JP6021168B2 - Traveling cart - Google Patents

Description

  The present invention relates to a traveling carriage configured to be able to travel while being guided by a second plate by pressing a guide roller against a second plate standing substantially vertically from the first plate. is there.

  In the process of relatively moving the workpiece made of steel plate or stainless steel plate and the torch such as plasma welding torch, carbon dioxide gas welding torch, plasma cutting torch or gas cutting torch, welding or cutting is performed by operating the torch. Processing is in progress. 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 running the traveling carriage along a preset welding line or cutting line.

  When traveling a traveling carriage along a target welding line or cutting line, using a rail arranged along the intended welding line or cutting line, and traveling by placing wheels of the traveling carriage on this rail, There is a system in which a guide plate standing along a target welding line or cutting line is used, and a guide roller of a traveling carriage is pressed against the guide plate to travel. In particular, in the method using guide rollers, support arms having guide rollers attached to the front and rear ends of the traveling carriage are arranged so as to protrude substantially horizontally, and the protruding dimensions of each support arm are adjusted to adjust each guide roller. A line connecting the roller tops is crossed on the downstream side with respect to the extension line of the wheel of the traveling carriage (see, for example, Patent Document 1).

  In the traveling carriage configured as described above, when the guide rollers provided at the front and rear are brought into contact with the upright guide plate, the extension lines of the wheels cross the guide plate. For this reason, when the traveling carriage is run in this state, each guide roller is pressed against the guide plate and rotated by a part of the force accompanying the running of the running carriage. As a result, the running carriage is moved in the direction along the guide plate. Run.

Japanese Patent No. 3400200

  In the case of a traveling carriage that travels with reference to a guide plate standing along a target welding line or cutting line, it is necessary to always keep the guide roller in pressure contact with the guide plate. It is essential that the line connecting the tops crosses the extension line of the wheels of the traveling carriage on the downstream side in the traveling direction. For example, when the protruding dimension of the support arm provided on the front side of the traveling carriage is made smaller than the protruding dimension of the supporting arm provided on the rear side, the traveling direction of the traveling carriage is defined only in the forward direction, for example. For this reason, for example, when traveling in the reverse direction, it is necessary to reset the protruding dimensions of the support arms from the traveling carriage.

  When adjusting the exit dimension of the support arm from the traveling carriage, the plurality of bolts fixing the support arm to the traveling carriage are loosened, and then the support arm is moved into and out of the traveling carriage to set the desired dimension. Thereafter, the loosened bolt is refastened. Since there are two support arms, there is a problem that this adjustment work is complicated and not easy. In particular, when the crossing angle between the line connecting the roller tops of each guide roller and the extension line of the wheel changes, the pressure contact force of the guide roller with respect to the guide plate changes. For this reason, it is not preferable to greatly change the crossing angle. In this case, the adjustment work of the support arm may become more complicated.

  An object of the present invention is to provide a traveling carriage that can easily change the protruding dimensions of each guide roller pressed against the guide plate without adjusting the protruding dimensions of the support arm from the traveling carriage.

In order to solve the above-described problems, a traveling vehicle according to the present invention is a traveling vehicle that travels on a first plate while pressing a plurality of guide rollers against a second plate that stands substantially vertically from the first plate. And a plurality of support arms provided at the front and rear of the running direction and having guide rollers disposed at the front ends thereof. The guide rollers disposed at the front ends of at least one support arm are rotatably attached to a rotation shaft provided in the mounting bracket. The mounting bracket is disposed at the tip of the support arm and is rotatably mounted on a rotation shaft provided substantially parallel to the rotation shaft of the guide roller, and a fixing pin and an installation provided on the support arm or the mounting bracket. It is configured to be unrotatable through a hole for fitting the fixing pin provided on the bracket or the support arm.

In the traveling carriage, a support bracket is disposed at a tip of the support arm, a mounting bracket is rotatably supported on the support bracket via a rotation shaft, and is separated from the center of the rotation shaft by a predetermined distance. A plurality of holes for fitting a fixing pin or a fixing pin provided on the mounting bracket are provided at the position, and the mounting bracket is provided at a position separated from the center of the rotating shaft by a predetermined distance. A plurality of holes or fixing pins for fitting the fixing pins are provided, and the fixing pins provided on the support bracket or the mounting bracket are fitted into holes selected from the plurality of holes provided on the mounting bracket or the support bracket. It is preferable that the mounting bracket be made unrotatable, and the mounting bracket is made rotatable by releasing the fitting of the fixing pin to the hole.

  In any one of the traveling carts described above, it is preferable that a welding torch or a cutting torch is mounted between support arms provided before and after the traveling direction.

