CN202579702U - Universal joint capable of compensating wear of sealing device - Google Patents
Universal joint capable of compensating wear of sealing device Download PDFInfo
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- CN202579702U CN202579702U CN 201220141672 CN201220141672U CN202579702U CN 202579702 U CN202579702 U CN 202579702U CN 201220141672 CN201220141672 CN 201220141672 CN 201220141672 U CN201220141672 U CN 201220141672U CN 202579702 U CN202579702 U CN 202579702U
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- oil seal
- seal washer
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- lip
- proof cover
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Abstract
The utility model discloses a universal joint capable of compensating wear of a sealing device. The utility model provides a universal joint capable of compensating wear of the sealing device through which the wear of a lip of an oil seal ring can be automatically compensated and which is high in sealing performance and good in waterproof and sand-proof effects of a dustproof cover. The universal joint comprises a shaft neck, a bearing, a roller pin, an oil seal ring and a dustproof cover, wherein the oil seal ring has a U-shaped section; a primary lip and a second lip are formed on the outer side wall of a semi-arc in the oil seal ring; the primary lip and the second lip are provided with arc edges; a primary spring groove and a secondary spring groove are formed on the inner side wall of the semi-arc in the oil seal ring; a primary spring ring is clamped in the primary spring groove; a secondary spring ring is clamped in the secondary spring groove; a positioning convex edge is formed on the inner side wall of the semi-arc outside the oil seal ring; a middle folding ring which is vertically contacted with the inner side wall of the semi-arc outside the oil seal ring is arranged inside the dustproof cover; and a positioning groove matched with the positioning convex edge is formed on the middle folding ring of the contact surface. The universal joint capable of compensating wear of the sealing device is mainly used for the universal joint manufacturing technology.
Description
Technical field
The utility model relates to universal joint manufacturing technology field, relates in particular to the universal joint of a kind of ability compensation sealing device wearing and tearing.
Background technique
The existing conventional universal joint generally is made up of bearing, axle journal, needle roller, dustproof close cover; Because by the universal joint sealing of traditional structural design, dustproof weak effect; It is inner that silt, water etc. are invaded universal joint bearing easily in the using process, and bearing enclosure master lip is easy to wear, and lubricating grease is leaked; Thereby make universal joint because of leakage of oil, can cause the bearing dry grinding and premature failure.And existing dust-proof cover the time be easy to come off in assembling, cracked, cause the universal joint life of product to shorten.
Chinese patent mandate publication number CN 2888168Y, open day is on 04 11st, 2007, name is called the universal joint that discloses a kind of dust-proof sealing structure in the scheme of " a kind of universal joint of dust-proof sealing structure ".It comprises cross axle; The dust-proof cover of being located at central oil nozzle of cross axle and the bearing on the cross axle spindle nose and being arranged at bearing mouth end; Be provided with the oil sealing of needle roller and S type skeleton in the said bearing, the bearing periphery is provided with the outer ring, and said skeleton S type is translated into the anticreep tying outside the outer end; It is characterized in that described dust-proof cover is an elastomer, it is embedded with the dust-proof cover skeleton.Deficiency is that the universal joint of this dust-proof sealing structure, oil sealing are easy to can't compensate after wearing and tearing and the wearing and tearing; In use oil sealing is ejected owing to needle roller is easy to axial float; Lose sealing effect, cause lubricating grease leakage in the bearing, cause the bearing dry grinding and premature failure.
Chinese patent publication number CN 1075537A, open day is on 08 25th, 1993, name is called in the scheme of " enclosed-type global universal joint " and discloses a kind of enclosed-type global universal joint.It is by two ring buckles, two axles, and a circular steel ball, a retainer, a part such as stuffing box gland is formed.Deficiency is that the universal joint of this dust-proof sealing structure, oil sealing are easy to can't compensate after wearing and tearing and the wearing and tearing; In use oil sealing is ejected owing to needle roller is easy to axial float; Lose sealing effect, cause lubricating grease leakage in the bearing, cause the bearing dry grinding and premature failure.
