Two-row ball bearing structure suitable for synchronous rope belt wheel

Abstract

The utility model relates to the technical field of transmission devices, and discloses a double-row ball bearing structure suitable for a synchronous rope belt pulley, which comprises two bearings and a bearing seat sleeved on the two bearings, and the two bearings are oppositely arranged at two ends of the bearing seat; flanges are arranged at the two ends of the outer circumferential face of the bearing seat respectively, the flanges extend out of the outer circumferential face of the bearing seat in the radial direction of the bearing seat, the flanges extend along the edge of the outer circumferential face of the bearing seat and are annular, and the outer circumferential face of the bearing seat and the flanges on the two sides form a groove position used for containing a steel belt. The cross section of the outer circumferential face of the bearing seat is in an arc shape, and the diameter of the outer circumferential face of the bearing seat is gradually reduced from the middle to the two sides. According to the scheme provided by the utility model, the positioning precision of the steel belt can be improved, and the friction is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission devices, in particular to a double-row ball bearing structure suitable for a synchronous rope pulley. Background Art

[0002] The rope pulley assembly of the elevator is an important part of the elevator system, and its design and function are crucial to the safe and stable operation of the elevator.

[0003] In the related art, a steel belt is tensioned on a rope pulley of an elevator rope pulley assembly. When the elevator is lifted or lowered, the steel belt rotates with the rope pulley. However, the steel belt may deviate when rotating with the rope pulley, which may cause friction between the steel belt and both ends of the rope pulley, thereby damaging the steel belt. Utility Model Content

[0004] In order to solve or partially solve the problems existing in the related art, the utility model provides a double-row ball bearing structure suitable for a synchronous rope pulley, which can improve the positioning accuracy of the steel belt and reduce friction.

[0005] The utility model provides a double-row ball bearing structure suitable for a synchronous rope pulley, comprising: two bearings and a bearing seat sleeved on the two bearings, wherein the two bearings are arranged at two ends of the bearing seat opposite to each other;

[0006] Both ends of the outer circumference of the bearing seat are respectively provided with flanges, the flanges extend out of the outer circumference of the bearing seat in the radial direction of the bearing seat, the flanges extend along the edge of the outer circumference of the bearing seat and are annular, and the outer circumference of the bearing seat and the flanges on both sides form a groove for placing a steel belt;

[0007] The outer peripheral surface of the bearing seat is constructed with an arc-shaped cross section, and the diameter of the outer peripheral surface of the bearing seat gradually decreases from the middle to both sides.

[0008] Furthermore, the bearing is a deep groove ball bearing or an angular contact ball bearing.

[0009] Furthermore, the bearing comprises an outer ring, an inner ring and a rolling element, the outer ring and the inner ring clamp the rolling element, and the outer ring of at least one of the two bearings is an integral structure with the bearing seat.

[0010] Furthermore, one end of the inner circumferential surface of the bearing seat forms the outer ring of one of the bearings, and the other end of the inner circumferential surface of the bearing seat is provided with a receiving groove for receiving the outer ring of the other bearing.

[0011] Furthermore, the outer rings of the two bearings are an integral structure with the bearing seat, and the inner rings of the two bearings are an integral structure.

[0012] Furthermore, a groove is provided on the outer peripheral surface of the middle portion of the inner ring.

[0013] Furthermore, the outer rings of the two bearings are an integral structure with the bearing seat, and the inner rings of the two bearings are independent of each other and abut against each other.

[0014] Furthermore, the inner circumferential surfaces of the two inner rings are each provided with an annular groove, and an O-ring is provided in the annular groove.

[0015] Furthermore, end surfaces of the two inner rings facing away from each other are both provided with clamping rings.

[0016] Furthermore, the bearing end surface is provided with a sealing ring for sealing the bearing.

