CN2409266Y

CN2409266Y - Compound ground tackle

Info

Publication number: CN2409266Y
Application number: CN 00200860
Authority: CN
Inventors: 虞德顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-01-21
Filing date: 2000-01-21
Publication date: 2000-12-06
Anticipated expiration: 2010-01-21

Abstract

The utility model relates to a compound ground tackle, and the compound ground tackle is formed in the mode that conical plug tackles and wedge tackles are arranged at the ends of heading steel strands or heading steel bars in series. Sleeve barrels of the conical plug tackles are sheathed on the ends of the steel strands. The conical plugs are inserted in the center of the loose ends of the steel strands which are arranged in the sleeve. The steel wires of the strands are respectively clamped in the sleeve barrels and horizontal rib slots which are arranged in the conical plugs. The sleeve barrels of the wedge anchors are sheathed on the steel strands which are arranged on the inner side of the conical plug anchors. Wedges which are in the circular arc shape are wedged in seams among the steel strands and the sleeve barrels, or the wedges are sheathed on the anchored ends of the heading steel bars in turn. The wedges which are in the circular arc shape are respectively wedged the seams between each sleeve and the steel bars, and the tackle follows the increase of the stretching force and reinforces the tackling force to reinforcing bars jointly.

Description

Compound ground tackle

A kind of compound ground tackle of being made up of tapered plug anchor and key anchor that is applicable to anchor bar concrete component prestressing force heading steel strand or heading reinforcing bar belongs to prestressed reinforced concrete structure manufacture technical field.

At present, making arrangement of reinforcement with heading steel strand or heading reinforcing bar and make prestressed concrete member, is that heading with its arrangement of reinforcement places general ground tackle or hangs in the gusset hole, arrangement of reinforcement is applied prestressed stretching force born by heading.Because heading discontinuity, its resistance are often kept out not toward very big stretching force, make the arrangement of reinforcement slip, breaks in production is not only brought economic loss, and stays hidden danger to safety in production.

The purpose of this utility model is: design and a kind ofly be contained in heading steel strand or the end reinforced compound ground tackle that is combined into of heading by tapered plug anchor and key anchor string, frictional resistance with its generation advances anchoring to heading steel strand or reinforcing bar jointly, its anchored force strengthens with the increasing of stretching force, prevent production accident effectively, guarantee product quality.

The purpose of this utility model is achieved in that by tapered plug anchor and key anchor string and is contained in heading steel strand or the end reinforced compound ground tackle of forming of heading, its tapered plug anchor is installed in the end of heading steel strand, the tapered plug sleeve set is in the steel strand termination, and the twisted wire heading is exposed outside the sleeve, conical plug is inserted into the loose central authorities of head of steel strand in the sleeve, and the steel wire of heading steel strand is installed in the horizontal rib groove on tapered plug sleeve and the conical plug.The key anchor is installed on the steel strand of tapered plug anchor inboard, and the key sleeve set of key anchor is on steel strand, and circular arc key wedge is embedded in the crack between steel strand and the key sleeve.When steel strand are applied prestressing force by stretch-draw, the key anchor is propped up by concrete component, and the tapered plug anchor carries out anchoring to steel strand under the effect of stretching force, move to key anchor direction simultaneously, the round key of extruding key anchor, strengthen the frictional resistance of key anchor to steel strand, arrangement of reinforcement carries out anchoring when common with the tapered plug anchor, reaches the purpose of not slip, safety in production.When the heading reinforcing bar is executed anchor, be that sleeve with two key anchors is sleeved on heading reinforcing bar anchored end in proper order, circular arc key wedge respectively is embedded in the crack between each sleeve and reinforcing bar, the reinforcing bar heading exposes outer anchor chock sheet, when reinforcing bar is applied stretching force, and the outer anchor chock sheet of heading extruding, generation is to the anchored force of reinforcing bar, outer key anchor inside key anchor direction under the stretching force effect moves simultaneously, again interior anchor chock sheet is compressed the same anchor-hold that produces reinforcing bar.The anchored force of the compound ground tackle of this kind is corresponding enhancing with the increasing of stretching force, gives full play to its anchoring usefulness.

The tapered plug anchor is made of tapered plug sleeve and conical plug, the length a of tapered plug sleeve is 14mm, cylindrical shell outside diameter Φ 1 is 33mm, go to the bottom circular diameter Φ 2 of bellmouth is 11.6mm, and upper base circular diameter Φ 3 is 8mm, is shaped on uniform and the horizontal rib groove that is equated by anchoring steel wire quantity on the taper hole wall, the length b of conical plug equates with length sleeve a, circular diameter Φ 4 is 11.0mm at the bottom of the tapered plug, and its awl gradient is 0.25 to 0.30, is shaped on the cone cylindrical wall and the corresponding horizontal rib groove of tapered plug sleeve lining horizontal rib groove.

The key anchor is made of key sleeve and circular arc key, the length C of key sleeve is 14mm, and cylindrical shell outside diameter D1 is 28mm, and the bellmouth circular diameter D2 that goes to the bottom is 14mm, upper base circular diameter D3 is 9mm, the length d of circular arc key equates that with the length C of sleeve its bottom outer arc radius R is 7mm, and arc length is 18mm, inner arc radius r is 4.5mm, arc length is 10mm, and key bottom thickness is 2.5mm, and key external surface gradient is 0.15 to 0.20.

The utility model has following advantage:

1. easy to manufacture, using method, cost are low.

2. solved the wall scroll steel strand and made the stretch-draw anchor difficult problem of prestress reinforcement, made steel strand make the concrete component arrangement of reinforcement and applied.

