JPS6088768A - Iron tower abutment constructing method and apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a method for constructing an environmentally friendly steel tower, that is, a single type power transmission tower under existing lines, and a device used in the method. .

<Prior Art> In constructing this glue power transmission tower, a climbing crane is generally used.

Since all of these construction methods are stacked, rebuilding under existing wires requires relocating the wires.

Furthermore, construction of on-site joints requires temporary scaffolding and requires work at heights.

<Purpose of the Invention> This invention was proposed in view of the above circumstances, and its purpose is to be able to carry out construction work without completely stopping the existing line, and to safely and quickly install a steel tower near the ground. The object of the present invention is to provide a construction method and an apparatus for the construction.

<Structure of the Invention> In the method for constructing a steel tower according to the present invention, a guide tower of a required height is erected on the base of the steel tower, and an upper guide ring and a lower guide ring capable of holding a unit tower body are connected to the guide tower. - configured to move up and down within the guide tower, and after connecting the unit tower body carried into the lower part of the guide tower to the upper unit tower body, the unit tower body is held and raised by the upper and lower guide rings, The steel tower is constructed from the top to the bottom near the ground by repeating the loading and connecting process.

The steel tower construction device according to the present invention includes a guide tower erected at a required height on the base of the steel tower, and a unit tower that is movable up and down along a guide rail erected on the inner surface of the guide tower. An upper guide ring and a lower guide ring capable of holding a body, a suspension beam connecting the upper guide ring and the lower guide ring and having retaining holes formed at equal intervals in the vertical direction, and a guide tower. A lift-up mechanism is installed approximately at the center in the vertical direction and is capable of moving the suspension beam up and down, and the lift-up mechanism includes upper and lower locking pins that can move in and out of the locking hole. The upper and lower securing parts are connected by a fluid pressure cylinder, and one of them is fixed to the guide tower, so that the tower body is lifted up in an inchworm-like manner by such a lift-up mechanism. This is what I did.

<Example> The present invention will be described below based on an illustrative example. As shown in FIG. 1, this embodiment is a case of an iron pole T having a cross arm A on the upper part, and a construction device 1 according to the present invention.
The steel tower T is assembled from the top to the bottom and raised.

As shown in FIGS. 2 to 6, the construction device 1 includes a guide tower 3 erected at a required height on a steel tower foundation column base 2.
and an upper guide ring 5 and a lower guide ring 6 which are movable up and down using guide rails 4 erected along the inside of the column members 3a of the guide tower 3 and can hold the unit tower body TU. , a suspension beam 7 that connects the guide rings 5 and 6, and a lift-up mechanism 8 that is installed approximately at the vertical center of the guide tower 3 and can move the suspension beam 7 up and down.

The guide tower 5 is divided into an upper guide tower 3A and a lower guide tower 3B.

The upper and lower guide rings 5 and 6 are divided into two parts, and have guide rollers 9 and 10 that can roll on the guide rail 4 at positions corresponding to the column members 3a. Furthermore, as shown in FIG. 7, on the upper surfaces of the guide rings 5 and 6, a plurality of suppressing members 12 are provided at equal intervals in the circumferential direction and are moved forward and backward by a screw member 11, so that the screw member 11 can be adjusted. The unit tower body TU is held while centering the unit tower body TU. In addition, the lower guide ring 6 is provided with a hanging metal fitting 15.
A plurality of guide rings 6 are attached at equal intervals in the circumferential direction, and by connecting these hanging fittings 13 to a hanging piece 14 at the bottom of the unit tower body, the lower guide ring 6 receives the load of the tower body when it is pushed up. .

The suspension beam 7 is disposed at a position corresponding to the guide rail 4, and its upper and lower ends are pinned to guide rings 5 and 6, respectively. Further, engagement holes 15 are formed in the suspension beam 7 at a predetermined pitch in the vertical direction.

The lift-up mechanism 8 is disposed on each hanging beam 7, and as shown in FIGS. 8 and 9, the lifting beam 7 has an upper lashing part 16 and a lower lashing part 17 passing through the center, and a lower lashing part 17. The lashing part 17 is attached to the adjacent horizontal member 3 of the lower guide tower 5B.
The upper securing part 16 is connected to the lower securing part 17 by two hydraulic cylinders 18 and is movable up and down.

