Concrete pouring hose and concrete pouring method

Abstract

To make it possible to reduce cost and realize easy placing work.SOLUTION: A placing hose 10 comprises multiple hose units 16. A downstream end of an upstream side hose unit 16 and an upstream end of a downstream side hose unit 16 are detachably connected by a slide fastener 24. The slide fastener 24 is provided outside a skirt part 30 mounted at a downstream end. The hose unit 16 is divided into multiple first hose units 20 and multiple second hose units 22 connected serially to a downstream side of the first hose unit 20. The second hose unit 22 is shorter than the first hose unit 20 and the whole length of the multiple second hose units 22 serially connected is less than or equal to the length of one first hose unit 20. The hose units 16 of the placing hose 10 are removed from the downstream side according to the placed height within a frame mold 14. The slide fastener 24 is provided along the whole circumference of the hose unit 16.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a pouring hose and a pouring method for pouring concrete into a formwork. [Background technology]

[0002] To construct a concrete structure, a form of a given shape is constructed, and concrete is poured into the form. When pouring concrete, concrete pipes are installed on the wall, valves are attached to the pouring points between the pipes, and a hose is attached to the end of the pipes to pour the concrete. A pouring hose such as that described in Patent Document 1 is used to pour the concrete.

[0003] The outlet of the concrete pouring hose is set to be at a specified height from the bottom or the surface to be poured, so if the structure is a wall or other structure of a certain height, it is necessary to cut the hose several times while pouring. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2008-249016 A Summary of the Invention [Problem to be solved by the invention]

[0005] When cutting the hose while pouring concrete, general-purpose sanitary hoses or rubber hoses are used and are treated as consumables. This means that a new hose must be prepared for each pour, which increases costs, and it is also troublesome to dispose of the hose as waste after pouring. In addition, it is necessary to prepare a blade or other tool to cut the hose, and moreover, efficient cutting work requires some skill.

[0006] The present invention has been made in consideration of the above problems, and aims to provide a concrete pouring hose and a concrete pouring method that can reduce costs and facilitate concrete pouring operations. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems and achieve the object, the concrete pouring hose of the present invention is a concrete pouring hose in which a plurality of hose units are connected in series, and the hose units are detachably connected to each other by fasteners.

[0008] With this type of concrete pouring hose, the total length can be adjusted by sequentially removing the individual hoses of the concrete pouring hose from the downstream side according to the poured height in the formwork. This removal work can be easily performed by simply operating the fastener, and no tools or blades are required, making concrete pouring easy. In addition, each removed hose does not need to be disposed of as waste after pouring is completed, and can be reused, making it possible to reduce costs depending on the number of pouring operations.

[0009] The hose units may be divided into a plurality of first hose units connected in series and a plurality of second hose units connected in series downstream of the plurality of first hose units, the second hose units being shorter than the first hose unit, and the total length of the plurality of second hose units connected in series may be less than the length of one of the first hose units.

[0010] The hose unit may have a cylindrical skirt portion at a downstream end, and the fastener may be provided on the outside of the skirt portion.

[0011] The fastener may be a slide fastener provided around the entire periphery.

[0012] The hose unit may be further divided into an upstream-most hose unit provided on the most upstream side, and a ring for preventing removal may be provided at the upstream end of the upstream-most hose unit, and the inner diameter of the ring for preventing removal may be smaller than the outer diameter of a band that fixes the upstream-most hose unit to the concrete discharge outlet.

[0013] In addition, in order to solve the above-mentioned problems and achieve the object, the concrete pouring method of the present invention is a concrete pouring method that uses a concrete pouring hose in which multiple hose units are connected in series and detachably by fasteners, and is characterized in that the concrete pouring hose is inserted into a frame form, concrete is poured into the frame form from the concrete pouring hose, and the hose units of the concrete pouring hose are removed from the downstream side depending on the poured height within the frame form.

