High-bearing-capacity mute bearing

Abstract

The utility model discloses a high bearing capacity silent bearing, specifically relates to bearing technical field, including bearing subassembly, the front and back of bearing subassembly are both provided with sealed silent subassembly, the bearing subassembly includes outer ring, outer ring surface front and back of outer ring surface are both fixedly sleeved with first flange ring, the outer ring surface front and back of outer ring surface are both connected with first flange ring, and the first flange ring is connected with a second flange ring. According to the high-bearing mute bearing, through multiple cooperation of the sealing cover, the sealing ring, the sealing circular groove and the silencing pad, dust, impurities and the like are effectively prevented from entering the bearing, abrasion of the bearing is reduced, and the service life of the bearing is prolonged; meanwhile, noise reduction pads on the back face of the sealing cover and the outer ring face of the sealing ring and a mute ring on one end face of the sealing ring can effectively absorb and weaken noise generated in the operation process of the bearing, a quiet working environment is created, a lubricating agent can be conveniently injected into the bearing through an injection pipe, the bearing can be conveniently maintained, and the service life of the bearing is prolonged. The service life of the bearing is further prolonged.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, specifically a high load-bearing silent bearing. Background Technology

[0002] Bearings are an important component in modern mechanical equipment. Their main function is to support rotating mechanical parts, reduce the coefficient of friction during movement, and ensure rotational accuracy. In some equipment with high requirements for load-bearing capacity and quiet operation, traditional bearings often fall short of the requirements.

[0003] For example, Chinese patent application number 202321881386.2 discloses a high-load-bearing silent bearing, including an inner ring and an outer ring. A sealing gasket, a cage, and multiple rollers distributed on the cage are provided between the inner and outer rings. The inner diameter of the inner ring is 35mm, the outer diameter of the outer ring is 90mm, and the width of both the inner and outer rings is 14mm. The bearing is characterized by having silent gaskets on both sides of the outer ring. Compared to ordinary 6007 bearings, this high-load-bearing silent bearing has an increased outer ring diameter of 90mm, allowing it to directly meet specific customer needs. It eliminates the need for an additional bushing during bearing installation, simplifying the installation process and shortening installation time. Direct mating between the bearing and equipment reduces misalignment, effectively reducing vibration and noise and extending bearing life. The silent gaskets further improve the bearing's quietness performance. Furthermore, its reasonable design, simple structure, low noise, wear resistance, and long service life make it suitable for large-scale promotion.

[0004] However, during use, while the resin material reduces friction to some extent, this bearing performs poorly in terms of elastic sealing and long-term wear resistance. In actual operation, it is difficult for the bearing's silencer ring to fit tightly against the relevant components, and after prolonged use, wear easily leads to a decline in sealing and noise reduction performance. Poor sealing performance allows dust and impurities to easily enter the bearing, accelerating wear and reducing its load-bearing capacity and service life. It also generates significant noise due to wear.

[0005] Meanwhile, during bearing operation, as the lubricating oil decreases, the lubrication effect reduces, and the noise generated also increases. Therefore, it is necessary to add lubricating oil again. However, this bearing does not have a lubrication channel, so adding lubricating oil is inconvenient. Utility Model Content

[0006] The purpose of this invention is to provide a high load-bearing, silent bearing to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high load-bearing silent bearing, comprising a bearing assembly, wherein sealing and silent components are provided on both the front and back sides of the bearing assembly;

[0008] The bearing assembly includes an outer ring, and a flange ring is fixedly fitted onto both the front and rear ends of the outer ring.

[0009] The sealing and silencing assembly includes a sealing cover, a second flange ring fixedly fitted onto the outer circumference of the sealing cover, multiple fixing bolts threaded into the front of the second flange ring, a lock nut threaded onto one end of each fixing bolt, an injection pipe fixedly fitted into the top of the front of the sealing cover, a cap threaded onto one end of the injection pipe, a sealing ring fixedly bonded to the center of the back of the sealing cover, a sound-absorbing pad fixedly bonded to both the back of the sealing cover and the outer circumference of the sealing ring, and a silencing ring fixedly bonded to one end of the sealing ring.

[0010] Preferably, an inner bearing ring is provided inside the outer ring, and a ball groove is provided between the outer ring and the inner bearing ring.

[0011] Preferably, bearing balls are rolled and installed in the ball groove, and sealing grooves are provided on both the front and back sides of the inner bearing ring.

[0012] Preferably, the sealing ring is located within the sealing groove, and the outer wall of the sealing ring and the inner wall of the sealing groove are in clearance fit.

