Measuring device for forest stand canopy density

Abstract

The invention relates to the technical field of forest stand canopy density measurement, and provides a forest stand canopy density measurement device, which comprises a main body assembly, wherein the main body assembly comprises an aluminum alloy frame, an acrylic plate and an equidistant grid; the acrylic plate is inserted into the aluminum alloy frame, and the equidistant grids are drawn on one surface of the acrylic plate; the using assembly comprises a guide groove, a toothed plate, a rotating gear, a mounting frame, a toothed block and a movable groove; the guide grooves are formed in the two ends of the bottom of the aluminum alloy frame. By arranging the using assembly and through auxiliary cooperation between a guide groove and a toothed plate, when the toothed plate slides into a movable groove through the guide groove, a mounting frame can be drawn out from the interior of the movable groove, meanwhile, a pedal is treaded downwards, and an inserting rod can be inserted into soil, so that an aluminum alloy frame is positioned and used; and a worker can be assisted to position and use the measuring device, so that the measuring device is prevented from shaking to influence measured data in the use process.

Description

Technical Field

[0001] The present invention relates to the technical field of stand canopy density measurement, and in particular to a device for measuring stand canopy density. Background Art

[0002] Stand canopy density refers to the ratio of the vertical projection area of ​​the forest crown to the forest floor area. It is an important indicator of forest structure and growth. The quadrature is a traditional tool used to delineate observation areas in forest stand surveys and ecological studies. It mainly assists in the determination of indicators such as vegetation cover and species number. It is also commonly used in stand canopy density measurement. Forest canopy density refers to the degree to which the tree crowns in a forest obscure the ground. It is the ratio of the vertical projection area of ​​the tree crown to the forest floor area and is usually expressed using the decimal method. In outdoor environments, lightweight frames can shake or shift slightly due to airflow. When placed on a steeply sloping forest surface, the lack of anti-slip and fixed structures can cause the sample frame to slide along the slope, causing its coverage area to deviate from the preset observation point. Even on flat ground, if there are debris such as dead branches, fallen leaves, and stones on the surface, the sample frame will not be able to maintain a horizontal state and may tilt locally. During the operation, in order to maintain the position of the sample plot frame, the staff often need to support the frame with their hands. The slight shaking of the hands will further aggravate the instability of the frame, which will directly affect the accuracy of the measurement data. When measuring the forest stand density, the tilt or displacement of the sample plot frame will cause the observer to deviate from the judgment of the canopy projection coverage ratio, resulting in an error between the estimated value of the local density and the actual value. When conducting a survey of herbaceous plant communities, the shaking of the frame may also lead to duplication or omission of the statistics of the number of plant individuals and coverage area in the sample plot. Summary of the Invention

[0003] The purpose of the present invention is to provide a device for measuring stand canopy density, so as to solve the defect of poor overall stability during use of an existing device for measuring stand canopy density.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a device for measuring stand canopy density, comprising: Main body assembly: The main body assembly includes an aluminum alloy frame, an acrylic plate and an isometric grid; The acrylic plate is inserted into the interior of the aluminum alloy frame, and an equidistant grid is drawn on one side of the acrylic plate; Use assembly: The use assembly includes a guide groove, a tooth plate, a rotating gear, a mounting frame, a tooth block and a movable groove; The guide grooves are opened at both ends of the bottom of the aluminum alloy frame, the tooth plates are slidably connected to the inside of the guide grooves, the movable grooves are opened at the lower parts of both sides of the aluminum alloy frame, the rotating gears are rotatably connected to the inside of the movable grooves, the mounting frame is slidably connected to the inside of the movable grooves, and the tooth blocks are fixedly connected to one end of the mounting frame.

[0005] Preferably, the use assembly further comprises a spring plate, a pedal and an insertion rod; The spring plate is slidably connected to the interior of the installation frame, the pedal is fixedly connected to the upper front end of the spring plate, and the insertion rod is fixedly connected to the bottom of the spring plate.

