Oil ring guide protection structure of end cover type sliding bearing

Abstract

The utility model discloses an oil ring guide protection structure of an end cover type sliding bearing, which comprises a bearing seat, a bearing bush and an oil ring, a rotating shaft is arranged in the bearing seat, a bearing bush connecting seat is arranged in the bearing seat, the bearing bush consisting of two bearing bush blocks is arranged in the middle of the bearing bush connecting seat, and an oil storage chamber is arranged in the bearing bush connecting seat. A bearing bush oil ring eccentric arc-shaped groove is formed in the middle of the inner side wall of a bearing bush block on the upper portion, an oil ring is hung on the rotating shaft and inserted in the bearing bush oil ring eccentric arc-shaped groove in a sleeved mode, an oil ring guiding piece is embedded in the bearing bush oil ring eccentric arc-shaped groove, and an upper annular groove is formed in the middle of the inner side wall of the oil ring guiding piece. The left side wall and the right side wall of the oil ring guide piece are fixed to the left inner side wall and the right inner side wall of the bearing bush oil ring eccentric arc-shaped groove. The annular guide plate capable of buffering and adjusting is arranged in the oil ring guide piece to guide the oil ring, so that the oil ring is not prone to being collided and damaged by the oil ring, and the service life is prolonged.

Description

Technical field:

[0001] The utility model relates to the technical field of sliding bearing equipment, and more specifically to an oil ring guide protection structure of an end cover type sliding bearing. Background technology:

[0002] During the operation of the motor, the end cover type sliding bearing needs oil lubrication and cooling. Since the motor of the end cover type sliding bearing generally has tight space requirements and the structural characteristics of the end cover type bearing itself, the oil ring self-lubrication method is often adopted. The main working principle of the oil ring with oil is that the oil ring is hung on the shaft, and the bottom of the oil ring is immersed below the liquid level of the oil chamber. When the shaft rotates, the contact friction between the oil ring and the rotating body makes the oil ring rotate with it, thereby bringing the oil in the oil chamber to the relative motion surface.

[0003] The oil ring is safe and stable during normal operation; in case of emergencies, it will collide with the oil ring groove of the bearing. The oil ring rotates at high speed with the shaft. Both the oil ring and the bearing are made of metal. The friction between the two will produce tiny metal particles that enter the surface of the bearing and destroy the oil film formation. In severe cases, it will cause the bearing to burn.

[0004] Therefore, China's patent application number is 201821733633.3, which is an oil ring guide structure for an end cover type sliding bearing. An oil ring guide portion is provided so that the oil ring will not directly contact the eccentric arc groove of the bearing oil ring when swinging, thereby ensuring the normal use of the bearing and improving the service life. However, the oil ring guide portion is hard-connected and fixed. Therefore, when the oil ring touches it, it is also a hard collision, which can easily cause the oil ring guide portion to deform or damage, and the service life is not long. Utility model content:

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an oil ring guide protection structure for an end cover type sliding bearing, which guides the oil ring by arranging an annular guide plate that can be buffered and adjusted in the oil ring guide, so that the oil ring is not easily damaged by the collision of the oil ring, thereby improving the service life.

[0006] The solution of the utility model to solve the technical problem is:

[0007] An oil ring guide protection structure of an end cover type sliding bearing comprises a bearing seat, a bearing shell and an oil ring, a rotating shaft is located in the bearing seat, a bearing shell connecting seat is provided inside the bearing seat, a bearing shell composed of two bearing shell blocks is installed in the middle of the bearing shell connecting seat, an oil storage chamber is provided in the bearing shell connecting seat, the rotating shaft is inserted in the bearing shell, an eccentric arc groove for the bearing shell oil ring is provided in the middle of the inner wall of the upper bearing shell block, the oil ring is hung on the rotating shaft and inserted in the eccentric arc groove of the bearing shell oil ring, an oil ring guide is nested in the eccentric arc groove of the bearing shell oil ring, an upper annular groove is formed in the middle of the inner wall of the oil ring guide, the left and right walls of the oil ring guide are fixed on the left and right inner walls of the eccentric arc groove of the bearing shell oil ring, two annular guide plates with buffer structures are installed on the left and right walls of the upper annular groove, the upper part of the oil ring is located between the two annular guide plates, and the lower part of the oil ring is located in the oil storage chamber. The buffer structure makes the annular guide plate elastic, so that when the oil ring touches the annular guide plate, the impact force can be reduced through elastic deformation, so that the annular guide plate can reduce the probability of breakage and increase its service life while achieving guidance.

