Maintenance-free small-section sliding bearing
By attaching a wear-resistant layer to the pressure ring and slidingly connecting it to the outer ring of the split bearing, the problems of large space occupation, wear contamination of grease, and poor sealing effect of rolling bearings are solved, achieving the effect of reduced bearing space and maintenance-free operation.
Patent Information
- Application Number
- CN202422907705.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2034-11-27
AI Technical Summary
The rolling bearings used in existing construction machinery have problems such as large space occupation, wear-induced iron filings contaminating the grease, limited sealing effect, and grease loss.
The maintenance-free small cross-section sliding bearing is adopted. By attaching a wear-resistant layer to the pressure ring and slidingly connecting it with the outer ring of the split ring, the rolling elements are eliminated. The surface contact structure is designed, and an oil reservoir and a sealing ring are set between the pressure ring and the outer ring of the split ring to prevent impurities from entering and grease from being lost.
This reduces the bearing space, increases load-bearing capacity, prevents grease loss and impurity intrusion, and achieves a maintenance-free effect.
Smart Images
Figure CN223894766U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of bearing equipment, especially to a maintenance-free small-section sliding bearing. BACKGROUND
[0002] In the field of engineering machinery, such as truck crane, caterpillar crane, tower crane and other engineering machinery, the bearing currently adopted is a ball type or column type rolling bearing, and the contact mode of the rolling body is point contact or line contact, which determines that the bearing can only bear limited load and occupies a large cross-sectional space due to the existence of the rolling body.
[0003] The iron filings produced by the wear caused by the friction between the rolling body and the raceway can pollute the lubricating grease, and at the same time, the iron filings can also damage the surface state of the rolling body and the raceway, further accelerating the failure of the bearing.
[0004] The engineering machinery of transmission is single-sealed or double-sealed in external structure, and the sealing effect is limited to only block the invasion of large-particle pollutants, and cannot block the invasion of water, small particles and other impurities, and also cannot prevent the lubricating grease inside the bearing from spilling and losing. UTILITARY MODEL
[0005] The utility model provides a maintenance-free small-section sliding bearing in view of the deficiency of prior art, can greatly reduce the axial and radial space, reduces the cross-sectional area, and changes the point contact or line contact of the rolling bearing to the surface contact with stronger bearing capacity, thereby improving the bearing capacity of the bearing; the oil storage groove and the raceway can also be sealed to prevent the invasion of external impurities into the raceway, and the lubricating grease can also be prevented from losing, thereby realizing maintenance-free.
[0006] The technical scheme for solving the above technical problems is as follows:
[0007] A maintenance-free small-section sliding bearing, comprising a pressing ring and a split outer ring, the pressing ring is provided with a raceway, the split outer ring is matched with the raceway, the raceway is provided with a wear-resistant layer, the wear-resistant layer is in sliding connection with the split outer ring, the pressing ring and the split outer ring are provided with an oil storage groove and a sealing ring, and the sealing ring is used for sealing the oil storage groove and the raceway.
[0008] The beneficial effect of the above technical scheme is that a wear-resistant layer is attached to the rolling raceway of the pressure ring through a special process, and the wear-resistant layer and the sliding friction between the split outer ring replace the traditional rolling bearing, the original rolling body is cancelled, the axial and radial space can be greatly reduced, the cross-sectional area is reduced, the point contact or line contact of the rolling bearing is changed to the surface contact with stronger carrying capacity, and the carrying capacity of the bearing is improved; the built-in oil storage groove between the pressure ring and the split outer ring can store lubricating grease, the sealing ring can seal the oil storage groove and the rolling raceway, prevent external impurities from entering the rolling raceway, and prevent the lubricating grease from flowing out, thereby realizing maintenance-free.
[0009] Further, the split outer ring comprises a split ring one and a split ring two, and the split ring one and the split ring two are detachably connected.
[0010] The beneficial effect of the above technical scheme is that the axial size of the joint surface of the split ring one and the split ring two can realize the design and assembly requirements of the rolling raceway without gap or with any gap.
[0011] Further, the rolling raceway comprises an upper rolling raceway and a lower rolling raceway, the upper rolling raceway and the lower rolling raceway are arranged in an upper and lower manner, the upper rolling raceway corresponds to the split ring one, and the lower rolling raceway corresponds to the split ring two.
