CN105156639A - Transmission device of reduction gearbox of hollow cooling tower - Google Patents
Transmission device of reduction gearbox of hollow cooling tower Download PDFInfo
- Publication number
- CN105156639A CN105156639A CN201510518046.7A CN201510518046A CN105156639A CN 105156639 A CN105156639 A CN 105156639A CN 201510518046 A CN201510518046 A CN 201510518046A CN 105156639 A CN105156639 A CN 105156639A
- Authority
- CN
- China
- Prior art keywords
- main shaft
- bearing
- shaft bearing
- cooling tower
- blower fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02078—Gearboxes for particular applications for wind turbines
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a transmission device of a reduction gearbox of a hollow cooling tower. The transmission device comprises a gearbox. A vertically-arranged draught fan main shaft is installed in the gearbox. The lower end of the draught fan main shaft extends out of the gearbox. The upper portion and the lower portion of the draught fan main shaft are sleeved with a first main shaft bearing and a second main shaft bearing respectively. The first main shaft bearing and the second main shaft bearing are located in an upper installation hole and a lower installation hole of the gearbox respectively. The portion, extending out of the gearbox, of the draught fan main shaft is sleeved with a lower bearing gland. The lower portion of the draught fan main shaft is further sleeved with a third main shaft bearing. The third main shaft bearing is located in the lower installation hole of the gearbox and located between the second main shaft bearing and the lower bearing gland. The lower portion of the draught fan main shaft is further sleeved with a bearing space ring clamped between the third main shaft bearing and the second main shaft bearing. The transmission device of the reduction gearbox of the hollow cooling tower is simple in structure, convenient to maintain and capable of guaranteeing safe and normal running of the cooling tower.
Description
Technical field
The present invention relates to a kind of transmission device, particularly relate to a kind of hollow type reducer casing for cooling tower transmission device.
Background technique
At present, the hollow type that China uses is used for cooling tower contact in water and air are flowed after carry out cold and hot exchange and produce steam, steam volatile zone is walked heat and is reached waste heat that the principles such as evaporative heat loss, heat transfer by convection and radiative heat transfer produce in leave industrial or refrigeration air-conditioner to reduce the evaporating radiator of water temperature, to ensure the normal operation of system.
In actual use, because applying working condition environment is relatively more severe, because of the driving component design deficiency of dispatching from the factory in configuration speed reducer, wherein design the problem that the main shaft bearing radial internal clearance of use is large, cause blower fan spiral to be shaken, blower fan helical blade and rotary drum joint shake and split and fracture accident; And the frequent Leakage of main shaft bearing lower cover bottom the speed reducer of genuine, the safety affecting cooling tower is normal to be run, and increases plant maintenance workload and maintenance cost.
Summary of the invention
The object of this invention is to provide a kind of hollow type reducer casing for cooling tower transmission device, structure is simple, easy to maintenance, can ensure that cooling tower safety is normal and run.
For achieving the above object, the invention provides a kind of hollow type reducer casing for cooling tower transmission device, comprise gear-box, the vertical blower fan main shaft arranged is installed in gear-box, the lower end of blower fan main shaft extends to the outside of gear-box, the upper and lower of blower fan main shaft is respectively installed with the first main shaft bearing and the second main shaft bearing, in the upper mounting hole that first main shaft bearing and the second main shaft bearing lay respectively at gear-box and lower mounting hole, the part that blower fan main shaft extends to gear-box outside is set with bearing lower cover, the bottom of described blower fan main shaft is also set with the 3rd main shaft bearing, 3rd main shaft bearing is in the lower mounting hole of gear-box and between the second main shaft bearing and bearing lower cover, the bottom of blower fan main shaft is also set with the bearing spacer be located between the 3rd main shaft bearing and the second main shaft bearing.
As a further improvement on the present invention, the thickness of described bearing spacer is 1mm.
Further improve as of the present invention, the thickness summation of described 3rd main shaft bearing and bearing spacer is 17mm.
Further improve as of the present invention, described first main shaft bearing, the second main shaft bearing and the 3rd main shaft bearing all adopt the main shaft bearing that radial internal clearance is little.
Further improve as of the present invention, the center of described bearing lower cover is provided with center hole, and center hole is corresponding with lower mounting hole, and the bottom of blower fan main shaft is run through and is arranged on central hole, the bottom of blower fan main shaft is also set with and fill two outside framework oil seals, and two outside framework oil seals are positioned at center hole.
Further improve as of the present invention, two described back-to-back installations of outside framework oil seal reverse side.
Further improve as of the present invention, the upper surface of described bearing lower cover protrudes the convex platform being formed and stretch in the lower mounting hole of gear-box, the lower surface of convex platform and contact the 3rd main shaft bearing, the lower surface of bearing lower cover protrudes and forms lower convex platform, and center hole runs through this lower convex platform.
Further improve as of the present invention, the internal diameter of described lower convex platform is less than the internal diameter of convex platform, and the external diameter of lower convex platform is less than the internal diameter of convex platform.
