JPH07329783A - Linear synchronous motor driving type electric point - Google Patents

Abstract

PURPOSE:To surely attach a permanent magnet which is attached to both the faces of a yoke as the field pole of the movable part of a linear synchronous motor with polarities reversed alternately to the yoke for improving reliability. CONSTITUTION:Since a permanent magnet 62 and a space piece 64 are mechanically united by arranging the permanent magnets 62 attached side by side to the face on one side of a yoke with the nonmagnetic space piece 64 set between the magnets 62, it can be prevented that the permanent magnet 62 is slipped in the direction of the movement of a movable part 6A by the reactive force of a switch rail acting on the movable part 6A for separating from the yoke 61.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turning machine used in a general railroad branching device, and in particular, it is possible to control its drive from a control room at a remote position by electrically driving it. The present invention relates to an electric switching machine, and further to a linear synchronous motor drive type electric switching machine driven by a linear synchronous motor.

[0002]

2. Description of the Related Art FIG. 7 is a plan view of a branching device using a conventional linear synchronous motor drive type electric switching machine (Japanese Patent Laid-Open No. FA91-0843), which comprises basic rails 11 and 12. A tongue rail 1 composed of movable tongue rails 21 and 22 is arranged on the basic rail 1, and the tongue rail 1 is moved up and down in the figure by a connecting rod 4 driven by a linear synchronous motor 30 via a shaft 63. It can be moved in any direction. In this figure, the upper tongue rail 21 is in contact with the basic rail 11 and the lower tongue rail 22 is away from the basic rail 12. Therefore, a vehicle that has entered the upper side of the basic rail 1 from the left side of the figure is on the upper side of the figure. Since the wheels move from the basic rail 11 to the tongue rail 21 and the wheels under the figure pass over the basic rail 12 as they are, the vehicle consequently branches to the lower side of the figure. On the other hand, when the electric rolling machine 3 moves the tongue rail 2 downward so that the tongue rail 22 comes into contact with the basic rail 12 and the tongue rail 21 is separated from the basic rail 11, it enters from the left side of the figure. The vehicle that arrives rides on the basic rail 11 and the tongue rail 21 and branches toward the top of the figure.

FIG. 8 is a sectional view taken along line AA of FIG. 7, and FIG. 9 is B- of FIG.
It is a B sectional view, and each shows the sectional structure of the linear synchronous motor 30. FIG. 8 is also a sectional view taken along the line CC of FIG. In these drawings, the linear synchronous motor 30 is composed of a fixed part 5 and a movable part 6, and the fixed part 5 is mounted on the upper and lower inner wall surfaces of the case 51 side by side in the left-right direction of the drawing. It also comprises a plurality of salient pole-shaped iron cores 52 and windings 53 provided on each of the iron cores 52. The movable portion 6 includes a yoke 61, a plurality of permanent magnets 62 attached to both sides of the yoke 61, and a shaft 63 for transmitting the movement of the movable portion 6 in the left-right direction in FIG. 9 to the outside.

Three pieces of the iron core 52 and the winding wire 53 form one set, and
Form two poles. The permanent magnets 62 of the movable part 6 are also field poles, and two magnetic poles are paired to form one pole and generate magnetic fluxes in opposite directions. Therefore, the three horizontal dimensions of the iron core 52 and the two dimensions of the permanent magnet 62 in FIG. As is well known, since the linear synchronous motor has the same principle as the synchronous motor, when a three-phase alternating current is applied to the winding 53, a moving magnetic field that moves in the left and right directions in FIG. A magnetic force acts on the magnet 62, and if synchronized, the movable portion 6 moves at the same speed as the moving magnetic field. If the speed of the moving magnetic field is changed, the movable part 6
The speed also changes and if the moving magnetic field is stopped, the movable part 6 also stops. The force applied to the shaft 63 is a linear synchronous motor
Such synchronization is maintained as long as 30 is not exceeded.

The force that the linear synchronous motor 30 can withstand may be proportional to the exciting current and to the sum of the areas of the surfaces of the permanent magnets 62 facing the iron core 52. Therefore, the area obtained as the product of the sum of the horizontal lengths of the upper and lower eight permanent magnets 62 in FIG. 9 and the horizontal length of the permanent magnets 62 in FIG. 8 is set to a value sufficient to generate the required force. Just set it. In the case of position control as will be described later, the above-mentioned inter-pole distance has a high control accuracy if the value is large, and if the value is small, the number of iron cores 52, windings 53 and permanent magnets 62 increases, resulting in high cost. Therefore, it is necessary to set an appropriate value.

