JPH0243663B2 - SENSHAKI - Google Patents

Description

[Detailed Description of the Invention] A. Object of the Invention (1) Industrial Application Field The present invention relates to a car wash machine, particularly a frame, and a swinging arm whose intermediate portion is supported by the frame so as to be swingable around a horizontal axis. a top rotating brush that is rotatably supported on one end of the swinging arm and capable of brushing the top surface of the vehicle; and a heavy object that is fixed to the other end of the swinging arm and functions as a bounce weight; The present invention relates to a car washer of a type in which brushing can be performed using an upper rotating brush while moving a vehicle and a vehicle relative to each other in the longitudinal direction of the vehicle.

(2) Conventional technology Conventionally, in such car wash machines, the difference between the moment of the top rotating brush around the swing axis of the swinging arm and the moment of the heavy object causes the top rotating brush to contact the top surface of the vehicle. I'm trying to get surface pressure.

However, the height of the bonnet surface, ceiling surface, and trunk surface of a passenger car may differ, so when brushing the vehicle top surface (hereinafter referred to as the "low surface") that is lower than a predetermined height, for example, the bonnet surface, it is necessary to A vehicle top surface (hereinafter referred to as a high surface) where the tilt angle of the movable arm is relatively small and which is higher than a predetermined height;
For example, when brushing the top seal surface, the inclination angle of the swinging arm increases. For this reason, if the contact surface pressure of the upper surface rotating brush is set appropriately for the low surface, the contact surface pressure for the high surface will become too large, and conversely, if the contact surface pressure for the high surface is set appropriately,
The contact surface pressure becomes too small on the lower surface. In this way, the contact surface pressure of the upper rotating brush is uneven between the lower and higher surfaces of the vehicle, so if the relative speed of movement between the frame and the vehicle is kept constant as in the conventional cleaning process, In this case, the brushing effect will be inferior to that of a high-level surface. That is, the lower surface had a lower cleaning effect than the higher surface, the cleaning effect during cleaning, the polishing effect during wax application, and the scale removal effect during scale removal, resulting in an uneven finish on the treated surface.

The present invention has been made in order to eliminate such conventional drawbacks, and when brushing the lower surfaces of the vehicle, the relative motion speed between the frame and the vehicle is lowered, and when brushing the higher surfaces, the relative motion speed is lowered. It is an object of the present invention to provide a car wash machine that can solve the above-mentioned conventional problems by allowing the movement speed to be switched to a high speed side.

B. Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention provides a frame, a swinging arm whose intermediate portion is supported by the frame so as to be swingable about a horizontal axis, A top surface rotating brush is rotatably supported on one end of the swinging arm and can brush the top surface of the vehicle, and a heavy object is fixed to the other end of the swinging arm, and the frame and the vehicle are connected to each other. A car wash machine capable of brushing a top surface rotating brush while relatively moving the frame and the vehicle in the front-back direction, wherein the speed of the relative movement between the frame and the vehicle can be switched between at least two levels of high and low levels. a drive means; a detector for detecting the height of the top surface of the vehicle; and, based on a detection signal from the detector, when the height detected by the detector is higher than a predetermined height, the drive means is moved to the high speed side; The present invention is also characterized by comprising a control device that controls switching of the drive means to a low speed side when the height is lower than a predetermined height.

(2) Effect When brushing the lower surface of the upper surface of the vehicle that is lower than a predetermined height, even if the contact surface pressure of the upper surface rotating brush is relatively small, the relative motion speed between the frame and the vehicle is switched to the low speed side. The lower surface is thoroughly brushed over time.

On the other hand, when brushing a high-level surface higher than a predetermined height on the top surface of a vehicle, the contact surface pressure becomes relatively large, so by switching the relative movement speed to a high speed side, the high-level surface can be brushed quickly and accurately. Can be brushed.

