Air-oil cooling high-thrust lubrication bearing device for motor

Abstract

The utility model discloses an air-oil cooling high-thrust lubrication bearing device for a motor. The air-oil cooling high-thrust lubrication bearing device comprises a centrifugal cooling fan, a motor main shaft, a thrust bearing outer bush, a thrust bearing inner bush, a bearing base shell, an oil level observer, lubricating oil, a fixing shaft clamping ring, an outer fan guide plate, a cooling pipe, a bearing insulation seat and a bearing temperature measuring PT-100. The centrifugal cooling fan is connected with a motor spindle through a key; a rotor is installed on a motor spindle and connected with a load, and the dead weight of the rotor and the external load are transmitted to a high-thrust bearing through a fixing clamping ring. The thrust bearing outer bush and the thrust bearing inner bush are mounted in the bearing base shell; the lubricating oil is placed in the bearing; an oil level observer is arranged outside the bearing, and the internal oil supply condition and the oil quality can be accurately judged through the observer; and the outer fan guide plate is connected with the bearing base shell. The device is reasonable in structure, easy to maintain and convenient to operate, the service life of the high-thrust bearing is prolonged, and the reliability of the vertical large motor is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to high thrust bearing technical field, concretely is a kind of high thrust lubricated bearing device for oil cooling of motor. BACKGROUND

[0002] Large vertical low-speed motor is often heavy rotor, external load is big, most motors also need to bear the large axial force generated by site equipment.Ordinary rolling bearing cannot meet the requirement of large load at this time, and thrust bearing bush needs to be used, and oil lubrication cooling mode is used to meet the operation requirement of motor.

[0003] When high thrust bearing operates, external axial load needs to be transmitted to thrust bearing inner tile (lower tile) by thrust bearing outer tile (upper tile), at this time, bearing outer tile rotates with motor rotor, bearing inner tile is fixed, and a large amount of heat is generated between inner and outer tile friction, if these friction heat cannot be dissipated in time, oil film between tile will be difficult to play the role of lubrication and reduce wear.

[0004] This problem seriously affects the service life of motor bearing, and also increases the failure rate of motor.

[0005] Based on the above reasons, it is necessary to improve the short service life of bearing, high motor failure rate and other problems caused by the difficulty in reducing the temperature of bearing lubricating oil. INVENTION CONTENTS

[0006] In view of the above problems existing in prior art, the utility model provides a kind of high thrust lubricated bearing device for oil cooling of motor, to solve the above technical problems.

[0007] In order to achieve the above purpose, the utility model adopts the technical scheme: a kind of high thrust lubricated bearing device for oil cooling of motor, including centrifugal cooling fan, motor main shaft, thrust bearing outer tile, thrust bearing inner tile, bearing base shell, oil level observer, lubricating oil, fixed shaft snap ring, outer fan guide plate, cooling pipe, bearing insulation base, bearing temperature measuring PT-100;The centrifugal cooling fan is connected with motor main shaft by key;The motor main shaft is installed rotor and connected with load, and the weight of rotor and external load are transmitted to high thrust bearing by fixed snap ring;The thrust bearing outer tile and thrust bearing inner tile are installed in the inside of bearing base shell;The lubricating oil is placed in the inside of bearing;And oil level observer is equipped in the outside of bearing, and the inside oil supply condition and oil quality can be accurately judged by the observer;The outer fan guide plate is connected with bearing base shell.

[0008] Further, the cooling pipe adopts heat dissipation aluminum pipe with outer diameter of 22mm and wall thickness of 1mm, the pipeline adopts modular expansion sleeve installation, 24 aluminum pipes in each module, a total of 4 modules.

[0009] Further, the bearing temperature measuring PT-100 is respectively arranged on the outer tile of the thrust bearing, the inner tile of the thrust bearing and lubricating oil, and is used for monitoring the temperature of each key position in the bearing.

[0010] Further, the bearing base shell is internally provided with a bearing insulation seat, which is used for forming insulation protection between the bearing and the motor body.

[0011] The device has the advantages of reasonable structure, easy maintenance, convenient operation, prolonged service life of the high-thrust bearing, improved reliability of the vertical large motor, and reduced risk and cost of electric bearing damage. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a sectional view of the air-oil cooling high-thrust lubricating bearing device for a motor.

[0013] Figure 2 It is a schematic view of the ventilation cooling system of the air-oil cooling high-thrust oil lubricating bearing.

[0014] Figure 3 It is a three-dimensional top view of the air-oil cooling high-thrust lubricating bearing device for a motor.

[0015] In the figure: 1, centrifugal cooling fan; 2, motor main shaft; 3, thrust bearing outer tile; 4, thrust bearing inner tile; 5, bearing base shell; 6, oil level observer; 7, lubricating oil; 8, fixed shaft snap ring; 9, outer fan guide plate; 10, cooling pipe; 11, bearing insulation seat; 12, bearing temperature measuring PT-100. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below through the drawings and examples. However, it should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the scope of the utility model.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

[0018] As Figure 1 , Figure 2 and Figure 3As shown, a high thrust lubricated bearing device for motor with oil cooling, comprising a centrifugal cooling fan 1, a motor main shaft 2, a thrust bearing outer tile 3, a thrust bearing inner tile 4, a bearing base shell 5, an oil level observer 6, lubricating oil 7, a fixed shaft clamp ring 8, an outer fan guide plate 9, a cooling pipe 10, an insulating bearing seat 11, and a bearing temperature measuring PT-100 12.

[0019] In this embodiment, the centrifugal cooling fan 1 is connected to the motor main shaft 2 by a key, and the motor main shaft 2 is connected to a rotor and a load, and the rotor gravity and external load are transmitted to the high thrust sliding bearing through the fixed clamp ring 8.

[0020] In this embodiment, the thrust bearing outer tile 3 and the thrust bearing inner tile 4 are installed inside the bearing base shell 5, the lubricating oil 7 is provided with an oil level observer 6 outside the bearing, and the internal oil supply and oil quality can be accurately judged through the observer.

[0021] In addition, in this embodiment, the outer fan guide plate 9 is connected to the bearing base shell 5, the bearing insulating seat 11 is installed inside the bearing base shell 5, and the bearing insulating seat 11 forms an insulating protection effect between the bearing and the motor body, and the bearing temperature measuring PT-100 12 is installed in the thrust bearing outer tile 3, the thrust bearing inner tile 4 and the lubricating oil 7, respectively, for monitoring the temperature of each key part inside the bearing.

[0022] Working principle: the use method of the present application comprises the following steps:

[0023] A, before the motor is operated, check whether the oil level and oil quality inside the bearing meet the requirements, confirm that the field parts are installed in place, and the fan and the air inlet and outlet are ventilated smoothly;

[0024] B, when the motor is started, pay attention to whether the field fan and other moving parts interfere with each other, and whether there is any abnormal noise when starting;

[0025] C, after the above actions are completed, when the motor is running stably, the oil level condition needs to be observed and recorded, and the PT-100 temperature measuring value of each part of the bearing needs to be recorded, and if there is any abnormality, the machine needs to be stopped for inspection.

[0026] In summary, the device has reasonable structure, is easy to maintain, convenient to operate, prolongs the service life of the high thrust bearing, improves the reliability of the vertical large motor, and reduces the risk and cost of bearing damage.

[0027] The above only describes the preferred embodiment of the present application, and is not intended to limit the present application, and any modification, equivalent replacement or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An oil-air cooled high thrust bearing assembly for electric machines, characterized in that, Including centrifugal cooling fan (1), motor main shaft (2), thrust bearing outer tile (3), thrust bearing inner tile (4), bearing base shell (5), oil level observer (6), lubricating oil (7), fixed shaft snap ring (8), outer fan guide vane (9), cooling pipe (10), bearing insulation base (11), bearing temperature PT-100 (12);The centrifugal cooling fan (1) is connected by key with motor main shaft (2);The motor main shaft (2) is installed rotor and is connected with load, and the rotor dead weight and external load are transmitted to high thrust bearing by fixed snap ring (8);The thrust bearing outer tile (3) and thrust bearing inner tile (4) are installed in the inside of bearing base shell (5);The lubricating oil (7) is placed in the inside of bearing;And the oil level observer (6) is arranged in the outside of bearing, and the inside oil supply condition and oil quality can be accurately judged by the observer;The outer fan guide vane (9) is connected with bearing base shell (5).

2. A high thrust oil cooled lubricated bearing assembly for electric machines as claimed in claim 1, wherein, The cooling pipe (10) adopts the heat dissipation aluminum pipe with 22mm outer diameter and 1mm wall thickness, the pipeline adopts modularized expansion sleeve installation, each module has 24 aluminum pipes, and there are 4 modules in total.

3. A high thrust oil lubricated bearing assembly for electric machines as claimed in claim 1, wherein, The bearing temperature PT-100 (12) is installed in thrust bearing outer tile (3), thrust bearing inner tile (4) and lubricating oil (7) respectively, and is used for monitoring the temperature of each key position in the inside of bearing.

4. A high thrust oil lubricated bearing assembly for electric machines as claimed in claim 1, wherein, The bearing base shell (5) is installed with bearing insulation base (11), which is used for forming insulation protection effect between bearing and motor body.

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