Tree growth laser measuring device for forest region

Abstract

The invention discloses a tree growth laser measurement device for a forest region, and relates to the technical field of tree measurement. Comprising an external support, a rail groove is formed in the external support, the external support is arc-shaped when overlooked, a driving motor is fixedly mounted at the upper end of the external support, a first oil cylinder and a second oil cylinder are fixedly mounted on a rotating rod, and an extrusion rod is slidably mounted at the front end of the first oil cylinder through a spring; a laser sensor is fixedly installed at the upper end of the extrusion rod, a movable rod is slidably installed at the front end of the second oil cylinder through a spring, and a supporting piece is rotatably installed at the front end of the movable rod. According to the device, the extrusion rod is arranged to be attached to the surface of the tree, the position is adjusted according to the concavo-convex property of the surface of the tree, therefore, the laser reflection distance and time are changed, the change of the diameter of the tree is measured, and moss and mushroom plants on the measuring path can be cleaned on the basis that the device is supported through the movable rods arranged on the two sides.

Description

Technical Field

[0001] The present invention relates to the technical field of tree measurement, and particularly to a laser measurement device for tree growth in forest areas. Background Art

[0002] Forestry refers to the production department that protects the ecological environment, maintains ecological balance, cultivates and protects forests to obtain timber and other forest products, and utilizes the natural characteristics of forest trees to play a protective role. It is an important part of the national economy. In forest resource surveys, diameter is an important forest stand measurement data, and it is one of the most basic factors reflecting the quality and growth of living trees. The diameter of a tree will undergo natural shrinkage and expansion when the water content in the tree trunk changes. In addition, when the tree trunk fixes carbon dioxide and causes tree growth, the diameter will also change. Long-term online monitoring of the tree diameter helps to understand the short-term diameter changes of trees, the long-term growth and the laws of growth rate changes, which is of great significance for forest cultivation, forest volume surveys, etc.

[0003] Forestry measurement provides maps or data for forest surveys, management status, and evaluation. However, when measuring trees, this traditional tree diameter measurement is mainly achieved by using a diameter tape and a tree diameter caliper. Both of these tools rely on manual reading, resulting in human errors, being time-consuming and laborious, with low efficiency. They cannot accurately measure the growth paths of different diameters on the tree surface, and at the same time, the tree surface cannot be cleaned during the measurement process. Therefore, moss, fungi, and some parasitic organisms growing on the tree surface will affect the measurement accuracy, thus affecting the subsequent data statistics results.

[0004] In view of the above problems, there is an urgent need for innovative design on the original basis. Summary of the Invention

[0005] The purpose of the present invention is to provide a laser measurement device for tree growth in forest areas to solve the problems raised in the above background art. The technical solution of the present invention provides a solution significantly different from the prior art for the technical problem of the overly single solution of the prior art.

[0006] To achieve the above object, the present invention provides the following technical solution: A laser measurement device for tree growth in a forest area, including an external bracket. An orbital groove is provided inside the external bracket. The external bracket is arc-shaped when viewed from above. A driving motor is fixedly installed at the upper end of the external bracket. A rotating rod is installed in the external bracket in a limited sliding manner. First hydraulic cylinders and second hydraulic cylinders are installed in the grooves on the left and right sides of the rotating rod. A pressing rod is slidably connected to the inner cavity of the first hydraulic cylinder through a spring. A laser sensor is fixedly installed at the upper end of the pressing rod. A movable rod is slidably installed in the inner cavity of the second hydraulic cylinder through a spring. Rotating rods that can rotate are symmetrically installed at the opposite ends of the two movable rods;

[0007] A variable-distance measurement component, which is arranged between the rotating rod and the first hydraulic cylinder. The variable-distance measurement component measures and records the uneven intervals on the tree surface;

[0008] A cleaning component, which is arranged on the pressing rod and the movable rod. The cleaning component cleans the path during measurement rotation in advance.

