JPH08165614A - Snow-fence and operating method of snow shelter plate thereof - Google Patents

Abstract

PURPOSE: To perform the raising-lowering work of snow shelter plates efficiently. CONSTITUTION: Plural supports 10 are erected at spaces apart along the snow shelter places of a road or the like, and plural snow shelter plates 21 connected in the foldable state are provided in the vertically movable state between the supports 10. Part of ropes 30 are fitted to both ends of the lowest snow shelter plate 21. The upper end of each support 10 is provided with a roller 18 for hanging the rope 30. The ropes 30 are guided by the rollers 18 to raise and lower the snow shelter plates 21 by a truck crane or the like. The other end of the rope 30 is fixed to a bolt previously provided at a snow-fence.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention is generally called a snow fence, and a structure or facility for preventing snowstorms and snowdrifts during a snowfall period, and a snow plate on a snow fence are pulled upward to secure a view in a snowless season. About how to store.

[0002]

[Background Art] Snow fences are mainly installed between wide open areas, rice fields, fields, mountain slopes, etc. and roads or railways adjacent to them, and visibility obstacles due to snowstorms (or snowstorms) occur. , It is used to prevent snow accumulation due to snowdrifts and to secure winter traffic.

A snow fence includes a plurality of vertically-arranged vertical (or inclined) columns along a road or rail, and a plurality of snow-prevention plates provided between the columns. There is.

A plurality of snow-preventing plates are foldably connected to each other and vertically movable between the columns. During the snowfall season, the plurality of snow protection plates are spread vertically and fixed in that state to fulfill the snow protection function described above. During the off-season (no snow season), multiple snow plaques are folded above or below the stanchions in order to eliminate the feeling of pressure when passing, to secure visibility, and not to damage the surrounding scenery. Be done.

In the conventional wind-up type snow fence, a pulley is attached to the top of the column, and a fixing jig driven by a manual winch is attached near the middle of the column. When storing a plurality of snow plates installed in a state of being spread vertically, a manual winch is attached to the fixing jig and the snow plate is rolled up (pulled up) via the pulley at the top of the pillar. I was going.

However, since mechanical elements such as pulleys do not always operate and are exposed to the open air, they often do not function due to rust or the like when the snow plate is raised or lowered, and the load of the manual winch becomes large. There was a problem that work could not be performed efficiently. In addition, since the winch operation must be performed simultaneously at two places on the left and right columns, multiple workers are required (at least three people including the supervisor), and since it is necessary to perform the winch operation in coordination with each other. It was necessary to become familiar with the work.

[0007]

DISCLOSURE OF THE INVENTION The present invention provides a snow fence and a method for operating a snow plate, which can efficiently raise and lower the snow plate.

In the snow fence according to the present invention, a plurality of columns are erected at intervals along a snow prevention site such as a road, and between these columns, a plurality of foldable snow plates are connected to the columns. It is provided so that it can be moved up and down along one side, and one end is fixed to the bottom or top snow protection plate among the plurality of snow protection plates,
A roller for guiding a rope used when pulling the snow protection plate upward or downward is provided at the upper part of the support column.

The present invention can be applied to both a winding type and a lowering type snow fence. In the winding method, multiple snow-prevention plates are folded over and stored in the upper part of the support during the snowless season. In this case, part of the rope is attached to the bottom snow plate. In the unwinding method, a plurality of snow plates are folded and stored under the pillars during a snowless period. In this case, a part of the rope is attached to the top snow plate.

In any case, according to the present invention, one end of the rope is attached to both ends of the snow-prevention plate, the rope is hung on the roller on the upper part of the prop, and the other end of the rope includes a crane vehicle (truck, crane, unic vehicle, etc.). It is possible to pull the snow protection plate up or down by lifting or lowering it with a winder such as).

In the winding method, a plurality of snow plates are pulled up and folded to hold (store) when approaching a snowless season,
When going to the snowfall season, pull down the snow plate and spread it up and down.
In the unwinding method, a plurality of snow plates are lowered and folded to be stored when going to the snowless season, and when going to the snow season, the snow plates are pulled up and spread vertically.

As the roller, it is preferable to use a roller made of resin such as nylon or stainless steel having good weather resistance that does not cause rust even when exposed to rain for a long time.

The wire rope for pulling up and down the snow-prevention plate may be attached to the column in advance, or a dedicated rope may be prepared. If the rope is attached to a pole, the other end of the rope is also preferably fixed to a part of the snow fence.

As described above, according to the present invention, the snow protection plate can be efficiently operated at the start and end of the snowfall season. In addition, the number of workers can be reduced and less skill is required for work.

The present invention also provides a method of operating a snow plate in a snow fence.

