Joint bearing and joint bearing mechanism in threaded connection
The threaded joint bearing design solves the problems of difficult assembly and insufficient load-bearing capacity of large-size joint bearings, achieves convenient assembly and high load-bearing capacity, and simplifies the production process.
Patent Information
- Application Number
- CN202422400221.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-09-30
AI Technical Summary
Existing spherical plain bearings have the problems of difficult assembly, complicated production and assembly processes, and insufficient load-bearing capacity during large-scale assembly.
The outer ring and the inner ring are screwed together through the external thread and the internal thread by adopting the threaded connection method to form a complete outer ring. The outer ring is composed of two half outer rings and can be processed independently. Combined with the design of the bearing seat, stable installation can be achieved.
It realizes convenient assembly and disassembly of large-size spherical plain bearings, reduces the difficulty of production and assembly, improves the load-bearing capacity, and eliminates the need for machining notches, thereby improving assembly stability and sealing effect.
Smart Images
Figure CN223424448U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of joint bearings, in particular to a joint bearing and a joint bearing mechanism connected by threads. Background Art
[0002] Spherical plain bearings are a type of spherical sliding bearings, whose structure mainly consists of an inner ring with an outer spherical surface and an outer ring with an inner spherical surface. Figure 1 、 Figure 2 The figure shows a traditional spherical plain bearing. It is generally used for low-speed swinging motion, but can also tilt within a certain angle range. Existing spherical plain bearings come in various configurations: extruded, notched, and split. Split types are further categorized as radially split or axially split. Radial splits are secured with bolts, while axial splits are secured with steel rings or bolts.
[0003] Currently, extruded spherical plain bearings can only be produced in small and medium sizes, as large-size extrusion requires more sophisticated equipment and tooling. Furthermore, extrusion requires dimensional control of the extruded inner surface, which is quite challenging. The production and assembly of split spherical plain bearings is complex, requiring alignment pins and multiple disassembly and assembly. Notched spherical plain bearings require machining of the notch, which reduces their load-bearing capacity.
[0004] Therefore, how to achieve the assembly difficulty of large-size spherical plain bearings, while improving the convenience of spherical plain bearings in the production, processing and assembly process and ensuring good load-bearing capacity is one of the difficulties in the current spherical plain bearing manufacturing. Utility Model Content
[0005] The utility model aims to provide a threaded joint bearing to solve the above-mentioned technical problems.
[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is: a threaded joint bearing, comprising an outer ring and an inner ring movably installed in the outer ring, the outer ring comprising two coaxial and opposite half outer rings, one of the half outer rings being provided with an external thread, and the other half outer ring being provided with an internal thread, and the two half outer rings being fixedly connected to form a complete outer ring by screwing the external thread and the internal thread together.
[0007] Preferably, the spherical plain bearing is a steel-on-steel spherical plain bearing, with spherical contact between the outer ring and the inner ring.
[0008] Preferably, the spherical plain bearing is a self-lubricating spherical plain bearing, a bushing is provided between the outer ring and the inner ring, and spherical contact is formed between the outer ring and the bushing, and between the inner ring and the bushing.
[0009] Preferably, the outer side walls of the two half outer rings are plane with smooth transition, and the inner side walls of the two half outer rings are arc with smooth transition.
[0010] Preferably, the external thread and the internal thread are fine threads, and the number of thread turns of the fine thread is at least one.
[0011] Preferably, the diameter of the outer ring is not less than 15 mm and the width is not less than 8 mm.
[0012] The utility model further provides a joint bearing mechanism, comprising any of the above-mentioned joint bearings and a bearing seat connected by threads, wherein the joint bearing is mounted on the bearing seat.
[0013] In this embodiment, bolts and nuts are also included. The bearing seat includes two bearing half seats opposite to each other on the left and right. Semicircular stepped slots are respectively provided on opposite sides of the two bearing half seats. The two bearing half seats are locked and connected by bolts and nuts so that the two stepped slots are close to form a complete circular stepped slot, and the joint bearing is installed at the stepped slot.
[0014] Preferably, the half outer ring with external threads is the lower half outer ring, and the half outer ring with internal threads is the upper half outer ring. The lower half outer ring is clamped and fixed inside the circular stepped slot, and the upper half outer ring is located outside the circular stepped slot.
