High-speed mute precision bearing retainer

Abstract

The utility model discloses a high-speed mute precision bearing retainer which comprises an upper ball retainer and a lower ball retainer arranged below the upper ball retainer, and a plurality of supporting pieces are installed between the bottom end of the upper ball retainer and the top end of the lower ball retainer at equal intervals. Spherical shells allowing balls to be embedded are arranged on the outer walls of the upper ball retainer and the lower ball retainer between the adjacent supporting pieces, and sliding connecting pieces are installed at the ends, away from each other, of the upper ball retainer and the lower ball retainer correspondingly. According to the utility model, the whole bearing system is helped to form a completely closed structure, and as the upper dustproof covers are directly arranged at the two end parts of the retainer, the upper dustproof covers connected to the outer ring and the inner ring are not easy to loosen or fall off, and can be more stably fixed on the bearing.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing retainers, in particular to a high-speed, silent, and precise bearing retainer. Background Art

[0002] The silent precision bearing cage is a key component of the bearing. The cage is composed of interconnected support structures to form a stable internal frame for supporting and positioning the rolling elements inside the bearing, such as balls or rollers. Its structural principles mainly include positioning and supporting rolling elements, lubrication and cooling, shock absorption and noise reduction, and bearing loads and inertial forces. The cage is usually made of high-strength, wear-resistant metal alloys or engineering plastics to ensure that it can withstand high-speed rotation and heavy-load working environments;

[0003] For example, a high-speed silent precision bearing retainer disclosed in the authorization announcement number CN212615907U includes an outer ring, an outer groove is fixedly connected to the inside of the outer ring, and there are multiple outer grooves, the inner ring is detachably connected to the inside of the outer ring, the inner groove is fixedly connected to the outer surface of the inner ring, and there are multiple inner grooves, the outer ring and the inner ring are penetrated by bolts a, and there are multiple bolts a, the bolts a are located on both sides of the groove, the top of the bolt a is detachably connected to a nut a, and the bottom of the nut a is detachably connected to the outer ring, and soundproof dust covers are installed on both sides of the retainer, the soundproof dust covers can reduce noise, prevent noise generated when the bearing is working, and prevent dust Dust falls into the retaining frame, but the sound insulation and dust cover in this technical solution is arranged on the inner side of the retaining frame, and the sound insulation and dust cover is not effectively connected to the outer ring or inner ring of the bearing. Therefore, it is necessary to additionally provide a dustproof component to eliminate the gap between the outer ring and the inner ring. That is, although the cover can prevent dust, foreign matter, etc. from entering the interior of the bearing to a certain extent, since it is not connected to the outer ring or the inner ring, pollutants from the external environment may still enter through the joints or gaps of the bearing, causing damage to the bearing or poor operation, and since there is no firm connection point, the sound insulation and dust cover will also be affected by vibration and inertia during the operation of the equipment, causing it to loosen or fall off. Utility Model Content

[0004] The purpose of the utility model is to provide a high-speed silent precision bearing retainer, and dust covers are added to the top and bottom ends of the retainer. The dust covers directly eliminate the gap between the outer ring and the inner ring, and connect the dust covers to the outer ring and the inner ring of the bearing to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-speed silent precision bearing retainer, comprising an upper ball retainer and a lower ball retainer arranged below the upper ball retainer, a plurality of support plates are installed at equal intervals between the bottom end of the upper ball retainer and the top end of the lower ball retainer, ball shells for embedding balls are arranged on the outer walls of the upper ball retainer and the lower ball retainer between adjacent support plates, sliding connectors are installed at the ends of the upper ball retainer and the lower ball retainer that are away from each other, an upper dust cover is fixed to the top end of one of the sliding connectors, and a lower dust cover is fixed to the bottom end of the other sliding connector, and the bottom end of the upper dust cover is rotatably connected to the top end of the outer ring of the silent precision bearing.

[0006] Preferably, a plurality of pins are provided between two adjacent ball shells, and the top and bottom ends of the pins are fixedly connected to the top of the upper ball cage and the top of the lower ball cage respectively.

[0007] Preferably, the sliding connection member is an arc-shaped sliding tongue slidably mounted inside the support sheet, and the top end of the arc-shaped sliding tongue penetrates to the outside of the support sheet and is fixedly connected to the bottom end of the upper dust cover.

[0008] Preferably, four arc-shaped sliding tongues are provided, and an arc-shaped sink groove for the arc-shaped sliding tongue to slide up and down is provided inside the supporting plate.

[0009] Preferably, an inner dust ring is fixed to the inner edge of the upper dust cover, and the inner dust ring and the inner ring of the silent precision bearing are bolted to each other.

