CN204481668U - Three cartridge type permanent-magnet speed governors - Google Patents

Abstract

The utility model discloses a kind of three cartridge type permanent-magnet speed governors, comprise the first rotary components, the second rotary components that coaxial line is installed, also comprise lash adjusting device, described first rotary components comprises power shaft, and the two cylinders be arranged on power shaft, described pair of cylinder comprises spoke, and is arranged on the exterior cylinder at spoke surrounding outer rim place, exterior cylinder of being separated by is provided with inner cylinder body, on described exterior cylinder inner surface, on the outer surface of described inner cylinder body, be all provided with electric conductor; Described second rotary components is a single cylinder made with non-magnet material, and the barrel of described single cylinder is equipped with permanent magnet, and described permanent magnet circumference presses N pole, S pole alternately, and permanent magnet magnetic number of poles is even number, axial same polarity arrangement; The utility model adopts Dual-barrel-shaped structure, and surrounded wherein by permanent magnetism, magnet is two-sided has an effect, and produces eddy current to copper conductor, and induced field strengthens, and improves magnetic field intensity and driving torque.

Description

Three barrel permanent magnet governor

technical field

The invention relates to a mechanical power transmission system in electromechanical engineering, relates to a permanent magnet coupling eddy current governor, in particular to a novel double-gap adjustable three-barrel permanent magnet governor.

Background technique

The adjustable magnetic coupler (CN1248354A) was invented by Magnadrive in the United States in 1999. In the transmission system composed of load equipment and motor, it has realized the functions of soft start, adjustable speed and overload protection. At present, there are no more than two types of permanent magnet governors for online applications: disc structure (axial type) and barrel structure (radial type). The axial permanent magnet governor adjusts the axial distance between the driving part and the driven part, that is, adjusts the air gap; the radial permanent magnet governor also adjusts the axial displacement to change the coupling area.

At present, the disc type and barrel type permanent magnet speed governors used online have fully demonstrated their respective advantages. However, there are different problems for large governors. In order to obtain high power and high torque, the diameter of the disc speed governor is selected too large, and the high rotational speed, high peripheral speed, high vibration, and large swing are also large. The axial dimension of the barrel speed governor is very long, making it difficult to adjust the speed.

The present invention improves the deficiencies in the existing products, and proposes a new type of permanent magnet governor—three-tube permanent magnet governor. The double-sided effect produces eddy current on the copper conductor, the induced magnetic field is enhanced, and the magnetic field strength and transmission torque are improved.

Contents of the invention

The purpose of the present invention is to provide a three-barrel permanent magnet speed governor, which adopts a double-barrel structure, encloses the permanent magnet, acts on both sides of the magnet, generates an eddy current to the copper conductor, enhances the induced magnetic field, and improves the magnetic field strength and transmission torque.

For realizing the above object, technical scheme of the present invention is:

The three-barrel permanent magnet speed governor includes a first rotating assembly and a second rotating assembly installed on a coaxial line, and also includes a gap adjustment device connected to the first rotating assembly or the second rotating assembly, and is characterized in that:

The first rotating assembly includes an input shaft, and a double cylindrical body arranged on the input shaft, the double cylindrical body includes a spoke, and an outer cylindrical body arranged at an outer edge around the spoke, separated from the outer cylindrical body An inner cylinder is provided, and conductors are arranged on the inner surface of the outer cylinder and the outer surface of the inner cylinder;

The second rotating assembly is a single cylinder made of non-magnetic material. The wall of the single cylinder is in the shape of a screen, on which permanent magnets are installed, and the circumference of the permanent magnets is N The poles and S poles are arranged alternately, the number of permanent magnet poles is even, and the axial direction is arranged with the same polarity;

During installation, the second rotating assembly is socketed with the first rotating assembly, that is, the single cylinder is socketed between the inner cylinder and the outer cylinder, forming a uniform air gap therebetween.

As a further preference to the present invention, any one of the first rotating assembly and the second rotating assembly can be used as a master, and the other as a slave.

