Rapid measuring device for diameter at breast height of tree

Abstract

The utility model discloses a rapid measuring device for the diameter at breast height of a tree, which comprises a measuring assembly, the measuring assembly comprises an angle sensor, a lower supporting rod, a gear rod, three gear holes, a rotating shaft, a first rotating cylinder, a second rotating cylinder, a first rotating arm and a second rotating arm, and the gear rod is fixedly connected with the middle part of the outer side wall of the lower supporting rod. According to the utility model, a tested tree is clamped between the first rotating arm and the second rotating arm and is pushed forwards, so that the four positioning wheels are attached to the outer wall of the tested tree at the same time, and meanwhile, the first rotating arm and the second rotating arm are also attached to the outer wall of the tested tree; therefore, the two angle sensors measure angle data of rotation of the first rotating arm and the second rotating arm after attachment to separation, the data processing module automatically calculates the diameter at breast height of the tree according to the angle data and stores a calculation result to the data storage module, two workers do not need to cooperate for measurement, measurement can be completed by one person, manpower is saved, and the measurement efficiency is improved. And the measuring speed is high, and the measuring precision is high.

Description

Technical Field:

[0001] The utility model relates to the technical field of forestry surveys, and specifically relates to a device for quickly measuring the diameter at breast height of trees. Background Art:

[0002] As an important terrestrial ecosystem, forests play an extremely important role in maintaining biodiversity, regulating the global climate, enhancing carbon storage, etc. The basis of forestry development is forest resources, and the status of forest resources is also an important standard for measuring the level of forestry development. How to quickly, accurately, and efficiently obtain forest resource information and achieve scientific management and sustainable utilization of forest resources is the key focus of forestry workers. In forestry surveys, the diameter at breast height of trees, as an important index parameter, is an important basis for establishing forest monitoring plots and evaluating the basic conditions of forest trees;

[0003] At present, in the forest resource inventory in China, contact tools such as diameter tapes, measuring tapes, calipers, and wheel calipers are mainly used to measure the diameter at breast height of trees. When using a measuring tape for measurement, generally two workers are required to cooperate. One person conducts the measurement, and the other person is responsible for recording the measurement data. Such a traditional operation method has problems of low measurement speed and insufficient measurement accuracy. Therefore, a device for quickly measuring the diameter at breast height of trees is proposed. Content of the Utility Model:

[0004] The purpose of the utility model is to provide a device for quickly measuring the diameter at breast height of trees to solve one of the problems raised in the above background art.

[0005] The utility model is implemented by the following technical solution: A device for quickly measuring the diameter at breast height of trees includes a measurement assembly. The measurement assembly includes an angle sensor, a lower support rod, a stop rod, three stop holes, a rotating shaft, a first rotating cylinder, a second rotating cylinder, a first rotating arm, and a second rotating arm. The middle part of the outer side wall of the lower support rod is fixedly connected with a stop rod. The upper surface of the stop rod is provided with three stop holes. The inner side wall of the stop hole is slidably connected with a rotating shaft. The upper part of the outer side wall of the rotating shaft is fixedly connected with two angle sensors. The input ends of the two angle sensors are respectively fixedly connected with a first rotating cylinder and a second rotating cylinder. The bottom of the first rotating cylinder is rotatably connected to the top of the second rotating cylinder. One side of the outer side wall of the first rotating cylinder is fixedly connected with a first rotating arm. The lower part of the rear surface of the first rotating arm is slidably connected to the outer side wall of the second rotating cylinder. One side of the outer side wall of the second rotating cylinder is fixedly connected with a second rotating arm. The upper part of the rear surface of the second rotating arm is slidably connected to the outer side wall of the first rotating cylinder.

[0006] As a further preference of this technical solution: both ends of the upper part of the outer side wall of the lower support rod are fixedly connected with connecting rods, the tops of the two connecting rods are fixedly connected with an upper support rod, both sides of the upper part of the outer side wall of the lower support rod and both sides of the lower part of the outer side wall of the upper support rod are correspondingly fixedly connected with positioning shafts, and the outer side walls of the four positioning shafts are rotatably connected with positioning wheels.

