CN213245344U - Linear bearing with end flange - Google Patents

Abstract

The utility model provides a take linear bearing of tip flange belongs to the technical field of bearing. A linear bearing with an end flange comprises a shell, a flange, a retainer, a ball and a sealing ring; the utility model discloses a set up shell and flange components of a whole that can function independently, and be provided with the conical flange of round on the outer wall of shell one end, be provided with on the flange with the inclined plane complex of flange face that compresses tightly, make locate the shell at the flange cover after, compress tightly the face and restrict and compress tightly the flange, the installation of shell on the casing of other structures has been realized through the flange, moreover, the steam generator is simple in structure, high durability and convenient installation, still can realize the installation under the not high condition of shell size and structural strength requirement, low processing cost, in addition, be provided with a plurality of balls in the holder, and restrict the holder in the shell through the sealing washer, realize through the ball with other axle column structure's roll connection, the friction loss has been reduced, the service life has.

Description

Linear bearing with end flange

Technical Field

The utility model relates to a technical field of bearing specifically is a linear bearing who relates to a take tip flange.

Background

In mechanical equipment, particularly when a shaft-shaped structure does axial reciprocating motion, a linear bearing is generally sleeved outside the shaft to avoid friction between the shaft-shaped structure and an installation shell of the shaft-shaped structure, ensure the smoothness and the stability of the operation of the shaft-shaped structure and prolong the service life of the shaft-shaped structure.

The existing linear bearing is arranged on the shell in a tight-fit fixing mode, the requirements on the structural strength and the machining size precision of the shell of the linear bearing are high, the machining cost is increased, and the linear bearing is easy to generate in the using process. In addition, a flange connection mode is adopted, the flange and the shell of the linear bearing are arranged into an integrated structure, and the linear bearing is manufactured by adopting an integrated forming process, so that the problems of complex structure and inconvenient processing of the shell of the linear bearing are caused.

Disclosure of Invention

To the above-mentioned problem that exists among the prior art, it aims at providing a take linear bearing of tip flange now, in order to adopt split type setting with flange and shell, this moment, be provided with round conical flange on the outer wall of the one end of shell, the flange cover is located outside the shell, and the inner wall of flange be with the inclined plane complex of flange compress tightly the face, make when the installation, can install the shell on the casing of other structures through the flange, and spacing through compressing tightly face and flange, make the flange tightly push down the shell, it is more convenient to install, the problem of shell emergence axial displacement in the use has also been prevented simultaneously, and is simple in structure, and convenient for processing, still can install through the flange under the condition that shell size and structural strength require not high, and the processing cost is effectively reduced.

The specific technical scheme is as follows:

a linear bearing with end flanges, characterized by comprising:

the outer shell is arranged in a cylindrical shape and is provided with an inner hole which penetrates through two ends of the outer shell along the axial direction of the outer shell, a circle of conical flange is arranged on the outer wall of one end of the outer shell, and the large end of the flange and the end of the outer shell, which is provided with the flange, are positioned at the same end of the outer shell;

the flange is sleeved outside one end of the shell, which is provided with the flange, and the inner wall of the flange is provided with a pressing surface matched with the inclined surface of the flange;

the retainer is of a cylindrical structure and is arranged in the inner hole, a plurality of sliding groups are arranged on the outer wall of the retainer along the axial direction of the shell, each sliding group comprises a guide slot and a sliding groove, the guide slots and the sliding grooves are arranged along the axial direction of the shell, the guide slots and the sliding grooves of the same group are arranged at intervals, each sliding groove is communicated with the hollow part of the retainer, avoidance grooves are respectively arranged at two ends of the sliding groove on the outer wall of the retainer, and the two avoidance grooves of the same group communicate the two ends of the guide slots and the two ends of the sliding grooves;

the balls are distributed in the sliding grooves and the guide grooves of each sliding group, and can circularly roll in the sliding grooves, the guide grooves and the avoidance grooves in the same group;

and two sealing rings are arranged and are respectively arranged at two ends of the inner hole of the shell and tightly pressed at two ends of the retainer.

The linear bearing with the end flange is characterized in that the retainer is provided with a plurality of oil storage grooves along the axial direction of the shell, and the oil storage grooves are arranged between two adjacent groups of sliding groups and between the sliding grooves and the guide grooves in the same group.

