JPH0722890B2 - Base material surface cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial field of application" The present invention relates to a blasting device for a surface of a base material. More specifically, for example, steel structures such as bridges are generally painted to protect the steel material that is the base material.If this coating film is damaged or aged, remove this old coating film and clean the base. And paint again. The process of stripping off this old paint film and cleaning the base is called polishing.

This blasting process has been conventionally performed in the open air, and the adhered substances such as the peeled coating film become dust and scatter into the atmosphere, causing pollution. Recently, it is necessary to prevent this scattering. .

However, when sweeping a flat plate from above, it is easy because it is in a downward position, but it is unavoidable to take a horizontal position or an upward position like a bridge girder, and it has an end like a rib plate. There was no effective means for members with many narrow widths.

The present invention relates to a blasting / cleaning device which solves this problem and is capable of easily taking a lateral posture and an upward posture and capable of sufficiently blasting a member such as a rib plate of a bridge girder.

“Prior Art” Conventionally, as shown in FIG. 6, in this type of blasting and cleaning apparatus, a wire brush (2) is planted on the circumference of a cup-shaped housing (1) and attached to a hand motor, It is applied to the ground surface of the base material and rotated at high speed to scrape the coating film and fly the scraped dust outward by centrifugal force.

Moreover, the one shown in FIG. 7 is the projection port (4) of the casing (3).
From the base material (5) to the scouring surface (6), shot material such as sand, steel balls, sinter, etc.
It is a method of spraying (7), scraping the coating film (8) and flying with impact force to suck the peeled material (10) and the projection material (7) from the suction port (9), which is so-called blasting method. .

"Problems to be solved by the invention" The method of scraping the coating film with the wire brush (2) shown in Fig. 6 and blowing it off by centrifugal force is efficient, but the rotation of the brush also causes the air flow in the centrifugal direction. However, there is a problem that the adhered substances such as the peeled coating film become dust and are scattered in the atmosphere.

Although the blasting method shown in Fig. 7 is convenient for performing a certain area in the downward position, the bottom surface of the device opens in a small area, and the projectile does not go to the suction port in the horizontal position or the upward position. There was a problem that it could not be used for on-site work such as bridge girders because of spillage.

"Means for Solving Problems" The present invention has been made to solve the above problems, and has a suction pipe (11) having a suction side opening end (12) at one end.
A wire brush (14) provided so as to face the suction side opening end (12), a vibrating device (17) for vibrating the wire brush (14) in the longitudinal direction, and the suction pipe (11). ) Of the wire brush (14)
Is provided by bundling the other end of the wire (18) with a holder (15),
The suction direction of the suction side opening end (12) and the flocking direction of the wire (18) are the same direction, the tip of the wire (18) faces the suction side opening end (12), and the holder (15) Is installed outside the suction pipe (11), and the wire of the wire brush (14) is attached.
The base material surface cleaning and cleaning device is characterized in that it is provided so that the degree of protrusion from the suction side opening end (12) can be adjusted when the tip of (18) is worn.

"Operation" When the tip of the wire brush slightly protruding from the suction pipe is vibrated violently while being applied to the surface of the base material to be cleaned and swept at a substantially right angle, the tip of the wire brush moves like a hammer on the surface of the base material The coating film of (1) is tapped to split the coating film into powder. The separated dust is carried on the air sucked by the dust collector, sucked inward from the suction side opening end, and collected by the dust collector. Therefore, it does not scatter outward.

