JPH0550406B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a reversing direction and apparatus for a heavy object such as a slab.

The heavy objects targeted by the present invention include rectangular parallelepiped metal slabs with rectangular cross sections, concrete wall materials,
It is a thin plate piling product made of steel, wood, paper, glass, etc.

(b) Prior art During the manufacturing process or transportation of heavy objects,
It may be necessary to flip the front and back sides. For example, in steel mills it is necessary to invert surfaces for inspection. This inversion work for inspection is also necessary for thin piling products such as concrete wall materials, steel, wood, paper, and glass.

Furthermore, in steelworks, during blooming rolling or thick plate rolling, 180 degrees
It may be necessary to invert a degree. For example, if a temperature difference occurs between the front and back surfaces of a slab, if rolling is continued, the rolled material will warp or bulge. In addition, in the case of clad materials, when heated with the laminate on the bottom, the laminate may sag due to the difference in coefficient of thermal expansion, and warping may occur during rolling due to the difference in deformation resistance. .

Conventionally, in blooming rolling, a manipulator or the like has been used to reverse the slab. However, this manipulator requires equipment costs.

Japanese Patent Laid-Open No. 56-33120 discloses an apparatus for placing a slab in a turner and turning it over. This device rotates the turner using power. Since this device is fixed within the line equipment, it becomes an obstacle to slab conveyance except during reversing operations.

Japanese Unexamined Patent Publication No. 57-94417 discloses an apparatus for holding and inverting a slab within a circular frame. This device has the same drawbacks as mentioned above, and the entire device is large and complicated.

Japanese Unexamined Patent Publication No. 58-29521 discloses an apparatus for inverting a slab by guiding the slab into a loop of a steel strip and suspending the slab. This device also has drawbacks similar to those mentioned above.

None of the devices discloses or suggests the idea of naturally reversing the slab using its own weight.

(c) Problem to be solved by the invention The problem to be solved by the present invention is to safely and reliably transport heavy objects by making maximum use of their own weight and using simple equipment and minimal power. The purpose is to obtain a method and apparatus for inverting.

(d) Means for Solving the Problems The heavy object reversing method of the present invention includes providing a track in a direction perpendicular to the direction of movement of the heavy object in the heavy object transport line, and a sliding body reciprocating in the width direction of the transport roll on the track. rotatably connecting one end of the sliding body and a heavy object rotating body having a heavy object receiving port; rotatably connecting the other end of the heavy object rotating body to a lifting mechanism; A heavy object receiving port provided in the rotating body is brought into an initial state by substantially matching the height of the heavy object transport line, a transport roll is driven to insert the heavy object into the heavy object receiving port, and the elevating mechanism is Drive the heavy object rotating body to raise one end of the heavy object rotating body to a height approximately equal to the length of the long axis side of the heavy object rotating body and move it in the direction of the conveyor roll width center, and in parallel with this, the connection point between the sliding body and the heavy object rotating body. When the heavy object receiving port almost matches the height of the conveyance line, stop the movement of the lifting mechanism and the sliding body, and then move only the sliding body in the opposite direction toward the starting point position. After the entire lower surface of the heavy object is substantially aligned with the conveyance line, the heavy object is transported from the heavy object receiving opening by driving a conveyor roll. After carrying out the heavy object, the above-mentioned steps are repeated in reverse order. The above-mentioned problem has been solved by means of returning the device to the initial state.

The heavy object reversing device of the present invention includes a track provided on a heavy object transport line in a direction perpendicular to the direction of movement of the heavy object, a sliding body placed on the track, and a reciprocating movement of the sliding body in the width direction of the transport roll. a driving mechanism; a heavy object rotating body having a heavy object receiving port and having one end rotatably connected to the sliding body; and an elevating mechanism having the other end of the heavy object rotating body rotatably connected to a hanging tool. The above-mentioned problem is solved by means consisting of a drive mechanism that reciprocates the hanging tool on the lifting mechanism in the width direction of the transport roll.

