Bearing lubricating oil sealing structure suitable for high-speed motor

Abstract

The utility model relates to a bearing lubricating oil sealing structure suitable for a high-speed motor, which comprises a motor, a driving shaft assembly mounted on the motor, a bearing device sleeved on the driving shaft assembly, an embedded positioning mechanism connected to the outer side of the bearing device, an end cover connected to the bearing device, and an oil distributing mechanism and an oil returning mechanism arranged in the end cover, an oil inlet hole is formed in the side, close to the bearing device, of the embedded positioning mechanism, an oil outlet hole is further formed in one side of the embedded positioning mechanism, an infiltration channel is formed between the oil inlet hole and the oil outlet hole, and the bearing device is located in the infiltration channel. Therefore, the oil separation mechanism and the oil return mechanism which are independent are arranged, and lubricating oil which may overflow during operation is collected layer by layer and flows back to the bearing device. In this way, final overflow of the lubricating oil is avoided, and self-lubrication during operation is met. And a proper end cover can be selected for a high-speed motor, so that the implementation is convenient, and the universality is better.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lubricating sealing structure with recycling function, especially to a bearing lubricating oil sealing structure suitable for high-speed motor. BACKGROUND

[0002] For the existing high-speed motor, in order to meet the continuous stable operation, the bearing mechanism or the motor main shaft mechanism is often fully lubricated with lubricating oil. However, during actual operation, the lubricating oil will overflow through the tolerance structure such as the joint gap of the motor main shaft, resulting in the need for continuous replenishment of lubricating oil. At the same time, under high working conditions of high-speed operation, due to external factors such as rotational centrifugal force, the replenished lubricating oil cannot meet the full immersion, there are lubrication dead angles, which affect the continuous operation of the high-speed motor. Moreover, the overflowing lubricating oil will pollute the driving area, which needs to be cleaned during shutdown, and cannot meet the long-time operation requirement.

[0003] Moreover, considering the need for heat dissipation during operation, an independent lubricating oil discharge channel is often configured. However, the existing channel structure is not reasonable, resulting in improper overflow of lubricating oil on one side and premature discharge of lubricating oil on the other side before the bearing mechanism is fully immersed.

[0004] In view of the above-mentioned defects, the present design person actively researches and innovates to create a bearing lubricating oil sealing structure suitable for high-speed motor, which has more industrial utilization value. INVENTION CONTENTS

[0005] To solve the above technical problems, the purpose of the utility model is to provide a bearing lubricating oil sealing structure suitable for high-speed motor.

[0006] The bearing lubricating oil sealing structure suitable for high-speed motor of the utility model comprises a motor, the motor is provided with a driving shaft assembly, wherein: a bearing device is connected to the driving shaft assembly, an embedding positioning mechanism is connected to the outer side of the bearing device, an end cover is further connected to the bearing device, an oil distribution mechanism and an oil return mechanism are arranged in the end cover, an oil inlet hole is arranged on the side of the embedding positioning mechanism close to the bearing device, an oil outlet hole is further arranged on the side of the embedding positioning mechanism, an immersion channel is formed between the oil inlet hole and the oil outlet hole, and the bearing device is located in the immersion channel.

[0007] Further, the bearing lubricating oil sealing structure suitable for high-speed motor, wherein the embedding positioning mechanism is an embedding mounting block, a driving shaft hole for connecting the driving shaft assembly is reserved on the embedding mounting block, and the edge of the embedding mounting block is threadedly connected or welded with the side end of the motor.

[0008] Further, the bearing lubricating oil sealing structure for high-speed motor, wherein the embedded installation block is provided with a plurality of reinforcing ribs.

[0009] Further, the bearing lubricating oil sealing structure for high-speed motor, wherein the oil distribution mechanism is a plurality of equidistantly distributed oil distribution grooves, the oil distribution grooves are in contact with the driving shaft assembly, the oil distribution grooves are provided with an oil return mechanism, the oil return mechanism is an oil return groove hole in communication with the oil distribution grooves, and the oil return groove hole is in communication connection with the bearing device.

[0010] Further, the bearing lubricating oil sealing structure for high-speed motor, wherein the diameter of the oil return groove hole is smaller than the width of the oil distribution groove.

[0011] Further, the bearing lubricating oil sealing structure for high-speed motor, wherein the end cover is connected with a limiting plate, and the limiting plate is in contact with the embedded positioning mechanism.

