A bearing mounting structure with protective function

Abstract

This invention belongs to the field of generator bearing installation technology, specifically a bearing installation structure with protective functions. Addressing the problems of poor protection and forceful installation methods in the prior art, the following solution is proposed: a PLC control cabinet with an electric heater mounted on its top outer wall, and a rotary cylinder mounted on the top outer wall of the electric heater. The piston rod of the rotary cylinder is connected to a traction column, and a vertical plate is fixedly connected to the top outer wall of the electric heater. This invention ensures uniform heating of the inner ring of the bearing body, improves the consistency of inner ring expansion, eliminates the need for manual removal of the bearing body, provides good protection, eliminates the risk of burns, and prevents bearing detachment. It achieves automatic installation of the bearing body, prevents excessive thrust from forcibly squeezing the bearing body against the end of the main shaft, prevents damage to the bearing body, and ensures the stability of the bearing body during subsequent operation.

Description

Technical Field

[0001] This invention relates to the field of generator bearing technology, and in particular to a bearing mounting structure with protective functions. Background Technology

[0002] A generator is a device that converts mechanical energy into electrical energy. The working principle of a generator is electromagnetic induction. Its core structure consists of two parts: a rotor and a stator. The rotor is the rotating part, usually made of magnetic material, while the stator is the stationary part, including coils and an iron core. Generators can be driven by water turbines, steam turbines, diesel engines, or other power machinery to convert the energy generated by water flow, airflow, fuel combustion, or nuclear fission into mechanical energy, and then into electrical energy.

[0003] During the assembly of the generator set, the corresponding bearings need to be installed on the main shaft of the motor. The inner ring of the bearing is usually slightly smaller than the outer diameter of the main shaft. In order to ensure that the bearing can be installed on the main shaft smoothly, the inner diameter of the bearing is usually increased by heating the inner ring of the bearing. However, after the bearing is heated by the electric heater, it needs to be removed manually. At this time, the temperature of the inner ring of the bearing is very high, which not only poses a risk of burns, but also easily causes the bearing to fall off.

[0004] In addition, when the bearing is heated and installed onto the spindle, if resistance is encountered, the bearing is usually pushed forward by hitting it. However, this installation method is very violent and can easily damage the bearing, affecting the stability of later operation. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the present invention provides a bearing mounting structure with protective function, which overcomes the shortcomings of the prior art and effectively solves the problems of poor protection effect and violent installation method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A bearing mounting structure with protective function includes a PLC control cabinet. An electric heater is installed on the top outer wall of the PLC control cabinet, and a rotary cylinder is installed on the top outer wall of the electric heater. The piston rod of the rotary cylinder is connected to a traction column. A vertical plate is fixedly connected to the top outer wall of the electric heater, and a horizontal plate is rotatably connected to the top outer wall of the vertical plate. A lifting cylinder is hinged between the vertical plate and the horizontal plate, and a servo motor is fixedly connected to the bottom outer wall of the horizontal plate by bolts. A traction wheel is fixedly connected to the output shaft of the servo motor.

[0008] A mounting bracket is provided on one side of the PLC control cabinet, and a first hydraulic push rod is fixedly connected to the top outer wall of the mounting bracket by bolts. The piston rod of the first hydraulic push rod is connected to a second hydraulic push rod. The piston rod of the second hydraulic push rod is fixedly connected to a connecting bracket, and symmetrically distributed bearing push rods are welded to the bottom outer wall of the connecting bracket. A spring is connected to one side outer wall of the connecting bracket, and a positioning pin is fixedly connected to one side outer wall of the connecting bracket inside the spring.

[0009] Preferably, a boom is welded to one side of the outer wall of the mounting frame, and a fixing plate is welded to one end of the outer wall of the boom. A linear bearing is installed on the inner wall of the fixing plate, and the outer diameter of the positioning pin is adapted to the outer diameter of the linear bearing.

[0010] Preferably, a mounting base is provided on one side of the PLC control cabinet, and an electric guide rail is installed on the top outer wall of the mounting base. A slide table is installed on the slider of the electric guide rail, and a generator is placed on the top outer wall of the slide table.

[0011] Preferably, a main shaft is installed on the inner wall of one end of the generator, and a pair of pins are provided on the outer wall of one end of the main shaft.

[0012] Preferably, a positioning hole is provided on the inner wall of one end of the pin, and a first positioning block is welded to the outer wall of one end of the traction column. The size of the first positioning block is adapted to the size of the positioning hole. A second positioning block is welded to the outer wall of the other end of the pin, and the second positioning block is inserted into the inner wall of one end of the spindle.

