JP3590038B2 - Windproof fence - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a windbreak fence for preventing dust from being scattered from, for example, slops.
[0002]
[Prior art]
For example, in ironworks, coal is mined from coal mines, and the remaining soil and stones are piled up to form a mountain of waste. Mt. Bota is exposed to the wind, and when the wind blows, dust such as sand scatters from the wind, and it is feared that the environment to neighboring residential areas will be damaged. For this reason, steelworks have built windbreak fences as a means of preventing the scattering of such dust to prevent wind from hitting Mt. The windbreak fence has a height of, for example, about 20 to 30 m, and is stretched over 1 km so as to surround the steelworks so as to block wind blowing to Mt.
[0003]
[Problems to be solved by the invention]
However, when a strong wind such as a typhoon blows, a large-area windbreak fence also increases the wind load.To prevent damage, strengthen the foundation or main structure or reduce the wind load during strong winds. It was necessary to make the structure to avoid the wind so as to make it smaller. When the foundation and the main structure are strengthened, the windbreak fence has to be constructed over a long distance, so that it becomes expensive in terms of cost.
[0004]
In addition, as a structure for preventing the strong wind of the windbreak fence, it can be dealt with by providing several levels of panels up and down and raising and lowering the panels. Various proposals have heretofore been made for a windbreak fence having such a structure, for example, as a windbreak fence for a highway. However, they are not as tall as the windbreak fences targeted by the present invention, and they do not stretch over wide sections. It was not a technology that could be adopted in terms of cost, such as using many drive motors.
[0005]
Therefore, an object of the present invention is to provide a large-sized windbreak fence that extends over a wide area at low cost.
[0006]
[Means for Solving the Problems]
The windproof fence of the present invention comprises a unit in which a plurality of rows of panels are provided up and down so as to be lifted up and down by the top panel, and a movable pulley attached to the top panel, One wire rope is wound over a fixed pulley attached to the structural body on which the panel is arranged, and the wire rope having one end fixed is wound back and fed by one motor. It is characterized by.
[0007]
Therefore, according to the present invention, the cost can be reduced in that the weight of the structure main body can be greatly reduced by lowering the panel to avoid wind resistance due to strong wind, and furthermore, a plurality of rows of panels can be reduced to one panel. The cost can also be reduced in that it has a simple structure in which the wire rope is used to move up and down by one motor 5.
[0008]
Further, the windproof fence of the present invention is characterized in that one end of the wire rope is connected to a tension detecting device, and the drive of the motor is stopped in response to the detection signal.
Therefore, according to the present invention, it is possible to prevent breakage of various parts which may be caused by excessive rewinding of the wire rope and dropping of the wire rope from the pulley due to excessive winding.
[0009]
Further, the windproof fence of the present invention is characterized in that the panel is formed by passing a wire rope through a net and connecting the wire rope to a frame to stretch the net.
Therefore, according to the present invention, if a mesh-type net is used, the wind that scatters dust can be blocked, and the weight can be reduced while ensuring strength with a wire rope. And since it is a lightweight panel, the weight of a structural main body can be suppressed significantly and cost can be reduced.
[0010]
Further, the windproof fence of the present invention is characterized in that the wire rope is connected to the frame so as to come off with a predetermined tensile load.
Therefore, according to the present invention, even if a strong wind is blown in a state where the panel is lifted and spread, it is possible to prevent the wire main body from coming off, thereby preventing the structural body from being damaged due to resistance. Can be. Also in this respect, the weight of the structure main body can be greatly reduced, and the cost can be reduced.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of a windbreak fence according to the present invention will be described below with reference to the drawings. FIG. 1 is a diagram schematically showing a driving portion of a windbreak fence. As shown in the drawing, the windproof fence 1 of the present embodiment is configured such that three rows of upper and lower panels 2, 3, and 4 are provided in five rows to form one unit, and the units are arranged in a number corresponding to a required distance. Each of the panels 2, 3, and 4 has a size of, for example, about 10 m in length and about 18 m in width. When all three panels are spread over five rows in width, one unit is about 30 m in length and about 90 m in width. The area can block the wind.
[0012]
The upper, lower three-stage panels 2, 3, and 4 have the lowermost panel 4 fixed (hereinafter, this is referred to as "fixed panel 4"). (Hereinafter referred to as “elevating panels 2 and 3”). The elevating panels 2 and 3 are slidably attached to a structural body to be described later. When the uppermost elevating panel 2 moves up, the second-stage elevating panel 3 is hooked by the second elevating panel 2 and moves up. ing.
[0013]
The windbreak fence 1 uses one motor 5 as an opening / closing device, and rewinds or winds one wire rope 6 to raise and lower the elevating panels 2 and 3 of the entire unit. For this purpose, two moving pulleys 7, 7 are respectively attached to the elevating panel 2, and fixed pulleys 8, 8,... Are also attached to the structure main body, and the wire rope 6 is hung through these moving pulleys 7,. Has been passed. The tip of the wire rope 6 is fixed to the tension detecting device 9 on the side opposite to the motor 5, and the windbreak fence 1 is opened and closed by adjusting the length of the wire rope 6 between the fixing point and the motor 5. It has become.
