KR100263620B1 - Travel truck - Google Patents

Abstract

The present invention exhibits a sufficient traction force by a large suction force when performing a welding operation or a cutting operation, and also a small suction force when non-working, to reduce the load during transportation, and also corresponding to the working state of the auxiliary magnet It is an object of the present invention to provide a traveling cart which can run by enhancing the holding force held by the traveling cart against the to-be-worked material by increasing the adsorption force and exhibiting a stable traction force.

The main magnet 7 is moved inside the main body 1 of the traveling cart A on which the welding torch or the cutting torch can be mounted to move toward or away from the bottom plate 1b by the lever 9. At the same time, the auxiliary magnet unit facing the surface of the workpiece Cb on the outside of the main body 1 is detachable by a detachable means.

Description

Cart

1 is a front view for explaining the configuration of a first embodiment of a traveling cart according to the present invention.

2 is a cross-sectional view for explaining the internal configuration of the travel truck.

3 is a diagram for explaining a state when the main magnet approaches the bottom.

4 is a view for explaining a state when the main magnet is spaced apart from the bottom.

5 (a) is a plan view showing the structure of the auxiliary magnet unit of the first embodiment, and (b) is a front view of (a).

6 is a front view for explaining the configuration of a second embodiment of a traveling cart according to the present invention.

7 (a) is a plan view showing the structure of the auxiliary magnet unit of the second embodiment, and (b) is a front view of (a).

* Explanation of symbols for main parts of the drawings

A: Travel cart B: Welding torch

Ca: Worked material (guide member) Cb: Worked material (traveling material)

1: Main body 1a: Upper case

1b: bottom plate 2: pussy

3: drive device 3a: motor

3b: reducer 4a, 4b: shaft

5a: gear 5b: timing belt

6: wheel 7: main magnet

8: lever 9: shaft

10: hinge 11: blanket

12: auxiliary magnet unit 13: fixing screw

14: auxiliary magnet body 14a: adsorption surface

15 case 16: vertical plate

16a: hole 17: knob

18: auxiliary magnet unit 19: detachable means

20: case 21: screw

22: insertion gap 23: coupling jig

23a: top plate 23b: screw hole

24: support member 24a: hole

24b: bar 25: set screw

26: guide roller 26a: roller

27a, 27b: set screw 28: shaft

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a traveling trolley equipped with a welding torch or a cutting torch, and more particularly to a traveling trolley that exhibits traction according to the attraction force of a magnet.

Recently, a welding torch or a cutting torch is mounted on a trolley, and the torch is operated in accordance with the running of the trolley to perform a welding work or a cutting work. Such a trolley needs to exert sufficient traction to pull various hoses and power cords according to the work content at the time of traveling. In addition, it is common to change the working position frequently for welding or cutting work using a trolley.

In the trolley | bogie used for the said operation, there exists the opposite request of weight reduction and increasing traction force. In other words, in order to increase the traction force, it is necessary to increase the weight of the whole vehicle and to employ a powerful motor. In this case, there is a limit to reduction in weight.

For this reason, the trolley | bogie which has comprised the wheel by the magnet or provided the magnet inside the main body is provided. In such a trolley | bogie, a towing material is attracted by a magnet, the traction force is increased, and weight reduction of a trolley | bogie is aimed at.

In the trolley | bogie which consists of a wheel with a magnet, it is common for the wheel to make point contact with a to-be-run material, and the surface of a wheel is knurled to prevent slip. For this reason, there is a problem that sufficient traction force cannot be obtained even if the weight of the vehicle can be reduced.

In addition, in a trolley provided with a magnet inside the main body, a relatively large space (air gap) is generated between the suction surface of the magnet and the driven material, so that the magnet is an electromagnet, and the space is limited by the dimensions of the trolley. It is difficult to exert sufficient traction. In addition, when a permanent magnet is used as a magnet, sufficient traction can be exerted. However, when transporting the trolley, a large force is required to remove the trolley from the driven material, and the burden on the operator is increased, There is a problem that the iron pieces are adsorbed and must be cleaned every time they are used.

