CN1030410C

CN1030410C - Reinforcing bar connector

Info

Publication number: CN1030410C
Application number: CN 91103471
Authority: CN
Inventors: 钟莉; 刘滨晨; 申邦乔; 申邦武; 王学群
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-05-24
Filing date: 1991-05-24
Publication date: 1995-11-29
Anticipated expiration: 2006-05-24
Also published as: CN1058821A

Abstract

The present invention relates to a connector for steel bars, which connects steel bars together in an abutting way by coupled wires. The connector is divided into a button head type, a cone anchor type and a pressure connecting type. A connecting procedure of steel bar joints is completed as long as the end heads of steel bars to be connected are thickened or made into a cone anchor shape or pressed for connection in advance, and then connectors for the end heads of two steel bars are butted together by coupled wires at the using field of the steel bars. Thus, the fire operation for welding steel bars at a construction field is completely avoided. The present invention has the characteristics of high work efficiency, high reliability of joint connection, etc., and is suitable for the connection of various steel bars of a cast-in-situ reinforced concrete structure.

Description

Reinforcing bar connector

The invention belongs to the connector of the reinforcing bar that uses in the construction work.

Will use a large amount of reinforcing bars in construction work, the method for these reinforcing bar spreadings mostly is welding, as: group's bar weldering, overlap welding, butt welding etc.Though the quality of these welding points is reliable, efficient is very low, uses in the monolithic reinforced concrete structure especially at the scene, and is extremely inconvenient especially.

The objective of the invention is to make the joint of reinforcing bar to weld, but adopt a kind of connector, as long as connector is screwed in bar splice place, reinforcing bar is linked together reliably, have bear draw, the ability of pressure, shear stress, thereby accelerate the connection speed of reinforcing bar, avoid the work with torches of welding at the construction field (site).

Reinforcing bar connector of the present invention has three kinds of patterns:

One, Stew hair style connector;

Two, awl anchor formula connector;

Three, compression connector.

Their common feature is all to adopt the way of tightening silk, and the connector that needs joint reinforcing bar two ends is docking together, and then adopts the method for Stew hair style, awl anchor formula, compression joint type to link together between reinforcing bar and the connector respectively.

Below respectively the structure and the using method of these three kinds of connectors described:

One, Stew hair style connector:

This connector is partly formed by three:

1, anchor ring: be the circular steel sleeve of a step, the diameter of the center hole at step place equals Stew diameter of reinforcing bar, and reinforcing bar Stew head can just in time be passed through.The diameter of step equals the diameter of annular gasket.The back cut diameter of sleeve is identical with the diameter of step, and the one section car that exceeds spacer thickness has interior screw thread (screw thread), and silk is connected usefulness.

2, annular gasket: be an annular round steel sheet to be cut into two semicircles constitute.The center hole diameter of annular gasket equals the diameter (indented bars is a nominal diameter) of reinforcing bar, with the parent material of reinforcement rebar of filling the span of a man's arms of the semi-round ring shape pad after two incisions, then the Stew head of reinforcing bar just can not pass through, the outside diameter of annular gasket equals the diameter of anchor ring step, annular gasket is embedded in the anchor ring step, just the reinforcing bar anchor can be lived, the thickness of annular gasket is by the Calculation Shear decision of bearing.

There is an annular groove in the outside of annular gasket, embeds a circular elastic tape therein, tightly wales two semicircular annular gaskets, and it forward and backwardly all can not be unclamped voluntarily in work.

3, to silk: be a solid round steel screw mandrel, its screw thread (screw thread) diameter and anchor ring interior screw thread diameter suitable for reading is identical, makes anchor ring with being screwed in silk, so that transmit the joint stress of reinforcing bar.

Below in conjunction with drawings and Examples this connector is further described:

Fig. 1 is the vertical section of this connector, wherein:

The 1st,, there is the reinforcing bar of anchoring Stew head in generation;

The 2nd, anchor ring;

The 3rd, annular gasket;

The 4th, the circular elastic tape that in annular groove, embeds;

The 5th, to silk.

Fig. 2 is the vertical section of anchor ring 2.

Fig. 3 is the a-a lateral view of Fig. 2.

Fig. 4 is the section of annular gasket 3.

Fig. 5 is the b-b lateral view of Fig. 4.

The circular elastic tape of Fig. 6.

