WO2000052343A1 - Clamp - Google Patents
Clamp Download PDFInfo
- Publication number
- WO2000052343A1 WO2000052343A1 PCT/GB2000/000527 GB0000527W WO0052343A1 WO 2000052343 A1 WO2000052343 A1 WO 2000052343A1 GB 0000527 W GB0000527 W GB 0000527W WO 0052343 A1 WO0052343 A1 WO 0052343A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- beam clamp
- clamp
- boss
- rear portion
- drop rod
- Prior art date
Links
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- VMXUWOKSQNHOCA-UKTHLTGXSA-N ranitidine Chemical compound [O-][N+](=O)\C=C(/NC)NCCSCC1=CC=C(CN(C)C)O1 VMXUWOKSQNHOCA-UKTHLTGXSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 229910000742 Microalloyed steel Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2/00—Friction-grip releasable fastenings
- F16B2/02—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening
- F16B2/06—Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B5/00—Clamps
- B25B5/06—Arrangements for positively actuating jaws
- B25B5/10—Arrangements for positively actuating jaws using screws
- B25B5/101—C-clamps
Definitions
- the present invention relates to an improved clamp for attaching structural components such as fixing brackets, pipe supports, electrical conduits or any other such structural component to a structural beam.
- a conventional beam or flange clamp for securing building components to beams comprises a main body which is drilled or tapped at its rear portion in order to secure a drop rod outside and separate to the clamping region by means of rivets or bolts.
- This clamp achieves a direct clamping effect by means of set screws on the front portion. The operation of this device is illustrated schematically in Figure 5 attached hereto and described hereinafter.
- the load bearing characteristics of the conventional clamp are largely unsatisfactory. For example, a load applied to the drop rod exerts a significant disruptive moment about the separate clamping region.
- the present invention is based on the recognition that the clamping characteristics of a beam clamp may be improved by making the drop rod an integral part of the clamping effect.
- the beam clamp of the present invention then has the option to utilise the normal drop rod attachment point for the attachment of additional components.
- the invention therefore represents a versatile device which forms a discrete element of a clamping assembly.
- the present invention provides a beam clamp comprising: two overlapping, substantially C-shaped plates having two arms extending from an arcuate rear portion, wherein adjacent arms on said plates are interconnected by means of a boss, wherein each boss defines a substantially tubular, non- threaded path capable of receiving an elongate fastening means or drop rod.
- One of the advantages of the invention is the versatility of the clamp which adds to its cost effectiveness. It may be used in any number of situations with beams and threaded fasteners having a range of shapes and sizes.
- the beam clamp of the invention may be used effectively on tapered beams which is less than straightforward with a conventional beam clamp.
- the beam clamp of the invention makes the drop rod a load-bearing element acting directly at the clamping region.
- the drop rod is therefore integral to the clamping effect. Loads of up to two thirds of a ton may be applied.
- the rear section of the beam clamp is placed into compression as the clamp is tightened onto the beam and loads are applied to the drop rod.
- the or each substantially C-shaped plate has a non-uniform width.
- the rear portion of the or each substantially C-shaped plate is broader than the arms.
- the width of the or each substantially C-shaped plate increases progressively from the arms to the rear portion.
- the ratio of the plate width at an arm to the plate width at the rear is in the range 0.40 to 0.70, preferably 0.50 to 0.65, particularly preferably 0.55 to 0.60.
- the beam clamp of the invention is hooked straightforwardly onto the edge of a beam (so that the edge of the beam is located in the jaws of the beam clamp) and secured by passing an elongate fastener and / or drop rod through a boss.
- Suitable elongate fasteners are generally threaded fasteners which are fastened with suitable bolts. One or more of these may be used to fasten the beam clamp of the invention to the beam.
- the drop rod may be threaded and fastened to the underside of the beam using suitable bolts.
- the drop rod and/or elongate fastening means are preferably secured by two nuts.
- a twin set screw arrangement on the drop rod and elongate fastener is generally preferred to improve pull-off loads.
