CN110735855B - Dustproof rod end joint bearing and production method thereof - Google Patents
Dustproof rod end joint bearing and production method thereof Download PDFInfo
- Publication number
- CN110735855B CN110735855B CN201911026026.2A CN201911026026A CN110735855B CN 110735855 B CN110735855 B CN 110735855B CN 201911026026 A CN201911026026 A CN 201911026026A CN 110735855 B CN110735855 B CN 110735855B
- Authority
- CN
- China
- Prior art keywords
- rod end
- ring
- bearing
- support ring
- fixed support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/02—Sliding-contact bearings
- F16C23/04—Sliding-contact bearings self-adjusting
- F16C23/043—Sliding-contact bearings self-adjusting with spherical surfaces, e.g. spherical plain bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/74—Sealings of sliding-contact bearings
Abstract
The invention provides a dustproof rod end joint bearing and a production method thereof, and can solve the problem that a sealing cover is easy to fall off under the influence of external force in the prior art, so that the sealing effect and the reliability are poor. Dustproof rod end joint bearing includes: the rod end body is provided with a rod end eye hole; the bearing comprises a bearing outer ring, a bearing inner ring and a dust cover; the dust cover comprises an inner edge and an outer edge which are positioned in the ring body and on the periphery; the inner edge supporting structure is arranged close to the bearing inner ring, and the outer edge supporting structure is arranged close to the bearing outer ring; the outer edge supporting structure comprises a fixed supporting ring, the fixed supporting ring is fixed on the rod end body or on the bearing outer ring or between the rod end body and the bearing outer ring, and the fixed supporting ring is clamped and fixed by the rod end body and the bearing outer ring; the inner circumferential surface and/or the outer circumferential surface of the fixed support ring are/is provided with fixed matching surfaces which are used for being fixedly and hermetically connected with the outer edge of the dust cover, and a circumferential surface seal is formed between the dust cover and the fixed support ring.
Description
Technical Field
The invention relates to the technical field of bearings, in particular to a dustproof rod end joint bearing and a production method thereof.
Background
The rod end joint bearing is also called a fisheye joint, consists of an inner ring and an outer ring which take a sliding spherical surface as a contact surface, and is mainly applied to swinging motion, tilting motion and rotating motion with lower speed. When the rod end joint bearing is used, the inner ring and the outer ring slide relatively, the outer sides of the inner ring and the outer ring are not provided with sealing structures, dust in a working site can enter the working face of the bearing through a gap between the inner ring and the outer ring, and the working face of the bearing is worn by serious abrasive particles to lose efficacy.
In order to solve the problem that the rod end oscillating bearing loses efficacy due to abrasive wear, technical personnel provide a scheme that a dust cover is additionally arranged on the outer side of the bearing and is used for preventing dust from entering a bearing working face. For example, a rod end joint bearing disclosed in patent document No. CN201771976U, publication No. 2011.03.23, includes a rod end body, a self-lubricating radial joint bearing is assembled in a rod end eye of the rod end body, seal rings are disposed at two ends of the self-lubricating radial joint bearing, a seal cover is further disposed in the rod end joint bearing, and a groove is disposed on a side surface of the rod end body close to the rod end eye, so as to mount one end of the seal cover in the groove. The other end of the sealing cover is arranged on a shaft passing through an inner hole of the self-lubricating radial spherical plain bearing inner ring, and the sealing cover is locked with the shaft by a locking ring.
This bearing is when using, and the invasion of filth, oil, water and sand can effectively be prevented with the sealed cowling combined action to the sealing washer, reduces the wearing and tearing of bearing working face, improves life, but wherein also has some defects: the groove for fixing the sealing cover is formed in the side face of the rod end body, after the sealing cover is forcibly arranged in the groove, the sealing cover is stably connected with the rod end body, the sealing cover recovers deformation and presses acting forces to the two groove walls, and the acting forces extend along the radial direction of the sealing cover and press to the corresponding groove walls. When the sealing cover is subjected to a pulling-out force which causes the sealing cover to be pulled out of the groove, the acting force of the sealing cover pressing to the groove wall is vertical to the direction of the pulling-out force, and the pulling-out movement of the sealing cover cannot be resisted. With this kind of mode of arranging, the sealed cowling receives external force to drag when the bearing work, deviates from in the recess very easily, leads to sealed inefficacy, and stability is relatively poor.
Disclosure of Invention
The invention aims to provide a dustproof rod end joint bearing, which can solve the problems of poor sealing effect and poor reliability caused by the fact that a sealing cover is easy to fall off under the influence of external force in the prior art; the invention also aims to provide a production method of the dustproof rod end oscillating bearing, which can solve the problems in the prior art.
In order to achieve the purpose, the dustproof rod end joint bearing adopts the following technical scheme:
dustproof rod end joint bearing includes:
the rod end body is provided with a rod end eye hole;
the bearing outer ring is fixedly arranged in the rod end eye hole and is fixed relative to the rod end body;
a bearing inner race having a shaft mounting hole, fitted in the bearing outer race;
the dust cover is a ring body and is used for shielding a gap between the inner ring and the outer ring of the bearing, and the dust cover comprises an inner edge and an outer edge which are positioned in the inner periphery and the outer periphery of the ring body;
an inner edge support structure disposed adjacent the bearing inner race for supporting an inner edge of the dust cover;
an outer edge support structure disposed proximate the bearing cup for supporting an outer edge of the dust shield;
the outer edge supporting structure comprises a fixed supporting ring, the fixed supporting ring is fixed on the rod end body or on the bearing outer ring or between the rod end body and the bearing outer ring and is clamped and fixed by the rod end body and the bearing outer ring;
the inner circumferential surface and/or the outer circumferential surface of the fixed support ring are/is provided with fixed matching surfaces which are used for being fixedly and hermetically connected with the outer edge of the dust cover, and a circumferential surface seal is formed between the dust cover and the fixed support ring.
