A banana tree height measuring device

Abstract

The invention relates to the technical field of tree measurement, and discloses a banana tree height measuring device, including a rotating angle observation mechanism and an adjustable braking mechanism, wherein an arc-shaped contact plate abutting against the outer circumference of a second rotating column, a lower movable plate capable of longitudinally moving with the arc-shaped contact plate, a spiral spring exerting downward elastic pressure on the lower movable plate, and an upper movable plate capable of controlling the elastic strength of the spiral spring are arranged inside the device. The banana tree height measuring device controls the static state between scale lines by the friction force of the components on the contact surface, and can achieve a 360-degree angle measurement capability without dead angles, thereby improving the accuracy of tree height measurement. In addition, the device can control the rotation damping strength required when adjusting the observation angle, so that the stability of the device can be adjusted according to actual conditions.

Description

Technical Field

[0001] The invention relates to the technical field of tree measurement, in particular to a banana tree height measurement device. Background Art

[0002] To measure the height of a tree, for trees over 2 meters in height, it is necessary to use a certain height measuring instrument. Commonly used height gauges include the Bruless height gauge. The Bruless height gauge measures the height of a tree based on the principle of trigonometric function by measuring the distance from the observer to the object being measured and the pitch angle of the top of the object being measured. The working principle of the height gauge is simple and suitable for popular science introduction. However, the improved height gauge of the Bruless height gauge, which is more commonly used, mainly considers portability, and the measurement method is generally handheld measurement. During use, the height gauge is controlled by hand, which will result in the height gauge being unable to always keep the angle with the treetop due to the shaking of the hand of the surveyor when measuring the tree height, thus affecting the measurement accuracy of the tree height, which is not conducive to ensuring the accuracy of the tree height measurement results. Moreover, the use of the height gauge generally requires a certain degree of explanation or operation training, which is not suitable for people without operation experience.

[0003] To this end, the Chinese patent with the publication number "CN220829156U" announced "a tree height measuring device", whose main structure includes a fixed disk, a rotating disk, an angle scale indicator and a mounting bracket; the fixed disk and the rotating disk are interlocked, and their respective rotation axes overlap and can rotate with each other; the angle scale indicator includes: a reference mark and an angle scale, wherein the reference mark is set on the first outer side wall of the fixed disk, and the angle scale is set on the second outer side wall of the rotating disk, and the scales between the reference mark and the angle scale are aligned to reflect the angle formed by the rotation between the reference mark and the angle scale; the mounting bracket is fixedly connected to the back plate of the fixed disk and the fixed object that fixes the tree height measuring device. The tree height measuring device measures the height of the tree according to the principle of trigonometric function by measuring the distance from the observer to the object to be measured and measuring the pitch angle of the top of the object to be measured.

[0004] However, in actual use, the fixed disk and the rotating disk rotate or remain stationary by utilizing grooves and corresponding protrusions. When the protrusion moves to the area between the two grooves, the angle positioning between the fixed disk and the rotating disk cannot be performed, resulting in poor measurement accuracy. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a banana tree height measuring device, which utilizes the friction force of components on the contact surface to control the static state between the scale lines, and can achieve 360-degree angle measurement capability without blind spots, thereby improving the accuracy of tree height measurement. In addition, the device can control the rotational damping strength required when adjusting the observation angle, so that the stability of the equipment can be adjusted according to actual conditions, thereby solving the above-mentioned technical problems.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a banana tree height measuring device, comprising an L-shaped mounting plate, a transverse hollow cylinder structure integrally arranged on one side of the longitudinal vertical surface of the L-shaped mounting plate, a No. 1 component mounting cavity arranged inside one end of the transverse hollow cylinder structure, a No. 2 component mounting cavity arranged at one end of the No. 1 component mounting cavity, a horizontal scale line arranged on the outer circumferential surface of the transverse hollow cylinder structure, an arc-shaped fixing plate fixedly installed on the top of the outer circumferential surface of the transverse hollow cylinder structure, and a No. 1 rod body through hole arranged in the arc-shaped fixing plate and the transverse hollow cylinder structure, and also comprising a rotating An angle observation mechanism, which is internally provided with a No. 2 rotating column rotatably installed in the No. 2 component installation cavity, a No. 1 rotating cap capable of reducing the rotation speed of the No. 2 rotating column, and an angle scale value arranged at the end of the No. 2 rotating column and obtaining a corresponding angle through the difference with the horizontal scale line; and an adjustable braking mechanism, which is internally provided with an arc-shaped contact plate abutting against the outer circumference of the No. 2 rotating column, a lower movable plate capable of longitudinally moving with the arc-shaped contact plate, a coil spring exerting downward elastic pressure on the lower movable plate, and an upper movable plate capable of controlling the elastic strength of the coil spring.

