CN112014063A - A stores pylon for wind-tunnel test - Google Patents
A stores pylon for wind-tunnel test Download PDFInfo
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- CN112014063A CN112014063A CN202011199991.2A CN202011199991A CN112014063A CN 112014063 A CN112014063 A CN 112014063A CN 202011199991 A CN202011199991 A CN 202011199991A CN 112014063 A CN112014063 A CN 112014063A
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- main body
- screw
- hanger
- fixedly connected
- wind tunnel
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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
- G01M9/062—Wind tunnel balances; Holding devices combined with measuring arrangements
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Abstract
The invention relates to the field of calibration and measurement of a wind tunnel test flow field, in particular to a hanger for a wind tunnel test, wherein a probe is fixed in a test section in the wind tunnel test. The rack mechanism is provided with a fixing hole, one end of the rack mechanism is connected with the first brake piece, and the other end of the rack mechanism is connected with the second brake piece through a telescopic mechanism. The invention has convenient installation and larger installation position range, and avoids the arrangement of the installation hole on the wall surface of the wind tunnel.
Description
Technical Field
The invention relates to the field of calibration and measurement of a wind tunnel test flow field, in particular to a hanger for a wind tunnel test, wherein a probe is fixed in a test section in the wind tunnel test.
Background
According to the regulations of national military standards, the low-speed wind tunnel flow field calibration items mainly comprise dynamic pressure, a directional field, axial static pressure gradient, airflow temperature, turbulence and the like. At present, parameters of different positions of a wind tunnel test section are mainly measured through a probe. This inevitably requires the probes to be immobilised at a plurality of different stations. The probe fixing device is generally provided with a pressure measuring rake, a pipe rack, a moving rack and the like.
The pressure measuring rake and the pipe rack are generally fixed on the wall of the hole through bolts, and fixing holes for connecting the pressure measuring rake and the pipe rack are required to be formed in the wall of the hole, so that the wall of the hole is inevitably damaged; and the positions of the machine glass bottom plate, the structural beam and the like in the wind tunnel are not beneficial to the establishment of the fixing hole.
The moving frame needs to be provided with a slide rail, the relative fixing position of the slide rail and the moving frame needs to be ensured, a driving and controlling system is possibly needed, the installation requirement is high, and the system is complex.
Disclosure of Invention
The invention provides a hanging frame for a wind tunnel test, which is convenient to install, has a wider installation position range and avoids the arrangement of installation holes on the wall surface of a wind tunnel.
The invention is realized by the following technical scheme:
a hanging rack for a wind tunnel test comprises a hanging rack mechanism, a first brake piece and a second brake piece, wherein a fixing hole is formed in the hanging rack mechanism, one end of the hanging rack mechanism is connected with the first brake piece, and the other end of the hanging rack mechanism is connected with the second brake piece through a telescopic mechanism.
Further, the hanger mechanism comprises a hanger main body, a lifting component and a connecting plate, wherein the hanger main body is connected with the lifting component, the lifting component is connected with the connecting plate, and the connecting plate is provided with a fixing hole.
Further, the lifting component is arranged in the hanger main body, and/or the connecting plate is arranged in the hanger main body.
Further, the hanging rack main body is connected with a lifting component, the lifting component is connected with a connecting frame, the two opposite ends of the connecting frame are connected with the hanging rack main body in a sliding mode, and the connecting frame is fixedly connected with a connecting plate.
Further, the lifting component comprises a worm gear and a screw rod, the screw rod is fixedly connected to the hanger main body, a worm gear of the worm gear is in threaded connection with the screw rod, a shell is coated outside the worm gear, and the shell is connected with the connecting hanger;
the shell is provided with a first driving hole for driving the worm of the worm gear to rotate;
and a driving hole II communicated with the driving hole I is arranged on the connecting plate.
Further, the hanging rack mechanism further comprises a connecting frame, the hanging rack body is connected with the connecting frame in a sliding mode, and the connecting frame is fixedly connected with a connecting plate.
Further, the connecting plates are arranged in two numbers, and the connecting plates are symmetrically arranged on two sides of the hanger main body.
Furthermore, the telescopic mechanism comprises a screw telescopic sleeve, a screw, a disc and a thrust bearing, the hanger main body is fixedly connected with the screw telescopic sleeve, the screw telescopic sleeve is spirally connected with the screw, the screw is connected with the fixedly connected disc, the disc is fixedly connected with the thrust bearing, and the bearing is fixedly connected with a second brake pad.
