JP4831460B2 - Electric snow melting device structure for slab turnout - Google Patents

Description

  The present invention relates to a snow melting apparatus structure for preventing malfunction due to snow accumulation or freezing during snowfall by heating a rail branching device installed on a track slab with an electric heater.

As shown in FIG. 12, the branching device installed on the slab is arranged with the adjustment plate 110 formed of a hard resin and the track pad 111 formed of an elastic material such as rubber on the slab S. A floor plate 112 that supports the rail is mounted thereon, and a lateral pressure receiving metal fitting 113 is fixed around the floor plate 112 by anchor bolts 114, and a basic rail BR and a tongrel TR are mounted on the upper surface of the floor plate 112. It has become.
Conventionally, as a snow melting device for heating such a slab branching device, an electric hot air type snow melting device that is installed on both sides of the branching device and blows warm air to the branching device has been used (for example, Patent Document 1). reference).

JP 7-268801 A

The electric hot air type snow melting device has poor heating efficiency because the branching device to be heated and the heat source are separated from each other, and the supply power is excessive to heat the branching device to a temperature sufficient for melting snow, saving power. There was a problem that could not be planned.
In terms of the efficiency of heating the branching device, an apparatus having a structure in which a heater is directly connected to the branching device to conduct heat is superior to electric hot air type snow melting device, and power saving is also possible. However, in the slab branching device, first, the heat resistance of the adjustment plate and the track pad stacked on the lower side of the floor board is low, and when the branching device is directly heated by the heater, the adjustment plate and the track pad are heated by the heater. Both of them deteriorate and cause unevenness of the track, which deteriorates the ride comfort of the vehicle and deteriorates other track components. Secondly, the lateral pressure receiving metal fittings that fix the floor plate protrude around the floor plate. Therefore, since there is no space for attaching a heater, the actual situation is that a snow melting device having a structure in which the slab branching device is directly heated by the heater is not used.

  In view of such problems of the prior art, the present invention configures a snow melting device that is directly attached to a branching device installed on a slab and heats it, and heats the branching device on the slab efficiently. The task is to ensure the rail switching operation.

In order to solve the above-mentioned problem, the present invention provides an electric snow melting apparatus for a slab branching device for heating a rail branching unit supported on a floor plate fixed on the slab with a lateral pressure fitting, An adjustment plate and a track pad, which are installed to be overlapped between the slab and the floor plate, and are formed with heat resistance, and a long steel material having an L-shaped cross section. A heater holding frame formed by joining a part to a side surface of a support part that is integrally fixed to the floor board and supports a tongrel of the floor board, and an outer peripheral surface formed in a shape that comes into close contact with the side surface of the floor board inside of the outer package made of a metal material of high thermal conductivity, linear or a heater formed by integrally insert the heater body formed into a rod, loaded heater its exterior to the heater holding frame door the wood circumferential surface of the floor And having a structure which is mounted and held in a state in contact with the Gleyre supporting portion side.

In the present invention, the adjusting plate is formed by laminating an epoxy resin on a glass cloth base material, and the track pad is formed by using silicon rubber as a main material, both of which are excellent in heat resistance and cold resistance.
Molded plates made of thermoplastic resin (HMP, PA plates) and variable pads made of unsaturated polyester resin or vinyl ester resin that have been used as adjustment plates in the past have a high temperature usage limit of 100 to 150 ° C and can be used as track pads. Since the styrene-butadiene rubber that has been used has a high temperature use limit of 110 ° C., there is a risk of deterioration due to the heat of the heater reaching a heating temperature of about 120 ° C., and the heating temperature is low (70 for a hot air snow melting device). ˜80 ° C.). On the other hand, in the present invention, the glass cloth base epoxy resin laminated plate has a heat resistance of 180 ° C., and the silicon rubber has a heat resistance of 180 ° C., so that the adjusting plate and the track pad formed by these are heated by the heat of the heater. There is no deterioration, and the floor board can be heated to a high temperature with a heater. There will be no problems such as the occurrence of unevenness of the track, the deterioration of the riding comfort of the vehicle, and the deterioration of other track parts, which are caused by the deterioration of the adjusting plate and the track pad. Since the adjusting plate and the track pad are excellent in heat resistance, it is not necessary to insert a heat insulating plate between the track pad and the floor plate.
The adjusting plate can be formed by impregnating a glass cloth with a mixture mainly composed of an epoxy resin to form a base material, and laminating and pressing the mixture. The track pad can be formed of high-strength type silicon rubber.

