KR100817198B1 - The supporter for concrete forms of slab - Google Patents

Abstract

A mold supporter for slab construction is provided to reduce a descending speed of the supporter gradually and to prevent an accident by operating a sliding bar operating device, which is formed on an outer peripheral surface of a sliding bar, electrically or manually, and lifting up and down the sliding bar slowly. A mold supporter for slab construction comprises a fixed bar(10), a sliding bar operating device(20), a sliding bar(30), and a driving device(40). The sliding bar operating device has a mounted ring(26), a driven gear(24) rotated on the mounted ring, and operating rings(21) formed with female threads. The sliding bar is inserted in an inner peripheral surface of the fixed bar. The driving device includes a driving gear(42) combined with one end of a gear shaft(41) whose other end is rotated by a driving drill(D). When the drill is operated, the driven gear is rotated and the sliding bar is lifted up and down. The driving device includes a supporting bar connecting part(44), a hollow shaft supporting rod(43), a gear shaft, a driving gear, and the driving drill. The sliding bar operating device is fixed by catching a catching projection of a hook, which is caught at a hook supporting part(12), at the outer peripheral surface of the upper part of the driven gear.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a slab-

The present invention relates to a mold supporter for slab construction, in which safety is ensured by gradually decreasing the height by self-weight of a formwork or the like when the slab formwork is dismantled and by operating or manually operating a separate power transmission device.

Generally, the multi-layered structure of a reinforced concrete structure starts with the installation of a wall formwork and a slab formwork, in which a wall formwork such as a mold having a shape of a wall is formed first, and a slab formwork is installed horizontally After that, concrete is placed on the inside of the wall mold and the slab mold to cure it.

Each of the dies is formed by connecting a plurality of rectangular plate panels called a dice panel. At this time, the dice panels constituting the slab dice are also called deck panels for distinguishing them from the wall dice panels. Hereinafter, A form panel is referred to as a "deck panel", and a plurality of deck panels arranged on the same plane in a dense arrangement is referred to as a "deck".

The construction of the wall and the slab starts with installing a mold, which is a kind of a mold that provides an inner space for filling the concrete by connecting the plurality of panels and a floor where concrete is laid, A wall formwork is installed on both sides of the wall so that the front faces are in close contact with each other. The front walls are closely attached to the opposite faces of the two walls, and the decks of the two wall molds, Are joined together at both ends thereof.

In the case of dismantling the conventional formwork installed as described above, it takes a long time to disassemble, and there is a high risk of a safety accident.

Fig. 1 shows a conventional structure of a wall form and a slab deck. Fig. 1 (a) is a perspective view, and Fig. 1 (b) is a side view.

As shown in the figure, in the conventional mold, two wall molds 1 whose front surfaces are opposed to each other are erected upright on the upper surface of a wooden foundation layer 2 or the like fixed on the floor A for constructing each wall W Both ends of a deck 3 for forming a slab at each upper end portion of one wall formwork of the two wall formworks 1 and one wall formwork of a wall structure (not shown) opposite to the rear wall form thereof are coupled Structure.

On the bottom surface of the deck 3, a plurality of joists 4 having a square cross section are in close contact with each other. A plurality of yokes 5, which are orthogonal to each other and parallel to each other, A plurality of supporters S3 stand up to the floor A and support the deck 3 along the bottom surface of each yoke 5 and are arranged parallel to the joist 4 along the upper end of the back surface of the wall formwork So that the deck 3 and the wall formwork 1 are connected to each other.

At this time, the two wall molds 1, which are separated from each other by the thickness of the wall W, face each other. The two wall molds 1, And both end portions of the form connection piece C protruding outward after dismantling the wall form 1 are cut off.

In order to prevent the form panels, which form each wall form, from being displaced from the initial assembling position by the pressure caused by the load of the concrete placed in the wall W for the installation of the wall W on each back surface of the wall form 1, The horizontal supports S1 and the wall vertical supports S2 are coupled.

Since the deck 3 is formed in the same shape as the upper plate of the bridge over the two piers, the both ends of the deck 3 are placed on the upper surfaces of the two wall molds whose back surfaces are opposed to each other. The structure is supported only by two wall molds.

Therefore, the above structure can not withstand the load of the concrete placed on the deck, and a large number of joists 4, yokes 5, and supporters S3 are formed between the bottom surface of the deck 3 and the bottom A Respectively.