(3) Embodiment Hereinafter, an embodiment of the present invention will be described with reference to the drawings.First, in FIG. In other words, the vehicle can run along a traveling rail 3 laid on the ground, that is, it can run in the direction indicated by an arrow 4 along the longitudinal direction of the vehicle.

The frame 2 is equipped with a rotating brush device B, a drying device D, a detergent spraying device C, a wax coating device W, a scale remover spraying device M 1 , and a scale removing device M ₁ for cleaning, wax application, drying, scale removal, etc. M ₂ and rinsing water spray devices R ₁ and R ₂ are provided, respectively.

Frame 2 also includes a pair of left and right driving motors.
RM is installed and their driving engine
The output of the RM is decelerated by a reducer 40, and is further reduced by a sprocket 41 fixed to the output shaft of the reducer 40.
An endless chain 44 is suspended between the sprocket 43 and the sprocket 43 provided on the drive wheel 42 on the rail 3. The driving motor RM is of a rotational speed converting type, for example, uses a pole number converting motor to convert from two poles at high speeds to four poles at low speeds, and can be switched to two levels, high and low. The traveling rail 3, driving wheel 42, prime mover RM, reduction gear 40, both sprockets 41, 43, and chain 44 cooperate with each other to constitute the driving means 7 of the present invention.

Referring also to FIG. 2, the rotating brush device B is as follows:
It includes a top rotating brush 5 and a pair of side rotating brushes 6. The upper rotating brush 5 is swingably supported via a swing arm 9 on a horizontal horizontal shaft 8 that is rotatably supported on the frame 2 . That is, the horizontal shafts 8 are rotatably supported by the frame 2 in pairs on the left and right, and the upper rotating brush 5 is placed between one end of a pair of swinging arms 9 fixed at right angles to the ends of the horizontal shafts 8. Pivotally supported. A prime mover 10 as a heavy object that also functions as a balance weight is supported at the other end of one swinging arm 9. The driving force of this prime mover 10 is transmitted through the transmission within one swinging arm 9. It is transmitted to the upper rotating brush 5 via a mechanism (not shown). Furthermore, a balance weight 50 is fixed to the other end of the other swing arm 9. In this way, the upper rotating brush 5 is pivotally supported between one end of both swinging arms 9, and the prime mover 10 and balance weight 50 as heavy objects are fixed to the other end of the swinging arm 9. 8
The upper rotating brush 5 comes into contact with the upper surface of the vehicle with a contact surface pressure corresponding to the difference between the moment on the upper rotating brush 5 side centered at , and the moment on the heavy object side.

A sprocket 11 is fixed to one of the horizontal shafts 8, and an intermediate shaft 12 is rotatably supported on the frame 2 below the horizontal shaft 8. This intermediate shaft 12
Another sprocket 13 is fixed to. An endless chain 14 is suspended between both sprockets 11 and 13, and a piston rod 17 of an air cylinder 16 whose lower end is supported by the frame 2 is connected to a mounting bracket 15 fixed in the middle of the chain 14. be done. Therefore, by reducing the air cylinder 16, the upper rotary brush 5 can be held in the upper retracted position as shown by the two-dot chain line in FIG.
Also, if the air cylinder 16 is made inactive,
The upper rotating brush 5 can freely swing back and forth relative to the frame 2 about the horizontal shaft 8 as a fulcrum in response to contact with the upper surface of the vehicle.

