CN204878354U - Double sealing's double reducing ball turntable bearing - Google Patents

Abstract

The utility model provides a double sealing's double reducing ball turntable bearing, includes outer lane, first piece inner circle, second piece inner circle, rolling element, spacing block, sealing strip and inlayer sealing mechanism, is equipped with inside bellied annular boss on the interior disc of outer lane, by the both sides face of annular boss forms two raceways respectively. The utility model discloses an outside of raceway sets up the seal and forms the second floor of double reducing ball turntable bearing sealedly between the second piece inner circle of double reducing ball turntable bearing and outer lane, makes and forms confined space between seal and the sealing strip between second piece inner circle and the outer lane, and the effectual emollient that has prevented leaks and the invasion of dust, aqueous vapor or other filths in the external world in rolling pair the space in, and then has improved the life and the precision of bearing greatly, the utility model has the characteristics of simple structure, low in production cost etc, be fit for promoting on a large scale and using.

Description

A kind of double row reducing ball slewing bearing of double seal

[technical field]

The utility model relates to bearing machining field, especially relates to a kind of double row reducing ball slewing bearing of double seal.

[background technique]

Known, simultaneously double row reducing ball slewing bearing a kind ofly can bear larger axial load, the bearing of radial load and tilting moment, so the supporting of double row reducing ball slewing bearing collection, rotate, transmission and the fixing several functions that waits are in the large size bearing of the special construction of one, usual double row reducing ball slewing bearing self is all with mounting hole, oiling agent and seal arrangement, the different demands of all kinds of main frames worked under different working condition can be met on the one hand, on the other hand, double row reducing ball slewing bearing itself has compact structure, guide and rotate conveniently, simple installation and safeguard the feature such as easy, so double row reducing ball slewing bearing is widely used in handling machinery, digger machinery, constructional engineering machinery, on the huge revolving devices such as harbour machinery and wind-power electricity generation machinery, and normally need at low speed due to double row reducing ball slewing bearing, heavy duty, work under the condition of bad working environments, so introduced contaminants enters one of key factor then having become bearing damage in bearing, what current double row reducing ball slewing bearing adopted is all individual layer sealings, well can not reach sealing effect, easily cause bleeding of lubricant, bearing is made to can not get effectively lubricating, double row reducing ball slewing bearing when rolling because the frictional force in rolling element and raceway contact face increases, wearing and tearing between rolling element and raceway are caused to be accelerated, very easily cause bearing early failue, the double row reducing ball slewing bearing life-span is shortened greatly.

[summary of the invention]

In order to overcome the deficiency in background technique, the utility model discloses a kind of double row reducing ball slewing bearing of double seal, the utility model is by arranging internal layer sealing mechanism double row reducing ball slewing bearing second between inner ring and outer ring, and sealed by the second layer of the seal shape matched bearings in internal layer sealing mechanism, the utility model effectively prevents the oiling agent in rolling pair space to leak and the intrusion of extraneous dust, aqueous vapor or other dirt, and then substantially increases working life and the precision of bearing.

For achieving the above object, the utility model adopts following technological scheme:

A kind of double row reducing ball slewing bearing of double seal, comprise outer ring, first inner ring, second inner ring, rolling element, spacing block, Stamping Steel Ribbon and internal layer sealing mechanism, the inner headed face of outer ring is provided with inwardly protruded annular boss, two raceways are formed respectively by the bi-side of described annular boss, first inner ring and second inner ring is respectively equipped with in the both sides of annular boss, wherein rolling element is separately positioned in annular boss and first inner ring and the Article 1 between annular boss and second inner ring and Article 2 raceway, spacing block is respectively equipped with between every two rolling elements in described every bar raceway, a side end face of one end of outer ring inner headed face and outer ring is respectively equipped with the first layer sealing that Stamping Steel Ribbon forms double row reducing ball slewing bearing, periphery outside first inner ring is provided with annular groove, Stamping Steel Ribbon is provided with in described annular groove, on the periphery of second inner ring raceway outside or on the inner headed face of outer ring the outside of raceway be provided with seal groove, the internal layer sealing mechanism that seal forms double row reducing ball slewing bearing is provided with in described seal groove, and the second layer sealing of double row reducing ball slewing bearing is formed by described internal layer sealing mechanism.

