CN203397675U - Steel frame string of piano - Google Patents

Abstract

The utility model discloses a steel frame string of a piano. The steel frame string of the piano comprises a steel frame, and a tuning peg, a string pillow and a string pin which are fixed on the steel frame, wherein a string wound on the tuning peg is suspended on the string pin over the string pillow; 29 strings are respectively arranged in a low range string group and a middle range string group of the piano; 30 strings are arranged in a high range string group of the piano; the 29 strings in the low range comprises 13 single strings and 16 double strings; the 29 strings in the middle range comprises two double strings and 27 triple strings; the 30 strings in the high range are triple strings; dual-layer inner and outer wires are wound outside the front nine single strings in the low range; only a single-layer outer wire is wound outside the rear four single strings and 16 double strings; a single-layer outer wire is wound outside two double strings in the middle range; the 27 triple strings are baked strings; the 30 triple strings in the high range are all baked strings. By adopting the steel frame string of the piano, the piano produces excellent tones and pure tone effects in uniform transition.

Description

Iron strings procession for paino

Technical field

The utility model relates to a kind of Piano Fittings, particularly relates to a kind of iron strings procession for paino.

Background technology

The tone color tonequality of piano depends on that arrangement mode, the core string steel wire diameter of string, the ectonexine of string twine the diameter of silk (string and twine silk and form an overspun wire, the outside string without twining silk is naked string), the effectual chord length of string is, the arrangement pitches that twines long and string of overspun wire etc., by different chord lengths, string diameter, string tensile force, produce different tension force, when vibration, produce different frequencies and send different sounds.

Existing iron strings procession makes piano exist bass simple and honest not, middle bass transition inhomogeneous defect, particularly upright piano, because its string row are arranged unreasonable and science, have influence on its vibration performance, finally affect the tonequality of piano and cause between syllable transition inhomogeneous.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of new iron strings procession for paino, guarantee that bass has sufficient energy, middle bass has the tension force of uniformity transition, produces scientific and rational vibration performance, makes piano produce the tonequality of high-quality and the pure acoustical quality of even transition.

The utility model iron strings procession for paino, comprise iron row, be fixed on the peg on iron row, capotasto and extension string nail, string in peg nails on through hanging over string above capotasto, bass area string group and the middle register string group of piano are respectively arranged with two nineteen strings, the treble string group of piano is provided with 30 strings, two nineteen strings of bass area comprise 13 single strings and 16 two strings, two nineteen strings of middle register comprise two two strings and 27 three strings, 30 strings of treble are three strings, front nine single string outsides of bass area twine silk inside and outside being tied with bilayer, rear four single strings and 16 two strings outsides are only tied with individual layer and twine silk outward, two two strings outsides of middle register are tied with individual layer and twine silk outward, 27 three strings are naked string, 30 three strings of treble are naked string.

The utility model iron strings procession for paino, between the 1st to 19 string groups of wherein said bass area, string arrangement pitches is 13.1～13.9mm, between the 19th to 29 string groups, string arrangement pitches is 13.6～14.4mm, between the 1st to 13 string groups, the effect chord length of each string is according to the 1st to 13 orders since the 1st string 1215～1275mm 4～12mm to the, 13 string 1115～1175mm that successively decrease, and between the 14th to 29 string groups, the effectual chord length of each string is since the 14th string 1100～1165mm 8～20mm to the, 29 string 880～950mm that successively decrease according to the 14th to 29 orders.

The utility model iron strings procession for paino, between the 30th to 43 string groups of wherein said middle register, string arrangement pitches is 13.6～14.4mm, between the 43rd to 58 string groups, string arrangement pitches is 12.6～13.4mm, and between the 30th to 58 string groups, the effectual chord length of each string is since the 30th string 965～1035mm 18～34mm to the, 58 string 220～285mm that successively decrease according to the 30th to 58 orders.

The utility model iron strings procession for paino, between the 59th to 67 string groups of wherein said treble, string arrangement pitches is 12.6～13.4mm, between the 67th to 88 string groups, string arrangement pitches is 12.1～12.9mm, and between the 59th to 88 string groups, the effectual chord length of each string is since the 59th qin 200～270mm 2～10mm to the, 88 string 15～85mm that successively decrease according to the 59th to 88 orders.

