Low-noise roller bearing

Abstract

The utility model discloses a low-noise roller bearing which comprises an inner ring, the outer side of the inner ring is sleeved with a retainer, the outer side of the retainer is sleeved with an outer ring, mounting grooves are formed in the retainer at equal angles, rollers are rotationally mounted in the mounting grooves, and the outer walls of the rollers make contact with the outer wall of the inner ring and the inner wall of the retainer. A lubricating protection assembly is mounted on the retainer and comprises inner cavities formed in the retainer at equal angles, the inner cavities and the mounting grooves are formed in a staggered manner at intervals, oil spraying holes are formed in the two ends of each inner cavity at equal intervals, and the oil spraying holes penetrate into the mounting grooves; in the working process, the temperature of the heated roller is transmitted into the sealed space through the arranged heat conducting fins, the two pistons are pushed to be far away from each other after air pressure is increased, lubricating oil in the oil filling space is extruded to the surface of the roller from the oil spraying holes, the roller is lubricated and cooled, friction generated when the roller rotates is reduced, and the service life of the roller is prolonged. And the effect of reducing noise is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of roller bearings, in particular to a low-noise roller bearing. Background Art

[0002] Roller bearings are a common mechanical component. Their working principle is mainly based on the principle of rolling friction. The relative movement between the shaft and the seat is achieved through the rolling of the rollers. A low-noise roller bearing is based on the traditional roller bearing. Through a series of technical innovations and optimizations, it has achieved a significant reduction in noise during operation. However, it still has the following defects:

[0003] As the roller rotates continuously, it generates heat due to friction, which intensifies the friction between the roller and the contact surface between the inner ring and the outer ring, and intensifies the noise. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a low-noise roller bearing, which effectively solves the problem of increased friction between the contact surfaces of the inner ring and the outer ring after the roller heats up, resulting in increased noise.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-noise roller bearing, comprising an inner ring, a retainer is sleeved on the outer side of the inner ring, an outer ring is sleeved on the outer side of the retainer, mounting grooves are provided on the retainer at equal angles, rollers are rotatably mounted inside the mounting grooves, the outer walls of the rollers are in contact with the outer walls of the inner ring and the inner walls of the retainer, and a lubrication protection component is installed on the retainer;

[0006] The lubrication protection component includes an internal cavity opened at an equal angle inside the retaining frame, the internal cavity and the mounting groove are arranged alternately, and oil injection holes are opened at equal distances at both ends of the internal cavity. The oil injection holes penetrate into the interior of the mounting groove, and two pistons are symmetrically and movably installed inside the internal cavity. The two pistons can move along the length direction of the internal cavity, and a sealed space is formed between the two pistons. Two oil-filled spaces are formed on the sides of the two pistons away from each other.

[0007] Preferably, a rotating roller is provided inside the internal cavity, the rotating roller is located between the two pistons, two winding grooves are symmetrically provided on the rotating roller, a pull rope is wound inside the winding groove, and the ends of the two pull ropes are fixedly connected to the two pistons respectively.

[0008] Preferably, rotating shafts are symmetrically installed at both ends of the rotating roller, and one of the rotating shafts is rotatably installed inside a shaft groove, and the shaft groove is opened on the inner wall of the internal cavity.

[0009] Preferably, the other rotating shaft is inserted into the interior of the slot, the slot is opened on the inner wall of the internal cavity, and a spiral spring is installed between the outer wall of the rotating shaft and the inner wall of the slot.

[0010] Preferably, a heat conducting member is installed at an equal angle on the front side of the retaining frame, and the heat conducting member includes two heat conducting plates, and two ends of the heat conducting plates respectively enter the interior of the installation groove and the interior of the sealing space between the two pistons.

