CN210862427U - Feature extraction device and feature extraction system of axial flow fan blade - Google Patents
Feature extraction device and feature extraction system of axial flow fan blade Download PDFInfo
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- CN210862427U CN210862427U CN201921563922.8U CN201921563922U CN210862427U CN 210862427 U CN210862427 U CN 210862427U CN 201921563922 U CN201921563922 U CN 201921563922U CN 210862427 U CN210862427 U CN 210862427U
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Abstract
The utility model provides a characteristic extraction device and a characteristic extraction system of an axial flow fan blade, wherein the characteristic extraction device of the axial flow fan blade comprises a base, a bracket and a measuring component; the bracket is arranged on the base, and the axial flow fan blade is fixed on the bracket; the measuring component is used for measuring parameters of the axial flow fan blade, the measuring component is arranged at least one end of the support and comprises a dial, a vernier caliper and a height gauge. The utility model discloses a set up base, support and measuring component, solve the problem that the characteristic parameter measurement of blade drawed among the prior art, through base, support and measuring component's cooperation, can not receive the different curvatures of leaf type to and the complicated influence of leaf type surface curved surface molding, can effectually measure the characteristic parameter of blade and draw, so that follow-up parameter that provides the blade for processes such as blade design.
Description
Technical Field
The utility model relates to a feature extraction device, concretely relates to feature extraction device and feature extraction system of axial flow fan blade.
Background
Axial-flow fan blades are generally used in fluid machinery such as air conditioning outdoor units and ventilators. At present, the basic structure of a general fan blade comprises a hub serving as a rotating shaft and a plurality of blades radially arranged on the periphery of the hub, the axial flow fan blade is driven to rotate by power, air flows in from the front edge of the blade, and is blown out from the rear edge of the blade after the blade is boosted, so that a pressure surface and a suction surface are formed.
Among the various structures that constitute axial flow blades, the blades are structures that mainly affect the efficiency and noise level of the axial flow blades. Therefore, at present, the design and the improvement of the blade are more, and in the process of designing and simulating the blade, characteristic parameters such as section chord length, installation angle, thickness distribution and the like of the blade need to be analyzed. However, the blade profile has different curvatures, and the surface of the blade profile has a complex curved surface shape, so that the measurement and extraction of the characteristic parameters of the blade are problems to be solved in the field at present.
SUMMERY OF THE UTILITY MODEL
In order to solve at least one of the above problems, the utility model provides a characteristic extraction device of an axial flow fan blade, which comprises a base, a bracket and a measuring component;
the bracket is arranged on the base, and the axial flow fan blade is fixed on the bracket;
the measuring component is used for measuring the parameters of the axial flow fan blade, the measuring component is arranged at least one end of the support and comprises a dial, a vernier caliper and a height gauge.
By adopting the technical scheme, the problem of measuring and extracting the characteristic parameters of the blade in the prior art is solved by arranging the base, the support and the measuring component, the characteristic parameters of the blade can be effectively measured and extracted without the influence of different curvatures of the blade profile and complex surface shape of the blade profile through the matching of the base, the support and the measuring component, so that the subsequent parameters of the blade are provided for the processes of blade design and the like.
Optionally, the number of the measuring assemblies is two, and the two measuring assemblies are respectively arranged at two ends of the support. The structure can simultaneously measure the upper surface and the lower surface of the axial flow fan blade, namely the suction surface and the pressure surface of the axial flow fan blade, and extract characteristic parameters.
Optionally, the dial is connected with the bracket; vernier caliper's one end with the calibrated scale is connected, vernier caliper's the other end is the free end, just vernier caliper uses the center of calibrated scale as the rotation of center. The structure can effectively measure the characteristic parameters of the blade in the axial flow fan through the combination and the matching of the three components. Wherein the vernier caliper is preferably an electronic vernier caliper.
Optionally, the center of calibrated scale is equipped with the boss, be equipped with rotatory hole on the boss, rotatory hole with slide caliper is last the pivot is connected. According to the structure, the vernier caliper can rotate by taking the center of the rotating hole as a rotating center through the matching of the rotating hole and the rotating shaft; by rotating the vernier caliper, the blade height radius of the axial flow fan blade at different rotation angles can be measured, and characteristic parameters are provided for subsequent design and the like.
