CA1109030A - Change-over car for metallurgical vessels, especially steel-plant converters - Google Patents
Change-over car for metallurgical vessels, especially steel-plant convertersInfo
- Publication number
- CA1109030A CA1109030A CA332,547A CA332547A CA1109030A CA 1109030 A CA1109030 A CA 1109030A CA 332547 A CA332547 A CA 332547A CA 1109030 A CA1109030 A CA 1109030A
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- terized
- fluid pressure
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- pressure means
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Abstract
ABSTRACT
A change-over car for supporting metallurgical vessels has hoisting units arranged upon a surface approximating to the outline of the vessel acting through tension members hinged to the lower ends of intermediate members which extend down from a hoisting table which engages the vessel. This arrangement permits the hoisting units to be located adjacent the centre of the car, permitting a compact construction of the car.
A change-over car for supporting metallurgical vessels has hoisting units arranged upon a surface approximating to the outline of the vessel acting through tension members hinged to the lower ends of intermediate members which extend down from a hoisting table which engages the vessel. This arrangement permits the hoisting units to be located adjacent the centre of the car, permitting a compact construction of the car.
Description
9~30 The invention relates to a change-over car for me-taLlurgical vessels, especially steel-plant converters.
Vessel change-over cars are used to transport ~etal-lurgical vessels, the lining of which has become worn, from the vessel stand to a relini~ s-tand and back again. To this end, the vessel mus-t be released from its retaining ~eans. In steel plants, the said retaining means are in the form of tilting frames, carrier rings~ pivot arms, casting devices, and the like. The vessels are transported on intersec-ting tracks, the chassis of the car being lifted at the track intersection, rotated through 90, and set down upon the other - track. To this end, the car of the present invention makes use of a hoisting piston located at the centre of the car chassis, it being known to provide hoisting pistons located at the ends of the car. The latter, however, must be able to hoist to a considerable height, since the car, with the vessel, must be lifted to the operating position of the said vessel.
Retaining means for metallurgical vessels are of widely varying designs. The retaining means employed in the car of the invention requires a hoisting table which will lift the vessel in guides which have become distorted due to heat or wear.
The hoisting table compensates for this inaccuracy by means of the interposed pivotable joints, preferably ball-and-socket joints, and tension members hinged thereto.
It is known from German Auslegeschrift 20 08 396 to compensate for these inaccuracies by means of individual adjustment of the hoisting table's height and inclination, in that pairs of hoisting devices are arranged at the corners of the rectangular car chassis, the said hoisting devices having universal joints at their ends, to which cylinders are attached, additional universal joints being provided on tension 39~30 members constituting a connection with a bridge carrying the vessel. In this configuration, the tension members may adjust themselves in the form of a parallelogram while the hoisting devices maintain their vertical positions. Al-though the adaptability of the two bridges meets practical requirements, the "bridge" system requires a relatively wide and long change-over car. Thus known change-over cars require a wide rail-track which is abnormal.
It is the purpose of the present invention to provide a transport vehicle or car for metallurgical ves-sels, equipped with hoisting devices for a hoisting table having an articulated mounting, in such a manner that they are compact from the point of view of the arrangement of the hoisting devices and as regards the hinge system for the hoisting table, thus making it possible for the vehicle to be made narrower than heretofore and to run on tracks of normal width. The vehicle is also to be lighter and is to be suitable for small and large metallurgical vessels with minor structural modifications.
The present invention provides a transport vehicle for metallurgical vessels, comprising a carriage frame; rail engaging wheels on said carriage frame; an interior frame rotatably mounted on said carriage frame; ground engaging fluid pressure means on said interior frame for lifting said frame from said rails; a lift table on said vehicle for receiving metallurgical vessels therein; second fluid pressure means on said interior frame for raising and lowering said lift table; means connecting said second fluid pressure means to said lift table, said connecting means including at least one ball-and-socket joint means connected to an articulated stabilizer support means; the improvement characterized by said second fluid pressure means positionedwithin abase support space defined by the B
diameter of a vessel to be supported; said connection means includes a plurality of spaced apart intermediate connection elements in said base support space and rigidly connected to said lift table and extending below said lift table; said stabilizer support means includes a plurality of cooperating stabilizers in said base support space and extending between said second fluid pressure means and said intermediate con-nection elements; the top of each stabilizer support means connected to the top of said fluid pressure means; the bottom of each stabilizer support means connected to the bottom of said cooperating intermediate connection elements;
and said top and bottom connections of said stabilizer sup-port means being said ball-and-socket means. This arrange-ment provides hoisting units located closer to the centre of the change-over car. Although this central arrangement below the vessel results in a very high structure, this problem is overcome, according to the invention, by the use of the said intermediate connection elements. The articu-lated support of these elements in the lower parts of the car or vehicle results in a considerable reduction in its height. It is desirable to use stabilizer support means which are tension members of a cross-section suitable for high tensile forces and which thus contribute to the reduc-tion of the width of the structure. The length of the ten-sion members is a characteristic which increases the adapt-ability of the supports to distorted vessel surfaces.
