In-situ sugarcane lodging resistance testing device

Abstract

The invention discloses an in-situ sugarcane lodging resistance testing device, and relates to the technical field of lodging resistance testing, the in-situ sugarcane lodging resistance testing device comprises a bendable testing rod, and the testing rod is cooperatively provided with a testing box; a circuit board and an anti-bending test assembly are arranged in the test box; when a lodging-resistant test is carried out on the sugarcane, firstly, the bridle is wound on a sugarcane stalk to be tested, and the bridle is tightly attached to the surface of the sugarcane by utilizing the bonding effect of the magic tape, so that the bridle is prevented from loosening or slipping off in the test process; then, as the tension sensor and the bridle are connected through the connecting slot and the pressing block, when the sugarcane is bent or inclined under the action of external force, the generated tension can be transmitted to the tension sensor through the bridle; the tension sensor converts a received tension signal into an electric signal and transmits the electric signal to a circuit board in the test box. The circuit board processes and analyzes the received electric signals, and then current lodging resistance data of the sugarcane are obtained.

Description

Technical Field

[0001] This invention relates specifically to the field of lodging resistance testing technology, and more specifically to an in-situ sugarcane lodging resistance testing device. Background Technology

[0002] Testing sugarcane's resistance to lodging is essentially a key step in ensuring yield, reducing losses, optimizing varieties, and improving field management. As a tall crop (usually 2-4 meters tall), sugarcane has juicy stalks, a high center of gravity, and a long growing cycle (10-12 months), making it susceptible to lodging due to wind, rain, and soil conditions, which directly threatens planting profits and industry stability.

[0003] The center of gravity of a sugarcane plant is located at about two-thirds of its height, making it most susceptible to lodging. Traditional sugarcane lodging resistance tests involve marking the area near the center of gravity, connecting a portable dynamometer to the point of application via a flexible rope, and fixing the other end of the dynamometer to a tripod. The dynamometer is then pulled slowly and evenly while observing the plant's condition. When the plant begins to tilt (angle ≥15°) or the roots become loose (soil cracking, roots exposed), the force is stopped, and the tension value is recorded.

[0004] The existing testing equipment is very inconvenient to use, making it impossible to conduct portable tests in large sugarcane planting areas, and it is also impossible to conduct bending resistance tests on sugarcane. Summary of the Invention

[0005] The purpose of this invention is to provide an in-situ sugarcane lodging resistance testing device that simplifies the equipment structure, is portable, and facilitates testing in sugarcane fields with large planting areas. It can also test the sugarcane's resistance to bending. This solves the technical problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An in-situ sugarcane lodging resistance testing device includes a bendable test rod with a test box mounted on it. The test box contains a circuit board and a bending resistance testing assembly. A fixing frame is fixedly installed inside the test box, and a tensile sensor is secured to the upper end of the fixing frame with a nut. The other end of the tensile sensor extends from a rectangular hole on the outside of the test box and is threaded into a connecting slot. A strap is secured to the connecting slot by a pressure block, and the middle of the pressure block is further secured to the connecting slot by a countersunk bolt.

[0008] One end of the strap is fitted with a ring buckle, and the other end of the strap passes through the ring buckle and is then fixed to itself by Velcro.

[0009] The bending resistance test assembly includes a flexible chain with a C-shaped fastener riveted to its outer end; a pressure sensor is threadedly connected to the outer side of the C-shaped fastener; and a test pressure base is threadedly connected to the outer side of the pressure sensor.

[0010] As a further technical solution of the present invention, the flexible chain includes several chain links, and a fastener is provided between every two chain links. The two ends of the fastener are respectively movably connected to the two chain links through a rotating shaft.

[0011] As a further technical solution of the present invention, there are two flexible chains, and the fasteners on the two flexible chains are fastened to each other; one end of the two flexible chains is housed inside the back cover and the transparent front cover.

[0012] As a further technical solution of the present invention, the back cover and the transparent front cover are interlocked and locked at the four corners by screws; a slot is provided on the top of the back cover and the transparent front cover to facilitate the extension of the flexible chain;

[0013] The transparent front cover has an integral serpentine guide plate on its inner side; the serpentine guide plate is arranged in a coiled shape and forms a cavity that can accommodate the flexible chain.

[0014] As a further technical solution of the present invention, after the two flexible chains are interlocked, one side of one flexible chain is attached to the guide frame, which is fixed to the rear cover by screws; the other flexible chain is meshed with a sprocket on its outer side; the sprocket is coaxially fitted with a driven gear; the driven gear is meshed with a drive gear that is fitted on the output shaft of the drive motor.

