JP7019997B2 - Round steel ingot transfer device - Google Patents

Description

The present invention relates to a transport device for transporting a round steel ingot between a movable region such as an overhead crane in a steel factory or the like and a region outside the region.

For example, in order to safely transport round steel in a steel factory, a pair of left and right claws with a U-shaped side view that opens laterally are attached to the underside of the suspended beam, and along the lower side of each claw. There has been proposed a round steel transport crane provided with a rotary lever that can be raised and lowered (see, for example, Patent Document 1).
However, there is a problem that the above-mentioned round steel transport crane alone cannot transport round steel to the vicinity of the entrance / exit of a steelmaking factory outside the movable area of the crane or to another adjacent steelmaking factory. ..

On the other hand, in order to transport the round steel and the square steel along the horizontal direction, the round steel and the square steel can be mixedly transported, the round steel can be constantly rotated and cooled, and the square steel can be loaded and transported, so that the round steel and the square steel can be sequentially transported. A chain conveyor for forward feed and a chain for reverse feed are arranged side by side in a plan view, and a high top plate with a high loading portion and a low top plate with a low loading portion are alternately connected. Is individually mounted on each of the above conveyors. Then, the square steel is loaded on each of the high top plates, and the round steel is loaded on each of the low top plates, and the round steel and the square steel are repeatedly fed forward and backward along the horizontal direction. A cooling bed for steel bars that is mixed and transported has also been proposed (see, for example, Patent Document 2).
However, in the cooling floor for upper bar steel, round steel and the like are only cooled while being transported along the horizontal direction, and transportation in cooperation with an overhead crane is not considered.

Jikkai Sho 61-181073 (Figs. 1 and 2) Japanese Unexamined Patent Publication No. 8-174037 (pages 1 to 6, FIGS. 1 to 6)

The present invention solves the problems described in the background art, and safely and surely moves the round steel ingot transported by an overhead crane or the like to a region outside the movable region of the overhead crane along the horizontal direction. An object of the present invention is to provide a transport device for round steel ingots that can be transported and can be arranged at a relatively low cost.

Means for solving problems and the effect of the invention

In order to solve the above problems, the present invention has a shortest distance between a region on the carry-in side, which is a movable region such as an overhead crane, and a region on the carry-out side, which is outside the region, in a plan view. A plurality of chains longer than the chain are stretched and fixed, and the intermediate part of the chain or the like is lifted upward to transport the round steel ingot placed on the chain or the like while rotating along its radial direction. It was made with the idea of doing.
That is, in the round steel ingot transport device (claim 1) according to the present invention, a columnar round steel ingot having an axial direction horizontal to the floor is placed along the radial direction of the round steel ingot. A device for transporting, one end side is fixed to the carry-in side area on the floor, and the other end side is fixed to the carry-out side area on the floor away from the carry-in side area, and a flat surface. Multiple chains or ropes that are longer than the linear distance between the carry-in side area and the carry-out side area in the visual direction and are stretched parallel to each other in the plan view, and are perpendicular to the floor. A plurality of fluid pressure cylinders erected in a shape and an intermediate portion of each of the plurality of chains or each of the ropes attached to the upper end of a piston rod that can be raised and lowered in the vertical direction from the fluid pressure cylinder. A pulley or sprocket for winding and individually raising and lowering the chain or an intermediate portion of the rope , wherein the plurality of chains or ropes are placed on them in an axially orthogonal manner. It is characterized in that it supports a round steel ingot and transports the round steel ingot from a region on the carry-in side toward a region on the carry-out side while rotating the round steel ingot along the radial direction .

According to the transfer device, the following effects (1) and (2) can be obtained.
(1) The round steel ingots conveyed by an overhead crane are placed on the plurality of chains or a plurality of wire ropes located on the carry-in side on the floor in an orthogonal manner, and the plurality of fluids. By raising the piston rod for each compression cylinder, the middle portion of the chain or rope is lifted and brought into a pulled state, so that the chain or the like can be raised in an oblique posture. As a result, the round steel ingot that has risen together with the chain or rope can be rolled to the lower unloading side by its rotation, and can be transported at a relatively low speed, and is separately stocked in advance on the unloading side. It is also possible to mitigate the collision with the round steel ingot.
(2) All the components can be arranged on the floor, and the device configuration is relatively simple as compared with the cooling floor for steel bars of Patent Document 2, so that the equipment can be manufactured at low cost. , Maintenance of this transfer device can be easily performed.