  In the traveling carriage according to the present invention, the guide rollers provided at the front and rear are rotatably attached to the mounting bracket, and at least one of the mounting brackets is rotated at the tip of the support arm via the rotating shaft to guide. The position of the roller relative to the arm can be adjusted and fixed using a fixing pin. Then, by fixing the mounting bracket to the support arm, the protruding dimension of the guide roller from the tip of the arm, that is, the protruding dimension of the guide roller from the traveling carriage can be set. Therefore, it is not necessary to adjust the projecting dimension of the support arm itself from the traveling carriage, and the projecting dimension of the guide roller from the traveling carriage can be set by a simple operation of rotating and fixing the mounting bracket.

  In particular, a support bracket is disposed at the tip of the arm and the mounting bracket is rotatably supported by the support bracket via a rotation shaft, and the support bracket or the mounting bracket is separated from the center of the rotation shaft by a predetermined distance. Are provided with a fixing pin or a plurality of holes for fitting the fixing pin. Therefore, by rotating the mounting bracket to which the guide roller is attached to select the distance of the guide roller from the traveling carriage and inserting the fixing pin into the corresponding hole and fixing it, the guide roller can be easily removed from the carriage. Can be set.

  Moreover, since the welding torch or the cutting torch is mounted between the support arms provided before and after the traveling carriage, the traveling carriage can be configured as a welding apparatus or a cutting apparatus.

It is a three-view figure explaining the whole structure of the traveling vehicle which concerns on 1st Example. It is a figure explaining the structure of a support arm and a guide roller. It is a figure explaining the structure of the traveling vehicle which concerns on 2nd Example.

  Hereinafter, a first embodiment of a traveling carriage according to the present invention will be described with reference to the drawings. The traveling carriage A according to the present embodiment is equipped with a welding torch B, and has a crossing portion between a horizontal plate C serving as a first plate and a vertical plate D serving as a second plate standing upright from the horizontal plate C. It is comprised as a welding apparatus which welds fillet.

  Support arms E are respectively arranged in the front and rear of the traveling carriage A in the traveling direction. As shown in FIG. 1, a line 11a (surface of the standing plate D) connecting the roller tops of the respective guide rollers 11 constituting the support arm E. ) And a planned travel line (hereinafter referred to as “travel reference line”) 1a when the travel carriage A is traveled in a free state without the guide roller 11 being pressed against the upright plate D, crosses on the downstream side in the travel direction. ing. The angle α formed between the line 11a and the travel reference line 1a is not limited, and the pressure contact force of the guide roller 11 with respect to the standing plate D generated when the travel carriage A travels or the angle of the welding torch B with respect to the weld line (advancement) It is preferable to set appropriately according to conditions such as an angle or a receding angle.

  In the present embodiment, the angle α formed by the line 11a and the travel reference line 1a is set to 4 degrees, and the welding torch B is disposed orthogonal to the travel reference line 1a of the travel carriage A. Therefore, the welding torch B is set to a receding angle of 4 degrees.

  The standing plate D as the second plate is disposed at a position parallel to the target welding line or cutting line, and can guide the guide roller in order to guide the traveling direction of the traveling carriage A. Well, it does not ask what means it stands up to the horizontal plate C and is fixed by any means. For example, when the target work is to butt weld two plates or to cut one plate, this plate has a function as a horizontal plate C. The standing plate D can be formed by standing in parallel and fixing by spot welding or fixing by a magnet.

  As in this embodiment, when the target processing is fillet welding in which two plates are arranged substantially vertically and the crossing portion is welded, the plate arranged in the lateral direction is referred to as a horizontal plate C, A plate standing upright from the horizontal plate C is made to function as the standing 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 below the casing 1. On the upper surface of the casing 1, there are arranged operation devices such as a connector 3 for connecting a power source, a dial 4 for setting a speed, and a push button switch 5. In addition, contact sensors 6 are disposed on the front and rear end surfaces of the casing 1, respectively, so that a signal can be generated to stop the traveling carriage A when the traveling carriage A reaches a dog or the like provided at the traveling limit. It is configured as follows.

  A stand 7 is provided on the upper portion of the casing 1, and a torch holder 8 that holds the welding torch B is attached to the stand 7. The torch holder 8 is configured to be able to adjust the position in the vertical direction and the position in the direction of separating or approaching the upright plate D (in / out direction) by the knobs 7 a and 7 b provided on the stand 7. Therefore, by operating the knobs 7 a and 7 b 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 entering and exiting from the side surface of the casing 1 and set to a desired position. is there.

  In the present embodiment, the stand 7 has the welding torch B disposed on the left side (the left side of the casing 1) toward the downstream side in the traveling direction of the traveling carriage A (in this embodiment, the direction of arrow a, also referred to as the forward direction hereinafter). Is configured to do. Reference numeral 9 denotes a handle which is used when an operator moves the traveling carriage A.

