CN211599282U

CN211599282U - Cutting roller supporting self-aligning roller bearing

Info

Publication number: CN211599282U
Application number: CN201922046891.5U
Authority: CN
Inventors: 田锡生
Original assignee: Jiangsu World Plant Protecting Machinery Co Ltd
Current assignee: Jiangsu World Plant Protecting Machinery Co Ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-09-29
Anticipated expiration: 2029-11-25

Abstract

The utility model relates to the technical field of bearings, in particular to a cutting roll supporting self-aligning roller bearing, which comprises a bearing seat, an outer ring, an inner ring, a large round nut and a boss, wherein the boss is arranged in a positioning hole of a frame; the big round nut and the boss are respectively provided with a groove, a second dustproof ring is arranged in the groove, a rubber sealing ring is arranged between the groove and the inner ring, the second dustproof ring is in contact with one end, located in the groove, of the rubber sealing ring, a gap is formed at the other end of the second dustproof ring, a first dustproof ring is arranged in the gap, and the other end of the first dustproof ring is in contact with the inner ring; a plurality of thrust grooves are uniformly distributed on the large round nut; an oil filling hole is formed in the bearing seat and is matched with an interface of the electric grease pump. The utility model discloses can prevent that the bearing frame from sliding and adjustable axial internal clearance, adopt two stop screw to prevent that the great circle nut is not hard up, rubber seal both can prevent that the grease from oozing the oil storage storehouse, can prevent again that the grease from oozing from the clearance between two dust rings.

Description

Cutting roller supporting self-aligning roller bearing

Technical Field

The utility model relates to a bearing technical field, in particular to cutting roller supports aligning roller bearing.

Background

When the branch grinder works, due to the specific physical properties of branches, the cutting roller rotating at high speed in the grinding (slicing) process is subjected to vibration alternating load, and the reliability and the reasonability of the supporting bearings at the two ends of the cutting roller directly influence the working stability and the economical efficiency of the machine tool.

Chinese patent publication No. CN106763170A, publication No. 2017.05.31, discloses a self-aligning roller bearing with a seat, but it has the following drawbacks:

(1) the bearing is fastened on the frame only by four bolts, but the bearing can not be centered stably due to the fact that certain or certain fastened bolts are loosened after a long time because the bearing vibrates violently in the working process, and the bearing seat slides;

(2) axial clearance cannot be adjusted, and too large axial clearance can cause the roller bearing to be unstable in the working process and cause too high temperature rise;

(3) the big round nut is fixed only by one set screw, the hidden danger of loosening exists, and the service life of the bearing is influenced by overlarge axial clearance caused by the rotation of the big round nut after loosening;

(4) the elastic check ring is only positioned in the stop groove, and grease is easy to seep out from the gap between the two dustproof cover assemblies, so that leakage is caused, manual oiling is needed, and the operation is complicated.

SUMMERY OF THE UTILITY MODEL

The utility model provides an among the correlation technique bearing frame easily slide, can't adjust axial play, big nut have not hard up hidden danger and grease and ooze from the clearance of two dust cover subassemblies easily, provide a cutting roller and support aligning roller bearing.

In order to solve the technical problem, the utility model discloses a realize through following technical scheme: a cutting roll supporting self-aligning roller bearing comprises a bearing seat, an outer ring, an inner ring, a large round nut and a boss, wherein a roller bearing is installed between the outer ring and the inner ring, the bearing seat is sleeved on the outer side of the outer ring, the large round nut and the boss are respectively positioned on two sides of the inner ring, and the large round nut is fastened through two limiting screws; the boss is arranged in a positioning hole of the frame; the big round nut and the boss are respectively provided with a groove, a second dustproof ring is arranged in the groove, a rubber sealing ring is arranged between the groove and the inner ring, the second dustproof ring is in contact with one end, located in the groove, of the rubber sealing ring, a gap is formed at the other end of the second dustproof ring, a first dustproof ring is arranged in the gap, and the other end of the first dustproof ring is in contact with the inner ring; a plurality of thrust grooves are uniformly distributed on the large round nut; an oil filling hole is formed in the bearing seat and is matched with an interface of the electric grease pump.

