JPH0224250A - Method for drying car body - Google Patents

Abstract

PURPOSE:To ensure a good view field after a car is washed in a car body washer using a gate type running frame by controlling the running speed of the running frame to a lower level when its upper face drying nozzle is at a position to spray air to the front or rear windshield of the car. CONSTITUTION:A car body washer is provided with air blowers respectively at both sides of a gate type running frame 1 capable of reciprocating along a pair of running rails 7 capable of passing a car body. An upper face drying nozzle 2 is connected to the tip ends of air supply pipes 10 interconnected to the discharge ports of the air blowers 9. The nozzle 2 is elevated by means of a chain 31 being driven by a prime mover 29. In this case, in a drying step after a car washing step, while it is detected that the nozzle 2 is at a position to spray air to at least one of front and rear windshields of an automobile V, a running prime mover 3 capable of changing the rotational speed is controlled to reduce the running speed of the frame 1 rather than the case that the nozzle 2 is at another position.

Description

DETAILED DESCRIPTION OF THE INVENTION A0 OBJECTS OF THE INVENTION (1) Industrial Field of Application The present invention relates to a method for drying an automobile body, and more particularly to a drying method using a portal type traveling frame with an upper surface drying nozzle.

(2) Conventional technology When a gate-type traveling frame equipped with an upper surface drying nozzle straddles an automobile and travels in the longitudinal direction, the upper surface drying nozzle is simultaneously activated to supply drying air to the upper surface of the automobile body from the nozzle. A method of drying an automobile body by spraying air is conventionally known, but in this conventional method, the traveling speed of the gate-shaped traveling frame is always controlled to a constant value regardless of the operating position of the top drying nozzle.

(3) Problems to be Solved by the Invention If the gate-type traveling frame is controlled at a constant speed throughout the entire drying process as in the conventional drying method described above, the effect of the drying process on the top surface of the car body will be reduced over the entire area of the top surface of the car body. It becomes uniform throughout. However, on the top of the car body, especially the windshield and rear glass, it is necessary to carefully dry the windshield and rear glass in order to obtain better visibility immediately after treatment. If a relatively slow constant speed is set, the drying process for the top surfaces of the car body other than the windshield and rear glass, such as the bonnet and roof surfaces, will take longer than necessary, resulting in longer processing times and lower efficiency. There's a problem. Furthermore, if the traveling speed of the gate-shaped traveling frame is set to a relatively high constant speed in order to avoid this problem, another problem arises in that the drying process of the windshield and rear glass becomes insufficient.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for drying an automobile body that can solve all of the above-mentioned contradictory problems of conventional methods.

B1 Arrangement of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention provides a method for discharging the upper surface drying nozzle when a concave traveling frame equipped with the upper surface drying nozzle straddles the automobile and travels in the front and back direction of the vehicle. In a method for drying an automobile body, the method operates simultaneously to blow drying air onto the upper surface of the automobile body from the nozzle.
While the gantry-type traveling frame is running, while the upper surface drying nozzle is in a position to blow air onto at least one of the windshield or the rear glass of the automobile, the gantry-type traveling frame is lowered than when in other positions. It is characterized by controlling the running speed to a low level.

(2) Effect According to the above configuration, while the gantry type traveling frame is traveling, while the upper surface drying nozzle is in the position to blow drying air to at least one of the windshield or the rear glass, the gantry type traveling frame moves at a low speed. Since the vehicle is driven on the road, the drying process for at least one of the windshield and the rear glass takes more time and is performed more carefully than the drying process for other upper surfaces of the vehicle body, such as the bonnet surface.

Furthermore, when the upper surface drying nozzle is located at a position other than the above-mentioned position, the portal traveling frame travels at a relatively high speed, so that the drying process for the other vehicle body upper surfaces can be efficiently performed in a relatively short time.

(3) Examples Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a front view of an embodiment of a car wash machine for carrying out the method of the present invention, and FIG. 2 is a side view of the main parts thereof. Wheels 8, 8 are pivotally supported along a traveling rail 7.7 on a gate-shaped traveling frame l capable of straddling an automobile so as to be able to travel back and forth. Further, blowers 9.9 are provided at the upper portions of both sides of the traveling frame 1, respectively. Then, the blower 9
, 9, and a top drying nozzle 2 is connected to the tip of a blower pipe 10.10 connected to the discharge ports of .

