JPH04200873A - Shifting type local dust collecting apparatus - Google Patents

Abstract

PURPOSE:To surely collect and suck welding fume developed at the time of working without any leakage and to enable effective dust collecting treatment by surrounding welding position of a structural material containing a part of the other part in the structural material with a shifting booth. CONSTITUTION:As the shifting booth 21 laying a dust collector 22 surrounds the welding position of long structural material A containing a part of the other part in the structural material A, this is comparatively simple and equipment cost, etc., is low and economical, and as this is simply shifted at the welding work position of the structural material A so as to execute self-running with electric-moving type booth shifting means 35, 36, 37, trouble which the operator shifts this with hands, etc., is eliminated and further, the operator can easily weld in the shifting booth 21 and efficiency of the whole work is improved. Further, by executing the welding work in the booth under surrounding the welding position and a part of the other part in the structural material A with the shifting booth 21, the welding fume generated at the time of welding is not leaked to outer part from the shifting booth and the dust collecting treatment is executed with the dust collector 22.

Description

Detailed Description of the Invention [Objective of the Invention] (Industrial Application Field) The present invention is a mobile local collector used to collect welding dust generated during assembly and welding work of long structures. Concerning dust equipment.

(Prior art) For example, when assembling a long structure such as the main frame of an escalator truss structure, the constituent parts are joined together by arc welding (
7. A large amount of welding fume is generated when joining. This welding fume collects floating dust with particle sizes of 1 μm or less, which floats around the welding site and significantly reduces the working environment. <make it worse. For this purpose, a method has been proposed in which the welding fume is collected together with air and smoke is collected to collect dust.

For dust collection, a small mobile local dust collector shown in Figure 3]
is commonly used. This has a configuration in which a small dust collector 2 is mounted on a movable cart 3 with casters 1, and a smoke hood 5 is provided at the tip of a duct 4 extending from the dust collector 2. When welding a long structure A, the dust collector 2 and the moving cart 3 are moved by hand to the vicinity of the welding work site, and the welding point Th is covered with the smoke hood 5 at the tip of the duct 4. Welding fumes generated during welding work are collected and sucked from the smoke hood 5 through a duct 4 and collected by a dust collector 2.

On the other hand, a fixed large-scale dust collector 7 shown in FIG. 4 is known. This consists of a long fixed booth 8 that completely surrounds the long structure A, and a plurality of dust collectors 9 installed on the left and right sides of the booth at appropriate intervals in the longitudinal direction.
The fixed booth has a structure in which smoke hoods 10 are fitted in the left and right parts of the ceiling of the fixed booth 8 in the longitudinal direction, and ducts 1 are connected from the left and right smoke hoods 10 to the dust collectors 9. An opening 12 for loading and unloading the structure A is formed in the center of the ceiling of 8. Then, the long structure A is suspended by an overhead crane (not shown) and carried into the fixed booth 8 through the opening/closing port 12, and the welding work of the structure A is performed inside the fixed booth 8. The generated welding fumes are collected and sucked from a smoke hood 10 on the ceiling through a duct 11 and collected by a dust collector. The welded structure A is once again lifted up by the overhead crane and carried out of the fixed booth 8 in preparation for the next structure A to be carried in.

In addition to carrying in the structure A by lifting it by the above-mentioned overhead crane, an opening for carrying in and out is provided at the end face of the fixed booth 8, and from there, the structure A is carried in by a transport vehicle (not shown).
There is also a method that calculates the carry-in ratio of structure A.

(Problem to be solved by the invention) By the way, the conventional local dust collector 1 shown in FIG.
Now, since the long structure A has a wide range of welding points,
Every time the welding work location changes, the operator has to manually move the dust collector 2 along with the movable trolley 3, which is extremely troublesome and requires the smoke hood 5 to be positioned immediately near the welding work location. This gets in the way of welding work, resulting in poor workability and reduced efficiency. In addition, since the welding area is simply covered with a small smoke hood 5, the welding fume has poor smoke collection performance, and there is a problem that even a small amount of wind can affect the dust collection effect, reducing the dust collection effect.

In addition, with the latter conventional large fixed type dust collector 7 shown in FIG. 4, there is no need for the operator to move the dust collector 9, etc., and the workability and dust collection effect of the welding fume are relatively good. However, a long fixed booth 8 that surrounds the entire long structure A and a large number of dust collectors 9 are required, making the entire device very large-scale and requiring a large amount of equipment cost. Since it must be fixedly installed in a fixed position, it occupies a large space and wastes a lot of space when not in use, which is uneconomical.

