CN109186923B - Device for detecting wind resistance of plate in wind tunnel - Google Patents
Device for detecting wind resistance of plate in wind tunnel Download PDFInfo
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- CN109186923B CN109186923B CN201811373518.4A CN201811373518A CN109186923B CN 109186923 B CN109186923 B CN 109186923B CN 201811373518 A CN201811373518 A CN 201811373518A CN 109186923 B CN109186923 B CN 109186923B
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- 230000000670 limiting effect Effects 0.000 claims description 45
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 230000025518 detection of mechanical stimulus involved in sensory perception of wind Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 abstract description 43
- 238000012360 testing method Methods 0.000 abstract description 19
- 238000005520 cutting process Methods 0.000 abstract description 7
- 238000001514 detection method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000011090 solid board Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/06—Measuring arrangements specially adapted for aerodynamic testing
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Abstract
The invention discloses a device for detecting wind resistance of a plate in a wind tunnel, which comprises a placing component, a bracket for fixing the placing component and a connecting component for connecting the placing component and the bracket, wherein the placing component comprises a plurality of frames; the connecting assembly comprises a first hinged plate and a second hinged plate, and a rotating assembly is arranged on the frame; placing the wood board to be detected on the placing assembly, and then cutting the wood board to be detected into a plurality of boards with the same size; after cutting, pulling one of the frames upwards; under the action of tensile force, the frame and the frame can be separated from each other, and the first hinged plate and the second hinged plate are changed from being parallel to the bottom plate to being inclined to the bottom plate; then the wood board is rotated relative to the frame through the rotating assembly; then, opening the fan, and testing the wind resistance of the plate; the invention directly tests the wind resistance of a plurality of plates together, greatly shortens the test time and reduces the labor cost to a certain extent; compared with multiple tests, the obtained data is more accurate.
Description
Technical Field
The invention relates to the field of wind resistance detection, in particular to a device for detecting wind resistance of a plate in a wind tunnel.
Background
The plate is a flat rectangular building material plate with standard size, and is mainly applied to the building industry; according to the material, the board can be divided into two categories, namely a solid board and an artificial board. At present, with the increasing of temporary buildings, wood boards are often applied to the temporary buildings. Because the temporary buildings are arranged outdoors, the temporary buildings are often exposed to weather such as strong wind; this requires the board to have strong wind resistance; however, the quality of the plates on the market is uneven at present, and in order to ensure safety, the plates are subjected to certain wind resistance tests before being actually used.
In the prior art, a plurality of large wood boards are selected in one batch, and each large wood board is divided into a plurality of boards with standard sizes; then placing each plate in a wind tunnel for wind resistance performance test; therefore, the wind resistance of each area on the wood board can be accurately tested; the potential safety hazard caused by certain difference of wind resistance of each part of the wood board due to uneven density of the wood board is avoided. But because need carry out anti-wind to each panel in proper order and detect, it is very hard to waste time, and economic efficiency is very low.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a device for wind tunnel detection of the wind resistance of a board, which can accurately measure the wind resistance of each area on the board in a short time.
In order to achieve the purpose, the invention provides the following technical scheme: a device for detecting wind resistance of plates in a wind tunnel comprises a placing component, a bracket for fixing the placing component and a connecting component for connecting the placing component and the bracket; the placing assembly comprises a plurality of frames for placing plates, the connecting assembly comprises a first hinged plate and a second hinged plate, connecting pieces are arranged on one sides of the frames, one end of each connecting piece is fixedly connected with the frame, the other end of each connecting piece is hinged with the second hinged plate, and one side of the frame, which is far away from the connecting pieces, is hinged with the first hinged plate; the first hinge plate and the second hinge plate are arranged in parallel, and the first hinge plate is positioned above the second hinge plate; the bracket is hinged with the second hinged plate and is movably connected with the first hinged plate; when the frames are pulled upwards, the frames are separated from each other, and the first hinge plate and the second hinge plate are inclined relative to the frames and are kept parallel to each other; the frame is also provided with a rotating assembly used for enabling the plate to be vertical relative to the ground.