[0009] Preferably, the variable-distance measurement component further includes a reflecting arc surface, which is fixedly installed on the inner wall of the rotating rod. The reflecting arc surface and the laser sensor are on the same horizontal line. The rotating rod is arc-shaped when viewed from above, and the arc length of the rotating rod is greater than the arc length of the external bracket.

[0010] Preferably, the rotating rod is arranged in the orbital groove. Tooth blocks one are arranged at equal angles on the rear arc surface of the rotating rod. The output end of the driving motor is connected to a rotating gear through a rod. The rotating gear meshes with the tooth blocks one. The driving motor is located on the vertical center line of the external bracket.

[0011] Preferably, the first hydraulic cylinders are symmetrically installed on the left and right of the rotating rod. A sliding wheel is rotatably installed at the front end of the pressing rod. The front end of the pressing rod is arc-shaped when viewed from above.

[0012] Preferably, the cleaning component includes a support member and a rotating gear. The support member is "Y"-shaped when viewed from the side. The support member is fixedly installed on the outside of the rotating rod. The rotating gear is fixedly installed on the outside of the rotating rod.

[0013] Preferably, the rotating gears are symmetrically installed above and below the rotating rod. Tooth blocks two are arranged at equal distances on the pressing rod in a vertically symmetric manner. The rotating gears mesh with the tooth blocks two.

[0014] Preferably, the support member is trapezoidal when viewed from above. An arc-shaped groove is provided inside the support member, and conical scraping blades are arranged at equal angles on the inner wall of the arc-shaped groove.

[0015] Preferably, liquid outlets are symmetrically installed on the front and rear sides of the first hydraulic cylinder. The front end of the liquid outlet is installed through and into the second hydraulic cylinder, and the second hydraulic cylinder is arranged symmetrically about the first hydraulic cylinder on the left and right.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. In the present invention, by setting the radius of the external support to be greater than the radius of the forest trees, it is convenient for the staff to hold the measuring device and clip it onto the tree surface for measurement. At the same time, a pressing rod with an arc-shaped surface is arranged at the center of the external support to abut against both ends of the tree. When the movable pressing rod moves during measurement, due to the unevenness of the tree surface, it will push the pressing rod to move back and forth continuously on the hydraulic cylinder. When the pressing rod moves, it will synchronously drive the laser sensor to move, thereby changing the distance that the light emitted by the laser sensor rebounds through the reflection arc surface. By counting the rebound data, the radius of the tree surface can be accurately calculated, which is convenient for subsequent data statistics.

[0018] 2. In the present invention, movable rods are arranged on both sides of the pressing rod. When the pressing rod fits against the tree surface and moves towards the inside of the first hydraulic cylinder, the oil liquid that the pressing rod passes through will push the two groups of symmetrically arranged movable rods on the left and right to move forward. Then, through the abutment of the movable rods against the tree, support is provided for the detection device, improving the stability during detection. At the same time, as the movable rods move forward, the rotating rods rotatably installed at the front ends of the movable rods will be offset through the meshing between the rotating gears and the second toothed blocks to clamp the tree surface. At the same time, the arc-shaped setting of the support effectively prevents the conical scraper from scraping the tree bark on the tree surface. It will only clean the raised obstacles on the tree surface during the movement of the device, providing two more accurate measurement environments for the detection device. Description of the Drawings

[0019] Figure 1 It is a three-dimensional structure diagram of the present invention;

[0020] Figure 2 It is a rotating three-dimensional structure diagram of the present invention;

[0021] Figure 3 It is a three-dimensional structure diagram of the rotating rod of the present invention;

[0022] Figure 4 It is a front-end structure diagram of the pressing rod of the present invention;

[0023] Figure 5 It is an internal structure diagram of the first hydraulic cylinder and the second hydraulic cylinder of the present invention;

[0024] Figure 6 It is a structure diagram of the support of the present invention.

