TW201827673A - Rubber-made inflation dam body and manufacturing method thereof wherein the dam body is suitable for a dam height exceeding 1.5 meters, and has fins capable of preventing vibration and preventing damage during deflation - Google Patents

Abstract

Provided is a rubber-made inflation dam body having a sufficient bonding strength suitable for a dam height exceeding 1.5 meters, which has fins capable of preventing vibration and preventing damage during deflation. There are a plurality of rubber sheet laminates, each rubber sheet laminate being formed by laminating rubber sheets shifted from each other by a predetermined amount along the axial direction. The end portion in the axial direction is provided with an axial stepwise portion formed by the rubber sheets. The bonding portions of the adjacent rubber sheet laminates are bonded in a manner of pressing the protruding surfaces of the rubber sheets of one rubber sheet laminate and the protruding surfaces of the rubber sheets of another rubber sheet laminate, while the rubber sheets of the outermost layer are aligned with each other. Then, the bonding portions are vulcanized and bonded together, and the fins arranged along the axial direction of the rubber sheet laminate are vulcanized and bonded to a fin bonding portion of the rubber sheet laminate that is in an original non-vulcanized state.

Description

Rubber inflatable dam body and manufacturing method thereof

The invention relates to a rubber inflatable dam body for a rubber inflatable dam and a manufacturing method thereof, in particular to a dam height of more than 1.5 meters.

In the past, in order to block the flow of small and medium-sized rivers or to ensure the water level of agricultural waterways, rubber dams have been widely used to block the flow of rivers or waterways, and various improvements have been made.

However, the width of the woven fabric used in the rubber sheet laminate for constructing the rubber dam is about 1.5 meters. Therefore, when the longitudinal direction of the woven fabric is arranged in the axial direction, the rubber dam can be constructed by a single piece of woven fabric. The height of the pressure is about 0.5 meters. In addition, the standard width of the pressurized heating plate for vulcanization is 3.0 meters, and the maximum height of the rubber dam constructed without the joint after vulcanization is about 1.5 meters. Therefore, if the height of the rubber dam is required to be 1.5 m or more, it is necessary to use a joining material to join a plurality of vulcanized rubber sheet laminates as a rubber inflatable dam body. The technique of joining a plurality of rubber sheet laminates using a bonding material is described in Patent Document 1 (Japanese Patent No. 3302430), and the technique of bonding in the circumferential direction is described in Patent Document 2 (Japanese Patent Laid-Open Publication) There are two types of techniques, such as joining in the axial direction (the width direction of the river), as shown in S58-17910.

Referring to FIGS. 5 and 6, in Patent Document 1, the rubber sheet laminate is joined in the circumferential direction. For example, as shown in FIG. 5(a), the joint portion j is provided between the rubber sheet laminates g arranged in the circumferential direction, and A fin t is provided at the front end of the folded portion. When it is deflated (or collapsed), it is flat as shown in Fig. 5(b) (the fin in the figure is denoted by f). Further, as shown in Fig. 5(c), the connecting portion j is a rubber sheet laminate g connected to the left and right by a reinforcing material r as shown in the figure. Further, Patent Document 1 is a rubber dam main body that is integrally joined by at least two main body divided portions that are arranged independently in the circumferential direction.

In the structure of the rubber sheet laminate in the axial direction, for example, as shown in FIG. 6, the joint portion j is provided between the rubber sheets g adjacent in the axial direction and joined thereto. Further, Patent Document 2 is a portion in which at least two flexible film dam portions are separated along the longitudinal direction (axial direction) of the flexible film dam, and joined together by a subsequent bonding method. Moreover, in the example shown in FIG. 6, there is no fin, and the folded-back part h is an arc shape, and a water flow is obstructed.

However, in Patent Document 1, the structure in which the rubber sheet laminate is joined in the circumferential direction is post-joined by re-vulcanizing the vulcanized rubber, so that the strength of the post-joined portion is less than that of the main portion. Further, since the tension acting in the circumferential direction at the time of expansion is stronger than the axial direction, and there is a possibility that the joint portion is broken, it has been reported that the joint portion in the circumferential direction is broken.

Further, in Patent Document 2, the structure of the rubber sheet laminate is joined in the axial direction, and since the rubber after the vulcanization treatment is re-vulcanized and post-joined, the force acting in the axial direction even when expanding is applied to the circumference. The force in the direction is weak, but as considered in Patent Document 2, the strength of the post-joined portion is less than that of the main body portion, and the joint portion is broken.

