JPH06114542A - Device for conveying ladle - Google Patents

Abstract

PURPOSE:To provide a ladle conveying device capable of safely conveying a ladle. CONSTITUTION:A self-running type conveying carriage 22 having a pair of columns 29 is provided to be freely movable along one pair of trucks 20, 21 laid on the ground and a ceiling. A first lifting member 36 and a second lifting member 37 are provided to be freely liftable along a rail provided in a pair of the columns 29 and long in the vertical direction. A hanger device 55 for handing the ladle is fitted to the tip part of a hanger arm 52 rocked with the part connecting to the second lifting member 37 as center by vertically moving the second lifting member 37 against the first lifting member 36. A hook 59 of this hanger device 55 is engaged with a hanging ring 67 of a ladle A, and by vertically moving the first lifting member 36 and the second lifting member 37 against the first lifting member 36, the ladle A is moved to the up-and-down and the back-and-forth directions and placed on a receiving table 68 provided on the conveying carriage 22, and the ladle A is conveyed by shifting the conveying carriage 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladle carrier device for carrying a ladle for casting.

[0002]

2. Description of the Related Art Generally, a mold which is continuously formed by a molding machine is intermittently conveyed in one direction by a mold conveying device and is poured into the mold by a pouring device provided on one side of the conveying path. In the casting facility, the hot water discharged from the melting furnace such as a high frequency induction electric furnace is received by a ladle, the ladle is transported to the position of the pouring device, and then the ladle is set on the pedestal of the pouring device. Then, the ladle is tilted by the rotation around the horizontal axis of the pedestal so that the hot water is poured into the mold.

In the transportation of the ladle, conventionally, a rail is laid on the ceiling of a molding building, and the ladle is suspended and supported by a hoist movable along the rail, and the hoist travels along the rail. I am trying to let you.

[0004]

By the way, in a ladle carrier using a hoist, since an extremely heavy ladle weighing several hundred kg is carried in a suspended state, the hanging wire is often cut. It was extremely dangerous because the ladle fell when the wire was cut.

When the hoist is moved by operating a pendant switch that hangs down from the hoist, an electric cord connecting the switch and the drive part of the hoist often comes into contact with a ladle having an extremely high temperature. The code was melted and many troubles occurred.

[0006] Generally, when casting ductile cast iron, while the ladle removed from the pouring device is being conveyed to the melting furnace, the residual hot water in the ladle was discharged and magnesium was added to the bottom of the ladle. After that, the molten iron is poured into the ladle to make the graphite spherical.

For this reason, in the conventional transporting apparatus for transporting the ladle in a suspended state by the hoist, there is a problem that it takes much time to discharge the residual hot water in the ladle.

The present invention solves the above-mentioned conventional problems,
The first technical issue is to enable the ladle to be transported very safely, and the second technical issue is to facilitate the discharge of the residual hot water in the ladle.

[0009]

In order to solve the first problem, in the first invention, a track laid on the ground and a pair of movably supported along the track provided on the upper surface. Self-propelled transporting carriage having vertically extending rails on the column, first elevating member and second elevating member provided so as to be vertically movable along the column rail,
A first lifting device for moving the lifting member up and down, a second lifting device for lifting a second lifting member provided between the first lifting member and the second lifting member, and a second lifting device for the first lifting member. A hanger arm that rotates around a connecting portion to the second elevating member by relative movement of the members, and a hook that is attached to the tip of the hanger arm and is tiltable with respect to a suspension ring provided on the ladle. A hanger device having a lower part,
Since a structure is adopted, which comprises a ladle supporting pedestal having a pair of receiving members provided on the transfer carriage and capable of supporting the arm members provided on both sides of the ladle in a non-rotating state, is there.

In order to solve the second problem, the second
In the invention, the structure in which the pedestal in the first invention is tiltably supported and the tilting device for tilting the pedestal is provided is adopted.

[0011]

In the ladle carrier device according to the first aspect of the invention, the hot water discharged from the melting furnace or the holding furnace is received by the ladle while the ladle is supported by the hanger device. Upon receiving a fixed amount of hot water, a ladle is placed on the pedestal, the carrier is transported along the track to the position of the pouring device, and the ladle is transferred between the carrier and the pouring device. . At the time of delivery, the hook of the hanger device is engaged with the suspension ring of the ladle, the ladle is raised by the elevation of the first elevating member, and the hanger arm is shaken by the elevation of the second elevating member with respect to the first elevating member. After moving the ladle onto the pouring device, the ladle is placed on the pouring device by lowering the first elevating member.