Moreover, in this invention, a heater is attached to the side surface of the rail support part of the floor board which supports a tongrel, and a floor board is heated. This is because the floor plate is fixed by bolting a lateral pressure receiving bracket that surrounds the floor plate, but it is difficult to attach a heater to the circumferential surface of the floor plate because the width between the floor plate and the lateral pressure receiving bracket is narrow, This is because, in particular, by concentrating the heat of the heater at the upper center of the floor plate that supports the Tongrel, the floor plate can be efficiently heated to obtain a sufficient snow melting effect.
In order to prevent the end of the heater from striking against the lateral pressure receiving bracket when the heater is attached to the floor plate, it is preferable that the lateral pressure receiving bracket is provided with a concave gap into which the heater end enters.

As a heater to be attached to the floor plate, various heaters formed in a linear shape or a bar shape that can be brought into close contact with a narrow side surface of a floor plate having no height, for example, a sheathed heater or a thin tube heater in which a heating wire is insulated with magnesium A tubular heater, a strip-shaped heater in which a heating element is sheathed with a heat-resistant material, a thin square sheet heater, or the like can be used.
In order to securely and stably fix the heater to the side of the floor plate, and to protect the heater and ensure its operation, the heater is composed of a linear or rod-shaped heater body that is a heating element made of a metal material with high thermal conductivity. It is preferable to package and integrate. As the exterior material, a metal material having high thermal conductivity such as aluminum or copper is used, and the outer peripheral surface thereof is formed into a flat shape so as to be in close contact with the side surface of the floor plate, and can be formed to have a length corresponding to the side surface of the floor plate. it can.
For example, the heater body, which is a heating element, and the exterior material are integrated, for example, the exterior material is provided in a hollow cylindrical shape, the heater body is inserted together with a pressing member such as a leaf spring, and the surface thereof is the inner peripheral surface of the exterior material. It can carry out by the means to stick to. A groove is formed along the longitudinal direction of the outer peripheral surface of the exterior material, and the heater body is inserted into the groove and the heater body is joined to the groove inner surface. The heater main body may be fixed and integrated in the groove portion by closing with a heat insulating material having a low rate and caulking the groove edge on the outer surface of the heat insulating material.

In order to prevent the heater from coming off from the side of the floor plate even when subjected to vibrations when the branching device is activated or an impact when passing through the vehicle, a heater holding frame is fixed to the side of the floor plate, and the heater is placed in the heater holding frame. It is preferable that the heater is loaded and fixed in a state where the heater is pressed against the side surface of the floor plate using fixing means such as a bolt. A plate spring may be loaded as fixing means in the heater holding frame, and the heater may be pressed and fixed to the side surface of the floor plate with the plate spring.

  According to the present invention, since the adjusting plate and the track pad have high heat resistance, even if the heating temperature of the heater is set high and the branching device is heated to a high temperature, both members deteriorate due to heat. Rather, it is possible to configure a snow melting device that is directly attached to a branching device and exhibits high snow melting ability. In addition, since the heater is attached to the support portion that supports the Tongler of the floor board, the heat of the heater can be concentrated on the attached part to efficiently heat the floor board, and the heater is a heater holding frame. Since it is held on the side surface of the floor plate so as not to be detached, the floor plate is heated by making firm contact with the floor plate, thereby ensuring a reliable rail switching operation of the branching device.

A preferred embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing a slab branching device to which the electric snow melting apparatus structure of the present invention is applied without drawing a rail supported on a floor board, and FIG. 2 is a case where a heater is removed from the state of FIG. FIG.

  As shown in the figure, in the snow melting apparatus structure 1 of this embodiment, an adjustment plate 2 and a track pad 3 are placed on a slab, and a floor plate 5 that supports a rail is placed thereon. Is provided with a lateral pressure receiving bracket 4 and bolted to be fixed on the slab. Also, heater holding frames 6 and 6 are integrally provided on both side surfaces of the support portion for supporting the tongrel of the floor plate 5, respectively. The floor plate 5 can be heated by the heater 7 loaded and held in the heater holding frame 6.

  Specifically, the adjustment plate 2 is formed by laminating a plurality of base materials formed by impregnating a glass cloth with a mixture containing epoxy resin as a main component, and is adjusted appropriately according to the state of the slab plate on the site where the branching device is installed. It is press-molded to a thickness. The adjustment plate 2 is sized so that the lower surface of the floor plate 5 is almost fully overlapped, and as shown in FIG. 3, the adjustment plate 2 is formed in a shape in which the four corners of the rectangular plate are cut away so as not to interfere with the insulating plate described later. It is.

  The track pad 3 is formed using a high-strength type silicon rubber with an appropriate thickness and a slightly larger size than the adjustment plate 2, and is provided in a structure that overlaps the adjustment plate 2.