The beneficial effects are that: the dustproof rod end joint bearing is provided with the fixed support ring, and the fixed support ring is arranged in a coaxial or axial parallel mode with the bearing outer ring, so that the normal of a fixed matching surface on the fixed support ring is perpendicular to the axial line of the fixed support ring. By the arrangement, on one hand, a large enough space can be provided for the fixed sealing connection of the fixed support ring and the outer edge of the dust cover to meet the requirements of fixation and sealing; on the other hand, the direction of the constraint action force between the fixed matching surface and the outer edge is the radial direction of the fixed support ring, when the dust cover is subjected to an external force along the axial direction of the fixed support ring, the direction of the constraint action force is vertical to the direction of the constraint action force, the connection of the dust cover and the fixed support ring is influenced slightly or even not, and therefore the sealing effect and the connection stability of the dust cover are guaranteed.
Further, the fixed support ring is provided with an inserting part and a protruding part, the inserting part is inserted into the rod end eye hole when the fixed support ring is used, and the protruding part protrudes from the rod end eye hole;
the insertion part of the fixed support ring is tightly matched with the rod end eye, or the insertion part of the fixed support ring is clamped and fixed between the rod end body and the bearing outer ring.
The beneficial effects are that: the fixing of the fixing support ring is realized by the inserting part of the fixing support ring into the hole of the end of the rod, the structure is simple, and certain sealing strength can be ensured.
Further, the insertion portion of the fixed support ring has an inner side surface and an outer side surface in the axial direction of the fixed support ring;
the inner side surface of the insertion part is abutted against the end surface of the bearing outer ring, and the outer side surface of the insertion part is matched with the hole edge of the rod end eyelet;
the rod end eye comprises a hole edge, the hole edge extends inwards along the radial direction of the rod end eye and is pressed against the outer side face of the inserting portion, and the hole edge is used for pressing the fixed support ring towards the bearing outer ring;
the aperture is formed by a preformed structure on the rod end body, or by plastic deformation of the rod end body by extruding the rod end body during assembly.
The beneficial effects are that: the hole edge of the rod end eyelet is utilized to jack the fixed support ring, the fixed support ring is compressed, other connecting structures do not need to be arranged on the oscillating bearing, and the oscillating bearing is simple in structure and high in reliability.
Furthermore, the outer side surface of the insertion part comprises an inclined surface, the inclined surface is a part pressed by the hole in the fixed support ring, and the inclined surface faces the outer side of the axis of the fixed support ring;
the hole edge is provided with an adaptive inclined surface, and the adaptive inclined surface presses against the inclined surface of the insertion part and is attached to the inclined surface;
after the fixed support ring is installed in the rod end eyelet, the rod end body is extruded to enable the rod end body to generate plastic deformation, and the edge of the rod end eyelet flows along the radial direction after being extruded to form the hole edge of the rod end eyelet.
The beneficial effects are that: the inclined plane matched with the hole edge is arranged on the fixed support ring, so that the pressure applied to the fixed support ring faces to the axis of the fixed support ring, and the effect of pressing and matching the fixed support ring and the hole edge can be well guaranteed.
Furthermore, the protruding part of the fixed support ring comprises a baffle table, the baffle table is arranged on one side back to the bearing outer ring, and the baffle table is annular;
keep off the hole edge interval arrangement of platform and rod end eyelet, keep off the hole edge of platform and rod end eyelet and form the confession between the hole edge the outward flange inlays the annular of establishing, fixed fitting surface is the bottom surface of annular.
The beneficial effects are that: the ring groove is formed by the baffle table and the bearing outer ring, the structure is simple, an operator does not need to process a complex ring groove, the processing amount is reduced, and the assembly and the manufacture are convenient.
Furthermore, a step surface is arranged on the end surface of the bearing outer ring, the step surface comprises an axial supporting surface and a radial supporting surface, the axial supporting surface faces the outer side of the rod end eye hole in the axial direction of the rod end eye hole, and the radial supporting surface faces the outer side of the rod end eye hole in the radial direction of the rod end eye hole;
the radial supporting surface is used for supporting an inserting part of the fixed supporting ring, and the inserting part is clamped by the radial supporting surface and a hole edge of the rod end eye in a matching mode in the radial direction of the rod end eye.
The beneficial effects are that: the stepped surface is arranged, the bearing outer ring is supported by the axial supporting surface and the radial supporting surface in the stepped surface, and the inserted part of the fixed supporting ring can be clamped by a reaction force when the fixed supporting ring is pressed by the jacking force, so that a good fixing effect is ensured.
In order to achieve the purpose, the production method of the dustproof rod end oscillating bearing adopts the following technical scheme:
the production method of the dustproof rod end oscillating bearing comprises the following steps:
step 1: assembling a bearing inner ring and a bearing outer ring on the rod end body;
step 2: installing a fixed support ring, namely fixedly assembling the fixed support ring on the rod end body, or fixedly assembling the fixed support ring on the bearing outer ring, or clamping and fixing the fixed support ring, placing the fixed support ring between the rod end body and the bearing outer ring, and clamping and fixing the fixed support ring by the rod end body and the bearing outer ring; the axis of the fixed support ring is parallel to or coincident with the axis of the bearing outer ring;
the fixed support ring comprises a fixed matching surface which is formed by the part or the complete peripheral surface of the fixed support ring;
and step 3: installing a dust cover for shielding a gap between an inner ring and an outer ring of the bearing, wherein the outer edge of the dust cover is installed on the fixed support ring, and the inner edge of the dust cover is installed on an inner edge support structure of the dustproof rod end joint bearing;
the fixed matching surface is used for being fixedly and hermetically connected with the outer edge of the dust cover and used for forming a peripheral surface seal between the dust cover and the fixed supporting ring.
