EP0447382A1 - Clamp for metal bars - Google Patents

Clamp for metal bars Download PDF

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Publication number
EP0447382A1
EP0447382A1 EP91850046A EP91850046A EP0447382A1 EP 0447382 A1 EP0447382 A1 EP 0447382A1 EP 91850046 A EP91850046 A EP 91850046A EP 91850046 A EP91850046 A EP 91850046A EP 0447382 A1 EP0447382 A1 EP 0447382A1
Authority
EP
European Patent Office
Prior art keywords
claws
lid
pillars
gripping surface
clamp
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.)
Granted
Application number
EP91850046A
Other languages
German (de)
French (fr)
Other versions
EP0447382B1 (en
Inventor
Tord Englund
Staffan Garras
Staffan Lindberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sandvik AB
Original Assignee
Sandvik AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sandvik AB filed Critical Sandvik AB
Publication of EP0447382A1 publication Critical patent/EP0447382A1/en
Application granted granted Critical
Publication of EP0447382B1 publication Critical patent/EP0447382B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/20—Containers, packaging elements or packages, specially adapted for particular articles or materials for incompressible or rigid rod-shaped or tubular articles
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/006—Accessories for drilling pipes, e.g. cleaners

Definitions

  • Metal bars such as rock drill rods, are often shipped in lots comprising a large number of bars of equal size, which one wishes to keep bundled together for simpler handling. This is accomplished with shaped supports of wood or plastics, keeping the bars straight and parallel at such a distance that they do not touch each other.
  • the present invention is a supporting clamp consisting of two parts, which can be adapted to four different bar diameter by positional changes between the parts, and which exerts an elastic pressure on the bars even with undersize diameters within the normal diameter tolerance limits.
  • a supporting clamp according to the invention consists of two differently shaped parts: a base with upwardly pointing claws, and a reversible lid, which can be placed in four different positions by reversing about a horizontal and a vertical axis, corresponding to four different bar diameter.
  • the claws are provided with gripping surfaces to hold the lid in its different positions.
  • FIG. 1 The clamp is further described with reference to figure 1, showing a base, figure 2 showing a lid and figures 3 to 6 showing sections through the clamp with the lid in its four different positions, where a dot helps to illustrate the different lid positions in the figures.
  • the base comprises two side plates (11,12) upwardly extending as a plurality of claws (13,14), where the claws (13) on one side plate (11) are shaped different from the claws (14) on the other side plate (12).
  • the side plates (11,12) are recessed towards the middle and connected by transverse walls (17). Between the claws (13,14) on each side, the side plates are lowered and form supporting contours (18,19).
  • the claws (13,14) are resilient and in their upper parts tapering. Each claw is joined to the side plate by two pillars (24). Below the tapering part each claw has gripping surfaces of different shape facing downwards. On each of the claws (13) of the first side plate (11) there is one upper gripping surface (21) with a width equal to the distance between the pillars (24) and a divided lower gripping surface (20) in two portions each covering the width of one pillar (24). On each of the claws (14) of the second side plate (12) there is one upper gripping surface (23) with a width equal to the full width of the claw (14) and a lower gripping surface (22) which only extends between the pillars (24). On the underside of the base there are two short tongues (25) below each claw (13,14).
  • the lid comprises a central plate (31) with two raised longitudinal ribs (32,33) on each side.
  • the plate (31) is, at least in regions adjoining the claws (13,14) of the base, narrow enough to fit between the claws, and is in this region provided at one edge with tongues (37) each with a width equal to the distance between the pillars (24), and at the other edge with shelves (36) with a width equal to the width of an entire claw (13,14).
  • tongues (37) and shelves (36) are connected by transverse walls (38).
  • the central part (39) of the rib is lower than the rest of the ribs (32,33) and chamfered or rounded.
  • Figure 3 shows a cross-section of the clamp at a pair of claws (13,14) when the lid is in its lowest position to accomodate the smallest diameter bar.
  • the lid is turned so that the tongue (37) and the shelf (36) are located higher than the central plate (31) of the lid, which is supposed to be symmetric with respect to those surfaces of the ribs (32,33) which will press against the bars.
  • the tongue (37) rests against the lower gripping surface (22) between the pillars (24), and the shelf (36) rests against the divided lower gripping surface (20).
  • Figure 4 shows a cross-section at a pair of claws (13,14) where the lid has been reversed about a vertical axis relative to figure 3, with the tongue (37) resting against the upper gripping surface (21) between the pillars (24), and the shelf (36) resting against the full width upper gripping surface (23), placing the lid in its second lowest position.
  • Figure 5 shows a cross-section at a pair of claws (13,14) where the lid has been reversed about a horizontal axis relative to figure 4, causing the central plate (31) of the lid to be located higher than the tongue (37) and the shelf (36).
  • the tongue (37) rests against the lower gripping surface (22) between the pillars (24), and the shelf (36) rests against the divided lower gripping surface (20), placing the lid in its second highest position.
  • Figure 6 shows a cross-section at a pair of claws (13,14) where the lid has been reversed about a vertical axis relative to figure 5, with the tongue (37) resting against the upper gripping surface (21) between the pillars (24), and the shelf (36) resting against the upper full width gripping surface (23), placing the lid in its highest position, accomodating the largest diameter bar.
  • the clamp is applied to the metal bars, which may have round or hexagonal section, by placing the bars on the supporting edges (18,19) of the side plates (11,12) of the base.
  • the tongues (37) of the lid are then inserted below the gripping surface (21,22) between the pillars (24) of the claws (13,14) of that side plate which corresponds to the pertinent diameter, followed by pressing down that edge of the lid which carries the shelves (36) until the shelves (36) rest under the gripping surfaces of the claws of the other side plate.
  • the invention has been described with application to round or hexagonal bars, but by suitably shaping the supporting edges (18,19) it can be adapted to any type of bar, or to two or more bars between neighbouring pairs of claws.
  • the number of claws or bars in a layer is not restricted to what is shown in the figures.
  • the clamps can also be used for bar-shaped items of other or composite materails, such as electric cables.
  • Suitable material for the clamps is a synthetic resin with or without fiber reinforcement, since this ensures a suitable resilience of the pillars (24) of the claws.
  • the described embodiment with gripping surfaces (20,21,22,23) in two levels and unsymmetric tongues (37) and shelves (36) has four different lid positions. It is within the scope of the invention to utilize only two positions by putting all gripping surfaces in one level, or by omitting one reversing possibility of the lid, or to utilize more than four positions by combining a choice of bases and lids..

