CN207514075U - A kind of tensioning bearing - Google Patents

Abstract

A kind of tensioning bearing, belongs to technical field of bearings, including the first inner ring, the second inner ring, ball, retainer, outer ring, tensioning block and bolt；There are two first inner ring, the second inner ring, ball, retainer are equal, and axially and symmetrically it is set to outer ring both sides；First inner ring, the concentric setting of the second inner ring and outer ring；Second inner ring is sheathed on outside the first inner ring, and the first inner ring, the second inner ring gap setting form interior shoe cream room；Tensioning block is mounted on the outside of first inner ring；The tensioning block is in hollow round table-like；Flare openings are both provided with, and the first inner ring inner wall and tensioning block outer wall fit on the outside of first inner ring；The tensioning block includes the upper tensioning half block being mutually inserted and lower tensioning half block.Two pieces of first inner rings of tensioning block sandwiched so as to which this bearing to be fixedly installed in the shaft of different-diameter, play the role of tensioning.

Description

A kind of tensioning bearing

Technical field

The utility model belongs to technical field of bearings, and in particular to is a kind of tensioning bearing.

Background technology

In the equipment such as conveyer, bearing is extremely important component, and the normal operation of machine is required for sprocket wheel to drive.

Due to requiring higher and higher, the requirement to the mechanical performance of bearing to the conveying capacity of the equipment such as conveyer now It is higher and higher.

Tensioning bearing is the bearing of existing frequently-used adaptation high-strength working, is generally passed through by interior tensioning tailing axle with tail wheel Bearing block is fixed and is formed, but the stress that such structure makes bearing generate in the running can be very big, moreover, such connection More loosely, vibrations during operating are also larger.

Utility model content

The purpose of the utility model is to overcome it is mentioned above the defects of and deficiency, and provide a kind of tensioning bearing.

A kind of tensioning bearing, including the first inner ring, the second inner ring, ball, retainer, outer ring, tensioning block and bolt；It is described There are two first inner ring, the second inner ring, ball, retainer are equal, and axially and symmetrically it is set to outer ring both sides；First inner ring, The concentric setting of second inner ring and outer ring；Second inner ring is sheathed on outside the first inner ring, and between the first inner ring, the second inner ring Gap sets to form interior shoe cream room；The outer ring is sheathed on outside the second inner ring, and is provided with ball between outer ring and the second inner ring And retainer；The ball is embedded at retainer；The outer wall of second inner ring and the inner wall of outer ring are both provided with raceway；It is described Tensioning block is mounted on the outside of first inner ring；The tensioning block is in hollow round table-like；It is both provided on the outside of first inner ring Flare openings, and the first inner ring inner wall and tensioning block outer wall fit；The tensioning block includes the upper tensioning being mutually inserted half Block and lower tensioning half block；The upper tensioning half block is provided at both ends with flange；The lower tensioning half block both ends offer and flange phase The locating slot of adaptation；The flange is inserted in locating slot；Bolt is equipped between two pieces of tensioning blocks；Screw bolt passes tensioning block It is fixed afterwards with nut.

The first inner ring both sides are both provided with the cricoid first lug of diameter convex, and first lug cross section is L-shape, The second inner ring both sides are arranged in first lug；Corral sets out interior shoe cream room in first inner ring, first lug and second.

First inner ring offers the first oil filler point.

The retainer includes the retaining ring being wholely set and holding rod；The retaining ring is in hollow ring-type；The guarantor The equidistant axial arranging of bar is held in retaining ring side, the gap of adjacent holding rod is less than the diameter of ball；Before and after the holding rod Both sides setting is fluted；The radius of circular arc where the groove is equal or slightly larger than ball bearing radius.

The holding rod inboard width is less than outside width；The cross section of the holding rod is in inverted isosceles trapezoid.

A kind of tensioning bearing is further included in circular spacer ferrule；The inner wall of the holding rod free end is provided with positioning Slot；The spacer ferrule is embedded at locating slot；The spacer ferrule internal diameter is not less than holding rod internal diameter.

The spacer ferrule is enclosed by the iron plate winding two of strip.

Two pieces of first inner rings of tensioning block sandwiched so as to which this bearing to be fixedly installed in the shaft of different-diameter, play tensioning Effect.The interior shoe cream room of this bearing stores lubricating oil, plays the role of flexible carrying.When this bearing is acted on by radial direction During power, hydraulic energy flexible support so as to mitigate the accidental loads of radial direction, reduces the abrasion of bearing, extends the service life of bearing.

