JP2020189321A - Traveling carriage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a traveling carriage capable of improving operability when changing the protruding dimension of a guide roller from a carriage main body. SOLUTION: The traveling carriage A is equipped with a welding torch B or a cutting torch, and travels on the horizontal steel plate C while pressing a plurality of guide rollers 11 against a vertical steel plate D which stands substantially vertically from the horizontal steel plate C. A support arm 20 that is slidably attached to the traveling carriage A, has guide rollers 11 rotatably provided at the front and rear tip portions in the traveling direction, and is formed in a substantially C shape in a polygonal or curved shape. , The shaft portions 24a, 24b in which the relative positions of the members having the elongated holes 20a and 20b that define the slide movement direction of the support arm 20 and the elongated holes 20a and 20b change along the inside of the elongated holes 20a and 20b. And, characterized by having. [Selection diagram] Fig. 1

Description

In the present invention, the first is equipped with a welding torch or a cutting torch, and a plurality of guide rollers are pressed against a second steel plate (hereinafter, also referred to as "guide steel plate") which stands up substantially vertically from the first steel plate. It relates to a traveling torch that runs on a steel plate.

In the process of relatively moving a work material made of steel plate or stainless steel plate and a torch such as a plasma welding torch or carbon dioxide gas welding torch, or a plasma cutting torch or gas cutting torch, the torch is operated to weld or cut. It is being processed. This processing may be performed using a traveling carriage equipped with a welding torch or a cutting torch. That is, it is possible to perform the desired processing by operating the mounted welding torch or cutting torch while traveling the traveling carriage along a preset welding line or cutting line.

When the traveling carriage is driven along the target welding line or cutting line, a rail arranged along the target welding line or cutting line is used, and the wheels of the traveling carriage are mounted on this rail for traveling. There is a method in which a guide steel plate erecting along a target welding line or cutting line is used, and a guide roller of a traveling carriage is pressed against the guide steel plate to run the vehicle. In particular, in the method using guide rollers, support arms with guide rollers attached to the tips are arranged at the front and rear ends of the traveling carriage in the traveling direction so as to project substantially horizontally, and the protruding dimensions of each support arm are adjusted. The lines connecting the roller tops of each guide roller are crossed on the downstream side with respect to the driving direction of the wheels of the traveling carriage.

In the traveling bogie configured as described above, when the guide rollers provided before and after the traveling direction are brought into contact with the upright guide steel plate, the driving direction of the wheels intersects the guide steel plate. Therefore, when the traveling carriage is driven in this state, each guide roller presses against the guide steel plate to rotate due to a part of the force accompanying the traveling of the traveling carriage, and as a result, the traveling carriage slips on the wheels while rotating on the other side. It runs along the surface of the steel plate. However, when the traveling carriage in the above state is changed so that the driving direction is opposite, the traveling carriage travels in a direction away from the surface of the other steel plate. For this reason, a traveling carriage that can easily respond to a change in the traveling direction has been proposed.

In Patent Document 1, a plurality of mounting brackets provided with guide rollers attached to the tips of support arms provided before and after the traveling direction of the traveling carriage are rotatably provided, and fixing pins provided on the mounting brackets are provided on the support arm. The protruding dimension of the guide roller from the bogie body is changed by selectively fitting it into the hole.

Patent Document 2 has an arm rotatably connected to a shaft hole of a bogie body via a hinge shaft, and rotatably provided copying rollers are provided at both ends of the arm. The rotation of the arm is regulated by pins located at the front and rear ends of the bogie body, and the protruding dimension of the copying roller from the bogie body is changed.

Japanese Unexamined Patent Publication No. 2013-215779 Japanese Unexamined Patent Publication No. 2000-23327

However, in Patent Document 1, when the protruding dimension of the guide roller from the bogie body is changed, the fixing pin must be inserted and removed, and improvement in operability has been desired. Further, in Patent Document 2, the arm rotates about the hinge shaft, and the pins that regulate the rotation of the arm are replaced without performing troublesome operations to change the protruding dimension of the copying roller from the bogie body. It is easy to operate because it can be used, but there has also been a demand for a traveling bogie that can specify the protruding dimensions of the guide roller from the bogie body with a simpler configuration without providing a hinge shaft.

