JPH055700B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A. Object of the Invention (1) Industrial Application Field The present invention relates to a lifting operation control device for controlling the lifting and lowering operation of an upper surface drying nozzle in a vehicle body washing apparatus.

(2) Prior Art Conventionally, a top surface drying nozzle is used in a vehicle body washing apparatus to dry the top surface of the vehicle body. Then, the upper surface drying nozzle is moved up and down so as to follow the shape of the upper surface of the vehicle body.

As a device for lifting and lowering the upper surface drying nozzle in the vehicle body washing device, the device described in Japanese Utility Model Publication No. 12382/1982 is known. The device for controlling the lifting and lowering of the top drying nozzle in the vehicle body cleaning device brings the stylus and the flexible guide roller into contact with the top surface of the vehicle body to maintain a constant gap between the top drying nozzle and the top surface of the vehicle body. .

(3) Problems to be Solved by the Invention However, the method using the stylus and the flexible guide roller has the problem that they come into contact with the upper surface of the vehicle body, which may cause damage to the vehicle body. It was hot. Another problem was that the track of the flexible guide roller remained on the upper surface of the vehicle body.

In order to solve this problem, for example, as disclosed in Japanese Unexamined Patent Publication No. 119454/1982, the recorded contents of a recording means such as a card, which records the shape of the top surface of the vehicle, etc., are sent to the car wash machine before the car wash operation. Let it load,
A method has already been proposed in which the movement of each processing device is controlled based on the read information and the detected position of the movement amount detector of each processing device. In order to move the vehicle while accurately following the shape of the top surface of the vehicle, it is necessary to prepare recording means that accurately record the shape of the top surface of the vehicle body for each type of vehicle, and it is necessary to create and manage these recording means. In addition, since the unevenness of the actual top surface of the vehicle to be washed is not checked in advance before the drying process, any protrusions that are not recorded in the recording means may be recorded on the top surface of the vehicle. Another problem is that it becomes difficult to deal with vehicles that have been added with options.

The present invention has been made in view of the above, and it is an object of the present invention to provide a lifting/lowering operation control device for a top drying nozzle in a vehicle body washing device, which can solve all of the above-mentioned problems of the conventional devices.

B. Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, the present invention provides a traveling frame with an upper car wash brush and an upper drying nozzle that can be moved up and down, and the upper drying nozzle can be driven up and down. After brushing the upper surface of the vehicle body using the upper surface car wash brush, the upper surface drying nozzle is used to dry the upper surface of the vehicle body. A travel position detection device that detects a travel position of the traveling frame in a lifting operation control device for a top drying nozzle in a vehicle body cleaning device that controls and lifts and lowers the top drying nozzle so as to follow the top surface shape of a vehicle body. means, a top car wash brush position detecting means for detecting the vertical position of the top car wash brush, and a top car wash brush and a top dryer based on the output signal of the traveling position detecting means and the output signal of the top car wash brush position detecting means. Lifting position setting means for setting a lifting position of the top drying nozzle corresponding to the traveling position so as to correct a deviation in the mutual operating positions of the nozzles; and a top drying nozzle position detecting the lifting position of the top drying nozzle. and detecting means, and the driving means is controlled based on the set position of the lifting position setting means and the output signal of the upper surface drying nozzle position detecting means.

(2) Effect According to the above configuration, the lifting position setting means adjusts the mutual operating position deviation of the upper car wash brush and the upper drying nozzle based on the output signal of the running position detection means and the output signal of the upper car wash brush position detection means. The vertical position of the upper surface drying nozzle corresponding to the traveling position of the traveling frame is set so as to correct this. The drive means for the top drying nozzle is controlled based on the set position of the elevation position setting means and the output signal of the top drying nozzle position detection means. Corresponding to the actual lifting and lowering movement of the car wash brush, the upper surface drying nozzle can be controlled to rise and fall so as to follow the shape of the upper surface of the vehicle body without contacting it.

