CN215890817U

CN215890817U - Bearing sealing structure

Info

Publication number: CN215890817U
Application number: CN202121962253.9U
Authority: CN
Inventors: 殷予刚
Original assignee: Hangzhou Bearing Group Co ltd; Hangzhou Humanistic Equipment Bearing Co ltd; Shanghai C&U Group Co Ltd; C&U Co Ltd
Current assignee: Hangzhou Bearing Group Co ltd; Hangzhou Humanistic Equipment Bearing Co ltd; Shanghai C&U Group Co Ltd; C&U Co Ltd
Priority date: 2021-08-19
Filing date: 2021-08-19
Publication date: 2022-02-22
Anticipated expiration: 2031-08-19

Abstract

The utility model discloses a bearing sealing structure which comprises an outer ring, an inner ring and a rolling body, wherein the outer ring is sleeved on the inner ring, raceways for the rolling body to roll are respectively arranged on the inner peripheral wall of the outer ring and the outer peripheral wall of the inner ring, steel frameworks are respectively arranged on two sides of the raceways, two steel frameworks extend towards the inner peripheral wall of the outer ring to form fixing rings, two ends of the inner peripheral wall of the outer ring are respectively provided with a notch, the two fixing rings are in one-to-one correspondence with the two notches and are arranged in a matched insertion manner, slots are respectively arranged on the inner walls of the two notches, inserting rings extend towards the direction of adjacent slots on the outer walls of the two fixing rings, the two inserting rings are respectively arranged in a matched insertion manner with the corresponding slots, a first sealing lip and a second sealing lip extend towards the outer peripheral wall of the inner ring, and the first sealing lip and the second sealing lip are respectively arranged in an interference fit with the outer peripheral wall of the inner ring. The utility model solves the problems that the sealing structure of the bearing in the prior art has general sealing performance and is easy to fall off from the bearing when the bearing bears high load.

Description

Bearing sealing structure

Technical Field

The utility model relates to the technical field of bearings, in particular to a bearing sealing structure.

Background

The seal structure of bearing among the prior art adopts sealing ring seal structure usually, and this sealed effect is relatively poor, and the sealing ring can drop from the bearing when the bearing bears high-rated load, leads to the bearing to seal inefficacy for inside external impurity invades the bearing easily, leads to inside spare part of bearing to receive external impurity to corrode and impaired, leads to the bearing to become invalid.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a bearing sealing structure, which aims to solve the problems that the bearing sealing structure in the prior art has general sealing performance and is easy to fall off from a bearing when the bearing bears high load.

In order to achieve the above object, the present invention provides a bearing seal structure, comprising an outer ring, an inner ring and a rolling body, the outer ring is sleeved on the inner ring, the inner peripheral wall of the outer ring and the outer peripheral wall of the inner ring are both provided with roller paths for rolling of the rolling bodies, both sides of the roller path are provided with steel frameworks, both steel frameworks extend towards the inner peripheral wall of the outer ring to form fixing rings, fluting, two has all been seted up at outer lane internal perisporium both ends gu fixed ring sets up with two fluting one-to-ones and the cooperation of pegging graft, two all seted up the slot on the fluting inner wall, two all extend towards adjacent slot direction on the fixed ring outer wall and have insert the ring, two insert the ring and all set up with the slot grafting cooperation that corresponds, two the steel skeleton all extends towards inner circle periphery wall direction and has first seal lip and second seal lip, first seal lip and second seal lip all set up with inner circle periphery wall interference fit.

The technical scheme is adopted, and the method has the advantages that: solid fixed ring and fluting grafting cooperation setting in the above-mentioned technique, and first seal lip and second seal lip all set up with inner circle periphery wall interference fit, make the leakproofness of bearing can ensure, ensure that external impurity can not invade inside the bearing, the leakproofness of further improvement bearing, and the grafting cooperation of ring and slot makes the steel skeleton can not drop from the bearing when the bearing bears high-volume axial load in the above-mentioned technique, further guarantee that the sealing of bearing can not become invalid, avoid external impurity to invade the inside spare part of bearing damage and lead to the bearing inefficacy.

The utility model further provides that: two all seted up the spacing groove on the slot inner wall, two all extend towards adjacent spacing groove direction on the insert ring outer wall and have spacing arch, two spacing arch all sets up with the spacing groove grafting cooperation that corresponds separately.

The technical scheme is adopted, and the method has the advantages that: spacing arch is ensured with the grafting cooperation of spacing groove to insert the ring and can be firmly placed on the slot, has further improved the stability of framework of steel reinforcement on the bearing, can also ensure simultaneously that the ring of inserting can not break away from the slot when the bearing bears high-volume load, and further assurance framework of steel reinforcement can not follow the bearing and drop, avoids the inside bearing that leads to of external impurity erosion bearing to become invalid.