[Embodiment] The basic principle of the present invention is, as shown in FIGS. 1 to 3, when air is sucked by a dust collector provided at the other end of the suction pipe (11), the air is a base material to be ground and swept. (5) and the suction side opening end (12) of the suction pipe (11) from the gap (13) through the inside of the suction pipe (11),
After passing through between the wire brushes (14) and further through the suction port and the flexible hose, dust is collected by the filter of the dust collector, and only air is released to the outside air. Therefore, the flow of this air is almost constant, as long as the wire brush (14) does not move across this flow, the air will not flow back from the suction pipe (11) to the outside air, and all the dust will go to the suction port. The point is that it can completely prevent scattering. At this time,
The wire brush (14) is bundled and fixed by a holder (15), and the entire body makes a violent vertical movement (vibration or tapping movement) at a substantially right angle to the polishing surface (6) of the base material (5). The tip of each wire hits the coating like a hammer and splits the coating into powder. Thus, the straight-ahead wire brush (14) of the device according to the present invention only strikes off the coating film (8), and since its movement is the same as the flow of air, it does not disturb the flow of air and dusts off. I get on the air from the edge and head towards the sucker. In addition, this straight-ahead wire brush has the advantage that air easily passes through the wire brush and the polishing ability does not change even if the tip of the wire is worn. Furthermore, as shown in FIG.
The coating film (8) left on the cleaning surface (6) of (5) protrudes only there, but it is easy to avoid each wire (18) and the wire brush (1
4) When viewed from the whole, it hits strongly in the part left unremoved and weakly in the part exhausted, so there is no need to worry about scraping the polishing surface (6). This is also a feature that conventional rotating wire brushes do not have.

Next, a concrete first embodiment of the present invention will be described with reference to FIG. (11) is a suction pipe, and the suction side opening end of this suction pipe (11)
It is bent from (12) to the suction port (16) and is further connected to the filter of the dust collector via a flexible hose (not shown). Further, (14) is a wire brush, and this wire brush (14) is fixed to a holder (15), and this holder (15) is provided so as to interlock with a vibrating device (17). Each wire (18) of (14) is inserted into a small hole (20) penetrating the bent portion (19) of the suction pipe (11) so as to be able to move back and forth. A support frame (21) integrated with the suction pipe (11) and the vibrating device (1
The attachment part (22) of 7) is provided so that the vibration generator (17) can be fed in according to the wear of the wire brush (14).

The wire brush (14) has a circular shape as shown in FIG. 2 depending on the type of coating film, thickness, base material shape, etc.
(18) arranged, wire (18) arranged on the whole surface without hollowing, outer side arranged in a rectangle, wire (18)
The end portions of are not the same surface, but are circular. The material of the wire (18) is appropriately selected such as a piano wire when a hard wire is needed and a soft steel wire or a copper alloy wire when a soft wire is needed. Also, the wire diameter is 0.1
Approximately 4 mm, the arrangement pitch can be appropriately selected.

As the vibration generator (17), an electromagnetic vibration device such as a general vibrator, a hydraulic vibration device such as a fatigue tester, a general vibration motor, a pneumatic hammer such as a rock drill, etc. can be used.

In the above-mentioned structure, the wire brush (14) is applied to the surface of the coating film (8) of the base material (5) at a substantially right angle to drive the vibrating device (17). Then, the wire brush (14) vibrates violently in the length direction and makes a small slap motion on the coating film (8) to smash the coating film (8). The dust collector inside the suction pipe (11) is designed so that the wire brush (14) passes through the suction pipe (11) from the gap (13) between the base material (5) and the suction pipe (11).
Air is drawn through the space. Therefore, the broken coating film (8) is collected by the internal filter, and only air is discharged to the outside. The suction pipe (11) has a wire brush (14).
There are a large number of small holes (20) penetrating therethrough, and some air also enters from these small holes (20), but there is no problem in practical use.

FIG. 5 shows another embodiment of the present invention, in which a suction pipe is used.
A holder (1) equipped with a wire brush (14) around the tip of (11).
5) is fitted so that it can move back and forth, and serves as a guide for the wire brush (14). Further, a vibrating device (17) is attached to the outer circumference of the suction pipe (11) and is connected to the holder (15) by a holder chuck (23). The casing (24) in this example is provided so as to cover the outer periphery of the wire brush (14), and the casing (24) is structured such that it naturally falls off due to wear of the wire brush (14) or is peeled off by part by hand. It is structured.
Furthermore, if the whole device is held by a support handle (25) integrally provided to the side of the vibration device (17) and is pressed against the surface (6) of the base material (5) with suction force, the wire brush ( It can be fed in according to 14) wear. In addition, in FIG. 5, the suction pipe
A flexible hose (27) is connected to the other end of (11) via a hose coupling (26), and this is further connected to a dust collector.

