CN201104204Y

CN201104204Y - Curve measuring rule

Info

Publication number: CN201104204Y
Application number: CNU2007200749330U
Authority: CN
Inventors: 孙鹏; 金建平
Original assignee: SHANGHAI FENGXIAN DISTRICT YOUTH ACTIVITY CENTER
Current assignee: SHANGHAI FENGXIAN DISTRICT YOUTH ACTIVITY CENTER
Priority date: 2007-09-21
Filing date: 2007-09-21
Publication date: 2008-08-20
Anticipated expiration: 2017-09-21

Abstract

The utility model relates to a curve measuring ruler belonging to stationery, in particular to a measuring instrument capable of measuring distance between nonstraight lines on a map. The curve measuring ruler is characterized in that: a handle (2) is arranged taking the center of a measuring disk (1) as a shaft, and length scales are marked along the periphery of the measuring disk (1). Further more, a fluted disk mesh type carry mechanism (3) is arranged coaxially with the measuring disk (1). When a user uses the curve measuring ruler to measure, the user holds the handle (2), aims the scale of the measuring disk (1) at zero, namely aims the '0' point of the scales at the measuring starting point, and then pushes the measuring disk (1) by holding the handle (2) to roll along a curving path to an end point of a simulation measuring point, observes and reads the numerical value on the measuring disk (1), obtains the actual value between two points on the map, finally calculates according to the remarked proportional scale to obtain the real distance between the two places. Through adding the count carry mechanism (3), ten digit bit numerical value of a measured distance can be conveniently recorded.

Description

A kind of curved measurement chi

Technical field

The utility model is a stationery, relates in particular to measure a kind of instrument that distance is measured between non-rectilinear on the map.

Background technology

Mostly road on the map, highway, railway, state boundary, shore line or the like are sinuate, though on map, marked engineer's scale, but generally can only use and calculate straight length and distance, and will be difficult to use that prior art---ruler has carried out measurements and calculations for the distance of circular arc, bending, bending etc.In the stationer's survey instrument of many kinds is arranged now, but can not find the measurer that to measure crooked lines.Therefore, need a kind of can easy measurement map on distance between crooked route.

Summary of the invention

The purpose of this utility model provides a kind of simple in structure, can measure on the map survey instrument of distance between crooked route.

The purpose of this utility model realizes just like lower device.

A kind of curved measurement chi is characterized in that being axle with a center of measuring disk one bar handle being set, along the periphery mark length scale of measuring disk.

Use when measuring, hold handle, scale on the measurement disk to zero, is about to the starting point of " 0 " point of scale to locating tab assembly, holds handle then and promote the measurement disk, roll along crooked path, to the terminal point of intending test point, observe the numerical value on the reading measure disk, draw the actual value on the point-to-point transmission map, annotate mark in the ratio of map again and calculate, can draw the actual distance of two places.

The curved measurement chi is a circular chi, and it measures irregular various curve with the calibration gauge of circumference as chi freely to roll.Because roundel rolls freely, contact point has only one, and it is also very convenient to run into turning, so correctness, the accuracy of measurement curve are higher.In addition, curved measurement chi measuring method is very simple, easy to learn, is convenient to promote the use of.

As the ruler that differs in size, measure the diameter of disk and also can make all size, to satisfy the needs of different measuring object.

Further be,, it is characterized in that disk is coaxial with measuring, and the engagement type counting carry mechanism of a fluted disc is set according to the described a kind of curved measurement chi of the technical program.

Further be, according to the described a kind of curved measurement chi of the technical program, it is characterized in that described counting carry mechanism is, with measure the coaxial minor diameter raise-position fluted disc of fixedlying connected of disk, on handle, be provided with one with the engagement of raise-position fluted disc and the large diameter carry display panel of a stable drive ratio is arranged.

After the measurement disk rotated a circle, coaxial raise-position fluted disc also rotated a circle, and carry display panel rotating certain angle in this position display ten digit value, is arranged in order a week according to a certain percentage.So, can write down and remember the ten digit value of tested distance easily.

Adopt the technical solution of the utility model, can make things convenient for, measure the distance between non-rectilinear correctly, exactly, be specially adapted to measurement distance between two points on the map, and, carry mechanism can also be increased, favourable measurement to longer distance.

Description of drawings

Fig. 1 is the structural representation of a kind of curved measurement chi of the utility model;

Fig. 2 is the structural representation of the subsidiary carry mechanism of a kind of curved measurement chi of the utility model;

Among the figure, 1 for measuring disk, and 2 is handle, and 3 is carry mechanism.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.

Embodiment one

As shown in Figure 1, a kind of curved measurement chi is characterized in that being axle with a center of measuring disk 1 one bar handle 2 being set, along the periphery mark length scale of measuring disk 1.

Use when measuring, hold handle 2, scale on the measurement disk 1 to zero, is about to the starting point of " 0 " point of scale to locating tab assembly, holds handle 2 then and promote the measurement disk, roll along crooked path, to the terminal point of intending test point, observe the numerical value on the reading measure disk 1, draw the actual value on the point-to-point transmission map, annotate mark in the ratio of map again and calculate, can draw the actual distance of two places.

The curved measurement chi is a circular chi, measures irregular various curve freely to roll.Because roundel rolls freely, contact point has only one, and it is also very convenient to run into turning, so correctness, the accuracy of measurement curve are higher.

Embodiment two

As shown in Figure 2, on the basis of Fig. 1, and measure the disk 1 coaxial minor diameter raise-position fluted disc of fixedlying connected, on handle 2, be provided with one with the engagement of raise-position fluted disc and the major diameter counting carry display panel of a stable drive ratio is arranged.

After measurement disk 1 rotated a circle, coaxial raise-position fluted disc also rotated a circle, and carry display panel rotating certain angle in this position display ten digit value, is arranged in order a week according to a certain percentage.Other using method is identical with Fig. 1, repeats no more.

Claims

1, a kind of curved measurement chi is characterized in that with a center of measuring disk (1) be axle, and a bar handle (2) is set, along the periphery mark length scale of measuring disk (1).

2, a kind of curved measurement chi according to claim 1 is characterized in that with to measure disk coaxial the engagement type counting carry mechanism (3) of a fluted disc being set.

3, a kind of curved measurement chi according to claim 2, it is characterized in that described counting carry mechanism (3) is, with measure the coaxial minor diameter raise-position fluted disc of fixedlying connected of disk (1), on handle (2), be provided with one with the engagement of raise-position fluted disc and the large diameter carry display panel of a stable drive ratio is arranged.