JP2001174363A - Measurement probe orientation device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] Small and simple measurement that can perform high-accuracy measurement tests even in a local narrow airflow without being affected by the spatial unevenness of the flow field in a wind tunnel test environment. A measurement probe orientation device is provided. SOLUTION: A strut 3 having one end drivingly coupled to a hollow motor 5 provided on a measurement base, and another end positioned offset from a rotation axis of the hollow motor 5, and a strut 3 The hollow motor 11 is coupled to the other end of the hollow motor 5 and rotatably supports the rotation support member at a position where the rotation axes are orthogonal to each other with respect to the hollow motor 5. While extending along the axis, the central axis is inserted into the hollow portion at a position coincident with the rotation axis of the rotation support member, and the detection unit at the distal end is positioned on the rotation axis of the hollow motor 5. Measurement probe 1
The cylindrical measurement probe casing 14 for projecting 5 from the front end, the hollow motor 11 and the measurement probe casing 1
4 and a cowling 10 covering the rear part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a measurement probe orienting device used for orienting a measurement probe in an arbitrary direction when measuring the velocity or pressure of a flow field with a measurement probe in a wind tunnel facility or the like. It is about.

[0002]

2. Description of the Related Art Conventionally, a measuring probe having a pressure measuring hole at a tip end has been known as a device suitable for measuring a flow field in a wind tunnel test in a wind tunnel facility. There are known a single-hole pitot tube provided with only one pressure measurement hole as an end opening of a pressure conduit, a perforated pitot tube provided with a plurality of pressure measurement holes in order to improve measurement accuracy, and the like. In general, the larger the number of pressure measurement holes, the larger the inflow angle range that can be measured, and the measurement range is about ± 45 degrees for a 5-hole pitot tube and about ± 70 degrees for a 7-hole pitot tube. . The tip of the perforated pitot tube has, for example, a frusto-conical shape in the case of a seven-hole tube, and has one pressure measurement hole on the flat tip surface and six on the conical side surface.

Here, the basic principle of measuring the flow velocity and the direction of the flow by using a measurement probe will be described. When the airflow of the flow field to be measured passes through the pitot tube, the direction of the flow has a correlation with the pressure in the pressure conduit, so that different pressure values are detected in each of the pressure measurement holes. Become. Therefore, if the pressure value of each hole is statistically measured with respect to the flow velocity and the flow direction in several flow patterns, the pitot tube is added to the flow field to be measured based on the data obtained in advance. The flow velocity and the direction of flow in the flow field can be calculated backward from the pressure value of each hole obtained when the gas is installed.

[0004] At this time, since it is necessary to detect a plurality of pressure data, it is necessary to change the direction of the detection unit at the tip of the measurement probe to an arbitrary direction in the flow field to be measured. , The measurement probe is supported by a support member, and is swung around an axis perpendicular to the intermediate portion of the measurement probe or an axis parallel to the measurement probe,
A probe traversing device that translates or moves is provided.

[0005]

However, the measurement using the multi-hole pitot tube is based on the premise that a sufficiently large differential pressure is generated between the pressure measurement holes for a slight fluctuation of the inflow angle. Since the pressure and the flow velocity vector are determined from the above, the arrangement and orientation accuracy of the measurement probe greatly affect the accuracy of the measurement result. Therefore, when directing the measurement probe in any direction, the measurement probe must be moved so that the detection unit at the tip of the measurement probe exactly matches the intended measurement point in space. The person conducting the test had to spend a lot of time to install the measurement probe in addition to the actual measurement time.

In order to remove mechanical errors when moving the measurement probe, the performance of the mechanism of the probe traversing device itself has been conventionally improved. Become larger and more complex,
There is a problem that it becomes expensive.

Further, when the detection section of the measurement probe is to be rotated on the roll axis, the rotation axis does not coincide with the center axis of the measurement probe, so that the entire measurement probe swings with the rotation. Since the position of the detection unit moves, the pressure value of each hole obtained at each position after the movement includes a slight error due to spatial nonuniformity of the flow field to be measured. However, there is a problem that highly accurate measurement cannot be performed.