Furthermore, the telescopic mechanism comprises a screw telescopic sleeve, a screw, a disc, a thrust bearing, a sliding table I and a fixed table, the brake pad II is fixedly connected with the fixed table, the fixed table is fixedly connected with the thrust bearing, the thrust bearing is fixedly connected with the disc, the disc is fixedly connected with the screw, the screw is connected in the screw telescopic sleeve, and the screw telescopic sleeve is fixedly connected with the hanger main body;
one end of the sliding table is fixedly connected with the hanging rack main body, and the other end of the sliding table is slidably connected with the fixing table.
Further, the first brake block and the second brake block are both made of rubber.
By adopting the technical scheme, the invention has the following advantages:
1. the invention has convenient installation and larger installation position range, and avoids the arrangement of the installation hole on the wall surface of the wind tunnel.
2. The telescopic mechanism arranged in the invention can adapt to wind tunnels with different heights, and has wider application range; the first brake piece and the second brake piece can be connected with the wind tunnel more stably by adjusting the telescopic mechanism; the telescopic mechanism is pre-tightened to squeeze or release the space between the first brake block and the second brake block and the wall of the hole, so that the effect of convenient installation and disassembly is achieved.
3. The height of the connecting plate is adjusted by the lifting component, so that the height of the fixing hole in the connecting plate is adjusted, and the height of the probe to be connected is reached; the adjusting mode is simple, and the damage of the wind tunnel is also avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention or in the description of the prior art will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the lift member of the present invention;
FIG. 3 is a schematic structural view of a connecting plate according to the present invention;
FIG. 4 is a schematic structural view of the telescoping mechanism of the present invention;
FIG. 5 is a first schematic structural diagram according to an embodiment of the present invention;
FIG. 6 is a second schematic structural diagram according to an embodiment of the present invention;
FIG. 7 is a third schematic structural diagram in accordance with an embodiment of the present invention;
FIG. 8 is a fourth schematic structural diagram according to an embodiment of the present invention;
FIG. 9 is a fifth schematic structural view according to an embodiment of the present invention;
FIG. 10 is a sixth schematic structural view of an embodiment of the present invention;
in the drawings: 10. the rack comprises a rack mechanism 11, a fixing hole 12, a rack body 121, a sliding groove 13, a lifting component 131, a worm gear, a worm 132, a screw rod 133, a shell 1331, a first driving hole 14, a connecting plate 141, a second driving hole 142, a connecting hole 15, a connecting frame 151, a second sliding table 20, a first brake block 30, a second brake block 40, a telescopic mechanism 41, a screw telescopic sleeve 42, a screw rod 43, a disc 44, a thrust bearing 45, a first sliding table 46, a fixing table 50, a linear slide rail 51, a sliding block 60, a limiting baffle plate 70, a signal transmission device 80, a pressure measuring rake 90 and a probe.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it should be noted that when an element is referred to as being "fixed" or "disposed" to another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1, the embodiment provides a hanger for a wind tunnel test, which includes a hanger mechanism 10, a first brake pad 20 and a second brake pad 30, wherein a fixing hole 11 is formed in the hanger mechanism 10, one end of the hanger mechanism 10 is connected to the first brake pad 20, and the other end of the hanger mechanism 10 is connected to the second brake pad 30 through a telescopic mechanism 40.
The specific implementation mode is as follows: the first brake block 20 and the second brake block 30 are tightly attached to the wall of the wind tunnel to achieve the fixing effect by adjusting the extension of the telescopic mechanism 40.
Further, the hanger mechanism 10 includes a hanger main body 12, a lifting member 13 and a connecting plate 14, the lifting member 13 is connected to the hanger main body 12, the lifting member 13 is connected to the connecting plate 14, and the connecting plate 14 is provided with a fixing hole 11. The lifting component 13 drives the hanger main body 12 to slide, so that the height of the hanger main body 12 can be adjusted in the using process, and the height of the probe 90 required to be connected is reached.
The lifting direction of the lifting member 13 coincides with the extending and contracting direction of the extending and contracting mechanism 40.
The position of the fixing holes 11 is not limited, and preferably, the fixing holes 11 are uniformly formed on the hanger main body 12.
