CA1047806A - Apparatus for butting plates during the construction of large containers, especially tanks and silos - Google Patents
Apparatus for butting plates during the construction of large containers, especially tanks and silosInfo
- Publication number
- CA1047806A CA1047806A CA257,118A CA257118A CA1047806A CA 1047806 A CA1047806 A CA 1047806A CA 257118 A CA257118 A CA 257118A CA 1047806 A CA1047806 A CA 1047806A
- Authority
- CA
- Canada
- Prior art keywords
- carriage
- beams
- cross member
- plates
- butted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Handcart (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
An apparatus for butting plates, comprising a U
structure which runs on the edge of the plate to be butted, and supports means for clamping and making coplanar the edges to be welded together.
An apparatus for butting plates, comprising a U
structure which runs on the edge of the plate to be butted, and supports means for clamping and making coplanar the edges to be welded together.
Description
The present invention relates to an apparatus for butting plates during the construction of large containers, such as tanks and silos.
In mechanical workshops in which large-size containers such as silos or tanks, are constructed, the assembly of the various courses of rolled plates is known as being extremely difficult and complicated.
Such assembly requires the use of large numbers of personnel who have to keep the edges of the plates joined and butted while further personnel spot weld the plates together, prior to subsequently completing the welds.
This operation is extremely dangerous because the plates are particularly heavy, and the initial fixing together of the plates is done by inadequate means such as self-locking grips or clamps. Moreover, the danger increases as the work progresses, as the various operations are carried out several times at ever increasing heights.
The object of the present invention is to provide an apparatus for butting plates which offers a rational, simple and safe type of construction and thus eliminates the aforementioned disadvantages.
This object is achieved with an apparatus comprising an inverted U-shaped structure to be rested on the upper edges of the plates to be butted; at least two running wheels fixed to the structure under the top thereof, said wheels affording said structure to slide on the upper edges of the plate to be butted while remaining in a vertical position, and height-adjustable means mounted on and movable along a leg of the U-shaped struc-ture for clamping against the other leg of the U-shaped structure the edges of the plates to be butted.
Preferably, the inverted U-shaped structure may - 1 - ~.~
~ , .
1~478(~6 comprise a horizontal cross m~mber from the center of the lower side of which e~tend downwardly four I-shaped beams perpendicular to the cross member and disposed in such a manner as to define two mutually perpendicular, vertical slots, the free ends of said four beams being connected individually to said cross member by stiffening tubes.
When viewed from the front, the structure then is of T-shape.
These beams are conveniently spaced apart to define two vertical slots, in one of which are positioned the two edges of the plates to be joined, said edges being spo-t welded through the second slot. The structure, as defined, can slide on the upper edges of the plates to be joined by means of two convenient grooved wheels. A suitably counterweighted carriage, slidable vertically and provlded with a convenient screw or hydraulic jack, is disposed between two beams parallel to the plate to be welded.
Lowerly, the structure may support means for constraining it to the lower plates when the lateral edges are being spot welded and the carriage is moved in a vertical direction. The particular construction of the apparatus allows both the vertical and the horizontal edges to be spot welded, as it can slide in said two orthogonal directions.
In operation, the apparatus according to the invention permits rapid and precise butting of the plates without danger, and with a very limited personnel requirement.
Further constructional merits and operational characte-ristics of the invention will be more evident from the detailed description given hereinafter by way of non-limiting example, with reference to the accompanying drawings in which:
Figure 1 is a front view of an embodiment of apparatus according to the invention.
A
1~)47806 Figure 2 is a side view of the apparatus of Figure 1.
Figure 3 is a perspective view of the apparatus of F igure 1.
The apparatus shown in the figures comprises an horizontal cross member 1 having an I-shaped cross-section, on the upper surface of which is fixed a lifting handle
In mechanical workshops in which large-size containers such as silos or tanks, are constructed, the assembly of the various courses of rolled plates is known as being extremely difficult and complicated.
Such assembly requires the use of large numbers of personnel who have to keep the edges of the plates joined and butted while further personnel spot weld the plates together, prior to subsequently completing the welds.
This operation is extremely dangerous because the plates are particularly heavy, and the initial fixing together of the plates is done by inadequate means such as self-locking grips or clamps. Moreover, the danger increases as the work progresses, as the various operations are carried out several times at ever increasing heights.
The object of the present invention is to provide an apparatus for butting plates which offers a rational, simple and safe type of construction and thus eliminates the aforementioned disadvantages.