Optionally, the vernier caliper is provided with a through groove for checking scales on the dial. This kind of structure is convenient for look over the scale on the calibrated scale through leading to the groove, avoids because slide caliper shelters from the scale on the calibrated scale, and leads to the inconvenient condition of reading to the scale to appear. The through groove is preferably arranged along the length direction of the vernier caliper.
Optionally, the feature extraction device includes a scale pointing structure, and the scale pointing structure and the vernier caliper rotate synchronously. This kind of structure, scale directional structure can be the pointer, the utility model discloses a preferred wedge structure of scale directional structure, the quantity of scale directional structure is preferred two, and on slide caliper can be located to two scale directional structures, rotates with slide caliper synchronous, and scale directional structure is the line face contact with the scale mark of calibrated scale, and the bottom of two scale directional structures is on same straight line.
Optionally, one end of the height gauge is connected to the vernier caliper, and the other end of the height gauge is a free end and can be in contact with the surface of the axial-flow fan blade. The height gauge comprises a sleeve and a probe, wherein the probe can stretch out and draw back in the sleeve through a spring, the sleeve is connected with a vernier caliper, and the probe can be in contact with the surface of the axial flow fan blade. The altimeter is preferably an electronic altimeter.
Optionally, the height gauge is connected to a vernier of the vernier caliper. With the structure, the height gauge can move synchronously with the vernier on the vernier caliper.
Optionally, the free end of the height gauge is pointed. I.e. the probe in the altimeter is pointed. According to the structure, the contact area of the probe and the curved surface of the axial flow fan blade is reduced, and the height meter is better matched with the axial flow fan blade.
Optionally, the feature extraction device includes a shaft positioning seat, one end of the shaft positioning seat is detachably disposed on the support, and the other end of the shaft positioning seat is connected with the axial flow fan blade. The structure can set the shaft positioning seat to correspond to the axial-flow fan blades with different sizes, and the axial-flow fan blades with different sizes can be suitable for replacing the shaft positioning seat.
Optionally, the shaft positioning seat comprises a support connecting seat and an axial flow fan blade connecting seat, the support connecting seat is connected with the support, and the axial flow fan blade connecting seat is connected with the axial flow fan blade; the support corresponds the leg joint seat and is equipped with shaft location seat spread groove. According to the structure, the shaft positioning seat is arranged to correspond to the axial flow fan blades with different sizes, specifically, the axial flow fan blade connecting seats in the shaft positioning seat are arranged to correspond to the axial flow fan blades with different sizes, the bracket connecting seats in the shaft positioning seat are arranged to be fixed with different sizes, at the moment, the bracket connecting seats are connected with the bracket, the axial flow fan blade connecting seats with different sizes can correspond to the axial flow fan blades with different sizes, and when characteristic parameters of the axial flow fan blades with different sizes are extracted through measurement, the characteristic parameters can be extracted by detecting the axial flow fan blades with different sizes through replacing the axial flow fan blade connecting seats with different sizes.
Optionally, the bracket connecting seat comprises a bracket connecting seat body and clamping blocks arranged on the periphery of the bracket connecting seat body, and the bracket connecting seat body and the clamping blocks can be detachably mounted in the shaft positioning seat connecting grooves. This kind of structure, fixture block of leg joint seat body week side can prevent to install the dislocation in the installation at leg joint seat to and can the rotation of effectual restriction leg joint seat, avoid axial compressor fan blade installation back, at the rotatory in-process of slide caliper, axial compressor fan blade synchronous rotation, and then cause the unsafe condition of parameter of measuring and drawing.
Optionally, a distance between the center of the base and the bottom of the bracket is L, the range of the vernier caliper is L0, and a relationship between the distance L and the range L0 is: l > 0.2 × L0. The structure limits the distance L between the center of the base and the bottom of the support and the measuring range L0 of the vernier caliper, wherein L is more than 0.2L 0.
Optionally, the bracket is formed from a high carbon steel or alloy steel material. The structure ensures that the support has enough rigidity, and further ensures that the whole feature extraction device cannot deform.
The utility model provides a feature extraction device of axial fan blade, it includes above-mentioned arbitrary item feature extraction device to and the axial fan blade, the axial fan blade includes wheel hub and locates wheel hub's last blade, wheel hub is fixed in on the feature extraction device.
