JPH0333367A - Leveling device for concrete floor - Google Patents

Abstract

PURPOSE:To make it possible to execute with high degree of accuracy without requiring skill by traveling sections connected to the ends of a trowel on guide frames extended in parallel with each other, and traveling the trowel. CONSTITUTION:Traveling section 7 and 7 capable of traveling are provided on guide frames 16 and 16 extended in parallel with each other at a specific interval. After that, the ends of a supporting frame 5 supporting a trowel 3 extended between both guide frames 16 and 16 are connected to the traveling sections 7 and 7. In addition, height regulating sections provided to the ends of the trowel 3 are controlled by a control section 39 to regulate the trowel 3 in a desired height. The traveling sections 7 and 7 are traveled on the guide frame 16 and 16 to travel the trowel 3 while keeping it in a desired height, and a concrete floor is automatically leveled.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a concrete floor leveling device.

(Prior Art) In the construction of concrete floor surfaces, the work performed before the concrete hardens is conventionally performed as follows.

First, reinforcing bars are assembled in a formwork that constitutes a floor surface, and concrete is poured into the formwork from a flexible hose or the like, or concrete is poured into a recess or the like corresponding to the floor surface.

Next, fill and compact concrete with a vibrator or the like as necessary.

Next, the worker performs rough leveling work while adjusting the amount of excess or shortage of concrete using a leveling jig.

Finally, the worker levels the floor surface, and uses a ruler rod to level the top of the floor and perform other work such as leveling the ruler and correcting the gaps.

(Problem to be solved by the invention) This conventional method requires highly skilled workers, especially for the work after leveling, so if the floor area is large, it is difficult to secure a large number of skilled workers. In addition to this, there are other problems such as variations in finishing accuracy depending on the worker even if the worker is a skilled worker, and there are also problems such as the work taking a long time.

The present invention has been devised in view of the above-mentioned circumstances, and an object of the present invention is to reduce the number of skilled workers and shorten the construction time, without requiring skill, and without causing variations. To provide a concrete floor leveling device capable of maintaining high finishing accuracy and obtaining a good roughness condition.

(Means for Solving the Problems) The structure of the present invention for achieving the above object will be described with reference to drawings corresponding to embodiments.

The present invention provides a guide frame 16 extending parallel to each other at a predetermined interval, a soldering iron 3 of a predetermined length extending between the guide frames 16, and a soldering iron 3 connected to both ends of the soldering iron 3, respectively. The soldering iron 3 runs on the guide frame 3.
a running section 7 for moving the tAill, two height adjustment sections provided at both ends of the iron 3 and for individually moving up and down both sides of the iron 3; It is characterized by comprising a control section 39 that drives the height to a desired height.

(Operation → The guide frame 16 is installed at a predetermined height, and the running section 7 is moved on this guide frame 16 to move the iron 3. Furthermore, the height adjustment section and the control section 39 move the iron 3.
Since the concrete floor surface is automatically leveled while adjusting the height at both ends individually, it is possible to reduce the number of workers and shorten construction time.Furthermore, the height of the floor surface and finishing accuracy are highly accurate. If it can be maintained, a good overhang state can be obtained without causing variations.

In this case, if two trowels 3 are provided at intervals in a direction substantially perpendicular to the longitudinal direction of the trowels 3, the leveling work of the concrete floor surface can be performed more efficiently.

Furthermore, by applying vibration to the iron 3, it is possible to further improve efficiency and finish accuracy.

(Example) Hereinafter, a concrete floor leveling device according to the present invention will be described with reference to the drawings.

Fig. 1 is a plan view of the concrete floor leveling device, Fig. 2 is a front view thereof, and Fig. 3 is a side view thereof.

l is a concrete floor leveling device, leveling device 1
includes two front and rear irons 3 having a predetermined length, a support frame 5 that supports these two irons 3, and a running section 7 that allows the support frame 5 to run.

In the example, plate materials B are placed at intervals corresponding to the length of the trowel 3 in i1 at a concrete placement location A consisting of reinforcing bars, base material, etc.
is erected, and concrete C is placed between the two plates B to form a concrete floor surface in the longitudinal direction of the plates B.

The running portions 7 are provided at both left and right ends of the support frame 5, respectively.

Each running section 7 has wheels 11. It consists of a traveling frame 13 that supports the wheels 11, a motor 15 that drives the wheels 11, and the like.

The wheels 11 are provided at the front and rear of the lower part of the running frame 13, respectively.

Each wheel 11 is placed in engagement with a guide frame 16 (a square steel tube, a round steel tube, etc. can be used) installed on the outside of the plate material B.

A motor 15 that drives the wheels 11 is disposed between the front and rear wheels 11, and a speed reducer 17 is connected to the motor 15.

