CN212432113U

CN212432113U - Device for measuring height, distance and breast diameter of standing tree

Info

Publication number: CN212432113U
Application number: CN202021469659.9U
Authority: CN
Inventors: 宋威
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-01-29
Anticipated expiration: 2030-07-23

Abstract

The utility model discloses a measure device of height, distance and chest footpath of standing tree, by fixed disk (1), rolling disc (2), distance pole (6) are constituteed, laser emitter (9,11) and protractor (10,12) are installed respectively to distance pole both ends, pass through support frame installation laser emitter (14) in the middle of the distance pole, rolling disc (2) can rotate around fixed disk (2), there is the angle scale on fixed disk (1), laser emitter (9,11) can rotate around bolt (8), the rotation range is 90 degrees, laser emitter (14) rotation range is 90 degrees. The device has the advantages of simple mechanism, convenient carrying, easy operation, no influence of environment, geographic factors and personal experience, high use efficiency, capability of measuring the tree height, the tree distance and the breast height of the standing tree, and great improvement on the efficiency of forestry resource investigation field work.

Description

Device for measuring height, distance and breast diameter of standing tree

Technical Field

A device for measuring the height, distance and breast diameter of standing trees.

Background

In forest resource investigation, tree height and breast height are one of the indexes to be investigated. In the field investigation, a measuring device with a simple structure and convenient operation is needed due to the complex operation environment, especially the factors of height, breast-height and the like of trees in small shifts in mountainous areas. The current main methods for measuring tree height are as follows: firstly, the tree height is measured by scanning and acquiring three-dimensional point cloud data of trees by adopting a laser radar, and the measurement technology is complex, needs to process a large amount of data, has high cost and is difficult to generally apply; secondly, the tree height is measured by adopting a precision equipment total station or an electronic theodolite, the measurement requirement can be met in precision, but the problems of heavy equipment self weight, inconvenience in carrying, difficulty in operation in mountain forests and the like exist; third, the tree height is measured by using a triangulation height method, for example, in the chinese patent publication No. CN 108195324 a, the tree height is measured by reading the values of the standard indicating rod and the angle measuring device, but at least one pair of measurement mark points needs to be provided on the outer peripheral wall of the standard indicating rod.

Disclosure of Invention

The utility model provides a height, chest footpath suitable for measure the standing tree of growing in different positions to and a simple structure, measurement of efficiency is high, portable, measuring result accurate measuring device.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a device of height, distance and chest footpath of measurement founds wood includes base, distance pole, first laser emitter, second laser emitter, first protractor and second protractor, support frame and third laser instrument.

The base includes fixed disk and rolling disc, the fixed disk includes pivot hole and angle scale.

The rotating disc comprises a rotating shaft, a fixing groove and a positioning hole and can rotate around the center of the fixing disc.

The distance rod comprises a threaded hole and a positioning pin.

The first laser emitter, the second laser emitter, the first angle measuring ruler and the second angle measuring ruler are arranged at two ends of the distance rod.

The distance between the centers of the rotating points of the first laser emitter and the second laser emitter mounted on the distance rod is 1m, and emitted laser beams are kept on the same plane.

The first laser emitter and the second laser emitter can rotate within the range of +/-90 degrees.

The angle measured by the first angle protractor is an obtuse angle formed by the intersection of the laser beam emitted by the second laser emitter and the horizontal line when the laser beam emitted by the first laser emitter is projected to the top point or the bottom end point of the tree to be measured.

The third laser can rotate by 0-90 degrees.

The beneficial effects of the utility model are that.

The device has the advantages of simple structure, small volume, light weight, convenient carrying and wide application range, and can measure the tree height, distance and breast diameter of the standing tree.

The device is simple to operate, high in measuring efficiency and free from the influence of environmental, geographic factors and personal experience, the height of the tree to be measured can be calculated only by measuring the angle values of the laser beam projected to the top end point and the bottom end point of the tree to be measured and then performing simple trigonometric function operation.

The device is not limited to measuring the height and the distance between trees, and can also be used for measuring the height and the distance of other objects, such as houses, towers and the like.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1, fig. 2 and fig. 3 are schematic diagrams of the present invention.

Fig. 4 and 5 are schematic diagrams for measuring the height of the standing timber.

Fig. 6 and 7 are schematic diagrams for measuring the height of the standing timber.

Fig. 8 and 9 are schematic diagrams for measuring the height of the standing timber.

Fig. 10 is a schematic view of measuring standing wood distance.

Fig. 11 is a schematic view of measuring the chest diameter.

In the figure, 1, a fixed disc, 2, a rotating disc, 3, a rotating shaft hole, 4, a rotating shaft, 5, a positioning hole, 6, a distance rod, 7, a positioning pin, 8, a bolt, 9, a second laser emitter, 10, a second angle measuring ruler, 11, a first laser emitter, 12, a first angle measuring ruler, 13, a support frame and 14 are provided with a third laser.

