JPH0222832B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a slab concrete pouring device and its device, in which a formwork support for pouring is combined with a cart to support it, and is carried to a pouring point and installed. The shoring is fixed in place, and the shoring can be quickly removed for reuse after concrete is poured.

Traditionally, when pouring slab concrete, a formwork supported by a number of columns is placed at the pouring point, the lengths of the columns are adjusted and the columns are fixed, and concrete is poured into the formwork. Ta. In this case, the work of supporting the formwork with pillars and fixing the pillars on site was complicated, so shoring systems were developed that integrated the formwork and pillars, and wheels were also rotatably attached to the pillars. Summer. Since the formwork support assembly assembled in this manner can run via wheels to just below the point where concrete is to be poured, it is easy to transport it to the point where concrete is to be poured. In addition, after separating the formwork from the poured and solidified concrete by several millimeters to separate the edges from the concrete, the shoring assembly can be moved horizontally from the pouring point via wheels and discharged. By using this type of shoring, repeated pouring of concrete slabs can be done quickly. However, this type of shoring with wheels can be used efficiently for structures in which concrete slabs are poured horizontally one after another, but in earthquake-prone countries like Japan, buildings require fairly thick beams to maintain their strength. In this case, the shoring on which the slab concrete will be poured must be lowered to a height where the formwork does not touch the bottom edge of the beam before it can be transported to the placement site. Furthermore, even after pouring, the formwork support assembly cannot be removed from the pouring point unless the support is lowered until the formwork is lower than the bottom edge of the beam. The above-mentioned shoring assembly is one in which the formwork is supported by struts, and jacks are generally attached to the lower ends of the struts, and it is possible to lengthen or shorten the length of the struts by several mm. It is impossible to make the pillars longer or shorter by several tens of millimeters, such as the thickness of the beams, without changing the structure of the pillars. Furthermore, even if the support is provided with a mechanism that can easily lengthen or shorten the support, the structure of the support becomes more complicated. In addition, it is not easy to change the length of the struts supporting the formwork to be longer or shorter all at once while maintaining the mounting attitude of the formwork at the site, if the formwork remains in the above-mentioned attitude. Therefore, it is inconvenient to repeatedly transport the developed shoring assembly to and from the site when placing slab concrete for a building with deeply hanging beams.

The present inventor has developed a cart that can lift and support the support consisting of the formwork and supports, which can adjust the length of the support pillars supporting the formwork and fix it at the adjusted position, at the slab concrete placement position. If you move the shoring structure to the right, you will be able to move the shoring without having to install wheels on the support. In order for the trolley to support the shoring work in such a way that it can be raised and lowered, the trolley must be equipped with a table that can be raised and lowered.If this table supports the shoring work, the table can be supported in a low position and carried to the work site, and the table can be lifted up at the work site. Based on the suggestion that if the length of the support is increased and the support is fixed to the floor in that state, the formwork will be in a horizontal state at a predetermined height, and concrete can be poured on top of the formwork. The present invention has been made. The main point of the present invention is to provide a formwork support for slabs, which comprises a formwork, at least a pair of supports that support the formwork, and a sliding rod that moves relative to the supports and holds the supports. A movable cart with an elevating table is moved between the supports, the table is raised to lift and support the shoring, and the cart is moved to the original concrete placement point, where the formwork reaches a predetermined height. The present invention provides a method for placing slab concrete in the formwork, which comprises raising the table to a maximum height and fixing the support by fixing the support and the sliding rod. When using this method, even if the truck is under the shoring,
Concrete can be placed even after moving from that location. In addition, after the concrete is poured, the trolley moves under the shoring and performs the opposite operation to the above-mentioned operation, i.e.,
If you raise the table to the shoring receiving position, catch the shoring that has separated from the concrete with the table, and lower the table while shortening the length of the support, you can move the shoring under the beam without hitting the bottom of the beam. The trolley can be ejected from the work site through the

The present invention also relates to an apparatus for carrying out the above-mentioned method, which comprises a formwork, at least a pair of supports supporting the formwork, the sheath tubes being fixedly arranged in parallel at the bottom of the formwork, and at least a pair of struts that are fixedly fitted into the sheath tubes. A formwork support for slabs consisting of a sliding rod that holds the supports so that the height of the formwork can be adjusted by adjusting the height of the formwork, and has means for finely adjusting the length; and a table that supports the support so that it can be raised and lowered. It is also a slab concrete placement device that consists of a combination with an attached trolley. An embodiment of the present invention will be described in detail below with reference to the drawings.