The utility model iron strings procession for paino, between the 1st to 9 string groups of wherein said bass area, the core string steel wire diameter of each string is 1.25～1.35mm, it is since the 1st string 0.7～0.9mm 0.00～0.05mm to the, 9 string 0.40～0.60mm that successively decrease according to the 1st to 9 orders that internal layer twines filament diameter, between the 1st to 9 string groups, to twine filament diameter be since the 1st string 1.60～1.80mm 0.00～0.09mm to the, 9 string 1.2～1.4mm that successively decrease according to the 1st to 9 orders to the skin of each string, between the 10th to 13 string groups, the core string steel wire diameter of each string is 1.25～1.35mm, between the 10th to 13 string groups, to twine filament diameter be since the 10th string 1.50～1.70mm 0.00～0.15mm to the, 13 string 1.2～1.4mm that successively decrease according to the 10th to 13 orders to the skin of each string, between the 14th to 29 string groups, the core string steel wire diameter of each string is 1.0～1.15mm, between the 14th to 29 string groups, to twine filament diameter be since the 14th string 1.00～1.20mm 0.00～0.10mm to the, 29 string 0.2～0.31mm that successively decrease according to the 14th to 29 orders to the skin of each string.

The utility model iron strings procession for paino, the core string steel wire diameter of each pair of string of the 30th, 31 string groups of wherein said middle register is 0.90～1.05mm, 30th, to twine filament diameter be 0.2～0.4mm to the skin of 31 strings, and between the 32nd to 58 string groups of middle register, between each three strings and treble the 59th to 88 string groups, the core string steel wire diameter of each three strings is the 32nd to 88 to be arranged in order since 1.00～1.15mm every 2～6 strings 0.025mm to 0.75～0.85mm that successively decreases successively.

The utility model iron strings procession for paino, between the 1st to 19 string groups of wherein said bass area, string arrangement pitches is 13.3～13.7mm, between the 19th to 29 string groups, string arrangement pitches is 13.8～14.2mm, between the 1st to 13 string groups the effect chord length of each string be according to the 1st to 13 orders since the 1st string 1230～1260mm 4～12mm to the, 13 string 1130～1160mm that successively decrease, between the 14th to 29 string groups, the effectual chord length of each string is since the 14th string 1125～1150mm 8～20mm to the, 29 string 900～935mm that successively decrease according to the 14th to 29 orders.

The utility model iron strings procession for paino, between the 30th to 43 string groups of wherein said middle register, string arrangement pitches is 13.8～14.2mm, between the 43rd to 58 string groups, string arrangement pitches is 12.8～13.2mm, and between the 30th to 58 string groups, the effect chord length of string is since the 30th string 980～1015mm 18～34mm to the, 58 string 235～270mm that successively decrease according to the 30th to 58 orders.

The utility model iron strings procession for paino, between the 59th to 67 string groups of wherein said treble, string arrangement pitches is 12.8～13.2mm, between the 67th to 88 string groups, string arrangement pitches is 12.3～12.7mm, and between the 59th to 88 string groups, the effectual chord length of each string is since the 59th string 220～250mm 2～10mm to the, 88 string 45～65mm that successively decrease according to the 59th to 88 orders.

The utility model iron strings procession for paino, twines that twining of silk is long is 10～20mm apart from peg and the distance of hanging string nail for effectual chord length two ends inside and outside wherein said.

The utility model iron strings procession for paino difference from prior art is that bass area string group and middle register string group that the utility model iron strings procession for paino arranges piano are respectively two nineteen strings, the treble string group of piano is 30 strings, and the two nineteen strings that bass area is set comprise 13 single strings and 16 two strings, two nineteen strings of middle register comprise two two strings and 27 three strings, 30 strings of treble are three strings, front nine single string outsides of Bing bass area twine silk inside and outside being tied with bilayer, rear four single strings and 16 two strings outsides are only tied with individual layer and twine silk outward, two two strings outsides of middle register are tied with individual layer and twine silk outward, 27 three strings are naked string, 30 three strings of treble are naked string, make bass there is sufficient energy, middle bass has uniformity transition, the vibration that has increased string makes string pronunciation lasting, solved existing piano bass not simple and honest, the inhomogeneous defect of middle bass transition, make piano produce the tonequality of high-quality and the pure acoustical quality of even transition.

Below in conjunction with accompanying drawing, iron strings procession for paino of the present utility model is described further.

Accompanying drawing explanation

Fig. 1 is the front view of the utility model iron strings procession for paino.