The model utility content
The utility model is to be easy to wearing and tearing in order to solve existing universal joint oil sealing, can't compensate after oil seal washer master lip and the wearing and tearing of secondary lip, and needle roller is easy to axial float and oil sealing is ejected; Cause lubricating grease leakage in the bearing, cause the bearing dry grinding and lose sealing effect, and dust-proof cover is easy to come off when assembling; Unfavorable these deficiencies of dust-proof cover waterproof dustproof effect provide a kind of oil seal washer master lip not easy to wear, can compensate automatically after the wearing and tearing of oil seal washer master lip; Good seal performance, seal ring good stability, lubricating grease can not leak; Dust-proof cover assembling back difficult drop-off, the universal joint of a kind of ability compensation sealing device wearing and tearing that dust-proof cover waterproof dustproof effect is good.
To achieve these goals, the utility model adopts following technological scheme:
The universal joint of a kind of ability compensation sealing device wearing and tearing; Comprise axle journal, bearing, needle roller, oil seal washer and dust-proof cover, described Bearing Installation is on the spindle nose of axle journal, and described needle roller is installed in the bearing; Described oil seal washer is installed in the needle roller outer end in the bearing; The outer folding circle of dust-proof cover is connected with bearing, and the interior folding circle of dust-proof cover is connected with spindle nose, the described oil seal washer section shape that takes the shape of the letter U; In oil seal washer, be provided with main lip and secondary lip on the half arc outer side wall, and the edge of main lip and secondary lip is circular-arc edge; In oil seal washer, be provided with main spring groove and auxiliary spring groove on the half arc madial wall, card has the main spring circle in the main spring groove, and card has the auxiliary spring circle in the auxiliary spring groove; On the outer half arc madial wall of oil seal washer, be provided with the convex edge, location; Be provided with and the vertical middle folding circle that contacts of the outer half arc madial wall of oil seal washer in dust-proof cover inside, and on the middle folding circle of surface of contact, be provided with and locate the positioning groove that the convex edge is complementary.
This programme adopts automatic indemnifying measure, and the main lip that makes oil seal washer is after being worn, and the main lip of oil seal washer also can in time compensate the accurate combination degree with spindle nose, guarantees that the main lip wear extent of oil seal washer can not cause the universal joint leakage of oil.The main lip and the secondary lip of oil seal washer are circular-arc edge, make the anti-wear property of main lip and secondary lip good.The circular-arc edge of main lip and secondary lip has elasticity, and when main lip was compressed by the main spring circle, the elastic strain of spindle nose can be close in the circular-arc edge of main lip; When secondary lip was compressed by the auxiliary spring circle, the elastic strain of spindle nose can be close in the circular-arc edge of secondary lip, made the sealing effect of oil seal washer better.Simultaneously, the good stability at circular-arc edge flows and deforms not being vulnerable to grease, and oil seal washer does not spill because of distortion makes grease.The inner middle folding circle of dust-proof cover well contacts with oil seal washer is vertical closely; And on surface of contact, also be provided with the convex edge, location and the positioning groove that are interlocked; Let the convex edge, location in the positioning groove of middle folding circle, rotate all the time, the middle folding circle of software can not squinted by occurrence positions because of the rotation of oil seal washer.Simultaneously, vertical surface contact makes sand or water be difficult to enter in the oil seal washer, thus strong assurance the waterproof sand prevention function of dust-proof cover, sealability is stable more good, helps improving and prolonging the life-span of universal joint.Because the main spring circle is installed in the main spring groove; The auxiliary spring circle is installed in the auxiliary spring groove; Make the main lip and the secondary lip of oil seal washer have certain pretightening force; Contact with the spindle nose elastic tight on the universal-joint journal, realize the main lip and the automatic compensate for wear amount of secondary lip ability after wearing and tearing of oil seal washer, to guarantee the long-acting sealability of universal joint oil seal washer.