In the above-described conventional probe traverse device, the direction of the detection unit is changed by moving the measurement probe in parallel and oscillating around an axis perpendicular to an intermediate portion of the measurement probe or an axis parallel to the measurement probe. In order to detect the pressure value in a different manner, a relatively wide movable area is required around the measurement probe in order to secure a measurement range in the flow field to be measured. Therefore, for example, there is a problem that it is not suitable for measurement of a local narrow airflow or the like.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and secures the arrangement and orientation accuracy of a measurement probe at the time of a flow measurement in a wind tunnel test, and provides a flow field in a wind tunnel test environment. A small and simple measurement probe orientation device that enables measurement tests to be performed without being affected by spatial non-uniformity and that can perform high-precision measurement tests even in a local narrow airflow It is intended to provide.

[0010]

In order to achieve the above object, a measuring probe orienting apparatus according to the present invention is provided on a measuring base, and is provided on the measuring base. A probe rotation driving means for rotating the output member, one end drivingly coupled to the output member of the probe rotation driving means, and another end positioned offset from the rotation axis of the output member. A probe pivotally coupled to the support member and the other end of the pivotal support member to rotatably support the pivotal support member at a position where the pivot axes are orthogonal to the output member of the probe pivoting drive means; Support means and a hollow portion extending along the longitudinal direction of the measurement probe accommodating member, the rear part of which is supported by the rotation support member of the probe rotation support means, and the rotation axis of the rotation support member Extends along At the same time, a measurement probe for measuring a flow field is closely inserted into the hollow portion, and the measurement probe is held at a position where the center axis of the measurement probe coincides with the rotation axis of the rotation support member. And a cylindrical measurement probe housing member that projects a detection portion at the tip of the measurement probe from a front end of the measurement probe housing member and is positioned on a rotation axis of an output member of the probe turning drive unit; It is characterized by comprising a probe rotation support means and a cowling member for covering a rear portion of the measurement probe housing member.

In such a measurement probe orientation device,
The turning support member is coupled to the probe turning support means at the other end located at an offset from the turning axis of the output member of the probe turning drive means provided on the measurement base, and the probe turning support means is turned. A measurement probe housing member whose rear part is supported by a pivotally supporting member that movably supports extends along a pivot axis of the pivotally supporting member and a hollow portion that extends along its longitudinal direction. The measurement probe is inserted closely, and the measurement probe housing member protrudes the detection section at the front end of the measurement probe from the front end, so that there is an element that disturbs airflow around the detection section at the front end of the measurement probe. Since the probe rotation supporting means and the rear part of the measurement probe accommodating member are covered by the cowling member, they do not affect the airflow of the flow field to be measured. , It is possible to carry out measurement with high accuracy.

In this measuring probe orientation device, the rear portion is supported by a rotation support member rotatably supported by probe rotation support means, and extends along the rotation axis of the rotation support member. Since the existing measurement probe holding member holds the measurement probe at a position where the center axis of the measurement probe and the rotation axis of the rotation support member coincide with each other, the measurement probe and the rotation axis of the rotation support member are measured. Since the center axis of the probe coincides with the center axis of the probe, when the rotation support member is rotated around the axis of rotation, the measurement probe can be accurately rolled around the center axis of the measurement probe without swinging. Rotate.

Further, in this measurement probe orientation device, the rotation support member is located at a position where the rotation axis is orthogonal to the output member of the probe rotation drive means provided on the measurement base. The measurement probe is located at a position where the rotation axis of the member coincides with the center axis, and the detection unit at the tip of the measurement probe is located on the rotation axis of the output member of the probe turning drive means. Therefore, the rotation axis of the output member is remote-controlled by the rotation of the output member by the operation of the probe turning drive means without the detection unit at the tip of the measurement probe moving up, down, left, right, or the circumferential direction. A pivot support member, a probe pivot support means coupled to the other end of the pivot support member and supporting the pivot support member, and a measuring probe having a rear portion supported by the pivot support member. The probe accommodating member, the measuring probe fitted into the hollow portion of the measuring probe accommodating member, and the cowling member covering the probe rotation support means and the rear portion of the measuring probe accommodating member are integrally formed with high precision. Rotate the yaw axis.

Therefore, according to the measurement probe orienting device of the present invention, even if the measurement probe is rotated in the roll axis and the yaw axis for flow measurement in the flow field to be measured, the tip of the measurement probe can be used. High precision measurement that can be maintained at the position of the test point desired by the tester without moving the detection part of the section, so that the effects of spatial unevenness of the flow field in the wind tunnel test environment are not a problem Testing can be performed.

