JP2560173B2 - Lifting / lowering device for fluid injection nozzle in vehicle body cleaning device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body cleaning apparatus having an injection port capable of ejecting a fluid onto the upper surface of the vehicle body of the vehicle.
Fluid jet nozzle supported by the frame and its fluid
And a lifting device for lifting the spray nozzle,
The movement of the vehicle along with the relative movement of the vehicle and the vehicle in the front-back direction.
Make the body injection nozzle follow the shape of the vehicle body
The present invention relates to an elevating and lowering device for a fluid ejection nozzle .

[0002]

2. Description of the Related Art Conventionally, in a vehicle body cleaning apparatus for a vehicle, the upper surface of the vehicle body is washed by jetting high-pressure water from a shower nozzle and by a drying nozzle. Shower nozzle,
And fluid drying nozzles such as an upper surface drying nozzle, and a photoelectric switch capable of detecting the vehicle body surface is used to raise and lower these ejection nozzles so as to follow the vehicle body upper surface shape without contact. Are known (for example, Japanese Examined Patent Publication No. 49-4431 and Japanese Patent Laid-Open No. 62-62).
-120250 gazette).

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
Intended 9-4431 JP detects the relative position between the vehicle body surface and the nozzle by the first to third photoelectric switch capable of elevating with nozzles are arranged at mutually spacing, its
Since the elevation of the nozzle is controlled by using the three detection signals of these switches, there is a problem that the control structure becomes complicated as a whole and the cost increases. Also when its control, for example for a nozzle that none of photoelectric switches spaced vertically detects the vehicle body surface condition is arranged to increase, almost to the window glass surface that is particularly inclined nozzle of the motor vehicle In the case of raising along, even if the upper photoelectric switch detects the vehicle body surface (the portion near the outer end face of the windshield), the lower photoelectric switch is inward from the outer end face of the windshield (this inner portion). Is more likely to transmit light than the portion near the outer end face), and it becomes impossible to detect the vehicle body surface by sensing the light transmitted therethrough,
In that case, there is a risk that the nozzle cannot rise and collides with the windshield surface. On the other hand, since the descending of the nozzle is controlled on condition that all the first to third photoelectric switches detect the vehicle body surface, even one of the photoelectric switches has a light-projecting surface or a light-receiving surface with cleaning water or the like. If it becomes dirty and becomes in a light-shielded state, there arises a disadvantage that the nozzle cannot be lowered.

In Japanese Patent Laid-Open No. 62-120250, a photoelectric switch detects the relative position between the vehicle body surface and the nozzle to control the elevation of the nozzle , that is, the nozzle is lowered. When the photoelectric switch detects the upper surface of the vehicle body , it raises the nozzle and
When the nozzle is too far from the upper surface of the vehicle body and the photoelectric switch no longer detects the upper surface of the vehicle body, the nozzle is lowered again. Therefore follow the vehicle body upper surface shape as undulating nozzle even body upper surface is a substantially horizontal ceiling surface or the like is frequently repeated rise and fall of the lift drive system increasingly unnecessarily elevating the frequencies of nozzle There is a problem of lowering durability.

The present invention has been made in view of the above-mentioned problems, and the fluid structure is improved while the structure of the device is simplified and the durability is improved.
An elevating and lowering operation device for a fluid injection nozzle in a vehicle body cleaning device of a vehicle, which is capable of accurately following the injection nozzle in a non-contact manner with respect to the shape of the upper surface of the vehicle and avoiding the occurrence of a failure as much as possible. The purpose is to provide.

