Test device for simulating continuous drought disaster of crops under different gradients

Abstract

The invention discloses a test device for simulating continuous drought disaster of crops under different gradients, and relates to the technical field of agricultural planting. To solve the problem; the device is arranged in one group or multiple groups and specifically comprises a supporting frame and a planting frame, the supporting frame is rotationally matched with one end of the planting frame through a rotary connecting piece, a lifting part used for controlling the planting frame to rotate relative to the supporting frame is arranged between the supporting frame and the planting frame, and the lifting part comprises a connecting rod, an internal thread sliding rod, a threaded rod and a shell; according to the device, the supporting frame used for supporting and the planting frame used for planting are arranged, meanwhile, the lifting part is arranged to drive the planting frame to rotate relative to the supporting frame, and therefore crop growth tests under different gradients can be simulated; growth tests of crops under the same gradient in different growth cycles can be controlled in a single group, and growth tests of crops under different gradients in the whole growth cycle can be simulated in multiple groups.

Description

Technical Field

[0001] This invention relates to the field of agricultural planting technology, and in particular to an experimental device for simulating the continuous drought damage to crops on different slopes. Background Technology

[0002] Before crops are planted in large quantities, laboratory culture experiments are required to determine the crop's growth environment, growth defects, or growth advantages. Drought experiments are one of the routine experiments.

[0003] The basic procedure for drought experiments is as follows: First, prepare an experimental area with a controllable experimental environment, including dimensions such as temperature, soil composition, and irrigation volume. Then, prepare planting areas in the experimental area to plant crops. During the planting process, control different experimental environments, observe the growth status of crops, and finally determine the growth status of crops under different drought conditions based on the growth status.

[0004] Traditional experiments are mostly conducted on flat land or fixed slopes, which cannot study the combined effects of dynamic changes in slope on soil moisture transport, crop root development and drought stress.

[0005] Therefore, this invention proposes an experimental device to simulate the continuous drought damage to crops under different slopes. Summary of the Invention

[0006] The purpose of this invention is to address the shortcomings of existing technologies by proposing an experimental device to simulate the continuous drought damage to crops under different slopes.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An experimental device for simulating continuous drought damage to crops under different slopes is provided. It is arranged in one or more sets and includes a support frame and a planting frame. One end of the support frame and the planting frame are rotatably connected by a rotating connector, and a lifting part for controlling the rotation of the planting frame relative to the support frame is provided between the support frame and the planting frame.

[0009] The lifting unit includes a connecting rod, an internally threaded slide rod, a threaded rod, and a housing. The outer wall of the housing is fixedly connected to the support frame via a bracket. The internally threaded slide rod is slidably connected to the inner wall of the housing. The threaded rod is rotatably connected to the inner wall of the housing, and the outer wall of the threaded rod is threadedly connected to the inner wall of the internally threaded slide rod. One end of the connecting rod is rotatably connected to the end of the internally threaded slide rod, and the other end of the connecting rod is rotatably connected to the bottom outer wall of the planting frame on the side away from the rotating connector.

[0010] Furthermore, the inner side of the support frame is provided with a movable drive unit for rotating the threaded rod.

[0011] Preferably, the movable drive unit includes a movable frame and a motor. The motor is fixed to the inner wall of the movable frame by bolts. The output shaft of the motor is driven by a transmission cylinder through a gear set. The transmission cylinder is rotatably connected to the inner wall of the movable frame, and the inner wall of the transmission cylinder is driven by a main shaft. The other end of the main shaft is connected to the end of a threaded rod in a clutch-type transmission.

[0012] Furthermore: a friction drive plate one is fixed to the end of the threaded rod, and a friction drive plate two that cooperates with the friction drive plate one is fixed to the end of the main shaft.

[0013] Based on the aforementioned scheme: the main shaft is movably inserted into the inner wall of the transmission cylinder, and the inner wall of the transmission cylinder is provided with a groove, and the outer wall of the main shaft is fixed with a spline protrusion that fits the groove with a clearance.

[0014] A better embodiment of the aforementioned scheme is that: an end plate is fixed to the end of the main shaft, a permanent magnet is fixed to the outer wall of the other side of the end plate, and an electromagnet that works in conjunction with the permanent magnet is fixed to the inner wall of the moving frame.

[0015] As a further aspect of the present invention: the active drive unit further includes a guide frame that penetrates and is fixed to the inner wall of the support frame, the guide frame having a "U" shaped cross-section and open ends.

[0016] Meanwhile, the bottom of the mobile frame is rotatably connected to multiple sets of limiting wheels, which roll in cooperation with the ground of the guide frame. The side wall of the mobile frame is rotatably connected to multiple sets of limiting wheels, which roll in cooperation with the inner side of the guide frame.

