JPS6124578Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a mooring device for a fishing net that is installed in front of a water intake in order to prevent dust from entering the intake. Conventionally, bar screens have been installed at the water intakes of rivers or reservoirs to prevent dirt and debris from entering the water intakes. However, a water intake generally opens wide toward a river or reservoir to facilitate the flow of water, and gradually narrows its width to reach the intake, and the bar screen usually becomes narrower at the back of the intake. Because the filter was located in such a location, there was a risk of dust concentrating and causing clogging. In addition, since dust mainly floats near the water surface and flows into the water intake, it is very effective to provide an additional screen field in front of the bar screen to prevent this. However, the water level of rivers or reservoirs fluctuates dramatically, and it is expected that a large load will be placed on the mooring ropes at the net yard due to the accumulation of dust. This invention allows the netting station to follow the water level and work effectively, and if a situation occurs where a large load is applied to the rope and the netting station sinks, a flood detection device will be activated and the rope will be cut. This relates to the mooring system at the net yard, which has a break detection device that activates in the event of such a situation. The outline is that a cylindrical support is installed on the side of the quay so that it penetrates the water surface and extends into the water, and this support is equipped with guide rollers on the upper and lower surfaces, and the inside is filled with closed-cell resin. The buoyancy body is attached so as to be able to slide up and down, and the net field is stretched in front of the water outlet using rope mooring fittings provided on the buoyancy body.A lead wire for break detection is attached to the rope, and a wire is attached to the top surface of the buoyancy body. is located on a net field mooring system equipped with a submergence detection device. The contents will be explained in detail below according to the embodiments shown in the drawings. FIG. 1 is a schematic plan view of a plurality of water intakes on which nets using the net mooring device according to the present invention are stretched. (Arrows in the figure indicate the direction of water flow.) As shown in the figure, in front of each of the water intakes 1 to 1, there are quay walls 2, 3, 3, 3' on both sides of each intake.
Support device 4 attached to 3′, 3″, 3″, 2′,
As shown in FIG . 2 , each of the net stations 5 to 5 has a net 7 attached to its lower edge with a link chain 6 which also serves as a weight. At its upper edge, a float 8 is attached at a proper position and is suspended by a rope 9.A conductive wire 9' for detecting rope breakage is attached to the rope 9 . As shown in FIGS. 3 and 4, the support device 4 includes a support rod 10 mounted on the upper surface of the quay so as to protrude above the water surface, and a support rod 10 that is installed on the upper surface of the quay so as to protrude above the water surface, and a support rod 10 protruding from the underwater part of the side surface of the quay so as to oppose this. and a support rod 11,
A cylindrical support 12 and a cylindrical support 1 are vertically supported through the water surface by these support rods 10 and 11.
2 and a buoyant body 13 that is loosely fitted into the buoyant body 13. As shown in FIGS. 5 and 6, the buoyant body 13 has four rotatable guide rollers on its upper and lower surfaces, respectively.
14 are provided symmetrically so as to be in contact with the outer peripheral side surface of the cylindrical support 12, and this guide roller 1
4, the buoyancy body 13 can smoothly and freely slide up and down along the outer periphery of the cylindrical support 12. The buoyant body 13 has a split structure that is divided along a vertical plane including its center line, and has an assembly flange 13' along the outer periphery of the dividing line. During assembly, the cylindrical support 12 is held between the left and right sides. A complete buoyant body 13 is constructed by facing each other so as to be oriented and then screwing them together at the assembly flange 13'. In addition, the buoyant body 13 has a closed cell resin 15 inside it.
This eliminates the need to form the outer shell plate of the buoyant body 13 watertight, and the outer shell plate can be formed sufficiently strong by intermittent welding, making it easy to construct and work. , economical efficiency can be improved. Furthermore, if a cover (not shown) is attached to the guide roller 14 to prevent dust from adhering to it and impairing its rotational function, the guide roller 14 will be sufficiently protected and its rotational function will be maintained. be able to. At the top of the buoyant body 13 , as shown in FIG.
Two flat plates 16, 16' are horizontally spaced apart from each other with a sufficient distance to accommodate the rope anchorage 17 . Projecting seats 18 are provided on both sides of the flat plates 16, 16'.
