JPH0295955A - Method and device for cleaning lower part of car - Google Patents

Abstract

PURPOSE:To have fine cleaning of different places of the lower part of a car and make a dolly flat or compact by swinging flushing pipes horizontally in forward strokes caused by elongation and contraction of No.1 cylinder furnished on the dolly, and allowing it to revolve left and right in return strokes with elongation and contraction of No.2 cylinders. CONSTITUTION:In forward strokes No.1 cylinder 18 is in operation, when its operational rod 19 elongates and contracts to cause a pair of flushing pipes 16, 17 to make opening/closing or swinging in the horizontal direction with the aid of a link mechanism 20. Therein injection nozzles 16a, 17a are left facing upward. In return strokes, on the other hand, a dolly 1 begins returning automatically and the operational rod 19 stops where the left and right flushing pipes 16, 17 are positioned parallelly facing the backward direction of the dolly 1, and also in conformity to command from a control device 8 a braking device 28 the link mechanism 20 and the left and right flushing pipes 16, 17 are fixed. Now No.2 cylinders 23, 24 are actuated to put their operational rods 23a, 24b into elongating/contracting motion, and thus the left and right flushing pipes 16, 17 revolve left and right with respect to the axial direction of flushing pipes.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method and apparatus for cleaning the lower part of a motor vehicle, particularly a large motor vehicle such as a bus, a truck, or a dump truck.

``Prior Art'' As a conventional method for cleaning the lower part of an automobile, there is an example proposed in, for example, Japanese Patent Laid-Open No. 60-261756. In this embodiment, two fountain pipes are installed in parallel on a trolley equipped with a travel motor and guided by a guide lobe, and these fountain pipes are driven in the width direction provided on the trolley when the trolley reciprocates under the floor of the automobile. In this method, the trolley is moved horizontally from side to side by a motor, and rotated in the axial direction of the fountain pipe by a swing motor provided on the trolley, thereby washing the lower part of the automobile.

However, this embodiment had the following drawbacks.

■The cleaning method is exactly the same pattern for the outbound and return trips, so
So-called "unevenness" occurs in cleaning.

■When reciprocating the fountain pipe in the width direction of the cart, and when rotating the fountain pipe itself in the circumferential direction, multiple motors provided on the cart are used, so the cart can be made more compact. In addition, it requires multiple configurations and is expensive.

■In order to increase the cleaning effect, multiple spray nozzles must be installed in the fountain pipe. Therefore, the amount of purified water to be discharged increases and the discharge pressure must also be increased, so a high-pressure hot water washer designed specifically for large vehicles must be used.

In addition, as a lower part cleaning device for automobiles, for example,
One example is proposed in Japanese Patent No. 1-181747.

In this embodiment, a plurality of fountain pipes each having a plurality of injection nozzles are supported in an intersecting manner on the top of a bogie that runs under the floor of an automobile, and these fountain tubes are oscillated by a motor installed inside the bogie. It is rotated by a mechanism. However, even in this embodiment, the cleaning pattern is exactly the same in both directions as in the previous embodiment, the height of the cart cannot be kept small, the number of injection nozzles cannot be reduced, etc. It had drawbacks.

``Object of the present invention'' In view of the above-mentioned conventional drawbacks, the present invention has been developed to change the cleaning pattern on the reciprocating path of the cart, thereby making it possible to more precisely clean the required areas, and to flatten the cart. Alternatively, to obtain an inexpensive method and apparatus for cleaning the lower part of a car, which can be made sufficiently compact, and which can also use a high-pressure hot water washer that is used for washing ordinary cars, even for large cars. be.

"Means for Solving the Object" In order to achieve the above object, the method of the present invention provides a method for cleaning the lower part of an automobile in which a trolley that sprays washing water reciprocates under the floor of the automobile to wash the lower part of the automobile. In this case, the left and right water fountain pipes each having an injection nozzle at their tip swing in the horizontal direction due to the expansion and contraction movement of the operating rod of the first cylinder provided on the truck, whereas on the return trip, the water fountain pipe does not swing in the horizontal direction. It is characterized in that it rotates left and right with respect to the axial direction of the fountain tube by the expansion and contraction of the operating rod of the second cylinder that is integrally attached to the fountain tube.