[0006]

In order to achieve the above object, the present invention provides an injection port capable of injecting a fluid onto the upper surface of a vehicle body of a vehicle.
And a fluid ejection nozzle supported by a frame,
An elevating device that elevates and lowers the fluid ejection nozzle.
With the relative movement of the vehicle and the vehicle in the front-back direction,
The fluid injection nozzle is made to follow the shape of the upper surface of the vehicle body.
In the lifting and lowering operation device for the fluid ejection nozzle in the vehicle body cleaning device of the vehicle, the ejection port of the fluid ejection nozzle
Movement of the frame below and below the vehicle
Is disposed on the front side in the direction of the arrow and moves up and down together with the fluid injection nozzle.
First photoelectric switch and below the first photoelectric switch
And at the rear side in the relative movement direction with a space between them.
A second photoelectric switch that is installed and moves up and down together with the fluid ejection nozzle.
Switch, the detection result of the first photoelectric switch and the second light
Control of the lifting device based on the detection result of the electric switch.
The control means raises the fluid ejection nozzle when the first photoelectric switch detects the vehicle body surface, and the first photoelectric switch does not detect the vehicle body surface and the second photoelectric switch is Fluid jet when the vehicle surface is detected
When the elevation of the injection nozzle is stopped and neither the first photoelectric switch nor the second photoelectric switch detects the vehicle body surface, the fluid ejection
It is characterized in that the lifting device is controlled so as to lower the slip .

[0007]

EXAMPLES Hereinafter, a description will be given of an embodiment of the present invention with reference to the drawings. FIG. 1 is a front view of an embodiment of the present invention, and FIG. 2 is a side view of essential parts of the embodiment of the present invention. In FIGS. 1 and 2, wheels 8 are pivotally supported on a gate-shaped frame 1 as a frame so as to reciprocate along traveling rails 7. Blowers 9 and 9 are provided on both upper sides of the gate frame 1, respectively. An upper surface drying nozzle 2 as a fluid injection nozzle is connected to the tip of the blower pipes 10 connected to the discharge ports of the blowers 9.

Support rods 1 are provided at the left and right ends of the drying nozzle 2.
1, 11 are provided. Guide members 3, 3 provided on both sides of the portal frame 1 are provided at the tips of the support rods 11, 11.
Elevating members 12 and 13 that can be moved up and down are fixed.

One end of each of the cords 14, 14 is fixed to the central portion of the upper end of the upper surface drying nozzle 2. The rope 14,
Reference numeral 14 is a guide pulley 15, 1 pivotally supported on the gate-shaped frame 1.
5,16,16 and then drooped to move pulley 17,
17 is suspended, and the other end is fixed to the portal frame 1. The movable pulleys 17, 17 are pivotally supported by a movable pulley frame 18, and the lower end of the movable pulley frame 18 is fixed to the upper end of a piston rod 5 of a cylinder 4 pivotally supported by the portal frame 1. At the upper end of the cylinder 4, a stop device 6 described below for stopping the piston rod 5 is provided.

The elevating members 12 and 13 can be swung in the moving direction of the portal frame 1 (perpendicular to the paper surface in FIG. 1) about the lower guide rollers 19 and 19 which are pivotally supported at the lower portions thereof. Are engaged with the guide members 3, 3. In addition, the swing arm 20 is provided above the one lifting member 12.
Is rotatably supported, and an upper guide roller 21 is rotatably supported at the tip thereof. Further, the lifting member 12 and the swing arm 20.
A neutral spring 22 is stretched between them. Further, a limit switch 23 is provided above the other lifting member 13, which operates when the lifting members 12 and 13 are swung by a predetermined angle or more and outputs a signal for stopping the traveling of the gate frame 1. There is. A guide roller 25 is axially supported at the tip of the actuator 24 of the limit switch 23.

On the side of the elevating member 12 of the supporting rods 11 and 11, which is disposed below the upper surface drying nozzle 2 as a fluid jet nozzle and ascends and descends integrally with the nozzle 2, at the time of resumption of the drying process. For use, only one first photoelectric switch K
₁ and the first photoelectric switch K ₁ are provided at intervals in the vehicle front-rear direction and below and are moved up and down integrally with the nozzle 2, and are commonly used during the forward and backward passes of the drying process. a second photoelectric switch K _2, is disposed to its second photoelectric switch K ₂ at each interval in the longitudinal direction and the upper vehicle integrally lift and the nozzle 2, for the time of forward stroke of the drying process Is provided with only one other first photoelectric switch K ₁ ′, and in the illustrated example, the three photoelectric switches K ₁ , K ₂ and K ₁ ′ are arranged symmetrically below the upper surface drying nozzle 2. It is provided.