Further, in Patent Document 1 or Patent Document 2, the bonding of the vulcanized element is performed, and the strength of the joint portion is lowered because the following joining method is carried out. The bonding method shown in Patent Document 2 will be described below as an example. Next, as shown in FIG. 7(a), the joint portion is formed by bonding the notch portion c of each rubber sheet g and the reinforcing member r to each other as an adhesive, or as shown in FIG. 7(b) to contain a special carbon material. The unheated rubber sheet u, which is a planar heat generating element, is substituted for the adhesive, and the notch portion c of each rubber sheet g is vulcanized integrally with the reinforcing member r, or as shown in Figs. 7(c) and (d). The outer surface of the joint edge portion of each rubber sheet g is cut into a plurality of steps d, and the reinforcing material r is formed in a shape corresponding to a step, and each reinforcing layer of each rubber sheet g is embedded in the reinforcing material r The reinforcing layer corresponding to the same depth and depth is post-vulcanized.

In any of the following methods shown in FIGS. 7(a) to 7(d), the opposing rubber sheets g are not vulcanized integrally but are indirectly joined by the reinforcing member r, so that the joint strength is affected by the reinforcing members r and each. The subsequent strength of the rubber sheet g is affected, and the adhesion after the vulcanization is followed by the weak adhesion of the rubber sheet g and the reinforcing member r, and it is difficult to ensure sufficient joint strength as compared with the bonding between the unvulcanized rubber.

Further, another rubber-filled dam body disclosed in Patent Document 2 has an axial joint portion formed by the vulcanized rubber as shown in Figs. 7(a) to (d) above, and fins. However, in particular, the strength of the fin joint portion is difficult to ensure, so the rubber dam of this type has not been implemented.

The present invention has been made in view of such circumstances, and an object thereof is to provide a rubber inflatable dam body having a sufficient joint strength suitable for a rubber dam having a dam height of more than 1.5 meters, and having fins, which can effectively prevent vibration and prevent Damage when deflated (or collapsed).

In order to achieve the above object, the rubber dam body of the present invention has a plurality of rubber sheet laminates and fins, each of the rubber sheet laminates having a joint portion in the axial direction, and the fins are disposed along the axial direction. In the rubber sheet laminate, each of the rubber sheet laminates is formed by laminating a plurality of rubber sheets of the same shape from each other in the axial direction by a predetermined amount, and the end portions in the axial direction have each other along the axial direction. An axial stepped portion formed by the predetermined amount of the rubber sheets is formed between the joint portions of the two rubber sheet laminates adjacent in the axial direction by the axial stepped portions and along the axial direction The convex surface of the rubber sheet deviated from the predetermined amount is pressed against the convex surface of the other rubber sheet, and the rubber sheet of the outermost layer is disposed to be flush, and the rubber sheet laminate is in the unvulcanized state. The joint portions are co-vulcanized and joined, and the fins provided on the rubber sheet laminate in the axial direction are co-vulcanized and joined to the fin joint portions of the rubber sheet laminate in an unvulcanized state.

Moreover, a method of manufacturing a rubber inflatable dam body according to the present invention comprises: (preparation step) a step of preparing a plurality of rubber sheet laminates, wherein the plurality of rubber sheet laminates prepared in the step are respectively made of the same shape rubber sheet Deviating from each other by a predetermined amount along the axial direction and laminating, and having the axial direction portions of the rubber sheets in the axial direction deviated from each other by a predetermined amount in the axial direction, and the rubber sheets are laminated The body is in an unvulcanized state, and (the plate-like body forming step) is disposed between the two rubber sheet laminates adjacent in the axial direction, and the respective axial stepped portions constituting each other are offset from each other by a predetermined amount in the axial direction. The surface of the rubber sheet is pressed against the surface of the other rubber sheet, and the rubber sheet of the outermost layer is disposed to be flush, and a portion corresponding to the fin portion in the axial direction is left, and the rubber is integrally vulcanized and joined. a step of forming the laminated body into a plate-like body; (fin sheet forming step), the portion corresponding to the fin portion along the axial direction as the folded portion is folded in the circumferential direction with respect to the plate-like body, and Corresponding to the fin a portion of the sheet portion forming a step of the unvulcanized fin along the axial direction; and (a vulcanization step) a step of vulcanizing the fin portion of the aforementioned folded plate-like body on which the unvulcanized fin is formed.

The effect of the present invention is that, according to the present invention, a plurality of unvulcanized rubber sheet laminates adjacent in the axial direction are protruded from the axial step portion constituting the joint portion so as not to use a reinforcing material or an adhesive. The vulcanization molding is integrated in a manner, and therefore, a stable joint strength can be obtained. In addition, since the rubber sheet of the outermost layer is joined in a state of being flush and unvulcanized, the surface is excellent in appearance without unevenness, and peeling of the joint portion due to unevenness can be prevented.

Further, since the fins are vulcanized and joined to the rubber sheet laminate in an unvulcanized state, the joint strength is high and the durability is also good.

Further, according to the present invention, the risk of occurrence of damage at the joint portion is low, and the shock-proof effect is obtained, and it becomes a rubber-filled air which can prevent damage caused by drifting due to the rubber protruding from the downstream when the air is leaked (or collapsed). dam.

