JPS59145811A - Water-sealing device for gate - Google Patents

Abstract

PURPOSE:To prevent damage by high-pressure water stream to a water-sealing rubber by a method in which the water-sealing rubber to be set in such a way as to surround the end portion of the outlet of an effluent pipe is made of a fiber-reinforced type rubber incorporated with a reinforcing fiber. CONSTITUTION:A reinforcing fiber 12, e.g., nylon cords, etc., is buried in plural layers at right angle to the longitudinal direction of a double caisson rubber 11 in the rubber on the door side of the double caisson rubber 11 set in such a way as to surround the end portion of the outlet of the effluent pipe of a dam body. The projection of the double caisson rubber when the outlet of the effluent pipe is opened by half can thus be suppressed and thereby damage by high- pressure effluent water to the surface of the rubber and cracking in the expanded basal portion of the double caisson rubber can be prevented.

Description

[Detailed description of the invention] The present invention relates to a gate water stop device.

Figures 1 to 3 show the conventional water stop device at the main gate of the main discharge equipment, and Figure 1 is an overall view of the main discharge equipment.
1) is the dam body, (21 is the discharge pipe installed in the dam body (1), (3) is the skin plate of the gate, (4) is the coaster gate, and (5) is the water flow.

FIGS. 2 and 6 are enlarged views of part α in FIG. 1, where FIG. 2 shows the state when the gate is fully closed, and FIG. 3 shows the state when the gate is partially closed.
A frame-shaped rubber pedestal (6) is installed in the dam body (1) with a filling material (force) surrounding the outer periphery of the outlet of the discharge pipe (2), and the rubber pedestal (6) K, inside A cut (8α) is provided in the longitudinal direction, and a convex portion C3h) (8b') is provided on both left and right sides.
), and a rubber tube (9
) is attached via the holding plate section.

In the fully closed state of the gate shown in Fig. 2, the tube (
9) High-pressure water flowing through the discharge pipe (2) is introduced into the interior, and the internal pressure causes the outer convex portion (8) of the double caisson rubber (8) to
b) is expanded and the skin plate (3) of the gate is crimped around the entire circumference to completely stop water.

However, when the gate is half-open, the skin plate (3) of the gate rises as shown in Figure 6, so the bottom side of the double caisson rubber (8) arranged like a picture frame is released from the crimped state and becomes convex. The portion (8h) is in a protruding state, and therefore the double caisson rubber (8) in this portion is damaged by the high pressure water stream (5), causing a shortening of its lifespan.

The present invention has been proposed in order to eliminate such drawbacks, and the water-stop rubber disposed surrounding the outlet end of the discharge pipe is composed of reinforced fiber type rubber with built-in reinforcing fibers. This patent relates to a water stop device characterized by:

According to the present invention, as described above, the water stop rubber disposed surrounding the outlet end of the discharge pipe is made of reinforced fiber dust rubber with reinforcing fibers built in, so that the water stop rubber is made of reinforced fiber dust rubber with built-in reinforcing fibers. The rigidity of the water stem is increased, the excessive protrusion of the water stop rubber is suppressed during semi-open flow, the water stop rubber is prevented from being damaged by high pressure water flow, it can be used even with high water heads, and fatigue strength characteristics are improved. Durability is improved.

The present invention will be described below with reference to the illustrated embodiments.

In the embodiment shown in FIGS. 5 and 6, a nylon cord, for example, is inserted into the rubber on the door body side of the double caisson rubber (11) K provided in the dam body surrounding the outlet end of the discharge pipe. Several layers of reinforcing fibers α2 are embedded perpendicularly to the longitudinal direction of the double caisson rubber.

7 and 8 show another embodiment of the present invention, in which a double caisson thread (11
) is buried inside the rubber on the door body side. In other words, the reinforcing fibers built into the first layer and the reinforcing fibers built into the second layer are crossed, and the reinforcing fibers built into the second layer are incorporated into the double caisson rubber aυ so as to repeat several layers. For example,
The reinforcing fibers that are vertically adjacent to each other intersect at an intersection angle θ of 52°.

The double caisson rubber (11) shown in the figure has increased rigidity due to the reinforcing fibers α2 embedded inside, so it suppresses protrusion when the outlet of the discharge pipe is half-open, and prevents damage to the rubber surface caused by high-pressure discharged water, as well as double caisson rubber. This prevents the occurrence of cracks at the base of the bulge, and also enables use in high-pressure water heads, increasing fatigue properties.

Although the present invention has been described above with reference to embodiments, the present invention is, of course, not limited to these embodiments, and can be modified in various ways without departing from the spirit of the invention. be.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view showing the entire main discharge equipment, and Figures 2 and 6 are cross-sectional views showing the gate water stop part when the gate is fully closed and half-open, respectively, and are enlarged views of the α part of Figure 1. be. Fourth
The figure is a front view of a double caisson rubber, FIG. 5 is a front view showing an embodiment of a double caisson rubber used in a gate water stop device according to the present invention, and FIG. 6 is a view taken along arrows VI-VI in FIG.
FIG. 7 is a front view showing another embodiment of the double caisson rubber, and FIG. 8 is a view taken along the line C--X in FIG. 7. aD...Double caisson rubber, Q3...Reinforcing fiber O Sub-agent Patent attorney Shige Fumi Okamoto 2 other authors 1 Akane Figure 4

Claims (1)

[Claims] A gate water stop device characterized in that the water stop rubber disposed surrounding the outlet end of the discharge pipe is made of reinforced fiber type rubber with built-in reinforcing fibers.