CN117072470A - Fresh air system centrifugal fan blade with positioning structure and balance correction device - Google Patents
Fresh air system centrifugal fan blade with positioning structure and balance correction device Download PDFInfo
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- CN117072470A CN117072470A CN202311154119.XA CN202311154119A CN117072470A CN 117072470 A CN117072470 A CN 117072470A CN 202311154119 A CN202311154119 A CN 202311154119A CN 117072470 A CN117072470 A CN 117072470A
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- fan blade
- positioning
- rod
- centrifugal fan
- motor
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- 238000005096 rolling process Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 33
- 241000883990 Flabellum Species 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000003028 elevating effect Effects 0.000 description 3
- 210000001503 joint Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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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
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
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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
- F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts
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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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/624—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/626—Mounting or removal of fans
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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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/662—Balancing of rotors
Landscapes
- Engineering & Computer Science (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 air conditioner fresh air systems, in particular to a centrifugal fan blade of a fresh air system with a positioning structure and a balance correction device. A centrifugal fan blade comprises a fan blade body and a motor shell arranged on the fan blade body, wherein a motor shaft is integrally formed in the motor shell; the motor shell is internally provided with positioning bosses on the motor shaft coaxially, and the positioning bosses are provided with positioning grooves which are uniformly distributed at intervals around the motor shaft. In the balance correction process, through setting up the location lug at the top of balance machine middle shaft sleeve, after installing the fan blade in balance machine, the location lug is engaged with the constant head tank to inserting, carries out radial spacing through location lug and constant head tank between the axle sleeve in fan blade and the balance machine to replace original start chuck mode to carry out radial spacing processing between fan blade and the axle sleeve, need not the axle sleeve and press from both sides the tight motor shaft, can prevent that the motor shaft from being pressed from both sides the flower risk, make it be difficult for leading to the motor noise to appear in the operation in-process.
Description
Technical Field
The application relates to the technical field of air conditioner fresh air systems, in particular to a centrifugal fan blade of a fresh air system with a positioning structure and a balance correction device.
Background
In an air conditioner fresh air system, in order to enable a fan blade to stably run and reduce vibration noise of the fan blade, dynamic balance correction is generally required for the fan blade. Because the fan blade body of the outer rotor motor is connected with the motor shell with the motor shaft, in the correction process, the fan blade body needs to be arranged on the balancing machine, so that the motor shaft is inserted on the shaft sleeve in the balancing machine.
Because the motor shaft is usually an optical axis, in the actual correction process, when the fan blade is clamped on the balancing machine to realize radial rotation stopping, a pneumatic chuck is required to be manufactured on the balancing machine and is realized through the friction force of the motor shaft and the chuck.
However, during the clamping of the motor shaft by the clamping head pre-tightening force, the motor shaft is usually clamped, so that motor noise occurs during operation. Thus, further improvements can be made.
Disclosure of Invention
In order to prevent the motor shaft from being clamped, so that motor noise is not easy to occur in the operation process, the application provides a centrifugal fan blade of a fresh air system with a positioning structure and a balance correction device.
In a first aspect, the present application provides a centrifugal fan blade, which adopts the following technical scheme:
a centrifugal fan blade comprises a fan blade body and a motor shell arranged on the fan blade body, wherein a motor shaft is integrally formed in the motor shell; a positioning boss is arranged in the motor shell, sleeved on a motor shaft and coaxially arranged with the motor shaft; the positioning boss is provided with positioning grooves which are uniformly distributed at intervals around the motor shaft.
Through adopting above-mentioned technical scheme, in carrying out balance correction process, through setting up the location lug at the top of balance machine middle shaft sleeve, after installing the fan blade in the balance machine, the location lug is engaged with the constant head tank, carry out radial spacing through location lug and constant head tank between the axle sleeve in fan blade and the balance machine, in order to replace original start chuck mode to carry out radial spacing processing between fan blade and the axle sleeve, need not the axle sleeve and press from both sides the motor shaft, can prevent that the motor shaft from being pressed from both sides the flower risk, make it be difficult for leading to the motor noise to appear in the operation process.