As a further preference for the present invention, the spokes, the outer cylinder and the inner cylinder are of a split or integral structure.

As a further preference for the present invention, the conductor can have one or more segments in the axial direction, and when the multiple segments are arranged at intervals, the distance between them is equal to the axial dimension of the magnet.

As a further preference for the present invention, the permanent magnet can be one or more segments in the axial direction, wherein the plurality of segments are arranged at intervals, and the spacing is equal to the axial dimension of the conductor.

As a further preference to the present invention, the permanent magnet and the single cylinder are mechanically connected or embedded and fixed.

As a further preference to the present invention, the gap adjusting device causes axial displacement of the first rotating assembly or the second rotating assembly, changes the coupling area between the permanent magnet and the conductor, and realizes the change of the output speed and torque of the load shaft.

As a further preference for the present invention, sleeve cups are respectively provided on the outside of the input shaft of the first rotating assembly and the output shaft of the second rotating assembly through rolling bearings, and the other end of the output shaft of the second rotating assembly slides Bearings are supported within the double cylinders of the first rotating assembly.

To further optimize the present invention, it also includes a water cooling device, the water cooling device includes a water tank, a cooler is arranged in the water tank, a water inlet pipe and a water outlet pipe are provided on the outer wall, and a valve is provided on the water outlet pipe, A filter and a magnetic filter are arranged between the water inlet pipe and the water tank.

Compared with prior art, the beneficial effect of the present invention:

In the present invention, the first rotating assembly adopts a double-tube structure, surrounded by permanent magnets, which have double suction effects on the inner and outer iron tube walls; in addition, a layer of conductor plates are installed on the inner side of the outer tube and the outer side of the inner tube to drive For any rotating component, the conductor plate cuts the magnetic field lines relative to the multi-pole magnetic ring, and the magnet acts on both sides, and an induced current (eddy current) will be generated on the surface of the conductor plate, and the induced current will generate an induced magnetic field. The combined effect of the permanent magnetic field and the induced magnetic field makes the driven rotor generate a torque that is the same as that of the driving rotor, thereby driving the driven rotor to rotate in the same direction and realizing the non-contact transmission of torque. The invention changes the axial position of the double barrel and the middle cylinder, changes the size of the induced magnetic field, and realizes the change of the output speed.

From the finite element analysis of the magnetic field, it can be seen that the magnetic force lines acting on the copper conductor are obviously dense, and the magnetic force lines acting on the inner and outer cylinders are all perpendicular to the conductor layer. The magnetic field strength and magnetic induction intensity at the air gap are significantly higher than those of the disc type and the double-tube type; and because there are two layers of conductors in the structure, the magnetic induction intensity generated by the rotation of the conductor rotor is higher than that of the double-tube type. The multiplier increases, so that the magnetic torque that drives the permanent magnet rotor to rotate increases, and the output torque increases. It can be considered in the present invention that the structural design of the three-barrel permanent magnet speed governor makes reasonable use of space and is compact in structure, and is especially suitable for speed-regulating transmission of high-power machinery.

Concrete scheme of the present invention has 2 kinds:

The first solution: the first rotating component in the present invention is connected to the prime mover for in-situ rotation, while the second rotating component is connected to the equipment and can move axially to change the speed of the load equipment, so that the speed regulating device is located on the load side.

The second solution: In the present invention, the second rotating assembly is actively connected with the prime mover to realize in-situ rotation, while the first rotating assembly moves axially to change the speed of the load equipment, so that the speed regulating device is located on the prime mover side.

It can be known from the above that the present invention adopts a double-tube structure, which surrounds the permanent magnet, and the magnet acts on both sides to generate eddy current to the copper conductor, and the induced magnetic field is enhanced, which improves the magnetic field strength and transmission torque.

In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific examples.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

Fig. 2 is a structural schematic diagram of the present invention.

