CN204704272U - The Biserial cylindrical roller bearing of the anti-silt of waterproof - Google Patents

Abstract

Name of the present utility model is called the Biserial cylindrical roller bearing of the anti-silt of waterproof.Belong to automobile bearing technical field.There is the problem that the harmful matters such as dust, moisture, foreign matter easily invade Bearing inner in the Biserial cylindrical roller bearing that it mainly solves existing single layer sealing structure.Its major character is: comprise two inner rings, outer ring, two row rolling elements, inner ring is provided with inner ring raceway and inner ring raceway rib, outer ring is provided with first, second outer ring raceway side by side, and first, second outer ring raceway is provided with outer ring raceway rib, outer ring raceway oil duct, outer ring raceway annular groove and snap ring; Axial both sides location and installation between inner ring and outer ring has combined seal ring and jump ring; The black box of both sides forms the sealed chamber of Bearing inner sealing.The utility model has and effectively prevents leaking outside and preventing the harmful matter such as external dust, moisture, foreign matter from invading the advantage of Bearing inner of Bearing inner lubricating grease, makes bearing can under the cond required, safety and lasting running.

Description

The Biserial cylindrical roller bearing of the anti-silt of waterproof

Technical field

The utility model belongs to automobile bearing technical field, is specifically related to the Biserial cylindrical roller bearing that a kind of bilayer fills out fat sealing.

Background technique

At present, the sealed double-row roller bearing that market produces is generally individual layer stuffing box bearing, and namely bearing both ends of the surface are respectively provided with a seal ring; Sealing lip contacts with seal groove on High Rotation Speed inner ring and very easily weares and teares.Bearing is used in outside bad environments on grass-mowing machine, reaper, and the harmful matters such as dust, moisture, foreign matter constantly invade Bearing inner.Dust, moisture, foreign matter cause in bearing and make lubricating grease form greasy filth, greatly reduce the greasy property of bearing, reduce bearing working life; Particularly relatively severe for some work condition environments, and the occasion that bearing needs seal lubrication good, existing sealed double-row roller bearing cannot meet usage requirement.

Summary of the invention

For the deficiency that prior art exists, the purpose of this utility model is the Biserial cylindrical roller bearing providing the anti-silt of a kind of waterproof, have and effectively prevent leaking outside and preventing the harmful matters such as external dust, moisture, foreign matter from invading the advantage of Bearing inner of Bearing inner oiling agent, make bearing can under the condition required, safety and lasting running.

For achieving the above object, the utility model provides following technological scheme: the Biserial cylindrical roller bearing of the anti-silt of a kind of waterproof, comprise two bearing inner races), a bearing outer ring, and the two row rolling elements be assemblied between two bearing inner races and a bearing outer ring, the outside of two bearing inner races is provided with the inner ring raceway rib of inner ring raceway and inner ring raceway both sides, the inner side of bearing outer ring is provided with the first outer ring raceway side by side, second outer ring raceway, first outer ring raceway, the inner side of the second outer ring raceway is respectively equipped with the first outer ring raceway rib, first outer ring raceway oil duct and the second outer ring raceway rib, second outer ring raceway oil duct, first outer ring raceway, the outside of the second outer ring raceway is respectively equipped with outer ring raceway annular groove and snap ring, it is characterized in that: the axial both sides location and installation between two described bearing inner races and a bearing outer ring has combined seal ring, this combined seal ring comprises the first viton seal ring contacted with bearing outer ring, the second viton seal ring contacted with bearing inner race, cavity is formed, repack with grease in the cavity of cavity between first viton seal ring and the second viton seal ring.

The outer ring seal groove for the first viton seal ring location and installation is provided with inside bearing outer ring described in the utility model technical solution; The inner ring seal groove for the second viton seal ring location and installation is provided with outside described bearing inner race.

