Portable device for measuring agronomic characters of tobacco plants

Abstract

The utility model belongs to the technical field of tobacco field management, and particularly relates to a portable device for measuring agronomic characters of tobacco plants, which comprises a plurality of casing pipes which are coaxially sleeved in sequence, windows which are equal in width and axially extend to the end parts are arranged on casing pipe bodies, and a support block is arranged in the end part of the casing pipe at the bottom end with the smallest outer diameter; a fixing rod perpendicular to the window is fixedly arranged on the inner wall of the end of the top end sleeve with the largest outer diameter, a flexible rule is wound around the fixing rod, the length measuring side face of the flexible rule corresponds to the window, and the measuring initial end of the flexible rule is fixedly connected with the supporting block. The device is simple in structure, can be converted between a contraction state and an extension state, and achieves the functions of contraction portability and extension measurement stability.

Description

Technical Field

[0001] This utility model belongs to the field of tobacco field management technology, and in particular relates to a portable device for measuring the agronomic traits of tobacco plants. Background Technology

[0002] As a leaf crop, flue-cured tobacco is crucial for field agronomic trait measurement. This is not only for controlling growth, development, and yield, but also directly impacts leaf quality, disease resistance, and market competitiveness, making it an indispensable indicator in tobacco production and research. Key field agronomic trait measurement indicators for flue-cured tobacco include plant height, maximum leaf length, maximum leaf width, and stem circumference. Currently, these indicators are measured in the field using measuring tapes or flexible measuring instruments. However, this method is cumbersome due to the influence of tobacco leaves and tools, requiring multiple opening and closing of the tape measure, resulting in low efficiency. Furthermore, traditional tools suffer from significant measurement errors. Therefore, a portable field agronomic trait measurement device that is fast, convenient, and practical is needed to ensure efficient and accurate agronomic trait measurement. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this invention is to provide a portable device for measuring the agronomic traits of tobacco plants. This invention has a simple structure and can switch between two forms: shrinkage and extension, achieving both portable shrinkage and stable measurement when extended.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A portable device for measuring the agronomic traits of tobacco plants includes several sleeves that are coaxially connected in sequence. Each sleeve has a window of equal width that extends axially to its end. The bottom sleeve with the smallest outer diameter has a support block inside its end. The top sleeve with the largest outer diameter has a fixing rod fixed to its inner wall at its end, which is perpendicular to the window. A flexible measuring tape is coiled on the fixing rod. The measuring tape's length measurement side corresponds to the window, and its initial measurement end is fixedly connected to the support block.

[0006] Preferably, the top sleeve is further provided with a guide rod that is parallel to the fixed rod near the window; the initial measuring end of the measuring tape passes around the guide rod and is connected to the support block;

[0007] The measuring tape is coiled on the sleeve, and the measuring end of the measuring tape is fixedly connected to the outer wall of the sleeve. The sleeve is sleeved on the fixed rod, and the outer wall of the fixed rod is connected to the inner wall of the sleeve through a preset spiral spring.

[0008] Preferably, the bottom sleeve slides with a radially extending limiting rod through a preset through hole, and the limiting rod exposed to the outside is provided with a limiting plate, and one end located inside the bottom sleeve is vertically connected to the support block;

[0009] The width of the support block is not greater than the width of the window.

[0010] Preferably, the limiting rod is provided with a reset plate on the rod body located inside the bottom sleeve, and the reset plate is connected to the inner wall of the bottom sleeve through a reset spring.

[0011] Preferably, the inner wall of one end of the sleeve facing the bottom end has an inner flange made of magnet, and the other end has an outer flange made of iron, wherein the outer flange and the inner flange have the same outer diameter. The magnet can be made of neodymium magnet material, and the sleeve body can be made of lightweight thin-walled plastic material.

[0012] Preferably, the outer wall of the top sleeve below the fixing rod is provided with an annular boss, and a flexible measuring ruler made of flexible material is provided on the boss.

[0013] The working process of this utility model is as follows:

[0014] In the non-use state, the sleeves are interlocked, with only the top sleeve, which has the largest outer diameter, exposed to the outside. Simultaneously, the spiral spring maintains constant tension on the sleeves, causing the flexible measuring tape on the sleeves to tighten the support block. This ensures the stability of the sleeve connection without external interference, making it easy to carry. Furthermore, in this state, the support block and limit rod are pulled into the bottom sleeve by the return spring, so the flexible measuring tape is effectively protected as it remains inside the sleeve.

