JP2544182Y2 - Sealing equipment for mobile wall cleaning equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing device for a movable wall surface cleaning apparatus, and more particularly, to an abrasive particle projection device which is movable along a wall surface and projects abrasive particles toward the wall surface. A sealing device for hermetically sealing the gap between the abrasive grain projecting device and the wall surface; a suction unit for sucking a space defined by the abrasive grain projecting device, the sealing device and the wall surface; The present invention relates to an improvement in a sealing device of a movable wall surface cleaning apparatus that includes a collecting unit that suctions and collects abrasive particles projected from a projection device and moves along a wall surface while being adsorbed on the wall surface.

[0002]

2. Description of the Related Art Conventionally, as a movable wall surface cleaning equipment for performing polishing while moving on the outer wall surface of a ship, the outer wall surface of an oil storage tank, etc., it is made movable along the wall surface and projects abrasive grains toward the wall surface. Abrasive projecting device, a sealing device that hermetically seals the gap between the abrasive projecting device and the wall surface, and a suction device that sucks a space defined by the abrasive projecting device, the sealing device, and the wall surface. There is an apparatus provided with a means and a collecting means for sucking and collecting the abrasive particles projected from the abrasive particle projecting apparatus, and configured to move along the wall surface while being attracted to the wall surface.

[0003]

However, in the conventional wall-cleaning equipment configured as described above, a part of the projected abrasive particles is not collected but accumulates in a lower portion of the inside of the sealing device. When the cleaning equipment moves on the wall surface, when there is a projection on the wall surface, the sealing device must be largely curved and climb over the projection, and as a result, the movement resistance due to the bending deformation of the sealing device is reduced. There were problems such as becoming very large. The present invention has been made to solve the above-mentioned problem. The first invention is a sealing device in which the projected abrasive particles do not accumulate in the lower portion inside the sealing device, and the second invention is a wall cleaning device. An object of the present invention is to provide a sealing device in which the resistance of the sealing device does not increase when moving on a wall surface.

[0004]

In order to achieve the above object, a sealing device according to a first aspect of the present invention comprises: an abrasive projecting device which is movable along a wall surface and projects abrasive particles toward the wall surface;
A sealing device mounted on the abrasive particle projection device to hermetically seal the gap between the abrasive particle projection device and the wall surface; and a suction device for suctioning a space defined by the abrasive particle projection device, the sealing device, and the wall surface. Means, comprising a collecting means for sucking and collecting the abrasive grains projected from the abrasive grain projecting device, in a sealing device in a movable wall surface cleaning equipment moving along the wall surface while being adsorbed on the wall surface, the annular body, The lower cross-section has a U-shape in the horizontal direction, the bottom outer surface can contact the wall surface, and the lower half has a through hole communicating with the atmosphere inside the space. A seal main body having a characteristic; a seal main body provided at an inner lower portion of the seal main body along the through hole, and a tip end in a width direction extending inward; With a through hole communicating with the Characterized in that was provided with; a sealing member having FLEXIBLE. The second invention is characterized in that the seal body is formed in an annular body whose upper and lower central portions are tapered outwardly.

[0005]

In the first aspect of the present invention, the abrasive grains projected and dropped from the abrasive grain projection device are collected by the collecting means by an airflow formed by sucking outside air from the through holes of the seal body. Further, in the second invention, since the upper and lower central portions of the seal body are tapered, the seal body is partially curved when the seal body goes over the protrusion, and therefore the seal body is Movement resistance due to bending deformation

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1 which is a front view and FIG. 2 which is a partial cross-sectional side view, a mobile polishing apparatus is an abrasive grain projection device which is movable along a wall surface and projects abrasive grains toward the wall surface. a
A sealing device b attached to the abrasive particle projection device a and hermetically sealing the gap between the abrasive particle projection device a and the wall surface; and the abrasive particle projection device a, the sealing device b, and the wall surface. A suction means c for sucking the inside of the space S, and a collecting means d which communicates with the suction means c and sucks and collects the abrasive grains projected from the abrasive grain projecting device a. And
As shown in FIGS. 1 and 2, in the abrasive grain projection device a, a traveling vehicle 1 running on a wall F is provided with two sets of wheels 3, 3 rotated by an electric motor 2 with a reduction gear, and an endless roller chain. 4 and two sets of wheels 6, 6 which are rotated together with said wheels 3, 3 via chain gears 5, 5, are provided.
Rubber is stuck on the outer peripheral surface of
An abrasive grain projecting mechanism 7 for centrifugally projecting abrasive grains from the diagonally lower left position toward the wall surface F is mounted.
Is composed of an impeller 9 rotated by an electric motor 8, and a cover 10 with a guide that surrounds the impeller 9 and directs abrasive grains projected by the impeller 9 toward the wall surface F. An elongated projection port 11 is formed.