The inner wall of the inner hole of the shell and the two ends of the inner hole are respectively provided with a circle of concave sealing clamping grooves, and the two sealing rings are respectively clamped in the two sealing clamping grooves.

The linear bearing with the end flange is characterized in that a plurality of fixing holes are formed in the flange along the axial direction of the flange, and the fixing holes are distributed in an annular array.

In the above linear bearing with the end flange, each fixing hole is a countersunk hole, and the countersunk end of the fixing hole is located on one side of the large end departing from the flange.

The linear bearing with the end flange is characterized in that the sealing ring comprises a sealing framework and a sealing body, the sealing framework is arranged in an annular mode, the outer side of the sealing framework is clamped in the sealing clamping groove, one end face of the sealing framework abuts against the end portion of the retainer, and the sealing body wraps the other end face of the sealing framework.

In the linear bearing with the end flange, the retainer is made of polyformaldehyde material.

The linear bearing with the end flanges is characterized in that a collecting hole which penetrates through the outer shell along the radial direction of the outer shell is formed in the inner wall of the inner hole of the outer shell and is located at the position corresponding to each avoiding groove, and a hole plug is arranged on the outer wall of the outer shell and is located in each collecting hole.

The linear bearing with the end flange is characterized in that an internal thread is arranged on the inner wall of the end, located on the outer side of the shell, of the collecting hole, an external thread is arranged on the hole plug, and the hole plug is in threaded connection with the collecting hole.

The positive effects of the technical scheme are as follows:

foretell take linear bearing of tip flange, be split type setting with flange and shell, and be provided with the conical flange of round on the outer wall of the one end of shell, be provided with the face that compresses tightly that the inclined plane of flange corresponds on the inner wall of flange, make locate the shell at the flange cover after, the face that compresses tightly can restrict and compress tightly the flange, install the shell on the casing of other structures through the flange promptly, moreover, the steam generator is simple in structure, high durability and convenient installation, and high size and structural strength requirement are not needed, the processing is convenient, the processing cost is reduced, and the installation is more convenient.

Drawings

Fig. 1 is a partial cross-sectional view of an embodiment of a linear bearing with end flanges according to the present invention;

fig. 2 is a cross-sectional view of a preferred embodiment of the present invention.

In the drawings: 1. a housing; 11. an inner bore; 12. a flange; 13. a collection well; 14. a hole plug; 15. sealing the clamping groove; 2. a flange; 21. a compression surface; 22. a fixing hole; 3. a holder; 31. a sliding group; 32. an oil storage tank; 311. a guide groove; 312. a sliding groove; 313. an avoidance groove; 4. a ball bearing; 5. a seal ring; 51. sealing the framework; 52. and a sealing body.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the following embodiments are specifically described with reference to fig. 1 to 2, but the following contents are not intended to limit the present invention.

Fig. 1 is a partial cross-sectional view of an embodiment of a linear bearing with end flanges according to the present invention; fig. 2 is a cross-sectional view of a preferred embodiment of the present invention. As shown in fig. 1 and 2, the present embodiment provides a linear bearing with an end flange, including: the sealing device comprises a shell 1, a flange 2, a retainer 3, a ball 4 and a sealing ring 5. At this moment, shell 1 and flange 2 are split type structure, the dismouting of flange 2 on shell 1 has been realized, thereby shell 1's structure has been simplified, the structure is simpler, it is more convenient to process, in addition, also can avoid originally fixed structural strength and the equal higher operation requirement of machining dimension precision that needs shell 1 through the direct tight fit of shell 1, can also install shell 1 on the casing of other structures through flange 2 under the condition that shell 1 structural strength and machining dimension require all not high, the processing cost is reduced, it is more convenient to install.

Specifically, the shell 1 is the tube-shape setting, and at this moment, the shell 1 has one and runs through the hole 11 at its both ends along its axial, and, set up round conical flange 12 on the outer wall of the one end of shell 1, and the main aspects of flange 12 is located the same one end of shell 1 with the one end that shell 1 was provided with flange 12, makes flange 12 can provide an effort along its axial for shell 1, and, the direction of the effort is along the direction of the tip to the main aspects of flange 12, provides the structure basis for follow-up through flange 2 with the fixed mounting of shell 1 on the casing of other structures.