[0015] When the tubes are moved to the tobacco plant to be tested, they are pulled out one by one. The inner flange of the tube is made of magnet and the outer iron flange of the adjacent tube is attracted to each other, thus maintaining the stability of the tube structure after extension. During this process, the flexible measuring tape is continuously extended.

[0016] When measuring plant height, insert the bottom sleeve with the smallest outer diameter into the ground, ensuring the limiting rod is in contact with the ground and the measuring tape on the fixing rod is rolled higher than the tobacco plant. Then, push the limiting rod with your foot so that the limiting plate of the limiting rod contacts the outer wall of the bottom sleeve. At this moment, the support block moves out from the window of the bottom sleeve to the outside, while keeping the measuring tape taut and perpendicular to the ground. This prevents the measuring tape from tilting due to the wall thickness gradient of the sleeve, which could cause the measurement data to be too large. The initial measurement end of the measuring tape is at the support block, i.e., the 0 mark is on the ground. The staff can calculate the plant height data by corresponding to the scale value on the measuring tape at the height of the tobacco plant.

[0017] The stem circumference can be measured by wrapping the stem with a leaf measuring tape, and the length and width of the leaves can also be measured by stretching the leaf measuring tape.

[0018] Compared with the prior art, the present invention has the following advantages: the present invention has a simple structure and can be converted between two forms, shrinkage and extension. The shrinkage state takes up little space and is easy to carry, while the extension state is stable and can quickly measure data such as plant height. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the portable device described in Example 1 in its extended state;

[0020] Figure 2 for Figure 1 A schematic diagram of the split structure of the sleeve shown;

[0021] Figure 3 This is a schematic diagram of the internal structure of the top sleeve described in Example 2. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Example 1

[0023] like Figures 1-2 As shown, a portable device for measuring the agronomic traits of tobacco plants includes several sleeves 1 that are coaxially connected in sequence. Each sleeve 1 has a window 11 of equal width that extends axially to its end.

[0024] The bottom sleeve 12 with the smallest outer diameter has a support block 3 inside its end. The width of the support block 3 is not greater than the width of the window 11. The bottom sleeve 12 slides with a radially extending limiting rod 4 through a preset through hole. The rod body of the limiting rod 4 exposed to the outside is provided with a limiting plate 42. One end of the limiting rod 4 located inside the bottom sleeve is vertically connected to the support block 3. The rod body of the limiting rod 4 located inside the bottom sleeve is provided with a reset plate 41. The reset plate 41 is connected to the inner wall of the bottom sleeve 12 through a reset spring 43.

[0025] The top sleeve 13 with the largest outer diameter has a fixing rod 5 fixed on the inner wall of its end, which is perpendicular to the window. The top sleeve 13 also has a guide rod 52 that is parallel to the fixing rod 5 near the window 11.

[0026] A flexible measuring tape 51 for measuring length is coiled around a sleeve (not shown in the figure because it is covered by the flexible measuring tape 51), and the measuring end of the flexible measuring tape 51 is fixedly connected to the outer wall of the sleeve. The sleeve is fitted onto a fixed rod, and the outer wall of the fixed rod is connected to the inner wall of the sleeve through a preset spiral spring. The length measuring side of the flexible measuring tape 51 corresponds to the window, and the initial measuring end of the flexible measuring tape passes around the guide rod 52 and is connected to the support block 3.

[0027] The inner wall of one end of the sleeve facing the bottom end sleeve 12 is provided with an inner flange 15 made of magnets, and the other end is provided with an outer flange 14 made of iron. The outer flange 14 and the inner flange 15 have the same outer diameter.

[0028] The working process of this utility model is as follows:

[0029] In the non-use state, the sleeves 1 are interlocked, with only the top sleeve 13, which has the largest outer diameter, exposed to the outside. At the same time, the spiral spring keeps the sleeve under constant tension, which in turn causes the flexible ruler 51 on the sleeve to tighten the support block 3, ensuring the stability of the sleeve 1 in the interlocking state without external interference, making it easy to carry. Moreover, in this state, the support block 3 and the limiting rod 4 are pulled into the bottom sleeve 12 by the return spring 43, so the flexible ruler 51 is located inside the sleeve and can be effectively protected.

