CN113738767A

CN113738767A - Rolling bearing pressing plate special for electric automobile

Info

Publication number: CN113738767A
Application number: CN202111290038.3A
Authority: CN
Inventors: 李秋平
Original assignee: Hangzhou Schger Hydraulic Machinery Co ltd
Current assignee: Hangzhou Schger Hydraulic Machinery Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2021-12-03

Abstract

The invention relates to the technical field of bearings, in particular to a rolling bearing pressing plate special for an electric automobile, which comprises a pressing plate, fixing holes and a bearing, wherein the outer surface of the pressing plate is uniformly provided with the fixing holes, the pressing plate is installed on two sides of the bearing, the bearing consists of an outer ring, a retainer, a rolling body and an inner ring, the outer surface of the pressing plate is provided with an annular chute, a sealing ring and a sealing ring are embedded in the annular chute, one side of the outer surface of the pressing plate, which is close to the sealing ring, is provided with an oil leakage groove, one side of the outer surface of the pressing plate, which is far away from the sealing ring, is uniformly provided with backflow holes, and the side surface of the pressing plate is fixedly provided with a pressure dividing frame. The self-pressing type sealing mechanism is arranged, the sealing performance is ensured, meanwhile, the retainer partial pressure assembly is arranged, the service life of the bearing is prolonged, the pressure of the inner ring surface of the sealing ring is applied to the outer ring surface of the tail end of the sealing ring, so that one side of the sealing ring, which is abutted against the outer ring, is deformed outwards and is abutted against the outer ring more tightly, and the sealing performance between the pressing plate and the outer ring is improved.

Description

Rolling bearing pressing plate special for electric automobile

Technical Field

The invention relates to the technical field of bearings, in particular to a rolling bearing pressing plate special for an electric automobile.

Background

A rolling bearing is a precise mechanical element that reduces friction loss by changing sliding friction between a running shaft and a shaft seat into rolling friction. The rolling bearing generally comprises four parts, namely an inner ring, an outer ring, a rolling body and a retainer, wherein the inner ring is used for being matched with a shaft and rotating together with the shaft; the outer ring is matched with the bearing seat to play a supporting role; the rolling bodies are uniformly distributed between the inner ring and the outer ring by virtue of the retainer, and the shape, size and number of the rolling bodies directly influence the service performance and service life of the rolling bearing; the retainer can enable the rolling bodies to be uniformly distributed and guide the rolling bodies to rotate to play a lubricating role.

The bearing pressure plate is a mechanical element arranged on the side edge of the bearing, is matched with the bearing for use, and is mainly used for limiting the bearing.

The existing bearing has the self-lubricating effect, but has some problems for sealing the bearing, one of which is that the self-action of the bearing changes the sliding friction into the rolling friction, but the defects are obvious and the bearing can not work independently, and needs to be matched with a bearing sleeve or a pressure plate, the outer surface of a small round pressure plate is provided with a movable groove, the inside of the movable groove is embedded with a ball, the lower surface of a small round pressure plate is provided with a through hole, the edge position of the upper surface of a large round pressure plate is provided with a chamfer, the edge position of the lower surface of the large round pressure plate is also provided with a chamfer, the edge position of the lower surface of the small round pressure plate is also provided with a chamfer, the ball protrudes out of the movable groove, the ball is positioned in the movable groove and can move freely, the traditional pressure plate structure is changed, the pressure plate is changed into the movable state, the pressure plate is matched with an inner ring to rotate after being installed, and the advantages that the sliding friction between a shaft and the pressure plate is changed into the rolling friction, reduced the friction, but like this with the bearing effect the same, just need another piece to restrict this clamp plate with the same mechanical element of clamp plate effect, the structure is complicated, the leakproofness can't be grasped, under long-term high motion, can the oil leak between small circle clamp plate and the big circle clamp plate, even increased the oil reserve, still can't satisfy long-term work, influence the life of bearing.

Secondly, through having seted up the blind hole at big circular pressing plate's upper surface, make things convenient for people to utilize it to be connected with outside article, because the axle can't pass bearing and clamp plate, can only be connected through the blind hole, the structure is extremely unstable.