[0017] As a preferred embodiment of the present invention: the bottom of the movable frame is fixed with a second motor by bolts, and the output shaft of the second motor is fixed to the rotation center side wall of the first limiting wheel.

[0018] Meanwhile, the bottom outer wall of the support frame is equipped with multiple sets of universal wheels with brakes, the side wall of the support frame is equipped with connecting plates at both ends for connecting adjacent support frames, and one side of the support frame is equipped with a traction hook.

[0019] As a preferred embodiment of the present invention: a steel mesh is fixed to the inner wall of the planting frame, and multiple partitions are fixed to the inner wall of the steel mesh, which divide the inner cavity of the steel mesh into multiple planting areas.

[0020] Each planting area is covered with one or more layers of permeable geotextile, and the planting area contains planting soil.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. The present invention, by setting up a support frame for support and a planting frame for planting, and by setting up a lifting part to drive the planting frame to rotate relative to the support frame, can simulate crop growth experiments under different slopes. In addition, by setting the device into one or more sets, a single set can control the growth experiment of crops under the same slope at different growth cycles, and multiple sets can simulate the growth experiment of crops under different slopes throughout the entire growth cycle.

[0023] 2. In this invention, by setting the drive of the threaded rod by the movable drive unit to a clutch-type drive, and by setting components such as limit wheel one and limit wheel two, when multiple sets of devices are used in parallel, the channel generated by the connection of the guide frame can be used to enable a single set of movable drive units to adjust different planting rack angles, thus saving power layout.

[0024] 3. This invention, by setting up components such as a traction hook and a universal wheel with brakes, allows the entire device to be moved by agricultural machinery or other traction equipment, thus increasing the flexibility of the device's movement.

[0025] 4. This invention, by setting up a steel mesh and geotextile, can prevent soil erosion while ensuring water permeability and air permeability, thus ensuring the reliability of crop growth. At the same time, by setting up partitions, the steel mesh is divided into multiple planting areas, thereby enabling multiple self-control groups for crops under the same slope. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall main structure of an experimental device for simulating continuous drought damage to crops under different slopes, as proposed in this invention.

[0027] Figure 2 This is a schematic cross-sectional view of the experimental device proposed in this invention for simulating continuous drought damage to crops under different slopes.

[0028] Figure 3 This is a schematic diagram of the active drive unit of an experimental device for simulating continuous drought damage to crops under different slopes, as proposed in this invention.

[0029] Figure 4 This is a cross-sectional view of the transmission cylinder and main shaft of an experimental device for simulating continuous drought damage to crops under different slopes, as proposed in this invention.

[0030] Figure 5 This is a schematic diagram of the structure of the experimental device for simulating continuous drought damage to crops under different slopes, including the universal wheel with brake, the connecting disc, and the traction hook.

[0031] Figure 6This is a schematic diagram of the steel mesh, partitions, and planting area location structure of an experimental device for simulating continuous drought damage to crops under different slopes, as proposed in this invention.

[0032] In the diagram: 1. Support frame; 2. Planting rack; 3. Rotary connector; 4. Movable drive unit; 5. Lifting unit; 6. Connecting rod; 7. Internal threaded slide bar; 8. Threaded rod; 9. Housing; 10. Bracket; 11. Friction transmission plate one; 12. Friction transmission plate two; 13. Transmission cylinder; 14. Gear set; 15. Guide frame; 16. Main shaft; 17. End plate; 18. Motor one; 19. Permanent magnet; 20. Electromagnet; 21. Motor two; 22. Moving frame; 23. Limiting wheel one; 24. Limiting wheel two; 25. Spline protrusion; 26. Groove; 27. Universal wheel with brake; 28. Connecting plate; 29. ​​Traction hook; 30. Steel mesh; 31. Partition; 32. Planting area. Detailed Implementation

[0033] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0034] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] Example 1:

[0036] An experimental device for simulating the effects of prolonged drought on crops on different slopes, such as... Figures 1-6 As shown, it is arranged in one or more sets, specifically including a support frame 1 and a planting frame 2. One end of the support frame 1 and the planting frame 2 are rotatably connected by a rotating connector 3, and a lifting part 5 is provided between the support frame 1 and the planting frame 2 to control the rotation of the planting frame 2 relative to the support frame 1.

[0037] The lifting part 5 includes a connecting rod 6, an internally threaded slide rod 7, a threaded rod 8, and a housing 9. The outer wall of the housing 9 is fixedly connected to the support frame 1 via a bracket 10. The internally threaded slide rod 7 is slidably connected to the inner wall of the housing 9. The threaded rod 8 is rotatably connected to the inner wall of the housing 9, and the outer wall of the threaded rod 8 is threadedly connected to the inner wall of the internally threaded slide rod 7. One end of the connecting rod 6 is rotatably connected to the end of the internally threaded slide rod 7, and the other end of the connecting rod 6 is rotatably connected to the bottom outer wall of the planting frame 2 on the side away from the rotating connector 3.

