JPH0455059Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention allows multiple wind and snow break boards to be folded upwards when they are not needed and to be deployed downward when needed in snowy regions. This invention relates to an upwardly foldable wind and snow fence.

[Prior art] Conventionally, upwardly foldable wind and snow fences installed along the sides of expressways in snowy regions have been constructed by extending in the left and right direction, as disclosed in Japanese Utility Model Application Publication No. 173715/1983. A large number of wind and snow break boards are arranged at intervals in the vertical direction, and board end links extending in the width direction of the wind and snow break board are fixed to the ends of each wind and snow break board, and the board end links of the wind and snow break board in the middle are fixed to the ends of each wind and snow break board. The material and the interlocking long link material are crossed in an X shape and pivoted by a support shaft, and one end of the interlocking short link material is attached to the center of the plate end link material of the upper wind and snow board and the lower wind and snow board. is pivoted by a support shaft, the ends of vertically adjacent plate end links and the ends of interlocking long links or interlocking short links are pivotally connected, and the guide rollers attached to each support shaft are A structure is known in which one end of a lifting wire rope is fitted into a guide groove of a support column and is wound around a pulley attached to the upper end of the support column, and is connected to a lower guide roller.

[Problem that the invention attempts to solve]

However, in the case of the above-mentioned conventional upward folding type wind and snow fence, when the wind and snow boards are raised and folded, the end links, interlocking long links, and interlocking short links of all the wind and snow boards are removed at the same time. Since they are connected to rotate, the number of pivot points increases, resulting in high processing costs.Moreover, when folding the windbreak board group upwards, all windbreak boards except the upper windbreak board must be Since the snow plates are pulled up at the same time and all the windbreak snow plates are rotated at the same time, a large lifting force is required from the beginning to the end of the upward folding process, and furthermore, the manufacturing error of the folding mechanism consisting of each link material is relatively large. In this case, each link member cannot be smoothly folded and rotated, and therefore a considerable pulling force must be applied to the lifting wire rope, making it difficult to fold upward. In addition, since the connecting link material pivotally attached to the center of the end link material of the intermediate wind and snow protection board is a long link, there is a problem that the amount of material used is large, which is uneconomical.

[Purpose of the invention, structure]

The purpose of this invention is to provide an upper wind and snow break fence that can advantageously solve the above-mentioned problems.
, an intermediate wind and snow protection board 2 and a lower wind and snow protection board 3 are arranged at intervals in the vertical direction, and an end frame member 4 extending in the width direction of the wind and snow protection board is fixed to the end of each wind and snow protection board,
The widthwise central portion of the end of the upper wind and snow break plate 1 is rotatably attached to the upper part of the support column 5 by a support shaft 6,
A guide roller 9 that is fitted into a guide groove 8 of the support column 5 is fitted to a support shaft 7 attached to the widthwise center of the end of the intermediate wind and snow break board 2, and the width of the end of the lower wind and snow break board 3 is The support shaft 10 attached to the central part of the direction has a
Lifting guide member 11 fitted into the guide groove 8
is provided, and only at one end in the same direction of the end frame material 4 of the upper wind and snow break board 1 and the middle wind and snow break board 2,
One end of the interlocking link 12 is pivotally connected, and the other end of the interlocking link 12 is rotatably fitted to the support shaft of the lower wind and snow break plate, and the lifting guide member 11 is provided with a flexible lifting member. The upper foldable wind and snow fence is characterized in that strips 13 are connected.

〔Example〕

Next, this invention will be explained in detail using illustrated examples.

