JP3161946B2 - Track girder heating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for preventing a track girder for running a rubber tire vehicle such as a monorail vehicle from freezing.

[0002]

2. Description of the Related Art As a device for preventing a track girder from running a rubber tire vehicle such as a monorail vehicle, etc., a snow removing device with a brush attached to the vehicle as disclosed in Japanese Patent Publication No. 60-15754 reduces snow on a running surface under a girder. Although it is known that snow is removed, the amount of snowfall and snow quality does not result in complete snow removal, but the snow remaining on the running surface is compacted by the tires of the vehicle and becomes an ice burn, causing the tire to slip. there were. In particular, steel girders, unlike concrete girders, are easily affected by temperature.

[0003] As a countermeasure against snowfall on these roads and tracks on a new transportation system, there is an example in which a heater is embedded in a road surface to melt snow.

[0004] In addition, a heater is mounted on a vertical movement type expansion joint of a movable end of a monorail branching device in a cold district specification to prevent freezing of a pin-type hinge portion, and a heater is provided in a lower rail of a door in a railcar. To prevent freezing and to wind a tape-like heater for heating piping.

[0005]

The above-mentioned conventional heaters embedded in a road surface are based only on the heat conduction of concrete, and there is no measure for increasing the efficiency of heat transfer. Further, the monorail branching expansion joint, the heater for the rail under the railroad vehicle door, and the like do not have a high-precision configuration that follows the displacement between the heater body and the metal body.

SUMMARY OF THE INVENTION An object of the present invention is to provide a heating device in which a heating device is brought into contact with the back surface of a running surface to heat the running surface and which can be easily mounted in a narrow track girder.

[0007]

SUMMARY OF THE INVENTION The present invention comprises a plurality of vertical ribs installed at predetermined intervals along the longitudinal direction of a track girder inside a track girder, and a mounting seat horizontally installed on the vertical ribs. It comprises a second mounting seat mounted on a pair of opposing mounting seats, and a plurality of fixed legs for supporting a plate on which a heating wire is disposed at an upper portion, and the interval between the plurality of fixed legs is widened downward. The fixed leg rests on the upper surface of the second mounting leg, has an elongated hole in a direction in which the distance between the fixed leg is widened, and the fixed leg and the second mounting seat are It is fixed with screws from below through the elongated holes.

[0008]

The distance between the mounting plate and the plate on the running surface extends downward and can be adjusted by the inclination angle of the fixed leg. And since there is a long hole, fixing with a screw can be facilitated. Since the screws are fixed from below, they can be easily formed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. Steel track girder 10 for monorail vehicles
The cross-section is substantially rectangular, and the plate 11 on the upper surface is a running surface on which the running wheels 7 of the vehicle are mounted.
Receiving seat 15 is provided. Ribs 16 are provided inside the track girder 10 at predetermined intervals along the longitudinal direction of the track girder 10. The rib 16 is a plate 11 of the upper running surface, the lower surface,
It is welded to the side plate 13. The heating device 2 is provided on the rib 16.
The mounting seat 17 for the housing 0 is installed horizontally. The mounting seat 17 is installed so as to face the pair of ribs 16 and 16 facing each other.

The heating device 20 includes a heating wire 21 (not limited to a nichrome wire in a tube shown in the figure), a heat conductive plate 22 on the upper surface of the heating wire 21, a heat insulating material 23 on a lower surface of the heating wire 21, and a heat insulating material. The bottom plate 24 includes four fixed legs 25 fixed to the bottom plate 24 and extending downward.
By caulking the claws 24a, 22a provided on the bottom plate 24 and the heat conduction plate 22, the heating wire 21, the heat conduction plate 22, the heat insulating material 23, and the bottom plate 24 are integrated.

The fixed leg 25 of the heating device 20 rests on a horizontal mounting seat 31. The mounting seat 31 rests horizontally on the mounting seat 17 installed on the rib 16. A plate 33 located on the lower surface of the mounting seat 17 is fixed to the lower surface of the end of the mounting seat 17 (the end in the traveling direction of the vehicle). The plate 33 is for preventing the mounting seat 31 from rising.

A wedge 35 can be driven between a guide seat 32 provided at both ends (an end in the traveling direction of the vehicle) of the mounting seat 31 and a guide seat 18 provided on the mounting seat 17. The guide seat 32 is provided on the upper surface of the end of the mounting seat 31, and its upper surface 32b is bent so as to be located above the wedge 35. The upper surface 32b prevents the wedge 35 from floating. The guide seat 32 is inclined 32a with respect to the moving direction of the wedge 35. The inclined portion 32a is located at the center of the track girder 10 in the width direction (perpendicular to the traveling direction of the vehicle).

