JP5563941B2 - Wheelchair tire cleaning equipment - Google Patents

Description

  The present invention relates to a wheelchair tire cleaning apparatus, and relates to the above-described apparatus characterized by the structure of a rotating brush and the structure of a fixed brush arranged in parallel therewith.

  2. Description of the Related Art As a wheelchair tire cleaning device, a device for cleaning a wheelchair wheel by rubbing with a rotating brush rotating around an axis parallel to the axis of the wheel is known. The rotating brush is provided at a position corresponding to the wheel on both sides (left and right) of the wheelchair, and has a structure for simultaneously washing the tires on the wheels on both sides.

  In the tire cleaning device having such a structure, the tire side face cannot be sufficiently cleaned in a structure using a brush in which the bristles of the rotating brush are provided only in the radial direction orthogonal to the rotation axis. In order to be able to clean the side surface of the tire, it is necessary to provide bristles in a direction perpendicular to the tire side surface on the rotating brush, that is, bristles planted in a direction substantially parallel to the rotation axis of the rotating brush. .

  Further, in order to clean the entire circumference of the wheel, the rotating brush must be relatively moved along the outer circumference of the wheel. This relative movement is usually performed by rotating a wheel with respect to a rotating brush rotating at a fixed position. There is a structure in which the wheel is rotated by a driving device provided separately from the rotating brush, but a structure in which the wheel is rotated by the rubbing force of the rotating brush while the wheel side is in a freely rotating state has been proposed. The tire cleaning device having this structure cleans the tire by rubbing the tire in the circumferential direction of the wheel with a rotating brush and rotates the wheel with the rubbing force. According to such a structure, a device for rotating the wheel becomes unnecessary, and the device structure can be simplified.

JP 2007-82883 A JP 2008-80849 A JP 2009-172289 A JP 2010-57625 A

  The wheel supported in a freely rotating state by the rubbing force of the rotating brush is rotated so that the entire circumference of the wheel is rubbed with the brush, and the hair and the side surface of the tire that rub the ground contact surface of the tire on the rotating brush are attached. Although the structure provided with the rubbing hair is considered to be a very rational structure, there are actually the following problems.

  Usually, the diameter of the rotating brush is smaller than the diameter of the wheel to be cleaned. Since the diameter of the rotating brush rotates around the drive shaft at the same rotational speed (number of rotations), the hair that rubs the tire side surface on the outer diameter side of the brush is more than the hair that rubs the tire contact surface on the inner diameter side. The speed in the tangential direction (hereinafter referred to as “tangential speed”) increases. Since the tangential speed is proportional to the radius of the rotating brush, the tangential speed is as shown by symbol a in FIG.

  On the other hand, the peripheral speed of the wheel rotated by the rubbing force of the rotating brush is always slower than the tangential speed of the rotating brush. Since the peripheral speed of the wheel is also proportional to the radius of the wheel, the peripheral speed of the wheel (the peripheral speed of the wheel) that is rubbed with the rotating brush is as indicated by symbol b in FIG. The difference between the brush tangential speed a and the wheel peripheral speed b is the brush rubbing speed c. As is apparent from this relationship, the speed c at which the rotating brush rubs the tire increases as the tire has a smaller diameter side (closer to the rim).

  On the other hand, in the tire, the ground contact surface is the most dirty, and the side closer to the rim on the tire side surface is less dirty. In addition, the tire has a large thickness on the contact surface side in order to improve durability and puncture resistance. On the other hand, the tire side face is made thinner in order to improve cushioning and light weight, and a relatively soft inner layer is exposed near the rim. In other words, considering the dirt on the tire, the wear of the brush, and the damage of the tire surface due to rubbing with the brush, it is possible to reduce the rubbing speed of the brush on the tire side surface, particularly in the portion near the rim. desirable. However, in the conventional structure, as shown in FIG. 8, the distribution of the rubbing speed c is completely reversed, which shows that it is irrational.

  Wheelchair tire cleaning devices are often installed at wheelchair rental sources or nursing homes that have many wheelchairs. Tire cleaning devices installed in such places are used to clean a large number of wheelchairs, so the cleaning ability is reduced due to brush wear and hair deformation, so the brush must be replaced frequently. Therefore, the labor and cost for this maintenance increase.

