JP4223770B2 - Damaged hole repair tool and damaged hole repair method for hose - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a damaged hole repair tool for a hose and a damaged hole repair method.
[0002]
[Prior art]
For example, hoses used for fire fighting are often used in harsh environments, so that the surface of the hose is damaged and holes are opened in the hose. If fire extinguishing water leaks from such a damaged hole, there is a risk that the fire extinguishing operation may be hindered due to insufficient water volume, and the area around the fire extinguishing site may be submerged. It was necessary to repair the hose.
[0003]
As a repair work for such a damaged hole, conventionally, a method of covering the damaged hole from the outer peripheral surface side of the hose and bonding the periphery of the joint cloth with an adhesive such as a resin has been generally performed.
[0004]
[Problems to be solved by the invention]
However, in the repair of damaged holes using the above-mentioned conventional seam, the seam is covered with the seam from the outer peripheral surface side of the hose, so if water is passed through the hose, water pressure is directly applied to the damaged hole inside the hose. There was a risk that the joint cloth would peel off from the outer peripheral surface of the hose and water would leak again from the damaged hole.
[0005]
In addition, since the adhesive applied to the periphery of the joint fabric hardens, the joint fabric adheres to the outer peripheral surface of the hose, so that the stretch condition differs between the material of the hose itself and the joint fabric and the cured adhesive. In addition, when the hose expands or contracts due to pressure applied to the inside of the hose, there is a possibility that the adhesive may crack or the joint fabric may be peeled off from the outer peripheral surface of the hose.
[0006]
In addition, in the repair work of the damaged hole using the above-described conventional joint cloth or patch, since the damage hole was only plugged from the outer peripheral surface side of the hose, the joint cloth is exposed on the outer peripheral surface of the hose, There is a possibility that the joint cloth or the patch may be peeled off from the outer peripheral surface of the hose due to the joint cloth being caught by an obstacle.
[0007]
In order to solve this problem, it is only necessary to attach the patch from the inner peripheral surface side of the hose so that the patch is not exposed from the outer peripheral surface of the hose, but a lightweight patch is inserted from the end of the hose. Thus, the work to bring the damage hole to the back side is not an easy work, and there is a possibility that a great deal of labor and time may be required.
[0008]
Therefore, the present invention provides a tool and a working method for facilitating the work of inserting a patch from the end of the hose and bringing it to the back side of the damaged hole.
[0009]
[Means for Solving the Problems]
That is, in the present invention according to claim 1, there is provided a damaged hole repair tool used for repairing a hose for closing a damaged hole formed in the hose by thermally welding a patch to the inner peripheral surface of the hose. A patch holding portion for detachably holding the patch is formed at the distal end portion of the body formed to be insertable, and a patch holding portion for holding the patch is formed on the body .
[0011]
Moreover, in this invention which concerns on Claim 2, it decided to connect with the said trunk | drum the cleaning body in a hose for cleaning the inner peripheral part of a hose.
[0012]
Moreover, in this invention which concerns on Claim 3 , it is a damage hole repair method of the hose which plugs up the damage hole made in the hose by heat-welding the patch to the inner peripheral surface of the hose, and is more effective than the damage hole made in the hose. Hold the hose at the distal end position, drop the damaged hole repair tool holding the patch from the proximal end side of the hose to the clamping position near the damaged hole, hold the hose and patch together near the damaged hole, and then hose The damage hole repair tool alone was removed from the inside of the hose by inverting the top and bottom, and further, the patch was thermally welded to the inner peripheral surface of the hose by heat compression from the outside of the hose.
[0013]
Moreover, in this invention which concerns on Claim 4 , the separator which prevents that the internal peripheral surfaces of a hose are adhere | attached at the time of the heat welding of the said patch is affixed on the back surface of a patch, and it attaches to a hose after the heat welding of a patch. It was decided to remove the separator from the patch by passing water.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
The damaged hole repair tool for a hose according to the present invention is a patch for closing a damaged hole formed in a hose by being thermally welded to the inner peripheral surface of the hose at the tip of a fuselage formed so as to be insertable inside the hose. In addition to forming a patch holding portion for detachably holding the left and right side portions of the body, a patch holding portion for holding the patch on the same body is formed .
