Protection cover of transport pipe and protection method

Abstract

To provide a protection cover of a transport pipe which can suppress the scattering of concrete when the transport pipe is burst while quickly finding the damage of the transport pipe.SOLUTION: A protection cover 1 for coating a transport pipe 10 of a concrete pump vehicle comprises an impregnation layer 2 wound around the transport pipe 10, and a transparent or semitransparent cover layer 4 for covering the impregnation layer 2. In the impregnation layer 2, the moisture of raw concrete which is absorbed from a side opposite to the cover layer 4 is impregnated up to the cover layer 4. It is preferable that the impregnation layer 2 is formed of a non-woven fabric.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a protective cover and a method for protecting a transport pipe of a concrete pump vehicle. [Background technology]

[0002] When fresh concrete is pumped from a concrete pump truck through a transport pipe and poured, if the transport pipe bursts, the fresh concrete may scatter around, so covering the transport pipe with a protective cover has been considered. For example, Patent Document 1 discloses a transport pipe cover that is made of a soft synthetic resin material and formed into a tube shape to be placed on the outer periphery of the transport pipe. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 54-109324 Summary of the Invention [Problem to be solved by the invention]

[0004] The transport pipe cover disclosed in the above Patent Document 1 is not only a single-layer cover that is prone to insufficient strength, but also is made of an opaque material, so any cracks or fissures that occur in the transport pipe cannot be visually detected, making it difficult to accurately grasp the signs of a rupture.

[0005] Therefore, an object of the present invention is to provide a protective cover and a protection method for a transport pipe that enables early detection of damage to the transport pipe while suppressing concrete scattering in the event of a transport pipe rupture. [Means for solving the problem]

[0006] The above-mentioned object of the present invention is achieved by a protective cover for covering a transport pipe of a concrete pump truck, which comprises a permeation layer wrapped around the transport pipe and a transparent or translucent cover layer covering the permeation layer, and the permeation layer is a protective cover for the transport pipe that allows moisture from fresh concrete absorbed from the opposite side to the cover layer to permeate into the cover layer.

[0007] In this protective cover for a transport pipe, the permeation layer is preferably made of a nonwoven fabric.

[0008] Furthermore, it is preferable to provide a fixing belt for fixing the permeation layer and the cover layer in a wound state around the transport pipe, and it is preferable that the cover layer has a thick reinforcing portion at a circumferential end thereof.

[0009] The above object of the present invention is also achieved by a method for protecting a transport pipe, which comprises covering a transport pipe of a concrete pump truck with the above-mentioned transport pipe protective cover. Effect of the Invention

[0010] According to the protective cover and protection method for a transport pipe of the present invention, damage to the transport pipe can be detected early, while concrete scattering can be suppressed in the event of a transport pipe rupture. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is a side view of a protective cover for a transport pipe according to one embodiment of the present invention. [Diagram 2] 2 is a cross-sectional view showing a state in which a protective cover for the transport pipe shown in FIG. 1 is wrapped around the transport pipe. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. Fig. 1 is a side view of a protective cover for a transport pipe (hereinafter simply referred to as a "protective cover") according to one embodiment of the present invention. Fig. 2 is a cross-sectional view showing the protective cover shown in Fig. 1 wrapped around a transport pipe of a concrete pump truck. As shown in Figs. 1 and 2, the protective cover 1 includes a permeation layer 2, a cover layer 4, and a fixing belt 6, and the permeation layer 2 and the cover layer 4 cover the transport pipe 10.

[0013] The permeation layer 2 is wrapped around the outer circumferential surface of the transport pipe 10, and absorbs moisture in the fresh concrete that leaks from the transport pipe 10, which is an iron pipe, from the surface opposite to the cover layer 4 described below, and allows the moisture to permeate throughout the thickness direction up to the cover layer 4. The permeation layer 2 can be formed, for example, from a sponge-like porous body that is excellent in impact resistance, cushioning properties, durability, and shape retention.

[0014] The permeation layer 2 of this embodiment is formed of a nonwoven fabric in which fibers are randomly oriented, and can impregnate the moisture of fresh concrete in the thickness direction and in the in-plane direction. The fibers that are the material of the nonwoven fabric may be inorganic fibers such as glass fibers and ceramic fibers, in addition to organic fibers such as polyester and acrylic fibers. The thickness of the permeation layer 2 is not particularly limited, but if it is too large, it is likely to be difficult to cover the transport pipe 10 and to permeate moisture, while if it is too small, the strength is likely to be insufficient, so the thickness of the permeation layer 2 is preferably about 5 to 15 mm. A preferred specific example of the permeation layer 2 is an air filter (type: PS / 300N) manufactured by Nippon Vilene Co., Ltd. It is preferable that the length of the permeation layer 2 in the winding direction is approximately equal to the circumferential length of the outer circumferential surface of the transport pipe 10.

