Self-circulation lubrication type floating ring bearing

Abstract

The utility model discloses a self-circulation lubrication type floating ring bearing, and belongs to the technical field of bearings. The structure comprises a shaft neck (6), a floating ring and a shaft sleeve (4) which are arranged at intervals in the radial direction, the floating ring is of an hourglass-shaped structure with the small middle and the two large ends, and the outer wall of the shaft neck (6) and the inner wall of the shaft sleeve (4) are of a frustum-shaped structure and matched with the outer wall of the floating ring; and a plurality of through oil holes (5) are formed in the middle of the floating ring at intervals. The through oil holes (5) of the structure can increase flowing of lubricating oil, and the lubricating effect is prevented from being affected by accumulation of the lubricating oil. The matching surfaces between the floating ring and the shaft neck (6) and between the floating ring and the shaft sleeve (4) are of a conical structure, and the component force in the radial direction can be counteracted in opposite directions at the two ends after the floating ring is loaded; therefore, the radial bearing capacity of the floating ring bearing is improved. The problems that when an existing floating ring bearing works, the calorific value is large, the surface metallographic structure of the bearing is changed due to temperature rise, the abrasion resistance is weakened, and abrasion is accelerated are solved.

Description

TECHNICAL FIELD

[0001] The utility model discloses a self -circulation lubrication formula floating ring bearing belongs to bearing technical field. BACKGROUND

[0002] With the continuous advancement of industrial modernization process, the demand for high-power, high-speed mechanical equipment is increasing, and the working environment is becoming more and more complex. As a key component of mechanical equipment, the performance requirements of bearings are also getting higher and higher. Sliding bearing has been widely used in various mechanical equipment. The research on sliding bearing mainly focuses on two aspects. On the one hand, new bearing materials are developed to adapt to complex working characteristics and harsh working environment. On the other hand, the bearing structure is improved, and the optimization design of the structure is realized through the analysis of dynamics, tribology and lubrication mechanism. Floating sleeve bearing is a new structure of sliding bearing which improves the structure of sliding bearing. Floating ring bearing has the following advantages: high running stability, high rotation accuracy at high speed, compact structure, easy adjustment, low friction power consumption, easy temperature rise control, long service life than ordinary sliding bearing, suitable for high-speed, high-load operation, etc. Therefore, floating ring bearing has great research significance.

[0003] With the continuous accumulation of abrasive dust in the lubricating grease under the long-time work of the bearing, the wear of the geometric shape and size of the bearing matching surface reaches a certain degree, the pressure distribution between the matching surfaces will deteriorate, the local pressure and temperature will rise sharply, and local scratches and gluing will occur. The more abrasive dust, the more serious the abrasive wear, the worse the shape and quality of the friction surface, the larger the friction coefficient, and the further reduced lubricating performance of the lubricating grease. The existing floating ring bearing includes a shaft sleeve, a floating ring and a shaft neck, the shaft sleeve is directly installed in the bearing seat, and the shaft neck is used for connecting with the shaft, the shaft sleeve, the floating ring and the shaft neck are spaced apart, and the existing shaft sleeve, the floating ring and the shaft neck are all standard ring structures. When the floating ring bearing works, the heat generation increases under high speed, the temperature rises quickly, the change of the metallographic structure of the bearing surface causes the weakening of the wear resistance, and the wear speed of the bearing is accelerated. CONTENT OF THE UTILITY MODEL

[0004] The utility model solves the technical problem that the existing floating ring bearing generates a large amount of heat when working, the temperature rises, the metallographic structure of the bearing surface changes, the wear resistance is weakened, and the wear is accelerated.

[0005] The utility model adopts the technical scheme in the technical problem: a self-circulation lubrication formula floating ring bearing, including the shaft neck, the floating ring and the shaft sleeve that are arranged at intervals along the radial direction, the floating ring is the hourglass structure of small in the middle and big at both ends, and the outer wall of the shaft neck and the inner wall of the shaft sleeve are conical frustum structure and are matched with the outer wall of the floating ring, a plurality of through oil holes are arranged at intervals in the middle of the floating ring.

[0006] The floating ring comprises a left floating ring and a right floating ring arranged in mirror symmetry, and the left floating ring and the right floating ring are detachably connected.

[0007] The left floating ring and the right floating ring are spaced apart and provided with connecting through holes, and the left floating ring and the right floating ring are connected into an integral whole by the assembly screw.

[0008] Further, the number of the assembly screws is even and uniformly spaced apart and arranged in left-right symmetry.

[0009] The oil baffle is further provided, and the oil baffle is in a groove-shaped structure, and the groove side is sleeved on both sides of the floating ring.

[0010] Further, the oil baffle is made of rubber or other non-metallic materials.

