A linkage type body side brush device for car washing

Abstract

The present invention discloses a linkage-type vehicle body side brush device for car washing, which belongs to the field of vehicle washing technology. It comprises a frame, a driving device, a linkage mechanism, and a plurality of side brush devices; the driving device is mounted on the frame, the linkage mechanism is mounted on the frame, the linkage mechanism comprises an input end and a plurality of output ends, the output end of the driving device is connected to the input end of the linkage mechanism; a plurality of side brush devices are mounted on the frame, the input end of each side brush device is connected to the output end of the linkage mechanism; the driving device drives the linkage mechanism, and the output end of the linkage mechanism drives the side brush device. The present invention solves the technical problems of low reliability, high manufacturing cost, and high electricity cost of car washing caused by the inability of the side brushes of existing car washing devices to achieve linkage.

Description

Technical Field

[0001] The present invention relates to the technical field of car washing, in particular to a linked car body side brush device for car washing. Background Art

[0002] With socioeconomic development, improved living standards, and a faster pace of life, cars have become an indispensable means of transportation. More and more people own their own cars, driving the rapid development of the car wash industry. However, due to rising labor costs in my country in recent years, manual car washing is not only inefficient but also increasingly expensive, creating an urgent need for efficient and fast car washes. Existing car washes typically include multiple side brushes to clean the sides of a vehicle. However, each side brush in existing car washes is equipped with a drive motor, each controlled individually. This results in a high number of electronic components in the system, increasing the risk of component damage and reducing reliability. Furthermore, inexpensive drive motors are prone to damage, while high-quality drive motors are expensive. Using multiple drive motors makes it difficult to balance quality and production costs. Furthermore, a single motor driving a single side brush often consumes excessive power, resulting in high vehicle cost and high electricity costs. Summary of the Invention

[0003] The purpose of the present invention is to provide a linkage type vehicle body side brush device for car washing in order to solve the technical problems of low reliability, high cost and high electricity cost of car washing caused by the inability of the side brushes of existing car washing devices to achieve linkage.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a linkage type body side brush device for car washing, comprising a frame, a driving device, a linkage mechanism and a plurality of side brush devices; the driving device is mounted on the frame, the linkage mechanism is mounted on the frame, the linkage mechanism comprises an input end and a plurality of output ends, the output end of the driving device is connected to the input end of the linkage device; the plurality of side brush devices are respectively mounted on the frame, the input end of each side brush device is connected to the output end of the linkage mechanism; the driving device drives the linkage mechanism, and the output end of the linkage mechanism drives the side brush device.

[0005] Furthermore, the transmission structure of the driving device and the linkage mechanism is any one of chain transmission, belt transmission or gear transmission.

[0006] Furthermore, the side brush devices include a skirt brush device, a front upright brush device and a rear upright brush device. The front upright brush device and the rear upright brush device are respectively installed at the front and rear of the frame, and the skirt brush device is located between the front upright brush device and the rear upright brush device.

[0007] Furthermore, the linkage mechanism includes a first linkage shaft and a second linkage shaft parallel to each other, one end of the first linkage shaft is fixedly connected to the input end of the front vertical brush, and the other end is fixedly connected to the input end of the rear vertical brush; the second linkage shaft is rotatably mounted on the frame, one end of the second linkage shaft is fixedly connected to the input end of the skirt brush, and the other end of the second linkage shaft is connected to the first linkage shaft through a belt drive.

[0008] Furthermore, the skirt brush device includes a first swing arm, a first brush body, a first right-angle commutator and a first gravity device; a vertical rotating shaft rotatably connected to the frame is provided on the frame, one end of the first swing arm is rotatably connected to the first rotating shaft, the other end of the first swing arm extends horizontally, the first brush body is vertically arranged, a cleaning brush is provided on the outer peripheral wall of the first brush body, and the vertical end of the first brush body is rotatably connected to the extended end of the first swing arm; the input end of the first right-angle commutator is fixedly connected to one end of the second linkage shaft, and the output end of the first right-angle commutator drives the first brush body to rotate; a first traction rope is provided on the first gravity device, the other end of the first traction rope is fixedly connected to the middle part of the first swing arm, the middle part of the first traction rope is movably hung on the frame, and the first gravity device pulls the first swing arm to rotate in one direction.

