JPH0228414A - Reversing device for steel structure member - Google Patents

Abstract

PURPOSE:To make it possible to reverse with ease, within a short period of time, and within a small space using the title device in a work such as welding by employing a pair of arms mounted on a moving cart and capable of rotating in both vertical and horizontal directions opposite to each other with a common shaft and using the arms to hold an object by making their angle acute and to move the object by making their angle obtuse. CONSTITUTION:Setting a first arm 6 at a position on a horizontal line 8 and a second arm 7 at a position on a vertical line 9 on a shaft 5, a steel structure member 2 from a fixed table is held for loading between the first and second arms 6 and 7. While maintaining this holding condition, the first and second arms 6 and 7 are rotated by 90 deg.. At this time, both of the arms 6 and 7 are fixed with the second arm 7 being positioned slightly above the horizontal line 8. The first arm 6 is then turned to a position on the horizontal line 8, the second arm 7 is set on the horizontal line 8 and the member 2 is moved with a roller (not shown) on the arm 6. Reversal of the member 2 is easily performed by combining this operation.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for reversing steel structural members, which is used when welding steel structural members in a factory or the like.

(Prior Art) As this type of reversing device, the following is generally known.

(2) As shown in FIGS. 11 and 12, two arms 21 are used to hold and invert a steel structure member 22.

■ As shown in Figure I3, the chain 23 is wound around the steel structure member 22, and by winding up the chain 23
Something that reverses 2.

[Problems to be solved by this invention]

However, since the one shown in FIG. 11 in (3) has orthogonal arms, it is not possible to rotate the steel structural member 22 by 180 degrees as shown (the A plane shown by the broken line has only been rotated by 90 degrees). In addition, as shown in FIG. 12 (after rotating the steel structure member 22 by 90 degrees,
It is necessary to perform a complicated operation of releasing the clamping of the steel structure member 22 and placing it on the frame 25 or the like at one end, moving both arms 21, and clamping the steel structure member 22 again.

On the other hand, in the case of ■, two poles 24 and 24 are erected in the factory for reversing work, as shown in Figure 13, which obstructs the movement of work cranes, etc. within the factory. Also, transporting the reversing device itself becomes difficult because it interferes with surrounding factory facilities. The difficulty of this transportation work means that a large number of reversing devices are required to produce a large number of steel structural members 22.

In addition, when the steel structure member 22 is placed on this reversing device or when work such as welding is completed, the steel structure member must be moved using a crane or roller conveyor. It is necessary to widen the interval and loosen the chain 23.

Furthermore, because of the chain drive, chain links pass through the corners of the steel structure members, but since there are many chain links, the steel structure members 22
It will hurt.

This invention was devised in view of the above-mentioned circumstances, and its purpose is to enable the reversal work of steel structural members to be performed continuously and easily in a short time, and to reduce the space required in the factory during the reversal work. An object of the present invention is to provide a device for reversing a steel structural member, which can be easily moved within a factory without interfering with peripheral equipment.

[Means for Solving the Problems] According to the present invention, a reversing device for a steel structural member is provided by a movable trolley that is movable below a fixed pedestal for placing the steel structural member, and a shaft mounted on the movable trolley. and a first arm and a second arm, each end of which is pivotally connected to the arm.

The first and second arms move the shaft in opposite directions from positions on a horizontal line extending in the moving direction of the movable trolley to positions in the movable trolley that are below the horizontal line and to positions on a vertical line above the shaft. It is provided so that it can rotate freely around the center.

Further, when the angle formed by the first and second arms is an acute angle, the steel structure member can be held, and when the angle formed by the first and second arms is an obtuse angle, the iron structure member can be held between the first and second arms. The structure shall be such that the members can be moved.

By positioning the first and second arms in the movable trolley below the horizon, smooth movement can be achieved without interfering with surrounding facilities.

