Automatic scrubbing equipment and scrubbing method for top of vehicle

Abstract

The invention provides automatic scrubbing equipment for the top of a vehicle and a scrubbing method. The equipment comprises a base frame arranged on a datum plane, a vehicle washing station and a rolling brush frame which are arranged on the base frame, a transverse rolling brush rotationally arranged at one end of the rolling brush frame, and a buffering mechanism arranged between the rolling brush frame and the base frame. A to-be-washed vehicle is attached to the periphery of the transverse rolling brush when entering the vehicle washing station, the rolling brush frame rotates at the top of the base frame, the rolling brush frame rotates towards the bottom of the base frame when the vehicle leaves, the transverse rolling brush scrubs the top of the vehicle, and the buffering mechanism can effectively reduce the rotating speed when the rolling brush frame resets. By arranging the buffer mechanism, vehicle damage caused by too fast resetting of the transverse rolling brush is avoided, and the use safety and the user experience are remarkably improved; meanwhile, through cooperation of the rolling brush frame and the buffering mechanism, the risk that the vehicle and the transverse rolling brush are stuck when mechanical faults occur can be reduced, vehicle body damage is avoided, the maintenance cost is greatly reduced, the downtime is greatly shortened, and the beneficial effects of being simple in structure, high in adaptability, low in implementation cost and convenient to popularize and implement are achieved.

Description

Technical Field

[0001] This application belongs to the technical field of automatic car wash equipment, specifically relating to an automatic brushing device and brushing method for the roof of a vehicle. Background Technology

[0002] In existing technologies, automatic brushing equipment for vehicle roofs plays a crucial role in automatic car wash scenarios. It works in conjunction with the conveyor mechanism of the automatic car wash equipment to transport the vehicle to be washed to the designated work station. Then, the horizontal roller brush adheres to the vehicle roof to achieve automatic brushing, effectively removing dust, stains and other debris from the vehicle roof. This improves the automation and cleaning efficiency of vehicle washing, reduces the labor intensity of manual washing, and enhances the user's car wash experience and satisfaction.

[0003] However, current automatic vehicle roof washing equipment on the market has some shortcomings in practical applications. In existing technology, the horizontal roller brushes of such equipment usually rely on their own weight to reset the vehicle after leaving the wash station. However, the reset process lacks an effective buffer and speed limiting mechanism. If the horizontal roller brush rotates too fast during reset, it will violently collide with the top of the vehicle that has not completely left or re-entered the station, causing scratches, dents, and other damage to the vehicle's paint, significantly reducing the user experience. At the same time, when the conveyor mechanism or drive mechanism of the automatic car wash equipment malfunctions, the vehicle is prone to jamming with the horizontal roller brush in operation or during the reset process. This not only directly causes crush damage to the sides and top of the vehicle, but also prevents subsequent vehicles from being properly conveyed in continuous car wash scenarios, leading to collisions between vehicles. Furthermore, the jammed state will cause serious wear and tear on the core components of the automatic car wash equipment, such as the conveyor track and drive motor, increasing equipment maintenance costs and downtime.

[0004] Therefore, in order to comprehensively improve the safety, operational stability, and user experience of automatic washing equipment used on vehicle roofs, and to reduce the damage caused by equipment failures to vehicles and the equipment itself, it is now urgent to improve its reset mechanism and anti-jamming structure to enhance the reliability and adaptability of the equipment. Summary of the Invention

[0005] This application addresses the technical problems in existing automatic washing equipment for vehicle roofs, where the horizontal roller brush relies on self-realignment, lacks an effective buffering and speed limiting mechanism, and excessively rapid repositioning can easily collide with the vehicle, causing damage such as scratches and dents to the paint surface; furthermore, when the equipment malfunctions, the vehicle is easily jammed with the horizontal roller brush, which not only damages the vehicle and may cause collisions between vehicles in front and behind, but also wears out the core components of the equipment, increases maintenance costs and downtime. Therefore, this application proposes an automatic washing equipment for vehicle roofs.

[0006] In order to solve the above-mentioned technical problems, this application also proposes a brushing method for the roof of a vehicle.

