Slewing bearing with high precision, high rotating speed and long service life
Through the innovative design of circular linear tracks and linear slide structures, the limitations of bearings in high speed and high accuracy are solved, and high precision, high speed, low temperature rise and long life swing support is achieved, suitable for large-size segment applications.
Patent Information
- Application Number
- CN202422929927.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-08-15
- Estimated Expiration
- 2034-11-28
AI Technical Summary
Existing bearings have limitations in terms of high speed and high accuracy, especially in large-size segments, it is difficult to achieve a balance between high speed, high precision and load-bearing capacity. The traditional structure leads to large slewing resistance and high temperature rise.
The circular linear track and multiple sets of linear slider structures are used to replace the inner ring of traditional rolling bearings through rolling elements. Combined with the bending structure and detachable connection design, it achieves high precision, high rigidity and low friction characteristics, reducing processing difficulty and installation accuracy requirements.
It realizes the rotary bearing characteristics of high precision, high speed, low temperature rise and long life, reducing space occupation and weight, while improving stability and maintenance convenience.
Smart Images
Figure CN223227707U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearing equipment, in particular to a high-precision, high-speed and long-life slewing bearing. Background Art
[0002] At present, bearings in the traditional machinery industry are all ball-type or roller-type rolling bearings with complete outer and inner rings. Due to the limitations of the bearings' own volume and the installation platform or support, the bearings need to reserve clearance, and the rotational resistance is large. They cannot achieve long-term high-speed rotation above 60 rpm, and the rotation accuracy is not high.
[0003] At present, it is not possible to achieve high speed, high precision and certain load-bearing capacity on large-size bearings. Utility Model Content
[0004] The utility model aims to solve the deficiencies in the prior art and provides a high-precision, high-speed, and long-life slewing bearing. Based on the high-precision, high-rigidity, high-speed, low-friction, and long-life characteristics of the circular linear track, the utility model realizes the high-precision, high-speed, low-temperature rise, and long-life characteristics of the slewing bearing.
[0005] The technical solution of the utility model to solve the above technical problems is as follows:
[0006] A high-precision, high-speed, and long-life slewing bearing comprises a fixed gear ring, the inner circumference of the fixed gear ring is provided with a circular linear track, the circular linear track is provided with multiple groups of linear sliders, rolling bodies are provided between the linear sliders and the circular linear track, and the linear sliders and the circular linear track are connected through the rolling bodies.
[0007] The beneficial effect of adopting the above technical solution is that, since multiple groups of linear sliders replace the rotary pressure ring, that is, the overall structure of the inner ring of the existing rolling bearing is changed, the contact length between the linear slider and the circular linear track is limited to the circumferential length of the linear slider, so the circumferential accuracy of the circular linear track can be allowed to fluctuate within a certain range, which reduces the processing difficulty of the circular linear track, and also reduces the accuracy requirements of the host platform or support installed with the slewing bearing; a circular linear track is directly processed on the fixed gear ring, and the track has high accuracy and good stability; the number of linear sliders is selected based on the required load-bearing capacity, speed, noise and other requirements, and based on the high precision, high rigidity, high speed, low friction and long life characteristics of the circular linear track, the high precision, high speed, low temperature rise and long life characteristics of the slewing bearing in large size segments can be achieved; and a smaller cross-sectional space and lighter weight can be achieved, which can reduce the overall weight of the matching host.
[0008] Furthermore, each group of the linear sliders includes a slider split part 1 and a slider split part 2 that are connected to each other.
[0009] The beneficial effect of adopting the above technical solution is that the linear slider is designed as a split structure, which enables the linear slider to be installed on the circular linear track.
[0010] Furthermore, the slider body 1 and the slider body 2 are both provided with an axial mounting hole, and the axial mounting hole is used to connect to the rotary turntable of the host.
[0011] The beneficial effect of adopting the above technical solution is that, through the axial mounting hole, the connection between the slider body 1 and the slider body 2 can be achieved, and the connection between the linear slider and the rotary turntable of the host can be achieved.
[0012] Furthermore, the linear slider is connected to the rotary turntable of the host through axial mounting holes and bolts.
[0013] The beneficial effect of adopting the above technical solution is that, through the axial mounting hole and the bolt, the detachable connection between the slider body 1 and the slider body 2 is achieved, and the detachable connection between the linear slider and the rotary turntable of the host is achieved.
[0014] Furthermore, the linear sliding blocks are provided in four groups along the inner circumference of the circular linear track.
[0015] Furthermore, the four groups of linear sliders are evenly distributed along the inner circumference of the circular linear track.
[0016] The beneficial effect of adopting the above technical solution is that the number of linear sliders can be increased, decreased and distributed based on actual needs, and the replacement and maintenance performance is high, and the linear sliders can be quickly replaced.
[0017] Furthermore, the cross-section of the circular linear track is a bent structure, and the linear slider is adapted to the bent structure of the circular linear track.
[0018] The beneficial effect of adopting the above technical solution is that, through the bent structure, the linear slider and the circular linear track are more compatible, the two are not easy to separate, and the stability is higher.
