JP2516449B2 - Side beam support method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a guideway for a sidewall floating type linear motor car, and more particularly to a method for supporting a sidewall beam in a sidewall beam type guideway.

(Prior Art) A sidewall levitation system, which has been recently developed as a running system for a linear motor car, mounts a levitation / guidance coil and a propulsion coil on a sidewall beam, and the levitation force, guide force, and propulsion force are applied from the sidewall beam. Is given to a linear motor car, and has many advantages such as high efficiency and simple system.

And even in the side wall levitation method, the side wall beam was manufactured in the factory as a unit made of precast concrete,
The sidewall beam method that is installed on the roadbed at the site is easy to adjust during installation, and can provide high long-wavelength accuracy.
It is attracting attention because it can be easily adjusted even for the subsidence of the roadbed.

(Problems to be Solved by the Invention) On the other hand, in the side wall levitation method, a reaction force for supporting the weight of the linear motor car and a reaction force of the guide force are applied to the side wall beam when the linear motor car passes, and the side wall beam is moved in the width direction thereof. It acts as a moment to knock down.

When such a reaction force is received, it is necessary to minimize the displacement amount of the side wall beam from the viewpoints of traveling stability of the linear motor car and prevention of vehicle vibration.

In addition to the above reaction force, if the linear motor car collides with the sidewall beam due to an accident such as a failure of the superconducting magnet, the impact force due to the collision is absorbed and the displacement amount of the sidewall beam falls within a predetermined range. It is necessary to keep it to about several mm.

Furthermore, it is necessary to consider expansion and contraction in the longitudinal direction of the side wall beam due to temperature change in the side wall beam type guideway in which the side wall beam having a length of about 12 m is installed on the roadbed at the site.

Therefore, how to support the sidewall beam on the roadbed has been a problem in practical use of the linear motor car.

An object of the present invention is to minimize the amount of displacement of the sidewall beam even when a reaction force for supporting the weight of the linear motor car or a reaction force of the guide force acts, and the linear motor car can be applied to the sidewall beam due to an unexpected accident. In case of collision,
A sidewall beam support that can quickly absorb the impact force, suppress the amount of displacement of the sidewall beam within a predetermined range, and allow the sidewall beam to expand and contract due to temperature change to stably support the sidewall beam. There is a way to provide.

(Means for Solving the Problems) The configuration of the present invention for achieving the above-mentioned object will be described with reference to the drawings corresponding to the embodiments.

The present invention is a method for supporting the side wall beam 19 constituting the guideway 3 of the linear motor car 1 on the roadbed 17, in which the elastic member 33 and the energy absorber 39 are provided between the roadbed 17 and the side wall beam 19. Support the side wall beam 19 on the roadbed 17,
The elastic member 33 is deformed so that the expansion and contraction of the side wall beam 19 due to the temperature change and the angular displacement due to the live load are released, and the energy absorber 39 absorbs the shock received by the side wall beam 19.

(Operation) When the reaction force for supporting the weight of the linear motor car 1 and the reaction force of the guide force act, the displacement amount of the side wall beam 19 is minimized by the restoring moment depending on the compression force of the elastic member 33. Further, by absorbing the impact force caused by the collision of the linear motor car 1 by the energy absorber 39, the displacement amount of the sidewall beam 19 is suppressed within a predetermined range. The expansion and contraction of the sidewall beam 19 in the longitudinal direction due to the temperature change is caused by the elastic member.
The side wall beam 19 is stably supported by being released by the deformation of 33.

By using lead as the energy absorber 39, due to the property peculiar to lead, it exhibits an excellent impact absorbing ability against a sudden impact due to a collision or the like, and also against the expansion and contraction of the side wall beam due to a temperature change. The elastic member 33 is allowed to deform without any action.

(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a sectional view of the guideway, and FIG. 2 is a side view of the same.

Reference numeral 1 is a linear motor car, 3 is its guide way, the linear motor car 1 travels by a side wall levitating method, and the guide way 3 is constructed by a side wall beam method.

The linear motor car 1 includes a bogie frame 7 of a vehicle body frame 5.