[0017] The technical solution provided by the utility model may include the following beneficial effects: by installing the steel belt in the groove formed by the outer circumferential surface of the bearing seat and the flanges on both sides, the steel belt and the bearing seat rotate synchronously, the outer circumferential surface of the bearing seat is constructed with an arc-shaped cross-section, and the diameter of the outer circumferential surface of the bearing seat gradually decreases from the middle to the two sides, so that the outer circumferential surface of the bearing seat forms a raised arc surface in the middle, and the raised arc surface can guide the position of the steel belt on the bearing seat during rotation, so that the steel belt always has a tendency to be centered on the outer circumferential surface of the bearing seat, so that even if the steel belt is offset, it can be restored to the centered position to prevent excessive friction between the steel belt and the flanges on both sides.

[0018] It should be understood that the above general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0020] Figure 1 It is a structural schematic diagram of a double-row ball bearing structure suitable for a synchronous rope pulley shown in the first embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a double-row ball bearing structure suitable for a synchronous rope pulley shown in the second embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of a double-row ball bearing structure suitable for a synchronous rope pulley shown in the third embodiment of the present utility model;

[0023] Figure 4 It is a structural schematic diagram of a double-row ball bearing structure suitable for a synchronous rope pulley shown in Embodiment 4 of the present utility model.

[0024] Figure numerals: 1-bearing seat, 11-flange, 12-slot, 2-outer ring, 3-inner ring, 4-rolling element, 5-groove, 6-annular groove, 7-O-ring, 8-retaining ring, 9-sealing ring, 10-axle, 20-retaining ring. DETAILED DESCRIPTION

[0025] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0026] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0027] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0029] The technical solution of the embodiment of the utility model is described in detail below with reference to the accompanying drawings.

[0030] Example

[0031] like Figure 1 As shown, the first embodiment of the utility model provides a double-row ball bearing structure suitable for a synchronous rope pulley, including two bearings and a bearing seat 1 sleeved on the two bearings, and the two bearings are arranged at two ends of the bearing seat 1 opposite to each other.

[0032] Flanges 11 are respectively provided at both ends of the outer circumferential surface of the bearing seat 1. The flanges 11 extend out of the outer circumferential surface of the bearing seat 1 in the radial direction of the bearing seat 1. The flanges 11 extend along the edge of the outer circumferential surface of the bearing seat 1 and are annular. The outer circumferential surface of the bearing seat 1 and the flanges 11 on both sides form a groove 12 for placing the steel belt.

[0033] The outer peripheral surface of the bearing seat 1 is constructed to have an arc-shaped cross section, and the diameter of the outer peripheral surface of the bearing seat 1 gradually decreases from the middle to both sides.

[0034] By installing the steel belt in the groove 12 formed by the outer surface of the bearing seat 1 and the flanges 11 on both sides, the steel belt and the bearing seat 1 rotate synchronously, the outer surface of the bearing seat 1 is constructed with an arc-shaped cross-section, and the diameter of the outer surface of the bearing seat 1 gradually decreases from the middle to both sides, so that the outer surface of the bearing seat 1 forms a raised arc surface in the middle. During rotation, the raised arc surface can guide the position of the steel belt on the bearing seat 1, so that the steel belt always has a tendency to be centered on the outer surface of the bearing seat 1, so that even if the steel belt is offset, it can be restored to the center position to prevent excessive friction between the steel belt and the flanges 11 on both sides.

[0035] The two bearings shown in the figure are deep groove ball bearings, which include an outer ring 2, an inner ring 3 and a rolling element 4. The outer ring 2 and the inner ring 3 clamp the rolling element 4. The inner circumference of the bearing seat 1 is provided with a receiving groove for receiving the outer ring 2 of the bearing at both ends. The rolling element 4 is a ball. The bearing is provided with sealing rings 9 for sealing the bearing on both sides of the rolling element 4. The sealing rings 9 prevent the oil inside the bearing from flowing out. A retaining ring 20 is provided between the two inner rings 3.

