JPS63124997A - Structure of drive section unit in washing and smear decontaminator for floor in nuclear power facility - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to the structure of a drive unit in a floor cleaning/wiping/decontamination machine in a nuclear facility.

(Prior Art) At nuclear power plants, etc., equipment is periodically inspected in order to ensure healthy and stable operation of the power plant. At this time, the floor surface may be contaminated.

In the past, decontamination of contaminated floors often relied on manual labor.

(Problems to be solved by the invention) In view of the mentioned prior art, the applicant first improved the mentioned prior art and created an invention entitled "Floor cleaning/wiping decontamination machine in nuclear facility". (Patent application Sho 6l-1391)
74). The present invention further improves this and makes the structure more W1.
Cleaning and cleaning with improved labor savings and mechanization for each task
The present invention aims to provide a drive unit for a wiping and decontaminating machine.

(Solution by the Invention) A cleaning unit including a cleaning brush, a water absorption unit, a front wheel, and an auxiliary caster provided at the front of the lower part of the machine body, and a wiping unit including a wiping unit and a wiping cloth feeding/winding mechanism. , a floor cleaning/wiping decontamination machine consisting of a drive unit including a travel drive mechanism and a direction control mechanism, and a water supply and suction device provided on the upper part of the machine, in which the drive unit is driven by a travel motor. The drive unit is configured to be movable up and down by a push-down cam which is elastically attached to the fuselage by a spring and can be operated by an operating lever, and the operating handle is operated by the operating lever. is linked to the lifting of the cleaning unit and the pushing down of the auxiliary casters.

(Example) The first same-sex item A is the cleaning and
This is a wiping decontamination machine (hereinafter simply referred to as a decontamination machine). Each unit other than the drive section of this decontamination machine will be briefly explained below, and then the detailed configuration of the drive section unit according to the present invention will be explained.

Now, this decontamination machine can be broadly divided into a) a cleaning section unit that includes a cleaning brush, a water absorption section, a front wheel, and auxiliary casters, and b)
A wiping unit unit including a wiping unit and a wiping cloth feeding/winding mechanism; C) a drive unit including a traveling drive mechanism and a direction control mechanism; d) a cleaning water supply and suction device... There is.

i) Regarding the cleaning unit: The water nozzle, cleaning brush, and water absorption unit that make up the cleaning unit a are integrated as one unit (FIG. 4), and are attached to the front lower part of the fuselage 1.

Water is sprayed from four low-flow water spray nozzles 3 (FIG. 2) provided in the front upper width direction of the cleaning brush 2, with an average spray of cleaning water having a fan-shaped spread of about 60 degrees. The flow rate can be controlled by a control section 43' provided on the rear operating handle 43.

The cleaning brush 2 is divided into three parts in the middle as shown in FIG. 6, and can be easily removed from the unit by removing the one-rotation shaft 4. In FIG. 6, the rotating shaft 4 is driven by a chain via a sprocket 5. and middle 2
It is supported by a support stay 7 equipped with a bearing mechanism 6 at two locations. If a cleaning brush is provided on the outside of the sprocket 5 as shown in FIGS. 5 and 7, it is safe because the sprocket 5 can be placed inside the device and protrusions such as a chain will not come out. 8 is a set screw.

The water absorption part 9 is supported by left and right retaining pins 10 as shown in FIG. 8, and the part connected to the suction hose 11 is connected to a coupling 12.
It is detachably connected. The water absorption part 9 can be easily removed by removing the retaining pins 1o of the left and right spring mechanisms. 13 is an auxiliary sponge (FIG. 9), and this auxiliary sponge can be easily removed by removing the stopper 14 at one end and lowering it.

Further, when moving, the cleaning section unit a can be pulled back and upward by about 45 degrees along with the bracket 21 by the spring 20, as shown by the two-dot chain line in FIG. At this time, a mechanism that pushes down the auxiliary casters 15 operates, and the auxiliary casters 15 come out downward at the same time as the cleaning section unit a is pulled up. In addition, the auxiliary casters 15 are raised by about 30 I during decontamination, and about 50 na are applied during movement.

