JP5632641B2 - Welding equipment - Google Patents

Description

  The present invention relates to a welding apparatus that is advantageous for use in longitudinal welding of a crossing portion of two steel plates standing substantially vertically.

  When constructing a large structure by welding, the abutting part of two steel plates standing up and arranged in the same plane, or the crossing part of two steel plates standing up and intersecting at a substantially right angle from the bottom to the top Welding in the longitudinal direction is performed. This longitudinal welding is also called upward welding and is technically difficult. For this reason, longitudinal welding is performed by a skilled worker, and if the skilled worker is unable to perform the welding, the welding is performed several times and then the welding is completed by finishing the welding upward. Yes.

  On the other hand, when the portion to be welded is a crossing portion of a steel plate arranged horizontally and a steel plate standing upright with respect to the steel plate, it is described in Patent Document 1 in order to automate this welding operation. A traveling cart has been proposed. This traveling carriage is configured to be able to travel on a steel plate mounted with a welding torch and disposed horizontally, and to travel using the surface of the vertically standing steel plate as a guide.

Japanese Patent No. 3400200

  As described above, in order to perform downward fillet welding, a traveling carriage described in Patent Document 1 has been proposed. By mounting a welding torch on this traveling carriage, fillet welding can be automated. . However, this traveling carriage is not configured to be applicable to longitudinal welding, and when this traveling carriage is applied to longitudinal welding, it is necessary to make modifications to increase the magnet's attractive force. There is a risk that it will be expensive. Further, in the case of this traveling carriage, since the dimension in the traveling direction is large, there are portions that cannot be welded at the starting and end points of welding, and post-processing by manual welding is required.

  For this reason, in order to promote the rationalization of the longitudinal welding required when manufacturing a large steel structure, it is a fact that development of an apparatus capable of automatically longitudinal welding is required.

  The objective of this invention is providing the welding apparatus which can perform the fillet welding of the vertical direction in the cross | intersection part of two standing steel plates.

In order to solve the above-described problems, a welding apparatus according to the present invention is a welding apparatus that performs vertical welding by being attracted and fixed to one of two steel plates standing up from a bottom plate , and a magnet is provided on one surface. And a plate-like rail provided with a rack on the other surface, a cart that meshes a pinion that is configured to be rotatable with the rack and that can reciprocate along the plate-like rail, and is mounted on the cart. a welding torch, in the welding apparatus having a contact member which abuts on the plate-shaped rail in the longitudinal direction of the one located at the end recess to avoid the weld bead at the tip is formed Rutotomoni bottom plate, A hanger disposed on the other end side in the longitudinal direction of the plate-like rail and having a hook for hooking hoses and cables at the tip, and a plurality of holes are formed along the rack of the plate-like rail , And two dogs the selected mounted to define a travel limit of said carriage to and has a.

  In the welding apparatus according to the present invention, it is possible to perform fillet welding in the vertical direction at the intersecting portion of the two steel plates that stand and intersect. That is, a plate-like rail is fixed to one of the two steel plates in the vertical direction, and the mounted welding torch is operated while raising the carriage along the plate-like rail. The intersecting portion can be welded in the vertical direction and the fillet can be welded in the vertical direction while the carriage is lowered.

In particular, when the plate-like rail is attached to one steel plate, even if a weld bead exists in the lower end portion of the other steel plate by bringing the tip of the abutting member into contact with the surface of the other steel plate The weld bead can be avoided by the recess formed at the tip of the contact member .

  Also, by hooking the power cords connected to the carriage and the cables and hoses connected to the welding torch on the hanger, the weight of these cords, cables, and hoses can be a load on the carriage. In addition, stable traveling of the cart can be realized.

  In addition, a plurality of holes formed along the rack provided on the plate-like rail are selected corresponding to the upper end and the lower end of the intersecting portion to be welded, and dogs are respectively attached to the selected holes. Thus, the traveling range of the carriage can be defined. In other words, a sensor that detects the dog and generates a signal is provided on the carriage, and when the carriage rises and detects the dog corresponding to the upper end by the sensor, the carriage rises and the carriage lowers. When the dog corresponding to the lower end is detected, the descent of the carriage can be stopped.