In FIG. 3, a cam 51 is fixed in the middle of the other horizontal shaft 8, and a limit switch 52 as a detector of the present invention is disposed on the frame 2 corresponding to the cam 51. The cam 51 has a pair of inclined surfaces 53 and 54 extending in the radial direction from the center of the horizontal shaft 8 at a central angle α, and a pair of abutments bent from the tips of the inclined surfaces and extending in directions away from each other. It has an outer circumferential surface consisting of contact surfaces 55 and 56 and an arcuate surface 57 connecting the tips of both contact surfaces 55 and 56. As a result, the cam 51 has both inclined surfaces 5 forming a central angle α.
3, 54 and both abutment surfaces 55, 56 are cut out from the disc, and when the upper rotary brush 5 is at the lowest position, the notch is located upward, and the other horizontal axis It is fixed at 8. The limit switch 52 is supported by the frame 2 above the cam 51 so that both contact surfaces 55 and 56 can come into contact with the actuator 58 thereof. Moreover, the limit switch 52 changes its switching mode depending on whether the actuator 58 is in a hanging state as shown by the solid line in FIG. It is configured as follows. That is, the cam 51 rotates as shown by the arrow 59 in response to the swinging motion of the upper rotating brush 5, and is pressed by both contact surfaces 55 and 56, causing the actuator 58 to rotate. , 56 and the actuator 58 comes into contact with the arc surface 57, the switching mode of the limit switch 52 changes. Therefore, by appropriately setting the central angle α, the limit switch 52 can detect when the top rotating brush 5 has reached a set height or higher.

The rotation shafts 18 of the pair of side rotating brushes 6 are held in a holding cylinder 19, and the holding cylinder 19 is fixed to the movable frame 20 with its axis being vertical. Moving frame 20
is slidably engaged with a guide rail 21 horizontally mounted on the frame 2, and the support shaft 2 of the guide rail 21
2 is rotatably supported by the frame 2. Therefore, the guide rail 21, the moving frame 20, the holding cylinder 1
9. The rotating shaft 18 and the side rotating brush 6 are slidable in the traveling direction 4 using the supporting shaft 22 as a fulcrum.
A prime mover 23 is supported on the moving frame 20,
An endless chain 26 is suspended between a sprocket 24 fixed to the output shaft of the prime mover 23 and a sprocket 25 fixed to the end of the rotating shaft 18.
The side rotating brush 6 is rotationally driven by the prime mover 23 .

The drying device D includes a pair of side air blowing nozzles 27 that open inward on both sides of the frame 2, and a top air blowing nozzle 28 that opens downward at the top of the frame 2, which are connected to a blower 29. 28
is raised and lowered by a lifting means (not shown) in accordance with the height of the vehicle to be dried.

The detergent spraying device C includes a plurality of spray nozzles 47 provided in a detergent supply header 46 provided in a gate shape, and the wax applicator W includes a plurality of spray nozzles 49 provided in a wax supply header 48 provided in a gate shape. It consists of

Such a drying device D, a detergent spraying device C, and a wax applicator W are conventionally installed in car wash machines, and their configurations are also conventionally known.

The limescale remover spraying devices M ₁ and M ₂ are connected to frames 2 in front and behind the rotating brush device B along the traveling direction 4.
and those scale remover spraying devices M ₁ ,
Rinse water spray devices R ₁ and R ₂ are provided between M ₂ and the rotating brush device B, respectively.

In Fig. 4, scale remover spraying devices M ₁ , M ₂
is constructed by attaching a plurality of spray nozzles 33, 34 to gate-shaped supply headers 31, 32 supported inside the frame 2, facing the vehicle (not shown). These spraying nozzles 33 and 34 are attached to supply headers 31 and 32, respectively, so that the spraying direction can be adjusted, and the opening area thereof is set to be relatively large. Also rinse water spray device
R ₁ and R ₂ are constructed by attaching a plurality of spray nozzles 37 and 38 facing the vehicle to gate-shaped supply headers 35 and 36 supported inside the frame 2.

A water supply pump P, an air source A, a scale remover storage tank T ₁ and a base wax storage tank T ₂ are connected to the scale remover spraying devices M ₁ and M ₂ , respectively. In other words, the water supply pump P has a first solenoid valve.
S ₁ and the first ejector E ₁ are connected in this order,
A second solenoid valve S ₂ , a pressure reducing valve CV and a second ejector E ₂ are connected in this order to the air source A, and a first ejector E ₁ is connected at right angles to the second ejector E ₂ . The third solenoid valve S ₃ is installed in the scale remover storage tank T ₁ .
A fourth solenoid valve _S4 is connected to the base wax storage tank _T2 , and these are connected in parallel and at right angles to the first ejector _E1 . Furthermore, the second ejector E ₂ is connected to the upper center of the supply header 31 in one scale remover spraying device M ₁ via the fifth solenoid valve S ₅ , and
The other scale remover spraying device via the sixth solenoid valve S ₆
Connected to the top center of the supply header 32 at _M2 .