This object is achieved with an apparatus comprising an inverted U-shaped structure to be rested on the upper edges of the plates to be butted; at least two running wheels fixed to the structure under the top thereof, said wheels affording said structure to slide on the upper edges of the plate to be butted while remaining in a vertical position, and height-adjustable means mounted on and movable along a leg of the U-shaped struc-ture for clamping against the other leg of the U-shaped structure the edges of the plates to be butted.
Preferably, the inverted U-shaped structure may - 1 - ~.~
~ , .
1~478(~6 comprise a horizontal cross m~mber from the center of the lower side of which e~tend downwardly four I-shaped beams perpendicular to the cross member and disposed in such a manner as to define two mutually perpendicular, vertical slots, the free ends of said four beams being connected individually to said cross member by stiffening tubes.
When viewed from the front, the structure then is of T-shape.
These beams are conveniently spaced apart to define two vertical slots, in one of which are positioned the two edges of the plates to be joined, said edges being spo-t welded through the second slot. The structure, as defined, can slide on the upper edges of the plates to be joined by means of two convenient grooved wheels. A suitably counterweighted carriage, slidable vertically and provlded with a convenient screw or hydraulic jack, is disposed between two beams parallel to the plate to be welded.
Lowerly, the structure may support means for constraining it to the lower plates when the lateral edges are being spot welded and the carriage is moved in a vertical direction. The particular construction of the apparatus allows both the vertical and the horizontal edges to be spot welded, as it can slide in said two orthogonal directions.
In operation, the apparatus according to the invention permits rapid and precise butting of the plates without danger, and with a very limited personnel requirement.
Further constructional merits and operational characte-ristics of the invention will be more evident from the detailed description given hereinafter by way of non-limiting example, with reference to the accompanying drawings in which:
Figure 1 is a front view of an embodiment of apparatus according to the invention.
A
1~)47806 Figure 2 is a side view of the apparatus of Figure 1.
Figure 3 is a perspective view of the apparatus of F igure 1.
The apparatus shown in the figures comprises an horizontal cross member 1 having an I-shaped cross-section, on the upper surface of which is fixed a lifting handle
2 in a substantially central position.
Two pairs of plate webs 3, h~ving substantially of trapezium shape, are located in said central position between the flanges of the horizontal plates of the cross member 1, and project perpendicularly to and outwardly of said cross member 1.
The outer lower corners of the webs-3 have a suitable hole in which a short pin 4 is located and joins each pair of webs 3. A grooved wheel 5 is idly mounted on said pin 4 between each pair of webs 3.
A second grooved wheel 5 is located between the pair of webs 3 opposite the former pair, in such a manner that the line joining the deepest points of the respective grooves of the wheels 5 is at a level lower than the lower face of the cross member 1, and is perpendicular to the longitudinal axis of this latter.
Four I-shaped beams 6 branch from a central position on the lower surface of the cross member 1 and perpendicular thereto, with their webs substantially parallel to the longitu-dinal axis of the cross member 1.
The ends of the cross member 1 are conveniently connected to the free ends of the beams 6 by four stiffening tubes i.
The beams 6 are disposed in such a manner as to define two vertical slots 8 and 9, which are parallel to each other and substantially perpendicular to the cross member 1.
A carriage 10 is located between the two beams 6 disposed parallel to the slot 8, and supports two lateral appendices which 104'78~
are inserted into the channels defined by said -two beams 6 so that the carriage 10 can slide verlically over the entire length of said beams 6.
An hydraulic ;ack 11 operated by the lever 12 is located with in the carriage 10, from which emerges a foot 13 perpendicularly insertable into the slot 8.
The carriage 10 is counterbalanced by a metal weight 14 which slides in the outer channel of one of the beams 6 between which the carriage 10 is located.
The carriage 10 is connected to the counterweight 14 by a cable 15 supported by an idle pulley 16 suitably supported by a rod branching from the web of the cross member 1.
The two beams 6 between which the carriage 10 is located are connected at their lower ends by a rectangular plate 17 external to the slot 8. A threaded shaft 18 operated by a handweel 19 screws into the centre of said rectangular plate 17.
A seconde plate 20 in a position opposite said plate 17 connects together the pair of beams 6 opposing the above mentioned pair of beams 6.
The operation of the apparatus is as follows.
When a large-size container is to be constructed by assembling several flat or rolled plates disposed in different rows one above the other, the plates of the first row are joined together in the usual manner. The first plate of the upper row is then joined to said first row. At this point, the apparatus is lifted by the handle 2 and is rested on the upper edge of said first plate so that the grooved wheels 5 lie on said edge, with said plate positioned in the slot 8 of the apparatus. The lower edge of a second plate is now rested on the upper edge of the underlying row, and the lateral edges of the two plates of the second row are brought together.
