CN2427666Y - Combination type thrust bearing - Google Patents

Abstract

The utility model relates to a combination type thrust bearing arranged on a rotary shaft, which comprises two movable ring end covers and an outer ring sealing sleeve connected with two movable ring end covers; a plastic lubrication ring is arranged in a hollow cavity enclosed by the two movable ring end covers and the outer ring sealing sleeve; the plastic lubrication ring is uniformly distributed with holes filled with lubrication. The utility model has big sliding surface without rolling bodies, which avoids the partial plastic deformation of the contact surface of the rolling body to form pits. The utility model has the advantages of high stability, no noise and durability.

Description

The combined type thrust-bearing

The utility model relates to a kind of bearing that is installed on the rotatingshaft.

Bearing is to be used for the rotating shaft rotation, the running element that reduces friction, employed thrust-bearing in the existing rotating shaft generally is made up of upper and lower ring, rolling element and retainer, described rolling element is to move on upper and lower ring rolling surface, and the load born of spring bearing.This kind thrust-bearing has following shortcoming in use: because rolling element and raceway on the upper and lower ring are to contact or line contacts, under the alternation Axial Loads, rolling element easily is offset, and makes rotating shaft and bearing decentraction, vibrates.After bearing is subjected to than thump, can make the surface of contact between upper and lower ring and the rolling element form oscillation mark, this oscillation mark is a kind of heavier plastic deformation, can cause upper and lower ring and rolling element surface to produce pit, on rolling element, produce concave surface gradually,, just can produce resistance when rolling element operates at the concave surface place, vibration, noise etc. occur and lead Chang Xianxiang, thereby quicken the damage of bearing.

The purpose of this utility model provides a kind of combined type thrust-bearing of a kind of good stability, wear-resistant, shock-resistant, long service life.

The utility model is achieved in that a kind of combined type thrust-bearing, comprise two rotating ring end caps and the outer ring stuffing box gland that is connected two rotating ring end caps, it is characterized in that: be provided with a plastics drip ring in the cavity that two rotating ring end caps and outer ring stuffing box gland are surrounded.Be laid with the charge of oil lubrication hole on the described plastics drip ring.The outside of described two rotating ring end caps all has bevel edge, and fastens with the undergauge at stuffing box gland two ends, outer ring.

The utility model mainly is to replace the interior rolling element of bearing with the plastics drip ring, and the inwall of two rotating ring end caps in the above and below of this plastics drip ring and the bearing reclines, and the slide area of thrust-bearing is big like this, can bear bigger load.Can be provided with lubrication hole on the plastics drip ring, when the assembling bearing, solid oil can be tucked in the lubrication hole, not wear and tear to guarantee bearing.Described plastics drip ring adopts thermoplastic engineering plastic, and it possesses the advantage of self-lubrication, and lubricating oil filling not during running can keep the good lubrication state equally.

The utlity model has following advantage: slide area is big, does not have rolling element, the vibration that the rolling element skew is produced can not occur.The utility model can be applicable in the rugged environment, because it is face contact, it is strong to absorb impact capacity, and the surface of contact of having avoided rolling element produces local plastic deformation and the pit that forms.The utility model good stability, noise free, anti-use.

Drawing is described as follows:

Fig. 1 is the utility model sectional structure schematic representation.

Fig. 2 is Figure 1A-A half section structural representation.

Below in conjunction with accompanying drawing the utility model is done further narration:

Referring to Fig. 1.As can be seen from the figure, the utility model comprises upper and lower two rotating ring end caps 1,2, the centre has wears axis hole 4, clamping has anti abrasive plastics drip ring 3 between two rotating ring end caps 1,2, the upper and lower end face of plastics drip ring 3 contacts with the internal face of two rotating ring end caps, two rotating ring end cap 1,2 outsides are provided with bevel edge 5, and it links to each other with the undergauge 6 at outer ring stuffing box gland 7 two ends of tubular.So not only guarantee the seal of slip surface, prevent that simultaneously extraneous dirt from invading the erosion that is caused in the bearing.Referring to Fig. 2, as we know from the figure, be laid with lubrication hole 8 on the plastics drip ring 3, during the assembling bearing, solid oil can be filled in the lubrication hole 8, making has enough oiling agents to flow out in the bearing, guarantee the smooth and easy rotation of bearing.

Claims (3)

1, a kind of combined type thrust-bearing, comprise two rotating ring end caps (1,2) and the outer ring stuffing box gland (7) that is connected two rotating ring end caps (1,2), it is characterized in that: be provided with a plastics drip ring (3) in the cavity that two rotating ring end caps (1,2) and outer ring stuffing box gland (7) are surrounded.

2, combined type thrust-bearing according to claim 1 is characterized in that: be laid with charge of oil lubrication hole (8) on the described plastics drip ring (3).

3, combined type thrust-bearing according to claim 1 and 2 is characterized in that: the outside of described two rotating ring end caps (1,2) all has bevel edge (5), and fastens with the undergauge (6) at outer ring stuffing box gland (7) two ends.

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