The L-type single-row ball type slewing bearing of raceway groove zero air void
Technical field
It the utility model is related to bearing pivoting support construction applications, and in particular to a kind of single ball of L-type of raceway groove zero air void
Formula pivoting support.
Background technology
Conventional bearing pivoting support is usually using single four-point contact ball formula, and the supporting of this four-point contact ball slewing
4 points contact between steel ball and raceway groove, are easier to damage raceway groove, cause revolving support damage failure.
Utility model content
In order to solve the above problems, the utility model proposes a kind of L-type single-row ball type slewing bearing of raceway groove zero air void,
It is ingenious in design, zero air void between pivoting support steel ball and raceway groove, solve raceway groove damage problem well.
A kind of L-type single-row ball type slewing bearing of raceway groove zero air void, it includes outer ring, inner ring, steel ball, institute outer ring, inner ring
Section be L-type, raceway groove is provided between outer ring and inner ring;The steel ball rolls in channels, between steel ball be provided with net type every
From block, the outer ring is connected as a single entity with inner ring by steel ball, outer at the outer ring inner ring face of plane and below inner ring on inner ring
Annular groove is provided with the outer ring lower plane in portion, sealing ring is installed in annular groove;The outer ring side is provided with priming cup, positioned at raceway groove
Outside, both sides are respectively equipped with fixing threaded hole to priming cup up and down, and opposite side is provided with plunger, and plunger at one end is cambered surface, and cambered surface forms rolling
One section of road, the other end are provided with positioning hole, run through outer ring, plunger is by circular hole finger setting on outer ring;The inner ring is provided with
Two fixing threaded holes.
The cross sectional shape of the raceway groove is circular arc, and the diameter of circular arc is identical with the diameter of steel ball.
The priming cup is through type forced filling oil cup.
Further, the scale error being likely to occur in process is avoided, causing the diameter of channels cross-section circular arc may omit
More than steel ball size, from the priming cup to lubricating oil is injected between raceway groove and steel ball, lubricating oil film is formed between raceway groove and steel ball,
Ensure zero air void between steel ball and raceway groove.
The utility model has the advantages that it is ingenious in design, the channel structure of pivoting support is improved, four used in the past point connect
Ball channel structure is touched, is contacted between steel ball and raceway groove for 4 points, steel ball and raceway groove contact surface are small so that structure raceway groove 2-5
Failure easy to wear;The utility model uses the L-type single-row ball type channel structure of raceway groove zero air void, the diameter and steel ball of raceway groove circular arc
Diameter, steel ball contacts with the channel wire way of contact, zero air void between steel ball and raceway groove, increases the contact surface of steel ball and raceway groove
Product so that the wearability of raceway groove is improved, and can bear bigger axial force, radial load and tilting moment, is driven also just
It is more steady, so as to solve the problems, such as that raceway groove fails.
Brief description of the drawings
Fig. 1 is cross section structure schematic diagram of the present utility model.
Fig. 2 is four-point contact ball formula channel structure schematic diagram.
Embodiment
Referring to the drawings 1-2, a kind of L-type single-row ball type slewing bearing of raceway groove zero air void, it includes outer ring 1, inner ring 2, steel
Ball 3, institute outer ring 1, the section of inner ring 2 are L-type, and raceway groove 9 is provided between outer ring 1 and inner ring 2;The steel ball 3 rolls in raceway groove 9
It is dynamic, net type spacing block 5 is provided between steel ball, the outer ring 1 is connected as a single entity with inner ring 2 by steel ball 3, the plane on inner ring 2
Annular groove is provided with the inner ring surface of outer ring 1 and at the lower plane of outer ring 1 of the lower outer of inner ring 2, sealing ring 4 is installed in annular groove;
The side of outer ring 1 is provided with priming cup 6, and positioned at the outside of raceway groove 9, priming cup is respectively equipped with fixing threaded hole, opposite side in both sides about 6
Provided with plunger 7, plunger at one end is cambered surface, 9 one sections of cambered surface constituting channel, and the other end is provided with positioning hole 8, runs through outer ring, plunger
It is positioned at by circular hole pin 10 on outer ring 1;The inner ring 2 is provided with two fixing threaded holes.
The cross sectional shape of the raceway groove 9 is circular arc, and the diameter of circular arc is identical with the diameter of steel ball 3.
The priming cup 6 is through type forced filling oil cup.
Further, the scale error being likely to occur in process is avoided, causing the diameter of the section circular arc of raceway groove 9 may omit
More than the diameter of steel ball 3, lubricating oil is injected between raceway groove 9 and steel ball 3 from the priming cup 6, profit is formed between raceway groove 9 and steel ball 3
Lubricating oil film, ensure zero air void between steel ball 3 and raceway groove 9.
The utility model has the advantages that it is ingenious in design, the channel structure of pivoting support is improved, four used in the past point connect
Ball channel structure is touched, is contacted between steel ball 2-3 and raceway groove 2-5 for 4 points, steel ball 2-3 and raceway groove 2-5 contact surfaces are small so that should
Structure raceway groove 2-5 failures easy to wear;The utility model uses the L-type single-row ball type channel structure of raceway groove zero air void, the circular arc of raceway groove 9
Diameter and steel ball 3 diameter, steel ball 3 contacts with the linear contact lay mode of raceway groove 9, zero air void between steel ball 3 and raceway groove 9, increases
The contact area of steel ball 3 and raceway groove 9 so that the wearability of raceway groove 9 is improved, and can bear bigger axial force, radial direction
Power and tilting moment, transmission is also just more steady, so as to solve the problems, such as that raceway groove fails.