A forest resource investigation tree height measuring device

Abstract

The application provides a forest resource investigation tree height measuring device, and relates to the technical field of tree height measuring devices.The device comprises a measuring helmet, the front surface of the measuring helmet is fixedly connected with a front control plate, the front surface of the measuring helmet is slidably connected with a movable frame, the movable frame is located below the front control plate, the inner side wall of the movable frame is slidably connected with a support plate, the support plate is parallel to the front surface of the measuring helmet, one end of the support plate is fixedly connected with an arc-shaped sliding rod, the bottom end of the arc-shaped sliding rod is fixedly connected with a horizontal panel, and the outer side wall of the arc-shaped sliding rod is slidably connected with a sliding mechanism.The technical scheme solves the problems in related art that the laser range finder pen device is large in size, the support frame part thereof needs to be unfolded for leveling use, and the device is large in size and inconvenient to carry, and the precision of the fishing rod height measuring ruler is insufficient for measuring trees with a height of more than 10 meters.

Description

Technical Field

[0001] This invention relates to the field of tree height measurement devices, and more particularly to a tree height measurement device for forest resource surveys. Background Technology

[0002] The purpose of forest resource surveys is to promptly grasp the quantity, quality, growth, and mortality dynamics of forest resources and their relationship with the natural environment, economic conditions, and management. Forestry surveys focus on forest land, trees, and the flora and fauna and their environmental conditions within the forest area. During the forest resource survey process, a continuous sampling method based on fixed sample plots is used to obtain information on the growth and mortality of forest stands and individual trees. In addition to area measurement and general record-keeping, the stock volume, growth, and mortality of trees also need to be measured during the sample plot survey. When measuring the height of individual trees, laser rangefinders or height measuring rods are used for on-site measurement.

[0003] Currently, in the use of existing forest tree height measurement devices, laser rangefinders are relatively large, requiring their support frames to be unfolded for leveling, and are also inconvenient to carry. Fishing rod height gauges, on the other hand, are not accurate enough for measuring trees over 10 meters in height.

[0004] Therefore, it is necessary to provide a tree height measurement device for forest resource surveys to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the existing technology of forest tree height measurement devices, such as the large size of the laser rangefinder pen, the need for its support frame to be unfolded for leveling, and its large size making it inconvenient to carry, and the insufficient accuracy of the fishing rod height measuring ruler for measuring trees over 10 meters in height.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a tree height measuring device for forest resource surveys, comprising a measuring helmet, a front control plate fixedly connected to the front of the measuring helmet, a movable frame slidably connected to the front of the measuring helmet, the movable frame being located below the front control plate, a support plate slidably connected to the inner side wall of the movable frame, the support plate being parallel to the front of the measuring helmet, an arc-shaped sliding rod fixedly connected to one end of the support plate, a horizontal panel fixedly connected to the bottom end of the arc-shaped sliding rod, and a sliding mechanism slidably connected to the outer side wall of the arc-shaped sliding rod. A treetop aiming plate is slidably connected to the outer wall of the arc-shaped sliding rod via a sliding mechanism. An arc-shaped protractor is fixedly connected to one side of the treetop aiming plate. An angle mark is provided on the inner side of the arc-shaped protractor. A laser rangefinder is fixedly connected to the outer wall of the measuring helmet. A horizontal eye distance adjustment structure is provided between the side wall of the movable frame and the support plate. One end of the horizontal eye distance adjustment structure is threaded through and connected to the side wall of the movable frame. A vertical eye distance adjustment structure is provided between the top of the movable frame and the front edge control plate. The top of the vertical eye distance adjustment structure extends above the front edge control plate.

[0007] Preferably, the horizontal panel is made of hollow transparent plastic material, and a horizontal coil is provided on the outer wall of the horizontal panel.

