CN215567398U

CN215567398U - Connecting structure of multi-row roller sealing bearing

Info

Publication number: CN215567398U
Application number: CN202122372262.9U
Authority: CN
Inventors: 李宏亮
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-01-18
Anticipated expiration: 2031-09-29

Abstract

The utility model discloses a connecting structure of a multi-row roller sealing bearing, and particularly relates to the technical field of sealing of multi-row roller sealing bearings. The utility model provides a multiseriate roller seal bearing's connection structure, including the connecting axle, the locating part, pull rod and multiseriate roller seal bearing, multiseriate roller seal bearing's inboard is personally submitted the conical surface, the connecting axle stretches into multiseriate roller seal bearing's inside and cooperatees with multiseriate roller seal bearing from multiseriate roller seal bearing's one end, multiseriate roller seal bearing's the other end and locating part contact, the one end of pull rod is passed the connecting axle and is connected with the locating part, the other end of pull rod is connected with top retaining member. The inner surface of the inner ring is a conical surface, so that the connecting shaft can be ensured to be in close contact with the inner ring, the connection tightness is ensured, the connecting shaft can be in close contact with the multi-row roller sealing bearing by arranging the limiting piece and the pull rod, the connection firmness is enhanced, and the integral structure is more compact.

Description

Connecting structure of multi-row roller sealing bearing

Technical Field

The utility model relates to the technical field of roller bearing connection, in particular to a connection structure of a multi-row roller seal bearing.

Background

The multi-row roller sealing bearing is used as a transmission core component of a three-roller star-shaped rolling mill, the sealing performance and the installation accuracy of the multi-row roller sealing bearing and a connecting shaft are critical to the three-roller star-shaped rolling mill, the rolling accuracy of the three-roller rolling mill and the service life of equipment are determined, at present, the three-roller star-shaped rolling mill bearing adopts a transmission double-row roller bearing, because the roller is required to be quickly disassembled, a trace gap exists between the bearing and a bearing hole, in the using process, the bearing inner hole and the shaft excircle slip field can occur due to overlarge rolling force, meanwhile, a framework sealing structure is adopted, the bearing is used for overhigh temperature after being used for a period of time, the sealing effect of cooling water and sundry water inlet bearings is poor frequently occurring in severe environment, the bearing is frequently damaged, and the production and working efficiency are seriously affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a connecting structure of a multi-row roller sealing bearing, which aims to solve the problem that the existing multi-row roller sealing bearing is not firm in connection and poor in sealing effect.

The technical scheme for solving the technical problems is as follows:

the utility model provides a multiseriate roller seal bearing's connection structure, it includes the connecting axle, the locating part, pull rod and multiseriate roller seal bearing, multiseriate roller seal bearing's inboard is personally submitted the conical surface, the connecting axle stretches into multiseriate roller seal bearing's inside and cooperatees with multiseriate roller seal bearing from multiseriate roller seal bearing's one end, multiseriate roller seal bearing's the other end and locating part contact, the one end of pull rod is passed the connecting axle and is connected with the locating part, the other end of pull rod is connected with top retaining member.

The beneficial effect who adopts above-mentioned scheme does: the connecting shaft and the multi-row roller sealing bearings are matched through the conical surface, the connection is tighter and firmer, meanwhile, the multi-row roller sealing bearings are sleeved on the connecting shaft, two ends of the pull rod are respectively connected with the limiting part and the jacking part, the jacking part is screwed tightly, the pull rod drives the connecting shaft to move, so that the connecting shaft is connected with the multi-row roller sealing bearings more tightly, and meanwhile, the whole structure between the connecting shaft and the multi-row roller sealing bearings is more compact.

Further, the limiting piece is in threaded connection with the pull rod.

The beneficial effect who adopts above-mentioned scheme does: the limiting part is contacted with the multi-row roller sealing bearings, and the limiting part is in threaded connection with the pull rod, so that the limiting part and the pull rod are conveniently connected.

Furthermore, the limiting piece is embedded in the connecting shaft and is in spline fit with the connecting shaft.

The beneficial effect who adopts above-mentioned scheme does: because the locating part contacts with the multi-row roller sealing bearing, and the locating part is embedded in the connecting shaft, the coaxiality between the multi-row roller sealing bearing and the connecting shaft is ensured through the locating part, the inclination in the matching process between conical surfaces is avoided, the locating part is connected with the connecting shaft through splines, when the locating part is connected with the pull rod, the locating part can rotate, and the locating part mainly plays a limiting role.

