JPH0978507A - Heating device for track girder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily fit a heating device heating a travel face in contact with the back face of the travel face in a narrow track girder. SOLUTION: Vertical ribs 16 are installed at prescribed intervals in a track girder 10, and horizontal fitting plates 17 are fixed to the vertical ribs 16. A fitting base is mounted on a pair of fitting plates 17, and a heating device 20 is stored on it. Since the interval between the fixed legs 25 of the heating device 20 is spread downward, the manufacturing error can be adjusted by the inclination angle of the fixed legs 25. After the heating device 20 is mounted, it is fixed by screws from below.

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 freezing of track girders for running rubber tire vehicles such as monorail vehicles.

[0002]

2. Description of the Related Art As a device for preventing freezing of track girders for running rubber tire vehicles such as monorail vehicles, a snow removing device with a brush attached to the vehicle as in Japanese Examined Patent Publication No. 60-15764 is used to reduce snow on the running surface under the girders. It is known that snow is removed, but due to the amount of snowfall and the quality of snow, the snow remaining on the running surface is not completely removed by the tires of the vehicle and becomes ice-burned, causing a problem of tire slippage. there were. In particular, steel girders are susceptible to temperature, unlike concrete girders.

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

Further, in a vertically moving expansion joint of a movable end of a monorail branching device for cold districts, a heater is attached to prevent freezing of a pin type hinge portion, and a heater is incorporated in a lower rail of a railroad vehicle. Then, there are those that prevent freezing and those that wind a tape-shaped heater for heating pipes.

[0005]

The above-mentioned conventional heater embedded in the road surface is based on the heat conduction of concrete, and there is no countermeasure for improving the efficiency of heat transfer. Further, the expansion joint of the monorail branch device, the heater for the rail under the railroad vehicle door, and the like do not have a highly accurate configuration that follows the displacement between the heater body and the metal body.

An object of the present invention is to provide a heating device which can be easily mounted within a narrow track girder in a case where a heating device is brought into contact with the back surface of the traveling surface to heat the traveling surface.

[0007]

According to the present invention, a plurality of vertical ribs are installed inside a track girder at predetermined intervals along the longitudinal direction of the track girder, and a mounting seat is installed horizontally on the vertical rib. It comprises a second mounting seat mounted on a pair of mounting seats facing each other, and a plurality of fixed legs supporting a plate on which an electric heating wire is arranged. The plurality of fixed legs are widened downwardly. 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 distance between the fixed legs is widened, and the fixed leg and the second mounting seat are It is characterized in that it is fixed with a screw from below through the elongated hole.

[0008]

The gap between the mounting plate and the plate on the traveling surface widens downward and can be adjusted by the inclination angle of the fixed leg or the like. And since there is an elongated hole, it can be easily fixed with screws. Since the screws are fixed from below, this can be done easily.

[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 quadrangular, the upper plate 11 is a running surface on which the vehicle running wheels 7 rest, and the side plate 13 is mounted on the side guiding plate 8.
Is provided with a receiving seat 15. Inside the track girder 10, ribs 16 are provided at predetermined intervals along the longitudinal direction of the track girder 10. The rib 16 is a plate 11 on the upper running surface, a lower surface,
It is welded to the side plate 13. A heating device 2 for the rib 16
The mounting seat 17 for 0 is installed horizontally. The mounting seat 17 is installed so as to face the pair of ribs 16, 16 facing each other.

The heating device 20 includes a heating wire 21 (not limited to the nichrome wire containing a tube shown in the figure), a heat conducting plate 22 on the upper surface of the heating wire 21, a heat insulating material 23 on the lower surface of the heating wire 21, and a heat insulating material. A bottom plate 24 on the lower surface of 23 and four fixing legs 25 fixed to the bottom plate 24 and spreading 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 is mounted on a horizontal mounting seat 31. The mounting seat 31 is mounted on the rib 16 and rests horizontally on the mounting seat 17. 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 portion in the traveling direction of the vehicle). The plate 33 serves to prevent the mounting seat 31 from rising.

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

The fixed leg 25 can be bent by a little force. That is, the inclination angle of the fixed leg 25 changes. 2 is an exploded perspective view, the height of the heat generating portion is large,
Although the height of the fixed leg 25 is low, 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 manufacturing error).

The mounting seat 31 is mounted on the mounting seat 17, and the heating device 20 is mounted thereon. By changing the inclination angle of the fixed leg 25, 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 31a of the mounting seat 31 is a long hole that is long in the direction of inclination of the fixed leg 25.

In such a construction, the work is carried out by entering from the manhole on the lower surface of the track girder 10 into the inside. The size of the track girder is large enough for a person to perform work. First. The mounting seat 31 is attached to the mounting seat 17 of the track girder 10. Since the end of the mounting seat 31 in the longitudinal direction is U-shaped, one end in the longitudinal direction is raised above the other end so as to be positioned above the mounting seat 17, and the U-shaped part on the lower end side is mounted on the mounting seat 17.
And the mounting seat 17 is inserted into the U-shaped portion. Next, the mounting seat 31 is moved to the other end side, and the mounting seat 17 on the other end side is inserted into the U-shaped portion on the other end. Next, the heating device 2
0 is pushed between the mounting seat 31 and the traveling plate 11.
The dimensional error between the two is absorbed by the 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 above-mentioned work procedure. In this case, the distance between the two mounting plates 31 and 31 is larger than the width dimension of the heating device 20. The other heating device 20 is mounted by raising it from between the two mounting plates 31 and 31.

Next, the wedges 35 are inserted into the longitudinal ends of the mounting plate 31. A pressing screw 40 can be screwed into the opposing wedges 35, 35. One end of the pressing screw 40 is a right-hand thread and the other end is a left-hand thread. The pressing screw 40 prevents the mounting plates 31 and 31 from moving. 41 is a fixed nut.

According to the hanging structure, the arrangement of the mounting plate 31, the insertion of the heating device 20 and the fixing by the screw, and the fixing by the wedge 35 and the pressing screw 40 can all be performed from below. Therefore, 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, etc. can be absorbed by bending of the fixed leg 25.

In addition, as a method of adjusting the pressing force, there is a plan to pull the fixed leg 25 to the center, or to provide a turnbuckle between the fixed legs 25 and 25 to pull the fixed leg 25 and then fix it with bolts.

[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 attached in a narrow space inside the track girder.

[Brief description of drawings]

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

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

FIG. 3 is a vertical cross-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 the front page (72) Inventor Noboru Iwamoto 794 Azuma Higashitoyo, Kudamatsu City, Yamaguchi Prefecture Hitachi Hitachi Kasado Engineering Co., Ltd.

Claims (1)

[Claims] 1. A plurality of vertical ribs installed inside the track girder at predetermined intervals along the longitudinal direction of the track girder, a mounting seat horizontally installed on the vertical rib, and a pair of opposing mounting seats. It is composed of a second mounting seat on which it is mounted and a plurality of fixed legs that support a plate on which heating wires are arranged, and the plurality of fixed legs have wide intervals at the lower side. It is placed on the upper surface of the second mounting leg and has an elongated hole in a direction in which the distance between the fixed legs is widened, and the fixed leg and the second mounting seat are downwardly moved through the elongated hole. Orbital girder heating device characterized by being fixed with screws.