[0014] The hose units are divided into a plurality of first hose units connected in series and a plurality of second hose units connected in series downstream of the plurality of first hose units, the second hose units are shorter than the first hose units, the total length of the plurality of second hose units connected in series is equal to or less than the length of one of the first hose units, and after all of the second hose units are removed according to the poured height, the first hose unit on the most downstream side is removed and the plurality of second hose units are reattached. Effect of the Invention

[0015] The concrete pouring hose and concrete pouring method of the present invention can reduce costs and facilitate concrete pouring operations. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a schematic diagram showing a concrete pouring hose and a frame mold according to an embodiment. [Diagram 2] FIG. 2 is an exploded view of the concrete pouring hose. [Diagram 3] FIG. 3 is a diagram illustrating a casting method according to an embodiment, where (a) is a diagram showing the initial stage, (b) is a diagram showing the first step, (c) is a diagram showing the second step, (d) is a diagram showing the third step, (e) is a diagram showing the fourth step, (f) is a diagram showing the fifth step, and (g) is a diagram showing the sixth step. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, an embodiment of a concrete driving hose and a concrete driving method according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiment.

[0018] Fig. 1 is a schematic diagram of a concrete driving hose 10 according to an embodiment of the present invention. Fig. 2 is an exploded view of the concrete driving hose 10.

[0019] The concrete pouring hose 10 is connected to a piping outlet 12 arranged above, and is used to pour concrete into a form 14 below. A valve 13 is provided at the piping outlet 12. The concrete pouring hose 10 is applicable when the form 14 to be poured is a relatively high structure such as a wall. The form 14 may be provided above ground or underground. The piping outlet 12 is connected to a concrete supply source such as an agitator truck. A plurality of concrete pouring hoses 10 may be provided depending on the size of the form 14. When a plurality of concrete pouring hoses 10 are provided for the form 14, concrete may be poured sequentially by opening and closing each valve 13.

[0020] The concrete pouring hose 10 is composed of a plurality of hose units 16. The hose units 16 are divided into one most upstream hose unit 18, a plurality of first hose units 20 successively connected below the most upstream hose unit 18, and a plurality of second hose units 22 successively connected below the plurality of first hose units 20. Note that Fig. 2 shows one each of the most upstream hose unit 18, the first hose unit 20, and the second hose unit 22 as representative examples.

[0021] The following description of the lengths of the most upstream hose unit 18, the first hose unit 20, and the second hose unit 22 does not include the skirt portion 30 described below, but basically refers to the length from the fastener unit 24a to the fastener unit 24b described below. The most upstream hose unit 18 and the first hose unit 20 are set to the same length. An appropriate number of first hose units 20 are connected in series according to the depth of the frame mold 14. The length of the second hose unit 22 is 1 / 2 or less of the first hose unit 20, and the total length of the multiple second hose units 22 connected in series is less than the length of one first hose unit 20.

[0022] Specifically, in this embodiment, the length of the second hose unit 22 is 1 / 4 of the length of the first hose unit 20. The second hose units 22 are provided in the same number as one first hose unit 20. That is, in the example of FIG. 1, the length H1 of the most upstream hose unit 18 and the first hose unit 20 is 2 m, while the length H2 of the second hose unit 22 is 0.5 m, and four of them are connected in series. The length of the second hose unit 22 may be set to correspond to the height of casting in one go into the formwork 14 (see symbol H02 in FIG. 3).

[0023] Since the first hose unit 20 is appropriately long, the number of hose units 16 constituting the concrete pouring hose 10 can be reduced even if the concrete pouring hose 10 is relatively long. Since the second hose unit 22 is appropriately short, the overall length of the concrete pouring hose 10 can be appropriately adjusted according to the amount of concrete poured at one time, as described below. However, depending on the conditions, the first hose unit 20 may be omitted, and the entire length of the concrete pouring hose 10 may be composed of the second hose unit 22.

[0024] The individual hose units 16 are detachably connected to each other by slide fasteners (fasteners) 24. The slide fasteners 24 are open fasteners. The base of the hose unit 16 is, for example, a sheet body rolled into a cylindrical shape and connected at a seam 16a. The sheet body used as the material for the hose unit 16 is, for example, a fabric such as a woven fabric, knitted fabric, mesh, or net made of resin fibers that has been dipped, coated, laminated, or lined with a synthetic resin. The inner surface of the hose unit 16 may be made of a fabric that makes it difficult for concrete to adhere to it.

