Hose draining device

Abstract

To provide a water draining tool that enables one worker to easily perform water draining work for a hose. [Solution] The water draining device 1 for a hose of the present invention is characterized by comprising a lower frame portion 3 having an axle portion 31 and a lower roller 32 rotatable around the axle portion 31, a side frame portion 4 having a bendable string-like body 41 having one end connected to each end of the axle portion 31 of the lower frame portion 3 and a side roller 42 rotatable around the string-like body 41, and a handle portion 2 to which the other end of the string-like body 41 of the side frame portion 4 is detachably connected.

Description

[Technical field]

[0001] The present invention relates to a water draining device for draining water remaining in a fire hose. [Background technology]

[0002] After spraying water during firefighting activities, etc., it is necessary to drain the water remaining in the hose. If the water is not drained, mold and bacteria may grow inside the hose, shortening the hose's lifespan. In cold regions, the water remaining in the hose may freeze, causing damage to the hose.

[0003] Fire hoses, particularly suction hoses, are used to take water from low-pressure or no-pressure sources such as fire hydrants, rivers, and water tanks and supply it to fire trucks and portable pumps. These hoses are made of highly rigid materials and always maintain a cylindrical shape, and the process of draining water from such hoses was generally carried out as follows.

[0004] Fig. 5 is a schematic diagram showing a conventional method for draining water remaining in a fire hose H. As shown in Fig. 5, conventionally, water is drained by a worker W moving from the rear end side in the water discharge direction F (the fire engine or portable pump side in the case where the hose H is a suction pipe) to the front end side (the opening side of the hose) while lifting the fire hose H, thereby sending the water remaining in the hose H in the water discharge direction F, and finally discharging the water from the opening side (not shown) on the front end side in the water discharge direction F.

[0005] However, the conventional water draining work shown in Fig. 5 requires the worker W to move while lifting the hose H in a half-squat position, which places an excessive burden on the legs and back of the worker W and requires a lot of effort. Moreover, considering that this work is done after the firefighting activity, the burden on the worker W is considerable. In addition, there is a risk that the worker W's hand will slip and the hose H will drop on his / her foot during the work, and the worker W may be injured, especially by the metal fittings of the hose H.

[0006] Therefore, various devices have been developed to assist in draining water from such hoses. For example, a drainage roller is used to assist in draining water from fire hoses, as shown in Non-Patent Document 1. The drainage roller in Non-Patent Document 1 is a device in which a roller with an H-shaped cross section in a plane parallel to the axial direction of a rod-shaped member is attached to the center of the rod-shaped member that serves as the rotating shaft.

[0007] Draining using the drainage roller in Non-Patent Document 1 is carried out by having two workers lift both ends of a rod-shaped member with a hose placed on the roller and move in the direction of water discharge. [Prior art documents] [Non-patent literature]

[0008] [Non-Patent Document 1] Iwasaki Seisakusho, Water Draining Roller for Fire / Watering Hose, [online], Monotaro Mail Order, [Searched on October 9, 2024], Internet [ https: / / www.amazon.co.jp / %E5%B2%A9%E5%B4%8E%E8%A3%BD%E4%BD%9C%E6%89%80-%E3%83%9B%E3%83%BC%E3%82%B9%E6%B0%B4%E6%8A%9C%E3%81%8D%E3%83%AD%E3%83%BC%E3%83%A9%E3%83%BC / dp / B07DJ4GSN5 ] Summary of the Invention [Problem to be solved by the invention]

[0009] However, the above-mentioned drainage roller requires two workers to operate it, and if one worker tries to do it, the worker's arm or arm and leg must straddle the hose, forcing the worker to work in an awkward position.

[0010] Therefore, the present invention has been made in consideration of the above-mentioned problems, and aims to provide a water draining device that allows a single worker to easily drain water from a hose in a natural position. [Means for solving the problem]

[0011] The present invention is characterized in that it is a water-draining device for a hose, comprising a lower frame portion which has an axis and a lower roller rotatable around the axis and which supports the hose to be drained, a pair of side frame portions which have a bendable string-like body, one end of which is connected to each end of the axis of the lower frame portion, and side rollers which are rotatable around the string-like body, and which cooperate with the lower frame portion to surround the hose, and a handle portion to which the other end of the string-like body of the side frame portions is detachably connected.

[0012] Preferably, the lower roller is formed of a single roller, which ensures adequate strength to support from below the hose to be drained.