As a further improvement of the invention, a sliding strip is arranged on the first hinge plate, and a kidney-shaped hole is arranged on the sliding strip; the bracket is provided with a fixing column, the fixing column is positioned in the waist-shaped hole and is connected with the sliding strip in a sliding manner, and the fixing column is provided with an external thread; the sliding device is characterized in that a rotating block used for fixing the sliding strip is arranged on one side, away from the support, of the fixing column, the rotating block is sleeved on the fixing column, an internal thread meshed with the external thread is arranged in the rotating block, and the sliding strip is located between the support and the rotating block.
As a further improvement of the invention, a fastening strip is arranged on the first hinged plate and is hinged with the first hinged plate, an insertion hole is arranged at one end of the fastening strip, which is far away from the first hinged plate, and an insertion column for inserting into the insertion hole is arranged on the second hinged plate.
As a further improvement of the invention, the rotating assembly comprises a rotating column and a fixing clamp, and the rotating column is rotatably connected with the frame; the fixed clamp comprises a clamp body, a fixed clamp head and a movable clamp head; the rotating column is fixedly connected with the clamp body; the fixed chuck and the movable chuck are both positioned on one side of the chuck body, which is far away from the rotating column, and the fixed chuck is positioned below the movable chuck; the fixed chuck is fixedly connected with the clamp body, and the movable chuck is connected with the clamp body in a sliding manner.
As a further improvement of the invention, a sliding groove is arranged on the side wall of the clamp body deviating from the rotating column, and a sliding block used for sliding in the sliding groove is arranged on the movable clamp; a plurality of zigzag limiting blocks are arranged on the inner wall of the sliding groove, and limiting assemblies for limiting the movement of the brake chucks are arranged on the sliding blocks; one side of the sliding block, which is far away from the movable chuck, is provided with a limiting groove, and the limiting assembly is positioned in the limiting groove; the limiting assembly comprises a first spring, a cylinder and a hemisphere; one end of the first spring is fixedly connected with the bottom wall of the limiting groove, and the other end of the first spring is fixedly connected with the column body; the hemisphere is located one side that the cylinder deviates from first spring and part exposes the spacing groove, first spring is used for keeping hemisphere spacing between two adjacent stoppers.
As a further improvement of the invention, a vertical groove is arranged on the movable chuck and is communicated with the limiting groove; a connecting column is arranged on the side surface of the column body, which is far away from the hemispheroid, and the first spring is sleeved on the connecting column; the movable chuck is also provided with an inserting rod for inserting into the vertical groove; when the inserted bar is inserted into the vertical groove, the inserted bar is pressed against the connecting column.
As a further improvement of the invention, the frame is also provided with a positioning component for fixing the clip body; the positioning assembly comprises a positioning column and a second spring; the frame is provided with a first positioning groove, and the clamp body is provided with a second positioning groove communicated with the first positioning groove; the positioning column is positioned in the first positioning groove, one end of the positioning column is inserted into the second positioning groove, and the other end of the positioning column extends out of the first positioning groove; one end of the second spring is fixedly connected with the inner wall of the first positioning groove, the other end of the second spring is fixedly connected with the positioning column, and the second spring keeps the positioning column inserted into the second positioning groove.
The invention has the beneficial effects that: when the wind resistance test is carried out on the wood board, the wood board to be tested is placed on the whole placing assembly, and then the wood board to be tested is cut into a plurality of boards with the same size; after cutting, fixing the plate and the frames, then pulling one of the frames upwards by hands, separating the frames from each other under the action of pulling force, changing the first hinged plate and the second hinged plate from being parallel to the bottom plate of the wind tunnel into being inclined to the bottom plate of the wind tunnel, and fixing the frames after adjusting to a certain height; then, the wood board rotates relative to the frame through the rotating assembly, the wood board is parallel to the bottom plate of the wind tunnel from the beginning until the wood board is vertical to the bottom plate of the wind tunnel, namely the wood board rotates 90 degrees; after the adjustment is finished, fixing the wood; then, a fan in the wind tunnel is opened, the boards are tested, the strength of the fan is small to large, when the boards are bent or even broken, the wind resistance of the boards can be basically determined, then according to the wind resistance of each board, the wind resistance of the whole wood board can be known, and whether the wood board has uneven mass distribution or not can be known, so that potential safety hazards during construction can be avoided, and the life safety of a user can be guaranteed; meanwhile, the wind resistance performance of a plurality of plates is directly tested, compared with the method of testing one plate, the testing time is greatly shortened, and the labor cost is reduced to a certain extent; meanwhile, various conditions are the same when the plates are measured at one time, and compared with multiple tests, the obtained data is more accurate.