- the interior edge of the rear portion of the or each substantially C-shaped plate (i.e. the interior of the jaw) is preferably provided with a flattened portion. This advantageously assists the beam clamp to mate with the edge of a beam in the jaws of the substantially C-shaped plates.
- each boss is collinear.
- the outer and inner edge of the or each boss is tapered or chamfered.
- a tapered or chamfered inner edge advantageously assists clamping to tapered beams.
- each substantially C-shaped plate is parallel.
- the substantially C-shaped plates may be provided with an aperture.
- the aperture is asymmetrically disposed in the rear portion of the substantially C-shaped plate.
- the aperture is situated in the compression zone in the rear portion of the substantially C-shaped plates.
- Ancillary components may be attached through the aperture on the beam clamp.
- swivel means may be conveniently attached which allows an extensive range of articulation in the vertical or horizontal plane.
- the beam clamp of the invention will be made from micro-alloyed steel strip which is optionally electro- zinc plated. More generally, the choice of material appropriate for this purpose will be readily made to the skilled man.
- the present invention provides a clamping assembly for securing a structural component to a beam comprising: a beam clamp as hereinbefore defined; a drop rod insertable through a lower boss of the beam clamp and securable to the underside of the beam; optionally an elongate fastening means insertable through an upper boss of the beam clamp and securable to the upperside of the beam; whereby the drop rod is attachable to said structural component .
- the present invention provides a method for attaching a structural component to a beam comprising the steps of: locating an edge of the beam within the jaws of a beam clamp as hereinbefore defined; inserting a drop rod through the lower boss; impinging the drop rod in a lower secure ent position on the underside of the beam; securing the drop rod in the lower securement position; optionally inserting an elongate fastening means through the upper boss and impinging the elongate fastening means in an upper securement position on the upperside of the beam and securing the elongate fastening means in the upper securement position.
- FIGS. la to d illustrate various views of an embodiment of the beam clamp of the invention
- FIGS 2 and 3 illustrate alternative embodiments of the beam clamp of the invention.
- FIGS 4 illustrate an embodiment of the beam clamp of the invention.
- the beam clamp designated generally by reference numeral 1 comprises two substantially C-shaped parallel plates 2 and 3. Adjacent arms on each substantially C-shaped plate 2 and 3 are interconnected by a non-threaded boss (see 4 and 5) . Each boss defines a substantially tubular path 5a for receiving an elongate fastening means or a drop rod (not shown) .
- the boss 4 is provided with a chamfer 4a.
- the substantially tubular channels in each boss are collinear.
- Each plate is provided with an aperture 6 through which ancillary components may be attached.
- Figures 2 to 4 illustrate the attachment of the beam clamp of the invention 1 to a beam 7 using drop rod 8 as an integral part of the clamping effect.
- drop rod 8 passes through lower boss 5 and impinges the underside of the beam.
- the drop rod is threaded and secured to the underside of the beam by means of two bolts (9a and 9b) above and below the boss 5.
- a fastening bolt 10 is fed through upper boss 4 to impinge on the upperside of the beam 7.
- the fastening bolt 10 is secured by two nuts 11a and lib.
- a fastening bolt 10 is fed through upper boss 4 to impinge upon the upperside of the beam 7.
- the fastening bolt 10 is secured by two nuts 11a and lib.
- the drop rod is secured by means of two nuts 17a and 17b.
- a swivel means 12 is attached to the beam clamp by means of aperture 13 in the rear portion of the substantially C-shaped plates. This gives a degree of articulation forward of the clamp of about 22° (see arrow 14). A degree of articulation in excess of 180° is possible in the vertical plane (see arrow 15) .
- the twin set screw arrangement is used to improve pull off loads when an applied load is 90° to the setscrew axis .
- Figure 5a is provided to illustrate the prior art beam or flange clamp.
- the beam or flange is inserted in jaws 1 and clamped directly by appropriate manipulation of cup point set screw 2 and locking nut 3.
- the rear portion of the main body is provided with a tapped or clear hole 4 for securing a drop rod (not shown) .