The round steel ingot has a cylindrical shape made of, for example, tool steel or stainless steel, has a diameter of about 70 cm, a length (shaft length) of about 3.3 to 3.5 m, and a weight of about 10 tons. ..
The round steel ingot is made by casting molten steel in a cavity having a substantially cylindrical shape, and is in the process of lowering the temperature from a high temperature state of several hundred degrees Celsius to around room temperature for about one to several days, for example.
The round steel ingot is transported in the steelmaking factory by an overhead crane, and while being cooled in a posture in which a plurality of the round steel ingots are sequentially arranged in parallel at a position outside the transport area of the overhead crane. Be stocked. The transport device of the present invention is also used for this purpose.
Further, the overhead crane is, for example, a stripper crane, and a tong or the like is attached to the lower end side thereof.
Further, the fluid pressure cylinder is an air cylinder or a hydraulic cylinder.
Further, two or more of the chains or ropes are arranged in parallel with each other.

Further, the chain is a chain chain or a roller chain.
The rope is a metal rope such as a wire rope or a fiber (linen, cotton, vinylon, nylon, etc.) rope.
Further, when the round steel ingot is placed orthogonally in a plan view on one end (carry-in) side of the chain or rope, the chain or rope exhibits an inverted F shape in a side view, but the fluid pressure cylinder. When the piston rod is raised and the pulley or sprocket located at the upper end thereof is raised, the piston rod is pulled along the longitudinal direction, so that the piston rod is deformed into a linear shape having a gently inclined side in a side view. Along such a gently inclined side, the round steel ingot can be transported to a position on the other end (delivery) side of the chain or the like and outside the transport region of the overhead crane by rolling at a low speed due to rotation.
In addition, the upper part of the chain or rope on the carry-out side on the floor can also serve as a cooling zone (cooling floor) for the round steel ingot carried in at a high temperature.

The present invention also includes a round steel ingot transport device (claim 2) in which a plurality of racks inclined on the carry-in side are erected in the carry-in side area on the floor.
According to this, in addition to the above-mentioned effects (1) and (2), the following effect (3) can be obtained.
(3) Since the operator of the overhead crane can visually lower the round steel ingot to be transported to the required position by visual inspection from a high place, and the operation of operating the transfer device can be performed automatically or by the operation of the operator. , Labor saving is possible.
It is recommended that the plurality of racks have the same number as the plurality of elevating portions having the pulley or the like on the upper end side, or be erected one more than the total number of the elevating portions.

Further, in the present invention, the fluid pressure cylinder is disposed between the recesses of the pair of shaped steels erected adjacently from the floor, and inside the recesses of the pair of shaped steels, the said. Also included is a round steel ingot transport device (claim 3) that supports the pulley or sprocket in an ascending / descending manner via a plurality of guide rollers.
According to this, the piston rod that moves up and down from the fluid pressure cylinder and the pulley or sprocket that is rotatably attached to the upper end portion thereof have a plurality of guide rollers that roll inside the recesses of the pair of shaped steels. It is arranged (supported) so that it can be raised and lowered via. Therefore, even if the round steel ingot carried in carelessly comes into contact with the shaped steel, it is unlikely to be damaged or broken, so that the effect (1) can be obtained more reliably.
The upper ends of the pair of shaped steels are connected to each other so that the space between them does not expand and the pulley or sprocket does not hinder the raising and lowering of the pulley or sprocket.

Further, in the present invention, the shaped steel is channel steel or H steel, and the plurality of guide rollers roll on the inner wall surface of the channel steel or H steel, and a transport device for round steel ingots (claimed). Item 4) is also included.
According to this, the pulley or sprocket attached to the upper end of the piston rod is supported up and down by a plurality of guide rollers that roll on the inner wall surfaces of the recesses of the pair of shaped steels. As a result, the pulley or sprocket can be raised accurately at the required height, so that the effect (1) can be obtained more remarkably.

In addition, in the present invention, the chain is a chain chain or a roller chain in which a plurality of circular or oval ring pieces are connected, and the rope is a wire rope, which is a transport device for round steel ingots. (Claim 5) is also included.
According to this, since the heavy round steel ingot is freely deformed while being lifted by the chain chain, the roller chain, or the wire rope, the effect (1) can be surely obtained.