[0007] This application adopts the following solution: This application provides an automatic brushing device for the top of a vehicle, including a base frame on a reference surface, a car wash station on the base frame, a roller brush frame on the base frame, a horizontal roller brush rotatably mounted on one end of the roller brush frame, and a buffer mechanism between the roller brush frame and the base frame. When the vehicle to be washed enters the car wash station, the vehicle to be washed abuts against the outer periphery of the horizontal roller brush, causing the roller brush frame to rotate towards the top of the base frame. When the vehicle to be washed leaves the car wash station, the roller brush frame rotates towards the bottom of the base frame. The horizontal roller brush is used to brush the top of the vehicle to be washed, and the buffer mechanism is used to reduce the speed of the roller brush frame when rotating towards the bottom of the base frame.

[0008] In some feasible embodiments, the buffer mechanism includes a coupling disposed on the rotating shaft of the roller brush frame, and buffer components disposed at the front and rear ends of the coupling, respectively. When the vehicle to be washed leaves the car wash station, the buffer components are used to apply a lifting force to the coupling to reduce the speed of the roller brush frame as it rotates toward the bottom of the base frame.

[0009] In some feasible embodiments, the buffer assembly includes a damping spring disposed between the rear end of the coupling and the base frame, and a telescopic cylinder disposed between the front end of the coupling and the base frame. The movable end of the damping spring is disposed at the rear end of the coupling, the fixed end of the damping spring is disposed on the base frame, the output end of the telescopic cylinder is disposed at the front end of the coupling, and the fixed end of the telescopic cylinder is disposed on the base frame.

[0010] In some feasible embodiments, a counterweight is also provided on the other end of the roller brush frame. The weight of the horizontal roller brush is greater than the weight of the counterweight. In the initial state, the horizontal roller brush is located at the bottom of the car wash station and on the side close to the entrance of the car wash station, while the counterweight is located on the side away from the entrance of the car wash station.

[0011] In some feasible embodiments, a limiting mechanism is also provided on the base frame on both sides of the car wash station. When the roller brush frame rotates relative to the base frame, the limiting mechanism is used to limit the rotation angle of the roller brush frame relative to the base frame.

[0012] In some feasible embodiments, the limiting mechanism includes a front limiting component disposed at the front end of the car wash station. The front limiting component includes a front limiting seat disposed on the base frame and a front limiting block disposed on the front limiting seat. In the initial state, the roller brush frame abuts against the front limiting block to limit the initial included angle between the roller brush frame and the reference surface.

[0013] In some feasible embodiments, the limiting mechanism includes a rear limiting component located at the rear end of the car wash station. The rear limiting component includes a rear limiting seat located on the base frame and a rear limiting block located on the rear limiting seat. When the vehicle to be washed enters the car wash station and drives the roller brush frame to rotate towards the top of the car wash station, the roller brush frame can abut against the rear limiting block to limit the rotation angle of the roller brush frame.

[0014] In some feasible embodiments, the system further includes bearing seats disposed on both sides of the base frame, with the rotating shaft portions on both sides of the roller brush frame matched and disposed within the bearing seats.

[0015] In some feasible embodiments, a spray assembly disposed on the base frame is also included, the output end of the spray assembly facing the horizontal roller brush, the spray assembly being used to spray cleaning fluid onto the horizontal roller brush to wet the horizontal roller brush.

[0016] Compared with the prior art, this application has the following beneficial effects:

[0017] This application provides an automatic vehicle roof washing device, comprising a base frame mounted on a reference surface, a washing station and a roller brush frame mounted on the base frame, a horizontal roller brush rotatably mounted at one end of the roller brush frame, and a buffer mechanism disposed between the roller brush frame and the base frame. When the vehicle to be washed enters the washing station, it comes into contact with the outer periphery of the horizontal roller brush, and the top of the roller brush frame rotates. When the vehicle leaves, the roller brush frame rotates towards the bottom of the base frame, thus washing the vehicle roof. The buffer mechanism effectively reduces the rotational speed of the roller brush frame during its reset. This application avoids vehicle damage caused by excessively rapid reset of the horizontal roller brush by incorporating a buffer mechanism, significantly improving safety and user experience. Simultaneously, the cooperation between the roller brush frame and the buffer mechanism reduces the risk of the vehicle jamming with the horizontal roller brush in case of mechanical failure, preventing vehicle body damage, significantly reducing maintenance costs and downtime. It has the advantages of simple structure, strong adaptability, low implementation cost, and ease of promotion and implementation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an automatic washing device for the roof of a vehicle in its initial state, as described in this application.

[0019] Figure 2 This is a structural diagram of an automatic washing device for the roof of a vehicle after the horizontal roller brush bristles have been removed.

