CN116576152A - Wind tunnel fan blade fixing device and wind tunnel fan with adjustable blade mounting angle - Google Patents
Wind tunnel fan blade fixing device and wind tunnel fan with adjustable blade mounting angle Download PDFInfo
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- CN116576152A CN116576152A CN202310849278.5A CN202310849278A CN116576152A CN 116576152 A CN116576152 A CN 116576152A CN 202310849278 A CN202310849278 A CN 202310849278A CN 116576152 A CN116576152 A CN 116576152A
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- 238000009434 installation Methods 0.000 claims abstract description 45
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 238000012360 testing method Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- G01M9/02—Wind tunnels
- G01M9/04—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/34—Blade mountings
- F04D29/36—Blade mountings adjustable
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The application relates to the technical field of wind tunnel tests, in particular to a wind tunnel fan blade fixing device and an adjustable blade mounting angle wind tunnel fan. The wind tunnel fan blade fixing device comprises an installation seat, a connecting sleeve and a blade shaft, wherein the connecting sleeve can be detachably connected with the installation seat when rotating to each installation angle required by the blade. The multi-stage blade mounting device is characterized in that a plurality of first positioning parts and a second positioning part are further arranged, one of the first positioning parts and the second positioning part is arranged on the mounting seat, the other one of the first positioning parts and the second positioning part is arranged on the connecting sleeve, the second positioning part can be respectively matched with each first positioning part in a positioning way, when the second positioning parts are matched with different first positioning parts, the blades correspond to different mounting angles, and multi-stage adjustment of the blade mounting angles is realized. The first positioning part and the second positioning part are both positioned on the peripheral wall surface of the connecting sleeve or the mounting seat, so that an installer can intuitively obtain the matching condition of the second positioning part and the first positioning part, and quickly judge whether the deflection angles of all the paddles are consistent, thereby improving the adjustment efficiency of the mounting angles of the paddles.
Description
Technical Field
The application relates to the technical field of wind tunnel tests, in particular to a wind tunnel fan blade fixing device and an adjustable blade mounting angle wind tunnel fan.
Background
Different from the fixed blade angles of most wind tunnel fans, a part of special wind tunnels are matched with a plurality of movable test sections, so that in order to ensure that the fans of wind tunnel power sections have higher operation efficiency in different states, the installation angles of the fan blades must be synchronously adjusted when different test sections are installed, so that the rotation speed of a fan motor, the power of the motor, the wind speed of the test sections and the like reach the limit value at the same time. Typically, fans are provided with a blade angle adjustment mechanism for adjusting the angle of the fan blades. The variable blade angle fan comprises a fixed wheel disc which is circular and a plurality of blades, wherein the blades are uniformly arranged on the edge of the fixed wheel disc and fixedly connected with the fixed disc, and the fixed disc rotates to drive the blades to rotate. The mechanism for adjusting the installation angle of the fan blade in the prior art has the advantages of complex adjustment process, continuous angle measurement in the adjustment process, low adjustment efficiency and low accuracy.
Disclosure of Invention
The application aims to provide a wind tunnel fan blade fixing device and an adjustable blade mounting angle wind tunnel fan so as to solve the technical problems. The application is as follows:
in a first aspect, the application provides a wind tunnel fan blade fixing device, which comprises a mounting seat, a connecting sleeve and a blade shaft, wherein the connecting sleeve is detachably connected with the mounting seat; the mounting seat is provided with a first blade shaft hole and a connecting part for fixedly connecting with the blade fixing plate; one end of the blade shaft is fixedly connected with the blade, the other end of the blade shaft is rotatably connected with the first blade shaft hole and is in positioning connection with the connecting sleeve, and the connecting sleeve limits the blade shaft to rotate along the circumferential direction of the connecting sleeve relative to the connecting sleeve; the device further comprises a plurality of first positioning parts and a second positioning part, wherein one of the first positioning parts and the second positioning parts is arranged on the peripheral wall of the mounting seat and positioned on the end face of the mounting seat facing the connecting sleeve, and the other positioning part is arranged on the peripheral wall of the connecting sleeve and positioned on the end face of the connecting sleeve facing the mounting seat; the first positioning parts are circumferentially arranged, the circle center is positioned on the axis of the blade shaft, and the arrangement positions of the first positioning parts correspond to the installation positions of the blades; the second positioning part is matched with the first positioning part.