And thirdly, partial pressure is not carried out on the bearing retainer, when the bearing rotates at a high speed, the pressure on the retainer is very high, the retainer is easy to break and deform, and the rolling body is assembled on the retainer, so that the rolling body cannot be completely wrapped, the overall strength of the influence is reduced, and the service life of the bearing is prolonged.

Disclosure of Invention

The invention aims to provide a rolling bearing pressing plate special for an electric automobile, which effectively realizes the sealing property between the bearing pressing plate and a bearing, avoids the lack of lubricating oil, ensures the balanced bearing pressure when the rolling bodies of the bearing are dispersedly pressed, and effectively prolongs the service life.

In order to achieve the purpose, the invention provides the following technical scheme: a rolling bearing pressing plate special for an electric automobile comprises a pressing plate, fixing holes and a bearing, wherein the outer surface of the pressing plate is uniformly provided with the fixing holes, the pressing plate is installed on two sides of the bearing, the bearing comprises an outer ring, a retainer, a rolling body and an inner ring, the rolling body is uniformly embedded on the retainer in an annular shape, the retainer is sleeved on the inner ring, the outer surface of the inner ring is provided with an annular groove used for limiting the rolling body, the outer ring is sleeved on the outer side of the retainer, the other end of the rolling body is abutted against the rolling body, the outer surface of the pressing plate is provided with an annular chute, the side wall of the annular chute is perpendicular to the pressing plate, the bottom of the annular chute is inclined and is inclined towards the outer ring by the inner ring of the annular chute, the height of the inner ring wall of the annular chute is lower than that of the outer ring, a sealing ring and a sealing ring are embedded in the annular chute, and the sealing ring is integrally formed by injection molding of the outer ring and the inner ring, the inner wall of the inner convex ring is wedge-shaped, an oil leakage groove is formed in one side, close to the sealing ring, of the outer surface of the pressing plate, backflow holes are evenly formed in one side, away from the sealing ring, of the outer surface of the pressing plate, a pressure dividing frame is fixed to the side face of the pressing plate, the pressure dividing frame is composed of a connecting ring, an auxiliary pressure dividing base body and a supporting sheet, one end of the auxiliary pressure dividing base body is abutted to the connecting ring, the other end of the auxiliary pressure dividing base body is integrally connected with the supporting sheet, and the supporting sheet is abutted to the rolling body.

The invention sets the annular chute on the side surface of the pressure plate, and the seal ring are embedded in the annular chute, after the pressure plate is assembled, the seal ring can tightly abut against the outer ring, the pressure of the inner ring surface of the seal ring is applied to the outer ring surface at the tail end of the seal ring, so that one side of the seal ring abutting against the outer ring is outwards deformed and is more tightly abutted against the outer ring, thereby improving the sealing property between the pressure plate and the outer ring, keeping the lubricating oil in the bearing and the pressure plate when rotating at high speed, avoiding the lubricating oil loss, causing the bearing to be scrapped, improving the service life of the bearing, meanwhile, the design effectively isolates the rolling noise in the working process of the bearing from being outwards transmitted, thus effectively isolating the rolling noise by the pressure plate, reducing the transmission range thereof, realizing the reduction of the integral abnormal sound of the electric automobile using the bearing and the bearing seat, and the heat generated by the rolling of the bearing parts in the working process of the bearing, the heat conduction of parts on the bearing can be absorbed by the sealing ring and the sealing ring, but the heat conduction to the pressing plate can be reduced, so that the heat insulation is realized, the deformation caused by heating of the pressing plate is avoided, and the stability of each rolling body on the bearing is kept in a pressing plate ballast state.

