JP3769617B2 - Remote control type dust remover - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a dust removing device having a remote operation function suitable for removing welding dust and the like in a welding workshop.
[0002]
[Prior art]
Pneumoconiosis, which is known as a typical occupational disease, still occupies the leading position in occupational disease classification in Japan, and the proportion of welded lungs in pneumoconiosis has been increasing in recent years. A welder's lung is a type of pneumoconiosis that develops due to the inhalation of welding dust. To prevent this, it is necessary to eliminate welding dust, which is a causative substance, from the workplace and prevent exposure of workers. Therefore, the most frequently used technical method for factory ventilation is ventilation by local exhaust.
[0003]
In order to remove welding dust using the dust removal device for local exhaust, it must be noted that the arc point that is a dust generation source moves as the work progresses. As a general dust removal device is used with the hood fixed in position, as a rule, if the work progresses and the arc point moves away from the hood, sufficient ventilation efficiency cannot be obtained. Because. There is also a product “Mobile Exhauster” in which the hood of the dust removing device is movable, and it is introduced by Jefferson (the following Non-Patent Document 1).
[0004]
[Non-Patent Document 1]
Welding Engineer, 55 (10); 39-40, 1970
[0005]
[Problems to be solved by the invention]
However, in the hood movable dust removing device “Mobile Exhauster” described above, the position of the hood is not automatically adjusted, and the operator must manually adjust the position. For this reason, the position of the hood must be frequently adjusted during the work, and the work is sometimes interrupted. Therefore, the use is apt to be avoided in the field.
[0006]
Therefore, the present invention can efficiently remove welding dust and the like without interrupting the work by providing the dust removing device with a function of adjusting the position of the hood by remote control as the welding work proceeds. With the goal.
[0007]
[Means for Solving the Problems]
The present invention provides an apparatus for removing dust (including fume) generated during welding, and a dust collection hood that forms a dust suction port is configured to be movable in a welding workshop. The position of the arc point is supported by the supported means, and an operation signal is transmitted by wire or wireless from a switch configured to be displaceable with respect to the means, and the means is operated based on the signal. The dust collection hood is configured to be moved to a different position in the welding work place. A light source that emits light that passes through the light shielding part of the protective surface for welding is installed with the position relative to the dust collection hood fixed.
[0008]
The remote-control-type dust removing device according to the present invention is configured to be able to move within a welding work hood that forms a dust suction port and a welding work place, and supports the dust collecting hood to determine its position with respect to the arc point. A hood moving means comprising: a support portion; and a drive portion that moves the support portion to move the dust collection hood from the first position of the welding work place to a second position different from the first position. A switch for switching between operation and stop of the drive unit of the hood moving means, the switch being substantially connected to the drive unit so as to be able to transmit an operation signal and configured to be displaceable with respect to the hood move means; And a light source that emits light that is provided at a fixed position with respect to the dust collecting hood and that passes through the light shielding portion of the protective surface for welding .
[0009]
According to such a configuration, even when the arc point moves as the welding operation proceeds, the dust collection hood is made to follow the arc point while checking the position of the dust collection hood with a light source. Since it can be moved and the dust collection hood can always be positioned near the arc point, high ventilation efficiency can be maintained. Moreover, since the movement of the dust collection hood is performed by remote control using a switch, the position of the dust collection hood can be adjusted without interrupting the work.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view of a remotely operated dust removing device (hereinafter referred to as “dust removing device”) 1 according to an embodiment of the present invention.
[0011]
The configuration of the dust removing device 1 will be described with reference to FIG. The dust removing device 1 is a device for removing dust generated during welding. A flexible duct (hereinafter referred to as “duct”) 12 is connected to a dust collection hood (hereinafter referred to as “hood”) 11 that forms an inlet 11a for sucking dust, and these hoods 11 are mounted on a carriage 21 having wheels. And the assembly of the duct 12 is supported. The hood 11 has a shape close to a canopy type suitable for collecting dust accompanied by a strong updraft. The duct 12 is for conveying the sucked dust to a dust box 13 as a dust collector, and can be freely displaced in a direction orthogonal to the tube axis. The dust box 13 is provided with a measure for collecting the sucked dust, and is configured such that the purified air is discharged into the atmosphere. For example, a filter is built in the dust box 13 so that air after filtration is discharged. A pump (not shown) for generating a suction negative pressure is installed on the downstream side of the dust box 13.