Fig. 7 is the lateral view to silk 5.

Fig. 8, the 9th, the c-c section of Fig. 7, and the sectional drawing of ground tackle.

1, earlier with two major part 1 of each comfortable termination Stew of reinforcing bar that need joint.The method of Stew head is not limit, and cold Stew, hot Stew all can.

2, the end of anchor ring 2 from the Stew head is enclosed within on the reinforcing bar 1.

3, the annular gasket 3 of two semicircles is clamped parent material of reinforcement rebar 1 in Stew head inboard.

4, anchor ring 2 is pushed to, entangled annular gasket 3, the load step fluid-tight engagement on annular gasket and anchor ring is so that transmit the tensile stress of joint.

5, use and need the anchor ring 2 of joint reinforcing bar to be screwed in together with two, till to the two ends of silk 5 that the Stew head of two reinforcing bars is firm mutually holding out against, so that transmit the compressive stress of joint by screw thread to silk 5.

So far the connection work of reinforcing bar is all finished, transmission tensile stress, compressive stress, shear stress that it can be appropriate, and it is very reliable to work.

By this operating principle as long as be threaded a section of screw thread and remove exceeding spacer thickness on the anchor ring, just can be used for making the ground tackle that a kind of prestressed reinforcement is used, as shown in Figure 9, this ground tackle processing is simple, easy to operate during use, do not crush mother metal, no slippage, very economical, safe, reliable.

Two, awl anchor formula connector:

This connector is also partly formed by three:

1, taper anchor ring: be the circular steel sleeve that an inside is bell, the axis of small circle of bell is approximately greater than bar diameter 6～8mm, taper axis of great circle suitable for reading is by the gradient and the length decision of taper, what join with taper axis of great circle suitable for reading is the sleeve that one section car has interior screw thread screw thread, and silk is connected usefulness.

2, cone-shaped clip: be made up of three heat treated intermediate plates of process, the shape of intermediate plate is: when intermediate plate was clamped reinforcing bar, its top diameter should equal the axis of small circle of taper anchor ring; Diameter at butt end should equal the suitable for reading big loop diameter of taper anchor ring; Its gradient and length should with the equating of taper anchor ring; But the slit that should leave about 3mm between the intermediate plate can not choke between the intermediate plate mutually so that in clamping process subsequently; The inboard of three intermediate plates all has the dentation groove, so that in clamping the process of reinforcing bar, the dentation groove can be nipped in the reinforcing bar gradually, prevents that reinforcing bar from sliding; Outside the three sustained height places of cone-shaped clip an annular groove is arranged, in groove, can embed a circular elastic tape near big first end, three cone-shaped clip hoops together, to guarantee that three intermediate plates are forward and backward can not the unclamping voluntarily of work.

3, to silk: be a solid round steel screw mandrel, its screw thread (screw thread) diameter and taper anchor ring axis of great circle suitable for reading is identical, makes anchor ring with being screwed in silk, so that transmit the joint stress of reinforcing bar.

Below in conjunction with drawings and Examples this connector is further described.

Figure 10 is the vertical section of this connector, wherein

The 11st, reinforcing bar to be connected;

The 12nd, the taper anchor ring;

13 is three cone-shaped clips;

The 14th, the circular elastic tape that in annular groove, embeds;

The 15th, to silk.

Figure 11 is the vertical section of taper anchor ring 12.

Figure 12 is the d-d lateral view of Figure 11.

Figure 13 is the vertical section of cone-shaped clip.

Figure 14 is the e-e lateral view of Figure 13.

Figure 15 is circular elastic tape.

Figure 16 is the lateral view to silk 15.

Figure 17 is the f-f section of Figure 16.

1, earlier with taper anchor ring 12 from the termination point casing of reinforcing bar on reinforcing bar 11.

2, will be enclosed within the termination of reinforcing bar in advance with circular elastic tape 14 hoops three intermediate plates 13 together.

3, taper anchor ring 12 is pushed to, entangled intermediate plate 13.

4, use and need the taper anchor ring 12 of joint reinforcing bar to be screwed in together with two, up to termination firm the holding out against mutually of the two ends of silk 15, reach the dentation groove that makes intermediate plate 13 and can nip till the reinforcing bar two reinforcing bars 11 by screw thread to silk 15.If tighten, the compression chord of reinforcing bar 11 terminations is reached till the design strength with the dynamometry spanner; Also can hold out against in advance with the double acting jack, pressure should reach the design strength of reinforcing bar, and then silk 15 is screwed on, till holding out against fully.

The prestressing force that holds out against has in advance been carried out in the work of this kind reinforcing bar connector when mounted, and after therefore linking together, the slippage that can not reproduce into reinforcing bar can be transmitted the drawing of reinforcing bar, pressure, shear stress, reliable working performance reliably.

Three, compression connector:

This kind connector is partly formed by two:

1, steel bushing: be a pitch circle steel, be drilled with a round hole at the one end, the hole diameter equals the diameter of reinforcing bar to be connected, so that use with the reinforcing bar crimping; The other end has the round hole that connects screw for generation.Be screwed to connect when being connected silk is used with another reinforcing bar; The centre is a bit of to be solid, the insulating course of reserving in case pressure connection terminal causes the distortion of screw end when crimping.

2, connect silk: be one section solid round steel screw mandrel, its screw thread (screw thread) diameter is identical with screw diameter on the steel bushing Tong, so that two steel bushing Tong to be connected are linked together to silk by this connection, so that the connection stress of transmission reinforcing bar.

Figure 18 is the vertical section of this connector, wherein

The 21st, reinforcing bar to be connected;

The 22nd, steel bushing Tong;

The 23rd, connect silk.

Figure 19 is the vertical section of steel bushing Tong 22.

Figure 20 is the g-g lateral view of Figure 19.

Figure 21 is the lateral view that connects silk 23.

Figure 22 is the h-h section of Figure 21.

1, the end that round hole is arranged on the steel bushing Tong 22 is enclosed within on the steel bar end to be connected, is inserted into the end always.

2, with horizontal press-connection machine the appearance of steel bushing Tong by the spacing segmentation of designing requirement push, crimping, Tong is crimped on reinforcing bar steel bushing, laterally press-connection machine can be special-purpose, also can be will cut off the edge of a knife by bar cropper to convert.

3, the steel bushing Tong with two steel bar ends crimping is screwed in the connection work of promptly having finished reinforcing bar together by connecting to silk.

The operation of this kind connector is very simple, and work is reliable especially.

Claims

1, the reinforcing bar connector that uses in a kind of building field, it is to be connected the pier nose formula connector that silk (5) is constituted with one by two anchor rings (2), four semicircle pads (3), two elastic tapes (4), it is characterized in that:

A, anchor ring are the circular steel sleeve pipes of a step, the centre bore profit diameter at front end step place equals the pier nose diameter of reinforcing bar, the reinforcing bar that has pier nose (1) can directly extend in the anchor ring (2) by the outside of this Kong Runcong anchor ring (2), and two the semicircle pads (3) that make the mother metal of pier nose reinforcing bar be positioned at step place in the anchor ring are clamped.

The rear end of b, two anchor rings (2) all is processed with the interior screw thread that connects silk (5) butt joint.

The connection of c, two anchor rings of connection (2) is to silk (5), and reinforcing bar pier nose (1) is tightly withstood at its two ends.

2, reinforcing bar connector as claimed in claim 1 is characterized in that:

By the annular gasket (3) that two semicircle pads form, its external diameter equals the diameter of step in the anchor ring, and internal diameter equals the diameter of pier nose parent material of reinforcement rebar.

3, the reinforcing bar connector that uses in a kind of building field, it is by two taper anchor rings (12), six cone-shaped clips (13), two elastic tapes (14) are connected the awl anchor formula connector that silk (15) is constituted with one, it is characterized in that:

The rearward end of a, two taper anchor rings is processed with the interior screw thread that connects silk (15) butt joint.

The termination of reinforcing bar (11) is tightly withstood in the connection of b, connection two taper anchor rings (12) to its two ends of silk (15).

4, the reinforcing bar connector that uses in a kind of building field, it is to be connected the compression connector that silk (23) is constituted with one by two steel bushings (22), it is characterized in that:

One end of a, steel bushing (22) is processed with and can packs into one section reinforcing bar, and through segmentation extruding, makes itself and reinforcing bar be crimped on together hole, and the other end is processed with the interior screw thread that connects silk (23) butt joint.

The hole end of b, steel bushing (22) and be processed with between the end of screw thread, a solid insulating course is arranged.