JP3526359B2 - Chimney cleaning device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chimney cleaning device.

[0002]

2. Description of the Related Art Conventionally, for cleaning the inside of a chimney, a gondola or the like is lowered from the top opening of the chimney into the chimney and a worker on the gondola is manually operated, or a winch or the like is used from the top opening of the chimney Then, a machine with a cleaning mechanism inside the chimney was moved down (Japanese Utility Model Publication No. 4-25938, etc.).

[0003]

However, when cleaning is performed by a worker, the work is performed in a dust environment and a closed dark place environment. In addition, since the worker (human) rides on the gondola, the size of the gondola becomes large, and it was necessary to install a large winch at the top of the chimney. In addition, it was not possible to deal with small-diameter chimneys.

On the other hand, when a machine is used for cleaning, the conventional machine has a large mechanism for cleaning the entire inner peripheral surface of the chimney, so that the machine has a small diameter manhole formed at the base end of the chimney. It was not possible to carry it into the chimney from the ground and had to carry the machine to the top of the chimney and into the chimney through its top opening.

[0005]

SUMMARY OF THE INVENTION A chimney cleaning device according to the present invention, which has been devised in view of the above circumstances, has a wire hanging from the top of the chimney and a main body that moves up and down along the wire. And a plurality of legs that can be freely opened and closed
The arm is provided between each arm and each arm
Opening and closing leg mechanism that symmetrically opens and closes around each arm, and opens each arm
Urging means for urging each arm in the vertical direction
The support frame that is rotatably attached to the
Attached to the drive wheel and placed near the drive wheel
And a rotating brush, the drive wheel, the biasing means
Therefore, press it against the inner wall of the chimney via the arm and the support frame.
Drive force is transmitted in the circumferential direction of the inner wall of the chimney when
There is .

The inner wall of the chimney is cleaned as follows. First, the body is engaged with the wire hung in the chimney. Then, each arm is opened by the open / close leg mechanism, and
Each step urges each arm toward the open leg,
And the rotating brush against the inner wall of the chimney. Where the arm
By adjusting the spread leg angle, it is possible to handle chimneys with various inner diameters. Also, the arms are closed symmetrically around the body.
The leg makes the entire device compact along the axial direction, so it can be carried into the chimney from the manhole formed at the base end of the chimney with a diameter smaller than the chimney diameter. There is no need to transport the device to.

In this way, after the driving wheel and the rotating brush are pressed against the inner wall of the chimney by the biasing means, the driving wheel is driven. Then, the pressed drive wheel exerts sufficient traction to roll the inner wall of the chimney in the circumferential direction, and the rotating brush cleans the inner wall of the chimney in the circumferential direction. Further, when the main body is moved up and down along the wire, the rotating brush cleans the inner wall of the chimney along the axial direction. As a result, the entire inner wall of the chimney is cleaned.

Here, the arm is opened by the urging means.
Since it is biased in the opposite direction, it can absorb even a slight step on the inner wall of the chimney. Further, since a mechanism (self-climbing mechanism) for moving the main body up and down along the wire is incorporated in the main body, it is not necessary to install a hoisting equipment such as a winch outside the chimney as in the conventional case.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIG. 10, a plurality of chimneys 1 are housed inside an outer cylinder 70. The height of these chimneys 1 is several hundred meters (about 200 meters), and their inner walls are cleaned as follows.

As shown in FIG. 1, the top opening 2 of the chimney 1 is shown.
The lid member 3 for preventing the scattering of dust is installed in the. The lid member 3 is normally housed in a housing portion (not shown) provided on the top surface 4 of the outer cylinder 70. On the back surface of the lid member 3, a wire 6 for suspending the chimney cleaning device 5 is attached.
It is attached via. The tip 6a of the wire 6 is guided to the outside from the manhole 9 opened at the base of the chimney, and the weight 8 is attached to the manhole floor 10 to fix it. The wire 6 is usually wound around a drum 11 provided on the outer cylinder top surface 4. The weight 8 may be attached to the wire tip 6a from the beginning.