In the case of a deck among the above formwork structures, it has been common to use wood plywood in the past. However, since the recyclability of the plywood is not only extremely low but also has a disadvantage that it is structurally weak, Deck panels with structures are gradually replacing plywood.

In the case of the deck panel, it is possible to systemize the slab formwork as compared with the plywood, so that the accuracy of the construction can be improved and the installation efficiency can be improved. In the formwork structure in which the slab formwork is structured systematically as disclosed in Korean Patent Publication No. 2004-42029 .

The above structure is characterized in that it is made of an "H" -shaped steel and is capable of supporting the deck panels by means of a bendable support bar to facilitate the disassembly of the slab form. However, in the case of the support bar applied thereto, If the supporting bar is bent downward after removing the supporter at the time of dismantling the formwork, since the support bar is bent and descended at a high speed due to the weight of the deck panels, there is no separate device for slowing the descent speed, have.

Therefore, in order to solve the above problem, Korean Patent Registration No. 723542 filed by the present applicant discloses a "mold supporter for slab construction ".

2 is a perspective view of a conventional form supporter for slab construction.

As shown in FIG. 1, the conventional slab-setting formwork supporter includes a support 6 placed on the floor and having a height adjusting means 6A coupled to the upper end thereof; A pipe-shaped fixing bar 7 coupled to an upper end portion of the height adjusting means 6A and having linear zigzag-shaped through holes H extending from the upper portion to the lower portion on both opposite side walls W1; A sliding bar (8) capable of reciprocating upward and downward with a lower end inserted into the fixing bar (7); A link (not shown) movably coupled to the lower end of the sliding bar 8; And a sliding rod 9 which is inserted through the link and has both ends thereof penetrating through the two through holes H of the fixing bar 7, respectively.

When the concrete is cured in a state in which the installation of the supporter is completed, the supporting member, which is in close contact with the slab form and the bottom surface thereof, is separated from the bottom of the slab by the supporter So that it is in close contact with the ceiling surface.

Therefore, by applying a force in the horizontal direction to the both ends of the sliding rod 9 which was located in the horizontal portion H2 formed at the upper end of the through hole H of the fixed bar 7 of the supporter, The weight of the slab die and the supporting member and the sliding bar 8 which are moved from the horizontal portion H2 of the hole H to the inclined portion H1 and are in close contact with each other in this order, The sliding rod 9 coupled to the lower end portion via the link slides along the inclined portion H1 of the through hole H and slides while gradually moving in a staggered manner from the upper portion of the fixed bar 7 toward the lower side do.

The sliding rod 9 stops at the lower end of the through hole H, and the supporting member and the slab formwork placed on the upper surface of the sufficiently low supporter sliding bar 8 can be easily disassembled.

However, the lowering speed of the sliding bar 8, which is lowered together with the downward movement of the sliding rod 9 due to the weight of the slab form or the like, together with the downward movement of the sliding bar 8 inside the fixed bar 7, The descending speed of the sliding bar may be increased according to the inclination of the through hole H serving as a moving orbit, thereby causing a safety accident.

The present invention has been made in order to solve the problems inherent in the prior art slab formwork supporter in which there is a possibility of a safety accident at the time of disassembling the slab form, The object of the present invention is to provide a form supporter for slab construction which can prevent a safety accident by delaying the descent slowly enough to gradually progress and can be easily disassembled after concrete curing and construction.

The above object of the present invention can be achieved by a sliding bar having a sliding bar movably coupled to an inner circumferential surface of a fixed bar, wherein a sliding bar-like opening for relative movement with a trapezoidal screw thread formed on an outer circumferential surface of the sliding bar is electrically or manually operated, And the sliding bar to be interlocked is gradually raised and lowered.

The supporter for slab construction according to the present invention is sufficiently slowed down so that the speed of descent due to the self weight of the plurality of technical panels and the support bars during the operation of the supporter for slab form dismantling is gradually reduced, There is an advantage that a safety accident in the descent process can be prevented in advance.

Then, the slab mold and then by the weight of the Tech isochronous supporter work for dismantling lowered to the lowest position, whereby the present invention supporter is a supporting bar eonhyeojin plurality of deck panel coupled to the upper sliding bar stably supported, the concrete curing and construction There is an advantage in that the work can be safely performed while disassembling a plurality of tech panels.

In addition, when the supporter for slab form dismantling is operated, the speed of descending by the self weight of the plurality of tech panels and the support bars is sufficiently slowed down so that the noise generation is minimized during the descent of the tech panel and support bar .