Embodiment

Embodiment 1:

As shown in Figure 1, the present embodiment iron strings procession for paino comprises iron row 10, is fixed on peg 11, the capotasto 12 on iron row 10 and hangs string nail 13, hangs over string nail on around the string in peg 11 through capotasto top.Bass area string group 20 and the middle register string group 30 of piano are respectively arranged with two nineteen strings, the treble string group 40 of piano is provided with 30 strings, two nineteen strings of bass area comprise 13 single strings and 16 two strings, two nineteen strings of middle register comprise two two strings and 27 three strings, 30 strings of treble are three strings, front nine single string outsides of bass area twine silk inside and outside being tied with bilayer, rear four single strings and 16 two strings outsides are only tied with individual layer and twine silk outward, two two strings outsides of middle register are tied with individual layer and twine silk outward, 27 three strings are naked string, 30 three strings of treble are naked string.

Between the 1st to 19 string groups of bass area, string arrangement pitches is 13.5mm, between the 19th to 29 string groups, string arrangement pitches is 14mm, between the 1st to 13 string groups the effectual chord length of each string be according to the 1st to 13 orders since the 1st string 1245mm 4～12mm to the, the 13 string 1145mm that successively decrease, between the 14th to 29 string groups, the effectual chord length of each string is since the 14th string 1135mm 8～20mm to the, the 29 string 918mm that successively decrease according to the 14th to 29 orders.

Between the 30th to 31 string groups of middle register, string arrangement pitches is 14mm, between the 32nd to 58 string groups, string arrangement pitches is 13mm, between the 59th to 67 string groups of treble, string arrangement pitches is 13mm, between the 67th to 88 string groups, string arrangement pitches is 12.5mm, between the 30th to 58 string groups of middle register, the effectual chord length of each string is since the 30th string 998mm 18～34mm to the, the 58 string 250mm that successively decrease according to the 30th to 58 orders, between the 59th to 88 string groups of treble, the effectual chord length of each string is since the 59th string 235mm 2～10mm to the, the 88 string 50mm that successively decrease according to the 59th to 88 orders.

The present embodiment iron strings procession for paino, wherein, between the 1st to 9 string groups of bass area, the core string steel wire diameter of each string is 1.3mm, it is since the 1st string 0.8mm 0.00～0.05mm to the, the 9 string 0.5mm that successively decrease according to the 1st to 9 orders that internal layer twines filament diameter, between the 1st to 9 string groups, to twine filament diameter be since the 1st string 1.7mm 0.00～0.09mm to the, the 9 string 1.3mm that successively decrease according to the 1st to 9 orders to the skin of each string, between the 10th to 13 string groups, the core string steel wire diameter of each string is 1.3mm, between the 10th to 13 string groups, to twine filament diameter be since the 10th string 1.60mm 0.00～0.15mm to the, the 13 string 1.3mm that successively decrease according to the 10th to 13 orders to the skin of each string, between the 14th to 29 string groups, the core string steel wire diameter of each string is 1.075mm, between the 14th to 29 string groups, to twine filament diameter be since the 14th string 1.1mm 0.00～0.10mm to the, the 29 string 0.255mm that successively decrease according to the 14th to 29 orders to the skin of each string, the 30th of middle register, the core string steel wire diameter of each pair of string of 31 string groups is 0.975mm, the 30th, it is 0.2～0.4mm that the skin of 31 strings twines filament diameter, the core string steel wire diameter of each three strings between the 32nd to 58 string groups of middle register and each three strings between the 59th to 88 string groups of treble is to be arranged in order from 1.125mm and to start every 2～6 strings 0.025mm to 0.8mm that successively decreases successively according to the 32nd to 88 orders.

Inside and outside twine that twining of silk is long is 15mm apart from peg 11 and the distance of hanging string nail 13 for effectual chord length two ends.

Embodiment 2:

The present embodiment difference from Example 1 is, between the 1st to 19 string groups of bass area, string arrangement pitches is 13.1mm, between the 19th to 29 string groups, string arrangement pitches is 13.6mm, between the 1st to 13 string groups the effectual chord length of each string be according to the 1st to 13 orders since the 1st string 1215mm 4～12mm to the, the 13 string 1115mm that successively decrease, between the 14th to 29 string groups, the effectual chord length of each string is since the 14th string 1100mm 8～20mm to the, the 29 string 880mm that successively decrease according to the 14th to 29 orders.