[0012] Further, the oil storage groove comprises an upper axial oil storage groove and a lower axial oil storage groove, the upper axial oil storage groove is located at the upper part of the upper rolling raceway, and the lower axial oil storage groove is located at the lower part of the lower rolling raceway.
[0013] The beneficial effect of the above technical scheme is that the lubricating grease filled in the upper axial oil storage groove can prevent water and other foreign impurities from entering the rolling raceway.
[0014] Further, the oil storage groove further comprises a radial oil storage groove, and the radial oil storage groove is located at the junction of the upper rolling raceway and the lower rolling raceway.
[0015] Further, the sealing ring comprises an auxiliary sealing ring, the auxiliary sealing ring is located between the pressure ring and the split ring two, a part of the auxiliary sealing ring is embedded in the inner part of the split ring two, and the auxiliary sealing ring is used for auxiliary sealing of the lower axial oil storage groove and the lower rolling raceway.
[0016] The beneficial effect of the above technical scheme is that the built-in auxiliary sealing ring can prevent the lubricating grease from flowing out naturally.
[0017] Further, the sealing ring further comprises an upper sealing ring and a lower sealing ring, one end of the upper sealing ring is connected with the upper part of the pressing ring, the other end is abutted with the split ring one, the upper sealing ring is used for sealing the upper oil storage groove and the upper raceway; one end of the lower sealing ring is connected with the lower part of the split ring two, the other end is abutted with the pressing ring, and the lower sealing ring is used for sealing the lower oil storage groove and the lower raceway.
[0018] The beneficial effects of the above technical scheme are that the external upper sealing ring and lower sealing ring can prevent external impurities from invading the raceway, and further prevent grease loss, and the excess added grease can be discharged from the raceway through the abutted end of the upper sealing ring.
[0019] Further, the upper sealing ring is gradually thinned from the pressing ring to the split ring one, and the lower sealing ring is gradually thinned from the split ring two to the pressing ring.
[0020] The beneficial effects of the above technical scheme are that the upper sealing ring is gradually thinned from the pressing ring to the split ring one, so that the abutted end of the upper sealing ring is deformed under the pressure of the grease, and the excess added grease is discharged from the raceway through the upper sealing ring.
[0021] Further, the auxiliary sealing ring adopts an O-shaped sealing ring, a K-shaped sealing ring, a lip-shaped sealing ring or a skeleton type sealing ring, and the upper sealing ring and the lower sealing ring can also adopt a K-shaped sealing ring, a lip-shaped sealing ring, a skeleton type sealing ring or an embedded sealing ring.
[0022] Further, the wear-resistant layer is made of polyether ether ketone (PEEK), modified PEEK, nylon, copper-based, graphite and other wear-resistant materials. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 It is a sectional view of the utility model.
[0024] Mark 1, the pressing ring; 2, the split outer ring; 21, the split ring one; 22, the split ring two; 3, the raceway; 31, the upper raceway; 32, the lower raceway; 4, the connecting bolt; 5, the wear-resistant layer; 6, the upper axial oil storage groove; 7, the lower axial oil storage groove; 8, the radial oil storage groove; 9, the auxiliary sealing ring; 10, the upper sealing ring; 11, the lower sealing ring; 12, the oil injection hole one; 13, the oil injection hole two. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings Figure 1 The principle and characteristics of the utility model are described, and the examples are only used to explain the utility model, and are not used to limit the scope of the utility model.
[0026] The utility model discloses an embodiment of maintenance -free small section sliding bearing.
[0027] Reference Figure 1 A kind of maintenance -free small section sliding bearing, including pressure ring 1 and split outer ring 2, the pressure ring 1 is equipped with raceway 3, the split outer ring 2 is adapted with raceway 3;A layer of wear layer 5 is attached on the raceway 3 of pressure ring 1 by special process, the wear layer 5 is slidably connected with split outer ring 2, instead of traditional rolling bearing, can greatly reduce axial and radial space, reduce section area, simultaneously by the point contact or line contact of rolling bearing changes into the face contact of stronger carrying capacity, improves the carrying capacity of bearing.The pressure ring 1 and split outer ring 2 between being equipped with oil storage groove and sealing ring, built-in oil storage groove can store lubricating grease, sealing ring is used to seal oil storage groove and raceway 3, to prevent external impurities from invading raceway 3, can prevent lubricating grease from losing simultaneously, to realize maintenance -free.