(e) Examples Examples of the heavy object reversing method and apparatus of the present invention will be described with reference to the drawings. FIG. 1 shows an example in which the method and apparatus of the present invention are applied to a slab conveying line 10 of a conventional plate rolling facility. The slab S is heated in a heating furnace 1, scale is removed by a hot scale breaker 2, turned over 180 degrees from front to back by a slab reversing device 3 of the present invention, and sent to a rolling mill row 4.

FIGS. 2 and 3 show the construction of an embodiment of the apparatus of the present invention. 4A-4P illustrate the operation of the apparatus and an embodiment of the method of the invention.

Hereinafter, for convenience of explanation, a case where the present invention is applied to the above-mentioned slab conveyance line 10 will be described using a slab as an example of a heavy object.

The main components of the slab reversing device 3 are: a track 31 provided on the slab conveyance line in a direction perpendicular to the advancing direction of the slab S, a sliding body 32 placed on the track 31, and a conveying roll for the sliding body 32. A drive mechanism 33 that reciprocates in the width direction of 11, a heavy object rotating body 34 having a slab receiving port 35 and one end rotatably connected to the sliding body 32, and a hanging tool 342 that connects the other end of the heavy object rotating body 34. It is made up of an elevating mechanism 6 with a hanger rotatably connected to the elevating mechanism, and a drive mechanism 5 that reciprocates the hoist 342 on the elevating mechanism in the width direction of the transport roll.

As shown in FIGS. 2 and 3, the track 31 is provided at a lower position between the conveying rolls 11 of the slab conveying line 10 in a direction perpendicular to the direction of progress of the slab object. This track 31 has a reinforcement material 311 that is stronger than the lower part.
and supported by struts 312. Orbit 3
A plurality of units (two units in FIG. 3) may be provided between the conveying rolls 11 depending on the length of the target slab.

The sliding body 32 is connected to the track 31 as shown in FIG.
mounted on the hydraulic (pneumatic) cylinder, motor,
It reciprocates on the track 31 by a reciprocating drive mechanism 33 such as a chain or screw drive. The sliding body 32 is provided with a bearing 321 and a rotating shaft 322 passed between the bearings. A heavy rotating body 34 is attached to the rotating shaft 322.
One end 340 of is rotatably connected.

The heavy object rotating body 34 turns the slab S over. As shown in FIG. 2, the heavy object rotating body 34 has a rectangular cross-sectional shape in this embodiment, and has a slab receiving opening 35 inside the heavy object rotating body 34. As shown in FIG. Since the heavy object rotating body 34 handles slabs, it has a sturdy structure, and in particular, the slab receiving port 35 and the outer periphery of the heavy object rotating body 34 are made of wear-resistant high-tensile steel. The long side side surface of the slab receiving port 35 is provided parallel to the long axis of the heavy object rotating body 34 (the axis perpendicular to the short side side surface of the heavy object rotating body 34 and parallel to the long side side surface). Alternatively, as shown in FIG. 2, it may be provided so as to be inclined in either direction of rotation. The outer frame on the short side of the heavy object rotating body 34 may be perpendicular to the long side surface of the heavy object rotating body 34, or may be formed into an inclined or other curved surface as shown in FIG.

As shown in FIG. 2, when the heavy object rotating body 34 is in a vertical state,
P' has a higher positional relationship than the transport roll path line.

As shown in FIGS. 2 and 5, one end 340 of the heavy object rotating body 34 is rotatably connected to a rotating shaft 322 provided on the sliding body 32, and the other end 341 is connected to a rotating shaft 322 provided on the sliding body 32. Rotating shaft 347 of tool 342
It is suspended in the. The hanging tool 342 is oil (air)
A beam 34 stretched over the lifting mechanism 6 such as a pressure cylinder
3. The hanging tool 342 is reciprocated horizontally on the beam 343 by a drive motor 345 provided on the beam 343 and a power transmission shaft 346 such as a screw.