According to this operation method, a rope guide roller is rotatably provided in advance on the upper part of the support column, and one end of the rope is attached to both ends of the bottom or top snow protection plate of the plurality of snow protection plates. Is attached to the roller, and the other end of the rope is hoisted or hoisted using a hoisting machine to hoist or hoist the plurality of snow protection plates.

The above-mentioned effects can be achieved by this operating method as well.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a perspective view showing a roll-up type snow rack, in which a snow plate at the center is pulled up and folded.

A pillar 10 is erected on a concrete foundation 11 and firmly fixed to the ground. A plurality of pillars 10 are erected at appropriate intervals along the road or railway over the area where snow is to be prevented. A horizontal beam 20 is firmly fixed to the upper end of the column 10.

FIG. 2 shows an upper part of the pillar 10 and a part of the snowproof plate supported thereby, and FIG. 3 shows an enlarged part of the lower part of the pillar 10 and a snowproof plate supported thereby. FIGS. 4 and 5 show all of the columns and the snow-prevention plate attached to the columns. FIG. 4 shows the state during the snowfall period, and FIG. 5 shows the state during the snowless period.

In this embodiment, four snow plates 21 are provided. These snow plates 21 include aggregates (pipes) 22 passing through the center and link members 23 attached to both ends thereof. In the snow protection plates 21 arranged vertically, the lower ends of the link members 23 of the first and second snow protection plates 21 from the top are link members.
By 24, it is pivotally attached to the upper ends of the link members 23 of the third and fourth snow plates 21 from the top, and the upper ends of the link members 23 of the second snow plate 21 from the top of the first snow plate 21 from the top. By linking the lower end of the link member 23 of the third snow protection plate 21 from the top to the center of the link member 23 of the lowermost snow protection plate 21 by a short link member, respectively, They are connected to each other so that they can be folded in any direction.

Rotating shafts 25 are inserted into both ends of the aggregate 22 of each snow protection plate 21. The rotating shaft 25 may be integrated with the aggregate 22. One disk 25 is attached to the rotary shaft 25 of the upper three snow plates 21.
A is fixed, and two discs 25B are fixed to the rotary shaft 25 of the lowermost snow protection plate 21 with a small gap.

The column 10 is made of H steel, and is composed of a central web and two flanges orthogonal to each other on both sides thereof.
The discs 25A and 25B are slightly loosely inserted between the two flanges of the column 10 so as to be vertically movable. As a result, the snow protection plate 21 is guided by the columns 10 on both sides thereof and is vertically movable.

Five kinds of holes 13, 14, 15, 16, 17 for passing bolts are formed in both flanges of the column 10.

Two uppermost holes 13 are formed vertically, and bolts 13A and 13B are passed through these holes 13 and fixed with nuts. These bolts 13A and 13B sandwich the rotary shaft 25 of the uppermost snow plate 21 from above and below to fix the position of the snow plate 21.

The holes 14 are bolts 15A that are pulled up and folded in the snowless season to hold the four snow plates 21 in the folded state (see FIG. 5).

Two holes 15 are formed at the top and bottom, and these holes 15
Bolts 15A and 15B are passed through and fixed with nuts. These bolts 15A and 15B pinch the rotary shaft 25 of the bottom snow protection plate 21 of the four snow protection plates 21 that have been lowered and spread during the snowfall, and fix the position of this snow protection plate 21. To do.

In the snowfall season, the top snow cover 21 and the bottom snow cover 21 are bolts 13A, 13B, 15A, respectively.
Since it is fixed by 15B, the four snow protection plates 21 are held in an unfolded state.

Bolts 16A and 17A for fixing by hooking a hook 31 attached to the tip of the rope 30 are attached to the holes 16 and 17, respectively.

A roller 18 is rotatably mounted between the flanges near the upper end of the column 10. The roller 18 is preferably made of a resin such as nylon or the like which has good corrosion resistance and does not generate rust even after being exposed to the field for a long period of time, or stainless steel. In the two discs 25B of the rotary shaft 25 of the snow cover 21 at the bottom, one end of the rope 30 is fixed (hanging) to the rotary shaft 25 (may be hooked).
It extends upward along the pillar 10. In the snowy season, the rope 30 is folded back by the roller 18 and extends downward as shown in FIG. 4, and the hook 31 provided at the other end of the rope 30 has a hole.
It is hung on a fixing bolt 16A fixed to 16. As a result, the rope 30 does not get in the way even when the snow plate 21 is not being raised or lowered.

In the snow-free period, four snow plates as shown in FIG.
21 is pulled up and stored in a folded state. The fourth snow protection plate from the top in the snowfall season (Fig. 4)
The bolt 15A that has prevented the upward movement of 21 is removed, and this bolt 15A is passed through the hole 14 and fixed. As a result, all the snow protection plates 21 are prevented from falling, and the snow protection plates 21 are held in a folded state.