(3) Examples Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view of one embodiment of the present invention, and FIG. 2 is a side view of its essential parts. In the running frame 1,
Wheels 8, 8 are pivotally supported along traveling rails 7, 7 so as to be able to travel back and forth. Further, blowers 9, 9 are provided on both upper sides of the traveling frame 1, respectively. An upper surface drying nozzle 3 is connected to the tips of the blower pipes 10, 10 connected to the discharge ports of the blowers 9, 9.

A flexible guide roller 11 is provided at the center of the lower part of the upper surface drying nozzle 3, and support rods 1 are provided at both left and right ends.
2 and 12 are provided integrally. Said support rod 1
Elevating members 13 and 14 are fixed to the tips of 2 and 12. The elevating members 13 and 14 have guide rollers 15 and 15 pivotally supported on the upper part thereof and guide rollers 16 and 16 pivotally supported on the lower part thereof, and a guide member 17 provided on both sides of the traveling frame 1. 17. An operating member 19 is provided at the upper end of one of the elevating members 13 to operate an upper limit switch 18 for detecting the upper limit position of the upper surface drying nozzle 3. The upper limit switch 18 and the operating member 19 constitute upper drying nozzle upper limit position detection means _D5 . Furthermore, at the upper end of the other elevating member 14,
A swing limit switch 20 is provided which is activated when the lifting members 13 and 14 swing beyond a predetermined angle.

One end of the cables 21, 21 is fixed to the center of the upper surface of the upper surface drying nozzle 3. Said cable 2
1 and 21 pass through guide pulleys 22, 22, 23, and 23 that are pivotally supported by the running frame 1, and then are suspended to hang movable pulleys 24 and 24, and the other end is fixed to the running frame 1. The movable pulley 24, 2
4 is pivotally supported by a movable pulley frame 25, and the lower end of the movable pulley frame 25 is fixed to the upper end of the piston rod 5 of the cylinder 4 serving as a driving means, which 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. At the upper end of the cylinder 4, a stop position 6, which will be described later, is provided for stopping the piston rod 5.

The rotating shaft 27 of the guide pulleys 23, 23 is provided with an elevating upper surface drying nozzle position detecting means _D4 .

The wheels 8, 8 are provided with driven sprockets 28,
28 are provided coaxially, and driving sprockets 30, 30 are provided on the drive shafts of prime movers 29, 29 supported by the traveling frame 1. The driven sprockets 28, 28 and the driving sprockets 30, 3
0, chains 31, 31 are suspended.
The driving shaft of one of the prime movers 29 is provided with a traveling position detecting 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 configured so that the traveling frame 1 is connected to the traveling rail 7,
7, it is activated by a cam 33 provided on one of the running rails 7. The limit switch 32 and the cam 33 constitute a start position detection means _D6 .

The upper car wash brush 2 is mounted on pivot shafts 34, 34 rotatably supported on both sides of the traveling frame 1, respectively.
is swingably supported via swing arms 35, 35. The pivots 34, 34 are fixed to the intermediate portions of the swing arms 35, 35, and the support shaft ₂₁ of the upper car wash brush 2 is rotatably supported at the tip portions thereof. A prime mover 36 is provided at the base end of one of the swinging arms 35, and its output is transmitted to the support shaft _{2 1} of the upper car wash brush 2 via a transmission mechanism (not shown) provided inside the swinging arm. It is now being transmitted to A balance weight W is fixed to the base end of the other swinging arm 35. A magnet 37 is provided on one of the pivots 34, and together with a reed switch 38 which operates when the upper car wash brush 2 is at the upper limit position, constitutes upper car wash brush upper limit position detection means _D7 . The pivot 34 also has an upper surface car wash brush position detection means.
D ₂ is provided. On the other hand, 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 attached to the outer circumference of the piston rod 5 of the cylinder 4.
is wrapped. A cylindrical casing 6 ₁ of the stop device 6 is arranged so as to surround the piston rod 5 including the brake shoe 42 . A brake piston 43 defining an air chamber 6 ₂ is fitted into the casing 6 ₁ so as to be able to swing freely, and the piston 43 is pressed to open the air chamber 6 ₂ .
brake spring 4 which acts to reduce the volume of
4 is accommodated. The air chamber 6 ₂ has a supply port 45
via a pressurized air source Ai (FIG. 4). In addition, a plurality of brake arms 46 are housed radially in the air chamber ₆₂ so as to surround the piston rod 5, and the base ends (upper ends) of these brake arms 46 are connected to the inner surface of the brake shoe 42 and the casing ₆₁ . A roller 47 is rotatably supported at the tip (lower end) of the piston rod 5 so as to be able to swing freely in the radial direction of the piston rod 5.
On the outer surface of 7, by the brake spring 44,
The brake piston 43 is biased upward.
The tapered surface 48 of is pressed. Therefore, when pressurized air is not supplied to the air chamber ₆₁ , the elastic force of the brake spring 44 causes the brake piston 4 to
3 is raised, and its tapered surface 48 swings the brake arm 46 inward via the roller 47 to press the brake shoe 42 against the piston rod 5, and the piston rod 5 is braked. Further, when pressurized air is supplied from the pressurized air source Ai to the air chamber ₆₂ , the brake piston 43 is pushed down against the biasing force of the brake spring 44, and the rollers 47 move outward. Therefore, brake arm 4
6 no longer presses the brake shoe 42 against the piston rod 5, so the piston rod 5 operates freely.

