A kind of screw bolt-type outer ring and roll assembly
Technical field
The present invention relates to technical field of bearings, in particular to a kind of screw bolt-type outer ring and roll assembly.
Background technique
Existing screw bolt-type outer ring and roll assembly has the disadvantage that 1, cannot carry axial force;2, in screw rod carrying axle
When to power, the looping pit bottom surface of the left shrinkage pool of the annular end face and idler wheel left end of the shaft shoulder right end of roller shaft is pressed together, spiral shell
Bar generates dry friction when rotating, and frictional force is big, and screw rod rotates sensitivity bottom, influences using effect, after a period of use, idler wheel
The looping pit bottom surface of the left shrinkage pool of the annular end face and idler wheel left end of the shaft shoulder right end of axis is prone to wear, and influences service life;3,
The locking device for preventing attaching nut from loosening is not provided on screw rod, there are security risks.
Summary of the invention
It is an object of the invention to improve the deficiency of prior art, a kind of screw bolt-type outer ring and roll assembly is provided, in addition to protecting
It holds outside the good function of existing screw bolt-type outer ring and roll assembly, moreover it is possible to carry biggish axial force, eliminate safe hidden trouble, both save material
Material, reduction equipment volume reduce cost again.
The present invention is realized by providing following technical scheme.
Manufacture and design a kind of screw bolt-type outer ring and roll assembly, the screw bolt-type outer ring and roll assembly is by idler wheel, needle roller, gear
Circle, roller shaft and oil nozzle composition, the wall surface of the hole of the centre bore of the idler wheel and the needle roller fitted shaft of roller shaft left end integral structure
Precision assembly, uniformly distributed needle roller are equipped between the external diameter surface of neck, the left end of the needle roller engagement journal is equipped with the shaft shoulder, the axis
The right part of shoulder is located in the left shrinkage pool of idler wheel left end, the annular end face of the shaft shoulder right end and the looping pit bottom surface gap of left shrinkage pool
Assembly, the central axis left end of the needle roller engagement journal, which is equipped with, is suitable for the hexagon shrinkage pool that allen wrench is inserted into, and described six
The right end of angular shrinkage pool is equipped with oil nozzle, and the right end of the oil nozzle is equipped with tank filler sleeve A, the tank filler sleeve A be radially provided with and center
The right end of the tank filler sleeve B that hole communicates, the needle roller engagement journal are equipped with annular groove, the baffle wedge of the annular groove and retaining ring
Tightly together, the left part of the retaining ring is located in the right shrinkage pool of idler wheel right end, and the right end of the roller shaft is equipped with screw rod.
Of the invention is mainly characterized by: the left end of the centre bore of idler wheel is equipped with and is used to support on the retainer of thrust ball bearing
The bulge loop of uniformly distributed ball.
The looping pit bottom surface of the left shrinkage pool of the idler wheel left end is equipped with first annular arc groove, first annular circular arc
The concaved circular cambered surface of groove is together with the right side precision assembly of ball uniformly distributed on retainer.
The annular end face of the shaft shoulder right end of the roller shaft is equipped with second ring opposite with first annular arc groove
Shape arc groove, the left side precision assembly of uniformly distributed ball is one on the concaved circular cambered surface and retainer of the second annular arc groove
It rises.
All sizes of the first annular arc groove and the second annular arc groove are identical, and first annular circular arc is recessed
The arc radius of the concaved circular cambered surface of slot and the second annular arc groove is slightly larger than the radius of ball.
The pin hole of the center line perpendicular to screw rod is equipped in the middle part of the length of the screw rod of the roller shaft right end.
The present invention has following distinguishing feature and good effect compared with prior art.
When using the present invention, the pin of two with the center line of screw rod are radially symmetrically drilled out in the middle part of the thickness of attaching nut
The through-hole of hole same apertures, alignment pin holes insertion pin can prevent nut loosening, eliminate safe hidden trouble after nut tightening.
The present invention breaches the design that existing screw bolt-type outer ring and roll assembly can only carry radial force, cannot carry axial force
Manufacturing method rolls thrust ball bearing and screw bolt-type in conjunction with the design principle of thrust ball bearing and screw bolt-type outer ring and roll assembly
Outer ring and roll assembly is combined as a whole, compact-sized, can carry biggish radial force and the biggish axial force of carrying, overcome
Existing screw bolt-type outer ring and roll assembly cannot carry the defect of axial force.
