Dynamic balance lubrication type floating ring bearing

Abstract

The utility model discloses a dynamic balance lubrication type floating ring bearing, and belongs to the technical field of bearings. The structure comprises a shaft neck (1) and a floating ring (2), the inner wall of the floating ring (2) is of an arc-shaped structure which is concave towards the outer side, the shaft neck (1) is arranged in the floating ring (2) in a penetrating mode, and the shaft neck (1) and the floating ring (2) are arranged in a spaced mode. According to the structure, the inner wall of the floating ring (2) is arranged to be of the inwards-concave arc-shaped structure, so that lubricating oil gathers towards the center, distribution and flowing of the lubricating oil are dynamically adjusted, the lubricating oil can reach a dynamic balance state during working, the bearing is always in a good lubricating state, vibration and abrasion of mechanical equipment are reduced, and the service life of the bearing is prolonged. Therefore, the service life and the working efficiency of equipment are improved. The problem that lubricating oil accumulates on the two sides of the outer side of an existing floating ring bearing due to the centrifugal force when the existing floating ring bearing works, and the bearing lubricating effect is poor is solved.

Description

Technical Field

[0001] The utility model discloses a dynamic balance lubricating floating ring bearing, belonging to the technical field of bearings. Background Art

[0002] As one of the important load-bearing components, the load-bearing capacity of the floating ring bearing often determines the mechanical load-bearing capacity of the workpiece. Compared with ordinary sliding bearings and rolling bearings, using a floating sleeve bearing to replace the traditional sliding bearing is a good way. After splitting the original bearing into two parts by the floating sleeve bearing, a friction pair is added, so the contact area of the friction surface is increased, the relative rotational speed between the moving surfaces is reduced, and at the same time, a double-layer lubrication effect is achieved, improving the durability and reliability of the mechanical operation.

[0003] The adhesive wear failure of the existing floating ring bearing is due to the fact that the necessary conditions for the bearing to establish hydrodynamic lubrication are damaged due to wear, and a complete oil film lubrication state cannot be established. Therefore, whether it can have a good lubrication state is an important standard for the floating ring bearing. Therefore, a good lubrication environment and conditions are very important for the normal operation of the floating sleeve bearing. For the performance improvement of the floating ring bearing, whether it is to reduce power consumption or improve service life, it is inseparable from friction and wear.

[0004] The existing floating ring bearing includes a sleeve, a floating ring and a journal. The sleeve is directly installed in the bearing housing, and the journal is used to connect with the shaft. The sleeve, the floating ring and the journal are arranged at intervals. The existing sleeve, floating ring and journal are all standard circular ring structures. When this structure works actually, the lubricating oil will accumulate on both outer sides under the action of centrifugal force, making the central area gradually oil-poor, showing a distribution state where there is more lubricating oil at both ends of the bearing and relatively less lubricating oil in the central area, making the lubrication of the floating ring bearing uneven and prone to adhesive wear. Summary of the Utility Model

[0005] The technical problem to be solved by the utility model is that the existing floating ring bearing causes the lubricating oil to accumulate on both outer sides of the bearing under the action of centrifugal force during operation, resulting in poor lubrication effect of the bearing.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a dynamic balance lubricating floating ring bearing, including a journal and a floating ring. The inner wall of the floating ring is an inwardly concave arc-shaped structure. The journal is arranged in the floating ring and is spaced from the floating ring.

[0007] Wherein, the floating ring of the above structure is a thin-walled olive-shaped structure.

[0008] Further, the outer wall of the journal in the above structure is an arc-shaped structure, and the outer wall of the journal is adapted to the inner wall shape of the floating ring.

[0009] Wherein, the floating ring of the above structure includes a left floating ring and a right floating ring, and the left floating ring and the right floating ring are clamped and fixed, and the clamping point is located in the middle of the floating ring.

