CN211599277U - A double-layer cylindrical roller bearing - Google Patents

Abstract

A double-layer cylindrical roller bearing relates to a rolling bearing, wherein an outer ring (2) is sleeved outside a middle ring (8), an inner wall (18) of the outer ring is in contact with a plurality of cylindrical rollers A (7), and a plurality of screws A (3) passes through the plurality of through holes A (21) and then is screwed with the plurality of screw holes A (16) respectively, the middle ring (8) is sleeved outside the inner ring (10), and the inner wall (26) of the middle ring is connected to the multiple holes A (16). The cylindrical rollers B (9) are in contact, and the plurality of screws B (15) pass through the plurality of perforations B (30) and are respectively screwed with the plurality of screw holes B (24). The outer wall of the middle ring and the outer wall of the inner ring are respectively set in the semicircular grooves, and the outer ring and the middle ring are set as a combined structure, so that the distance between the outer ring and the middle ring, the middle ring and the inner ring is shortened as much as possible, and the prevention of the bearing is realized. The purpose of the bearing oil applied on it is that it is easy to be thrown out during high-speed operation.

Description

A double-layer cylindrical roller bearing

technical field

The utility model relates to a rolling bearing, in particular to a double-layer cylindrical roller bearing.

Background technique

Bearing is an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy; double-layer cylindrical roller bearing is a kind of rolling bearing. The cylindrical alloy steel ball is installed in the middle of the middle steel ring and the outer steel ring, the inner steel ring and the middle steel ring. The traditional double-layer cylindrical roller bearing generally separates the cylindrical rollers with a cage, and rolls the cylindrical rollers. Reduce the friction during the power transmission process and improve the transmission efficiency of mechanical power. Due to the limitation of the size of the cage, the interval between the middle ring and the outer ring, the inner ring and the middle ring of the double-layer cylindrical roller bearing is relatively large. The bearing oil smeared on the bearing is easily thrown out during high-speed operation, causing serious mechanical damage to the bearing when the bearing is short of bearing oil and running at high speed, which affects the life of the bearing.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies in the background technology, the utility model discloses a double-layer cylindrical roller bearing. By placing the cylindrical rollers in the semicircular grooves respectively provided on the outer wall of the middle ring and the outer wall of the inner ring, and placing the outer ring and the middle ring It is set as a combined structure, so that the distance between the outer ring and the middle ring, the middle ring and the inner ring is shortened as much as possible, and the purpose of preventing the bearing oil smeared on the bearing from being easily thrown out during high-speed operation is realized.

In order to achieve the purpose of the invention, the utility model adopts the following technical solutions:

A double-layer cylindrical roller bearing includes an outer ring, a middle ring, an inner ring, a retaining ring A and a retaining ring B. A retaining ring A is provided at one end of the inner wall of the outer ring of the outer ring, and a retaining ring A is provided at the other end of the inner wall of the outer ring of the outer ring. The annular half-groove A is provided with a plurality of screw holes A at intervals on the side wall of the annular half-groove A, one end of the retaining ring A is provided with a flanging A, and a plurality of perforations A are arranged on the flanging A at intervals. The middle part of the outer wall of the middle ring of the ring is provided with a plurality of semicircular grooves A at intervals around the center of the middle ring, and a plurality of cylindrical rollers A of the same number as the plurality of semicircular grooves A are respectively partially placed in the plurality of semicircular grooves A. One end of the inner wall of the middle ring is provided with a retaining ring B, the other end of the inner wall of the middle ring is provided with an annular half groove B, and a plurality of screw holes B are arranged on the side wall of the annular half groove B at intervals. One end is provided with a flange B, a plurality of perforations B are arranged on the flange B at intervals, a plurality of semicircular grooves B are arranged in the middle of the outer wall of the inner ring around the axis of the inner ring, and the number of the plurality of semicircular grooves B is The same plurality of cylindrical rollers B are partially placed in the plurality of semicircular grooves B, the outer ring is sleeved outside the middle ring, the retaining ring A is in contact with one end of the plurality of cylindrical rollers A, and the inner wall of the outer ring is in contact with the plurality of cylindrical rollers. The rollers A are in contact, the retaining ring A is inserted into the outer ring along the end of the outer ring with the annular half groove A, one end of the retaining ring A is in contact with the other end parts of the plurality of cylindrical rollers A, and the flange A is placed in the annular half. In the groove A, a plurality of screws A pass through the plurality of holes A and then screw with the plurality of screw holes A respectively, the middle ring is placed outside the inner ring, the retaining ring B is in contact with one end of the plurality of cylindrical rollers B, and the middle ring is in contact with one end of the plurality of cylindrical rollers B. The inner wall is in contact with a plurality of cylindrical rollers B, and the end of the retaining ring B along the middle ring with the annular half groove B is inserted into the middle ring, and one end of the retaining ring B is in contact with the other end parts of the plurality of cylindrical rollers B, turning over. The side B is placed in the annular half-groove B, and the plurality of screws B pass through the plurality of through holes B and then are screwed with the plurality of screw holes B respectively.