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Clamps And Clips (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Abstract

A clamp for a plurality of bar-shaped items, comprising a base with upwardly pointing claws (13,14) having gripping surfaces (20,21) and a lid which can be held by the claws (13,14) in at least two positions at different levels above the base, where each level corresponds to a certain diameter of the item, and where one position is changed to another by reversing the lid about a vertical or horizontal axis.

Description

    Field of use
  • Metal bars, such as rock drill rods, are often shipped in lots comprising a large number of bars of equal size, which one wishes to keep bundled together for simpler handling. This is accomplished with shaped supports of wood or plastics, keeping the bars straight and parallel at such a distance that they do not touch each other.
  • Previously known designs, shown by the patents SE 454 266, DE 31 28 345 and EP 071 163 suffer from certain drawbacks in use, such as being useable for one diameter only, and having a limited elasticity which makes it difficult to fit to a slightly oversize diameter bar, and which necessitates special friction means to keep slightly undersize diameter bars axially fixed.
  • The present invention is a supporting clamp consisting of two parts, which can be adapted to four different bar diameter by positional changes between the parts, and which exerts an elastic pressure on the bars even with undersize diameters within the normal diameter tolerance limits.
    • Description of the invention
  • A supporting clamp according to the invention consists of two differently shaped parts: a base with upwardly pointing claws, and a reversible lid, which can be placed in four different positions by reversing about a horizontal and a vertical axis, corresponding to four different bar diameter. The claws are provided with gripping surfaces to hold the lid in its different positions.
  • The clamp is further described with reference to figure 1, showing a base, figure 2 showing a lid and figures 3 to 6 showing sections through the clamp with the lid in its four different positions, where a dot helps to illustrate the different lid positions in the figures.
  • The base comprises two side plates (11,12) upwardly extending as a plurality of claws (13,14), where the claws (13) on one side plate (11) are shaped different from the claws (14) on the other side plate (12). Below the claws (13,14) the side plates (11,12) are recessed towards the middle and connected by transverse walls (17). Between the claws (13,14) on each side, the side plates are lowered and form supporting contours (18,19).
  • The claws (13,14) are resilient and in their upper parts tapering. Each claw is joined to the side plate by two pillars (24). Below the tapering part each claw has gripping surfaces of different shape facing downwards. On each of the claws (13) of the first side plate (11) there is one upper gripping surface (21) with a width equal to the distance between the pillars (24) and a divided lower gripping surface (20) in two portions each covering the width of one pillar (24). On each of the claws (14) of the second side plate (12) there is one upper gripping surface (23) with a width equal to the full width of the claw (14) and a lower gripping surface (22) which only extends between the pillars (24). On the underside of the base there are two short tongues (25) below each claw (13,14).
  • The lid comprises a central plate (31) with two raised longitudinal ribs (32,33) on each side. The plate (31) is, at least in regions adjoining the claws (13,14) of the base, narrow enough to fit between the claws, and is in this region provided at one edge with tongues (37) each with a width equal to the distance between the pillars (24), and at the other edge with shelves (36) with a width equal to the width of an entire claw (13,14). Between tongues (37) and shelves (36) the ribs are connected by transverse walls (38). At the ends (40) of the lid the central part (39) of the rib is lower than the rest of the ribs (32,33) and chamfered or rounded.