[0007] As a further preference of this technical solution: a controller is fixedly connected to the middle of the outer side wall of the upper support rod through a snap ring, a data acquisition module, a data processing module and a data storage module are arranged inside the controller, the output end of the angle sensor is electrically connected to the input end of the data acquisition module, the output end of the data acquisition module is electrically connected to the input end of the data processing module, and the output end of the data processing module is electrically connected to the input end of the data storage module.

[0008] As a further preference of this technical solution: limit rings are fixedly connected to one ends of the outer side walls of the four positioning shafts close to each other, limit grooves are formed at the centers of the ends of the four positioning wheels close to each other, and the outer side walls of the limit rings are rotatably connected to the inner side walls of the limit grooves.

[0009] As a further preference of this technical solution: first chutes are formed on the front surfaces of the first swivel arm and the second swivel arm, first sliders are slidably connected to the inner side walls of the two first chutes, a sliding cylinder is fixedly connected to the front surface of the first slider, a first limiting ring is fixedly connected to the front part of the inner side wall of the first chute, the outer side wall of the sliding cylinder is slidably connected to the inner side wall of the first limiting ring, the outer side of the front surface of the first slider is in close contact with the rear surface of the first limiting ring, a second slider is slidably connected to the inner side wall of the sliding cylinder, a sliding rod is fixedly connected to the front surface of the second slider, a second limiting ring is fixedly connected to the front part of the inner side wall of the sliding cylinder, the outer side wall of the sliding rod is slidably connected to the inner side wall of the second limiting ring, and the outer side of the front surface of the second slider is in close contact with the rear surface of the second limiting ring.

[0010] As a further preference of this technical solution: a touch screen is arranged on the rear surface of the controller.

[0011] As a further preference of this technical solution: U-shaped grips are fixedly connected to both sides of the rear surfaces of the lower support rod and the upper support rod.

[0012] As a further preference of this technical solution: anti-slip sleeves are fixedly connected to the middle parts of the outer side walls of the U-shaped grips.

[0013] Advantages of the present utility model: By clamping the measured tree between the first rotating arm and the second rotating arm and pushing it forward, the four positioning wheels are simultaneously brought into contact with the outer wall of the measured tree. At the same time, the first rotating arm and the second rotating arm are also in contact with the outer wall of the measured tree. Thus, the two angle sensors measure the angular data of the rotation of the first rotating arm and the second rotating arm from contact to separation. The data processing module automatically calculates the tree diameter at breast height based on the angular data and stores the calculation result in the data storage module. It is not necessary for two workers to cooperate in the measurement, and one person can complete the measurement, saving labor, with a fast measurement speed and high measurement accuracy. Description of the Drawings:

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of one perspective of the present utility model;

[0016] Figure 2 It is a schematic structural diagram of another perspective of the present utility model;

[0017] Figure 3 It is a schematic structural diagram of the positioning shaft and the limiting ring of the present utility model;

[0018] Figure 4 It is a schematic structural diagram of the rotating shaft and the angle sensor of the present utility model;

[0019] Figure 5 It is a schematic internal structural diagram of the controller of the present utility model;

[0020] Figure 6 It is a schematic structural diagram of the sliding cylinder and the sliding rod of the present utility model;

[0021] Figure 7 It is a schematic diagram of the principle of measuring the tree diameter at breast height of the present utility model.

[0022] In the figure: 1. Measuring component; 10. Angle sensor; 11. Lower support rod; 12. Gear lever; 13. Gear holes; 14. Rotating shaft; 15. First rotating cylinder; 16. Second rotating cylinder; 17. First rotating arm; 18. Second rotating arm; 19. Connecting rod; 20. Upper support rod; 21. Positioning shaft; 22. Positioning wheel; 23. Snap ring; 24. Controller; 25. Data acquisition module; 26. Data processing module; 27. Limiting ring; 28. Limiting groove; 29. First sliding groove; 30. First slider; 31. Sliding cylinder; 32. First limiting ring; 33. Second slider; 34. Slide bar; 35. Second limiting ring; 36. Touch screen; 37. U-shaped grip; 38. Anti-slip sleeve; 39. Data storage module. Detailed implementation manners:

