CN204967602U - Looks quadrature axis magnetism gear - Google Patents

Abstract

The utility model discloses an intersecting-axis magnetic gear transmission device. The intersecting-axis magnetic gear transmission device comprises an input turntable, an output turntable and an adjusting magnet, and the end face of the input turntable is evenly spaced with fan-shaped permanent magnets with _a number of pole pairs of N1. Sector-shaped permanent magnets with a pole pair number of N ₂ are evenly spaced on the end face of the output turntable, and the magnet adjustment consists of N ₁ + N ₂ magnetically conductive strips with a certain arc and N ₁ + N ₂ non-magnetic strips with a certain arc at even intervals The arrangement is circular. The intersecting shaft magnetic gear transmission device includes two layers of air gaps between the input turntable and the magnet adjustment body, and between the magnet adjustment body and the output turntable. The utility model can realize the motion and power transmission between the two intersecting shafts, and can realize the angle adjustment between the input shaft and the output shaft by adjusting the shape of the adjusting magnet, and has no contact, no friction, no lubrication, energy saving and environmental protection.

Description

A kind of intersecting shaft magnetic gear transmission device

technical field

The invention relates to a magnetic gear transmission device capable of realizing intersecting axis motion and power transmission, and belongs to the field of permanent magnet transmission.

Background technique

Bevel gear transmission is widely used in machine tools, vehicles, aerospace and other fields. It can realize motion and power transmission between intersecting axes, and plays a pivotal role in industry. However, due to problems such as processing, installation accuracy, and gear tooth contact, the transmission accuracy of bevel gear transmission is low, the vibration and noise are large, and the working life of the gear is short, which greatly limits its application in industry. Surface-mounted bevel magnetic gear transmission uses permanent magnets instead of mechanical gear teeth, no contact, no wear, greatly reduces the cost of processing and maintenance of transmission components, reduces vibration and noise, and overcomes many shortcomings of mechanical bevel gear transmission. However, since surface-mounted bevel gear transmission always only has a few pairs of permanent magnets involved in the transmission, the utilization rate of permanent magnets is low, the transferable torque is small, the torque density is low, and the application field is narrow.

Utility model content

In order to solve the above problems in the prior art, the utility model provides an intersecting axis magnetic gear transmission device. In addition to the advantages of traditional conical magnetic gear transmission without friction, wear and lubrication, the utility model also has the advantages of high utilization rate of permanent magnets, high transmission torque and high torque density.

The solution provided by the utility model to solve the technical problem is: a magnetic gear transmission device with intersecting shafts, which includes three parts: an input turntable, a magnet adjusting body and an output turntable. N ₁ pieces of N poles and N ₁ pieces of S pole sector-shaped permanent magnets are evenly spaced on the end face of the input turntable, the permanent magnets are axially magnetized, and the input turntable is fixed on the input shaft bracket through the support shaft, wherein N ₁ is generally 1 A positive integer of ~10. N ₂ pieces of N poles and N ₂ pieces of S pole sector-shaped permanent magnets are evenly spaced on the end face of the output turntable, the permanent magnets are axially magnetized, and the output turntable is fixed on the output shaft support through the support shaft, wherein N ₂ is generally 1 A positive integer of ~100. The magnet adjustment body is composed of N ₁ + N ₂ magnetic conductive strips and N ₁ + N ₂ non-magnetic conductive strips evenly spaced in a ring shape, and all magnetic conductive strips and non-magnetic conductive strips are made into fan-shaped strips with a certain arc , the tuning magnet is fixed on the base through a bracket, where N ₁ +N ₂ is generally a positive integer less than 100. The input turntable and the magnet adjustment body are opposite and coaxial, the output turntable and the magnet adjustment body are opposite and coaxial, and the sector-shaped permanent magnets on the input and output turntables have the same radial thickness and are equal to the radial thickness of the magnet adjustment body.

