Sealing structure of bearing cover plate

Abstract

The utility model relates to the field of mechanical engineering, and discloses a sealing structure of a bearing cover plate, which comprises a bearing outer ring and a bearing inner ring, the inner wall of the bearing outer ring is rotatably connected with the outer wall of the bearing inner ring through a ball, a sealing mechanism is arranged between the bearing outer ring and the bearing inner ring, the sealing mechanism comprises a sealing ring I, and a sealing ring II is arranged between the bearing outer ring and the bearing inner ring. A second sealing ring is slidably arranged on the left side of the first sealing ring, a sealing lip is inserted into the bottom end of the first sealing ring, the outer wall of the sealing lip penetrates through the inner wall of the second sealing ring, an insertion rod is inserted into the inner wall of the sealing lip, and a control panel is fixedly connected to the left end of the insertion rod. According to the sealing device, the first sealing ring, the second sealing ring, the sealing lip, the inserting rod, the control panel, the sliding groove, the first clamping block, the first spring and the first clamping groove are arranged, so that the first sealing ring and the second sealing ring can rotate relatively, the generated friction force is small, and the friction force can be reduced while the sealing performance is ensured.

Description

Technical Field

[0001] The utility model relates to the field of mechanical engineering, in particular to a sealing structure of a bearing cover plate. Background Art

[0002] Bearings are core components widely used in mechanical equipment. They are mainly composed of inner rings, outer rings, rolling elements, and cages.

[0003] In order to reduce friction and wear during the use of bearings, it is often necessary to lubricate the bearings by adding lubricating oil. In order to maintain a good lubrication effect and working environment, and at the same time prevent dust, water, acid gas and other debris from entering the bearings, and prevent the lubricating oil from leaking, it is often necessary to seal the bearings by adding a sealing structure to the bearing cover.

[0004] At present, the existing bearing cover plate sealing structure often requires the sealing ring to fit the bearing sealing inner ring during sealing. Therefore, during actual use, there may be greater friction between the sealing ring and the bearing inner ring, thereby causing higher temperature. Therefore, a bearing cover plate sealing structure is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a sealing structure of a bearing cover plate, aiming to improve the problem of large friction between the sealing ring and the inner ring of the bearing during sealing in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sealing structure of a bearing cover plate, comprising a bearing outer ring and a bearing inner ring, the inner wall of the bearing outer ring is rotatably connected to the outer wall of the bearing inner ring by a ball, a sealing mechanism is arranged between the bearing outer ring and the bearing inner ring, the sealing mechanism comprises a sealing ring 1, a sealing ring 2 is slidably arranged on the left side of the sealing ring 1, a sealing lip is inserted into the bottom end of the sealing ring 1, the outer wall of the sealing lip penetrates the inner wall of the sealing ring 2, a plug rod is inserted into the inner wall of the sealing lip, a control panel is fixedly connected to the left end of the plug rod, a sliding groove is provided on the inner wall of the sliding groove, a card block 1 is slidably connected to the inner wall of the sliding groove, the left and right sides of the card block 1 close to the bearing inner ring are elastically connected to the inner wall of the sliding groove by a spring 1, a card groove 1 is provided on the end of the bearing inner ring close to the bearing outer ring, and the bearing outer ring is fixed to the bearing outer ring by a fixing component.

[0007] As a further description of the above technical solution:

[0008] The fixing component includes an air pressure chamber, which is opened on the inner wall of the sealing ring. The inner wall piston of the air pressure chamber is connected to a clamping block 2, and the inner wall piston of the air pressure chamber is connected to a slide. The end of the outer ring of the bearing close to the inner ring of the bearing is provided with a clamping groove 2, and the end of the slide away from the ball is rotatably connected to a screw rod, and the outer wall of the screw rod passes through and is threadedly connected to the inner wall of the sealing ring.

[0009] As a further description of the above technical solution:

[0010] The end of the slide away from the ball is fixedly connected with a triangular block, the inner wall of the sealing ring is provided with a movable groove, the inner wall of the movable groove is slidably connected with a baffle, and the left and right sides of the lower surface of the baffle are elastically connected to the inner wall of the movable groove through spring 2.