The position detector 7 is shown in the lower right of FIG. U-shaped optical sensor mounted on the case 51 via the mounting base 73
71 is a yoke of the movable part 6 that moves in the direction perpendicular to the paper surface.
The light shielding plates 72 of the position sensor 7 are attached to 61 via mounting fixtures 74, respectively. The optical sensor 71 is a commercially available product that emits light from one side of the U-shape, receives the light on the other side, converts it into an electric signal according to the intensity of the optical signal, and outputs the electric signal. If there is something that blocks light, the light is not received, so this is detected.The light blocking plate 72 has a comb-teeth shape and is provided with a constant interval between a light transmitting portion and a light blocking portion. When the light blocking plate 72 moves, the light sensor 71 receives the intermittent light. Therefore, the output signal is input to a control device (not shown) and the number of pulses generated by the intermittent light is counted to move the movable part. The distance traveled by 6 can be determined, and the change over time determines the speed.

FIG. 10 is a partially enlarged cross-sectional view showing a part of FIG. 9 enlarged. As shown by N and S, the polarities of the permanent magnets 62 attached to the yoke 61 are above the yoke 61 or The permanent magnets 62 arranged side by side in the left-right direction on the lower side are arranged so that the adjacent permanent magnets 62 have polarities opposite to each other. For example, the permanent magnet 621 has a pole from the south pole to the north pole. The direction of the adjacent permanent magnet 622 is downward, whereas the direction of the pole of the adjacent permanent magnet 622 is downward, and the permanent magnet 623 opposed via the yoke 61 of the permanent magnet 621 is in the upward polar direction like the permanent magnet 621. It is arranged.

With such arrangement of the permanent magnets 62, the magnetic flux generated from the permanent magnets 621 penetrates the iron core 52 from the N pole upwards, passes through the case 51, passes through the adjacent iron core 52, and passes through the permanent magnets 62.
to go into. The magnetic flux generated from the permanent magnet 621 is also shunted to the permanent magnet 62 on the left side (not shown). The magnetic flux generated downward from the south pole of the permanent magnet 61 passes through the yoke 62 in the vertical direction in the figure and enters the permanent magnet 623. As is clear from the figure, the movable part 6 and the fixed part 5 are vertically symmetrical with respect to the yoke, and
2. The number of windings 53 is three, and the number of permanent magnets 62 is two. Therefore, the above-described magnetic flux flow is common to the entire magnetic flux flow.

Since the magnetic flux passing through the yoke 61 is in the vertical direction in the figure, the vertical dimension of the yoke 62, that is, the thickness dimension has almost no effect on the flow of the magnetic flux.
Will be decided to secure the mechanical strength of
It can be made much thinner than when the magnetic flux flows in the left-right direction.

[0010]

The material of the permanent magnet is
There are various different materials such as ferrite, alnico, and rare earth materials, but rare earth materials are suitable for permanent magnets used as field poles of linear synchronous motors for various reasons. Samarium-cobalt-based and neodymium-based are commonly used in various fields depending on the kind of the rare-earth element contained in the rare-earth-based material.

As described above, the permanent magnets 62 are attached to both sides of the yoke 61, but the rare earth-based permanent magnets as described above have a predetermined shape by so-called sintering in which the powder material is solidified in the mold. , The one with the size is manufactured. Since the manufactured permanent magnets have the drawbacks of low mechanical strength, brittleness, and easy chipping, they are difficult to machine.
The attachment of 62 to the yoke 61 is usually by an adhesive.

The force applied to the permanent magnet 621 includes a repulsive force with the fixed portion 5, a repulsive force with the yoke 61 and a repulsive force with the adjacent permanent magnet 622. In addition, since the reaction force of the tongue rail 2 applied via the shaft 63 of FIG. 9 becomes a force between the fixed portion 5 and the permanent magnet 62, the permanent magnet 62 exerts a large force in the horizontal direction of FIG. Become. As described above, since the permanent magnet 62 is attached to the yoke 61 by the adhesive, there is a problem in that it is difficult to say that the permanent magnet 62 has sufficient reliability.

An object of the present invention is to solve the above problems and to provide a highly reliable linear synchronous motor drive type electric switching machine in which the permanent magnet is securely attached to the yoke.