[0007] Preferably, the rotating angle observation mechanism includes a No. 1 rotating column installed inside the No. 1 component installation cavity through a bearing, the No. 1 rotating column is provided with a No. 2 rotating column which is an integral structure with it and is located inside the No. 2 component installation cavity at the end face facing the No. 2 component installation cavity, the No. 2 rotating column is provided with a No. 3 rotating column which is an integral structure with it at one end located outside the No. 2 component installation cavity, the end face of the No. 3 rotating column is provided with a horizontal observation hole, the outer circumferential surface of the No. 3 rotating column is provided with an angle scale value, the other end face of the No. 1 rotating column is provided with a tooth setting groove with an inwardly concave structure, and the No. 1 rotating column is provided with a tooth setting groove with a concave structure. A plurality of main tooth structures integrally formed therewith are arranged on the inner circumferential surface of the tooth setting groove, a transverse fixing rod is fixedly installed on the corresponding vertical surface of the L-shaped mounting plate, a fixed vertical plate is fixedly installed on one end of the transverse fixing rod, a No. 1 shaft mounting hole is arranged inside the fixed vertical plate, a No. 1 rotating shaft that can rotate is installed on the fixed vertical plate inside the No. 1 shaft mounting hole through a bearing, a No. 1 rotating cap is fixedly installed on one end of the No. 1 rotating shaft, a gear plate located inside the tooth setting groove is fixedly installed on the other end of the No. 1 rotating shaft, and the gear plate and the main tooth structure are meshed with each other.

[0008] Preferably, the axis line of the horizontal observation hole, the zero scale value of the angle scale value and the horizontal scale line are located on the same horizontal plane in an initial state.

[0009] Preferably, the pitch circle radius of the gear plate is smaller than the structural radius of the pitch circle of the main tooth structure, and the pitch circle radius of the gear plate is smaller than the structural radius of the No. 1 rotating cap.

[0010] Preferably, the adjustable braking mechanism comprises a longitudinal hollow shell, the bottom of the longitudinal hollow shell is provided with a No. 1 fixing plate which is an integral structure with the longitudinal hollow shell and fixedly mounted on the top of the arc-shaped fixing plate, the interior of the longitudinal hollow shell is provided with a longitudinal component movable cavity, the bottom end of the longitudinal hollow shell is provided with a No. 2 rod body through-hole connecting the bottom end of the longitudinal component movable cavity and the top of the No. 1 rod body through-hole, the top of the longitudinal hollow shell is provided with an internal threaded hole connecting the external space and the top of the longitudinal component movable cavity, the longitudinal hollow shell is provided with a lower movable plate which can move axially along the longitudinal component movable cavity inside the longitudinal component movable cavity, and the longitudinal hollow shell is provided with a No. 2 rod body through-hole connecting the bottom end of the longitudinal component movable cavity and the top of the No. 1 rod body through-hole. An upper movable plate moves axially along the movable cavity of the longitudinal component, and the upper movable plate is located directly above the lower movable plate, and a longitudinal telescopic rod penetrating the through-hole of the No. 2 rod body and the through-hole of the No. 1 rod body is fixedly installed at the bottom end of the lower movable plate, and an arc-shaped contact plate which is an integral structure with it and abuts against the outer circumferential surface of the No. 2 rotating column is provided at the bottom end of the longitudinal telescopic rod, a helical spring in a compressed state is arranged between the upper movable plate and the lower movable plate, a longitudinal externally threaded rod which can rotate is installed at the top end of the upper movable plate through a bearing, the rod body of the longitudinal externally threaded rod passes through the internally threaded hole, and the two are connected at the through-position by a threaded structure, and a No. 2 rotating cap which is an integral structure with it is provided at the top end of the longitudinal externally threaded rod.