An object of the present invention is to exhibit a sufficient traction force by a large adsorption force during work, and to reduce the burden during transportation by reducing the adsorption force during non-working, and also equipped with an auxiliary magnet corresponding to the working state, By increasing the adsorption force, it is possible to enhance the holding force held by the traveling cart against the to-be-worked material and to provide a traveling cart that can run with stable traction.

In order to solve the above problems, a traveling cart according to the present invention includes a magnet disposed inside the main body of a traveling cart and a moving means for moving the magnet, in the traveling truck equipped with a welding torch or a cutting torch. It is composed.

In the traveling cart, it is preferable that the moving means moves the magnet in a direction of approaching or spaced apart from the bottom of the traveling cart body.

In addition, the traveling cart according to the present invention includes a welding torch or a cutting torch, which travels on the to-be-worked material, and allows the inside of the traveling cart body to approach or be spaced apart from the bottom of the traveling cart. The main magnet is arranged to be movable by the moving means in the direction, and at the same time, the auxiliary magnet, which is opposed to the surface of the to-be-traveled member, is detachable from the main body of the traveling cart.

In addition, the traveling cart according to the present invention, in the traveling trolley equipped with a welding torch or a cutting torch, can rotate a guide roller which abuts against the guide member and guides the traveling of the traveling trolley to the main body of the traveling trolley. It is installed so that the support position of the guide roller is changed to correspond to the guide member.

In the traveling cart, the main magnet is arranged inside the main body and the main magnet is moved by the moving means. Therefore, when the main magnet is brought close to the driven material by operating the moving means, the air gap is reduced. It is possible to apply a large adsorption force, thereby exhibiting a large traction force.

In addition, when the main magnet is separated from the workpiece by operating the moving means, it is possible to increase the air gap and to apply a small suction force, thereby making it easier to remove the traveling cart from the driven material.

In addition, since the auxiliary magnet is detachably attached to the outside of the main body of the traveling cart, when the auxiliary magnet is mounted so as to face the traveling material by the detachable means, the suction force of the auxiliary magnet is added to the suction force of the main magnet. Therefore, it becomes possible to increase the suction force corresponding to the working state of the traveling cart, to increase the holding force held by the traveling cart against the to-be-worked material, and to increase the traction force. In addition, in the case where the auxiliary magnet is separated, it is possible to restore the adsorption force when only the main magnet is operated.

In addition, by setting the guide roller at a predetermined angle with respect to the travel cart and supporting it on the main body of the travel cart, the guide roller can be brought into contact with the guide surface at a predetermined position of the guide member to guide the travel of the travel cart.

Hereinafter, an embodiment of a traveling cart according to the present invention will be described with reference to the drawings. 1 is a front view for explaining the configuration of the first embodiment of the travel cart according to the present invention, FIG. 2 is a cross-sectional view for explaining the internal configuration of the travel cart, and FIG. 3 is a view for explaining the state when the main magnet approaches the bottom. 4 is a view for explaining a state when the main magnet is separated from the bottom, FIG. 5 (a) is a plan view showing the configuration of the auxiliary magnet unit of the first embodiment, and FIG. 5 (b) is a plan view of FIG. 5 (a). Front view.

First, the first embodiment will be described using FIGS. 1 to 5. The traveling cart A shown in the figure is comprised by the welding cart which mounts the welding torch B, and fillet- welds the workpieces Ca and Cb. Further, the traveling truck according to the present invention may be used as a cutting truck by mounting a gas cutting torch or a plasma cutting torch instead of the welding torch B. Hereinafter, in the present embodiment, the traveling cart A will be described as a truck dedicated to welding.

In addition, the workpiece Cb serves as a traveling member on which the traveling cart A travels, and the workpiece Ca contacts the guide roller provided in the traveling cart A, and the traveling truck A It also serves as a guide member for guiding driving.