[0025] In the figure: 1. External support; 2. Track groove; 3. Driving motor; 4. Rotating rod; 41. First tooth block; 5. First hydraulic cylinder; 501. Extrusion rod; 502. Second tooth block; 503. Sliding wheel; 6. Second hydraulic cylinder; 601. Movable rod; 602. Support member; 603. Rotating rod; 7. Laser sensor; 8. Reflective arc surface; 9. Rotating gear; 10. Rotating gear; 11. Conical scraper; 12. Liquid outlet. Detailed implementation mode

[0026] 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 work shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-6 , the present invention provides a technical solution: a laser measurement device for tree growth in forest areas, including an external support 1. A track groove 2 is opened inside the external support 1. The external support 1 is arc-shaped when viewed from above. A driving motor 3 is fixedly installed at the upper end of the external support 1. A rotating rod 4 is installed in the external support 1 in a limited sliding manner. First hydraulic cylinders 5 and second hydraulic cylinders 6 are installed in the grooves on the left and right sides of the rotating rod 4. An extrusion rod 501 is slidably connected to the inner cavity of the first hydraulic cylinder 5 through a spring. A laser sensor 7 is fixedly installed at the upper end of the extrusion rod 501. An activity rod 601 is slidably installed in the inner cavity of the second hydraulic cylinder 6 through a spring. Rotatable rotating rods 603 are symmetrically installed at the opposite ends of the two activity rods 601;

[0028] The variable-distance measurement component is arranged between the rotating rod 4 and the first hydraulic cylinder 5, and the uneven intervals on the tree surface are measured and recorded through the variable-distance measurement component;

[0029] The cleaning component is arranged on the extrusion rod 501 and the activity rod 601, and the cleaning component cleans the path during measurement rotation in advance.

[0030] As an implementation mode of the present invention, the variable-distance measurement component further includes a reflective arc surface 8. The reflective arc surface 8 is fixedly installed on the inner wall of the rotating rod 4. The reflective arc surface 8 and the laser sensor 7 are on the same horizontal line. The rotating rod 4 is arc-shaped when viewed from above, and the arc length of the rotating rod 4 is greater than the arc length of the external support 1.

[0031] As an implementation mode of the present invention, the rotating rod 4 is arranged in the track groove 2. First tooth blocks 41 are arranged at equal angles on the rear arc surface of the rotating rod 4. The output end of the driving motor 3 is connected with a rotating gear 9 through a rod. The rotating gear 9 meshes with the first tooth blocks 41. The driving motor 3 is located on the vertical center line of the external support 1.

[0032] As an implementation manner of the present invention, the first hydraulic cylinder 5 is symmetrically installed on the rotating rod 4 on the left and right. A sliding wheel 503 is rotatably installed at the front end of the extrusion rod 501, and the front end of the extrusion rod 501 is arc-shaped when viewed from above.

[0033] The driving motor 3 reciprocally drives the rotating gear 9 to rotate through the rod connected to the output end. At the same time, the rotating gear 9 meshes with the first tooth block 41 to make the rotating rod 4 periodically deflect left and right with the outer bracket 1 as the center, and complete the measurement of the surface diameter of the tree by deflecting 180 degrees to the left and right respectively. During the deflection of the rotating rod 4, the extrusion rod 501 in contact with the tree surface moves along the tree surface through the sliding wheel 503 provided at the front end, and is always attached to the tree surface by the elastic force of the spring. During the measurement, as the tree surface is uneven, it moves back and forth on the first hydraulic cylinder 5, thereby changing the distance from the laser sensor 7 to the reflection arc surface 8, so that the diameter of different positions of the tree can be calculated by the different reflection times of the laser in the subsequent process.

[0034] As an implementation manner of the present invention, the cleaning assembly includes a support member 602 and a rotating gear 10. The support member 602 is fixedly installed on the outside of the rotating rod 603. The side view of the support member 602 is in the shape of a "Y", and the rotating gear 10 is fixedly installed on the outside of the rotating rod 603.

