Bidirectional bearing

Abstract

The utility model discloses a two-way load-bearing bearing which comprises an outer supporting sleeve and an inner supporting sleeve which is fastened in the outer supporting sleeve in a sliding mode, triangular seats are fixed to the ends, away from each other, of the outer supporting sleeve and the inner supporting sleeve, and a one-way sealed bearing body is installed on the outer wall of one side of each triangular seat. The rear sealing outer ring, the inner shaft ring and the front sealing outer ring are utilized to form a shell structure on the outer peripheral surface of the inner ring body, and the front end part, the rear end part and the outer side of the ball rack stabilizing structure are in a sealed state, so that impurities such as dust, pollutants and moisture can be effectively prevented from entering the bearing; risks of abrasion, corrosion and damage of the surface of the bearing can be reduced, and the service life of the bearing is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a two-way bearing. Background Technique

[0002] The function of a two-way bearing is to bear radial and axial loads simultaneously in applications, such as automotive drive systems and machine tool spindles. Its structure consists of an inner ring, an outer ring, rolling elements and a cage. The rolling elements roll between the inner ring and the outer ring to bear the load, and the cage keeps the relative positions of the rolling elements. Its working principle is based on rolling friction, and the radial and axial loads are transmitted and borne through the rolling of the rolling elements between the inner and outer rings. For example, the composite two-way bearing disclosed in the authorized publication number CN219366578U includes an outer ring, an inner ring, a double row of steel balls arranged between the outer ring and the inner ring, and a cage for installing the rolling elements. The surface of the outer ring is convex, and the convexity extends circumferentially along the surface of the outer ring and is connected end to end to form a convex ring; two gaskets are also sleeved on the outer ring, and the two gaskets are located on both sides of the convex ring and cooperate with the convex ring to form an assembly space for installing rollers. It can provide high axial bearing capacity in high-speed rotation occasions and meet the requirements of high speed and high load. However, in the above technical solution, the two ends of the bearing are of an open structure, and the outer ring is provided with a circular opening, which results in the steel balls always being in contact with the external environment, and the steel balls are not in a closed space. Since the steel balls are in contact with the external environment, they may be invaded by dust, pollutants, moisture, etc. These impurities may cause wear, corrosion and damage to the bearing surface, thereby reducing the life and performance of the bearing. And due to the existence of the opening in the outer ring, the lubricant may leak from the bearing, resulting in insufficient lubrication or the need to frequently add lubricant, which may increase the maintenance work and cost, and may also lead to the risk of overheating and damage of the bearing during operation. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a two-way bearing to solve the problems put forward in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A two-way bearing includes an outer support sleeve and an inner support sleeve slidably fastened inside the outer support sleeve. Triangular seats are fixed to the ends of the outer support sleeve and the inner support sleeve that are away from each other. A one-way sealed bearing body is installed on the outer wall of one side of the triangular seat.

[0005] Preferably, the one-way sealed bearing body is composed of a rear sealing outer ring, an inner shaft ring, a front sealing outer ring, an inner ring body and a ball cage stabilizing structure. The rear sealing outer ring is fixed on the outer wall of one side of the triangular seat. One end of the inner shaft ring is fixed inside the rear sealing outer ring, and one end of the inner shaft ring penetrates to the outside of the rear sealing outer ring. The front sealing outer ring is fixed at the bottom end of the inner shaft ring. The inner ring body is rotatably installed inside the inner shaft ring through the ball cage stabilizing structure.

[0006] Preferably, a rear sealing ring is fixed at the top opening of the rear sealing outer ring, and a front sealing ring is fixed at the bottom opening of the front sealing outer ring. The inner diameters of the rear sealing ring and the front sealing ring are equal to the inner diameter of the inner ring body.

[0007] Preferably, annular clamping structures are installed between the rear sealing outer ring, the front sealing outer ring and the inner shaft ring. The annular clamping structure includes a rear sealing ring fixed on the inner walls of the rear sealing outer ring and the front sealing outer ring, and annular grooves provided at both ends of the surface of the inner shaft ring. The annular lips and the annular grooves match each other.

[0008] Preferably, two annular protruding portions are provided on the outer peripheral surface of the inner ring body. The outer wall of one side of the annular protruding portion away from the inner ring body is in contact with the inner wall of the inner shaft ring. A cavity is provided inside the inner shaft ring between the two annular protruding portions.