Drawings
FIG. 1 is a schematic view of an initial structure of a frame and connecting assembly according to the present invention;
FIG. 2 is a schematic structural view of the frame and the connecting assembly of the present invention after the frame is separated from the frame;
FIG. 3 is a schematic view of the placement module and the connection module of the present invention;
FIG. 4 is a schematic structural view of the present invention;
FIG. 5 is a front view of the rotating assembly of the present invention;
FIG. 6 is a front view of the rotating assembly of the present invention after rotation;
FIG. 7 is a schematic view of a positioning assembly according to the present invention;
FIG. 8 is a schematic structural view of the clamp body and the movable clamp head of the present invention;
reference numerals: 2. placing the component; 21. a frame; 22. a rotating assembly; 23. a rotating groove; 3. a connecting assembly; 31. a first hinge plate; 311. a slide bar; 312. a kidney-shaped hole; 313. fastening strips; 314. a jack; 32. a second hinge plate; 321. connecting sheets; 322. inserting a column; 4. a support; 41. fixing a column; 42. rotating the block; 5. rotating the column; 6. a fixing clip; 61. a clip body; 611. a chute; 612. a limiting block; 62. fixing a chuck; 63. a movable chuck; 64. a vertical slot; 65. inserting a rod; 7. a restraining component; 71. a first spring; 72. a hemisphere; 73. a cylinder; 74. connecting columns; 8. a positioning assembly; 81. a first positioning groove; 82. a second positioning groove; 83. a positioning column; 84. a second spring;
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals.
Referring to fig. 1 to 8, the device for wind tunnel detection of wind resistance of a sheet material of the embodiment comprises a placing component 2, a bracket 4 for fixing the placing component 2, and a connecting component 3 for connecting the placing component 2 and the bracket 4; the placing assembly 2 comprises a plurality of frames 21 for placing plates, the connecting assembly 3 comprises a first hinged plate 31 and a second hinged plate 32, connecting pieces 321 are arranged on one sides of the frames 21, one ends of the connecting pieces 321 are fixedly connected with the frames 21, the other ends of the connecting pieces 321 are hinged to the second hinged plate 32, and one side of the frame 21, which is far away from the connecting pieces 321, is hinged to the first hinged plate 31; the first hinge plate 31 and the second hinge plate 32 are arranged in parallel, and the first hinge plate 31 is positioned above the second hinge plate 32; the bracket 4 is hinged with the second hinge plate 32, and the bracket 4 is movably connected with the first hinge plate 31; when the frames 21 are pulled upwards, the frames 21 are separated from each other, and the first hinge plate 31 and the second hinge plate 32 are inclined relative to the frames 21 and are kept parallel to each other; the frame 21 is further provided with a rotating assembly 22 for making the plate vertical to the ground.
Through the technical scheme: the placing component 2 comprises a plurality of frames 21, and before testing, the frames 21 and the frames 21 are mutually butted; the bracket 4 is fixed on a bottom plate of the wind tunnel and used for supporting the frame 21, and the bracket 4 is connected with the frame 21 through the connecting component 3; when the wind resistance test is carried out on the wood board, the wood board to be tested is placed on the whole placing assembly 2, and then the wood board to be tested is cut into a plurality of boards with the same size; after cutting, fixing the plate with the frames 21, then pulling one of the frames 21 upwards by hands, separating the frames 21 from the frames 21 under the action of pulling force, changing the first hinged plate 31 and the second hinged plate 32 from being parallel to the bottom plate of the wind tunnel into being inclined to the bottom plate of the wind tunnel, and fixing the frames 21 after adjusting to a certain height; then, the wood board is rotated relative to the frame 21 through the rotating assembly 22, and the wood board is parallel to the bottom plate of the wind tunnel from the beginning until the wood board is vertical to the bottom plate of the wind tunnel, namely the wood board is rotated by 90 degrees; after the adjustment is finished, fixing the wood; then, a fan in the wind tunnel is opened, the boards are tested, the strength of the fan is small to large, when the boards are bent or even broken, the wind resistance of the boards can be basically determined, then according to the wind resistance of each board, the wind resistance of the whole wood board can be known, whether the wood board has uneven mass distribution or not can be known, the potential safety hazard during construction can be avoided, and the life safety of a user can be ensured; meanwhile, the wind resistance performance of a plurality of plates is directly tested, compared with the method of testing one plate, the testing time is greatly shortened, and the labor cost is reduced to a certain extent; meanwhile, various conditions are the same when the plates are measured at one time, and compared with multiple tests, the obtained data is more accurate; during multiple tests, conditions such as temperature, air convection and the like during the tests may change to some extent, and the test results are affected.