Preferably, the number of the thrust grooves is 36.

As a preferred scheme, the two limit screws are symmetrically distributed, and a nylon gasket and a stop gasket are sleeved under the limit screws.

As a preferred scheme, the rubber sealing ring is Y-shaped and comprises a rubber sealing ring I part, a rubber sealing ring II part and a rubber sealing ring III part, the first dust ring and the second dust ring are both V-shaped, the first dust ring comprises a first dust ring I part and a first dust ring II part, and the second dust ring comprises a second dust ring I part and a second dust ring II part; second dust ring II portion is parallel and forms the space with II looks of rubber seal, first dust ring I position is in the space, II portions of first dust ring and inner circle mirror surface cooperation.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model has the advantages that the positioning holes are arranged on the frame and the lug is arranged in the frame, so that the bearing is reliable and stable in centering and the slippage caused by vibration during the bearing work can be effectively reduced;

(2) the axial clearance can be adjusted by arranging the thrust grooves, the number of the thrust grooves is set to 36, the adjustment range of the axial clearance can be reduced to 0.028mm at least, the requirements of more accurate and more detailed axial clearance can be met, the roller bearing can be aligned more controllably by the more reasonable axial clearance, the work is more stable, less heat is generated, and the service life is longer;

(3) the large round nut is locked by two limiting screws, so that the large round nut is not easy to loosen, the bearing coefficient of the limiting screws is about 66% of that of the prior art, and the safety coefficient is greatly improved;

(4) the rubber sealing ring has double protection effects, so that grease can be prevented from seeping out of the oil storage bin, and can also be prevented from seeping out of a gap between the two dustproof rings, the phenomenon of leakage of lubricating grease can be effectively inhibited, the environment is protected, and the maintenance cost of a user is lower; and the oil filler point is adapted with the interface of the electric grease pump, and the electric grease pump can be adopted to realize automatic oil feeding.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 2 according to the present invention.

In the figure:

1. bearing frame, 2, the outer lane, 3, the inner circle, 5, roller bearing, 6, the boss, 7, stop screw, 8, first dust ring, 801, first dust ring I portion, 802, first dust ring II portion, 9, the second dust ring, 901, second dust ring I portion, 902, second dust ring II portion, 10, rubber seal, 1001, rubber seal I portion, 1002, rubber seal II portion, 1003, rubber seal III portion, 11, the recess, 12, thrust groove, 13, the oil filler point, 14, the nylon packing ring, 15, the lock washer, 16, the frame.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 3, a cutting roll supporting self-aligning roller bearing comprises a bearing seat 1, an outer ring 2, an inner ring 3, a large round nut 5 and a boss 6, wherein a roller bearing 4 is installed between the outer ring 2 and the inner ring 3, the bearing seat 1 is sleeved on the outer side of the outer ring 2, the large round nut 5 and the boss 6 are respectively located on two sides of the inner ring 3, and the large round nut 5 is fastened through two limit screws 7; the boss 6 is arranged in a positioning hole of the frame 16; grooves 11 are formed in the large round nut 5 and the boss 6, a second dust ring 9 is installed in each groove 11, a rubber sealing ring 10 is installed between each groove 11 and the corresponding inner ring 3, the second dust ring 9 is in contact with one end, located in each groove 11, of the corresponding rubber sealing ring 10, a gap is formed at the other end of each second dust ring 9, a first dust ring 8 is installed in each gap, and the other end of the first dust ring 8 is in contact with the corresponding inner ring 3; a plurality of thrust grooves 12 are uniformly distributed on the large round nut 5; an oil filling hole 13 is formed in the bearing seat 1, and the oil filling hole 13 is matched with an interface of the electric grease pump.

In one embodiment, in order to meet the requirement of more accurate and more careful axial play, the number of the thrust grooves 12 is 36, the adjustment range of the axial play clearance can be reduced to 0.028mm at the minimum, the more reasonable axial play can enable the roller bearing to be aligned more controllably, the work is more stable, the heat generation is less, and the service life is longer.

In one embodiment, the limit screws 7 are symmetrically distributed, so that the two limit screws 7 are uniformly stressed, and the nylon gasket 14 and the stop gasket 15 are sleeved under the limit screws 7, wherein the nylon gasket 14 is made of a material with wear resistance and high impact toughness, so that the vibration absorption and anti-loosening effects are better.