The perspective view which shows the outline in the transport device of one form of a round steel ingot according to this invention. (A) is a perspective view showing one elevating part in the above-mentioned transport device, and (B) and (C) are vertical cross-sectional views of the elevating part by different visual senses. (A) to (C) are schematic views showing the upper end side of the elevating part having different forms from each other. (A) to (C) are schematic views showing the operation of the said transport device.

Hereinafter, embodiments for carrying out the present invention will be described.
FIG. 1 is a perspective view showing an outline of a round steel ingot transfer device (hereinafter, simply referred to as a transfer device) 1 which is one form.
As shown in FIG. 1, the round steel ingot transport device 1 is in a posture perpendicular to the carry-in side region IN on the left side indicated by the arrow of the XX line in FIG. 1 on a flat floor F made of concrete. A pair (plural) elevating portions 2 standing upright, a pair (plural) racks 19 standing adjacent to them at a slight angle, and one end side 11 fixed to the above area IN and the other end side. 12 is provided with a pair (plural) chain chains c1 having a parallel plan view fixed to the end side of the region OUT on the carry-out side, which is the right side indicated by the arrow of the YY line in FIG. There is. As shown in the figure, a cylindrical round steel ingot W is placed on the pair of chain chains c1 and is capable of rolling due to its rotation.
The area IN on the carry-in side is an area where the overhead crane (not shown) can move upward, and the area OUT on the carry-out side is an area where the overhead crane cannot move.

As shown in FIGS. 2A to 2C, the elevating portion 2 consists of a pair of left and right shaped steels 3 that are symmetrically erected adjacent to the floor F and recesses 4 of the pair of shaped steels 3. An air cylinder (fluid pressure cylinder) 5 vertically arranged in the space between the air cylinders 5, a piston rod 6 that moves up and down in the vertical direction from the air cylinder 5, and a bearing 7 on the upper end side of the piston rod 6 are interposed. It includes a pulley 8 rotatably attached to the bearing 7 and a pair of guide rollers 14 rotatably and symmetrically attached to the outer surface of the bearing 7.
A pair of left and right reinforcing members (stays) 18 inclined toward the region OUT side on the carry-out side are individually and parallelly fixed to each outer surface of the pair of shaped steels 3. Further, on the outside of the pair of shaped steels 3 on the region IN side on the carry-in side, one end side of the chain chain c1 is coupled to a metal fitting 11 fixed to the floor F. The metal fitting 11 is installed outside the gap between the pair of shaped steels 3.

Further, as shown in FIGS. 2A to 2C, a pair of guide rollers 14 are rotatably and individually pivotally supported on the outer surface of the bearing 7, and the circumferential surface of the guide rollers 14 is rotatably and individually supported. It is possible to roll with respect to a pair of inner wall surfaces facing each other in the recess 4 of each of the adjacent shaped steels 3. In addition, the outermost peripheral portion of the pulley 8 projects outward from the front and rear through the gap between the pair of shaped steels 3.
As shown in FIGS. 2B, 2C, and 3A, the pulley 8 has a wide and shallow outer concave groove 9 and a narrow inner groove 9 located in the center of the bottom surface of the outer concave groove 9. The concave groove 10 is provided along the entire circumference thereof. The bottom surface of the outer concave groove 9 is in contact with the side surfaces of a plurality of metal rings (rings) having an oval shape constituting the chain chain c1. On the other hand, in the inner concave groove 10, another plurality of metal rings that are alternately connected to each other and are connected to each other in a posture in which the major axis directions are orthogonal to each other enter every other metal ring. It is possible.
The large number of metal rings constituting the chain chain c1 may have a circular shape or an elliptical shape.

That is, one end side of the chain chain c1 is fixed to the metal fitting 11 of the region IN on the carry-in side, and the other end side is fixed to the metal fitting 12 provided on the end side of the area OUT on the carry-out side. The length (total length) is set in advance so as to be longer than the straight line (shortest) distance between the metal fittings 11 and 12 in a plan view. The chain chain c1 can be raised and lowered while its intermediate portion is supported by the pulley 8. Therefore, as shown in FIGS. 2A and 2B, the intermediate portion of the chain chain c1 is movable in the gap between the pair of shaped steels 3.