The beneficial effects are that: the dustproof rod end joint bearing is provided with the fixed support ring, and the fixed support ring is arranged in a coaxial or axial parallel mode with the bearing outer ring, so that the normal of a fixed matching surface on the fixed support ring is perpendicular to the axial line of the fixed support ring. By the arrangement, on one hand, a large enough space can be provided for the fixed sealing connection of the fixed support ring and the outer edge of the dust cover to meet the requirements of fixation and sealing; on the other hand, the direction of the constraint action force between the fixed matching surface and the outer edge is the radial direction of the fixed support ring, when the dust cover is subjected to an external force along the axial direction of the fixed support ring, the direction of the constraint action force is vertical to the direction of the constraint action force, the connection of the dust cover and the fixed support ring is influenced slightly or even not, and therefore the sealing effect and the connection stability of the dust cover are guaranteed.
Further, in step 2, when the fixed support ring is clamped and fixed between the rod end body and the bearing outer ring;
when the fixed support ring is installed, the fixed support ring is inserted into the rod end eye, an inserting part of the fixed support ring is positioned in the rod end eye, pressure is applied to the edge of the rod end eye, the edge of the rod end eye is forced to deform and flows along the radial direction of the rod end eye, a hole edge which is pressed against the rod end eye of the inserting part is formed, and the hole edge is used for pressing the fixed support ring on the end face of the bearing outer ring.
Has the advantages that: the hole edge of the rod end eyelet is utilized to jack the fixed support ring, the fixed support ring is compressed, other connecting structures do not need to be arranged on the oscillating bearing, and the oscillating bearing is simple in structure and high in reliability.
Furthermore, an inclined plane is arranged on the fixed support ring, and the inclined plane is positioned at a position matched with the hole edge and faces the outer side of the axis of the fixed support ring;
when the end body of the rod is extruded, the hole edge is provided with an adaptive inclined plane matched with the inclined plane on the fixed support ring, so that the adaptive inclined plane is tightly attached to the inclined plane of the fixed support ring.
The beneficial effects are that: the inclined plane matched with the hole edge is arranged on the fixed support ring, so that the pressure applied to the fixed support ring faces to the axis of the fixed support ring, and the effect of pressing and matching the fixed support ring and the hole edge can be well guaranteed.
Furthermore, a blocking platform is arranged on the fixed support ring and located on the protruding portion, extending out of the rod end eye hole, of the fixed support ring, the blocking platform and the hole edge are arranged at intervals, an annular groove is formed between the blocking platform and the hole edge of the rod end eye hole, the outer edge of the dust cover is installed in the annular groove, and a fixed matching surface is formed at the bottom of the annular groove.
The beneficial effects are that: the ring groove is formed by the baffle table and the bearing outer ring, the structure is simple, an operator does not need to process a complex ring groove, the processing amount is reduced, and the assembly and the manufacture are convenient.
Drawings
FIG. 1 is a schematic structural view of a rod end portion of a dust-proof rod end joint bearing of embodiment 1 of the present invention when engaged with an inner race and an outer race of the bearing;
FIG. 2 is a cross-sectional view of a dust control rod end knuckle bearing of example 1 of the dust control rod end knuckle bearing of the present invention;
FIG. 3 is an enlarged view of the outer race, stationary support ring and rod end body portion of the dust cap free end knuckle bearing embodiment 1 of the present invention;
FIG. 4 is an enlarged view of FIG. 2 at A;
in the figure:
10-a rod end body; 11-lubricating medium inlet; 12-a lubrication channel; 13-bearing outer race; 131-a radial bearing surface; 132-an axial bearing surface; 133-inclined plane; 14-bearing inner race;
20-shaft sleeve; 21-a baffle table; 22-step;
30-a dust cover; 31-a cover; 32-inner edge; 33-outer edge;
41-fixing the support ring; 411-a baffle table; 42-rotating the support ring.
Detailed Description
The following description will be made with reference to the accompanying drawings, in which embodiments of a dust-proof rod end joint bearing and a method for manufacturing the same according to the present invention are described.
Example 1 of the dust-proof rod end spherical plain bearing of the present invention: the dustproof rod end joint bearing can effectively prevent dust and the like from invading a bearing working surface between the bearing inner ring and the bearing outer ring through the dustproof cover arranged on the dustproof rod end joint bearing, reduces the abrasion of the bearing working surface and prolongs the service life of the bearing.
As shown in fig. 1 and 2, the main components of the dust-proof rod end joint bearing include a rod end body 10, the rod end body 10 has the same structure as that of other rod end joint bearings in the prior art, a rod end eye is provided thereon, a bearing outer ring 13 is installed in the rod end eye, and the bearing outer ring 13 and the rod end body 10 are relatively fixed. The bearing inner ring 14 is movably assembled in the bearing outer ring 13, a spherical matching surface is arranged between the bearing outer ring 13 and the bearing inner ring 14, the spherical matching surface is a bearing working surface, the bearing inner ring 14 can rotate around the axis of the bearing outer ring 13 in the bearing inner ring 14 and can also rotate around the radial direction of the bearing outer ring 13 in the same direction, and a shaft mounting hole for a shaft to penetrate is formed in the bearing inner ring 14.
The main components of the dustproof rod end joint bearing further include a dust cover 30 for protecting the working surface of the bearing, and the arrangement of the components is described with reference to the vertical and horizontal directions shown in fig. 1 and 2, and in this embodiment, two dust covers 30 are provided, each of which is made of a rubber material, and are respectively located on the left and right sides of the dustproof rod end joint bearing to shield the gap between the bearing inner ring 14 and the bearing outer ring 13. As shown in FIG. 3, the dust shield 30 is in the shape of a ring having an outer edge 33 located at the outer periphery of the ring, an inner edge 32 located at the inner periphery of the ring, and a shield 31 located between the inner edge 32 and the outer edge 33. The outer edge 33 and the inner edge 32 mainly support the cover 31, and the cover 31 mainly functions to shield the gap.
