CN207864449U - A kind of novel bearing holder structure - Google Patents

Abstract

A new type of bearing seat structure, including a bearing upper seat and a bearing lower seat. The bearing device includes a bearing bush and an oil throwing ring and is installed in the bearing seat. The bearing bush is sleeved in the bearing seat. The bearing seat is composed of a bearing upper seat and a bearing lower seat. The lower seat of the bearing includes a bearing housing body, a bearing housing cavity and partitions fixed on the left and right sides of the bearing housing body, and the partition divides the bearing housing cavity into a left oil pool, a middle oil pool and a right oil pool, and the left The oil pool, the right oil pool and the middle oil pool are all connected to each other, and the oil throwing ring is set on the middle part of the bearing bush and is located in the middle oil pool of the bearing housing cavity. The special motor for the new pipeline pump improves the structure of the bearing seat, and divides the cavity of the bearing seat into the left oil pool and the right oil pool connected to each other, and forms a liquid level difference with the middle oil pool. When the oil throwing ring rotates, it drives the oil in the middle oil pool. To cool the bearing bush, under the left and right of the liquid level difference, the amount of oil driven by the oil throwing ring increases, the cooling effect on the bearing bush is better, and the self-lubricating effect is improved.

Description

A new structure of bearing seat

technical field

The utility model belongs to the technical field of self-lubricating bearings, in particular to a novel bearing housing structure for self-lubricating sliding bearings.

Background technique

There are two ways for sliding bearing lubrication. One is forced lubrication, which is an off-site gas station. Oil is supplied to the motor through the oil inlet and return pipes to cool the bearing bush of the sliding bearing. A large amount of heat, forced lubricating oil is equivalent to a lubricating medium, and also acts as a cooling medium. The cooling effect is good, but an external gas station is required, which increases additional costs, and the gas station occupies a certain amount of space on site; the other is self-lubricating , that is, there is no oil supply station on site. By manually refueling the motor bearings, this solution does not require an external gas station, which saves space and is convenient for users to maintain.

However, the rated speed of the 2P motor is 2980r/min, the speed is high, the heat on the rotating shaft is large, and the heat of the bearing pad is high, so the lubrication of the bearing pad is very critical. If the lubrication effect of the bearing pad is not good, the bearing pad will be burned. However, the temperature of the bearing pad in this way tends to be high, and the oil inside the bearing seat is simply used for lubrication, without heat exchange with temperature difference, and the heat dissipation effect of the bearing pad is poor.

Utility model content

The purpose of the utility model is to provide a new type of bearing seat structure for the current application of self-lubricating bearings, improve the structure of the bearing seat, and improve the self-lubricating effect of the bearing.

In order to solve the above technical problems, the technical solution adopted by the utility model is: the new bearing seat structure includes the bearing upper seat and the bearing lower seat, the bearing device includes the bearing bush and the oil throwing ring and is installed in the bearing seat, the bearing bush is sleeved on the bearing seat Inside, the bearing seat is composed of the bearing upper seat and the bearing lower seat. The bearing lower seat includes the bearing seat body, the bearing seat cavity and the partitions fixed on the left and right sides of the bearing seat body, and the partition board separates the bearing seat cavity. There are left oil pool, middle oil pool and right oil pool, and the left oil pool, right oil pool and middle oil pool are all connected to each other. The oil throwing ring is set in the middle part of the bearing bush and is located in the middle oil pool of the bearing seat cavity.

The lower part of the bearing seat body is provided with an oil discharge hole communicating with the cavity of the bearing seat, and the oil discharge hole is equipped with a sealing bolt.

The top of the bearing upper seat is provided with a vent hole for oil injection, and the vent hole is equipped with a vent nut for sealing.

A shaft shoulder is provided at the joint between the rotating shaft and the bearing device, and the outer surface of the rotating shaft between the shaft shoulders is a bearing platform, the surface roughness of the bearing platform is Ra0.40 μm, and the arc chamfer at the bearing platform and the shaft shoulder is R8.

The bearing body and the partition plate of the bearing lower seat are integrally formed.

The lower seat of the bearing is formed by casting.

The beneficial effects of the utility model are:

1) The special motor for the new pipeline pump improves the structure of the bearing seat, and divides the cavity of the bearing seat into the left oil pool and the right oil pool connected to each other, and forms a liquid level difference with the middle oil pool. When the oil throwing ring rotates, it drives the middle oil pool The oil is used to cool the bearing bush. Under the left and right of the liquid level difference, the amount of oil driven by the oil throwing ring increases, the cooling effect on the bearing bush is better, and the self-lubricating effect is improved;

2) The roughness of the bearing table surface and the improvement of the arc chamfer between the bearing table and the shaft shoulder reduce the stress concentration at the root of the shaft shoulder, improve the fluidity of lubrication on the bearing table surface, and improve the lubrication effect.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a structural schematic diagram of a bearing device;

Fig. 3 is the structural representation of rotor;

Fig. 4 is a schematic structural view of the air outlet cover;

Fig. 5 is a side view of the air outlet cover;

Fig. 6 is a structural schematic diagram of the shaft shoulder.

