CN211667037U - Double-cambered-surface sealing mechanism for wind power turntable bearing - Google Patents

Abstract

The utility model discloses a wind-powered electricity generation carousel bearing double arc face sealing mechanism, wind-powered electricity generation carousel bearing includes the outer lane, including inner circle and setting, sealing washer between the outer lane, the outer lane has outer lane terminal surface and outer lane axial plane, the inner circle has inner circle terminal surface and inner circle axial plane, the section of sealing washer is I-shaped, the installation handle has, in the installation handle, the outside is formed with curved, the outside keeps off the shoulder, the both sides that keep off the shoulder outside have a dustproof lip, the both sides that keep off the shoulder in have an oil seal lip, outer lane radial slot and the radial slot of inner circle have been seted up to the symmetry respectively on outer lane axial plane and the inner circle axial plane, the radial slot of outer lane and the radial slot of inner circle have the outside terminal surface of slot of symmetry. The utility model discloses a two cambered surface sealing mechanism compressive capacity of wind-powered electricity generation carousel bearing is stronger, sealed effect is better, the reliable performance is higher.

Description

Double-cambered-surface sealing mechanism for wind power turntable bearing

Technical Field

The utility model belongs to the technical field of a wind power generation equipment carousel bearing technique and specifically relates to a two cambered surface sealing mechanism of wind-powered electricity generation carousel bearing is related to.

Background

With the increasing emphasis of the country on clean energy, the wind power generation technology makes great progress in China. The daily work group of the wind driven generator belongs to a high-altitude operation environment, the working environment is worse than a low-altitude surface, and the maintenance in the follow-up operation is very difficult. The turntable bearing is used as a key component of a fan variable pitch system and a yaw system, bears large radial load, axial load and overturning moment, has important reliability, and provides important guarantee for ensuring long-term stable operation of a sealing mechanism of the turntable bearing.

The turntable bearing comprises an outer ring, an inner ring, a rolling body, a retainer, a sealing element and the like, wherein when the bearing works, enough lubricating grease needs to be arranged between the rolling body and a raceway of the inner ring and the outer ring, and in order to prevent the leakage of the lubricating grease and prevent environmental impurities from entering the inside of the bearing when the turntable bearing works, the transition dry friction of related parts is caused, so that the service life of the whole turntable bearing is influenced, and two sealing structures need to be respectively arranged on two end faces of the bearing. The early single-lip sealing structure has low pressure bearing capacity and poor dust prevention capacity, and cannot meet the environmental technical use condition on the existing wind power turntable bearing.

The existing wind power turntable bearing sealing mechanism is diversified and roughly divided into two types. The other is a double-lip sealing structure, as shown in figure 1, a sealing ring is provided with an annular mounting handle on one side of a bearing and is mounted in a mounting groove of an outer ring of the bearing, the annular mounting handle is provided with a semicircular limiting bulge and an agnail to prevent the sealing ring from being separated from the mounting groove, and an oil sealing lip and a dust lip of the sealing ring are in interference fit with the same axial surface of an inner ring of the bearing to play a sealing role. The disadvantages of this sealing structure are: in addition, wind conditions are complex when the fan works, the bearing is influenced by instantaneous load to relatively overturn the inner ring and the outer ring, the sealing lip of the sealing ring and a matching surface can be possibly caused to have insufficient interference, and therefore impurities enter and grease leakage can occur. The other sealing structure is similar to the structure in installation form, the sealing lips of the sealing ring are changed into multiple lips from double lips, and the multiple oil sealing lips are deeply inserted into the groove of the bearing inner ring, so that the sealing effect is improved to a certain extent, and the sealing structure has the defects that the number of the lips is large, the frictional resistance with the bearing inner ring is increased, and the starting torque of the bearing is increased; secondly, the sealing lip is relatively weak, so that the sealing lip is easy to wear and is poor in oil pressure resistance; thirdly, the bearing inner ring needs to be processed with grooves, the process is complex, and the manufacturing cost is increased.

Therefore, the existing sealing structure of the turntable bearing has the defects of low pressure resistance, poor sealing effect, complex processing technology and the like, so that the sealing structure has poor reliability and the service life of the sealing ring is not long.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide a wind-powered electricity generation carousel bearing double arc face sealing mechanism that compressive capacity is stronger, sealed effect is better, the reliability can be higher.

In order to solve the technical problem, the utility model relates to a wind power turntable bearing double-arc surface sealing mechanism, this wind power turntable bearing has matched with outer lane, inner circle and adorns the sealing washer between outer lane and inner circle, the outer lane has outer lane terminal surface and outer lane axial plane, the inner circle has inner circle terminal surface and inner circle axial plane, the section of sealing washer is I-shaped, the I-shaped sealing washer has the installation handle, the outside of installation handle is formed with curved outer fender shoulder, the inboard is formed with curved inner fender shoulder, the both sides of curved outer fender shoulder have the dustproof lip, the both sides of curved inner fender shoulder have the oil seal lip, correspondingly outer lane radial slot and inner circle radial slot have symmetry respectively to be seted up on outer lane axial plane and the inner circle axial plane, outer lane radial slot and inner circle radial slot have symmetrical slot outside end face, the inboard of outer lane terminal surface is formed with the recess terminal surface that the inner circle terminal surface matches, the I-shaped sealing ring is matched with the end face of the groove and the end face of the inner ring through the dustproof lips on two sides of the arc-shaped outer retaining shoulder of the I-shaped sealing ring, and is matched and arranged between the outer ring and the inner ring through the oil sealing lips on two sides of the arc-shaped inner retaining shoulder of the I-shaped sealing ring and the end face of the outer side of the groove of the outer ring radial groove and the inner ring radial groove.

