CA2574930A1 - Adjustable and transportable scaffolding - Google Patents

Adjustable and transportable scaffolding Download PDF

Info

Publication number
CA2574930A1
CA2574930A1 CA002574930A CA2574930A CA2574930A1 CA 2574930 A1 CA2574930 A1 CA 2574930A1 CA 002574930 A CA002574930 A CA 002574930A CA 2574930 A CA2574930 A CA 2574930A CA 2574930 A1 CA2574930 A1 CA 2574930A1
Authority
CA
Canada
Prior art keywords
sleeve
rod
leg support
adjustable leg
secured
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
CA002574930A
Other languages
French (fr)
Other versions
CA2574930C (en
Inventor
Daniel Grenon
Marco Robidoux
Richard Boucher
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
Priority claimed from CA 2475947 external-priority patent/CA2475947A1/en
Priority claimed from CA002504363A external-priority patent/CA2504363A1/en
Application filed by Individual filed Critical Individual
Priority to CA2574930A priority Critical patent/CA2574930C/en
Publication of CA2574930A1 publication Critical patent/CA2574930A1/en
Application granted granted Critical
Publication of CA2574930C publication Critical patent/CA2574930C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
    • 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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/28—Scaffolds primarily resting on the ground designed to provide support only at a low height
    • 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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/28—Scaffolds primarily resting on the ground designed to provide support only at a low height
    • E04G1/30—Ladder scaffolds
    • 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
    • E04G1/00—Scaffolds primarily resting on the ground
    • E04G1/24—Scaffolds primarily resting on the ground comprising essentially special base constructions; comprising essentially special ground-engaging parts, e.g. inclined struts, wheels
    • E04G2001/242—Scaffolds movable on wheels or tracks

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ladders (AREA)

Abstract

An adjustable and transportable scaffolding (10) is described. It comprises an adjustable leg support mechanism (20) for a scaffolding having vertical corner frame members (11) connected to horizontal frame members (12) and cross-braces (13). The mechanism (20) comprises an open-ended sleeve (21) adapted to receive a support rod (22) therethrough and wherein the support rod has at least a horizontal toothed edge section (23) adapted to sercure to a bottom support foot (24). A tooth engaging member (25) is pivotally secured to the sleeve (21) and has a tooth engaging head (26) biased against the toothed edge (23) inside the sleeve (21) for supporting the sleeve about the support rod (22) while permitting upward displacement of the sleeve about the rod. The tooth engaging member (25) can be unbiased from the toothed edge (23) of the support rod (22) to permit downward displacement of the sleeve (21) about the rod (22). A locking member (40) is provided to lock the tooth engaging member (25) in arresting position with the toothed edge (23). The sleeve (21) is also provided with a connector (52) for support engagement with one of the corner frame members (11) of the scaffolding (10).

Claims (23)

