JP2537557B2 - Long material automatic suspender - Google Patents

Description

Description: [Industrial field of application] The present invention relates to an automatic long material suspender used for transporting and tilting an aluminum billet in an aluminum casting factory.

[Prior art]

In an aluminum casting plant, it is necessary to transfer aluminum billets cast by an aluminum casting machine to a tilt table in front of a soaking furnace, but it is possible to transfer many aluminum billets at the same time for reasons such as improved productivity. Has been done.

Conventionally, as shown in Fig. 14, an overhead crane
On the hook 52 of the hoisting device installed on the traveling carriage 51 of 50,
The horizontal suspension beam 53 was suspended, and a large number of simple suspension jigs 54 for suspending one suspension were suspended on the horizontal suspension beam 53 via a U-link for suspension. As shown in FIG. 15, for example, the hanging jig 54 is provided with a lifting pin insertion hole 55 at the center of the upper part of a hanging jig main body 54A made of a mold frame, and is slidable on one side of the lower part. A gripping head 54C provided with a gripping pad 54B, which can be moved forward and backward by a tightening screw 56 and is rotatably supported via a ball 57 on the other side.
Is provided, and when the hanging jig 54 is hoisted in the direction of arrow A, the billet B is clamped by the grip of the gripping head 54C by utilizing its own weight.

[Problems to be Solved by the Invention]

However, with the above-described simple lifting tool, it is necessary to perform the screw tightening work for clamping the billet and the screw loosening work for unclamping the billet for each one, which requires a lot of time and manpower and is very inefficient work. Was there.

Further, since each of the simple hanging jigs is hung so as to move independently (swing), the crane operator is required to have an advanced operation technique for centering the hanging jig before slinging.

The present invention has been made in view of such circumstances, and an object thereof is to be able to simultaneously and automatically suspend a large number of long-sized materials such as cast aluminum billets, thereby saving labor and manpower. The purpose is to provide an automatic long material hanging device that can improve the transportation efficiency.

[Means for solving the problem]

As shown in FIGS. 1 to 4, the long material automatic hoisting tool according to the present invention has a pair of pawl drive shafts 9 arranged on a horizontal hoisting beam 8 along the beam longitudinal direction, and a motor cylinder 11 and the like. The base ends of a pair of drive levers 12 that are opened and closed by the actuators are fixed to the pair of claw drive shafts 9, respectively, and a large number of a pair of grip claws 13 are arranged at intervals in the axial direction of the claw drive shaft 9. As shown in FIGS. 6 to 9, the pair of gripping claws 13 fix one gripping claw 13A to one claw drive shaft 9 and rotate the other gripping claw 13B to the other claw drive shaft 9. A spring 1 that can be attached to and fixed to the transmission lever 14 to press the rotary grip claw 13B and the transmission lever 14 in the closing direction.
The rotation gripping claw 13B is integrated with the transmission lever 14 via 5.

Furthermore, this long material automatic hoisting tool is used for the horizontal hoisting beam 8
A pair of claw drive shafts 9 are arranged along the beam longitudinal direction,
The base ends of a pair of drive levers 12 that are opened and closed by an actuator such as a motor cylinder 11 are fixed to the pair of pawl drive shafts 9, respectively, and a pair of gripping pawls 13 are spaced in the axial direction of the pawl drive shaft 9. A large number of paired gripping claws 13
One of the gripping claws is fixed to one claw drive shaft 9 to form a fixed claw 13A, and the other gripping claw is rotatably attached to the other claw drive shaft 9 to form a rotary claw 13B and the transmission lever 14 A spring 15 for fixing the rotary claw 13B to the transmission lever 14 in the direction in which the rotary claw 13B is closed is provided.
The transmission lever 14 and the transmission lever 14 are linked so as to allow the transmission lever 14 to separate from the rotation claw-side member 13C against the spring force after the rotation claw 13B comes into contact with the suspended material together with the fixed claw 13A. It is characterized by

[Work]

When the actuator is actuated to open the pair of drive levers 12, the pair of pawl drive shafts 9 rotate in mutually opposite directions, and all the pair of pawls 13 swing in the closing direction, so that the end portions of a large number of long members are moved. The long materials are automatically hung by simultaneously grasping.

At the time of this grip, the diameter of the long material varies and the claw drive shaft 9
Even if there is a difference in torsion angle, it can be absorbed by the rotation claw 13B being displaced with respect to the transmission lever 14 against the spring 15.

〔Example〕

Hereinafter, the present invention will be described based on an illustrated embodiment.

This is an example applied when a large number of aluminum billets B cast by the aluminum casting machine 1 in the aluminum casting factory as shown in FIGS. 11 to 13 are simultaneously conveyed to the tilting table 2 in front of the soaking furnace. A traveling carriage 5 that reciprocates by the traveling device 4 is provided on the device base 3, a hoisting device 6 is installed on the traveling carriage 5, and two winches 6A of the hoisting device 6 are installed at intervals. To do.

