CN2716399Y

CN2716399Y - Safety fastener

Info

Publication number: CN2716399Y
Application number: CN 200420060562
Authority: CN
Inventors: 刘成国
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-07-30
Filing date: 2004-07-30
Publication date: 2005-08-10
Anticipated expiration: 2014-07-30

Abstract

The utility model discloses a safety fastener which belongs to the fasteners of scaffolds which are used for construction. The aim of the utility model is to provide a scaffold fastener with simple structure, durability, and safe usage. The fastener is composed of a buckle seat (1), a buckle plate (2), an axle pin (3), a bolt (4) and a screw cap (5); the buckle seat (1) is provided with a T-shaped bolt groove (7) and a via hole (8); the U-shaped buckle plate (2) is provided with an opening (10) which is used for the disassembly of the bolt and has the same direction with the axle of the tightening steel pipe (9) of the scaffold. The buckle plate (2) and the buckle seat (1) are in contact with the tightening bolt (4) and the screw cap (5) on whole plane, and therefore, the stress surface is enlarged and the abrasion is reduced greatly. Simultaneously, the direction of the opening (10) which is provided for disassembly of the bolt (4) on the U-shaped buckle plate is designed to be the same as the direction of the axle of the tightening steel pipe (9) of the scaffold, and therefore, the bolt (4) of the original fastener can not slip out any more. Furthermore, the bottom of the T-shaped bolt groove (7) which is arranged on the buckle seat (1) thickens, and can not be broken during bearing stress; the possible desquamation of the T-shaped head of the bolt is stopped. The utility model is a real safety fastener which is used for construction.

Description

A kind of safety fastener

Technical field

The utility model relates to the scaffold fastening clip of building, relates in particular to a kind of simple and easy, durable safety fastener.

Background technology

Fastener commonly used since the opening direction of Bolt dismantling with fastening scaffolding steel pipe axial vertical, the combining form of buckle and button bolt is open " goat's horn fork " and the locking of detaining bolt and nut, jaw partly is similar to taper, has the focusing surface problem of smaller; Detain the bolt nut screws the after-applied power that links closely at " goat's horn fork " problem of inclining and moving to the tip is arranged again in addition.Along with the increase of fastener access times, " goat's horn fork " weares and teares gradually, and its tapering can enlarge gradually, expands to detain to a certain degree that bolt will mouthful be deviate from from open " goat's horn fork ", buckle scatters, and causes scaffold to collapse when stressed, leads to a disaster.Another kind of fastener commonly used, buckle and Button Block rely on the interior T shape head of U type chute of Button Block to buckle bolt and nut locking, but the bottom of this structure Button Block chute is thinner, after this fastener is reused, thin position, Button Block chute bottom is fragile, and T shape head button bolt is easily deviate from, the very big potential safety hazard of same existence.In recent years, for solving the safety problem of fastener, some new designs have been arranged, wherein patent application typically has: No. 00244851.3 " fastener fast and safely ", No. 02221823.8 " fastener locking device fast and safely " etc.These application parts respectively have characteristics, but for builing industry, need safer fastener.

Summary of the invention

The purpose of this utility model is in order to solve the safety problem that fastener commonly used exists, a kind of scaffold clasp simple in structure, durable, safe in utilization to be provided.

For realizing this purpose, the safety fastener of designer design is identical by two structures up and down, form towards two halves opposite, can arbitrarily angled rotation, each partly is made up of U-shaped Button Block and the pivot pin of buckle, connection Button Block and buckle, the tommyhead bolt that is used to lock and nut thereof again, tommyhead bolt groove and through hole are arranged on this Button Block, the opening that Bolt dismantling is arranged on the U-shaped buckle, its direction with fastening scaffolding steel pipe axially identical.

The safety fastener that the utility model provides has the following advantages: buckle and Button Block contact with fastening bolt, nut whole plane, stress surface increases, its wearing and tearing reduce greatly: simultaneously since the opening direction that bolt on the U-shaped buckle is moved be designed to fastening scaffolding steel pipe axially identical, what original fastener skidded off may not exist; Tommyhead bolt trench bottom thickening on the Button Block in addition can be not damaged when stressed, stopped the possibility that bolt T shape head is deviate from, and is a kind of real safety fastener.

Description of drawings

Accompanying drawing 1 is the elevation of safety fastener of the present utility model, and Fig. 2 is a lateral view, and Fig. 3 is a top view.1 is the U-shaped Button Block among the above figure, and 2 is the U-shaped buckle, and 3 for connecting pivot pin, and 4 is fastening bolt, and 5 is nut, and 6 is bolt T shape head, and 7 is the tommyhead bolt groove, and 8 is through hole, and 9 is scaffolding steel pipe, and 10 is the opening of Bolt dismantling.

The specific embodiment

Safety fastener as accompanying drawing 1～3, identical by two structures up and down, form towards two halves opposite, can arbitrarily angled rotation, each partly is made up of U-shaped Button Block 1 and buckle 2, connection Button Block 1 and the pivot pin 3 of buckle 2, the tommyhead bolt 4 that is used to lock and nut 5 thereof again, tommyhead bolt groove 7 and through hole 8 are arranged on this Button Block 1, the opening 10 that bolt 4 dismounting is arranged on the U-shaped buckle 2, its direction with fastening scaffolding steel pipe 9 axially identical.Wherein Button Block length is 100mm, and width is 36mm, highly is 41mm, and it is the U-lag of 21mm that Button Block has radius; Buckle is a curved surface, and its negative camber radius is 21mm, and curved surface the widest part width is 50mm, thickness 3mm; The length of tommyhead bolt groove 7 is 21mm on the Button Block 1, and width is 12mm, degree of depth 25mm; The T shape head length degree of tommyhead bolt 4 is 20mm, and the diameter of bolt is 10mm, and its nut specification is M10.

Claims

1. safety fastener of forming by Button Block (1), buckle (2), pivot pin (3) and bolt (4), nut (5), it is characterized in that tommyhead bolt groove (7) and through hole (8) are arranged on this Button Block (1), the opening (10) that Bolt dismantling is arranged on the U-shaped buckle (2), its direction with fastening scaffolding steel pipe (9) axially identical.

2. safety fastener as claimed in claim 1 is characterized in that the square groove that is shaped as of described tommyhead bolt groove (7).