The apparatus is slid on the upper edges of said two ~ .
:: ~
1~478~i plates until the two lateral edges to be joined together are substantially in the centre of the slot 9.
At this point the apparatus is constrained to the lower row by means of the shaft 18, so that it can no longer slide.
Starting with the carriage 10 at the upper end of the lateral edges to be joined, the lever 12 of the jack ll is operated to eject the foot 13 which thrusts the two edges of the plates against the two beams 6 which lie opposite the pair of beams 6 on which the carriage 10 slides.
- The two plates are then easily spot welded together through the free end of the slot 9.
The jack ll is operated to release the carriage 10, which is slid into a second lower position where it is again locked and further spot welds are made.
The spot welding of the edges is carried out at any desired pitch, as the carriage 10, which is counterbalanced by the counterweight 14, is easily moved and locked into any desired position.
After spot welding the lateral edges, the apparatus is released from the lower row by unscrewing the shaft 18 with the handwheel l9.
The carriage 10 now lies at the lower edge of the plate to be joined, and the lower edge can then be spot welded to the upper edge of the lower row in the manner heretofore described by sliding the apparatus on the upper edge of said plate.
On completing the vertical and horizontal spot welding, the apparatus is slid into a neutral region and the previously spot-welded edges are then completely welded.
On completing this welding, a further plate is plated on the lower row, the apparatus is returned, and the cycle of operations is repeated as heretofore described on this plate and ~, 1~4780~i on the subsequent plates of the same row and subsequent rows.
The invention is not lim:ited to the single embodiment heretofore described, and modifications and improvements may be made thereto without leaving the scope of the inventive idea, the fundamental characteristics of which are summarized in the following claims.
A
Two pairs of plate webs 3, h~ving substantially of trapezium shape, are located in said central position between the flanges of the horizontal plates of the cross member 1, and project perpendicularly to and outwardly of said cross member 1.
The outer lower corners of the webs-3 have a suitable hole in which a short pin 4 is located and joins each pair of webs 3. A grooved wheel 5 is idly mounted on said pin 4 between each pair of webs 3.
A second grooved wheel 5 is located between the pair of webs 3 opposite the former pair, in such a manner that the line joining the deepest points of the respective grooves of the wheels 5 is at a level lower than the lower face of the cross member 1, and is perpendicular to the longitudinal axis of this latter.
Four I-shaped beams 6 branch from a central position on the lower surface of the cross member 1 and perpendicular thereto, with their webs substantially parallel to the longitu-dinal axis of the cross member 1.
The ends of the cross member 1 are conveniently connected to the free ends of the beams 6 by four stiffening tubes i.
The beams 6 are disposed in such a manner as to define two vertical slots 8 and 9, which are parallel to each other and substantially perpendicular to the cross member 1.
A carriage 10 is located between the two beams 6 disposed parallel to the slot 8, and supports two lateral appendices which 104'78~
are inserted into the channels defined by said -two beams 6 so that the carriage 10 can slide verlically over the entire length of said beams 6.
An hydraulic ;ack 11 operated by the lever 12 is located with in the carriage 10, from which emerges a foot 13 perpendicularly insertable into the slot 8.
The carriage 10 is counterbalanced by a metal weight 14 which slides in the outer channel of one of the beams 6 between which the carriage 10 is located.
The carriage 10 is connected to the counterweight 14 by a cable 15 supported by an idle pulley 16 suitably supported by a rod branching from the web of the cross member 1.
The two beams 6 between which the carriage 10 is located are connected at their lower ends by a rectangular plate 17 external to the slot 8. A threaded shaft 18 operated by a handweel 19 screws into the centre of said rectangular plate 17.
A seconde plate 20 in a position opposite said plate 17 connects together the pair of beams 6 opposing the above mentioned pair of beams 6.
The operation of the apparatus is as follows.
When a large-size container is to be constructed by assembling several flat or rolled plates disposed in different rows one above the other, the plates of the first row are joined together in the usual manner. The first plate of the upper row is then joined to said first row. At this point, the apparatus is lifted by the handle 2 and is rested on the upper edge of said first plate so that the grooved wheels 5 lie on said edge, with said plate positioned in the slot 8 of the apparatus. The lower edge of a second plate is now rested on the upper edge of the underlying row, and the lateral edges of the two plates of the second row are brought together.
The apparatus is slid on the upper edges of said two ~ .
:: ~
1~478~i plates until the two lateral edges to be joined together are substantially in the centre of the slot 9.
At this point the apparatus is constrained to the lower row by means of the shaft 18, so that it can no longer slide.
