JPH02225291A - Automatic suspending tool for long member - Google Patents

Abstract

PURPOSE:To automatically suspend a number of long members at the same time by arranging a pair of hook driving shafts in the longitudinal direction of a beam onto a horizontal suspended beam and fixing the basic edges of a pair of driving levers which are opened and closed by an actuator onto each of a pair hook driving shafts and installing a number of pairs of catching hooks onto a pair of hook driving shafts. CONSTITUTION:When a pair of driving levers 12 are opened by operating a motor cylinder 11, a pair of hook driving shafts 9 are revolved in the reverse direction each other for a horizontal suspended beam 8. Through this revolution, all pairs of hooks 13 are swung in the closing direction, and the edge parts of a number of long members B are caught at the same time, and a number of long members B are automatically suspended.

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to the transportation and transportation of aluminum billets in an aluminum foundry.
This invention relates to an automatic hoist for long materials used for tilting, etc.

[Prior art]

In an aluminum casting factory, it is necessary to transport the aluminum billets cast by the aluminum casting machine to the tilting table in front of the soaking furnace, but for reasons such as productivity in the factory, it is not possible to transport a large number of aluminum billets at the same time. It is being done.

Conventionally, as shown in FIG. 14, a hook 5 of a hoisting device installed on a traveling carriage 51 of an overhead crane 50
2, a horizontal hanging beam 53 is suspended, and a large number of simple hanging jigs 54 for hanging one rod are suspended from the horizontal hanging beam 53 via U-links for lifting. As shown in FIG. 15, for example, this lifting jig 54 has a hanging jig main body 54A made of a mouth-shaped frame, and has a bottle insertion hole 55 for lifting at the center of the upper part thereof, and is slidable on the lower side thereof. A gripping pad 54B is provided on one side, and a tightening screw 5 is provided on the other side.
A gripping head 54C is provided which is movable forward and backward by the lever 6 and rotatably supported via the ball 57, and the hanging jig 54
When the billet B is lifted in the direction of the arrow A, the billet B is clamped by the gripping head 54C using its own weight.

[Problems to be solved by this invention]

However, with the above-mentioned simple hanging device, it is necessary to tighten the screws to clamp the billet and loosen the screws to unclamp the billet for each billet, which takes a lot of time and labor, and is extremely inefficient. It had become.

Furthermore, since each simple lifting jig is suspended so that it can move (swing) independently, the crane operator was required to have advanced operating skills to center the sling on the previous hoisting jig.

This invention was made in view of these circumstances,
The purpose is to be able to automatically and simultaneously suspend many long materials such as cast aluminum billets, thereby saving labor.
An object of the present invention is to provide a long automatic hoist that can save labor and improve transport efficiency.

[Means to solve the problem]

As shown in FIGS. 1 to 4, the automatic long material lifting tool according to the present invention includes a horizontal hanging beam 8 with a pair of claw drive shafts 9 disposed along the longitudinal direction of the beam, and a moder cylinder 11. The base ends of a pair of drive levers 12 that are opened and closed by actuators such as the above are fixed to each of the pair of claw drive shafts 9, and a large number of pairs of gripping claws 13 are arranged at intervals in the axial direction of the claw drive shaft 9. , and attached to each of the pair of claw drive shafts 9.

Further, as shown in FIGS. 6 to 9, in the pair of claws 13, one claw 13A is fixed to one of the claw drive shafts 9, and the other claw 13B is rotatably fixed to the other claw drive shaft 9. It is preferable to connect to the transmission lever 14 via a spring 15 which can be attached and fixed to the transmission lever 14 and can press the rotary claw 13B in the closing direction.

[For production]

When the actuator is actuated to open the pair of drive levers 12, the pair of claw drive shafts 9 rotate in opposite directions, and all the pairs of claws 13 swing in the closing direction, causing the ends of many long materials to be is grasped at the same time, and many long materials are automatically suspended.

Further, even if there is a variation in the diameter of the elongated material or a difference in the torsion angle of the claw drive shaft 9, this can be absorbed by displacing the rotary claw 13B with respect to the transmission lever 14 against the spring 15.