[0011] As a further description of the above technical solution:

[0012] A triangular groove having the same shape as the triangular block is formed at one end of the baffle bar close to the triangular block.

[0013] As a further description of the above technical solution:

[0014] The outer wall of the sealing ring 1 is fixedly connected with a sealing strip, the number of the sealing strips is set to two, and the two sealing strips are respectively arranged on the left and right sides of the clamping block 2.

[0015] As a further description of the above technical solution:

[0016] The shapes of the sealing ring 1 and the sealing ring 2 are both annular, and the cross-sectional shapes of the sealing ring 1 and the sealing ring 2 are both E-shaped, and the protrusions and depressions of the sealing ring 1 and the sealing ring 2 fit each other.

[0017] As a further description of the above technical solution:

[0018] The end of the sealing ring 1 close to the inner ring of the bearing is provided with a circular ring whose shape and size match the sealing lip, and the inner wall of the end of the sealing ring 2 close to the inner ring of the bearing is provided with an arc with an angle of 350-355 degrees.

[0019] As a further description of the above technical solution:

[0020] The sealing lip is in the shape of a ring with a notch, and cut corners are provided in the middle of the upper and lower ends of the cross section of the sealing lip.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, by arranging the sealing ring 1, the sealing ring 2, the sealing lip, the plug rod, the control plate, the sliding groove, the clamping block 1, the spring 1 and the clamping groove 1, the sealing ring 1 and the sealing ring 2 can rotate relative to each other, and the oil is not easy to flow out through the gap between the sealing ring 1 and the sealing ring 2. Moreover, since there is a gap between the sealing ring 1 and the sealing ring 2, the friction force generated is small, which can achieve the goal of reducing the friction force while ensuring the sealing performance.

[0023] 2. In the utility model, by arranging the air pressure chamber, the second clamping block, the slide plate, the screw, the triangular block, the movable groove, the baffle, the second spring, the fixing assembly, the sealing strip, the second clamping groove and the triangular groove, the sealing ring 1 can be well fixed to the outer ring of the bearing, and in the process of fixing the sealing ring 1 to the outer ring of the bearing, the sealing ring 2 can be fixed to the inner ring of the bearing, thereby ensuring that the sealing ring 1 and the sealing ring 2 can be well fixed to and separated from the outer ring of the bearing or the inner ring of the bearing, and ensuring that cleaning and adding lubricating oil are easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the overall structure of the utility model;

[0026] Figure 3 For the utility model Figure 2 A magnified schematic diagram of the three-dimensional structure of part A;

[0027] Figure 4 For the utility model Figure 3 A magnified schematic diagram of the three-dimensional structure of part B;

[0028] Figure 5 For the utility model Figure 3 Schematic diagram of the enlarged three-dimensional structure of part C in the middle.

[0029] Legend:

[0030] 1. Bearing outer ring; 2. Bearing inner ring; 3. Ball; 4. Sealing mechanism; 41. Sealing ring 1; 42. Sealing ring 2; 43. Sealing lip; 44. Insert rod; 45. Control panel; 46. Sliding groove; 47. Block 1; 48. Spring 1; 49. Slot 1; 51. Air pressure chamber; 52. Block 2; 53. Slide plate; 54. Screw; 55. Triangular block; 56. Moving groove; 57. Baffle; 58. Spring 2; 5. Fixed assembly; 6. Sealing strip; 59. Slot 2; 510. Triangular groove. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a sealing structure of a bearing cover plate, comprising a bearing outer ring 1 and a bearing inner ring 2, the inner wall of the bearing outer ring 1 and the outer wall of the bearing inner ring 2 are rotatably connected through a ball 3, the inner side of the bearing outer ring 1 and the outer side of the bearing inner ring 2 are provided with a groove matching the shape of the ball 3, a sealing mechanism 4 is arranged between the bearing outer ring 1 and the bearing inner ring 2, the sealing mechanism 4 comprises a sealing ring 1 41, a sealing ring 2 42 is slidably arranged on the left side of the sealing ring 1 41, the shapes of the sealing ring 1 41 and the sealing ring 2 42 are both annular, and the cross-sectional shapes of the sealing ring 1 41 and the sealing ring 2 42 are both E-shaped, the protrusions and depressions of the sealing ring 1 41 and the sealing ring 2 42 are matched with each other, and the matching relationship is set to ensure that the oil is difficult to flow out through the protruding grooves of the sealing ring 1 41 and the sealing ring 2 42.