In the utility model, the intersecting axis magnetic gear transmission device can realize the transmission of motion and power between the intersecting axes, and can change the shape of the magnet adjusting body by changing the shape of the magnetic conductive strip and the non-magnetic conductive strip in the magnetic adjusting body, Then change the angle between the input and output shafts.

In the utility model, the intersecting shaft magnetic gear transmission device has two layers of air gaps, that is, the air gap formed between the input turntable and the adjusting magnet, and the air gap formed between the output turntable and the adjusting magnet.

The beneficial effects of the utility model are: the utility model can realize the movement and power transmission between two intersecting shafts, there is no contact, no wear and no lubrication between the components, and the utility model has high utilization rate of permanent magnets, large transferable torque, and overload protection. Advantages such as self-protection and no need for maintenance. The whole set of devices can change the ratio of input and output shaft speeds by changing the number of pole pairs of the permanent magnets on the input turntable and the output turntable, and the number of magnetically conductive and non-magnetically conductive strips in the magnet.

Description of drawings

Fig. 1 is a structural schematic diagram of an intersecting-axis magnetic gear transmission;

Fig. 2 is the top view of Fig. 1;

Fig. 3 is A-A sectional view of Fig. 1;

Fig. 4 is the B-B sectional view of Fig. 1;

Fig. 5 is a layout diagram of permanent magnets on the end face of the output turntable.

In Figure 1, Figure 3, and Figure 4, 1-base, 2-bolt, 3-bolt, 4-input shaft bracket, 5-bolt, 6-baffle plate, 7-input shaft, 8-shaft sleeve, 9 -key, 10-input turntable, 11-permanent magnet, 12-shaft end baffle, 13-bolt, 14-adjusting magnet support frame, 15-adjusting magnet, 16-adjusting magnet support frame, 17-permanent magnet, 18- Output turntable, 19-bolt, 20-shaft end baffle, 21-key, 22-output shaft bracket, 23-output shaft, 24-shaft sleeve, 25-baffle, 26-bolt, 27-bolt, 28-bolt , 29-adjustment magnet magnetic strip, 30-adjustment magnet non-magnetic strip.

detailed description

Example

Fig. 1 to Fig. 5 are a kind of intersecting shaft magnetic gear transmission device disclosed by the utility model, and described magnetic gear transmission device comprises three parts of input turntable, output turntable and magnet adjustment body, wherein:

The input turntable part is mainly composed of an input shaft support 4 , an input shaft 7 , a shaft sleeve 8 , an input turntable 10 and a permanent magnet 11 . The end face of the input turntable 10 is evenly spaced with sector-shaped permanent magnets 11 with N poles and S poles. The input turntable 10 is fixed on the input shaft 7 through the key 9 and the shaft end baffle 12, and the shaft end baffle 12 is fixed to the input turntable by bolts. 10, the input shaft 7 is placed on the input shaft support 4 through the bushing 8, the baffle plate 6 is fixed on the input shaft support 4 by the bolt 5 to realize the end sealing of the input shaft 7, and the input shaft support 4 is fixed on the base by the bolt 2 1 on.

The magnet adjustment part is mainly composed of the magnet adjustment body 15 , the magnet adjustment body support frames 14 and 16 . The magnet adjustment body 15 is made up of the magnetic conduction strip 29 and the non-magnetic conduction strip 30, and the main part of the non-magnetic conduction strip 29 is formed by injection molding of non-magnetic conduction engineering plastics, and is fixed on the on base 1.

The output turntable part is mainly composed of a permanent magnet 17 , an output turntable 18 , an output shaft support 22 and an output shaft 23 . The end surface of the output turntable 18 is evenly spaced with sector-shaped permanent magnets 17 with N poles and S poles. The output turntable 18 is fixed on the output shaft 23 through the key 19 and the shaft end baffle 20, and the shaft end baffle 20 is fixed to the output turntable 18 by bolts. Above, the output shaft 23 is placed on the output shaft support 22 through the bushing 24, the baffle plate 25 is fixed on the output shaft support 22 by bolts to realize the end sealing of the output shaft 23, and the output shaft support 22 is fixed on the base by bolts 28 .

The magnet adjustment body is bent into a certain radian to realize the angular deviation between the input shaft and the output shaft, and the number of magnetic conductive strips and non-magnetic conductive strips in the magnetic adjustment body is equal, which is equal to the number of pole pairs of the permanent magnet on the input turntable and the output turntable The sum of the pole pairs N ₁ and N ₂ of the upper permanent magnet, that is, N ₁ +N ₂ . .

working principle

The intersecting axis magnetic gear transmission adopts the magnetic field modulation mechanism, and uses the adjusting magnet to realize the magnetic field coupling transmission between the permanent magnets with different pole pairs. When the input turntable rotates together with the input shaft, a magnetic field with a main harmonic order of N ₁ will be formed in the air gap between the input turntable 10 and the magnet 15, and the magnetic field will be passed through the magnet adjuster whose number of pole pieces is N ₁ +N ₂ After 15 modulation, a magnetic field with a main harmonic order of _N2 is formed in the air gap between the tuning magnet 15 and the output turntable 18, which is equal to the number of pole pairs of the permanent magnet 17 on the end face of the output turntable 18, thereby realizing equal magnetic pole coupling transmission. Realize the rotation of the output shaft and the transmission of motion and power.

The ratio of the speed between the input shaft and the output shaft in the magnetic gear transmission, that is, the transmission ratio is

i=N ₂ /N ₁

By changing the number of pole pairs of the permanent magnets 11 and 17 on the input and output turntables, and adjusting the number of magnetically conductive strips and non-magnetically conductive strips in the magnets, the transmission ratio of the transmission can be changed to realize the adjustment of the output shaft speed.

Claims (4)

1. A magnetic gear transmission with intersecting shafts, comprising an input turntable and an output turntable with sector-shaped permanent magnets arranged on a magnet, an end face, characterized in that: a. N ₁ pieces of N poles and N ₁ pieces of S pole sector _- shaped permanent magnets are evenly spaced on the end face of the input turntable. It is a positive integer from 1 to 10; b. N ₂ pieces of N poles and N ₂ pieces of S pole sector-shaped permanent magnets are evenly spaced on the end face of the output turntable, and the permanent magnets are axially magnetized, and the output turntable is fixed _on the output shaft support through the support shaft, wherein N It is a positive integer ranging from 1 to 100; c. The magnet adjustment body is composed of N ₁ + N ₂ magnetic strips and N ₁ + N ₂ non-magnetic strips evenly spaced in a ring shape, and all the magnetic strips and non-magnetic strips are made with a certain arc Fan-shaped bar, the magnet is fixed on the base through the bracket, where N ₁ +N ₂ is generally a positive integer less than 100; d. The input turntable and the magnet adjustment body are opposite and coaxial, the output turntable and the magnet adjustment body are opposite and coaxial, and the radial thickness of the fan-shaped permanent magnet on the input and output turntables is equal to that of the magnet adjustment body. 2. The cross-axis magnetic gear transmission according to claim 1, characterized in that: the magnetic gear transmission has two layers of air gaps, that is, the air gap formed between the input turntable and the magnet adjustment body and the output turntable and the magnet adjustment body air gap formed between. 3. The intersecting shaft magnetic gear transmission according to claim 1, characterized in that: changing the number of pole pairs of the permanent magnets on the input turntable and the output turntable, and the number of magnetically conductive strips and non-magnetically conductive strips in the magnet adjustment body, can Realize the change of input and output shaft rotational speed ratio. 4. The intersecting axis magnetic gear transmission device according to claim 1, characterized in that: changing the shape of the magnetically conductive strip and the non-magnetically conductive strip in the magnet adjustment body, thereby changing the shape of the magnet adjustment body, can change the distance between the input and output shafts. angle.