  Moreover, when washing many wheelchairs, it is required that the time required for washing is short. Conventional wheelchairs have a problem that dirt entering the tread pattern of the tire is difficult to remove and takes time to clean. In addition to the main wheels, wheelchairs have caster wheels as front wheels. If the caster wheels cannot be cleaned at the same time as the main wheels, it takes time and effort to clean the caster wheels. There are many problems.

  In view of the above problems of the conventional device, this invention is a rotating brush for simultaneously cleaning the ground contact surface and the side surface of a tire, in which a wheel to be cleaned is rotated by the rubbing force of the brush. By obtaining a rotating brush that is rubbed harder toward the ground contact surface side of a tire that has a large amount of dirt and a tough surface, the ground contact portion and the side portion of the tire can be cleaned efficiently and without causing unnecessary damage to the tire. It is an object to obtain a wheelchair tire cleaning device that can be used.

  Furthermore, this invention can wash | clean a caster wheel and a main wheel simultaneously, is excellent in the removal capability of the dirt which entered the tread pattern, and can wash | clean strongly the grounding part and side part of a tire simultaneously. An object is to obtain a wheelchair tire cleaning device.

  The wheelchair tire cleaning device according to the present invention includes a base 1 and left and right rotating bodies 23 and 56 that respectively support the left and right wheels 61 and 62 of the wheelchair carried on the base and transmit rotational force to the wheels. And an electric motor 16 (16b, 16f) that rotationally drives the rotating body. The rotating bodies 23 and 56 are fixedly provided on a sliding shaft 22 that is mounted on the drive shaft 13 (13b, 13f) that is rotationally driven by the electric motor so as to be axially movable and relatively non-rotatable.

  A pair of side brushes 25 for cleaning both side surfaces of the tire 61 of the wheel are mounted on the sliding shaft 22 so as to be relatively rotatable and axially movable with the rotating bodies 23 and 56 interposed therebetween. The pair of side surface brushes 25 are provided with brush hairs 28 extending in the sliding axis direction on the opposing surfaces, and are spring-biased in a direction approaching each other. The brush bristles 28 of the side brush 25 are pressed against the tire side surfaces of the wheels 61 and 62 that are rotated by the frictional driving force of the rotating bodies 23 and 56. The freely rotatable side brush 25 forms rotating brushes 21b and 21f, and rotates at a tangential speed slower than the circumferential speed of the tire 61 by a frictional force acting from the tire 61 to the tire bristles. The side surface of the tire 61 is rubbed.

  The rotating body may be a cylindrical brush 56 having short radial bristles that rub against the ground contact portion of the tire to be cleaned. Moreover, it can also be set as the friction drive cylinder 23 which only transmits rotational force to a wheel. In the latter case, a fixed brush that slides on the ground contact surface of the tire is provided. As this fixed brush, it is preferable to provide a U-shaped brush 50 having bristles. The U-shaped fixed brush 50 has the U-shaped center line (m) in the substantially circumferential direction of the tire 61 to be washed, and the bristles of the U-shaped bottom portion 50a abut against the ground contact portion of the tire 61. The straight portion 50b is spring-biased so that the bristles are in contact with the side surface of the tire.

  Here, the bristles refer to the hairs 53 extending radially from the core wire 52 standing in their respective directions, and even when no centrifugal force due to rotation is applied, the hair tips are in the grooves of the tread pattern of the tire. It means hair that is strong enough to be inserted by its own rigidity.

  The electric motor that drives the rotating bodies 23 and 56 is preferably an electric motor that is driven to rotate in the forward and reverse directions with different rotation durations on the forward rotation side and the reverse rotation side. When the cylindrical brush 56 is used as the rotating body by intermittently rotating in one direction while the wheels driven to rotate by the rotating bodies 23 and 56 reciprocate, the sliding of the cylindrical brush 56 takes advantage of the inertia of the wheels. The rubbing speed can be increased, and the dirt in the tire tread can be cleaned better.

  Instead of the fixed brush 50 described above, a free rotating brush 55 used in combination with the fixed brush 50 may be provided. This free rotating brush is preferably a brush whose central portion in the width direction has a smaller diameter than both ends.

  In the tire cleaning device of the present invention, the wheel 61 to be cleaned rotates by the rotation of the rotating bodies 23 and 56 that support the ground contact surface of the tire. When using a cylindrical brush as a rotating body to clean the tire ground contact surface with the cylindrical brush, there is a speed difference between the tangential speed of the cylindrical brush and the peripheral speed of the tire contact surface, that is, slip. It needs to be generated. This speed difference can be generated by utilizing the rotational inertia of the wheel, that is, by periodically changing the rotational speed of the rotating brush.

