JPS5853306Y2 - Clamp device for bag weir - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a clamping device for a bag-like weir, which is used when attaching a bag-like weir installed in a river or the like to a river bed.

A bag weir made of flexible material that is installed across a river channel and allows the height of the weir crest to be adjusted is usually one that repeatedly collapses and rises by letting water or air in and out of the weir body. Therefore, high water tightness and airtightness are required.

Further, when the bag-like weir is erected, the pressure of water flowing in the river may generate such a severe tensile force on the bag-like weir that it is pushed away.

Therefore, the clamping device that holds the bag-like weir is required to have a strong holding force, and the overlapped end where the ends of the flexible sheets that make up the bag-like weir are overlapped is required to be highly watertight and airtight. is required to be tightened to hold it in place.

However, bag-shaped weirs held by conventional clamping devices have drawbacks such as poor water (air) tightness retention, and a decrease in the holding force at the overlapping portions of the bag-shaped weir. Ta.

In addition, with the clamping device that improves the water tightness and airtightness of the bag weir, it takes several days to attach the bag weir to the riverbed, and the overlapping ends of the bag weir are wrapped with a wrapping core. When tightening with clamp metal fittings, the ends of the bag-like weir may get caught, causing damage to the bag-like weir.

The present invention solves the above-mentioned drawbacks, and provides a clamping device for a bag-like weir that satisfies the above-mentioned demands, reliably provides watertightness and airtightness to the bag-like weir, and firmly holds the bag-like weir. The purpose is to

An embodiment of the present invention will be described below with reference to the drawings.

In Figure 1, a concrete floor 1 formed on a river bed, etc.
A security guard 2 having a flat surface is fixed to.

A plate-shaped clamp hardware 3 extending in the direction across the river is placed on the security 2, and an anchor bolt 4 serving as a fastening device between the security 2 and the clamp hardware 3 is attached to the clamp hardware 3.
The concrete floor 1 is screwed into a bolt hole 5 formed in the concrete floor 1 by passing through a hole 3a drilled in the concrete floor 1 and a hole 2a bored in the bedding 2.

The clamp hardware 3 is pressed in the direction of the security fixture 2 in proportion to the tightening force of the anchor bolt 4.

The upper part of the hole 3a of the clamp hardware 3 forms a housing part 6 for storing the bolt head 4a of the anchor bolt 4, and the bolt head 3a is sunk below the upper surface of the clamp hardware 3.

As a result, as shown in side 1 in the figure, the upper surface of the clamp hardware 3 is flush with the riverbed on the upstream side, and does not create resistance to the flowing water of the river.

The clamp hardware 3 has a recess 10 formed at the bottom and for forming a gap 9 for accommodating the overlapped end 8 of the bag-shaped weir 70 between the pad 2 and the clamp hardware 3, and an anchor bolt. 4 on the bag-like weir 7 side and a groove 11 formed in the recess 10 so as to cross the river channel, and a clamp hardware 3 on the opposite side of the anchor bolt 4 from the bag-like weir 7 side.
It is integrally formed with a protruding fulcrum 12 formed at the bottom.

The groove 11 has a side wall formed into a curved portion 13 having an arcuate cross section.
14, and the upper wall is a flat surface.

At a position corresponding to the groove 11 of the clamp hardware 3, a round bar body 15 extending almost at right angles to the anchor bolt 4 and in a direction across the river channel is inserted between the security fixture 2 and the groove 11 of the clamp hardware 3. It is intervening.

The cylindrical surface of the round bar body 15 and the arcuate surfaces of each of the curved portions 13 and 14 of the groove 11 are arranged so that the overlapping end 8 of the bag-shaped weir 7 touches the horizontal circumference of the cylindrical surface of the round bar body 15. The bag-shaped weir 7 is held in pressure contact with and irremovably held, thereby providing reliable and high water-tightness and airtightness to the bag-shaped weir 7.

Furthermore, the portions of the overlapping end portion 8 of the bag-like weir 7 other than the press-welded portions are lightly held down by the groove 11 of the clamp hardware 3 and the cylindrical surface of the round bar body 15.

The end portion 16 of the clamp hardware 3 on the side of the bag-like weir 7 is formed into a curved shape with an arcuate cross section in which the arcuate surface of the curved portion 14 of the groove 11 continues to the upper right end in the figure.

This end portion 16 allows the overlapping end portion 8 of the bag-shaped weir 7 to be pressed against the clamped surface to loosen this pressing force, and also to prevent downward acting force from acting on the end portion of the clamp hardware 3. This makes it possible to lightly press the overlapping end 8 of the bag-like weir 7 between the lower surface of the weir 16 and the upper surface of the deposit 2, and also prevents large bending stress from occurring in the bag-like weir 7 when it is erected. There is.