Further, according to the measuring probe orientation apparatus of the present invention, a compact and simple structure that enables only rotation about two axes perpendicular to each other makes the mechanism mechanically complex and large. The measurement probe traverse device of the above can perform high-precision measurement even in a local narrow airflow where measurement is difficult.

In the measurement probe orienting device of the present invention, the measurement probe housing member is provided on the measurement probe housing member and engages with the probe rotation support means to measure the measurement probe around the rotation axis of the measurement probe housing member. A rotation preventing member for preventing the rotation of the probe accommodating member may be provided inside the cowling member, and if such a rotation preventing member is provided, when the roll axis rotation of the measurement probe is not necessary, In addition, unexpected roll axis rotation can be prevented.

Further, in the measurement probe orienting device of the present invention, the probe rotation support means has a probe rotation drive means for rotating the rotation support member about a rotation axis of the rotation support member. If the probe rotation drive means is provided, the roll axis rotation of the measurement probe can be performed by remote control by the operation thereof.

Further, in the measurement probe orientation device of the present invention, the probe rotation support means can be detached,
The other end of the turning support member may be coupled to the turning support member. In this case, the probe turning support means for supporting the turning support member, and the measurement probe housing having the rear portion supported by the turning support member A measuring base having a member, a measuring probe fitted into a hollow portion of the measuring probe housing member, and a cowling member covering the probe rotation support means and a rear portion of the measuring probe housing member; Since it is possible to remove it from the support member, the measurement part is attached to the existing measurement probe / traverse device, and measurement at many measurement points in the flow field can be remotely controlled while securing the attachment accuracy of the measurement probe. It can be carried out.

In the measurement probe orienting device according to the present invention, the measurement probe may have one or a plurality of pressure measurement holes in the detection section, or may be a hot-wire anemometer. good.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. here,
FIG. 1 is a longitudinal sectional view taken along line II of FIG. 2 showing one embodiment of a measurement probe orientation device of the present invention. FIG. 2 is a plan view showing the measurement probe orientation device of the above embodiment. FIG. 4 is a front view showing the measurement probe orienting apparatus of the embodiment, and FIG.
Is a side view showing the measurement probe orientation device of the above embodiment,
FIG. 5 is a perspective view showing the measurement probe orienting device of the above embodiment, and FIG. 6 (a) is an enlarged side view showing a detection portion at the tip of the measurement probe of the measurement probe orienting device of the above embodiment, and FIG. 7) is an enlarged front view showing the detection unit at the tip of the measurement probe, and FIG. 7 is an exploded perspective view showing a roll axis rotating mechanism of the measurement unit of the measurement probe orientation device of the above embodiment.

In the following description of the embodiment, the directions of up, down, left, right, front and rear are based on the orientation of the apparatus of the embodiment shown in FIGS. That is, in the following description, the vertical direction is the vertical direction in FIGS. 1 and 4, the left direction is the downward direction in FIG. 2 and the right direction in FIG. The upper direction, the left direction in FIG. 3, and the front-back direction mean the left-right direction in FIGS.

The measuring probe orienting apparatus of this embodiment comprises a measuring unit 1, a measuring base 2, and a strut 3 as a turning support member, as shown in the above-mentioned figures. 2 has a substantially cylindrical shape as a whole, and has a motor housing 5a and a shaft support 8a.

In the motor housing 5a, a hollow motor 5 constituting the probe turning drive means is arranged such that a hollow output shaft (not shown) of the motor extends vertically.
A pair of ball bearings 9 are fixedly mounted via the motor bracket 6 in the shaft support 8a, and the motor housing 5a is mounted in the measurement base 2.
The shaft 8 as an output member constituting the probe turning drive means is also accommodated over the shaft support portion 8a. The shaft 8 is tightly fitted into the hollow output shaft of the hollow motor 5, and has a lower end portion drivingly connected to a flange 7 provided on the output shaft of the hollow motor 5. The part is connected to a joint 4b fixed to a lower end 3b as one end of the strut 3 as a turning support member.