[0006] Preferably, the tooth block and the rotating gear are meshingly connected, and the movable groove and the guide groove penetrate each other.

[0007] Preferably, it also includes a portable component; The portable assembly includes a fixed block, a rotating plate, a movable frame, a connecting groove, a sliding block, a threaded rod and a threaded groove; The fixed block is fixedly connected to the bottom of the tooth plate, the rotating plate is rotatably connected to the two ends of the fixed block, the movable frame is rotatably connected to the rear end of the fixed block, the connecting grooves are opened at the two ends of the rear part of the aluminum alloy frame, the slider is slidably connected to the inside of the connecting groove, the threaded rod is rotatably connected to the inside of the slider, and the threaded groove is opened at one end of the tooth plate.

[0008] Preferably, one end of the threaded rod is threadedly connected to the inside of the thread groove, and the number of the rotating plates is two groups, and the two groups of rotating plates can be stored in the interior of the movable frame.

[0009] Preferably, it also includes auxiliary components; The auxiliary component includes a storage slot, a spring block, a spring buckle and a handle; The receiving grooves are provided on the upper parts of both sides of the aluminum alloy frame, the spring block is slidably connected to the inside of the receiving grooves, the spring buckle is fixedly connected to the bottom of the spring block, and the handle is fixedly connected to the front end of the spring block.

[0010] Preferably, the auxiliary component further includes a limiting hole and a fixing rod; The limiting hole is arranged on the inner bottom wall of the receiving and releasing groove, and the fixing rod is fixedly connected to the top end of the tooth plate.

[0011] Preferably, it also includes disassembly and assembly components; The disassembly and assembly components include a mounting plate, an auxiliary slot, a spring block, and an insert block; The mounting plate is placed on the top of the aluminum alloy frame, auxiliary grooves are opened at both ends of the mounting plate, spring blocks are slidably connected to the inside of the auxiliary grooves, and insert blocks are fixedly connected to the upper parts of both sides of the acrylic plate.

[0012] Preferably, the disassembly and assembly component further includes an L-shaped slot and a card slot; The card slot is arranged on the inner upper part of the aluminum alloy frame, and the L-shaped slot is arranged on the inner side of the card slot.

[0013] Preferably, the insert block is inserted into the interior of the card slot, and the spring card block is inserted into the interior of the L-shaped slot.

[0014] The present invention provides a device for measuring stand canopy density, which has the following advantages: By providing a use component, through the auxiliary cooperation between the guide groove and the tooth plate, when the tooth plate slides through the guide groove to the inside of the movable groove, the installation frame can be slid out from the inside of the movable groove, and at the same time, stepping down the pedal can make the insertion rod insert into the inside of the soil, so as to position the aluminum alloy frame for use, which can assist the staff in positioning the measurement device for use, prevent the measurement device from shaking during use and affecting the measurement data, and keep the sample box in a horizontal state during use to avoid local tilting; Furthermore, by providing a portable component, the two groups can be flipped downward in sequence through the auxiliary cooperation between the fixed block and the rotating plate, and the two groups of rotating plates can be stored in the interior of the movable frame at the same time, which can facilitate the staff to store and carry the aluminum alloy frame and quickly use the measuring device; Furthermore, through the auxiliary cooperation between the receiving and releasing groove and the spring block, when the fixing rod squeezes the spring clip engaged in the limiting hole, the limit formed between the spring block and the receiving and releasing groove can be released, so that the spring block slides outward under the influence of the elastic force, which can provide a support position for the staff when using the measuring device, thereby facilitating the staff to use the measuring device, increasing the stability of use, and thus improving the accuracy of the measured data, avoiding the sample box from tilting or shifting, which may cause the observer to deviate from the judgment of the canopy projection coverage ratio; Furthermore, through the auxiliary cooperation between the mounting plate and the auxiliary groove, the spring block inside the auxiliary groove can be slid, thereby releasing the installation formed between the spring block and the L-shaped groove, which can assist the staff to quickly disassemble and replace the acrylic plate. When the acrylic plate is damaged, the acrylic plate and the aluminum alloy frame can be disassembled and replaced, avoiding damage to the acrylic plate of the measuring device and directly affecting the normal use of the measuring device, improving work efficiency and increasing the overall service life of the measuring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an axonometric view of the present invention; Figure 2 It is another angled isometric view of the present invention; Figure 3 It is a side view of the aluminum alloy frame of the present invention; Figure 4This is a schematic diagram of a three-dimensional disassembly of the aluminum alloy frame of the present invention; Figure 5 It is another angled isometric view of the present invention; Figure 6 A three-dimensional illustration of the present invention; Figure 7 This is a schematic diagram of the internal structure of the connecting groove of the present invention; Figure 8 It is a three-dimensional schematic diagram of the installation frame of the present invention; Figure 9 It is a three-dimensional schematic diagram of the tooth plate of the present invention.

