CN218266804U - Double-row crossed cylindrical roller turntable bearing - Google Patents

Abstract

The application relates to a double cross cylindrical roller slewing bearing, include: the bearing body, both sides terminal surface is equipped with last seal assembly and lower seal assembly who is used for the sealed bearing body respectively about the bearing body, the bearing body includes the outer lane, first inner circle and second inner circle, the second inner circle is located between outer lane and the first inner circle, the terminal surface that first inner circle and second inner circle correspond is equipped with first outer raceway and first inner raceway respectively, be provided with the outer raceway of second and the inner raceway of second on the terminal surface that the second inner circle corresponds with the outer lane, be equipped with a plurality of first rolling elements between first inner raceway and the first outer raceway, be equipped with a plurality of second rolling elements between the outer raceway of second and the second, first rolling element and second rolling element are cylindrical roller. This application simple structure has double cylindrical roller, can use under great load operating mode.

Description

Double-row crossed cylindrical roller turntable bearing

Technical Field

The utility model relates to a carousel bearing technical field, in particular to double cross cylindrical roller carousel bearing.

Background

The turntable bearing is a bearing capable of simultaneously bearing axial force, radial force and overturning moment, and is a single-row crossed cylindrical roller turntable bearing as shown in figure 1.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model provides a double cross cylindrical roller turntable bearing, simple structure, convenient operation has double cylindrical roller, can use under great load operating mode.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: a double row crossed cylindrical roller slewing bearing comprising: the bearing body, both sides terminal surface is equipped with last seal assembly and lower seal assembly who is used for the sealed bearing body respectively about the bearing body, and the bearing body includes outer lane, first inner circle and second inner circle, the second inner circle is located between outer lane and the first inner circle, and the terminal surface that first inner circle and second inner circle correspond is equipped with first outer raceway and first interior raceway respectively, be provided with the outer raceway of second and the interior raceway of second on the terminal surface that second inner circle and outer lane correspond, be equipped with a plurality of first rolling elements between first interior raceway and the first outer raceway, be equipped with a plurality of second rolling elements between the outer raceway of second and the second.

Further, the first rolling body and the second rolling body are both cylindrical rollers.

Furthermore, a first filling hole used for assembling the first rolling body is radially formed in the first inner ring, a first plug is arranged in the first filling hole and fixed through a first fixing pin, a second filling hole used for assembling the second rolling body is radially formed in the outer ring, a second plug is arranged in the second filling hole, and the second plug is fixed through a second fixing pin.

Further, the first fixing pin and the second fixing pin are taper pins.

Furthermore, an outer ring mounting hole is formed in the outer ring, a first inner ring mounting hole is formed in the first inner ring, and a second inner ring mounting hole is formed in the second inner ring.

Further, go up seal assembly and include interior V-arrangement sealing washer and last outer V-arrangement sealing washer, be equipped with outer seal ring groove and last inner seal ring groove on the outer periphery of second inner circle and on the inner circle peripheral surface respectively, go up interior V-arrangement sealing washer one end and install in last inner seal ring groove, the other end and the contact of first inner circle up end, go up outer V-arrangement sealing washer one end and install in last outer seal ring groove, the other end and outer lane up end contact.

Further, lower seal assembly is including interior V-arrangement sealing washer and outer V-arrangement sealing washer down, be equipped with down the inner seal annular on the inner peripheral surface of outer lane, be equipped with down outer seal annular on the outer periphery of first inner circle, interior V-arrangement sealing washer one end is installed in interior seal annular down, and the other end is terminal surface contact under with the second inner circle, outer V-arrangement sealing washer one end is installed in outer seal annular down, and the other end is terminal surface contact under with the second inner circle down.

The beneficial effect of this application does: 1. this application is equipped with a plurality of first rolling elements through being equipped with between first interior raceway and the first outer raceway, is equipped with a plurality of second rolling elements between raceway and the second outer raceway in the second to form double cylindrical roller, can use under great load operating mode, compare single-row cross cylindrical roller slewing bearing's bearing capacity nearly 1 times greatly.

2. Through setting up seal assembly and lower seal assembly, improved the leakproofness of bearing, prolonged the life of bearing, through the setting of second inner circle for the holistic radial load bearing capacity of bearing has obtained improving, thereby has prolonged the life of bearing.

Drawings

Fig. 1 is a schematic structural view of a single row crossed cylindrical roller turntable bearing in the prior art.