A mold supporter for slab construction according to the present invention comprises: a fixing bar having a tubular body and one end portion supported on a bottom surface; A sliding bar assembly having a seat ring coupled to the other end of the stationary bar, an operating ring rotatably stacked on the seat ring, a driven gear formed on an outer circumferential surface thereof, and an operating ring having an inner circumferential surface formed on an inner circumferential surface thereof; A sliding bar inserted into the inner circumferential surface of the fixed bar through a central through hole of the sliding bar machining hole and having a male screw formed on an outer circumferential surface of the sliding bar engaged with the female screw thread of the operating ring; And a driving gear coupled to the other end of the gear shaft, the one end of which is rotated by an electric drill, and includes a driving hole for rotating the driven gear engaged with the driving gear as the electric drill operates to raise and lower the sliding bar The components are as follows. The components are as follows.

The fixing bar of the form supporter for slab construction according to the present invention is a fixing support member provided at the lower end of a supporter installed on the bottom surface of a construction site where a wall mold panel and a deck panel are installed as a metal hollow tube body, A sliding bar operating member for guiding the sliding bar to be raised and lowered is mounted on an upper end portion of the sliding bar operating member, and a sliding member, which is raised and lowered by relative movement with a trapezoidal female threaded surface formed on the inner peripheral surface of the operating ring of the sliding bar operating member, The bar is guided and engaged in the through hole on the inner circumferential surface.

Particularly, it is preferable that the fixing bar of the form supporter for slab construction is made of aluminum or an aluminum alloy in consideration of a reduction in the overall load, and a plate fixing bar fixing plate is welded to the lower end of the fixing bar, It is preferable that the frame has a plurality of through holes for fastening the bolts to be fixed to the bottom surface and a through hole for connecting another fixing bar to the center at the center.

The sliding bar of the form supporter for slab construction according to the present invention is provided at the upper end of a supporter installed on the floor of a construction site where a wall formwork panel and a deck panel are installed as a hollow tube of metal material. And a top end portion of the support member is in close contact with the bottom surface of the deck panel mounting support member and is installed and fixed to the bottom surface of the panel.

Particularly, the trapezoidal male thread formed on the outer circumferential surface is raised and lowered by the relative movement with the trapezoidal female thread surface formed on the inner circumferential surface of the operating rod of the sliding bar operating member, so that the lowered sliding bar is guided and coupled through the through- .

Preferably, the sliding bar of the form supporter for slab construction is made of aluminum or an aluminum alloy in the same manner as the fixed bar in consideration of the overall load reduction, and a plate-like sliding bar fixing plate is welded to the upper end of the sliding bar. It is preferable that the frame has a plurality of through holes for fastening the bolts to be fixed to the floor surface and a through hole for connecting to the support member for mounting the deck panel at the center.

According to the present invention, there is provided a slide fastener of a form supporter for slab construction, comprising: an operating ring rotatably supported by a plurality of bearings provided on a seat ring supported by an upper end of a stationary bar, The rim portion is fitted to the upper end portion of the fixing bar, and the upper surface is provided with a bearing for supporting the axial load.

At this time, an operating ring is rotatably mounted on a bearing on the upper end of the seat ring, and the operating ring is rotated by power transmitted from the outside. A driven gear is formed on a lower end peripheral surface, The sliding bar is raised and lowered by the relative movement with the trapezoidal screw formed on the outer circumferential surface of the sliding bar in contact with the trapezoidal female thread formed on the inner circumferential surface of the operating ring as the operating ring of the sliding bar-

Particularly, since the operating ring of the present invention is downwardly supported by a plurality of bearings on the upper surface of the seat ring, the operating ring tends to be easily detached upward. To solve this problem, And the hook is selectively engaged with the hook support portion coupled to the outer peripheral surface of the upper end of the upper end of the fixed bar so that after the deck panel is completely dismantled, the hook is separated It is preferable to store them separately for each element constituting the supporter.

According to another aspect of the present invention, there is provided a drive socket for a mold supporter, the drive socket including a drive gear coupled to the other end of a gear shaft rotated by a power supplied from the outside, And a driving gear coupled to a driving shaft provided on one side of the upper end of the outer peripheral surface and coupled to a driving shaft end for rotating the driven gear of the driving ring.

