CN203811176U - Curve surveying and mapping ruler - Google Patents

Abstract

A curve mapping ruler. At present, the curve is reduced by a common fixed-point connecting method for curve mapping in engineering measurement, the most common simple measuring tools of the method are a horizontal rule, a measuring tape and a plumb, and 2-3 matching is needed in actual measurement. Use the utility model discloses alone can accomplish the measurement operation, improve work efficiency. The main components of the device comprise: the main scale, there is the level bubble on the main scale, and the main scale bottom is equipped with a recess, installs the telescopic link in the recess, and the telescopic link is fixed in main scale one end through the pivot, installs laser instrument, battery jar in the recess, and the laser instrument is connected through the on & off switch on battery in wire and the battery jar, the main scale. The utility model discloses simple structure, easy operation is convenient.

Description

a curved measuring ruler

technical field

The utility model relates to an engineering measuring tool, which is suitable for surveying and mapping of various curves in engineering construction, especially for large-scale curves in architectural surveying and mapping, especially curves in space.

Background technique

At present, in the surveying and mapping of curves in engineering surveying, it is commonly used to measure the horizontal position and height difference of a series of feature points on the curve with a level ruler and a plumb, and restore the curve by connecting fixed points. Generally, 2 to 3 people are required to complete the actual measurement. This measurement method is time-consuming and labor-intensive, and will cause large errors in the measurement results due to human factors.

Contents of the invention

The purpose of the utility model is to provide a curve surveying and mapping ruler for engineering, which can be operated and measured by one person, and the ruler is simple in structure and easy to operate.

Above-mentioned purpose realizes through following technical scheme:

A kind of curve surveying ruler, its composition comprises: main ruler, described main ruler bottom is designed with groove, and a telescopic rod is installed in the groove, and described telescopic rod is fixed on an end of main ruler by rotating shaft; A battery tank and a laser are installed in the tank, and the laser is connected to the battery in the battery tank through wires.

Its beneficial effect is:

The main ruler is used to determine the horizontal position of each feature point on the curve, and the scale indication of the main scale is used as the X coordinate. At the same time, the laser is used to locate the vertical projection position of each feature point, and the scale indication on the wall of the telescopic rod is used as the Y coordinate. One person can operate and measure, the structure is simple, and the operation is convenient.

Description of drawings

Fig. 1 is the front structural view of the utility model.

Fig. 2 is the structure diagram of the back side of the utility model.

Fig. 3 is a sectional view of the utility model.

Detailed ways

A curve surveying ruler mainly comprises a main ruler 1 , a telescopic rod 5 and a laser 6 . The bottom of one end of the main ruler has a groove 8, and a laser device 6, a battery tank 7, and a telescopic rod 5 are installed in the groove, and the telescopic rod is connected with the same end of the main chi by a rotating shaft 4.

In the above-mentioned curve surveying ruler, one end of the main ruler is provided with a switch key 2, and the main ruler is provided with a horizontal bubble 3, and the laser is connected to the battery in the battery tank and the switch key through wires. One side of the main ruler has a scale, and the wall of the telescopic rod has a scale.

When using the above-mentioned curve surveying ruler, keep the main ruler level, and determine the horizontal position of the feature point by the main ruler. For the specific position, see the scale indication of the main ruler. On the premise of keeping the main ruler horizontal, turn on the laser, and determine the vertical position of the feature point by the laser. For the projection position, pull the telescopic rod downwards, adjust the position of the telescopic rod, and align it with the laser point. For the specific position, see the scale indication on the telescopic rod. Each measurement obtains the horizontal position and height difference of a feature point. After multiple measurements, the horizontal position and height difference of a series of feature points are found, and the curve is restored by connecting the fixed points.

Claims (2)

1. A curved surveying ruler, characterized in that: it comprises a main ruler (1), a horizontal bubble (3) is arranged on the described main ruler (1), and a groove (8) is provided at the bottom of one end of the main ruler (1) , the telescopic rod (5) is installed in the groove (8), the telescopic rod (5) is connected with the same end of the main scale (1) through the rotating shaft (4), and the laser device (6) and the battery slot are installed in the groove (8) (7), main ruler one end is provided with switch key (2). the 2. The curve surveying ruler according to claim 1, characterized in that: one side of the main ruler (1) has a scale, and the wall of the telescopic rod (5) has a scale. the