JPS5942156B2 - Method and device for peeling off and removing waterproof coatings on buildings, etc. - Google Patents

Description

[Detailed Description of the Invention] This invention applies to waterproof coatings made of asphalt, urethane-based or epoxy-based synthetic resins that are applied to the roofs of buildings, especially concrete buildings, and which are peeled off for re-covering. The present invention relates to a method for removing and a device used therefor.

When the above-mentioned waterproof coating layer is damaged due to aging over time, it requires replacement work.

In this case, the old waterproof coating must of course be completely peeled off and removed.

That this is incomplete. It is difficult to apply a new waterproof coating completely without any defects.

Conventionally, such peeling of the waterproof coating was carried out entirely manually by a laborer using a shovel or a spade-like tool.

Naturally, such work is extremely difficult and requires a great deal of time and effort, and this cost accounts for an extremely large portion of the cost of replacing the waterproof coating layer.

Not only that, but it takes a lot of time, so if it rains during the process, it may have a negative effect on the inside of the building, so there are restrictions such as having to choose a period with stable weather to carry out the construction. there were.

This invention aims to provide a unique method that can efficiently peel off and remove the waterproof coating layer as described above, in a short period of time, and achieve great labor savings, as well as a dedicated device for use in the method. .

Embodiments of the present invention will be described below based on the drawings.

Implementation of this invention is carried out in two steps.

The first step is performed using a peeling and removing apparatus as shown in FIGS. 1 to 4.

This device has a flat cutting plate 1 shaped like a plasterer's trowel with a blade 2 on the front periphery, which bulges upward toward the rear, and the top edge has a cutting blade 3. A plow member A is provided with a bulge 4 for incision, a bundle rod 5 rises upward from the rear end of the plow member A, and a bundle rod 5 projects obliquely downward from the lower part of the bundle rod 5 toward the front. The tow line connecting arm 6 is provided.

The upper end of the bundle rod 5 is bifurcated for ease of operation, and can be operated by holding the branched portions 5a and 5b with both hands.

The reason why the tow rope connecting arm 6 is tilted downward is because the tow rope connecting arm 6 is tilted downward.
This is so that the plow member A can easily dig into the underside of the waterproof layer S when towing the waterproof layer S, and the degree of inclination may be configured to be variable and adjustable.

Therefore, the first step is carried out by installing a mechanical power traction device W such as a winch at an arbitrary end of the roof surface of the building where the waterproof coating layer S is applied, as shown in Fig. 1. This is then connected to the distal end of the connecting arm 6 via a traction cable 8.

In this state, the worker M holds the bundle rod 5 and pulls the traction device W.
Activate the plow member A' and move it slowly.

At this time, one worker M tilts the handle bar 5 slightly forward so that the blade part 2 of the plow member A will bite into the underside of the waterproof coating layer S, and then holds the flat cutting plate 1. Operate as if cutting into the underside of the waterproof coating layer S.

Accordingly, as the plow member A advances, the waterproof coating layer S is cut by the flat cutting plate 1 between it and the base surface G such as concrete, and is also peeled off by the incision bulge 4 and incised. It is cut open left and right by the blade part 3, and the broken pieces are distributed to the left and right sides of the plow member.

In this way, by one advance of the plow member A, the waterproof coating layer S
Since a predetermined width is peeled off in a straight line, this operation is repeated successively on adjacent parts in multiple parallel rows to complete the first step.

At this time, the traction member W is of course sequentially moved to the side as necessary.

At the end of the first step, most of the waterproof coating layer S is peeled off from the base surface G, and its fragments remain in the form of ridges, but some of the waterproof coating layer S still remains on the base surface G. Since it remains attached to the G, even if the above-mentioned crushed pieces are removed, it is not possible to completely expose the underlying surface.

Therefore, the following second step is performed for finishing.

This second step is shown in FIGS. 5 to 1, and is a finishing cutting process in which a plurality of cutting band blades 10 are fixed horizontally at predetermined intervals on the lower surface of a frame 9 formed into a rectangular shape using angle materials, etc. This is carried out using the apparatus B'Y.