As preferably, described main lip and described secondary lip are parallel to each other, and are circular arc lip groove between main lip and the secondary lip.Parallel lip can reduce the area of contact of lip and grease, and in rotation, main lip can be consistent with the secondary lip and the tight exposure level of spindle nose.Oil seal washer master lip is after being worn; The secondary lip of oil seal washer also can be under the condition that compresses of main spring circle; The timely accurate combination degree of Compensation oil seal master lip and spindle nose, the main lip of oil seal washer is worn and torn after, secondary lip can continue to compress spindle nose; Guarantee that the wearing and tearing of oil seal washer master lip can not cause the universal joint leakage of oil and damage universal joint, thereby improve the working life of universal joint.Circular arc lip groove has certain elastic strain; After main lip and secondary lip are under pressure; Certain deformation can take place in main lip and secondary lip, and circular arc lip groove just can be offset the amount of deformation, thereby the main lip that guarantees oil seal washer well well contacts with spindle nose with secondary lip.
As preferably; Described main spring groove is a semicircular arc main spring groove, and described auxiliary spring groove is a semicircular arc auxiliary spring groove, and semicircular arc main spring groove is located at the inboard bending place of half arc in the oil seal washer; Semicircular arc auxiliary spring groove is located at the main spring groove outside, and parallel with the main spring groove; Main lip and secondary lip are located on the outer side wall of the half arc section of bending inwards in the oil seal washer.Be encased in the main spring circle in the semicircular arc main spring groove, the main spring circle is difficult for the mobile position.Be encased in the auxiliary spring circle in the semicircular arc auxiliary spring groove, the auxiliary spring circle is difficult for the mobile position, makes the work of auxiliary spring circle more reliable.Semicircle main spring groove is parallel with semicircle auxiliary spring groove, makes them effectively to cooperate with main lip and secondary lip, guarantees that the main lip of oil seal washer well well contacts with spindle nose with secondary lip, makes the sealing effect of oil seal washer better.
As preferably, outer half arc of described oil seal washer outwards bends, be provided with on the madial wall of the outside bend section of outer half arc of oil seal washer with middle folding circle on the tapered plane that is complementary of vertical side, convex edge, described location is located on the tapered plane.Outer half arc of oil seal washer outwards bends, and the end of being convenient to outside bend section is installed on the madial wall of bearing, thereby can locate moving radially and moving axially of oil seal washer, guarantees the stability in the oil seal washer use, the working life of improving universal joint.
As preferably, the oil seal washer software on outer half arc of oil seal washer and oil seal washer top is embedded in and is provided with the oil seal washer skeleton, and the oil seal washer skeleton exposes at the outside bend section of outer half arc of oil seal washer.The oil seal washer skeleton has strengthened the hardness and the intensity of oil seal washer; The oil seal washer software is adopted at sealing position in oil seal washer; In the place that prevents that oil seal washer is axial and move radially, adopt and be embedded in the oil seal washer skeleton in the oil seal washer software, come oil seal washer is hardened and reinforing function; Guarantee the stability of oil seal washer work, improved the working life of universal joint.The oil seal washer skeleton exposes at outside bend section, can reduce the frictional force when the folding circle closely contacts with the oil seal washer skeleton in the dust-proof cover, prolongs the working life of universal joint.Be linked to be in the stability of the oil seal washer software of one and oil seal washer skeleton better; The oil seal washer skeleton plays fixation, and the oil seal washer software plays leakproof and anti-wear effect, and software is different with the function of oil seal washer skeleton; Provide convenience for oil seal washer flexibly, also make leak preventing effect better.The oil seal washer skeleton has bigger strength, makes that the Rear oil seal circle is installed not only has certain elasticity, also has certain strength, can sustain back-up ring to the outside thrust of oil seal washer, can be good at preventing that the anti-needle roller of needle roller from ejecting.
As preferably, the dust-proof cover software between folding circle and the interior folding circle is embedded in the dust-proof cover skeleton that is provided with the U-shaped shape outside, and the circle section is rolled in a side of dust-proof cover skeleton outside dust-proof cover and dust-proof cover top section exposes.The dust-proof cover skeleton plays the effect of sclerosis dust-proof cover; With bearing and the close-connected dust-proof cover software of spindle nose, can prevent effectively that micronic dusts such as sand or water from entering in the oil seal washer, the dust-proof cover skeleton exposes; Not fragile dust-proof cover software in the use, the working life that strengthens dust-proof cover.
As preferably, be provided with the bearing inner groovy that is complementary with oil seal washer skeleton end in bearing madial wall port.The bearing inner groovy is convenient to install the oil seal washer skeleton, makes the oil seal washer can axially I do not move radially, the stability when guaranteeing oil seal washer work.
