JPH08254479A - Model ship for water tank testing - Google Patents

Abstract

PURPOSE: To mount a hull shape while manual and mechanical labors are saved by furnishing a plurality of test device units equipped as standard with a towing rod, self-cruising motor, measuring instrument, etc., on a reinforcement frame, and fitting them in recesses provided in the longitudinal arrangement over the whole length of a model of hull shape. CONSTITUTION: A stern tube fixing pedestal 15, torque/thrust measuring instrument mounting pedestal 16, motor mounting pedestal 17, and towing metal piece mounting pedestal 18 are installed, and the shaft angle of each of them is made adjustable, and they are fixed to test device unit boxes 19, 20 made of aluminum, rigid plate, angles, etc., with the aid of bolt and nut. The boxes 19, 20 are made expansive and contractive in the longitudinal direction (also across the width and over the height, according to the necessity) and secured by bolt and nut 21. Fixing jigs 22, 22' are to fix the boxes 19, 20 to a model ship fabricated from a chemical material such as foaming styrole with the aid of bolt and nut 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a model boat for aquarium test.

[0002]

2. Description of the Related Art The production of a model tank for tank test and the loading of the equipment necessary for the test have conventionally been carried out by building a model vessel with sufficient strength to withstand the weight of the equipment and the test conditions. A method of directly attaching a motor or a measuring instrument is generally used. For this reason, model tanks for aquarium testing have traditionally included plywood frames, model ships made of paraffin or urethane reinforced by attaching longitudinal members of wood or aluminum, and wooden model ships made of laminated wood. It is widely used and has sufficient strength to withstand the weight of test equipment and ballast weights. In addition, the model ship was manufactured as having a substantially constant thickness, the inside is a vertical recess over almost the entire length, and measuring instruments etc. are installed here. That is, in the conventional model tank for tank test, as shown in FIG.
As shown in the longitudinal sectional view and the plan view of FIG. 7, 01 is a model ship (material: paraffin, wood), 02 is a propeller, 03 is a stern tube through which a shaft 04 is passed, 05 is a joint having universal joints at both ends, and 06 is Torque / thrust measuring instrument, 07 is a motor, 08 is a tow metal fitting, 09 is a tow rod, 010 is a ballast weight, 011 is a tow clamp, 012 is a reinforcement, 013 is a tow guide metal fitting, 014
Indicates a reinforced parc head.

[0003]

However, in this type of model ship, it requires skill and a large amount of cost to manufacture it, and special equipment such as a paraffin melting furnace and a casting tank is required. There is a problem that a lot of man-hours are required for the test preparation for mounting and that it is a wasteful work because it is a repetitive work such as installing the same equipment one by one and removing it after the test each time the test is performed. By the way, for example, in a paraffin model ship, first, a wooden outer mold and an inner mold are made to make a model ship mold, and these are put into a casting tank and fixed, and the paraffin melts between the outer mold and the inner mold. It is necessary to cast molten paraffin in a furnace and cool it with water. Further, in that case, since the paraffin is cooled with water, the outer mold and the inner mold require water and water-tightness, and thus a troublesome work such as sticking vinyl on the surface is required. Furthermore, in order to secure the strength of the model ship, wooden stringers and bulkheads are attached, and these mounting operations account for 60 to 70% of the total cost of the paraffin model ship. Then, this mold is cut by a shaving machine and then hand-finished by an expert. In addition, in the production example of the wooden model ship, it is necessary to use an expensive material with good grain of wood in order to improve the workability, and in the production process, considering the plate thickness, the water line shape which is the horizontal cross section of the hull is used. Obtained from the design drawing, etc., marking this on the material, cutting it out, carrying out the stacking tank while fixing it with glue, nails, etc., attaching the bulkhead etc. and manufacturing the rough model material. These operations account for 50-60% of the total cost of a wooden model ship. Then, after this model rough material is cut by a shaving machine, a skilled person performs a hand finishing process. The test apparatus as shown in FIGS. 6 and 7 is mounted on the model ship thus completed and installed on the model ship. These test devices are always arranged in the same manner in general standard tests, and the work of installing and removing the test equipment for each model ship is a waste of work and is inefficient.

The present invention has been proposed in view of such circumstances, and a towing rod, a self-propelled motor, a measuring instrument, etc. necessary for testing propulsion performance and seaworthiness performance are made of aluminum or steel plate. Low cost to equip the manufactured box as a standard equipment and to manufacture it as a test equipment unit with sufficient strength, to attach and fix the shape of the hull made of chemical materials such as urethane, styrofoam, and Chemiwood to save labor and labor. The purpose of the present invention is to provide an economical model tank for tank test.

[0005]

In order to achieve such an object, the present invention equips a reinforcing frame with a towing rod, a self-propelled motor, a measuring instrument and the like, which are necessary for conducting a tank test, as standard equipment. It is characterized in that a single or a plurality of test device units as described above are detachably fitted in a longitudinal recess extending over substantially the entire length of the hull shape model.

