CN2289621Y - Large-diameter prestressed spiral indentation steel wire for sleeper - Google Patents

Abstract

The utility model belongs to a prestressed concrete special distributed steel wire for railway sleepers. The utility model is characteized in that the surface of the steel wire is provided with three to six convex bars with trapezoid or semicircle shape, the steel wire can be oppositely pressed by two or three or four upper and lower rollers, and slant squares or irregular semicircle indentations with slant from 30 to 60 DEG can be made on the convex bars on the surface corresponding to the steel wire axial direction; the distance L between the indentations along the spiral direction is from 3 to 35 mm, bar width B is from 0.8 to 3.0 mm, and bar height H is from 0.2 to 0.5 mm; indentation length C is from 1.0 to 4.0 mm and the indentation width is equal to bar width, and indentation depth E is from 0.05 to 0.5 mm; spiral lead is from 24 to 75 mm and the spiral lead is separated to left spiral and right spiral, and diameter is from 4.8 to 8.0 mm. The utility model can be used for railway sleeper distributed bars, and force performance and bondability of the utility model precede national standard GB 5223-85 <The prestressed steel wires used for concrete>.

Description

Sleeper major diameter prestressed spiral impression steel wire

The utility model is a special-purpose arrangement of reinforcement steel wire of making the railroad sleeper prestressed concrete member.

The sleeper that railway construction is used after adopting prestressed reinforced concrete tie, is made arrangement of reinforcement with Ф 3.0mm prestressing force bright steel wire always.Because used prestressing force bright steel wire specification is less, and smooth surface, so use the steel wire radical more, cause the cloth muscle close, the sandstone compound mixes inequality, presses the ripple troublesome poeration, and concrete and steel wire bond stress are poor, and the product cost height is of poor quality.

The purpose of this utility model, being to overcome in the prestressed reinforced concrete tie to hold as arrangement of reinforcement with bright steel wire assists power poor, the use radical is many, the cloth muscle is close, the sandstone compound mixes inequality, presses the ripple trouble, shortcomings such as end product quality difference, design a kind of protruding spiral bar that has, and on protruding spiral bar, have the sleeper major diameter prestressed spiral impression steel wire of impression.

The utility model is mainly realized by following structure:

Sleeper is on light face compressor wire surface with prestressed spiral impression steel wire, makes the protruding spiral bar that has 3～6 parallel coilings by the particular manufacturing craft drawing.The direction of spiral is divided two kinds of left-handed and dextrorotation, and the form concentric spirals of spiral is apart from being 6.0～18.0mm, and lead of screw is 24～75mm.The cross section of raised ribs is trapezoidal or semicircle, and the wide 0.8～3.0mm of its muscle, muscle height are 0.2～0.5mm.And then be processed into the sleeper that on raised ribs, has impression with prestressed spiral impression steel wire by rolling.Its impression method is divided into initiatively and passive two kinds.

With the compressor wire of being processed into trapezoidal or the semi-cylindrical hill spiral bar that has, adopt the metal roll of hardness greater than HRC60, on the outer surface spiral salient muscle of spiral wire, through the corresponding compressing of two rollers or three rollers or four rollers up and down, make oblique side's body impression or irregular semicircle impression that 30 °～60 ° of relative steel wire axis direction inclinations are arranged on the lip-deep raised ribs.Distance along the hand of spiral between trace and the trace is 3～35mm.Long 1.0～the 4.0mm of each trace, trace wide (that is muscle is wide) 0.8～3.0mm, the dark 0.05～0.5mm of trace.The steel wire diameter scope is 4.8～8.0mm.

Spiral impression steel wire, when it is characterized in that impression is oblique side's body, there is the natural chamfering of 0.02～0.8mm two edges of each trace, are 90 °～120 ° obtuse angles at the bottom of two limits of impression length direction and the trace; Impression is irregular when semicircle, and radius of a circle is 0.5～3.0mm.

Spiral impression steel wire is characterized in that being pressed with impression on two planes of symmetry of spiral wire, promptly on the both direction impression is being arranged up and down; Or on 3 planes of symmetry of spiral wire, be pressed with impression, promptly impression is arranged differing on three directions of 120 °; Or on 4 planes of symmetry of spiral wire, be pressed with impression, promptly on the four direction impression is being arranged up and down.

Above-mentioned compressor wire, when described raised ribs when being trapezoidal, its trapezoidal two go up the angle (0.1～0.5) * 135 ° chamfering; When described raised ribs was semicircle, this semicircle was the semicircle of a flattening.

The prestressed spiral steel wire that has impression of the utility model design belongs to a kind of Series Steel squeeze, and range of product size is Ф 4.8～Ф 8.0mm, is to make the special-purpose arrangement of reinforcement steel wire of railroad sleeper.The mechanical property of itself is: tensile strength can reach 1470～1860MPa; Bond stress strengthens, and is better than the bright steel wire in the GB5223-85 compressor wire greatly.It is the regeneration product of using the GB5223-85 compressor wire at present.