In the ladle carrying device according to the second invention, the ladle after pouring is delivered between the pouring device and the receiving stand, and the ladle is directed to the melting furnace by the movement of the carrying carriage. The transport carriage is temporarily stopped during
Tilt the ladle together with the cradle to discharge the residual hot water in the ladle.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows the layout of the casting equipment. The high frequency induction furnace 1 and the low frequency holding furnace 2 are provided close to each other,
The hot water discharged from the high frequency induction furnace 1 is received by the low frequency holding furnace 2. A pouring device 4 for pouring hot water into the mold 3 is provided on one side of a transfer path of the mold 3 which is intermittently transferred in one direction by the mold conveying device.

As shown in FIG. 2, the low frequency holding furnace 2 is swingably supported about a shaft 5 and is swung about the shaft 5 by the operation of a cylinder (not shown). Due to the swing, the hot water inside is discharged from the spout 6.

On the other hand, the pouring device 4 is, as shown in FIG.
A table lifter 9 is provided on a self-propelled carriage 8 which is movably supported along a rail 7 on the ground, and a support stand 11 is provided on an elevating table 10 of the table lifter 9. It is a well-known conventional one in which the ladle A supported by the receiving tool 11a of the support 11 is tilted to pour hot water into the mold 3 by swinging around the shaft 13 by operation. 11 is 2 on the lifting table 10
One is provided.

In the above casting equipment, a ladle carrying device for carrying the ladle A between the low frequency holding furnace 2 and the pouring device 4 will be described as an example.

As shown in FIGS. 4 and 5, a pair of tracks 20 and 21 are laid on the ground and the ceiling. These tracks 20 and 21 are one of the low-frequency holding furnace 2 as shown in FIG. It has a straight line portion a extending along the side and a straight line portion b extending along one side of the pouring device 4, and has an L-shape with a curved line portion c provided between the straight line portions a and b.

On the track 20 on the ground, a pair of wheels 23a and 23b provided on the lower portion of the carrier truck 22 are mounted, and one wheel 23a is rotationally driven by a motor 24.

FIG. 11 shows the support portion of the wheel 23a driven by the motor 24. A support frame 25 that rotatably supports the wheels 23 a is fixed to a support plate 26 that supports the motor 24, and a support shaft 27 provided on the support frame 25 penetrates the support plate 26 and projects onto the support plate 26. An upper portion of the support shaft 27 is rotatably supported by a bearing 28 attached to the carrier truck 22.

The other wheel 23b is connected to the one wheel 2
Similar to 3a, it is rotatably supported by a support frame, and a support shaft provided on the support frame is rotatably supported by bearings attached to the carriage 22.

A pair of columns 29 are provided on the carrier truck 22.
Beam member 3 provided between the upper parts of the columns 29
A pair of brackets 31 are attached to both ends of 0. As shown in FIG. 12, the bracket 31 has a bearing 32 at its tip end, and the bearing 32 rotatably supports a support shaft 34 attached to the lower surface of the roller support plate 33. A pair of rollers 35 are rotatably supported on the roller support plate 33, and the pair of rollers 35 contact both side surfaces of the ceiling track 21.

As described above, the wheels 23a, 23b mounted on the track 20 on the ground and the pair of rollers 35 brought into contact with the track 21 on the ceiling are rotatably supported about the support shafts 27, 34. , The wheels 23a and 23b, and the roller 35 respectively include a ground track 20 and a ceiling track 2
When moving along the curved portion b of 1, the direction is smoothly changed along the curved portion b, and even if the curvature of the curved portion b is small, the direction is changed smoothly.

In the case of the embodiment, the movement of the carrier truck 22 is guided by the track 20 on the ground and the track 21 on the ceiling, but two tracks are provided on the ground, and the carrier 22 is carried along the tracks. May be moved.

As shown in FIGS. 5 and 6, a first elevating member 36 and a second elevating member 37 are vertically provided between the pair of columns 29. A plurality of vertically long rails 38 are attached to the inner surface of the column 29, while the lifting member 3
A plurality of guide rollers 39 guided by the rails 38 are rotatably supported on both sides of 6, 37. Therefore, each of the elevating members 36 and 37 smoothly moves up and down along the rail 38.

The first elevating member 36 is moved up and down by the drive of the first elevating device 40, while the second elevating member 37 is moved up and down relatively by the drive of the second elevating device 41. Be moved.

The first elevating member 40 has a pair of connecting plates 42 arranged vertically between a pair of columns 29, and bearings 43 attached to the connecting plates 42 rotatably support the upper and lower ends of the screw shaft 44. A nut 45 screw-engaged with the screw shaft 44 is attached to the first elevating member 36, and the screw shaft 44 is rotated by a motor 46 to vertically move the first elevating member 36.

