Bearing assembly of high-speed motor

Abstract

The bearing assembly comprises a shaft rod piece, a bearing piece, an end cover, an adding pipe and a discharging pipe, the shaft rod piece comprises a shaft rod middle section and a shaft rod end portion, the bearing piece comprises an outer steel ring and an inner steel ring, and rolling limiting grooves are formed in the inner wall of the outer steel ring and the outer wall of the inner steel ring. Balls are connected into the rolling limiting grooves in a rolling mode, an elastic washer is arranged on the outer wall of one side of the outer steel ring, and the elastic washer makes contact with the end cover. When the bearing assembly is detached from the high-speed motor, the end cover is detached from the high-speed motor, and the end cover is moved out of the insertion column, so that the bearing assembly can be detached from the high-speed motor, the bearing assembly is convenient to overhaul and replace, and when the high-speed motor is normally used, the inner steel ring is clamped in the groove in the middle section of the shaft rod, so that the bearing assembly is convenient to maintain and replace. And the elastic washer has an abutting force on the outer steel ring, so that the stability of the shaft rod piece and the bearing piece in the high-speed motor can be ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to high -speed motor technical field, concretely relates to a bearing assembly of high -speed motor. BACKGROUND

[0002] High -speed motor usually refers to the motor of the speed more than 10000r / min, they have the following advantages: first, because the speed is high, so the motor power density is high, and the volume is far less than the power ordinary motor, can effectively save material, second, can be connected with the prime mover, cancel the traditional speed reduction mechanism, transmission efficiency is high, noise is small, three, because the high -speed motor moment of inertia is small, so dynamic response is fast, bearing assembly is the component inside high -speed motor.

[0003] Such as the announcement number for CN112032206B, the announcement day is August 5, 2022 a kind of bearing assembly, including outer ring bearing, the side end outer surface of outer ring bearing is provided with limiting piece, fixed hole is embedded in the outer surface of limiting piece, the side end outer surface of limiting piece is provided with hexagon nut, the side end outer surface of hexagon nut is provided with transmission shaft, the outer surface of transmission shaft is embedded with bolt, the side end outer surface of bolt is provided with fixed ring, the inner side outer surface of outer ring bearing is embedded with clamping groove, the side end outer surface of outer ring bearing is provided with ball.

[0004] The above and in prior art, when fixing bearing assembly, it is usually using the way of excess connection to fix bearing assembly on the end cover of high -speed motor, but the fixed mode structure is complex, not easy to take off bearing assembly from high -speed motor, it is very inconvenient to overhaul and replace bearing assembly, therefore, urgently need to design a kind of bearing assembly of high -speed motor to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of bearing assembly of high -speed motor to solve the above deficiencies in prior art.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of bearing assembly of high -speed motor, including shaft rod piece, bearing piece, end cover, addition pipe and discharge pipe, the shaft rod piece includes shaft rod middle section and shaft rod end, the bearing piece includes outer steel ring and inner steel ring, and the inner wall of outer steel ring and the outer wall of inner steel ring are all provided with rolling limit slot, and steel ball is connected with rolling in the inside of rolling limit slot, the outer wall of the one side of outer steel ring is provided with elastic washer, and elastic washer is in contact with end cover, the recess of the shaft rod middle section of inner steel ring is set, the outer wall of outer steel ring is provided with insertion post, and the outer wall of end cover is provided with insertion hole, the insertion post is inserted in the inside of insertion hole, the outer wall of outer steel ring is provided with the friction ring that is attached with the inner wall of end cover.

[0008] Further, the adding pipe and the discharging pipe are both through the end cover and the outer steel ring, and the bottom end of the adding pipe is between the outer steel ring and the inner steel ring.

[0009] Further, the inner wall of the bottom of the outer steel ring is respectively provided with a leakage groove one and a leakage groove two, and the leakage groove one and the leakage groove two are both bowl-shaped structures.

[0010] Further, the inner part of the outer steel ring is provided with a connecting pipe, and the top end of the connecting pipe is connected with the leakage groove two.

[0011] Further, the bottom end of the connecting pipe is connected with the discharging pipe, and the top end of the discharging pipe is connected with the leakage groove one.

[0012] Further, the bottom end of the discharging pipe is integrally connected with a converging pipe, and the top end of the adding pipe is provided with a total entering pipe.

[0013] Further, the top end of the total entering pipe is screwed into a filtering pipe, and the inner wall of the filtering pipe is provided with a filter screen.