Also, when the angle formed by the first and second arms is acute, the steel structure member can be held, and when the angle formed between the first and second arms is obtuse, the steel structure member can move on the first and second arms. This function allows the reversing of steel structural members to be carried out continuously and easily in a short time, and the space required in the factory during the reversing work can be reduced.

〔Example〕

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The apparatus for reversing steel structural members of the present invention will be described below with reference to illustrated embodiments.

The reversing device 1 (see Fig. 1) for the steel structural member 2
A movable trolley 4 that can move freely below the fixed mounting frame 3
and a first arm 6.7 and a second arm 6.7, each end of which is pivotally connected to a shaft 5 mounted on the movable trolley 4. Note that the first and second arms 6.7 are symmetrically provided at both ends of the movable trolley 4, as shown in FIG.

The first and second arms 6.7 are moved in opposite directions from a position above a horizontal line 8 extending in the direction of movement of the movable trolley 4 to an internal position of the movable trolley 4 below this horizontal line 8 and an axis 5.
It is rotatably provided around a shaft 5 to a position above a vertical line 9.

In addition, when the angle formed by the first and second arms 6.7 is an acute angle, the steel structural member 2 can be held between them, and when the angle formed between the first and second arms 6.7 is an obtuse angle, the first and second arms 6.7 so that the steel structural member 2 can move on it.

The first and second arms 6.7 are provided with a roller chain 10 wound around them (see FIG. 2), and one end is attached to a shaft 5 attached to the center of the moving cart 4. It consists of an arm base 11, which is attached to the moving carriage 4, and a protrusion 13, to which a rod 12a of a rotary drive cylinder 12, which is attached to the end of the moving carriage 4 in the moving direction, is attached.

Here, two rotational drive cylinders 12 are provided and are pivotally attached to both ends of the moving carriage 4 in the moving direction, and are configured to rotate the first and second arms 6.7 separately. There is. Further, the first and second arms 6.7 are provided so that their upper end surfaces are slightly above the upper end surface of the mounting fixed pedestal 3 when they are positioned above the horizontal line 8.

In order to reverse the steel structure member 2 using the reversing device 1 having such a configuration, first, as shown in FIG. It should be positioned below the steel structural member 2. At this time, the first and second arms 6.degree. 7 are at positions inside the movable trolley 4 below the horizontal line 8.

The iron bridge member 2 here is placed on a plurality of fixed frames 3 provided at predetermined intervals as shown in FIGS. 3 and 5. The movable trolley 4 is provided below each of the fixed frames 3 so as to move at the central position of the steel structure member 2.

Next, as shown in FIG. 6, the first arm 6 is rotated to a position above the horizontal line 8, and the second arm 7 is rotated to a position above the vertical line 9 above the shaft 5. In this state, the steel structure member 2 is separated from the mounting fixed frame 3, and the first and second arms 6
．． 7. This clamping operation of the first and second arms 6.7 is performed simultaneously on the first and second arms 6.7 at both ends of the moving carriage 4.

Next, the steel structure member 2 by this first and second arms 6.7
As shown in Fig. 7, the first and second arms 6.7 are simultaneously rotated to invert the steel structure member 2 by 90'' while maintaining the clamping state.At this time, the second arm 7 is aligned with the horizontal line The rotation is stopped at a position slightly above 8, and the first and second arms 6.7 are fixed.

Next, after the steel structure member 2 is reversed by 90', the first arm 6 is rotated to a position above the horizontal line 8, as shown in the eighth time. At this time, the second arm 7 is positioned slightly above the horizontal line 8, and the first
The steel structure member 2 on the second arm 7 moves onto the first arm 6 due to the inclination toward the arm 6 and the action of the roller chain 10 wound around the periphery.

Next, the steel structure member 2 is flipped over by 90″ and is now on the first arm 6.
9), and is held between the first and second arms 6.7 (see FIG. 9) and performs the above-mentioned 90'' reversal operation.

When the steel structure member 2 is again on the first arm 6, the first and second arms 6.7 are rotated to a position inside the movable trolley 4 below the horizontal line 8.

