 25. Display screen. 26. Emergency stop switch; 27. Cooling fan; 28. Side wheel cover; 29. ​​Top connecting plate; 30. Chain; 31. Tensioner sprocket assembly; 32. Left drive sprocket; 33. Bearing housing; 34. Front and rear tensioner fixing plates; 35. M12 connecting bolt; 36. Motor shaft; 37. Worm gear reducer; 38. Motor base plate flange; 39. Front section of motor waterproof box; 40. Planetary reducer; 41. Drive motor; 42. M6 connecting bolt; 43. Middle section of motor waterproof box; 44. M8 connecting bolt; 45. Bearing housing; 46. Right drive sprocket; 47. Tensioner 48. Sprocket assembly; 49. Chain; 50. Driven sprocket; 51. Lower tensioner fixing plate; 52. M10 connecting bolt; 53. Side plate of the sprocket assembly; 54. M12 lock nut; 55. M16 lock nut; 56. Bearing housing; 57. Bushing; 58. Driven wheel; 59. Wheel axle flange; 60. Wheel axle; 61. Bushing; 62. Driven sprocket; 63. Front and rear tensioner fixing plates; 64. Motor driver; 65. Tensioner sprocket assembly; 66. Motor waterproof box rear cover; 67. Waterproof connector; 68. Movable universal joint; 69. Vacuum recovery flange pipe; 60. Rotating body method 70. Rotating body flange clamp; 71. Square magnet fixing bracket; 72. Square magnet; 73. Square magnet cover; 74. Brush cover; 75. Brush; 76. Cutter disc; 77. Silicone pad; 78. Spring; 79. Clamp; 80. Lower cover; 81. Bullseye wheel; 82. M16 lock nut; 83. Fixing bolt; 84. Disc base plate; 85. Rotating body; 86. M16 bolt; 87. Bushing; 88. M16 lock nut; 89. Universal fixing ear; 90. M16 bolt; 91. Bushing; 92. M16 lock nut; 93. Movable universal center. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] Example 1: like Figure 1-8 As shown, this embodiment provides a cleaning trolley with an adaptive cleaning mechanism and the ability to rotate in place, mainly used for rust removal and cleaning operations on steel surfaces such as shipbuilding, large storage tanks, and steel structural components. The cleaning trolley mainly includes a central base 5, a four-wheel drive mechanism for in-place rotation, a swing arm assembly, a lifting mechanism, an adaptive magnetic cleaning disc assembly 8, and a main cover 2, among other core components.

[0025] Specifically, the central base 5 serves as the load-bearing base of the entire vehicle, and the stationary four-wheel drive mechanism includes two sets of wheel sets 6 symmetrically arranged on both sides of the central base 5. Under the control of the electronic control group 24, the two sets of wheel sets 6 can rotate at the same speed and in the same direction, thereby forming a four-wheel direct drive to make the vehicle move forward or backward. When the space on both sides is limited and a stationary turn is required, the two sets of wheel sets 6 can rotate in opposite directions at the same speed, that is, one side moves forward and the other side moves backward, forming a "tank"-like reverse four-wheel drive rotation, thereby realizing a 360° turn of the vehicle body on the spot, which greatly improves the operational flexibility in narrow environments with many obstacles, such as the bottom of a dock.

[0026] The swing arm assembly is rotatably mounted on the central base 5, serving as the support arm for the cleaning tray assembly. The lifting mechanism is connected to the swing arm assembly and includes a lifting drive assembly and an elastic lifting assembly (preferably a nitrogen spring assembly 17 in this embodiment). The adaptive magnetic cleaning tray assembly 8 is connected to the lifting mechanism. With the cooperation of the lifting drive assembly and the elastic lifting assembly, it can not only move up and down to increase the cleaning height but also adaptively conform to different undulating steel working surfaces. Most importantly, the lifting mechanism, the swing arm assembly, and the adaptive magnetic cleaning tray assembly 8 form a stable triangular structure. By extending and retracting the lifting drive assembly to change the shape of this triangular structure, the spatial position and working angle of the adaptive magnetic cleaning tray assembly 8 can be freely adjusted.

