JPH02239095A - Method and device for tilting long-size material - Google Patents

Abstract

PURPOSE:To get rid of shaking, carry out smooth clamping and improve operation efficiency by guiding and supporting a suspending member on guide masts. CONSTITUTION:A pair of guide masts 9 for guiding and supporting a suspending member 13 are suspended downward from a traveling bogie 5. The suspending member 13 which is liftably engaged with the guide masts 9 is installed rotatably in the tilting direction on the lifting member of a wind-up device 6 while holding the suspending member 13 rotatably in the tilting direction with respect to the guide masts 9. The traveling position of the traveling bogie 5 and the lifting up/down position of the suspending member 13 on the wind-up device 6 are detected by their respective detectors and, based on the detected signals of these detectors and set values, the driving devices of the traveling bogie 5 and the wind-up device 6 are controlled so as to lower the suspending member 13 while moving same horizontally. Thereby, a long-size object B is tilted while controlling the moving track of the top end thereof so as to form nearly a circular arc.

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention provides a method for automatically tilting a long material such as an aluminum billet produced in an aluminum foundry. and its equipment. [Conventional technology] In an aluminum foundry, an aluminum billet cast in an aluminum casting machine is transported to a tilting table in front of a soaking furnace.
Although it is necessary to tilt and rotate, many aluminum billets are conveyed at the same time and tilted for reasons such as improving productivity. Conventionally, as shown in FIG. 13, a horizontal suspension beam 53 is suspended from a hook 52 of a hoisting device installed on a traveling cart 51 of an overhead crane 5.0, and one beam is attached to this horizontal suspension beam 53. A large number of hanging jigs 54 were being hung.

In addition, as shown in FIG. 14, when tilting, the lower end of the billet B is locked to the drum 55, and while the traveling trolley 51 is running, the horizontal hanging beam 53 is lowered and tilted. Simple hanging jig 5 from the end of billet B in condition
4 had been removed.

[Problems to be solved by this invention]

However, in the case of the above-mentioned simple lifting device, the simple lifting jig is only suspended and is not restrained in any way, so the crane operator is required to have advanced operating skills to center the lifting jig before slinging. It had been. In addition, since each simple lifting jig moves independently (swings), load swings occur during positioning inching, etc., resulting in poor work efficiency. Furthermore, even during tilting, the crane operator is required to have advanced operating skills because traveling and lowering are combined.

Furthermore, if the simple hanging jig was lowered too far after the billet was tilted, the jig would fall, fall onto peripheral equipment, and cause a collision, which was dangerous. In addition, with the above-mentioned structure, it is necessary to sling the billet and remove the sling from the billet for each billet, which requires a lot of time and labor and is extremely inefficient. Ta. This invention was made to solve the above-mentioned problems, and its purpose is to eliminate load swing, facilitate centering of hanging tools, improve work efficiency, and improve tilting of long materials. It is possible to position and support the hanging equipment afterward, which eliminates the possibility of the hanging equipment falling over, resulting in high safety.Also, it is possible to automatically tilt long materials, and furthermore, when an automatic hanging equipment is used for the hanging equipment, Length that can save labor, save space, and improve transport efficiency)'<'
The purpose is to practice the tilting method and device of II'. [Means for Solving the Problems] The method for tilting a long material according to the invention of ζ is as shown in FIG. While suspending the long material B, the lower part of the long material B is brought into contact with the locking member, and the hanging tool 13 is moved and lowered to bring the lower end of the long material B into contact with the above-mentioned locking member abutting portion, and the long material B is tilted. This is a method for tilting a long material to be rolled, which detects the traveling position of the traveling trolley 5 and the lifting position of the hoist 13 of the hoist W6, and lowers the hoist l3 based on these detection signals and set values. By performing horizontal movement, the long material is controlled and tilted so that the movement locus of the upper end of the long material becomes a substantially circular arc (8th
(see figure).

