JPH0675118B2 - Structure of the cleaning unit in a floor cleaning / wiping decontamination machine in a nuclear facility - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to the structure of a cleaning unit in a floor cleaning / wiping decontamination machine in a nuclear facility.

(Prior Art) In a nuclear power plant or the like, in order to perform a sound and stable operation of the power plant or the like, regular inspection of equipment is carried out. At this time, the floor surface may be contaminated. Decontamination of such contaminated floor surfaces has conventionally relied on manual work.

(Problems to be Solved by the Invention) In view of the above prior art, the present applicant has improved the above prior art, and an invention entitled “Floor cleaning / wiping decontamination machine in a nuclear facility” Patent application (JP-A-62-29779)
3). The present invention aims to provide a cleaning section unit in a cleaning / wiping decontamination machine, which is further improved, the structure is simplified, the labor is saved, and the mechanization is further improved.

(Solution by the Invention) Cleaning brush 2 provided at the lower front portion of the machine body and cleaning brush 2
Of the water, and a cleaning unit a including the front wheel 16 and the auxiliary caster 15 provided at the rear of the water absorption unit 9, and a cleaning unit 27 at the bottom of the cleaning unit a. And a wiping unit b having a paper feed roller 36 'and a winding roller 36 for the wiping cloth 27 on the upper part, and a wiping unit b.
Is provided at the rear of the and is operated by the operation handle 43,
A drive unit c that allows the drive wheels 40 to be raised and lowered by operating the operation lever 45, and a water supply and suction unit provided at the top of the machine body that includes a wash water recovery tank 51, a suction air mist removing device 52, and a HEPA filter 52a. Floor cleaning consisting of part d
In the wipe decontamination machine, the cleaning unit a includes a cleaning brush 2 attached to a removable rotary shaft 4, and a water absorbing unit 9 elastically attached to the rear of the cleaning brush 2 and having an auxiliary sponge 13. The cleaning unit a is provided in the rear of the water absorbing unit 9 and is composed of a front wheel 16 and an auxiliary caster 15 as a front supporting device that replaces the front wheel 16 when moving or replacing parts. By operating the grip 46 provided on the operating lever 45 provided, the lock mechanism 18 is released via the releasing wire 19 to be attached as a unit to the bracket 21 that can be flipped up obliquely upward, and the cleaning unit. The auxiliary caster 15 is configured to contact the floor at the same time when the unit a is flipped up.

(Example) Fig. 1 is a symbol A for cleaning in a nuclear facility according to the present invention.
It is a wipe decontamination machine (hereinafter simply referred to as a decontamination machine). Hereinafter, each unit other than the cleaning unit of the decontamination machine will be briefly described, and then the detailed configuration of the cleaning unit unit according to the present invention will be described.

By the way, this decontamination machine is roughly divided into a) a cleaning brush, a cleaning section unit including a water absorption section, front wheels and auxiliary casters,
From b) a wiping unit including a wiping unit and a wipe cloth feeding / winding mechanism, c) a driving unit including a traveling drive mechanism and a direction control mechanism, and d) a water supply and suction unit for washing water. Has become.

i) Wiping unit b: The wiping unit b is integrated with the wipe cloth feeding / winding mechanism and is attached to the lower portion of the machine body 1.

As shown in FIGS. 10 to 11, the mechanism for pressing the wiping cloth 27 presses the rotating porous rubber belt 28 corresponding to the unevenness with the pressing spring 29 via the pressing roller 32 to apply the surface pressure. .

Further, the rotation of the porous rubber belt 28 is driven by transmitting the rotation of the timing pulley 30 set in the pressing mechanism to the timing belt 31 attached inside the porous rubber belt 28. As a result, the drive transmission mechanism does not stick out. 33 is a guide roller, and 34 is a wiping cloth winding motor, which drives the winding roller 36 via a sprocket 35. A porous rubber drive motor 37 drives the timing pulley 30 via a sprocket 38 (Fig. 11). 39 is a tensioner.

ii) Drive unit c: The drive mechanism at the rear is independent of the main body (Fig. 12). 41 is a drive shaft, which drives the drive wheels 40. By using the drive shaft 40 as the rear wheel, the water absorption part 9 and the wiping cloth 27
The space between them can be narrowed, and the position of the center of gravity can be moved backward. In addition, since the drive mechanism is integrated with the drive shaft 40, the left and right 30
It has a mechanism to change the angle up to a degree, and like the wiping unit b, it has a structure that is suspended from the machine body 1.
42 is a traveling motor.

In order to push up the rear part by 50 mm during the movement, the pressing cam 44 pushes and opens the space between the machine body 1 and the drive unit c by 50 mm. This operation is performed by pulling up the cleaning unit a
By making it interlock with the operation of pushing down 15, a series of ground release operations can be performed at the rear. When the operating lever 45 is pulled down, the push-down cam 44 rotates, and the drive unit c descends against the spring 48.

