CN201190782Y

CN201190782Y - Single stage gear reducer

Info

Publication number: CN201190782Y
Application number: CNU2008200337759U
Authority: CN
Inventors: 冯闯; 何健; 吴建中; 桑超峰; 胡笏; 蔡丹萍
Original assignee: NANJING GAOTE GEAR BOX MANUFACTURING Co Ltd
Current assignee: NANJING GAOTE GEAR BOX MANUFACTURING Co Ltd
Priority date: 2008-04-03
Filing date: 2008-04-03
Publication date: 2009-02-04
Anticipated expiration: 2018-04-03

Abstract

The utility model relates to a single-stage gear speed reducer, belonging to the mechanical transmission unit technical field, which comprises a box body supporting two parallel rotation shafts via a rolling bearing, wherein the rotation shaft comprises an input gear shaft and an output shaft, and the output shaft is fixed on the large gear. The single-stage gear speed reducer is characterized in that the box body adopts a wave curvature structure, the upper box body is provided with oil collection grooves communicated with each other and an oil collector communicated with the oil collection grooves. The single-stage gear speed reducer can effectively improve the rigidity of the box body, improve heat dissipation ability and confirm reliable lubrication for the bearing.

Description

The single gear retarder

Technical field

The utility model relates to a kind of gear reducer, and especially a kind of single gear retarder belongs to the mechanical transmission technical field.

Background technique

The single gear retarder is widely used in many industrial departments such as metallurgy, mine, weaving, pump industry, papermaking, power plant, environmental protection.Its basic structure is to pass through parallel input shaft and the output shaft of bearings on the casing, and input shaft and small gear are integral structure (claiming the input gear shaft), fix on the output shaft and the gearwheel of importing the gear shaft engagement.

Understand according to the claimant, with regard to structure, there is following major defect in existing single reduction gear:

1, the inside and outside bilge construction design of casing is simpler, and the bearing lubrication design is unreasonable, the heat dissipation potential deficiency.

2, shafting components generally has the eccentric bushing structure, and manufacturing is had relatively high expectations, and has increased product cost, and practicability is relatively poor.

3, seal form is simpler, and the leakage of oil problem is more general, and sealing configuration haves much room for improvement.

The model utility content

Primary and foremost purpose of the present utility model is: the shortcoming at above prior art exists, and propose the single gear retarder of a kind of housing structure, thereby make the lubricated more fully reliable of bearing through optimal design, the casing heat dissipation potential obviously improves.

The further purpose of the utility model is: propose a kind of eccentric bushing of cancelling the manufacturing process complexity, can simplify manufacturing, assembly technology, and can effectively avoid the single gear retarder of leakage of oil.

In order to reach above primary and foremost purpose, single gear retarder of the present utility model comprises casing, pass through two parallel rotating shafts of roller bearings on the described casing, described rotating shaft comprises input gear shaft and output shaft, the fixing gearwheel that meshes with gear shaft on the described output shaft, its improvements are: described casing appearance adopts the corrugated curved-surface structure, is made of upper and lower casing, be provided with the oil-containing groove that is interconnected in the described upper box, and the oil trap that is communicated with oil-containing groove is installed.

Like this, effectively strengthened the rigidity of casing on the one hand, improved heat dissipation potential simultaneously, and it is lubricated fully reliably to have guaranteed that bearing can access.

In order to reach further purpose, the rolling bearing of supporting revolving shaft is installed by bearing support on the single gear reduction case of the present utility model, the outer end of described bearing support is the cover plate of inner hole sleeve outside rotating shaft fixedly, the position that described rotating shaft is arranged in the cover plate endoporus is fixed with axle sleeve, between the endoporus of described axle sleeve and cover plate outside framework oil seal is housed, between the inner ring distance ring of described axle sleeve and rolling bearing the oil seal ring that is fixed in the rotating shaft is housed also, the cylindrical of described oil seal ring becomes movingly with the endoporus of described cover plate, the oil sealing rib extends outwardly out in the middle part of the cylindrical of described oil seal ring, be fixed with oil deflector between the outer ring positioning ring of described cover plate and rolling bearing, oil baffle is extended at the middle part of described oil deflector endoporus inwardly, and the endoporus of described oil baffle becomes movingly with oil seal ring.

Compared with prior art, said structure of the present utility model has desirable sealing effect, can effectively avoid leakage of oil and long service life.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is an embodiment's of the utility model a structural representation.

Fig. 2 is the A-A sectional drawing of Fig. 1.

Fig. 3 is the plan view of Fig. 1.

Fig. 4 is the schematic representation of shaft seal structure among Fig. 1.

