JPS62200091A - Method of repairing hose and hose repair tool - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Technical Field of the Invention) The present invention relates to a method for repairing damaged parts such as pinholes that occur in a long flexible tubular body such as a fire hose, and a repair method used for the purpose. Regarding ingredients.

[Background of the invention]

When a fire hose is caught on a protrusion or the like during use, damage such as pinballs often occurs on the surface of the bow and the inner rubber lining. Conventionally, as a method for repairing a damaged portion that has occurred in a hose in this manner, a method has generally been used in which a repair patch is attached to the damaged portion from the outer wall surface of the hose to cover and repair the damaged portion.

However, hoses repaired using the conventional method described above are
The water leak prevention effect is not completely satisfactory; for example, when used at low water pressure, there is no problem, but when the water pressure becomes high, there is a problem that water inevitably leaks from the repaired part.

(Summary of the Invention) The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a method for repairing a hose that is relatively easy to repair and has an excellent water leak prevention effect, and a repair tool used for the same. With the goal.

The method for repairing a hose according to the present invention includes injecting adhesive from a damaged part of the outer wall of the hose, applying the adhesive around the damaged part of the inner wall of the hose, and applying a repair patch to the damaged part from the inner wall of the hose. The patch is characterized in that the repair patch is attached to the damaged area by placing it on the repair patch and pressing it against the damaged area.

Further, the hose repair tool according to the present invention is a hose repair tool for inserting into the inside of a hose and pasting a repair patch on a damaged part of the hose, the tool holding the repair patch and applying it to the damaged part. a pressure contact member provided with a pressure contact surface for pressure contact, a biasing means for urging the pressure contact surface upward perpendicularly to the inner wall surface of the bowse, and a pressure contact member that holds the pressure contact member and is inserted into the inside of the hose. The device is characterized in that it is equipped with an insertion bar for carrying out the operation.

(Embodiments of the invention) Hereinafter, the present invention will be specifically explained based on the accompanying drawings.

FIG. 1 is a sectional view of one embodiment of a repair tool used in the hose repair method according to the present invention. That is, in the hose repair tool of the present invention, the pressure contact member A is attached to the tip of the elongated insertion bar 1. The pressure contact member A has a pressure contact plate 3 that is disposed so as to be movable up and down along a shaft hole provided in the center of the upper lid portion of the cylindrical holding cover 2.
The holding cover 2 is urged toward the upper lid part by the holding cover 2.

The pressure plate 3 also holds a repair patch 5 such as a rubber patch.

Next, a method of actually repairing a pinhole formed in a rubberized fire hose (a hose whose inner surface is lined with rubber) using the above-mentioned hose repair tool will be explained.

In the repair method of the present invention, first, if necessary, moisture and dirt near the pinhole on the inner surface of the hose are thoroughly wiped off using an appropriate cleaning tool, and the area is cleaned with thinner or the like.

Next, as shown in Fig. 2, attach the hose repair tool to the hose 2.
0, place it in the part with the pinhole, and clamp and fix it with a suitable fixing device B. In this case, a U-shaped lock bin (with N) 21 is interposed between the suppressing plate 6 and the holding cover 2 so that the pressure contact plate inside the holding cover does not fall. In this state, as shown in the figure, after injecting an appropriate amount (about 1 to 2 CC) of adhesive such as rubber glue through the pinhole with the syringe 22, the lock bottle 21 is removed and the suppression plate 6 is pushed down. Spread the adhesive evenly to form an adhesive layer 23 around the pinhole (
(See Figure 3).

Next, apply the repair patch 5 to the pressure contact plate 3 of the hose repair tool using a slightly adhesive adhesive such as water glue. 4, and then inserted into the hose again and placed on the adhesive layer 23 as shown in FIG. Next, the lock bin 21 is removed and the suppression plate 6 is pushed down to temporarily adhere the patch 5 to the adhesive layer.

Next, as shown in FIG. 5, the pressure bonding plate C is inserted to the patch attachment position, and is clamped and pressurized by the fixed seaweed B to completely adhere the patch 5, completing the repair work.

In the method of the present invention, repair by adhering a repair patch from the outer surface of the hose is not necessary, but repair from the outer surface of the hose may also be performed depending on the state of damage to the hose surface.

〔Effect of the invention〕

In the hose repair method of the present invention, a patch is applied to a damaged part of the hose from the inner surface of the hose to repair it, thereby providing an excellent water leakage prevention effect.

Further, the hose repair tool of the present invention includes a pressure contact member for attaching a repair patch to a damaged part of the hose from inside the hose, and an insertion bar for holding the pressure contact member and inserting it into the inside of the hose. Therefore, the work of attaching the patch to the inner wall of the hose can be done easily, quickly and effectively.

Test Example A water pressure test was conducted at a pressure of 16 KIn/cd on the fire hose in which the pinhole had been repaired as in the above example, and as a result, no water leakage from the repaired portion was observed.

Furthermore, the pressure is 13 to 9/ci and the flow rate is 175 ON/min.
A water spray test was conducted under the condition of a flow rate of 20 m/sec.
No abnormality was observed at all.

1.1 A water pressure test was conducted on a fire hose in which pinholes were repaired in the same manner as in the above example except that a patch was attached from the outside wall of the hose, and the result was 8 Kg/c.
Water leakage was observed after 2 minutes at a pressure of ti. Furthermore, a water spray test was conducted under the same conditions as in the above test example, but water leakage from the repaired area was significant.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of one embodiment of the hose repair tool of the present invention, and FIGS. 2 to 5 are process cross-sectional views of the hose repair method of the present invention. DESCRIPTION OF SYMBOLS 1... Insertion bar, 2... Holding cover, 3... Pressing plate, 4... Spring, 5... Repair patch, 6... Pressing plate, 21... Lock pin, A・・・Pressure member, B・
...Fixing device, C...Crimp plate. Applicant's agent Mr. Sato Figure 1 Figure 2

Claims (1)

[Claims] 1. Inject adhesive from the damaged part of the outer wall of the hose, apply the adhesive around the damaged part of the inner wall of the hose, and place a repair patch on the damaged part from the inner wall of the hose. A method for repairing a hose, characterized by applying a repair patch to a damaged part by placing and pressing it. 2. A hose repair tool for inserting into the inside of a hose and pasting a repair patch on a damaged part of the hose, comprising: a pressure contact surface for holding the repair patch and pressing it against the damaged part; a pressure contact member provided with a biasing means for biasing the pressure contact surface vertically upward with respect to the inner wall surface of the hose;
A hose repair tool comprising an insertion bar for holding the pressure contact member and inserting it into the hose. 3. The hose repair tool according to claim 2, wherein the biasing means is a spring.