JPH1088503A - Rails for electromagnetic levitation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide electromagnetic levitation rails with a structure that is replaceable abraded levitation rails by easy operations. SOLUTION: Electromagnetic levitation rails for a magnetic levitation type rolling stock are provided with a pair of magnetic poles 4 and 5 that form a magnetic closed circuit between the poles and an electromagnet mounted to a travelling body to levitate this travelling body, and a pair of friction materials of a mechanical brake device mounted to the travelling body are provided to pinch the magnet pole 4. Then the magnet pole 4 engaged with the friction materials is structured to be detachable from a main rail 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic levitation rail structure for a magnetic levitation railway.

[0002]

2. Description of the Related Art An attraction type magnetic levitation rail in a magnetic levitation railway has a function of magnetically levitating the traveling body with a levitation electromagnet on the traveling body side, an action of applying a propulsive force to the traveling body by driving a linear motor, And at the time of deceleration of the running body, at the time of emergency braking,
When stopped, the regenerative braking of the linear motor and the braking action of the mechanical brake device play a major role. FIG. 6 shows an example of a structure conventionally known as such a lifting rail 101. The levitation rail 101 travels when a mounting arm 102 extends horizontally from one side of a main body having legs 104 and 105 in a downward U-shape and is fixed to a levitation rail support member (track girder or the like) 106. It constitutes a ground-side trajectory laid in the running direction of the body.

The main function of the rail 101 will be described with reference to the rail 101 shown in FIG. 6 as an example. Reference numeral 107 denotes a levitation electromagnet, which is mounted on a traveling body 110.
A U-shaped magnet core (iron core) 108 around which a coil 109 is wound is formed by a pair of legs 104, 1 of the rail 101.
The rail 101 acts to lift the traveling body 110 by the magnetic attraction of the electromagnet 107. The structure for assembling the electromagnet 107 for levitation to the traveling body is not limited, but the suspension may be appropriately restrained with respect to the vehicle body by a suspension device (not shown) including an air spring or the like, and the propulsion force may be transmitted. In many cases, it is assembled to an independent suspended structure commonly referred to as a module connected to a module.

Reference numeral 102 denotes a reaction plate on the secondary side of the linear motor assembled so as to cover the upper surface of the main body of the lifting rail 101. The primary side of the linear motor on the traveling body (not shown) is closely opposed above the reaction plate 102. Thus, the driving of the linear motor generates a propulsive force and a regenerative braking action therebetween.

The operation performed with the mechanical brake device will be described with reference to FIGS. That is, in these figures, reference numeral 120 denotes a brake device, and its caliper 1
Reference numeral 21 denotes three sets of fastening means comprising a bolt-nut member and a pair of divided bodies 122 and 123 disposed on both sides of the magnet core 108 (the arm on the side facing the one leg 104 of the rail 101). The fastening is integrated.
The first and second fastening means are arranged in a pair in parallel at a substantially middle position in the vertical direction of the caliper 121, and the sleeve 124 penetrating the magnet core 108 has both ends engaged with the inner surfaces of the pair of divided bodies. The bolt member 1 restricts the approach of the two, and penetrates through holes formed in the divided bodies 122 and 123 and the sleeve 124.
When the nut 25 and the nut member 126 screwed to the thread portion at the tip thereof are fastened, the divided bodies 122 and 123 are fastened to the sleeve 124 to be integrally fastened. The third fastening means is provided between the lower end portions of the pair of divided bodies 122 and 123 extending below the magnet core 108 and to the threaded portions on both sides of the long nut member 127 sandwiched therebetween. 1
Bolt member 1 inserted through a through hole formed in 23
28 is screwed and fastened. By these first to third fastening means, the pair of divided bodies 122 and 123 become one integrated caliper 121. And in such a brake device, the piston 1
29, the friction material 131 is pressed against the rail 101 (104) by the supply of pressure air from a pneumatic source (not shown), and by the reaction, the sleeves of the first and second fastening means pivot through the through holes of the magnet core 108. 7, the caliper 121 is moved to the right in FIG. 7, and the other friction material 132 is pressed against the rail 101 (104). Get action.
Reference numerals 133 and 134 denote springs for positioning the caliper 121 at a neutral position when braking is not performed.
Reference numerals 5 and 136 denote thrust links for transmitting the braking force generated on the friction members 131 and 132 to the traveling body (for example, the module).

