JPH0438611B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for spraying a cleaning liquid onto an object to be cleaned, such as a contaminated vehicle, and automatically wiping the object to be cleaned.

Generally, when cleaning various types of car bodies, brushing is performed while continuously discharging cleaning liquid (in most cases water), or jetting cleaning liquid from a nozzle and spraying the energized cleaning liquid onto the object to be cleaned. Cleaning is in progress.

By the way, the former method can sufficiently clean contaminated areas, but it is difficult to wipe off areas with many protrusions with a brush, which requires manpower and time, and has the drawback that it may damage some objects to be cleaned. . In addition, since the latter can be cleaned by remote control without touching the object to be cleaned, the surface of the object to be cleaned can be easily cleaned even if there are obstacles such as protrusions without damaging the surface. However, the cleaning power is not as strong as wiping with a brush, and in order to increase the cleaning power, it is necessary to increase the water jet power. As a result, the object to be cleaned is subjected to strong surface pressure, making it unsuitable for cleaning aircraft bodies, for example, where this surface pressure is limited. There is a strong desire to develop a highly efficient cleaning device that does not require manual labor.

In view of the above-mentioned circumstances, the present invention has been devised to automatically and efficiently wipe away the contaminated parts of the object to be cleaned, which are sprayed with the cleaning liquid, one after another, while jetting cleaning liquid with a relatively weak pressing force through remote control by an operator. The purpose is to provide a cleaning device, the gist of which is to attach the proximal end of a flexible tube whose tip is cut into tufts to the tip of a nozzle that spouts a multiphase flow of liquid and gas. Forming a single tool, this cleaning tool alone,
In addition to arranging multiple pieces in the same direction and in parallel,
A drive mechanism that moves these forward and backward together,
A cleaning tool is provided with a sensor that detects the distance between the cleaning surface of the object to be cleaned and adjusts the position of the drive mechanism, and the cleaning tool is arranged in multiple rows in the vertical and horizontal directions, facing the same direction. The cleaning device includes a group of cleaning tools.

The present invention will be explained below with reference to the drawings.

1 to 7a and 7b show an embodiment of a cleaning device according to the present invention. The cleaning equipment is
As shown in the perspective view in Figure 1, there is a truck A that can run and steer freely, a column B that is vertically attached to the truck A and can be expanded and contracted in the vertical direction, and a body that protrudes forward and has a body part that is attached to the column B. A first arm C is attached to the tip of the first arm C and is extendable and rotatable in the vertical direction. a second arm D that can freely pivot upward approximately about the central axis of the second arm D, a third arm E that projects forward and whose base is attached at right angles to the tip of the second arm D, and a tip of the third arm E. The washing part F is attached to the washing part F, the back part of which can be raised and raised freely, and the washing part F which is attached to the back part so that it can swing freely in the left and right directions.

The truck A is equipped with a power unit 1 that drives various parts, and an engine 2 that serves as a power source for the power unit. Further, the support column B is driven to expand and contract by a built-in hydraulic cylinder (not shown), and the upper end of a rail 3 provided along the support column B is attached to the tip end of the column B. A driver's cab 4 is attached to the rail 3 so as to be movable in the vertical direction. The operator's cab 4 houses an operating device for adjusting the drive mechanism of each part of the cleaning device and for driving and steering the trolley.

Further, the first arm C is pivoted to a bracket 5 provided at the tip of the support column B, and is connected to a hydraulic cylinder 6.
It is rotatably driven in the vertical direction by a hydraulic cylinder (not shown), and is also driven to extend and contract by a built-in hydraulic cylinder (not shown). Also, the second arm D
is rotatably attached to the tip of the first arm, is driven upward by a pinion gear mechanism (not shown), etc. driven by a hydraulic motor, and is driven by a built-in hydraulic cylinder (not shown). It is designed to be driven for expansion and contraction by the