The drawing shows an embodiment of this invention, in which upper wind and snow break plates 1 extending in the left and right directions are shown.
A plurality of intermediate wind and snow break boards 2 and a plurality of lower wind and snow break boards 3 are arranged in parallel at intervals in the vertical direction, and in the widthwise center of each wind and snow break board 1, 2, 3, the entire length of the wind and snow break board is arranged. A groove with a semicircular cross section extending over the area is provided, and in the groove in the wind and snow break plates 1, 2, and 3, a support shaft 6, which also serves as a reinforcement for the wind and snow break plate made of steel pipe, is provided.
7 and 10 are fitted, and the ends of each of the support shafts 6, 7, and 10 protrude from the ends of the wind and snow break boards, and furthermore, wind break A steel intermediate frame member 15 extending in the width direction of the snow plate and a steel end frame member 4 are superposed, and the center portion of each frame member 4, 15 and the widthwise center portion of the windbreak snow plate are interposed between them. The frame members 4 and 15 are connected to the supporting shafts by bolts 17, and the overlapping portions of the frame members 4 and 15 and the wind and snow break plates are connected by bolts 18.

At one end (low level side end) of each end frame member 4,
A pivot shaft 19 extending in the longitudinal direction of the wind and snow protection board is fixed by welding, and one end of the interlocking link 12 is rotatable on the pivot shaft 19 of the end frame member 4 of the upper wind and snow protection board 1 and the intermediate wind and snow protection board 2. The shaft 19 of the end frame member 4 of the lower wind and snow break board 3 is fitted into the
One side of an L-shaped lower locking fitting 20 is rotatably attached to the holder.

The cylindrical body 21 provided at the other end of the interlocking link 12 is rotatably fitted to the end of a support shaft fixed to the lower wind and snow protection board, and is connected to the support shaft of the intermediate wind and snow protection board 2. A guide roller 9 having an annular groove on the outer periphery is rotatably fitted into the end of the support 7, and the guide roller 9 is fitted into a guide groove 8 in the support 5 made of H-beam steel, and the support 5 The lower end and the lower end of the column stiffening frame 22 are fixed to a seat plate 23 by welding, and the seat plate 23 is placed on a concrete foundation 24 and fixed with anchor bolts 25.

An annular upper support member 26 having an annular groove on the outer periphery is rotatably fitted to the end of the support shaft 6 of the upper wind and snow break board 1, and the upper support member 26 is fitted into the guide groove 8 of the support column 5. The upper bolt 27 and the lower bolt 28 are inserted into the column 5 at a position where the upper support member 26 is inserted and the upper and lower parts of the upper support member 26 are sandwiched between them.
The upper support member 2
6 is held at a predetermined level.

At the end of the support shaft 10 of the lower wind and snow break board 3, there is a lifting guide member 11 made of a torus having an annular groove on its outer periphery.
are rotatably fitted, and the elevating guide member 11
A pulley 30 is attached to a pulley support fitting 29 that is fitted into the guide groove 8 and fixed to the upper end of the support column 5, and a flexible elevating strip made of a wire rope is wound around the pulley 30. One hanging portion 31 in 13 is a guide groove 8 in support column 5.
A ring portion at the lower end of the hanging portion 31 is fitted into the elevating guide member 11 .

The other hanging portion 3 of the flexible strip 13
2 extends along the outside of the pillar 5 and extends along the outside of the pillar 5.
A ring part 34 is provided at the end of the hanging part 32, and consists of an upper wind and snow break board 1, an intermediate wind and snow break board 2, and a lower wind and snow break board 3. When the snow board group is lowered and deployed, the ring portion 34 is placed in a position close to the lower part of the support fitting 33. A locking metal fitting 35 is fixed to the support post 5 below the supporting metal fitting 33, and when the wind and snow break board group is folded upward, the ring part 3
4 is locked by the locking fitting 35, and the hanging portion 3
2. Runout is prevented.

A stopper 36 is fixed to the interlocking link 12 by welding, and when the wind and snow breakers 1, 2, and 3 are lowered and deployed until the wind and snow breakers 1, 2, and 3 reach a predetermined inclination angle, the stopper 36 touches the outer surface of the support column 5. The descending expansion is stopped when it hits . When the downward deployment is completed, the lower end locking metal fitting 20 attached to the end frame member 4 of the lower wind and snow break plate 3 is fixed to the column 5 with bolts 37, and the bolt 37 and the lower locking metal fitting 20 lock the windbreak. The snow plate group is fixed in the expanded state. Further, a connecting beam 38 is constructed across the upper ends of adjacent columns 5 and fixed with bolts 39.