The design of the pressure-dividing frame effectively realizes the support of the rolling body, and one of the purposes is to realize the dispersion of the bearing pressure of the retainer through the support; the second one lies in that the contact of the supporting sheet on the pressure dividing frame and the surface of the rolling body realizes that the lubricating oil flows through the gap between the supporting sheet and the rolling body, thus playing the effect of smearing the lubricating oil on the surface of the rolling body and controlling the uniform quantity of smearing, avoiding the rolling efficiency reduction caused by the uneven distribution of the lubricating oil on the surface of the rolling body, and the third one lies in that the stability of each rolling body on the bearing can be kept, and the abrasion and the falling of the rolling body and the overlarge position moving amplitude are avoided.

According to one embodiment of the invention, the inner ring is inserted into the annular chute, the outer ring sheet is attached to the pressure plate, and the other surface of the outer ring sheet is abutted against the outer surface of the outer ring. The design of the inner convex ring of the sealing ring realizes that the inner convex ring is tightly connected with the annular chute and keeps the tightness between the pressing plate and the outer ring, the effect of buffering and separation between the inner convex ring and the annular chute is realized, the heat transfer is avoided, and the impact energy transition transfer causes the deformation or flatness influence of adjacent parts, and the sealing ring can be relatively filled in the gap formed by the deformation of the pressing plate or any part of the outer ring to keep the tight fit connection between the pressing plate and the outer ring.

According to an embodiment of the invention, one end of the sealing ring embedded in the annular chute is in an L shape, the periphery of one side of the sealing ring, which is abutted against the inner convex ring, is in a wedge shape, and the other end of the sealing ring extends outwards and is abutted against the inner wall of the outer ring. Adopt above-mentioned design can realize the effective connection of clamp plate and outer lane inner wall, can realize like this that the axiality of both promotes to realize having certain buffering support and connection leakproofness between the two.

According to an embodiment of the invention, the bottom of the annular chute is low in slope from inside to outside, the sealing ring and the sealing ring are both made of rubber, the hardness of the rubber used for the sealing ring is higher than that of the rubber used for the sealing ring, and the rubber material is selected for realizing buffering, temperature insulation and noise reduction.

According to one embodiment of the invention, the oil leakage groove is annular and is inclined inwards from the outer side of the pressure plate, the inner wall of the oil leakage groove is smooth, the backflow hole is inclined outwards from the inner side of the pressure plate, and the backflow hole is communicated with the inner cavity of the oil leakage groove, so that the lubricating oil can be relatively intercepted in the range near the bearing, the lubricating oil flows back once and is contacted with the rolling body, and the lubricating oil is prevented from being lost.

According to one embodiment of the invention, the bumps are uniformly fixed on the surface of the auxiliary partial pressure base body, the protruding points of the bumps are in a U shape, and the gaps between the adjacent bumps are extremely small, so that when lubricating oil flows through the surface of the auxiliary partial pressure base body with the bumps uniformly distributed, the space between the adjacent bumps is not easily filled with the lubricating oil or the lubricating oil flows to the surface of the auxiliary partial pressure base body at an excessively high flow rate to directly plug air between the bumps, thereby facilitating the formation of an air film between the bumps on the surface of the auxiliary partial pressure base body, facilitating the formation of a physical oil-sparse layer on the surface of the partial pressure frame, and enabling the lubricating oil on the surface of the partial pressure frame to slide through the physical oil-sparse layer support, so that the lubricating oil is ensured to flow along the partial pressure frame and not be adhered to the partial pressure frame, thereby avoiding the adhesion of the lubricating oil.

According to one embodiment of the invention, one end of the auxiliary pressure division base body is embedded in the pressure plate, the connecting ring is pressed on the auxiliary pressure division base body and is fixedly connected with the pressure plate through a bolt, and the gasket is clamped between the connecting ring and the auxiliary pressure division base body, so that the pressure division and maintenance effects are further improved.

According to an embodiment of the present invention, the support sheet is arc-shaped, and the support sheet is matched with the surface shape of the rolling element.