[0015]
Then, the damaged hole is repaired as follows.
(1) A hose is clamped by a clip in the vicinity of a damaged hole formed in the hose and at the tip side of the damaged hole.
(2) After attaching the patch to the damaged hole repair tool, the damaged hole repair tool is dropped by its own weight from the base end side of the hose to the clamping position near the damaged hole.
(3) The clip is removed while holding the internal damaged hole repair tool from the outer peripheral surface of the hose, and then the hose and the internal patch are sandwiched near the damaged hole using the clip.
(4) The hose is turned upside down with the clip holding the hose and the patch. Then, although the damaged hole repair tool falls due to its own weight, the patch is held in the vicinity of the damaged hole because it is held between the clips.
(5) Remove the clip from the hose.
(6) Using a thermocompression bonding tool, the hose and the patch are heated and compressed simultaneously from the outside of the hose, and the patch is thermally welded to the inner peripheral surface of the hose.
[0016]
As described above, the damage hole repair tool according to the present invention forms a patch holding portion for detachably holding the patch at the distal end portion of the fuselage formed so as to be insertable into the hose, and holds the patch between the fuselage. Since the patch clamping portion is formed , the damaged hole repairing work can be performed by inserting the damaged hole repairing tool equipped with the patch into the hose, and the workability of the repairing work can be improved. In particular, since the patch pinching part that holds the patch is formed on the body, it is possible to prevent the patch from falling off the damaged hole repair tool when the damaged hole repair tool fitted with the patch is inserted into the hose. This also improves the workability of the repair work.
[0018]
Moreover, since the in-hose cleaning body for cleaning the inner peripheral part of the hose is connected to the body, the inside of the hose can be cleaned simultaneously with the repair work of the damaged hole.
[0019]
In addition, the method for repairing a damaged hole in a hose according to the present invention includes holding the hose at a position closer to the tip side than the damaged hole formed in the hose, and moving the damaged hole repair tool holding the patch from the proximal end side of the hose to Drop to the clamping position, clamp the hose and patch together near the damaged hole, then remove the damaged hole repair tool from the inside of the hose by turning the hose upside down, and then heat compress from the outside of the hose Since the patch is thermally welded to the inner peripheral surface of the hose, it is possible to quickly and easily insert the patch from the end of the hose and position it on the back side of the damaged hole, from the inner peripheral surface side of the hose. The patch can be applied, and the damaged hole can be repaired without exposing the patch from the outer peripheral surface of the hose.
[0020]
In particular, a separator that prevents the inner peripheral surfaces of the hose from adhering to each other during the thermal welding of the patch is attached to the back surface of the patch, and after the thermal welding of the patch, the separator is removed from the patch by passing water through the hose. In this case, it is possible to prevent the inner peripheral surfaces of the hose from being bonded to each other when the patch is thermally welded, and it is possible to easily remove the separator that is no longer necessary.
[0021]
When a water-soluble sheet is used as the separator, the separator can be discarded simply by passing water through the hose.
[0022]
【Example】
Embodiments of the present invention will be specifically described below with reference to the drawings. In the following embodiments, a case where a fire hose is used as a hose is described. However, the present invention is not limited to a fire hose and can be applied to all hoses.
[0023]
[First embodiment]
An example of a damaged hole repair tool used for the damaged hole repair method of the hose is shown in FIGS . The damaged hole repair tool 1 is a substantially rectangular parallelepiped extending in the front and rear formed in a form that can be inserted into the fire hose 2 (that is, a shape smaller than the inner diameter of the fire hose 2 and the joint connected to the tip of the fire hose 2). The left and right edges of the rectangular thin plate-like patch 5 for closing the damage hole 4 formed in the fire hose 2 by being thermally welded to the inner peripheral surface of the fire hose 2 are attached to and detached from the tip of the body 3 forming a pair of left and right patch holding pieces 6,6 which extends in the longitudinal holding freely.
