Thrust ball bearing structure with vibration reduction function

Abstract

The utility model discloses a thrust ball bearing structure with vibration reduction, which comprises two coaxially and oppositely arranged ferrules, a retainer is arranged between the two ferrules, a plurality of pockets are uniformly distributed on the retainer in the circumferential direction, a roller is movably arranged in each pocket, and the thrust ball bearing structure is arranged between the two ferrules. The vibration reduction structure is used for relieving and bearing the load when the ferrule is impacted by an external high load, and the limiting structure is used for limiting the displacement of the retainer to prevent the retainer from moving when the radial displacement phenomenon of the retainer occurs. The thrust ball bearing solves the problems that the axial load bearing capacity of a traditional thrust ball bearing structure is low, and abnormal movement occurs when the retainer bears high load impact.

Description

TECHNICAL FIELD

[0001] The utility model relates to thrust ball bearing structure technical field, concretely is a kind of thrust ball bearing structure with vibration damping. BACKGROUND

[0002] In the field of mechanical transmission, thrust ball bearing as commonly used component, undertakes important axial load transmission task, traditional thrust ball bearing structure, it is usually composed of two ferrules and the retainer and rolling element (such as ball or roller) located therebetween, however, this traditional structure has significant defects, on the one hand, its axial load capacity is lower, when mechanical system encounters larger axial force impact, bearing is prone to wear aggravation, shortened life even failure, seriously affect the stable operation of equipment, since thrust ball bearing will bear alternating axial load in actual use, make retainer prone to appear the phenomenon of wobble or damage;On the other hand, when retainer bears high load impact, due to lack of effective damping and limiting measures, retainer is prone to abnormal movement phenomenon, not only can cause the contact state between rolling element and ferrule deterioration, cause noise and vibration, also can cause rolling element to separate from pocket, cause the damage of entire bearing structure, and then increase equipment maintenance cost, reduce production efficiency. SUMMARY

[0003] In view of the prior art deficiency, the utility model provides a kind of thrust ball bearing structure with vibration damping, to solve the problem that traditional thrust ball bearing structure axial load capacity is lower and abnormal movement appears when retainer bears high load impact.

[0004] To achieve the above purpose, the utility model provides a kind of thrust ball bearing structure with vibration damping, including two coaxial and oppositely arranged ferrules, two the retainer is arranged between the ferrule, the retainer is evenly distributed with a plurality of pockets on ring, each the pocket is movably provided with roller, the retainer is provided with the damping structure for slowing down and carrying load when ferrule is impacted by external high load and the limiting structure for limiting the displacement of retainer to prevent the movement of retainer when retainer appears radial displacement phenomenon.

[0005] The technical scheme has the beneficial effects that: the damping structure is specially arranged to slow down and bear the load when the ring is impacted by external high load, which greatly enhances the axial load bearing capacity of the bearing, and when facing high axial load impact, the damping structure can effectively absorb and disperse energy, avoiding the ring from directly bearing all the impact force, thereby greatly improving the axial load bearing capacity of the bearing, enabling the bearing to stably operate under high load conditions, prolonging the service life of the bearing, and reducing the frequency of equipment downtime for maintenance due to bearing problems; the limiting structure provides reliable guarantee for the stable operation of the retainer, and when the retainer is radially displaced, the limiting structure can timely play a role to limit the displacement of the retainer, prevent the retainer from moving, and ensure that the retainer is always in the correct position, so that the rolling element can normally move in the pocket, maintain good contact between the rolling element and the ring, reduce noise and vibration, avoid the risk of the rolling element leaving the pocket, and further improve the stability and reliability of the bearing operation, and improve the precision and efficiency of the mechanical system operation.

[0006] The utility model further provides: The retainer left side wall and right side wall on corresponding one side position of each pocket are equipped with damping hole, the damping structure includes a plurality of damping steel ball, a plurality of The damping steel ball and a plurality of damping hole one to one and each damping steel ball is movably arranged in the corresponding damping hole, and each damping steel ball is partially arranged in the damping hole opening and is in contact with the inner wall of the adjacent ring.

[0007] The technical scheme has the beneficial effects that: the damping structure is specially arranged to slow down and bear the load when the ring is impacted by external high load, which greatly enhances the axial load bearing capacity of the bearing, and when facing high axial load impact, the damping structure can effectively absorb and disperse energy, avoiding the ring from directly bearing all the impact force, thereby greatly improving the axial load bearing capacity of the bearing, enabling the bearing to stably operate under high load conditions, prolonging the service life of the bearing, and reducing the frequency of equipment downtime for maintenance due to bearing problems; the limiting structure provides reliable guarantee for the stable operation of the retainer, and when the retainer is radially displaced, the limiting structure can timely play a role to limit the displacement of the retainer, prevent the retainer from moving, and ensure that the retainer is always in the correct position, so that the rolling element can normally move in the pocket, maintain good contact between the rolling element and the ring, reduce noise and vibration, avoid the risk of the rolling element leaving the pocket, and further improve the stability and reliability of the bearing operation, and improve the precision and efficiency of the mechanical system operation.