[0009] Preferably, the ball cage stabilizing structure is a steel ball cage installed in the cavity and several steel ball bodies installed inside the steel ball cage. The outer diameter of the steel ball body is equal to the width of the cavity.

[0010] Preferably, a number of equally spaced inner threaded holes are provided at the bottom end of the inner support sleeve. A locking bolt for threaded connection with the inner threaded holes is installed on one side of the bottom end of the outer support sleeve. A shaft hole is provided inside the triangular seat.

[0011] Preferably, an annular inner groove is provided on the outer wall of one side of the outer support sleeve. The depth of the annular inner groove is greater than or equal to the length of the inner support sleeve. Rubber blocks are installed at the corner positions on the outer wall of one side of the triangular seat.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: The two-way bearing has a structure in which a rear sealing outer ring and an inner ring body cooperate with each other. The external shaft drives the inner ring body to rotate. At this time, the ball cage stabilizing structure ensures the rotational stability of the inner ring body and the inner shaft ring. When an external shaft applies a load to the bearing, the shaft load is transmitted to the inner shaft ring through the inner ring body and the ball cage stabilizing structure. The rear sealing outer ring, the inner shaft ring, and the front sealing outer ring form a housing structure on the outer peripheral surface of the inner ring body. The front and rear ends and the outer side of the ball cage stabilizing structure are in a sealed state, which can effectively prevent impurities such as dust, pollutants, and moisture from entering the bearing interior, thereby reducing the risk of wear, corrosion, and damage to the bearing surface and extending the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 3 is a front view sectional structural schematic diagram of the present utility model;

[0016] Figure 4 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 5 is a three-dimensional sectional structural schematic diagram of the one-way sealed bearing body of the present utility model;

[0018] In the figure: 1. Outer support sleeve; 101. Locking bolt; 2. Inner support sleeve; 201. Internal thread hole; 3. Triangular seat; 4. Rear sealing outer ring; 401. Rear sealing ring; 402. Annular lip; 5. Inner shaft ring; 501. Annular groove; 6. Front sealing outer ring; 7. Front sealing ring; 8. Inner ring body; 801. Cavity; 9. Annular protrusion; 10. Steel ball cage; 11. Steel ball body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present utility model belong to the scope of protection of the present utility model.

[0020] Please refer to Figures 1-5, An embodiment provided by the present utility model: A two-way bearing includes an outer support sleeve 1 and an inner support sleeve 2 slidably fastened inside the outer support sleeve 1. At the ends of the outer support sleeve 1 and the inner support sleeve 2 that are away from each other, triangular seats 3 are fixed. On the outer wall of one side of the triangular seat 3, a one-way sealed bearing body is installed. This two-way bearing consists of the outer support sleeve 1, the inner support sleeve 2, and the triangular seat 3 to form a bearing bracket structure with adjustable sliding distance, realizing the micro-distance adjustment function of the coaxial body, so that the end of the shaft body can be more easily inserted into the one-way sealed bearing body, ensuring the connection stability between the bearing and the shaft body;

[0021] The one-way sealed bearing body consists of a rear sealing outer ring 4, an inner shaft ring 5, a front sealing outer ring 6, an inner ring body 8, and a ball frame stabilizing structure. The rear sealing outer ring 4 is fixed on the outer wall of one side of the triangular seat 3. One end of the inner shaft ring 5 is fixed inside the rear sealing outer ring 4, and one end of the inner shaft ring 5 penetrates to the outside of the rear sealing outer ring 4. The front sealing outer ring 6 is fixed at the bottom end of the inner shaft ring 5. The inner ring body 8 is rotatably installed inside the inner shaft ring 5 through the ball frame stabilizing structure;

[0022] The external shaft body drives the inner ring body 8 to rotate. At this time, the ball frame stabilizing structure ensures the rotational stability of the inner ring body 8 and the inner shaft ring 5, so that when an external shaft body applies to this bearing, the shaft load is transmitted to the inner shaft ring 5 through the inner ring body 8 and the ball frame stabilizing structure;

[0023] In the radial direction of this bearing, the ball frame stabilizing structure rolls along the contact line between the inner ring body 8 and the inner shaft ring 5, bearing and transmitting the radial load of the shaft, so that the shaft body and this bearing can work under high-speed and high-load conditions;