[0027] Example 2: Based on the above embodiment one, as follows Figure 2-4 As shown: Each wheel assembly 6 includes a central drive assembly, a driven wheel assembly, a sprocket and chain assembly, and a tensioner assembly. The central drive assembly is located in the middle of the wheel assembly, and its core includes a drive motor 41, a reduction gear assembly connected to the drive motor 41, and a drive sprocket driven by the reduction gear assembly. The reduction gear assembly includes a planetary reducer 40 and a worm gear reducer 37. The drive motor 41 drives the motor shaft 36 of the worm gear reducer 37 to rotate after undergoing two-stage reduction through the planetary reducer 40 and the worm gear reducer 37. The drive sprocket includes a left drive sprocket 32 ​​and a right drive sprocket 46 symmetrically arranged on both sides of the motor shaft 36. The left drive sprocket 32 ​​and the right drive sprocket 46 rotate in the same direction with the motor shaft 36.

[0028] The driven wheel assembly has two sets, front and rear, respectively located in front of and behind the central drive assembly via wheel assembly side plates 52. The driven wheel assembly includes a driven wheel 57 and driven sprockets (front driven sprocket 49 and rear driven sprocket 61) coaxially connected to the driven wheel 57. The specific assembly relationship is as follows: on one side of the axle 59, the bushing 56, the rear driven sprocket 61, and the bearing seat 55 are connected in series and secured with an M16 lock nut 54; on the other side, the driven wheel 57, the axle flange 58, the bushing 60, and the bearing seat 55 are connected in series and secured with an M16 lock nut 54. The sprocket and chain assembly includes a front chain 48 and a rear chain 30. Chain 48 is wound between the right drive sprocket 46 and the front driven sprocket 49, and chain 30 is wound between the left drive sprocket 32 ​​and the rear driven sprocket 61. Thus, the power of the drive motor 41 is transmitted through the chain to drive the two sets of driven wheel sets to rotate at the same speed and in the same direction, forming a dual-wheel drive within each set of wheels.

[0029] To ensure the accuracy of chain drive, a tensioner assembly is installed on the side plate 52 of the wheel set to tighten the chain. The tensioner assembly consists of a front tensioner assembly, a rear tensioner assembly, and a bottom tensioner assembly. Specifically, the front tensioner assembly comprises a front tensioner fixing plate 34 and a tensioner sprocket assembly 31; the rear tensioner assembly comprises a rear tensioner fixing plate 62 and a tensioner sprocket assembly 64; and the bottom tensioner assembly comprises a bottom tensioner fixing plate 50 and a tensioner sprocket assembly 47. During assembly, the two wheel set side plates 52 are fixed to the corresponding holes of each tensioner fixing plate using M10 connecting bolts 51. The chain is then threaded through and tightened to the standard value using the corresponding tensioner sprocket assembly. This effectively prevents chain slippage or chain derailment caused by chain slack, significantly extending the service life of the transmission system.

[0030] Example 3: Based on the above embodiments, such as Figure 2-3 As shown: The swing arm assembly, from bottom to top, includes a swing arm electric hydraulic cylinder 22, a rotary push rod base 21, a rotary support 20, and a rotary tube 13. The rotary support 20 is mounted on the central base 5, and the rotary tube 13 is located on the rotary support 20. The cylinder body of the swing arm electric hydraulic cylinder 22 is hinged to the central base 5, and its piston rod is connected to the rotary push rod base 21. When the swing arm electric hydraulic cylinder 22 extends or retracts, it pushes the rotary push rod base 21, thereby causing the rotary tube 13 and the entire swing arm assembly to rotate left and right around the rotary support 20. At the same time, the extension and retraction distance of the hydraulic cylinder limits the left and right swing range of the swing arm, achieving precise positioning.

[0031] The lifting drive assembly includes a lifting electric hydraulic cylinder 9, a lifting assembly base plate 14, a slide rail 15, a slider 19, and a spring connecting plate 18. The lifting assembly base plate 14 is fixedly connected to the rotary tube 13, and the slide rail 15 and the lifting electric hydraulic cylinder 9 are fixed on the lifting assembly base plate 14. The piston rod of the lifting electric hydraulic cylinder 9 is connected to the spring connecting plate 18, and the spring connecting plate 18 is in turn connected to the slider 19, which is slidably mounted on the slide rail 15.

[0032] A square tube sleeve 16 is hinged to the top of the rotating circular tube 13 (e.g., connected by bolts). An extension square tube 10 is fitted inside the square tube sleeve 16. The extension square tube 10 can extend and retract within a certain range within the square tube sleeve 16. The adaptive magnetic cleaning disc assembly 8 is connected and fixed to the end of the extension square tube 10. The elastic lifting assembly is preferably a nitrogen spring assembly 17, one end of which is hinged to the spring connecting plate 18, and the other end is hinged to the end of the square tube sleeve 16.

