JPS58204333A - Testing water tank - Google Patents

Abstract

PURPOSE:To obtain a testing water tank which can be handled easily, has a long life and is capable of varying the water depth, by providing a temporary bottom plate which is immersed in the water and is parallel to the bottom of the water tank, and its lifting means. CONSTITUTION:When a wire is wound by a winch, temporary bottom plates 4 of the left and right are drawn up, move to the upper position, executing a parallel movement by being guided by turning of a link arm 13, and joint parts of both temporary bottom plates 4 are fitted to each other. Subsequently, when both of them are stuck by a bolt, both temporary bottom plates 4 can form a temporary bottom face consisting of the same horizontal face at prescribed water depth so as to have no clearance by a packing material. Also, height from the water tank bottom to the upper face of the temporary bottom plate becomes constant at all times, and the water depth between the water surface and the temporary bottom plate becomes constant against the height of the reference water surface of the water tank. Also, a slight change of the water depth of the temporary bottom can be managed by pouring or discharging a small quantity of water of the water tank.

Description

[Detailed description of the invention] The present invention relates to a test tank.

In various tests conducted using test tanks, the depth of the bottom of the tank may be set to a desired value in order to investigate the effect of water depth on water currents or waves. , as shown in the side view of FIG. 1 and the partially enlarged perspective view of FIG. Strut material7. A plurality of nine frame frames each having a diagonal member 8, etc., a height adjustment screw 99, and a leg plate 10 are arranged side by side on the tank bottom 2, connected by a connecting plate 6, and the weight 9 prevents the frame from floating. A temporary bottom plate φ is fixed on the frame.

However, such means have the following drawbacks.

(1) Carrying the underframe into the test tank is extremely complicated and time consuming.

(2) Finishing with a temporary bottom plate requires adjustment work such as laying a temporary bottom plate, adjusting the top and bottom dimensions, and adjusting on-site.

(3) During loading and unloading, the underframe is extremely prone to deformation due to collisions, etc., and reproducibility when resetting is extremely low.

(4) When the underframe is not in use, it is carried out of the aquarium and a place to store it requires an extremely large amount of space.

(5) Test tanks with vast water surfaces always require temporary connection work in the plane.

(6) Metal is recommended as the material, but since it is carried into the air when not in use and brought into the water when in use, it is frequently brought in and out of water, and corrosion progresses significantly.

(For force transport, a transporter crane that can cover a wide flat area is required.

The present invention was proposed in view of the above circumstances, and aims to provide a test tank with a variable water depth that has a long service life and is easy to handle. The water tank is characterized by comprising a plate and a lifting means provided at the bottom of the water tank for lifting and lowering the temporary plate to a desired height.

An embodiment of the present invention will be explained with reference to the drawings. FIG. 3 is a longitudinal cross-sectional view thereof, FIG. 4 is an enlarged perspective view showing the link arm of FIG. 3, and FIG. 5 is a joint of the temporary plate shown in FIG. FIG. 6 is a partially enlarged vertical sectional view showing the temporary placement plate shown in FIG. 5 joined together, and FIG. 7 is a partial perspective view showing the temporary placement plate shown in FIG. FIG. 8 is a side view showing how to raise the temporary plate, and FIG. 8 is a side view showing how to store the temporary plate from the upper position to the bottom of the tank.

In the above figure, 3 is the water surface of the aquarium, 4 is the left and right temporary plates according to the present invention, and 11 is the lower end of the link arm 13, which is pivoted with a pin 12 so as to be rotatable in a vertical plane including the longitudinal direction of the aquarium. 14 is a lateral bottle that pivots the front and rear sides of the left and right temporary plates 4, 4 to the upper ends of link arms 13 and 13, respectively; 15 is a lower pin support device 11 that connects the bottom of the tank 2; 16 is a convex joint surface of the left temporary plate 4, 17 is a concave joint surface of the right side bottom plate 4,
18 is a packing material such as hard rubber attached to the upper surface of the left side bottom plate 4 in order to eliminate the gap between the upper surfaces of the left and right temporary plates 4, 4 when joining them; 19 is a packing material 1 for joining.
The contact surfaces 20 and 21 of the right side bottom plate 4 which abut on the temporary mounting plates 4 and 8 to eliminate the gap on the upper surface of the temporary plates 4, 4 are connected to the side plate bottom plate 4 and the right side bottom plate 4 through bolts 22 when joining, respectively. Bolt holes are drilled in the left and right temporary plates 4 for fixing them to each other, 23 is a holding plate for the packing material 18, and 24 is a plurality of bolt holes for fixing the packing material 18 to the left side bottom plate 4 via the holding plate 23. , 26 is a gasket that fits into the groove 25 carved in the left side bottom plate 4 and comes into contact with the lower surface of the joint end of the right side bottom plate 4 during joining, 27 is a winch, and 28 is a temporary fixing screw whose lower end is on the left and right, respectively. When the wires 31 are locked to the eye bolts 29 protruding from the left and right ends of the plates 4, 4, the upper ends of the wires are wound around the winches 27, and the lower ends of the wires 31 are locked to the eye bolts 29. The top end is pulley 3
0 is the wire that is wound around the winch 27 after being turned.