[0033] Reference Figure 2 , Figure 3 and Figure 5 The bottom end of the sealing ring 1 41 is plugged with a sealing lip 43, and the outer wall of the sealing lip 43 penetrates the inner wall of the sealing ring 2 42. The setting of the sealing lip 43 can block the gap between the bearing inner ring 2 and the sealing ring 2 42, and makes it more difficult for oil to pass through the gap between the sealing ring 1 41 and the sealing ring 2 42. The end of the sealing ring 1 41 close to the bearing inner ring 2 is provided with a ring whose shape and size match the sealing lip 43, and the inner wall of the end of the sealing ring 2 42 close to the bearing inner ring 2 is provided with an arc with an angle of 350-355 degrees. The sealing lip 43 is provided with a sealing lip 43. The shape of the sealing lip 43 is a ring with a notch. The shape of the sealing lip 43 and the grooves provided on the sealing ring 1 41 and the sealing ring 2 42 ensure that the sealing lip 43 can be installed inside the sealing ring 2 42, and when the sealing ring 1 41 and the sealing ring 2 42 are in contact with each other, they are located in the groove provided in the sealing ring 1 41, thereby achieving the effect of blocking the outflow of oil. The middle parts of the upper and lower ends of the cross section of the sealing lip 43 are provided with cut corners. The setting of the cut corners ensures that the sealing lip 43 can be elastically deformed under the action of its own shape memory effect, so as to achieve a better sealing effect.

[0034] Reference Figure 2 , Figure 3 and Figure 5A plug rod 44 is inserted into the inner wall of the sealing lip 43, and a control board 45 is fixedly connected to the left end of the plug rod 44. A sliding groove 46 is provided on the inner wall of the sealing ring 42, and a block 47 is slidably connected to the inner wall of the sliding groove 46. An end of the block 47 away from the ball 3 is provided with an inclined cut angle. The left and right sides of the end of the block 47 close to the bearing inner ring 2 are elastically connected to the inner wall of the sliding groove 46 through a spring 48. One end of the spring 48 is fixedly connected to the left and right sides of the end of the block 47 close to the bearing inner ring 2, and the other end of the spring 48 is fixedly connected to the inner wall of the sliding groove 46. A slot 49 is provided at the end of the bearing inner ring 2 close to the bearing outer ring 1, and the shape and size of the slot 49 match the block 47.

[0035] Reference Figure 2 - Figure 4 The outer ring 1 of the bearing is fixed to the outer ring 1 of the bearing through a fixing component 5. The fixing component 5 includes an air pressure chamber 51. The air pressure chamber 51 is formed by connecting a circular ring with a plurality of rectangular parallelepiped shapes. A protrusion is provided at the end of the rectangular parallelepiped part of the air pressure chamber 51 closest to the ball 3. The air pressure chamber 51 is opened on the inner wall of the sealing ring 1 41. The inner wall piston of the air pressure chamber 51 is connected with a block 2 52. The outer wall of the sealing ring 1 41 is fixedly connected with a sealing strip 6. The number of the sealing strips 6 is set to two. The material of the sealing strip 6 is set to rubber, and the interior of the sealing strip 6 is set to be hollow. , and two sealing strips 6 are respectively arranged on the left and right sides of the second block 52. The position setting of the sealing strips 6 ensures that the second block 52 is not easily contaminated by the inside and the outside. The inner wall piston of the air pressure chamber 51 is connected with a slide plate 53, and the outer wall of the slide plate 53 is in contact with the inner wall of the air pressure chamber 51. A second groove 59 is opened at one end of the bearing outer ring 1 close to the bearing inner ring 2. The shape and size of the second groove 59 match the second block 52. The end of the slide plate 53 away from the ball 3 is rotatably connected with a screw rod 54. The outer wall of the screw rod 54 penetrates and is threadedly connected with the inner wall of the sealing ring 41.

