JP6158894B2 - Finishing method of concrete casting surface and top end setting device used therefor - Google Patents

Description

  The present invention relates to a method for finishing a concrete casting surface and a top end setting device used therefor.

  As a background art related to the present invention, a plurality of top end setting devices are arranged in a region where a concrete floor is to be placed, a long and narrow top end indicating member is provided between the arranged top end setting devices, and There is known a finishing method for a concrete placement surface in which a concrete is placed by holding a member at a reference height, and a leveling work is performed by a fixed tree along a top end indicating member (for example, a patent) Reference 1).

Japanese Utility Model Publication No.59-62144

  However, in such a conventional method for finishing a concrete placement surface, if the area of the concrete placement area becomes large, the number of top end setting devices to be placed in that area increases, and they are placed in an appropriate position. However, there is a problem that it is not easy to arrange (position) efficiently.

  The present invention has been made in consideration of such circumstances, and by easily connecting adjacent top end setting devices to each other with a connecting member having a predetermined length, a large number of top end setting devices can be easily positioned. Therefore, the present invention provides a method for efficiently finishing a concrete placing surface and a ceiling setting device used therefor.

  In the present invention, a pair of elongate top end indicating members lie along the ground in parallel with each other, and the height of each top end indicating member from the ground is set to a height corresponding to a desired concrete finish surface. The ready-mixed concrete is supplied onto the ground between the top end indicating members of the pair, and an elongated leveling member is passed from one of the pair of top end indicating members to the other, and the passed leveling member is placed in the longitudinal direction of the top end indicating member. The step of leveling the ready-mixed concrete by sliding on the end indicating member, and the step of setting the height of each top end indicating member from the ground includes a plurality of top end setting devices. And supporting on the ground, and connecting the two adjacent top end setting devices to each other with an elongated connecting member having a predetermined length to maintain a constant distance between the adjacent top end setting devices. Concrete placement characterized by It is intended to provide a finishing method.

  According to the present invention, since the two adjacent support members are connected to each other by an elongated connection member having a certain length, the top end setting device performs positioning of the connection member itself even if the number of the top end setting devices is large. The concrete placement surface can be instructed efficiently.

It is a top view of the top end setting device according to the present invention. It is AA arrow sectional drawing of FIG. It is BB arrow sectional drawing of FIG. It is a principal part side view of FIG. It is a perspective view of the top end setting apparatus shown in FIG. It is a top view which shows the installation state of the top end setting apparatus shown in FIG. It is setting operation explanatory drawing of the top end setting apparatus shown in FIG. It is a front view of the top end indicating member concerning this invention. It is a perspective view which shows the use condition of the top end setting apparatus shown in FIG. It is a top view which shows the installation state of the top end instruction | indication member and top end setting apparatus which are shown in FIG. 8 and FIG. It is explanatory drawing of the concrete placement process which concerns on this invention. It is explanatory drawing of the concrete placement process which concerns on this invention. It is explanatory drawing of the concrete placement process which concerns on this invention.

  In the method for finishing a concrete placing surface according to the present invention, a pair of elongate top end indicating members lie along the ground in parallel with each other, and the height of each top end indicating member from the ground corresponds to a desired concrete finished surface. Set the height, supply ready-mixed concrete on the ground between the pair of top end indicating members, pass an elongated leveling member from one of the pair of top end indicating members to the other, and pass the passed leveling member to the top It comprises a step of leveling the ready-mixed concrete by sliding on the top end indicating member in the longitudinal direction of the end indicating member.

  The step of setting the height of each top end indicating member from the ground supports each top end indicating member on the ground using a plurality of top end setting devices, and two adjacent top end setting devices. It is characterized by comprising a step of maintaining a constant distance between adjacent top end setting devices by connecting them with an elongated connecting member having a constant length.

  The desired concrete finish surface may be a surface inclined with respect to a horizontal plane.

  This invention provides the top end setting apparatus used for the finishing method of the said concrete casting surface from another viewpoint.

  The top end setting device preferably includes a groove or a hole for inserting the end of the connection member, and the connection member is preferably a rod-shaped member or a band-shaped member.

  The top end setting device may include a holding member that holds the top end indicating member, and an adjustment member that is coupled to the holding member and adjusts the height of the holding member from the ground.

  The adjustment member may include a female screw portion and a male screw portion that is screwed into the female screw portion, thereby adjusting the height.

  The adjustment member includes a columnar member that supports the holding portion from below and has a male screw portion on the outer periphery, and a support base that has a female screw portion that engages with the male screw portion in the center. It is preferable that the end portion is provided with four grooves that can be fitted in the cross direction in parallel to the ground, and a through hole for a bolt that fixes the support base to the ground is provided between two adjacent grooves.

  Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. This does not limit the invention.