[0013] It is also preferable that the string-like body has a plurality of side rollers attached thereto, in order to flexibly accommodate the outer shape, size, etc. of the hose from which water is to be drained.

[0014] More preferably, the side rollers are movable along the string-like body, which allows for more flexible handling. Also, by providing the string-like body with movement limiting sections for limiting the range of movement of the side rollers, it is possible to prevent the side rollers from coming into contact with the handle or the lower roller.

[0015] In addition, the handle portion has a ring-shaped carabiner portion with an opening and closing portion, and a grip portion provided on the carabiner portion at a position opposite the opening and closing portion, allowing the other end of each side frame body to be easily attached and detached and making it easy for an operator to hold it with one hand. Effect of the Invention

[0016] The water draining device according to the present invention allows a single worker to easily perform the task of draining water from a hose while maintaining a relaxed, upright posture.

[0017] Furthermore, since work can be performed while the hose is surrounded by the lower frame portion and the pair of side frame portions, the hose will not fall off and work can be performed safely. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1 is a schematic diagram showing a water draining device according to an embodiment of the present invention. [Diagram 2] 2 is a schematic diagram showing the water draining device of FIG. 1 with one of the string-like bodies of the side frame portion detached from the handle portion. FIG. [Diagram 3] FIG. 2 is a schematic diagram showing a state in which the water draining device according to the embodiment of the present invention is attached to a hose. [Figure 4] FIG. 2 is a schematic diagram showing a state in which water is drained from a hose using the water draining device according to the embodiment of the present invention. [Diagram 5] FIG. 1 is a schematic diagram showing a conventional method for draining water remaining in a fire hose. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Hereinafter, a water draining device according to an embodiment of the present invention will be described with reference to the drawings. Note that, unless otherwise specified, the positional relationship of up, down, left, right, etc. is based on the positional relationship shown in the drawings. Furthermore, the dimensional ratio of the drawings is not limited to the illustrated ratio.

[0020] <Basic configuration> Fig. 1 is a schematic diagram showing a water draining device 1 according to an embodiment of the present invention. This water draining device 1 is attached to a hose H when draining water from the hose H (see Fig. 4), and as shown in Fig. 1, the water draining device 1 includes a lower frame portion 3 that supports the hose H from below, a pair of side frame portions 4 each having one end connected to both ends of the lower frame portion 3 and surrounding the hose H in cooperation with the lower frame portion 3, and a handle portion 2 to which the other end of each of the side frame portions 4 is detachably connected. Therefore, since work can be performed while surrounding the hose H at least with the lower frame portion 3 and the pair of side frame portions 4, a single worker can safely perform the work without dropping the hose H.

[0021] <Lower frame configuration> The lower frame portion 3 includes a cylindrical shaft portion 31 and a lower roller 32 that is rotatable around the shaft portion 31 .

[0022] The shaft portion 31 is made of a material having sufficient strength, such as hard resin or metal, so as to support the hose H without bending. A connecting mechanism (not shown) is provided on the shaft portion 31, and one end of the side frame portion 4 is connected to the shaft portion 31 via the connecting mechanism. This connecting mechanism is, for example, a hole formed near both ends of the shaft portion 31, and it is possible to tie the string-like body 41 of the side frame portion 4 through this hole.

[0023] The lower roller 32 is a roller that rotates around the shaft portion 31 as a rotation axis. A single lower roller 32 is attached to the shaft portion 31. The lower roller 32 has a length that covers at least half, preferably at least 70%, of the overall length of the shaft portion 31. By configuring the lower roller 32 from a single roller in this manner, the shaft portion 31 that supports the hose H can be reinforced, and the shaft portion 31 can be appropriately prevented from bending due to the weight of the hose H, and therefore the hose H can be reliably supported from below.

[0024] The lower roller 32 is longer than the outer dimensions of the hose H that drains the water, has enlarged diameter portions 32a at both longitudinal ends, and has an H-shaped cross section in a plane parallel to the shaft portion 31. This prevents the hose H placed on the lower roller 32 from slipping off the lower roller 32 when the water draining device 1 is in use, and allows the lower roller 32 to roll smoothly along the underside of the hose H.

[0025] <Side frame configuration> Each of the pair of side frame portions 4 includes a bendable string-like body 41 and a side roller 42 that is rotatable around the string-like body 41 .