In the figure, the main body 1 of the traveling cart A is comprised of the upper case 1a and the bottom plate 1b, and the support part 2 which supports the welding torch B on the upper part of the upper case 1a. ) Is installed. And it is comprised so that this torch B can be mounted by attaching and fixing the welding torch B to the support part 2. As shown in FIG.

Inside the main body 1, the drive device 3 which consists of the motor 3a and the speed reducer 3b is arrange | positioned. In addition, two shafts 4a and 4b are rotatably arranged in the front and rear direction inside the main body 1, and the shaft 4a is connected to the drive device 3 via the gear 5a, and the shaft 4b is connected to the shaft 4a via the timing belt 5b. In addition, rubber wheels 6 are fixed to the shafts 4a and 4b, respectively.

Therefore, when the motor 3a is driven, the rotation of the motor 3a is transmitted from the gear 5a to the shaft 4a via the speed reducer 3b and also from the timing belt 5b to the shaft 4b. do. Then, the four wheels 6 rotate to drive the main body 1. At this time, since the wheels 6 are each formed of rubber, the contact friction with the workpiece (the traveling member) Cb is large, and therefore, a large traction force can be exhibited.

The main magnet 7 which is movable in the direction approaching or spaced apart from the bottom plate 1b is disposed approximately in the center of the main body 1. As the main magnet 7, permanent magnets made of ferritic steel are used. The bottom plate 1b is made of a nonmagnetic material such as aluminum or stainless steel.

The lever 8 which comprises the moving means of the main magnet 7 is arrange | positioned outside the main body 1. As shown in FIG. The shaft 9 is fixed to the front end of the lever 8, and the hinge 10 is fixed at a position corresponding to the upper side of the main magnet 7 of the shaft 9. The hinge 10 is coupled to the blanket 11 installed on the upper portion of the main magnet (7), the blanket 11, the main magnet (7) to the bottom plate (1b) in accordance with the rotation of the hinge (10) It is configured to be accessible or spaced apart.

Thus, by rotating the lever 8 around the shaft 9 to select the position of the solid line and the dashed-dotted line shown in FIG. 1, the main magnet 7 is bottomed in correspondence with the position of the lever 8. The bottom plate 1b may be approached or spaced apart.

That is, when the lever 8 is in the position of the solid line shown in FIG. 1, as shown in FIG. 3, the main magnet 7 approaches the bottom plate 1b, and in this state, the main magnet 7 The air gap with the workpiece Cb is a minimum value (about 6 mm). Further, when the lever 8 is in the position of the dashed-dotted line shown in FIG. 1, as shown in FIG. 4, the main magnet 7 is spaced apart from the bottom plate 1b, and the air gap is the maximum value (about 25 mm). )

On the outside of the main body 1 of the travel truck A, the auxiliary magnet unit 12 having a length in the longitudinal direction corresponding to the width of the travel truck A, facing the surface of the workpiece Cb, is detachable. It is comprised so that attachment and detachment are possible by the fixing screw 13 used as a means.

As shown in FIGS. 5A and 5B, the auxiliary magnet unit 12 includes a case 15 accommodating the auxiliary magnet body 14 and a vertical plate 16 installed upright on the case 15. It consists of the handle 17 arrange | positioned and fixed at right angles with respect to the perpendicular | vertical board 16. As shown in FIG.

A hole 16a for inserting the fixing screw 13 is drilled at a predetermined position of the vertical plate 16. The fixing screw 13 is attached to a screw hole provided in the main body 1 through the hole 16a. By combining and fixing, the auxiliary magnet unit 12 can be fixed to the running cart A. The fixing screw 13 is loosened so that the auxiliary magnet unit 12 can be separated from the running cart A. As shown in FIG.

In addition, the auxiliary magnet body 14 is composed of a permanent magnet made of ferride steel like the main magnet (7) described above. Then, when the auxiliary magnet unit 12 is mounted on the travel cart A, the suction surface 14a of the auxiliary magnet body 14 is set to be approximately the same height as the bottom plate 1b of the travel cart A. It is.