[0033] The core mechanism of this embodiment is as follows: the adaptive magnetic cleaning disc assembly 8 is connected and fixed to the extension square tube 10, and then connected and fixed to the nitrogen spring assembly 17, so that the disc assembly, spring assembly, swing arm rotating round tube 13, and square tube (square tube sleeve 16 and extension square tube 10) form a triangular structure. During operation, the push electric hydraulic cylinder 9 extends or retracts, pushing the spring connecting plate 18 and slider 19 to move on the slide rail 15, thereby changing the position of the bottom fulcrum of the nitrogen spring assembly 17, forcing the shape of the triangular structure to change, so that the position of the adaptive magnetic cleaning disc assembly 8 can be freely adjusted. At the same time, when encountering a raised working surface, the nitrogen spring assembly 17 is compressed under force; when encountering a depression, the nitrogen spring assembly 17 extends, thereby realizing the flexible self-adaptation of the cleaning disc assembly in the direction perpendicular to the working surface.

[0034] Example 4: Based on the above embodiments, such as Figure 5 As shown: The adaptive magnetic cleaning tray assembly 8 includes a tray base plate 84, a universal joint assembly, a rotating cleaning assembly, a floating brush assembly, and a magnetic limiting assembly.

[0035] The universal joint assembly is mounted above the disk base plate 84 and is used to connect with the movable universal part 67 of the lifting mechanism. This assembly includes universal mounting ears 89, a movable universal center 93, and the movable universal part 67. The two universal mounting ears 89 are fixed to the upper part of the disk base plate 84 by fixing bolts 83. The universal mounting ears 89 and the movable universal center 93 are hinged together by M16 bolts 90, bushings 91, and M16 locking nuts 92 to form the first movable joint. The movable universal center 93 and the movable universal part 67 are hinged together by M16 bolts 86, bushings 87, and M16 locking nuts 88 to form the second movable joint. When the movable universal part 67 is fixed in place by the lifting mechanism, the first joint provides freedom in the left-right direction, enabling the cleaning disk assembly to flip up and down; the second joint provides freedom in the front-back direction, enabling the cleaning disk assembly to flip left and right. The universal ring structure formed by two joints allows the cleaning disc to conform to complex curved working surfaces in all directions, solving the problem of leakage when encountering undulations in traditional rigid connection cleaning discs.

[0036] The rotary cleaning assembly is installed in the middle of the disc base plate 84 and includes a rotary flange 69, a rotary flange clamp 70, a rotary body 85, a cutter head 76, and a vacuum recovery flange pipe 68. The rotary flange 69 and the vacuum recovery flange pipe 68 are fixed to the upper part of the disc base plate 84 by fixing bolts 83; the rotary flange clamp 70 is fixed to the rotary flange 69; the rotary body 85 and the cutter head 76 are connected together by threads and are secured to the disc body by being inserted between the rotary flange 69 and the rotary flange clamp 70. During operation, the rotary body 85 drives the cutter head 76 to rotate at high speed to strike rust, while the vacuum equipment generates negative pressure through the vacuum recovery flange pipe 68, instantly removing the removed dirt, achieving immediate cleaning.

[0037] The floating scrubbing assembly is installed below the disc base plate 84 and includes a lower pressure cover 80, a brush cover 74, springs 78, and brushes 75. The lower pressure cover 80 is fixed to the bottom of the disc base plate 84 by fixing bolts 83. The brush cover 74 is located below the lower pressure cover 80 by silicone pads 77, and the assembly is locked together by two sets of clamps 79. Six springs 78 are evenly distributed between the disc base plate 84 and the brush cover 74, and the brushes 75 are fixed to the brush cover 74. Through the elastic floating of the springs 78, the brushes 75 can always seal the periphery of the blade disc 76 with appropriate pressure, preventing dust from overflowing and automatically repositioning themselves on uneven surfaces to ensure thorough cleaning.

[0038] The magnetic attraction limiting assembly is installed on both sides of the plate 84, including square magnet mounting brackets 71, magnet groups, and bullseye wheels 81. Four square magnet mounting brackets 71 are fixed to both sides of the plate 84 by fixing bolts 83. The magnet group consists of square magnets 72 and square magnet covers 73. The square magnets 72 are placed inside the square magnet covers 73 and sealed with glue to form an independent magnet module, preventing demagnetization due to water ingress. The magnet group is then fixed to the square magnet mounting brackets 71. Each square magnet mounting bracket 71 has bullseye wheels 81 installed on both feet, connected by M16 locking nuts 82. When the magnet group attracts the cleaning plate to the steel working surface, the bullseye wheels 81 roll in contact with the working surface, changing the original sliding friction into rolling friction. Simultaneously, the support height of the bullseye wheels 81 strictly limits the distance between the square magnets 72 and the steel surface. This design completely solves the contradiction of traditional magnetic suction devices where "the suction is insufficient and the device falls when the spacing is too large, and the device gets stuck when the spacing is too small." It ensures that the magnetic suction is always in the optimal constant state. Combined with the universal joint, it allows the cleaning disc to move smoothly on complex surfaces without falling off.

