A thrust bearing fastening device for a marine propeller main shaft

Abstract

The utility model discloses a kind of thrust bearing fastening device for ship propeller main shaft, belong to ship machinery technical field, including main shaft body, the outer surface of main shaft body is provided with support base, the inside of support base is provided with fastening ring, the outer surface of main shaft body is equipped with thrust bearing body, the inside of support base and fastening ring is slidably connected with three locating blocks, the inside of support base is rotatably connected with three adjusting screws, the outer thread of each adjusting screw is consistent with the inner wall of locating block, the inside of thrust bearing body is provided with three locating holes. The thrust bearing fastening device for ship propeller main shaft, solve the mechanical connection easily influenced by ship vibration and sea wave impact and other factors, lead to loose connection, make thrust bearing body appear displacement, affect the normal operation of main shaft body Problem, also can avoid in the moment of ship start and stop, main shaft body produces larger shaking condition, play the role of improving equipment service life.

Description

Technical Field

[0001] This utility model belongs to the field of marine machinery technology, and in particular relates to a thrust bearing fastening device for the main shaft of a ship propeller. Background Technology

[0002] During the operation of a ship, the propeller shaft is a key power transmission component, and the thrust bearing is used to withstand the axial thrust generated when the ship's propeller is working, ensuring the stable operation of the shaft. Thrust bearing fastening devices are installed at the ends of the ship's propeller shaft.

[0003] Most existing ship propeller main shaft thrust bearing fastening devices adopt traditional mechanical positioning and fastening methods. In the complex operating environment of ships, these methods are easily affected by factors such as ship vibration and wave impact, leading to loosening of the connection and displacement of the thrust bearing, which affects the normal operation of the main shaft. In addition, the main shaft will generate significant shaking at the moment of ship start-up and stop. Traditional fastening devices cannot quickly stabilize the main shaft, increasing the risk of thrust bearing wear and shortening the service life of the equipment.

[0004] To address this issue, we propose a thrust bearing fastening device for the main shaft of a ship propeller. Utility Model Content

[0005] The purpose of this utility model is to solve the problem of loosening due to external impact in the prior art, and to propose a thrust bearing fastening device for the main shaft of a ship propeller.

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

[0007] A thrust bearing fastening device for a ship propeller main shaft includes a main shaft body, a support base on the outer surface of the main shaft body, a fastening ring inside the support base, a thrust bearing body fitted onto the outer surface of the main shaft body, three positioning blocks slidably connected inside the support base and the fastening ring, three adjusting screws rotatably connected inside the support base, the external thread of each adjusting screw matching the inner wall of the positioning block, three positioning holes inside the thrust bearing body, a magnetic positioning ring fixedly connected to the outer surface of the thrust bearing body, and an electromagnetic coil fixedly connected to the inner wall of the support base.

[0008] Preferably, the outer surface of the support base is fixedly connected to a mounting ring, and the mounting ring has a plurality of mounting holes arranged at equal intervals inside.

[0009] Preferably, a reinforcing ring is fixedly connected to one end of the mounting ring near the support base, and the inner wall of the reinforcing ring is fixedly connected to the outer surface of the support base.

[0010] Preferably, an auxiliary block is fixedly connected to the outer surface of the thrust bearing body, and the auxiliary block is slidably connected to the inside of the support base.

[0011] Preferably, each of the positioning blocks has a sliding block fixedly connected to its front side, and each sliding block is slidably connected to the inside of the support base.

[0012] Preferably, each of the adjusting screws has an auxiliary bearing fitted on its outer surface, and each of the auxiliary bearings is embedded inside the support base.

