JP2019098290A - Cleaning device and in-furnace working device - Google Patents

Abstract

To obtain a cleaning device which has a simple structure, is operated with no drive mechanism, and can remove and clean an adhered substance from a cleaning object surface.SOLUTION: A cleaning device 30 has: a support plate 4 which is fitted to a travel unit 21; a brush 1 which is rotatably supported by the support plate 4, is rotated in a transverse direction with respect to a surface of a cleaning object 20, and removes an adhered substance on the surface of the cleaning object 20; and driving means for rotationally driving the brush 1. The driving means is driving means by which the brush 1 is rotated in the transverse direction with respect to the cleaning object surface in linkage with relative movement between the travel unit 21 and the cleaning object 20.SELECTED DRAWING: Figure 1

Description

  Embodiments of the present invention relate to a cleaning device and an in-furnace working device for cleaning the surface of a structure on a track.

  For example, the following apparatus has been proposed as a cleaning apparatus for cleaning a substance deposited on a structure.

  Patent Document 1 discloses a cleaning device attached to a movable body in a transport facility including a movable body that moves along a guide rail, the longitudinal direction (drive direction) of the guide rail along with the movement of the movable body. A driven roller which rotates in a frame, a frame provided with a bearing for supporting the rotation shaft of the driven roller, a bevel gear attached to the rotation shaft of the driven roller, and a transmission shaft provided with a driven gear engaged with the bevel gear. And a brush portion attached to the transmission shaft, wherein the brush portion cleans the side surface of the guide rail by rotating along with the movement of the movable body, and the frame is formed detachably with respect to the movable body The configuration being described is described.

  Further, Patent Document 2 describes a cleaning device that rotates while pressing a brush against a structure to drop radioactive substances attached to the structure.

JP 2012-148838 A Japanese Patent Application Laid-Open No. 62-95188

  For example, in an in-core working robot under a high radiation environment, radioactive substances such as metal particles attached to the surface of the robot become a high level radiation source. In addition, in the case of a moving object such as a robot, radioactive substances attached to the surface may enter the inside of the mechanism, making it difficult to carry out external decontamination. Therefore, it is desirable to remove radioactive materials attached to the surface of the in-core working robot as much as possible.

  In such a case, there is a method of attaching a brush or the like to the boundary to prevent the entry of the radioactive substance so that the radioactive substance does not enter inside the mechanism. However, it was difficult to completely remove heavy radioactive materials such as metal particles simply by attaching a brush.

  Patents 1 and 2 are devices for pressing a brush against an object to be cleaned such as a wall or a rail as a patent relating to cleaning, but an additional large machine for suspending the device is required, and Since the guide rail is rotated in the longitudinal direction (drive direction) and cleaned along with the movement, there is a possibility that the cleaned deposit may stagnate between the brush and the moving body.

  As described above, the above-described cleaning device requires an additional large-sized machine, and there is a problem that the size of the device itself is increased, and operation in a narrow environment is difficult. In addition, the cleaning device itself needs a drive mechanism, and there are also problems with complication of the equipment and securing of a power supply source.

  The cleaning device according to the present embodiment is rotatably supported by the support plate attached to the traveling device and the instruction plate, and is rotated in the lateral direction with respect to the surface of the object to be cleaned. The brush has a brush for removing the adhering substance, and a driving means for rotationally driving the brush, and the driving means is interlocked with relative movement between the traveling device and the object to be cleaned. The brush is characterized in that it is a drive means that rotates in the lateral direction with respect to the surface of the object to be cleaned.

  The in-furnace work apparatus according to the present embodiment is characterized in that the cleaning apparatus is provided on the front side in the driving direction.

  The cleaning device and the in-furnace working device according to the embodiment of the present invention are made to solve the above-described problems, and have a simple structure, operate without a drive mechanism, and adhere from the surface of the cleaning object The substance can be removed and cleaned.

