JPS6154907B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a portable communication antenna tower that can be easily disassembled and assembled and can be erected at any location.

Generally, a tower with an antenna attached is permanently installed for wireless communication lines. However, there are cases where the tower collapses due to a disaster such as a typhoon, or the communication line is interrupted due to a malfunction of the tower's communication equipment, and it may not be possible to repair it immediately. In such cases, it is normal to temporarily construct a temporary antenna mounting tower as quickly as possible to restore communication lines and use it until the permanent tower is repaired. Therefore, since the construction of such a temporary tower is urgent, there is a particular need for an antenna tower that can be constructed safely in as short a time as possible. Furthermore, it is desirable that the construction cost be low. Therefore, such towers are constructed by transporting the tower components that can be easily transported by truck etc. to the site, assembling them in a reclining position on site, and then building the assembled tower body into a tower base with a three-dimensional framework structure. Construction is carried out by hoisting it upright using wire ropes, ropes, pulleys, and other appropriate lifting means, and fixing it to a base.

As a conventional tower body of this type, there is an antenna tower as shown in FIG. That is, the side part of the tower body 1 is hinged to the top part 3a of the base 3 at a distance H corresponding to the height H of the base 3 in the longitudinal direction from the lower end 1a of the tower body 1 as shown in the figure. The rope 5 connected to the lower end 1a of the tower body 1 is
The tower body 1 is erected by being pulled in the direction of arrow A via a pulley 7 provided at the bottom of the base 3 by a lifting means 6 also provided on the base 3, such as a manual or power winch. However, this antenna tower has the advantage that the rope 5 can be pulled with a relatively small tensile force and the tower body 1 can be easily erected. Since this is done by inputting data, it is very difficult and time-consuming, and it is also dangerous.

Another conventional example is an antenna tower shown in FIG. That is, as shown in FIG. 2A, the lower corner 1c of the lower end 1a of the tower body 1 is hinged to the bottom member 3b of the base 3, and the upper end of the tower body 1 is hinged to the bottom member 3b of the base 3. The rope 5 connected to an appropriate point near 1b is moved in the direction of arrow B by means of a hoisting means 6 similar to that shown in FIG. The structure is such that the tower body 1 is erected by being towed. This antenna tower has the advantage that it is easy to hinge the lower corner 1c of the tower body 1 to the base bottom member 3b. However, as shown in FIG.
If D passes the vertical position, the center of gravity of the tower body 1 will suddenly shift to the rope pulling side, which may cause violent movement and be dangerous, so move the rope 5 in the opposite direction (in the direction of arrow C).
There is a problem in that it has to be adjusted by pulling the input.

Therefore, an object of the present invention is to improve the above-mentioned conventional drawbacks, to make it easy to prepare the tower for erection, to enable it to be safely and rationally erected to a vertical position, and to increase the height of the tower and reduce the construction work area. An object of the present invention is to provide a portable communication antenna tower that can be used for communication.

According to the present invention, there is provided a tower base in which a bottom member and a vertical vertical member are formed from the bottom member as a framework, and a long tower body that is erected and fixed along the vertical members of the tower base from a lying state. , a hinge member that connects the upper corner of the lower end of the long tower body to the tower base as a rotational fulcrum at a position where the lower end of the tower body and the vertical member surface of the tower base contact each other when the long tower body is lying on its side; and a lifting means provided on the tower base and connected to the other end of the long tower body through a pulley at the top of the tower base to pull up the tower body and raise it upright. A portable communication antenna tower is provided.

Next, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

FIGS. 3 to 5 are diagrams showing embodiments of the present invention. In FIG. 3A, the tower base 3 is formed three-dimensionally by a framework, and on the other hand, the tower body 1 is assembled and formed in a recumbent state, and the upper corner 1e of the lower end 1a of the tower body 1 is attached to the base 3. It is hinged to the base vertical member 3c. This hinge member 4 may have any known structure as long as it has the desired strength, for example, may be hinged with a pin. This tower body 1 is a nested tower body that includes an upper tower body 1'' within a lower tower body 1'.Next,
A wire rope or rope 5 is connected to the vicinity of the upper end 1b of the tower body 1, and this rope is connected to a hoisting means 6 similarly provided on the base 3, such as manual or powered, via a pulley 7 provided on the base top 3a. Guide and connect to winch etc. The hoisting means 6 is selected to be manual or powered depending on factors such as the weight of the tower body 1. With the above configuration, the state in which the tower body 1 can be easily erected is completed.

