Large-braking-torque eddy current retarder rotor structure

Abstract

The utility model discloses a large braking torque eddy current retarder rotor structure which comprises a rotor disc A, a rotor disc B and a rotor shaft, the rotor disc A and the rotor disc B are arranged on the rotor shaft, a magnet exciting coil is arranged between the rotor disc A and the rotor disc B. A plurality of protrusions A are arranged on the periphery of the rotor disc A in an annular array mode. A plurality of protrusions B are arranged on the periphery of the rotor disc B in an annular array mode. The protrusions A and the protrusions B are each provided with a heat dissipation structure. The heat dissipation structure comprises a mounting piece and fins A, the mounting piece is fixedly arranged on the protrusion A or the protrusion B, and the multiple fins A are sequentially and fixedly arranged on the mounting piece; the fins A are arranged to be arc-shaped, and the orientation of the outer arc surfaces of the fins A is consistent with the rotation direction of the retarder rotor structure. The radiator has the advantages that the outer cambered surfaces of the fins A are in contact with air, the air is guided away along the outer cambered surfaces, and compared with sheet-shaped radiating fins, the air resistance is smaller when the fins A rotate.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, specifically to a rotor structure for a large braking torque eddy current retarder. Background Technology

[0002] The retarder rotor is the core rotating component in a hydraulic retarder or an eddy current retarder, and it plays a crucial role in the operation of the retarder.

[0003] For high braking torque eddy current retarders, the rotor is typically a solid or toothed / slotted rotor disk made of a highly permeable magnetic material. When the rotor rotates in a magnetic field, induced currents (eddy currents) are generated inside it. According to Lenz's law, these eddy currents generate a magnetic field opposite to the direction of rotor rotation, thereby producing a braking torque on the rotor.

[0004] The rotor of an eddy current retarder needs to quickly conduct the heat generated inside to the surface for heat dissipation. Generally, the outer wall of the rotor disk of an eddy current retarder is equipped with heat dissipation fins to enhance heat dissipation. However, the installed heat dissipation fins are plate-shaped and perpendicular to the rotor disk. As the rotor disk rotates, the heat dissipation fins have a large area of ​​planar contact with the wind, resulting in greater wind resistance.

[0005] In view of this, we propose a rotor structure for a large braking torque eddy current retarder. Utility Model Content

[0006] The purpose of this invention is to provide a rotor structure for a high braking torque eddy current retarder to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a rotor structure for a large braking torque eddy current retarder, comprising a rotor disk A, a rotor disk B, and a rotor shaft. The rotor disk A and rotor disk B are disposed on the rotor shaft, and an excitation coil is disposed between the rotor disk A and rotor disk B. The outer periphery of the rotor disk A is provided with a plurality of protrusions A arranged in a ring array, and the outer periphery of the rotor disk B is provided with a plurality of protrusions B arranged in a ring array. Heat dissipation structures are respectively provided on the protrusions A and B.

[0008] The heat dissipation structure includes a mounting plate and fins A. The mounting plate is fixedly mounted on a protrusion A or a protrusion B, and a plurality of fins A are sequentially fixedly mounted on the mounting plate.

[0009] The fin A is arc-shaped, and the outer arc surface of the fin A faces the same direction as the rotation of the retarder rotor structure.

[0010] Preferably, multiple protrusions A and multiple protrusions B are interlocked and staggered in sequence, with gaps between protrusions A and protrusions B.

[0011] Preferably, each end of the mounting plate is fixedly provided with a card, and the two cards are respectively fixedly connected to the two ends of protrusion A or protrusion B.

[0012] Preferably, the fin A has an air vent.

[0013] Preferably, the upper and lower ends of the air vent are both designed as bevels.

[0014] Preferably, a fin B is fixedly provided at the extended end of the fin A, and the fin B is inclined.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model, by setting up mounting plates and fins A, has the advantage that the outer arc surface of fins A contacts the air, and the air is guided away along the outer arc surface. Compared with plate-shaped heat dissipation fins, fins A has the advantage of lower wind resistance when rotating, which solves the problem of large wind resistance caused by the large area of ​​the heat dissipation fins contacting the wind as the rotor disk rotates.

[0017] 2. By setting fin B, this utility model has the advantage that the airflow is further expanded and guided by the tilted fin B, which further optimizes the exhaust of hot air. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the rotor disk A and rotor disk B of this utility model;

[0020] Figure 3 This is a schematic diagram of the heat dissipation structure of this utility model;

[0021] Figure 4 This is a cross-sectional view of fin A and fin B of this utility model.

[0022] In the diagram: 100, rotor disk A; 200, rotor disk B; 300, rotor shaft; 400, excitation coil; 500, heat dissipation structure;

[0023] 501. Mounting plate; 502. Card; 503. Fin A; 504. Fin B;

[0024] 5031, the cusp of an opportunity. 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 protection scope of the present utility model.

