CN108386526A - A kind of speed reducer used for cooling power - Google Patents

Abstract

The present invention relates to a kind of speed reducer used for cooling power, including babinet, pedestal and transmission main shaft, pedestal is in flange plate-like, is to be detachably connected with babinet；Ball bearing is inside loaded onto, and fixed by upper end cover as top chock in the top of pedestal；The bottom of pedestal is fixed as step, built-in lower bearing by bottom end cover；Transmission main shaft is located in by upper ball bearing, lower bearing installation in reduction-gear housing body, and upper/lower terminal is pierced by babinet, and wherein lower end is connected with V belt wheels, and upper end is for connecting axial fan hub.The babinet of the present invention is a single-casting structure with upper and lower axle bearing, upper and lower axle bearing has good concentricity, be conducive to the installation and automatic centering of metal (upper, to ensure retarder main shaft center accuracy, reduce the vibration caused by the bias of main shaft and heel and toe wear, is conducive to the safety and steady operation of retarder.

Description

A kind of speed reducer used for cooling power

Technical field

The present invention relates to a kind of speed reducer used for cooling power, especially a kind of retarder of belt transmission.

Background technology

Cooling tower reducer shell used at present is mostly combined assembly structure, and structure is more complicated, because being mostly Upper-lower casing cooperation installation so that upper and lower axle bearing relative position is relatively difficult to ensure that especially upper and lower axle bearing center is same Axis degree be difficult control, to influence retarder main shaft center accuracy, run retarder under this working condition, Because main shaft center it is inaccurate or even eccentric, it will substantially reduce transmission efficiency, increase running noises, accelerate spindle shaft The abrasion of neck and bearing reduces the service life of retarder.In this case, generally in order to improve pair of step thereon Middle performance, it is necessary to change the accuracy of the cooperation position of assembly by improving the machining accuracy of upper-lower casing, therefore produce Processing technology is complicated, processing request is high, thus can greatly increase processing cost.Meanwhile because it is fabricated structure, When installation and repair, installs and upper and lower axle seating position will be adjusted when adjusting main shaft each time, to just its center Concentricity increases installation and maintenance work difficulty and working time.

In addition, due to a combination thereof formula structure, the sealing between upper-lower casing is also always a long-standing problem Problem, sealing is bad will to cause lubricant grease to outward leakage, gradually reduce lubricant grease amount, outside water can enter lubricating grease room It is interior, seriously affect lubricant effect.Since axial fan hub endoporus and reducer output shaft end matching way are cylinder；In V belt wheels It is cylinder that hole is matched with reducer input shaft end, and difficulty is larger when above-mentioned this matching is installed at the scene, is laid with hammer Axial fan hub is come out with drawing horse traction when going, and repairing maintenance to retarder, workload is very big, institute's band tool It is more, it is above be all current cooling tower retarder there are the drawbacks of.

Invention content

Present invention aims at provide a kind of guarantee safe operation simultaneously energy service life length, installation, cooling easy to maintain Tower retarder.

The present invention includes babinet, pedestal and transmission main shaft, and pedestal is in flange plate-like, is to be detachably connected with babinet；Pedestal Top as top chock, inside load onto ball bearing, and fixed by upper end cover；It is inside loaded as step the bottom of pedestal Bearing, and fixed by bottom end cover；Transmission main shaft is located in by upper ball bearing, the installation of lower combination bearing in reduction-gear housing body, Upper/lower terminal is pierced by babinet, and wherein lower end is connected with V belt wheels, and upper end is for connecting axial fan hub.

In order to improve the ability that lower bearing bears retarder axial load, lower bearing of the invention is by lower ball bearing and thrust Bearing is composed, and the present invention remains to work normally in the case of can ensureing a bearing damage wherein in this way.

In order to reinforce the sealing performance of the present invention, sealed with skeleton rubber oil seal between upper end cover and transmission main shaft, under It is sealed with lower skeleton rubber oil sea between end cap and transmission main shaft；Gasket is further respectively had between end cap and babinet above and below And lower seal pad.

In order to further increase the water resistance of the present invention, it is additionally provided with water retaining cover at the top of upper end cover, water retaining cover suit On transmission main shaft.