[0039] Example 5: Based on the above embodiments, such as Figure 2-3 As shown, this embodiment provides a detailed description of the vehicle's protection, power, and cooling systems.

[0040] This cleaning vehicle also includes a main cover 2, a cooling system, and a power control system. The main cover 2 completely covers the battery pack 23, the electronic control unit 24, the fuel tank 3, and the diesel range extender 4, and is assembled on the central base 5, serving to prevent dust and water damage. The power control system adopts a range-extender design. The diesel range extender 4 generates electricity to charge the battery pack 23, and automatically stops supplying power when the battery charge reaches a certain threshold to ensure battery life and avoid overcharging and over-discharging. The vehicle's movement and actions are precisely controlled by the electronic control unit 24.

[0041] To address the significant heat generated during the operation of the diesel range extender 4's generator and electronic control equipment, this embodiment employs a unique cooling system. A cooling fan 27 is installed at the rear of the main housing 2, with a waterproof cap extending above it to prevent water from entering the fan during washing operations. Simultaneously, louvers 11 are provided at the front and sides of the main housing 2, forming a through-flow air duct: external cool air enters through the louvers 11, flows past the heat-generating components, and is then forcibly extracted by the rear cooling fan 27, maintaining internal air circulation and significantly increasing cooling efficiency, thus preventing electrical equipment malfunctions and shutdowns due to overheating.

[0042] In addition, a display screen 25 and an emergency stop switch 26 are installed on the side of the main cover 2. In case of emergency, the operator can press the emergency stop switch 26 to forcibly cut off the power supply and ensure safe operation. The vehicle's operating status information, such as motor current, voltage, travel speed, and swing arm speed, is displayed in real time on the display screen 25 for easy monitoring and adjustment by the operator. The fuel filler cap 1 is located on top of the main cover 2, allowing for refueling of the fuel tank 3 without opening the main cover 2. The main cover 12 is used for opening during routine inspection and maintenance.

[0043] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A cleaning trolley with an adaptive cleaning mechanism and capable of rotating in place, characterized in that, include: Central base; The stationary four-wheel drive mechanism includes two sets of wheels symmetrically arranged on both sides of the central base. The two sets of wheels can rotate at the same speed and in the same direction to achieve direct drive forward or backward, and can rotate at the same speed and in opposite directions to achieve stationary turning. A swing arm assembly, which is rotatably mounted on the central base; The lifting mechanism, connected to the swing arm assembly, includes a lifting drive assembly and an elastic lifting assembly; An adaptive magnetic cleaning tray assembly is connected to the lifting mechanism and can be driven by the lifting mechanism to move up and down and adaptively fit the working surface. The lifting mechanism, the swing arm assembly, and the adaptive magnetic cleaning tray assembly form a triangular structure. The shape of the triangular structure is changed by the lifting drive assembly to adjust the position of the adaptive magnetic cleaning tray assembly.

2. A cleaning trolley with an adaptive cleaning mechanism and capable of rotating in place, as described in claim 1, is characterized in that... Each wheel assembly includes a central drive assembly, a driven wheel assembly, a sprocket and chain assembly, and a tensioner assembly. The central drive unit is located in the middle and includes a drive motor, a reduction gear assembly connected to the drive motor, and a drive sprocket that is driven to rotate by the reduction gear assembly. The driven wheel assembly is provided in two sets, which are respectively located in front of and behind the central drive assembly via wheel assembly side plates. The driven wheel assembly includes a driven wheel and a driven sprocket coaxially connected to the driven wheel. The sprocket and chain assembly includes a chain, which is wound between the driving sprocket and the corresponding driven sprocket; The tensioning wheel assembly is mounted on the side plate of the wheel assembly and is used to press the chain.

3. A cleaning trolley with an adaptive cleaning mechanism and capable of rotating in place, as described in claim 2, is characterized in that... The reduction assembly includes a planetary reducer and a worm gear reducer. The drive motor drives its output shaft to rotate after undergoing two-stage reduction through the planetary reducer and the worm gear reducer in sequence. The driving sprocket includes a left driving sprocket and a right driving sprocket symmetrically arranged on both sides of the motor shaft of the worm gear reducer. The left driving sprocket and the right driving sprocket rotate in the same direction and are respectively driven to the driven wheel assembly in front and the driven wheel assembly in the rear via chains.