As shown in FIG. 3B, a roller chain c2 may be used instead of the chain chain c1. In this case, instead of the pulley 8, the sprocket (chain gear) 16 is supported so as to be able to move up and down via the bearing 7, and the plurality of sharp teeth 17 of the sprocket 16 individually mesh with the rollers of the roller chain c2. ing.
Further, instead of the chains c1 and c2, a wire rope (rope) wr may be used as shown in FIG. 3C. In this case, the pulley 8 may be used, but as shown in the figure, the pulley 8a having only the (outer) concave groove 9 may be used.

Hereinafter, the operation of the transfer device 1 will be described with reference to FIG.
In advance, in a steelmaking factory, molten steel is cast into a mold having a cylindrical cavity (none of which is shown), and a plurality of round steel ingots W having a cylindrical shape as a whole are sequentially manufactured. The round steel ingot W is in a high temperature state of several hundreds of degrees Celsius.
Of the above, one of the round steel ingots W1 is held in a substantially horizontal position in the axial direction by a tongue 20 arranged on the lower end side of an overhead crane such as a stripper crane traveling near the ceiling in the steel mill. After lifting and transporting along the horizontal direction, as shown by the white arrow in FIG. 4 (A), the round steel ingot W1 is carried in with the inclined surface of the pair of racks 19 as a target (mark). It is placed on a pair of chain chains c1 located on the floor F in the region IN so that the axial directions are orthogonal to each other.

As shown by the broken line arrow in FIG. 4A, the pulley 8 is lowered to an intermediate position of the shaped steel 3 of the elevating part 2 in advance by operating the air cylinder 5. Therefore, the chain chain c1 has an inverted C shape in a side view between the pulley 8 and the metal fitting 12 located on the end side of the region OUT on the carry-out side.
Next, after confirming that the round steel ingot W1 is placed on the chain chain c1 near the pair of racks 19, the operator of the overhead crane remotely controls the high-pressure air in the air cylinder 5. Do not supply from an air source.
The operation of the air cylinder 5 is automatically performed by detecting the placement of the round steel ingot W1 on the chain chain c1 by a phototube or a limit switch (not shown) and automatically via a timer (not shown). You may be able to do it.

As a result, as shown by the solid arrow in FIG. 4B, the pulley 8 rises to the upper end side of the elevating portion 2 together with the piston rod 6. Along with this, the pair of chain chains c1 slide in the outer concave groove 9 and the inner concave groove 10 of the pulley 8 as the pulley 8 rises, and in the region IN on the carry-in side. While moving to the metal fitting 11, the pulley 8 and the metal fitting 12 located on the end side of the region OUT on the carry-out side are in a pulled state.
As a result, as shown by the broken line arrow in FIG. 4, in the pair of chain chains c1, the intermediate portion on the pulley 8 side of the pair of chain chains c1 is greatly raised, and between the pulley 8 and the metal fitting 12. Transforms into a linearly inclined posture.

When the pair of chain chains c1 are in the inclined posture, the round steel ingot W1 is carried out on the pair of chain chains c1 at a low height as shown by the arrow of the alternate long and short dash line in FIG. 4 ( B). It starts rolling at a relatively low speed while rotating toward the metal fitting 12 side on the side region OUT side. As a result, the round steel ingot W1 moves on the chain chain c1 near the metal fitting 12, comes into contact with a stopper (not shown), and stops.
After that, the operation of alternately repeating the lowering and the ascending of the pulley 8 is performed.
As a result, the round steel ingots W2 and W3 sequentially carried into the region IN on the sequentially carried-in side rise from the floor F side to the pulley 8 side in an oblique posture as shown in FIG. 4C. It rolls on the chain c1 toward the metal fitting 12 while rotating in sequence.

The round steel ingots W1 to W3 (to Wn) arranged in parallel near the metal fitting 12 on the output side region OUT side are the circles located on the right end side in FIG. 4 (C) after being cooled to a predetermined temperature range. From the steel ingot W1, it is sequentially placed on a fork piece of a forklift (not shown), slung, or lifted by an on-board crane, etc., in another factory or on the loading platform of a truck (not shown). Will be carried out to.
According to the above-mentioned actions, it can be easily understood that the above-mentioned effect (1) can be obtained by the present transport device 1.
Further, the driving portion is extremely small like the air cylinder 5, the piston rod 6, and the pulley 8, and a pair (plural) chain chains c1 are placed between two positions (11, 12) on the floor F. Since it has a relatively simple structure that is only stretched, it is less likely to break down and maintenance is easy (effect (2) above).