Further, one of the first positioning portion and the second positioning portion is a protrusion, and the other is a groove.
Further, the blade positioning device further comprises a positioning pin, the first positioning part is a first positioning groove, the second positioning part is a second positioning groove, when the blade rotates to a required installation angle, the second positioning groove is aligned with the corresponding first positioning groove to form a positioning pin hole, the positioning pin is positioned in the positioning pin hole, and positioning fit between the first positioning part and the second positioning part is realized through the positioning pin.
Further, the blade further comprises a plurality of groups of first threaded holes and a group of second threaded holes, the first threaded holes and the second threaded holes are circumferentially arranged, the circumferentially arranged radiuses of the first threaded holes and the circumferentially arranged second threaded holes are the same, and the circle centers are both positioned on the axis of the blade shaft; in each group of first threaded holes, the central angles corresponding to two adjacent first threaded holes are the same as the central angles corresponding to two adjacent second threaded holes, and the second threaded holes can be aligned with each group of first threaded holes respectively; the number of the groups of the first threaded holes is identical to that of the first positioning parts, and the central angle between every two adjacent groups of the first threaded holes is identical to that between two adjacent first positioning parts; one of the first threaded hole and the second threaded hole is arranged on the end face of the mounting seat facing the connecting sleeve, and the other one is arranged on the end face of the connecting sleeve facing the mounting seat; the connecting sleeve is detachably connected with the mounting seat through the cooperation of the bolt, the first threaded hole and the second threaded hole.
Further, the blade shaft further comprises a bearing, a bearing installation sinking groove is formed in the installation seat, the bearing is installed in the bearing installation sinking groove, and the other end of the blade shaft further penetrates through the bearing shaft hole and is in rotary connection with the bearing.
The device further comprises a lock nut, wherein a blade shaft threaded through hole is formed in the lock nut, and the other end of the blade shaft is in threaded connection with the blade shaft threaded through hole; when the mounting seat is fixedly connected with the connecting sleeve, a lock nut fixing cavity is formed between the bearing and the connecting sleeve, the lock nut is positioned in the lock nut fixing cavity, and the lock nut fixing cavity limits the lock nut to move along the axial direction of the blade shaft.
Further, the lock nut comprises a jackscrew, a threaded through hole is formed in the circumferential side wall of the lock nut, and the threaded through hole penetrates through the threaded through hole of the blade shaft; the jackscrew is connected with the threaded through hole in a threaded manner, and passes through the threaded through hole to be abutted with the blade shaft, so that the locking nut and the blade shaft are fastened.
Further, a second blade shaft hole is formed in the connecting sleeve, a key groove is formed in the side wall of the second blade shaft hole, and the blade shaft penetrates through the second blade shaft hole and is matched with the key groove in the side wall of the second blade shaft hole through key positioning, so that the blade shaft is in positioning connection with the connecting sleeve.
Further, the mounting seat comprises a fixing flange, a connecting part fixedly connected with the blade fixing plate is arranged on the mounting seat and is a bolt connecting through hole formed in the fixing flange, and the mounting seat is fixedly connected with the blade fixing plate through bolts.
In a second aspect, the application also provides an adjustable blade mounting angle wind tunnel fan, which comprises a blade fixing disc, a plurality of blades and the wind tunnel fan blade fixing device, wherein the wind tunnel fan blade fixing devices are in one-to-one correspondence with the blades, the blades are respectively fixed on the fan blade fixing devices, and the mounting seat of the wind tunnel fan blade fixing device is fixedly connected with the blade fixing disc.
The beneficial effects of the application are as follows:
the wind tunnel blade fixing device provided by the application is used for fixing blades and comprises three parts, namely an installation seat, a connecting sleeve and a blade shaft, wherein the installation seat is fixedly connected with a blade fixing plate to realize that the blade fixing device is fixed on the blade fixing plate, and the blades are fixedly connected with one end of the blade shaft to realize that the blades are fixedly connected on the blade fixing device. The connecting sleeve is provided with a first blade shaft hole, and the blade shaft is rotationally connected with the first blade shaft hole. The connecting sleeve is connected with the blade shaft in a positioning way and is used for limiting the rotation of the blade shaft relative to the connecting sleeve along the axis of the connecting sleeve, so that the blade shaft rotates along with the rotation of the connecting sleeve after the connecting sleeve is arranged. The adapter sleeve rotates to all can be connected with the mount pad can be dismantled under each installation angle that the paddle required, is provided with a plurality of first location portions and a second location portion, and second location portion can be respectively with every first location portion location cooperation, and when the second location portion cooperation was different first location portion, the paddle corresponds different installation angle, has realized the multistage regulation of paddle installation angle. The first positioning part and the second positioning part not only play a role in installation and positioning when the installation seat is connected with the connecting sleeve, so that the installation seat is matched with the connecting sleeve more accurately; meanwhile, the first positioning part and the second positioning part are both positioned on the peripheral wall surface of the connecting sleeve or the mounting seat, so that an installer can intuitively obtain the matching condition of the second positioning part and the first positioning part, and quickly judge whether the mounting angles of all the paddles are consistent, thereby improving the paddle mounting angle adjusting efficiency.