Longer tension members assist adaptability by increasing the horizontal displaceability of the lift table. By vir-tue of the separation of piston-cylinder units forming the second fluid pressure means from the tension members, the use of relatively small cross sections, and long tension members, the change-over car formed by the transport vehicle of the invention may be made quite compact. This compact 3~) design reduces the width, thus allowing the car to travel on standard steel-plant tracks. Furthermore, the design accor-ding to the invention saves a considerable amount of weight, and it may also be used for both large and small metallurgi-cal vessels.
According to the preferred form of the invention, the intermediate connection elements are in the form of sup-ports extending downwardly from the lift or hoisting table and associated with piston-cylinder hoisting units distri-buted around its periphery. It is desirable for the length of the intermediate connection elements to be approximately equal to that of the intermediate members, thus providing a substantial reduction in structural height. In this case, the load on the intermediate members is a buckling load, wheras the load on the tension members is a tensile load.
The piston-rods of the piston-cylinder units are therefore stressed only in tension. Although such piston-cylinder units have a long travel, they are less expensive and are lighter.
The intermediate connection elements or members may be in the form of forked supports extending downwardly from the hoisting table, with one piston-cylinder unit arranged within each space enclosed by the forks. This arrangement also reduces the structural width of the car.
In another modification, the intermediate members are in the form of U-shaped frames each mounted upon one of the joint housings of the piston-rods. The advantage of this arrangement is that it achieves double-hinging of the hoisting table and doubling of the number of support-points for the hoisting table, which results in still bet-ter adaptability at the contact points when the vessel is installed. The invention assumes that the hoisting table is deformed elastically under the weight of the vessel, B ~
3~
which may amount to some hundreds of tons. The double hin-ging action readily compensates for this deformation.
The adaptability of the hoisting table to the inserts for retaining the vessel may also be improved by using U-frames in the form of downwardly-open housings surrounding the periphery of the joint housing with a cer-tain amount of displacement-play. The independence of individual support-locations may also be increased by join-ing all of the U-frames rigidly together, by means of bars, to form a polygon.
In the case of vessels having retainers on oppo-site sides of their circumferences, it is desirable for the piston-cylinder units, with the intermediate members, to be arranged on the long .
B -4a-~1~9~0 sicles of the c,lr to ~o~ access apertures.
~ccording to still another preferred form of the inven-tion, an arrangement of the ho:is-ting devices and link~system ~!
which reduces the s-tructural width of the car consists in that the upper ends of the hois-ting members, hinged to the inter-mediate members, are hinged to the cross-member of a guide-column arranged ver-tically and centrally between the supports and mounted displaceably in a guide housing. This arrangemen-t reduces the structural width of the car and also provides the desired horizontal displaceability of the hoisting table and its supports over a range of about 30 - 70 mm.
In another preferred configura-tion, the tension members themselves may be in the form of piston-cylinder units, a ball-and socket joint being provided on each cylinder-housing and piston-rod.
The guide column, which is displaceable in a guide housing, may also be in the form of a piston-cylinder unit.
The structural height of the hoisting table may be still further reduced by making the guide-column, which is displace-able in the guide-housing, in the form of a telescopic piston-cylinder unit.
~ For link-systems providing, as with the arrangement described~ horizontal displacement of the hoisting table over only a range of about 30 to 70 mm, and for link-systems accor-iC'C~ /4 f c J
ding to the invention in which dauble~adaptation hinging is considered desirable, provision is made for the supports carrying the metallurgical vessel to be in the form of short-lift piston-cylinder units arranged upon the hoisting table or upon the U-frames associated with the piston-cylinder units.
Finally, extremely low structural height of the change-over car may be achieved by providing the inner frame part with vertical recesses for the downwardly-ex-tending intermediate ~39~30 members of piston-cyl:inc1er units.
Embodiments of the invention are illustrated in the drawings a-ttached hereto, by way of example only, and are explained in greater de-tail hereinafter. In the said drawings:
Figs. 1 to 4 show longi-tudinal sections through four different examp]es oE vessel change-over cars according to the invention;
Fig. 5 shows a longitudinal section through a fifth example of a vessel change-over car according to the inven-tion;
Fig. 6 is a plan view of the car of Fig. 5;
Fig. 7 shows a longitudinal section through a sixth example of a vessel change-over car according to the invention;
Fig. 8 is a plan view of the car of Fig. 7.