[0028] The split outer ring 2 includes split ring one 21 and split ring two 22, the split ring one 21 and split ring two 22 are detachably connected by connecting bolt 4.The axial dimension of the joint surface of split ring one 21 and split ring two 22 can be processed, to realize the design and assembly requirement of raceway 3 without gap or arbitrary gap.
[0029] The raceway 3 includes upper raceway 31 and lower raceway 32, the upper raceway 31 and lower raceway 32 are arranged in an upper and lower mode, the upper raceway 31 corresponds to split ring one 21, and the lower raceway 32 corresponds to split ring two 22.A layer of wear layer 5 is attached on the upper raceway 31 and lower raceway 32 of pressure ring 1 by special process, and the wear layer 5 can be made of PEEK, modified PEEK, nylon, copper-based, graphite and other wear-resistant materials.
[0030] The oil storage groove includes axial upper oil storage groove 6 and axial lower oil storage groove 7, the axial upper oil storage groove 6 is located at the upper portion of upper raceway 31 and between pressure ring 1 and split ring one 21.The axial lower oil storage groove 7 is located at the lower portion of lower raceway 32 and between pressure ring 1 and split ring two 22.The oil storage groove further includes radial oil storage groove 8, and the radial oil storage groove 8 is located at the junction of upper raceway 31 and lower raceway 32.
[0031] The pressure ring 1 is internally provided with oil injection hole one 12, and the oil injection hole one 12 is communicated with the upper raceway 31.The split ring one 21 is internally provided with oil injection hole two 13, and the oil injection hole two 13 is communicated with the radial oil storage groove 8.Lubricating grease can be injected into the axial upper oil storage groove 6, the axial lower oil storage groove 7, the radial oil storage groove 8 and the upper raceway 31 and the lower raceway 32 through the oil injection hole one 12 and the oil injection hole two 13.
[0032] The sealing ring comprises an auxiliary sealing ring 9, which is located between the pressing ring 1 and the split ring 2, and a part of the auxiliary sealing ring 9 is embedded in the inside of the split ring 2. The auxiliary sealing ring 9 can be an O-shaped sealing ring, a K-shaped sealing ring, a lip-shaped sealing ring, a skeleton sealing ring, or the like, Figure 1 The auxiliary sealing ring 9 is an O-shaped sealing ring structure as shown in the middle. The auxiliary sealing ring 9 is used for auxiliary sealing of the axial upper oil storage groove 6 and the upper raceway 31, so that the embedded auxiliary sealing ring 9 can prevent the grease from flowing out naturally.
[0033] The sealing ring further comprises an upper sealing ring 10 and a lower sealing ring 11. One end of the upper sealing ring 10 is embedded in the upper part of the pressing ring 1 and is fixedly connected with the pressing ring 1, and the other end abuts against the split ring 1. The upper sealing ring 10 is used for sealing the axial upper oil storage groove 6 and the upper raceway 31. One end of the lower sealing ring 11 is embedded in the lower part of the split ring 2 and is fixedly connected with the split ring 2, and the other end abuts against the pressing ring 1. The lower sealing ring 11 is used for sealing the axial lower oil storage groove 7 and the lower raceway 32. The outer upper sealing ring 10 and the lower sealing ring 11 can prevent external impurities from entering the raceway 3, and can further prevent the grease from flowing out. In addition, the abutting end of the upper sealing ring 10 can be deformed, so that the excess added grease can be discharged from the raceway 3 through the abutting end of the upper sealing ring 10 through the axial upper oil storage groove 6, and the grease filled in the axial upper oil storage groove 6 can prevent water and other foreign impurities from entering the raceway 3.
[0034] The upper sealing ring 10 is gradually thinned from the pressing ring 1 to the split ring 1, so that the abutting end of the upper sealing ring 10 can be deformed under the pressure of the grease, and the excess added grease can be discharged from the raceway 3 through the upper sealing ring 10 through the axial upper oil storage groove 6. The lower sealing ring 11 is gradually thinned from the split ring 2 to the pressing ring 1.
