Tree diameter at breast height measuring device for forest investigation

Abstract

The utility model provides a tree diameter at breast height measuring device for forest investigation, and relates to the technical field of tree diameter at breast height measuring devices, the tree diameter at breast height measuring device comprises a main frame rod, a measuring ruler, a rotating rod and a sliding block, the two sides of the sliding block are symmetrically and rotatably connected with a group of rolling shafts, the measuring ruler is of a double-layer structure and is fixedly connected through a positioning block, and the rotating rod is connected with the main frame rod. One end of the rotating rod is inserted into the measuring scale; the locking nut at the top end of the locking bolt can be unscrewed through the shifting block, then the main frame rod and the extending block are limited by the locking nut, so that the extending block can linearly reciprocate in the length direction of the sliding groove, the length of the main frame rod is adjusted, namely the rotating range of the rotating rod is adjusted, and the rotating rod can conveniently drive the sliding block to be attached to the outer side of a tree; and then the locking nut is tightened to lock the position, so that the problem that the caliper in the prior art is limited in size and cannot be used for measuring the diameter at breast height of an over-thick or over-thin tree by using one measuring tool at the same time is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to tree breast height diameter measuring device technical field especially, it relates to a tree breast height diameter measuring device for forest investigation. BACKGROUND

[0002] The tree breast height diameter measuring device is the equipment for measuring the breast height diameter of the tree, and the common breast height diameter measuring device includes a diameter measuring instrument, a diameter tape and an ultrasonic diameter measuring instrument, wherein, the diameter measuring instrument is simple to operate, can quickly read the measured value, and is suitable for occasions requiring fast and accurate measurement, the diameter tape is suitable for various diameter trees, and needs to be kept close to the surface of the tree during use to ensure accuracy, and the ultrasonic diameter measuring instrument has the advantage of non-contact measurement, can avoid damaging the tree, and has fast measurement speed and high precision, but the price is relatively high, and the operation is relatively complex.

[0003] The thicknesses of the trees in the forest are different, and the breast height diameters of the trees also change, the traditional breast height diameter measuring method is to measure by using a caliper, the size of the caliper is limited, and one measuring tool cannot be used to measure the breast height diameters of the trees that are too thick or too thin, therefore, the utility model provides a tree breast height diameter measuring device for forest investigation to solve the above problems. UTILITY MODEL CONTENTS

[0004] In view of the above problems, the utility model provides a tree breast height diameter measuring device for forest investigation to solve the problem that the size of the caliper is limited in the prior art, and one measuring tool cannot be used to measure the breast height diameters of the trees that are too thick or too thin.

[0005] To achieve the purpose of the utility model, the utility model realizes the following technical scheme: a tree breast height diameter measuring device for forest investigation, including main frame rod, measuring scale, rotating rod and sliding block, one side of the main frame rod is equipped with the measuring scale, both sides of the main frame rod are symmetrically equipped with the rotating rod, both ends of the measuring scale are symmetrically equipped with the sliding block inside, a group of rollers are symmetrically connected to both sides of the sliding block, the outer side of the roller is connected to the outer side of the measuring scale, the measuring scale is equipped with a double-layer structure, and is fixedly connected through the positioning block, one end of the rotating rod is inserted into the inside of the measuring scale.

[0006] Further improvement lies in that: one end of the rotating rod is hinged with an extension block, one end of the two extension blocks is inserted into both sides of the main frame rod, both ends of the measuring scale are symmetrically equipped with the stopper, and an adjusting mechanism is arranged between the extension block and the main frame rod.

[0007] Further improvement lies in that the adjusting mechanism comprises a sliding groove, a locking bolt and a locking nut, both ends of the main frame rod are symmetrically provided with the sliding groove, one end of the extension block is fixedly connected with the locking bolt, the top end of the locking bolt penetrates through the inside of the sliding groove and is threadedly connected with the locking nut.

[0008] Further improvement lies in that the top end of the locking nut is symmetrically fixedly connected with a pushing block, and the diameter of the locking nut is greater than the width of the sliding groove.