The upper and lower securing parts 16 and 17 have an upper locking pin 19 and a lower locking pin 20 that can enter and exit the locking hole 15.
are provided, and these locking pins 19, 20 are locked when the suspension beam 7 moves relative to the pins 19.20 in the upward direction (when the suspension beam 7 is raised and the pins 19.2
0 moves in the downward direction relative to the hanging beam 7), it is automatically attached to and detached from the retaining hole 15. In other words, the pins 19 and 20 each have an inclined surface that slopes downward toward the main body, and are movable forward and backward by the sleeve 21. Furthermore, the proximal ends of the pins 19 and 20 are pinned to the lashing section via the manual lever 22 and link 25, and the tip of the manual lever 22 and the lashing section are connected by a spring member 24.

With this configuration, the pins 20, 21 are biased toward the suspension beam 7 by the spring member 24, and the inclined tip portion automatically and reliably pins the suspension beam 7 during relative movement in the upward direction. Attachment and detachment are performed. Therefore, when lifting the suspension beam 7, that is, the guide rings 5, 6, the lifting beam 7, that is, the guide rings 5, 6, is automatically raised intermittently like an inchworm simply by expanding and contracting the hydraulic cylinder 18.

When lowering the suspension beam 7, the pins 19 and 20 are manually moved in and out of the retaining hole 15 alternately using the manual lever 22 to lower it.

Further, as will be described later, when it is desired to forcibly lower the suspension beam 7, the intermediate locking pin 25 is used since the pins 19 and 20 will automatically come out of the engagement hole 15. Normally, it is separated from the retaining hole 15.

Next, as shown in FIGS. 2 and 5, a pair of loading rails 26 are laid at the bottom of the guide tower 3, sandwiching the column base 2 and extending laterally. A tower body carrying cart 27 is installed.

In the above configuration, first, the assembly of the construction device will be explained. Here, while assembling the device, the iron pillar T
Assemble the upper part of the.

■ Install the tower foundation column foot 2 at the center of the tower and fix it with anchor bolts 2B (see Figure 10(a)). ■ Assemble the lower guide tower 3B. However, the horizontal member 3b and guide rail 4 on the tower body entrance face are not assembled. The lower work scaffolding 29 is also assembled except for the tower loading entrance surface (see FIG. 10(b)).

(2) Carefully assemble the carrying rail 26 horizontally, and install the tower body carrying cart 27 on this rail 26. The pre-assembled lower guide ring 6 is temporarily placed in the center of the carry-in cart 27 via a sleeper 50 (see FIG. 10(C)).

■ Carry the trolley 27 into the center of the guide tower 6 and fix it.

The upper unit tower body TU, 2 to be assembled first is placed and fixed on the center of the trolley 27 (see FIG. 10(d)).

■ With the lift-up mechanism 8 inserted into the suspension beam 7 and fixed with the locking pins 19 and 20, the suspension beam 7 is suspended by a crane, and the lift-up mechanism 8 is installed on the horizontal member 5b (see Fig. 10). e) Reference: By slightly lifting the suspension beam 7 from this state, the load of the suspension beam 7 on the locking pin is removed, so remove the locking pin.

As a result, the hanging beam 7 and the lift-up mechanism 8 are freed, and the hanging beam 7 is lowered down to the lower guide ring 6.
(See Fig. 10(f)) 0. Assemble the horizontal members, guide rails, and work scaffolding on the tower entry surface of the lower guide tower 3B.

- Lower the upper guide ring 5 onto the hanging beam 7 and connect it to the bottle (see Fig. 10(g)).

(2) Assemble the upper guide hoe 3A onto the lower guide tower 3B, leaving the loading surface intact (see Fig. 10(h)).

- Suspend the top column TU, 1 onto the unit tower body TU, 2 and connect it with bolts (see Figure 10 (1)).

O Assemble the horizontal member of the loading surface of the upper guide tower 3A, the guide rail, and the upper work scaffold 61. Furthermore, a tower body holding device i32 is installed at the top of the kite tower 3A (
(See FIG. 10(j)) 0■ Connect the hydraulic unit 55 and the hydraulic cylinder 18 of the lift-up mechanism with a high-pressure rubber hose. The hydraulic unit 36 and the operation panel 34 are connected with a cable. Connect the power supply to the hydraulic unit control panel (
(See Figure 10(k)).

Now that the preparation for the looming has been completed in the 0th order, looming using such a device will be explained.

(1) From the state shown in FIG. 10(k) or FIG. 11(a), the hanging metal of the lower guide ring 6, j415, and the hanging piece 1 of the lower unit tower body in the guide tower 3.
4 are connected via a bottle, and the length of the screw is adjusted so that the lift-up weight is evenly applied to each hanging fitting 13.