Next, by operating the lifting means 6 and pulling the rope 5 in the direction of arrow E using the hinge member 4 as a rotational fulcrum, the tower body 1 is smoothly raised to a vertical position.
Subsequently, the tower body 1 is fixed to the base 3 and the erection work is completed. The state in which the tower body 1 is erected by this erecting procedure is shown in FIG. 3B. That is, according to this raising procedure, by selecting the position of the hinge member 4 of the tower body 1 at the upper corner 1e as described above as the raising rotational fulcrum, the center of gravity of the tower body 1 is suddenly raised while it is being raised to a vertical state. The tower body 1 can be erected rationally, safely and smoothly without movement. Furthermore, after the erection is completed, as shown in Figure 3 (b), the tower body 1
A space with a height W corresponding to the width W of the tower body 1 is inevitably created between the lower end 1a and the bottom member 3b of the base 3, and as a result, the height of the tower body 1 is increased by this amount. It also has the advantage of being increased. Furthermore, when assembling the tower body 1 in a lying position, it can be brought closer to the base 3 by the W dimension compared to the conventional example shown in FIG. 2A, so the assembly area is reduced by that amount. It also has the advantage of

FIG. 4 shows an example of a finally completed tower in which a parabolic antenna 11 and the like are attached to a pole 10 on an antenna tower in an upright state according to the present invention. That is, after completing the erection of the tower body 1, the tower branch lines 9 are stretched in all directions from the upper part of the lower tower body 1' to secure the tower body 1', and then the upper tower of the nesting part is The tower body 1 is erected with the tower body 1'' projecting upward and fixedly installed.The column members of this tower body 1 are connected only by diagonal members, and horizontal members 1f are attached at appropriate intervals on one side of the tower body 1. is provided, and is configured to serve as a strength member and a ladder at the same time.

FIG. 5 shows another example of a tower that was erected and finally completed in the same manner as in FIG. 4. In this case, the difference from the example shown in FIG. 4 is that the base 3 has a very simple structure to reduce weight and manufacturing costs. In order to prevent the reversal of the base bottom member 3,
The tower body 1 is erected by placing an inexpensive sand bag 13 as a weight on top b.

As described above, the portable communication antenna tower according to the present invention contributes to shortening tower erection time and man-hours, improving construction safety, and reducing construction costs.

[Brief explanation of the drawing]

Figures 1 and 2 are schematic diagrams of conventional towers;
The figure is a schematic diagram of the tower of the present invention and an explanatory diagram of the procedure for erecting the tower, and FIGS. 4 and 5 are perspective views of the finally completed tower after the tower according to the present invention is erected. 1... Tower body, 1'... Lower tower body, 1''... Upper tower body, 1a... Lower end of tower body, 1b... Upper end of tower body,
1c... lower corner of the tower body, 1d... upper diagonal corner of the tower body, 1e... upper corner of the tower body, 1f... horizontal member,
3... Base, 3a... Base top, 3b... Base bottom member, 3c... Base vertical member, 4... Hinge member, 5
... rope, 6 ... hoisting means (manual or power winch), 7 ... pulley, 9 ... branch line, 13 ... sand bag.

Claims (1)

[Claims] 1. A bottom member, a tower base in which a vertical member is formed from the bottom member as a framework, a long tower body that is erected and fixed along with the vertical members of the tower base from a lying state, and the long tower a hinge member that connects the upper corner of the lower end of the elongated tower body to the tower base as a rotational fulcrum at a position where the lower end of the tower body contacts the vertical member surface of the tower base when the body is lying on its side; The tower is characterized by comprising a lifting means provided on the stand and connected to the other end of the long tower body through a pulley at the top of the tower base to pull a rope to raise the tower body upright. Portable communication antenna tower.