[0016] Description of reference numerals in the figures: 11. Aluminum alloy frame; 12. Acrylic plate; 13. Equidistant grid; 21. Guide groove; 22. Tooth plate; 23. Rotating gear; 24. Mounting frame; 25. Tooth block; 26. Spring plate; 27. Pedal; 28. Insert rod; 29. ​​Movable groove; 201, fixed block; 202, rotating plate; 203, movable frame; 204, connecting groove; 205, slider; 206, threaded rod; 207, threaded groove; 31. Retractable slot; 32. Spring block; 33. Spring buckle; 34. Handle; 35. Limiting hole; 36. Fixing rod; 41. Mounting plate; 42. Auxiliary slot; 43. Spring block; 44. Insert block; 45. L-shaped slot; 46. Card slot. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figures 1-9 The present invention provides a device for measuring stand canopy density, comprising: Main body assembly: The main body assembly includes an aluminum alloy frame 11, an acrylic plate 12 and an equidistant grid 13; The acrylic plate 12 is inserted into the interior of the aluminum alloy frame 11, and an equidistant grid 13 is drawn on one side of the acrylic plate 12; In the stand canopy density measurement, the staff placed the aluminum alloy frame 11 horizontally on the forest surface. The staff observed the proportion of the area covered by the vertical projection of the forest canopy above the acrylic plate 12 to the entire area of ​​the square frame by using the equidistant grid 13 to estimate the local canopy density at that point. To ensure the representativeness of the data, sample squares are usually set up at multiple different locations in the stand for measurement. The data from multiple sample points are then combined and calculated to obtain an approximate value of the canopy density of the entire stand. Use assembly: The use assembly includes a guide groove 21, a tooth plate 22, a rotating gear 23, a mounting frame 24, a tooth block 25 and a movable groove 29; The guide grooves 21 are formed at both ends of the bottom of the aluminum alloy frame 11, the tooth plates 22 are slidably connected to the inside of the guide grooves 21, the movable grooves 29 are formed at the lower part of both sides of the aluminum alloy frame 11, the rotating gears 23 are rotatably connected to the inside of the movable grooves 29, the mounting frame 24 is slidably connected to the inside of the movable grooves 29, and the tooth block 25 is fixedly connected to one end of the mounting frame 24; The use assembly also includes a spring plate 26, a pedal 27 and an insertion rod 28; The spring plate 26 is slidably connected to the interior of the mounting frame 24 , the pedal 27 is fixedly connected to the upper front end of the spring plate 26 , and the insertion rod 28 is fixedly connected to the bottom of the spring plate 26 ; The guide groove 21 is used to provide a sliding space for the tooth plate 22. The movable groove 29 and the guide groove 21 penetrate each other. The tooth plate 22 and the rotating gear 23 are meshed and connected. The rotating gear 23 and the tooth block 25 are meshed and connected. The mounting frame 24 is used to provide a sliding space for the spring plate 26. Through the auxiliary cooperation between the guide groove 21 and the tooth plate 22, when the tooth plate 22 slides through the guide groove 21 to the inside of the movable groove 29, the installation frame 24 can slide out from the inside of the movable groove 29. At the same time, stepping down the pedal 27 can make the insertion rod 28 insert into the soil, thereby positioning the aluminum alloy frame 11. Working principle: When the staff uses the measuring device; First, when the aluminum alloy frame 11 is placed in a use location, the tooth plate 22 is squeezed and slides through the guide groove 21 into the inside of the movable groove 29, so that the tooth plate 22 and the rotating gear 23 are meshed and connected, and the rotating gear 23 can be rotated and meshed with the tooth block 25; Next, the mounting frame 24, to which the tooth block 25 is fixedly connected at one end, can be slid outward from the inside of the movable groove 29. At the same time, the worker steps down on the pedal 27, which can make the spring plate 26, to which the pedal 27 is fixed at one end, slide downward inside the mounting frame 24. The insertion rod 28 fixed at the bottom end of the spring plate 26 is inserted into the soil, and the aluminum alloy frame 11 can be positioned for use. This step can assist the staff in positioning the measuring device for use, preventing the measuring device from shaking during use and affecting the measurement data, and can keep the sample box in a horizontal state during use to avoid local tilting.

