CN205248955U - Lubricated oil baffle disc of using of antifriction bearing - Google Patents

Abstract

An oil retaining plate for rolling bearing lubrication relates to a rolling bearing device. In the traditional rolling bearing device of the oil thrower, the gap between the outer diameter of the oil thrower and the inner diameter of the bearing outer cover is too large, the grease is easy to consume, the time interval for refueling is shortened, the waste of grease is caused, and the lubrication is insufficient. The oil retaining plate of the utility model is a disk-shaped oil retaining plate with a shaft hole in the middle, and one end of the oil retaining plate is a bearing matching end face matched with the rolling bearing, and the bearing mating end face of the oil retaining plate is provided with a circular ring matching the inner ring of the rolling bearing. The positioning part of the positioning part and the oil retaining part concentrically placed outside the positioning part, the positioning part protrudes outward from the oil retaining part; the oil retaining part is perpendicular to the shaft hole; the positioning part of the oil retaining plate is provided with an annular groove; the outer circumferential side of the oil retaining plate The cylindrical surface is provided with at least one annular oil storage tank. By changing the shape of the oil retaining plate and the gap between the oil retaining plate and adjacent parts, the technical solution realizes the oil retaining, oil retaining and oil storage functions of the oil retaining plate, and ensures the amount of grease required for the normal operation of the bearing working area.

Description

An oil baffle plate for rolling bearing lubrication

technical field

The utility model relates to a rolling bearing device, in particular to a high-voltage motor rolling bearing device.

Background technique

The rotor of the high-voltage motor needs to be statically supported on the base of the motor through a rolling bearing device. In terms of dynamics, it rotates at a certain speed and transmits torque, so that the motor realizes the conversion of electrical energy to mechanical energy.

With the traditional rolling bearing device of the oil throwing pan, the gap between the outer diameter of the oil throwing pan and the inner diameter of the bearing cover is too large, often exceeding 5mm, and a smooth oil throwing and running path is formed between the oil throwing pan and the inner diameter of the bearing outer cover. The grease added to the bearing chamber is easily thrown away from the working area of the rolling bearing under the centrifugal force of the oil throwing pan, and the grease slides to the waste oil area of the oil pump, and the bearing is maintained by the residual grease in the working area, and the grease is easy to consume, which shortens the refueling time interval , resulting in waste of grease, insufficient lubrication, and the lack of oil in the bearing runs in a semi-dry friction and semi-lubricated state, which produces abnormal bearing noise and shortens the bearing life. The expansion coefficients of the various parts of the bearing are inconsistent, and the rolling bearing is in a semi-lubricated and semi-dry friction state due to lack of oil, resulting in serious vibration of the bearing, resulting in excessive tightness of the outer ring of the bearing, stuck rolling elements, expansion, looseness, and separation of the inner ring of the bearing. will prevent the motor from operating normally.

Utility model content

The technical problem to be solved and the technical task proposed by the utility model are to perfect and improve the existing technical solutions, and to provide an oil retaining plate for rolling bearing lubrication, so as to change the shape of the oil retaining plate and reduce the contact between the oil retaining plate and the relative The gap between the adjacent parts realizes the oil retaining, oil retaining and oil storage functions of the oil retaining plate, and the purpose of ensuring the normal operation of the bearing device. For this reason, the utility model takes the following technical solutions.

An oil retaining plate for rolling bearing lubrication, characterized in that: the oil retaining plate is a disc-shaped oil retaining plate with a shaft hole in the middle, one end of the oil retaining plate is a bearing mating end face matched with a rolling bearing, and the bearing mating end face of the oil retaining plate is There is an annular positioning part matching the inner ring of the rolling bearing and an oil retaining part concentrically placed outside the positioning part. The positioning part protrudes outward from the oil retaining part; the oil retaining part is perpendicular to the shaft hole; the positioning part of the oil retaining plate An annular groove is provided; at least one annular oil storage tank is provided on the cylindrical surface of the outer circumference of the oil baffle plate. The positioning part protrudes from the oil retaining part, so that there is a gap between the oil retaining part and the rolling bearing after assembly. The annular groove located in the oil retaining part can be used to store grease for rolling lubrication, increasing the amount of grease storage in the bearing operating area and ensuring long-term operation of the bearing. The need for lubrication prolongs the time interval between rolling bearing grease. There is an annular oil storage tank on the outer circle of the oil pan, where the oil is in a semi-liquid and semi-solid state, forming a reliable oil seal to prevent easy loss of oil; but when the oil in the working area becomes diluted waste oil after long-term operation, it will not Prevent waste oil from draining through the gap here. The oil retaining part is perpendicular to the shaft hole. After assembly, the oil retaining part is set vertically to realize the functions of oil retaining and oil retention, and avoid the disadvantage of conical oil throwing. By changing the shape of the oil retaining plate and the gap between the oil retaining plate and adjacent parts, the technical solution realizes the oil retaining, oil retaining and oil storage functions of the oil retaining plate, and ensures the amount of grease required for the normal operation of the bearing working area.