[0008] Preferably, the sliding mechanism includes an arc-shaped sliding sleeve, a fixing block, and a slot. The arc-shaped sliding sleeve is slidably fitted onto the outer wall of the arc-shaped sliding rod. The side wall of the arc-shaped sliding rod has a support opening. The fixing block is fixedly connected to the inner side wall of the support opening. The slot is drilled through the side wall of the arc-shaped sliding sleeve. The bottom of the arc-shaped sliding sleeve is inserted into the inside of the support opening. The side wall of the arc-shaped sliding sleeve is slidably connected to the fixing block through the slot. The treetop aiming plate is fixedly fitted onto the outer wall of the arc-shaped sliding sleeve.

[0009] Preferably, the straight line containing the center of the arc-shaped sliding rod and the center of the arc-shaped protractor is parallel to the support plate.

[0010] Preferably, the interpupillary distance lateral adjustment structure includes a lateral screw and a lateral slide groove. The lateral slide groove is formed on the side wall of the movable frame. The support plate is slidably connected inside the lateral slide groove. The lateral slide groove is rotatably connected to the side wall of the support plate. The end of the lateral slide groove away from the support plate passes through the side wall of the movable frame and is threadedly connected.

[0011] Preferably, the vertical eye distance adjustment structure includes a slanted groove, a tilting screw, and an internally threaded sleeve. The tilting screw is fixedly connected to the top of the movable frame. The bottom end of the internally threaded sleeve is rotatably connected to the side wall of the front control plate. The top end of the tilting screw is threaded into the inside of the internally threaded sleeve. The top end of the tilting screw extends above the internally threaded sleeve. The slanted groove is formed on the front of the measuring helmet. The movable frame is slidably connected to the inside of the slanted groove.

[0012] Preferably, a turntable is fixedly fitted onto the outer wall of the internally threaded sleeve, and the outer wall of the turntable is provided with anti-slip texture.

[0013] Compared with related technologies, the forest resource survey tree height measurement device provided by the present invention has the following beneficial effects:

[0014] 1. In this invention, after wearing the measuring helmet, a sliding mechanism is set up to pull the treetop aiming plate to slide on the outer wall of the arc-shaped sliding rod with the surveyor's right eye as the center. After the front of the treetop aiming plate is aligned with the treetop or tree root, the surveyor's right eye can read the included angle by aligning the horizontal panel with the angle mark on the arc-shaped protractor. The beam emitted by the laser rangefinder appears as photoelectric on the tree trunk. By constructing a right triangle with the eye, treetop or tree root, and beam point, the distance data between the surveyor and the tree can be obtained by the right angle and the laser rangefinder, and the accurate tree height can be calculated. The operation is simple, and it can be carried and used by wearing it on the head, which is very convenient.

[0015] 2. In this invention, the horizontal panel is adjusted to be on the same horizontal line as the observer's eyes by means of the vertical eye distance adjustment structure. The dot of the arc-shaped slider can be adjusted to coincide with the eye position by means of the movable frame. It can be adaptively adjusted according to the wearer's eye position. It is simple to operate and easy to use. Attached Figure Description

[0016] Figure 1 This invention provides a three-dimensional schematic diagram of a tree height measuring device for forest resource surveys;

[0017] Figure 2 This invention presents a schematic diagram of the horizontal and vertical eye-distance adjustment structures in a tree height measurement device for forest resource surveys.

[0018] Figure 3 This invention provides a schematic diagram of the backflow monitoring mechanism in a tree height measurement device for forest resource surveys;

[0019] Figure 4 This invention presents a schematic diagram of the arc-shaped protractor in a tree height measuring device for forest resource surveys.

[0020] Legend: 1. Measuring helmet; 2. Front control panel; 3. Movable frame;

[0021] 4. Support plate; 41. Arc-shaped slide bar; 42. Horizontal panel; 421. Horizontal coil; 43. Support opening; 44. Treetop aiming plate; 45. Arc-shaped protractor; 46. Angle marker;

[0022] 5. Sliding mechanism; 51. Arc-shaped sliding sleeve; 52. Fixing block; 53. Slot;

[0023] 6. Lateral eye distance adjustment structure; 61. Lateral screw; 62. Lateral slide groove;

[0024] 7. Vertical adjustment structure for eye distance; 71. Inclined groove; 72. Inclined screw; 73. Internal threaded sleeve; 74. Turntable;

[0025] 8. Laser rangefinder pen. Detailed Implementation

[0026] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0027] Numerous specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways than those described herein, and therefore the invention is not limited to the specific embodiments disclosed in the following specification.