Description of the drawings

Fig. 1 is the structure diagram of the utility model；

Fig. 2 is the structure diagram of tensioning block；

Fig. 3 is to maintain the structure diagram of frame；

In figure：First inner ring 1, the first oil filler point 1b, interior shoe cream room 2, the second inner ring 3, ball 4, is kept first lug 1a Frame 5, retaining ring 5a, holding rod 5b, locating slot 5c, spacer ferrule 5d, groove 5e, raceway 6, outer ring 7, tensioning block 8, upper tensioning half block 8a, flange 8b, lower tensioning half block bc, locating slot 8d, bolt 9.

Specific embodiment

Below in conjunction with the accompanying drawings, this patent is described in further detail.

A kind of tensioning bearing, including the first inner ring 1, the second inner ring 3, ball 4, retainer 5 and outer ring 7；In described first There are two the 1, second inner ring 3 of circle, ball 4, retainer 5 are equal, and axially and symmetrically it is set to 7 both sides of outer ring；First inner ring 1, The 7 concentric setting of second inner ring 3 and outer ring；Second inner ring 3 is sheathed on outside the first inner ring 1, and the first inner ring 1, second 3 gap setting of inner ring forms interior shoe cream room 2；The outer ring 7 is sheathed on outside the second inner ring 3, and 7 and second inner ring 3 of outer ring it Between be provided with ball 4 and retainer 5；The ball 4 is embedded at retainer 5；The outer wall of second inner ring 3 and outer ring 7 it is interior Wall is both provided with raceway 6.

Interior shoe cream room 2 stores lubricating oil, plays the role of flexible carrying.When active force of this bearing by radial direction, Hydraulic energy flexible support so as to mitigate the accidental loads of radial direction, reduces the abrasion of bearing, extends the service life of bearing.

First inner ring, 1 outside is mounted on tensioning block 8；The tensioning block 8 is in hollow round table-like；In described first 1 outside of circle is both provided with flare openings, and 1 inner wall of the first inner ring and 8 outer wall of tensioning block fit；The tensioning block 8 includes The upper tensioning half block 8a and lower tensioning half block bc being mutually inserted；The upper tensioning half block 8a is provided at both ends with flange 8b；Under described Tensioning half block bc both ends offer the locating slot 8d being adapted with flange 8b；The flange 8b is inserted in locating slot 8d；Two pieces Bolt 9 is equipped between tight block 8；Bolt 9 is fixed after sequentially passing through tensioning block 8 with nut.

Two pieces of 8 first inner rings of sandwiched 1 of tensioning block, so as to which this bearing to be fixedly installed in the shaft of different-diameter.Pass through tune Whole flange 8b is inserted in the depth of locating slot 8d, to adjust the internal diameter of tensioning block 8, to adapt to the shaft of different-diameter.

First inner ring, 1 both sides are both provided with the cricoid first lug 1a of diameter convex, first lug 1a cross sections L-shape, 3 both sides of the second inner ring are arranged in first lug 1a；First inner ring 1, first lug 1a and the second inner ring 3 enclose Set out interior shoe cream room 2.

First lug 1a plays the role of connecting the first inner ring 1 and the second inner ring 3.Second inner ring 3 can be relative in first Circle 1 does the local displacement of radial direction, plays the role of buffering and fine tuning.

First inner ring 1 offers the first oil filler point 1b.Hydraulic oil enters the first oiling by the first oil filler point 1b Hole 1b.

The retainer 5 includes the retaining ring 5a, the holding rod 5b that are wholely set and in circular spacer ferrule 5d.

The retaining ring 5a is in hollow ring-type；The equidistant axial arrangings of holding rod 5b are in retaining ring 5a sides, phase The gap of adjacent holding rod 5b is less than the diameter of ball 4；The holding rod 5b front and rear sides set fluted 5e；The groove 5e institutes The radius of circular arc be equal or slightly larger than 4 radius of ball.

The holding rod 5b inboard widths are less than outside width；The cross section of the holding rod 5b is in inverted isosceles ladder Shape provides the holding power of larger radial direction for retainer 5.