[0011] Further, the left floating ring and the right floating ring are provided with adaptive assembly positioning structures on the connecting end faces.

[0012] Further, the bearing seat is further provided, and the bearing seat is in a split structure and is sleeved outside the shaft sleeve, and the inner wall is in close contact with the oil baffle through the connecting screw.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The floating ring and the shaft neck spacing surface are the first sliding fit surface, and the spacing surface between the floating ring and the shaft sleeve is the second sliding fit surface, and the lubricating liquid in the first sliding fit surface and the second sliding fit surface flows to both sides due to the taper structure of the contact surface gap when the bearing works, and the lubricating oil in the first sliding fit surface or the second sliding fit surface flows to the center, and when the bearing rotates by one circle, a cycle is performed; the middle oil hole is arranged, and when the bearing rotates to a position with poor flow effect, the lubricating oil can flow out from the oil hole, the flow effect of the lubricating oil is improved, the structure prevents the lubricating oil from accumulating in a certain position, the lubrication effect is enhanced, the wear is reduced, the bearing is always in a good lubrication state, the loss caused by wear can be reduced, and the service life of the machine is improved.

[0015] 2. The taper structure of the shaft neck and the shaft sleeve side wall is arranged, so that when the bearing is loaded, the radial component force of the bearing is in opposite directions at both ends and is offset; thereby the radial bearing capacity of the floating ring bearing is greatly improved, and the adaptability of the floating ring bearing under heavy load working conditions is improved.

[0016] 3、The structure can not only enhance the lubricating effect, but also increase the bearing heat dissipation capacity through the circulating flow of lubricating oil, reduce the temperature of the bearing in the working process, avoid the temperature rising of the bearing, the change of the metallographic structure of the bearing surface due to the temperature rising, the weakening of the wear resistance, thereby prolonging the service life and enhancing the adaptability to high speed working condition. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a sectional view of the utility model;

[0018] Figure 2 is the utility model Figure 1 is an enlarged schematic view of structure A;

[0019] Figure 3 is the utility model whole lifting structure diagram;

[0020] Figure 4 is the utility model floating ring structure schematic diagram;

[0021] Figure 5 is the utility model explosion diagram.

[0022] Reference signs: 1, left floating ring; 2, bearing seat; 3, oil retaining ring; 4, shaft sleeve; 5, through oil hole; 6, journal; 7, assembly screw rod; 8, right floating ring; 9, connecting screw rod; 10, assembly positioning structure. DETAILED DESCRIPTION

[0023] The utility model is further explained in connection with the drawings.

[0024] As Figures 1 to 5As shown, the self-circulation lubrication type floating ring bearing comprises a shaft neck 6, a floating ring and a shaft sleeve 4 which are arranged at intervals in the radial direction, the floating ring is in the shape of a sandglass with small middle and large two ends, the outer wall of the shaft neck 6 and the inner wall of the shaft sleeve 4 are in the shape of a truncated cone and are matched with the outer wall of the floating ring, and a plurality of through oil holes 5 are arranged at intervals in the middle of the floating ring. Those skilled in the art can understand that the interval surface between the floating ring and the bearing in the structure is a first sliding fit surface, the interval surface between the floating ring and the shaft sleeve 4 is a second sliding fit surface, and the lubricating liquid in the first and second sliding fit surfaces flows to the two sides and the center when the bearing works, and a cycle is completed when the bearing rotates one circle. A plurality of through oil holes 5 are arranged at intervals in the middle of the floating ring, so that the lubricating oil can flow out from the oil holes when the bearing is in a position where the flow effect is poor, the flow effect of the lubricating oil is improved, the lubricating effect is enhanced, the wear is reduced, the bearing is always in a good lubricating state, the loss caused by wear is reduced, and the service life of the machine is improved. Meanwhile, the tapered structure of the side walls of the shaft neck 6 and the shaft sleeve 4 makes the radial component forces of the bearing in opposite directions at the two ends when the bearing is under load, so as to offset each other, thereby greatly improving the radial bearing capacity of the floating ring bearing and increasing the adaptability of the floating ring bearing under heavy load conditions.

[0025] Preferably, the floating ring in the above structure comprises a left floating ring 1 and a right floating ring 8 arranged in mirror symmetry, and the left floating ring 1 and the right floating ring 8 are detachably connected. Those skilled in the art can understand that the floating ring in the structure is preferably a split structure for easy installation, specifically comprising a left floating ring 1 and a right floating ring 8 arranged in mirror symmetry, and the left floating ring 1 and the right floating ring 8 are detachably connected, that is, the small ends of the left floating ring 1 and the right floating ring 8 are detachably connected.

