JPH0222889B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wind tunnel device that can mainly measure and experiment the effects and phenomena of wind pressure, wind direction, wind speed, etc. on buildings, automobiles, etc. It is an object of the present invention to provide a wind tunnel device having a traverse that minimizes the projected area, simplifies the traverse device, and eliminates the influence of the large projected area.

Conventional wind tunnel equipment, as shown in the wind tunnel equipment according to Japanese Utility Model Publication No. 56-34270, is equipped with a traverse frame that traverses the wind tunnel equipment, and a terminal movable mechanism of the measurement equipment is attached to the frame. Move the traverse in the length direction of the wind tunnel, that is, in the direction of the wind flow,
In addition, a movable mechanism is used to move measurement equipment across the wind and in the height direction of the wind tunnel in order to measure the effects of wind on buildings and other objects, but conventional wind tunnels do not As for the device, as can be seen from Figure 1 of the above-mentioned Japanese Utility Model Publication No. 56-34270, since the traverse is provided transversely to the direction of wind flow, the area that blocks the wind by this traverse, In other words, the projected area becomes larger,
Therefore, the traverse has a large resistance due to the passing wind, so the measured value may change due to the resistance of the traverse itself, or this resistance may appear as a deflection of the tip. Therefore, when precise measurements are to be made, the traverse itself must be of such a size that resistance to the passing wind can be ignored, and the traverse must be sufficiently strong. As can be seen from Fig. 3, the measurement range is large compared to the size of the terminal movable mechanism and its measurement equipment for the traverse wind flow.
Moreover, stable equipment is required. When such a large traverse is used, the projected area naturally becomes large, and a structure must be used that can sufficiently withstand resistance to the passing wind. However, in order to move this traverse, the motor capacity must be large, and in order to prevent the traverse from deflecting, the traverse support material in the transverse direction must be large. do not have.

The present invention solves the problems caused by the conventional traverse installed across the wind tunnel, minimizes the projected area of the passing wind by the traverse, and simplifies the structure of the traverse and improves the measurement tip. Minimize the positional accuracy and runout of the parts,
The aim is to provide a traverse that is easy to handle and can be precisely measured.

The gist of the present invention is that, in order to achieve such an object, a traverse, which was conventionally provided across the wind tunnel, is provided inside the wind tunnel in parallel to the length direction of the wind tunnel, that is, the direction in which the wind flows. The key point is that the projected area for the passing wind is minimized to reduce the resistance caused by the passing wind.

To further explain the details of the present invention based on the illustrated embodiment, the one shown in FIG. 1 is a conventional wind tunnel apparatus in which a traverse is provided inside the wind tunnel parallel to the flow direction of the wind. A partially cut-away side view is shown, and FIG. 2 is a front view of the wind tunnel apparatus seen from the entrance direction. In FIGS. 1 and 2, 1 is a wind tunnel, and a traverse shown as 2 in the figures is provided in the direction in which the wind flows, that is, in the length direction of the wind tunnel apparatus. The traverse 2 shown here is a long rail-like object provided in the length direction of the wind tunnel 1.
The traverse 2 is connected to a moving means 4 installed inside the wind tunnel ceiling 3, so that the moving means 4 can move in a direction across the wind tunnel 1. Further, in the figure, reference numeral 5 provided on the traverse 2 is a terminal movable mechanism, and a measuring device 6 is provided at the terminal of the movable mechanism 5 in the same manner as in a conventional wind tunnel apparatus.

