JPH0318051Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is for chamfering the flange end face of steel structures such as roll H, build-up H, I, etc.
This invention relates to an improvement in a device for forming a welding groove.

[Prior art and its problems] Conventionally, as a means of chamfering a welding groove on the flange end face of a steel structure such as a roll H or a build-up H or I, a frame is placed on the floor and a cover is placed on the frame. The workpiece was set and chamfering work was performed at a relatively low position. For this reason, workers are reluctant to
Or, from being forced into a sitting position,
There was a problem in that the level of fatigue was significant and work efficiency was also unfavorable.

The purpose of the present invention was to solve the problems of the prior art by simple and rational means, and to set the chamfering start position to the point where the operator can perform the most work while standing. The purpose of the present invention is to provide a device that can appropriately set the height to be easily chamfered and cause less fatigue, thereby improving work efficiency, and in addition, capable of automating chamfering work.

[Means for Solving the Problems] The configuration of the present invention that solves the problems of the prior art is such that steel structures (workpieces) such as rolls H and build-ups H and I are transported horizontally, and work is carried out in a vertical position. A conveyor is provided on the floor with a conveyance surface of a height suitable for the user, and the conveyor is suspended via a balancer wire from a support frame provided above the conveyor, and the workpiece is Running rails longer than the height of the flange are arranged symmetrically on the left and right sides of the conveyor, and a hook part that engages with the upper edge of the flange of the workpiece is provided on the inner surface of the upper part of the running rail. In addition, on the outer surface of the running rail, there is a chamfered tip at the end of the flange, a running electric motor, a flange end detector (limit switch LS ₁ ) for extinguishing the tip and stopping the running electric motor, and the initial position of the chamfer. This is a moving trolley equipped with a detector (limit switch LS ₂ ) that can be moved up and down.

[Embodiment] Next, details of an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of the present invention, FIG. 2 is a front view of the same, and FIG. 3 is a plan view of a workpiece in a chamfered state.

1 is a roll H, a build-up H, I whose chamfering start position is at a height suitable for a worker in a standing position, for example, 1100 to 1400 mm from the floor.
This is a conveying body consisting of a roller structure group that conveys steel structures (workpieces) such as steel structures (workpieces). 2 is the above-mentioned carrier 1
A pair of vertically long left and right running rails are arranged so as to sandwich the workpiece 5 and are suspended from the support frame 4 by the balancer wire 3. A hook portion 6 is provided on the upper end edge of the flange 5a to be mounted and supported from above, and a tightening bolt 7 is screwed onto the hook portion 6.
The running rail 2 is fixed to the flange 5a by the tightening bolt 7. Incidentally, it is natural that the running rail 2 is longer than the height of the flange 5a.

Furthermore, a rack rod 8 is provided at the center of the outer surface of both of the traveling rails 2 along approximately the entire length in the longitudinal direction of the traveling rail 2. A traveling trolley 9 configured to hold the outer surface is attached so as to be movable up and down. The traveling truck 9 is provided with an electric motor 10 for traveling, and a pinion (not shown) driven forward and backward by the electric motor 10 is connected to the rack rod 8.
The traveling carriage 9 is engaged with the traveling rail 2.
It is designed so that it can be raised and lowered according to the flow.

Further, below the traveling trolley 9, a crater 11,
Further, a limit switch _LS1 (flange end detector) is attached which is in constant contact with the outer surface of the flange 5a and whose contact point is turned off when it is separated from the outer surface of the flange 5a. Further, above the traveling carriage 9, there is provided a limit switch LS ₂ (initial position detector) whose contact point turns off when it comes into contact with a stopper 12 provided at the upper end of the outer surface of the traveling rail 2. . Note that illustrations of the supply gas pipe to the crater 11, electromagnetic valve, etc. are omitted.

[Description of operation] To explain the operation based on the above embodiment, as shown in FIG.
The hook part 6 of the running rail 2 is fitted to the upper edge of the flange 5a, and the running rail 2 is machined with the tightening bolt 7 so that the running rail 2 is parallel to the flange edge. After fixing it to the object 5, the worker adjusts the position and angle of the crater 11 without taking an unreasonable posture, and turns on the chamfering start switch (not shown). (not shown) automatically ignites. The preheating time of the chamfered portion is carried out by a timer or the like, and after a predetermined period of time, the traveling carriage 9 is gradually lowered by the driving of the traveling electric motor 10, and the chamfering progresses in the crater position as shown in FIG. As this chamfering work progresses, if the limit switch LS ₁ that is in contact with the side surface of the flange 5a comes off from the end surface of the flange 5a,
That is, when the chamfered end of the flange 5a is detected,
The limit switch LS ₁ is turned off, and the solenoid valve and igniter extinguish the fire pit 11.
The traveling electric motor 10 is reversely rotated to gradually raise the traveling carriage 9, and it is automatically returned to the chamfering starting direction. When the limit switch LS ₂ comes into contact with the stopper 12, the limit switch LS ₂ is turned off, the traveling carriage 9 is stopped at the old position, and one chamfering operation is completed.

The support pedestal 4 is of a gate type through which the carrier 1 passes, and the balancer wires 3 are movably attached to the upper horizontal sides of the gate type support pedestal, so that the chamfering device can move the workpiece. It is desirable to be able to adjust the width to suit the size of the width.

[Effects of the Invention] As described above, according to the configuration of the present invention, the following effects can be obtained.

(a) The operator sets the running rail on the flange, and the chamfering start position is lower than the floor.
The height is 1,100 to 1,400 mm, and the working position is almost standing, so worker fatigue is extremely low.

(b) Chamfer cutting is automatically performed simply by operating the start switch, allowing the operator to engage in other work in the meantime, and when chamfering is completed, the chamfering device returns to its initial height. In addition, since the chamfering device is suspended by a balancer wire, the work of removing the device from the workpiece can be done in a comfortable posture.

(c) Since the chamfering device is suspended with the balancer wire, the running rail can be easily adapted to the flange height, making it easy to handle.
Work efficiency can be improved.

[Brief explanation of drawings]

Figure 1 is a perspective view of the device, Figure 2 is a front view of the same as above,
FIG. 3 is a plan view showing the cutting state of the workpiece. DESCRIPTION OF SYMBOLS 1... Transport body, 2... Traveling rail, 3... Balancer wire, 4... Support frame, 5... Workpiece, 5a... Flange, 6... Hook portion, 7... Tightening bolt, 8... Rack rod, 9... Traveling trolley, 10
...Electric motor for traveling, 11...Tinder, 12...Stopper, LS ₁ ...Limit switch (flange end detector), LS ₂ ...Limit switch (initial position detector).

Claims (1)

[Scope of Claim for Utility Model Registration] A conveyor that horizontally conveys steel structures (workpieces) such as rolls H and build-ups H and I, and has a conveyance surface of a height suitable for workers in a standing position. provided on the floor and suspended via a balancer wire from a support pedestal provided above the carrier, and
Running rails longer than the height of the flange of the workpiece are arranged symmetrically on the left and right sides of the conveyor, and are engaged with the upper edge of the flange of the workpiece on the inner surface of the upper part of the running rail. In addition, on the outer surface of the running rail, a chamfered tip at the end of the flange, a running electric motor, a flange end detector (limit switch LS ₁ ) for extinguishing the said crater and stopping the running electric motor, and A chamfering device for a steel structure, characterized in that a traveling cart equipped with a chamfering initial position detector (limit switch LS ₂ ) is provided so as to be movable up and down.