[0015] As a further technical solution of the present invention, the test box is also connected to a controller by screws on the side where the circuit board is installed, and the controller is electrically connected to the circuit board; the other side of the test box has two symmetrically arranged storage slots.

[0016] As a further technical solution of the present invention, the storage slot is provided with a flipping arm, one end of which is close to the test pressure seat and is movably connected to the storage slot through a rotating shaft; the other end of the flipping arm is provided with a ball head knot, and the ball head knot is also installed in the fixing block.

[0017] As a further technical solution of the present invention, the test rod includes a detachable slide rod, the lower end of which is inserted into the connecting cylinder and locked in place by a countersunk bolt; the lower end of the connecting cylinder is inserted into the top of the insertion rod and is movably connected by a rotating shaft.

[0018] As a further technical solution of the present invention, the lower end of the cutting rod is tapered; a rectangular groove is provided at the upper end of the cutting rod, a foot pedal is movably connected in the rectangular groove via a pivot, and an ejector is movably connected on the other side of the rectangular groove via a pivot.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. In this invention, when conducting lodging resistance tests on sugarcane, a strap is first wrapped around the sugarcane stalk to be tested. The Velcro fasteners ensure the strap adheres tightly to the sugarcane surface, preventing it from loosening or slipping during the test. Next, since the tension sensor is connected to the strap via a slot and a pressure block, when the sugarcane is subjected to external force and bends or tilts, the resulting tension is transmitted to the tension sensor through the strap. The tension sensor converts the received tension signal into an electrical signal and transmits it to a circuit board inside the test chamber. The circuit board processes and analyzes the received electrical signal to determine the current lodging resistance data of the sugarcane.

[0021] 2. The present invention enables in-situ testing without removing the sugarcane from its original growing environment, greatly improving the efficiency and accuracy of the test and providing reliable data support for sugarcane planting and cultivation.

[0022] 3. In this invention, as the drive motor rotates continuously, the flexible chain pushes outwards, gradually increasing the pressure applied to the sugarcane by the test pressure seat. A pressure sensor monitors the pressure on the test pressure seat in real time and converts the pressure signal into an electrical signal, which is then transmitted to the circuit board. The circuit board processes and analyzes the received pressure signal to obtain the sugarcane's current bending resistance data. This method allows for accurate assessment of the sugarcane's bending resistance under external forces, providing important reference for sugarcane variety selection and cultivation.

[0023] 4. In this invention, the serpentine guide plate provides stable guidance, ensuring the flexible chain moves along a predetermined trajectory and avoiding jamming or deviation. This guarantees that the test pressure seat accurately adheres to the sugarcane, applying uniform pressure and improving the accuracy and reliability of the test. Simultaneously, this design makes the entire bending strength testing assembly more compact, facilitating installation and maintenance, and reducing the manufacturing and operating costs of the device. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0025] Figure 2 In this invention Figure 1 The left view.

[0026] Figure 3 In this invention Figure 2 AA sectional view.

[0027] Figure 4 This is a schematic diagram of the internal structure of the present invention.

[0028] Figure 5 In this invention Figure 5 Another perspective illustration.

[0029] Figure 6 This is a schematic diagram of the flexural strength test state of the present invention.

[0030] Figure 7 This is a schematic diagram of the flexural strength testing component in this invention.

[0031] Figure 8 This is a schematic diagram of the planar structure of the flexural strength test component of the present invention.

[0032] Figure 9 In this invention Figure 8 A schematic diagram of the internal structure.

[0033] Figure 10 In this invention Figure 4 Enlarged illustration of point B.

[0034] Figure 11 In this invention Figure 5 Enlarged diagram of point C.

[0035] Figure 12 In this invention Figure 6 Enlarged diagram of point D.

[0036] Figure 13 In this invention Figure 8 Enlarged diagram of point E.

[0037] Figure 14 In this invention Figure 9 Enlarged schematic diagram at point F.