[0025] The hose unit 16 has a diameter that is necessary and sufficient for pouring concrete. As described below, the hose unit 16 does not need to be cut at the construction site, so it can be constructed with a sufficiently high strength, and is excellent in terms of the stable supply of concrete and durability. The hose unit 16 is made of a thin sheet body, so it is flexible and easy to handle. However, in Figure 2, the hose unit 16 is shown as being made of a thick material to make the structure easier to understand.

[0026] The hose unit 16 is provided with a fastener half 24a at its downstream end. The hose units 16 except for the most upstream hose unit 18 are provided with a fastener half 24b at their upstream ends. A slider 24aa is provided on the downstream fastener half 24a. At a connection 26 between the hose units 16, the fastener half 24a at the downstream end of the upstream hose unit 16 and the fastener half 24b at the upstream end of the downstream hose unit 16 form a slide fastener 24. The fastener halves 24a, 24b are provided around the entire circumference of the hose unit 16, for example, with the joint 16a as the starting and ending ends.

[0027] As is well known, the fastener halves 24a, 24b of the slide fastener 24 each have a number of teeth aligned and engaged with each other by the slider 24aa. The slide fastener 24 may be a color (e.g., black) that is clearly different from the color of the other parts of the sheet body (e.g., yellow) so that the position of the connecting part 26 can be easily seen. By making the slide fastener 24 a color that is clearly different from the other base colors, it becomes easy to identify even if, for example, the inside of the mold form 14 is somewhat dark. In addition, it serves as a scale for the length of the concrete pouring hose 10, making it possible to check, for example, the approximate depth of insertion into the mold form 14.

[0028] The first hose unit 20 and the second hose unit 22 are connected uniformly and securely around the entire circumference by the slide fastener 24 of the connecting portion 26, and can be easily attached and detached by operating the slider 24aa. Needless to say, no tools or blades are required to attach and detach the hose units 16 to each other at the connecting portion 26.

[0029] A skirt portion 30 is provided at the downstream end of the hose unit 16. The skirt portion 30 is a tubular member made of the same material as the base material of the hose unit 16, and is fixed in contact with the inner circumferential surface of the hose unit 16, protruding downstream.

[0030] The fastener half 24a is provided on the outside of the skirt portion 30. That is, in the connecting portion 26, the skirt portion 30 at the lower end of the upstream hose unit 16 fits into the inner cavity of the upstream end of the downstream hose unit 16, and the slide fastener 24 as a whole is disposed on the outside of the skirt portion 30. The skirt portion 30 has a dirt-preventing effect so that concrete does not adhere to and solidify on the slide fastener 24 of the connecting portion 26.

[0031] The connections between the joints 16a, between the sheet body and the slide fastener 24, and between the skirt portion 30 are made by, for example, welding, adhesion, sewing, or the like.

[0032] The most upstream hose unit 18 is fixed to the piping outlet 12 by a band 33 (see FIG. 1). A stop ring 32 for preventing the hose unit 18 from falling out is provided at the upstream end of the most upstream hose unit 18 relative to the outlet of the piping outlet 12. The stop ring 32 is made of a hard material and is wrapped in a sheet base material. The inner diameter of the stop ring 32 is smaller than the outer diameter of the band 33. The stop ring 32 cannot move below the band 33, so that the casting hose 10 can be prevented from falling due to insufficient fastening, slippage, etc. However, depending on the conditions, the first hose unit 20 may be provided at the uppermost end of the casting hose 10 and fastened to the piping outlet 12 by the band 33 or the like. The lower end of the most upstream hose unit 18 has the same configuration as the first hose unit 20 and the second hose unit 22.

[0033] Of the second hose units 22, the one connected to the most downstream side may have the fastener half 24b and the skirt portion 30 omitted at the downstream end.