Drawings
FIG. 1 is a schematic view of a fan blade retention device of the present application;
FIG. 2 is a schematic view of a fan blade mounting apparatus of the present application mounted to a blade mounting plate in a rear half cut-away;
FIG. 3 is a schematic view of an adjustable blade mounting angle wind tunnel fan.
In the figure: 100. a mounting base; 110. a connection part; 120. a first positioning portion; 130. a first threaded hole; 140. a bearing is provided with a sinking groove; 150. a fixing flange; 200. connecting sleeves; 210. a key slot; 220. a second positioning portion; 230. a second threaded hole; 240. a second blade shaft hole; 300. a blade shaft; 400. blade fixing plate; 500. a positioning pin; 600. a bearing; 700. a lock nut; 710. a blade shaft threaded through hole; 720. a threaded through hole; 730. a jackscrew; 800. a paddle; 900. an elastic gasket.
Detailed Description
The following description of the specific embodiments of the present application will be given with reference to the accompanying drawings, so as to further understand the concept of the present application, the technical problems to be solved, the technical features constituting the technical solutions, and the technical effects to be brought about. However, the description of these embodiments is illustrative, and does not constitute a specific limitation on the present application.
In order to facilitate understanding of the present application, the inventive concept of the present application is described below:
as shown in fig. 3, the wind tunnel fan includes a plurality of fan blades 800, the fan blades 800 are fixed on the blade fixing plate 400, and when different movement test sections are installed, the installation angle of the fan blades 800 needs to be adjusted so that the installation angles of the fan blades 800 are consistent.
In the related art, the fan blades 800 and the blade fixing plate 400 are connected by a plurality of groups of crank links and other mechanisms, and the motor is controlled to rotate to drive all the blades 800 to rotate to the same installation angle, but the structure is too complex, occupies a larger position on the blade fixing plate 400, is difficult to be laid out, and when one group of crank links is damaged and fails, other groups of crank links cannot be started, and the adjustment of each fan blade 800 is easily interfered by other fan blades 800.
In the related art, as in the application patent with the patent publication number of CN110702355A, the fan blades are locked on the hub through the action of the locking ring matched with the bolts, the scheme is difficult to ensure that the installation angle of each blade is consistent, the installation angle of each blade needs to be measured by adopting an angle measuring instrument and other instruments, the adjustment process is complex, and the efficiency is low.
To this end, the present application proposes a fan blade fixing device, which includes a structure of a mounting base 100, a connecting sleeve 200, a blade shaft 300, a first positioning portion 120, a second positioning portion 220, and the like. The paddle shaft 300 is in limit connection with the connecting sleeve 200 and is in rotary connection with the mounting seat 100; the mounting base 100 is fixedly connected with the blade fixing plate 400 and detachably connected with the connecting sleeve 200. The connecting sleeve 200 drives the blade shaft 300 to rotate, and the connecting sleeve 200 can be detachably connected with the mounting seat 100 under each mounting angle required by the blade 800, and the second positioning part 220 is in positioning fit with the corresponding first positioning part 120 under each mounting angle. The first positioning part 120 and the second positioning part 220 are positioned on the peripheral wall of the mounting seat 100 or the connecting sleeve 200, the blade 800 can be adjusted to be mounted at a specified angle by adjusting the positioning fit of the second positioning part 220 and the specified first positioning part 120, and meanwhile, the mounting angle of each blade 800 can be intuitively judged by an installer through the matching condition of the first positioning part 120 and the second positioning part 220, so that the accuracy of angle adjustment of the blade 800 is improved, and the adjustment efficiency is improved.
