DE29813904U1 - Device for moving a container, in particular a heavy metallurgical vessel - Google Patents

Description

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Effert, Bressel and colleagues

European Patent Attorneys

PAe Eft'ert, Bressel and colleagues · Radickestraße 48 ■ D-12489 Berlin

Dipl.-Ing. Udo Effert *

Dipl.-Ing. Dr.-Ing. Burkhard Bressel *

Dipl.-Ing. Volker Zucker *

•European Trademark Attorney

Radickestrasse 48 D-12489 Berlin

Telephone 030-670 00 60 Fax 030-670 00 670

Mechanical Engineering KIROW Leipzig Rail & Port AG Spinnereistraße D-4179 Leipzig

24 July 1998 UE/pa

GM01.012.8DE

Device for moving a container, especially a heavy

metallurgical vessel

Device for moving a container, in particular a heavy metallurgical vessel

Description
5

The invention relates to a device for moving a container, in particular a heavy metallurgical vessel, and a vehicle for moving heavy metallurgical vessels.

From the German utility model DE 297 10 956 U a vehicle is known which is intended for moving heavy metallurgical vessels. The vehicle has a tilting arm with which the vessel can be lifted from the ground and placed on a platform of the carriage, as well as pivoted into a tilting position and an overhead position. This metallurgical vessel, e.g. a slag vessel, must on the one hand be picked up in as vertical a position as possible and, after being picked up, lifted onto the vehicle without the contents of the vessel, liquid slag in an amount of, for example, 1001 at a temperature of 1000 ⁰ C or more, partially spilling out of the container and damaging the vehicle. For this purpose the tilting arm is equipped with a fork at its flying end, which makes it possible to partially enclose pins attached to both sides of the container and thus move the vessel. Using hydraulic cylinders, this tilting arm is swiveled into the position shown after the vessel has been picked up and can also empty the container when tilted by 130° or more, or place it on the ground with its opening in a 180° position. In the latter position, the slag container can be completely emptied, and slag that is already cooling and adhering to the container also falls off. The tilting arm itself is mounted in a swivel bearing at the end of the vehicle. The vehicle is supported by a rear support during loading and unloading.

A similar vehicle is known from patent DE 36 05 665 C2. The tilting device also includes a locking and supporting device for the edge of the slag container. This supporting device can be activated after the slag container has been picked up and positioned on the vehicle and thus enables the container to be tilted by holding it in a certain position relative to the tilting device.

Both devices and vehicles have one problem in common. After the container has been picked up from the ground behind the vehicle and while the container is being swiveled onto the vehicle, the pin in the tilting device must rotate so that the vessel is aligned vertically and horizontally so that no slag spills over. The pins of the container rest in an opening in the tilting device and form a friction pair with the fork. This friction must be overcome by the container when it swings out while the container is being picked up. This is all the easier the lower the center of gravity of the filled container is. The friction forces generate a moment of force at the distance of the radius of the pin, which generates a restoring moment due to the weight of the container at the distance from the pin axis. If the moment due to the friction forces is greater than the restoring moment, the container cannot be swung out and it is tilted, which can lead to the aforementioned slag flowing out.

The state of the art according to DE 36 05 665 C2 does not prevent the slag from flowing out, since the container is not held in a vertical or desired horizontal position by the additional support device on the carriage during the pick-up movement.

The state of the art mentioned at the beginning according to the German utility model specification does not have a device that enables the position of the container to be corrected. Attempts to reduce friction by manually applying lubricants were unsuccessful.

A tilting and swiveling device for heavy containers is also known in practice, which has a similar support as in the German patent specification cited. In this case, the receiving part of the tilting arm is designed as a crane hook and hangs from a lever arrangement supported by hydraulic cylinders. However, this device is not suitable for emptying a container or setting it down overhead, and the support only relieves the load on the hydraulic cylinder during horizontal transport of the container.

From the published patent application DE 44 03 350 A 1, a vehicle with a tipping device is known that allows a slag container to be picked up and tipped at an incline of around 130°. The receiving part of the tipping device or the tipping arm is provided with a locking element or locking bracket that is designed like a crane hook, but in principle only has a locking and locking function for the pin on the tipping device. The locking bracket only takes on part of the weight of the container during the tipping process, but not when it is picked up.

Therefore, the problem for the invention is to create a possibility for vertically swinging a container, in particular a heavy metallurgical vessel, whereby the functions of picking up, lifting, emptying and overhead setting down of the container are ensured.

The problem is solved according to the invention by claims 1, 7 and 8. Further developments of the invention are covered in the subclaims.

In companies, especially metallurgical companies such as steelworks, metallurgical vessels are often used, e.g. for transporting slag or liquid metal. These vessels are very durable and some of them have been purchased for decades. Depending on the transport facility, the center of gravity or the location

the center of gravity relative to the transport pins on the vessels is irrelevant. In the past in particular, such vessels were often placed on railway wagons using a crane. However, nowadays, heavy-duty vehicles that are roadworthy are increasingly being used to transport such metallurgical vessels. In this case, regardless of the position of the center of gravity of the vessels, it must be ensured that these containers can be picked up, emptied and set down again without damage.