[0013] Preferably, a support one and a support two are welded to both sides of the top outer wall of the electric heater, and the traction column is slidably connected to the inner wall of the support two.

[0014] Preferably, an electric heating block is connected to one outer wall of the electric heater via a cable, and a bearing body is placed on the outer wall of the traction column, with the electric heating block adsorbed on the outer wall of the inner ring of the bearing body.

[0015] Preferably, a positioning plate is welded to the outer wall of the top of the slide, and the base of the generator is set on the inner wall of the positioning plate.

[0016] The beneficial effects of this invention are as follows:

[0017] The bearing mounting structure of the present invention has a protective function. After the bearing body is placed on the traction column and connected to the electric heating block, the horizontal plate is moved downward by retracting the piston rod of the lifting cylinder. The traction wheel can fit against the top of the bearing body. The rotation of the traction wheel driven by the servo motor can control the rotation of the bearing body, ensuring the uniformity of heating of the inner ring of the bearing body and improving the consistency of the expansion of the inner ring of the bearing body. At the same time, the bearing body can be flipped to the side closer to the generator by rotating the traction column by the rotating cylinder. There is no need to manually remove the bearing body. The protection effect is good, there is no risk of being burned, and the bearing body is prevented from falling off.

[0018] The bearing mounting structure of the present invention, which has a protective function, allows for automatic installation of the bearing body after the pin is connected between the traction column and the main shaft. The connecting frame is moved downward by the first hydraulic push rod, and the second hydraulic push rod can control the bearing push rod to push the bearing body onto the main shaft. Furthermore, when the bearing body is installed in place, the resistance of the second hydraulic push rod can be increased under the action of the spring, preventing excessive thrust from forcibly squeezing the bearing body against the end of the main shaft, thus preventing damage to the bearing body and ensuring the stability of the bearing body in subsequent operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the bearing body during heating, according to the bearing mounting structure with protective function proposed in this invention.

[0020] Figure 2 This is a schematic diagram of the overall structure of the bearing body during installation of a bearing mounting structure with protective function proposed in this invention.

[0021] Figure 3 This is a schematic diagram of the connection structure of a PLC control cabinet with a bearing mounting structure having a protective function, as proposed in this invention.

[0022] Figure 4 This is a schematic diagram of the pin of a bearing mounting structure with protective function proposed in this invention.

[0023] In the diagram: 1. PLC control cabinet; 2. Electric heater; 3. Rotary cylinder; 4. Traction column; 5. Vertical plate; 6. Horizontal plate; 7. Lifting cylinder; 8. Servo motor; 9. Traction wheel; 10. Mounting bracket; 11. First hydraulic push rod; 12. Second hydraulic push rod; 13. Connecting bracket; 14. Bearing push rod; 15. Spring; 16. Positioning pin; 17. Boom; 18. Fixing plate; 19. Linear bearing; 20. Mounting base; 21. Electric guide rail; 22. Slide table; 23. Generator; 24. Main shaft; 25. Pin; 26. Positioning hole; 27. First positioning block; 28. Second positioning block; 29. ​​Support 1; 30. Support 2; 31. Electric heating block; 32. Bearing body; 33. Positioning plate. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Example 1, refer to Figures 1 to 3A bearing mounting structure with protective function includes a PLC control cabinet 1. An electric heater 2 is installed on the top outer wall of the PLC control cabinet 1, and a rotary cylinder 3 is installed on the top outer wall of the electric heater 2. The piston rod of the rotary cylinder 3 is connected to a traction column 4. A vertical plate 5 is fixedly connected to the top outer wall of the electric heater 2, and a horizontal plate 6 is rotatably connected to the top outer wall of the vertical plate 5. A lifting cylinder 7 is hinged between the vertical plate 5 and the horizontal plate 6, and a servo motor 8 is fixedly connected to the bottom outer wall of the horizontal plate 6 by bolts. A traction wheel 9 is fixedly connected to the output shaft of the servo motor 8.

[0026] In this embodiment, after the bearing body 32 is placed on the traction column 4 and connected to the electric heating block 31, the horizontal plate 6 is moved downward by retracting the piston rod of the lifting cylinder 7. The traction wheel 9 can fit against the top of the bearing body 32. The rotation of the traction wheel 9 driven by the servo motor 8 can control the rotation of the bearing body 32, ensuring the uniformity of heating of the inner ring of the bearing body 32 and improving the consistency of the expansion of the inner ring of the bearing body 32. At the same time, the bearing body 32 can be flipped to the side closer to the generator 23 by rotating the traction column 4 through the rotating cylinder 3. There is no need to manually remove the bearing body 32, which has a good protective effect and will not cause the risk of being burned. It also avoids the bearing body 32 from falling off.

