JPH0438255A - Top brush device in car washer - Google Patents

Abstract

PURPOSE:To prevent a top brush from being dropped on a loading space from the ceiling surface of a cab by regulating the descent of the top brush with a stopping device installed in a cylinder at a time when the top brush, so far washing the cab being situated in front of a vehicle, is reached to a front end of the loading space to be situated in the rear of the cab. CONSTITUTION:In opposition to the front of a truck V to be washed, a portal frame 1 is stopped at a start position S on a travel rail 39. At this time, a rocker shaft 6 is kept in an upper limit position 6c, and three-port two-position solenoid selector valve 108 is made into nonoperation and a check valve 109 is opened while another three-port two-position solenoid selector valve 106 is operated, driving a cylinder 19, and a top brush 7 is held in a left upper limit position (A). On the other hand, the rocker shaft 6 is lowered from the upper limit position 6c to a lower limit position 6a, while the said valve 106 is made into nonoperation, lowering the top brush 7 with its own gravity. When this brush 7 is reached to a lower position (B), the valve 108 operates, making the check valve 109 perform its own function, thus any descent of the top brush 7 is regulated.

Description

Detailed Description of the Invention A1 Objective of the Invention (1) Industrial Application Field The present invention relates to a vehicle cleaning device in which an upper brush that is driven up and down by a cylinder is provided on a gate-shaped frame that moves relative to the vehicle. The present invention relates to a top brush device.

(2) Conventional technology Conventionally, a vehicle cleaning device that cleans a vehicle using an upper brush provided on a gate-shaped frame is known that is capable of cleaning a truck that has a step between the driver's cab and the loading platform. (Refer to Utility Model Publication No. 43-25221). In order to prevent the top brush that has cleaned the driver's cabin of the vehicle from suddenly falling from the ceiling of the driver's cabin onto the loading platform when it reaches the front end of the loading platform, this vehicle cleaning device has a
A brake device is provided on the rotating shaft of the cross arm that supports the upper brush so that it can move up and down.

(3) Problems to be Solved by the Invention However, general-purpose vehicle cleaning devices for cleaning various vehicles such as passenger cars, wagons, pan-type cars, and trucks use cylinders to actively drive the upper brush up and down. Therefore, if the conventional brake device is added to such a vehicle washing device, the structure of the entire device may become complicated.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a top brush device for a vehicle cleaning device that has a simple structure and is capable of cleaning a vehicle that has a step between the driver's cab and the loading platform. .

B1 Structure of the Invention (1) Means for Solving the Problems In order to achieve the above object, the top brush device in the vehicle cleaning device of the present invention is provided with a top brush provided on a gate-shaped frame so as to be movable up and down, and which connects the driver's cab and the loading platform. In a vehicle cleaning device that cleans a vehicle that has a step between the vehicle, in order to prevent the top brush that has cleaned the top surface of the driver's cab from falling onto the loading platform,
The present invention is characterized in that a stopping means is provided on the cylinder that drives the upper surface brush up and down.

(2) Effect According to the present invention having the above-described configuration, when the top brush used to clean the driver's cab located at the front of the vehicle reaches the front end of the loading platform located at the rear of the driver's cab, it is applied to the cylinder. Since the provided stop device restricts the upper brush from descending, the upper brush is prevented from falling from the ceiling of the driver's cab onto the loading platform. Since the stop device is provided on the cylinder that drives the upper brush up and down, the entire device can be made compact.

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

1 to 4 show a first embodiment of the present invention, in which FIG. 1 is a front view of the vehicle washing device, FIG. 2 is a side view of the same, and FIG.
The figure is a plan view of the lower side brush, and FIG. 4 is a hydraulic circuit diagram of the stopping means.