As shown in FIGS. 1 and 2, the tilting device for a long material according to the present invention includes a hoisting device 6 provided on a traveling cart 5, and a tilting device for a long material B.
A hanging device 13 for grasping the end of the material is connected to a hoisting device 6, and a locking member is provided for abutting and supporting the long material B vertically suspended from the hanging device 13 at a tilting position. Then, a pair of guide masts 9 that can guide and support the hanging device l3 are vertically installed on the traveling cart 5, and these guide masts 9
The hoist L3, which is engaged in a vertically movable manner, is attached to the hoist W. The hanging tool 1 is rotatably attached to the lifting member 6 in the tilting direction.
3 is held rotatably in the tilting direction with respect to the guide mast 9. In addition, a detector for detecting the running position of the traveling trolley 5 and a detector for detecting the lifting position of the hoist 13 are provided on the hoisting device 6, respectively, and the hoist l3 is adjusted based on the detection signals and set values of these detectors. A control device is provided to control the drive devices for driving the traveling carriage 5 and the hoisting device 6, respectively, so that the lowering and horizontal movement are performed alternately as shown in FIG. 8, for example. The hanging tool 13 includes a pair of claw drive shafts 14 disposed on the horizontal hanging beam 8 along the beam longitudinal direction, a drive mechanism that rotates the pair of claw drive shafts 14 in opposite directions, and a drive mechanism that rotates the pair of claw drive shafts 14 in opposite directions. At least one pair of pawl drive shafts 1 are provided.
It is preferable that the gripper comprises a pair of gripping claws 17 attached to each of the gripping claws 4. [Function] Since the hoist 13 is guided and supported by the guide mast 9 and descends, it does not swing and can perform smooth clamping, which does not require advanced crane operating skills and improves work efficiency. be able to. Also, when lowering a long material at a tilting position, a hanging device can be used.
3 is guided and supported by the guide mast 9, so that the long material does not sway, improving work efficiency.

During tilting, the hanging tool 13 is rotatably supported at two points, one on the guide mast side and the other on the ascending member side, so that smooth and reliable tilting can be performed.

When the long material is tilted and becomes horizontal, the hanging tool 13 is supported by the elevating member and also supported by the guide mast 9 via the guide roller 12, so that the hanging tool 13 can be easily removed from the long material. In addition to being able to be detached, even if the elevating member is lowered too much, it is possible to prevent the hanger 13 from falling, colliding with peripheral equipment, and colliding with each other, allowing safe work.

Since tilting is performed by a detector and a control device, in combination with the above-mentioned configuration, smooth and reliable automation of tilting can be achieved. Furthermore, by using an automatic hanging device, it is possible to automate the process of discharging from the casting machine to the tilting table. [Embodiment] The present invention will be explained below based on an embodiment illustrating the invention. This is applied when a large number of aluminum and resin B cast by the aluminum casting machine 1 are transported simultaneously to the tilting table 2 in front of the soaking furnace in an aluminum foundry as shown in Figs. 10 to 12. This is an example in which a traveling trolley 5 that is reciprocated by a traveling device 4 is provided on the equipment frame 3, a hoisting device 6 is installed on this traveling trolley 5, and a winch 6 of the hoisting device 6 is installed.
Install two units A at a distance. As shown in Figure 1,
The winch 6A has a floating sheave 6B, and this sheave 6B
A horizontal suspension beam 8 is attached to the sheave case 6C via the mounting pin 7 so as to extend in a direction perpendicular to the direction of travel of the bogie and to swing in the direction of travel of the bogie. As shown in FIG. 2, a pair of guide masts 9 are attached to a traveling bogie 5 so as to guide and support both ends of the horizontal suspension beam 8 in the longitudinal direction.
It is installed vertically downward. At both ends of the horizontal hanging beam 8, there are shown the lines shown in FIG. As shown in FIG. 2, a link 11 is rotatably attached via a mounting bin 10, and a guide roller 12 that moves within the guide groove 9A (FIG. 6) of the guide mast 9 is attached to the tip of this link 1m. .

The guide mast 9 has an appropriate length, and a guide mast end stopper 9B is provided at the lower end. This end stopper 9B is located at a position where the guide roller 12 hits when the billet B is tilted to a horizontal state, and the hanging tool l3 is placed in a position where the guide roller 12 hits the end stopper 9B.
, and can be supported via links 11.

The hanging tool 13 is designed to be able to automatically grab a large number of billets B at the same time, and as shown in FIG.
It is composed of a drive lever l6, a pair of claws 17, and the like.