The second lifting device 41 rotatably supports the upper end portion of the screw shaft 47 by the first lifting member 36, and the nut 48 screw-engaged with the screw shaft 47 is used as the second lifting member 37.
The screw shaft 47 is rotated by the motor 49 supported by the first elevating member 36 to move the second elevating member 37 up and down with respect to the first elevating member 36.

As shown in FIG. 7, a pair of supporting pieces 50 are attached to both inner surfaces of the second elevating member 37, and the rear ends of the hanger arms 52 on both sides of the hanger frame 51 are attached to the supporting pieces 50. Is swingably connected via. The middle of the hanger arm 52 and the first elevating member 36 are connected via a pair of links 54. Therefore, when the second elevating member 37 moves up and down with respect to the first elevating member 36, the hanger frame 51 swings around the shaft 53.

A hanger device 55 for suspending a ladle is provided at each tip of the pair of hanger arms 52. As shown in FIG. 8, the hanger device 55 rotatably connects the upper portion of the hook support body 56 to the tip of the hanger arm 52 with a pin 57, and connects it to a forked piece 58 provided at the lower portion of the hook support body 56. Hook 59 and hook portion 6 of the hook 59
The upper part of the opening / closing member 61 for opening / closing 0 is rotatably connected by a pin 62, and the hook 59 and the opening / closing member 61 are opened / closed around the pin 62 by cylinders 63, 64 connected to the hook support 56. ing.

Here, the ladle A suspended and supported by the hanger device 55 has a pair of arm members 65 on both sides, as shown in FIG. 13, and a lower end portion fixed to the arm members 65. A pair of hanging wheels 6 is provided on the upper side of the V-shaped hanging frame 66.
7 is provided.

A pedestal 68 for supporting a ladle is provided on the carrier cart 22. 9 and 10 show details of the pedestal 68. The cradle 68 has a pair of hollow side frames 69 whose lower surface is open. The side frames 69 are connected by a support plate 70 and stays 71, and the arm members 65 of the ladle A are attached to the upper surfaces of the side frames 69. The structure is such that a receiving member 72 that can be supported in a rotation-stopped state is fixed.

The pair of side frames 69 are fitted to the outer sides of the pair of support frames 73 fixed to the upper surface of the transport carriage 22, and the front ends of the support frames 73 are provided in front of each side frame 69 via a shaft 74. The parts are swingably connected. This pedestal 68 is provided on each side frame 6
A cylinder 75 provided between the shaft 9 and the support frame 73 is actuated to swing around the shaft 74.

In the carrying device having the above-described structure, the hook 59 of the hanger device 55 is engaged with the suspension wheel 67 of the ladle A, and in the engaged state, the first elevating member 36 is operated by the operation of the first elevating device 40. Since the first elevating member 36 and the second elevating member 37 for raising or lowering are connected to each other via the second elevating device 41, the second elevating member 37 is
Ascending or descending together with the elevating member 36, the hanger device 55
The ladle A suspended and supported by can be moved up and down.

When the ladle A is suspended, the second
When the second elevating member 37 is moved up and down with respect to the first elevating member 36 by the operation of the elevating device 41, the hanger frame 51 swings around the connecting portion of the second elevating member 37 to convey the ladle A. The ladle A can be moved in a direction intersecting the moving direction of the carriage 22.

When the hot water discharged from the holding furnace 2 is tilted by the tilting of the low-frequency holding furnace 2, the arm member 65 of the ladle A is supported by the holder 72 of the holder 68, and the holder 68 is used. While being supported by the pan A, the carrier truck 22 is moved along the tracks 20, 2
It is self-propelled to the position of the low frequency holding furnace 2 along 1. Then, at the position of the low-frequency holding furnace 2, the carrier truck 22 is stopped, the hook 59 of the hanger device 55 is swung by the operation of the cylinder 63, and the hook 59 engages with the hanging wheel 67 of the ladle A. Raise the first elevating member 36,
The hot water discharged from the holding furnace 2 is received by the ladle A in a suspended state in which the ladle A is lifted from the pedestal 68.

In this case, the amount of hot water is measured by a measuring device (not shown) such as a load cell for detecting the weight of the ladle A,
When the preset hot water is received by the ladle A, the first elevating member 36 descends to descend the ladle A, and the arm member 65 is supported by the receiving member 72.

After receiving the hot water, the ladle A is transported to the position of the pouring device 4 by the movement of the transport carriage 22, and the ladle A is transferred between the pouring device 4 and the receiving base 68.

