JP4883421B2 - Snow extinguishing panel - Google Patents

Description

  The present invention relates to a snow extinguishing panel installed around a rail laid in a snowy area.

  On railway lines laid in snowy areas, in order to operate the train safely, a snow-dissipating panel is installed around the rails, and the snow accumulated on the snow-dissipating panel (the snow removed and the snow that fell) is removed. Melting with the heat medium (for example, warm water, such as groundwater) which flows the back of a snow panel is performed.

  As this type of snow-absorbing device, for example, in Patent Document 1, a thin flat plate whose upper surface is a heat radiating surface, a plurality of rows of wide and shallow concave portions joined to the lower surface of the flat plate, and each row of the concave portions are connected to each other. A grooved plate having continuous recesses composed of wide and shallow recesses, and pipe connection ports provided at both ends of a wide and shallow flow path formed by the continuous wide and shallow recesses of the grooved plate and the flat plate, In the snow-dissipating heat dissipating device, an extension is provided on the thin strip that surrounds the flat plate and the grooved plate, and a gap is provided between the lower surface of the grooved plate and the laying surface. There is described a snow-dissipating heat radiator having the piping connection port opened. In addition, it is described that the belt thin plate surrounding the periphery of the grooved plate is formed in a box shape to increase the strength of the snow-dissipating radiator.

  Patent Document 2 describes that the snow-dissipating heat radiator described in Patent Document 1 is installed with a gradient with respect to the horizontal. Patent Document 3 describes that the grooved plate in Patent Document 1 is formed by joining a linear groove member having a trapezoidal cross section and a U-shaped groove member. And the flat plate and grooved plate which comprise these snow-melting apparatuses are exclusively welded.

Japanese Examined Patent Publication No. 6-76681 Japanese Patent Laid-Open No. 11-152701 JP 2007-85057 A

  However, in the ones described in Patent Documents 1 and 2, large welding distortion occurs during joining. In particular, since one surface of the flat plate and the grooved plate are welded together, the flat plate heat dissipation surface tends to be distorted, and when snow is removed, the concave portion becomes a water pool and rust is generated on the heat dissipation surface. Become. For this reason, a distortion removing process is required after welding and joining. Although the thing of patent document 3 aims at reduction of this distortion removal process, although welding distortion can be reduced, it has not led to eradicating the distortion removal process.

  In addition, if the belt-like sheet formed in a box shape is welded around the grooved plate, there is a problem that the manufacturing cost increases. Furthermore, since this type of snow-absorbing panel is made of steel plate as the main material, its weight is about 100 kg, and when it is configured to be openable and closable for maintenance as described in Patent Document 2, There was also a problem that hands were easily caught between the panel and the installation base.

  The present invention has been made in consideration of the above-described matters, and provides a snow squeeze panel that reduces manufacturing costs and reduces distortion of the heat sink, and solves problems of water pool and corrosion resistance resulting from the distortion of the heat sink. The purpose is that. Another object of the present invention is to provide a snow extinguishing panel that can be safely operated even during maintenance.

  In the present invention, a thin heat radiating flat plate whose upper surface is a heat radiating surface and a lower surface of the heat radiating flat plate are welded and joined, and a zigzag flow path in which a heat medium flows is formed between one surface and the heat radiating flat plate. A snow-melting panel comprising a flow path forming member, wherein the heat-dissipating flat plate is bent in an L shape and a band plate is welded to the bent portion.

  According to said structure, since the circumference | surroundings of the thermal radiation flat plate were bent in L shape, and also it was characterized by having welded and joined the strip | belt plate to this bending part, once by the welding joining of a thermal radiation flat plate and a flow-path formation member, Although welding distortion occurs such that the heat dissipation surface of the heat dissipation flat plate is concave, welding distortion occurs such that the heat dissipation surface of the heat dissipation flat plate is convex by welding the band plate to the bent portion. Accordingly, it is possible to prevent the accumulation of water on the heat radiating surface during snow extinguishing.

Moreover, in this invention, it is desirable that the other end side which is not the welding junction part of the said strip is bent in the L shape.
According to this configuration, it is possible to further increase the strength of the entire snow-absorbing panel and to prevent an accident in which a hand is cut at the end of the band plate.

In the above invention, the flow path forming member has a first nozzle member into which the heat medium flows in, a second nozzle member from which the heat medium flows out, and a trapezoidal cross section disposed therebetween. It consists of a plurality of linear groove members and a plurality of U-shaped groove members to which ends of adjacent linear groove members are connected, and the linear members, the first and second nozzle members, and the U-shaped groove members It is preferable that a seam portion is provided in the connecting portion, the seam portion is fixed, and a flange portion of each straight groove member is welded to the heat radiating plate over the entire length in the longitudinal direction.
According to said structure, while being able to reduce the welding distortion at the time of welding a flow-path formation member to a thermal radiation flat plate, manufacturing cost can be held down.