[0008] The utility model further sets up: the vibration damping steel ball diameter is less than the roller diameter setting, the vibration damping hole diameter and vibration damping steel ball diameter are adapted to set.

[0009] The technical scheme has the beneficial effects that: in the above technical scheme, the vibration damping steel ball diameter is designed to be less than the roller diameter, and the vibration damping hole diameter is adapted to the vibration damping steel ball diameter, thereby further optimizing the damping effect; when the vibration damping steel balls with smaller diameter move in the vibration damping holes, the vibration damping steel balls have higher flexibility and response speed; when the sleeve ring is impacted, the vibration damping steel balls can roll and displace more quickly, thereby effectively and timely absorbing and dispersing the impact force; the adaptation of the vibration damping hole diameter to the vibration damping steel ball diameter ensures the movement stability of the vibration damping steel balls in the holes, avoids the shaking or jamming phenomenon, and guarantees the continuous and efficient operation of the damping and buffering system, thereby providing more reliable damping protection for the bearing.

[0010] The utility model further sets up: two vibration damping holes corresponding to each said pocket hole are a group, and each vibration damping hole on the left side wall of the retainer is staggered with the vibration damping holes of the same group on the right side wall of the retainer.

[0011] The technical scheme has the beneficial effects that: in the above technical scheme, the vibration damping steel ball diameter is designed to be less than the roller diameter, and the vibration damping hole diameter is adapted to the vibration damping steel ball diameter, thereby further optimizing the damping effect; when the vibration damping steel balls with smaller diameter move in the vibration damping holes, the vibration damping steel balls have higher flexibility and response speed; when the sleeve ring is impacted, the vibration damping steel balls can roll and displace more quickly, thereby effectively and timely absorbing and dispersing the impact force; the adaptation of the vibration damping hole diameter to the vibration damping steel ball diameter ensures the movement stability of the vibration damping steel balls in the holes, avoids the shaking or jamming phenomenon, and guarantees the continuous and efficient operation of the damping and buffering system, thereby providing more reliable damping protection for the bearing.

[0012] The utility model further sets up: the limiting structure includes the limiting ring which is ringed and arranged on the inner peripheral wall and the outer peripheral wall of the retainer, a plurality of convex ribs are uniformly distributed on the outer peripheral wall of the limiting ring, the plurality of convex ribs on the limiting ring on the outer peripheral wall of the retainer are arranged to extend away from the sleeve hole direction, the plurality of convex ribs on the limiting ring on the inner peripheral wall of the retainer are arranged to extend towards the sleeve hole direction, and the plurality of convex ribs on the two limiting rings are one-to-one corresponding and staggered.

[0013] The beneficial effects of the above technical scheme are as follows: the limit ring arranged on the inner circumferential wall and the outer circumferential wall of the retainer and the unique layout of the protruding ribs thereof construct an extremely effective limiting system; when the retainer has a tendency of radial displacement during operation, the protruding ribs on the limit ring of the outer circumferential wall extending away from the direction of the shaft hole of the sleeve ring and the protruding ribs on the limit ring of the inner circumferential wall extending towards the direction of the shaft hole of the sleeve ring and staggered in position can simultaneously and accurately block the displacement of the retainer from the inside and outside; compared with a single direction or non-staggered limiting design, the bidirectional and staggered limiting manner greatly improves the accuracy and effectiveness of the displacement limitation of the retainer, effectively prevents the retainer from moving in the radial direction, ensures that the retainer is always in the correct position and maintains the stability of the internal structure of the bearing; that is, the protruding ribs on the limit ring of the outer circumferential wall of the retainer can be in contact with the outer wall or the inner wall of the external tool to limit the displacement of the retainer when the retainer has a tendency of radial displacement, and the protruding ribs on the limit ring of the inner circumferential wall of the retainer can be in contact with the outer circumferential wall of the external shaft workpiece to limit the displacement of the retainer when the retainer has a tendency of radial displacement; the staggered arrangement of the protruding ribs on the limit ring optimizes the transmission path of the internal force of the bearing; when bearing a load, especially in complex dynamic load conditions, the staggered protruding ribs can more evenly disperse the stress borne by the retainer to the sleeve ring; for example, when the bearing is subjected to a partial load from a certain direction, the protruding ribs on one side of the limit ring first bear part of the stress and then transmit the stress to the protruding ribs on the other side through the staggered structure, and then the stress is evenly transmitted to the sleeve ring, thereby avoiding stress concentration in a local area. This not only enhances the structural strength of the retainer itself, but also makes the stress borne by the sleeve ring more uniform, reduces the local wear of the sleeve ring, and improves the load-carrying capacity and service life of the entire bearing.

[0014] The utility model further sets up: adjacent the protruding rib and limit ring outer circumferential wall between smooth arc surface connection and form has connecting arc face.