Describe in detail below in conjunction with accompanying drawing:

Accompanying drawing 1 is a structural representation of the present utility model, accompanying drawing 2 is cross section cutaway view Amplified images of utility model, accompanying drawing 3 is impression structural representations when being oblique side's body, it is Fig. 1 b-b direction cutaway view Amplified image, accompanying drawing 4 is partial enlarged drawings of accompanying drawing 1, and accompanying drawing 5 is that impression is irregular structural representation when semicircle.

Shown in accompanying drawing 1～5, the prestressed spiral impression steel wire of the utility model design, for satisfying actual instructions for use, on former bright steel wire, design has 3～6 trapezoidal or semi-cylindrical hill muscle, walks abreast and detours (as shown in Figure 1) along the Steel Wire Surface spiral.About the direction that detours is divided two kinds, select according to instructions for use.The lead of screw A=24 that detours～75mm.Then by the up and down corresponding compressing of two rollers or three rollers or four rollers, being formed in has relative steel wire axis direction inclination β on its lip-deep raised ribs=oblique side's body impression 1-1 (as shown in Figure 3) of 30 °～60 °.Between trace and the trace along the distance L=3～35mm of the hand of spiral.The muscle of raised ribs wide (that is trace is wide) B=0.8～3.0mm, the high H=0.2～0.5mm of muscle.When raised ribs is trapezoidal, trapezoidal base angle 45 ° * 2.When raised ribs is semicircle, be the semicircle of having flattened.Single impression is oblique side's body (1-1) or irregular semicircle (1-2).Long C=1.0～the 4.0mm of trace, trace wide (wide) B=0.8～3.0mm, the dark E=0.05～0.5mm of trace with raised ribs.Single trace is irregular when semicircle, shown in (1-2) among Fig. 5, and radius of a circle r=0.5～3.0mm.Steel wire diameter D=4.8～8.0mm.

A3,45 is adopted in the making of the series of products of the utility model design ^#, 65 ^#, 80 ^#, hot-strip such as S82B, select mother metal for use greater than finished diameter 18%～20%, become to have the spiral wire of 3～6 raised ribs through the particular manufacturing craft draw, through stabilisation heat treatments such as lead bath or intermediate frequency furnace tempering.And then be processed into " sleeper with prestressed spiral impression steel wire " that raised ribs has impression by rolling.Each point metallographic structure of product cross section all should be reasonable.

Be the example explanation to produce diameter 7.0mm prestressed spiral impression steel wire below:

Diameter (the cross section combination or the calculating of directly weighing)=7.0mm weighs.

1. basic circle Ф 6.7mm;

2. external diameter Ф 7.4mm (directly measuring two salient points);

3. the high 0.35mm of muscle;

4. muscle wide (that is trace is wide) 2.0mm;

5. the long 3.6mm of trace;

6. the dark 0.20mm of trace;

7. Concentric plate is around 360 °, lead of screw 65mm;

8. there is the parallel spiral of 4 trapezoidal raised ribs to detour.

This product can select different steel to do mother metal according to designing requirement.Drawing calendering rate 〉=60% o'clock, every kind of resulting mechanical performance parameter of material was as follows:

Steel grade tensile strength percentage elongation number of bends

(MPa) (%) (inferior)

A3 700～750 5 6

45 ^# 1000 4 4

65 ^# 1270 4 4

S82B 1470～1670 4 4

Claims (7)

1. sleeper is with prestressed spiral impression steel wire, be on light face compressor wire surface, to make the protruding spiral bar that has 3～6 parallel coilings, the direction of spiral is divided left-handed and dextrorotation, the form concentric spirals distance of spiral is 6.0～18.0mm, lead of screw 24～75mm, the cross section of raised ribs is trapezoidal or semicircle, and its muscle is wide to be 0.8～3.0mm, and the muscle height is 0.2～0.5mm; It is characterized in that on the surperficial spiral salient muscle of spiral wire, being suppressed with impression; The single trace of distance L=3～35mm along the hand of spiral between impression and the impression is oblique side's body or irregular semicircle, and impression is β=30 °～60 ° of oblique angles with respect to the steel wire axis direction; Long C=1.0～the 4.0mm of each trace, the wide B=0.8～3.0mm of trace, the dark E=0.05～0.50mm of trace; The steel wire diameter scope is 4.8～8.0mm.

2. spiral impression steel wire as claimed in claim 1, when it is characterized in that impression is oblique side's body, two limits and the base of impression length direction are 90 °～120 ° obtuse angle.

3. spiral impression steel wire as claimed in claim 1, when it is characterized in that impression is oblique side's body, there is the natural chamfering of 0.02～0.80mm the edge of impression length direction.

4. spiral impression steel wire according to claim 1 is characterized in that impression is irregular when semicircle, and radius of a circle is 0.5～3.0mm.

5. spiral impression steel wire according to claim 1 is characterized in that being pressed with impression on two planes of symmetry of spiral wire.

6. spiral impression steel wire according to claim 1 is characterized in that being pressed with impression on 3 planes of symmetry of spiral wire.

7. spiral impression steel wire according to claim 1 is characterized in that being pressed with impression on 4 planes of symmetry of spiral wire.