  As shown in FIG. 4, the lateral pressure receiving metal fitting 4 is formed in a frame shape by welding steel materials 42 and 42 to both sides of the lateral pressure receiving plates 41 and 41 having bolt insertion holes 41a and 41a. The lateral pressure receiving plates 41 and 41 are provided with a protruding step portion 41b having a flange-shaped recess 41c opened at the upper edge. The lateral pressure receiving metal fitting 4 is provided with a floor plate pressing metal fitting 43, a coil spring 44, and the like. The end of the T-bolt 46 through which the washer 45 is inserted is engaged, and the nut 47 is attached to the other end of the T-bolt 46 in a state where the edge of the floor plate pressing metal fitting 43 is engaged with the groove 5 a of the floor plate 5. The floor plate 5 can be fixed between the lateral pressure receiving plates 41 and 41 (see FIG. 2). Further, as shown in the side view in FIG. 4, one protruding step 41 b of the opposing lateral pressure receiving plates 41, 41 is provided narrower than the other protruding step 41 b, that is, the protruding step Both sides of 41b are cut away so that the end of the heater 7 fixed to the floor plate 5 does not collide with the protruding step 41b.

  As shown in FIG. 5, the floor plate 5 is provided with a support portion 5 a for supporting the basic rail and a support portion 5 b for supporting a tongrel projecting higher than that on the upper surface of the rectangular steel material. The concave grooves 5c and 5c into which the edge portions are engaged are formed. In addition, heater holding frames 6 and 6 are integrally fixed to both side surfaces of the support portion 5b.

  As shown in FIG. 6, the heater holding frames 6, 6 are made of a long steel material having an L-shaped cross section, and the edges of the upright surface portion 6 a and the upper surface portion 6 b are joined to the floor plate 5 on the side surface of the floor plate 5. It is fixed to one piece. A plurality of through holes 6 c through which bolts 61 for fixing the heater 7 are inserted are provided in the elevation surface portion 6 a of the heater holding frame 6.

As shown in FIGS. 7 and 8, the heater 7 includes a tubular heater body 72 as a heating element and a stainless steel plate 73 as a heat insulating material inserted in an aluminum exterior body 71 as an exterior material. It is configured.
Specifically, the exterior body 71 is formed in an elongated shape with a thickness that can be inserted into the heater holding frame 6 by extrusion molding, and as shown in FIG. 7, one side thereof is formed on the side surface of the support portion 5 b of the floor plate 5. On the other side, a concave groove 712 extending continuously in the longitudinal direction of the exterior body is provided.
The groove portion 712 is formed by connecting a slit 712b having a width and a thickness in which the stainless steel plate 73 can be fitted into a space portion 712a that is hollow at the substantially central portion of the exterior body and has the same inner diameter as the outer diameter of the heater body 72. On the outside of the slit 712b, the locking pieces 712c and 712c are protruded facing each other across the groove 712. Further, the exterior body 71 is gently bent at a position corresponding to the length substantially the same as that of the heater holding frame 6 from the front end.
The tubular heater main body 72 and the stainless steel plate 73 are both provided with substantially the same length as the exterior body 71. Each heater main body 72 is inserted almost fully into the space 712a, and the stainless steel plate 73 is provided with the slit. It fits in 712c.
The heater 7 has a heater main body 72 inserted into the space 712a of the groove 712 of the exterior body 71, a power supply connector 72a connected to the end of the inserted heater main body 72, and a stainless steel plate in the slit 712b. 73 is inserted, and in this state, the locking pieces 712c and 712c are bent toward the stainless steel plate 73 and caulked inside the groove portion 712, and the heater main body 72 and the stainless steel plate 73 are fixed inside the exterior body.
As shown in FIG. 9, the heaters 7 and 7 are attached to the floor plate 5 in the heater holding frame 6 with the heater 7 facing sideways so that the flat portion 711 of the heater 7 contacts the side surface of the floor plate 5. Then, a bolt 61 is screwed into each through-hole 6c of the heater holding frame 6 with a nut 62 interposed therebetween, and the end of the heater 7 crimped by the locking pieces 712c and 712c is pressed with the tip of the bolt 61 to obtain a flat surface portion 711. Is carried out by bringing it into close contact with the side surface of the floor plate support 5b.

