A device for measuring the width of white elm leaves

Abstract

The present invention belongs to the technical field of plant measurement, and specifically is a device for measuring the leaf width of white elm leaves, including a detection plate, a slide plate fixedly connected to the middle part of the right end face of the detection plate, a lifting plate slidably connected to the inner side of the slide plate, sliding columns slidably connected to both sides of the lifting plate, the lower end of the sliding column is fixedly connected to a fixing plate, the middle part of the rear end face of the fixing plate is fixedly connected to a display, and a pull-out gap adjustment mechanism is provided on the detection plate to prevent multiple leaves from entering between a scanning head and the detection plate; the present invention adjusts the height of the scanning head by driving the protruding block rod to slide in the inner cavity of the sleeve to achieve measurement of the leaf width of leaves at different heights, and utilizes the pull-out gap adjustment mechanism to drive the baffles on both sides to slide in different directions at the same time, so that only a single leaf can pass through, thereby avoiding the situation where multiple leaves move to the gap between the scanning head and the detection plate at the same time, thereby affecting the measurement accuracy.

Description

Technical Field

[0001] The invention belongs to the technical field of plant measurement, in particular to a device for measuring the leaf width of an elm leaf. Background Art

[0002] White elm is a deciduous tree of the family Ulmus, genus Ulmus, also known as domestic elm or elm. This tree is widely distributed in China, especially in Northeast, North China, Northwest and other regions. In forestry production and garden management, regular measurement of white elm leaf width helps to monitor its growth rate and health status. By comparing leaf width data at different time points, the growth trend and growth amount of the tree can be evaluated, providing a basis for formulating reasonable management measures.

[0003] The patent with announcement number CN213778944U discloses a portable tree leaf area measuring device, including a detection box, a liquid crystal display fixedly connected to the front side of the detection box, a hinge installed at the upper left end of the liquid crystal display, a fixed plate installed at the upper right end of the hinge, an inspection slot opened at the rear side of the upper end of the fixed plate, two sets of pulleys installed at the rear side of the inspection slot, a connecting pin installed at the left side of the pulley, a support shaft arranged at the left side of the connecting pin, a pressure plate installed at the right side of the support shaft, a reset spring installed at the bottom right end of the pressure plate, a handle fixedly connected to the lower side of the reset spring, a carrying card installed at the front left end of the handle, a protective pad fixedly connected to the lower side of the carrying card, and a hanging ring fixedly connected to the right side of the protective pad. The portable tree leaf area measuring device has high integration, good adaptability, stable grip, smooth movement of leaves, good measurement accuracy, and is easy to carry.

[0004] However, the above technical solution still has the following deficiencies in practical application:

[0005] Since leaves are distributed at different heights, measuring only the width of leaves at a low height or a fixed height may not fully reflect the growth status and morphological characteristics of the entire tree leaf. Therefore, it is necessary to measure the width of leaves at different heights. When measuring the width of leaves at high places, since the entire device is handheld and the height of the personnel is limited, when measuring the width of leaves that are higher than the height of the personnel, the entire measurement process is more difficult, which affects the progress of the measurement work.

[0006] To this end, the present invention provides a device for measuring the leaf width of Ulmus pumila leaves. Summary of the invention

[0007] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the present invention proposes a device for measuring the leaf width of Ulmus pumila leaves.

[0008] The technical solution adopted by the present invention to solve the technical problem is: a leaf width measuring device for white elm leaves, comprising a detection plate, a slide plate is fixedly connected to the middle of the right end surface of the detection plate, a lifting plate is slidably connected to the inner side of the slide plate, sliding columns are slidably connected to both sides of the lifting plate, a fixed plate is fixedly connected to the lower end of the sliding column, a scanning head is arranged at the lower side of the fixed plate, a display is fixedly connected to the middle of the rear end surface of the fixed plate, and a pull-out gap adjustment mechanism is arranged on the detection plate to prevent multiple leaves from entering between the scanning head and the detection plate;

