JP2013108321A - Cutting device of concrete or the like having dust full state reporting function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting device of concrete or the like, capable of suitably avoiding the situation where an operation is continued in the state where dust housed inside a dust case is full.SOLUTION: A dust case 4 for housing dust recovered by a dust collecting device is held inside a machine body 2, and an inner tray 6 is arranged on an inner side of the dust case 4. The inner tray 6 is configured to be lowered corresponding to a storage amount of the dust by being elastically supported at an upper part of a bottom surface of the dust case 4, and has full detection means (a proximity switch 8 and a magnet 9) for detecting the state when the dust inside the inner tray 6 becomes full and the inner tray 6 is lowered to a full position, and full reporting means for reporting the state.

Description

  The present invention relates to a cutting device such as concrete that cuts or cuts a pavement surface of a road or a concrete surface, and more particularly, to a cutting device such as concrete accompanied by a dust collecting device that collects dust such as cutting waste.

  When a concrete cutter performs a cutting operation on a road pavement or concrete, dust such as cutting waste is generated. This dust needs to be collected as industrial waste, and there are so-called “wet” and “dry” methods for collecting dust in a conventional concrete cutter.

  In the wet dust collection method, water is supplied from a tank at the time of cutting work, the dust is adsorbed on the water to make it into mud, and this is collected. On the other hand, in the dry dust collection method, the air inside the blade cover that is put around the cutter blade is sucked by the dust collector to collect the dust. It is comprised so that the isolate | separated dust may be accommodated in the attached dust collection container (dust case).

JP 2006-241825 A

  If the dry concrete cutter continues to operate, the collected dust will gradually accumulate in the dust case, and if the dust in the dust case reaches full capacity, stop the operation of the concrete cutter, It is necessary to remove the dust case from the fuselage and discharge the collected dust to the outside. However, the conventional concrete cutter is not structured to notify the operator that the dust in the dust case is full, so even if the dust becomes full during operation, it can be operated as it is. There was a problem that would continue.

  The present invention is equipped with means for detecting that the dust in the dust case is full and notifying the operator, thereby enabling the above-described problems in the prior art to be suitably solved. An object of the present invention is to provide a cutting device.

  The cutting device for concrete or the like according to the present invention is configured such that a dust case for storing dust collected by a dust collector is held in the machine body, and an inner tray is disposed inside the dust case, The tray is elastically supported above the bottom surface of the dust case, and is configured to descend according to the accumulated amount of dust. The dust in the inner tray becomes full, and the inner tray reaches the full position. It is characterized by having means for detecting this state (full amount detecting means) and means for notifying this state (full amount notifying means) when descending.

  The full capacity detection means is placed in the mounting space of the magnet attached to the inner tray and the dust case, and outputs a signal when detecting magnetism above the specified value, or the open / close state of the connected lead wire It is preferable to be configured by an approach switch configured to switch between the two, and when the inner tray is located above the full position, no magnetism is detected and the magnet is lowered to the full position. In this case, the proximity switch and the magnet are preferably arranged with a relative positional relationship such that magnetism is detected.

  The full amount detection means is disposed in the space for attaching the magnetic body attached to the inner tray and the dust case, and outputs a signal when the magnetic body approaches a certain distance, or of the conductor to be connected. And an approach switch configured to switch the open / close state. In this case, when the inner tray is located above the full position, the magnetic body is not detected, and the full position It is preferable that the proximity switch and the magnetic body are arranged with a relative positional relationship such that the magnetic body is detected when the magnetic body is lowered.

  Further, the full notification means receives a signal output from the full detection means or outputs a warning lamp that is turned on or blinks by switching the open / close state of the connected conductor and / or output from the full detection means. It is preferable that the warning buzzer beeps in response to the signal to be received or by switching the open / close state of the connected lead wire. Further, when a state where the inner tray is lowered to the full position is detected, It is preferable that the engine or the motor that supplies the rotational driving force to the blade is stopped.

  Since the cutting device such as concrete according to the present invention detects the full state of dust collected by the dust collector and is notified to the operator, the dust contained in the dust case is full. In this state, the situation where the operation of the cutting device is continued can be suitably avoided.

FIG. 1 is a cross-sectional view of the dust case 4 (initial position) and the machine body 2 and the like mounted in the machine body 2 of the cutting apparatus 1 according to the first embodiment of the present invention. FIG. 2 is a sectional view of the dust case 4 and the like showing a state where the dust in the dust case 4 shown in FIG. 1 is full and is lowered to the full position.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention “concrete cutting apparatus” will be described with reference to the accompanying drawings. In this cutting device 1, a dust case 4 (substantially rectangular box-shaped container) that accommodates dust collected by a dust collector (not shown) is disposed on the side of the machine body 2 (see FIG. 1). Alternatively, it is configured to be held in the body 2 in a state of being inserted from the rear) toward the back of the mounting space 3 (hollow part) formed in the body 2.

  The dust case 4 is open at the top (or has a partial opening at the top), and this dust case 4 is set at an appropriate position in the mounting space 3 to operate the dust collector. Then, the dust separated and collected by the dust collector falls from the dust discharge part 5 opened above the mounting space 3 and is accommodated in the dust case 4.

