JPH058837Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" This invention involves installing arch bones in a tunnel-like manner on the road surface at predetermined intervals, and placing vinyl sheets, cheesecloth, light-shielding sheets, etc. over the arch bones. This invention relates to a device for rolling up and down the sheet along the arch bone for ventilation and the like in a so-called cultivation tunnel covered with a sheet.

``Prior art'' In the case of rolling up or lowering a sheet coated on the arch bone in a cultivation tunnel, for example, the method disclosed in Japanese Unexamined Utility Model Publication No. 56-89366 and Japanese Unexamined Patent Publication No. 56-8936 is used.
As disclosed in Publication No. 78539, the hem of the sheet is fixed to a winding rod that is slightly longer than the length of the tunnel, and the sheet is rolled up and rolled up by rolling this winding rod over the arch bone. I was lowering it.

``Problem to be solved by the invention'' Since the conventional winding rod remains long, it is inconvenient to store the winding rod when the tunnel is removed.

In addition, in the cultivation tunnel, in order to prevent the sheet from being blown away by the wind, a rope is stretched over the sheet in a zigzag pattern to hold it down, and the ropes are fixed alternately to both sides of the tunnel. However, in conventional winding up and down using a winding rod, it is inconvenient that the entire rope must be untied before winding up or down the sheet.

An object of the present invention is to provide a winding tool for a tunnel sheet that solves the above-mentioned problems.

"Means for Solving the Problem" In order to achieve the above-mentioned object, the present invention alternately arranges a short winding shaft with a large diameter and a long transmission shaft with a small diameter in the axial direction. are connected in a swinging state.

It is preferable to use a large diameter metal rod or other member with some weight as the winding shaft.

"Operation" The winding tool of the present invention is installed at the hem of a tunnel with the hem of the sheet fixed to the winding shaft, and an appropriate winding handle or the like is attached to one end of the winding tool, and the handle or the like is used to arch the winding tool. When rolled upwards over the bones, the sheet is rolled up on the winding shaft, and when rolled downwards, the sheet is rolled down toward the hem and becomes in an expanded state.

When the tunnel is removed, folding the winding shaft and transmission shaft will shorten the entire tunnel, making it convenient for storage.

When a sheet is held down on the arch bone with a rope stretched in a zigzag pattern, the winding axis is located between the rope and the adjacent rope on the outside (upper side) of the rope at the foot of the tunnel. Place the winding tool as shown and fix the sheet to the winding shaft.

In this state, when the winding tool was rolled upwards on the arch bone, the sheet was wound around the winding shaft so that only the areas between the adjacent ropes were turned up, and the other parts of the sheet were held down by the ropes. Maintain tension. That is, the sheet is partially rolled up while remaining taut without loosening or untying the rope. This is due to the fact that the winding shaft and the transmission shaft with a smaller diameter are alternately connected.

When the roll-up device is rolled in the opposite direction, the sheet returns to its original expanded state.

"Embodiment" A preferred embodiment of the sheet winding device according to the present invention will be described with reference to the drawings.

Figures 1 and 2 are examples of this, in which winding shafts 1 with large diameters and short and transmission shafts 2 with small diameters and long are arranged alternately in the axial direction. Connected so that they can swing.

The winding shaft 1 in this example has a diameter of about 19 mm and a length of
It is an iron rod or aluminum alloy rod of about 100 mm, and the transmission shaft 2 has a diameter of 4 to 5 mm and a length of 1000 to 1500 mm.
An iron rod of about mm is used.

In this embodiment, as shown in an enlarged view in FIG. 2, both ends of the winding shaft 1 are formed into a bifurcated shape with cuts 11, and a pin 12 perpendicular to the shaft center is caulked and fixed within the cuts 11. , a hook portion 21 is formed at the second end of the transmission shaft, the hook portion 21 is hooked onto the pin 12, and the tip of the hook portion 21 is further bent to prevent the hook portion 21 from coming off the pin 12. By doing so, the winding shaft 1 and the transmission shaft 2 are connected so as to swing relative to each other.

The hoisting tool of this embodiment is used for a cultivation tunnel a in which arch bones 4 are set up at regular intervals in an alley as shown in Fig. 1, and a sheet 5 made of vinyl or the like is stretched over the arch bones 4. In this case, the seat 5 is placed so that the transmission shaft 2 is located at one end of the tunnel a.
A winding tool is placed along the hem of the tunnel a, and the sheet 5 is held between the clip 3 having an arc-shaped cross section and the winding shaft 1 as shown in FIG. A winding handle 6 with a grip 61 is connected to the end of the transmission shaft 2, for example, by a universal joint 62 or the like.

