JPH0131944Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a wind tunnel test device that performs tests by applying aerodynamic force to a specimen.

An air passage frame 2 to which a specimen 1 is attached as shown in FIG. 1 is used in experiments using a blow-out type wind tunnel. This air passage frame 2 is provided with a rail 4 on the floor in front of the air outlet 3 so that it can be connected to the air outlet 3 of the wind tunnel, and the air passage frame 2 moves on the rail 4.

The test piece 1 is attached to this air passage frame 2 and the wind blown out from the air outlet 3 of the wind tunnel is applied to it. New scaffolding, etc. must be installed. For this reason, it takes a lot of time to attach the specimen 1.

The present invention eliminates these drawbacks and includes an air outlet of a wind tunnel and an air passage frame that is removably connected to the air outlet to form a continuous air passage. In a wind tunnel test device in which a test piece is attached to the wind tunnel to apply aerodynamic force, at least a part of the bottom plate of the air passage frame is movable up and down, and the bottom plate is placed on the floor in front of the air outlet of the wind tunnel. It is characterized by a buried elevator that moves up and down the possible parts, and its purpose is to provide a wind tunnel test device that facilitates the installation and removal of specimens.

Hereinafter, an embodiment of the present invention shown in FIGS. 2 and 3 will be described.

11 is a pit provided on the floor 5 in front of the air outlet 3 of the wind tunnel, and is located between the rails 4. An elevator 12 is disposed within the pit 11, and a top plate 13 is attached to the elevator 12 so that it is flush with the floor 5 when stored.

The central rectangular portion 2b of the bottom plate 2a of the air passage frame 2 is separated from the other portions of the bottom plate 2a, and only that portion can move up and down.

The central rectangular portion 2b has a convex portion 2c on its lower surface, which engages with a concave portion 13a provided in the top plate 13, thereby preventing the two from shifting in the lateral direction.

Now, as shown in FIG. 2, the air passage frame 2 is moved along the rail 4 and positioned above the front pit 11 of the air outlet (reference numeral 3 in FIG. 1) of the wind tunnel (not shown).

Next, the elevator 12 is driven to raise the top plate 13, and its recess 13a is engaged with the convex part 2c on the lower surface of the center square part 2b of the bottom plate 2a of the air passage frame 2, so that the center Raise the square part 2b.

That is, by using the central rectangular portion 2b as a scaffold, even when the specimen (reference numeral 1 in FIG. 1) is to be attached to a high part of the air passage frame 2, it can be done extremely easily.

[Brief explanation of the drawing]

Fig. 1 is a diagram of a conventional wind tunnel test device, Fig. 2 is a diagram showing the main parts of the device showing an embodiment of the present invention, and Fig. 3 is a diagram showing the main parts of the device showing an embodiment of the present invention.
The figure is a diagram showing a state in which the elevator shown in FIG. 2 is driven. 1: Specimen, 2: Air passage frame, 2a: Bottom plate, 2
b: Center square part, 3: Air outlet, 4: Rail, 5:
Floor surface, 11: pit, 12: elevator, 13: top plate.

Claims (1)

[Scope of utility model registration request] It is equipped with an air outlet of the wind tunnel and an air passage frame that is detachably connected to the air outlet and forms a continuous air passage,
In a wind tunnel test device in which a test specimen is mounted inside an air passage frame to apply aerodynamic force, at least a part of the bottom plate of the air passage frame is movable up and down, and a A wind tunnel test device characterized by having an elevator embedded therein that moves a vertically movable portion of the bottom plate up and down.