Detailed Description

[ example 1 ] measure the wood height.

As shown in fig. 1-9, the rotation point of the first laser transmitter 11 is point a, the rotation point of the second laser transmitter 9 is point B, the top end of the tree to be tested is point C1, and the bottom end of the tree to be tested is point C2. When the laser beam emitted by the first laser emitter 11 is projected to the top point C1 of the tree to be measured, the value measured by the first angle square 12 is alpha₁When the laser beam emitted by the second laser emitter 9 coincides with the projection point of the laser beam emitted by the first laser emitter 11 at the top point C1 of the tree to be measured, the value measured by the second angle square 10 is beta₁When the laser beam emitted by the first laser emitter 11 is projected to the bottom end point C2 of the tree to be measured, the value measured by the first angle square 12 is α₂When the laser beam emitted by the second laser emitter 9 coincides with the projection point of the laser beam emitted by the first laser emitter 11 at the bottom end point C2 of the tree to be measured, the value measured by the second angle square 10 is beta₂. The distance from the top end point C1 of the tree to be tested to the distance rod is H1, the distance from the top end point C2 of the tree to be tested to the distance rod is H2, and the height of the tree to be tested is H.

Figure DEST_PATH_132987DEST_PATH_IMAGE001

。

When the horizontal extension line of the distance rod 6 is positioned between the top end point and the bottom end point of the tree to be measured, the "+" is taken, and the "-" is taken for the rest.

Example 2 the distance of the standing tree from the measuring point is measured.

As shown in fig. 1-3 and 10, the rotation point of the first laser emitter 11 is point a, the rotation point of the second laser emitter 9 is point B, and the arbitrary point C0 of the trunk of the tree to be measured. When the laser beam emitted by the first laser emitter 11 is projected to the tree point C0 to be measured, the value measured by the first angle square 12 is α, and when the laser beam emitted by the second laser emitter 9 is overlapped with the laser beam emitted by the first laser emitter 11 at the projection point of the tree point C to be measured, the value measured by the second angle square 10 is β.

The distance between the tree to be measured and the rotating point of the first laser transmitter 11 is L.

Figure DEST_PATH_17767DEST_PATH_IMAGE002

[ example 3 ] the breast diameter D of the standing tree was measured.

As shown in fig. 1-11, the distance between the center of the rotation point of the first laser transmitter 11 and the centerline of the outer surface of the trunk when the tree to be tested is aligned is L0. And at the position of the root base of the tree to be detected, which is 1.3m (or 1.5 m) higher than the ascending slope, the second laser beam forms an included angle (obtuse angle) beta with the horizontal line. When the horizontal extension line of the distance rod 6 is above the bottom point of the tree to be measured, beta is calculated.

Figure DEST_PATH_845652DEST_PATH_IMAGE003

When the horizontal extension line of the distance rod 6 is below the bottom point of the tree to be measured, "+" is taken, and the remaining "-", H2 and L are obtained by the methods of example 1 and example 2, respectively.

And after determining the beta, adjusting a third laser emitter 14 to enable a third laser beam emitted by the third laser emitter 14 to coincide with a projection point of a second laser beam emitted by a second laser 9, rotating the disc 2, reading an angle gamma from the tangent of the third laser beam and one side of the tree to be measured to the tangent of the third laser beam and the other side of the tree to be measured, and calculating to obtain the breast diameter D.

Figure DEST_PATH_44552DEST_PATH_IMAGE004

Claims

1. The utility model provides a measure device of height, distance and chest footpath of standing tree, including fixed disk (1), rolling disc (2), distance pole (6), laser emitter (9,11, 14) and protractor (1, 12) are installed to distance pole (6) both ends and centre, its characterized in that rolling disc (2) can rotate around fixed disk (1), first laser emitter (11) and second laser emitter (9) can rotate around bolt (8), third laser emitter (14) are installed in distance pole (6) intermediate position through support frame (13), third laser emitter (14) can rotate around bolt (8).

2. A device for measuring the height, distance and breast diameter of standing trees according to claim 1, characterized in that the fixed disc (1) is connected with the rotating disc (2) through the rotating shaft hole (3) and the rotating shaft (4), and the fixed disc (1) is provided with angle scales.

3. A device for measuring the height, distance and breast diameter of standing trees according to claim 1, characterized in that the distance rod (6) is mounted with the second laser transmitter (9) and the first laser transmitter (11) with a centre distance of 1 m.

4. A device for measuring the height, distance and breast diameter of standing trees according to claim 1 or 3, characterized in that the second angle square (10) and the first angle square (12) measure the angle at which the laser beam emitted by the second laser emitter (9) and the first laser emitter (11), respectively, intersects the horizontal line.