[0012] By the above scheme, the utility model has at least the following advantages:

[0013] 1. The independent oil distribution mechanism and oil return mechanism are provided, the lubricating oil possibly overflowing during operation is collected layer by layer and returned to the bearing device. In this way, the final overflow of the lubricating oil is avoided, and the self-lubrication during operation is met.

[0014] 2. The appropriate end cover can be selected for the high-speed motor, the implementation is facilitated, and the universality is better.

[0015] 3. The end cover has a simple structure, is easy to process, and has low implementation cost.

[0016] 4. Under the cooperation of the oil inlet hole and the oil outlet hole, the lubrication needs of the bearing device and the driving shaft assembly under different working conditions can be met, and the timely supplement, heat dissipation and discharge of the lubricating oil are realized.

[0017] The above description is only a summary of the technical scheme of the utility model, in order to more clearly understand the technical means of the utility model, and the content of the specification can be implemented. The following is a detailed description of the preferred embodiments of the utility model and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the bearing lubricating oil sealing structure for high-speed motor.

[0019] The meanings of the reference signs in the drawings are as follows.

[0020] 1 motor 2 driving shaft assembly

[0021] 3 bearing device 4 end cover

[0022] 5 oil inlet hole 6 oil outlet hole

[0023] 7 embedded mounting block 8 reinforcing rib

[0024] 9 oil distribution groove 10 oil return groove hole

[0025] 11 limiting plate DETAILED DESCRIPTION

[0026] The specific embodiments of the utility model will be described in further detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but not to limit the scope of the utility model.

[0027] As Figure 1 The bearing lubricating oil sealing structure suitable for high-speed motor comprises a motor 1, the motor 1 is provided with a driving shaft assembly 2, which is used to drive external equipment. The difference from the prior art is that the driving shaft assembly 2 is sleeved with a bearing device 3, the outer side of the bearing device 3 is connected with an embedded positioning mechanism, which is used to realize the relative positioning of the bearing device 3. In order to effectively collect and return the lubricating oil overflowing outside during the operation of the bearing device 3, an end cover 4 is further connected to the bearing device 3, and the end cover 4 is provided with an oil distribution mechanism and an oil return mechanism. In this way, the overflowing lubricating oil can be collected by the oil distribution mechanism step by step, and then returned to the end cover 4 again under the cooperation of the oil return mechanism, so as to avoid overflowing again and meet the circulation of lubricating oil.

[0028] At the same time, in order to meet the control of the lubricating oil in and out, the amount of lubricating oil can be adjusted in real time, and the bearing device 3 can have different lubricating oil infiltration under different working conditions, an oil inlet hole 5 is formed on the side of the embedded positioning mechanism close to the bearing device 3, an oil outlet hole 6 is further formed on the side of the embedded positioning mechanism, the oil inlet hole 5 and the oil outlet hole 6 form an infiltration channel, and the bearing device 3 is located in the infiltration channel. In this way, when the lubricating oil is saturated or expands due to heat, the saturation adhesion can be avoided by appropriately discharging through the oil outlet hole 6. When the lubricating oil is about to be insufficient, it can be supplemented in time through the oil inlet hole 5.

[0029] In combination with a preferred embodiment of the utility model, the embedded positioning mechanism is an embedded mounting block 7, which can be integrally combined with the bearing device 3. At the same time, the embedded mounting block 7 is provided with a driving shaft hole connected with the driving shaft assembly 2, which does not affect the operation of the driving shaft assembly 2. Moreover, considering different installation and combination requirements, the edge of the embedded mounting block 7 is threadedly connected or welded with the side end of the motor 1. In order to avoid improper deformation of the embedded mounting block 7 under high-speed operation, the embedded mounting block 7 is not vibrated due to deformation, and a plurality of reinforcing ribs 8 are distributed on the embedded mounting block 7.

[0030] Looking further, the oil separation mechanism adopted by the present invention is a number of oil separation grooves 9 distributed at equal distances, and the oil separation grooves 9 are in contact with the drive shaft assembly 2. In this way, the lubricating oil overflowing from the drive shaft assembly 2 can be collected step by step through each oil separation groove 9. At the same time, an oil return mechanism is distributed between the oil separation grooves 9, and the oil return mechanism is an oil return groove hole 10 that is mutually conductive with the oil separation groove 9, and the oil return groove hole 10 is conductively connected to the bearing device 3. In this way, the lubricating oil overflowing can flow into the bearing device 3 again through the guidance of the oil return groove hole 10. During use, in order to avoid abnormal recovery of excessive lubricating oil in the drive shaft assembly 2 under normal lubrication conditions, the diameter of the oil return groove hole 10 is smaller than the width of the oil separation groove 9. In this way, only when each oil separation groove 9 is about to be filled and saturated step by step, can the oil return groove hole 10 realize the recovery of lubricating oil.