[0030] When the tube is moved to the tobacco plant to be tested, the sleeve 1 is pulled out sequentially. The inner flange 15 made of magnet is attracted to the iron outer flange 15 of the adjacent sleeve, thereby maintaining the stability of the tube structure after extension. During this process, the flexible ruler 51 continuously overcomes the elastic force of the spiral spring and extends.

[0031] When measuring plant height, the bottom sleeve 12 with the smallest outer diameter is inserted into the ground, ensuring that the limiting rod 4 is in contact with the ground and the flexible measuring tape 51 on the fixing rod is rolled higher than the tobacco plant. Then, the limiting rod 4 is pushed with the foot, causing the limiting plate 42 of the limiting rod 4 to contact the outer wall of the bottom sleeve 12. At this moment, the support block 3 moves out from the window of the bottom sleeve 12 to the outside, while keeping the flexible measuring tape 51 in a taut state and perpendicular to the ground. This avoids the flexible measuring tape tilting due to the wall thickness gradient difference of the sleeve, which would cause the measurement data to be too large. The initial measuring end of the flexible measuring tape 51 is at the support block 3, i.e., the 0 mark is on the ground. The staff can calculate the plant height data according to the scale value on the flexible measuring tape corresponding to the height of the tobacco plant. Example 2

[0032] like Figures 1-3 As shown, the difference between this embodiment and embodiment 1 is that the outer wall of the top sleeve 13 below the fixing rod is also provided with an annular boss 16, and the boss 16 is provided with a flexible measuring ruler 17 made of flexible material coiled around the outer wall of the sleeve.

[0033] The stem circumference can be measured by wrapping the leaf measuring tape 17 around the stem, and the length and width of the leaves can also be measured by stretching the leaf measuring tape. The leaf measuring tape 17 and the measuring tape 51 are made of the same material.

Claims

1. A portable device for measuring agronomic traits of tobacco plants, the device comprising a plurality of sleeves coaxially connected in sequence, characterized in that, The sleeve body has windows of equal width that extend axially to the ends. The bottom sleeve with the smallest outer diameter has a support block inside its end. The top sleeve with the largest outer diameter has a fixing rod fixed to its inner wall at the end, which is perpendicular to the window. A flexible measuring tape is coiled on the fixing rod. The measuring tape's length measuring side corresponds to the window, and its initial measuring end is fixedly connected to the support block.

2. The portable device for measuring agronomic traits of tobacco plants as described in claim 1, characterized in that, The top sleeve is also provided with a guide rod that is parallel to the fixed rod near the window; the initial measuring end of the measuring tape passes around the guide rod and is connected to the support block; The measuring tape is coiled on the sleeve, and the measuring end of the measuring tape is fixedly connected to the outer wall of the sleeve. The sleeve is sleeved on the fixed rod, and the outer wall of the fixed rod is connected to the inner wall of the sleeve through a preset spiral spring.

3. The portable device for measuring agronomic traits of tobacco plants as described in claim 1, characterized in that, The bottom sleeve slides with a radially extending limiting rod through a preset through hole. The limiting rod exposed to the outside is provided with a limiting plate, and one end located inside the bottom sleeve is vertically connected to the support block. The width of the support block is not greater than the width of the window.

4. The portable device for measuring agronomic traits of tobacco plants as described in claim 3, characterized in that, The limiting rod is equipped with a reset plate on its body inside the bottom sleeve. The reset plate is connected to the inner wall of the bottom sleeve through a reset spring.

5. The portable device for measuring agronomic traits of tobacco plants as described in claim 1, characterized in that, The sleeve has an inner flange made of magnet on one end of the inner wall facing the bottom end of the sleeve, and an outer flange made of iron on the other end. The outer flange and the inner flange have the same outer diameter.

6. The portable device for measuring agronomic traits of tobacco plants as described in claim 1, characterized in that, The outer wall of the top sleeve below the fixing rod is also provided with an annular boss, and a flexible measuring ruler made of flexible material is coiled on the boss and set on the outer wall of the sleeve.

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