Between the 30th to 43 string groups of middle register, string arrangement pitches is 13.6mm, between the 43rd to 58 string groups, string arrangement pitches is 12.6mm, between the 59th to 67 string groups of treble, string arrangement pitches is 12.6mm, between the 67th to 88 string groups, string arrangement pitches is 12.1mm, between the 30th to 58 string groups of middle register, the effectual chord length of each string is since the 30th string 965mm 18～34mm to the, the 58 string 220mm that successively decrease according to the 30th to 58 orders, between the 59th to 88 string groups of treble, the effectual chord length of each string is since the 59th string 200mm 2～10mm to the, the 88 string 15mm that successively decrease according to the 59th to 88 orders.

The present embodiment iron strings procession for paino, wherein, between the 1st to 9 string groups of bass area, the core string steel wire diameter of each string is 1.25mm, it is since the 1st string 0.7mm 0.00～0.05mm to the 9 string 0.40mm that successively decreases according to the 1st to 9 orders that internal layer twines filament diameter, between the 1st to 9 string groups, to twine filament diameter be since the 1st string 1.60mm 0.00～0.09mm to the, the 9 string 1.2mm that successively decrease according to the 1st to 9 orders to the skin of each string, between the 10th to 13 string groups, the core string steel wire diameter of each string is 1.25mm, between the 10th to 13 string groups, to twine filament diameter be since the 10th string 1.50mm 0.00～0.15mm to the, the 13 string 1.2mm that successively decrease according to the 10th to 13 orders to the skin of each string, between the 14th to 29 string groups, the core string steel wire diameter of each string is 1.0mm, between the 14th to 29 string groups, to twine filament diameter be since the 14th string 1.00mm 0.00～0.10mm to the, the 29 string 0.2mm that successively decrease according to the 14th to 29 orders to the skin of each string, the 30th of middle register, the core string steel wire diameter of each pair of string of 31 string groups is 0.90mm, the 30th, it is 0.2mm that the skin of 31 strings twines filament diameter, between the 32nd to 58 string groups of middle register, between each three strings and treble the 59th to 88 string groups, the core string steel wire diameter of each three strings is to be arranged in order from 1.00mm and to start every 2～6 strings 0.025mm to 0.75mm that successively decreases successively according to the 32nd to 88 orders.

Inside and outside twine that twining of silk is long is 10mm apart from peg 11 and the distance of hanging string nail 13 for effectual chord length two ends.

Embodiment 3:

The present embodiment place different from embodiment 1 is, between the 1st to 19 string groups of bass area, string arrangement pitches is 13.9mm, between the 19th to 29 string groups, string arrangement pitches is 14.4mm, between the 1st to 13 string groups the effectual chord length of each string be according to the 1st to 13 orders since the 1st string 1275mm 4～12mm to the, the 13 string 1175mm that successively decrease, between the 14th to 29 string groups, the effectual chord length of each string is since the 14th string 1165mm 8～20mm to the, the 29 string 950mm that successively decrease according to the 14th to 29 orders.

Between the 30th to 43 string groups of middle register, string arrangement pitches is 14.4mm, between the 43rd to 58 string groups, string arrangement pitches is 13.4mm, between the 59th to 67 string groups of treble, string arrangement pitches is 13.4mm, between the 67th to 88 string groups, string arrangement pitches is 12.9mm, between the 30th to 58 string groups of middle register, the effectual chord length of each string is since the 30th string 1035mm 18～34mm to the, the 58 string 285mm that successively decrease according to the 30th to 58 orders, between the 59th to 88 string groups of treble, the effectual chord length of each string is since the 59th string 270mm 2～10mm to the, the 88 string 85mm that successively decrease according to the 59th to 88 orders.