An example of the rubber dam body of the present invention will be described below with reference to Figs. 1 to 3 . As shown in FIG. 1, the rubber inflatable dam body of the present invention has a plurality of rubber sheet laminates 2, and fins 3 disposed along the axial direction of the rubber sheet laminates 2, and each of the rubber sheet laminates 2 It has the joint portion 1 in the axial direction.

As shown in FIG. 2, each of the rubber sheet laminates 2 is formed by sequentially displacing a rubber sheet 21, 22, 23, 24, 25 of the same shape in the axial direction X by a predetermined amount, and is laminated in the axial direction X. One or both ends have an axial stepped portion 4 formed by the rubber sheets being offset from each other by a predetermined amount in the axial direction X. Further, the end portion that is not joined to the other rubber sheet laminate 2 may not have the axial step portion 4 at the attachment to the normal plane, for example. Further, when the two rubber sheet laminates 2 are joined, the joint portions 1 of the rubber sheet laminates 2 adjacent in the axial direction X are formed as the respective axial step portions 4 as shown in Fig. 3(b). The protruding faces 211, 221, 231, 241, and 251 of the rubber sheets 21, 22, 23, 24, 25 which are offset along the axial direction X are pressed against each other, so that the rubber sheet 21 of the outermost layer is disposed flush.

As shown in Fig. 1, the rubber sheet laminate 2 is joined in the axial direction X. As shown in Figs. 2 and 3(a) and (b), the left and right rubber sheet laminates 2 are axially stepped. The protruding faces 211, 221, 231, 241, and 251 of 4 are integrally vulcanized and joined from the unvulcanized state. That is, since the left and right rubber sheet laminates 2 are not joined after vulcanization, the joint strength is high, and even a large inflatable dam having a dam height of more than 1.5 meters has sufficient joint strength and is suitable for expansion. Extreme bending that occurs near the law with wrinkles also has durability.

Further, since the fins 3 as shown in Fig. 1 are also provided, it is possible to prevent the occurrence of vibration caused by overflow during expansion, and it does not become a folded portion h having an arc as shown in Fig. 6. It can prevent drifting of the drifting material due to the protruding rubber at the downstream when it is deflated (or collapsed).

Next, an embodiment of a method of manufacturing a rubber inflatable dam body according to the present invention will be described with reference to Figs. 2 to 4 . First, as shown in FIG. 2, a plurality of unstruded rubber sheet laminates 2 are prepared, and the unvulcanized rubber sheet laminates 2 are unvulcanized and shaped rubber sheets 21, 22, 23, 24, 25 is sequentially stepped from the axial direction X by a predetermined amount, that is, at one or both ends of the axial direction X, the rubber sheets 21, 22, 23, 24, 25 are offset from each other along the axial direction X. The axial stepped portion 4 is formed in an amount. The rubber sheet 21 is the outermost outer rubber, and the rubber sheet 25 is the innermost inner rubber. The rubber sheets 22, 23, and 24 are rubber sheets made of a canvas 5 as a reinforcing material. In the illustration, the rubber sheet laminate 2 is formed of five rubber sheets, but the number or material of the rubber sheets can be arbitrarily selected.

Next, with respect to the two rubber sheet laminates 2 adjacent in the axial direction X, the protruding faces of the rubber sheets 21, 22, 23, 24, 25 which are offset from each other in the axial direction X of the one axial stepped portion 4 are formed. 211, 221, 231, 241, 251, and protruding faces 211, 221, 231, 241, 251 of the rubber sheets 21, 22, 23, 24, 25 constituting the other axial stepped portion 4, as shown in Fig. 3 (b) ) shown generally overlapped and pressed, vulcanized and joined using a large hot plate press in an unvulcanized state to form a sheet-like body 6 as shown in Fig. 3 (a), and between the outermost rubber sheets 21 Is configured to be flush. In the axial center portion in the circumferential direction Y in Fig. 3(a), a part of the fin portion is maintained in an unvulcanized state in order to be joined to the fin 3 of Fig. 4(a). Further, in order to maintain the portion corresponding to the fin portion in an unvulcanized state, for example, when vulcanization bonding is performed using the above-described large hot plate press, the heating temperature of the portion corresponding to the fin portion is adjusted so that the fin is attached The portion of the sheet is still in an unvulcanized state.

Next, a V-shaped groove 7 is formed in the axial direction X of the innermost rubber sheet 25 so as to facilitate folding the plate-like body 6 along the axial direction X and a portion corresponding to the fin portion as a folded portion, and folded in the circumferential direction Y. The bag body is formed to prevent air from staying inside the bag body foldback portion. Next, when the plate-like body 6 and the fin portion are vulcanized, a mold release resin (mylar) 8 is disposed to prevent the rubber sheets 25 of the uppermost inner and lower layers facing each other from joining.