In the double-layer cylindrical roller bearing, the outer wall of the outer ring provided on the outer ring is an annular plane structure.

In the double-layer cylindrical roller bearing, a chamfer transition is set between the outer wall of the outer ring and the two end surfaces of the outer ring.

In the double-layer cylindrical roller bearing, the inner wall of the inner ring provided on the inner ring is an annular plane structure.

In the double-layer cylindrical roller bearing, a chamfering transition is set between the inner wall of the inner ring of the inner ring and the two end faces of the inner ring.

In the double-layer cylindrical roller bearing, ring grooves A are respectively provided at both ends of the outer wall of the middle ring of the middle ring, and a circlip A is sleeved in the two ring grooves A respectively. The inner wall of the ring A is in contact, and the outer edge surface of the other retaining ring A is in contact with the inner wall of the retaining ring A. The two retaining rings A are respectively provided with joints.

In the double-layer cylindrical roller bearing, ring grooves B are respectively provided at both ends of the outer wall of the inner ring of the inner ring, and a circlip B is sleeved in the two ring grooves B respectively. The inner walls of the ring B are in contact with each other, the outer edge surface of the other retaining ring B is in contact with the inner wall of the retaining ring B, and the two retaining rings B are respectively provided with joints.

In the double-layer cylindrical roller bearing, a widening neck A is respectively provided at one end of the plurality of through holes A, and the screw heads provided by the plurality of screws A are respectively placed in the plurality of expanding necks A.

In the double-layer cylindrical roller bearing, a widening neck B is respectively provided at one end of the plurality of through holes B, and the screw heads provided by the plurality of screws B are respectively placed in the plurality of expanding necks B.

Owing to adopting the above-mentioned technical scheme, the utility model has the following beneficial effects:

In the double-layer cylindrical roller bearing of the utility model, the cylindrical rollers are placed in the semicircular grooves respectively provided on the outer wall of the middle ring and the outer wall of the inner ring, and the outer ring and the middle ring are arranged as a combined structure, so that the outer ring The distance between the middle ring, the middle ring and the inner ring is shortened as much as possible, and the purpose of preventing the bearing oil smeared on the bearing from being easily thrown out during high-speed operation is realized; the utility model has novel and unique design, strong practicability, energy saving and consumption reduction , has great marketing value.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the structural representation of the outer ring of the utility model;

Fig. 3 is the structural representation of the retaining ring A of the utility model;

Fig. 4 is the three-dimensional structure schematic diagram of the retaining ring A of the utility model;

Fig. 5 is the structural representation of the middle ring of the utility model;

Fig. 6 is the structural representation of the retaining ring B of the utility model;

Fig. 7 is the three-dimensional structure schematic diagram of the retaining ring B of the utility model;

Fig. 8 is the structural representation of the inner ring of the utility model;

FIG. 9 is a schematic structural diagram of the circlip B of the present invention.

