JP2001334359A - Vehicle for transporting ladle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle for transporting a ladle with which the upper inclination of the ladle can automatically be stopped in the case of mistaking the operation by an operator. SOLUTION: In a load-carrying platform 12, an outrigger 13, a supporting frame body 30 for supporting the ladle 40 and a molten metal supplying means 60 for supplying the molten metal into the side part, are arranged. The supporting frame body 30 is arranged so as to be possible to vertically turn and provided with a turning means 39. The molten metal supplying means 60 is constituted so as to be extended/shrunk in the lateral direction, and a molten metal receiving part 61 for receiving the molten metal from the ladle 40 turned upward integrally with the supporting frame body 30 is arranged. A cover body 31 is arranged so as to freely open/close the molten metal receiving part 61. After grounding the outrigger 13, opening the cover body 71 and extending the molten metal supplying means 60, the turning means 39 is constituted so as to be movable, and when at least one in the movements is not yet completed, the turning means 39 is not acted in the interlock state and the unexpected action caused by the operating mistake can automatically be stopped.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ladle transporting vehicle used for transporting a ladle containing a high-temperature (for example, about 750.degree. C.) molten metal such as steel or aluminum. is there.

[0002]

2. Description of the Related Art Conventionally, as a ladle transport vehicle of this kind,
The supporting frame is rotatably provided on the carrier, and the ladle is supported by the supporting frame. Then, the ladle transport vehicle is stopped at a target location, the outrigger lands, and the melt supply means is set, and the ladle is rotated upward together with the support frame to incline the molten metal. Was transferred to a melting supply means via a hot water outlet, and was supplied to a melting furnace or the like.

[0003]

In the above-mentioned conventional structure, when the ladle is tilted upward in a state where the outrigger has not landed or the melt supply means has not been set due to an operation error of the operator, the molten metal supply is performed. Cannot be performed reliably and smoothly.

Accordingly, an object of the present invention is to provide a ladle transport vehicle that can automatically prevent the ladle from tilting upward when an operator makes an operation error.

[0005]

According to a first aspect of the present invention, there is provided a ladle-carrying vehicle according to the present invention, wherein an outrigger, a support frame supporting the ladle, A melt supply means for supplying the molten metal from the pan to the side is provided, and the support frame is provided rotatably up and down, and a rotation means for rotating the support frame is provided. The molten metal supply means is configured to be expandable and contractible in the horizontal direction, and is provided with a molten metal receiving portion for receiving molten metal from a ladle that has been rotated upward integrally with the support frame, and opens and closes the molten metal receiving portion. A flexible cover body is provided, and after the outrigger landing movement, the cover body opening movement, and the molten metal supply means extending movement are performed, the rotating means is configured to be operable. It is a characteristic.

Therefore, according to the first aspect of the present invention, when the ladle receives the molten metal, the supporting frame is rotated downward by the rotating means. In this state, the molten metal is supplied to the ladle, and before and after this, the top opening of the molten metal receiving portion is closed by the cover body. By running the ladle transport vehicle, the ladle, that is, the molten metal can be transported to a target place. At this time, since the upper surface opening of the molten metal receiving portion is closed by the cover body, it is possible to prevent other things such as rainwater from entering the molten metal supply means.

After the ladle has been transported to the desired location, the outriggers are lowered and landed, the cover body is opened to open the top opening of the molten metal receiving portion, and the molten metal supply means is extended and moved. The tip is located above the intended location. Next, the rotating means is operated to rotate the support frame upward. When the rotating means does not operate at this time, the intended operations have not been completed. That is, when at least one of the landing movement of the outrigger, the opening movement of the cover body, and the extension movement of the molten metal supply means has not been completed, the rotating means does not operate in the interlock state.

When the desired operations have been completed in advance or by correction, the support frame can be turned upward by the operation of the turning means. This also rotates the ladle together,
Thus, the molten metal is supplied to the molten metal receiving section. The molten metal supplied to the molten metal receiving portion is directed from a tip portion thereof to a target location,
For example, it can be supplied to a melting furnace. After the intended supply is performed in this manner, the supporting frame is rotated downward by the rotating means, the molten metal supply means is contracted in the horizontal direction, and the upper surface opening of the molten metal receiving part is closed by the cover body. Then, the outrigger group can be raised to return to the initial state.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. The ladle transport vehicle 1 includes a front track head 2 and a rear trailer 10. The track head 2 is formed by providing wheels 4 and a driving unit 5 on a vehicle body 3. The driving unit 5 includes a forward handle 6, a reverse handle 7, and a driver's seat 8 that can be changed in front and rear directions. Is provided.

