Tilting pad bearing with adjustable central position
By introducing components such as tiltable tiles and adjustment sleeves into the bearings, flexible adjustment of the bearing center position is achieved, and the problems of difficulty and quality control risks of bearing center position adjustment in the prior art are solved, and the efficiency of the main machine and production simplicity are improved.
Patent Information
- Application Number
- CN202420632131.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-03-29
AI Technical Summary
The prior art has difficulty in realizing the bearing center position and quality control risks, especially in large-size shaft systems and multi-stage compressors, which are difficult to adjust the bearing center position due to machining errors, which affects the efficiency of the main machine.
Design a tiltable tilt bearing with adjustable center position. By setting tiltable tilt blocks, adjustment sleeves, positioning pins, oil injection channels and fixing components in the bearing body to adjust the center position of the bearing, the inner and outer circle centers of the positioning pins The eccentricity distance can be adjusted within the range of 0.1mm to 0.8mm.
It effectively solves the difficulty of adjusting the bearing center position, improves the operating efficiency of the main machine, simplifies the production process, reduces the risk of quality control, and reduces the processing workload.
Smart Images
Figure CN222163247U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tilting pad bearings, in particular to a tilting pad bearing with an adjustable center position. Background Art
[0002] In the actual application of sliding bearings, the bearing center needs to be adjusted. This situation mainly occurs in the following types of hosts. One type is the host with large-size shaft system, such as heavy-duty gas turbines, large steam turbines, large single-shaft compressors, etc. Since the rotor is usually lower than the center position of the bearing during operation, the rotor center and the seal and flow structure on the shaft system are not concentric. If the degree of non-concentricity is large, it will affect the efficiency of the host. For this reason, the center position of the bearing needs to be deliberately lifted upward to make the rotor center and other seals on the shaft system as concentric as possible, which is conducive to improving the operating efficiency of the host. The other type is a large-size gear multi-stage compressor. This type of machine has multiple rotors and its gears are meshed at one time. Due to factors such as processing errors, it is very difficult to mesh all the gears at once. At this time, the center position of the bearing also needs to be adjusted to find the most ideal position for the best gear meshing.
[0003] In response to the requirements for bearing center adjustment, the current measure one is to process the inner and outer rings of the bearing body to be non-concentric, and the other measure two is to add several pads on the outer circle of the bearing body, and then use gaskets to adjust the height difference of the pads. The main problem of the current measure one, which is to process the outer and inner rings of the bearing body to be non-concentric, is that it increases the difficulty of product realization. Each time a new bearing is produced, the bearing body must be processed, which increases the workload and the risk of quality control. For measure two, adding multiple adjustment blocks, due to the large number of parts, quality control is difficult, and the same problem of measure one also exists, which increases the processing workload.
[0004] In view of the above problems, a tilting pad bearing with adjustable center position is proposed. Utility Model Content
[0005] The utility model aims to provide a tilting pad bearing with adjustable center position, which solves the problem of inconvenient bearing center adjustment in the background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tilting pad bearing with adjustable center position, comprising a bearing body, four tilting pads are arranged in the bearing body, an adjusting sleeve is arranged outside the bearing body, an oil filling hole is penetrated through the outside of the adjusting sleeve and opened, an oil filling channel is opened outside the bearing body, fixing components are arranged on both sides of the bearing body, and pin holes are evenly distributed on the front side of the outside of the adjusting sleeve.
[0007] By adopting the above technical solution, the main parts are composed of a bearing body, a tilting pad, an adjusting sleeve, a locating pin, and a bearing cover, and the adjusting sleeve is a part with non-concentric inner and outer circles.
[0008] As a further description of the above technical solution: the fixing component includes a socket, and multiple sockets are arranged on both sides of the bearing body. The inner thread of the socket is connected with a screw, and bearing covers are arranged on the outside of the multiple sockets. Through holes are penetrated and opened on both sides of the bearing cover, and the outside of the screws penetrates the through holes.
[0009] By adopting the above technical solution, the bearing cover can be fixed on both sides of the bearing body through the fixing assembly.
[0010] As a further description of the above technical solution: a positioning pin is arranged in the pin hole, and the outer portion of the positioning pin is slidably connected to the inner wall of the pin hole.
[0011] By adopting the above technical solution, the positioning pin can be installed. The eccentricity e of the inner and outer circle centers can be determined according to the adjustment range of the main machine to the bearing center position, usually between 0.1mm and 0.8mm.
[0012] As a further description of the above technical solution: the oil injection hole corresponds to the position of the oil injection channel.
[0013] By adopting the above technical solution, it is convenient for oil to enter through the oil injection channel and the oil injection hole.
[0014] As a further description of the above technical solution: the bearing covers are arranged on both sides of the bearing body.
[0015] By adopting the above technical solution, the bearing cover can be easily installed.
[0016] As a further description of the above technical solution: a base is arranged outside the adjusting sleeve.
[0017] By adopting the above technical solution, it is convenient to install the machine base.