[0015] The utility model has the following beneficial effects:
[0016] The utility model includes an outer ring and an inner ring movably installed in the outer ring. The outer ring includes two coaxial and opposite half outer rings, one of the half outer rings is provided with an external thread, and the other half outer ring is provided with an internal thread. The external thread and the internal thread are screwed together to achieve fixed connection between the two half outer rings to form a complete outer ring. A complete outer ring is formed by threading the two half outer rings, and the two half outer rings can be processed independently. Compared with traditional split-type spherical bearings, the production, assembly and disassembly processes of the spherical bearings of the utility model are more convenient and quick, reducing the number of disassembly and assembly times in the processing process. Compared with traditional extrusion-type spherical bearings, the assembly difficulty of the spherical bearings of the utility model is low, and large-sized bearing assembly can be realized. Compared with traditional notch-type spherical bearings, the spherical bearings of the utility model do not require processing notches and have higher load-bearing capacity. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a cross-sectional view of a steel-on-steel spherical plain bearing in the prior art.
[0018] Figure 2 It is a cross-sectional view of a self-lubricating spherical plain bearing in the prior art.
[0019] Figure 3 It is a schematic diagram of the assembly of the spherical bearing of Example 1 of the present utility model.
[0020] Figure 4 It is an exploded schematic diagram of the spherical bearing of Example 1 of the present utility model.
[0021] Figure 5 It is a cross-sectional view of the spherical bearing of Example 1 of the present utility model.
[0022] Figure 6 It is a schematic assembly diagram of the joint bearing mechanism of Example 1 of the present utility model.
[0023] Figure 7 It is a cross-sectional view of the spherical bearing mechanism of Example 1 of the present utility model.
[0024] Figure 8 It is a structural schematic diagram of the bearing seat of Example 1 of the present utility model.
[0025] Figure 9 It is an exploded schematic diagram of the spherical bearing of Example 2 of the present utility model.
[0026] Figure 10 It is a cross-sectional view of the spherical bearing of Example 2 of the present utility model.
[0027] Figure annotation:
[0028] Existing technology part: 1' outer ring, 2' inner ring, 3' bushing;
[0029] Parts of the utility model: 1 outer ring, 11 upper outer ring, 12 lower outer ring, 13 internal thread, 14 external thread, 2 inner ring, 3 bushing, 4 bearing seat, 5 circular stepped slot, 6 bolts, 7 nuts. DETAILED DESCRIPTION
[0030] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.
[0031] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0032] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integrally connected;It can be mechanical connection, or electrical connection;It can be directly connected, or indirectly connected through intermediate medium.
[0033] Embodiment 1.
[0034] Referring to Figure 1-8 As shown in the utility model, as an embodiment of the utility model, a threaded joint bearing is provided, comprising an outer ring 1 and an inner ring 2 movably installed in the outer ring 1, the outer ring 1 comprises two coaxial and opposite half outer rings 1, one of the half outer rings 1 is provided with an external thread 14, and the other half outer ring 1 is provided with an internal thread 13, the external thread 14 and the internal thread 13 are screwed together to realize the fixed connection of the two half outer rings 1 to form a complete outer ring 1, the outer ring 1 is formed by the threaded connection of the two half outer rings 1, the two half outer rings 1 can be independently machined, compared with the traditional split type joint bearing, the production, assembly and disassembly process of the joint bearing of the utility model is more convenient and fast, the disassembly frequency in the machining process is reduced, compared with the traditional extrusion type joint bearing, the assembly difficulty of the joint bearing of the utility model is low, and large size bearing assembly can be realized, compared with the traditional gap type joint bearing, the joint bearing of the utility model does not need to be machined, and the carrying capacity is higher.
[0035] In this embodiment, the joint bearing is a steel-on-steel joint bearing, the outer ring 1 and the inner ring 2 are in spherical surface contact, the outer side wall of the two half outer rings 1 is a flat smooth transition, and the inner side wall of the two half outer rings 1 is an arc smooth transition, so as to ensure the assembly and working precision.
[0036] In this embodiment, the diameter of the outer ring 1 is not less than 15mm, the width is not less than 8mm, the external thread 14 and the internal thread 13 are fine threads, the number of threads of the fine thread is at least one, this setting makes the number of threads of the outer ring 1 more, so that the connection and assembly of the outer ring 1 are more stable and reliable. The advantage of fine thread is more conducive to self-locking, anti-loose, more teeth, can prevent leakage, so as to achieve the effect of sealing, and can provide sufficient fixing force.