[0020] Figure 3 This application Figure 2 Sectional view at point AA;

[0021] Figure 4 This application Figure 3 A magnified view of a section at point B in the middle;

[0022] Figure 5 This is a structural schematic diagram from another perspective of an automatic brushing device for the roof of a vehicle according to this application;

[0023] Figure 6 This application Figure 5 A magnified view of a section at point C;

[0024] Figure 7 This is a structural schematic diagram of an automatic washing device for the roof of a vehicle in use, as described in this application.

[0025] Figure 8 This is a structural diagram of an automatic brushing device for the roof of a vehicle in use after the bristles of the horizontal roller brush have been removed.

[0026] Figure 9 This application Figure 8 A magnified view of a section at point DD;

[0027] Figure 10 This application Figure 9 A magnified view of a section at point E in the middle;

[0028] Figure 11 This is a schematic diagram of the structure of the roller brush frame in this application;

[0029] Figure 12 This application Figure 11 A magnified view of a section at point F. Detailed Implementation

[0030] Combination Figures 1 to 12 The following description further illustrates the technical solution proposed in this application. This application adopts the following technical solution: an automatic washing device for the top of a vehicle, comprising a base frame 1 mounted on a reference surface, a car wash station mounted on the base frame 1, a roller brush frame 2 mounted on the base frame 1, a horizontal roller brush 3 rotatably mounted on one end of the roller brush frame 2, and a buffer mechanism 4 disposed between the roller brush frame 2 and the base frame 1. When the vehicle to be washed enters the car wash station, the vehicle abuts against the outer periphery of the horizontal roller brush 3, causing the roller brush frame 2 to rotate towards the top of the base frame 1. When the vehicle to be washed leaves the car wash station, the roller brush frame 2 rotates towards the bottom of the base frame 1. The horizontal roller brush 3 is used to wash the top of the vehicle to be washed, and the buffer mechanism 4 is used to reduce the speed of the roller brush frame 2 when rotating towards the bottom of the base frame 1.

[0031] This application provides an automatic vehicle roof washing device, comprising a base frame mounted on a reference surface, a washing station and a roller brush frame mounted on the base frame, a horizontal roller brush rotatably mounted at one end of the roller brush frame, and a buffer mechanism disposed between the roller brush frame and the base frame. When the vehicle to be washed enters the washing station, it comes into contact with the outer periphery of the horizontal roller brush, and the top of the roller brush frame rotates. When the vehicle leaves, the roller brush frame rotates towards the bottom of the base frame, thus washing the vehicle roof. The buffer mechanism effectively reduces the rotational speed of the roller brush frame during its reset. This application avoids vehicle damage caused by excessively rapid reset of the horizontal roller brush by incorporating a buffer mechanism, significantly improving safety and user experience. Simultaneously, the cooperation between the roller brush frame and the buffer mechanism reduces the risk of the vehicle jamming with the horizontal roller brush in case of mechanical failure, preventing vehicle body damage, significantly reducing maintenance costs and downtime. It has the advantages of simple structure, strong adaptability, low implementation cost, and ease of promotion and implementation.

[0032] In actual implementation, after the equipment is installed, the base frame 1 is fixed to the ground (reference plane), and the car wash station is designated as a fixed path for vehicle travel. The roller brush frame 2 is rotatably connected to the base frame 1, and the horizontal roller brush 3 is rotatably mounted at the free end of the roller brush frame 2 via bearings. The buffer mechanism 4 is hinged at both ends to the corresponding mounting positions on the sides of the base frame 1 and the middle of the roller brush frame 2. When the vehicle to be washed enters the car wash station along the preset path, the top of the vehicle first contacts the outer circumference of the horizontal roller brush 3 and generates a resisting force. This resisting force forms a torque along the rotation direction of the roller brush frame 2, pushing the roller brush frame 2 to rotate around its hinge point with the base frame 1 towards the top of the base frame 1. During this process, the horizontal roller brush 3 rotates relative to the roller brush frame to clean the top of the vehicle to be washed, while the buffer mechanism 4 is gradually stretched or compressed, storing elastic potential energy.

[0033] As vehicles continue to enter the car wash bay, the vehicle's roof remains in close contact with the horizontal roller brush 3. The roller brush holder 2 maintains a rotation angle adapted to the vehicle's roof height, and the horizontal roller brush 3 rotates continuously, its outer bristles scrubbing and cleaning the dust and dirt on the vehicle's roof. During this process, the buffer mechanism 4 is always under stress, using its elastic damping to offset slight bumps or minor changes in the roof's profile during vehicle movement, ensuring that the horizontal roller brush 3 remains in close contact with the roof and preventing blind spots or missed areas.