On the other hand, the elevating member 1 of the supporting rods 11 and 11.
On the third side, light sources L ₁ , L ₂ , L ₁ ′ are arranged at corresponding positions of the photoelectric switches K ₁ , K ₂ , K ₁ ′.

Around the cylinder 4, there is provided a cylinder fall-prevention metal fitting 26 that extends from the gate-shaped frame 1 with a certain gap, and the movable pulley frame 18 is lowered above the cylinder 4. A stopper 27 for controlling is provided. Further, the gate-shaped frame 1 is provided with a stopper 28 that restricts the rise of the movable pulley frame 18. further,
The solenoid valve 42 is connected to the stop device 6, the check valve with fixed throttle 46 is connected to the cylinder 4, and the pressurizing container 45 is connected to the check valve 46 with fixed throttle, which are connected to the air and hydraulic circuits described later. It is connected.

Thus, the cylinder 4 and the stop device 6 are
An elevating device E of the present invention for elevating the upper surface drying nozzle 2 in cooperation with each other is configured.

Furthermore, side drying nozzles 29, 29 are provided on both sides of the gate frame, and rotary rollers 30, 30 are provided at the center of the lower portion of the top drying nozzle 2.

FIG. 3 is a diagram showing the configuration of the stop device 6 shown in FIGS. The piston rod 5 is provided with a ring-shaped brake shoe 31.
The upper part of the brake arm 32 is pressed against the position 1. The upper portion of the brake arm 32 is supported between the brake shoe 31 and the casing of the stopping device 6 so as to be swingable in the radial direction of the piston rod 5. A roller 33 is axially supported on the lower portion of the brake arm 32, and the roller 33 is pressed inward by a tapered portion 35 ₁ of a brake piston 35 that is biased upward by a brake spring 34. Since the brake shoe 32 is pressed against the piston rod 5 by the brake arm 32, unless the pressurized air from the solenoid valve 42 is supplied to the air supply port 36, the piston rod 5
Is stopped. Then, when pressurized air is supplied, the brake piston 35 is pushed downward against the biasing force of the brake spring 34, and the roller 33 moves to the outside. Therefore, the brake arm 32 does not press the brake shoe 31 against the piston rod 5, and the piston rod 5 operates freely.

FIG. 4 is a diagram showing the air and hydraulic circuits. The pipe 40 connected to the pressurized air source is connected to the air supply port 36 of the stop device 6 via the pressure reducing valve 41 for adjusting the pressure and the three-way solenoid valve 42. The pipe 40 is also connected to the upper part of the pressurizing container 45 via a pressure reducing valve 43 and a three-way solenoid valve 44. Then, the hydraulic oil contained in the pressurizing container 45 is passed through the check valve with a fixed throttle 46 to the cylinder 4
Is supplied to. The check valve with fixed throttle 46 is opened when the cylinder 4 contracts and closed when the cylinder 4 extends.

FIG. 5 shows the photoelectric switches K ₁ , K ₂ and K.
FIG. 1 is a diagram showing a connection between ₁ ′ and a coil of a solenoid valve. The control circuit shown in this diagram is a fluid injection type when a _first photoelectric switch K ₁ (K ₁ ′) detects a vehicle body surface as described later. No
The upper surface drying nozzle 2 serving as a cheat is raised, and the first photoelectric switch K ₁ (K ₁ ′) does not detect the vehicle body surface and the second
When the photoelectric switch K ₂ detects the vehicle body surface, the nozzle 2
Stop moving up and down, and then the first photoelectric switch K
₁ (K ₁ ′) and the second photoelectric switch K ₂ constitute the control means 60 of the present invention for controlling the elevating device E so as to lower the nozzle 2 when neither the vehicle body surface is detected.