The claw drive shaft 14 is connected to the horizontal suspension beam 8 as shown in FIG.
As shown in FIG. 5, the motor cylinder l5
and a pair of drive levers 16 so that they can rotate in opposite directions. As shown in FIG. 2, the pair of claws 17 are arranged in large numbers on the horizontal suspension beam 8 at intervals in the longitudinal direction, and as shown in FIG. A drive lever 16 is opened and closed by expanding and contracting a motor cylinder 15, and a pair of pawls 17 swing to open and close. In the configuration described above, the system operates as follows based on the automatic operation flow shown in Figure 7. (i) Travel the carriage 5 from the standby position to a predetermined position on the casting machine with the horizontal hanging beam 8 hoisted up. (11) The pair of pawls 13 closes the pair of drive levers 16 using the motor cylinder 15 to keep them open, lowers the horizontal hanging beam 8, and the pair of pawls 17 erects the billet B with a predetermined precision. Stop lowering when it reaches the upper end.

(iii) If the motor cylinder 15 is operated in the claw closing direction in this state, all the pairs of claws 17 will be closed simultaneously via the claw drive shaft l4, and a large number of billets B will be
are grasped at the same time by Here, since the horizontal suspension beam 8 is guided and lowered by the guide mast 9, the pair of claws 17 do not shake, and smooth automatic clamping can be performed, without requiring advanced crane operating skills. In addition, work efficiency can be further improved. (iv) When the gripping is completed, the horizontal hanging beam 8 is hoisted up and conveyed to the tilting table 2. (V) As shown in FIG. 8, above the drum 18,
Lower the horizontal hanging beam 8. Here, the horizontal suspension beam 8 is guided and lowered by the guide mast 9, and the pair of claws 17 are integrally attached to the horizontal suspension beam 8, so that each billet B is prevented from swinging as in the conventional case. Work efficiency can be improved without causing any problems. (vi) After the lower end of billet B reaches the locking position of drum 18, tilting is performed by traveling of traveling carriage 5 and lowering of hoisting device 6. In the present invention, the running of the traveling carriage 5 and the lowering of the hoisting device 6 are alternately performed as shown in FIG. 8, and the carriage is automatically tilted. That is, a pattern is created by dividing the tilting range from 0 to 90'' into several parts as shown in Figure 8, taking into account the radius of rotation when the aluminum billet is tilted, and this pattern is stored in the control device. The lowering height and traveling position are detected by a pulse generator connected to the motor, and when a certain lowering height is reached, the traveling motor is started, and then stopped when it has traveled a set distance, and this is repeated in sequence to automatically Billet B
Tilt it. Incidentally, at this time, the travel of the traveling trolley 5 and the lowering of the hoisting device 6 may be performed at the same time. Here, as shown in FIG. 1, the horizontal hanging beam 8 has a support point on the guide mast side (bin 10) and a support point on the sheave side (
Since it is supported at two points on the bottle 7), the horizontal hanging beam 8 (claw 17) is tilted and supported smoothly and reliably, and the billet B
is carried out smoothly and reliably.

(vi) When the billet B is tilted to a horizontal state, the pair of claws 17 are opened by the motor cylinder l5, and the carriage 5 is run at a slow speed toward the casting machine, so that the hanging tool 13 is released from the billet B. (See Figure 1).

Since the horizontal hanging beam 8 is supported by the sheave 6B and also by the guide mast 9 via the end stopper 9B, guide roller l2, and link 11, the hanging tool l3 is released while being positioned and tilted. ,
The hanging tool 13 can be easily removed from the billet B. Also,
Even if the sheave 6B is lowered too far, the hanging tool 13 is supported by the guide mast 9 via links etc.
This prevents the hanging tool 13 from falling over, colliding with peripheral equipment, and allowing safe work. (vi) When the horizontal hanging beam 8 is hoisted up, the hanging tool 13 returns to its original state and travels to the standby position. In addition, although the above description has been made regarding a hanging device for hanging a large number of items at the same time, it goes without saying that the present invention can also be applied to a hanging device for hanging only one item. Further, the actuator for driving the pair of claws is not limited to a motor cylinder, but may also be a fluid pressure cylinder or the like, and the pair of claws may be manually clamped and unclamped. Further, although the guide roller 12 is attached to the horizontal suspension beam 8 via the link 11, the present invention is not limited to this, and the link 11 may be omitted and the guide roller 12 may be directly attached to the horizontal suspension beam 8 as shown in FIG. .