[0014]

In order to solve the above problems, according to the present invention, a linear synchronous motor is used to drive a movable tongue rail with respect to a fixed basic rail of a train track branching device. In a synchronous motor drive type electric turning machine, a linear synchronous motor includes a case, a plurality of iron cores attached to the upper and lower inner surfaces of the case, and a fixed portion including windings provided on each of the iron cores and the fixed portion. It consists of a yoke sandwiched between the fixed parts and a movable part consisting of permanent magnets as field poles provided on both sides of the yoke facing the fixed part. It is assumed that the permanent magnets mounted upside down are arranged with a spacing piece made of a non-magnetic material interposed therebetween. Further, the surfaces of the spacing piece and the permanent magnet are flush with each other, or the spacing piece projects from the permanent magnet.

Further, in a linear synchronous motor drive type electric turning machine in which a tongue rail which is movable with respect to a fixed basic rail of a branch device of a train track is driven by a linear synchronous motor, the linear synchronous motor is a case. , A fixed part composed of a plurality of iron cores attached to the upper and lower inner surfaces of the case, and windings provided on each of the iron cores, a yoke sandwiched between the fixed parts, and fixed parts on both sides of the yoke. The permanent magnet, which is composed of a movable part made up of permanent magnets as field poles facing each other, is installed on one surface of the yoke and is installed by inverting the polarity alternately. It shall be inserted. Further, the linear synchronous motor drive type electric switching machine is provided with the above-mentioned spacing piece.

Further, in a linear synchronous motor drive type electric turning machine in which a movable tongue rail of a branching device of a train track is driven by a linear synchronous motor, the linear synchronous motor is a case. , A fixed part composed of a plurality of iron cores attached to the upper and lower inner surfaces of the case, and windings provided on each of the iron cores, a yoke sandwiched between the fixed parts, and fixed parts on both sides of the yoke. And a non-magnetic material portion is provided in the yoke portion corresponding to the gap between the permanent magnets attached to the yoke. . Also,
This linear synchronous motor drive type electric turning machine is provided with the above-mentioned spacing piece, and is further provided with a groove into which the above-mentioned permanent magnet is inserted.

Further, in a linear synchronous motor drive type electric switching machine in which a tongue rail movable in a fixed basic rail of a branch device of a train track is driven by a linear synchronous motor, the linear synchronous motor is a case. , A fixed part composed of a plurality of iron cores attached to the upper and lower inner surfaces of the case, and windings provided on each of the iron cores, a yoke sandwiched between the fixed parts, and fixed parts on both sides of the yoke. It is assumed that the movable portion is formed of a permanent magnet as a field magnetic pole provided facing the movable portion, and the movable portion is covered with a protective film. In addition, this protective film is formed by applying a resin or by forming a film. Further, in this linear synchronous motor drive type electric switching machine, the above-mentioned spacing piece is provided. Furthermore, a groove in which a permanent magnet is inserted is provided. Further, it is assumed that a magnetic material portion is provided.

Further, in a linear synchronous motor drive type electric turning machine in which a tongue rail of a train track branching device movable with respect to a fixed basic rail is driven by a linear synchronous motor, the linear synchronous motor is a case. , A fixed part composed of a plurality of iron cores attached to the upper and lower inner surfaces of the case, and windings provided on each of the iron cores, a yoke sandwiched between the fixed parts, and fixed parts on both sides of the yoke. It consists of a movable part consisting of a permanent magnet as a field pole that is provided opposite to the permanent magnet. This permanent magnet is made of a machinable material, and the permanent magnet and yoke are provided with screw holes and tightened with non-magnetic screws. The permanent magnet shall be fixed to the yoke. Also,
In this linear synchronous motor drive type electric switching machine, the above-mentioned magnetic body portion is provided.

[0019]

In the structure of the present invention, the movable portion of the linear synchronous motor as an electric machine switching machine for driving the tongue rail is attached to both sides of the yoke of one of the surfaces, with the polarity being alternately inverted. The permanent magnets and the spacers are mechanically integrated by arranging the permanent magnets with the spacers made of non-magnetic material sandwiched between them, and the reaction force of the tongue rail applied to the movable parts causes the permanent magnets to move. Prevent it from slipping out of the yoke by shifting in the direction. It is possible to prevent the corners of the permanent magnet from being chipped by making the surfaces of the spacing piece and the permanent magnet flush with each other or by making the spacing piece project with respect to the permanent magnet.

