A fruit tree radial growth observation instrument and use method thereof

Abstract

The present invention relates to the technical field of tree monitoring equipment, and discloses a fruit tree radial growth observation instrument and a method for using the same. The fruit tree radial growth observation instrument comprises a measuring rope and a clamp mechanism, wherein the clamp mechanism is arranged in close contact with the tree, the measuring rope is arranged on the clamp mechanism, and the measuring rope and the clamp mechanism are slidably matched, and the measuring rope contacts the outer wall of the tree and horizontally surrounds the outer side of the tree. The present invention uses the clamp mechanism to cooperate with the measuring rope to monitor and measure the radial direction of the tree, and can be adaptively adjusted according to the bark shedding of the tree, so that the monitoring is more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of tree monitoring equipment, and in particular to a fruit tree radial growth observation instrument and a use method thereof. Background Art

[0002] In the existing technology, radial growth observation of fruit trees is an important means to study the growth law of fruit trees and optimize planting management. The radial growth observation of fruit trees mainly monitors the changes in the diameter or circumference of the fruit tree trunk in real time to understand the growth status and development trend of fruit trees. This observation method is helpful to study the biological characteristics of fruit trees, improve orchard management, and provide agricultural meteorological basis for introduction and breeding.

[0003] The existing patent (Announcement No.: CN111504217B) discloses a tree radial growth deformation measurement and real-time monitoring device and its working method, which includes two arc-shaped clamps hinged to each other at one end, and an elastic buckle assembly and a real-time monitoring device arranged at the other end of the two arc-shaped clamps. Its working method includes the following steps: Step 1, fix the tree radial growth deformation measurement and real-time monitoring device at the tree height of 1.3 meters at the breast diameter of the tree to be measured; Step 2, the central measuring piece of the real-time monitoring device is stretched radially, causing the central wavelength of the fiber grating sensor on the surface of the measuring piece to shift; Step 3, the fiber grating sensor sends the real-time monitoring data in step 2 to the fiber grating regulator; Step 4, the fiber grating regulator transmits the deformation data collected by the connected fiber grating sensor to the computer. The invention can monitor the growth of trees in real time and analyze data, and has low cost, popularity, good portability, and simple operation.

[0004] In the process of implementing the invention, it was found that at least the following problems in the prior art have not been solved: the existing radial monitoring of trees is to wrap the outer periphery of the tree and fix it with a locking device, but this method will affect the normal growth and development of the tree; and if the bark of the tree falls off during the monitoring process, it will affect the monitoring of the tree, and the existing monitoring equipment cannot adaptively adjust according to the situation of bark falling off due to natural factors during the growth of the tree. Summary of the invention

[0005] The purpose of the present invention is to provide a fruit tree radial growth observation instrument and a method of using the same to solve the problems raised in the above background technology. To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A fruit tree radial growth observation instrument comprises a measuring rope and a clamp mechanism, wherein the clamp mechanism is arranged in close contact with the tree, the measuring rope is arranged on the clamp mechanism, and the measuring rope and the clamp mechanism are slidably matched, and the measuring rope contacts the outer wall of the tree and horizontally surrounds the outer side of the tree.

[0007] Preferably, the clamp mechanism includes an articulated laminating frame, two groups of locking laminating frames and two groups of folding frames, the articulated laminating frame is arranged to fit the outer wall of the tree, one end of the two groups of folding frames are relatively arranged on the top of the articulated laminating frame, and the folding frame is rotatably connected to the articulated laminating frame, the two groups of locking laminating frames are respectively arranged at the other ends of the two groups of folding frames, and the locking laminating frame is rotatably connected to the folding frame, the articulated laminating frame and the two groups of locking laminating frames are arranged on the outer wall of the tree in a relative structure, the two groups of folding frames extend around the outer wall of the tree, and a number of bearing members are also provided at the position where the folding frame contacts the outer wall of the tree.