The hanging tool 342 may be fixed to the beam 343, or as described in the embodiment, a bevel gear (not shown) or the like may be used to attach the hanging tool 342 to the beam 343 as the power transmission shaft 346 rotates.
It may also be configured to follow the movement upward or downward with respect to 43. As yet another example, the lifting, lowering, and horizontal movement of one end of the heavy object rotating body 34 is not limited to the above-mentioned mechanism, and may be performed simultaneously using a crane or the like, or may be lifted using a winch.

The heavy object rotating body 34 and the devices necessary for driving the heavy object rotating body may be appropriately installed in several units in the slab advancing direction depending on the length of the target slab (in this embodiment, two units are installed).

(F) Operation The operation of the above-mentioned slab reversing device will be explained in connection with the heavy object reversing method of the present invention.

In this example, for convenience of explanation, the slab S
are all set to rotate clockwise (clockwise). To make it rotate in the opposite direction, just set it in the opposite direction.

FIG. 4A shows the slab ready to be received.
In this embodiment, the sliding body 32 on the track 31 is kept on standby on the right side of the drawing by a reciprocating drive device 33. One end 340 of a heavy rotating body 34 having a rectangular cross section is placed on the sliding body 32 . The other end 341 of the heavy object rotating body 34 is suspended by a hanging tool 342. The lower surface of the long side of the slab receiving port 35 of the heavy object rotating body 34 is raised to a height by the lifting mechanism 6 so that it is parallel to the conveying line 10 of the conveying roll 11 and slightly lower than the conveying line 10. The position is adjusted (hereinafter referred to as the initial state).

After setting the heavy object rotating body 34 to this initial state, the conveying roll 11 is rotated to take the slab S into the slab receiving opening 35 (FIG. 4B).

Next, the lifting mechanism 6 is driven to raise one end 341 of the heavy object rotating body 34 to a height approximately equal to the length of the long axis side of the heavy object rotating body 34, and the end 341 is placed on a beam 343 stretched over the lifting mechanism 6. The provided drive motor 345 is rotated, the power transmission shaft 346 is rotated, and the hanger 342 on the beam 343 is moved toward the center of the transport roll width (FIG. 4C).

In parallel with this, the reciprocating drive mechanism 33 moves the sliding body 32 to the left in the plane of the paper, and the connection point between the heavy object rotating body 34 and the sliding body 32, that is, the rotating shaft 3
22 toward the center of the width of the transport roll (FIG. 4D). FIG. 4D shows a state in which the long axis of the heavy object rotating body 34 becomes perpendicular to the conveying path line surface 10 of the conveying roll 11 during this process. At this time, since the slab receiving port 35 is provided to be inclined with respect to the long axis, when the long axis becomes perpendicular to the conveyance path line surface 10, the slab S tilts to the right due to its own weight. Subsequently, as the hanger 342 moves rightward in the drawing, a clockwise rotational force is applied to the heavy object rotating body 34 as well.

As mentioned above, in the vertical state, one corner point P' on the short side of the slab receiving port 35 is positioned higher than the transport roll path line, so that the slab S is always away from the conveying roll 11 except at the beginning of rotation and during 180° rotation, so that the conveying roll 11 is not scratched at the corners of the slab S.

After the rotating shaft 322 passes through the width center of the transport roll 11, the lifting mechanism 6 is lowered, and while lowering one end 341 of the heavy object rotating body connected to the lifting mechanism to just above the transport path line surface 10, the reciprocating drive mechanism 3
3 to move the sliding body 32 to the left in the drawing (FIG. 4E).

Then, the sliding body 32 is subsequently moved to the right in the drawing, so that the lower surface of the long side side surface of the slab receiving port 35 is below the level of the conveyance line 10, and the entire lower surface of the slab S is brought to approximately coincide with the conveyance line 10 (Fig. 4). F). (hereinafter referred to as the end point state).

In this state, the conveyor roll 11 is rotated, the slab S after being reversed is taken out from the slab receiving port 35 (FIG. 4G), and the slab S is supplied to the rolling mill 4 for the next process.

After carrying out the slab, perform the above-mentioned steps in reverse order in the direction of FIG. 4 G to A, and
is returned to its initial state (Fig. 4A).