The present invention solves the above-mentioned problems, and an object of the present invention is to provide a traveling carriage having a simpler configuration and improved operability when changing the protrusion dimension of the guide roller from the carriage body. is there.

A typical configuration of the traveling carriage according to the present invention for achieving the above object is to mount a welding torch or a cutting torch, and press-weld a plurality of guide rollers to a second steel plate that stands substantially vertically from the first steel plate. It is a traveling carriage that travels on the first steel plate while being slidably attached to the traveling carriage, and the guide rollers are rotatably provided at the front and rear tip portions in the traveling direction. A support arm formed in a substantially C shape with a curved shape or a curved shape, a member having an elongated hole that defines the direction of slide movement of the support arm, and a relative position of the elongated hole along the elongated hole. It is characterized by having a shaft portion that fluctuates.

According to the present invention, it is possible to improve the operability when changing the protruding dimension of the guide roller from the carriage body with a simpler configuration.

It is a top view which shows the structure of the traveling carriage of 1st Embodiment. It is a front view which shows the structure of the traveling carriage of 1st Embodiment. It is a right side view which shows the structure of the traveling carriage of 1st Embodiment. (A) is a plan view which shows the structure of the support arm. (B) is a front view showing the structure of the support arm. (C) is a back view showing the configuration of the support arm. (D) is a right side view showing the configuration of the support arm. (A) is a plan view showing another configuration of the support arm. (B) is a front view showing another configuration of the support arm. (C) is a back view showing another configuration of the support arm. (D) is a right side view showing another configuration of the support arm. It is a perspective view which shows the structure of the traveling carriage of 2nd Embodiment. It is a perspective view which shows the structure of the traveling carriage of 2nd Embodiment.

An embodiment of the traveling carriage according to the present invention will be specifically described with reference to the drawings.

[First Embodiment]
First, the configuration of the first embodiment of the traveling carriage according to the present invention will be described with reference to FIGS. 1 to 5. The traveling trolley A shown in FIGS. 1 to 3 is equipped with a welding torch B, and a plurality of guide rollers 11 are formed on a vertical steel plate D which is a second steel plate which stands substantially vertically from a horizontal steel plate C which is a first steel plate. It is configured as a welding device that runs on the horizontal steel plate C while being pressure-welded and fillet welds the intersecting portion between the horizontal steel plate C and the vertical steel plate D.

The traveling carriage A is provided with support arms 20 which are slidably attached to the casing 1 as the traveling carriage main body and have guide rollers 11 rotatably provided at the front and rear tip portions in the traveling direction. The support arm 20 has a polygonal shape and is formed in a substantially C shape.

The support arm 20 slides and moves along a substantially circumferential direction along the outer shape of the substantially C-shaped support arm 20. As shown in FIGS. 4A and 4C, the support arm 20 is provided with a pair of curved elongated holes 20a and 20b that define the sliding movement direction and the fixed position of the support arm 20. .. Each of the elongated holes 20a and 20b is composed of through holes penetrating the support arm 20.

As shown in FIG. 4, the elongated holes 20a and 20b penetrating the support arm 20 are formed in a curved shape, and as shown in FIG. 1, when the traveling carriage A is viewed from above, the axis of the welding torch B Curved elongated holes 20a and 20b are provided on the circumference 26 centered on the point P on the extension line 25.

A lower receiving portion 27 is provided on the upper portion of the wheel 2 on the vertical steel plate D side of the casing 1 as the main body of the traveling carriage, and the lower receiving portion 27 is inserted into the elongated holes 20a and 20b of the support arm 20. A shaft portions 24a and 24b whose relative positional relationship with the elongated holes 20a and 20b fluctuates are erected along the elongated holes 20a and 20b. A predetermined gap 29 is provided by a spacer 28 on the upper portion of the lower receiving portion 27, and the upper receiving portion 30 is provided.

The upper receiving portion 30 is made of aluminum and also serves as a protective cover for the support arm 20. The upper receiving portion 30 can prevent spatter scattered during welding or cutting from adhering to the support arm 20, and can reduce the influence of heat generated during welding or cutting on the support arm 20.

The spacer 28 is made of a tubular member, and has a through hole (not shown) provided in the upper receiving portion 30 and a screw hole (not shown) provided in the lower receiving portion 27 through which a bolt 12 is inserted into the hollow portion of the spacer 28. By fastening the bolt 12 to the lower receiving portion 27, the upper receiving portion 30 is bolted to the lower receiving portion 27 via the spacer 28. The head of the bolt 12 is provided with a hexagonal hole into which a hexagon wrench is inserted.