[0008] A wear-resistant lubricating layer is compounded on the wall surface of the bearing bush, and the wear-resistant lubricating layer is in contact with the outer side wall of the rotating shaft.

[0009] The buffer structure includes a silicone rubber arc sheet fixed on the left and right walls of the upper annular groove, a plurality of elastic parts are formed on the silicone rubber arc sheet, the ends of all the elastic parts on the same side are formed on a second silicone rubber arc sheet, and annular guide plates are fixed on the opposite wall surfaces of the two second silicone rubber arc sheets.

[0010] The oil ring guide is a polytetrafluoroethylene member.

[0011] A through hole extending upward is formed in the middle of the top surface of the upper annular groove, and the through hole is communicated with and aligned with a vertical through hole formed in the middle top surface of the eccentric arc groove of the bearing oil ring.

[0012] The annular guide plate is a polytetrafluoroethylene plate.

[0013] The outstanding effects of the utility model are:

[0014] Compared with the prior art, the oil ring guide is guided by arranging a buffer-adjustable annular guide plate in the oil ring guide, so that the oil ring is not easily damaged by the collision of the oil ring, thereby increasing the service life. Description of the drawings:

[0015] Figure 1 It is a partial structural schematic diagram of the utility model;

[0016] Figure 2 It is a partial cross-sectional view of the utility model;

[0017] Figure 3 yes Figure 1 A partial enlarged view of . Specific implementation method:

[0018] For example, see Figures 1 to 3 As shown, an oil ring guide protection structure of an end cover type sliding bearing includes a bearing seat 1, a bearing shell 2 and an oil ring 3. The middle parts of the left and right ends of the bearing seat 1 are formed with mounting through holes 11, the middle part of the left end of the bearing seat 1 is fixed with a bearing end cover 12, and the right end of the bearing seat 1 is fixed with an external connection end cover 13. The rotating shaft 10 is inserted into the mounting through hole 11, the bearing end cover 12 and the external connection end cover 13. The rotating shaft 10 is in the bearing seat 1, and the inner side walls of the bearing end cover 12, the external connection end cover 13 and the mounting through hole 11 at the right end are fixed with sealing rings 5, and the outer side wall of the rotating shaft 10 is pressed against the inner side wall of the corresponding sealing ring 5.

[0019] Furthermore, the bearing seat 1 is provided with a bearing bush connection seat 14, and a bearing bush 2 composed of two upper and lower bearing bush blocks is installed in the middle of the bearing bush connection seat 14. The bearing bush connection seat 14 has an oil storage chamber 15, and the rotating shaft 10 is inserted in the bearing bush 2. The middle part of the inner wall of the upper bearing bush block has an eccentric arc groove 21 for the bearing bush oil ring, and the front and rear parts of the inner wall of the lower bearing bush block are formed with side through grooves extending from the front and rear side walls of the lower bearing bush block. The oil ring 3 is hung on the rotating shaft 10 and inserted in the eccentric arc groove 21 of the bearing bush oil ring. In the arc groove 21 and the two side through grooves, an oil ring guide 30 is nested in the eccentric arc groove 21 of the bearing oil ring, an upper annular groove 31 is formed in the middle of the inner wall of the oil ring guide 30, the left and right walls of the oil ring guide 30 are fixed on the left and right inner walls of the eccentric arc groove 21 of the bearing oil ring, two annular guide plates 32 with a buffer structure are installed on the left and right walls of the upper annular groove 31, the upper part of the oil ring 3 is between the two annular guide plates 32, and the lower part of the oil ring 3 is in the oil storage chamber 15.

[0020] Furthermore, a wear-resistant lubricating layer 24 is compounded on the inner wall of the bearing shell 2 , and the wear-resistant lubricating layer 24 is in contact with the outer wall of the rotating shaft 10 .

[0021] Furthermore, an anti-rotation pin 8 is fixed to the mounting wall of the bearing connection seat 14 , and the portion of the anti-rotation pin 8 extending out of the mounting wall of the bearing connection seat 14 is inserted into a positioning hole provided on the mounting wall of the bearing 2 .

[0022] Furthermore, the buffer structure includes a silicone rubber arc sheet 33 fixed on the left and right walls of the upper annular groove 31, and a plurality of elastic parts 34 are formed on the silicone rubber arc sheet 33. The elastic parts 34 are silicone rubber parts. The ends of all the elastic parts 34 on the same side are formed on a second silicone rubber arc sheet 35, and annular guide plates 32 are fixed on the opposite wall surfaces of the two second silicone rubber arc sheets 35.

[0023] At the same time, polytetrafluoroethylene plates 9 are fixed on the inner side walls of the two side through grooves of the lower bearing block, so as to guide and prevent the lower side wall of the oil ring 3.