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 and a three-way solenoid valve 51 that adjust the pressure.
The piping 49 also includes a pressure reducing valve 52 and a three-way solenoid valve 53.
It is also connected to the upper part of the pressurized container 54 via. Then, the hydraulic oil put in the pressurized container 54 is transferred to the cylinder 4 through a check valve 55 with a fixed throttle.
supplied to The check valve 55 with a fixed throttle is opened when the cylinder 4 contracts, and closed when the cylinder 4 extends.

FIG. 5A is a diagram showing the specific structure of the detection parts of the running position detection means D ₁ , the upper surface car wash brush position detection means D ₂ , and the upper surface drying nozzle position detection means D ₄ shown in FIGS. 1 and 2. , FIG. 5B is a diagram showing the output waveform. In FIG. 5A, a slit plate Sl is placed opposite a disk RD on which a plurality of slit patterns are written on the outer periphery and one slit pattern is written on the inner periphery. The slit plate Sl has A-phase slits SA and B-phase slits SB corresponding to the slit pattern on the outer periphery, and Z-phase slits SZ, corresponding to the slit pattern on the inner periphery.
are provided for each. Then, the light emitting diode LEDA and the phototransistor TrA are arranged with the A-phase slit SA and the disk RD in between.
A light emitting diode LEDB and a phototransistor are sandwiched between the B phase slit SB and disk RD.
TrB, and a light emitting diode LEDZ and a phototransistor TrZ are arranged facing each other with the Z-phase slit SZ and disk RD interposed therebetween. When the disk RD is rotated in the direction of the arrow, the light from the light emitting diodes LEDA to LEDZ passes through or is blocked, so the phototransistors TrA to TrZ output the signals STrA to STrA shown in FIG.
Output STrZ. The signals STrA and STrB are pulse signals having a period T with a phase difference of 90°, and the signal STrZ is a signal indicating the origin position. And the signal STrA~
STrZ with rotation direction determination circuit and counter (shown)
By inputting , the rotation angle of the disk RD can be detected as the number of pulses. Therefore, the running position of the running frame 1 from the start position,
The vertical position of the upper car wash brush 2 from the upper limit position and the vertical position of the upper drying nozzle from the upper limit position can be detected as respective pulse numbers.

FIG. 6 is a block diagram of a control system in which a microcomputer is used as the elevation position setting means D ₃ for setting the elevation position of the upper surface drying nozzle 3 and other control means. The control means 60 is
A microprocessing unit 61 that performs arithmetic processing, a read-only memory _M1 that stores programs and fixed data, a random access _M2 that is used for a work area and storage of variable data, and an input interface 62. It consists of an output interface 63 and a bus 64 that connects them. The input interface 62 includes the above-mentioned running position detection means.
D ₁ , upper car wash brush position detection means D ₂ , upper dry nozzle position detection means D ₄ , upper dry nozzle upper limit position detection means D ₅ , start position detection means D ₆ , upper car wash brush upper limit position detection means D ₇ , reciprocating The signal generating means D ₈ and the output signal of the swing limit switch 20 are input. The output interface 63 is connected to the solenoid valves 51 and 53 shown in FIG.
Solenoid coils L51 and L53, prime movers 29 and 29 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. The bus 64 also includes a random access memory.
A storage means M consisting of M ₂ is also connected.