1. An adjustable leg support mechanism 20 for a scaffolding 10 having vertical corner frame members 11 connected to horizontal frame members 12 and cross-braces 13, said mechanism being characterized in that it comprises an open-ended sleeve 21 adapted to receive a support rod 22 therethrough and wherein said support rod has at least a longitudinal toothed edge section 23 and is adapted to secure to a bottom support foot 24, a tooth engaging member 25 pivotally secured to said sleeve 21 and having a tooth engaging head 26 biased against said toothed edge 23 inside said sleeve 21 for supporting said sleeve about said support rod 22 while permitting upward displacement of said sleeve about said rod, means 27, 28 to unbias said tooth engaging head 26 from said toothed edge to permit downward displacement of said sleeve about said rod, arresting means 40 to lock said tooth engaging head 26 in arresting position with said toothed edge 23 and attachment means 52 for securing said sleeve 21 for support engagement with one of said vertical corner frame members 11 of a scaffolding.
2. An adjustable leg support mechanism as claimed in claim 1 characterized in that said means to unbias said tooth engaging head is a lever arm 28 formed integral with said tooth engaging head 26, said tooth engaging head 26 having an engaging projection 34 projecting through an aperture 30 inside said open-ended sleeve.
3. An adjustable leg support mechanism as claimed in claim 2 characterized in that said sleeve 21 has a substantially rectangular cross-section for receiving therethrough said support rod 22 which is of substantially square cross-section, said toothed edge section 23 being constituted by a plurality of saw tooth formations 23' formed along a side wall of said support rod and facing said aperture 30 of said sleeve 21.
4. An adjustable leg support mechanism as claimed in claim 3 characterized in that said saw tooth formations 23' each define a horizontal support ledge 32 and an outwardly sloping wall section 33, said engaging projection 34 having a wedge shape formation 34' defining a flat bottom wall 35 for seated engagement on said support ledge 32 and a rearwardly sloping upper wall 36 for frictional sliding engagement against said outwardly sloping wall section 33 of said tooth.
5. An adjustable leg support mechanism as claimed in claim 4 characterized in that said tooth engaging head 26 is pivotally connected by a pivot connection 27 between a pair of support flanges 37 secured to said sleeve 21 on opposed sides of a side wall 31 of said sleeve having said aperture 30, said wedge-shaped formation 24' being biased against said saw tooth formation 23 by the weight of said lever arm, said lever arm when displaced upwardly about said pivot connection 27 causing said wedge shape formation to retract through said aperture.
6. An adjustable leg support mechanism as claimed in claim 2 characterized in that said arresting means 40 is a locking lever pivotally connected 41 to said sleeve 21 and having an arresting formation 42 for removable engagement with said tooth engaging head to prevent displacement of said lever arm 28 and disengagement of said engaging projection with said toothed edge section 23 of said support rod 22.
7. An adjustable leg support mechanism as claimed in claim 1 characterized in that said bottom support foot 24 is a slide plate 99 for sliding displacement on a ground support surface 14.
8. An adjustable leg support mechanism as claimed in claim 1 characterized in that there is further provided a rod connector 50 secured to said sleeve 21 for connection to a transverse tubular rod 51 interconnecting two opposed leg support mechanisms 20 together.
9. An adjustable leg support mechanism as claimed in claim 1 characterized in that said attachment means 52 is a vertical connecting post 52 for release engagement with a hollow tubular end 55 of said vertical corner frame member 11.
10. An adjustable leg support mechanism as claimed in claim 1 characterized in that there is further provided locking means 56 to automatically lock said support rod 22 with said sleeve 21 at one or more predetermined positions.
11. An adjustable leg support mechanism as claimed in claim 10 characterized in that said locking means is a spring-biased lock pin 52 secured to said sleeve 21 and having a spring-biased rod 56 urged against a side wall 59 of said support rod 22 for engagement in a hole 58 formed in said side wall 59 at said one or more predetermined positions.
12. An adjustable leg support mechanism as claimed in claim 1 characterized in that there is further provided a support wheel 60 secured to wheel support means 61 secured to said sleeve 21, said wheel 60 having its planar axis of rotation extending parallel to said sleeve.
13. An adjustable leg support mechanism as claimed in claim 12 characterized in that said wheel 60 is removably secured to said wheel support means 61 which is constituted by a wheel attachment sleeve 61 secured to said sleeve 21.
14. An adjustable leg support mechanism as claimed in claim 12 characterized in that there is further provided a rod connector 50 secured to said sleeve 21 for connection to a transverse tubular rod 51 for interconnecting two opposed leg support mechanisms 20 together in tandem arrangement, a carriage frame connector 86, 86' secured to said wheel support means 61, 61', each of said two opposed leg support mechanisms 20 adapted for interconnection with carriage frame connecting rods 89, 89' to displace said tandem arrangement on said support wheels 60.
15. An adjustable leg support mechanism as claimed in claim 14 characterized in that said rod connector 50 is pivotally secured to said sleeve 21, and a vertical connecting post 52 secured to said rod connector for release engagement with a hollow tubular end 55 of said vertical corner frame member 11, and lock means 76 for arresting said wheel support means 61 at a desired angular portion relative to said sleeves 21 of said tandem arrangement to displace said tandem arrangement along a desired direction.
16. An adjustable leg support mechanism as claimed in claim 15 characterized in that said carriage frame connector is an elongated flange 86, 86' having a slot 88 therein to receive a connecting pin element 90 secured to a connecting end of said carriage connecting rods 89, 89' to permit displacement of said connecting end along said slot 88, said carriage connecting rods 89, 89' being pivotally secured 93, 93' at a remote end to a handle 94 to effect said displacement of said tandem arrangement.
17. An adjustable leg support mechanism as claimed in claim 15 characterized in that said lock means 76 comprises a horizontal lock flange 70 secured to said sleeve 21 and having an arcuate outer edge 71 provided with two or more locking cavities 72 disposed therealong, a pivot connecting flange 73 spaced above said lock flange 70 and extending parallel thereto, said rod connector 50 being pivotally connected between said lock flange 70 and said pivot connecting flange 73 by a pivot pin 74, and a position arresting pin 76 spring-biased against a top peripheral edge of said lock flange 70 and secured to said rod connector, said position arresting pin 76 interconnecting said rod connector to said lock flange when received in one of said locking cavities 72.
18. An adjustable leg support mechanism as claimed in claim 17 characterized in that said position arresting pin 76 is provided with engaging means 77 to retract said arresting pin from one of said locking cavitie's 72 for disengagement.
19. An adjustable leg support mechanism as claimed in claim 15 characterized in that said rod connector 50 is a connecting end of said transverse tubular rod 51.
20. An adjustable leg support mechanism as claimed in claim 19 characterized in that said transverse tubular rod 51 is a telescopic rod 80 having interconnection means 81.
21. An adjustable leg support mechanism as claimed in claim 19 characterized in that a leveling device 83 is secured to said transverse tubular rod 51, 80 to assist in locking a scaffolding tubular structure secured to said tandem arrangement.
22. A support foot 24 for a scaffolding having vertical corner posts 11, said support foot 24 being characterized by a slide plate 99 having a bottom ground engaging face 100 and opposed upwardly angled end flanges 101, and a vertical connector 103 disposed substantially central on a top wall 104 of said slide plate 99 for removable connection with a lower end section 55 of said corner posts 11.
23. A support foot 24 as claimed in claim 22 characterized in that said vertical connector is a vertical connecting post 103 for release engagement within a hollow end 55 of said corner posts, said corner posts 11 being hollow tubular posts having at least one lock pin receiving hole 106 for receiving therein a spring-biased lock pin 105 projecting from said vertical connecting post 103.
CA2574930A 2004-07-27 2005-06-07 Adjustable and transportable scaffolding Active CA2574930C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2574930A CA2574930C (en) 2004-07-27 2005-06-07 Adjustable and transportable scaffolding