[0024] At the top opening of the rear sealing outer ring 4, a rear sealing ring 401 is fixed. At the bottom opening of the front sealing outer ring 6, a front sealing ring 7 is fixed. The inner diameters of the rear sealing ring 401 and the front sealing ring 7 are equal to the inner diameter of the inner ring body 8. The rear sealing ring 401 and the front sealing ring 7 are located at the front and rear ends of the ball frame stabilizing structure, achieving the purpose of sealing and dust prevention, thereby extending the service life of the bearing;

[0025] The shaft load is transmitted to the inner shaft ring 5 through the inner ring body 8 and the ball frame stabilizing structure. The rear sealing outer ring 4 is fixed on the outer wall of one side of the triangular seat 3. At this time, the rear sealing outer ring 4, the inner shaft ring 5, and the front sealing outer ring 6 do not rotate, and the rear sealing outer ring 4, the inner shaft ring 5, and the front sealing outer ring 6 form a housing structure on the outer peripheral surface of the inner ring body 8. The front and rear ends and the outside of the ball frame stabilizing structure are in a sealed state, which can effectively prevent impurities such as dust, pollutants, and moisture from entering the bearing interior;

[0026] There are annular clamping structures installed between the rear sealing outer ring 4, the front sealing outer ring 6 and the inner shaft ring 5. The annular clamping structure includes a rear sealing ring 401 fixed on the inner walls of the rear sealing outer ring 4 and the front sealing outer ring 6, and annular grooves 501 arranged at both ends of the surface of the inner shaft ring 5. The annular lips 402 and the annular grooves 501 match each other. The rear sealing outer ring 4 and the inner shaft ring 5 are fixedly connected through the annular lips 402 and the annular grooves 501, so as to increase the contact area and connection stability between the two;

[0027] There are two annular protrusions 9 arranged on the outer peripheral surface of the inner ring body 8. The outer wall of one side of the annular protrusion 9 away from the inner ring body 8 is in contact with the inner wall of the inner shaft ring 5. There is a cavity 801 inside the inner shaft ring 5 between the two annular protrusions 9. The ball frame stabilizing structure is a steel ball cage 10 installed in the cavity 801, and several steel ball bodies 11 installed inside the steel ball cage 10. The outer diameter of the steel ball body 11 is equal to the width of the cavity 801;

[0028] During the operation of the bearing, the inner ring body 8 and the inner shaft ring 5 rotate relatively. The steel ball bodies 11 serve to reduce the friction between the two, and the steel ball cage 10 enables the multiple steel ball bodies 11 to rotate stably, maintaining the relative positions of the steel ball bodies 11 and preventing them from colliding with each other;

[0029] There are several equally spaced internal threaded holes 201 arranged at the bottom end of the inner support sleeve 2. One side of the bottom end of the outer support sleeve 1 is installed with a locking bolt 101 for threaded connection with the internal threaded holes 201. There is a shaft hole inside the triangular seat 3. There is an annular internal groove arranged on the outer wall of one side of the outer support sleeve 1. The depth of the annular internal groove is greater than or equal to the length of the inner support sleeve 2. Rubber blocks are installed at the corner positions on the outer wall of one side of the triangular seat 3;

[0030] The staff can pull the inner support sleeve 2 to make the outer support sleeve 1 and the inner support sleeve 2 slide relatively, so as to adjust the distance between the two single - way sealed bearing bodies, making the combination of the single - way sealed bearing body and the shaft body more stable. After the distance between the two single - way sealed bearing bodies is adjusted, the staff can lock the outer support sleeve 1 and the inner support sleeve 2 by using the locking bolt 101 and the internal threaded holes 201.