When the wind and snow break board group is folded upward after the winter season, the bolts 37 are removed to uncouple the lower end locking fitting 20 and the column 5, and a manual or power-operated winding device 40 is installed at the bottom of the column 5. Fixed in a removable manner,
The hook 42 at the end of the rope 41 let out from the winding device 40 is engaged with the ring portion 34 at the end of the flexible elevating strip 13, and the winding device 40 is operated in the winding direction. Then, the elevating guide member 11, the support shaft 10, etc. of the lower wind and snow shield 3 are raised by the flexible strip 13.

In this way, one end of the lower intermediate wind and snow break plate 2 in the width direction is pushed up by the support shaft 10 via the interlocking link 12, so that the intermediate wind and snow break plate 2 changes from a steeply inclined state to a gently inclined state. (nearly horizontal state), and then when the lifting guide member 11 of the lower wind and snow break board 3 hits the guide roller 9 of the lower intermediate wind and snow break board 2, the lifting guide member 1
1, the guide roller 9 is moved upward, and one end of the upper intermediate wind and snow shield 2 in the width direction is pushed up by the support shaft 7 of the lower intermediate wind and snow shield 2 via the interlocking link 12. The intermediate wind and snow break plate 2 is rotated from a steeply inclined state to a gently inclined state.

After the guide roller 9 of the lower intermediate wind and snow protection board 2 hits the guide roller 9 of the upper intermediate wind and snow protection board 2, the lower wind and snow protection board 3 and the lower and upper intermediate wind and snow protection boards 2 are moved together. The interlocking link 1 is moved upward and is connected to the upper intermediate wind and snow break plate 2 by the support shaft 7.
2, one end of the upper wind and snow break board 1 in the width direction is pushed up, so the upper wind and snow break board 1 is rotated from a steeply inclined state to a gently inclined state.

After folding the wind and snow break board group upward in this way, the support bolt 43 is inserted into the support column 5 at a position close to the lower part of the elevation guide member 11,
After supporting the lifting guide member 11 with the support bolt 43, the ring portion 34 at the end of the flexible strip 13
Then, the hook 42 of the rope 41 of the winding device 40 is removed, and the winding device 40 is removed, and the ring portion 34 is locked to the locking fitting 35 of the support column 5.

Each of the end frame members 4 and each interlocking link 12 can be rotated independently, and the inclination angle of each wind and snow board when the wind and snow board group is unfolded is fixed to the interlocking link 12. stopper 36
This is the angle when it hits the outer surface of the support column 5. Therefore, by changing the protruding length of the stopper 36 from the interlocking link 12, or even if the stopper 36 has the same protruding length, by changing the stopper mounting position in the longitudinal direction of the interlocking link 12, wind protection can be improved. The inclination angle of each windbreak snow board when the snow board group is unfolded can be set arbitrarily.

When this invention is implemented, a steel plate having reinforcing ridges is used as each of the wind and snow break plates. Further, the number of intermediate wind and snow break plates used may be one or three or more.

As the lifting guide member 11, a sliding shoe may be used instead of using a toric body having an annular groove, and as the upper support member 26, a sliding shoe may be used instead of using a toric body having an annular groove. Blocks may also be used. Furthermore, upper wind and snowboard board 1
As the mounting structure for rotatably attaching the widthwise center portion of the end portion to the upper part of the support column 5, any structure other than that shown in the drawings may be adopted.