As preferably, described outer folding circle inside end is provided with the outer convex edge of dust-proof cover, and described bearing outer side wall port is provided with the outer groove of bearing that is complementary with the outer convex edge of dust-proof cover.The outer groove of bearing is convenient to install dust-proof cover and is rolled over the outer convex edge of dust-proof cover on the circle outward, makes the dust-proof cover can axially I do not move radially, and guarantees the stability when dust-proof cover is worked.
As preferably, also comprise packing ring and back-up ring, described packing ring is installed in the needle roller inner end in the bearing, and described back-up ring is installed between the needle roller and oil seal washer in the bearing.When rotating, the grease in the bearing can flow with the rotation of needle roller, and the grease that flows can be blocked in the back-up ring, thereby reduces the leakage grease phenomenon that flows and take place because of grease.
As preferably, the edge of convex edge, described location is the circular arc edge, at the bottom of the bottom land of described positioning groove is arc-shaped slot.Friction when the edge of circular arc can reduce the bearing rotation, thus the damage that causes the dust-proof cover software on the dust-proof cover because of friction reduced, improve working life.Have certain compensatoryly simultaneously after the wearing and tearing, make rotating effect good, sand prevention good water-proof effect, good stability.
The utility model can reach following effect:
1, this programme adopts automatic indemnifying measure, and the main lip that makes oil seal washer is after being worn, and the main lip of oil seal washer also can in time compensate the accurate combination degree with spindle nose, guarantees that the main lip wear extent of oil seal washer can not cause the universal joint leakage of oil.
2, oil seal washer master lip and secondary lip are not easy to wear; Can compensate after oil seal washer master lip and the wearing and tearing of secondary lip; Needle roller can axial float not eject oil sealing, good seal performance, and lubricating grease can not leak; Dust-proof cover assembling back difficult drop-off, the universal joint of a kind of ability compensation sealing device wearing and tearing that dust-proof cover waterproof dustproof effect is good.
3, the dust sealing performance is good, and the location is reliable, helps improving the sealing and the dustproof effect of universal joint, prolongs the universal joint life-span.
4, oil seal washer good stability, the good dustproof effect of dust-proof cover.
Description of drawings
Fig. 1 is a kind of oil seal washer cross-sectional view of the utility model.
Fig. 2 is a kind of dust-proof cover cross-sectional view of the utility model.
Fig. 3 is a kind of bearing cross-sectional view of the utility model.
Fig. 4 is a kind of assembling broken section structural representation of the utility model.
1, half arc in the oil seal washer; 2, main spring circle; 3, semicircular arc main spring groove; 4, main lip; 5, circular-arc edge; 6, lip groove; 7, secondary lip; 8, tapered plane; 9, oil seal washer skeleton; 10, oil seal washer software; 11, outer half arc of oil seal washer; 12, oil seal washer top; 13, oil seal washer; 14, dust-proof cover skeleton; 15, dust-proof cover software; 16, outer folding circle; 17, the outer convex edge of dust-proof cover; 18, the outer groove of dust-proof cover; 19, vertical side; 20, middle folding circle; 21, dust-proof cover inner groovy; 22, interior folding circle; 23, dust-proof cover; 24, the outer groove of bearing; 25, bearing inner groovy; 26, bearing; 27, packing ring; 28, needle roller; 29, back-up ring; 30, spindle nose; 31, axle journal; 32, semicircular arc auxiliary spring groove; 33, auxiliary spring circle; 34, convex edge, location; 35, positioning groove.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technological scheme of the utility model.
Embodiment: the universal joint of a kind of ability compensation sealing device wearing and tearing of present embodiment.
As shown in Figure 1; The described oil seal washer section shape that takes the shape of the letter U; In oil seal washer, be provided with main lip 4 and secondary lip 7 on the outer side wall of half arc, 1 section of bending inwards; And the edge of main lip and secondary lip is circular-arc edge 5, and main lip 4 is parallel to each other with described secondary lip 7, is circular arc lip groove 6 between main lip and the secondary lip.Circular arc lip groove 6 can produce elastic strain when being compressed by main spring circle 2 or auxiliary spring circle 33, be convenient to the main spring circle and compress main lip 4, also is convenient to the auxiliary spring circle and compresses secondary lip 7.