The double row reducing ball slewing bearing of described double seal, described seal is O shape ring or shaft seal or Stamping Steel Ribbon.

The double row reducing ball slewing bearing of described double seal, the inner headed face of described first inner ring is provided with oil hole.

The double row reducing ball slewing bearing of described double seal, the inner headed face of described second inner ring is provided with oil hole.

The double row reducing ball slewing bearing of described double seal, described first inner ring and second inner ring are arranged to one by bolt or welding or riveted joint.

Owing to adopting technological scheme as above, the utility model has following beneficial effect:

The double row reducing ball slewing bearing of a kind of double seal described in the utility model, the utility model is formed by the arranged outside seal of second raceway between inner ring and outer ring at double row reducing ball slewing bearing and seals the second layer of double row reducing ball slewing bearing, make to form seal space between second seal between inner ring and outer ring and Stamping Steel Ribbon, the oiling agent in rolling pair space is effectively prevented to leak and extraneous dust, the intrusion of aqueous vapor or other dirt, and then substantially increase working life and the precision of bearing, it is simple that the utility model has structure, the features such as cost of production is low, suitable for large-scale promotion and application.

[accompanying drawing explanation]

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

In figure: 1, outer ring; 2, first inner ring; 3, second inner ring; 4, rolling element; 5, spacing block; 6, Stamping Steel Ribbon; 7, O shape ring; 8, bolt.

[embodiment]

Can explain the utility model in more detail by the following examples, but the utility model is not limited to the following examples;

The double row reducing ball slewing bearing of a kind of double seal by reference to the accompanying drawings, comprise outer ring 1, first inner ring 2, second inner ring 3, rolling element 4, spacing block 5, Stamping Steel Ribbon 6 and internal layer sealing mechanism, the inner headed face of described first inner ring 2 and second inner ring 3 is respectively equipped with oil hole, the inner headed face of outer ring 1 is provided with inwardly protruded annular boss, two raceways are formed respectively by the bi-side of described annular boss, first inner ring 2 and second inner ring 3 is respectively equipped with in the both sides of annular boss, wherein rolling element 4 is separately positioned in annular boss and first inner ring 2 and the Article 1 between annular boss and second inner ring 3 and Article 2 raceway, spacing block 5 is respectively equipped with between every two rolling elements 4 in described every bar raceway, one end of outer ring 1 inner headed face and a side end face of outer ring 1 are respectively equipped with the first layer sealing that Stamping Steel Ribbon 6 forms double row reducing ball slewing bearing, periphery outside first inner ring 2 is provided with annular groove, Stamping Steel Ribbon 6 is provided with in described annular groove, on the periphery of second inner ring 3 raceway outside or on the inner headed face of outer ring 1 outside of raceway be provided with seal groove, the internal layer sealing mechanism that seal forms double row reducing ball slewing bearing is provided with in described seal groove, described seal is O shape ring 7 or shaft seal or Stamping Steel Ribbon, and the second layer sealing of double row reducing ball slewing bearing is formed by described internal layer sealing mechanism.

The double row reducing ball slewing bearing of described double seal, described first inner ring 2 and second inner ring 3 are arranged to one by bolt 8 or welding or riveted joint.

When implementing the double row reducing ball slewing bearing of a kind of double seal described in the utility model, bi-side and first inner ring 2, second inner ring 3 periphery corresponding position of the annular boss that outer ring 1 inner headed face is arranged are respectively equipped with raceway, rolling element 4 and spacing block 5 are put in raceway, and with spacing block 5 rolling element 4 separated and be installed in outer ring 1, first inner ring 2 and second corresponding raceway of inner ring 3, then fix first inner ring 2 and second inner ring 3 with bolt 8; Inner headed face both sides, outer ring 1 are respectively equipped with twice groove, in order to settle Stamping Steel Ribbon 6; The side of first inner ring 2 periphery is provided with one groove, in order to install Stamping Steel Ribbon 6; The side of second inner ring 3 periphery is provided with one groove equally, in order to install O shape ring 7; Stamping Steel Ribbon 6 in outer ring 1, the end face both sides of first inner ring 2 and second inner ring 3 form first layer sealing, in the inner side of Stamping Steel Ribbon 6, O shape ring 7 is set near the direction of rolling element 4, forms second layer sealing; When bearing dispatches from the factory, fill up lubricating grease in advance in the operation interval that outer ring 1, first inner ring 2, second inner ring 3, Stamping Steel Ribbon 6, O shape ring 7 are formed, for bearing provides good lubricating condition, improve the operating mode of operation interval, effectively extend the working life of bearing; And when bearing working heat-dissipating, the lubricating grease of spilling can be preserved in the chamber of formation between Stamping Steel Ribbon 6 and O shape ring 7, adds the storage space of lubricating grease, extends the effective period of lubrication, and then improves the life-span of bearing.