The method comprises the following steps:
as shown in fig. 1 and 2, the wind tunnel fan blade fixing device is used for fixing a blade 800, and comprises a mounting base 100, a connecting sleeve 200 and a blade shaft 300, wherein the connecting sleeve 200 is detachably connected with the blade shaft 300. The mount 100 is provided with a first blade shaft hole and a connection portion 110 for fixedly connecting with the blade fixing plate 400. One end of the blade shaft 300 is fixedly connected with the blade 800, and the other end is rotatably connected with the first blade shaft hole and is in positioning connection with the connecting sleeve 200, and the connecting sleeve 200 limits the blade shaft 300 to rotate along the circumferential direction relative to the connecting sleeve 200. The device further comprises a plurality of first positioning portions 120 and a second positioning portion 220, wherein one of the first positioning portions 120 and the second positioning portions 220 is arranged on the peripheral wall of the mounting seat 100 and located on the end face of the mounting seat 100 facing the connecting sleeve 200, and the other one is arranged on the peripheral wall of the connecting sleeve 200 and located on the end face of the connecting sleeve 200 facing the mounting seat 100. The first positioning parts 120 are circumferentially arranged, the circle center is positioned on the axis of the blade shaft 300, and the arrangement positions of the first positioning parts 120 correspond to the installation positions of the blades 800; the second positioning portion 220 is adapted to the first positioning portion 120.
In the application, the connecting sleeve 200 is connected with the blade shaft 300 in a positioning way, the blade shaft 300 is limited to rotate along the circumferential direction of the connecting sleeve 200 relative to the connecting sleeve 200 by the connecting sleeve 200, and the rotating of the connecting sleeve 200 drives the blade shaft 300 to synchronously rotate, so that the blade 800 fixed on the blade shaft 300 rotates, and the installation angle of the blade 800 is adjusted.
In the application, a plurality of first positioning parts 120 are arranged, one second positioning part 220 is arranged, the first positioning parts 120 are circumferentially arranged, the circle center is positioned on the axis of the blade shaft 300, and the first positioning parts 120 are matched with the second positioning parts 220. When the connecting sleeve 200 is rotated, the second positioning portions 220 can be respectively matched with the first positioning portions 120 in a positioning manner. The setting of first location portion 120 and second location portion 220 on the one hand helps the mount pad 100 to fix a position when being connected with adapter sleeve 200, and on the other hand when second location portion 220 cooperatees with different first location portion 120, the installation angle of paddle 800 is different, has realized the multistage regulation of paddle 800, and the installer can observe whether the cooperation condition of second location portion 220 and first location portion 120 is unanimous on each wind-tunnel fan paddle fixing device, judges whether the installation angle of each paddle 800 is unanimous, very big improvement adjustment efficiency, guaranteed the regulation accuracy. The first positioning portion 120 and the second positioning portion 220 being adapted means that the shapes and the sizes of the first positioning portion 120 and the second positioning portion 220 are adapted, and at the same time, the setting positions of the first positioning portion 120 and the second positioning portion 220 are also adapted.
The central angle between the first positioning portions 120, the setting position of the initial first positioning portion 120, etc. affect the initial angle, the adjustment range, etc. of the blade 800, so the arrangement position of the first positioning portion 120 should correspond to each required installation angle of the blade 800, so that when the blade 800 is adjusted to the required installation angle, the first positioning portion 120 can just be in limit fit with the second positioning portion 220.
In one embodiment of the present application, one of the first positioning portion 120 and the second positioning portion 220 is a protrusion, the other is a groove, and shapes and sizes of the protrusion and the groove are adapted to realize mutual cooperation limiting, so as to realize positioning of the connecting sleeve 200 and the blade shaft 300, for example, the protrusion may have a cuboid shape, the groove is a cuboid groove, the protrusion is a triangular prism shape groove, and the like. In another embodiment of the present application, as shown in fig. 1, the wind tunnel fan blade fixing device further includes a positioning pin 500, where the first positioning portion 120 is a first positioning groove, and the second positioning portion 220 is a second positioning groove, and when the blade 800 rotates to each installation angle required by the blade 800, the second positioning groove aligns with the corresponding first positioning groove and forms a positioning pin hole, the shape and size of the positioning pin 500 are matched with the positioning pin hole, the positioning pin 500 is located in the positioning pin hole, and positioning matching of the first positioning portion 120 and the second positioning portion 220 is achieved under the action of the positioning pin 500. The cross-sectional shape of the positioning pin 500 is various, such as rectangular, circular, pentagonal, etc., and is not limited in the present application.