Compared with prior art, the beneficial effect of hollow type reducer casing for cooling tower transmission device of the present invention is as follows:
(1) structure is simple, easy to maintenance.
(2) the 3rd main shaft bearing and bearing spacer is adopted, can effectively prevent blower fan because of the larger blower fan spiral shake of bearing end-play, cause blower fan helical blade and rotary drum joint to shake to split and fracture accident, ensure that fan safe is normally run, thus ensure the normal operation of cooling tower safety.
(3) the thickness summation of described 3rd main shaft bearing and bearing spacer is 17mm, thus can be used for reinforcing support blower fan transmission radial-play trip distance, prevents blower fan rotary drum from shaking the decomposite leaf sheet that shakes.
(4) first main shaft bearings, the second main shaft bearing and the 3rd main shaft bearing all adopt the main shaft bearing that radial internal clearance is little, thus can effectively prevent blower fan spiral from shaking and causing blower fan helical blade and rotary drum joint to shake splitting and fracture accident, ensure that fan safe is normally run, thus ensure the normal operation of cooling tower safety.
(5) adopt the outside framework oil seal of two back-to-back installations of reverse side, thus the frequent Leakage of bearing lower cover can be solved, alleviate plant maintenance workload, ensure cooling tower safe operation.
(6) lower surface of convex platform contact the 3rd main shaft bearing, thus can effectively prevent blower fan spiral from shaking and causing blower fan helical blade and rotary drum joint to shake splitting and fracture accident further, ensure that fan safe is normally run, thus ensure the normal operation of cooling tower safety.
By following description also by reference to the accompanying drawings, the present invention will become more clear, and these accompanying drawings are for explaining embodiments of the invention.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the hollow type reducer casing for cooling tower transmission device in the present invention.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, element numbers similar in accompanying drawing represents similar element.
Please refer to Fig. 1, described hollow type reducer casing for cooling tower transmission device comprises gear-box, the vertical blower fan main shaft 1 arranged is installed in gear-box, the lower end of blower fan main shaft 1 extends to the outside of gear-box, the upper and lower of blower fan main shaft 1 is respectively installed with the first main shaft bearing 2 and the second main shaft bearing 3, in the upper mounting hole that first main shaft bearing 2 and the second main shaft bearing 3 lay respectively at gear-box and lower mounting hole, the part that blower fan main shaft 1 extends to gear-box outside is set with bearing lower cover 4, the bottom of described blower fan main shaft 1 is also set with the 3rd main shaft bearing 5, 3rd main shaft bearing 5 is in the lower mounting hole of gear-box and between the second main shaft bearing 3 and bearing lower cover 4, the bottom of blower fan main shaft 1 is also set with the bearing spacer 6 be located between the 3rd main shaft bearing 5 and the second main shaft bearing 3, the thickness of described bearing spacer 6 is 1mm, for isolating the bearing inner race spacing of the 3rd main shaft bearing 5 and the second main shaft bearing 3.The thickness summation of described 3rd main shaft bearing 5 and bearing spacer 6 is 17mm, thus can be used for reinforcing support blower fan transmission radial-play trip distance, prevents blower fan rotary drum from shaking the decomposite leaf sheet that shakes.
Described first main shaft bearing 2, second main shaft bearing 3 and the 3rd main shaft bearing 5 all adopt the main shaft bearing that radial internal clearance is little, thus can effectively prevent blower fan spiral from shaking and causing blower fan helical blade and rotary drum joint to shake splitting and fracture accident, guarantee fan safe is normally run.
The center of described bearing lower cover 4 is provided with center hole, and center hole is corresponding with lower mounting hole, and the bottom of blower fan main shaft 1 is run through and is arranged on central hole, and the bottom of blower fan main shaft 1 is also set with and fill two outside framework oil seals 7, two outside framework oil seals 7 are positioned at center hole.The described back-to-back installation of two outside framework oil seal 7 reverse side, thus the frequent Leakage of bearing lower cover 4 can be solved, alleviate plant maintenance workload, ensure equipment safety operation.
The upper surface of described bearing lower cover 4 protrudes the convex platform being formed and stretch in the lower mounting hole of gear-box, the lower surface of convex platform contact the 3rd main shaft bearing 5, thus can effectively prevent blower fan spiral from shaking and causing blower fan helical blade and rotary drum joint to shake splitting and fracture accident further, guarantee fan safe is normally run.The lower surface of bearing lower cover 4 protrudes and forms lower convex platform, and center hole runs through this lower convex platform.The external diameter of described lower convex platform is less than the internal diameter of convex platform.
More than in conjunction with most preferred embodiment, invention has been described, but the present invention is not limited to the embodiment of above announcement, and should contain various carry out according to essence of the present invention amendment, equivalent combinations.