  Therefore, it becomes possible for one worker to operate a plurality of welding apparatuses, and the fillet welding work in the vertical direction can be rationalized.

It is a perspective view explaining the whole structure of a welding apparatus. It is a front view of a welding apparatus. It is a top view of a welding apparatus. It is a side view of a welding apparatus, and is a figure explaining the state which has a trolley | bogie in a lower end part. It is a side view of a welding apparatus, and is a figure explaining the state which has a trolley | bogie in an upper end part.

  Hereinafter, preferred embodiments of the welding apparatus according to the present invention will be described with reference to FIGS. The welding apparatus A according to the present embodiment is, for example, when welding the fillet in the longitudinal direction at the intersection of the long material B and the vertical material C, which are arranged upright from the bottom material D and whose lower end portion is welded to the bottom material D. It is constructed so as to be advantageous for use.

  In particular, the welding apparatus A is configured to be fixed to the longitudinal member C in a state where the lower end portion is in contact with the bottom member D, and to be set to an optimum welding length according to the height of the longage member B. In addition, when welding the crossing part of the Longi material B and the vertical material C ascending from the lower end side to the upper end side, a stable welding speed is realized by eliminating an increase in load caused by dragging cables and hoses. It is configured to be able to.

  The welding apparatus A includes a plate-like rail 1 provided with a magnet 2 on one surface and a rack 3 provided on the other surface, and a pinion 4 configured to rotate and mesh with the rack 3. , A welding torch 6 mounted on the trolley 5, and a contact member 11 that is disposed at the lower end that is one end in the longitudinal direction of the plate-like rail and whose front end abuts the longi material B. And a hanger 12 disposed at the upper end which is the other end in the longitudinal direction of the plate-like rail 1 and a plurality of holes 1a formed along the rack 3 provided on the plate-like rail 1 are selectively mounted. The two dogs 13 and 14 are configured.

  The plate-like rail 1 is formed with a dimension sufficiently larger than the standing height of the long material B, and a pair of magnets 2 are provided on one surface (back surface). Then, the plate-like rail 1 is arranged in the vertical direction along the vertical member C, and the plate-like rail 1 is fixed to the vertical member C or detached by operating the operating lever 2a to turn on and off the magnet 2. It is configured to let you.

  On the other surface (front surface) of the plate-like rail 1, a rack 3 is provided along the longitudinal direction. The mounting position of the rack 3 on the plate-like rail 1 is provided on the carriage 5 when the carriage 5 is lowered and the welding torch 6 mounted on the carriage 5 is opposed to the lower end portion of the welded portion for the Longi material B. It is set so that the pinion 4 is in a position where it can be reliably engaged. Further, the length of the rack 3 is set so that a length necessary for welding the long material B to the vertical material C can be sufficiently secured. Accordingly, the length of the rack 3 in the welding apparatus A is set so as to satisfy the longest welding length among the target longages B.

  Both end portions in the width direction of the plate-like rail 1 are configured as guide portions for guiding the traveling of the carriage 5. For this reason, the plate-shaped rail 1 is formed in the trapezoid shape by which the slope was formed from both front and back toward the center part of the thickness direction. And it is possible to drive the trolley | bogie 5 along the plate-shaped rail 1 by making the roller 5b arrange | positioned at the trolley | bogie 5 fit in the part formed in the trapezoid shape.

  On one end side in the width direction of the plate-like rail 1 (on the left side of the rack 3 shown in FIG. 1 in this embodiment), a plurality of holes 1a are formed along the rack 3 at a constant interval. Yes. The hole 1a may be a bolt hole into which a bolt can be inserted, or may be a screw hole into which the bolt can be screwed. In this embodiment, the hole 1a is formed as a screw hole.

  Dogs 13 and 14 are mounted in the hole 1a formed as described above. The dogs 13, 14 are arranged at the travel limit along the plate-like rail 1 of the carriage 5, and define the travel range (lift range) of the carriage 5. The holes 1a are selected in correspondence with the lower end portion and the upper end portion, respectively.