A flexible guide roller 11 is provided at the center of the lower part of the upper surface drying nozzle 2, and support rods 12, 12 are integrally provided at both left and right ends. At the tip of the support rod 12.12,
Lifting members 13,14 are fixed. The lifting member 1
3.14 is a guide roller 15. which is pivotally supported on the upper part of the guide roller 15.
15 and a guide roller 16.16 pivotally supported below it.
This engages guide members 17.17 provided on both sides of the running frame l. Furthermore, an actuating member 19 is provided at the upper end of one of the elevating members 13 to actuate an upper limit switch 18 that detects the upper limit position of the upper surface drying nozzle 2 . The upper limit limit switch 18 and the actuating member 19 act as means for detecting the upper limit position of the upper drying nozzle;
. is configured.

Furthermore, a lifting member 13 is provided at the upper end of the other lifting member 14.
．． A swing limit switch 20 is provided that is activated when 14 swings beyond a predetermined angle.

A chain 21 is provided at the center of the upper end of the upper drying nozzle 2.
．． 21 is fixed at one end. Said chain 21.2
1 is a guide pulley 22, 22 .
After passing through 23.23, it is suspended and becomes a movable pulley 24.24
is suspended, and the other end is fixed to the traveling frame 1. The movable pulleys 24, 24 are pivotally supported by a movable pulley frame 25, and the movable pulley frame 25 is fixed to the upper end of the piston rod 5 of a cylinder 29 serving as a driving means whose lower end is pivotally supported by the traveling frame. . Further, a stopper 26 for determining the upper limit position of the movable pulley frame 25 is provided on the traveling frame 1. A piston rod 5 is provided at the upper end of the cylinder 29.
A stopping device 6, which will be described later, is provided.

The rotating shaft 27 of the guide pulley 23, 23 is provided with a lifting upper surface drying nozzle position detecting means.

A driven sprocket 28° 28 is coaxially provided on the wheel 8.8, and a prime mover 29 supported by the running frame 1
．． A drive sprocket) 30.30 is provided on the drive shaft 29. A chain 31.31 is suspended between the driven sprocket 28.28 and the driving sprocket 30.30.

The drive shaft of one of the variable rotational speed prime movers 3 is provided with traveling position detection means D1.

A limit switch 32 is provided at the center of the lower part of the traveling frame 1. The limit switch 32 is
The cam 33 provided on one of the running rails 7 is activated when the running frame I is at the starting position of the running rail 7. The limit switch 32 and the cam 33 constitute a start position detection means.

The upper surface car wash brush 4 has a swing arm 35, a pivot shaft 34, 34 rotatably supported on both sides of the traveling frame l, respectively.
It is swingably supported via 35. Swing arm 35.35
The pivot shaft 34.34 is fixed to the middle part thereof, and the support shaft 2.34 of the upper car wash brush 4 is fixed to the tip part thereof. is rotatably supported. A prime mover 36 is provided at the base end of the - side swinging arm 35, and its output is transmitted to the support shaft 21 of the upper car wash brush 4 via a transmission mechanism (not shown) provided inside the swinging arm.
It is intended to be transmitted to A balance weight W is fixed to the base end of the other swinging arm 35. Further, a magnet 37 is provided on one of the pivots 34, and the upper surface car wash brush 4
Together with the reed switch 38, which is activated when the brush is at the upper limit position, it constitutes upper car wash brush upper limit position detection means. Further, the pivot shaft 34 is provided with an upper car wash brush position detecting means constituting the vehicle body detecting means. A piston rod 40 of a storage cylinder 39 for storing the upper car wash brush 2 at the upper limit position is attached to the other pivot 34 via an operating arm 41.

