A high-speed, heavy-load and low-friction high-speed rail bearing

Abstract

The present invention relates to the technical field of high-speed railway bearings, and particularly relates to a high-speed railway bearing with high speed, heavy load and low friction, which comprises an inner ring and an outer ring. The outer ring surface of the inner ring and the inner ring surface of the outer ring are both recessed inward to form annular grooves. Multiple groups of fixing parts protrude on the outer ring surface of the inner ring, and assembly grooves are provided on the fixing parts. Shaft rods are arranged in the assembly grooves, and both ends of the shaft rods extend between the annular grooves and are both provided with rolling elements. Multiple grooves are axially arranged on the outer ring surface of the shaft rods, and rubber strips are installed in the grooves. Multiple arc-shaped ceramic pieces are embedded and installed on the inner ring surface of the outer ring. The structure of the present invention is simple. The outer ring and the inner ring can be kept balanced by the rolling elements on both sides, avoiding inclination. The shaft rods can connect the rolling elements to make them rotate synchronously, and also avoid the falling of the rolling elements. Moreover, after the bearing deforms, the ceramic pieces can rub against the rubber strips to emit a harsh sound, effectively reminding the inspectors.

Description

Technical Field

[0001] The present invention relates to the technical field of high - speed rail bearings, and particularly relates to a high - speed rail bearing with high - speed heavy - load and low friction. Background Art

[0002] A bearing is an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotational accuracy. However, currently, the rollers in the bearing are prone to skewing or causing the outer ring or inner ring to tilt, resulting in irregular rotation of the bearing and an increase in the friction coefficient. At the same time, after the bearing deforms, there is a lack of a warning function, and it is impossible to quickly find the damaged bearing. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a high - speed rail bearing with high - speed heavy - load and low friction to solve the problems raised in the above background art.

[0004] The present invention is achieved through the following technical solutions: A high - speed rail bearing with high - speed heavy - load and low friction includes an inner ring and an outer ring. The inner ring is disposed inside the outer ring. On both sides of the outer - ring surface of the inner ring and on both sides of the inner - ring surface of the outer ring, annular grooves are formed by inward depression. On the outer - ring surface of the inner ring, multiple groups of fixing parts are protruded. Assembly grooves are provided on the fixing parts, and shaft rods are provided in the assembly grooves. Both ends of the shaft rods extend between the annular grooves and are each installed with a rolling element. The outer - ring surfaces of the rolling elements are respectively in contact with the annular grooves on the inner ring and the annular grooves on the outer ring. On the outer - ring surface of the shaft rod, multiple axial grooves are provided, and rubber strips are installed in the grooves. On the inner - ring surface of the outer ring, multiple arc - shaped ceramic pieces are embedded.

[0005] As a preferred technical solution, the cross - sections of the assembly grooves are all arranged in a "C" - shaped structure, the cross - sections of the shaft rods are all arranged in a circular structure, and 1 / 3 of the shaft rod extends along the opening of the assembly groove to the outside.

[0006] As a preferred technical solution, the difference between the ceramic piece and the rubber strip is 0.1 - 0.05 mm.

[0007] As a preferred technical solution, the rolling elements are arranged in a wheel - shaped structure.

[0008] As a preferred technical solution, longitudinal friction patterns are provided on the outer side surfaces of the rubber strips. The lengths of the rubber strips are all shorter than the length of the shaft rod. The rubber strips are all arranged in the middle of the shaft rod, and both ends of the rubber strips do not extend into the assembly grooves.

[0009] The beneficial effects of the present invention are as follows: The structure of the present invention is simple. The rolling elements on both sides plus the shaft rod are equivalent to the wheels of a vehicle plus the axle in the middle. Through the rolling elements on both sides, the outer ring and the inner ring can be kept balanced, avoiding tilting. And through the shaft rod, the rolling elements can be connected to make the two rotate synchronously, also avoiding the dropping of the rolling elements. Moreover, after the bearing is deformed, the ceramic sheet can rub against the rubber strip, thereby emitting a harsh sound, effectively reminding the inspectors. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0011] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0012] Figure 2 It is a schematic diagram of the structure of the inner ring in the present invention;

[0013] Figure 3 It is a cross-sectional view of the shaft rod and the rolling elements in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The following will describe in detail the embodiments of the present invention. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0015] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0016] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "set" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] As Figure 1 、 Figure 2 and Figure 3 shown, a high-speed heavy-load low-friction high-speed rail bearing of the present invention includes an inner ring 1 and an outer ring 2. The inner ring 1 is disposed inside the outer ring 2. Both sides of the outer ring surface of the inner ring 1 and both sides of the inner ring surface of the outer ring 2 are recessed inward to form annular grooves 3. Multiple groups of fixing portions 4 protrude from the outer ring surface of the inner ring 1. Assembly grooves 9 are provided on the fixing portions 4. Shaft rods 5 are provided in the assembly grooves 9. Both ends of the shaft rods 5 extend between the annular grooves 3 and are both provided with rolling elements 8. The outer ring surfaces of the rolling elements 8 are respectively in contact with the annular grooves on the inner ring and the annular grooves on the outer ring. Multiple grooves are axially provided on the outer ring surface of the shaft rod 5, and rubber strips 6 are installed in the grooves. Multiple arc-shaped ceramic pieces 7 are embedded and installed on the inner ring surface of the outer ring 2.