[0009] The pull-out gap adjustment mechanism includes baffles slidably connected to the left and right sides of the front end surface of the detection plate, the front end surface of the baffle is provided with a scissor-type telescopic mechanism, the front side of the scissor-type telescopic mechanism is provided with a displacement plate, the middle part of the front end surface of the displacement plate is slidably connected to an L-shaped rod through a slide rail, and one side of the L-shaped rod is slidably connected to a clamping plate;

[0010] A rotating block is fixedly connected to the middle of the lower end surface of the detection plate, a mounting seat is rotatably provided at the lower end of the rotating block, a fixed disk is fixedly connected to the lower end of the mounting seat, a bump rod is fixedly connected to the middle of the lower end surface of the fixed disk, the bump rod is slidably connected to a sleeve through a key slot, and the lower end of the sleeve is fixedly connected to the mounting plate.

[0011] Preferably, a threaded rod 2 is rotatably provided in the middle of the upper end surface of the mounting plate, the threaded rod 2 is threadedly connected to the bump rod, a motor 1 is fixedly connected to the middle of one side of the mounting plate, and the output end of the motor 1 is fixedly connected to the lower end of the threaded rod 2.

[0012] Preferably, the right end of the lifting plate is threadedly connected to a threaded rod one, the upper and lower ends of the threaded rod one are rotatably set on the slide plate, the upper surface of the slide plate is fixedly connected to a motor three, and the output end of the motor three is fixedly connected to the upper end of the threaded rod one.

[0013] Preferably, a spring 1 is sleeved on the lower end of the sliding column, a lower end of the spring is fixedly connected to the upper end surface of the fixing plate, and an upper end of the spring 1 is fixedly connected to the lower end surface of the lifting plate.

[0014] Preferably, one end of the baffle is threadedly connected to a bidirectional threaded rod, both ends of the bidirectional threaded rod are rotatably arranged on the detection plate, a motor four is fixedly connected to the front side of the right end of the detection plate, and the output end of the motor four is fixedly connected to the right end of the bidirectional threaded rod.

[0015] Preferably, one end of the rear side of the L-shaped rod is threadedly connected to threaded rod 2, both ends of threaded rod 2 are rotatably set on the displacement plate, a motor 5 is fixedly connected to the middle of one side of the front end surface of the displacement plate, and the output end of motor 5 is fixedly connected to one end of threaded rod 2.

[0016] Preferably, one end of the clamp is fixedly connected to a second spring, and the other end of the second spring is fixedly connected to the L-shaped rod.

[0017] Preferably, a handle is fixedly connected to the middle portion of the lower end surface of the mounting plate.

[0018] Preferably, a control panel is provided on the front end surface of the mounting plate.

[0019] Preferably, a second motor is fixedly connected to the upper side of the front end surface of the mounting seat, and an output end of the second motor is fixedly connected to the rotating block.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The present invention discloses a device for measuring the width of white elm leaves, which adjusts the height of the scanning head by driving the protruding block rod to slide in the inner cavity of the sleeve, so as to measure the width of leaves at different heights. In addition, a pull-out gap adjustment mechanism can be used to drive the baffles on both sides to slide in different directions at the same time according to the leaf area of ​​the leaf width to be measured, and adjust the distance between the two baffles so that only a single leaf can pass through, thereby avoiding the situation where multiple leaves move to the gap between the scanning head and the detection plate at the same time, thereby affecting the measurement accuracy. In addition, when the leaves at a high place move to between the scanning head and the detection plate and are pressed, the roots of the leaves can be clamped by the clamping plates, and then the displacement plates can be driven to move by the scissor-type telescopic mechanism, so that the clamping plates can be pulled on the roots of the leaves, so that the leaves are moved out from between the scanning head and the detection plate for measurement. In addition, by this pulling method, the leaves are moved toward their roots, so that the roots of the leaves will not be broken due to pulling during the measurement process, thereby ensuring the normal measurement.