  Each of the dogs 13 and 14 is formed in an L shape with long holes 13a and 14a having fixed pieces 13b and 14b and standing pieces 13c and 14c, respectively. The dog 13 is arranged at the lower end side of the plate-like rail 1 at the lower limit of the carriage 2 and fixed by the bolt 15, and the dog 14 is arranged at the upper end side of the plate-like rail 1 at the raising source of the carriage 5. And the raising / lowering range of the trolley | bogie 5 is set by fixing with the thumbscrew 16. FIG.

  The carriage 5 has a pinion 4 that is driven at a desired speed in a desired direction by a motor (not shown) provided inside the casing 5a. The casing 5a is provided with a plurality of rollers 5b so as to be freely rotatable at positions corresponding to the ends of the plate rail 1 in the width direction. The plurality of rollers 5b are fitted to both ends of the plate rail 1 in the width direction, the pinion 4 is engaged with the rack 3, and the pinion 4 is driven, so that the carriage 5 has a longitudinal length of the plate rail 1. It is configured to be able to reciprocate along the direction.

  A sensor 5c that generates a signal in contact with the dogs 13 and 14 at positions corresponding to the dogs 13 and 14 in the front-rear direction (vertical direction in FIG. 1) along the traveling direction of the carriage 5 respectively. 5d are arranged. Then, it is detected by the signal generated when the cart 5 is lifted and the sensor 5d comes into contact with the standing piece 14c of the dog 14, and the sensor 5c detects that the rising piece 13c of the dog 13 is reached. It is configured so that it can be detected that the carriage 5 has reached the lower limit by a signal generated when it comes into contact.

  A cover 5e is provided on the side of the carriage 5 where the welding torch 6 is disposed. The cover 5e prevents heat generated during welding from being transmitted to the carriage 5.

  A torch holder 7 is disposed at a position corresponding to the lower end portion of the carriage 5. The torch holder 7 has a function of holding the welding torch 6 and adjusting the position (distance from the welding site) and angle of the welding torch 6 with respect to the welding site where the long material B and the vertical material C intersect. is there.

  For this reason, the torch holder 7 includes a holder 7a for holding the welding torch 6, a bracket 7c for rotatably holding the shaft 7b of the holder 7a, and a handle 7d for moving the bracket 7c in the width direction of the plate rail 1. The bracket 7c and the handle 7d are configured to include a handle 7e for moving the bracket 7c and the handle 7d in a direction perpendicular to the width direction of the plate-like rail 1, and a bracket 7f for attaching the handle 7e to the casing 5a of the carriage 5.

  In the above configuration, the handles 7d and 7e have long screws (not shown) that are rotated by the outer handles 7d and 7e, respectively. The bracket 7c has a screw member (not shown) that is screwed with a long screw that is rotated by the handle 7d. Similarly, the handle 7d is a screw that is screwed with a long screw that is rotated by the handle 7e. It has a member. Therefore, by selectively rotating the handles 7d and 7e, the bracket 7c, the bracket 7c and the handle 7d can be moved. By this operation, the welding torch 6 can be separated from the longi material B. It is possible to make it approach and to separate or approach the longitudinal member C. Further, the angle of the welding torch 6 can be adjusted by rotating the holder 7a about the shaft 7b.

  The contact member 11 is disposed at one end of the plate-like rail 1, that is, at the lower end that comes into contact with the bottom material D when the plate-like rail 1 is fixed to the vertical member C. A recess 11a for avoiding the weld bead is provided. Further, the contact member 11 has such a length that the distance of the welding torch 6 from the longe material B can be set to a distance at the time of welding when the tip portion where the recess 11a is formed is brought into contact with the longi material B. Have

  The abutting member 11 is preferably configured so as to be in contact with the bottom material D and maintain a stable posture when welding the longi material B and the longitudinal material C. For this reason, the contact member 11 is formed by bending a flat plate at a right angle. The contact piece 11b contacts the bottom material D and contributes to the stabilization of the posture, and the lower end portion of the plate rail 1 is bolted by a bolt 11e. A fixing piece 11c to be fixed, and a recess 11a is formed on a piece on the extension of the fixing piece 11c.