Specifically, flange 2 cover is located outside shell 1, and flange 2 sets up in the one end that shell 1 is provided with flange 12, at this moment, the inner wall of flange 2 is provided with the inclined plane complex with flange 12 and compresses tightly face 21, make locate the shell 1 back with flange 2 cover, the inclined plane of flange 12 of shell 1 can be compressed tightly to the face 21 on the flange 2, and along with flange 2 along the direction removal of the tip to the main aspects of flange 12, flange 2 displacement is big more, the pressure that compresses tightly face 21 to the inclined plane of flange 12 is big more, thereby firmly compress tightly shell 1 on the casing of other structures, realize the installation of linear bearing on the casing of other structures, moreover, the steam generator is simple in structure, the processing is convenient, and the processing cost is effectively reduced.

Specifically, the retainer 3 is arranged in the inner hole 11 of the shell 1, the retainer 3 is of a cylindrical structure, the retainer 3 is provided with a hollow part which penetrates through two ends of the retainer along the axial direction of the retainer, other shaft-shaped structures can be conveniently inserted into the retainer 3, and conditions are provided for realizing the connection of the linear bearing and other structures. At this moment, a plurality of sliding groups 31 are arranged on the outer wall of the retainer 3 along the axial direction of the shell 1, each sliding group 31 comprises a guide groove 311 and a sliding groove 312, and the guide grooves 311 and the sliding grooves 312 are arranged along the axial direction of the shell 1, so that the guide grooves 311 and the sliding grooves 312 can adapt to axial movement, and the functional characteristics are embodied. And, the guide slot 311 and the sliding slot 312 of the same group are arranged at intervals, and each sliding slot 312 is communicated with the hollow of the retainer 3, so that one side of the ball 4 in the subsequent sliding slot 312 can extend into the hollow of the retainer 3, thereby realizing sliding contact with other shaft-shaped structures and reducing friction loss. Meanwhile, the avoidance grooves 313 are formed in the outer wall of the retainer 3 and located at two ends of the sliding groove 312 respectively, the two avoidance grooves 313 in the same group communicate the two ends of the guide groove 311 and the two ends of the sliding groove 312, preferably, the avoidance grooves 313 are of arc-shaped structures, so that the two avoidance grooves 313 in the same group, the guide groove 311 and the sliding groove 312 form a runway-shaped structure, the subsequent rolling of the balls 4 in the retainer 3 is facilitated, and the structural design is more reasonable.

Specifically, the balls 4 are provided with a plurality of balls 4, the plurality of balls 4 are distributed in the sliding grooves 312 and the guide grooves 311 of each sliding group 31, and the balls 4 can circularly roll in the sliding grooves 312, the guide grooves 311 and the avoidance grooves 313 of the same group, so that when axial displacement occurs between other shaft-shaped structures and the linear bearing, the balls 4 circularly roll in the sliding grooves 312, the guide grooves 311 and the avoidance grooves 313 of the respective sliding groups 31, and one side of each ball 4 extends into the hollow space of the retainer 3 from the sliding groove 312, thereby providing sliding support for other shaft-shaped structures, reducing friction loss and prolonging service life.

Specifically, two sealing rings 5 are arranged, the two sealing rings 5 are respectively arranged at two ends of an inner hole 11 of the shell 1 and are tightly pressed at two ends of the retainer 3, the retainer 3 is limited in the inner hole 11 of the shell 1 through the two sealing rings 5, and meanwhile, other external impurities and the like are prevented from entering a gap between the shell 1 and the retainer 3, so that the protection performance is better, and the structural design is more reasonable.

More specifically, a plurality of oil storage grooves 32 are formed in the retainer 3 along the axial direction of the housing 1, the oil storage grooves 32 are formed between two adjacent sets of sliding groups 31 and between the same set of sliding grooves 312 and the same set of guide grooves 311, so that injected lubricating oil and the like can enter the oil storage grooves 32, the lubricating oil stored in the oil storage grooves 32 continuously provides lubrication for the sliding grooves 312, the guide grooves 311 and the balls 4 in the avoiding grooves 313, friction loss is further reduced, and the structural design is more reasonable.