[0034] As the vehicle leaves the car wash bay, the pressure exerted by the vehicle's top on the horizontal roller brush 3 gradually disappears. The roller brush frame 2, freed from external constraint, rotates back to its initial position due to its own weight, moving closer to the bottom of the base frame 1. At this point, the buffer mechanism 4 reduces the rotational speed of the roller brush frame 2 through its damping characteristics, preventing it from rapidly resetting due to gravity and elastic potential energy and impacting the vehicle. Finally, the roller brush frame 2 returns to its initial position, ready for the next vehicle to be washed.

[0035] In this embodiment, the buffer mechanism 4 includes a coupling 40 disposed on the rotating shaft of the roller brush frame 2, and buffer components 41 disposed on the front and rear ends of the coupling 40 respectively. When the vehicle to be washed leaves the car wash station, the buffer components 41 are used to apply a lifting force to the coupling 40 to reduce the speed of the roller brush frame 2 rotating towards the bottom of the base frame 1.

[0036] In this embodiment, the buffer assembly 41 includes a damping spring 410 disposed between the rear end of the coupling 40 and the base frame 1, and a telescopic cylinder 411 disposed between the front end of the coupling 40 and the base frame 1. The movable end of the damping spring 410 is disposed at the rear end of the coupling 40, the fixed end of the damping spring 410 is disposed on the base frame 1, the output end of the telescopic cylinder 411 is disposed at the front end of the coupling 40, and the fixed end of the telescopic cylinder 411 is disposed on the base frame 1.

[0037] In this embodiment, a counterweight 5 is also provided on the other end of the roller brush frame 2. The weight of the horizontal roller brush 3 is greater than the weight of the counterweight 5. In the initial state, the horizontal roller brush 3 is located at the bottom of the car wash station. The horizontal roller brush 3 is located on the side close to the entrance of the car wash station, and the counterweight 5 is located on the side away from the entrance of the car wash station.

[0038] In actual implementation, after the equipment is installed and debugged, the base frame 1 is fixed to the reference plane, the roller brush frame 2 is hinged to the base frame through the rotating shaft, and the coupling 40 of the buffer mechanism 4 is fitted onto the rotating shaft of the roller brush frame 2, forming a buffer force transmission hub. Since the weight of the horizontal roller brush 3 is greater than the weight of the counterweight 5, under the action of gravity, the roller brush frame 2 rotates naturally around the rotating shaft, so that the horizontal roller brush 3 is at the bottom of the car wash station and close to the entrance, while the counterweight 5 is on the side away from the entrance. At this time, the damping spring 410 is in a natural extension or slight compression state, and the telescopic cylinder 411 is in the initial extended preset position, ensuring that the horizontal roller brush 3 does not affect the normal entry of the vehicle.

[0039] The vehicle to be washed enters the car wash bay along a preset path. The top of the vehicle first contacts the outer periphery of the horizontal roller brush 3 located at the bottom of the bay, generating downward pressure. Because the weight of the horizontal roller brush 3 is greater than that of the counterweight 5, this downward pressure pushes the roller brush frame 2 to rotate around the pivot towards the top of the base frame 1. During this process, the coupling 40 rotates synchronously with the roller brush frame 2, driving the buffer components 41 at both ends to move: the damping spring 410 at the rear end is gradually compressed, generating a reverse elastic damping force, initially buffering the rotation speed of the roller brush frame 2; the telescopic cylinder 411 at the front end is pushed by the coupling 40, and the output end slowly extends, further ensuring the rotational stability of the roller brush frame and preventing the roller brush frame from shaking violently due to the vehicle's excessive entry speed. At the same time, the horizontal roller brush 3 rotates relative to the top of the vehicle to be washed, cleaning the top of the vehicle.

[0040] As the vehicle continues to drive in, the top remains in close contact with the horizontal roller brush 3, and the roller brush holder 2 maintains a tilt angle adapted to the vehicle's height. At this time, the buffer assembly 41 enters a dynamic equilibrium state: the elastic force of the damping spring 410 and the output force of the telescopic cylinder 411 work together to counteract slight bumps during vehicle movement and minor changes in the roof profile, ensuring that the horizontal roller brush 3 always maintains uniform contact pressure with the roof; the counterweight 5 is in a raised state, and its gravity forms a counter-torque through the roller brush holder 2, helping to balance the pressure of the horizontal roller brush 3 on the roof, avoiding excessive pressure that scratches the paint or insufficient pressure that causes missed areas. The horizontal roller brush 3 continues to rotate, completing the thorough removal of dirt from the roof through brush bristle friction.