  A hanger 12 having a hook 12 a formed on the other end side in the longitudinal direction of the plate rail 1, that is, on the upper end side of the plate rail 1 is disposed. The hanger 12 has a function of hooking unillustrated hoses including a power cord 17 connected to the carriage 5 and a communication line (not shown) for transmitting a control signal and a power cable 18 connected to the welding torch 6. It is.

  The hanger 12 is detachably attached to a stand 12b provided at the upper end portion of the plate rail 1. Then, the power cord 17 and the cable 18 are hooked and supported on the hook 12a of the hanger 12 to prevent the weight of the power cord 17 and the cable 18 from acting as a load on the carriage 5.

  For example, depending on the specifications of the welding torch 6, in addition to the power cable 18, several heavy hoses and cables such as a hose for supplying a gas containing carbon dioxide and a supply system for a welding core are connected. For this reason, when the hoses including these cables 18 are simply placed on the bottom material D, the load acting on the cart 5 increases as the cart 5 rises. Therefore, by hooking the power cord 17, the cable 18 and the hoses connected to the cart 5, the welding torch 6 on the hanger 12, it is possible to reduce the fluctuation of the load on the cart 5, and as a result, a stable traveling speed. (Elevating speed) can be realized.

  A control box 20 for controlling the operation of the welding apparatus A is provided at the upper end portion of the plate rail 1. The control box 20 is provided with a switch 20a for running-stopping the carriage 5, a dial 20b for adjusting the running speed of the carriage 5, and a switch 20c for designating the running direction of the carriage 5 when welding. And it is possible to drive the trolley | bogie 5 along the plate-shaped rail 1 in the direction set beforehand by operating each switch 20a-20c.

  For example, when the traveling direction (welding direction) of the carriage 5 when welding is performed by the switch 20c, the carriage 5 is positioned at the lower limit at the start of the welding operation, and the welding start is commanded by the switch 20a. 5 rises at the welding speed set by the dial 20b. When the cart 5 reaches the rising limit and the sensor 5d comes into contact with the standing piece 14c of the dog 14, the cart 5 descends at a speed larger than the speed at the time of welding work according to the signal generated from the sensor 5d. Start.

  When the cart 5 is lowered and the sensor 5c comes into contact with the standing piece 13c of the dog 13, the cart 5 is stopped according to the signal generated from the sensor 5c. At this time, the stop position of the carriage 5 is a lower limit corresponding to the dog 13 and is in an initial state before starting welding.

  The switch 20a can not only run / stop the carriage 5, but also control the operation of the welding torch 6. In this case, when the switch 20a is turned on, the welding torch 6 and a timer (not shown) are operated. First, welding work by the welding torch 6 is started, and then the traveling of the carriage 5 is started after a set time by the timer has elapsed. Configured to do.

  Next, a description will be given of a procedure for welding the intersection between the long material B and the vertical material C by the welding apparatus A configured as described above. It should be noted that the following procedure is an example of the operation and need not necessarily be performed in this order.

  First, the welding apparatus A is fixed to the longitudinal member C. In other words, the welding device A is transported to the operation portion of the long material B and the vertical material C, and the tip portion where the concave portion 11a of the contact member 11 fixed to the lower end portion of the plate rail 1 is formed is the long material B. Contact the surface. At this time, even when the lower end portion of the long material B is welded to the bottom material D and a weld bead (not shown) is present at the intersecting portion of both materials B and D, the contact member 11 Since the recessed part 11a is formed in the front-end | tip of this, it is possible to avoid a weld bead by this recessed part 11a.

  By bringing the contact piece 11b of the contact member 11 into contact with the surface of the bottom material D as described above, the plate-like rail 1 can be disposed substantially perpendicular to the bottom material D. Then, by holding this state and adsorbing the magnet 2 to the longitudinal member C, the welding device A can be fixed to the longitudinal member C in a state where the plate-like rail 1 is disposed substantially parallel to the longi member B. Is possible.

  After fixing the welding apparatus A to the longitudinal member C or prior to fixing, the power cord 17 connected to the carriage 5, the cable 18 connected to the welding torch 6, and hoses are hooked on the hook 12 a of the hanger 12. Keep it.