Claims (8)
1. a hollow type reducer casing for cooling tower transmission device, comprise gear-box, the vertical blower fan main shaft (1) arranged is installed in gear-box, the lower end of blower fan main shaft (1) extends to the outside of gear-box, the upper and lower of blower fan main shaft (1) is respectively installed with the first main shaft bearing (2) and the second main shaft bearing (3), in the upper mounting hole that first main shaft bearing (2) and the second main shaft bearing (3) lay respectively at gear-box and lower mounting hole, the part that blower fan main shaft (1) extends to gear-box outside is set with bearing lower cover (4), it is characterized in that: the bottom of described blower fan main shaft (1) is also set with the 3rd main shaft bearing (5), 3rd main shaft bearing (5) is positioned at the lower mounting hole of gear-box and is positioned between the second main shaft bearing (3) and bearing lower cover (4), the bottom of blower fan main shaft (1) is also set with the bearing spacer (6) be located between the 3rd main shaft bearing (5) and the second main shaft bearing (3).
2. hollow type reducer casing for cooling tower transmission device as claimed in claim 1, is characterized in that: the thickness of described bearing spacer (6) is 1mm.
3. hollow type reducer casing for cooling tower transmission device as claimed in claim 1 or 2, is characterized in that: the thickness summation of described 3rd main shaft bearing (5) and bearing spacer (6) is 17mm.
4. hollow type reducer casing for cooling tower transmission device as claimed in claim 1 or 2, is characterized in that: described first main shaft bearing (2), the second main shaft bearing (3) and the 3rd main shaft bearing (5) all adopt the main shaft bearing that radial internal clearance is little.
5. hollow type reducer casing for cooling tower transmission device as claimed in claim 4, it is characterized in that: the center of described bearing lower cover (4) is provided with center hole, center hole is corresponding with lower mounting hole, the bottom of blower fan main shaft (1) is run through and is arranged on central hole, the bottom of blower fan main shaft (1) is also set with and fill two outside framework oil seals (7), and two outside framework oil seals (7) are positioned at center hole.
6. hollow type reducer casing for cooling tower transmission device as claimed in claim 5, is characterized in that: the described back-to-back installation of two outside framework oil seal (7) reverse side.
7. 5 or 6 hollow type reducer casing for cooling tower transmission devices as claimed in claim, it is characterized in that: the upper surface of described bearing lower cover (4) protrudes the convex platform being formed and stretch in the lower mounting hole of gear-box, the lower surface of convex platform contact the 3rd main shaft bearing (5), the lower surface of bearing lower cover (4) protrudes and forms lower convex platform, and center hole runs through this lower convex platform.
8. hollow type reducer casing for cooling tower transmission device as claimed in claim 7, is characterized in that: the external diameter of described lower convex platform is less than the internal diameter of convex platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510518046.7A CN105156639A (en) | 2015-08-21 | 2015-08-21 | Transmission device of reduction gearbox of hollow cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510518046.7A CN105156639A (en) | 2015-08-21 | 2015-08-21 | Transmission device of reduction gearbox of hollow cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105156639A true CN105156639A (en) | 2015-12-16 |
Family
ID=54797611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510518046.7A Pending CN105156639A (en) | 2015-08-21 | 2015-08-21 | Transmission device of reduction gearbox of hollow cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105156639A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2495854Y (en) * | 2001-02-23 | 2002-06-19 | 伍健国 | Speed reducer used for cooling power |
| CN2646481Y (en) * | 2003-09-28 | 2004-10-06 | 广州马利新菱冷却塔有限公司 | Reducer casing for cooling tower |
| JP2011021755A (en) * | 2010-10-14 | 2011-02-03 | Sumitomo Heavy Ind Ltd | Reduction gear |
| CN103075469A (en) * | 2012-10-09 | 2013-05-01 | 吴小杰 | Grease lubrication dynamic balance reduction gear of rocket launching pad bearing |
| CN103883678A (en) * | 2014-04-03 | 2014-06-25 | 重庆市璧山爱华有限责任公司 | Speed reducer special for cooling tower and air cooler |
| CN204985629U (en) * | 2015-08-21 | 2016-01-20 | 燕京啤酒(玉林)有限公司 | Cavity formula cooling tower reducing gear box transmission |
-
2015
- 2015-08-21 CN CN201510518046.7A patent/CN105156639A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2495854Y (en) * | 2001-02-23 | 2002-06-19 | 伍健国 | Speed reducer used for cooling power |
| CN2646481Y (en) * | 2003-09-28 | 2004-10-06 | 广州马利新菱冷却塔有限公司 | Reducer casing for cooling tower |
| JP2011021755A (en) * | 2010-10-14 | 2011-02-03 | Sumitomo Heavy Ind Ltd | Reduction gear |
| CN103075469A (en) * | 2012-10-09 | 2013-05-01 | 吴小杰 | Grease lubrication dynamic balance reduction gear of rocket launching pad bearing |
| CN103883678A (en) * | 2014-04-03 | 2014-06-25 | 重庆市璧山爱华有限责任公司 | Speed reducer special for cooling tower and air cooler |
| CN204985629U (en) * | 2015-08-21 | 2016-01-20 | 燕京啤酒(玉林)有限公司 | Cavity formula cooling tower reducing gear box transmission |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151216 |