Optionally, when the feature extraction device includes a shaft positioning seat and the shaft positioning seat includes the axial flow fan blade connecting seat, a mounting groove is formed in the hub and corresponds to the axial flow fan blade connecting seat in the shaft positioning seat.
Drawings
Fig. 1 is a schematic perspective view of a feature extraction device for an axial-flow fan blade according to the present invention;
FIG. 2 is a schematic structural diagram of the dial of the present invention;
FIG. 3 is a schematic structural view of the vernier caliper of the present invention;
FIG. 4 is a schematic view of the connection structure of the dial and the vernier caliper according to the present invention;
fig. 5 is a schematic structural view of the through groove and the scale directing structure of the present invention;
FIG. 6 is a cross-sectional view A-A of FIG. 5;
fig. 7 is a schematic structural view of the altimeter of the present invention;
fig. 8 is a schematic structural view of the shaft positioning seat of the present invention;
fig. 9 is a schematic structural view of the connecting groove of the bracket middle shaft positioning seat of the present invention;
fig. 10 is a schematic structural diagram of a use state of the feature extraction device for an axial flow fan blade according to the present invention;
fig. 11 is a first simulation schematic diagram of the utility model after the coordinate data is imported into the three-dimensional software;
fig. 12 is a second simulation schematic diagram of the three-dimensional software with the coordinate data imported.
Description of reference numerals:
100-feature extraction means; 110-a base; 120-a scaffold; 121-shaft positioning seat connecting grooves; 130-a measurement component; 131-a dial; 1311-boss; 1312-a spin hole; 132-a vernier caliper; 1321-a spindle; 1322-calipers; 1323-cursor; 1324-pass through slot; 133-altimeter; 1331-a sleeve; 1332-probe; 140-scale pointing structure; 150-shaft positioning seats; 151-bracket connection mount; 1511-bracket connecting seat body; 1512-a fixture block; 152-axial flow fan blade connecting seat; 200-axial flow fan blades; 210-a hub; 220-blade.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
As shown in one of fig. 1 to 12, the present invention provides a feature extraction device for an axial flow fan blade, which includes a base 110, a bracket 120, and a measurement assembly 130;
the bracket 120 is arranged on the base 110, and the axial flow fan blade 200 is fixed on the bracket 120;
the measuring assembly 130 is used for measuring parameters of the axial-flow fan blade 200, the measuring assembly 130 is arranged at least one end of the support 120, the measuring assembly 130 specifically comprises a dial 131, a vernier caliper 132 and an altimeter 133, and the measuring assembly 130 comprises the dial 131, the vernier caliper 132 and the altimeter 133.
The utility model discloses a set up base 110, support 120 and measuring component 130, solve the problem that the characteristic parameter measurement of blade 220 among the prior art drawed, through base 110, support 120 and measuring component 130's cooperation, can not receive the different curvatures of blade profile to and the complicated influence of blade profile surface curved surface molding, can effectually measure the characteristic parameter to blade 220 and draw, so that follow-up processes such as blade 220 design provide the parameter of blade 220.
The utility model discloses dial 131, slide caliper 132 and altimeter 133 in the measuring component 130 can connect in order, also can be connected with base 110 or support 120 through connection structure respectively, the utility model discloses dial 131, slide caliper 132 and altimeter 133 in the preferred measuring component 130 are for connecting in order, and this kind of structure, in adjustment slide caliper 132, dial 131 and altimeter 133 also can work, the operation of being convenient for.
The utility model discloses the quantity of measuring component 130 is preferred two sets of, locates the both ends of support 120 respectively. By adopting the structure, the upper surface and the lower surface of the axial flow fan blade 200, namely the suction surface and the pressure surface of the axial flow fan blade 200, can be measured at the same time, and characteristic parameters can be extracted. The support 120 is preferably provided with an avoiding portion in the middle of the support 120, and the avoiding portion can be set to be an inverted "C" type structure or the like, and is used for avoiding the axial flow fan blade 200 when the axial flow fan blade 200 is fixed on the support 120, so that the axial flow fan blade 200 can rotate in the process of measuring and extracting characteristic parameters.
