Tree diameter at breast height measuring device for forestry investigation

Abstract

The utility model discloses a tree DBH (diameter at breast height) measuring device for forestry investigation, and relates to the field of forestry investigation, the tree DBH measuring device comprises a clamping part used for clamping a tree and further comprises a supporting part, the clamping part is arranged at the upper end of the supporting part, and an adjusting assembly used for adjusting the clamping range of the clamping part is arranged at the lower end of the supporting part. And the adjusting assembly is arranged at the lower end of the supporting part, so that an operator can conveniently adjust the clamping range of the clamping part at the lower end of the supporting part, the arm of the operator does not need to be kept at a high position for a long time, and operation is facilitated.

Description

Technical Field

[0001] This application relates to the field of forestry surveys, and in particular to a tree diameter at breast height (DBH) measuring device for forestry surveys. Background Technology

[0002] During forestry surveys, it is necessary to measure the diameter at breast height (DBH) of trees. Referring to Chinese patent application number CN202420379907.2, current tree DBH measuring devices measure the tree diameter and then calculate the DBH. The method of measuring the tree diameter is generally a clamping type, which includes a fixed frame, a fixed plate fixed on the fixed frame, and a clamping plate sliding on the fixed frame. A driving device drives the clamping plate to slide, so that the clamping plate is close to the fixed plate to clamp the tree. The fixed frame is marked with a scale, so the DBH of the tree can be measured by measuring the distance between the clamping plate and the fixed plate.

[0003] Regarding the aforementioned technologies, since the driving device for sliding the clamping plate is located on a fixed frame, and according to the requirements for measuring the diameter at breast height of trees, the diameter of the trees needs to be measured at a position 1.2 to 1.3 meters above the ground. Due to the high measurement position and some special terrain, the operator's arm needs to be kept at a high height when driving the clamping plate through the driving device, making it very strenuous for the operator to use the driving device. Utility Model Content

[0004] To facilitate adjustment of the clamping plate position, this application provides a tree diameter at breast height (DBH) measuring device for forestry surveys.

[0005] This application provides a tree diameter at breast height (DBH) measuring device for forestry surveys, which adopts the following technical solution:

[0006] A tree diameter at breast height (DBH) measuring device for forestry surveys includes a clamping part for clamping trees and a support part. The clamping part is disposed at the upper end of the support part, and the lower end of the support part is provided with an adjustment component for adjusting the clamping range of the clamping part.

[0007] By adopting the above technical solution, when using the clamping part, after clamping the tree, the clamping range of the clamping part can be adjusted by the adjustment component at the lower end of the support part, so that the clamping part can clamp the tree tightly. The diameter at breast height of the tree can be measured by measuring the clamping part. By setting the support part and placing the adjustment component at the lower end of the support part, it is convenient for the operator to adjust the clamping range of the clamping part at the lower end of the support part, without the operator's arm needing to be kept in a high position for a long time, which facilitates operation.

[0008] Optionally, the clamping part includes a fixing frame, a fixing plate, and a clamping plate. The fixing frame is fixed to the upper end of the support part, the fixing plate is fixed to one end of the fixing frame, and the clamping plate is slidably connected to the other end of the fixing frame. The clamping plate slides to move closer to or away from the fixing plate. The adjusting assembly includes an air cylinder, an air injection screw, and a piston plate. The air cylinder is fixed to the lower end of the support part. The piston plate is disposed in the air cylinder and can move along the length of the air cylinder. One end of the air injection screw is inserted into the air cylinder and rotatably connected to the piston plate, and the air injection screw and the air cylinder are threadedly connected. A fixing cylinder is fixedly connected to the fixing frame, and a piston rod is slidably connected in the fixing cylinder. One end of the piston rod extends out of the fixing cylinder and is fixedly connected to the clamping plate. The fixing cylinder is connected to the air cylinder through an air pipe.

[0009] By adopting the above technical solution, when adjusting the clamping range, rotating the air injection screw will cause the piston plate to move due to the threaded connection between the air injection screw and the air cylinder. This will allow the air pressure in the air cylinder and the fixed cylinder to be adjusted, which in turn will cause the piston rod to move, thereby adjusting the distance between the clamping plate and the fixed plate. This adjustment component is pneumatically driven, which is simple and convenient.