Rotation of the wheel 11 is performed via a chain 21 that is passed between the drive sprocket 17A attached to the output shaft of the reducer 17, the sprocket IIA attached to the wheel 11, and the tension sprocket 19, and is connected to the guide frame 1.
The device 1 travels by rotating the wheels 11 on the device 6.

The running frame 13 includes front and rear leg bodies 23, 23 that project upward from front and rear wheel support portions, respectively.

Each leg 23 has an upper leg 71! I (23A and lower leg 23B
The upper leg portions 23A are connected by a connecting plate 25.

A male threaded member 23E is rotatably and axially immovably supported inside the upper leg portion 23A, and a lower portion of the male threaded member 23H is engaged with a screw hole of a female threaded member 23F fixed inside the lower leg portion 23B. The upper leg portion 23A is rotated by the male screw member 23E.
The connecting plate 25 is configured to move up and down.

The rotation of the externally threaded member 23E is achieved by attaching a motor 27 to the connecting plate 25, and using a pulley 27A on the output shaft of this motor 27, a pulley 23C attached to the upper part of each wire threaded member 23H, and a rotation between these pulleys 27A and 23C. Therefore, in the embodiment, these male threaded members 23E, female threaded members 23F, motor 27,
The pulleys 27A, 23C, belt 29, etc. constitute a height adjustment section.

The support frame 5 includes a main pipe 31 installed between the left and right connecting plates 25, and brackets 31A are welded to appropriate locations on the main pipe 31.

The main pipe 31 has a flange 31 at its longitudinally intermediate portion.
B, and the length can be adjusted by adding a desired length of pipe material between the flanges 31B.

The iron 3 is disposed below the main pipe 31 so as to be located at the other two vertices of an isosceles triangle having the main pipe 31 as its apex.

A plurality of connecting members 33 are installed obliquely between each of the brackets 31A and the front and rear irons 3, and as shown in FIG. 4, the front and rear irons 3 are connected by an arcuate connecting member 35.

Therefore, in the embodiment, the support frame 5 that supports the iron 3 includes the main pipe 31, the connecting member 33°35, and the iron 3.
The iron 3 also serves as a part of the support frame 5.

Level sensors 37 are installed at both left and right ends of the main pipe 31, respectively.
is installed upright, and a control section 39 is provided at an appropriate location on the main pipe 31. The level sensor 37 receives, for example, a signal from a laser emitter installed at an appropriate location around the floor,
Based on this signal, the control unit 39 drives the motor 27 while correcting the current height of the trowel 3, and when leveling the concrete floor surface, the trowel 3 This is to adjust the height.

Further, a shaft 43 is rotatably disposed between the connecting members 35 via a bearing 41, and this shaft 43 is rotated via a belt/boot mechanism 49 by a motor 47 supported by a bracket 45 at the left end.

Then, at multiple locations spaced apart in the longitudinal direction of the shaft 43,
A weight 5 having a center of gravity at a location displaced from the center of the shaft 43
A plurality of irons 1 are attached, vibration is generated by the rotation of the shaft 43, and this vibration is transmitted to the front and rear irons 3 via the connecting member 35.

Of the two irons 3, the front iron 3A in the moving direction (arrow direction) has a horizontal surface portion 3A-1 and a predetermined length behind the front edge of the horizontal surface portion 3A-1, as shown in FIG. In the embodiment, an elevated surface portion 3A-2 is provided that rises from the rear end of the horizontal surface portion 3A-1.

Further, the rear soldering iron 3B in the moving direction includes a horizontal surface portion 3B-1 and an vertical surface portion 3B-2 rising from the front and rear intermediate portions of the horizontal surface portion 3B-1. It is constructed using a trowel member bent into a shape.
The front and rear iron members have the same shape but are used in different directions. Further, each iron 3 is constructed by connecting two iron members by a flange 3E at the intermediate portion in the longitudinal direction,
The length can be adjusted by adding a trowel member of a desired length between the flanges 3E. In addition, the soldering iron 3B at the rear in the moving direction uses two soldering iron members back to back, and in this case, the horizontal surface portion 3B is
-1 is configured.

Note that 53 in the figure is a roller used when moving the device 1 in the longitudinal direction of the iron 3.

FIG. 5 shows a block diagram of the control section 39.

The control unit 39 is composed of a microcomputer, and includes a CPU (central processing unit f) 39a having calculation and control functions.
and a driving motor 15. a read-only ROM 39b that stores a processing program for controlling the height adjustment motor 27 and the iron vibration motor 47 and other data;
A readable and writable RAM 39c that stores calculation results from the CPU 39a and data from human-powered devices, an input interface 39d, and an output interface 39.
e, and these are connected to the CPU via a bus 39f.
39a.