BRIEF DESCRIPTION OF THE DRAWINGS The top view which shows Example 1 of the cleaning apparatus which concerns on this invention. BRIEF DESCRIPTION OF THE DRAWINGS The front view which shows Example 1 of the cleaning apparatus which concerns on this invention. BRIEF DESCRIPTION OF THE DRAWINGS The side view which shows Example 1 of the cleaning apparatus which concerns on this invention. The vertical drive mechanism shown in FIG. 1 is shown, (a) is an enlarged plan view, (b) is a side view. The top view which shows Example 2 of the cleaning apparatus which concerns on this invention. The AA arrow sectional view of FIG. 5 which shows the cleaning apparatus which concerns on Example 2. FIG. The top view which shows Example 3 of the cleaning apparatus which concerns on this invention. The vertical drive mechanism and tension adjustment mechanism which were shown in FIG. 7 are shown, (a) is an enlarged plan view, (b) is a side view.

  Hereinafter, an embodiment of a cleaning device according to the present invention will be described with reference to the drawings.

Example 1
A first embodiment of the present invention will be described with reference to FIGS. 1 to 4.

  1 is a plan view of the cleaning device, FIG. 2 is a front view of the cleaning device, and FIG. 3 is a side view of the cleaning device.

  The cleaning device 30 according to the first embodiment is configured of the circular brushed roller 1 and the roller rotating gear 2 meshing with the rack gear 3 provided on the decontamination (cleaning) object 20. The roller support plate 4 and the vertical drive mechanism with respect to the in-furnace working device (in-furnace working robot) 21 so that the brush 22 comes in contact with the decontamination target 20 which is the track (structure) of the in-furnace working device 21 10 is attached. A gear 23 meshing with the roller rotating gear 2 is provided around the circular brushed roller 1.

  In view of the fact that the brush 22 of the circular brushed roller 1 is softer than the object to be decontaminated 20 and harder than the adhesion of the deposit, a brush made of, for example, polyetheretherketone (PEEK) or stainless steel is applicable.

  The vertical drive mechanism 10 is a cylindrical spacer attached to the roller support plate 4 as shown in FIG. 4, and has a corrugated spacer 11 whose end is machined into a corrugated shape, and can be freely pivoted within the corrugated spacer 11. A pin 12 is provided so as to protrude from the supported rotation shaft 24, and a spring 13 is mounted between the rotation shaft 24 of the circular brush roller 1 and the roller support plate 4. The corrugated spacer 11 is fitted on the rotation shaft 24 of the circular brush roller 1, and the pin 12 is disposed so as to contact the lower end of the corrugated spacer 11 by the spring 13.

  The cleaning device 30 configured in this way does not have a power source in the main body of the apparatus, but the object to be decontaminated 20 and the circular brushed roller 1 are connected via the rack gear 3, the gear 2 for roller rotation and the gear 23. When the relative movement between the object to be decontaminated 20 and the in-furnace working device 21 is generated by the movement of the in-furnace working device 21, the circular brushed roller 1 is disposed around the circular brushed roller 1. It is configured to rotate via the provided gear 23.

  The roller rotation gear 2 is attached to the in-furnace working device 21 or the roller support plate 4 as shown in FIGS. 2 and 3, and the gear diameter or gear for changing the rotational speed of the circular brushed roller 1. The ratio may be changed.

  When the cleaning device 30 moves on the object to be decontaminated along with the in-furnace working device 21, the roller rotating gear 2 attached to the cleaning device 30 and the rack gear 3 attached to the object to be decontaminated 20 In conjunction with the movement of the in-furnace work device 21, the circular brushed roller 1 is rotated in the lateral direction about an axis perpendicular to the surface of the object to be cleaned 20. By this rotational force, the attached material on the object to be decontaminated 20 is swept by the brush 22 in the left and right direction of the surface of the object to be cleaned 20 as shown by arrow B in FIG. It can be swept out.