  The snow melting apparatus structure 1 of this embodiment comprising these members has an adjustment plate 2 and a track pad 3 overlaid on a slab, a floor plate 5 is installed thereon, and an insulating plate is installed on the slabs on both sides of the floor plate 5. Then, the lateral pressure receiving metal fitting 4 is mounted on the insulating plate, the horizontal pressure receiving metal fitting 4 and the insulating plate are fixed to the slab through anchor bolts 8, and the floor plate 5 is attached by the floor plate holding metal fittings 43, 43 attached to the horizontal pressure receiving metal fitting 4. Fixedly installed. On the upper surface of the floor plate 5 fixed on the slab, a basic rail is laid on the support portion 5a, and a tongrel is laid on the support portion 5b, and the heater holding unitarily fixed to the side surface of the support portion 5b is held. The heaters 7 and 7 are respectively loaded in the frames 6 and 6 and fixed by bolting to complete the attachment of the snow melting device constituting body 1 and the rail branching device.

In the snow melting apparatus structure 1 installed in this way, the heaters 7 and 7 are attached to both side surfaces of the support portion 5b that supports the tongrel of the floor board 5, and the heat of both heaters 7 is concentrated on the support portion 5b. The floor plate 5 is efficiently heated to prevent the tongrel from becoming inoperable due to snow accumulation or freezing during snowfall. In addition, since the adjusting plate 2 and the track pad 3 have high heat resistance, there is no possibility of deterioration due to heating of the heater 7, and the floor plate 5 can be heated to a high temperature by the heater 7. The heater 7 is firmly fixed to the side surface of the floor plate 5 by the heater holding frame 6, and there is no possibility that the heater 7 will come off due to the movement of the rail or the vibration when passing through the vehicle.
The heater 7 is limited in its bending radius and cannot be bent greatly. However, the protruding step portion 41b of one of the lateral pressure receiving plates 41 of the lateral pressure receiving metal fitting 4 is provided with a narrow width so that the arrangement space at the end of the heater 7 is reduced. Since it is ensured, the end portion of the heater 7 does not hit the lateral pressure receiving plate 41, and the heater 7 can be easily attached and detached.

  FIG. 10 shows another embodiment, in which the end portion of the heater 7 is bent in a U shape via the adapter 74, and a power supply cable 75 connected to the adapter 74 is arranged on the side surface of the lateral pressure receiving fitting 4. Wiring through 76. By bending the power supply cable 75 in an arbitrary direction with the adapter 74, it is possible to perform wiring according to the situation of the site where the branching unit is installed. FIG. 11 shows another embodiment in which the end portion of the heater 7 is bent at an appropriate angle and direction via the adapter 74.

  The illustrated form is an example, and the electric snow melting apparatus structure and its constituent members of the present invention can be provided in other appropriate configurations, shapes, and forms, depending on the installation status of the branching device. .

It is a top view of the electric snow melting apparatus structure of one Embodiment concerning this invention. It is a front view of the state which removed the heater from the snow melting apparatus of FIG. It is a top view of the adjustment board of one embodiment concerning the present invention. It is the front view, top view, and side view of a lateral pressure receiving metal fitting of the form of FIG. It is the front view and top view of the floorboard of the form of FIG. It is the front view of the rail holding frame of the form of FIG. 1, and its BB sectional drawing. It is the figure which fractured | ruptured and showed the principal part of the heater of the form of FIG. It is the VIII-VIII sectional view taken on the line of FIG. It is sectional drawing of the state which attached the heater to the floor board. It is the principal part enlarged plan view of the electric snow melting apparatus structure of other embodiment of this invention, and its BB sectional drawing. (A), (B) is an external view of the other form of a heater. It is the figure which showed the structure of the slab branching device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Snow-melting apparatus structure body, 2 adjustment board, 3 track pad, 4 lateral pressure receiving metal fittings, 5 floor board, 6 heater holding frame, 7 heater, 8 anchor bolt

Claims (1)

In the electric snow melting apparatus structure for a slab branching device for heating a rail branching device supported on a floor plate fixed on the slab with a lateral pressure receiving metal fitting,
An adjustment plate and a track pad that are installed to be heat-resistant and are installed between the slab and the floor plate;
It is made of a long steel material having an L-shaped cross section, and is formed by joining the side surface of the support portion that supports the tongrel of the floor plate, with the rising edge portion and the edge portion of the upper surface portion thereof fixed integrally to the floor plate. A heater holding frame;
A heater body formed in a linear shape or a rod shape is integrated into an exterior material made of a metal material having a high thermal conductivity formed so that its outer peripheral surface is in close contact with the side surface of the floor plate. With a heater,
An electric snow melting device for a slab branching device having a structure in which a heater loaded in the heater holding frame is attached while holding a peripheral surface of an exterior material in contact with a side surface of a tongrel support portion of the floor board. Device structure.

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