The support arm 20 slides along the extension line 26 of the circumference passing through the centers of the elongated holes 20a and 20b in the gap 29 provided between the lower receiving portion 27 and the upper receiving portion 30 via the spacer 28. It is provided so that it can be moved. Since the support arm 20 of the present embodiment is made of iron, if it comes into direct contact with the lower receiving portion 27 or the upper receiving portion 30, the frictional resistance is large and the support arm 20 cannot be easily slid. Therefore, the resin bush 15 is fitted into a through hole (not shown) provided through the support arm 20. The bush 15 projects vertically from the upper surface 20f and the lower surface 20g of the support arm 20, respectively. When the support arm 20 slides along the extension line 26 of the circumference passing through the centers of the elongated holes 20a and 20b, the resin bush 15, the lower receiving portion 27, and the upper receiving portion 30 come into contact with each other and slide. .. This reduces the frictional resistance when the support arm 20 slides along the extension line 26 of the circumference passing through the centers of the elongated holes 20a and 20b, and enables smooth slide movement.

Shaft portions 24a and 24b are projected at predetermined positions of the lower receiving portion 27, and the shaft portions 24a and 24b are elongated holes along the elongated holes 20a and 20b provided so as to penetrate the support arm 20. The relative positions with respect to 20a and 20b are variably provided. The support arm 20 is rotated around a point P on the extension line 25 of the axis of the welding torch B shown in FIG. 1, so that the elongated holes 20a of the shaft portions 24a and 24b are formed along the curved elongated holes 20a and 20b. , 20b can be slid and moved by changing its relative position. FIG. 1 shows a state in which the shaft portion 24a abuts on the wall surface 20a1 at one end of the elongated hole 20a and the shaft portion 24b abuts on the wall surface 20b1 at one end of the elongated hole 20b to define a fixed position of the support arm 20.

As shown in FIGS. 4A and 4C, the support arm 20 is provided with four positioning holes 20e1 to 20e4 as positioning means for defining the fixed position of the slide movement of the support arm 20. Reference numeral 17 is a circumference centered on the point P on the extension line 25 of the axis of the welding torch B, and indicates an extension line of the circumference passing through the center of each of the positioning holes 20e1 to 20e4. Ball plungers 30a and 30b having balls attached to the center pin portions are provided at positions of the upper receiving portions 30 facing the positioning holes 20e1 to 20e4, respectively.

The ball plungers 30a and 30b are provided so as to be urged downward by an urging means such as a coil spring (not shown) so as to be able to move up and down, and the support arm 20 is an extension of the circumference passing through the centers of the elongated holes 20a and 20b. When sliding along 26, the ball plungers 30a and 30b are provided so that their relative positions can be changed on the upper surface 20f of the support arm 20. When the positioning holes 20e1 to 20e4 reach the positions where the ball plungers 30a and 30b face each other, the ball plungers 30a and 30b are urged downward by an urging means such as a spring (not shown) to position the tip portion. Immerse yourself in the holes 20e1-20e4. The tips of the ball plungers 30a and 30b are formed in a spherical shape having an outer diameter larger than the diameter of the positioning holes 20e1 to 20e4, and are urged downward by an urging means such as a spring (not shown). When a force larger than the force is applied in the sliding movement direction of the support arm 20, the tips of the ball plungers 30a and 30b are opposed to the force urged downward by a urging means such as a spring (not shown). The relative positions of the support arm 20 on the upper surface 20f can be changed by detaching from the positioning holes 20e1 to 20e4.

