阅读说明：本技术 一种风洞试验姿态测量系统的保护装置 (Protection device of wind tunnel test attitude measurement system ) 是由 张峻宾 张德炜 许晓斌 曹宇 郑磊 徐洪文 侯峰伟 陈磊 邹琼芬 于 2021-09-02 设计创作，主要内容包括：本发明涉及风洞试验测量技术领域,尤其涉及一种风洞试验姿态测量系统的保护装置。该保护装置包括支架、连接板和两个保护部,两个保护部通过连接板安装在支架上,每个保护部包括相机框座、镜头框座和后盖,三者连接后形成容纳工业相机的密封腔,工业相机通过镜头框座内的光学玻璃进行图像采集,通过调整镜头框座能够实现光学玻璃与镜头之间的距离,适应焦距的调整。两个保护部均能够相对连接板在水平面上进行角度调整,以达到最好的成像效果,密封空间能够使工业相机保持在常压空气中工作,提高工业相机的使用寿命。(The invention relates to the technical field of wind tunnel test measurement, in particular to a protection device of a wind tunnel test attitude measurement system. This protection device includes support, connecting plate and two protection portions, and two protection portions pass through the connecting plate to be installed on the support, and every protection portion includes camera frame seat, camera lens frame seat and hou gai, and the three forms the sealed chamber that holds the industry camera after connecting, and the industry camera carries out image acquisition through the optical glass in the camera lens frame seat, can realize the distance between optical glass and the camera lens through adjusting camera lens frame seat, adapts to the adjustment of focus. Two protection portions all can carry out angular adjustment on the horizontal plane relative to the connecting plate to reach best formation of image effect, sealed space can make industry camera keep working in the ordinary pressure air, improves the life of industry camera.)

1. A protection device of a wind tunnel test attitude measurement system is characterized by comprising:

a support;

the connecting plate is arranged on the bracket and used for mounting the protection part, and two arc-shaped sliding holes are arranged on the connecting plate at intervals; and

the two protection parts are arranged on the connecting plate at intervals in the left-right direction, each protection part is connected with the connecting plate at two positions, one position is rotatably connected through a rotating shaft, the other position is connected with the protection part in a threaded mode through an adjusting screw penetrating through the arc-shaped sliding hole, the arc center of the arc-shaped sliding hole is located on the axis of the rotating shaft, and when the adjusting screw is not locked, the protection parts can rotate around the rotating shaft on the horizontal plane within the limited range of the arc-shaped sliding hole;

the protection part comprises a camera frame seat, a camera frame seat and a rear cover, optical glass vertical to the axis of the camera frame seat is arranged in the camera frame seat, the camera frame seat is in threaded connection with the front end of the camera frame seat, the rear cover is detachably connected with the rear end of the camera frame seat, sealing rings are arranged at the joints among the camera frame seat, the camera frame seat and the rear cover, wire holes for penetrating mesh wires and battery wires are formed in the rear cover, the wire holes are sealed by vacuum mud, and a sealing cavity for accommodating an industrial camera is formed among the camera frame seat, the camera frame seat and the rear cover;

the size of the seal cavity in the front-back direction is larger than that of the industrial camera in the front-back direction.

2. The protection device of claim 1, wherein: still be equipped with the auxiliary frame in the camera frame seat, the auxiliary frame includes fixed frame portion and at least one perpendicular the extension of fixed frame portion, fixed frame portion cover is established on the industry camera, the extension backward extend to back lid or stretch out the back lid, the extension stretch out when the back lid with be equipped with sealed between the back lid, remove the extension end can drive the industry camera is relative camera frame seat synchronous motion.

3. The protection device of claim 2, wherein: the auxiliary frame further comprises a fixing piece, wherein a connecting screw is arranged on the fixing piece, and the connecting screw can be in threaded connection with the industrial camera.

4. A protection device according to claim 2 or 3, characterized in that: the extension portion is the screw rod, and quantity is two, two the parallel and interval setting in the left and right sides direction of screw rod, two the screw rod stretches out behind the back lid respectively with nut threaded connection nut with be equipped with seal structure between the back lid.