Further, a plurality of snow-melting / snow-removing panels according to any one of claims 1 to 3 are disposed along the track, and each snow-snipping panel can be lifted from one end, and is provided in a heat medium supply pipe and a discharge pipe. A flexible tube is used for parallel connection, and the band plate can be provided with a handle.
According to this configuration, it is possible to prevent an accident in which a hand is caught between the snow removal panel and the installation base even when the snow removal panel is opened and closed for maintenance.

  According to the snow extinguishing panel according to the present invention, the periphery of the heat radiating flat plate is bent in an L shape, and further, a band plate is welded and joined to the bent portion. Although welding distortion that causes the heat dissipation surface of the heat dissipation flat plate to be concave is generated by welding, welding distortion that causes the heat dissipation surface of the heat dissipation flat plate to be convex occurs by welding the band plate to the bent portion. . Accordingly, it is possible to prevent the accumulation of water on the heat radiating surface during snow extinguishing.

Below, one example of the snow-melting panel concerning the present invention is explained in full detail based on an accompanying drawing.
FIG. 1 is a bottom view of an embodiment of a snow-flushing panel according to the present invention, and FIG. FIG. 3 shows a straight groove member, and FIG. 4 shows a U-shaped member. FIG. 5 shows a cross-sectional view taken along the line CC in FIG. FIG. 6 is a cross-sectional view of the snow-melting panel showing the manufacturing process of the snow-melting panel according to the present invention, and FIG. Moreover, FIG. 8 is sectional drawing which shows the state which installed the snow-melting panel based on this invention.

  As shown in FIGS. 1 and 2, the snow-dissipating panel 1 includes a heat sink plate 2 made of a substantially rectangular thin steel plate, a first nozzle portion 41 into which a fluid flows, and a second nozzle portion 43 through which the fluid is discharged. It is mainly comprised from the flow-path formation member 10 which forms a flow path in a zigzag form so that it may continue, and the strip 20 provided so that the thermal radiation flat plate 2 may be enclosed. The flow path forming member 10 includes a plurality of long straight groove members 11 formed by bending thin steel plates into a substantially trapezoidal cross section, and a plurality of rows of straight groove members 11 are connected to each other by U-shaped groove members 13. A flow path in which fluid flows from the first nozzle portion 41 to the second nozzle portion 43 is formed. Moreover, the hinge part 17 is provided in one of the long sides of the snow-melting panel 1, and the fixing | fixed part 45 for fixing to the installation base is provided in the strip 20 of the short side. Further, reinforcing members 15 (three places in the figure) are provided so that the entire snow-dissipating panel 1 is not twisted or deformed.

  As shown in FIG. 2, the heat radiating plate 2 has a bent portion 2 a that is bent in an L shape around the periphery thereof. The band plate 20 has an edge portion 23 that is bent in an L shape so that one end is inside the snow-melting panel, and a welded portion 21 that is overlapped with the bent portion 2a of the heat radiating plate 2 on the other end side. Is formed.

  As shown in FIG. 3, the straight groove member 11 has a trapezoidal cross section (upper side width Wb, bottom side width Wa) in order to increase the contact area between the hot water flowing inside and the heat radiating plate 2. This is a long member having a flange 11a over the entire length (L2) on both sides.

  Further, as shown in FIG. 4, the U-shaped groove member 13 includes a semicircular portion 13a and a stepped portion 13b. As shown in FIG. 6, each U-shaped groove member 13 is installed so that the end of the linear groove member 11 is inserted into the stepped portion 13b. These U-shaped groove members 13 are juxtaposed at both ends of the linear groove member 11, and the adjacent linear groove members communicate with each other by the U-shaped groove member 13 and the linear groove member 11. One flow path is formed (see FIG. 1).

Then, the manufacturing process of the snow-melting panel 1 is demonstrated in detail with reference to FIG. 6, FIG.
First, as shown in FIG. 6A, a predetermined number of linear groove members 11 are arranged on the heat radiating plate 2. Further, a U-shaped groove member 13 (not shown) is arranged at the end of the linear groove member 11 so as to form a folded flow path (see FIG. 1). Then, the flange portions 11 a formed on both ends of the linear groove member 11 and the heat radiating flat plate 2 are welded over the entire length of the flow path forming member 10. The welded joint is preferably seam welding or arc welding.

  At this time, only the surface on which the flow path forming member 10 is welded and joined is heated on the heat radiating flat plate 2. Then, the flange portion 11a subjected to welding contracts and does not contract as a portion that is not affected by the thermal effect of the linear groove member 11 (most portion excluding the flange portion 11a of the linear groove member 11). As shown in (2), distortion occurs so that the heat radiating surface 2b of the thin heat radiating plate 2 is concave. In this state, the water that has been removed by the snow squeezing panel accumulates in the concave surface, and the heat radiating plate 2 is corroded from that portion.

