Lubricating and sealing structure for bearing of crusher

Abstract

The utility model discloses a crusher bearing lubrication sealing structure, which comprises a crusher main shaft, a fixed seat, a roller bearing, oil slingers and an end cover, the outer ring of the roller bearing is fixed on the fixed seat, the inner ring of the roller bearing and the oil slingers are sleeved on the shaft neck part of the crusher main shaft, and the oil slingers are positioned at the two ends of the roller bearing. The end covers are arranged at two ends of the fixing seat, a lubricating oil cavity is formed between the end covers and the fixing seat, and the fixing seat is provided with a lubricating oil circulating inlet and a lubricating oil circulating outlet which are communicated with the lubricating oil cavity. The lubricating oil cavity is formed between the fixed seat and the end cover, and the lubricating oil circulating inlet and the lubricating oil circulating outlet are formed, so that thin oil circulating lubrication replaces traditional butter lubrication to lubricate the bearing of the crusher; the oil throwing piece is arranged on the shaft neck portion of the crusher main shaft in a sleeving mode and used for preventing lubricating oil from being thrown out of the gap between the main shaft and the end cover due to centrifugal force or vibration in the bearing operation process, and waste of the lubricating oil and pollution to the working environment are avoided.

Description

Technical Field

[0001] This utility model relates to the field of bearing lubrication structure, and in particular to a bearing lubrication and sealing structure for a crusher. Background Technology

[0002] Traditional crusher spindle bearings are typically lubricated with grease. While this method can meet the operational needs of low-speed, small crushers, it is less effective for large or heavy-duty crushers. The poor heat dissipation of grease leads to high operating temperatures during shaft rotation, which can cause seizing after a period of operation, increasing downtime and affecting crushing efficiency. Furthermore, for high-speed rotating shafts, grease is easily thrown out by centrifugal force, making it difficult to form a stable lubricating film and resulting in ineffective lubrication of the bearings. Therefore, grease lubrication is ineffective in handling higher-speed and heavier-load conditions and cannot meet the lubrication requirements of crushers.

[0003] To overcome the drawbacks of grease lubrication, some manufacturers have begun to experiment with thin oil circulation lubrication to replace traditional grease lubrication. This method uses a thin oil circulation system to continuously deliver lubricating oil to the inside of the bearing, forming a continuous oil film. This effectively reduces the bearing's operating temperature and improves lubrication, enabling the crusher to meet the lubrication requirements of high-speed, heavy-load conditions. However, during crusher operation, due to bearing clearances and the vibration and impact of the equipment itself, thin oil can easily be thrown out from the bearing clearances, leading to lubricating oil loss and waste. This not only increases lubricating oil consumption costs but also pollutes the external environment. Utility Model Content

[0004] The purpose of this utility model is to propose a lubrication and sealing structure for crusher bearings to solve one or more technical problems existing in the background art.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A crusher bearing lubrication and sealing structure includes a crusher main shaft, a fixed seat, a roller bearing, an oil slinger, and end caps. The fixed seat is located at both ends of the crusher main shaft. The outer ring of the roller bearing is fixed on the fixed seat. The inner ring of the roller bearing and the oil slinger are both sleeved on the journal of the crusher shaft. The oil slinger is located at both ends of the roller bearing. The end caps are located at both ends of the fixed seat. A lubricating oil cavity is formed between the end caps and the fixed seat. The fixed seat has a lubricating oil circulation inlet and a lubricating oil circulation outlet communicating with the lubricating oil cavity.

[0007] Preferably, the oil-throwing component includes an integrally formed mounting ring, a first oil baffle, a second oil baffle, and an oil-throwing end. The mounting ring is connected to the crusher shaft. The first oil baffle extends radially outward along the mounting ring. The beginning of the second oil baffle is connected to the end of the first oil baffle. The second oil baffle extends axially. The oil-throwing end is located at the end of the second oil baffle.

[0008] Preferably, an annular groove is provided on the inner side of the end cap, and the first oil baffle, the second oil baffle, and the oil-throwing end extend into the annular groove.

[0009] Preferably, it also includes a sealing ring, which is disposed between the oil slinger and the end cap.

[0010] Preferably, the outer side of the end cap has an installation cavity, and the sealing ring is disposed in the installation cavity.

[0011] Preferably, it further includes a fixing plate, which is fixed to the outside of the end cap by bolts and covers the mounting cavity.

[0012] Preferably, the lubricating oil circulation inlet is located at the top of the fixed base, and the lubricating oil circulation outlet is located at the bottom of the fixed base.