Next, the operation of the embodiment of the present invention having the above-described configuration will be explained.

FIG. 7 is a diagram showing the brushing process when the traveling frame 1 moves back and forth, FIG. 8 is a flowchart showing the operation of the control means 60 in that case, and FIG. FIG.

In FIG. 7, the traveling frame 1 is located at position 1a.
When the upper car wash brush 2 is at the upper limit position 2a, when the reciprocating signal generating means _D8 outputs a signal indicating the reciprocating movement, the control means 60 controls the eighth
It operates based on the flowchart shown in the figure. In step _S1 , it is determined whether brushing processing is to be performed. Then, if it is a brushing process, the process advances to step _S3 , and if not, the process advances to step _S2 to perform other processes. In step _S3 , the control device 65 of the storage cylinder 39 is activated so that the piston rod 40 of the storage cylinder 39 can freely extend. Further, the motor 36 is operated to rotate the upper car wash brush. and the prime mover 29,
29 is activated and the wheels 8, 8 rotate, and the traveling frame 1 starts moving forward. Therefore, as shown in FIG. 7, the upper car wash brush 2 has been lowered to position 2b. At this time, the traveling position detection means D ₁
outputs a signal relating to the position of the traveling frame 1, and upper car wash brush position detection means _D2 outputs a signal relating to the position of the upper car wash brush. Then, when the traveling frame 1 moves forward and leaves the position 1a, the start position detection means _D6 stops outputting a signal because the cam 33 does not operate the limit switch 32. Therefore, the operation proceeds from step _S4 to step _S5 . At this time, as shown in FIG. 7, the upper car wash brush 2 contacts the body of the vehicle V at positions 2c, 2d, and 2e to perform the brushing process. On the other hand, in step _S5 , the traveling position detection means
D ₁ and the output signal of the top car wash brush position detection means D ₂ are input, and in step S ₆ the lifting position setting means D ₃ sets the lifting position of the top drying nozzle 3.
In step _S7 , the storage means M is stored in correspondence with the traveling position. These steps _S5 to _S7 are repeated until the reciprocating signal generating means _D8 no longer outputs the reciprocating signal in step _S8 . And the seventh
As shown in the figure, the top car wash brush 2 is at position 2f~
2g, and when the traveling frame 1 reaches position 1b, the outbound signal is no longer output, and the operation proceeds from step _S8 to step _S9 in FIG. In step _S9 , the prime movers 29, 29 are deactivated,
The traveling frame 1 is stopped. Further, the prime mover 36 is deactivated, the rotation of the upper car wash brush 2 is stopped, and the storage cylinder 39 is driven by the control device 65 to raise the upper car wash brush 2.
At that time, when it rises to the position 2h shown in Fig. 7,
Since the magnet 37 operates the reed switch 38, the upper car wash brush upper limit position detection means _D7 outputs a signal. Therefore, the control device 65 stops the storage cylinder 39, stores the upper car wash brush 2 at the upper limit position, and ends the brushing process.

Next, FIG. 9 shows the principle of setting the vertical position of the upper surface drying nozzle 3 in step _S8 described above.
The upper car wash brush 2 descends from its upper limit position 2a to a position where the pivot 34 rotates by an angle θ ₁ , and the vehicle V
is in contact with the top of the vehicle body. At this time, the swinging arm 3
5 is inclined by an angle θ ₂ with respect to the horizontal line H passing through the pivot 34. This angle θ ₂ can be easily determined from the angle θ ₀ at the upper limit position 2a and the output signal of the upper car wash brush position detection means D ₂ corresponding to the angle θ ₁ . If the distance between the centers of the pivot 34 and the support shaft 2 ₁ is L, then from the horizontal line H to the support shaft 2 1
The distance A to the center of ₁ is expressed by equation (1).