In the traveling truck A according to the present embodiment, the traveling truck A is installed on the workpiece Cb set horizontally, and the torch B is mounted without the auxiliary magnetic unit 12 mounted. In the absence of the state, when the main magnet 7 is closest to the bottom plate 1b, the force required to detach the main body 1 from the workpiece Cb is about 19 kg, and the main magnet 7 is attached to the bottom plate 1b. The force required to detach the main body 1 at the most distance from the target was about 10 kg.

Here, since the weight of the main body 1 is about 8Kg, the maximum adsorption is about 11Kg, and the minimum adsorption force is about 2Kg. That is, by making the air gap between the main magnet 7 and the workpiece Cb about 4 times, the adsorption force can be made about 1/5.

For this reason, when the torch B is mounted on the main body 1 and the welding work is carried out, it is possible to pull the hoses and the power cable connected to the torch B with sufficient traction force. When the moving cart A is completed, the main body 7 can be separated from the work piece Cb with a small force by rotating the lever 8 to separate the main magnet 7 from the bottom plate 1b.

In addition, in the traveling cart A when the auxiliary magnet unit 12 is attached, the traveling cart A is provided on the workpiece Cb set horizontally as described above, and the torch B is mounted. In the state where it is not mounted, the force required to detach the main body 1 from the workpiece Cb when the main magnet 7 approaches the bottom plate 1b is about 31 Kg, and the main magnet 7 is attached to the bottom plate 1b. ), The force required to detach the main body 1 was about 22 Kg. That is, the adsorption force added by mounting the auxiliary magnet unit 12 is about 12 Kg.

Here, since the weight of the main body 1 including the auxiliary magnet unit 12 is about 10 Kg (the weight of the auxiliary magnet unit 12 is 2 Kg), the maximum adsorption force is about 21 Kg, and the minimum adsorption force is about 12 Kg. That is, by mounting the auxiliary magnet unit 12, the adsorption force of about 1.9 times at the time of maximum adsorption of the main magnet 7 and about 6 times at the time of minimum adsorption can be enhanced.

For this reason, when the torch B is mounted on the main body 1 and the welding work is carried out, the towing force and the power cable connected to the torch B can be pulled, and the towing B can be pulled out. Even when the welding operation is performed by transverse travel in the state in which (A) is inverted on the vertical plate surface, the traveling cart A can travel stably on the vertical plate surface, and the traveling cart A falls off on the vertical plate surface. There is no work.

In addition, when the work cart is moved and the moving cart A is moved, the lever 8 is rotated to separate the main magnet 7 from the bottom plate 1b so that the main body 1 is separated from the workpiece Cb with a small force. If the auxiliary magnet unit 12 is separated, the running cart A can be made lighter.

Here, the validity of the auxiliary magnet unit 12 will be described. As described above, by moving the main magnet 7 installed in the main body of the traveling cart A, the adsorption force to the workpiece (the traveling member) Cb can be changed, and when the welding operation or the cutting operation is performed, The suction force can be increased to sufficiently pull the hose or cable, and when the traveling cart A is moved, the suction force can be reduced to facilitate the separation from the workpiece (the running material) Cb.

However, only by moving the main magnet 7 there is a problem that it is difficult to increase or decrease the holding force held by the workpiece (the traveling material) Cb in correspondence with the working state.

That is, the dimension of the main magnet 7 arranged in the main body of the traveling cart A is determined according to the dimension of the traveling cart A, and the suction force of this main magnet 7 is determined to be the only value according to the specification at the time of manufacture. do. Therefore, the adsorption force acting between the traveling truck A and the work piece (working material) Cb is a work material (a traveling object) between the main magnet 7 having a constant suction force and the adsorption surface of the main magnet 7. (Cb) is determined by the distance from the surface, and the holding force for which the traveling truck A is held relative to the workpiece (the traveling material) Cb is determined by the suction force and the weight of the parking truck A itself. Is determined.