On the other hand, when it is desired to temporarily release the grounding of the cleaning brush 2, the water absorbing portion 9 and the wiping cloth 27 during the decontamination work such as changing the direction, the operation lever 45 for releasing the grounding is half-stopped. Then, the grounding of each part is about half (the suction part is about 65 mm, the wiping cloth is about
25mm) will be released, and the front wheel auxiliary caster 15
Is about 15 mm lower.

iii) Water supply and suction section d: The decontamination wastewater is the suction blower 49 loaded on the upper part of the machine body 1.
By (Figs. 13 and 14), suction and recovery is performed in the recovery tank 51 via the suction hose 11. Further, the suctioned air is discharged after passing through the mist removing device and the HEPA filter 52a, but the waste liquid can be pressure-fed and discharged from the drain nozzle by the operation of the switching lever 53 (Fig. 14).

Next, the cleaning unit a according to the present invention will be described.

The cleaning unit unit a is composed of a water spray nozzle, a cleaning brush, and a water absorption unit, which are integrated as one unit (FIG. 4) and attached to the lower front portion of the machine body 1.

For spraying, wash water having a fan-shaped spread of about 60 degrees is averagely sprayed from four low flow rate spray nozzles 3 (FIG. 2) provided in the front upper width direction of the cleaning brush 2. The flow rate can be controlled by a control unit 43 'provided on the rear operation handle 43.

As shown in FIG. 6, the cleaning brush 2 is divided into three parts in the middle of the brush and can be easily removed from the unit by removing the rotary shaft 4. In FIG. 6, the rotary shaft 4 is driven by a chain via a sprocket 5. And the middle 2
It is supported by a support stay 7 having a bearing mechanism 6 at a place. If a cleaning brush is provided on the outer side of the sprocket 5 as shown in FIGS. 5 and 7, it is safe because the sprocket 5 is put into the apparatus and protrusions such as chains do not appear outside. 8 is a stop screw.

The water absorbing portion 9 is provided at the rear of the cleaning brush 2, is supported by the left and right stop pins 10 as shown in FIG. 8, and the portion connected to the suction hose 11 is detachably connected by the coupling 12. The water absorbing portion 9 can be easily removed by removing the retaining pins 10 of the left and right spring mechanisms. 13 is an auxiliary sponge (9th
This auxiliary sponge can be easily removed by removing the stopper screw 14 at one end and lowering it.

When moving or replacing parts, the cleaning unit a can be pulled up about 45 degrees forward and upward together with the bracket 21 by the spring 20 as shown by the dashed line in FIG. At that time, a mechanism that pushes the auxiliary caster 15 downward,
At the same time as the cleaning unit a is pulled up, the auxiliary caster 15
Will come out downwards. The auxiliary caster 15 is raised about 30 mm during decontamination and about 50 mm when moved.

In order to push down the auxiliary caster 15, the weight applied to the front wheel 16 is pushed up, so an auxiliary mechanism for lowering the auxiliary caster 15 with a push spring is attached. Therefore, when the auxiliary caster 15 is stored, the auxiliary caster 15 tends to extend downward, but when it is pressed, a force is applied in the direction in which the surface pressure of the brush 2 and the suction auxiliary sponge 13 becomes weak. Become.

Therefore, as shown in FIG. 4, when the auxiliary caster 15 is housed, the lock pin 18 works to fix the lock mechanism 18. The fixation is released by pulling the release wire 19 in the direction of the arrow in FIG. 4 to remove the stop pin 17 from the lock mechanism 18, and the auxiliary caster 15 is pushed downward. At this time, of course, the cleaning unit is flipped up like a virtual line.

Incidentally, in these operations, when the grip 46 attached to the operation lever 45 shown in FIG. 12 is grasped, the lock machine is released, and when the operation lever 45 is further pulled down, the washing unit is flipped up as shown by a virtual line in FIG. .

Reference numeral 22 denotes a motor mounted on the bracket 21, which drives the sprocket 5 of the cleaning brush 2 via a chain 23. twenty four
Is a cleaning water supply pump also provided on the bracket 21, and is equipped with a water supply hose 25, 26 and a water spray nozzle 3 and a water supply reservoir 5
Familiar with 6.

(Effect) As described above, the cleaning unit a has the cleaning brush 2, the water absorbing part 9, the front wheel 16 and the auxiliary caster 15 unitarily mounted on the bracket which is attachable to and detachable from the machine body 1. Only the cleaning unit a can be replaced regardless of the unit.

At the time of movement, the cleaning unit a is flipped up obliquely, and at the same time, the front wheels 16 go up and the auxiliary casters 15 go down, so that the movement of the apparatus is also extremely easy.