[0006]

As described above, the magnetically levitated rail in the magnetically levitated railway is not only used as a traveling guide but also as an object for obtaining a magnetically levitating force, a propulsion force, and a regenerative force. The object to obtain the braking force and the object to obtain the braking force by the engagement of the mechanical brake device play a role that is not required for rails of wheel rolling railways. However, it has been found that the following problem is a problem when implemented on a business route.

That is, for example, at a station or the like, it is necessary to stop the traveling body at a specified position, and for stopping the traveling body at this time, a mechanical brake device is used as a functionally suitable stopping means. . Accordingly, the engagement operation of clamping the rail by the friction material is frequently repeated at a specific place, and the friction material and the friction surface of the rail are worn, albeit little by little, with this engagement. As a result, the amount of wear increases and increases. The rail wear resulting from this causes, in part, a step between the wear section and the non-wear section, and applies an excessive load to the structure of the mechanical brake apparatus, causing the brake apparatus, which is an important security part, to have an excessive load. This can cause damage to individual parts, and in extreme cases, may cause accidents. In addition, since this rail creates a magnetic circuit for magnetic attraction for floating between the magnet core on the opposite electromagnet side, the rail in a specific section is worn and its thickness does not change. However, it is not suitable for securing a stable magnetic attraction force.

In order to cope with such a problem, it is conceivable to replace a worn rail every predetermined period. Usually, the rail is formed to extend over a considerable length (for example, 10 m or more). In addition, since the weight becomes large (for example, 1 t or more), the replacement operation is not easy, and it is necessary to use a large heavy machine such as a crane, and it is extremely difficult to replace the rail in a place where the large heavy machine cannot access.

SUMMARY OF THE INVENTION The present invention has been made to solve these problems, and one of the objects thereof is to provide a suction type having a structure in which a few workers can update a worn rail by simple replacement work. A magnetic levitation rail is provided.

Another object of the present invention is to reduce the frequency of rail replacement without increasing the overall cost by forming a part of the floating rail with excellent wear resistance. It is an object of the present invention to provide a magnetic levitation rail.

[0011]

SUMMARY OF THE INVENTION The features of the present invention for achieving the above object are as described in the claims.

[0012] The attraction type magnetic levitation rail according to the first aspect of the present invention has a pair of magnetic poles forming a magnetic closed circuit for levitating the traveling body with an electromagnet attached to the traveling body, The friction material is engaged with a magnetically levitated rail of an attraction type magnetic levitation in which a pair of friction materials of a mechanical brake device mounted on a traveling body are provided so as to clamp one of the magnetic poles. The magnetic pole is configured to be detachable from the rail body.

In the above construction, the magnetic pole detachable from the rail body is provided only in a specific portion of the long rail where engagement of the friction material of the mechanical brake device is frequently repeated. Can be. The means for detaching is not limited, but usually includes a structure in which a detachable magnetic pole portion is fastened and fixed with a bolt screwed into a screw hole provided in the rail body.

According to the present invention, the replacement portion can be limited to a small size, and the rail can be updated with a small number of workers and simple replacement work.

According to a second aspect of the present invention, there is provided a machine having a pair of magnetic poles forming a magnetic closed circuit for levitating a traveling body between the electromagnet assembled to the traveling body and the traveling body. In a magnetic levitation rail of a magnetic levitation railway in which a pair of friction materials of a type brake device is provided so as to clamp one of the magnetic poles, a surface portion of a magnetic pole with which the friction material is engaged is: It is characterized in that it is configured to be detachable from the rail body.

According to the present invention, the replacement portion can be further reduced, so that the replacement operation is simplified.

According to a third aspect of the present invention, there is provided a machine having a pair of magnetic poles forming a magnetic closed circuit for levitating a traveling body between the electromagnet assembled to the traveling body, and being assembled to the traveling body. In a magnetic levitation rail of a magnetic levitation railway in which a pair of friction materials of a type brake device is provided so as to clamp one of the magnetic poles, a surface portion of a magnetic pole with which the friction material is engaged is: It is characterized by having a structure subjected to wear resistance treatment.

According to the present invention, the range in which abrasion resistance treatment by surface hardening such as carburizing treatment, which is relatively expensive, is limited to a part, so that rail replacement can be performed without increasing the cost of the entire rail. Can be reduced in frequency. It should be noted that such a structure in which the wear resistance treatment is performed only on the surface portion of the magnetic pole is not limited to the case where the rail is partially detachable, and is also effective for an integrally-structured rail that cannot be detached. .