The inner wall of the holding rod 5b free ends is provided with locating slot 5c；The spacer ferrule 5d is embedded at locating slot 5c；Institute Spacer ferrule 5d internal diameters are stated not less than holding rod 5b internal diameters.The spacer ferrule 5d is enclosed by the iron plate winding two of strip.Positioning The setting of 5d is bound round, on the one hand prevents ball 4 from unexpectedly jumping out, on the other hand, plays the role of opening holding rod 5b, is holding rod The free end of 5b provides holding power, meanwhile, it ensure that the free end of all holding rod 5b is substantially on same circumference.

The structure of retaining ring 5a is respectively provided with relative to holding rod 5b both ends, this retainer can save material and cost, reduce The weight of bearing, while be conducive to the assembling of ball 4 and retainer 5.

The utility model is illustrated according to embodiment, and under the premise of present principles are not departed from, the present apparatus can also be made Go out several modifications and improvements.It should be pointed out that all technical solutions obtained using modes such as equivalent substitution or equivalent transformations, are fallen It is within the protection scope of the present utility model.

Claims (7)

1. a kind of tensioning bearing, which is characterized in that including the first inner ring（1）, the second inner ring（3）, ball（4）, retainer（5）、 Outer ring（7）, tensioning block（8）And bolt（9）；First inner ring（1）, the second inner ring（3）, ball（4）, retainer（5）Have Two, and axially and symmetrically it is set to outer ring（7）Both sides；First inner ring（1）, the second inner ring（3）And outer ring（7）It is concentric to set It puts；Second inner ring（3）It is sheathed on the first inner ring（1）Outside, and the first inner ring（1）, the second inner ring（3）Gap setting is formed Interior shoe cream room（2）；The outer ring（7）It is sheathed on the second inner ring（3）Outside, and outer ring（7）With the second inner ring（3）Between be provided with Ball（4）And retainer（5）；The ball（4）It is embedded at retainer（5）；Second inner ring（3）Outer wall and outer ring（7） Inner wall be both provided with raceway（6）；First inner ring（1）Outside is mounted on tensioning block（8）；The tensioning block（8）In being in Empty is round table-like；First inner ring（1）Outside is both provided with flare openings, and the first inner ring（1）Inner wall and tensioning block（8） Outer wall fits；The tensioning block（8）Including the upper tensioning half block being mutually inserted（8a）With lower tensioning half block（bc）；Described upper Tight half block（8a）It is provided at both ends with flange（8b）；The lower tensioning half block（bc）Both ends offer and flange（8b）Adaptable determines Position slot（8d）；The flange（8b）It is inserted in locating slot（8d）；Two pieces of tensioning blocks（8）Between be equipped with bolt（9）；Bolt（9） Sequentially pass through tensioning block（8）It is fixed afterwards with nut.

A kind of 2. tensioning bearing as described in claim 1, which is characterized in that first inner ring（1）Both sides are both provided with diameter The cricoid first lug of convex（1a）, first lug（1a）Cross section is L-shape, second inner ring（3）Both sides are arranged in First lug（1a）；First inner ring（1）, first lug（1a）With the second inner ring（3）It encloses and sets out interior shoe cream room（2）.

A kind of 3. tensioning bearing as described in claim 1, which is characterized in that first inner ring（1）Offer the first oiling Hole（1b）.

A kind of 4. tensioning bearing as described in claim 1, which is characterized in that the retainer（5）Including the guarantor being wholely set Held in ring（5a）And holding rod（5b）；The retaining ring（5a）In hollow ring-type；The holding rod（5b）Equidistant axial arranging In retaining ring（5a）Side, adjacent holding rod（5b）Gap be less than ball（4）Diameter；The holding rod（5b）Front and rear sides It sets fluted（5e）；The groove（5e）The radius of the circular arc at place is equal or slightly larger than ball（4）Radius.

A kind of 5. tensioning bearing as claimed in claim 4, which is characterized in that the holding rod（5b）Inboard width is less than outer Side width；The holding rod（5b）Cross section be in inverted isosceles trapezoid.

6. a kind of tensioning bearing as claimed in claim 4, which is characterized in that further include in circular spacer ferrule（5d）；Institute State holding rod（5b）The inner wall of free end is provided with locating slot（5c）；The spacer ferrule（5d）It is embedded at locating slot（5c）；It is described Spacer ferrule（5d）Internal diameter is not less than holding rod（5b）Internal diameter.

A kind of 7. tensioning bearing as claimed in claim 6, which is characterized in that the spacer ferrule（5d）It is rolled up by the iron plate of strip It is enclosed around two.