Large-torque dustproof bearing

Abstract

The utility model provides a large-torque dustproof bearing, which relates to the technical field of large-torque bearings and comprises an outer ring, the top and the bottom of the outer ring are respectively provided with a cover body mechanism, the inner side of the outer ring is provided with an inner ring, a retainer is arranged between the outer ring and the inner ring, a rolling body is arranged in the retainer, and the rolling body is arranged in the outer ring. An inner rolling groove is formed in the outer side of the inner ring, an outer rolling groove is formed in the inner side of the outer ring, the rolling body is clamped between the inner rolling groove and the outer rolling groove, and dustproof mechanisms are arranged between the outer ring and the inner ring and located at the top and the bottom of the retainer. The dustproof mechanism is arranged for closing and sealing the space between the outer ring and the inner ring, dust is prevented from falling between the outer ring and the inner ring, the dust is further prevented from entering the inner rolling groove and the outer rolling groove, the rolling smoothness degree of the rolling body is not affected, deep dust prevention between the outer ring and the inner ring is achieved, and the service life of the rolling body is prolonged. Fine dust is prevented from entering the space between the outer ring and the inner ring to affect normal use.

Description

TECHNICAL FIELD

[0001] The utility model relates to big torsion torque bearing technical field, specifically, relate to a big torsion torque dustproof bearing. BACKGROUND

[0002] Bearing is a kind of commonly used parts in machinery, main function is the support mechanical rotator, reduce the resistance received in its movement process, and ensure its rotation accuracy. Big torsion torque bearing is a kind of special bearing that can bear large torsion torque load.

[0003] One of the Chinese patents of Chinese patent application 202420513086.7 discloses a dustproof bearing, and its technical scheme points are: including inner ring, outer ring and a plurality of balls, the inner ring and the outer ring are provided with a shielding cover, the shielding cover includes inner cover and outer cover, the inner ring is formed with embedding groove one for embedding the inner cover, the outer ring is formed with embedding groove two for embedding the outer cover, the inner cover is formed with two contact parts one, the outer cover is provided with contact part two, the contact part one and the contact part two are in contact, and the space for the contact part two is formed between the two contact parts one. The dustproof bearing of the utility model, dust can be guided under the airflow generated by scraping convex rotation, reduce the probability of dust passing through the gap between contact part one and contact part two, so that the dustproof effect of bearing can be improved.

[0004] Big torsion torque bearing is generally used for dust prevention by setting dust cover on its top and bottom, but the sealing property of dust cover is poor, so dust or dust in the air can still enter the inside of big torsion torque bearing, which affects the use performance of bearing, especially in the environment with high dust content, which greatly affects the bearing. UTILITY MODEL CONTENTS

[0005] The main purpose of the utility model is to provide a big torsion torque dustproof bearing, which can effectively solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is:

[0007] A big torsion torque dustproof bearing, comprising an outer ring, a cover body mechanism is arranged on the top and bottom of the outer ring, an inner ring is arranged on the inner side of the outer ring, a retainer is arranged between the outer ring and the inner ring, a rolling body is arranged in the inside of the retainer, an inner rolling groove is formed on the outer side of the inner ring, an outer rolling groove is formed on the inner side of the outer ring, the rolling body is clamped between the inner rolling groove and the outer rolling groove, and a dustproof mechanism is arranged between the outer ring and the inner ring and located at the top and bottom of the retainer.

[0008] Preferably, the cover body mechanism comprises a dust cover, mounting grooves are formed on the top and bottom of the outer ring, the dust cover is fixedly installed on one side of the inside of the mounting groove, and a sealing ring is fixedly installed in the inside of the dust cover.

[0009] Preferably, the size of the bottom of the dust cover and the size of the inside of the mounting groove are matched, and the inner diameter of the sealing ring is the same as the inner diameter of the inner ring.

[0010] Preferably, the dustproof mechanism comprises a closing ring, the closing ring is clamped between the outer ring and the inner ring, a first O-shaped sealing ring and a second O-shaped sealing ring are fixedly installed on the inner side of the closing ring respectively, two sealing grooves are formed on the outer side of the inner ring and located at the top and the bottom of the inner rolling groove respectively, the first O-shaped sealing ring and the second O-shaped sealing ring are clamped in the inside of the sealing grooves and are in contact with the inner walls of the sealing grooves respectively, and the closing ring is slidably connected with the top and the bottom of the retainer respectively.

[0011] Preferably, a plurality of clamping mechanisms are fixedly installed on the outer side of the closing ring in a uniform distribution, and a plurality of clamping grooves are formed on the inner side of the top of the outer ring in a uniform distribution.