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 In the present embodiment shown in FIG.
The mounting arm 6 extends in a horizontal direction from one side of the vehicle and is fixed to a floating rail support member (not shown) such as a track girder to constitute a ground-side track laid in the traveling direction of the traveling body. Has basically the same structure as the lifting rail 101 described with reference to FIG. Reference numeral 3 denotes a reaction plate on the secondary side of the linear motor, which is assembled so as to cover the upper surface of the floating rail main body 2.

The feature of this embodiment is that one leg (magnetic pole) 4 of the pair of legs (magnetic poles) 4 and 5 in FIG. ,
The magnetic pole exchange member 11 forming the frictionally engaged surface of the magnetic pole and brake device is configured to be detachably assembled. That is, in this example, the female screw hole 7 that opens downward is formed in the short leg 4 of the rail main body 2, and the through hole 12 and the counterbore 16 that match the female screw hole 7 are formed through. 6 can be formed by fixing with the bolts 13 and the same rail as the shape of FIG. 6, and this is provided with the through hole 12 of the magnetic pole exchange member 11 and the female screw of the rail body 2. The magnetic pole exchange member 11 is fastened and fixed by screwing the shaft portion 14 of the bolt 13 into the hole 7. In addition,
Reference numeral 15 denotes a large-diameter head portion of the bolt, which is provided so as to engage with the stepped portion of the counterbore hole 16 to securely fasten the magnetic pole exchange member 11 to the rail body 2.

FIG. 1B shows the magnetic pole exchange member 11 described above.
Is relatively short in the longitudinal direction (for example, several tens of cm to several meters)
Are described in a range defined by the range.

Embodiment 2 The present embodiment shown in FIG. 2 is a magnetic pole exchange member 1 according to the first embodiment.
1, the magnetic pole exchange member 21 is formed with a step at the end thereof, and the adjacent magnetic pole exchange members 21 are provided with a structure in which the adjacent magnetic pole exchange members 21 are steppedly engaged with each other at the stepped portion 22 and fastened with bolts 23 The rail structure is different in that it is fixed, but the other structures are the same.

With such a structure, in addition to the same effect as in the first embodiment, the adjacent magnetic pole exchange member 2 can be formed by forming the stepped engagement portion with high precision.
1 can be eliminated.

Embodiment 3 In the present embodiment shown in FIG. 3, the lower corners of both ends of the magnetic pole exchange member 31 are formed as stepped steps 32, and the adjacent ones of the magnetic pole exchange members 31 are connected to the adjacent step. An example is shown in which a pressing member 33 that engages over a portion 32 is applied, and this is fixed by fastening with the bolt 34.

Embodiment 4 The embodiment shown in FIG. 4 is a pair of legs (magnetic poles) shown in FIG.
One of the legs (magnetic poles) 4 is provided as a thin portion 41 having a small thickness in a direction perpendicular to the track, and frictional engagement surfaces of the brake device are provided on both side surfaces of the thin portion. Is formed so that the magnetic pole exchange member 42 is detachably assembled and fastened and fixed with bolts 43. The bolt 43 used in this example needs to be embedded in the counterbore using a flat head bolt and a countersunk bolt so that the bolt 43 does not protrude from the friction surface with which the friction material of the brake device engages.

Also in this embodiment, an effect is obtained that the worn portion of the rail can be replaced by a simple operation, limited to the friction surface with which the friction material of the mechanical brake device is engaged.

Fifth Embodiment A levitation rail 51 of this example shown in FIG. 5 has surface portions 541 and 542 of one leg (magnetic pole) 54 of the levitation rail 101 in FIG. Is a part whose surface is hardened by carburizing treatment or the like. 52 is a rail body, 53 is a reaction plate on the secondary side of the linear motor assembled so as to cover the upper surface of the floating rail body 2, 55 is the other leg (magnetic pole), and 56 is horizontal from one side of the rail body 2. The mounting arm extends in the direction.

According to this embodiment, by performing the surface hardening treatment only on the friction material engaging surface of the rail, it is possible to reduce wear caused by frequent engagement of the friction material of the brake device, Moreover, since the entire rail is not subjected to a surface hardening treatment, an advantage that cost increase can be suppressed is obtained. The abrasion resistance treatment is not limited to carburizing treatment.

