A permanent magnet speed regulator with heat dissipation structure

Abstract

The present invention provides a permanent magnet speed regulator with a heat dissipation structure, which belongs to the technical field of permanent magnet speed regulators. The technical scheme is: a permanent magnet speed regulator with a heat dissipation structure, characterized in that it includes a permanent magnet rotor assembly arranged on a load shaft, a conductor rotor assembly arranged on a motor input shaft, and a speed regulating mechanism, wherein the permanent magnet rotor assembly and the conductor rotor assembly are arranged concentrically, a plurality of vents are arranged on the conductor rotor assembly, and a detachable exhaust fin plate is arranged on the conductor rotor assembly and at a position corresponding to the vents. The beneficial effects of the present invention are: high heat dissipation efficiency, simple structure, easy installation, and little influence on the operation of the permanent magnet speed regulator.

Description

Technical Field

[0001] The invention relates to the technical field of permanent magnet speed regulators, and in particular to a permanent magnet speed regulator with a heat dissipation structure. Background Art

[0002] Permanent magnet speed regulator is a non-contact mechanical transmission speed regulation device based on the principle of electromagnetic induction. It is mainly composed of three parts: a conductor combination, a permanent magnet combination and a speed regulation device. The conductor combination is installed on the motor input shaft, and the permanent magnet combination is installed on the load output shaft. The speed regulation device can adjust the coupling area between the conductor combination and the permanent magnet combination to achieve changes in the load output torque or speed.

[0003] As a speed regulating device with flexible connection, energy saving and environmental protection, and adaptability to harsh environments, permanent magnet speed regulator has been widely used in metallurgy, petrochemical, water supply, power generation, mining and other industries. The core component of the permanent magnet speed regulator is a high-strength magnet, but its magnetic properties are affected by temperature. The permanent magnet speed regulator will generate some heat during the speed regulation process, causing the magnet temperature to rise. When the operating temperature exceeds the Curie temperature, the magnet will demagnetize, causing the permanent magnet speed regulator to fail to operate normally. Therefore, heat dissipation is crucial to the normal operation of the permanent magnet speed regulator. Summary of the invention

[0004] The object of the present invention is to provide a permanent magnet speed regulator with a heat dissipation structure which has high heat dissipation efficiency, simple structure, easy installation and little influence on the operation of the permanent magnet speed regulator.

[0005] The present invention is achieved through the following measures: a permanent magnet speed regulator with a heat dissipation structure, characterized in that it includes a permanent magnet rotor assembly arranged on a load shaft, a conductor rotor assembly arranged on a motor input shaft and a speed regulating mechanism, the permanent magnet rotor assembly and the conductor rotor assembly are arranged concentrically, a plurality of vents are arranged on the conductor rotor assembly, and a detachable exhaust fin is arranged on the conductor rotor assembly and at a position corresponding to the vents.

[0006] The permanent magnet rotor assembly comprises a permanent magnet disk, a permanent magnet ring is arranged on either side of the permanent magnet disk, and the permanent magnet disk is arranged on the load shaft;

[0007] The conductor rotor assembly comprises a conductor disk, an outer conductor ring and an inner conductor ring are concentrically arranged on any one side of the conductor disk, and the conductor disk is arranged on the motor input shaft;

[0008] The permanent magnetic ring is arranged between the outer conductor ring and the inner conductor ring and both have a gap, the vent is arranged on the conductor disk, and the exhaust fin is arranged on the conductor disk by bolts and covers the vent;

[0009] The exhaust fin plate is an outer cover with an open bottom, and an opening is provided on one side of the outer cover away from the axis of the conductor disk. In this way, a cooling air path can be formed inside the permanent magnet speed regulator, and the rapid flow of air takes away the heat, reduces the temperature of the permanent magnet, plays a significant heat dissipation effect, improves the adaptability of the air-cooled permanent magnet speed regulator to high-power equipment, prolongs the service life of the permanent magnet speed regulator, and enhances the stability of the product.

[0010] A partition is arranged in the middle of the outer cover, and the partition is arranged in the middle of the vent, so that multiple heat dissipation air paths can be added.

[0011] The vent and the outer cover are both fan-shaped rings. Other shapes, such as rectangular or cylindrical, may also be used. The fan-shaped ring is the best because the baffles on both sides of the fan-shaped ring are inclined and have an angle to reduce wind resistance.

[0012] The permanent magnetic disk is provided with a plurality of ventilation holes, which can increase the heat dissipation effect of the entire device, and the ventilation holes on the conductor disk can correspond to the ventilation holes on the permanent magnetic disk.

[0013] A plurality of heat sinks are arranged on the outer side of the outer conductor ring and the inner side of the inner conductor ring to further enhance the heat dissipation effect.

