JPS62179628A - Wave maker - Google Patents

Abstract

PURPOSE:To achieve a simple construction and low cost while facilitating the operation and maintenance, by adjusting a screw fitted with a shaft driven to be rotated and the position of a pin of a link mechanism engaged therewith to swing a wave making board. CONSTITUTION:When an adjusting pin 36 is lowered and a motor 22 is rotated, a screw 23 reciprocates a longitudinally together with the upper end of an upper lever 25 and as the lever 25 turns clockwise on a shaft 27, the top of a wave making board 17 moves forward through a link 28. As the lower end O of the wave making board 17 will not be displaced by the setting of the position of the pin 36, the wave making board 17 performs a flap type swinging. As the upper and lower links 28 and 31 moves longitudinally at the same distance in the same phase by adjusting positions of the shaft 27 and the pin 36. Hence, the wave making board 17 performs a piston type swinging. This eliminate deviation in the movement between the upper and lower parts of the wave making board to halve the number of motors and reduce the cost, thus facilitating the operation and maintenance.

Description

[Detailed Description of the Invention] [Industrial Application Field] In order to investigate the influence of wave power on marine structures, etc., various types of waves are generated in an aquarium, and these waves affect the marine structure placed in the aquarium. A common method is to investigate how it affects a model of an object.

The present invention relates to a wave-making device for generating waves in water in an aquarium in such a case.

[Prior Art] Waves have different forms depending on the depth of the water, so a wave-making device needs to have the ability to generate various types of waves depending on the depth of the water in the tank.

As shown in FIG. 8, when the water is deep, the wave-making plate a is required to have a so-called flap-type function in which the lower end swings and the upper end swings back and forth with the center of motion.

Further, as shown in FIG. 9, when the water depth is shallow, the wave-making plate a is required to have a so-called piston-type function in which it moves back and forth in parallel while maintaining a vertical posture.

Furthermore, as shown in Figure 10, when the water depth is intermediate, the wave-making plate a has a flap type and a piston type, in which the upper end swings in multiple directions and the entire body moves forward (in multiple directions horizontally). Both functions are required.

An example of a wave-making device conventionally used to perform such a function will be explained with reference to FIGS. 11 to 13. Two sets of pole screw shafts c and d are mounted on a frame
are provided horizontally in the front-rear direction, and these pole screw shafts C1d each have a pole screw e,
f are screwed together. and pole screw shaft c,
When d is rotationally driven by a motor q, the pawl screws e and f move in the front-rear direction along the pawl screw shafts c and d.

One pole screw e is connected to the upper end of the wave-making plate a via an upper link i, and is in front of the pole screw e)
The upper end of the wave-making plate a is moved back and forth as the wave changes.

As shown in FIG. 13, a vertical lever j is located at the front of the pedestal, and the intermediate portion of the lever j is pivoted to the pedestal by a pin k.

And the upper end of lever j is a link! is connected to the pole screw f, and the lower end of the lever j is connected to the lower link m.
is connected to the lower end of the wave-making plate a. If you move the hole screw f back and forth, it will link! , -lever j,
Via the lower link m, the wave-making plate a will move back and forth in opposite phases.

In such a conventional wave-making device, when moving the wave-making plate a as shown in FIG. 8, by moving the pole screw 0 back and forth without moving the pole screw f, the wave-making plate a The upper end swings back and forth with the lower end as the center of swing.

When moving the wave-making plate a as shown in Fig. 9, move the pole screw e back and forth, and at the same time move the pole screw f back and forth with the same stroke in the opposite phase.
The upper end and lower end of the wave-making plate a move back and forth in the same phase.

When moving the wave-making plate a as shown in Fig. 10,
At the same time as the pole screw e is moved back and forth, the pole screw f may be moved back and forth with a small stroke in the opposite phase.

[Problems to be Solved by the Invention] The conventional wave-making device described above has a ball screw V-lift c
, d # and two sets of pole screws e and f are required,
Four motors are required to rotate the pole screw shafts c and d. Therefore, the device becomes expensive, the amount of motor cables and control cables required to be arranged increases, phase deviations of pole screws e and f occur, and maintenance becomes troublesome.

The present invention aims to provide a wave-making device that has a simple mechanism, is inexpensive, and requires no maintenance.