[0038] In the diagram: 1-Test box, 2-Controller, 3-Circuit board, 4-Flexural strength test assembly, 5-Fixing frame, 6-Tension sensor, 7-Connecting slot, 8-Pressure block, 9-Strap, 10-Ring buckle, 11-Storage slot, 12-Flipping arm, 13-Fixing block, 14-Detachable slide bar, 15-Connecting cylinder, 16-Insertion rod, 17-Ejector, 18-Foot pedal;

[0039] 41-Rear cover, 42-Transparent front cover, 43-Serpentine guide plate, 44-Flexible chain, 45-Guide frame, 46-Sprocket, 47-Driven gear, 48-Driving gear, 49-Drive motor, 410-C-type fastener, 411-Pressure sensor, 412-Test pressure base;

[0040] 441 - Link, 442 - Fastener. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figure 1-14 In this embodiment of the invention, an in-situ sugarcane lodging resistance testing device includes a bendable test rod, on which a test box 1 is mounted. The test box 1 contains a circuit board 3 and a bending resistance testing component 4. A fixing frame 5 is fixedly installed inside the test box 1. A tension sensor 6 is locked to the upper end of the fixing frame 5 with a nut. The other end of the tension sensor 6 extends from a rectangular hole on the outside of the test box 1 and is threadedly connected to a connecting slot 7. A strap 9 is secured to the connecting slot 7 by a pressure block 8. The middle position of the pressure block 8 is also locked to the connecting slot 7 by a countersunk bolt. The test box 1 also contains a battery, which is electrically connected to the circuit board 3. Furthermore, a tilt sensor can be installed on the fixing frame 5.

[0043] One end of the strap 9 is fitted with a ring buckle 10, and the other end of the strap 9 passes through the ring buckle 10 and is then fixed to itself by Velcro.

[0044] By adopting the above technical solution, when conducting lodging resistance tests on sugarcane, the strap 9 is first wrapped around the sugarcane stalk to be tested. The Velcro fasteners ensure the strap 9 adheres tightly to the sugarcane surface, preventing it from loosening or slipping during the test. Next, since the tension sensor 6 is connected to the strap 9 via the connecting slot 7 and the pressure block 8, when the sugarcane is subjected to external force and bends or tilts, the resulting tension is transmitted to the tension sensor 6 through the strap 9. The tension sensor 6 converts the received tension signal into an electrical signal and transmits it to the circuit board 3 inside the test box 1. The circuit board 3 processes and analyzes the received electrical signal to obtain the current lodging resistance data of the sugarcane. Simultaneously, an tilt sensor is installed on the fixing frame 5. The tilt sensor can monitor the tilt angle of the sugarcane in real time and transmit the angle data to the circuit board 3 as well, for a more comprehensive and accurate evaluation of the sugarcane's lodging resistance performance.

[0045] The entire testing process does not require removing the sugarcane from its original growing environment, enabling in-situ testing, which greatly improves the efficiency and accuracy of the test and provides reliable data support for sugarcane planting and cultivation.

[0046] Please see the appendix Figure 1-6The test rod includes a detachable slide bar 14, the lower end of which is inserted into the connecting tube 15 and locked in place by a countersunk bolt; the lower end of the connecting tube 15 is inserted into the top of the insertion rod 16 and is movably connected by a rotating shaft.

[0047] More specifically, the lower end of the insertion rod 16 is tapered; a rectangular groove is provided at the upper end of the insertion rod 16, and a foot pedal 18 is movably connected in the rectangular groove via a pivot; and an ejector 17 is movably connected on the other side of the rectangular groove via a pivot.

[0048] It should be noted that the lower outer side of the foot pedal 18 has a rectangular notch. When the foot pedal 18 changes from a vertical state to a horizontal state, the rectangular notch will engage with the insertion rod 16, thereby facilitating the insertion of the foot pedal 18.

[0049] By adopting the above technical solution, when using it, the ejector 17 is first pushed upward from the bottom, causing the ejector 17 to flip, thereby pushing the foot pedal 18 out of the rectangular groove. Then, the worker inserts the cutting rod 16 into the ground and steps on the foot pedal 18 to make the cutting rod 16 deeply inserted into the soil and fixed. After the strap 9 is tied to the sugarcane, the detachable slide bar 14 is held and bent away from the side away from the sugarcane, causing the connecting tube 15 and the cutting rod 16 to flip relative to each other, thereby facilitating the lodging resistance test of the sugarcane.

[0050] Please see the appendix Figure 7-9 and Figure 13-14 The bending resistance test assembly 4 includes a flexible chain 44, with a C-type fastener 410 riveted to the outer end of the flexible chain 44; a pressure sensor 411 is threaded to the outer side of the C-type fastener 410; and a test pressure seat 412 is threaded to the outer side of the pressure sensor 411.

[0051] The flexible chain 44 includes several chain links 441, and a fastener 442 is provided between every two chain links 441. The two ends of the fastener 442 are respectively movably connected to the two chain links 441 through a rotating shaft.