  As shown in FIG. 1, an inner tray 6 is disposed inside the dust case 4, and a plurality of inner trays 6 are disposed between the bottom surface of the dust case 4 (this embodiment). Are elastically supported above the bottom surface of the dust case 4 by four coil springs 7 (elastic materials).

  The inner tray 6 is held at the position (initial position) shown in FIG. 1 when it is in an “empty state” where dust is not yet accommodated (or when it is close to “empty”). Is accumulated gradually while compressing the coil spring 7 due to the weight of the dust, and when the dust becomes full, the dust falls to the position shown in FIG. 2 (full position).

  In the present embodiment, when the inner tray 6 is lowered to the full position shown in FIG. 2, the state is detected by the approach switch 8 and is notified to the operator. It is possible to avoid the operation of the cutting apparatus 1 being continued in a state where the dust contained in the container is full.

  More specifically, as shown in the drawing, an approach switch 8 is disposed in the back of the mounting space 3 of the dust case 4, and a magnet 9 (magnetic) is provided on the outer surface of the side wall 6 a on the back side of the inner tray 6. Body) is attached. The proximity switch 8 is configured to output a signal when a magnetism exceeding a specified value is detected. When a magnetic body that emits a certain line of magnetic force is brought closer, the magnetic body approaches the fixed distance from the proximity switch 8. A signal will be output at that time.

  In the present embodiment, when the inner tray 6 is positioned above the full position shown in FIG. 2, the magnetism of the magnet 9 is not detected, and when the inner tray 6 is lowered to the full position shown in FIG. The proximity switch 8 and the magnet 9 are arranged with a relative positional relationship such that the magnetism of 9 is detected, and the proximity switch 8 is attached so that the height position can be adjusted.

  In this cutting apparatus 1, when the inner tray 6 becomes full and descends to the full position shown in FIG. 2 and the magnetism of the magnet 9 is detected by the proximity switch 8, it is output from the proximity switch 8. Based on the signal, the engine of the cutting device 1 (the engine or motor that supplies the rotational driving force to the cutting blade) is forcibly stopped, and a warning lamp arranged near the operation handle of the cutting device 1 is lit. Alternatively, a warning buzzer sounds and the operator can be notified that the inner tray 6 is full.

  In the present embodiment, the inner tray 6 is supported from the lower side by the coil spring 7. However, if the inner tray 6 is elastically supported so that it gradually sinks according to the amount of accumulated dust, the inner tray 6 is not necessarily lowered. It may not be supported from the side, and for example, it may be configured to be suspended from above by a coil spring or other elastic material.

  In this embodiment, a magnetic detection type switch is used as the proximity switch 8 and is configured to output a signal when magnetism exceeding a specified value is detected. It is also possible to use a metal detection type proximity switch that outputs a signal when an iron or the like approaches a certain distance. In this case, when the dust case 4 and other elements are made of synthetic resin, and the inner tray 6 is located above the full position shown in FIG. 2, the magnetic material is not detected, and is shown in FIG. The proximity switch and the magnetic body are arranged with a relative positional relationship such that the magnetic body is detected when it is lowered to the full position.

  Further, the proximity switch may be configured not to output a signal when a magnetic or magnetic material is detected, but to switch an open / closed state (energized state and non-energized state) of the connected conductor. .

1: Cutting device,
2: Airframe,
3: Installation space,
4: Dust case,
5: Dust discharge part,
6: Inner tray
7: coil spring,
8: proximity switch,
9: Magnet

Claims (7)

A dust case that holds the dust collected by the dust collector is configured to be held in the aircraft,
An inner tray is placed inside the dust case,
The inner tray is configured to be lowered according to the amount of accumulated dust by being elastically supported above the bottom surface of the dust case,
When the dust in the inner tray becomes full and the inner tray is lowered to the full position, it has a full detection means for detecting this state, and a full notification means for notifying this state. A cutting device for concrete, etc.   The full amount detection means is placed in the space where the magnet mounted on the inner tray and the dust case are installed, and outputs a signal when it detects magnetism above the specified value, or switches the open / close state of the connected conductor The cutting device for concrete or the like according to claim 1, comprising: an approach switch configured as described above.   When the inner tray is located above the full position, magnetism is not detected, and the proximity switch and magnet are arranged in such a relative positional relationship that magnetism is detected when the inner tray is lowered to the full position. The cutting apparatus for concrete or the like according to claim 2, wherein   The full amount detection means is placed in the installation space of the magnetic body attached to the inner tray and the dust case and outputs a signal when the magnetic body approaches a certain distance, or the open / close state of the connected conductor The cutting device for concrete or the like according to claim 1, comprising: an proximity switch configured to switch between the two.   When the inner tray is located above the full position, the magnetic body is not detected, and the proximity switch and the magnetic body have a relative positional relationship such that the magnetic body is detected when the inner tray is lowered to the full position. The cutting apparatus for concrete or the like according to claim 4, wherein   The full notification means receives a signal output from the full detection means, or is output from a warning lamp that is lit or blinks by switching the open / close state of the connected conductor and / or from the full detection means. The cutting device for concrete or the like according to any one of claims 1 to 5, wherein the cutting device is a warning buzzer that receives a signal or sounds by switching the open / closed state of a connected wire.   The engine or the motor for supplying the rotational driving force to the blade of the cutting device is stopped when the state where the inner tray is lowered to the full position is detected. The concrete cutting apparatus according to any one of the above.

Images