Reinforcement metal fittings for FRP tanks

Abstract

To provide reinforcing metal fittings for an FRP water tank that has been used for many years.SOLUTION: A hanging metal fitting respectively locks a flange of an opposing corner of an FRP water tank at an inverted U-shaped part by aligning an L-shaped bottom with a surface of the FRP water tank, and then folding a tip back into an inverted U shape. Further, a vertical side of an inverted L-shaped auxiliary metal fitting is aligned with an L-shaped vertical side of the hanging metal fitting, and the bottom is aligned with the surface of the FRP water tank. A pull bar is passed from an auxiliary metal fitting side through a through hole in which longitudinal sides of the hanging metal fitting and the auxiliary metal fitting are parallel to the surface of the FRP water tank, the hanging metal fitting and the auxiliary metal fitting are fixed to the tip, and the pull rod from one corner side and the pull rod from the other corner side are connected with a turnbuckle.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a reinforcing metal fitting for an FRP tank, and in particular to a reinforcing metal fitting against deterioration over time. [Background technology]

[0002] FRP tanks are used as water storage tanks in buildings such as apartment buildings. FRP is a synthetic resin reinforced with glass fiber, and FRP panels are used to construct water tanks.

[0003] That is, FRP or stainless steel flanges are fixed to the edges of 1m square or 1x2m square FRP panels, and adjacent panels are assembled into an aquarium by abutting the flanges together and screwing them together.

[0004] The tank assembled in this way is placed in an outer frame made of steel, and of course the steel frame and the tank are fixed in place. There are also tanks assembled only with FRP panels.

[0005] The inside of the tank is reinforced by stretching tension metal fittings (beams) made of stainless steel or the like across both sides of the inside of the tank, and the tension rods are fixed to the steel frame. [Prior art documents] [Patent documents]

[0006] none [Non-patent literature]

[0007] none Summary of the Invention [Problem to be solved by the invention]

[0008] An aquarium assembled in this way will deteriorate over the course of 10 years and become susceptible to breakage.

[0009] Damage will manifest as the screws coming loose from the flange or the tension fittings being torn off, and if this condition is left unattended, it will cause cracks or damage to the FRP itself, paralyzing the water supply function.

[0010] Fish tanks in schools and apartment buildings are usually exposed to the outdoors. Therefore, their temperature drops to around zero in the winter, but in the summer, in the case of stainless steel, it rises to around 50°C. According to literature, the thermal expansion coefficient of stainless steel at 50°C is 0.864 mm / m, so if the length is 5 meters, it will expand and contract by about 4 to 5 mm per year, and in the summer when temperatures rise, it will expand and contract by about 2 mm every day.

[0011] When vibrations caused by earthquakes or wind are added to this, the damage will be accelerated.

[0012] The present invention has been proposed in view of the above-mentioned conventional circumstances, and proposes a reinforcing metal fitting for aged FRP water tanks. [Means for solving the problem]

[0013] The present invention is the following reinforcing metal fitting for an FRP aquarium tank.

[0014] Use the hanging bracket to attach the L-shaped base to the FRP tank. top surface Then fold the tip back into an inverted U shape. hand , the inverted U-shaped part of the FRP water tank The left and right ends of the corners The flanges are locked together.

[0015] Also, align the vertical side of the inverted L-shaped auxiliary metal fitting with the vertical side of the L-shaped hanging metal fitting, and connect the bottom side to the top surface Keep it in line with the above.

[0016] Left and right The pull rod is attached to the vertical side of the hanging bracket and auxiliary bracket of the FRP tank. top surface parallel to Opened Insert the auxiliary bracket into the through hole. Through,The hook and auxiliary fitting are fixed to the tip, The butt joints at the rear ends of the left and right pull rods Connect with turnbuckles.

[0017] In the above example, two metal fittings, a hanging fitting and a reinforcing fitting, are used, but it can also be configured with only one receiving plate as shown below.

[0018] The receiving plate is for the corner of the FRP tank. Both left and right ends At the end of the flange At right angles with a given width The pull rod is abutted against the Left and right The tension rod is inserted into the mounting hole provided in the receiving plate, and the receiving plate is fixed to the tip of the tension rod. Left and right A backing plate is disposed along a plane perpendicular to the abutted surface.