Detailed ways

The implementation of the present utility model is illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification.

See Figures 1 through 6. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the utility model Therefore, it has no technical substantive meaning. Any modification of structure, change of proportional relationship or adjustment of size shall still fall within the scope of The technical content disclosed by the utility model must be within the scope covered. At the same time, terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit this specification. The practicable range of the utility model, and the change or adjustment of its relative relationship, without any substantial change in the technical content, shall also be regarded as the practicable scope of the utility model.

The utility model provides a novel bearing seat structure, as shown in Fig. 2 . The new bearing seat structure includes a bearing upper seat and a bearing lower seat. The bearing device includes a bearing bush and an oil throwing ring and is installed in the bearing seat. The bearing bush is sleeved in the bearing seat. The bearing seat is composed of a bearing upper seat 23 and a bearing lower seat 24. The bearing lower seat 24 includes a bearing seat body 241, a bearing seat cavity, and partitions 242 fixed on the left and right sides of the bearing seat body 241, and the partition 242 separates the bearing seat cavity into a left oil pool 251 and a middle oil pool. 252 and the right oil pool 253, and the left oil pool 251, the right oil pool 253 and the middle oil pool 252 are all connected to each other. After the lubricating oil is added, the liquid surface is immersed in the lower port of the partition, and a liquid level difference is formed between the left oil pool 251, the middle oil pool 252 and the right oil pool 253 of the bearing lower seat, and the left oil pool 251 and the right oil pool 253 liquid levels The high level is consistent, and the middle liquid level is low. The oil throwing ring 22 is set on the middle part of the bearing bush 21. When the rotating shaft rotates, the oil throwing ring 22 is driven to rotate, and the lubricating oil in the middle oil pool 252 is driven to the inside of the bearing bush 21 for cooling. And lubricating oil forms oil film between bearing bush 21 and rotating shaft, avoids forming dry friction between bearing bush 21 and rotating shaft, causes bearing bush 21 temperature to burn too high; The liquid level of the lubricating oil in the middle oil pool 252 is different, forming a pressure difference and then causing a pressure difference. Due to the existence of the pressure difference, the oil throwing ring 22 is more likely to drive the lubricating oil, that is, the amount of oil driven by the oil throwing ring 22 per unit time increases. Furthermore, the cooling effect on the bearing pad 21 becomes better.

The top of the bearing upper seat 23 is provided with a vent hole 6 for oil injection, and the vent hole 6 is equipped with a vent nut 61 for sealing; the lower part of the bearing lower seat 24 is provided with an oil drain hole 62 communicating with the cavity of the bearing seat, And the oil drain hole 62 is equipped with a sealing bolt 63 . When oil needs to be filled, open the breather nut 61 to fill the cavity of the bearing seat through the oil drain hole 62, and immerse the liquid surface in the lower port of the partition; when the lubricating oil needs to be replaced after a certain period of time, open the sealing bolt at the lower part of the bearing seat body 63. Remove the waste oil in the oil pool of the bearing seat cavity through the oil drain hole 62. After all the waste oil is removed, tighten the sealing bolt 63, open the vent nut 61, and refill the lubricating oil.

The novel bearing housing structure in this embodiment is particularly suitable for use in a new type of special motor for pipeline pumps, as shown in FIGS. 1 to 6 . The special motor for the novel pipeline pump also includes a machine base 1, an inner fan 5, a stator 11 installed in the machine base 1, and a rotor 12 installed in clearance with the stator 11. The rotor 12 is fixedly installed on the rotating shaft 13, and the outer circumference of the stator core A plurality of cooling pipes 7 are fixed on the base, and the cooling pipes 7 communicate with the air outlet cover 51 provided at the end of the rotating shaft; A bearing device 2 is provided between the cover, the end cover and the rotating shaft, and the inner and outer sides of the bearing device 2 are respectively provided with a bearing inner cover and a bearing outer cover. A winding fan cover is provided, and in this embodiment, the outer fan 3 is an airfoil-shaped outer fan.

The meandering fan cover includes a first wind guide 41 arranged adjacent to the outer fan and a cylindrical second wind guide 42 axially fixed on the right side of the first wind guide 41 , and the first wind guide The central position of the right side wall of the cover 41 is provided with a central air vent; the first air guide cover 41 is provided with a deflector 411 that guides the air flow from the central air vent position to the cooling pipe 6; The upper row is provided with a plurality of air inlets 421, and the left side wall of the second wind guide cover 42 is axially sleeved with a rightward protruding windshield tube 422 at the central ventilation opening. Preferably, the second wind guide The right side wall of the cover 42 is equipped with a muffler 423, and the right side wall of the second wind guide cover 42 is also provided with an air guide ring protruding axially to the left on the inside of the air inlet for changing the air path. 424. Preferably, in order to improve the noise reduction effect, the deflector 411 , the windshield 422 and the wind guide ring 424 are all provided with sound-absorbing cotton.