FIG. 3 shows a specific structure of the stop device 6 shown in FIGS. 1 and 2. A ring-shaped brake shoe 42 is wrapped around the outer periphery of the piston rod 5 of the cylinder 29. A cylindrical casing 61 of the stop device 6 is arranged to surround the piston rod 5 including the brake shoe 42. A brake piston 43 defining an air chamber 6□ is slidably fitted into the casing 61, and acts to press the piston 43 to reduce the volume of the air chamber 6□. A brake spring 44 is housed therein. Said air chamber6. is communicated via a supply port 45 with a pressurized air source Ai (FIG. 4). Also, in the air chamber 62, a plurality of brake arms 46 are installed on the piston rod 5.
The base end (upper end) of the brake arm 46 is supported by the brake shoe 42 and the inner surface of the casing 61 to be able to swing freely in the radial direction of the piston rod 5. A roller 47 is rotatably supported at the tip (lower end), and the tapered surface 48 of the brake piston 43, which is urged upward by the brake spring 44, is pressed against the outer surface of the roller 47. There is. Therefore, when pressurized air is not supplied into the air chamber 61, the brake piston 43 is raised by the elastic force of the brake spring 44, and its tapered surface 48 is connected to the roller 47.
The brake arm 46 is swung inward to press the brake shoe 42 against the piston rod 5, and the piston rod 5 is braked.

Further, the air chamber 6. When pressurized air is supplied to the brake piston 43, the brake piston 43 is pushed down against the urging force of the brake spring 44, and the roller 47 moves outward. Therefore, the brake arm 46 no longer presses the brake shoe 42 against the piston rod 5, so the piston rod 5 can freely operate.

FIG. 4 is a diagram showing the air and hydraulic circuits.

A pipe 49 connected to the pressurized air source Ai is connected to the air supply port 45 of the stop device 6 via a pressure reducing valve 50 that adjusts the pressure and a normally open three-way solenoid valve 51. Also, piping 4
9 is also connected to the upper part of the pressurized container 54 via a pressure reducing valve 52 and a normally open three-way solenoid valve 53. Then, the hydraulic oil put in the pressurized container 54 is transferred to the check valve 5 with a fixed throttle.
5 to the cylinder 29. The check valve 55 with a fixed throttle is opened when the cylinder 29 contracts, and closed when the cylinder 29 extends.

FIG. 5(a) is a diagram showing the specific structure of the detection parts of the traveling position detection means DI, the upper surface car wash brush position detection means Ds, and the upper surface drying nozzle position detection means shown in FIG. 1.2. , FIG. 5(b) is a diagram showing the output waveform.

In FIG. 5(A), a slit plate S2 is placed facing a disk RD on which a plurality of slit patterns are written on the outer circumference and one slit pattern is written on the inner circumference. The slit plate Sl has A-phase slits SA and B-phase slits SB corresponding to the slit pattern on the outer periphery,
Z-phase slit SZ corresponding to the slit pattern on the inner circumference
1 is provided for each.

Then, the light emitting diode LEDA and the phototransistor TrA sandwich the A-phase slit SA and the disk RD, the light-emitting diode LEDB and the phototransistor TrB sandwich the B-phase slit SB and the disk RD, and the Z-phase A light emitting diode LEDZ and a phototransistor TrZ are arranged facing each other with the slit SZ and the disk RD interposed therebetween.

When the disk RD is rotated in the direction of the arrow, the light from the light emitting diodes LEDA-LEDZ passes through or is blocked, so the phototransistors TrA to TrZ are arranged as shown in FIG.
It outputs signals 5TrA to 5TrZ shown in b). signal 5
TrA and 5TrB are pulse signals having a period T with a phase difference of 90°, and the signal 5TrZ is a signal indicating the origin position. Then, by inputting the signals 5TrA-3TrZ to a rotation direction determining circuit and a counter (not shown), the rotation angle of the disk RD can be detected as the number of pulses.

Therefore, the running position of the running frame l from the start position, the lifting position of the upper car wash brush 4 from the upper limit position,
The vertical position of the upper drying nozzle 2 from the upper limit position can be detected as the number of pulses.