In the figure: 1. Outer wall of outer ring; 2. Outer ring; 3. Screw A; 4. Flanging A; 5. Retaining ring A; 6. Circlip A; 7. Cylindrical roller A; 8. Middle ring; 9 , Cylindrical roller B; 10, inner ring; 11, inner wall of inner ring; 12, retaining ring B; 13, retaining ring B; 14, flange B; 15, screw B; 16, screw hole A; 17, annular half Slot A; 18, inner wall of outer ring; 19, retaining ring A; 20, expanding neck A; 21, perforation A; 22, ring groove A; 23, semicircular groove A; 24, screw hole B; ; 26, inner wall of middle ring; 27, retaining ring B; 28, outer wall of middle ring; 29, neck expansion B; 30, perforation B; 31, ring groove B; 32, semicircular groove B; 33, outer wall of inner ring; 34, connector.

Detailed ways

The present utility model can be explained in more detail through the following examples, the present utility model is not limited to the following examples, and the purpose of disclosing the present utility model is to protect all changes and improvements within the scope of the present utility model;

The double-layer cylindrical roller bearing described in conjunction with Figures 1 to 9 includes an outer ring 2, a middle ring 8, an inner ring 10, a retaining ring A5 and a retaining ring B13, and the outer ring outer wall 1 provided on the outer ring 2 is annular Planar structure, a chamfer transition is set between the outer wall 1 of the outer ring 2 and the two end surfaces of the outer ring 2, a retaining ring A19 is provided at one end of the inner wall 18 of the outer ring 2, and the inner wall 18 of the outer ring 2 is another. One end is provided with an annular half groove A17, a plurality of screw holes A16 are provided at intervals on the side wall of the annular half groove A17, one end of the retaining ring A5 is provided with a flange A4, and a plurality of perforations A21 are provided at intervals on the flange A4. , a plurality of semicircular grooves A23 are arranged at intervals around the center of the middle ring 8 in the middle of the outer wall 28 of the middle ring In A23, a retaining ring B27 is arranged at one end of the inner wall 26 of the middle ring of the middle ring 8, an annular half groove B25 is arranged at the other end of the inner wall 26 of the middle ring of the middle ring 8, and a plurality of annular half grooves B25 are arranged at intervals on the side wall of the annular half groove B25. There are two screw holes B24, a flange B14 is provided at one end of the retaining ring B13, and a plurality of through holes B30 are provided at intervals on the flange B14. A chamfering transition is set between the inner wall 11 of the inner ring and the two end faces of the inner ring 10, and a plurality of semicircular grooves B32 and a plurality of semicircular grooves are spaced around the axis of the inner ring 10 in the middle of the outer wall 33 of the inner ring 10. A plurality of cylindrical rollers B9 with the same number of B32 are partially placed in the plurality of semicircular grooves B32, the outer ring 2 is sleeved outside the middle ring 8, the retaining ring A19 is in contact with one end of the plurality of cylindrical rollers A7, and the inner wall of the outer ring 18 is in contact with a plurality of cylindrical rollers A7, the end of the retaining ring A5 provided with the annular half groove A17 along the outer ring 2 is inserted into the outer ring 2, and one end of the retaining ring A5 is in contact with the other end of the plurality of cylindrical rollers A7. , the flange A4 is placed in the annular half-groove A17, a plurality of screws A3 pass through a plurality of through holes A21 and then are screwed with a plurality of screw holes A16 respectively, the middle ring 8 is set outside the inner ring 10, the retaining ring B27 and a plurality of cylindrical One end of the roller B9 is partially in contact, and the inner wall 26 of the middle ring is in contact with a plurality of cylindrical rollers B9. The other end parts of the plurality of cylindrical rollers B9 are in contact, the flanges B14 are placed in the annular half-groove B25, and the plurality of screws B15 pass through the plurality of holes B30 and are respectively screwed with the plurality of screw holes B24. The two ends of the outer wall 28 of the middle ring are respectively provided with ring grooves A22, and circlips A6 are respectively sleeved in the two ring grooves A22. The outer edge surface of one circlip A6 contacts the inner wall of the retaining ring A19, and the other circlip A6 The outer edge surface is in contact with the inner wall of the retaining ring A5, the two retaining rings A6 are respectively provided with joints 34, and the two ends of the inner ring outer wall 33 of the inner ring 10 are respectively provided with ring grooves B31, which are respectively sleeved in the two ring grooves B31. The circlip B12 is connected, the outer edge surface of one circlip B12 is in contact with the inner wall of the retaining ring B27, and the outer edge surface of the other circlip B12 is in contact with the inner wall of the retaining ring B13. 12 are also provided with joints 34, one end of the plurality of through holes A21 are respectively provided with expanding necks A20, the screw heads provided by the plurality of screws A3 are respectively placed in the plurality of expanding necks A20, and one end of the plurality of through holes B30 are respectively provided. A widening neck B29 is provided, and the screw heads provided by the plurality of screws B15 are respectively placed in the plurality of expanding necks B29.