[0014] In the above technical solution, the utility model provides a bearing assembly of high-speed motor,

[0015] 1. By setting up the shaft rod middle section, the shaft rod end, the outer steel ring, the inner steel ring, the steel ball, the elastic washer, the rolling limiting groove, the inserting column, the inserting hole and the friction increasing ring, when the bearing assembly is disassembled from the high-speed motor, the end cover is disassembled from the high-speed motor, the end cover is removed from the inserting column, and the bearing assembly can be disassembled from the high-speed motor, which is convenient for the maintenance and replacement of the bearing assembly. When the high-speed motor is normally used, the inner steel ring is clamped in the groove inside the shaft rod middle section, and the elastic washer has the abutting force to the outer steel ring, which can guarantee the stability of the shaft rod and the bearing in the high-speed motor. The friction increasing ring can make the outer steel ring and the end cover have large friction, which can inhibit the slight movement of the rotor in the axial direction caused by the electromagnetic force when the high-speed motor operates, so that the shaft rod and the bearing are not easy to move, and the high-speed motor can operate stably. Therefore, the friction increasing ring can guarantee the stability of the bearing assembly after installation, and will not increase the difficulty of disassembling the bearing assembly from the high-speed motor.

[0016] 2. By setting up the adding pipe, the total entering pipe, the discharging pipe, the leakage groove one, the leakage groove two, the connecting pipe and the converging pipe, the lubricating oil can enter between the outer steel ring and the inner steel ring through the total entering pipe through the adding pipe, the lubricating oil can be added to the outer steel ring, the steel ball and the inner steel ring, the wear of the outer steel ring, the steel ball and the inner steel ring during mutual rotation can be reduced, and the service life of the bearing assembly is longer.

[0017] 3. By setting the filter tube and filter screen, the filter screen can filter out the impurities inside the lubricating oil, and can prevent the impurities from adhering to the outer race, steel ball and inner race when the lubricating oil contacts the outer race, steel ball and inner race, and causing wear on the surface of the outer race, steel ball and inner race as they rotate. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0019] Figure 1 A three-dimensional structure schematic diagram is provided for the bearing assembly embodiment of the high-speed motor of the present application.

[0020] Figure 2 An internal structure schematic diagram is provided for the bearing assembly embodiment of the high-speed motor of the present application.

[0021] Figure 3 A bearing assembly installation structure schematic diagram is provided for the bearing assembly embodiment of the high-speed motor of the present application.

[0022] Figure 4 A lubricating oil adding structure schematic diagram is provided for the bearing assembly embodiment of the high-speed motor of the present application.

[0023] Explanation of reference signs:

[0024] 1, shaft rod; 2, shaft rod middle section; 3, shaft rod end; 4, outer race; 5, inner race; 6, steel ball; 7, elastic washer; 8, rolling limiting groove; 9, insertion column; 10, insertion hole; 11, adding pipe; 12, total entering pipe; 13, discharging pipe; 14, leakage groove one; 15, leakage groove two; 16, connecting pipe; 17, converging pipe; 18, filter tube; 19, filter screen; 20, end cover; 21, bearing; 22, friction increasing ring. DETAILED DESCRIPTION

[0025] In order to make those skilled in the art better understand the technical solutions of the present application, the present application will be further described in detail in combination with the drawings.

[0026] As Figures 1-4The utility model discloses a bearing assembly of high -speed motor provides, including axle rod piece 1, bearing piece 21, end cover 20, add pipe 11 and discharge pipe 13, axle rod piece 1 includes axle rod middle section 2 and axle rod end 3, bearing piece 21 includes outer steel ring 4 and inner steel ring 5, and the inner wall on outer steel ring 4 and the outer wall on inner steel ring 5 all are provided with rolling limit slot 8, and the inside rolling of rolling limit slot 8 is connected with steel ball 6, and the outer wall on the one side of outer steel ring 4 is provided with elastic washer 7, and elastic washer 7 contacts with end cover 20, and the recess of inner steel ring 5 sets up in axle rod middle section 2, the outer wall on outer steel ring 4 is provided with inserting post 9, and the outer wall on end cover 20 is provided with inserting hole 10, and inserting post 9 is inserted in the inside of inserting hole 10, and the outer wall on outer steel ring 4 is provided with the increase friction ring 22 that sticks together with the inner wall of end cover 20.

