GB2224307A - Scaffolding clamp - Google Patents

Scaffolding clamp Download PDF

Info

Publication number
GB2224307A
GB2224307A GB8924153A GB8924153A GB2224307A GB 2224307 A GB2224307 A GB 2224307A GB 8924153 A GB8924153 A GB 8924153A GB 8924153 A GB8924153 A GB 8924153A GB 2224307 A GB2224307 A GB 2224307A
Authority
GB
United Kingdom
Prior art keywords
clamp
support sleeve
pole
scaffolding
bolt
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.)
Withdrawn
Application number
GB8924153A
Other versions
GB8924153D0 (en
Inventor
Rankin Macarthur Durnin
James Mcrae
George Murray
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB8924153D0 publication Critical patent/GB8924153D0/en
Publication of GB2224307A publication Critical patent/GB2224307A/en
Withdrawn legal-status Critical Current

Links

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
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts
    • F16B35/044—Specially-shaped ends
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • E04G5/045—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on profiles, e.g. I or H profiles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G7/00—Connections between parts of the scaffold
    • E04G7/02—Connections between parts of the scaffold with separate coupling elements
    • E04G7/26—Connections between parts of the scaffold with separate coupling elements for use with specially-shaped scaffold members
    • 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
    • F16B2/065—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 using screw-thread elements
    • 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
    • F16B41/00—Measures against loss of bolts, nuts, or pins; Measures against unauthorised operation of bolts, nuts or pins
    • F16B41/002—Measures against loss of bolts, nuts or pins
    • 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
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
    • F16B21/16—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft
    • F16B21/18—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft with circlips or like resilient retaining devices, i.e. resilient in the plane of the ring or the like; Details
    • F16B21/186—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft with circlips or like resilient retaining devices, i.e. resilient in the plane of the ring or the like; Details external, i.e. with contracting action

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

The clamp comprises a C shaped body 1 and a support sleeve 2. An adjusting bolt 3 and a positioning bolt 4 extend through one arm 5 of the body 1 and a compression pad 6 is attached to the other arm 7 of the body 1. The clamp is used to clamp a scaffolding pole 6 onto H beam 9. The body 1 slots over the pole 8 and the arm 7 fits over the side of the H beam 9. By adjusting the adjusting bolt 3 and positioning bolt 4, the support sleeve 2 is brought into contact with the pole 8 and tightened against it, to 8 and H beam 9 together. The compression pad 6 spreads the load between the arm 7 of the clamp body 1 and the beam 9 and this together with the gripping of the pole 8 by the support beam 2 ensures that the likelihood of the clamp slipping is minimised. Figure 2 illustrates an embodiment with circlip 10 for retaining bolt 4 and a plug 11 in socket 12 in support sleeve engaged by bolt 3. <IMAGE>

Description

Scaffolding Clamp This invention relates to a scaffolding clamp.
Conventional clamps for attaching scaffolding poles to beams generally comprise a split circular clamp for attachment to the pole together with a half C shaped member and a bolt threaded through the arm of the C which can be tightened up against the beam to retain the beam against the scaffold pole. Such a layout has the disadvantage that the integrity of the structure relies on the single point fixing between the fixing bolt and the beam. In certain situations it is possible for the clamp to be displaced.
It is an object of the present invention to obviate or mitigate this problem.
According to the present invention there is provided a scaffolding clamp comprising a clamp body generally C shaped in cross-section and having a slot for receiving a scaffolding pole, a support sleeve on the clamp for engaging a pole and adjustment means for biasing the support sleeve towards an arm of the clamp body for clamping a pole and a beam together.
Preferably the adjustment means comprises a bolt retained on the support sleeve and threaded through the clamp body.
Preferably also the support sleeve comprises an elongate part circular member.
Embodiments of the present invention will now be described, by way of example, with reference to the accompanying drawings in which; Fig. 1 is a part sectional side view of a first embodiment of a clamp in accordance with the present invention in use; Fig. 2 is a part sectional side view of an alternative embodiment of a scaffolding clamp in accordance with the present invention in use; Fig. 3 is an end view of the clamp of Fig. 2 in use; Fig. 4 is an end view of the clamp of Fig. 2; Fig. 5 is a side sectional view of the clamp taken along line AA of Fig 4; Fig. 6 is a plan sectional view of the clamp taken along line BB of Fig. 4; Fig. 7 is a plan view of the clamp of Fig. 2; Fig. 8 is a side view of a support sleeve of the clamp of Fig. 2; Fig. 9 is an end view of the support sleeve of Fig. 8; Fig. 10 is a side view of an adjusting bolt of the clamp of Fig. 2; and Fig. 11 is a side view of positioning bolt of the clamp of Fig. 2.
Referring to Fig. 1 of the drawings, a simple scaffolding clamp of the invention comprises a C shaped body 1 and a support sleeve 2. An adjusting bolt 3 and a positioning bolt 4 extend through one arm 5 of the body 1 and a compression pad 6 is attached to the other arm 7 of the body 1.
A circlip, not shown, retains the positioning bolt 4 in a socket in the support sleeve 2.
The apparatus is used to clamp a scaffolding pole 8 onto a beam 9. The body 1 slots over the pole 8 and the arm 7 fits over the side of the H beam 9. By adjusting the adjusting bolt 3 and positioning bolt 4, the support sleeve 2 is brought into contact with the pole 8 and tightened against it. This has the effect of retaining the pole 8 and H beam 9 together. The compression pad 6 spreads the load between the arm 7 of the clamp body 1 and the beam 9 and this together with the gripping of the pole 8 by the support beam 2 ensures that the likelihood of the clamp slipping is minimised.
The positioning of the adjusting bolt 3 and positioning bolt 4 below the pole 8 allows for easy fitment of the clamp in use.
The basic layout of the clamp can be modified to provide clamps having varying load capacity and also to allow fitment to different layouts and sizes of scaffolding structures.
For example the embodiment illustrated in Figs. 2 to 11 is an improved version of the scaffolding clamp with various modifications incroporated for production purposes. The basic construction of the clamp is however identical to the Fig. 1 embodiment and like parts are therefore accorded like reference numerals. In this embodiment the circlip 10 for retaining the positioning bolt 4 can be seen and a plug 11 in a socket 12 in the support sleeve 2 is engaged by the adjusting bolt 3. Strengthening webs 13 are also included on the clamp 1.

