JP3077796B2 - Fall prevention frame for snow melting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a buried snow melting machine for treating snow in a snowy area, and to a fall prevention frame for preventing a snow melting worker from falling into a snow melting room.

[0002]

2. Description of the Related Art As disclosed in Japanese Patent Publication No. 47-44938, such a fall prevention frame of a snow melting machine is known to be located below a snow melting chamber lid which can be opened and closed.

[0003]

The above-mentioned fall prevention frame is provided separately from the snow melting chamber cover. The snow-melting chamber lid is configured to be sufficiently robust so that even if heavy objects such as vehicles pass over it, the snow-melting chamber lid is not damaged. For this reason, the snow-melting chamber lid becomes heavy, and it was difficult to open and close it every time the snow-melting operation was performed.

Further, in a combustion type snow melting machine in which combustion gas by a burner is completely burned in a furnace body of a snow melting room, the above-mentioned fall prevention frame is not provided due to the shallow depth of the snow melting room. Was. However, the furnace body of the combustion-type snow melting machine is at a high temperature, and there is a risk that a snow melting worker may be burned when falling into the snow melting room.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a snow melting machine fall prevention frame which does not break even if the snow melting room lid is lightly constructed and which can ensure the safety of a snow melting worker even with a combustion type snow melting machine. And

[0006]

According to the first aspect of the present invention, there is provided a fall prevention frame for a snow melting machine, wherein the upper opening of the snow melting chamber 3 is closed in a buried type snow melting machine which throws snow into the snow melting chamber 3 and melts the snow. Openable and closable snow melting chamber lids 15 and 16 are provided, and closed snow melting chamber lids 15 and 16 are provided.
16 fall prevention frame 30 for receiving a load applied to the intermediate portion of the snow melting chamber cover 15, 16 positioned below is provided for, snow melting chamber 3 central side of meltwater
A fall prevention frame on the watering reflector rod 25 that guides you in the direction and sprays water
30 and the fall prevention frame 30 is provided with grids 31 and 3 which cover almost the entire upper opening of the snow melting chamber 3 when the snow melting chamber lids 15 and 16 are opened.
2, 33.

The falling prevention frame of the snow melting machine according to the second aspect of the present invention
A burner room 2 and a snow melting room 3 are provided in the main body tank 1, a burner 21 is provided in the burner room 2, a furnace body 22 is provided in the snow melting room 3, and snow is introduced into the snow melting room 3 to melt snow. The snow melting chamber covers 15 and 16 that can be opened and closed to close the upper opening of the snow melting chamber 3 are provided, and a fall prevention frame 30 is provided below the closed snow melting chamber lids 15 and 16, and the snow melting water is supplied to the center of the snow melting chamber 3. Guide in the direction
Place the fall prevention frame 30 on the sprinkler reflector 25
The fall prevention frame 30 is located above the furnace body 22, and the fall prevention frame 30 is a grid 31, 32, 33 that covers almost the entire upper opening of the snow melting chamber 3 when the snow melting chamber lids 15, 16 are opened. Things.

The falling prevention frame of the snow melting machine according to the third aspect of the present invention
The grid 31, 32, 33 of the fall prevention frame 30 has a rectangular cross section in which the length in the vertical direction is longer than the length in the horizontal direction, and the load resistance is enhanced.

[0009]

According to the first aspect of the present invention, openable and closable snow melting chamber lids 15 and 16 for closing the upper opening of the snow melting chamber 3 are provided, and the snow melting chamber is located below the closed snow melting chamber lids 15 and 16. Room lids 15, 16
A fall prevention frame 30 is provided to receive the load applied to the middle part of the housing. The load applied to the snow melting chamber covers 15 and 16 is also supported by the fall prevention frame 30, and the snow melting chamber covers 15 and 16 are not damaged even if the load strength is reduced. Can be reduced in weight.

According to the second aspect of the present invention, a burner 21 is provided in the burner chamber 2, a furnace body 22 is provided in the snow melting chamber 3, and a snow melting chamber 3 is provided. the openable snow melting chamber lid 15 for closing the upper opening is provided, rotation of the
The fall prevention frame 30 is located above the furnace body 22, and the fall prevention frame 30 is provided as grids 31, 32, 33 that cover almost the entire upper opening of the snow melting chamber 3 when the snow melting chamber lids 15, 16 are opened. Even when the snow melting worker falls, the grids 31, 32, 33 of the fall prevention frame 30 do not come into contact with the high temperature furnace body 22.