The input interface 39d includes a level sensor 37 that detects laser light from a reference level laser emitter 60 and a receiver 61 that receives an operation signal of the leveling device l.
is connected. Further, a transmitter 62 for transmitting operation signals for the leveling device 1 is provided corresponding to the receiver 61, and an operation section 63 equipped with switches, push buttons, etc. is connected to this transmitter 62. .

Further, the output interface 39e is connected to the motor 15 via the respective drivers 15a, 27a, and 47a.
, 27 and 47 are connected to each other, and furthermore, a height display device 64
is connected.

In the control section 39, when an operation start switch (not shown) on the operation section 63 is turned on, a command signal corresponding to this switch is transmitted through the transmitter 62. This transmission signal is received by the receiver 61, and the input interface 39d issues a start command to the driver 15a based on the driving start command signal.

47a, thereby starting each motor 15, 47.

On the other hand, the level sensor 37 receives the laser beam emitted from the laser emitter 60 and detects the respective current levels at both ends of the leveling device 1 with respect to the laser emitter 60. This detection level data is input to the input interface 39d.
At the same time, each motor 2
7 to control the height of the iron 3 to the reference height. Note that when the start command is received by the CPU 39a, the driver 27a of the motor 27 is maintained in an enabled state.

Next, the operation of the leveling device 1 will be explained.

First, level sensor 37. The iron 3 via the motor 27 etc.
is set to a predetermined height, and the shaft 43 is set by the motor 47.
Rotate and vibrate iron 3.

Then, the concrete C is placed in front of the leveling device 1, and the worker moves forward (in the direction of the arrow) while adjusting the amount of excess or deficiency of the concrete C with the leveling jig.
is driven to move the leveling fill forward.

In this case, the height of the iron 3 is determined by the level sensor 37 and the control unit 3.
9. It is maintained at a predetermined height via a motor 27 or the like, and details of this height control will be explained with reference to FIGS. 5 and 6.

With the initial setting of the control section 39, the flowchart shown in FIG. 6 starts.

First, in step S2, the motor 2 is adjusted by operating a manual height adjustment switch (not shown) on the operating section 63.
7 to set the height of the iron 3 to the desired height.

The operation command signal at this time is transmitted to the driver 27a through the traffic light 62, the receiver 61, and the control section 39.

In the next step S2, the laser emitter 60 is set toward the level sensor 37 of the leveling device, and the level sensor 37 detects the laser beam at this time. This detected value is stored in the RAM 39c as the initial ra (reference value) of the iron 3 whose height has been set (step S3).

In the next step S4, level control is started based on the operation of the operating section 63, and in the next step S5, the operation of the leveling device 1 is started.

When the leveling device 1 is operated, the process proceeds to step S6, in which the detected value of the level sensor 37 detected by receiving the laser beam is read into the CPU 39a at a predetermined calculation cycle as the current iron level value, and the primary In step S7, the difference between the current iron level value and a preset initial value is calculated.

In step S8, the deviation which is the calculation result is D; 0, that is, the current height of the iron 3 is equal to the initial value, D>O, that is, the current height of the iron 3 is greater than the initial value, or D
<O, that is, it is determined whether the current height of the iron 3 is smaller than the initial value.

Here, if it is determined that D=0, the process returns to step S6.

If it is determined that D<0, the process proceeds to step S9, where the rotation angle of the motor 27 is calculated and set according to the deviation between the current height of the iron 3 and the initial value.

Then, in the next step S6O, the motor 27 is driven in the direction in which the iron 3 rises, and in the first step S6l, it is determined from the rotation angle whether the rise has been completed. Here rNO
When J, the process returns to step S10, and steps S6O and S
Execute the process of ll. Further, when it is determined as rYESJ, the process returns to step S6.

On the other hand, if it is determined in step S6 that D>O, the process proceeds to step S12, where the rotation angle of the motor 27 is calculated and set according to the deviation between the current height of the iron 3 and the initial value.

Then, in the next step S13, the motor 27 is driven in the direction in which the iron 3 descends, and in the first step 514, it is determined from the rotation angle whether the descending is completed. Here rNO
If J, the process returns to step 513, and steps S13 and S
14 processes are executed. If rYESJ is determined, the process returns to step S6 and the height of the soldering iron 3 is read again.

The above operation is performed in the same way at both ends of the iron 3, and the height at both ends of the iron 3 is individually set to the initial value.
By doing so, the height of the iron 3 is maintained constant.

As the leveling device 1 moves, as shown in FIG.
is scraped off to a predetermined height. Further, the scraped off excess concrete C is pushed forward by the elevated surface portion 3A-2.