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CA2,475,947 2004-07-27
CA 2475947 CA2475947A1 (en) 2004-07-27 2004-07-27 Scaffolding device
CA2,504,363 2005-04-06
CA002504363A CA2504363A1 (en) 2004-07-27 2005-04-06 Adjustable and transportable scaffolding
PCT/CA2005/000892 WO2006010247A1 (en) 2004-07-27 2005-06-07 Adjustable and transportable scaffolding
CA2574930A CA2574930C (en) 2004-07-27 2005-06-07 Adjustable and transportable scaffolding

Publications (2)

Publication Number Publication Date
CA2574930A1 true CA2574930A1 (en) 2006-02-02
CA2574930C CA2574930C (en) 2012-12-18

Family

ID=37890083

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2574930A Active CA2574930C (en) 2004-07-27 2005-06-07 Adjustable and transportable scaffolding

Country Status (1)

Country Link
CA (1) CA2574930C (en)

Also Published As

Publication number Publication date
CA2574930C (en) 2012-12-18

Similar Documents

Publication Publication Date Title
CA2504363A1 (en) Adjustable and transportable scaffolding
US9587434B2 (en) Ladder
US8162273B2 (en) Adjustable support structure
US6691828B1 (en) Scaffold stair
BRPI0810232B1 (en) METAL SUPPORT FOR SCAFFOLDING, CONNECTION ARRANGEMENT FOR AN ANTARIO DEVICE, AND METHOD OF ATTACHING AT LEAST ONE ANTIPARATION DEVICE WITH HELP OF FIXING DEVICES TO A SUPPORT.
US7874115B2 (en) Modular floor
JP2020007792A (en) Stepladder serving as simple scaffold
US8393586B1 (en) Hitch mountable ladder support
US7717195B2 (en) Auger stabilizer
EP1783302A2 (en) Connection means of a scaffolding support outrigger, scaffolding support outrigger with such connection means
JP4683595B2 (en) Mounting method of handrail on frame scaffold
CA2574930A1 (en) Adjustable and transportable scaffolding
FR2793519A1 (en) Support ladder for gutter maintenance comprises two triangulated support sections and foldable nacelle composed of floor, corner iron, struts and crosspiece supported by rubber castors on wall
CN210289059U (en) Combined scaffold
CN113685015A (en) Interlocking foot pedal assembly
CN216587608U (en) Semiconductor production line transformation project is with scaffold frame of ascending a height
SK94797A3 (en) Ladder-supported working platform
CN217054988U (en) Ladder for building
CN214034450U (en) Loft ladder with balance rod on bottom foot
CN216406107U (en) Anti-falling climbing frame
CN213175553U (en) Auxiliary device for lifting and placing drill rod on drilling site
CN109025790A (en) A kind of constructions work is with can be used more convenient comfortable ladder
KR102371325B1 (en) A ladder of fold type, A ladder of A fold type, Scaffolding Ladder
CN215978414U (en) Interlocking combined pedal
CN216713749U (en) Building structure convenient for construction of exterior wall decoration engineering and interior decoration engineering

Legal Events

Date Code Title Description
EEER Examination request