In the sealing device b, FIG.
3 and FIG. 4 which is an enlarged detailed view of a portion C in FIG. 2, which is a view taken in the direction of arrows BB, a projection port 11 of the abrasive grain projection mechanism 7 is provided on the back surface of the traveling vehicle 1. A space S including an opening 13 of the collection cylinder 12, an opening 19 of an air supply pipe 18 described later, and an outer position of an opening 20a of a suction pipe 20 described later is airtightly surrounded and substantially abuts on the wall F. A seal body 37 is mounted via a mounting member 38,
The seal body 37 has a circular annular body, a transverse U-shaped cross section, a bottom outer surface in contact with the wall surface F, and a through-hole penetrating through the mounting member 38 in substantially the lower half. A through hole 40 is provided to allow the space S to communicate with the outside air via the hole 39. The through hole 40 has flexibility and non-breathability. The seal member 41 is disposed along the seal body 37 via the support member 42 at a position along the seal member 41, and the seal member 41 is in space with the through hole 40 via the through hole 43 penetrated through the support member 42. It has a through hole 44 that communicates with S, extends so that the front end in the width direction faces inward, and has flexibility.

As shown in FIG. 2, the suction means c is provided at a position above the collection cylinder 12 in the traveling vehicle 1 for maintaining the degree of vacuum in the space S constant in the space S. An air supply pipe 18 for supplying air, and a suction pipe 2 for suctioning from a position below the projection port 11 of the abrasive grain projection mechanism 7
0, and the other end of the suction pipe 20 is connected to a dust collector (not shown) as a vacuum source. Further, a hood 30 is disposed immediately above a wire mesh 27 to be described later, and a vacuum breaker 31 that supplies air for maintaining the degree of vacuum in the space S to the supply pipe 18 to the hood 30 is provided.
The vacuum breaker 31 has a ventilation hole 32 communicating with the hood 30 and the supply pipe 18.
A box-shaped main body 33 communicating with the valve body, a valve 34 for opening and closing the ventilation hole 32, a compression coil spring 35 for pressing the valve 34 in the direction of the ventilation hole 32, and an adjusting member 36 for adjusting the repulsive force of the compression coil spring 35. It is configured.

In the collecting means d, the abrasive particles projected by the abrasive particle projecting mechanism 7 on the traveling vehicle 1 and colliding with the wall surface F and then rebounding and traveling forward. Is mounted in such a manner as to form a V-shaped sideways with the cover 10 of the abrasive grain projection mechanism 7, and the collecting cylinder 12 is provided with one end of the collecting cylinder 12.
An opening 13 is formed which extends horizontally and elongate with substantially the same length as the projection port 11 of the abrasive grain projection mechanism 7. 7
a, and a container 14 for temporarily storing the abrasive grains collected by the collection cylinder 12 is communicated. The mechanism 15 includes a damper 16 for communicating and closing the vicinity of a joint between the container 14 and the abrasive grain supply port 7a, and a cylinder 17 for rotating the damper 16 forward and reverse.
The cylinder 17 is pivotally supported on the outer surface of the cover 10 (see FIG. 1). As shown in FIG. 2, a hopper 25 for temporarily storing abrasive grains is mounted on the outer surface of the container 14.
The inside of the container 14 is communicated through a through hole 26 having a diameter of about 5 to 20 mm through which abrasive grains formed in the wall portion can pass. The upper end of the hopper 25 is provided with a lid 28 having an opening 27 a to which a wire mesh 27 having a mesh size not allowing passage of abrasive grains is provided. 21 a is connected through a transport hose 29. A compressed air generation source (not shown) is connected to the transport hose 29.

Next, the operation of the equipment having the above-described structure will be described. The magnitude of the repulsive force of the compression coil spring 35 of the vacuum breaker 31 is adjusted in advance, so that the space S defined by the traveling vehicle 1, the seal body 37, and the wall surface F is sucked and depressurized by the suction pipe 20, and the flow rate is reduced. Is sucked into the space S from the opening 19 of the air supply pipe 18 and the through-holes 39, 39 when the air is controlled to a required amount. F, the degree of vacuum in the space S is controlled to a required height, and the traveling vehicle 1 is attracted to the wall F by a force capable of running on the wall F by itself. After contracting the cylinder 17 of the damper mechanism 15 to close the damper 16, a required amount of abrasive grains is supplied to the container 14 and the hopper 25.

Further, by driving a dust collector (not shown),
The space S is sucked and depressurized by the suction pipe 20, and the air whose flow rate is controlled to a required amount by the vacuum breaker 31 is sucked from the air supply pipe 18 into the space S, and at the same time, the gap between the seal body 37 and the wall surface F is formed. And the through hole 39,
The air flowing through 40, 43, and 44 is also sucked into the space S, whereby the suction pipe 2 is opened from the opening 19 of the air supply pipe 18.
An airflow directed toward the opening 20a and an airflow directed from the through holes 44, 44 toward the opening 20a are generated. Further, by allowing air to flow through the gap between the seal body 37 and the wall surface F, frictional resistance between the seal body 37 and the wall surface F is reduced, and the wheels 3 and 6 are rotated by driving the electric motor 2. The traveling vehicle 1 is caused to travel on the wall F as needed.

