CN209228691U - A kind of impeller balance shaft device - Google Patents
A kind of impeller balance shaft device Download PDFInfo
- Publication number
- CN209228691U CN209228691U CN201821958822.0U CN201821958822U CN209228691U CN 209228691 U CN209228691 U CN 209228691U CN 201821958822 U CN201821958822 U CN 201821958822U CN 209228691 U CN209228691 U CN 209228691U
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- impeller
- balance shaft
- round nut
- screw hole
- shaft
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Abstract
The utility model discloses a kind of impeller balance shaft devices, including balance shaft body, taper shaft and the impeller being installed on taper shaft, balance shaft body is connected to the larger diameter end of taper shaft, fixed device is provided in balance shaft body, for applying the tightening force towards larger diameter end to impeller, so that impeller is closely attached on the periphery of taper shaft.Such set-up mode can damage to avoid to balance shaft and axial fan hub inner surface, improve the service life of balance shaft, and structure is simpler, simplify draught fan impeller dynamic balancing technics process, it can guarantee the precision of balance shaft, to guarantee that draught fan impeller balances, guarantee fan safe, stable operation.
Description
Technical field
The utility model relates to fan impeller production technical fields, fill more specifically to a kind of impeller balance axis
It sets.
Background technique
Ventilation blower is to improve gas pressure by the mechanical energy of input and supply gas side by side the machinery of body, it is a kind of driven
Fluid machinery；Ventilation blower is used widely in fields such as electric power, petrochemical industry, metallurgy, ventilation, environmental protection.
The mode that previous fan impeller and its balance shaft generallyd use be shock or hydraulic top is stretched is dismounted,
Shock mode inevitably damages the surface of balance shaft and fan impeller wheel hub, and there are structure type complexity, occupancy are empty for hydraulic way
Between it is big, dismounting heavy workload and working hour is long the disadvantages of.
In conclusion how simply to be installed to fan impeller, and reduce to balance shaft and fan impeller wheel hub
It causes to damage, be a problem to be solved by those skilled in the art.
Utility model content
In view of this, impeller can simply be installed on flat the purpose of the utility model is to provide a kind of impeller balance shaft device
It weighs on axis, and avoids the damage of impeller and balance shaft.To achieve the goals above, the utility model provides the following technical solutions:
A kind of impeller balance shaft device, including balance shaft body, taper shaft and the impeller being installed on the taper shaft, institute
It states balance shaft body and is connected to the larger diameter end of the taper shaft, be provided with fixed device in the balance shaft body, be used for pair
The impeller applies the tightening force towards the larger diameter end, so that the impeller is closely attached on the periphery of the taper shaft.
Preferably, the fixed device includes round nut, and the balance shaft body is provided with matched with the round nut
Thread segment is provided with the fixing piece for tensing the round nut and the impeller on the round nut.
Preferably, the fixing piece is positioning bolt, and the circle end face of the round nut is equipped with and the positioning bolt
The first screw hole to match, the wheel hub of the impeller are equipped with the second screw hole to match with the positioning bolt, the positioning
Bolt passes through first screw hole and second screw hole.
Preferably, the quantity of first screw hole is 6, and first screw hole is uniformly distributed in the outer of the round nut
On nose circle face.
Preferably, 6 are provided on the excircle of the round nut to be uniformly distributed on the excircle of the round nut
Groove.
Preferably, the shape of the groove and the hook of standard hook spanner match.
A kind of impeller balance shaft device provided herein, including balance shaft body, taper shaft and be installed on taper shaft
On impeller, balance shaft body is connected to the larger diameter end of taper shaft, balances and be provided with fixed device in shaft body, for leaf
Wheel applies the tightening force towards larger diameter end, so that impeller is closely attached on the periphery of taper shaft.
By the way that taper shaft, then the fixed device of setting in balance shaft body are arranged in balance shaft, fixed device can be right
The impeller being installed on taper shaft generates the power by taper axial direction balance shaft main body axial direction, is clamped in impeller on taper shaft, makes
Balance shaft will not generate relative movement between impeller when rotated；Such set-up mode can be to avoid to balance shaft and impeller of blower
Hub inner surface damages, and improves the service life of balance shaft, and structure is simpler, simplifies draught fan impeller dynamic balancing technics stream
Journey, can guarantee the precision of balance shaft, to guarantee that draught fan impeller balances, guarantee fan safe, stable operation.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the schematic diagram of balance shaft provided by the utility model；
Fig. 2 is the schematic diagram of round nut provided by the utility model；
Fig. 3 is the installation diagram of impeller balance shaft device provided by the utility model.