Next, as shown in FIG. 4(b), the unvulcanized fins 3 are formed along the axial direction X of the folded plate-like body 6 in a portion which is not vulcanized and corresponds to the fin portion. When the rubber inflatable dam body of the present invention is expanded, as shown in FIG. 1, the axial direction X is opposed to the overflow in the axial direction X, and the fin 3 is partially downstream when it is formed to be deflated (or collapsed). At the front end, the rubber-filled dam body is deflated (or collapsed) into a flat state.

Then, the unvulcanized portion of the folded sheet-like body 6 and the fins 3 are vulcanized and joined by a hot plate press to form a flush integral.

In summary, the rubber inflatable dam body of the present invention and the method of manufacturing the same can indeed achieve the object of the present invention.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

1‧‧‧ joints

2‧‧‧Rubber sheet laminate

21‧‧‧ rubber sheet

211‧‧‧ protruding surface

22‧‧‧Rubber sheet with reinforcing layer

221‧‧‧Face

23‧‧‧Rubber sheet with reinforcing layer

231‧‧‧Outstanding face

24‧‧‧Reinforced rubber sheet

3‧‧‧Fins

4‧‧‧Axial stepped section

5‧‧‧ canvas

6‧‧‧ plate body

7‧‧‧V-groove

8‧‧‧Removing resin (mylar)

X‧‧‧axis direction

Y‧‧‧ week direction

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a perspective view of a rubber inflatable dam using the rubber inflatable dam body of the present invention; FIG. 2 illustrates the manufacture of the present invention. FIG. 3 is an explanatory view showing a method of manufacturing a rubber-filled dam body of the present invention, and (a) is shown on the shaft, in the case of a rubber-filled dam body; (b) is a plan view showing a state in which the rubber sheet laminate is connected in the direction, (b) is an enlarged front view of the portion A in (a); and FIG. 4 is an explanatory view showing a method of manufacturing the rubber-filled air dam body of the present invention, showing a rubber sheet folded in half An explanatory view of a method of forming fins in the axial direction of the laminate; FIG. 5 is an explanatory view showing a conventional rubber-filled dam body joined in the circumferential direction, (a) is a perspective view, and (b) is showing a deflation (or (c) is an enlarged view of a portion B in (b); FIG. 6 is a perspective view showing a conventional rubber-filled dam body joined in the axial direction; and FIG. 7 shows that after vulcanization After the bonding, the rubber sheet is joined An explanatory diagram of a joint example of a laminate.

Claims (2)

A rubber inflatable dam body comprising: a plurality of rubber sheet laminates and fins, each of the rubber sheet laminates having a joint portion in an axial direction, the fins being disposed on the rubber sheet layers along an axial direction Each of the rubber sheet laminates is formed by laminating a plurality of rubber sheets of the same shape offset from each other by a predetermined amount in the axial direction, and the end portions in the axial direction have such deviations from each other by a predetermined amount along the axial direction. The axial stepped portion formed by the rubber sheet is formed by forming the axial stepped portion between the joint portions of the two rubber sheet laminates adjacent in the axial direction and deviating from each other by a predetermined amount along the axial direction. The convex surface of the rubber sheet is pressed against the convex surface of the other rubber sheet, and the outermost rubber sheet is disposed to be flush, and the rubber sheet laminated body is co-vulcanized by bonding the joint portion in an unvulcanized state. The fins provided on the rubber sheet laminate in the axial direction are co-vulcanized and joined to the fin joint portions of the rubber sheet laminate in an unvulcanized state. A manufacturing method of a rubber inflatable dam body, comprising: (preparation step) a step of preparing a plurality of rubber sheet laminates, wherein the plurality of rubber sheet laminates prepared in the step are respectively made of the same shape rubber sheets along the axial direction of each other Deviating from the predetermined amount and laminating, and having the axial direction portions of the rubber sheets offset from each other by a predetermined amount in the axial direction, and the rubber sheet laminates are in an unvulcanized state. (plate-like body forming step) between the two rubber sheet laminates adjacent in the axial direction, the respective axial step portions constituting each of the axial step portions are offset from each other by a predetermined amount in the axial direction And pressing the surface of the other rubber sheet, and arranging the rubber sheet of the outermost layer to be flush, and leaving a portion corresponding to the fin portion in the axial direction, integrally vulcanizing and joining the rubber sheet laminated body into one Step of the plate-shaped body; (fin sheet forming step), the portion corresponding to the fin portion along the axial direction as the folded portion is folded in the circumferential direction, and corresponds to the fin portion in the foregoing part a step of forming unvulcanized fins along the axial direction; and (vulcanization step) a step of vulcanizing the fin portions of the aforementioned folded plate-like body on which the unvulcanized fins are formed.