The strut 3 has the lower end 3b which is curved with respect to the intermediate portion and extends vertically, and which is curved with respect to the intermediate portion in a direction opposite to the lower end 3b and extends vertically. And an intermediate portion between the upper and lower ends 3a and 3b, which extends obliquely with respect to the rotation axis A1 of the shaft 8 extending in the vertical direction. The joint 4a is fixed to the upper end 3a of the strut 3 and the measuring unit 1 is connected to the joint 4a. Here, the pair of ball bearings 9 rotates the shaft 8 around the rotation axis A1 so that the bending moment applied to the shaft 8 supporting the measuring unit 1 via the strut 3 does not directly reach the hollow motor 5. This allows the strut 3 and the measuring unit 1 to rotate freely by operating the hollow motor 5.
To rotate or swing around the rotation axis A1 to rotate the measurement probe 15 described later in the yaw axis.

The measuring section 1 has a lower fixed plate 13a connected to the upper end 3a of the strut 3 via a joint 4a, and a front fixed plate 13b positioned at a right angle to the lower fixed plate 13a. L-shaped motor bracket 13
And a hollow motor 11 as probe rotation support means and probe rotation drive means fixedly mounted on the front fixed plate 13b of the motor bracket 13. The front fixed plate 13b of the motor bracket 13 has , Hollow motor 1
A circular opening 13c whose center coincides with the center axis A2 of one hollow output shaft 11a is formed.

The joint 4a and the lower fixing plate 13a of the motor bracket 13 are provided with a positioning hole 22a for inserting a positioning pin 23 and a positioning hole 22a for fitting the positioning pin 23, in addition to a hole for a screw member for coupling with each other. A screw hole 22b for screwing the pin 23 is provided, and when the motor bracket 13 is coupled to the joint 4a, the positioning pin 23 screwed into the screw hole 22b fits tightly into the positioning hole 22a. And the motor bracket 1
3, a joint 4a is formed in a hole formed in the lower fixing plate 13a.
Is tightly inserted, so that the mounting position and orientation of the motor bracket 13 with respect to the strut 3 and thus the measurement base 2 are fixed,
Accuracy of the mounting position and orientation is secured.

The hollow motor 11 is attached to the front fixed plate 13b of the motor bracket 13 with the center axis A2 of the output shaft 11a extending in the horizontal direction. Due to the above orientation with respect to the base 2, the center axis A2 extending in the horizontal direction of the output shaft 11a of the hollow motor 11 is orthogonal to the rotation axis A1 extending in the vertical direction of the shaft 8 provided on the measurement base 2. It is located in the position to be.

The measuring section 1 has a cylindrical measuring probe casing 14 as a measuring probe housing member having an inner hollow portion 14a, a rear end joint 14b, and a frusto-conical front end portion 14c. The rear part of the measurement probe casing 14 is closely fitted to the hollow output shaft 11 a of the hollow motor 11. The measurement probe casing 14 is loosely fitted in the opening 13 c of the motor bracket 13 and extends in the horizontal direction, and the joint 14 b at the rear end is connected to the output shaft 11 of the hollow motor 11.
The driving probe is connected to a flange 12 provided at the rear end of the hollow motor 11, whereby the measuring probe casing 14 rotates around the central axis A2 of the output shaft 11 a of the hollow motor 11 by the operation of the hollow motor 11. .

The hollow portion 14a inside the measurement probe casing 14 is connected to the joint 14b from the front end 14c to the rear end along the longitudinal direction of the measurement probe casing 14.
And the hollow portion 14a has a detector 1
6 is tightly fitted, and this measuring probe 15 is attached to the detecting section 16 by the close fitting.
The front end of the hollow motor 11 has a front end protruding from the front end 14c, and the center axis thereof is
The detection portion 16 is fixed to the hollow portion 14a so as to coincide with the center axis A2 of the shaft a and to be positioned on the rotation axis A1 extending in the vertical direction of the shaft 8. As a result, the measurement probe 15 is driven through the measurement probe casing 14 by the operation of the hollow motor 11, and rolls around the center axis A2 of the output shaft 11a of the hollow motor 11 which coincides with the center axis of the measurement probe 15 itself. Rotate.

A positioning pin 2 is attached to a joint 14b provided at the rear end of the measurement probe casing 14.
4 is projected forward, and when the measurement probe casing 14 is attached to the hollow motor 11, the positioning pin 24 is attached to the flange 12 provided at the rear end of the output shaft 11 a of the hollow motor 11. By being closely fitted into a pin hole (not shown), the mounting position (circumferential position) of the measurement probe casing 14 with respect to the output shaft 11a of the hollow motor 11 is fixed, and the accuracy of the mounting position is ensured.