[0031] Furthermore, end cap 4 is connected to a limit plate 11, which contacts the embedded positioning mechanism. This properly limits the end cap 4, preventing vibration caused by centrifugal force at high speeds. During operation, the limit plate 11 evenly transfers any vibration stress to the embedded positioning mechanism for proper dissipation.

[0032] The working principle of this utility model is as follows:

[0033] During operation, lubricating oil is injected through the oil inlet 5 to lubricate the corresponding devices. Simultaneously, the highly heated, lubricated oil is discharged through the oil outlet 6 and then injected again after the external devices have completed their cooling cycle. This ensures that the high-speed motor 1 is always within the appropriate operating temperature range and provides adequate lubrication.

[0034] When the volume of lubricating oil increases due to changes in operating conditions, or when lubricating oil overflows due to tolerances in the assembly of the drive shaft assembly 2, the oil distribution tank 9 can gradually recover the overflowed lubricating oil. The oil return mechanism then redirects the oil back to the bearing assembly 3, preventing any overflow and maintaining the self-lubricating effect during the recovery period.

[0035] At the same time, through such reflux, effective and sufficient infiltration effect can be achieved, and even if the lubricating oil is dissipated outside, there will be no dead corners of infiltration.

[0036] It can be seen from the above text description and the accompanying drawings that the present invention has the following advantages:

[0037] 1. Equipped with independent oil separation and return mechanisms, the lubricating oil that may overflow during operation is collected layer by layer and returned to the bearing device. This prevents the lubricating oil from eventually overflowing and ensures self-lubrication during operation.

[0038] 2. The end cover can be selected according to the high-speed motor, and the implementation is convenient and the universality is better.

[0039] 3. The end cover has simple structure, is easy to process and has low implementation cost.

[0040] 4. The oil inlet hole and the oil outlet hole can meet the lubrication needs of the bearing device and the driving shaft assembly under different working conditions, and realize timely supplement and heat dissipation of the lubricating oil.

[0041] In addition, the indicated direction or position relationship described in the utility model is based on the direction or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or structure must have a specific direction or be operated in a specific direction, so it cannot be understood as a limitation on the utility model.

[0042] The above is only the preferred embodiment of the utility model, and is not used to limit the utility model, and it should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made without departing from the technical principles of the utility model, and these improvements and modifications should also be regarded as the protection range of the utility model.

Claims

1. A bearing lubricant seal structure for high speed electric machines, comprising an electric machine, said electric machine having a drive shaft assembly mounted thereto, characterised in that: The driving shaft assembly is sleeved with a bearing device, the outer side of the bearing device is connected with an embedded positioning mechanism, an end cover is further connected to the bearing device, an oil distribution mechanism and an oil return mechanism are arranged in the end cover, an oil inlet hole is arranged on the side of the embedded positioning mechanism close to the bearing device, an oil outlet hole is further arranged on the side of the embedded positioning mechanism, the oil inlet hole and the oil outlet hole form an infiltration channel, and the bearing device is located in the infiltration channel.

2. The bearing lubricating oil seal structure for a high speed motor according to claim 1, characterized by: The embedded positioning mechanism is an embedded mounting block, a driving shaft hole for connecting the driving shaft assembly is reserved on the embedded mounting block, and the edge of the embedded mounting block is threadedly connected or welded to the side end of the motor.

3. The bearing lubricating oil seal structure for a high speed motor according to claim 2, characterized by: The embedded mounting block is provided with a plurality of reinforcing ribs.

4. The bearing lubricating oil seal structure for a high speed motor according to claim 1, characterized by: The oil distribution mechanism is a plurality of equidistantly distributed oil distribution grooves, the oil distribution grooves are in contact with the driving shaft assembly, the oil distribution grooves are provided with the oil return mechanism therebetween, the oil return mechanism is an oil return groove hole which is in communication with the oil distribution grooves, and the oil return groove hole is in communication connection with the bearing device.

5. The bearing lubricating oil seal structure for a high speed motor according to claim 4, characterized in that: The diameter of the oil return groove hole is smaller than the width of the oil distribution groove.

6. The bearing lubricating oil seal structure for a high speed motor according to claim 1, characterized by: The end cover is connected with a limiting plate, and the limiting plate is in contact with the embedded positioning mechanism.

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