[0011] Preferably, the structural shape of the perforated cross section of the No. 2 rod body is consistent with the structural shape of the cross section of the longitudinal telescopic rod, both are polygonal structures, and the structural dimensions of the perforated cross section of the No. 2 rod body match the structural dimensions of the cross section of the longitudinal telescopic rod.

[0012] Preferably, the thread structure includes an internal thread structure arranged in the internal thread hole and an external thread structure arranged at the body of the longitudinal external thread rod, and the internal thread structure matches the external thread structure.

[0013] Preferably, it also includes a connection angle adjustment mechanism, which is internally provided with a hemispherical shell fixedly mounted on the bottom surface of the L-shaped mounting plate, a rotating ball head installed inside the hemispherical shell and capable of rotating, and a damping sleeve embedded between the hemispherical shell and the rotating ball head and capable of forming a damping effect on the rotation of both.

[0014] Preferably, the connection angle adjustment mechanism includes a hemispherical shell, the top of the hemispherical shell is provided with a No. 2 fixing plate which is an integral structure with the hemispherical shell and fixedly mounted on the bottom surface of the L-shaped mounting plate, the interior of the hemispherical shell is provided with a hemispherical cavity, the hemispherical shell is provided with a rotatable rotating ball head inside the hemispherical cavity, a damping sleeve is embedded between the hemispherical shell and the rotating ball head, and the bottom end of the rotating ball head is provided with a No. 3 fixing plate which is an integral structure with the hemispherical shell and can be connected to an external support rod.

[0015] Preferably, the friction force generated by the damping sleeve on the rotating ball head is sufficient to keep the rotating ball head stationary during operation.

[0016] Compared with the prior art, the present invention provides a banana tree height measuring device, which has the following beneficial effects:

[0017] 1. By using the friction force of the components on the contact surface to control the static state between the scale lines, it is possible to achieve 360-degree angle measurement without blind spots, thereby improving the accuracy of tree height measurement. In addition, the device can control the rotation damping strength required when adjusting the observation angle, so that the stability of the equipment can be adjusted according to actual conditions.

[0018] 2. By setting up a rotating angle observation mechanism, the rotation speed of the No. 3 rotating column is reduced, and the angle scale value is changed. Finally, when the staff observes the measuring point of the banana tree through the horizontal observation hole, the rotation of the No. 1 rotating cap is stopped. At this time, by observing the angle scale value corresponding to the horizontal scale line at this time, the pitch angle θ at this time can be obtained. According to the corresponding height measurement method, the corresponding tree height value can be obtained.

[0019] 3. By setting an adjustable braking mechanism and rotating the No. 2 rotating cap, the distance between the upper movable plate and the lower movable plate is changed to change the elastic strength of the coil spring, which will eventually change the friction between the arc-shaped contact plate and the No. 2 rotating column. When the No. 3 rotating column rotates, it is necessary to overcome the above-mentioned friction force. By controlling the size of the friction force, the strength of the rotation damping can be adjusted, so that the No. 3 rotating column has the corresponding ability to resist external interference to ensure the stability of the work.