As a modified specific embodiment, a sliding strip 311 is arranged on the first hinge plate 31, and a kidney-shaped hole 312 is arranged on the sliding strip 311; a fixing column 41 is arranged on the bracket 4, the fixing column 41 is positioned in the waist-shaped hole 312 and is connected with the sliding strip 311 in a sliding manner, and an external thread is arranged on the fixing column 41; a rotating block 42 used for fixing the sliding strip 311 is arranged on one side, away from the support 4, of the fixed column 41, the rotating block 42 is sleeved on the fixed column 41, an internal thread meshed with the external thread is arranged in the rotating block 42, and the sliding strip 311 is located between the support 4 and the rotating block 42.
Through the technical scheme: when the frame 21 is pulled upwards, the sliding strip 311 on the first hinge plate 31 moves relative to the fixed column 41, the fixed column 41 is located in the waist-shaped hole 312 of the sliding strip 311, and the fixed column 41 also has a certain limiting effect on the sliding strip 311, so that the sliding strip 311 moves more stably; after the frame 21 is adjusted to a proper position, the rotating block 42 is rotated by hand, the rotating block 42 moves towards the direction close to the support 4 until the sliding strip 311 is fixed, so that the sliding strip 311 cannot move relative to the fixed column 41, the frame 21 is fixed, the frame 21 cannot move continuously, and the wind resistance performance detection of subsequent plates is facilitated; the structure is simple and practical, and the manufacture is convenient.
In a modified embodiment, a fastening strip 313 is arranged on the first hinge plate 31, the fastening strip 313 is hinged with the first hinge plate 31, an insertion hole 314 is arranged at one end of the fastening strip 313, which faces away from the first hinge plate 31, and an insertion column 322 for inserting the insertion hole 314 is arranged on the second hinge plate 32. Through the technical scheme: when the wooden board is not placed on the frame 21, the insertion post 322 on the second hinge plate 32 is inserted into the insertion hole 314 of the fastening strip 313, thereby fixing the first hinge plate 31 and the second hinge plate 32 so that the first hinge plate 31 and the second hinge plate 32 do not move relative to the bracket 4; then, the wood plate is placed on the frame 21, and the wood plate is cut into the plate, so that the structure is also beneficial to convenient cutting, and the whole device cannot shake; after the wood board is cut, the inserting column 322 is pulled out from the inserting hole 314, so that subsequent operations are carried out, and the wood board cutting device is very convenient and practical.
As a modified specific embodiment, the rotating assembly 22 comprises a rotating column 5 and a fixing clamp 6, wherein the rotating column 5 is rotatably connected with the frame 21; the fixed clamp 6 comprises a clamp body 61, a fixed clamp 62 and a movable clamp 63; the rotating column 5 is fixedly connected with the clamp body 61; the fixed chuck and the movable chuck 63 are both positioned on one side of the chuck body 61 departing from the rotating column 5, and the fixed chuck 62 is positioned below the movable chuck 63; the fixed chuck 62 is fixedly connected with the chuck body 61, and the movable chuck 63 is connected with the chuck body 61 in a sliding manner.
Through the technical scheme: the thickness of the wood board is not necessarily the same in each test; in order to better fix the wood board to be measured; before the wood board to be tested is placed in the frame 21, the vertical distance between the movable chuck 63 and the fixed chuck 62 is increased, so that the wood board to be tested is conveniently placed in; after the wood board to be measured is placed, the movable chuck 63 is moved towards the direction close to the fixed chuck 62, and the movable chuck 63 is known to be abutted against the wood board to be measured; thus, the wood board to be measured can be well fixed; the frame 21 is provided with a rotating groove 23, and the rotating column 5 is positioned in the rotating groove 23; when carrying out the anti-wind test, through rotating rotation post 5, under the drive of rotation post 5, panel can be from being parallel to perpendicular with ground with the bottom plate of wind-tunnel mutually, just so can carry out the anti-wind capability test to obtain more accurate data.
