CN210440453U - Installation structure for preventing oil leakage of high-speed shaft of gear box - Google Patents

Abstract

The utility model discloses a prevent gear box high-speed axle oil impregnate mounting structure, including axis of rotation and gearbox body, gearbox body's inside is provided with the axis of rotation, it is provided with first antifriction bearing and second antifriction bearing with the crossing department of axis of rotation to lie in on the gearbox body, the one side that lies in first antifriction bearing on the gearbox body is provided with the seal, one side of gearbox body is fixed mutually through fixing bolt and second bearing lid, and the seal lies in between second bearing lid and the first antifriction bearing, be provided with solid fixed ring on the seal. A prevent gear box high-speed axle oil impregnate mounting structure, the seal can seal between antifriction bearing and the bearing cap, and reduces the lubricating oil leakage who deposits in the oil groove, and can fix the bearing inner race, can fix the sealing washer, reduce because the sealing washer takes place the condition of leaking when pressing untight.

Description

Installation structure for preventing oil leakage of high-speed shaft of gear box

Technical Field

The utility model relates to a sealed mounting structure design field, in particular to prevent gear box high-speed axle oil impregnate mounting structure.

Background

In a wind power generation unit, a gear box is driven by a motor to drive a pitch control system to work, wherein a high-speed shaft of the gear box needs to be sealed with the motor box, oil lubrication exists between the high-speed shaft and a box body, but the sealing of a bearing is difficult to install tightly, the phenomenon that a bearing of an output shaft of the motor is burnt due to oil leakage of the bearing and lack of a rotating machine can occur, on the aspect of eliminating the problem of oil leakage of the bearing, various methods are adopted during design, processing and manufacturing of parts, the oil leakage phenomenon of an oil-leaking bearing of a shaft seal is reduced or thoroughly eradicated through a series of methods, and the waste of lubricating oil or the pollution to equipment are reduced. However, in the existing sealing structure between the high-speed shaft and the gear box, certain oil leakage exists during sealing, oil leakage exists between the bearing cover and the box body, lubricating oil in the machine is easy to leak, and leakage can also be caused due to the fact that a sealing ring is not tightly pressed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a prevent gear box high-speed axle oil impregnate mounting structure can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a prevent gearbox high-speed shaft oil leakage mounting structure, includes axis of rotation and gearbox casing, gearbox casing's inside is provided with the axis of rotation, it is provided with first antifriction bearing and second antifriction bearing with the crossing department of axis of rotation to lie in on the gearbox casing, the last one side that lies in first antifriction bearing of gearbox casing is provided with the seal, one side of gearbox casing is fixed mutually with the second bearing lid through fixing bolt, and the seal lies in between second bearing lid and the first antifriction bearing, be provided with solid fixed ring on the seal, be provided with second sealing washer and third sealing washer between gearbox casing, seal and the second bearing lid.

Preferably, the seal is including depositing oil groove, first sealed piece, sealed clearance and the sealed piece of second, one side of first antifriction bearing is provided with and deposits the oil groove, first sealed piece and the sealed piece of second are located and are located between second bearing lid and the first antifriction bearing, and mutually support between first sealed piece and the sealed piece of second, first sealed piece and the sealed piece department of cooperateing of second form sealed clearance, and sealed clearance and oil groove intercommunication.

Preferably, the fixing ring comprises a sleeve ring, an expansion spring, a connecting thread, an ejection block, a limiting portion and a bottom plate, the bottom plate is welded on the sleeve ring, the sleeve ring is fixed with the sealing body through the connecting thread, the sleeve ring is respectively contacted with the second sealing ring and the third sealing ring, the expansion spring is arranged inside the sleeve ring, one end of the expansion spring is connected with the ejection block, the ejection block is contacted with the second sealing ring and the third sealing ring, and the sleeve ring is provided with the limiting portion matched with the ejection block.

Preferably, the other side of the gear box body is fixed with the first bearing cover through a fixing bolt, and a second rolling bearing is arranged between the first bearing cover and the gear box body.

Preferably, the rotating shaft is connected with the transmission gear through a key.

