Positioning structure of radial air bearing

Abstract

The utility model relates to the technical field of radial air bearings, in particular to a positioning structure of a radial air bearing. Comprising a bearing seat, a radial air bearing is installed in an inner hole of the bearing seat, one end of the radial air bearing is provided with a bent part which is a fixed end, the other end of the radial air bearing is a free end, the bent part is fixedly connected with a positioning rod, one end of the positioning rod is fixedly connected with a bearing gland, and the bearing gland is fixedly connected with the bearing seat. A slot matched with the bending part and the positioning rod is formed in the side wall of the inner hole of the bearing seat; and a blocking table matched with the radial air bearing is arranged at one end, far away from the bearing gland, of the side wall of the inner hole of the bearing seat. The positioning rod can realize fixed installation of the bending part in the radial direction, so that displacement of the bending part in the radial direction is effectively avoided; the radial air bearing can be fixedly installed in the axial direction through the bearing gland and the blocking table, displacement of the radial air bearing in the axial direction is effectively avoided, and therefore the stability of the radial air bearing in the using process is improved, and the supporting effect of the radial air bearing is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to radial air bearing technical field especially relates to a positioning structure of radial air bearing. BACKGROUND

[0002] At present, in high-speed centrifugal air compressor, the radial force of the main shaft is mainly borne through the radial air bearing, and the radial air bearing is a self-acting dynamic pressure air bearing using air as lubricating medium, such as the patent application with the publication number CN218063093U discloses a radial air bearing, which mainly comprises a top foil and a wave foil, one end of the top foil is provided with a bent part as a fixed end, and the other end is a free end, wherein when the bent part of the top foil is fixed, the bent part is pressed and fixed through the positioning pin passing through the positioning hole on the bearing seat, this positioning mode mainly has the following shortcomings in actual application process: first, the positioning pin is easy to loosen, which causes the bent part to be not firmly fixed, and displacement in the radial direction is easy to occur, the top foil loses the fixed support, and the entire radial bearing capacity of the bearing is affected; second, the bearing has no positioning structure at both ends, and when the positioning pin loosens, displacement in the axial direction is also easy to occur, and in severe cases, the risk of support failure may occur, the above two points will affect the stability of the radial air bearing during use and affect the radial support effect, and there is no good way to solve the above problems at present.

[0003] In summary, the above problems of the radial air bearing during use have become a technical problem urgently to be solved in the industry. UTILITY MODEL CONTENTS

[0004] The utility model provides a positioning structure of radial air bearing to make up for the deficiency of prior art, and solves the problem that the previous radial air bearing is not firmly fixed in the radial direction and the axial direction and is easy to displace.

[0005] The utility model adopts the technical scheme that:

[0006] A positioning structure of radial air bearing, including bearing seat, the inner hole of bearing seat is installed with radial air bearing, one end of radial air bearing is equipped with bent part as fixed end, the other end is free end, the bent part is fixedly connected with positioning rod, one end of positioning rod is fixedly connected with bearing gland, bearing gland is fixedly connected with bearing seat, the side wall of bearing seat inner hole is equipped with the slot that is matched with bent part and positioning rod, the end of bearing seat inner hole side wall away from bearing gland is equipped with the stop table that is matched with radial air bearing.

[0007] The bent part is equipped with a plurality of fixed holes, and the positioning rod is connected with the bent part by inserting the column pin on the upper surface into the fixed hole.

[0008] The slot comprises a square slot and an arc slot which are communicated, the bending part and the positioning rod are inserted into the square slot, and the column pin is inserted into the arc slot.

[0009] The bearing pressure cover, the positioning rod and the column pin are integrally formed.

[0010] The bearing pressure cover is fixedly connected with the bearing seat through a plurality of screws.

[0011] The utility model discloses the above-mentioned scheme has the following advantages:

[0012] By setting the positioning rod in the slot of the bearing seat inner hole, the positioning rod fixes the bending part of the radial air bearing, the fixed installation of the bending part in the radial direction can be realized, and displacement of the bending part in the radial direction is effectively avoided; the two ends of the radial air bearing are limited by the bearing pressure cover and the retaining table, the fixed installation of the radial air bearing in the axial direction can be realized, and displacement of the radial air bearing in the axial direction is effectively avoided, thereby the stability of the radial air bearing during use is improved, and the supporting effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0014] Figure 2 It is the sectional structure schematic diagram of the utility model.

[0015] Figure 3 It is the three-dimensional structure schematic diagram of the bearing seat of the utility model.

[0016] Figure 4 It is the structure schematic diagram of the bearing pressure cover and the radial air bearing combination of the utility model.