Combine the present invention overcomes tradition using two kinds of bearings of needle bearing and thrust ball bearing carry radial force with
The application method of axial force only with a bearing can carry radial force and axial force, not only saved material, reduction equipment volume but also
Reduce cost.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is a kind of concrete structure schematic diagram of the screw bolt-type outer ring and roll assembly proposed according to the present invention.
In figure: 1- idler wheel, the first annular arc groove of 2-, 3- centre bore, 4- needle roller, the right shrinkage pool of 5-, 6- retaining ring, 7- gear
Plate, 8- roller shaft, 9- screw rod, 10- pin hole, 11- tank filler sleeve B, 12- annular groove, 13- needle roller engagement journal, 14- tank filler sleeve A,
15- oil nozzle, 16- bulge loop, the 17- shaft shoulder, 18- hexagon shrinkage pool, 19- retainer, 20- ball, the annular arc groove of 21- second,
The left shrinkage pool of 22-.
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated.
As shown in the picture, manufacture and design a kind of screw bolt-type outer ring and roll assembly, screw bolt-type outer ring and roll assembly by idler wheel 1,
Needle roller 4, retaining ring 6, roller shaft 8 and oil nozzle 15 form, wall surface of the hole and the 8 left end integral structure of roller shaft of the centre bore 3 of idler wheel 1
Precision assembly, uniformly distributed needle roller 4 are equipped between the external diameter surface of needle roller engagement journal 13, the left end of needle roller engagement journal 13 is equipped with
The shaft shoulder 17, the right part of the shaft shoulder 17 are located in the left shrinkage pool 22 of 1 left end of idler wheel, the annular end face of 17 right end of the shaft shoulder and left shrinkage pool 22
The assembly of looping pit bottom surface gap, the central axis left end of needle roller engagement journal 13 are equipped with the hexagon for being suitable for allen wrench insertion
Shrinkage pool 18, the right end of hexagon shrinkage pool 18 are equipped with oil nozzle 15, and the right end of oil nozzle 15 is equipped with tank filler sleeve A14, the radial direction of tank filler sleeve A14
Equipped with the tank filler sleeve B11 communicated with centre bore 3, the right end of needle roller engagement journal 13 is equipped with annular groove 12, annular groove 12 with
The baffle 7 of retaining ring 6 is snapped together, and the left part of retaining ring 6 is located in the right shrinkage pool 5 of 1 right end of idler wheel, and the right end of roller shaft 8 is equipped with
Screw rod 9.
Embodiment: the left end of the centre bore 3 of idler wheel 1 is equipped with and is used to support rolling uniformly distributed on the retainer 19 of thrust ball bearing
The bulge loop 16 of pearl 20.
The looping pit bottom surface of the left shrinkage pool 22 of 1 left end of idler wheel is equipped with first annular arc groove 2, and first annular circular arc is recessed
The concaved circular cambered surface of slot 2 is together with the right side precision assembly of ball 20 uniformly distributed on retainer 19.
The annular end face of 17 right end of the shaft shoulder of roller shaft 8 is equipped with second annular opposite with first annular arc groove 2
The left side precision of arc groove 21, the concaved circular cambered surface and ball 20 uniformly distributed on retainer 19 of the second annular arc groove 21 fills
With together.
First annular arc groove 2 is identical with all sizes of the second annular arc groove 21, first annular arc groove 2
It is slightly larger than the radius of ball 20 with the arc radius of the concaved circular cambered surface of the second annular arc groove 21.
The pin hole 10 of the center line perpendicular to screw rod 9 is equipped in the middle part of the length of the screw rod 9 of 8 right end of roller shaft.
The course of work of the invention is specifically described with reference to the accompanying drawing.
The course of work (one) of the invention: lifting revolution object: idler wheel is packed into bearing block, bearing block is fixed on branch
On frame, the screw rod for making roller shaft downward, radially symmetrically drills out the center line of two with screw rod in the middle part of the thickness of attaching nut
Pin hole same apertures through-hole, the connector for the object that will be rotated is inserted on the axle journal of screw rod upper end of roller shaft, nut
Screw rear alignment pin holes insertion pin.
The course of work (two) of the invention: support revolution object: idler wheel being packed into the bearing hole of rotating wheel or roller, will
In mounting hole in the axle journal insertion rack of the screw rod left end of roller shaft, radially symmetrically drilled out in the middle part of the thickness of attaching nut
Two with the through-holes of the pin hole same apertures of the center line of screw rod, alignment pin holes are inserted into pin after nut tightening.