JPH0485151A - Washing machine - Google Patents

Abstract

PURPOSE:To simplify washing work by interlocking a rocking force imparting means with operation of a selector means, while controlling a rocker arm so as to be rocked only at the rear in the rocking direction of a washer body, and securing a washing range even in the return process as in an outward process. CONSTITUTION:When a washer body 1 gets retreating and a return process is started, two arms 35, 35' pass through a maximum hanfover position, and shift to the side of a front edge 10c of a carriage 10. Accordingly, each rocking range of these arms 35, 35' in the return process comes to symmetrical ranges in the longitudinal direction with that of the outward process. Since these arms 35, 35' are made rockable in the same range as the outward process even in the return process, a washer A is able to secure the same washing range even in both outward and return processes, thus an washing effect is made yet more better. In addition, since there is unnecessary to set up a detecting means such as a detecting lever or the like in advance, washing work can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cleaning machine for cleaning the lower part of an object to be cleaned that is supported on both sides, such as a vehicle such as an automobile or a train.

[Conventional technology]

Hereinafter, a conventional example of this type of cleaning machine will be explained using a case where the object to be cleaned is a vehicle as an example.

This type of washer is used, for example, to remove oil, dirt, etc. that has adhered to the lower part of the vehicle, such as the so-called suspension parts, prior to vehicle maintenance or inspection work. Cleaning is done by spraying cleaning water.

This washing machine consists of a washing machine main body that is installed to be movable back and forth along a rail laid on the floor below the vehicle, and a control means for controlling the operation of this washing machine main body. The washing machine main body has, for example, a swinging arm that can swing in a horizontal direction, and a nozzle that can spray high-pressure washing water toward the lower part of the vehicle is attached to the tip of the swinging arm.

The cleaning machine configured as described above moves forward along the rail, moves slowly after entering between the vehicle and the floor, swings the swinging arm, and at the same time sprays high-pressure washing water from the nozzle. The outbound process is completed by washing each part of the lower part of the vehicle and moving back and forth over the entire length of the vehicle.

After the above-mentioned outward journey process is completed, the washing machine main body retreats along the rail and exits from the lower part of the vehicle to complete the return journey process and one cleaning process is completed.

In order to prevent the swinging arm from interfering with and digging into uneven parts of the vehicle in the above-mentioned cleaning process and becoming inoperable, the swinging arm is moved from a position perpendicular to the direction of travel during the outward journey. It is configured to swing in the rear range, and therefore, in the return process in which the washing machine main body retreats, the swing arm stops swinging and is held in the closed position,
Alternatively, interference with the uneven portions of the vehicle is avoided by controlling the swinging state to be within a narrower range than in the outward journey.

Furthermore, it is necessary to thoroughly clean the area around the axle, and for this purpose it is common practice to slow down the cleaning machine itself. In order to slow down the washing machine, a detection means such as a detection bar is conventionally installed near the tires prior to cleaning work, and by detecting this detection bar, the washing machine decelerates. It was so controlled.

[Problem to be solved by the invention]

However, the conventional washing machine described above has the following problems.

In other words, in the return process, the swinging arm needs to stop at the closed position or swing within a narrower range than in the outward process, so the range that can be cleaned is narrower than in the outward process, and the cleaning effect is reduced. It was inevitable.

Furthermore, in order to decelerate the washing machine body near the axle, it was necessary to install a detection means, such as the above-mentioned detection bar, in a suitable position in advance, which required a lot of effort in preparatory work before washing.

The present invention solves the above-mentioned problems, and provides a cleaning machine that can obtain the same cleaning effect in the return process as in the outward process, and further eliminates the need to install a detection means for detecting the vicinity of the axle in advance. The purpose is to

[Means to solve the problem]

In order to solve the above conventional problems, the present invention provides a washing machine main body, a moving means for moving the washing machine main body back and forth with respect to an object to be cleaned, and a swinging means that is swingable with respect to the washing machine main body. A swinging arm capable of injecting cleaning water from the movable tip side, a swinging force applying means for swinging the swinging arm, a switching means for switching the moving direction of the washing machine main body, and the swinging force applying means The present invention has created a washing machine having a control means that controls the swinging arm to swing only in the rear direction in the moving direction of the washing machine main body in conjunction with the operation of the switching means.

