JPH05238672A - Balance type steel inverting machine - Google Patents

Abstract

PURPOSE:To lift steel by chains to invert it always stably even if the length of the steel changes. CONSTITUTION:Two sets of trolleys 7 are mounted to a travel beam 2 suspended and supported by ceiling cranes, and each trolley 7 is provided with a chain block 11 hangingly. Each trolley 7 can travel along the travel beam 2, but the trolley 7 is normally bolt-fixed to a trolley positioning plate extended in the longitudinal direction of the travel beam 2 according to the length of steel 1. When the length of the steel 1 changes, the positions of the trolleys 7 are changed to lift the steel 1 through chains 12, and the chain blocks 11 are operated to invert the steel 1 with good work performance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a balance type steel material reversing machine for reversing steel materials such as box pillars used as steel frames for construction.

[0002]

2. Description of the Related Art In recent years, steel plates for construction have been made thicker and have higher strength, and the work of melting and welding the materials has been increasing. In this type of steel frame, a box column is mainly formed by welding a long plate, which is obtained by fusing and cutting a thick plate, into a square box to be integrated.

That is, as shown in FIG. 7, the box pillar 6 has two long thick plates 7 and two long thick plates 7 each having a long square steel 11 as a backing metal attached to a corner portion and an end face obliquely melted. 8 is assembled by welding. Specifically, the long thick plate 8 is applied to the portion of the square steel 11 attached to the long thick plate 7 via the welded portion a, and the respective end portions are abutted to each other to form the groove 9.
It is integrated by performing CO ₂ gas shield arc welding or submerged arc welding.

When inspecting or grinding the welded portion of the box column thus manufactured by welding, it is necessary to invert the box column. Conventionally, in order to invert a box pillar, two reversing machines b suspended from the overhead crane a at a constant interval as shown in FIG. 4 and FIG.
After the box pillar 1 is hung over each of the chains c provided in each of the chains c, the box pillar is lifted by the crane a and the one end of the chain c is paid out from the two reversing machines b and the other end is paid in by the chain c. 1 has been inverted so that the portion to be inspected or ground, for example, is on the upper surface.

The chain c has a pin d as shown in FIG.
The chain c type is used, and when the chain c is hung on the box pillar 1, one pin d is detachably set, so remove it and hang it on the box pillar 1. The pin d is attached again to enable lifting.

[0006]

In the above prior art, it is necessary to perform a troublesome work such as removing and attaching one pin d from the chain c every time the box column 1 is hung over the chain c provided in the reversing machine b. And was inefficient. To hang the chain c on the box pillar 1 without removing the pin d from the chain c, use the two reversing machines b and chain c respectively.
After extending the chain c to both ends of the box pillar 1, the chain c may be hung over the box pillar 1 in a loop shape.

However, when the box pillar 1 is longer than the distance between the two reversing machines b, it is necessary to move the fully extended chain c to the end of the box pillar 1 and then hang it over. It is inefficient because it takes time to re-roll c. Furthermore, two reversing machines b
If the box column 1 is too long as compared with the interval, the suspension of the box column 1 by the chain c becomes unstable.

A chain c of the type connected by a pin d
Since the box column 1 is directly lifted by the method, there is a risk that the box column may be scratched when it is inverted. The present invention solves the above-mentioned problems of the prior art, does not require troublesome work such as attaching and detaching pins, and greatly extending the chain, and efficiently and safely corresponding to the length of steel materials such as box pillars. An object of the present invention is to provide a balance-type steel material reversing machine capable of lifting steel material for reversing work and preventing the box pillar from being scratched at the time of reversing.

[0009]

SUMMARY OF THE INVENTION To achieve the above object, the present invention provides two parallel traveling beams integrally suspended on an overhead crane and wheels for each traveling beam. 2 units mounted so that they can be moved together 2
A set of trolleys, a trolley positioning plate extending in the longitudinal direction of each of the traveling beams, a trolley fixing bracket provided on the upper part of each trolley, a chain block suspended on each trolley, and the two units as one unit. A chain that is looped around each pair of chain blocks and is attached so that it can be rolled in and unwound freely, a resin cover that covers the required parts of this chain, and the traveling beams. A balance-type steel material reversing machine comprising a fixing bolt for fastening a trolley fixing plate provided to each trolley at a required position of the provided trolley positioning plate.

[0010]

[Operation] Since the fixing metal fittings provided on each trolley are fastened with the fixing bolts at the required positions of the trolley positioning plate provided on the traveling beam according to the length of the steel material that is lifted and inverted by the balance type steel material reversing machine, It is possible to position a chain, which is built around a chain block including two units suspended on a trolley, near both ends of the steel material.

Therefore, it is possible to easily hang the loop-shaped chain around the end portion of the steel material in a state where the chain block is rewound by the required length from the chain block including two sets. Further, since a required part of the chain is covered with a resin cover, it is possible to prevent the steel material from being scratched when the steel material hung by the chain is inverted.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the traveling beam 2 of the balance-type reversing machine 10
A pair of hanging metal fittings 3 are attached to the central part of the above, and a crane hook 4 hanging from an overhead crane (not shown) is hooked on the pair of hanging metal fittings 2 and is suspended in a balance-like shape.

