CN202659854U - Speed reducer for cooling tower - Google Patents
Speed reducer for cooling tower Download PDFInfo
- Publication number
- CN202659854U CN202659854U CN 201220111161 CN201220111161U CN202659854U CN 202659854 U CN202659854 U CN 202659854U CN 201220111161 CN201220111161 CN 201220111161 CN 201220111161 U CN201220111161 U CN 201220111161U CN 202659854 U CN202659854 U CN 202659854U
- Authority
- CN
- China
- Prior art keywords
- casing
- main shaft
- bearing
- speed reducer
- box body
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a speed reducer for a cooling tower, which ensures safety operation, and is long in service life and convenient for installation and maintenance. The speed reducer comprises a box body and a main shaft, wherein the main shaft penetrates through the box body, the upper end and the lower end of the main shaft are rotatably arranged on the box body through bearings, shaft necks on the upper end and the lower end of the main shaft, extending out of the box body, are respectively connected with a belt wheel and a fan hub, the box body is a hollow cone body, and a flange is fixed on the large end part of the cone body of the box body.
Description
Technical field
The utility model relates to a kind of speed reducer used for cooling power, particularly a kind of retarder of belt transmission.
Background technique
The cooling tower reducer shell that uses at present mostly is combined assembly structure, its complicated structure, cooperate installation because mostly be upper-lower casing, so that metal (upper seat relative position relatively is difficult to guarantee, particularly the coaxality at metal (upper seat center is difficult to control, thereby affect the accuracy of the central position of retarder main shaft, under this working condition, move retarder, inaccuracy even off-centre because of the central position of main shaft, the wearing and tearing that will greatly reduce transmission efficiency, strengthen running noises, quickening main shaft axle journal and bearing, the service life of reduction retarder.In this case, general in order to improve the centring property of its metal (upper seat, must change by the machining accuracy that improves upper-lower casing the validity of the cooperation position of assembly, so production and processing technology is complicated, processing request is high, will increase greatly processing cost like this.Simultaneously, because it is fabricated structure, installing and during maintenance, all will put the metal (upper seat during install and adjust main shaft each time and adjust, aligning the coaxality at its center, increasing installation and maintenance work difficulty and operating time.
In addition, because axial fan hub endoporus and reducer output shaft end matching way are cylindrical body; V belt wheel endoporus and reducer input shaft end coupling are cylindrical body, difficulty was larger when above-mentioned this coupling was installed at the scene, to lay with hammer, and will be axial fan hub with La Mala out will maintain retarder the time, workload is very large, institute's band instrument is also many, more than all be the drawback that present cooling tower retarder exists.
The model utility content
The utility model purpose be to provide a kind of guarantee safe operation and can long service life, installation, speed reducer used for cooling power easy to maintenance.
Speed reducer used for cooling power of the present utility model, it comprises casing, main shaft, and main shaft passes casing, and main shaft up and down two ends is arranged on the casing by the bearing rotation; The main shaft that the stretches out casing up and down axle journal at two ends links to each other with axial fan hub with belt pulley respectively; Casing is a hollow cone, is fixed with flange plate in the large end of cone of casing.
Above-mentioned speed reducer used for cooling power, an end of main shaft rotate by upper ball bearing and are arranged on the casing, and the other end rotates by lower ball bearing and thrust-bearing and is arranged on the casing, and the outer ring of lower ball bearing is fixed on the casing; One end of thrust-bearing contacts with the inner ring of lower ball bearing, and the other end contacts with lower ball cover on being fixed on casing.Model utility has been improved them and has been born the ability of retarder thrust load by the combination of lower ball bearing and thrust-bearing, can guarantee that the utility model still can work in the situation of a damage of bearings therein.
For the ease of packing into and dismantling V belt wheel and axial fan hub, the axle journal at the two ends of main shaft is designed to taper type.
The utlity model has following advantage:
1, the utility model casing is equivalent to support the metal (upper seat of bearings at both ends (metal (upper), the relative position of metal (upper seat and the precision of size can be controlled by machining, can guarantee by the precision of machining that like this metal (upper seat has good coaxality, be conducive to installation and the automatic centering of metal (upper, thereby guarantee the accuracy of the central position of retarder main shaft, reduced vibration and heel and toe wear that the off-centre because of main shaft causes, the safety and steady operation and the operation that are conducive to retarder prolong working life.