The cutting band blade 10 described above has a substantially V-shape that expands toward the rear in the traveling direction when viewed from above, and the lower part thereof is inclined forward as shown in FIG.

This finishing cutting device B is used as a so-called planner.

Therefore, in the second step, the traction device W arranged in the same manner as described above is used.
The frame body 9 is connected to the frame body 9 via the towing cable 11, and if necessary, a person or a heavy machine P is placed on the frame body 9 and a load is applied thereto, and the traction device W is started, and the cutting device B 'I will push forward slowly.

Then, as shown in FIG. 7, the waterproof coating layer S that may still remain on the base surface G is scraped away by the cutting band blade 10, and the flat base surface G is exposed.

Therefore, by repeating this operation on adjacent parts in sequence, complete peeling of the waterproof coating layer S from the base surface G is achieved.

Finally, the peeled pieces of the waterproof coating layer S are swept up using an appropriate tool, and the base surface G is completely exposed, and a new waterproof coating layer can be painted or laid with a sheet. It is something that can be done.

Since this invention is based on the above-mentioned method and device, compared to the conventional work that was performed entirely by human labor, the work of peeling and removing the waterproof coating layer can be performed with great labor savings and high efficiency. can be achieved.

By the way, conventionally, peeling work of 100rrL2 waterproof coating required a total labor force of 35 people/day, but according to the method of this invention, a labor force of 6 people/day is sufficient.
Very economical.

Not only that, but the finishing condition is also remarkable in practice, as it is possible to obtain a completely exposed flat surface on the base surface, and it is also possible to finish the construction of a new waterproof coating in good condition. It has advantages.

[Brief explanation of the drawing]

The drawings show embodiments of the invention, and FIG.
A sectional view showing an embodiment of the process, FIG. 2 is a perspective view of the cutting device used in the first step, FIG. 3 is a sectional view taken along line ■-■ in FIG. 1, and FIG. 4 is a line taken along IV-EV line in FIG. 5 is a cross-sectional view of the second
FIG. 6 is a bottom view of the finishing cutting device used in the second step, and FIG. 7 is an enlarged sectional view of the main parts thereof. A: Plow member, B: Finish cutting device,
S... Waterproof coating layer, W... Traction device, 1
・・・・・・Flat cutting plate, 2・・・・・・Blade sound countermeasure・
...Blade part for incision, 4...Bulge part for incision, 5
......Handle rod, 6...Tow cable connection arm, 8...Tow cable, 9...Frame body, 10
...... Cutting band blade, 11... Tow rope. 5

Claims (1)

[Scope of Claims] 1. A plow member A having, on the upper surface of a flat cutting plate 1 having a blade portion 2 on the front periphery, a cutting bulge 4 having a substantially triangular cross section that bulges upward toward the rear. After repeatedly carrying out the process of forcibly pulling this from the front in the direction of travel with mechanical power to cause the waterproof layer SY to peel off in a twill pattern in parallel multiple rows,
Next, a finishing cutting device is provided, in which one or more cutting band blades 10, which have a substantially V-shape that expands toward the rear in the traveling direction in plan view, are fixed horizontally to the lower surface of the frame 9 in a downwardly protruding manner. A building characterized in that the finishing cutting device B is forcibly pulled from the front in the direction of travel by mechanical power and the process of cutting off the waterproof layer S that may still be attached is repeated a required number of times using the finishing cutting device B. How to peel off and remove waterproof coatings such as 2. A plow member A equipped with a cutting bulge 4 having a triangular cross section that swells upward toward the rear on the upper surface of a flat cutting plate 1 having a blade 2 on the front periphery, and the plow member A. A building or the like comprising a handle bar 5 rising upward from the rear end and a tow cable connecting arm 6 projecting diagonally downward from the lower part of the handle bar 5. Waterproof coating layer peeling and removal equipment. 3 At the bottom of the frame 9, which allows the connection of a tow cable to the front end, there is a
A plurality of cutting band blades 10 are fixed horizontally in a downwardly protruding manner, and the cutting band blade 10 has a substantially V-shape expanded rearward in the traveling direction in plan view, and the lower part faces in the traveling direction. A device for peeling and removing waterproof coatings on buildings that are tilted forward.