Optionally, through holes are formed in the motor shell, and the through holes are uniformly distributed around the motor shaft; the back side of the positioning boss is provided with a connecting column, and the connecting column penetrates through the through hole and then is connected with the fan blade body.
Through adopting above-mentioned technical scheme, through the mode of spliced pole, connect into a whole with location boss, motor casing and flabellum body to form triangle connected relation, it is more stable to carry out balanced correction in-process structure in the follow-up.
Optionally, one end of the motor shaft connected with the motor casing is provided with a positioning base, the positioning base is in a round table shape, and the positioning boss is sleeved and clamped on the positioning base.
Through adopting above-mentioned technical scheme, through setting up the location base to supply the location boss to install, because the outline of location base is great, it can bear torsion great, so as to protect the motor shaft, make it be difficult for taking place to warp.
Optionally, the number of the through holes is three, and the through holes are uniformly distributed around the motor shaft; the number of the connecting columns is three, and the connecting columns are uniformly distributed at intervals around the center of the positioning boss.
In a second aspect, the present application provides a centrifugal fan blade balance correction device, which adopts the following technical scheme:
a centrifugal fan blade balance correction device is used for carrying out balance correction treatment on the centrifugal fan blade and comprises a balancing machine, wherein a shaft sleeve in the balancing machine is provided with positioning convex blocks which are uniformly arranged at intervals around the axis of the shaft sleeve and used for being in butt-joint engagement with positioning grooves.
Through adopting above-mentioned technical scheme, in carrying out balance correction in-process, install the fan blade behind the balancing machine, positioning lug carries out to inserting the meshing with the constant head tank, carries out radial spacing through positioning lug and constant head tank between the axle sleeve in fan blade and the balancing machine to replace original start chuck mode to carry out radial spacing processing between fan blade and the axle sleeve, need not the axle sleeve and press from both sides tight motor shaft, can prevent that the motor shaft from being pressed from both sides the flower risk, make it be difficult for leading to appearing motor noise in the operation in-process.
Optionally, a stand is further installed on the balancing machine, a positioning rod is installed on the stand, the positioning rod is vertically arranged and aligned with a shaft sleeve on the balancing machine, and the positioning rod can be vertically moved and controlled; the bottom of the positioning rod can be embedded with balls in a rolling way.
Through adopting above-mentioned technical scheme, in carrying out balance correction in-process, after installing the axle sleeve in the balancing machine with the flabellum body, control locating lever descends, makes the bottom of locating lever push down in the top of motor shaft through the ball to form roll formula butt, with carry out axial spacing to the flabellum body, make it be difficult for appearing axial runout and influence correction effect in the correction in-process.
Optionally, the number of the vertical frames is two, and the vertical frames are distributed on the left side and the right side of the shaft sleeve; and a lifting table is arranged between the two groups of vertical frames, and an air cylinder is arranged on the lifting table and used for controlling the positioning rod to move upwards or downwards.
Through adopting above-mentioned technical scheme, in carrying out balance correction in-process, after installing the axle sleeve in the balancing machine with the flabellum body, the elevating platform drives the locating lever and descends, makes the bottom of locating lever push down in the top of motor shaft through the ball to form roll formula butt, with carry out axial spacing to the flabellum body, make it be difficult for appearing axial runout and influence correction effect in correction in-process. Meanwhile, the number of the vertical frames is set to be two groups which are arranged left and right, so that the stability of the lifting table can be guaranteed, and the stability of axial limiting work of the fan blade body by the subsequent positioning rod is guaranteed.
Optionally, the grudging post includes lower pier, goes up the pier and installs two pole settings between lower pier and last pier, install down and move the slip table between pier and the last pier erectly, it moves slip table lift adjustment formula slidable mounting in the pole setting to erect, the both ends of elevating platform are installed respectively and are moved the slip table in the erectting of two sets of grudging posts.