[0036] Example

[0037] like Figure 2 As shown, the double-row ball bearing structure suitable for synchronous rope pulleys provided in this embodiment is different from the above-mentioned embodiment 1 mainly in that one end of the inner circumference of the bearing seat 1 forms the outer ring of one of the bearings, and the other end of the inner circumference of the bearing seat 1 is provided with a receiving groove for accommodating the outer ring 2 of the other bearing, and the two bearings are angular contact ball bearings.

[0038] Specifically, Figure 2 As shown, the left end of the inner circumference of the bearing seat 1 has an inwardly protruding structure, which is provided with a rolling groove and forms the outer ring of the left bearing, and the rolling body 4 rolls along the rolling groove. Other contents of this embodiment are similar to those of the first embodiment.

[0039] Through two rows of bearings with different structures and the retaining ring 20 corresponding to the inner ring 3 of the bearing, its special load-bearing requirements can be met, that is, it can withstand a larger axial force in one direction during operation. The two bearings form a double-row angular contact ball bearing. The left-side bearing provides a large axial support force and a long bearing time, so it has a long service life and is durable, and has high bearing strength.

[0040] The left bearing is a non-standard bearing, and its rolling element 4 can be selected to have a larger diameter, that is, larger than the rolling element 4 of the right bearing. The force space acted upon by the rib corresponding to the larger rolling element 4 is larger than the force space acted upon by the rib corresponding to the rolling element 4 of the right bearing, thereby meeting the customer's special requirements for a large axial force in one direction of the rope pulley assembly.

[0041] Example

[0042] like Figure 3 As shown, the double-row ball bearing structure suitable for synchronous rope pulleys provided in this embodiment is different from the above-mentioned embodiment 1 mainly in that the outer rings of the two bearings are integrated with the bearing seat 1, the inner rings 3 of the two bearings are also integrated, and the two bearings constitute a double-row angular contact ball bearing structure.

[0043] By combining the two bearings into an integrated structure, the space and weight can be reduced. A large groove 5 is provided between the rolling grooves of the two rows of rolling elements 4 on the inner ring 3, that is, a groove 5 is provided on the outer peripheral surface of the middle part of the inner ring 3, which creates conditions for setting multiple rolling elements 4 and rolling elements 4 with larger ball diameters. A large number of balls or a large ball diameter make the bearing have a large rated load, a large torque and better rotation accuracy.

[0044] Among them, ball loading ports are provided at both ends of the bearing seat 1. The diameter of the locking port on the bearing seat 1 that abuts against the rolling element 4 is 0.1-0.5mm larger than the diameter of the raceway on the inner ring 3. This locking amount can ensure that the plastic deformation of the bearing is small during the assembly process while ensuring that the bearing does not fall off the sleeve, meeting the client's special needs for the rope pulley assembly.

[0045] Example

[0046] like Figure 4 As shown, the double-row ball bearing structure suitable for synchronous rope pulleys provided in this embodiment is different from the above-mentioned embodiment 1 mainly in that the outer rings of the two bearings are integrated with the bearing seat 1, and the inner rings 3 of the two bearings are independent of each other and abut against each other.

[0047] Both inner rings 3 are provided with reserved locking and axial pressing, which makes the bearing easy to assemble and creates conditions for setting multiple balls. The large number of balls makes the bearing have a large rated load, a large torque and better rotation accuracy.

[0048] Among them, the inner circumferences of the two inner rings 3 are each provided with an annular groove 6, and an O-ring 7 is arranged in the annular groove 6. The O-ring 7 can improve the positioning accuracy of the bearing to the wheel shaft 10 and increase the transmitted torque. In addition, the fixed installation of the O-ring 7 can reduce the displacement of the double-row ball bearing, thereby meeting the client's special needs for the rope pulley assembly.

[0049] The end faces of the two inner rings 3 facing away from each other are both provided with a snap ring 8 to further improve the positioning accuracy of the bearing and the axle 10.