When delivering the ladle A, the hook 59 of the hanger device 55 is engaged with the suspension ring 67 of the ladle A to
By raising the elevating member 36, the ladle A is pulled up onto the pedestal 68, raising the ladle A to a predetermined height, and then raising the second elevating member 37 relative to the first elevating member 36 to raise the shaft 53.
The ladle A is conveyed to the pouring device 4 by rocking the hanger frame 51 around the center, and after the ladle A is conveyed to the support 11 of the pouring device 4, the first elevating member 36 is lowered. Let ladle A
When the receiving member 72 is supported by the arm member 65, the hook 59 and the opening / closing member 61 of the hanger device 55 are moved to the cylinder 6
The hook 59 and the suspension ring 6 are released by the operation of 3, 64.
Release the engagement of 7.

Ladle A after pouring supported by pouring device 4
Is transported to the position of the low frequency holding furnace 2 in a state where the ladle A is supported by the receiving base 68 by the reverse operation to the above.

Here, when casting the ductile cast iron, it is necessary to empty the ladle A, put magnesium in the ladle A, and supply hot water onto the ladle A, which is supported by the pedestal 68 of the carriage 22. If hot water remains in the ladle A, it is necessary to discharge the residual hot water in the ladle A while the ladle A is being conveyed to the position of the low-frequency holding furnace 2.

When the residual hot water is discharged, the pedestal 68 is rotated around the shaft 74 by the operation of the cylinder 75, the ladle A on the pedestal 68 is tilted, and the residual hot water inside flows out from the spout. Let

[0043]

As described above, in the ladle carrier device according to the present invention, the ladle is supported by the pedestal on the carrier truck, and the ladle is carried by the movement of the carrier truck along the track. Therefore, the ladle can be transported very safely.

Further, by vertically moving the first elevating member supported so as to be vertically movable along the rails of the column, the hanger device for hanging the ladle supported at the tip of the hanger arm is vertically moved. Since the hanger device can be moved in the horizontal direction by vertically moving the second elevating member with respect to the first elevating member, the ladle can be safely transferred between the pedestal of the carrier device and the pouring device. can do.

In the ladle carrying device according to the second aspect, since the pedestal on the carrying carriage can be tilted,
The remaining hot water in the ladle supported by the cradle can be safely discharged.

In the ladle carrier device according to the third aspect of the present invention, since the movement of the carrier car is guided by a pair of tracks provided on the ground and the ceiling, the transfer between the pedestal of the carrier car and the pouring device is performed. It is possible to reliably prevent the carrier cart from falling when delivering the pan, and to safely deliver the ladle.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of a layout of casting equipment.

FIG. 2 is a schematic view of a low frequency holding furnace portion of the above.

FIG. 3 is a schematic view of the pouring device portion of the above.

FIG. 4 is a front view of a ladle carrier device according to the present invention.

FIG. 5 is a vertical side view of the above.

6 is a sectional view taken along line VI-VI in FIG.

FIG. 7 is a perspective view showing a moving mechanism of the same hanger device.

FIG. 8 is a vertical sectional side view of the same hanger device.

FIG. 9 is a partially cutaway side view of the above-described pedestal.

10 is a vertical front view of FIG.

FIG. 11 is a cross-sectional view of the wheel support portion of the above.

FIG. 12 is a cross-sectional view of the roller support portion of the above.

[Figure 13] Front view of ladle

[Explanation of symbols]

 20, 21 Tracks 22 Transport dolly 29 Column 36 First elevating member 37 Second elevating member 40 First elevating device 41 Second elevating device 52 Hanger arm 55 Hanger device 59 Hook 68 Cradle 72 Catch 75 Cylinder

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location B66C 23/50 7309-3F

Claims (3)

[Claims] 1. A track laid on the ground, and a self-propelled carriage that is movably supported along the track and has a pair of columns provided on its upper surface with rails extending in the vertical direction.
A first unit that can be moved up and down along the rails of the column
An elevating member and a second elevating member, a first elevating device for vertically moving the first elevating member, and a second elevating member for elevating a second elevating member provided between the first elevating member and the second elevating member. The device, a hanger arm that rotates around a connecting portion for the second elevating member by relative movement of the second elevating member with respect to the first elevating member, and a hanger arm that is attached to the tip of the hanger arm and is provided on a ladle. Hanger device having a hook that can be tilted and detached with respect to the hanging wheel, and a pair of receivers that are provided on the carrier and that can support arm members provided on both sides of the ladle in a non-rotating state. Ladle transporting device comprising a ladle supporting table having an upper part. 2. The ladle carrying device according to claim 1, wherein the ladle carrying device is provided with a tilting device that tiltably supports the cradle and tilts the cradle. 3. The ladle carrier according to claim 1 or 2, wherein a single track on which a carrier is provided on the ground,
A ladle carrier that is movable along a single track on the ceiling.