[0041] As the vehicle leaves the car wash bay, the pressure exerted by the vehicle's top on the horizontal roller brush 3 gradually disappears, disrupting the force balance of the roller brush frame 2. At this point, the buffer assembly 41 and the counterweight 5 work together to reset the roller brush: the rear damping spring 410 releases its elastic potential energy, applying a backward lifting force to the coupling 40; the front telescopic cylinder 411 initiates its reset action, its output end slowly extending to apply a forward lifting force to the coupling 40. These two forces are transmitted to the roller brush frame 2 through the coupling 40, pushing it to flip towards the bottom of the base frame 1. The damping characteristics of the damping spring 410 weaken the reset impact force, while the telescopic cylinder 411 precisely controls the reset speed, preventing the roller brush frame from flipping rapidly. Simultaneously, the weight of the counterweight 5 creates a downward pulling force, assisting the roller brush frame to fall smoothly back down. Finally, the roller brush frame 2 returns to its initial state, and the horizontal roller brush 3 returns to the bottom of the car wash bay, awaiting the next wash.

[0042] In actual implementation, the buffer mechanism 4 adopts a combination design of damping spring 410 and telescopic cylinder 411, breaking through the limitations of a single buffer structure. The damping spring provides basic elastic damping, which can quickly absorb instantaneous impact force; the telescopic cylinder achieves controllable buffering through linear extension and retraction, and precisely adjusts the reset speed. The two work together to avoid violent shaking of the roller brush frame when the vehicle enters, and completely solve the collision risk caused by excessively fast reset, effectively protecting the vehicle body paint and the structure of the equipment itself.

[0043] In actual implementation, the preset car wash path is achieved through a conveyor belt, with the base frame set on both sides of the conveyor belt. A pressure sensor is installed on the telescopic cylinder 411. When a vehicle enters the car wash station, the pressure sensor detects the force on the coupling 40. When the data sensed by the pressure sensor exceeds the preset value, the horizontal roller brush is jammed with the vehicle to be washed. The control module (host computer, mobile phone, tablet, computer) controls the telescopic cylinder to lift the roller brush frame to avoid a violent collision between the horizontal roller brush and the vehicle. The conveyor belt can continue to transport the vehicle normally, avoiding collision between the vehicle and the car wash equipment.

[0044] In this embodiment, a limiting mechanism 6 is also provided on the base frame 1 on both sides of the car wash station. When the roller brush frame 2 rotates relative to the base frame 1, the limiting mechanism 6 is used to limit the rotation angle of the roller brush frame 2 relative to the base frame 1.

[0045] In this embodiment, the limiting mechanism 6 includes a front limiting component 60 disposed at the front end of the car wash station. The front limiting component 60 includes a front limiting seat 600 disposed on the base frame 1 and a front limiting block 601 disposed on the front limiting seat 600. In the initial state, the roller brush frame 2 abuts against the front limiting block 601 to limit the initial included angle between the roller brush frame 2 and the reference surface.

[0046] In this embodiment, in the initial state, the included angle between the roller brush holder 2 and the reference plane is defined as X, and X satisfies the following relationship: 30°≤X≤45°.

[0047] In this embodiment, the limiting mechanism 6 includes a rear limiting component 61 located at the rear end of the car wash station. The rear limiting component 61 includes a rear limiting seat 610 located on the base frame 1 and a rear limiting block 611 located on the rear limiting seat 610. When the vehicle to be washed enters the car wash station and drives the roller brush frame 2 to rotate towards the top of the car wash station, the roller brush frame 2 can abut against the rear limiting block 611 to limit the rotation angle of the roller brush frame 2.

[0048] In actual implementation, after the equipment is installed, the base frame 1 is fixed to the reference plane, the roller brush frame 2 is hinged to the base frame via a rotating shaft, the coupling of the buffer mechanism 4 is fitted onto the rotating shaft, and the counterweight and the horizontal roller brush are located at opposite ends of the roller brush frame. Initially, under the weight difference between the horizontal roller brush and the counterweight, the roller brush frame 2 naturally tilts towards the entrance of the car wash bay, eventually abutting against the front limit block 601 of the front limit assembly 60. At this point, the roller brush frame 2 forms an angle X with the reference plane, strictly satisfying 30°≤X≤45°. This angle design ensures that the horizontal roller brush, positioned at the bottom of the car wash bay, does not obstruct vehicle entry, while also allowing the top of the vehicle to quickly contact the horizontal roller brush upon entry, improving trigger sensitivity.