5. The protection device of claim 1, wherein: be equipped with two at least stop screw on every wallboard of camera frame seat, and two stop screw interval setting in the front and back direction, every stop screw's one end can insert camera frame seat supports on the industry camera, through the rotation stop screw can adjust its degree of depth that stretches into camera frame seat, stop screw with be equipped with the sealing washer between the camera frame seat.

6. The protection device of claim 1, wherein: the camera lens frame seat is connected with the camera frame seat through an extension ring, one end of the extension ring is in threaded connection with the camera frame seat, the other end of the extension ring is in threaded connection with the camera lens frame seat, and sealing rings are arranged at the joints of the extension ring and the camera frame seat and the camera lens frame seat.

7. The protection device of claim 1, wherein: the optical glass is K optical glass; and/or

The camera frame seat, the lens frame seat and the rear cover are made of metal materials and used for electromagnetic shielding.

8. The protection device according to claim 1 or 7, characterized in that: the inner side of the optical glass is provided with a glass sealing ring, the outer side of the optical glass is provided with a glass pressing ring, and a buffer gasket is arranged between the optical glass and the glass pressing ring.

9. The protection device according to claim 1 or 2, characterized in that: the support comprises a vertical fixing plate, a horizontal supporting plate and a telescopic rod, the horizontal supporting plate and the vertical fixing plate are rotatably connected, the fixed end of the telescopic rod is connected with the vertical fixing plate, the telescopic end of the telescopic rod is connected with the horizontal supporting plate, and the telescopic rod can drive the horizontal supporting plate to rotate relative to the vertical fixing plate through stretching;

the connecting plate is connected with the horizontal supporting plate.

10. The protection device of claim 9, wherein: the connecting plate is connected with the horizontal supporting plate through a displacement structure;

the displacement structure comprises a left displacement slide rail, a right displacement slide rail, a front displacement slide rail, a rear displacement slide rail and an intermediate plate, wherein the front displacement slide rail and the rear displacement slide rail are arranged between the intermediate plate and the horizontal support plate, the intermediate plate can slide back and forth relative to the horizontal support plate through the front displacement slide rail and the rear displacement slide rail, the front displacement slide rail and the rear displacement slide rail are also provided with front and rear locking screws, and the front and rear locking screws are screwed to limit the front and rear sliding of the intermediate plate relative to the horizontal support plate;

control the displacement slide rail setting and be in the connecting plate with between the intermediate lamella, the connecting plate passes through control the displacement slide rail can be relative the intermediate lamella horizontal slip, control the displacement slide rail still be equipped with about locking screw, through screwing control locking screw restriction the connecting plate is relative the intermediate lamella horizontal slip.

Technical Field

The invention relates to the technical field of wind tunnel test measurement, in particular to a protection device of a wind tunnel test attitude measurement system.

Background

The wind tunnel test attitude measurement system is usually adopted for attitude measurement in a wind tunnel test, at present, two industrial cameras are mostly adopted as an acquisition part to realize measurement in the wind tunnel test attitude measurement system, the industrial cameras belong to precise electronic products, and the wind tunnel test attitude measurement system is mostly in a high-temperature, high-pressure and vacuum working environment, so that the wind tunnel test attitude measurement system is easy to damage, the service life of the wind tunnel test attitude measurement system is shortened, and the test cost is increased.

In addition, according to the test needs, the measurement angle of the wind tunnel test attitude measurement system sometimes needs to be adjusted, and industrial cameras generally need to be rearranged and fixed in the prior art, so that the test difficulty is increased, and the test efficiency is reduced.

At present, a protection device of a wind tunnel test attitude measurement system capable of meeting the wind tunnel test attitude measurement requirement is not found in the prior art.

Disclosure of Invention

Technical problem to be solved

The invention aims to provide a protection device suitable for a wind tunnel test attitude measurement system, which solves at least one problem in the prior art.