In the coil 44C of the solenoid valve 44, a contact K ₁ S that opens when the light of the first photoelectric switch K ₁ is cut off during the return of the drying process, and a contact RAS that closes during the return of the drying process. Are connected. In addition, the solenoid valve 4
The second coil 42C, at the time of forward stroke of the drying process and 'contact K ₁ S to close when the light is blocked' the other of the first photoelectric switch K _1, the second photoelectric switch K ₂ light is blocked A contact K ₂ S that opens when the drying process is performed and a contact RBS that closes when the drying process goes forward are connected. Then, the contact K ₁ S and the coil 44C are connected, and the contact K ₁ S'and the contact K ₂ S are connected.

Next, the operation of the embodiment of the present invention having the above construction will be described.

FIG. 6 is a diagram showing the position of the upper surface drying nozzle 2 in the case where the drying process is performed by the backward movement of the portal frame 1.
The gate-shaped frame 1 moves from the position shown in (A) in the figure to the position shown in (B) along the traveling frames 7, 7. At this time, a brushing process and a water washing process are performed. Then, the contact RAS is closed at the position shown in FIG.
Since the light from the light source L ₁ is passing through the photoelectric switch K _{1, the} contact K ₁ S is also closed, so that a current flows through the coil 44C and the solenoid valve 44 is closed. Therefore, the upper surface drying nozzle is lowered by its own weight from the upper limit position (a) determined by the stopper 27 to the lower limit position (b) determined by the stopper 28. At this time, the hydraulic oil from the cylinder 4 is transferred to the check valve with fixed throttle 46.
Since the check valve is closed, it is adjusted by the fixed throttle and returns to the pressurized container 45. Therefore, the upper surface drying nozzle 2
Descends at a slow speed.

When the gate-shaped frame 1 is moved from the position shown in (B) in the direction of the arrow and the upper surface drying nozzle 2 is located in (C), the light from the light source L ₁ corresponding to the _first photoelectric switch K ₁ is emitted from the vehicle. Since it is cut off by the inclined rear glass surface of _{No. 1,} the contact K ₁ S opens in response to this, and no current flows through the coil 44C. Therefore, the solenoid valve 44 is opened, the cylinder 4 is pressurized, and the upper surface drying nozzle 2 moves up. At this time, the check valve of the fixed throttle check valve 46 is opened.
Therefore, the upper surface drying nozzle 2 moves up at a high speed. When the light from the light source L ₁ corresponding to the first photoelectric switch K ₁ passes by this rise, the contact K ₁ S is closed again and the upper surface drying nozzle 2 descends.
While repeatedly descending, the upper surface drying nozzle 2 ascends substantially along the rear glass surface.

When the upper surface drying nozzle 2 reaches the position (d) corresponding to the ceiling surface of the vehicle, the second photoelectric switch K ₂
The light of the light source L ₂ corresponding to is blocked by the vehicle ceiling surface,
Since the light of the light source L ₁ corresponding to the first photoelectric switch K ₁ passes, the contact K ₂ S is closed, the contact K ₁ S is also closed, and a current flows through the coils 42C and 44C. Therefore, the solenoid valve 4
2, 44 are excited, and the piston rod 5 stops the stop device 6.
Since it is stopped by, the upper surface drying nozzle 2 is kept at the elevating position suitable for the drying process.