[0013] The beneficial effects of this utility model are as follows: By forming a lubricating oil cavity between the fixed seat and the end cover, and setting a lubricating oil circulation inlet and a lubricating oil circulation outlet, thin oil circulation lubrication is used to replace traditional grease lubrication for the bearing lubrication of the crusher; this ensures that the roller bearing can receive continuous and sufficient lubrication during operation, reduces the operating temperature of the bearing, improves the lubrication effect, and thus extends the service life of the bearing. Compared with the traditional grease lubrication method, the thin oil circulation method adopted by this utility model is more suitable for high-speed crushers, meets the lubrication requirements of bearings under high-speed operation, and improves the performance of the crusher; this utility model also installs an oil-throwing component on the journal of the crusher shaft to prevent lubricating oil from being thrown out from the gap between the main shaft and the end cover due to centrifugal force or vibration during bearing operation, ensuring the stability of the lubrication system and avoiding waste of lubricating oil and pollution to the working environment. Attached Figure Description

[0014] The accompanying drawings further illustrate the present invention, but the content of the drawings does not constitute any limitation on the present invention.

[0015] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0016] Figure 2 yes Figure 1 A magnified view of a portion of the image.

[0017] The components include: crusher main shaft 1, fixed seat 2, roller bearing 3, oil slinger 4, end cover 5, outer ring 31, inner ring 32, journal 11, lubricating oil chamber 21, lubricating oil circulation inlet 22, lubricating oil circulation outlet 23, mounting ring 41, first oil baffle 42, second oil baffle 43, oil slinger end 44, annular groove 24, sealing ring 6, mounting cavity 51, and fixing plate 52. Detailed Implementation

[0018] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0019] This embodiment describes a crusher bearing lubrication and sealing structure, as shown in the attached diagram. Figure 1 and 2 The system includes a crusher main shaft 1, a fixed seat 2, a roller bearing 3, an oil slinger 4, and an end cover 5. The fixed seat 2 is located at both ends of the crusher main shaft 1. The outer ring 31 of the roller bearing 3 is fixed on the fixed seat 2. The inner ring 32 of the roller bearing 3 and the oil slinger 4 are both sleeved on the journal 11 of the crusher shaft. The oil slinger 4 is located at both ends of the roller bearing 3. The end cover 5 is located at both ends of the fixed seat 2. A lubricating oil cavity 21 is formed between the end cover 5 and the fixed seat 2. The fixed seat 2 has a lubricating oil circulation inlet 22 and a lubricating oil circulation outlet 23 that communicate with the lubricating oil cavity 21.

[0020] By forming a lubricating oil cavity 21 between the fixed seat 2 and the end cover 5, the roller bearing 3 is located in the lubricating oil cavity 21. A lubricating oil circulation inlet 22 and a lubricating oil circulation outlet 23 are provided to realize the replacement of traditional grease lubrication with thin oil circulation lubrication for the bearing lubrication of the crusher. The circulating thin oil ensures that the roller bearing 3 can receive continuous and sufficient lubrication during operation, reduces the operating temperature of the bearing, improves the lubrication effect, thereby extending the service life of the bearing and avoiding shutdowns such as jamming. Compared with the traditional grease lubrication method, the thin oil circulation method adopted in this embodiment is more suitable for high-speed crushers, meets the lubrication requirements of bearings under high-speed operation, and improves the performance of the crusher. In this embodiment, an oil-throwing component 4 is also fitted on the journal 11 of the crusher shaft to prevent lubricating oil from being thrown out from the gap between the main shaft and the end cover 5 due to centrifugal force or vibration during bearing operation, ensuring the stability of the lubrication system and avoiding waste of lubricating oil and pollution of the working environment.

[0021] Preferably, the oil-throwing component 4 includes an integrally formed mounting ring 41, a first oil baffle 42, a second oil baffle 43, and an oil-throwing end 44. The mounting ring 41 is connected to the crusher shaft. The first oil baffle 42 extends outward along the radial direction of the mounting ring 41. The beginning of the second oil baffle 43 is connected to the end of the first oil baffle 42. The second oil baffle 43 extends axially. The oil-throwing end 44 is located at the end of the second oil baffle 43.

[0022] The oil-throwing component 4 adopts an integral molding structure, with no gaps between the mounting ring 41, the first oil baffle 42, the second oil baffle 43, and the oil-throwing end 44, effectively enhancing the oil-blocking effect. The mounting ring 41 is used to fit onto the journal 11 of the crusher shaft, enabling the oil-throwing component 4 to be installed integrally with the crusher main shaft 1, allowing the oil-throwing component 4 to rotate with the crusher main shaft 1. A rotational gap is formed between the outer side of the mounting ring 41 and the end cover 5, allowing the mounting ring 41 to rotate. The first oil baffle 42 extends radially outward along the mounting ring 41. The first oil baffle 42 is positioned between the roller bearing 3 and the rotation gap, thus preventing thin oil from entering the rotation gap to a certain extent. The second oil baffle 43 is connected to the first oil baffle 42 and extends axially, that is, parallel to the rotation gap, forming a continuous oil baffle structure, which further prevents thin oil from entering the rotation gap. The end of the second oil baffle 43 is provided with an oil throwing end 44, which uses the centrifugal force generated when the oil throwing component 4 rotates to throw the thin oil away from the rotation gap, further preventing the thin oil from flowing towards the position of the rotation gap.