  1 is a top view of the top end setting device according to the present invention, FIG. 2 is a cross-sectional view taken along the line AA in FIG. 1, FIG. 3 is a cross-sectional view taken along the line BB in FIG. 5 is a perspective view of the top end setting device, FIG. 6 is a top view showing the installation state of the top end setting device, FIG. 7 is an explanatory diagram of the setting operation of the top end setting device, and FIG. FIG. 9 is a perspective view showing the use state of the top end setting device, FIG. 10 is a top view showing the installation state of the top end indicating member and the top end setting device, and FIGS. It is explanatory drawing of an installation process.

[Configuration of top end setting device, connecting member and top end indicating member]
As shown in FIGS. 1 and 2, the top end setting device 1 adjusts the holding member 2 for holding the top end indicating member 10 shown in FIG. 8 and the height of the holding member 2 from the ground 13. And a member 3.

  The adjustment member 3 includes a column member 4 and a support base 5, and the column member 4 includes a male screw portion 4a formed on the outer periphery. The support base 5 is formed of a disk-shaped member having a truncated cone portion that protrudes coaxially in the center, and the truncated cone portion includes a female screw portion 5a that passes through the axis. The cylindrical member 4 and the support base 5 are coupled so as to be movable in the vertical direction when the male screw portion 4a is screwed into the female screw portion 5a. Further, the support base 5 includes four through holes 6 through which fixing bolts 8 (FIG. 5) for fixing the adjustment member 3 to the ground 13 are passed. The cylindrical member 4 includes a groove 4b for engaging a tool (screwdriver) at the upper end thereof.

  As shown in FIG. 8, the holding member 2 shown in FIG. 3 includes a holding groove 2 a for holding the two top end indicating members 10 in abutment and holding them horizontally, and the holding member 2 is arranged at the upper end of the cylindrical member 4. A fixing screw 2b for fixing the fitted holding member 2 to the upper end of the cylindrical member 4 is provided on the side surface.

  The disk-shaped portion of the support base 5 has four fitting grooves 5b extending radially from the truncated cone portion at an angle of 90 degrees, and the four through holes 6 for the fixing bolts 8 are adjacent to each other. Each is formed between two grooves 5b (see FIG. 5).

  Each groove 5b has two windows 5c at the groove bottom, and two pairs of protrusions 5d on opposite side walls. As will be described later, when the end of the connecting member 7 is pushed in from above the groove 5b, the connecting member 7 is held by the groove bottom of the groove 5b and the protruding portion 5d on the opposite side wall as shown in FIG. It is designed to be fitted inside. As shown in FIG. 5, one top end setting device 1 can fix the end of the connecting member 7 from a maximum of four directions (cross directions).

The material and dimensions of each component used in this embodiment are as follows, but are not limited thereto.
As shown in FIG. 8, the top end indicating member 10 is made of a strip-shaped steel material having a length L = 2498 mm, a width W = 32 mm, and a plate thickness 4.0 mm.
The connecting member 7 is made of a rod-shaped steel material having an outer diameter of 10 mm and a length of 2460 mm.

Further, a steel material screw of M12 (metric screw having an outer diameter of 12 mm) is used as the cylindrical member 4 by cutting it into a predetermined length.
The holding groove 2a of the holding member 2 has a length M of 60 mm (FIG. 4), a depth D of 20 mm (FIG. 2), and a width E of 4.5 mm (FIG. 2).
Moreover, the holding member 2 and the support base 5 are created by machining or molding a polyethylene (PE) material.
The fixing bolt 8 uses M16 woodworking screws (iron), and the fixing screw 2b uses M4 cross-recessed round small screws (iron).
A hole may be formed instead of the groove 5a of the support base 5, and the tip of the connection member 7 may be inserted into the hole and fixed.

[Concrete casting surface instruction method]
Next, a method for instructing a concrete placing surface (top end) using the top end setting device 1, the connecting member 7, and the top end indicating member 10 having such a configuration will be described.

First, as shown in FIGS. 5 and 6, a plurality of top end setting devices 1 are installed on the ground.
Next, one end of the connecting member 7 is pushed into and fixed to one groove 5b of two adjacent top end setting devices 1, and the other end of the connecting member 7 is pushed into the groove 5b of the other top end setting device 1. Fix it. Sequentially, this procedure is repeated to connect all the top end setting devices 1 to each other from the cross direction by the connecting members 7 (FIG. 6). Thereby, each top end setting device 1 is accurately positioned at a pitch P = 2.5 m.

  Next, as shown in FIG. 5, each top end setting device 1 is fixed to the ground using fixing bolts 8. Next, as shown in FIG. 7, a laser detector 9 is installed on the holding member 2 of each top end setting device 1, and a laser beam LB indicating a reference top end height is irradiated to the laser detector 9.