[0028] Example 1

[0029] like Figure 1 - Figure 4 As shown, where, Figure 1 This invention provides a three-dimensional schematic diagram of a tree height measuring device for forest resource surveys; Figure 2 This invention presents a schematic diagram of the horizontal and vertical eye-distance adjustment structures in a tree height measurement device for forest resource surveys. Figure 3 This invention provides a schematic diagram of the backflow monitoring mechanism in a tree height measurement device for forest resource surveys; Figure 4This invention presents a schematic diagram of the structure of an arc-shaped protractor in a forest resource survey tree height measuring device. This embodiment proposes a forest resource survey tree height measuring device, including a measuring helmet 1. A front control plate 2 is fixedly connected to the front of the measuring helmet 1. A movable frame 3 is slidably connected to the front of the measuring helmet 1, located below the front control plate 2. A support plate 4 is slidably connected to the inner wall of the movable frame 3, and the support plate 4 is parallel to the front of the measuring helmet 1. An arc-shaped sliding rod 41 is fixedly connected to one end of the support plate 4. A horizontal panel 42 is fixedly connected to the bottom end of the arc-shaped sliding rod 41. A sliding mechanism 5 is slidably connected to the outer wall of the arc-shaped sliding rod 41. A treetop aiming plate 44 is slidably connected to the wall via a sliding mechanism 5. An arc-shaped protractor 45 is fixedly connected to one side of the treetop aiming plate 44. An angle mark 46 is provided on the inner side of the arc-shaped protractor 45. A laser rangefinder 8 is fixedly connected to the outer wall of the measuring helmet 1. A horizontal eye distance adjustment structure 6 is provided between the side wall of the movable frame 3 and the support plate 4. One end of the horizontal eye distance adjustment structure 6 is threaded through and connected to the side wall of the movable frame 3. A vertical eye distance adjustment structure 7 is provided between the top of the movable frame 3 and the front edge control plate 2. The top of the vertical eye distance adjustment structure 7 extends above the front edge control plate 2.

[0030] The horizontal panel 42 is made of hollow transparent plastic, and a horizontal coil 421 is provided on the outer wall of the horizontal panel 42. The sliding mechanism 5 includes an arc-shaped sliding sleeve 51, a fixing block 52, and a slot 53. The arc-shaped sliding sleeve 51 is slidably fitted onto the outer wall of the arc-shaped sliding rod 41. A support opening 43 is provided on the side wall of the arc-shaped sliding rod 41. The fixing block 52 is fixedly connected inside the support opening 43. The slot 53 is carved through the side wall of the arc-shaped sliding sleeve 51. The bottom of the arc-shaped sliding sleeve 51 is inserted into the inner wall of the support opening 43. The side wall of the arc-shaped sliding sleeve 51 is slidably connected to the fixing block 52 through the slot 53. The treetop aiming plate 44 is fixedly sleeved on the outer wall of the arc-shaped sliding sleeve 51. The straight line containing the center of the arc-shaped sliding rod 41 and the center of the arc-shaped protractor 45 is parallel to the support plate 4, so that the center position of the arc-shaped protractor 45 and the treetop aiming plate 44 overlaps with the position of the observer's left and right eyes.