FIG. 2 is a schematic view of the present invention;

fig. 3 is a partial structural schematic diagram of fig. 2.

The mark in the figure is: 1. the sealing device comprises an outer ring, 101, an outer ring mounting hole, 2, a second plug, 3, a second fixing pin, 4, a second rolling body, 5, a second inner ring, 501, a second inner ring mounting hole, 6, an upper inner V-shaped sealing ring, 7, a first inner ring, 701, a first inner ring mounting hole, 8, a first fixing pin, 9, a first rolling body, 10, a first plug, 11, a lower outer V-shaped seal, 12, an upper outer V-shaped sealing ring, 13 and a lower inner V-shaped sealing ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that in the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 2-3, the present invention provides a double-row crossed cylindrical roller turntable bearing, comprising: the bearing comprises a bearing body, both sides terminal surface is equipped with last seal assembly and lower seal assembly who is used for the sealed bearing body respectively about the bearing body, and the bearing body includes outer lane 1, first inner circle 7 and second inner circle 5, second inner circle 5 is located between outer lane 1 and the first inner circle 7, and the up end of outer lane 1 is parallel and level with the up end of first inner circle 7, and the up end of second inner circle 5 is higher than the up end of outer lane 1, and the terminal surface that first inner circle 7 corresponds with second inner circle 5 is equipped with first outer raceway and first inner raceway respectively, be provided with second outer raceway and second inner raceway on the terminal surface that second inner circle 5 and outer lane 1 correspond, be equipped with a plurality of first rolling elements 9 between first inner raceway and the first outer raceway, be equipped with a plurality of second rolling elements 4 between second inner raceway and the second outer raceway, first rolling element 9 and second rolling element 4 are the cylindrical roller.

As shown in fig. 2 and 3, a first filling hole for assembling the first rolling element 9 is radially formed in the first inner ring 7, a first plug 10 is arranged in the first filling hole, the first plug 10 is fixed by a first fixing pin 8, a second filling hole for assembling the second rolling element 4 is radially formed in the outer ring 1, a second plug 2 is arranged in the second filling hole, the second plug 2 is fixed by a second fixing pin 3, and the first fixing pin 8 and the second fixing pin 3 are both conical pins.

Specifically, as shown in fig. 2, an outer ring mounting hole 101 is formed in the outer ring 1, the outer ring mounting holes 101 are multiple, the outer ring mounting holes 101 are circumferentially and uniformly distributed on the outer ring 1, the outer ring mounting hole 101 is used for mounting the outer ring 1, a first inner ring mounting hole 701 is formed in the first inner ring 7, the first inner ring mounting holes 701 are multiple, the first inner ring mounting holes 701 are circumferentially and uniformly distributed on the first inner ring 701, the first inner ring mounting hole 701 is used for mounting the first inner ring 7, a second inner ring mounting hole 501 is formed in the second inner ring 5, the second inner ring mounting holes 501 are multiple, the second inner ring mounting holes 501 are circumferentially and uniformly distributed on the second inner ring 5, and the second inner ring mounting hole 501 is used for mounting the second inner ring 5.

More specifically, the upper sealing component comprises an upper inner V-shaped sealing ring 6 and an upper outer V-shaped sealing ring 12, the upper inner V-shaped sealing ring 6 and the upper outer V-shaped sealing ring 12 are both in a ring shape, the inner diameter of the upper outer V-shaped sealing ring 12 is larger than the outer diameter of the upper inner V-shaped sealing ring 6, an upper outer sealing ring groove and an upper inner sealing ring groove are respectively arranged on the outer circumferential surface and the inner circumferential surface of the second inner ring 5,

go up outer seal annular and go up the setting of inner seal annular near 5 upper ends of second inner circles, go up 6 one end of interior V-arrangement sealing washer and install in last inner seal annular, the other end and the first inner circle 7 up end in close contact with, go up 12 one ends of outer V-arrangement sealing washer and install in last outer seal annular, the other end and 1 up end in close contact with in outer lane.