[0009] Furthermore, the front vertical brush device includes a second swing arm, a second brush body, a second right-angle commutator and a second gravity device; a vertical shaft is provided on the frame body with a rotating shaft rotatably connected to the frame body, one end of the second swing arm is rotatably connected to the second rotating shaft, the other end of the second swing arm extends horizontally, the second brush body is vertically arranged, a cleaning brush is provided on the outer peripheral wall of the second brush body, and the vertical end of the second brush body is rotatably connected to the extended end of the second swing arm; the input end of the second right-angle commutator is fixedly connected to one end of the first linkage shaft, and the output end of the second right-angle commutator drives the second brush body to rotate; a second traction rope is provided on the second gravity device, the other end of the second traction rope is fixedly connected to the middle part of the second swing arm, the middle part of the second traction rope is movably hung on the frame body, and the second gravity device pulls the second swing arm to rotate in one direction.

[0010] Furthermore, the front vertical brush device and the rear vertical brush device have the same structure and are symmetrically arranged.

[0011] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0012] 1. The present invention is provided with a linkage mechanism, a driving device and a linkage mechanism, and the linkage mechanism drives multiple side brush devices at the same time. Through the multiple side brush devices, the front end, the rear end and one side of the vehicle can be washed, thereby achieving the purpose of a single driving device driving multiple side brush devices; based on the above, by using a single driving device to drive multiple side brush devices, the use of electronic components of the present invention can be greatly reduced, and the damage of electronic parts can be reduced; at the same time, the present invention can improve the utilization rate of the driving device, reduce the problem of excess power of the driving device, and save electricity costs during the car washing process; therefore, the present invention solves the technical problems of low reliability, high cost and high electricity cost of car washing caused by the inability of the side brushes of the existing car washing device to achieve linkage.

[0013] 2. The skirt brush device, front vertical brush device and rear vertical brush device of the present invention are all installed in the frame. The working principle of the skirt brush device is as follows: when washing a car, the frame and the car body have a relative displacement in the front-to-back direction; the first swing arm can rotate around its rotation connection with the frame, and the first brush body is driven to rotate through the first direct steering gear. The first gravity device pulls the swing wall, so that the brush body has a movement tendency close to the car body; when the first brush body contacts the car body, there is an interaction force between the car body and the first brush body. The torque generated by this force on the first swing arm is balanced with the torque generated by the first gravity device on the first swing wall. Since the torque of the first gravity device on the first swing arm changes less, the interaction force between the car body and the first brush body can also be relatively constant, and the first brush body is not likely to cause damage to the car body; the working principles of the front vertical brush device and the rear vertical brush device are the same as those of the skirt brush device, and will not be repeated here. Based on the above, the side brush device of the present invention has high reliability and is not likely to cause damage to the car body.

[0014] 3. The present invention, by providing a skirt brush assembly, a front upright brush assembly, and a rear upright brush assembly, can achieve precise cleaning of various parts of the vehicle body. This allows the brush assembly of the present invention to use a smaller diameter cleaning brush, making it easier to power the car wash machine with 220V mains electricity. Furthermore, each brush assembly of the present invention can be driven by a relatively low-power drive motor, resulting in a relatively low power consumption. Furthermore, by providing a front upright brush assembly and a rear upright brush assembly to clean both the front and rear sides of the vehicle body, the travel distance of the frame can be reduced, thereby reducing the overall length of the present invention and the land area occupied by the car wash apparatus. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 It is a structural diagram of the frame installation of the present invention.

[0017] Figure 3 This is another installation structure diagram of the frame of the present invention.

[0018] Figure 4It is a three-dimensional structural diagram of the skirt brush device of the present invention.

[0019] Figure 5 It is a three-dimensional diagram of the local structure of the skirt brush device of the present invention.

[0020] Figure 6 It is a three-dimensional structural diagram of the front vertical brush device of the present invention.

[0021] Figure 7 It is a three-dimensional diagram of the partial structure of the front vertical brush device of the present invention.