[0020] 4. By setting up a connection angle adjustment mechanism, when the road surface is uneven and the support rod is at an inclined angle, the working angle of the L-shaped mounting plate can be adjusted. Since the friction force generated by the damping sleeve on the rotating ball head is sufficient to keep the rotating ball head stationary during operation, the transverse plate of the L-shaped mounting plate can be kept in a horizontal state, thereby coping with more complex working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention;

[0022] Figure 2 It is a three-dimensional cross-sectional view of the present invention from the right side viewing angle;

[0023] Figure 3 It is a three-dimensional cross-sectional view of the present invention at the main viewing angle;

[0024] Figure 4 It is a three-dimensional diagram of the rotating angle observation mechanism of the present invention;

[0025] Figure 5 is a three-dimensional cross-sectional view of the rotating angle observation mechanism of the present invention;

[0026] Figure 6 It is a three-dimensional cross-sectional view of the adjustable brake mechanism of the present invention;

[0027] Figure 7 It is a three-dimensional cross-sectional view of the connection angle adjustment mechanism of the present invention;

[0028] Figure 8 It is a stereoscopic diagram of the damping sleeve in the present invention.

[0029] Among them: 1. L-shaped mounting plate; 2. Horizontal hollow cylinder structure; 3. No. 1 component mounting cavity; 4. No. 2 component mounting cavity; 5. Horizontal scale line; 6. Arc-shaped fixing plate; 7. No. 1 rod body through hole; 8. Rotating angle observation mechanism; 81. No. 1 rotating column; 82. No. 2 rotating column; 83. No. 3 rotating column; 84. Horizontal observation hole; 85. Angle scale value; 86. Tooth setting groove; 87. Main tooth structure; 88. Fixed vertical plate; 89. Horizontal fixing rod; 810. No. 1 shaft body mounting hole; 811. No. 1 rotating shaft; 812. Gear plate; 813. No. 1 rotating shaft Moving cap; 9, adjustable braking mechanism; 91, longitudinal hollow shell; 92, No. 1 fixed plate; 93, longitudinal component movable cavity; 94, No. 2 rod body perforation; 95, internal threaded hole; 96, lower movable plate; 97, upper movable plate; 98, spiral spring; 99, longitudinal telescopic rod; 910, arc-shaped resistance plate; 911, longitudinal external threaded rod; 912, No. 2 rotating cap; 10, connection angle adjustment mechanism; 101, hemispherical shell; 102, No. 2 fixed plate; 103, hemispherical cavity; 104, damping sleeve; 105, rotating ball head; 106, No. 3 fixed plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0031] See also Figure 1 , Figure 2 and Figure 3 A banana tree height measuring device comprises an L-shaped mounting plate 1, a transverse hollow cylinder structure 2 integrally arranged on one side of the longitudinal facade of the L-shaped mounting plate 1, a No. 1 component mounting cavity 3 arranged inside one end of the transverse hollow cylinder structure 2, a No. 2 component mounting cavity 4 arranged at one end of the No. 1 component mounting cavity 3, a horizontal scale line 5 arranged on the outer circumferential surface of the transverse hollow cylinder structure 2, an arc-shaped fixing plate 6 fixedly installed on the top of the outer circumferential surface of the transverse hollow cylinder structure 2, and a No. 1 rod body through hole 7 arranged in the arc-shaped fixing plate 6 and the transverse hollow cylinder structure 2. First, the bottom end of the No. 3 fixing plate 106 is fixedly connected to a support rod, and then the bottom end of the support rod is fixed to one side of the tree, and the height of the banana tree is measured using the same operating steps as "CN220829156U".

[0032] To achieve the deceleration angle adjustment function, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , it is necessary to set up a rotating angle observation mechanism 8, which is provided with a No. 2 rotating column 82 rotatably installed in the No. 2 component installation cavity 4, a No. 1 rotating cap 813 capable of reducing the rotation speed of the No. 2 rotating column 82, and an angle scale value 85 provided at the end of the No. 2 rotating column 82 and obtaining a corresponding angle through the difference with the horizontal scale line 5. First, the zero scale value of the angle scale value 85 is made consistent with the horizontal scale line 5, and then, the staff's eyes observe the corresponding environment through the horizontal observation hole 84, and then, the No. 1 rotating cap 813 is rotated, due to the graduation of the gear plate 812 The circle radius is smaller than the structural radius of the pitch circle of the main tooth structure 87, and the pitch circle radius of the gear plate 812 is smaller than the structural radius of the No. 1 rotating cap 813, which will reduce the rotation speed of the No. 3 rotating column 83 and cause the angle scale value 85 to change. Finally, when the staff observes the measuring point of the banana tree through the horizontal observation hole 84, the rotation of the No. 1 rotating cap 813 is stopped. At this time, by observing the angle scale value 85 corresponding to the horizontal scale line 5 at this time, the pitch angle θ at this time can be obtained, and the corresponding tree height value can be obtained according to the corresponding height measurement method.

