Bearing grease injector
Technical field
The present invention relates to bearing grease injector.
Background technique
The greasing head that is generally the grease filler of stuffing box bearing injection lubricating grease is several cylindrical holes that distribute intermittently on circumference, and this greasing head can not be done very littlely because of the restriction of drill.Plastic cage particularly, because of the gap between the external diameter of the internal diameter of retainer external diameter and bearing outer ring or retainer internal diameter and bearing inner race all very little, lubricating grease often piles up on the end face of retainer after out from grease outlet, can not enter bearing channel, during bearing working, lubricating grease is easy to throw away, and lubricating grease throws away the complete bearing of leakage and will lose efficacy.
Summary of the invention
Technical problem to be solved by this invention provides a kind of bearing grease injector, lubricating grease can be squeezed into bearing channel accurately.For this reason, the present invention by the following technical solutions: it comprises greasing head, grease injection device cover, grease injection device seat; Described grease injection device cover and greasing head are coaxial, the grease injection device cover is enclosed within outside the greasing head, the lower end of described grease injection device cover is connected with the grease injection device seat, described greasing head has can stretch into the positioning head that brearing bore cooperates with its location, described greasing head have with bearing in retainer against the first front end circle, described grease injection device cover has the second front end circle that cooperates with the bearing outer ring inwall, described the first front end circle and the second front end circle gap cooperate, the second front end circle is lower than the first front end circle, gap between the first front end circle and the second front end circle forms annular greasing seam, and described annular greasing seam and greasing head grease outlet communicate.
On the basis of adopting technique scheme, further technological scheme below the present invention also can adopt or make up and adopt:
Described greasing head inside is provided with grease storing chamber, the middle part, side of described greasing head has the first ring connected in star, described grease outlet has a plurality of and evenly is arranged in the first ring connected in star, grease outlet is communicated with described grease storing chamber, the inwall of described grease injection device cover is provided with the second annular groove at the described first ring connected in star of correspondence place, and the seam of described annular greasing seam is wide less than the space width between first ring connected in star and the second annular groove.
Below described first ring connected in star, described greasing head is provided with positioning step, and described grease injection device cover inwall is provided with the step that matches, and the step on the described grease injection device cover inwall and grease injection device seat form the locating slot that cooperates with described positioning step on the greasing head.
The lower end surface of greasing head has and extends inward the filler port that passes to described grease storing chamber, and the grease injection device seat has corresponding through hole.
The inwall of described grease injection device cover and the positioning step outer circumferential face in the greasing head recline.
The inboard of the first front end circle of described greasing head has the limited step that cooperates with the bearing inner race end face.
The outside of the second front end circle of described grease injection device cover has the limited step that cooperates with the bearing outer ring end face.
Owing to adopting technological scheme of the present invention, the present invention adopts a kind of combined mould to form continuous, very thin grease outlet on a kind of circumference, this grease outlet is directly aimed at the gap between retainer external diameter and the bearing outer ring internal diameter, and lubricating grease can precisely be squeezed into bearing channel by this gap.
Description of drawings
Fig. 1 is embodiment's provided by the present invention sectional view.
Fig. 2 is the sectional view of greasing head embodiment illustrated in fig. 1.
Fig. 3 is the sectional view that grease injection device embodiment illustrated in fig. 1 overlaps.
Fig. 4 is the sectional view of grease injection device seat embodiment illustrated in fig. 1.
Embodiment
With reference to accompanying drawing.The present invention includes greasing head 1, grease injection device cover 2, grease injection device seat 3; Described grease injection device cover and greasing head are coaxial, grease injection device cover 2 is enclosed within outside the greasing head 1, lower end and the grease injection device seat 3 of described grease injection device cover 2 are threaded, described greasing head 1 has can stretch into the positioning head 11 that brearing bore 41 cooperates with its location, so that following annular greasing seam 5 gaps that can accurately aim between retainer 42 external diameters and bearing outer ring 43 internal diameters of grease injection device, and can make the first front end circle 12 and seamless joining of retainer 42 end faces of the following stated, can form the reliable passage that a lubricating grease enters bearing channel.Described greasing head 1 have with bearing in retainer 42 against the first front end circle 12, described grease injection device cover 2 has the second front end circle 21 that cooperates with bearing outer ring 43 inwalls, described cooperation makes and refers to that the second front end circle 21 can insert in the bearing outer ring 43, the second front end circle 21 bearing outer ring inwall that preferably reclines as much as possible, described the first front end circle 12 and the second front end circle 21 gaps cooperate, the second front end circle 21 to the first front end circles 12 are low, gap between the first front end circle 12 and the second front end circle 21 forms annular greasing seam 5, adopt the Spielpassung of the first front end circle 12 and the second front end circle 21 can form the very thin fat seam that goes out, described annular greasing seam 5 and greasing head grease outlet 13 communicate.
Described greasing head 1 inside is provided with grease storing chamber 14, the middle part, side of described greasing head 1 has first ring connected in star 15, described grease outlet 13 has a plurality of and evenly is arranged in the first ring connected in star 15, grease outlet 13 is communicated with described grease storing chamber 14, the inwall of described grease injection device cover 2 is provided with the second annular groove 22 at the described first ring connected in star of correspondence 15 places, and the seam of described annular greasing seam 5 is wide less than the space width between first ring connected in star 15 and the second annular groove 22.Like this, can guarantee energy continuous supplying fat when greasing, can improve greasing pressure again simultaneously, improve the greasing effect.
Below described first ring connected in star 15, described greasing head 1 is provided with positioning step 16, described grease injection device overlaps 2 inwalls and is provided with the step 23 that matches, described grease injection device overlaps step 23 on 2 inwalls and grease injection device seat 3 and forms the locating slot 24 that cooperates with described positioning step 16 on the greasing head, makes greasing head 1, grease injection device overlap 2 and the grease injection device seat 3 formation assembly being convenient to mount and dismount.The inwall of described grease injection device cover and the positioning step outer circumferential face in the greasing head recline, and be coaxial to guarantee grease injection device cover and greasing head.
The lower end surface of greasing head 1 has and extends inward the tapped hole 18 that passes to described grease storing chamber 14, and grease injection device seat 3 has corresponding through hole 31, is screwed into lubricating grease delivery pipe 6 in the tapped hole 18.
The inboard of the first front end circle 12 of described greasing head 1 has the limited step 17 that cooperates with bearing inner race 44 end faces.
The outside of the second front end circle 21 of described grease injection device cover 2 has the limited step 24 that cooperates with bearing outer ring 43 end faces.
During greasing, lubricating grease is accurately squeezed into through metering pump rhythmically by lubricating grease delivery pipe 6, lubricating grease enters the gap between retainer external diameter and the bearing outer ring internal diameter through grease storing cavity 14, grease outlet 13, annular greasing seam 5, and enter bearing channel by this gap, thereby reach the purpose of lubricating bearings.Described annular goes out the fat seam and is formed on greasing outlet continuous on the circumference, and its seam is tiny, and greasing amount can accurately be controlled and be even to the bearing channel greasing, and institute goes out lubricating grease can be covered with the inner whole circumference working surface of bearing.
The direction of arrow among the figure is that lubricating grease goes out the fat direction.