[0023] Preferably, an annular groove 24 is formed on the inner side of the end cover 5, and the first oil baffle 42, the second oil baffle 43, and the oil-throwing end 44 extend into the annular groove 24. By forming an annular groove 24 on the inner side of the end cover 5, not only can the first oil baffle 42, the second oil baffle 43, and the oil-throwing end 44 of the oil-throwing component 4 be accommodated, but the capacity of the lubricating oil cavity 21 can also be increased, allowing it to hold more lubricating oil and improving the lubrication effect.

[0024] Preferably, it also includes a sealing ring 6, which is disposed between the oil slinger 4 and the end cap 5. By providing a sealing ring 6 between the oil slinger 4 and the end cap 5, the lubricating oil is further prevented from being thrown out from the rotational gap between the oil slinger 4 and the end cap 5, thus avoiding pollution to the external environment.

[0025] Furthermore, an installation cavity 51 is provided on the outer side of the end cap 5, and the sealing ring 6 is disposed in the installation cavity 51. By providing an installation cavity 51 in the end cap 5, the sealing ring 6 is fixed and the inner side of the sealing ring 6 is ensured to be in contact with the oil slinger 4. When the oil slinger 4 rotates, the sealing ring 6 remains stationary.

[0026] Furthermore, a fixing plate 52 is included. The fixing plate 52 is fixed to the outside of the end cover 5 with bolts, and the fixing plate 52 covers the mounting cavity 51. By setting the fixing plate 52 to cover the mounting cavity 51, the sealing ring 6 inside the mounting cavity 51 is protected, preventing external impurities, dust, or moisture from entering the mounting cavity 51. When maintenance or replacement of the sealing ring 6 is required, only the fixing plate 52 needs to be removed for operation, without having to remove the entire end cover 5, which facilitates maintenance.

[0027] Preferably, the lubricating oil circulation inlet 22 is located at the top of the fixed base 2, and the lubricating oil circulation outlet 23 is located at the bottom of the fixed base 2. By placing the lubricating oil circulation inlet 22 at the top of the fixed base 2, gravity allows the lubricating oil to flow more easily into the lubricating oil cavity 21, ensuring that the roller bearing 3 is adequately lubricated. At the same time, placing the lubricating oil circulation outlet 23 at the bottom of the fixed base 2 allows the lubricating oil to flow in the roller shaft and the lubricating oil cavity 21 under the action of gravity, forming an effective lubricating oil circulation path.

[0028] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without any inventive effort, and these embodiments will all fall within the scope of protection of this utility model.

Claims

1. A crusher bearing lubrication seal arrangement, characterized by, The crusher spindle, the fixed seat, the roller bearing, the oil throwing part and the end cover are included, the fixed seat is arranged at both ends of the crusher spindle, the outer ring of the roller bearing is fixed on the fixed seat, the inner ring of the roller bearing and the oil throwing part are sleeved on the journal part of the crusher spindle, the oil throwing part is located at both ends of the roller bearing, the end cover is arranged at both ends of the fixed seat, the lubricating oil cavity is formed between the end cover and the fixed seat, and the lubricating oil circulation inlet and the lubricating oil circulation outlet are arranged in the fixed seat and communicated with the lubricating oil cavity.

2. A crusher bearing lubrication seal arrangement according to claim 1, characterised in that, The oil throwing part includes an integral mounting ring, a first oil baffle, a second oil baffle and an oil throwing end, the mounting ring is connected with the crusher spindle, the first oil baffle extends outward along the radial direction of the mounting ring, the beginning end of the second oil baffle is connected with the end of the first oil baffle, the second oil baffle extends along the axial direction, and the oil throwing end is arranged at the end of the second oil baffle.

3. A crusher bearing lubrication seal arrangement according to claim 2, characterised in that, The inner side of the end cover is provided with an annular groove, and the first oil baffle, the second oil baffle and the oil throwing end are arranged in the annular groove.

4. A crusher bearing lubrication seal arrangement according to claim 1, wherein, A sealing ring is further included, and the sealing ring is arranged between the oil throwing part and the end cover.

5. A crusher bearing lubrication seal arrangement according to claim 4, wherein, An installation cavity is arranged on the outer side of the end cover, and the sealing ring is arranged in the installation cavity.

6. A crusher bearing lubrication seal arrangement according to claim 5, wherein, A fixed plate is further included, and the fixed plate is fixed on the outer side of the end cover through bolts, and the fixed plate covers the installation cavity.

7. A crusher bearing lubrication seal arrangement according to claim 1 wherein, The lubricating oil circulation inlet is arranged at the top of the fixed seat, and the lubricating oil circulation outlet is arranged at the bottom of the fixed seat.

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