As shown in Figure 1; In oil seal washer, be provided with semicircular arc main spring groove 3 and semicircular arc auxiliary spring groove 32 on the half arc madial wall; Semicircular arc main spring groove is located at half arc, 1 inboard bending place in the oil seal washer, and semicircular arc auxiliary spring groove 32 is located at the main spring groove outside, and semicircular arc main spring groove 3 is parallel to each other with semicircular arc auxiliary spring groove 32; Card has main spring circle 2 in the main spring groove, and card has auxiliary spring circle 33 in the auxiliary spring groove.The position stability that can keep the main spring circle of semicircular arc main spring groove is installed in the main spring circle in the semicircular arc main spring groove of oil seal washer 13, and the main spring circle just is difficult for rolling and dropping.The position stability that can keep the auxiliary spring circle of semicircular arc auxiliary spring groove.Be installed in the auxiliary spring circle in the semicircular arc auxiliary spring groove of oil seal washer 13, the auxiliary spring circle just is difficult for rolling and dropping.
As shown in Figure 1, oil seal washer 13 is made up of oil seal washer software 10 and oil seal washer skeleton 9, and the oil seal washer software can be a colloid, also can be soft plastic, perhaps other body of software material.The oil seal washer skeleton can be metal or hard plastics, perhaps other hard material.In a word, oil seal washer software and oil seal washer skeleton are linked to be in one through what sulfuration or other method embedded.The oil seal washer material also can be all kinds of rubber and plastics, cancels the dust-proof cover skeleton this moment, and integral body is made with rubber and plastic.
As shown in Figure 1, the oil seal washer software 10 on outer half arc 11 of oil seal washer and oil seal washer top 12 is embedded in and is provided with oil seal washer skeleton 9, and oil seal washer skeleton 9 exposes at outer half arc of oil seal washer 11 outside bend sections.
As shown in Figure 1, oil seal washer can be the U-groove bevel shape, also can be other shape that has an opening, and in a word, main lip 4 and secondary lip 7 are in the outside of opening, and main spring circle and auxiliary spring circle are located at the inside of opening.The secondary lip diameter that is provided with on the oil seal washer software is set as the lip groove of circular arc greater than 2～5 millimeters of main lips between main lip and the secondary lip, the lip groove of circular arc can increase the elasticity of main lip and secondary lip.After main lip wearing and tearing, secondary lip also can in time compensate the accurate combination degree with spindle nose, guarantees that the main lip of oil seal washer and the wear extent of secondary lip can not cause the universal joint leakage of oil, prolong the sealing cycle of oil seal washer.
Like Fig. 1, shown in Figure 2, on outer half arc of oil seal washer 11 madial walls, be provided with convex edge 34, location; Outer half arc 11 of oil seal washer outwards bends; Be provided with on the madial wall of outer half arc of oil seal washer 11 outside bend sections with middle folding circle 20 on the tapered plane 8 that is complementary of vertical side 19; Be located at convex edge 34, location on the tapered plane 8, and the edge of convex edge 34, location is the circular arc edge.
