CN201916351U - Thrust cylindrical roller bearing of elastic cylindrical pin connection retainer - Google Patents

Abstract

The utility model relates to the technical field of bearing processing, in particular to a thrust cylindrical roller bearing of an elastic cylindrical pin connection retainer, which is applied to equipment with higher load, like crushers and the like. The thrust cylindrical roller bearing comprises rolling elements, gaskets and a retainer and is characterized in that a row of rolling elements are not in common straight cylinder shapes, and the rolling surfaces of the rolling elements are modified by circular arc modified line generatrices; the retainer is divided into two bodies, comprises a retainer seat and a retainer cover and is connected by an elastic cylindrical pin made of a 65Mn manganese steel material; the axial width of the retainer cover is greater than the thickness of the retainer seat; a non-guide face is parallel and level with the end face of the retainer seat; the retainer cover is guided by the gaskets; the inner diameter of the retainer is guided by an axle; and a plurality of R-shaped lubrication grooves are evenly distributed on the inner diameter of the retainer.

Description

Elastic cylindrical pin connects the cylindrical roller thrust bearing of retainer

Technical field

The utility model patent relates to technical field of bearing processing, concretely, relates to a kind of cylindrical roller thrust bearing that is applied to connect such as the elastic cylindrical pin on the bigger equipment of loads such as disintegrator retainer.

Background technique

Cylindrical roller thrust bearing is a kind of application cod very widely.Cylindrical roller thrust bearing is made of packing ring shape raceway circle (blowout patche, seat ring), cylindrical roller and retainer assembly usually.Cylindrical roller adopts convexity processing, so the stress distribution between roller and the raceway is even.This kind bearing is a separation-type structure, is used in slow-revving occasion, can bear unidirectional thrust load, can not limit radial displacement.The thrust load ability is big, and axial stiffness is also strong.These characteristics make it be very suitable for gyratory crusher.The common structure of our domestic this kind of design bearing is following nothing more than several at present: the split type retainer structure of the first, keep stand and being connected of retainer lid to bear by sunk screw, this kind connection is that least reliable is a kind of, though manufacturer tightens behind the viscose glue, but it is loosening that bearing in use usually causes connecting, cause bearing in use to produce noise, severe patient causes retainer to damage the bearing premature failure.It two is to adopt the split retainer equally, but sunk screw changes straight pin into, thisly must guarantee the interference fit of straight pin and matching hole could effectively guarantee the steady normal operation of bearing in processing.But because the production status of China, simultaneously since straight pin be dimensional accuracy than higher, certainly will require drilling accuracy to adapt simultaneously.Be limited to reasons such as process equipment, the general interference fit that is difficult to guarantee straight pin and retainer is under situation about not guaranteeing, manufacturer is cutter seal pinning straight pin on retainer lid external diameter generally, though straight pin has not fallen like this, connect unsatisfactoryly, and outward appearance is also plain.It three is to adopt the one retainer, and the advantage of this kind retainer is that intensity and rigidity improve, and it is a lot, economical inadequately that shortcoming is that processing cost increases.Process-cycle while is long, the delivery date that often causes not satisfying customer requirement.

Summary of the invention

In view of the defective that prior art exists, the purpose of this utility model provides and a kind ofly saves manufacture cost, shortens the manufacture cycle, reduces assembling difficulty, improves finished product trap rate, prolongs the bearing novel cylindrical roller thrust bearing in working life.

For achieving the above object, the utility model solves by the following technical programs: comprise rolling element, packing ring, retainer, it is characterized in that: a row rolling element is not common right cylindrical, and the rolling surface of rolling element has circular arc modified line bus to repair type; Retainer is divided into two bodies, and by keeping stand and retainer lid to form, the elastic cylindrical pin that the manganese steel material of employing 65Mn is made connects; Retainer lid axial width is thicker than keeping stand, and non-guide surface is concordant with maintenance stand end face, and the retainer lid is by the packing ring guiding, and the retainer internal diameter is guided by axle, is evenly equipped with several R shape lubrication grooves on the retainer internal diameter.