The water supply pump P also includes a rinse water spray device R ₁ ,
In order to supply water to R ₂ , their supply headers 35,
36 through seventh and eighth solenoid valves S ₇ and S ₈ , respectively.

As the scale remover stored in the scale remover storage tank _T1 , a strong alkaline agent having a pH of 14 in its original solution and adjusted to a pH of about 12 to 14 is used. As a result of the inventor's experiments, this is true of the conventional PH8.
This is based on the discovery that water scale cannot be removed with detergents with a pH of 10 to 10, but that scale removers with a pH of 12 to 14 can lift and remove water scale from vehicle painted surfaces. be.

Such rotating brush device B, drying device D, detergent spray device C, wax applicator W, rinsing water spray device R ₁ , R ₂ and scale remover spray device M ₁ ,
The operation of M ₂ and the traveling operation of the frame 2, that is, the operation of the traveling prime mover RM, are controlled by a control panel 39 (see Fig. 1) as a control device installed in the frame 2.
Controlled by The detection signal from the limit switch 52 is input to the control panel 39, and the running speed of the frame 2 by the driving means 7 is switched between high and low levels depending on the height of the top surface of the vehicle to be brushed by the top rotating brush 5. That is, when brushing a high-level surface of a vehicle that is higher than a predetermined height, such as a ceiling surface, the running speed of the frame 2 is set to a high speed side, and when brushing a low-level surface of a vehicle that is lower than a predetermined height, such as a bonnet surface, the running speed of the frame 2 is increased. The traveling speed is switched to the low speed side.

Next, the operation of this embodiment will be explained, with particular attention paid to the scale removal process, and the operation of the upper rotating brush 5 and the frame 2 will be explained in detail. In other words, in the descaling process, a descaling agent is sprayed in the form of foam onto the surface of the vehicle and the surface is brushed.However, if the low and high surfaces of the vehicle are brushed at the same speed as in the past, in the case of a passenger car, ,
Since the contact surface pressure of the upper rotary brush 5 on the bonnet surface and trunk surface is smaller than that on the ceiling surface, the limescale removal effect is inferior. Particularly on the bonnet surface, water scale is firmly attached due to the heat radiated from the engine, so the effectiveness of removing water scale is poor. For this reason, especially in white-painted vehicles, dark water stains may remain on the bonnet surface, resulting in an uneven finish on the treated surface compared to the ceiling surface. Therefore, during brushing, the frame 2 is run at a lower speed when brushing the lower surface than when brushing the higher surface to obtain an even treated surface over the entire upper surface of the vehicle. Figure ~ Figure 8,
This will be explained with reference to FIGS. 9 and 10. In addition, in FIGS. 5 to 8, the upper part "a" shows a simplified side surface, and the lower part "b" shows the simplified plane.

First, to remove limescale from the vehicle V, the rotating brush device B, the detergent spray device C, and the drying device D perform brushing cleaning and drying of the vehicle V in the same manner as in a conventional car wash machine.

