JP7425517B1 - Treatment equipment for concrete surface treatment and method of concrete surface treatment - Google Patents

Abstract

The present invention provides a technology that facilitates surface treatment of concrete before drying. SOLUTION: A treatment device is used for surface treatment of concrete before drying. The processing device includes a roller to be placed on the concrete before drying, a main body to which the roller is attached to the bottom and is equipped with a drive unit for rotationally driving the roller, and a front and rear part of the roller. At least one of the iron parts has a trowel part attached to the main body part so that an edge can come into contact with the surface of the concrete before drying, and a trowel part extending obliquely upward toward the rear from the main body part, A handle portion is provided at the upper end with a grip portion that is gripped by an operator. [Selection diagram] Figure 1

Description

The technology of the present disclosure relates to a treatment apparatus for surface treatment of concrete and a method of surface treatment of concrete.

For example, when constructing a concrete floor surface such as a dirt floor or carport, the surface of the concrete that has been poured before drying is usually smoothed and leveled, and the laitance formed on the surface is removed. Surface treatment is performed. In general, this surface treatment is performed manually by an operator using a wooden trowel or metal trowel, or by using a device called a "trowell", for example, as disclosed in Patent Document 1 below. It's been a long time since I've been in the middle of a long time.

Japanese Patent Application Publication No. 2007-100426

However, the method of performing surface treatment manually as described above places a heavy burden on the workers' bodies, and it is difficult to secure workers with the skills to ensure the quality of the finished product. was there. In addition, in methods that use mechanical equipment such as Trowel, when the construction area is small, such as the dirt floor of a general house, the floor of a carport, or a dog run, it is difficult to transport such mechanical equipment to the construction site or to carry it to the construction site. In some cases, it became difficult to manage mechanical equipment within the facility. In addition, since the trowel is configured to rotate a member equivalent to a trowel along the surface of the concrete to be treated, the laitance spreads due to the rotation of the member, and it may not be possible to remove it sufficiently. Therefore, after the work with Trowell, the laitance was sometimes removed manually using a trowel.

The purpose of the present application is to provide a technology that can facilitate surface treatment of concrete before drying when placing a concrete floor surface.

The technology of the present disclosure can be realized as the following form.

[First form] The first form is provided as a treatment device used for surface treatment of concrete before drying. The processing device of the first form includes a roller disposed on the concrete before drying, a main body portion to which the roller is attached to the bottom and is equipped with a drive unit that rotationally drives the roller, a trowel portion attached to the main body portion such that an edge thereof can come into contact with the surface of the concrete before drying on at least one of the front and rear sides; and a trowel portion extending diagonally upward toward the rear from the main body portion. It has a handle part which protrudes and has a grip part provided at the upper end to be gripped by an operator.
According to the processing device of the first embodiment, the surface of the concrete before drying can be easily smoothed and laitance removed by the pressure and friction of the rollers and the sliding of the edge of the trowel. Furthermore, according to the processing device of the first embodiment, the worker can operate the roller and the trowel unit integrally through the handle part while in a standing position, even when the work area is small. , its handling can be done easily. Therefore, by using the treatment apparatus of the first embodiment, the surface treatment of concrete before drying can be efficiently carried out, and the burden on the worker can also be reduced.

[Second Embodiment] In the processing apparatus according to the first embodiment, the iron portion may be provided both in front and behind the roller.
According to the processing device of the second form, since the trowel portion is provided on both the front side and the rear side of the roller, the sliding trowel portion is used to move the roller both when moving the roller forward and when moving it backward. The movement can be followed. Therefore, it is possible to more efficiently smoothen the surface of concrete before drying.

[Third Embodiment] In the processing device according to the second embodiment, when the gripping portion is lifted upward, the front side of the main body portion is tilted downward with the roller as a fulcrum, and the edge of the front iron portion is tilted downward. is in contact with the surface of the concrete before drying, and by lowering the gripping portion downward, the rear side of the main body tilts downward with the roller as a fulcrum, and the edge of the rear trowel portion It may be configured to contact the surface of concrete before drying.
According to the processing device of the third embodiment, the operator can easily control the contact state of the front trowel section and the rear trowel section with the concrete surface by swinging the main body section using the roller as a fulcrum via the grip section. can be adjusted to Therefore, the surface treatment of concrete before drying by the treatment device can be further facilitated.

[Fourth form] In the processing apparatus according to any one of the first form, second form, and third form, the height and inclination angle of the iron part with respect to the main body part can be adjusted. and may be connected to the main body portion.
According to the processing device of the fourth embodiment, the operator can more easily adjust the contact state of the edge of the trowel portion with the surface of the concrete according to the state of the concrete.

