An air suspension radial bearing with an annular spring style shock absorption device

Abstract

The present invention discloses an air suspension radial bearing with a shock-absorbing device in the form of an annular spring. The air suspension radial bearing includes a bearing inner ring, a bearing bush, and a bearing outer ring arranged from the inside out. The bearing bush is sleeved outside the bearing inner ring, and a plurality of outer convex strips are distributed in an annular array on its outer wall. A plurality of limiting blocks are distributed in an annular array on the outer wall near the edge of both ends of the bearing bush. The air suspension radial bearing further includes a shock-absorbing device, which includes a plurality of shock-absorbing pads and at least two closed-loop annular springs. The plurality of shock-absorbing pads are fixedly attached to the outer end faces of the respective outer convex strips; at least two closed-loop annular springs are respectively tightened around the outer walls of the edge of both ends of the bearing bush and are clamped on the limiting blocks. The shock-absorbing device of the present invention improves the shock-absorbing effect while improving the coaxial accuracy of the bearing bush, the bearing inner ring, and the bearing outer ring, and prolongs the service life of the air bearing.

Description

Technical Field

[0001] The present invention relates to the technical field of radial bearings, and more specifically, to an air suspension radial bearing with an annular spring type shock absorption device. Background Art

[0002] An air suspension radial bearing is a type of air bearing (also known as an air-floating bearing). An air bearing refers to a sliding bearing that uses a gas (usually air, but it could also be other gases) as a lubricant. Air has a lower viscosity than oil, is resistant to high temperatures, and is pollution-free, so it can be used in high-speed machines, instruments, and radioactive devices. However, its load capacity is lower than that of oil. Air bearings are divided into three categories: aerostatic bearings, aerodynamic bearings, and squeeze film bearings. In general industry, aerostatic bearings are more widely used.

[0003] An air bearing needs to be provided with a shock absorption effect to reduce the noise generated during operation. The traditional shock absorption method is to wind a shrapnel with a corrugated structure around the bearing bush, and then put on the outer ring of the bearing outside the bearing bush. The limiting effect of this shrapnel with a corrugated structure is relatively poor, and it still has defects for air bearings with high coaxial accuracy requirements and needs to be improved. Summary of the Invention

[0004] Aiming at the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an air suspension radial bearing with an annular spring type shock absorption device. The purpose of designing this shock absorption device is to reduce noise and improve the coaxial accuracy of the bearing bush and the inner and outer rings of the bearing.

[0005] To solve the above technical problems, the present invention is achieved through the following solutions: An air suspension radial bearing with an annular spring type shock absorption device of the present invention, the air suspension radial bearing includes a bearing inner ring, a bearing bush, and a bearing outer ring arranged from the inside out. The bearing bush is sleeved outside the bearing inner ring, and a plurality of outer convex strips are distributed in an annular array on its outer wall. Near the outer wall of the two port edges of the bearing bush, a plurality of limiting blocks are distributed in an annular array;

[0006] The air suspension radial bearing further includes a shock absorption device, and the shock absorption device includes:

[0007] A plurality of shock pads, fixedly attached to the outer end faces of the respective outer convex strips;

[0008] At least two closed-loop annular springs, respectively tightened around the outer walls of the two port edges of the bearing bush and clamped on the limiting blocks.

[0009] Further, the bearing bush is sleeved on the wide-diameter bearing part of the bearing inner ring, and there is a break on its annular wall.

[0010] Further, the outer convex strip is a square platform structure and faces along the length direction of the bearing bush.

[0011] Furthermore, the shock pad is one of a rubber shock pad, a silica gel shock pad, and a corrugated spring shock pad.

[0012] Furthermore, the limiting block has a U-shaped groove structure.

[0013] Furthermore, an annular cavity for accommodating the annular spring is provided on the outer ring of the bearing.

[0014] Furthermore, the limiting block is arranged in the extending direction of both ends of the outer convex strip.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: while improving the shock absorption effect, the shock absorption device of the present invention improves the coaxial accuracy of the bearing bush, the inner ring of the bearing, and the outer ring of the bearing, and improves the service life of the air bearing. Description of the Drawings

[0016] Figure 1 It is a schematic structural view of a part of the outer ring protective sleeve cut away of the shock absorption device of the present invention.

[0017] Figure 2 It is a schematic installation structural view of the spring and the shock pad of the present invention.

[0018] Figure 3 It is a schematic structural view of the annular spring of the present invention.

[0019] Figure 4 It is a schematic structural view of the bearing bush of the present invention. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention. Obviously, the embodiments described herein are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can also be the communication inside two components. It can be a wireless connection or a wired connection. 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.