When the upper surface drying nozzle 2 reaches the position (e) and comes to face the inclined windshield surface of the vehicle, the light of the light source L ₂ corresponding to the _second photoelectric switch K ₂ passes therethrough, so that the contact is made. K ₂ S opens, and no current flows through the coil 42C. Therefore, the solenoid valve 42 is opened, the stop of the piston rod 5 by the stop device 6 is released, and the upper surface drying nozzle 2 is lowered. When the light of the light source L ₂ corresponding to the second photoelectric switch K ₂ is blocked by this lowering, the contact K ₂ S is closed again and the lowering of the upper surface drying nozzle 2 is stopped. While repeating, the upper surface drying nozzle 2 descends substantially along the windshield surface to reach the lower limit position (f). Then, when the gate-shaped frame 1 reaches the position shown in (A), the contact RAS is opened, and no current flows through the coil 44C. Therefore, the solenoid valve 44 is opened, the cylinder 4 is pressurized, and the upper surface drying nozzle 2 moves up to the upper limit position.

FIG. 7 is a diagram showing the position of the upper surface drying nozzle 2 in the case where the drying process is performed by the backward movement of the portal frame. The gate-shaped frame 1 runs from the position shown in (C) to the position shown in (D). At this time, the contact RBS is closed,
Since the light of the light source L ₁ ′ corresponding to the other first photoelectric switch K ₁ ′ passes, the contact K ₁ S ′ is also closed and the current flows through the coil 44C. Therefore, the solenoid valve 44 is excited, and the upper surface drying nozzle 2 descends from the upper limit position (g) to the lower limit position (h).

When the upper surface drying nozzle 2 reaches the position (i),
The light of the light source L ₁ ′ corresponding to the other first photoelectric switch K ₁ ′ is blocked by the inclined windshield surface of the vehicle, so that the contact K ₁ S ′ is opened and no current flows through the coil 44C. Therefore, the solenoid valve 44 is opened, the cylinder is pressurized, and the upper surface drying nozzle 2 moves up. 'Source L ₁ corresponding to the' first photoelectric switch K ₁ other by the rise
When the light passes through, the contact K ₁ S ′ is closed again and the upper surface drying nozzle 2 descends, and thereafter, the upper surface drying nozzle 2 ascends substantially along the windshield surface while repeating this rising and descending.

When the upper surface drying nozzle 2 reaches the position (n) corresponding to the ceiling surface of the vehicle, the second photoelectric switch K ₂
The light of the light source L ₂ corresponding to is blocked by the vehicle ceiling surface,
Since the light of the light source L ₁ ′ corresponding to the other first photoelectric switch K ₁ ′ passes, the contact K ₂ S is closed, the contact K ₁ S ′ is also closed, and the current flows through the coils 42C and 44C. Therefore, the solenoid valves 42 and 44 are excited, and the piston rod 5 is stopped by the stop device 6, so that the upper surface drying nozzle 2 is maintained at the elevating position suitable for the drying process.

When the upper surface drying nozzle 2 reaches the position (L) and comes to face the rear glass surface of the vehicle, the light from the light source L ₂ corresponding to the _second photoelectric switch K ₂ passes therethrough, so that the contact K ₂ S becomes The coil 42C opens and no current flows through the coil 42C. Therefore, the solenoid valve 42 is opened, the stop of the piston rod 5 by the stop device 6 is released, and the upper surface drying nozzle 2 is lowered. When the light from the light source L ₂ corresponding to the second photoelectric switch K ₂ is cut off again due to this lowering, the contact K ₂
S is closed again and the lowering of the upper surface drying nozzle 2 is stopped,
Thereafter, while repeating the lowering and stopping, the upper surface drying nozzle 2 descends substantially along the windshield surface to reach the lower limit position (e).

Then, when the upper frame drying nozzle 2 reaches the position (wa) at the position where the gate-shaped frame 1 is indicated by (D), the ultrasonic detection device 50 provided in the gate-shaped frame 1 moves the rearmost part of the vehicle. Detect. Therefore, the traveling direction of the gate-shaped frame 1 changes from forward to backward. In the case of a return trip, the same operation as in the case of FIG. 6 described above is performed.