[0036] Reference Figure 2 - Figure 4 The end of the slide plate 53 away from the ball 3 is fixedly connected with a triangular block 55, the inner wall of the sealing ring 41 is provided with a movable groove 56, and the inner wall of the movable groove 56 is slidably connected with a baffle 57, and the end of the baffle 57 close to the bearing inner ring 2 is provided with a cut angle on the side away from the ball 3, and the left and right sides of the lower surface of the baffle 57 are elastically connected to the inner wall of the movable groove 56 through a spring 58, one end of the spring 58 is fixedly connected to the left and right sides of the lower surface of the baffle 57, and the other end of the spring 58 is fixedly connected to the inner wall of the movable groove 56, and the end of the baffle 57 close to the triangular block 55 is provided with a triangular groove 510 with the same shape as the triangular block 55.

[0037] Working principle: During use, when the staff installs the equipment, they first fit the sealing ring 1 41 and the sealing ring 2 42 in a matching manner, and then insert the sealing lip 43 into the groove inside the sealing ring 2 42 and make it enter the groove inside the sealing ring 1 41.

[0038] After inserting the sealing lip 43, the staff puts the sealing ring 1 41 and the sealing ring 2 42 on the left and right sides of the bearing outer ring 1 and the bearing inner ring 2. After the placement is completed, the staff rotates the screw 54, so that the screw 54 drives the slide plate 53 to move in the direction close to the ball 3, thereby increasing the air pressure inside the air pressure chamber 51, so that the block 2 52 enters the groove 2 59 under the action of the air pressure. At this time, the sealing ring 1 41 is fixed to the bearing outer ring 1.

[0039] Subsequently, the staff pushes the control panel 45 toward the end close to the ball 3, so that the control panel 45 moves to contact the inclined surface of the baffle 57, and then pushes the baffle 57 to move toward the end away from the bearing inner ring 2. When the control panel 45 moves to the side of the baffle 57 close to the ball 3, the baffle 57 is reset under the action of the spring 2 58.

[0040] When the control board 45 moves, it drives the insertion rod 44 to enter the groove inside the sealing lip 43, so that the sealing lip 43 is fixed to the sealing ring 42, and at this time, the outer side of the sealing ring 42 is in contact with the outer wall of the bearing inner ring 2, which can prevent the oil from flowing out through the gap between the sealing ring 42 and the bearing inner ring 2.

[0041] At the same time, when the insertion rod 44 enters the sealing lip 43, the insertion rod 44 squeezes the inclined surface of the clamping block 47, so that the clamping block 47 enters the clamping groove 49, thereby making the sealing ring 42 and the inside of the sealing ring 41.

[0042] At this time, when the staff uses the equipment, since the sealing ring 1 41 and the sealing ring 2 42 are only in a fitting relationship, the sealing ring 1 41 and the sealing ring 2 42 can rotate relatively, and due to the convex and concave fitting relationship between the sealing ring 1 41 and the sealing ring 2 42, it is difficult for oil to pass through the inside of the sealing ring 1 41 and the sealing ring 2 42, and at this time, the friction part is only the top part of the sealing lip 43, so the friction generated is relatively small.