[0010] Furthermore, in the above structure, an annular clamping block is provided at one end of the left floating ring, an annular clamping groove is provided at one end of the right floating ring, and the clamping block and the clamping groove are interference fit.

[0011] Among them, the above structure also includes a sleeve, the wall thickness at both ends of the sleeve is greater than the wall thickness in the middle of the sleeve, and the wall thickness at both ends of the sleeve decreases successively toward the middle of the sleeve, the sleeve is arranged outside the floating ring, and the outer wall of the floating ring is spaced apart from the inner wall of the sleeve.

[0012] Furthermore, in the above structure, the shaft sleeve comprises a left shaft sleeve and a right shaft sleeve, and the left shaft sleeve and the right shaft sleeve are fixed by clamping, and the clamping point is located in the middle of the shaft sleeve.

[0013] Furthermore, in the above structure, an annular connecting block is provided at one end of the left sleeve, an annular connecting groove is provided at one end of the right sleeve, and the connecting block is interference fit with the connecting groove.

[0014] The beneficial effects of the utility model are:

[0015] 1. In this structure, the spacing surface between the floating ring and the bearing is the first sliding mating surface, and the spacing surface between the floating ring and the sleeve is the second sliding mating surface. When the bearing is working, the lubricating liquid in the first sliding mating surface and the second sliding mating surface will be affected by the centrifugal force and the lubricating oil will accumulate on both sides. By designing the first sliding mating surface and / or the second sliding mating surface as a concave structure, the lubricating oil can be gathered toward the center, avoiding the phenomenon of lack of lubricating oil in the central area or certain areas, enhancing the lubrication effect and reducing wear.

[0016] 2. When the bearing of this structure is working, the bearing is loaded, and the setting of the inner concave structure can squeeze the lubricating oil, causing it to flow to both sides, which will produce a pressure layer. This pressure layer is the common oil film, which promotes complete lubrication on both sides of the floating ring, so that the lubricating oil fills the contact surface gap, which can fully reduce the loss caused by wear and tear and increase the service life of the machinery.

[0017] 3. With this structural arrangement, during the operation of the bearing, the lubricating oil is in a state of dynamic balance lubrication. The so-called dynamic balance lubrication means that during the operation of the floating ring bearing, by adjusting the distribution and flow of the lubricating oil, the rotating components can maintain balance during operation, thereby reducing vibration and wear. Through the design of the concave structure, the lubricating oil on both sides always circulates towards the annular part in the middle of the bearing, ensuring that the lubricating oil can be supplied in a timely manner where it is needed, forming an effective lubricating film, and further achieving the effect of dynamic balance lubrication, so that the floating ring bearing is always in a good lubricating state during operation. This reduces the vibration and wear of mechanical equipment, thereby improving the service life and working efficiency of the equipment. Brief Description of the Drawings

[0018] Figure 1 It is a schematic cross-sectional structure diagram of the present utility model.

[0019] Figure 2 It is a schematic structure diagram of the figure of the present utility model.

[0020] Figure 3 It is an exploded view of the structure of the present utility model.

[0021] The markings in the figure are: 1. Journal; 2. Floating ring; 21. Left floating ring; 211. Clamping block; 22. Right floating ring; 221. Card slot; 3. Sleeve; 31. Left sleeve; 311. Connecting block; 32. Right sleeve; 321. Connecting groove. Detailed Description of the Preferred Embodiments

[0022] The present utility model will be further described below with reference to the accompanying drawings.