[0013] In summary, the technical effects and advantages of this utility model are as follows:

[0014] The system comprises a main shaft body, a support base, a fastening ring, a thrust bearing body, a positioning block, an adjusting screw, a positioning hole, a magnetic positioning ring, and an electromagnetic coil. Rotating the adjusting screw moves the positioning block within the support base and fastening ring, inserting it into the positioning hole to lock the thrust bearing body in place. The mutual attraction between the electromagnetic coil and the magnetic positioning ring allows the main shaft body to be quickly and accurately positioned at the center of the support base. Compared to traditional mechanical positioning methods, this method offers higher positioning accuracy and effectively avoids uneven force distribution on the thrust bearing body caused by positioning deviations. During ship operation, the magnetic attraction force continuously assists in fixing the main shaft body, providing double protection in conjunction with the mechanical fastening method of the positioning hole and positioning block. This significantly enhances the stability of the thrust bearing body installation and solves the problem of mechanical connections being susceptible to ship vibration and wave impacts, leading to loosening and displacement of the thrust bearing body, thus affecting the normal operation of the main shaft body. It also prevents significant shaking of the main shaft body during ship startup and shutdown, thereby extending the equipment's service life. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional cross-sectional structural diagram of the fastening ring of this utility model;

[0017] Figure 3 This is a cross-sectional perspective structural diagram of the support base of this utility model;

[0018] Figure 4 This is a three-dimensional cross-sectional structural diagram of the main shaft body of this utility model.

[0019] In the diagram: 1. Main spindle body; 2. Support base; 3. Fastening ring; 4. Thrust bearing body; 5. Positioning block; 6. Adjusting screw; 7. Positioning hole; 8. Magnetic positioning ring; 9. Electromagnetic coil; 10. Mounting ring; 11. Mounting hole; 12. Reinforcing ring; 13. Auxiliary block; 14. Sliding block; 15. Auxiliary bearing. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4 A thrust bearing fastening device for a ship propeller main shaft includes a support base 2 on the outer surface of the main shaft body 1, a fastening ring 3 inside the support base 2, and an installation ring 10 fixedly connected to the outer surface of the support base 2. The installation ring 10 has multiple equally spaced installation holes 11 inside. By cooperating with the installation ring 10 and the installation holes 11, a good force-bearing position can be provided for the support base 2, increasing the convenience and firmness when installing the support base 2. The device can be fixed by passing an external object through the installation holes 11 and fixing it to the installation ring 10.

[0022] A thrust bearing body 4 is fitted onto the outer surface of the main shaft body 1. A reinforcing ring 12 is fixedly connected to one end of the mounting ring 10 near the support base 2. The inner wall of the reinforcing ring 12 is fixedly connected to the outer surface of the support base 2. The reinforcing ring 12 can increase the fixed connection area between the mounting ring 10 and the support base 2, making the connection between the two more solid, preventing the possibility of breakage at the connection after long-term use, and increasing the durability of the device.

[0023] Three positioning blocks 5 are slidably connected inside the support base 2 and the fastening ring 3. An auxiliary block 13 is fixedly connected to the outer surface of the thrust bearing body 4. The auxiliary block 13 is slidably connected inside the support base 2. The auxiliary block 13 can guide the entry angle of the thrust bearing body 4, so that the thrust bearing body 4 enters the support base 2 at a specified angle, thereby increasing the accuracy of subsequent positioning of the thrust bearing body 4.

[0024] The support base 2 has three adjusting screws 6 rotatably connected inside. The external thread of each adjusting screw 6 matches the inner wall of the positioning block 5. Each positioning block 5 has a sliding block 14 fixedly connected to its front side. Each sliding block 14 is slidably connected inside the support base 2. The sliding block 14 can move simultaneously with the positioning block 5 and increases the smoothness of the positioning block 5's movement by relying on the friction generated by itself on the support base 2 during movement, thus increasing the stability of the device.

[0025] The thrust bearing body 4 has three positioning holes 7 inside. A magnetic positioning ring 8 is fixedly connected to the outer surface of the thrust bearing body 4. An electromagnetic coil 9 is fixedly connected to the inner wall of the support base 2. An auxiliary bearing 15 is fitted on the outer surface of each adjusting screw 6. Each auxiliary bearing 15 is embedded in the inside of the support base 2. The auxiliary bearing 15 can reduce the friction generated by the adjusting screw 6 when rotating, making the adjusting screw 6 more sensitive when rotating. It can also reduce the wear rate of the adjusting screw 6 and increase the service life of the adjusting screw 6.