[0027] The utility model provides a bearing assembly of high -speed motor provides, including axle rod piece 1, bearing piece 21, end cover 20, add pipe 11 and discharge pipe 13, axle rod piece 1 includes axle rod middle section 2 and axle rod end 3, bearing piece 21 includes outer steel ring 4 and inner steel ring 5, and the inner wall on outer steel ring 4 and the outer wall on inner steel ring 5 all are provided with rolling limit slot 8, and the inside rolling of rolling limit slot 8 is connected with steel ball 6, and the outer wall on the one side of outer steel ring 4 is provided with elastic washer 7, and elastic washer 7 contacts with end cover 20, and the recess of inner steel ring 5 sets up in axle rod middle section 2, the outer wall on outer steel ring 4 is provided with inserting post 9, and the outer wall on end cover 20 is provided with inserting hole 10, and inserting post 9 is inserted in the inside of inserting hole 10, and the outer wall on outer steel ring 4 is provided with the increase friction ring 22 that sticks together with the inner wall of end cover 20, will end cover 20 be taken off from high -speed motor, and end cover 20 is removed from inserting post 9, can bearing assembly be taken off from high -speed motor, be convenient for to bearing assembly overhaul and replacement, has realized the function of being convenient for to dismantle.

[0028] Through setting: when bearing assembly is taken off from high -speed motor, end cover 20 is taken off from high -speed motor, and end cover 20 is removed from inserting post 9, bearing assembly can be taken off from high -speed motor, and it is convenient to overhaul and replace bearing assembly, when high -speed motor is normal, because inner steel ring 5 is clamped in the recess inside axle rod middle section 2, plus elastic washer 7 has the resistance of outer steel ring 4, can guarantee axle rod piece 1 and bearing piece 21 in the stability of high -speed motor inside, and increase friction ring 22 can make outer steel ring 4 and end cover 20 produce greater friction, can inhibit the slight movement of rotor in the axial when high -speed motor runs electromagnetic force, further make axle rod piece 1 and bearing piece 21 not easy to move, can make high -speed motor run stably, so increase friction ring 22 can guarantee the stability of bearing assembly after installation, and will not increase the difficulty when bearing assembly is taken off from high -speed motor.

[0029] In one embodiment of the utility model provides, Figure 2 And Figure 3As shown, the adding pipe 11 and the discharging pipe 13 are both penetrated through the end cover 20 and the outer steel ring 4, and the bottom end of the adding pipe 11 is located between the outer steel ring 4 and the inner steel ring 5, so that the lubricating oil can enter between the outer steel ring 4 and the inner steel ring 5.

[0030] As shown in another embodiment of the utility model, Figure 2 and Figure 4 As shown, the inner wall of the bottom of the outer steel ring 4 is respectively provided with a leakage groove one 14 and a leakage groove two 15, and the leakage groove one 14 and the leakage groove two 15 are both bowl-shaped structure distribution, and the bowl-shaped leakage groove one 14 and the leakage groove two 15 have better collection effect on the excess lubricating oil.

[0031] As shown in another embodiment of the utility model, Figure 2 and Figure 4 As shown, the inside of the outer steel ring 4 is provided with a connecting pipe 16, and the top end of the connecting pipe 16 is connected with the leakage groove two 15, and a part of the excess lubricating oil enters the inside of the connecting pipe 16 through the leakage groove two 15 and then enters the inside of the discharging pipe 13.

[0032] As shown in one embodiment of the utility model, Figure 2 and Figure 4 As shown, the bottom end of the connecting pipe 16 is connected with the discharging pipe 13, and the top end of the discharging pipe 13 is connected with the leakage groove one 14, and a part of the excess lubricating oil enters the inside of the discharging pipe 13 through the leakage groove one 14.

[0033] As shown in another embodiment of the utility model, Figure 1 and Figure 2 As shown, the bottom end of the discharging pipe 13 is integrally connected with a converging pipe 17, and the top end of the adding pipe 11 is provided with a total entering pipe 12. The excess lubricating oil can be discharged through the discharging pipe 13.

[0034] As shown in another embodiment of the utility model, Figure 2 As shown, the top end of the total entering pipe 12 is screw-plugged with a filter pipe 18, and the inner wall of the filter pipe 18 is provided with a filter screen 19, the filter screen 19 can filter out the impurities in the lubricating oil, and can prevent the impurities from adhering to the outer steel ring 4, the inner steel ring 5 and the steel ball 6, and can prevent the abrasion of the outer steel ring 4, the inner steel ring 5 and the steel ball 6 when rotating.