Regarding the airfoil-shaped external fan, a specific introduction has been made in the utility model patent with the application number 2017209308695 titled "A Low-noise Airfoil Motor Centrifugal Fan".

When the external fan rotates, the external cold air enters from the air inlet of the winding fan cover and is transmitted to the left under the obstruction of the air guide ring, and then is transmitted to the right end under the obstruction of the windshield, and passes through the second air guide cover The sound-absorbing device on the right side wall changes the wind path and transmits it to the left through the central vent, and is transmitted to the cooling pipe under the action of the deflector, and finally exported through the air outlet cover. When the inner fan rotates, the internal air flow is transmitted from the inner fan to the axial air duct of the rotor, and then through the radial air duct of the stator, through the stator core, to the gap between the cooling pipes and to the left and right sides. The cold air in the tube undergoes heat exchange, and the airflow after heat exchange returns to the inner fan under the obstruction of the machine base and the end cover. The setting of the meandering fan cover, the outer fan and the inner fan enables the external cold air to exchange heat with the hot air inside the motor to reduce heat. The road is equipped with sound-absorbing cotton for sound-absorbing treatment, and the noise reduction effect is improved.

The rotor 12 is a cast aluminum rotor, and a balance ring 121 is arranged axially symmetrically on the shaft between the inner fan and the cast aluminum rotor, and a balance ring 121 is arranged on the upper and lower sides of the radial direction of the shaft, and a balance ring 121 is arranged on the balance ring 121. There is a wedge-shaped groove 122 in which the balance weight can be fixed. The application of the cast aluminum rotor reduces the weight of the rotor, reduces the load on the bearing pad, reduces the calorific value, and then reduces the temperature of the bearing pad to improve the balance of the rotor operation. The upper and lower side weights are adjustable, and the overall running stability of the rotor 12 is improved.

The air outlet cover 51 provided at the shaft extension end of the rotating shaft 13 is composed of a vertically arranged cylindrical cover body 512 and a cover body air outlet 513 that is smoothly transitioned and fixedly connected to the top of the cylindrical cover body 512, and the cover body air outlet 513 is directed to The right side is arranged, and the air passage of air outlet cover 51 is all provided with sound-absorbing cotton. The structure of the air outlet cover has been specifically introduced in the utility model patent with the application number 2017209379012 titled "A Low Noise Rear Air Outlet Air Cover for a Motor".

A shaft shoulder 131 is provided at the joint between the rotating shaft 13 and the bearing device. The outer surface of the rotating shaft between the shaft shoulders 131 is a bearing platform 132. The surface roughness of the bearing platform 132 is Ra0.40 μm. The chamfer is R8, which reduces the stress concentration at the root of the shaft shoulder 131 and improves the lubricating effect. The most preferred lubricating oil viscosity is ISOVG32.

In order to improve the rigidity of the bearing seat, the bearing body and the partition plate of the bearing lower seat are integrally formed. In this embodiment, the bearing lower seat is poured by a casting process.

If words such as "first" and "second" are used in this patent to define components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the utility model and simplifying Description, the above words have no special meaning.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. The utility model does not depart from the spirit and scope of the utility model There will also be various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and equivalents.

Claims (6)

1. a kind of novel bearing holder structure, including the bearing seat of honour and bearing base, bearing arrangement includes bearing shell and disc and pacifies Loaded in bearing block, axle bush sleeve is set in bearing block, and bearing block is made of the bearing seat of honour and bearing base, it is characterised in that：Institute It includes bearing block ontology, bearing block cavity and the partition board being fixedly arranged at left and right sides of bearing block ontology to state bearing base, and partition board Bearing block cavity is divided into left oil sump, middle oil sump and right oil sump, and left oil sump, right oil sump are connected to setting with middle oil sump, get rid of Oil ring is set in the intermediate position of bearing shell and in the middle oil sump of bearing block cavity.

2. a kind of novel bearing holder structure according to claim 1, it is characterised in that：The lower part of the bearing block ontology is set There is the drain oil communicated with bearing block cavity, and drain oil is equipped with sealing bolt.

3. a kind of novel bearing holder structure according to claim 1, it is characterised in that：It is opened up at the top of the bearing seat of honour It is useful for the venthole of oiling, and venthole is equipped with the ventilation nut for sealing.

4. a kind of novel bearing holder structure according to any one of claims 1 to 3, it is characterised in that：Shaft and bearing arrangement Cooperation at be equipped with the shaft shoulder, the shaft outer surface between the shaft shoulder is pedestal, and the roughness on pedestal surface is Ra0.40 μm, bearing Platform is R8 with the circular arc chamfering at the shaft shoulder.

5. a kind of novel bearing holder structure according to claim 4, it is characterised in that：The bearing body of the bearing base It is integrally formed with partition board.

6. a kind of novel bearing holder structure according to claim 5, it is characterised in that：The bearing base is used and is cast as Type.