[0022] In the accompanying drawings, a1-frame, a2-driving device, a3-linking mechanism, a4-skirt brush device, a5-front vertical brush device, a6-rear vertical brush device, a31-first linkage shaft, a32-second linkage shaft;

[0023] d2-first swing arm, d3-second brush body, d4-transmission device, d5-first gravity device, d6-second elastic member, d11-first rotating shaft, d12-first support rod, d13-first fixed pulley, d14-first limiting rod, d21-first limiting column, d31-first cleaning brush, d41-first right-angle commutator, d42-first transmission element, d43-first synchronous wheel, d44-second synchronous wheel, d45-first synchronous belt, d46-first reversing gear, d47-second reversing gear, d51-first traction rope, d52-first telescopic rod, d53-first supporting plate, d54-first bracket;

[0024] e2-second swing arm, e3-second brush body, e4-transmission device, e5-second gravity device, e6-second elastic member, e11-second rotating shaft, e12-second support rod, e13-second fixed pulley, e14-second limiting rod, e21-second limiting column, e31-second cleaning brush, e41-first right-angle commutator, e42-first transmission element, e43-third synchronous wheel, e44-fourth synchronous wheel, e45-second synchronous belt, e46-third reversing gear, e47-fourth reversing gear, e51-second traction rope, e52-second telescopic rod, e53-second support plate, e54-second bracket. DETAILED DESCRIPTION

[0025] The specific implementation of the invention is further described below with reference to the accompanying drawings.

[0026] See Figures 1 to 3A linkage type vehicle body side brush device for car washing comprises a frame a1, a driving device a2, a linkage mechanism a3 and a plurality of side brush devices; the driving device a2 is mounted on the frame a1, the linkage mechanism a3 is mounted on the frame a1, the linkage mechanism a3 comprises an input end and a plurality of output ends, the output end of the driving device a2 is connected to the input end of the linkage device; the plurality of side brush devices are respectively mounted on the frame a1, the input end of each side brush device is connected to the output end of the linkage mechanism a3; the driving device a2 drives the linkage mechanism a3, and the output end of the linkage mechanism a3 drives the side brush devices.

[0027] For details, please refer to Figures 1 to 3 The side brush devices include a skirt brush device a4, a front vertical brush device a5, and a rear vertical brush device a6. The front vertical brush device a5 and the rear vertical brush device a6 are respectively mounted at the front and rear of the frame a1, with the skirt brush device a4 located between the front vertical brush device a5 and the rear vertical brush device a6. The linkage mechanism a3 includes a first linkage shaft a31 and a second linkage shaft a32, which are parallel to each other. One end of the first linkage shaft a31 is fixedly connected to the input end of the front vertical brush, and the other end is fixedly connected to the input end of the rear vertical brush. The second linkage shaft a32 is rotatably mounted on the frame a1. One end of the second linkage shaft a32 is fixedly connected to the input end of the skirt brush, and the other end of the second linkage shaft a32 is connected to the first linkage shaft a31 via a belt drive. The transmission structure of the drive device a2 and the linkage mechanism a3 can be any one of a chain drive, a belt drive, or a gear drive. In this embodiment, the transmission structure of the drive device a2 and the linkage mechanism a3 is a chain drive. It is understood that a belt drive or a gear drive can be selected according to needs.