The present embodiment iron strings procession for paino, wherein, between the 1st to 9 string groups of bass area, the core string steel wire diameter of each string is 1.35mm, it is since the 1st string 0.9mm 0.00～0.05mm to the 9 string 0.60mm that successively decreases according to the 1st to 9 orders that internal layer twines filament diameter, between the 1st to 9 string groups, to twine filament diameter be since the 1st string 1.80mm 0.00～0.09mm to the, the 9 string 1.4mm that successively decrease according to the 1st to 9 orders to the skin of each string, between the 10th to 13 string groups, the core string steel wire diameter of each string is 1.35mm, between the 10th to 13 string groups, to twine filament diameter be since the 10th string 1.70mm 0.00～0.15mm to the, the 13 string 1.4mm that successively decrease according to the 10th to 13 orders to the skin of each string, between the 14th to 29 string groups, the core string steel wire diameter of each string is 1.15mm, between the 14th to 29 string groups, to twine filament diameter be since the 14th string 1.20mm 0.00～0.10mm to the, the 29 string 0.31mm that successively decrease according to the 14th to 29 orders to the skin of each string, the 30th of middle register, the core string steel wire diameter of each pair of string of 31 string groups is 1.05mm, the 30th, it is 0.4mm that the skin of 31 strings twines filament diameter, between the 32nd to 58 string groups of middle register, between each three strings and the 59th to 88 string groups of treble, the core string steel wire diameter of each three strings is to be arranged in order from 1.15mm and to start every 2～6 strings 0.025mm to 0.85mm that successively decreases successively according to the 32nd to 88 orders.

Inside and outside twine that twining of silk is long is 20mm apart from peg 11 and the distance of hanging string nail 13 for effectual chord length two ends.

Embodiment 4:

The difference of the present embodiment iron strings procession for paino and implementation column 1 is, between the 1st to 19 string groups of bass area, string arrangement pitches is 13.3mm, between the 19th to 29 string groups, string arrangement pitches is 13.8mm, between the 1st to 13 string groups the effect chord length of each string be according to the 1st to 13 orders since the 1st string 1230mm 4～12mm to the, the 13 string 1130mm that successively decrease, between the 14th to 29 string groups, the effectual chord length of each string is since the 14th string 1125mm 8～20mm to the, the 29 string 900mm that successively decrease according to the 14th to 29 orders.

Between the 30th to 43 string groups of middle register, string arrangement pitches is 13.8mm, between the 43rd to 58 string groups, string arrangement pitches is 12.8mm, and between the 30th to 58 string groups, the effectual chord length of each string is since the 30th string 980mm 18～34mm to the, the 58 string 235mm that successively decrease according to the 30th to 58 orders.

Between the 59th to the 67 string groups of each three strings of treble, string arrangement pitches is 12.8mm, between the 67th to 88 string groups, string arrangement pitches is 12.3mm, and between the 59th to 88 string groups, the effectual chord length of each string is since the 59th string 220mm 2～10mm to the, the 88 string 45mm that successively decrease according to the 59th to 88 orders.

The present embodiment iron strings procession for paino, wherein, between the 1st to 9 string groups of bass area, the core string steel wire diameter of each string is 1.35mm, it is since the 1st string 0.9mm 0.00～0.05mm to the 9 string 0.60mm that successively decreases according to the 1st to 9 orders that internal layer twines filament diameter, between the 1st to 9 string groups, to twine filament diameter be since the 1st string 1.80mm 0.00～0.09mm to the, the 9 string 1.4mm that successively decrease according to the 1st to 9 orders to the skin of each string, between the 10th to 13 string groups, the core string steel wire diameter of each string is 1.35mm, between the 10th to 13 string groups, to twine filament diameter be since the 10th string 1.70mm 0.00～0.15mm to the, the 13 string 1.4mm that successively decrease according to the 10th to 13 orders to the skin of each string, between the 14th to 29 string groups, the core string steel wire diameter of each string is 1.15mm, between the 14th to 29 string groups, to twine filament diameter be since the 14th string 1.20mm 0.00～0.10mm to the, the 29 string 0.31mm that successively decrease according to the 14th to 29 orders to the skin of each string, the 30th of middle register, the core string steel wire diameter of each pair of string of 31 string groups is 1.05mm, the 30th, it is 0.4mm that the skin of 31 strings twines filament diameter, between the 32nd to 58 string groups of middle register, between each three strings and the 59th to 88 string groups of treble, the core string steel wire diameter of each three strings is to be arranged in order from 1.15mm and to start every 2～6 strings 0.025mm to 0.85mm that successively decreases successively according to the 32nd to 88 orders.

Embodiment 5:

The difference of the present embodiment iron strings procession for paino and implementation column 1 is, between the 1st to 19 string groups of bass area, string arrangement pitches is 13.7mm, between the 19th to 29 string groups, string arrangement pitches is 14.2mm, between the 1st to 13 string groups the effect chord length of each string be according to the 1st to 13 orders since the 1st string 1260mm 4～12mm to the, the 13 string 1160mm that successively decrease, between the 14th to 29 string groups, the effectual chord length of each string is since the 14th string 1150mm 8～20mm to the, the 29 string 935mm that successively decrease according to the 14th to 29 orders.