The fixed leg 25 can be bent by a slightly large force. That is, the inclination angle of the fixed leg 25 changes. Since FIG. 2 is an exploded perspective view, the height of the heat generating portion is large,
Although the height of the fixed leg 25 is reduced, the height of the fixed leg 25 is large as shown in FIG. The height from the bottom surface of the fixed leg 25 to the upper surface of the thermoelectric plate 22 is slightly larger than the height from the upper surface of the mounting seat 17 to the lower surface of the traveling plate 11 (including a manufacturing error).

The mounting seat 31 is mounted on the mounting seat 17, and the heating device 20 is mounted thereon. When the inclination angle of the fixed leg 25 changes, the heat conduction plate 22 comes into close contact with the lower surface of the traveling plate 11. From the lower surface side of the mounting seat 31, the fixing leg 25 is fixed with a fixing screw. The screw hole 31 a of the mounting seat 31 is a long hole that is long in the inclination direction of the fixed leg 25.

In such a configuration, the work is carried out from the manhole on the lower surface of the track girder 10 to enter the inside. The orbital girder is large enough for a person to perform work. First. The mounting seat 31 is mounted on the mounting seat 17 of the track girder 10. Since the longitudinal end of the mounting seat 31 is U-shaped, one end in the longitudinal direction is raised above the other end, and is positioned above the mounting seat 17.
Side and insert the mounting seat 17 into the U-shaped part. Next, the mounting seat 31 is moved to the other end, and the mounting seat 17 at the other end is inserted into the U-shaped portion at the other end. Next, the heating device 2
0 is inserted between the mounting seat 31 and the traveling plate 11.
Both dimensional errors are absorbed by a change in the inclination angle of the fixed leg 25. Next, the mounting plate 31 and the fixed leg 25 are fixed with screws.

As shown in FIGS. 2 and 3, two heating devices 20 are installed in the width direction of the track girder 10. Another heating device 20 is installed according to the operation procedure. In this case, the distance between the two mounting plates 31, 31 is larger than the width of the heating device 20. Another heating device 20 is lifted up from between the two mounting plates 31, 31 and mounted.

Next, a wedge 35 is inserted into each longitudinal end of the mounting plate 31. A pressing screw 40 can be screwed into the opposed wedges 35 and 35. One end of the pressing screw 40 is a right-hand thread, and the other end is a left-hand thread. The pressing screws 40 prevent the mounting plates 31, 31 from moving. 41 is a fixing nut.

According to the hanging configuration, the arrangement of the mounting plate 31, the insertion of the heating device 20 and the fixing by screws, and the fixing by the wedge 35 and the pressing screw 40 can all be performed from below. For this reason, it can be easily mounted inside the narrow track girder 10.

Manufacturing errors, thermal deformation due to heating, deformation due to running of the vehicle, and the like can be absorbed by bending of the fixed legs 25 that are inclined.

As the adjustment of the pressing force, there is a method in which the fixed leg 25 is pulled toward the center, or a turnbuckle is provided between the fixed legs 25, 25, and then the bolt is fixed.

[0021]

According to the present invention, since the inclination angle of the fixed leg is adjusted and fixed with screws from below, the heating device can be easily mounted in a narrow space inside the track girder.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a heating device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the heating device of FIG.

FIG. 3 is a longitudinal sectional view of FIG.

[Explanation of symbols]

10 ... track girder, 16 ... vertical rib, 17 ... mounting seat, 20 ...
Heating device, 25: fixed leg, 31: mounting seat, 35: wedge.

Continuation of front page (72) Inventor Noboru Iwamoto 794, Higashi-Toyoi, Kazamatsu-shi, Yamaguchi Prefecture Within Hitachi Kasado Engineering Co., Ltd. (58) Fields investigated (Int. Cl. ⁷ , DB name) E01B 19/00 E01B 25 / 08-25/10 E01B 25/22 E01B 25/28

Claims (1)

(57) [Claims] 1. A plurality of vertical ribs installed at predetermined intervals along the longitudinal direction of a track girder inside a track girder, a mounting seat horizontally installed on the vertical ribs, and a pair of opposing mounting seats. A second mounting seat mounted thereon, and a plurality of fixed legs for supporting a plate on which a heating wire is disposed at an upper portion, wherein a distance between the plurality of fixed legs is widened downward, and the fixed legs are The fixed leg is placed on the upper surface of the second mounting leg, and has an elongated hole in a direction in which the interval between the fixed legs is widened. The fixed leg and the second mounting seat are downwardly positioned through the elongated hole. A heating device for a track girder, wherein the heating device is fixed with screws.