FIG. 8 is a flow chart showing the operation of the above-described embodiment of the present invention. In step S ₁ , it is determined whether or not it is a drying process. If it is a drying process, the process proceeds to step S ₃ , and if not, the process proceeds to step S ₂ to perform another process. In step S ₃ , if it is a return trip, it is determined to proceed to step S ₄ , and if it is a forward trip, it is determined to proceed to step S ₁₀ . Step S
_{In step 4} , if the light of the light source L ₁ corresponding to the first photoelectric switch K ₁ is blocked, the process proceeds to step S ₅ , and if it passes, the process proceeds to step S ₆ . In step S ₅ , the upper surface drying nozzle 2
Make a rise. In step S ₆ , the second photoelectric switch K ₂
If the light of the light source corresponding to is blocked, step S
If it is ₇ , the process proceeds to step S ₈ . Step S
_{At 7} , the piston rod 5 is stopped by the stop device 6. In step S _8, the upper surface drying nozzle 2 is lowered. When it is determined not to be finished in step S _9, the process returns to step S _4, repeated action described above.
In the case of the forward stroke, in step S _10, if the go-around and differ only in determining point pass cutoff of light 'source L ₁ corresponding to the' other of the first photoelectric switch K _1, step S ₁₁ to S ₁₅ are those similar to steps S ₅ to S _9.

[0031] Since Thus by the foregoing embodiment the processing step (drying step) was to be carried out either during the forward stroke and during go-around of the portal frame 1, a first photoelectric switch K ₁ for a time inbound Although the first photoelectric switch K ₁ ′ for forward travel is provided, the latter photoelectric switch K ₁ ′ is used when the processing step is performed only during the backward travel, and the processing step is performed only during the forward travel. In the above, the former photoelectric switch K ₁ may be omitted.

Further, according to the above-described embodiment of the present invention, the limit switch 23 which operates when the elevating members 12 and 13 are swung by a predetermined angle or more and outputs a signal for stopping the traveling of the portal frame 1. Is provided. Therefore, when the photoelectric switch, the air circuit, the hydraulic circuit, or the like malfunctions, the upper surface drying nozzle 2 is prevented from coming into contact with the vehicle together with the rotating rollers 30, 30. Therefore, there is no risk of damaging the vehicle body.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various designs can be made without departing from the present invention described in the claims. It is possible to make changes. For example, fluid ejection
Although the upper surface drying nozzle is used as the nozzle, it is also possible to use the upper surface shower nozzle. The present invention can also be applied to the case where the vehicle is run with the gate frame fixed instead of running the gate frame.

[0034]

As described above, according to the present invention, the fluid ejection is performed.
The nozzles when increasing along the inclined window glass surface of the vehicle, when the first photoelectric switch detects the vehicle body surface straight
Runode it is possible to increase the nozzle Chi, the nozzle can be prevented to the effectively abuts the window glass. When lowering the nozzle , the first, second
Since the descending condition is that the photoelectric switch does not detect the vehicle body surface, the first to third photoelectric switches are used as in the conventional device.
Compared to that of the structure to control the descent using three or more detection signals from the switches, the possibility of transmission due to poor was Bruno nozzle of failure of the photoelectric switch is reduced. Furthermore, the first photoelectric switch does not detect the vehicle body surface and the second photoelectric switch
When the photoelectric switch detects the vehicle body surface, the lifting and lowering of the nozzle can be stopped.Therefore, when the nozzle moves along a substantially horizontal vehicle body surface, the frequency of lifting and lowering the nozzle can be reduced as much as possible. Can contribute to the improvement of the durability of the lifting drive system , and the nozzle is a windshield.
When descending along the surface, the second photoelectric switch is
As soon as (Wind glass surface) is detected, the
Since the lowering operation of the
It is possible to effectively prevent the nozzle from colliding with the glass surface.
It Furthermore, during relative movement to one of the frames with respect to the vehicle
The up / down control of the fluid injection nozzle in the first and second photoelectric
The detection error is suppressed as much as possible from the two detection results
Since it can be performed accurately while controlling
Simplification is achieved. As a result, while simplifying the structure of the device and improving the durability, the nozzle can follow the shape of the upper surface of the vehicle without contact, and the occurrence of failure can be avoided as much as possible.