(II) technical scheme

In order to achieve the above object, the present invention provides a protection device for a wind tunnel test attitude measurement system, comprising:

a support;

the connecting plate is arranged on the bracket and used for mounting the protection part, and two arc-shaped sliding holes are arranged on the connecting plate at intervals; and

the two protection parts are arranged on the connecting plate at intervals in the left-right direction, each protection part is connected with the connecting plate at two positions, one position is rotatably connected through a rotating shaft, the other position is connected with the protection part through an adjusting screw which penetrates through an arc-shaped sliding hole in a threaded manner, the arc center of the arc-shaped sliding hole is positioned on the axis of the rotating shaft, and when the adjusting screw is not locked, the protection parts can rotate around the rotating shaft on the horizontal plane within the limited range of the arc-shaped sliding hole;

the protective part comprises a camera frame seat, a camera lens frame seat and a rear cover, optical glass vertical to the axis of the camera lens frame seat is arranged in the camera lens frame seat, the camera lens frame seat is in threaded connection with the front end of the camera frame seat, the rear cover is detachably connected with the rear end of the camera frame seat, sealing rings are arranged at the joints among the camera lens frame seat, the camera frame seat and the rear cover, wire holes for penetrating mesh wires and battery wires are formed in the rear cover, the wire holes are sealed by vacuum mud, and a sealing cavity for accommodating an industrial camera is formed among the camera lens frame seat, the camera frame seat and the rear cover;

the dimension of the sealed cavity in the front-back direction is larger than that of the industrial camera in the front-back direction.

Preferably, still be equipped with the auxiliary frame in the camera frame seat, the auxiliary frame includes the extension of fixed frame portion and at least one perpendicular fixed frame portion, and fixed frame portion cover is established on the industry camera, and the extension backward extends to the back lid or stretches out the back lid, and the extension is equipped with sealedly when stretching out the back lid and between the lid after, removes the extension end and can drive the relative camera frame seat synchronous motion of industry camera.

Preferably, the auxiliary frame further comprises a fixing piece, wherein a connecting screw is arranged on the fixing piece, and the connecting screw can be in threaded connection with the industrial camera.

Preferably, the extension portion is the screw rod, and the quantity is two, and two parallel and left and right sides of screw rod are the interval setting, and two screw rods stretch out behind the back lid respectively with nut threaded connection, are equipped with seal structure between nut and back lid.

Preferably, be equipped with two at least stop screw on every wallboard of camera frame seat, and two stop screw interval settings in the front and back direction, the one end of every stop screw can insert camera frame seat and support on industrial camera, can adjust its degree of depth that stretches into camera frame seat through rotatory stop screw, is equipped with the sealing washer between stop screw and the camera frame seat.

Preferably, the lens frame base is connected with the camera frame base through an extension ring, one end of the extension ring is in threaded connection with the camera frame base, the other end of the extension ring is in threaded connection with the lens frame base, and sealing rings are arranged at the connection parts of the extension ring, the camera frame base and the lens frame base.

Preferably, the optical glass is a K optical glass; and/or

The camera frame seat, the lens frame seat and the rear cover are made of metal materials and used for electromagnetic shielding.

Preferably, the inner side of the optical glass is provided with a glass sealing ring, the outer side of the optical glass is provided with a glass pressing ring, and a buffer gasket is arranged between the optical glass and the glass pressing ring.

Preferably, the support comprises a vertical fixing plate, a horizontal supporting plate and a telescopic rod, the horizontal supporting plate and the vertical fixing plate are rotatably connected, the fixed end of the telescopic rod is connected with the vertical fixing plate, the telescopic end of the telescopic rod is connected with the horizontal supporting plate, and the telescopic rod can drive the horizontal supporting plate to rotate relative to the vertical fixing plate through stretching;

the connecting plate is connected with the horizontal supporting plate.

Preferably, the connecting plate is connected with the horizontal supporting plate through a displacement structure;

the displacement structure comprises a left displacement slide rail, a right displacement slide rail, a front displacement slide rail, a rear displacement slide rail and a middle plate, wherein the front displacement slide rail and the rear displacement slide rail are arranged between the middle plate and the horizontal support plate, the middle plate can slide back and forth relative to the horizontal support plate through the front displacement slide rail and the rear displacement slide rail, the front displacement slide rail and the rear displacement slide rail are also provided with front and rear locking screws, and the front and rear sliding of the middle plate relative to the horizontal support plate is limited by screwing the front and rear locking screws;

the left and right displacement slide rails are arranged between the connecting plate and the middle plate, the connecting plate can slide left and right relative to the middle plate through the left and right displacement slide rails, the left and right displacement slide rails are further provided with left and right locking screws, and the left and right sliding of the connecting plate relative to the middle plate is limited through the locking screws which are screwed.