The utility model further provides that: the first sealing lip, the steel framework and the second sealing lip are combined in a Y-shaped arrangement, a sealing gap is formed among the first sealing lip, the outer peripheral wall of the inner ring and the second sealing lip, a first baffle ring is arranged on the outer side of the first sealing lip, a second baffle ring is arranged on the outer side of the second sealing lip, the first retaining ring and the second retaining ring are both made of shape memory alloy materials, the first retaining ring and the second retaining ring both have a first shape in a first temperature range, the first baffle ring and the second baffle ring both have a second shape in a second temperature range, the first baffle ring is bent in the first temperature range, the inner peripheral wall of the first baffle ring is in clearance fit with the outer peripheral wall of the first sealing lip, the second baffle ring is bent in a first temperature range, the peripheral wall of the second baffle ring is in clearance fit with the peripheral wall of the second sealing lip, the first retaining ring and the second retaining ring are both vertically arranged on the outer peripheral wall of the inner ring within the second temperature range.

The technical scheme is adopted, and the method has the advantages that: in the technology, the first retaining ring and the second retaining ring are both made of shape memory alloy materials and can be made of nickel-titanium memory alloy, the temperature of martensite reverse phase transformation completion of the nickel-titanium memory alloy is generally between 40 ℃ and 50 ℃, namely the phase transformation temperature of the nickel-titanium memory alloy is between 40 ℃ and 50 ℃, the temperature of the bearing can reach between 50 ℃ and 70 ℃ when the bearing works, the temperature range of the bearing is the second temperature range when the bearing does not work, the temperature range of the bearing reaches the first temperature range when the bearing works, the first retaining ring and the second retaining ring are in the first shape, namely the first retaining ring bends under the first temperature range, the inner peripheral wall of the first retaining ring is in clearance fit with the outer peripheral wall of the first sealing lip, the second retaining ring bends under the first temperature range, the outer peripheral wall of the second retaining ring is in clearance fit with the outer peripheral wall of the second sealing lip, the first retaining ring is in clearance fit with the first sealing lip, and the second retaining ring is in clearance fit with the second sealing lip, the method greatly improves the sealing performance of the first sealing lip and the second sealing lip, ensures that external impurities cannot enter the bearing through the first sealing lip and the second sealing lip, and simultaneously can effectively avoid the first sealing lip and the second sealing lip from being separated from the outer peripheral wall of the inner ring when the bearing bears high axial or radial load under the first form, further avoids the steel reinforcement framework from falling off from the bearing, and ensures that the bearing sealing cannot fail; and first fender ring and second keep off the ring and be the second form under the second temperature range, and this form makes first fender ring and second keep off the ring and all vertically set up on the inner circle periphery wall under the second temperature range, makes things convenient for operating personnel to install first fender ring and second and keeps off the ring.

The utility model further provides that: the sealing device is characterized in that a sealing ring is arranged on the sealing gap, and the outer peripheral wall of the sealing ring is in clearance fit with the inner peripheral wall of the first sealing lip and the inner peripheral wall of the second sealing lip respectively.

The technical scheme is adopted, and the method has the advantages that: the setting of sealing ring is very big has reduced the space in seal clearance, can also form the labyrinth groove with first lip and the cooperation of second lip simultaneously, and further reduction external impurity invades the inside possibility of bearing.

The utility model further provides that: an oil supplementing hole is formed in the steel framework, and a stud is in threaded connection with the oil supplementing hole.

The technical scheme is adopted, and the method has the advantages that: the oil supplementing hole is convenient for an operator to supplement grease to the inside of the bearing, and the arrangement of the screw column ensures that the oil supplementing hole can be in a completely sealed state when the bearing operates.

Drawings

FIG. 1 is a sectional view showing a state of use of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

fig. 3 is a cross-sectional view of the present invention in an unused state.