According to the application, the installation angle of the blade 800 is adjusted by rotating the connecting sleeve 200 and adjusting the relative position of the connecting sleeve 200 and the installation seat 100. Thus, connection sleeve 200 is removably attachable to mount 100 at each mounting angle required for blade 800. The connection sleeve 200 is detachably connected to the mounting base 100 in various manners, such as a bolt connection, a snap connection, etc., which are not limited in the present application. In one embodiment of the present application, as shown in fig. 1, by providing a plurality of groups of first threaded holes 130 and a plurality of groups of second threaded holes 230, the connecting sleeve 200 can be detachably connected with the mounting base 100 when rotating to different angles under the cooperation of bolts, which is specifically as follows:
the wind tunnel fan blade fixing device further comprises a plurality of groups of first threaded holes 130 and a group of second threaded holes 230, the first threaded holes 130 and the second threaded holes 230 are circumferentially arranged, the circumferentially arranged radiuses of the first threaded holes 130 and the circumferentially arranged second threaded holes are the same, and the circle centers are both located on the axis of the blade shaft 300. In each set of first threaded holes 130, the central angles corresponding to two adjacent first threaded holes 130 are the same as the central angles corresponding to two adjacent second threaded holes 230, so that the second threaded holes 230 can be aligned with each set of first threaded holes 130 respectively. The number of the first screw holes 130 is identical to the number of the first positioning portions 120, and the central angle between each adjacent first screw hole 130 is identical to the central angle between each adjacent first positioning portion 120, so that the second screw holes 230 can be aligned with the corresponding first screw holes 130 while the second positioning portions 220 are positioned and matched with the different first positioning portions 120, and then the connection between the mounting base 100 and the connection sleeve 200 is achieved by passing bolts through the first screw holes 130 and the second screw holes 230. One of the first screw hole 130 and the second screw hole 230 is provided on an end surface of the mount 100 facing the connection sleeve 200, and the other is provided on an end surface of the connection sleeve 200 facing the mount 100. In the embodiment of the present application, two sets of the first screw holes 130 and two first positioning portions 120 are provided.
When the installation angle of the blade 800 is adjusted, the blade shaft 300 rotates in the first blade shaft hole, and preferably, the wind tunnel blade fixing device further comprises a bearing 600, the bearing installation sink 140 is arranged on the installation seat 100, the bearing 600 is installed in the bearing installation sink 140, and the other end of the blade 800 further passes through the bearing 600 shaft hole and is rotatably connected with the bearing 600. The arrangement of the bearing 600 can reduce friction between the blade shaft 300 and the mounting base 100, and more facilitate the adjustment of the mounting angle of the blade 800 by a user.
The blade shaft 300 needs to be positioned and connected with the connecting sleeve 200 in the circumferential direction, and also needs to be fixed in the axial direction to prevent the blade shaft 300 from moving axially and being separated from the mounting seat 100 and the connecting sleeve 200. The axial fixing form of the blade shaft 300 is not limited in the present application, and for example, a fixing structure may be provided on the blade fixing plate 400. In the present application, in order to optimize the structural layout and make the structure more compact, it is preferable that the wind tunnel fan blade fixing device further comprises a lock nut 700, a blade shaft threaded through hole 710 is provided on the lock nut 700, and the other end of the blade shaft 300 is further in threaded connection with the blade shaft threaded through hole 710, so as to fix the lock nut 700 on the blade shaft 300. When the mount 100 is fixedly connected with the connection sleeve 200, a lock nut fixing cavity is formed between the bearing 600 and the connection sleeve 200, the lock nut 700 is positioned in the lock nut fixing cavity, and the lock nut fixing cavity limits the axial movement of the nut along the blade shaft 300, thereby limiting the axial movement of the blade shaft 300.
Preferably, an elastic gasket 900 is further arranged between the lock nut 700 and the bearing 600, the arrangement of the elastic gasket 900 is helpful to reduce the requirement of the machining precision of the lock nut fixing cavity, and when the machining precision of the lock nut 700 fixing cavity is not high, the lock nut 700 is fixed in the lock nut fixing cavity through the elastic gasket 900.