(1) Through having seted up annular chute in the clamp plate side, and the gomphosis has sealing ring and sealing washer in annular chute, the clamp plate assembly is accomplished the back, the sealing ring can tightly support the outer lane, the pressure of sealing ring inner circle face is exerted on the tail end outer lane face of sealing washer, one side that makes sealing washer and outer lane offset is outwards warp, it is tighter to support with the outer lane, thereby promote the leakproofness between clamp plate and the outer lane, keep lubricating oil rotating at a high speed and stay in bearing and clamp plate down, avoid the lubricating oil disappearance, lead to the bearing to scrap, bearing service life is prolonged.

(2) Make partial pressure frame surface form the oil reservoir of one deck physics, the lubricating oil on partial pressure frame surface will drench the oil reservoir support landing through this layer of physics, guarantee lubricating oil promptly and can not the adhesion on partial pressure frame's flow again along partial pressure frame, thereby avoid the lubricating oil adhesion, make the lubricating oil that gets rid of on the lubricating oil partial pressure frame landing to inner circle and rolling element junction again, cooperation sealing ring and sealing washer, further promote the effect of leak protection oil, and partial pressure frame can support the rolling element, the pressure that the dispersion holder bore, further promote the life of bearing.

Drawings

FIG. 1 is a schematic cross-sectional elevation view of the structure of the present invention;

FIG. 2 is a schematic view of the platen of FIG. 1 according to the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

FIG. 4 is a schematic side view of the structure of the pressure rack of FIG. 1 according to the present invention;

FIG. 5 is a schematic view of the seal ring of FIG. 1 according to the present invention;

fig. 6 is a partial cross-sectional view of the frame and the bump of fig. 3 according to the present invention.

In the figure: 1. pressing a plate; 2. a fixing hole; 3. an annular chute; 4. a seal ring; 5. a seal ring; 6. a bearing; 61. an outer ring; 62. a holder; 63. a rolling body; 64. an inner ring; 7. an oil leakage groove; 8. a return orifice; 9. a voltage division frame; 10. and (4) a bump.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, an embodiment of the present invention is shown:

the bearing comprises a pressure plate 1, fixing holes 2 and a bearing 6, wherein the outer surface of the pressure plate 1 is uniformly provided with the fixing holes 2, the pressure plate 1 is arranged on two sides of the bearing 6, only one side is shown in figure 1, the bearing 6 consists of an outer ring 61, a retainer 62, a rolling body 63 and an inner ring 64, the rolling body 63 is uniformly embedded on the retainer 62 in an annular shape, the retainer 62 is sleeved on the inner ring 64, the outer surface of the inner ring 64 is provided with an annular groove for limiting the rolling body 63, the outer ring 61 is sleeved on the outer side of the retainer 62, the other end of the rolling body 63 is abutted against the rolling body 63, the retainer 62 plays a role of limiting the rolling body 63 and keeping the rolling body 63 between the outer ring 61 and the inner ring 64, a shaft is connected with the inner ring 64, so that when the shaft rotates, the inner ring 64 can rotate in the outer ring 61 through the rolling body 63, the sliding friction is changed into the rolling friction, the motion friction is reduced, and the pressure plate 1 can limit two sides of the bearing 6, avoiding the bearing 6 from shifting at high speeds, which is prior art and not described herein.

Annular chute 3 has been seted up to clamp plate 1's surface, annular chute 3's lateral wall perpendicular to clamp plate 1, the bottom slope that only has annular chute 3 is seted up, the processing degree of difficulty has been reduced, annular chute 3's bottom is by the outside ring slope of inner ring, annular chute 3's inner ring wall height is less than outer rampart height, annular chute 3's inside is embedded to have sealing ring 4 and sealing washer 5, because annular chute 3's bottom leans out, seal washer 5 installed in annular chute 3 like this receives the extrusion, can lean out.

Sealing ring 4 is moulded plastics by outer anchor plate and interior annular an organic whole and is made, and the inner wall of interior annular is the wedge, and the surface of clamp plate 1 has been offered close to one side of sealing washer 5 and has been used for the oil leak by oil leak groove 7, and the surface of clamp plate 1 keeps away from one side of sealing washer 5 and has evenly offered backward flow hole 8, makes the oil leak flow to flow back through backward flow hole 8, and the side of clamp plate 1 is fixed with partial pressure frame 9, supports rolling element 63.