A=Lsinθ ₂ ...(1) Since the optimum position for the drying process of the upper surface drying nozzle 3 is the lifting position shown in the figure, the lifting position SD from the upper limit position set by the lifting position setting means _D3 is ₃ is expressed by equation (2).

SD ₃ =A+X+C(θ ₁ ) =Lsinθ ₂ +X+C(θ ₁ ) (2) X is a value determined by the upper limit position of the top drying nozzle 3 and the height position of the pivot shaft 34. Also, the correction value C
(θ ₁ ) is determined by the angle θ ₂ of the swinging arm 35 from the horizontal line H, which changes the pressure of the upper car wash brush 2 against the upper surface of the vehicle body of the vehicle V and deforms the upper car wash brush 2, so the support shaft 2 ₁ This is for correcting changes in the distance between the center of the vehicle V and the top surface of the vehicle body, and is a value determined in advance for θ ₁ . At this time, the output signal of the traveling position detection means D ₁ is the position SD ₁
This corresponds to However, the top drying nozzle 3 is in position SD ₁ '. Since the position SD ₁ increases with respect to the direction in which the traveling frame 1 travels, the position SD ₁ ' is expressed by equation (3).

SD ₁ ′=SD ₁ −B=SD ₁ −Lcosθ ₂ (3) The lifting position SD ₃ and the distance B are stored in advance in the control means 60 in correspondence with the angle θ ₁ .

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

FIG. 10 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. 10, the traveling frame 1 is located at position 1b.
When the upper surface drying nozzle 3 is at the upper limit position 3a, when the reciprocating signal generating means _D8 outputs a signal indicating the reciprocating movement, the control means 60 controls the first
It operates based on the flowchart in Figure 1. In step _S11 , it is determined whether or not drying processing is to be performed. and,
If it is a drying process, proceed to step _S13 , otherwise proceed to step _S12 to perform another process. In step _S13 , the blowers 9, 9 are operated, and
By operating the prime movers 29, 29,
Air is ejected from the upper surface drying nozzle 3, and the traveling frame 1 returns, thereby starting the drying process. At this time, if the upper surface drying nozzle 3 comes into contact with the upper surface of the vehicle body and swings due to a malfunction of the control means 60 or the like, the swing limit switch 20 is activated. Therefore, in step _S14 , it is determined that the output signal of the swing limit switch 20 is present, and the process proceeds to step _S15 , where all operations are stopped. on the other hand,
If there are no malfunctions or other inconveniences, proceed with the steps.
Proceeding to _S16 , the output signal of the traveling position detection means _D1 is input. Then, in step _S17 , the storage means M is
Read the memory contents of. At this time, as shown in FIG. 10, the upper surface drying nozzle 3 is separated from the center of the pivot 34 of the swing arm 35 by a distance D. Therefore, the read address Ad when the travel position is SD ₁ is
It is expressed by equation (4).