[0010] Optionally, the air cylinder is made of a transparent material, and the outer wall of the air cylinder is provided with graduations.

[0011] By adopting the above technical solution, the piston's movement distance can be determined by the scale on the air cylinder, and then the movement distance of the clamping plate can be calculated, and the distance between the clamping plate and the fixed plate can be calculated.

[0012] Optionally, the support includes a sleeve and a movable rod. One end of the movable rod is inserted into the sleeve, and the other end of the movable rod is fixedly connected to the fixing frame. The movable rod can move along the length of the sleeve, and the sleeve is provided with a positioning element for limiting the movement of the movable rod.

[0013] By adopting the above technical solution, the height of the clamping part can be easily adjusted to meet different measurement needs.

[0014] Optionally, the positioning element includes a limiting screw, which is threaded into the sleeve to abut against the movable rod.

[0015] By adopting the above technical solution, after adjusting the clamping part to a suitable position, tightening the limit screw can position the movable rod, thereby positioning the clamping part.

[0016] In summary, this application includes the following beneficial technical effects:

[0017] 1. By setting up a support part and placing the adjustment component at the lower end of the support part, the operator can easily adjust the clamping range of the clamping part at the lower end of the support part, without having to keep the operator's arm in a high position for a long time, which facilitates operation.

[0018] 2. This application adapts to different measurement needs by adjusting the height of the clamping part. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a tree diameter-at-breast height (DBH) measuring device for forestry surveys disclosed in this application (the air cylinder is shown in cross-section).

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Support part; 2. Clamping part; 3. Adjustment component; 4. Sleeve; 5. Movable rod; 6. Limit screw; 7. Support plate; 8. Fixing frame; 9. Fixing plate; 10. Clamping plate; 11. Air cylinder; 12. Air injection screw; 13. Piston plate; 14. Air pipe; 15. Handle; 16. Fixing cylinder; 17. Piston rod. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 This application will be described in further detail.

[0023] This application discloses a tree diameter at breast height (DBH) measuring device for forestry surveys.

[0024] Reference Figure 1 A tree diameter at breast height (DBH) measuring device for forestry surveys includes a support part 1 and a clamping part 2 for clamping trees. The clamping part 2 is located at the upper end of the support part 1, and the lower end of the support part 1 is provided with an adjustment component 3 for adjusting the clamping range of the clamping part 2.

[0025] The support part 1 includes a sleeve 4 and a movable rod 5. One end of the movable rod 5 is inserted into the sleeve 4, and the other end of the movable rod 5 is fixedly connected to the fixing frame 8. The movable rod 5 can move along the length of the sleeve 4. The sleeve 4 is provided with a positioning element for limiting the movement of the movable rod 5.

[0026] The positioning component includes a limiting screw 6, which is threaded into the sleeve 4 to abut against the movable rod 5.

[0027] In another embodiment, the positioning element can also be a pin, that is, a through hole is provided on the sleeve 4 for the pin to pass through, and multiple through holes are opened on the movable rod 5 along the length of the movable rod 5. The movable rod 5 can be positioned by using the pin to pass through the through holes on both the sleeve 4 and the movable rod 5 at the same time.

[0028] In this embodiment, a support plate 7 is fixedly connected to the lower end of the sleeve 4.

[0029] The clamping part 2 includes a fixing frame 8, a fixing plate 9 and a clamping plate 10. The fixing frame 8 is long and narrow and is fixed to the upper end of the movable rod 5. The fixing plate 9 and the clamping plate 10 are arranged opposite to each other. The fixing plate 9 is fixed to one end of the fixing frame 8 and the clamping plate 10 is slidably connected to the other end of the fixing frame 8. The clamping plate 10 slides to move closer to or away from the fixing plate 9.

[0030] In this embodiment, the clamping range mentioned herein refers to the distance range between the fixing plate 9 and the clamping plate 10.