In such a device, in order to bring the left and right temporary plates 4 from the storage position to the upper position, as shown in FIG.
The wire 28 is wound up by the winch 27.

Then, as shown by the broken lines, the left and right temporary plates 4, 4 stored in the aquarium bottom 2 have wires 28 and 28, respectively.
Raised by.

Guided by the rotation of the link arm 13.13, it moves in parallel to the upper position shown by the solid line, and the joint portion of both temporary bottom plates 4, 4 passes through the state shown in FIG. 5 and then as shown in FIG. 3. Since they fit into each other, they are fixed together with bolts 22, as shown in FIG.

As a result, both temporary bottom plates 4, 4 can form a temporary placement surface on the same horizontal surface at a predetermined water depth without any gaps in the packing material 18.

The height from the bottom of the aquarium to the top of the temporary plate is always constant, and the water depth between the water surface and the temporary plate is constant relative to the standard water surface height of the aquarium.1 In normal shallow water tests, the water depth The need for changes is usually within a small and limited range, so the height of the temporary fit is kept constant, and slight changes in the depth of the temporary fit can be covered by a small amount of water from the aquarium. can.

Incidentally, in order to conduct a shallow water test using only aquarium water injection and drainage without using a temporary board, it is necessary to move the wave-making or water flow generator up and down (first time), and to drain oil water from the aquarium (each time). The cost will be very high.Next, in order to store the left and right temporary plates 4, 4 in the upper position on the bottom of the tank, remove the bolts 22, and then use the winch as shown in Figure 8. 27 to wind up the wire 31 a little and then unwind it a little.

Then, the left and right bottom plates 4, 4 are separated from the left and right sides from the state shown in FIG. 6, pass through the state shown in FIG. 5, and are stored at the bottom of the water tank, respectively, as shown by the broken lines in FIG. 3.

In the above embodiment, the bottom plate is divided into two parts, each of which is pivotally connected to the bottom of the aquarium with a parallel link. However, the bottom plate is divided into three or more parts, each of which is pivotally connected to the bottom of the tank with a parallel link. It is also possible to do so.

According to such a device, the following effects can be achieved.

(1) The trouble of transporting the temporary fitting board to the aquarium is completely eliminated.

(2) In principle, no on-site adjustment work is required when erecting the temporary plate underframe.

(3) The problems of collisions, deformations, and poor reproducibility of the bottom plate due to the loading of the mortar are completely eliminated.

(4) When using the temporary fitting plate distortion, there is no need for space to store the underframe etc. outside the water tank.

(5) Even in an aquarium with a vast water surface, by preparing a bottom plate divided into two parts, it is possible to construct a temporary bottom plate with simple work.In principle, after configuring the mount, There is no need to connect the upper surface of the temporary fitting plate or to make it watertight.

(6) The bottom plate is always underwater, so the possibility of corrosion progressing is much smaller than with conventional temporary fitting plates even if they are made of the same material.

(When setting and storing the bottom plate, a simple winch can be installed, eliminating the need for a transporter crane that can cover a vast surface area.

In short, according to the present invention, the bottom plate is immersed in water and is parallel to the bottom of the aquarium, and the lifting means is provided on the bottom of the tank and raises and lowers the bottom plate to a desired height. Easy to handle 9. Provides a test tank with long life and variable water depth.
The present invention is extremely useful industrially.

[Brief explanation of the drawing]

Figure 1 is a vertical sectional view showing a known test tank, and Figure 2 is a vertical cross-sectional view of a known test tank.
3 is a vertical sectional view showing an embodiment of the present invention, FIG. 4 is an enlarged perspective view showing the link arm of FIG. 3, and FIG. 5 is an enlarged perspective view of the link arm of FIG. FIG. 16 is a partially enlarged vertical cross-sectional view showing the joint of the bottom plates shown in FIG. 5, and FIG. FIG. 8 is a side view showing how to raise the bottom plate to the upper position. FIG. 8 is a side view showing how to store the bottom plate from the upper position to the bottom of the tank. 2. Bottom of the tank, 3. Water surface, 4, 4. Bottom plate, 11.
・Lower pin support device, 12...Pin, 13...Link arm, 14...Pin, 15...Anchor pole), 16...Joint surface, 17...Joint surface, 18...Packing material, 19...
Contact surface, 20... Bolt hole, 21... Bolt hole, 22...
・Bolt, 23.. Holding plate, 24.. Holding screw, 25.
・Concave. Groove, 26- Packing material, 27... Winch, 28...
Wire, 29...Eye bolt, 30...Pulley, 31
・・Wire, sub-agent and patent attorney Masafumi Tsukamoto

Claims (1)

[Claims] 1. A test water tank comprising: a temporary bottom plate immersed in water and parallel to the bottom of the tank; and a lifting means provided on the bottom of the tank for raising and lowering the temporary bottom plate to a desired height.