The first viton seal ring described in the utility model technical solution comprises the first skeleton, rubber outside diameter, first sealing lip, second sealing lip, and extension spring, second viton seal ring comprises the second skeleton, rubber inside diameter, 3rd sealing lip, and connect rubber between skeleton, second skeleton comprises support framework and two ends crimp upwards thereof, first sealing lip, second sealing lip contacts with support framework, the outside of the first sealing lip is fixed in extension spring, 3rd sealing lip and the first skeleton Interference contact, first sealing lip, second sealing lip and the second skeleton Interference contact, rubber outside diameter and bearing outer ring Interference contact are sealed and matched, rubber inside diameter and bearing inner race Interference contact are sealed and matched.

The lip of the first viton seal ring described in the utility model technical solution is towards partially interior, the lip of the second viton seal ring toward the outer side, the sealing lip of lip structure toward the outer side has better sealed elastic, sealing lip prevents dust and water from entering outwardly, make sealing lip and the first viton seal ring end face fit well further, improve sealability.

The utility model adopts such scheme, and combined seal ring can, by grease sealing at Bearing inner, prevent oiling agent from leaking outside on the one hand, effectively stops external dust, moisture and other foreign matter to enter Bearing inner on the other hand, reaches good sealability.

The utility model has and effectively prevents leaking outside and preventing the harmful matter such as external dust, moisture, foreign matter from invading the advantage of Bearing inner of Bearing inner oiling agent, makes bearing can under the condition required, safety and lasting running.

Accompanying drawing explanation

Fig. 1 is the structural representation of specific embodiment of the utility model.

Fig. 2 is the structural representation of the utility model combined seal ring.

Fig. 3 is the structural representation of the first viton seal ring in Fig. 2.

Fig. 4 is the structural representation of the second viton seal ring in Fig. 2.

In figure: bearing inner race 1, inner ring seal groove 1-1, inner ring oil duct 1-2, inner ring oil duct 1-3, raceway-lip 1-4, raceway-lip 1-5, bearing outer ring 2, first outer ring raceway 2-1, second outer ring raceway 2-2, second outer ring raceway oil duct 2-3, first outer ring raceway oil duct 2-4, second outer ring raceway rib 2-6, first outer ring raceway rib 2-7, outer ring raceway annular groove 2-8, outer ring seal groove 2-9, rolling element 3, snap ring 4, combined seal ring 5, first viton seal ring 5A, first skeleton 5A-1, rubber outside diameter 5A-2, first sealing lip 5A-3, second sealing lip 5A-4, extension spring 5A-5, second viton seal ring 5B, second skeleton 5B-1, support framework 5B-1-1, crimp 5B-1-2, rubber inside diameter 5B-2, 3rd sealing lip 5B-3, rubber 5B-4 is connected between skeleton, cavity 7.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1.The two row rolling elements 3 that the Biserial cylindrical roller bearing steel ball of the anti-silt of the utility model waterproof comprises two bearing inner races, 1, bearing outer ring 2 and is assemblied between two bearing inner races 1 and a bearing outer ring 2, rolling element 3 is band convex roller.The outside of two bearing inner races 1 is provided with the inner ring raceway rib 1-4 of inner ring raceway and inner ring raceway both sides, and the inner side of bearing outer ring 2 is provided with the first outer ring raceway 2-1, the second outer ring raceway 2-2 side by side.The inner side of the first outer ring raceway 2-1, the second outer ring raceway 2-2 is respectively equipped with the first outer ring raceway rib 2-7, the first outer ring raceway oil duct 2-4 and the second outer ring raceway rib 2-6, the second outer ring raceway oil duct 2-3, the outside of the first outer ring raceway 2-1, the second outer ring raceway 2-2 is respectively equipped with outer ring raceway annular groove 2-8 and snap ring 4, first outer ring raceway oil duct 2-4, the second outer ring raceway oil duct 2-3 and is arranged on sidepiece bottom corresponding outer ring raceway.Axial both sides location and installation between two bearing inner races 1 and a bearing outer ring 2 has combined seal ring 5, and location and installation, between bearing inner race 1 and bearing outer ring 2, forms the sealed chamber of Bearing inner.