[0033] For the specific structure of the rotating angle observation mechanism 8, please refer to Figure 4 and Figure 5, including a No. 1 rotating column 81 installed inside the No. 1 component installation cavity 3 through a bearing, the No. 1 rotating column 81 is provided with a No. 2 rotating column 82 which is an integral structure with it and is located inside the No. 2 component installation cavity 4 at the end face facing the No. 2 component installation cavity 4, the No. 2 rotating column 82 is provided with a No. 3 rotating column 83 which is an integral structure with it at one end located outside the No. 2 component installation cavity 4, the end face of the No. 3 rotating column 83 is provided with a horizontal observation hole 84, the outer circumferential surface of the No. 3 rotating column 83 is provided with an angle scale value 85, the axis line of the horizontal observation hole 84, the zero scale value of the angle scale value 85 and the horizontal scale line 5 are located on the same horizontal plane in the initial state, and the other end face of the No. 1 rotating column 81 is provided with a tooth setting groove 8 with an inner concave structure 6. The No. 1 rotating column 81 is provided with a plurality of main tooth structures 87 integrally formed therewith on the inner circumferential surface of the tooth setting groove 86, and the L-shaped mounting plate 1 is fixedly installed with a transverse fixing rod 89 on the corresponding vertical surface, and a fixed vertical plate 88 is fixedly installed on one end of the transverse fixing rod 89, and a No. 1 shaft mounting hole 810 is provided inside the fixed vertical plate 88, and a No. 1 rotating shaft 811 that can rotate is installed inside the No. 1 shaft mounting hole 810 of the fixed vertical plate 88 through a bearing, and a No. 1 rotating cap 813 is fixedly installed on one end of the No. 1 rotating shaft 811, and a gear plate 812 located inside the tooth setting groove 86 is fixedly installed on the other end of the No. 1 rotating shaft 811, and the gear plate 812 is meshed with the main tooth structure 87.

[0034] To adjust the strength of the rotational damping, see Figure 1 , Figure 2 , Figure 3 and Figure 6 , it is necessary to set up an adjustable braking mechanism 9, which is internally provided with an arc-shaped contact plate 910 that contacts the outer circumference of the No. 2 rotating column 82, a lower movable plate 96 that can move longitudinally with the arc-shaped contact plate 910, a coil spring 98 that exerts downward elastic pressure on the lower movable plate 96, and an upper movable plate 97 that can control the elastic strength of the coil spring 98. By rotating the No. 2 rotating cap 912, due to the connection relationship of the threaded structure, the upper movable plate 97 will move relative to the lower movable plate 96, thereby changing the distance between the upper movable plate 97 and the lower movable plate 96, so as to change the elastic strength of the coil spring 98, and finally change the friction between the arc-shaped contact plate 910 and the No. 2 rotating column 82. When the No. 3 rotating column 83 rotates, it is necessary to overcome the above-mentioned friction force. By controlling the magnitude of the friction force, the strength of the rotation damping can be adjusted, so that the No. 3 rotating column 83 has the corresponding ability to resist external interference to ensure the stability of the work.