[0035] As an implementation manner of the present invention, the rotating gears 10 are symmetrically installed above and below the rotating rod 603. The second tooth blocks 502 that are symmetrically arranged up and down are equidistantly arranged on the extrusion rod 501, and the rotating gear 10 meshes with the second tooth blocks 502.

[0036] As an implementation manner of the present invention, the support member 602 is trapezoidal when viewed from above. An arc-shaped groove is opened inside the support member 602, and conical scrapers 11 are equiangularly arranged on the inner wall of the arc-shaped groove.

[0037] As an implementation manner of the present invention, liquid outlets 12 are symmetrically installed on the front and rear sides of the first hydraulic cylinder 5. The front ends of the liquid outlets 12 are installed through and into the second hydraulic cylinder 6, and the second hydraulic cylinder 6 is symmetrically arranged about the first hydraulic cylinder 5 on the left and right.

[0038] During measurement, as the extrusion rod 501 abuts against the tree, the rearward-moving extrusion rod 501 in the first hydraulic cylinder 5 squeezes the hydraulic fluid into the second hydraulic cylinder 6. As the hydraulic fluid enters, it pushes the movable rod 601 forward until it abuts against the tree, improving the overall stability of the device during rotation detection. And as the movable rod 601 moves forward, the rotating rod 603 drives the support member 602 to deflect through the rotating gear 10, so that its arc surface clamps on the surface of the tree, further improving the stability of the device. And as the rotating rod 4 deflects, the conical scraper 11 arranged at equal angles inside scrapes the surface of the tree to improve the measurement accuracy.

[0039] Working principle: When using this tree growth laser measurement device, first clamp the device at the position to be measured on the tree. As the external bracket 1 is clamped to the tree, the arc surface of the extrusion rod 501 is squeezed by the tree and moves towards the inside of the first hydraulic cylinder 5. And as the extrusion rod 501 moves, the hydraulic fluid inside the first hydraulic cylinder 5 is pressurized and transmitted through the liquid outlet 12 towards the inside of the second hydraulic cylinder 6, thereby pushing the movable rod 601 towards the outside of the second hydraulic cylinder 6 until it abuts against the surface of the tree. After the clamping is completed, start the drive motor 3 to drive the rotating gear 9 to rotate reciprocally, and engage with the first tooth block 41 arranged at equal angles on the rear side of the rotating rod 4, so that the rotating rod 4 makes a 180-degree reciprocating motion in the track groove 2 of the external bracket 1. At the same time, during the movement of the rotating rod 4, the extrusion rod 501 moves along the surface of the tree through the sliding wheel 503 and offsets the front and rear distances according to different concave and convex positions in contact with the tree, thereby changing the distance between the laser sensor 7 and the reflection arc surface 8. When the rotating rod 4 completes the measurement of the tree diameter, statistically calculate the changed data of the position of the laser sensor 7, and the diameter of the tree can be obtained. The operation is simple and convenient, which is convenient for the staff to use.

[0040] During the process of the extrusion rod 501 squeezing the tree, as the hydraulic fluid is transmitted, the hydraulic fluid inside the second hydraulic cylinder 6 increases, pushing the movable rod 601 towards the central position until it abuts against the tree, increasing the overall stability of the device. At the same time, during the forward movement of the movable rod 601, the rotating rod 603 at the front end of the movable rod 601 engages with the second tooth block 502 on the movable rod 601 through the rotating gears 10 fixedly installed symmetrically up and down, so that the rotating rod 603 drives the support member 602 to deflect and clamp the tree. At the same time, during the deflection of the rotating rod 4, the support member 602 abuts against the surface of the tree on both the upper and lower sides through the arc surface setting, preventing the conical scraper 11 from scraping the tree bark. When encountering raised moss or fungi, the conical scraper 11 will cut and scrape the raised objects to prevent them from affecting the measurement accuracy and improve the overall measurement accuracy of the device.