[0052] More specifically, after the two flexible chains 44 are interlocked, one side of one flexible chain 44 is attached to the guide frame 45, which is fixed to the rear cover 41 by screws; the other flexible chain 44 is meshed with a sprocket 46 on its outer side; the sprocket 46 is coaxially fitted with a driven gear 47; the driven gear 47 meshes with a driving gear 48 mounted on the output shaft of the drive motor 49. The drive shaft for mounting the sprocket 46 and gear 47 is fixedly connected to the rear cover 41 via a bearing seat; the drive motor 49 is fixedly connected to the rear cover 41 via a motor bracket or mounting base; at the same time, the drive motor 49 is electrically connected to the controller 2 and the circuit board 3 via wires.

[0053] By adopting the above technical solution, when conducting the bending resistance test on sugarcane, firstly, two fixing blocks 13 are fastened to the sugarcane body. Then, the controller 2 controls the start of the drive motor 49, which drives the drive gear 48 to rotate. The drive gear 48 meshes with the driven gear 47, thereby driving the sprocket 46 to rotate. The rotation of the sprocket 46 causes the flexible chain 44 connected to it to start moving. Since the two flexible chains 44 are interlocked, under the movement of one flexible chain 44, the other remains relatively stable under the guidance of the flexible chain 44 guide frame 45, and they are interlocked and pushed outwards, so that the test pressure seat 412 is in contact with the sugarcane.

[0054] As the drive motor 49 rotates continuously, the flexible chain 44 pushes outwards, gradually increasing the pressure applied to the sugarcane by the test pressure seat 412. The pressure sensor 411 monitors the pressure on the test pressure seat 412 in real time and converts the pressure signal into an electrical signal, which is then transmitted to the circuit board 3. The circuit board 3 processes and analyzes the received pressure electrical signal to obtain the current bending resistance data of the sugarcane. In this way, the bending resistance of sugarcane under external force can be accurately assessed, providing important reference for the selection and cultivation of sugarcane varieties.

[0055] Moreover, the entire flexural strength test is conducted in the original sugarcane growing environment, eliminating the need to move the sugarcane, making the operation simple and the test results reliable. Additionally, the device's test rod is bendable, facilitating testing in sugarcane fields with varying terrain and planting densities, further enhancing the device's applicability and practicality.

[0056] It should be noted that the two fixing blocks 13 and the test pressure seat 412 are for the classic three-point bending test, with the two fixing blocks 13 at 20-30cm.

[0057] During testing, a lateral force is slowly applied using a pressure sensor, and the pressure value (F) and bending displacement (s) are recorded simultaneously to plot a "force / displacement curve". When the displacement reaches 1-2 times the stem diameter, the force is stopped and the load is unloaded. The "bending stiffness (EI)" is calculated by the slope of the curve, and the "elastic modulus (E)" is calculated by combining the stem cross-sectional dimensions (diameter, wall thickness).

[0058] This rapid field screening method avoids damaging the plants, allows for comparison of varietal toughness, and determines whether the stems are "brittle" or "tough".

[0059] This invention can quickly acquire data without damaging the plants, making it suitable for large-scale sample comparisons.

[0060] Please see the appendix Figure 14In this embodiment, there are two flexible chains 44, and the fasteners 442 on the two flexible chains 44 are fastened to each other; one end of the two flexible chains 44 is housed inside the rear cover 41 and the transparent front cover 42.

[0061] More specifically, the rear cover 41 and the transparent front cover 42 are interlocked and locked in place by screws at the four corners; slots are provided on the top of the rear cover 41 and the transparent front cover 42 to facilitate the extension of the flexible chain 44; a serpentine guide plate 43 is integrally provided on the inner side of the transparent front cover 42.

[0062] By adopting the above technical solution, the serpentine guide plate 43 is arranged in a coiled shape and forms a cavity that can accommodate the flexible chain 44, so that the flexible chain 44 is in the cavity, which not only has a small footprint, but also makes it easy to extend and retract.

[0063] When the flexible chain 44 extends and retracts under the action of the drive motor 49, the serpentine guide plate 43 provides stable guidance, ensuring that the flexible chain 44 moves along a predetermined trajectory and avoiding jamming or deviation. This ensures that the test pressure seat 412 can accurately fit against the sugarcane, applying uniform pressure and improving the accuracy and reliability of the test. At the same time, this design also makes the entire bending resistance test assembly 4 more compact, facilitating installation and maintenance, and reducing the manufacturing and operating costs of the device.

