Field test plot lineation device

Abstract

The utility model belongs to the technical field of crop planting auxiliary equipment, and particularly relates to a field test plot lineation device. The device comprises a rack, a spiral conveying mechanism, a walking mechanism and a hopper, and the spiral conveying mechanism is arranged at the bottom of the rack and provided with a discharging port; the walking mechanism is in transmission connection with a conveying shaft of the spiral conveying mechanism and used for driving the conveying shaft of the spiral conveying mechanism to rotate. The hopper is arranged on the machine frame, and a discharging port of the hopper is connected with a feeding port of the spiral conveying mechanism. The marking device is used for solving the current situation that scientific research test fields lack suitable marking devices, and overcoming the limitations that high-cost navigation equipment is poor in applicability and low in input-output ratio, and commercially available low-cost replacement tools are unsmooth in discharging, discontinuous in marking and the like. The walking mechanism is used for driving the spiral conveying mechanism, synchronous discharging is achieved when the lineation device moves forwards, it is guaranteed that powder is smoothly thrown, and the efficiency, precision and economical efficiency of plot lineation layout in a breeding test are improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary equipment for crop planting, and specifically relates to a field test plot marking device. Background Technology

[0002] In the agricultural production system, crop breeding has always been the core supporting work for promoting variety improvement, enhancing the overall traits of crops, and strengthening the adaptability of the agricultural system. Field trials, as a key link in the breeding process, provide basic data support for the screening and evaluation of new materials. Whether it is the observation and recording of agronomic traits or the measurement of indicators such as yield, disease resistance, and stress resistance, all rely on scientific and standardized plot design and accurate field layout.

[0003] Breeding trial procedures typically require plot design to adhere to fundamental principles such as repeatability, randomization, and representativeness. The effective implementation of these principles often relies on high-precision and high-efficiency field layout (Zhang Tianzhen et al., 2022, *General Introduction to Crop Breeding*, China Agriculture Press). These institutional requirements not only enhance the scientific rigor of experimental design but also set higher standards for the accuracy, consistency, and operational efficiency of field plot delineation.

[0004] However, current methods of plot delineation in breeding experiments still rely heavily on traditional methods such as manual marking with lines. This approach is inefficient, labor-intensive, and susceptible to interference from factors such as terrain variations, soil conditions, and the experience of the operators, resulting in inconsistent marking accuracy and poor repeatability. In actual breeding work, a single field trial often requires the evaluation of hundreds or even thousands of materials, involving numerous trials and a large number of plots, making plot delineation an extremely demanding task. For example, in an experimental field of approximately 30 acres, if plots are laid out manually, it often requires 3 to 5 people working continuously for several hours or even a whole day to complete the task. During this time, marking deviations can gradually accumulate, causing inconsistent plot sizes and disordered row spacing. This not only affects sowing quality but may also interfere with subsequent data collection and statistical analysis, reducing the reliability of the experimental results.

[0005] To improve efficiency, some organizations have tried using commercially available lime-spreading devices for lawn marking. However, these devices are designed for hard grass and are ill-suited to the soft, clod-filled, and uneven ground conditions found in fields. Furthermore, the dispensing port is prone to clumping due to moisture or soil blockage, leading to poor dispensing and intermittent marking, severely impacting the quality of the marking. Other organizations have attempted to use GPS-equipped navigation seeders for precise plot placement, but these devices are expensive and bulky, better suited for large-scale farm operations. For small-scale, highly reproducible trials in breeding units, they lack flexibility and have a low return on investment. Therefore, in practical applications, these methods have significant limitations in terms of applicability and scalability. Most breeding units still have to rely on manual labor, and problems such as low efficiency, large errors, and poor repeatability remain difficult to fundamentally solve. Utility Model Content

[0006] To address the shortcomings of existing technologies, a field experimental plot marking device is provided to solve the current situation where there is a lack of efficient marking devices in scientific research experimental plots. A solution that is both applicable and economical is proposed, which can effectively avoid the problems of poor flexibility and low cost-effectiveness of high-cost navigation equipment, while improving the drawbacks of commercially available low-priced tools such as uneven material discharge and discontinuous marking.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A field test plot marking device, comprising:

[0008] frame;

[0009] A screw conveyor mechanism is located at the bottom of the frame, and the screw conveyor mechanism is provided with a discharge port;

[0010] A traveling mechanism is connected to the conveying shaft of the screw conveyor mechanism, and the traveling mechanism is used to drive the conveying shaft of the screw conveyor mechanism to rotate.