[0012] Preferably, the clamping mechanism comprises a side block a, the side block a is fixedly installed on the outer side of the closing ring, a hollow groove b is formed on the two sides of the side block a, a spring c is fixedly installed in the inside of the hollow groove b, a connecting plate d is fixedly installed on one side of the spring c, a check block e is fixedly installed on the other side of the connecting plate d, check grooves f are formed on the two sides of the inner side of the clamping groove, and the arc surface of the check block e is clamped in the inside of the check grooves f.

[0013] Preferably, a plurality of ball grooves are formed on the side of the closing ring close to the retainer in a uniform distribution, and balls are movably connected in the inside of the ball grooves, and sliding grooves are formed on the top and the bottom of the retainer, and the surfaces of the balls are located on the inner sides of the sliding grooves.

[0014] Preferably, the materials of the first O-shaped sealing ring and the second O-shaped sealing ring are polytetrafluoroethylene.

[0015] Compared with the prior art, the utility model has the advantages of the following beneficial effects:

[0016] The cover body mechanism is arranged to preliminarily prevent dust from falling between the outer ring and the inner ring, the dustproof mechanism is arranged to seal the outer ring and the inner ring, dust is prevented from falling between the outer ring and the inner ring, dust is prevented from entering the inside of the inner rolling groove and the outer rolling groove, the rolling smoothness of the rolling body is affected, and the outer ring and the inner ring are deeply dustproofed, fine dust is prevented from entering between the outer ring and the inner ring, and normal use is affected. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic view of the overall structure in the utility model;

[0018] Figure 2It is a cover body mechanism structure perspective view of the utility model;

[0019] Figure 3 It is a section structure perspective view of the utility model;

[0020] Figure 4 It is a clamping mechanism local structure perspective view of the utility model;

[0021] Figure 5 It is an inner ring structure perspective view of the utility model;

[0022] Figure 6 It is an outer ring structure perspective view of the utility model;

[0023] Figure 7 It is a clamping mechanism structure perspective view of the utility model.

[0024] In the drawing: 1, outer ring; 2, cover body mechanism; 201, dust cover; 202, sealing ring; 203, installation groove; 3, dustproof mechanism; 301, closed ring; 302, clamping mechanism; 302a, side block; 302b, empty slot; 302c, spring; 302d, connecting plate; 302e, bump block; 302f, bump slot; 303, first O-shaped sealing ring; 304, second O-shaped sealing ring; 305, sealing groove; 306, ball groove; 307, ball; 308, sliding slot; 309, clamping slot; 4, inner ring; 5, retainer; 6, rolling body; 7, inner rolling groove; 8, outer rolling groove. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] As Figure 1 -6 shows a large torque dustproof bearing, which comprises an outer ring 1, the top and bottom of the outer ring 1 are provided with cover body mechanisms 2, the inner side of the outer ring 1 is provided with an inner ring 4, the outer ring 1 and the inner ring 4 are provided with retainers 5, the inside of the retainer 5 is provided with rolling bodies 6, the outer side of the inner ring 4 is provided with an inner rolling groove 7, the inner side of the outer ring 1 is provided with an outer rolling groove 8, the rolling body 6 is clamped between the inner rolling groove 7 and the outer rolling groove 8, the top and bottom between the outer ring 1 and the inner ring 4 and located at the retainer 5 are provided with dustproof mechanisms 3.

[0027] The effect achieved by the above components is that the cover mechanism 2 is used to preliminarily prevent dust from falling between the outer ring 1 and the inner ring 4, the dust prevention mechanism 3 is used to seal and prevent dust from falling between the outer ring 1 and the inner ring 4, thereby preventing dust from entering the inner rolling groove 7 and the outer rolling groove 8, affecting the smoothness of the rolling body 6, and preventing fine dust from entering between the outer ring 1 and the inner ring 4, affecting normal use.

[0028] As shown in Figure 2 , the cover mechanism 2 includes a dust cover 201, the top and bottom of the outer ring 1 are provided with mounting grooves 203, one side of the dust cover 201 is fixedly installed in the mounting groove 203, and a sealing ring 202 is fixedly installed in the dust cover 201.

[0029] The effect achieved by the above components is that the dust cover 201 is used to prevent dust from falling on the top and bottom of the outer ring 1 and the inner ring 4, and preliminarily prevent dust from falling between the outer ring 1 and the inner ring 4.

