CN206974592U

CN206974592U - Dulcimer string tension measuring device

Info

Publication number: CN206974592U
Application number: CN201720361119.0U
Authority: CN
Inventors: 陈永维; 董建; 余兆欣
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-04-07
Filing date: 2017-04-07
Publication date: 2018-02-06
Anticipated expiration: 2027-04-07

Abstract

A kind of dulcimer string tension measuring device, it is characterized in that including testboard, tensiometer, dulcimer organ body is being fixed on work top, one fixed plate is set on the table top of testboard side, to fix the position of tensiometer, it is the height of string according to the left string nail of dulcimer, is onboard drilled with the different duck eye of height, the drag hook of tensiometer hooks string one end through above-mentioned duck eye, and the height on tensiometer drag hook is highly consistent with tying up to the string that left string nails on.It is easy to use with simple in construction, solve the nonstandard problem of the data tested in the past.

Description

Dulcimer string tension measuring device

Technical field

It the utility model is related to national musical instruments field, and in particular to dulcimer string device for testing tensile force and method of testing.

Background technology

Current dulcimers some on the market change over time and similar problem on deformation occur, as panel arches upward, cause sound, sound There is mistake in standard.This often exceedes the endurance of dulcimer main body sympathetic response box material because of the pulling force of string, tension force, and with the time It is deformed.The method of solution is exactly to control the pulling force of string in dulcimer organ body material tolerance range in itself.

It is to the detection method of dulcimer string pulling force at present：Each installation is one small on the left and right mountain pass of qin and every group of nightstool Bearing, one end of string is hung on the string hook on the left side, then make string (its effect is by the bearing at left mountain pass, nightstool and right mountain pass Reduce frictional force), apply counterweight in the other end of string, sound is reached the height (being corrected with stroboscope) that should be determined.At this moment counterweight Weight, the tension force of string can be regarded as.This method drawback：1. data obscure unstable, it is necessary to pass through repeated multiple times test, Then it is averaged, draws data；

2. the tension force of dulcimer string should be surveyed using the thickness specification of standard pitch, effectual chord length, string as constant Examination, but the value that is drawn of string measuring method before the standard for referring to these constants so that measurement data is difficult As referential standard.

The content of the invention

The purpose of this utility model is for the features such as dulcimer volume is huger, effectual chord length easily changes, and devises one Kind dulcimer string tension measuring device, to measure actual pulling force of the string on qin body.

The utility model is achieved through the following technical solutions：

A kind of dulcimer string tension measuring device, including testboard, tensiometer 1, are fixed on work top by dulcimer organ body, Dulcimer is provided with capotasto 3, ball 4, crown cut 6, peg 7, a fixed plate 2 is set on the table top of testboard side, to fix pulling force The position of meter, it is the height of string according to the left string nail of dulcimer, is onboard drilled with the different duck eye of height, the drag hook of tensiometer is worn Cross above-mentioned duck eye and hook string one end, the height on tensiometer drag hook is highly consistent with tying up to the string that left string nails on.

The invention using the effectual chord length to have standardized be at the top of ball to mountain pass physical length as full-length, by A4= 440Hz, equal temperance mode carry out temperament, with being tested with string for the existing dulcimer of Beijing Folk Music Instrument Factory 402, have invented one Simple, the effective string device for testing tensile force of kind.

It is of the present utility model to have the technical effect that：

The utility model dulcimer string tension measuring device, have it is simple in construction, it is easy to use, solve conventional test side The nonstandard problem of data of method, effectual chord length, string diameter specification, temperament pitch changing, and single string can be drawn Pulling force data, string thickness, length, tension force difference can all change pitch.The pulling force and qin body of dynamic during performance to qin body Static tensile force is different, and the string pulling force that the utility model is measured reduces the state actually played substantially.

Brief description of the drawings

Fig. 1 is this practical new construction schematic diagram,

Wherein：Tensiometer 1, fixed plate 2, capotasto 3, ball 4, hit string point 5, crown cut 6, peg 7.

Embodiment：

As shown in drawings, a kind of dulcimer string tension measuring device, including testboard, tensiometer 1, dulcimer organ body is fixed In work top, dulcimer is provided with capotasto 3, ball 4, crown cut 6, peg 7, and a fixed plate 2 is set on the table top of testboard side, To fix the position of tensiometer, it is the height of string according to the left string nail of dulcimer, is onboard drilled with the different duck eye of height, pulling force The drag hook of meter hooks string one end through above-mentioned duck eye, height on tensiometer drag hook and ties up to the string height one that left string nails on Cause.

The utility model dulcimer string tension measuring device, including：SUNDOO SH-300N digital display types pull and push dynamometer 1 Platform, KORG OT-121 digital voice calibrators 1（Product serial number 00053117）, self-control string detection means 1.

Dulcimer organ body is fixed on work top during measurement；Left side sets fixed plate 2, to fix the position of tensiometer, root The different duck eye of height is drilled with fixed plate 2 according to the position that the left string nail of dulcimer is string, had so both facilitated the drag hook of tensiometer to wear Cross to tie string, height can be adjusted as the case may be again to ensure the Impact direction tied up on the left of string on tensiometer drag hook It is consistent with tying up to the Impact direction that left string nails on.Test string is unclamped, and pulled down from left string nail, is tied up on tensiometer drag hook； Ball is determined again to the effectual chord length at mountain pass, and ensures the stability of ball；Twisting right side peg regulation string pulling force, is stirred The string of string point 5 is hit, reaches desired value with reference to organ stop instruction pitch stable reading；The numerical value for reading tensiometer is to measure The string pulling force.

Due to dulcimer experiment qin totally 144 strings, 16 kinds of strings number, 61 horse positions, therefore each horse position is chosen in testing The carry out tension measurement of a piece string, the numerical value drawn is multiplied by chord number and obtains the pulling force of the horse position, in this approach will be all The pulling force of horse position is added, the string total pulling force measured.

Claims

1. a kind of dulcimer string tension measuring device, including testboard, tensiometer, it is characterised in that be fixed on dulcimer organ body Work top, a fixed plate is set on the table top of testboard side, is string according to the left string nail of dulcimer to fix the position of tensiometer Height, be onboard drilled with the different duck eye of height, the drag hook of tensiometer hooks string one end, pulling force through above-mentioned duck eye The height counted on drag hook is highly consistent with tying up to the string that left string nails on.