Further, in this washing machine, by detecting an overload applied to the swinging arm, an overload detection means is connected to the swinging force applying means and the swinging arm. It is preferable to interpose it between the swing arm and the swing arm.

[Effect]

Now, according to the washing machine with this configuration, the swinging arm always swings only in the rear direction in the direction of travel, and the swinging arm does not respond to the unevenness of the object to be cleaned, such as the unevenness of the wheels in the case of a vehicle. It will not bite and stop the movement of the washing machine or the swinging of the swinging arm. Therefore, the swinging arm can be swung over a necessary and sufficient range not only on the outward journey but also on the return journey. Therefore, sufficient cleaning action can be performed on both the outbound and return trips.
Cleaning leaks can be almost eliminated.

Furthermore, if an overload detection means is provided between the swinging arm and the swinging force applying means, which cuts off the connection between the two when an overload is detected, the swinging arm may come into contact with a wheel, etc., causing an overload. The swinging arm stops swinging while the

Here, since the swinging arm faces toward the rear in the direction of travel, the swinging arm moves smoothly along the inner surface of the wheel, and the area around the axle can be cleaned well.

In conjunction with this overload detection means, the moving speed of all the regulation bodies can be slowed down, and in this way the area around the axle can be cleaned more effectively.

〔Example〕

Next, an embodiment of the present invention will be described based on the attached drawings, illustrating a case where the object to be cleaned is a vehicle.

FIG. 1 shows the entire washing machine A of this example, and includes a washing machine main body 1 that runs back and forth along a rail 2 provided on a floor surface 5,
The washing machine main body 1 is mainly composed of a control box 4 that controls the operation of the washing machine main body 1.

The above-mentioned rail 2 has a length that allows the washing machine main body 1 to run relative to the entire length of various vehicles, and is made of, for example, an angle material laid down on the floor 5. Detection plates 2a and 2b of a predetermined shape are attached to both front and rear ends of the rail 2.

3 is a wire, one end 3b of which passes through a winding drum m (not shown) of a winding device M installed in the control box 4, and then connects to the rear end of the washing machine main body 1 (on the control box 4 side). ), and the other end 3a extends from the winding device M, turns back via a pulley member 8 installed on the floor 5 near the tip of the rail 2, and is fixed to the front end of the washing machine main body 1. There is.

From this, the rotation of the winding drum m winds up the other end 3a side (hereinafter referred to as the forward side 3a), so that the washing machine main body 1 moves forward to the right in the figure), and the winding drum m or reverse and one end is on the 3b side (hereinafter referred to as the backward side 3
The washing machine main body 1 is configured to be retractable by winding up the main body 1 (referred to as b).

Reference numeral 6 denotes a hose for supplying high-pressure washing water to the washing machine main body 1, which supplies washing water separately to a pair of left and right swinging arms provided on the washing machine main body 1, which will be described later. Two of them are provided, and they are configured so that they can be wound up and unwound into the control box 4 as the washing machine main body 1 moves.

Although not shown, the base ends of the hoses 6.6 are connected to separate hot water generators and high-pressure pumps, and the hot water generators and high-pressure pumps supply high-temperature, high-pressure cleaning water to the hoses 6. .6.

Reference numeral 7 denotes an electrical wiring tube for passing various electrical wiring connected between the washing machine main body 1 and the control box 4, and this tube 7 is also connected to the washing machine main body 1.
It is configured such that it can be freely wound up and unwound within the control box 4 as the belt moves.

Next, the washing machine main body 1 will be explained according to FIG. 2 and subsequent figures.

This washing machine main body 1 is capable of moving forward and backward along a rail 2 through a gap between a vehicle B (described later in connection with FIG. 6) and a floor surface 5, and is capable of moving forward and backward through a gap between a vehicle B (described later in connection with FIG. , high-pressure cleaning water is sprayed onto the axle and other suspension parts to wash off oil, dirt, etc. adhering to these parts.