(III) advantageous effects

The technical scheme of the invention has the following advantages: the invention provides a protection device of a wind tunnel test attitude measurement system, which comprises a support, a connecting plate and two protection parts, wherein the two protection parts are arranged on the support through the connecting plate, each protection part comprises a camera frame seat, a lens frame seat and a rear cover, a sealed cavity for accommodating an industrial camera is formed after the camera frame seat, the lens frame seat and the rear cover are connected, the industrial camera carries out image acquisition through optical glass in the lens frame seat, and the distance between the optical glass and a lens can be realized by adjusting the lens frame seat so as to adapt to the adjustment of a focal length. Two protection portions all can carry out angular adjustment on the horizontal plane relative to the connecting plate to reach best formation of image effect, sealed space can make industry camera keep working in the ordinary pressure air, improves the life of industry camera.

Drawings

The drawings of the present invention are provided for illustrative purposes only, and the proportion and the number of the components in the drawings do not necessarily correspond to those of an actual product.

FIG. 1 is a schematic top view of a protection device of a wind tunnel test attitude measurement system according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view A-A of FIG. 1 (with the industrial camera and auxiliary frame not cut away);

FIG. 3 is a schematic structural view of the two protecting parts in FIG. 1 after the angle adjustment on the horizontal plane;

FIG. 4 is a schematic top view of an auxiliary frame according to an embodiment of the present invention;

FIG. 5 is a left side view of the auxiliary frame of FIG. 4;

fig. 6 is a schematic view of the structure of the stent of fig. 2.

In the figure: 1: a support; 11, a vertical fixing plate; 12: a horizontal support plate; 13: a telescopic rod; 14: a displacement structure; 141: a left and right displacement slide rail; 142: a front and rear displacement slide rail; 143: a middle plate; 144: left and right locking screws; 145: front and rear locking screws;

2: a connecting plate; 21: an arc-shaped slide hole;

3: a protection part; 31: a camera frame mount; 32: a lens frame base; 321: an optical glass; 322: a glass seal ring; 323: pressing a ring by glass; 324: a cushion washer; 33: a rear cover; 34: lengthening the ring; 35: an auxiliary frame; 351: a fixed frame portion; 352: an extension portion; 353: a fixing sheet; 354: a connecting screw; 36: locking the screw;

4: a rotating shaft; 5: an adjusting screw; 6, a limit screw; 7: an industrial camera.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, in the protection device of the wind tunnel test attitude measurement system according to the embodiment of the present invention, the wind tunnel test attitude measurement system is composed of two industrial cameras 7. The protection device comprises a bracket 1, a connecting plate 2 and two protection parts 3. The connecting plate 2 is arranged on the support 1, and the support 1 is used for realizing the installation and fixation of the protection device and the industrial camera 7 in the protection device. The two protection portions 3 are attached to the connection plate 2 at an interval in the left-right direction. Wherein, two arc slide holes 21 are arranged on the connecting plate 2 at intervals, two positions of each protection part 3 are connected with the connecting plate 2, one position is rotatably connected through the rotating shaft 4, and the other position is in threaded connection with the protection part 3 through the arc slide holes 21 by the adjusting screws 5. The arc center of the arc slide hole 21 is located on the axis of the rotating shaft 4, and when the angle of the protecting part 3 on the horizontal plane needs to be adjusted, the adjusting screw is loosened (i.e. the adjusting screw 5 is in an unlocked state), and the protecting part 3 can rotate around the rotating shaft 4 on the horizontal plane within the limited range of the arc slide hole 21. Preferably, an angle scale is provided at the arc-shaped sliding hole 21 so that the angle adjustment can be performed more precisely. It should be noted that the rotating shaft 4 is only required to be capable of rotating the protection portion 3 relative to the connecting plate 2, and is not limited herein, and a person skilled in the art may select an existing structure as needed, for example, a rotating shaft 4 structure, where one end of the pin shaft is connected to the connecting plate 2 through a bearing, and the other end is connected to the protection portion 3. The other rotating shaft 4 is a bolt, one end of the bolt is fixed relative to the connecting plate 2, the other end of the bolt is in threaded connection with the protection part 3, and the protection part 3 is adjusted to rotate and adjust within a small range by adjusting the relative bolt rotation of the protection part 3.