According to the third aspect of the present invention, the grid of the fall prevention frame 30 is provided.
A rectangular cross-section where the vertical length of 31, 32, and 33 is longer than the horizontal length to increase load resistance, high load strength from above, and an edge effect that applies local stress to snow Can be

[0012]

An embodiment of the present invention will be described below with reference to the drawings.

The snow melting machine shown in FIG. 1 is of a buried type, and has a box-shaped main body tank 1 having an upper surface opening buried under the ground E, and a burner chamber 2 divided by partitions 5 and 6 in the main body tank 1. And snowmelt room 3
And a pump chamber 4.

A rectangular burner chamber lid 11 screwed is provided at a portion of the upper surface of the burner chamber 2 which is open to the ground E so that the burner chamber lid 11 cannot be opened or closed except during maintenance. An operation box cover that can be opened and closed at one corner of the burner room cover 11
12 is provided, and the operation box lid 12 is closed when the burner chamber lid 11
It is formed to be almost integral with the operation box when opened.
13 and the intake cylinder 14 appear.

A portion of the upper surface of the snow melting chamber 3 which is open to the ground E has an opening area of 100 cm in the lateral direction and 74 cm in the front and rear direction, and a pair of left and right snow melting chamber lids 15 and 16 which can be opened and closed with one side as a fulcrum. The snow melting chamber covers 15 and 16 are 52 cm in the lateral direction and 77 cm in the front-rear direction. A pair of snowmelt compartment lids 1
An access prevention frame 17 is provided between 5 and 16 to prevent the snow melting chamber covers 15 and 16 from being closed unnecessarily or to prevent the operator from stepping off.

An openable and closable pump chamber cover 18 is provided at a portion of the upper surface of the pump chamber 4 which is open to the ground E, and the pump chamber cover 18 is opened when cleaning a dust receiving net provided in the pump chamber 4. It is closed during snow melting work.

The openable and closable operation box lid 12, the snow melting chamber lids 15, 16 and the pump chamber lid 18 are locked so that they cannot be opened and closed when not in use to prevent unnecessary danger.

A burner 21 is provided on the partition wall 5 in the burner chamber 2, and an oil feed pipe for feeding kerosene from outside the main body tank 1 is connected to the burner 21. Is discharged from a hole provided in the partition wall 5 in the direction of the snow melting chamber 3. The other part of the partition wall 5 is sealed so that snow and snowmelt water in the snow melting chamber 3 do not enter the burner chamber 2.

At the center of the snow melting chamber 3, a long cylindrical body 22 having a substantially cylindrical shape is provided from the partition wall 5. The furnace body 22 has a volume substantially half the volume of the snow melting chamber 3 and is inclined downward from the horizontal direction. The furnace body 22 communicates with the burner 21 to completely burn and exhaust the combustion gas from the burner 21, dissipates heat and melts the snow put into the snow melting chamber 3, and reduces the temperature of the snow melting water accumulated in the snow melting chamber 3. increase. The snowmelt water in the snowmelt chamber 3 is about 1 /
The specified water level is set so that 3 is immersed, and the snowmelt water exceeding the specified water level naturally flows out from the drain. Exhaust from the furnace body 22 also circulates in the snow melting chamber 3 to melt snow and escape.

A submersible pump 23 is provided in the pump chamber 4, a communication hole is provided in a lower corner of the partition wall 6 between the snow melting chamber 3 and the pump chamber 4, and the snow melting water in the snow melting chamber 3 passes through the dust receiving net and is submerged. It is supplied to the pump 23. The submersible pump 23 supplies the snowmelt water to the sprinkler or drains it from the main tank 1 when the season is over and when it is not in use.

A substantially U-shaped watering pipe 24 is provided around the upper part of the inside of the snow melting chamber 3 so as to surround the furnace body 22. The watering pipe 24 is provided with a plurality of discharge ports and is connected to the submersible pump 23. You. A pair of watering reflector rods 25 are provided above watering pipes 24 located on both side surfaces of the furnace body 22. The sprinkling reflector rod 25 guides the snowmelt water discharged from the sprinkling pipe 24 toward the center of the snowmelting chamber 3 to spray water.

