JPH0675116B2 - Structure of the wiping unit in the floor cleaning / wiping decontamination machine in a nuclear facility - Google Patents

Description

The present invention relates to the structure of a wiping 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 intends to provide a wiping unit in a cleaning / wiping decontamination machine, which is further improved, the structure is simplified, labor is saved, and mechanization is further improved.

(Solution by the Invention) A cleaning brush 2 provided at the lower front portion of the machine body, a water absorbing portion 9 provided behind the cleaning brush 2, and a front wheel provided behind the water absorbing portion 9.
16 and a cleaning section unit a including an auxiliary caster 15 as a supporting device that replaces the front wheel 16 when moving or replacing parts, and a cleaning section provided at the rear of the cleaning section unit a and having a wiping cloth 27 at the bottom. The wiper unit b provided with the paper feed roller 36 ′ and the take-up roller 36 of the wipe cloth 27, and provided behind the wiper unit b, operated by the operation handle 43, and operated by the operation lever 45. A drive unit c capable of moving the drive wheels 40 up and down, a wash water recovery tank 51, a suction air mist removing device 52, and a HEPA filter provided on the upper part of the machine body.
In a floor cleaning / wiping decontamination machine comprising a water supply and suction part d provided with 52a, the wiping part unit b is integrated with a wipe cloth feeding / winding mechanism and is provided at the bottom of the machine body 1. The wiping cloth 27 is attached so that the rotating porous rubber belt 28 is pressed by a pressing spring 29 via a pressing roller 32 to give a surface pressure, and the rotation of the porous rubber belt 28 is set in a pressing mechanism. Timing pulley
The rotation of 30 is transmitted to the timing belt 31 mounted inside the porous rubber belt 28 so as to be driven.

(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). After briefly explaining each unit other than the wiping unit of the decontamination machine, the detailed configuration of the wiping unit according to the present invention will be described.

This decontamination machine is roughly classified into a) a cleaning brush, a cleaning section unit including a water absorption section, front wheels and auxiliary casters, b) a wiping section unit including a wiping section and a wipe cloth feeding / winding mechanism,
c) A drive unit including a traveling drive mechanism and a direction control mechanism, d) Wash water supply and suction units.

i) Cleaning unit a: The water spray nozzle 3, the cleaning brush 2 and the water absorbing unit 9 which form the cleaning unit a are integrated as one unit (FIG. 4) and are attached to the lower front part of the machine body 1. ing.

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 is controlled by the control unit 43 'provided on the rear operation handle 43.
Can be done at

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 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 a coupling 12. The water absorbing portion 9 can be easily removed by removing the retaining pins 10 of the left and right spring mechanisms. Reference numeral 13 is an auxiliary sponge (Fig. 9), and this auxiliary sponge 13 can be easily removed by removing the stopper screw 14 at one end and lowering it.

In addition, during movement, the cleaning unit a moves together with the bracket 21 by the spring 20 as shown by the dashed line in FIG.
It can be pulled forward and upward. At that time, a mechanism that pushes down the auxiliary caster 15 supporting the front part of the apparatus instead of the front wheel 16 works, and the auxiliary caster 15 comes out downward at the same time when the cleaning unit a is pulled up. In addition,
The auxiliary caster 15 is raised 30 mm during decontamination, and is projected 50 mm downward during movement.

In order to push down the auxiliary caster 15, since the weight applied to the front wheel 16 is pushed up, 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 a direction in which the surface pressure of the brush 2 and the suction auxiliary sponge 13 becomes weak. .

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 a is flipped up as shown by the phantom line in FIG.

In these operations, when the grip 46 attached to the operation lever 45 shown in FIG. 12 is gripped, the lock mechanism is released, and when the operation lever 45 is further pulled down, the cleaning unit a is flipped up like a virtual line.

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.

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 wheel 40 as the rear wheel, the water absorption part 9 and the wipe 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 wheels 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 spring
The drive unit c descends against 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. In addition, 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 wiping unit b according to the present invention will be described.

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 is such that the porous rubber belt 28 capable of responding to the unevenness of the rotating floor surface is pressed by the pressing spring 29 via the pressing roller 32 to give the surface pressure. Has become.

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. 37 is a porous rubber drive motor, sprocket 38 (Fig. 11)
The timing pulley 30 is driven via. 39 is a tensioner.

(Effect) Since the wiping unit b has the wiping unit and the wipe cloth feeding / winding mechanism integrated with each other and is detachably attached to the lower portion of the machine body 1, it is independent of other units a, c, d and the like. , Only the wiping unit b can be replaced.

The wiping unit presses the porous rubber belt 28 with the pressing spring 29 to apply surface pressure with the pressing roller 32, and the rotation of the porous rubber belt 28 is set by rotating the timing pulley 30 set in the pressing mechanism inside the porous rubber belt 28. I told the timing belt 31
The extremely reliable wiping cloth 27 can be wound and fed, and the floor surface can be surely wiped.

[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 9,9 ′ …… Water absorption part, 10 …… Stop pin 11 …… Suction hose, 12 …… Coupling 13 …… Auxiliary sponge, 14 …… Stop screw 15 …… Auxiliary caster, 16 …… Front wheel 17 …… Stop pin, 18 …… Lock mechanism 19 …… For releasing Wire, 20 …… Spring 21 …… Bracket, 22 …… Motor 23 …… Chain, 24 …… Cleaning water supply pump 25 …… Water supply hose, 26 …… Water supply hose 27 …… Wipe cloth, 28… … Porous rubber belt 29 …… Pressing spring, 30 …… Timing pulley 31 …… Timing belt, 32 …… Pressing roller 3 3 …… Guide roller, 34 …… Wiping cloth take-up motor 35 …… Sprocket, 36 …… Take-up roller 36 ′ …… Paper 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 removing device, 52a …… HEPA filter 53 …… Switching lever, 56,56 ′ …… Water supply pool

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Mitsuo Hara 5-5-12 Ginza, Chuo-ku, Tokyo Stock company nuclear agency (72) Inventor Noriaki Ueda 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 absorbing part (9) provided behind the cleaning brush (2), a front wheel (16) provided behind the water absorbing part (9), and a support device replacing the front wheel (16) when moving or replacing parts. The cleaning section unit (a) including the auxiliary casters (15), the cleaning section provided at the rear of the cleaning section unit (a) with the cleaning cloth (27) at the lower part, and the cleaning cloth (27) supplied at the upper part. A wiping unit (b) including a paper roller (36 ') and a winding roller (36),
A drive unit (c) which is provided at the rear of the wiping unit (b), is operated by the operation handle (43), and is capable of moving up and down 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 section (d) provided with a), the wiping section unit (b) is
The wipe cloth (27) is attached to the lower part of the machine body (1) integrally with the wipe cloth feeding / winding mechanism, and the wipe cloth (27) rotates the porous rubber belt (28) through the pressing roller (32) and presses the spring ( The surface of the porous rubber belt (28) is rotated by pressing the timing pulley (30) that is set in the pressing mechanism inside the porous rubber belt (28). The structure of the wiping unit in a floor cleaning / wiping decontamination machine in a nuclear facility characterized by being driven by transmission to a timing belt (31)