[0023] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] Embodiment 1: The specific structure of the present invention is as follows:

[0025] Please refer to the attached Figures 1-4 , an air suspension radial bearing of the present invention with a ring spring type shock absorption device. The air suspension radial bearing includes a bearing inner ring 2, a bearing bush 3, and a bearing outer ring 1 arranged from the inside out. The bearing bush 3 is sleeved outside the bearing inner ring 2, and a plurality of outer convex strips 5 are distributed in an annular array on its outer wall. Near the outer walls of the two port edges of the bearing bush 3, a plurality of limiting blocks 6 are distributed in an annular array;

[0026] The air suspension radial bearing further includes a shock absorption device, and the shock absorption device includes:

[0027] A plurality of shock pads 7, fixedly attached to the outer end faces of the respective outer convex strips 7;

[0028] At least two closed-loop ring springs 4, respectively tightened around the outer walls of the two port edges of the bearing bush 3 and clamped on the limiting blocks 6.

[0029] A preferred technical solution of this embodiment: The bearing bush 3 is sleeved on the wide-diameter bearing part of the bearing inner ring 2, and a break 31 is provided on its annular wall.

[0030] A preferred technical solution of this embodiment: The outer convex strip 5 is a square platform structure, and it faces along the length direction of the bearing bush 3. The outer convex strip 5 can also be designed into other shaped convex platform structures, such as triangular convex platforms, cylindrical convex platform structures, etc.

[0031] A preferred technical solution of this embodiment: The shock pad 7 is one of a rubber shock pad, a silicone shock pad, and a corrugated spring shock pad. The structure of the corrugated spring shock pad is formed by bending a piece of elastic sheet into a corrugated structure plate. Rubber shock pads, silicone shock pads, and corrugated spring shock pads all have good shock absorption effects.

[0032] A preferred technical solution of this embodiment: The limiting block 6 has a U-shaped groove structure, and the U-shaped groove structure can well limit the position of the annular spring 4.

[0033] A preferred technical solution of this embodiment: The outer ring of the bearing 1 is provided with an annular cavity for accommodating the annular spring 4.

[0034] A preferred technical solution of this embodiment: The limiting block 6 is arranged in the extending direction of both ends of the outer convex strip 5, that is, one outer convex strip 5 corresponds to two limiting blocks 6.

[0035] Embodiment 2:

[0036] As Figures 1-4 shown, since a shock pad 7 is provided between the bearing bush 3 and the outer ring protective sleeve 4, and the shock pad 7 is preferably a silica gel shock pad. Due to the action of the shock pad 7 and the two annular springs 4, the bearing bush 3 and the outer ring of the bearing 1 do not form hard contact. Therefore, the shock absorption device can reduce noise. In addition, the shock absorption device can also improve the coaxial accuracy of the bearing bush, the outer ring of the bearing and the inner ring of the bearing.

[0037] Embodiment 3:

[0038] The annular spring 4 of the present invention is provided with 2 or more than 2. The annular spring 4 is limited in position by the limiting block 6. The annular spring 4 of the present invention can not only bind the bearing bush 3, but also has good shock absorption performance.

[0039] In summary, the shock absorption device of the present invention improves the shock absorption effect, improves the coaxial accuracy of the bearing bush, the inner ring of the bearing and the outer ring of the bearing, and improves the service life of the air bearing.

[0040] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the description and drawings of the present invention, or directly or indirectly applied to other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An air suspension radial bearing with a ring spring type shock absorption device, the air suspension radial bearing comprising a bearing inner ring (2), a bearing bush (3) and a bearing outer ring (1) arranged from the inside out, characterized in that, the bearing bush (3) is sleeved outside the bearing inner ring (2), and a plurality of outer convex strips (5) are annularly distributed on its outer wall, and a plurality of limit blocks (6) are annularly distributed on the outer wall near the edge of both ends of the bearing bush (3); the air suspension radial bearing further comprises a shock absorption device, and the shock absorption device comprises: a plurality of shock pads (7), fixedly attached to the outer end surfaces of the respective outer convex strips (5); at least two closed-loop ring springs (4), respectively tightened on the outer walls of the two end portions of the bearing bush (3) and clamped on the limit blocks (6); the bearing bush (3) is sleeved on the wide-diameter bearing portion of the bearing inner ring (2), and a break (31) is provided on its annular wall; the limit block (6) has a U-shaped groove structure; the bearing outer ring (1) is provided with an annular cavity for accommodating the ring spring (4); the limit blocks (6) are arranged in the extending direction of both ends of the outer convex strip (5).

2. An air suspension radial bearing with a ring spring type shock absorption device according to claim 1, characterized in that, the outer convex strip (5) has a square platform structure and faces along the length direction of the bearing bush (3).

3. An air suspension radial bearing with a ring spring type shock absorption device according to claim 1, characterized in that, the shock pad (7) is one of a rubber shock pad, a silica gel shock pad and a corrugated spring shock pad.

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