An annular motor stopper 17 as a rotation preventing member is fitted in a middle portion of the measurement probe casing 14 at a position close to the front fixed plate 13b of the motor bracket 13. 1
Reference numeral 7 has screw holes 21b on the upper and side portions, and is fixed to the measurement probe casing 14 by a set screw 19 as a screw member screwed into those screw holes. The motor stopper 17 has a positioning hole 21a through which the positioning pin 20 is inserted, while the front fixing plate 13b of the motor bracket 13 has a screw hole 18, and the positioning pin 20 Motor stopper 1
7 is screwed into the screw hole 18 of the motor bracket 13 after being inserted through the positioning hole 21a of the motor bracket 13 so that the measurement probe casing 14 is hooked to the motor bracket 13 at a predetermined circumferential position. As a result, unnecessary rotation of the measuring probe is prevented.

The measurement probe casing 14 has a front end 1
By having a frusto-conical pointed shape in 4c, the structure has a structure that suppresses the influence on the flow field in a wind tunnel environment. In addition, the measurement probe 15 is tightly inserted into the hollow portion 14a inside the measurement probe casing 14 so as not to form a gap on the contact surface, and the front end portion having the detection portion 16 is moved forward from the front tip portion 14c. It protrudes approximately 2/5 of the entire length.

The measuring section 1 further has a cowling 10 as a cowling member.
Has a substantially elliptical outer shape with a front surface and a rear surface projecting in a convex shape, respectively, and can be divided in the front-rear direction. The hollow motor 11 and the motor bracket are fixed to both side surfaces of the hollow motor 11 by screw members. 13, the motor stopper 17, and the rear part of the measurement probe casing 14 are covered, and the measurement probe casing 14 is made to pass through an opening 10a provided at the front end portion of the front convex shape.

The measuring base 2, struts 3, motor bracket 13, hollow motor 11, motor stopper 1
7. Measurement probe casing 14 and cowling 10
Are integrally and disassembled with each other via the screw member as described above.

In the measurement probe orienting apparatus of this embodiment, the strut 3 is connected to the output shaft of the hollow motor 5 provided on the measurement base 2 by the rotation axis A of the shaft 8.
Another hollow motor 11 is coupled to the upper end 3a, which is positioned offset from 1, via a motor bracket 13, and the hollow motor 11 itself has a hollow support member as a rotation support member that rotatably supports the hollow motor 11. A measurement probe casing 14 whose rear portion is supported by the output shaft 11a extends along a rotation axis A2 of the output shaft 11a of the hollow motor 11 and measures a hollow portion 14a extending along its longitudinal direction. The probe 15 is closely inserted, and the measurement probe casing 14 projects the detection portion 16 at the tip of the measurement probe 15 from the front end portion 14c. There are no elements that disturb the airflow, and the hollow motor 11, the motor bracket 13, and the rear part of the measurement probe casing 14 Including motor stopper 17, since the front and rear surfaces are covered by a cowling 10 which forms the outer shape of the outline oval shape protruding in a convex shape, respectively,
Without affecting the airflow of the flow field to be measured,
High-precision measurement can be performed.

In the measurement probe orienting apparatus of this embodiment, the rear portion is supported by the hollow output shaft 11a of the motor itself rotatably supported by the hollow motor 11, and the output shaft 11a of the output shaft 11a The measurement probe casing 14 extending along the rotation axis A2 is configured to move the measurement probe 15 to the center axis of the measurement probe 15 and to the output shaft 1.
Since the output shaft 11a of the hollow motor 11 is rotated around the rotation axis A2 because the rotation axis A2 of the hollow motor 11 is held at a position that coincides with the rotation axis A2 of the rotation probe 1a, the measurement probe 15 does not swing. The roll axis is rotated around the center axis of the measurement probe 15 with high accuracy.