In the present embodiment, the characteristic parameters of the blade 220 in the axial flow fan blade 200 can be effectively measured by combining and matching the dial 131, the vernier caliper 132 and the height gauge 133, wherein the specific connection mode of the dial 131 and the vernier caliper 132 is as follows:
the dial 131 is preferably configured to have a scale on the surface of the dial 131, the scale is an angle scale, and the dial 131 is connected to the bracket 120; the vernier caliper 132 preferably includes a caliper 1322 and a vernier 1323, the vernier 1323 is movable on the caliper 1322, the caliper 1322 is provided with a scale which is a length scale, one end of the caliper 1322 in the vernier caliper 132 is connected to the scale 131, the other end of the caliper 1322 is a free end, and the caliper 1322 rotates with the center of the scale 131 as a rotation center.
When the number of the measuring assemblies 130 is two, the specific structure of the measuring assembly 130 at the bottom end of the bracket 120 is:
the scale disc 131 and the base 110 can be integrally formed, specifically, the base 110 is provided with a step-shaped structure, and the scale disc 131 is arranged on the upper surface of the first step; the vernier caliper 132 and the dial 131 are both arranged at the bottom end of the bracket 120, and the vernier caliper 132 is rotationally fixed on the dial 131;
the measuring assembly 130 located at the top end of the support 120 has the following specific structure:
the dial 131 is arranged at the top end of the bracket 120; the vernier caliper 132 is rotatably fixed to the dial 131.
The vernier caliper 132 is preferably an electronic vernier caliper 132.
In the present embodiment, the vernier caliper 132 and the dial 131 are specifically connected as follows:
the dial 131 has a boss 1311 at the center thereof, and the boss 1311 has a rotation hole 1312, and the rotation hole 1312 is connected to a rotation shaft 1321 of the caliper 132. Wherein, the inner diameter of the rotation hole 1312 on the boss 1311 of the dial 131 is equal to the outer diameter of the rotation shaft 1321 on the vernier caliper 132. In this configuration, the rotation hole 1312 is engaged with the rotation shaft 1321, and the caliper 132 can rotate around the center of the rotation hole 1312 as a rotation center; by rotating the vernier caliper 132, the blade height radius of the axial flow fan blade 200 at different rotation angles can be measured, and characteristic parameters are provided for subsequent design and the like.
In the present embodiment, in order to prevent the vernier caliper 132 from blocking the scale on the scale plate 131, the vernier caliper 132 is provided with a through groove 1324 for viewing the scale on the scale plate 131. This kind of structure is convenient for look over the scale on the calibrated scale 131 through logical groove 1324, avoids because slide caliper 132 shelters from the scale on the calibrated scale 131, and leads to the inconvenient condition appearance that reads the scale. The through slot 1324 is preferably provided along the length direction of the vernier caliper 132.
In the present embodiment, in order to further accurately read the scale on the scale plate 131, the feature extraction device 100 includes a scale directing structure 140, and the scale directing structure 140 rotates in synchronization with the vernier caliper 132. In this kind of structure, scale indicating structure 140 can be the pointer, the utility model discloses a scale indicating structure 140 is preferred to be wedge structure, and scale indicating structure 140's quantity is preferred two, and on slide caliper 132 can be located to two scale indicating structure 140, rotates with slide caliper 132 is synchronous, and scale indicating structure 140 is the line face contact with the scale surface of calibrated scale 131, and two scale indicating structure 140's bottom is on same straight line.
The height gauge 133 and the vernier caliper 132 are connected in the following specific manner:
one end of the height gauge 133 is connected to the vernier caliper 132; the other end of the height gauge 133 is a free end and can contact with the surface of the axial-flow fan blade 200.
Specifically, the height gauge 133 includes a sleeve 1331 and a probe 1332, the probe 1332 is retractable in the sleeve 1331 through a spring, the sleeve 1331 is connected to the vernier caliper 132, and the probe 1332 can contact with the surface of the axial-flow fan blade 200.
In the present embodiment, the height gauge 133 is connected to the vernier 1323 of the vernier caliper 132. With this structure, the height gauge 133 can move in synchronization with the cursor 1323 on the vernier caliper 132.
In the present embodiment, the free end of the height gauge 133 is a pointed end. I.e. the probe 1332 in the height gauge 133 is pointed. With the structure, the contact area of the probe 1332 and the curved surface of the axial flow fan blade 200 is reduced, and the height meter 133 and the axial flow fan blade 200 are better matched; if the free end of the height gauge 133 is a flat head, that is, the probe 1332 in the height gauge 133 is a flat head, the contact surface between the probe 1332 and the axial flow fan blade 200 is a plane, when the surface of the axial flow fan blade 200 is curved, a gap exists between the contact part between the probe 1332 and the axial flow fan blade 200, which causes an error to be large when the height is measured.