  Also, when the circular brushed roller 1 rotates, the lower end of the wave-shaped spacer 11 attached to the roller support plate 4 by the vertical drive mechanism 10 shown in FIG. 4 is attached to the rotation shaft 24 of the circular brushed roller 1 The pin 12 rotates while being guided. Therefore, the circular brushed roller 1 performs an operation of sweeping the object to be decontaminated 20 by the brush 22 while performing rotational motion and vertical motion. Further, instead of the gear 2 for rotating the roller and the rack gear 3, the roller is directly pressed against the roller with circular brush 1 and the object to be decontaminated 20 and the circular brushed roller 1 is moved by the movement amount of the object to be decontaminated 20 by the frictional force. You may rotate it.

  Although this cleaning device has been described as an example applied to the in-core working robot, it may be provided for a traveling device having rails or the like, an automated device, an inspection device in the reactor, and the like.

  According to the cleaning device of the first embodiment, even in a narrow furnace environment, it is possible to drive without requiring additional power such as a motor. It is possible to sweep away deposits such as dust in the width direction (lateral direction as viewed from the direction of travel) with respect to the direction of travel of the decontamination (cleaning) object 20 in relation to the direction of rotation of the circular brush. Since the object to be decontaminated 20 is in contact with it, a high decontamination effect can be obtained. In addition, the cleaning device imitates the action of human being sweeping with a brush by the rotational movement and the up and down movement of the brush-equipped roller 1, and the impact force when the brush strikes the surface of the object to be decontaminated 20 The generation of the restoring force when pressed against 20 makes it possible to strongly sweep away heavy radioactive materials such as metal particles from the object to be decontaminated.

(Example 2)
Next, a second embodiment of the present invention will be described using FIGS. 5 and 6. FIG. 5 is a plan view showing the cleaning device in the second embodiment, and FIG. 6 is a sectional view taken along the line AA in FIG. In FIGS. 5 and 6, the same components as those in FIGS. 1 and 2 are designated by the same reference numerals, and the description of the configuration of those portions is omitted.

  As shown in FIGS. 5 and 6, in the cleaning device 31 according to the second embodiment, the doughnut-shaped brush-equipped roller 5 in which the brush is not disposed at the central portion is employed. The roller support plate 4 is attached to the in-furnace working device 21 so that the brush 25 of the doughnut-shaped brush-equipped roller 5 contacts the object to be decontaminated 20.

  In FIG. 5, the cleaning device 31 according to the second embodiment has no power source, and the object to be decontaminated 20 and the toroidal brushed roller 5 are connected from the gear 2 for roller rotation and the rack gear 3 through the gear 23. When the relative movement between the object to be decontaminated 20 and the in-furnace working device 21 is generated by the movement of the in-furnace working device 21, the toroidal brushed roller 5 is an object to be cleaned via these gears. It is configured to rotate laterally (in the direction of arrow B) about a rotation axis 24 perpendicular to the surface 20. Unlike the circular brushed roller 1 of the first embodiment, the toroidal brushed roller 5 has a donut shape. By making the inner diameter larger than the width in the cleaning direction (lateral direction) of the object to be decontaminated 20, the deposits such as radioactive substances can be swept to the left and right of the object to be decontaminated 20 without being accumulated in the brush 25 it can.

  The roller rotation gear 2 is attached to the in-furnace working device 21 or the roller support plate 4, and the gear diameter or gear ratio may be changed to change the rotational speed of the roller 5 with the toroidal brush.

  In addition, although this cleaning device has been described as an example applied to the in-core working robot, it can also be provided for a traveling device having rails or the like, an automation device, an inspection device in the reactor, and the like.

  According to the cleaning device according to the second embodiment, since the doughnut-shaped brush 25 has no brush on the rotation center side, it is no longer possible to deposit deposits such as radioactive substances on the object to be decontaminated 20 and in the brush. And can reduce the radiation dose of workers during maintenance of the cleaning device.