As shown in FIG. 1, when the traveling carriage A travels in the direction of the arrow a, the shaft portion 24a abuts on the wall surface 20a1 at one end of the elongated hole 20a, and the shaft portion 24b hits the wall surface 20b1 at one end of the elongated hole 20b. In the contacted state, the ball plunger 30a is immersed in the positioning hole 20e2, and the ball plunger 30b is immersed in the positioning hole 20e4. Further, although not shown, when the traveling carriage A travels in the direction of the arrow b, the support arm 20 slides in the clockwise direction of FIG. 1 with respect to the point P and shafts on the wall surface 20a2 at the other end of the elongated hole 20a. In a state where the portion 24a is in contact and the shaft portion 24b is in contact with the wall surface 20b2 at the other end of the elongated hole 20b, the ball plunger 30a is immersed in the positioning hole 20e1 and the ball plunger 30b is immersed in the positioning hole 20e3. Will be done. This defines the fixed position of the support arm 20. The wall surfaces 20a1, 20a2, 20b1, 20b2 of the elongated holes 20a and 20b in the longitudinal direction also serve as positioning means for defining the fixed position of the slide movement of the support arm 20 by being abutted against the shaft portions 24a and 24b. Therefore, the positioning holes 20e1 to 20e4 and the ball plungers 30a and 30b provided in the support arm 20 can be omitted.

As shown in FIGS. 4 (b) and 4 (d), fixed pieces 20c and 20d hanging downward are provided at both ends of the substantially C-shaped support arm 20 so as to project toward the vertical steel plate D side of the casing 1, respectively. The fixing pieces 20c and 20d are provided with screw holes 20c1 and 20d1. On the other hand, each guide roller 11 is rotatably supported around a fastener 16 provided on the horizontal piece 31a of the substantially L-shaped support bracket 31 shown in FIG. The upright piece 31b of each support bracket 31 is provided with an elongated hole 31b1 formed of a through hole extending in the vertical direction. After adjusting the height position of each guide roller 11 in a state where the bolt 12 is inserted into each elongated hole 31b1 and screwed into the screw holes 20c1 and 20d1 provided in the fixing pieces 20c and 20d of the support arm 20. By screwing and fastening the bolts 12 to the screw holes 20c1 and 20d1, the standing pieces 31b of each support bracket 31 are fixed to the fixing pieces 20c and 20d of the support arm 20. As a result, each guide roller 11 can be rotatably fixed to both ends of the support arm 20 at a predetermined height position.

As shown in FIG. 1, the shaft portion 24a abuts on the wall surface 20a1 at one end of the elongated hole 20a, and the shaft portion 24b abuts on the wall surface 20b1 at one end of the elongated hole 20b, or, although not shown, the elongated hole 20a. The protruding dimension of each guide roller 11 from the casing 1 changes depending on whether the shaft portion 24a abuts on the wall surface 20a2 at the other end and the shaft portion 24b abuts on the wall surface 20b2 at the other end of the elongated hole 20b. Become. That is, by sliding the support arm 20 along the extension line 26 of the circumference passing through the centers of the elongated holes 20a and 20b, it is possible to adjust the entry and exit of each guide roller 11 from the casing 1, which is a simple operation. It is possible to surely set the entrance / exit dimensions according to the traveling direction.

In the above configuration, the lengths and bending directions of the elongated holes 20a and 20b are set by the preset angles α formed by the line 11a and the traveling reference line 1a shown in FIG. 1, the distance between the guide rollers 11, and the support arm 20. It is set according to the conditions such as shape.

A line 11a (the surface of the vertical steel plate D) connecting the roller tops of each guide roller 11 rotatably provided in the front-rear direction of the traveling carriage A shown in FIG. 1 and the traveling carriage A are provided with the guide roller 11 standing steel plate. The planned travel line (hereinafter referred to as "travel reference line") 1a when the vehicle is traveled in a free state without being pressed against D intersects with the downstream side in the travel direction. The angle α formed by the line 11a and the traveling reference line 1a is not limited, and depends on the conditions such as the pressure contact force of the guide roller 11 with respect to the vertical steel plate D generated by the traveling of the traveling carriage A and the target processing state. It is preferable to set as appropriate.

In the present embodiment, the angle α formed by the line 11a and the traveling reference line 1a is set to approximately 4 degrees, and the extension line 25 of the axis line of the welding torch B is orthogonal to the traveling reference line 1a of the traveling carriage A. Have been placed. Therefore, the welding torch B is set to approximately 4 degrees.

The vertical steel plate D to be the second steel plate may be arranged at a position parallel to the target welding line, and it is sufficient if the guide roller 11 can be pressure-welded to guide the traveling direction of the traveling carriage A. It does not ask how the horizontal steel plate C stands up and is fixed by any means. For example, when the target work is to butt-weld two steel plates, this steel plate has a function as a horizontal steel plate C, and is erected parallel to the butt-welded portion and fixed by point welding, or It is possible to form a vertical steel plate D by fixing it with a magnet.

