Marine oversize high-voltage motor rotor
By adopting an iron core and limiting ring structure design in the rotor of a large marine motor, the problems of low assembly efficiency and uneven copper bar length are solved, achieving consistency in copper bar length and reducing wear, thereby improving the motor's operating stability and quietness.
Patent Information
- Application Number
- CN202423091276.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Traditional marine large motor rotors have low assembly efficiency, and uneven measurement of copper bar length leads to uneven current distribution, affecting motor operation stability and noise level.
The system uses an iron core mounted on a rotating shaft. The iron core has silicon steel sheets and a limiting ring structure on both sides. The copper strip is aligned at both ends through the cooperation design of the limiting ring and the silicon steel sheet, which reduces the amount of measurement and adjustment work and improves assembly efficiency.
This achieves consistent assembly of copper bar lengths, improves assembly efficiency, reduces wear, extends the service life of the iron core, and enhances the motor's operational stability and noise reduction performance.
Smart Images
Figure CN223540337U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rotors, specifically a marine extra-large high-voltage motor rotor. Background Technology
[0002] In the shipbuilding industry, marine extra-large high-voltage motors are key power components, and their performance directly affects the ship's operating efficiency and stability. Among them, the rotor, as the core component of the motor, is particularly critical in terms of its design and manufacturing quality. Traditionally, the assembly process of large marine motor rotors typically involves inserting uniformly sized copper bars into the rotor to provide a current conduction path. This method not only ensures uniform current flow within the rotor core but also significantly reduces motor vibration and noise levels, resulting in smoother and quieter operation, thereby improving the overall performance of the ship. After all the copper bars are inserted, to ensure that each bar achieves optimal conductivity and to avoid uneven current distribution due to varying lengths, workers need to measure each copper bar at both ends with a ruler to ensure that each bar maintains the same length.
[0003] This measurement process is not only time-consuming and labor-intensive, increasing the workload of staff, but also, in actual operation, due to the large size of the rotor and the large number of copper bars, the measurement accuracy and efficiency are often difficult to guarantee effectively, affecting the overall assembly efficiency of the rotor. Therefore, in view of the above situation, a marine extra-large high-voltage motor rotor is proposed. Utility Model Content
[0004] To overcome the problem of low assembly efficiency in existing technologies, this utility model proposes a marine extra-large high-pressure motor rotor.
[0005] The technical solution adopted by this utility model to solve its technical problem is: a marine extra-large high-voltage motor rotor, including a rotating shaft and copper bars, an iron core is provided on the rotating shaft, and a first silicon steel sheet and a second silicon steel sheet are respectively provided on the front and rear sides of the iron core. The first silicon steel sheet has a T-shaped through hole, and the second silicon steel sheet has a T-shaped screw hole.
[0006] One end of the outer wall of the copper strip is interference-fitted with a first limiting ring. When one end of the copper strip is inserted into the T-shaped through hole, the first limiting ring engages with the T-shaped through hole. The outer wall of the end of the copper strip that is inserted through the T-shaped screw hole is threaded with a second limiting ring. The outer wall of the second limiting ring engages with the T-shaped screw hole.
[0007] Preferably, the core further includes several third silicon steel sheets, each of which has perforations for assembling copper strips.
[0008] Preferably, the first silicon steel sheet, the second silicon steel sheet, and the third silicon steel sheet are all provided with circular holes, which are engaged with the rotating shaft.
[0009] Preferably, both the first limiting ring and the second limiting ring are T-shaped columns.
[0010] Preferably, the first limiting ring has a through hole, which is interference-fitted with the copper strip.
[0011] Preferably, the second limiting ring has an assembly hole and the outer wall of the second limiting ring has a threaded structure.
[0012] Preferably, one end of the outer wall of the copper strip has an external thread, the assembly hole is threaded with the external thread, and the thread structure on the second limiting ring is threaded with the T-shaped screw hole.
[0013] Preferably, the iron core is provided with U-shaped grooves and trapezoidal grooves.