Preferably, an oil slinger is disposed between the rotating shaft and the second bearing cap.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses in, be provided with the seal, the seal can seal between antifriction bearing and the bearing cap, and reduces the lubricating oil leakage of depositing in the oil groove, and can fix the bearing inner race, is provided with solid fixed ring, can fix the sealing washer through the fixed ring, and can compress tightly the sealing washer through ejecting piece, reduces because the sealing washer takes place the condition of leaking when not pressing tightly.

Drawings

Fig. 1 is a schematic view of the overall structure of a mounting structure for preventing oil leakage of a high-speed shaft of a gear box according to the present invention;

FIG. 2 is an enlarged view at A of FIG. 1;

fig. 3 is an enlarged view of fig. 2 at B.

In the figure: 1. a rotating shaft; 2. a gear housing; 3. a transmission gear; 4. a first bearing cover; 5. a first seal ring; 6. a key; 7. a first rolling bearing; 8. a second bearing cover; 9. an oil slinger; 10. a seal body; 1001. an oil storage tank; 1002. a first seal block; 1003. sealing the gap; 1004. a second seal block; 11. a second seal ring; 12. a fixing ring; 1201. a collar; 1202. a tension spring; 1203. connecting threads; 1204. ejecting a block; 1205. a limiting part; 1206. a base plate; 13. a third seal ring; 14. a second rolling bearing; 14. a second rolling bearing.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-3, an installation structure for preventing oil leakage of a high-speed shaft of a gear box comprises a rotating shaft 1 and a gear box body 2, wherein the rotating shaft 1 is arranged inside the gear box body 2, a first rolling bearing 7 and a second rolling bearing 14 are arranged on the gear box body 2 at the intersection with the rotating shaft 1, a sealing body 10 is arranged on one side of the gear box body 2, which is positioned on the first rolling bearing 7, one side of the gear box body 2 is fixed with a second bearing cover 8 through a fixing bolt, the sealing body 10 is positioned between the second bearing cover 8 and the first rolling bearing 7, a fixing ring 12 is arranged on the sealing body 10, and a second sealing ring 11 and a third sealing ring 13 are arranged between the gear box body 2, the sealing body 10 and the second;

the sealing body 10 comprises an oil storage groove 1001, a first sealing block 1002, a sealing gap 1003 and a second sealing block 1004, wherein the oil storage groove 1001 is formed in one side of the first rolling bearing 7, the first sealing block 1002 and the second sealing block 1004 are located between the second bearing cover 8 and the first rolling bearing 7, the first sealing block 1002 and the second sealing block 1004 are matched with each other, the sealing gap 1003 is formed at the matching position of the first sealing block 1002 and the second sealing block 1004, and the sealing gap 1003 is communicated with the oil storage groove 1001; the fixing ring 12 comprises a lantern ring 1201, a telescopic spring 1202, a connecting thread 1203, an ejection block 1204, a limiting part 1205 and a bottom plate 1206, the bottom plate 1206 is welded on the lantern ring 1201, the lantern ring 1201 is fixed with the sealing body 10 through the connecting thread 1203, the lantern ring 1201 is respectively contacted with a second sealing ring 11 and a third sealing ring 13, the telescopic spring 1202 is arranged inside the lantern ring 1201, one end of the telescopic spring 1202 is connected with the ejection block 1204, the ejection block 1204 is contacted with the second sealing ring 11 and the third sealing ring 13, and the limiting part 1205 matched with the ejection block 1204 is arranged on the lantern ring 1201; the other side of the gear box body 2 is fixed with the first bearing cover 4 through a fixing bolt, and a second rolling bearing 14 is arranged between the first bearing cover 4 and the gear box body 2; the rotating shaft 1 is connected with the transmission gear 3 through a key 6; an oil slinger 9 is provided between the rotating shaft 1 and the second bearing cap 8.

