Multifunctional device for measuring height, diameter at breast height and crown breadth of arbor

Abstract

The utility model provides a multifunctional device for measuring the height, the diameter at breast height and the crown breadth of an arbor, and relates to the technical field of forest tree measuring equipment. The multifunctional device for measuring the height, the diameter at breast height and the crown breadth of the arbor comprises a first stand column and a second stand column, the first stand column is provided with a pull rope type displacement sensor, and the second stand column is connected with a pull rope of the pull rope type displacement sensor. A swing rod is arranged on the second stand column, the swing rod can swing on the vertical plane relative to the second stand column, and a tilt angle sensor and a laser beam emitter capable of emitting visible light parallel to the swing rod are arranged on the swing rod. The multifunctional device for measuring the height, the diameter at breast height and the crown breadth of the arbor can conveniently measure the height, the diameter at breast height and the crown breadth of the arbor at lower cost.

Description

Technical Field

[0001] The utility model relates to the technical field of forestry measurement equipment, and in particular to a multifunctional device for measuring the height, breast diameter and crown width of trees. Background Art

[0002] In the process of forest surveys and scientific research, tree height, crown width and breast diameter are three important indicators for studying tree growth and forest stand growth changes.

[0003] At present, when measuring the crown width, the surveyor usually stands under the tree in the east, south, west and north directions in turn, and uses the method of looking up to determine the edge of the crown in each direction; then the distance from the edge of the crown to the trunk is measured with a tape measure, and the average of the length in the north-south direction and the length in the east-west direction is the crown width. The diameter at breast height is usually measured with a vernier caliper, a tape measure or a tape measure; the tree height is usually measured using the proportional method. For large trees, the above measurement method requires the cooperation of several people to complete the measurement, and the observer's eyes are higher than the measuring ruler, resulting in a large measurement error. Moreover, the current instruments can only measure single items.

[0004] At present, some equipment can collect picture information of trees to measure information such as tree height, crown width and breast diameter; however, the purchase price of such equipment is usually relatively high. Utility Model Content

[0005] To this end, the utility model proposes a multifunctional device for measuring the tree height, breast diameter and crown width of an arbor, so as to be able to measure the tree height, breast diameter and crown width of the arbor at a relatively low cost.

[0006] The technical solution of the utility model is as follows:

[0007] A multifunctional device for measuring the height, breast diameter and crown width of a tree, comprising a first column and a second column; a pull-rope displacement sensor is provided on the first column, and the second column is connected to the pull rope of the pull-rope displacement sensor; a swing rod is provided on the second column, and the swing rod can swing on a vertical plane relative to the second column, and the swing rod is provided with an inclination sensor and a laser beam emitter capable of emitting visible light parallel to the swing rod.

[0008] Furthermore, the bottom end of the first column is configured to be conical, and four legs are hinged on the outer circumference of the first column; when the bottom end of the first column is inserted into the ground, the four legs can be supported on the ground.

[0009] Furthermore, a telescopic rod is provided on the first column, the large diameter end of the telescopic rod is configured to be rotatable around the axis of the first column, and the pull-wire displacement sensor is provided on the telescopic end of the telescopic rod.

[0010] Furthermore, a top screw hole is provided on the large diameter end, and a top screw is screwed into the top screw hole.

[0011] Furthermore, an insertion rod is provided at the end of the pull rope, and an insertion hole is provided on the second column; the insertion rod can be inserted and fixed in the insertion hole, and can be removed from the insertion hole and separated from the second column.

[0012] Furthermore, the insertion hole is a threaded hole; the insertion rod includes a base fixedly connected to the pull rope, and a screw rod rotatably arranged on the base, and the screw rod is threadedly connected to the threaded hole.

[0013] The working principle and beneficial effects of the utility model are:

[0014] The utility model provides a multifunctional device for measuring the height, diameter at breast height and crown width of an arbor. By fixing a first column on one side of the arbor and by wrapping the pull rope of a pull rope type displacement sensor around the arbor, the circumference of the arbor can be measured and its diameter at breast height can be inferred. By pulling the pull rope on the second column and placing it on the four edges of the crown width of the arbor in the east, west, south and north in sequence, the width of the crown width of the arbor in the east-west direction and the north-south direction can be measured, that is, the crown width of the arbor can be measured. By irradiating the top of the arbor with light emitted by the laser transmitter on the second column, the height of the arbor can be calculated according to the inclination angle of the pendulum at this time. In summary, the multifunctional device for measuring the height, diameter at breast height and crown width of an arbor in this embodiment can conveniently measure the height, diameter at breast height and crown width of the arbor in a relatively low-cost manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 A three-dimensional diagram of a multifunctional device for measuring tree height, breast diameter and crown width provided by an embodiment of the utility model;