[0008] Preferably, several of the bearing members include a bearing frame, a connecting spring, a clamping frame and a ring sleeve, the bearing frame is arranged on the folding frame, a sliding groove is provided on the bearing frame, the clamping frame is arranged on the bearing frame and slidably cooperates with the sliding groove, the two ends of the connecting spring are respectively connected to the bearing frame and the clamping frame, the ring sleeve is fixedly arranged at the port of the clamping frame facing the tree side, and the measuring rope is sleeved in the ring sleeve.

[0009] Preferably, the outer walls of the two groups of locking and fitting frames are both provided with hinged support frames, the outer walls of the support frames are provided with through openings, and positioning pins are inserted into the through openings on the two groups of support frames.

[0010] Preferably, the tops of the two groups of support frames are each provided with a groove, and a movable resistance member is fixedly arranged in the groove, and the movable resistance member includes a hollow sleeve and three resistance balls. The hollow sleeve is fixedly arranged in a receiving groove on the support frame, and a hollow conical cylinder is provided at the front end of the hollow sleeve, and the three resistance balls are embedded in the hollow conical cylinder. The measuring rope passes through the hollow sleeve and the hollow conical cylinder and frictionally fits with the resistance balls.

[0011] Preferably, the two groups of support frames are further provided with a rotatable measuring disk, the outer wall of the measuring disk is provided with a scale, and the inside of the measuring disk is provided with a graduation groove for winding a measuring rope.

[0012] Preferably, both ends of the measuring rope pass through the movable resistance member on the support frame, move toward the measuring disk, and are wound around the measuring disk.

[0013] Preferably, the inner walls of the hinged laminating frame and the two sets of locking laminating frames are provided with adhesive patches on the sides in contact with the tree, and are provided with detachable fixing pins.

[0014] Preferably, the method for using the fruit tree radial growth observation instrument comprises the following steps:

[0015] S1: When measuring the radial growth of a tree, the monitoring personnel will contact the hinged fitting frame with the outer wall of the tree to be measured, and then respectively unfold the two sets of locking fitting frames around the outer wall of the tree and move them to the opposite side of the hinged fitting frame. The two sets of locking fitting frames will move together and fit the outer wall of the tree. The monitoring personnel will push the unfolded folding frame toward the outer wall of the tree, and the part of the folding frame provided with the bearing member will contact the outer wall of the tree and then surround the outer wall of the tree. The contact between the bearing member and the outer wall of the tree can enable the measuring rope to surround the outer wall of the tree, so that the measuring rope can measure and monitor the radial direction of the tree. The hinged fitting frame, the two sets of locking fitting frames and the two sets of folding frames are used to limit the outer wall of the tree, so that the measuring rope can contact the outer wall of the tree for monitoring and measurement. When the tree grows, the outer diameter expansion of the tree can be adaptively changed with the outer diameter of the tree, and will not affect the growth of the tree.

[0016] S2: When the folding frame surrounds the outer wall of the tree, the ring sleeve fixed on the clamping frame will move toward the outer wall of the tree under the action of the connecting spring force, so that the measuring rope will contact the outer wall of the tree. When the outer diameter of the tree expands outward, it will drive the measuring rope to move in the ring sleeve, so as to monitor and measure the outer diameter of the tree in real time. With this setting, when the bark on the outer wall of the tree falls off during the growth process, the measuring rope can still contact the outer diameter of the tree under the action of the connecting spring, so as to monitor the radial direction of the tree in real time. The spacing between each group of bearings is small, so there will be no large error when measuring the outer wall of the tree with the measuring rope, avoiding the influence on the measurement data. Compared with directly setting the measuring rope on the folding frame, it can still play the role of real-time monitoring when the bark falls off. The folding and rotation of the folding frame is not smooth, which can effectively support the bearings without affecting the measuring rope, thereby improving the accuracy of the radial measurement of the tree.