The wire 6 is attached to the main body 1 of the chimney cleaning device 5.
2 is hung. The main body 12 is composed of an up-and-down moving part 12a that holds the wire 6 and moves up and down along the wire 6, and a cleaning swivel part 12b that is hung from the up-and-down moving part 12a via a connecting cable 13. A so-called endless winch 14 is housed in the up-and-down moving portion 12a. The endless winch 14 is configured such that the wire 6 is wound around the drum several times from above and hangs downward, and the drum is rotated in the forward and reverse directions by a motor (not shown) to move up and down the vertically moving portion 12a along the wire 6. Then, the self-climbing mechanism for stopping the drum to stop the vertical moving portion 12a at an arbitrary position of the wire 6 is provided.

The cleaning swivel unit 12b has a pair of arms 15.
A and 15b are provided so that they can be freely opened and closed. Arm 15
As shown in FIGS. 2 and 3, a and 15b are supported by a rotary shaft 16 pivotally supported by the cleaning swivel unit 12b, and are opened and closed by an open / close leg mechanism 17 shown in FIGS. 4 to 6. The open / close leg mechanism 17 will be described with reference to FIG. As shown in the figure, a gear 18, a stepped pulley 19a and an auxiliary arm 20a are fixed to one end of a rotary shaft 16 pivotally supported by the cleaning swivel unit 12b, and an arm 15a is rotatably attached. A stepped pulley 19b, an auxiliary arm 20b, and an arm 15b are rotatably attached to the other end side. Stepped pulley 19b and auxiliary arm 20b on the other end side
Is integrally formed, and is integrally formed with the rotary shaft 16
Rotate around. In addition, the auxiliary arms 20a and 20b are
As shown in FIG. 5, it is formed shorter than the arms 15a and 15b.

The stepped pulley 19a is a stepped pulley 23 of the drive shaft 22 of the motor 21 provided on the cleaning swivel portion 12b.
It is wrapped around with a stepped belt 24. Motor 21
A brake 25 is provided in the. An auxiliary rotary shaft 26 is axially supported by the cleaning swivel unit 12b in parallel with the rotary shaft 16. A gear 27 is fixed to one end of the auxiliary rotary shaft 26. The gear 27 meshes with a gear 18 provided on one end side of the rotary shaft 16. A stepped pulley 28 is fixed to the other end of the auxiliary rotary shaft 26. The stepped pulley 28 is wound around a stepped pulley 19 b provided on the other end side of the rotary shaft 16 with a stepped belt 29.
According to this configuration, when the motor 21 is rotated, the auxiliary arm 20a on the one end side of the rotating shaft 16 and the auxiliary arm 20b on the other end side rotate in mutually opposite directions. The step pulleys 19a, 19b, 23, 28 and the step belts 24, 29 may be sprockets and chains.

Each auxiliary arm 20a, 20b and arm 15
A torsion coil spring 30 is provided between a and 15b.
a and 30b are interposed. Torsion coil spring 30a
As shown in FIG. 5, the linear portions 31a and 32a are provided at both ends thereof.
Has one end 31a attached to the auxiliary arm 20a and the other end 32a attached to the arm 15a. The same applies to the torsion coil spring 30b. A tension spring may be used instead of the torsion coil springs 30a and 30b.

According to this structure, the auxiliary arm 2 on the one end side is provided.
0a and the auxiliary arm 20b on the other end side rotate in opposite directions, as shown in FIG. 6, the torsion coil springs 30a, 3
0b, the arms 15a and 15b are pivoted to open the legs,
Drive wheels 33 and rotating brushes 34 provided at the tips of the arms 15a and 15b are pressed against the chimney inner wall 1a by the torsion coil springs 30a and 30b as shown in FIG. That is, in the present embodiment, the torsion coil springs 30a and 30b correspond to the biasing means in the claims. Each auxiliary arm 20a, 20b pivot angle of,
The rotation angle of each of the auxiliary arms 20a and 20b is controlled or controlled by a not-shown stopper or a rotary encoder incorporated in the motor 24, and the brake 25 is used to hold the rotation angle. Also, drive wheels 33 and rotation
The brush 34 is attached to the main body 12 via the arms 15a and 15b.
Is installed in the vicinity of the chimney inner wall 1a.
It

As shown in FIGS. 2 and 3, the drive wheel 33 is rotatably attached to a support frame 36 supported by pins 35 at the tips of the arms 15a and 15b. That is, the rotary shaft 37 fixed to the drive wheel 33.
Is rotatably supported by the support frame 36. Rotating shaft 3
A stepped pulley 38 is attached to the stepped pulley 7.
A rotary shaft 40 of a motor 39 attached to the support frame 36
A stepped belt 42 is wound around the stepped pulley 41. According to this configuration, by driving the motor 39 as shown in FIG. 2, the drive wheels 33 pressed against the inner wall 1a of the chimney by the torsion coil springs 30a and 30b roll in the inner wall 1a of the chimney in the circumferential direction, and Along with this, the main body (vertical movement part 12a, connecting cord 13 and cleaning swivel part 12b) suspended by the wire 6 swivels. The twist of the wire 6 generated at this time is released by the untwisting mechanism 7 above the wire 6 shown in FIG.