[0017] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0018] Figure 3 A schematic diagram of the multifunctional device for measuring tree height, breast diameter and crown width provided by the embodiment of the utility model when used to measure crown width;

[0019] Figure 4 A schematic diagram of the multifunctional device for measuring tree height, diameter at breast height and crown width provided by the embodiment of the utility model when used to measure tree height;

[0020] In the figure: 100, first column; 110, rope-type displacement sensor;

[0021] 200, second column; 210, swing rod; 220, tilt sensor; 230, laser beam emitter;

[0022] 300, telescopic rod; 310, large diameter end; 320, telescopic end;

[0023] 400, plug-in rod; 410, base; 420, screw rod;

[0024] 500, tree; DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] This embodiment provides a multifunctional device for measuring the tree height, diameter at breast height and crown width of a tree 500, which will be referred to as the multifunctional device in the following text. Figure 1 As shown, it includes a first column 100 and a second column 200; a pull-rope displacement sensor 110 is provided on the first column 100, and the second column 200 is connected to the pull rope of the pull-rope displacement sensor 110; a pendulum 210 is provided on the second column 200, and the pendulum 210 can swing on a vertical plane relative to the second column 200, and the pendulum 210 is provided with a tilt angle sensor 220 and a laser beam emitter 230 that can emit visible light parallel to the pendulum 210.

[0027] For specific structure, refer to Figure 1 As shown, the bottom end of the first column 100 of this embodiment is configured to be conical, and four legs are hinged on the outer periphery of the first column 100; when the bottom end of the first column 100 is inserted into the ground, the four legs can be supported on the ground.

[0028] In this embodiment, by setting the above-mentioned first column 100, when performing measurements, the first column 100 can be fixed by inserting the bottom end of the first column 100 into the ground next to the tree 500 and supporting the four legs on the ground, so as to facilitate various subsequent measurements.

[0029] refer to Figure 1 As shown, in this embodiment, a telescopic rod 300 is provided on the first column 100 , the large diameter end 310 of the telescopic rod 300 is configured to be able to rotate around the axis of the first column 100 , and the above-mentioned pull-wire displacement sensor 110 is provided on the telescopic end 320 of the telescopic rod 300 .

[0030] In this embodiment, by setting the telescopic rod 300, the accuracy of measuring the breast diameter, tree height and crown width of the tree 500 can be improved. Specifically, due to the influence of the tree roots, the distance between the fixed position of the first column 100 and the trunk of the tree 500 may be far. If the pull-wire displacement sensor 110 is directly fixed on the first column 100, the distance between the pull-wire displacement sensor 110 and the trunk of the tree 500 is far, and the deviation of the data such as the breast diameter of the tree 500 is large. By setting the telescopic rod 300 and setting the pull-wire displacement sensor 110 on the telescopic end 320 of the telescopic rod 300, the pull-wire displacement sensor 110 can be brought close to the trunk of the tree 500 by rotating and extending the telescopic rod 300 to obtain a more accurate measurement result.

[0031] In this embodiment, a jackscrew hole is provided on the large diameter end 310, and a jackscrew is screwed into the jackscrew hole. By providing the jackscrew hole and the jackscrew, after the telescopic rod 300 is adjusted into position, the jackscrew can be pressed against the first column 100 to maintain the position of the telescopic rod 300. It should be noted that the jackscrew hole and the jackscrew are not shown in the drawings of this embodiment because they do not affect understanding.

[0032] refer to Figure 1 and Figure 2 As shown, in this embodiment, an insertion rod 400 is provided at the end of the pull rope, and an insertion hole is provided on the second column 200; the insertion rod 400 can be inserted and fixed in the insertion hole, and can be removed from the insertion hole and separated from the second column 200.

[0033] That is, when the multifunctional device of this embodiment is used, the insertion rod 400 can be inserted into the insertion hole to connect the pull rope with the second column 200; the insertion rod 400 can also be taken out of the insertion hole to separate the pull rope from the second column 200. When the pull rope is separated from the second column 200, it is convenient to measure the diameter at breast height of the tree 500; when the pull rope is connected to the second column 200, it is convenient to measure the crown width and tree height of the tree 500. The specific measurement process can be described in detail below.