[0012]
The gantry 21 of the dust removing device 1 is configured to be movable in the welding work place by providing wheels, and the hood 11 and the duct 12 are connected to the work place by support columns 23 a to 23 c that are fixed upright on the bed portion 22. Supporting on the floor surface F, the height from the arc point A of the suction port 11a is determined. The carriage 21 is provided with driving wheels 24 and 24 and driven wheels 25, 25, and 26 as the wheels. Of the driving wheels 24 and 24 and the driven wheels, the reference numeral 25 indicates that the axle is the bed portion 22. The movement direction of the trolley 21 and the hood 11 is determined. On the other hand, the reference numeral 26 among the driven wheels is for supporting the load of the duct 12, and the axle is configured to be rotatable in a plane parallel to the bed portion 22. 21 movement can be followed. In addition, an electric motor 27 is installed under the floor of the carriage 21, and the power generated by the electric motor 27 is transmitted to the drive wheels 24 and 24 via a gear (not shown) that gives a predetermined reduction ratio, The gantry 21 is configured to move at a predetermined speed in the welding work place. Reference numerals 28 and 28 denote batteries for supplying electric power to the electric motor 27.
[0013]
FIG. 2 is a front view of the dust removing device 1.
A light bulb 31 as a light source is attached to the dust removing device 1 so that an operator can confirm the position of the hood 11. The light bulb 31 emits light that can pass through the light shielding portion of the welding protective surface, and is fixed on the bed portion 22 of the carriage 21 by a support column 32. The direction of the light bulb 31 is set in a direction orthogonal to the moving direction of the carriage 21 by the electric motor 27, that is, in a direction facing the front of the dust removing device 1.
[0014]
Further, the dust removing device 1 is provided with a switch 33 for switching the operation and stop of the electric motor 27 to adjust the position of the hood 11. While the switch 33 is connected to the motor controller 34 of the electric motor 27 by a conductive wire, the switch 33 is not mechanically restricted with respect to the carriage 21 and can be freely displaced. In the present embodiment, the switch 33 has a function of switching between normal rotation, reverse rotation, and stop of the electric motor 27 and operates in response to an operation signal from the switch 33 to transmit a corresponding signal to the electric motor 27. The motor controller 34 includes the circuit. The electric motor 27 and the motor controller 34 are built in the case C as drive units and are integrally installed under the floor of the carriage 21.
[0015]
With respect to the present embodiment, the bed portion 22, the columns 23a to 23c, the drive wheels 24 and the driven wheels 25 and 26 serve as support portions for the hood moving means, and the electric motor 27 and motor controller (including a relay circuit) 34 serve as the hood moving means. The drive unit is configured.
[0016]
FIG. 3 is a configuration diagram of a protective surface for welding used together with the dust removing device 1 during welding.
The welding protective surface is provided as a part of the main body 41 interposed between the arc point A and the operator's head at the time of welding, and selectively transmits light emitted from the arc point A. It is configured to include a light shielding portion 42 and a grip portion 43 attached to the main body 41 for the operator to determine the position of the main body 41 with respect to himself / herself. In the present embodiment, the switch 33 of the dust removing device 1 is attached to the grip 43 of the protective surface for welding, and the operation and stop of the electric motor 27 are switched by the lever 33a of the switch 33.
[0017]
Next, operation | movement of the dust removal apparatus 1 which concerns on this embodiment is demonstrated using FIG.
During the welding operation, the dust removing device 1 sets the direction so that the moving direction of the carriage 21 and the welding traveling direction are parallel to each other, and the center of the hood 11 is positioned almost directly above the arc point A. In the vicinity of the arc point A.
[0018]
At the time of welding, the operator confirms the position of the hood 11 with the light emitted from the light bulb 31, and when the hood 11 is separated from the arc point A beyond the allowable range, the lever of the switch 33 is selected according to the direction. 33a is operated and the electric motor 27 is rotated forward or backward. As a result, the drive wheels 24 and 24 rotate at a speed corresponding to the gear reduction ratio, and the carriage 21 and the hood 11 supported by the carriage 21 are moved forward or backward. When the hood 11 approaches the arc point A, the operation of the lever 33a is stopped, the electric motor 27 is stopped, and the hood 11 is stopped at that position. When the operator repeats such an operation, the hood 11 can be moved following the arc point A, and the hood 11 can always be positioned near the arc point A.