Fig. 3 is a structural schematic diagram of the water cooling device in the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Referring to accompanying drawings 1, 2 and 3, this embodiment discloses a three-barrel permanent magnet governor, including a first rotating assembly and a second rotating assembly coaxially installed, and also includes a The gap adjustment device connected with the rotating assembly or the second rotating assembly is characterized in that: the first rotating assembly includes an input shaft 1, and a double cylinder 2 arranged on the input shaft 1, and the double cylinder 2 includes Wheel spokes, and the outer cylindrical body 3 that is arranged on the outer edge around the wheel spokes, the outer cylindrical body 3 is provided with an inner cylindrical body 4, on the inner surface of the outer cylindrical body 3, the inner cylindrical body 4 Conductors 5 are arranged on the outer surface of the outer surface, and the second rotating assembly is a single cylinder 6 made of non-magnetic material, and the wall of the single cylinder 6 is screen-shaped, and its A permanent magnet 7 is housed on it, and the circumferential direction of the permanent magnet 7 is arranged alternately with N poles and S poles, and the number of magnetic poles of the permanent magnet 7 is an even number, and the axial direction is arranged with the same polarity; when installing, the second rotating assembly and the The first rotating assembly is socketed, that is, the single cylinder 6 is socketed between the inner cylinder 4 and the outer cylinder 3, and a uniform air gap is formed therebetween.

In the present invention, any one of the first rotating assembly and the second rotating assembly can be used as a master, and the other as a slave.

In order to meet better production requirements, the spokes, the outer cylindrical body 3 and the inner cylindrical body 4 in the present invention are in a split or integral structure.

The conductor 5 described in the present invention can be one section or multiple sections in the axial direction. When multiple sections are arranged at intervals, the spacing is equal to the axial size of the magnet. The permanent magnet 7 in the present invention can be one section or multiple sections in the axial direction. , in which multiple sections are arranged at intervals, and the spacing thereof is equal to the axial dimension of the conductor, and the permanent magnet 7 and the single cylinder 6 are mechanically connected or inlaid and fixed.

The gap adjustment device in the present invention causes the first rotating component or the second rotating component to generate axial displacement, changes the coupling area between the permanent magnet 7 and the conductor 5, and realizes the change of the output speed and torque of the load shaft.

In the present invention, sleeve cups 10 are respectively provided through rolling bearings 9 outside the input shaft 1 of the first rotating assembly and outside the output shaft 8 of the second rotating assembly. The other end of the output shaft 8 of the second rotating assembly The sliding bearing 11 is supported in the double cylinder body 2 of the first rotating assembly. Such a structural setting can realize coaxial installation very well, improve installation efficiency, and at the same time greatly facilitate assembly, disassembly and adjustment of axial displacement. .

Also comprise water-cooling device among the present invention, described water-cooling device comprises water tank 12, is provided with cooler 13 in described water tank 12, is provided with water inlet pipe 14 and water outlet pipe 15 on the outer wall, is provided with on described water outlet pipe 15 There is a valve 16, and a filter 17 and a magnetic filter 18 are arranged between the water inlet pipe 14 and the water tank 12. When the water cooling device in the present invention is actually used, the rotating assembly can be cooled at the same time. The outer rotating assembly can be directly sprayed with nozzles, while the inner rotating assembly enters through the circular holes of the spokes, which requires openings on the spokes for the water inlet pipe 14 . Of course, the water-cooling device of the present invention is not limited thereto, and fans can also be used to cool down by blowing air.

In the present invention, when the permanent magnet 7 moves back and forth in the axial direction under the action of the regulator, the meshing area between the permanent magnet 7 and the conductor 5 changes. The meshing area is large, the transmitted torque is large, and the load speed is high; the meshing area is small, the transmitted torque is small, and the load speed is low; the meshing area is zero, the transmission torque is zero, the permanent magnet rotor and the conductor rotor are completely disengaged, and the permanent magnet rotor speed is zero, the load speed is also zero.