Furthermore, the multi-row roller sealing bearing comprises an outer ring, an inner ring and a rolling assembly, wherein a plurality of mounting grooves are formed in the outer surface of the inner ring, the inner surface of the inner ring is a conical surface, the rolling assembly comprises a retainer and rolling bodies, the number and the positions of the retainer correspond to the mounting grooves one to one, the retainer is arranged between the inner ring and the outer ring, the rolling bodies are sleeved on the retainer and embedded into the mounting grooves, and a sealing element is sleeved on one side of the inner ring.

Furthermore, a sealing element is arranged on one side, away from the limiting element, of the inner ring, the sealing element comprises a first sealing ring and a second sealing ring, the first sealing ring is sleeved on the inner ring, the second sealing ring is located on the outer side of one end of the first sealing ring, and the second sealing ring is vertically connected with the first sealing ring; a first convex ring and a second convex ring are arranged at one end of the second sealing ring, and sealing cavities are respectively formed between the first convex ring and the second convex ring and between the second convex ring and the first sealing ring; a gap is reserved between the other end of the second sealing ring and the outer ring, and the outer side face of the second convex ring is in contact with the outer ring.

The beneficial effect who adopts above-mentioned scheme does: the first sealing ring is in contact with the inner ring, the second sealing ring can seal a gap between the outer ring and the inner ring, the first convex ring and the second convex ring can better prevent iron oxide dust and other impurities from entering the bearing, the sealing element is set to be of the structure, the sealing element can be used under the conditions of high temperature and high speed, and the sealing element has good sealing performance and is simple to maintain.

Further, the length of the first sealing ring is greater than the length of the first and second raised rings.

Further, the sealing element is provided with a sealing cover matched with the sealing element, the sealing cover is provided with a third convex ring in sealing fit with the side wall of the sealing cavity, and the sealing cover is further provided with a groove matched with the first convex ring and the second convex ring.

The beneficial effect who adopts above-mentioned scheme does: the structure of the sealing cover is matched with the sealing piece, so that iron oxide dust and other impurities can be prevented from entering the sealing piece, and the sealing performance is further enhanced.

Further, the rolling bodies are cylindrical rollers.

The beneficial effect who adopts above-mentioned scheme does: the rolling bodies are cylindrical rollers which can bear radial load, have strong bearing capacity and can bear large impact.

The utility model has the following beneficial effects:

1. according to the utility model, the connecting shaft is driven to displace by the pull rod through screwing the jacking piece, so that the connecting shaft is contacted with the multi-row roller sealing bearings, the inner surface of the inner ring is a conical surface, the connecting shaft can be tightly contacted with the multi-row roller sealing bearings through the arrangement of the limiting piece and the pull rod, the connection firmness is enhanced, and the integral structure is more compact.

2. The second sealing ring can seal the gap between the outer ring and the inner ring, the first convex ring and the second convex ring can better prevent iron oxide dust and other impurities from entering the bearing, and the sealing element is of the structure which can be used under the conditions of high temperature and high speed, has good sealing performance and is simple to maintain.

Drawings

Fig. 1 is a schematic structural view of a connecting structure of a multi-row roller seal bearing of the present invention.

Fig. 2 is an exploded view of a multi-row roller seal bearing of the present invention.

Fig. 3 is an enlarged view of a portion a in fig. 2.

In the figure: 1-an outer ring; 2-inner ring; 3-a rolling component; 301-a cage; 302-rolling elements; 4-mounting grooves; 5-a seal; 501-a first seal ring; 502-a second seal ring; 503-a first bulge loop; 504-a second torus; 505-a sealed cavity; 6-a limiting part; 7-a pull rod; 8-sealing cover; 801-third bulge loop; 9-a connecting shaft; 10-multi-row roller seal bearing; 11-a top member.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.