[0028] See Figure 4 and Figure 5The skirt brush device a4 includes a first swing arm d2, a first brush body d3, a first transmission device d4, a first gravity device d5 and a first elastic member d6; a first rotating shaft d11 is vertically provided on the frame body a1 and is rotatably connected to the frame body a1, and a first support rod d12 is provided at the lower part of the frame body a1 and is inclined to one side. A first fixed pulley d13 is provided on the upper part of the first support rod d12; one end of the first swing arm d2 is rotatably connected to the first rotating shaft d11, and the other end of the first swing arm d2 extends horizontally, and the first brush body d3 is vertically arranged, and the outer peripheral wall of the first brush body d3 is a first flexible cleaning strip d31, and one vertical end of the first brush body d3 is rotatably connected to the protruding end of the first swing arm d2; a first traction rope d51 is provided on the first gravity device d5, and the other end of the first traction rope d51 is fixedly connected to the middle part of the first swing arm d2, and the first traction rope d51 is hung around the first fixed pulley d13, and the first gravity device d5 pulls the first swing arm d2 to rotate in one direction. One end of the first elastic member d6 is connected to the first swing arm d2, and the other end is connected to the frame a1. The first elastic member d6 pulls the first swing arm d2 in a direction opposite to the pulling direction of the first gravity device d5. It is understood that the first elastic member d6 can also be a spring or a rubber band. In this embodiment, the first elastic member d6 is a tension spring; one end of the tension spring is connected to the upper portion of the first support rod d12, and the other end is connected to a side of the first swing arm d2. The first rotating shaft d11 is located between the connection between the first swing arm d2 and the tension spring and the connection between the first swing arm d2 and the first traction rope d51. The first gravity device d5 also includes a first telescopic rod d52, which is arranged along the length of the first support rod d12. The lower end of the first telescopic rod d52 is fixedly connected to the lower portion of the first support rod d12. A first support plate d53 is provided on the telescopic end of the first telescopic rod d52, which slides along the length of the first support rod d12 and is provided with a first bracket d54 for receiving the first gravity device d5. The first transmission device d4 includes a first right-angle converter d41 and a first transmission element d42. The first right-angle converter d41 is mounted on the frame a1. The input end of the first right-angle converter d41 is connected to one end of the second linkage shaft a32, and the output shaft of the first right-angle converter d41 is coaxially fixedly connected to the first rotating shaft d11. The first rotating shaft d11 drives the input end of the first transmission element d42, and the output end of the first transmission element d42 drives the brush body d3 to rotate.Specifically, the first transmission element d42 includes a first synchronous wheel d43, a second synchronous wheel d44, a first synchronous belt d45, a first reversing gear d46 and a second reversing gear d47. The first synchronous wheel d43 is coaxially fixedly mounted on the first rotating shaft d11. The second synchronous wheel d44 and the first reversing gear d46 are coaxially fixedly connected through a cylindrical shaft. The cylindrical shaft is rotatably mounted on the protruding end of the first swing arm d2. The first synchronous belt d45 is wound around the first synchronous wheel d43 and the second synchronous wheel d44; the second reversing gear d47 is coaxially fixedly mounted on the central axis of the first brush body d3, and the first reversing gear d46 and the second reversing gear d47 are engaged with each other.

[0029] The first telescopic rod d52 is a pneumatic telescopic rod connected to an air compressor with adjustable pressure. A first limiting post d21 is also provided on the upper end surface of the first swing arm d2, and a first limiting rod d14 is provided on the frame a1. When the first gravity device d5 is pulled to the appropriate position, the first limiting post d21 and the first limiting rod d14 abut against each other. The skirt brush device a4 operates as follows: The first swing arm d2 rotates about its pivoting connection with the frame a1, driving the first brush body d3 to rotate via the first transmission device d4. The first gravity device d5 pulls on the first swing arm d2, causing the first brush body d3 to move closer to the vehicle body. When the first brush body d3 contacts the vehicle body, an interaction force forms between the vehicle body and the first brush body d3. This interaction force exerts a torque on the first swing arm d2 that balances the torque exerted on the swing arm by the first gravity device d5. Because the torque exerted by the first gravity device d5 on the first swing arm d2 varies minimally, the interaction force between the vehicle body and the first brush body d3 remains relatively constant, making it less likely for the first brush body d3 to damage the vehicle body. When the first brush body d3 contacts the vehicle body through the belt drive, excessive interaction force between the vehicle body and the brush body d3, such as if the first flexible cleaning strip 31 becomes stuck in a seam, can hinder the rotation of the first brush body d3, causing its rotational speed to decrease. At this time, there is a speed difference between the first synchronous pulley d43 and the second synchronous pulley d44, which causes one side of the first synchronous belt d45 to tighten and the other side to loosen. At the same time, the tightened side exerts a pulling force on the first swing arm d2. When the torque generated by this pulling force is greater than the torque exerted by the gravity device on the first swing arm d2, the first brush body d3 moves away from the vehicle body. In other words, when the first brush body d3 is subjected to excessive force, it will actively move away from the vehicle body to prevent the brush body from causing damage to the vehicle body. By providing a first telescopic rod d52 and setting the thrust of the first telescopic rod d52, the pulling force of the first gravity device d5 on the second swing arm d2 is adjusted, thereby adjusting the cleaning force of the first brush body d3 on the vehicle body. By providing the first elastic member d6, when the first telescopic rod d52 completely lifts the first gravity device d5, the pulling force of the first gravity device d5 on the first swing arm d2 disappears, and the first elastic member d6 drives the protruding end of the first swing arm d2 to rotate and approach the frame a1, so that the first brush body d3 is retracted, and the first brush body d3 has an automatic retraction function.