In one embodiment, as shown in fig. 3, the rubber seal 10 is Y-shaped and includes a rubber seal i part 1001, a rubber seal ii part 1002, and a rubber seal iii part 1003, the first dust ring 8 and the second dust ring 9 are both V-shaped, the first dust ring 8 includes a first dust ring i part 801 and a first dust ring ii part 802, and the second dust ring 9 includes a second dust ring i part 901 and a second dust ring ii part 902; wherein, the first part 901 of the second dust ring is contacted with the first part 1001 of the rubber seal ring, one end of the third part 1003 of the rubber seal ring is contacted with the inner ring 3, the second part 902 of the second dust ring is parallel to the second part 1002 of the rubber seal ring and forms a gap, the first part 801 of the first dust ring is positioned in the gap, the second part 802 of the first dust ring is matched with the mirror surface of the inner ring 3, which can better lock grease, wherein the first dustproof ring 8 and the second dustproof ring 9 are made of 65Mn, the rubber sealing ring 10 is made of chloroprene rubber, at the same time, the rubber packing 10 can play a double protection role, which can prevent grease from seeping out of the oil storage bin, and can also prevent grease from seeping out of the gap between the first dust ring 8 and the second dust ring 9, therefore, the symmetrical dustproof ring structure can better store grease, properly center the center and compensate the manufacturing error of the frame, so that the cutting roller can run more reliably and stably; the good sealed oil storage structure greatly reduces the waste of lubricating grease and reduces the pollution to the environment.

The above is the preferred embodiment of the present invention, and the technical personnel in the field of the present invention can also change and modify the above embodiment, therefore, the present invention is not limited to the above specific embodiment, and any obvious improvement, replacement or modification made by the technical personnel in the field on the basis of the present invention all belong to the protection scope of the present invention.

Claims

1. The utility model provides a cutting roller supports aligning roller bearing, includes bearing frame (1), outer lane (2), inner circle (3), great circle nut (5) and boss (6), install roller bearing (4) between outer lane (2) and inner circle (3), the outside at outer lane (2) is established in bearing frame (1) cover, great circle nut (5) and boss (6) are located the both sides of inner circle (3) respectively, its characterized in that: the large round nut (5) is fastened through two limiting screws (7); the boss (6) is arranged in a positioning hole of the frame (16); grooves (11) are formed in the large round nut (5) and the boss (6), a second dust ring (9) is installed in each groove (11), a rubber sealing ring (10) is installed between each groove (11) and the corresponding inner ring (3), the second dust ring (9) is in contact with one end, located in each groove (11), of the corresponding rubber sealing ring (10), a gap is formed at the other end of each second dust ring, a first dust ring (8) is installed in each gap, and the other end of the first dust ring (8) is in contact with the corresponding inner ring (3); a plurality of thrust grooves (12) are uniformly distributed on the large round nut (5); an oil filling hole (13) is formed in the bearing seat (1), and the oil filling hole (13) is matched with an interface of the electric grease pump.

2. The cutting roll support self-aligning roller bearing according to claim 1, wherein: the number of the thrust grooves (12) is 36.

3. The cutting roll support self-aligning roller bearing according to claim 1, wherein: the two limit screws (7) are symmetrically distributed, and nylon washers (14) and stop washers (15) are sleeved under the limit screws (7).

4. The cutting roll support self-aligning roller bearing according to claim 1, wherein: the rubber sealing ring (10) is Y-shaped and comprises a rubber sealing ring I part (1001), a rubber sealing ring II part (1002) and a rubber sealing ring III part (1003), the first dust ring (8) and the second dust ring (9) are both V-shaped, the first dust ring (8) comprises a first dust ring I part (801) and a first dust ring II part (802), and the second dust ring (9) comprises a second dust ring I part (901) and a second dust ring II part (902); second dust ring II portion (902) and rubber seal II portion (1002) are parallel and form the space, I portion (801) of first dust ring are located the space, II portion (802) of first dust ring and inner circle (3) mirror surface cooperation.