[0035] For the specific structure of the adjustable brake mechanism 9, please refer to Figure 6, including a longitudinal hollow shell 91, the bottom of the longitudinal hollow shell 91 is provided with a No. 1 fixing plate 92 which is an integral structure with the longitudinal hollow shell 91 and fixedly mounted on the top of the arc-shaped fixing plate 6, the interior of the longitudinal hollow shell 91 is provided with a longitudinal component active cavity 93, the bottom end of the longitudinal hollow shell 91 is provided with a No. 2 rod body through hole 94 which connects the bottom end of the longitudinal component active cavity 93 and the top of the No. 1 rod body through hole 7, the top end of the longitudinal hollow shell 91 is provided with an internal threaded hole 95 which connects the external space and the top of the longitudinal component active cavity 93, the longitudinal The hollow shell 91 is provided with a lower movable plate 96 capable of axially moving along the longitudinal component movable cavity 93, and the longitudinal hollow shell 91 is provided with an upper movable plate 97 capable of axially moving along the longitudinal component movable cavity 93, and the upper movable plate 97 is located directly above the lower movable plate 96, and the bottom end of the lower movable plate 96 is fixedly installed with a longitudinal telescopic rod 99 penetrating the second rod body through hole 94 and the first rod body through hole 7, in order to prevent the components from self-rotation. In order to prevent the rotation phenomenon, it is necessary to make the structural shape of the cross section of the second rod body through hole 94 consistent with the structural shape of the cross section of the longitudinal telescopic rod 99, both of which are polygonal structures, and the structural size of the cross section of the second rod body through hole 94 matches the structural size of the cross section of the longitudinal telescopic rod 99. The bottom end of the longitudinal telescopic rod 99 is provided with an arc-shaped contact plate 910 which is an integral structure with it and contacts the outer circumference of the second rotating column 82. A coil spring 98 in a compressed state is placed between the upper movable plate 97 and the lower movable plate 96. A rotatable longitudinal externally threaded rod 911 is installed at the top end of the upper movable plate 97 through a bearing, the rod body of the longitudinal externally threaded rod 911 passes through the internally threaded hole 95, and the two are connected by a threaded structure at the passing portion. Specifically, the threaded structure includes an internally threaded structure arranged in the internally threaded hole 95 and an externally threaded structure arranged at the rod body of the longitudinal externally threaded rod 911, and the internally threaded structure matches the externally threaded structure, and a No. 2 rotating cap 912 with an integral structure therewith is arranged at the top end of the longitudinal externally threaded rod 911.

[0036] For more complex working environments, see Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8, which is provided with a hemispherical shell 101 fixedly mounted on the bottom surface of the L-shaped mounting plate 1, a rotating ball head 105 installed inside the hemispherical shell 101 and capable of rotating, and a damping sleeve 104 embedded between the hemispherical shell 101 and the rotating ball head 105 and capable of forming a damping effect on the rotation of both. When the road surface is uneven and the support rod is at an inclined angle, the working angle of the L-shaped mounting plate 1 can be adjusted. Since the friction force generated by the damping sleeve 104 on the rotating ball head 105 is sufficient to keep the rotating ball head 105 stationary during operation, the transverse plate body of the L-shaped mounting plate 1 can be kept in a horizontal state, thereby coping with a more complex working environment.

[0037] For the specific structure of the connection angle adjustment mechanism 10, please refer to Figure 7 and Figure 8 , including a hemispherical shell 101, the top of the hemispherical shell 101 is provided with a second fixing plate 102 which is an integral structure with the hemispherical shell 101 and fixedly mounted on the bottom surface of the L-shaped mounting plate 1, the interior of the hemispherical shell 101 is provided with a hemispherical cavity 103, the hemispherical shell 101 is provided with a rotatable rotating ball head 105 inside the hemispherical cavity 103, a damping sleeve 104 is embedded between the hemispherical shell 101 and the rotating ball head 105, and the bottom end of the rotating ball head 105 is provided with a third fixing plate 106 which is an integral structure with the hemispherical shell 101 and can be connected to an external support rod.