When bearing working, the Stamping Steel Ribbon 6 of first inner ring 2 and second their both sides of inner ring 3, O shape ring 7 synchronous rotary, the Stamping Steel Ribbon 6 of outer ring 1 and its both sides is synchronously static, and Stamping Steel Ribbon 6 and O shape ring 7 form the cavity of isolation between the operation interval and external environment condition of bearing; The lip of Stamping Steel Ribbon 6 and form a positive air pressure between outer ring 1 and first inner ring 2, this positive air pressure effectively prevents external agency, as metal is cut, entered bearing working interval based on liquid such as the hard dust of carbon silicon, humid air, water; Simultaneously, cavity between rolling element 4 and Stamping Steel Ribbon 6 is divided into two-part by O shape ring 7, when the lubricating grease that Heated Flow strengthens falls within inner ring raceway and external diameter, under the influence of centrifugal force, lubricating grease comes back to operation interval, effectively prevents the leakage of lubricating grease.

The utility model, by the method using O shape ring 7 and traditional Stamping Steel Ribbon 6 to be combined to form double seal, efficiently solves the problem that bearing working interval is isolated from the outside, extends the working life of bearing, be adapted at Production of bearing enterprise and widely popularize.

The non-detailed portion of the utility model is prior art.

The embodiment selected in this article in order to open the purpose of this utility model, currently thinks to be suitable for, but it is to be understood that the utility model is intended to comprise all changes belonging to the embodiment in this design and invention scope and improvement.

Claims (5)

1. the double row reducing ball slewing bearing of a double seal, comprise outer ring (1), first inner ring (2), second inner ring (3), rolling element (4), spacing block (5), Stamping Steel Ribbon (6) and internal layer sealing mechanism, the inner headed face of outer ring (1) is provided with inwardly protruded annular boss, two raceways are formed respectively by the bi-side of described annular boss, first inner ring (2) and second inner ring (3) is respectively equipped with in the both sides of annular boss, wherein rolling element (4) is separately positioned in annular boss and first inner ring (2) and the Article 1 between annular boss and second inner ring (3) and Article 2 raceway, spacing block (5) is respectively equipped with between every two rolling elements (4) in described every bar raceway, a side end face of one end of outer ring (1) inner headed face and outer ring (1) is respectively equipped with the first layer sealing that Stamping Steel Ribbon (6) forms double row reducing ball slewing bearing, it is characterized in that: on the periphery in first inner ring (2) outside, be provided with annular groove, Stamping Steel Ribbon (6) is provided with in described annular groove, on the periphery of second inner ring (3) raceway outside or on the inner headed face of outer ring (1) outside of raceway be provided with seal groove, the internal layer sealing mechanism that seal forms double row reducing ball slewing bearing is provided with in described seal groove, and the second layer sealing of double row reducing ball slewing bearing is formed by described internal layer sealing mechanism.

2. the double row reducing ball slewing bearing of double seal according to claim 1, is characterized in that: described seal is O shape ring (7) or shaft seal or Stamping Steel Ribbon.

3. the double row reducing ball slewing bearing of double seal according to claim 1, is characterized in that: the inner headed face of described first inner ring (2) is provided with oil hole.

4. the double row reducing ball slewing bearing of double seal according to claim 1, is characterized in that: the inner headed face of described second inner ring (3) is provided with oil hole.

5. the double row reducing ball slewing bearing of double seal according to claim 1, is characterized in that: described first inner ring (2) and second inner ring (3) are arranged to one by bolt (8) or welding or riveted joint.