  The operator manually rotates the cylindrical member 4 (diameter 12 mm) clockwise or counterclockwise about the axis so that the laser beam LB is received at a predetermined position of the laser detector 9, and the male screw portion 4a and female The height of the holding member 2 is adjusted by a screwing action with the screw portion 5a.

When the height adjustment of all the holding members 2 is completed, the top end indicating member 10 shown in FIG. 8 is then held by the two adjacent top end setting devices 1 as shown in FIGS. It is suspended between the members 2 and the holding member 2 is fixed to the cylindrical member 4 with a fixing screw 2b. As a result, as shown in FIG. 10, all the top end indicating members 10 are arranged at a pitch P = 2.5 m and indicate a desired top end height.

[Finishing surface finishing method]
Next, a method for finishing the concrete placement surface using the top end indicating member 10 set in this way will be described.
First, as shown in FIG. 11, the ready-mixed concrete 11 is supplied until the top end indicating member 10 is hidden on the ground 13.

  Next, as shown in FIGS. 12 and 13, the operator places the leveling plate (length 3 m) 12a of the leveling tool 12 on the two top end indicating members 10 arranged in parallel. It passes in the direction orthogonal, and pulls the handle 12b provided at a right angle in the center of the leveling plate 12a in the direction of the arrow (FIGS. 12 and 13).

  As a result, the leveling plate 12a slides on the top end indicating member 10, so that the ready-mixed concrete 11 is uniformly leveled to the height indicated by the top end indicating member 10, and the placed concrete surface has a high accuracy. Finished uniformly.

  In this embodiment, as shown in FIG. 7, each laser detector 9 is irradiated with a laser beam LB in the horizontal direction so that the concrete finish surface becomes horizontal. If a laser beam tilted by an angle of 5 to 1 degree is used, the top end indicating member 10 is set to tilt at that angle with respect to the horizontal.

  Therefore, the surface of the ready-mixed concrete 11 is finished to have the inclination. This is very effective for finishing concrete placing surfaces such as rooftops of buildings that require drainage gradients and food factory floors.

  In addition, a vibrator (vibration device) is mounted on the leveling plate 12a of the leveling tool (dragonfly) 12 shown in FIGS. 12 and 13, and the leveling plate 13a is several tens in the direction orthogonal to the concrete placement surface. By applying a slight vibration of up to several hundred Hz, the leveling plate 12a can be smoothly slid on the top end indicating member 10 with a smaller pulling force.

DESCRIPTION OF SYMBOLS 1 Top end setting apparatus 2 Holding member 2a Holding groove 2b Fixing screw 2c Hole 3 Adjustment member 4 Column member 4a Male thread part 4b Groove 5 Support stand 5a Female thread part 5b Groove 5c Window 5d Projection part 6 Through hole 7 Connection member 8 Fixation Bolt 9 Laser detector 10 Top end indicating member 11 Ready-mixed concrete 12 Dragonfly 12a Leveling plate 12b Handle 13 Ground

Claims (3)

A pair of elongate top end indicating members lie along the ground in parallel with each other, and the height of each top end indicating member from the ground is set to a height corresponding to a desired concrete finish surface. Supply ready-mixed concrete on the ground between the members, pass a long and thin leveling member from one of the pair of top end indicating members to the other, and pass the leveled member on the top end indicating member in the longitudinal direction of the top end indicating member And the step of setting the height of each top end indicating member from the ground includes the step of leveling the ready-mixed concrete with the plurality of top end setting devices on the ground. while supporting the, it becomes a spacing crest setting device adjacent connected to each other between two adjacent crest setting device with an elongated connecting member having a predetermined length from a fixed holding to step, the crest setting device Holds the top end indicating member A holding member, and an adjustment member that is coupled to the holding member and adjusts the height of the holding member from the ground. The adjusting member supports the holding member from below, a first screw portion, and a first screw portion and a screw. and a support base having a second threaded portion for engagement, the support base is concrete, characterized in Rukoto provided with four grooves or holes of the end portion can be fitted parallel to the cross direction to the ground of the coupling member Surface finishing method.   The method of claim 1, wherein the desired concrete finish surface is a surface inclined with respect to a horizontal plane. A plurality of elongate top end indicating members are supported along the ground by a plurality of top end setting devices, and adjacent two top end setting devices are connected to each other by an elongate connection member having a fixed length. A top end setting device for use in a method of setting the height of each top end indicating member from the ground while maintaining a constant interval between setting devices, the holding member holding the top end indicating member, and the holding member And an adjustment member that adjusts the height of the holding member from the ground. The adjustment member includes a first screw portion that supports the holding member from below, and a second screw portion that is screwed to the first screw portion. and a support base having said support base is the connecting member of the end crest setting device Ru provided with four grooves or holes in parallel as possible fit the cross direction ground to.

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