JPS6051262A - Mold frame raising 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 The present invention relates to an apparatus for raising formwork used mainly for bridge piers, dams, and parts corresponding to the outer walls of high-rise buildings to the upper layer after each layer of concrete is poured.

Conventionally, this type of elevation was carried out using a crane or winch, but as the number of floors increases, various problems arise.

Therefore, a device has been developed that attaches a drive mechanism to the formwork and raises it using its own blade.

For example, a formwork pedestal (hereinafter referred to as a pedestal) on which the formwork is placed is provided separately from the formwork, and in addition to this, supports for a "guidance part movable in dual directions" 1 [1] are installed in parallel. It is known that the pedestal and the pedestal are alternately temporarily fixed to the concrete wall surface and are raised by a drive mechanism by mutual reaction force.

However, in the past, when removing the formwork, no special treatment was applied to the side edges of the formwork, making it difficult to move adjacent formworks relative to each other, making it difficult to remove and raise the formwork for the entire layer at once. There was a drawback that could not be avoided. Another disadvantage was that the next cutting operation could not be carried out until demolding was completed.

The present invention aims to solve the above-mentioned drawbacks by making the side edges of the formwork bendable or separable.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Figures 1 and 2 are front views showing the basic form of one step of the present invention, and Figure 1 shows concrete being poured on a certain floor (layer N). The formwork is placed on a frame temporarily fixed on the lower floor (layer N-1), while the support column 4 (hereinafter referred to as the column) which also serves as a guide member is also temporarily fixed on the lower floor. A wire rope 7c is fixed to a hoist 7a which has been replaced on top of the wire rope 7c via a hanging tab 7b, and is set in a vertical position where the support itself is about to rise.

FIG. 2 shows the branch office being raised, and the wire 1-b, which has been taken up to the pillar, is set at fID for the next operation, that is, raising the pedestal. Then, raise the pedestal and support 4. The positional relationship with h is as shown in FIG.

The formwork according to the present invention is a large frame 1,1.・・・
- and a side end formwork 2 attached to one side end so as to be bendable or separable so as to be placed between the large frames. As shown in Fig. 5, this side end formwork has a door-shaped steel formwork 2a attached to a connecting horizontal end piece 21) which is pivoted W2d at the end of the horizontal end piece 1b so as to be able to rotate in the horizontal direction. It is something. Then, make a straight line and attach the other end to the horizontal thick end of the adjacent large frame.
2 e large frame], 1. ... is side # formwork 2.2
．． It becomes an integrated formwork that incorporates ... alternately.

・In addition, when removing the side end formwork into an open door shape, attach a joint formwork 2C with a right-angled triangular cross section to the side end of the adjacent large frame corresponding to the door stop to facilitate opening and closing. do.

The large frame 1 is placed on a pedestal 3 which is temporarily fixed to the wall surface of the existing concrete (N-1) layer below by Siebolds 3a so as to be movable in an out-of-plane direction and freely tiltable. The state is shown in FIG.

The large frame 1 has a saddle 6 pivoted below its vertical end 1c.
tE of the frame 3 by the four-digit wheel 6C taken in a, 3e
5a % 5b or 'Lt 5 a
', 5b' can be selectively pivoted. Its travel is fixed to the lower part of the vertical end 1c so that it can rotate freely, and the demolding bolt 5c that extends in the intersecting direction is rotated, and the fixing bolt 3f and the bracket 3f are screwed together. 3
This is done by moving the beam 3c of the frame 3, which is integrated with g, as a reaction force.

When pouring concrete, the -Tζ end of the vertical thick end and the saddle stopper 6d are pivoted to the pin holes 5a15b of the beam, respectively, and the bolts 6c are inserted into the holes drilled at the IE position of the saddle.
The movement of the saddle is restrained using 3g of the metal fitting as a reaction force.

In this state (Fig. 1), concrete is poured and the formwork is removed after a predetermined curing period.
Remove the formwork first. The demolding is carried out by removing the bottle 2e from the other end of the connecting horizontal end and turning it horizontally, as shown in FIG. Then, attach the support rod 4, which will be described later, to the remains of the side end formwork.
-Geru.

Demolding the large frame is done in the following steps. First, remove the vertical end locking pin 5a and the saddle locking pin 5b that engage the saddle 6a and the lower end of the vertical end member with the frame 3.
After removing the tie bolt 1d that tightens the formwork, loosen the tar/buckle 6b that diagonally connects the saddle and the vertical end. Then, the large frame 1 is peeled off. Next, remove bolt 6C and remove the mold)
Rotate 5c to run the saddle and insert pin holes 5a' and 5b'
Align the M end and the stopper and insert the corresponding pins into the ITII. The position of this pin hole is determined by taking into consideration the center of gravity when raised.

After or in parallel with this demolding operation, the struts are carved. As shown in Figure 1, the wire rope is attached to a hoist 7b that is raised and lowered by a hoist 7a suspended from the upper end of the support pillar 4, and the wire rope is latched to a hanging block of one end or another support, and is attached to the lower end of the support support 4. The wire rope 7c wound around the lower side of the second lifting pulley 4d and the upper side of the pedestal pulley 3d is locked. Next, remove Siebold 4a. Then, the pillar is suspended in the air and supported by the wire rope 7C. The hoisting machine 7a on both sides is
When the two adjacent branches are driven, they are guided by guide rollers 30 fixed to the rack and stand and rise, and finally the second
The positional relationship is as shown in the figure. Thereafter, the Siebold 4a for the support is screwed into the hole anchor 4b for the support at the corresponding position to temporarily fix the support to the wall surface, and the wire rope 7c is removed to complete the work of raising the support.