As a result, the steel structure member 2 on the mounting fixed frame 3 is
It is reversed by 0° and returned to the mounting fixed pedestal 3 again, and the reversal operation is completed.

In this way, by rotating the first and second arms 6.7, the work of reversing the steel structure member 2 by 180 degrees can be done efficiently ( I can do it.

The movable cart 4 may be moved by a self-propelled method or by a rope-towing method.

In addition, the work of reversing the steel structural member 2 is performed by the first and second arms 6.
．． 7 can be rotated in exactly the same way, so the fixed mounting frame 3
The second arm 7 can also be positioned below the upper steel structural member 2.

[Effects of the Invention] The device for reversing steel structural members of the present invention includes a movable trolley that is movable below a fixed pedestal for placing the steel structural members, and a shaft mounted on the movable trolley with each end attached to the shaft. It includes first and second arms that are pivoted.

The first and second arms move the shaft in opposite directions from positions on a horizontal line extending in the direction of movement of the movable trolley to positions within the movable trolley that are below the horizontal line and to positions on the vertical line above the shaft. It is rotatable around the center.

Furthermore, when the angle formed by the first and second arms is an acute angle, the steel structure member can be held, and when the angle formed by the first and second arms is an obtuse angle, the iron structure member can be held between the first and second arms. It is characterized by a structure in which the members are movable.

According to this configuration, the first and second arms can be rotated to accommodate the lower position of the fixed frame for placing the steel structural member in the movable carriage. Therefore, you can move within the factory and within the surrounding factories.

This can be done easily without interfering with equipment. In addition, this also means that the reversing device does not interfere with the operation of cranes or the like that are equipment in the factory.

In addition, by only rotating the first and second arms, there is no need to move the movable cart at the fixed frame position for the IA image, and the work of reversing the steel structure member by 180° can be performed continuously. This can minimize the space used during the inversion operation.

In this way, according to the reversing device of the present invention, 180
It is possible to perform the reversal work easily and efficiently using the minimum amount of space in the factory and without interfering with peripheral equipment. This means that the reversal work of a large number of steel structural members can be performed efficiently in a short time with one reversing device.

Furthermore, since the reversing device does not interfere with peripheral equipment when moving, the reversing device can also be used as a transport device for steel structural members.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a reversing device for steel structural members according to the present invention;
Fig. 2 is an enlarged front view of the arm, Fig. 3 is a plan view showing the state in which the steel structural members are placed, Fig. 4 is a plan view showing the reversing device when moving below the steel structural members, and Fig. 5 is a plan view showing the state in which the steel structural members are placed. B-B in Figure 3
Linear views and FIGS. 6 to 11 are process diagrams showing the reversing work of steel structural members by the reversing device of the present invention, and FIGS. 11 to 13.
The figure is a schematic front view showing a conventional reversing device. ■...Reversing device, 2... Steel structure member, 3... Fixed frame for mounting, 4... Moving trolley, 5... Shaft, 6... First arm, 7... 2nd arm, 8...horizontal line, 9.
...Plumb line, 10...Roller chain, 11...Arm base, 12...Rotation drive cylinder 12a.
...Rod, 13...Protrusion 13.21...Arm, 22...Structure member, 23...Chain, 24...
・Pole, 25... mount. fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig.

Claims (1)

[Scope of Claims] A movable trolley that is movable below a fixed frame for placing a steel structure member, and first and second movable trolleys each having an end pivoted to a shaft attached to the movable trolley. The first and second arms each move from a position on a horizontal line extending in the direction of movement of the movable trolley in opposite directions to a position within the movable trolley below the horizontal line and vertically above the shaft. It is provided so as to be rotatable about the axis to a linear position, and can hold the steel structure member when the angle formed by the first and second arms is an acute angle, and the angle formed by the first and second arms is A reversing device for a steel structure member, characterized in that the steel structure member is configured to be able to move on the first and second arms when the angle is an obtuse angle.