Between the 30th to 43 string groups of middle register, string arrangement pitches is 14.2mm, between the 43rd to 58 string groups, string arrangement pitches is 13.2mm, and between the 30th to 58 string groups, the effectual chord length of each string is since the 30th string 1015mm 18～34mm to the, the 58 string 270mm that successively decrease according to the 30th to 58 orders.

Between the 59th to the 67 string groups of each three strings of treble, string arrangement pitches is 13.2mm, between the 67th to 88 string groups, string arrangement pitches is 12.7mm, and between the 59th to 88 string groups, the effectual chord length of each string is since the 59th string 250mm 2～10mm to the, the 88 string 65mm that successively decrease according to the 59th to 88 orders.

The present embodiment iron strings procession for paino, wherein, between the 1st to 9 string groups of bass area, the core string steel wire diameter of each string is 1.35mm, it is since the 1st string 0.9mm 0.00～0.05mm to the 9 string 0.60mm that successively decreases according to the 1st to 9 orders that internal layer twines filament diameter, between the 1st to 9 string groups, to twine filament diameter be since the 1st string 1.80mm 0.00～0.09mm to the, the 9 string 1.4mm that successively decrease according to the 1st to 9 orders to the skin of each string, between the 10th to 13 string groups, the core string steel wire diameter of each string is 1.35mm, between the 10th to 13 string groups, to twine filament diameter be since the 10th string 1.70mm 0.00～0.15mm to the, the 13 string 1.4mm that successively decrease according to the 10th to 13 orders to the skin of each string, between the 14th to 29 string groups, the core string steel wire diameter of each string is 1.15mm, between the 14th to 29 string groups, to twine filament diameter be since the 14th string 1.20mm 0.00～0.10mm to the, the 29 string 0.31mm that successively decrease according to the 14th to 29 orders to the skin of each string, the 30th of middle register, the core string steel wire diameter of each pair of string of 31 string groups is 1.05mm, the 30th, it is 0.4mm that the skin of 31 strings twines filament diameter, between the 32nd to 58 string groups of middle register, between each three strings and the 59th to 88 string groups of treble, the core string steel wire diameter of each three strings is to be arranged in order from 1.15mm and to start every 2～6 strings 0.025mm to 0.85mm that successively decreases successively according to the 32nd to 88 orders.

Above-described embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model, all should fall in the definite protection domain of the utility model claims.

Claims (10)

1. an iron strings procession for paino, comprise iron row (10), be fixed on the peg (11) on iron row (10), capotasto (12) and extension string nail (13), string in peg (11) nails on through hanging over string above capotasto, it is characterized in that: bass area string group (20) and the middle register string group (30) of piano are respectively arranged with two nineteen strings, the treble string group (40) of piano is provided with 30 strings, two nineteen strings of bass area comprise 13 single strings and 16 two strings, two nineteen strings of middle register comprise two two strings and 27 three strings, 30 strings of treble are three strings, front nine single string outsides of bass area twine silk inside and outside being tied with bilayer, rear four single strings and 16 two strings outsides are only tied with individual layer and twine silk outward, two two strings outsides of middle register are tied with individual layer and twine silk outward, 27 three strings are naked string, 30 three strings of treble are naked string.

2. iron strings procession for paino according to claim 1, it is characterized in that: between the 1st to 19 string groups of described bass area, string arrangement pitches is 13.1～13.9mm, between the 19th to 29 string groups, string arrangement pitches is 13.6～14.4mm, between the 1st to 13 string groups the effect chord length of each string according to the 1st to 13 orders since the 1st string 1215～1275mm 4～12mm to the, 13 string 1115～1175mm that successively decrease, between the 14th to 29 string groups, the effectual chord length of each string is since the 14th string 1100～1165mm 8～20mm to the, 29 string 880～950mm that successively decrease according to the 14th to 29 orders.

3. iron strings procession for paino according to claim 1 and 2, it is characterized in that: between the 30th to 43 string groups of described middle register, string arrangement pitches is 13.6～14.4mm, between the 43rd to 58 string groups, string arrangement pitches is 12.6～13.4mm, and between the 30th to 58 string groups, the effectual chord length of each string is since the 30th string 965～1035mm 18～34mm to the, 58 string 220～285mm that successively decrease according to the 30th to 58 orders.