[0011] A hopper is mounted on the frame, and the outlet of the hopper is connected to the inlet of the screw conveyor mechanism.

[0012] Compared with existing technologies, the above technical solutions have the following beneficial effects:

[0013] By utilizing the hoppers and traveling mechanism on the upper and lower parts of the frame, the hoppers can be moved. At the same time, the screw conveyor mechanism works in conjunction with the traveling mechanism. The traveling mechanism drives the screw conveyor mechanism. When the entire marking device moves forward, the screw conveyor mechanism operates, which in turn can throw the powder in the hopper out of the discharge port in real time to complete the forward marking and ensure that the powder in the hopper can be discharged smoothly.

[0014] Based on the above technical solution, the embodiments of this application can be further improved as follows:

[0015] In one embodiment, a handrail is also included, which is disposed on the hopper and extends at an angle toward the rearward direction.

[0016] In one embodiment, the discharge port of the screw conveyor is located on the central axis of the marking device.

[0017] By setting the discharge port of the screw conveyor on the central axis at the bottom, the line drawn by the marking device can always remain in the middle of the path of the marking device as it moves forward, ensuring that the position of the drawn line is controllable.

[0018] In one embodiment, the screw conveyor mechanism includes:

[0019] A conveying pipe is provided at the bottom of the frame. The conveying pipe is hollow inside and closed at both ends, forming a conveying channel along a first direction perpendicular to the forward movement.

[0020] A conveying shaft is rotatably connected to the conveying pipe in a first direction, and the conveying shaft is provided with helical blades.

[0021] In one embodiment, two walking mechanisms are arranged at intervals, and the walking mechanism includes:

[0022] A drive shaft, which is fixed to the bottom of the frame via a bearing housing;

[0023] The wheels are connected to the drive shaft.

[0024] One of the walking mechanisms has a drive shaft coaxially connected to the conveying shaft, which is used to drive the conveying shaft to rotate.

[0025] By connecting the drive shaft in the walking mechanism with the conveying shaft in the screw conveyor mechanism, or sharing a single shaft, the wheels connected to the shaft rotate during walking, which in turn drives the screw blades to rotate. This allows the powder in the hopper to be conveyed while walking, and the powder is discharged from the outlet in real time and scattered on the road surface to form a line. The screw blade discharge method allows the powder to be gradually pushed out.

[0026] In one embodiment, the outlet of the hopper is connected to a flexible connecting sleeve, and the other end of the flexible connecting sleeve is connected to the inlet of the screw conveyor mechanism.

[0027] By installing a flexible connecting sleeve at the bottom of the hopper, the hopper is prevented from being rigidly connected to the frame. If powder is blocked at the outlet of the hopper, the powder can be prevented from bridging and accumulating by tapping the flexible connecting sleeve.

[0028] In one embodiment, a buffer guide device is further connected between the hopper and the frame;

[0029] The frame is equipped with a striking device, which is spaced apart from the side wall of the hopper and is used to vibrate the material inside the hopper when it comes into contact with the hopper.

[0030] By setting up a buffer guide device, the hopper and the frame can have a certain amount of displacement. When traveling on uneven surfaces such as fields, the hopper moves back and forth through the buffer guide device. Combined with the striking device, the side of the hopper is struck, causing the powder in the hopper to vibrate. This avoids the accumulation and bridging of powder in the hopper due to friction, thus preventing discontinuity in the marked lines.