And when the said holding force is large, the contact friction with respect to the surface of the to-be-processed material (traveling material) Cb of the traveling wheel 6 of the traveling truck A increases, and the traction force increases. The traction force is the self-weight of the running cart (A) when the driving cart (A) is lowered or horizontal driving, and the self-weight of the running cart (A) when the driving cart (A) is driving up Act as a minus Therefore, the holding force changes depending on the working state of the traveling cart A.

Here, the mass of the traveling cart including the main magnet 7 is M, the gravitational acceleration is g, the inclination angle with respect to the horizontal plane of the workpiece (the traveling material) Cb is θ, and the traveling cart is drawn by the suction force of the main magnet 7. Adsorption force acting between (A) and the work piece (traveling material) Cb is f (constant), and the holding force A is maintained with respect to the work piece (working material) Cb by F (F = f + Mg x cos θ). ①}.

That is, in the case where the traveling truck A travels on the horizontal workpiece (the traveling material) Cb that is horizontal, {F = f + Mg} becomes {F = f + Mg} when {θ = 0 °} is substituted in the above ① expression. The holding force A is large with respect to the workpiece (the traveling material) Cb and stable running is possible, but the traveling vehicle A is inclined to the workpiece (the traveling material) Cb or vertically. In the case of traveling on the installed work piece (working material) Cb, for example, {F = f} when {θ = 90 °} is substituted into the above ① expression, the traveling cart A becomes the work material ( Holding force with respect to the to-be-run material Cb becomes small, and stable running becomes difficult.

Therefore, when the inclination angles of the workpiece (working material) Cb when the traveling cart A performs work differ, it is difficult to exert the same holding force by the same main magnet 7. The running stability of the trolley | bogie A and the traction force which pulls a hose, a cable, etc. differ, and it is difficult to run the traveling trolley | bogie A stably on the same conditions.

In addition, in the case of carrying out work in the transverse state in the state where the traveling cart A is inverted on the work piece (traveling material) Cb constituted on the vertical plate surface, a hose or a cable to be towed to the traveling cart A, etc. Accordingly, when the moment load acts in the direction opposite to the adsorption force of the main magnet 7 installed on the travel truck A to the workpiece (working material) Cb, the travel truck A is the workpiece (the The holding force (here, the same as the adsorption force) held against the traveling member (Cb) decreases, the traction force of the traveling vehicle A decreases, and the traveling vehicle A is placed on the workpiece (the traveling member) Cb. In the worst case, there is a fear that the traveling truck A is turned over from the workpiece (working material) Cb and falls off.

Therefore, the auxiliary magnet exerting the adsorption force on the outside of the main body of the traveling cart A can be detachably attached, so that the adsorption force of the auxiliary magnet as necessary for the adsorption force of the main magnet 7 is made to correspond to the working state of the traveling cart A. In addition, it is possible to increase the holding force held by the traveling truck A relative to the workpiece (the traveling member) Cb, and to increase the traction force for pulling the hose, the cable, or the like. As a result, the traveling cart A can be driven in a stable state.

Therefore, the predetermined auxiliary magnet unit 12 is attached to the travel truck A even when the vehicle travels in the state in which the travel truck A is inverted on the workpiece (working material) Cb having a vertical plate surface. Thus, the traveling cart A can be stably traveled on the workpiece (working material) Cb constituted on the vertical plate surface, and the traveling cart A is inverted and the work material (working material) Cb There is no fallout from the stomach. As described above, by configuring the auxiliary magnet unit 12 so as to be mounted on the travel cart A, the travel cart A can be stably traveled in response to various work conditions.

Next, a configuration for guiding the running of the traveling cart A will be described. Guide rollers 26 shown in FIG. 1 are rotatably provided on both front and rear sides of the main body 1 of the traveling truck A. FIG. At the tip end of the guide roller 26, a roller 26a is provided which can rotate freely and contact the guide member (working material) Ca. The other end of the guide roller 26 has a shaft 28 ), And is fixed with a set screw 27a or a set screw 27b.