As shown in FIGS. 1 and 2, a pair of left and right support shafts 2.2 are rotatably supported at the center of both measuring sections of the gate-shaped frame 1. -2 has sprocket 3.
A pair of support arms 4.4 to which 3 is fixed are rotatably supported. A swing shaft 6.6 fixed to the middle part of the pair of swing arms 5, 5 is rotatably supported at the tip of each support arm 4.4.
Both ends of a brush support shaft 8 to which an upper brush 7 is fixed are rotatably supported at the tip of the swinging arm 5.5.

A balance weight 9 is fixed to the upper end of one of the swing arms 5, and a motor 10 with a speed reducer that also serves as a balance weight is fixed to the upper end of the other swing arm 5. The upper brush 7 is rotationally driven by connecting a sprocket 11 fixed to the output shaft of the motor 10 with a speed reducer and a sprocket 12 fixed to the brush support shaft 8 by a chino 13.

Sprocket (14) fixed to the outer end of the swing shaft 6.6
．． 14 and a sprocket with the same number of teeth fixed in the middle of the support shaft 2.2) 15.15 are connected by a chino 16.16, and the cylinder arm 17 fixed to the outer end of one support shaft 2 has a gate type sprocket. Cylinder 1 with one end pivotally supported on frame 1
The other end of 9 is connected. Therefore, as shown in FIG. is transmitted to rotate the swinging arm 5 so that the upper brush 7 rises. Further, when the cylinder 19 is made inactive, the upper brush 7 swings downward due to its own weight. At this time, the stopper arm 18 fixed to the opposite side of the cylinder arm 17 of the support shaft 2 comes into contact with the stoppers 20 and 21 provided on the portal frame 1, thereby causing the swing arm 5 to swing up and down. Range is limited.

Furthermore, a mounting plate 23 having a magnet 22 is attached to the other support shaft 2.
is fixed to the reed switch 2 provided on the gate-shaped frame 1.
4, it is detected that the upper brush 7 has reached the upper limit position. Furthermore, the outer end of this support shaft 2 is connected to a rotary encoder 25 that detects the rotation angle of the swing arm 5. This rotary encoder 25 and the reed switch 24 constitute a swing angle detection device H, Detects the rotation angle of 5,5.

A synchronized shaft 2 rotatably supported on the top of a gate-shaped frame 1
A sprocket) 27.27 is fixed to both ends of the sprocket 6, and these sprockets) 27.27 are attached to an endless chain 28.
The swing arm 4.4 is connected to the sprockets 3, 3 which are integral with the swing arm 4.4. Further, the sprocket 29 fixed to one end of the synchronized shaft 26 is connected via a chino 31 to a sprocket 30 of a motor 32 with a self-braking worm reduction gear provided on the portal frame 1. Therefore, by driving the motor 32 with a speed reducer, the tuned shaft 26 is rotated, and the pair of support arms 4, 4 connected to the tuned shaft 26 are rotated in synchronization with each other. At this time, the magnet 33 of the mounting plate 34 fixed to the outer end of the tuning shaft 26 and the gate-shaped frame 1
Three reed switches 35A, 35B, 3 arranged in
Due to the action of 5C, the 21st! The lower limit position (8a), intermediate position (6b), and upper limit position (6C) of the swing shaft 6 at I are detected.

As shown in FIG. 2.3, a pair of left and right lower side brush devices are provided on both sides of the portal frame 1, respectively. Since these pair of lower side brush devices have the same structure, only one of them will be described.

A vertical shaft 51 rotatably supported on the side of the gate-shaped frame 1
An opening/closing arm 52 is fixed to the opening/closing arm 52, and a lower side brush support shaft 54 to which a lower side brush 53 is fixed is rotatably supported at the tip of the opening/closing arm 52. A motor 55 with a reducer is fixed to the upper part of the opening/closing arm 52.
The lower side brush 53 is rotationally driven by connecting a sprocket 56 fixed to the output shaft of the brush and a sprocket 57 fixed to the brush support shaft 54 via a chino 58. A cylinder arm 59 and a spring arm 60 are fixed to the vertical shaft 51, and a cylinder 61 whose one end is pivotally supported by the portal frame 1 is connected to the cylinder arm 59. Further, a spring 62 whose one end is supported by the portal frame 1 is connected to the spring arm 60.