[0019]
According to this embodiment, the following effects can be obtained.
First, even when the arc point A moves with the progress of the welding operation, the hood 11 can be moved by following this, so the hood 11 is always positioned near the arc point A, High ventilation efficiency can be maintained. For this reason, local exhaust can be realized economically with a small exhaust air volume, and the dust box 13 and the pump for generating the suction negative pressure can be easily reduced in size and weight. In addition, since the movement of the hood 11 following the arc point A is performed by remote operation using the switch 33, it is not necessary to interrupt the operation in order to adjust the position of the hood 11.
[0020]
Second, since the switch 33 is provided in the grip 43 of the protective surface for welding, it can be easily operated even during work.
Third, since the light bulb 31 is attached to the gantry 21, the position of the hood 11 can be confirmed while performing welding.
[0021]
In the above description, the switch 33 and the motor controller 34 are connected by a conductive wire so that the position of the hood 11 is remotely controlled. However, an operation signal is wirelessly transmitted from the switch 33 to the motor controller 34. It is good also as comprising and carrying out the remote control of the position of the food | hood 11. FIG.
[Brief description of the drawings]
FIG. 1 is a side view of a remotely operated dust removing device according to an embodiment of the present invention. FIG. 2 is a front view of the dust removing device. FIG. 3 is a configuration of a protective surface for welding used together with the dust removing device. Figure [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Remote operation type | mold dust removal apparatus, 11 ... Dust collection hood, 12 ... Flexible duct, 21 ... Mount carriage, 24 ... Drive wheel, 25 ... Drive wheel, 27 ... Electric motor, 28 ... Battery, 31 ... As light source Light bulb, 33 ... switch, 34 ... motor controller, 41 ... protective surface main body for welding, 42 ... light shielding part, 43 ... gripping part, A ... arc point, F ... work floor.

Claims (6)

An apparatus for removing dust generated during welding,
A dust collection hood that forms a dust inlet;
A support portion configured to be movable in the welding workshop, supporting the dust collection hood and determining a position with respect to the arc point thereof, and moving the support portion to move the dust collection hood from the first position of the welding workshop. A hood moving means configured to include a drive unit that moves to a second position different from
A switch for switching operation and stop of the drive unit of the hood moving means, the switch being substantially connected to the drive unit so as to be able to transmit an operation signal, and configured to be displaceable with respect to the hood move means; ,
Position relative to the dust collecting hood provided to be fixed, is configured to include a light source that emits light through the light shielding portion of the welding protective surface, and
The drive unit of the hood moving means is a remote operation type dust removing device that receives an operation signal from the switch and operates in accordance with the operation signal to move the dust collecting hood. The remote control type dust removing device according to claim 1, wherein the direction of the light source is set in a direction orthogonal to a moving direction of the support portion of the hood moving means. The remote control type dust removing device according to claim 2, wherein the traveling direction of welding and the moving direction of the support portion of the hood moving means are used in parallel.   The remote control type dust removing device according to any one of claims 1 to 3, wherein the switch is provided in a grip portion of the protective surface for welding. The switch includes a first switch for advancing the support portion of the hood moving means and a second switch for retreating the hood moving means, and the drive portion of the hood moving means is operated from the first and second switches. The remote control type dust removing device according to any one of claims 1 to 4 , further comprising a relay circuit that operates in accordance with a signal to move the support portion of the hood moving means forward or backward. An apparatus for removing dust generated during welding,
A dust collecting hood forming a dust inlet is supported by means configured to be movable in the welding work place, a position with respect to the arc point is determined, and a switch configured to be displaceable with respect to the means An operation signal is transmitted by wire or wirelessly, and the means is operated based on this signal to move the dust collection hood to a different position in the welding work place .
A remote-control-type dust removing device provided with a light source that emits light that is transmitted through the light shielding portion of the protective surface for welding, with a fixed position relative to the dust collection hood .

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