[0018] In this embodiment, the cross-sections of the assembly grooves 9 are all arranged in a "C" shape, and the cross-sections of the shaft rods 5 are all arranged in a circular shape. One-third of the shaft rod 5 extends along the opening of the assembly groove to the outside.

[0019] In this embodiment, the difference between the ceramic pieces 7 and the rubber strips 6 is 0.1 - 0.05 mm, and the difference distance is small, so that slight deformation will be affected.

[0020] In this embodiment, the rolling elements 8 are arranged in a wheel shape.

[0021] In this embodiment, longitudinal friction patterns are provided on the outer side surfaces of the rubber strips 6. The lengths of the rubber strips 6 are all shorter than the length of the shaft rod 5. The rubber strips 6 are all arranged in the middle of the shaft rod 5, and both ends of the rubber strips 6 do not extend into the assembly grooves 9, avoiding friction between the rubber strips and the assembly grooves and avoiding affecting rolling.

[0022] In this specific implementation, the rolling elements and the shaft rods on both sides are equivalent to the wheels of a vehicle plus the middle axle. Through the rolling elements on both sides, the outer ring and the inner ring can be kept balanced and tilting is avoided. And through the shaft rods, the rolling elements can be connected to make the two rotate synchronously, and the dropping of the rolling elements is also avoided. Through multiple fixing portions and assembly grooves, the shaft rods can be positioned so that the shaft rods can only rotate in the assembly grooves, avoiding friction between the rolling elements. And after the bearing is deformed, the outer ring will squeeze inward, making the ceramic pieces and the rubber strips contact each other. Through the discontinuous friction between the rubber strips and the ceramic pieces, a harsh sound can be generated, effectively reminding the inspectors;

[0023] The friction between the rubber strip and the ceramic piece is like a rubber shoe walking on a floor tile, and sound will be generated due to friction.

[0024] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or substitution that can be thought of without creative work should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A high-speed heavy-load low-friction high-speed rail bearing, characterized in that: It includes an inner ring (1) and an outer ring (2). The inner ring (1) is arranged inside the outer ring (2). Both sides of the outer ring surface of the inner ring (1) and both sides of the inner ring surface of the outer ring (2) are recessed inward to form annular grooves (3). Multiple groups of fixing parts (4) protrude from the outer ring surface of the inner ring (1). Assembly grooves (9) are provided on the fixing parts (4). Shaft rods (5) are provided in the assembly grooves (9). Both ends of the shaft rods (5) extend between the annular grooves (3) and rolling elements (8) are installed at both ends. The outer ring surfaces of the rolling elements (8) are in contact with the annular grooves on the inner ring and the annular grooves on the outer ring respectively. Multiple grooves are axially provided on the outer ring surface of the shaft rod (5), and rubber strips (6) are installed in the grooves. Multiple arc-shaped ceramic pieces (7) are embedded and installed on the inner ring surface of the outer ring (2); The cross-sections of the assembly grooves (9) are all arranged in a "C" shape, the cross-sections of the shaft rods (5) are all arranged in a circular shape, and 1 / 3 of the shaft rod (5) extends to the outside along the opening of the assembly groove; Longitudinal friction patterns are provided on the outer side surfaces of the rubber strips (6). The lengths of the rubber strips (6) are all shorter than the length of the shaft rod (5). The rubber strips (6) are all arranged in the middle of the shaft rod (5), and both ends of the rubber strips (6) do not extend into the assembly grooves (9); The rolling elements (8) can be connected by the shaft rods (5) to make them rotate synchronously. The shaft rods (5) can be positioned by multiple groups of fixing parts (4) and the assembly grooves (9) so that the shaft rods (5) can only rotate in the assembly grooves (9). After the bearing deforms, the outer ring (2) will squeeze inward, causing a harsh sound when the ceramic pieces (7) come into contact with the rubber strips (6).

2. The high-speed heavy-load low-friction high-speed rail bearing according to claim 1, wherein: The difference between the ceramic pieces (7) and the rubber strips (6) is 0.1 - 0.05 mm.

3. The high-speed heavy-load low-friction high-speed rail bearing according to claim 1, characterized in that: The rolling elements (8) are arranged in a wheel shape.

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