[0013] Preferably, both of the first flange rings have multiple fixing threaded holes on their front sides, and the multiple fixing threaded holes are distributed in a ring on the front side of the first flange ring.

[0014] Preferably, the two No. 1 flange rings and the two No. 2 flange rings correspond one-to-one, with one end face of the No. 1 flange ring and the No. 2 flange ring tightly attached together, and the plurality of fixing bolts correspond one-to-one with the fixing threaded holes, with one end of the fixing bolt passing through the fixing threaded hole and threadedly connected to it.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This high-quality silent bearing effectively prevents dust and impurities from entering the bearing through the combination of a sealing cover, sealing ring, sealing groove, and sound-absorbing pad, thereby reducing bearing wear and extending bearing service life.

[0017] 2. The sound-absorbing pads on the back of the sealing cover and the outer ring of the sealing ring, as well as the silent ring on one end of the sealing ring, can effectively absorb and reduce the noise generated during the operation of the bearing, creating a quiet working environment.

[0018] 3. Lubricant can be easily injected into the bearing through the injection tube, which facilitates the maintenance of the bearing and further extends its service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0021] Figure 3 This is a schematic diagram of the bearing assembly structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the sealing and noise reduction component of this utility model.

[0023] In the diagram: 1. Bearing assembly; 101. Outer ring; 102. Inner bearing ring; 103. Ball groove; 104. Bearing ball; 105. Sealing groove; 106. No. 1 flange ring; 107. Fixing threaded hole; 2. Sealing and silencing assembly; 201. Sealing cover; 202. No. 2 flange ring; 203. Fixing bolt; 204. Lock nut; 205. Injection pipe; 206. Sealing ring; 207. Silent ring; 208. Noise-absorbing pad. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1-4 As shown, this utility model provides a technical solution: a high load-bearing silent bearing, including a bearing assembly 1, with sealing and silent components 2 provided on both the front and back of the bearing assembly 1. The bearing assembly 1 includes an outer ring 101, with a flange ring 106 fixedly sleeved on both the front and rear parts of the outer ring 101.

[0026] The sealing and noise reduction assembly 2 includes a sealing cover 201. A second flange ring 202 is fixedly sleeved on the outer ring surface of the sealing cover 201. Multiple fixing bolts 203 are threaded into the front of the second flange ring 202. A locking nut 204 is threaded into one end of each fixing bolt 203. An injection pipe 205 is fixedly inserted into the top of the front of the sealing cover 201. A cap is threaded into one end of the injection pipe 205. Lubricant can be injected into the bearing through the injection pipe 205, and the cap can prevent lubricant leakage and impurities from entering.

[0027] A sealing ring 206 is fixedly bonded to the center of the back of the sealing cover 201. A sound-absorbing pad 208 is fixedly bonded to both the back of the sealing cover 201 and the outer ring surface of the sealing ring 206. The sound-absorbing pad 208 has a multi-layer composite structure. The base layer is 50% high-density closed-cell foamed EPDM rubber, which has good elasticity and aging resistance; 30% is a noise-reducing functional layer made of polyester fiber cotton and 10% ultra-fine glass wool through needle punching, which can efficiently absorb high-frequency noise; and 20% is a wear-resistant adhesive layer of hydrogenated nitrile rubber containing 5% nano silicon carbide particles, which ensures bonding strength and wear resistance. The overall thickness is 1.5-2.0mm, which takes into account both buffering and noise reduction and assembly space requirements.

[0028] A silent ring 207 is fixedly bonded to one end face of the sealing ring 206. The silent ring 207 is made of a composite material of nitrile rubber and polytetrafluoroethylene through a compression molding process, wherein the nitrile rubber accounts for 60%-70% and the polytetrafluoroethylene accounts for 30%-40%. This ratio retains the high elasticity of nitrile rubber (Shore hardness 65-75A) to ensure a tight fit with the sealing ring 206 and the inner bearing ring 102, while the addition of polytetrafluoroethylene reduces the coefficient of friction to 0.04-0.06, significantly improving wear resistance.

[0029] In actual operation, thanks to the 0.05-0.1mm gap design between the sealing ring 206 and the sealing groove 105, the silent ring 207 and the inner bearing ring 102 remain in a non-contact state. Even under conditions of slight deformation caused by bearing temperature rise, the elastic deformation capacity (elongation ≥300%) of its composite material can absorb the displacement and avoid rigid friction. A 1000-hour durability test shows that the wear of the silent ring 207 is ≤0.03mm, and its contribution to reducing bearing operating noise reaches 15-20dB(A).