Therefore, when the cylinder 61 is operated, the lower side brush 5
3 moves away to the open position f[(53a) shown by the two-dot chain line in FIG. Furthermore, when the cylinder 61 becomes inactive, the left and right lower side brushes 53 move toward each other toward the closed position (53b) shown by the solid line by the elastic force of the spring 62, and come into contact with the lower side surfaces of the automobile.

The positional relationship between the above-mentioned top brush device and lower side brush device is such that when the swing shaft 6 of the top brush 7 is at the lower limit position (6a), the top brush 7 is 20 degrees forward from directly below the swing shaft 6.
If the lower side brush 53 is oscillated by more than 1°, the members of the lower side brush device and the upper brush device will not interfere with each other even if the lower side brush 53 moves closer to each other, and the lower side brush 53 will not interfere with the members of the upper side brush device.
When the upper brush 7 is at the position (53a), the structure is such that the members of both devices do not interfere even if the upper brush 7 descends to the lowest point.

A side brush device is provided at the rear of the portal frame 1. This side brush device has a pair of carts 72 that can move toward and away from each other on a guide rail 71 supported by a portal frame 1 so as to be able to swing around a shaft 70. The carts 72 are driven by a motor 73. A side brush 40 is rotatably supported. In addition, the gate-shaped frame 1 is equipped with a side drying nozzle 41 and a top drying nozzle 42, and has sliding wheels 37, 37 rotated by a traveling drive*ll36.
It travels back and forth on the traveling rail 39.39 by the linked wheels 38.38.

A control device 101 provided on the gate-shaped frame 1 is provided with a start button 102 that is pressed to start washing a vehicle, and a truck button 103 that is pressed when washing a truck that has a step between the driver's cabin and the loading platform. It will be done.

FIG. 4 shows a hydraulic circuit for stopping means for the cylinder 19. The cylinder 19, which swings the swinging arm 5.5 up and down, is connected to a high-pressure air source 105 via a liquid tank 104 that converts air pressure into liquid pressure. and its liquid tank 10
A 3-point, 2-position electromagnetic switching valve 106 is interposed between the liquid tank 104 and the air source 105, and another 3-point, 2-position electromagnetic switching valve 108 is interposed between the liquid tank 104 and the cylinder 19.
A pilot-operated check valve 109 that is operated by is installed. Therefore, when the 3-point/2-position electromagnetic switching valve 108 is inactive, liquid is transferred to the liquid tank 1 via the check valve 109.
04 and the cylinder 19 in any direction.
8 is activated, the check valve 109 restricts the movement of liquid from the cylinder 19 to the liquid tank 104. Further, another liquid tank 110 whose air side is open is connected to the rod 191 side of the cylinder 19.

Next, the effects of the first embodiment of the present invention will be mainly explained in the ninth! !
This will be explained with reference to 1.

The gate-shaped frame 1 is stopped at a starting position S at the left end of the running rail 39, facing the front of the truck (2) to be cleaned. At this time, the swing shaft 6 is held at the upper limit position (6C), the 3-point, 2-position electromagnetic switching valve 108 is deactivated, the check valve 109 is opened, and the 3-point, 2-position electromagnetic switching valve is opened. 106 to drive the cylinder 19, the upper brush 7 is held at the left upper limit position (a). From this state, when the track button 103 and start button 102 of the control device 101 are pressed, the motor 32 with reducer rotates and the swing shaft 6 moves from the upper limit position (6C) to the lower limit position (6C).
a), and the 3-point 2-position solenoid switching valve 1
06 becomes inactive, and the upper brush 7 moves to the lower limit position (
(b) Descend toward the target. When the swing angle detection device H detects that the upper brush 7 has reached the lower limit position (b), the 3-bot 2-position electromagnetic switching valve '108 is activated to cause the check valve 109 to function. Thereby, the upper surface brush 7 is in a state where it can rise and its descent is restricted. Note that if the center of gravity of the upper brush 7 including the swing arm 5.5 does not coincide with the swing axes 6, 6, the upper brush 7 may vibrate up and down when it stops descending at the lower limit position (b). However, by connecting the rod 191 side of the cylinder 19 to the liquid tank 110, vertical vibration of the upper brush 7 is prevented.