A large number of formworks 1 are fixed in parallel on and intersecting with the joists 2, and the joists are supported by C-shaped members 3, 3a arranged intersectingly below them, and each C-shaped member is supported by a support 4. , 4a. Sheath pipes (cylindrical pipes) 5, 5a are fixed and arranged in parallel outward at the lower end of each strut,
Sliding rods 6, 6a are slidably fitted into the sheath tube. A plurality of pin holes are bored in the sliding rod. When the pins are inserted into the pin holes 7, 7a and the lower ends of the sheath tubes 5, 5a are in contact with the pins and supported, the formwork 1,... is raised via the supports 4, 4a as shown in Fig. 1. Indicates a stopped state. Further, when the pin inserted into the pin hole 7 hits the upper end of the sheath tube 5, this is the state shown in FIG. 2 when the formwork is being raised and lowered, and this will be described later. The lower end of each sliding rod is the base 9, 9a, and the upper part following the base has jacks 8, 8a, and by operating the jacks, the length of the sliding rod can be finely adjusted. You can also finely adjust the height. Reference numerals 10 and 10a are holding pieces that slightly protrude inwardly below the pillars and are supported by the table of the cart, which will be described later. Reference numerals 11 and 11a are hojyo connecting the center of the joist and the support near the holding piece. These members form the movable support of the present invention.

On the other hand, the trolley used in the present invention has a table 14 mounted movably up and down on an underframe 13 having two wheels 12, 12a on both sides, and the distance between the outer edges of the wheels on both sides is the distance between the supports 4, 4a. Within the distance, the distance between the outer edges of the table is also within the distance between the support columns 4, 4a, and the length is such that both ends abut the holding pieces 10, 10a, respectively. The table 14 is pivoted 17 approximately at the center of each other, and has a pair of crossed arms 15, 16 that are pivoted 18, 19 on the same side of the underframe and the table, respectively, and whose other ends are in sliding contact with the table and the underframe, respectively. It is mounted on the underframe so that it can be raised and lowered. The mechanism for raising and lowering the table is such that the arm 16 is pushed along the underframe by hydraulic or other electric power, and this pushing moves the lower end of the arm 16 from the position shown in FIG. 1 along the underframe 13. and move it to the left, the fifth
As shown in the figure, the table 14 is lowered to approach the underframe, and conversely, if it is moved to the right along the underframe 13 from the position shown in FIG. 2, the table rises to the position shown in FIG. 1.
However, the mechanism described here is merely an example, and other mechanisms may be used as long as the table can be raised vertically and horizontally with respect to the underframe.

Next, concrete slab pouring will be described using an apparatus consisting of a combination of a form support and a truck according to the present invention. First, pull out the pins from the pin holes 7, 7a and lower the formwork shoring to get the state shown in Figure 2. In this state, insert the pins into the pin holes 7, 7a that appear at the top of the sheath pipes 5, 5a. . The pin hole into which the pin is inserted is not necessarily limited to the pin hole from which the pin was first removed, but may be any one of the multiple pin holes provided along the sliding rods 6, 6a that appears on the sheath tube. Just choose one. The cart with the table 14a lowered enters between the supports of the shoring that is waiting in this state, and when the table is raised and the holding pieces 10, 10a are lifted at both ends of the table, the cart supports the main body of the shoring. , a sliding rod 6 is also supported by the sheath tube 5. In this lowered state, the upper side of the formwork 1 is the beam 20.
Since the position can be lower than the lower side 21 of the beam, the cart carrying the shoring can be moved to the casting position by passing under the beam. After moving to the pouring position and stopping the cart, when the pin is removed from the pin hole, the sliding rods 6, 6a
is lowered and the bases 9, 9a hit the floor. When the table 14 is raised, the shoring body leaves the sliding rod as it is and is raised by the same distance as the table's lifting distance, and the formwork 1 is raised to a position almost suitable for pouring. In this state, the pin is inserted into the pin hole under the sheath tubes 5, 5a and engaged with the lower edge of the sheath tube. Shojatsuki 8,8
Adjust a appropriately to make fine adjustments so that the formwork takes the optimal position. In this state, slab concrete 22 is placed on the formwork. This casting can be done either by placing the cart under the shoring and supporting it, or by lowering the table and releasing the support from the cart, or by releasing the support from the cart and driving the cart. You may perform this after discharging it from the installed position. After the poured concrete has solidified, the cart is moved again under the formwork support, the table 14 is raised, and the holding piece 1
While supporting the shoring with 0,10a, insert the pin into the sheath pipe 5,
5a from the bottom, and the formwork is peeled off from the concrete while supporting the shoring on the cart. After cutting the edges of the formwork and concrete, lower the table and lower the shoring, and at the appropriate lowering position insert the pin into the sliding rod at the top of the sheath pipes 5, 5a, engage with the upper edge of the sheath pipe, and slide. Load the shoring integrated with the rods and move the cart to the next concrete placement position.