[0006]

According to this structure, the model ship is inexpensive to manufacture, and the block material (solid material) such as Styrofoam, which is lightweight and easy to handle, can be used, and the cutting work from the block material can be performed by the NC shaving machine. It will be possible. Therefore, special equipment for the melting furnace and the casting tank, such as a paraffin model ship, becomes unnecessary, and it is possible to eliminate the manufacturing and casting work of the inner mold and the outer mold, which cost most of the cost. In addition, it is not necessary for a wooden model ship to secure materials that are expensive and difficult to obtain with good grain lines, and do not perform stacking work, which represents most of the cost. Furthermore, by manufacturing a test equipment unit with sufficient strength, it is no longer necessary to give much importance to the strength of the model ship itself, and auxiliary work such as reinforcement can be omitted. No installation or removal work is required, and waste can be saved and efficient test preparation can be performed. Due to these actions, the manufacturing cost of the model ship and the cost and labor required for model preparation preparation and test preparation work can be significantly reduced.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a test apparatus unit thereof, FIG. 2 is a plan view taken along the line II-II of FIG. 1, and FIG. 4 is an overall side view showing the procedure for fixing the test apparatus unit to the model ship, FIG. 4 is an overall side view showing the state after the test apparatus unit is fixed in FIG. 3, and FIG. 5 is a plan view taken along the line VV of FIG. Is.

In the above drawing, the same reference numerals as those shown in FIGS. 6 to 7 indicate the same members as those shown in FIG.
2 to 15, reference numeral 15 is a stern tube fixing base, 16 is a torque / thrust measuring instrument mounting base, 17 is a motor mounting base, and 18 is a towing metal fitting mounting base. Each of these has a mechanism capable of adjusting the shaft angle, and is installed in test equipment unit boxes 19 and 20 made of aluminum or a rigid plate, an angle member, or the like with bolts and nuts (not shown). In addition, the stern tube 03 and the shaft 04 are the test apparatus unit boxes 19 and 20 and the styrofoam 2.
Install after fixing to the model ship of 3. Here, the unit boxes 19 and 20 are extendable / contractible in the length direction, and are fixed by bolts / nuts 21. Although not shown, the unit boxes 19 and 20 have a structure capable of expanding and contracting in the width and height directions as necessary. Reference numerals 22 and 22 'denote jigs for fixing the unit box and the model ship 25 made of a chemical material such as Styrofoam, and are connected by bolts and nuts (not shown). The inside of the model ship 25 is the test equipment unit box 19,
It is countersunk according to the outer shape of 20, but the others have a solid structure filled with contents. The model ship of the present invention secures strength with the unit boxes 19 and 20, and the styrofoam hull does not require such strength.

Next, as shown in FIG. 3, the unit boxes 19 and 20 and the hull are separated from each other by suspending the unit boxes 19 and 20 using a jig, a crane and the like (not shown). Install. FIG. 4 to FIG. 5 show the state after mounting, and during the mounting work, a dedicated jig is prepared and used for carrying the model ship into the water tank and storing the model ship.

[0010]

According to such a model tank for tank test,
The following effects can be achieved. (1) There is no need for special equipment such as a melting furnace or a casting tank required for the production of paraffin model ships. In addition, it is not necessary to make skilled wooden inner and outer molds and to perform watertight treatment for cooling paraffin with water after casting, and it is an additional work to secure the strength of the ship, etc. 60 to 70% of the total cost These operations, which occupy an area, can be eliminated. (2) The number of man-hours and costs required for securing a high-quality and expensive material required for the production of a wooden model ship, cutting out the material, and laminating work are not necessary. (3) By manufacturing the test apparatus unit, the test preparation cost can be reduced and the work efficiency can be improved. (4) As the material such as styrofoam, a commercially available product can be used, and it is easily available and inexpensive. In addition, it is lightweight, has good workability, and has excellent workability with an NC shaving machine. (5) Due to the above advantages, the conventional model ship manufacturing cost can be significantly reduced.

In short, according to the present invention, a hull shape model is provided with a single or a plurality of test device units each having a towing rod, a self-propelled motor, a measuring instrument and the like necessary for conducting a tank test as standard equipment on a reinforcing frame. Since it is detachably fitted in the vertical recess extending over almost the entire length of the vehicle, the towing rod, self-propelled motor, measuring instrument, etc. necessary for testing propulsion performance and seaworthiness performance are made of aluminum or steel plate. Low cost to equip the manufactured box as a standard equipment and to manufacture it as a test equipment unit with sufficient strength, to attach and fix the shape of the hull made of chemical materials such as urethane, styrofoam, and Chemiwood to save labor and labor. The present invention is extremely useful industrially because a model ship for tank test can be obtained economically.

[Brief description of drawings]

FIG. 1 is a side view showing a test apparatus unit according to an embodiment of the present invention.

FIG. 2 is a plan view taken along the line II-II of FIG.

FIG. 3 is an overall side view showing a procedure for fixing the units of FIGS. 1 and 2 to a model ship.

FIG. 4 is an overall side view showing a state after fixing the test apparatus unit in FIG.

5 is a plan view taken along the line VV of FIG.

FIG. 6 is a vertical sectional view showing a conventional model tank for tank test.

FIG. 7 is a plan view of FIG. 6;

[Explanation of symbols]

 01 Model ship 02 Propeller 03 Stern tube 04 Shaft 05 Joint 06 Torque / Thrust measuring instrument 07 Self-propelled motor 08 Towing metal fittings 09 Towing rod 010 Ballast weight 011 Towing clamp 012 Reinforcing material 013 Towing bulk guide metal fittings 014 Pedestal 16 Torque / thrust measuring instrument mounting pedestal 17 Motor mounting pedestal 18 Towing metal fitting mounting pedestal 19 Unit box 20 Unit box 21 Bolts / nuts 22,22 'Fixing jig 23 Styrofoam 24 Longitudinal recess 25 Model ship

Claims (1)

[Claims] 1. A single or a plurality of test device units, each of which is equipped with a towing rod, a self-propelled motor, a measuring instrument, etc., necessary for conducting a tank test as a standard on a reinforcing frame, extending over substantially the entire length of the hull shape model. A model tank for aquarium test, which is detachably fitted in a longitudinal recess.