[0019] In this case, the reinforcing arm is Left and right At both horizontal ends of the receiving plate than a pull rod The receiving plate of the tension rod from two points at different positions twist A specified distance behind 2 bottles It is preferable to stretch it out.

[0020] In addition, if both ends of the support plate are bent inward at right angles to the length of the flange of the FRP water tank and the ends are rounded, the panel surface that makes up the FRP water tank can withstand the tensile force of the tension rod, preventing damage to the flange. [Effects of the Invention]

[0021] As a result, by rotating the turnbuckle in the tightening direction, it is possible to tighten both opposing corners of the FRP tank. This means that if the above construction is carried out before the joints between the flanges become damaged over time, the FRP tank will not be damaged as in the past and will last longer. [Brief explanation of the drawings]

[0022] [Figure 1]FIG. 2 is a perspective view of a metal fitting used in the implementation of the present invention. [Figure 2] FIG. 1 is an enlarged view of the reinforcement structure of the FRP tank used in the present invention. [Figure 3] 1 shows a reinforcement structure for an FRP tank using the metal fittings of the present invention. [Figure 4] FIG. 1 illustrates another embodiment of the present invention. [Figure 5] FIG. 10 illustrates yet another embodiment of the present invention. [Figure 6] 6 is a diagram showing an example of use of the metal fitting shown in FIG. 5. DETAILED DESCRIPTION OF THE INVENTION

[0023] <First Embodiment> FIG. 1 is a perspective view of a reinforcing metal fitting used in the practice of the present invention, with FIG. 1(a) showing the state as seen from the rear side and FIG. 1(b) showing the shape as seen from the front side.

[0024] The tip of the base of the L-shape is folded vertically downwards in an inverted U-shape to form hook 1.

[0025] The vertical side of the inverted L-shaped auxiliary metal fitting 2 is arranged so that its back faces the L-shaped vertical side of the hanging metal fitting 1.

[0026] Furthermore, fixing holes 11, 21 are passed horizontally relative to the vertical sides of the hook fitting 1 and auxiliary fitting 2, and tension rod 3 is inserted into fixing holes 11, 21 to fix the hook fitting 1 and auxiliary fitting 2 to its tip. This fixation is achieved by screwing nuts 31, 32 via spring washers onto the hook fitting 1 side and auxiliary fitting 2 side of the tip of tension rod 3, with the vertical sides of the hook fitting 1 and auxiliary fitting 2 sandwiched between nuts 31, 32. The rear end of tension rod 3 is fixed so that it protrudes toward auxiliary fitting 2.

[0027] The rear end of the tension rod 3 may be extended in a rod shape, or may be extended by forming a ring 33 for hanging a wire at the rear end.

[0028] Whether the tension rod 3 is extended in the form of a rod or a wire, it is configured to have a turnbuckle 4 at the rear end as shown in Figs.

[0029] FIG. 2 is an enlarged view showing an example of use of the reinforcing metal fittings having the above-mentioned configuration, and FIG. 3 is an overall view.

[0030] As mentioned above, the corners of water tub 20 have flanges 21 that protrude horizontally, so the inverted U-shaped portions of the hook fittings 1 of the reinforcing metal fittings 10 are hooked onto the flanges 21 of the two left and right corners of the water tub. In this state, the rear ends of the pull rods 3 from both the left and right are butted together, and turnbuckles 4 are fitted into the butted portions and then twisted in the tightening direction.

[0031] As a result, the reinforcing metal fittings 10 at both ends of the water tank 20 are used to fasten both ends of the water tank 20, thereby reinforcing those portions.

[0032] As shown in FIG. 3, by installing pairs of reinforcing metal fittings 10 connected by turnbuckles 4 at multiple locations on water tank 20, the water tank can be reinforced.

[0033] <Embodiment 2> FIG. 4 shows another embodiment of the present invention.