- Figure 5b illustrates the use of the beam clamp with an attached J bolt 6 for suspension of pipweork.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00903843A EP1157215A1 (en) | 1999-02-27 | 2000-02-17 | Clamp |
AU25599/00A AU2559900A (en) | 1999-02-27 | 2000-02-17 | Clamp |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9904464.6A GB9904464D0 (en) | 1999-02-27 | 1999-02-27 | Clamp |
GB9904464.6 | 1999-02-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000052343A1 true WO2000052343A1 (en) | 2000-09-08 |
Family
ID=10848575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2000/000527 WO2000052343A1 (en) | 1999-02-27 | 2000-02-17 | Clamp |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1157215A1 (en) |
CN (1) | CN1348531A (en) |
AU (1) | AU2559900A (en) |
GB (1) | GB9904464D0 (en) |
WO (1) | WO2000052343A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2388153A (en) * | 2002-05-02 | 2003-11-05 | Peter Clarence Barton | Clamp |
US10947950B2 (en) | 2016-02-18 | 2021-03-16 | Ntn Corporation | Hydroelectric power generation apparatus |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102200158A (en) * | 2010-03-24 | 2011-09-28 | 富瑞精密组件(昆山)有限公司 | Clamping device |
CN104634549A (en) * | 2013-11-15 | 2015-05-20 | 宝山钢铁股份有限公司 | Apparatus and method of quickly testing performance of two-position three-way electromagnet directional valve |
CN106809601A (en) * | 2015-11-30 | 2017-06-09 | 池州学院 | A kind of scraper plate guider |
CN107521360A (en) * | 2017-07-25 | 2017-12-29 | 芜湖迈特电子科技有限公司 | The fixed structure of lithium battery motor-car charger |
CN107803671A (en) * | 2017-09-25 | 2018-03-16 | 嘉善金亿精密铸件有限公司 | A kind of crosshead for beveler |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2375513A (en) * | 1943-09-30 | 1945-05-08 | William F Bach | Pipe hanger system |
US2659561A (en) * | 1950-10-09 | 1953-11-17 | Orlan C Kindorf | C clamp |
US2678786A (en) * | 1950-10-09 | 1954-05-18 | Orlan C Kindorf | Support for pipe hangers and the like |
DE19748871A1 (en) * | 1996-11-05 | 1998-06-10 | Rene Dick | Support clamp with two parallel clamping arms joined by connecting arm as U=shaped steel part |
-
1999
- 1999-02-27 GB GBGB9904464.6A patent/GB9904464D0/en not_active Ceased
-
2000
- 2000-02-17 AU AU25599/00A patent/AU2559900A/en not_active Abandoned
- 2000-02-17 WO PCT/GB2000/000527 patent/WO2000052343A1/en not_active Application Discontinuation
- 2000-02-17 EP EP00903843A patent/EP1157215A1/en not_active Withdrawn
- 2000-02-17 CN CN 00805445 patent/CN1348531A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2375513A (en) * | 1943-09-30 | 1945-05-08 | William F Bach | Pipe hanger system |
US2659561A (en) * | 1950-10-09 | 1953-11-17 | Orlan C Kindorf | C clamp |
US2678786A (en) * | 1950-10-09 | 1954-05-18 | Orlan C Kindorf | Support for pipe hangers and the like |
DE19748871A1 (en) * | 1996-11-05 | 1998-06-10 | Rene Dick | Support clamp with two parallel clamping arms joined by connecting arm as U=shaped steel part |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2388153A (en) * | 2002-05-02 | 2003-11-05 | Peter Clarence Barton | Clamp |
GB2388153B (en) * | 2002-05-02 | 2006-01-11 | Peter Clarence Barton | Clamp |
US10947950B2 (en) | 2016-02-18 | 2021-03-16 | Ntn Corporation | Hydroelectric power generation apparatus |
Also Published As
Publication number | Publication date |
---|---|
AU2559900A (en) | 2000-09-21 |
EP1157215A1 (en) | 2001-11-28 |
CN1348531A (en) | 2002-05-08 |
GB9904464D0 (en) | 1999-04-21 |
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