Further, the connection portion between the third arm E and the cleaning section F is constructed as shown in a plan view and a side view in FIGS. 2a and 2b. That is, a bracket 7 is attached to the tip of the third arm E. A base portion of a connecting member 8 is attached to the bracket 7 so as to be rotatable in the vertical direction. The tip of this connecting member 8 is rotated 90 degrees, and is connected to the cleaning section F.
It is connected to a bracket 9 attached to the center of the back surface of the bracket 9 so as to be rotatable in the left and right direction. The third arm E and the connecting member 8, and the connecting member 8 and the cleaning section F
Both ends of an elevating hydraulic cylinder 10 and an oscillating hydraulic cylinder 11 are rotatably attached to the back surface of the washing unit F, respectively, so that the cleaning section F can be oscillated in the upward and downward direction or in the left and right directions. Further, the length of the third arm E is set to such a length that the tip of the second arm D does not get in the way when the cleaning section F is lifted up or down.

In addition, the cleaning section F is
As shown in Figures a, b, and c, _a cleaning tool F2 is formed by arranging three cleaning tools _F1 in the same direction and in parallel, and multiple cleaning tools _F2 are arranged in the same direction in the vertical and horizontal directions. A cleaning tool group F ₃ is formed by arranging the cleaning tools in a row.
This cleaning tool group _F3 is attached to a frame _F4 .

The cleaning tool unit _F1 is constructed as follows. That is, as shown in FIGS. 3a and 3b, it is made of a flexible material such as raw rubber, and has a predetermined length and wall thickness whose tip is cut in a predetermined length in the vertical direction to form a tufted part 21a. , the base of the tube 21 having a diameter of 100 mm is connected to a tip spout 23 of a nozzle 22 that spouts a gas-liquid multiphase flow.

Further, the nozzle 22 is configured as follows. That is, a cleaning liquid introduction member 25 that is pumped by a pump (not shown) is screwed and fixed to one end of the rigid tube 24 of a predetermined length, and is connected to the base of a cleaning liquid discharge member 27 via a pressure hose 26 or the like. ing. The tip of the cleaning liquid discharging member 27 is disposed at the base of the gas-liquid mixed phase liquid jetting member 28 with a gap 29 therebetween, and the cleaning liquid discharging member 27 and the gas-liquid mixed phase liquid jetting member 28 are secured to a surrounding fixing member 30. The gas-liquid multiphase flow jetting member 28 is fixed to the other end of the rigid tube 24 with the cleaning spout 23 protruding. In addition, holes 24a and 30a are formed in the rigid tube 24 and the fixed member 30 to introduce pressurized air from an air pressure feeder (not shown), and gas is drawn in from the gap 29 using the same principle as an aspirator. , a gas-liquid multiphase flow is formed.

Further, the cleaning tool _F2 is formed by arranging the three cleaning tools _F1 in parallel in a staggered manner (equilateral triangle), as shown in the side view and front view in Figures 4a and b. ing. This cleaning tool F ₂ is
1, a plurality of rows are attached to the rigid tube 24 portion of the nozzle so as to be slidable in the front and rear directions. The vertical frame body 31 to which the plurality of cleaning tools F ₂ are attached has a fifth
As shown in the plan view in the figure, a plurality of rows (three rows in the figure) are arranged at predetermined intervals to form a cleaning tool group _F3 . This cleaning tool group _F3 has a vertical frame body ₃₁ , a vertical frame body 31,
The tubes 21 are movable in one direction by the same distance as the spacing of the tubes 31, and are housed with the tubes 21 protruding from the frame _F4 .

Each of the cleaning tools F ₂ is provided with a drive cylinder 32 that drives it in the front-rear direction, and the drive cylinder 32 moves forward separately in response to a command from a sensor 33 provided in each of the cleaning tools F ₂ . It is starting to be pushed back. Also, frame frame
Inside F ₄ , move the vertical frame body 31 left and right,
A transverse cylinder 34 is provided.