In Fig. 1-3:
1- thread segment, 2- larger diameter end, 3- taper shaft, 4- groove, 5- round nut, the first screw hole of 6-, 7- impeller, 8- positioning
Bolt.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
The core of the utility model is to provide a kind of impeller balance shaft device, and impeller can be simply installed in balance shaft, and
Avoid the damage of impeller and balance shaft.
Fig. 1, Fig. 2 and Fig. 3 are please referred to, Fig. 1 is the schematic diagram of balance shaft provided by the utility model；Fig. 2 is that this is practical
The schematic diagram of round nut provided by novel；Fig. 3 is the installation diagram of impeller balance shaft device provided by the utility model.
A kind of impeller balance shaft device is put down including balance shaft body, taper shaft 3 and the impeller 7 being installed on taper shaft 3
Weighing apparatus shaft body is connected to the larger diameter end 2 of taper shaft 3, balances and is provided with fixed device in shaft body, for applying court to impeller 7
To the tightening force of larger diameter end 2, so that impeller 7 is closely attached on the periphery of taper shaft 3.
It should be noted that the main part of balance shaft can be cylinder type structure, it is of course also possible to be other shapes
Shape, such as pyramidal structure, as long as meeting the fixed dress that can be set on the periphery for impeller 7 to be set in taper shaft 3
The shape set is included in the protection scope of the application.
Balance shaft is revolving part, general to be made of high-intensitive, high rigidity steel alloy, according to JB/T9101 standard, is put down
Weighing apparatus axis selection is not inferior to 40Cr generally.
Balance shaft can have above two parts: balance shaft body and taper shaft 3, for the ease of installation, usually setting balance
Shaft body is connected to the larger diameter end 2 of taper shaft 3, and impeller 7 is installed on taper shaft 3, it follows that taper shaft 3 is small straight
The diameter at diameter end can be the wheel hub internal diameter less than impeller 7.
Impeller 7 is to be set on the periphery of taper shaft 3, it is to be understood that certain of impeller 7 and the taper shaft 3 of balance shaft
Gap is not present between a position, that is, impeller 7 can be connected in some position of balance shaft, it follows that balance shaft
The diameter of larger diameter end 2 may be greater than the wheel hub internal diameter of impeller 7.
The fixation device being arranged in balance shaft body can be such that impeller 7 is set on the periphery of taper shaft 3, it is possible to understand that
That fixed device can be supplied to impeller 7 with power such as pulling force or elastic force, make impeller 7 by it is axial, by the small of taper shaft 3
Power of the diameter end to 2 direction of larger diameter end；Since impeller 7 and balance shaft are rotated jointly, so, impeller 7 and balance shaft it
Between there is comparable frictional force, make to produce relative sliding between impeller 7 and balance shaft.
Impeller balance shaft device provided herein includes taper shaft 3 and connect with the larger diameter end 2 of taper shaft 3 flat
Weigh shaft body, and impeller 7 is equipped on taper shaft 3, balances and is additionally provided in shaft body for impeller 7 to be clamped in taper shaft 3
Fixation device on periphery；By the way that taper shaft 3 is arranged in balance shaft, then near the larger diameter end 2 of taper shaft 3, setting is fixed
Device, fixed device can generate from taper shaft 3 to the power of balance shaft body axial direction the impeller 7 being installed on taper shaft 3, make
Impeller 7 is clamped on taper shaft 3, and balance shaft is made not generate relative movement, such set-up mode between impeller 7 when rotated
It can be damaged to avoid to balance shaft and axial fan hub inner surface, improve the service life of balance shaft, structure is simpler, letter
Change 7 dynamic balancing technics process of impeller, can guarantee the precision of balance shaft, to guarantee that impeller 7 balances, guarantees fan safe, steady
Fixed operation.
On the basis of the above embodiments, fixed device includes round nut 5, and balance shaft body is provided with and round nut 5
The thread segment 1 matched is provided with the fixing piece for tensing round nut 5 and impeller 7 on round nut 5.