[0027] Example 2, refer to Figure 1 A bearing mounting structure with protective function is provided. A mounting bracket 10 is provided on one side of the PLC control cabinet 1. A first hydraulic push rod 11 is fixedly connected to the top outer wall of the mounting bracket 10 by bolts. The piston rod of the first hydraulic push rod 11 is connected to a second hydraulic push rod 12. The piston rod of the second hydraulic push rod 12 is fixedly connected to a connecting bracket 13. The bottom outer wall of the connecting bracket 13 is welded with symmetrically distributed bearing push rods 14. A spring 15 is connected to one side outer wall of the connecting bracket 13. A positioning pin 16 is fixedly connected to one side outer wall of the connecting bracket 13 inside the spring 15.

[0028] In this embodiment, after the pin 25 is connected between the traction column 4 and the main shaft 24, the connecting frame 13 is moved downward by the first hydraulic push rod 11, and the second hydraulic push rod 12 can control the bearing push rod 14 to push the bearing body 32 onto the main shaft 24, realizing the automatic installation of the bearing body 32. When the bearing body 32 is installed in place, the resistance of the second hydraulic push rod 12 can be increased under the action of the spring 15, preventing the bearing body 32 from being forcibly squeezed against the end of the main shaft 24 due to excessive thrust, preventing damage to the bearing body 32, and ensuring the stability of the bearing body 32 in later operation.

[0029] Reference Figure 2A boom 17 is welded to one side of the outer wall of the mounting frame 10, and a fixing plate 18 is welded to one end of the outer wall of the boom 17. A linear bearing 19 is installed on the inner wall of the fixing plate 18. The outer diameter of the positioning pin 16 is matched with the outer diameter of the linear bearing 19. When the second hydraulic push rod 12 pushes the connecting frame 13, the positioning pin 16 will move towards the fixing plate 18. Then the positioning pin 16 will slide along the inner wall of the linear bearing 19 to ensure the stability of the bearing body 32 installation.

[0030] Reference Figures 1 to 2 A mounting base 20 is provided on one side of the PLC control cabinet 1, and an electric guide rail 21 is installed on the top outer wall of the mounting base 20. A slide table 22 is installed on the slider of the electric guide rail 21, and a generator 23 is placed on the top outer wall of the slide table 22. The electric guide rail 21 on the mounting base 20 can drive the generator 23 to move towards the PLC control cabinet 1.

[0031] Reference Figure 4 A main shaft 24 is installed on the inner wall of one end of the generator 23, and a pair of pins 25 are provided on the outer wall of one end of the main shaft 24. The end of the main shaft 24 on the generator 23 is the final installation location of the bearing body 32. When installing the bearing body 32, the pair of pins 25 need to be fixed to one end of the main shaft 24 first.

[0032] Reference Figures 1 to 4 A positioning hole 26 is provided on the inner wall of one end of the pin 25, and a first positioning block 27 is welded to the outer wall of one end of the traction column 4. The size of the first positioning block 27 is adapted to the size of the positioning hole 26. A second positioning block 28 is welded to the outer wall of the other end of the pin 25, and the second positioning block 28 is inserted into the inner wall of one end of the main shaft 24. When the traction column rotates to the side closer to the motor, the pin 25 can be well inserted between the main shaft 24 and the traction column 4 through the first positioning block 27 and the positioning hole 26 at both ends of the pin 25.

[0033] Reference Figure 3 The top outer wall of the electric heater 2 is welded with support 29 and support 30 on both sides respectively, and the traction column 4 is slidably connected to the inner wall of support 30. Support 29 is used to support the traction column 4, and support 30 is used to provide the rotation axis of the traction column 4.

[0034] Reference Figures 2 to 3 An electric heating block 31 is connected to one outer wall of the electric heater 2 via a cable, and a bearing body 32 is placed on the outer wall of the traction column 4. The electric heating block 31 is adsorbed onto the outer wall of the inner ring of the bearing body 32. When the electric heating block 31 is adsorbed onto the bearing body 32, the electric heater 2 will control the electric heating block 31 to heat the inner ring of the bearing body 32, thereby expanding the inner diameter of the inner ring, which facilitates the installation of the bearing body 32 onto the spindle 24.

[0035] Reference Figure 2A positioning plate 33 is welded to the outer wall of the top of the slide table 22, and the base of the generator 23 is set on the inner wall of the positioning plate 33. The positioning plate 33 is mainly used to determine the placement position of the generator 23 and improve the accuracy of the bearing body 32 during installation.