In addition, although the above description has been made regarding the aluminum beam left of an aluminum foundry, it goes without saying that the present invention can also be applied to other long materials. [Effects of the Invention] As described above, the present invention provides a pair of guide masts on a traveling truck, a lifting device is pivotally attached to an elevating member of a hoisting device, and is rotatably connected to the guide masts via a guide roller. By making the hanging tool descend and move horizontally, the locus of movement of the upper end of the long material is controlled to be approximately an arc, and the long material is tilted, resulting in the following effects. (i) Since the lifting equipment is guided and supported by the guide mast, it does not shake and can perform smooth clamping.
Work efficiency can be improved without requiring advanced crane operating techniques as in the past. (ii) When lowering a long material at the flJ1 transposition, the hanging tool is guided and supported, so the long material does not swing, improving work efficiency. (iii) During tilting, since the hanging tool is rotatably supported at two points, smooth and reliable tilting can be performed. (iv) After tilting, the sling is supported at two points, so
It becomes easier to leave. It also prevents the lifting equipment from falling over, colliding with peripheral equipment, and colliding with other equipment, allowing for safer work. (v) Since tilting is performed by a detector and a control device, in combination with the above-mentioned configuration, smooth and reliable automation of tilting can be achieved. (vi) If an automatic hanging device is used as a hanging device, it is possible to eliminate the work of slinging and removing the slings as required in the past, and when hanging or lowering a large number of pieces at the same time, the long pieces can be hung without moving relative to each other.
It can save labor, save space, and improve transport efficiency. (vi) By automating the hanging, conveyance, and tilting of long materials, production efficiency and conveyance efficiency can be improved.

[Brief explanation of drawings]

Fig. 1 is a side view showing the conveying and tilting device of the present invention, Fig. 2 is a front view showing the hanging device, and Figs. 3, 4, 5, and 6 are the , ■ line, V line sectional view, ■ line arrow view,
Figure 7 is a flowchart of automatic operation, Figure 8 is a schematic explanatory diagram showing the tilting situation, Figure 9 is a modification of the guide roller part, and Figures 10, 11, and 12 are aluminum casting equipment. Plan view. A side view, a front view, and FIG. 13 are general views showing the conventional equipment, and FIG. 14 is a schematic diagram showing the conventional tilting state. 1...Aluminum casting machine, 2...Tilting table, 3...Device mount, 4...Traveling device, 5...Travelling Trolley, 6...Hoisting device, 6A...Winch, 6B...Idle sheave, 6C...Sheave case, 7...
Mounting bin, 8... Horizontal suspension beam, 9... Guide mast, 9A... Guide groove, 9B...
・Guide mast end stopper 10...Mounting hinge, l1...Link, 12...Guide roller, 13...Hanging tool, 14...
・Claw drive shaft, l5...Motor cylinder, 16
......Drive lever l7...Claw, 18.
·····drum.

Claims (4)

[Claims] (1) A long material is hung vertically by a hanging device installed on a traveling cart so that it can be raised and lowered, and the lower part of the long material is brought into contact with a locking member, and the hanging device is moved and lowered to hang the long material. A method for tilting a long material in which the lower end is brought into contact with the locking member abutting part, and the traveling position of the traveling trolley and the lifting position of the hoisting device of the hoisting device are detected, and these The long material is tilted by controlling the movement locus of the upper end of the long material to form a substantially circular arc by causing the hanging tool to descend and move horizontally based on a detection signal and a set value. How to tilt the shaku material. (2) A hoisting device is installed on the traveling trolley, a hanging device that grips the end of the long material is connected to the hoisting device, and the long material that is vertically hung from the hanging device is placed in a tilting position. A tilting device for a long material, which is provided with a locking member for contacting and supporting, in which a pair of guide masts capable of guiding and supporting a hanging device are vertically disposed on the traveling cart, and can be freely raised and lowered by the guide masts. The hanging tool engaged with the hoisting device is pivoted to a lifting member of a hoisting device so as to be rotatable in the tilting direction, and the hanging tool is held with respect to the guide mast so as to be rotatable in the tilting direction. Tilt device for long materials. (3) The traveling trolley is equipped with a detector that detects the traveling position, and the hoisting device is equipped with a detector that detects the lifting position of the lifting device, and the lifting device is lowered and moved horizontally based on the detection signals and set values of these detectors. 3. The device for tilting a long material according to claim 2, further comprising a control device that controls a drive device that drives the traveling carriage and the hoisting device, respectively, so as to perform the following operations. (4) The hanging device includes a pair of claw drive shafts disposed on the horizontal suspension beam along the beam longitudinal direction, a drive mechanism that rotates the pair of claw drive shafts in opposite directions, and at least a drive mechanism that rotates the pair of claw drive shafts in opposite directions. 4. The device for tilting a long material according to claim 2, further comprising a pair of gripping claws arranged as a set and attached to each of the pair of claw drive shafts.