18' is provided, and a vertical shaft 19 (headed bolt in the illustrated example) of the rope mooring device 17 is inserted between the protruding seats 18, 18'. The end of the netting field rope 9 is locked to this vertical shaft 19. In other words, each of the net fields 5 to 5 adapts to changes in water level by means of buoyant bodies 13 that are fitted into cylindrical supports 12 provided on the quay so as to be able to slide up and down, at both ends of their upper edges, so that they can always maintain a constant position relative to the water surface. It is stretched in front of each of the water intakes 1 to 1 while maintaining the relative position. Further, a submergence detection device 23 (for example, electrodes arranged close to each other) is provided on the upper surface of the buoyant body 13 , so that when the buoyant body 13 is submerged in water, it becomes conductive and sounds a separately provided alarm. Further, as described above, the wire for detecting breakage 9' is attached to the rope 9 for netting, and it is connected to a device that detects breakage of the rope 9 and sounds an alarm. Dust inflow prevention screens 20 and 20' ( first
(see Figures 0 to 13) are provided over the length from the upper edge to the lower edge of the netting area so as to close the gap between the netting area and the quay. This screen 20 , 20'
If several intake channels are installed in parallel, as shown in the example in Figure 1, the upstream side locking part of the netting area of the most upstream water intake and the downstream side locking part of the netting area of the most downstream side intake. It shall be provided in the section. In this example, the screens 20 and 20' are rectangular frames 21 and 21' made of shaped steel.
Although a net constructed by expanding expanded metal 22, 22' is shown in Figure 2, it is possible to use a net made of a strong and corrosion-resistant material other than expanded metal. Needless to say. By providing the screens 20 , 20' , it is possible to effectively prevent dust from flowing into the water intake from both extreme ends of the water intake. According to the proposed structure, the screen is always placed at a predetermined height in front of the screen at the water intake with respect to the flowing water, so that dust near the water surface can be sufficiently prevented. It will not cause clogging. In addition, if too much trash accumulates in the fishing net, an excessive load is applied to the fishing net, and the floating body 13 sinks and becomes flooded, or if the net fishing rope 9 breaks, the detection device works and can detect it immediately. Appropriate measures can be taken.

[Brief explanation of the drawing]

Figure 1 is a schematic plan view of the water intake section with a net anchorage installed using the net anchorage device according to the present invention, Figure 2 is a front view of the net anchorage, and Figure 3 is a side view of the net anchorage device. 4
The figure is a front view of FIG. 3, FIG. 5 is a plan view of the buoyant body 13 , FIG. 6 is a front view of FIG. 5, FIG. 7 is a view from A to A in FIG. Rollo view of Figure 6, No. 9
Figure a is a plan view of the mooring rope locking part for the net field, Figure 9 b is a side view of Figure 9 a, Figure 10 is a plan view showing the attached state of the screen 20 provided in part A of Figure 1,
Figure 11 shows the screen 20' installed in section B in Figure 1.
12 is a plan view showing the attached state, FIG. 12 is a perspective view from the top of FIG. 10, and FIG. 13 is a knee view from FIG. 11. 1, 1', 1'', 1... Water intake, 2, 2',
3, 3', 3''...Wharf, 4 ...Support device, 5 ,
5' , 5'' , 5 ...Amiba, 9...Amiba mooring rope, 9'...Breakage detection conductor, 10, 11...Support rod, 12...Cylindrical strut, 13 ...Floating body , 1
4... Guide roller, 15... Closed cell resin,
16, 16'...Flat plate, 17 ...Rope mooring device, 18, 18'...Protruding seat, 19...Vertical shaft,
20 , 20' ...Screen, 23 ...Flood detection device.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A cylindrical column that penetrates the water surface from a quay is supported, and a buoyant body with the column passing through the center and having guide rollers on the upper and lower surfaces is slidable up and down. The buoyant body is divided along a vertical plane including the center line, an assembly flange is provided along the outer periphery of the dividing line, the buoyant body is filled with closed cell resin, and a rope mooring fitting is attached to the top of the buoyant body. A net mooring device for securing a net mooring rope. 2. The net field mooring device according to claim 1 of the utility model registration claim, which is provided with a submergence detection device on the upper surface of the buoyant body. 3. The net mooring device according to claim 1 or 2 of the utility model registration claim, wherein a break detection conductor is attached to the net mooring rope to detect breakage of the mooring rope. 4. The rope mooring fittings shall have a vertical shaft inserted through one corner of two flat plates installed horizontally at a predetermined interval above the buoyant body, and the net field mooring rope shall be secured to the vertical shafts. A net field mooring device according to claim 1 of the utility model registration claim.