  In particular, by rotating the cylindrical brush forward and backward and making the time interval between forward rotation and reverse rotation different, the tire ground contact surface can be reliably rubbed with the cylindrical brush using the rotational inertia of the wheel, and the time The wheels are intermittently driven in the direction of rotation with a longer interval, and the entire circumference of the ground plane can be rubbed efficiently.

  On the other hand, in the structure in which the rotating body is a friction drive cylinder, the tire ground contact surface is cleaned on the fixed brush or the free rotation brush side, so that as little slippage as possible occurs between the friction drive cylinder 23 and the tire. It is desirable to make it. This can be realized by a structure in which the peripheral surface of the friction drive cylinder 23 is roughened, a groove 23a for suppressing slippage is provided, or a high friction body such as rubber is coated on the peripheral surface of the friction drive cylinder. Also in this structure, the structure in which the friction drive cylinder 23 is rotated in the forward and reverse directions is useful for improving the cleaning power on the fixed brush 50 and the free rotating brush 55 side.

  The side brush 25 in the tire cleaning device of the present invention cleans the side surface of the tire by rotating while being dragged by the rotation of the tire. The tangential speed of the side brush 25 is slower than the peripheral speed of the wheel. Since the tangential speed of the brush and the peripheral speed of the wheel are proportional to the distance from the center axis of rotation, in the tire cleaning device of the present invention, the peripheral speed of the tire side is b in FIG. The rubbing speed c, which is the difference between the peripheral speed of the wheel and the tangential speed of the side brush, is large on the tire contact surface side and small on the side close to the rim. This distribution of the rubbing speed c meets the conditions such that the dirt on the tire side surface increases toward the contact surface side, and that the tire is made more rugged toward the contact surface side.

  When cleaning is performed by rotating the rotating body forward and backward, the side brush 25 also rotates forward and backward following the forward and backward rotation of the wheel. However, since the side brush 25 has a smaller diameter and a smaller rotational inertia than the wheel 61, the rotational speed is reduced. The occurrence of slip between the tire and the side brush when the angle changes is much smaller than the slip that occurs between the cylindrical brush and the tire when a cylindrical brush is used as the rotating body.

  According to the present invention, in the tire cleaning device for cleaning the entire circumference of the wheel by rotating the wheel with the frictional force of the brush while cleaning the side surface of the tire with the rotating brush, Tire cleaning that can clean the tire contact surface side, which has a sturdy surface, and can clean properly without damaging the side surface close to the tire rim with less dirt, thin surface and soft surface A device can be obtained.

  In addition, by using a U-shaped fixed brush with bristles, dirt that has entered the tread pattern of the tire can be cleaned in a short time, and this U-shaped brush can be easily replaced, so that the caster wheels can be cleaned. Can be done at the same time. Moreover, by providing the rotating brush for cleaning the tire side surface and the U-shaped brush for simultaneously cleaning the tire ground contact and the side surface, the wheelchair tire can be efficiently cleaned in a short time.

Side view showing the internal structure of the entire device with a wheelchair mounted Plan view of the entire device Enlarged plan view of rotating brush Enlarged side view of fixed brush mounting part Top view of fixed brush Schematic diagram showing the structure of the fixed brush An enlarged plan view showing another structure of the rotating brush Explanatory drawing which shows the rubbing speed of the side brush in a conventional structure Explanatory drawing which shows the rubbing speed of the side brush in the structure of this invention

  Hereinafter, an example of the most preferred embodiment of the wheelchair tire cleaning device of the present invention will be described with reference to the drawings.

  The base 1 of the device is a flat box having a substantially square plane, and the width direction of the wheelchair 60 to be cleaned (hereinafter referred to as the grounding point between the main wheel 61 and the caster wheel 62 of the wheelchair 60 on the upper surface) The rectangular main openings 11b and the left and right front openings 11f, which are long in the width direction), are provided.

  A main drive shaft 13b made of a square bar is provided at a position directly below the left and right main openings 11b. The main drive shaft 13b is rotationally connected to the main motor 16b by a synchronous belt 18. The main motor 16b is driven forward and backward at different time intervals between the forward rotation and the reverse rotation set on the operation panel 31.