[0023] As Figures 1 to 3 shown, a dynamic balance lubrication type floating ring bearing of the present utility model includes a journal 1 and a floating ring 2. The inner wall of the floating ring 2 is a concave arc-shaped structure. The journal 1 is inserted into the floating ring 2 and is spaced apart from the floating ring 2. Those skilled in the art can understand that since the journal 1 is directly connected to the rotating shaft, the lubrication between the journal 1 and the floating ring 2 is particularly important, and it is necessary to ensure that there is always lubricating oil in the gap between them. Therefore, in this structure, it is preferably that the inner wall of the floating ring 2 is a concave arc-shaped structure, so that the entire floating ring 2 is a tubular structure with a large middle and small ends. The journal 1 is inserted into the floating ring 2 and is spaced apart from the floating ring 2. The arc-shaped inner wall of the floating ring 2 can make the lubricating oil located between the floating ring 2 and the journal 1 directly contact the inclined inner wall of the floating ring 2 under the action of centrifugal force. Under the combined action of the reaction force of the inclined inner wall and the centrifugal force, the lubricating oil can be gathered towards the center. As shown by the arrow flow direction in the accompanying drawings, it is the flow direction of the lubricating oil during operation, avoiding the phenomenon of lack of lubricating oil in the central area or some areas, enhancing the lubrication effect, and reducing wear.

[0024] Preferably, the floating ring 2 in the above structure is a thin-walled olive-shaped structure. Those skilled in the art can understand that in order to ensure that the gap between the outer wall of the floating ring 2 and the bushing 3 is also a concave arc surface, this structure preferably uses a thin-walled olive-shaped structure for the floating ring 2, that is, the floating ring 2 is a hollow structure with a large middle and small ends. An axle journal 1 is arranged inside the floating ring 2, and a bushing 3 is sleeved outside. The inner wall of the floating ring 2 and the outer wall of the axle journal 1 form a first sliding fit surface, and the outer wall of the floating ring 2 and the inner wall of the bushing 3 form a second sliding fit surface. Both the first sliding fit surface and the second sliding fit surface are also concave arc surface structures, ensuring that the lubricating oil always gathers towards the middle.

[0025] Preferably, the outer wall of the axle journal 1 in the above structure is an arc-shaped structure, and the outer wall of the axle journal 1 is adapted to the inner wall of the floating ring 2. Those skilled in the art can understand that the axle journal 1 of this structure is an integral structure. In order to be adapted to the inner wall of the floating ring 2, the outer wall of the axle journal 1 also adopts a concave structure with a high middle and low sides, ensuring the stability of the entire bearing during operation.

[0026] Preferably, the floating ring 2 in the above structure includes a left floating ring 21 and a right floating ring 22. The left floating ring 21 and the right floating ring 22 are fixedly connected by clamping, and the clamping position is located in the middle of the floating ring 2. Those skilled in the art can understand that considering the processing technology of the floating ring 2 and facilitating assembly, with the middle of the bearing as the demarcation line, the floating ring 2 is divided into a left floating ring 21 and a right floating ring 22. The floating ring 2 is assembled by an interference fit of the left floating ring 21 and the right floating ring 22.

[0027] Preferably, one end of the left floating ring 21 in the above structure is provided with an annular clamping block 211, one end of the right floating ring 22 is provided with an annular clamping groove 221, and the clamping block 211 and the clamping groove 221 are in interference fit. Those skilled in the art can understand that in order to facilitate the interference fit assembly of the left floating ring 21 and the right floating ring 22, this structure preferably provides an annular clamping block 211 at one end of the left floating ring 21, and at the same time provides an annular clamping groove 221 at one end of the right floating ring 22, so that the interference fit of the clamping block 211 and the clamping groove 221 can complete the assembly of the floating ring 2.

[0028] Preferably, the above structure further includes a bushing 3. The wall thickness at both ends of the bushing 3 is greater than the wall thickness in the middle of the bushing 3, and the wall thickness at both ends of the bushing 3 decreases successively towards the middle of the bushing 3. The bushing 3 is sleeved outside the floating ring 2, and a gap is provided between the outer wall of the floating ring 2 and the inner wall of the bushing 3. Those skilled in the art can understand that the inner wall of the floating ring 2 and the outer wall of the journal 1 form a first sliding fit surface, and the outer wall of the floating ring 2 and the inner wall of the bushing 3 form a second sliding fit surface; and the inner and outer walls of the floating ring 2, the inner wall of the bushing 3, and the outer wall of the journal 1 adopt an inward concave structure with a higher middle and lower sides. The setting of this structure enables the lubricating oil on both sides to always circulate towards the annular part in the middle of the bearing during the operation of the bearing, so that the lubricating oil is in a state of dynamic balance lubrication during the operation of the bearing, ensuring that the lubricating oil can be supplied in time where it is needed, forming an effective lubricating film, avoiding the accumulation of lubricating oil on both sides during the operation of the bearing, and ensuring its good lubrication effect.