[0019] See also Figure 1-4 As shown, this embodiment is based on the above embodiment and also includes a portable component; The portable assembly includes a fixed block 201, a rotating plate 202, a movable frame 203, a connecting slot 204, a slider 205, a threaded rod 206 and a threaded slot 207; The fixed block 201 is fixedly connected to the bottom of the tooth plate 22, the rotating plate 202 is rotatably connected to both ends of the fixed block 201, the movable frame 203 is rotatably connected to the rear end of the fixed block 201, the connecting grooves 204 are provided at both ends of the rear portion of the aluminum alloy frame 11, the slider 205 is slidably connected to the interior of the connecting grooves 204, the threaded rod 206 is rotatably connected to the interior of the slider 205, and the threaded groove 207 is provided at one end of the tooth plate 22; The movable frame 203 is used to provide a space for accommodating the rotating plate 202, the connecting groove 204 is used to provide a space for sliding the slider 205, and the thread groove 207 is used to provide a space for threaded connection of the threaded rod 206; Through the auxiliary cooperation between the fixed block 201 and the rotating plate 202, the two groups can be turned downward in sequence, and the two groups of rotating plates 202 can be retracted into the interior of the movable frame 203 at the same time; Working principle: When the staff uses the measuring device; First, flip the movable frame 203 at one end of the fixed block 201 outward to release the retraction of the two sets of rotating plates 202. At the same time, flip the two sets of rotating plates 202 upward to make the rotating plates 202 and the movable frame 203 fit the ground, forming a support at the bottom of the aluminum alloy frame 11. Next, by rotating the threaded rod 206 inside the slider 205 clockwise, the threaded connection between the threaded rod 206 and the threaded groove 207 can be released, thereby releasing the position restriction of the threaded rod 206 on the toothed plate 22. When the fixing block 201 contacts the ground, the aluminum alloy frame 11 can be pressed downward, causing the toothed plate 22 to slide into the guide groove 21. This step can facilitate the staff to store and carry the aluminum alloy frame 11, and can also facilitate the staff to quickly use the measuring device.

[0020] See also Figure 1-4 As shown, this embodiment is based on the above embodiment and also includes auxiliary components; The auxiliary component includes a storage slot 31, a spring block 32, a spring buckle 33 and a handle 34; The storage grooves 31 are opened on the upper parts of both sides of the aluminum alloy frame 11 , the spring block 32 is slidably connected to the inside of the storage grooves 31 , the spring buckle 33 is fixedly connected to the bottom of the spring block 32 , and the handle 34 is fixedly connected to the front end of the spring block 32 .