3. anchoring usefulness height ensures safety in production and product quality.

Further specify the utility model below in conjunction with accompanying drawing with embodiment.

Fig. 1 is an integral installation schematic diagram of the present utility model.

Fig. 2 looks schematic diagram for the master of the utility model tapered plug anchor.

Fig. 3 looks schematic diagram for the left side of Fig. 2.

Fig. 4 is the A of Fig. 2---the A generalized section.

Fig. 5 is the utility model conical plug schematic perspective view.

Fig. 6 looks schematic diagram for the master of the utility model key anchor.

Fig. 7 looks schematic diagram for the left side of Fig. 6.

Fig. 8 is the B of Fig. 6---the B generalized section.

Fig. 9 is the utility model circular arc key schematic perspective view.

As shown in Figure 1, be contained in a kind of compound ground tackle that heading steel strand 5 ends are combined into by tapered plug anchor 1 and key anchor 2 strings, its tapered plug anchor 1 is installed in the end of heading steel strand 5, the tapered plug sleeve 3 of tapered plug anchor is sleeved on the steel strand termination, and make the twisted wire heading expose the outside of sleeve 3, conical plug 6 is inserted into the central authorities of steel strand 5 diffusing heads in the tapered plug sleeve 3, and the steel wire of heading steel strand 5 is installed in the wire hole that is made of plug sleeve horizontal rib groove 8 and tapered plug horizontal rib groove 9 between tapered plug sleeve 3 and the conical plug 6.Key anchor 2 is installed in the inboard of tapered plug anchor, and key sleeve 4 is sleeved on the steel strand 5, and circular arc key 7 wedges are embedded in the crack between steel strand 5 and the key sleeve 4.When steel strand 5 are applied prestressing force by stretch-draw, key anchor 2 is propped up by concrete component, and tapered plug anchor 1 carries out anchoring to steel strand 5 under the effect of stretching force, direction to key anchor 2 moves simultaneously, extruding circular arc key 7 further strengthens the frictional resistance of 2 pairs of steel strand of key anchor, jointly the heading steel strand is carried out anchoring with tapered plug anchor 1.

Shown in Fig. 2,3,4,5, tapered plug anchor 1 is made of tapered plug sleeve 3 and conical plug 6, the length a of tapered plug sleeve 3 is 14mm, cylindrical shell outside diameter Φ 1 is 33mm, go to the bottom circular diameter Φ 2 of bellmouth is 11.6mm, upper base circular diameter Φ 3 is 8mm, be shaped on uniform and the horizontal rib groove 8 that is equated by anchoring steel wire quantity on the taper hole wall, the length b of conical plug 6 equates with tapered plug cover length a, disc diameter of phi 4 is 11.0mm at the bottom of the tapered plug, its awl gradient is 0.25 to 0.30, is shaped on the cone cylindrical wall and tapered plug sleeve 3 inwall horizontal rib grooves 8 corresponding horizontal rib grooves 9.

Shown in Fig. 6,7,8,9,

Key anchor 2 is made of key sleeve 4 and circular arc key 7, the length c of key sleeve 4 is 14mm, and cylindrical shell outside diameter D1 is 28mm, and the bellmouth circular diameter D2 that goes to the bottom is 14mm, upper base circular diameter D3 is 9mm, the length d of circular arc key 7 equates that with the length c of patch sleeve 2 its bottom outer arc radius R is 7mm, and arc length is 18mm, inner arc radius r is 4.50mm, arc length is 10mm, and key bottom thickness is 2.5mm, and key external surface gradient is 0.15 to 0.20.

Claims

1, a kind ofly is contained in heading steel strand or the end reinforced compound ground tackle that is combined into of heading by tapered plug anchor and key anchor string, it is characterized in that: the sleeve set of tapered plug anchor is in the steel strand termination, conical plug is inserted into the central authorities of the diffusing head of steel strand in the sleeve, the steel wire of heading steel strand is installed on respectively in tapered plug sleeve and the circle horizontal rib groove beyond the Great Wall, the sleeve set of key anchor is on the steel strand of tapered plug anchor inboard, and circular arc key wedge is embedded in the crack between steel strand and the key sleeve.

2, compound ground tackle according to claim 1, it is characterized in that: the tapered plug anchor is made of tapered plug sleeve and conical plug, the length a of tapered plug sleeve is 14mm, cylindrical shell outside diameter Φ 1 is 33mm, go to the bottom circular diameter Φ 2 of bellmouth is 11.6mm, upper base circular diameter Φ 3 is 8mm, be shaped on uniform and the horizontal rib groove that is equated by the steel wire quantity of anchoring on the taper hole wall, the length b of conical plug equates with length sleeve a, plug awl end disc diameter of phi 4 is 11.0mm, its awl gradient is 0.25 to 0.30, is shaped on the cone cylindrical wall and the corresponding horizontal rib groove of tapered plug sleeve lining horizontal rib groove.

3, compound ground tackle according to claim 1, it is characterized in that: the key anchor is made of key sleeve and circular arc key, the length C of key sleeve is 14mm, cylindrical shell outside diameter D1 is 28mm, the bellmouth circular diameter D2 that goes to the bottom is 14mm, upper base circular diameter D3 is 9mm, the length d of circular arc key equates with the length C of sleeve, its bottom outer arc radius R is 7mm, arc length is 18mm, and inner arc radius r is 4.5mm, and arc length is 10mm, key bottom thickness is 2.5mm, and key external surface gradient is 0.15 to 0.20.