Scaffolding pipe of a structural scaffolding system and scaffolding element

Patent metadata

Field	Value
Publication number	US-9920541-B2
Application number	US-201615000330-A
Country	US
Kind code	B2
Filing date	Jan 19, 2016
Priority date	Aug 2, 2013
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

A scaffolding pipe of a structural scaffolding system extends from a first axial pipe end to an opposing second axial pipe end. A receiving portion is provided on the first axial pipe end and an insertion portion is provided on the second axial pipe end. The insertion portion has a reduced cross-section compared with the receiving portion and terminates with a radial shoulder which forms a support face. The receiving portion inner diameter is greater than the insertion portion outer diameter. The receiving portion at the first axial pipe end has one positioning groove which is interrupted or continuous in a peripheral direction which reduces the inner diameter of the receiving portion and which defines the minimum inner diameter of the receiving portion. A pipe wall of the scaffolding pipe has at the first axial pipe end a maximum wall thickness greater than the otherwise smaller wall thickness.

First claim

What is claimed is:

1. A scaffolding pipe of a structural scaffolding system, comprising:
a pipe axis A which extends from a first axial pipe end to an opposing second axial pipe end;
a receiving portion which is provided on the first axial pipe end;
an insertion portion which is provided on the opposing second axial pipe end and which has a reduced cross-section compared with the receiving portion where the reduced cross-section terminates with a radial shoulder which forms an annular support face which is perpendicular to the pipe axis A and is directed towards the insertion portion;
wherein an inner diameter d 1,i of the receiving portion is greater than an outer diameter d 2,a of the insertion portion so that an adjacent scaffolding pipe having an identical insertion portion can be inserted into the receiving portion of the scaffolding pipe wherein the first axial pipe end is configured to abut an identical annular support face of the adjacent scaffolding pipe;
wherein a pipe wall of the scaffolding pipe at a furthest end of the first axial pipe end has a maximum wall thickness s max and otherwise has a smaller wall thickness s moving towards the opposing second axial pipe end;
wherein the scaffolding pipe is produced in one piece from a metal pipe, and wherein the various portions are formed by plastic deformation; and
wherein the first axial pipe end has an outer diameter d 1,a and wherein the insertion portion has from the second axial pipe end to the radial shoulder an axial insertion length L E , wherein the axial insertion length L E is at least two times the length in comparison to the outer diameter d 1,a .

2. The scaffolding pipe according to claim 1 , wherein the following applies to the maximum wall thickness s max at the first axial pipe end: 1.2*s≤s max 2*s.

3. The scaffolding pipe according to claim 2 , wherein the maximal wall thickness s max is equal to 1.5 times the smaller wall thickness s.

4. The scaffolding pipe according to claim 1 , wherein the outer diameter d 1,a of the scaffolding pipe at the first axial pipe end substantially corresponds to the outer diameter d 1,a of the receiving portion.

5. The scaffolding pipe according to claim 1 , wherein the scaffolding pipe has at the first axial pipe end a thickened portion in which the pipe wall is thickened in a substantially wedge-like manner from the smaller wall thickness s to the maximum wall thickness s max .

6. The scaffolding pipe according to claim 5 , wherein the thickened portion has an axial dimension L A , where s<L A <5*s.

7. The scaffolding pipe according to claim 6 , wherein the thickened portion has an axial dimension L A , where L A is approximately 2.5*s.

8. The scaffolding pipe according to claim 1 , wherein the receiving portion at the first axial pipe end has a positioning groove which is interrupted or continuous in a peripheral direction and which reduces the inner diameter d 1,i of the receiving portion and defines a minimum inner diameter d 1,i,min of the receiving portion.

9. The scaffolding pipe according to claim 8 , wherein the insertion portion has from the second axial pipe end to the radial shoulder the axial insertion length L E , an axial spacing x p of the positioning groove from the first axial pipe end being smaller than a third of the axial insertion length L E .

10. The scaffolding pipe according to claim 8 , wherein the insertion portion has from the second axial pipe end to the radial shoulder the axial insertion length L E , and an axial spacing x p of the positioning groove from the first axial pipe end being smaller than a fifth of the axial insertion length L E .

11. The scaffolding pipe according to claim 8 , wherein an axial spacing x p of the positioning groove from the first axial pipe end is smaller than the inner diameter d 1,i of the receiving portion.

12. The scaffolding pipe according to claim 8 , wherein the receiving portion has a second groove which is interrupted or continuous in a peripheral direction, this second groove having a larger axial spacing x N with respect to the first axial pipe end than the positioning groove, the second groove defining an inner diameter d 1,i,N to which the following applies: d 1,i,min <d 1,i,N <d 1,i .

13. The scaffolding pipe according to claim 12 , wherein the insertion portion from the second axial pipe end to the radial shoulder has the axial insertion length L E , the following applying to an axial spacing x N of the groove with respect to the first axial pipe end: 0.5*L E <x N <L E .

14. The scaffolding pipe according to claim 13 , wherein the insertion portion from the second axial pipe end to the radial shoulder has the axial insertion length L E , where x N is approximately equal to 0.8*L E .

15. The scaffolding pipe according to claim 1 , wherein the scaffolding pipe has between the receiving portion and the insertion portion an intermediate region in which the scaffolding pipe has the same outer diameter d 1,a as in the receiving portion.

16. The scaffolding pipe according to claim 15 , wherein the intermediate region has adjacent to the radial shoulder an expansion portion, in which the scaffolding pipe expands radially towards the radial shoulder.

17. The scaffolding pipe according to claim 1 , wherein the annular support face has an outer diameter d 3,a which is greater than the outer diameter d 1,a of the receiving portion.

18. The scaffolding pipe according to claim 1 , wherein the insertion portion adjacent to the radial shoulder has a contraction which extends in the peripheral direction so that the annular support face has an inner diameter d 3,i which is smaller than the outer diameter d 2,a of the insertion portion.

19. The scaffolding pipe according to claim 1 , wherein the insertion portion tapers towards the second axial pipe end and forms a tapered introduction portion.

20. The scaffolding pipe according to claim 1 , wherein the scaffolding pipe is part of an operational scaffolding system and the wall thickness s of the scaffolding pipe is a maximum of 3.2 mm, or is part of a load-bearing scaffolding system and the wall thickness s of the scaffolding pipe is from 2.7 mm to 3.2 mm.

21. A scaffolding element comprising a scaffolding pipe according to claim 1 , the scaffolding element including a transverse carrier which is securely fitted to the scaffolding pipe, the transverse carrier being arranged perpendicularly relative to the scaffolding pipe on the receiving portion or on an intermediate region of the scaffolding pipe.

22. The scaffolding element according to claim 21 , wherein there are provided two scaffolding pipes which are connected to each other by means of the at least one transverse carrier in order to form a frame element of the structural scaffolding system.

Assignees

• Peri Gmbh

Inventors

• Erath Frank
• Leder Christian
• Specht Rudolf

Classifications

• E04G1/06 Primary

  comprising members with rod-like or tubular portions fitting together end to end, with or without separate connecting pieces · CPC title

• E04G7/301 Primary

  for connecting bars or members which are parallel or in end-to-end relation · CPC title

• F16L13/04

  with arrangements preventing overstressing · CPC title

• E04G1/14

  Comprising essentially pre-assembled two-dimensional [2D] frame-like elements, e.g. of rods in L- or H-shape, with or without bracing (E04G1/15 takes precedence) · CPC title

• F16L13/16

  the pipe joint consisting of overlapping extremities having mutually co-operating collars · CPC title