[0014] A shell is arranged outside the conductor disk and the permanent magnetic disk, and the shell includes a plurality of annular plates, a plurality of rods are arranged between the annular plates, and an angle is formed between adjacent rods. A windshield is arranged on the annular plate close to the conductor disk, and any of the annular plates is arranged on the load shaft through bearing 2. The windshield can reduce the influence of wind on the permanent magnetic ring, the outer conductor ring and the inner conductor ring. The rods are distributed in the shape of fan blades, which can increase the wind speed and reduce the resistance.

[0015] The speed regulating mechanism may adopt the existing technology, or may adopt the following mechanism, wherein the speed regulating mechanism is arranged on the annular plate, the speed regulating mechanism is far away from the permanent magnetic disk, a rotating shaft is rotatably connected to the annular plate, two rocker arms are arranged on the rotating shaft, and the outer ends of the rocker arms are hinged to one end of the connecting rod;

[0016] It also includes a sliding sleeve, on which a bearing 1 is arranged, the other end of the connecting rod is hinged on the outer sleeve of the bearing 1, and the permanent magnetic disk is arranged on the sliding sleeve;

[0017] The annular plate is arranged on the load shaft through bearing 2 and the two rocker arms are located on both sides of the load shaft. A power mechanism is arranged at either end of the rotating shaft. The power mechanism can be a manual rotating wheel or a motor with a reducer. The shaft and the permanent magnetic disk and the conductor disk can be connected by a key.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the exhaust fins have high heat dissipation efficiency, simple structure, easy installation, and little impact on the operation of the permanent magnet speed regulator. The structure is installed on the conductor disk, and the vents are arranged on the conductor disk. When the motor drives the conductor disk to rotate, the exhaust fins rotate at the same time. Due to the action of centrifugal force, the heat generated during the operation of the permanent magnet speed regulator can be absorbed through the vents, thereby reducing the temperature of the magnet. The heat dissipation fins have a very obvious effect on discharging the heat generated during the operation of the permanent magnet speed regulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0020] Figure 2 It is a schematic diagram of the structure of the conductor rotor assembly and the exhaust fin plate.

[0021] Figure 3 It is a schematic diagram of the structure of the conductor rotor assembly, the permanent magnet rotor assembly and the speed regulating mechanism.

[0022] Figure 4 It is a schematic diagram of the structure of the shell.

[0023] Among them, the figure markings are: 1, load shaft; 2, motor input shaft; 3, conductor rotor assembly; 4, permanent magnet rotor assembly; 5, speed control mechanism; 6, exhaust fin; 7, shell; 301, conductor disk; 302, outer conductor ring; 303, vent; 304, heat sink; 305, inner conductor ring; 401, permanent magnet disk; 402, permanent magnet ring; 501, rotating shaft; 502, bearing seat; 503, rocker arm; 504, connecting rod; 505, sleeve; 506, bearing one; 507, bearing two; 601, cover; 602, partition; 701, annular plate; 702, rod; 703, wind shield. DETAILED DESCRIPTION

[0024] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0025] See also Figure 1-Figure 4 A permanent magnet speed regulator with a heat dissipation structure is characterized in that it includes a permanent magnet rotor assembly 4 arranged on a load shaft 1, a conductor rotor assembly 3 arranged on a motor input shaft 2, and a speed regulating mechanism 5, the permanent magnet rotor assembly 4 and the conductor rotor assembly 3 are concentrically arranged, a plurality of vents 303 are arranged on the conductor rotor assembly 3, and a detachable exhaust fin plate 6 is arranged on the conductor rotor assembly 3 and at a position corresponding to the vents 303.

[0026] The permanent magnet rotor assembly 4 includes a permanent magnet disk 401, a permanent magnet ring 402 is arranged on either side of the permanent magnet disk 401, and the permanent magnet disk 401 is arranged on the load shaft 1;

[0027] The conductor rotor assembly 3 comprises a conductor disk 301, an outer conductor ring 302 and an inner conductor ring 305 are concentrically arranged on any side of the conductor disk 301, and the conductor disk 301 is arranged on the motor input shaft 2;

[0028] The permanent magnet ring 402 is arranged between the outer conductor ring 302 and the inner conductor ring 305 and both are spaced apart. The vent 303 is arranged on the conductor disk 301. The exhaust fin plate 6 is arranged on the conductor disk 301 by bolts and covers the vent 303.

[0029] The exhaust fin plate 6 is an outer cover 601 with an open bottom, and an opening is provided on one side of the outer cover 601 away from the axis of the conductor disk 301. In this way, a cooling air path can be formed inside the permanent magnet speed regulator, and the rapid flow of air takes away the heat, reduces the temperature of the permanent magnet, plays a significant heat dissipation effect, improves the adaptability of the air-cooled permanent magnet speed regulator to high-power equipment, prolongs the service life of the permanent magnet speed regulator, and enhances the stability of the product.