[0011] Preferably, an oil-filling part is installed at an equal angle on the back of the retaining frame, and the oil-filling part includes two oil-filling pipes, which are respectively connected to two oil-filling spaces of the two pistons that are far away from each other, and pipe caps are installed on the oil-filling pipes.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] During operation, the heat generated by the roller is transferred to the sealed space through the heat conducting sheet. When the air pressure increases, the two pistons are pushed away from each other, and the lubricating oil in the oil-filled space is squeezed out from the oil injection hole onto the roller surface, lubricating and cooling the roller, reducing the friction when the roller rotates, and playing a role in reducing noise.

[0014] During operation, when the set temperature rises, the two pistons move away from each other, and the rotating roller is rotated by pulling the rope, causing the volute spring to compress. When the temperature drops, the rotating roller rotates under the elastic force of the volute spring, thereby pulling the two pistons back to facilitate subsequent lubricating oil extrusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0016] In the attached picture:

[0017] Figure 1 This is a schematic diagram of the structure of a low-noise roller bearing of the utility model;

[0018] Figure 2 It is a schematic diagram of the retainer structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the internal structure of the cage of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the lubrication protection component of the utility model;

[0021] Figure 5 This is a schematic diagram of the oil-filled pipe structure of the utility model.

[0022] In the figure: 1. Inner ring; 2. Outer ring; 3. Cage; 4. Mounting groove; 5. Roller; 6. Heat conducting plate; 7. Lubrication protection assembly; 701. Internal cavity; 702. Oil injection hole; 703. Rotating roller; 704. Winding groove; 705. Pull rope; 706. Rotating shaft; 707. Shaft groove; 708. Slot; 709. Volute spring; 710. Piston; 8. Oil filling pipe; 9. Pipe cap. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] Embodiment 1, by Figure 1-5 The utility model relates to a low-noise roller bearing, comprising an inner ring 1, a retaining frame 3 is sleeved on the outer side of the inner ring 1, an outer ring 2 is sleeved on the outer side of the retaining frame 3, a mounting groove 4 is opened at an equal angle on the retaining frame 3, a roller 5 is rotatably mounted inside the mounting groove 4, the outer wall of the roller 5 contacts the outer wall of the inner ring 1 and the inner wall of the retaining frame 3, and a lubrication protection component 7 is installed on the retaining frame 3;

[0025] The lubrication protection component 7 includes an internal cavity 701 opened at an equal angle inside the retaining frame 3, the internal cavity 701 and the mounting groove 4 are arranged alternately at intervals, and oil injection holes 702 are equidistantly opened at both ends of the internal cavity 701, and the oil injection holes 702 penetrate into the interior of the mounting groove 4. Two pistons 710 are symmetrically and movably installed inside the internal cavity 701, and the two pistons 710 can move along the length direction of the internal cavity 701. A sealed space is formed between the two pistons 710, and two oil-filled spaces are formed on the side where the two pistons 710 are away from each other. A rotating roller 703 is provided inside the internal cavity 701, and the rotating roller 703 is located between the two pistons 710. Two winding grooves 704 are symmetrically opened on the rotating roller 703, and a pull rope 705 is wound inside the winding groove 704. The ends of the two pull ropes 705 are respectively fixed to the two pistons 710 The rotating roller 703 is fixedly connected, and rotating shafts 706 are symmetrically installed at both ends. One of the rotating shafts 706 is rotatably installed in the inside of the shaft groove 707, and the shaft groove 707 is opened on the inner wall of the internal cavity 701. The other rotating shaft 706 is inserted into the inside of the slot 708, and the slot 708 is opened on the inner wall of the internal cavity 701. A volute spring 709 is installed between the outer wall of the rotating shaft 706 and the inner wall of the slot 708. A heat-conducting part is installed at an equal angle on the front of the retaining frame 3. The heat-conducting part includes two heat-conducting plates 6. The two ends of the heat-conducting plates 6 respectively enter the inside of the installation groove 4 and the inside of the sealed space between the two pistons 710. An oil-filling part is installed at an equal angle on the back of the retaining frame 3. The oil-filling part includes two oil-filling pipes 8. The two oil-filling pipes 8 are respectively connected with two oil-filling spaces of the two pistons 710 that are far away from each other, and a pipe cap 9 is installed on the oil-filling pipe 8.