Since the cleaning brush 2 can be removed from the cleaning unit a by removing the fixing screws on both sides, the cleaning brush 2 can be easily replaced.

[Brief description of drawings]

 FIG. 1 is an overall perspective view of the decontamination machine. FIG. 2 is a side view of the same. FIG. 3 is a plan view of the same. FIG. 4 is a side view of the cleaning unit. FIG. 5 is a partially cutaway front view of the same. Fig. 6 shows a cleaning brush. FIG. 7 shows another example of the cleaning brush. FIG. 8 is a front view of the water absorption unit. FIG. 9 is a side view of the same. FIG. 10 is a side view of the wiping unit. FIG. 11 is a sectional view of the same. FIG. 12 is a side view of the drive unit. FIG. 13 is a front view of the recovery tank unit. FIG. 14 is a plan view of the same. In the figure; A: cleaning and wiping decontamination machine, a: cleaning section unit b: wiping section unit, c: drive section unit d: water supply and suction section 1 ... machine, 2, 2 '... … Cleaning brush 3,3 ′ …… Sprinkling nozzle, 4 …… Rotary shaft 5 …… Sprocket, 6 …… Bearing mechanism 7 …… Support stay, 8 …… Set screw 9 …… Water absorption part, 10 …… Set pin 11 …… Water absorption hose, 12 …… Coupling 13 …… Auxiliary sponge, 14 …… Set screw 15 …… Auxiliary caster, 16 …… Front wheel 17 …… Stop pin, 18 …… Lock mechanism 19 …… Release wire, 20 ...... Spring 21 …… Bracket, 22 …… Motor 23 …… Chain, 24 …… Pump for supplying wash water 25 …… Water supply hose, 26 …… Water supply hose 27 …… Wiping cloth, 28 …… Porous rubber belt 29 …… Pressing spring, 30 …… Timing pulley 31 …… Timing belt, 32 …… Pressing roller 33 … Kide roller, 34 …… Wipe cloth take-up motor 35 …… Sprocket, 36 …… Take-up roller 36 ′ …… Feed roller, 37 …… Porous rubber drive motor 38 …… Sprocket, 39 …… Tensioner 40 …… Drive Wheel, 41 …… Drive shaft 42 …… Traveling motor, 43 …… Operating handle 44 …… Pressing cam, 45 …… Operating lever 46 …… Grip, 48 …… Spring 49 …… Suction blower, 51 …… Recovery tank 52 …… Mist removal device, 52a …… HEPA filter 53 …… Switching lever, 56 …… Water supply pool

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuo Hara 5-5-12 Ginza, Chuo-ku, Tokyo Stockholders nuclear power agency (72) Inventor Shuji Kawamura 5561 Sakura, Hamaoka-cho, Ogasa-gun, Shizuoka Stock company Nuclear power agency Hamaoka Plant (56) Reference JP 60-63499 (JP, A) Actual development 58-63599 (JP, U) Actual development 61-79300 (JP, U)

Claims (1)

[Claims] 1. A cleaning brush (2) provided on the lower front portion of the machine body.
And a water absorption part (9) provided behind the cleaning brush (2),
The cleaning unit (a) including the front wheel (16) and the auxiliary caster (15) provided at the rear of the water absorption unit (9) and the wiping cloth (27) at the lower part provided at the rear of the cleaning unit (a) The wiping part is provided at the rear of the wiping part unit (b) having the paper feed roller (36 ') and the winding roller (36) of the wiping cloth (27) on the upper part and the wiping part unit (b). A drive unit (c) that is provided and is operated by the operation handle (43) and that can raise and lower the drive wheel (40) by operating the operation lever (45).
And a washing water recovery tank (51), suction air mist removing device (52) and HEPA filter (52
In a floor cleaning / wiping decontamination machine comprising a water supply and suction part (d) provided with a), the cleaning part unit (a) is a cleaning brush (2) attached to a removable rotary shaft (4). )
And a water absorbing part (9) elastically attached to the rear of the cleaning brush (2) and provided with an auxiliary sponge (13), and a water absorbing part (9) provided behind the water absorbing part (9) for moving the front wheel (16) and Alternatively, the cleaning unit (a) is composed of an auxiliary caster (15) as a front supporting device that replaces the front wheel (16) when parts are replaced, and the cleaning unit (a) is provided with an operating lever (4) provided on the drive unit (c).
By operating the grip (46) provided in 5), the lock mechanism (18) is released via the release wire (19), and it is attached to the bracket (21) that can be flipped up diagonally to be unitized, Cleaning in the floor cleaning and wiping decontamination machine (A) in a nuclear facility, characterized in that the auxiliary caster (15) is configured to contact the floor at the same time as the cleaning unit (a) is flipped up. Structure of partial unit (a).