When the gate-shaped frame 1 is moved in the right direction from this state,
The upper brush 7 that has come into contact with the truck V at the position (c) gradually rises due to the reaction force received from the vehicle body, and when the swing angle detection device H detects that the angle of the swing arm 5 exceeds 30°, it swings. The moving shaft 6 is driven upward to the intermediate position (6b), and the upper brush 7 reaches the position (d). As the gate-shaped frame 1 moves further, the upper brush 7 cleans the upper surface of the cab of the truck V, and eventually reaches the boundary position (E) between the cab and the loading platform. At this time, the upper brush 7 tries to fall from the ceiling of the driver's cab onto the loading platform due to gravity, but as mentioned above, the check valve 109 is closed because the 3-point/2-position electromagnetic switching valve 108 is operating. This action prevents the fluid from moving from the cylinder 19 to the liquid tank 104, and the upper brush 7 is held at the height (e).

Then, when the upper brush 7 reaches the (to) position, the forward movement of the portal frame 1 and the rotation of the upper brush 7 are stopped.

Incidentally, in parallel with the cleaning of the upper surface of the truck V by the above-mentioned upper surface brush 7, it goes without saying that the side brushes 40, 40 and lower side brushes 53, 53 clean the side surfaces of the truck V.

FIG. 5 is a hydraulic circuit diagram of a stopping means showing a second embodiment of the present invention.

In this embodiment, a 2-point, 2-position switching valve 107 is provided in place of the check valve 109 of the first embodiment, and a valve 107 is connected in parallel and in series with the 2-point, 2-position switching valve 107. It is characterized by the arrangement of a throttle 111 and a check valve 112.

In this embodiment, similarly to the previous embodiment, the 3-point, 2-position electromagnetic switching valve 108 is deactivated, and the 2-point, 2-position switching valve 10
If 7 is opened, the cylinder 19 can be freely expanded and contracted, and the upper brush 7 can be raised and lowered. Also, 3 points and 2
When the position solenoid switching valve 108 is operated and the 2-bot 2-position switching valve 107 is closed, the check valve 112 closes the cylinder 1.
9 to the liquid tank 104 is regulated to prevent the upper brush 7 from descending, and the liquid tank 1
Fluid is allowed to move from the cylinder 104 to the cylinder 19, and the upper brush 7 can be raised by a reaction force from the vehicle body or by the operation of the 3-point/2-position electromagnetic switching valve 106.

Note that when stopping the lowering of the upper brush 7 at the lower limit position (b), in addition to the action of the liquid tank 1100, the check valve 1
Due to the damping effect of the liquid passing through the aperture 111 connected in series with the brush 12, the vertical vibration of the upper brush 7 is more effectively prevented.

6 to 8 show a third embodiment of the present invention, in which FIG. 6 is a hydraulic circuit diagram of the stopping means, and FIGS. 7 and 81.
! 1 is a cross-sectional view of the locking mechanism of the cylinder.

As shown in FIG. 6, a locking mechanism is provided at the lower end of the cylinder 19 to lock the rod 191 and fix the position of the upper brush 7, and between this locking mechanism and the air source 105. There is a 3-point 2-position solenoid switching valve 11.
3 is interposed. In addition, the cylinder 19 and the air source 105
A 3-point/2-position electromagnetic switching valve 106 and a liquid tank 104, which are the same as in the previous embodiment, are interposed between them, and a liquid tank 1 for vibration prevention is installed on the cylinder 190 rod 191 side.
10 are connected.