[0034] In this embodiment, reference Figure 2 As shown, the insertion hole is a threaded hole; the insertion rod 400 includes a base 410 fixedly connected to the pull rope, and a screw rod 420 rotatably arranged on the base 410, and the screw rod 420 is screwed with the threaded hole. That is, in this embodiment, the pull rope can be connected or separated from the second column 200 by screwing the screw rod 420 with the threaded hole, which is convenient for use.

[0035] In some embodiments, the connection or separation of the pull rope and the second column 200 can also be completed by interference fit between the insertion rod 400 and the insertion hole.

[0036] Based on the above overall structure, the specific use process of the multifunctional device for measuring the tree height, breast diameter and crown width of the tree 500 in this embodiment is as follows:

[0037] like Figure 3 As shown, the first column 100 is inserted into one side of the tree 500 ; the telescopic rod 300 is rotated and extended until the pull-wire displacement sensor 110 is close to the trunk of the tree 500 .

[0038] When measuring DBH:

[0039] The insertion rod 400 is separated from the second column 200, and a pull rope is pulled around the trunk of the tree 500. The length of the pull rope is recorded, which is the circumference of the tree 500. The diameter at breast height of the tree 500 can be obtained by calculation.

[0040] When measuring crown width:

[0041] The staff adjusts the laser beam emitter 230 to be parallel to the second column 200, and the laser beam emitter 230 emits visible light vertically upward. The staff determines the edge of the crown through the visible light; the staff moves the second column 200 to the following positions: Figure 3 Points A, B, C, and D are shown, and the distance between point A and point C, and the distance between point B and point D can be calculated. The average of the above two distances is the crown width of tree 500.

[0042] When measuring tree height:

[0043] The staff places the second column 200 at a position away from the tree trunk; enables the laser beam emitter 230 to emit visible light, and adjusts the swing rod 210 until the visible light emitted by the laser beam irradiates the top of the tree 500. Figure 4 As shown, the angle α of the swing bar 210 relative to the horizontal plane can be measured by the inclination sensor 220, the distance L1 between the second column 200 and the first column 100 can be measured by the pull-wire displacement sensor 110; and the known distance H1 between the pull-wire displacement sensor 110 and the ground. The height H of the tree 500 can be calculated by the formula H=H1+L1*tanα.

[0044] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional device for measuring tree height, diameter at breast height and crown width, characterized in that: The invention comprises a first column (100) and a second column (200); the first column (100) is provided with a pull-rod type displacement sensor (110), and the second column (200) is connected to the pull rope of the pull-rod type displacement sensor (110); the second column (200) is provided with a swing rod (210), the swing rod (210) can swing on a vertical plane relative to the second column (200), and the swing rod (210) is provided with an inclination sensor (220) and a laser beam emitter (230) capable of emitting visible light parallel to the swing rod (210).

2. The multifunctional device for measuring tree height, diameter at breast height and crown width according to claim 1, characterized in that: The bottom end of the first column (100) is configured to be conical, and four legs are hinged on the outer circumference of the first column (100); when the bottom end of the first column (100) is inserted into the ground, the four legs can be supported on the ground.

3. The multifunctional device for measuring tree height, diameter at breast height and crown width according to claim 2, characterized in that: A telescopic rod (300) is provided on the first column (100); the large diameter end (310) of the telescopic rod (300) is arranged to be rotatable around the axis of the first column (100); and the pull-wire displacement sensor (110) is provided on the telescopic end (320) of the telescopic rod (300).

4. The multifunctional device for measuring tree height, diameter at breast height and crown width according to claim 3, characterized in that: A top screw hole is provided on the large diameter end (310), and a top screw is screwed into the top screw hole.

5. The multifunctional device for measuring tree height, diameter at breast height and crown width according to claim 1, characterized in that: An insertion rod (400) is provided at the end of the pull rope, and an insertion hole is provided on the second column (200); the insertion rod (400) can be inserted and fixed in the insertion hole, and can be removed from the insertion hole to be separated from the second column (200).

6. The multifunctional device for measuring tree height, diameter at breast height and crown width according to claim 5, characterized in that: The insertion hole is a threaded hole; the insertion rod (400) comprises a base (410) fixedly connected to the pull rope, and a screw rod (420) rotatably arranged on the base (410), and the screw rod (420) is threadedly connected to the threaded hole.

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