Furthermore, pressurized collection pipes 35 and 36 for cleaning liquid and gas (air) are arranged on the inside of the back side of the frame _F4 , and extendable curl hoses 35a and 36 are provided.
It is connected to the cleaning liquid introduction member 25 of the nozzle of each cleaning tool F ₂ and the hole 24a through the hole 24a. The collecting pipes 35 and 36 are moved laterally in synchronization with the vertical frame 31 by a transverse hydraulic cylinder 34'. Further, cleaning liquid and air are pumped into the collecting pipes 35 and 36 by a pump and a pressure feeder (not shown), respectively.

Frame sensors 37 are attached to the four corners of the frame _F4 , and the frame sensors 37 protrude forward by a predetermined distance or retreat to the edge of the opening. A command is given to the hydraulic cylinder 10 for raising and raising F and the oscillating hydraulic cylinder 11 to make the opening surface 38 of the frame F ₄ face the cleaning surface 39a of the object to be cleaned 39, as shown in FIGS. 6a, b, and c. It is also designed to maintain a predetermined distance.

Next, the operation of the cleaning device configured as above will be explained.

First, the trolley A is driven and brought close to the object to be cleaned 39, and the support column B is extended and contracted, the first arm C is rotated in the vertical direction, extended and contracted, the second arm D is rotated upward and extended, and the cleaning section is elevated and swung. After bringing the cleaning section F close to the surface to be cleaned 39a, the sensor 37 of the frame _F4 is extended, and the first arm C
The extension/contraction mechanism and the lifting/swinging hydraulic cylinders 10 and 11 of the cleaning tool F are placed under the command of the sensor 37, and three of the sensors 37 touch the cleaning surface 39a, thereby turning the frame opening surface 38 into a cleaning surface. 39a and held at a predetermined distance.
The sensor 37 then automatically retracts and the cleaning tool
F ₂ protrudes, and each sensor 33 of each cleaning tool F ₂ detects the cleaning surface 39 as shown in FIG. 7, a, b.
A is detected and each cleaning tool F ₂ stops, and
The cleaning liquid and air are fed under pressure, the tube 21 becomes straight, and the tufted portion 21a is rolled by the ejected gas-liquid multiphase flow to wipe away the contaminated surface. At the same time, the transverse cylinders 34, 34' are extended and the vertical frame 31 is moved laterally by a predetermined distance, and when the movement is completed, the cleaning liquid and air are stopped. During this time, the surface to be cleaned 39a is sequentially detected by the sensor 23, and the tufted portion 21a of each cleaning tool _F2 is held at an appropriate position for wiping the contaminated surface. Frame like this
The surface to be cleaned facing the opening surface of F ₄ is wiped and cleaned. Next, the cleaning section F is moved to the next contaminated surface and the same operation is repeated to sequentially perform wiping cleaning. The above-mentioned cleaning is performed using a gas-liquid multiphase flow with a low specific gravity and the tufted portions 21a that roll due to this flow, so the surface pressure applied to the object to be cleaned is small, and it can be used with sufficient margin for aircraft etc. I can do it.

The pressure of the above cleaning liquid and air is from tube 2.
There is no particular limit as long as 1 is linear and the tufts roll, but cleaning liquid: 10±4Kg/cm ² , air: 5±2
Approximately Kg/cm ² is preferable. The opening of the frame varies depending on the object to be cleaned, but for large jet machines etc., the opening of the frame is 3 m wide x 2 m long.
This can be handled by increasing or decreasing the number of rows of cleaning tools _F2 arranged in the vertical and horizontal directions.

In the above description, the rotating portion is driven by a hydraulic cylinder or a pinion gear, but a normal rotary actuator may be used as appropriate. In addition, the drive cylinder 3
2, 34, 34' include hydraulic pressure, pneumatic pressure, etc.
The cylinders 32, 34, 34' may be driven longitudinally, or a pinion gear or the like may be used.