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Embodiment

[0025] Please refer to Figures 1-6 , the present invention provides a technical solution: a device for quickly measuring the diameter at breast height of a tree, including a measuring component 1. The measuring component 1 includes an angle sensor 10, a lower support rod 11, a gear lever 12, three gear holes 13, a rotating shaft 14, a first rotating cylinder 15, a second rotating cylinder 16, a first rotating arm 17 and a second rotating arm 18. The middle part of the outer side wall of the lower support rod 11 is fixedly connected with a gear lever 12. The upper surface of the gear lever 12 is provided with three gear holes 13. The inner side wall of the gear hole 13 is slidably connected with a rotating shaft 14. The upper part of the outer side wall of the rotating shaft 14 is fixedly connected with two angle sensors 10. The input ends of the two angle sensors 10 are respectively fixedly connected with a first rotating cylinder 15 and a second rotating cylinder 16. The bottom of the first rotating cylinder 15 is rotatably connected to the top of the second rotating cylinder 16. One side of the outer side wall of the first rotating cylinder 15 is fixedly connected with a first rotating arm 17. The lower part of the rear surface of the first rotating arm 17 is slidably connected to the outer side wall of the second rotating cylinder 16. One side of the outer side wall of the second rotating cylinder 16 is fixedly connected with a second rotating arm 18. The upper part of the rear surface of the second rotating arm 18 is slidably connected to the outer side wall of the first rotating cylinder 15. When not in use, the first rotating arm 17 and the second rotating arm 18 are rotated simultaneously so that the adjacent sides of the first rotating arm 17 and the second rotating arm 18 are in contact, thereby facilitating storage.

[0026] In this embodiment, specifically: both ends of the upper part of the outer side wall of the lower support rod 11 are fixedly connected with connecting rods 19. The tops of the two connecting rods 19 are fixedly connected with an upper support rod 20. On both sides of the upper part of the outer side wall of the lower support rod 11 and on both sides of the lower part of the outer side wall of the upper support rod 20, positioning shafts 21 are correspondingly fixedly connected. The outer side walls of the four positioning shafts 21 are rotatably connected with positioning wheels 22. By rotating the four positioning wheels 22 outside the positioning shafts 21, the positioning wheels 22 are limited. By making the four positioning wheels 22 fit against the outer wall of the tree trunk at the same time, the positioning of the measuring device is facilitated.

[0027] In this embodiment, specifically: in the middle of the outer side wall of the upper support rod 20, a controller 24 is fixedly connected through a snap ring 23. Inside the controller 24, a data acquisition module 25, a data processing module 26 and a data storage module 39 are provided. The output end of the angle sensor 10 is electrically connected to the input end of the data acquisition module 25. The output end of the data acquisition module 25 is electrically connected to the input end of the data processing module 26. The output end of the data processing module 26 is electrically connected to the input end of the data storage module 39. By using the two angle sensors 10 to detect the swing angle data of the first swing arm 17 and the second swing arm 18 and transmit them to the data acquisition module 25, the data acquisition module 25 transmits the collected angle data to the data processing module 26 for calculation and processing to obtain the tree diameter at breast height data.

[0028] In this embodiment, specifically: at one end of the outer side walls of the four positioning shafts 21 close to each other, limit rings 27 are fixedly connected. At the center of one end of the four positioning wheels 22 close to each other, limit grooves 28 are provided. The outer side walls of the limit rings 27 are rotatably connected to the inner side walls of the limit grooves 28. By rotating the limit rings 27 on the positioning shafts 21 inside the limit grooves 28 on the positioning wheels 22, the positioning wheels 22 are limited.

[0029] In this embodiment, specifically: the front surfaces of the first swing arm 17 and the second swing arm 18 are both provided with a first sliding groove 29. The inner side walls of the two first sliding grooves 29 are both slidably connected with a first sliding block 30. The front surface of the first sliding block 30 is fixedly connected with a sliding cylinder 31. The front part of the inner side wall of the first sliding groove 29 is fixedly connected with a first limiting ring 32. The outer side wall of the sliding cylinder 31 is slidably connected to the inner side wall of the first limiting ring 32. The outer side of the front surface of the first sliding block 30 is attached to the rear surface of the first limiting ring 32. The inner side wall of the sliding cylinder 31 is slidably connected with a second sliding block 33. The front surface of the second sliding block 33 is fixedly connected with a sliding rod 34. The front part of the inner side wall of the sliding cylinder 31 is fixedly connected with a second limiting ring 35. The outer side wall of the sliding rod 34 is slidably connected to the inner side wall of the second limiting ring 35. The outer side of the front surface of the second sliding block 33 is attached to the rear surface of the second limiting ring 35. By limiting the first sliding block 30 with the first limiting ring 32, the sliding cylinder 31 is prevented from sliding out and falling off from the first sliding groove 29. By limiting the second sliding block 33 with the second limiting ring 35, the sliding rod 34 is prevented from sliding out and falling off from the sliding cylinder 31.

[0030] In this embodiment, specifically: the rear surface of the controller 24 is provided with a touch screen 36, which is convenient for real-time display of the measured tree diameter at breast height data through the touch screen 36.

[0031] In this embodiment, specifically: U-shaped grips 37 are fixedly connected to both sides of the rear surfaces of the lower support rod 11 and the upper support rod 20. Through the U-shaped grips 37, it is convenient for the measurement personnel to hold the device by hand for tree diameter at breast height measurement work.

[0032] In this embodiment, specifically: anti-slip sleeves 38 are fixedly connected to the middle parts of the outer side walls of the U-shaped grips 37. Through the anti-slip property of the anti-slip sleeves 38 on the U-shaped grips 37, it is prevented that the measurement personnel slip when holding the U-shaped grips 37 by hand.

[0033] As Figure 7 shown, the principle diagram of tree diameter at breast height measurement is provided, which is the measurement principle of a fast tree diameter at breast height measurement device. C1 and C2 are the rotation centers of the positioning wheels 22 on both sides respectively. The diameters of the positioning wheels 22 on both sides are both d = 120 mm, and the center distance between the positioning wheels 22 on both sides is S = 180 mm; C3 is the rotation center of the first swing arm 17 and the second swing arm 18. C3 can move back and forth, but its position is always perpendicular to the straight line formed by C1C2, and the distance from C3 to the straight line C1C2 is H (the size is adjustable). There are three distance gears for H, which are 0, 30 mm, and 60 mm respectively. The swing angles of the first swing arm 17 and the second swing arm 18 are measured by two angle sensors 10. The angles measured by the two angle sensors 10 are α and β respectively. The swing angle of the first swing arm 17 relative to the symmetry line C3C4 is θ, and the swing angle of the second swing arm 18 relative to the symmetry line C3C4 is θ'. And there are θ = 90° - α; θ' = 90° - β;

[0034] The width of the measuring rod is W = 8 mm; the center of the tree to be measured is C4, and its diameter at breast height to be measured is D = 2R; in the right triangle C3AC4, there is:

[0035]

[0036] In the right triangle C1C4B:

[0037]

[0038] From this, we get:

[0039]

[0040] Therefore:

[0041]

[0042] By substituting parameters such as the data of the device itself and the angle data of the swing of the first swing arm 17 and the second swing arm 18 detected by the two angle sensors 10 into the formula (4), the diameter at breast height of the tree to be measured can be solved.

[0043] Working principle or structural principle. When in use, according to the size of the tree to be measured, insert the rotating shaft 14 into the appropriate gear hole 13, then rotate the first swing arm 17 and the second swing arm 18 to open a certain angle, hold the two U-shaped grips 37 with both hands to lift the entire measuring device and move it. Clamp the first swing arm 17 and the second swing arm 18 on the outer wall of the tree to be measured, and push forward to make the four positioning wheels 22 approach the tree to be measured. When moving until the four positioning wheels 22 are simultaneously in contact with the outer wall of the tree to be measured, and at the same time the first swing arm 17 and the second swing arm 18 are also in contact with the outer wall of the tree to be measured, the angle sensors 10 measure the angle data of the rotation of the first swing arm 17 and the second swing arm 18 from contact to separation, and transmit it to the data acquisition module 25. The data acquisition module 25 transmits the collected angle data to the data processing module 26 for calculation and processing to obtain the tree diameter at breast height data, automatically stores it in the data storage module 39, and displays the measured tree diameter at breast height data in real time through the touch screen 36.