Referring to the drawings, wherein like reference numerals indicate like parts, a vessel change-over car l consists of a frame 2 with an inner frame-part 2a and an outer frame-part 2b supported on wheels 3, 4. Car l is adapted to travel on track 5, the width of which is about 4300 mm. In contrast to this, the track-width for known change-over cars is 6200 mm, for example. Inner frame part 2a carries exten-sible pistons 6a, 6b which bear upon surface 7 of the shop floor at the side of the track. Inner frame-part 2a lifts outer frame part 2b. In its lifted position, outer frame part 2b can be adjusted to a new track direction by means of a rotary bearing 8 and a drive which is not necessary to an understanding of the invention and is therefore not shown.
Cylinder lO for piston ll is supported in hub 9 on outer frame part 2b. Cylinder lO and piston ll form a piston-cylinder unit supporting hoisting table 12 through tension members 13 (Fig. l). These members form at least one group consisting of three piston-cylinder units, the cylinders of which, as seen in plan view, are arranged at the corners of a trian~Jle. Ilowe~ve~, g~oups of ~our or more tension members 13 may also be provicle~:~. In cJeneral, a tension member 13 is assoc:iated with edch piston-cylinder uni-t 11 arranged externally of the centre. Each pis-ton-cylinder unit 10, 11 carries a ball-and-socket join-t 1~. In Figs. 1 to 4, this ball-and-socket joint is located on ten~ion members 13~ According ta Fig. 2, a ball-and-socket joint 14a is arranged at the upper end 13a of each tension member 13, while a ball and-socke-t joint 14b is arranged at the lower end 13b of each tension member 13.
According to Fig. 1, these tension members may be designed simultaneously as piston-cylinder units 10, 11 with piston lOa and cylinder lla. In the design according to Fig. 1, both piston 10 in cylinder 11, and piston lOa in cylinder lla, are designed to be acted upon by a pressure fluid.
During the hoisting operation, piston unit 10, 11 is first actuated. When this has reached its maximal height, pistons lOa in cylinders lla are actuated. The total lift is unusually high, as shown in dotted lines 15 ln Fig. 1, but there is no need to dispense with the link-system of tension member 13.
According to Fig. 2, tension members do not perform a dual function, i.e. they do not act simultaneously as tension-rods and piston-cylinder units; instead they are in the form of tension-rods hinged, by means of ball-and-socket joints 14a, 14b, . .
to cross-member 16 of piston-rod llb.
In the case of Fig. 2, piston-cylinder unit 10, 11 con-sists of telescoping piston-cylinder unit 10, 11, 17, piston 11 acting in cylinder 17 as an initial hoisting stage. During the second hoisting stage, the outside of cylinder 17 forms the piston itself in cylinder 10.
In the design according to Fig. 3, piston 10 in cylinder 11 is the sole hoisting means. Tension members 13 are in the form of bars or tubes.
9~3~
The desiyn according to Fig. 4 provides a guide column 18 and a guide housing 19 acting merely as vertic~l guides;
they are not supplied with pressure Eluid. The hoisting devices consist of pistons lOa and cylinders lla acting simultaneously as tension members 13.
~11 piston-cylinder units 10, 11 and lOa, lla are located upon approximately a circle corresponding to an approximately circular surface 20 (Fig. 5) of vertical vessel 21. This arrangement, which is basically disadvantageous for the operating and s~ructural height o~ hoisting table 12, is compensated for by two intermediate members 22 (22a, 22b) extending downwardly from the said hoisting table. In change-over cars of extremely low structural height, intermediate members 22 project into recesses 23 in inner frame-part 2a, and are rigidly attached to hoistiny table 12.
The term "hoisting table" is to be understood to mean all supports upon which the vessel rests during change-over or transporting. Thus the "hoisting table" may be in the form of an annular support, i.e. it may consist of an infinite number of support points (Figs. 1 to 4), of four supports (Figs. 5 and 6), or of at least three supports (Figs. 7 and 8). In Figs. 1 to 4, the supports are in the form of rings upon which are arranged supports 24a or short-lift piston-cylinder units 24b.
The latter make it possible to carry out additional hoisting movements in all directions, in order to adapt vessel 21 to major inaccuracies in its retainer.
Intermediate members 22 are in the form of supports 22a, 22b, at the lower ends of which are locatea ball-and-sccket ~c;rts ~4b of tension m~mher~ 13 .~llnnnrts 22. ~en~r~ing tn Figs. 7 and 8, are in the form of forks 25, in spaces 25a, 25b of which piston-cylinder units lOa, lla are arranged in a space-savlng manner.
In contrast to ~he desicJns according to Figs. 1 to 4, outer frame part 2b carries inclividually arranged piston-cy]inder units 10, 11. Located within ~oint hous:ing 14c is a further ball-ancl-socket joint 14, not shown, connected to piston-rod lOc of piston-cylinder unit 10, 11, the connection being substantially in the form of a ring which prevents the ball from falling out. Joint housing 15c rests upon the said ball. Tension members 13 are hinged as described hereinbefore.