[0015] The cover layer 4 is a layer made of a transparent synthetic resin, and is preferably excellent in flexibility, strength, and durability. The cover layer 4 can be formed, for example, from a transparent sheet made of polycarbonate resin and having a thickness of about 0.5 mm. At one end of the cover layer 4 in the winding direction, a fixing part 3 is formed to which one end of the permeation layer 2 in the winding direction is fixed by adhesion or the like. The cover layer 4 can be wrapped around the outside of the permeation layer 2 after the permeation layer 2 is wrapped around the transport pipe 10, and the protective cover 1 can be easily attached to the transport pipe 10. The protective cover 1 can also be attached to the transport pipe 10 after it has been installed on the concrete pump truck, but the installation work can be easily and efficiently performed by attaching the protective cover 1 to the transport pipe 10 before it is installed on the concrete pump truck, and then installing the transport pipe 10 with the protective cover 1 on the concrete pump truck.

[0016] The length of the cover layer 4 in the winding direction is set to be longer than the length of the permeation layer 2 in the winding direction so that an overlap occurs when the cover layer 4 is wound around the permeation layer 2. A reinforcing part 4a that is thicker than other parts of the cover layer 4 is formed at the other end of the cover layer 4 in the winding direction. The cover layer 4 may be transparent or semi-transparent as long as it allows the state in which the fresh concrete has impregnated the permeation layer 2 to be visible from the outside. A fixing part 4b made of a hook-and-loop fastener is provided near the center of the cover layer 4 in the winding direction.

[0017] The fixing belt 6 is a belt for fixing the permeation layer 2 and the cover layer 4 wound around the transport tube 10. One side of the fixing belt 6 is formed with a fixing surface 6a made of a hook-and-loop fastener. The fixing belt 6 can fix the permeation layer 2 and the cover layer 4 in a wound state around the transport tube 10 by fixing one end of the fixing belt 6 in the winding direction to the fixing portion 4b of the cover layer 4, winding the fixing belt 6 along the cover layer 4, and fixing the other end to the fixing portion 4b of the cover layer 4. The fixing of the permeation layer 2 and the cover layer 4 by the fixing belt 6 may be achieved by using a hook-and-loop fastener or other detachable fixing means such as a buckle or a snap button.

[0018] The protective cover 1 having the above configuration can be used to cover the transport pipe 10 with one or more layers, and thus the two-layer structure of the permeation layer 2 and the cover layer 4 can protect the transport pipe 10 with high strength, thereby preventing concrete from scattering and damage from spreading when the transport pipe bursts. In addition, the effect of maintaining the quality of ready-mix concrete at high temperatures in summer and low temperatures in winter can be expected.

[0019] If a crack or fissure occurs in the transport pipe 10 and the ready-mixed concrete leaks, the moisture in the ready-mixed concrete will permeate the permeation layer 2 and spread to the cover layer 4, making it easy to visually determine whether or not there is a leak. Therefore, since there is no need to remove the protective cover 1 when inspecting or maintaining the transport pipe 10, the work can be performed quickly and easily, and damage to the transport pipe 10 can be detected early.

[0020] In addition, by fixing the permeation layer 2 and the cover layer 4 in a wrapped state around the transport pipe 10 with the fixing belt 6, the protective cover 1 can be neatly attached to the transport pipe 10, so that it is possible to reduce air resistance during travel and operation of the concrete pump vehicle while maintaining a good appearance, and for example, to improve safety during work at height using a boom-type concrete pump vehicle. The cover layer 4 has a thick reinforcing portion 4a at the circumferential end along the wrapping direction, so that when the fixing belt 6 is tightened, the reinforcing portion 4a can securely press the permeation layer 2 and the cover layer 4 against the transport pipe 10.

[0021] The permeation layer 2 and the cover layer 4 can be reused by using highly durable materials, which can reduce the environmental load. [Explanation of symbols]

[0022] 1 Protective cover 2 Penetration layer 4 Cover Layer 6 Fixation belt 10 Transport pipe

Claims

1. A protective cover for covering a transport pipe of a concrete pump vehicle, A permeation layer is wound around a transport tube, and a transparent or semi-transparent cover layer covers the permeation layer, The permeation layer is a protective cover for a transport pipe through which moisture from the fresh concrete absorbed from the side opposite the cover layer permeates into the cover layer.

2. The protective cover for a transport pipe according to claim 1 , wherein the permeable layer is made of a nonwoven fabric.

3. The device further includes a fixing belt that fixes the permeation layer and the cover layer in a wrapped state around the transport pipe, The protective cover for a transportation pipe according to claim 1 , wherein the cover layer has a thick reinforcing portion at a circumferential end thereof.

4. A method for protecting a transport pipe, comprising covering a transport pipe of a concrete pump vehicle with the protective cover for a transport pipe according to any one of claims 1 to 3.

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