FIG. 6 shows an elevation position setting means Dll for setting the elevation position of the upper surface drying nozzle 2, a discrimination means Do for discriminating whether the inclination angle of the upper surface of the automobile body is greater than a predetermined value, and the variable rotation speed prime mover 3. It is a block diagram of the control system of tL& using a microcomputer as rotation speed control means D4 which controls the rotation speed, and other control means. The control means 60 includes a microprocessing unit 61 that performs arithmetic processing, a read-only memory M that stores programs and fixed data, a random access memory M that is used for a work area and storage of variable data, and an input interface. 62, an output interface 63, and a bus 64 connecting them. The input interface 62 includes the above-mentioned traveling position detection means D1, upper surface car wash brush position detection means D5, upper surface drying nozzle position detection means DI, upper surface drying nozzle upper limit position detection means I)to, start position detection means 6, and upper surface The output signals of the car wash brush upper limit position detection means, the reciprocation signal generation means 8, and the swing limit switch 20 are input. The output interface 63
is the solenoid coil L51. of the solenoid valve 51.53 shown in FIG. L53, a variable rotation speed prime mover 3.3 provided on the traveling frame 1, a prime mover 36 provided on the swing arm 35, and a control device 65 for the storage cylinder 39 are connected. Also connected to the bus 64 is a storage means M consisting of a random access memory M2.

Next, the operation of the above embodiment will be explained.

FIG. 7 is a diagram showing the brushing process when moving the traveling frame 1, FIG. 8 is a flowchart showing the operation of the control means 60 in that case, and FIG. 9 is a diagram showing the principle of setting the elevation position of the upper surface drying nozzle 3. It is a diagram.

In FIG. 7, when the traveling frame l is at position W (1a) and the upper car wash brush 4 is at the upper limit position (4a), when the reciprocating signal generating means Dll outputs a signal indicating reciprocating, the control The means 60 operates based on the flowchart of FIG. In step Sl, it is determined whether brushing processing is to be performed.

Then, if it is a brushing process, the process proceeds to step S3; if not, the process proceeds to step S2, and other processes are performed.
In step S, the control device 6 of the storage cylinder 39
5, the piston rond 4 of the storage cylinder 39
0 can be expanded freely. In addition, the prime mover 3
6 to rotate the top car wash brush. and,
The variable rotational speed motor 3.3 is operated by the rotational speed control means D4 at the rotational speed that has passed through the brushing process, and the wheels 8
, 8, the traveling frame 1 starts moving forward.

Therefore, as shown in FIG. 7, the top car wash brush 4 is
It has descended to position (4b).

At this time, the traveling position detecting means D1 outputs a signal regarding the position of the traveling frame 1, and the upper car wash brush position detecting means outputs a signal regarding the position of the upper car wash brush 4, respectively. Then, the traveling frame 1 moves back and forth to the position (l
a) When leaving the start position detection means, the cam 3
3 does not operate the limit switch 32, so no signal is output. Therefore, the operation proceeds to step S, and at this time, as shown in FIG. Perform processing. on the other hand,
In step S, the traveling position detecting means D1% and the upper surface car wash brush position detecting means are installed.

The output signal is input, and in step Sh, the elevation position setting means sets the elevation position of the upper surface drying nozzle 2, and in step S, it is stored in the storage means M in correspondence with the traveling position. These steps S, ~S, are step S
, are repeated until the reciprocating signal generating means no longer outputs the reciprocating signal. Then, as shown in FIG. 7, when the upper car wash brush 4 advances to the position (4f to 4g) and the traveling frame 1 reaches the position (1b), the forward signal is no longer output, and the operation continues as shown in FIG. Step S.

Proceed to step S. In step s1, the variable rotation speed motor 3.3 is deactivated and the traveling frame 1 is stopped. Further, the driving force a36 is deactivated, the rotation of the upper car wash brush 4 is stopped, and the storage cylinder 39 is driven by the control device 65 to raise the upper car wash brush 4. At that time, when it rises to the position (4h) shown in FIG. 7, the magnet 37 activates the reed switch 38, so that the upper car wash brush upper limit position detection means outputs a signal. Therefore, the control device 65 controls the storage cylinder 39
, and store the upper car wash brush 4 to the upper limit position.
Finish the brushing process.

Next, FIG. 9 shows the principle of setting the vertical position of the upper surface drying nozzle 2 in step SL1 described above.