[0034] Next, a concrete pouring method using the concrete pouring hose 10 will be described. Fig. 3 is a diagram for explaining the concrete pouring method according to the embodiment, in which (a) is a diagram showing the initial stage, (b) is a diagram showing the first step, (c) is a diagram showing the second step, (d) is a diagram showing the third step, (e) is a diagram showing the fourth step, (f) is a diagram showing the fifth step, and (g) is a diagram showing the sixth step. The concrete pouring hose 10 is in a state in which a plurality of hose units 16 are connected at the connection parts 26 by slide fasteners 24.

[0035] First, the most upstream hose unit 18 is attached to the piping outlet 12 by a band 33 (see FIG. 1), and the concrete pouring hose 10 is inserted into the frame form 14.

[0036] As shown in Fig. 3(a), the lower end opening of the concrete pouring hose 10 is positioned inside the form 14 so that it is at or below a specified height H00 relative to the bottom surface 14a of the form 14. This specified height H00 is determined by certain standards and regulations, and is, for example, about 1.5 m. If the lower end opening is excessively high, there is a problem in that the cement and the stone may separate due to the impact of being dropped. Here, the height from the lower end opening of the concrete pouring hose 10 to the bottom surface 14a of the form 14 is set to the same as the specified height H00.

[0037] As shown in FIG. 3(b), concrete 34 is poured from the pouring hose 10. At this time, the pouring height H02 in one pour is limited to an appropriate amount. The pouring height H02 in one pour is determined by a predetermined standard or regulation, for example, 0.5 m per hour. This is because if the pouring height in one pour is excessively large, the pressure of the liquid concrete 34 increases and puts a strain on the structure of the formwork 14. When one pour is completed, the gap between the bottom end opening of the pouring hose 10 and the concrete 34 is defined as H01. In this example, H01=H00-H02=1.5-0.5=1.0 m. The concrete 34 poured in one pour is diagrammatically indicated by the symbol 34a.

[0038] When the amount of concrete poured at one time reaches H02, pouring is temporarily stopped. The height of concrete poured can be confirmed by a predetermined mark or the like. Then, the second hose unit 22, which is the most downstream of the pouring hose 10, is removed.

[0039] This removal work can be easily performed by simply operating the slider 24aa of the slide fastener 24, and of course no tools or blades are required, making it possible to realize easy concrete pouring work. In addition, each removed hose unit 16 does not need to be disposed of as waste after concrete pouring is completed, and can be reused, making it possible to reduce costs depending on the number of concrete pouring operations. This removal work may be performed by a worker standing on a scaffold inside the form 14, or it may be performed by once pulling out only the lower end of the concrete pouring hose 10 outside the form 14. At this time, since the slider 24aa (see FIG. 2) of the fastener unit 24a is located near the lower end opening of the concrete pouring hose 10, it may be pulled up by a rope wrapped around the ring part of the slider 24aa.

[0040] Since the second hose unit 22 is 0.5 m, at this point the height from the lower end opening of the pouring hose 10 to the top surface of the concrete 34 at that time is ensured to be the specified height H00, and the second pouring can be performed after a predetermined time has elapsed. When multiple pouring hoses 10 are applied to the formwork 14 (see FIG. 1), pouring with a different pouring hose 10 may be performed before the predetermined time has elapsed.

[0041] Then, a second pour is performed as shown in Figure 3(c). From the second pour onwards, the pouring height H02 is 0.5 m and the gap H01 is 1.0 m. At this point, the concrete 34 poured in the first pour (part 34a on the lower side of Figure 2(c)) has hardened appropriately, so pouring more concrete 34 on top of it will not place a large burden on the formwork 14.

[0042] As shown in Figures 3(c) to 3(f), thereafter, removal of the second hose unit 22 at the very bottom end and pouring are repeated. When all the second hose units 22 are removed as shown in Figure 3(f), the very bottom end of the pouring hose 10 becomes the first hose unit 20.