[Fifth form] In the processing apparatus according to any one of the first form, second form, third form, and fourth form, the drive unit may rotate the roller in a forward direction and a backward direction. The gripping portion may be provided with an operating portion that allows the operator to operate the rotational direction of the roller.
According to the processing device of the fifth embodiment, the operator can switch the rotational direction of the roller using the operating unit at hand, thereby improving the operability and maneuverability of the processing device. Therefore, the surface treatment of concrete before drying can be performed even more efficiently.

[Sixth Embodiment] The sixth embodiment is provided as a treatment device used for surface treatment of concrete before drying. A processing device according to a sixth embodiment includes: a roller disposed on the concrete before drying; a main body portion on which the roller is attached to the bottom and a driving portion for rotationally driving the roller; The trowel may be provided with a trowel portion attached to the main body portion such that an edge portion thereof can come into contact with the surface of the concrete before drying at at least one of the front and rear sides.
According to the processing device of the sixth embodiment, the surface of the concrete before drying can be smoothed and laitance can be easily removed by the pressure and friction of the rollers and the sliding of the edge of the trowel.

[Seventh Embodiment] The seventh embodiment is provided as a method for surface treatment of concrete before drying. The method of the seventh embodiment includes: (a) using the rotational driving force as a propulsive force; or (b) causing the roller rotating by the rotational driving force transmitted from the drive unit to idle by the rotational driving force; a step of moving the plate-shaped trowel portion with its side surface in contact with the surface of the concrete before drying; and a step of causing the plate-shaped trowel portion to follow the roller with its edge portion in contact with the surface of the concrete before drying. and a step of moving it.
According to the method of the seventh embodiment, the surface of the concrete before drying can be easily smoothed and laitance can be easily removed by the pressure and friction by the rollers and the sliding of the edge of the trowel.

The technology of the present disclosure is not limited to the configurations of the processing apparatus and method described above, and can be realized in various forms. The technology of the present disclosure may be realized, for example, in a form in which a part of the structure such as the handle portion is omitted, or in a form in which a part of the structure is replaced by a structure that performs the same function.

FIG. 1 is a schematic perspective view showing a worker operating the processing device of the first embodiment. FIG. 3 is a schematic perspective view of the main body of the processing device as viewed from above. FIG. 3 is a schematic perspective view of the main body of the processing device as viewed from below. FIG. 3 is a schematic side view of the main body of the processing device when viewed from the side. FIG. 2 is a schematic diagram showing an operation unit of the processing device. An explanatory diagram showing the flow of the concrete placement process. Schematic cross-sectional view of the construction site after the concrete layer has been formed. The first schematic diagram for explaining the surface treatment method. The second schematic diagram for explaining the surface treatment method. FIG. 2 is a schematic diagram showing a processing device according to a second embodiment.

1. First embodiment:
FIG. 1 is a schematic perspective view schematically showing how an operator OP is operating the processing device 10 of the first embodiment.

FIG. 1 shows arrows indicating an X direction, a Y direction, and a Z direction, which are directions based on the processing device 10 and are orthogonal to each other. The X direction corresponds to the width direction of the processing device 10, that is, the left-right direction. The Y direction corresponds to the front-rear direction of the processing device 10. The Z direction corresponds to the height direction of the processing device 10, that is, the vertical direction. Hereinafter, in this specification, when referring to "right", "left", "front", and "rear" with respect to the processing device 10, the terms "right", "left", "front", and "rear" are basically used as viewed from the operator OP who is using the processing device 10. It means the direction. Furthermore, when we say "up" and "down", we mean directions based on the direction of gravity. Arrows indicating the X direction, the Y direction, and the Z direction are appropriately illustrated in each figure referred to later so as to correspond to FIG. 1.

The processing device 10 is used for surface treatment for smoothing and leveling the surface of concrete before drying and removing laitance in a concrete floor pouring process. The concrete placement process procedure and laitance will be discussed later.

The processing device 10 includes a main body part 15 provided with a roller 12 and a trowel part 13 at the bottom for surface treatment of concrete, and a handle part 16 for the operator OP to handle the main body part 15. has. Details of the configuration of the main body portion 15 will be described later.

The handle portion 16 includes a connecting shaft portion 17 that extends rearward and diagonally upward from the main body portion 15, and a grip portion 18 provided at the upper end of the connecting shaft portion 17. The connecting shaft portion 17 is formed of, for example, a straight bar-shaped metal member. As shown in FIG. 3 to be referred to later, the connecting shaft portion 17 is connected to a lower portion on the back side of the main body portion 15 with its angle relative to the main body portion 15 being fixed.

The grip portion 18 is constituted by a rod-shaped portion extending left and right from the upper end of the connecting shaft portion 17 . The operator OP can grip the grip part 18 with each of the left and right hands. In this embodiment, the grip section 18 is provided with an operation section 40 for the operator OP to operate the drive of the roller 12 of the main body section 15 . Details of the operation unit 40 will be described later.

In surface treatment of concrete before drying using the treatment device 10, the operator OP stands behind the main body 15, holds the grip part 18 of the handle part 16 in a standing posture, and operates the main body 15. It is done by doing. A specific method of operating the treatment apparatus 10 for surface treatment of concrete before drying will be described later.