[0030] As shown in Figure 2 , the size of the bottom of the dust cover 201 is matched with the size of the inside of the mounting groove 203, and the inner diameter of the sealing ring 202 is the same as the inner diameter of the inner ring 4.

[0031] The effect achieved by the above components is that the size of the dust cover 201 and the mounting groove 203 is matched to reinforce the stability of the installation of the bottom of the dust cover 201 in the mounting groove 203, improve the stability of the dust cover 201 during use, and the inner diameter of the sealing ring 202 is the same as the inner diameter of the inner ring 4 to make the inner side of the sealing ring 202 closely fit the surface of the shaft, thereby improving the dust prevention effect.

[0032] As shown in Figure 3 -5, the dust prevention mechanism 3 includes a sealing ring 301, the sealing ring 301 is clamped between the outer ring 1 and the inner ring 4, the inner side of the sealing ring 301 is fixedly installed with a first O-shaped sealing ring 303 and a second O-shaped sealing ring 304, respectively, two sealing grooves 305 are provided on the outer side of the inner ring 4 and located at the top and bottom of the inner rolling groove 7, the first O-shaped sealing ring 303 and the second O-shaped sealing ring 304 are clamped in the sealing grooves 305 and in contact with the inner walls of the sealing grooves 305, respectively, and the sealing ring 301 is slidingly connected with the top and bottom of the retainer 5, respectively.

[0033] The effects achieved by the above components are that: the closing ring 301 is arranged to close the outer ring 1 and the inner ring 4, preventing dust from falling between the outer ring 1 and the inner ring 4 in large quantities, and further preventing dust from entering the inside of the inner rolling groove 7 and the outer rolling groove 8, affecting the smoothness of the rolling body 6. The first O-shaped sealing ring 303 and the second O-shaped sealing ring 304 achieve the effect of double sealing, further reducing the amount of dust entering the inside of the inner rolling groove 7 and the outer rolling groove 8 through the gap, and improving the dustproof effect.

[0034] As shown in Figure 4 and Figure 6 , the outer side of the closing ring 301 is fixedly installed with uniformly distributed clamping mechanisms 302, and the inner side of the top of the outer ring 1 is provided with uniformly distributed clamping grooves 309, and the clamping mechanisms 302 are clamped in the inside of the clamping grooves 309.

[0035] The effects achieved by the above components are that: the clamping mechanisms 302 and the clamping grooves 309 cooperate with each other to facilitate the installation and removal of the closing ring 301, and the closing ring 301 is convenient to replace. Since the closing ring 301 is fixedly connected with the first O-shaped sealing ring 303 and the second O-shaped sealing ring 304, it is convenient to replace the first O-shaped sealing ring 303 and the second O-shaped sealing ring 304 which are severely worn, and the sealing performance between the first O-shaped sealing ring 303 and the sealing groove 305 and the sealing groove 305 is ensured.

[0036] As shown in Figure 6 , the clamping mechanism 302 includes a side block 302a fixedly installed on the outer side of the closing ring 301, and the two sides of the side block 302a are provided with a hollow groove 302b, and the inside of the hollow groove 302b is fixedly installed with a spring 302c, and one side of the spring 302c is fixedly installed with a connecting plate 302d, and the other side of the connecting plate 302d is fixedly installed with a check block 302e, and the two sides of the inside of the clamping groove 309 are provided with a check groove 302f, and the arc surface of the check block 302e is clamped in the inside of the check groove 302f.

[0037] The effects achieved by the above components are that: the spring 302c is arranged to pop the connecting plate 302d, so that the connecting plate 302d pushes the check block 302e and clamps the arc surface of the check block 302e in the inside of the check groove 302f, which plays a fixed role on the closing ring 301, and facilitates the installation and removal of the closing ring 301, and further facilitates the replacement of the closing ring 301.

[0038] As shown in Figure 2 , the side of the closing ring 301 close to the retainer 5 is provided with uniformly distributed ball grooves 306, the inside of the ball grooves 306 is movably connected with balls 307, the top and bottom of the retainer 5 are provided with sliding grooves 308, and the surface of the ball 307 is located inside the sliding groove 308.

[0039] The effect achieved by the above-mentioned components is that the ball groove 306 is arranged to mount and limit the balls 307, so that the cage 5 rotates in use, thereby reducing the wear between the closed ring 301 and the cage 5 and improving the service life of the closed ring 301.

[0040] As shown in Figure 3 The first O-ring 303 and the second O-ring 304 are made of polytetrafluoroethylene.