More specifically, on the inner wall of the inner hole 11 of the shell 1 and at the two ends of the inner hole, sealing grooves 15 with a circle of concave parts are respectively formed, the two sealing rings 5 are respectively clamped in the two sealing grooves 15, namely, the clamping connection of the sealing rings 5 in the shell 1 is realized through the sealing grooves 15, the dismounting is more convenient, and the production, the manufacturing, the maintenance and the maintenance are facilitated.

More specifically, a plurality of fixed orificess 22 have been seted up along its axial on the flange 2, and a plurality of fixed orificess 22 are the annular array and distribute, make when with this linear bearing fixed mounting on the casing of other structures, can be through fastening structure such as threaded fastener with flange 2 fixed mounting on the casing of other structures, not only guaranteed the homogeneity of flange 2 atress, still make flange 2 to the homogeneity of 1 effort of shell, thereby guaranteed the stability and the reliability of this linear bearing installation, structural design is more reasonable.

More specifically, each fixed orifices 22 on the flange 2 is the counter bore, and the counter bore end of fixed orifices 22 is located the one side that deviates from the main aspects of flange 12 for when installing flange 2 on the casing of other structures through fastening structures such as threaded fastener, the tip of fastening structures such as threaded fastener can sink into flange 2 in, the tip of having avoided fastening structures such as threaded fastener to stick out in flange 2 and occupy the problem in great space, structural design is more reasonable.

More specifically, set up sealing washer 5 at the both ends of the hole 11 of shell 1 again including sealed skeleton 51 and seal 52, at this moment, sealed skeleton 51 is the annular setting, make sealed skeleton 51 make things convenient for other axle column structure to insert in holder 3, and simultaneously, sealed skeleton 51's outside card is located in sealed draw-in groove 15, and a terminal surface of sealed skeleton 51 supports and leans on in the tip of holder 3, sealed skeleton 51 and shell 1's sealed draw-in groove 15 has realized the joint and has connected promptly, and also make sealed skeleton 51 can restrict the axial displacement of holder 3, the stability and the reliability of this straight line bearing structure have been guaranteed. In addition, another terminal surface of seal skeleton 51 is gone up the parcel and is had seal 52, has further promoted sealing performance through seal 52, guarantees the clearance between seal shell 1 and the holder 3 that sealing washer 5 can be better, and structural design is more reasonable.

More specifically, the retainer 3 arranged in the inner hole 11 of the shell 1 is made of polyformaldehyde materials, so that the density is high, the heat resistance is good, the surface is smooth, the bending strength and the fatigue resistance strength are high, the wear resistance and the electrical property are excellent, the production and the manufacture are easy, the use in an environment with serious relative sliding on a bearing is facilitated, and the adaptability is high.

More specifically, on the inner wall of the hole 11 of shell 1 and be located each and dodge the position that groove 313 corresponds and all set up one along the radial collection hole 13 that runs through shell 1 of shell 1, this moment, collection hole 13 is located the one end of shell 1 inboard and dodges groove 313 intercommunication, collection hole 13 is located the one end and the external intercommunication in the shell 1 outside, thereby make in the use, the impurity that produces or sealed inefficacy entering because of wearing and tearing can be extruded under the motion of ball 4 in collection hole 13, collect through collection hole 13, do benefit to the later stage user and clear up, avoided impurity to be detained for a long time in sliding group 31 and accelerated friction loss's problem. In addition, on the outer wall of shell 1 and be located each collection hole 13 and all be provided with hole stopper 14, block up collection hole 13 temporarily through hole stopper 14, prevent to cause the leakage of lubricating oil under the condition that need not the clearance, structural design is more reasonable.

More specifically, collect hole 13 and be located the inner wall of the one end in the outside of shell 1 and be provided with the internal thread, be provided with the external screw thread on the stopple 14, stopple 14 and collection hole 13 are threaded connection, have made things convenient for the dismouting of stopple 14 in collection hole 13, make things convenient for the later stage user to clear away the impurity in collecting hole 13, and structural design is more reasonable.