Through adopting above-mentioned technical scheme, utilize the pole setting in the grudging post itself to regard as the slide rail that erects and move the slip table, can simplify the foundation structure of grudging post.
Optionally, a driving motor and a ball screw pair are installed on any one of the uprights, the ball screw pair is vertically arranged, the upper end and the lower end of a screw in the ball screw pair are respectively and rotatably installed on the lower abutment and the upper abutment through supporting seats, and nuts in the ball screw pair are fixedly connected to a vertically moving sliding table on one side where the nuts are located; the driving motor is used for driving the screw rod in the ball screw pair to rotate.
Through adopting above-mentioned technical scheme, in the in-service use, the lead screw in the driving motor control ball screw pair rotates to control the elevating platform and go up or descend, in order to adjust the initial position of cylinder, locating lever, in order to adjust it to suitable high position.
Optionally, the positioning rod comprises an upper node rod and a lower node rod, and the ball is arranged at the bottom end of the lower node rod in a rolling manner; a retraction sliding groove is formed in the upper section rod, and penetrates through the bottom of the upper section rod along the extension direction of the upper section rod; the top of the lower section rod is inserted into a retraction chute in the lower section rod in a sliding way, and the lower section rod and the upper section rod cannot be separated; and a return spring is further arranged in the retraction chute, the top of the return spring is supported at the bottom of the retraction chute, and the bottom of the return spring is propped against the lower section rod.
Through adopting above-mentioned technical scheme, the cylinder control locating lever descends and pushes down the in-process that supports tightly in the flabellum body, because lower section pole can take place relative flexible for last section pole, makes the locating lever be difficult for pressing the flabellum body because of pushing down the stroke too big. Meanwhile, under the action of the pretightening force of the return spring, the return spring can ensure that a larger pretightening pressure is applied to the fan blade body through the lower joint rod, and can ensure that limit control is carried out on the circumference of the fan blade body.
In summary, the present application includes at least one of the following beneficial technical effects:
1. in the balance correction process, the positioning protruding block is arranged at the top of the shaft sleeve in the balance machine, after the fan blade is mounted on the balance machine, the positioning protruding block is in opposite-inserting engagement with the positioning groove, the shaft sleeve in the balance machine and the fan blade are radially limited through the positioning protruding block and the positioning groove, so that the original starting chuck mode is replaced to carry out radial limiting treatment on the position between the fan blade and the shaft sleeve, the shaft sleeve is not required to clamp a motor shaft, the risk that the motor shaft is clamped is prevented, and motor noise is not easy to occur in the operation process;
2. in the balance correction process, after the fan blade is mounted on the balancing machine, the positioning protruding block is in opposite-inserting engagement with the positioning groove, and radial limiting is carried out between the fan blade and the shaft sleeve in the balancing machine through the positioning protruding block and the positioning groove so as to replace the original starting chuck mode to carry out radial limiting treatment on the position between the fan blade and the shaft sleeve, and the shaft sleeve is not required to clamp the motor shaft, so that the risk of clamping the motor shaft is prevented, and motor noise is not easy to occur in the operation process;
3. in the balancing correction process, after the fan blade body is installed on the shaft sleeve in the balancing machine, the positioning rod is controlled to move downwards, so that the bottom of the positioning rod is pressed down on the top of the motor shaft through the balls to form rolling type butt joint, so that the fan blade body is axially limited, and axial runout is not easy to occur in the correction process, and the correction effect is affected.
Drawings
Fig. 1 is a schematic diagram of a fan blade structure of a centrifugal fan blade according to the present application.
Fig. 2 is a schematic diagram of a motor casing structure of a centrifugal fan blade according to the present application.
Fig. 3 is a schematic structural diagram of an embodiment 1 of a centrifugal fan blade balance correction device according to the present application after a fan blade main body is mounted on a balancing machine.
