CN202612186U - Hollow main shaft structure for double-support multi-grade centrifugal blower - Google Patents
Hollow main shaft structure for double-support multi-grade centrifugal blower Download PDFInfo
- Publication number
- CN202612186U CN202612186U CN 201120371177 CN201120371177U CN202612186U CN 202612186 U CN202612186 U CN 202612186U CN 201120371177 CN201120371177 CN 201120371177 CN 201120371177 U CN201120371177 U CN 201120371177U CN 202612186 U CN202612186 U CN 202612186U
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- nose section
- spindle nose
- main shaft
- shaft
- centrifugal blower
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Abstract
The utility model relates to the centrifugal blower field of and particularly relates to a hollow main shaft structure for a double-support multi-grade centrifugal blower. The hollow main shaft structure comprises a left shaft head section (1), a middle shaft (2) and a right shaft head section (3) and the hollow main shaft structure is characterized in that each of the middle shaft (2) and the left shaft head section (1) is of a hollow structure and the right shaft head section (3) is of a solid structure; and a transmission end is arranged at the right shaft head section. In order to guarantee the dynamic balance precision of the main shaft, a main shaft dynamic balance part is arranged at the left shaft head section and the static/dynamic balance is maintained through the adoption of a gravimetric removal method. Under the conditions of equal rigidity and equal transmission torque, the hollow main shaft structure is advantageous in that the weight of the main shaft is 25-30% less than that of a solid shaft of the same shape and the same size.
Description
Technical field
The utility model relates to the centrifugal blower field, particularly a kind of dual-gripper multistage centrifugal blower hollow spindle structure.
Background technique
Domestic centrifugal blower main shaft is the single solid steel axle at present, and the main shaft blank adopts forging or hot rolling bar; Its main feature is: processing technology is simple, and consumptive material is many, and main shaft weight is big, and bearing load is big.Because multistage centrifugal blower increases because of pressure ratio increases progression, corresponding centre of support span and main axis length also increase thereupon.Simultaneously because the rotor critical speed design demand must guarantee that big span main shaft is by enough rigidity; The measure of for this reason often taking is for adding large-diameter; Main shaft weight increases greatly like this.Type for adopting rolling bearing structure has increased the weight of bearing load, has shortened bearing life, brings a series of problems.
Summary of the invention
In order to overcome the shortcoming of above-mentioned existing technology, the purpose of the utility model is to provide a kind of good rigidly, mid power dual-gripper multistage centrifugal blower hollow spindle structure in light weight, rational in infrastructure.
In order to achieve the above object; The technological scheme that the utility model adopts is: a kind of dual-gripper multistage centrifugal blower hollow spindle structure; Comprise left spindle nose section, jack shaft, right spindle nose section; It is characterized in that: jack shaft and left spindle nose section are hollow-core construction, and right spindle nose section is a solid construction, and driving end is in right spindle nose section.
Left side spindle nose section and right spindle nose section adopt forging processing; Jack shaft adopts transmission shaft to process with thick walled steel tube; Jack shaft and left spindle nose section and the welding of right spindle nose section, postwelding is heat-treated stress-removal, is finish-machined to then to be the finished product axle.
Left side spindle nose section has the coaxial clyinder of two sections different-diameters, and the length that diameter is little is long, and the length that diameter is big is short, section and jack shaft welding that diameter is big, and the big section diameter of diameter is greater than the diameter of jack shaft, section diameter and right spindle nose section equal diameters that diameter is little.
The utility model has the advantages that; Because centrifugal blower hollow spindle jack shaft is a hollow-core construction, left spindle nose section is a hollow-core construction, and right spindle nose section is a solid construction, and driving end is in right spindle nose section.For guaranteeing the main shaft dynamic balance accuracy, designed the dynamic balancing position in left spindle nose section, adopt the quiet/dynamic balancing of going weighting method to carry out.In equal rigidity with transmit under the equal torque conditions, the main shaft of the utility model structure is than identical appearance size solid shaft weight reduction 25%～30%.
Below in conjunction with embodiment's accompanying drawing the utility model is described further:
Description of drawings
Fig. 1 is the utility model example structure schematic representation.
Among the figure, 1, left spindle nose section; 2, jack shaft; 3, right spindle nose section; 4, driving end; 5, main shaft dynamic balancing position.