Further, in the measuring probe orienting apparatus of this embodiment, the position where the rotation axis A1 and the rotation axis A2 of the shaft 8 connected to the hollow motor 5 provided on the measurement base 2 are orthogonal to each other. The output shaft 11a of the hollow motor 11 is located at a position where the rotation axis A2 of the output shaft 11a of the hollow motor 11 is located.
The measurement probe 15 is located at a position where the central axis coincides with the center axis.
Is located on the rotation axis A1 of the shaft 8, so that the detection unit 16 at the tip of the measurement probe 15 does not move in the vertical and horizontal directions or in the circumferential direction.
Is connected to the strut 3 and the upper end 3a of the strut 3 around the rotation axis A1 of the shaft 8 by remote operation by the rotation of the shaft 8 by the operation of the hollow motor 5 provided at A hollow motor 11 supporting the output shaft of the above, a measurement probe casing 14 having a rear portion supported by the output shaft of the hollow motor 11, a measurement probe 15 inserted into a hollow portion 14a of the measurement probe casing 14, and The cowling 10 that covers the hollow motor 11, the motor bracket 13, and the rear part of the measurement probe casing 14 integrally rotates with the yaw axis with high precision.

Therefore, according to the measuring probe orienting apparatus of this embodiment, even if the measuring probe 15 is rotated by the roll axis and the yaw axis for measuring the flow in the flow field to be measured, the measuring probe It is possible to maintain the position of the measurement point desired by the tester without moving the detector 16 at the tip end of the fifteen, so that the influence of the spatial non-uniformity of the flow field in the wind tunnel test environment does not matter. High precision measurement test can be performed.

Further, according to the measuring probe orienting device of this embodiment, the screw hole 21 into which the positioning pin 20 is screwed is inserted.
The motor stopper 17 having a a is fitted to the measurement probe casing 14 by a set screw 19, and the positioning pin 20 is screwed into the screw hole 21 of the motor stopper 17.
a and the positioning pin 20 provided on the motor bracket 13 is screwed into the screw hole 18 for screwing, so that the rotation of the measurement probe casing 14 integrally driven and coupled to the hollow motor 11 can be locked. This makes it possible to prevent unexpected rotation of the measuring unit 1 due to the airflow in the flow field to be measured. In addition, when the tester does not want to rotate the roll shaft, unnecessary rotation of the measuring unit 1 is performed. Can be locked.

Further, according to the measuring probe orienting apparatus of this embodiment, the measuring base 2 having the built-in hollow motor 5, the strut 3 rotatably supported by the measuring base 2, and the upper end of the strut 3 A motor bracket 13 connected to the motor bracket 13 via a joint 4a, a hollow motor 11 fixed to the motor bracket 13, a measurement probe casing 14 drivingly connected to the hollow motor 11, and a measurement probe casing 14 And has a small and simple structure consisting of
In addition, since it has an integrated structure that conforms to the shape of the measurement probe 15, a highly stable mounting accuracy of the measurement probe 15 can be secured. In addition, measurement is difficult with a mechanically complex and large measurement probe / traverse device. A highly accurate measurement test can be performed even in difficult local airflow measurement.

According to the measuring probe orienting apparatus of this embodiment, the measuring base 2 having the built-in hollow motor 5, the strut 3, the motor bracket 13, and the hollow motor 1
1, a motor stopper 17, a measurement probe casing 14 in which a measurement probe 15 is inserted, and a cowling 10.
And a measurement probe casing 14 in which the measurement probe 15 is inserted, and a motor stopper 1
7, the hollow motor 11, the motor bracket 13, and the cowling 11 can be removed from the measurement base 2 and the strut 3, so that the measurement unit 1 can be connected to an existing measurement probe / traverse. Even when measurement is performed by attaching to the device, highly stable attachment accuracy of the measurement probe 15 can be ensured.

Further, according to the measuring probe orientation device of this embodiment, the joint 4a and the motor bracket 13 provided at the upper end 3a of the strut 3 are provided with the positioning holes 22a for inserting the positioning pins 23 and the positioning holes 22a. It has a screw hole 22b for screwing the pin 23, and the positioning pin 23 is connected to the holes 22a, 22b.
In this case, the mounting position of the motor bracket 13 is fixed, the direction of the measuring unit 1 is fixed, and the positioning position of the joint 14b provided at the rear end of the measuring probe casing 14 is provided. Pin 24
Is inserted into a pin hole (not shown) of a flange 12 provided at the rear end of the output shaft 11a of the hollow motor 11, so that the circumferential mounting position of the measurement probe casing 14 with respect to the output shaft 11a of the hollow motor 11 is fixed. In addition, since the mounting position accuracy is ensured, the reproducibility of the measurement test in the measurement experiment can be ensured when disassembling and reassembling the measurement probe orientation device of this embodiment.