  Support arms E are arranged in front and rear of the casing 1 in the traveling direction. The support arm E includes an arm 10 having one end 10 a fixed to the casing 1, and a guide roller 11 disposed on the other end 10 b side of the arm 10.

  The arm 10 is formed in a substantially L-shape, and one end portion 10 a is fixed to the casing 1 by a bolt 12, so that the other end portion 10 b protrudes substantially horizontally on the left side of the casing 1. When the end portion 10 a of the arm 10 is fixed to the casing 1, the line connecting the end portions 10 b is configured to be parallel to the traveling reference line 1 a of the traveling carriage A. A support bracket 13 is disposed at the end 10 b of the arm 10.

  The support bracket 13 is disposed toward the casing 1 so as to face each other with respect to the arm 10. With such an arrangement of the support bracket 13 with respect to the arm 10, the support arms E provided before and after the traveling carriage A are configured differently from each other. Therefore, the configuration of the support arm E on one side (arrow a side in FIG. 1) will be described, and the description on the other support arm E (arrow b side in FIG. 1) will be omitted.

  A mounting bracket 15 is attached to the support bracket 13 via a rotating shaft 14, and a guide roller 11 is rotatably attached to a rotating shaft 16 provided on the mounting bracket 15. Holes 13a and 13b are formed in the support bracket 13 on a circumference having a predetermined dimension with the rotation shaft 14 as a center.

  The mounting bracket 15 is rotatably supported by the support bracket 13 via the rotation shaft 14, and has a dimension set in advance from the center of the rotation shaft 4 (from the rotation shaft 14 to the hole 13 a in the support bracket 13. , 13b) A fixed pin 17 is arranged at a position separated from each other. The mounting bracket 15 is formed with a thick portion 15a having a thickness and a thin portion 15b thinner than the thick portion 15a. A rotating shaft 14 is disposed on the thick portion 15a and a fixing pin 17 is provided. Arranged is a rotating shaft 16 having a guide roller 11 attached to the thin portion 15b.

  The fixing pin 17 is fitted into holes 13a and 13b formed in the support bracket 13 so that the mounting bracket 15 cannot be rotated. The fixing pin 17 is formed with a protrusion 17a that fits into the holes 13a and 13b of the support bracket 13, a flange 17b, a boss 17c, and a lever 17d. The fixing pin 17 is accommodated in a recess 15c formed in the thick portion 15a of the mounting bracket 15, and is always biased in a direction in which the protrusion 17a protrudes by a spring 18 accommodated in the recess 15c. A groove (not shown) for receiving the lever 17d is formed on the side surface of the recess 15c.

  When the mounting bracket 15 is rotated with respect to the support bracket 13 and the projection 17a of the fixing pin 17 faces the hole 13a or 13b, it is urged by the spring 18 to fit into the facing hole 13a or 13b. As a result, the mounting bracket 15 cannot rotate with respect to the support bracket 13. Further, the mounting bracket 15 moves relative to the support bracket 13 by moving the lever 17d along a groove (not shown) formed on the side surface of the recess 15c against the bias of the spring 18 and pulling the projection 17a into the recess 15c. It can be turned.

  Therefore, depending on which of the holes 13a and 13b formed in the support bracket 13 the fixing pin 17 of the mounting bracket 15 is fitted, the projected dimension of the guide roller 11 from the support bracket 13 (the guide roller 11 from the casing 1). Will change). That is, it is possible to adjust the entrance and exit of the guide roller 11 from the casing 1 by performing the operation of the fixing pin 17 and the operation of rotating the mounting bracket 15 with respect to the support bracket 13. It is possible to reliably set the entrance / exit dimensions.

  In the above configuration, the distance from the center of the rotation shaft 14 to the holes 13a and 13b and the distance between the holes 13a and 13b in the support bracket 13 and the rotation shaft 14 to the rotation shaft 16 in the mounting bracket 15 are as follows. The distance, direction, and the like are set in accordance with conditions such as the angle α formed by the preset line 11a and the travel reference line 1a shown in FIG. 1, the distance between the guide rollers 11, the number of support arms E, and the like. Has been.

  In the present embodiment, the support arms E are respectively arranged before and after the traveling direction of the traveling carriage A, and as described above, the angle α formed by the line 11a and the traveling reference line 1a is set to 4 degrees. For this reason, for example, the hole 13a is selected in the support arm E on the arrow a side, the hole 13b is selected on the support arm E on the arrow b side, and the fixing pin 17 is fitted to each other so that the rotation is impossible. In this state, by bringing each guide roller 11 into contact with the standing plate D, the traveling reference line 1a of the traveling carriage A crosses the standing plate D at 4 degrees in the direction of the arrow a. When the hole 13b is selected in the support arm E on the arrow a side and the hole 13a is selected in the support arm E on the arrow b side, each guide roller 11 is brought into contact with the standing plate D in this state. The traveling reference line 1a of the traveling carriage A crosses the upright plate D at 4 degrees in the direction of the arrow b.