Fig. 4 is a schematic structural diagram of an embodiment 1 of a balance correction device for centrifugal fan blades according to the present application after the main blades of the fan blades explode in a balancing machine.
Fig. 5 is a schematic structural diagram of an embodiment 2 of a centrifugal fan blade balance correction device according to the present application.
Fig. 6 is a cross-sectional view of a positioning rod in an embodiment 2 of a centrifugal fan blade balance correction device according to the present application.
Reference numerals illustrate:
1. a fan blade body; 2. a motor housing; 21. a motor shaft; 22. positioning the boss; 23. a positioning groove; 24. positioning a base station; 25. a through hole; 3. a balancing machine; 31. a shaft sleeve; 32. positioning the protruding blocks; 4. a vertical frame; 41. a lower abutment; 42. a pier is arranged on the upper part; 43. a vertical rod; 44. vertically moving the sliding table; 45. a driving motor; 46. a speed reducer; 47. a ball screw pair; 48. a bracket; 5. a lifting table; 6. a cylinder; 7. a positioning rod; 71. an upper section bar; 72. a lower section bar; 73. retracting the sliding groove; 74. a return spring; 8. and (3) rolling balls.
Detailed Description
The application is described in further detail below with reference to fig. 1-6.
The embodiment of the application discloses a centrifugal fan blade.
Referring to fig. 1, a centrifugal fan blade includes a fan blade body 1 and a motor casing 2 integrally formed with a motor shaft 21, and the motor casing 2 is mounted in the fan blade body 1. Wherein, the motor casing 2 is internally provided with a circular ring plate-shaped positioning boss 22, and the positioning boss 22 is sleeved on the motor shaft 21 and is coaxially arranged with the motor shaft 21. The positioning boss 22 is provided with two positioning grooves 23, and in this embodiment, the positioning grooves 23 are symmetrically arranged on two sides of the motor shaft 21 to be uniformly spaced.
Referring to fig. 2, specifically, in this embodiment, a positioning base 24 in a shape of a truncated cone is integrally formed at one end of the motor shaft 21 connected with the motor casing 2, and a positioning hole adapted to the positioning base 24 is formed in the middle of the positioning boss 22, so that the positioning boss 22 can be mounted on the positioning base 24 through positioning Kong Duicha. The motor casing 2 is provided with three through holes 25, and the through holes 25 are uniformly distributed around the motor shaft 21. Correspondingly, the back side of the positioning boss 22 is provided with three connecting columns, the connecting columns are uniformly distributed at intervals around the center of the positioning boss 22, the outer diameters of the connecting columns are matched with the through holes 25, and the three connecting columns respectively penetrate through the three through holes 25 and then are connected with the fan blade body 1, so that the positioning boss 22, the motor casing 2 and the fan blade body 1 can form a whole.
On the one hand, the positioning base 24 is provided for the positioning boss 22 to be installed, and the positioning base 24 can bear larger torsion due to larger outer contour so as to protect the motor shaft 21 and prevent the motor shaft from being deformed easily. On the other hand, through the mode of spliced pole, connect location boss 22, motor casing 2 and flabellum body 1 into an entirety to form triangle connected relation, the structure is more stable in the subsequent balance correction process that carries out.
The application relates to a centrifugal fan blade, which is implemented by the following principle:
in the process of carrying out balance correction, through setting up two positioning convex blocks at the top symmetry of balance machine middle shaft sleeve, after installing the fan blade in balance machine, positioning convex block carries out the butt joint meshing with positioning groove 23, carry out radial spacing through positioning convex block and positioning groove 23 between the axle sleeve in fan blade and the balance machine, carry out radial spacing processing between fan blade and the axle sleeve in place of original start chuck mode, need not the axle sleeve and press from both sides tight motor shaft 21, can prevent that motor shaft 21 from being pressed from both sides the flower risk, make it be difficult for leading to the motor noise to appear in the operation process.