[0029] Preferably, in the above structure, the bushing 3 includes a left bushing 31 and a right bushing 32. The left bushing 31 and the right bushing 32 are fixedly connected by clamping, and the clamping position is located in the middle of the bushing 3. Those skilled in the art can understand that considering the processing technology of the bushing 3 and facilitating assembly, the bushing 3 is divided into a left bushing 31 and a right bushing 32 with the middle of the bearing as the dividing line. The bushing 3 is assembled by an interference fit of the left bushing 31 and the right bushing 32. And since the bushing 3 is integrally installed in the bearing housing, the bearing housing will keep the structure of the bushing 3 intact.

[0030] Preferably, in the above structure, an annular connecting block 311 is provided at one end of the left bushing 31, an annular connecting groove 321 is provided at one end of the right bushing 32, and the connecting block 311 and the connecting groove 321 are in interference fit. Those skilled in the art can understand that in this structure, an annular connecting block 311 is preferably provided at one end of the left bushing 31, and an annular connecting groove 321 is provided at one end of the right bushing 32. In fact, the connecting block 311 and the connecting groove 321 are in interference fit to realize the assembly of the bushing 3.

Claims

1. A dynamic balance lubrication type floating ring bearing, comprising a journal (1) and a floating ring (2), characterized in that: The inner wall of the floating ring (2) is a concave arc-shaped structure. The journal (1) is inserted into the floating ring (2) and is spaced from the floating ring (2).

2. The dynamic balance lubrication type floating ring bearing according to claim 1, wherein: The floating ring (2) is a thin-walled olive-shaped structure.

3. The dynamic balance lubricating floating ring bearing according to claim 2, characterized in that: The outer wall of the journal (1) is an arc-shaped structure, and the outer wall of the journal (1) is adapted to the shape of the inner wall of the floating ring (2).

4. A dynamic balance lubrication type floating ring bearing according to any one of claims 1 to 3, characterized in that: The floating ring (2) includes a left floating ring (21) and a right floating ring (22). The left floating ring (21) and the right floating ring (22) are fixedly connected by clamping, and the clamping position is located in the middle of the floating ring (2).

5. The dynamic balance lubrication type floating ring bearing according to claim 4, characterized in that: One end of the left floating ring (21) is provided with an annular clamping block (211), one end of the right floating ring (22) is provided with an annular clamping groove (221), and the clamping block (211) is in interference fit with the clamping groove (221).

6. The dynamic balance lubrication type floating ring bearing according to claim 1, characterized in that: It further includes a bushing (3). The wall thickness at both ends of the bushing (3) is greater than the wall thickness in the middle of the bushing (3), and the wall thickness at both ends of the bushing (3) gradually decreases towards the middle of the bushing (3). The bushing (3) is sleeved outside the floating ring (2), and the outer side wall of the floating ring (2) is spaced from the inner wall of the bushing (3).

7. The dynamic balance lubricating floating ring bearing according to claim 6, characterized in that: The bushing (3) includes a left bushing (31) and a right bushing (32). The left bushing (31) and the right bushing (32) are fixedly connected by clamping, and the clamping position is located in the middle of the bushing (3).

8. The dynamic balance lubrication type floating ring bearing according to claim 7, wherein: One end of the left bushing (31) is provided with an annular connecting block (311), one end of the right bushing (32) is provided with an annular connecting groove (321), and the connecting block (311) is in interference fit with the connecting groove (321).

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