  That is, the distance between the holes 13a and 13b formed in the support bracket 13 of the support arm E has such a dimension that the difference in the angle at which the traveling reference line 1a of the traveling carriage A intersects the line 11a is 4 degrees. ing.

  As described above, in the traveling carriage A according to the present embodiment, the traveling carriage A travels in the direction of the arrow a and is welded to the target welding line, and then travels in the direction of the arrow b to the new welding line. When welding, it is possible to easily adjust the protruding dimension of each guide roller 11 from the casing 1 with a simple operation.

  Next, the configuration of the traveling carriage A according to the second embodiment will be described with reference to FIG. In the present embodiment, the support arm F disposed on the traveling carriage A according to the above-described embodiment is disposed on the arrow a side of the traveling carriage A, and the conventional support arm 20 is disposed on the arrow b side.

  The support arm 20 includes an arm 21 having one end 21a fixed to the casing 1 and a guide roller 11 rotatably attached to the other end 21b of the arm 21. The guide roller 11 is rotatably attached to a rotating shaft 23 disposed on a bracket 22 attached to an end 21 b of the arm 21. For this reason, when the end 21a of the arm 21 is fixed to the casing 1 with a bolt, the protruding dimension of the guide roller 11 from the casing 1 is uniquely set.

  In this embodiment, the basic structure of the support arm F is the same as that of the support arm E, but the distance between the holes 13a and 13b provided in the support bracket 13 is larger than the distance in the support arm E. Is formed. That is, the distance between the holes 13a and 13b is set such that the difference in the angle at which the traveling reference line 1a intersects the line 11a is 8 degrees.

  Accordingly, in the first embodiment described above, it is necessary to adjust the rotational position of the support bracket E of the support arm E provided on the front and rear of the traveling carriage A with respect to the support bracket 13, whereas the second embodiment. In the embodiment, the rotation position of the support arm F with respect to the support bracket 13 of the mounting bracket 15 may be adjusted. That is, the protruding dimension of the guide roller 11 can be set more easily.

  In the first and second embodiments, the case where the traveling cart A is configured as a welding device in which the welding torch B is mounted is described. However, the mounted torch is not limited to the welding torch but includes a gas cutting torch. It is also possible to configure as a cutting device by mounting a torch.

  The traveling carriage A according to the present invention is advantageously used as a welding device or a cutting device.

A Traveling carriage B Welding torch C Horizontal plate D Standing plate E, F Support arm 1 Casing 1a Traveling reference line 2 Wheel 3 Connector 4 Dial 5 Push button switch 6 Contact sensor 7 Stand 7a, 7b Knob 8 Torch holder 9 Handle 10 Arm 10a 10b end portion 11 guide roller 11a line, line connecting guide roller top 12 bolt 13 support bracket 13a, 13b hole 14 rotating shaft 15 mounting bracket 15a thick portion 15b thin portion 15c recessed portion 16 rotating shaft 17 fixed pin 17a Projection 17b Flange 17c Boss 17d Lever 18 Spring 20 Support arm 21 Arm 21a, 21b End 22 Bracket 23 Rotating shaft

Claims (3)

A traveling carriage that travels on a first plate while pressing a plurality of guide rollers against a second plate standing substantially vertically from the first plate,
It has a plurality of support arms that are provided at the front and back in the running direction and that have guide rollers arranged at the tip,
The guide roller disposed at the tip of at least one support arm is rotatably attached to a rotation shaft provided on the mounting bracket, and the mounting bracket is disposed at the tip of the support arm and substantially parallel to the rotation shaft of the guide roller. It is rotatably attached to the provided rotation shaft and is configured to be non-rotatable through a fixing pin provided on the support arm or the mounting bracket and a hole for fitting the fixing pin provided on the mounting bracket or the support arm. A traveling cart characterized by that. A support bracket is disposed at the tip of the support arm, and the mounting bracket is rotatably supported by the support bracket via a rotation shaft, and a fixed pin or an attachment is provided at a position separated from the center of the rotation shaft by a predetermined distance. There are multiple holes to fit the fixing pins provided on the bracket,
The mounting bracket is provided with a plurality of holes or fixing pins for fitting the fixing pins provided on the support bracket at positions separated from the center of the rotation shaft by a predetermined distance,
The fixing pin provided in the support bracket or the mounting bracket is fitted into a hole selected from a plurality of holes provided in the mounting bracket or the support bracket so that the mounting bracket cannot be rotated, and the fixing pin is fitted into the hole. The traveling carriage according to claim 1, wherein the traveling bracket is configured such that the mounting bracket can be rotated by releasing   The traveling cart according to claim 1 or 2, wherein a welding torch or a cutting torch is mounted between support arms provided in front and rear in the traveling direction.

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