The embodiment of the application also discloses a centrifugal fan blade balance correction device.
Example 1:
referring to fig. 3-4, a centrifugal fan blade balance correction device is used for performing balance correction on the centrifugal fan blade, and includes a balancing machine 3, a shaft sleeve 31 in the balancing machine 3 is integrally formed with positioning bosses 22, in this embodiment, the number of positioning bosses 32 is two, and the positioning bosses are symmetrically arranged on two sides of an axis of the shaft sleeve 31 to be uniformly spaced.
In the process of carrying out balance correction, after the fan blade is mounted on the balancing machine 3, the positioning lug 32 is in opposite insertion engagement with the positioning groove 23, and radial limiting is carried out between the fan blade and the shaft sleeve 31 in the balancing machine 3 through the positioning lug 32 and the positioning groove 23 so as to replace the original starting chuck mode to carry out radial limiting treatment between the fan blade and the shaft sleeve 31, the shaft sleeve 31 is not required to clamp the motor shaft 21, the risk that the motor shaft 21 is clamped is prevented, and motor noise is not easy to occur in the operation process.
Example 2:
the present embodiment is different from embodiment 1 in that a structure for axially limiting the top of the blade body 1 is further provided on the top of the balancing machine 3.
Referring to fig. 5, specifically, two sets of stand frames 4 are installed at the top of the balancing machine 3, and the two sets of stand frames 4 are disposed on the left and right sides of the shaft sleeve 31. A lifting table 5 is arranged between the two groups of vertical frames 4, an air cylinder 6 is fixedly arranged on the lifting table 5, and the air cylinder 6 is vertically downwards arranged. The piston rod end of the cylinder 6 is provided with a positioning rod 7, the positioning rod 7 is vertically arranged and is aligned with the shaft sleeve 31, and the bottom of the positioning rod 7 can be embedded with a rolling ball 8.
In the process of balancing and correcting, after the fan blade body 1 is installed on the shaft sleeve 31 in the balancing machine 3, the air cylinder 6 controls the positioning rod 7 to move downwards, so that the bottom of the positioning rod 7 is pressed down on the top of the motor shaft 21 through the ball 8 to form rolling type abutting joint so as to axially limit the fan blade body 1, and the axial runout is not easy to occur in the correcting process to influence the correcting effect.
Specifically, in the present embodiment, the stand 4 includes a lower abutment 41, an upper abutment 42, and two uprights 43 installed between the lower abutment 41 and the upper abutment 42; wherein, two pole setting 43 back and forth interval arrangement, and the bottom of pole setting 43 is fixed peg graft in lower pier 41. The tops of the two vertical rods 43 are in a stepped shaft shape, the lower abutment 41 is supported and installed on the tops of the two vertical rods 43, and the lower abutment 41 is supported at the position of a stepped surface on the tops of the vertical rods 43 after being spliced by the two vertical rods 43. A vertical moving sliding table 44 is installed between the lower abutment 41 and the upper abutment 42, the vertical moving sliding table 44 is horizontally arranged and is penetrated by the two vertical rods 43 in a sliding way, the lifting table 5 is installed between the two vertical moving sliding tables 44 in the two groups of vertical rods 43, and two ends of the lifting table 5 are respectively connected to the inner sides of the two vertical moving sliding tables 44.
A driving motor 45, a speed reducer 46 and a ball screw pair 47 are arranged on the vertical frame 4 positioned on the left side; the ball screw pair 47 is vertically arranged, and the upper end and the lower end of a screw in the ball screw pair 47 are respectively rotatably arranged on the lower abutment 41 and the upper abutment 42 through supporting seats, and nuts in the ball screw pair 47 are fixedly connected to the vertical movement sliding table 44 on one side where the nuts are arranged. The upper abutment 42 is fixedly provided with a bracket 48, the driving motor 45 and the speed reducer 46 are fixedly arranged on the bracket 48, and the driving motor 45 drives the screw rod in the ball screw pair 47 to rotate through the speed reducer 46, so that the lifting table 5 is controlled to ascend or descend.