Embodiment
A kind of dual-gripper multistage centrifugal blower hollow spindle structure comprises left spindle nose section 1, jack shaft 2, right spindle nose section 3, it is characterized in that: jack shaft 2 is hollow-core construction with left spindle nose section 1, and right spindle nose section 3 is a solid construction, and driving end is in right spindle nose section.
Left side spindle nose section 1 adopts forging processing with right spindle nose section 3; Jack shaft 2 adopts transmission shaft to process with thick walled steel tube; Jack shaft 2 and left spindle nose section 1 and right spindle nose section 3 welding, postwelding is heat-treated stress-removal, is finish-machined to then to be the finished product axle.
For guaranteeing the main shaft dynamic balance accuracy; Left side spindle nose section 1 coaxial clyinder by two sections different-diameters constitutes; The length that diameter is little is long, and the length that diameter is big is short, section and jack shaft 2 welding that diameter is big; The big section diameter of diameter is greater than diameter, the short diameter that diameter is little and right spindle nose section 3 equal diameters of jack shaft 2.The structure of left side spindle nose section 1 has formed dynamic balancing, and left spindle nose section 1 adopts the quiet/dynamic balancing of going weighting method to carry out.
The utility model has the advantages that; Because centrifugal blower hollow spindle jack shaft is a hollow-core construction, left spindle nose section is a hollow-core construction, and right spindle nose section is a solid construction, and driving end 4 is in right spindle nose section.For guaranteeing the main shaft dynamic balance accuracy, designed main shaft dynamic balancing position 5 in left spindle nose section, adopt the quiet/dynamic balancing of going weighting method to carry out.In equal rigidity with transmit under the equal torque conditions, the main shaft of the utility model structure is than identical appearance size solid shaft weight reduction 25%～30%.
Claims (4)
1. dual-gripper multistage centrifugal blower hollow spindle structure; Comprise left spindle nose section (1), jack shaft (2), right spindle nose section (3); It is characterized in that: jack shaft (2) and left spindle nose section (1) are hollow-core construction, and right spindle nose section (3) is a solid construction, and driving end is in right spindle nose section.
2. a kind of dual-gripper multistage centrifugal blower hollow spindle structure according to claim 1 is characterized in that: left spindle nose section (1) and right spindle nose section (3) adopt forging processing; Jack shaft (2) adopts transmission shaft to process with thick walled steel tube; Jack shaft (2) and left spindle nose section (1) and right spindle nose section (3) welding, postwelding is heat-treated stress-removal, is finish-machined to then to be the finished product axle.
3. a kind of dual-gripper multistage centrifugal blower hollow spindle structure according to claim 1, it is characterized in that: left spindle nose section (1) has the coaxial clyinder of two sections different-diameters.
4. a kind of dual-gripper multistage centrifugal blower hollow spindle structure according to claim 3, it is characterized in that: the length that diameter is little is long, and the length that diameter is big is short, section and jack shaft (2) welding that diameter is big.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120371177 CN202612186U (en) | 2011-09-30 | 2011-09-30 | Hollow main shaft structure for double-support multi-grade centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120371177 CN202612186U (en) | 2011-09-30 | 2011-09-30 | Hollow main shaft structure for double-support multi-grade centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202612186U true CN202612186U (en) | 2012-12-19 |
Family
ID=47345890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120371177 Expired - Fee Related CN202612186U (en) | 2011-09-30 | 2011-09-30 | Hollow main shaft structure for double-support multi-grade centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202612186U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352860A (en) * | 2011-09-30 | 2012-02-15 | 西安胜唐鼓风机有限公司 | Hollow main shaft for double-support multi-grade centrifugal blower |
| CN106862880A (en) * | 2017-03-06 | 2017-06-20 | 中航动力株洲航空零部件制造有限公司 | hollow shaft processing method |
-
2011
- 2011-09-30 CN CN 201120371177 patent/CN202612186U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102352860A (en) * | 2011-09-30 | 2012-02-15 | 西安胜唐鼓风机有限公司 | Hollow main shaft for double-support multi-grade centrifugal blower |
| CN106862880A (en) * | 2017-03-06 | 2017-06-20 | 中航动力株洲航空零部件制造有限公司 | hollow shaft processing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20200930 |