[0017] S3: When the measuring rope is wrapped around the periphery of the tree, the monitoring personnel pull the two ends of the measuring rope outward from the measuring disk to make the measuring rope fit with the outer diameter of the tree. When the measuring rope moves, it will drive the measuring disk to rotate. At this time, the value of the measuring disk rotation is the initial value of the tree's radial direction. The monitoring personnel record the initial value. When the tree grows and the radial direction of the tree changes, the two ends of the measuring rope will move from the measuring disk toward the tree, which will drive the measuring disk to rotate and then monitor the value after the radial change of the tree. The measuring rope passes through three sets of resistance balls in the hollow sleeve and the hollow conical cylinder to resist the movement of the measuring rope, thereby making the radial monitoring of the tree more stable. This method is simple to operate for radial monitoring of trees, and can intuitively judge the value of the radial change of the tree, which is convenient for monitoring personnel to use.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] In the present invention, an articulated fitting frame, two sets of locking fitting frames and two sets of folding frames are used to limit the outer wall of the tree, so that the measuring rope can contact the outer wall of the tree for monitoring and measurement. When the tree grows, the outer diameter of the tree expands and the folding frame can adaptively change with the outer diameter of the tree, without affecting the growth of the tree.

[0020] In the present invention, when the measuring rope is used to measure the outer wall of the tree, there will be no large error affecting the measurement data. Compared with directly setting the measuring rope on the folding frame, it can still achieve the effect of real-time monitoring when the bark falls off. The folding and rotating structure of the folding frame can effectively support the bearing part without affecting the measuring rope, thereby improving the accuracy of radial measurement of the tree.

[0021] In the present invention, the monitoring personnel record the initial values, and when the tree grows and the radial direction of the tree changes, the two ends of the measuring rope will move from the measuring disk toward the tree, which will drive the measuring disk to rotate and thus monitor the values ​​after the radial change of the tree in real time. The measuring rope passes through the three groups of resistance balls in the hollow sleeve and the hollow conical cylinder to act as resistance to the movement of the measuring rope, thereby making the radial monitoring of the tree more stable. The radial monitoring of the tree using this method is simple to operate, and the value of the radial change of the tree can be judged intuitively, which is convenient for the monitoring personnel to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 1 ;

[0024] Figure 3 It is a partial three-dimensional structural diagram of the present invention (open state);

[0025] Figure 4 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 2 ;

[0026] Figure 5 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 3 ;

[0027] Figure 6 It is a partial three-dimensional structural cross-sectional view of the present invention;

[0028] Figure 7 It is a schematic diagram of the local three-dimensional structure of the present invention Figure 4 .

[0029] In the figure: 1. measuring rope; 2. clamp mechanism; 21. hinged fitting frame; 22. locking fitting frame; 23. folding frame; 3. bearing member; 31. bearing frame; 32. connecting spring; 33. clamping frame; 34. ring sleeve; 4. supporting frame; 41. positioning pin; 5. moving resistance member; 51. hollow sleeve; 52. hollow conical cylinder; 53. resistance ball; 6. measuring disk; 61. scale; 62. graduation groove; 7. adhesive patch; 71. fixing pin. 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 technical personnel in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figures 1 to 7 The present invention provides a technical solution: a fruit tree radial growth observation instrument, comprising a measuring rope 1 and a clamp mechanism 2, the clamp mechanism 2 is arranged to fit the tree, the measuring rope 1 is arranged on the clamp mechanism 2, and the measuring rope 1 and the clamp mechanism 2 are slidably matched, the measuring rope 1 is in contact with the outer wall of the tree and horizontally surrounds the outside of the tree.

[0032] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the clamp mechanism 2 includes an articulated laminating frame 21, two groups of locking laminating frames 22 and two groups of folding frames 23. The articulated laminating frame 21 is arranged to fit the outer wall of the tree, one end of the two groups of folding frames 23 is relatively arranged on the top of the articulated laminating frame 21, and the folding frames 23 are rotatably connected with the articulated laminating frame 21, the two groups of locking laminating frames 22 are respectively arranged at the other ends of the two groups of folding frames 23, and the locking laminating frames 22 are rotatably connected with the folding frames 23, the articulated laminating frame 21 and the two groups of locking laminating frames 22 are arranged on the outer wall of the tree in a relative structure, the two groups of folding frames 23 extend around the outer wall of the tree, and a number of bearing members 3 are also provided at the position where the folding frames 23 contact the outer wall of the tree, and the folding frames 23 include a plurality of short rods hinged in sequence.