As a modified specific embodiment, a sliding groove 611 is arranged on a side wall of the clamp body 61 away from the rotating column 5, and a sliding block for sliding in the sliding groove 611 is arranged on the movable clamp 63; a plurality of zigzag limiting blocks 612 are arranged on the inner wall of the sliding groove 611, and limiting components for limiting the movement of the brake chuck 63 are arranged on the sliding blocks; one side of the sliding block, which is far away from the movable chuck 63, is provided with a limiting groove, and the limiting assembly is positioned in the limiting groove; the limiting assembly comprises a first spring 71, a column 73 and a hemisphere 72; one end of the first spring 71 is fixedly connected with the bottom wall of the limiting groove, and the other end of the first spring is fixedly connected with the column 73; the hemisphere 72 is located on one side of the column 73, which faces away from the first spring 71, and part of the hemisphere is exposed out of the limiting groove, and the first spring 71 is used for keeping the hemisphere 72 limited between two adjacent limiting blocks 612. Through the technical scheme: the sliding groove 611 is formed in the machine body, the sliding block is arranged on the movable chuck 63 and is used for moving in the sliding groove 611, so that the movable chuck 63 moves relative to the chuck body 61, and the plate can be better fixed; a plurality of limiting blocks 612 are arranged on the inner wall of the sliding groove 611, and the limiting blocks 612 are fixed on the inner wall of the sliding groove 611; at the beginning, because the hemisphere 72 is located between two adjacent limiting blocks 612, the limiting blocks 612 limit the hemisphere 72, so that the movable chuck 63 cannot move relative to the chuck body 61; when the vertical distance between the movable chuck 63 and the fixed chuck 62 needs to be adjusted, the movable chuck 63 is pressed downwards or pulled upwards, at this time, the hemisphere 72 is abutted against the limiting block 612, meanwhile, the limiting block 612 generates a pressure action on the hemisphere 72, the first spring 71 deforms under the pressure action, and thus the hemisphere 72 enters the limiting groove, so that the movable chuck 63 can move relative to the fixed chuck 62, the pressing or pulling of the movable chuck 63 is stopped after the distance is adjusted to a proper distance, at this time, the limiting block 612 does not exert a pressure action on the hemisphere 72, and thus, the hemisphere 72 is limited again by the elastic force of the first spring 71 and between the two adjacent limiting blocks 612, and a good fixing effect is achieved on the movable chuck 63.
As a modified specific embodiment, a vertical groove 64 is arranged on the movable chuck 63, and the vertical groove 64 is communicated with a limiting groove; a connecting column 74 is arranged on the side surface of the column body 73, which is far away from the hemisphere 72, and the first spring 71 is sleeved on the connecting column 74; the movable chuck 63 is also provided with an inserting rod 65 for inserting the vertical groove 64; when the insertion rod 65 is inserted into the vertical groove 64, it is abutted against the connection post 74.
Through the technical scheme: after the vertical distance between the movable chuck 63 and the fixed chuck 62 is adjusted, the inserted link 65 is inserted into the vertical slot 64, so that the inserted link 65 is abutted against the connecting column 74; at this time, even if the movable chuck 63 is pressed downward or pulled upward, the movable chuck 63 cannot move relative to the fixed chuck 62; because the inserted link 65 is in contact with the connecting column 74 at this time, even if the limiting blocks 612 exert pressure on the semi-sphere 72, the connecting column 74 cannot enter the vertical groove 64, and the semi-sphere 72 cannot enter the limiting groove and can only be limited between the two adjacent limiting blocks 612 all the time, so that the stability of the plate is ensured, and more accurate data can be obtained conveniently; the phenomenon that under the action of strong wind, the movable chuck 63 moves relative to the fixed chuck 62, the plate 41 cannot be fixed, the plate shakes and the like is avoided, and accordingly data are inaccurate; when the position of the movable chuck 63 relative to the fixed chuck 62 needs to be adjusted again, the position of the movable chuck 63 relative to the fixed chuck 62 can be continuously adjusted by firstly pulling the inserted rod 65 out of the vertical groove 64 and then pressing or pulling the pull rod downwards, which is very convenient.