In addition, lower seal assembly includes interior V-arrangement sealing washer 13 and outer V-arrangement sealing washer 11 down, and interior V-arrangement sealing washer 13 all is cyclic annular with outer V-arrangement sealing washer 11 down, and the internal diameter of interior V-arrangement sealing washer 13 is greater than the external diameter of outer V-arrangement sealing washer 11 down, be equipped with down the interior sealed annular on the inner peripheral surface of outer lane 1, lower interior sealed annular is close to outer ring 1 lower extreme setting down, is equipped with down outer sealed annular on the outer periphery of first inner circle 7, and lower outer sealed annular is close to first inner circle 7 lower extreme setting, interior V-arrangement sealing washer 13 one end is installed in interior sealed annular down, and the other end closely contacts with terminal surface under the second inner circle 5, outer V-arrangement sealing washer 11 one end is installed in outer sealed annular down, and the other end closely contacts with terminal surface under the second inner circle 5, through setting up interior V-arrangement sealing washer 6, last outer V-arrangement sealing washer 12, lower interior V-arrangement sealing washer 13 and outer V-arrangement sealing washer 11 down, has improved the leakproofness of bearing, has prolonged the life of bearing.

This application is through setting up outer lane 1, first inner circle 7, second inner circle 5, through the setting of second inner circle 5, make the holistic radial load bearing capacity of bearing obtain improving, thereby the life of bearing has been prolonged, and be equipped with a plurality of first roll 9 bodies and a plurality of second rolling element 4, thereby form double cylindrical roller, can use under great load operating mode, compare single-row cross cylindrical roller slewing bearing's bearing capacity nearly 1 times greatly.

It should be noted that the above embodiments are only used to illustrate the present invention, but the present invention is not limited to the above embodiments, and any simple modification, equivalent change and modification made to the above embodiments by the technical essence of the present invention all fall into the protection scope of the present invention.

Claims (7)

1. A double-row crossed cylindrical roller turntable bearing, comprising: the bearing body, both sides terminal surface is equipped with last seal assembly and lower seal assembly who is used for the sealed bearing body respectively about the bearing body, and the bearing body includes outer lane (1), first inner circle (7) and second inner circle (5), second inner circle (5) are located between outer lane (1) and first inner circle (7), and the terminal surface that first inner circle (7) and second inner circle (5) correspond is equipped with first outer raceway and first interior raceway respectively, be provided with outer raceway of second and second interior raceway on second inner circle (5) and the terminal surface that outer lane (1) correspond, be equipped with a plurality of first rolling elements (9) between first interior raceway and the first outer raceway, be equipped with a plurality of second rolling elements (4) between outer raceway of second and second in the second.

2. The double row crossed cylindrical roller slewing bearing of claim 1, wherein: the first rolling body (9) and the second rolling body (4) are both cylindrical rollers.

3. The double row crossed cylindrical roller slewing bearing of claim 1, wherein: the first inner ring (7) is radially provided with a first filling hole for assembling a first rolling body (9), a first plug (10) is arranged in the first filling hole, the first plug (10) is fixed through a first fixing pin (8), the outer ring (1) is radially provided with a second filling hole for assembling a second rolling body (4), a second plug (2) is arranged in the second filling hole, and the second plug (2) is fixed through a second fixing pin (3).

4. The double row cross cylindrical roller slewing bearing of claim 3, wherein: the first fixing pin (8) and the second fixing pin (3) are taper pins.

5. The double row crossed cylindrical roller slewing bearing of claim 1, wherein: the inner ring structure is characterized in that an outer ring mounting hole (101) is formed in the outer ring (1), a first inner ring mounting hole (701) is formed in the first inner ring (7), and a second inner ring mounting hole (501) is formed in the second inner ring (5).

6. The double row crossed cylindrical roller slewing bearing of claim 1, wherein: go up seal assembly including last interior V-arrangement sealing washer (6) and last outer V-arrangement sealing washer (12), be equipped with outer seal annular and last inner seal annular on the outer periphery of second inner circle (5) and on the interior circumferential surface respectively, go up interior V-arrangement sealing washer (6) one end and install in last inner seal annular, the other end and first inner circle (7) up end contact, go up outer V-arrangement sealing washer (12) one end and install in last outer seal annular, the other end and outer lane (1) up end contact.

7. The double row cross cylindrical roller slewing bearing of claim 6, wherein: lower seal assembly is including interior V-arrangement sealing washer (13) and lower outer V-arrangement sealing washer (11) down, be equipped with down the inner seal annular on the inner peripheral surface of outer lane (1), be equipped with down outer seal annular on the outer periphery of first inner circle (7), in interior V-arrangement sealing washer (13) one end was installed under in the inner seal annular down, the terminal surface contact under the other end and second inner circle (5), outer V-arrangement sealing washer (11) one end was installed under in the outer seal annular, terminal surface contact under the other end and second inner circle (5).

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