To explain the details of such a wind tunnel device more specifically, in the one shown in FIG. 1, one H-shaped running rail 7 is set as a traverse 2 in the length direction of the wind tunnel 1,
The support part 8 of the terminal movable mechanism 5 is related to this running rail 7, and the terminal movable mechanism 5 and the rail 7 are connected to each other.
Using this rail 7, the terminal movable mechanism 5 can be slid in the longitudinal direction. What is shown in FIG. 3 and FIG. 4 shows the details, and the terminal part movable mechanism support part 8 is externally fitted to the running rail 7, and the terminal part movable mechanism support part 8 is fitted on the running rail 7 side in the longitudinal direction of the running rail 7. A rack 9 is provided on the rack 9, and a pinion 10 that engages with the rack 9 is attached to the support part side.The pinion 10 is equipped with a pulse motor 1 for moving the traveling rail 7 in the length direction.
1 is provided, and a guide rail receiver 13 that is slidable and clamps the protrusions 12, 12 of the support part 8 is associated with the protrusions 12, 12 provided on the inside and outside of the running rail 7. Driven by the motor 11, the rack 9 and pinion 10 are engaged so that the support section 8 can run in the longitudinal direction of the rail 7. At this time, the entire support section 8 is supported against the vertical load by the guide rail receiver 13 described above. supported and allowed to slide. For such terminal part movable mechanism support part 8, a movable part 14 in the figure that can be driven in the vertical direction and an arm 15 extending from the lower end of the movable part 14 are provided at the tip. A measuring device 6 etc. is attached, and the pulse motor 11 operates to move the measuring device 6 along the length direction of the rail 7 of the traverse 2.
It is also possible to move the wind tunnel up and down by the movable part 14. Of course, the method of vertical movement, the longitudinal direction of the traverse 2, and the direction across the wind tunnel are not limited to the above-mentioned examples, and other conventional devices and methods may be used. Of course. The traverse 2 is made movable in the transverse direction of the wind tunnel 1 by means of a moving means 4 provided inside the ceiling 3, so that the measurement equipment 6 can be moved in the three dimensions of X, Y, and Z. It allows movement. The moving means 4 for traversing the wind tunnel 1 of the traverse 2 shown here is a first
In the figure, a support member 17 is installed upright from the traverse 2 through a slit 16 provided in the ceiling 3 of the wind tunnel 1 in a direction transverse to the wind tunnel 1, and a bearing 18 is provided at the upper end of the support member 17. 18, a common movable shaft 19 is set in the length direction of the traverse 2, and the movable shaft 19 is rotated by a servo motor 23 for wind tunnel crossing, which is connected to an appropriate position of the movable shaft 19, to traverse the traverse 2. It makes it possible.
As a movement method for moving the traverse 2 by rotation of the movable shaft 19, a rack 21 is provided on a rail 20 provided on the upper surface inside the wind tunnel ceiling 3 so as to cross the ceiling 3, and A pinion 22 on the movable shaft 19 side is associated with the movable shaft 19 so as to be movable. This drive-related mechanism approximates the relationship between the pinion 10 of the terminal movable mechanism 5 and the rack 9 provided on the running rail 7 of the traverse 2. When the servo motor 23 of the movable shaft 19 is moved, the pinion 22 on the movable shaft 19 side and the rack 21 on the rail 20 side engage, causing the movable shaft 19 to travel in the direction across the wind tunnel. , the traverse 2, which is constructed via supporting materials, is moved in the transverse direction of the wind tunnel 1. In addition, a traverse moving means 4 as shown in FIG. 1 is provided inside these ceiling parts 3.
On the other hand, if such a long movable shaft 19 is not provided and a small movable shaft is further divided, or if a servo motor or other drive motor is installed at the upper end of the support member 17 of the traverse 2, the movable shaft is not provided. It is possible to freely adopt a format in which each traverse is provided one by one and the entire traverse can be driven by a servomotor or other moving device depending on the number of supporting members. Movable axis 1
Although 9 is omitted in this manner, the number of drive devices such as servo motors is increased, but since there is no movable axis for various operations on the ceiling, it becomes easier even when the traverse is moving. In addition, this moving means 4 does not fix the traverse 2 via a support member 17 that passes through a slit 16 provided in the ceiling 3, but instead fixes the traverse 2 within the ceiling 3 or on the lower surface of the ceiling 3 to maximize the projected area. There is no problem in appropriately adopting a structure in which the above-mentioned moving means 4 is incorporated to make the traverse 2 movable in a reduced size state. In addition, 2 in the figure
4 is a housing portion for the movable mechanism 5 of the traverse 2, and is provided in a recessed manner on the side of the wind tunnel.