(11) As shown in FIG. 7, the pressing members 12 of the upper and lower guide rings 5 and 6 are adjusted by the screw members 11 to hold the column so that the center of the column is located at the center.

(11) Turn on the control power of the hydraulic unit 33 and start the hydraulic pump.

(IV) After the hydraulic cylinder 18 is retracted and the upper and lower locking pins 19 and 20 are securely inserted into the engagement hole 15, turn on the lift switch on the operation panel 34. As a result, the upper and lower guide rings 5,
6 is pulled up, and the column body connected to the lower guide ring 6 is lifted up. Here, lower guide ring 6
Since the pillars are connected to each other, a tensile load acts on the suspension beam 7, so there is no fear of buckling, and the suspension beam 7 can be made into a lightweight member.

(v) The lower locking pin 20 is automatically removed when the suspension beam 7 is pulled up, and the lower locking pin 20 is automatically removed from the lower engagement hole 1.
Lift up until it automatically enters 5.

(Vl) After confirming that all the lower locking pins 20 have entered the lower engagement holes 15, turn the lowering switch 02.
J, the hydraulic cylinder 18 is retracted and the upper locking pin 19 is automatically removed and retracted until it enters the lower engaging hole 15.

(VID Repeat the above-mentioned inchworm-like intermittent operation to lift up the tower to a height where the next unit tower TUi can be carried in (see Fig. 11 (1))).

(Vllll) On the other hand, after the tower body begins to lift up and the load on the truck is removed, the truck fixing fittings (not shown) are removed and the truck 27 is carried out of the guide tower 3.

(lx) The next tower body TUi is mounted on the trolley 27 and fixed at the center of the trolley by adjusting the tower body holding fittings 35 (see FIG. 5) on the trolley.

(×) After confirming that the height to the bottom of the tower body that was previously lifted up is such that the next tower body TUi can be carried in without any problem,
Carry the trolley 27 to the center of the guide tower 3 and fix it (first
(See Figure 1 (C)).

(XI) IJ Lift down the upper tower body that was soft-topped using the lowering switch and lower it until it touches the upper joint surface of the tower body TUi on the trolley. If they do not fit, loosen the tower body holding fittings 35 (see Figure 5) on the trolley 27 and adjust so that the upper and lower joint surfaces match. 〇(xll) In the case of welded joints, connect the backing material to the mating material. It is inserted into the tower body as a guide, but if it cannot be inserted to the joint surface due to the weight of the upper tower body alone due to deformation of the tower body, insert the intermediate locking pin 25 into the engagement hole 15, retract the hydraulic cylinder 18, and press fit. (Because the upper and lower locking pins 19 and 20 are structured to automatically come out in the downward direction).

(Xl11) Bolt or weld the upper and lower tower joint surfaces.

(,*) Adjust the tower body holding device 32 at the top of the guide tower to hold the tower body (see FIG. 11(C)).

(XV) Slightly retract the hydraulic cylinder 18, remove the load on the hanging fitting 1!1 of the lower guide ring 6, and then remove the joint pin. Next, the upper and lower guide rings 5
, 6 are loosened to free the tower body and guide rings 5, 6.

(XVI) By manually pulling out the upper locking pin 19 and extending the hydraulic cylinder 18, the upper locking pin 19 automatically enters into the retaining hole 15 one step above. Further, remove the lower locking pin 20 by stretching it until the load on the lower locking pin 20 is released.

(xll) Retract the hydraulic cylinder 18 to lower the suspension beam 7, and the lower locking pin 20 automatically moves into the retaining hole 1.
5 and decreases until the load is applied to the pin. (The upper and lower guide rings 5 and 6 will be lowered by one pitch of the engagement hole.) (xvjl) The above-mentioned (XVD, 0#lp (7) Inchworm movement fi4 repeat 1., hanging the lower guide ring Gold J
%13 is lowered until it can be joined to the hanging piece at the bottom of the tower body on the trolley (see Figure 11(d)).

A steel pillar is constructed by repeating the above operations.

In addition, when assembling the reading group A, the tower body is lifted up, and once the reading group attachment part passes the top of the guide tower 3, the reading group A is installed on the upper work scaffold. here,
The reading club A should be folded upwards between the overhead wires so that there is no problem during lift-up. Next, after the entire lift-up and joining are completed, the assembly A is returned to its normal shape and bolted together.