[0017] Figure 5 It is the structure schematic diagram of the bearing pressure cover of the utility model.

[0018] In the drawing, 1, bearing seat, 2, radial air bearing, 3, bending part, 4, positioning rod, 5, bearing pressure cover, 6, retaining table, 7, column pin, 8, square slot, 9, arc slot. DETAILED DESCRIPTION

[0019] In order to clearly illustrate the technical features of the scheme, the utility model is described in detail below through specific implementation mode, and is combined with its drawings.

[0020] For example, Figures 1-5As shown, a positioning structure of a radial air bearing, comprising a bearing seat 1, an inner hole of the bearing seat 1 is provided with a radial air bearing 2, one end of the radial air bearing 2 is provided with a bending part 3 as a fixed end, the other end is a free end, the bending part 3 is fixedly connected with a positioning rod 4, one end of the positioning rod 4 is fixedly connected with a bearing pressing cover 5, the bearing pressing cover 5 is fixedly connected with the bearing seat 1, the inner hole side wall of the bearing seat 1 is provided with a slot matched with the bending part 3 and the positioning rod 4, one end of the inner hole side wall of the bearing seat 1 away from the bearing pressing cover 5 is provided with a stop table 6 matched with the radial air bearing 2.

[0021] The bending part 3 is provided with a plurality of fixing holes, the positioning rod 4 is connected with the bending part 3 by inserting a column pin 7 on the positioning rod 4 into the fixing hole.

[0022] The slot comprises a square slot 8 and an arc-shaped slot 9 connected with each other, the bending part 3 and the positioning rod 4 are inserted into the square slot 8, and the column pin 7 is inserted into the arc-shaped slot 9.

[0023] The bearing pressing cover 5, the positioning rod 4 and the column pin 7 are integrally formed.

[0024] The bearing pressing cover 5 is fixedly connected with the bearing seat 1 through a plurality of screws.

[0025] Working principle:

[0026] When installing, the column pin 5 on the positioning rod 4 is inserted through the fixing hole on the bending part 3, the bearing pressing cover 5, the positioning rod 4 and the radial air bearing 2 are assembled into one body, then the above-mentioned combination is assembled with the bearing seat 1, so that the radial air bearing 2 is located in the inner hole of the bearing seat 1, the bending part 3 and the positioning rod 4 are inserted into the square slot 8, the column pin 7 is inserted into the arc-shaped slot 9, finally the bearing pressing cover 5 is fixedly connected with the bearing seat 1 through a plurality of screws, and the assembly between the radial air bearing 2 and the bearing seat 1 is completed. The positioning rod 4 fixes the bending part 3 in the square slot 8, so that the bending part 3 can be fixedly installed in the radial direction, and displacement of the bending part 3 in the radial direction is effectively avoided; the bearing pressing cover 5 and the stop table 6 limit the two ends of the radial air bearing 2, so that the radial air bearing 2 can be fixedly installed in the axial direction, and displacement of the radial air bearing 2 in the axial direction is effectively avoided, thereby improving the stability of the radial air bearing 2 during use and ensuring the supporting effect.

[0027] The above specific embodiment cannot be regarded as a limitation on the protection scope of the utility model, and any alternative improvement or change made by the person skilled in the art to the utility model embodiment falls within the protection scope of the utility model.

[0028] The parts not described in the utility model are the known technology of the person skilled in the art.

Claims

1. A positioning structure for a radial air bearing, characterized by: The bearing seat is provided with an inner hole in which a radial air bearing is mounted, one end of the radial air bearing is provided with a bent part as a fixed end, the other end is a free end, the bent part is fixedly connected with a positioning rod, one end of the positioning rod is fixedly connected with a bearing gland, the bearing gland is fixedly connected with the bearing seat, the inner hole side wall of the bearing seat is provided with a slot matched with the bent part and the positioning rod, and the inner hole side wall of the bearing seat away from the bearing gland is provided with a stop table matched with the radial air bearing.

2. A positioning structure for a radial air bearing as claimed in claim 1, characterized in that: The bent part is provided with a plurality of fixing holes, and the positioning rod is connected with the bent part by inserting a column pin on the positioning rod into the fixing holes.

3. A positioning structure for a radial air bearing as claimed in claim 2, wherein: The slot comprises a square slot and an arc-shaped slot which are connected, the bent part and the positioning rod are inserted into the square slot, and the column pin is inserted into the arc-shaped slot.

4. The positioning structure of a radial air bearing according to claim 2, wherein: The bearing gland, the positioning rod and the column pin are integrally formed.

5. The positioning structure of a radial air bearing according to claim 1, wherein: The bearing gland is fixedly connected with the bearing seat by a plurality of screws.

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