When the present invention is started, the axial displacement between the main and driven rotors can be pulled to the maximum through the speed regulating device, and the conductor 5 and the permanent magnet 7 are disengaged to realize zero-load startup; after the motor starts, slowly increase the conductivity The coupling area between the body 5 rotor and the permanent magnet 7 accelerates the load gradually, makes the whole starting process stable, and the impact is small, and the soft start of the motor is realized. After the motor runs stably, the position of the main and driven rotors is adjusted to the predetermined position through the speed regulating device.

When the equipment is overloaded or stalled, the torque signal is fed back to the controller, and the three-tube permanent magnet speed governor can automatically completely disconnect the torque transmission from the motor to the equipment. At this time, the motor runs without load and the equipment stops, which can Completely eliminate system damage caused by overloading.

In the actual operation process, according to the flow, pressure, and torque signals fed back to the controller, the speed control system changes the distance between the driving rotor and the driven rotor at any time to achieve variable speed control of the output speed, power and torque.

The above is only an embodiment of the present invention, not a restriction on the design of this case, and all equivalent changes made according to the key points of the design of this case all fall into the scope of protection of this case.

Claims (9)

1. three cartridge type permanent-magnet speed governors, comprise the first rotary components, the second rotary components that coaxial line is installed, also comprise the lash adjusting device be connected with the first rotary components or the second rotary components, it is characterized in that:

Described first rotary components comprises power shaft, and the two cylinders be arranged on power shaft, described pair of cylinder comprises spoke, and be arranged on the exterior cylinder at spoke surrounding outer rim place, exterior cylinder of being separated by is provided with inner cylinder body, on described exterior cylinder inner surface, on the outer surface of described inner cylinder body, be all provided with electric conductor;

Described second rotary components is a single cylinder made with non-magnet material, the barrel of described single cylinder is mesh-like, it is equipped with permanent magnet, and described permanent magnet circumference presses N pole, S pole alternately, and permanent magnet magnetic number of poles is even number, axial same polarity arrangement;

When mounted, described second rotary components and described first rotary components are socketed, and namely single cylinder cover is received between inner cylinder body and exterior cylinder, forms uniform air-gap between the two.

2. three cartridge type permanent-magnet speed governors according to claim 1, is characterized in that: any one in described first rotary components, described second rotary components can as initiatively, and another is as driven.

3. three cartridge type permanent-magnet speed governors according to claim 1, is characterized in that: described spoke and described exterior cylinder, described inner cylinder body are split type or integral structure.

4. three cartridge type permanent-magnet speed governors according to claim 1, is characterized in that: described electric conductor can be axially one section can be also multistage, and when wherein multistage is spaced, its spacing equals magnet axial size.

5. three cartridge type permanent-magnet speed governors according to claim 1, is characterized in that: described permanent magnet can be also multistage being axially one section, and wherein multistage is spaced, and its spacing equals conductor axial dimension.

6. three cartridge type permanent-magnet speed governors according to claim 1, is characterized in that: for be mechanically connected or to inlay fixing between described permanent magnet and single cylinder.

7. three cartridge type permanent-magnet speed governors according to claim 1, it is characterized in that: described lash adjusting device makes the first rotary components or the second rotary components produce axial displacement, change the coupling area between permanent magnet and electric conductor, realize bearing axle output speed torque change.

8. three cartridge type permanent-magnet speed governors according to claim 1, it is characterized in that: outside at the power shaft of described first rotary components, be provided with a set of cups in the output shaft outside of described second rotary components each via rolling bearing, the output shaft other end of described second rotary components by sliding supported condition in two cylinders of described first rotary components.

9. three cartridge type permanent-magnet speed governors according to claim 1, it is characterized in that: also comprise water cooling plant, described water cooling plant comprises water tank, in described water tank, cooler is set, outer wall is provided with water inlet pipe and water goes out pipe, go out on pipe to be provided with valve at described water, between described water inlet pipe and described water tank, be provided with filter and magnetic filter.