As described above, the wind tunnel apparatus according to the present invention has a traverse in which the terminal movable mechanism of the measuring device is slidably attached, and the traverse is installed parallel to the length direction of the wind tunnel, and the traverse is installed inside the wind tunnel ceiling to traverse the wind tunnel. Since the moving means for moving in the direction is provided and associated with the traverse, the traverse of the wind tunnel device of the present invention has a smaller projected area of the traverse in the cross-sectional area of the wind flow in the wind tunnel than in conventional wind tunnel devices. This allows the resistance to the wind passing through the traverse to be minimized, and the flow of the wind due to the traverse itself is not disturbed. Therefore, the entire traverse can be made lightweight and small, and measurement accuracy is further improved. Therefore, even when the wind speed increases, the traverse does not vibrate significantly due to the wind pressure, so the tip of the measuring instrument installed on the traverse will not shake much, and precise measurements can be made freely. , the motors used to move these traverses and drive the measuring instruments are small, and precise measurements can be made even if the capacity of the control circuit is small.Also, since the traverse is provided in the length direction of the wind tunnel, the influence of wind can be taken into consideration. Since it is possible to select a part that can sufficiently withstand deflection due to wind pressure and its own weight without having to bend, the precision of the machine increases and installation and maintenance become easier.

The traverse rail can be easily extended in the length direction of the wind tunnel, and the movable mechanism at the end is concentrated in one place relative to the traverse, and is exposed inside the wind tunnel, making inspection and maintenance difficult. It is easy to do, and rail replacement etc. can be done easily. A particularly great advantage is that the projected area of the traverse is small, so each piece of equipment can be used as a common structure for wind tunnels ranging from large to small. In conventional wind tunnel apparatuses, these drive units are almost always housed inside the exterior, making maintenance and inspection of the interior time-consuming.

In addition, the traverse in the wind tunnel apparatus of the present invention has a structure in which the supporting part against the wind flow is strong and the deflection of the tip is reduced.
In order to enable precise measurements and eliminate vibrations of the terminal movable mechanism, especially due to wind pressure, the depth of the support section should be made long relative to the traverse rail, so that the measurement equipment installed in front of the support section can be easily moved. The upward reaction force at the rear against the downward load can be reduced, and the problem of this reaction force on driving can be solved. In conventional wind tunnel devices, there is a limit to the depth of the terminal movable mechanism that supports the measurement equipment, which causes the tip of the measurement equipment to swing.

Because the projected area is small and the support of the movable mechanism at the end of the measuring device can be set long with respect to the rail, there is less vibration at the end of the measuring device, making it possible to move at high speed. Not only can the measurement time be shortened, but it can also be moved while measuring, making it possible to follow streamlines.

[Brief explanation of drawings]

FIG. 1 is a side view of an embodiment of the wind tunnel apparatus according to the present invention, FIG. 2 is a front view of FIG. 1, FIG. 3 is a front view of a traverse, and FIG. 4 is a side view of FIG. 3. 1...Wind tunnel, 2...Traverse, 3...Ceiling part, 4...Transportation means, 5...Terminal part movable mechanism, 6
... Measuring equipment, 7 ... Traveling rail, 8 ... Support part, 9 ... Rack, 10 ... Pinion, 11 ...
Pulse motor, 12... Projection, 13... Guide rail holder, 14... Movable part, 15... Arm, 1
6... Slit, 17... Support material, 18... Bearing, 19... Movable shaft, 20... Rail, 21...
Rack, 22...pinion, 23...servo motor, 24...storage section.

Claims (1)

[Claims] 1. A rail-shaped traverse to which the terminal movable mechanism of the measurement equipment is slidably attached is provided parallel to the length direction of the wind tunnel, and a moving means for moving the traverse in the wind tunnel cross direction is provided inside the wind tunnel ceiling. A wind tunnel device that is associated with a built-in traverse.