It is convenient to raise the two pillars at the same time in this way, and in preparation for this, one of the adjacent pillars should be moved to the scaffolding frame 4C.
It is preferable to integrate them into a U-shaped unit.

Next, the formwork is raised together with the frame. This work does not require the support column 1 shoulder pulley 4d. As shown in FIG. 2, both ends of the wire rope 7c' are locked to the suspension blocks 7b17b on both sides, and the middle part is wound around the lower side of the pedestal pulleys 3d, 3d.

In this way, each machine can be made smaller, and even if there is a difference in lift between the left and right machines, it can be kept level.

Then, if you remove Siebold 3a for the mount according to the situation shown in Figure 2,
The pedestal 3 is suspended from the hoist 7a via the wire rope. When the hoist is driven, the gantry rises while being guided by the groove of the support column 4 engaged with the guide roller 3C, returning to the positional relationship as shown in FIG. Then, the pedestal is temporarily fixed again using the Siebold 3a for the pedestal, and the wire rope is removed.

Thereafter, the formwork is erected by the reverse procedure of the demolding work described above, concrete is poured, and the same process is repeated to construct a multi-layered concrete structure.

As described above, the present invention is capable of bending or separating the connecting portion of a formwork placed on a frame that alternately rises by mutually engaging with a support that also serves as a guide member while counteracting a mutual reaction force with an adjacent formwork. Therefore, it has the advantage that it can be raised independently without causing friction with the adjacent formwork when raising the Q.

Additionally, prior to demolding, the side end formwork of the joining part can be demolded, bent or separated, and the support column can be raised in parallel with the demolding of the remaining large frame, which shortens the construction period. Get the benefits you want.

[Brief explanation of drawings]

1 and 2 are front views showing an embodiment of the present invention, and FIGS. 3 and 4 are cross-sectional views taken along
A V-IV cross section is shown, respectively. FIG. 5 is a cross-sectional view taken along the line V--■ in FIG. 1, and FIG. 6 is a cross-sectional view taken along the line Vl--Vl in FIG. FIG. 7 is an enlarged view of the central part of FIG. 3. ■...Large frame, Ia...Steel formwork, ]b...Horizontal thick, IC...Wl Ia thick, ld...Tie bolt, 2
...Side end formwork, 2a...Steel formwork, 2b...Connecting horizontal end thick, 2C...Joint formwork, 2d12c...Pin, 3...(Formwork) frame, 38L... Siebold for mount, 3b... Hall anchor for mount, 3C... Guide roller, 3d... Pulley for mount, 3C... Beam, 3
f...Fixed nut), 31T...Bracket, 4...(
(also serves as a guide member) support, 4a... Siebold for support,
4b... Hole/car for pillar, 4c... Scaffolding frame,
4d...Pulley for raising the column, 5'as 5a'...Bin (and pin hole) for locking the vertical end, 5b, 5b
'--Saddle locking pinot (and bottle hole), 5C...
- Demolding bolt, 6... Demolding device, 6a... Saddle,
6b... Kuhn 1<-) barrel, 6C... wheel, 6d
... Stopper, 6e... Bar, 7... Drive mechanism, 7
a... Hoisting machine, 7b... Hanging pro-tsuku, 7c17c
'...Wire Rope Patent Applicant Representative of Obayashi Co., Ltd. Yasushi Anzai Figure 5 Figure 6 Figure 7 Procedural Amendment (In Button E October 2, 8, 1980 Commissioner of the Patent Office Wakasugi Ichiguchi Husband) 1 Indication of the case Patent application No. 156887 filed in 1982 Name of the invention Formwork raising device 3 Person making the amendment Relationship to the case Patent applicant address 3-37 Kyobashi, Higashi-ku, Osaka-shi, Osaka Prefecture 54
0 Name (054) Obayashi Corporation Representative President Yoshi Obayashi Department 4 Agent Address 2-3 Kanda Tsukasa-cho, Chiyoda-ku, Tokyo 10
1 Spontaneous amendment within the Patent Division, Technology Management Department, Tokyo Head Office, Obayashi Corporation 6 Number of inventions increased by the amendment 0 7 Target of the amendment (Contents of the amendment (1) Line 1 of page 6 of the specification, ``Stolen j'' (2) Same as above, line 12, amend "stolen" to "pierced".

Claims (4)

[Claims] (1) Supports that are temporarily fixed to the poured concrete wall and alternately move up the wall using a drive mechanism while taking reaction forces from each other and formwork mounts are arranged alternately in a mutually movable engaged state. At the same time, one side end of the formwork placed on the formwork frame so as to be movable in an out-of-plane direction of the wall surface thereof, that is, the part of the formwork where the support column rises can be bent or separated. Formwork lifting device. (2) A hoist whose drive mechanism is locked to the upper end of a support, a hanging block that is raised and lowered by the hoist, a wire rope with one end locked to the hanging block and the other end locked to the hanging block of another support; The wire rope is wound downward and used only when the formwork frame is used as a reaction force to raise the column. A pulley for raising the column is attached to the lower end of the column, and the wire rope is wound upward when raising the column. 2. The formwork lifting device according to claim 1, which comprises a turntable pulley which is used by winding the formwork downward when the formwork frame is raised. (3) One end of the formwork is integrally attached to a connecting horizontal end pivoted on one end of the horizontal end. Range 1 or 2 includes Kiho's formwork lifting device. (4) Claim 1, wherein the formwork at the side end that cannot be bent or separated is a joint formwork with a right triangular cross section.
The formwork lifting device according to items 1 to 3.