[0049] The vehicle to be washed enters the car wash bay along a preset path, its top contacting the outer periphery of the horizontal roller brush and applying pressure, pushing the roller brush frame 2 to rotate around the pivot point towards the top of the base frame. During this process, the damping spring of the buffer mechanism contracts and the telescopic cylinder extends, working together to buffer the impact force of the rotation. If the vehicle stops due to a malfunction of the car wash equipment, resulting in prolonged contact time with the horizontal roller brush, the control module will trigger a protection mechanism, controlling the telescopic cylinder to extend to a preset position, pushing the roller brush frame to rotate to a preset maximum angle. At this point, the roller brush frame abuts against the rear limit block 611, and the rear limit component 61 performs its limiting function, preventing the roller brush frame from continuing to rotate, providing space for the vehicle to avoid a violent collision with the car wash equipment.

[0050] After the vehicle leaves the car wash bay, the pressure from the vehicle's top against the horizontal roller brush disappears, and the buffer assembly releases its elastic potential energy, pushing the roller brush frame to flip back to its initial position. During this process, the counterweight assists in accelerating the reset, while the buffer assembly controls the reset speed. When the roller brush frame flips to its initial angle X, it again abuts against the front limit block 601, completing a precise reset and ensuring the consistency of the initial posture for each subsequent wash without the need for additional adjustments.

[0051] In this embodiment, it also includes bearing seats 7 disposed on both sides of the base frame 1, and the rotating shafts on both sides of the roller brush frame 2 are matched and disposed in the bearing seats 7.

[0052] In this embodiment, a spray assembly 8 is also provided on the base frame 1. The output end of the spray assembly 8 faces the horizontal roller brush 3. The spray assembly 8 is used to spray cleaning liquid onto the horizontal roller brush 3 to wet the horizontal roller brush 3.

[0053] To address the technical problems raised in this application, this application also provides an automatic vehicle roof washing method, which employs the aforementioned automatic vehicle roof washing device to wash the vehicle to be washed, including the following steps:

[0054] Step 101. Set the car wash path and car wash station, and move the vehicle to be washed into the preset car wash station along the preset car wash path;

[0055] Step 102. The vehicle to be washed enters the preset car wash station, and the horizontal roller brush is in contact with the top of the vehicle to be washed and brushes the top of the vehicle to be washed.

[0056] Step 103. The vehicle to be washed leaves the car wash station along the preset car wash path, thus completing the automatic cleaning of the vehicle's roof;

[0057] In step 102, the telescopic cylinder has an initial extension amount. The extension amount of the telescopic cylinder is adjusted by the control module so that the outer periphery of the horizontal roller brush fits the top contour of the vehicle to be washed.

[0058] In step 103, when the vehicle to be washed leaves the car wash station and the horizontal roller brush is not in contact with the top of the vehicle, the telescopic cylinder actively extends by a preset buffer extension amount; after the telescopic cylinder extends to the preset buffer extension amount, the extension amount of the telescopic cylinder decreases exponentially to the initial extension amount.

[0059] In actual implementation, the preset car wash path is achieved through a conveyor belt, and the base frame is set on both sides of the conveyor belt;

[0060] In actual implementation, the extension / retraction amount of the telescopic cylinder is defined as L, the conveying speed of the conveyor belt is constant as V, and the initial extension / retraction amount of the telescopic cylinder is L0. When the horizontal roller brush is in contact with the top of the vehicle, the extension / retraction amount of the telescopic cylinder is L1. During the brushing process, the extension / retraction amount L of the telescopic cylinder and the conveying speed V of the conveyor belt satisfy the following relationship: L = L0 + (L1 - L0) × e -βV ;

[0061] Where e is the natural constant; β is the damping coefficient of the telescopic cylinder.

[0062] In actual implementation, L0 is set based on the roofline curve of common car or SUV models, as well as the initial tilt angle X of the roller brush holder and the reference surface. The value range of L0 is 5mm-10mm, the value range of L1 is 180mm-250mm, and the value range of β is 0.1s. -1 -0.3s -1 .

