RU2250972C1 - Scaffold - Google Patents

Abstract

FIELD: building, particularly to perform construction-and-assembling and finishing works.

SUBSTANCE: scaffold includes vertical posts with fixed support rings, and tubular longitudinal and transversal tie members. Vertical posts, tubular longitudinal and transversal tie members are attached one to another by support ring, fork member and wedge-like means. Support ring is made as a cup with thickened walls having rounded edges with radius depending on load value. Cup bottom is formed as a plate with curved edges extending at an angle to cup axis or symmetry. Initial point of curved plate edge is spaced from inner cup wall. Through vertical cut is formed in cup bottom for wedge-like means securing. Wedge-like means is made as hollow cone having fixing finger on lesser cone base. Fork member for attaching longitudinal and transversal tie members is made as a single unmatched upper gripping means inserted in support ring cup and shaped similarly with cup outline.

EFFECT: increased wear resistance of scaffold members.

3 cl, 5 dwg

Description

The invention relates to construction and can be used in the construction, installation and finishing works during the construction and repair of buildings and structures.

There are known forests for decoration and repair work, containing supporting racks, longitudinal and transverse connections with their fastening elements, flooring, stairs, fences (1).

The closest technical solution, selected as a prototype, is scaffolding (2) containing vertical racks with supports on which flanges with holes for fasteners, longitudinal and transverse connections with a wedge connection, floorings, stairs, fences are rigidly mounted. Each end of the longitudinal and transverse connection is equipped with a fork, having the shape of a “cleft palate”. The load in this connecting attachment node causes a shear force, the point of application of which is the point. A disadvantage of the known technical solutions is the presence of point loads on the elements in the attachment points of the vertical struts with transverse and longitudinal connections, and as a result, the rapid wear of the structural elements.

The objective of the invention is to create such a construction scaffolding, which avoids point loads by distributing them on the surface of the elements, and increasing the wear resistance and durability of both structural elements and the entire structure as a whole.

This problem is achieved by the fact that in the construction of scaffolding, including vertical racks with support rings rigidly fixed to them, used to connect the racks to each other by means of a wedge device and forks, connected in turn with tubular longitudinal and transverse connections, fences, stairs, floorings , according to the invention, the support rings are made in the form of a bowl with a wall thickened and rounded with a certain radius and a bottom made in the form of a plate, the edges of which are bent at an angle to the axis of the sym of the bowl, and the beginning of the bend is separated by a certain distance from the inner wall of the bowl, and each fork is made in the form of one upper grip entering the bowl of the support ring, while the contact surfaces of the gripper with the support rings exactly repeat the surface of the wall, the bottom of the bowl and the outer generatrix the cone of the wedge device, which in turn is made in the form of a truncated hollow cone, the axis of symmetry of which coincides with the axis of symmetry of the vertical strut and is installed on it with the complete exclusion of angular per displacements, but with the possibility of free rotation around the vertical strut and movement therealong, in addition, the smaller base of the cone of the wedge device is executed finger for its fixation in vertical through-slots formed in the bottom support ring bowl.

Using in the proposed invention the entire combination of essential features with their relationship allowed us to solve the problem.

The use of constructive optimal solutions in conjunction with additional elements and their interconnection made it possible to distribute point loads over the surface of the elements and increase the wear resistance and durability of both structural elements and the entire structure as a whole.

The set of essential features is sufficient in all cases for which the amount of legal protection is requested.

The invention is illustrated by drawings, where figure 1 shows a General view of the scaffolding; figure 2 shows the node I; figure 3 shows a wedge device; figure 4 - view A; figure 5 is a view of B.

Scaffolding includes vertical posts 1, on which support rings 2, tubular longitudinal ties 3 and tubular transverse ties 4 are fixed rigidly. Fastening between vertical posts 1, tubular longitudinal 3 and transverse 4 couplings is carried out by means of a support ring 2, a wedge device 5 and a fork 6 The support ring 2 is made in the form of a bowl with a thickened wall 7 and a rounded inner radius R, as well as a bottom 8 made in the form of a plate, the edges of which are bent at an angle to the axis of symmetry of the bowl, and the start of bending from Toit at a certain distance h from the inner wall of the bowl. The radius of the pairing depends on the load, and it is obtained by calculation. In the bottom 8, a through vertical slot 9 is made for positioning the wedge device 5. The wedge device 5 is made in the form of a truncated hollow cone 10, on the smaller base of which a rectangular finger 11 is made, with the help of which the wedge device 5 is positioned and subsequently fixed in the support ring 2. On the larger base of the cone 10 of the wedge device 5, two diametrically opposite protrusions 12 are made in the form of a crutch with spaced apart hats. The plug 6 is made in the form of one upper unpaired grip 13, which enters the bowl of the support ring 2, while the contact surfaces of the gripper 13 with the support ring 2 exactly repeat the surface of the wall 7, the bottom of the bowl 8 and the outer generatrix of the hollow cone 10 of the wedge device 5.

For safe work on tiers, fences 14, railings 15, stairs 16 and flooring 17 made of shields are provided.

The scaffolds are fastened by means of a proppant plug (not shown in the drawing).

Installation of scaffolding is carried out in accordance with the project of work, first the support platform is leveled, on which vertical posts 1 are placed for marking. After that, vertical posts 1, tubular longitudinal ties 3 and tubular cross ties 4, fences 14, railings 15, stairs are installed 16 and the floorboard 17. The tubular longitudinal connection 3 and the tubular transverse connection 4 are mounted on the support ring 2 by means of a fork 6 and a wedge device 5. Thus, the scaffold frame is assembled. Further scaffolds are fastened by means of a proppant plug in the wall.

Sources of information

1. Dieter Butgereit, R. Koshada Rosvandich, Verlag fur Architektur und technische wissenschaften, 1991, Berlin (pp. 144-149);

2. Catalog of the company “Teknik-el", p. 5 (prototype).

Claims (3)

1. Scaffolding, including vertical racks with support rings rigidly fixed on them, used to connect the racks to each other by means of a wedge device and forks, connected, in turn, with tubular longitudinal and transverse connections, fences, stairs, floorings, characterized in that that the support rings are made in the form of a bowl with a thickened wall and a rounded edge, with a radius depending on the magnitude of the load, and a bottom made in the form of a plate, the edges of which are bent at an angle to the axis of symmetry of the bowl, and the bend is separated by a distance from the inner wall of the bowl, and each fork is made in the form of one upper grip entering the bowl of the support ring, while the contact surfaces of the grip with the support rings exactly repeat the surface of the wall, the bottom of the bowl and the outer generatrix of the cone of the wedge device, which, in turn, it is made in the form of a truncated hollow cone, the axis of symmetry of which coincides with the axis of symmetry of the vertical strut, and is installed on it with the complete exclusion of angular displacements, but with the possibility of free of rotation around the vertical strut and movement therealong, in addition, the smaller base of the cone of the wedge device is formed for fixing a finger in the vertical through-slots formed in the bottom support ring bowl. 2. Scaffolding according to claim 1, characterized in that on a larger base of the cone of the wedge device two diametrically opposite protrusions are made in the form of a crutch with spaced apart hats. 3. Scaffolding according to claim 1, characterized in that the through vertical slot made in the bottom of the bowl of the support ring has a cross-section in a rectangle and is located in such a way that one of its sides belongs to the surface of the vertical strut.

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