[0022] 2. The device for measuring the width of white elm leaves described in the present invention utilizes motor 2 to drive the rotating block to rotate, thereby rotating the scanning head, and adjusting the angle of the scanning head, thereby improving the flexibility in measuring the width of leaves at high altitudes. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of the local three-dimensional structure at the fixed plate;

[0026] Figure 3 It is a schematic diagram of a local three-dimensional structure at a display;

[0027] Figure 4 It is a schematic diagram of the local three-dimensional structure of two parts of the threaded rod;

[0028] Figure 5 It is a schematic diagram of the local three-dimensional structure of the motor;

[0029] Figure 6 It is a schematic diagram of the local three-dimensional structure at the L-shaped rod;

[0030] Figure 7 It is a schematic diagram of the local three-dimensional structure at the scanning head;

[0031] Figure 8 It is a schematic diagram of the local three-dimensional structure of the splint.

[0032] In the figure: 1. sleeve; 2. mounting plate; 3. handle; 4. motor 1; 5. bump rod; 6. fixing plate; 7. motor 2; 8. detection plate; 9. bidirectional threaded rod; 10. baffle; 11. scissors-type telescopic mechanism; 12. lifting plate; 13. slide column; 14. spring 1; 15. fixing plate; 16. motor 3; 17. scanning head; 18. threaded rod 1; 19. display; 20. motor 4; 21. displacement plate; 22. clamping plate; 23. spring 2; 24. L-shaped rod; 25. threaded rod 2; 26. motor 5; 27. slide rail; 28. mounting seat; 29. ​​rotating block; 30. slide plate; 31. control panel. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0034] Please refer to Figure 1-Figure 8 The present invention provides a technical solution: a leaf width measuring device for white elm leaves, comprising a detection plate 8, a slide plate 30 is fixedly connected to the middle of the right end surface of the detection plate 8, a lifting plate 12 is slidably connected to the inner side of the slide plate 30, sliding columns 13 are slidably connected to both sides of the lifting plate 12, a fixed plate 15 is fixedly connected to the lower end of the sliding column 13, a scanning head 17 is arranged at the lower side of the fixed plate 15, a display 19 is fixedly connected to the middle of the rear end surface of the fixed plate 15, and a pull-out gap adjustment mechanism is arranged on the detection plate 8 to prevent multiple leaves from entering between the scanning head 17 and the detection plate 8;

[0035] The pull-out gap adjustment mechanism includes a baffle 10 slidably connected to the left and right sides of the front end surface of the detection plate 8, a scissor-type telescopic mechanism 11 is provided on the front end surface of the baffle 10, a displacement plate 21 is provided on the front side of the scissor-type telescopic mechanism 11, an L-shaped rod 24 is slidably connected to the middle of the front end surface of the displacement plate 21 through a slide rail 27, and a clamping plate 22 is slidably connected to one side of the L-shaped rod 24;

[0036] A rotating block 29 is fixedly connected to the middle part of the lower end surface of the detection plate 8, a mounting seat 28 is rotatably provided at the lower end of the rotating block 29, a fixed disk 6 is fixedly connected to the lower end of the mounting seat 28, a bump rod 5 is fixedly connected to the middle part of the lower end surface of the fixed disk 6, the bump rod 5 is slidably connected to the sleeve 1 through a key groove, and the lower end of the sleeve 1 is fixedly connected to the mounting plate 2.