A fall prevention frame 30 extending between a pair of watering reflector plates 25 is placed. The fall prevention frame 30 is located above the furnace body 22. The fall prevention frame 30 is located below the closed snow melting chamber lids 15 and 16 and receives a load applied to a side opposite to the fulcrum of the snow melting chamber lids 15 and 16 and an intermediate portion therefrom to the fulcrum side.

For this reason, the load applied to the snow melting chamber covers 15 and 16 through which heavy objects such as vehicles pass is also supported by the fall prevention frame 30,
Even if the load strength of the snow melting chamber lids 15 and 16 is lowered, they do not bend or break, so that the weight can be reduced.

The fall prevention frame 30 is provided in a lateral direction 7 that covers almost the entire upper opening of the snow melting chamber 3 when the snow melting chamber lids 15 and 16 are opened.
It is 1.5 cm wide and has a size of 73.5 cm in the front-rear direction. The two front and rear lattices 31 placed on the watering reflector plate 25, the four vertical lattices 32 connecting them, and the middle part of the vertical lattice 32. Are provided, and a space is provided between the lattices 31, 32, and 33, and a space is formed between the lattices.

Therefore, even if the snow melting worker falls on the snow melting room 3, the snow melting worker is received by the grids 31, 32, 33 of the fall prevention frame 30, and does not contact the high temperature furnace body 22 therebelow.

The grids 31, 32, 33 of the fall prevention frame 30 have a width 19
It is made of a flat steel having a thickness of up to 25 mm and a thickness of 4.5 mm, and has a rectangular section whose length in the vertical direction is longer than the length in the horizontal direction to increase the load resistance.

Therefore, an edge effect is obtained in which the load intensity from above is high in the long vertical direction and local stress is applied to the snow in the short horizontal direction.

Next, the operation will be described together with the method of use.

First, the operation box lid 12 and the snow melting chamber lids 15, 16
, A predetermined amount of water is injected into the snow melting chamber 3 only at the beginning of the season, the submersible pump 23 is operated, and then the burner 21 is turned on.
Ignite.

When snow is put into the snow melting chamber 3, heat is released from the furnace body 22, exhausted from the furnace body 22, and the discharge port 25 of the watering pipe 24 is discharged.
Snowmelt that has been melted due to water spray from the lake and exceeds the specified water level will naturally flow out of the drain.

At this time, the burner 21 is placed in the burner chamber 2,
A furnace body 22 is provided in the snow melting chamber 3, and an openable snow melting chamber lid 15, 16 for opening and closing the upper opening of the snow melting chamber 3 is provided in a buried snow melting machine that throws snow into the snow melting chamber 3 and melts the snow. Fall prevention frame 30
Is located above the furnace body 22, and the fall prevention frame 30 is
When the snow melting chamber 3 is opened, the grids 31, 32, and 33 cover almost the entire upper opening of the snow melting chamber 3. Furnace body
Since there is no contact with 22, the safety of snow melting workers can be measured even with a combustion type snow melting machine.

Also, since the vertical length of the grids 31, 32, 33 of the fall prevention frame 30 is a rectangular cross section longer than the horizontal length, and an edge effect of applying local stress to snow is obtained, The snow that has fallen is easily crushed and refined, and can be efficiently melted.

When the snow melting operation is completed, the burner 21 is extinguished, the operation of the submersible pump 23 is stopped, and the operation box lid 12 and the snow melting chamber lids 15 and 16 are closed and locked. In order to drain the water from the snow melting chamber 3 and the pump chamber 4 only when the season is over, the valve between the submersible pump 23 and the watering pipe 24 is switched to operate the submersible pump 23 to drain water.

There is no problem even if heavy objects such as vehicles pass over the closed snow melting chamber covers 15 and 16.