The inner edge 32 and the outer edge 33 of the dust cover 30 are thicker than the cover 31, and the operator can tighten the dust cover on the outer peripheral surfaces of the shaft body and the sleeve body by utilizing the characteristic that the inner edge 32 and the outer edge 33 are thicker, thereby ensuring the sealing performance of the dust cover 30. The axial length of the bearing outer race 13 in this embodiment is less than the axial length of the rod end eye, so that the end face of the bearing outer race 13 is spaced from the plane of the rod end eye, and the bearing is fully retracted in the rod end eye.
The dust rod end joint bearing has an outer edge support structure for supporting the outer edge 33, and includes fixed support rings 41 provided outside both end surfaces of the bearing outer ring 13, and the structure of the fixed support rings 41 will be described by taking fig. 3 and 4 as an example. The fixed support ring 41 has an insertion portion inserted into the rod end eye and a projecting portion projecting from the rod end eye when in use, and a fixed mating face that mates with the outer edge 33 of the dust boot 30 is provided on the outer peripheral surface of the projecting portion of the fixed support ring 41.
Specifically, the end surface of the bearing outer ring 13 is provided with a stepped surface for supporting the fixed support ring 41, the stepped surface includes a radial support surface 131 and an axial support surface 132 which are connected, the radial support surface 131 faces the outside of the rod end eye in the radial direction of the rod end eye, and the axial support surface faces the outside of the rod end eye in the axial direction of the rod end eye.
The fixed support ring 41 is provided with a mounting groove, and the outer edge 33 of the dust cover 30 is forcibly mounted in the mounting groove, so that the outer edge 33 of the dust cover 30 is supported by the fixed support ring 41 to be fixed with the bearing outer ring 13 and the rod end body 10. When the fixing support ring 41 is used, the end surface facing the bearing outer ring 13 is a step-shaped adaptive surface which is adaptive to the step surface and is also in a step shape, and the step adaptive surface is formed by connecting the inner side surfaces of the inserting part and the extending part.
The peripheral surface of the insertion part is provided with an inclined surface 133, the inclined surface 133 faces to the outer side of the axis of the fixed support ring 41, a space for the hole edge to be pressed and inverted is formed between the inclined surface 133 and the hole edge of the rod end eye, and the inclined surface 133 of the insertion part is a part pressed by the hole edge. As shown in fig. 4, after the hole is pressed by an external force, the hole is turned inward along the radial extension of the rod end eye, so as to press on the inclined surface 133 of the fixed support ring 41, and press the fixed support ring 41 against the stepped surface of the bearing outer ring 13, and the radial support surface 131 and the hole of the rod end eye clamp the protruding part of the fixed support ring 41, so that the fixed support ring 41 and the bearing outer ring 13 are coaxially arranged.
The fixed support ring 41 further comprises an annular stop 411 arranged at the outer end, the stop 411 and the deformed hole edge are arranged at intervals, so that an annular groove used for installing the outer edge 33 of the dust cover 30 is formed between the stop 411 and the deformed hole edge, and the bottom of the annular groove is a fixed matching surface matched with the outer edge 33 in the fixed support ring 41. The dust cover 30 is made of a rubber material and is pressed into the annular groove of the fixing support ring 41 to seal with the circumferential surface of the fixing support ring 41.
The dustproof rod end joint bearing also has an inner edge supporting structure for supporting the inner edge 32, and mainly comprises a rotating supporting ring 42 and a supporting shaft, specifically, the supporting shaft is inserted into the bearing inner ring 14 in an interference fit manner and can be in rotation stop fit with the bearing inner ring 14, and when the supporting shaft rotates, the supporting shaft can drive the bearing inner ring 14 to rotate relative to the bearing outer ring 13. And the rotary support ring 42 is rotatably fitted on a portion of the support shaft protruding from the bearing inner race 14, which portion has a rotary engagement face that engages with the rotary support ring 42, the rotary engagement face being located axially outside the shaft mounting hole.
In this embodiment, a shaft sleeve 20 is inserted into the bearing inner race 14, the shaft sleeve 20 has an insertion section inserted into the bearing inner race 14 and an extension section extending from the bearing inner race 14, and the rotation matching surface belongs to a section of cylindrical surface of the extension section and is located outside the shaft mounting hole of the bearing inner race 14 along with the extension section. The rotating support ring 42 of the inner edge support structure is rotatably fitted on the rotating mating face of the support shaft.
The number of the shaft sleeves 20 in this embodiment is two, the axial length of each shaft sleeve 20 is smaller than the axial length of the shaft mounting hole, the shaft sleeves are respectively a left shaft sleeve 20 inserted into the bearing inner race 14 from the left side and a right shaft sleeve 20 inserted into the bearing inner race 14 from the right side, and the left half and the right half of each shaft sleeve 20 have the same structure and are only arranged at different positions.
The shaft sleeve 20 of each part adopts a reducing structure, the radial dimension of the inserted section is smaller than that of the extended section, the change of the radial dimension enables the connecting position of the two parts in the shaft sleeve 20 to form a step 22, and the step 22 is used for being matched with the side surface stop of the bearing inner ring 14, so that the axial position of the shaft sleeve 20 is limited.