[Means for Solving the Problems] The present invention provides an elevating pedestal that can be raised and lowered relative to a fixed pedestal provided in an aquarium, a suspension frame that is supported by the elevating pedestal so as to be movable in the front and back direction, and A vertically extending wave-forming plate whose upper end side is supported by a frame, and a vertically extending upper part whose middle part is pivotally connected to the elevating frame and whose upper end side is supported by the elevating frame so as to be movable in the front and rear direction. lever for
a horizontal upper link having one end pivoted to the lower end of the upper moving lever and the other end pivoted to the upper part of the wave-making plate;
A vertically extending lower moving lever whose upper end side is supported by the lifting frame so as to be movable in the front and back direction together with the upper moving lever, and the lower moving lever can be moved in the vertical direction by passing through the lifting frame and the lower moving lever. a vertical adjustment pin positioned as shown in FIG. This is a wave-making device characterized by comprising: a lower link;

Ru.

[Function] If the vertical adjustment pin is lowered and the upper end of the upper moving lever and the upper end of the lower moving lever are moved in the forward direction with respect to the elevating frame, the wave-making plate will change to the flap shape shown in Figure 8. If you raise the vertical adjustment pin and position it in the middle of the lower moving lever, and move the upper end of the upper moving lever and the upper end of the lower moving lever in the front and back direction with respect to the lifting frame, the wave-making plate will move. It has a piston-type function as shown in Figure 9, and by positioning the vertical adjustment pin in the middle of the above and moving the upper end of the upper moving lever and the upper end of the lower moving lever in the front and back direction with respect to the elevating frame, it is possible to create waves. The plate comes to perform both flap-type and piston-type functions as shown in FIG.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a water tank, which is formed of a bottom plate 2 and side walls 3 surrounding it on all sides, and has a rectangular planar shape of, for example, 80 m x 35 m. Inside the aquarium 1, there is a fixed pedestal 4 fixed to one or two sides of the bottom plate 2 and side walls 3. surface) is an inclined surface 5 whose lower part extends forward.
It has become. The inclined surface 5 has H-shaped rails provided in the vertical direction, and a rack rail 6 of an appropriate length is attached thereto.

An elevating pedestal 7 is located on the inclined surface 5 side of the fixed pedestal 4. The elevating frame 1 is provided with wheels 8 that roll along H-shaped rails on the inclined surface 5 and wheels 9 with pinions that mesh with the rack rails 6 and move.
．． When the wheel 9 with a pinion is rotated via the pinion rotating rod 11, the elevating pedestal 1 is moved up and down along the inclined surface 5 of the fixed pedestal 4. The elevating frame 1 can be fixed at an arbitrary height on the inclined surface 5 using fixing bolts 12.

As shown in FIGS. 2 and 3, the upper surface of the elevating frame 7 is formed in a slatted shape with a large number of elongated spaces 13 arranged in parallel in the front and back direction, and a wave plate suspension rail 14 is attached in the front and back direction. It is being With this wave plate suspension rail 14 in between, the empty space 1
A suspension frame 15 is provided which extends downward through the suspension frame 15. At the lower end of the suspension frame 15, the upper end of the wave plate 17 is pivoted by a pin 16 as shown in FIGS. has been done. As shown in FIG. 4, the wave-making plates 17 have a vertically long rectangular shape, and are arranged in large numbers, for example, with a width of 0.5IIl and a height of 2m. As shown in FIGS. 1 and 4, the suspension frame 15 is equipped with wheels 18 that move on the wave plate suspension rail 14, and the suspension frame 15 pivotally supports the upper end of the wave plate 17. It can be moved in the front and rear directions with respect to the elevating frame 7 along the wave-making plate suspension rail 14 while maintaining a vertical posture. Note that if the wheels 18 are made of two thin films, the stability of the suspension frame 15 will be further improved.

Above the wave-making plate suspension rail 14, there is a wave-making plate suspension rail 1.
4. A pole screw shaft 1 extending rearward (to the right in Fig. 1, upward in Fig. 3) from the middle in the length direction of 4.
9 is installed, and the pole screw shaft 19 is
A motor 22 is supported horizontally by bearings 20 and 21 attached to the upper surface of the lifting frame 7, and is attached to the rear end.
It is designed to be rotationally driven in a desired direction.

A pole screw 23 is screwed into the pole screw shaft 19, and a pin 2 is attached to the side of the pole screw 23.
4, the upper end of the upper moving lever 25 and the upper end of the lower moving lever 26 are pivotally connected. The upper moving lever 25 and the lower moving lever 26 are both provided in the vertical direction, and the upper moving lever 25 is made shorter than the lower moving lever 26.

The vertical intermediate portion of the upper moving lever 25 is pivotally connected to the elevating frame 7 by a shaft 27 as shown in FIGS. 1 and 2, and the lower end of the upper moving lever 25 has a horizontal One end of the upper link 28 is pivotally connected with a pin 29.

The upper link 28 is connected to the wave plate 1 as shown in FIG.
It is pivotally connected to the upper back side of 7 with a pin 30.