[0043] In this way, after removing all of the second hose units 22 according to the pouring height, the first hose unit 20 on the most downstream side is removed and multiple (three in this case) second hose units 22 are reattached as shown in Figure 3(g).

[0044] Then, the height from the lower end opening of the pouring hose 10 to the top surface of the concrete 34 at that time is ensured to be the specified height H00, and moreover, multiple second hose units 22 are connected to the downstream side of the pouring hose 10, which is essentially the same as the initial state shown in Fig. 3(a). Therefore, by repeating the same procedure thereafter, the length of the pouring hose 10 can be appropriately adjusted according to the poured height of the concrete.

[0045] That is, in the concrete pouring hose 10 and concrete pouring method according to this embodiment, when pouring begins via the pipe discharge outlet 12 and the concrete pouring hose 10, concrete 34 begins to accumulate inside the form 14, and the poured height gradually increases. Then, by sequentially removing the hose units 16 of the concrete pouring hose 10 from the downstream side according to the poured height inside the form 14, the overall length of the concrete pouring hose 10 can be easily adjusted.

[0046] Pouring concrete into the formwork 14 may be carried out over several days. In this case, pouring in one day may be, for example, until all of the second hose units 22 downstream of the pouring hose 10 are removed. That is, in the example of Fig. 3, (a) to (f) may be performed on the first day, and (g) and onwards may be performed on the second day.

[0047] As described above, the connecting portion 26 of the casting hose 10 is preferably made of the slide fastener 24, which allows for uniform and secure connection all around, but other fasteners such as hooks, buttons, snap-fit ​​plastic buckles, etc. may be used depending on the conditions. Note that a fastener is a device that prevents something from coming apart or moving, but in this application, it is more specific and excludes fixing means that require tools or equipment, such as screws, wedges, press-ins, fastening, fusion, and adhesion, and that are impossible to remove.

[0048] The present invention is not limited to the above-described embodiment, and can of course be freely modified without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0049] 10 Concrete pouring hose 12 Piping outlet 13 Valve 14 Frame type 16 Hose only 16a Joint 18 Uppermost hose alone 20 First hose alone 22 Second hose alone 24 Slide fastener 24a, 24b Zipper halves 24aa slider 26 Connecting part 30 Skirt Club 32 Locking ring 33 Bands

Claims

1. A concrete pouring hose in which a plurality of hose units are connected in series, The hose units are detachably connected to each other by fasteners, The hose unit is divided into a plurality of first hose units connected in series and a plurality of second hose units connected in series downstream of the plurality of first hose units, the second hose unit is shorter than the first hose unit, and the total length of the plurality of second hose units connected in series is less than the length of one of the first hose units.

2. A concrete pouring hose in which a plurality of hose units are connected in series, The hose units are detachably connected to each other by fasteners, Among the plurality of hose units, a most upstream hose unit provided on the most upstream side is provided at an upstream end with a ring for preventing slipping out, A pouring hose characterized in that the inner diameter of the anti-slip ring is smaller than the outer diameter of a band that fixes the upstream hose unit to the concrete discharge outlet.

3. The concrete pouring hose according to claim 1 or 2, characterized in that the hose itself has a cylindrical skirt portion at its downstream end, and the fastener is provided on the outside of the skirt portion.

4. The casting hose according to any one of claims 1 to 3, characterized in that the fastener is a slide fastener provided around the entire circumference.

5. A concrete pouring method using a concrete pouring hose in which a plurality of hose units are connected in series and detachably by fasteners, the hose units are divided into a plurality of first hose units connected in series and a plurality of second hose units connected in series downstream of the plurality of first hose units, the second hose unit is shorter than the first hose unit, and a total length of the plurality of second hose units connected in series is equal to or shorter than a length of one of the first hose units, A concrete pouring method comprising the steps of inserting the concrete pouring hose into a frame form, pouring concrete into the frame form from the concrete pouring hose, removing the hose units of the concrete pouring hose from the downstream side according to the poured height within the frame form, removing all of the second hose units, and then removing the first hose unit on the most downstream side and reattaching a plurality of the second hose units.

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