Further, by providing a groove in the yoke and inserting a permanent magnet into the groove, the permanent magnet is prevented from coming off due to the above-mentioned force. By using both the provision of the groove and the provision of the spacing piece, the permanent magnet can be more reliably prevented from coming off. Further, by providing a non-magnetic material part in the yoke portion corresponding to the gap between the adjacent permanent magnets to block the flow of the magnetic flux in the moving direction in the yoke, each permanent magnet is affected by the bias of the magnetic flux. Suppress the bias of force.

Further, the permanent magnet, which is easily broken, is protected by covering the movable portion composed of the yoke and the permanent magnet with the protective film. This protective film can be formed by applying a resin or by adhering a film. By properly combining the spacing piece inserted between the permanent magnets, the groove into which the permanent magnet is inserted, the magnetic body portion provided on the yoke and the protective film, the respective actions can be overlapped.

Further, if a material that can be machined is used for this permanent magnet, it becomes possible to machine the threaded hole so that the yoke can also be machined. It is possible to adopt a configuration in which it is fixed to the yoke with screws. Therefore, the permanent magnet is firmly fixed to the yoke. Further, the same effect as described above can be obtained by providing the yoke with the above-mentioned non-magnetic material portion.

[0023]

EXAMPLES The present invention will be described below based on examples.
FIG. 1 is a partially enlarged sectional view of a linear synchronous motor showing a first embodiment of the present invention. The same components as those in FIG. 10 are designated by common reference numerals and detailed description thereof will be omitted. In this figure, spacing pieces 64 are respectively sandwiched between adjacent permanent magnets 62. With such a configuration, all the permanent magnets 62 attached to the same surface of the yoke 61 are mechanically integrated via the spacing piece 64, so that the reaction force of the tongue rail 2 causes the permanent magnets 62 to move to the left and right in the figure. Even if a directional force is applied, the structure will be sufficient to withstand.

The spacer 64 must be made of a non-magnetic material, but need not be made of a non-metal, and therefore the insulating material may be made of non-magnetic stainless steel. However, a metal having a good electric conductivity such as copper or aluminum is not preferable because an eddy current may flow due to a local temporal change in magnetic flux and local heating may occur. In FIG. 1, the thickness of the spacing piece 64 is illustrated as being smaller than that of the permanent magnet 62, but the thickness is not limited to this. Rather, by making both thicknesses the same or making the thickness of the spacing piece 64 larger, it is possible to prevent the corners of the permanent magnet 62 from being chipped. As is well known, many of the materials used for the permanent magnet 62 are sintered materials and have the drawback of being mechanically brittle and easily chipped. Therefore, it is necessary to protect the corners of the permanent magnet 62 with such spacing pieces 64. You can

FIG. 2 is a partially enlarged sectional view of a linear synchronous motor showing a second embodiment of the present invention, and the explanation of the same components as in FIG. 1 will be omitted. In this figure, Yoke 61
A groove 65 is provided in B so that the permanent magnet 62 can be inserted, and the part where the permanent magnet 62 is fitted in the groove 65 receives the lateral force to move the permanent magnet 62 in the lateral direction. The reliability is enhanced by limiting it so that it does not come off. Of course, even in the case of this configuration, the reliability can be further improved by using a configuration in which a spacing piece is inserted in the gap between the adjacent permanent magnets 62 as in FIG.

FIG. 3 is a partially enlarged sectional view of a linear synchronous motor showing a third embodiment of the present invention, and the explanation of the same components as in FIG. 2 will be omitted. In this figure, Yoke 61
In C, a non-magnetic material portion 66 is provided in a part of a portion corresponding to a gap between adjacent permanent magnets 62. Since the flow of magnetic flux in the left-right direction inside the yoke 61C is cut off by providing this non-magnetic material portion 66, the flow of magnetic flux inside the yoke 61C is independent for each of the two permanent magnets 62 that are paired up and down. Therefore, even if the air gap length between the permanent magnets 62 and the iron core 52 is biased for some reason, the magnetic flux is not unevenly distributed. The value of the generated force of the permanent magnet 62 becomes relatively small.