[0024]
Grooves 7 and 7 extending in the front-rear direction are formed in the center of the inner side of the patch holding pieces 6 and 6, and grooves 8 extending in the left and right direction are provided in the center of the front end of the body 3. The grooves 7 and 8 form a patch holding portion 9 having a substantially U-shaped groove shape in plan view.
[0025]
Then, the left and right edge portions of the patch 5 are inserted into the grooves 7 and 7 of the patch holding pieces 6 and 6 from the front side of the body 3 (patch holding pieces 6 and 6), and the patch 5 is inserted into the groove 8 of the body 3. Insert the rear edge. Then, the patch 5 is detachably held at the left and right edge portions and the rear edge portion by the patch holding portion 9.
[0026]
Here, a pair of left and right patch holding pieces 6, 6 are formed at the tip of the body 3, and the left and right edges of the patch 5 are held by the patch holding pieces 6, 6 so that the upper and lower sides of the patch 5 are open. In this state, the patch 5 can be inserted into the patch holding part 9 while picking the central part of the patch 5 from above and below, and the patch 5 can be inserted easily. Similarly, it is possible to easily remove the patch 5 from the patch holding portion 9 while picking the central portion of the patch 5 from above and below.
[0027]
The trunk | drum 3 is increasing the weight by expanding the lower part. Further, an in-hose cleaning body 10 for cleaning the inner peripheral portion of the fire hose 2 is continuously provided on the upper portion of the body 3 so as to face rearward. The in-hose cleaning body 10 has a sponge 13 or a cloth wrapped around the rear end portion so that the inner peripheral portion of the fire hose 2 can be cleaned with the sponge 13 or the like. The in-hose cleaning body 10 can also be used as a grip for making it easier to carry the damaged hole repair tool 1.
[0028]
Next, a method for closing the damaged hole 4 formed in the fire hose 2 using the damaged hole repairing tool 1 described above (damaged hole repairing method) will be described with reference to FIG.
[0029]
First, as shown in FIG. 3 (a), the fire hose 2 is clamped by a clip 11 in the vicinity of the damage hole 4 formed in the fire hose 2 and at the tip side of the damage hole 4.
[0030]
Next, as shown in FIG. 3 (b), the patch 5 is inserted into the patch holding part 9 of the damaged hole repairing tool 1, and then, as shown in FIG. 3 (c), the base end side of the fire hose 2 is inserted. Then, the damaged hole repair tool 1 is dropped to a clamping position in the vicinity of the damaged hole 4 (a position where the fire hose 2 is clamped by the clip 11 (see FIG. 3A)) (see FIG. 3D). At that time, since the damage hole repair tool 1 is increased in weight by expanding the lower part of the body 3, the damage hole repair tool 1 can be easily dropped by its own weight and can be used as a fire hose 2. Because the fire hose 2 is clamped by the clip 11 in the vicinity of the damaged hole 4 and at the tip side of the damaged hole 4, the damaged hole repair tool 1 dropped by its own weight stops at the clamping part by the clip 11. The damaged hole repair tool 1 can be quickly and easily moved to a desired position (a clamping position in the vicinity of the damaged hole 4).
[0031]
If the clip 11 is attached to the tip side of the damage hole repair tool 1 from the damage hole 4, the damage hole repair tool 1 is inserted when the damage hole repair tool 1 is inserted into the fire hose 2. The inner peripheral portion of the damaged hole 4 can be cleaned with the sponge 13 wound around the one in-hose cleaning body 10, whereby the patch 5 described later can be easily welded.
[0032]
Next, while holding the internal damaged hole repair tool 1 from the outer peripheral surface of the fire hose 2, the clip 11 is removed, and then the fire hose 2 and the interior of the fire hose 2 near the damaged hole 4 are used. The patch 5 is sandwiched (see FIG. 3 (e)).
[0033]
Next, as shown in FIG. 3 (f), the fire hose 2 is turned upside down with the clip 11 sandwiching the fire hose 2 and the patch 5. Then, the damaged hole repair tool 1 falls due to its own weight, but the patch 5 is held in the vicinity of the damaged hole 4 because it is sandwiched between the clips 11 as shown in FIG.