Next, a start key (not shown) on the control panel 39 is pressed. As a result, frame 2 becomes the fifth
Go back and forth as shown by the arrows in the figure. At the same time, the first, second, third, and fifth solenoid valves S ₂ , S ₂ , S ₃ , and S ₅ open, and the fourth, sixth, seventh, and eighth solenoid valves S ₄ , S ₆ ,
S ₇ and S ₈ are kept closed. Therefore, the water from the water supply pump P sucks up the scale remover in the first ejector _E1 and reaches the second ejector _E2 .
In this second ejector _E2 , air from the air source A is foamed. The foamy scale remover is fed to the supply header 31 of one scale remover spraying device _M1 .
Then, the foam is sprayed toward the vehicle V from each spray nozzle 33 in the form of foam. At this time, since the opening area of the spray nozzle 33 is set to be relatively large, the bubbles of the scale remover adhere to the surface of the vehicle V without being crushed. Spraying the scale remover in the form of foam in this way prevents the scale remover sprayed on the surface of the vehicle V from immediately flowing down, and is necessary for lifting the scale from the surface of the vehicle V. This is to ensure a sufficient reaction time and obtain a uniform treated surface. Also, according to experiments, by forming the foam into a foam, it was possible to obtain a superior scale removal effect compared to simply spraying the liquid. Furthermore, the brushing by the rotating brush device B provides the same effect as the manual scrubbing operation, and allows the scale remover sprayed on the surface of the vehicle V to adhere more uniformly to the entire surface of the vehicle V.

The running speed of the frame 2 during spraying and brushing of the scale remover will be explained in detail with reference to FIG. The actuator 58 is not in contact with the cam 51.
At this time, the rotational speed of the driving motor RM is set to the low speed side, and the upper rotating brush 5 rotates on the bonnet surface of the vehicle V as the frame 2 travels at a low speed.
Brush over BT. And this frame 2
According to the low-speed running of the car, a relatively large amount of descaling agent from the descaling agent spraying device _M1 is also applied to the bonnet surface BT.
It will be sprinkled on top.

Next, the upper rotating brush 5 is moved to the bonnet surface BT.
Position P1 on the front wind surface FW after passing above
When reaching this point, the cam 51 rotates in response to the swing of the swing arm 9, the actuator 58 is pressed, and the switching mode of the limit switch 52 changes.
As a result, the rotational speed of the driving motor RM is switched to the high speed side, and the frame 2 runs at high speed. As a result, a relatively small amount of the scale remover from the scale remover spraying device _M1 is sprayed onto the ceiling surface RF as the frame 2 travels at high speed, and the upper rotating brush 5 is sprayed for a relatively short period of time. Brush the ceiling surface RF.

When the upper rotating brush 5 passes over the ceiling surface RF and reaches position P2 above the rear window RW, the cam 51 rotates in the opposite direction to that described above, the actuator 58 is released from the pressed state by the cam 51, and the limit switch is released. 52 switching mode changes. Thereby, the rotational speed of the driving motor RM is switched to the low speed side, and the frame 2 comes to travel at a low speed. Therefore, while the frame 2 is running at a low speed, the scale remover from the scale remover spraying device M ₁ is sprayed onto the trunk surface TK and brushed by the upper rotating brush 5 .

Next, the frame 2 is restored as shown by the arrow in FIG. 6, and the first, second, third and sixth solenoid valves S ₁ , S ₂ , S ₃ and S ₆ are opened, and the 4. Close the fifth, seventh, and eighth solenoid valves S ₄ , S ₅ , S ₇ , and S ₈ . As a result, the scale remover is sprayed in the form of foam from the other scale remover spraying device M ₂ toward the vehicle V, and brushing of the rotary brush device B is further performed in the same manner as the brushing described above.

The change in the traveling speed of the frame 2 at this time will be explained with reference to FIG. 10. When the frame 2 starts going back, the traveling speed of the frame 2 is low, and the upper rotating brush 5 passes over the trunk surface TK. When the actuator 58 reaches position P3 on the rear window RW, the actuator 58 is pressed by the cam 51 and rotates, and the switching mode of the limit switch 52 changes. As a result, the running speed of the frame 2 is switched to high speed. Top rotating brush 5
passes over the ceiling surface RF and the front window FW
When the actuator 58 reaches the upper position P4, the actuator 58 is released from the pressing state by the cam 51, and the traveling speed of the frame 2 is switched to the low speed side as the switching mode of the limit switch 52 changes.
In this state, the top rotating brush 5 is on the bonnet surface BT.
Pass over the top and return to the original position before the start of the outbound trip.