The details of the configuration of the processing device 10 will be described with reference to FIGS. 2, 3, and 4. FIG. 2 is a schematic perspective view of the main body 15 of the processing device 10 when viewed diagonally from above, and FIG. 3 is a schematic perspective view of the main body 15 when viewed diagonally from below. FIG. 4 is a schematic side view showing the right side of the main body 15. As shown in FIG.

The main body section 15 has a substantially rectangular parallelepiped shape with long sides in the left-right direction, and includes a hollow housing section 20 that is open at the bottom. The housing section 20 is composed of a plurality of frame members 21 forming a skeleton thereof, and a plurality of cover members 22 stretched between the frame members 21.

The frame member 21 and the cover member 22 are made of metal such as aluminum or stainless steel, for example. The frame member 21 and the cover member 22 may be made of a material other than metal, for example, a resin member such as plastic, CFRP, or the like. The cover member 22 may be omitted.

A cylindrical roller 12 is attached to the bottom of the main body 15. The roller 12 is installed in the lower opening of the housing section 20. The roller 12 is held by the main body 15 in a rotatable state about its central axis as a rotation axis. When the treatment device 10 is in use, the rollers 12 are placed on the concrete before drying and support the body portion 15.

The roller 12 is arranged at the center of the bottom of the main body 15 in the Y direction. The central axis direction of the roller 12 coincides with the X direction. The length of the roller 12 in the X direction may be slightly shorter than the width of the main body portion 15, for example, about 20 to 80 cm. The diameter of the roller 12 may be, for example, about 3 to 30 cm. Further, the length of the roller 12 may be, for example, about 30 to 80 cm.

In this embodiment, the roller 12 is made of a metal cylindrical member. The roller 12 may be made of a member other than metal, for example, may be made of resin. The side surface of the roller 12 in contact with the concrete surface is configured to be smooth. Preferably, the side edges of the roller 12 are rounded. Thereby, it is possible to prevent streak-like traces from remaining on the surface of the concrete before drying after the roller 12 moves.

In this embodiment, the roller 12 is configured to be detachable from the main body portion 15. This facilitates replacement of the roller 12. Furthermore, by removing the rollers 12 from the main body portion 15 after using the processing device 10, the rollers 12 can be easily cleaned.

See FIG. 4. A drive unit 25 that rotationally drives the roller 12 is mounted on the main body 15 . The drive unit 25 includes a motor 26 that generates rotational driving force, and a transmission mechanism 27 that transmits the rotational driving force from the motor 26 to the roller 12.

The motor 26 is arranged in the area above the roller 12 within the housing section 20 . The motor 26 is configured by, for example, a DC brushless motor. The rated output of the motor 26 may be, for example, about 30 to 100W. In this embodiment, the motor 26 can be driven at a rotational speed ranging from at least 0 to 100 rpm.

The transmission mechanism 27 is provided at a side of the motor 26 and the roller 12. The transmission mechanism 27 has a function as a speed reducer that reduces the rotational speed generated by the motor 26 and outputs torque to the roller 12 according to the reduction ratio. The transmission mechanism 27 includes a timing belt 27b for transmitting rotational driving force from the motor 26 to the roller 12. In this embodiment, the timing belt 27b is housed in a case provided on the side surface of the housing section 20. In other embodiments, for example, a chain may be used instead of the timing belt 27b.

The main body section 15 further includes a control unit 28 and a power supply section 29. The control unit 28 is housed in the casing 20 and is connected to the motor 26 and the power source 29 through wiring (not shown). Further, the control unit 28 can be connected to an operation section 40, which will be described later, by wireless communication such as Bluetooth (registered trademark). The control unit 28 may be connected to the operating section 40 by wire.

The control unit 28 includes a control circuit that controls power supplied from the power supply section 29 to the motor 26, a control circuit that controls rotational drive of the motor 26, and a control circuit that controls communication with the operation section 40. . The control unit 28 controls the rotational drive of the roller 12 by controlling the rotational drive of the motor 26 in accordance with the operation of the operating unit 40 by the operator OP.

In the present embodiment, the control unit 28 controls the drive unit 25 in accordance with the operator's operation received via the operation unit 40 to change the direction of rotation of the roller 12 by the rotational driving force of the motor 26 as shown in FIG. Switching between the forward direction indicated by arrow F and the backward direction indicated by arrow R. Further, the control unit 28 controls the rotation of the motor 26 and the rotational speed of the roller 12 according to the operator's operation received via the operation unit 40 .

The power supply section 29 is provided on the upper surface of the housing section 20. The power supply section 29 is constituted by a storage battery that can be repeatedly charged and discharged, such as a lithium ion battery, for example. In this embodiment, the power supply section 29 is configured by two storage batteries. If the power supply unit 29 is configured with a storage battery, a power cord for connecting to an external power source can be omitted, so that the handling of the processing device 10 can be improved.

