JPS6319316A - External damage-resistant rubber dam - Google Patents

Abstract

PURPOSE:To obtain a rubber dam not to be fallen down abruptly without easy discharge of air even when suffering external damage penetrating therethrough by providing an adhesive layer for the inside of the rubber film of a falling and rising rubber dam. CONSTITUTION:A rubber, a liquid rubber, a filler, and a cationic surfactant are mixed together, and the mixture is coated on the inner surface of the rubber film 2 to form an adhesive layer 6. The film 2 is fixed to the river bed 3 by anchor bolts 4 to construct a rubber dam 1. The quick falling-down of the rubber dam 1 can be prevented without easy discharge of air from inside even when suffering external damage penetrating therethrough.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to rubber weirs that are installed across rivers, etc., and that rise and fall due to the inclusion and discharge of gas. The present invention relates to a trauma-resistant rubber weir that at least does not collapse suddenly even if it is subjected to such trauma.

(Prior Art) As shown in FIG. 3, the rubber IQ 2 forming the rubber ring 1 has an outer sheath 2-1 made of a rubber elastic material having mosquito-resistant properties. A reinforcing layer 2-2 made of a canvas hat, and an inner surface 2-3 made of a rubber elastic body of a non-breathable hat are integrated, and this is folded in half to form a bag, which extends over the Imaichi of the river. River bed 3 to river 1 ↑
The rubber salt is fixed in the J direction by the anchor bolt 4, air is introduced into the inside of the rubber salt, the bag body is inflated to form a bottle 411, and in the event of a flood, the air inside the bag is discharged. But there are floating objects in the river, some of which have sharp edges, t = floating objects 5, or passing the rubber 1I22 of the rubber ring l through i'. Then release the air, which is the expansion medium of the rubber ring, and add 1 ft of rubber salt.
There were times when I was forced to lie down. Also, people sometimes stab the rubber ring l with a knife as a prank or the like. In order to prevent these damages and obtain a rubber film with high trauma resistance and cut resistance, a curled wire 1 is attached to the rubber film 2 as shown in Fig. 4.
-4, etc. were inserted to prevent damage from penetrating the rubber membrane 2 due to drifting objects 5, etc., but once the i-7 was damaged, air, which is an expansion medium, would be released. ．． Similar to those without the measures mentioned above, they sometimes caused lodging and caused unforeseen accidents downstream. In addition, the wire is prone to rust, and adhesion to rubber is problematic.Furthermore, due to the wire being mixed in, there are problems with the rise of rubber salts, lodging, and lack of roundness. This release! 1 solves these problems.

(Kibatsu 11A) This invention provides a rubber weir that is installed across a river and is made of a rubber ring that rises and falls when gas is enclosed and exhausted. This is a rubber ring characterized by being provided with an adhesive layer of a mixture of rubber, liquid rubber, tackifier (pine resin V), and a cationic surfactant.

(Example) 1 [2I] shows a rubber ring 1 of the present invention, in which an adhesive layer 6 is provided on the inner surface 2-3 of the lower part of the rubber ring 1 in a laid down state. The adhesive layer should be provided only on one side so that the upper and lower parts of the rubber ring l do not stick and prevent it from standing up.The adhesive layer 6 is a mixture of polymer, liquid rubber, and tackifier (pine resin, etc.). A mixture of Shitachi's C1 polymer rubber, liquid rubber, and cationic surfactant is also used. In order to provide the adhesive layer 6 on the inner rubber d1j 2-3 of the rubber ring 1, first, the inner rubber 2-3 is cleaned and then applied using a brush or the like. − Adhesive materials include the following:

Example l Rubber 30 Liquid rubber 70 Filler 70 Cationic surfactant variable Example 2 Polymer rubber Zo.

Low-molecular liquid rubber 20-100 Tatsuki Fire 50-100 In the one shown in Fig. 2, the adhesive layer 6 is made of a polyethylene film coated with a coating material 1, and has a thickness of 4-51%.
Since polyethylene does not stick to each other because of the adhesive tape, it can be provided on the entire inner surface of the inner rubber 2-3. Additionally, the back side of the polyethylene may be treated with silicone to prevent adhesion during lodging.

(Uninvented effect) Since Kizawa 1 has an adhesive layer on the inner surface of the rubber ring, even if it receives penetrating trauma, it will not easily release air, which is the expansion medium. This will prevent the rapid collapse of the Gono Weir and prevent large floods that could cause disaster downstream.

[Brief explanation of drawings]

1 [A and 2 are sectional views of the rubber ring of the present invention, 3
The figure is a sectional view of a conventional rubber ring, and FIG. 4 is a sectional view of a part of the rubber ring. l ・Rubber ring 2 , rubber membrane 2-1 ・Outer rubber 2-2 Reinforcement layer 2-3
Inner rubber 2-4 ・Kart wire 3 River bed 4 Anchor bolt 5, drifting object
6. Sticky wood Figure 1 Figure 2 Figure 3 Figure 2 "Zokuneyama 1E book (published by rEI) August 12, 1986

Claims (1)

[Claims] 1. A rubber weir installed across a river or the like that rises and falls by filling and discharging gas, characterized in that an adhesive layer is provided on the inside of a rubber membrane forming the rubber weir.