[0014]
In this manner, the windproof fence 1 configured by arranging the upper and lower three panels 2, 3, 4 horizontally in five rows has the panels 2, 3, 4 provided on the structural body. Here, FIG. 2 is a front view showing the windbreak fence 1, FIG. 3 is a right side view thereof, and FIG. 4 is a sectional view taken along line AA of FIG.
[0015]
The structural body 10 is assembled for each unit, and has a framed structure composed of columns and beams so as to separate the space for each panel when the panels 2, 3, and 4 are expanded. Therefore, as shown in the front view of FIG. 2 (only one row is shown), three frames are largely divided vertically, and five rows are formed in the horizontal direction. Specifically, as shown in FIG. 3, the pillars 11, 11 arranged in front and back are erected on a foundation 16 in which a steel pipe pile 15 is driven into the ground, and the front and rear beams 12, 12, 12 are connected thereto. Cross beams 13, 13, 13 as shown in FIG. 2 are connected to the supports 11, 11, respectively.
[0016]
The fixed panel 4 is provided at the front of the structural body 10, and the elevating panel 3 and the elevating panel 2 are attached to the rear of the structural body 10 so as to be able to move up and down. Although not specifically shown, the panels 2, 3, and 4 are each provided with a fine mesh net. The panel 4 is directly fixed to the structural body 10, while the lifting panels 2, 3 have two guide rails 17, 18 on the front and rear beams 12, 12, 12 as shown in FIGS. 3 and 4. The guide rails 17 and 18 are attached to the guide rails 17 and 18 so as to be slidable at both ends.
[0017]
Panels 2, 3, and 4 using the net are formed so that the wire is passed through the wire rope because only the attachment point is easily broken by simply applying the net, and the entire net is supported by the wire rope. ing. Therefore, the wire is passed through the wire ropes 21 and 21 at the upper and lower ends and vertically through a plurality of wire ropes 22 and 22. , 22. The vertical wire ropes 22 are connected with a length having some bending as shown in the figure.
[0018]
As shown in FIG. 6, bags 31 are sewn vertically and horizontally on the net 30, and wire ropes 21 and 22 are passed through the bags 31. A single lock 25 is attached to the tip of each of the wire ropes 21 and 22, and is connected to a frame 23 forming the panels 2, 3, and 4 via a shackle 26. The connection of the wire ropes 21 and 22 in this manner is such that the wind rope fences 1 and 22, that is, the net 30 themselves come off first and lose the wind resistance before the windbreak fence 1 itself is damaged by the strong wind or the net is broken. To do that.
[0019]
The frame 23 on which the net 30 is stretched is a square frame formed using a square pipe and having a size of the above-described panel, that is, a size of 10 m in length and 18 m in width, and as shown in FIG. Three reinforcing members 24 are vertically inserted so as to be able to withstand the resistance due to the received wind. The pulleys 7, 7 are attached to the frame 23 of the elevating panel 2, and the wire rope 6 is sent vertically between the pulleys 7, 8, ... fixed to the structural body 10. . Furthermore, hooks 2a, 3a projecting forward or rearward are formed on the upper and lower ends of the frame 23 on the lifting panels 2, 3 respectively (see FIG. 4), whereby the lifting panel 3 is taken along with the lifting panel 2. It is going to rise.
[0020]
Next, the opening and closing operation of the windproof fence 1 will be described with reference to FIG. The windbreak fence 1 is opened when the elevating panels 2 and 3 descend as shown in the two columns on the left side of the drawing, and when the panels 2, 3 and 4 of one unit are all overlaid, the motor 5 is driven from there. When the wire rope 6 is pulled and the elevating panels 2 and 3 are lifted, the rewinding operation is performed, so that the wire rope 6 is closed.
That is, when changing from the open state to the closed state, the wire rope 6 is pulled up between the fixed pulley 8 and the moving pulley 7, and the lifting plate 2 with the moving pulley 7 is first lifted. Then, the elevating plate 2 is raised by the height of one plate, and the next elevating plate 3 is hooked whereupon the two elevating plates 2 and 3 are pulled up by the wire rope 6.
[0021]
When the wire rope 6 is wound up by the drive of the motor 5, the lifting plates 2, 3 in each row are pulled up as shown in the figure, and finally, all the panels 2, 3, 4 of one unit are moved up and down. Can be spread in three steps. The closing operation of the windbreak fence 1 ends when the wire rope 6 between the fixed point and the wire rope 6 is sufficiently wound up by the motor 5. Then, in this state, if the rotation of the motor 5 is stopped by stopping the current supply to the motor 5, the brake is effective, and the idling of the motor 5 is prevented against the tension acting on the wire rope 6. Therefore, the lifting plates 2 and 3 for one unit can be continuously suspended without the wire rope 6 being loosened.
[0022]
On the other hand, when opening the windbreak fence 1 by lowering the elevating plates 2 and 3, the motor 5 is rotated in reverse to feed out the wire rope 6. When the wire rope 6 is sent out, the lifting plates 2 and 3 suspended on the wire rope 6 descend by their own weight. At this time, the motor 5 serves as a brake so that the motor 5 does not fall off at once. Then, the motor 5 stops when all the lifting plates 2 and 3 have been lowered.