[0033] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, several of the supporting members 3 include a supporting frame 31, a connecting spring 32, a clamping frame 33 and a ring sleeve 34. The supporting frame 31 is arranged on the folding frame 23. A sliding groove is provided on the supporting frame 31. The clamping frame 33 is arranged on the supporting frame 31 and slidably cooperates with the sliding groove. The two ends of the connecting spring 32 are respectively connected to the supporting frame 31 and the clamping frame 33. The ring sleeve 34 is fixedly arranged at the end of the clamping frame 33 facing the tree side, and the measuring rope 1 is sleeved in the ring sleeve 34.

[0034] When measuring the radial growth of a tree, the monitoring personnel will bring the hinged fitting frame 21 into contact with the outer wall of the tree to be measured, and then respectively unfold the two sets of locking fitting frames 22 around the outer wall of the tree and move them to the opposite side of the hinged fitting frame 21. The two sets of locking fitting frames 22 will move close to fit the outer wall of the tree. The monitoring personnel will push the unfolded folding frame 23 toward the outer wall of the tree. The portion of the folding frame 23 where the supporting member 3 is provided will contact the outer wall of the tree and thus surround the outer wall of the tree. The contact of the supporting member 3 with the outer wall of the tree can enable the measuring rope 1 to surround the outer wall of the tree, thereby enabling the measuring rope 1 to perform radial measurement and monitoring of the tree. The hinged fitting frame 21, two sets of locking fitting frames 22 and two sets of folding frames 23 are used to limit the outer wall of the tree, thereby enabling the measuring rope 1 to contact the outer wall of the tree for monitoring and measurement. When the tree grows, the outer diameter of the tree expands, and the folding frame 23 can adapt to the outer diameter of the tree and change without affecting the growth of the tree.

[0035] When the folding frame 23 surrounds the outer wall of the tree, the ring sleeve 34 fixedly arranged on the clamping frame 33 will move toward the outer wall of the tree under the action of the connecting spring 32, thereby making the measuring rope 1 contact with the outer wall of the tree. When the outer diameter of the tree expands outward, it will drive the measuring rope 1 to move in the ring sleeve 34, so as to monitor and measure the outer diameter of the tree in real time. With this arrangement, when the bark on the outer wall of the tree falls off during the growth process, the measuring rope 1 can still contact the outer diameter of the tree under the action of the connecting spring 32, thereby playing a role in real-time monitoring of the radial direction of the tree. Moreover, the spacing between each group of bearings 3 is small, so there will be no large error when measuring the outer wall of the tree with the measuring rope 1, thereby avoiding affecting the measurement data. Compared with directly arranging the measuring rope 1 on the folding frame 23, the above structure can ensure that the real-time monitoring effect can be achieved even if the bark falls off. The folding and rotation of the folding frame 23 can ensure that it can effectively support the bearings 3 without affecting the measuring rope 1, thereby improving the accuracy of the radial measurement of the tree.

[0036] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the outer walls of the two sets of locking and fitting frames 22 are both provided with hinged support frames 4, the outer walls of the support frames 4 are provided with through openings, and positioning pins 41 are inserted into the through openings on the two sets of the support frames 4;

[0037] When the two sets of locking and fitting frames 22 are close to each other, the operator inserts the positioning pin 41 into the through hole on the support frame 4, and then fixes the two sets of locking and fitting frames 22 to make the two sets of locking and fitting frames 22 a whole, so that the two sets of locking and fitting frames 22 will not be separated during the growth of the tree, thereby avoiding affecting the measuring rope 1.