(g) Effect According to the present invention, the following effects can be obtained.

The present invention utilizes the weight of the heavy object to invert the heavy object, so the mechanism is simplified and power can be reduced.

In the present invention, since the heavy object receiving port is located above the conveyance line, the rolls are not damaged during reversal.

If you rely solely on the weight of the heavy object to restore the rotation of the heavy object, it may not always be possible to return the rotating body of the heavy object to its initial state and position it as planned every time due to inertia during return, frictional force of equipment, wear, etc. No, the present invention uses the weight of the heavy object during rotation, but also uses a lifting and reciprocating drive mechanism, so the heavy object rotating body can be reliably positioned in the initial and final state, and the insertion of the slab is easy.・Smooth unloading.

Furthermore, in the present invention, both ends of the heavy object rotating body are reliably connected to the sliding body and the hanging device through the rotating shaft, so there is no displacement of the fulcrums at both ends of the heavy object rotating body during rotation. No matter how many times the invention is repeated, the heavy rotating body can be reliably positioned at the initial and final positions.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a slab conveyance line in a thick plate rolling facility to which the present invention is applied. FIG. 2 is a front view of a slab reversing device that implements the slab reversing method of the present invention. FIG. 3 is a side view taken from the - line in FIG. 2.
FIGS. 4A to 4G are explanatory views of the operation of the apparatus of the present invention. Fifth
The figure is a perspective view showing the sliding mechanism of the sliding body. 1: Heating furnace, 4: Rolling machine, 3: Heavy object reversing device, 6: Elevating mechanism, 5: Reciprocating drive mechanism, 10: Conveyance path line surface, 11: Conveyance roll, 35: Heavy object receiving port, 34: Weight Object rotating body, 32: sliding body,
31: Track, 321: Bearing, 33: Reciprocating drive mechanism, 322: Rotating shaft, 312: Support column, 311: Reinforcement material, 342: Hanging tool, 340: One end, 341: Other end, 345: Drive motor, 343: Beam , S: Slab (heavy object), 346: Power transmission shaft.

Claims (1)

[Scope of Claims] 1. A track is provided in the heavy object transport line in a direction perpendicular to the direction of movement of the heavy object, a sliding body that reciprocates in the width direction of the transport roll is provided on the track, and the sliding body and the heavy object receiving port are provided. rotatably connecting one end of a heavy object rotating body having a heavy object rotating body, rotatably connecting the other end of the heavy object rotating body to an elevating mechanism, and connecting a heavy object receiving opening provided in the heavy object rotating body to a heavy object rotating body. The initial state should be approximately the same as the height of the conveyance line,
Inserting the heavy object into the heavy object receiving opening by driving the transport roll, and driving the lifting mechanism to raise one end of the heavy object rotating body to a height approximately equal to the length of the long axis side of the heavy object rotating body, and inserting the heavy object into the heavy object receiving port. moving in the direction of the width center; in parallel, moving the connection point between the sliding body and the heavy load rotating body in the same direction as before; when the heavy load receiving port almost matches the height of the conveyance line; Stopping the movement of the lifting mechanism and the sliding body, then moving only the sliding body in the opposite direction toward the starting point position, and after the entire lower surface of the heavy object is approximately aligned with the conveyance line, the heavy object is moved by driving the conveyance rolls. A method for reversing a heavy object, which comprises transporting the object from a heavy object receiving port, and after carrying out the heavy object, carrying out each of the above steps in reverse order to return to the initial state. 2. A track provided in the heavy object transport line in a direction perpendicular to the direction of movement of the heavy object, a sliding body placed on the track, a drive mechanism that reciprocates the sliding body in the width direction of the transport roll, and a heavy object receiver. A heavy object rotating body having an inlet and one end rotatably connected to the sliding body, a lifting mechanism with a hanging device having the other end of the heavy object rotating body rotatably connected to a hanging device, and the lifting mechanism. A heavy object reversing device consisting of a drive mechanism that reciprocates the upper hanging tool in the width direction of the transport roll.