In the figure, reference numeral 10 denotes a cart, which has a box-like shape with an open top, and has wheels 11° 11 or bearings 1 at both front and rear ends of the right side edge 10a in the figure.
It is rotatably supported via 1a and lla. Further, groove rings 12, 12 are rotatably supported at both front and rear ends of the left side edge 10b in the figure via bearings 12a, 12a.

A V-groove 12b is formed on the circumferential surface of each of the groove rings 12.degree. 12 so as to be able to be moved over the rail 2.

Furthermore, this truck 10 has a middle edge 1 for reinforcing the truck 10 located slightly upwardly in the figure between the left and right side edges 10b and 10a.
0e or erected.

An arm drive section 13 is installed inside the truck IO formed in this way.
and a nozzle drive section 14.

Reference numeral 40 denotes a drive motor for the arm drive unit 13, which is installed perpendicularly to the middle edge 10e of the cart 10 on the lower side in the drawing, and a sprocket 15 is keyed or the like on the rotating shaft 40a of the motor 40. There is. This sprocket 15
This is a so-called double-row sprocket with teeth formed in parallel around its circumference.

Reference numeral 41 denotes a drive motor for the nozzle drive section 14, which is disposed opposite to the arm drive motor 40 on the upper side in the figure with respect to the middle edge 10e of the truck 10. This motor 41
The rotating shaft 41a extends upward along the middle edge 10e,
A sprocket 18 is key-mounted to the rotating shaft 41a. This sprocket 18 also has the above-mentioned sprocket 1.
Like 5, it is a double row sprocket.

In the following, the arm drive unit 13 and the nozzle drive unit 14 are configured symmetrically with respect to the motors 40 and 41, so for example, the configuration on the left side in the figure will be explained, and the configuration on the right side will be indicated by the same reference numerals in the figure. Explanation will be omitted by indicating with a dash.

First, the arm drive section 13 will be explained.

33 is a reducer having a predetermined reduction ratio, and the middle edge 10
It is installed at the corner between e and the left side edge 10b. The input shaft 33a of the reducer 33 is parallel to the output shaft 40a of the drive motor 40, extends toward the motor 40 side of the bracket (downward in the figure), and has a sprocket 16 attached thereto.

Further, the output shaft 33b extends upward and projects from the upper end of the truck 10 through an insertion hole 57b (see FIG. 3) formed in the shielding plate 57. This shielding edge 57 is formed to extend inward from the upper end of the left side edge 10b of the trolley IO, and
The upper part of the area is covered.

In FIG. 2, reference numeral 23 denotes an endless chain, which is hooked onto one of the teeth of the sprocket 15 and pulled out to the left, and is connected to the sprocket 16 so that the rotation of the motor 40 can be transmitted to the reducer 33. It is hung up.

A tension sprocket 42 is installed between the sprockets 15 and 16 in order to apply a constant tension to the chain 23.

Reference numeral 35 denotes a swinging arm (hereinafter also simply referred to as an arm), which has an upwardly open elongated box shape and connects the output shaft of the reduction gear 33 via a connecting portion 44 on the base 35a side formed in a substantially cylindrical shape. 33b.

The connecting portion 44 is connected to the base 35a as shown in FIG.
It consists of a connecting shaft 45 installed inside the arm 35, and an overload detection mechanism 47 screwed onto the arm 35. The connecting shaft 45 connects to the base 35 via a bearing 46°46.
a, the reducer 33 is rotatably supported, and the reducer 33
A key mount 48 or the like is attached to the output shaft 33b. Moreover, this connecting shaft 45 has 1. Along the circumference of the flange 45a
A V-shaped hole 45b having a V-shaped cross section is formed at one location on the circumferential surface of the flange edge 45a.

On the other hand, the overload detection mechanism 47 has a steel ball 49 having a diameter slightly larger than the opening diameter of the V-hole 45b. The steel ball 49 is supported by a member 51 in which a substantially hemispherical portion thereof can be accommodated, and in which a hole 51a is formed.The member 51 is slidably supported on the case 50. Moreover, this receiver is connected to the shoulder portion 51c of the member 51 and the case 50.
An elastic member having a certain elasticity, such as a coil spring 52, is interposed between the bottom portion 50a and the bottom portion 50a.