[0031] In one embodiment, the buffer guide device includes:

[0032] Several telescopic guide rods, the bottom of which is fixed to the frame and the top of which is connected to the top edge of the hopper;

[0033] Several elastic elements are sleeved on the telescopic guide rod, and the two ends of the elastic elements are respectively used to abut against the top edge of the hopper and the frame.

[0034] The telescopic guide rod allows the hopper to move back and forth along its length, while the elastic element reduces vibrations caused by uneven ground, filtering out some of the vibrations transmitted to the hopper. The elastic element must be designed to ensure that the striking device can reach the hopper when walking on uneven surfaces.

[0035] In one embodiment, the top opening diameter of the hopper is larger than the bottom outlet diameter, and the top opening of the hopper is fitted with a top cover.

[0036] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0037] 1. The spiral conveyor mechanism features a simple structure, convenient operation, high marking accuracy, and strong adaptability. It can operate stably in complex terrain and different soil types, meeting the deployment needs of various breeding experiment scenarios, and is therefore practically necessary.

[0038] 2. The application of this device is expected to effectively solve the problems of high labor intensity, poor consistency and lack of standardization in the current field test setup, address the key technical pain points of front-line crop breeding work, conform to the development direction of agricultural mechanization, significantly optimize the test setup process, improve work efficiency and setup quality, and provide strong support for the scientificity and reliability of breeding test results. Attached Figure Description

[0039] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0041] Figure 2 for Figure 1 A side view structural diagram.

[0042] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction.

[0043] Figure label:

[0044] 1. Frame; 2. Screw conveyor mechanism; 3. Hopper; 4. Traveling mechanism; 5. Handrail; 6. Flexible connecting sleeve; 7. Buffer guide device; 8. Striking device;

[0045] 201. Conveying pipe; 202. Conveying shaft; 203. Spiral blade;

[0046] 401. Drive shaft; 402. Wheel; 403. Bearing;

[0047] 701. Telescopic guide rod; 702. Elastic element. Detailed Implementation

[0048] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0049] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0050] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0051] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0052] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0053] Example

[0054] like Figures 1-3 As shown, the field test plot marking device provided by this utility model includes: a frame 1, a walking mechanism 4, a screw conveyor mechanism 2, and a hopper 3.

[0055] The screw conveyor 2 is located at the bottom of the frame 1. The screw conveyor 2 is provided with a discharge port. The hopper 3 is located on the frame 1. The hopper 3 and the traveling mechanism 4 on the upper and lower parts of the frame 1 can drive the hopper 3 to move. The discharge port of the hopper 3 is connected to the inlet of the screw conveyor 2. The hopper 3 stores the powder material required for drawing lines. The powder material in the hopper 3 can enter the screw conveyor 2 through the bottom discharge port, and then be sprinkled onto the ground from the discharge port of the screw conveyor 2.

[0056] The traveling mechanism 4 is connected to the conveying shaft 202 of the screw conveyor 2. The traveling mechanism 4 is used to drive the conveying shaft 202 of the screw conveyor 2 to rotate, so that the screw conveyor 2 and the traveling mechanism 4 cooperate. The traveling mechanism 4 drives the screw conveyor 2. When the entire marking device moves forward, the screw conveyor 2 moves, so that the powder in the hopper 3 can be thrown out from the discharge port of the screw conveyor 2 in real time. When moving forward, the powder is accurately dropped to complete the marking, ensuring that the powder in the hopper 3 can be discharged smoothly.

[0057] To facilitate the movement of the marking device, a handrail 5 is also included. The handrail 5 is disposed on both sides of the hopper 3. The handrail 5 extends incline in the backward direction and the inclination angle of the handrail 5 is relatively large, that is, the angle between the handrail 5 and the horizontal plane.

[0058] To ensure that the position of the drawn line is controllable, the discharge port of the screw conveyor 2 is located on the central axis of the drawing device. This central axis is parallel to the forward direction of the drawing device and is located in the middle position perpendicular to the forward direction. By setting the discharge port of the screw conveyor 2 on the central axis at the bottom, the drawn line can always be kept in the middle position of the path through which the drawing device moves forward, thus ensuring that the position of the drawn line is controllable.