At the end position of the shaft sleeve 20, an annular stop 21 extending outward in the radial direction is provided, the stop 21 and the step 22 form a stepped outer circumferential surface on the outer circumferential surface of the shaft sleeve 20, and a concave ring groove is formed between the stop 21 and the side surface of the bearing inner ring 14, an operator uses the whole ring groove surrounded by other structures for installing the rotating support ring 42 in terms of structural design, and the rotating support ring 42 is located between the bearing inner ring 14 and the stop 21 after being installed on the shaft sleeve 20. The groove bottom of the ring groove forms a rotating matching surface, the inner diameter of the rotating support ring 42 is larger than the outer diameter of the rotating matching surface, so that a gap is formed between the rotating support ring 42 and the rotating matching surface, and the size of the gap can ensure that the rotating support ring 42 is in rotating matching with the support shaft and can meet the sealing requirement.
The outer circumferential surface of the rotating support ring 42 is provided with an annular mounting groove, and the outer diameter of the rotating support ring 42 is larger than the outer diameter of the blocking platform 21, so that the outer circumferential surface of the rotating support ring 42 is higher than the outer circumferential surface of the blocking platform 21, and the rotating support ring 42 is mounted on the shaft sleeve 20 in an embedded manner. The rotating support ring 42 is a copper ring, the inner edge 32 of the dust cover 30 is mounted in the mounting groove of the rotating support ring 42 in a forced mounting manner, and the dust cover 30 is mounted on the rod end joint bearing through the rotating support ring 42 and the fixing support ring 41.
The length of the rotating support ring 42 in the axial direction of the sleeve 20 is smaller than the distance between the baffle 21 and the bearing inner ring 14, so that two ring surfaces on the left and right sides of the rotating support ring 42 are not in contact with the side surface of the baffle 21 and the side surface of the bearing inner ring 14 at the same time, when the sleeve 20 rotates along with the shaft, the rotating support ring 42 can keep a state of being relatively static with the bearing outer ring 13 and the rod end body 10, and the dust cover 30 keeps a static state all the time when in use because the rotating support ring 42 and the fixed support ring 41 do not rotate.
The dust cover 30 in the present embodiment is a rotary body, and the ring body shape thereof can be considered to be formed by a generatrix having a V-shaped profile surrounding the central axis by one turn; the inner and outer edges 32, 33 of the dust cap 30 are thicker to accommodate the corresponding inner and outer edge support structures, respectively, for supporting the cap 31 of the dust cap 30.
Specifically, the inner edge 32 of the dust cover 30 in this embodiment is a turned-up edge of the dust cover 30, the turned-up edge is formed by turning over a V-opening side opening of the dust cover 30 in a direction away from the bearing inner race 14, and the turned-up edge forms an angle with the outer surface of the cover 31 due to the turning-over direction of the turned-up edge being opposite to the direction of the V-opening. Therefore, in the axial direction, the inner edge 32 (i.e., the flanging) and a part of the cover 31 (a part of the cover 31 close to the inner edge 32) form an overlapping part, so that the inner edge 32 can radially support the cover 31 when the cover 31 is radially pressed inwards, or the overlapping part forms a folded structure in the dust cover 30, which can improve the strength of the dust cover 30, ensure that the dust cover 30 is not easily deformed, and even if the dust cover 31 is deformed, the inner edge 32 can also support the cover 31 to prevent excessive deformation. The dust boot 30 is arranged in such a manner as to also form a double-hole structure in which two holes, one large, and one small, are arranged in tandem in the axial direction of the dust boot 30, with the large hole being along the inner peripheral surface of the outer edge 33 and the small hole being along the inner peripheral surface of the inner edge 32.
Because the dustproof rod end joint bearing in this embodiment is provided with the dustproof cover 30, in order to ensure the flexibility when the bearing inner ring 14 and the bearing outer ring 13 slide relatively, a lubricating channel for a lubricating medium to flow between the bearing inner ring 14 and the bearing outer ring 13 is arranged in the rod end body 10, one end of the lubricating channel is a lubricating medium inlet 12, and a joint corresponding to the lubricating medium inlet 12 is arranged on the outer circumferential surface of the rod end body 10; the opening at the other end faces the bearing outer ring 13, a lubricating medium can directly enter the sliding matching surface of the bearing inner ring 14, and the lubricating of the rod end oscillating bearing is realized by the relative sliding of the bearing inner ring 14 and the bearing outer ring 13.
When assembling the dust cap rod end knuckle bearing of the present invention, an operator first installs the outer edge 33 of the dust cap 30 and then installs the inner edge 32 of the dust cap 30. Firstly, the fixed support ring 41 is placed on the stepped surface of the bearing outer ring 13, then the hole edge of the rod end eye is extruded, the hole edge is deformed towards the inner part of the rod end eye, and the deformed rod end eye edge and the radial support surface 131 are utilized to clamp the part of the bearing outer ring 13 extending into the rod end eye, so that the fixed support ring 41 is installed. The operator can force the outer edge 33 into the annular groove formed by the fixed support ring 41 and the rim of the hole.
When the inner edge 32 of the dust cover 30 is installed, the rotating support ring 42 is firstly sleeved on the shaft sleeve 20, and then the shaft sleeve 20 is forcibly installed in the bearing inner ring 14, so that the bearing inner ring 14 is in rotation stopping fit with the shaft sleeve 20. When a shaft penetrates into the shaft sleeve 20, the shaft rotates to drive the shaft sleeve 20 to rotate, and the bearing inner ring 14 and the bearing outer ring 13 slide relatively.
Wherein, rotate the support ring 42 and set up on axle sleeve 20, and be the stairstepping with axle sleeve 20's cooperation profile, in the dust cover 30 is difficult to be entered into from the passageway of stairstepping to large granule pollutants such as external dust, rotate the support ring 42 and when guaranteeing dust cover 30 stable connection, can cut off the invasion of dust again, guaranteed the life of bearing.