[0009] Further improvement lies in that the middle of the main frame rod is threadedly connected with a threaded rod, one end of the threaded rod is rotatably connected with a clamping block, and the shape of the clamping block is designed as a circular arc structure.

[0010] Further improvement lies in that a connecting assembly is arranged between the rotating rod and the measuring scale, the connecting assembly comprises a lower clamping plate and an upper clamping plate, the upper clamping plate is hingedly connected to the top of the lower clamping plate through a rotating shaft, one end of the upper clamping plate is fixedly connected with a fixing bolt, one end of the lower clamping plate is provided with a recess, one end of the fixing bolt penetrates through the inside of the recess and is threadedly connected with a fixing nut.

[0011] The beneficial effects of the utility model are as follows: firstly, two rotating rods are rotated to be perpendicular to the main frame rod, then the measuring scale is attached to the outside of the tree, then the rotating rod is inserted into the inside of the sliding block, the sliding block is driven to slide outside the measuring scale by rotating the rotating rod, the position of the sliding block is adjusted, one side of the two sliding blocks is attached to the outside of the tree, finally, the diameter at breast height of the tree is calculated by observing the positions of the two sliding blocks on the length table of the measuring scale, when the rotating range of the rotating rod is limited by the length of the main frame rod, the locking nut at the top end of the locking bolt is loosened by the pushing block, then the main frame rod and the extension block are limited by the locking nut, the extension block can move linearly along the length direction of the sliding groove, the length of the main frame rod is adjusted, that is, the rotating range of the rotating rod is adjusted, the sliding block driven by the rotating rod is conveniently attached to the outside of the tree, then the locking position is locked by tightening the locking nut, so that the problem that the size of the existing caliper is limited and one measuring tool cannot be used to measure the diameter at breast height of the tree with too thick or too thin diameter is solved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the front view of the utility model;

[0013] Figure 2 It is the measuring state view of the utility model;

[0014] Figure 3 It is the connecting assembly structure schematic view of the utility model;

[0015] Figure 4 It is the A place partial enlarged view of the utility model Figure 1 .

[0016] Wherein: 1, the main frame rod; 2, measuring scale; 3, rotating rod; 4, positioning block; 5, sliding block; 6, roller; 7, stop block; 8, extension block; 9, sliding groove; 10, locking bolt; 11, locking nut; 12, threaded rod; 13, clamping block; 14, connecting assembly; 15, lower clamping plate; 16, upper clamping plate; 17, rotating shaft; 18, fixing bolt; 19, groove; 20, fixing nut. DETAILED DESCRIPTION

[0017] In order to deepen the understanding of the utility model, the utility model will be further described in the following embodiments, and the embodiments are only used to explain the utility model and do not constitute a limitation on the protection scope of the utility model.

[0018] According to Figure 1 , 2 , 3, 4, the embodiment proposes a tree diameter measuring device for forest investigation, which comprises a main frame rod 1, a measuring scale 2, a rotating rod 3 and a sliding block 5, one side of the main frame rod 1 is provided with the measuring scale 2, both sides of the main frame rod 1 are symmetrically provided with the rotating rod 3, both ends of the measuring scale 2 are symmetrically provided with the sliding block 5 inside, both sides of the sliding block 5 are symmetrically connected with a group of rollers 6, the outer side of the roller 6 is connected with the outer side of the measuring scale 2, the measuring scale 2 is provided with a double-layer structure and is fixedly connected through the positioning block 4, one end of the rotating rod 3 is inserted into the inside of the measuring scale 2, one end of the rotating rod 3 is hingedly connected with the extension block 8, one end of the two extension blocks 8 is respectively inserted into both sides of the main frame rod 1, when measuring the diameter of the tree, first, the two rotating rods 3 are rotated to be perpendicular to the main frame rod 1, then the measuring scale 2 is attached to the outside of the tree, then the rotating rod 3 is inserted into the inside of the sliding block 5, the sliding block 5 is driven to slide on the outside of the measuring scale 2 by rotating the rotating rod 3, so as to adjust the position of the sliding block 5, so that one side of the two sliding blocks 5 is attached to the outside of the tree, finally, the positions of the two sliding blocks 5 on the length table of the measuring scale 2 are observed to calculate the diameter of the tree.

[0019] Both ends of the measuring scale 2 are symmetrically provided with the stop block 7, the stop block 7 can prevent the sliding block 5 from suddenly falling off from both ends of the measuring scale 2.

[0020] The adjusting mechanism is arranged between the extension block 8 and the main frame rod 1, the adjusting mechanism comprises a sliding groove 9, a locking bolt 10 and a locking nut 11, the two ends of the main frame rod 1 are symmetrically provided with the sliding groove 9, one end of the extension block 8 is fixedly connected with the locking bolt 10, the top end of the locking bolt 10 penetrates the inside of the sliding groove 9 and is threadedly connected with the locking nut 11, the top end of the locking nut 11 is symmetrically fixedly connected with a poking block, the diameter of the locking nut 11 is greater than the width of the sliding groove 9, when the rotating range of the rotating rod 3 is limited by the length of the main frame rod 1, the locking nut 11 at the top end of the locking bolt 10 can be loosened through the poking block, then the locking nut 11 limits the main frame rod 1 and the extension block 8, so that the extension block 8 can move linearly along the length direction of the sliding groove 9, the length of the main frame rod 1 is adjusted, that is, the rotating range of the rotating rod 3 is adjusted, the rotating rod 3 is conveniently driven to be attached to the outer surface of the tree through the sliding block 5, and then the locking nut 11 is tightened to the locking position.

[0021] The middle of the main frame rod 1 is threadedly connected with a threaded rod 12, one end of the threaded rod 12 is rotationally connected with a clamping block 13, the shape of the clamping block 13 is arranged as an arc structure, when the rotating rod 3, the measuring scale 2 and the main frame rod 1 wrap the tree, the threaded rod 12 is twisted to drive the clamping block 13 to move to the outside of the tree, and the sliding block 5 and the limiting of the measuring scale 2, the pressure on the two sides of the tree is applied through the measuring scale 2 and the clamping block 13, so that the two sides of the tree are clamped, so that the whole measuring device is fixed on the tree, and then the hands of people are freed, and people are more convenient to record the measurement result, when disassembling, the threaded rod 12 is twisted to drive the clamping block 13 to reset, and the rotating rod 3 can be pulled out from the inside of the sliding block 5.

[0022] The connecting assembly 14 is arranged between the rotating rod 3 and the measuring scale 2, the connecting assembly 14 comprises a lower clamping plate 15 and an upper clamping plate 16, the upper clamping plate 16 is hinged on the top of the lower clamping plate 15 through a rotating shaft 17, one end of the upper clamping plate 16 is fixedly connected with a fixing bolt 18, one end of the lower clamping plate 15 is provided with a groove 19, one end of the fixing bolt 18 penetrates out of the inside of the groove 19 and is threadedly connected with a fixing nut 20, the length direction of the two rotating rods 3 and the main frame rod 1 is parallel, the measuring scale 2 is attached to the main frame rod 1, the two ends of the measuring scale 2 are wrapped by the two connecting assemblies 14 respectively, the upper clamping plate 16 is overlapped on the top of the lower clamping plate 15, the fixing bolt 18 at one end of the upper clamping plate 16 penetrates out of the groove 19 at one end of the lower clamping plate 15, and then the fixing nut 20 at one end of the fixing bolt 18 is tightened, the fixing bolt 18 and the lower clamping plate 15 are clamped by the fixing nut 20, so as to fix the position of the upper clamping plate 16 and the lower clamping plate 15, at this time, the two connecting assemblies 14 can combine the main frame rod 1 and the measuring scale 2 into a whole, so that people can conveniently store them, when the main frame rod 1 and the measuring scale 2 are needed, the fixing nut 20 is loosened, the fixing nut 20 no longer clamps the fixing bolt 18 and the lower clamping plate 15, the upper clamping plate 16 and the lower clamping plate 15 can be separated by rotating.

[0023] The tree diameter measuring device, the two rotating rods 3 are rotated to be perpendicular to the main frame rod 1, the measuring scale 2 is attached to the outside of the tree, then the rotating rod 3 is inserted into the inside of the sliding block 5, the sliding block 5 is driven to slide on the outside of the measuring scale 2 by rotating the rotating rod 3, so as to adjust the position of the sliding block 5, so that one side of the two sliding blocks 5 is attached to the outside of the tree, finally, the positions of the two sliding blocks 5 on the length table of the measuring scale 2 are observed to calculate the diameter of the tree, when the rotating range of the rotating rod 3 is limited by the length of the main frame rod 1, the locking nut 11 at the top end of the locking bolt 10 is loosened by the knob, then the locking nut 11 limits the main frame rod 1 and the extension block 8, so that the extension block 8 can move linearly along the length direction of the sliding groove 9, so as to adjust the length of the main frame rod 1, that is, adjust the rotating range of the rotating rod 3, so that the rotating rod 3 drives the sliding block 5 to be attached to the outside of the tree, then the locking position of the locking nut 11 is tightened.

[0024] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, the above examples and descriptions in the specification are only to illustrate the principle of the present application, without departing from the spirit and scope of the present application, the present application can have various changes and improvements, these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A tree diameter at breast height (DBH) measuring device for forest surveys, comprising a main frame (1), a measuring ruler (2), a rotating rod (3), and a slider (5), characterized in that: A measuring ruler (2) is provided on one side of the main frame rod (1), and rotating rods (3) are symmetrically provided on both sides of the main frame rod (1). Sliding blocks (5) are symmetrically provided inside both ends of the measuring ruler (2). An extension block (8) is hinged to one end of the rotating rod (3), and an adjustment mechanism is provided between the extension block (8) and the main frame rod (1). The adjustment mechanism includes a slide (9), a locking bolt (10) and a locking nut (11). The two ends of the main frame rod (1) are symmetrically provided with slides (9). One end of the extension block (8) is fixedly connected with a locking bolt (10). The top end of the locking bolt (10) passes through the interior of the slide (9) and is threadedly connected with a locking nut (11).

2. The tree diameter at breast height (DBH) measuring device for forest surveys according to claim 1, characterized in that: The top of the locking nut (11) is symmetrically fixed with a lever, and the diameter of the locking nut (11) is greater than the width of the groove (9).

3. The tree diameter at breast height (DBH) measuring device for forest surveys according to claim 1, characterized in that: A set of rollers (6) are symmetrically rotated on both sides of the slider (5). The outer side of the rollers (6) is in contact with the outer side of the measuring ruler (2). The measuring ruler (2) is designed as a double-layer structure and is fixedly connected by a positioning block (4). One end of the rotating rod (3) is inserted into the inside of the measuring ruler (2).

4. The tree diameter at breast height (DBH) measuring device for forest surveys according to claim 3, characterized in that: One end of each of the two extension blocks (8) is inserted into the two sides of the main frame rod (1), and the measuring ruler (2) is provided with symmetrical stops (7) at both ends.

5. The tree diameter at breast height (DBH) measuring device for forest surveys according to claim 1, characterized in that: The main frame rod (1) is threadedly connected to a threaded rod (12) at the middle. One end of the threaded rod (12) is rotatably connected to a clamping block (13), and the clamping block (13) is designed with an arc shape.

6. The tree diameter at breast height (DBH) measuring device for forest surveys according to claim 1, characterized in that: A connecting assembly (14) is provided between the rotating rod (3) and the measuring ruler (2). The connecting assembly (14) includes a lower clamping plate (15) and an upper clamping plate (16). The upper clamping plate (16) is hinged to the top of the lower clamping plate (15) via a rotating shaft (17). A fixing bolt (18) is fixedly connected to one end of the upper clamping plate (16). A groove (19) is provided at one end of the lower clamping plate (15). One end of the fixing bolt (18) passes through the interior of the groove (19) and is threaded with a fixing nut (20).

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