The trailer 10 has an outrigger 13 which is disposed on the front and rear portions of a loading platform 12 having wheels 11 so as to be distributed left and right. A front portion of the trailer 10 is connected to a rear portion of the track head 2 via a vertical shaft 14 or the like, and a steering cylinder device 1 is provided between the track head 2 and the trailer 10.
5 are provided.

A gantry 20 is provided on the carrier 12,
The gantry 20 includes a base pedestal 21 and the base pedestal 2.
1 comprises a standing frame portion 22 from the front. A pair of left and right connection brackets 23 are erected at the upper end of the erected frame portion 22, and pin holes 24 in the left and right direction are formed in these connection brackets 23.

Further, at the upper end of the standing frame portion 22, receiving brackets 25 are provided standing inside the side of the connecting brackets 23, and receiving recesses 26 whose upper surfaces are open are formed in the receiving brackets 25. Have been. Note that the lowermost semicircular portion of the receiving recess 26 and the pin hole 24 are configured to be located on the same axis.

A support frame 30 is provided on the gantry 20 so as to be vertically rotatable. This support frame 30
Is a lower frame portion 31, a front frame portion 32 erected from the front portion of the lower frame portion 31, and a pair of left and right side frame portions provided between the lower frame portion 31 and the side portions of the front frame portion 32. 33 and the like.

A pair of left and right connected brackets 34 are provided at the front end of the upper end of the front frame portion 32, and pin holes 35 are formed in the connected brackets 34 in the left-right direction. Further, a holding bracket 36 is provided at the center in the left-right direction at the rear of the lower frame 31, and the holding bracket 36 is formed with a vertically long hole 37.

The connecting pin 38 in the left-right direction (vehicle width direction) is inserted through the pin hole 35 of the connected bracket 34 and the pin hole 24 of the connecting bracket 23 of the gantry 20 in the support frame 30. As a result, it is connected to the gantry 20 so as to be rotatable vertically. In order to rotate the support frame 30 in the vertical direction, the base table 2
1 and an upper rear portion of the side frame portion 33, a rotating cylinder device (an example of a rotating means) 39 is provided,
These rotating cylinder devices 39 are configured to be driven synchronously. Here, the rotating cylinder device 39
A solenoid valve (not shown) is interposed in the oil supply path to the oil supply.

A ladle 40 is supported on the support frame 30 so as to be relatively movable in the vertical direction. That is, the ladle 40 is provided with a hot water outlet 41 at one location above the ladle,
A lateral locking pin 42 is provided via a bracket 43 in a state positioned on both sides of the hot water outlet 41. Here, both locking pins 42 are freely engageable with the receiving recess 26 of the gantry 20 from above, and are supported on the receiving bracket 25 side by the engagement.

On the opposite side of the hot water outlet 41, a lower end of the ladle 40 has a bracket 44 for holding.
And a pin hole 45 in the left-right direction is formed in the held bracket 44. Here, the pin holes 45 of the held bracket 44 can communicate with the elongated holes 37 of the holding bracket 36, and these pin holes 45
Holding fixture (bolts,
By operating a nut 46), the rear part of the ladle 40 is held on the support frame 30 side.

Thus, the ladle 40 is supported movably in the vertical direction within the length range of the elongated hole 37 with respect to the support frame 30 side. The opened receiving recess 26 is supported so as to be relatively movable in the vertical direction. In the bottom portion of the ladle 40, the receiving portions 47 for load cells (described later) are provided at three places (a plurality of places at a predetermined angle) every 120 degrees.
Is provided. At the upper end of the ladle 40, a lid 48 that can be opened and closed is provided.

A weight measuring means 50 for receiving only the ladle 40 by the relative vertical movement of the ladle 40 and the support frame 30 is provided on the loading platform 12 side. That is, the weight measuring means 50 includes a vertical lift cylinder device 51 provided on the loading platform 12 and the lift cylinder device 5.
One example is constituted by the load cells 52 provided on the upper surface of the device 1 and the like, and the load cells 52 are provided at three places (a plurality of places) so as to oppose the receiving portion 47 from below.

At the upper end of the standing frame portion 22 of the gantry 20, a stopper 55 for the locking pin 42 is provided. That is, the retaining device 55 is configured to open and close the upper end of the receiving recess 26 by swinging the retaining member 58 by operating the link mechanism 57 by the cylinder device 56.