[0030] See Figure 6 and Figure 7The front vertical brush device a5 includes a second swing arm e2, a second brush body e3, a second transmission device e4, a second gravity device e5 and a second elastic member e6; a second rotating shaft e11 is vertically provided on the frame body a1 and is rotatably connected to the frame body a1, and a second support rod e12 is provided at the lower part of the frame body a1 and is inclined to one side. A second fixed pulley e13 is provided on the upper part of the second support rod e12; one end of the second swing arm e2 is rotatably connected to the second rotating shaft e11, and the other end of the second swing arm e2 extends horizontally, and the second brush body e3 is vertically arranged, and the outer peripheral wall of the second brush body e3 is a second flexible cleaning strip e31. One vertical end of the second brush body e3 is rotatably connected to the protruding end of the second swing arm e2; a second traction rope e51 is provided on the second gravity device e5, and the other end of the second traction rope e51 is fixedly connected to the middle part of the second swing arm e2. The second traction rope e51 is hung around the second fixed pulley e13, and the second gravity device e5 pulls the second swing arm e2 to rotate in one direction. One end of the second elastic member e6 is connected to the second swing arm e2, and the other end is connected to the frame a1. The second elastic member e6 pulls the second swing arm e2 in a direction opposite to the pulling direction of the second gravity device e5. It is understood that the second elastic member e6 can also be a spring or a rubber band. In this embodiment, the second elastic member e6 is a tension spring; one end of the tension spring is connected to the upper portion of the second support rod e12, and the other end is connected to a side of the second swing arm e2. The second rotating shaft e11 is located between the connection between the second swing arm e2 and the tension spring and the connection between the second swing arm e2 and the second traction rope e51. The second gravity device e5 also includes a second telescopic rod e52, which is arranged along the length of the second support rod e12. The lower end of the second telescopic rod e52 is fixedly connected to the lower portion of the second support rod e12. A second support plate e53 is provided on the telescopic end of the second telescopic rod e52, which slides along the length of the second support rod e12. The second support plate e53 is provided with a second bracket e54 for receiving the second gravity device e5. The second transmission device e4 includes a second right-angle converter e41 and a second transmission element e42. The second right-angle converter e41 is mounted on the frame a1. The input end of the second right-angle converter e41 is connected to one end of the second linkage shaft a32, and the output shaft of the second right-angle converter e41 is coaxially fixedly connected to the second rotating shaft e11. The second rotating shaft e11 drives the input end of the second transmission element e42, and the output end of the second transmission element e42 drives the brush body e3 to rotate.Specifically, the second transmission element e42 includes a third synchronous gear e43, a fourth synchronous gear e44, a second synchronous belt e45, a third reversing gear e46, and a fourth reversing gear e47. The third synchronous gear e43 is coaxially fixedly mounted on the second rotating shaft e11. The fourth synchronous gear e44 and the third reversing gear e46 are coaxially fixedly connected via a cylindrical shaft rotatably mounted on the protruding end of the second swing arm e2. The second synchronous belt e45 is wound around the third and fourth synchronous gears e43 and e44. The fourth reversing gear e47 is coaxially fixedly mounted on the central axis of the second brush body e3. The third and fourth reversing gears e46 and e47 mesh with each other. The second telescopic rod e52 is a pneumatic telescopic rod connected to an air compressor with adjustable pressure. A second limiting column e21 is further provided on the lower end surface of the second swing arm e2, and a second limiting rod e14 is provided on the frame a1. When the second gravity device e5 is pulled to a suitable position, the second limiting column e21 abuts against the second limiting rod e14.

[0031] In this embodiment, the front brush assembly a5 and the rear brush assembly a6 have identical structures and are symmetrically arranged. The front brush assembly a5 and the skirt brush assembly a4 operate on the same principle and will not be further described here. It should be noted that the first right-angle commutator d41 and the second right-angle commutator e41 in this embodiment are both conventional and are used for 90-degree commutation of the drive shaft.

[0032] The above description is a detailed description of the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. Any equivalent changes or modifications completed under the technical spirit suggested by the present invention should fall within the patent scope covered by the present invention.