[0041] The effect achieved by the above-mentioned components is that the first O-ring 303 and the second O-ring 304 are made of polytetrafluoroethylene to reduce the friction coefficient of the first O-ring 303 and the second O-ring 304, because the friction coefficient of polytetrafluoroethylene is extremely small, which can greatly reduce the wear degree in use and improve the sealing performance.

[0042] The working principle of the large-torque dustproof bearing is as follows:

[0043] The dust cover 201 prevents dust from falling between the outer ring 1 and the inner ring 4, and the top and bottom of the outer ring 1 and the inner ring 4 are prevented from being dusted;

[0044] The closed ring 301 closes the outer ring 1 and the inner ring 4 to prevent dust from falling between the outer ring 1 and the inner ring 4, and further prevent dust from entering the inner rolling groove 7 and the outer rolling groove 8, which affects the smoothness of the rolling body 6, and the first O-ring 303 and the second O-ring 304 are arranged to achieve the effect of double sealing, which further reduces the dust entering the inner side of the inner rolling groove 7 and the outer rolling groove 8 through the gap, and improves the dustproof effect.

[0045] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not a limitation on the embodiments of the present application. For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description, and all the embodiments cannot be exhausted here, and any changes or variations derived from the technical solutions of the present application still fall within the protection scope of the present application.

Claims

1. A large torque dustproof bearing comprising an outer ring (1), characterized in that: The top and bottom of the outer ring (1) are provided with cover mechanisms (2), the inner side of the outer ring (1) is provided with an inner ring (4), a retainer (5) is arranged between the outer ring (1) and the inner ring (4), the inside of the retainer (5) is provided with a rolling body (6), the outer side of the inner ring (4) is provided with an inner rolling groove (7), the inner side of the outer ring (1) is provided with an outer rolling groove (8), the rolling body (6) is clamped between the inner rolling groove (7) and the outer rolling groove (8), and the dustproof mechanisms (3) are arranged between the outer ring (1) and the inner ring (4) and located at the top and bottom of the retainer (5).

2. A large torque dust-proof bearing according to claim 1, characterized in that: The cover mechanism (2) comprises a dust cover (201), the top and bottom of the outer ring (1) are provided with mounting grooves (203), and one side of the dust cover (201) is fixedly installed in the mounting grooves (203).

3. A large torque dust-proof bearing according to claim 2, characterized in that: The size of the bottom of the dust cover (201) is matched with the size of the inside of the mounting groove (203), and the inner diameter of the sealing ring (202) is the same as the inner diameter of the inner ring (4).

4. A large torque dust-proof bearing according to claim 1, characterized in that: The dustproof mechanism (3) comprises a closed ring (301), the closed ring (301) is clamped between the outer ring (1) and the inner ring (4), the inner side of the closed ring (301) is fixedly installed with a first O-shaped sealing ring (303) and a second O-shaped sealing ring (304) respectively, the outer side of the inner ring (4) and located at the top and bottom of the inner rolling groove (7) are provided with two sealing grooves (305), the first O-shaped sealing ring (303) and the second O-shaped sealing ring (304) are clamped in the sealing grooves (305) respectively and are in contact with the inner walls of the sealing grooves (305), and the closed ring (301) is slidably connected with the top and bottom of the retainer (5) respectively.

5. A large torque dust-proof bearing according to claim 4, characterized in that: The outer side of the closed ring (301) is fixedly installed with uniformly distributed clamping mechanisms (302), and the inner side of the top of the outer ring (1) is provided with uniformly distributed clamping grooves (309).

6. A large torque dust-proof bearing according to claim 5, characterized in that: The clamping mechanism (302) comprises a side block (302a), the side block (302a) is fixedly installed on the outer side of the closed ring (301), both sides of the side block (302a) are provided with a hollow groove (302b), the hollow groove (302b) is fixedly installed with a spring (302c) in the inside, one side of the spring (302c) is fixedly installed with a connecting plate (302d), the other side of the connecting plate (302d) is fixedly installed with a check block (302e), both sides of the inner side of the clamping groove (309) are provided with a check groove (302f), and the curved surface of the check block (302e) is clamped in the inside of the check groove (302f).

7. A large torque dust-proof bearing according to claim 4, characterized in that: The side close to the retainer (5) of the closed ring (301) is provided with uniformly distributed ball grooves (306), the inside of the ball grooves (306) is movably connected with balls (307), and the top and bottom of the retainer (5) are provided with sliding grooves (308). The surface of the ball (307) is located on the inner side of the sliding groove (308).

8. A large torque dust-proof bearing according to claim 4, characterized in that: The material of the first O-ring (303) and the second O-ring (304) is polytetrafluoroethylene.

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