As shown in detail in FIGS. 2 and 3, two traveling beams 2 are arranged in parallel, and the two traveling beams 2 are integrated by welding ribs 5.
Two sets of trolleys 7 each of which is one set are mounted on the two traveling beams 2 via wheels 6 in the longitudinal direction. Each traveling beam 2 is provided with a trolley positioning plate 8 extending in its longitudinal direction, and a trolley fixing fitting 9 is provided on the trolley 7.

Each trolley 7 has a chain block.
11 chains are hung, and the chain blocks 11 form a pair with two units as one set, and two sets are arranged at symmetrical positions on both sides of the traveling beam 2 in the longitudinal direction. In each chain block 11 group consisting of two units, a chain 12 is wound around in a loop shape and rewound freely, and a required portion of the chain 12 is covered with a resin cover 13. I am doing it.

The trolley positioning plate 8 extending in the longitudinal direction of the traveling beam 2 is provided with a large number of bolt holes (not shown) in the longitudinal direction at a predetermined pitch. The trolley fixing bracket 9 provided on the trolley 7 is fastened with fixing bolts 14. Reference numeral 15 denotes a storage bag for taking in the chain 12 wound on the chain block 11, and when the chain 12 is rewound, the chain 12 is fed out from the storage bag 15.

Next, the operation procedure of the balance type steel material reversing machine 10 of the present invention will be described. FIG. 1 shows a case in which the longest box column 1 is reversed, and the trolley positioning plate 8 extending in the longitudinal direction of the traveling beam 2 is provided with two trolley positioning plates at both end positions.
A set of trolleys 7 is arranged, and trolley fixing fittings 9 provided on the top of each trolley 7 are fastened using fixing bolts 14. When hoisting and reversing the box pillar 1, first, the balance-type steel reversing machine 10 hoisted by an overhead crane is moved to the place where the box pillar 1 is placed.

After the balance type steel material reversing machine 10 is lowered by an overhead crane, two sets of chain blocks (in this case, electric type) 11 are driven to rewind and extend the chain 12, and the box After hanging the loop-shaped chain 12 from below both ends of the pillar 1, the chain 12 is moved to a position where it becomes vertical. Next, the overhead crane is driven to raise the balance-type steel material reversing machine 10, and the box column 1 is lifted via the chain 12.

Subsequently, the chain block 7 of one set of two is set to two.
The sets are driven in synchronism with each other, and the chain 12 is unwound from one chain block 11 and the chain is wound around the other chain block 11 as shown by the solid arrow in FIG. .. In addition,
If necessary, it is possible to invert clockwise as indicated by the dotted arrow. Thus, when the upper surface of the box column 1 becomes the surface on which inspection or grinding is performed, it is transferred to the next process by the overhead crane.

In this way, when the reversing work of the longest box pillar 1 is completed, and when reversing the next short box pillar, the fixing bolt 14 is removed, and the set of two trolleys 7 is put through the wheels 6. And moves the traveling beam 2 toward the center. Thus, when the trolley 7 is moved to a position corresponding to the next short box column, the trolley fixing bracket 9 is fastened by fixing the fixing bolt 14 to the trolley positioning plate 8 to prepare for reversing the next box column.

In the above embodiment, the case where the box column is inverted by the balance type steel material reversing machine has been described, but the present invention is used not only for reversing the box column but also for reversing various steel materials similar to the box column. It is possible.

[0021]

As described above, according to the present invention, steel materials such as box pillars can be inverted with good workability without being damaged, so that various building materials can be efficiently manufactured, and the effect is great. Is.

[Brief description of drawings]

FIG. 1 is an overall front view showing a balance-type steel material reversing machine of the present invention.

FIG. 2 is a partially enlarged front view showing details of a portion A in FIG.

FIG. 3 is a side view showing an arrow AA in FIG.

FIG. 4 is a front view showing a conventional reversing machine.

5 is a side view showing an arrow AA in FIG. 4. FIG.

FIG. 6 is an explanatory view showing a conventional chain structure.

FIG. 7 is a perspective view showing a structure of a box column.

[Explanation of symbols]

 1 Box Pillar 2 Traveling Beam 3 Hanging Bracket 4 Crane Hook 5 Rib 6 Wheel 7 Trolley 8 Trolley Positioning Plate 9 Trolley Fixing Bracket 10 Balance Type Steel Reversing Machine 11 Chain Block 12 Chain 13 Resin Cover 14 Fixing Bolt 15 Storage Bag

Claims (1)

[Claims] 1. A set of two parallel traveling beams suspended integrally from an overhead crane and two units movably mounted on the traveling beams via wheels, respectively. A set of trolleys, a trolley positioning plate extending in the longitudinal direction of each of the traveling beams, a trolley fixing bracket provided on the upper part of each trolley, a chain block suspended on each trolley, and the two units as one unit. A chain that is looped around each pair of chain blocks and is attached so that it can be rolled in and unwound freely, a resin cover that covers the required parts of this chain, and the traveling beams. A balance-type steel material reversing machine comprising a fixing bolt for fastening a trolley fixing metal fitting provided on each trolley at a required position of the provided trolley positioning plate.