As shown in Figure 2, dust-proof cover 23 sections are the E font, dust-proof cover top section be arranged in dust-proof cover top section homonymy and have outer folding circle 16, folding circle 20 and folding circle 22, and outer folding circle 16 and interior folding enclose 22 two two ends that are opened in dust-proof cover top section.Also be provided with and the vertical middle folding circle 20 that contacts of outer half arc of oil seal washer 11 madial walls in dust-proof cover inside, middle folding circle is opened the middle part in dust-proof cover top section.Folding circle 16 inside end are provided with the outer convex edge 17 of dust-proof cover outside, middle folding circle end be provided with oil seal washer skeleton 9 on the vertical side 19 that is complementary of tapered plane 8.Between outer folding circle and the middle folding circle be the outer groove 18 of dust-proof cover of U-shaped, the outer groove 18 of this dust-proof cover be convenient to bearing 26 open end stretch into installation, the while also makes dust-proof cover roll over outward to enclose and middle folding circle has had elasticity.Between middle folding circle and interior folding circle, have the dust-proof cover inner groovy 21 of circular arc; In making, dust-proof cover inner groovy 21 has good elasticity between folding circle and the middle folding circle; Let folding circle when 8 on inclined-plane on the oil seal washer skeleton contacts; Have elasticity more, can after vertical side 20 is worn, can be compensated because middle folding circle is flexible.Dust-proof cover 23 is made up of dust-proof cover software 15 and dust-proof cover skeleton 14, and the dust-proof cover skeleton can be metal or hard plastics, perhaps other hard material, and dust-proof cover skeleton and dust-proof cover software are through perhaps being linked to be in one of other method embedding of sulfuration.The dust-proof cover material also can be all kinds of rubber and plastics, cancels the dust-proof cover skeleton this moment, and integral body is made with rubber and plastic.Dust-proof cover software between folding circle 16 and the interior folding circle 22 is embedded in the dust-proof cover skeleton 14 that is provided with the U-shaped shape outside, and 16 sections on circle is rolled in a side of dust-proof cover skeleton outside dust-proof cover and dust-proof cover top section exposes.The dust-proof cover section can be other shape, but an outer folding circle, middle folding circle and interior folding circle are arranged all the time.
As shown in Figure 2, be provided with and the vertical middle folding circle 20 that contacts of outer half arc of oil seal washer 11 madial walls in dust-proof cover inside, and on the middle folding circle of surface of contact, be provided with and locate the positioning groove 35 that the convex edge is complementary, and at the bottom of the bottom land of positioning groove 35 is arc-shaped slot.Dust-proof cover software between folding circle 16 and the interior folding circle 22 is embedded in the dust-proof cover skeleton 14 that is provided with the U-shaped shape outside, and 16 sections on circle is rolled in a side of dust-proof cover skeleton outside dust-proof cover and dust-proof cover top section exposes.Outer folding circle 16 inside end are provided with the outer convex edge 17 of dust-proof cover.
As shown in Figure 3, be provided with the bearing inner groovy 25 that is complementary with oil seal washer skeleton 9 ends in bearing 26 madial wall ports.Bearing outer side wall port is provided with the outer groove 24 of bearing that is complementary with the outer convex edge 17 of dust-proof cover.
Installation process: as shown in Figure 4, this universal joint comprises bearing 26, packing ring 27, needle roller 28, back-up ring 29, spindle nose 30, axle journal 31, oil seal washer 13, main spring circle 2, dust-proof cover 23 and auxiliary spring circle 33.Bearing 26 is installed on the spindle nose 30 of axle journal 31; Needle roller 28 is installed in the bearing 26; Packing ring 27 is installed in needle roller 28 inner ends in the bearing 26, and oil seal washer 13 is installed in needle roller 28 outer ends in the bearing 26, and back-up ring 29 is installed between the needle roller 28 and oil seal washer 13 in the bearing 26.Main spring circle 2 is installed in the semicircular arc main spring groove 3 in the oil seal washer 13U shape notch; Auxiliary spring circle 33 is installed in the semicircular arc auxiliary spring groove 32 in the oil seal washer 13U shape notch; The outer convex edge 17 of dust-proof cover on the dust-proof cover 23 outer folding circles 16 is connected with the outer groove 24 of bearing; The interior folding circle 22 of dust-proof cover 23 is connected with spindle nose 30 interference; The middle folding of dust-proof cover encloses the vertical side and vertical contact of oil seal washer outer half arc 11 madial walls on 20 ends, and the positioning groove on the middle folding circle of surface of contact contacts with convex edge, location close fit on outer half arc of oil seal washer 11 madial walls.As shown in Figure 4, be installed in dust-proof cover 23 on the spindle nose 30 of axle journal 31; Be installed in bearing 26 inner ends to packing ring 27, be installed in packing ring 13 outsides to needle roller 28 again, be installed in needle roller 28 outsides to back-up ring 29 again; Then, be installed in main spring circle 2 in the semicircular arc main spring groove 3 in the oil seal washer 13 again; Then, be contained in the back-up ring outside in the bearing to oil seal washer again, and then be installed into the spindle nose on the axle journal in the bearing; Then, be installed in the dust-proof cover chucking on the bearing; The main spring circle can make main lip closely paste the spindle nose of axle journal.