The body frame 5 and the bogie frame 7 are connected via links and springs, and the superconducting magnets 11 are provided on both sides of the bogie frame 7.
Further, the bogie frame 7 is provided with rubber support wheels 13 and guide wheels 15 for stopping and low speed.

The guideway 3 includes a roadbed 17 and side wall beams 19 standing on both sides thereof.

The side wall beam 19 has a predetermined length along the traveling direction of the linear motor car 1, is made of precast concrete, is manufactured in advance in a factory, and is installed and fixed on site.

A concrete traveling path 21 corresponding to the wheels 13 is provided on the roadbed 17, and a joint member 23 is embedded in the roadbed 17 as shown in FIG.
Is connected to the anchor plate 25 inside the roadbed 17.

The sidewall beam 19 faces the superconducting magnet 11 and
V-shaped levitation / guide coils 27 are continuously arranged, and elliptical propulsion coils 29 are arranged outside the levitation / guidance coil 27 so as to be alternately stacked in the width direction of the sidewall beam 19. There is.

The side wall beam 19 is supported on the roadbed 17 at two longitudinal ends of the side wall beam 19, as shown in FIGS. 3 to 5, two tension members 31 each made of a bar and two elastic members. Member 33
And two energy absorbers 39.

FIG. 3 is a front view showing a supporting structure of the sidewall beam 19, and FIG.
The figure is the same side view, and FIG. 5 is a view taken along the line AA of FIG.

The side wall beam 19 is located near the longitudinal end of the side wall beam 19.
Two holes 35 are formed in the central portion of the width direction 19 of the sidewall beam 19 at intervals in the longitudinal direction thereof.
It is arranged by inserting 35. The diameter of the hole 35 is 31
It is formed with a clearance margin larger than the diameter of.

The elastic members 33 are arranged at substantially equal intervals in the width direction of the sidewall beam 19 with respect to an imaginary line connecting the two tension members 31.

In the embodiment, the elastic member 33 is formed by superimposing a thin rubber plate 33A and a stainless thin plate 33B which is a non-magnetic material on top of each other as shown in a plan view of FIG. 6 and a sectional side view of FIG. The laminated structure has a substantially square shape, and a hole 37 is formed in the center.

The energy absorber 39 is arranged so as to be inserted into the hole 37. In the embodiment, cylindrical lead is used as the energy absorber 39, but in addition to lead, granular materials such as high damping rubber, viscoelastic material, stainless beads or glass beads made of non-magnetic material can be used. .

41 is a mortar pedestal placed on the roadbed 17, 43 is a shim plate for height adjustment placed on the pedestal 41,
The pedestal 41 and the shim plate 43 are both made of a non-magnetic material, the pedestal 41 has a rectangular shape, and the shim plate 43 has a substantially square shape.

To attach the side wall beam 19 to the roadbed 17, the elastic member 33 in which the energy absorber 39 is incorporated is placed on the shim plate 43, and then the side wall beam 19 is placed on the elastic member 33.

Next, the lower end of the tension member 31 is screwed to the joint member 23, and the anchor plate embedded in the upper surface of the side wall beam 19 is attached.
A nut 47 is coupled to the upper end of the tension member 31 on the 45, the elastic member 33 is compressed by the nut 47 and the tension member 31, and the side wall beam
Tighten and fix 19 to the roadbed 17.

In the embodiment, the sidewall beam 19 on the two elastic members 33 is used.
The self-weight of each end was 5t, while the tightening force of the tension member 31 was 20t.

Since this embodiment is configured as described above, the sidewall beam 19
When an impact is applied to the side wall 19, the energy absorber 39 absorbs the impact and the amount of change of the sidewall beam 19 can be suppressed within a predetermined range.

Further, when the side wall beam 19 expands and contracts in the longitudinal direction due to a temperature change, the elastic member 33 is deformed to escape this deformation, and the side wall beam 19 can be stably supported.

In this case, since the tension member 31 is vertically penetrated into the hole 35 of the side wall beam 19 with a clearance, and the length thereof is set large, the tension member 31 can easily follow the expansion and contraction deformation of the side wall beam 19, and the side wall beam 19 It is advantageous in escaping the expansion and contraction deformation.