At this time, openable and closable snow melting chamber covers 15 and 16 for closing the upper opening of the snow melting chamber 3 are provided.
A fall prevention frame 30, which is located below the snow melting chamber lids 15 and 16 and is located below the snow melting chamber lids 15, 16, is provided.
The load applied to 16 is also supported by the fall prevention frame 30, and the snow melting chamber lid
Even if the load strength of the snow melting chambers 15 and 16 is lowered, they can be lightened because they are not damaged.

The grids 31, 32, and 33 of the fall prevention frame 30 have a rectangular cross-section in which the vertical length is longer than the horizontal length to increase the load resistance, and the load strength from above is high. The room lids 15 and 16 can be made lighter.

In the above embodiment, a pair of left and right snow melting chamber lids 1 is provided.
5 and 16 are shown, but the snow-melting chamber lid may be one.

[0038]

According to the first aspect of the present invention, an openable and closable snow melting chamber lid for closing the upper opening of the snow melting chamber is provided, and is located below the closed snow melting chamber lid and covers an intermediate portion of the snow melting chamber lid. A fall prevention frame is provided to receive the load.The load applied to the snow melting chamber lid is also supported by the fall prevention frame, and it is not damaged even if the load strength of the snow melting chamber lid is reduced. Can be opened and closed.

According to the invention of claim 2, a burner is provided in the burner chamber, a furnace body is provided in the snow melting chamber, and an upper opening of the snow melting chamber is provided. An openable snow-melting chamber cover that closes the roof is provided, and the fall prevention frame is a furnace body.
The fall prevention frame is a grid that covers almost the entire upper opening of the snow melting chamber when the snow melting chamber lid is opened, and is received by the grid of the fall prevention frame even if the snow melting worker falls down. Because it does not come in contact with a simple furnace, the safety of a snow melting worker can be measured even with a combustion type snow melting machine.

According to the third aspect of the present invention, since the vertical length of the grid of the fall-prevention frame is longer than the horizontal length in a rectangular cross section, the load resistance is increased and the load strength from above is high. The weight of the snow melting room lid can be reduced. In addition, since an edge effect in which local stress is applied to snow is obtained, the introduced snow is easily crushed and finely divided, so that snow can be efficiently melted.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a fall prevention frame of a snow melting machine.

FIG. 2 is a view in which a lid is closed.

FIG. 3 is a plan view of FIG. 1 with a lid removed;

FIG. 4 is a partially enlarged view showing a main part of FIG. 3;

FIG. 5 is an enlarged side view of FIG. 4;

FIG. 6 is an enlarged view as viewed from an arrow A in FIG. 4;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Main body tank 2 Burner room 3 Snow melting room 15 and 16 Snow melting room lid 21 Burner 22 Furnace 25 Sprinkling reflector plate 30 Fall prevention frame 31, 32, 33 Grid

Claims (3)

(57) [Claims] 1. A buried type snow melting machine for throwing snow into a snow melting room to melt snow therein, wherein an openable snow melting room lid for closing an upper opening of the snow melting room is provided, and the snow melting room lid is located below the closed snow melting room lid. the fall prevention frame for receiving the load applied to the intermediate portion of the snow melting chamber cover provided, sprinkled guide the meltwater to snow melting chamber central directions watering reaction
A fall prevention frame is placed on the shooting rod, and the fall prevention frame is a fall prevention frame of a snow melting machine which is a grid that covers almost the entire upper opening of the snow melting room when the snow melting room lid is opened. 2. A buried snow melting machine in which a burner chamber and a snow melting chamber are provided in a main body tank, a burner is provided in the burner chamber, a furnace body is provided in the snow melting chamber, and snow is thrown into the snow melting chamber to melt the snow. of the openable snow melting chamber cover for closing the upper opening is provided, the fall prevention frame provided which is located below the closed snow melting chamber cover, fusion
Sprinkling reflector rod that guides snow water toward the center of the snow melting room and sprays water
Put the fall prevention frame on top of the furnace, and place the fall prevention frame above the furnace body.
The fall-prevention frame is a fall-prevention frame for a snow-melting machine that has a lattice that covers almost the entire upper opening of the snow-melting chamber when the snow-melting chamber lid is opened. 3. The fall prevention frame of a snow melting machine according to claim 1, wherein the vertical length of the grid of the fall prevention frame is a rectangular cross section longer than the horizontal length, and the load resistance is enhanced.