Although the present invention has been described with reference to the illustrated examples, the present invention is not limited to the above examples. For example, the apparatus of the above embodiment may be installed upside down from the state shown in the wind tunnel test environment. Or a probe rotation supporting means for providing a bearing in place of the hollow motor 11 to enable manual rotation of the roll axis of the measurement probe 15, or the measurement probe 15 inserted into the measurement probe casing 14. It is possible for a person skilled in the art to appropriately change within the scope of the claims, for example, a 5-hole pitot tube or a hot-wire velocimeter instead of the 7-hole pitot tube having the seven measurement holes 16a. .

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a measurement probe orientation device of the present invention, taken along line II of FIG. 2;

FIG. 2 is a plan view showing the measurement probe orientation device of the embodiment.

FIG. 3 is a front view showing the measurement probe orientation device of the embodiment.

FIG. 4 is a side view showing the measurement probe orientation device of the embodiment.

FIG. 5 is a perspective view showing the measurement probe orientation device of the embodiment.

FIG. 6A is an enlarged side view showing a detection unit at the tip of a measurement probe of the measurement probe orienting device of the embodiment,
(B) is an enlarged front view showing the detection unit at the tip of the measurement probe.

FIG. 7 is an exploded perspective view showing a roll axis rotating mechanism of a measuring unit of the measuring probe orienting apparatus of the embodiment.

[Explanation of symbols]

 1 Measurement unit 2 Measurement base 3 Strut 3a Upper end 3b Lower end 4a, 4b Joint 5 Hollow motor 6 Motor bracket 7 Flange 8 Shaft 8a Shaft accommodating part 9 Ball bearing 10 Cowling 10a Opening 11 Hollow motor 11a Output shaft 12 flange 13 Motor bracket 13a Lower fixed plate 13b Front fixed plate 13c Opening 14 Measurement probe casing 14a Hollow portion 14b Joint 14c Front end 15 Measurement probe 16 Detector 16a Measurement hole 17 Motor stopper 18 Screw hole 19 Set screw 20, 23, 24 Positioning Pins 21a, 22a Positioning holes 21b, 22b Screw holes

Claims (6)

[Claims] 1. A measurement base (2); a probe turning drive means (5) provided on the measurement base for turning an output member (8) with respect to the measurement base; A pivot support member (3) having one end (3b) drivingly coupled to the output member of the means, and another end (3a) positioned offset from the axis of rotation of the output member; A probe rotation support means (11) coupled to the other end of the probe rotation support means for rotatably supporting the rotation support member (12) at a position where the rotation axes are orthogonal to the output member of the probe rotation drive means. A hollow portion (14a) extending along the longitudinal direction of the measurement probe housing member, the rear portion of which is supported by the rotation support member of the probe rotation support means, and the rotation of the rotation support member. Extending along the axis and the hollow portion In the flow field of the measurement of the measuring probe (15) is inserted tightly fitting to hold the measurement probe to a position where the center axis and the pivotal support member of the rotation axis of the measurement probe matches
A cylindrical measuring probe housing which protrudes a detecting portion (16) at the tip of the measuring probe (15) from the front end of the measuring probe housing member and is positioned on the rotation axis of the output member of the probe turning drive means. A measurement probe orienting apparatus, comprising: a member (14); and a cowling member (10) that covers the probe rotation support means and a rear portion of the measurement probe housing member. 2. A rotation provided on the measurement probe housing member and engaging the probe rotation support means to prevent rotation of the measurement probe housing member around a rotation axis of the measurement probe housing member. Motion prevention member (1
7. The measurement probe orienting device according to claim 1, wherein 7) is provided inside the cowling member. 3. The probe rotation support means has a probe rotation drive means (11) for rotating the rotation support member about a rotation axis of the rotation support member. 3. The measurement probe orientation device according to claim 1, wherein 4. The probe rotation support means according to claim 1, wherein the probe rotation support means is detachably connected to the other end of the rotation support member. Measurement probe orientation device. 5. The measurement probe orientation device according to claim 1, wherein the measurement probe has one or a plurality of pressure measurement holes in the detection unit. 6. The measurement probe orientation device according to claim 1, wherein the measurement probe is a hot-wire anemometer.