When the guide roller 26 is fixed by the fixing screw 27a, for example, the height of the roller 26a is set to a height of about 15 mm from the surface of the workpiece (workpiece) Cb, and the fixing screw ( 27b), the height of the roller 26a is set to a height of about 80 mm from the surface of the workpiece (workpiece) Cb.

The hull material may be formed with a drain hole at a predetermined position of the guide member (working material) Ca. The guide roller is used when the traveling cart A is used in a horizontal state. (26) is fixed with the set screw 27a or the set screw 27b to abut the roller 26a at a position below or above the drain hole, thereby avoiding the drain hole to drive the running cart A. It is supposed to be possible.

Further, in the case where the traveling material (workpiece) Cb is constituted by a vertical plate and the traveling material A is inverted, the traveling material (workpiece) Cb is transversely traveled and used. When the projection dimension from the traveling member (working material) Cb of the member (working material) Ca is larger than 15 mm and smaller than 80 mm, the guide roller 26 is fixed and used with the fixing screw 27a. At this time, since the center point of the travel cart A becomes more than the height (15 mm) of the roller 26a, and the travel cart A is easy to fall, when the auxiliary magnet unit 12 mentioned above is attached, the travel cart A is carried out. It is possible to run stably by preventing the fall of).

In addition, when the protrusion dimension from the traveling material (work material) Cb of the guide member (work material) Ca is larger than 80 mm, the guide roller 26 is fixed and used by the fixing screw 27b. At this time, the center point of the travel cart A may be within the height (80 mm) of the roller 26a, and the travel cart A can be stably run even if the auxiliary magnet unit 12 is not mounted.

Next, a second embodiment of a traveling cart according to the present invention will be described with reference to FIGS. 6 and 7. FIG. 6 is a front view for explaining the configuration of the second embodiment of the traveling cart according to the present invention. FIG. 7 (a) is a plan view showing the configuration of the auxiliary magnet unit of the second embodiment, and FIG. front view of a). The same members as those in the first embodiment are denoted by the same reference numerals and will not be described.

On the outside of the main body 1 of the parking cart A configured as described above, an auxiliary magnet unit having a length in the longitudinal direction corresponding to the width of the travel cart A and facing the surface of the workpiece Cb. (18) is comprised so that attachment / detachment is possible by the removal means (19). The auxiliary magnet unit 18 is equal to the weight of the auxiliary magnet unit 12 of the above-described first embodiment and exhibits the same adsorption force as the auxiliary magnet unit 12.

The auxiliary magnet unit 18 includes a case 20 for accommodating and holding the auxiliary magnet body 14 as shown in FIGS. 7A and 7B, and screws 21 to the case 20. It is fixed and comprised by the engagement jig 23 which provided the predetermined | prescribed insertion gap 22 between the case 20. As shown in FIG.

In addition, a support member 24 having a hole 24a installed at a predetermined position is fixed to the side surface of the main body 1 of the travel truck A, and the support member 24 corresponds to the insertion gap 22. The bar 24b is fixed.

Then, after the bar 24b is inserted into the insertion gap 22, the fixing screw 25 is screwed into the screw hole 23b laid in the upper plate 23a of the engaging jig 23, and the fixing screw 25 The auxiliary magnet unit 18 can be attached to the running cart A by holding the bar 24b at the distal end, and releasing the fixing screw 25 and releasing the bar 24b from the insertion gap 22. The auxiliary magnet unit 18 can be detached from the travel cart A. As shown in FIG.

As in the first embodiment described above, when the auxiliary magnet unit 18 is mounted on the travel cart A, the suction surface 14a of the auxiliary magnet body 14 is the bottom plate 1b of the travel cart A. It is set to be almost the same height on the lower surface. The other configuration is configured similarly to the first embodiment described above, and the same effects as described above can be obtained.

In addition, the value of the adsorption force shown in each said Example is a measured value in the running truck A which concerns on a present Example, It is not limited to this adsorption force. That is, the values of the adsorption force when the main magnet is moved and the adsorption force when the auxiliary magnet unit is attached are values to be appropriately set according to the size of the traveling cart set at the design stage, the loading capacity of the torch, and the like.