The rope 30 folded back by the roller 18 is a bolt
The hook 31 is hooked on the fixing bolt 17A fixed in the hole 17 by further folding back at 16A and moving upward. The hole 17 is formed in advance at a height position such that the length of the rope 30 remaining when the snow protection plate 21 is pulled up can be absorbed.
Instead of the bolt 17A, the bolt 15B may be passed through the hole 17. The hole 17 may be formed at a position below the hole 16.

The operation of pulling up the snow protection plate 21 when the snowfall season ends and the snowless season begins will be described with reference to FIG. This work is performed using a hoist such as a crane truck. First, the worker removes the hooks 31 of the two ropes 30 hung on the fixing bolts 16A provided on the left and right columns 10, and hooks them on the hooks 32 of the crane prepared above the snow fence. The rope 30 is guided by the roller 18.

Next, the upper stop bolt 15A fixing the bottom snow protection plate 21 is removed. 3 excluding the top one
When the two snow plates 21 can move up and down, the rope 30
With a crane. The second and third snow plates from the top, in which the bottom snow plate 21 is pulled up by the rope 30 and connected to each other by the link member 24
21 will also be raised. Since the rope 30 is supported by the roller 18, it moves smoothly.

Below the topmost snow plate 21, there are three snow plates.
21 are almost horizontal to the ground and lined up with a narrow space.
The previously removed bolt 15A is passed through the hole 14 formed in the column 10 in advance and fixed. The bottom snow plate 21 is supported by the bolt 15A, and the three snow plates 21 are folded.
Is prevented from falling. Hook 31 fixed with fixing bolt 17A (or 15B) in hole 17 and removed from hook 32 of crane
Is hooked on this bolt 17A (or 15B). This completes the work of winding the snow protection plate 21.

At the beginning of the snowfall season, the work of pulling up, spreading and fixing the snow protection plate 21 is carried out in the reverse order.

FIG. 7 shows another embodiment of the present invention.

In this embodiment, the hook 31 provided on the tip of the rope 30 is hooked on each of the two hooks 26 provided on the beam 20 during the snow season. The beam 20 is provided with another pair of hooks 27 for hooking the hooks 31 at the ends of the ropes 30 in the snowless season.

The rope 30 may be directly fixed to the column 10 by U bolts. Further, instead of providing the hook 31, the other end of the rope may be a sling knot.

The rope does not have to be permanently installed as in the above embodiment. In this case, a dedicated rope is attached to the lowermost snow plate and hung on the roller 18 each time the snow plate is pulled up or down.

[Brief description of drawings]

FIG. 1 is a perspective view showing a snow protection shelf, showing a state in which a part of the snow protection plates is pulled up.

FIG. 2 is an enlarged perspective view showing an upper part of a column and a part of a snow protection plate.

FIG. 3 is an enlarged perspective view showing a lower portion of a column and a part of a snow protection plate.

FIG. 4 is an enlarged front view showing a state (snowfall period) in which a snow plate is lowered.

FIG. 5 is an enlarged front view showing a state (snowless period) in which the snow plate is pulled up.

FIG. 6 is a perspective view showing a work of pulling up the snow protection plate.

FIG. 7 is a perspective view showing another embodiment of the present invention.

[Explanation of symbols]

 10 Posts 13, 14, 15, 16, 17 Holes 13A, 13B, 15A, 15B, 16A, 17A Fixing bolt 18 Roller 21 Snow protection plate 23, 24 Link member 30 Rope 31 Hook

Claims (4)

[Claims] 1. A plurality of stanchions are erected at intervals along a snow protection site such as a road, and between these stanchions, a plurality of snow protection plates foldably connected are vertically movable along the stanchions. A roller for guiding a rope used at the time of pulling the snow plate up or down, one end of which is fixed to the bottom or top snow plate of the plurality of snow plates. Is a snow fence provided at the top of the pillar. 2. A fixture for fixing the snow-preventing plate in a state where the plurality of snow-preventing plates are spread vertically so as to fulfill the snow-preventing function, and the plurality of snow-preventing plates folded upward and folded. The snow fence as claimed in claim 1, further comprising a holder that holds the folded state. 3. A rope having one end fixed to the lowermost or uppermost snow-preventing plate, and a fixture for fixing the other end of the rope.
Or the snow fence as described in 2. 4. A plurality of stanchions are erected at intervals along a snow protection site such as a road, and between these stanchions, a plurality of snow protection plates foldably connected are vertically movable along the stanchions. In the protection fence provided in the above, a rope guide roller is rotatably provided in advance on the upper part of the pillar,
One end of the rope is attached to both ends of the bottom or top snow protection plate of the plurality of snow protection plates, the rope is hung on the roller, and the other end of the rope is lifted using a lifting machine. Alternatively, a method of operating the snow-prevention plate on the protection fence by pulling up or down the plurality of snow-prevention plates by suspending them.