[0021] The auxiliary assembly further includes a limiting hole 35 and a fixing rod 36; The limiting hole 35 is formed on the inner bottom wall of the receiving groove 31, and the fixing rod 36 is fixedly connected to the top end of the tooth plate 22; The receiving and releasing groove 31 is used to provide a sliding space for the spring block 32, and the receiving and releasing groove 31 is used to open the limiting hole 35; Through the auxiliary cooperation between the receiving groove 31 and the spring block 32, when the fixing rod 36 squeezes the spring clip 33 engaged in the limiting hole 35, the limit formed between the spring block 32 and the receiving groove 31 can be released, so that the spring block 32 slides outward under the influence of the elastic force; Working principle: When the staff uses the measuring device; First, when the tooth plate 22 slides into the movable groove 29, the retractable groove 31 and the movable groove 29 penetrate each other, so that the fixing rod 36 fixed to the top of the tooth plate 22 can squeeze the spring buckle 33 engaged in the limiting hole 35; Then, the limit formed between the spring block 32 and the receiving groove 31 can be released, so that the spring block 32 slides out from the inside of the receiving groove 31 under the influence of the elastic force; This step can provide the staff with a support position when using the measuring device, thereby facilitating the staff's use of the measuring device, increasing the stability of use, and thus improving the accuracy of the measurement data, avoiding the sample box from tilting or shifting, which may cause the observer to deviate from the judgment of the canopy projection coverage ratio.

[0022] See also Figure 1-4 As shown, this embodiment is based on the above embodiment and also includes a disassembly assembly component; The disassembly and assembly components include a mounting plate 41, an auxiliary slot 42, a spring block 43, and an insert block 44; The mounting plate 41 is placed on the top of the aluminum alloy frame 11 , and auxiliary grooves 42 are opened at both ends of the mounting plate 41 . The spring block 43 is slidably connected to the inside of the auxiliary groove 42 , and the insert block 44 is fixedly connected to the upper part of both sides of the acrylic plate 12 .

[0023] The disassembly assembly also includes an L-shaped slot 45 and a card slot 46; The latching slot 46 is formed at an upper inner portion of the aluminum alloy frame 11 , and the L-shaped slot 45 is formed inside the latching slot 46 .

[0024] The mounting plate 41 is used to define an auxiliary slot 42, which is used to provide a sliding space for the spring block 43. The insert block 44 is used to define an L-shaped slot 45, which is used to provide a limiting space for the spring block 43. Through the auxiliary cooperation between the mounting plate 41 and the auxiliary groove 42, the spring block 43 inside the auxiliary groove 42 can be slid, thereby releasing the installation formed between the spring block 43 and the L-shaped groove 45; Working principle: When the staff disassembles and replaces the acrylic plate 12; First, the spring block 43 in the sliding auxiliary groove 42 can make one end of the spring block 43 slide out from the inside of the L-shaped groove 45, thereby releasing the limit formed between the mounting plate 41 and the aluminum alloy frame 11; Next, pull the acrylic plate 12 upwards to allow the plug-in blocks 44 fixed at both ends of the acrylic plate 12 to slide inside the slots 46, thereby releasing the installation formed between the acrylic plate 12 and the aluminum alloy frame 11; This step can assist the staff in quickly disassembling and replacing the acrylic plate 12. When the acrylic plate 12 is damaged, the acrylic plate 12 and the aluminum alloy frame 11 can be disassembled and replaced, thereby avoiding damage to the acrylic plate 12 of the measuring device and directly affecting the normal use of the measuring device. While improving work efficiency, it also increases the overall service life of the measuring device.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for measuring stand density, characterized in that: include; Main body component: The main body component includes an aluminum alloy frame (11), an acrylic plate (12) and an equidistant grid (13); The acrylic plate (12) is inserted into the interior of the aluminum alloy frame (11), and an equidistant grid (13) is drawn on one side of the acrylic plate (12); Use assembly: The use assembly includes a guide groove (21), a tooth plate (22), a rotating gear (23), a mounting frame (24), a tooth block (25) and a movable groove (29); The guide groove (21) is opened at both ends of the bottom of the aluminum alloy frame (11), the tooth plate (22) is slidably connected to the inside of the guide groove (21), the movable groove (29) is opened at the lower part of both sides of the aluminum alloy frame (11), the rotating gear (23) is rotatably connected to the inside of the movable groove (29), the installation frame (24) is slidably connected to the inside of the movable groove (29), and the tooth block (25) is fixedly connected to one end of the installation frame (24).

2. The device for measuring stand canopy density according to claim 1, characterized in that: The use assembly further includes a spring plate (26), a pedal (27) and an insertion rod (28); The spring plate (26) is slidably connected to the interior of the mounting frame (24), the pedal (27) is fixedly connected to the upper front end of the spring plate (26), and the insertion rod (28) is fixedly connected to the bottom of the spring plate (26).

3. The device for measuring stand canopy density according to claim 2, characterized in that: The tooth block (25) and the rotating gear (23) are meshingly connected, and the movable groove (29) and the guide groove (21) penetrate each other.

4. The device for measuring stand canopy density according to claim 1, characterized in that: Also included is a portable component; The portable component comprises a fixed block (201), a rotating plate (202), a movable frame (203), a connecting groove (204), a sliding block (205), a threaded rod (206) and a threaded groove (207); The fixed block (201) is fixedly connected to the bottom of the tooth plate (22), the rotating plate (202) is rotatably connected to the two ends of the fixed block (201), the movable frame (203) is rotatably connected to the rear end of the fixed block (201), the connecting groove (204) is opened at the two ends of the rear part of the aluminum alloy frame (11), the slider (205) is slidably connected to the inside of the connecting groove (204), the threaded rod (206) is rotatably connected to the inside of the slider (205), and the threaded groove (207) is opened at one end of the tooth plate (22).

5. The device for measuring stand canopy density according to claim 4, characterized in that: One end of the threaded rod (206) is threadedly connected to the inside of the threaded groove (207). The number of the rotating plates (202) is two groups, and the two groups of rotating plates (202) can be stored inside the movable frame (203).

6. The device for measuring stand canopy density according to claim 1, characterized in that: Also included are auxiliary components; The auxiliary component comprises a storage slot (31), a spring block (32), a spring buckle (33) and a handle (34); The receiving groove (31) is provided at the upper part of both sides of the aluminum alloy frame (11), the spring block (32) is slidably connected to the inside of the receiving groove (31), the spring buckle (33) is fixedly connected to the bottom of the spring block (32), and the handle (34) is fixedly connected to the front end of the spring block (32).

7. The device for measuring stand canopy density according to claim 6, characterized in that: The auxiliary component further includes a limiting hole (35) and a fixing rod (36); The limiting hole (35) is formed on the inner bottom wall of the receiving and releasing groove (31), and the fixing rod (36) is fixedly connected to the top end of the tooth plate (22).

8. The device for measuring stand canopy density according to claim 1, characterized in that: Also includes disassembly and assembly of components; The disassembly and assembly assembly comprises a mounting plate (41), an auxiliary slot (42), a spring block (43), and an insert block (44); The mounting plate (41) is placed on the top of the aluminum alloy frame (11), the auxiliary grooves (42) are opened at both ends of the mounting plate (41), the spring block (43) is slidably connected to the inside of the auxiliary groove (42), and the insert block (44) is fixedly connected to the upper parts of both sides of the acrylic plate (12).

9. The device for measuring stand canopy density according to claim 8, characterized in that: The disassembly and assembly assembly further includes an L-shaped groove (45) and a card slot (46); The card slot (46) is opened on the inner upper part of the aluminum alloy frame (11), and the L-shaped slot (45) is opened on the inner side of the card slot (46).

10. The device for measuring stand canopy density according to claim 9, characterized in that: The insert block (44) is inserted into the interior of the card slot (46), and the spring card block (43) is inserted into the interior of the L-shaped slot (45).

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