When the target processing is fillet welding in which two steel plates are arranged substantially vertically and the crossed portions are welded as in the present embodiment, the steel plates arranged in the lateral direction are designated as horizontal steel plates C. A steel plate that rises substantially vertically from the horizontal steel plate C functions as a vertical steel plate D.

The traveling carriage A has a casing 1 provided with a drive motor and a magnet (not shown) inside, and a plurality of wheels 2 are arranged under the casing 1. On the upper part of the casing 1, a connector 3 for connecting the power supply shown in FIG. 3, a dial 4 for setting the speed shown in FIG. 1, a push button switch 5 for starting and stopping the traveling carriage A, and a welding torch. Operating devices such as a changeover switch 6 for selecting whether or not to process by B and a changeover switch 10 for switching the forward / backward travel direction of the traveling carriage A are arranged. Contact sensors 13 and 14 are arranged on the front and rear end faces of the casing 1 in the traveling direction, respectively, and when the traveling carriage A reaches a dog or the like provided at the traveling limit, a signal is emitted to stop the traveling carriage A. It is configured to be possible.

A stand 7 is provided on the upper portion of the casing 1, and a torch holder 8 for holding the welding torch B is attached to the stand 7. The torch holder 8 is configured so that the vertical position and the position in the direction of separation or approach to the vertical steel plate D (incoming / outgoing direction) can be adjusted by the handles 7a and 7b provided on the stand 7. Therefore, by operating the handles 7a and 7b of the stand 7, the welding torch B held by the torch holder 8 can be adjusted in the vertical direction and the direction of entry and exit from the side surface of the casing 1 and set at a desired position. ..

In the present embodiment, as shown in FIG. 3, the stand 7 is on the left side (casing 1) of the welding torch B toward the downstream side in the traveling direction of the traveling carriage A (in the present embodiment, the direction of arrow a, hereinafter also referred to as the forward direction). It is configured to be placed on the left side of). Further, reference numeral 9 denotes a handle, which is used by the worker when moving the traveling carriage A.

In the present embodiment, as described above, the angle α formed by the line 11a and the traveling reference line 1a is set to approximately 4 degrees. Therefore, for example, as shown in FIG. 1, the shaft portion 24a is in contact with the wall surface 20a1 at one end of the elongated hole 20a of the support arm 20, and the shaft portion 24b is in contact with the wall surface 20b1 at one end of the elongated hole 20b. By bringing each guide roller 11 into contact with the vertical steel plate D with the fixed position of the support arm 20 defined, the traveling reference line 1a of the traveling carriage A intersects the vertical steel plate D at approximately 4 degrees in the direction of the arrow a. To do. Further, although not shown, the support arm 20 is in a state where the shaft portion 24a is in contact with the wall surface 20a2 at the other end of the long hole 20a of the support arm 20 and the shaft portion 24b is in contact with the wall surface 20b2 at the other end of the long hole 20b. When each guide roller 11 is brought into contact with the vertical steel plate D in a state where the fixed position is specified, the traveling reference line 1a of the traveling carriage A intersects the vertical steel plate D at approximately 4 degrees in the direction of the arrow b.

As described above, in the traveling carriage A according to the present embodiment, the traveling carriage A is traveled in the direction of arrow a to be welded to the target welding line, and then traveled in the direction of arrow b to the new welding line. When welding, the protrusion dimension of each guide roller 11 from the casing 1 can be easily determined by a simple operation such as sliding the support arm 20 along the extension line 26 of the circumference passing through the centers of the elongated holes 20a and 20b. It is possible to adjust.

In this way, when changing the traveling direction of the traveling carriage A forward / backward, it is only necessary to slide the support arm 20 along the extension line 26 of the circumference passing through the centers of the elongated holes 20a and 20b. The traveling direction of the traveling carriage A can be changed with one touch without the need for the fixing pin insertion / removal operation or tools as in Document 1, and the operation when changing the protruding dimension of the guide roller 11 from the traveling carriage A main body. It is possible to improve the sex.