Further, the device of the present invention includes a truck that is reciprocated under the floor of a car via a cable member by a drive motor installed externally, and an operating rod of a first cylinder provided on the truck in a horizontal direction. It is characterized by consisting of left and right fountain tubes that swing to the left and right, and second cylinders that are integrally attached to these fountain tubes and rotate each fountain tube left and right with respect to the axial direction of the fountain tubes.

"Example" Examples will be described with reference to the drawings.

(Example of Method) FIG. 1 shows a method for cleaning the lower part of an automobile as an example of the present invention. In this method, as shown in FIGS. 1 and 2, a trolley 1 that sprays washing water reciprocates under the floor of a large vehicle 2, such as a bus or a truck, to wash the lower part of the vehicle 2. The truck 1 reciprocates while being guided by one guide rail 3 laid on the floor. Trolley 1
does not run on its own, but is pulled by a cable member 4 such as a lobe or chain. The cable members 4 are wound around index wheels 5.6 installed at the front and rear of the automobile 2, respectively, and each end is attached to the front and rear of the truck 1, respectively. One of the index reels is connected to the output shaft of a drive motor 7 for driving the truck. The drive motor 7 is suitably arranged outside the stand TB1 together with various reel sets, and its speed etc. are controlled by a control device 8 in which various programs are incorporated. A cleaning hose 10 for guiding cleaning water from a high-pressure hot water washer 9 is attached to the truck 1 via a hose reel 11.

Further, an air hose 12 and a power supply cable 13 are attached to the truck 1 via reels 14 and 15, respectively. Furthermore, a pair of fountain pipes 16.17 are supported in parallel on the trolley 1 with a required spacing, and one injection nozzle 16a117a is fixedly provided at the tip of each fountain pipe 16.17. ing. The pair of fountain pipes 16 and 17 are opened, closed, or swung horizontally via a link mechanism 20 by the expansion and contraction of the operating rod 19 of the first cylinder 18 provided on the truck 1. The opening/closing or swinging angle of the pair of fountain pipes 16.1T can be changed by a plurality of sensing sensors 21 that sense the stroke of the operating rod 19 appropriately attached to the outer periphery of the first cylinder 18. These sensing sensors 21 are electrically connected to the aforementioned control device @8, whereby the plurality of electromagnetic valves 22 for the first cylinder 18 are opened and closed.

Further, a second cylinder 23.24 is integrally attached to each of the pair of fountain pipes 16.17. 2nd cylinder 2
3.24 is smaller than the first cylinder 18 described above, and a sensor 25 for sensing the stroke of each operating rod 23a, 24a is provided on the outer periphery of each cylinder. These sensing sensors 25 are also similar to the sensing sensor 2.
Similarly to 1, the tIII control device 8 is electrically connected to I7? c continued,
As a result, each 1 m valve 26 of the second cylinder 23, 24 opens and closes. Therefore, the pair of fountain pipes 16.17 are connected to the operating rods 23a, 24 of the respective second cylinders 23.24.
Due to the expansion and contraction of a, it rotates left and right with respect to the axis of the fountain pipe. These rotation angles can be changed by the sensing sensor 25. In addition, the trolley 1 is provided with a plurality of limit switches 21 that detect the position of the tires 29 of the automatic*2 and electrically connect to the control device 8.
A brake device 28 is also provided to stop the pair of fountain pipes 16, 11 at predetermined positions and substantially parallel to each other.

Therefore, in the cleaning method of the present invention, when the drive motor 7 is driven, the trolley 1 is pulled by the cable member 4 and guided by the guide rail 3, and moves back and forth under the floor of the automobile 2 as shown in FIG. Run.

Therefore, the cleaning pattern of the present invention is different between the outward path X and the backward path Y.

First, in the outward path X, the first cylinder 18 is driven, and when its operating rod 19 expands and contracts, the pair of fountain pipes 16 and 17 open, close, or swing in the horizontal direction via the link mechanism 20, respectively. In this case, the injection nozzles 16a, 17a remain directed upward. The swing angle of the fountain pipes 16 and 17 is small at the axle and tire portions A, while it is large at the other portions B below the body.

Therefore, until the trolley 1 is automatically returned by the control device 8, the swing angles of the pair of fountain pipes 16 and 17 change from large b to small a to large b to small a1. Changes in the magnitudes a and b of this swing angle are determined by the limit switch 27 detecting the position of the tire 29 of the automobile 2 and the detection sensor 21 detecting the stroke of the operating rod 19 of the first cylinder 18. This is done by opening and closing the valve 22.