The bottom portion 50a is removably screwed 50b onto the case 50 so that the coil spring 52 can be replaced.

The overload detection mechanism 47 formed in this way is attached to the base 35.
a, and the steel ball 49 is pressed and held against the V hole 45b of the connecting shaft 45 by the coil spring 52, so that the connecting shaft 45 is held non-rotatably with respect to the arm 35, The rotational output of the reducer 33 is configured to be transmittable to the arm 35.

Therefore, when an external force F of a certain level or more acts on the arm 35 and the steel ball 49 resists the coil spring 52 and detaches from the V hole 45b, the connecting shaft 45 rotates with respect to the arm 35. The rotational output of the reducer 33 is configured to be unable to be transmitted to the arm 35.

LS? (Indicated by LSa on the arm 35' on the right side of the figure) is a position detection sensor (hereinafter simply referred to as a sensor) such as a limit switch, for example.

This sensor LS7 is for detecting that the member 51 has moved to the right in the figure when an external force F of a certain level or more is applied to the arm 35 and the steel ball 49 is detached from the V hole 45b. The above-mentioned bone is provided opposite to the rear end 51b of the member 51. Further, this sensor LS7 is electrically connected to the control box 4.

Reference numeral 54 in FIG. 3 denotes a cover member, which is screwed onto the upper surface of the connecting shaft 45 and shields the inside of the base 35a via a seal member 55 provided around the upper surface of the base 35a.

Reference numeral 21 denotes a sprocket of the nozzle drive section 14, which will be described later, and is rotatably pivotally connected to the lower part of the connecting shaft 45 via bearings 22 and 22.

Reference numerals 59 and 59 denote horizontally long insertion holes formed in the circumferential surface of the base portion 35a, which are arranged in parallel so that a chain 29 hooked between the sprocket 21 and a sprocket 31 of a nozzle 37, which will be described later, can be inserted therethrough. has been done.

Reference numeral 56 denotes an annular sealing member, which is interposed between the outer peripheral side of the upstanding edge 57a and the lower inner peripheral side of the base portion 35a.

The above-mentioned raised edge 57a corresponds to the insertion hole 5 formed in the shielding plate 57.
It is formed along the periphery of 7b.

Reference numeral 58 in FIG. 2 is a socket for communicating the inside and outside of the arm 35 and inserting electrical wiring, etc. The side edge 35b on the left side of the arm 35 in the drawing is bent near the base 35a. It is attached to the formed recess 35C.

35d is a nozzle case for mounting a nozzle 37, which will be described later, and is a cylindrical member with a cutout at the upper corner;
Arm 35 with its lower half protruding downward
For example, it is formed by welding or the like on the tip of the.

Next, the nozzle drive section 14 will be explained.

Chains 25, 25' are hooked to the sprocket 18 attached to the rotating shaft 41a of the nozzle drive motor 410. The chains 25, 25' are pulled out to the arm drive motor 40 side through insertion holes 10f-1Of formed in the middle edge 10e, and are hooked to intermediate shafts 19 and 19', respectively.

The intermediate shafts 19, 19' are arranged in parallel at an intermediate position between the reducers 33, 33', and their axes are located on a line connecting the output shafts 33b, 33b' of the reducers 33, 33'.

Hereinafter, since the configuration is bilaterally symmetrical as described above, the left side in the figure will be described.

FIG. 5 shows details of this intermediate shaft 19 (intermediate shaft 19'
has a similar configuration).

62 in the figure is a housing, and the bottom plate 10g of the trolley 10
It is formed from a base 62a that can be fastened to the base 62a, and a cylindrical case 62b that is erected, for example, by welding, at the center of the base 62a. The base 62a has long groove holes 62c to 6 whose position can be adjusted along the middle edge 10e.
2c is formed, and the end on the right side in the figure is cut out so that the rain intermediate shaft 19, 19' does not interfere (the position can be adjusted).

Reference numeral 61 denotes a shaft body, which extends upward and is rotatably supported via bearings 64 and 64 installed in the mouth and inner part of the case 62b.