When the frame 2 returns to the descaling start position, the process is paused for, for example, 5 to 10 minutes. As a result, the limescale attached to the surface of the vehicle V is lifted off from the surface of the vehicle V by the limescale remover. Also, during this time, areas that are difficult to brush with the rotating brush device B are manually touched up.

After the 5 to 10 minute pause, the control panel 39
The above rinse start key (not shown) is pressed, and the frame 2 is moved forward and backward as shown by the arrows in FIG. Along with this, the seventh and eighth solenoid valves S ₇ and S ₈
, and closes the first to sixth solenoid valves S ₁ to S ₆ .
Therefore, water is sprayed toward the vehicle V from both rinse water spray devices R ₁ and R ₂ , and a brushing operation by the rotating brush device B is performed. As a result, the floating scale and excess scale remover are washed from the surface of the vehicle V. At this time, each rinse water spray device
Water is evenly sprayed onto the surface of the vehicle V by reducing the hole diameter of the spray nozzles 37, 38 provided in the supply headers 35, 36 of R ₁ and R ₂ and increasing the number of spray nozzles 37, 38. Can be done.

In addition, the water spray from one rinsing water spray device R ₂ is such that some of the water scales, etc. that have been once removed by the brushing of the rotary brush device B are transferred to the respective rotary brushes 5 and 6.
Because it adheres to the surface of the vehicle V due to the centrifugal force of
This is to wash it away.

Furthermore, as shown in FIG. 8, the frame 2 is moved back as shown by the arrow, and only the seventh and eighth solenoid valves S ₇ and S ₈ are opened, and the other solenoid valves S ₁ to _{S 6} are opened. Close the valve. As a result, both rinsing water spray devices R ₁ ,
Water is sprayed from _R2 , and the residue left in the rinsing process shown in FIG. 7 is washed away. At this time, the scale remover is not left on the surface of the vehicle V and the number of times of brushing is large, so the rotary brush device B remains inactive to avoid damaging the coated surface of the vehicle V.

In this manner, the lime scale removal process is completed, but when the upper rotating brush 5 passes over the high surface of the vehicle V, that is, the ceiling surface RF, that is, when the contact surface pressure of the brush 5 is relatively large, the traveling speed of the frame 2 is is set to a high speed, and when the upper rotating brush 5 passes over the lower surface of the vehicle V, that is, the bonnet surface BT and the trunk surface TK, that is, when the contact surface pressure of the brush 5 is relatively small, the running speed of the frame 2 is set to a low speed. Therefore, it is possible to minimize the difference in brushing effect between the lower and higher surfaces of the vehicle, and it is also possible to shorten the work time by not brushing the ceiling surface RF for an unnecessarily long time. can. In addition, when brushing the bonnet surface BT, which has a strong buildup of limescale due to heat dissipation from the engine, the frame 2 is run at a low speed, which allows sufficient time for thorough brushing and reduces the total amount of limescale remover sprayed. When brushing the ceiling surface RF, where limescale is relatively easy to remove, the frame 2 is moved at high speed, so brushing can be done accurately in a relatively short time, and the scale removal agent can be sprayed easily. The total amount is also saved.

After completing such a lime scale removal process, a wax application device W and a rinsing water spray device R ₂ are used to apply a vehicle polishing method developed by the present applicant (Japanese Patent Publication No. 1983-
4657) etc., polish the vehicle and let it dry. This makes it possible to obtain a glossier painted surface than before. At this time, the base wax liquid and the scale remover are distributed in the scale remover spraying device _M2 , but the effectiveness of the base wax liquid and the scale remover will not change even if a small amount of other substances are mixed in. Therefore, the scale remover spraying device can be shared.

