CN102352860A - Hollow main shaft for double-support multi-grade centrifugal blower - Google Patents
Hollow main shaft for double-support multi-grade centrifugal blower Download PDFInfo
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- CN102352860A CN102352860A CN2011102944771A CN201110294477A CN102352860A CN 102352860 A CN102352860 A CN 102352860A CN 2011102944771 A CN2011102944771 A CN 2011102944771A CN 201110294477 A CN201110294477 A CN 201110294477A CN 102352860 A CN102352860 A CN 102352860A
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- nose section
- spindle nose
- diameter
- centrifugal blower
- shaft
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Abstract
The invention relates to the field of a centrifugal blower and provides a hollow main shaft for a double-support multi-grade centrifugal blower. The hollow main shaft comprises a left shaft head section (1), a middle shaft (2) and a right shaft head section (3) and is characterized in that the middle shaft (2) and the left shaft head section (1) are of a hollow structure and the right shaft head section (3) is of a solid structure; and a transmission end is arranged on the right shaft head section. The left shaft head section is of a hollow structure, the right shaft head section is of a solid structure, and the transmission end is arranged on 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 on the left shaft head section and a gravimetric removal method is adopted to carry out static/dynamic balance. Under the conditions of equal rigidity and equal transmission torque, compared with a solid shaft of the same shape and size, the main shaft provided by the invention has the advantage that the weight is reduced by 25-30%.
Description
Technical field
The present invention relates to the centrifugal blower field, particularly a kind of dual-gripper multistage centrifugal blower hollow spindle.
Technical background
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 prior art, the object of the present invention is to provide a kind of good rigidly, mid power dual-gripper multistage centrifugal blower hollow spindle in light weight, rational in infrastructure.
In order to achieve the above object; The technological scheme that the present invention adopts is: a kind of dual-gripper multistage centrifugal blower hollow spindle; 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; 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 is by 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; The big section diameter of diameter is greater than the diameter of jack shaft, and the short diameter that diameter is little and right spindle nose section equal diameters treat, 3-4 times of lacking greater than diameter of diameter.
Advantage of the present invention is; 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 structure of the present invention is than identical appearance size solid shaft weight reduction 25%～30%.
Below in conjunction with embodiment's accompanying drawing the present invention is described further:
Description of drawings
Fig. 1 is an embodiment of the invention structural representation.
Among the figure, 1, left spindle nose section; 2, jack shaft; 3, right spindle nose section.
Embodiment
A kind of dual-gripper multistage centrifugal blower hollow spindle comprises left spindle nose section 1, jack shaft 2, and right spindle nose section 3 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; The length that diameter is little is long; 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 the diameter of jack shaft 2, and the short diameter that diameter is little and right spindle nose section 3 equal diameters treat, 3-4 times of lacking greater than diameter of diameter.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.
Advantage of the present invention is; 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 main shaft 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 structure of the present invention is than identical appearance size solid shaft weight reduction 25%～30%.
Claims (5)
1. a dual-gripper multistage centrifugal blower hollow spindle comprises left spindle nose section (1), jack shaft (2), and right spindle nose section (3) 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 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 according to claim 1, it is characterized in that: left spindle nose section (1) is by the coaxial clyinder of two sections different-diameters.
4. a kind of dual-gripper multistage centrifugal blower hollow spindle 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.
5. a kind of dual-gripper multistage centrifugal blower hollow spindle according to claim 4; It is characterized in that: the big section diameter of diameter is greater than the diameter of jack shaft (2); Short diameter that diameter is little and right spindle nose section (3) equal diameters treat that diameter is greater than 3-4 times of the diameter weak point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102944771A CN102352860A (en) | 2011-09-30 | 2011-09-30 | Hollow main shaft for double-support multi-grade centrifugal blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102944771A CN102352860A (en) | 2011-09-30 | 2011-09-30 | Hollow main shaft for double-support multi-grade centrifugal blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102352860A true CN102352860A (en) | 2012-02-15 |
Family
ID=45576489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102944771A Pending CN102352860A (en) | 2011-09-30 | 2011-09-30 | Hollow main shaft for double-support multi-grade centrifugal blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102352860A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020098468A1 (en) * | 2018-11-16 | 2020-05-22 | 珠海格力电器股份有限公司 | Centrifugal compressor rotor and gravity center adjusting method therefor, and centrifugal compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2799925Y (en) * | 2005-06-14 | 2006-07-26 | 南通金通灵风机有限公司 | Hollow shaft of impeller |
| CN201437795U (en) * | 2009-05-07 | 2010-04-14 | 上海贝得尔石化机械设备有限公司 | Hollow output shaft of cooling tower fan |
| CN201747657U (en) * | 2010-08-01 | 2011-02-16 | 湖北省风机厂有限公司 | Hollow main shaft device of centrifugal fan |
| CN201779050U (en) * | 2010-09-14 | 2011-03-30 | 张家港市东丰特种风机有限公司 | Double-shaft sleeving structure of axial flow hot-air circulating fan |
| CN202612186U (en) * | 2011-09-30 | 2012-12-19 | 西安胜唐鼓风机有限公司 | Hollow main shaft structure for double-support multi-grade centrifugal blower |
-
2011
- 2011-09-30 CN CN2011102944771A patent/CN102352860A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2799925Y (en) * | 2005-06-14 | 2006-07-26 | 南通金通灵风机有限公司 | Hollow shaft of impeller |
| CN201437795U (en) * | 2009-05-07 | 2010-04-14 | 上海贝得尔石化机械设备有限公司 | Hollow output shaft of cooling tower fan |
| CN201747657U (en) * | 2010-08-01 | 2011-02-16 | 湖北省风机厂有限公司 | Hollow main shaft device of centrifugal fan |
| CN201779050U (en) * | 2010-09-14 | 2011-03-30 | 张家港市东丰特种风机有限公司 | Double-shaft sleeving structure of axial flow hot-air circulating fan |
| CN202612186U (en) * | 2011-09-30 | 2012-12-19 | 西安胜唐鼓风机有限公司 | Hollow main shaft structure for double-support multi-grade centrifugal blower |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020098468A1 (en) * | 2018-11-16 | 2020-05-22 | 珠海格力电器股份有限公司 | Centrifugal compressor rotor and gravity center adjusting method therefor, and centrifugal compressor |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120215 |