Moreover, since it is possible to operate only by the operator of the overhead crane and to operate automatically in conjunction with the operation, it can contribute to labor saving (the above effect (3)).
Instead of the chain chain c1, the roller chain c2 in which the sprocket 16 is used in combination or the wire rope wr in which the pulley 8a is used in combination may be used.

The present invention is not limited to the above-mentioned form.
For example, the chain chain c1 or the like may be stretched in the same manner as described above by making three or more chains parallel to each other in a plan view.
Further, although the rack 19 has a side surface inclined toward the region IN side on the carry-in side, the rack 19 may have a curved surface gently inclined to either the region IN on the carry-in side or the region OUT on the carry-out side. Including these forms, three or more racks (19) may be arranged in parallel with each other in a plan view and erected at the same positions.
Further, when the round steel ingot is near room temperature, a fiber rope such as a hemp rope or vinylon may be used instead of the wire rope wr.

Further, a hydraulic cylinder or a hydraulic cylinder may be used instead of the air cylinder 5.
Further, the means for carrying (lowering) the round steel ingot into the region IN on the carry-in side may be a hoist (winding device), and in this case, the transport device 1 or the like is operated by the operation of the operator of the hoist. It becomes possible to do.
In addition, the round steel ingot that is the subject of the present invention may be a steel bar having a diameter of several cm to several ten and several cm. It may be lowered and placed on the ceiling.

According to the present invention, a round steel ingot transported by an overhead crane or the like can be safely and reliably transported along a horizontal direction to a region outside the movable region of the overhead crane, and is arranged at a relatively low cost. It is possible to reliably provide a transport device for round steel ingots.

1 ……………… Conveyor device for round steel ingots 3 ……………… Shaped steel 4 ……………… Recessed 5 ……………… Air cylinder (fluid pressure cylinder)
8,8a …… Pulley 11 ………… One end side / metal fittings 12 ………… End side / metal fittings 14 ………… Guide roller 16 ………… Sprocket 19 ………… Rack F ……………… Floor c1, c2 ... Chain W, Wn ... Round steel ingot OUT ......... Area on the carry-out side IN ......... Area on the carry-in side

Claims (5)

A device that conveys a cylindrical round steel ingot whose axial direction is horizontal with respect to the floor along the radial direction of the round steel ingot.
One end side is fixed to the carry-in side area on the floor, and the other end side is fixed to the carry-out side area on the floor away from the carry-in side area, and the carry-in side area in a plan view. With multiple chains or ropes that are longer than the linear distance between the and the area on the carry-out side and are stretched parallel to each other in a plan view.
A plurality of fluid pressure cylinders erected vertically on the floor,
Attached to the upper end of a piston rod that can be raised and lowered vertically from the fluid pressure cylinder, the intermediate portion of each of the plurality of chains or each of the ropes is wound, and the middle of the chains or the ropes. Includes pulleys or sprockets that raise and lower parts individually,
The plurality of chains or ropes support the round steel ingot placed on them at right angles in the axial direction, and rotate the round steel ingot along the radial direction from the region on the carry-in side. Transport toward the carry-out area,
A transport device for round steel ingots, which is characterized by this. In the area on the carry-in side on the floor, a plurality of racks inclined to the carry-in side are erected.
The round steel ingot transfer device according to claim 1. The fluid pressure cylinder is arranged between recesses of a pair of shaped steels erected adjacent to each other from the floor, and a plurality of guides of the pulley or sprocket are guided inside the recesses of the pair of shaped steels. Arranged so that it can be raised and lowered via rollers,
The round steel ingot transfer device according to claim 1 or 2. The shaped steel is channel steel or H steel, and the plurality of guide rollers roll on the inner wall surface of the channel steel or H steel.
The method for transporting round steel ingots according to claim 3. The chain is a chain chain or a roller chain in which a plurality of circular or oval ring pieces are connected, and the rope is a wire rope.
The device for transporting round steel ingots according to any one of claims 1 to 4, wherein the ingot is conveyed.

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