As a further improvement and supplement to the above technical solution, the utility model also includes the following additional technical features.

The positioning part of the oil deflecting plate protrudes outward from the oil deflecting part by 1 mm to 3 mm. After assembly, the positioning part is close to the inner ring of the rolling bearing, and the gap between the oil retaining part and the outer ring of the rolling bearing can be between 1mm and 3mm. If the gap between the positioning part and the oil retaining part is too large, the oil retaining part and the rolling bearing If the gap between the outer ring and the outer ring is too large, the grease will easily slip from the rolling elements, and the oil retaining function of the oil retaining plate will be weakened; The ring collides and rubs against the oil deflector, and the bearing cannot work normally.

The outer cylindrical surface of the oil deflector is opposite to the inner cylindrical surface of the bearing outer cover, and the gap between the outer cylindrical surface of the oil deflector and the inner cylindrical surface of the bearing outer cover is 0.6 mm to 1.5 mm. The most suitable gap value is between 0.6mm and 1.5mm. If the gap is too large, the centrifugal force of the oil retaining plate will cause the grease to flow out of the bearing running area from the gap and flow to the waste oil area in the oil pump; if the gap is too small, Although the purpose of sealing oil is achieved, it will cause assembly difficulties and even lead to interference.

The number of annular oil storage tanks on the outer cylindrical surface of the oil baffle plate is 1 or 2. When the quantity of the annular oil storage tank is too much, the waste oil is not easy to flow out, which affects the work.

The annular oil storage tank is in a "U" shape. Facilitate processing, avoid stress concentration, improve strength, and also help waste oil flow out.

The middle part of the other end of the oil retaining plate is provided with an annular protrusion, and two screw holes for disassembly are provided at the annular protrusion. The screws are screwed into the screw holes to facilitate the disassembly of the oil deflector.

Beneficial effects: the rolling bearing device realizes the oil retaining, oil retention and oil storage functions of grease, reduces the amount of grease used, effectively prolongs the time interval for grease filling of the bearing device, reduces the cost of manual maintenance, and eliminates the waste of grease; improves The lubrication condition of the bearing is improved, the working life of the bearing is greatly improved, the purchase cost of the bearing is reduced, and the loss of production reduction caused by the downtime required for bearing inspection, replacement and maintenance is also effectively reduced, which indirectly creates higher value for customers.

Description of drawings

Figure 1A is the utility model oil baffle plate.

FIG. 1B is an enlarged view of the portion of FIG. 1A .

Fig. 2 is a structural schematic diagram of the rolling shaft device of the present invention.

In the figure: 1-bearing inner cover; 2-rolling bearing; 3-bearing sleeve; 4-end cover; 5-filling pipe; 6-bearing outer cover; Oil tank; 703-positioning part; 704-oil retaining part; 8-oil retainer.

detailed description

The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings of the description.

As shown in Figures 1A and 1B, the oil retaining plate 7 is a disc-shaped oil retaining plate 7 with a shaft hole in the middle, and one end of the oil retaining plate 7 is a bearing matching end face matched with the rolling bearing 2, and the bearing mating end face of the oil retaining plate 7 is There is an annular positioning part 703 matching the inner ring of the rolling bearing 2 and an oil retaining part 704 concentrically placed outside the positioning part 703. The positioning part 703 protrudes outward from the oil retaining part 704; the oil retaining part 704 is perpendicular to the shaft hole; the oil retaining part The positioning portion 703 of the disc 7 is provided with an annular groove 701 ; the outer cylindrical surface of the oil deflecting disc 7 is provided with two annular oil storage tanks 702 . The positioning part 703 protrudes outward from the oil retaining part 704, so that there is a gap between the oil retaining part 704 and the rolling bearing 2 after assembly, and the annular groove 701 located in the oil retaining part 704 can be used to store grease for rolling lubrication, increasing the grease storage in the running area of the bearing amount, to ensure the need for long-term lubrication of the bearing, and prolong the time interval of the rolling bearing 2 grease. There are 1~2 annular oil storage tanks 702 on the outer circle of the oil pan. The oil in the annular oil storage tanks 702 is usually in a semi-liquid and semi-solid state, forming a reliable oil seal to prevent easy loss of oil; but when the oil in the working area runs for a long time, it becomes When the diluted waste oil is used, it will not prevent the waste oil from being discharged from the gap here. The oil retaining part 704 is perpendicular to the shaft hole. After assembly, the oil retaining part 704 is vertically arranged to realize the functions of oil retaining and oil retention, and avoid the disadvantage of conical surface throwing oil.