[0031] In this embodiment, after the measuring helmet 1 is worn on the surveyor's head, the wearer's eyes are level with the horizontal panel 42, and the water level inside the horizontal panel 42 is parallel to the horizontal coil 421. One side of the treetop aiming plate 44 is lifted, causing the treetop aiming plate 44 to slide along the outer wall of the arc-shaped sliding rod 41 via the arc-shaped sliding sleeve 51 in an arc-shaped trajectory along the axis of the left and right eyes. The treetop aiming plate 44 tilts until its upper surface overlaps with the treetop being measured. As the treetop aiming plate 44 rotates, it drives the arc-shaped protractor 45 to rotate synchronously with the right eye as the center. The angle mark 46 on the arc-shaped protractor 45, which is aligned with the upper surface of the horizontal panel 42, is the treetop aiming plate. The angle between the aiming plate 44 and the horizontal panel 42 is used to obtain the first angle. Similarly, the upper surface of the treetop aiming plate 44 is overlapped with the root of the tree being measured to obtain the second angle. The light emitted by the laser rangefinder 8 is aimed at the tree trunk to obtain the beam point. Two right triangles are constructed with the treetop or root, the eye, and the beam point. The distance data between the surveyor and the tree is obtained through the laser rangefinder 8. After obtaining the included angle of the two right triangles, the length of the right-angled side, and the height of the beam point on the tree, the height of the tree can be calculated. The height data is more accurate than that measured by a fishing rod height gauge. It is simple to operate, can be used by wearing it on the surveyor's head, and can be carried around, which is very convenient.

[0032] Example 2

[0033] like Figure 1 and Figure 3 As shown, based on the same concept as Embodiment 1 above, this embodiment also proposes that the lateral eye distance adjustment structure 6 includes a lateral screw 61 and a lateral slide groove 62. The lateral slide groove 62 is formed on the side wall of the movable frame 3. The support plate 4 is slidably connected to the inside of the lateral slide groove 62. The lateral slide groove 62 is rotatably connected to the side wall of the support plate 4. The end of the lateral slide groove 62 away from the support plate 4 is threaded through and connected to the side wall of the movable frame 3. The vertical eye distance adjustment structure 7 includes an inclined groove 71, an inclined screw 72, and an internally threaded sleeve 73. The inclined screw 72 is fixedly connected to the top of the movable frame 3, and the internally threaded sleeve... The bottom end of 73 is rotatably connected to the side wall of the front control plate 2. The top end of the tilting screw 72 is threaded into the inside of the internal thread sleeve 73. The top end of the tilting screw 72 extends above the internal thread sleeve 73. The inclined groove 71 is opened on the front of the measuring helmet 1. The movable frame 3 is slidably connected to the inside of the inclined groove 71. The movable frame 3 is slidably connected to the front of the movable frame 3 through the inclined groove 71. A turntable 74 is fixedly sleeved on the outer wall of the internal thread sleeve 73. The outer wall of the turntable 74 is provided with anti-slip texture. The turntable 74 is provided to facilitate the operation of the internal thread sleeve 73 rotating on the outer wall of the tilting screw 72.

[0034] In this embodiment, when it is necessary to adjust the horizontal panel 42 to be at the same height as the surveyor's eyes, the turntable 74 is rotated to drive the internal threaded sleeve 73 to rotate on the front control plate 2. Since the movable frame 3, which is fixedly connected to the bottom end of the tilting screw 72, is slidably connected inside the inclined groove 71 and cannot rotate, the threaded feed of the tilting screw 72 drives the movable frame 3 to slide inside the inclined groove 71. Since the support plate 4 is slidably connected to the inside of the transverse slide groove 62, the horizontal panel 42 is moved downward through the support plate 4 and the fixing block 52 until the horizontal panel 42 is aligned with the surveyor's eyes. With the eyes at the same height, the horizontal eye distance adjustment structure 6 rotates on the movable frame 3. Since the support plate 4 is slidably connected inside the horizontal slide groove 62, its movement is restricted. The horizontal screw 61 is rotatably connected to the support plate 4, so it slides along the horizontal slide groove 62 on the movable frame 3 under the drive of the horizontal screw 61. This allows the distance between the arc-shaped slide rod 41 and the right eye of the surveyor to be adjusted. By aligning the circle of the arc-shaped slide rod 41 with the position of the right eye of the surveyor, it can be adaptively adjusted according to the position of the surveyor's eyes. The operation is simple and convenient for the surveyor to use.