[0050] like Figures 1 to 4 As shown, the double-row ball bearing structure of the embodiment of the utility model is provided with a sealing ring 9 on the bearing end surface for sealing the bearing, thereby preventing oil from flowing out.

[0051] In summary, the structure of the first embodiment can meet the basic use requirements of the client for the rope pulley assembly, and the cost is low. The second embodiment can achieve its special load requirements through two rows of bearings with different structures and the retaining ring 20 corresponding to the inner ring 3 of the bearing, thereby meeting the special requirements of the client for the rope pulley assembly. The third embodiment can provide a plurality of spheres and a larger ball diameter to make the bearing have a large rated load, withstand a large torque and have better rotation accuracy, thereby meeting the special requirements of the client for the rope pulley assembly. The fourth embodiment can reduce the displacement of the double-row ball bearing positioned by the O-ring 7 through the fixed installation of the O-ring 7, thereby meeting the special requirements of the client for the rope pulley assembly.

[0052] The scheme of the utility model has been described in detail above with reference to the accompanying drawings. In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the specification are not necessarily required for the utility model. In addition, it can be understood that the steps in the method of the embodiment of the utility model can be adjusted in order, merged and deleted according to actual needs, and the modules in the device of the embodiment of the utility model can be merged, divided and deleted according to actual needs.

[0053] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A double-row ball bearing structure suitable for a synchronous rope pulley, characterized in that: include: Two bearings and a bearing seat sleeved on the two bearings, the two bearings are arranged at two ends of the bearing seat opposite to each other; Both ends of the outer circumference of the bearing seat are respectively provided with flanges, the flanges extend out of the outer circumference of the bearing seat in the radial direction of the bearing seat, the flanges extend along the edge of the outer circumference of the bearing seat and are annular, and the outer circumference of the bearing seat and the flanges on both sides form a groove for placing a steel belt; The outer peripheral surface of the bearing seat is constructed with an arc-shaped cross section, and the diameter of the outer peripheral surface of the bearing seat gradually decreases from the middle to both sides.

2. The double-row ball bearing structure suitable for a synchronous rope pulley according to claim 1, characterized in that: The bearing is a deep groove ball bearing or an angular contact ball bearing.

3. The double-row ball bearing structure suitable for a synchronous rope pulley according to claim 1, characterized in that: The bearing comprises an outer ring, an inner ring and a rolling element. The outer ring and the inner ring clamp the rolling element. The outer ring of at least one of the two bearings is an integral structure with the bearing seat.

4. The double-row ball bearing structure suitable for a synchronous rope pulley according to claim 3, characterized in that: One end of the inner circumferential surface of the bearing seat forms the outer ring of one of the bearings, and the other end of the inner circumferential surface of the bearing seat is provided with a receiving groove for receiving the outer ring of the other bearing.

5. The double-row ball bearing structure suitable for a synchronous rope pulley according to claim 3, characterized in that: The outer rings of the two bearings are an integral structure with the bearing seat, and the inner rings of the two bearings are an integral structure.

6. The double-row ball bearing structure suitable for a synchronous rope pulley according to claim 5, characterized in that: A groove is arranged on the outer peripheral surface of the middle part of the inner ring.

7. The double-row ball bearing structure suitable for a synchronous rope pulley according to claim 3, characterized in that: The outer rings of the two bearings are an integral structure with the bearing seat, and the inner rings of the two bearings are independent of each other and abut against each other.

8. The double-row ball bearing structure suitable for a synchronous rope pulley according to claim 3, characterized in that: The inner circumferential surfaces of the two inner rings are both provided with an annular groove, and an O-ring is arranged in the annular groove.

9. The double-row ball bearing structure suitable for a synchronous rope pulley according to claim 8, characterized in that: The end faces of the two inner rings facing away from each other are both provided with clamping rings.

10. The double-row ball bearing structure suitable for a synchronous rope pulley according to claim 1, characterized in that: The bearing end surface is provided with a sealing ring for sealing the bearing.

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