In summary, the preferable connection method between the height gauge 133 and the vernier caliper 132 is as follows: the height gauge 133 is fixed on the vernier caliper 132, and a probe 1332 in the height gauge 133 can be in contact with the surface of the axial-flow fan blade 200.
The middle altimeter 133 is preferably an electronic altimeter 133.
In some embodiments, the feature extraction device 100 includes a shaft positioning seat 150, one end of the shaft positioning seat 150 is detachably disposed on the bracket 120, and the other end of the shaft positioning seat 150 is connected to the axial-flow fan blade 200. By adopting the structure, the shaft positioning seat 150 can be arranged to correspond to the axial-flow fan blades 200 with different sizes, and the axial-flow fan blades 200 with different sizes can be suitable by replacing the shaft positioning seat 150.
In this embodiment, the shaft positioning seat 150 includes a bracket connecting seat 151 and an axial-flow fan blade connecting seat 152, the bracket connecting seat 151 is connected to the bracket 120, and the axial-flow fan blade connecting seat 152 is connected to the axial-flow fan blade 200; the bracket 120 is provided with a shaft positioning seat 150 and a connecting groove 121 corresponding to the bracket connecting seat 151. In this structure, the shaft positioning seat 150 is arranged to correspond to the axial flow fan blades 200 of different sizes, specifically, the axial flow fan blade connecting seats 152 in the shaft positioning seat 150 are arranged to correspond to the axial flow fan blades 200 of different sizes, the bracket connecting seats 151 in the shaft positioning seat 150 are arranged to have fixed sizes, at this time, the bracket connecting seats 151 are connected with the bracket 120, the axial flow fan blade connecting seats 152 of different sizes can correspond to the axial flow fan blades 200 of different sizes, and when characteristic parameters of the axial flow fan blades 200 of different sizes are measured and extracted, the detection and extraction of the characteristic parameters of the axial flow fan blades 200 of different sizes can be realized by replacing the axial flow fan blade connecting seats 152 of different sizes;
preferably, the axial flow fan blade connecting seat 152 is located in the middle of the bracket 120, and when the axial flow fan blade connecting seat 152 is located in the middle of the bracket 120, the acting forces of the height meter 133 on the upper surface and the lower surface of the blade 220 in the axial flow fan blade 200 are relatively uniform, and the characteristic parameters of the axial flow fan blade 200 are detected and extracted.
In this embodiment, the holder connecting base 151 includes a holder connecting base body 1511 and a fixture block 1512 disposed on the periphery of the holder connecting base body 1511, and both the holder connecting base body 1511 and the fixture block 1512 are detachably mounted in the shaft positioning base connecting groove 121. This kind of structure, fixture block 1512 on the side of bracket connection seat body 1511 week can prevent to install the dislocation in the installation at bracket connection seat 151 to and can effectual restriction bracket connection seat 151 is rotatory, avoid axial fan blade 200 to install the back, at the rotatory in-process of slide caliper 132, axial fan blade 200 synchronous revolution, and then cause the unsafe condition of parameter of measuring and drawing.
In some embodiments, the center of the base 110 is at a distance L from the bottom of the rack 120, the range of the slide caliper 132 is L0, and the relationship between the distance L and the range L0 is: l > 0.2 × L0. Since the base 110 is used to support and fix other components in the feature extraction device 100, if the distance L is too small, when the vernier 1323 on the vernier caliper 132 is adjusted, the center of gravity of the feature extraction device 100 moves, which may cause the feature extraction device 100 to be inclined, and further cause unsafe factors, and parameter errors may also occur when measuring and extracting the feature parameters of the axial-flow fan blade 200. To sum up, the utility model discloses distance L between the center of base 110 and the bottom of support 120, and slide caliper 132's range L0 are injectd, specifically are L > 0.2L 0, and this kind of structure can guarantee that whole feature extraction device 100's focus is stable, and when measuring the characteristic parameter who draws axial fan blade 200, feature extraction device 100 can not take place the slope.