[0035] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A tree height measuring device for forest resource surveys, comprising a measuring helmet (1), characterized in that: The front of the measuring helmet (1) is fixedly connected to a front edge control plate (2). A movable frame (3) is slidably connected to the front of the measuring helmet (1). The movable frame (3) is located below the front edge control plate (2). A support plate (4) is slidably connected to the inner side wall of the movable frame (3). The support plate (4) is parallel to the front of the measuring helmet (1). An arc-shaped slide rod (41) is fixedly connected to one end of the support plate (4). A horizontal panel (42) is fixedly connected to the bottom end of the arc-shaped slide rod (41). A sliding mechanism (5) is slidably connected to the outer side wall of the arc-shaped slide rod (41). A sliding mechanism (5) is slidably connected to the outer side wall of the arc-shaped slide rod (41) through the sliding mechanism (5). A treetop aiming plate (44) is fixedly connected to one side of the treetop aiming plate (44), and an arc-shaped protractor (45) is fixedly connected to the inner side of the arc-shaped protractor (45). An angle mark (46) is provided on the inner side of the arc-shaped protractor (45). A laser rangefinder (8) is fixedly connected to the outer side wall of the measuring helmet (1). A horizontal eye distance adjustment structure (6) is provided between the side wall of the movable frame (3) and the support plate (4). One end of the horizontal eye distance adjustment structure (6) is threaded through and connected to the side wall of the movable frame (3). A vertical eye distance adjustment structure (7) is provided between the top of the movable frame (3) and the front edge control plate (2). The top of the vertical eye distance adjustment structure (7) extends to the top of the front edge control plate (2). The horizontal panel (42) is made of hollow transparent plastic material, and a horizontal coil (421) is provided on the outer side wall of the horizontal panel (42). The sliding mechanism (5) includes an arc-shaped sliding sleeve (51), a fixing block (52), and a slot (53). The arc-shaped sliding sleeve (51) is slidably sleeved on the outer wall of the arc-shaped sliding rod (41). The side wall of the arc-shaped sliding rod (41) is provided with a support opening (43). The fixing block (52) is fixedly connected to the inner side wall of the support opening (43). The slot (53) is carved through the side wall of the arc-shaped sliding sleeve (51). The bottom of the arc-shaped sliding sleeve (51) is inserted into the inside of the support opening (43). The side wall of the arc-shaped sliding sleeve (51) is slidably connected to the fixing block (52) through the slot (53). The treetop aiming plate (44) is fixedly sleeved on the outer wall of the arc-shaped sliding sleeve (51). The straight line containing the center of the arc-shaped slide bar (41) and the center of the arc-shaped protractor (45) is parallel to the support plate (4); The lateral eye distance adjustment structure (6) includes a lateral screw (61) and a lateral slide (62). The lateral slide (62) is opened on the side wall of the movable frame (3). The support plate (4) is slidably connected to the inside of the lateral slide (62). The lateral slide (62) is rotatably connected to the side wall of the support plate (4). The end of the lateral slide (62) away from the support plate (4) passes through the side wall of the movable frame (3) and is threadedly connected. The vertical eye distance adjustment structure (7) includes a slant groove (71), a tilting screw (72), and an internal threaded sleeve (73). The tilting screw (72) is fixedly connected to the top of the movable frame (3). The bottom end of the internal threaded sleeve (73) is rotatably connected to the side wall of the front control plate (2). The top end of the tilting screw (72) is threaded into the inside of the internal threaded sleeve (73). The top end of the tilting screw (72) extends to the top of the internal threaded sleeve (73). The slant groove (71) is opened on the front of the measuring helmet (1). The movable frame (3) is slidably connected to the inside of the slant groove (71). A turntable (74) is fixedly sleeved on the outer wall of the internal threaded sleeve (73), and anti-slip texture is provided on the outer wall of the turntable (74).

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