In the actual use process, the driving motor 45 controls the screw rod in the ball screw pair 47 to rotate through the reducer 46 so as to control the lifting platform 5 to ascend or descend, and the initial positions of the air cylinder 6 and the positioning rod 7 are adjusted so as to be adjusted to the proper height position.
Referring to fig. 6, specifically, in the present embodiment, the positioning rod 7 includes an upper node rod 71 and a lower node rod 72, and the balls 8 are rollably fitted and mounted to the bottom end of the lower node rod 72. The upper joint rod 71 is provided therein with a retraction chute 73, the retraction chute 73 penetrates through the bottom of the upper joint rod 71 along the extension direction of the upper joint rod 71, and the bottom opening of the upper joint rod 71 is in a convex shape. Correspondingly, the top of the lower joint rod 72 is slidably inserted into a retraction chute 73 in the lower joint rod 72, and the top of the lower joint rod 72 is in a convex shape slidably matched with the retraction chute 73. A return spring 74 is also installed in the retraction chute 73, the top of the return spring 74 is supported at the bottom of the retraction chute 73, and the bottom of the return spring 74 is supported on the lower link 72, so that the lower link 72 can be telescopically adjusted relative to the upper link 71.
In the process that the cylinder 6 controls the positioning rod 7 to move downwards and press against the fan blade body 1, the lower section rod 72 can stretch relatively to the upper section rod 71, so that the positioning rod 7 is not easy to crush the fan blade body 1 due to overlarge pressing stroke. Meanwhile, due to the pretightening force of the return spring 74, the return spring 74 can ensure that a larger pretightening pressure is applied to the fan blade body 1 through the lower joint rod 72, and can ensure that limit control is carried out on the circumferential direction of the fan blade body 1.
The embodiment of the application relates to a centrifugal fan blade balance correction device, which has the implementation principle that:
in the process of carrying out balance correction, the motor shaft 21 is preliminarily aligned and inserted into the shaft sleeve 31, and after the fan blade body 1 is adjusted, the positioning groove 23 and the positioning convex block 32 are aligned, the fan blade body 1 is pressed in, the positioning convex block 32 is meshed with the positioning groove 23, so that radial limiting treatment is carried out between the fan blade body 1 and the shaft sleeve 31, the original starting chuck mode is replaced to carry out radial limiting treatment between the fan blade body 1 and the shaft sleeve 31, the shaft sleeve 31 is not required to clamp the motor shaft 21, the risk that the motor shaft 21 is clamped can be prevented, and motor noise is not easy to occur in the operation process.
Meanwhile, after the fan blade body 1 is arranged on the shaft sleeve 31 in the balancing machine 3, the air cylinder 6 controls the positioning rod 7 to move downwards, so that the bottom of the positioning rod 7 is pressed downwards on the top of the motor shaft 21 through the ball 8 to form rolling type abutting joint so as to axially limit the fan blade body 1, and axial runout is not easy to occur in the correction process to influence the correction effect.
The embodiments of the present application are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (10)
1. A centrifugal fan blade, characterized in that: comprises a fan blade body (1) and a motor shell (2) arranged on the fan blade body (1), wherein a motor shaft (21) is integrally formed in the motor shell (2); a positioning boss (22) is arranged in the motor shell (2), and the positioning boss (22) is sleeved on a motor shaft (21) and is coaxially arranged with the motor shaft (21); the positioning boss (22) is provided with positioning grooves (23) which are uniformly distributed at intervals around the motor shaft (21).
2. A centrifugal fan blade according to claim 1, wherein: the motor casing (2) is provided with through holes (25), and the through holes (25) are uniformly distributed around the motor shaft (21); the back side of the positioning boss (22) is provided with a connecting column, and the connecting column penetrates through the through hole (25) and then is connected with the fan blade body (1).