Claims

1. A linked body side brush device for car washing, characterized in that: It includes a frame, a driving device, a linkage mechanism and a plurality of side brush devices; the driving device is mounted on the frame, the linkage mechanism is mounted on the frame, the linkage mechanism includes an input end and a plurality of output ends, the output end of the driving device is connected to the input end of the linkage mechanism; the plurality of side brush devices are respectively mounted on the frame, the input end of each side brush device is connected to the output end of the linkage mechanism; the driving device drives the linkage mechanism, and the output end of the linkage mechanism drives the side brush devices; The transmission structure of the driving device and the linkage mechanism is any one of chain drive, belt drive or gear drive; The side brush devices include a skirt brush device, a front upright brush device and a rear upright brush device, the front upright brush device and the rear upright brush device are respectively installed at the front and rear of the frame, and the skirt brush device is located between the front upright brush device and the rear upright brush device; The linkage mechanism includes a first linkage shaft and a second linkage shaft parallel to each other, one end of the first linkage shaft is fixedly connected to the input end of the front vertical brush, and the other end is fixedly connected to the input end of the rear vertical brush; the second linkage shaft is rotatably mounted on the frame, one end of the second linkage shaft is fixedly connected to the input end of the skirt brush, and the other end of the second linkage shaft is connected to the first linkage shaft through a belt drive; The skirt brush device includes a first swing arm, a first brush body, a first right-angle commutator and a first gravity device; a first rotating shaft rotatably connected to the frame body is vertically provided on the frame body, one end of the first swing arm is rotatably connected to the first rotating shaft, and the other end of the first swing arm extends horizontally, and the first brush body is vertically arranged, and a cleaning brush is provided on the peripheral wall of the first brush body, and one vertical end of the first brush body is rotatably connected to the extended end of the first swing arm; the input end of the first right-angle commutator is fixedly connected to one end of the second linkage shaft, and the output end of the first right-angle commutator drives the first brush body to rotate; a first traction rope is provided on the first gravity device, the other end of the first traction rope is fixedly connected to the middle of the first swing arm, the middle of the first traction rope is movably hung on the frame body, and the first gravity device pulls the first swing arm to rotate in one direction; The first transmission device includes a first right-angle converter and a first transmission element. The first right-angle converter is installed on the frame. The input end of the first right-angle converter is connected to one end of the second linkage shaft, and the output shaft of the first right-angle converter is coaxially fixedly connected to the first rotating shaft; the first rotating shaft drives the input end of the first transmission element, and the output end of the first transmission element drives the brush body to rotate; the first transmission element includes a first synchronous wheel, a second synchronous wheel, a first synchronous belt, a first reversing gear and a second reversing gear. The first synchronous wheel is coaxially fixedly installed on the first rotating shaft, and the second synchronous wheel and the first reversing gear are coaxially fixedly connected through a cylindrical shaft. The cylindrical shaft is rotatably installed on the protruding end of the first swing arm, and the first synchronous belt is wound around the first synchronous wheel and the second synchronous wheel; the second reversing gear is coaxially fixedly installed on the central axis of the first brush body, and the first reversing gear and the second reversing gear are engaged with each other.

2. A linked body side brush device for car washing according to claim 1, characterized in that: The front vertical brush device body includes a second swing arm, a second brush body, a second right-angle commutator and a second gravity device; a second rotating shaft rotatably connected to the frame body is vertically arranged on the frame body, one end of the second swing arm is rotatably connected to the second rotating shaft, the other end of the second swing arm extends horizontally, the second brush body is vertically arranged, and a cleaning brush is provided on the outer peripheral wall of the second brush body, and one vertical end of the second brush body is rotatably connected to the extended end of the second swing arm; the input end of the second right-angle commutator is fixedly connected to one end of the first linkage shaft, and the output end of the second right-angle commutator drives the second brush body to rotate; a second traction rope is provided on the second gravity device, the other end of the second traction rope is fixedly connected to the middle part of the second swing arm, the middle part of the second traction rope is movably hung on the frame body, and the second gravity device pulls the second swing arm to rotate in one direction.

3. The linked body side brush device for car washing according to claim 1, characterized in that: The front vertical brush device and the rear vertical brush device have the same structure and are symmetrically arranged.

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