Ends 13a, 13b constitute, with ball-and-socket joints 14a, 14b, the connections to intermediate members 22 consisting of U-frames 22c, the latter forming a downwardly-open hcusing 26.
The latter surrounds joint housing 14a with a certain amount of play 27, i.e. an annular gap exists between U-frame 22c and joint housing 14c, allowing displacement of the said U-frame.
The displacement of the four U-frames 22c takes place jointly, since all of the said U-frames are connected rigidly together by means of bars 28a, 28b, 28c and 28d, thus producing an adaptable hoisting table 12.
In Fig. 5, the sides to the left and right of axis of symmetry 29 are shown in the raised position (left) and in the lowered position (right). In the arrangement of piston-cylinders units lOa, lla according to Fig. 6 (and acçording to Fig. 8 also), access apertures 30a, 30b are arranged on longitudinal sides la, lb of the car.
As already mentioned, hoisting table 12 may be annular (Figs. 7, 8) and may be bent and extend downwardly. In this case, a car of extremely low structural height may be achieved by means of recesses 23 provided in outer frame part 2b. As ind icated in ~igSe 7 and 8 the necessary lifting heiqht of table 12 extends approximately to the level of control chamber 31 (shown in dotted lines). The structural height of the car is thus considerably lower than that of known cars in which the p:is-ton-cy:Linder units projec-t subs-tantially beyond the control chamber.
The vessel change-over car is equipped with drive motors 32 for wheels 3, 4. Iloisting table 12 has lateral access apertures 30a, 30b and work plat:Eorms 33a, 33b.
Ins-tead of piston-cylinder units 10, 11 and lOa, lla, it is also possible to use threaded-shaft-and-nut hoisting means, in which case the necessary reduc-tion gearing, electric motors, and oil motors producing a ro-tary motion, if necessary with universal joints interposed, must be arranged upon outer frame part 2b.
Vessel change-over cars are used to transport ~etal-lurgical vessels, the lining of which has become worn, from the vessel stand to a relini~ s-tand and back again. To this end, the vessel mus-t be released from its retaining ~eans. In steel plants, the said retaining means are in the form of tilting frames, carrier rings~ pivot arms, casting devices, and the like. The vessels are transported on intersec-ting tracks, the chassis of the car being lifted at the track intersection, rotated through 90, and set down upon the other - track. To this end, the car of the present invention makes use of a hoisting piston located at the centre of the car chassis, it being known to provide hoisting pistons located at the ends of the car. The latter, however, must be able to hoist to a considerable height, since the car, with the vessel, must be lifted to the operating position of the said vessel.
Retaining means for metallurgical vessels are of widely varying designs. The retaining means employed in the car of the invention requires a hoisting table which will lift the vessel in guides which have become distorted due to heat or wear.
The hoisting table compensates for this inaccuracy by means of the interposed pivotable joints, preferably ball-and-socket joints, and tension members hinged thereto.
It is known from German Auslegeschrift 20 08 396 to compensate for these inaccuracies by means of individual adjustment of the hoisting table's height and inclination, in that pairs of hoisting devices are arranged at the corners of the rectangular car chassis, the said hoisting devices having universal joints at their ends, to which cylinders are attached, additional universal joints being provided on tension 39~30 members constituting a connection with a bridge carrying the vessel. In this configuration, the tension members may adjust themselves in the form of a parallelogram while the hoisting devices maintain their vertical positions. Al-though the adaptability of the two bridges meets practical requirements, the "bridge" system requires a relatively wide and long change-over car. Thus known change-over cars require a wide rail-track which is abnormal.
It is the purpose of the present invention to provide a transport vehicle or car for metallurgical ves-sels, equipped with hoisting devices for a hoisting table having an articulated mounting, in such a manner that they are compact from the point of view of the arrangement of the hoisting devices and as regards the hinge system for the hoisting table, thus making it possible for the vehicle to be made narrower than heretofore and to run on tracks of normal width. The vehicle is also to be lighter and is to be suitable for small and large metallurgical vessels with minor structural modifications.