The power supply section 29 is configured to be detachable from the main body section 15 . As described above, the power supply section 29 is provided on the top surface of the housing section 20, so that it is easily accessible by the operator OP and can be easily attached and detached.

As described above, the soldering iron part 13 is provided at the bottom of the main body part 15. Although the details will be described later, in the surface treatment of concrete using the treatment device 10, the surface of the concrete is smoothed by rubbing the surface of the concrete before drying with the edge 13e of the trowel portion 13 following the movement of the roller 12. become

In this embodiment, the iron part 13 is installed at intervals with respect to the roller 12 both in front and behind the roller 12. Below, the soldering iron part 13 provided on the front side of the roller 12 is also referred to as a "front soldering part 13f", and the soldering iron part 13 provided on the rear side of the roller 12 is also referred to as a "rear soldering iron part 13r". In addition, hereinafter, when there is no need to particularly distinguish between the front soldering iron part 13f and the rear soldering iron part 13r, they will be collectively referred to as "the soldering iron part 13."

In this embodiment, the soldering iron part 13 is constituted by a flat plate member having a substantially rectangular plate surface. Preferably, the soldering iron part 13 is configured to be bent by elastic deformation. It is preferable that the soldering iron part 13 is made of a thin plate of stainless steel (registered trademark), which has a high rust prevention effect and high strength, for example.

The length of the iron part 13 is preferably greater than the length of the roller 12. The length of the soldering iron part 13 in the Y direction may be, for example, about 1 to 15 cm. The thickness of the soldering iron portion 13 may be, for example, approximately 0.1 to 3.0 mm. In this embodiment, the front soldering iron part 13f and the rear soldering iron part 13r have approximately the same shape and approximately the same dimensions. In other embodiments, the front soldering iron part 13f and the rear soldering iron part 13r may have different shapes or different dimensions.

The soldering iron part 13 is attached to the main body part 15 with its plate surface facing in the vertical direction and the edge part 13e forming the long side thereof being arranged along the roller 12. The front soldering iron part 13f is held on the main body part 15 by connecting a connecting part 32 provided on the front surface of the main body part 15 to a fixing part 31 provided on the upper surface thereof. The rear soldering iron part 13r is held on the main body part 15 by connecting a connecting part 32 provided on the back surface of the main body part 15 to a fixing part 31 provided on the upper surface thereof.

The front trowel part 13f has an edge 13e forming a long side of the front side that can come into contact with the surface of the concrete before drying when the main body part 15 is tilted with the roller 12 as a fulcrum so that its front side is lowered. . The rear trowel portion 13r has an edge portion 13e forming a long side of the rear side that can come into contact with the surface of the concrete before drying when the main body portion 15 is tilted so that the rear side thereof is lowered with the roller 12 as a fulcrum. be.

The connecting portion 32 that holds the aforementioned iron portion 13 on the main body portion 15 is configured such that the height position and inclination angle of the iron portion 13 in the main body portion 15 can be adjusted. The connecting portion 32 includes a pair of sliding members 33, a pair of holding portions 34, and a pair of swinging portions 35.

The pair of slide members 33 are constituted by linear, elongated plate-like members, and are arranged in parallel with each other in the width direction, and are arranged along the up-down direction. The upper ends of each of the pair of slide members 33 are connected by a connecting bar 33b extending in the X direction.

The pair of slide members 33 are held by a pair of holding parts 34 provided on the outside of the housing section 20. The pair of holding parts 34 are configured by rectangular frame-shaped members. The pair of slide members 33 are inserted and held within the frames of the pair of holding parts 34 fixed to the main body part 15.

A pair of swinging parts 35 are connected to the lower ends of the pair of slide members 33 so as to be swingable in the Y direction. The iron part 13 is connected to the lower ends of a pair of swing parts 35 via a fixing part 31 provided on its upper surface.

The holding portion 34 is provided with a first fastening member 36 . The first fastening member 36 is attached to be able to tighten the holding portion 34 and the slide member 33. By tightening the first fastening member 36, the slide member 33 is fixed to the holding portion 34. When the first fastening member 36 is loosened, linear movement of the slide member 33 with respect to the holding portion 34 is allowed. The operator OP loosens the first fastening member 36 and moves the slide member 33 in the vertical direction to adjust the height position of the iron part 13 in the main body part 15, as shown by arrow H in FIG. Is possible.

A second fastening member 37 is provided on the swinging portion 35 . By tightening the second fastening member 37, the swinging of the swinging portion 35 with respect to the slide member 33 can be restricted. The operator OP loosens the second fastening member 37 and swings the swinging part 35 with respect to the slide member 33, thereby tilting the soldering iron part 13 with respect to the main body part 15, as shown by arrow S in FIG. It is possible to adjust the angle. In FIG. 4, the soldering iron part 13 whose inclination angle has been changed is shown by a broken line.