Above-mentioned design has effectively isolated the outside transmission of the rolling noise in the bearing course of operation, like this to the rolling noise by the effective separation of clamp plate 1, reduce its propagation range, realize using the whole abnormal sound of electric automobile of this bearing and bearing frame to reduce, the design of sealing ring 4 and sealing washer 5 is to bearing spare part rolling heat production in bearing 6 course of operation, accessible sealing ring 4 and sealing washer 5 absorb the spare part heat conduction on the bearing 6, but can reduce on heat conduction to clamp plate 1, realize thermal-insulated avoiding clamp plate 1 thermal deformation again like this, keep each rolling element stability on the bearing 6 under the state of the realization clamp plate 1 ballast.

The pressure dividing frame 9 is composed of a connecting ring, an auxiliary pressure dividing base body and a supporting sheet, one end of the auxiliary pressure dividing base body is abutted against the connecting ring, the other end of the auxiliary pressure dividing base body is integrally connected with the supporting sheet, the supporting sheet is abutted against the rolling bodies 63, the auxiliary pressure dividing base body is shaped like a feather ball, a plurality of outward branches are arranged on the surface, as shown in fig. 2 and 4, the number of the branches is matched with the number of the rolling bodies 63 in the bearing, the supporting sheet is arranged on the branches and abutted against the rolling bodies 63, the rolling bodies 63 can be supported, the bearing pressure of the retainer 62 is dispersed, and the service life of the bearing 6 is prolonged.

Furthermore, the design of the partial pressure frame 9 effectively realizes the support 63 for the rolling body 63, and one of the purposes is to realize the pressure bearing of the dispersed holding frame 62 through the support; secondly, the lubricating oil flows through the gap between the supporting sheet and the rolling body 63 by the contact between the supporting sheet on the pressure-dividing frame 9 and the surface of the rolling body 63, so that the effects of coating the lubricating oil on the surface of the rolling body 63 and controlling the uniform coating amount are achieved, the rolling efficiency reduction caused by the uneven distribution of the lubricating oil on the surface of the rolling body 63 is avoided, and thirdly, the stability of each rolling body 63 on the bearing 6 can be maintained, the abrasion and the falling of the rolling body are avoided, and the position moving amplitude is too large.

Further, as shown in fig. 2-3, the inner collar is inserted into the annular chute 3, the outer ring plate is attached to the pressing plate 1, the other surface of the outer ring plate abuts against the outer surface of the outer ring 61, the inner collar of the sealing ring 4 is designed to be tightly connected with the annular chute 3 and maintain the sealing performance between the pressing plate 1 and the outer ring 61, the effects of buffering and blocking between the inner collar and the outer ring are achieved, heat transfer is avoided, impact energy transition transfer causes deformation or flatness influence of adjacent components, and for flatness micro-deformation of any component of the pressing plate 1 or the outer ring 61, the sealing ring 4 can be relatively filled with gaps generated by the micro-deformation to maintain tight fit connection between the inner collar and the outer ring.

Further, as shown in fig. 2-3, the end of the sealing ring 5 embedded inside the annular chute 3 is "L" shaped, the periphery of one side of the sealing ring 5 abutting against the inner collar is wedge-shaped, the other end of the sealing ring 5 extends outwards and abuts against the inner wall of the outer ring 61, when the sealing ring 4 is squeezed, the outer ring and the inner collar deform to extend the inner collar towards the annular chute 3, so that the end of the inner collar abutting against the "L" shaped end of the sealing ring 5 tilts towards the inner wall of the annular chute 3, so that the other end expands outwards, so that the end of the sealing ring 5 abutting against the outer ring 61 abuts more tightly, further, the effective connection between the inner wall of the pressing plate 1 and the inner wall of the outer ring 61 can be realized by adopting the above design scheme, thus the coaxiality of the two can be improved, and a certain buffer support and connection sealing performance can be realized between the two.