Also in the case of this embodiment, as shown in the drawing, the spacing piece 64
May be provided, and the spacing piece 64 and the non-magnetic body portion 66 may be integrally formed. That is, it is appropriate that the non-magnetic body portion 66 is made of non-magnetic stainless steel from the viewpoint of the processing method and the mechanical strength, but as described above, the spacing piece 64 may be made of the same material, so these are integrally configured. It is possible. FIG. 4 is a partially enlarged sectional view of a linear synchronous motor showing a fourth embodiment of the present invention, and the explanation of the same constituent elements as those in the above figures will be omitted. In this figure, the permanent magnet 62 and the spacing piece 64 whose surface is flush with each other are covered with a protective film 67. As described above, the material of the permanent magnet 62 is easily chipped, so the spacing piece 64
The corners are protected with and are further covered with a protective film for protection. Such protection has a great effect on the protection of the permanent magnet 62 in the process of manufacturing the linear synchronous motor 30 without running. There is also an effect that it becomes easy to remove iron powder that adheres to the surface of the permanent magnet 62.

The protective film 67 may be formed by applying a resin or by laminating a film. When the film is laminated, the surface of the permanent magnet 62 and the spacing piece 64 is as shown in the figure. It is suitable to form smoothly. Also,
In the case of coating, since the permanent magnet 62 and the spacing piece 64 do not have to be flush with each other, the spacing piece 64 is recessed from the permanent magnet 62 as shown in FIGS. 1 and 3, or the spacing piece 64 as shown in FIG. It can also be applied when there is no. Even when the film is attached and the protective film 67 is formed, if the film made of a highly elastic material is used as the film, even if the spacing piece 64 is not flush with the permanent magnet 62, the spacing piece 64 is further provided. Can be used when not available.

FIG. 5 is a partially enlarged sectional view of a linear synchronous motor showing a fifth embodiment of the present invention, and FIG. 6 is a plan view when the upper stator 5 is removed in the arrow D view of FIG. ,
The same constituent elements in these figures as those in the above-mentioned figures are designated by common reference numerals, and the description thereof will be omitted. In these figures, the permanent magnet 62E is made of a material that can be machined, such as by drilling a screw hole as described later, and is fixed to the yoke 61E with a screw 68. That is, the yoke 61E is provided with a screw hole as a female screw, and the permanent magnet 62E is provided with a screw hole through which the screw 68 penetrates.

As the permanent magnet 62E, a praseodymium rare earth permanent magnet is used. This praseodymium rare earth permanent magnet has been recently developed, and it is possible to obtain a permanent magnet of a predetermined size by hot rolling and cutting, and it has large mechanical strength and can be machined such as drilling. Is a big difference from the conventional rare earth permanent magnet. A permanent magnet made of such a machinable material is used as a permanent magnet 62E as a field pole of a linear synchronous motor.
The permanent magnet 62E may be provided with a screw hole and fixed to the yoke 61E by the non-magnetic screw 68 as described above.

Known praseodymium-based rare earth permanent magnets are, for example, those called Pr magnets manufactured by Seiko Epson Corporation. This Pr magnet contains iron (Fe), praseodymium (Pr), boron (B), and a small amount of copper (C).
It is composed of u) and has magnetic properties comparable to those of other rare earth permanent magnets. Yoke of permanent magnet 62E with screw 68
When the structure of fixing to 61E is adopted, the fixing is strong. Therefore, as in the first embodiment, a spacing piece 64 is provided between the permanent magnet 62E and the adjacent permanent magnet 62E, or the yoke 61E is fixed to the yoke 61E as in the second embodiment. It is not necessary to provide a groove 65 for inserting the permanent magnet 62E. Also, the materials that can be machined are naturally fragile,
Since it is not chipped, it is necessary to provide the protective film 67 as in the fourth embodiment. However, the provision of the non-magnetic material portion 66 on the yoke as in the third embodiment does not relate to the material of the permanent magnet or the fixing structure, so that the non-magnetic material portion 66 is attached to the yoke 61E of FIGS. By providing 66, the same effect can be obtained.

[0032]

As described above, according to the present invention, the permanent magnets, which are attached to both surfaces of the yoke of the movable portion of the linear synchronous motor and the polarity of which is alternately inverted, are made of a non-magnetic material. By arranging the gap pieces in between, the permanent magnets and the gap pieces are mechanically integrated, and the reaction force of the tongue rail applied to the movable part causes the permanent magnet to shift in the moving direction of the movable part and come off the yoke. Since this can be prevented, the effect of becoming a highly reliable linear synchronous motor drive type electric switching machine can be obtained. By making the surface of the spacing piece flush with or protruding from the surface of the permanent magnet, it is possible to prevent the corners of the permanent magnet from being chipped.