Ad=SD ₁ +D (4) The setting value SD ₃ stored in the address Ad in equation (4) is the optimum vertical position for the drying process of the upper surface drying nozzle 3. At step _S18 , the output signal _SD4 of the upper surface drying nozzle position detection means _D4 is input. Then, in step _S19 , it is compared with the set value _SD3 . As a result of this comparison, if SD ₄ > SD ₃ , step S ₂₀ is selected, and if SD ₄ = SD ₃ , step S 20 is selected.
If SD ₄ <SD ₃ , the process advances to step S ₂₂ and to step S ₂₁ , respectively. In step _S20 , the solenoid valve 53
The current flowing through the solenoid coil L53 is cut off and becomes de-energized. Therefore, since hydraulic oil is supplied to the cylinder 4, the upper surface drying nozzle 3 rises. The loop of steps S ₁₈ , S ₁₉ and S ₂₀ is then repeated until the top drying nozzle 3 is at the optimum position.
In step _S21 , the electromagnetic valve 53 is energized because a current flows through the solenoid coil L53, and the working oil supplied to the cylinder 4 returns to the pressurized container 54 due to the weight of the upper surface drying nozzle 3, so that the upper surface is dried. Nozzle 3 descends. At this time, since the check valve of the fixed throttle check valve 55 is closed, the hydraulic oil is regulated by the fixed throttle. Therefore, the upper surface drying nozzle 3 descends at a slower speed than when it ascends. The loop of steps S ₁₈ , S ₁₉ and S ₂₀ is then repeated until the top drying nozzle is in the optimum position. In step _S22 , the solenoid valve 51 is energized 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 3 is maintained at a constant vertical position. Then, when the traveling frame 1 returns to the position 1a shown in FIG. 10 and the start position detection means _D6 outputs a signal, the process proceeds to step _S24 based on the determination in step _S23 , and if no signal is output, the process proceeds to step _S16 . return. Therefore,
As shown in FIG. 10, the upper surface drying nozzle 3 moves up and down to positions 3d, 3c, and 3d, and maintains a position suitable for the upper surface of the vehicle V and the drying process. Then, proceeding to step _S24 , the blowers 9, 9 and the prime movers 29, 29 are stopped, and the upper surface drying nozzle 3 is raised. At this time, as shown in FIG. 10, when the top drying nozzle 3 reaches the position 3c, the top drying nozzle upper limit position detection means _D5 outputs a signal,
Stop the rise and finish the drying process.

Next, effects specific to the above-described embodiment of the present invention will be described. According to the embodiment of the present invention described above, when the swing limit switch 20 is activated and outputs a signal,
Stop all operations. Further, flexible guide rollers 11, 11 are provided at the center of the lower part of the upper surface drying nozzle 3. Therefore, even if a malfunction or the like occurs in the control device 60 and the upper surface drying nozzle 3 comes into contact with the body of the vehicle V, there is little risk of damaging the body.

Furthermore, a stop device 6 provided on the cylinder 4 stops the piston rod 5. Therefore, the upper surface drying nozzle 3 is fixed in the raised and lowered position when the piston rod 5 is stopped. Therefore,
The gap between the upper surface drying nozzle 3 and the upper surface of the vehicle body of the vehicle V 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 present invention is not limited to the embodiments described above, and various design changes can be made without departing from the scope of the invention described in the claims. Is possible.

For example, the traveling position detection means D ₁ , the upper car wash brush position detection means D ₂ , and the upper drying nozzle position detection means D ₄ are configured as shown in FIG. 12 instead of using those shown in FIG. 5A. A code pattern corresponding to the rotation angle may be written on the disk RD ₂ , and the light from the light emitting diode group LED may be received by the phototransistor group Tr via the slit Sl ₂ and the disk RD ₂ . In this case, the rotation direction determining circuit and the counter are unnecessary. Further, any so-called rotary encoder may be used.

Furthermore, when the traveling speed of the traveling frame 1 is constant, the traveling position detecting means _D1 can also be a constant period pulse signal generator and a counter that counts the pulse signals.

Furthermore, the upper surface car wash brush 2 is moved to the swing arm 34.
As shown in FIG. 13, the sprocket 6 is driven by a motor 71.
A chain 68 is suspended between the chain 6 and the sprocket 67, a truck 69 and a balance weight 70 are provided at symmetrical positions of the chain 68, and the top car wash brush 2 is attached to the truck 69.
The support shaft 2 ₁ may be supported.