3. A centrifugal fan blade according to claim 1, wherein: one end of the motor shaft (21) connected with the motor shell (2) is provided with a positioning base (24), the positioning base (24) is in a round table shape, and the positioning boss (22) is sleeved and clamped on the positioning base (24).
4. A centrifugal fan blade according to claim 2, wherein: the number of the through holes (25) is three, and the through holes are uniformly distributed around the motor shaft (21); the number of the connecting posts is three, and the connecting posts are uniformly distributed at intervals around the center of the positioning boss (22).
5. A centrifugal fan blade balance correction device for performing balance correction on a centrifugal fan blade according to any one of claims 1 to 4, characterized in that: the balance device comprises a balance machine (3), wherein a shaft sleeve (31) in the balance machine (3) is provided with positioning convex blocks (32), and the positioning convex blocks (32) are uniformly arranged at intervals around the axis of the shaft sleeve (31) and are used for being in butt-inserting engagement with positioning grooves (23).
6. The centrifugal fan blade balance correction device according to claim 5, wherein: the balancing machine (3) is also provided with a vertical frame (4), the vertical frame (4) is provided with a positioning rod (7), the positioning rod (7) is vertically arranged and aligned with a shaft sleeve (31) on the balancing machine (3), and the positioning rod (7) can be vertically moved and controlled; the bottom of the positioning rod (7) can be embedded with a ball (8) in a rolling way.
7. The centrifugal fan blade balance correction device according to claim 6, wherein: the number of the vertical frames (4) is two, and the vertical frames are distributed on the left side and the right side of the shaft sleeve (31); a lifting table (5) is arranged between the two groups of vertical frames (4), and an air cylinder (6) is arranged on the lifting table (5) and is used for controlling the positioning rod (7) to move upwards or downwards.
8. The centrifugal fan blade balance correction device according to claim 7, wherein: the vertical frame (4) comprises a lower abutment (41), an upper abutment (42) and two vertical rods (43) arranged between the lower abutment (41) and the upper abutment (42), wherein a vertical movement sliding table (44) is arranged between the lower abutment (41) and the upper abutment (42), the vertical movement sliding table (44) is installed in the vertical rods (43) in a lifting adjustment type, and two ends of the lifting table (5) are respectively installed in the vertical movement sliding tables (44) in the two groups of vertical frames (4).
9. The centrifugal fan blade balance correction device according to claim 8, wherein: a driving motor (45) and a ball screw pair (47) are mounted on any vertical frame (4), the ball screw pair (47) is vertically arranged, the upper end and the lower end of a screw in the ball screw pair (47) are respectively rotatably mounted on a lower abutment (41) and an upper abutment (42) through supporting seats, and nuts in the ball screw pair (47) are fixedly connected to a vertical sliding table (44) on one side where the nuts are located; the driving motor (45) is used for driving a screw rod in the ball screw pair (47) to rotate.
10. The centrifugal fan blade balance correction device according to claim 6, wherein: the positioning rod (7) comprises an upper node rod (71) and a lower node rod (72), and the ball (8) can be embedded and arranged at the bottom end of the lower node rod (72) in a rolling way; a retraction sliding groove (73) is formed in the upper joint rod (71), and the retraction sliding groove (73) penetrates through the bottom of the upper joint rod (71) along the extending direction of the upper joint rod (71); the top of the lower joint rod (72) is slidably inserted into a retraction chute (73) in the lower joint rod (72), and the lower joint rod (72) and the upper joint rod (71) cannot be separated; a return spring (74) is further arranged in the retraction chute (73), the top of the return spring (74) is supported at the bottom of the retraction chute (73), and the bottom of the return spring (74) is supported on the lower joint rod (72).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311154119.XA CN117072470A (en) | 2023-09-07 | 2023-09-07 | Fresh air system centrifugal fan blade with positioning structure and balance correction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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