  Next, the lower limit of the cart 5 is set. In this case, the carriage 5 is lowered so that the tip of the welding torch 6 is opposed to the lower end portion of the site to be welded that is the intersection of the long material B and the vertical material C. The carriage 5 is held in this state, and the hole 1a of the plate rail 1 corresponding to the position where the standing piece 13c of the dog 13 can come into contact with the sensor 5c provided on the carriage 5 is selected, and the selected hole 1a is selected. The dog 13 is fixed.

  Next, the distance to the upper end portion of the welding target site, which is the intersection of the long material B and the vertical material C, is measured, and when the carriage 5 travels the measured distance, the standing piece 14c of the dog 14 with respect to the sensor 5d. The hole 1a corresponding to the position where the contact can be made is selected, and the dog 14 is fixed to the selected hole 1a. At this time, since the elongated hole 14a is formed in the dog 14, the position of the upright piece 14c can be adjusted within the range of the elongated hole 14a.

  As described above, the travel range of the carriage 5 on the plate rail 1a can be set.

  The switches 20b and 20c are operated to set the welding direction and the welding speed of the traveling carriage 5, and then the switch 20a is operated to start welding on the intersection between the long material B and the vertical material C by the welding torch 6. At the same time, the timer is operated, and after the set time of the timer has elapsed since the start of welding, the carriage 5 is started to travel in the welding direction while continuing welding by the welding torch 6.

  As the carriage 5 rises at a preset welding speed while continuing the welding with the welding torch 6, the longitudinal fillet welding on the intersection between the longi material B and the longitudinal material C is continued. When the sensor 5d of the carriage 5 comes into contact with the standing piece 14c of the dog 14, welding by the welding torch 6 is stopped according to the signal from the sensor 5d, and the carriage 5 is stopped at the same time. And it falls after predetermined time passes.

  When the cart 5 is lowered and the sensor 5c comes into contact with the standing piece 13c of the dog 13, the descent of the cart 5 is stopped according to the signal from the sensor 5c, and the welding apparatus A returns to the initial state. At this time, the fillet welding in the vertical direction with respect to the intersection between the longi material B and the vertical material C is completed.

  Therefore, the welding apparatus A can be detached from the longitudinal member C by releasing the adsorption of the magnet 2 to the longitudinal member C. And it is possible to transfer the welding apparatus A detached | separated from the vertical member C to the cross | intersection part of the longi material B and the vertical member C which should be welded next.

  The welding apparatus A of the present invention is advantageous when it is used to weld the longi material B to the hull member that becomes the longitudinal member C.

A welding device B longi material C vertical material D bottom material 1 plate rail 1a hole 2 magnet 2a operation lever 3 rack 4 pinion 5 carriage 5a casing 5b roller 5c, 5d sensor 5e cover 6 welding torch 7 torch holder 7a holder 7b shaft 7c , 7f Bracket 7d, 7e Handle 11 Contact member 11a Recess 11b Contact piece 11c Fixing piece 11e Bolt 12 Hanger 12a Hook 12b Stand 13, 14 Dog 13a, 14a Long hole 13b, 14b Fixing piece 13c, 14c Standing piece 15 Bolt 16 Thumbscrew 17 Power cord 18 Cable 20 Control box 20a, 20c Switch 20b Dial

Claims (1)

A welding device that performs vertical welding by being adsorbed and fixed to one of two steel plates standing up from a bottom plate, a plate-like rail provided with a magnet on one surface and a rack on the other surface; In a welding apparatus having a cart configured to mesh a pinion configured to be rotatable with the rack and capable of reciprocating along a plate rail, and a welding torch mounted on the cart,
And the abutment member abutting the longitudinal direction of the arranged one end recess to avoid the weld bead at the tip is formed Rutotomoni bottom plate of the plate-shaped rail,
A hanger formed on the other end side in the longitudinal direction of the plate-like rail and formed with a hook for hooking hoses and cables at the tip;
Two dogs that form a plurality of holes along the rack of the plate-shaped rail and select the holes and define the traveling limit of the carriage,
A welding apparatus comprising:

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