In the above embodiments, only the brushing time in the scale removal process was described, but it goes without saying that the present invention can also be applied to the cleaning process. In other words, even when brushing with washing water that has been used in the past, the running speed of the frame 2 is set to a high speed to correspond to the high-level surfaces of the vehicle, and the running speed of the frame 2 is set to a low speed to correspond to the low-level surfaces of the vehicle. Even if controlled so as to do so, it is possible to minimize differences in the brushing effect between the high and low surfaces of the vehicle V, and it is possible to improve the efficiency of the processing work as a whole.

C. Effects of the Invention As described above, according to the present invention, there is provided a frame, a swinging arm whose intermediate portion is supported by the frame so as to be swingable about a horizontal axis, and a shaft rotatably supported at one end of the swinging arm. The upper surface rotating brush includes an upper surface rotating brush that is supported and capable of brushing the upper surface of the vehicle, and a heavy object fixed to the other end of the swing arm, and the upper surface rotating brush is configured to move the frame and the vehicle relative to each other in the longitudinal direction of the vehicle. A car wash machine capable of brushing the frame and the vehicle includes a drive means for said relative motion configured to be able to switch the relative motion speed between said frame and the vehicle into at least two levels of height and low, and a height of the top surface of the vehicle. and a detector for detecting, and a detection signal from this detector to set the driving means to the high speed side when the height detected by the detector is higher than a predetermined height, and to set the driving means to the high speed side when the height detected by the detector is lower than the predetermined height. Since the controller is equipped with a control device that controls switching to the low speed side, when brushing a lower surface lower than a predetermined height on the upper surface of the vehicle, the relative motion speed is switched to the low speed side even if the contact surface pressure of the upper rotating brush is relatively small. On the other hand, when brushing a high surface higher than a predetermined height on the upper surface of the vehicle, the contact surface pressure becomes relatively large. By switching the relative motion speed to a high speed side, the high-level surface can be quickly and accurately brushed, and as a result, it is possible to minimize the difference in brushing effect between the low-level surface and the high-level surface of the vehicle. , it can greatly contribute to improving the efficiency of processing work as a whole.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is an overall longitudinal sectional side view, Fig. 2 is a front view showing the upper rotating brush and its drive system, and Fig. 3 is an enlarged sectional view taken along the line - - in Fig. 2. Figure 4 is a perspective view showing the piping system of the scale remover spraying device and the rinsing water spraying device, Figures 5 to 8 sequentially show the operations during scale removal, and a is a simplified side view. , b is a simplified plan view thereof, and FIGS. 9 and 10 are diagrams for explaining changes in frame speed during the operation of FIGS. 5 and 6, respectively. DESCRIPTION OF SYMBOLS 1... Car wash machine, 2... Frame, 5... Top rotating brush, 7... Drive means, 9... Swinging arm, 10
... Prime mover as a heavy object, 39... Control panel as a control device, 50... Balance weight as a heavy object, 51... Cam, 52... Limit switch as a detector, V... Vehicle.

Claims (1)

[Claims] 1. A frame 2, a swinging arm 9 whose intermediate portion is supported by the frame 2 so as to be swingable around a horizontal axis,
a top rotating brush 5 rotatably supported by one end of the swinging arm 9 and capable of brushing the top surface of the vehicle V;
Heavy objects 10 and 5 fixed to the other end of the swing arm 9
0, and is capable of brushing the upper rotating brush 5 while moving the frame 2 and the vehicle V relative to each other in the longitudinal direction of the vehicle V, the relative movement between the frame 2 and the vehicle V The driving means 7 for the relative movement, which is configured to be able to switch the speed into at least two high and low stages, and the vehicle V
A detector 52 for detecting the height of the upper surface, and a detection signal of the detector 52 based on the detection signal of the detector 52.
The present invention is characterized by comprising a control device 39 that switches the driving means 7 to the high speed side when the detected height is higher than a predetermined height, and switches the driving means 7 to the low speed side when the detected height is lower than the predetermined height. , car wash machine. 2. The detector 52 is a limit switch,
The car wash machine according to claim 1, wherein a cam 51 for changing the switching mode of the limit switch is arranged to rotate integrally with the upper rotating brush 5.