[0026] The string-like body 41 is a bendable wire having one end connected via a connecting mechanism to the vicinity of both ends of the shaft portion 31 of the lower frame portion 3. The other end of the string-like body 41 is connected to the handle portion 2. The string-like body 41 can be made of any material, such as a metal wire, chain, synthetic resin fiber, cotton, etc., as long as it is a wire that is bendable to conform to the outer shape of the hose H and can support the weight of the hose H.

[0027] As described above, one end of the string-like body 41 is connected to the shaft portion 31 of the lower frame portion 3 via a connecting mechanism (not shown). The other end of the string-like body 41, i.e., the end opposite to the end connected to the lower frame portion 3, has a ring-shaped portion (not shown) formed thereon, which makes it possible to attach the string-like body 41 to the handle portion 2.

[0028] The side rollers 42 are rollers that rotate around the string-like body 41 as a rotation axis, and multiple (two in this embodiment) side rollers 42 are attached to each string-like body 41. By attaching multiple side rollers 42 to each string-like body 41 instead of a single side roller 42, the string-like body 41 can easily deform in accordance with the outer shape of the hose H.

[0029] Furthermore, each of the side rollers 42 is not fixed to a specific position on the string-like body 41, but is movable along the string-like body 41. As a result, even if the string-like body 41 is bent to conform to the outer shape of the hose H, each of the side rollers 42 moves spontaneously to a position where it can maintain its rolling motion, and the side rollers 42 can smoothly roll along the side surface of the hose H.

[0030] More preferably, while allowing the side rollers 42 to move along the string-like body 41 as described above, the movement limiting portion 41a is provided to limit the range of movement to a certain range. This is because there is a risk that the side rollers 42 will not be able to roll properly if they get too close to the handle 2 or to the lower rollers 32 of the lower frame portion 3. There is no particular limitation on the movement limiting portion 41a as long as it can limit the movement of the side rollers 42, and any known means for preventing slipping out can be used. For example, a knot can be provided in the string-like body 41, and the knot can be used as the movement limiting portion 41a.

[0031] <Handle section configuration> The handle portion 2 is a portion to be held by the operator W, and the other end side of the string-like body 41 of the side frame portion 4 is detachably connected to the handle portion 2. The handle portion 2 has a ring-shaped carabiner portion 21 and a grip portion 22 attached to the carabiner portion 21.

[0032] The carabiner section 21 is a ring-shaped member having an opening / closing section 211 that can be opened inward. A commercially available carabiner can be used as the carabiner section 21, and the size and shape can be adjusted as appropriate. By opening the opening / closing section 211, the other end of the string-like body 41, on which the ring-shaped section is formed, can be attached to and detached from the carabiner section 21. In addition, the other end of the string body 41 can be movably connected along the shape of the carabiner section 21, which facilitates the connection work and ensures smooth rolling of the side rollers 42.

[0033] Grip portion 22 is a cylindrical structure attached to carabiner portion 21 at a position opposite opening / closing portion 211 of carabiner portion 21, and is the portion to be held by worker W. Grip portion 22 has a predetermined thickness that is thicker than carabiner portion 21 so that worker W can easily hold it. Moreover, grip portion 22 is preferably made of a material that has high friction and is not easily slippery in the hand so that worker W can easily hold it, and is preferably given a surface treatment such as unevenness to prevent the hand from slipping.

[0034] <How to use> Next, a method of draining water from a hose H using the above-mentioned water draining tool 1 will be described. Fig. 2 is a schematic diagram showing the water draining tool 1 of Fig. 1 with the string-like body 41 of one side frame part 4 removed from the handle part 2. Fig. 3 is a schematic diagram showing the water draining tool 1 according to the embodiment of the present invention attached to a hose H.

[0035] When using the water draining device 1, first, the opening / closing portion 211 of the handle portion 2 is opened inward as shown in Figure 2, and the string-like body 41 of one of the side frame portions 4 is removed from the carabiner portion 21.

[0036] Next, the water draining device 1 in the state shown in Fig. 2 is wound around the hose H, and then one of the string-like bodies 41 that was removed from the carabiner part 21 is reattached to the carabiner part 21 and the opening / closing part 211 is closed as shown in Fig. 3. This results in the water draining device 1 being attached to the hose H, with the hose H being surrounded by the lower frame part 3 and the pair of side frame parts 4. The water draining device 1 is attached to the end part of the hose H on the rear end side in the water discharge direction.