Further, as shown in fig. 2, the bottom slope of the annular chute 3 is low from inside to outside, which is beneficial to the inward movement of the sealing ring 4, the sealing ring 4 and the sealing ring 5 are made of rubber, and the rubber hardness of the sealing ring 5 is higher than that of the sealing ring 4, so that one side of the sealing ring 5 is extruded, the other side can be reversely deformed, and the rubber material is selected to realize buffering, heat insulation and noise reduction.

Further, as shown in fig. 3, the oil leakage groove 7 is annular and is inclined inward from the outer side of the pressing plate 1, the inner wall of the oil leakage groove 7 is smooth, the backflow hole 8 is inclined outward from the inner side of the pressing plate 1, the backflow hole 8 is communicated with the inner cavity of the oil leakage groove 7, the lubricating oil which runs up through the pressure dividing frame 9 can flow into the backflow hole 8 from the oil leakage groove 7 and then is discharged below the pressure dividing frame 9, and meanwhile, the lubricating oil can be relatively intercepted in the range near the bearing, flows back and contacts with the rolling body 63, and the lubricating oil loss is avoided.

Further, as shown in fig. 3 and 6, the surface of the auxiliary partial pressure substrate is uniformly fixed with the bumps 10, and the protruding points of the bumps 10 are U-shaped, because the bumps 10 are densely distributed, the gap between the adjacent bumps 10 is very small, so when the lubricating oil flows through the surface of the auxiliary partial pressure substrate uniformly distributed with the bumps 10, the space between the adjacent bumps 10 may not be easily filled with the lubricating oil or the surface flow rate of the lubricating oil flowing to the auxiliary partial pressure substrate is too fast to directly block the air between the bumps 10, thus, a layer of air film is formed among the bumps 10 on the surface of the auxiliary partial pressure substrate, a layer of physical oil drainage layer is formed on the surface of the partial pressure frame 9, lubricating oil on the surface of the partial pressure frame 9 slides down through the physical oil drainage layer support, the flow of the lubricating oil along the partial pressure frame is ensured and the lubricating oil is not adhered to the partial pressure frame 9, so that the lubricating oil is prevented from adhering.

Further, as shown in fig. 2 and 4, one end of the auxiliary partial pressure base body is embedded in the pressure plate 1, the connecting ring is pressed on the auxiliary partial pressure base body and is fixedly connected with the pressure plate 1 through a bolt, a gasket is clamped between the connecting ring and the auxiliary partial pressure base body, the gasket is made of rubber, and the sealing performance between the connecting ring and the pressure plate 1 is improved.

Further, as shown in fig. 3-4, the support sheet is arc-shaped, and the surface shape of the support sheet is matched with the surface shape of the rolling element 63, so that the support sheet can embrace the rolling element 63, and the pressure-dividing and holding effects are further improved.

The working principle is as follows: when the pressure plate is used, the pressure plate 1 is arranged on the side edge of the bearing 6, the bearing 6 is normally arranged in the sleeve or the bearing seat, and the pressure plate 1 is fixed on the sleeve or the bearing seat through the bolt, so that the pressure plate 1 is limited in the sleeve and the bearing seat, which is the prior art and is not described herein.

Through having seted up annular chute 3 in clamp plate 1 side, and the gomphosis has sealing ring 4 and sealing washer 5 in annular chute 3, 1 assembly of clamp plate is accomplished the back, sealing ring 4 can tightly support outer lane 61, the pressure of the interior lane face of sealing ring 4 is exerted on the tail end outer lane face of sealing washer 5, one side that makes sealing washer 5 and outer lane 61 offset is outwards warp, it is tighter to support with outer lane 61, promote the leakproofness between clamp plate 1 and the outer lane 61, keep in bearing 6 and clamp plate 1 under the high-speed rotation of lubricating oil, avoid the lubricating oil disappearance.