[0035] Working principle: because the inner steel ring 5 is clamped in the groove of the middle section 2 of the shaft, and the elastic washer 7 has a resisting force on the outer steel ring 4, it can ensure the stability of the shaft 1 and the bearing 21 in the high-speed motor, the increase of the friction ring 22 can make the outer steel ring 4 and the end cover 20 produce larger friction force, which can inhibit the slight movement of the rotor in the axial direction caused by electromagnetic force when the high-speed motor runs, so that the shaft 1 and the bearing 21 are not easy to move, which can make the high-speed motor run stably, so the increase of the friction ring 22 can ensure the stability of the bearing assembly after installation, and will not increase the difficulty of disassembling the bearing assembly from the high-speed motor, when disassembling the bearing assembly from the high-speed motor, the end cover 20 is removed from the high-speed motor, the end cover 20 is removed from the insertion column 9, and the bearing assembly can be disassembled from the high-speed motor, which is convenient for maintenance and replacement of the bearing assembly, realizes the function of easy disassembly, lubricating oil is introduced into the total inlet pipe 12 through the filter pipe 18, the filter screen 19 can filter out the impurities in the lubricating oil, which can prevent the impurities from adhering to the outer steel ring 4, the inner steel ring 5 and the steel ball 6, and can prevent the outer steel ring 4, the inner steel ring 5 and the steel ball 6 from being worn when rotating, the lubricating oil enters between the outer steel ring 4 and the inner steel ring 5 through the adding pipe 11 from the total inlet pipe 12, which can add lubricating oil to the outer steel ring 4, the inner steel ring 5 and the steel ball 6, and can reduce the wear of the outer steel ring 4, the inner steel ring 5 and the steel ball 6 when rotating, the excess lubricating oil flows into the bowl-shaped leakage groove one 14 and the leakage groove two 15, and then enters the inside of the discharge pipe 13 to be discharged, without disassembling the high-speed motor to add lubricating oil, which is more convenient.

[0036] The above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for ordinary skilled in the art, without departing from the spirit and scope of the present application, the described embodiments can be modified in various ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection claimed by the present application.

Claims

1. A bearing assembly of a high speed electric machine comprising a shaft member (1), a bearing member (21), an end cap (20), an addition pipe (11) and a discharge pipe (13), characterized in that, The shaft rod piece (1) includes a shaft rod middle section (2) and a shaft rod end (3), the bearing piece (21) includes an outer steel ring (4) and an inner steel ring (5), the inner wall of the outer steel ring (4) and the outer wall of the inner steel ring (5) are provided with rolling limiting grooves (8), the inside of the rolling limiting grooves (8) is connected with steel balls (6), the outer wall of one side of the outer steel ring (4) is provided with an elastic washer (7), the elastic washer (7) is in contact with an end cover (20), the inner steel ring (5) is arranged at the groove of the shaft rod middle section (2), the outer wall of the outer steel ring (4) is provided with a plug column (9), the outer wall of the end cover (20) is provided with a plug hole (10), the plug column (9) is inserted into the inside of the plug hole (10), the outer wall of the outer steel ring (4) is provided with a friction increasing ring (22) which is attached to the inner wall of the end cover (20).

2. A bearing assembly for a high speed electric machine as claimed in claim 1, wherein, The adding pipe (11) and the discharging pipe (13) penetrate the end cover (20) and the outer steel ring (4), and the bottom end of the adding pipe (11) is located between the outer steel ring (4) and the inner steel ring (5).

3. A bearing assembly for a high speed electric machine as claimed in claim 2, wherein, The inner wall of the bottom of the outer steel ring (4) is provided with a leakage groove one (14) and a leakage groove two (15), and the leakage groove one (14) and the leakage groove two (15) are bowl-shaped structure.

4. A bearing assembly for a high speed electric machine as claimed in claim 3, wherein, The inside of the outer steel ring (4) is provided with a connecting pipe (16), and the top end of the connecting pipe (16) is connected with the leakage groove two (15).

5. A bearing assembly for a high speed electric machine as claimed in claim 4 wherein, The bottom end of the connecting pipe (16) is connected with the discharging pipe (13), and the top end of the discharging pipe (13) is connected with the leakage groove one (14).

6. A bearing assembly for a high speed electric machine as claimed in claim 5 wherein, The bottom end of the discharging pipe (13) is integrally connected with a converging pipe (17), and the top end of the adding pipe (11) is provided with a total entering pipe (12).

7. A bearing assembly for a high speed electric machine as claimed in claim 6 wherein, The top end of the total entering pipe (12) is screwed into a filtering pipe (18), and the inner wall of the filtering pipe (18) is provided with a filter screen (19).

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