[0038] Furthermore, the inner side of the support frame 1 is provided with a movable drive part 4 for rotating the threaded rod 8.

[0039] In addition, this device should also include or be used in conjunction with an environmental simulation device, which can control environmental parameters such as irrigation amount and temperature of crops during the growth process. Since it is existing technology and a conventional means for those skilled in the art, this embodiment has not made any creative effort on it, so it will not be described in detail.

[0040] When this device is in use, crops can be planted on the planting frame 2, and then the growth environment of the crops can be controlled by the environmental simulation device. At the same time, when the active drive unit 4 drives the threaded rod 8 to rotate, the threaded rod 8 will cause the internal threaded slide rod 7 to slide along the shell 9 due to the threaded connection with the internal threaded slide rod 7. This will cause the planting frame 2 to rotate relative to the support frame 1 through the connecting rod 6, so that the crops can be grown under different slopes.

[0041] This device, by setting up a support frame 1 for support and a planting frame 2 for planting, and setting up a lifting part 5 to drive the planting frame 2 to rotate relative to the support frame 1, can simulate crop growth experiments under different slopes. In addition, by setting the device into one or more sets, a single set can control the growth experiment of crops under the same slope at different growth cycles, and multiple sets can simulate the growth experiment of crops under different slopes throughout the entire growth cycle.

[0042] To solve the driver problem; such as Figure 4 and Figure 5 As shown, the movable drive unit 4 includes a movable frame 22 and a motor 18. The motor 18 is fixed to the inner wall of the movable frame 22 by bolts. The output shaft of the motor 18 is driven by a transmission cylinder 13 through a gear set 14. The transmission cylinder 13 is rotatably connected to the inner wall of the movable frame 22, and the inner wall of the transmission cylinder 13 is driven by a main shaft 16. The other end of the main shaft 16 is connected to the end of the threaded rod 8 in a clutch-type transmission.

[0043] The end of the threaded rod 8 is fixed with a friction transmission plate 11, and the end of the main shaft 16 is fixed with a friction transmission plate 12 that cooperates with the friction transmission plate 11.

[0044] The main shaft 16 is movably inserted into the inner wall of the transmission cylinder 13, and the inner wall of the transmission cylinder 13 is provided with a groove 26. The outer wall of the main shaft 16 is fixed with a spline protrusion 25 that is clearance-fitted with the groove 26.

[0045] An end plate 17 is fixed to the end of the main shaft 16, and a permanent magnet 19 is fixed to the outer wall of the other side of the end plate 17. An electromagnet 20 that works in conjunction with the permanent magnet 19 is fixed to the inner wall of the movable frame 22.

[0046] The active drive unit 4 also includes a guide frame 15 that passes through and is fixed to the inner wall of the support frame 1. The guide frame 15 has a "U" shaped cross section and both ends of the guide frame 15 are open.

[0047] The bottom of the movable frame 22 is rotatably connected to multiple sets of limiting wheels 23, which roll in cooperation with the ground of the guide frame 15. The side wall of the movable frame 22 is rotatably connected to multiple sets of limiting wheels 24, which roll in cooperation with the inner side of the guide frame 15. The bottom of the movable frame 22 is fixed with a motor 21 by bolts, and the output shaft of the motor 21 is fixed to the rotation center side wall of the limiting wheels 23.

[0048] When electromagnet 20 is energized, it generates a magnetic field. If the magnetic field generated by electromagnet 20 repels the magnetic field of permanent magnet 19, the repulsive force will push end plate 17 and main shaft 16 to move, causing friction transmission plate one 11 and friction transmission plate two 12 to fit tightly together for transmission. At this time, when motor one 18 starts, it drives transmission cylinder 13 to rotate through gear set 14, thereby driving main shaft 16 to rotate through spline protrusion 25 and groove 26, and then driving threaded rod 8 to rotate through friction transmission plate one 11 and friction transmission plate two 12. When multiple sets of devices are used, due to the openings on both sides of guide frame 15, multiple guide frames 15 form a In each channel, once the angle of one of the planting racks 2 is adjusted to the required angle, the electromagnet 20 generates a magnetic field that attracts the permanent magnet 19. The friction transmission plate 11 and the friction transmission plate 22 separate, and then the motor 21 is started, which drives the limit wheel 23 to rotate, thereby causing the entire movable drive unit 4 to move along the guide frame 15 until it moves to the next threaded rod 8. Then, the electromagnet 20 generates a magnetic field that repels the permanent magnet 19, and then the motor 18 drives the threaded rod 8 at that location to rotate, adjusting the angle of the planting rack 2. This process is repeated until all the planting racks 2 reach the required angle.