Next, a procedure for fixing the bag-like weir to a riverbed or the like using the clamp device according to the present invention will be explained.

First, each end of the flexible sheet constituting the bag-like weir 7 is overlapped, and the overlapping end 8 is placed on the security guard 2 with the rod-shaped body 15 positioned below the lower surface.

The clamp hardware 3 is placed on the overlapping end 8 of the bag-shaped weir 7 at a position where the groove 11 corresponds to the rod-shaped body 15, and the insertion hole 8a previously drilled in the overlapping end 8 and the hole 3a of the clamp hardware 3 are inserted. The axes of the bolt holes 5 are made to coincide with each other, and in this state, the axes of the bolt holes 5 are also made to coincide with each other.

Next, the anchor bolt 4 is passed through the hole 3a, the insertion hole 8a, and the insertion hole 2a drilled in the security structure 2, and the bolt hole 5 is inserted.
Using this principle, the bag-shaped weir 7 side of the clamp hardware 3 is pressed in the direction of the dam 2 using the protruding fulcrum 12 of the clamp hardware 3 as a fulcrum.

As a result, the overlapping end portion 8 of the bag-like weir 7 is pressed in a direction close to the vertical direction by the opposing gap between the cylindrical surface of the round bar body 15 and the curved portion 13, 14 of the groove 11 of the clamp hardware 3. Since it is facing towards the side, it is tightly pressed and clamped in such a way that it cannot be removed.

Therefore, the bag-like weir 7 is fixed by the clamping device of the present invention.
As shown in FIG. 2, it is firmly held in the river bed 17 with high water tightness and airtightness.

In FIG. 2, A indicates a river, and B indicates the direction in which water flows.

Note that the force of tightening the anchor bolt 4 to the clamp hardware is variable, so even a relatively small change in tightening force can greatly change the pressure force applied to the overlapped end 8 of the bag-like weir 7. Become.

In the above embodiment, the insertion hole 7L2a drilled in the security structure 2
And bolts 5 do not need to engage all anchor bolts 4.

In addition, the bag-shaped weir is not limited to the illustrated example, and the flexible sheet and the sealing sheet laid on the riverbed are overlapped at both ends, and the overlapping portion is firmly held by a single clamping device. It may be something that has been done.

As explained above, according to the clamp device of the present invention,
The overlapping ends of the bag-shaped weir are firmly pressed against the cylindrical surface of the round bar body and the curved parts formed at the open ends of the grooves formed at the bottom of the clamp hardware, thereby ensuring good water retention and It can be held tightly and airtight.

Moreover, when the overlapping ends of the bag-like weir are clamped and held by the device of the present invention, by adjusting the pressing force of the fastening device against the clamp hardware, a large pressure contact force can be obtained without damaging the bag-like weir. , it becomes possible to increase the holding power of the bag-like weir.

Furthermore, the clamping device according to the present invention is easier to assemble than conventional clamping devices, and has the advantage that it is also easier to attach the bag-like base to a riverbed or the like.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing an embodiment of the clamping device of the present invention, and FIG. 2 is a vertical cross-sectional view showing a state in which a bag-like base is installed on a river bed using the clamping device of FIG. 1. 1... Concrete floor, 2... Security deposit, 3... Clamp hardware, 4... Anchor bolt, 7... Bag-shaped base , 8...Overlapping end portion, 9...Gap portion, 10...Recessed portion,
11...Groove, 12...Protruding fulcrum, 13
．． 14... Curved portion, 15... Round bar body.

Claims (1)

[Scope of Claim for Utility Model Registration] A security guard fixed to a river bed, etc., a clamp hardware placed on the security guard, a bag-shaped weir body held between the security guard and the clamp hardware, and the above. In a bag-like weir consisting of bolts for fixing a security guard and the clamp hardware to a river bed, etc., the clamp hardware is provided so that its upper surface is flush with the riverbed, etc. on the upstream side, and A protruding fulcrum is provided on the lower surface of the side, and a groove is provided on the lower surface of the downstream side, which is composed of a side wall with an arcuate cross section and a flat earthen wall extending in the direction across the river channel, and is connected to the groove of the clamp hardware. A round bar body is arranged between the above-mentioned security deposit, and the gap between the surface of the round bar body and the side wall surface having an arcuate cross section is approximately the thickness of the bag-shaped weir body to be held, and the round bar body is held in the sandwiched state. 1. A clamping device for a bag-shaped weir, characterized in that the opposing gap formed between the surface of the dam and the side wall surface having an arcuate cross section is oriented in a nearly vertical direction.