CN2537779Y

CN2537779Y - Fastener for scaffold

Info

Publication number: CN2537779Y
Application number: CN 02208452
Authority: CN
Inventors: 张占军
Original assignee: 赵艳
Priority date: 2002-03-22
Filing date: 2002-03-22
Publication date: 2003-02-26
Anticipated expiration: 2012-03-22

Abstract

The utility model relates to a clipping part of a framing scaffold. In order to reduce the weight and the cost, and to improve the mechanical strength of the prior framing scaffold, the utility model comprises a main clipping part and an auxiliary clipping part clipped with the main clipping part, wherein the main clipping part comprises four tenons distributed in equal distances and arranged on the cirumferential of a cylinder main body, a trapezoidal groove provided with big inner and upper parts and small outer and lower parts and formed between the side edges of adjacent tenons, and relatively projecting convex edges arranged at the end part of the side edge of each tenon; the auxiliary clipping part comprises a disk, and a pin joggle matched with the groove of the main clipping part and arranged on one side of the disk. The utility model has the advantages that the utility model is light and saves materials, the cost is low, the mechanical strength is high, and the tensile strength is large after the utility model is used for clipping.

Description

The fastener of scaffold

Technical field:

The utility model relates to a kind of coupling arrangement of scaffold, particularly relates to a kind of fastener of scaffold.

Technical background:

Set up complex process when the fastener of a large amount of steel pipe scaffolds that use supports at present, vertical load poor reliability.Effect was better when the bowl fastening type steel pipe scaffold was used to support, and when still being used for external scaffolding, its resistance to overturning is poor, needed a large amount of braces keep balance.Though the scaffold of other type can satisfy the pin hand simultaneously and support two kinds of functions, its design is unreasonable, is not too heavy, waste material, and the cost height is exactly that tensile strength is low, damages easily.

Summary of the invention:

The purpose of this utility model is to overcome the above-mentioned shortcoming of prior art, and a kind of saving material is provided, and cost is low, and the fastener of the big scaffold of mechanical strength.

For achieving the above object, the fastener of the utility model scaffold comprise main fastener and with the auxiliary fastener of its snapping, described main fastener is that the periphery of drum shape body is shaped on four tenons that equidistantly distribute, face mutually and respectively form big outer little and up big and down small trapezoidal groove between the side of tenon, and the side end of each tenon all is shaped on the fin of relative protrusion; Described auxiliary fastener comprises a disk, and a side of this disk is shaped on the pin tenon that matches with the groove of above-mentioned main fastener.

As optimization, the height of described fin from top to bottom increases successively.Help increasing the contact area of major-minor fastener like this, the tension compressive strength behind the raising snapping, and can prevent from better to become flexible again behind the major-minor fastener snapping.

As optimization, the body of described main fastener middle part is hollow; Described tenon end also is shaped on hollow hole; Described auxiliary fastener is shaped on hollow hole at the center of pin tenon.Help like this when alleviating the fastener own wt, improve the relative mechanical strength of fastener.

As optimization, described disk is tubular protrusion at the opposite side relative with its pin tenon.Help connecting of auxiliary fastener and stay pipe like this.

After adopting technique scheme, under the effect of gravity load or horizontal loading, produce engagement force between the contact surface of the groove of the main fastener of the fastener of the utility model scaffold and auxiliary fastener pin tenon, hammer force and the increase of vertical load and increase of engagement force when installing.Every group of pin tenon and groove all can form independently rock-steady structure under the effect of engagement force, thereby obtain reliable resistance to overturning.Main fastener can be connected on the column during use, auxiliary fastener is connected on the cross bar.Particularly, increased the contact surface between the major-minor fastener, more helped strengthening the linking intensity between the major-minor fastener, be not easy loosening and slippage under vibration after making major-minor fastener snapping because the side end of each tenon all is shaped on the fin of relative protrusion.Therefore, it is rational in infrastructure, can give full play to the strength character of material, existing fastener can bear bigger load under similarity condition, and the stress surface of snapping part is big, connect firmly, tensile strength is big, owing to be shaped on hollow hole in the appropriate location of main fastener and secondary fastener, can save steel greatly again, reduce cost, reduce deadweight and improve mechanical strength.

Description of drawings:

Fig. 1 is the vertical view of the fastener of the utility model scaffold;

Fig. 2 is the lateral view of the fastener of the utility model scaffold;

Fig. 3 is the vertical view of auxiliary fastener of the fastener of the utility model scaffold;

Fig. 4 is the lateral view of auxiliary fastener of the fastener of the utility model scaffold.

The specific embodiment:

Be further described below in conjunction with accompanying drawing:

The fastener of the utility model scaffold it comprise main fastener and with the auxiliary fastener of its snapping, it is characterized in that described main fastener is that the periphery of drum shape body 1 is shaped on four tenons that equidistantly distribute 2, face mutually and respectively form big outer little and up big and down small trapezoidal groove 3 between the side of tenon 2, and the side end of each tenon 2 all is shaped on the fin 4 of relative protrusion, and the height of this fin 4 from top to bottom increases successively; Described auxiliary fastener comprises a disk 5, and a side of this disk 5 is shaped on the pin tenon 6 that matches with the groove 3 of above-mentioned main fastener.Body 1 middle part of described main fastener is hollow; Described tenon 2 ends also are shaped on hollow hole 7; Described auxiliary fastener is shaped on hollow hole 7 at the center of pin tenon 6.Described disk 5 is tubular protrusion at the opposite side relative with its pin tenon 6.

Claims

1, a kind of fastener of scaffold, it comprise main fastener and with the auxiliary fastener of its snapping, it is characterized in that described main fastener is that the periphery of drum shape body (1) is shaped on four tenons that equidistantly distribute (2), face mutually and respectively form big outer little and up big and down small trapezoidal groove (3) between the side of tenon (2), and the side end of each tenon (2) all is shaped on the fin (4) of relative protrusion; Described auxiliary fastener comprises a disk (5), and a side of this disk (5) is shaped on the pin tenon (6) that matches with the groove (3) of above-mentioned main fastener.

2, the fastener of scaffold according to claim 1 is characterized in that the height of described fin (4) increases successively from top to bottom.

3, the fastener of scaffold according to claim 1 is characterized in that body (1) middle part of described main fastener is hollow; Described tenon (2) end also is shaped on hollow hole (7); Described auxiliary fastener is shaped on hollow hole (7) at the center of pin tenon (6).

4, the fastener of scaffold according to claim 1 is characterized in that described disk (5) is tubular protrusion at the opposite side relative with its pin tenon (6).