Referring to fig. 2, the protection part 3 includes a camera frame seat 31, a lens frame seat 32 and a rear cover 33, an optical glass 321 perpendicular to the axis of the lens frame seat 32 is disposed in the lens frame seat 32, and the lens frame seat 32 is in threaded connection with the camera frame seat 31, so that the protection part is not only convenient to detach, but also can adjust the distance between the optical glass 321 and the lens to a certain extent, so as to adapt to the adjustment of the focal length of the lens. The rear cover 33 is detachably attached to the other end of the camera frame base 31, and facilitates the placement and removal of the industrial camera 7 to be protected. The camera frame seat 31 is connected with the lens frame seat 32 and the rear cover 33 to form a sealed cavity, and the size of the sealed cavity in the front-rear direction (the size between the optical glass 321 and the rear cover 33) is larger than the size of the industrial camera in the direction (the size between the end face of the industrial camera and the tail part of the industrial camera), so that a proper distance can be ensured between the lens and the optical glass 321, and the adjustment of the focal length can be adapted. It should be noted that the distance between the lens and the optical glass 321 is determined to satisfy the collecting requirement, and is a technique known to those skilled in the art, and can be adjusted as needed.

Sealing rings are arranged at the joints among the lens frame base 32, the camera frame base 31 and the rear cover 33, wire holes (not shown in the figure) for penetrating mesh wires and battery wires are arranged on the rear cover 33, and the wire holes are sealed by vacuum mud, so that a sealing cavity for accommodating the industrial camera 7 is formed among the lens frame base 32, the camera frame base 31 and the rear cover 33. And the normal pressure air in the sealing cavity is kept during sealing, so that the industrial camera 7 in the sealing cavity is always processed in a normal pressure working environment.

The rear cover 33 may be screwed to the camera frame base 31 by a screw structure, or may be locked and fixed to the camera frame base 31 by a locking screw 36. Preferably, the locking screw 36 is used for fixing in the present embodiment, so as to reduce the interference of the network cable, the power line and the like on the installation of the rear cover 33.

When the industrial camera is used, the industrial camera 7 is placed in the camera frame seat 31, the lens frame seat 32 is in threaded connection with the camera frame seat 31, the distance between the lens of the industrial camera 7 and the optical glass 321 is adjusted, the rear cover 33 is installed on the camera frame seat 31, wires such as network cables and power lines penetrate through the wire holes, the wire holes are sealed by vacuum mud, when the focal length is required to be adjusted, the lens frame seat 32 can be adjusted as required, the distance between the optical glass 321 and the lens of the industrial camera 7 is changed correspondingly, and the requirement of focusing imaging is met. When the angle of the industrial camera 7 on the horizontal plane needs to be adjusted, referring to fig. 3, the protection part 3 is integrally rotated around the rotating shaft 4 by adjusting the adjusting screw 5, so as to meet the angle adjustment requirement. The protection device can enable the industrial camera 7 to work in normal-pressure air, can adapt to the change of focal length within a fixed range, meets the adjustment of the angle of the industrial camera 7 on a horizontal plane, enables the wind tunnel test attitude measurement system to achieve the best imaging effect in a safe environment, and prolongs the service life.

In order to facilitate the installation and removal of the industrial camera 7, in some preferred embodiments, as shown in fig. 2, 4 and 5, an auxiliary frame 35 is further disposed in the camera frame seat 31, the auxiliary frame 35 includes a fixed frame portion 351 and at least one extension portion 352 perpendicular to the fixed frame portion 351, the fixed frame portion 351 is sleeved on the industrial camera 7, and the extension portion 352 extends toward the rear cover 33 to the vicinity of the rear cover 33 (after the rear cover 33 is opened, the extension portion 352 can be pulled by hand) or extends out of the rear cover 33. If the extension portion 352 extends out of the rear cover 33, a seal (e.g., a sealing ring, a sealing cap, or a vacuum-mud seal) is formed between the extension portion 352 and the rear cover 33, and moving the extension portion 352 can move the industrial camera 7 relative to the camera frame base 31 synchronously.

