CN210719628U - A gimbal mirror suitable for low turbulence and low speed wind tunnel - Google Patents

Abstract

The utility model discloses a universal mirror adapted to low turbulence low speed wind tunnel, which comprises a reflective lens, a fixed bracket, and a universal device which can adjust and fix the reflective lens to meet the requirement that the reflected light and the original light are at the same horizontal position in the low turbulence low speed wind tunnel test, wherein the reflective lens is fixed on the universal device which is connected with the fixed bracket; the test closing section comprises a test closing section and a test closing section, and is characterized by also comprising a C-shaped clamp fixed on the outer edge of the test closing section, wherein a fixed support is fixed with the C-shaped clamp; compared with the prior art: the angle of the reflective lens is adjusted flexibly, the installation is simple, the fixing effect is good, the position is moved conveniently, the pollution and other beneficial effects are avoided to the test section, once the fixing support is installed, the whole course of the test does not need to be moved, and the position and the angle of the universal mirror can be adjusted according to the requirements of different test working conditions.

Description

A gimbal mirror suitable for low turbulence and low speed wind tunnel

technical field

The utility model relates to a universal mirror adapted to a low-turbulence and low-speed wind tunnel.

Background technique

In the PIV (Particle Image Velocimetry, particle image velocimetry) test in the low-turbulence and low-speed wind tunnel, the existing method of using the reflector is to directly fix it on the outer wall of the closed section of the test with adhesive tape, and by adding tape around the reflector Pad paper with different heights to adjust its angle, so as to achieve the effect that the reflected light and the original light are in the same horizontal position. Under this method, the angle of the reflector is very easy to change, and during the test, the efficiency of frequently adjusting the reflector is very low. It will also affect the accuracy of the test data. The main reasons are: the weakness of the adhesive tape and the padded paper, especially the vibration generated by the wind tunnel at high wind speeds has a great influence on the angle of the reflector, and the adhesive tape is pasted. The method and cleaning of the adhesive tape will also have a great impact on the need for frequent lens replacement.

Utility model content

In view of the above, the present invention provides a gimbal mirror adapted to a low-turbulence and low-speed wind tunnel, so as to solve at least one problem existing in the above-mentioned prior art.

According to one aspect of the present invention, a universal mirror adapted to a low-turbulence and low-speed wind tunnel is provided, which includes a reflective lens, a fixed bracket, and an adjustable and fixed reflective lens to meet the reflected light in a low-turbulence and low-speed wind tunnel test. A universal device in the same horizontal position as the original light, the reflective lens is fixed on the universal device, and the universal device is connected with a fixed bracket; it also includes a C-clamp fixed on the outer edge of the closed section of the test, and the fixed bracket is fixed with the C-clip; The universal device includes a lens holder, a spherical hinge, and a fixing component. The front of the lens holder is installed with a reflective lens, and the back is connected with the spherical hinge. The angle of the reflective lens can be adjusted through the spherical hinge. The spherical hinge is fixed by the fixing component and the fixing bracket. The fixed component can move horizontally on the fixed bracket to adjust the horizontal position of the reflective lens.

Preferably, the spherical hinge includes a spherical body connecting end and a housing connecting end, the housing connecting end is provided with a plurality of fixing holes, the inner wall of the fixing hole is provided with an internal thread, and the housing connecting end can be inserted into the fixing hole by inserting a butterfly Bolts secure the ball connection end.

Preferably, the fixing bracket includes a plurality of first installation brackets and a plurality of second installation brackets, the first installation bracket is fixed to the C-clamp, the second installation bracket is fixed to the fixing component, and both ends of the second installation bracket are connected to the first installation bracket. The mounting bracket is fixed, the first mounting bracket is provided with a first mounting hole, and the second mounting bracket is provided with a second mounting hole.

Preferably, the C-shaped clip includes two legs, and the length of the legs is 2-3cm. A rubber washer and a first wing nut, the back column screw passes through the first mounting hole, and the first mounting bracket is fixed between the first limit stop piece and the first rubber washer through the first wing nut.

Preferably, the fixing assembly includes a second limit stopper, a bolt, a second rubber gasket, and a second wing nut, the bolt is connected to the connecting end of the housing, the second limit stopper is located on the bolt, and the second installation The holes pass through the bolts, and the second mounting bracket is fixed through the cooperation of the second rubber gasket, the second wing nut and the second limit block.

Preferably, there are four C-shaped clips.

Preferably, there are two first installation brackets, and the first installation holes are located at both ends of the first installation bracket.

Preferably, there are two second mounting brackets, the second mounting holes are elongated, and the fixing assembly can move horizontally in the second mounting holes.

