FI65326C - ANORDING FOER HANTERING AV ELDFASTA ELEMENT VILKA ANVAENDS SASOM INRE BEKLAEDNAD I METALLURGISKA REAKTIONSKAERL - Google Patents

Description

2 65326 workplaces take place with various mechanical transport systems that automatically unload them onto the scaffolding bridge. Usually, a roller track is used, which is directed radially close to the masonry object, so that the elements are obtained without being manually moved to the respective location.

However, these handling systems have the significant disadvantage that at least one worker is required to place the element in its final location, i.e. directly in line and attached to an adjacent element that is already in place. Because the elements can weigh 50-200 kg, their final installation in place is quite cumbersome and time consuming. In addition, the manual positioning of the elements can sometimes also take place in such a way that they do not adhere tightly to each other, which is, however, necessary because slag does not get between the elements when the converter is in use, as these points wear out quickly.

The main object of the invention is to develop such a device by means of which the elements are mechanically tightly connected to each other. The transfer of the elements in front of their final location takes place by means of a previously known and suitable device.

This object of the invention is achieved by using a device with two pushers. One of them rests on the front surface of the element and moves the element in the radial direction. The second pusher, on the other hand, rests on the outer side surface of the element and moves the element mainly in the tangential direction. Both pushers have separate actuators to bring them into the working position, in which case they move the element in question, and again into the initial position when the element is in place. These operations, which also include moving the elements to their final location along the roller track, preferably take place automatically.

The pushers can be moved either hydraulically or with compressed air. However, since drawing electricity inside a metallurgical tank is the easiest way to supply energy, the use of electric motors is generally recommended.

According to a preferred construction, the pushers are placed in the working position and removed from the element after this installation by means of the connection in question, using the same devices - usually electric motors - as when moving the pushers to the working position.

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In addition, according to the invention, either overload detectors or limit switches are provided so that the pushing of the elements ends when they touch the permanent masonry or wall of the converter, or they are arranged in a row inside for cylindrical masonry. Depending on the design of the pushers for tangential adjustment of the elements, their thrust can be used to turn and move the work bridge or the entire building to that position to place the next element before the pusher retracts in the tangential direction.

Another structural variant of the invention comprises - specifically in the case of masonry of at least two concentric rows of elements - a sliding plate for the elements. This plate, which corresponds approximately in width to the masonry elements, is attached to the support part of the device according to the invention and is directed at a slight inclination with respect to the horizontal plane towards those elements which are in place in the previous row. The elements coming along the roller track slide on this plate so that any unevenness in the height of the seams, which po. the disk is found not to interfere with the final placement of the elements (top row) * without the disk these would be a significant inconvenience. Once one radial row, usually comprising 2-3 elements, is in place, the plate attached to the support portion of the device automatically moves to the location of the next radial element row because the pusher applies a certain thrust in the tangential direction to the last element of the row.

Two structures according to the invention will now be described by way of example with reference to the accompanying drawings, in which Figure 1 is a front view of a refractory element mounting device according to the invention, and Figures 2a and 2b illustrate a front view and a cross-section of a device according to the invention.

Figure 1 shows a complete row A of large elements. The element B is at the end of the distance traveled on the roller track 38 at a certain distance from the element B * f which is already in its final position, and also from the wall of the converter.

As the element B moves forward on the roller track 38, the pusher 11 is in its upper position.

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When the installation phase of element B is completed, motor 1 is started. It rotates counterclockwise and moves to the right a chain 20 passing through the wheels 3, 4, 5 and held tight by the tensioning wheel 2.

The wheel 14 provided with a drum and a brake 15 slows down the movement of the carriage 22 until the pusher 11 is in the working position.

Thus, as soon as the engine is started, the chain 20 starts to rotate the gear 7 counterclockwise, so that the crank 9 moves from the stop 13 to the stop 12. By means of the rotating lever 10, the pusher moves to its working position and locks into it.

The wheel 7 is now locked counterclockwise, and the chain 20 moves the carriage 22 to the right. The carriage 22 is placed on the fixed rail 21 by means of drive rollers 16, 17 and guide rollers 18, 19. As the carriage 22 moves, the pusher 11 moves the element B on the row A parallel to the element B 'to the end of its radial trajectory. The control device is then operated, depending on the situation, as already mentioned, a path detector (terminal switch), which is not shown in the figure, or a clamp 2 connected to the overload detector.