[0026] Two embodiments provided by this utility model:

[0027] Example 1

[0028] Please see Figures 1 to 3 A rotor structure for a high braking torque eddy current retarder includes a rotor disk A100, a rotor disk B200, and a rotor shaft 300. Rotor disks A100 and B200 are mounted on the rotor shaft 300. An excitation coil 400 is positioned between rotor disks A100 and B200. Multiple protrusions A are arranged in a ring array around the outer periphery of rotor disk A100, and are integrally formed with rotor disk A100. Multiple protrusions B are arranged in a ring array around the outer periphery of rotor disk B200, and are integrally formed with rotor disk B200. The protrusions A and B are staggered and interlocked, with gaps between them to provide space for heat dissipation. Heat dissipation structures 500 are respectively provided on protrusions A and B.

[0029] The heat dissipation structure 500 includes a mounting plate 501 and fins A 503. The mounting plate 501 is fixedly mounted on protrusion A or protrusion B. Two clips 502 are fixedly mounted on both ends of the mounting plate 501. The two clips 502 are fixedly connected to both ends of protrusion A or protrusion B respectively. When the mounting plate 501 is installed, the two clips 502 contact both ends of protrusion A or protrusion B respectively, limiting the mounting plate 501 in advance, which facilitates the soldering of the mounting plate 501 and the clips 502.

[0030] Multiple fins A503 are sequentially fixed on mounting plate 501. Mounting plate 501 can be welded to protrusion A or protrusion B. Fins A503 are arc-shaped, and the outer arc surface of fins A503 faces the same direction as the rotation of the retarder rotor structure. When the rotor structure of the high braking torque eddy current retarder rotates, rotor disks A100 and B200 are in a rotating state, and mounting plate 501 and fins A503 rotate accordingly. Heat conduction is enhanced through fins A503, and when the arc-shaped fins A503 rotate, the outer arc surface of fins A503 contacts the air, and the air is guided away along the outer arc surface.

[0031] This utility model, by setting up mounting plate 501 and fin A503, has the advantage that the outer arc surface of fin A503 contacts the air, and the air is guided away along the outer arc surface. Compared with plate-shaped heat dissipation fins, fin A503 has the advantage of lower wind resistance when rotating, which solves the problem of large wind resistance caused by the large area of ​​the heat dissipation fins contacting the wind as the rotor disk rotates.

[0032] Example 2

[0033] Please see Figures 3 to 4 Based on the technical content of Embodiment 1 above, another embodiment is proposed: a rotor structure for a large braking torque eddy current retarder. A vent 5031 is provided on the fin A503, and both the upper and lower ends of the vent 5031 are sloped. When the fin A503 rotates, some airflow can pass through the vent 5031, allowing the airflow to enter between adjacent fins A503 and carry away heat. Furthermore, the sloped ends of the vent 5031 act as guides for airflow.

[0034] Fin B504 is fixedly installed at the extended end of fin A503, and fin B504 is inclined. Airflow passing along the outer arc surface of fin A503 passes through fin B504, and the airflow is discharged outward by the inclined fin B504.

[0035] This invention, by setting fins B504, has the advantage that the airflow is further expanded and guided by the tilted fins B504, thereby further optimizing the exhaust of hot air.

[0036] Working principle: When the rotor structure of the high braking torque eddy current retarder rotates, the rotor shaft 300 is in a rotating state, the rotor disk A100 and rotor disk B200 rotate, and the mounting plate 501 and fin A503 rotate accordingly. When the arc-shaped fin A503 rotates, the outer arc surface of the fin A503 contacts the air, and the air is guided away for heat dissipation along the outer arc surface. Some airflow can pass through the air outlet 5031, allowing the airflow to enter between two adjacent fins A503 to carry away heat. The airflow passing along the outer arc surface of the fin A503 passes through the fin B504, and the airflow is further expanded and guided by the inclined fin B504, further optimizing the exhaust of hot air.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A rotor structure for a high braking torque eddy current retarder, characterized in that: The device includes a rotor disk A (100), a rotor disk B (200), and a rotor shaft (300). The rotor disk A (100) and the rotor disk B (200) are mounted on the rotor shaft (300). An excitation coil (400) is disposed between the rotor disk A (100) and the rotor disk B (200). The outer periphery of the rotor disk A (100) is provided with a plurality of protrusions A, and the outer periphery of the rotor disk B (200) is provided with a plurality of protrusions B. Heat dissipation structures (500) are respectively provided on the protrusions A and B. The heat dissipation structure (500) includes a mounting plate (501) and fins A (503). The mounting plate (501) is disposed on a protrusion A or a protrusion B, and a plurality of fins A (503) are disposed sequentially on the mounting plate (501). The fin A (503) is designed to be arc-shaped.

2. The rotor structure of a large braking torque eddy current retarder according to claim 1, characterized in that: Multiple protrusions A and multiple protrusions B are interlocked and staggered in sequence, with gaps between protrusions A and B.

3. The rotor structure of a large braking torque eddy current retarder according to claim 1, characterized in that: The mounting plate (501) has cards (502) at both ends, and the two cards (502) are respectively connected to the two ends of protrusion A or protrusion B.

4. The rotor structure of a large braking torque eddy current retarder according to claim 1, characterized in that: An air vent (5031) is provided on the fin A (503).

5. The rotor structure of a large braking torque eddy current retarder according to claim 4, characterized in that: The upper and lower ends of the air vent (5031) are both set as slopes.

6. The rotor structure of a large braking torque eddy current retarder according to claim 1, characterized in that: The fin A (503) is provided with a fin B (504) at its extended end, and the fin B (504) is inclined.

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