[0031] The adjusting assembly 3 includes an air cylinder 11, an air injection screw 12, and a piston plate 13. The air cylinder 11 is fixed to the lower end of the sleeve 4. The piston plate 13 is disposed in the air cylinder 11 and can move along the length of the air cylinder 11. The piston plate 13 and the air cylinder 11 are sealed together. One end of the air injection screw 12 is inserted into the air cylinder 11 and rotatedly connected to the piston plate 13. The air injection screw 12 and the air cylinder 11 are threaded together. The other end of the air injection screw 12 is fixedly connected to a handle 15. A fixed cylinder 16 is fixedly connected to the fixed frame 8. A piston rod 17 is slidably connected in the fixed cylinder 16. The piston rod 17 and the fixed cylinder 16 are sealed together. One end of the piston rod 17 extends out of the fixed cylinder 16 and is fixedly connected to the clamping plate 10. The fixed cylinder 16 is connected to the air cylinder 11 through an air pipe 14.

[0032] In this embodiment, the trachea 14 is a flexible tube.

[0033] When in use, the space between the end of the air cylinder 11 away from the air injection screw 12 and the piston plate 13 needs to be filled with gas, and at the same time, the space between the end of the fixed cylinder 16 away from the piston rod 17 and the piston rod 17 needs to be filled with gas.

[0034] In another embodiment, the gas may also be a liquid.

[0035] In this embodiment, the air cylinder 11 is made of transparent material, and the outer wall of the air cylinder 11 is marked with graduations along its own length.

[0036] The principle of the tree diameter at breast height (DBH) measuring device for forestry surveys disclosed in this application is as follows: When in use, after clamping the tree with the clamping part 2, the handle 15 is turned to drive the air injection screw 12 to rotate, which in turn drives the piston plate 13 to move. This allows the air pressure in the air cylinder 11 and the fixed cylinder 16 to be adjusted, which in turn drives the piston rod 17 to move. This allows the distance between the clamping plate 10 and the fixed plate 9 to be adjusted until the clamping part 2 clamps the tree tightly. The DBH of the tree can then be measured by the movement of the measuring piston plate 13.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tree breast height measuring device for use in forest surveys, comprising a clamping portion (2) for clamping a tree, characterized in that: Also include support part (1), the clamping part (2) is arranged on the upper end of the support part (1), the lower end of the support part (1) is provided with adjusting assembly (3) for adjusting the clamping range of clamping part (2).

2. The tree breast height measuring device for forest surveying according to claim 1, characterized in that: The clamping part (2) includes a fixed frame (8), a fixed plate (9) and a clamping plate (10), the fixed frame (8) is fixed on the upper end of the support part (1), the fixed plate (9) is fixed on one end of the fixed frame (8), the clamping plate (10) is slidingly connected on the other end of the fixed frame (8), the clamping plate (10) is slidingly connected to the fixed plate (9), the adjusting assembly (3) includes a gas cylinder (11), a gas injection screw (12) and a piston plate (13), the gas cylinder (11) is fixed on the lower end of the support part (1), the piston plate (13) is arranged in the gas cylinder (11) and can move in the length direction of the gas cylinder (11), one end of the gas injection screw (12) is inserted into the gas cylinder (11) and is rotatably connected with the piston plate (13), and the gas injection screw (12) is screwedly connected with the gas cylinder (11); the fixed frame (8) is fixedly connected with a fixed cylinder (16), the fixed cylinder (16) is slidingly connected with a piston rod (17), one end of the piston rod (17) extends out of the fixed cylinder (16) and is fixedly connected with the clamping plate (10), and the fixed cylinder (16) is communicated with the gas cylinder (11) through a gas pipe (14).

3. A tree breast height measuring device for forestry surveying according to claim 2, characterized in that: The gas cylinder (11) is made of transparent material, and a scale is arranged on the outer wall of the gas cylinder (11).

4. The tree breast height diameter measuring device for forestry surveying according to claim 2, characterized in that: The support part (1) includes a sleeve (4) and a movable rod (5), one end of the movable rod (5) is inserted into the sleeve (4), the other end of the movable rod (5) is fixedly connected with the fixed frame (8), and the movable rod (5) can move along the length direction of the sleeve (4), and the sleeve (4) is provided with a positioning member for limiting the movement of the movable rod (5).

5. A tree breast height measuring device for forestry surveying according to claim 4, characterized in that: The positioning member includes a limiting screw (6), and the limiting screw (6) is used for being screwed into the sleeve (4) to abut against the movable rod (5).

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