Next, on the return trip Y, when trolley 1 starts to return automatically, the first
The operating rod 19 of the cylinder 18 stops when the left and right water fountain pipes 16, 17 are located parallel to the backward movement direction of the truck 1 as shown in FIG. is activated, and the link mechanism 20 and the left and right fountain pipes 16 and 17 are fixed. This time, the second cylinders 23, 24 are driven. When the second cylinders 23 and 24 are respectively driven and the operating rods 23a124b extend and contract, the left and right fountain tubes 1G and 17 rotate left and right with respect to the axial direction of the fountain tubes. In this case, since the injection nozzles 16a and 17a are fixedly provided in each of the fountain pipes 16 and 17, they rotate from side to side together with the fountain pipes. However, fountain pipe 1
As shown in FIG. 1, the turning angle of 6.17 is opposite to the outward path X, and is smaller in the lower part B of the body other than the axle and tire parts, while it becomes larger in the axle and tire parts A.

Therefore, after the trolley 1 automatically returns until it returns to its original position, the rotation angles of the pair of fountain pipes 16 and 17 change as follows: small a1 large b, small a1 large t), zJ) a . Note that this change in rotation angle is made by the limit switch 27 that detects the position of the automobile tire 29, the detection sensor 25 that senses the stroke of each operating rod 23a124b, etc., as in the case of the change in the swing angle described above. Ru.

(Example of Apparatus) Next, a lower part cleaning apparatus for an automobile as an example of the present invention will be described. Since this apparatus is used in the embodiment of the method described above, the same reference numerals are given to the same parts in terms of structure, and some redundant explanations will be omitted.

In Figures 1 to 7, reference numeral 1 denotes a trolley that reciprocates under the floor of a large automobile 1 via a cable member 4 driven by a drive motor 7 installed outside. It is formed in a mold and has a plurality of small running wheels 30 at appropriate locations, and is guided by an idle rail 3 as a guide member laid on the floor surface. Reference numerals 16 and 17 denote a pair of left and right water fountain pipes 16 and 17 which are horizontally supported on the trolley 1 at a required interval, and each of these water fountain pipes 16 and 17 has one injection nozzle 16a and 17a at its tip. Each is fixedly provided. Reference numeral 18 denotes a first cylinder that is installed horizontally in the front part of the truck 1 and opens and closes or swings the left and right water fountain pipes 16 and 17 in the horizontal direction via a link mechanism 20 by the expansion and contraction movement of the operating rod 19. A plurality of sensors 21 are provided on the outer periphery of the cylinder 18 to detect the stroke of the operating rod 19. The link □ structure 20 is connected to the operating rod 1 of the first cylinder 18 as shown in FIGS. 3 and 4.
A disc-shaped rotating plate 2 is pivotally supported on the trolley 1 so as to be able to rotate in the horizontal direction via a pivot 20a connected to the rotating plate 9.
0b, and left and right links 20c and 20d that connect this rotary plate 20b and left and right fountain pipes 16 and 17, respectively. Reference numeral 28 denotes a brake device that is provided close to the rotary plate 20b of the link assembly 20 and fixes the left and right water fountain pipes 16, 17 at desired positions.
Brake plate 2 appropriately pivoted to truck 1 as shown in the figure
8a, and a solenoid valve 28b provided on the truck and electrically connected to the control device 8 so as to push up and rotate the brake plate 28. 23.24 are integrally attached to the left and right fountain pipes 16.17, respectively, and each fountain pipe 1G,
17 is a small second cylinder that rotates left and right with respect to the axial direction of the fountain tube.These cylinders 23.24 are connected to each fountain tube 16.1 through a support plate 31, respectively, as shown in FIG.
1 is provided. Each fountain pipe 16.17 is attached to the tip of the operating rod 23a, 24b of each cylinder 23.24.
One end of the connecting rod 32 connected to the connecting rod 32 is pivotally supported. Note that the other ends of these connecting rods 32 are fixedly attached to the ends of the fountain pipes 16 and 17, respectively.

In addition, the left and right second cylinders 23 and 24 have the first cylinder 1.
Similarly to 8, a detection sensor 25 is provided to detect the flow of the operating rod 23a124a.

In the above configuration, the cleaning pattern of rocking and rotating the pair of fountain pipes 16 and 17 performed while the trolley 1 is reciprocating is explained in the embodiment of the method, and will therefore be omitted.