To implement the double-layer cylindrical roller bearing of the present invention, when in use, smear appropriate bearing oil in the semicircular groove B32 provided in the inner ring 10, and then place the same number of cylindrical rollers B9 as the semicircular groove B32. In each semicircular groove B32, put the retaining ring B12 in the two ring grooves B31 respectively, and put the middle ring 8 outside the inner ring 10, so that the retaining ring B27 is in contact with one end of the plurality of cylindrical rollers B9, the middle ring The inner wall 26 is in contact with the plurality of cylindrical rollers B9, the end of the retaining ring B13 provided with the annular half groove B25 along the middle ring 8 is inserted into the middle ring 8, one end of the retaining ring B13 and the other end part of the plurality of cylindrical rollers B9 contact, the flange B14 is placed in the annular half-groove B25, the outer edge surface of one circlip B12 is in contact with the inner wall of the retaining ring B27, and the outer edge surface of the other circlip B12 is in contact with the inner wall of the retaining ring B13. Multiple screws B15 pass through multiple holes B30 and then screw with multiple screw holes B24 respectively; apply appropriate bearing oil in the semicircular groove A23 provided in the middle ring 8, and then install the same number of cylindrical rollers as the semicircular groove A23. A7 is placed in each semicircular groove A23, and the retaining rings A6 are respectively placed in the two ring grooves A22, and the outer ring 2 is placed outside the middle ring 8, so that the retaining ring A19 and one end of the plurality of cylindrical rollers A7 are in contact with each other. Contact, the inner wall 18 of the outer ring is in contact with the plurality of cylindrical rollers A7, insert the end of the retaining ring A5 with the annular half groove A17 along the outer ring 2 into the outer ring 2, one end of the retaining ring A5 and the plurality of cylindrical rollers A7 The other end part of the ring is in contact, the flange A4 is placed in the annular half groove A17, the outer edge surface of one circlip A6 is in contact with the inner wall of the retaining ring A19, and the outer edge surface of the other circlip A6 is in contact with the inner wall of the retaining ring A5. In contact with each other, a plurality of screws A3 are passed through a plurality of through holes A21 and then screwed with a plurality of screw holes A16 respectively, so that the distance between the outer ring 2 and the middle ring 8, the middle ring 8 and the inner ring 10 is shortened as much as possible. The purpose of preventing the bearing oil applied to the bearing from being easily thrown out during high-speed operation.

The part not described in detail in this utility model is the prior art.

Claims (9)

