CN204985629U - Cavity formula cooling tower reducing gear box transmission - Google Patents
Cavity formula cooling tower reducing gear box transmission Download PDFInfo
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- CN204985629U CN204985629U CN201520635809.1U CN201520635809U CN204985629U CN 204985629 U CN204985629 U CN 204985629U CN 201520635809 U CN201520635809 U CN 201520635809U CN 204985629 U CN204985629 U CN 204985629U
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- main shaft
- shaft bearing
- bearing
- cooling tower
- blower fan
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Abstract
The utility model discloses a cavity formula cooling tower reducing gear box transmission, including the gear box, install vertical layout's fan mainshaft in the gear box, fan mainshaft's lower extreme extends to the outside of gear box, and fan mainshaft's upper portion and lower part are overlapped respectively and are equipped with a main shaft bearing and the 2nd main shaft bearing, and part that last mounting hole that a main shaft bearing and the 2nd main shaft bearing lie in the gear box respectively and mounting hole down, fan mainshaft extended to the gear box outside is overlapped and is equipped with gland under the bearing, fan mainshaft's lower part is still overlapped and is equipped with the 3rd main shaft bearing, and between the gland, fan mainshaft's lower part was still overlapped to be equipped with to press from both sides and is located the bearing spacer ring between the 3rd main shaft bearing and the 2nd main shaft bearing under the 3rd main shaft bearing lay in the lower mounting hole of gear box and lies in the 2nd main shaft bearing and bearing. The utility model discloses a cavity formula cooling tower reducing gear box transmission simple structure, it is convenient to maintain, can guarantee the normal operating of cooling tower safety.
Description
Technical field
The utility model relates to a kind of transmission device, particularly relates 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.
Model utility content
The purpose of this utility model is to provide a kind of hollow type reducer casing for cooling tower transmission device, and structure is simple, easy to maintenance, can ensure that cooling tower safety is normal and run.
For achieving the above object, the utility model 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 further improvement of the utility model, the thickness of described bearing spacer is 1mm.
Further improve as of the present utility model, the thickness summation of described 3rd main shaft bearing and bearing spacer is 17mm.
Further improve as of the present utility model, 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 utility model, the center of described bearing lower cover is provided with center hole, center hole is corresponding with lower mounting hole, 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 utility model, two described back-to-back installations of outside framework oil seal reverse side.
Further improve as of the present utility model, 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 utility model, 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 utility model 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 utility model will become more clear, and these accompanying drawings are for explaining embodiment of the present utility model.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the hollow type reducer casing for cooling tower transmission device in the utility model.
Embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, 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, the utility model is described, but the utility model is not limited to the embodiment of above announcement, and should contain various carry out according to essence of the present utility model 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. the hollow type reducer casing for cooling tower transmission device as described in claim 5 or 6, 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 |
|---|---|---|---|
| CN201520635809.1U CN204985629U (en) | 2015-08-21 | 2015-08-21 | Cavity formula cooling tower reducing gear box transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520635809.1U CN204985629U (en) | 2015-08-21 | 2015-08-21 | Cavity formula cooling tower reducing gear box transmission |
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| Publication Number | Publication Date |
|---|---|
| CN204985629U true CN204985629U (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520635809.1U Active CN204985629U (en) | 2015-08-21 | 2015-08-21 | Cavity formula cooling tower reducing gear box transmission |
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| CN (1) | CN204985629U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156639A (en) * | 2015-08-21 | 2015-12-16 | 燕京啤酒(玉林)有限公司 | Transmission device of reduction gearbox of hollow cooling tower |
-
2015
- 2015-08-21 CN CN201520635809.1U patent/CN204985629U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156639A (en) * | 2015-08-21 | 2015-12-16 | 燕京啤酒(玉林)有限公司 | Transmission device of reduction gearbox of hollow cooling tower |
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