[0023]
In this way, the windbreak fence 1 is opened and closed by raising and lowering the lifting plates 2 and 3, and the motor 5 is stopped in a state where the lifting plates 2 and 3 are fully raised or a state where the lifting plates 2 and 3 are fully lowered. . The timing is when the tensile load of the wire rope 6 is confirmed by the tension detecting device 9 and the tensile load exceeds or falls below a predetermined value. That is, in the tension detecting device 9 to which the tip of the wire rope 6 is connected, a tensile load acting on the wire rope 6 is applied.
[0024]
When the windbreak fence 1 is closed, if the elevating plates 2 and 3 are completely raised, it is impossible to further wind the wire rope 6. In this state, if the motor 5 attempts to further wind the wire rope 6, the tensile load acting on the wire rope 6 increases. Therefore, the tension detector 9 detects this, and upon receiving the detection signal, the motor 5 stops. The lifting of the lifting plates 2 and 3 is completed.
On the other hand, when the windbreak fence 1 is opened, the wire rope 6 is released from the suspended state when all the elevating plates 2 and 3 have descended, and no tensile load is applied. Therefore, when opening the windbreak fence 1, the tension detecting device 9 detects that the tensile load acting on the wire rope 6 has fallen below a certain value, and upon receiving the detection signal, the motor 5 stops and the elevating plates 2, 3 Complete the descent.
[0025]
Therefore, according to the windbreak fence 1 of the present embodiment, the panels 2 and 3 are normally pulled up to be in the closed state, and a wall having a height of 30 m is formed to surround the sloping mountain and block the wind. Therefore, it is possible to prevent the dust from being scattered from the waste mountain due to the wind.
By the way, when a strong wind such as a typhoon blows, in most cases, not only the wind but also the rain or the like and the sand which causes dust becomes wet and heavy, and does not fly even when receiving the strong rain wind. On the other hand, if the panels 2 and 3 are pulled up and closed, the windbreak fence 1 may be damaged by strong wind resistance.
[0026]
Therefore, in the case of a typhoon in which the wind power exceeds a certain value, the windbreak fence 1 can be opened by lowering the panels 2 and 3 to avoid wind resistance and avoid breakage. Therefore, the windbreak fence 1 can be designed as a structure in which the weight of the foundation 16 or the structural body 10 in which the steel pipe pile 15 is driven into the ground is greatly reduced, and the cost can be reduced. Further, in this embodiment, in particular, the lifting panels 2 and 3 in a plurality of rows are moved up and down by one motor 5 using one wire rope 6, so that the structure is simple and used in other fields. It is possible to reduce costs significantly compared to a windbreak fence that uses multiple motors.
[0027]
The embodiment of the windbreak fence has been described above, but the present invention is not limited to this, and various changes can be made without departing from the gist of the invention.
For example, in the above-described embodiment, the panels 2, 3, and 4 are formed by stretching the net, but the present invention is not limited to the net and may be a plate-like body.
[0028]
【The invention's effect】
The present invention provides a unit in which a plurality of rows of upper and lower panels are provided in a plurality of rows so as to move up and down by raising and lowering the uppermost panel, and a moving pulley attached to the uppermost panel and the plurality of panels are provided. One wire rope is laid over the fixed pulley attached to the arranged structural body, and the wire rope fixed at one end is rewound and fed by one motor, so that it is stretched over a wide area. It became possible to provide a large windbreak fence to go around at low cost.
[Brief description of the drawings]
FIG. 1 is a diagram schematically showing a driving portion of a windbreak fence.
FIG. 2 is a front view showing a windbreak fence.
FIG. 3 is a right side view in FIG. 2 showing a windbreak fence.
FIG. 4 is a sectional view taken along line AA of FIG. 2;
FIG. 5 is a diagram showing a shape of a wire rope passing through a panel net.
FIG. 6 is a diagram showing a state where a wire rope is passed through a panel net and a connection portion of the wire rope.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Windproof fence 2, 3 Elevating panel 4 Fixed panel 5 Motor 6 Wire rope 7 Moving pulley 8 Constant pulley 9 Tension detecting device 10 Structure main body

Claims (4)

A structure in which a plurality of rows of panels are provided in a row so as to be lifted up and down by the top panel as one unit, and a moving pulley attached to the top panel and a structural body in which the plurality of panels are arranged A windshield fence, wherein one wire rope is laid over a fixed pulley attached to the wire, and the wire rope having one end fixed is rewinded and fed by one motor. The windbreak fence according to claim 1,
A windproof fence, wherein one end of the wire rope is connected to a tension detecting device, and the drive of the motor is stopped in response to the detection signal. In the windproof fence according to claim 1 or claim 2,
The windproof fence, wherein the panel is a state in which a wire rope is passed through a net, and the wire rope is connected to a frame to stretch the net. The windbreak fence according to claim 3,
The windshield fence is characterized in that the wire rope is connected to the frame so as to come off with a predetermined tensile load.

Images