[0063] In actual implementation, the vehicle to be washed drives onto the conveyor belt and is propelled along a preset path into the car wash station. At this point, the horizontal roller brush, in its initial posture (abutting against the front limit block, with an angle of X relative to the ground), quickly comes into contact with the top of the vehicle. The control module monitors the contact status in real time and activates the telescopic cylinder for adjustment. During this process, the damping springs of the buffer mechanism work together to buffer the impact, the counterweight provides a counter-torque to balance the brushing pressure, and the rear limit block constrains the maximum rotation angle of the roller brush frame, ensuring that the horizontal roller brush always fits tightly against the contour of the vehicle roof, completing a comprehensive and even wash as the vehicle moves. If the vehicle stops due to a malfunction of the car wash equipment, resulting in prolonged contact time with the horizontal roller brush, the control module will trigger a protection mechanism, controlling the telescopic cylinder to extend to a preset position and pushing the roller brush frame to rotate to a preset maximum angle. At this point, the roller brush frame abuts against the rear limit block 611, and the rear limit component 611 acts as a limiter, preventing the roller brush frame from continuing to rotate, providing space for the vehicle to avoid a violent collision with the car wash equipment.

[0064] As the vehicle leaves the car wash station normally along the conveyor belt, the pressure exerted by the vehicle's top (the contour of the vehicle's top is typically concave then convex) on the horizontal roller brush gradually disappears. The extension of the telescopic cylinder needs to decrease from L1 to L0. At this time, the control module uses a PLC program to control the air supply to the telescopic cylinder, adjusting the extension to L, so that the extension of the telescopic cylinder follows the formula: L = L0 + (L1 - L0) × e -βV The index gradually and smoothly decreases to the initial extension L0, and in conjunction with the damping spring, it drives the roller brush holder to slowly and smoothly flip back to the initial position. When the roller brush holder flips to the initial angle X, it abuts against the front limit block, completing a precise reset, ready for the next vehicle to be washed.

[0065] In actual implementation, the model employs an exponential decay function to ensure a smooth transition in the telescopic cylinder's extension and retraction, rather than abrupt adjustment. This smooth adjustment avoids the impact load caused by the rapid start and stop of the telescopic cylinder piston rod, reducing wear on cylinder seals and the piston rod. Simultaneously, it works synergistically with the dual-buffer design of the buffer mechanism (damping springs and telescopic cylinder) to further absorb the impact force during adjustment, reducing stress fluctuations on mechanical structures such as the roller brush holder and shaft, extending the overall service life of the equipment, and significantly reducing damage to the vehicle roof from the horizontal roller brush.

[0066] This application provides an automatic vehicle roof washing device, comprising a base frame mounted on a reference surface, a washing station and a roller brush frame mounted on the base frame, a horizontal roller brush rotatably mounted at one end of the roller brush frame, and a buffer mechanism disposed between the roller brush frame and the base frame. When the vehicle to be washed enters the washing station, it comes into contact with the outer periphery of the horizontal roller brush, and the top of the roller brush frame rotates. When the vehicle leaves, the roller brush frame rotates towards the bottom of the base frame, thus washing the vehicle roof. The buffer mechanism effectively reduces the rotational speed of the roller brush frame during its reset. This application avoids vehicle damage caused by excessively rapid reset of the horizontal roller brush by incorporating a buffer mechanism, significantly improving safety and user experience. Simultaneously, the cooperation between the roller brush frame and the buffer mechanism reduces the risk of the vehicle jamming with the horizontal roller brush in case of mechanical failure, preventing vehicle body damage, significantly reducing maintenance costs and downtime. It has the advantages of simple structure, strong adaptability, low implementation cost, and ease of promotion and implementation.

[0067] The embodiments provided by the present invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. An automatic washing device for the roof of a vehicle, characterized in that, The system includes a base frame (1) on a reference surface, a car wash station on the base frame (1), a roller brush frame (2) on the base frame (1), a horizontal roller brush (3) rotatably mounted on one end of the roller brush frame (2), and a buffer mechanism (4) between the roller brush frame (2) and the base frame (1). When a vehicle to be washed enters the car wash station, the vehicle to be washed abuts against the outer periphery of the horizontal roller brush (3), causing the roller brush frame (2) to rotate towards the top of the base frame (1). When the vehicle to be washed leaves the car wash station, the roller brush frame (2) rotates towards the bottom of the base frame (1). The horizontal roller brush (3) is used to brush the top of the vehicle to be washed, and the buffer mechanism (4) is used to reduce the speed of the roller brush frame (2) when it rotates towards the bottom of the base frame (1).