The positioning portion 703 of the oil deflecting plate 7 protrudes outward from the oil deflecting portion 704 by 2mm. After assembly, the positioning part 703 is close to the inner ring of the rolling bearing 2, and the clearance between the oil retaining part 704 and the outer ring of the rolling bearing 2 is about 2 mm. If the gap between the positioning part 703 and the oil retaining part 704 is too large, the oil retaining part If the gap between 704 and the outer ring of the rolling bearing 2 is too large, the grease will easily slip from between the rolling elements, and the oil retaining function of the oil retaining plate 7 will be weakened; The distance of swimming causes the outer ring of the bearing to collide and rub against the oil retaining plate 7, and the bearing cannot work normally.

The outer circumferential side of the oil deflector 7 is opposite to the inner cylindrical surface of the bearing outer cover. In order to avoid interference and have a good oil sealing effect, the gap value between the outer cylindrical surface of the oil deflector 7 and the inner cylindrical surface of the bearing outer cover 1mm. If the gap is too large, the centrifugal force of the oil retaining plate 7 will cause grease to flow out of the bearing running area from the gap and flow to the waste oil area in the oil pump; if the gap is too small, although the purpose of sealing oil is achieved, it will cause assembly difficulties, even lead to interference.

In order to facilitate processing and avoid stress concentration, the annular oil storage tank 702 is in a "U" shape. The grease in the "U"-shaped annular oil storage tank 702 is in a semi-liquid and semi-solid state to form an oil seal, preventing premature loss of grease and not hindering the discharge of waste oil.

In order to facilitate the disassembly of the oil retainer 7 and ensure the strength of the oil retainer 7, an annular protrusion is provided in the middle of the other end of the oil retainer 7, and two screw holes are arranged at the annular protrusion. Screw in the screw in the screw hole, which is easy to realize the dismounting of the oil baffle plate 7 .

The assembly structure of the oil retaining plate is shown in Figure 2. The bearing assembly structure includes rolling bearing 2, bearing inner cover 1, bearing sleeve 3, end cover 4, bearing outer cover 6, oil retaining plate 7, oil filling pipe 5, oil extractor 8 . The quantity, width and depth of the annular oil storage tank 702 are determined according to the motor speed and the speed of the outer circle of the oil retainer 7. The greater the speed, the higher the oil retention, oil storage capacity, and the higher the speed. Quantity increases accordingly, and the depth and width of the annular oil storage tank 702 also increase. There is a gap between the outer end surface of the oil deflector 7 with the annular groove 701 and the end surface of the adjacent rolling bearing 2, and there is a gap between the outer circumferential side of the oil deflector 7 and the inner surface of the adjacent bearing outer cover 6. gap.

In order to make the grease form an oil seal easily, the annular groove 701 and the annular oil storage tank 702 store grease in a semi-liquid and semi-solid state.

After assembly, the gap between the outer end surface of the oil deflector 7 with the annular groove 701 and the end surface of the adjacent rolling bearing 2 is 2mm; the outer cylindrical surface of the oil deflector 7 and the inner surface of the adjacent bearing outer cover 6 The gap value between the cylindrical faces is 1 mm.

The oil baffle plate for rolling bearing lubrication shown in Figure 1-2 above is a specific embodiment of the utility model, which has already reflected the substantive features and progress of the utility model, and can be based on the actual use needs in the enlightenment of the utility model Under the circumstances, the equivalent modification of its shape, structure and other aspects are all within the scope of protection of this scheme.

Claims (6)

1. a rolling bearing lubrication oil baffle disc, is characterized in that: oil baffle disc (7) is for opening the discoid oil baffle disc of axis hole in middle part(7), one end of oil baffle disc (7) is the bearing fit end face matching with rolling bearing (2), the bearing fit end face of oil baffle disc (7)Be provided with the annular location division (703) and the concentric oil retaining part that is placed on location division (703) that match with rolling bearing (2) inner ring(704), location division (703) evagination is in oil retaining part (704); Described oil retaining part (704) is perpendicular to axis hole; Determining of oil baffle disc (7)Position portion (703) offers annular groove (701); The external cylindrical surface of described oil baffle disc (7) is provided with at least one annular oil storage tank（702）。

2. a kind of rolling bearing lubrication oil baffle disc according to claim 1, is characterized in that: the location of oil baffle disc (7)Portion (703) evagination is in oil retaining part (704) 1mm～3mm.

3. a kind of rolling bearing lubrication oil baffle disc according to claim 1, is characterized in that: described oil baffle disc (7)External cylindrical surface relative with the inner cylinder face of bearing end cover (6), the external cylindrical surface of oil baffle disc (7) and bearing end cover (6) inner circleGap width between cylinder is 0.6mm～1.5mm.

4. a kind of rolling bearing lubrication oil baffle disc according to claim 1, is characterized in that: described oil baffle disc (7)The quantity of the annular oil storage tank (702) of external cylindrical surface is 1 or 2.

5. a kind of rolling bearing lubrication oil baffle disc according to claim 4, is characterized in that: described annular oil storage tank(702) be " U " shape.

6. a kind of rolling bearing lubrication oil baffle disc according to claim 1, is characterized in that: another of oil baffle disc (7)End middle part is provided with annular protrusion, and annular protrusion place is provided with 2 dismounting screws.