In each of the above embodiments, the detachable means when the auxiliary magnet unit is mounted on the traveling cart A is constituted by a fixing screw 13 or a detachable means 19 composed of a coupling jig 23 and a support member 24. However, it can be configured with a variety of other removable means. For example, although not shown in the drawing, the auxiliary magnet unit can be detachably attached by sliding to a detachable rail installed on the main body 1 of the travel cart A, or the auxiliary magnet unit can be detached by manipulating a buckle installed on the main body 1. Known detachment means is applicable.

In each of the above embodiments, the case where the to-be-processed material is constituted by the workpiece Cb has been described. However, while the travel cart A travels on the to-be-processed material adjacent to the workpiece, The mounted torch can also be configured to perform various processing on the workpiece.

In the above-described embodiment, the case where the moving means for moving the main magnet 7 is constituted by the lever 8, the shaft 9, and the hinge 10 has been described. For example, a spring is installed between the upper case 1a or the bottom plate 1b and the main magnet 7 to compress or stretch the spring to access the main magnet 7 to the bottom plate 1b. Alternatively, the main magnet 7 may be spaced apart or approaching the bottom plate 1b by being spaced apart and releasing the deformation of the spring. In any case, the purpose of the moving means is to move the main magnet 7 to approach the bottom plate 1b, and any configuration may be employed as long as this object can be achieved.

As described in detail above, in the traveling cart according to the present invention, the adsorption force on the traveling material (working material) can be changed by moving the main magnet installed in the main body. For this reason, by attracting the main magnet to the bottom plate of the main body, the adsorption force can be increased, and the adsorption force can be reduced by separating the main magnet from the bottom plate.

Therefore, when carrying out a welding operation or a cutting operation | work, a suction force can be enlarged enough to pull a hose or a cable sufficiently, and when a traveling truck is moved, a suction force can be made small and it is easy to be separated from a to-be-processed material. For this reason, welding and cutting are carried out in a stable state, and at the same time, no heavy burden is imposed on the operator during movement.

In addition, by attaching and detaching the auxiliary magnet to the outside of the main body, it is possible to add the suction force of the auxiliary magnet to the suction force of the main magnet, to increase the holding force held by the traveling cart against the driven material, and to pull a hose or a cable. The traction can be increased. Therefore, the traveling cart can be driven in a constant and stable state by attaching an auxiliary magnet having a predetermined attraction force corresponding to the working condition of the traveling cart.

In addition, in the case of running in the state where the traveling cart is inverted on the vertical plate, a predetermined auxiliary magnet is mounted on the traveling bogie, so that the traveling bogie can be stably run on the vertical plate, and the traveling bogie is inverted and vertically. It does not fall off from the board surface.

Further, by setting the guide roller at a predetermined angle with respect to the travel cart and supporting it on the main body of the travel cart, the guide roller can be brought into contact with the guide surface at a predetermined position of the guide member to guide the travel of the travel cart. Therefore, the running cart can be smoothly driven without being influenced by the drain hole formed in the guide member (workpiece).

Claims (2)

(Single-correction) A traveling trolley equipped with a welding torch or a cutting torch to travel on a work piece, wherein the magnet is disposed inside the main body of the traveling trolley and the working material on which the traveling trolley moves the magnet. And moving means for moving in a direction to be spaced apart or close to each other. When the magnet is moved to the bottom surface of the traveling cart body by operating the moving means, a large suction force is applied to the workpiece, and the magnet is brought into the predetermined surface. When the space is separated from the traveling cart, characterized in that configured to apply a small suction force to the workpiece (Two-time correction) The guide roller according to claim 1, wherein a guide roller is provided in the main body by a shaft, the guide roller which abuts on a guide member disposed outside on the workpiece and guides the traveling of the travel truck, and rotates about the shaft. A traveling cart characterized in that the height of the roller provided at the tip of the roller can be changed.