The beneficial effects of the utility model are as follows: the C-shaped clip is fixed with the outer edge of the test closed section at a suitable position, the fixed bracket is fixed with the C-shaped clip, the fixed component is fixed with the fixed bracket, the horizontal position of the reflective lens can be adjusted, and the reflective lens is fixed through the spherical hinge. Lens, the angle of the reflective lens can be adjusted; the angle of the reflective lens can be adjusted flexibly, the installation is simple, the fixing effect is good, the position is easy to move, and it has beneficial effects such as avoiding pollution to the test section. It is necessary to adjust the position and angle of the gimbal mirror.

Description of drawings

Figure 1 is a schematic diagram of the installation of the gimbal mirror fixing bracket;

Fig. 2 is the longitudinal section structure diagram of C-shaped clip;

Figure 3 is a schematic diagram of a fixed bracket;

Fig. 4 is A-A sectional view in Fig. 3;

FIG. 5 is a longitudinal cross-sectional structural view of the universal device.

In the figure, 1. Reflective lens, 2. Lens tray, 3. Ball connection end, 4. Butterfly bolt, 5. Fixing hole, 6. Housing connection end, 7. First rubber gasket, 8. First Wing nut, 9, Second limit stop, 10, Bolt, 11, Second rubber gasket, 12, Second wing nut, 13, Support foot, 14, Back column screw, 15, First limit stop Sheet, 17, first mounting hole, 19, second mounting hole, 23, test closed section, 24, test model, 25, laser light source.

Detailed ways

The present utility model will be further described below according to the accompanying drawings and some embodiments.

In Figure 1-5, a gimbal mirror suitable for low-turbulence and low-speed wind tunnels includes a reflector 1, a fixing bracket, and an adjustable and fixed reflector 1 to meet the reflected light in the low-turbulence low-speed wind tunnel test The gimbal device is in the same horizontal position as the original light, the reflective lens 1 is fixed on the gimbal device, and the gimbal device is connected to the fixed bracket; it also includes the C-clamp fixed on the outer edge of the test closed section 23, the fixed bracket and the C-clip Fixing; the universal device includes a lens holder 2, a spherical hinge, and a fixed component. The lens holder 2 is installed with a reflective lens 1 on the front, and the back is connected with a spherical hinge. The angle of the reflective lens 1 can be adjusted through the spherical hinge. The spherical hinge is fixed by The component is fixed with the fixed bracket, and the fixed component can move horizontally on the fixed bracket to adjust the horizontal position of the reflective lens 1 .

In this embodiment, the spherical hinge includes a ball connecting end 3 and a housing connecting end 6 . The housing connecting end 6 is provided with a plurality of fixing holes 5 , the inner wall of the fixing hole 5 is provided with internal threads, and the housing connecting end 6 The ball connecting end 3 can be fixed by inserting butterfly bolts 4 into the fixing holes 5 .

In this embodiment, the fixing bracket includes a plurality of first installation brackets and a plurality of second installation brackets, the first installation bracket is fixed with the C-clamp, the second installation bracket is fixed with the fixing component, and both ends of the second installation bracket are fixed Fixed with the first mounting bracket, the first mounting bracket is provided with a first mounting hole 17, and the second mounting bracket is provided with a second mounting hole 19.

In this embodiment, the C-shaped clip includes two legs 13, and the length of the legs 13 is 2-3 cm. The limit stopper 15, the first rubber washer 7 and the first wing nut 8, the back column screw 14 passes through the first installation hole 17, and the first installation bracket is fixed at the first limit through the first wing nut 8 Between the blocking piece 15 and the first rubber gasket 7 .

In this embodiment, the fixing assembly includes a second limit stopper 9, a bolt 10, a second rubber gasket 11, and a second wing nut 12. The bolt 10 is connected to the housing connection end 6, and the second limit The baffle 9 is located on the bolt 10 , the second installation hole 19 passes through the bolt 10 , and the second installation bracket is fixed by the cooperation of the second rubber washer 11 , the second wing nut 12 and the second limiting baffle 9 .

In this embodiment, there are four C-shaped clips; two first mounting brackets are provided, and the first mounting holes 17 are located at both ends of the first mounting bracket; and two second mounting brackets are provided , the second installation hole 19 is a long strip, and the fixing component can move horizontally in the second installation hole 19 .

In this embodiment, the reason why the C-clamp legs 13 are designed to be 2-3 cm is that the C-clamp can be closely attached to the outer edge of the test closure section 23, so that it is difficult to rotate, and the position of the reflective mirror surface is prevented from changing.

In this embodiment, the first installation holes 17 can be of different shapes to improve adaptability; the provision of two second installation brackets ensures a more flexible installation method, which can be used in any reverse direction as required.

In this embodiment, in order to ensure that the fixed bracket has good rigidity and is not prone to bending deformation, channel steel should be used in addition to the rigidity requirements of its steel. The fixed brackets are all composed of channel steel.

In this embodiment, the functions of the first limit blocking pieces 15 are to ensure the installation distance of the fixing bracket, respectively, and the function of the second limit blocking pieces 9 is to ensure the installation distance of the fixed components.