In order to achieve a good synchronous movement of the auxiliary frame 35 and the industrial camera 7, in some preferred embodiments, as shown in fig. 1 to 5, the auxiliary frame 35 further includes a fixing plate 353, and a connecting screw 354 is disposed on the fixing plate 353, and the connecting screw 354 can be screwed with the industrial camera 7. Preferably, the connection screw 354 is directly connected with a bottom threaded hole reserved for the connection tripod of the industrial camera 7.

In one embodiment, as shown in fig. 1, 3, 4 and 5, the extension portion 352 is a screw rod, and the number of the extension portions is two, the two screw rods are parallel and spaced apart in the left-right direction, the two screw rods extend out of the rear cover 33 and are respectively in threaded connection with the nut, and a sealing structure is arranged between the nut and the rear cover 33, and the sealing structure may be a sealing ring or a sealing structure such as an axial double nut plus a double sealing ring, and can achieve gas sealing, which is not limited herein.

In order to keep the lens of the industrial camera 7 parallel to the optical glass 321 to ensure good focusing and imaging effects, in a preferred embodiment, as shown in fig. 1-3, at least two limit screws 6 are provided on each wall plate of the camera frame seat 31, and the two limit screws 6 are spaced in the front-back direction, one end of each limit screw 6 can be inserted into the camera frame seat 31 and abut on the industrial camera 7, and the depth of the limit screw 6 extending into the camera frame seat 31 can be adjusted by rotating the limit screw, so that the straightness of the industrial camera 7 can be adjusted, and the lens end surface of the industrial camera 7 is ensured to be parallel to the optical glass 321. Of course, the corresponding limit screw 6 can also be adjusted to correct the influence of the processing error on the imaging effect, and a sealing ring is arranged between the limit screw 6 and the camera frame seat 31 to ensure sealing. Note that, the seal at the limit screw 6 may be a seal of the related art, and is not limited herein.

In order to avoid the influence of electromagnetic radiation on the measurement system, it is preferable that the camera frame base 31, the lens frame base 32, and the rear cover 33 are made of metal materials to achieve electromagnetic shielding. It should be noted that the metal material may be selected according to the shielding requirement, and the electromagnetic shielding may be achieved. When a metal material is used, the strength is generally sufficient for the purpose of high pressure resistance, and the thickness is preferably 4mm or more, for example, 5mm, 6mm, 7.5mm, or the like. In other embodiments, an electromagnetic shielding material may be wrapped outside the protection part 3.

In a preferred embodiment, the optical glass 321 is K9 optical glass.

In some embodiments, the optical glass 321 is provided with a glass sealing ring 322 on the inner side, a glass pressing ring 323 on the outer side, and a buffer gasket 324 between the optical glass 321 and the glass pressing ring 323, so that when the optical glass 321 is sealed and fixed, the optical glass can have a certain buffer when contacting with the lens of the industrial camera 7, thereby protecting the lens and avoiding damage to the lens of the industrial camera 7 due to collision when moving or operating is out of order. The glass seal 322 is a seal for sealing the optical glass 321, and is not limited to being made of a glass material, and is not limited to being a conventional seal. Similarly, the glass pressing ring 322 is connected to the lens frame 32 to limit the position of the optical glass 321, but the material is not limited to glass, and may be 304 stainless steel, for example. The cushion ring 324 may be made of a soft material such as a rubber ring.

In order to adapt to adjustment of a larger focal length, in some preferred embodiments, as shown in fig. 1 to fig. 3, the lens frame base 32 is connected with the camera frame base 31 through an extension ring 34, one end of the extension ring 34 is in threaded connection with the camera frame base 31 through an external thread, the other end of the extension ring is in threaded connection with the lens frame base 32 through an internal thread, and sealing rings are arranged at the joints of the extension ring 34, the camera frame base 31 and the lens frame base 32. Here, the extension ring 34 is a female screw to be connected to the lens frame 32, which is selected based on the lens frame 32 being a male screw, and is not limited to a screw structure, and if the connection portion of the lens frame 32 is a female screw, the extension ring 34 is screwed to the lens frame 32 by a male screw. In other embodiments, multiple extension rings may be axially disposed to provide a finer and wider range of distance adjustment, with threaded connections between the extension rings 34.