  • Figure 3 shows a cross-section of the clamp at a pair of claws (13,14) when the lid is in its lowest position to accomodate the smallest diameter bar. The lid is turned so that the tongue (37) and the shelf (36) are located higher than the central plate (31) of the lid, which is supposed to be symmetric with respect to those surfaces of the ribs (32,33) which will press against the bars. The tongue (37) rests against the lower gripping surface (22) between the pillars (24), and the shelf (36) rests against the divided lower gripping surface (20).
  • Figure 4 shows a cross-section at a pair of claws (13,14) where the lid has been reversed about a vertical axis relative to figure 3, with the tongue (37) resting against the upper gripping surface (21) between the pillars (24), and the shelf (36) resting against the full width upper gripping surface (23), placing the lid in its second lowest position.
  • Figure 5 shows a cross-section at a pair of claws (13,14) where the lid has been reversed about a horizontal axis relative to figure 4, causing the central plate (31) of the lid to be located higher than the tongue (37) and the shelf (36). The tongue (37) rests against the lower gripping surface (22) between the pillars (24), and the shelf (36) rests against the divided lower gripping surface (20), placing the lid in its second highest position.
  • Figure 6 shows a cross-section at a pair of claws (13,14) where the lid has been reversed about a vertical axis relative to figure 5, with the tongue (37) resting against the upper gripping surface (21) between the pillars (24), and the shelf (36) resting against the upper full width gripping surface (23), placing the lid in its highest position, accomodating the largest diameter bar.
  • The clamp is applied to the metal bars, which may have round or hexagonal section, by placing the bars on the supporting edges (18,19) of the side plates (11,12) of the base. The tongues (37) of the lid are then inserted below the gripping surface (21,22) between the pillars (24) of the claws (13,14) of that side plate which corresponds to the pertinent diameter, followed by pressing down that edge of the lid which carries the shelves (36) until the shelves (36) rest under the gripping surfaces of the claws of the other side plate.
  • When a first layer of bars have been joined by the two parts of the first clamps, one can put bases of new clamps on top of the lids of the first clamps, where the uppermost parts of the claws (13,14) of the first clamps fit into the recessed parts (15,16) of the side plates (11,12) of the new bases, and the short tongues (25) on the underside of the new bases fit on both sides of the connecting walls (38) of the first lids. This secures the clamps to each other, and many layers of bars can be put on top of each other.
  • If it is desired to place the first layer of bars somewhat higher above the floor to facilitate handling with a fork lift truck, extra lids are placed under the first clamps. The lids are then located by the short tongues (25). All layers of bars and the extra lids if any can be strapped together with strong metal or synthetic straps pulled lengthwise under the lowest clamp part and tightened on top of the uppermost clamp part. The straps are prevented from catching on obstacles by being recessed in the connecting walls (38) and the central parts (39) of the ends of the lids. The rounding of the central parts (39) allows some slipping of the straps which facilitates tightening and avoids fracture of the straps at the corners.
  • The invention has been described with application to round or hexagonal bars, but by suitably shaping the supporting edges (18,19) it can be adapted to any type of bar, or to two or more bars between neighbouring pairs of claws. The number of claws or bars in a layer is not restricted to what is shown in the figures. The clamps can also be used for bar-shaped items of other or composite materails, such as electric cables.
  • Most suitable material for the clamps is a synthetic resin with or without fiber reinforcement, since this ensures a suitable resilience of the pillars (24) of the claws.
  • The described embodiment with gripping surfaces (20,21,22,23) in two levels and unsymmetric tongues (37) and shelves (36) has four different lid positions. It is within the scope of the invention to utilize only two positions by putting all gripping surfaces in one level, or by omitting one reversing possibility of the lid, or to utilize more than four positions by combining a choice of bases and lids..