As shown in FIG. 8, the drive wheel 33 uses an omnidirectional wheel 43 that transmits a drive force in the circumferential direction of the inner wall 1a of the chimney and is rotatable in the axial direction. Omnidirectional wheel 4
The reference numeral 3 designates a unit 46 composed of a base portion 44 fixed to the rotating shaft 37 and a roller portion 45 rotatably attached to the base portion 44 at intervals of 120 degrees, and two units 46 are arranged in the axial direction. The base portions 44, 44 of the units 46, 46 are offset by 120 degrees. This is because the roller portion 45 of either unit 46, 46 is grounded to the inner wall 1a of the chimney.

According to the omnidirectional wheel 43, when the rotating shaft 37 is rotated by the motor 39 shown in FIG. 3, the barrel-shaped roller portion 45 attached to the base portion 44 does not rotate on its own and the rotating shaft 37 rotates. It is driven to rotate in the circumferential direction of 37,
It runs in the circumferential direction on the inner wall 1a of the chimney. When the main body 12 is raised by the endless winch 14 shown in FIG. 1 (moved in the axial direction of the rotary shaft 37), the inner wall 1a of the chimney stack 1a
The roller portion 45 pressed against the support shaft 45a
It freely rotates (rotates) around, and the chimney inner wall 1a is driven to rotate in the axial direction. The surface of the roller portion 45 is provided with urethane or the like for preventing slippage.

Two omnidirectional wheels 43 are provided on the rotating shaft 37 at a predetermined interval, and a total of four omnidirectional wheels 43 are provided on both arms. This is a chimney inner wall 1 as shown in FIG.
This is to ensure three-point support by the remaining three wheels even if the one wheel is lifted up due to the uneven portion 47 in a.

As shown in FIG. 9, the rotary shaft 4 of the rotary brush 34 is attached to the support frame 36 of the drive wheel 33 (omnidirectional wheel 43).
A support frame 49 that axially supports 8 is attached via a connecting bracket 50 (see FIG. 2). Specifically, the rotating brush 34 is arranged in front of the driving wheels 33 in the traveling direction. The surface cleaned by the rotating brush 34 is the drive wheel 3
This is because 3 runs. However, the layout is not limited to this, and may be the reverse layout or another layout.

A stepped pulley 51 is attached to the rotary shaft 48 of the rotating brush 34, and the stepped pulley 51 is attached to the support frame 4.
A stepped belt 53 is wound around a stepped pulley 52 of the rotary shaft of the motor attached to the motor 9. According to this configuration, the rotating brush 34 rotates by driving the motor. The rotation direction of the rotary brush 34 is preferably opposite to the rotation direction of the drive wheels 33. This is because the relative speed of the rotating brush 34 with respect to the inner wall 1a of the chimney is increased to improve the cleaning efficiency.

As shown in FIG. 7, the rotating brush 34
The support frame 49 and the connection bracket 50 are integrated, the connection bracket 50 is rotatably attached to the support frame 36 of the drive wheel 33 via the pin 54, and is attached between the support frame 36 and the connection bracket 50. Torsion coil spring 5
Alternatively, the rotating brush 34 may be pressed against the inner wall 1a of the chimney by the step 5. In this way, the rotating brush 34 is moved to the inner wall of the stack 1 by the biasing force of the torsion coil spring 55 shown in FIG.
It is pressed against a and cleaning efficiency is further improved.

As shown in FIG. 1, the chimney inner wall 1 is attached to the support frame 36 of the drive wheel 33 or the support frame 49 of the rotating brush 34.
A TV camera 56 and a light for monitoring a are attached. The TV camera 56 monitors the cleaning state of the chimney inner wall 1a by the rotating brush 34, the damage to the chimney inner wall 1a, and the like.