As described above, according to the processing device 10 of the present embodiment, the operator OP can adjust the height position and inclination angle of the soldering iron part 13 in the main body part 15 by loosening the first fastening member 36 and the second fastening member 37. and can be adjusted arbitrarily. This allows the operator OP to easily adjust the contact state of the edge 13e of the trowel portion 13 with the concrete surface as desired, depending on the concrete condition such as hardness and moisture content, for example. Can be done. Therefore, the quality of the finished surface treatment of concrete can be easily improved.

The fixed part 31 is connected to the lower end of the swinging part 35 by fastening with a third fastening member 38. By loosening the third fastening member 38, the iron portion 13 can be easily removed from the swinging portion 35. Thereby, in the processing device 10, the iron part 13 can be easily replaced. Moreover, the iron part 13 can be easily removed and cleaned after using the processing apparatus 10.

FIG. 5 is a schematic diagram showing an example of the operation unit 40 of the processing device 10. As shown in FIG. The operation unit 40 receives an operation by the operator OP, and transmits a signal representing the content of the operation to the control unit 28. The operation section 40 includes an operation panel 41 provided at the center of the grip section 18 and a drive switch section 45 attached to the grip section 18 .

The operation panel 41 is provided with a main power button 42 and a plurality of speed adjustment buttons 43. The operator OP can turn on/off the power of the processing device 10 by pressing the main power button 42. The plurality of speed adjustment buttons 43 are arranged in a line. The operator OP can change the rotational speed of the roller 12 by selecting and pressing one of the plurality of speed adjustment buttons 43 that corresponds to a desired rotational speed. In this embodiment, the rotational speed of the roller 12 can be switched between high speed, medium speed, and low speed.

The drive switch section 45 is provided at a position where the operator OP can operate it with the thumb of the hand holding the grip section 18 . The drive switch section 45 includes a forward switch 46 and a backward switch 47. While the operator OP continues to press the forward switch 46, the motor 26 continues to generate rotational driving force that rotates the roller 12 in the forward direction. Conversely, while the operator OP continues to press the backward switch 47, the motor 26 continues to generate the rotational driving force that rotates the roller 12 in the backward direction. When the operator OP is not operating the drive switch section 45, the motor 26 is in a standby state in which rotational drive is stopped.

See FIG. 2. In this embodiment, in addition to the main power button 42 of the operation section 40, an emergency drive stop button 49 is provided on the top surface of the main body section 15, next to the power supply section 29. When the operator OP becomes unable to stop the drive of the processing device 10 by operating the operation unit 40, the worker OP forcibly stops the drive of the processing device 10 by pressing the emergency drive stop button 49. can be done.

The concrete placing process will be explained with reference to FIGS. 6 and 7. FIG. 6 is a process flow diagram of the concrete placing process. FIG. 7 is a schematic cross-sectional view of the construction site after the concrete layer CL is formed. In FIG. 7, a state in which the processing device 10 is placed on the concrete layer CL is illustrated.

In step S10, the worker OP forms a crushed stone layer SL that covers the entire construction site by laying crushed stones on the base layer BL, which is the soil layer at the surface of the construction site. The crushed stone layer SL is formed with a thickness of, for example, about 5 to 15 cm.

In step S20, the worker OP installs a formwork that surrounds and partitions an area into which concrete will be poured, in order to prevent concrete from flowing into unnecessary areas. In step S30, the worker OP installs the reinforcing bar member RF on the crushed stone layer SL in the formwork. The reinforcing steel member RF is composed of, for example, a wire mesh in which wires are assembled in a lattice shape. The reinforcing steel member RF constitutes the internal skeleton of the concrete layer CL, and suppresses cracks in the concrete after solidification.

In step S40, the worker OP pours fresh concrete into the formwork to form a concrete layer CL containing the reinforcing steel members RF therein. The concrete layer CL is formed to have a thickness of, for example, about 5 to 15 cm.

Here, the water inside the concrete usually rises to the surface of the concrete before drying as time passes after pouring. This phenomenon, or the water that rises due to this phenomenon, is also called "bleeding water." On the surface of concrete before it dries, "laitance", which is a thin layer of fine particles of cement and aggregate in the concrete that have floated up with this bleeding water, may be formed.

If concrete hardens without sufficient removal of laitance, cracks may occur in the surface layer of the concrete and the appearance of the concrete may be impaired. Additionally, if new concrete is poured over concrete that has hardened without sufficient removal of laitance, the laitance formed on the surface of the old concrete at the bottom will inhibit the bonding with the new concrete at the top. This may be the cause. Therefore, in the subsequent step S50, the processing apparatus 10 is used to perform surface treatment to remove laitance while smoothing the surface of the concrete layer CL before drying.