In Patent Document 2, the angle of the copying roller can be set to only one point in each of the front-rear directions, but in the present embodiment, as shown in FIG. 5, the positioning holes 20e provided in the support arm 20 are the positioning holes 20e1 and the positioning holes. By providing a plurality of positioning holes 20e5, 20e6, 20e7, 20e8 at a finer pitch between the positioning holes 20e3 and the positioning holes 20e4 between 20e2, the angle α formed by the line 11a and the traveling reference line 1a can be obtained. The angle can be set at two points, approximately 4 degrees and approximately 1.5 degrees. In addition, by providing a desired number of positioning holes 20e between the positioning holes 20e1 and the positioning holes 20e2 and between the positioning holes 20e3 and the positioning holes 20e4, it is possible to obtain approximately 4 degrees and approximately 3 degrees. It is possible to set angles at multiple points such as approximately 2 degrees and approximately 1.5 degrees.

<Modification example>
In the present embodiment, an example in which the support arm 20 is provided with the elongated holes 20a and 20b penetrating the support arm 20 has been described, but as a modified example, the elongated hole defining the slide movement direction and the fixed position of the support arm 20 A separate member having the above may be integrally provided on the support arm 20. At this time, a shaft portion whose position relative to the elongated hole fluctuates along each elongated hole is provided in the casing 1 as the main body of the traveling carriage. On the other hand, when a member having an elongated hole that defines the sliding movement direction and the fixed position of the support arm 20 is provided in the casing 1 as the main body of the traveling carriage, the shaft portion that slides in each elongated hole is a support arm. 20 is provided. Further, in the present embodiment, the support arm 20 is provided with two (plurality) elongated holes 20a and 20b, but a curved elongated hole is provided in the central portion of the support arm 20 formed in a substantially C shape. It is also possible to provide one and a plurality of shaft portions in the casing 1 whose position relative to the elongated hole fluctuates along the elongated hole.

Further, as a modification, a long hole that defines the slide movement direction and the fixed position of the support arm 20 is formed of a bottomed long hole (long groove) that does not penetrate the support arm 20, and is formed in the long hole. It is also possible to configure the shaft portion provided in the casing 1 so as to fluctuate relative to the elongated hole. Further, these elongated holes are not limited to two, and one or more elongated holes and a shaft portion sliding in the elongated holes can be provided.

Further, the support arm 20 may be formed in a curved shape and a substantially C shape. Further, a cutting torch may be mounted instead of the welding torch B.

[Second Embodiment]
Next, the configuration of the second embodiment of the traveling carriage according to the present invention will be described with reference to FIGS. 6 and 7. It should be noted that the same components as those in the first embodiment are designated by the same reference numerals or the same member names even if the reference numerals are different, and the description thereof will be omitted.

On the vertical steel plate D side of the casing 1 of the traveling carriage A of the present embodiment, a support member 41 having an L-shaped cross section covering the upper portion and the side surface of the wheel 2 is provided, and is formed on the vertical piece 41a of the support member 41. Bolts 12a and 12b are screwed into the screw holes (not shown). The shaft portion of each of the bolts 12a and 12b is inserted so as to be variably positioned relative to the elongated hole 42a along the elongated hole 42a provided so as to penetrate the support arm 42. The support arm 42 is substantially at the center in the longitudinal direction of the support arm 42, and both ends thereof are bent toward the vertical steel plate D side. The elongated hole 42a is provided along the longitudinal direction of the support arm 42 over substantially the entire length of the support arm 42. The support arm 42 is slidably attached to the traveling carriage A by changing the relative position of each of the bolts 12a and 12b with respect to the elongated hole 42a along the elongated hole 42a. There is. Fixed pieces 42c and 42d are provided at the front and rear tip portions of the support arm 42 in the traveling direction. In the screw holes (not shown) provided in the fixing pieces 42c and 42d, bolts 12 inserted into the elongated holes 31b1 provided in the standing pieces 31b of the support brackets 31 are screwed and fastened. A guide roller 11 rotatably supported by a fastener 16 is provided on the horizontal piece 31a of each support bracket 31.

The elongated hole 42a defines the direction of slide movement of the support arm 42. Further, the wall surfaces 42a1 and 42a2 (the wall surfaces 42a2 are not shown) at both ends of the elongated hole 42a in the longitudinal direction are fixed positions for sliding movement of the support arm 42 by abutting the shaft portions of the bolts 12a and 12b. Is configured as a positioning means for defining.