[0038] In this embodiment, Figure 6 and Figure 7 As shown, the tops of the two groups of support frames 4 are both provided with slots, and a movable resistance member 5 is fixedly arranged in the slots, and the movable resistance member 5 comprises a hollow sleeve 51 and three resistance balls 53, the hollow sleeve 51 is fixedly arranged in a receiving groove on the support frame 4, a hollow conical cylinder 52 is arranged at the front end of the hollow sleeve 51, and the three resistance balls 53 are embedded in the hollow conical cylinder 52, and the measuring rope 1 passes through the hollow sleeve 51 and the hollow conical cylinder 52;

[0039] The measuring rope 1 is arranged in the ring sleeve 34 on the plurality of bearing members 3, and the two ends of the measuring rope 1 pass through the moving resistance member 5 on the supporting frame 4 and are frictionally matched with the resistance ball 53 to move toward the measuring disk 6 and be wound around the measuring disk 6;

[0040] When the measuring rope 1 is wrapped around the periphery of the tree, the monitoring personnel pull the two ends of the measuring rope 1 outward from the measuring disk 6 to make the measuring rope 1 fit with the outer diameter of the tree. When the measuring rope 1 moves, it will drive the measuring disk 6 to rotate. At this time, the value of the rotation of the measuring disk 6 is the initial value of the tree's radial direction. The monitoring personnel record the initial value. When the tree grows and the radial direction of the tree changes, the two ends of the measuring rope 1 will move from the measuring disk 6 toward the tree, which will drive the measuring disk 6 to rotate and then monitor the value after the radial change of the tree. The measuring rope 1 passes through the three groups of resistance balls 53 in the hollow sleeve 51 and the hollow conical cylinder 52 to act as a resistance to the movement of the measuring rope 1, thereby making the radial monitoring of the tree more stable. This method is simple to operate for radial monitoring of trees, and can intuitively judge the value of the radial change of trees, which is convenient for monitoring personnel to use.

[0041] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the two groups of support frames 4 are further provided with a rotatable measuring disc 6, the outer wall of the measuring disc 6 is provided with a scale 61, and the measuring disc 6 is provided with a graduation groove 62 for winding the measuring rope 1;

[0042] When the measuring rope 1 is wound around the measuring disc 6 , it is inserted into the graduation groove 62 on the measuring disc 6 . Then, when the measuring rope 1 moves, it can drive the measuring disc 6 to rotate and intuitively measure the radial change value of the tree through the scale 61 .

[0043] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the inner walls of the hinged laminating frame 21 and the two sets of locking laminating frames 22 are provided with adhesive patches 7 on the side in contact with the tree, and are provided with detachable fixing pins 71;

[0044] The use of adhesive patch 7 and removable fixing pin 71 can make the hinged laminating frame 21 and two sets of locking laminating frames 22 fit tightly against the outer wall of the tree, thereby avoiding the influence of position change of the hinged laminating frame 21 and the locking laminating frame 22 on the detection during radial monitoring of the outer wall of the tree.

[0045] The use method and advantages of the present invention: The use method of the fruit tree radial growth observation instrument has the following working process:

[0046] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown:

[0047] S1: When measuring the radial growth of a tree, the monitoring personnel will contact the hinged fitting frame 21 with the outer wall of the tree to be measured, and then respectively unfold the two sets of locking fitting frames 22 around the outer wall of the tree and move them to the opposite side of the hinged fitting frame 21. The two sets of locking fitting frames 22 are brought close to fit the outer wall of the tree. The monitoring personnel will push the unfolded folding frame 23 toward the outer wall of the tree. The part of the folding frame 23 provided with the bearing member 3 will contact the outer wall of the tree and then surround the outer wall of the tree. The contact of the bearing member 3 with the outer wall of the tree can enable the measuring rope 1 to surround the outer wall of the tree, so that the measuring rope 1 can measure and monitor the radial direction of the tree. The hinged fitting frame 21, the two sets of locking fitting frames 22 and the two sets of folding frames 23 are used to limit the outer wall of the tree, so that the measuring rope 1 can contact the outer wall of the tree for monitoring and measurement. When the tree grows, the outer diameter of the tree expands, and the folding frame 23 can change adaptively with the outer diameter of the tree, which will not affect the growth of the tree.

