A large thrust sliding bearing disc turning device

Abstract

The utility model discloses a big thrust sliding bearing disc wheel device, including the sliding bearing of detection, the bottom surface of the left side department of sliding bearing is fixed with support frame, is installed with drive motor on support frame, is connected with the connecting flange on the output shaft of drive motor, and the right end surface of connecting flange is pressed in the left end surface of rotor installed in sliding bearing and is fixedly connected through bolt, the right end of the right end of rotor stretches out the right end of the central through -hole of the right part of bearing seat of sliding bearing, and the inboard wall of the central through -hole of the right part of bearing seat is fixed with auxiliary support bearing bush, and the right part of rotor is inserted in the middle part through -hole of auxiliary support bearing bush, and the inboard wall between the outer inboard wall of auxiliary support bearing bush and the middle part through -hole of auxiliary support bearing bush has oil film. It simple structure, and use effect is good.

Description

Technical fields:

[0001] This utility model relates to the field of sliding bearing technology, and more specifically to a high-thrust sliding bearing turning device. Background technology:

[0002] Sliding bearings are widely used in mechanical equipment, including thermal power, hydropower, wind power, as well as steam turbines, compressors, and blowers. Before leaving the factory, bearings undergo various factory tests to verify that their design performance meets usage requirements. Among these tests, the low-speed turning test is a process to verify the rationality of the bearing's structural design and the standardization of its assembly. During the low-speed turning test, the presence of interference between parts, proper assembly, and good contact between the bearing bush support surfaces can be checked through sound and end-face runout.

[0003] Conventional sliding bearings, with their fulcrum at the rotor's center or employing a double-fulcrum structure, allow the rotor to be stably mounted on the bearing without external support. The rotor can then be rotated under external power. However, single-fulcrum high-thrust sliding bearings, with their fulcrum not at the rotor's center of gravity and only a single support point, will tilt to one side when the rotor rests on the bearing without additional support. This makes low-speed rotating tests of the bearing impossible. Therefore, a rotating device for single-fulcrum high-thrust sliding bearings needs to be designed to enable rotating tests on this type of bearing. Utility Model Content:

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a high-thrust sliding bearing turning device, which has a simple structure and good performance.

[0005] The solution of this utility model to the aforementioned technical problem is:

[0006] A high-thrust sliding bearing turning device includes a sliding bearing to be tested. A support frame is fixed on the bottom surface of the left side of the sliding bearing. A drive motor is mounted on the support frame. A connecting flange is connected to the output shaft of the drive motor. The right end face of the connecting flange presses against the left end face of the rotor installed in the sliding bearing and is fixedly connected by bolts.

[0007] The right end of the rotor extends out of the right end of the central through hole of the right part of the bearing seat of the sliding bearing. An auxiliary support bearing is fixed on the inner wall of the central through hole of the right part of the bearing seat. The right part of the rotor is inserted into the central through hole of the auxiliary support bearing. There is an oil film between its outer wall and the inner wall of the central through hole of the auxiliary support bearing.

[0008] The top plate of the support frame has four horizontally extending adjustment slots. The drive motor is located above the top plate of the support frame. Connecting blocks are fixed to the left and right sides of the front and rear side walls at the bottom of the drive motor. Washers are pressed against the top and bottom surfaces of the connecting blocks. The screw part of the fixing bolt is inserted into the corresponding horizontal adjustment slot, the middle through hole of the connecting block, and the middle through hole of the two washers. A lower washer is fitted at the bottom of the screw part of the fixing bolt. The top of the screw part of the fixing bolt extends out of the upper washer and is screwed with a locking nut. The lower washer is clamped between the bottom surface of the top plate of the support frame and the top surface of the rotating part of the fixing bolt. The lower washer is clamped between the top surface of the top plate of the support frame and the bottom surface of the connecting block. The upper washer is clamped between the bottom surface of the locking nut and the top surface of the connecting block.