Therefore, as shown in FIG. 6B, the periphery of the heat radiating plate 2 is bent using a press or the like to form a bent portion 2a. And the welding part 21 of the strip 20 is piled up on this bending part 2a, and it weld-joins. Then, as shown in FIG. 7 (b), the bent portion 2a contracts due to the influence of the welding of the band plate 20, so that the heat radiating surface 2b of the heat radiating plate 2 is distorted. Finally, the first nozzle member 41 and the second nozzle member 43 are connected to both ends of the flow path forming member 10 and subjected to a hot dip galvanizing process, so that the snow-melting panel 1 is obtained. If the heat dissipating surface 2b is provided as a convex surface, water does not accumulate on the heat dissipating surface, and the snow erasing panel can be prevented from corroding.
Note that the amount of distortion caused by welding can be increased or decreased by adjusting the welding length or the amount of welding heat.

Then, the use condition of the snow-melting panel 1 is demonstrated in detail using FIG.
As shown in FIG. 8A, a concrete foundation 61 is provided along a track such as a track. The foundation 61 is formed with a side groove 63 for discharging rainwater or arranging electric wires or the like. A supply pipe 51 and a drain pipe 53 are provided along the side groove wall 65 to supply and drain the heat medium to the snow-melting panel 1. An installation base 50 is provided on the foundation 61, and the snow extinguishing panel 1 is installed on the installation base 50 so that one side can be opened and closed by a hinge portion 17 (see FIG. 1).

  A swivel joint 57 is connected to the first nozzle and the second nozzle of the snow extinguishing panel 1, and the supply pipe 51 and the drain pipe 53 are connected by a flexible pipe 55. Note that a plurality of the snow extinguishing panels 1 are installed along the track.

  For example, an antifreeze liquid is used as the heat medium. When snow accumulation starts, the antifreeze liquid is heated to about 10 ° C. in a boiler chamber (not shown), and is supplied to the snow erasing panel 1 via the supply pipe 51 by a pump. The snow that has accumulated on the snow-dissipating panel 1 is melted by heat exchange here, and the antifreeze is returned to the boiler chamber via the drain pipe 53 and heated to about 10 ° C. again.

  By the way, there is a case where maintenance of an electric wire or the like disposed in the side groove 63 is necessary. In that case, as shown in FIG. 8 (b), the snow removal panel 1 can be opened upward using the handle 59. By using the handle 59 to open and close the snow-fighting panel 1, it is possible to prevent an accident such as a finger being caught.

It is a bottom view of one Example of the snow-melting panel which concerns on this invention. It is AA sectional drawing in FIG. A linear groove member is shown, (a) is a front view, (b) is a top view. A U-shaped member is shown, (a) is a top view, (b) is the BB sectional drawing of (a). It is CC sectional drawing in FIG. It is sectional drawing of the snow-melting panel which shows the manufacturing process of the snow-melting panel which concerns on this invention. It is a model side view which shows the state of the welding distortion in a welding process. It is sectional drawing which shows the state which installed the snow-melting panel which concerns on this invention.

Explanation of symbols

1: snow extinguishing panel, 2: heat dissipation flat plate, 2a: bent portion, 2b: heat dissipation surface,
10: flow path forming member, 11: linear groove member, 11a: brim portion, 13: U-shaped groove member, 13a: semicircular diameter portion, 13b: stepped portion (joint portion), 15: reinforcing member, 17: hinge Part,
20: strip, 21: welded portion, 23: edge portion,
41: 1st nozzle member, 43: 2nd nozzle member, 45: Fixed part,
50: Installation base, 51: Supply pipe, 53: Drain pipe, 55: Flexible pipe, 57: Swivel joint, 59: Handle,
61: foundation, 63: gutter, 65: gutter wall,

Claims (4)

A thin heat radiating flat plate whose upper surface is a heat radiating surface, and a flow path forming member that welds and joins to the lower surface of the heat radiating flat plate and forms a zigzag flow path in which a heat medium flows between the one surface and the heat radiating flat plate. In the snow-melting panel with
A snow extinguishing panel, wherein the periphery of the heat radiating flat plate is bent in an L shape, and a band plate is welded to the bent portion. The snow extinguishing panel according to claim 1, wherein the other end side of the strip that is not a welded joint is bent into an L shape. The flow path forming member includes a first nozzle member into which the heat medium flows, a second nozzle member from which the heat medium flows out, and a plurality of rows of linear groove members having a trapezoidal cross section disposed therebetween. And a plurality of U-shaped groove members to which end portions of adjacent linear groove members are connected, and a joint portion at a connecting portion between the linear member, the first and second nozzle members, and the U-shaped groove member The seam portion is fixed, and the straight groove member is welded and joined to the heat radiating plate over the entire length in the longitudinal direction. The snow extinguishing panel described. A plurality of the snow-melting / snow-removing panels according to any one of claims 1 to 3 are arranged along a track, and each snow-snipping panel can be lifted from one end, and a flexible pipe is provided as a heat medium supply pipe and a discharge pipe. A snow extinguishing panel, wherein the strips are connected in parallel, and a handle is provided on the strip.

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