1. A double-layer cylindrical roller bearing, characterized in that it comprises an outer ring (2), a middle ring (8), an inner ring (10), a retaining ring A (5) and a retaining ring B (13), and the outer ring (2) One end of the inner wall (18) of the outer ring is provided with a retaining ring A (19), and the other end of the inner wall (18) of the outer ring of the outer ring (2) is provided with an annular half groove A (17), in the annular half groove A ( 17) The side wall is provided with a plurality of screw holes A (16) at intervals, a flange A (4) is provided at one end of the retaining ring A (5), and a plurality of perforations are provided at intervals on the flange A (4). A (21), a plurality of semicircular grooves A (23) are provided at intervals around the axis of the middle ring (8) in the middle of the middle ring outer wall (28) of the middle ring (8), and the number of the plurality of semicircular grooves A (23) The same plurality of cylindrical rollers A (7) are partially placed in the plurality of semicircular grooves A (23), and a retaining ring B (27) is provided at one end of the inner wall (26) of the middle ring of the middle ring (8). The other end of the inner wall (26) of the middle ring of the ring (8) is provided with an annular half groove B (25), and a plurality of screw holes B (24) are spaced on the side wall of the annular half groove B (25). One end of B (13) is provided with a flange B (14), and a plurality of perforations B (30) are provided at intervals on the flange B (14), and the inner ring outer wall (33) of the inner ring (10) is surrounded by the middle of the inner ring. The shaft center of the ring (10) is provided with a plurality of semicircular grooves B (32) at intervals, and a plurality of cylindrical rollers B (9) with the same number as the plurality of semicircular grooves B (32) are respectively partially placed in the plurality of semicircular grooves B ( 32) The inner and outer rings (2) are sleeved on the outside of the middle ring (8), the retaining ring A (19) is in contact with one end of the plurality of cylindrical rollers A (7), and the inner wall (18) of the outer ring is in contact with the plurality of cylindrical rollers (18). The rollers A (7) are in contact, the retaining ring A (5) is inserted into the outer ring (2) along the end of the outer ring (2) with the annular half groove A (17), and one end of the retaining ring A (5) is connected to the outer ring (2). The other end parts of the cylindrical rollers A(7) are in contact, the flange A(4) is placed in the annular half-groove A(17), and the screws A(3) pass through the through-holes A(21). It is screwed with a plurality of screw holes A (16), the middle ring (8) is placed outside the inner ring (10), the retaining ring B (27) is in contact with one end of the plurality of cylindrical rollers B (9), the middle ring The inner wall (26) is in contact with a plurality of cylindrical rollers B (9). The retaining ring B (13) is inserted into the middle ring (8) along the end of the middle ring (8) with the annular half groove B (25), and the retaining ring is inserted into the middle ring (8). One end of B (13) is in contact with the other end parts of the plurality of cylindrical rollers B (9), the flange B (14) is placed in the annular half groove B (25), and the plurality of screws B (15) pass through the plurality of Each through hole B (30) is screwed with a plurality of screw holes B (24) respectively. 2 . The double-layer cylindrical roller bearing according to claim 1 , wherein the outer ring outer wall ( 1 ) provided on the outer ring ( 2 ) is an annular plane structure. 3 . 3 . The double-layer cylindrical roller bearing according to claim 2 , wherein a chamfer transition is set between the outer wall ( 1 ) of the outer ring ( 2 ) and the two end faces of the outer ring ( 2 ). 4 . 4 . The double-layer cylindrical roller bearing according to claim 1 , wherein the inner ring inner wall ( 11 ) provided on the inner ring ( 10 ) is an annular plane structure. 5 . 5 . The double-layer cylindrical roller bearing according to claim 4 , wherein a chamfer transition is set between the inner wall ( 11 ) of the inner ring ( 10 ) and the two end faces of the inner ring ( 10 ). 6 . 6. The double-layer cylindrical roller bearing according to claim 1, characterized in that: ring grooves A (22) are respectively provided at both ends of the outer wall (28) of the middle ring of the middle ring (8). (22) Circlips A(6) are respectively sleeved inside, the outer edge surface of one circlip A(6) is in contact with the inner wall of the retaining ring A(19), and the outer edge surface of the other circlip A(6) In contact with the inner wall of the retaining ring A (5), joints (34) are respectively provided on the two retaining rings A (6). 7. The double-layer cylindrical roller bearing according to claim 1, characterized in that: ring grooves B (31) are respectively provided at both ends of the inner ring outer wall (33) of the inner ring (10). (31) are respectively sleeved with circlip B (12), the outer edge surface of one circlip B (12) is in contact with the inner wall of the retaining ring B (27), and the outer edge surface of the other circlip B (12) In contact with the inner wall of the retaining ring B (13), joints (34) are respectively provided on the two retaining rings B (12). 8 . The double-layer cylindrical roller bearing according to claim 1 , characterized in that: expanding necks A ( 20 ) are respectively provided at one end of the plurality of through holes A ( 21 ), and the plurality of screws A ( 3 ) are provided with The screw heads are respectively placed in the plurality of expanding necks A (20). 9 . The double-layer cylindrical roller bearing according to claim 1 , characterized in that: expanding necks B ( 29 ) are respectively provided at one end of the plurality of through holes B ( 30 ), and the plurality of screws B ( 15 ) are provided with The screw heads are respectively placed in the plurality of expanding necks B (29).

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