The upper surface car wash brush 4 has been lowered from its upper limit position (4a) to a position where the pivot shaft 34 has rotated by an angle θ1, and is in contact with the upper surface of the vehicle body of the vehicle V. At this time, the swinging arm 35 is
It is tilted by an angle θ2 with respect to the horizontal line H passing through. This angle θ2 is the angle θ at the upper limit position (4a). and the angle θ
The condition of the product can be determined from the output signal of the upper car wash brush position detection means DS corresponding to , . And axis 3
4 and support shaft 2. Let L be the distance between the centers of support shaft 2. and horizontal line H. The distance A to the center of is expressed by the formula (1)% Formula % Since the optimum position for the drying process of the upper surface drying nozzle 2 is the lifting position shown in the figure, the upper limit position is set by the lifting position setting means. The elevating position SD3 from is expressed by equation (2).

S D 3 = A + X + C (θ1) = Lsi
nθZ +X+C(θ,) ・・・・・・・・・・・・・・・・・・・・・(2)X
is a numerical value determined by the upper limit position of the upper surface drying nozzle 2 and the height position of the pivot shaft 34. In addition, the correction value C(θ,) is determined by the angle θ2 of the swinging arm 35 from the horizontal line H, which changes the pressure of the upper car wash brush 4 against the upper surface of the vehicle body of the vehicle V and deforms the upper car wash brush 4. This is for correcting the change in the distance between the center of the shaft 21 and the top surface of the vehicle body of the vehicle (2), and is a value determined in advance for θ. At this time, the output signal of the traveling position detection means D1 is the position SD,
This corresponds to However, the top drying nozzle 2
Rank! ? Located in SDI'. Since the position S Dr becomes larger with respect to the direction in which the traveling frame l travels, the position ffs D.

' is expressed by equation (3).

SD1'=SD+ B=SD1'Lcosθ2
(3) The lifting position SD and the distance MB are stored in advance in the control means 60 in correspondence with the angle θ1.

Therefore, the data expressed by equation (2) is stored in the storage means M at the address expressed by equation (3).

FIG. 1θ is a diagram showing the drying process when the traveling frame 1 goes back, and FIG. 11 is a flowchart showing the operation of the control means 60 in that case.

In FIG. 1O, the running frame l is in position (1b),
When the upper surface drying nozzle 2 is at the upper limit position (2a), when the reciprocating signal generating means Dll outputs a signal indicating backward movement, the @ control means 60 operates based on the flowchart of FIG. 11.

In step 311, it is determined whether drying processing is to be performed. and,
If it is a drying process, the process advances to step S13; otherwise, the process advances to step 311 to perform other processes.

In step 513, the blower 9.9 is operated, and the rotation speed variable motor 3.3 is controlled by the rotation speed control means D.
4, air is ejected from the upper surface drying nozzle 2, and the traveling frame 1 returns at high speed, thereby starting the drying process. At this time, due to a malfunction of the control means 60, etc., the upper surface drying nozzle 2
When it comes into contact with the upper surface of the vehicle body and swings, the swing limit switch 20 is activated. Therefore, step 5l
It is determined that the output signal of the at'ta dynamic limit switch 20 is present, and the process proceeds to step S15, where all operations are stopped.

On the other hand, if no inconvenience such as malfunction occurs, step S
Proceed to I&, and input the output signal of the traveling position detection means. And step 31? At this time, as shown in FIG. 10, the upper surface drying nozzle 2 is separated from the center of the pivot 34 of the swing arm 35 by a distance.

Therefore, the read address Ad when the running position is iff s o + is expressed by equation (4).