It should be noted that fixing piece is for tensing round nut 5 and impeller 7, that is to say, that fixing piece round nut 5 it
Between be fixed after, round nut 5 has that axial, threadingly section 1 is to the pulling force in 3 direction of taper shaft, and impeller 7 is born and circle
The pulling force of 5 opposite direction of nut, same size.
For the ease of placing balance shaft, supporting section usually is set at the both ends of balance shaft, the application can will balance herein
The both ends of axis are provided with supporting section, as shown in Figure 1, being followed successively by the first supporting section, thread segment 1, taper shaft 3 and second from left to right
Supporting section, it should be noted that man-hour requirement can make round nut 5 to supporting section and 7 sets of impeller are loaded into corresponding portion adding
Position.
The position of round nut 5 can be adjusted on thread segment 1, since 7 wheel hub internal diameter of variety classes impeller is different, wheel
Hub is clamped in the difference of the position on taper shaft 3, so, it can be adapted for a variety of impellers 7 using the adjustable position of round nut 5
Installation.
Balance shaft structure shown in FIG. 1 is one of involved in technical solution provided in the application implements
Example is specifically arranged the parameters such as position, setting length and setting quantity and is not construed as limiting.
The present embodiment accordingly places round nut 5, then on round nut 5 by the way that thread segment 1 is arranged in balance shaft body
Fixing piece is set, makes to generate mutual pulling force between round nut 5 and impeller 7, so that clamping impeller 7, easy to process, and circle spiral shell
5 materials of mother are convenient, and cost of manufacture is lower.
In a kind of specific embodiment about fixing piece, fixing piece is positioning bolt 8, the circle end face of round nut 5
It is equipped with the first screw hole 6 to match with positioning bolt 8, the wheel hub of impeller 7 is equipped with the second spiral shell to match with positioning bolt 8
Hole, positioning bolt 8 pass through the first screw hole 6 and the second screw hole.
It should be noted that the direction where the central axis of the first screw hole 6 is preferably axial parallel with round nut 5, the
The direction of two screw holes be preferably it is axial parallel with impeller 7, i.e., the axial direction of impeller 7, the axial direction of round nut 5, the first screw hole 6 axis
It is parallel to each other to the axial direction of the, axial direction of the second screw hole and balance shaft.
Optionally, the axial direction of the first screw hole 6 and the axial of round nut 5 can also be intersected, the axial direction and impeller 7 of the second screw hole
It is axial intersect, it is however noted that, when the direction of the first screw hole 6 and the second screw hole is arranged, positioning bolt 8 can be simultaneously
Across the first screw hole 6 and the second screw hole, make to generate mutual pulling force between round nut 5 and impeller 7, so that impeller 7 is clamped in cone
It spends on axis 3.
Positioning bolt 8 can be worn from the first screw hole 6 to the second screw hole, can also be worn from the second screw hole to the first screw hole 6, fixed
The direction of position bolt 8 is not construed as limiting herein, as long as can be considered the application also cross the first screw hole 6 and the second screw hole
Provided technical solution.
The length of positioning bolt 8 is not construed as limiting herein, can be determined according to the actual situation, for example, when 5 position of round nut is fixed
When, the internal diameter of 7 wheel hub of impeller is smaller, and impeller 7 just will increase at a distance from round nut 5, just needs at this time more relatively long
Positioning bolt 8 is fixed；When 5 position of round nut is fixed, the internal diameter of 7 wheel hub of impeller is larger, impeller 7 and round nut 5 away from
From that will reduce, positioning bolt 8 more relatively short at this time round nut 5 and impeller 7 can also be fixed.
The present embodiment is provided with positioning bolt 8 on the circle end face of round nut 5 on the basis of the above embodiments, positioning
Bolt 8 passes through the first screw hole 6 and the second screw hole can make to generate phase between round nut 5 and impeller 7 by screwed in place bolt 8
Mutual pulling force is clamped in impeller 7 on taper shaft 3, convenient for disassembly and assembly, easy to process, and can greatly reduce impeller 7 and balance
The damage of axis.
On the basis of the above embodiments, the quantity of the first screw hole 6 is 6, and the first screw hole 6 is uniformly distributed in round nut
On 5 circle end face.
It should be noted that the first screw hole 6 that the present embodiment is uniformly arranged on the circle end face of round nut 5, can make
After every 60 ° of the rotation of round nut 5, by the way that positioning bolt 8 is arranged, it can the first screw hole 6 is made to be connected with the second screw hole.