Example 2 of the dust-proof rod end spherical plain bearing of the present invention: the difference from the above embodiment is that the axis of the fixed support ring in this embodiment is no longer coincident with the axis of the bearing outer ring, and the two are arranged in an axis-parallel manner, where the normal of the fixed mating surface on the fixed support ring is perpendicular to the axis of the fixed support ring.
Example 3 of the dust-proof rod end spherical plain bearing of the present invention: the difference from the above embodiment is that the fixing mating surface on the fixing support ring is located on the inner circumferential surface of the fixing support ring in this embodiment, and is not limited to the scheme of arranging the fixing mating surface on the outer circumferential surface of the fixing support ring; or the inner circumferential surface and the outer circumferential surface are both provided with fixed matching surfaces, so that the applicability of the fixed support ring is improved.
Example 4 of the dust-proof rod end spherical plain bearing of the present invention: the difference from the above embodiment is that the fixed support ring in this embodiment is provided with a flange, and a fastener through hole adapted to the flange is provided at a corresponding position of the bearing outer ring or the rod end body, so that an operator can connect the fixed support ring to the bearing outer ring or the rod end body through the fastener; or the fixed support ring is provided with external threads, the side surface of the bearing outer ring or the rod end body is provided with a ring groove, and the groove wall of the ring groove is provided with internal threads, so that the fixed support ring is connected with the bearing outer ring or the rod end body through the threads; or the fixed support ring is provided with external threads, and the inner wall of the rod end eye is provided with internal threads, so that the fixed support ring is connected with the rod end body through threads.
Example 5 of the dust-proof rod end spherical plain bearing of the present invention: the difference from the above embodiment is that the hole edge for pressing the fixing support ring in this embodiment is a preformed structure, and instead of extruding the rod end body during assembly, the hole edge is formed by plastic deformation of the rod end body, and in this case, a deformable material such as rubber may be used for the fixing support ring.
Example 6 of the dust-proof rod end spherical plain bearing of the present invention: the difference from the above embodiments is that the portion of the fixed support ring pressed by the hole in the embodiment is a planar structure, and is not limited to the scheme of adopting the inclined surface structure.
Example 7 of the dust-proof rod end spherical plain bearing of the present invention: the difference from the previous embodiment is that in this embodiment, the protruding portion of the fixed support ring is directly machined with a ring groove, and the ring groove is used to mount the outer edge of the dust cover.
Example 8 of the dust-proof rod end spherical plain bearing of the present invention: the difference from the above embodiments is that in this embodiment, an inclined surface or a flat surface is provided on the end surface of the bearing outer ring, and the inclined surface or the flat surface is used to abut against the pressed fixed support ring, but not limited to the stepped surface.
The production method of the dustproof rod end oscillating bearing is mainly embodied in the installation of the fixed support ring. The method comprises the following steps:
step 1: the bearing outer ring, the bearing inner ring and the rod end body are correspondingly assembled, which belongs to the prior art and is not described in detail.
Step 2: the fixed support ring is placed on the stepped surface of the bearing outer ring, and is supported by the axial support surface and the radial support surface, but the position of the fixed support ring is not fixed at the moment.
And then, extruding the rod end body to enable the edge of the rod end eyelet to flow to the fixed support ring after being extruded, finally forming an edge pressing the inclined plane in the fixed support ring, and forming an adaptive inclined plane tightly attached to the inclined plane when the edge is extruded and subjected to plastic deformation so as to press the fixed support ring to the bearing outer ring, wherein the part of the fixed support ring inserted into the rod end eyelet is clamped by the eyelet edge and the radial support surface, so that the fixed support ring is clamped and fixed between the rod end body and the bearing outer ring.
The deformed edge of the hole fills the space between the inclined plane of the fixed support ring and the rod end eye hole, and an annular groove is formed between the baffle table at the end part of the fixed support ring and the edge of the hole.
And step 3: the outer edge of the dust cover is arranged in the ring groove, a fixed matching surface is formed at the bottom of the ring groove, and the outer edge is forcibly arranged in the ring groove and then forms a peripheral surface seal with the fixed matching surface; and installing the inner edge of the dust cover on the rotary support ring, so that the dust cover shields the gap between the bearing inner ring and the bearing outer ring.
In other embodiments of the method for manufacturing a dust-proof rod end oscillating bearing, the formation of the rim may be adjusted, for example, the hole rim for pressing the fixing support ring against the rod end body may be integrally formed with the rod end body, and the fixing support ring may be made of a rubber material and forcibly fitted into a space defined by the hole rim and the radial support surface.
In other embodiments of the method of manufacturing a dust control rod end knuckle bearing, the adjustment of the bevel on the fixed support ring may be performed, for example, the fixed support ring is no longer provided with a bevel, but rather has a planar structure, and the edge of the rod end eye still presses the flat on the fixed support ring.
In other embodiments of the method of manufacturing a dust control rod end knuckle bearing, the annular groove in the fixed outer edge may be adjusted, such as by machining an annular groove directly into the protruding portion of the fixed support ring.