The present invention provides a transport vehicle for metallurgical vessels, comprising a carriage frame; rail engaging wheels on said carriage frame; an interior frame rotatably mounted on said carriage frame; ground engaging fluid pressure means on said interior frame for lifting said frame from said rails; a lift table on said vehicle for receiving metallurgical vessels therein; second fluid pressure means on said interior frame for raising and lowering said lift table; means connecting said second fluid pressure means to said lift table, said connecting means including at least one ball-and-socket joint means connected to an articulated stabilizer support means; the improvement characterized by said second fluid pressure means positionedwithin abase support space defined by the B
diameter of a vessel to be supported; said connection means includes a plurality of spaced apart intermediate connection elements in said base support space and rigidly connected to said lift table and extending below said lift table; said stabilizer support means includes a plurality of cooperating stabilizers in said base support space and extending between said second fluid pressure means and said intermediate con-nection elements; the top of each stabilizer support means connected to the top of said fluid pressure means; the bottom of each stabilizer support means connected to the bottom of said cooperating intermediate connection elements;
and said top and bottom connections of said stabilizer sup-port means being said ball-and-socket means. This arrange-ment provides hoisting units located closer to the centre of the change-over car. Although this central arrangement below the vessel results in a very high structure, this problem is overcome, according to the invention, by the use of the said intermediate connection elements. The articu-lated support of these elements in the lower parts of the car or vehicle results in a considerable reduction in its height. It is desirable to use stabilizer support means which are tension members of a cross-section suitable for high tensile forces and which thus contribute to the reduc-tion of the width of the structure. The length of the ten-sion members is a characteristic which increases the adapt-ability of the supports to distorted vessel surfaces.
Longer tension members assist adaptability by increasing the horizontal displaceability of the lift table. By vir-tue of the separation of piston-cylinder units forming the second fluid pressure means from the tension members, the use of relatively small cross sections, and long tension members, the change-over car formed by the transport vehicle of the invention may be made quite compact. This compact 3~) design reduces the width, thus allowing the car to travel on standard steel-plant tracks. Furthermore, the design accor-ding to the invention saves a considerable amount of weight, and it may also be used for both large and small metallurgi-cal vessels.
According to the preferred form of the invention, the intermediate connection elements are in the form of sup-ports extending downwardly from the lift or hoisting table and associated with piston-cylinder hoisting units distri-buted around its periphery. It is desirable for the length of the intermediate connection elements to be approximately equal to that of the intermediate members, thus providing a substantial reduction in structural height. In this case, the load on the intermediate members is a buckling load, wheras the load on the tension members is a tensile load.
The piston-rods of the piston-cylinder units are therefore stressed only in tension. Although such piston-cylinder units have a long travel, they are less expensive and are lighter.
The intermediate connection elements or members may be in the form of forked supports extending downwardly from the hoisting table, with one piston-cylinder unit arranged within each space enclosed by the forks. This arrangement also reduces the structural width of the car.
In another modification, the intermediate members are in the form of U-shaped frames each mounted upon one of the joint housings of the piston-rods. The advantage of this arrangement is that it achieves double-hinging of the hoisting table and doubling of the number of support-points for the hoisting table, which results in still bet-ter adaptability at the contact points when the vessel is installed. The invention assumes that the hoisting table is deformed elastically under the weight of the vessel, B ~
3~
which may amount to some hundreds of tons. The double hin-ging action readily compensates for this deformation.
The adaptability of the hoisting table to the inserts for retaining the vessel may also be improved by using U-frames in the form of downwardly-open housings surrounding the periphery of the joint housing with a cer-tain amount of displacement-play. The independence of individual support-locations may also be increased by join-ing all of the U-frames rigidly together, by means of bars, to form a polygon.
In the case of vessels having retainers on oppo-site sides of their circumferences, it is desirable for the piston-cylinder units, with the intermediate members, to be arranged on the long .
B -4a-~1~9~0 sicles of the c,lr to ~o~ access apertures.
~ccording to still another preferred form of the inven-tion, an arrangement of the ho:is-ting devices and link~system ~!
which reduces the s-tructural width of the car consists in that the upper ends of the hois-ting members, hinged to the inter-mediate members, are hinged to the cross-member of a guide-column arranged ver-tically and centrally between the supports and mounted displaceably in a guide housing. This arrangemen-t reduces the structural width of the car and also provides the desired horizontal displaceability of the hoisting table and its supports over a range of about 30 - 70 mm.
In another preferred configura-tion, the tension members themselves may be in the form of piston-cylinder units, a ball-and socket joint being provided on each cylinder-housing and piston-rod.
The guide column, which is displaceable in a guide housing, may also be in the form of a piston-cylinder unit.
The structural height of the hoisting table may be still further reduced by making the guide-column, which is displace-able in the guide-housing, in the form of a telescopic piston-cylinder unit.
~ For link-systems providing, as with the arrangement described~ horizontal displacement of the hoisting table over only a range of about 30 to 70 mm, and for link-systems accor-iC'C~ /4 f c J
ding to the invention in which dauble~adaptation hinging is considered desirable, provision is made for the supports carrying the metallurgical vessel to be in the form of short-lift piston-cylinder units arranged upon the hoisting table or upon the U-frames associated with the piston-cylinder units.
Finally, extremely low structural height of the change-over car may be achieved by providing the inner frame part with vertical recesses for the downwardly-ex-tending intermediate ~39~30 members of piston-cyl:inc1er units.