[0035] The upper sealing ring 10 and the lower sealing ring 11 can also be a K-shaped sealing ring, a lip-shaped sealing ring, a skeleton sealing ring, or an embedded sealing ring, etc.
[0036] The implementation principle of the embodiment of the maintenance-free small-section sliding bearing is that: the sliding friction of the wear-resistant layer 5 on the pressure ring 1 and the split outer ring 2 replaces the traditional rolling bearing, the point contact or line contact of the rolling bearing is changed into the surface contact with stronger bearing capacity, and the bearing capacity of the bearing is improved; the built-in radial oil storage groove 8, the axial upper oil storage groove 6 and the axial lower oil storage groove 7 can store the lubricating grease, the built-in auxiliary sealing ring 9 can prevent the lubricating grease from being naturally lost, the external upper sealing ring 10 and the lower sealing ring 11 can prevent the external impurities from invading the raceway 3, and meanwhile, the lubricating grease can be further prevented from being lost, the excess added lubricating grease can be discharged from the raceway 3 through the upper sealing ring 10 through the axial upper oil storage groove 6, and meanwhile, the full lubricating grease in the axial upper oil storage groove 6 can prevent the water and other foreign impurities from invading the raceway 3.
[0037] The above merely describes the preferred embodiments of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A maintenance-free, small-section sliding bearing, characterized in that: It includes a pressure ring (1) and a split outer ring (2). The pressure ring (1) is provided with a raceway (3). The split outer ring (2) is adapted to the raceway (3). The raceway (3) is provided with a wear-resistant layer (5). The wear-resistant layer (5) is slidably connected to the split outer ring (2). An oil reservoir and a sealing ring are provided between the pressure ring (1) and the split outer ring (2). The sealing ring is used to seal the oil reservoir and the raceway (3).
2. The maintenance-free small-section sliding bearing according to claim 1, characterized in that: The outer ring (2) includes a first ring (21) and a second ring (22), which are detachably connected.
3. The maintenance-free small-section sliding bearing according to claim 2, characterized in that: The raceway (3) includes an upper raceway (31) and a lower raceway (32), which are arranged vertically. The upper raceway (31) corresponds to the first split ring (21), and the lower raceway (32) corresponds to the second split ring (22).
4. The maintenance-free small-section sliding bearing according to claim 3, characterized in that: The oil storage tank includes an axial upper oil storage tank (6) and an axial lower oil storage tank (7). The axial upper oil storage tank (6) is located at the upper part of the upper raceway (31), and the axial lower oil storage tank (7) is located at the lower part of the lower raceway (32).
5. A maintenance-free small-section sliding bearing according to claim 4, characterized in that: The oil storage tank also includes a radial oil storage tank (8), which is located at the junction of the upper raceway (31) and the lower raceway (32).
6. The maintenance-free small-section sliding bearing according to claim 4, characterized in that: The sealing ring includes an auxiliary sealing ring (9), which is located between the pressure ring (1) and the split ring two (22). A portion of the auxiliary sealing ring (9) is embedded inside the split ring two (22). The auxiliary sealing ring (9) is used to provide auxiliary sealing for the axially downward oil reservoir (7) and the lower raceway (32).
7. A maintenance-free small-section sliding bearing according to claim 6, characterized in that: The sealing ring also includes an upper sealing ring (10) and a lower sealing ring (11). One end of the upper sealing ring (10) is connected to the upper part of the pressure ring (1), and the other end abuts against the split ring one (21). The upper sealing ring (10) is used to seal the axial upper oil reservoir (6) and the upper raceway (31). One end of the lower sealing ring (11) is connected to the lower part of the split ring two (22), and the other end abuts against the pressure ring (1). The lower sealing ring (11) is used to seal the axial lower oil reservoir (7) and the lower raceway (32).
8. A maintenance-free small-section sliding bearing according to claim 7, characterized in that: The upper sealing ring (10) gradually becomes thinner from the pressure ring (1) to the split ring one (21), and the lower sealing ring (11) gradually becomes thinner from the split ring two (22) to the pressure ring (1).
9. A maintenance-free small-section sliding bearing according to claim 6, characterized in that: The auxiliary sealing ring (9) is an O-ring, K-ring, lip ring or skeleton sealing ring.