The above-mentioned embodiments, the objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. Dustproof rod end joint bearing includes:
the rod end body is provided with a rod end eye hole;
the bearing outer ring is fixedly arranged in the rod end eye hole and is fixed relative to the rod end body;
a bearing inner race having a shaft mounting hole, fitted in the bearing outer race;
the dust cover is a ring body and is used for shielding a gap between the inner ring and the outer ring of the bearing, and the dust cover comprises an inner edge and an outer edge which are positioned in the inner periphery and the outer periphery of the ring body;
an inner edge support structure disposed adjacent the bearing inner race for supporting an inner edge of the dust cover;
an outer edge support structure disposed proximate the bearing cup for supporting an outer edge of the dust shield;
the method is characterized in that:
the outer edge supporting structure comprises a fixed supporting ring, the fixed supporting ring is fixed between the rod end body and the bearing outer ring and is clamped and fixed by the rod end body and the bearing outer ring;
the outer peripheral surface of the fixed support ring is provided with a fixed matching surface which is used for being fixedly and hermetically connected with the outer edge of the dust cover, and peripheral surface sealing is formed between the dust cover and the fixed support ring;
the fixed support ring is provided with an inserting part and a protruding part, the inserting part is inserted into the rod end eye hole when the fixed support ring is used, and the protruding part protrudes from the rod end eye hole;
the inserting part of the fixed support ring is clamped and fixed between the rod end body and the bearing outer ring; the inner circumferential surface of the extending part is provided with a limiting bulge capable of limiting the inner ring of the bearing;
the insertion portion of the fixed support ring has an inner side surface and an outer side surface in the axial direction of the fixed support ring;
the inner side surface of the insertion part is abutted against the end surface of the bearing outer ring, and the outer side surface of the insertion part is matched with the hole edge of the rod end eyelet;
the rod end eye comprises a hole edge, the hole edge extends inwards along the radial direction of the rod end eye and is pressed against the outer side face of the inserting portion, and the hole edge is used for pressing the fixed support ring towards the bearing outer ring;
the aperture is formed by a preformed structure on the rod end body, or by plastic deformation of the rod end body by extruding the rod end body during assembly.
2. The dust resistant rod end knuckle bearing of claim 1, wherein:
the outer side surface of the insertion part comprises an inclined surface, the inclined surface is a part pressed by the hole edge in the fixed support ring, and the inclined surface faces the outer side of the axis of the fixed support ring;
the hole edge is provided with an adaptive inclined surface, and the adaptive inclined surface presses against the inclined surface of the insertion part and is attached to the inclined surface;
after the fixed support ring is installed in the rod end eyelet, the rod end body is extruded to enable the rod end body to generate plastic deformation, and the edge of the rod end eyelet flows along the radial direction after being extruded to form the hole edge of the rod end eyelet.
3. The dust resistant rod end knuckle bearing of claim 1 or 2, wherein:
the protruding part of the fixed support ring comprises a baffle table which is arranged on one side back to the bearing outer ring and is annular;
keep off the hole edge interval arrangement of platform and rod end eyelet, keep off the hole edge of platform and rod end eyelet and form the confession between the hole edge the outward flange inlays the annular of establishing, fixed fitting surface is the bottom surface of annular.
4. The dust resistant rod end knuckle bearing of claim 1 or 2, wherein:
a step surface is arranged on the end surface of the bearing outer ring, the step surface comprises an axial supporting surface and a radial supporting surface, the axial supporting surface faces the outer side of the rod end eye hole in the axial direction of the rod end eye hole, and the radial supporting surface faces the outer side of the rod end eye hole in the radial direction of the rod end eye hole;
the radial supporting surface is used for supporting an inserting part of the fixed supporting ring, and the inserting part is clamped by the radial supporting surface and a hole edge of the rod end eye in a matching mode in the radial direction of the rod end eye.
5. The production method of the dustproof rod end oscillating bearing is characterized by comprising the following steps: the method comprises the following steps:
step 1: assembling a bearing inner ring and a bearing outer ring on the rod end body;
step 2: the fixed support ring is arranged, clamped and fixed, placed between the rod end body and the bearing outer ring and clamped and fixed by the rod end body and the bearing outer ring; the axis of the fixed support ring is parallel to or coincident with the axis of the bearing outer ring;
the fixed support ring comprises a fixed matching surface which is formed by the part or the complete peripheral surface of the fixed support ring;
and step 3: installing a dust cover for shielding a gap between an inner ring and an outer ring of the bearing, wherein the outer edge of the dust cover is installed on the fixed support ring, and the inner edge of the dust cover is installed on an inner edge support structure of the dustproof rod end joint bearing;
the fixed matching surface is used for being fixedly and hermetically connected with the outer edge of the dust cover and is used for forming peripheral surface sealing between the dust cover and the fixed supporting ring;
in step 2, when the fixed support ring is clamped and fixed between the rod end body and the bearing outer ring;
when the fixed support ring is installed, the fixed support ring is inserted into the rod end eye, the fixed support ring is provided with a protruding part protruding from the rod end eye, an inserting part of the fixed support ring is positioned in the rod end eye, pressure is applied to the edge of the rod end eye, the edge of the rod end eye is forced to deform and flows along the radial direction of the rod end eye, a hole edge pressing against the rod end eye of the inserting part is formed, and the hole edge is used for pressing the fixed support ring on the end face of the bearing outer ring; and a limiting bulge capable of limiting the inner ring of the bearing is arranged on the inner peripheral surface of the extending part.
6. The method of producing a dust resistant rod end knuckle bearing of claim 5, wherein:
an inclined plane is arranged on the fixed support ring, and the inclined plane is positioned at the position matched with the hole edge and faces to the outer side of the axis of the fixed support ring;
when the end body of the rod is extruded, the hole edge is provided with an adaptive inclined plane matched with the inclined plane on the fixed support ring, so that the adaptive inclined plane is tightly attached to the inclined plane of the fixed support ring.