[Effect of the invention] According to this invention, the group of wind and snow breakers consisting of the upper wind and snow break board 1, the intermediate wind and snow break board 2, and the lower wind and snow break board 3 is moved upward by pulling the flexible elevating strip 13. When folding, the lower wind and snow break board 3 is first pulled up, and the intermediate wind and snow break board 2 is rotated from a steeply inclined state to a gently inclined state by the support shaft 10 of the lower wind and snow break board 3 via the interlocking link 12. Next, the lower wind and snow protection board 3 and the intermediate wind and snow protection board 2 are moved upward, and the upper wind and snow protection board is changed from a steep slope state to a gentle slope state via the interlocking link 12 by the support shaft 7 of the intermediate wind and snow protection board 2. In this way, the raising of the lower wind and snow breakers and the rotation of the upper wind and snow breakers are repeated in sequence, so even if there is a relatively large manufacturing error in the folding mechanism, the folding mechanism can be folded and rotated smoothly,
Therefore, the wind and snow break board group can be folded upward by applying a relatively small traction force, and since the number of pivot points is small, manufacturing is easy and processing costs are low.Moreover, the interlocking link 12
Since short links can be used, the amount of material used is small and economical, and the pulling force required when folding the wind and snow break board group upwards is initially calculated by the pulling force of the lower wind and snow break board 3 and Only the rotating force of the upper intermediate wind and snow break board is used, and each wind and snow break board is subsequently pulled up and rotated in sequence, so the maximum lifting force is required only a little before the upward folding is completed. Therefore, compared to the conventional upward folding type wind and snow fence, in which all the wind and snow boards except the upper wind and snow board are simultaneously pulled up and rotated at the same time from start to finish, the upward folding process is faster. Since only a small pulling force is required for most of the inside, advantages such as being able to easily perform an upward folding operation can be obtained.

[Brief explanation of the drawing]

The drawings show one embodiment of this invention, in which Figure 1 is a partially longitudinal side view showing the wind and snow fence when the wind and snow board group is expanded, Figure 2 is its front view,
Fig. 3 is a partially cutaway enlarged side view showing the wind and snow break plate group in the unfolded state, Fig. 4 is its front view, Fig. 5 is a cross-sectional plan view showing the vicinity of the guide roller and interlocking link attachment part, and Fig. Figure 6 is a partially cutaway front view of the wind and snow break board with the spindle and frame attached, Figure 7 is a sectional view taken along line A-A in Figure 6, and Figure 8 is when the wind and snow board group is folded upward. FIG. In the figure, 1 is an upper wind and snow board, 2 is an intermediate wind and snow board, 3 is a lower wind and snow board, 4 is an end frame member, 5 is a column, 6 and 7 are support shafts, 8 is a guide groove, and 9 is a guide roller, 10 is a support shaft, 11 is a lifting guide member,
12 is a link for interlocking, 13 is a flexible strip for lifting and lowering,
17 and 18 are bolts, 19 is a pivot, 20 is a lower end locking fitting, 21 is a cylinder, 23 is a seat plate, 24 is a concrete foundation, 25 is an anchor bolt, 26 is an upper support member, 27 is an upper bolt, 28 is The lower bolt, 30 is a pulley, 35 is a locking metal fitting, 36 is a stopper, 40 is a winding device, and 43 is a support bolt.

Claims (1)

[Scope of utility model registration request] Upper wind and snow protection boards 1, intermediate wind and snow protection boards 2, and lower wind and snow protection boards 3, each extending in the left and right direction, are arranged at intervals in the vertical direction, and extend in the width direction of the wind and snow protection boards at the ends of each wind and snow protection board. The end frame member 4 is fixed, and the widthwise central part of the end of the upper wind and snow break board 1 is rotatably attached to the upper part of the support column 5 by a support shaft 6. A guide roller 9 that is fitted into the guide groove 8 of the support column 5 is fitted into the support shaft 7 attached to the widthwise center part, and a guide roller 9 fitted to the widthwise center part of the end of the lower wind and snow break plate 3 is fitted to the support shaft 7 attached to the widthwise center part. 10 is provided with an elevating guide member 11 that is fitted into the guide groove 8, and is connected to the upper wind and snow break board 1 and the middle wind and snow break board 2.
One end of the interlocking link 12 is pivotally connected only to one end in the same direction of the end frame member 4, and the other end of the interlocking link 12 is rotatable around the support shaft of the lower wind and snow break board. An upwardly foldable wind and snow fence characterized in that a flexible strip 13 for lifting and lowering is fitted and connected to the lifting guide member 11.