[0037] In this embodiment, Figure 1-Figure 8 As shown, a threaded rod 25 is rotatably provided in the middle of the upper end surface of the mounting plate 2, and the threaded rod 25 is threadedly connected to the bump rod 5, and a motor 4 is fixedly connected to the middle of one side of the mounting plate 2, and the output end of the motor 4 is fixedly connected to the lower end of the threaded rod 25;

[0038] The right end of the lifting plate 12 is threadedly connected with a threaded rod 18, and the upper and lower ends of the threaded rod 18 are rotatably arranged on the slide plate 30. The upper end surface of the slide plate 30 is fixedly connected with a motor 3 16, and the output end of the motor 3 16 is fixedly connected to the upper end of the threaded rod 18;

[0039] A spring 14 is sleeved on the lower end of the sliding column 13, the lower end of the spring 14 is fixedly connected to the upper end surface of the fixing plate 15, and the upper end of the spring 14 is fixedly connected to the lower end surface of the lifting plate 12;

[0040] One end of the baffle 10 is threadedly connected to a bidirectional threaded rod 9, both ends of the bidirectional threaded rod 9 are rotatably arranged on the detection plate 8, and a motor 4 20 is fixedly connected to the front side of the right end of the detection plate 8, and the output end of the motor 4 20 is fixedly connected to the right end of the bidirectional threaded rod 9;

[0041] One end of the rear side of the L-shaped rod 24 is threadedly connected to a threaded rod 25, both ends of the threaded rod 25 are rotatably arranged on the displacement plate 21, a motor 5 26 is fixedly connected to the middle of one side of the front end surface of the displacement plate 21, and the output end of the motor 5 26 is fixedly connected to one end of the threaded rod 25;

[0042] One end of the clamping plate 22 is fixedly connected to a spring 23, and the other end of the spring 23 is fixedly connected to an L-shaped rod 24;

[0043] A handle 3 is fixedly connected to the middle of the lower end surface of the mounting plate 2;

[0044] A control panel 31 is provided on the front end surface of the mounting plate 2;

[0045] Specifically, the white elm is a deciduous tree of the genus Ulmus, the family Ulmus, also known as the domestic elm or elm. This tree is widely distributed in China, especially in the Northeast, North China, Northwest and other regions. In forestry production and garden management, regular measurement of the leaf width of the white elm helps to monitor its growth rate and health. By comparing the leaf width data at different time points, the growth trend and growth amount of the tree can be evaluated, providing a basis for formulating reasonable management measures. When the existing tree leaf area measurement device is used, the leaf is manually placed between the detection box and the fixed plate, and then the scanning head 17 is manually pulled or the scanning head 17 is driven to move so that the scanning head 17 and the leaf move relative to each other to obtain the leaf width data of the leaf. However, since the leaves are distributed at different heights, only measuring the leaf width at a low place or a fixed height may not fully reflect the growth status and morphological characteristics of the entire tree leaf. Therefore, it is necessary to measure the leaf width of the leaves at different heights. When measuring the leaf width of the leaves at a high place, since the entire device is handheld and the height of the personnel is limited, when measuring the leaf width of some leaves that are higher than the height of the personnel, the entire measurement process is relatively difficult, which affects the measurement work.

[0046] Therefore, when the present embodiment is in use, the personnel hold the handle 3 and use the control panel 31 to control the entire device. When the position of the white elm leaf whose leaf width needs to be measured is low, the leaf can be manually placed between the detection plate 8 and the scanning head 17, and then the motor 3 16 is started to drive the threaded rod 18 to rotate, so that the scanning head 17 descends and fits with the leaf. The leaf is clamped between the scanning head 17 and the detection plate 8, and the spring 14 is compressed. Then the scanning head 17 is turned on, and the root of the leaf is held by hand to pull the leaf outward to move the leaf out of the scanning head 17 and the detection plate 8. When the leaf moves, the scanning head 17 detects data such as the leaf width and area, and displays the data on the display 19, so that the leaf width measurement of the leaf can be realized.