7. The method for producing a dust control rod end knuckle bearing according to claim 5 or 6, wherein:
the dust cover is characterized in that a blocking platform is arranged on the fixed support ring and located on a protruding portion of the fixed support ring extending out of the rod end eye hole, the blocking platform and the hole edge are arranged at intervals, an annular groove is formed between the blocking platform and the hole edge of the rod end eye hole, the outer edge of the dust cover is installed in the annular groove, and a fixed matching surface is formed at the bottom of the annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911026026.2A CN110735855B (en) | 2019-10-25 | 2019-10-25 | Dustproof rod end joint bearing and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911026026.2A CN110735855B (en) | 2019-10-25 | 2019-10-25 | Dustproof rod end joint bearing and production method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110735855A CN110735855A (en) | 2020-01-31 |
| CN110735855B true CN110735855B (en) | 2022-01-25 |
Family
ID=69271484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911026026.2A Active CN110735855B (en) | 2019-10-25 | 2019-10-25 | Dustproof rod end joint bearing and production method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110735855B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576620B (en) * | 2020-12-31 | 2023-05-30 | 台州科锦轴承有限公司 | Rod end joint bearing and rod end joint bearing assembling device and assembling method |
| WO2024016463A1 (en) * | 2022-07-22 | 2024-01-25 | 江苏希西维轴承有限公司 | Composite sliding bearing for damping |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3814446A (en) * | 1971-01-26 | 1974-06-04 | K Derman | Sealing arrangement |
| US4109976A (en) * | 1977-04-11 | 1978-08-29 | Roller Bearing Company Of America | Self-aligning bushing |
| DE8309873U1 (en) * | 1983-09-22 | Hirschmann GmbH, 7239 Fluorn-Winzeln | Sealed joint head | |
| DE10256334A1 (en) * | 2002-12-03 | 2004-06-24 | Dr.Ing.H.C. F. Porsche Ag | Ball joint device for vehicle track rod connections has bearing bodies round ball joint element made with cylindrical sector in receiving boring of bearing holder |
| EP2505858A2 (en) * | 2011-04-01 | 2012-10-03 | Roller Bearing Company of America, Inc. | Spherical bearing with sealing member |
| CN105715678A (en) * | 2011-07-21 | 2016-06-29 | 美国滚柱轴承公司 | Sealing system for a bearing assembly, method for installing the sealing system and corresponding bearing assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9316257B2 (en) * | 2011-04-01 | 2016-04-19 | Roller Bearing Company Of America, Inc. | Spherical bearing with sealing member member |
-
2019
- 2019-10-25 CN CN201911026026.2A patent/CN110735855B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8309873U1 (en) * | 1983-09-22 | Hirschmann GmbH, 7239 Fluorn-Winzeln | Sealed joint head | |
| US3814446A (en) * | 1971-01-26 | 1974-06-04 | K Derman | Sealing arrangement |
| US4109976A (en) * | 1977-04-11 | 1978-08-29 | Roller Bearing Company Of America | Self-aligning bushing |
| DE10256334A1 (en) * | 2002-12-03 | 2004-06-24 | Dr.Ing.H.C. F. Porsche Ag | Ball joint device for vehicle track rod connections has bearing bodies round ball joint element made with cylindrical sector in receiving boring of bearing holder |
| EP2505858A2 (en) * | 2011-04-01 | 2012-10-03 | Roller Bearing Company of America, Inc. | Spherical bearing with sealing member |
| CN105715678A (en) * | 2011-07-21 | 2016-06-29 | 美国滚柱轴承公司 | Sealing system for a bearing assembly, method for installing the sealing system and corresponding bearing assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110735855A (en) | 2020-01-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2685118B1 (en) | Wheel hub rolling bearing assembly for a motor vehicle with a sealing device | |
| CN110735855B (en) | Dustproof rod end joint bearing and production method thereof | |
| CN103052819B (en) | Sealing device for rolling bearing | |
| EP0902203B1 (en) | Sealing assembly for a rolling bearing | |
| JP5149995B2 (en) | Corrugated extension sleeve for bearings | |
| CN110748558B (en) | Dustproof rod end joint bearing | |
| CN102109031A (en) | Pulley device for a tensioning or guide Roller | |
| WO2013004447A1 (en) | Sealed drive system | |
| EP2685119B1 (en) | Wheel hub rolling bearing assembly for a motor vehicle with a sealing device | |
| CN204900523U (en) | Entry driving machine work is biserial cylindrical roller bearing for arm | |
| CN102792044B (en) | Motor vehicle throw-out bearing provided with a sealing device | |
| CN108291576B (en) | Synthetic resin sliding bearing | |
| CN204127131U (en) | A kind of bearing seal structure | |
| CN112412986A (en) | Coal-winning machine walking wheel bearing of convenient maintenance | |
| CN108150524B (en) | Thrust bearing and retainer for thrust bearing | |
| CN212155453U (en) | Bearing for automobile steering knuckle | |
| CN201059353Y (en) | Hub bearing dust-proof apparatus | |
| CN113565959B (en) | Cabin penetrating sealing structure and cradle head | |
| EP2551542B1 (en) | Wheel-hub bearing/constant-velocity joint unit provided with a protective screen | |
| US20230029313A1 (en) | Sealing assembly for insertion between a stationary annular element and a rotating annular element, in particular between the outer and inner rings of a rolling bearing and associated wheel hub unit | |
| CN111058240B (en) | Washing machine outer barrel bottom and washing machine | |
| CN217045992U (en) | Live center with high sealing performance | |
| CN219588100U (en) | Framework oil seal | |
| CN213145300U (en) | Oil leakage prevention radial sealing dry well device | |
| CN211715537U (en) | Bearing for automobile steering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhan Songhua Inventor after: Kong Jingjing Inventor after: Qiu Ming Inventor after: Zhang Ping Inventor after: Zhao Yinlong Inventor after: Zeng Weilin Inventor before: Zhan Songhua Inventor before: Kong Jingjing Inventor before: Zhang Ping Inventor before: Zhao Yinlong Inventor before: Zeng Weilin |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20211220 Address after: 317006 Xiahui village, shaojiadu street, Linhai City, Taizhou City, Zhejiang Province Applicant after: TAIZHOU KEJIN BEARINGS Co.,Ltd. Applicant after: Henan University of Science and Technology Address before: 317006 Xiahui village, shaojiadu street, Linhai City, Taizhou City, Zhejiang Province Applicant before: TAIZHOU KEJIN BEARINGS Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |