CN87100540A

CN87100540A - Fast connector for scaffold members

Info

Publication number: CN87100540A
Application number: CN 87100540
Authority: CN
Inventors: 于杰; 王秦
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-02-06
Filing date: 1987-02-06
Publication date: 1988-08-17

Abstract

The invention discloses a kind of hookup of taking the knot scaffold fast.Expertly use can be in the several seconds be connected together the node of scaffold anyhow securely.This device can also be at axial length direction overlap joint along bar.And structure is more simpler than present known scaffold coupling, and weight is lighter.This coupling is used lower lying plate and helix cam and is locked or use lower lying plate and lock bolt is locked.

Description

The present invention is a kind of scaffold lap device.This device can make scaffold vertically, vertical or other angle carries out rapid and reliable overlap joint.The bridging method of tightening than known usefulness 4 bolts has the efficient height, easy to use, lightweight advantage has same reliability simultaneously again.

With regard to the several embodiments of the present invention explanation

Fig. 1 is the vertical overlapper of scaffold

Fig. 2 is the axial overlapper of scaffold

Fig. 3 is other angle overlapper of scaffold

(1) vertically to collude plate (2) on being be that bearing pin (3) is that locking spanner (4) is that lock cam (5) is that sagging plate fixedly (7) (8) is a scaffolding pole among Fig. 1.

(1) is that axial extension bar body (2) is that bearing pin (3) is that locking spanner (4) is that lock cam (7) (8) is a scaffolding pole among Fig. 2

(1) is that upper lying plate (2) is that bearing pin (3) is that nut (4) is that cross bar clamping bolt (5) is that lower lying plate (6) is that cross bar fastening block (7) (8) is a scaffolding pole among Fig. 3.

See that lower lying plate on Fig. 1 (1) (5) catches on bar (7) inhour and rotates locking spanner (3) cam (4) that is contained on the bearing pin (2) and the radius at place, the public point of contact of bar (8) are increased and locking (7) (8) two bars.Because cam (4) curvature portion is an Archimedes' helicoid and lead angle is arranged is α=arctg s/ π d as long as tg α＜μ (μ is the petty wiping coefficient between cam (4) and bar (8)) then will self-locking once lock cam (4) and cross bar (8), so only otherwise unclamp spanner (3) then cam (4) eternal compressor arm (7) (8) is made bar (7) (8) is firm to overlap.

Two bars (7) (8) are used with quadrat method and are locked vertically among the figure (2).

Figure (3) is the method with bolt locking, equally by last lower lying plate (1) (5) catch on bar (8) tight a bolt (4) by nut (3) and fastening block (6) that (7) (8) two bars are fastening.

Claims

1, the present invention is a kind of device that can take the knot scaffold rapidly.It is characterized in that it is by the helix cam on the bearing pin or other cam and the hinged last lower lying plate composition of this bearing pin.And change with the next fastening scaffolding pole realization of the radius at the public point of contact of scaffolding pole fastening by wrench.

2, be also that according to claim 1 its feature the fastening of scaffold can also come fastening and can be by previously selected angle that two bars of scaffold are fastening by fastening bolt.

3, the lock cam according to claim 1, fast connector for scaffold members is the plane spiral of Archimedes.

4, be also that according to claim 1 and 3 its features the lock cam of fast connector for scaffold members can also make with other curve.