[0041] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A laser measurement device for tree growth in forest areas, comprising an external bracket (1), characterized in that: An internal track groove (2) is provided in the external support (1). The external support (1) is arc-shaped when viewed from above. A driving motor (3) is fixedly installed at the upper end of the external support (1). A rotating rod (4) is installed in the external support (1) in a limited sliding manner. First hydraulic cylinders (5) and second hydraulic cylinders (6) are installed in the grooves on the left and right sides of the rotating rod (4). A pressing rod (501) is slidably connected to the inner cavity of the first hydraulic cylinder (5) through a spring. A laser sensor (7) is fixedly installed at the upper end of the pressing rod (501). An actuating rod (601) is slidably installed in the inner cavity of the second hydraulic cylinder (6) through a spring. Rotating rods (603) that can rotate are symmetrically installed opposite to each other on the two actuating rods (601); A variable-distance measuring assembly is provided between the rotating rod (4) and the first hydraulic cylinder (5). The uneven intervals on the tree surface are measured and recorded through the variable-distance measuring assembly; A cleaning assembly is provided on the pressing rod (501) and the actuating rod (601). The cleaning assembly clears the path during the measurement rotation in advance during the measurement process.

2. The tree growth laser measurement device for forest areas according to claim 1, wherein: The variable-distance measuring assembly further includes a reflecting arc surface (8). The reflecting arc surface (8) is fixedly installed on the inner wall of the rotating rod (4). The reflecting arc surface (8) and the laser sensor (7) are on the same horizontal line. The rotating rod (4) is arc-shaped when viewed from above, and the arc length of the rotating rod (4) is greater than the arc length of the external support (1).

3. The laser measuring device for tree growth in forest areas according to claim 2, characterized in that: The rotating rod (4) is arranged in the track groove (2). Tooth blocks one (41) are equiangularly arranged on the rear arc surface of the rotating rod (4). The output end of the driving motor (3) is connected to a rotating gear (9) through a rod. The rotating gear (9) meshes with the tooth blocks one (41). The driving motor (3) is located on the vertical center line of the external support (1).

4. The tree growth laser measurement device for forest areas according to claim 3, characterized in that: The first hydraulic cylinders (5) are symmetrically installed on the left and right of the rotating rod (4). A sliding wheel (503) is rotatably installed at the front end of the pressing rod (501). The front end of the pressing rod (501) is arc-shaped when viewed from above.

5. The laser measurement device for tree growth in forest areas according to claim 4, wherein: The cleaning assembly includes a support member (602) and a rotating gear (10). The support member (602) is "Y"-shaped when viewed from the side. The support member (602) is fixedly installed on the outside of the rotating rod (603). The rotating gear (10) is fixedly installed on the outside of the rotating rod (603).

6. The tree growth laser measurement device for forest areas according to claim 5, characterized in that: The rotating gears (10) are symmetrically installed above and below the rotating rod (603). Tooth blocks two (502) that are symmetrically arranged above and below are equidistantly arranged on the pressing rod (501). The rotating gears (10) mesh with the tooth blocks two (502).

7. The tree growth laser measurement device for forest areas according to claim 6, characterized in that: The support member (602) is trapezoidal when viewed from above. An arc-shaped groove is provided inside the support member (602), and conical scrapers (11) are equiangularly arranged on the inner wall of the arc-shaped groove.

8. The tree growth laser measurement device for forest areas according to claim 7, characterized in that: Liquid outlets (12) are symmetrically installed on the front and rear sides of the first hydraulic cylinder (5). The front end of the liquid outlet (12) penetrates and is installed into the second hydraulic cylinder (6). The second hydraulic cylinder (6) is symmetrically arranged about the first hydraulic cylinder (5).

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