On the side where the hoisting tool is attached, the hem of the sheet 5 is pressed down by the weight of the hoisting tool, so
Sheet 5 often requires no other fixing means.

When rolling up the hem of seat 5 for ventilation etc.
When the transmission shaft 2 is rotated in the direction of winding up the sheet 5 using the winding handle 6, the sheet 5 is wound onto the winding shaft 1 and rolled up, and the handle 6 is pushed downward as shown by the two-dot chain line in FIG. Stretch it,
Make sure that the hoisting tool does not roll toward the bottom of tunnel a.

When rolling down the sheet 5, when the winding handle 6 is placed in the state shown by the solid line in FIG. 1, the winding tool rolls toward the hem due to gravity, and the sheet 5 returns to its original state.

Therefore, the winding tool of this embodiment is very easy to operate and can quickly roll up and down the hem of the sheet 5 all at once. Further, since the hem side of the installed tunnel also functions as a weight for stopping the hem of the seat 5, in many cases, no other means for stopping the hem of the seat 5 is required at this portion.

Further, in the hoisting tool of this embodiment, when the tunnel a is removed, the hoisting shaft 1 and the transmission shaft 2 can be folded at the connecting portion to shorten the length and store it in a storage room or the like.

If tunnel a is wide, these hoisting tools are installed at both skirts of tunnel a.

Even when the tunnel a is curved with a large radius when viewed from above, the transmission shaft 2 having a small diameter bends, so that it can be wound up or down by following the curve.

As shown in FIG. 3, a cultivation tunnel a has a structure in which a rope 7 is stretched in a zigzag pattern by fixing it with hook-shaped stakes (not shown) at the foot of the tunnel, and the sheet 5 is held down by this rope 7. The winding shaft 1 is located between the ropes 7, 7 stretched in a shape, and the transmission shaft 2 is located above (or outside) the rope 7, and the hem of the sheet 5 is connected to the winding shaft 1.
Fixed to.

In this way, when the transmission shaft 2 is rotated in the winding direction, the rope 7 on which the winding shaft 1 is located,
The hem of the sheet 5 is pulled up and rolled up only between 7, and the hem of the tunnel greenhouse a can be left partially open.

Even in the usage as shown in FIG. 3, the winding up and winding down operations and other functions are the same as in the case of FIG. 1.

The diameter and length of the winding shaft 1 and the transmission shaft 2 are set appropriately by taking into consideration the size of the tunnel greenhouse a, the material of the sheet 5, etc., and the ratio of the diameters of the winding shaft 1 and the transmission shaft 2 is In addition to the above-mentioned factors, the length ratio between the two lengths is also considered and set appropriately.

The winding shaft 1 and the transmission shaft 2 have a U-shaped or annular connecting piece 1 at the end of the winding shaft 1, as shown in FIG. 4, for example.
3 is fixed by protruding in the axial direction, and this connecting piece 13
The hook portion 21 of the transmission shaft 2 can be hooked onto the transmission shaft 2, or the connection can be made by other means.

"Effects of the invention" The winding tool according to the invention has large diameter, short winding shafts and small diameter, long transmission shafts arranged alternately in the axial direction, and the winding shafts and transmission shafts are each connected in a swingable manner. Therefore, the hem of the sheet can be fixed to the winding shaft, and winding up and down can be done easily and quickly.

When removing the tunnel, it is convenient because it can be folded short and stored in a storage location.

Furthermore, even in a tunnel where a rope is stretched in a zigzag pattern to hold down the sheet, the sheet can be partially rolled up or down without loosening or removing the rope.

[Brief explanation of the drawing]

Fig. 1 is a partial perspective view showing an example of the hoisting device according to the present invention in an installed state, Fig. 2 is a partially enlarged perspective view, Fig. 3 is a partial perspective view showing another installation state, and Fig. 4 is a partial perspective view showing an example of the hoisting tool according to the present invention. FIG. 2 is a partial perspective view showing an example. Explanation of main symbols in the figure: 1 is a winding shaft, 2 is a transmission shaft, 4 is an arch bone, 5 is a seat, and a is a cultivation tunnel.

Claims (1)

[Scope of utility model registration request] A winding tool for a tunnel sheet, characterized in that a short winding shaft with a large diameter and a long transmission shaft with a small diameter are arranged alternately in the axial direction, and the winding shaft and the transmission shaft are each swingably connected.