In order to push down the auxiliary casters 15, the weight on the front wheels 16 must be pushed up, so the auxiliary casters 1
Attach an auxiliary mechanism to lower 5 with a push spring. For that reason,
When storing the auxiliary casters 15, the casters 15 try to extend downward, but when you try to hold it down, the brush 2
Force is applied in a direction that weakens the surface pressure of the suction auxiliary sponge 13.

Therefore, as shown in FIG. 4, when the auxiliary casters 15 are stored, a locking mechanism 18 is activated by a stopper pin 17 to fix them. Note that the locking 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 locking mechanism 18, and then the auxiliary caster 15 is pushed downward.

At this time, as a matter of course, the cleaning section unit is flipped up as shown by the imaginary line.

Note that these operations are performed using the operation bar 45 shown in FIG.
The locking mechanism is released by squeezing the grip 46 attached to the
When the operating lever 45 is further pulled down, the cleaning section unit is flipped up as shown by the imaginary line.

A motor 22 is attached to the bracket 21 and drives the sprocket 5 of the cleaning brush 2 via a chain 23. Reference numeral 24 designates a washing water supply pump which is also provided on the bracket 21 and communicates with the water nozzle 3 and the water tank 56 via hoses 25 and 26.

ii) Regarding the wiping unit; The wiping unit is integrated with the wiping cloth feeding/winding mechanism and is attached to the lower part of the machine body 1.

As shown in FIGS. 10 and 11, the mechanism for pressing the wiping part 27 is such that a rotating porous rubber belt 28 that can handle unevenness is pressed by a pressing spring 29, and surface pressure is applied by a pressing roller 32. There is.

Further, the rotation of the porous rubber belt 28 is driven by transmitting the rotation of a timing pulley 30 set in a pressing mechanism to a timing belt 31 attached inside the porous rubber belt 28.

This prevents the drive transmission mechanism from protruding to the outside.

33 is a guide roller, and 34 is a wiping cloth take-up motor which drives a take-up roller 36 via a sprocket 35. A porous rubber drive motor 37 drives the timing pulley 30 via a sprocket 38. 39 is a tensioner.

■) Regarding water supply and suction equipment; Decontamination wastewater is collected by the suction blower 49 mounted on the top of the aircraft 1.
(FIG. 13), it is sucked and collected into the collection tank 51 via the suction hose 5o. Further, the suction air is discharged after passing through the mist removal device and the HEPA filter 52, and the structure is such that the waste liquid can be forced out from the drainage nozzle by operating the lever 53.

Next, the drive unit according to the present invention will be explained.

The rear drive wheels have an integrated structure that is independent from the fuselage (Figure 12). 41 is the drive wheel, which causes the drive #
4. Drive O. By using the rear wheels as the driving wheels, it is possible to narrow the space between the water absorbing portion 9 and the wiping cloth 27, and the center of gravity can also be moved rearward. In addition, since the drive mechanism is integrated with the rear wheel 40, the direction control is also a mechanism that changes the angle up to about 30 degrees left and right for each integrated unit.
Like the wiping unit b, this also has a structure that is suspended from the body 1. 42 is a travel motor.

In order to push up 50nW rearward during movement, the space between the fuselage 1 and the drive unit C must be pushed open by 50nwn with the push-down cam 44. By linking this operation with the operation of pulling up the cleaning unit a and pushing down the auxiliary casters 15, a series of ground release operations can be performed at the rear. By pulling down the operating lever 45, the push-down cam 44 rotates, and the drive unit C moves down against the spring 48.

On the other hand, when it is desired to temporarily release the grounding of the cleaning brush 2, water absorption part 9, and wiping cloth 27 during decontamination work, such as when changing direction, the grounding release operating lever 45 is stopped by half-operating. Then, the grounding of each part is about half (the suction part is about 6511I11,
The wiping cloth is released by about 25+ nm), and the auxiliary casters 15 of the front wheels are lowered by about 15 nm.