[0034]
Next, the clip 11 is removed from the fire hose 2 as shown in FIG. In this way, the patch 5 can be positioned inside the fire hose 2 and behind the damaged hole 4 in a short time and easily.
[0035]
Next, as shown in FIG. 3 (h), the fire hose 2 and the patch 5 are simultaneously heated and compressed from the outside of the fire hose 2 using a thermocompression bonding tool 12. Thereby, the patch 5 can be heat-welded to the inner peripheral surface of the fire hose 2.
[0036]
Thus, if the damaged hole 4 of the fire hose 2 is repaired using the damaged hole repair tool 1, it is quick to insert the patch 5 from the end of the fire hose 2 and position it on the back side of the damaged hole 4. The patch 5 can be affixed from the inner peripheral surface side of the fire hose 2 and the damaged hole 4 can be repaired without exposing the patch 5 from the outer peripheral surface of the fire hose 2.
[0037]
For this reason, the patch 5 used for repair is not caught by an obstacle and peeled off from the fire hose 2, and fire extinguishing water does not leak from the fire hose 2 again. The life of the fire hose 2 can be extended.
[0038]
In addition, since the patch 5 made of a rubber material having elasticity is bonded to the fire hose 2 by heat welding, the patch 5 itself and the adhesive have elasticity, and the fire hose 2 has an inside. Even if the fire hose 2 expands and contracts due to pressure, the patch 5 and the adhesive expand and contract in the same way, preventing the adhesive from cracking and the digestion water from leaking out from the fire hose 2 can do.
[0039]
[Second Embodiment]
The damaged hole repair tool 21 of the hose according to the second embodiment can be inserted into the fire hose 2 in the same manner as the damaged hole repair tool 1 according to the first embodiment, as shown in FIGS. A rectangle for closing the damage hole 4 formed in the fire hose 2 by being thermally welded to the inner peripheral surface of the fire hose 2 at the front end portion of the substantially rectangular body 23 that extends in the longitudinal direction. Forms a pair of left and right patch holding pieces 26 and 26 that extend in the front and rear directions to hold the left and right sides of a thin paper-like separator 24 made of a water-soluble material affixed to the back surface of the thin plate-like patch 25 and detachably. It is a thing.
[0040]
The central portion of the patch holding piece 26 forms a stepped slits 27, 27 extending back and forth, also, the tip center of the fuselage 2 3 a groove 28 that extends in the lateral, these The stepped slit 27 and the groove 28 form a substantially U-shaped patch holding portion 29 in plan view. Thus, in this embodiment, the step holding slits 27, 27 are formed in the patch holding pieces 26, 26, so that the left and right edges of the patch 25 at the step portion of the step slit 27 as shown in FIG. Can be held, and the left and right side portions of the separator 24 can be held by the slit portion of the stepped slit 27, whereby the patch 25 can be satisfactorily attached to the patch holding portion 29 in the normal position. .
[0041]
Further, a patch clamping portion 31 that clamps the rear end portion of the patch 25 is formed inside the body 23. The patch clamping unit 31 has a clamping piece 32 having a tip bent downwardly attached to the inside of the body 23. In the figure, 34 is a mounting screw.
[0042]
Thus, since the damaged hole repair tool 21 is provided with the patch clamping portion 31 for clamping the patch 25, when the damaged hole repair tool 21 is inserted into the fire hose 2, the fire hose 2 Even if the left and right side portions of the separator 24 and the patch 25 collide with the inner peripheral portion of the cover 24, it is possible to prevent the separator 24 and the patch 25 from dropping from the patch holding portion 29 in advance.
[0043]
In addition, the fuselage 23 is increased in weight by bulging the lower part, and an in-hose cleaning body 30 for cleaning the inner peripheral part of the fire hose 2 is connected to the upper part in a rearward direction. A sponge 33 or cloth is wound around the rear end portion of the cleaning body 30 so that the inner peripheral portion of the fire hose 2 can be cleaned with the sponge 33 or the like. The in-hose cleaning body 30 can also be used as a grip for making the damaged hole repair tool 21 easy to carry.