Further, the lock nut 700 includes a top screw 730, a threaded through hole 720 is provided at an axial side wall of the lock nut 700, the threaded through hole 720 penetrates through the blade shaft threaded through hole 710, the top screw 730 is in threaded connection with the threaded through hole 720, and the top screw 730 abuts against the blade shaft 300 through the threaded through hole 720, so that the lock nut 700 and the blade shaft 300 are fastened.
The connection sleeve 200 is in limit connection with the blade shaft 300, so that the blade shaft 300 is limited to rotate along the circumferential direction relative to the connection sleeve 200, and the limit connection relation between the connection sleeve 200 and the blade shaft 300 can be welding, threaded connection, clamping connection and the like, so that the application is not limited. In the embodiment of the present application, as shown in fig. 1, a second blade shaft hole 240 is provided on the connecting sleeve 200, a key slot 210 is provided on the side wall of the second blade shaft hole 240, and the blade shaft 300 passes through the second blade shaft hole 240 and cooperates with the key slot 210 on the side wall of the second blade shaft 300 through key positioning, so as to realize positioning connection between the blade shaft 300 and the connecting sleeve 200.
In the embodiment of the present application, the mounting base 100 includes a fixing flange 150, the mounting base 100 is provided with a connecting portion 110 fixedly connected to the blade fixing plate 400 as a bolt connecting through hole provided on the fixing flange 150, and the mounting base 100 is fixedly connected to the blade fixing plate 400 through a bolt.
The application also provides a wind tunnel fan with adjustable blade mounting angles, which comprises a blade fixing plate 400, a plurality of blades 800 and the fan blade fixing devices for fixing the blades 800, wherein the fan blade fixing devices are in one-to-one correspondence with the blades 800, the blades 800 are respectively arranged on the fan blade fixing devices, and the mounting seat 100 of the fan blade fixing devices is fixedly connected with the blade fixing plate 400. The structural form of the blade fixing plate 400 is not limited in the present application, and a user may perform an adaptive design according to different sizes of fans, circuit designs, internal structures, installation positions, etc. Because the fan blade fixing device provided by the application is adopted by the fan blade angle adjustable fan, when the fan blade angle adjustable fan is used, a user can quickly adjust each blade on the fan to the same installation angle, and the adjustment efficiency is improved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; while the application has been described in detail with reference to the foregoing embodiments, it will be appreciated by those skilled in the art that variations may be made in the techniques described in the foregoing embodiments, or equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A wind tunnel fan blade fixing device, characterized in that:
the device comprises a mounting seat (100), a connecting sleeve (200) and a blade shaft (300), wherein the connecting sleeve (200) is detachably connected with the mounting seat (100);
a first blade shaft hole and a connecting part (110) for fixedly connecting with a blade fixing plate (400) are arranged on the mounting seat (100);
one end of the blade shaft (300) is fixedly connected with the blade (800), the other end of the blade shaft is rotatably connected with the first blade shaft hole and is in positioning connection with the connecting sleeve (200), and the connecting sleeve (200) limits the blade shaft (300) to rotate along the circumferential direction of the connecting sleeve (200) relative to the connecting sleeve;
the device further comprises a plurality of first positioning parts (120) and a second positioning part (220), wherein one of the first positioning parts (120) and the second positioning parts (220) is arranged on the peripheral wall of the mounting seat (100) and positioned on the end face of the mounting seat (100) facing the connecting sleeve (200), and the other positioning part is arranged on the peripheral wall of the connecting sleeve (200) and positioned on the end face of the connecting sleeve (200) facing the mounting seat (100);
the first positioning parts (120) are circumferentially arranged, the circle center is positioned on the axis of the blade shaft (300), and the arrangement positions of the first positioning parts (120) correspond to the installation positions of the blades (800); the second positioning part (220) is matched with the first positioning part (120).
2. A wind tunnel fan blade fixing device according to claim 1, wherein: one of the first positioning portion (120) and the second positioning portion (220) is a protrusion, and the other is a groove.
3. The wind tunnel fan blade fixing device according to claim 1, wherein: still include locating pin (500), first location portion (120) is first constant head tank, and second constant head tank (220) are the second constant head tank, and second constant head tank aligns with corresponding first constant head tank when paddle (800) rotate to required installation angle, forms the location pinhole, and locating pin (500) are located the location pinhole, realize first location portion (120) and second location portion (220) location cooperation through locating pin (500).