In FIG. 6, the flat portion on the right side of the support arm 42 when viewed from the vertical steel plate D side (lower left side in FIG. 6) (not shown) is held by the bolts 12a and 12b in a state of being in contact with the vertical piece 41a of the support member 41. The guide roller 11 on the left side when viewed from the vertical steel plate D side (not shown) protrudes toward the vertical steel plate D side from the guide roller 11 on the right side. At this time, the traveling carriage A travels in the direction of the arrow a while following the vertical steel plate D (not shown) on the horizontal steel plate C with the guide roller 11.

In FIG. 7, the flat portion on the left side of the support arm 42 when viewed from the vertical steel plate D side (lower left side in FIG. 7) (not shown) is held by the bolts 12a and 12b in a state of being in contact with the vertical piece 41a of the support member 41. The guide roller 11 on the right side when viewed from the vertical steel plate D side (not shown) protrudes toward the vertical steel plate D side from the guide roller 11 on the left side. At this time, the traveling carriage A travels in the direction of the arrow b while following the vertical steel plate D (not shown) on the horizontal steel plate C with the guide roller 11. The other configurations are the same as those in the first embodiment, and the same effects can be obtained.

As an example of utilization of the present invention, a traveling trolley equipped with a welding torch or a cutting torch and traveling on the first steel plate while pressing a plurality of guide rollers onto a second steel plate that stands substantially vertically from the first steel plate Applicable.

A ... Traveling carriage B ... Welding torch C ... Horizontal steel plate (first steel plate)
D ... Vertical steel plate (second steel plate)
P ... Point on the extension line 25 of the axis of the welding torch B α ... Angle between the line 11a and the running reference line 1a 1 ... Casing (running bogie body)
1a ... Travel reference line 2 ... Wheels 3 ... Connector 4 ... Dial 5 ... Push button switch 6 ... Changeover switch 7 ... Stand 7a, 7b ... Handle 8 ... Torch holder 9 ... Handle 10 ... Changeover switch 11 ... Guide roller 11a ... Each guide roller Lines connecting 11 roller tops 12, 12a, 12b ... Bolts 13, 14 ... Contact sensors 15 ... Bush 16 ... Fasteners 17 ... Circumference (positioning) centered on point P on extension line 25 of the axis of welding torch B Extension of the circumference passing through the center of the holes 20e, 20e1 to 20e4)
20 ... Support arms 20a, 20b ... Long hole 20a1 ... One end wall surface of the long hole 20a 20a2 ... The other end wall surface of the long hole 20a 20b1 ... One end wall surface of the long hole 20b 20b2 ... 20d ... Fixed piece 20c1, 20d1 ... Screw hole 20e, 20e1-20e8 ... Positioning hole 20f ... Top surface 20g ... Bottom surface 24a, 24b ... Shaft 25 ... Extension of welding torch B axis 26 ... Extension of welding torch B axis Circumference centered on point P on line 25 (extension of the circumference passing through the centers of the elongated holes 20a and 20b)
27 ... Lower receiving part 28 ... Spacer 29 ... Gap 30 ... Upper receiving part 30a, 30b ... Ball plunger 31 ... Support bracket 31a ... Horizontal piece 31b ... Standing piece 31b1 ... Long hole 41 ... Support member 41a ... Vertical piece 42 ... Support arm 42a ... Long holes 42a1, 42a2 ... Wall surfaces at both ends of the long holes 42a in the longitudinal direction 42c, 42d ... Fixed pieces

Claims (3)

A traveling carriage equipped with a welding torch or a cutting torch and traveling on the first steel plate while pressing a plurality of guide rollers against a second steel plate that stands up substantially vertically from the first steel plate.
A support arm that is slidably attached to the traveling carriage, has guide rollers rotatably provided at the front and rear tip portions in the traveling direction, and is formed in a polygonal or curved shape in a substantially C shape.
A member having an elongated hole that defines the direction of slide movement of the support arm, and
A shaft portion whose position relative to the slot varies along the inside of the slot, and
A traveling trolley characterized by having. The traveling carriage according to claim 1, further comprising a positioning means for defining a fixed position for sliding movement of the support arm. When the member having the elongated hole is integrally provided on the support arm, the shaft portion is provided on the traveling carriage main body, and the member having the elongated hole is provided on the traveling carriage main body. In this case, the traveling trolley according to claim 1 or 2, wherein the shaft portion is provided on the support arm.

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