[0026] Working principle: During operation, when the roller 5 rotates continuously and the temperature rises, the friction between the outer wall of the roller 5 and the contact surface between the inner ring 1 and the outer ring 2 intensifies, and the noise increases. At this time, after the temperature inside the mounting groove 4 rises, the heat conducting sheet 6 transfers the heat to the sealed space between the two pistons 710, so that the air in the sealed space expands due to the heat, thereby pushing the two pistons 710 away from each other, so that the two pistons 710 squeeze the lubricating oil in the oil-filled space from the oil injection hole 702 into the surface of the roller 5 in the mounting groove 4, which has a lubricating and cooling effect on the roller 5, thereby reducing the noise generation;

[0027] When the temperature rises, the two pistons 710 move away from each other, and the pull rope 705 pulls the rotating roller 703 to rotate, causing the spiral spring 709 to compress. When the temperature drops, the rotating roller 703 rotates under the elastic force of the spiral spring 709, thereby pulling the two pistons 710 back to facilitate the subsequent lubricating oil extrusion work.

Claims

1. A low-noise roller bearing, comprising an inner ring (1), characterized in that: The outer side of the inner ring (1) is provided with a retaining frame (3), the outer side of the retaining frame (3) is provided with an outer ring (2), the retaining frame (3) is provided with mounting grooves (4) at equal angles, a roller (5) is rotatably mounted inside the mounting groove (4), the outer wall of the roller (5) is in contact with the outer wall of the inner ring (1) and the inner wall of the retaining frame (3), and a lubrication protection component (7) is mounted on the retaining frame (3); The lubrication protection component (7) comprises an internal cavity (701) opened at an equal angle inside the retaining frame (3), the internal cavity (701) and the mounting groove (4) are arranged alternately at intervals, and oil injection holes (702) are opened at equal distances at both ends of the internal cavity (701), and the oil injection holes (702) penetrate into the interior of the mounting groove (4), and two pistons (710) are symmetrically and movably installed inside the internal cavity (701), and the two pistons (710) can move along the length direction of the internal cavity (701), and a sealed space is formed between the two pistons (710), and two oil-filled spaces are formed on the sides of the two pistons (710) that are away from each other.

2. A low-noise roller bearing according to claim 1, characterized in that: A rotating roller (703) is provided inside the internal cavity (701), and the rotating roller (703) is located between the two pistons (710). Two winding grooves (704) are symmetrically provided on the rotating roller (703), and a pull rope (705) is wound inside the winding groove (704), and the ends of the two pull ropes (705) are respectively fixedly connected to the two pistons (710).

3. A low-noise roller bearing according to claim 2, characterized in that: Rotating shafts (706) are symmetrically mounted at both ends of the rotating roller (703), wherein one of the rotating shafts (706) is rotatably mounted inside a shaft groove (707) which is formed on the inner wall of the internal cavity (701).

4. A low-noise roller bearing according to claim 3, characterized in that: The other rotating shaft (706) is inserted into the slot (708), the slot (708) is opened on the inner wall of the internal cavity (701), and a spiral spring (709) is installed between the outer wall of the rotating shaft (706) and the inner wall of the slot (708).

5. A low-noise roller bearing according to claim 1, characterized in that: A heat conducting member is installed at an equal angle on the front face of the retaining frame (3), the heat conducting member comprising two heat conducting plates (6), the two ends of the heat conducting plates (6) respectively entering the interior of the installation groove (4) and the interior of the sealed space between the two pistons (710).

6. A low-noise roller bearing according to claim 1, characterized in that: An oil filling part is mounted at equal angles on the back of the retaining frame (3), the oil filling part comprising two oil filling pipes (8), the two oil filling pipes (8) are respectively connected to two oil filling spaces of the two pistons (710) which are separated from each other, and a pipe cap (9) is mounted on the oil filling pipe (8).

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