[0030] A partition plate 602 is disposed in the middle of the outer cover 601, and the partition plate 602 is disposed in the middle of the vent 303. In this way, multiple heat dissipation air paths can be added.

[0031] The vent 303 and the outer cover 601 are both fan-shaped rings. Other shapes, such as rectangular or cylindrical, may also be used. The fan-shaped ring is the most preferred because the baffles on both sides of the fan-shaped ring are inclined and have an angle to reduce wind resistance.

[0032] The permanent magnetic disk 401 is provided with a plurality of vents to increase the heat dissipation effect of the entire device. The vents 303 on the conductor disk 301 may correspond to the vents on the permanent magnetic disk 401 .

[0033] A plurality of heat sinks 304 are disposed on the outer side of the outer conductor ring 302 and the inner side of the inner conductor ring 305 to further enhance the heat dissipation effect.

[0034] A housing 7 is provided outside the conductor disk 301 and the permanent magnet disk 401. The housing 7 includes a plurality of annular plates 701. A plurality of rods 702 are provided between the annular plates 701. An angle is formed between adjacent rods 702. A windshield 703 is provided on the annular plate close to the conductor disk 301. Any annular plate 701 is provided on the load shaft 1 through a bearing 507. The windshield 703 can reduce the influence of wind on the permanent magnet ring 402, the outer conductor ring 302 and the inner conductor ring 305. The rods 702 are distributed in a fan-blade shape, which can increase the wind speed and reduce the resistance.

[0035] The speed regulating mechanism 5 can adopt the existing technology or the following mechanism. The speed regulating mechanism 5 is arranged on the annular plate, and the speed regulating mechanism 5 is far away from the permanent magnetic disk 401. A rotating shaft 501 is rotatably connected to the annular plate 301 through a bearing seat 502. Two rocker arms 503 are arranged on the rotating shaft 501. The outer ends of the rocker arms 503 are hinged to one end of the connecting rod 504.

[0036] It also includes a sliding sleeve 505, on which a bearing 506 is disposed, the other end of the connecting rod 504 is hinged on the outer sleeve of the bearing 506, and the permanent magnetic disk 401 is disposed on the sliding sleeve 505;

[0037] The annular plate 301 is arranged on the load shaft 1 through the bearing 2 506 and the two rocker arms 503 are located on both sides of the load shaft 1. A power mechanism is arranged at either end of the rotating shaft 501. The power mechanism can be a manual rotating wheel or a motor with a reducer. The rotating shaft 501 rotates, and the rocker arm 503 and the connecting rod 504 drive the permanent magnetic disk 401 to make a linear motion along the axis. The permanent magnetic disk 401 moves axially, changing the coupling area between the permanent magnetic ring 402 and the outer conductor ring 301 and the inner conductor ring 305, thereby changing the torque transmitted between the conductor rotor assembly 3 and the permanent magnetic rotor assembly 4, and achieving the speed regulation effect.

[0038] Technical features not described in the present invention can be achieved through or by adopting existing technologies and will not be described in detail here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A permanent magnet speed regulator with a heat dissipation structure, characterized in that: It comprises a permanent magnet rotor assembly arranged on a load shaft, a conductor rotor assembly arranged on a motor input shaft and a speed regulating mechanism, wherein the permanent magnet rotor assembly and the conductor rotor assembly are arranged concentrically, the conductor rotor assembly is provided with a plurality of vents, and a detachable exhaust fin plate is arranged on the conductor rotor assembly and at a position corresponding to the vents; The permanent magnet rotor assembly comprises a permanent magnet disk, a permanent magnet ring is arranged on either side of the permanent magnet disk, and the permanent magnet disk is arranged on the load shaft; The conductor rotor assembly comprises a conductor disk, an outer conductor ring and an inner conductor ring are concentrically arranged on any one side of the conductor disk, and the conductor disk is arranged on the motor input shaft; The permanent magnetic ring is arranged between the outer conductor ring and the inner conductor ring and both have a gap, the vent is arranged on the conductor disk, and the exhaust fin is arranged on the conductor disk by bolts and covers the vent; The exhaust fin plate is an outer cover with an open bottom, and an opening is provided on a side of the outer cover away from the axis of the conductor disk; A partition is provided in the middle of the outer cover, and the partition is provided in the middle of the vent; The permanent magnetic disk is provided with a plurality of ventilation openings; A plurality of heat sinks are provided on the outer side of the outer conductor ring and the inner side of the inner conductor ring; A shell is arranged outside the conductor disk and the permanent magnet disk, and the shell includes a plurality of annular plates, a plurality of rods are arranged between the annular plates, and an angle is formed between adjacent rods. A windshield is arranged on the annular plate close to the conductor disk, and any of the annular plates is arranged on the load shaft through bearing 2.

2. The permanent magnet speed regulator with heat dissipation structure according to claim 1, characterized in that: The vent and the outer cover are both in a fan-shaped ring shape.

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