  The left and right sliding shafts 22 are mounted on the main drive shaft 13b so as to be movable in the width direction (axial direction of the main drive shaft 13b) and not relatively rotatable. The friction drive cylinder 23 is fixed. The friction drive cylinder 23 includes a plurality of axial non-slip grooves 23a on the peripheral surface. On both sides of the friction drive cylinder 23, a sleeve 24 is inserted so as to be movable in the axial direction, and a spring receiver 29 is fixed to the slide shaft 22 on the outer side. A compression coil spring 26 is interposed between the sleeve 24 and the spring receiver 29. A side brush 25 is supported on the sleeve 24 so as to be freely rotatable and immovable in the axial direction. The side brush 25 is a brush in which bristles 28 in a direction parallel to the sliding shaft 22 are planted on the side surface of the disc 27 and planted on the opposing surfaces of the two discs 27 arranged with the friction drive cylinder 23 interposed therebetween. The bristles 28 face each other so as to sandwich the tire of the wheelchair to be cleaned, and the bristles are pressed against both side surfaces of the tire by the urging force of the compression coil spring 26.

  A rear moving base 72 is provided on the central upper surface in the width direction on the rear side of the base so as to be engaged with a screw rod 71 in the front-rear direction provided on the base 1 to advance and retract in the front-rear direction. The rear moving table 72 includes two guide rods 73 extending in parallel on both sides in the width direction. The left and right brush bases 44 are mounted on the guide rod 73 so as to be slidable in the width direction by inserting the two guide rods 73 into the two through holes 74 provided therein. End members 75 are detachably attached to both ends of the two guide rods 73.

  A U-shaped fixed brush (U-shaped brush) 50 is attached to one of the sides parallel to the guide rod 73 of the brush base 44, and the other is a cylindrical free rotation whose center is slightly smaller in diameter than both ends. A brush 55 is attached.

  The U-shaped brush 50 is mounted so as to be swingable up and down or back and forth around a support pipe 42 in the width direction mounted on one side of the brush base 44. The U-shaped brush 50 is biased forward and upward by the coil spring 45 and the winding spring 46, that is, toward the main wheel 61 supported by the main rotating brush 21b.

  A U-shaped cleaning liquid pipe 48 provided with a cleaning liquid nozzle 47 in the middle is communicated with the support pipe 42. The cleaning liquid pipe 48 is attached to the non-tire side of the U-shaped brush 50. A cleaning liquid is supplied to the cleaning liquid pipe 48 through a pipe (not shown) connected to the support pipe 42.

  As shown in FIG. 6, the U-shaped brush 50 sandwiches the central portion of the bristles 53 cut into a predetermined length between two wires 52 that are folded in half by forming a loop 51a at the bent end. By twisting the two wires together, the bristles 53 are planted in all radial directions of the core wire 52 formed by the two twisted wires, and the core wire 52 is formed into a U-shape. By bending into a shape, a U-shaped brush is obtained. The end opposite to the bent end of the core wire 52 forms a loop 51b by entwining the tips of two wires.

  Two support pieces 54 are inserted through the support pipe 42 so as to be freely rotatable. By fixing the loops 51 a and 51 b formed at both ends of the U-shaped fixed brush to the respective support pieces 54, U The character brush 50 is mounted so as to be swingable around the support pipe 42 with its U-shaped bottom 50a facing upward, and the coil spring 45 is mounted between the support piece 54 and the brush base 44. Yes.

  When the wheelchair is set in a predetermined position, the U-shaped bottom 50a of the fixed brush 50 is pushed in the direction opposite to the biasing direction of the coil spring 45 by the tire of the main wheel of the wheelchair, and the U-shaped bottom 50a The hair on the inner side of the tire abuts against the ground contact portion of the tire, and the hair of the U-shaped parallel straight portion 50b comes into contact with the side portion of the tire. In this state, the brush base 44 slides in the width direction so that the U-shaped center line m of the fixed brush 50 matches the position of the center of the wheelchair tire to be cleaned.