For this purpose, a first solution according to the invention provides for the tilting device arranged on the vehicle, which is also suitable for picking up, lifting, tipping and setting down the container, even overhead, to be designed in such a way that the containers are designed by means of a receiving part arranged on the tilting arm for the pins on both sides, which are arranged above the center of gravity of the container, in such a way that the receiving parts are freely rotatably mounted and are additionally held in positive engagement with the pin by means of a lock after the container has been picked up.

The free rotation of the receiving part, e.g. by using a plain bearing or roller bearing, ensures that the container always swings out after being lifted using the receiving part so that the container contents do not spill over.

The receiving part can be designed in the form of a crane hook, which is mounted in the tipping device above the hook part, e.g. in plain bearings. Because the distance to the center of gravity of the container is increased with the help of the hook, the restoring moment of the container is significantly greater than with conventional devices.

In a further development of the receiving part, this is designed as a ring

or part of the ring, whereby the inner parts of the ring that contact the pins are mounted in an outer part of the ring by means of plain bearings or roller bearings. In this case, no extended lever arm is required because the bearing makes it easier to overcome friction. As a rule, a plain bearing or specially designed roller bearings that can withstand the heat radiated from the vessel will have to be used.

In another further development of the invention, the inner part or the inner parts of the receiving part are equipped with freely rotating rollers, so that the pin lies in these rollers and thus only has rolling friction, which facilitates the swinging of the vessel.

The receiving parts, particularly in the form of a ring, can also be mounted on the tilting arms in such a way that they can be adjusted laterally, i.e. from the front side of the pin, towards the middle of the vessel and are thereby slipped over the pin.

The locking mechanism of the receiving part is also attached to the tilting arm at a constant distance from the device part intended for receiving the pin, whereby this locking mechanism is designed as a movable mandrel, e.g. movable by means of a fluid cylinder, and in its active function reaches behind the receiving part so that the receiving part cannot move away from the pin of the container or the hook remains in the desired position.

The invention further relates to a vehicle for moving such heavy metallurgical vessels, which is equipped with a device according to the invention.

In a second solution, the journal itself is provided with a plain bearing or roller bearing, the outer ring of which is supported by the receiving part when moving

of the container. This bearing can be a separate part on its own or can be slipped over the pin by the receiving part or can be permanently attached to the pin. The pin friction is thus minimized in an intermediate link, the bearing. If the bearing is permanently mounted, the pin can be equipped with a lubrication device for the bearing, which can be operated from the front of the pin and reaches through the pin to the bearing.

The invention will be explained in more detail with reference to a drawing.

They show in schematic form:

Fig. 1 a tilting device that can be mounted on a vehicle for picking up and moving a slag container;

Fig. 2 Vehicle with a tipping device according to Fig. 1 with two loading positions of the container;

Fig. 3 a first tilting position of the container and the device; Fig. 4 a second tilting position of the container and the device; Fig. 5 overhead pickup position of the device and the container; Fig. 6 section X-X according to Fig. 1 through part of the device.

According to Figure 1, a tilting device for picking up and moving a slag container 1 is arranged on a corresponding carrier vehicle 6 and consists essentially of two tilting arms 7 mounted on both sides of the carrier vehicle and connected to one another in a torsionally rigid manner, actuated by hydraulic tilting cylinders 8, the bearings 9 for the tilting arms being arranged at the end of the vehicle frame.

An additional tipping device 10 is attached to the tipping arms for the complete emptying of the container 1. This is also moved by two hydraulic actuating cylinders 11, which are attached to the tipping arm 7. At the same time, the additional tipping device 10 includes a locking mechanism in the form of two hydraulic locking cylinders 12, which can engage in a form-fitting manner in pockets 16 on the container.

A receiving part is freely rotatably suspended on the tilting arm 7, designed in the manner of a crane hook 13. The solid hook is arranged on the tilting arms in a floating manner towards the middle of the vehicle and is connected to it by a bearing 14. Due to the free rotation of the hook 13, the container 1 evens out when its center of gravity 2 (Figure 6) is just below the axis of the pin 3 of the vessel 1. The hook 13 and the vessel 1 practically form a unit due to the friction forces between the pin and the receiving part 13. The common pivot point for the hook and vessel is now the bearing 14 in the tilting arm 7. This increases the distance between the center of gravity and the effective bearing of the vessel accordingly and the restoring moment due to the gravity of the bucket is increased accordingly, so that the vessel and hook always remain vertical during the movement until it is set down on the vehicle. The function of the device and the vehicle becomes clear based on the various functions of the device and the vehicle with reference to Figures 2 to 6.