Further, when the surface of the object to be cleaned is horizontally flat, the transverse hydraulic cylinders 34, 34' are used while adjusting the position of the tufted part 21a by each sensor 33 of the cleaning tool _F2 . It is also possible to extend and retract the second arm D to perform cleaning in the lateral direction efficiently without the need for cleaning. In this case, a lock mechanism is provided that stops the extension and contraction of the second arm D and the introduction of cleaning liquid and air into the nozzle when a part of the cleaning tool _F2 is shortest and when it does not reach the contaminated surface even if it is extended. It is convenient to have one. Alternatively, only the cleaning tool for one vertical frame may be moved forward and backward, while the cleaning tools for the other vertical frames may be in a retracted state.

It also protrudes forward at the opening edge of the frame _F4 . A retractable hood may be attached to prevent the cleaning liquid from scattering, and a device may be provided to collect and circulate the cleaning liquid flowing down to the bottom. Additionally, dry the detergent spray pipes used in heavily contaminated areas and the surfaces after cleaning. Hot air piping or the like may be provided.

As described above, the cleaning device according to the present invention can wipe and clean huge large aircrafts etc. with limited surface pressure very efficiently and easily, so the cleaning work that requires manpower and time is greatly reduced. The benefits to maintenance-related work are enormous.

[Brief explanation of drawings]

1 to 7a and 7b show an embodiment of the cleaning device according to the present invention, in which FIG. 1 is a perspective view of the cleaning device, FIG. 2a is a schematic side view of the arm and the cleaning section, and FIG. Figure 2b is a view taken along the - line in Figure 2a, Figure 3a is a vertical sectional view mainly showing the nozzle part of the cleaning tool alone, Figure 3b is a side view of the tube, and Figure 4a is a cleaning A side view showing a part of the tool group, FIG. 4b is a view taken along the - line in FIG. 4a, and FIG. 5 is a plan view of the cleaning section.
FIG. 6a is a schematic side view of the frame, FIG. 6b is a view taken along the - line in FIG. Figure 7a is a partially cut-away side view of the cleaning unit that has started cleaning with the opening surface of the frame facing the cleaning surface, and Figure 7b is a view of the cleaning tool before and after cleaning starts in the same state as Figure 7a. FIG. 1...power unit, 2...engine, 3...
...Rail, 4...Driver's cab, 5...Bracket, 6
... Hydraulic cylinder, 7 ... Bracket, 8 ... Connection member, 9 ... Bracket, 10 ... Elevation hydraulic cylinder, 11 ... Oscillating hydraulic cylinder, 21 ...
Tube, 21a...tuft, 22...nozzle,
23... spout, 24... rigid tube, 4a... hole,
25...Cleaning liquid introduction member, 26...Pressure hose,
27... Cleaning liquid discharging member, 28... Gas-liquid mixed phase liquid ejecting member, 29... Gap, 30... Fixing member, 30
a...hole, 31...vertical frame body, 32...cleaning tool drive cylinder (drive cylinder), 33...cleaning tool sensor (sensor), 34, 34'...transverse hydraulic cylinder, 35...cleaning liquid pressurization collection Pipe, 35a... Curl hose, 36... Air pressurized collecting pipe, 36a...
Curl hose, 37...Frame frame sensor, 3
8...Opening surface, 39...Object to be cleaned, 39a...Cleaning surface, A...Dolly, B...Strut, C...First arm, D...Second arm, E...Third arm, F...
...Cleaning section, F ₁ ... Cleaning tool alone, F ₂ ... Cleaning tool,
F ₃ ... Cleaning tools group, F ₄ ... Frame.

Claims (1)

[Claims] 1 A single cleaning tool is formed by attaching the proximal end of a flexible tube whose tip is cut into a tuft shape to the tip of a nozzle that spouts a multiphase flow of liquid and gas, and multiple pieces of this single cleaning tool are aligned in the same direction. The cleaning tool is constructed by providing a drive mechanism which is arranged parallel to each other, and which moves both of them forward and backward together, and a sensor which detects the distance from the cleaning surface of the object to be cleaned and adjusts the position of the drive mechanism. Point the cleaning tools in the same direction.
A cleaning device comprising a group of cleaning tools arranged in a plurality of rows in the vertical and horizontal directions.