  The U-shaped brush 50 can adjust the distance from the drive shaft 13b according to the diameter of the wheel to be cleaned by rotating the handle 76 attached to the screw rod 71 to move the rear moving table 72 back and forth. Further, when the diameter of the main wheel to be cleaned is very small, or according to the shape of the tire or the like, the ground contact surface of the tire can be cleaned with the free rotating brush 55 instead of the U-shaped brush 50. In this case, the end member is removed from the tip of the guide rod 73, and the brush base 44 is removed from the guide rod 73 and inserted into the guide rod 73 in the opposite direction, whereby the free rotating brush 55 is directed toward the drive shaft 13b. Then, the brush stand 44 is mounted, and the rear moving stand 72 is moved so that the free rotating brush 55 contacts the ground contact surface of the tire to be cleaned.

  At a position below the front opening 11f, a flat movable table 32 that is elongated in the width direction is a front-rear direction (a front-rear direction of a wheelchair to be cleaned. It is guided by the rail 34 of the same, and is provided so that the position can be adjusted. A screw rod 36 in the front-rear direction with a handle 35 fixed to the end is pivotally supported at the center of the base 1, and a nut member provided on the lower surface of the movable table 32 is screwed into the screw rod 36. . By rotating the handle 35, the movable table 32 moves in the front-rear direction.

  The left and right front rotating brushes 21f are mounted on the movable table 32 with the same structure as the main rotating brush described above. In other words, the front rotating brush 21f is relatively rotatable with respect to the sliding shaft 22 through the sliding shaft 22, the friction drive cylinder 23 fixed to the sliding shaft, and the sleeve 24 having the same structure as the main rotating brush 21b. A pair of side brushes 25 movably mounted in the axial direction, a pair of spring receivers 29 fixed to the sliding shaft 22, and a pair of compression coil springs for pressing the hairs of the side brush 25 against both side surfaces of caster wheels 62 of the wheelchair. 26. The sliding shaft 22 is mounted on a front drive shaft 13f made of a square bar that is pivotally supported by the moving base 32 so as to be movable in the axial direction and not to be relatively rotatable. The front drive shaft 13f is a front motor 16f mounted on the moving table 32 via the synchronous belt 18. In the embodiment shown in FIG. 1, the main motor 16b rotates forward and backward during cleaning, whereas the front motor 16f is unidirectional. However, it may be rotated forward and backward in the same manner as the main motor 16b.

  A guide 37 in the width direction is fixed to the moving table 32 in front of the front drive shaft 13 f on the moving table 32, and left and right sliders 39 are provided so as to be movable along the guide 37. A pressing roller 38 is supported on the slider 39 via a bracket so as to be freely rotatable. Further, the front U-shaped brush 50 having the same structure as the U-shaped brush 50 of the main fixed brush is attached to the bracket so as to be swingable about the axis of the pressing roller 38. The pressing roller 38 is a roller having a V groove on the peripheral surface, and the caster wheel is prevented from swinging during cleaning by guiding the outer periphery of the caster wheel with the V groove and the U-shaped brush 50. The pressing roller 38 and the U-shaped brush 50 clean the ground contact surface of the caster wheel 62.

  As shown in FIG. 1, the main rotating brush 21 b supports the main wheel 61 below the caster wheel side of the main wheel 61 of the wheelchair to be cleaned, and the front rotating brush 21 f is below the caster wheel 62. Support. The pressing roller 38 presses the caster wheel 62 to the main wheel 61 side on the opposite main wheel side of the caster wheel 62, and by this pressing force and the weight of the wheelchair, the tire of the main wheel 61 is moved to the main rotating brush 21b and the fixed brush. 50. A winding spring is wound on both sides sandwiching the pressing roller 38 around the support shaft that supports the pressing roller 38, and a U-shaped wire 83 biased by the winding spring is attached to the back surface of the front U-shaped brush 50. Thus, the front U-shaped brush 50 is pressed against the caster wheel 62 side.