The present invention is not limited to the above-described embodiment. For example, the replacement member of the first to fourth embodiments is made of a material having excellent wear resistance to reduce the replacement frequency. It is also preferable to reduce it.

[0030]

According to the present invention, by adopting a structure in which the magnetic poles with which the friction material of the attraction type magnetic levitation rail of the magnetic levitation type rail is engaged can be attached to and detached from the rail main body, a slight amount is obtained. Workers can replace worn rails by simple replacement work, which is an extremely excellent effect compared to replacing heavy rails with large heavy equipment such as cranes. Also, by reducing the friction material engaging surface of the brake device of the floating rail to have a structure excellent in wear resistance, the frequency of rail replacement is reduced without increasing the overall cost. The effect that it can be performed is produced.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a schematic configuration of a first embodiment of a floating rail in which a part of the present invention is replaceable, (a) is a longitudinal sectional view, and (b) is a front view.

FIGS. 2A and 2B are diagrams showing a schematic configuration of a second embodiment of a floating rail in which a part of the present invention is replaceable, wherein FIG. 2A is a longitudinal sectional view and FIG. 2B is a front view.

FIGS. 3A and 3B are diagrams showing a configuration outline of a third embodiment of a floating rail in which a part of the present invention is replaceable, wherein FIG. 3A is a longitudinal sectional view and FIG. 3B is a front view.

FIGS. 4A and 4B are diagrams showing a configuration outline of a fourth embodiment of a levitation rail in which a part of the present invention is replaceable, wherein FIG. 4A is a longitudinal sectional view and FIG. 4B is a front view.

FIGS. 5A and 5B are diagrams showing a configuration outline of a fifth embodiment of a levitation rail having a wear-resistant structure according to the present invention, wherein FIG. 5A is a longitudinal sectional view and FIG. 5B is a front view.

FIG. 6 is a longitudinal sectional view for explaining a configuration of a conventional floating rail.

FIG. 7 is a longitudinal sectional view showing a relationship between a brake device applied to the flying rail of FIG. 6 and the flying rail.

FIG. 8 is a perspective view showing a relationship between the brake device of FIG. 7 and a lifting rail.

[Explanation of symbols]

1 ... Left rail, 2 ... Rail body, 3 ...
Reaction plate, 4,5 ... leg (magnetic pole), 6.
..Mounting arm, 7 female screw hole, 11 magnetic pole exchange member, 12 through hole, 13 bolt, 14 ...
Shaft, 15: Large diameter head, 16: Counterbore, 21
... magnetic pole exchange member, 22 ... stepped portion, 23 ... bolt, 31 ... magnetic pole exchange member, 32 ... stepped portion, 3
3 ... holding member, 34 ... bolt, 41 ... thin portion, 42 ... magnetic pole exchange member, 43 ... bolt, 51
... Flying rail, 52 ... Rail body, 53 ...
・ Reaction plate, 54 ... leg (magnetic pole), 54
1,542: Surface portion, 55: Leg (magnetic pole), 56
... Mounting arm.

Claims (3)

[Claims] 1. A pair of frictions of a mechanical brake device having a pair of magnetic poles forming a magnetic closed circuit for levitating the traveling body between the traveling body and an electromagnet assembled to the traveling body. A magnetic levitation rail of a magnetic levitation railway in which a material is provided so as to clamp one of the magnetic poles, wherein a magnetic pole with which the friction material is engaged is detachably attached to the rail body. A magnetic levitation rail for suction. 2. A pair of friction of a mechanical brake device having a pair of magnetic poles forming a magnetic closed circuit for floating the traveling body between the traveling body and an electromagnet assembled to the traveling body. In a magnetic levitation rail of a magnetic levitation type rail provided with a material for clamping one of the magnetic poles, a surface portion of the magnetic pole with which the friction material engages can be attached to and detached from the rail body. A magnetic levitation rail for suction, characterized in that: 3. A pair of frictions of a mechanical brake device having a pair of magnetic poles forming a magnetic closed circuit for levitating the traveling body between the traveling body and an electromagnet assembled to the traveling body. A magnetic levitation rail for a magnetic levitation railway in which a material is provided so as to clamp one of the magnetic poles, wherein a surface portion of the magnetic pole with which the friction material is engaged is subjected to wear resistance treatment. A magnetic levitation rail for suction.