That is, the shaft support rod of the hollow tube is coupled to one end of the support rod connection part of the driving shaft selectively coupled to the drive support shaft by the engagement pin, and the gear shaft supported at the upper and lower ends of the shaft support rod by the bearing, And a drive gear that is in contact with the driven gear is coupled to an upper end of the gear shaft.

Therefore, according to the driving gear constructed as described above, when the electric drill is operated after the electric drill, which is a separate power source, is inserted and coupled to the lower end of the gear shaft, driving is performed by the rotational force of the electric drill. Axis transfer -> rotation of the drive gear -> rotation of the driven gear -> rotation of the actuating ring -> operation of the sliding bar up and down.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a mold supporter for slab construction according to the present invention will be described with reference to the accompanying drawings.

FIG. 3 is a perspective view of a mold support for slab construction of the present invention, FIG. 4 is a partially enlarged view of FIG. 3, and FIG. 5 is an exploded perspective view showing a main structure of a mold support for slab construction of the present invention.

As shown in the drawings, the mold supporter for slab construction according to the present invention comprises: a fixed bar 10 having a fixed body 11 fixed to a floor at one end thereof; (26) coupled to the other end of the fixed bar (10), a bearing (be) stacked on the seat ring, a driven gear (24) formed on the outer circumferential surface thereof, (20) formed of an operating ring (21) formed with a sliding surface (G1); One end is inserted into the inner peripheral surface of the fixing bar 10 through the central through hole h of the sliding bar machining hole 20 and the other end of the sliding bar fixing plate is supported on the bottom surface of the deck supporting bar D, A sliding bar 30 in which the male thread G2 formed is engaged with the female thread G1 of the operating ring 21 to move up and down; And a drive gear 42 whose one end is coupled to the other end of a gear shaft 41 that is rotated by an electric drill D and which is driven by a driven gear 42 engaged with the drive gear 42 And a driving gear (40) for rotating the gear (24) and raising and lowering the sliding bar (30).

The hook support portion 12 and the drive handle support portion 13 are coupled to the outer circumferential surface of the other end of the fixing bar 10. The hook support portion 12 includes a hook 14a ' Is engaged with the engaging groove 23 formed on the upper outer circumferential surface of the driven gear 24 of the operating ring 21 and the driving gear support portion 13 is engaged with the engaging pin P And at least one manual operation hole 22 is provided so as to be able to manually rotate the operation ring 21 by inserting a separate 'I' -shaped tool T above the concave groove 23 do.

At this time, the driving tool 40 includes a supporting rod connecting part 44 coupled by the engaging pin P; A hollow shaft support rod 43 coupled to one side of the support rod connection part 44 in parallel with the fixed bar 10; A gear shaft 41 into which both ends are inserted so as to protrude from the inner peripheral surface of the shaft support rod 43; A driving gear (42) coupled to an upper end of the gear shaft (41) and engaged with the driven gear (24); And an electric drill (D) coupled to the lower end of the gear shaft (41) for rotating the gear shaft (41).

In the form supporter for slab construction of the present invention having the above-described structure, when the slide bar 30 is moved up and down according to the operation of the electric drill D,

The forward and reverse rotation of the electric drill D-> the forward and reverse rotation of the gear shaft 41-> the forward and reverse rotation of the drive gear 42-> the forward and reverse rotation of the driven gear 24- -> operation of the sliding bar 30 in the ascending / descending order.

Particularly, in the present invention, the bearing be superimposed on the seat ring 26 of the form supporter for slab construction is constructed by stacking a "thrust bearing" which is a bearing that loads the load along the axis This is because the weight including the concrete laid on the upper surface of the deck panel is preferably stuck along the vertical direction, that is, the axial direction, so that the operation ring 21 supporting the weight, (40) smoothly even in the state of being laminated on the base (26).

FIG. 6 is a side view showing a first stage of a slab form supporter supporting a slab formwork, and FIG. 7 is a side view showing an intermediate stage of dismantling a slab formwork supporter supporting the slab formwork.

As shown in the figure, concrete is placed on the upper side of the deck panel d, which is supported for the form support bar B installed horizontally, and between the form support bar B and the bottom surface A, The concrete support is cured by maintaining the sliding bar 30 in its fully raised state when the mold support for slab construction is installed (Figure 6)

Therefore, when the concrete curing is completed, the deck panel d supporting the concrete and the forming support bar B must be dismantled, so that the slab installation between the form supporting bar B and the bottom surface A The height of the die support must be lowered by rotating the electric drill D of the guide hole 40 to lower the sliding bar 30. (Figure 7)

When the sliding bar 30 is lowered to the lowest position as described above, a clearance is generated between the bottom surface of the slab in which the concrete is laid and the upper surface of the deck panel d, and the deck panel d and the die support bar B, Respectively.