Claims (6)

1. A scaffolding clamp comprising a clamp body generally C shaped in cross-section and having a slot for receiving a scaffolding pole, a support sleeve on the clamp for engaging a pole and adjustment means for biasing the support sleeve towards an arm of the clamp body for clamping a pole and a beam together.
2. A scaffolding clamp as claimed in Claim 1, wherein the adjustment means comprises a bolt retained on the support sleeve and threaded through the clamp body.
3. A scaffolding clamp as claimed in Claim 2, wherein a second bolt on the support sleeve provides positioning means for the support sleeve.
4. A scaffolding clamp as claimed in Claim 1, 2, or 3 wherein the support sleeve comprises an elongate part circular member.
5. A scaffolding clamp as claimed in any one of the preceeding Claims, wherein deformable engagement means are provided on an arm of the clamp body for engaging an item to be clamped.
6. A scaffolding clamp substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
GB8924153A 1988-10-26 1989-10-26 Scaffolding clamp Withdrawn GB2224307A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888825029A GB8825029D0 (en) 1988-10-26 1988-10-26 Scaffolding clamp

Publications (2)

Publication Number Publication Date
GB8924153D0 GB8924153D0 (en) 1989-12-13
GB2224307A true GB2224307A (en) 1990-05-02

Family

ID=10645802

Family Applications (2)

Application Number Title Priority Date Filing Date
GB888825029A Pending GB8825029D0 (en) 1988-10-26 1988-10-26 Scaffolding clamp
GB8924153A Withdrawn GB2224307A (en) 1988-10-26 1989-10-26 Scaffolding clamp

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB888825029A Pending GB8825029D0 (en) 1988-10-26 1988-10-26 Scaffolding clamp

Country Status (1)

Country Link
GB (2) GB8825029D0 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992004516A1 (en) * 1990-09-01 1992-03-19 C.W.C. Ltd. Improved clamp and mounting arrangement
GB2476310A (en) * 2009-12-21 2011-06-22 Andrew Craven Benson Bracket
CN112177311A (en) * 2020-09-04 2021-01-05 中国建筑第二工程局有限公司 Steel pipe fixing end device for fixing I-shaped steel end of overhanging outer frame and construction method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB838828A (en) * 1956-12-28 1960-06-22 Donald Mayer King Improvements in or relating to devices for facilitating the attachment of items of equipment or other structural members to joists, beams or the like
US4445307A (en) * 1982-11-08 1984-05-01 Figgie International Inc. Scaffold joint for a scaffold structure
US4570885A (en) * 1983-09-19 1986-02-18 Tolco, Incorporated Hanger clamp body and method of forming same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB838828A (en) * 1956-12-28 1960-06-22 Donald Mayer King Improvements in or relating to devices for facilitating the attachment of items of equipment or other structural members to joists, beams or the like
US4445307A (en) * 1982-11-08 1984-05-01 Figgie International Inc. Scaffold joint for a scaffold structure
US4570885A (en) * 1983-09-19 1986-02-18 Tolco, Incorporated Hanger clamp body and method of forming same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992004516A1 (en) * 1990-09-01 1992-03-19 C.W.C. Ltd. Improved clamp and mounting arrangement
GB2262964A (en) * 1990-09-01 1993-07-07 Decoray Ltd Improved clamp and mounting arrangement
GB2262964B (en) * 1990-09-01 1994-08-17 Decoray Ltd Improved clamp and mounting arrangement
GB2476310A (en) * 2009-12-21 2011-06-22 Andrew Craven Benson Bracket
GB2476310B (en) * 2009-12-21 2014-04-02 Andrew Craven Benson Bracket
CN112177311A (en) * 2020-09-04 2021-01-05 中国建筑第二工程局有限公司 Steel pipe fixing end device for fixing I-shaped steel end of overhanging outer frame and construction method

Also Published As

Publication number Publication date
GB8924153D0 (en) 1989-12-13
GB8825029D0 (en) 1988-11-30

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)