[0009] The output shaft of the drive motor is connected to the left end of the connecting shaft via a drum-shaped gear coupling. The right side of the connecting shaft is a large-diameter shaft with a radially extending edge formed on the right end of its outer sidewall. The right side of the connecting shaft is inserted into the central through hole of the connecting flange. The outer sidewall of the right side of the connecting shaft is in close contact with the inner sidewall of the corresponding central through hole. The connecting flange is pressed against the left sidewall of the radially extending edge and fixedly connected by bolts.

[0010] The rotor has a left connecting flange formed on its left end. The left side wall of the left connecting flange presses against the right end face of the connecting flange. Both have corresponding left and right connecting through holes. A fastener connecting piece is pressed against the right end face of the connecting through hole of the left connecting flange. A protrusion is formed in the middle of the left end face of the fastener connecting piece, which is inserted into the corresponding connecting through hole and covers the right end of the connecting through hole. The threaded part of the connecting bolt is inserted into the two corresponding connecting through holes, and its right end is screwed into the threaded through hole in the middle of the protrusion of the corresponding fastener connecting piece. The right end face of the rotating part of the connecting bolt presses against the left end face of the connecting flange.

[0011] The lower inner wall of the auxiliary support bearing has multiple intermediate oil injection holes formed in the middle. The right end face of the lower part of the auxiliary support bearing has multiple oil inlet connection holes extending to the left. The left end of the oil inlet connection hole is connected to the bottom end of the corresponding intermediate oil injection hole. A high-pressure thin oil station is placed on the ground to the right of the sliding bearing. The end of the corresponding oil outlet connection pipe of the high-pressure thin oil station is connected to the corresponding oil inlet connection hole.

[0012] The outstanding effect of this utility model is:

[0013] It achieves the turning test of a single-support, high-thrust sliding bearing by using high-pressure top oil support for the auxiliary support bearing bush and a variable frequency motor drive. Attached image description:

[0014] Figure 1 This is a partial structural schematic diagram of the present invention;

[0015] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0016] Figure 3 yes Figure 1 A magnified view of another part;

[0017] Figure 4 yes Figure 1 There are also some enlarged partial images. Detailed implementation method:

[0018] For example, see below. Figures 1 to 4 As shown, a high-thrust sliding bearing turning device includes a sliding bearing 10 to be tested. The bearing seat 11 of the sliding bearing 10 is pressed against or fixed to a connecting plate fixed on the ground. A support frame 20 is fixed on the bottom surface of the left side of the sliding bearing 10. A drive motor 21 is installed on the support frame 20. A connecting flange 30 is connected to the output shaft of the drive motor 21. The right end face of the connecting flange 30 is pressed against the left end face of the rotating shaft 40 installed in the sliding bearing 10 and fixedly connected by bolts.

[0019] The right end of the rotating shaft 40 extends out of the right end of the central through hole of the bearing seat 11 of the sliding bearing 10. An auxiliary support bearing bush 50 is fixed on the inner wall of the central through hole of the right side of the bearing seat 11. The right side of the rotating shaft 40 is inserted into the central through hole of the auxiliary support bearing bush 50, and there is an oil film between its outer wall and the inner wall of the central through hole of the auxiliary support bearing bush 50.

[0020] Furthermore, the top plate of the support frame 20 is formed with four horizontally extending adjustment slots 210. The drive motor 21 is located above the top plate of the support frame 20. Connecting blocks 22 are fixed to the left and right sides of the front and rear side walls at the bottom of the drive motor 21. The top and bottom surfaces of the connecting blocks 22 are pressed against the washers. The screw part of the fixing bolt 23 is inserted into the corresponding horizontal adjustment slots 210, the middle through hole of the connecting block 22, and the middle through hole of the two washers. The bottom of the screw part of the fixing bolt 23 is fitted with a lower washer. The top of the screw part of the fixing bolt 23 extends out of the upper washer and is screwed with a locking nut 24. The lower washer is clamped between the bottom surface of the top plate of the support frame 20 and the top surface of the rotating part of the fixing bolt 23. The lower washer is clamped between the top surface of the top plate of the support frame 20 and the bottom surface of the connecting block 22. The upper washer is clamped between the bottom surface of the locking nut 24 and the top surface of the connecting block 22.