"Effects of the invention" (1) By a small tapping motion of the wire brush (14), the polishing surface
Even if the (6) has irregularities or has various shapes, only the coating film (8) weaker than the base material (5) can be reliably beaten off.

(2) The small striking motion of the wire brush (14) is the same as the flow of the sucked air and is performed in the dust collection space, so dust is blown from the blown air without disturbing the air flow. It is sucked up by the car and never scattered outside.

(3) Since the wire brush (14) is sucked in the same direction as the vibration direction, the suction resistance of air by the wire brush (14) is extremely small.

(4) Even if the tip of the wire brush (14) is worn, the degree of protrusion of this tip can be adjusted, so that good polishing and cleaning ability continues for a long time.

(5) Even if there is a coating film (8) left on the cleaning surface (6), the wire brush (14) strongly hits only the protruding part, so there is no fear of excessively scraping the cleaning surface (6). Absent.

(6) The cleaning surface (6) can be easily cleaned in any direction such as upward, sideways, or downward.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a principle view of a base material surface blasting / cleaning apparatus according to the present invention, FIG. 2 is an end view, FIG. 3 is an enlarged view of a wire brush, and FIG. 4 is a specific view of the present invention. FIG. 5 is a sectional view of another embodiment of the present invention, FIG. 6 is a perspective view of a conventional wire brush, and FIG. 7 is an explanatory view of a conventional blasting method. is there. (1)… Cup type housing, (2)… Wire brush, (3)…
Casing, (4) ... Projection port, (5) ... Base material, (6) ... Abrasive surface,
(7) ... Projectile material, (8) ... Coating film, (9) ... Suction port, (10) ... Peeling material, (11) ... Suction tube, (12) ... Suction side opening end, (13) ... Gap,
(14) ... Wire brush, (15) ... Holder, (16) ... Suction port,
(17) ... Vibration device, (18) ... Wire, (19) ... Bend, (21) ...
Small hole, (21) ... Support frame, (22) ... Attachment part, (23) ... Holder chuck, (24) ... Casing, (25) ... Support handle, (26) ...
Hose coupling, (27) ... Flexible hose.

Claims (3)

[Claims] 1. A suction pipe (1) having a suction side opening end (12) at one end.
1), a wire brush (14) provided to face the suction side opening end (12), a vibrating device (17) for vibrating the wire brush (14) in the longitudinal direction, and the suction pipe. (11) a dust collector coupled to the other end opening side, the wire brush (1
4), the other end of the wire (18) is provided by bundling with a holder (15), the suction direction of the suction side opening end (12) and the flocking direction of the wire (18) are the same direction, the suction side The tip of the wire (18) faces the open end (12), and the holder (15) is attached to the suction pipe (1
1) is mounted outside, and when the tip of the wire (18) of the wire brush (14) is worn, the protrusion degree from the suction side opening end (12) is adjustable. Base material surface cleaning device. 2. The suction pipe (11) is bent from the suction side open end (12) to the suction port (16), and a large number of small holes are formed in the bent portion (19).
(20) is bored, the wire brush (14) is inserted into the small hole (20) from the outside, and the support frame (21) integrated with the suction pipe (11) and the vibration generator (17) are attached. The part (22) means the wire brush (1
The blasting and cleaning device for the surface of a base material according to claim 1, wherein the vibration oscillating device (17) is fed in according to the wear of (4). 3. A wire brush (14) is guided so as to be able to move forward and backward to the outer periphery of the suction side opening end (12) of the suction pipe (11), and the vibrating device (17) is arranged on the outer periphery of the suction pipe (11). The base material surface polishing according to claim 1, wherein the casing (24) on the outer periphery of the wire brush (14) is detached or peeled off according to wear of the tip of the wire brush (14). Sweeper.