Ad=SDI +D・・・・・・・・・・・・1 Old・
- (4) The set value SD stored in the address Ad of this equation (4) is the optimal vertical position for the drying process of the upper surface drying nozzle 2. At this time, the set value SDI stored at the address Adx that is a predetermined value away from the address Ad on the side corresponding to the forward direction of the running frame 1 is also read out, and in step Sll, the set value SD is changed from the set value SD to the set value SDs.
* is subtracted, and it is determined whether the absolute value of this value is greater than or equal to a predetermined value. If the absolute value of this value is greater than or equal to a predetermined value, the inclination angle of the upper surface of the vehicle V is greater than or equal to the predetermined value, and the upper surface drying nozzle 2 is connected to the windshield f or rear glass r.
Since this is the case, step S
1. Then, the variable rotation speed motor 3.3 is operated at a low speed. If this difference is less than the predetermined value, step S2
Then, the variable rotation speed motor 3.3 is operated at high speed. And step S+1. St. Then proceed to step Sol. In step S2, the upper surface drying nozzle elevation position detection means is provided.

The output signal S D a of is input. Then, in step S, it is compared with the set value SD. As a result of this comparison, if SD4 > s[)3, step S, 3 is performed;
Da ” S If D3, go to step SZS, SD
4<SDi, the process proceeds to step St4. In step 321, the electromagnetic valve 53 is de-energized by cutting off the current flowing through the solenoid coil L53. Therefore, since hydraulic oil is supplied to the cylinder 29, the upper surface drying nozzle 2 rises.

And step S! The loop of I+ Szz+ Stz is repeated until the top drying nozzle 2 is at the optimal position. In step 324, the electromagnetic valve 53 is excited because current flows through the solenoid coil L53, and the hydraulic oil supplied to the cylinder 29 returns to the pressurized container 54 due to the weight of the top dry nozzle 2, so that the top dry nozzle 2 goes down. At this time, since the check valve of the fixed throttle stop valve 55 is closed, the hydraulic fluid is regulated by the fixed throttle. Therefore, the upper surface drying nozzle 2 descends at a slower speed than when rising. And step S Zl+S
The loop of 22+ S ta is repeated until the top drying nozzle is in the optimum position. Step S2. Now, the solenoid valve 51 is excited because current flows through the solenoid coil L51. Therefore, the stop device 6 is activated and the piston rod 5 is stopped, so that the upper surface drying nozzle 2 is maintained at a constant vertical position. Then, when the traveling frame 1 returns to the position W (1a) shown in FIG. 1O and the start position detection means outputs a signal, it is determined in step Sth whether step St? If no signal is output, the process returns to step S4. Therefore, the top drying nozzle 2
As shown in FIG.
It runs at high speed until it reaches position C), and when it is at position 1 (2c to 2d) where the upper surface drying nozzle 2 points toward the rear window r, it runs at low speed, and when it reaches the position (2d to 2d) where it points toward the vehicle roof surface.
2e to 2f), the vehicle travels at high speed; when the vehicle is in a position pointing toward the windshield r (2f to 2g), it travels at low speed; and when it passes position (2g), it travels at high speed again.

Then, proceeding to step sit, the blower 9.9 and the variable rotation speed prime mover 3.3 are stopped, and the upper surface drying nozzle 2 is raised. At this time, as shown in Figure 1O,
When the upper surface drying nozzle 2 reaches the position (2e), the upper surface drying nozzle upper limit position detection means;

outputs a signal, stops the rise, and ends the drying process.Next, effects specific to the above embodiment will be described. According to the embodiment, when the swing limit switch 20 is activated and outputs a signal, all operations are stopped.

Further, flexible guide rollers 11, 11 are provided at the center of the lower part of the upper surface drying nozzle 2. Therefore, even if the upper surface drying nozzle 2 comes into contact with the body of the automobile V due to malfunction or the like in the control device 60, there is little risk of damaging the vehicle body.

Furthermore, a stop device 6 provided on the cylinder 29 stops the piston rod 5. Therefore, the top drying nozzle 2
is fixed at the vertical position when the piston rod 5 is stopped. Therefore, the gap between the upper surface drying nozzle 2 and the upper surface of the vehicle body of the automobile (2) can be accurately maintained at a constant distance suitable for the drying process.

Although the embodiments of the present invention have been described in detail above, the car wash machine for carrying out the method of the present invention is not limited to the above embodiments (there are no exceptions to the invention described in the claims). It is possible to make various design changes without any problems.

For example, as the vehicle body detection means, it is possible to use a plurality of sensors provided in the vertical direction on the side surface of the traveling frame 1 facing the vehicle, or an ultrasonic transmitter/receiver.

