CN201687922U - Speed reducer capable of preventing oil leakage - Google Patents

Abstract

The utility model relates to a speed reducer capable of preventing oil leakage, comprising an upper shell (1) of the speed reducer, a lower shell (2) of the speed reducer, a bearing (3), an input or output shaft (4), a gear (5), a sealing end cover (8) and a framework seal (9). The speed reducer is characterized in that the upper shell and the lower shell of the speed reducer are provided with an oil feeding hole (6) and an oil returning hole (7); lubricant flowing into an oil chamber (10) of the bearing through the oil feeding hole (6) and the bearing (3) can flow back to an oil tank (11) of a gearbox through the oil returning hole (7), thus effectively preventing the oil leakage of the dynamic seal of the input or output shaft (4) of the speed reducer. The speed reducer can effectively prevent the oil leakage of the dynamic seal by slightly changing the common speed reducer and has the characteristics of easiness in operation, good lubricating and oil-leakage preventing effect and low cost.

Description

A kind of anti-leakage of oil retarder

Technical field

The utility model relates to a kind of retarder, relates in particular to a kind of anti-leakage of oil retarder of a motive sealing that inputs or outputs.

Background technique

At present speed reducer mainly by reducer shell, input or output axle, end cover, driving gear and form.An end that inputs or outputs axle passes from reducer shell and stretches out from end cover.Because needing to add lubricant oil in retarder is lubricated driving gear and bearing, it can be run well, but lubricant oil flow into from the bearing play in the space between bearing and the end cover easily, when oily cumulative in the space between bearing and the end cover, under the effect of oil pressure, will flow to by the gap of end cover outside the speed reducer, make the lubricant oil in the retarder constantly reduce, finally can make driving gear and bearing be easy to wear and tear and can't work, flow of lubricant also pollutes and has destroyed retarder environment on every side to the outside of retarder simultaneously.The axle that inputs or outputs of especially horizontal retarder is motive sealing, and mostly is reinforced seal, ubiquity leakage of oil or oil impregnate phenomenon, and not can solve always.Therefore, influenced the normal operation of speed reducer, and befouling environment, cost of production is increased.But at present to the solution that the ubiquitous leakage of oil of motive sealing place or oil impregnate phenomenon also fail to obtain essence that inputs or outputs of horizontal retarder.

The model utility content

Order of the present utility model is to provide a kind of anti-leakage of oil retarder that lubricant oil does not leak in the retarder that makes, thereby satisfies needs such as production and environmental protection.

To achieve these goals, the technical solution adopted in the utility model is a kind of anti-leakage of oil retarder, the upper shell 1 and the lower shell body 2 that comprise retarder, be provided with symmetrical bearing 3 at the two ends of last lower shell body, be provided with in the bearing 3 from an end of housing stretch out input or output the axle 4, and be arranged on and input or output on the axle 4 and be positioned at the gear 5 of gear-box, its characteristics are to be provided with an oil inlet hole 6 on the top of the housing of the external part that inputs or outputs axle 4, be provided with a spill port 7 in the lower part of frame that inputs or outputs axle 4 external part, the external part that inputs or outputs axle 4 is provided with an end cover 8 and is connected with housing seal up and down.

The utility model end cover 8 is provided with outside framework oil seal 9, thereby the end cover 8 that inputs or outputs on axle 4 the external part is connected formation one bearing grease chamber 10 between bearing 3 and end cover 8 with housing seal up and down, the lubricant oil that flows in the bearing grease chamber 10 by oil inlet hole 6 and bearing 3 will flow back in the oil sump 11 of gear-box by spill port 7 or oil-return groove, thereby keep in the gear-box oil sump 11 enough lubricant oil being arranged all the time.

The utility model only needs to make improvements slightly on common retarder effectively to prevent its motive sealing leakage of oil, is characterized in that easy to operate, anti-leakage of oil is effective, saves lubricant oil and cost of production.

Description of drawings

Fig. 1 is a mounting structure schematic representation of the present utility model.Wherein: upper shell-1, lower shell body-2, bearing-3, input or output axle-4, gear-5, oil inlet hole-6, spill port-7, end cover-8, outside framework oil seal-9, bearing grease chamber-10, oil sump-11.

Embodiment

Below in conjunction with working principle of the present utility model and accompanying drawing structure of the present utility model is described in detail, makes above-mentioned purpose of the present utility model and characteristics clearer.