[0036] Working principle: First, the bearing body 32 is placed on the traction column 4. Then, the electric heating block 31 is attracted to the bearing body 32. The electric heater 2 controls the electric heating block 31 to heat the inner ring of the bearing body 32, so that the inner diameter of the inner ring expands. During this process, the lifting cylinder 7 retracts the piston rod to control the traction wheel 9 at the bottom of the horizontal plate 6 to move downward and fit against the top of the bearing body 32. The servo motor 8 drives the traction wheel 9 to rotate and control the rotation of the bearing body 32 to ensure the uniform heating of the inner ring of the bearing body 32. After that, the rotating cylinder 3 rotates the traction column 4 to flip the bearing body 32 to the side closer to the generator 23.

[0037] Then, the pin 25 is fixed to one end of the spindle 24, and the generator 23 is moved towards the PLC control cabinet 1 by the electric guide rail 21, so that the pin 25 is inserted between the spindle 24 and the traction column 4. Subsequently, the connecting frame 13 is moved downward by the first hydraulic push rod 11, and the second hydraulic push rod 12 controls the bearing push rod 14 to push the bearing body 32 onto the spindle 24. When the bearing body 32 is installed in place, the resistance of the second hydraulic push rod 12 can be increased under the action of the spring 15 to prevent the bearing body 32 from being forcibly squeezed against the end of the spindle 24 due to excessive thrust, thus preventing damage to the bearing body 32.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A bearing mounting structure with protective functions, comprising a PLC control cabinet (1), characterized in that, An electric heater (2) is provided on the top outer wall of the PLC control cabinet (1), and a rotary cylinder (3) is installed on the top outer wall of the electric heater (2). The piston rod of the rotary cylinder (3) is connected to a traction column (4). A vertical plate (5) is fixedly connected to the top outer wall of the electric heater (2), and a horizontal plate (6) is rotatably connected to the top outer wall of the vertical plate (5). A lifting cylinder (7) is hinged between the vertical plate (5) and the horizontal plate (6), and a servo motor (8) is fixedly connected to the bottom outer wall of the horizontal plate (6) by bolts. A traction wheel (9) is fixedly connected to the output shaft of the servo motor (8). The PLC control cabinet (1) is provided with a mounting bracket (10) on one side, and a first hydraulic push rod (11) is fixedly connected to the top outer wall of the mounting bracket (10) by bolts. The piston rod of the first hydraulic push rod (11) is connected to a second hydraulic push rod (12). The piston rod of the second hydraulic push rod (12) is fixedly connected to a connecting frame (13). The bottom outer wall of the connecting frame (13) is welded with symmetrically distributed bearing push rods (14). A spring (15) is connected to one side outer wall of the connecting frame (13). A positioning pin (16) is fixedly connected to one side outer wall of the connecting frame (13) inside the spring (15). The PLC control cabinet (1) is provided with a mounting base (20) on one side, and an electric guide rail (21) is installed on the top outer wall of the mounting base (20). A slide table (22) is installed on the slider of the electric guide rail (21), and a generator (23) is placed on the top outer wall of the slide table (22). A spindle (24) is installed on the inner wall of one end of the generator (23), and a pin (25) is provided on the outer wall of one end of the spindle (24). A positioning hole (26) is opened on the inner wall of one end of the pin (25), and a first positioning block (27) is welded on the outer wall of one end of the traction column (4). The size of the first positioning block (27) is adapted to the size of the positioning hole (26). A second positioning block (28) is welded on the outer wall of the other end of the pin (25), and the second positioning block (28) is inserted into the inner wall of one end of the spindle (24).

2. The bearing mounting structure with protective function according to claim 1, characterized in that, The mounting bracket (10) has a boom (17) welded to one side of its outer wall, and a fixing plate (18) welded to one end of the outer wall of the boom (17). A linear bearing (19) is installed on the inner wall of the fixing plate (18), and the outer diameter of the positioning pin (16) is matched with the outer diameter of the linear bearing (19).

3. The bearing mounting structure with protective function according to claim 1, characterized in that, The electric heater (2) has a support one (29) and a support two (30) welded on both sides of the top outer wall, and the traction column (4) is slidably connected to the inner wall of the support two (30).

4. The bearing mounting structure with protective function according to claim 1, characterized in that, The electric heater (2) has an electric heating block (31) connected to one side of its outer wall via a cable, and a bearing body (32) is placed on the outer wall of the traction column (4). The electric heating block (31) is attached to the outer wall of the inner ring of the bearing body (32).

5. A bearing mounting structure with protective function according to claim 1, characterized in that, The top outer wall of the slide (22) is welded with a positioning plate (33), and the base of the generator (23) is set on the inner wall of the positioning plate (33).

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