CN211626807U - Dynamic balance dummy shaft of fan - Google Patents
Dynamic balance dummy shaft of fan Download PDFInfo
- Publication number
- CN211626807U CN211626807U CN202020181384.2U CN202020181384U CN211626807U CN 211626807 U CN211626807 U CN 211626807U CN 202020181384 U CN202020181384 U CN 202020181384U CN 211626807 U CN211626807 U CN 211626807U
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- fan blade
- fan
- connecting portion
- installation department
- dynamic balance
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Abstract
The utility model discloses a fan dynamic balance dummy shaft, including fan blade installation department, first connecting portion, second connecting portion, be provided with fan blade installation backstop between fan blade installation department and the first connecting portion, be provided with fan blade connection keyway on the fan blade installation department, be provided with spacing portion between second connecting portion and the fan blade installation department, be provided with the screw thread in the spacing portion, there is stop nut through threaded connection in the spacing portion, stop nut and spacing portion go up the screw thread direction of screwing unanimous with the direction of rotation of axle, the axial length L of fan blade installation department is less than the length of fan blade axle. The utility model discloses according to fan blade structure and size setting, can use with the dynamic balancing machine cooperation, the normal operating conditions of simulation fan blade on the fan, the limit nut who sets up simultaneously can effectively fix the position of fan blade on the dynamic balancing false epaxial, and the simulation result is more accurate.
Description
Technical Field
The utility model relates to a city rail vehicle air conditioning unit fan blade dynamic balance test device, concretely relates to fan dynamic balance dummy shaft.
Background
After a rotor of the fan and the fan blades are installed, the end faces are parallel and level, and the fan blades cannot be placed in a dynamic balancing machine to perform a dynamic balancing test, so that whether the unbalance amount of the fan blades meets the G2.5 requirement cannot be judged, the dynamic balancing test of the fan blades cannot be performed normally, the vibration value of the fan is too large due to partial produced fan, the maintenance quality of the fan is affected, the service life of the fan is reduced, a dummy shaft must be designed and manufactured automatically to simulate the normal operation condition of the fan blades on the fan, and if the dummy shaft with the corresponding size does not exist, the dynamic balancing test cannot be performed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fan dynamic balance dummy shaft solves the problem that fan blade dynamic balance test can not normally go on.
In order to solve the technical problem, the utility model adopts the following technical scheme:
the fan dynamic balance dummy shaft comprises a fan blade installation part, a first connection part and a second connection part, a fan blade installation stop is arranged between the fan blade installation part and the first connection part, a fan blade connection key groove is formed in the fan blade installation part, a limiting part is arranged between the second connection part and the fan blade installation part, threads are arranged on the limiting part, and a limiting nut is connected to the limiting part through threads.
Preferably, the screwing direction of the screw threads on the limiting nut and the limiting part is consistent with the rotating direction of the shaft.
Further, the axial length L of the fan blade mounting part is smaller than the length of the fan blade shaft.
Preferably, the first connecting portion and the second connecting portion are respectively provided with a first bracket mounting portion and a second bracket mounting portion, and the surfaces of the first bracket mounting portion and the second bracket mounting portion are of frosted structures.
Furthermore, be provided with belt transmission portion on the first connecting portion, belt transmission portion slides and sets up on first connecting portion, is provided with screw fastener on the belt transmission portion, it is provided with the screw hole to set up the correspondence on the first connecting portion.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses according to fan blade structure and size setting, can use with the dynamic balancing machine cooperation, the normal operating conditions of simulation fan blade on the fan, the limit nut who sets up simultaneously can effectively fix the position of fan blade on the dynamic balancing false epaxial, and the simulation result is more accurate.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the fan blade mounting structure comprises a fan blade mounting part 1, a limiting part 2, a fan blade mounting stop 3, a first connecting part 4, a second connecting part 5, a fan blade connecting key groove 6, a first bracket mounting part 41, a belt transmission part 42 and a second bracket mounting part 52.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
A fan dynamic balance false shaft comprises a fan blade mounting part 1, a first connecting part 4 and a second connecting part 5, a fan blade mounting stop 3 is arranged between the fan blade mounting part 1 and the first connecting part 4, a fan blade connecting key groove 6 is arranged on the fan blade mounting part 1, a limiting part 2 is arranged between the second connecting part 5 and the fan blade mounting part 1, a thread is arranged on the limiting part 2, a limiting nut is connected on the limiting part 2 through a thread, the screwing direction of the thread on the limiting nut and the limiting part 2 is consistent with the rotating direction of a shaft, the shaft length L of the fan blade mounting part 1 is smaller than the length of a fan blade shaft, the shaft length of the fan blade mounting part 1 is arranged according to the shaft length of a fan blade when in design, so that the limiting nut can better fix the position of the fan blade, and the fan blade is prevented from generating unnecessary shaking in the test process and affecting, the screwing direction of the thread arranged on the limiting part 2 is consistent with the rotating running direction of the false shaft, so that the situation that a limiting nut is loosened in the test running process is avoided, and the dynamic balance test of the fan blades is conveniently and smoothly finished.