[0043] When the staff needs to remove the sealing ring 1 41 and the sealing ring 2 42 for equipment maintenance, the staff first rotates the screw 54 to move the slide plate 53 in the direction away from the ball 3, thereby reducing the gas pressure inside the air pressure chamber 51, so that the block 2 52 enters the air pressure chamber 51 under the action of the air pressure, thereby releasing the fixing effect of the sealing ring 1 41 and the outer ring 1 of the bearing, and at the same time, the triangular block 55 enters the triangular groove 510, so that the baffle 57 leaves the area where the control board 45 is located. At this time, the staff moves the control board 45 toward the end away from the ball 3, and the block 1 47 can leave the groove 1 49 driven by the spring 1 48, thereby separating the sealing ring 2 42 from the inner ring 2 of the bearing.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing structure of a bearing cover plate, comprising a bearing outer ring (1) and a bearing inner ring (2), characterized in that: The inner wall of the bearing outer ring (1) and the outer wall of the bearing inner ring (2) are rotatably connected via balls (3); a sealing mechanism (4) is provided between the bearing outer ring (1) and the bearing inner ring (2); the sealing mechanism (4) comprises a sealing ring 1 (41); a sealing ring 2 (42) is slidably disposed on the left side of the sealing ring 1 (41); a sealing lip (43) is inserted at the bottom end of the sealing ring 1 (41); the outer wall of the sealing lip (43) passes through the inner wall of the sealing ring 2 (42); a plug rod (44) is inserted into the inner wall of the sealing lip (43); The left end of the insertion rod (44) is fixedly connected to a control plate (45), the inner wall of the sealing ring (42) is provided with a sliding groove (46), the inner wall of the sliding groove (46) is slidably connected to a clamping block (47), the left and right sides of one end of the clamping block (47) close to the bearing inner ring (2) are elastically connected to the inner wall of the sliding groove (46) through a spring (48), the end of the bearing inner ring (2) close to the bearing outer ring (1) is provided with a clamping groove (49), and the bearing outer ring (1) is fixed to the bearing outer ring (1) through a fixing component (5).

2. A sealing structure for a bearing cover plate according to claim 1, characterized in that: The fixing assembly (5) comprises an air pressure chamber (51), the air pressure chamber (51) is provided on the inner wall of the sealing ring (41), the inner wall piston of the air pressure chamber (51) is connected to a clamping block (52), the inner wall piston of the air pressure chamber (51) is connected to a slide plate (53), the end of the bearing outer ring (1) close to the bearing inner ring (2) is provided with a clamping groove (59), the end of the slide plate (53) away from the ball (3) is rotatably connected to a screw rod (54), the outer wall of the screw rod (54) penetrates and is threadedly connected to the inner wall of the sealing ring (41).

3. A sealing structure for a bearing cover plate according to claim 2, characterized in that: The end of the slide plate (53) away from the ball (3) is fixedly connected to a triangular block (55), the inner wall of the sealing ring (41) is provided with a movable groove (56), the inner wall of the movable groove (56) is slidably connected to a baffle (57), and the left and right sides of the lower surface of the baffle (57) are elastically connected to the inner wall of the movable groove (56) via a second spring (58).

4. A sealing structure for a bearing cover plate according to claim 3, characterized in that: One end of the blocking bar (57) close to the triangular block (55) is provided with a triangular groove (510) having the same shape as the triangular block (55).

5. The sealing structure of a bearing cover plate according to claim 2, characterized in that: The outer wall of the sealing ring 1 (41) is fixedly connected with a sealing strip (6), the number of the sealing strips (6) is set to two, and the two sealing strips (6) are respectively arranged on the left and right sides of the clamping block 2 (52).

6. The sealing structure of a bearing cover plate according to claim 1, characterized in that: The shapes of the sealing ring 1 (41) and the sealing ring 2 (42) are both annular, and the cross-sectional shapes of the sealing ring 1 (41) and the sealing ring 2 (42) are both E-shaped, and the protrusions and depressions of the sealing ring 1 (41) and the sealing ring 2 (42) fit each other.

7. The sealing structure of a bearing cover plate according to claim 1, characterized in that: The end of the sealing ring 1 (41) close to the bearing inner ring (2) is provided with a circular ring whose shape and size match the sealing lip (43), and the inner wall of the end of the sealing ring 2 (42) close to the bearing inner ring (2) is provided with an arc with an angle of 350-355 degrees.

8. The sealing structure of a bearing cover plate according to claim 1, characterized in that: The sealing lip (43) is in the shape of a ring with a notch, and a cut corner is provided in the middle of the upper and lower ends of the cross section of the sealing lip (43).

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