Further, the lifting member 13 is provided in the hanger main body 12, and/or the connection plate 14 is provided in the hanger main body 12.
To arrange the lifting member 13 and the connecting plate 14 in the hanger body 12, a groove or a hole may be formed in the hanger body 12; the slot or hole for connecting the connecting plate 14 needs to be arranged along the length direction of the whole hanger main body 12, so that the connecting plate 14 has enough moving space, and the length of the connecting plate 14 needs to be ensured to be smaller than the length of the hole or slot for connecting the connecting plate 14, which is arranged on the hanger main body 12.
Furthermore, the hanger main body 12 is connected with a lifting component 13, the lifting component 13 is connected with a connecting frame 15, two opposite ends of the connecting frame 15 are slidably connected with the hanger main body 12, and a connecting plate 14 is fixedly connected to the connecting frame 15.
The connecting frame 15 is connected with the connecting plate 14, and the connecting plate 14 can be more stable because the connecting frame 15 has larger contact area with the connecting plate 14. Meanwhile, the connecting frame 15 is connected to the hanging rack main body 12 in a sliding mode, the hanging rack has a supporting effect on the connecting frame 15 and the connecting plate 14, and the connecting plate 14 is made to be more stable.
The connection frame 15 and the hanger main body 12 are slidably connected to each other in a manner including: a sliding groove and a second sliding table matched with the sliding groove are directly arranged on the connecting frame 15 and the hanging rack main body 12, as shown in fig. 10, the sliding groove 121 can be arranged on the hanging rack main body 12, and the second sliding table 151 matched with the sliding groove is arranged on the connecting frame 15; similarly, a second sliding table is arranged on the hanger main body 12, and a sliding groove is also arranged on the connecting frame 15.
As shown in fig. 7, alternatively, a linear slide rail 50 may be provided on the hanger main body 12, the slider 51 on the linear slide rail 50 is connected to the connecting frame 15, and a limiting block 60 is provided at an end of the linear slide rail 50, and the limiting block 60 is provided in an L shape. The limiting stopper 60 prevents the slider 51 from sliding out of the slide rail.
As shown in fig. 2, further, the lifting member 13 includes a worm gear 131 and a lead screw 132, the lead screw 132 is fixedly connected to the hanger main body 12, the worm gear of the worm gear 131 is spirally connected to the lead screw, a housing (133) is covered outside the worm gear 131, and the housing 133 is connected to the connecting frame 15;
the shell 133 is provided with a first driving hole 1331 for driving the worm of the worm gear 131 to rotate; the housing 133 is fixed outside the worm gear 131, and the first driving hole 1331 needs to be concentric with the driving hole arranged on the worm gear 131; the housing 133 is slidably connected to the lead screw 132; the shape of the housing 133 is not particularly limited;
and a second driving hole 141 communicated with the first driving hole 1331 is formed in the connecting plate 14.
When the position of the hole of the connecting plate 14 needs to be adjusted, an adjusting tool is inserted into the first driving hole 1331 and the second driving hole 141, the adjusting tool is rotated to enable the worm of the worm gear 131 to rotate, the worm drives the worm gear to rotate, the worm gear moves relative to the screw rod 132, the worm gear moves to drive the shell 133 to move, the shell 133 drives the connecting frame 15 to move, and the connecting frame drives the connecting plate 14 to move, so that the purpose is achieved; adjustment of the vertical position of the connecting plate 14.
It should be noted that, the first driving hole 1331 and the second driving hole 141 are both provided with hexagonal holes, which is convenient for the use of the adjusting tool, and certainly, the driving holes are not necessarily hexagonal holes, and holes with other shapes are ensured to drive the turbine 131. Such as pentagonal holes, 4-cornered holes, etc., or irregularly shaped holes.
Of course, the adjusting tool can be matched with the shapes of the first driving hole 1331 and the second driving hole 141, and can drive the turbine 131 to rotate. The choice of such adjustment means is common knowledge to the person skilled in the art.
Further, the hanger mechanism 10 further comprises a connecting frame 15, the hanger main body 12 is slidably connected with the connecting frame 15, and the connecting plate 14 is fixedly connected to the connecting frame 15.