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

Claims

1. A tree diameter at breast height rapid measurement device, characterized in that: include: A measuring assembly (1), the measuring assembly (1) comprising an angle sensor (10), a lower support rod (11), a shift rod (12), three shift holes (13), a rotating shaft (14), a first rotating cylinder (15), a second rotating cylinder (16), a first rotating arm (17) and a second rotating arm (18), wherein the shift rod (12) is fixedly connected to the middle of the outer wall of the lower support rod (11), the upper surface of the shift rod (12) is provided with three shift holes (13), the inner wall of the shift hole (13) is slidably connected to the rotating shaft (14), and the upper part of the outer wall of the rotating shaft (14) is fixedly connected to two angle sensors (10), the input ends of the two angle sensors (10) are respectively fixedly connected to a first rotating cylinder (15) and a second rotating cylinder (16), the bottom of the first rotating cylinder (15) is rotatably connected to the top of the second rotating cylinder (16), one side of the outer wall of the first rotating cylinder (15) is fixedly connected to a first rotating arm (17), the lower part of the rear surface of the first rotating arm (17) is slidably connected to the outer wall of the second rotating cylinder (16), one side of the outer wall of the second rotating cylinder (16) is fixedly connected to a second rotating arm (18), the upper part of the rear surface of the second rotating arm (18) is slidably connected to the outer wall of the first rotating cylinder (15).

2. A tree diameter at breast height rapid measurement device according to claim 1, characterized in that: Both ends of the upper part of the outer wall of the lower support rod (11) are fixedly connected with connecting rods (19), the tops of the two connecting rods (19) are fixedly connected with upper support rods (20), and the two sides of the upper part of the outer wall of the lower support rod (11) and the two sides of the lower part of the outer wall of the upper support rod (20) are correspondingly fixedly connected with positioning shafts (21), and the outer walls of the four positioning shafts (21) are rotatably connected with positioning wheels (22).

3. A tree diameter at breast height rapid measurement device according to claim 2, characterized in that: A controller (24) is fixedly connected to the middle portion of the outer wall of the upper support rod (20) via a clamping ring (23); a data acquisition module (25), a data processing module (26) and a data storage module (39) are arranged inside the controller (24); the output end of the angle sensor (10) is electrically connected to the input end of the data acquisition module (25); the output end of the data acquisition module (25) is electrically connected to the input end of the data processing module (26); and the output end of the data processing module (26) is electrically connected to the input end of the data storage module (39).

4. A tree diameter at breast height rapid measurement device according to claim 2, characterized in that: The adjacent ends of the outer walls of the four positioning shafts (21) are fixedly connected to a limiting ring (27), and the centers of the adjacent ends of the four positioning wheels (22) are provided with a limiting groove (28), and the outer wall of the limiting ring (27) is rotatably connected to the inner wall of the limiting groove (28).

5. The tree diameter at breast height rapid measurement device according to claim 1, characterized in that: The front surfaces of the first rotating arm (17) and the second rotating arm (18) are both provided with a first sliding groove (29), the inner side walls of the two first sliding grooves (29) are both slidably connected with a first sliding block (30), the front surface of the first sliding block (30) is fixedly connected with a sliding cylinder (31), the front part of the inner side wall of the first sliding groove (29) is fixedly connected with a first limiting ring (32), the outer side wall of the sliding cylinder (31) is slidably connected to the inner side wall of the first limiting ring (32 ... and the front surface of the first sliding block (30) is fixedly connected with a first limiting ring (32). The outer side of the surface is fitted and connected to the rear surface of the first limiting ring (32); the inner wall of the slide cylinder (31) is slidably connected to the second slider (33); the front surface of the second slider (33) is fixedly connected to the slide rod (34); the front part of the inner wall of the slide cylinder (31) is fixedly connected to the second limiting ring (35); the outer side wall of the slide rod (34) is slidably connected to the inner wall of the second limiting ring (35); the outer side of the front surface of the second slider (33) is fitted and connected to the rear surface of the second limiting ring (35).

6. The tree diameter at breast height rapid measurement device according to claim 3, characterized in that: A touch screen (36) is provided on the rear surface of the controller (24).

7. The tree diameter at breast height rapid measurement device according to claim 2, characterized in that: Both sides of the rear surfaces of the lower support rod (11) and the upper support rod (20) are fixedly connected with U-shaped handles (37).

8. The tree diameter at breast height rapid measurement device according to claim 7, characterized in that: The middle part of the outer side wall of the U-shaped handle (37) is fixedly connected with an anti-slip sleeve (38).

Images