  In addition, due to the rotational direction of the circular brush 25, it is possible to sweep away deposits such as dust not in the longitudinal direction (traveling direction) of the object to be decontaminated 20 but in the width direction (lateral direction to the surface of the cleaning object). Since the surface of the object to be decontaminated 20 is swept twice at the position of the tip and the roller support plate 4 in the advancing direction by one traveling, a high decontamination (cleaning) effect can be obtained.

(Example 3)
Next, a third embodiment of the present invention will be described with reference to FIGS. 7 and 8. 7 is a plan view of the cleaning device according to the third embodiment, FIG. 8 shows the vertical drive mechanism and the tension adjustment mechanism shown in FIG. 7, (a) is an enlarged plan view, and (b) is a side view. 7 and FIG. 8, the same parts as in FIG. 1 and FIG.

  As shown in FIGS. 7 and 8, the cleaning device 32 according to the third embodiment includes the brush 6, the roller chain 26 connected to the brush 6, the roller rotation drive gear 7, the roller rotation driven gear 8, and the rack gear 3 A T-shaped roller support plate 9 is attached to the in-furnace working device 21 so that the brush 6 contacts the object to be decontaminated 20.

  In FIG. 7, the cleaning device 32 according to the third embodiment does not have a power source, and the object to be decontaminated 20 and the roller chain 26 are connected via the roller rotation drive gear 7 and the rack gear 3. When a relative movement occurs between the object to be decontaminated 20 and the in-furnace working device 21 by the movement of the roller chain 26, the roller chain 26 is configured to rotate via these gears 3 and 7.

  The support plate 9 and the roller rotation drive gear 7 are restrained by the vertical drive mechanism 10 shown in FIG. The vertical drive mechanism 10 includes a wave-shaped spacer 11 attached to the support plate 9, a pin 12 attached to the roller rotation drive gear 7, and a spring 13 attached between the support plate 9 and the roller rotation drive gear 7. It is composed of The corrugated spacer 11 is fitted to the roller rotation driving gear 7, and the pin 12 is in contact with the lower end of the corrugated spacer 11 by the spring 13.

  The support plate 9 and the roller rotation driven gear 8 are restrained by a tension adjustment mechanism 14 shown in FIG. 8 in addition to the vertical drive mechanism 10.

  The tension adjustment mechanism 14 is configured by bolting the wave-shaped spacer 11 fitted with the roller rotation driven gear 8 and the support plate 9 in a long hole 15 formed in the support plate 9. The tension adjustment mechanism 14 can move the roller rotation driven gear 8 in the left and right direction of FIG. 8A by loosening a bolt (not shown), and performs tension adjustment and attachment / removal of the roller chain 26. Is possible.

  The roller rotation drive gear 7 is attached to the in-furnace working device 21 or the support plate 9, and the gear diameter or gear ratio may be changed to change the rotational speed of the brush 6 and the roller chain 26.

  In addition, although the cleaning device 32 has been described as an example applied to the in-core working robot, it may be provided for a traveling device having rails or the like, an automation device, an inspection device in the reactor, and the like.

  According to the cleaning device according to the third embodiment, since the decontamination (cleaning) can be carried out up to the time of the in-furnace working device 21 on the decontamination (cleaning) object 20, radioactive substances to the inside of the in-furnace working device 21 Erosion of dust etc. can be suppressed.

(Example 4)
Next, a fourth embodiment of the present invention will be described. In the fourth embodiment, the same parts as those of the first embodiment are indicated by the same reference numerals and the explanation of the parts of the configuration is omitted.

  In the fourth embodiment, a sliding mechanism in the axial direction is provided on the rotary shaft 24 to which the circular brushed roller 1 is connected, and an ultrasonic transducer (not shown) provided on the rotary shaft 24 or the circular brushed roller 1 The brush 6 is vibrated in the direction of rotation or in the direction perpendicular to the rotation axis.

