Air floatation rotating shaft with uniformly distributed radial bearing air holes and certain deviation

Abstract

The utility model discloses an air floatation rotating shaft with uniformly distributed radial bearing air holes and certain deviation, which comprises a rotating shaft, a radial bearing is arranged on the outer side of the rotating shaft, a spacer bush is arranged on the radial bearing, a grinding wheel connecting rod seat is arranged on one side of the rotating shaft, and a rotor is arranged at one end, far away from the grinding wheel connecting rod seat, of the rotating shaft. A plurality of radial bearing air holes are formed in the radial bearing; by means of the throttling air nozzle, the annular groove air cavity and the radial bearing air hole, when the rotating shaft generates heat through friction during high-speed rotation, rotating airflow reduces friction resistance and power consumption, heat is reduced, the throttling air nozzle is eccentrically arranged, an annular air cavity is formed in an outlet of the radial bearing air nozzle, and compressed air is sprayed out of the air nozzle to form an air pressure bearing rotating shaft in the annular air cavity. Meanwhile, as the air tap is intentionally eccentrically processed to generate rotating airflow to drive the rotating shaft to rotate, the frictional resistance and the power consumption are reduced, the non-centering airflow is beneficial to inhibiting unstable excitation of the rotating shaft, and the impact force and the impact current of acceleration driving of the rotating shaft are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air-floating rotating shafts, in particular to an air-floating rotating shaft with radial bearing air holes evenly distributed and a certain offset. Background Art

[0002] When the air-floating shaft rotates at high speed, heat is generated and concentrated in the shaft. If the heat cannot be discharged, it will not only affect the life of the shaft, but also the efficiency of the shaft. Therefore, the shaft needs to be cooled. Utility Model Content

[0003] The purpose of the utility model is to provide a radial bearing with uniformly distributed air holes and a certain offset air-floating shaft, so as to solve the problems raised in the above-mentioned background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a radial bearing air hole is evenly distributed with a certain offset air-floating rotating shaft, comprising a rotating shaft, a radial bearing is provided on the outside of the rotating shaft, a spacer is provided on the radial bearing, a grinding wheel connecting rod seat is provided on one side of the rotating shaft, a rotor is provided on the end of the rotating shaft away from the grinding wheel connecting rod seat, a plurality of radial bearing air holes are opened on the radial bearing, a throttling air nozzle is provided on one side of the radial bearing air hole, and an annular groove air cavity is provided at the outlet of the throttling air nozzle.

[0005] Preferably, the radial bearing pores are radially distributed with the axis as the center.

[0006] Preferably, the throttle nozzle is eccentrically arranged in a counterclockwise order.

[0007] Compared with the prior art, the beneficial effects of the present invention are as follows: when the shaft generates frictional heat during high-speed operation through the throttle air nozzle, the annular groove air cavity and the radial bearing air hole, the rotating air flow reduces the frictional resistance and power consumption, thereby reducing heat; the throttle air nozzle is eccentrically set, and the radial bearing air nozzle outlet is provided with an annular air cavity; compressed air is ejected from the air nozzle to form a pneumatic bearing shaft in the annular air cavity; at the same time, due to the intentional eccentric processing of the air nozzle, a rotating air flow is generated to drive the shaft to rotate, and reduce frictional resistance and power consumption; the non-center air flow helps to suppress unstable excitation of the shaft and reduce the impact force and impact current of the accelerated drive of the shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0009] Figure 2 It is a schematic planing diagram of the utility model;

[0010] Figure 3 This is a schematic diagram of the planing at B of the present invention;

[0011] Figure 4This is an enlarged view of the structure of location I of the present invention.

[0012] In the figure: 1. rotating shaft; 2. radial bearing; 3. spacer; 4. grinding wheel connecting rod seat; 5. rotor; 6. radial bearing air hole; 7. throttle air nozzle; 8. ring groove air cavity. DETAILED DESCRIPTION

[0013] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0014] Please refer to 1-4, an embodiment provided by the utility model: a radial bearing air hole is evenly distributed with a certain offset air-floating shaft, including a shaft 1, a radial bearing 2 is provided on the outside of the shaft 1, a spacer sleeve 3 is provided on the radial bearing 2, a grinding wheel connecting rod seat 4 is provided on one side of the shaft 1, a rotor 5 is provided on the end of the shaft 1 away from the grinding wheel connecting rod seat 4, a plurality of radial bearing air holes 6 are provided on the radial bearing 2, a throttling air nozzle 7 is provided on one side of the radial bearing air hole 6, and an annular groove air cavity 8 is provided at the outlet of the throttling air nozzle 7. The external air flow enters the throttling air nozzle 7 through the radial bearing air hole 6, and the air flow forms a pneumatic bearing main shaft with a rotating air flow in the annular groove air cavity 8 at the outlet of the throttle air nozzle 7, thereby reducing the friction between the compressed air and the bearing and the shaft, reducing the frictional heat and power consumption, and the air flow is discharged through the shaft 1, taking away the heat, further reducing the heat.

[0015] The radial bearing air holes 6 are evenly and eccentrically distributed radially with the axis as the center, so as to facilitate the entry of airflow.

[0016] The throttle air nozzle 7 is eccentrically set in a counterclockwise direction. The eccentric processing generates a rotating airflow to drive the shaft to rotate. The non-center airflow helps to suppress the unstable vibration of the shaft, reduce the impact force and impact current of the shaft acceleration drive, and reduce power consumption.

Claims

1. A radial bearing with uniformly distributed air holes and a certain offset air-floating shaft, comprising a shaft (1), characterized in that: A radial bearing (2) is provided on the outer side of the rotating shaft (1), a spacer sleeve (3) is provided on the radial bearing (2), a grinding wheel connecting rod seat (4) is provided on one side of the rotating shaft (1), a rotor (5) is provided on the end of the rotating shaft (1) away from the grinding wheel connecting rod seat (4), a plurality of radial bearing air holes (6) are provided on the radial bearing (2), a throttle air nozzle (7) is provided on one side of the radial bearing air hole (6), and an annular groove air cavity (8) is provided at the outlet of the throttle air nozzle (7).

2. The radial bearing with uniformly distributed air holes and a certain offset air-floating shaft according to claim 1, characterized in that: The radial bearing pores (6) are distributed radially with the axis as the center.

3. The radial bearing with uniformly distributed air holes and a certain offset air-floating shaft according to claim 1, characterized in that: The throttle nozzle (7) is eccentrically arranged in a counterclockwise order relative to the parallel center line of the counterclockwise rotating shaft.

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