[0038] When in use, firstly, the bottom end of the third fixing plate 106 is fixedly connected to a support rod, and then the bottom end of the support rod is fixed to one side of the tree, so that the zero scale value of the angle scale value 85 is consistent with the horizontal scale line 5, and then, the staff observes the corresponding environment through the horizontal observation hole 84, and then, the first rotating cap 813 is turned. Since the pitch circle radius of the gear plate 812 is smaller than the structure radius of the pitch circle of the main tooth structure 87, the pitch circle radius of the gear plate 812 is smaller than the structure radius of the pitch circle of the first rotating cap 813. The structural radius of 13 will reduce the rotation speed of the third rotating column 83 and cause the angle scale value 85 to change. Finally, when the staff observes the measuring point of the banana tree through the horizontal observation hole 84, the rotation of the first rotating cap 813 is stopped. At this time, by observing the angle scale value 85 corresponding to the horizontal scale line 5 at this time, the pitch angle θ at this time can be obtained. The height of the banana tree is measured using the same operating steps as "CN220829156U" to obtain the corresponding tree height value.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A banana tree height measuring device, comprising an L-shaped mounting plate (1), a transverse hollow cylinder structure (2) integrally arranged on one side of a longitudinal vertical surface of the L-shaped mounting plate (1), a No. 1 component mounting cavity (3) arranged inside one end of the transverse hollow cylinder structure (2), a No. 2 component mounting cavity (4) arranged at one end of the No. 1 component mounting cavity (3), a horizontal scale line (5) arranged on the outer circumferential surface of the transverse hollow cylinder structure (2), an arc-shaped fixing plate (6) fixedly mounted on the top of the outer circumferential surface of the transverse hollow cylinder structure (2), and a No. 1 rod body through hole (7) arranged in the arc-shaped fixing plate (6) and the transverse hollow cylinder structure (2), characterized in that: Also includes, A rotating angle observation mechanism (8) is provided inside thereof with a second rotating column (82) rotatably mounted inside the second component mounting cavity (4), a first rotating cap (813) capable of reducing the rotation speed of the second rotating column (82), and an angle scale value (85) provided at the end of the second rotating column (82) and obtaining a corresponding angle through a difference with a horizontal scale line (5); and an adjustable brake mechanism (9), which is provided with an arc-shaped abutment plate (910) abutting against the outer circumference of the second rotating column (82), a lower movable plate (96) capable of longitudinally moving with the arc-shaped abutment plate (910), a coil spring (98) exerting downward elastic pressure on the lower movable plate (96), and an upper movable plate (97) capable of controlling the elastic strength of the coil spring (98); The rotating angle observation mechanism (8) comprises a first rotating column (81) installed inside the first component installation cavity (3) via a bearing; the first rotating column (81) is provided with a second rotating column (82) on the end surface facing the inside of the second component installation cavity (4) and having an integral structure with the first rotating column (81) and being located inside the second component installation cavity (4); the second rotating column (82) is provided with a third rotating column (83) on one end located outside the second component installation cavity (4) and having an integral structure with the first rotating column (82); the end surface of the third rotating column (83) is provided with a horizontal observation hole (84); the outer circumferential surface of the third rotating column (83) is provided with an angle scale value (85); the other end surface of the first rotating column (81) is provided with a tooth setting groove (86) with an inner concave structure; the first rotating column (81) is provided with a tooth setting groove (86) at the tooth setting groove. The inner circumferential surface of (86) is provided with a plurality of main tooth structures (87) integrally formed therewith, the L-shaped mounting plate (1) is fixedly installed with a transverse fixing rod (89) on the corresponding vertical surface, one end of the transverse fixing rod (89) is fixedly installed with a fixing vertical plate (88), a No. 1 shaft mounting hole (810) is provided inside the fixing vertical plate (88), a No. 1 rotating shaft (811) that can rotate is installed inside the No. 1 shaft mounting hole (810) through a bearing on the fixing vertical plate (88), a No. 1 rotating cap (813) is fixedly installed on one end of the No. 1 rotating shaft (811), a gear plate (812) located inside the tooth setting groove (86) is fixedly installed on the other end of the No. 1 rotating shaft (811), and the gear plate (812) and the main tooth structure (87) are meshed with each other.

2. A banana tree height measuring device according to claim 1, characterized in that: The axis line of the horizontal observation hole (84), the zero scale value of the angle scale value (85), and the horizontal scale line (5) are located on the same horizontal plane in an initial state.

3. A banana tree height measuring device according to claim 2, characterized in that: The pitch circle radius of the gear plate (812) is smaller than the structural radius of the pitch circle of the main tooth structure (87), and the pitch circle radius of the gear plate (812) is smaller than the structural radius of the number one rotating cap (813).