In order to adjust the pitch angle of the industrial camera 7 conveniently, as shown in fig. 2 and fig. 6, the bracket 1 includes a vertical fixing plate 11, a horizontal support plate 12 and an expansion link 13, the horizontal support plate 12 and the vertical fixing plate 11 are rotatably connected (for example, hinged, connected by a rotating shaft, etc.), a fixed end of the expansion link 13 is connected to the vertical fixing plate 11, and a telescopic end is connected to the horizontal support plate 12, the expansion link 13 can drive the horizontal support plate 12 to rotate relative to the vertical fixing plate 11, and the connecting plate 2 is connected to the horizontal support plate 12, so that the protection part 3 and the industrial camera 7 therein and the horizontal support plate 12 move synchronously, and the pitch angle adjustment of the industrial camera 7 is realized. The telescopic rod 13 is preferably an electric telescopic rod.

To further adjust the measuring position of the industrial camera, the connection plate 2 is preferably connected to the horizontal support plate 12 by a displacement structure 14, as shown in fig. 2 and 6. The displacement structure 14 includes a left and right displacement slide rail 141, a front and rear displacement slide rail 142, and an intermediate plate 143, the front and rear displacement slide rail 142 is disposed between the intermediate plate 143 and the horizontal support plate 12, and the intermediate plate 143 can slide back and forth relative to the horizontal support plate 12 through the front and rear displacement slide rail 142. Preferably, the front and rear displacement rails 142 are further provided with front and rear locking screws 145, which are tightened to limit the front and rear sliding of the intermediate plate 143 relative to the horizontal support plate 12, so as to achieve more stable position fixing.

The left and right displacement slide rails 141 are provided between the connection plate 2 and the intermediate plate 143, and the connection plate 2 can slide left and right relative to the intermediate plate 143 via the left and right displacement slide rails 141. Preferably, the left and right displacement slide rails 141 are further provided with left and right locking screws 144, and the left and right locking screws 144 are tightened to limit the left and right sliding of the connecting plate 2 relative to the middle plate 143, so as to achieve more stable position fixing.

It should be noted that the left and right displacement slide rails 141 and the front and rear displacement slide rails 142 may be all of the existing slide rail structures, for example, a slide rail composed of a slide block and a rail, the slide block and the rail are connected by two members respectively sliding relatively, and the slide block is matched with the rail. The locking screw penetrates through one of the sliding block or the track and is in threaded fit with the sliding block or the track, the locking screw can be abutted against the other component, and the switching between the relative sliding state and the locking state can be realized by adjusting the insertion depth of the locking screw.

It should be noted that only one left and right displacement slide rail 141 may be disposed between the connecting plate 2 and the middle plate 143, or two or more left and right displacement slide rails 141 may be disposed at intervals, so as to be stably supported and moved, and preferably, as shown in fig. 2 and 6, two left and right displacement slide rails 141 disposed in parallel and at intervals are used. Also, only one front-rear displacement slide rail 142 may be provided between the middle plate 143 and the horizontal support plate 12, or two or more front-rear displacement slide rails 142 may be provided at intervals, and preferably, two parallel front-rear displacement slide rails 142 are used (the two parallel front-rear displacement slide rails 142 are not visible in the direction shown in fig. 2 and 6, and the structure and arrangement thereof may refer to the left-right displacement slide rails 141 in fig. 2 and 6, and the difference is that the arrangement direction is different). In the embodiment, the wind tunnel test attitude measurement system can well realize position adjustment in the front, back, left and right directions.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: each embodiment does not include only one independent technical solution, and in the case of no conflict between the solutions, the technical features mentioned in the respective embodiments can be combined in any way to form other embodiments which can be understood by those skilled in the art.

Furthermore, modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, without departing from the scope of the present invention, and the essence of the corresponding technical solutions does not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.