  Next, the wheel cleaning operation of the wheelchair in the embodiment apparatus will be described. First, the front / rear position of the moving table 32 is adjusted according to the wheel base of the wheelchair 60 to be cleaned, the main wheel 61 comes into contact with the U-shaped fixed brush 50 and the main rotating brush 21b, and the caster wheel 62 is moved to the front rotating brush 21f. And the pressing roller 38. At this time, the front U-shaped brush 50 is pressed against the opposite main wheel side of the caster wheel 62 by the urging force of the winding spring. The width direction positions of the rotating brushes 21b and 21f and the U-shaped brushes 50 and 50 are automatically positioned according to the tread width of the wheelchair that has been carried in. In this state, the main motor 16b and the front motor 16f are driven to rotate the rotating brushes 21b and 21f. The front motor 16f rotates the caster wheel 62 in the direction indicated by the arrow f in FIG. On the other hand, the main motor 16b is set so as to alternately repeat forward rotation in which the main wheel 61 is rotated in the direction of the arrow b in FIG. 1 and reverse rotation in which the main wheel 61 is rotated in the direction of the arrow c at a shorter distance than the normal rotation. The main wheel 61 is rotated in the direction of arrow b in FIG. 1 while reciprocating. It is preferable to set the main wheel 61 to reciprocate 10 to 50 times during one rotation. During this time, the cleaning liquid is supplied to the cleaning liquid pipe 48 as necessary, and the main wheel 61 is cleaned in the presence of the cleaning liquid. In this state, the front motor 16f and the main motor 16b are rotated for the time set on the operation panel 31, and the tires of the main wheel 61 and the caster wheel 62 of the wheelchair are simultaneously cleaned. When the washing is finished, the wheelchair 60 is carried out from the base 1.

  When the cleaning ability of the U-shaped brushes 50, 50 is reduced due to abrasion of the hair ends, the fixed brushes 50, 50 are mounted upside down. When the back side is also worn, the U-shaped brushes 50 and 50 are replaced. Since the U-shaped brushes 50 and 50 have both ends of their core wires fixed to the support piece 54 with screws or the like, they can be easily removed, and a new U-shaped brush can be easily mounted. The U-shaped brushes 50 and 50 can be used by removing the ends of the core wire of a commercially available turtle scourer (registered trademark), and are provided with bristles so that a fixed brush with high wear cannot be obtained. There is no risk of trouble in the cleaning operation.

DESCRIPTION OF SYMBOLS 1 Base 13 (13b, 13f) Drive shaft 16 (16b, 16f) Electric motor 21b, 21f Rotating brush 22 Slide shaft 23 Friction drive cylinder (rotating body)
25 Side brush 28 Brush hair 50 U-shaped brush (fixed brush)
50a U-shaped bottom portion 50b U-shaped linear portions on both sides 52 Core wire 53 Bristles 55 Freely rotating brush 56 Cylindrical brush (rotating body)
61 Main wheel (wheelchair wheel)
62 Castor wheels (wheelchair wheels)
m U-shaped center line

Claims (5)

The left and right rotating bodies that support the left and right wheels 61 of the wheelchair carried on the base 1 and transmit rotational force to the wheels, and the electric motor 16 that rotationally drives the rotating bodies, the rotating body includes: In the wheelchair tire cleaning device provided fixed to the sliding shaft 22 mounted on the drive shaft 13 which is rotationally driven by the electric motor so as to be axially movable and not relatively rotatable,
Each of the pair of side brushes includes a pair of side brushes 25 that are mounted on the sliding shaft so as to be relatively rotatable and axially movable to clean both side surfaces of the tire of the wheel. A wheelchair tire cleaning apparatus comprising brush hairs extending in a sliding axis direction on the opposite surface and spring-biased in a direction approaching each other.   The tire cleaning device according to claim 1, wherein the rotating body is a cylindrical brush 56 that rubs against a ground contact portion of the tire. The rotating body is a friction drive cylinder 23, and U-shaped fixed brushes having bristles facing the tire side of the wheel are provided on the left and right sides, and the fixed brush has a center line m of the U-shape substantially around the tire. The bristles of the U-shaped bottom portion 50a are in contact with the ground contact portion of the tire in the direction, and the bristles of the straight portions 50b on both sides of the U-shape are spring-biased so as to contact the side surfaces of the tire
The wheel rotates intermittently in one direction while reciprocating between the forward rotation and the reverse rotation of the electric motor on the forward rotation side and the reverse rotation side, thereby cleaning the ground contact portion and the side portion of the entire circumference of the tire. The tire cleaning device according to claim 1, wherein:   The left and right fixed brushes are mounted on a brush base 44 capable of converting a relative posture with respect to the tire into a first posture and a second posture, a free rotating brush 55 is mounted on the brush base, and the brush base is attached to the first brush base. The tire cleaning device according to claim 3, wherein the fixed brush is pressed against the tire when in a posture, and the free rotating brush is pressed against the tire when in a second posture.   The tire cleaning device according to claim 3, comprising the left and right fixed brushes and a free rotating brush, wherein the fixed brush and the free rotating brush are pressed against the tire simultaneously.

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