〔Example〕

The present invention will be described below based on an illustrated embodiment.

This is applied when a large number of aluminum casting machines) 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. 11 to 13. This is an example in which a traveling trolley 5 that is reciprocated by a traveling device 4 is provided on a device mount 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 FIG. 1, the winch 6A has a floating sheave 6B, and a sheave case 6C of this sheave 6B has a mounting pin 7.
A horizontal hanging beam 8 is attached via the horizontal suspension beam 8 so as to extend in a direction perpendicular to the running direction of the bogie and swing in the running direction of the bogie.

A pawl drive shaft 9 is rotatably attached to both sides of the horizontal suspension beam 8 via a number of support brackets 10, and can be rotated in opposite directions by a moder cylinder 11 and a pair of drive levers 12. As shown in FIG. 1, the modele cylinder 11 and the drive lever 12 are arranged as a pair at intervals in the axial direction of the pawl drive shaft 9, and as shown in FIG. Claw drive shaft 9 at the end
1. Fix one end to the base of the mottle cylinder 11. A pair of N
When the lever 12 is opened and closed, a pair of claws 13 shown in FIG. 3 swing open and close. As shown in FIG. 4, a stopper 21 is attached to the base of the drive lever 12 to set the open position of the pair of claws 13.

As shown in FIG. 1, these pair of claws 13 are provided seven on each side of the horizontal hanging beam 8, and the sixth
As shown in the figures, a fixed claw 13A has one claw fixed to the claw drive shaft 9 via a key, and a rotary claw 13B has the other claw rotatably attached to the claw drive shaft 9.

This rotary mold 13B consists of a claw portion similar to the fixed claw 13A and a frame-shaped locking piece 13C that integrally rises from the claw portion.

A transmission lever 14 fixed to the pawl drive shaft 9 via a key is housed in the locking piece 13C.
G and the transmission lever 14 are integrated via a gripping force retaining coil spring 15.

That is, as shown in FIG. 5, a connecting rod 16 is attached to the distal end of the transmission lever 14 so as to protrude toward the fixed claw side, and the distal end of the connecting rod 16 and the locking piece 1
A coil spring 15 is interposed between the tip end of the locking member 3C and the transmitting lever 14, and the locking piece 13G is pressed against the transmission lever 14. The locking piece 13C and the transmission lever 14 each have a stopper 19, 20, which prevents the locking piece 13C from swinging toward the transmission lever 14 and integrates them. Furthermore, the locking piece 13C can swing in the opposite direction to the transmission lever 14 against the spring force of the coil spring 15.

It is preferable that the pair of claws 13 having such a configuration be arranged such that the fixed claws 13A are alternately positioned, as shown in FIG.

In the above configuration, the operation is as follows.

(i> With the horizontal suspension beam 8 hoisted up, the carriage 5 is driven to a predetermined position on the casting machine.

(ii) The pair of pawls 13 is opened by closing the pair of drive levers 12 by the modele cylinder 11, lowering the horizontal suspension beam 8, and the pair of pawls 13 are erected with a predetermined accuracy. Stop lowering when it reaches the upper end.

(iii) If the modele cylinder 11 is operated in the claw closing direction in this state, all the pairs of claws 13 will be closed simultaneously via the claw drive shaft 9, and a large number of billets) B will be gripped by the pairs of claws 13 at the same time. It will be done.

Here, the large number of billets B lined up in the - row have nominally the same size, but there are variations in diameter size within a certain tolerance. Furthermore, the moder cylinder 11. The difference in gripping force between the claw 13 closest to the drive lever 2 and the claw 13 furthest from the drive lever 2 becomes very large due to the torsional rigidity of the claw drive shaft 9.

If there is a large variation in diameter or a large difference in bending force, some billets may be impossible to grip, but in the present invention, the rotary type 13B is used.

Locking piece 13C, transmission lever 14. The coil spring 15 absorbs the billet diameter difference and torsion angle difference described above, eliminates gripping failures, and makes the gripping force almost uniform.