[0021] Vertical blocks 25 are fixed to the top surface of the top plate of the support frame 20 on the left or right side of the connecting block 22. A central threaded through hole is formed in the middle of the vertical block 25. The screw part of the horizontal adjusting bolt 26 is screwed into the corresponding central threaded through hole. The end of the screw part of the horizontal adjusting bolt 26 extends out of the corresponding vertical block 25 and presses against the left or right side wall of the corresponding connecting block 22.

[0022] The above structure allows for the loosening of the locking nuts 24 at all fixing bolts 23 during installation. Then, the lateral adjusting bolt 26 can be rotated to adjust the left and right positions of the drive motor 21. After adjustment, all locking nuts 24 can be tightened, making position adjustment convenient.

[0023] Furthermore, the output shaft of the drive motor 21 is connected to the left end of the connecting shaft 27 via a drum-shaped gear coupling 211. The right side of the connecting shaft 27 is a large-diameter shaft, and the right end of its outer side wall is formed with a radially extending edge. The right side of the connecting shaft 27 is inserted into the central through hole of the connecting flange 30. The outer side wall of the right side of the connecting shaft 27 is in close contact with the inner side wall of the corresponding central through hole. The connecting flange 30 is pressed against the left side wall of the radially extending edge and fixedly connected by bolts.

[0024] The left end of the rotating shaft 40 is formed with a left connecting flange 41. The left side wall of the left connecting flange 41 presses against the right end face of the connecting flange 30. Both are formed with corresponding left and right connecting through holes. A fastener connecting piece 42 is pressed against the right end face of the connecting through hole of the left connecting flange 41. A protrusion is formed in the middle of the left end face of the fastener connecting piece 42, which is inserted into the corresponding connecting through hole and covers the right end of the connecting through hole. The threaded part of the connecting bolt 43 is inserted into the two corresponding connecting through holes, and its right end is screwed into the threaded through hole in the middle of the protrusion of the corresponding fastener connecting piece 42. The right end face of the rotating part of the connecting bolt 43 presses against the left end face of the connecting flange 30.

[0025] The left part of the radial extension edge of the connecting shaft 27 is inserted into the annular groove formed on the inner side wall of the right end of the central through hole of the connecting flange 30. The left end face of the radial extension edge of the connecting shaft 27 is pressed against the left end face of the annular groove and fixedly connected by bolts. The right part of the radial extension edge of the connecting shaft 27 extends out of the right end of the annular groove and is inserted into the second annular groove formed on the inner side wall of the left end of the central through hole of the left connecting flange 41. The right end face of the radial extension edge of the connecting shaft 27 is pressed against the right end face of the second annular groove, and the outer side wall of the radial extension edge of the connecting shaft 27 is in close contact with the inner side wall of the second annular groove.

[0026] The lower inner wall of the auxiliary support bearing 50 has multiple inwardly concave static pressure cavities formed in the middle. A central oil injection hole 51 is formed in the middle of the bottom surface of the static pressure cavity. Multiple oil inlet connection holes 52 extending to the left are formed on the right end face of the lower part of the auxiliary support bearing 50. The left end of the oil inlet connection hole 52 communicates with the bottom end of the corresponding central oil injection hole 51. A high-pressure thin oil station 60 is placed on the ground to the right of the sliding bearing 10. The end of the corresponding oil outlet connection pipe of the high-pressure thin oil station 60 is connected to the corresponding oil inlet connection hole 52. A solenoid valve is installed on the oil outlet connection pipe to control the inlet and outlet of the oil. A pressure control valve is also installed on the oil outlet connection pipe to detect the oil pressure at the outlet of the oil outlet connection pipe, so as to ensure that the oil can lift the rotating shaft 40 while ensuring that it does not flow out of the static pressure cavity. The oil outlet control oil pressure and other technologies and structures of the high-pressure thin oil station 60 are existing conventional technologies and structures, and will not be described in detail here.