Reference numerals 65 and 66 denote sprockets, and keys 67 and the like are mounted vertically in parallel to the tip of the shaft body 6. The chain 25 described above is hooked to the upper sprocket 66, and the chain 27 is hooked to the lower sprocket 65 (see FIG. 2). Further, the pitch circle of the sprocket 66 is formed to be slightly larger (more teeth) than that of the sprocket 18 on the motor 41 side, and furthermore, the sprocket 65 is formed with a larger pitch circle than the sprocket 66, so that the output of the motor 41 is It is configured to have a predetermined speed ratio with respect to the rotational speed.

The motor 4 is connected to the intermediate shaft 19 formed as described above.
The chain 27 is hooked to the sprocket 21 in order to transmit the rotational output of 1 to the nozzle 37 side.

This sprocket 21 is a double-row sprocket having upper and lower teeth 21a and 21b as shown in FIG. By intervening, this connecting shaft 45
is rotatably supported independently of the

The chain 27 is hooked to the lower teeth 21b of the sprocket 21.

2 is a chain that is hooked to the upper teeth 21a of the sprocket 21, and reaches the nozzle 37 attached to the tip of the arm 35 through the insertion holes 59, 59. ing.

Next, the configuration of the nozzle 37 will be explained based on FIG. 4.

This nozzle 37 is housed in a nozzle case 35d formed at the tip of the arm 35.

70 in the figure is a support frame, and the above-mentioned nozzle case 3
It is formed into a cylindrical shape having an outer diameter that can be inserted into the boss hole 70c, and a rotating shaft 73 is inserted into the boss hole 70c. A tapered screw 70 is provided on the outer peripheral surface of the support frame 70 so that a hose joint (not shown) attached to the end of the hose 6 can be screwed thereto.
a is formed. This tapered screw 70a is formed at a position that substantially aligns with a relief hole 79 formed on the arm base 35a side of the nozzle case 35d. Further, this tapered screw 70a communicates with a boss hole 70C provided through the center of the support frame 70 through a hole 70b.

A rotating shaft 73 is connected to the boss hole 70c via a bearing 75°76.
is rotatably inserted.

This rotating shaft 73 has an annular groove 7 communicating with the hole 70b.
A notch 3a is formed along its circumference. Also,
A through hole 73b is formed in the annular groove 73a and passes through the axis of the rotating shaft 73, and the through hole 73b communicates between the opposing bottom portions of the annular groove 73a. It communicates with the hole 73C. A tapered screw 73d is formed at the upper end of the vertical hole 73c so that the nozzle body 81 can be attached thereto.

By connecting the tapered screws 70a and 73d as described above, the cleaning water supplied to the nozzle 37 via the hose 6 is always ejected from the nozzle body 81 at any position in the circumferential direction of the rotating shaft 73. It is configured so that it is possible. Here, the nozzle body 81 is inclined by a predetermined angle with respect to the axis of the rotation shaft 73 as shown in the figure, and the tip of the nozzle body 81 moves on the circumference of a constant radius by the rotation of the rotation shaft 73. This makes it possible to spray cleaning water over a wider area.

Further, a sprocket 78 is attached to the upper part of the rotating shaft 73, and the chain 29 described above is hooked to the sprocket 78.

Reference numerals 77 and 77 denote gaskets, which are installed along the upper and lower sides of the annular groove 73a.

Reference numeral 72 denotes a lower lid, which is fastened to the lower surface of the support frame 70. A circular protrusion 72a is formed at the center of the upper surface of the lower lid 72, and the above-mentioned bearing 76 is fitted into the circular protrusion 72a.

Reference numeral 71 denotes an upper lid, which is fastened to the upper surface of the support frame 70. A fitting hole 71a is formed in the center of the upper lid 71, a sealing member 74 is fitted into the fitting hole 71a, and the upper part of the rotating shaft 73 projects through the sealing member 74. Further, a circular recess 71b in which the sprocket 78 can be housed is formed on the lower surface side of the upper lid 71, and oblong insertion holes 71c, 71c are formed in the side surface of this recess 71b. This insertion hole 71
c and 71c are aligned with similarly oblong insertion holes 80 and 80 formed in the nozzle case 35d, so that the chain 29 can be hooked between the sprocket 78 and the sprocket 21.