It should be noted that the position of the connecting frame 15 can be various, and the following cases are listed:
(1) one connecting frame 15 is arranged, the middle part of the connecting frame 15 is connected to the shell 133, the upper surface of the middle part of the connecting frame 15 is connected with the connecting plate 14, and two ends of the connecting frame 15 are connected to the hanger main body 12 in a sliding manner;
(2) one connecting frame 15 is arranged, the middle part of the connecting frame 15 is not connected with the shell 133 (namely the connecting frame 15 and the lifting part 13 are respectively positioned at two sides of the hanger main body), the upper surface of the connecting frame 15 is connected with the connecting plate 14, and two ends of the connecting frame 15 are connected to the hanger main body 12 in a sliding manner;
(3) the number of the connecting frames 15 is two, and the connecting plates 14 are symmetrically arranged on two sides of the hanger main body 12. The lower surface of the connection plate 14 on the same side as the elevating member 13 may be connected to the housing 133. As shown in fig. 5, the connection plate 14 is not connected to the connection frame 15, which is for the convenience of viewing the structure of the lifting member 13, and the connection plate 14 should be connected to the connection frame 15.
Of course the number of webs 14 is not limited to one or two as described above.
Further, two connecting plates 14 are arranged, and the connecting plates 14 are symmetrically arranged on two sides of the hanger main body 12.
When there are two connecting plates 14, a groove is opened on the hanger main body 12, and the connecting plates 14 are disposed at both ends of the through groove.
In the case of two connection plates 14, only one of the connection plates 14 may be connected to the lifting member 13, or both of them may be connected to the lifting member 13.
As shown in fig. 3, a schematic structural diagram of the connecting plate 14 is shown, and the connecting plate 14 further has a connecting hole 142 connected to the connecting frame 15.
As shown in fig. 4, the telescoping mechanism 40 further includes a screw telescoping sleeve 41, a screw 42, a disc 43, and a thrust bearing 44, the hanger body 12 is fixedly connected to the screw telescoping sleeve 41, the screw telescoping sleeve 41 is spirally connected to the screw 42, the screw 42 is fixedly connected to the disc 43, the disc 43 is fixedly connected to the thrust bearing 44, and the bearing is fixedly connected to the second brake pad 30.
Further, the telescopic mechanism 40 comprises a screw telescopic sleeve 41, a screw 42, a disc 43, a thrust bearing 44, a sliding table I45 and a fixed table 46, the second brake pad 30 is fixedly connected with the fixed table 46, the fixed table 46 is fixedly connected with the thrust bearing 44, the thrust bearing 44 is fixedly connected with the disc 43, the disc 43 is fixedly connected with the screw 42, the screw 42 is connected in the screw telescopic sleeve 41, and the screw telescopic sleeve 41 is fixedly connected with the hanger main body 12;
one end of the first sliding table 45 is fixedly connected with the hanger main body 12, and the other end of the first sliding table is slidably connected with the fixed table 46. Of course, the connection mode of the sliding table 45 and the fixing table 46 also includes the connection mode of the connecting frame 15 and the hanging frame main body 12, and a matching structure is directly arranged for sliding, or the sliding is realized through a linear guide rail.
Wherein, the screw rod telescopic sleeve 41 is provided with a thread matched with the screw rod 42.
As shown in fig. 6, the first sliding table 45 and the fixed table 46 can also be understood as belonging to a part of the hanger main body 12, i.e. the hanger main body 12 is retractable.
Further, the first brake block 20 and the second brake block 30 are both made of rubber. The rubber is beneficial to the joint with the contact surface of the wind tunnel; the rubber has the advantages of large friction coefficient, low price and good processing.
Of course, other materials such as asbestos, etc., or a grease-based brake material (added with metal copper or iron), a powder metallurgy brake material (sintered by metal such as iron or copper), a carbon/carbon composite brake material, a ceramic-based brake material for automobiles; the materials all have the advantage of a high coefficient of friction.
Furthermore, scale marks are arranged on the hanger main body 12, so that the height precision of the connecting plate 14 is improved.
As shown in fig. 8 and 9, in actual use, a pressure measuring rake 80 is connected to the fixing hole 11, and a probe 90 is connected to the pressure measuring rake 80.
Further, a signal transmission device 70 can be arranged to transmit the pressure signal measured by the probe 90, a groove can be formed in the hanger main body 12, and the signal transmission device 70 is arranged in the hanger main body 12; of course, the signal transmission device 70 can be disposed at any position outside the rack main body 12 as long as the signal transmission device 70 can transmit the data measured by the probe 90 to the outside.