Then, the scraped concrete surface contacts the horizontal surface portion 3B-1 of the trowel 3B at the rear in the moving direction, and
-1, the concrete surface is pressed down and a flat concrete floor surface with good overhang is obtained.

Therefore, according to this embodiment, the leveling work of the concrete floor surface is automatically performed with high accuracy, reducing the number of workers and shortening the construction time. High accuracy can be maintained and variations in finishing accuracy can be prevented.

In addition, in the example, vibration is applied to the iron 3, which further increases the efficiency of leveling work, and finishing accuracy can be further improved by changing the vibration frequency and running speed according to changes in slump, etc. can.

Next, another embodiment of the iron 3 will be described.

FIG. 7 is a sectional view of the soldering iron 3, and FIG. 8 is a side view of the soldering iron 3 in its installed state.

In this embodiment, the iron 3 has a horizontal surface portion 3A-5, an elevated surface portion 3A-6 rising from the horizontal surface portion 3A-5, and an elevated surface portion 3A.
-6 and a bent surface portion 3A-7 that is bent obliquely upward. The irons 3 having the same shape are attached to the front and rear of the connecting member 35 in different directions.

According to this embodiment, in the iron 3 at the front in the moving direction,
As shown in FIG. 7, the scraped concrete C can be pushed forward more efficiently by the vertical surface portion 3A-6 and the bent surface portion 3A-7.

In addition, in the trowel 3 at the rear in the moving direction, the vertical surface portion 3A-6 is located at the front edge of the horizontal surface portion 3A-5, so the scraped concrete surface is smoothly leveled via the vertical surface 13A-6. Contacting the surface portion 3A-5 and pressing by the horizontal surface portions 3A-5 can perform the work more efficiently.

Furthermore, if the trowel 3 shown in FIGS. 1 to 4 and FIGS. 7 and 8 is used, the leveling work can be performed in the same way even if the device I is run in the direction opposite to the arrow. Leveling of the concrete floor surface can be performed in each reciprocating process.

Furthermore, as shown in FIG. 9, the soldering iron 3 at the rear in the moving direction has an vertical surface portion 3 extending from the front edge of the horizontal surface portion 3A-8 in the moving direction.
A-9 may be formed by standing up diagonally.

In addition, in the example, the concrete C is
I scraped it off and pressed it with trowel 3 at the back, but
The method of leveling the concrete C using the trowel 3 is arbitrary.

That is, the cross-sectional shape of the soldering iron 3 and the number of soldering irons 3 are arbitrary, and the number of soldering irons 3 may be one, and the shape of the soldering iron 3 is not limited to a linear shape, for example.

The guide frame 16 may be bent into a letter shape in a plan view, the front and rear shapes may be different, or the guide frame 16 may be arranged at an angle rather than perpendicular to the guide frame 16.

Furthermore, the present invention can level the slope surface by making the heights of both ends of the trowel different, and by making the shape of the trowel 3 U-shaped etc. It is also applicable to

Further, in the embodiment, the case where the guide frame 16 is used has been described, but if the area where the wheels 11 are transferred is leveled to some extent, or if it is flat from the beginning, the guide frame 16 may not be used. good.

(Effects of the Invention) As is clear from the above explanation, the concrete floor leveling device according to the present invention can reduce the number of skilled workers and shorten the construction time. Furthermore, it is possible to maintain high finishing accuracy without causing variations, and to obtain a good undercut condition.

[Brief explanation of drawings]

Figure 1 is a plan view of the concrete floor leveling device, Figure 2 is its front view, Figure 3 is its side view, Figure 4 is a side view of the support frame, and Figure 5 is the control unit. Block diagram, Figure 6 is a flowchart for adjusting the height of the iron, Figure 7 is a side view of another embodiment of the iron, Figure 8 is a side view of the support frame to which the same iron is attached, Figure 9 is a side view of the iron at the rear in the moving direction. In the figure, 1 is a concrete floor leveling device, 3 is a trowel, and 5 is a concrete floor leveling device.
7 is a support frame, 7 is a running section, II is a wheel, 13 is a running frame, and 39 is a control section.

Claims (3)

[Claims] (1) A guide frame extending parallel to each other at a predetermined interval, a soldering iron having a predetermined length extending between the two guide frames, and a soldering iron connected to both ends of the iron, respectively, on the guide frame. a running part that moves the iron by traveling on the iron; two height adjustment parts that are provided on both ends of the iron and individually move up and down both ends of the iron; A device for leveling a concrete floor surface, comprising: a control unit that is driven to achieve a desired height; (2) The concrete floor leveling device according to claim 1, wherein two of the trowels are provided at intervals in a direction substantially perpendicular to the longitudinal direction of the trowel. (3) The concrete floor leveling device according to claim 1, further comprising a vibrating device that vibrates the trowel.