As described above, the nozzle drive unit 14 operates by driving the drive motor 4.
The nozzle body 81 is configured to be able to swing independently of the swinging of the arm 35 by repeating forward and reverse rotation of the rotating shaft 41a at regular intervals.

90.90', which is clearly shown in Figure 2, is the arm 35.3.
Brackets) 90a, 90a which are stoppers on the swinging return side of 5' and are attached to the front edge 10c of the trolley 10 in a backward manner.
' Attached via. Also, 91.91'
Also a stopper is provided on the rear edge 10d symmetrically with respect to the stopper 90, 90'.

LS, LS2 are position detection sensors (hereinafter simply referred to as sensors) such as Limit Switch Sochi, etc.
It is attached to the front edge 10c so as to be able to detect the swing return side position of the arm 35, 35', and is further electrically connected to the control box 4.

Also, LS,,LS6 are also sensors, and the sensor LS
1. It is attached to the rear edge 10d in a symmetrical position to LS2,
Similarly, it is relay-connected to the control box 4.

LS3. LS8 is a sensor for detecting the forward end and backward position of the bogie IO, and is attached to the bottom plate 10g of the bogie 10 so as to be able to detect the detection plates 2a and 2b attached to almost both ends of the rail 2. and is connected to the control box 4 by relay.

Reference numeral 92 in FIG.
A cup member capable of shielding almost the entire top surface of 0,
The left and right ends have relief recesses 92a, 92a in the center.
are formed with incisions, respectively, and these relief recesses 92a, 9
The peripheral edge of 2a' is fastened to the trolley IO in a state where it rests on the shielding plate 57, 57'.

The washing machine A of this example is configured as described above, and the washing machine A will be explained below with reference to FIGS. 6 and 7.
The effect of this will be explained.

Here, before the vehicle B is washed, the vehicle B is first stopped at a predetermined position while straddling the rail 2. At this time, the washing machine main body l is at the backward end position (control box 4 side shown, hereinafter referred to as the original position (position (A) in the figure)).
I'm waiting for you.

In the standby position of the washing machine main body 1, the sensor L
S a detects the detection plate 2b, and the electric signal is taken into the sequencer 101 shown in FIG. The arm drive motor 40 and the nozzle drive motor 41 are both stopped.

Also, at this point, the arm 35.35' is stopped at a position (indicated by a - dotted chain line in the figure) where the arm 35.35' contacts the stopper 91.91' on the rear edge 10d side, and the sensor LS4. Its location has been confirmed by LS5.

Further, the wash water supply switch is set in advance not to operate at this time.

In the above state, a series of steps of the washing machine A starts.

First, when the start switch on the operation panel 100 is turned on, the motor drive circuit 1
02, the winding drum m of the wire winding device M is activated. This winding drum m is arranged on the forward side 3 of the wire 3.
A is rotated in the winding direction (normal rotation), and the washing machine main body l starts moving forward at a constant speed.

At the same time, the drive motor 40.41 rotates via the motor drive circuit 102, thereby causing the arm 35.3 to rotate.
5' starts swinging, and the nozzles 37 and 37' provided at the tip of the arm start swinging.

The swinging range of this arm 35, 35' is always backward from a position perpendicular to the direction of movement (indicated by a solid line in the figure, hereinafter referred to as the maximum extended position), and is on the swinging return side (sensor After stopping at the detection position of LS4 and LS5 for a predetermined time, it moves toward the maximum extended position for a preset swing time, stops at this maximum extended position for a predetermined time, and then moves to the return side again. And arm 35.35' is sensor LS4. When the motor 40 returns to contact the LSS, the motor 40 is reversed and swung again toward the maximum extended position for a predetermined period of time. Thereafter, the arms 35, 35' repeat this swinging motion in the process until the washing machine main body 1 reaches the forward end (hereinafter referred to as the forward process).

On the other hand, since the drive motor 41 of the nozzle 37.37' is set in advance to repeat forward and reverse rotation at predetermined intervals, the nozzle 37.37' rotates independently of the swinging operation of the arm 35.35'.
It repeats forward rotation and reverse rotation. Moreover, as described above, since the nozzle bodies 81, 81' are inclined at a predetermined angle with respect to the axis of the rotating shaft 73, the tips of the nozzle bodies 81, 81' swing within a certain range. is repeated.

