JPH0242826Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application: The present invention relates to a device for horizontal finishing of mortar floors in a semi-hardened state.

Conventional technology: When constructing a concrete building with two or more floors, even if work starts in the morning, priority is placed on pillars, walls, stairs, etc., excluding earthen floors, The one against the floor becomes evening. For this reason, floor leveling work, which is done after waiting for the poured concrete to reach a semi-hardened state, becomes a late-night work. This leveling finishing work is often repeated two or three times in what is called "pressing finishing" performed by plasterers, and requires a considerable number of people. In order to improve this point, self-driving finishing robots have been developed, but these robots have complex mechanical equipment and are difficult to use in medium-sized or small-sized buildings due to cost and handling considerations.

Problems that the invention aims to solve: Plasterers perform presser finishing work in a half-slumped posture, which requires a large amount of labor, time, and a large number of people.
In addition, if we try to perform this work with a self-driving robot to achieve the same effect, there will be problems not only in terms of equipment costs, but also in terms of transportation and operation.
This makes it unsuitable for small to medium-sized buildings. In view of these circumstances, this proposal
The purpose of the present invention is to develop a leveling finishing device that can be particularly suitably used in small- and medium-sized buildings.

Means for solving the problem: The material supply section according to the present invention includes a cement tank provided with a number of discharge holes at the bottom, which is vibrated by a vibration exciter, and a water tank equipped with a sprayer. A frame is provided to support a cutting part equipped with a rotating cutter that can move up and down, and a rotating mechanical iron.A roller wheel is attached to one end of this frame, so that both ends can be connected to the roller wheel and the mechanical iron. The present invention is characterized in that a traveling frame is supported, and a material supply section and a cutting operation section are disposed between the roller wheels and the machine iron.

It is desirable that this device be equipped with a detection system for detecting the height of the traveling frame. This detection system can be composed of a light projector that is mounted on a floor or wall and generates horizontal light, and a light receiver on a traveling frame. The light receiver on the traveling frame is configured to include a series of light receiving slits and a series of photoelectric conversion elements. In this case, the light generated from the floodlight on the floor or wall becomes the reference light, and the light incident on the No. n slit will indicate the height of the traveling platform according to the value of n. The driving sources of the cutting action portions are controlled so that n is set to zero.

When an operator operates the drive sources of the material supply section and the cutting operation section as appropriate while monitoring the progress of the work, the above-mentioned detection system is installed on a visible light projector installed on the floor or wall and on a traveling frame. In this case, the two projectors are supported in such a way that the projector emits light in a horizontal direction, and for visible light, by using a suitable filter, e.g. One is a red light and the other is a green light.

Function: The traveling frame is relatively lightweight when the cement tank and water tank are empty (empty state), and is easy to carry in and out. This material is transported empty to the floor where the floor is to be finished, and then cement and water are supplied.

The frictional resistance between the semi-hardened concrete floor being finished while the traveling frame is moved and the mechanical trowel whose leveling part rotates is extremely small, and even though the water tank and cement tank have a considerable weight, the floor cannot be moved. The pedestal can be easily moved by hand. Regarding this point, it is also related that the width of the traveling frame is relatively small, for example, 1 m or less.

Embodiment: Figure 1 is a side view of the semi-hardened concrete floor finishing device according to the present invention, which is equipped with a detection system for detecting the height of the traveling platform, and Figure 2 is a plan view of the device shown in Figure 1. It is a diagram. In these figures, 1 is a semi-hardened concrete floor to be finished (hereinafter simply referred to as the floor), and 2 is a traveling frame that is moved on the floor 1. The traveling frame 2 is provided with roller wheels 3 and a mechanical trowel 4 on which the leveling unit 5 is rotated, respectively, at one end and the other end of the mount.
A material supply section 6 and a cutting section 8 having a rotating cutter 7 are provided between the two.

The structure of the material supply section 6 is shown in FIGS. 3 and 4. As shown in these figures, the material supply section 6
A cement tank 13 is provided with a large number of discharge holes 11 in the bottom 10 and is vibrated by a vibrator 12, and a water tank 15 is equipped with a sprayer 14.
It consists of The cement tank 13 is reciprocated by a cam 16 of the vibrator 12. A restoring spring 17 keeps the discharge hole 11 provided at the bottom of the cement tank 13 closed when the vibrator 12 is stopped. 12a and 14a are vibration exciters 1, respectively.
2. The sprayers 14 are operated at the same time by the drive source (electric motor).

The structure of the cutting action section 8 is shown in FIG. In this figure, 20 is an electric motor for rotating the rotating cutter 7, and 21 is an electric motor for vertically feeding the rotating cutter 7. A feed mechanism 2 operated by an electric motor 21
2 includes a threaded barrel 23 that engages with the shaft 23 of the rotating cutter 7 in a state that allows rotation of the shaft, a large gear 24 provided in the center with a threaded hole that fits into the threaded barrel 23, and a large gear. A small gear 25 meshing with 24,
It is of a screw feed type and consists of a holding part 26 that restrains the vertical movement of the large gear 24.

A system for appropriately operating the material supply section 6 and the cutting operation section 8 is shown in FIG. This system includes a light projector 30 that emits light in the horizontal direction, a light receiver 31 that receives light from the projector 30, a feeler 32 that detects irregularities on the floor 1, a display 33, and a controller 36. The light receiver 31 is connected to the feeler 32 via a vertical holding mechanism 35 using a suspended weight. In this device, photoelectric conversion elements are densely arranged in the vertical direction, and the height of the floor 1 is displayed on the display 33. Finishing work on the floor 1 is carried out by moving the traveling platform 2 forward and backward as appropriate and using the switches (material supply section 6, cutting operation section 8 and mechanical trowel 4) provided on the controller 36.
It is advanced by opening and closing the electric motor's open/close switch).

Effects of the idea: This idea can horizontally finish semi-hardened concrete floors using a device that is relatively lightweight and easy to carry in and out.
The purpose is to reduce the amount of labor and time required for the work.

Note that if the finished floor is to be used as is, it is desirable to attach a cleaner to the cutting section to suck up and remove the cutting waste.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an example of the device according to the present invention;
FIG. 2 is a plan view of what is shown in FIG. 1, FIGS. 3 to 5 are partial views of the above device, and FIGS.
The figures are a side view and a plan view of the material supply section, and FIG. 5 is a vertical sectional view of the cutting action section.

Claims (1)

[Scope of utility model registration request] a material supply section consisting of a cement tank provided with a number of discharge holes at the bottom and vibrated by a vibration exciter, and a water tank equipped with a sprayer; a cutting action section equipped with a rotating cutter that can move up and down; A frame is provided to support a rotating mechanical iron, and by attaching a roller wheel to one end of this frame, both ends are supported by the roller wheel and the mechanical iron, and material is supplied between the roller wheel and the mechanical iron. 1. A device for horizontal finishing work on semi-hardened concrete floors, comprising a traveling frame on which a cutting section and a cutting section are arranged.