C. Effects of the Invention As described above, according to the lifting operation control device for the upper surface drying nozzle in the vehicle body cleaning apparatus of the present invention, the traveling position detection means detects the traveling position of the traveling frame, and the raising and lowering position of the upper surface car washing brush is controlled. a top car wash brush position detection means for detecting the position of the top car wash brush, and an output signal of the running position detection means and an output signal of the top car wash brush position detection means to correct a deviation in the mutual operating positions of the top car wash brush and the top drying nozzle. A lifting position setting means for setting a lifting position of the upper surface drying nozzle corresponding to the traveling position, and a top drying nozzle position detecting means for detecting the lifting position of the upper surface drying nozzle. Since the driving means of the upper surface drying nozzle is controlled based on the output signal of the upper surface drying nozzle position detection means, during the drying process, it corresponds to the actual lifting and lowering movement of the upper surface car wash brush during the brushing process performed before that. , the upper surface drying nozzle can be controlled to move up and down so as to follow the shape of the upper surface of the vehicle body without contacting it. Therefore, there is no need to use a means to detect contact with the upper surface of the vehicle body during the drying process, and there is no need to use a means for detecting contact with the upper surface of the vehicle body, thereby preventing scratches on the vehicle body. The drying process can be performed accurately without leaving traces of the guide rollers, etc., and the unevenness of the top surface of the car body to be dried can be actually checked automatically using the top car wash brush during the brushing process. Since the drying process begins after drying, there is no need to prepare a special recording means for each car model to record the shape of the top surface of the car body, making management and handling easy.Additionally, protrusions can be added to the top surface of the car body as an option. It is possible to respond accurately to such vehicles.

Further, the vertical position of the top drying nozzle is set based on the vertical position of the top car wash brush during the brushing process prior to the drying process, and also to compensate for deviations in the operating positions of the top car wash brush and the top drying nozzle. Therefore, even though the top drying nozzle and the top car wash brush have completely different operating positions and functions, it is possible to ensure that the top drying nozzle matches the shape of the top of the car body in relation to the movement of the top car wash brush. It can be followed.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a side view of main parts, and FIG. 3 is a diagram showing the configuration of a stop device.
FIG. 4 is a diagram showing the air and hydraulic circuits, FIG. FIG. 5 is a diagram showing the output signal of A, FIG. 6 is a block diagram of the control system, FIG. 7 is a diagram showing the brushing process, FIG. Figure 9 is a diagram showing the principle of setting the vertical position of the top drying nozzle, Figure 10 is a diagram showing the drying process,
Fig. 1 is a flowchart showing the operation of the control means in the case of Fig. 10, Fig. 12 is an example of a design change of the configuration shown in Fig. 5A, and Fig. 13 is an example of a design change of the support mechanism for the upper car wash brush. This is an example. 1... Traveling frame, 2... Top car wash brush,
3...Top surface drying nozzle, 4...Cylinder, D ₁ ...
...Traveling position detection means, D ₂ ...Top car wash brush position detection means, D ₃ ...Elevating position setting means, D ₄ ...
Upper surface drying nozzle position detection means, M...memory means.

Claims (1)

[Scope of Claims] 1. A top car wash brush 2 and a top drying nozzle 3 are provided on the traveling frame 1 so as to be movable up and down, and a driving means 4 for driving the top drying nozzle 3 up and down is provided. After brushing the upper surface of the vehicle body, the upper surface drying nozzle 3 is used to dry the upper surface of the vehicle body, and during the drying process, the driving means 4 is controlled to move the upper surface drying nozzle 3 to the vehicle. A lifting and lowering operation control device for a top drying nozzle in a car body cleaning device for a vehicle, which lifts and lowers to follow the top surface shape of the car body, includes a running position detection means D ₁ that detects the running position of the running frame 1, and the top car washing brush. Based on the output signal of the traveling position detection means D ₁ and the output signal of the upper car wash brush position detection means D ₂ , the upper car wash brush ₂ and the upper surface are detected. Lifting position setting means for setting a lifting position of the upper surface drying nozzle 3 corresponding to the traveling position so as to correct a deviation in the mutual operating positions of the drying nozzles 3;
D ₃ and top drying nozzle position detection means D ₄ for detecting the vertical position of the top drying nozzle 3,
Based on the set position of the lifting position setting means _D3 and the output signal of the upper surface drying nozzle position detecting means _D4 ,
A lifting/lowering operation control device for an upper surface drying nozzle in a vehicle body washing device, characterized in that the driving means 4 is controlled. 2. A storage means M is provided for storing the set position of the elevation position setting means _D3 , and the driving means ₄ is controlled based on the stored contents of the storage means M and the output signal of the upper surface drying nozzle position detection means D4. A lifting/lowering operation control device for a top drying nozzle in a vehicle body washing apparatus according to claim 1.