[0026] The working principle of this utility model is as follows: When in use, the support base 2 is first fixedly installed on the housing of the ship propeller through the mounting hole 11, the mounting ring 10 and the bolts, so that the main shaft body 1 is inserted into the support base 2. Then, the thrust bearing body 4 is placed into the support base 2 through the auxiliary block 13. Then, the adjusting screw 6 is rotated. The auxiliary bearing 15 can increase the sensitivity of the adjusting screw 6 when rotating, so that the positioning block 5 can move in the support base 2 and the fastening ring 3 and be inserted into the positioning hole 7 in the thrust bearing body 4, thus initially completing the fastening of the thrust bearing body 4.

[0027] Next, turn on the control switch of the electromagnetic coil 9. The electromagnetic coil 9 is energized and generates a magnetic field, which attracts the magnetic positioning ring 8 on the spindle body 1, thereby accurately positioning the spindle body 1 at the center of the support base 2. During this process, the spindle body 1 can be finely adjusted by observing the relative position of the spindle body 1 and the support base 2 to ensure accurate positioning.

[0028] During ship operation, the electromagnetic coil 9 and magnetic positioning ring 8 work continuously to help fix the main shaft body 1 and ensure the stable operation of the thrust bearing body 4. When the ship stops operating and the thrust bearing body 4 needs to be maintained or replaced, the control switch of the electromagnetic coil 9 is turned off to make the electromagnetic coil 9 lose its magnetism. Then, the adjusting screw 6 is loosened and the positioning block 5 is moved out of the positioning hole 7, so that the thrust bearing body 4 can be removed. This effectively increases the performance of the thrust bearing fastening device for the main shaft of the ship's propeller.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] 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 utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A thrust bearing fastening device for a ship propeller main shaft, comprising a main shaft body (1), characterized in that: The outer surface of the main shaft body (1) is provided with a support base (2), the inside of the support base (2) is provided with a fastening ring (3), the outer surface of the main shaft body (1) is fitted with a thrust bearing body (4), the inside of the support base (2) and the fastening ring (3) are slidably connected with three positioning blocks (5), the inside of the support base (2) is rotatably connected with three adjusting screws (6), the external thread of each adjusting screw (6) is matched with the inner wall of the positioning block (5), the inside of the thrust bearing body (4) is provided with three positioning holes (7), the outer surface of the thrust bearing body (4) is fixedly connected with a magnetic positioning ring (8), and the inner wall of the support base (2) is fixedly connected with an electromagnetic coil (9).

2. The thrust bearing fastening device for a ship propeller main shaft according to claim 1, characterized in that: The outer surface of the support base (2) is fixedly connected to an installation ring (10), and the interior of the installation ring (10) has multiple installation holes (11) arranged at equal intervals.

3. The thrust bearing fastening device for a ship propeller main shaft according to claim 2, characterized in that: The mounting ring (10) is fixedly connected to a reinforcing ring (12) at one end near the support base (2), and the inner wall of the reinforcing ring (12) is fixedly connected to the outer surface of the support base (2).

4. The thrust bearing fastening device for a ship propeller main shaft according to claim 1, characterized in that: An auxiliary block (13) is fixedly connected to the outer surface of the thrust bearing body (4), and the auxiliary block (13) is slidably connected to the inside of the support base (2).

5. A thrust bearing fastening device for a ship propeller main shaft according to claim 1, characterized in that: Each of the positioning blocks (5) has a sliding block (14) fixedly connected to its front side, and each of the sliding blocks (14) is slidably connected to the inside of the support base (2).

6. A thrust bearing fastening device for a ship propeller main shaft according to claim 1, characterized in that: Each of the adjusting screws (6) has an auxiliary bearing (15) fitted on its outer surface, and each of the auxiliary bearings (15) is embedded in the interior of the support base (2).

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