[0064] Please see the appendix Figure 4 and Figure 6 In this embodiment, the test box 1 is also connected to the controller 2 by screws on the side where the circuit board 3 is installed, so the controller 2 is electrically connected to the circuit board 3; the other side of the test box 1 has two symmetrically arranged storage slots 11.

[0065] More specifically, the storage slot 11 is provided with a flipping arm 12. One end of the flipping arm 12 near the test pressure seat 412 is movably connected to the storage slot 11 via a rotating shaft. The other end of the flipping arm 12 is provided with a ball head knot, which is also installed in the fixing block 13.

[0066] By adopting the above technical solution, the flip arm 12 can be stored in the storage slot 11 when not in use, which simplifies the structure of the device and achieves the portability of the device.

[0067] Because the fixed block 13 and the flipping arm 12 are connected by a ball joint, they can rotate freely, allowing for better twisting and adjustment in both the storage and testing states, thus improving the flexibility and accuracy of the test. During testing, the flipping arm 12 is rotated out of the storage slot 11, and the angle of the fixed block 13 is flexibly adjusted according to the position and growth direction of the sugarcane, so that the two fixed blocks 13 can accurately engage with the appropriate position on the sugarcane body, ensuring the accuracy and effectiveness of the three-point bending test. This design fully considers the complexity and diversity of actual testing scenarios, enabling the device to adapt to sugarcane in different growth states, further improving the practicality and reliability of the device.

[0068] Furthermore, the design of the storage slot 11 also protects the tilting arm 12. When the device is not in use or during transportation, the tilting arm 12 is stored in the storage slot 11, avoiding damage caused by external forces such as collisions and scratches, extending the service life of the tilting arm 12, and reducing the maintenance cost of the device. At the same time, this compact design also makes the entire testing device smaller in size, easier to carry and store, and facilitates mobile testing by staff in different sugarcane planting areas, improving the efficiency of testing work.

[0069] Furthermore, the ball-head knot design not only allows the fixed block 13 to rotate freely but also provides a certain degree of cushioning. During testing, when the sugarcane experiences slight swaying due to external forces, the ball-head knot allows the fixed block 13 to self-adjust within a certain range, reducing stress concentration caused by rigid connections, preventing additional damage to the sugarcane from the fixed block 13, ensuring the integrity of the sugarcane during testing, and making the test results more realistic and reliable, more accurately reflecting the lodging and bending resistance of sugarcane in actual growing environments.

[0070] The working principle of this invention is as follows: In use, the ejector 17 is first pushed upwards from the bottom, causing it to flip and eject the foot pedal 18 from the rectangular groove. Then, the worker inserts the cutting rod 16 into the ground and steps on the foot pedal 18, causing the cutting rod 16 to be deeply embedded in the soil and fixed. After binding the strap 9 to the sugarcane, the detachable sliding rod 14 is held and pulled away from the sugarcane, causing the connecting cylinder 15 and the cutting rod 16 to flip relative to each other. Since the tension sensor 6 is connected to the strap 9 through the connecting slot 7 and the pressure block 8, when the sugarcane is subjected to external force and bends or tilts, the resulting tension is transmitted to the tension sensor 6 through the strap 9. The tension sensor 6 converts the received tension signal into an electrical signal and transmits it to the circuit board 3 inside the test box 1. The circuit board 3 processes and analyzes the received electrical signal to obtain the current lodging resistance data of the sugarcane. Meanwhile, an inclination sensor is installed on the fixing frame 5. The inclination sensor can monitor the tilt angle of the sugarcane in real time and transmit the angle data to the circuit board 3 to more comprehensively and accurately evaluate the lodging resistance of the sugarcane.

[0071] When conducting a bending resistance test on sugarcane, two fixing blocks 13 are first fastened to the sugarcane body. Then, the controller 2 controls the start of the drive motor 49, which drives the drive gear 48 to rotate. The drive gear 48 meshes with the driven gear 47, thereby driving the sprocket 46 to rotate. The rotation of the sprocket 46 causes the flexible chain 44 connected to it to start moving. Since the two flexible chains 44 are interlocked, the movement of one flexible chain 44 keeps the other relatively stable under the guidance of the flexible chain 44 guide frame 45, and they are interlocked and pushed outward, so that the test pressure seat 412 is in contact with the sugarcane.