In this embodiment, the functions of the first rubber gasket 7 and the second rubber gasket 11 are to increase the damping and achieve a firmer installation effect.

In the specific implementation of this embodiment: four C-clamps are fixed on the test closing section 23, the first installation hole 17 is fixed with the back column screw 14, and the first installation bracket is fixed on the first limit baffle and the first Between the rubber gaskets 7, the first wing nut 8 can be adjusted to be tightened or loosened. After the fixing bracket is fixed, the bolt is passed through the second installation hole 19 to fix the fixing assembly and the second installation bracket, and the second The mounting bracket is located between the second limit stop piece 9 and the second rubber gasket 11, and can be adjusted to be loosened or tightened through the second wing nut 12 to fix the horizontal position of the fixed component, thereby fixing the horizontal position of the reflective lens 1 ; The ball connecting end and the shell connecting end 6 are locked or opened by the butterfly bolt 4, so that the position of the reflective lens 1 can be adjusted, and the ball connecting end is rotated in the shell connecting end 6 to adjust.

It is worth noting that: in the description of the present invention, "a plurality of" means two or more, unless otherwise clearly defined. In the present utility model, unless otherwise expressly specified and limited, the terms "installation", "connection", "connection", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; may be mechanical connection, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be realized in other specific forms without departing from the spirit or essential characteristics of the present invention . Therefore, the embodiments are to be regarded in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and is therefore intended to fall within the scope of All changes within the meaning and scope of the equivalents of the claims are included in the present invention patent. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (8)

1. A universal mirror adapted to a low-turbulence and low-speed wind tunnel, characterized in that it includes a reflective lens, a fixed bracket, and an adjustable and fixed reflective lens to make it meet the requirements of the reflected light and the original in the low-turbulence low-speed wind tunnel test. A universal device with the light in the same horizontal position, the reflective lens is fixed on the universal device, and the universal device is connected to the fixed bracket; it also includes a C-shaped clip fixed on the outer edge of the test closed section, and the fixed bracket is fixed with the C-shaped clip; the The universal device includes a lens tray, a spherical hinge, and a fixed component. The front of the lens tray is installed with a reflective lens, and the back is connected with a spherical hinge. The angle of the reflective lens can be adjusted through the spherical hinge. The spherical hinge is fixed by the fixed component and the fixed bracket. The fixed component The horizontal position of the reflective lens can be adjusted horizontally on the fixed bracket. 2 . The universal mirror adapted to a low-turbulence and low-speed wind tunnel according to claim 1 , wherein the spherical hinge comprises a spherical connecting end and a shell connecting end, and the shell connecting end is provided with a plurality of A fixing hole is provided on the inner wall of the fixing hole, and the connecting end of the shell can be fixed by inserting butterfly bolts into the fixing hole to fix the connecting end of the ball. 3 . The gimbal mirror adapted to a low turbulence and low speed wind tunnel according to claim 1 , wherein the fixing bracket comprises a plurality of first installation brackets and a plurality of second installation brackets, the first installation bracket The bracket is fixed with the C-clamp, the second installation bracket is fixed with the fixing component, the two ends of the second installation bracket are fixed with the first installation bracket, the first installation bracket is provided with a first installation hole, and the second installation bracket is provided with a second installation bracket. Mounting holes. 4. a kind of universal mirror adapted to low turbulence and low speed wind tunnel according to claim 3, is characterized in that: described C-shaped clip comprises two legs, the leg length is 2-3cm, C-shaped clamp closed surface There is a back column screw for installing the fixing bracket, and a first limit stopper, a first rubber gasket and a first butterfly nut are arranged on the back column. The back column screw passes through the first installation hole and passes through the first butterfly. The shaped nut fixes the first mounting bracket between the first limiting block and the first rubber gasket. 5 . The gimbal mirror adapted to a low turbulence and low speed wind tunnel according to claim 1 , wherein the fixing component comprises a second limit stopper, a bolt, a second rubber gasket, a second The wing nut, the bolt is connected with the connecting end of the shell, the second limit block is located on the bolt, the second installation hole passes through the bolt, and is matched by the second rubber gasket, the second wing nut and the second limit block Secure the second mounting bracket. 6 . The universal mirror adapted to a low-turbulence and low-speed wind tunnel according to claim 4 , wherein there are four C-shaped clips. 7 . 7 . The gimbal mirror adapted to a low-turbulence and low-speed wind tunnel according to claim 4 , wherein there are two first mounting brackets, and the first mounting holes are located at both ends of the first mounting bracket. 8 . . 8. A gimbal mirror adapted to a low-turbulence and low-speed wind tunnel according to claim 4, wherein the second mounting bracket is provided with two, the second mounting hole is a long strip, and the fixing assembly Can move horizontally in the second mounting hole.

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