Note that the supply of cleaning water is started by turning on the cleaning water supply switch on the operation panel 100 when the cleaning water reaches directly below the washer body 1 or the vehicle B, and the water is supplied from the nozzles 37, 37' toward the bottom of the vehicle. Washing water is sprayed.

As described above, while the washer main body l moves forward, the arm 35.35' swings, and the nozzle 37.37' rotates, the cleaning water is injected toward the vehicle B.
The lower part of vehicle B is being cleaned.

Next, the washing machine main body 1 is located near the axle, that is, the tire T,
T (in this example, it is shown as a double tire of a large car)
When the arm reaches 35.35 (position shown in the figure (b))
' collides with tires T and T on the way to the maximum extended position. Due to this collision, an external force F is applied to the arm 35.35', and this external force F causes these connecting parts 44.4 to
At 4', the steel balls 49°49' are removed from the holes 45b and 45b', and the connecting shaft 45.45' and the arm 35.3 are separated.
5' link is released. This overload detection mechanism 47.4
7' turns on sensor LS7 and sensor LSa, and their electrical signals are taken into sequencer 101. In response to this electric signal, the sequencer 101 issues a command to the motor drive circuit 102, whereby the rotation speed of the winding tram m of the winding device M is reduced to a constant speed, and therefore the advancing speed of the washing machine main body 1 is reduced. will be decelerated to a certain value. Thereafter, this deceleration state continues until a certain time period set in advance by a timer has elapsed.

On the other hand, the arms 35 and 35' that have been released from the connection remain interfering with the tires T and T, and the connecting shafts 45 and 45' continue to rotate to their original maximum extended position for a predetermined period of time as described above. After the elapsed time, it reverses to the return side, and at this time V hole 4
5b and 45b', the arm 35.35' is connected to the connecting shaft 45.4 again.
5' and swings to the return side. Arm 35 again,
If 35' moves to the extended side and collides with the tires T, T, the above operation is repeated (position (c) in the figure).

Note that at this time, the operation of the nozzles 37, 37 does not change, and repeats forward and reverse rotation at regular intervals.

In this way, while the washing machine main body l is moving near the tires T and T, the arm 35.35' interferes with the tires T and T, and the connection is released, automatically moving the washing machine main body l.
As the traveling speed of the vehicle decreases, the areas near the tires and axle will be cleaned more intensively.

The washing machine main body 1 further advances and when the arms 35, 35' reach a range where they do not interfere with the tires T, T, the arms 35.3
5' becomes swingable again up to the maximum extended position and continues the cleaning operation. Further, at this time, the above-mentioned timer setting is canceled after a certain period of time has elapsed, and the moving speed of the washing machine body 1 is increased to the initial value.

As the cleaning work progresses as described above, when the washer body l reaches the backward end (position (d) in the figure), the sensor L S
3 detects the detection plate 2a, and the outward process ends.

Due to the operation of this sensor LS3, the winding tram m is reversed via the sequencer 101 and the motor drive circuit 102 to wind up the backward side 3b of the wire 3.
The washing machine main body 1 begins to move backward, and then the return process is started.

Further, when the sensor LS3 is activated, the timer in which the swinging time of the arm 35, 35' is set is canceled.
5.35' passes through the maximum extended position and sensor LS
,, the position where LS2 is detected, that is, the front edge 1 of the truck 10
It moves to the 0c side and comes into contact with a stopper 90, 90' and stops (indicated by a chain line at position (d) in the figure). In this state, the washing machine main body l proceeds with the return process, and the sensor L
When S3 is turned off, timer 2 becomes valid again, and arm 35, 35' repeats swinging within a certain range. Therefore,
The range of swing of the arms 35, 35' during the backward stroke is symmetrical in the front-rear direction with respect to that during the forward stroke.

By automatically switching the swing range of arms 35 and 35' in this way, this arm 3
The swing range of 5.35' is behind the maximum extended position with respect to the traveling direction.

