CN201705898U

CN201705898U - Vertical type speed reducer lower output shaft sealing device and speed reducer with same

Info

Publication number: CN201705898U
Application number: CN2010201808427U
Authority: CN
Inventors: 胡炜
Original assignee: WORLD TRANSMISSION TECHNOLOGY (TIANJIN) Co Ltd
Current assignee: Ward drive (Tianjin) Limited by Share Ltd
Priority date: 2010-04-29
Filing date: 2010-04-29
Publication date: 2011-01-12
Anticipated expiration: 2020-04-29

Abstract

An embodiment of the utility model discloses a vertical type speed reducer lower output shaft sealing device, which comprises a spacer ring, a V-shaped oil seal and an O-shaped ring, wherein the spacer ring is sleeved on a lower output shaft, the V-shaped oil seal mounted on the spacer ring matches with a gear of the speed reducer, and the O-shaped ring mounted on the spacer ring matches with a box body of the speed reducer. The utility model further discloses a vertical speed reducer provided with the sealing device. A labyrinth ring adopted in the prior art is replaced by combination of the spacer ring and the V-shaped oil seal in the embodiment, a clearance between the spacer ring and the gear can be sealed by the V-shaped oil seal, and lubricating oil can not enter a sealed cavity via the clearance between the spacer ring and the gear, thereby achieving sealing effect which is much better than that of the labyrinth ring. Further, the O-shaped ring prevents lubricating oil in the box body from entering the sealed cavity.

Description

Go out shaft sealer under the vertical type speed reducer (change gear) and have the speed reducer of sealing device

Technical field

The utility model relates to the vertical type speed reducer (change gear) technical field, more particularly, relates to the speed reducer that goes out shaft sealer under a kind of vertical type speed reducer (change gear) and have the sealing device.

Background technique

Shaft under the vertical type speed reducer (change gear) generally is meant output shaft, and output shaft generally all is to connect working machine, because the working environment of working machine is forbidden leakage of oil, so shaft is down had strict seal request.

Prior art about the solution of leakage of oil problem is: the next bearing of following shaft is by outside grease nipple injection grease lubrication, because grease compares thickness, not easy to leak; The inner sealing chamber is cooperated with gear and casing by labyrinth ring, O type circle and constitutes, and prevents that lubricant oil infiltrates Seal cage in the casing.

Although use the design of labyrinth ring, still there is the slit to exist between labyrinth ring and the gear, through running for a long time, still have lubricant oil and enter labyrinth ring, thereby enter Seal cage by the slit, there is certain leakage of oil hidden danger.

The model utility content

In view of this, the utility model provides the speed reducer that goes out shaft sealer under a kind of vertical type speed reducer (change gear) and have the sealing device, with the problem of shaft leakage of oil under the better solution vertical type speed reducer (change gear).

For achieving the above object, the utility model provides following technological scheme:

Go out shaft sealer under a kind of vertical type speed reducer (change gear), it is characterized in that, comprising:

Be sleeved on the isolating ring on the described shaft down;

Be installed on the described isolating ring, and with the V-type oil sealing of the gear matched of this speed reducer;

Be installed on the described isolating ring, and the O type circle that cooperates with the casing of this speed reducer.

Preferably, go out in the shaft sealer under the above-mentioned vertical type speed reducer (change gear), also comprise: lip type oil seal and V-type circle combine goes out shaft sealing.

A kind of vertical type speed reducer (change gear) comprises above-mentioned each described seal arrangement.

Preferably, in the above-mentioned vertical type speed reducer (change gear), also comprise and carry the lubricated described oil pipe of the lubricating grease of the next bearing of shaft down.

From above-mentioned technological scheme as can be seen, the utility model embodiment replaces labyrinth ring of the prior art by the cooperation of isolating ring and V-type oil sealing, with the slit between V-type oil sealing sealing isolating ring and the gear, prevent that lubricant oil from entering Seal cage from the slit between isolating ring and the gear, effect will be significantly better than using labyrinth ring.In addition, by being set, O type circle stoped lubricant oil infiltration Seal cage in the casing.

Description of drawings

In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Shaft schematic diagram of sealing device under a kind of vertical type speed reducer (change gear) that Fig. 1 provides for the utility model embodiment.

Embodiment

The utility model discloses the speed reducer that goes out shaft sealer under a kind of vertical type speed reducer (change gear) and have the sealing device, with the problem of shaft leakage of oil under the better solution vertical type speed reducer (change gear).

Below in conjunction with the accompanying drawing among the utility model embodiment, the technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.

See also Fig. 1, shaft schematic diagram of sealing device under a kind of vertical type speed reducer (change gear) that Fig. 1 provides for the utility model embodiment.

Wherein, 1 is following shaft, and 2 is isolating ring, and 3 is the V-type oil sealing, and 4 is O type circle, and 5 is lip type oil seal, and 6 is the V-type circle, and 7 is gear, and 8 is casing, and 9 is oil pipe.

In order to solve the problem that reveal in the slit between the labyrinth ring and gear in the prior art, the utility model substitutes labyrinth rings and solves problem in the background technique by adopting isolating ring 2 to add V-type oil sealing 3.

As shown in Figure 1, the next bearing of following shaft 1 adopts oil pipe 9 injection grease lubrications, because grease thickness relatively, and use amount is smaller, makes a gesture of measuring little mutually with lubricant oil and is not easy seepage.We have surrounded the dry place of a sealing jointly with isolating ring 1, V-type oil sealing 3 and O type circle 4 and gear 7 and casing 8, play seal action, prevent that lubricant oil infiltrates in the Seal cage in the casing, avoid causing bigger leakage of oil hidden danger.

Wherein, V-type oil sealing 3 is installed on the isolating ring 2, cooperates with gear 7, plays seal action, prevents that lubricant oil from infiltrating Seal cage along the slit between isolating ring 2 and the gear 7; O type circle 4 is installed on the isolating ring 2 equally, closely cooperates with casing 8, plays seal action equally, prevents that lubricant oil from entering Seal cage by the slit between isolating ring 2 and the casing 8.

The sealing effect of existing labyrinth ring does not obviously have combining of isolating ring 2 and V-type oil sealing 3.The compound mode of isolating ring 2 and V-type oil sealing 3 can avoid lubricant oil to infiltrate Seal cage along the slit between isolating ring 2 and the gear 7.

Go out the combining form that lip type oil seal 5 and V-type circle 6 are adopted in shaft sealing, lip type oil seal 5 is mainly used to retaining oil, and V-type circle 6 is used for preventing dust.

Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and other embodiments' difference that identical similar part is mutually referring to getting final product between each embodiment.

To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.

Claims

1. go out shaft sealer under a vertical type speed reducer (change gear), it is characterized in that, comprising:

Be sleeved on the isolating ring on the described shaft down;

2. go out shaft sealer under the vertical type speed reducer (change gear) as claimed in claim 1, it is characterized in that, also comprise: lip type oil seal and V-type circle combine goes out shaft sealing.

3. a vertical type speed reducer (change gear) is characterized in that, comprises seal arrangement as claimed in claim 1 or 2.

4. vertical type speed reducer (change gear) as claimed in claim 3 is characterized in that, also comprises carrying being used for the lubricated described oil pipe of the lubricating grease of the next bearing of shaft down.