4. A banana tree height measuring device according to claim 3, characterized in that: The adjustable brake mechanism (9) comprises a longitudinal hollow shell (91), the bottom of the longitudinal hollow shell (91) is provided with a first fixing plate (92) which is integrally structured with the longitudinal hollow shell (91) and fixedly mounted on the top of the arc-shaped fixing plate (6), the interior of the longitudinal hollow shell (91) is provided with a longitudinal component movable cavity (93), the bottom end of the longitudinal hollow shell (91) is provided with a second rod body through hole (94) which connects the bottom end of the longitudinal component movable cavity (93) and the top end of the first rod body through hole (7), the top end of the longitudinal hollow shell (91) is provided with an internal threaded hole (95) which connects the external space and the top end of the longitudinal component movable cavity (93), the longitudinal hollow shell (91) is provided with a lower movable plate (96) which can move axially along the longitudinal component movable cavity (93) and ... An upper movable plate (97) is provided for axial movement of the movable chamber (93), and the upper movable plate (97) is located directly above the lower movable plate (96); a longitudinal telescopic rod (99) is fixedly installed at the bottom end of the lower movable plate (96) and passes through the No. 2 rod body through hole (94) and the No. 1 rod body through hole (7); an arc-shaped contact plate (910) which is integrally formed with the longitudinal telescopic rod (99) and contacts the outer circumferential surface of the No. 2 rotating column (82); a helical spring (98) in a compressed state is arranged between the upper movable plate (97) and the lower movable plate (96); a longitudinal externally threaded rod (911) which can rotate is installed at the top end of the upper movable plate (97) through a bearing; the rod body of the longitudinal externally threaded rod (911) passes through the internally threaded hole (95), and the two are connected at the through position by a threaded structure; and a No. 2 rotating cap (912) which is integrally formed with the longitudinal externally threaded rod (911) is arranged at the top end of the longitudinal externally threaded rod (911).

5. A banana tree height measuring device according to claim 4, characterized in that: The structural shape of the cross section of the second rod body through hole (94) is consistent with the structural shape of the cross section of the longitudinal telescopic rod (99), both of which are polygonal structures, and the structural dimensions of the cross section of the second rod body through hole (94) match the structural dimensions of the cross section of the longitudinal telescopic rod (99).

6. A banana tree height measuring device according to claim 5, characterized in that: The thread structure comprises an internal thread structure arranged in the internal thread hole (95) and an external thread structure arranged at the rod body of the longitudinal external thread rod (911), and the internal thread structure matches the external thread structure.

7. A banana tree height measuring device according to any one of claims 1 to 6, characterized in that: It also comprises a connection angle adjustment mechanism (10), the interior of which is provided with a hemispherical shell (101) fixedly mounted on the bottom surface of the L-shaped mounting plate (1), a rotating ball head (105) mounted inside the hemispherical shell (101) and capable of rotating, and a damping sleeve (104) embedded between the hemispherical shell (101) and the rotating ball head (105) and capable of providing a damping effect on the rotation of both.

8. A banana tree height measuring device according to claim 7, characterized in that: The connection angle adjustment mechanism (10) comprises a hemispherical shell (101); a second fixing plate (102) which is integrally formed with the hemispherical shell (101) and fixedly mounted on the bottom surface of the L-shaped mounting plate (1) is arranged on the top of the hemispherical shell (101); a hemispherical cavity (103) is arranged inside the hemispherical shell (101); a rotatable rotating ball head (105) is arranged inside the hemispherical shell (101) and located inside the hemispherical cavity (103); a damping sleeve (104) is embedded between the hemispherical shell (101) and the rotating ball head (105); and a third fixing plate (106) which is integrally formed with the hemispherical shell and can be connected to an external support rod is arranged at the bottom end of the rotating ball head (105).

9. A banana tree height measuring device according to claim 8, characterized in that: The friction force generated by the damping sleeve (104) on the rotating ball head (105) is sufficient to keep the rotating ball head (105) in a stationary state during operation.

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