4. A wind tunnel fan blade fixing device according to claim 3, wherein: the blade further comprises a plurality of groups of first threaded holes (130) and a group of second threaded holes (230), the first threaded holes (130) and the second threaded holes (230) are circumferentially arranged, the circumferentially arranged radiuses of the first threaded holes and the circumferentially arranged second threaded holes are the same, and the circle centers of the first threaded holes and the second threaded holes are both positioned on the axis of the blade shaft (300);
in each group of first threaded holes (130), the central angles corresponding to two adjacent first threaded holes (130) are the same as the central angles corresponding to two adjacent second threaded holes (230), and the second threaded holes (230) can be aligned with each group of first threaded holes (130) respectively;
the number of the groups of the first threaded holes (130) is identical to that of the first positioning parts (120), and the central angle between every two adjacent groups of the first threaded holes (130) is identical to that of the two adjacent first positioning parts (120);
one of the first threaded hole (130) and the second threaded hole (230) is arranged on the end surface of the mounting seat (100) facing the connecting sleeve (200), and the other is arranged on the end surface of the connecting sleeve (200) facing the mounting seat (100);
the connecting sleeve (200) is detachably connected with the mounting seat (100) through the cooperation of the bolts, the first threaded holes (130) and the second threaded holes (230).
5. A wind tunnel fan blade fixing device according to any one of claims 1 to 4, wherein: the blade shaft (300) further comprises a bearing (600), wherein a bearing installation sink (140) is arranged on the installation seat (100), the bearing (600) is installed in the bearing installation sink (140), and the other end of the blade shaft (300) further penetrates through a shaft hole of the bearing (600) and is rotationally connected with the bearing (600).
6. A wind tunnel fan blade fixing device according to claim 5, wherein: the novel blade shaft structure further comprises a lock nut (700), a blade shaft threaded through hole (710) is formed in the lock nut (700), and the other end of the blade shaft (300) is in threaded connection with the blade shaft threaded through hole (710); when the mounting seat (100) is fixedly connected with the connecting sleeve (200), a lock nut fixing cavity is formed between the bearing (600) and the connecting sleeve (200), the lock nut (700) is positioned in the lock nut fixing cavity, and the lock nut fixing cavity limits the lock nut to axially move along the blade shaft (300).
7. A wind tunnel fan blade fixing device according to claim 6, wherein: the lock nut (700) comprises a jackscrew (730), a threaded through hole (720) is formed in the circumferential side wall of the lock nut (700), and the threaded through hole (720) penetrates through the blade shaft threaded through hole (710); the jackscrew (730) is in threaded connection with the threaded through hole (720), the jackscrew (730) passes through the threaded through hole (720) to be abutted with the blade shaft (300), and the lock nut (700) and the blade shaft (300) are fastened.
8. A wind tunnel fan blade fixing device according to claim 7, wherein: be provided with second paddle shaft hole (240) on adapter sleeve (200), keyway (210) have been seted up to second paddle shaft hole (240) lateral wall, and paddle shaft (300) pass second paddle shaft hole (240) and pass through key location cooperation with second paddle shaft hole (240) lateral wall keyway (210), realize paddle shaft (300) and adapter sleeve (200) location connection.
9. A wind tunnel fan blade fixing device according to any one of claims 1 to 4, wherein: the mounting seat (100) comprises a fixing flange (150), a connecting part (110) fixedly connected with the blade fixing disc (400) is arranged on the mounting seat (100) and is a bolt connecting through hole arranged on the fixing flange (150), and the mounting seat (100) is fixedly connected with the blade fixing disc (400) through bolts.
10. An adjustable paddle installation angle wind tunnel fan which is characterized in that: the wind tunnel fan blade fixing device comprises a blade fixing disc (400), a plurality of blades (800) and the wind tunnel fan blade fixing device according to any one of claims 1 to 9, wherein the wind tunnel fan blade fixing devices are in one-to-one correspondence with the blades (800), the blades (800) are respectively fixed on the fan blade fixing devices, and an installation seat (100) of the wind tunnel fan blade fixing device is fixedly connected with the blade fixing disc (400).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310849278.5A CN116576152B (en) | 2023-07-12 | 2023-07-12 | Wind tunnel fan blade fixing device and wind tunnel fan with adjustable blade mounting angle |
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|---|---|---|---|
| CN202310849278.5A CN116576152B (en) | 2023-07-12 | 2023-07-12 | Wind tunnel fan blade fixing device and wind tunnel fan with adjustable blade mounting angle |
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| CN116576152B CN116576152B (en) | 2023-09-22 |
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