Under such a condition, the electric motor 8 of the abrasive grain projecting mechanism 7 is driven to rotate the impeller 9, and then the cylinder 17 of the damper mechanism 15 is extended to operate the damper 1.
6, the abrasive grains in the container 14 are supplied to the impeller 9 through the abrasive grain supply port 7a. The supplied abrasive particles are projected obliquely downward from the impeller 9 toward the wall surface F, collide with the wall surface F, and then rebound and enter the collection cylinder 12, and the container 14.
Collected inside. On the other hand, the abrasive grains that fall as they are after colliding with the wall surface F, and the separated material that is separated from the wall surface F by the collision of the abrasive particles float, and in the middle thereof, pass through the space S through the opening 19 of the air supply pipe 18. It is sucked into the suction pipe 20 by riding on the airflow flowing through the opening 20a of the suction pipe 20 or the airflow flowing from the through holes 44, 44 toward the opening 20a. As a result, the peeled material hardly enters and accumulates in the container 14, and the abrasive grains hardly accumulate in the lower portion inside the seal body 37.

The exfoliated material and abrasive grains sucked into the suction tube 20 are sent to a separator (not shown) via the flexible hose 22 and are separated therefrom. The separated abrasive grains are pneumatically transported into the hopper 25 via the transport hose 29. The compressed air used at this time is discharged from the wire mesh 27, and is then sucked into the hood 30 together with the outside air, and subsequently into the space S from the air supply pipe 18. Although fine dust is also discharged from the wire mesh 27 together with the compressed air, the discharged fine dust is sucked into the hood 30 and does not go outside. on the other hand,
The exfoliated material and some abrasive grains are discharged from a separator (not shown), but fine dust is collected by a dust collector. By continuing the above operation, the wall surface F can be continuously cleaned. In the above embodiment, the seal body 37 is formed in a circular annular body. However, when two impellers 9 are provided to extend the seal body in the lateral direction, as shown in FIGS. The upper and lower central portions may be formed into annular bodies that protrude outwardly in a tapered shape. In this case, the seal bodies 37a and 37b may be protruded when they go over the protruding portions on the wall surface. In this case, since the part is partially bent by hitting a point, the force at the time of bending deformation may be small.

[0014]

[Effect of the invention] As is clear from the above description, the first
In the invention of the present invention, a through hole is provided in the lower half of the seal body to allow the inside of the seal body to communicate with the outside air. The abrasive grains inside are reliably and easily recovered by the airflow, so that there is almost no adverse effect that the abrasive grains accumulate in the lower portion of the seal body as in conventional equipment of this type. Also, the second idea is to use
The lower part is tapered so that the center part protrudes outward, so that the resistance when the seal body changes over the projection on the wall surface is extremely small compared to the conventional sealing device, such as excellent practical use It has an effective effect.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a view taken in the direction of arrows BB in FIG. 2;

FIG. 4 is an enlarged detailed view of a portion C in FIG. 2;

FIG. 5 is a view taken along the line BB of FIG. 2 in another embodiment of the present invention.

FIG. 6 is a view taken along line BB of FIG. 2 in another embodiment of the present invention.

[Explanation of symbols]

 37 37a 37b Seal body 39 40 44 Through hole 41 Seal member

 ──────────────────────────────────────────────────続 き Continuation of the front page Examiner Yukio Maeda (56) References JP-A-53-126765 (JP, A)

Claims (2)

(57) [Scope of request for utility model registration] An abrasive projecting device capable of moving along a wall surface and projecting abrasive grains toward the wall surface, and hermetically sealed between the abrasive projecting device and the wall surface mounted on the abrasive projecting device. Sealing device, suction means for suctioning the space defined by the abrasive grain projecting device, the sealing device and the wall surface, and collecting means for sucking and collecting the abrasive grains projected from the abrasive grain projecting device. A sealing device in a mobile wall-cleaning equipment that moves along the wall surface while being adsorbed on the wall surface, wherein the outer surface of the bottom is in contact with the wall surface in the form of an annular body and a transverse U-shaped cross section. A seal body 3 having a through hole 39, 40, 39, 40 for communicating the space with the outside air in a substantially lower half portion, and further having flexibility and non-breathability.
7, 37a, 37b; this seal body 37, 37a,
37b, the through holes 39, 40, 39, 4
0, and extends in such a manner that the front end in the width direction is directed inward, and the through-hole 4 is formed on the abrasive grain projection device side.
A sealing member (41) having through-holes (44), (44), and a flexible sealing member (41) communicating with each other. 2. The seal body 37, 37a, 37b.
2. The sealing device for a mobile wall-cleaning facility according to claim 1, wherein the annular member has a substantially upper and lower central portion projecting outward in a tapered shape.