Embodiments of the invention are illustrated in the drawings a-ttached hereto, by way of example only, and are explained in greater de-tail hereinafter. In the said drawings:
Figs. 1 to 4 show longi-tudinal sections through four different examp]es oE vessel change-over cars according to the invention;
Fig. 5 shows a longitudinal section through a fifth example of a vessel change-over car according to the inven-tion;
Fig. 6 is a plan view of the car of Fig. 5;
Fig. 7 shows a longitudinal section through a sixth example of a vessel change-over car according to the invention;
Fig. 8 is a plan view of the car of Fig. 7.
Referring to the drawings, wherein like reference numerals indicate like parts, a vessel change-over car l consists of a frame 2 with an inner frame-part 2a and an outer frame-part 2b supported on wheels 3, 4. Car l is adapted to travel on track 5, the width of which is about 4300 mm. In contrast to this, the track-width for known change-over cars is 6200 mm, for example. Inner frame part 2a carries exten-sible pistons 6a, 6b which bear upon surface 7 of the shop floor at the side of the track. Inner frame-part 2a lifts outer frame part 2b. In its lifted position, outer frame part 2b can be adjusted to a new track direction by means of a rotary bearing 8 and a drive which is not necessary to an understanding of the invention and is therefore not shown.
Cylinder lO for piston ll is supported in hub 9 on outer frame part 2b. Cylinder lO and piston ll form a piston-cylinder unit supporting hoisting table 12 through tension members 13 (Fig. l). These members form at least one group consisting of three piston-cylinder units, the cylinders of which, as seen in plan view, are arranged at the corners of a trian~Jle. Ilowe~ve~, g~oups of ~our or more tension members 13 may also be provicle~:~. In cJeneral, a tension member 13 is assoc:iated with edch piston-cylinder uni-t 11 arranged externally of the centre. Each pis-ton-cylinder unit 10, 11 carries a ball-and-socket join-t 1~. In Figs. 1 to 4, this ball-and-socket joint is located on ten~ion members 13~ According ta Fig. 2, a ball-and-socket joint 14a is arranged at the upper end 13a of each tension member 13, while a ball and-socke-t joint 14b is arranged at the lower end 13b of each tension member 13.
According to Fig. 1, these tension members may be designed simultaneously as piston-cylinder units 10, 11 with piston lOa and cylinder lla. In the design according to Fig. 1, both piston 10 in cylinder 11, and piston lOa in cylinder lla, are designed to be acted upon by a pressure fluid.
During the hoisting operation, piston unit 10, 11 is first actuated. When this has reached its maximal height, pistons lOa in cylinders lla are actuated. The total lift is unusually high, as shown in dotted lines 15 ln Fig. 1, but there is no need to dispense with the link-system of tension member 13.
According to Fig. 2, tension members do not perform a dual function, i.e. they do not act simultaneously as tension-rods and piston-cylinder units; instead they are in the form of tension-rods hinged, by means of ball-and-socket joints 14a, 14b, . .
to cross-member 16 of piston-rod llb.
In the case of Fig. 2, piston-cylinder unit 10, 11 con-sists of telescoping piston-cylinder unit 10, 11, 17, piston 11 acting in cylinder 17 as an initial hoisting stage. During the second hoisting stage, the outside of cylinder 17 forms the piston itself in cylinder 10.
In the design according to Fig. 3, piston 10 in cylinder 11 is the sole hoisting means. Tension members 13 are in the form of bars or tubes.
9~3~
The desiyn according to Fig. 4 provides a guide column 18 and a guide housing 19 acting merely as vertic~l guides;
they are not supplied with pressure Eluid. The hoisting devices consist of pistons lOa and cylinders lla acting simultaneously as tension members 13.
~11 piston-cylinder units 10, 11 and lOa, lla are located upon approximately a circle corresponding to an approximately circular surface 20 (Fig. 5) of vertical vessel 21. This arrangement, which is basically disadvantageous for the operating and s~ructural height o~ hoisting table 12, is compensated for by two intermediate members 22 (22a, 22b) extending downwardly from the said hoisting table. In change-over cars of extremely low structural height, intermediate members 22 project into recesses 23 in inner frame-part 2a, and are rigidly attached to hoistiny table 12.
The term "hoisting table" is to be understood to mean all supports upon which the vessel rests during change-over or transporting. Thus the "hoisting table" may be in the form of an annular support, i.e. it may consist of an infinite number of support points (Figs. 1 to 4), of four supports (Figs. 5 and 6), or of at least three supports (Figs. 7 and 8). In Figs. 1 to 4, the supports are in the form of rings upon which are arranged supports 24a or short-lift piston-cylinder units 24b.
The latter make it possible to carry out additional hoisting movements in all directions, in order to adapt vessel 21 to major inaccuracies in its retainer.