Working principle of the present utility model is: when retarder turns round, lubricant movement in the gear 5 driven gear case oil sumps 11, part oil is thrown toward bearing 3 and oil inlet hole 6, and from lubricant oil part inflow bearing 3 rolling elements of oil inlet hole 6, a part flows into the bottom of bearing grease chamber 10.Because during the retarder running, bearing 3 rolling elements also rotate with fast speeds, therefore the lubricant oil that enters in the bearing grease chamber 10 is difficult to flow back in the oil sump 11 of gear-box by bearing 3 again, if do not have spill port or oil-return groove 7, the lubricant oil that then enters in the bearing grease chamber 10 can very fast accumulation, its oil level can reach and surpass the potted line of reinforced seal 9, at this moment piled up in the bearing grease chamber 10 more lubricant oil has been arranged, and under the disturbance of the bearing 3 that rotates, produce dynamic pressure, and outside framework oil seal 9 can not bear too big pressure, this moment, lubricant oil was very easily extruded from outside framework oil seal 9, thereby leakage of oil or oil impregnate phenomenon occurred.Behind design spill port or oil-return groove 7 on the lower shell body 2 of retarder, unnecessary lubricant oil will flow back in the gear-box oil sump 11 by spill port or oil-return groove 7 in the bearing grease chamber 10, oil level in the bearing grease chamber 10 just can not reach the sealing height of reinforced seal 9 like this, thereby can not produce bigger dynamic pressure yet, therefore, can prevent effectively that retarder from inputing or outputing the motive sealing oil leakage phenomenon of axle 4.

Following embodiment as shown in Figure 1, present embodiment is horizontal speed reducer, but equally also can be applicable to the leakproof oil seal of other speed reducer approximate or identical with sealing configuration of the present utility model.

Anti-leakage of oil retarder of the present utility model has comprised upper shell 1 and lower shell body 2, on the housing of the two ends of last lower shell body, respectively be provided with bearing 3, inputing or outputing axle 4 is installed in two bearings 3, bearing 3 supports and inputs or outputs axle 4 runnings, input or output on the axle 4 gear 5 is installed, gear 5 is positioned at gear-box, its underpart is immersed in the oil sump 11 of gear-box, when gear rotates, lubricant oil in the oil sump is taken up, get rid of to bearing 3 and oil inlet hole 6, in lubricating bearings 3, also flow in the bearing grease chamber 10; An end that inputs or outputs axle 4 is installed in the speed reducer, the other end stretches out from bearing 3 and housing, input or output and on axle 4 the external part end cover 8 is installed and is tightly connected by bolt or other fastening piece with last lower shell body, simultaneously, end cover 8 with input or output the position that contact of axle 4 external parts on also be provided with outside framework oil seal 9, thereby formation one seals good bearing grease chamber 10 between bearing 3 and end cover 8.

The lubricant oil of overheap produces dynamic pressure to the utility model in the bearing grease chamber 10 in order not allow, and make lubricant oil from reinforced seal 9 and input or output axle and extrude between 4, by improvement to existing speed reducer structure, top at the housing that inputs or outputs axle 4 external part is provided with an oil inlet hole 6, lower part of frame at the external part that inputs or outputs axle 4 is provided with a spill port 7, the gear-box of speed reducer at work, lubricant oil flows in the bearing grease chamber 10 by oil inlet hole 6 and bearing 3, flow back in the oil sump 11 of gear-box by spill port or oil-return groove 7 again, the lubricant oil that is about to waste is effectively reclaimed, thereby kept in the gear-box oil sump 11 enough lubricant oil being arranged all the time, guaranteed the lubricated and cooling effect of bearing.

The utility model only need slightly make improvements on common decelerator can effectively prevent its movable sealing leakage of oil, and the utility model has guaranteed sealing and lubricant effect, has reduced the pollution to surrounding environment, and operation improving is very easy to simultaneously, and production cost is lower.

Claims (4)

1. An oil-leakage reducer, comprising an upper casing (1) and a lower casing (2) of the reducer, symmetrical bearings (3) are arranged at both ends of the upper and lower casings, and bearings (3) are provided with The input or output shaft (4) protruding from one end of the housing, and the gear (5) arranged on the input or output shaft (4) and located in the gearbox, is characterized in that the input or output shaft (4) An oil inlet hole (6) is arranged on the upper part of the casing at the extension end, and an oil return hole (7) is arranged on the lower part of the casing at the extension end of the input or output shaft (4), and the extension of the input or output shaft (4) A sealing end cover (8) is arranged on the outlet end and is sealed and connected with the upper and lower casings. 2. The anti-leakage reducer according to claim 1, characterized in that the sealing end cover (8) on the extended end of the input or output shaft (4) is in sealing connection with the upper and lower housings so that the bearing ( 3) A bearing oil chamber (10) is formed between the sealing end cover (8). 3. The oil-leakage-proof reducer according to claim 1 or 2, characterized in that a skeleton oil seal (9) is arranged in the sealing end cover (8). 4. The anti-leakage reducer according to claim 1, characterized in that the oil return hole (7) can be an oil return groove.

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