A sleeve type magnetic clutch

Abstract

The invention discloses a sleeve-type magnetic clutch, comprising a conductor rotor, a permanent magnet rotor, an electromagnetic assembly, and an output shaft; the conductor rotor comprises a conductor cylinder and a conductor ring; the permanent magnet rotor comprises a magnetic seat, a radial permanent magnet, and an axial permanent magnet; the electromagnetic assembly comprises an electromagnetic coil; the electromagnetic assembly and the conductor rotor are respectively arranged on both sides of the permanent magnet rotor, the conductor rotor and the permanent magnet rotor are concentrically sleeved, the conductor ring is opposite to the radial permanent magnet, and the electromagnetic coil is directly opposite to the axial permanent magnet; the permanent magnet rotor is connected to the output shaft, can drive the output shaft to rotate and can move along the output shaft; when working, the electromagnetic assembly is energized, when the direction of the generated magnetic field is opposite to that of the axial permanent magnet, the permanent magnet rotor is pushed toward the conductor rotor, and the conductor rotor transmits power to the permanent magnet rotor through the magnetic field; when the direction of the generated magnetic field is the same as that of the axial permanent magnet, the permanent magnet rotor is attracted to the electromagnetic coil, and the power transmission is disconnected; the invention has a simple structure, high reliability, low maintenance and repair costs, and is suitable for popularization and use.

Description

Technical Field

[0001] The invention relates to the field of clutches, and in particular to a magnetic clutch. Background Art

[0002] Electromagnetic clutch can realize the transmission and disconnection of power between the prime mover and the load, and is widely used in the manufacturing industry. The clutch plate and the clutch hub are controlled by the electromagnetic coil to realize the transmission and disconnection of power between the prime mover and the load. However, the clutch plate and the clutch hub are driven by friction. After long-term operation, the clutch plate will wear out and need to be stopped for replacement, which affects the continuous operation of the system and increases maintenance costs. Summary of the invention

[0003] The purpose of the present invention is to provide a magnetic clutch in view of the problems existing in the prior art, and its purpose is to simplify the structure of the clutch, improve reliability, and reduce maintenance and repair costs.

[0004] The purpose of the present invention is to be solved by the following technical solutions:

[0005] A sleeve-type magnetic clutch comprises a conductor rotor, a permanent magnet rotor, an electromagnetic assembly, and an output shaft, wherein the conductor rotor comprises a conductor cylinder and a conductor ring arranged on the inner circumferential surface of the conductor cylinder; the permanent magnet rotor comprises a magnetic seat, a radial permanent magnet, and an axial permanent magnet; the electromagnetic assembly comprises an electromagnetic coil; the electromagnetic assembly and the conductor rotor are respectively arranged on both sides of the permanent magnet rotor, the conductor rotor and the permanent magnet rotor are concentrically sleeved and separated by an air gap, the conductor ring is opposite to the radial permanent magnet, and the electromagnetic coil is opposite to the axial permanent magnet; the permanent magnet rotor is slidably connected to the output shaft, can drive the output shaft to rotate synchronously and can move along the axial direction of the output shaft; when working, the electromagnetic assembly is energized, when the direction of the magnetic field generated by the electromagnetic coil is opposite to that of the axial permanent magnet, the permanent magnet rotor is pushed toward the conductor rotor, so that the conductor ring is opposite to the radial permanent magnet, and the conductor rotor transmits power to the permanent magnet rotor through the magnetic field; when the direction of the magnetic field generated by the electromagnetic coil is the same as that of the axial permanent magnet, the permanent magnet rotor is attracted to the electromagnetic coil along the output shaft, so that the conductor ring is staggered with the radial permanent magnet, and the power transmission between the conductor rotor and the permanent magnet rotor is disconnected.

[0006] The output shaft is provided with a limit plate and a limit step. The limit plate limits the axial position of the permanent magnet rotor on the output shaft when it approaches the conductor rotor, and the limit step limits the axial position of the permanent magnet rotor on the output shaft when it approaches the electromagnetic coil.

[0007] The electromagnetic assembly is fixed, the electromagnetic coil is electrically connected to the DC power supply through a wire, and the magnetic field direction of the electromagnetic coil is changed by controlling the current direction of the power supply. The electromagnetic field direction of the electromagnetic coil is along the axial direction.

[0008] The electromagnetic assembly also includes a commutator and a brush; the electromagnetic coil is fixedly connected to the output shaft and rotates with the output shaft; the commutator is fixedly connected to the output shaft; the electromagnetic coil is electrically connected to the commutator; the commutator is arranged in the brush and is in frictional contact with the brush; the brush is fixed and electrically connected to a DC power supply.

[0009] The radial permanent magnets are composed of an even number of magnets, the direction of the magnetic field formed is radial, and they are evenly arranged in the circumferential direction on the outer circumferential surface of the magnetic base.

[0010] The axial permanent magnet is composed of at least one permanent magnet, the magnetic field direction is along the axial direction, and the magnetic field direction is consistent, and it is evenly arranged along the circumferential direction on the end surface of the magnetic seat.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] The sleeve-type magnetic clutch electromagnetic assembly of the present invention generates a magnetic field when energized, so that the permanent magnet rotor moves axially. When the electromagnetic assembly generates a repulsive force on the permanent magnet rotor, the conductor rotor meshes with the permanent magnet rotor, and the conductor rotor transmits power to the permanent magnet rotor through the coupling magnetic field; when the electromagnetic assembly generates an attractive force on the permanent magnet rotor, the conductor rotor and the permanent magnet rotor are staggered, and the conductor rotor cannot transmit power to the permanent magnet rotor, thereby disconnecting the power transmission between the prime mover and the load; in the meshing state, the power transmission between the prime mover and the load is achieved through the magnetic field, without mechanical contact and wear; the clutch of the power transmission is also achieved through the magnetic field, with a simple structure and convenient control; the overall reliability is high, the maintenance and repair cost is low, the service life is long, and it is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Attached Figure 1 It is a schematic structural diagram of the engagement state of the sleeve type magnetic clutch embodiment 1 of the present invention;

[0014] Attached Figure 2 It is a schematic structural diagram of a sleeve-type magnetic clutch embodiment 1 of the present invention in a disengaged state;

[0015] Attached Figure 3 It is a schematic structural diagram of the engagement state of the sleeve type magnetic clutch embodiment 2 of the present invention;

[0016] Among them: 1-conductor rotor; 11-conductor cylinder; 12-conductor ring; 2-permanent magnet rotor; 21-magnetic seat; 22-radial permanent magnet; 23-axial permanent magnet; 3-electromagnetic assembly; 31-electromagnetic coil; 32-conducting wire; 33-commutator; 34-brush; 4-output shaft; 41-limiting plate; 42-limiting step. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Embodiment 1: Figure 1 and Figure 2 As shown, a sleeve-type magnetic clutch comprises a conductor rotor (1), a permanent magnet rotor (2), an electromagnetic assembly (3), and an output shaft (4).

[0019] The conductor rotor (1) comprises a conductor cylinder (11) and a conductor ring (12) arranged on the inner circumferential surface of the conductor cylinder (11).

[0020] The permanent magnet rotor (2) comprises a magnetic base (21), radial permanent magnets (22) and axial permanent magnets (23). The radial permanent magnets (22) are composed of an even number of magnets, the magnetic field direction of which is radial, and are evenly arranged in the circumferential direction on the outer circumferential surface of the magnetic base (21). The axial permanent magnets (23) are composed of at least one permanent magnet, the magnetic field direction of which is axial, and the magnetic field directions are consistent, and are evenly arranged in the circumferential direction on the end surface of the magnetic base (21).

[0021] The electromagnetic assembly (3) comprises an electromagnetic coil (31) and a conducting wire (32).

[0022] A limit plate (41) and a limit step (42) are provided on the output shaft (4); the limit plate (41) limits the axial position of the permanent magnet rotor (2) on the output shaft (4) when the permanent magnet rotor (2) approaches the conductor rotor (1), thereby preventing the permanent magnet rotor (2) from rubbing against the conductor rotor (1); and the limit step (42) limits the axial position of the permanent magnet rotor (2) on the output shaft (4) when the permanent magnet rotor (2) approaches the electromagnetic coil (31), thereby preventing the permanent magnet rotor (2) from rubbing against the electromagnetic coil (31).

[0023] The electromagnetic assembly (3) and the conductor rotor (1) are respectively arranged on both sides of the permanent magnet rotor (2), the conductor rotor (1) and the permanent magnet rotor (2) are concentrically sleeved and separated by an air gap, the conductor ring (12) is opposite to the radial permanent magnet (22), the electromagnetic coil (31) is directly opposite to the axial permanent magnet (23), and the electromagnetic assembly is fixed. The permanent magnet rotor (2) is slidably connected to the output shaft (4), can drive the output shaft (4) to rotate synchronously and can move along the axial direction of the output shaft (4).

[0024] like Figure 1 The conductor rotor (1) is connected to the prime mover, and the output shaft (4) is connected to the load. When the sleeve-type magnetic clutch is working, if the prime mover is to transfer power to the load, the electromagnetic assembly (3) is energized, and the direction of the magnetic field generated by the electromagnetic coil (31) is opposite to that of the axial permanent magnet (23), pushing the permanent magnet rotor (2) toward the conductor rotor (1), so that the conductor ring (12) and the radial permanent magnet (22) are directly opposite, and the conductor rotor (1) transfers power to the permanent magnet rotor (2) through the magnetic field, and the permanent magnet rotor (2) then transfers power to the output shaft (4), and at this time, power can be transferred through the sleeve-type magnetic clutch.

[0025] like Figure 2When the sleeve-type magnetic clutch is in operation, if the prime mover is to transmit power to the load, the electromagnetic assembly (3) is powered in the opposite direction, and the direction of the magnetic field generated by the electromagnetic coil (31) is the same as that of the axial permanent magnet (23), so that the permanent magnet rotor (2) is attracted to the electromagnetic coil (31) along the output shaft (4), so that the conductor ring (12) and the radial permanent magnet (22) are offset, and the power transmission between the conductor rotor (1) and the permanent magnet rotor (2) is disconnected. At this time, the prime mover and the load are separated.

[0026] Embodiment 2: Figure 3 As shown, a sleeve-type magnetic clutch comprises a conductor rotor (1), a permanent magnet rotor (2), an electromagnetic assembly (3), and an output shaft (4).

[0027] The conductor rotor (1) comprises a conductor cylinder (11) and a conductor ring (12) arranged on the inner circumferential surface of the conductor cylinder (11).

[0028] The permanent magnet rotor (2) comprises a magnetic base (21), radial permanent magnets (22) and axial permanent magnets (23). The radial permanent magnets (22) are composed of an even number of magnets, the magnetic field direction of which is radial, and are evenly arranged in the circumferential direction on the outer circumferential surface of the magnetic base (21). The axial permanent magnets (23) are composed of at least one permanent magnet, the magnetic field direction of which is axial, and the magnetic field directions are consistent, and are evenly arranged in the circumferential direction on the end surface of the magnetic base (21).

[0029] The electromagnetic assembly (3) comprises an electromagnetic coil (31), a wire (32), a commutator (33) and a brush (34).

[0030] A limit plate (41) and a limit step (42) are provided on the output shaft (4); the limit plate (41) limits the axial position of the permanent magnet rotor (2) on the output shaft (4) when the permanent magnet rotor (2) approaches the conductor rotor (1), thereby preventing the permanent magnet rotor (2) from rubbing against the conductor rotor (1); and the limit step (42) limits the axial position of the permanent magnet rotor (2) on the output shaft (4) when the permanent magnet rotor (2) approaches the electromagnetic coil (31), thereby preventing the permanent magnet rotor (2) from rubbing against the electromagnetic coil (31).

[0031] The electromagnetic assembly (3) and the conductor rotor (1) are respectively arranged on both sides of the permanent magnet rotor (2), the conductor rotor (1) and the permanent magnet rotor (2) are concentrically sleeved and separated by an air gap, the conductor ring (12) is opposite to the radial permanent magnet (22), and the electromagnetic coil (31) is directly opposite to the axial permanent magnet (23). The permanent magnet rotor (2) is slidably connected to the output shaft (4), can drive the output shaft (4) to rotate synchronously and can move along the axial direction of the output shaft (4). The electromagnetic coil (31) is fixedly connected to the output shaft (4), the commutator (33) is fixedly arranged at the output end of the output shaft (1), and the brush (34) is fixedly arranged outside the sleeve-type magnetic clutch; the wire (32) is routed from the inside of the output shaft (4) and connects the electromagnetic coil (31) and the commutator (33); the commutator (33) is inserted into the brush (34) and is in frictional contact with the brush (34); the brush (34) is electrically connected to an external direct current power source; the commutator (33) and the brush (34) cooperate to ensure that the direct current power flowing through the electromagnetic coil (31) always maintains the same direction, thereby ensuring that the magnetic field generated by the electromagnetic coil (31) also always maintains the same direction.

[0032] During operation, the electromagnetic assembly (3) is energized. When the direction of the magnetic field generated by the electromagnetic coil (31) is opposite to that of the axial permanent magnet (23), the permanent magnet rotor (2) is pushed toward the conductor rotor (1), so that the conductor ring (12) and the radial permanent magnet (22) are directly opposite, and the conductor rotor (1) transmits power to the permanent magnet rotor (2) through the magnetic field. When the direction of the magnetic field generated by the electromagnetic coil (31) is the same as that of the axial permanent magnet (23), the permanent magnet rotor (2) is attracted toward the electromagnetic coil (31) along the output shaft (4), so that the conductor ring (12) and the radial permanent magnet (22) are offset, and the power transmission between the conductor rotor (1) and the permanent magnet rotor (2) is disconnected.

[0033] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention; any technology not involved in the present invention can be realized by existing technologies.

Claims

1. A sleeve-type magnetic clutch, comprising a conductor rotor (1), a permanent magnet rotor (2), an electromagnetic assembly (3), and an output shaft (4), characterized in that: The conductor rotor (1) comprises a conductor cylinder (11) and a conductor ring (12) arranged on the inner circumferential surface of the conductor cylinder (11); the permanent magnet rotor (2) comprises a magnetic seat (21), a radial permanent magnet (22) and an axial permanent magnet (23); the electromagnetic assembly (3) comprises an electromagnetic coil (31); the electromagnetic assembly (3) and the conductor rotor (1) are respectively arranged on both sides of the permanent magnet rotor (2); the conductor rotor (1) and the permanent magnet rotor (2) are concentrically sleeved and separated by an air gap; the conductor ring (12) is opposite to the radial permanent magnet (22), and the electromagnetic coil (31) is opposite to the axial permanent magnet (23); the permanent magnet rotor (2) is slidably connected to the output shaft (4), which can drive the output shaft (4) to rotate synchronously and move along the axial direction of the output shaft (4); when working, the electromagnetic component (3) is energized, and when the direction of the magnetic field generated by the electromagnetic coil (31) is opposite to that of the axial permanent magnet (23), the permanent magnet rotor (2) is pushed toward the conductor rotor (1), so that the conductor ring (12) and the radial permanent magnet (23) are in contact with each other. The conductor rotor (1) is directly opposite to the permanent magnet (22), and the conductor rotor (1) transmits power to the permanent magnet rotor (2) through the magnetic field; when the direction of the magnetic field generated by the electromagnetic coil (31) is the same as that of the axial permanent magnet (23), the permanent magnet rotor (2) is attracted to the electromagnetic coil (31) along the output shaft (4), so that the conductor ring (12) and the radial permanent magnet (22) are offset, and the power transmission between the conductor rotor (1) and the permanent magnet rotor (2) is disconnected; a limit plate (41) and a limit step (42) are provided on the output shaft (4), and the limit plate (41) and the limit step (42) are provided on the output shaft (4). The positioning plate (41) limits the axial position of the permanent magnet rotor (2) on the output shaft (4) when it is close to the conductor rotor (1), and the limiting step (42) limits the axial position of the permanent magnet rotor (2) on the output shaft (4) when it is close to the electromagnetic coil (31); the electromagnetic assembly (3) is fixed, the electromagnetic coil (31) is electrically connected to the DC power supply through the wire (32), and the magnetic field direction of the electromagnetic coil (31) is changed by controlling the current direction of the power supply, and the electromagnetic field direction of the electromagnetic coil (31) is along the axial direction.

2. The sleeve type magnetic clutch according to claim 1, characterized in that: The electromagnetic assembly (3) further comprises a commutator (33) and a brush (34); the electromagnetic coil (31) is fixedly connected to the output shaft (4) and rotates with the output shaft (4); the commutator (33) is fixedly connected to the output shaft (4); the electromagnetic coil (31) is electrically connected to the commutator (33); the commutator (33) is arranged in the brush (34) and is in frictional contact with the brush (34); the brush (34) is fixed and electrically connected to a DC power supply.

3. The sleeve type magnetic clutch according to claim 1, characterized in that: The radial permanent magnets (22) are composed of an even number of magnets, the direction of the magnetic field formed is radial, and they are evenly arranged in the circumferential direction on the outer circumferential surface of the magnetic base (21).

4. The sleeve type magnetic clutch according to claim 1, characterized in that: The axial permanent magnet (23) is composed of at least one permanent magnet, the magnetic field direction is along the axial direction, the magnetic field direction is consistent, and it is evenly arranged along the circumferential direction on the end surface of the magnetic seat (21).

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