FIG. 8 is a view showing a state in which the height of the form supporter for slab construction according to the present invention is lowered by manual operation.

The slab construction die of the present invention may be operated by the driving force according to the electric drill D as shown in FIG. 6 or FIG. 7, It is also possible to manually rotate the operation ring 21 by inserting a separate 'I' -shaped tool T into one or more manual operation holes 22 provided on the upper side.

Therefore, when the operation ring 21 is rotated forward or reverse after inserting a one-piece tool T into the manual operation hole 22, the female thread G1 formed on the inner peripheral surface of the operation ring 21 is rotated, When the sliding bar 30 is lowered to the lowest position, the bottom surface of the slab in which the concrete is laid is lowered And the upper surface of the deck panel (d), so that the deck panel (d) and the forming support bar (B) can be disassembled, respectively.

FIG. 1 shows a conventional structure of a wall structure and a slab deck,

   (A) is a perspective view, and (B) is a side view.

2 is a perspective view of a conventional form supporter for slab construction;

3 is a perspective view of a form supporter for slab construction according to the present invention.

Fig. 4 is a partially enlarged view of Fig. 3; Fig.

5 is an exploded perspective view showing a main structure of a form supporter for slab construction of the present invention.

6 is a side view showing the first stage of a formwork supporter for slab construction supporting a slab formwork.

7 is a side view showing an intermediate stage of disassembly of the form supporter for slab construction supporting the slab formwork.

8 is a view showing a state in which the height of the form supporter for slab construction according to the present invention is lowered by manual operation.

              Description of the Related Art

10: fixing bar 11: fixing bar fixing plate 12: hook supporting portion

13: a drive mechanism part 20: a sliding bar tooling 21: an operating ring

22: manual operation hole 23: concave groove 24: driven gear

25: protrusion 26: seat ring 30: sliding bar

31: Sliding bar fixing plate 40: Guide hole 41: Gear shaft

42: driving gear 43: shaft support rod 44:

Claims (5)

A fixed bar (10) having one end supported on a bottom surface as a tubular body; A stationary ring 26 coupled to the other end of the stationary bar 10, a rotatably stacked upper surface of the stationary ring 26, a driven gear 24 formed on the outer circumferential surface thereof, and a female thread G1 A sliding block opening 20 made up of a formed actuating ring 21; One end is inserted into the inner peripheral surface of the fixed bar 10 through the central through hole h of the sliding bar opening 20 and the male thread G2 formed on the outer peripheral surface is engaged with the female thread G1 of the operating ring 21. [ A sliding bar 30 for moving up and down; And a drive gear 42 whose one end is coupled to the other end of a gear shaft 41 that is rotated by an electric drill D and which is driven by a driven gear 42 engaged with the drive gear 42 And a driving hole (40) for rotating the gear (24) and raising / lowering the sliding bar (30). The method according to claim 1, The driving shaft 40 has a supporting rod connecting portion 44 coupled to the outer peripheral surface of the other end of the fixed bar 10 by the engaging pin P, A hollow shaft support rod 43 coupled to one side of the support rod connection part 44 in parallel with the fixed bar 10; A gear shaft 41 into which both ends are inserted so as to protrude from the inner peripheral surface of the shaft support rod 43; A driving gear (42) coupled to an upper end of the gear shaft (41) and engaged with the driven gear (24); And an electric drill (D) coupled to a lower end of the gear shaft (41) and rotating the gear shaft (41). The method according to claim 1, The sliding bar machining opening 20 is formed in such a manner that the engaging projection 14a of the hook 14 engaged with the hook supporting portion 12 provided on the outer peripheral surface adjacent to the other end of the other end of the fixed bar 10 is engaged with the driven gear 24 ) Is fixed to the concave groove (23) formed on the upper outer circumferential surface by being engaged with the concave groove (23). The method according to claim 1, Wherein the sliding bar machining opening (20) is provided with a plurality of manual operating holes (22) at the upper end of the operating ring (21). The method according to claim 1, And a bearing (be) is stacked on the upper side of the seating ring (26).

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