4. A cleaning trolley with an adaptive cleaning mechanism and capable of rotating in place, as described in claim 1, is characterized in that... The swing arm assembly includes a swing arm electric hydraulic cylinder, a rotary push rod base, a rotary support, and a rotary tube; The slewing support is mounted on the central base, and the slewing tube is disposed on the slewing support; The swing arm electric hydraulic cylinder is connected to the rotary push rod base. The extension and retraction of the swing arm electric hydraulic cylinder pushes the rotary push rod base, thereby driving the rotary tube and the entire swing arm assembly to rotate.

5. A cleaning trolley with an adaptive cleaning mechanism and capable of rotating in place, as described in claim 4, is characterized in that... The lifting drive assembly includes a lifting electric hydraulic cylinder, a lifting assembly base plate, a slide rail, a slider, and a spring connecting plate; The base plate of the lifting assembly is connected to the rotary tube, and the slide rail and the lifting electric hydraulic cylinder are fixed to the base plate of the lifting assembly. The lifting electric hydraulic cylinder is connected to the spring connecting plate, the spring connecting plate is connected to the slider, and the slider is slidably mounted on the slide rail; The top of the rotary tube is hinged to a square tube sleeve, and an extended square tube is sleeved inside the square tube sleeve. The adaptive magnetic cleaning disc assembly is hinged to the end of the extended square tube. One end of the elastic lifting assembly is hinged to the spring connecting plate, and the other end is hinged to the end of the square tube sleeve.

6. A cleaning trolley with an adaptive cleaning mechanism and capable of rotating in place, as described in claim 1, is characterized in that... The adaptive magnetic cleaning tray assembly includes a tray base plate, a universal joint assembly, a rotating cleaning assembly, a floating brush assembly, and a magnetic limiting assembly. The universal joint assembly is mounted above the disk base plate and is used to connect with the lifting mechanism to provide vertical and horizontal rotational freedom. The rotary cleaning assembly is installed in the middle of the disk substrate; The floating scrubbing assembly is installed below the disk base plate and is elastically connected to the disk base plate through an elastic element. The magnetic attraction limiting components are installed on both sides of the plate substrate to attract the steel working surface and limit the contact distance.

7. A cleaning trolley with an adaptive cleaning mechanism and capable of rotating in place, as described in claim 6, is characterized in that... The universal joint assembly includes a universal fixed lug, a movable universal center, and a movable universal upper part; Two universal fixing ears are provided and fixed to the upper part of the plate body base. The universal fixing ears are hinged to the movable universal center to form the first movable joint, which is used to realize the up and down flipping of the cleaning plate assembly. The movable universal center is hinged to the upper part of the movable universal to form a second movable joint, which is used to realize the left and right flipping of the cleaning tray assembly.

8. A cleaning trolley with an adaptive cleaning mechanism and capable of rotating in place, as described in claim 6, is characterized in that... The rotary cleaning assembly includes a rotating flange, a rotating flange clamp, a rotating body, a cutter head, and a vacuum recovery flange pipe; The rotating flange and vacuum recovery flange tube are fixed to the upper part of the disk base plate; the rotating flange clamp is fixed to the rotating flange; The rotating body is threadedly connected to the cutter head and is fixed to the disc base plate by the rotating body flange and the rotating body flange clamp.

9. A cleaning trolley with an adaptive cleaning mechanism and capable of rotating in place, as described in claim 6, is characterized in that... The floating scrubbing assembly includes a lower pressure cover, a brush pressure cover, a spring, and a brush. The lower pressure cover is fixed below the disk base plate, and the brush pressure cover is located below the lower pressure cover through a silicone pad and connected by a clamp. The spring is located between the disk base plate and the brush cover, and the brush is fixed to the brush cover.

10. A cleaning trolley with an adaptive cleaning mechanism and capable of rotating in place, as described in claim 6, is characterized in that... The magnetic attraction limiting assembly includes a square magnet fixing frame, a magnet assembly, and a bullseye wheel; The square magnet fixing bracket is provided with four parts, which are fixed on both sides of the disk base plate; The magnet assembly includes a square magnet and a square magnet cover. The square magnet is placed inside the square magnet cover and sealed with glue. The magnet assembly is fixed on the square magnet mounting bracket. Both feet of the square magnet fixing bracket are equipped with bullseye wheels, which are used to roll on the working surface and limit the distance between the magnet assembly and the steel working surface.

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