JPS5914499Y2 - Corner removal device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a corner cutting device applied to a water gate between piers at the top of a water storage dam.

Piers are constructed at regular intervals at the top of the water storage dam, and a spillway, or water gate, is formed between each pier, and a frest gate is installed to adjust the water level by opening and closing the water gates.

This frest gate is inspected regularly, and damaged parts are repaired and anti-rust paint is repainted, but if possible, it is recommended that the water level in the dam not be lowered and that no underwater work be carried out. .

Therefore, when inspecting and repairing a frest gate, the method used is to dam the upstream face using a steel corner drop and keep the frest gate on the downstream side dry. In most cases, the reality is that no consideration is given to installing a corner drop at the front end of the pier in the future.

In other words, whether existing dams or newly constructed dams do not have a special cut-off door groove on the side of the pier, or even if a door groove is provided, the dam cannot withstand use based on water pressure. There are many cases.

The present invention is based on the above-mentioned actual situation, and it is possible to easily and reliably install the corner droplet without providing a door groove for the corner droplet on the pier side or without making any work on the dam side. The present invention provides a device capable of closing a water gate, and an embodiment thereof will be described below based on the drawings.

That is, A is a frest gate that opens and closes the water gate B formed at the top of the dam.In many cases, a tenter gate is adopted for this, and the frest gate A is rolled up on the pier C where the water gate B is formed. A device (not shown) and a bridge are installed, and a crane (not shown) for suspending and operating the corner drop, which will be described later, is installed using this bridge.

By the way, 1 is a plurality of corner drop bodies that close the water gate at the front end of Pier C, and these have a related structure in which they are connected to each other in a state where the water gate is closed to make it watertight. At this time, a complete water stop is achieved between the inner wall surface of the pier C located at both ends, and the lower end of the full-width drop main body 1 and the front end surface of the dam crest.

In addition, each top end of the corner cutter main body 1 is provided with a hanging piece 2 that projects rearward.

3 is a support beam installed between the upper inner walls of Pier C;
Its both ends are firmly supported by anchor hardware 4.

By the way, the support beam 3 is for holding the corner drop main body 1 in a substantially vertically suspended state, and therefore the hydraulic load is supported by the support beam 3 and the front end surface of the dam crest.

In addition, when installing or removing each shank main body 1, guide rollers 5 and 6 are installed on the corner drop main body 1 and the hanging piece 2, respectively, so that they can be easily moved along the support beam 3. It is set up.

Fig. 3 is a cross-sectional view showing the mutual relationship of the arranged corner dropping bodies 1 and the relationship with the dam, and each corner dropping body 1 is connected and fixed to a vertically long box-shaped main body 7 and its rear part. It is composed of a wide flat plate body 8, and one side of the flat plate body 8 is bent forward to form a curved protrusion 9, and a water stop rubber 10 is vertically provided on the rear surface of the curved protrusion 9, which is adjacent to the curved protrusion 9. It is pressed against the flat plate body 8 of the corner cutter main body 1 to achieve watertightness therebetween.

Note that the corner cutter main body 1 at the left end in the drawing has a flat plate shape without forming a curved protrusion, and an L-shaped water stop rubber 11 that presses against the pier C is vertically installed here.

Further, on the opposite side, that is, on the outside of the flat plate body 8 of the corner cutter body 1 located at the right end in the drawing, an L-shaped water stop rubber 11 that comes into pressure contact with the pier C is vertically installed.

In the present invention, it is not considered to provide a doorstop hardware on the pier C side, but the material and shape are selected so that the above-mentioned water stop rubber 11 can flexibly come into contact with the unevenness of the concrete surface. .

Reference numeral 12 denotes water-stop rubbers attached to the rear surface of the lower end of the flat plate 8 of each square cutter main body 1, and the water-stop rubbers 12 are in close contact with each other and exhibit a complete water-retaining function.

In the present invention, the full-width drop main bodies 1 are connected to each other to form an integral body, and are pressed against the dam side while equally receiving water pressure to close the water gate. However, due to the action of wind and waves, the water pressure direction If there is a risk of moving forward or backward, use the third
As shown by imaginary lines in the figure, the restraining hardware 13, 14, 15
should be placed appropriately.

Reference numeral 16 shown in FIGS. 1 and 2 is a hole for hanging the corner drop main body 1, which is provided on one side of the bridge floor and directly above the support beam 3 (corner drop arrangement position). body 1
is suspended from the hanging hole 16, and its hanging piece 2 is brought into contact with the support beam 3 via the guide roller 6, and in this state, by moving laterally, each corner cutting body 1 is moved as shown in FIG. It can be arranged in the state shown in FIG.

In addition, the lateral movement of the corner dropping main body 1 can be carried out by attaching a wire rope to it or by using a board regularly provided at the dam.

Furthermore, the hanging hole 16 is closed with a suitable lid 17 when not in use.

Further, in order to increase the stability when moving the corner cutter body 1 laterally along the support beam 3, a rail that fits the guide roller 6 is provided.

The present invention has a structure as described in the embodiments above, and water pressure acts equally on the full-width drop main body, and the load is borne by the support beam and the front of the dam crest, so stable dam closure is achieved. There is no need to install any hardware such as doorstops.

In addition, since the corner drop main body is suspended using a suspension hole provided in the bridge floor, it can be easily and securely attached to the support beam, and the stability of the crane operation is also ensured.

In addition, it becomes easy to adjust the main body of the waterway in the width direction of the waterway, and repair work can be carried out without lowering the water level at all.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a side view, and FIG. 3 is a cross-sectional view. 1 is a corner drop main body, 2 is a suspension piece, 3 is a support beam, 5, 6 are guide rollers, 10, 11, 12 are water stop rubber, 16 is a hanging hole, C is a pier, and D is a bridge.

Claims (1)

[Scope of utility model registration request] A corner drop main body consisting of a plurality of vertically long pieces each having a hanging piece protruding from the top end and connected to each other to form a watertight structure, and further equipped with water stop rubber that presses against the inner surface of the pier and the front surface of the dam crest, and the pier. A support beam installed between the upper inner walls of the bridge and a suspension hole for the corner drop main body provided in a part of the bridge deck, and a guide that rolls in contact with the support beam on the corner drop main body and its suspension piece. A corner removing device characterized by being provided with a roller.