In addition, we installed the reading assembly A so that it was parallel to the overhead wire without folding it, lifted up the entire structure, and after 90 minutes after the connection was completed.
It may also be rotated.

Furthermore, in the case of welding, the welded joints are painted inside the guide tower and on the upper work scaffold after welding and inspection are completed. Depending on the conditions, a scaffolding for painting may be installed at the top of the guide tower, and painting will not be carried out at high places.

<Effects of the Invention> As described above, the method for constructing a raised structure according to the present invention provides the following effects.

■ Construction work can be carried out without relocating existing lines or completely stopping power transmission (stopping one side of the line), eliminating the need for stopping power transmission or relocating, and shortening the construction period.

■ Reducing work at heights such as assembly, welding, and painting, leading to safer work.

■ Since the work is done on a guide tower workbench rather than on temporary scaffolding, the quality of both welding and painting improves.

■ Can be constructed even in narrow spaces.

The push-up construction device according to the present invention has the effects (1) to (4), and also has the following effects.

(1) Since the hydraulic cylinder and locking pin push up like an inchworm, it is possible to perform safe and reliable work with a relatively simple configuration.

(1) Since the weight of the tower is supported by the lower guide ring, the weight of the hanging beam can be reduced, and the weight of the device can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a steel column, FIG. 2 is a front view showing a construction device according to the present invention, FIGS. 3, 4, and 5 are sectional views taken along the line T in FIG. A sectional view taken along the line V-V, Fig. 6 is a sectional view taken along the ■-■ line in Fig. 3, Fig. 7 is a partially enlarged sectional view of the guide ring, and Figs. 8 and 9 show the lift-up mechanism. Front view, longitudinal sectional view, Figures 10(a) to (k)
) is a process diagram showing the assembly of the lift-up mechanism and the upper part of the steel tower in order of process, Figures 11 (a) to (e) are process diagrams showing the method of raising the tower body in order of process, and Figure 12 (a) ~
(d) is a process diagram showing an example of a method for attaching a reading board in order of steps. T... Steel pillar, A... Reading, 1. Sachi construction equipment, 2... Steel tower foundation column foot, 5, 3A, 3B, 9 guide tower, 3a.
・Column wing, 3b...Horizontal member, 4...Guide rail, 5
・・Upper guide ring, 6・・Lower guide ring, 7・
・Hanging beam, 8111 + lift up machine 41,9,1
0-.Guide roller, 11..Screw member, 12..Press member, 13.φ hanging fitting, 14..hanging piece, 15.
・Engagement hole, 16... Upper lashing part, 17... Lower lashing part,
18...Hydraulic cylinder, 19...Upper locking bin,
20. Locking pin for lower part, 21 φ sleeve, 22
11. Manual lever, 23. Link, 24.. Spring member, 25.. Intermediate locking pin% 26. e-loading rail, 27.. Tower body loading truck, 28.. Anchor bolt, 2
9. Lower work scaffolding, 30. Sleepers, 31. Upper work scaffolding, 32. Tower body holding device, 33. - Hydraulic unit.
64...Operation panel, 35II/Tower body holding metal fittings. 71″!1 Brush 6 (2) 0 8th day; 5+ 9 Figure 10 (a) (b) h (d) (e) Figure 10 (9) (i) (1) (a) ( b) Figure 11 (e) (C) (a)

Claims (1)

[Claims] (1) A guide tower of a required height is erected on the base of the steel tower, and an upper guide ring and a lower guide ring capable of holding unit tower bodies move up and down within the guide tower. After the unit tower carried into the lower part of the guide tower is connected to the upper unit tower I, the unit tower is held by the upper and lower guide rings and pushed up, and carried in, connected, and
A method for constructing a steel tower by repeatedly raising the tower from the top to the bottom near the ground. (2) A guide tower erected at a required height on the base of the steel tower, and an upper part that is movable up and down along a guide rail erected on the inner surface of the guide tower and can hold the unit tower body. The guide ring, the lower guide ring, the upper guide ring, the lower guide ring)-f, the connection I, the so-1)
The lift-up mechanism is equipped with a suspension beam in which retaining holes are bored at equal intervals in the vertical direction, and a lift-up mechanism that is installed approximately in the vertical center of the guide tower and can move the suspension beam up and down. The mechanism includes upper and lower securing parts each having an upper and a lower locking pin that can be moved in and out of the securing hole, and these upper and lower securing parts are connected by a hydraulic cylinder, and one of them is connected to the guide. A steel tower elevating construction device characterized by being fixed to the tower.