Since the present invention uses a shoring structure that supports the formwork with posts that are equipped with sliding rods that can be moved relative to each other and fixed, the vertical distance of the shoring structure can be increased. Since the cart is moved by being supported by a table that moves up and down on the cart, the upper side of the formwork of the shoring can be lowered and moved even in places where beams or window frames are stretched downward. Therefore, it is possible to move the shoring to the pouring point and install the shoring, or to remove the shoring from the concrete while it is still on the cart after pouring the concrete, lower the height of the formwork, and quickly move it to the next pouring position. It can also be easily moved to another location to prepare for repeated pouring. In addition, when raising and lowering the shoring itself, the pin inserted into the pin hole of the sliding rod that fits into the sheath tube is inserted into the sheath tube when the sheath tube and the sliding rod are fastened in parallel on the outside of the support. Since this type of device engages with the upper edge and is supported by the table, and engages with the lower edge and is erected at the casting position, it has traditionally been difficult to drill the sheath tube and the sliding rod. There is no need to worry about aligning the holes when inserting the pins. It also helps increase the efficiency of shoring installation.

[Brief explanation of drawings]

Figure 1 is an elevation view showing the formwork support raised on a trolley to the slab concrete placement position;
FIG. 2 is a one-sided elevational view showing the formwork support supported on a trolley in a low position during movement. 1: Formwork, 2: Joist, 3, 3a: C-shape, 4,
4a: strut, 5, 5a: sheath pipe, 6, 6a: sliding rod, 7, 7a: pin, 8, 8a: jack, 9,
9a: Base, 10, 10a: Holding piece, 13: Underframe, 14: Table, 15, 16: Arm, 1
7, 18, 19: Pivot points.

Claims (1)

[Claims] 1. A formwork, at least a pair of supports for supporting the formwork,
A cart with an elevating table is moved between the pillars of a slab formwork support consisting of a sliding rod that moves relative to each support pillar to hold the support, and the support is lifted and supported by the table. Then, move the trolley to the concrete pouring point, raise the table until the formwork reaches a predetermined height at that point, fix the supports and sliding rods, fix the shoring, and remove the formwork. Method of pouring slab concrete on top. 2 a formwork and at least a pair of formwork support columns;
A cart with an elevating table is moved between the pillars of a slab formwork support consisting of a sliding rod that moves relative to each support pillar to hold the support, and the support is lifted and supported by the table. Then, move the cart to the initial point of concrete pouring, raise the table until the formwork reaches a predetermined height at that point, and fix the shoring by fixing the pillars and sliding rods, The table is moved away from the shoring, the cart is discharged from the initial point, and concrete is poured onto the formwork. After the concrete solidifies, the cart is moved again to the initial point, and the table is raised and released from the concrete. The shoring is supported on the table, the table is lowered, and the cart supporting the shoring is repeatedly discharged from the original casting point in order to carry the shoring to another casting point. How to place slab concrete. 3. A formwork, at least a pair of supports supporting the formwork with sheath pipes fixedly arranged in parallel at the bottom thereof, and holding the support posts so as to be able to be fixedly fitted into the sheath pipes to adjust the height of the formwork. A slab concrete placing device that can be repeatedly operated, which is a combination of a formwork support for slabs made of sliding rods, and a cart with a table that supports the support in a vertically movable manner using an elevating table. 4. The concrete pouring device according to claim 3, wherein an inwardly directed holding piece is protruded from the support column so as to be supported by an elevating table. 5 The sheath tubes are arranged in parallel on the outside of the strut at the bottom of the strut, the sliding rod has a plurality of pin insertion holes bored in the length direction, and the pin inserted into the sliding rod is inserted into the upper part of the sheath tube. The concrete placing device according to claim 3, which engages with the edge or the lower edge. 6. The concrete pouring device according to claim 3 or 5, wherein the sliding rod is provided with a jack for finely adjusting the length at the lower part thereof.