[0044]
Damage hole repair tool 21 according to the second embodiment is also used in the same manner as the damage hole repair tool 1 which is hand explained in the first embodiment.
[0045]
In this embodiment, the separator 24 together with the patch 25 is also inserted into the fire hose 2 and is heat-welded in that state. Therefore, when the patch 25 is thermally welded, the separator 24 is interposed between the back surface of the patch 25 and the inner peripheral surface of the fire hose 2, and the melted patch 25 is attached to both sides of the fire hose 2 (the surface of the patch 25). Can be prevented from adhering to the side having the damaged hole 4 to be attached and the opposite side), and the workability of the repair work can be improved.
[0046]
The separator 24 can be removed by water pressure by passing water through the fire hose 2 after the patch 25 is thermally welded. In particular, when a water-soluble sheet is used as the separator 24, it can be discarded simply by passing water through the fire hose 2.
[0047]
[Third embodiment]
As shown in FIGS. 8 and 9, the hose damage hole repair tool 41 according to the third embodiment has a substantially cylindrical body 43 that extends in the front-rear direction so as to be inserted into the fire hose 2. The water-soluble material attached to the back of the rectangular thin plate-shaped patch 25 and the patch 25 for closing the damage hole 4 formed in the fire hose 2 by being thermally welded to the inner peripheral surface of the fire hose 2 A patch holding portion 49 is formed that detachably holds the left and right side portions of a thin paper-like separator 24 made of a material.
[0048]
The patch holding part 49 forms a pair of left and right slits 47, 47 in the cylindrical body 42 formed at the tip of the body 43, and the left and right side parts of the separator 24 and the patch 25 are inserted through the slits 47, 47. To be able to hold.
[0049]
Further, a patch holding portion 44 that holds the rear end portion of the patch 25 is formed inside the body 43 to prevent the patch 25 from falling off. Similar to the second embodiment, the patch holding portion 44 has a holding piece 45 bent at the tip end downward attached to the inside of the body 43.
[0050]
The damaged hole repair tool 41 according to the third embodiment is also used in the same manner as the damaged hole repair tool 1 described in the first embodiment or the damaged hole repair tool 21 according to the second embodiment.
[0051]
[Fourth embodiment]
The damaged hole repair tool 51 of the hose according to the fourth embodiment can be inserted into the fire hose 2 as shown in FIGS. 10 to 12 (that is, the fire hose 2 and the joint connected to the tip of the fire hose 2). Damage to the fire hose 2 by being thermally welded to the inner peripheral surface of the fire hose 2 at the front end of a substantially rectangular body 53 that extends in the front-rear direction formed in a shape smaller than the inner diameter of the fire hose 2 A rectangular thin plate patch 55 for closing the hole 4 and a pair of left and right patches extending before and after holding the left and right side portions of a thin paper-like separator 54 made of a water-soluble material attached to the back surface of the patch 55 detachably The holding pieces 56 and 56 are formed.
[0052]
The patch holding pieces 56, 56 are formed with slits 57, 57 extending in the front-rear direction, and the front end portion of the body 53 is formed with a groove 58 extending in the left-right direction. The patch holding pieces 56 and 56 form a patch holding portion 59 that is substantially U-shaped in plan view.
[0053]
Further, the groove 58 is formed with a patch clamping portion 61 that clamps the rear end portion of the patch 55. As shown in FIG. 12, the patch clamping portion 61 has two stages with the vertical width facing the back side. It is narrowed to. The rear end portion of the patch 55 is sandwiched by the front narrow portion 58a, and the narrow end portion of the separator 54 is sandwiched by the rear narrow portion 58b.
[0054]
As described above, in this embodiment, since the patch holding portion 61 for holding the patch 55 and the separator 54 is provided, when the damaged hole repair tool 51 is inserted into the fire hose 2, the fire hose is used. Even if the left and right side portions of the separator 54 and the patch 55 collide with the inner peripheral portion of the two, it is possible to prevent the separator 54 and the patch 55 from dropping from the patch holding portion 59 in advance.