A molten metal supply means 60 for supplying the molten metal from the ladle 40 to the side is provided at the portion of the stand 20 at the standing frame portion 22. That is, the standing frame 2
A molten metal receiving portion 61 is provided at an upper portion of the second member 2, and a horizontal fixed gutter portion 62 is provided at a lower portion of the molten metal receiving portion 61. Further, an intermediate movable gutter portion 63 which is expandable and contractible in the horizontal direction with respect to the fixed gutter portion 62 and a movable distal end gutter portion 64 which is expandable and contractible in the horizontal direction with respect to the intermediate movable gutter portion 63 are provided.

The intermediate movable gutter portion 63 and the tip movable gutter portion 64
In order to expand and contract in the lateral direction (left and right direction), a lower movable platform 66 moved left and right by a cylinder device 65 and a drive chain device provided on the lower movable platform 66 are provided below the standing frame portion 22. An intermediate movable table 68 which is moved left and right with respect to the lower movable table 66 by the intermediate movable table 66;
The movable table 6 at the intermediate position is
8 is provided. The intermediate movable gutter 63 is connected to the intermediate movable gage 68, and the tip movable gutter 64 is connected to the upper movable gage 70.

The molten metal receiving portion 61 is in the form of a rectangular box having an open upper surface, and a cover 71 capable of opening and closing the upper open portion.
Is provided. That is, the cover body 71 is provided with the cylinder device 72 provided on the front surface of the upright frame portion 22 in the vertical direction.
Thus, by rotating the link body 73 around the horizontal axis 74, the link body 73 is swung around the horizontal axis 74 to open and close the top opening of the molten metal receiving section 61.

In the ladle transporting vehicle 1 having the above structure, the landing movement of the outrigger 13 is detected by the detecting means.
The opening movement of the cover body 71 is detected by a detecting means, and the retaining movement of the retaining means 55 is detected by a detecting means. The extension movement of the molten metal supply means 60 can be visually confirmed. Is configured.
Although not shown, the detecting means is constituted by, for example, a limit switch.

The landing movement of the outrigger 13, the opening movement of the cover body 71, the extension movement of the molten metal supply means 60, and the movement of the retaining means 55 are performed. The solenoid valve is energized so that the rotation cylinder device 39 can operate.

The operation of the above embodiment will be described below. When the ladle 40 receives the molten metal, the rotating cylinder device 39 is contracted and moved, and the support frame 30 is rotated downward around the connecting pin 38, so that FIGS.
As shown by the solid line in FIG.
2 has landed. Before and after this, the lid of the supply hole provided in the lid 48 is opened. In this state, the molten metal is supplied to the ladle 40 through the supply hole, and then the lid is closed.

Before and after the cover 48 is put on the link body 73, the link body 73 is extended by the extension movement of the cylinder device 72.
Is rotated about a horizontal axis 74. Thereby, the cover body 7
1 is pivoted downward about a horizontal axis 74, and as shown in FIGS.
As shown by a solid line, the upper surface opening of the molten metal receiving portion 61 is closed by the cover body 71.

Then, by moving the ladle transport vehicle 1, the ladle 40, that is, the molten metal can be transported to a target place. At this time, since the upper surface open portion of the molten metal receiving portion 61 is closed by the cover body 71, it is possible to prevent other things such as rainwater from entering the molten metal supply means 60 side.

The weight of the actual ladle 40 containing the molten metal is measured by the weight measuring means 50 at an appropriate time, such as immediately after the molten metal is placed in the ladle 40 or after the molten metal is transported to the destination. That is, in a state where the lift cylinder devices 51 that are opposed to the received portions 47 from below are extended and the load cells 52 are brought into contact with the received portions 47 from below, FIG. The ladle 40 is lifted from the support frame 30 as shown by the imaginary line in FIG.

As a result, the ladle 4 is held against the support frame 30.
0 can be relatively raised. At this time, the locking pin 42 on the ladle 40 side is raised in the concave portion 26, and the holding connector 46 on the ladle 40 side is raised in the elongated hole 37. The ladle 40 can be in a free state with respect to the support frame 30. Thus, the weight of the ladle 40 side that is free from the support frame 30 can be measured by the load cells 52 group. At this time, by setting so that the main body weight of the ladle 40 is automatically subtracted from the measured weight, the actual weight of the molten metal alone can be measured.

In this way, the weight of the ladle 40 alone can be measured by setting the swinging rotating portion of the support frame 30 to a free state without including the weight of the support frame 30 and the like. Accuracy can be improved. Note that, depending on the timing of measurement, it is also possible to measure the weight of only the ladle 40 with the lid 48 removed.

After the intended weight measurement is performed, the lift cylinder device 51 group is contracted and moved to lower the load cell 52 group, so that the load cylinder is again taken as shown by the solid lines in FIGS. 1, 2 and 6. The pan 40 can be placed on the lower frame 31 of the support frame 30.