4. iron strings procession for paino according to claim 3, it is characterized in that: between the 59th to 67 string groups of described treble, string arrangement pitches is 12.6～13.4mm, between the 67th to 88 string groups, string arrangement pitches is 12.1～12.9mm, and between the 59th to 88 string groups, the effectual chord length of each string is since the 59th qin 200～270mm 2～10mm to the, 88 string 15～85mm that successively decrease according to the 59th to 88 orders.

5. iron strings procession for paino according to claim 1 and 2, it is characterized in that: between the 59th to 67 string groups of described treble, string arrangement pitches is 12.6～13.4mm, between the 67th to 88 string groups, string arrangement pitches is 12.1～12.9mm, and between the 59th to 88 string groups, the effectual chord length of each string is since the 59th qin 200～270mm 2～10mm to the, 88 string 15～85mm that successively decrease according to the 59th to 88 orders.

6. iron strings procession for paino according to claim 4, it is characterized in that: between the 1st to 9 string groups of described bass area, the core string steel wire diameter of each string is 1.25～1.35mm, it is since the 1st string 0.7～0.9mm 0.00～0.05mm to the, 9 string 0.40～0.60mm that successively decrease according to the 1st to 9 orders that internal layer twines filament diameter, between the 1st to 9 string groups, to twine filament diameter be since the 1st string 1.60～1.80mm 0.00～0.09mm to the, 9 string 1.2～1.4mm that successively decrease according to the 1st to 9 orders to the skin of each string, between the 10th to 13 string groups, the core string steel wire diameter of each string is 1.25～1.35mm, between the 10th to 13 string groups, to twine filament diameter be since the 10th string 1.50～1.70mm 0.00～0.15mm to the, 13 string 1.2～1.4mm that successively decrease according to the 10th to 13 orders to the skin of each string, between the 14th to 29 string groups, the core string steel wire diameter of each string is 1.0～1.15mm, between the 14th to 29 string groups, to twine filament diameter be since the 14th string 1.00～1.20mm 0.00～0.10mm to the, 29 string 0.2～0.31mm that successively decrease according to the 14th to 29 orders to the skin of each string.

7. iron strings procession for paino according to claim 4, it is characterized in that: the core string steel wire diameter of each pair of string of the 30th, 31 string groups of described middle register is 0.90～1.05mm, 30th, to twine filament diameter be 0.2～0.4mm to the skin of 31 strings, and between the 32nd to 58 string groups of middle register, between each three strings and treble the 59th to 88 string groups, the core string steel wire diameter of each three strings is the 32nd to 88 to be arranged in order since 1.00～1.15mm every 2～6 strings 0.025mm to 0.75～0.85mm that successively decreases successively.

8. iron strings procession for paino according to claim 1, it is characterized in that: between the 1st to 19 string groups of described bass area, string arrangement pitches is 13.3～13.7mm, between the 19th to 29 string groups, string arrangement pitches is 13.8～14.2mm, between the 1st to 13 string groups, the effect chord length of each string is since the 1st string 1230～1260mm 4～12mm to the, 13 string 1130～1160mm that successively decrease according to the 1st to 13 orders, between the 14th to 29 string groups, the effectual chord length of each string is since the 14th string 1125～1150mm 8～20mm to the, 29 string 900～935mm that successively decrease according to the 14th to 29 orders.

9. according to the iron strings procession for paino described in claim 1 or 8, it is characterized in that: between the 30th to 43 string groups of described middle register, string arrangement pitches is 13.8～14.2mm, between the 43rd to 58 string groups, string arrangement pitches is 12.8～13.2mm, and between the 30th to 58 string groups, the effect chord length of string is since the 30th string 980～1015mm 18～34mm to the, 58 string 235～270mm that successively decrease according to the 30th to 58 orders.

10. iron strings procession for paino according to claim 9, it is characterized in that: between the 59th to 67 string groups of described treble, string arrangement pitches is 12.8～13.2mm, between the 67th to 88 string groups, string arrangement pitches is 12.3～12.7mm, and between the 59th to 88 string groups, the effectual chord length of each string is since the 59th string 220～250mm 2～10mm to the, 88 string 45～65mm that successively decrease according to the 59th to 88 orders.

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