In step S50, the operator OP places the main body part 15 of the processing device 10 on the concrete layer CL before drying, and operates the main body part 15 via the handle part 16 to remove the concrete layer CL before drying. Perform surface treatment. The method of operating the processing device 10 in step S50 will be explained after the next step S60 is explained.

In step S60, the operator OP removes the processing device 10 from above the concrete layer CL and waits until the concrete dries. After the concrete has dried, the worker OP performs finishing work such as removing the formwork and making features on the concrete. Through the above steps, the concrete placing process is completed.

The method of operating the processing device 10 in step S50 will be described with reference to FIGS. 8 and 9. As described above, the processing device 10 tilts the main body 15 using the roller 12 as a fulcrum, so that either the edge 13e of the front trowel section 13f or the edge 13e of the rear trowel section 13r is coated with concrete before drying. It can be brought into contact with the surface. Below, examples of an operating method for performing surface treatment using the front iron section 13f and an operation method for performing surface treatment using the rear iron section 13r will be described in order.

FIG. 8 is a schematic diagram for explaining the first and second operating methods using the front iron part 13f. By lifting the handle portion 16 upward, the operator OP can tilt the front side of the main body portion 15 downward using the roller 12 as a fulcrum, and bring the edge 13e of the front trowel portion 13f into contact with the concrete surface.

In the first operating method, the motor 26 rotates the roller 12 in the backward direction indicated by the solid arrow R with the edge 13e of the front trowel portion 13f in contact with the concrete surface, and the rotational driving force of the motor 26 is applied. The main body portion 15 is moved rearward as a propulsive force. Thereby, the surface of the concrete before drying can be pressed by the roller 12, and the surface of the concrete can be rubbed by the edge 13e of the front trowel section 13f that moves following the roller 12. Therefore, the surface of concrete can be easily smoothed and laitance can be effectively removed.

In the second operation method, with the edge 13e of the front trowel portion 13f in contact with the concrete surface, the roller 12, which is rotationally driven by the motor 26, is rotated idly while being in contact with the concrete surface. The section 15 is moved backward. Here, "making the roller 12 idle" refers to a state in which the roller 12, which is rotationally driven by the motor 26, is moved at a moving speed different from the circumferential speed of the rotational drive, and slides on the surface of the concrete. means.

To idle the roller 12, the roller 12 may be rotated by the motor 26 in the forward direction indicated by the dashed arrow F, and the main body 15 may be pulled and moved rearward via the handle portion 16. Alternatively, with the motor 26 rotating the roller 12 in the backward direction indicated by the solid arrow R, the main body 15 is pulled via the handle 16 so that the circumferential speed of the roller 12 is faster than the rotational driving force of the motor 26. The main body portion 15 may be moved rearward at a speed.

According to the second operating method, while the surface of the concrete is roughened by the friction of the roller 12, the surface of the concrete is smoothed and laitance is removed by the sliding of the edge 13e of the succeeding front trowel part 13f. be able to. Therefore, when the concrete is hard, the surface of the concrete can be effectively smoothed. It is also possible to effectively remove laitance that has begun to adhere to the concrete surface.

FIG. 9 is a schematic diagram for explaining the third and fourth operating methods using the rear iron part 13r. By lowering the handle part 16, the operator OP can tilt the rear side of the main body part 15 downward using the roller 12 as a fulcrum, and bring the edge 13e of the rear trowel part 13r into contact with the concrete surface. Can be done.

In the third operation method, the motor 26 rotates the roller 12 in the forward direction indicated by the solid arrow F while the edge 13e of the rear trowel portion 13r is in contact with the concrete surface, and the rotational driving force of the motor 26 is used to propel the roller 12. The main body portion 15 is moved forward as a force. Thereby, after the roller 12 presses the surface of the concrete before drying, the surface of the concrete can be rubbed by the edge 13e of the rear trowel portion 13r that moves following the roller 12. Therefore, similarly to the first operating method described above, the surface of concrete can be easily smoothed, and laitance can also be effectively removed.

In the fourth operation method, with the edge 13e of the rear trowel portion 13r in contact with the concrete surface, the roller 12 is rotated idly by the rotational driving force of the motor 26 while the roller 12 is in contact with the concrete surface. 15 is moved forward. In order to idle the roller 12, the roller 12 may be rotated by the motor 26 in the backward direction indicated by the dashed arrow R, and the main body 15 may be pushed forward via the handle portion 16 to move it forward. Alternatively, with the motor 26 rotating the roller 12 in the forward direction indicated by the solid arrow F, the main body 15 is pushed through the handle 16 at a speed faster than the circumferential speed of the roller 12 due to the rotational drive of the motor 26. Then, the main body portion 15 may be moved forward. According to the fourth operating method, the friction of the roller 12 and the sliding of the edge 13e of the rear trowel portion 13r smooth the concrete surface and remove laitance, similar to the second operating method. can be carried out in a specific manner.