For the ease of carrying the present invention, hanging ring is additionally provided on pedestal.

For the ease of being packed into and dismantling V belt wheels and axial fan hub, the both ends of transmission main shaft are designed as truncated cone i.e. Truncated cone-shaped.

In order to ensure the present invention, lubrication is abundant in use, and upper end cover side is equipped with the upper priming cup for oiling, The other side is equipped with the overflow oil nozzle for controlling volume read-out；The side of bottom end cover is equipped with the lower priming cup for oiling, the other side Equipped with the underflow oil nozzle for controlling volume read-out.The effect of upper and lower oil spilling mouth is to confirm whether lubricating oil is added and fills it up with, add Extra lubricating oil can be overflowed from upper and lower oil spilling mouth after full.

The invention has the advantages that：

1, babinet of the present invention and upper and lower axle bearing are a single-casting structure, the relative position of upper and lower axle bearing and the essence of size Degree can be controlled by being machined, and can ensure that it is coaxial well that upper and lower axle bearing has by the precision of mechanical processing in this way Degree, be conducive to the installation and automatic centering of metal (upper, to ensure retarder main shaft center accuracy, reduce Vibration caused by the bias of main shaft and heel and toe wear are conducive to safety and steady operation and the operation service life of retarder Extend.

2, it is then that a hollow entirety is in waist drum shape that pedestal of the invention, which uses the flange plate type structure of interior sky, babinet, Tubulose steelframe had not only ensured that entire retarder had enough strength and stiffness in this way, but also the dosage of reduction material reduces its weight And production cost, practical performance are good.

3, simple in structure, it is convenient for installation and maintenance, in installation and when safeguarding, only metal (upper need to be respectively pressed into bearing block i.e. Can, it can automatically ensure the central coaxial degree of two bearings without separately adjusting again.

4, after upper bearing (metal) and lower bearing are pressed into bearing block, retarder radial pressure is born jointly；Since lower bearing is by lower ball Bearing and thrust bearing combine, and the present invention remains to normal work in the case of can ensureing a bearing damage wherein in this way Make, increases operational reliability and the safety of retarder.

Description of the drawings

Fig. 1 is the schematic diagram of the structure of the present invention.

The structural schematic diagram of Fig. 2 upper end covers.

Fig. 3 is the structural schematic diagram of bottom end cover.

What arrow indicated in Fig. 2 and Fig. 3 is the flow direction of lubrication flow when adding lubricating oil.

Specific implementation mode

As shown in Figure 1, speed reducer used for cooling power of the present invention includes babinet 32, pedestal 24 and transmission main shaft 26.Bottom Seat 24 is in flange plate-like, which is provided with the hanging ring 17 for facilitating carrying, and pass through hex bolts 9, hex nut 12 and babinet 32 formation are detachably connected, and plain washer is equipped with wherein between hex bolts and babinet 32, between hex nut 12 and pedestal 24 10 and spring washer 12.

Ball bearing 8 is inside loaded onto in the top of pedestal 24 as top chock, the upper end for being positioned to upper ball bearing 8 Lid 28 is fixed on the top of babinet 32 by hex bolts 5, be additionally provided between hex bolts 5 and upper end cover 28 spring washer 6 and Plain washer 7.The top of aforementioned upper end cover 28 is additionally provided with water retaining cover 29, which is sleeved on transmission main shaft 26.Pedestal 24 Bottom as step, built-in lower bearing 13, the bottom end cover 23 for being positioned to lower bearing 13 passes through hex bolts 14 are fixed on the bottom end of babinet 32.Spring washer 15 and plain washer 16 are gone back between hex bolts 14 and babinet 32.Aforementioned lower bearing 13 be a combination bearing, is composed of lower ball bearing 13-1 and thrust bearing 13-2.