In fig. 8 and 9, the connection plate 14 is not connected to the connection frame 15, and for the sake of easy understanding of the lifting member 13, the connection plate 14 should be actually connected to the connection frame 15.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a stores pylon for wind tunnel test which characterized in that: the brake device comprises a hanger mechanism (10), a first brake block (20) and a second brake block (30), wherein a fixing hole (11) is formed in the hanger mechanism (10), one end of the hanger mechanism (10) is connected with the first brake block (20), and the other end of the hanger mechanism (10) is connected with the second brake block (30) through a telescopic mechanism (40).
2. The pylon for a wind tunnel test according to claim 1, wherein: the hanger mechanism (10) comprises a hanger main body (12), a lifting part (13) and a connecting plate (14), the lifting part (13) is connected to the hanger main body (12), the lifting part (13) is connected to the connecting plate (14), and a fixing hole (11) is formed in the connecting plate (14).
3. The pylon for the wind tunnel test according to claim 2, wherein: the lifting component (13) is arranged in the hanger main body (12), and the connecting plate (14) is arranged in the hanger main body (12).
4. The pylon for the wind tunnel test according to claim 2, wherein: the hanger is characterized in that the hanger main body (12) is connected with a lifting part (13), the lifting part (13) is connected with a connecting frame (15), the two opposite ends of the connecting frame (15) are slidably connected with the hanger main body (12), and the connecting frame (15) is fixedly connected with a connecting plate (14).
5. The pylon for the wind tunnel test according to claim 4, wherein: the lifting component (13) comprises a worm gear (131) and a lead screw (132), the lead screw (132) is fixedly connected to the hanger main body (12), a worm wheel of the worm gear (131) is in threaded connection with the lead screw, a shell (133) is coated outside the worm gear (131), and the shell (133) is connected with the connecting rack (15);
a first driving hole (1331) for driving the worm of the worm gear (131) to rotate is formed in the shell (133);
and a second driving hole (141) communicated with the first driving hole (1331) is formed in the connecting plate (14).
6. A pylon for a wind tunnel test according to claim 2 or 4, wherein: the hanger mechanism (10) further comprises a connecting frame (15), the hanger main body (12) is connected with the connecting frame (15) in a sliding mode, and the connecting frame (15) is fixedly connected with a connecting plate (14).
7. The pylon for the wind tunnel test according to claim 2, wherein: the two connecting plates (14) are symmetrically arranged on two sides of the hanger main body (12).
8. The pylon for a wind tunnel test according to claim 1, wherein: the telescopic mechanism (40) comprises a screw telescopic sleeve (41), a screw (42), a disc (43) and a thrust bearing (44), the hanger main body (12) is fixedly connected with the screw telescopic sleeve (41), the screw telescopic sleeve (41) is in threaded connection with the screw (42), the screw (42) is connected with the disc (43), the disc (43) is fixedly connected with the thrust bearing (44), and the bearing is fixedly connected with the second brake pad (30).
9. The pylon for a wind tunnel test according to claim 1, wherein: the telescopic mechanism (40) comprises a screw telescopic sleeve (41), a screw (42), a disc (43), a thrust bearing (44), a sliding table I (45) and a fixing table (46), the brake block II (30) is fixedly connected with the fixing table (46), the fixing table (46) is fixedly connected with the thrust bearing (44), the thrust bearing (44) is fixedly connected with the disc (43), the disc (43) is fixedly connected with the screw (42), the screw (42) is connected in the screw telescopic sleeve (41), and the screw telescopic sleeve (41) is fixedly connected with the hanger main body (12);
one end of the first sliding table (45) is fixedly connected with the hanger main body (12), and the other end of the first sliding table is slidably connected with the fixed table (46).
10. The pylon for a wind tunnel test according to claim 1, wherein: the first brake block (20) and the second brake block (30) are both made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011199991.2A CN112014063B (en) | 2020-11-02 | 2020-11-02 | A stores pylon for wind-tunnel test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011199991.2A CN112014063B (en) | 2020-11-02 | 2020-11-02 | A stores pylon for wind-tunnel test |
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| CN112014063A true CN112014063A (en) | 2020-12-01 |
| CN112014063B CN112014063B (en) | 2021-07-16 |
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