[0026] Preferably, the above structure further comprises an assembly screw 7, the left floating ring 1 and the right floating ring 8 are provided with connecting through holes at intervals, and the left floating ring 1 and the right floating ring 8 are connected into one body by the assembly screw 7. Those skilled in the art can understand that the connection mode of the left floating ring 1 and the right floating ring 8 in the structure is that the left floating ring 1 and the right floating ring 8 are provided with connecting through holes at intervals, and the left floating ring 1 and the right floating ring 8 are connected into one body by the assembly screw 7.

[0027] Preferably, the number of assembly screws 7 in the structure is even and evenly spaced and symmetrically arranged on the left and right. Those skilled in the art can understand that the structure recommends symmetrically arranging the assembly screws 7 when connecting the floating ring, and the number of assembly screws 7 is usually even, and the appropriate setting method can be selected according to different working environments.

[0028] Preferably, the structure further includes an oil retaining ring 3, which is a groove-shaped structure, and the groove side is sleeved on both sides of the floating ring. Those skilled in the art can understand that in order to form a complete lubrication circuit, the structure further includes an oil retaining ring 3, preferably the oil retaining ring 3 is a groove-shaped structure, and the groove side is sleeved on both sides of the floating ring, and the groove is in communication with the first sliding fit surface and the second sliding fit surface.

[0029] Preferably, the oil retaining ring 3 in the structure is made of rubber or other non-metallic materials. Those skilled in the art can understand that the oil retaining ring 3 is preferably made of rubber or other non-metallic materials, such as rubber or polytetrafluoroethylene and other high molecular materials, etc., and at the time of installation, appropriate pre-tightening force is required, and under bearing load, it can be tightly attached to both ends of the bearing, ensuring the sealing of the lubricating oil.

[0030] Preferably, the left floating ring 1 and the right floating ring 8 are connected to the end face and are provided with adaptive assembly positioning structure 10. Those skilled in the art can understand that in engineering, in order to facilitate assembly, assembly positioning structure 10 is provided on both sides of the left floating ring 1 and the right floating ring 8, and the assembly positioning structure 10 is a combination of existing positioning pins and positioning holes.

[0031] Preferably, the structure further includes a bearing seat 2, which is a split structure, and is sleeved outside the shaft sleeve 4, and the inner wall is tightly attached to the oil retaining ring 3 through the connecting screw 9. Those skilled in the art can understand that the bearing seat 2 is outside the bearing, and the bearing seat 2 is a split structure, and is sleeved outside the shaft sleeve 4 through the connecting screw 9, and the oil ring 3 is installed and fixed in the bearing seat 2, and is distributed on both sides of the bearing, forming a sealing device.

Claims

1. A self-circulating lubricated floating ring bearing comprising a journal (6), a floating ring and a bushing (4) arranged at a radial distance, characterized in that: The floating ring is in the shape of a sandglass with small middle and large ends, and the outer wall of the shaft neck (6) and the inner wall of the shaft sleeve (4) are in the shape of a truncated cone and are matched with the outer wall of the floating ring; a plurality of through oil holes (5) are arranged at intervals in the middle of the floating ring.

2. A self-lubricating floating ring bearing according to claim 1, characterized in that: The floating ring comprises a left floating ring (1) and a right floating ring (8) arranged in mirror symmetry, and the left floating ring (1) and the right floating ring (8) are detachably connected.

3. A self-lubricating floating ring bearing according to claim 2, wherein: Further comprising an assembly screw rod (7), the left floating ring (1) and the right floating ring (8) are arranged at intervals and have connecting through holes, and the left floating ring (1) and the right floating ring (8) are connected into one body by the assembly screw rod (7).

4. A self-lubricating floating ring bearing according to claim 3, wherein: The number of the assembly screw rod (7) is even and the assembly screw rod (7) is arranged at intervals and symmetrically left and right.

5. A self-lubricating floating ring bearing as in claim 1, wherein: Further comprising an oil retaining ring (3), the cross section of the oil retaining ring (3) is in the shape of a groove, and the groove side is sleeved on both sides of the floating ring.

6. A self-lubricating floating ring bearing according to claim 5, wherein: The oil retaining ring (3) is made of rubber or other non-metallic materials.

7. A self-lubricating floating ring bearing according to claim 2, wherein: The left floating ring (1) and the right floating ring (8) are arranged at intervals on the connecting end faces and have matched assembly positioning structures (10).

8. A self-lubricating floating ring bearing according to claim 5, wherein: Further comprising a bearing seat (2), the bearing seat (2) is in a split structure, is sleeved on the outside of the shaft sleeve (4), and the inner wall is in close contact with the oil retaining ring (3) through a connecting screw rod (9).

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