Starting with the carriage 10 at the upper end of the lateral edges to be joined, the lever 12 of the jack ll is operated to eject the foot 13 which thrusts the two edges of the plates against the two beams 6 which lie opposite the pair of beams 6 on which the carriage 10 slides.
- The two plates are then easily spot welded together through the free end of the slot 9.
The jack ll is operated to release the carriage 10, which is slid into a second lower position where it is again locked and further spot welds are made.
The spot welding of the edges is carried out at any desired pitch, as the carriage 10, which is counterbalanced by the counterweight 14, is easily moved and locked into any desired position.
After spot welding the lateral edges, the apparatus is released from the lower row by unscrewing the shaft 18 with the handwheel l9.
The carriage 10 now lies at the lower edge of the plate to be joined, and the lower edge can then be spot welded to the upper edge of the lower row in the manner heretofore described by sliding the apparatus on the upper edge of said plate.
On completing the vertical and horizontal spot welding, the apparatus is slid into a neutral region and the previously spot-welded edges are then completely welded.
On completing this welding, a further plate is plated on the lower row, the apparatus is returned, and the cycle of operations is repeated as heretofore described on this plate and ~, 1~4780~i on the subsequent plates of the same row and subsequent rows.
The invention is not lim:ited to the single embodiment heretofore described, and modifications and improvements may be made thereto without leaving the scope of the inventive idea, the fundamental characteristics of which are summarized in the following claims.
A
Claims (8)
1. An apparatus for butting plates during the construc-tion of large containers, comprising an inverted U-shaped structure to be rested on the upper edges of the plates to be butted, at least two running wheels fixed to the structure under the top thereof, said wheels affording said structure to slide on the upper edges of the plates to be butted while remaining in a vertical position, and height-adjustable means mounted on and movable along a leg of the U-shaped structure for clamping against the other leg of the V-shaped structure the edges of the plates to be butted.
2. An apparatus as claimed in claim 1, wherein the inverted U-shaped structure comprises an horizontal cross member from the center of the lower side of which extend downwardly four I-shaped beams perpendicular to the cross member and disposed in such a manner as to define two mutually perpendicular vertical slots, the free ends of said four beams being connected individually to said cross member by stiffening tubes.
3. An apparatus as claimed in claim 2, wherein the running wheels are supported by two pairs of plate webs branching perpendicularly from and in opposite directions with respect to said cross-member, substantially at the centre of the vertical slot perpendicular to said cross member.
4. An apparatus as claimed in claim 3, wherein the height adjustable means comprises a carriage supporting a jack, said carriage being located within the vertical slot parallel to the cross member, and two lateral appendices branching from the carriage for positioning the same in the channels defined by the vertical beams so that said carriage may slide vertically and be constrained horizontally.
5. An apparatus as claimed in claim 4, wherein the carriage is connected by a cable to a counterweight which slides in the outer channel of one of the beams positioning the carriage.
6. An apparatus as claimed in claim 5, wherein the cable which connects the carriage to the counterweight is supported by an idle pulley fixed to the cross member.
7. An apparatus as claimed in claim 6, wherein the two beams positioning the carriage are connected together at their lower ends by a rectangular plate into which is screwed a threaded shaft operated by a handwheel.
8. An apparatus as claimed in claim 8, wherein the lower ends of the two beams which lie opposite the two beams positioning the carriage are connected together by a suitable rectangular plate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT4682376A IT1059386B (en) | 1976-02-16 | 1976-02-16 | Plates butting device for tank or silo assembly - has wheeled inverted U=shaped structure rested on upper edges of plates |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1047806A true CA1047806A (en) | 1979-02-06 |
Family
ID=11259225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA257,118A Expired CA1047806A (en) | 1976-02-16 | 1976-07-16 | Apparatus for butting plates during the construction of large containers, especially tanks and silos |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA1047806A (en) |
| IT (1) | IT1059386B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114434101A (en) * | 2022-01-21 | 2022-05-06 | 广东科能工程管理有限公司 | Split welding method for steel cone hopper of charging bin |
-
1976
- 1976-02-16 IT IT4682376A patent/IT1059386B/en active
- 1976-07-16 CA CA257,118A patent/CA1047806A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114434101A (en) * | 2022-01-21 | 2022-05-06 | 广东科能工程管理有限公司 | Split welding method for steel cone hopper of charging bin |
| CN114434101B (en) * | 2022-01-21 | 2022-11-29 | 广东科能工程管理有限公司 | Split welding method for steel cone bucket of charging barrel bin |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1059386B (en) | 1982-05-31 |
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