2, this speed reducer used for cooling power because the casing that is fixed on taper of flange plate on, casing axially can be very little, so this reducer structure is small and exquisite, the space of installation only needs very little, and is easy for installation.
3, simple in structure, convenient for installation and maintenance, when installation and maintenance, only need that metal (upper is pressed into respectively bearing support and get final product, need not adjust separately again the center coaxality that just can automatically guarantee two bearings.
4, after upper bearing (metal) and lower bearing are pressed into bearing support, jointly bear the retarder radial pressure; Because lower bearing is formed by the combination of lower ball bearing and thrust-bearing, can guarantee that like this utility model still can work in the situation of a damage of bearings therein, increased operational reliability and the Security of retarder.
Description of drawings
Fig. 1 is schematic representation of the present utility model.
Embodiment
As shown in Figure 1, this speed reducer used for cooling power, it comprises casing 1, main shaft 2, and main shaft passes casing, and the main shaft two ends are rotated by metal (upper and are arranged on the casing.Axle journal 21, lower axle journal 22 stretch out respectively casing on the main shaft, and upper axle journal 21, lower axle journal 22 all become taper type, pass through taper fit with belt pulley 3 and axial fan hub 4.Casing is a hollow cone, is fixed with flange plate 5 in the large end of cone of casing.
The upper end of main shaft is rotated by upper ball bearing 6 and is arranged on the casing, and upper ball bearing 6 is by being fixed on upper ball cover 9 location on the casing.The lower end of main shaft is rotated by lower ball bearing 7 and thrust-bearing 8 and is arranged on the casing, and the outer ring of lower ball bearing 7 is fixed on the casing; One end of thrust-bearing contacts with the inner ring of lower ball bearing, and the other end contacts with lower ball cover 10 on being fixed on casing.
Be used for the upper ball cover 9 that upper ball bearing 6 positions is fixed on by hex head bolt the top of casing.The top of upper ball cover 9 also is provided with water retaining cover 11, on these water retaining cover 11 fixed main shafts.The lower ball cover 10 that lower bearing (comprising lower ball bearing and thrust-bearing) is positioned is fixed on the bottom of casing by hex head bolt.
The upper end of main shaft links to each other with belt pulley 3 by hex head bolt, belt pulley pressing plate 12.The lower end of main shaft is by blower fan pressing plate 13, hex head bolt connecting fan wheel hub 4.
Use the skeleton rubber oil seal sealing between upper ball cover and the main shaft, seal with the lower skeleton rubber oil sea between lower ball cover and the main shaft.
Claims (3)
1. speed reducer used for cooling power, it comprises casing, main shaft, and main shaft passes casing, and main shaft up and down two ends rotates by bearing and is arranged on the casing; The main shaft that the stretches out casing up and down axle journal at two ends links to each other with axial fan hub with belt pulley respectively; It is characterized in that: casing is a hollow cone, is fixed with flange plate in the large end of cone of casing.
2. speed reducer used for cooling power as claimed in claim 1 is characterized in that: an end of main shaft rotates by upper ball bearing and is arranged on the casing, and the other end rotates by lower ball bearing and thrust-bearing and is arranged on the casing, and the outer ring of lower ball bearing is fixed on the casing; One end of thrust-bearing contacts with the inner ring of lower ball bearing, and the other end contacts with lower ball cover on being fixed on casing.
3. speed reducer used for cooling power as claimed in claim 1, it is characterized in that: the main shaft two ends become taper type with the axle journal that belt pulley links to each other with axial fan hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220111161 CN202659854U (en) | 2012-03-22 | 2012-03-22 | Speed reducer for cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220111161 CN202659854U (en) | 2012-03-22 | 2012-03-22 | Speed reducer for cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202659854U true CN202659854U (en) | 2013-01-09 |
Family
ID=47454763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220111161 Expired - Fee Related CN202659854U (en) | 2012-03-22 | 2012-03-22 | Speed reducer for cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202659854U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949976A (en) * | 2014-05-19 | 2014-07-30 | 无锡市飞象精密机床制造有限公司 | Grinding wheel trimmer for spherical roller grinding machine |
-
2012
- 2012-03-22 CN CN 201220111161 patent/CN202659854U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949976A (en) * | 2014-05-19 | 2014-07-30 | 无锡市飞象精密机床制造有限公司 | Grinding wheel trimmer for spherical roller grinding machine |
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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 |
Granted publication date: 20130109 Termination date: 20170322 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |