CN210380618U

CN210380618U - Ring rail type linear motor

Info

Publication number: CN210380618U
Application number: CN201920622420.1U
Authority: CN
Inventors: 郑雨
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-04-21
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to a circle rail formula linear electric motor, including slider, coil, magnetic field device, two fixed end blocks and two wires, magnetic field device includes two magnetic field subassemblies, the magnetic field subassembly includes two permanent magnets, fixed end block includes fixed plate and two curb plates, and this circle rail formula linear electric motor supplies power to the coil through the wire that flexible stripline made, has eliminated contact resistance and frictional resistance to the power supply track has been eliminated, make the circular telegram coil receive the ampere force in the invariable magnetic field that the permanent magnet produced, and drive the slider and remove between two fixed end blocks, the joule heat that produces when having avoided the slider to remove, thereby the life of equipment has been prolonged, and then this circle rail formula linear electric motor's practicality has been improved.

Description

Ring rail type linear motor

Technical Field

The invention relates to the field of motors, in particular to a circular rail type linear motor.

Background

The linear motor is one of motors classified according to power output modes, and is similar to a traditional rotary motor, the linear motor can be divided into a brush type linear motor and a brushless type linear motor, wherein in the operation process of the brush type linear motor, a rotor can generate ampere force in a magnetic field only by carrying out surface contact power transmission with a stator, and the rotor moves under stress, the contact power transmission has certain contact resistance, and when the stator moves, the contact resistance is increased and generates a large amount of joule heat, and the heat can be accumulated at the contact power transmission part of a rotor armature and a stator track in a large amount to generate huge damage to the stator track, so the service life of the magnetic track type linear motor is very low, and the magnetic track type linear motor can waste a large amount of electric energy due to the electric conversion efficiency magnetism of a single-pass electric lead.

In order to solve the problem of service life of the magnetic track type linear motor, the invention provides an induction type linear motor, wherein a stator and a rotor in the linear motor are not in contact, pulse current is input to a stator coil, an induction circuit is generated in the rotor coil due to a variable magnetic field generated by the stator coil, simultaneously the direction of induced current in the rotor coil is the same as the current direction of the stator coil, and prismatic force for pushing the rotor coil is generated, the whole process only needs to supply power to the stator coil, the rotor coil only needs to be placed at a certain position to generate thrust to the rotor coil, although the service life of the linear motor is prolonged, the maintenance time of the thrust is very short due to the structural characteristics of the linear motor, the parameters and the shapes of the stator coil and the rotor coil are strictly required, and in order to maintain the unidirectional prismatic force, pulse direct current with a specific waveform is required to be adopted for supplying power, if the motor is accelerated only once, the power of pulse electricity is not limited, but in order to enable the rotor coil to obtain higher speed, the multi-stage stator coil is often adopted to accelerate the rotor coil for many times, the power of the pulse electricity needs to be limited at the moment, otherwise, the rotor spool can be burnt out and short-circuited due to joule heat of induced current, and the practicability of the conventional linear motor is further reduced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, a coil rail type linear motor is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a coil rail type linear motor comprises a sliding block, a coil, a magnetic field device, two fixed end blocks and two conducting wires, wherein the two fixed end blocks are arranged in parallel, the sliding block and the magnetic field device are located between the two fixed end blocks, the sliding block is parallel to the fixed end blocks, the cross section of the sliding block in the direction perpendicular to the fixed end blocks is in a shape of a Chinese character 'hui', the cross section of the coil parallel to the fixed end blocks is in a shape of a Chinese character 'hui', the upper side and the lower side of the coil respectively penetrate through the upper side and the lower side of the sliding block, and the two ends of the coil are.

Preferably, in order to provide a fixed magnetic field, the magnetic field device comprises two magnetic field assemblies, the two magnetic field assemblies are respectively positioned on two sides of the slider in the horizontal direction with respect to the fixed end blocks, the magnetic field assemblies comprise two permanent magnets, the permanent magnets are cuboid in shape and are fixed between the two fixed end blocks, one of the two permanent magnets of the magnetic field assemblies is positioned on the outer side of the coil, the other permanent magnet is positioned on the inner side of the coil, and the magnetic field directions of the two magnetic field assemblies are opposite.

Preferably, in order to realize stable movement of the slider, the magnetic field assembly further includes a guide optical axis, the guide optical axis is cylindrical, two ends of the guide optical axis are respectively and fixedly connected with the two fixed end blocks, two notches are arranged in the horizontal direction of the slider perpendicular to the fixed end blocks, the notches are semi-cylindrical in shape, the notches are matched with the guide optical axis, and the slider is in sliding connection with the guide optical axis.

Preferably, in order to facilitate installation of the device, the fixed end block comprises a fixed plate and two side plates, two round holes are formed in the fixed plate and correspond to the guide optical axes one by one, two ends of each guide optical axis are respectively arranged in the two round holes in the fixed plate, the fixed plate is fixed between the two side plates, the fixed plate and the two side plates are located on the same plane, the side plates correspond to the magnetic field assemblies one by one, two strip-shaped openings are formed in the side plates and correspond to the permanent magnets one by one, and two ends of each permanent magnet are respectively fixed in the strip-shaped openings of the two side plates.

Preferably, in order to reduce the friction force applied when the sliding block moves, the guide optical axis is coated with lubricating oil.

Preferably, in order to ensure stable movement of the slider, the conductive wire is a flexible ribbon wire.

The invention has the advantages that the coil is powered by the lead made of the flexible ribbon wire, so that the contact resistance and the friction resistance are eliminated, the power supply track is eliminated, the electrified coil is subjected to the ampere force of the constant magnetic field generated by the permanent magnet, the slide block is driven to move between the two fixed end blocks, the joule heat generated when the slide block moves is avoided, the service life of the equipment is prolonged, and the practicability of the coil-rail type linear motor is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a plan view of a circular rail type linear motor of the present invention;

FIG. 2 is a schematic view of a connection structure of a coil and a slider of the track type linear motor of the present invention;

FIG. 3 is a side view of a slider of the orbital linear motor of the invention;

fig. 4 is a schematic structural view of a fixed end block of the orbital linear motor of the invention;

in the figure: 1. the magnetic driving device comprises a sliding block, 2 coils, 3 conducting wires, 4 permanent magnets, 5 guiding optical axes, 6 fixing plates and 7 side plates.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1 to 3, the coil-and-rail linear motor includes a slider 1, a coil 2, a magnetic field device, two fixed end blocks and two wires 3, wherein the two fixed end blocks are arranged in parallel, the slider 1 and the magnetic field device are located between the two fixed end blocks, the slider 1 is parallel to the fixed end blocks, a cross section of the slider 1 perpendicular to the fixed end blocks is in a shape of a square-letter, a cross section of the coil 2 parallel to the fixed end blocks is in a shape of a square-letter, upper and lower sides of the coil 2 respectively penetrate through upper and lower sides of the slider 1, and two ends of the coil 2 are respectively connected to the two wires 3.

In the coil rail type linear motor, the positions of the fixed end blocks are fixed, a constant magnetic field is provided between the two fixed end blocks by using the magnetic field device, the device can lead current to the coil 2 through the two leads 3 in the use process, and when the current flows through the coil 2, the coil 2 in the slider 1 is influenced by the action of ampere force because the slider 1 is positioned in the constant magnetic field generated by the magnetic field device, so that the coil 2 is pushed to move, the slider 1 is driven to move, and the moving function of the slider 1 is realized. This circle rail formula linear electric motor passes through wire 3 and circular telegram to coil 2, contact resistance and frictional resistance when having eliminated the operation of magnetism rail formula linear electric motor, simultaneously owing to eliminated the power supply track, utilize magnetic field device to provide invariable magnetic field to coil 2 to letting in slider 1 produces ampere of power, promote slider 1 and coil 2 and remove between two fixed end blocks, avoided slider 1 to remove the in-process and produced a large amount of heats, reduced the removal friction, thereby prolonged the life of equipment.

As shown in fig. 2, the magnetic field device includes two magnetic field assemblies, the two magnetic field assemblies are respectively located on two sides of the slider 1 in the horizontal direction with respect to the fixed end block, the magnetic field assembly includes two permanent magnets 4, the permanent magnets 4 are rectangular, the permanent magnets 4 are fixed between the two fixed end blocks, one of the two permanent magnets 4 of the magnetic field assembly is located outside the coil 2, the other permanent magnet 4 is located inside the coil 2, and the magnetic field directions of the two magnetic field assemblies are opposite.

The magnetic field device is composed of two magnetic field components, the two magnetic field components are respectively acted on two sides of the coil 2 in the horizontal direction, in the magnetic field components, the two permanent magnets 4 are respectively positioned on the inner side and the outer side of the coil 2 and are fixed between the two fixed end blocks, after current enters the coil 2 from one lead 3, the coil 2 which is round the shape of a circle flows out from the other lead 3, the two sides of the coil 2 in the horizontal direction are opposite in flowing direction of the current, in the magnetic field components on the two sides of the coil 2, the directions of the magnetic fields formed by the two permanent magnets 4 in the two magnetic field components are opposite by controlling the installation mode of the permanent magnets 4, the two sides of the coil 2 passing through the current are both subjected to Ampere force from the same direction, the Ampere force acts on the coil 2.

Preferably, in order to realize stable movement of the slider 1, the magnetic field assembly further includes a guide optical axis 5, the guide optical axis 5 is cylindrical, two ends of the guide optical axis 5 are respectively and fixedly connected with the two fixed end blocks, two notches are arranged in the slider 1 in the horizontal direction perpendicular to the fixed end blocks, the notches are semi-cylindrical, the notches are matched with the guide optical axis 5, and the slider 1 is slidably connected with the guide optical axis 5.

Two guide optical axes 5 are fixed between two fixed end blocks, and the cylindrical guide optical axes 5 penetrate through the semi-cylindrical gaps on the two sides of the sliding block 1, so that the moving direction of the sliding block 1 is fixed, and after the coil 2 is electrified, the sliding block 1 moves stably along the axis direction of the guide optical axes 5.

As shown in fig. 4, the fixed end block includes a fixed plate 6 and two side plates 7, two circular holes are formed in the fixed plate 6, the circular holes correspond to the guide optical axes 5 one by one, two ends of the guide optical axes 5 are respectively located in the two circular holes in the fixed plate 6, the fixed plate 6 is fixed between the two side plates 7, the fixed plate 6 and the two side plates 7 are located on the same plane, the side plates 7 correspond to the magnetic field assemblies one by one, two strip-shaped openings are formed in the side plates 7, the strip-shaped openings correspond to the permanent magnets 4 one by one, and two ends of the permanent magnets 4 are respectively fixed in the strip-shaped. Round hole on the fixed plate 6 can conveniently lead inserting of optical axis 5 to lead optical axis 5 fixed, and on the curb plate 7 of the both sides of fixed block, can conveniently insert permanent magnet 4 through the bar mouth, then the position of fixed permanent magnet 4, thereby conveniently fix between two fixed blocks and between two curb plates 7 respectively with leading optical axis 5 and permanent magnet 4.

Preferably, the guide optical axis 5 is coated with a lubricant in order to reduce the friction force applied to the slider 1 during movement. Lubricating oil is coated on the surface of the guide optical axis 5, so that friction between the semicircular notch of the sliding block 1 and the guide optical axis 5 is reduced, and the sliding block 1 is convenient to move.

Preferably, the lead wire 3 is a flexible ribbon wire in order to ensure the movement of the slider 1. The lead 3 is made of flexible materials, so that the resistance generated after the form of the lead 3 changes when the coil 2 and the slider 1 move can be reduced, meanwhile, the lead 3 is a ribbon-shaped wire, the contact between the coil 2 and the lead 3 is ensured, the power supply for the coil 2 is convenient, and the coil 2 is influenced by the action of magnetic field ampere force after being electrified and moves.

When the ring-track type motor is used, current can be introduced into the coil 2 through the two leads 3, so that the coil 2 is in contact with a power supply circuit, when constant and stable direct current is introduced, the coil 2 can greatly drive the sliding block 1 and the leads 3 to move, the whole moving process can be continuously accelerated in the early stage, if the stroke is enough, the electromotive force generated by reverse motion can not be accelerated any more and can keep moving at a constant speed after a certain speed is reached, and the acceleration and the direction of the movement enable the magnitude and the direction of the constant and stable direct current to be constant; when the pulse direct current is adopted for power supply, the acceleration of the coil 2 is determined according to the pulse size in the coil 2 and the speed of the coil 2 at the moment, and the movement direction is determined by the direction of the pulse direct current; when the alternating current with certain power is adopted for power supply, the coil 2 can do reciprocating motion according to the instantaneous current and the alternating current frequency of the alternating current. In the use process of the device, the contact resistance and the friction resistance are eliminated, the damage of the device caused by the generation of a large amount of joule heat is avoided, the coil 2 is powered through the lead 3, and the service life of the device is prolonged.

Compared with the prior art, this circle rail formula linear electric motor supplies power through wire 3 that flexible stripline made to coil 2, has eliminated contact resistance and frictional resistance, and has eliminated the power supply track, make circular telegram coil 2 receive the ampere force of the constant magnetic field that permanent magnet 4 produced, and drive slider 1 and remove between two fixed end block, joule heat that produces when having avoided slider 1 to remove, thereby the life of equipment has been prolonged, and then this circle rail formula linear electric motor's practicality has been improved.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The coil rail type linear motor is characterized by comprising a sliding block (1), a coil (2), a magnetic field device, two fixed end blocks and two conducting wires (3), wherein the two fixed end blocks are arranged in parallel, the sliding block (1) and the magnetic field device are positioned between the two fixed end blocks, the sliding block (1) is parallel to the fixed end blocks, the cross section of the sliding block (1) in the direction perpendicular to the fixed end blocks is in a shape of a Chinese character hui, the cross section of the coil (2) in parallel to the fixed end blocks is in a shape of a Chinese character hui, the upper side and the lower side of the coil (2) penetrate through the upper side and the lower side of the sliding block (1) respectively, and the two ends of the coil (2) are connected with the two conducting.

2. The track-type linear motor according to claim 1, wherein the magnetic field device comprises two magnetic field assemblies, the two magnetic field assemblies are respectively positioned at two sides of the slider (1) in the horizontal direction with respect to the fixed end blocks, the magnetic field assemblies comprise two permanent magnets (4), the permanent magnets (4) are rectangular parallelepiped in shape, the permanent magnets (4) are fixed between the two fixed end blocks, one permanent magnet (4) of the two permanent magnets (4) of the magnetic field assemblies is positioned at the outer side of the coil (2), the other permanent magnet (4) is positioned at the inner side of the coil (2), and the magnetic field directions of the two magnetic field assemblies are opposite.

3. The coil-track type linear motor according to claim 2, wherein the magnetic field assembly further comprises a guide optical axis (5), the guide optical axis (5) is cylindrical, two ends of the guide optical axis (5) are fixedly connected with two fixed end blocks respectively, two notches are arranged on the slider (1) in a horizontal direction perpendicular to the fixed end blocks, the notches are semi-cylindrical in shape and are matched with the guide optical axis (5), and the slider (1) is slidably connected with the guide optical axis (5).

4. The circular rail type linear motor according to claim 3, wherein the fixed end block comprises a fixed plate (6) and two side plates (7), two round holes are formed in the fixed plate (6), the round holes correspond to the guide optical axes (5) in a one-to-one manner, two ends of each guide optical axis (5) are respectively arranged in the two round holes in the fixed plate (6), the fixed plate (6) is fixed between the two side plates (7), the fixed plate (6) and the two side plates (7) are located on the same plane, the side plates (7) correspond to the magnetic field assemblies in a one-to-one manner, two strip-shaped openings are formed in the side plates (7), the strip-shaped openings correspond to the permanent magnets (4) in a one-to-one manner, and two ends of each permanent magnet (4) are respectively fixed in the strip.

5. A circular rail linear motor according to claim 3, characterized in that said guide optical axis (5) is coated with a lubricant.

6. The track-type linear motor according to claim 1, wherein the conductor (3) is a flexible ribbon wire.