A power supply cable 57 is lowered on the cleaning swivel unit 12b. The power supply cable 57 is connected to each of the motors and the TV camera 56, and the tip side of the power supply cable 57 is pulled out from the manhole 9 opened at the base end of the chimney 1 to the electric cable drum 58 provided on the manhole floor 10. It is wrapped around and connected to the monitor 60 via the controller 59. The image of the TV camera 56 is displayed on the monitor 60. The controller 59 includes a cleaning device 5
A switch panel 61 is connected to control the up-and-down turning and the like. The operator 62 operates this switch panel 61 on the manhole floor 10.

A suction hose 64 of the dust collector 63 is inserted into the manhole 9 as shown in FIG. Dust collector 6
The numeral 3 is arranged on the ground level 65 below the manhole floor 10 and sucks and removes dust scattered and falling during cleaning of the chimney inner wall 1a. The deposit 66 (dust, etc.) deposited on the bottom of the chimney 1 is taken out by opening an outlet (not shown).

The operation of this embodiment will be described.

The inner wall 1a of the chimney is cleaned as follows. First, as shown in FIG. 1, the wire 6 is attached to the lid member 3 covering the top opening 2 of the chimney 1 via the untwisting mechanism 7, the wire tip 6a is hung downward, and the chimney is opened at the base end. Take out from the manhole 9.

Then, the taken-out wire 6 is inserted into the wire insertion opening of the endless winch 14 provided in the vertically moving portion 12a of the cleaning device 5. Wire tip 6a discharged from the wire discharge port of the endless winch 14
A weight 8 is attached to the, and this is installed and fixed to the manhole floor 10. A weight 8 may be attached to the wire tip 6a from the beginning, and the weight 8 may be hung from the top opening 2 of the chimney 1.

Then, with the arms 15a and 15b attached to the cleaning swivel portion 12b of the cleaning device 5 closed, the arms 15a and 15b are carried into the chimney 1 from the manhole 9. By closing the arms 15a and 15b, the overall size of the device 5 becomes compact along the axial direction. Therefore, the chimney 1 is formed from the manhole 9 formed at the base end of the chimney 1 to have a smaller diameter than the chimney diameter. You can carry it inside. Therefore, it is not necessary to transport the device 5 to the top of the chimney 1 as in the conventional case,
The labor and cost for that can be reduced significantly.

Then, the pair of arms 15a and 15b attached to the cleaning swivel portion 12b are opened in the chimney 1, and the drive wheels 33 and the rotating brush 34 provided at the tips thereof are attached to the torsion coil spring shown in FIG. It is elastically pressed against the chimney inner wall 1a by 30a and 30b. This operation is performed by the operator 62 on the manhole floor 10 operating the switch panel 61. At this time, the arms 15a, 15
The chimney 1 with various inner diameters can be dealt with by adjusting the opening / closing leg angle of b.

After the drive wheel 33 and the rotary brush 34 are pressed against the inner wall 1a of the chimney in this way, the worker 62 drives the drive wheel 33 and rotates the rotary brush 34. Then, the torsion coil springs 30a, 3
The drive wheel 33 pressed by 0b exerts sufficient traction to roll the inner wall 1a of the chimney in the circumferential direction, and the rotating brush 34 cleans the inner wall 1a of the chimney in the circumferential direction.
Further, when the endless winch 14 provided on the vertically moving portion 12a is operated to raise the main body 12 along the wire 6, the rotating brush 34 cleans the inner wall 1a of the chimney along the axial direction. As a result, the entire surface of the chimney inner wall 1a is cleaned. For example, by rotating the drive wheels 33 while raising the main body 12, the inner wall 1 a of the chimney is spirally cleaned by the rotating brush 34.

Here, since the arms 15a and 15b are elastically biased in the leg opening direction by the torsion coil springs 30a and 30b, even if the inner wall 1a of the chimney has some steps or expansion / contraction of diameter, it can be absorbed. Further, an endless winch 14 (self-climbing mechanism) for moving the main body 12 up and down along the wire 6 in the vertical moving portion 12a of the main body 12.
Since the above is incorporated, the hoisting equipment such as a winch, which is conventionally installed outside the chimney 1, is not required, and the cost can be significantly reduced. That is, according to the present embodiment, a large winch for pulling up the apparatus, which has conventionally been required to be installed on the top surface 4 of the chimney, is not required, which leads to a significant cost reduction.