Next, the structure of the locking mechanism will be explained based on FIGS. 7 and 8. The cylinder 190 rod 191 is surrounded by a cylindrical casing 114 fixed to the lower end of the cylinder 19, and a cylindrical casing 114 is formed inside the cylinder 190. Cylinder chamber 11
Inside the rod 19. A brake piston 115 through which the brake piston 115 passes through and a stop ring 116 are arranged in an overlapping state. An air chamber 1143 to which high-pressure air is supplied via a bow 1142 is defined at the upper part of the brake piston 115, and a fulcrum 117 is protruded from the upper part of the air chamber 114 on the side opposite to the bow 114s. Ru. Further, a brake spring 118 is compressed on the lower surface of the retaining ring 116 on the opposite side from the fulcrum 117, and its elastic force moves the brake piston 1 and the retaining ring toward the fulcrum 117.
It swings around 17.

According to this embodiment, when high pressure air is supplied to the air chamber 114 with the 3-point/2-position electromagnetic switching valve 113 inactive, the brake piston 115 and the stop ring 116 are The rod 191 of the cylinder 19 is in the horizontal position shown in FIG. 7 and can freely expand and contract.

On the other hand, when the 3-point/2-position electromagnetic switching valve 113 operates, the air chamber 114. The high-pressure air inside is discharged, and the resilient force of the brake spring 118 causes the brake piston 115 and the retaining ring to swing into the inclined position shown in FIG. As a result, rod 19. Even if the rod 19. tries to retract upward, the rod 19. The frictional force acting between the rod 19. is locked in that position. However, when attempting to extend the rod 191 downward by operating the 3-point/2-position electromagnetic switching valve 106,
The inclination of the retaining ring 116 is reduced by the frictional force received from the rod 19. is allowed to fall.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-mentioned embodiments, and various small design changes can be made without departing from the scope of the present invention as set forth in the claims. It is possible.

For example, the throttle 111 in the second embodiment may be either a fixed throttle or a flow rate control valve. Also, the third
In the embodiment, the rod 19. of the cylinder 19. In order to raise the upper brush 7 by contracting it upward, the locking mechanism may be installed upside down.

C0 Effects of the Invention As described above, according to the present invention, when the top brush that cleans the driver's cab located at the front of the vehicle reaches the front end of the loading platform located at the rear of the driver's cab, the stop provided on the cylinder Since the lowering of the upper brush is regulated by the action of the device, the upper brush is prevented from falling from the ceiling of the driver's cab onto the loading platform.

Since the stopping device is directly provided on the cylinder that drives the upper brush up and down, the entire device can be made more compact than in a case where the stopping device is provided separately.

[Brief explanation of drawings]

Figures 1 to 41! 1 shows the first embodiment of the present invention, FIG. 1 is a front view of the vehicle washing device, FIG. 2 is a side view of the same,
FIG. 3 is a plan view of the lower side brush, FIG. 4 is a hydraulic circuit diagram of the stopping means, FIG. 5 is a hydraulic circuit diagram of the stopping means according to the second embodiment of the present invention, and FIGS. This shows a third embodiment of the invention, and FIG. 6 is a hydraulic circuit diagram of the stopping means, and FIG.
! 1 and 8 are cross-sectional views of the cylinder locking mechanism, and FIG. 9 is an explanatory diagram of the operation. 1... Gate-shaped frame, 7... Top brush, 19...
・Cylinder, ■・・・Truck (vehicle)

Claims (1)

[Claims] A top brush (
7) In the vehicle cleaning device for cleaning a vehicle (V) having a step between the driver's cab and the loading platform, in order to prevent the upper surface brush (7) that has cleaned the upper surface of the driver's cab from falling onto the loading platform, A top brush device for a vehicle washing device, characterized in that a cylinder (19) for driving the top brush (7) up and down is provided with a stopping means.