As shown in FIG. 1, the winch 6A has a floating sheave 6B, and the sheave case 6C of the sheave 6B has a horizontal suspension beam 8 extending through a mounting pin 7 in a direction orthogonal to the traveling direction of the carriage. Also, mount it so that it swings in the traveling direction of the carriage.

The pawl drive shafts 9 are rotatably attached to both sides of the horizontal suspension beam 8 through a large number of support brackets 10 so that they can be rotated in opposite directions by a motor cylinder 11 and a pair of drive levers 12. This motor cylinder 11
As shown in FIG. 1, the drive lever 12 and the drive lever 12 are arranged in a pair in the axial direction of the pawl drive shaft 9 with a space therebetween. As shown in FIG. Fixed at 9,
One tip is pinned to the base of the motor cylinder 11, the other tip is pinned to the tip of the piston shaft, and the motor cylinder 11 is expanded and contracted to open and close the pair of drive levers 12, and the pair of drive levers shown in FIG. The pawl 13 is shown swinging open and closed. The base of the drive lever 12 is a stopper for setting the open position of the pair of claws 13 as shown in FIG.
21 are installed.

As shown in FIG. 1, the pair of claws 13 are provided on the both sides of the horizontal suspension beam 8 at a number of seven, respectively.
As shown in FIGS. 1 to 9, one pawl is a fixed pawl 13A fixed to the pawl drive shaft 9 via a key, and the other pawl is a rotary pawl 13B rotatably attached to the pawl drive shaft 9.

The rotary claw 13B includes a claw portion similar to the fixed claw 13A and a frame-shaped locking piece 13C that rises up integrally 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, and the locking piece 13C and the transmission lever 14 are integrated via a gripping force holding coil spring 15. It

That is, as shown in FIG. 5, a connecting rod 16 is attached to the tip of the transmission lever 14 so as to project toward the fixed claw side, and a space between the tip of the connecting rod 16 and the tip of the locking piece 13C is provided. The coil spring 15 is interposed via the spring supports 17 and 18, and the locking piece 13C is pressed against the transmission lever 14. The locking piece 13C and the transmission lever 14 have stoppers 19 and 20, respectively, which prevent the locking piece 13C from swinging toward the transmission lever 14 side and are integrated. In addition, the transmission lever 14
Even when the locking piece 13C hits the billet and stops while rotating toward the gripping side, it can rotate and swing in the gripping direction against the spring force of the coil spring 15.

The pair of claws 13 having such a configuration are preferably arranged so that the fixed claws 13A are alternately located as shown in FIG.

 The above-described structure operates as follows.

(I) The traveling carriage 5 is caused to travel to a predetermined position on the casting machine while the horizontal suspension beam 8 is wound up.

(Ii) The pair of pawls 13 is opened by closing the pair of drive levers 12 by the motor cylinder 11, the horizontal suspension beam 8 is lowered, and the upper end of the billet B in which the pair of pawls 13 are stood with a predetermined accuracy. When it is located at, stop lowering.

(Iii) If the motor cylinder 11 is operated in the claw closing direction in this state, all the pair of claws 13 are simultaneously closed via the claw drive shaft 9, and a large number of billets B are simultaneously gripped by the pair of claws 13.

Here, a large number of billets B arranged in a line have nominally the same dimensions, but there are variations in diameter dimensions within a certain tolerance. Further, between the claw 13 closest to the motor cylinder 11 and the drive lever 12 and the claw 13 farthest from the motor cylinder 11, the gripping force difference becomes very large due to the torsional rigidity of the claw drive shaft 9.

When such a variation in the diameter dimension and the gripping force difference are large, a billet that cannot be gripped is generated, but in the present invention, the billet diameter difference described above is generated by the rotating claw 13B, the locking piece 13C, the transmission lever 14, and the coil spring 15. ， It is possible to absorb the difference in twist angle and eliminate the grip, and to make the grip force almost even.

That is, as shown in FIG. 10, when the pair of claws 13 is closed, the rotary claw 13B swings integrally with the transmission lever 14 due to the pressing force of the coil spring 15, and both the rotary claw 13B and the fixed claw 13A are billet B. When the rotary claw 13B comes into contact with the billet B and stops rotating,
Only the transmission lever 14 rotates to the grip side against the spring force of the coil spring 15. The fixed claw 13A rotates to the grip side by a predetermined amount.
Due to the displacement of the rotary claw 13B, variations in diameter and differences in torsion angle are absorbed.

(Iv) When the grip is completed, the horizontal suspension beam 8 is rolled up and conveyed to the tilting table 2.