To pick up the container on the vehicle according to Figure 2 (position A), the vehicle moves backwards towards a vessel standing on the ground or on a platform, e.g. a slag bucket 1. The tipping device is extended via the two side tipping cylinders 8. The hook 13 then hangs down behind the receiving pin of the bucket 3. The vehicle moves forward until the hook 13 encloses the pin 3 in the manner shown and the hook bearing 14 is located approximately in the middle above the pin 3. The vehicle now extends its rear support 15 in order to prevent tipping around the rear wheels of the vehicle when the heavy bucket is lifted. The tipping cylinders 8 move the tipping device with the bucket hanging on it into the position (position B) in which the bucket is shown on the vehicle. During the movement sequence from the bucket’s position on the ground to its position on the vehicle, the bucket constantly swings so that no slag can flow out.

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According to Figure 3, the tipping process for the container can be initiated at the unloading point after the support 15 has been extended again. To do this, the locking cylinders 12 of the additional tipping device 10 mentioned above are inserted into pockets 16 arranged on the container and thus the mobility - the swiveling of the container - between the tipping arm 7 and the slag container 1 is blocked. In addition, two locking cylinders 17 additionally attached to the tipping arms, comprising a mandrel acted upon by a fluid cylinder, are extended, which block the hook 13 to the tipping arm and at the same time relative to the bucket by, as shown in Figure 6, engaging behind the outer edge of the receiving part 3 or its part 21 and thus restricting the mobility of the receiving part 13 relative to the pin 3. Now the two tilting cylinders 8 are extended and the tilting device rotates the bucket through the predetermined kinematics into a position of 130°, as shown in Figure 3, and thus empties the slag container.

To empty the container completely, the container is tilted further as shown in Figure 4 so that its opening finally points downwards. To do this, the hydraulic actuating cylinders 11 of the additional tilting device 10 are extended to reach this position. With the help of these cylinders, the container is pushed into the end position (overhead tilt) via the pivot point 18 on the tilting arm. The synchronous movement of the additional tilting device 10 on both sides of the container is ensured by a torsion-resistant connecting rod 23.

After emptying the container, it should generally cool down. To do this, the bucket is swung back onto the vehicle in the position shown in Figure 2 and brought to the position shown in Figure 5 at the storage location and set down. Figure 5 also shows the position that the tipping device on the vehicle takes when such a set-down container is to be picked up again. To do this, the hook is in the position shown.

(covered by the tipping device) is pushed over the pin 3, in which the vehicle drives backwards and then the locking cylinders 12 are locked into the previously mentioned pockets 16 on the container 1. In this position too, of course, the locking cylinders 17 for the hooks are extended, since here too the hook must be held in position in order to be able to grip the pin. The locking mechanism 17 does not have the function of holding the hook on the pin, since the slag container is now empty. After gripping the pin, the tipping device can be moved backwards using the tilting cylinder 8 so that the container finds its position (position B in Fig. 2) on the vehicle.

Figure 6 shows a detail of the receiving part 13 according to section X-X in Figure 1, as it is in operative function with the pin 3 of the container 1. The receiving part 13 has a part 20 on the inside, which carries the pin as a partial ring welded to the receiving part.

According to a further development of the invention (not shown), the part 20 can be slide-mounted or roller-mounted in the outer part 21 of the receiving part. This can be done in a similar way to that shown on the pin bearing 14 of the receiving part 13, which is freely rotatable relative to the tilting arm 7. The previously mentioned pin bearing 18 is also attached to this tilting arm 7, as well as the movement device and the locking dome 17.

In another variant not shown, the pin 3 in the opening 22 of the receiving part 13 can also rest in a roller bearing, which then replaces the inner part 20 of the receiving part 13 shown here.

Claims (8)

Device for moving a container, in particular a heavy metallurgical vessel Protection claims 5 1. Device for picking up, lifting, tipping and setting down a container which has on both sides above its center of gravity receiving pins, with tilting arms which have receiving parts which can partially wrap around the pins, characterized in that the receiving parts (13) are freely rotatable and are held in a defined relative position to the pin by means of a locking mechanism (17) after or for picking up the container (1). 2. Device according to claim 1, characterized in that the receiving part is designed as a hook (13) in the manner of a crane hook. 3. Device according to claim 1, characterized in that the receiving part (13) is designed as a ring or part of a ring, the inner parts (20) of which contact the pins (3) are mounted in an outer part (21) by means of plain bearings or roller bearings. 4. Device according to claim 3, characterized in that the inner parts (20) are designed as freely rotatable rollers. 5. Device according to one of the preceding claims, characterized in that the locking mechanism (17) is also attached to the tilting arm (7) and comprises a movable mandrel which engages behind the receiving part at a constant distance from an opening (22) in the receiving part (13) intended for receiving the pin (3). 6. Device according to one of the preceding claims, characterized in that the receiving parts are designed as arrangements which can be slipped over the pins from the front side of the pin towards the middle of the container. 7. Vehicle for moving a heavy metallurgical vessel (1), equipped with a device according to one of claims 1 to 8. Device for picking up, lifting, tipping and setting down a container which has on both sides receiving pins arranged above its center of gravity, with tipping arms which have receiving parts which can partially wrap around the pins, characterized in that the pin is provided with a rotary bearing, the outer rotatable ring of which can be wrapped around by the receiving parts.