As described above, after the ladle 40 is transported to the target place, the molten metal in the ladle 40 is supplied to a target place, for example, a melting furnace. At the time of this supply, as shown in FIG. 8, while the traveling lever is in the neutral position, visual confirmation is performed, and the parking brake switch is turned on, and confirmation is performed by lighting the lamp. Next, the driver's seat 8 is turned over to face the reverse steering wheel 7 and the cab cover is lowered.

In this state, the outriggers 13 are first lowered and landed. When the detecting means detects that this descending movement has been sufficiently performed (interlocked), the lamp is turned on, so that visual confirmation can be performed.

Next, by operating the cover switch, the cylinder device 72 is contracted and moved, and the solid line in FIGS.
As shown by the imaginary line, the cover body 71 is swung upward around the horizontal axis 74 via the link body 73, whereby the top opening of the molten metal receiving part 61 is opened. The detection means detects that the opening movement has been reliably performed (interlocked), so that the lamp is turned on, whereby visual confirmation can be performed.

Next, the switch of the molten metal supply means 60 is operated to extend. That is, the cylinder device 65 moves the lower movable table 66 left and right, the drive chain device 67 moves the intermediate movable table 68 left and right, and the cylinder device 69 moves the upper movable table 70 left and right. As a result, FIG.
As shown in FIG. 5 to FIG. 5, the intermediate movable gutter portion 63 is extended laterally with respect to the fixed gutter portion 62, and the distal movable gutter portion 64 is extended laterally with respect to the intermediate movable gutter portion 63, The distal end portion of the distal end movable gutter portion 64 is positioned above a target location. It can be visually confirmed that the extension has been performed in a desired state.

Before and after this, it is confirmed whether or not the retaining means 55 is operated. That is, the retaining means 55
By lowering the retaining member 58 via the link mechanism 57 by the extension movement of the cylinder device 56, the upper opening of the receiving recess 26 can be closed by the retaining member 58, Thus, the locking pin 42 is prevented from coming out of the receiving recess 26. When the detecting means detects that the retaining operation has been performed reliably (interlocked), the lamp is turned on, whereby visual confirmation can be performed.

Next, the tilt switch is turned on to extend the rotation cylinder device 39, and the support frame 30 is rotated upward around the connecting pin 38. At this time, the rotation cylinder device 39 is turned on. When it does not operate, the desired operations have not been completed, and an interlock has been established.

That is, the landing movement of the outrigger 13, the opening movement of the cover 71, and the stopper 55
When at least one of the retaining movement and the extending movement of the molten metal supply means 60 is not completed,
The solenoid of the rotating cylinder device 39 remains in a non-energized state.
Will not work in the interlocked state. Therefore, it is possible to automatically prevent an unexpected operation due to an operator's operation error.

When the desired operation is completed in advance or by correction, and the solenoid of the rotation cylinder device 39 is energized, the tilt switch is turned on to extend the rotation cylinder device 39, and the support frame is turned on. Connect body 30 to connecting pin 3
8 can pivot upwards. This operation can be confirmed by a melody horn or the like.

Thus, the ladle 40 supported by the support frame 30 is also rotated integrally, so that the molten metal is received through the molten metal outlet 41, for example, as shown by a virtual line in FIG. To the unit 61. The molten metal supplied to the molten metal receiving portion 61 is provided with a fixed gutter portion 62 which is disposed at an angle,
It flows to the middle movable gutter portion 63 and the tip movable gutter portion 64 in this order, and can be supplied to the melting furnace or the like from the tip portion of the tip movable gutter portion 64.

The rotation between the support frame 30 and the ladle 40 is finally performed at an angle of 90 degrees or more (for example, 95 degrees) as shown by the phantom line in FIG. Can be almost completely discharged. During the rotation of the ladle 40 and the final rotation, the locking pin 4 on the front side of the ladle 40
2 is prevented from falling out of the receiving recess 26 by the retaining member 58 of the retaining means 55, and
Since the holding connection tool 46 on the rear side of the 0 is located in the long hole 37 of the holding bracket 36, there is no possibility that the ladle 40 will fall off from the support frame 30 side.

After the desired supply has been performed as described above, the rotation cylinder device 39 is contracted and moved to rotate the support frame 30 downward around the connecting pin 38, and the lower frame 31 Is landed on the loading platform 12. Further, the left and right movements of the lower movable table 66 by the cylinder device 65, the left and right movement of the intermediate movable table 68 by the drive chain device 67, and the left and right movement of the upper movable table 70 by the cylinder device 69 are performed to move the intermediate movable gutter portion 63 and the tip movable. The gutter portion 64 is contracted and moved in the lateral direction to be positioned below the fixed gutter portion 62, that is, within the vehicle width.