The utility model has the advantages that: firstly, after the I-shaped sealing ring is installed, under the action of oil pressure in the bearing, the oil pressure is higher, and the oil sealing effect of oil sealing lips at two sides of the arc-shaped inner retaining shoulder is better; secondly, an arc-shaped structure formed by the dust lip and the oil sealing lip is not easy to form accumulation of environmental impurities and grease, the contact position of the lip mouth and the contact surface is the contact of two ends towards the inner side, and the dislocation of the horizontal plane of the bearing is easier to compensate; thirdly, the arc-shaped design of the oil sealing lip is easier to resist and disperse oil pressure, the mounting handle is not easy to fall off, and the sealing reliability is higher; fourthly, the cross section of the I-shaped sealing ring is simpler, the processing technology is reduced, the production efficiency is increased, and the installation and the maintenance are convenient.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a wind power turntable bearing double-lip sealing mechanism in the prior art.

Fig. 2 is a schematic structural diagram of a wind power turntable bearing multi-lip sealing mechanism in the prior art.

Fig. 3 is the structural schematic diagram of the utility model relates to a two cambered surface sealing mechanism of wind-powered electricity generation carousel bearing.

Fig. 4 is the utility model relates to a section schematic diagram of two cambered surface sealing washers among wind-powered electricity generation carousel bearing two cambered surface sealing mechanism.

Fig. 5 is the view of fig. 3 with the double cambered surface seal ring removed.

Detailed Description

Fig. 1 is a schematic structural diagram of a wind power turntable bearing double-lip sealing mechanism in the prior art. In the figure, the serial number 1 is a bearing outer ring, 5 is a bearing inner ring, 2 is an installation handle of a double-lip sealing ring, 3 is an oil sealing lip, and 4 is a dust lip.

Fig. 2 is a schematic structural diagram of a wind power turntable bearing multi-lip sealing mechanism in the prior art, and the structure is similar to that of fig. 1, except that an oil sealing lip with the serial number 3 is a multi-limb structure.

Referring to fig. 3-5, the utility model relates to a double-arc sealing mechanism for wind power turntable bearing, the wind power turntable bearing has an outer ring 10, an inner ring 20 and a sealing ring 30 installed between the outer ring 10 and the inner ring 20, the outer ring 10 has an outer ring end surface 11 and an outer ring axial surface 12, the inner ring 20 has an inner ring end surface 21 and an inner ring axial surface 22, the section of the sealing ring 30 is i-shaped, the i-shaped sealing ring 30 has a mounting handle 31, an arc-shaped outer shoulder 32 is formed on the outer side of the mounting handle, an arc-shaped inner shoulder 33 is formed on the inner side, two sides of the arc-shaped outer shoulder 32 have dust lips 34, two sides of the arc-shaped inner shoulder 33 have oil sealing lips 35, correspondingly, an outer ring radial groove 13 and an inner ring radial groove 23 are symmetrically formed on the outer ring axial surface 12 and the inner ring axial surface 22, the outer ring radial groove 13 and the inner ring radial groove 23 have, the inner side of the outer ring end face 11 is provided with a groove end face 14 matched with the inner ring end face 21, the I-shaped sealing ring 30 is matched with the groove end face 14 and the inner ring end face 21 through dust lips 34 on two sides of an arc-shaped outer retaining shoulder 32, and is matched with the groove outer end face 9 of the outer ring radial groove 13 and the inner ring radial groove 23 through oil sealing lips 35 on two sides of an arc-shaped inner retaining shoulder 33 between the outer ring 10 and the inner ring 20.

Claims (1)

1. The utility model provides a two cambered surface sealing mechanism of wind-powered electricity generation carousel bearing, this wind-powered electricity generation carousel bearing have matched with outer lane (10), inner circle (20) and adorn sealing washer (30) between outer lane (10) and inner circle (20), outer lane (10) have outer lane terminal surface (11) and outer lane axial plane (12), and inner circle (20) have inner circle terminal surface (21) and inner circle axial plane (22), its characterized in that: the section of sealing washer (30) is I-shaped, and I-shaped sealing washer (30) has installation handle (31), and the outside of installation handle is formed with curved outer fender shoulder (32), and inboard fender shoulder (33) in being formed with curved, and the both sides that arc kept off shoulder (32) outward have dust lip (34), and the both sides that keep off shoulder (33) in the arc have a seal oil lip (35), correspondingly outer lane radial slot (13) and inner circle radial slot (23) have been seted up to symmetry respectively on outer lane axial plane (12) and inner circle axial plane (22), and outer lane radial slot (13) and inner circle radial slot (23) have symmetrical slot outside end face (9), the inboard of outer lane terminal surface (11) be formed with inner circle terminal surface (21) matched with recess terminal surface (14), I-shaped sealing washer (30) with its arc keep off the dust lip (34) of shoulder (32) both sides with recess terminal surface (14) and terminal surface inner circle (21) cooperate, Oil sealing lips (35) on two sides of an arc-shaped inner retaining shoulder (33) of the oil sealing device are matched with the outer end face (9) of the groove of the outer ring radial groove (13) and the groove of the inner ring radial groove (23) and are arranged between the outer ring (10) and the inner ring (20).

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