  According to the cleaning device of the fourth embodiment, in addition to the action of sweeping the brush by the vertical drive mechanism, a stronger impact force can be obtained when striking the surface by the vibration by the ultrasonic transducer, and the radioactive substance is further enhanced. Can be swept out.

  While certain embodiments of the present invention have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the invention.

  These embodiments can be implemented in other various forms, and various omissions, substitutions, changes, and combinations can be made without departing from the scope of the invention.

  These embodiments and modifications thereof are included in the invention described in the claims and the equivalents thereof as well as included in the scope and the gist of the invention.

DESCRIPTION OF SYMBOLS 1 ... Roller with circular brush 2 ... Gear for roller rotation 3 ... Rack gear 4 ... Roller support plate 5 ... Roller with donut shape brush 6 ... Brush 7 ... Chain rotation drive gear 8 ... Chain rotation driven gear 9 ... Roller support plate 10 ... Up and down Drive mechanism 11 ... Wave spacer 12 ... Pin 13 ... Spring 14 ... Tension adjustment mechanism 15 ... Long hole 20 ... Decontamination target (cleaning target)
21 ・ ・ ・ In-core working device (traveling device)
22 ... brush 23 ... gear 24 ... rotating shaft 25 ... brush 26 ... roller chain 30 ... cleaning device 31 ... cleaning device 32 ... cleaning device

Claims (11)

A support plate attached to the traveling device,
A brush rotatably supported on the indication plate and rotated laterally with respect to the surface of the object to be cleaned to remove the adhered substances on the surface of the object;
And driving means for rotationally driving the brush.
The cleaning device is characterized in that the driving means is a driving means which rotates the brush in the lateral direction with respect to the surface of the cleaning object in conjunction with relative movement between the traveling device and the cleaning object. . The drive means is a rack gear provided to the object to be cleaned;
2. A cleaning apparatus according to claim 1, further comprising: a gear which meshes with the rack gear and rotationally drives the brush.   The driving means comprises a gear provided around a roller supporting the brush, a rack attached to the object to be cleaned, and a gear for rotating the roller meshing with the rank and the gear. The cleaning device according to claim 1, characterized in that The brush is rotatably supported by a vertical drive mechanism,
The vertical drive mechanism is a cylindrical spacer attached to the support plate side, and a corrugated spacer whose end is processed into a corrugated shape, and a roller rotatably supported in the corrugated spacer and holding the brush The cleaning device according to any one of claims 1 to 3, wherein the cleaning device comprises a pin protruding from the rotational shaft of the roller and a spring attached between the rotational shaft of the roller and the support plate.   5. The brush according to any one of claims 1 to 4, wherein the brush is provided with an ultrasonic transducer on the rotation axis of the brush, and the brush is vibrated in the direction of the rotation axis of the brush or in the direction perpendicular to the rotation axis. Cleaning device as described in.   The cleaning device according to any one of claims 1 to 5, wherein the brush is a circular brush integrated with a gear.   The cleaning device according to any one of claims 1 to 5, wherein the brush is a doughnut-shaped brush whose inner diameter is equal to or larger than the width of the cleaning direction of the object to be decontaminated.   The brush is a brushed chain integrated with the chain, and includes a drive gear and a driven gear for expanding and rotating the brushed chain, and the drive means for rotating the drive gear, the drive means 6. A cleaning device according to any one of the preceding claims, characterized in that the brush itself rotates with the chain.   9. The cleaning device according to claim 8, wherein the driven gear is disposed so as to be movable and fixed in the longitudinal direction of the brushed chain.   The cleaning device according to any one of claims 1 to 9, wherein the brush is formed of polyetheretherketone or stainless steel.   An in-furnace operation device comprising the cleaning device according to any one of claims 1 to 10 in front of a driving direction.

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