[0027] A support bearing bush 15 is installed inside the central through hole on the left side of the bearing seat 11 of the sliding bearing 10. The rotating shaft 40 is inserted into the support bearing bush 15, and there is a gap between its outer side wall and the inner side wall of the support bearing bush 15. In order to reduce the friction between the rotating shaft 40 and the inner side wall of the support bearing bush 15 during subsequent low-speed turning, oil can be applied to the inner side wall of the support bearing bush 15.

[0028] In this embodiment, one end of the rotating shaft 40 is driven by the drive motor 21 to rotate. At the same time, oil is pumped into the static pressure chamber through the high-pressure thin oil station 60, causing the rotating shaft 40 to be lifted and rotated. This creates an oil film between the outer wall of the shaft and the inner wall of the central through hole of the auxiliary support bearing 50, reducing wear and enabling the rotating shaft 40 to rotate normally.

[0029] The drive motor 21 in this embodiment is a variable frequency motor.

[0030] This invention utilizes high-pressure top oil support of the auxiliary support bearing bush 50 and a variable frequency motor drive to achieve a turning test of a single-pivot high-thrust sliding bearing. The auxiliary support bearing bush 50 utilizes the bearing end cover mounting position of the bearing housing 11 (i.e., the position of the central through hole at the right end of the bearing housing 11) to transform the single-pivot sliding bearing into a simple double-pivot structure (the connection point of the drive motor 21 and the support point of the support bearing bush 15), allowing the rotating shaft 40 to rest smoothly within the bearing housing 11. The use of high-pressure top oil lubrication significantly reduces the coefficient of sliding friction, making the turning test safer and more efficient.

[0031] The variable frequency motor allows the rotating shaft 40 to achieve stable low-speed rotation by adjusting the frequency. At the same time, the output shaft of the drive motor 21 is connected to the left end of the connecting shaft 27 through the drum gear coupling 211, which can achieve greater angular phase compensation, greatly reduce the requirements for on-site installation and calibration, and save assembly time.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-thrust sliding bearing turning device, comprising a sliding bearing (10) to be tested, characterized in that: A support frame (20) is fixed on the bottom surface of the left side of the sliding bearing (10). A drive motor (21) is installed on the support frame (20). A connecting flange (30) is connected to the output shaft of the drive motor (21). The right end face of the connecting flange (30) presses against the left end face of the rotating shaft (40) installed in the sliding bearing (10) and is fixedly connected by bolts. The right end of the rotating shaft (40) extends out of the right end of the central through hole of the bearing seat (11) of the sliding bearing (10). An auxiliary support bearing shell (50) is fixed on the inner wall of the central through hole of the right side of the bearing seat (11). The right side of the rotating shaft (40) is inserted into the central through hole of the auxiliary support bearing shell (50). There is an oil film between its outer wall and the inner wall of the central through hole of the auxiliary support bearing shell (50).

2. The high-thrust sliding bearing turning device according to claim 1, characterized in that: The top plate of the support frame (20) has four horizontally extending adjustment slots (210). The drive motor (21) is located above the top plate of the support frame (20). Connecting blocks (22) are fixed to the left and right sides of the front and rear side walls of the bottom of the drive motor (21). The top and bottom surfaces of the connecting blocks (22) are pressed against the gaskets. The screw of the fixing bolt (23) is inserted into the corresponding horizontal adjustment slot (210), the middle through hole of the connecting block (22), and the middle of the two gaskets. In the through hole, a lower washer is fitted at the bottom of the screw part of the fixing bolt (23), and an upper washer extends from the top of the screw part of the fixing bolt (23) and is screwed with a lock nut (24). The lower washer is clamped between the bottom surface of the top plate of the support frame (20) and the top surface of the rotating part of the fixing bolt (23). The lower washer is clamped between the top surface of the top plate of the support frame (20) and the bottom surface of the connecting block (22). The upper washer is clamped between the bottom surface of the lock nut (24) and the top surface of the connecting block (22).