Examples

Referring to fig. 1, a connecting structure of a multi-row roller seal bearing includes: the multi-row roller sealing bearing 10, the connecting shaft 9, the pull rod 7 and the locating part 6, the conical surface is personally submitted to the inboard of multi-row roller sealing bearing 10, the one end of connecting shaft 9 also is the conical surface and stretches into in multi-row roller sealing bearing 10 and is connected with multi-row roller sealing bearing 10, the pull rod 7 passes connecting shaft 9 and is connected with connecting shaft 9 sliding fit, the one end of pull rod 7 is connected with locating part 6, the other end of pull rod 7 is connected with ejector piece 11, locating part 6 and the contact of multi-row roller sealing bearing 10, and, locating part 6 and connecting shaft 9 have the clearance in the axis direction, can not block the displacement of connecting shaft 9 in the axis direction. The two ends of the pull rod 7 are respectively connected with the limiting part 6 and the jacking part 11, and the jacking part 11 can push the connecting shaft 9 to move in the multi-row roller sealing bearing 10, so that the connecting shaft 9 is tightly connected with the multi-row roller sealing bearing 10 through the extrusion force between the conical surfaces.

In the present embodiment, the tightening member 11 is a nut and is screwed to the tension rod 7, and by screwing the tightening member 11, a pressing force is generated between the plurality of rows of roller seal bearings 10 and the connecting shaft 9.

Referring to fig. 2 and 3, the multi-row roller seal bearing 10 includes an outer ring 1, a rolling assembly 3, and an inner ring 2, and the outer ring 1, the rolling assembly 3, and the inner ring 2 are connected in sequence from outside to inside. The rolling assembly 3 includes a cage 301 and rolling bodies 302, the cage 301 is disposed between the inner ring 2 and the outer ring 1, and the rolling bodies 302 are fitted over the cage 301. The outer side surface of the inner ring 2 is provided with a mounting groove 4 for placing the rolling body 302, the mounting groove is used for limiting the rolling body 302, and the inner side surface of the inner ring 2 is conical. In the present embodiment, the rolling elements 302 are cylindrical rollers, and the rolling elements 302 are configured as cylindrical rollers that can bear radial load, have high load-bearing capacity, and can also bear large impact.

The length of the inner ring 2 is greater than that of the outer ring 1, so that one end of the inner ring 2 extends out of the outer ring 1, one end of the inner ring 2 extending out of the outer ring 1 is close to the jacking piece 11, and one end of the inner ring 2 extending out of the outer ring 1 is sleeved with the sealing piece 5. The sealing element 5 comprises a first sealing ring 501 and a second sealing ring 502, the first sealing ring 501 is sleeved on the inner ring 2, the second sealing ring 502 is positioned at the outer side of one end of the first sealing ring 501, the joint of the first sealing ring 501 and the second sealing ring 502 is a right angle, one end of the second sealing ring 502 is provided with a first convex ring 503 and a second convex ring 504, and a sealing cavity 505 is respectively formed between the first convex ring 503 and the second convex ring 504 and between the second convex ring 504 and the first sealing ring 501; the outer side surface of the second convex ring 504 is in contact with the outer ring 1, the second sealing ring 502 radially plays a role in blocking a gap between the outer ring 1 and the inner ring 2, and a gap is reserved between the other end of the second sealing ring 502 and the outer ring 1, so that the contact between the sealing element 5 and the outer ring 1 can be reduced, the friction force is reduced, and the rotation of the sealing element 5 cannot be excessively hindered. The whole structure of the sealing element 5 is of a labyrinth type, and the sealing element 5 can be used under the conditions of high temperature and high speed, and has good sealing performance and simple maintenance.

The sealing element 5 is provided with a sealing cover 8 matched with the sealing element 5, the sealing cover 8 is provided with a third convex ring 801 in sealing fit with the side wall of the sealing cavity 505, the sealing cover 8 is further provided with a groove matched with the first convex ring 503 and the second convex ring 504, the third convex ring 801 is embedded in the sealing cavity 505, the structure of the sealing cover 8 is matched with the sealing element 5, iron oxide dust and other impurities are prevented from entering the sealing element 5, and therefore sealing performance is enhanced.

The connecting shaft 9 is provided with a through hole along the axis, one end of the connecting shaft 9, which is in contact with the limiting part 6, is provided with a groove, the limiting part 6 is provided with a boss, the limiting part 6 is embedded in the inner ring 2 and is also embedded in the connecting shaft 9, the limiting part 6 is in spline fit with the connecting shaft 9, the limiting part and the connecting shaft are in spline connection, when the limiting part is connected with a pull rod, the limiting part can rotate, and the limiting part mainly plays a limiting role. The multi-row roller sealing bearing 10 and the connecting shaft 9 have a guiding function, so that the axes of the multi-row roller sealing bearing 10 and the connecting shaft 9 are overlapped and do not deviate.