Further, by providing a groove in the yoke and inserting and mounting the permanent magnet in this groove, it is possible to prevent the permanent magnet from coming off the yoke due to the force in the moving direction described above, and to perform linear synchronization in the same manner as described above. The effect that the reliability of the motor is improved can be obtained. It is possible to prevent the permanent magnet from coming off more reliably by providing both the groove and the aforementioned spacing piece.

Further, a non-magnetic material portion is provided in the yoke portion corresponding to the gap between the adjacent permanent magnets to block the flow of the magnetic flux in the moving direction in the yoke, whereby the fixed portion and the movable portion are separated from each other. Even if the gap between the gaps is generated, the bias of the magnetic flux is suppressed. Therefore, the force applied to each permanent magnet is averaged, and the maximum value of the force applied to the permanent magnet becomes relatively small. Can reduce the possibility that the permanent magnet will come off the yoke.

Further, by covering the movable portion composed of the yoke and the permanent magnet with the protective film, it is possible to protect the permanent magnet which is easily broken. This protective film can be formed by applying a resin or by adhering a film. By properly combining the spacer pieces inserted between the permanent magnets, the grooves into which the permanent magnets are inserted, the magnetic body part provided on the yoke and the protective film, the respective actions act synergistically and a greater effect is obtained. Can be obtained.

Further, if a material that can be machined is used for this permanent magnet, it becomes possible to machine the threaded hole so that a threaded hole can be formed in the permanent magnet. It is possible to adopt a configuration in which a hole is provided and the permanent magnet is fixed to the yoke with a screw. Therefore, the permanent magnet is firmly fixed to the yoke, and the above-described spacing piece, groove, and protective film are not required, and the structure is simplified. Further, the same effect as described above can be obtained by providing the yoke with the above-mentioned non-magnetic material portion.

[Brief description of drawings]

FIG. 1 is a partially enlarged sectional view of a linear synchronous motor showing a first embodiment of the present invention.

FIG. 2 is a partially enlarged sectional view of a linear synchronous motor showing a second embodiment of the present invention.

FIG. 3 is a partially enlarged sectional view of a linear synchronous motor showing a third embodiment of the present invention.

FIG. 4 is a partially enlarged sectional view of a linear synchronous motor showing a fourth embodiment of the present invention.

FIG. 5 is a partially enlarged sectional view of a linear synchronous motor showing a fifth embodiment of the present invention.

FIG. 6 is a view on arrow D in FIG.

FIG. 7 is a plan view of a branching device using a conventional linear synchronous motor drive type electric switching machine.

FIG. 8 is a plan view of AA of FIG.

9 is a plan view of BB of FIG.

FIG. 10 is a partially enlarged sectional view of FIG.

[Explanation of symbols]

1 basic rail 2 tong rail 30 linear synchronous motor 5 fixed part 51 case 52 iron core 53 winding 6A, 6B, 6C, 6D, 6E movable part 61,61B, 61C, 61E yoke 62,62E permanent magnet 64 spacing piece 65 groove 66 Non-magnetic part 67 Protective film 68 Screw

Front page continuation (72) Kenji Endo Kenji Endo 1-1, Tanabe Nitta, Kawasaki-ku, Kanagawa Prefecture Fuji Electric Co., Ltd. (72) Hidetoshi Iwase 1-1, Tanabe Nitta, Kawasaki-ku, Kanagawa Prefecture Fuji Inside the Electric Co., Ltd. (72) Inventor Kazuhiro Kawamata 1-1 Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa Fuji Electric Co., Ltd.

Claims (16)