That is, as shown in FIG. 10, when the pair of pawls 13 are closed, the rotary die 13B swings together with the transmission lever 14 due to the pressing force of the coil spring 15, and the pawl 13 comes into contact with the billet B, and this state When further closed, the coil spring 15
The rotary mold 13B separates from the transmission lever 14 against the spring force. This displacement of the rotary mold 13B causes variations in diameter dimensions.

The torsion angle difference is absorbed.

(iv) When Ia is completed, the horizontal hanging beam 8 is hoisted up and conveyed to the tilting table 2.

(v) Tilt the billet B by lowering the horizontal hanging beam 8, etc.

(vl) When the billet B is in a horizontal state, by opening the pair of claws using the mold cylinder 11, the hanging tool can be released from the billet B.

Although the above description has been made regarding aluminum billets from an aluminum foundry, it goes without saying that the present invention can also be applied to other elongated materials.

〔Effect of the invention〕

As mentioned above, the automatic long material hanger according to the present invention has a pair of claw drive shafts provided with a large number of pairs of gripping claws, and opens and closes the large number of grasping claws simultaneously by rotating the claw drive shaft using an actuator and a drive lever. This makes it possible to hang many long materials simultaneously and automatically, eliminating the need for slinging and unslinging as required in the past. It saves labor, saves manpower, and improves transportation efficiency without requiring any operating skills.

In addition, if one of the pair of gripping claws is rotatably attached to the claw drive shaft and can be pressed against the long material by a spring, variations in the diameter of the long material and differences in the torsion angle of the claw drive shaft can be absorbed. , it is possible to eliminate grasping and dropping, and it is also possible to make the grasping forces of the large number of grasping claws approximately equal.

[Brief explanation of the drawing]

FIG. 1 is a front view showing one embodiment of the present invention, and FIGS. 2, 3, and 4 are lines ■ and ■ in FIG. 1. ■ Line sectional view, Figure 5 is a partially enlarged view of Figure 1, Figures 6 and 7 are VI-VI line in Figure 5, ■-■ line sectional view, Figures 8 and 9 are Figure 6 shows the ■ line and ■ line cross-sectional view, and Figure 10 shows the 5th line.
Figures 11, 12 and 13 are a plan view, side view and front view of aluminum casting equipment, and Figure 14 is an overall view of conventional equipment. FIG. 15 is a sectional view showing a conventional simple hanging jig. 1. Aluminum casting machine, 2. Tilting table, 3. Equipment mount, 4. Traveling device, 5. Traveling trolley, 6. Hoisting device, 6A. Winch, 6B. Idle sheave. 6C...
Sheave case, 7. Mounting bin, 8. Horizontal suspension beam, 9. Claw drive shaft, 10. Support bracket, 11.
Mordle cylinder, 12... Drive lever 13... Claw,
13Δ... Fixed claw, 13B... Rotating claw, 13C... Locking piece, 14... Transmission lever 15... Coil spring, 16...
・Connecting rod, 17° 18...Splash receiver, 19.20.2
1. Stopper.

Claims (2)

[Claims] (1) Connect the ends of many long materials to a horizontal hanging beam,
In a lifting device that simultaneously conveys a large number of long materials, a pair of claw drive shafts are arranged along the longitudinal direction of the horizontal suspension beam, and the base ends of a pair of drive levers that are opened and closed by an actuator are connected to the pair of claws. The length is fixed to each of the drive shafts, and the pair of gripping claws are arranged in large number at intervals in the axial direction of the claw drive shaft, and are attached to each of the pair of claw drive shafts. Automatic length hanging device. (2) Fix one of the pair of gripping claws to one of the claw drive shafts,
Claim characterized in that the other gripping pawl is rotatably attached to the other pawl drive shaft, a transmission lever is fixed, and the rotational gripping pawl is connected to the transmission lever via a spring capable of pressing the rotational gripping pawl in a closing direction. (1) Automatic hanging device for long materials described in (1).