"Effects of the Present Invention" As is clear from the above description, the present invention has the following effects.

(1) On the outbound trip, the left and right water fountain pipes open, close, or swing horizontally, while on the return journey, the left and right water fountain pipes rotate in the direction of their axis. The area under the floor can be thoroughly and evenly cleaned.

(2) In the case of (1) above, in the case of an example in which the horizontal swing angle and the axial rotation angle of the left and right fountain pipes are changed, maintenance work on the tire part, axle, etc. As a result, you can carefully clean the areas that you mainly want to clean or areas that have a relatively large amount of dirt.

(3) Instead of using a drive motor to rotate or swing the fountain pipes as in the past, the opening and closing operations of the left and right fountain tubes are performed by the first cylinder, while their rotational movements are performed by the second cylinder. ing.

Therefore, the height of the truck with the injection nozzle can be made lower, so that the truck can easily be maneuvered along the center line of a large vehicle and under its floor.
Furthermore, there is no need to lift up the car or dig a bit into the floor in order to run the trolley.

(4) If the cleaning patterns on the forward and return trips are changed as in (1) and (2) above, there will be as many as four types of cleaning modes.

Therefore, the cleaning effect is significantly enhanced, and it is only necessary to provide one injection nozzle at each end of the left and right fountain pipes. As a result, the pump can be connected to a typical high-pressure hot water washer used to wash regular passenger cars, reducing the cost of the washing system.

In this regard, in the case of conventional cleaning methods and devices for large vehicles, in order to obtain a satisfactory cleaning effect,
That is, a large pump and motor had to be used to increase the amount of water to be injected and the water pressure, and it was impossible to use the in-shell high-pressure hot water washer as it was.

(5) The individual installation work is easy.

[Brief explanation of drawings]

1 to 6 are explanatory diagrams showing embodiments of the present invention. In detail, FIGS. 1 and 2 are explanatory diagrams showing the overall outline, FIG. 3 is an explanatory diagram of the main parts from a plane, FIG. 4 is an explanatory diagram showing the swinging state of the fountain pipe, and FIG. The figure is an explanatory diagram showing the rotating state of the fountain pipe, and FIG. 6 is an explanatory diagram showing the brake device. 1... Trolley, 3... Guide rail, 4
... Index member, 7... Drive motor, 8...
・Control device, 16.17... Fountain pipe, 16a
, 17a... Injection nozzle, 18... First cylinder, 19... Operating rod, 20
... Link mechanism, 21.25 ... Sensing sensor 22, 26 ... Solenoid valve, 23.24 ... Second cylinder, 27 ... Limit switch, 28 ...
Brake device, 31... Support plate, 32...
・Connecting rod, X...outward trip, Y...return trip. Patent applicant Nissan Motor Sales Co., Ltd. Jidosha Seiki Kogyo Co., Ltd. Agent

Claims (1)

[Claims] 1) A trolley that sprays washing water reciprocates under the floor of a car,
In the method for washing the lower part of a car, on the outward journey, the left and right water fountain pipes each having a spray nozzle at their tip swing in a horizontal direction due to the expansion and contraction movement of an operating rod of a first cylinder provided on the trolley; On the other hand, on the return trip, the fountain tube does not swing horizontally, but rotates left and right with respect to the axial direction of the fountain tube due to the expansion and contraction of the operating rod of the second cylinder that is integrally attached to the fountain tube. Characteristic method for cleaning the lower part of a car. 2) In claim 1, the swing angle of the left and right water fountain pipes on the outward journey is small in the tire portion of the automobile, whereas the swing angle of the left and right fountain pipes on the outward journey is small by the stroke sensing means of the operating rod provided in the first cylinder and the second cylinder, respectively. The rotation angle of the left and right water fountain pipes on the return trip is large under the other parts of the body, whereas the rotation angle of the left and right fountain pipes is large under the car tire.
A method for cleaning the lower part of an automobile, characterized in that the lower part of the car is smaller than the rest of the body. 3) A truck that is reciprocated under the floor of the car via a cable member by an externally installed drive motor, and left and right wheels that are installed on this truck and that swing in the horizontal direction by an operating rod of a first cylinder provided on the truck. A lower part cleaning device for an automobile, comprising: fountain pipes; and a second cylinder, which is integrally attached to each of these fountain pipes and rotates each of the fountain pipes left and right with respect to the axial direction of the fountain pipes.