[0015] The beneficial effects of the above technical scheme are as follows: the connecting arc face formed by the smooth arc surface connection between the adjacent protruding ribs and the outer circumferential wall of the limit ring greatly improves the friction condition during the operation of the bearing; during the relative rotation of the retainer and the sleeve ring, the connecting arc face can effectively reduce the local stress concentration caused by the contact between the protruding ribs and the surrounding components, and avoid scratching and wear caused by sharp corners; at the same time, the design of the connecting arc face optimizes the mechanical properties of the limiting structure; when the bearing bears a load, the connecting arc face can more evenly disperse the stress, thereby avoiding excessive concentration of stress at the connection between the protruding ribs and the limit ring. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional view of the utility model;

[0017] Figure 2 It is a side view of the utility model;

[0018] Figure 3The utility model discloses a cage and linkage structure's three-dimensional view for the utility model. DETAILED DESCRIPTION

[0019] The utility model provides a kind of thrust ball bearing structure with damping, including two coaxial and oppositely arranged sleeve ring 1, the cage 2 is provided between two sleeve ring 1, the cage 2 is uniformly distributed with a plurality of pockets 21 around, each pocket 21 is movably provided with roller 22, damping structure for slowing down and carrying load when sleeve ring 1 is impacted by external high load and limiting structure for limiting cage 2 displacement to prevent cage 2 from moving when cage 2 appears radial displacement phenomenon are provided on the cage 2, damping hole 23 is set on the left side wall and right side wall of the cage 2 corresponding to the side position of each pocket 21, the damping structure includes a plurality of damping steel ball 24, a plurality of damping steel ball 24 and a plurality of damping hole 23 one-to-one correspond and each damping steel ball 24 is movably arranged in respective corresponding damping hole 23, each damping steel ball 24 is locally arranged and contacted with the inner peripheral wall of adjacent sleeve ring 1 and is arranged with the clearance of adjacent sleeve ring 1, the diameter of damping steel ball 24 is less than the diameter of roller 22, the diameter of damping hole 23 is adapted to the diameter of damping steel ball 24, two damping holes 23 corresponding to each pocket 21 form a group, each damping hole 23 on the left side wall of the cage 2 is staggered with the position of the damping hole 23 of the same group on the right side wall of the cage 2, the limiting structure includes limiting ring 3, which is annularly arranged on the inner peripheral wall and the outer peripheral wall of the cage 2, a plurality of ribs 31 are annularly arranged on the outer peripheral wall of the limiting ring 3, a plurality of ribs 31 on the limiting ring 3 on the outer peripheral wall of the cage 2 are arranged in the direction away from the shaft hole of the sleeve ring 1, a plurality of ribs 31 on the limiting ring 3 on the inner peripheral wall of the cage 2 are arranged in the direction towards the shaft hole of the sleeve ring 1, a plurality of ribs 31 on two limiting rings 3 correspond one by one and are arranged in staggered positions, adjacent ribs 31 and limiting ring 3 outer peripheral wall are connected in smooth arc surface and form connecting arc surface 32.

[0020] The basic principle and main features of the utility model are shown and described above, and the advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above examples. The above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements. These changes and improvements fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A thrust ball bearing arrangement with damping, characterized in that: The application relates to a bearing assembly, which comprises two coaxial and oppositely arranged ferrules, a retainer arranged between the two ferrules, a plurality of pockets uniformly distributed on the retainer, rollers movably arranged in the pockets, a damping structure arranged on the retainer for damping and bearing load when the ferrule is impacted by external high load, and a limiting structure arranged on the retainer for limiting the displacement of the retainer to prevent the retainer from moving when the retainer is displaced radially.

2. The thrust ball bearing structure with damping according to claim 1, characterized in that: Damping holes are formed on the left and right side walls of the retainer at positions corresponding to one side of each pocket, the damping structure comprises a plurality of damping steel balls, the damping steel balls are in one-to-one correspondence with the damping holes, each damping steel ball is movably arranged in the corresponding damping hole, each damping steel ball partially penetrates the opening of the damping hole and is in contact with the inner wall of the adjacent ferrule, and the rollers partially penetrate the pockets and are in gap cooperation with the inner wall of the adjacent ferrule.

3. The thrust ball bearing structure with damping according to claim 2, characterized in that: The diameter of the damping steel ball is smaller than that of the roller, and the diameter of the damping hole is matched with the diameter of the damping steel ball.

4. The thrust ball bearing structure with damping according to claim 2, characterized in that: The two damping holes corresponding to each pocket form a group, and each damping hole on the left side wall of the retainer is staggered with the damping holes of the same group on the right side wall of the retainer.

5. The thrust ball bearing structure with damping according to claim 1, characterized in that: The limiting structure comprises a limiting ring arranged on the inner and outer walls of the retainer, a plurality of convex ribs are uniformly distributed on the outer wall of the limiting ring, the convex ribs on the outer wall of the limiting ring on the outer wall of the retainer extend away from the direction of the ferrule shaft hole, the convex ribs on the inner wall of the limiting ring on the inner wall of the retainer extend towards the direction of the ferrule shaft hole, the convex ribs on the two limiting rings are in one-to-one correspondence and are staggered in position.

6. The thrust ball bearing structure with damping according to claim 5, characterized in that: The adjacent convex ribs and the outer wall of the limiting ring are connected in smooth arc surface and form a connecting arc surface.

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