Further, in the embodiment, since lead is used as the energy absorber 39, the gradual expansion and contraction deformation of the sidewall beam 19 due to temperature change shows a fluid property and is allowed without resisting this, and a sudden impact is generated. When it acts on the sidewall beam 19, it is quickly absorbed by the elasto-plastic action.

Further, since lead as the energy absorber 39 is vertically provided inside the elastic member 33, it is not necessary to separately assemble the energy absorber 39, which is advantageous in disposing the lead on the roadbed 17.

Furthermore, due to the tightening force of the tension member 31, lead is elastic member 33.
Since it is densely filled inside and its outer periphery is constrained, it exhibits a better energy absorbing ability and the durability as an energy absorber is improved.

Furthermore, in the embodiment, the elastic member 33 is simply a side wall beam.
Since the elastic member 33 is used by being compressed in advance instead of being used as a supporting member of 19, when the moment based on the reaction force from the linear motor car 1 side acts on the sidewall beam 19,
Since the reaction force due to the compression of the elastic member 33 becomes a moment with the tension member 31 as a fulcrum and acts as a restoring force, the side wall beam
It is advantageous in minimizing the displacement of 19.

In the embodiment, the energy absorber 39 is provided inside the elastic member 33.
Although the description has been given of the case in which the elastic member 33 is vertically installed, the elastic member 33 and the energy absorber 39 may be separately arranged.

Further, the numbers of the elastic members 33 and the energy absorbers 39 are arbitrary, and the cross-sectional shape is also arbitrary such as rectangular, circular or ring-shaped.

(Effects of the Invention) As is apparent from the above description, according to the side wall beam supporting method of the present invention, the energy absorber absorbs the shock and the expansion and contraction of the side wall beam due to the temperature change is escaped by the deformation of the elastic member. Therefore, when a shock is applied to the sidewall beam, the energy absorber can absorb the shock to suppress the displacement amount of the sidewall beam within a predetermined range, and the temperature change causes the sidewall beam to move in the longitudinal direction. When expanded or contracted, the elastic member is deformed to escape the expansion and contraction, and the side wall beam can be stably supported, so that it is possible to realize the side wall beam system which is advantageous in constructing the guideway of the linear motor car.

[Brief description of drawings]

1 is a sectional front view of the guideway, FIG. 2 is a side view of the same, and FIG. 3 is a front view showing a side wall beam installation structure.
4 is a side view of the same, FIG. 5 is a view taken along the line AA of FIG. 3, FIG. 6 is a plan view of the elastic member, and FIG. 7 is a side view of the same. In the figure, 1 is a linear motor car, 3 is a guideway, 17
Is a roadbed, 19 is a side wall beam, 31 is a tension member, 33 is an elastic member,
39 is an energy absorber, 41 is a pedestal, and 43 is a shim plate.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuyuki Matsumoto 2-8 Komitsucho, Kokubunji, Tokyo 38 Inside the Railway Technical Research Institute (72) Inventor Tadatomo Watanabe 2-8 Komitsucho, Kokubunji, Tokyo 38 Inside the Railway Technical Research Institute (72) Inventor Ikuo Shimoda 8 Kirihara-cho, Fujisawa-shi, Kanagawa Prefecture Oiles Industry Co., Ltd. (72) Inventor Shuichi Nagata 8 Kirihara-cho, Fujisawa-shi Kanagawa Prefecture Oiles Industry Co., Ltd.

Claims (3)

(57) [Claims] 1. A method of supporting a side wall beam which constitutes a guideway of a linear motor car on a roadbed, wherein an elastic member and an energy absorber are provided between the roadbed and the side wall beam to place the side wall beam on the roadbed. A supporting method for supporting a side wall beam, wherein expansion and contraction due to temperature change of the side wall beam is released by deformation of the elastic member, and a shock received by the side wall beam is absorbed by the energy absorber. 2. The method of supporting a sidewall beam according to claim 1, wherein the energy absorber is lead. 3. The method for supporting a sidewall beam according to claim 1, wherein the lead is densely filled in the elastic member.