[0047] When it is necessary to measure the leaf width of a leaf at a high place, the motor 1 4 can be used to drive the threaded rod 2 25 to rotate, so that the protruding rod 5 slides in the inner cavity of the sleeve 1, so that the fixed plate 6 rises, the scanning head 17 rises, and then the leaf is aligned with the gap between the scanning head 17 and the detection plate 8, and the leaf is clamped under the cooperation of the scanning head 17 and the detection plate 8; however, since the spacing between adjacent leaves may be small, multiple leaves may move to the gap between the scanning head 17 and the detection plate 8. For leaves with a lower height, personnel can manually push the adjacent leaves apart, but for leaves at a high place, it is inconvenient to operate. Therefore, according to the leaf area of ​​the leaf width to be measured, the motor 4 20 can be used to drive the bidirectional threaded rod 9 to rotate, so that the baffles 10 on both sides slide in different directions at the same time, and the distance between the two baffles 10 is adjusted so that only a single leaf can pass through, thereby avoiding the situation where multiple leaves move to the gap between the scanning head 17 and the detection plate 8, thereby affecting the measurement accuracy;

[0048] When the leaves at a high place move to between the scanning head 17 and the detection plate 8 and are pressed, the motors 5 26 on both sides can drive the threaded rod 25 to rotate, so that the L-shaped rod 24 slides, and the clamping plate 22 contacts the root of the leaf to clamp the root of the leaf. At the same time, under the buffering of the spring 23, the root of the leaf can be prevented from breaking. Then, the scissor-type telescopic mechanism 11 is used to drive the displacement plate 21 to move, so that the clamping plate 22 pulls the root of the leaf, so that the leaf is moved out from between the scanning head 17 and the detection plate 8, and the measurement work can be realized. In addition, by this pulling and pulling method, the leaf is moved toward its root direction, so that the root of the leaf will not be broken due to pulling during the measurement process, thereby ensuring the normal measurement work.

[0049] Thus, by driving the protruding rod 5 to slide in the inner cavity of the sleeve 1, the height of the scanning head 17 can be adjusted to realize the measurement of the leaf width of leaves at different heights. In addition, by utilizing the pull-out gap adjustment mechanism, the baffles 10 on both sides can be driven to slide in different directions at the same time according to the leaf area of ​​the leaf width to be measured, and the distance between the two baffles 10 can be adjusted so that only a single leaf can pass through, thereby avoiding the situation where multiple leaves are simultaneously moved to the gap between the scanning head 17 and the detection plate 8, thereby affecting the measurement accuracy. In addition, when the leaves at a high place move to between the scanning head 17 and the detection plate 8 and are pressed, the roots of the leaves can be clamped by the clamping plate 22, and then the displacement plate 21 can be driven to move by the scissor-type telescopic mechanism 11, so that the clamping plate 22 pulls the roots of the leaves, so that the leaves are moved out from between the scanning head 17 and the detection plate 8 for measurement. In addition, by this pulling method, the leaves are moved toward their roots, so that the roots of the leaves will not be broken due to pulling during the measurement process, thereby ensuring the normal progress of the measurement work.

[0050] In this embodiment, Figure 2 and Figure 3 As shown, the upper side of the front end surface of the mounting seat 28 is fixedly connected to the motor 2 7, and the output end of the motor 2 7 is fixedly connected to the rotating block 29;

[0051] Specifically, the motor 27 can be used to drive the rotating block 29 to rotate, so that the scanning head 17 can be rotated, and the angle of the scanning head 17 can be adjusted, thereby improving the flexibility in measuring the leaf width of leaves at high places.