The pressure-dividing frame 9 is arranged on the inner ring of the side face of the pressure plate 1, the bumps 10 are densely processed on the auxiliary pressure-dividing base surface of the pressure-dividing frame 9, air can be retained at the low-lying positions of the dense bumps 10, a layer of air film is formed on the surfaces of the bumps 10, the surface of the pressure-dividing frame 9 is smooth, lubricating oil cannot be adhered, the lubricating oil thrown onto the lubricating oil pressure-dividing frame 9 slides to the joints of the inner ring 64 and the rolling bodies 63, the pressure-dividing frame 9 supports the rolling bodies 63, and pressure borne by the holder can be dispersed.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A rolling bearing pressure plate for an electric vehicle includes:

the outer surface of the pressing plate (1) is uniformly provided with fixing holes (2),

the pressure plate (1) is arranged on two sides of the bearing (6), the bearing (6) is composed of an outer ring (61), a retainer (62), a rolling body (63) and an inner ring (64),

the method is characterized in that: the outer surface of the pressing plate (1) is provided with an annular chute (3), the side wall of the annular chute (3) is perpendicular to the pressing plate (1), the bottom of the annular chute (3) is inclined and is inclined towards the outer ring by the inner ring of the annular chute (3), the height of the inner ring wall of the annular chute (3) is lower than that of the outer ring wall, a sealing ring (4) and a sealing ring (5) are embedded in the annular chute (3), the sealing ring (4) is integrally formed by injection molding of an outer ring sheet and an inner ring, the inner wall of the inner ring is wedge-shaped, one side, close to the sealing ring (5), of the outer surface of the pressing plate (1) is provided with an oil leakage groove (7), one side, far away from the sealing ring (5), of the outer surface of the pressing plate (1) is uniformly provided with a backflow hole (8), the side surface of the pressing plate (1) is fixedly provided with a pressure dividing frame (9), and the pressure dividing frame (9) consists of a connecting ring, an auxiliary pressure dividing base body and a supporting sheet, one end of the auxiliary pressure division base body is abutted against the connecting ring, the other end of the auxiliary pressure division base body is integrally connected with a supporting sheet, and the supporting sheet is abutted against the rolling body (63).

2. The rolling bearing pressing plate special for the electric automobile according to claim 1, characterized in that: the inner convex ring is inserted in the annular chute (3), the outer ring sheet is attached to the pressing plate (1), and the other surface of the outer ring sheet is abutted to the outer surface of the outer ring (61).

3. The rolling bearing pressing plate special for the electric automobile according to claim 2, characterized in that: the sealing ring (5) is embedded in the annular chute (3) and is L-shaped at one end, the periphery of one side, abutted against the inner convex ring, of the sealing ring (5) is wedge-shaped, and the other end of the sealing ring (5) extends outwards and abuts against the inner wall of the outer ring (61).

4. The rolling bearing pressing plate special for the electric automobile according to claim 3, characterized in that: the bottom slope of annular chute (3) is low-lying from inside to outside, sealing ring (4) and sealing washer (5) are all made for the rubber material, and the used rubber hardness of sealing washer (5) is higher than the used rubber hardness of sealing ring (4).

5. The rolling bearing pressing plate special for the electric automobile according to claim 1, characterized in that: oil leakage groove (7) are the annular and by the outside leanin of clamp plate (1), the inner wall of oil leakage groove (7) is smooth, backward flow hole (8) to the outside slope of the inboard side by clamp plate (1), just backward flow hole (8) and the inner chamber UNICOM of oil leakage groove (7).

6. The rolling bearing pressing plate special for the electric automobile according to claim 5, characterized in that: the surface of the auxiliary partial pressure substrate is uniformly fixed with bumps (10), and the protruding points of the bumps (10) are U-shaped.

7. The rolling bearing pressing plate special for the electric automobile according to claim 1, characterized in that: one end of the auxiliary partial pressure base body is embedded in the pressing plate (1), the connecting ring is pressed on the auxiliary partial pressure base body and is fixedly connected with the pressing plate (1) through a bolt, and a gasket is clamped between the connecting ring and the auxiliary partial pressure base body.

8. The rolling bearing pressing plate special for the electric automobile according to claim 1, characterized in that: the supporting sheet is arc-shaped, and the surface shape of the supporting sheet is matched with that of the rolling body (63).