CN2575221Y

CN2575221Y - Clamping form fastening

Info

Publication number: CN2575221Y
Application number: CN 02282454
Authority: CN
Inventors: 侯川临
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-31
Filing date: 2002-10-31
Publication date: 2003-09-24
Anticipated expiration: 2012-10-31

Abstract

The utility model relates to an improvement of a special device for pipe fitting connection of an engineering scaffold. The improved pipe connecting device of the utility model is made of a circular pipe fitting which is manufactured, the inner diameter of the improved pipe connecting device is the same with the outer diameter of one connected pipe fitting, both ends of the pipe fitting are manufactured symmetrical L-shaped connecting positioning slots, and the middle of the pipe fitting is provided with a reinforced ferrule which is used for increasing the strength of bending resistance of the pipe connecting device. The utility model has the advantages of simple design, convenient operation, high safety, high stability and low cost, and the assembly and disassembly is fast when the utility model matches with the pipe fitting, both ends of which are provided with symmetrical buckling joints.

Description

Union coupling

Technical field

The utility model belongs to the improvement to the tubular light scaffold coupling arrangement that uses on building or the engineering.

Background technology

Construction work, interior finish work, or other often need be barricaded as the occasion that scaffold is convenient to construct, and takes tubular articles to be formed by connecting now basically.It is former because to take thick-walled seamless steel pipes be that material is set up scaffold, intensity height not only, good reliability, and material saving, low cost.Fast, the safety and stability of the imperial speed of dress in work progress.Yet for the relative complex structure that safety after connecting and stable union coupling are done, it often connects in work progress and will or take the auxiliary tube location that is threaded by bolton, and this just makes dress drive too complexity of process, and speed of application is slow.Take compound sleeve to connect in the light scaffold, pin hairpin location, though speed of application is fast, resistance to overturning is bad, so need do further improvement design on the structure of union coupling.

Summary of the invention

The purpose of this utility model is the primary structure improvement to light scaffold tubular articles direct connection isolated plant.It is to cooperate the improvement of pipe fitting joint and the adaptability design of carrying out.Stand and ask dress to drive the assistance that speed is fast, combination is firm, stablize, need not auxiliary or instrument, and letter is operated greatly.

Concrete design is to change the structure that the screw thread in the union coupling agent structure of cylinder type hollow tubulose or cover are inserted mode into the embedded groove type structure.Concrete design scheme is a tubing of taking internal diameter identical with the scaffold tube external diameter, be cut into cylindric, then on the side, two ends processing each twice symmetry L shaped anti-back locating slot.The width of this locating slot and the pilot pin button on the connected tube are complementary.Insert union coupling as long as the pilot pin button is aimed at L shaped groove when using like this, rotation can be located rapidly and be finished connection.In order to guarantee that union coupling has enough intensity to be provided with one section sleeve pipe in the middle of union coupling and is located at tubular lateral surface as strengthening hoop, can greatly improve the intensity of two pipe connections, prevent that stress was concentrated the destruction of causing when tube end was stressed.

How provide drawings and Examples below realizes to further specify the purpose of this utility model.

Description of drawings

Accompanying drawing 1 is a structural representation of the present utility model.

Accompanying drawing 2 is structures of corresponding supporting tube for scaffolding with this union coupling.

Accompanying drawing 3 is that A-A is to cutaway view Amplified image.

Wherein 1 is the main body of union coupling, the 2nd, and the L shaped locating slot of processing on the union coupling side, the 3rd, strengthen hoop, 3A shrinks rib, and 3B is a location punching press depression, and 4 is tube for scaffolding, the 5th, the button shape projection on the pipe fitting.

The specific embodiment

Between design scheme of the present utility model and the connecting tube 4 by L type locating slot (2) with buckle and realize cooperating between the shape projection 5, this structure has obvious axial location effect, but do not have the positioning of rotating effect, so in design, consider this ballast, the L type groove 3 of two ends symmetry will have opposite rotation direction in design, the fixing self-locking that can produce rotation direction later at two ends so just has the positioning of rotating effect.What accompanying drawing 1 provided is that the upper end is the embodiment of counterclockwise rotation direction, and it is also identical with effect that the L shaped anti-back locating slot in upper end is made its effect of dextrorotation direction, but the lower end also should be reverse.

The effect of the reinforcement hoop 3 that is provided with at union coupling middle part is the raising flexural strengths when being subjected to impact force perpendicular to axial direction at connection pipe position, prevents from that pipe end from contact with union coupling to be located in stress and to concentrate the formation destructiveness.Should form the tight cooperation that contacts with the side of union coupling 1 so strengthen hoop 3, so when making selection internal diameter is overlapped portion therein greater than the reinforcement hoop of union coupling external diameter 0.5～1.5mm, make with dedicated extruded mould then and strengthen binding round (3) along connection device outer surface contraction formation twice contraction rib 3A, strengthen hoop inner surface and union coupling lateral surface like this and form gapless fitting tightly, increased the flexural strength and the mechanical property of union coupling greatly.

At the conic shaped 3B that strengthens forming through punch process on the hoop 3 two symmetries, make the corresponding micro-protuberance that forms of union coupling same area medial surface, it is made of being to make to strengthen hoop and further form outside the integrated effect with the union coupling contact surface, form the spacing sign that pipe end inserts at the union coupling medial surface, help operating the standardization in the construction, guarantee quality of connection.

By the union coupling that above design is made, rational in infrastructure, lightly firm, the connection accurate positioning is stable, the imperial quick and safe of dress is the primary structure improvement to the industry.

Claims

1, a kind of union coupling, the cylinder type hollow tubulose is characterized in that being processed with into L type anti-back locating slot (2) in both end sides in the face of title, sets up at tubular lateral surface and strengthens hoop (3).

2, union coupling according to claim 1 is characterized in that strengthening hoop (3) neighboring and is shrunk to rib (3A) through extruding, forms and contacts cooperation with tubular lateral surface tight.

3, union coupling according to claim 1 is characterized in that strengthening hoop (3) location after punch process goes out two pyramidal pits (3B) of symmetry, makes the corresponding microprotrusion that forms of tubular medial surface.

4, according to the said union coupling of claim 1, its feature is opposite in the direction of rotation of two ends L groove, and an end is that then the other end is counterclockwise rotation direction clockwise.