[0059] In this embodiment, the spiral conveying mechanism 2 includes a conveying pipe 201 and a conveying shaft 202.

[0060] The conveying pipe 201 is located at the bottom of the frame 1. The conveying pipe 201 is hollow inside and closed at both ends. The conveying pipe 201 is provided with an inlet and an outlet. The conveying pipe 201 has a conveying channel along a first direction perpendicular to the forward movement. The conveying shaft 202 is rotatably connected to the conveying pipe 201 along the first direction. The conveying shaft is provided with a spiral blade 203. The spiral blade 203, which is rotatably engaged in the conveying pipe 201, can continuously convey powder. The two ends of the conveying shaft can rotate in the conveying pipe 201 through bearings 403 or other means.

[0061] Specifically, there are two walking mechanisms 4 arranged at intervals in front and behind. The walking mechanism 4 is used to contact the ground to support the frame 1 and ensure smooth walking. The walking mechanism 4 includes a drive shaft 401 and wheels 402. The number of wheels 402 can be selected according to the actual situation, and the number of wheels 402 of the two walking mechanisms 4 is not less than three, so as to ensure the stability of the two walking mechanisms 4 in supporting the entire device.

[0062] The drive shaft 401 is fixed to the bottom of the frame 1 via a bearing 403 seat. The drive shaft 401 is connected to the frame 1 via the bearing 403 seat, ensuring smooth rotation of the drive shaft 401. The wheels 402 are connected to the drive shaft 401. The drive shaft 401 of one of the walking mechanisms 4 is coaxially connected to the conveyor shaft 202, driving the conveyor shaft 202 to rotate. Specifically, the drive shaft 401 can be coaxially fixed to the ends of the conveyor shaft 202 extending out of the conveyor pipe 201, or the drive shaft 401 can directly replace the conveyor shaft 202, passing through the conveyor... At both ends of the pipe 201, the spiral blades 203 are fixed on the drive shaft 401 inside the conveying pipe 201. By connecting the drive shaft 401 in the walking mechanism 4 with the conveying shaft 202 in the screw conveying mechanism 2, or sharing a shaft, the wheels 402 connected on the shaft can rotate during the walking process, which can drive the spiral blades 203 to rotate. Thus, while walking, the powder in the hopper 3 is conveyed, and the powder is discharged from the outlet in real time and scattered on the road surface to form a line. The way the spiral blades 203 discharge the powder allows the powder to be gradually pushed out, ensuring the continuity of the discharge.

[0063] The discharge port of the hopper 3 is connected to a flexible connecting sleeve 6. The other end of the flexible connecting sleeve 6 is connected to the feed port of the screw conveyor 2. As the discharge port at the bottom of the hopper 3 gradually narrows, the powder is prone to bridging at the bottom of the hopper 3. By setting the flexible connecting sleeve 6 at the bottom of the hopper 3, the hopper 3 is prevented from being rigidly connected to the frame 1. If the powder is blocked at the discharge port of the hopper 3, the powder can be prevented from bridging and accumulating by tapping the flexible connecting sleeve 6.

[0064] To ensure smooth and non-accumulated material discharge from the hopper 3 during movement, a buffer guide device 7 is connected between the hopper 3 and the frame 1. A striking device 8 is provided on the frame 1, which is spaced apart from the side wall of the hopper 3 and is used to vibrate the material inside the hopper 3 when it comes into contact with the hopper 3.

[0065] By setting up a buffer guide device 7, the hopper 3 and the frame 1 can have a certain amount of displacement. When walking on uneven roads such as fields, the hopper 3 moves back and forth through the buffer guide device 7. In conjunction with the striking device 8, the side of the hopper 3 is struck, causing the powder in the hopper 3 to vibrate. The combination of the buffer guide device 7 and the striking device 8 avoids the accumulation and bridging of powder in the hopper 3 due to friction, thus avoiding discontinuity in the marked lines.