Transmission main shaft 26 is located in by upper ball bearing 8, the installation of lower bearing 13 in reduction case 32, upper/lower terminal It is pierced by babinet 32.The lower end of transmission main shaft 26 is connected by hex bolts 18, V belt wheels pressing plate 21 with V belt wheels 22, hex bolts 18 It is equipped with spring washer 19 and plain washer 20 between V belt wheels pressing plate 21, O-ring is equipped between V belt wheels pressing plate 21 and axial fan hub 17.The upper end of transmission active 26 is used to connect axial fan hub 30 when specifically used as the power intake of the present invention, and leads to It crosses wind turbine pressing plate 31, hex bolts 1 and axial fan hub 30 to fix, be additionally provided between above-mentioned wind turbine pressing plate 31 and axial fan hub 30 flat Washer 2 and O-ring 3.

Sealed with skeleton rubber oil seal 4 between upper end cover 28 and transmission main shaft 26, bottom end cover 23 and transmission main shaft 26 it Between with lower skeleton rubber oil sea 33 seal；Be respectively equipped between upper end cover 28, bottom end cover 23 and babinet 32 gasket 27 and under Gasket 34.

As shown in Fig. 2, 28 side of upper end cover is equipped with the upper priming cup 28-1 for adding lubricating oil, the other side is equipped with for controlling The overflow oil nozzle 28-2 of volume read-out processed.

As shown in figure 3, the side of bottom end cover 23 is equipped with the lower priming cup 23-1 for adding lubricating oil, the other side is equipped with and is used for Control the underflow oil nozzle 23-2 of volume read-out.

The present invention upper ball bearing 8 and lower ball bearing 13-1 be with unilateral ring structure, they respectively with upper end cover 28, the lubricating grease room of upper skeleton rubber oil sea 4 and bottom end cover 23, the composition sealing of lower skeleton rubber oil sea 33, and pass through upper note Lubricating cup 28-1 and lower priming cup 23-1 adds lubricating oil, to ensure upper ball bearing 8 and by lower ball bearing 13-1 and thrust The lubrication of the lower bearing 13 of bearing 13-2 compositions is abundant.

Claims (7)

1. a kind of speed reducer used for cooling power, it is characterised in that including babinet（32）, pedestal（24）And transmission main shaft（26）, pedestal （24）In flange plate-like, with babinet（32）To be detachably connected；Pedestal（24）Top as top chock, inside load onto ball bearing （8）, and by upper end cover（28）It is fixed；Pedestal（24）Bottom as step, built-in lower bearing（13）, and by bottom end cover （23）It is fixed；Transmission main shaft（26）Pass through upper ball bearing（8）, lower bearing（13）Installation is located in reduction case（32）It is interior, Upper/lower terminal is pierced by babinet（32）, wherein lower end and V belt wheels（22）It is connected, upper end is for connecting axial fan hub（30）.

2. speed reducer used for cooling power as described in claim 1, it is characterised in that the lower bearing（13）It is a combination bearing, By lower ball bearing（13-1）And thrust bearing（13-2）It is composed.

3. speed reducer used for cooling power as claimed in claim 1 or 2, it is characterised in that upper end cover（28）With transmission main shaft（26）It Between with skeleton rubber oil seal（4）Sealing, bottom end cover（23）With transmission main shaft（28）Between use lower skeleton rubber oil sea（33）It is close Envelope；Upper end cover（28）, bottom end cover（23）With babinet（32）Between be respectively equipped with gasket（27）And lower seal pad（34）.

4. speed reducer used for cooling power as claimed in claim 1 or 2, it is characterised in that upper end cover（28）Top be additionally provided with water blocking Cover（29）, the water retaining cover（29）It is sleeved on transmission main shaft（26）On.

5. speed reducer used for cooling power as claimed in claim 1 or 2, it is characterised in that pedestal（24）It is equipped with and is carried for facilitating Hanging ring（17）.

6. speed reducer used for cooling power as claimed in claim 1 or 2, it is characterised in that upper end cover（28）Side is equipped with for refueling Upper priming cup（28-1）, the other side is equipped with overflow oil nozzle（28-2）；Bottom end cover（23）Side be equipped with for oiling bet Lubricating cup（23-1）, the other side is equipped with underflow oil nozzle（23-2）.

7. speed reducer used for cooling power as claimed in claim 1 or 2, it is characterised in that the transmission main shaft（26）Both ends in circle Platform shape.