[0010] Preferably, the top end of the inner dustproof ring is provided with four internal threaded holes with equal spacing.

[0011] Preferably, two annular grooves for sealing gaskets to be embedded are arranged at the edge of the bottom end of the upper dust cover, and the cross-sectional shape of the annular grooves is circular. The bottom end of the upper dust cover is provided with an annular upper recess extending upward.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the high-speed silent precision bearing retainer utilizes the upper dust cover and the lower dust cover to directly eliminate the gap between the outer ring and the inner ring of the bearing, helping the entire bearing system to form a completely closed structure, and because the upper dust cover is directly arranged at the two ends of the retainer, the upper dust cover connected to the outer ring and the inner ring is not easy to loosen or fall off, and can be more firmly fixed on the bearing, avoiding equipment failure and damage caused by loosening or falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2This is a schematic diagram of the main cross-sectional structure of the utility model;

[0015] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0016] Figure 4 It is a schematic diagram of the three-dimensional structure of the upper dust cover of the utility model;

[0017] Figure 5 It is a three-dimensional structural schematic diagram of the utility model in the assembled state of the outer ring and the inner ring;

[0018] In the figure: 1, upper ball cage; 2, lower ball cage; 3, ball shell; 4, support plate; 401, pin rod; 5, upper dust cover; 501, annular groove; 502, annular upper recess; 6, lower dust cover; 7, arc-shaped sliding tongue; 8, inner dust ring; 801, inner threaded hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-5 The utility model provides an embodiment: a high-speed silent precision bearing cage, comprising an upper ball cage 1 and a lower ball cage 2 arranged below the upper ball cage 1, a plurality of support sheets 4 are installed at equal intervals between the bottom end of the upper ball cage 1 and the top end of the lower ball cage 2, a ball shell 3 for embedding balls is arranged on the outer wall of the upper ball cage 1 and the lower ball cage 2 between adjacent support sheets 4, a plurality of pins 401 are arranged between two adjacent ball shells 3, and the top and bottom ends of the pins 401 are fixedly connected to the top end of the upper ball cage 1 and the top end of the lower ball cage 2 respectively;

[0021] The upper ball cage 1 and the lower ball cage 2 are both installed with sliding connectors at their ends away from each other, an upper dust cover 5 is fixed to the top of one of the sliding connectors, and a lower dust cover 6 is fixed to the bottom of the other sliding connector. The bottom end of the upper dust cover 5 is rotatably connected to the top of the outer ring of the silent precision bearing, and the upper dust cover 5 and the lower dust cover 6 directly eliminate the gap between the outer ring and the inner ring of the bearing;

[0022] The sliding connection member is an arc-shaped sliding tongue 7 slidably mounted inside the support sheet 4. The top end of the arc-shaped sliding tongue 7 penetrates the outside of the support sheet 4 and is fixedly connected to the bottom end of the upper dust cover 5. There are four arc-shaped sliding tongues 7. The support sheet 4 is provided with an arc-shaped sink groove for the arc-shaped sliding tongue 7 to slide up and down. The upper dust cover 5 and the lower dust cover 6 are taken out, so that the upper dust cover 5 and the lower dust cover 6 are plugged into the support sheet 4 through the arc-shaped sliding tongue 7.

[0023] An inner dust ring 8 is fixed to the inner edge of the upper dust cover 5, and the inner dust ring 8 and the inner ring of the silent precision bearing are bolted to each other. Four inner threaded holes 801 with equal spacing are arranged on the top of the inner dust ring 8. The upper dust cover 5 is connected to the inner ring of the bearing through the inner dust ring 8 and rotates together. At this time, the movement between the upper dust cover 5 and the inner ring of the bearing is more synchronized and coordinated.

[0024] During installation, you only need to match the internal thread hole 801 with the inner thread of the bearing and tighten it. The operation is simple and convenient. During maintenance, you can also directly check and replace the upper dust cover without disassembling other parts, saving maintenance time and cost.

[0025] The staff takes out the bolts and screws them into the inner ring of the bearing through the internal threaded holes 801. Then the upper dust cover 5 and the inner dust ring 8 can cover the outer ring and the inner ring surface, forming a tighter dust barrier, thereby improving the dustproof effect.

[0026] Two annular grooves 501 for sealing gaskets to be embedded are arranged at the edge position of the bottom end of the upper dust cover 5, and the cross-sectional shape of the annular groove 501 is circular. The bottom end of the upper dust cover 5 is provided with an annular upper recess 502 extending upward. The sealing ring is embedded in the annular groove 501, so that the upper dust cover 5 can better fix and seal the sealing ring, and effectively prevent the sealing ring from shifting or falling off due to vibration or inertia during the operation of the equipment. At the same time, after the sealing ring is embedded in the annular groove 501, even if vibration or impact occurs during the operation of the equipment, the sealing ring can remain stable and is not easy to be displaced or deformed, thereby ensuring the reliability and durability of the seal.