3. The high-thrust sliding bearing turning device according to claim 2, characterized in that: Vertical blocks (25) are fixed on the top surface of the top plate of the support frame (20) at the left or right side of the connecting block (22). A central threaded through hole is formed in the middle of the vertical block (25). The screw part of the horizontal adjusting bolt (26) is screwed into the corresponding central threaded through hole. The end of the screw part of the horizontal adjusting bolt (26) extends out of the corresponding vertical block (25) and presses against the left or right side wall of the corresponding connecting block (22).

4. The high-thrust sliding bearing turning device according to claim 1, characterized in that: The output shaft of the drive motor (21) is connected to the left end of the connecting shaft (27) through a drum-shaped gear coupling (211). The right side of the connecting shaft (27) is a large-diameter shaft with a radially extending edge formed on the right end of its outer sidewall. The right side of the connecting shaft (27) is inserted into the middle through hole of the connecting flange (30). The outer sidewall of the right side of the connecting shaft (27) is close to the inner sidewall of the corresponding middle through hole. The connecting flange (30) is pressed against the left sidewall of the radially extending edge and fixedly connected by bolts.

5. The high-thrust sliding bearing turning device according to claim 4, characterized in that: The left end of the rotating shaft (40) is formed with a left connecting flange (41). The left side wall of the left connecting flange (41) presses against the right end face of the connecting flange (30). Both are formed with corresponding left and right connecting through holes. The right end face of the connecting through hole of the left connecting flange (41) is pressed against a fastener connecting piece (42). The middle part of the left end face of the fastener connecting piece (42) is formed with a protrusion, which is inserted into the corresponding connecting through hole and covers the right end of the connecting through hole. The screw part of the connecting bolt (43) is inserted into the two corresponding connecting through holes. Its right end is screwed into the middle screwed through hole of the protrusion of the corresponding fastener connecting piece (42). The right end face of the rotating part of the connecting bolt (43) presses against the left end face of the connecting flange (30).

6. The high-thrust sliding bearing turning device according to claim 4, characterized in that: The left part of the radial extension edge of the connecting shaft (27) is inserted into the annular groove formed on the inner wall of the right end of the central through hole of the connecting flange (30). The left end face of the radial extension edge of the connecting shaft (27) is pressed against the left end face of the annular groove and fixedly connected by bolts. The right part of the radial extension edge of the connecting shaft (27) extends out of the right end of the annular groove and is inserted into the second annular groove formed on the inner wall of the left end of the central through hole of the left connecting flange (41). The right end face of the radial extension edge of the connecting shaft (27) is pressed against the right end face of the second annular groove. The outer wall of the radial extension edge of the connecting shaft (27) is in close contact with the inner wall of the second annular groove.

7. The high-thrust sliding bearing turning device according to claim 1, characterized in that: The bearing seat (11) of the sliding bearing (10) is pressed against or fixed to a connecting plate fixed on the ground.

8. The high-thrust sliding bearing turning device according to claim 1, characterized in that: The lower inner wall of the auxiliary support bearing (50) has multiple inwardly concave static pressure cavities formed in the middle. The bottom surface of the static pressure cavity has a central oil injection hole (51). The lower right end face of the auxiliary support bearing (50) has multiple oil inlet connection holes (52) extending to the left. The left end of the oil inlet connection hole (52) is connected to the bottom end of the corresponding central oil injection hole (51). A high-pressure thin oil station (60) is placed on the ground to the right of the sliding bearing (10). The end of the corresponding oil outlet connection pipe of the high-pressure thin oil station (60) is connected to the corresponding oil inlet connection hole (52).

Images