It should be noted that, the utility model relates to a prevent gear box high speed shaft oil leakage mounting structure, during the installation, embolia first antifriction bearing 7, drive gear 3, second antifriction bearing 14 on the axis of rotation 1, and drive gear 3 is connected with axis of rotation 1 through key 6, then install first sealing washer 5 and first bearing lid 4 at first antifriction bearing 7, and seal second antifriction bearing 14 through first bearing lid 4 and first sealing washer 5, install seal 10 in first antifriction bearing 7 department, make first sealed piece 1002 and second sealed piece 1004 cooperate each other, then install second bearing lid 8 on gear box 2 through the bolt, first sealed piece 1002 and second sealed piece 1004 can carry out preliminary seal to the inside at this moment, because there is sealed clearance 1003 when cooperating between first sealed piece 1002 and the second sealed piece 1004, can make the lubricating oil in the oil storage tank 1001 leak easily, at this time, when the lubricating oil flows from the sealing gap 1003 to the gear box body 2 and the second bearing cover 8, the lubricating oil can be sealed by the second sealing ring 11 and the third sealing ring 13, the second sealing ring 11 and the third sealing ring 13 are tightly pressed under the action of the fixing ring 12, because the expansion spring 1202 and the ejection block 1204 are placed in the lantern ring 1201 and are fixed through the bottom plate 1206, the expansion spring 1202 in the lantern ring 1201 pushes the ejection block 1204 and is limited through the limiting part 1205, the ejection block 1204 tightly presses the second sealing ring 11 and the third sealing ring 13, the sealing rings are tightly combined with the gear box body 2 and the second bearing cover 8, the oil leakage effect is achieved, the oil baffle ring 9 rotates the shaft 1 and the second bearing cover 8 for sealing, and the sealing effect is good.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a prevent gearbox high speed axle oil impregnate mounting structure which characterized in that: including axis of rotation (1) and gear box body (2), the inside of gear box body (2) is provided with axis of rotation (1), gear box body (2) are gone up to be located and are provided with first antifriction bearing (7) and second antifriction bearing (14) with axis of rotation (1) crossing department, the one side that is located first antifriction bearing (7) on gear box body (2) is provided with seal (10), one side of gear box body (2) is fixed mutually through fixing bolt and second bearing lid (8), and seal (10) are located between second bearing lid (8) and first antifriction bearing (7), be provided with solid fixed ring (12) on seal (10), be provided with second sealing washer (11) and third sealing washer (13) between gear box body (2), seal (10) and second bearing lid (8).

2. The mounting structure for preventing oil leakage of a high speed shaft of a gear box according to claim 1, wherein: the sealing body (10) comprises an oil storage groove (1001), a first sealing block (1002), a sealing gap (1003) and a second sealing block (1004), the oil storage groove (1001) is formed in one side of the first rolling bearing (7), the first sealing block (1002) and the second sealing block (1004) are located between the second bearing cover (8) and the first rolling bearing (7), the first sealing block (1002) and the second sealing block (1004) are matched with each other, the sealing gap (1003) is formed at the matching position of the first sealing block (1002) and the second sealing block (1004), and the sealing gap (1003) is communicated with the oil storage groove (1001).

3. The mounting structure for preventing oil leakage of a high speed shaft of a gear box according to claim 1, wherein: the fixing ring (12) comprises a sleeve ring (1201), a telescopic spring (1202), a connecting thread (1203), an ejection block (1204), a limiting part (1205) and a bottom plate (1206), the bottom plate (1206) is welded on the sleeve ring (1201), the sleeve ring (1201) is fixed with the sealing body (10) through the connecting thread (1203), the sleeve ring (1201) is respectively contacted with the second sealing ring (11) and the third sealing ring (13), the telescopic spring (1202) is arranged inside the sleeve ring (1201), the ejection block (1204) is connected to one end of the telescopic spring (1202), the ejection block (1204) is contacted with the second sealing ring (11) and the third sealing ring (13), and the limiting part (1205) matched with the ejection block (1204) is arranged on the sleeve ring (1201).

4. The mounting structure for preventing oil leakage of a high speed shaft of a gear box according to claim 1, wherein: the other side of the gear box body (2) is fixed with a first bearing cover (4) through a fixing bolt, and a second rolling bearing (14) is arranged between the first bearing cover (4) and the gear box body (2).

5. The mounting structure for preventing oil leakage of a high speed shaft of a gear box according to claim 1, wherein: the rotating shaft (1) is connected with the transmission gear (3) through a key (6).

6. The mounting structure for preventing oil leakage of a high speed shaft of a gear box according to claim 1, wherein: an oil retainer ring (9) is arranged between the rotating shaft (1) and the second bearing cover (8).

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