Using process: as shown in Figure 4, after installing, the outer convex edge of dust-proof cover on the outer folding circle snaps onto in the outer groove of bearing, forms the dustproof barrier in first road; Vertical side on the middle folding circle closely contacts with the tapered plane of oil seal washer skeleton, forms the dustproof barrier in second road; Interior folding circle is connected with the spindle nose tight interference fit, forms the dustproof barrier in the 3rd road.The dustproof barrier of the dustproof barrier in first road and first road has been realized the axial and radial location of dust-proof cover simultaneously.
As shown in Figure 4; Between between oil seal washer and the needle roller, a back-up ring is installed; Because oil seal washer is fixed through the position of oil seal washer skeleton and bearing inner groovy, so back-up ring can be fixed needle roller axial position of raceway in bearing inner wall to needle roller and the certain axial pre tightening force of packing ring generation; Thereby prevent that the stressed back of needle roller from axial float taking place oil seal washer is ejected, also fixed the cooperation position of needle roller and spindle nose simultaneously.Needle roller in the bearing can be designed to single or two-row structure according to use condition.
In use, the main spring circle can be regulated the seal of the main lip in the oil seal washer freely, and the auxiliary spring circle can be regulated the seal of the secondary lip in the oil seal washer freely, realizes the automatic compensation of universal joint seal arrangement wearing and tearing.Because main lip and secondary lip have elastic strain, make that the seal effect of oil seal washer is very good.The close fit of positioning groove 35 and convex edge 34, location, folding circle 20 in use can offset track in not only making, and the circular arc edge makes and can be compensated after the wearing and tearing.Simultaneously, because spring has austerity, in the time of main lip and secondary lip appearance wearing and tearing, main spring circle and auxiliary spring circle can shrink automatically, thereby the automatic adjusting compensation of realization oil seal washer seal arrangement has guaranteed that the grease in the bearing can not spill.The interior folding circle of dust-proof cover 23 and spindle nose 30 interference fit of bearing 31 closely link to each other, and add the dustproof barrier in three roads of dust-proof cover, and materials such as dust outside can stopping fully or water enter in the bearing.
Combine accompanying drawing to describe the mode of execution of the utility model above, but not limited by the foregoing description when realizing, those of ordinary skills can make various variations or modification within the scope of the appended claims.
Claims (10)
1. the universal joint of ability compensation sealing device wearing and tearing comprises axle journal (31), bearing (26), needle roller (28), oil seal washer (13) and dust-proof cover (23), and described Bearing Installation is on the spindle nose (30) of axle journal; Described needle roller is installed in the bearing; Described oil seal washer is installed in the needle roller outer end in the bearing, and the outer folding circle (16) of dust-proof cover is connected with bearing, and the interior folding circle (22) of dust-proof cover is connected with spindle nose; It is characterized in that; The described oil seal washer section shape that takes the shape of the letter U in oil seal washer, be provided with main lip (4) and secondary lip (7) on half arc (1) outer side wall, and the edge of main lip and secondary lip is circular-arc edge (5); In oil seal washer, be provided with main spring groove and auxiliary spring groove on the half arc madial wall, card has main spring circle (2) in the main spring groove, and card has auxiliary spring circle (33) in the auxiliary spring groove; On outer half arc of oil seal washer (11) madial wall, be provided with convex edge (34), location; Be provided with and the vertical middle folding circle (20) that contacts of outer half arc of oil seal washer (11) madial wall in dust-proof cover inside, and on the middle folding circle of surface of contact, be provided with and locate the positioning groove (35) that the convex edge is complementary.
2. the universal joint of a kind of ability compensation sealing device according to claim 1 wearing and tearing is characterized in that described main lip (4) and described secondary lip (7) are parallel to each other, and is circular arc lip groove (6) between main lip and the secondary lip.