As mentioned above, the upper end of the lower moving lever 26 is connected to the pin 2.
4 is pivotally attached to the side surface of the pole screw 23, and as shown in FIG. At the lower end of the lower moving lever 26, one end of a horizontal lower link 31 is pivotally attached to a pin 32, as shown in FIG. It is pivotally connected to the lower front side of the body with a pin 33.

As shown in FIGS. 1 and 2, the lower moving lever 26 is provided with a long hole 34 extending in the length direction, and the elevating frame 7 is also provided with a vertical hole 34 corresponding to the long hole 34. A long hole 35 (see FIG. 2) is provided. These long holes 3
4 and 35 are penetrated by one horizontal vertical adjustment pin 36, and a vertical vertical adjustment screw 37 is screwed into the center of the vertical adjustment pin 36. The vertical adjustment screw 37 is rotatably supported in the vertical direction by the elevating frame 7. When the vertical adjustment screw 37 is rotated via the handle 38, screw rotation rod 39, and bevel gear 40 shown in FIG. The adjustment pin 36 is inserted into the elongated hole 34 shown in FIG.
, 35.

The depth of water (a) water 41 placed in the water tank 1 shown in FIG. 1 will be varied within a range of about 3.5 m to 0.4 m depending on the content of the experiment. When using this wave-making device, after removing the fixing bolt 12, the pinion wheel 9 is rotated via the handle 101 and the pinion rotating rod 11, and the elevating frame 7 is moved along the inclined surface 5 of the fixed frame 4. After adjusting the height of the lifting frame 7 so that the upper link 28 is almost at the water surface of the aquarium water 41, fix the fixing bolt 1.
2, the elevating frame 7 is fixed to the fixed frame 4.

When the wave-making plate 17 is operated as a flap type function as shown in FIG. 8, the handle 38 shown in FIG.
The vertical adjustment screw 37 is rotated via the screw rotating rod 39 and the bevel gear 40, and the vertical adjustment pin 36 is lowered to the lowest part of the long holes 34 and 35 shown in FIG. At this time, the vertical adjustment pin 36 is at a lower position than the pin 29 which pivotally connects one end of the upper link 28, as shown in FIG. When the motor 22 is driven in the state shown in FIG. 5 so as to change the rotation direction at an appropriate period, the pole screw shaft 19 also rotates accordingly, and the pole screw 23 screwed into the pole screw shaft 19 rotates as follows. It reciprocates in the front and back direction together with the upper end of the upper moving lever 25 and the upper end of the lower moving lever 26.

The upper part of the upper moving lever 25 moves backward (to the right in FIG. 5), and the upper moving lever 25 rotates clockwise in FIG. 5 about the shaft 27, and the upper link 2
The upper part of the wave-making plate 17 moves forward via the wave-making plate 8. At this time, the lower moving lever 26 also moves backward at the same time, so
The lower moving lever 26 moves around the vertical adjustment pin 36 at the fifth position.
Rotating clockwise in the figure, the pin 32 moves forward by a distance smaller than the distance moved by the pin 29, and the lower link 31
The pin 33 is moved forward via. The upper part of the wave-making plate 17 moves forward greatly and swings vertically, but the lower position of the vertical adjustment pin 36 is set so that the lower end 0 of the wave-making plate 17 does not displace. put.

When the pole screw shaft 19 rotates in the opposite direction and the upper end of the upper moving lever 25 and the upper end of the lower moving lever 26 move forward, the upper moving lever 25 moves counterclockwise around the shaft 27 in FIG. As the wave-making plate 17 rotates, the upper part of the wave-making plate 17 moves rearward via the upper link 28. At this time, the lower moving lever 26 rotates counterclockwise in FIG. This will cause it to swing backwards around O. By changing the distance that the pole screw 23 moves back and forth, the swing angle of the wave-making plate 17 changes.

To explain the case where the wave-making plate 17 operates as a piston-type function that moves back and forth while maintaining a vertical posture as shown in FIG. 9, in this case, the upper link 28 and the lower link 31 are moved at the same distance at the same time. You have to move back and forth. In FIGS. 1 and 2, @27 is pin 24.
If you keep it centered between 29, the top link 28
The moving distance is equal to the moving distance of the pole screw 23, but the moving distance of the lower link 31 changes depending on the vertical position of the vertical adjustment pin 36. So bottom link 3
In order to make the moving distance of 1 equal to the moving distance of the upper link 28, that is, the moving distance of the pole screw 23, the vertical adjustment pin 36 should be positioned at the center between the pins 24 and 32.