Furthermore, relocation within the factory is extremely difficult due to its large size, and it is also extremely difficult to relocate the structure A within the large fixed booth 8.
There are many problems, such as the labor involved in transporting the equipment and the need for larger-scale auxiliary equipment such as overhead cranes and transport carts.

The present invention was made in view of the above circumstances, and its purpose is to provide relatively simple and economical equipment, and to
It can be easily moved to the welding work area of a structure without any hassle, and welding work can be performed efficiently.Moreover, it is effective in collecting and absorbing welding fumes generated during welding work without leaking them. It is an object of the present invention to provide a highly practical mobile local dust collector that can perform dust collection processing and improve the environment around a welding work site.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a mobile local dust collector for collecting dust by collecting welding fumes generated during welding work of long structures. A movable booth 4 that surrounds the welding location of the structure including a part of the structure and is capable of welding work inside; A dust collector that collects and smokes generated welding fumes from inside the booth to collect dust, and an electric booth moving means that moves the movable booth along the longitudinal direction of the structure in accordance with the welding location. It is characterized by

(Function) According to the mobile local dust collector having the above configuration, the mobile booth equipped with the dust collector is moved along the long structure by the electric booth moving handrail, and the movable booth is used to move the movable booth along the long structure. A part of the structure is also surrounded by the welding point. In this state, welding of the structure is carried out inside the mobile booth. During this welding operation, the welding
1 Neem is collected and smoked from inside the mobile booth and then collected and processed by a dust collector. In this way, the movable booth is sequentially moved along the long structure by the electric booth moving means, and the welding work of the structure is performed.

Here, the above-mentioned dust collector is installed 1. The mobile booth surrounds the welded part of a long structure, including part of the structure, and is larger than the conventional local dust collector shown in Fig. 3. It is much smaller than the fixed large-scale dust collectors, and requires fewer dust collectors, making it relatively economical with relatively low equipment costs.

Mano-1 The mobile booth can be easily moved to the welding work site of the structure by being self-propelled by one stage of electric booth movement, so there is no need to worry about having to move it by the operator or the hand pusher 5 l3. As the price increases, it becomes necessary to carry in long structures like in the case of fixed types. Since welding work can be done easily within the mobile booth, the efficiency of the entire work is improved.

Furthermore, since the mobile booth surrounds the welding area of the structure, including part of the structure, and the welding work is performed within the mobile booth, welding fumes generated during welding do not leak from inside the mobile booth to the outside. The dust can be collected and smoked without any problem, and the dust can be effectively collected by the dust collector, improving the environment around the welding work site.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1-2.

First, the local dust collector 20 shown in FIG. 1 includes a mobile booth 2], two dust collectors 22, and an electric booth moving means.

This mobile booth 21- surrounds the welded part of the elongated structure A, which is the main frame of the escalator truss structure, including a part of the structure A, and has an internal structure inside the mobile booth 21-. The whole box is shaped like a relatively short box with an open bottom so that 3 or 6 workers can perform the welding work. In other words,
This movable booth 21 surrounds a relatively short range in the longitudinal direction of the elongated structure A from the top surface to the left and right sides, and has an open bottom surface large enough for worker B to perform welding work easily at the right part of the interior. , 51 shapes and 1 size. In addition,
This movable booth 21 is constructed by installing a colored transparent light-shielding curtain 25 on the frame 24 in order to relieve the feeling of pressure during the internal welding work 15B. An opening 26 through which the elongated structure A is inserted is formed in the lower central half of the front and rear end faces, and entrance/exit doors 27 are provided on both left and right sides of this opening 26 through which the welding worker B enters and exits. Being CJed.

The two dust collectors 22 are each placed 13 on a dust collector support stand 28 extending far from the lower left side of the movable booth 21 so as to be movable together with the movable booth 21.

These dust collectors 22 are rectangular pyramid-shaped smoke suction tools 1.
; 2 Q − are connected to each other via ducts 30. The left and right smoke suction hoods 29 are configured to collect and suction the welding fume generated inside the movable booth 2, and the dust is collected by the dust collector 22 via a duct 30, respectively.

A welding machine support stand 31 is provided protruding from the right side of the movable booth 2, and a welding machine 32 is mounted on the welding machine support stand 31.

A torch cable 33 of a certain length is passed from this welding machine 32 into the movable booth 21-, and a welding 1.=4 34 is connected to the tip of this 1. is installed at an appropriate location.