Intermediate members 22 are in the form of supports 22a, 22b, at the lower ends of which are locatea ball-and-sccket ~c;rts ~4b of tension m~mher~ 13 .~llnnnrts 22. ~en~r~ing tn Figs. 7 and 8, are in the form of forks 25, in spaces 25a, 25b of which piston-cylinder units lOa, lla are arranged in a space-savlng manner.
In contrast to ~he desicJns according to Figs. 1 to 4, outer frame part 2b carries inclividually arranged piston-cy]inder units 10, 11. Located within ~oint hous:ing 14c is a further ball-ancl-socket joint 14, not shown, connected to piston-rod lOc of piston-cylinder unit 10, 11, the connection being substantially in the form of a ring which prevents the ball from falling out. Joint housing 15c rests upon the said ball. Tension members 13 are hinged as described hereinbefore.
Ends 13a, 13b constitute, with ball-and-socket joints 14a, 14b, the connections to intermediate members 22 consisting of U-frames 22c, the latter forming a downwardly-open hcusing 26.
The latter surrounds joint housing 14a with a certain amount of play 27, i.e. an annular gap exists between U-frame 22c and joint housing 14c, allowing displacement of the said U-frame.
The displacement of the four U-frames 22c takes place jointly, since all of the said U-frames are connected rigidly together by means of bars 28a, 28b, 28c and 28d, thus producing an adaptable hoisting table 12.
In Fig. 5, the sides to the left and right of axis of symmetry 29 are shown in the raised position (left) and in the lowered position (right). In the arrangement of piston-cylinders units lOa, lla according to Fig. 6 (and acçording to Fig. 8 also), access apertures 30a, 30b are arranged on longitudinal sides la, lb of the car.
As already mentioned, hoisting table 12 may be annular (Figs. 7, 8) and may be bent and extend downwardly. In this case, a car of extremely low structural height may be achieved by means of recesses 23 provided in outer frame part 2b. As ind icated in ~igSe 7 and 8 the necessary lifting heiqht of table 12 extends approximately to the level of control chamber 31 (shown in dotted lines). The structural height of the car is thus considerably lower than that of known cars in which the p:is-ton-cy:Linder units projec-t subs-tantially beyond the control chamber.
The vessel change-over car is equipped with drive motors 32 for wheels 3, 4. Iloisting table 12 has lateral access apertures 30a, 30b and work plat:Eorms 33a, 33b.
Ins-tead of piston-cylinder units 10, 11 and lOa, lla, it is also possible to use threaded-shaft-and-nut hoisting means, in which case the necessary reduc-tion gearing, electric motors, and oil motors producing a ro-tary motion, if necessary with universal joints interposed, must be arranged upon outer frame part 2b.
Claims (13)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A transport vehicle for metallurgical vessels, comprising:
(a) a carriage frame;
(b) rail engaging wheels on said carriage frame;
(c) an interior frame rotatably mounted on said carriage frame;
(d) ground engaging fluid pressure means on said interior frame for lifting said frame from said rails;
(e) a lift table on said vehicle for receiving metallurgical vessels therein;
(f) second fluid pressure means on said interior frame for raising and lowering said lift table;
(g) means connecting said second fluid pressure means to said lift table, said connecting means including at least one ball-and-socket joint means connected to an articulated stabilizer support means; the improvement characterized by (h) said second fluid pressure means positioned within a base support space defined by the diameter of a vessel to be supported;
(i) said connection means includes a plurality of spaced apart intermediate connection elements in said base support space and rigidly connected to said lift table and extending below said lift table;
(j) said stabilizer support means includes a plurality of cooperating stabilizers in said base support space and extending between said second fluid pressure means and said intermediate connection elements;
(k) the top of each stabilizer support means connected to the top of said fluid pressure means;
(l) the bottom of each stabilizer support means connected to the bottom of said cooperating intermediate connection elements; and (m) said top and bottom connections of said stabilizer support means being said ball-and -socket means.
(a) a carriage frame;
(b) rail engaging wheels on said carriage frame;
(c) an interior frame rotatably mounted on said carriage frame;
(d) ground engaging fluid pressure means on said interior frame for lifting said frame from said rails;
(e) a lift table on said vehicle for receiving metallurgical vessels therein;
(f) second fluid pressure means on said interior frame for raising and lowering said lift table;
(g) means connecting said second fluid pressure means to said lift table, said connecting means including at least one ball-and-socket joint means connected to an articulated stabilizer support means; the improvement characterized by (h) said second fluid pressure means positioned within a base support space defined by the diameter of a vessel to be supported;
(i) said connection means includes a plurality of spaced apart intermediate connection elements in said base support space and rigidly connected to said lift table and extending below said lift table;
(j) said stabilizer support means includes a plurality of cooperating stabilizers in said base support space and extending between said second fluid pressure means and said intermediate connection elements;
(k) the top of each stabilizer support means connected to the top of said fluid pressure means;
(l) the bottom of each stabilizer support means connected to the bottom of said cooperating intermediate connection elements; and (m) said top and bottom connections of said stabilizer support means being said ball-and -socket means.