[0055]
The body 53 is increased in weight by bulging the lower part. Further, an in-hose cleaning body 60 for cleaning the inner peripheral portion of the fire hose 2 is continuously provided on the upper portion of the body 53 so as to face rearward. The in-hose cleaning body 60 has a sponge or cloth wound around the rear end portion so that the inner peripheral portion of the fire hose 2 can be cleaned with the sponge or the like. The in-hose cleaning body 60 can also be used as a grip for easily carrying the damaged hole repair tool 51.
[0056]
The damaged hole repair tool 51 according to the fourth embodiment is also used in the same manner as the damaged hole repair tool 1 described in the first embodiment or the damaged hole repair tool 21 according to the second embodiment.
[0057]
【The invention's effect】
According to the present invention, it is possible to quickly and easily insert the patch from the end of the hose and position it on the back side of the damaged hole, thereby attaching the patch from the inner peripheral surface side of the hose. Damaged holes can be repaired without exposing them from the outer surface of the hose.Therefore, the patch used for repair will not be caught by an obstacle and peeled off from the fire hose. It can be used, and the life of the hose can be extended.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a damaged hole repair tool described in the method for repairing damaged holes in a hose according to the present invention.
FIG. 2 is a front view of the same.
FIG. 3 is an explanatory view showing a damaged hole repair method according to the present invention.
FIG. 4 is a cross-sectional view showing a state where an internal patch is sandwiched from the outside of a fire hose by a clip.
FIG. 5 is a perspective view showing a damaged hole repair tool according to a second embodiment.
FIG. 6 is a front view of the same.
FIG. 7 is a side sectional view of the same.
FIG. 8 is a perspective view showing a damaged hole repair tool according to a third embodiment.
FIG. 9 is a front view of the same.
FIG. 10 is a perspective view showing a damaged hole repair tool according to a fourth embodiment.
FIG. 11 is a front view of the same.
FIG. 12 is a side sectional view of the same.
[Explanation of symbols]
1 , 21, 41, 51 Damage hole repair tool 2 Fire hose 3 , 23, 43, 53 Body 4 Damage hole 5 , 25, 55 Patch 6 , 26, 56 Patch holding piece 7 , 8 , 28, 58 groove 9 , 29, 49, 59 patch holding part 10 , 30, 60 in- hose cleaning body 11 clip 12 thermocompression bonding tool 13 , 33 sponge
24, 54 separator
27, 27 Stepped slit
31, 44, 61 Patch holding part
47,57 slit

Claims (4)

A damage hole repairing tool used for repairing a hose that closes a damage hole formed in the hose by thermally welding a patch to the inner peripheral surface of the hose,
A hose characterized in that a patch holding part for detachably holding a patch is formed at a distal end portion of a body formed so as to be insertable into the hose and a patch holding part for holding the patch is formed on the body . Damage hole repair tool. The damaged hole repair tool for a hose according to claim 1, wherein an in-hose cleaning body for cleaning an inner peripheral portion of the hose is continuously provided on the body . A method of repairing a damaged hole in a hose by closing a damaged hole in the hose by thermally welding a patch to the inner peripheral surface of the hose,
  Hold the hose at the tip side from the damage hole made in the hose, drop the damage hole repair tool holding the patch from the proximal end side of the hose to the holding position near the damage hole, and connect the hose and patch near the damage hole. After that, remove the damaged hole repair tool only from the inside of the hose by turning the hose upside down, and heat-compress the patch from the outside of the hose to heat weld the patch to the inner peripheral surface of the hose. Hose damage hole repair method characterized. A separator that prevents the inner peripheral surfaces of the hose from adhering to each other during the thermal welding of the patch is attached to the back surface of the patch, and the separator is removed from the patch by passing water through the hose after the thermal welding of the patch. The damaged hole repairing method for a hose according to claim 3 .

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