[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0019] The utility model provides a tilting pad bearing with adjustable center position. Firstly, the tilting pad, the adjusting sleeve, the oil injection channel, the pin hole, the through hole, the plug hole and the positioning pin work together. According to the needs, the positioning pins are sequentially installed in the pin holes on the outer circle of the adjusting sleeve, so that the center position of the bearing can be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0021] Figure 2It is a cross-sectional view of the overall structure of the utility model;
[0022] Figure 3 It is a structural sectional view of the utility model;
[0023] Figure 4 It is a side sectional view of the utility model;
[0024] Figure 5 This is a schematic diagram of the structure of the adjustment sleeve of the utility model;
[0025] Figure 6 It is a schematic diagram of the eccentricity of the utility model.
[0026] In the figure: 1. bearing body; 2. tilting pad; 3. adjusting sleeve; 4. positioning pin; 5. bearing cover; 6. socket; 7. oil filling hole; 8. oil filling channel; 9. machine base; 10. pin hole; 11. through hole; 12. screw. DETAILED DESCRIPTION
[0027] The following will refer to the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] In order to further understand the content of the utility model, the utility model is described in detail with reference to the accompanying drawings.
[0029] Reference Figure 1 , Figure 3 and Figure 5 The utility model discloses a tilting pad bearing with adjustable center position, comprising a bearing body 1, four tilting pads 2 are arranged in the bearing body 1, and the four tilting pads 2 have the effect of facilitating adjustment. An adjusting sleeve 3 is arranged outside the bearing body 1, and an oil filling hole 7 is penetrated and opened on the outside of the adjusting sleeve 3. The adjusting sleeve 3 is a part with non-concentric inner and outer circles, and a plurality of pin holes 10 are arranged on its outer circle. An oil filling channel 8 is opened on the outside of the bearing body 1 for convenient oil filling. Fixed components are arranged on both sides of the bearing body 1, and evenly distributed pin holes 10 are opened on the front side of the outside of the adjusting sleeve 3. The pin holes 10 are convenient for installing the positioning pins 4.
[0030] Reference Figure 4 The fixing assembly includes a socket 6, and multiple sockets 6 are arranged on both sides of the bearing body 1. The socket 6 is threaded with a screw 12. A bearing cover 5 is arranged on the outside of the multiple sockets 6. The bearing cover 5 has through holes 11 on both sides. The screws 12 pass through the through holes 11. The bearing cover 5 can be fixed to both sides of the bearing body 1 through the fixing assembly.
[0031] Reference Figure 2 and Figure 4 A locating pin 4 is arranged in the pin hole 10, and the outer part of the locating pin 4 is slidably connected with the inner wall of the pin hole 10. The eccentricity e of the inner and outer circle centers can be determined according to the adjustment range of the bearing center position of the main machine, usually between 0.1mm and 0.8mm. The locating pin 4 is installed in the pin hole 10 on the outer circle of the adjusting sleeve 3, that is, the center position of the bearing can be adjusted. The oil injection channel 8 corresponds to the position of the oil injection hole 7. A base 9 is arranged on the outside of the adjusting sleeve 3. The bearing cover 5 is arranged on both sides of the bearing body 1 to facilitate the installation of the bearing cover 5. The tilting pad 2 is installed in the bearing body 1; the bearing cover 5 is installed on the bearing body 1 by screws 12, and the locating pin 4 is installed on the item 3 adjusting sleeve.
[0032] Working principle: When installation is required, the bearing body 1 (including the adjustment sleeve 3) is installed on the machine base 9, and the screw 12 is inserted into the jack 6 through the through hole 11 and threadedly connected to achieve the installation of the bearing cover 5. When the center position of the bearing needs to be adjusted, the positioning pin 4 is installed in the pin hole 10 on the outer circle of the adjustment sleeve 3 in turn, and the center position of the bearing can be adjusted.
[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A tilting pad bearing with adjustable center position, comprising a bearing body (1), characterized in that: Four tilting pads (2) are arranged inside the bearing body (1), an adjusting sleeve (3) is arranged outside the bearing body (1), an oil injection hole (7) is penetrated through the outside of the adjusting sleeve (3), an oil injection channel (8) is opened outside the bearing body (1), fixing components are arranged on both sides of the bearing body (1), and pin holes (10) are evenly distributed on the front side of the outside of the adjusting sleeve (3).
2. The tilting pad bearing with adjustable center position according to claim 1, characterized in that: The fixing assembly comprises a socket (6), a plurality of the sockets (6) are arranged on both sides of the bearing body (1), a screw (12) is connected to the inner thread of the socket (6), a bearing cover (5) is arranged on the outside of the plurality of the sockets (6), and through holes (11) are penetrated and opened on both sides of the bearing cover (5), and the screws (12) pass through the through holes (11) on the outside.
3. The tilting pad bearing with adjustable center position according to claim 1, characterized in that: A positioning pin (4) is provided in the pin hole (10), and the exterior of the positioning pin (4) is slidably connected to the inner wall of the pin hole (10).
4. The tilting pad bearing with adjustable center position according to claim 1, characterized in that: The oil injection hole (7) corresponds to the oil injection channel (8) in position.
5. The tilting pad bearing with adjustable center position according to claim 2, characterized in that: The bearing covers (5) are arranged on both sides of the bearing body (1).
6. The tilting pad bearing with adjustable center position according to claim 1, characterized in that: A seat (9) is provided outside the adjusting sleeve (3).