When the element is in the radially correct position, the direction of rotation of the motor changes.

At the beginning of this stage of operation, the wheel 14 provided with the brake 15 slows down the displacement movement of the carriage 22, so that the chain 20 moves the gear clockwise. The crank 9 pivots to the stop 13, and by means of the rotating lever 10 the pusher 11 returns to its upper 1. rest position.

At this time, the wheel 7 is locked again clockwise, and the chain 20 moves the carriage 22 to the left to the starting position, which is delimited by the respective adjusting device. Engine 1 is at a standstill until the first phase is restarted.

The tangential adjustment of the elements takes place with a tangential pusher 33. In this part of the device, the motor 30 is fixed to the shaft 31 ·, rotation by means of a flexible support part 37. The motor rotates the shaft 31. This again moves, by means of the arm 32, a pusher provided with an articulated structure 34.

The pusher 33 moves the element B against the element B 'already in place.

The flexible support member 37 connected to the overload detector determines the length of the trajectory of the pusher 33.

65326 At the end of the control function, the change in the direction of rotation of the motor 30 causes the pusher 33 to return to its rest 1. starting position, whereby the motor stops and starts only at the beginning of the corresponding installation phase of the next element.

The position of the pusher 33 can be adjusted at least in the radial direction so that it is adapted to the position of the elements, regardless of the masonry location in the tank and the size of the elements used.

In the device shown in Figures 2a and 2b, the radial displacement phase of the element B begins when the pusher 11 is in a vertical working position behind the element B.

When the engine 1 starts, the chain 20 moves the carriage 22, which is placed on the roller track 21, approximately horizontally to the position specified for the right element B.

The mechanism 39, the position of which is adjusted on the basis of the desired final position of the element B, rotates the pusher 11, which has been tightened by the spring 40, in the pivot shaft 41 beyond the zero point up to the stop.

From this point on, the motor 1 can rotate in the opposite direction and move the carriage 22 to the starting point, whereby the mechanism 39 'moves the pusher 11 to its working position behind the next element.

This element had moved to its initial position due to the signal given by the carriage 22 after the installation operation of the previous element had ended.

The elements slide on a plate 42 attached to the body 43 of the device.

The tangential adjustment of the element B takes place by means of a pusher 33 located in the middle of the outer side surface of the element.

The pusher 33 is articulated so that it can adapt to the conicity of the element. The pusher is driven by a hydraulic piston 44. The pusher is mounted as a resilient structure on a radially adjustable support member 45.

The trajectory of the pusher 33 is such that it moves the sliding plate together with the bridge to which it is integral, to the next radial row position of the elements, while holding the last installed elements in place.

A certain mechanism (not shown) allows the piston 44 to return. In this connection, the next radial displacement step begins for the placement of the next element.

Claims (7)

Apparatus for handling refractory elements (B, B1) for lining metallurgical reaction vessels, characterized in that it comprises essentially two separate pushers (11, 33), the first of which rests on the front surface of the element and moves the element radially, and the second of which rests on the outer to the side surface and move the element substantially tangentially, with each pusher being actuated independently to move the pusher to the working position, to move the element, and to bring the pusher to the home position. Device according to Claim 1, characterized in that the pushing devices (11, 33) are brought into the working position and retracted after the element has been fitted in place by means of coupling by means of the same devices which move the pushing devices into the working phase. Device according to Claim 1 or 2, characterized in that the movement of the pushing devices is stopped by means of main switches or overload detectors which are arranged at the desired points in the working path. Device according to one of Claims 1 to 3, characterized in that the trajectory of the tangential pusher (33) is sufficient for moving the elements tangentially and also for moving the device and its support part by a distance corresponding at least to the width of the elements (B). Device according to one of Claims 1 to 4, characterized in that the sliding plate (42), the width of which substantially corresponds to the width of the elements (B), is fastened to the frame (43) and is inclined slightly inclined to the horizontal at least in the lower lining element row (A). towards. Device according to one of Claims 1 to 5, characterized in that the radial pushing device (11) is integral with the carriage (22) which moves on a guide rail (21) which is substantially horizontal. 6 65326 Device according to one of Claims 1 to 6, characterized in that the tangential pusher (33) is pivoted via a horizontal arm (32) and a vertical shaft (31) by means of a freely rotating motor (30) in the shaft and is kept in rotation by a resilient support (37). through.