[0024] The oil ring guide 30 is a polytetrafluoroethylene member. The annular guide plate 32 is a polytetrafluoroethylene plate.

[0025] A through hole extending upward is formed in the middle of the top surface of the upper annular groove 31 , and the through hole is communicated with and aligned with a vertical through hole 221 formed in the middle top surface of the eccentric arc groove 21 of the bearing oil ring.

[0026] When this embodiment is in use, when the oil ring 3 rotates with the rotating shaft 10, it drives the oil in the oil storage chamber 15 along with the oil ring 3 to the bearing 2 and the rotating shaft 10 to achieve lubrication. When the oil ring 3 rotates, the two annular guide plates 32 realize the guiding and limiting effect, ensuring that the oil ring 3 will not contact the eccentric arc groove 21 of the bearing oil ring, thereby reducing wear, ensuring the integrity of the oil film in contact between the bearing 2 and the rotating shaft 10, increasing the service life of the bearing 2, and ensuring the normal operation of the bearing 2.

[0027] Moreover, due to the elastic effect of the elastic part 34, when the oil ring 3 touches the annular guide plate 32, the impact force between the oil ring 3 and the annular guide plate 32 can be reduced through the elastic deformation of the elastic part 34, thereby achieving a buffering effect, greatly reducing the probability of damage to the annular guide plate 32 and increasing its service life.

Claims

1. An oil ring guide protection structure of an end cover type sliding bearing, comprising a bearing seat (1), a bearing bush (2) and an oil ring (3), wherein a rotating shaft (10) is located in the bearing seat (1), and characterized in that: The bearing seat (1) is provided with a bearing bush connecting seat (14) inside, a bearing bush (2) composed of two bearing bush blocks is installed in the middle of the bearing bush connecting seat (14), an oil storage chamber (15) is provided in the bearing bush connecting seat (14), a rotating shaft (10) is inserted into the bearing bush (2), an eccentric arc groove (21) for a bearing bush oil ring is provided in the middle of the inner side wall of the upper bearing bush block, an oil ring (3) is hung on the rotating shaft (10) and inserted into the eccentric arc groove (21) for the bearing bush oil ring, and an oil ring (3) is embedded in the eccentric arc groove (21) for the bearing bush oil ring. An oil ring guide (30) is sleeved, an upper annular groove (31) is formed in the middle of the inner side wall of the oil ring guide (30), the left side wall and the right side wall of the oil ring guide (30) are fixed to the left and right inner side walls of the eccentric arc groove (21) of the bearing oil ring, two annular guide plates (32) with a buffer structure are installed on the left and right walls of the upper annular groove (31), the upper part of the oil ring (3) is located between the two annular guide plates (32), and the lower part of the oil ring (3) is located in the oil storage chamber (15).

2. The oil ring guide protection structure of an end cover type sliding bearing according to claim 1, characterized in that: A wear-resistant lubricating layer (24) is compounded on the wall surface of the bearing bush (2), and the wear-resistant lubricating layer (24) is in contact with the outer wall of the rotating shaft (10).

3. The oil ring guide protection structure of an end cover type sliding bearing according to claim 1, characterized in that: An anti-rotation pin (8) is fixed on the mounting wall surface of the bearing shell connection seat (14), and the portion of the anti-rotation pin (8) extending out of the mounting wall surface of the bearing shell connection seat (14) is inserted into a positioning hole provided on the mounting wall surface of the bearing shell (2).

4. The oil ring guide protection structure of an end cover type sliding bearing according to claim 1, characterized in that: The buffer structure comprises a silicone rubber arc sheet (33) fixed on the left and right walls of the upper annular groove (31), a plurality of elastic parts (34) are formed on the silicone rubber arc sheet (33), the ends of all the elastic parts (34) on the same side are formed on a second silicone rubber arc sheet (35), and annular guide plates (32) are fixed on the opposite wall surfaces of the two second silicone rubber arc sheets (35).

5. The oil ring guide protection structure of an end cover type sliding bearing according to claim 1, characterized in that: The oil ring guide (30) is a polytetrafluoroethylene member.

6. The oil ring guide protection structure of an end cover type sliding bearing according to claim 1, characterized in that: A through hole extending upward is formed in the middle of the top surface of the upper annular groove (31), and the through hole is communicated with and aligned with a vertical through hole (221) formed in the middle top surface of the eccentric arc groove (21) of the bearing oil ring.

7. The oil ring guide protection structure of an end cover type sliding bearing according to claim 4, characterized in that: The annular guide plate (32) is a polytetrafluoroethylene plate.

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