[Claims] 1. A linear synchronous motor drive type electric switching machine in which a movable tongue rail of a train track branching device which is movable with respect to a fixed basic rail is driven by a linear synchronous motor. , A fixed part composed of a plurality of iron cores attached to the upper and lower inner surfaces of the case, and windings provided on each of the iron cores, a yoke sandwiched between the fixed parts, and fixed parts on both sides of the yoke. Consisting of a movable part composed of a permanent magnet as a field pole provided opposite to
A linear synchronous motor drive type electric roller characterized in that permanent magnets provided on one surface of the yoke and alternately attached with their polarities reversed are arranged with a spacing piece made of a non-magnetic material interposed therebetween. Machine. 2. A linear synchronous motor driven electric switching machine according to claim 1, wherein the surfaces of the spacing piece and the permanent magnet are flush with each other. 3. The linear synchronous motor drive type electric rolling machine according to claim 1, wherein the spacing piece projects with respect to the permanent magnet. 4. A linear synchronous motor drive type electric switching machine in which a tongue rail which is movable with respect to a fixed basic rail of a branch device of a train track is driven by a linear synchronous motor. , A fixed part composed of a plurality of iron cores attached to the upper and lower inner surfaces of the case, and windings provided on each of the iron cores, a yoke sandwiched between the fixed parts, and fixed parts on both sides of the yoke. Consisting of a movable part composed of a permanent magnet as a field pole provided opposite to
A linear synchronous motor drive type electric switching machine, wherein permanent magnets, which are provided on one surface of the yoke and are alternately inverted in polarity, are inserted into grooves provided in the yoke. 5. A linear synchronous motor drive type electric switch equipped with the linear synchronous motor drive type electric switch machine according to claim 4 provided with the spacing piece according to claim 1, 2 or 3. Description: Machine. 6. A linear synchronous motor drive type electric switching machine in which a tongue rail movable in a fixed basic rail of a branch device of a train track is driven by a linear synchronous motor, wherein the linear synchronous motor is a case. , A fixed part composed of a plurality of iron cores attached to the upper and lower inner surfaces of the case, and windings provided on each of the iron cores, a yoke sandwiched between the fixed parts, and fixed parts on both sides of the yoke. Consisting of a movable part composed of a permanent magnet as a field pole provided opposite to
A linear synchronous motor drive type electric transfer machine, wherein a non-magnetic material portion is provided in a portion of the yoke corresponding to a gap between permanent magnets attached to the yoke. 7. A linear synchronous motor drive type electric switch comprising the linear synchronous motor drive type electric switching machine according to claim 6 provided with the spacing piece according to claim 1, 2 or 3. Machine. 8. A linear synchronous motor drive type electric switching machine according to claim 6 or 7, wherein a groove into which the permanent magnet according to claim 4 is inserted is provided. Rolling machine. 9. A linear synchronous motor drive type electric switching machine in which a tongue rail which is movable with respect to a fixed basic rail of a branch device of a train track is driven by a linear synchronous motor, wherein the linear synchronous motor is a case. , A fixed part composed of a plurality of iron cores attached to the upper and lower inner surfaces of the case, and windings provided on each of the iron cores, a yoke sandwiched between the fixed parts, and fixed parts on both sides of the yoke. Consisting of a movable part composed of a permanent magnet as a field pole provided opposite to
A linear synchronous motor drive type electric switching machine characterized in that the movable part is covered with a protective film. 10. The linear synchronous motor drive type electric switching machine according to claim 9, wherein the protective film is formed by applying a resin. 11. The linear synchronous motor drive type electric switching machine according to claim 9, wherein the protective film is formed by laminating a film. 12. A linear synchronous motor drive type electric switching machine according to claim 9, 10 or 11, wherein the spacing piece according to claim 1, 2 or 3 is provided. Type electric turning machine. 13. A linear synchronous motor drive type electric switching machine according to claim 9, 10, 11 or 12, wherein a groove in which the permanent magnet according to claim 4 is inserted is provided. Synchronous motor drive type electric switching machine. 14. A linear synchronous motor drive type electric switching machine according to claim 9, 10, 11, 12 or 13, wherein the magnetic body part according to claim 6 is provided. Driven electric switch. 15. In a linear synchronous motor drive type electric turning machine in which a tongue rail which is movable with respect to a fixed basic rail of a train track branching device is driven by a linear synchronous motor, the linear synchronous motor is a case. , A fixed part composed of a plurality of iron cores attached to the upper and lower inner surfaces of the case, and windings provided on each of the iron cores, a yoke sandwiched between the fixed parts, and fixed parts on both sides of the yoke. Consisting of a movable part composed of a permanent magnet as a field pole provided opposite to
A linear synchronous motor drive characterized in that this permanent magnet is a machinable material, and that the permanent magnet and yoke are provided with screw holes and tightened with a non-magnetic screw to fix the permanent magnet to the yoke. Type electric turning machine. 16. A linear synchronous motor drive type electric switching machine according to claim 15, wherein the magnetic body part according to claim 6 is provided.