Example 2
On the basis of embodiment 1, be provided with first leg mount portion 41 and second leg mount portion 52 on first connecting portion 4 and the second connecting portion 5 respectively, first leg mount portion 41 and second leg mount portion 52 surface set up to dull polish structure, and dull polish structure can effectively improve the frictional force of false axle both ends and dynamic balancing machine connection bearing, can avoid axle and bearing to produce and slide to can reduce the degree of cooperation of first leg mount portion 41 and second leg mount portion 52, make the installation more laborsaving.
Example 3
On the basis of the embodiment 1-2, the first connecting portion 4 is provided with the belt transmission portion 42, the belt transmission portion 42 is slidably disposed on the first connecting portion 4, the belt transmission portion 42 is provided with the screw fastening device, the first connecting portion 4 is correspondingly provided with the screw hole, the belt transmission portion 42 is connected with the transmission belt to drive the dummy shaft to rotate, the surface of the belt transmission portion 42 is provided with the anti-slip material, so that the power transmission rate of the belt can be improved, the belt transmission portion 42 is provided with the sliding structure, the position of the belt transmission portion 42 can be adjusted according to the position of the belt, meanwhile, the corresponding screw hole is drilled on the shaft at the corresponding position, after the position is adjusted, the screw on the screw fastening device is screwed into the corresponding screw hole on the shaft, so that the fixing of the belt transmission portion 42 can be completed, the dynamic balance dummy shaft is driven to rotate, so as to complete the dynamic balance test of the fan, the dynamic balancing machine provides a power source, the normal running state of the fan blade in the fan is simulated, whether the fan blade meets the G2.5 requirement is judged according to a dynamic balance measured value, dynamic balance testing personnel correct the fan blade according to a test result, the unbalance amount of the fan blade is reduced, the vibration value of the fan can be reduced, the abrasion condition of a fan bearing and an end cover is reduced, the overhauling quality is improved, and the service life of the fan is prolonged.
Reference throughout this specification to embodiments means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (5)
1. Fan dynamic balance dummy shaft, including fan blade installation department (1), first connecting portion (4), second connecting portion (5), be provided with fan blade installation backstop (3) between fan blade installation department (1) and first connecting portion (4), be provided with fan blade connection keyway (6), its characterized in that on fan blade installation department (1): and a limiting part (2) is arranged between the second connecting part (5) and the fan blade mounting part (1), a thread is arranged on the limiting part (2), and a limiting nut is connected to the limiting part (2) through the thread.
2. The fan dynamic balance dummy shaft of claim 1, characterized in that: the screwing direction of the threads on the limiting nut and the limiting part (2) is consistent with the rotating direction of the shaft.
3. The fan dynamic balance dummy shaft of claim 1, characterized in that: the axial length L of the fan blade mounting part (1) is smaller than the length of a fan blade shaft.
4. The fan dynamic balance dummy shaft of claim 1, characterized in that: first connecting portion (4) and second connecting portion (5) are last to be provided with first support installation department (41) and second support installation department (52) respectively, first support installation department (41) and second support installation department (52) surface set up to dull polish structure.
5. The fan dynamic balance dummy shaft of claim 1, characterized in that: be provided with belt transmission portion (42) on first connecting portion (4), belt transmission portion (42) slide to set up on first connecting portion (4), are provided with screw fastening device on belt transmission portion (42), it is provided with the screw hole to set up the correspondence on first connecting portion (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020181384.2U CN211626807U (en) | 2020-02-18 | 2020-02-18 | Dynamic balance dummy shaft of fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020181384.2U CN211626807U (en) | 2020-02-18 | 2020-02-18 | Dynamic balance dummy shaft of fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211626807U true CN211626807U (en) | 2020-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020181384.2U Active CN211626807U (en) | 2020-02-18 | 2020-02-18 | Dynamic balance dummy shaft of fan |
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| CN (1) | CN211626807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114136541A (en) * | 2021-12-02 | 2022-03-04 | 格力电器（武汉）有限公司 | Device for preventing fan blade dynamic balance from missing retest |
-
2020
- 2020-02-18 CN CN202020181384.2U patent/CN211626807U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114136541A (en) * | 2021-12-02 | 2022-03-04 | 格力电器（武汉）有限公司 | Device for preventing fan blade dynamic balance from missing retest |
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