Embodiment

Embodiment one

The single gear retarder of present embodiment as depicted in figs. 1 and 2, on the casing by two parallel rotating shafts of roller bearings---input gear shaft 1 and output shaft 2, fixing gearwheel 3 on the output shaft 2.The casing appearance is undulatory curved-surface structure, fastens the back by upper box 6 and lower box 5 and fixedly forms by clamping bolt 7.Upper box is provided with the oil-containing groove 10 (referring to Fig. 3) of three connections, and mounted custom-designed oil trap 12, the two ends of this oil trap are communicated with oil-containing groove, be shaped on the oilhole 11 that is communicated with bearing in the oil-containing groove, therefore can when retarder operation, collect the lubricant oil that gear splashes, flow to then in the oil-containing groove of connection, bearing is carried out lubricated reliably by the oil receiving hole in the oil-containing groove.

In addition, as seen from Figure 3, the rolling bearing 8 of supporting revolving shaft is installed by bearing support 7 on the casing, the outer end of bearing support 7 is the cover plate 3-1 of inner hole sleeve outside rotating shaft fixedly, this cover plate is shaped on the big step hole of section in outer section little, the position that rotating shaft is arranged in the outer section of cover plate aperture is fixed with axle sleeve 4-1, and the outside framework oil seal 5-1 of band inner frame is housed between the outer section aperture of this axle sleeve 4-1 and cover plate 3-1.Between the inner ring distance ring 6-1 of axle sleeve 4-1 and rolling bearing 8 the oil seal ring 2-1 that is fixed in the rotating shaft is housed, the outer section cylindrical of this oil seal ring 2-1 becomes movingly with the inner segment aperture of cover plate 3-1, the oil sealing rib 2-2 of retaining at cover plate 3 endoporus step places that extend outwardly out of the middle part between its outer section cylindrical and the lining section cylindrical.Be fixed with oil deflector 9-1 between the outer ring positioning ring 1-1 of section macropore and rolling bearing in the cover plate 3-1, oil baffle 9-2 is extended at the middle part of oil deflector 9-1 endoporus inwardly, and a section cylindrical becomes movingly in the endoporus of this oil baffle 9-2 and the oil seal ring.

Facts have proved that the single gear retarder mounting or dismounting of present embodiment are easy, easy to maintenance, good seal does not have oil leakage phenomenon, long service life substantially.

In addition to the implementation, the utility model can also have other mode of executions.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.

Claims

1, a kind of single gear retarder, comprise casing, pass through two parallel rotating shafts of roller bearings on the described casing, described rotating shaft comprises input gear shaft and output shaft, the fixing gearwheel that meshes with gear shaft on the described output shaft, it is characterized in that: described casing appearance adopts the corrugated curved-surface structure, is made of upper and lower casing, be provided with the oil-containing groove that is interconnected in the described upper box, and the oil trap that is communicated with oil-containing groove is installed.

2, according to the described single gear retarder of claim 1, it is characterized in that: the rolling bearing that supporting revolving shaft is installed by bearing support on the described casing, the outer end of described bearing support is the cover plate of inner hole sleeve outside rotating shaft fixedly, the position that described rotating shaft is arranged in the cover plate endoporus is fixed with axle sleeve, between the endoporus of described axle sleeve and cover plate oil sealing is housed, between the inner ring distance ring of described axle sleeve and rolling bearing the oil seal ring that is fixed in the rotating shaft is housed also, the cylindrical of described oil seal ring becomes movingly with the endoporus of described cover plate, the oil sealing rib extends outwardly out in the middle part of the cylindrical of described oil seal ring, be fixed with oil deflector between the outer ring positioning ring of described cover plate and rolling bearing, oil baffle is extended at the middle part of described oil deflector endoporus inwardly, and the endoporus of described oil baffle becomes movingly with oil seal ring.

3, according to the described single gear retarder of claim 2, it is characterized in that: described upper box has mounted oil trap, and the two ends of described oil trap are communicated with oil-containing groove, is shaped on the oilhole that is communicated with bearing in the described oil-containing groove.

4, according to the described single gear retarder of claim 3, it is characterized in that: described cover plate is shaped on the big step hole of section in outer section little, described rotating shaft is arranged in the position fixed axle sleeve of the outer section of cover plate aperture, the seal ring oil sealing of band inner frame is housed between the outer section aperture of described axle sleeve and cover plate, outer section cylindrical of described oil seal ring becomes movingly with outer section aperture of cover plate, and the oil sealing rib retaining that described oil seal ring middle part extends outwardly out is at cover plate endoporus step place.

5, according to the described single gear retarder of claim 4, it is characterized in that: a section cylindrical becomes movingly in the fixed stop scraper ring between the outer ring positioning ring of section macropore and rolling bearing in the described cover plate, the endoporus of described oil baffle and oil seal ring.