In these cases, since the raising and lowering operation of the upper surface drying nozzle 2 and the traveling speed of the traveling frame 1 can be controlled while detecting the vehicle height, the drying process can also be performed on both the reciprocating movement of the traveling frame 1.

Also, instead of raising and lowering the upper drying nozzle 2 using the cylinder 29, a prime mover can be used, and instead of being suspended by the chain 21, 21, it can be supported by a swing arm.

In addition, in cases where the orientation of the vehicle with respect to the traveling frame 1 is determined, the set value S performed in step Sll+
It is determined whether the absolute value of the value obtained by subtracting the set value 5D3x from D is greater than or equal to a predetermined value, and if it is greater than or equal to the predetermined value, step S1. If the value is less than or equal to a predetermined value, the process proceeds to step S2. If the sign of the calculated value is a predetermined sign depending on the direction of the vehicle, the process proceeds to step S1.
If the sign is not the predetermined sign, step Sl
In this case, only one of the windshield f and the rear glass r, whose inclination angle of the upper surface of the vehicle body is equal to or greater than a predetermined value, can be dried at a low speed.

Therefore, if only the windshield f, which requires particularly careful processing, is dried at a low speed, the time required for the drying process can be further shortened.

Furthermore, instead of pivotally supporting the upper car wash brush 4 using the swing arm 34, as shown in FIG.
sprocket 66 and sprocket 67 driven by
A chain 68 is hung around the chain 68, a truck 69 and a balance weight 70 are provided at symmetrical positions of the chain 68, and the support shaft 2. of the upper car wash brush 2 is attached to the truck 69. It may also be pivoted.

C0 Effects of the Invention As described above, according to the present invention, when the gate-type traveling frame provided with the upper surface drying nozzle runs in the front and back direction across the vehicle, the upper surface drying nozzle is simultaneously activated, and the vehicle is removed from the vehicle through the nozzle. In the method for drying a car body, the top surface drying nozzle blows air onto at least one of a windshield or a rear glass of the car while the portal traveling frame is running. Since the traveling speed of the concave traveling frame is controlled to be lower while the vehicle is in the vehicle than in other locations, the drying process for at least one of the windshield or the rear window is not performed on other vehicle body top surfaces, such as the bonnet surface. It takes more time and care to perform the treatment than the treatment, and therefore, it is possible to ensure better visibility immediately after the treatment. Moreover, since the drying process for the other upper surface of the vehicle body is carried out in a relatively short time, there is no risk that the drying process as a whole will require a long time, which can contribute to improving the processing efficiency.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of a car wash machine for carrying out the method of the present invention, Fig. 2 is a side view of the main parts, Fig. 3 is a diagram showing the configuration of a stop device, and Fig. 4 is an air and hydraulic pressure A diagram showing the circuit, FIG. 5(a) is a diagram showing the configuration of the detection parts of the traveling position detection means, the top car wash brush position detection means, and the top drying nozzle position detection means, and FIG. 5(b) is the diagram shown in FIG. FIG. 6 is a block diagram of the control system; FIG. 7 is a diagram showing the brushing process; FIG. 8 is a flowchart showing the operation of the control means in the case of FIG. 7; 10 is a diagram showing the drying process, FIG. 11 is a flowchart showing the operation of the control means in the case of FIG. 10, and FIG. 12 is a top car wash brush. This is an example of a design change of the support mechanism.

Claims (1)

[Claims] Portal running frame (1) with top drying nozzle (2)
When the vehicle (V) straddles the vehicle (V) and travels in the longitudinal direction thereof, the upper surface drying nozzle (2) is operated at the same time to blow drying air from the nozzle (2) onto the upper surface of the vehicle body of the vehicle (V). In the method for drying an automobile body, the upper surface drying nozzle (2) sprays air onto at least one of the windshield (f) or the rear glass (r) of the automobile (V) while the portal traveling frame (1) is running. A method for drying an automobile body, characterized in that the running speed of the gate-shaped running frame (1) is controlled to be lower while the gantry is in a spraying position than when it is in any other position.