[0037] At this time, the string-like body 41 of the side frame portion 4 is in a bent state along the outer shape of the hose H as shown in FIG.

[0038] Furthermore, the hose H, which has a circular cross-sectional shape, comes into point contact with the lower roller 32 of the lower frame 3 at contact point P1, and also comes into point contact with the side rollers 42 of each side frame 4 at contact points P2, P3. Note that, in Fig. 3, the hose H is described as being large enough to contact the side rollers 42 of both side frames 4, but even if the hose H is smaller and only the side roller 42 of one of the side frame parts 4 comes into contact with the hose H, the water draining device 1 according to the present invention can properly perform water draining work.

[0039] Fig. 4 is a schematic diagram showing how water is drained from a hose H using the water draining tool 1 according to an embodiment of the present invention. After attaching the water draining tool 1 to the hose H, as shown in Fig. 4, a worker W holds the handle portion 2 of the water draining tool 1 in one hand and lifts the water draining tool 1, thereby allowing the worker W to lift the hose H in a relaxed position with his / her back straight.

[0040] Then, in this relaxed position, the worker W moves while lifting the fire hose H from the rear end side to the front end side in the water discharge direction F. At this time, the lower roller 32 and the side roller 42 that contact the hose H roll, allowing the water draining device 1 to be easily moved along the hose H. In this way, the water remaining in the hose H is sent in the water discharge direction F and is finally discharged from an opening (not shown) on the front end side of the water discharge direction F.

[0041] There are various types of fire hoses H, including a water intake hose called a suction pipe that takes in water from a low-pressure or non-pressure water intake source, and a hose called a shape-retaining hose that is made of a highly rigid material and always maintains a cylindrical shape, which may have unevenness formed along the circumferential direction over their entire length. Even when the hose H is such a hose, the lower roller 32 and the side rollers 42 are in point contact with the hose H, making it easier for the lower roller 32 and the side rollers 42 to overcome the unevenness, and the worker W can easily move the water draining tool 1 along the hose H.

[0042] Furthermore, since the string-like body 41 of the side frame portion 4 is bendable, even if the hose has a certain irreversible bending deformation (habit), the worker W can easily move the water draining device 1 along the deformed part.

[0043] With the water draining device 1 having the above-mentioned configuration, a single worker can easily perform the water draining work of the hose in a relaxed position with the worker's back straight. In addition, the lower frame 3 properly supports the hose H from below, and the lower frame and the pair of side frames work together to surround the hose H, so the work can be performed safely without dropping the hose H.

[0044] It should be noted that the present invention is not limited to the water draining device 1 according to the above-described embodiment, and various modifications can be adopted without departing from the technical scope of the invention.

[0045] For example, in the above-described embodiment, two side rollers 42 were provided for each string-like body 41, but the present invention is not limited to this, and any configuration that does not hinder deformation of the side rollers 42 may be provided, and one, three or more side rollers 42 may be provided. [Explanation of symbols]

[0046] 1...water draining device, 2...handle portion, 3...lower frame portion, 4...side frame portion, 21...carabiner portion, 22...grip portion, 31...shaft portion, 32...lower roller, 32a...expansion portion, 41...string-like body, 41a...movement limiting portion, 42...side roller, 211...opening / closing portion, F...water discharge direction, H...hose, P1...contact point, P2...contact point, P3...contact point, W...operator.

Claims

1. A water draining device for a hose comprising: a lower frame portion having an axis portion and a lower roller rotatable around the axis portion, and supporting the hose to be drained; a pair of bendable string-like bodies having one end connected to each end of the axis portion of the lower frame portion, and side rollers rotatable around each of the string-like bodies, and a pair of side frame portions which cooperate with the lower frame portion to surround the hose; and a handle portion to which the other end of the string-like bodies of each side frame portion is detachably connected.

2. 2. The water draining device for a hose according to claim 1, wherein the lower roller is constituted by a single roller.

3. 2. A hose draining device as claimed in claim 1, wherein each of said strands has a plurality of said side rollers attached thereto.

4. 4. The hose draining device according to claim 3, wherein each of said side rollers is movable along said string.

5. 5. The water draining device for a hose according to claim 4, wherein said string-like body is provided with a movement limiting portion for limiting a range of movement of said side rollers.

6. 2. The water draining device for a hose as described in claim 1, wherein the handle portion has a ring-shaped carabiner portion having an opening and closing portion, and a grip portion provided on the carabiner portion at a position opposite the opening and closing portion.

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