[0034] A support plate 5 of a specified width is fixed to the tip of the tension rod 3 via a spring washer at a right angle to the tension rod 3. Furthermore, two reinforcing arms 6 are fixed across from both ends of the support plate 5, spanning a specified distance from the support plate 4 of the tension rod 3 toward the rear end side.

[0035] In this case, the tip of the flange 21 that protrudes horizontally from the FRP tank is supported by the support plate 5, and the rear ends of the tension rods 3 from the support plate 5 that supports the flanges 21 at both ends of the tank are butted together, and the turnbuckles 4 are fitted between the rear ends.

[0036] Therefore, by hanging the reinforcing metal fittings 10 consisting of the plurality of receiving plates 5 and the tension rods 3 on the corners on both sides of the plurality of water tanks and fastening the turnbuckles 4, the water tanks can be reinforced.

[0037] Turnbuckles 41, 42 can also be interposed at intermediate positions of the reinforcing arm 6, and by tightening the turnbuckles 41, 42 as required, more effective reinforcement can be achieved.

[0038] <Third Embodiment> In the metal fitting shown in Figure 4, the backing plate 5 receives the tip of the thin flange 21 of the FRP water tank 20, which may damage the flange 21. Therefore, as shown in Figure 5, both lower end portions of the backing plate 5 are folded back at right angles inward (towards the FRP water tank 20) ​​by the length of the overhang of the flange 21, and the ends are folded back to form rounded contact portions 51.

[0039] With this configuration, as shown in FIG. 6, by abutting the abutment portion 51 against the surface of the FRP panel that constitutes the FRP water tank 20 of the flange 21, it is possible to avoid applying force directly to the flange 21.

[0040] Furthermore, vertical flanges are formed at the connecting portions 22 of the FRP panels that make up the water tank 20, and are screwed together to form the joints 22, so the spacing between the abutment portions 51 at both ends of the support plate 5 shown in Figure 5 is such that it can straddle the joints 22.

[0041] As explained above, the present invention can be used to reinforce an FRP tank when the deterioration of the FRP tank progresses and an accident occurs, such as the FRP panel coming loose or the pull rod inside the FRP tank breaking, but it is more effective to carry out the work after the FRP tank is installed, before such an accident occurs. [Explanation of symbols]

[0042] 1 Hanging hardware 2 Auxiliary fittings 3 pull rod 4(41, 42) Turnbuckle 5 receiving plate, 51 contact portion 6 Reinforcement Arm 10 Reinforcement metal fittings 20 FRP water tank 21 flange

Claims

1. The bottom of the L-shape is aligned with the top surface of the FRP tank, and the tip is folded back into an inverted U-shape to fasten the flanges on both ends of the FRP tank that protrude from the corners. An auxiliary metal fitting that aligns the vertical side of the inverted L-shape with the vertical side of the L-shape of the left and right hanging metal fittings and aligns the bottom side with the top surface of the FRP water tank; The vertical sides of the hanging metal fittings and auxiliary metal fittings are passed through holes that are opened parallel to the top surface of the FRP water tank from the auxiliary metal fittings side, and left and right pulling rods with the hanging metal fittings and auxiliary metal fittings fixed to their tips are inserted. A turnbuckle fitted to the butted portion at the rear end of the left and right pulling rods; A reinforcing metal fitting for an FRP water tank, characterized by comprising:

2. Left and right support plates of a predetermined width that are abutted against the tips of the flanges at both ends of the corners of the FRP water tank; The left and right support plates are fixed at right angles, and left and right pull rods are arranged along a surface that is perpendicular to the upper surface of the FRP water tank and to which the support plates are abutted; two reinforcing arms stretched from two points at both horizontal ends of the left and right support plates, spaced apart from the tension rod, to a predetermined distance behind the support plates of the tension rod; A turnbuckle fitted to the butted portion at the rear end of the left and right pulling rods; A reinforcing metal fitting for an FRP water tank, characterized by comprising:

3. A reinforcing metal fitting for an FRP water tank as described in claim 2, wherein both ends of the lower end of the support plate are provided with abutment pieces bent toward the FRP water tank at right angles to the support plate, and the abutment pieces abut against the lower surface of the flange of the panel that constitutes the FRP water tank.

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