[0052] Working principle: the personnel hold the handle 3 and use the control panel 31 to control the entire device. When the position of the white elm leaf whose leaf width needs to be measured is low, the leaf can be manually placed between the detection plate 8 and the scanning head 17, and then the motor 3 16 is started to drive the threaded rod 18 to rotate, so that the scanning head 17 descends and fits the leaf. The leaf is clamped between the scanning head 17 and the detection plate 8, and the spring 14 is compressed. Then the scanning head 17 is turned on, the root of the leaf is held, and the leaf is pulled outward to move the leaf from the scanning head 17 and the detection plate 8. When the leaf moves, the scanning head 17 detects the leaf width, area and other data, and The data is displayed on the display 19, and the leaf width measurement of the leaves can be realized; when the leaf width of the leaves at a high place needs to be measured, the threaded rod 25 can be driven to rotate by the motor 1 4, so that the protruding block rod 5 slides in the inner cavity of the sleeve 1, so that the fixed plate 6 rises and the scanning head 17 rises. At the same time, the rotating block 29 can be driven to rotate by the motor 2 7 to rotate the scanning head 17, so that the angle of the scanning head 17 can be adjusted, and then the leaves are aligned with the gap between the scanning head 17 and the detection plate 8, and the leaves are clamped with the cooperation of the scanning head 17 and the detection plate 8; however, since the spacing between adjacent leaves may be small, there will be In the case where multiple leaves move to the gap between the scanning head 17 and the detection plate 8, for leaves at a lower height, personnel can manually push the adjacent leaves apart, but for leaves at a higher position, it is inconvenient to operate. Therefore, according to the leaf area of ​​the leaf width to be measured, the motor 20 can be used to drive the bidirectional threaded rod 9 to rotate, so that the baffles 10 on both sides slide in different directions at the same time, and the distance between the two baffles 10 is adjusted so that only a single leaf can pass through, thereby avoiding the situation where multiple leaves move to the gap between the scanning head 17 and the detection plate 8, thereby affecting the measurement accuracy; when the leaves at a higher position move to between the scanning head 17 and the detection plate 8 and are pressed When the leaf is held, the motors 5 26 on both sides can drive the threaded rods 25 to rotate, so that the L-shaped rods 24 slide, and the clamping plates 22 contact the roots of the leaves to clamp the roots of the leaves. At the same time, under the buffering of the springs 23, the roots of the leaves can be prevented from breaking. Then, the scissor-type telescopic mechanism 11 is used to drive the displacement plate 21 to move, so that the clamping plates 22 pull the roots of the leaves, so that the leaves are moved out from between the scanning head 17 and the detection plate 8, and the measurement work can be realized. In addition, by this pulling and pulling method, the leaves are moved toward their roots, so that the roots of the leaves will not be broken due to pulling during the measurement process, thereby ensuring the normal measurement work.Thus, by driving the protruding rod 5 to slide in the inner cavity of the sleeve 1, the height of the scanning head 17 is adjusted to achieve the measurement of the leaf width of leaves at different heights. In addition, by using the pull-out gap adjustment mechanism, the baffles 10 on both sides can be driven to slide in different directions at the same time according to the leaf area of ​​the leaf width to be measured, and the distance between the two baffles 10 can be adjusted so that only a single leaf can pass through, thereby avoiding the situation where multiple leaves move to the gap between the scanning head 17 and the detection plate 8 at the same time, thereby affecting the measurement accuracy. In addition, when the leaves at a high place move to between the scanning head 17 and the detection plate 8 and are pressed, the root of the leaf can be clamped by the clamping plate 22, and then the displacement plate 21 can be driven to move by the scissor-fork telescopic mechanism 11, so that the clamping plate 22 pulls the root of the leaf, so that the leaf moves out from between the scanning head 17 and the detection plate 8 to perform the measurement work. In addition, by this pulling method, the leaf moves toward its root direction, so that the root of the leaf will not be broken due to pulling during the measurement process, thereby ensuring the normal measurement work. ;