(V) The billet B is tilted by, for example, lowering the horizontal suspension beam 8.

(Vi) When the billet B is in the horizontal state, the lifting device can be released from the billet B by opening the pair of pawls by the motor cylinder 11.

In the above, the aluminum billet in the aluminum casting factory has been described, but it goes without saying that the present invention can be applied to other long materials.

〔The invention's effect〕

As described above, the long material automatic suspender according to the present invention is
Since a pair of gripping pawls are provided on the pair of pawl drive shafts and the pawl drive shaft is rotated by the actuator and the drive lever to open and close a large number of gripper pawls at the same time, a large number of long materials can be automatically and simultaneously. It can be hung and eliminates slinging and removing work as in the past.
A large number of gripping claws do not move with respect to each other, so that advanced driving technology is not required, and labor and manpower can be saved, and transport efficiency can be improved.

Further, one of the pair of gripping claws is fixed to one claw driving shaft, the other gripping claw is rotatably attached to the other claw driving shaft, and the transmission lever is fixed to the rotary claw and the transmission lever. Since the rotating gripping claw is integrated with the transmission lever via a spring that can be pressed in the direction of closing, it is possible to absorb variations in the diameter dimension of the long material and the twist angle difference of the claw drive shaft, and to eliminate gripping. In addition, the gripping force of a large number of gripping claws can be made substantially equal.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIGS. 2, 3, and 4 are sectional views taken along the lines II, III, IV of FIG.
Figure is a partially enlarged view of Figure 1, and Figures 6 and 7 are VIs of Figure 5.
-VI line, VII-VII line sectional view, FIGS. 8 and 9 are V of FIG.
III and IX sectional views, FIG. 10 is a front view showing the operating conditions of FIG. 5 in order, and FIGS. 11, 12, and 13 are plan views, side views, and front views showing aluminum casting equipment. FIG. 14 is an overall view showing conventional equipment, and FIG. 15 is a sectional view showing a conventional simple hanging jig. 1 ... Aluminum casting machine, 2 ... Tilt table, 3 ... Device stand, 4 ... Traveling device, 5 ... Traveling vehicle, 6 ... Hoisting device, 6A ... Winch, 6B ... Floating sheave, 6C ... sheave case, 7 ... mounting pin, 8 ... horizontal suspension beam, 9 ...
… Pawl drive shaft, 10 …… Support bracket, 11 …… Motor cylinder, 12 …… Drive lever, 13 …… Pawl, 13A …… Fixed pawl, 13B …… Rotating pawl, 13C …… Locking piece, 14 …… Transmission lever, 15 …… Coil spring, 16 …… Connecting rod, 17 ……, 18
...... Spring holder, 19,20,21 …… Stopper.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Sakuichi Inoue, Niihama, Niihama, Ehime Prefecture, No. 5-2 Niihama Works (56) References: 51-154880 (JP, U) Actual public Sho 53-54031 (JP, Y2) Actual public Hei 2-43674 (JP, Y2)

Claims (2)

(57) [Claims] 1. A suspending tool for connecting a number of long members to a horizontal suspension beam and simultaneously transporting a plurality of long members, wherein a pair of pawl drive shafts are provided on the horizontal suspension beam in the beam longitudinal direction. The base ends of a pair of drive levers that are opened and closed by an actuator are fixed to the pair of pawl drive shafts, respectively, and a large number of a pair of gripping pawls are arranged at intervals in the axial direction of the pawl drive shaft. , One of a pair of gripping pawls is fixed to one pawl drive shaft, the other gripping pawl is rotatably attached to the other pawl drive shaft, and a transmission lever is fixed, and the rotary gripping pawl and the transmission lever are closed to each other. An automatic long material suspender, characterized in that the rotary gripping claw is integrated with a transmission lever via a spring that can be pressed in a matching direction. 2. A suspender for connecting a number of long members to a horizontal suspension beam and simultaneously transporting a plurality of long members, wherein a pair of pawl drive shafts are provided on the horizontal suspension beam in the beam longitudinal direction. The base ends of a pair of drive levers that are opened and closed by an actuator are fixed to the pair of pawl drive shafts, respectively, and a large number of a pair of gripping pawls are arranged at intervals in the axial direction of the pawl drive shaft. , One of the pair of gripping claws is fixed to one claw drive shaft to form a fixed claw (13A), and the other claw drive shaft is rotatably attached to the other claw to rotate the claw (13B). In addition to fixing the transmission lever, the transmission lever is provided with a spring that biases the rotary claw side member (13C) in the direction in which the rotary claw closes, and the rotary claw and the transmission lever are suspended together with the fixed claw. After contacting the material, the transmission lever resists the spring force and rotates the side of the pawl. An automatic long material suspender characterized by being linked so as to allow it to be separated from the material.