As shown in Figure 2, Figure 3, Figure 4.In the present embodiment, the seal ring of combined seal ring 5 adopts fluorine rubber to make, the resistance to temperature of fluorine rubber, water resistence, and every use feature such as wear resistance is comparatively good, and cost performance is high.Support frame adopts SPCC steel plate to make, and the tensile strength of SPCC is higher, good rigidly.Combined seal ring 5 comprises the first viton seal ring 5A, the second viton seal ring 5B.Repack with grease in the cavity 7 formed between first viton seal ring 5A, the second viton seal ring 5B, forms bilayer and fills out fat sealing.First viton seal ring 5A comprises the first skeleton 5A-1, the rubber outside diameter 5A-2 coordinated with outer ring seal groove, the first sealing lip 5A-3, the second sealing lip 5A-4, and for the extension spring 5A-5 of press seal lip 5A-3.Second viton seal ring 5B comprises between skeleton that rubber inside diameter 5B-2, the 3rd sealing lip 5B-3 that the second skeleton 5B-1 coordinates with inner ring seal groove be connected with skeleton and is connected rubber 5B-4, and wherein the second skeleton 5B-1 comprises support framework 5B-1-1 for supporting ring and the crimp 5B-1-2 for being connected with the second viton seal ring 5B by the first viton seal ring 5A.The outer ring seal groove 2-9 for the first viton seal ring 5A location and installation is provided with inside bearing outer ring 2, be provided with the inner ring seal groove 1-1 for the second viton seal ring 5B location and installation outside bearing inner race 1, extension spring 5A-5 is fixed on the outside of the first viton seal ring 5A first sealing lip 5A-3.First viton seal ring 5A rubber outside diameter 5A-2 and outer ring seal groove 2-9 Interference contact are sealed and matched, and the second viton seal ring 5B rubber inside diameter 5B-2 and bearing inner race 1 external diameter enclose seal groove 1-1 Interference contact and is sealed and matched.

Certainly as the technological scheme that the utility model is feasible, described rubber seal can one end be also sealing lip, and the other end and support frame end connect and compose black box, and the other end that support frame connects one end relative to rubber seal is arranged on outer ring.But under this vibrational power flow, on support frame, kiss-coating is less, black box difficulty of processing is large, therefore the utility model adopts the first black box to arrange.

For improving bearing seal performance further, the lip of the 3rd sealing lip 5B-3 of the second viton seal ring 5B is outwards inclined, the sealing lip of lip structure toward the outer side has better sealed elastic, sealing lip prevents dust and water from entering outwardly, foreign Bearing inner more difficult to get access, make sealing lip and the first viton seal ring 5A end face fit well further, improve sealability.It is easier that lip makes combined seal ring 5 assemble when locating toward the outer side, and the first sealing lip 5A-3, the second sealing lip 5A-4 are arch structure settings; But arch first sealing lip 5A-3, the second sealing lip 5A-4 have better sealed elastic, make the second sealing lip 5A-4 and support frame 5B-1-1 contact outside well, sealing is reliable, therefore the utility model preferentially adopts arch structure to arrange.

For further improving sealability, the second sealing lip 5A-4 contacts with support frame 5B-1-1 and is sealed and matched.Skeleton dimensional accuracy and roughness high, it is good that the second sealing lip 5A-4 and support frame 5B-1-1 contact the sealing sealed.And if lip contact hypotenuse, then can be tilt because of contact position, and produce bad connection, the sealability for bearing has impact larger.In actual course of working, the second sealing lip 5A-4 contacts with support frame 5B-1-1 and is sealed and matched.Because combination seal cavity space is large and be filled with lubricating grease, this is beneficial to the heat radiation of stuffing box bearing very much, can not be larger because sealing the bearing temperature rise that cause, the raising close performance of bearing and life-span.

Adopt technique scheme, seal component architecture science, support frame is connected with viton seal ring reliably, first viton seal ring 5A and the second viton seal ring 5B close fit under the effect of extension spring 5A-5, bit combination is accurately formed to sealing, and effectively prevent seal ring internal lubrication fat from unloading leakage, improve bearing seal performance; First viton seal ring 5A adopts to contact with the second viton seal ring 5B and seals, and be filled with lubricating grease between two seal ring lips, sealability is better.First viton seal ring 5A outer lip and the second viton seal ring 5B external diameter for being sealed and matched by extension spring 5A-5, being produced bad connection and affect the sealability of bearing when avoiding individual layer sealing lip contact hypotenuse simultaneously.