In addition, the state of this cleaning is such that the arms 15a,
It is monitored by the TV camera 56 and the light provided on the support frame at the tip of 15b, and the image thereof is displayed on the monitor 60 of the manhole floor 10. After cleaning the inner wall 1a of the chimney from the base end portion to the top portion in this way, the endless winch 14 of the vertical moving portion 12a is reversely rotated to lower the device, and the device is taken out of the manhole to complete the cleaning.

[0035]

As described above, according to the cleaning device for a chimney according to the present invention, the following excellent effects can be exhibited.

(1) Since the size of the entire apparatus can be made compact by closing the arms, it can be carried into the chimney from the manhole formed at the base end of the chimney, which has a diameter smaller than the chimney diameter. It is not necessary to transport the device to the top of the chimney. Also, by adjusting the angle of the open / close leg of the arm, it is possible to deal with chimneys of various inner diameters.

(2) Since the main body incorporates a mechanism (self-climbing mechanism) for gripping the wire and moving the main body up and down along the wire, a winding device such as a winch is installed outside the chimney as in the conventional case. There is no need to do it.

(3) The inner wall of the chimney can be freely cleaned in the circumferential direction and the axial direction without an operator entering the chimney.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a chimney cleaning device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is an enlarged view of a main part of FIG.

FIG. 4 is an enlarged view of a main part of FIG.

5 is a view taken along the line VV of FIG.

FIG. 6 is a diagram showing an open leg state of an arm and an auxiliary arm.

FIG. 7 is a diagram showing a modification of the drive wheel and the rotating brush.

FIG. 8 is a perspective view showing an omnidirectional wheel as a drive wheel.

FIG. 9 is a perspective view showing a rotating brush.

FIG. 10 is a side sectional view of a chimney.

[Explanation of symbols]

1 chimney 1a Chimney inner wall 5 Chimney cleaning device 6 wires 12 body 15a arm 15b arm 30a Torsion coil spring as biasing means 30b Torsional coil spring as biasing means 33 drive wheels 34 rotating brush 43 omnidirectional wheels 56 cameras

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yuichi Miura, Inventor Yuichi Miura, 3-1-1-15 Toyosu, Koto-ku, Tokyo Ishikawajima-Harima Heavy Industries Co., Ltd. Toji Technical Center (72) Sanji Ito, Santan Botan, Koto-ku, Tokyo No. 14-15 Ishikawa Island Environmental Service Co., Ltd. (56) Reference JP-A-6-158875 (JP, A) JP-A-2-225292 (JP, A) JP-A-62-91302 (JP, A) Actually open 3-58386 (JP, U) Actually open 63-12035 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) F23J 3/02

Claims (6)

(57) [Claims] 1. A wire hung from the top of a chimney, a main body which moves up and down along the wire, and a main body which opens on the main body.
Between multiple arms that can be freely closed and between each arm
Opening that opens and closes each arm symmetrically around the above main body
Closing mechanism and urging means for urging each arm in the opening direction
And attach it to the tip of each arm so that it can rotate vertically.
And a drive wheel attached to the support frame,
And a rotating brush disposed near the drive wheel,
The drive wheel is provided with an arm and a support frame by the biasing means.
When pressed against the inner wall of the chimney via the
An in- smoke cleaning device, which transmits a driving force in a direction . 2. The rotating brush rotates the drive wheel.
The device according to claim 1, which is rotationally driven in a direction opposite to the direction.
Cleaner inside the stack. 3. A rotary member between the rotating brush and the arm.
Claim to provide a spring for pressing the brush against the inner wall of the chimney
Item 1. The chimney cleaning device according to item 1 or 2 . 4. The body is raised along a wire.
By driving the drive wheels,
Clean the inner wall of the chimney spirally from bottom to top with a brush
The cleaning device for the inside of the chimney according to claim 1, wherein 5. The in-chimney cleaning device according to claim 1, wherein the drive wheel is an omnidirectional wheel that transmits a driving force in the circumferential direction of the inner wall of the chimney and is rotatable in the axial direction. 6. The inside chimney cleaning device according to claim 1, wherein a camera for monitoring the inside wall of the chimney is provided at the tip of the arm.