In some embodiments, the bracket 120 is formed from a high carbon or alloy steel material. This configuration ensures that the holder 120 has sufficient rigidity, further ensuring that the entire feature extraction device 100 does not deform.
The utility model provides a feature extraction device of axial fan blade, it includes any one of the above-mentioned feature extraction device 100 to and axial fan blade 200, axial fan blade 200 includes wheel hub 210 and locates blade 220 on the wheel hub 210, and wheel hub 210 is fixed in on the feature extraction device 100.
In this embodiment, when the feature extraction device 100 includes the shaft positioning seat 150, and the shaft positioning seat 150 includes the axial flow fan blade connection seat 152, the hub 210 is provided with a mounting groove, and the mounting groove corresponds to the axial flow fan blade connection seat 152 in the shaft positioning seat 150. The axial-flow fan blade 200 is fixedly mounted on the axial-flow fan blade connection seat 152 in the shaft positioning seat 150 through the mounting groove on the hub 210, and further fixedly mounted on the feature extraction device 100.
The utility model discloses a step that characteristic extraction element 100 drawed axial fan blade 200 characteristic parameter, also be characteristic extraction element's use step as follows:
a. selecting a shaft positioning seat 150 with a proper size, connecting a support connecting seat 151 of the shaft positioning seat 150 with a support 120, and connecting an axial flow fan blade connecting seat 152 of the shaft positioning seat 150 with an axial flow fan blade 200;
b. selecting the blade height radius r of the axial-flow fan blade 200, namely fixing the vernier 1323 of the vernier caliper 132 at a certain determined position, wherein the vernier calipers 132 at the bottom end and the top end of the bracket 120 can be the same blade height radius r or different blade height radii r, and preferably the same blade height value r is selected; when the same blade height value r is selected, the data of the upper surface and the lower surface of the blade 220 in the axial flow fan blade 200 at the same blade height radius can be extracted simultaneously, and the extracted characteristic parameters are more accurate; secondly, airfoil profile data at the section of the blade height radius r can be extracted, so that subsequent parameter analysis is facilitated; moreover, after the characteristic parameters which can be conveniently extracted are modified, three-dimensional modeling is carried out;
c. under the same blade height radius r, starting from the front edge of the blade 220 and ending to the rear edge (or starting from the rear edge and ending to the front edge), rotating the vernier caliper 132, measuring the height value of the upper surface point and the height value h of the lower surface point of the blade 220 by the altimeter 133 at a certain angle theta, respectively, and recording the coordinates (r, theta, h) of each point, wherein the coordinates of the upper surface point of the blade 220 are (r, theta, h1), and the coordinates of the lower surface point of the blade 220 are (r, theta, h 2); at this time, the vernier calipers 132 at the bottom end and the top end of the bracket 120 can rotate by the same angle θ, or can rotate by different angles θ, preferably by the same angle θ; when the vernier caliper 132 rotates by the same angle theta, the extracted coordinate data are neat and convenient to record, and the coordinate data are more regular after the three-dimensional software is imported;
d. selecting a group of blade height radiuses r to be measured from the blade root to the blade tip (or from the hub 210 to the blade tip if the blade height radiuses r are fixed on the bracket 120 together with the hub 210), repeating the steps b and c, and measuring the coordinates (r, theta, h) of each point under different blade height radiuses r; after the coordinate data are taken, the coordinate data are imported into three-dimensional software and are connected into a curve, and the effect is shown in fig. 11;
e. taking point coordinates (theta, h) under the same blade height radius r, analyzing parameter characteristics including chord length, mounting angle, inflow angle and the like at different blade height radii r, and the effect is shown in figure 12;
f. the performance of the fan blade can be optimized on the basis of the existing fan blade data, the coordinate data is adjusted, and modeling is carried out after three-dimensional software is imported.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.
Claims (16)
1. The utility model provides a characteristic extraction element of axial flow fan blade which characterized in that: it comprises a base (110), a bracket (120), and a measuring component (130);
the support (120) is arranged on the base (110), and the axial flow fan blade (200) is fixed on the support (120);
the measuring component (130) is used for measuring parameters of the axial-flow fan blade (200), the measuring component (130) is arranged at least one end of the support (120), and the measuring component (130) comprises a dial (131), a vernier caliper (132) and a height gauge (133).