The quantity of second screw hole can be 1 or 2, when the quantity of the second screw hole is 2, can make the second screw hole
Position be uniformly distributed on impeller 7, round nut 5 and impeller 7 are pulled by positioning bolt 8, guarantee round nut 5 and 7 institute of impeller
The pulling force received be it is axial and uniformly, so that round nut 5 and impeller 7 is not easy deflection, more conducively centering.
Quantity set-up mode herein is one of technical solution provided herein specific embodiment, not generation
Table scheme itself.
On the basis of the above embodiments, it is provided with 6 on the excircle of round nut 5 and is uniformly distributed in the outer of round nut 5
Groove 4 on circumference.
It should be noted that the position that groove 4 is arranged herein is on the excircle of round nut 5, in order to convenient for card
Spanner makes to dismount more convenient.
The shape of groove 4 can there are many, for example the shape of groove 4 and the hook of standard hook spanner can be made to match.
Hook-shaped spanner is also known as crescent wrenches, is commonly called as hook wrench, for twisting restricted nut of thickness etc.；It is exclusively used in tearing open
Entrucking, the round nut 5 on mechanical equipment can be convenient disassembly using hook spanner since the usual thickness of round nut 5 is smaller.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Impeller balance shaft device provided by the utility model is described in detail above.It is used herein specifically
A example is expounded the principles of the present invention and embodiment, and the above embodiments are only used to help understand originally
The method and its core concept of utility model.It should be pointed out that for those skilled in the art, not departing from
Under the premise of the utility model principle, several improvements and modifications can be made to this utility model, these improvement and modification
It falls into the protection scope of the utility model claims.
Claims (6)
1. a kind of impeller balance shaft device, which is characterized in that including balance shaft body, taper shaft (3) and be installed on the taper
Impeller (7) on axis (3), the balance shaft body are connected to the larger diameter end (2) of the taper shaft (3), the balance shaft master
Fixed device is provided on body, for the impeller (7) to be applied with the tightening force towards the larger diameter end (2), so that described
Impeller (7) is closely attached on the periphery of the taper shaft (3).
2. impeller balance shaft device according to claim 1, which is characterized in that the fixed device includes round nut (5),
The balance shaft body be provided with the round nut (5) matched thread segment (1), be provided on the round nut (5) and be used for
Tense the fixing piece of the round nut (5) and the impeller (7).
3. impeller balance shaft device according to claim 2, which is characterized in that the fixing piece is positioning bolt (8), institute
The circle end face for stating round nut (5) is equipped with the first screw hole (6) to match with the positioning bolt (8), the impeller (7)
Wheel hub is equipped with the second screw hole to match with the positioning bolt (8), and the positioning bolt (8) passes through first screw hole
(6) and second screw hole.
4. impeller balance shaft device according to claim 3, which is characterized in that the quantity of first screw hole (6) is 6
It is a, and first screw hole (6) is uniformly distributed on the circle end face of the round nut (5).
5. according to impeller balance shaft device described in claim 2 to 4 any one, which is characterized in that the round nut (5)
The groove (4) being provided on excircle on the excircle that 6 are uniformly distributed in the round nut (5).
6. impeller balance shaft device according to claim 5, which is characterized in that the shape and standard hook of the groove (4)
The hook of shape spanner matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821958822.0U CN209228691U (en) | 2018-11-26 | 2018-11-26 | A kind of impeller balance shaft device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821958822.0U CN209228691U (en) | 2018-11-26 | 2018-11-26 | A kind of impeller balance shaft device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209228691U true CN209228691U (en) | 2019-08-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821958822.0U Active CN209228691U (en) | 2018-11-26 | 2018-11-26 | A kind of impeller balance shaft device |
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| Country | Link |
|---|---|
| CN (1) | CN209228691U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112444207A (en) * | 2020-11-19 | 2021-03-05 | 北京科技大学 | Roadway surface displacement monitoring device and method for area multipoint continuous measurement |
-
2018
- 2018-11-26 CN CN201821958822.0U patent/CN209228691U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112444207A (en) * | 2020-11-19 | 2021-03-05 | 北京科技大学 | Roadway surface displacement monitoring device and method for area multipoint continuous measurement |
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