Therefore, the vertical adjustment pin 36 is inserted into the elongated hole 34°35 as shown in FIG.
When the vertical adjustment pin 36 is positioned at the upper end of the
．． The upper end positions of the elongated holes 34 and 35 may be set so as to be centered between the holes 32 and 32.

In this way, each of the vertical adjustment pins 3 is raised to the upper end of the elongated holes 34 and 35, and when the motor 22 rotates the pole screw shaft 19 so as to change the rotation direction at an appropriate period, the upper link 28 and the lower link 31 The wave-making plate 17 moves back and forth with the same phase and the same distance.
It will perform the piston-type function shown in the figure.

When the wave-making plate 17 is operated with both flap-type and piston-type functions as shown in FIG. The vertical adjustment pin 36 may be positioned at. In this way, as shown in FIG. 6, the position of the vertical adjustment pin 36, which is the center of rotation of the lower moving lever 26, is higher than in the case of FIG. is larger than in the case of FIG. 5, so the wave-making plate 11 is
It will move as shown in the figure.

In addition, in FIG. 1, the fixing bolt 12 in the aquarium water 41
To prevent installation or removal of the
2 may be omitted, and the rotation prevention mechanism of the handle 10 may be provided.

FIG. 7 shows another embodiment of the present invention, in which the same parts as in FIG. 1 are given the same reference numerals.

In the embodiment shown in FIG. 7, the suspension frame 15 is connected to the wave plate suspension rail 1 by means of linear bearings 42 provided at the front and rear.
4 and move back and forth along the suspension frame 15.
has a bent shape, and its lower end is pivotally connected to the upper back surface of the wave-making plate 17 with a pin 30 together with the other end of the upper link 28,
It supports the weight of the wave-making plate 17. In addition, in order to avoid applying the load of the lever or link to the pole screw shaft 19, a movable body 45 that moves in the front-rear direction on a lever suspension rail 43 provided above the pole screw shaft 19 via a linear bearing 44 is installed. 2, attach the pole screw 23 to the lower surface of the lever 2
6 and half the weight of the lower link are borne by the lever suspension rail 43.

The example of the conventional method described above and the embodiment of the present invention described above differ in the size of the wave-making plates (the former is a type that can generate only straight waves by arranging large wave-making plates in a straight line). There is a model that can generate straight waves or serpentine waves by arranging many small wave-making plates, but the principle of operating a single wave-making plate is the same. That is, when the embodiment of the present invention is applied to the former, two screws may be required for a total of four pole screw shafts c and d, and two screws may be required for a total of four motors Q.

[Effects of the Invention] According to the present invention, there is no misalignment between the upper and lower parts of the wave-making plate, and the number of motors required for operation is halved, so the number of power cables, control cables, and I#1IIl panels is halved. This has the effect of reducing costs, reducing weight, and making operation and maintenance easier.

[Brief explanation of drawings]

FIG. 1 is a side view of one embodiment of the present invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, FIG. 3 is a plan view of FIG. 1, and FIG.
5 and 6 are side views showing the operation of the main parts; FIG. 7 is a side view of another embodiment of the present invention;
Figures 8 to 10 are explanatory diagrams of the operation of the wave-making plate, Figure 11 is a plan view of the conventional device, and Figure 12 is the same as in Figure 11)O[-)
01 sectional view and FIG. 13 are side views seen from the line ■-■ in FIG. 11. 1 is a water tank, 4 is a fixed frame, 7 is an elevating frame, 15 is a suspension frame, 17 is a wave-making plate, 25 is a lever for moving the upper part, 26
28 is an upper link, 31 is a lower link, and 36 is a vertical adjustment bin.

Claims (1)

[Claims] 1) An elevating pedestal that can be moved up and down relative to a fixed pedestal installed in the aquarium, a suspended frame supported by the elevating pedestal so that it can move back and forth, and a vertical structure whose upper end is supported by the suspended frame. a corrugated plate, a vertically extending upper moving lever whose intermediate portion is pivotally connected to the lifting frame and whose upper end side is supported by the lifting frame so as to be movable in the front-back direction; and one end of the upper moving lever. a horizontal upper link having a lower end pivoted and the other end pivotally attached to the upper part of the wave-making plate; and a vertical link having an upper end supported movably in the front and back directions on the elevating frame together with the upper moving lever. a lower movement lever that extends to the lower movement lever; and a vertical adjustment pin that passes through the elevating frame and the lower movement lever and is positioned so as to be movable in the vertical direction;
A wave-making device comprising: a horizontal lower link having one end pivotally attached to the lower end of the lower moving lever and the other end pivotally attached to the lower part of the wave-making plate.