[0048] S2: When the folding frame 23 surrounds the outer wall of the tree, the ring sleeve 34 fixedly arranged on the clamping frame 33 will move toward the outer wall of the tree under the action of the connecting spring 32, thereby making the measuring rope 1 contact with the outer wall of the tree. When the outer diameter of the tree expands outward, it will drive the measuring rope 1 to move in the ring sleeve 34, so as to monitor and measure the outer diameter of the tree in real time. With this arrangement, when the bark on the outer wall of the tree falls off during the growth process, the measuring rope 1 can still contact the outer diameter of the tree under the action of the connecting spring 32, thereby playing a role in real-time monitoring of the radial direction of the tree. Moreover, the spacing between each group of bearings 3 is small, so there will be no large error when the measuring rope 1 is used to measure the outer wall of the tree, thereby avoiding affecting the measurement data. Compared with directly setting the measuring rope 1 on the folding frame 23, it can still play a role in real-time monitoring when the bark falls off. The folding and rotating structure of the folding frame 23 can effectively support the bearings 3 without affecting the measuring rope 1, thereby improving the accuracy of the radial measurement of the tree.

[0049] S3: When the measuring rope 1 is wrapped around the periphery of the tree, the monitoring personnel pull the two ends of the measuring rope 1 outward from the measuring disk 6 to make the measuring rope 1 fit with the outer diameter of the tree. When the measuring rope 1 moves, it will drive the measuring disk 6 to rotate. At this time, the value of the rotation of the measuring disk 6 is the initial value of the tree's radial direction. The monitoring personnel record the initial value. When the tree grows and the radial direction of the tree changes, the two ends of the measuring rope 1 will move from the measuring disk 6 toward the tree, which will drive the measuring disk 6 to rotate and then monitor the value after the radial change of the tree. The measuring rope 1 passes through the three groups of resistance balls 53 in the hollow sleeve 51 and the hollow conical cylinder 52 to act as a resistance to the movement of the measuring rope 1, thereby making the radial monitoring of the tree more stable. This method is simple to operate for radial monitoring of trees, and can intuitively judge the value of the radial change of the tree, which is convenient for monitoring personnel to use.

Claims

1. A fruit tree radial growth observation instrument, characterized in that: It comprises a measuring rope (1) and a clamp mechanism (2), wherein the clamp mechanism (2) is arranged to fit the tree, the measuring rope (1) is arranged on the clamp mechanism (2), and the measuring rope (1) and the clamp mechanism (2) are slidably matched, and the measuring rope (1) is in contact with the outer wall of the tree and horizontally surrounds the outer side of the tree; The clamp mechanism (2) comprises an articulated laminating frame (21), two groups of locking laminating frames (22) and two groups of folding frames (23); the articulated laminating frame (21) is arranged to be in contact with the outer wall of the tree; one end of the two groups of folding frames (23) are arranged relatively on the top of the articulated laminating frame (21); the folding frames (23) are rotatably connected to the articulated laminating frame (21); the two groups of locking laminating frames (22) are respectively arranged at the other ends of the two groups of folding frames (23); the locking laminating frames (22) are rotatably connected to the folding frames (23); the articulated laminating frame (21) and the two groups of locking laminating frames (22) are arranged on the outer wall of the tree in a relative structure; the two groups of folding frames (23) extend around the outer wall of the tree; and a plurality of bearing members (3) are also provided at the portion where the folding frames (23) contact the outer wall of the tree; The plurality of bearing members (3) each comprises a bearing frame (31), a connecting spring (32), a clamping frame (33) and a ring sleeve (34); the bearing frame (31) is arranged on the folding frame (23); a slide groove is provided on the bearing frame (31); the clamping frame (33) is arranged on the bearing frame (31) and slidably cooperates with the slide groove; two ends of the connecting spring (32) are respectively connected to the bearing frame (31) and the clamping frame (33); the ring sleeve (34) is fixedly arranged at a port of the clamping frame (33) facing the tree; and the measuring rope (1) is sleeved in the ring sleeve (34); The outer walls of the two groups of locking and fitting frames (22) are both provided with support frames (4) that are hingedly arranged, and the outer walls of the support frames (4) are provided with through openings, and positioning pins (41) are inserted into the through openings on the two groups of support frames (4).