2. The apparatus of Claim 1, further charac-terized by (a) said second fluid pressure means includes a plurality of spaced apart cooperating fluid pressure means with each positioned adjacent one said intermediate connection element.
3. The apparatus of Claim 2, further charac-terized by (a) each said interemediate connection element is fork shaped;
(b) each cooperating second fluid pressure means is positioned within said fork.
(b) each cooperating second fluid pressure means is positioned within said fork.
4. The apparatus of Claim 3, further charac-terized by (a) each said intermediate connection including a yoke-shaped U-frame;
(b) each U-shaped frame being positioned to rest upon said top ball and socket means.
(b) each U-shaped frame being positioned to rest upon said top ball and socket means.
5. The apparatus of Claim 4, further charac-terized by (a) each said ball-and-socket means including a housing; and (b) each yoke-shaped U-frame positioned over said housing with a spacing to allow for play there-between.
6. The apparatus of Claim 4, further charac-terized by (a) a connecting rod extending between each said U-frame; and (b) said connecting rods fixed at each end thereof to the said adjacent U-frame.
7. The apparatus of Claim 2, further charac-terized by (a) said plurality of spaced apart pressure fluid means and adjacent intermediate connection elements are positioned at each end of said base support space;
(b) whereby access openings are provided at each longitudinal side of said vehicle.
(b) whereby access openings are provided at each longitudinal side of said vehicle.
8. The apparatus of Claim 2, further charac-terized by (a) a vertical guide housing disposed centrally upon said interior frame;
(b) a guide column vertically reciprocal in said guide housing;
(c) a cross rail fixed on the top of said guide column;
(d) said second fluid pressure means forming a part of each said spaced apart stabilizer support means;
and (e) said top ball-and-socket connection is to said cross rail.
(b) a guide column vertically reciprocal in said guide housing;
(c) a cross rail fixed on the top of said guide column;
(d) said second fluid pressure means forming a part of each said spaced apart stabilizer support means;
and (e) said top ball-and-socket connection is to said cross rail.
9. The apparatus of Claim 8, further charac-terized by (a) said guide housing and said guide column are a third fluid pressure means.
10. The apparatus of Claim 9, further charac-terized by (a) said third fluid pressure means is a pres-sure fluid operated telescopic assembly.
11. The apparatus of Claim 1, further charac-terized by (a) a plurality of spaced abutments on said lift table;
(b) said spaced abutments forming the circumfe-rentially arranged bearing receiving surface for metallur-gical vessels placed thereon; and (c) each said spaced abutment is a short-stroke pressure fluid piston-cylinder unit.
(b) said spaced abutments forming the circumfe-rentially arranged bearing receiving surface for metallur-gical vessels placed thereon; and (c) each said spaced abutment is a short-stroke pressure fluid piston-cylinder unit.
12. The apparatus of Claim 6, further charac-terized by (a) said connected together U-frames and con-necting rods forming said lift table.
13. The apparatus of Claim 1, further charac-terized by (a) a plurality of spaced apart vertical reces-ses on said interior frame; and (b) said interior recesses receiving said vertical intermediate connections in the lower position of said lift table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA332,547A CA1109030A (en) | 1979-07-25 | 1979-07-25 | Change-over car for metallurgical vessels, especially steel-plant converters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA332,547A CA1109030A (en) | 1979-07-25 | 1979-07-25 | Change-over car for metallurgical vessels, especially steel-plant converters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1109030A true CA1109030A (en) | 1981-09-15 |
Family
ID=4114788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA332,547A Expired CA1109030A (en) | 1979-07-25 | 1979-07-25 | Change-over car for metallurgical vessels, especially steel-plant converters |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1109030A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115056813A (en) * | 2022-05-12 | 2022-09-16 | 中车唐山机车车辆有限公司 | Flexible process bogie head-supporting fine adjustment mechanism for railway vehicle and process bogie |
-
1979
- 1979-07-25 CA CA332,547A patent/CA1109030A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115056813A (en) * | 2022-05-12 | 2022-09-16 | 中车唐山机车车辆有限公司 | Flexible process bogie head-supporting fine adjustment mechanism for railway vehicle and process bogie |
| CN115056813B (en) * | 2022-05-12 | 2023-06-09 | 中车唐山机车车辆有限公司 | Flexible process bogie bracket fine-tuning mechanism for railway vehicle and process bogie |
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| Date | Code | Title | Description |
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| MKEX | Expiry |