Note that it is easier for the operator OP to visually recognize the state of contact with the concrete surface at the rear trowel section 13r than at the front trowel section 13f. Therefore, in both the third operating method and the fourth operating method, the work while visually checking the finished surface treatment is easier than in the first operating method and the second operating method.

The operator OP can perform the surface treatment in step S50 of FIG. 5 while appropriately combining the operations of the processing apparatus 10 as described above. Thereby, the operator OP can easily smooth the surface of the concrete before drying by simply operating the processing device 10. In addition, laitance can be effectively removed, and problems such as the occurrence of cracks, deterioration of appearance, and deterioration of bonding properties between old and new concrete due to laitance can be suppressed.

The processing device 10 has a simple configuration as described above, and can be easily reduced in size and weight. Further, as described above, the processing device 10 can be easily handled by the operator OP via the handle portion 16, and can be turned around easily. Therefore, the processing device 10 can be suitably used in, for example, a workshop where the construction area is relatively small, such as the dirt floor of a general residence, the floor of a carport, a dog run, and the like. The processing apparatus 10 can be suitably used, for example, at a construction site with an area of 15 m ² or less or a construction site with a width of 1 m or less.

According to the processing device 10, the worker OP can perform surface treatment on concrete before drying by performing simple tasks while standing, such as controlling the rotation of the roller 12 and operating the main body 15 via the handle 16. is possible. Therefore, the burden on the body of the worker OP is significantly reduced compared to manual surface treatment using a wooden trowel or a metal trowel. Furthermore, the occurrence of variations in the quality of surface treatment due to differences in the technical ability of the workers OP is also suppressed.

According to the processing device 10, the operating section 40 is provided on the grip section 18 near the worker OP's hand, and the worker OP can control the rotation of the roller 12 and the trowel section 13 while checking the surface condition of the concrete. Finishing work can be done easily. Therefore, the quality of the concrete surface finish can be easily improved.

As described above, according to the treatment device 10 of the first embodiment and the method for surface treatment of concrete before drying, it is possible to greatly reduce the burden on the worker while suppressing deterioration in the quality of finished concrete. Can be done. Further, the working time and cost required for concrete placement can be significantly reduced.

2. Second embodiment:
FIG. 10 is a schematic side view of the processing apparatus 10A of the second embodiment when viewed from the side. FIG. 10 shows a schematic cross-sectional view of the construction site after the concrete layer CL is formed in the concrete placing process.

The processing device 10A of the second embodiment has substantially the same configuration as the processing device 10 of the first embodiment, except that the handle portion 16 is omitted and the processing device 10A is configured to be self-propelled. In the processing apparatus 10A of the second embodiment, the main body 15 is tilted so that the edge 13e of the front trowel part 13f or the edge 13e of the rear trowel part 13r is in contact with the concrete surface. The center of gravity is adjusted to ensure stable placement on the concrete surface. The operator OP can rotate the roller 12 in the forward direction or the backward direction by remote operation via the operation unit 40 (not shown), as described in the first embodiment.

In the concrete surface treatment of the second embodiment, the operator OP operates the treatment apparatus 10A, for example, as follows. The worker OP installs the main body part 15 on the concrete layer CL before drying with the edge 13e of the front trowel part 13f in contact with the concrete, rotates the roller 12 in the backward direction with the motor 26, The main body part 15 is made to move backward. Alternatively, the worker OP installs the main body part 15 on the concrete layer CL with the edge 13e of the rear trowel part 13r in contact with the concrete, rotates the roller 12 in the forward direction, and rotates the roller 12. The main body part 15 is made to move forward by rotational driving. By such an operation, the surface of the concrete before drying can be rubbed by the edge 13e of the trowel part 13 that moves following the roller 12 while being pressed by the roller 12, and the surface of the concrete can be smoothed and Laitance can be removed.

According to the processing apparatus 10A of the second embodiment, the surface treatment of concrete can be performed by making the processing apparatus 10A self-propelled by remote operation. Therefore, the surface treatment of concrete is made easier, and the work burden on the operator OP can be further reduced. In addition, according to the treatment apparatus 10A of the second embodiment and the method of surface treatment of concrete using the same, various effects similar to those described in the first embodiment can be achieved.

3. Other embodiments:
The technology of the present disclosure is not limited to the configuration of the embodiment described above, and can be modified as follows, for example. All other embodiments described below are positioned as examples of forms for implementing the technology of the present disclosure, similarly to each of the embodiments described above.

3-1. Other embodiment 1:
In each of the embodiments described above, the processing devices 10 and 10A may have only one of the front soldering iron section 13f and the rear soldering iron section 13r. In other words, the iron portion 13 may be provided at least one of the front and rear sides of the roller 12. Even with this configuration, by moving the trowel portion 13 following the rollers 12 on the surface of the concrete before drying, it is possible to smooth the surface of the concrete and remove laitance.