3. the universal joint of a kind of ability compensation sealing device according to claim 1 and 2 wearing and tearing; It is characterized in that; Described main spring groove is a semicircular arc main spring groove (3), and described auxiliary spring groove is a semicircular arc auxiliary spring groove (32), and semicircular arc main spring groove is located at the inboard bending place of half arc (1) in the oil seal washer; Semicircular arc auxiliary spring groove (32) is located at the main spring groove outside, and parallel with the main spring groove; Main lip (4) and secondary lip (7) are located on the outer side wall of half arc (1) section of bending inwards in the oil seal washer.
4. the universal joint of a kind of ability compensation sealing device according to claim 1 wearing and tearing; It is characterized in that; Outer half arc of described oil seal washer (11) is bending outwards; Outer half arc of oil seal washer (11) outwards be provided with on the madial wall of bend section with middle folding circle (20) on the tapered plane (8) that is complementary of vertical side (19), convex edge, described location (34) is located on the tapered plane (8).
According to claim 1 or 4 described a kind of can compensation sealing the universal joint of devices wearing and tearing; It is characterized in that; Oil seal washer software (10) in outer half arc of oil seal washer (11) and oil seal washer top (12) is embedded in and is provided with oil seal washer skeleton (9), and oil seal washer skeleton (9) exposes at the outside bend section of outer half arc of oil seal washer (11).
6. the universal joint of a kind of ability compensation sealing device according to claim 1 wearing and tearing; It is characterized in that; Dust-proof cover software between folding circle (16) and the interior folding circle (22) is embedded in the dust-proof cover skeleton (14) that is provided with the U-shaped shape outside, and circle (16) section is rolled in a side of dust-proof cover skeleton outside dust-proof cover and dust-proof cover top section exposes.
7. the universal joint of a kind of ability compensation sealing device according to claim 5 wearing and tearing is characterized in that, is provided with the bearing inner groovy (25) that is complementary with oil seal washer skeleton (9) end in bearing (26) madial wall port.
8. the universal joint of a kind of ability compensation sealing device according to claim 6 wearing and tearing; It is characterized in that; Described outer folding circle (16) inside end is provided with the outer convex edge (17) of dust-proof cover, and described bearing outer side wall port is provided with the outer groove (24) of bearing that is complementary with the outer convex edge (17) of dust-proof cover.
9. the universal joint of a kind of ability compensation sealing device according to claim 1 wearing and tearing; It is characterized in that; Also comprise packing ring (27) and back-up ring (29); Described packing ring is installed in needle roller (28) inner end in the bearing, and described back-up ring (29) is installed between the needle roller (28) and oil seal washer (13) in the bearing (26).
10. according to claim 1 a kind of can compensation sealing the universal joint of device wearing and tearing, it is characterized in that the edge of convex edge, described location (34) is the circular arc edge, at the bottom of the bottom land of described positioning groove (35) is arc-shaped slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220141672 CN202579702U (en) | 2012-04-06 | 2012-04-06 | Universal joint capable of compensating wear of sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220141672 CN202579702U (en) | 2012-04-06 | 2012-04-06 | Universal joint capable of compensating wear of sealing device |
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| Publication Number | Publication Date |
|---|---|
| CN202579702U true CN202579702U (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220141672 Expired - Fee Related CN202579702U (en) | 2012-04-06 | 2012-04-06 | Universal joint capable of compensating wear of sealing device |
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| Country | Link |
|---|---|
| CN (1) | CN202579702U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443584A (en) * | 2014-09-12 | 2016-03-30 | 斯凯孚公司 | Sealing device for a rolling bearing |
| CN112392867A (en) * | 2020-11-05 | 2021-02-23 | 杭州正强传动股份有限公司 | Sealed dustproof cross axle universal joint |
-
2012
- 2012-04-06 CN CN 201220141672 patent/CN202579702U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443584A (en) * | 2014-09-12 | 2016-03-30 | 斯凯孚公司 | Sealing device for a rolling bearing |
| CN105443584B (en) * | 2014-09-12 | 2020-02-21 | 斯凯孚公司 | Sealing device for rolling bearing |
| CN112392867A (en) * | 2020-11-05 | 2021-02-23 | 杭州正强传动股份有限公司 | Sealed dustproof cross axle universal joint |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121205 Termination date: 20190406 |