Technique scheme, adopts bilayer to fill out the design of fat seal ring, avoid individual layer sealing lip need arrange seal groove defect at inner ring, and viton seal ring arranges science; Easier during sealing location, and the more important thing is, under this structure situation, be filled with the effect that lubricating grease plays lubrication and seal between two seal rings, seal ring does not wear and tear, and foreign can not enter.

Claims (5)

1. the Biserial cylindrical roller bearing of the anti-silt of waterproof, comprise two bearing inner races (1), a bearing outer ring (2), and the two row rolling elements (3) be assemblied between two bearing inner races (1) and a bearing outer ring (2), the outside of two bearing inner races (1) is provided with the inner ring raceway rib (1-4 of inner ring raceway and inner ring raceway both sides, 1-5), the inner side of bearing outer ring (2) is provided with the first outer ring raceway (2-1) side by side, second outer ring raceway (2-2), first outer ring raceway (2-1), the inner side of the second outer ring raceway (2-2) is respectively equipped with the first outer ring raceway rib (2-7), first outer ring raceway oil duct (2-4) and the second outer ring raceway rib (2-6), second outer ring raceway oil duct (2-3), first outer ring raceway (2-1), the outside of the second outer ring raceway (2-2) is respectively equipped with outer ring raceway annular groove (2-8) and snap ring (4), it is characterized in that: the axial both sides location and installation between two described bearing inner races (1) and a bearing outer ring (2) has combined seal ring (5), this combined seal ring (5) comprises the first viton seal ring (5A) contacted with bearing outer ring (2), the second viton seal ring (5B) contacted with bearing inner race (1), cavity (7) is formed, repack with grease in the cavity of cavity (7) between first viton seal ring (5A) and the second viton seal ring (5B).

2. the Biserial cylindrical roller bearing of the anti-silt of waterproof according to claim 1, is characterized in that: described bearing outer ring (2) inner side is provided with the outer ring seal groove (2-9) for the first viton seal ring (5A) location and installation; Described bearing inner race (1) outside is provided with the inner ring seal groove (1-1) for the second viton seal ring (5B) location and installation.

3. the Biserial cylindrical roller bearing of the anti-silt of waterproof according to claim 1 and 2, it is characterized in that: described the first viton seal ring (5A) comprises the first skeleton (5A-1), rubber outside diameter (5A-2), first sealing lip (5A-3), second sealing lip (5A-4), and extension spring (5A-5), second viton seal ring (5B) comprises the second skeleton (5B-1), rubber inside diameter (5B-2), 3rd sealing lip (5B-3), and between skeleton, connect rubber (5B-4), second skeleton (5B-1) comprises support framework (5B-1-1) and two ends crimp upwards (5B-1-2) thereof, first sealing lip (5A-3), second sealing lip (5A-4) contacts with support framework (5B-1-1), the outside of the first sealing lip (5A-3) is fixed in extension spring (5A-5), 3rd sealing lip (5B-3) and the first skeleton (5A-1) Interference contact, first sealing lip (5A-3), second sealing lip (5A-4) and the second skeleton (5B-1) Interference contact, rubber outside diameter (5A-2) and bearing outer ring (2) Interference contact are sealed and matched, rubber inside diameter (5B-2) and bearing inner race (1) Interference contact are sealed and matched.

4. the Biserial cylindrical roller bearing of the anti-silt of waterproof according to claim 1 and 2, is characterized in that: the lip of described the first viton seal ring (5A) is towards partially interior, and the lip of the second viton seal ring (5B) toward the outer side.

5. the Biserial cylindrical roller bearing of the anti-silt of waterproof according to claim 3, it is characterized in that: first sealing lip (5A-3) of described the first viton seal ring (5A), the lip of the second sealing lip (5A-4) are inwardly inclined, and the lip of the 3rd sealing lip (5B-3) of the second viton seal ring (5B) is outwards inclined.