As a modified specific embodiment, the frame 21 is further provided with a positioning component 8 for fixing the clamp 6; the positioning assembly 8 comprises a positioning column 83 and a second spring 84; a first positioning groove 81 is formed in the frame 21, and a second positioning groove 82 communicated with the first positioning groove 81 is formed in the clamp body 61; the positioning column 83 is located in the first positioning groove 81, one end of the positioning column 83 is inserted into the second positioning groove 82, and the other end extends out of the first positioning groove 81; one end of the second spring 84 is fixedly connected with the inner wall of the first positioning groove 81, the other end of the second spring 84 is fixedly connected with the positioning column 83, and the second spring 84 keeps the positioning column 83 inserted into the second positioning groove 82.
Through the technical scheme: before the rotating column 5 is rotated, the positioning column 83 is pulled out of the second positioning groove 82; then the rotating column 5 is rotated to adjust the plate to be vertical to the bottom plate; after the adjustment is completed, the positioning column 83 is loosened, the positioning column 83 is reinserted into the second positioning groove 82 under the elastic action of the second spring 84, the clamp body 61 is fixed, the plate is kept perpendicular to the ground, and the wind resistance performance of the subsequent plate can be conveniently detected; the structure is simple and practical.
A method for detecting wind resistance of a plate comprises the following steps:
the method comprises the following steps: placing a wood board to be measured on the frame 21, and then adjusting the relative distance between the movable clamp 63 and the fixed clamp 62 according to the thickness of the wood board; fixing the board to be measured after the adjustment is finished, and then cutting the board to be measured into a plurality of boards with the same size;
step two: the fixing strip is separated from the second hinge plate 32, then one of the frames 21 is held by a hand to be lifted relative to the ground, the frames 21 and the frames 21 are separated from each other until the held frame 21 is lifted to a designated height, and then the rotating block 42 is rotated to be fixed;
step three: rotating the rotating column 5 to adjust the wood plate to be vertical to the ground from being parallel to the ground; and after the adjustment is completed, the fan is turned on to perform a wind resistance test.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (7)
1. The utility model provides a device for wind-tunnel detects panel wind resistance performance which characterized in that: comprises a placing component (2), a bracket (4) for fixing the placing component (2) and a connecting component (3) for connecting the placing component (2) and the bracket (4); the placing assembly (2) comprises a plurality of frames (21) for placing plates, the connecting assembly (3) comprises a first hinged plate (31) and a second hinged plate (32), connecting pieces (321) are arranged on one sides of the frames (21), one end of each connecting piece (321) is fixedly connected with the corresponding frame (21), the other end of each connecting piece is hinged to the corresponding second hinged plate (32), and one side, away from the corresponding connecting piece (321), of each frame (21) is hinged to the corresponding first hinged plate (31); the first hinge plate (31) and the second hinge plate (32) are arranged in parallel, and the first hinge plate (31) is positioned above the second hinge plate (32); the bracket (4) is hinged with the second hinged plate (32), and the bracket (4) is movably connected with the first hinged plate (31); when the frames (21) are pulled upwards, the frames (21) are separated from each other, and the first hinge plate (31) and the second hinge plate (32) are inclined relative to the frames (21) and are kept parallel to each other; the frame (21) is also provided with a rotating assembly (22) used for enabling the plate to be vertical relative to the ground.
2. The device for wind tunnel detection of wind resistance of plates according to claim 1, wherein: a sliding strip (311) is arranged on the first hinge plate (31), and a waist-shaped hole (312) is arranged on the sliding strip (311); a fixing column (41) is arranged on the bracket (4), the fixing column (41) is positioned in the waist-shaped hole (312) and is connected with the sliding strip (311) in a sliding manner, and an external thread is arranged on the fixing column (41); a rotating block (42) used for fixing a sliding strip (311) is arranged on one side, away from the support (4), of the fixing column (41), the rotating block (42) is sleeved on the fixing column (41), an internal thread meshed with the external thread is arranged in the rotating block (42), and the sliding strip (311) is located between the support (4) and the rotating block (42).