2. The fruit tree radial growth observation instrument according to claim 1, characterized in that: The tops of the two groups of support frames (4) are both provided with slots, and movable resistance members (5) are fixedly arranged in the slots. The movable resistance members (5) include a hollow sleeve (51) and three resistance balls (53). The hollow sleeve (51) is fixedly arranged in a receiving groove on the support frame (4). A hollow conical cylinder (52) is provided at the front end of the hollow sleeve (51). The three resistance balls (53) are embedded in the hollow conical cylinder (52). The measuring rope (1) passes through the hollow sleeve (51) and the hollow conical cylinder (52) to frictionally engage with the resistance balls (53).

3. The fruit tree radial growth observation instrument according to claim 2, characterized in that: The two groups of support frames (4) are also provided with a rotatable measuring disc (6), the outer wall of the measuring disc (6) is provided with a scale (61), and the measuring disc (6) is provided with a graduation groove (62) around which the measuring rope (1) is wound.

4. The fruit tree radial growth observation instrument according to claim 3, characterized in that: Both ends of the measuring rope (1) pass through the moving resistance member (5) on the support frame (4), move in the direction of the measuring disc (6), and are wound around the measuring disc (6).

5. The fruit tree radial growth observation instrument according to claim 4, characterized in that: An adhesive patch (7) is provided on the side of the inner wall of the hinged laminating frame (21) and the two sets of locking laminating frames (22) that are in contact with the tree, and a detachable fixing pin (71) is provided.

6. The fruit tree radial growth observation instrument according to claim 5, characterized in that: The method of use includes the following steps: S1: When measuring the radial growth of a tree, the monitoring personnel brings the hinged fitting frame (21) into contact with the outer wall of the tree to be measured, and then respectively unfolds the two sets of locking fitting frames (22) around the outer wall of the tree and moves them to the opposite side of the hinged fitting frame (21). The two sets of locking fitting frames (22) are brought together to fit the outer wall of the tree. The monitoring personnel pushes the unfolded folding frame (23) toward the outer wall of the tree. The portion of the folding frame (23) provided with the bearing member (3) contacts the outer wall of the tree and thus surrounds the outer wall of the tree. The contact of the bearing member (3) with the outer wall of the tree enables the measuring rope (1) to surround the outer wall of the tree, thereby enabling the measuring rope (1) to measure and monitor the radial direction of the tree. S2: When the folding frame (23) surrounds the outer wall of the tree, the ring sleeve (34) fixedly arranged on the clamping frame (33) will move toward the outer wall of the tree under the action of the connecting spring (32), thereby making the measuring rope (1) contact the outer wall of the tree. When the outer diameter of the tree expands outward, it will drive the measuring rope (1) to move in the ring sleeve (34), thereby monitoring and measuring the outer diameter of the tree in real time; S3: When the measuring rope (1) is wrapped around the periphery of the tree, the monitoring personnel pull the two ends of the measuring rope (1) outward from the measuring disk (6) so that the measuring rope (1) fits the outer diameter of the tree. When the measuring rope (1) moves, it drives the measuring disk (6) to rotate. At this time, the value of the rotation of the measuring disk (6) is the initial value of the tree's radial direction. The monitoring personnel record the initial value. When the tree grows and the radial direction of the tree changes, the two ends of the measuring rope (1) move from the measuring disk (6) toward the tree, which drives the measuring disk (6) to rotate and monitors the value after the tree's radial direction changes. The measuring rope (1) passes through the three groups of resistance balls (53) in the hollow sleeve (51) and the hollow conical cylinder (52), which can play a role in resisting the movement of the measuring rope (1), thereby making the radial monitoring of the tree more stable.

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