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A device for measuring the leaf width of an elm tree, comprising a detection plate (8), characterized in that: A slide plate (30) is fixedly connected to the middle of the right end face of the detection plate (8); a lifting plate (12) is slidably connected to the inner side of the slide plate (30); sliding columns (13) are slidably connected to both sides of the lifting plate (12); a fixing plate (15) is fixedly connected to the lower end of the sliding column (13); a scanning head (17) is arranged on the lower side of the fixing plate (15); a display (19) is fixedly connected to the middle of the rear end face of the fixing plate (15); and a pull-out gap adjustment mechanism is arranged on the detection plate (8) to prevent a plurality of leaves from entering between the scanning head (17) and the detection plate (8); The pull-out gap adjustment mechanism comprises a baffle (10) slidably connected to the left and right sides of the front end surface of the detection plate (8); a scissor-type telescopic mechanism (11) is provided on the front end surface of the baffle (10); a displacement plate (21) is provided on the front side of the scissor-type telescopic mechanism (11); an L-shaped rod (24) is slidably connected to the middle of the front end surface of the displacement plate (21) via a slide rail (27); and a clamping plate (22) is slidably connected to one side of the L-shaped rod (24); A rotating block (29) is fixedly connected to the middle of the lower end surface of the detection plate (8); a mounting seat (28) is rotatably provided at the lower end of the rotating block (29); a fixed disk (6) is fixedly connected to the lower end of the mounting seat (28); a lug rod (5) is fixedly connected to the middle of the lower end surface of the fixed disk (6); the lug rod (5) is slidably connected to a sleeve (1) via a keyway; and a mounting plate (2) is fixedly connected to the lower end of the sleeve (1).

2. The device for measuring the leaf width of Ulmus pumila leaves according to claim 1, characterized in that: A second threaded rod (25) is rotatably provided in the middle of the upper end surface of the mounting plate (2), and the second threaded rod (25) is threadedly connected to the bump rod (5). A motor (4) is fixedly connected to the middle of one side of the mounting plate (2), and the output end of the motor (4) is fixedly connected to the lower end of the second threaded rod (25).

3. The device for measuring the leaf width of Ulmus pumila leaves according to claim 1, characterized in that: The right end of the lifting plate (12) is threadedly connected to a threaded rod (18), and the upper and lower ends of the threaded rod (18) are rotatably arranged on the slide plate (30). The upper end surface of the slide plate (30) is fixedly connected to a motor (16), and the output end of the motor (16) is fixedly connected to the upper end of the threaded rod (18).

4. The device for measuring the leaf width of an elm tree according to claim 1, characterized in that: A spring 1 (14) is sleeved on the lower end of the slide column (13); the lower end of the spring 1 (14) is fixedly connected to the upper end surface of the fixing plate (15); and the upper end of the spring 1 (14) is fixedly connected to the lower end surface of the lifting plate (12).

5. The device for measuring the leaf width of Ulmus pumila leaves according to claim 1, characterized in that: One end of the baffle (10) is threadedly connected to a bidirectional threaded rod (9), both ends of the bidirectional threaded rod (9) are rotatably arranged on the detection plate (8), and a motor four (20) is fixedly connected to the front side of the right end of the detection plate (8), and the output end of the motor four (20) is fixedly connected to the right end of the bidirectional threaded rod (9).

6. The device for measuring the leaf width of Ulmus pumila leaves according to claim 1, characterized in that: One end of the rear side of the L-shaped rod (24) is threadedly connected to the second threaded rod (25), both ends of the second threaded rod (25) are rotatably arranged on the displacement plate (21), and a motor (26) is fixedly connected to the middle part of one side of the front end surface of the displacement plate (21), and the output end of the motor (26) is fixedly connected to one end of the second threaded rod (25).

7. The device for measuring the leaf width of Ulmus pumila leaves according to claim 1, characterized in that: One end of the clamping plate (22) is fixedly connected to a second spring (23), and the other end of the second spring (23) is fixedly connected to an L-shaped rod (24).

8. The device for measuring leaf width of Ulmus pumila leaves according to claim 1, characterized in that: A handle (3) is fixedly connected to the middle portion of the lower end surface of the mounting plate (2).

9. The device for measuring the leaf width of Ulmus pumila leaves according to claim 1, characterized in that: A control panel (31) is provided on the front end surface of the mounting plate (2).

10. The device for measuring the leaf width of Ulmus pumila leaves according to claim 1, characterized in that: The upper side of the front end surface of the mounting seat (28) is fixedly connected to the second motor (7), and the output end of the second motor (7) is fixedly connected to the rotating block (29).

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