[0014] The advantages of this utility model are:
[0015] 1. Through the structural design of the first silicon steel sheet, T-shaped through hole, second silicon steel sheet, T-shaped screw hole, first limiting ring and second limiting ring, this utility model can ensure that after each copper bar is inserted into the iron core, its two ends can be aligned and maintain the same length, eliminating the need for workers to measure and adjust each one individually, reducing the workload in the assembly process, shortening the assembly cycle, and thus significantly improving the overall assembly efficiency.
[0016] 2. Through the structural design of the first limiting ring and the second limiting ring, when the worker uses a tool to strike the copper strip extending out of the iron core, the bent part of the copper strip acts on the first limiting ring and the second limiting ring, thereby reducing the wear on the first silicon steel sheet and the second silicon steel sheet and extending the service life of the iron core. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the rotor structure;
[0019] Figure 2 This is a schematic diagram of the assembly structure of the copper strip;
[0020] Figure 3This is a schematic diagram of the structure of the first silicon steel sheet;
[0021] Figure 4 This is a schematic diagram of the structure of the second silicon steel sheet;
[0022] Figure 5 This is a schematic diagram of the assembly structure of the second limiting ring;
[0023] Figure 6 This is a schematic diagram of the assembly structure of the first limiting ring.
[0024] In the diagram: 1. Rotating shaft; 2. Iron core; 201. First silicon steel sheet; 2010. T-shaped through hole; 202. Second silicon steel sheet; 2020. T-shaped screw hole; 3. Copper strip; 301. External thread; 4. First limiting ring; 5. Second limiting ring; 501. Assembly hole. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0026] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.
[0027] This application discloses a marine extra-large high-voltage motor rotor. (Refer to...) Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 A marine extra-large high-pressure motor rotor, mainly used in high hydraulic motors of ships, includes a rotating shaft 1 and copper bars 3. An iron core 2 is provided on the rotating shaft 1. The front and rear sides of the iron core 2 are respectively provided with a first silicon steel sheet 201 and a second silicon steel sheet 202. Specifically, the first silicon steel sheet 201, the second silicon steel sheet 202 and the third silicon steel sheet are all provided with round holes, which cooperate with the rotating shaft 1. The first silicon steel sheet 201 has a T-shaped through hole 2010, and the second silicon steel sheet 202 has a T-shaped screw hole 2020.
[0028] One end of the outer wall of the copper strip 3 is interference-fitted with a first limiting ring 4. When one end of the copper strip 3 is inserted into the T-shaped through hole 2010, the first limiting ring 4 is engaged with the T-shaped through hole 2010. The outer wall of the end of the copper strip 3 that is inserted through the T-shaped screw hole 2020 is threadedly engaged with a second limiting ring 5. The outer wall of the second limiting ring 5 is threadedly engaged with the T-shaped screw hole 2020.
[0029] Specifically, when the staff uses tools to strike the copper strip 3 extending out of the iron core 2, the bent part of the copper strip 3 acts on the first limiting ring 4 and the second limiting ring 5, thereby reducing the wear on the first silicon steel sheet 201 and the second silicon steel sheet 202 and extending the service life of the iron core 2.
[0030] Reference Figure 1 , Figure 5 and Figure 6 The iron core 2 also includes several third silicon steel sheets, each of which has through holes for assembling copper strips 3.
[0031] Among them, several third silicon steel sheets, first silicon steel sheets 201 and second silicon steel sheets 202 are stacked and sleeved on the rotating shaft 1, and the third silicon steel sheets, first silicon steel sheets 201 and second silicon steel sheets 202 are made of the same material.
[0032] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6 The first limiting ring 4 and the second limiting ring 5 are both T-shaped columns. The first limiting ring 4 has a through hole, which is interference-fitted with the copper strip 3. The second limiting ring 5 has an assembly hole 501. The outer wall of the second limiting ring 5 has a threaded structure. One end of the outer wall of the copper strip 3 has an external thread 301. The assembly hole 501 is threadedly engaged with the external thread 301. The threaded structure on the second limiting ring 5 is threadedly engaged with the T-shaped screw hole 2020.