And (3) connecting: 1) sleeving a plurality of rows of roller sealing bearings 10 on a connecting shaft 9, enabling a pull rod 7 to penetrate through a through hole of the connecting shaft 9 and be connected with a limiting piece 6, enabling the limiting piece 6 to be embedded into a groove of the connecting shaft 9 and an inner ring 2 of the plurality of rows of roller sealing bearings 10, enabling the limiting piece 6 to be in contact with the end face of the inner ring 2, enabling the other end of the pull rod 7 to be connected with a jacking piece 11, and screwing the jacking piece 11 to enable the connecting shaft 9 to be in tight contact with the inner ring 2; 2) the sealing element 5 is sleeved on one end of the inner ring 2 far away from the limiting element 6, and then the sealing cover 8 is arranged on the sealing element 5.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A connecting structure of a multi-row roller seal bearing, comprising: connecting axle (9), locating part (6), pull rod (7) and multiseriate roller seal bearing (10), the inboard of multiseriate roller seal bearing (10) is personally submitted the conical surface, connecting axle (9) are followed the one end of multiseriate roller seal bearing (10) is stretched into the inside of multiseriate roller seal bearing (10) and with multiseriate roller seal bearing (10) cooperate, the other end of multiseriate roller seal bearing (10) with locating part (6) contact, the one end of pull rod (7) is passed connecting axle (9) and with locating part (6) are connected, the other end of pull rod (7) is connected with top retaining member (11).

2. The multi-row roller seal bearing connecting structure according to claim 1, wherein the retainer (6) is screw-coupled to the tie rod (7).

3. The multi-row roller seal bearing connection structure according to claim 2, wherein the stopper (6) is embedded in the connecting shaft (9), and the stopper (6) is spline-fitted to the connecting shaft (9).

4. The multi-row roller seal bearing connection structure according to claim 1, wherein the multi-row roller seal bearing comprises an outer ring (1), an inner ring (2) and rolling elements (3), the outer surface of the inner ring (2) is provided with a plurality of mounting grooves (4), the inner surface of the inner ring (2) is a conical surface, the rolling elements (3) comprise a retainer (301) and rolling elements (302), the number and the positions of the retainer (301) correspond to the mounting grooves (4) one by one, the retainer (301) is arranged between the inner ring (2) and the outer ring (1), the rolling elements (302) are sleeved on the retainer (301) and embedded in the mounting grooves (4), and one side of the inner ring (2) is sleeved with a sealing element (5).

5. The connecting structure of the multi-row roller seal bearing according to claim 4, characterized in that a sealing element (5) is arranged on one side of the inner ring (2) away from the limiting member (6), the sealing element (5) comprises a first sealing ring (501) and a second sealing ring (502), the first sealing ring (501) is sleeved on the inner ring (2), the second sealing ring (502) is positioned outside one end of the first sealing ring (501), and the second sealing ring (502) is vertically connected with the first sealing ring (501); a first convex ring (503) and a second convex ring (504) are arranged at one end of the second sealing ring (502), and a sealing cavity (505) is respectively formed between the first convex ring (503) and the second convex ring (504) and between the second convex ring (504) and the first sealing ring (501); a gap is reserved between the other end of the second sealing ring (502) and the outer ring (1), and the outer side surface of the second convex ring (504) is in contact with the outer ring (1).

6. The multi-row roller seal bearing connecting structure according to claim 5, wherein the length of the first seal ring (501) is greater than the lengths of the first and second convex rings (503, 504).

7. The multi-row roller seal bearing connecting structure according to claim 6, wherein the seal member (5) is provided with a seal cover (8) fitted to the seal member (5), the seal cover (8) is provided with a third projecting ring (801) sealingly fitted to the side wall of the seal chamber (505), and the seal cover (8) is further provided with a groove fitted to the first projecting ring (503) and the second projecting ring (504).

8. The multi-row roller seal bearing connecting structure according to any one of claims 4 to 7, wherein the rolling elements (302) are cylindrical rollers.