Further, the cylinder device 72 is extended and moved,
The cover body 71 is swung downward around the horizontal axis 74 to close the top opening of the molten metal receiving portion 61. Further, the outriggers 13 are raised. Thereby, it is possible to return to the initial state.

It is to be noted that the ladle 40 is used for repair or replacement.
Is removed from the support frame 30, the link mechanism 57 is operated by the cylinder device 56 of the retaining means 55, and the retaining member 58 is rocked to open the upper end of the receiving concave portion 26, and the holding coupling tool 46 is moved. Let go. As a result, the ladle 40 has no connection with the support frame 30, and
Thus, it can be detached from the support frame 30 by lifting a crane or the like.

In the embodiment described above, the outrigger 1
3, the opening movement of the cover body 71 and the retaining means 5
When the operation of at least one of the retaining movement 5 and the extension movement of the molten metal supply means 60 is not completed, the solenoid of the rotating cylinder device 39 is not energized. Depending on the type of the ladle 30 and the ladle 40, a configuration in which the retaining operation of the retaining means 55 is omitted may be employed.

In the embodiment described above, the rotating cylinder device 39 is shown as the rotating means, but it may be of another type such as a link type or a chain rotating type.

In the above embodiment, the outrigger 1
3, the opening movement of the cover body 71 and the retaining means 5
5 and the extension movement of the molten metal supply means 60 are performed in this order, but the operation order can be arbitrarily changed.

In the above-described embodiment, the weight is measured by the weight measuring means 50 in a state where the ladle 40 is lifted from the support frame 30, but the weight may be measured in another form. Also, the type without the weight measuring means may be used.

[0050]

According to the present invention described above, the molten metal is supplied to the ladle, and the ladle, that is, the place where the molten metal is intended, is run by closing the upper opening of the molten metal receiving portion with the cover body. In this case, the cover body can prevent other substances such as rainwater from entering the molten metal supply means.

After the ladle has been transported to the desired location, the rotating means is operated to rotate the support frame upward. At this time, the landing movement of the outrigger and the opening movement of the cover body are performed. At least one of the extension movements of the molten metal supply means.
If one operation is not completed, the rotation means will not operate in the interlocked state, and therefore,
An unexpected operation due to an operator's operation error can be automatically prevented beforehand.

When the desired operations are completed in advance or by correction, the support frame can be turned upward by the operation of the turning means, whereby the ladle is also turned integrally.
The molten metal can be supplied to the molten metal receiving section. The molten metal in the molten metal receiving section can be reliably and smoothly supplied from a leading end portion thereof to a target location, for example, a melting furnace.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention, and is a partially cutaway side view of a trailer portion in a ladle transport vehicle.

FIG. 2 is a side view of the ladle transport vehicle.

FIG. 3 is a plan view of the ladle transport vehicle.

FIG. 4 is a partially cutaway rear view of the ladle transport vehicle.

FIG. 5 is a rear view of a molten metal supply unit in the ladle transporting vehicle.

FIG. 6 is a partially cutaway side view for explaining a measuring operation of a ladle supporting portion in the ladle transporting vehicle.

FIG. 7 is a partially cutaway side view of a cover body in the ladle transporting vehicle.

FIG. 8 is an explanatory diagram of the operation of the ladle transporting vehicle during the tilting operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ladle transport vehicle 2 Truck head 10 Trailer 12 Loading bed 13 Outrigger 15 Steering cylinder device 20 Frame 30 Support frame 38 Connecting pin 39 Rotating cylinder device (Rotating means) 40 Ladle 41 Hot water outlet 50 Weight measuring means 55 Stopper Means 58 Retaining member 60 Melt supply means 61 Melt receiving part 71 Cover body 72 Cylinder device

Claims (1)

[Claims] An outrigger, a support frame for supporting a ladle, and a molten metal supply means for supplying molten metal from a ladle to a side are provided on a carrier, and the support frame is vertically disposed. A rotatable means for rotating the support frame is provided in a rotatable manner, and the molten metal supply means is configured to be expandable and contractible in the horizontal direction and is turned upward integrally with the support frame. A molten metal receiving portion for receiving the molten metal from the moved ladle is provided, and a cover body capable of opening and closing the molten metal receiving portion is provided. The landing movement of the outrigger, the opening movement of the cover body, and the extension movement of the molten metal supply means are provided. The ladle transport vehicle is characterized in that the rotating means is operable after the above operation is performed.