[0033] First, the threaded end of the copper strip 3 is inserted into the T-shaped through hole 2010, and then it passes through the through holes on the third silicon steel sheet one by one and comes out through the T-shaped screw hole 2020. At this time, the first limiting ring 4 is fitted in the T-shaped through hole 2010. Then, the second limiting ring 5 is threaded onto the copper strip 3, and the second limiting ring 5 is rotated to move it into the T-shaped screw hole 2020 to fit into the T-shaped screw hole 2020, so as to ensure that the distance between the two ends of the copper strip 3 is the same.
[0034] Furthermore, both the first limiting ring 4 and the second limiting ring 5 are made of silicon steel and have the same dimensions.
[0035] Preferably, the iron core 2 is provided with U-shaped grooves and trapezoidal grooves.
[0036] The U-shaped and trapezoidal slots can increase the magnetic resistance of leakage flux, thereby reducing leakage flux and improving the efficiency and performance of the motor.
[0037] Working principle: In use, the first silicon steel sheet 201 is first assembled on the rotating shaft 1, then the third silicon steel sheets are stacked, and finally the iron core 2 is sleeved on the rotating shaft 1. The iron core 2 is composed of the first silicon steel sheet 201, the second silicon steel sheet 202, and several third silicon steel sheets.
[0038] Then, the threaded end of the copper strip 3 is inserted into the T-shaped through hole 2010, and then passes through the through holes on the third silicon steel sheet one by one before exiting through the T-shaped screw hole 2020. At this time, the first limiting ring 4 is fitted in the T-shaped through hole 2010. Then, the second limiting ring 5 is threaded onto the copper strip 3, and the second limiting ring 5 is rotated to move it into the T-shaped screw hole 2020 to fit into the T-shaped screw hole 2020, thus ensuring that the distance between the two ends of the copper strip 3 is the same.
[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A marine extra-large high-voltage motor rotor, comprising a rotating shaft (1), wherein an iron core (2) is disposed on the rotating shaft (1), characterized in that: The iron core (2) has a first silicon steel sheet (201) and a second silicon steel sheet (202) on its front and rear sides respectively. The first silicon steel sheet (201) has a T-shaped through hole (2010) and the second silicon steel sheet (202) has a T-shaped screw hole (2020). It also includes a copper strip (3), one end of the outer wall of the copper strip (3) is interference-fitted with a first limiting ring (4), when one end of the copper strip (3) is inserted into the T-shaped through hole (2010), the first limiting ring (4) is engaged with the T-shaped through hole (2010), and the outer wall of the end of the copper strip (3) that is inserted through the T-shaped screw hole (2020) is threaded with a second limiting ring (5), and the outer wall of the second limiting ring (5) is threaded with the T-shaped screw hole (2020).
2. The marine extra-large high-voltage motor rotor according to claim 1, characterized in that: The iron core (2) also includes several third silicon steel sheets, each of which has perforations for assembling copper strips (3).
3. A marine extra-large high-voltage motor rotor according to claim 2, characterized in that: The first silicon steel sheet (201), the second silicon steel sheet (202) and the third silicon steel sheet are all provided with round holes, which are engaged with the rotating shaft (1).
4. A marine extra-large high-voltage motor rotor according to claim 1, characterized in that: The first limiting ring (4) and the second limiting ring (5) are both T-shaped columns.
5. A marine extra-large high-voltage motor rotor according to claim 4, characterized in that: The first limiting ring (4) has a through hole, which is interference-fitted with the copper strip (3).
6. A marine extra-large high-voltage motor rotor according to claim 4, characterized in that: The second limiting ring (5) has an assembly hole (501) and the outer wall of the second limiting ring (5) has a threaded structure.
7. A marine extra-large high-voltage motor rotor according to claim 6, characterized in that: One end of the outer wall of the copper strip (3) has an external thread (301), the assembly hole (501) is threadedly engaged with the external thread (301), and the thread structure on the second limiting ring (5) is threadedly engaged with the T-shaped screw hole (2020).
8. A marine extra-large high-voltage motor rotor according to claim 1, characterized in that: The iron core (2) has U-shaped grooves and trapezoidal grooves.