The utility model compared with prior art has following advantage:

1. the utility model bearing adopts the elastic cylindrical pin that the 65Mn material is made, and is used for connecting keeping stand and retainer lid, and this elastic properties of materials and plasticity are all fine, stress equalization in the use, stress distribution is average, has shock-absorbing function simultaneously, can effectively satisfy bearing safe handling requirement.Elastic cylindrical pin has embodied integrity and flexibility in assembly process, and assembly cost is cheap, is a kind of desirable bearing connection part.

2. be evenly equipped with several R shape lubrication grooves on the utility model retainer internal diameter.Because the retainer internal diameter is to be guided by the axle that is mated, this makes bearing retainer internal diameter quick abrasion in use, causes bearing failure fast.On the retainer internal diameter, be shaped on the lubrication groove of R shape appropriate depth, can effectively address this problem, certain lubricant oil of lubrication groove stored or fat in use make between retainer internal diameter and the axle and are distributed with the very thin lubricant film of one deck, directly contact with axle to prevent the retainer internal diameter.Oil film has following effect: can alleviate friction and wearing and tearing, prolong the life-span of bearing, discharge frictional heat, prevent that bearing temperature rise is too high; Prevent the foreign matter intrusion, play the effect of sealing; Prevent corrosion of metal.

3. the utility model bearing support cover is guided by packing ring, for adapting to guiding, the material selection high-quality lead brass (ZCuZn40Pb2) of retainer lid.Be the connectivity robustness of further strengthening keeping stand and lid simultaneously, avoid resilient key, adopt in the design to keep stand to cooperate by a seam with lid in use because accident is born shearing force and premature failure.

4. keep stand and cancelling hole to join brill, tolerance range is moderate, and processing easily can guarantee to cooperate requirement in the assembling.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is the gasket construction schematic representation.

Fig. 3 is the roller structure schematic representation.

Fig. 4 is a retainer stand structure schematic representation.

Fig. 5 is a retainer lid structural representation.

Embodiment

Fig. 1, Fig. 2, Fig. 3, Fig. 4, reference character shown in Figure 5 are as follows: rolling element 1, packing ring 2, keep stand 3, retainer lid 4, retainer 5.

This use novel bearing has two packing rings 2, and 14 rolling elements 1 are housed in the centre of two packing rings 2, and rolling element 1 processes circular arc correction bus and repaiies type at the rolling surface two ends, effectively avoids the stress at rolling element 1 rolling surface two ends to concentrate, and prolongs bearing working life.These 14 rolling elements form retainer 5 assemblies with keeping stand 3 and retainer lid 4 again, can pack in the pocket hole of retainer 5 in order to make rolling element 1, guarantee that again rolling element 1 has very suitable revolution gap in retainer, must guarantee that also rolling element 1 can drop out at no time from retainer 5, rolling element 1 must be packed into keep in the stand 3 after, retainer lid 4 is covered on maintenance stand 3, make retainer lid 4 and keep stand 3 to become one, at this moment 14 elastic cylindrical pins are added and cling solid glue laminated and go into to keep in the pin-and-hole of stand 3 and retainer lid 4, must be the lock-joint direction towards retainer 5 channeling directions, do not allow elastic cylindrical pin to protrude retainer lid 4.Be control retainer 5 internal diameter sizes and form and position tolerance thereof, made corresponding mould, cooperated, on retainer lid 4, assembled resilient key then with retainer 5 internal diameters, guarantee during assembling that the resilient key breach points to retainer and covers 4 guide surfaces, with the join strength of further assurance resilient key.

Claims (1)

1. elastic cylindrical pin connects the cylindrical roller thrust bearing of retainer, comprises rolling element, packing ring, retainer, and it is characterized in that: a row rolling element is not common right cylindrical, and the rolling surface of rolling element has circular arc modified line bus to repair type; Retainer is divided into two bodies, and by keeping stand and retainer lid to form, the elastic cylindrical pin that the manganese steel material of employing 65Mn is made connects; Retainer lid axial width is thicker than keeping stand, and non-guide surface is concordant with maintenance stand end face, and the retainer lid is by the packing ring guiding, and the retainer internal diameter is guided by axle, is evenly equipped with several R shape lubrication grooves on the retainer internal diameter.

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