[0031] When the embodiment of the present application is in use, first, the bi-directional bearing consists of an outer support sleeve 1, an inner support sleeve 2, and a triangular seat 3 to form a bearing bracket structure with adjustable sliding distance, realizing the micro-distance adjustment function of coaxial bodies, so that the end of the shaft body can be more easily inserted into the one-way sealed bearing body, ensuring the connection stability between the bearing and the shaft body. The external shaft body drives the inner ring body 8 to rotate. At this time, the ball frame stable structure ensures the rotational stability of the inner ring body 8 and the inner shaft ring 5. When an external shaft body applies force to the bearing, the shaft load is transmitted to the inner shaft ring 5 through the inner ring body 8 and the ball frame stable structure. The rear sealing outer ring 4 is fixed on the outer wall of one side of the triangular seat 3. At this time, the rear sealing outer ring 4, the inner shaft ring 5, and the front sealing outer ring 6 do not rotate, and the rear sealing outer ring 4, the inner shaft ring 5, and the front sealing outer ring 6 form a housing structure on the outer peripheral surface of the inner ring body 8. The front and rear ends and the outside of the ball frame stable structure are in a sealed state, which can effectively prevent impurities such as dust, pollutants, and moisture from entering the bearing interior. This can reduce the risk of wear, corrosion, and damage on the bearing surface, extend the life of the bearing, the lubricating grease can always be in the cavity 801, prevent the lubricant from leaking from the bearing, ensure that a good lubricating film is formed inside the bearing, help reduce friction and wear, and improve the operating efficiency and life of the bearing.

Claims

1. A bidirectional load-bearing bearing, characterized in that: The invention comprises an outer support sleeve (1) and an inner support sleeve (2) which is slidably bolted inside the outer support sleeve (1); a triangular seat (3) is fixed to the ends of the outer support sleeve (1) and the inner support sleeve (2) which are away from each other; a one-way sealed bearing body is installed on the outer wall of one side of the triangular seat (3); the one-way sealed bearing body comprises a rear sealing outer ring (4), an inner shaft ring (5), a front sealing outer ring (6), an inner ring body (8) and a ball rack stabilizing structure; the rear sealing outer ring (4) is fixed to the outer wall of one side of the triangular seat (3); the inner shaft ring (5) is fixed to one end inside the rear sealing outer ring (4); one end of the inner shaft ring (5) extends to the outside of the rear sealing outer ring (4); the front sealing outer ring (6) is fixed to the bottom end of the inner shaft ring (5); and the inner ring body (8) is rotatably installed inside the inner shaft ring (5) through the ball rack stabilizing structure.

2. A bidirectional load-bearing bearing according to claim 1, characterized in that: A rear sealing ring (401) is fixed at the top opening of the rear sealing outer ring (4), and a front sealing ring (7) is fixed at the bottom opening of the front sealing outer ring (6). The inner diameters of the rear sealing ring (401) and the front sealing ring (7) are equal to the inner diameter of the inner ring body (8).

3. A bidirectional load-bearing bearing according to claim 1, characterized in that: An annular clamping structure is installed between the rear sealing outer ring (4), the front sealing outer ring (6) and the inner shaft ring (5), and the annular clamping structure comprises an annular lip (402) fixed on the inner wall of the rear sealing outer ring (4) and the front sealing outer ring (6), and annular grooves (501) arranged at both ends of the surface of the inner shaft ring (5), and the annular lip (402) and the annular groove (501) are mutually matched.

4. A bidirectional load-bearing bearing according to claim 1, characterized in that: The outer peripheral surface of the inner ring body (8) is provided with two annular protrusions (9), the outer wall of the annular protrusion (9) away from the inner ring body (8) is in contact with the inner wall of the inner shaft ring (5), and a cavity (801) is provided inside the inner shaft ring (5) between the two annular protrusions (9).

5. A bidirectional load-bearing bearing according to claim 1, characterized in that: The ball rack stabilizing structure comprises a steel ball retaining rack (10) installed in the cavity (801), and a plurality of steel ball bodies (11) installed inside the steel ball retaining rack (10), wherein the outer diameter of the steel ball bodies (11) is equal to the width of the cavity (801).

6. A bidirectional load-bearing bearing according to claim 1, characterized in that: The bottom end of the inner support sleeve (2) is provided with a plurality of internal threaded holes (201) at equal intervals, a locking bolt (101) for threaded connection with the internal threaded hole (201) is installed on one side of the bottom end of the outer support sleeve (1), and an axial hole is provided inside the triangular seat (3).

7. A bidirectional load-bearing bearing according to claim 1, characterized in that: An annular inner groove is provided on the outer wall of one side of the outer support sleeve (1), the depth of the annular inner groove is greater than or equal to the length of the inner support sleeve (2), and rubber blocks are installed at the corner positions of the outer wall of one side of the triangular seat (3).

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