[0030] An inner bearing ring 102 is provided inside the outer ring 101. A ball groove 103 is provided between the outer ring 101 and the inner bearing ring 102. Bearing balls 104 are rolled in the ball groove 103. Sealing grooves 105 are provided on both the front and back of the inner bearing ring 102. A sealing ring 206 is located in the sealing groove 105, and the outer wall of the sealing ring 206 is in clearance fit with the inner wall of the sealing groove 105.

[0031] Both No. 1 flange rings 106 have multiple threaded holes 107 on their front sides, arranged in a ring on the front side of the No. 1 flange rings 106. The two No. 1 flange rings 106 and the two No. 2 flange rings 202 correspond one-to-one, with one end face of the No. 1 flange ring 106 and the No. 2 flange ring 202 tightly pressed together. Multiple fixing bolts 203 correspond one-to-one with the threaded holes 107, with one end of the fixing bolt 203 passing through the threaded hole 107 and threadedly connected to it.

[0032] Align the sealing ring 206 of the sealing and silent assembly 2 with the sealing groove 105 of the inner bearing ring 102, so that the first flange ring 106 and one end face of the second flange ring 202 are tightly attached. At this time, the sealing ring 206 will enter the sealing groove 105. Then, pass the fixing bolt 203 through the second flange ring 202 and screw it into the fixing thread hole 107 of the first flange ring 106. Finally, tighten it with the lock nut 204 to complete the installation.

[0033] During use, the bearing balls 104 in the bearing assembly 1 roll within the ball grooves 103, achieving relative rotation between the outer ring 101 and the inner bearing ring 102. The sealing and noise reduction assembly 2 is tightly installed on the front and back of the bearing assembly 1 through the cooperation of the first flange ring 106, the second flange ring 202, the fixing bolts 203, and the lock nut 204.

[0034] The sealing ring 206 is located within the sealing groove 105. The sealing cover 201, the sealing ring 206, and the noise-reducing pad 208 can shield the ball groove 103. Through their combined action, they effectively prevent dust and impurities from entering the bearing, providing a good seal and reducing wear caused by impurities, thus ensuring the bearing's high load-bearing capacity. Simultaneously, the noise-reducing pad 208 and the noise-reducing ring 207 can absorb and reduce noise generated during bearing operation, achieving a quiet operation.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high load capacity silent bearing comprising a bearing assembly (1), characterized in that The bearing assembly (1) is provided with sealing and noise reduction components (2) on both the front and back sides. The bearing assembly (1) includes an outer ring (101), and a flange ring (106) is fixedly sleeved on both the front and rear parts of the outer ring (101). The sealing and silencing assembly (2) includes a sealing cover (201), a second flange ring (202) is fixedly sleeved on the outer ring surface of the sealing cover (201), a plurality of fixing bolts (203) are threaded into the front of the second flange ring (202), a locking nut (204) is threaded into one end of the plurality of fixing bolts (203), an injection pipe (205) is fixedly inserted into the top of the front of the sealing cover (201), a cap is threaded into one end of the injection pipe (205), a sealing ring (206) is fixedly bonded to the middle of the back of the sealing cover (201), a sound-absorbing pad (208) is fixedly bonded to the back of the sealing cover (201) and the outer ring surface of the sealing ring (206), and a silencing ring (207) is fixedly bonded to one end of the sealing ring (206).

2. The high load, low noise bearing of claim 1, wherein, An inner bearing ring (102) is provided inside the outer ring (101), and a ball groove (103) is provided between the outer ring (101) and the inner bearing ring (102).

3. The high load, low noise bearing of claim 2, wherein, The ball groove (103) is fitted with a bearing ball (104) that rolls inside it. The inner bearing ring (102) has sealing grooves (105) on both the front and back sides.

4. The high load, low noise bearing of claim 3, wherein, The sealing ring (206) is located inside the sealing groove (105), and the outer wall of the sealing ring (206) and the inner wall of the sealing groove (105) are in clearance fit.

5. The high load, low noise bearing of claim 1, wherein, Both of the first flange rings (106) have multiple fixed threaded holes (107) on their front sides, and the multiple fixed threaded holes (107) are distributed in a ring on the front side of the first flange ring (106).

6. A high load, low noise bearing according to claim 5, wherein, The two No. 1 flange rings (106) and the two No. 2 flange rings (202) correspond one-to-one. One end face of the No. 1 flange ring (106) and the No. 2 flange ring (202) are tightly attached together. The multiple fixing bolts (203) correspond one-to-one with the fixing threaded holes (107). One end of the fixing bolt (203) passes through the fixing threaded hole (107) and is threadedly connected to it.

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