Thereafter, in the return process, the same operation as explained in the outward process is repeated, and the washing machine main body 1 reaches the original position. When the washing machine main body 1 reaches the original position, the sensor LSe or the detection plate 2
By detecting b, the rotation of the winding drum m is stopped, the movement of the washing machine main body I is stopped, and the arm 35.35'
passes through the maximum extended position again and the sensors LSs and LS
When it reaches the return position on the s side, its swinging is stopped, and the nozzle 37
The rotation at .degree. 37' is also stopped, and at the same time, the supply of washing water is also stopped.

As described above, the series of processes of the washing machine A is completed, and the washing machine main body I is on standby in preparation for the next vehicle washing work. By turning on the start switch of the operation panel 100 again, the washing process explained above is started. It is something that is repeated.

As explained above, according to the washing machine A of this example, the arm 35.35 is
Since the washer A of this example can be oscillated,
can ensure the same cleaning range in both the forward and return processes,
A cleaning machine with even better cleaning effects can be obtained.

Furthermore, in the washing machine A of this example, since the arms 35 and 35' interfere with the tires T and T and the washing machine main body 1 automatically decelerates, it is necessary to install a detection means such as a detection bar in advance. There is no need for this, which has the effect of simplifying the work.

Note that the washing machine A illustrated above has been described with the object to be cleaned as a vehicle, but is not limited to this; for example, it is supported on both sides, such as under the floor of a building structure, and the main body of the washing machine is below the vehicle. If the object to be cleaned has a structure that allows entry, the same effects as those exemplified will be achieved.

Furthermore, the means for moving the main body of the washing machine may be, for example, an electric motor that directly rotates the grooved ring 12 in the forward and reverse directions without using the winding device M, and the drive transmission means is not a chain but a toothed belt. Although this may be possible and is not shown, in order to switch the swing range of the arm, for example, an arm stand is provided to be rotatable relative to the cart, and the arm is swingably supported on the arm stand. By rotating the arm stand approximately half a turn between the forward and backward steps, the arm may always swing only at the rear in the traveling direction.

〔Effect of the invention〕

Since the present invention has the above-mentioned configuration, the arm always swings only on the rear side relative to the moving direction of the washing machine main body, so the same cleaning range as the outgoing process can be secured in the returning process, and this washing machine The cleaning effect can be further enhanced. Furthermore, when the washer body reaches near the axle, the arm interferes with the tire and the overload detection means is activated, and by detecting the operation of this overload detection means, the running speed of the washer body is reduced. This has the effect of simplifying the work by eliminating the need to install a detection means such as a detection bar in advance.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an overall plan view of a vehicle lower part washer, FIG. 2 is a plan view of the main body of the washer, and FIG.
The figure is a vertical cross-sectional view of the arm connection part, Figure 4 is a vertical cross-sectional view of the nozzle, Figure 5 is a partial vertical cross-sectional view of the intermediate shaft, Figure 6 is an illustration of operation, and Figure 7 is a diagram of the electrical control system. be. ~Vehicle lower part washer, B-vehicle washer main body, 2-rail control box, 10-bogie arm drive section, 14 nozzle drive section/reducer/arm, 37-nozzle arm drive motor "nozzle drive motor/ °Connection section, 45--Connection shaft"--Overload detection mechanism 0--°Operation panel, 101-Sequencer ■ Motor drive circuit LS. ~LSs Sensor external force

Claims (1)

[Claims] (1) A cleaning machine that cleans the lower part of an object to be cleaned that is supported on both sides, comprising: a cleaning machine body; a moving means for moving the cleaning machine body in a front-back direction with respect to the cleaning body; A swinging arm that is swingable relative to the washing machine body and capable of spraying washing water from the swinging tip side, a swinging force imparting means that swings the swinging arm, and a switch that switches the moving direction of the washing machine main body. and a control means for controlling the swinging force applying means in conjunction with the operation of the switching means so that the swinging arm swings only in the rearward direction in the moving direction of the washing machine main body. Machine. (2) An overload detection means for disconnecting the rocking force applying means and the rocking arm by detecting an overload applied to the rocking arm is connected to the rocking force applying means and the rocking arm. The washing machine according to claim 1, which is configured to be interposed between.