The frame is mounted on the vehicle as in the above embodiment.
The first photoelectric switch used when making relative movement to one side
If only one switch is used, the structure can be further simplified.
In addition, the one first photoelectric switch detects the vehicle body surface.
When you put it out, you can surely raise the nozzle.
Wear.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view of the main part of the embodiment, taken along line 2-2 of FIG.

FIG. 3 is a diagram showing a configuration of a piston rod stop device in the embodiment.

FIG. 4 is a diagram showing an air and hydraulic circuit in the embodiment.

FIG. 5 is a diagram showing a connection between a photoelectric switch as a sensor and a coil of a solenoid valve.

FIG. 6 is a diagram showing a position of an upper surface drying nozzle in a case where a drying process is performed in a backward movement of a gate type frame.

FIG. 7 is a diagram showing a position of an upper surface drying nozzle when a drying process is performed by reciprocating movement of a gate-shaped frame.

FIG. 8 is a flowchart showing the operation of the embodiment.

[Explanation of symbols]

1 Gate-shaped frame as a frame 2 Upper surface drying nozzle as a fluid injection nozzle 4 Cylinder 5 Piston rod 6 Stopping device 60 Control means E Lifting device K ₁ , K ₁ ′ First photoelectric switch K ₂ Second photoelectric switch

Claims (3)

(57) [Claims] 1. An injection capable of injecting a fluid onto an upper surface of a vehicle body of a vehicle
Fluid injection nozzle supported by frame (1) with mouth
(2) and ascending and descending to raise and lower the fluid injection nozzle (2)
A device (E) for connecting the frame (1) and the vehicle.
With the relative movement of the vehicle in the front-rear direction, the fluid injection nozzle
(2) is made to follow the shape of the vehicle body top surface,
In a lifting and lowering operation device for a fluid injection nozzle in a vehicle body cleaning device of a vehicle, the device is below an injection port of the fluid injection nozzle (2) and a vehicle
The frame (1) is arranged on the front side in the relative movement direction with respect to both.
First light that is installed and moves up and down together with the fluid ejection nozzle (2)
Electric switch (K ₁ , K ₁ ′) and its first photoelectric switch
Below (K ₁ , K ₁ ′) and after the relative movement direction
The fluid ejection nozzles, which are arranged at intervals on the respective sides.
(2) A second photoelectric switch (K ₂ ) that moves up and down together with the front
The detection result of the first photoelectric switch (K ₁ , K ₁ ′) and the above
Based on the detection result of the second photoelectric switch (K ₂ )
More becomes location (E) control means for controlling (60), the control means (60), when the first photoelectric switch (K _1, K ₁ ') detects a body surface the fluid ejection Bruno
The cheat (2) is raised and the first photoelectric switch (K
₁ , K ₁ ′) does not detect the vehicle body surface and the second photoelectric switch (K ₂ ) detects the vehicle body surface, the fluid injection nozzle.
(2) to stop the lifting of further said first and second photoelectric switch (K _1, K ₁ '; K ₂₎ prior to lowering the fluid injection nozzle (2) when neither detect the body surface
A lifting / lowering operation device for a fluid injection nozzle in a vehicle body cleaning device of a vehicle, characterized by controlling the lifting / lowering device (E) . 2. The frame (1) on one side of the vehicle
The first photoelectric switch used for relative movement
The flow in a vehicle body cleaning device according to claim 1, wherein the number of (K ₁ , K ₁ ′) is only one.
Lifting device for body injection nozzle . 3. The elevating / lowering device for a fluid injection nozzle in a vehicle body cleaning device according to claim 1, wherein the fluid injection nozzle is a vehicle body upper surface drying nozzle (2).