2. The feature extraction device according to claim 1, characterized in that: the number of the measuring assemblies (130) is two, and the two measuring assemblies (130) are respectively arranged at two ends of the support (120).
3. The feature extraction device according to claim 1, characterized in that: the dial (131) is connected with the bracket (120); one end of the vernier caliper (132) is connected with the dial (131), the other end of the vernier caliper (132) is a free end, and the vernier caliper (132) rotates by taking the center of the dial (131) as a rotation center.
4. The feature extraction device according to claim 3, characterized in that: the center of the dial (131) is provided with a boss (1311), the boss (1311) is provided with a rotating hole (1312), and the rotating hole (1312) is connected with a rotating shaft (1321) on the vernier caliper (132).
5. The feature extraction device according to claim 1, characterized in that: and a through groove (1324) used for checking scales on the dial (131) is arranged on the vernier caliper (132).
6. The feature extraction device according to claim 1, characterized in that: the feature extraction device comprises a scale pointing structure (140), and the scale pointing structure (140) rotates synchronously with the vernier caliper (132).
7. The feature extraction device according to claim 1, characterized in that: one end of the height meter (133) is connected with the vernier caliper (132); the other end of the height gauge (133) is a free end and can be in contact with the surface of the axial flow fan blade (200).
8. The feature extraction device according to claim 7, characterized in that: the height gauge (133) is connected to a vernier (1323) of the vernier caliper (132).
9. The feature extraction device according to claim 7, characterized in that: the free end of the height gauge (133) is a pointed end.
10. The feature extraction device according to claim 1, characterized in that: the characteristic extraction device comprises a shaft positioning seat (150), one end of the shaft positioning seat (150) is detachably arranged on the support (120), and the other end of the shaft positioning seat (150) is connected with the axial flow fan blade (200).
11. The feature extraction device according to claim 10, characterized in that: the shaft positioning seat (150) comprises a support connecting seat (151) and an axial flow fan blade connecting seat (152), the support connecting seat (151) is connected with the support (120), and the axial flow fan blade connecting seat (152) is connected with the axial flow fan blade (200); the bracket (120) is provided with a shaft positioning seat connecting groove (121) corresponding to the bracket connecting seat (151).
12. The feature extraction device according to claim 11, characterized in that: the bracket connecting seat (151) comprises a bracket connecting seat body (1511) and clamping blocks (1512) arranged on the periphery of the bracket connecting seat body (1511), and the bracket connecting seat body (1511) and the clamping blocks (1512) can be detachably mounted in the shaft positioning seat connecting grooves (121).
13. The feature extraction device according to any one of claims 1 to 12, characterized in that: the distance between the center of the base (110) and the bottom of the bracket (120) is L, the measuring range of the vernier caliper (132) is L0, and the relation between the distance L and the measuring range L0 is as follows: l > 0.2 × L0.
14. The feature extraction device according to any one of claims 1 to 12, characterized in that: the bracket (120) is formed from a high carbon steel or alloy steel material.
15. The utility model provides a characteristic extraction system of axial flow fan blade which characterized in that: the device comprises the feature extraction device (100) as claimed in any one of claims 1 to 14, and an axial flow fan blade (200), wherein the axial flow fan blade (200) comprises a hub (210) and a blade (220) arranged on the hub (210), and the hub (210) is fixed on the feature extraction device (100).
16. The feature extraction system of claim 15, wherein: when the feature extraction device (100) comprises a shaft positioning seat (150), and the shaft positioning seat (150) comprises the axial flow fan blade connecting seat (152), a mounting groove is formed in the hub (210), and corresponds to the axial flow fan blade connecting seat (152) in the shaft positioning seat (150).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921563922.8U CN210862427U (en) | 2019-09-19 | 2019-09-19 | Feature extraction device and feature extraction system of axial flow fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921563922.8U CN210862427U (en) | 2019-09-19 | 2019-09-19 | Feature extraction device and feature extraction system of axial flow fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210862427U true CN210862427U (en) | 2020-06-26 |
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ID=71307137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921563922.8U Active CN210862427U (en) | 2019-09-19 | 2019-09-19 | Feature extraction device and feature extraction system of axial flow fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210862427U (en) |
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2019
- 2019-09-19 CN CN201921563922.8U patent/CN210862427U/en active Active
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