[0037] Referring to Figure 6-8As shown, the present invention further provides a spherical joint bearing mechanism, comprising the spherical joint bearing and the bearing seat 4 threadedly connected as described in the above embodiment, wherein the spherical joint bearing is mounted on the bearing seat 4. Specifically, it further comprises a bolt 6 and a nut 7. The bearing seat 4 comprises two left and right opposing bearing halves, and the opposite sides of the two bearing halves are respectively provided with semicircular stepped slots. The two bearing halves are locked and connected by the bolt 6 and the nut 7 so that the two stepped slots are close to form a complete circular stepped slot 5, and the spherical joint bearing is mounted in the stepped slot.
[0038] Among them, the half outer ring 1 with the external thread 14 is the lower half outer ring 12, and the half outer ring 1 with the internal thread 13 is the upper half outer ring 11, so that the height of the outer side wall of the lower half outer ring 12 is greater than the height of the upper half outer ring 11. Therefore, the lower half outer ring 12 is clamped and fixed inside the circular stepped slot 5, and the upper half outer ring 11 is located outside the circular stepped slot 5, thereby further improving the assembly stability.
[0039] The assembly and disassembly process of the spherical bearing mechanism of this embodiment is as follows:
[0040] Assembly process: First, install the lower outer ring 12 on the circular stepped groove hole 5 of the two left and right bearing half seats. Then place the inner ring 2 inside the lower outer ring 12. Lock the bearing seat 4 with bolts 6 and nuts 7, so that the lower outer ring 12 is fixed inside the circular stepped groove hole 5. Then screw the upper outer ring 11 on the lower outer ring 12 to complete the assembly. The installation operation is more convenient and quick.
[0041] Disassembly process: Unscrew the upper outer ring 11 from the lower outer ring 12 to inspect, maintain, or replace the bearing mechanism. The disassembly operation is more convenient and quick, and is easy to maintain.
[0042] Example 2: For the sake of brevity, this example mainly describes the differences from Example 1.
[0043] See Figure 9 and 10 As shown, the utility model provides another threaded joint bearing, which is a self-lubricating joint bearing. A bushing 3 is provided between the outer ring 1 and the inner ring 2. Spherical contact is formed between the outer ring 1 and the bushing 3, and between the inner ring 2 and the bushing 3, thereby achieving the purpose of self-lubrication.
[0044] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims shall fall within the scope of protection of the present invention.
Claims
1. A spherical plain bearing with threaded connection, characterized in that: It includes an outer ring and an inner ring movably installed in the outer ring. The outer ring includes two coaxial and opposite half outer rings, one of which is provided with an external thread, and the other half is provided with an internal thread. The external thread and the internal thread are screwed together to achieve a fixed connection between the two half outer rings to form a complete outer ring.
2. The threaded spherical plain bearing according to claim 1, characterized in that: The spherical plain bearing is a steel-on-steel spherical plain bearing with spherical contact between the outer ring and the inner ring.
3. The threaded spherical plain bearing according to claim 1, characterized in that: The spherical plain bearing is a self-lubricating spherical plain bearing. A bushing is provided between the outer ring and the inner ring. There is spherical contact between the outer ring and the bushing, and between the inner ring and the bushing.
4. The threaded spherical plain bearing according to claim 1, characterized in that: The outer side walls of the two semi-outer rings are plane with smooth transition, and the inner side walls of the two semi-outer rings are arc with smooth transition.
5. The threaded spherical plain bearing according to claim 1, characterized in that: The external thread and the internal thread are fine threads, and the number of thread turns of the fine thread is at least one turn.
6. The threaded spherical plain bearing according to claim 1, characterized in that: The diameter of the outer ring shall not be less than 15mm and the width shall not be less than 8mm.
7. A joint bearing mechanism, characterized in that: The invention comprises a spherical plain bearing and a bearing seat with threaded connection as described in any one of claims 1 to 6, wherein the spherical plain bearing is mounted on the bearing seat.
8. The spherical bearing mechanism according to claim 7, characterized in that: It also includes bolts and nuts. The bearing seat includes two bearing half seats opposite to each other on the left and right. Semicircular stepped slots are respectively provided on the opposite sides of the two bearing half seats. The two bearing half seats are locked and connected by bolts and nuts so that the two stepped slots are close to form a complete circular stepped slot, and the joint bearing is installed at the stepped slot.
9. The spherical bearing mechanism according to claim 8, characterized in that: The half outer ring with external thread is the lower half outer ring, and the half outer ring with internal thread is the upper half outer ring. The lower half outer ring is clamped and fixed inside the circular stepped slot, and the upper half outer ring is located outside the circular stepped slot.