2. The automatic washing device for vehicle roofs according to claim 1, characterized in that, The buffer mechanism (4) includes a coupling (40) provided on the rotating shaft of the roller brush frame (2) and buffer components (41) respectively provided on the front and rear ends of the coupling (40). When the vehicle to be washed leaves the car wash station, the buffer components (41) are used to apply a lifting force to the coupling (40) to reduce the speed of the roller brush frame (2) rotating towards the bottom of the base frame (1).

3. An automatic washing device for vehicle roofs according to claim 2, characterized in that, The buffer assembly (41) includes a damping spring (410) disposed between the rear end of the coupling (40) and the base frame (1), and a telescopic cylinder (411) disposed between the front end of the coupling (40) and the base frame (1). The movable end of the damping spring (410) is disposed at the rear end of the coupling (40), and the fixed end of the damping spring (410) is disposed on the base frame (1). The output end of the telescopic cylinder (411) is disposed at the front end of the coupling (40), and the fixed end of the telescopic cylinder (411) is disposed on the base frame (1).

4. An automatic washing device for vehicle roofs according to claim 2, characterized in that, It also includes a counterweight (5) on the other end of the roller brush frame (2). The weight of the horizontal roller brush (3) is greater than the weight of the counterweight (5). In the initial state, the horizontal roller brush (3) is located at the bottom of the car wash station. The horizontal roller brush (3) is located on the side close to the entrance of the car wash station, and the counterweight (5) is located on the side away from the entrance of the car wash station.

5. An automatic washing device for vehicle roofs according to claim 1, characterized in that, It also includes limiting mechanisms (6) located on both sides of the car wash station on the base frame (1). When the roller brush frame (2) rotates relative to the base frame (1), the limiting mechanisms (6) are used to limit the rotation angle of the roller brush frame (2) relative to the base frame (1).

6. An automatic washing device for vehicle roofs according to claim 5, characterized in that, The limiting mechanism (6) includes a front limiting component (60) located at the front end of the car wash station. The front limiting component (60) includes a front limiting seat (600) located on the base frame (1) and a front limiting block (601) located on the front limiting seat (600). In the initial state, the roller brush frame (2) abuts against the front limiting block (601) to limit the initial angle between the roller brush frame (2) and the reference surface.

7. An automatic washing device for vehicle roofs according to claim 6, characterized in that, In the initial state, the included angle between the roller brush holder (2) and the reference plane is defined as X, and X satisfies the following relationship: 30°≤X≤45°.

8. An automatic washing device for vehicle roofs according to claim 5, characterized in that, The limiting mechanism (6) includes a rear limiting component (61) located at the rear end of the car wash station. The rear limiting component (61) includes a rear limiting seat (610) located on the base frame (1) and a rear limiting block (611) located on the rear limiting seat (610). When the vehicle to be washed enters the car wash station and drives the roller brush frame (2) to rotate towards the top of the car wash station, the roller brush frame (2) can abut against the rear limiting block (611) to limit the rotation angle of the roller brush frame (2).

9. An automatic washing device for vehicle roofs according to claim 1, characterized in that, It also includes bearing seats (7) on both sides of the base frame (1), and the rotating shafts on both sides of the roller brush frame (2) are matched and disposed in the bearing seats (7).

10. A method for automatically washing the roof of a vehicle, comprising using an automatic washing device for the roof of a vehicle as described in any one of claims 1-9 to wash the vehicle to be washed, characterized in that, Includes the following steps: Step 101. Set the car wash path and car wash station, and move the vehicle to be washed into the preset car wash station along the preset car wash path; Step 102. The vehicle to be washed enters the preset car wash station, and the horizontal roller brush is in contact with the top of the vehicle to be washed and brushes the top of the vehicle to be washed. Step 103. The vehicle to be washed leaves the car wash station along the preset car wash path, thus completing the automatic cleaning of the vehicle's roof; In step 102, the telescopic cylinder has an initial extension amount. The extension amount of the telescopic cylinder is adjusted by the control module so that the outer periphery of the horizontal roller brush fits the top contour of the vehicle to be washed. In step 103, when the vehicle to be washed leaves the car wash station and the horizontal roller brush is not in contact with the top of the vehicle, the telescopic cylinder actively extends by a preset buffer extension amount; after the telescopic cylinder extends to the preset buffer extension amount, the extension amount of the telescopic cylinder decreases exponentially to the initial extension amount.

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