[0066] The striking device 8 includes a connecting rod and a striking part. One end of the connecting rod is fixed to the frame 1, and the other end is covered with the striking part. The striking part can be covered with a flexible material to avoid damage caused by hard collision with the hopper 3. When the striking part hits the hopper 3, it can generate a certain displacement through the connecting rod.

[0067] Specifically, the buffer guide device 7 includes at least three telescopic guide rods 701 and three corresponding elastic elements 702.

[0068] The bottom of the telescopic guide rod 701 is fixed to the frame 1, and its top is connected to the top edge of the hopper 3, serving as a guide. The elastic element 702 is sleeved on the telescopic guide rod 701. The two ends of the elastic element 702 are respectively used to abut against the top edge of the hopper 3 and the frame 1. The elastic element 702 can be implemented by using a spring sleeved on the telescopic guide rod 701.

[0069] The telescopic guide rod allows the hopper 3 to move back and forth along the length of the telescopic guide rod, while the elastic element 702 can reduce the vibration caused by uneven ground and filter out some of the vibration transmitted to the hopper 3. The elastic element 702 must be set to ensure that the striking device 8 can touch the hopper 3 when walking on uneven ground.

[0070] To prevent external debris from entering the hopper 3, the top opening of the hopper 3 is fitted with a top cover. The diameter of the top opening of the hopper 3 is larger than the diameter of its bottom outlet, making the hopper 3 an inverted cone shape. The top opening of the hopper 3 facilitates the pouring of powder, while the bottom opening becomes smaller and corresponds to the feed inlet on the conveying pipe 201.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A field test plot marking device, characterized in that, include: frame; A screw conveyor mechanism is located at the bottom of the frame, and the screw conveyor mechanism is provided with a discharge port; A traveling mechanism is connected to the conveying shaft of the screw conveyor mechanism, and the traveling mechanism is used to drive the conveying shaft of the screw conveyor mechanism to rotate. A hopper is mounted on the frame, and the outlet of the hopper is connected to the inlet of the screw conveyor mechanism.

2. The marking device according to claim 1, characterized in that, It also includes a handrail, which is disposed on the hopper and extends at an angle toward the rearward direction.

3. The marking device according to claim 1, characterized in that, The discharge port of the screw conveyor is located on the central axis of the marking device.

4. The marking device according to claim 1, characterized in that, The spiral conveying mechanism includes: A conveying pipe is provided at the bottom of the frame. The conveying pipe is hollow inside and closed at both ends, forming a conveying channel along a first direction perpendicular to the forward movement. A conveying shaft is rotatably connected to the conveying pipe in a first direction, and the conveying shaft is provided with helical blades.

5. The marking device according to claim 4, characterized in that, The walking mechanism has two sections spaced at the front and rear, and the walking mechanism includes: A drive shaft, which is fixed to the bottom of the frame via a bearing housing; The wheels are connected to the drive shaft. One of the walking mechanisms has a drive shaft coaxially connected to the conveying shaft, which is used to drive the conveying shaft to rotate.

6. The marking device according to claim 1, characterized in that, The discharge port of the hopper is connected to a flexible connecting sleeve, and the other end of the flexible connecting sleeve is connected to the inlet of the screw conveyor mechanism.

7. The marking device according to claim 6, characterized in that, A buffer guide device is also connected between the hopper and the frame; The frame is equipped with a striking device, which is spaced apart from the side wall of the hopper and is used to vibrate the material inside the hopper when it comes into contact with the hopper.

8. The marking device according to claim 7, characterized in that, The buffer guiding device includes: Several telescopic guide rods, the bottom of which is fixed to the frame and the top of which is connected to the top edge of the hopper; Several elastic elements are sleeved on the telescopic guide rod, and the two ends of the elastic elements are respectively used to abut against the top edge of the hopper and the frame.

9. The marking device according to claim 1, characterized in that, The top opening of the hopper is larger than the bottom outlet diameter, and the top opening of the hopper is fitted with a top cover.

Images