(Effects) The drive unit is elastically attached by a spring, has a drive wheel driven by a travel motor, has an operating handle, and is configured to be movable up and down by a push-down cam that can be operated with an operating lever. In addition, since the operation of the operating lever is linked with the lifting of the cleaning section unit and the pushing down of the auxiliary casters, the following effects are achieved.

1) By using the rear wheels as the driving wheels, it is possible to narrow the space between the water absorption part and the wiping cloth, and the center of gravity can also be moved rearward.

2) Since the drive mechanism is integrated with the rear shaft, directional control can also be performed for each integrated unit.

3) By linking the pushing down of the drive unit with the operation of pulling up the cleaning unit a and pushing down the auxiliary casters 15, it is convenient because a series of ground release operations can be performed at the rear.

4) When you want to temporarily release the grounding of the cleaning brush, water absorption part, and wiping cloth during decontamination work, such as changing direction, you can manually stop the grounding release operation lever 45, which also improves repeatability. This contributes to improvement.

[Brief explanation of the drawing]

Figure 1 is an overall perspective view of the decontamination machine. Figure 2 is also a side view. Figure 3 is also a plan view. FIG. 4 is a side view of the cleaning section unit. Figure 5 is also a partially cutaway front view. Figure 6 shows the cleaning brush. FIG. 7 shows another example of the cleaning brush. FIG. 8 is a front view of the water absorption unit. Figure 9 is also a side view. FIG. 10 is a side view of the wiping unit. FIG. 11 is a sectional view as well. FIG. 12 is a side view of the drive section. FIG. 13 is a front view of the recovery tank unit. FIG. 14 is a plan view as well. In the figure: A cleaning wiping and decontamination machine a cleaning unit b wiping unit C drive unit d water supply and cleaning water suction device 1 body 2 cleaning brush 3 watering nozzle 4 rotating shaft 5 sprocket 6 bearing mechanism 7 support stay 8 Locking screw 9 Water absorption part 10 Locking pin 11 Water absorption hose 12 Coupling 13 Auxiliary sponge 14 Stopper 15 Auxiliary caster 16
Front shaft 17 Lock pin 18 Lock mechanism 19 Release wire 20 Spring 21
Bracket 22 Motor 23 Chain 24 Cleaning water supply pump 25 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
Kite roller 34 Wiping cloth take-up motor 35
Sprocket 36 Take-up roller 37 Porous rubber drive motor 38 Sprocket 39 Tensioner 40
Rear @ 41 Drive wheel 42 Travel motor 43 Operation handle 44
Push-down cam 45 Operation lever 46 Grip 48 Spring 49 Suction blower 50 Suction hose 51 Recovery tank
52 Mist removal 52a tlEPA filter
53 Switching lever and above Applicant: Chubu Electric Power Co., Ltd. (1 other person) Agent: Isamu Ohashi, patent attorney Figure 6 Figure 7 Figure 12 Figure 13 Figure 14

Claims (1)

[Claims] A cleaning section unit including a cleaning brush provided at the lower front part of the machine, a water absorption section, a front wheel, and auxiliary casters, a wiping section unit including a wiping section and a wiping cloth feeding/winding mechanism, and a traveling drive mechanism and direction. In a floor cleaning/wiping decontamination machine consisting of a drive unit including a control mechanism and a water supply and suction device installed on the upper part of the machine, the drive unit has a drive wheel driven by a travel motor and an operation The drive unit is configured to be movable up and down by a push-down cam that has a handle and is elastically attached to the body by a spring and that can be operated with a control lever, and the operation of the control lever is used to pull up the cleaning unit. Cleaning and cleaning of floors in nuclear facilities characterized by interlocking with the push-down operation of auxiliary casters.
Structure of the drive unit in a wiping decontamination machine.