Claims (6)

  1. Clamp for a plurality of bar-shaped items, comprising a base with upward-pointing claws (13,14) and a reversible lid which can be gripped and held by gripping surfaces on the claws, characterized by having each claw connected to the base by two pillars (24) and shaped with one gripping surface (21,22) between the pillars and one gripping surface (20,23) extending over the full width of the claw with or without interruption.
  2. Clamp according to claim 1, characterized by having the lid provided with narrow tongues (37) resting against gripping surfaces (21,22) between the pillars (24) and wide shelves (36) resting against gripping surfaces (20,23) extending over the width of the claws.
  3. Clamp according to claim 2, characterized in having the tongues (37) and the shelves (36) located on one side of a plane central between those surfaces of the lid which can press against the items.
  4. Clamp according to claim 1, characterized by the gripping surface (21) between the pillars (24) of the claws (13) on the first side being located at a higher level than that gripping surface (20) which extends over the width of the claw (13) with an interruption, and by the gripping surface (22) between the pillars (24) of the claws (14) of the other side being located at a lower level than that gripping surface (23) which extends over the width of the claw (14).
  5. Clamp according to claim 3 or 4,
    characterized by the tongues (37) and shelves (36) of the lid matching the gripping surfaces (20,21,22,23) of the claws with the lid in at least two different positions, where one position is changed to the other by reversing 180 degrees about a vertical or horizontal axis.
  6. Clamp according to claim 3 or 4,
    characterized by the tongues (37) and shelves (36) of the lid matching the gripping surfaces (20,21,22,23) of the claws with the lid in at least two positions at different levels above the base.
EP19910850046 1990-03-16 1991-02-26 Clamp for metal bars Expired - Lifetime EP0447382B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9000953 1990-03-16
SE9000953A SE500833C2 (en) 1990-03-16 1990-03-16 Holder for a plurality of metal bars

Publications (2)

Publication Number Publication Date
EP0447382A1 true EP0447382A1 (en) 1991-09-18
EP0447382B1 EP0447382B1 (en) 1994-02-16

Family

ID=20378888

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910850046 Expired - Lifetime EP0447382B1 (en) 1990-03-16 1991-02-26 Clamp for metal bars

Country Status (5)

Country Link
EP (1) EP0447382B1 (en)
CA (1) CA2038111A1 (en)
DE (1) DE69101165T2 (en)
ES (1) ES2049540T3 (en)
SE (1) SE500833C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772438A1 (en) * 1997-12-15 1999-06-18 Ferco Int Usine Ferrures FIXING STRIP
WO2000043295A1 (en) * 1999-01-23 2000-07-27 Ralph Barclay Ross Cargo handling apparatus
FR3074783A1 (en) * 2017-12-08 2019-06-14 France Fermetures PACKAGING ASSEMBLY FOR BAY TERMINAL DEVICE

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116500198B (en) * 2023-04-26 2024-06-04 西安特科检测研究所有限公司 VOCs detection method and device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071163A2 (en) * 1981-07-22 1983-02-09 Wilfried Dreyfuss Frame for transporting and storing tubes
DE3128345A1 (en) * 1981-07-31 1983-02-10 Nichiei Distribution Systems, Inc., Kawasaki, Kanagawa Device for bundling tubes and similar bodies
SE454266B (en) * 1983-11-23 1988-04-18 Norabel Ab SHOOTING ROOMS FOR STORAGE AND TRANSPORT

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071163A2 (en) * 1981-07-22 1983-02-09 Wilfried Dreyfuss Frame for transporting and storing tubes
DE3128345A1 (en) * 1981-07-31 1983-02-10 Nichiei Distribution Systems, Inc., Kawasaki, Kanagawa Device for bundling tubes and similar bodies
SE454266B (en) * 1983-11-23 1988-04-18 Norabel Ab SHOOTING ROOMS FOR STORAGE AND TRANSPORT

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2772438A1 (en) * 1997-12-15 1999-06-18 Ferco Int Usine Ferrures FIXING STRIP
WO2000043295A1 (en) * 1999-01-23 2000-07-27 Ralph Barclay Ross Cargo handling apparatus
GB2363373A (en) * 1999-01-23 2001-12-19 Ralph Barclay Ross Cargo handling apparatus
GB2363373B (en) * 1999-01-23 2003-11-05 Ralph Barclay Ross Cargo handling apparatus
US6799926B1 (en) 1999-01-23 2004-10-05 Ralph Barclay Ross Cargo handling apparatus
FR3074783A1 (en) * 2017-12-08 2019-06-14 France Fermetures PACKAGING ASSEMBLY FOR BAY TERMINAL DEVICE

Also Published As

Publication number Publication date
DE69101165T2 (en) 1994-06-01
CA2038111A1 (en) 1991-09-17
SE9000953L (en) 1991-09-17
ES2049540T3 (en) 1994-04-16
SE500833C2 (en) 1994-09-12
DE69101165D1 (en) 1994-03-24
EP0447382B1 (en) 1994-02-16
SE9000953D0 (en) 1990-03-16

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