3-2. Other embodiment 2:
In each of the embodiments described above, the iron part 13 may be connected to the main body part 15 with the height position and inclination angle fixed. Furthermore, in each of the above embodiments, the edge 13e of either the front trowel portion 13f or the rear trowel portion 13r contacts the concrete surface even when the main body portion 15 is not tilted about the roller 12 as a fulcrum. It may be installed so that

3-3. Other embodiment 3:
In the processing apparatuses 10 and 10A of each of the embodiments described above, the roller 12 may be configured to be rotatable only in either the forward direction or the backward direction. In the first embodiment described above, the operating section 40 may be provided at a location other than the grip section 18 of the handle section 16.

3-4. Other embodiment 4:
In the processing apparatuses 10 and 10A of each of the embodiments described above, a plurality of rollers 12 may be provided at the bottom of the main body 15. The plurality of rollers 12 may be arranged in the front-rear direction at the bottom of the main body part 15, or may be arranged in a line in the width direction. Each of the plurality of rollers 12 may be driven by an individual drive unit 25, and may be configured such that the rotation direction and rotation speed can be controlled separately. In other words, the first roller and the second roller may be configured to be able to rotate in opposite directions.

DESCRIPTION OF SYMBOLS 10, 10A... Processing device, 12... Roller, 13... Soldering iron part, 13e... Edge part, 13f... Front iron part, 13r... Rear iron part, 15... Main body part, 16... Handle part, 17... Connection shaft part, 18 ... Gripping part, 20... Housing part, 21... Frame member, 22... Cover member, 25... Drive part, 26... Motor, 27... Transmission mechanism, 27b... Timing belt, 28... Control unit, 29... Power supply part, 31 ... Fixed part, 32... Connection part, 33... Slide member, 33b... Connection bar, 34... Holding part, 35... Swinging part, 36... First fastening member, 37... Second fastening member, 38... Third fastening member , 40... Operation unit, 41... Operation panel, 42... Main power button, 43... Speed adjustment button, 45... Drive switch unit, 46... Forward switch, 47... Reverse switch, 49... Emergency drive stop button, BL... Base layer , CL...concrete layer, OP...worker, RF...reinforcing member, SL...crushed stone layer

Claims (6)

A treatment device used for surface treatment of concrete before drying,
a cylindrical roller arranged so that its side surface is in contact with the concrete before drying;
A main body part in which only one roller is attached to the bottom, is supported by the one roller on the concrete before drying, and is equipped with a drive part including a motor that rotationally drives the roller;
a front iron part attached to the main body part in front of the roller;
a rear iron part attached to the main body part behind the roller;
a handle portion extending obliquely upward toward the rear from the main body portion, and having a grip portion provided at an upper end to be gripped by an operator;
Equipped with
By lifting the gripping portion upward, the front side of the main body tilts downward using the roller as a fulcrum, and the edge of the front trowel portion comes into contact with the surface of the concrete before drying, causing the gripping portion to be lowered. The rear side of the main body part is tilted downward using the roller as a fulcrum by the lowering operation in the direction, and the edge of the rear trowel part is configured to come into contact with the surface of the concrete before drying,
The drive unit is capable of switching the rotation direction of the roller between a forward direction and a backward direction,
The grip part is provided with an operation part that allows the operator to switch the rotation direction of the roller,
The roller has a smooth side surface so that the surface of the concrete before drying can be smoothed by self-propelling and idle rotation . The processing device according to claim 1,
The processing device , wherein the drive section is disposed above the roller in the main body . 3. The processing device according to claim 2,
A processing device, wherein a battery for supplying power to the motor is removably installed on the upper surface of the main body. The processing device according to claim 1,
The operation unit includes a forward switch and a backward switch that can be pressed by the operator,
The drive unit continues to rotate the roller in the forward direction when the forward switch is kept pressed, continues to rotate the roller in the backward direction when the backward switch is kept pressed, and continues to rotate the roller in the backward direction when the forward switch is kept pressed. and the reversing switch are not pressed, the processing device is configured to bring the motor into a stopped state. The processing device according to claim 1,
The front iron part and the rear iron part are connected to the main body part in a state where the height and inclination angle with respect to the main body part can be adjusted. A method of surface treatment of concrete using the treatment apparatus according to any one of claims 1 to 5 , comprising:
The roller is arranged so that the side surface is in contact with the concrete before drying, and the main body is tilted using the roller as a fulcrum, so that the edge of either the front trowel part or the rear trowel part is in contact with the concrete before drying. A process of bringing it into contact with concrete,
While the roller is self-propelled using the rotational driving force of the motor as a propulsion force, the concrete before drying is removed by the pressure of the roller and the sliding of the edge of the front trowel section or the rear trowel section. a step of smoothing the surface;
Smoothing the surface of the concrete before drying by pressing the roller and sliding the edge of the front trowel part or the rear trowel part while idling the roller by the rotational driving force of the motor. The process of
A method of providing.

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