3. The device for wind tunnel detection of wind resistance of plates according to claim 2, wherein: the hinge plate is characterized in that a fastening strip (313) is arranged on the first hinge plate (31), the fastening strip (313) is hinged to the first hinge plate (31), an insertion hole (314) is formed in one end, away from the first hinge plate (31), of the fastening strip (313), and an insertion column (322) used for being inserted into the insertion hole (314) is arranged on the second hinge plate (32).
4. A device for wind tunnel detection of wind resistance of sheet material according to claim 1, 2 or 3, wherein: the rotating assembly (22) comprises a rotating column (5) and a fixing clamp (6), and the rotating column (5) is rotatably connected with the frame (21); the fixed clamp (6) comprises a clamp body (61), a fixed clamp head (62) and a movable clamp head (63); the rotating column (5) is fixedly connected with the clamp body (61); the fixed chuck (62) and the movable chuck (63) are both positioned on one side of the chuck body (61) departing from the rotating column (5), and the fixed chuck (62) is positioned below the movable chuck (63); the fixed chuck (62) is fixedly connected with the clamp body (61), and the movable chuck (63) is connected with the clamp body (61) in a sliding manner.
5. The device for wind tunnel detection of wind resistance of plates according to claim 4, wherein: a sliding groove (611) is formed in the side wall, away from the rotating column (5), of the clamp body (61), and a sliding block used for sliding in the sliding groove (611) is arranged on the movable clamp head (63); a plurality of zigzag limiting blocks (612) are arranged on the inner wall of the sliding groove (611), and limiting components for limiting the movement of the brake chuck (63) are arranged on the sliding blocks; one side of the sliding block, which is far away from the movable chuck (63), is provided with a limiting groove, and the limiting assembly is positioned in the limiting groove; the limiting assembly comprises a first spring (71), a cylinder (73) and a hemisphere (72); one end of the first spring (71) is fixedly connected with the bottom wall of the limiting groove, and the other end of the first spring is fixedly connected with the column body (73); the hemisphere (72) is located on one side, away from the first spring (71), of the column body (73), and part of the hemisphere is exposed out of the limiting groove, and the first spring (71) is used for keeping the hemisphere (72) limited between two adjacent limiting blocks (612).
6. The device for wind tunnel detection of wind resistance of plates according to claim 5, wherein: a vertical groove (64) is formed in the movable chuck (63), and the vertical groove (64) is communicated with the limiting groove; a connecting column (74) is arranged on the side surface of the column body (73) departing from the hemispheroid (72), and the first spring (71) is sleeved on the connecting column (74); the movable chuck (63) is also provided with an inserted rod (65) for being inserted into the vertical groove (64); when the inserted rod (65) is inserted into the vertical groove (64), the inserted rod is abutted against the connecting column (74).
7. The device for wind tunnel detection of wind resistance of plates according to claim 6, wherein: the frame (21) is also provided with a positioning component (8) for fixing the clamp (6); the positioning assembly (8) comprises a positioning column (83) and a second spring (84); a first positioning groove (81) is formed in the frame (21), and a second positioning groove (82) communicated with the first positioning groove (81) is formed in the clamp body (61); the positioning column (83) is positioned in the first positioning groove (81), one end of the positioning column (83) is inserted into the second positioning groove (82), and the other end of the positioning column extends out of the first positioning groove (81); one end of the second spring (84) is fixedly connected with the inner wall of the first positioning groove (81), the other end of the second spring is fixedly connected with the positioning column (83), and the second spring (84) keeps the positioning column (83) inserted into the second positioning groove (82).
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| CN105021371A (en) * | 2015-07-27 | 2015-11-04 | 中国航空工业集团公司哈尔滨空气动力研究所 | Flat model apparatus applied in wind tunnel PIV boundary layer measurement and measuring method |
| CN205130722U (en) * | 2015-11-24 | 2016-04-06 | 刘文玉 | Novel blackboard |
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| CN108330984B (en) * | 2018-01-30 | 2024-02-02 | 中国华冶科工集团有限公司 | Assembled cat ladder with adjustable pedal angle |
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