[0072] As the drive motor 49 rotates continuously, the flexible chain 44 pushes outwards, gradually increasing the pressure applied to the sugarcane by the test pressure seat 412. The pressure sensor 411 monitors the pressure on the test pressure seat 412 in real time and converts the pressure signal into an electrical signal, which is then transmitted to the circuit board 3. The circuit board 3 processes and analyzes the received pressure electrical signal to obtain the current bending resistance data of the sugarcane. In this way, the bending resistance of sugarcane under external force can be accurately assessed, providing important reference for the selection and cultivation of sugarcane varieties.

[0073] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0074] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An in-situ sugarcane lodging resistance testing device, characterized in that: The test includes a bendable test rod, on which a test box (1) is mounted; the test box (1) contains a circuit board (3) and a bending resistance test component (4); a fixing frame (5) is fixedly installed inside the test box (1), and a tension sensor (6) is locked and fixed at the upper end of the fixing frame (5) by a nut, and the other end of the tension sensor (6) extends out from the rectangular hole on the outside of the test box (1) and is threadedly connected to a connecting slot (7); a strap (9) is fastened in the connecting slot (7) by a pressure block (8), and the middle position of the pressure block (8) is also locked and fixed to the connecting slot (7) by a countersunk bolt; One end of the strap (9) is fitted with a ring buckle (10), and the other end of the strap (9) passes through the ring buckle (10) and is then fixed to itself by Velcro. The bending resistance test assembly (4) includes a flexible chain (44), and a C-type fastener (410) is riveted to the outer end of the flexible chain (44); a pressure sensor (411) is threaded to the outer side of the C-type fastener (410); and a test pressure seat (412) is threaded to the outer side of the pressure sensor (411).

2. The in-situ sugarcane lodging resistance testing device according to claim 1, characterized in that: The flexible chain (44) includes several chain links (441), and a fastener (442) is provided between every two chain links (441). The two ends of the fastener (442) are respectively connected to the two chain links (441) through a rotating shaft.

3. The in-situ sugarcane lodging resistance testing device according to claim 2, characterized in that: The flexible chain (44) is provided in two parts, and the fasteners (442) on the two flexible chains (44) are fastened to each other; one end of the two flexible chains (44) is housed inside the back cover (41) and the transparent front cover (42).

4. The in-situ sugarcane lodging resistance testing device according to claim 3, characterized in that: The rear cover (41) and the transparent front cover (42) are fastened together and locked at the four corners by screws; slots are provided on the top of the rear cover (41) and the transparent front cover (42) to facilitate the extension of the flexible chain (44); The transparent front cover (42) is integrally provided with a serpentine guide plate (43) on the inner side; the serpentine guide plate (43) is arranged in a coiled shape and forms a cavity that can accommodate the flexible chain (44).

5. The in-situ sugarcane lodging resistance testing device according to claim 4, characterized in that: After the two flexible chains (44) are interlocked, one side of one of the flexible chains (44) is attached to the guide frame (45), which is fixed to the back cover (41) by screws; the other flexible chain (44) is meshed with a sprocket (46) on its outer side; the sprocket (46) is coaxially fitted with a driven gear (47); the driven gear (47) is meshed with a drive gear (48) fitted on the output shaft of the drive motor (49).

6. The in-situ sugarcane lodging resistance testing device according to claim 1, characterized in that: The test box (1) is connected to a controller (2) by screws on the side where the circuit board (3) is installed, and the controller (2) is electrically connected to the circuit board (3); the other side of the test box (1) has two symmetrically arranged storage slots (11).

7. The in-situ sugarcane lodging resistance testing device according to claim 6, characterized in that: The storage slot (11) is provided with a flip arm (12). One end of the flip arm (12) near the test pressure seat (412) is movably connected to the storage slot (11) via a rotating shaft. The other end of the flip arm (12) is provided with a ball head knot, and the ball head knot is also installed in the fixing block (13).

8. The in-situ sugarcane lodging resistance testing device according to claim 1, characterized in that: The test rod includes a detachable slide bar (14), the lower end of which is inserted into the connecting tube (15) and locked in place by a countersunk bolt; the lower end of the connecting tube (15) is inserted into the top of the insertion rod (16) and is movably connected by a rotating shaft.

9. The in-situ sugarcane lodging resistance testing device according to claim 8, characterized in that: The lower end of the cutting rod (16) is tapered; a rectangular groove is provided at the upper end of the cutting rod (16), and a foot pedal (18) is movably connected in the rectangular groove through a rotating shaft. On the other side of the rectangular groove, an ejector (17) is movably connected through a rotating shaft.

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