The linear bearing with the end flange provided by the embodiment comprises a shell 1, a flange 2, a retainer 3, balls 4 and a sealing ring 5, wherein the shell 1 and the flange 2 are arranged in a split manner, a circle of conical flange 12 is arranged on the outer wall of one end of the shell 1, and a pressing surface 21 matched with the inclined surface of the flange 12 is arranged on the flange 2, so that after the flange 2 is sleeved on the shell 1, the pressing surface 21 can limit and press the flange 12, the shell 1 is installed on a shell body with other structures through the flange 2, the structure is simple, the installation is convenient, the installation can be still realized under the condition that the requirements on the size and the structural strength of the shell 1 are not high, the processing cost is low, in addition, the retainer 3 is internally provided with the balls 4, the retainer 3 is limited in the shell 1 through the sealing ring 5, and the rolling connection with other shaft-shaped structures is realized through the balls, the friction loss is reduced, and the service life is prolonged.

The above is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, and it should be appreciated by those skilled in the art that various equivalent substitutions and obvious changes made in the specification and drawings should be included within the scope of the present invention.

Claims (9)

1. A linear bearing with an end flange, comprising:

the outer shell is cylindrical and is provided with an inner hole which penetrates through two ends of the outer shell along the axial direction of the outer shell, a circle of conical flange is arranged on the outer wall of one end of the outer shell, and the large end of the flange and the end, provided with the flange, of the outer shell are positioned at the same end of the outer shell;

the flange is sleeved outside one end, provided with the flange, of the shell, and a pressing surface matched with the inclined surface of the flange is arranged on the inner wall of the flange;

the retainer is of a cylindrical structure and is arranged in the inner hole, a plurality of sliding groups are arranged on the outer wall of the retainer along the axial direction of the shell, each sliding group comprises a guide groove and a sliding groove, the guide grooves and the sliding grooves are arranged along the axial direction of the shell, the guide grooves and the sliding grooves in the same group are arranged at intervals, each sliding groove is communicated with the hollow part of the retainer, meanwhile, avoidance grooves are respectively arranged on the outer wall of the retainer and positioned at two ends of the sliding groove, and the avoidance grooves in the same group communicate the two ends of the guide grooves and the two ends of the sliding grooves;

the balls are distributed in the sliding grooves and the guide grooves of each sliding group, and can circularly roll in the sliding grooves, the guide grooves and the avoidance grooves in the same group;

and two sealing rings are arranged on the two ends of the inner hole of the shell and are respectively compressed on the two ends of the retainer.

2. The linear bearing with the end flange according to claim 1, wherein a plurality of oil reservoirs are formed in the upper portion of the retainer along the axial direction of the housing, and the oil reservoirs are formed between two adjacent sets of the sliding groups and between the sliding reservoir and the guide groove in the same set.

3. The linear bearing with the end flange according to claim 1, wherein a circle of concave sealing grooves are respectively formed on the inner wall of the inner hole of the housing and at the two ends of the inner hole, and the two sealing rings are respectively clamped in the two sealing grooves.

4. The linear bearing with an end flange as claimed in claim 1, wherein the flange has a plurality of fixing holes along its axial direction, and the fixing holes are distributed in an annular array.

5. A linear bearing with an end flange according to claim 4, characterised in that each of the fixing holes is a countersunk hole, and the countersunk end of the fixing hole is located on the side facing away from the large end of the flange.

6. The linear bearing with the end flange according to claim 3, wherein the seal ring comprises a seal frame and a seal body, the seal frame is annularly arranged, the outer side of the seal frame is clamped in the seal clamping groove, one end face of the seal frame abuts against the end of the retainer, and the other end face of the seal frame is wrapped with the seal body.

7. A linear bearing with end flanges according to claim 1, characterised in that the cage is of polyoxymethylene material.

8. The linear bearing with the end flange according to claim 1, wherein a collecting hole penetrating the housing along a radial direction of the housing is formed in a position corresponding to each of the avoiding grooves on an inner wall of the inner bore of the housing, and a hole plug is disposed in each of the collecting holes on an outer wall of the housing.

9. The linear bearing with an end flange according to claim 8, wherein an inner thread is provided on an inner wall of the collection hole at an end located outside the housing, an outer thread is provided on the hole plug, and the hole plug and the collection hole are in threaded connection.

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