Detailed Description

The utility model provides a bearing sealing structure, which comprises an outer ring 1, an inner ring 2 and a rolling body 11, wherein the outer ring 1 is sleeved on the inner ring 2, raceways 21 for the rolling body 11 to roll are respectively arranged on the inner circumferential wall of the outer ring 1 and the outer circumferential wall of the inner ring 2, steel frameworks 3 are respectively arranged on both sides of the raceway 21, fixing rings 31 respectively extend towards the inner circumferential wall of the outer ring 1, slots 12 are respectively arranged at both ends of the inner circumferential wall of the outer ring 1, the two fixing rings 31 are respectively in one-to-one correspondence with the two slots 12 and are in inserted fit with the two slots 12, slots 121 are respectively arranged on the inner walls of the two slots 12, inserting rings 32 respectively extend towards the adjacent slots 121 on the outer walls of the two fixing rings 31, the two inserting rings 32 are respectively in inserted fit with the corresponding slots 121, and a first sealing lip 33 and a second sealing lip 34 respectively extend towards the outer circumferential wall of the inner ring 2 on both steel frameworks 3, the first sealing lip 33 and the second sealing lip 34 are arranged in interference fit with the outer peripheral wall of the inner ring 2, the inner walls of the two slots 121 are respectively provided with a limiting groove 122, the outer walls of the two insert rings 32 are respectively provided with a limiting protrusion 321 extending towards the direction of the adjacent limiting groove 122, the two limiting protrusions 321 are respectively arranged in a matched insertion manner with the corresponding limiting grooves 122, the first sealing lip 33, the steel framework 3 and the second sealing lip 34 are combined in a Y-shaped manner, a sealing gap 35 is formed among the first sealing lip 33, the outer peripheral wall of the inner ring 2 and the second sealing lip 34, the outer side of the first sealing lip 33 is provided with a first baffle ring 4, the outer side of the second sealing lip 34 is provided with a second baffle ring 5, the first baffle ring 4 and the second baffle ring 5 are both made of shape memory alloy materials, the first baffle ring 4 and the second baffle ring 5 both have a first shape in a first temperature range, first fender ring 4 and second keep off ring 5 and all have the second form under the second temperature range, first fender ring 4 is buckled under first temperature range and its inner peripheral wall and first seal lip 33 periphery wall clearance fit set up, second fender ring 5 is buckled under first temperature range and its outer peripheral wall and the clearance fit setting of second seal lip 34 periphery wall, first fender ring 4 and second fender ring 5 are all vertical setting under the second temperature range on 2 periphery walls of inner circle, be provided with sealing ring 36 on the

seal clearance

35, 36 periphery walls of sealing ring set up with the inner peripheral wall of first seal lip 33 and the clearance fit setting of second seal lip 34 inner peripheral wall respectively, oil supply hole 6 has been seted up on the steel skeleton 3, threaded connection has double-screw bolt 61 on the oil supply hole 6.

While there have been shown and described what are at present considered the fundamental principles and essential features of the utility model and its advantages, it will be understood by those skilled in the art that the utility model is not limited by the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. A bearing seal structure is characterized in that: including outer lane, inner circle and rolling element, outer lane cover establishes including circling, all set up on outer lane internal perisporium and the inner circle periphery wall and supply the rolling raceway of rolling element, the raceway both sides all are provided with the steel skeleton, two the steel skeleton all extends towards outer lane internal perisporium direction and has had solid fixed ring, the fluting has all been seted up at outer lane internal perisporium both ends gu fixed ring sets up with two fluting one-to-one and the cooperation of pegging graft, two the slot has all been seted up on the fluting inner wall, two gu all extend towards adjacent slot direction on the fixed ring outer wall and have inserted the ring, two it all sets up with the slot grafting cooperation of corresponding to insert the ring, two the steel skeleton all extends towards inner circle periphery wall direction and has first seal lip and second seal lip, first seal lip and second seal lip all set up with inner circle periphery wall interference fit.

2. A bearing seal structure according to claim 1, wherein: two all seted up the spacing groove on the slot inner wall, two all extend towards adjacent spacing groove direction on the insert ring outer wall and have spacing arch, two spacing arch all sets up with the spacing groove grafting cooperation that corresponds separately.

3. A bearing seal structure according to claim 1, wherein: the first sealing lip, the steel framework and the second sealing lip are combined in a Y-shaped arrangement, a sealing gap is formed among the first sealing lip, the outer peripheral wall of the inner ring and the second sealing lip, a first baffle ring is arranged on the outer side of the first sealing lip, a second baffle ring is arranged on the outer side of the second sealing lip, the first retaining ring and the second retaining ring are both made of shape memory alloy materials, the first retaining ring and the second retaining ring both have a first shape in a first temperature range, the first baffle ring and the second baffle ring both have a second shape in a second temperature range, the first baffle ring is bent in the first temperature range, the inner peripheral wall of the first baffle ring is in clearance fit with the outer peripheral wall of the first sealing lip, the second baffle ring is bent in a first temperature range, the peripheral wall of the second baffle ring is in clearance fit with the peripheral wall of the second sealing lip, the first retaining ring and the second retaining ring are both vertically arranged on the outer peripheral wall of the inner ring within the second temperature range.

4. A bearing seal structure according to claim 3, wherein: the sealing device is characterized in that a sealing ring is arranged on the sealing gap, and the outer peripheral wall of the sealing ring is in clearance fit with the inner peripheral wall of the first sealing lip and the inner peripheral wall of the second sealing lip respectively.

5. A bearing seal structure according to claim 1, wherein: an oil supplementing hole is formed in the steel framework, and a stud is in threaded connection with the oil supplementing hole.