[0019] Furthermore, an oil filling hole is provided on the linear slider, and the oil filling hole is used to supply oil to the rolling element. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic cross-sectional view of the utility model;
[0021] Figure 2 It is a schematic diagram of the overall structure of the utility model.
[0022] Explanation of the reference numerals: 1. Fixed gear ring; 2. Circular linear track; 3. Linear slider; 31. Slider body one; 32. Slider body two; 4. Rolling element; 5. Axial mounting hole; 6. Oil filling hole. DETAILED DESCRIPTION
[0023] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0024] The embodiment of the utility model discloses a high-precision, high-speed and long-life slewing bearing.
[0025] Reference Figure 1 and Figure 2 A high-precision, high-speed, and long-life slewing bearing comprises a fixed gear ring 1, on the inner circumference of which a circular linear track 2 is machined. The hardness of the circular linear track 2 after heat treatment can reach HRC55-62, and the track has high precision and good stability. A plurality of sets of linear sliders 3 are mounted on the circular linear track 2, and rolling bodies 4 are mounted between the linear sliders 3 and the circular linear track 2. The linear sliders 3 are connected to the circular linear track 2 via the rolling bodies 4. The number of linear sliders 3 is selected based on the required load-bearing capacity, speed, noise and other requirements. Based on the high precision, high rigidity, high speed, low friction and long life characteristics of the circular linear track 2, the high precision, high speed, low temperature rise and long life characteristics of the slewing bearing in large-size segments can be achieved.
[0026] The circular linear track 2 has a curved cross-section, and the linear slider 3 matches this curved structure. This curved structure allows the linear slider 3 to better fit the circular linear track 2, making it difficult to separate and providing increased stability. The circular linear track 2 can be machined vertically or tilted to meet different operating requirements.
[0027] An oil filling hole 6 is provided on the linear slider 3 . The oil filling hole 6 is connected to the bending structure between the linear slider 3 and the circular linear track 2 , and supplies oil to the rolling element 4 .
[0028] The rolling element 4 is embedded in the slider to improve the stability of the rolling element 4. The form of the rolling element 4 can be changed to a column type to achieve a higher load-bearing capacity.
[0029] Each group of the linear sliders 3 includes a slider split 1 31 and a slider split 2 32 connected to each other. Through the split structural design of the linear sliders 3 , it is possible to install the linear sliders 3 on the circular linear track 2 .
[0030] Both the first and second slider parts 31 and 32 have an axial mounting hole 5 for connection to the main unit's rotary table. This axial mounting hole 5 allows both the first and second slider parts 31 and 32 to be connected, and the linear slider 3 to be connected to the main unit's rotary table.
[0031] Specifically, the linear slider 3 is connected to the rotary turntable of the host through the axial mounting hole 5 and the bolt, which can realize the detachable connection between the slider split 1 31 and the slider split 2 32, and the detachable connection between the linear slider 3 and the rotary turntable of the host.
[0032] There are four groups of linear sliders 3 installed along the inner circumference of the circular linear track 2, and the four groups of linear sliders 3 are evenly distributed along the inner circumference of the circular linear track 2. Figure 2 As shown, the number of linear slides 3 can be increased, decreased, and distributed based on actual needs, and the linear slides 3 are easy to replace and maintain, and can be quickly replaced.
[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A high-precision, high-speed, long-life slewing bearing, characterized by: The invention comprises a fixed gear ring (1), wherein the inner circumference of the fixed gear ring (1) is provided with a circular linear track (2), the circular linear track (2) is provided with multiple groups of linear sliders (3), rolling bodies (4) are provided between the linear sliders (3) and the circular linear track (2), and the linear sliders (3) and the circular linear track (2) are connected via the rolling bodies (4).
2. The high-precision, high-speed, long-life slewing bearing according to claim 1, characterized in that: Each group of linear sliders (3) comprises a slider split part 1 (31) and a slider split part 2 (32) connected to each other.
3. The high-precision, high-speed, long-life slewing bearing according to claim 2, characterized in that: The slider body 1 (31) and the slider body 2 (32) are both provided with an axial mounting hole (5), and the axial mounting hole (5) is used for connecting with the rotary turntable of the host.
4. The high-precision, high-speed, long-life slewing bearing according to claim 3, characterized in that: The linear slide block (3) is connected to the rotary turntable of the main machine via an axial mounting hole (5) and bolts.
5. The high-precision, high-speed, long-life slewing bearing according to claim 1, characterized in that: The linear sliders (3) are provided in four groups along the inner circumference of the circular linear track (2).
6. The high-precision, high-speed, long-life slewing bearing according to claim 5, characterized in that: The four groups of linear slide blocks (3) are evenly distributed along the inner circumference of the circular linear track (2).
7. The high-precision, high-speed, long-life slewing bearing according to claim 1, characterized in that: The cross section of the circular linear track (2) is a bent structure, and the linear slider (3) is adapted to the bent structure of the circular linear track (2).
8. The high-precision, high-speed, long-life slewing bearing according to claim 1, characterized in that: An oil filling hole (6) is provided on the linear slider (3), and the oil filling hole (6) is used to supply oil to the rolling body (4).