[0027] When the embodiment of the present application is in use, the staff first sets the inner ring of the high-speed silent precision bearing into the upper ball retainer 1 and the lower ball retainer 2, and then the assembled components are inserted into the outer ring of the high-speed silent precision bearing, and then the upper dust cover 5 and the lower dust cover 6 are taken out, so that the upper dust cover 5 and the lower dust cover 6 are plugged into the support sheet 4 through the arc-shaped sliding tongue 7 until the upper dust cover 5 and the lower dust cover 6 are installed in place. At this time, taking the upper dust cover 5 as an example, the lower surface of the upper dust cover 5 is in contact with the upper surface of the outer ring of the bearing. When the external shaft drives the inner ring of the bearing to rotate, the upper ball retainer 1 and the lower ball retainer 2 are subjected to various loads and inertial forces, and the upper ball retainer 1, the lower ball retainer 2 and the balls loaded on the two can reduce the bearing during operation. The vibration and noise generated during the operation are reduced, friction and wear are reduced, and the bearing is guaranteed to operate for a long time at high speed and high load. During the operation, the inner ring of the bearing drives the upper ball cage 1, the lower ball cage 2 and the upper dust cover 5 to rotate together. At this time, the upper dust cover 5 and the lower dust cover 6 directly eliminate the gap between the outer ring and the inner ring of the bearing, and help the entire bearing system to form a completely closed structure, so that harmful substances such as external dust, foreign matter and liquid cannot enter the interior of the bearing, thereby protecting the bearing from pollution and damage to the greatest extent. At the same time, since the upper dust cover 5 is directly arranged at the two ends of the cage and the upper dust cover 5 connected to the outer ring and the inner ring is not easy to loosen or fall off, it can be more firmly fixed on the bearing, avoiding equipment failure and damage caused by loosening or falling off.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A high-speed silent precision bearing cage, characterized by: The invention comprises an upper ball retainer (1) and a lower ball retainer (2) arranged below the upper ball retainer (1), a plurality of support plates (4) being installed at equal intervals between the bottom end of the upper ball retainer (1) and the top end of the lower ball retainer (2), a ball shell (3) for embedding balls being arranged on the outer walls of the upper ball retainer (1) and the lower ball retainer (2) between adjacent support plates (4), a sliding connection piece being installed at one end of the upper ball retainer (1) and the lower ball retainer (2) away from each other, an upper dust cover (5) being fixed at the top end of one of the sliding connections, a lower dust cover (6) being fixed at the bottom end of the other sliding connection piece, and the bottom end of the upper dust cover (5) being rotatably connected to the top end of the outer ring of a silent precision bearing.

2. A high-speed silent precision bearing cage according to claim 1, characterized in that: A plurality of pins (401) are arranged between two adjacent ball shells (3), and the top and bottom ends of the pins (401) are fixedly connected to the top of the upper ball retainer (1) and the top of the lower ball retainer (2), respectively.

3. The high-speed silent precision bearing cage according to claim 1, characterized in that: The sliding connection member is an arc-shaped sliding tongue (7) slidably mounted inside the support sheet (4), the top end of the arc-shaped sliding tongue (7) penetrates to the outside of the support sheet (4) and is fixedly connected to the bottom end of the upper dust cover (5).

4. A high-speed silent precision bearing cage according to claim 3, characterized in that: Four arc-shaped sliding tongues (7) are provided, and an arc-shaped sink groove for the arc-shaped sliding tongues (7) to slide up and down is provided inside the support plate (4).

5. The high-speed silent precision bearing cage according to claim 1, characterized in that: An inner dustproof ring (8) is fixed to the inner edge of the upper dustproof cover (5), and the inner dustproof ring (8) and the inner ring of the silent precision bearing are bolted to each other.

6. A high-speed silent precision bearing cage according to claim 5, characterized in that: The top end of the inner dustproof ring (8) is provided with four internal threaded holes (801) at equal intervals.

7. The high-speed silent precision bearing cage according to claim 1, characterized in that: Two annular grooves (501) for sealing gaskets to be embedded are arranged at the edge of the bottom end of the upper dust cover (5), and the cross-sectional shape of the annular grooves (501) is circular. The bottom end of the upper dust cover (5) is provided with an annular upper recess (502) extending upward.

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