As an electric booth moving means for moving the movable booth 21 along the longitudinal direction of the structure A, it is provided along the longitudinal direction at the left and right positions of the structure A on the floor where the elongated structure A is installed. 35 wheels are installed on each of the left and right rails 35, and wheels 36 are installed on the left and right rails 35, or wheels 36 are installed at the front and rear of the left and right lower portions of the mobile booth 21, and these outer wheels 36 are rotated. The drive motor (not shown) is installed at the left and right bottom of the mobile booth 2. In addition, -1,0----- 37 in the figure is a cable for power supply to the drive motor. be.

According to the mobile dust collector 20 configured in this manner, the worker operates the traveling motor as the electric booth moving means by operating a pendant switch or the like, and the left and right front and rear wheels 36 are moved from side to side. The transfer is run on the rail 35. The movable booth 21 carrying the dust collector 22 is then moved along the elongated structure A, and the movable booth 21 surrounds the welding location of the structure A, including a part of the structure A.

In this state, welding worker B performs welding work on structure A in movable booth 21 using torch 34.

The welding fume generated during this welding work is transferred to the mobile booth 2.
The smoke is collected in the left and right smoke hoods 29 on the ceiling 21a.
The smoke is absorbed through the duct 30 and collected by the dust collector 22.

In this way, the movable booth 21 is electrically moved sequentially along the elongated structure A while welding the structure A.

Here, the movable booth 21 equipped with the dust collector 22 merely surrounds the welded part of the long structure A, including a part of the structure A, and is different from the conventional local dust collection shown in FIG. Although it is larger than the device 1, it is much smaller than the fixed large dust collector 7 shown in FIG. It becomes economical.

In addition, since the mobile booth 21 is electrically driven and can be easily moved to the welding work location of the structure A, the worker B
In addition to eliminating the hassle of moving the structure by hand, it also eliminates the need to carry in the long structure A as in the case of a fixed type, and the welding work can be done easily within the movable booth 21. Overall efficiency will improve.

Furthermore, since the movable booth 21 surrounds the welding area of the structure A from the upper surface to the left and right sides, including a part of the structure A, and the welding work is performed within the movable booth 21, the welding that occurs during welding The fume can be reliably collected by two smoke hoods that leak from inside the mobile booth 21 to the outside, and by the dust collector 22 through the duct 30 and the dust can be effectively collected and treated, reducing the environment around the welding work site. You will be able to make improvements.

Furthermore, since the welding machine 32 is mounted on the movable booth 21, the torch cable 33 is always of a constant length and does not have to be routed around, improving the safety of the feet.

Note that the present invention is not limited to this embodiment, and a better working environment can be realized by providing a spot cooler (not shown) in the mobile booth 21, for example, as a countermeasure against the summer heat.

In addition, in order to relieve the feeling of pressure on the welding workers working inside the movable booth 21, a transparent colored curtain 25 is used around the movable booth 21, and lighting (not shown) is further provided inside the movable booth 21. Good too. Various changes may be made without departing from the gist of the Ikensui invention.

〔Effect of the invention〕

Since the mobile local dust collector of the present invention is configured as described above, the equipment is relatively simple and economical, and it can be easily moved to the welding work site of a long structure without any trouble. Practical technology that allows welding work to be carried out more efficiently, and that the welding fumes generated during welding work can be reliably collected and smoked without leaking, allowing for effective dust collection and treatment, improving the environment around the welding work site. Becomes excellent in sex.

[Brief explanation of the drawing]

Figures 1 and 2 show one embodiment of the present invention, with Figure 1 being a perspective view of a mobile local dust collector, and Figure 2 showing the internal structure of the local dust collector with some parts omitted. A sectional view, FIG. 3 is a perspective view showing a conventional small-sized mobile local dust collector, and FIG. 4 is a perspective view of a conventional large-scale stationary dust collector. A... Structure, 21... Mobile booth, 22... Dust collector, 35.36.37... Electric booth moving means (3
5...Rail, 36...Wheel, 37...Cable). Applicant's agent Patent attorney Takehiko Suzue

Claims (1)

[Claims] A mobile local dust collector that collects welding fumes generated during welding work on long structures, absorbs smoke, and collects dust. a movable booth capable of welding work; a dust collector that is movably mounted on the movable booth and that collects welding fumes generated during welding work of structures from inside the booth by sucking the fumes; A mobile local dust collector comprising: electric booth moving means for moving the mobile booth along the longitudinal direction of a structure in accordance with a welding location.