CN2336389Y

CN2336389Y - Road cross section area computing rule

Info

Publication number: CN2336389Y
Application number: CN 97227568
Authority: CN
Inventors: 刘道生
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-11
Filing date: 1997-10-11
Publication date: 1999-09-01
Anticipated expiration: 2007-10-11

Abstract

The utility model relates to a computing ruler, particularly a tool for computing the cross sectional area of a road. The utility model is characterized in that the upper side of a straight ruler with moderate length and moderate width is marked with three rows of graduations which are divided according to the graduation standard of a meter li ruler, but the numbers are respectively marked according to a time, two times and four times of the natural number, and simultaneously, a cursor which can move along the longitudinal direction is arranged on the straight ruler as a measuring mark every time. When the utility model is used, according to the adopted scale of the graphics of drawing the cross section of the road, a row of suitable graduation is used on the straight ruler; one end of the graphics along the cross section, the height of the cross section is measured once every other 1 cm on the horizontal line, is marked with the cursor and is cumulatively added on the straight ruler; the m 2 number of the cross sectional area can be read out directly on the straight ruler.

Description

Road Cross Section is amassed slipstick

The utility model relates to a kind of computational tool, and particularly a kind of convenient and practical road Cross Section is amassed slipstick.

In the interior industry work of constructing road design, the calculating road Cross Section is long-pending, to calculate the geometric area in transversal section exactly, and the transversal section geometric figure is very irregular, and quantity is many, adopts the method for conventional computational geometry graphics area very loaded down with trivial details, and workload is big, very inaccurate yet, also can not find a kind of dedicated computing instrument on the home market at present.

The purpose of this utility model is that a kind of computational tool will be provided, and can directly measure the road Cross Section area of graph.

The purpose of this utility model is achieved in that the ruler of a length and width appropriateness, stroke degree that on ruler, has triplex row to divide by the scale merit of meter, but its numeral will mark in natural one times, two times, four times three kinds of ratios: (1) 0,1,2,3 ... (2) 0,2,4,6 ... (3) 0,4,8,12 ... simultaneously, a vernier that can vertically move is set, as the mark of measuring at every turn on ruler.

The utility model design concept is as follows: when drawing the road Cross Section figure, generally be painted on the rice li paper, accepted scale is: (1) transverse width and elevation all are 1: 100, and (2) transverse width is 1: 200, elevation is 1: 100, and (3) transverse width and elevation all are 1: 200; So, when adopting (1) to plant engineer's scale, horizontal wide 1cm on the figure, the area of high 1cm equals the 1m of real area ²When adopting (2) to plant engineer's scale, horizontal wide 1cm on the figure, the area of high 1cm equals the 2m of real area ²When adopting (3) to plant engineer's scale, horizontal wide 1cm on the figure, the area of high 1cm equals the 4m of real area ²

As figure two are road cross-sectional views, utilize above-mentioned special slide rule, on slipstick, select the scale of needed engineer's scale for use, along cross-sectional view one end, on horizontal line every 1cm, measure the elevation of a cross-sectional view, and vernier on the mobile computing chi, make the elevation accumulative total addition of at every turn measuring, so, this cross-sectional view is become to width is 1cm, and length is the rectangle of elevation accumulative total cms, and elevation accumulative total cms is exactly this rectangular area.According to three kinds of selected following engineer's scales together, on slipstick, can directly read the m of area of section ²Number.

The utility model is when the calculating road Cross Section is long-pending, and is easy to use, reduced loaded down with trivial details area and calculated, and improved work efficiency greatly.

Further specify below in conjunction with embodiment.

Figure one is a synoptic diagram of the present utility model.

Among the figure one, 1 ruler, 2 verniers.1a transverse width and elevation all are 1: 100 engineer's scales; 1b transverse width 1: 200, elevation are 1: 100 engineer's scale; 1c transverse width and elevation all are 1: 200 engineer's scales; 2a is a spring leaf; 2b vernier red line.

Using method: as figure two are the road Cross Section figures that will calculate.In figure two, measure 1cm to the right along horizontal line from terminal A, make the altitude traverse BB ' of transversal section, make slipstick then, direction along BB ' is placed, select required engineer's scale, make B point three aligning on slipstick " 0 " scale, vernier red line and the transversal section, ruler is motionless, moving cursor makes the red aligning of its line B ' point.Making the parallel more mobile 1cm of slipstick to the right is that CC ' locates, and makes the vernier red line aim at the C point along CC ' direction, and ruler is motionless, moving cursor makes its red line aim at C ' point, and the rest may be inferred, ruler is moved once every 1cm is parallel, to the right till can not moving to end points p.Utilize the elevation of every section of vernier accumulative total,, read the indicated numeral of vernier red line, be the area of this transversal section according to the figure accepted scale.

When ruler full-scale reading during less than the figure area of section, can write down the numeral of measuring for the first time, gradation is finished, and adds up each reading at last, is exactly square metre number of transversal section.

When the transversal section had embankment again excavation to be arranged, can fill out and dig separation was the boundary, and for example the Q point among the figure three is measured two figures respectively, was exactly the excavation and the embankment area of this transversal section.

Claims

1, a kind of slipstick, particularly a kind of long-pending instrument of road Cross Section that calculates, it is characterized in that: on the ruler of a length and width appropriateness, indicate the scale that triplex row is divided by the scale merit of meter, but its numeral is indicated respectively by natural one times, two times, four times.Simultaneously a vernier that can vertically move is set on ruler, as the mark of measuring at every turn.

2, according to the long-pending slipstick of the described road Cross Section of claim 1, its feature also is: pressing close to the ruler place at the vernier two ends has spring leaf, and structure is tight, slides freely.