[0049] This device, by setting the drive of the movable drive unit 4 to the threaded rod 8 as a clutch drive, and by setting components such as limit wheel 1 23 and limit wheel 24, allows a single movable drive unit 4 to adjust the angle of different planting racks 2 by utilizing the channel generated by the connection of the guide frame 15 when multiple sets of devices are used in parallel, thus saving power layout.

[0050] To solve the mobility problem; such as Figure 5 As shown, the bottom outer wall of the support frame 1 is provided with multiple sets of universal wheels 27 with brakes, the side wall of the support frame 1 is provided with connecting plates 28 fixed at both ends for connecting adjacent support frames 1, and one side of the support frame 1 is provided with a traction hook 29.

[0051] When it is necessary to move the device, the brake of the universal wheel 27 with brake can be engaged, and then agricultural machinery or other traction equipment can be used to move the device by means of the towing hook 29 to the desired location.

[0052] This device, by incorporating components such as a traction hook 29 and a universal wheel with brakes 27, can be moved by agricultural machinery or other traction equipment, thus increasing the flexibility of its movement.

[0053] In this embodiment, crops can be planted on the planting rack 2, and the growth environment of the crops can be controlled by an environmental simulation device. Simultaneously, when the movable drive unit 4 drives the threaded rod 8 to rotate, the threaded rod 8, due to its threaded connection with the internal threaded slide rod 7, causes the internal threaded slide rod 7 to slide along the housing 9. This, through the connecting rod 6, causes the planting rack 2 to rotate relative to the support frame 1, allowing the crops to grow under different slopes. The specific adjustment of the planting rack 2 is as follows: when the electromagnet 20 is energized, it generates a magnetic field. If the magnetic field generated by the electromagnet 20 and the magnetic field of the permanent magnet 19 generate a magnetic repulsion force, the magnetic repulsion force will push the end plate 17 and the main shaft 16 to move, causing the friction transmission plate 11 and the friction transmission plate 12 to fit tightly together for transmission. At this time, when the motor 18 starts, it drives the transmission cylinder 13 to rotate through the gear set 14, thereby driving the spline protrusion 2... 5 and groove 26 drive the main shaft 16 to rotate, and then drive the threaded rod 8 to rotate through friction transmission plate 11 and friction transmission plate 22. When multiple sets of devices are used, due to the openings on both sides of the guide frame 15, multiple guide frames 15 form a channel. After the angle of one of the planting frames 2 is adjusted to the required angle, the electromagnet 20 generates a magnetic field that attracts the permanent magnet 19. The friction transmission plate 11 and friction transmission plate 22 separate, and then the motor 21 is started, which drives the limit wheel 123 to rotate, so that the entire movable drive part 4 moves along the guide frame 15 until it moves to the next threaded rod 8. Then the electromagnet 20 generates a magnetic field that repels the permanent magnet 19. Then the motor 18 drives the threaded rod 8 at that point to rotate, adjusting the angle of the planting frame 2. This process is repeated until all the planting frames 2 reach the required angle.

[0054] Example 2:

[0055] An experimental device for simulating the effects of prolonged drought on crops on different slopes, such as... Figure 6 As shown, in order to solve the planting problem, this embodiment makes the following improvements based on embodiment 1: a steel mesh 30 is fixed to the inner wall of the planting frame 2, and multiple partitions 31 are fixed to the inner wall of the steel mesh 30, which divide the inner cavity of the steel mesh 30 into multiple planting areas 32.

[0056] Each planting area 32 is lined with one or more layers of permeable geotextile, and the planting area 32 contains planting soil.

[0057] This device, by setting up a steel mesh 30 and geotextile, can prevent soil erosion while ensuring water permeability and air permeability, thus ensuring the reliability of crop growth. At the same time, by setting up partitions 31, the steel mesh 30 is divided into multiple planting areas 32, thereby enabling multiple self-control groups for crops under the same slope.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An experimental device for simulating continuous drought damage to crops on different slopes, comprising one or more sets, characterized in that, It includes a support frame (1) and a planting frame (2). One end of the support frame (1) and the planting frame (2) are rotatably connected by a rotating connector (3). A lifting part (5) for controlling the rotation of the planting frame (2) relative to the support frame (1) is provided between the support frame (1) and the planting frame (2). The lifting part (5) includes a connecting rod (6), an internal thread slide rod (7), a threaded rod (8), and a housing (9). The outer wall of the housing (9) is fixedly connected to the support frame (1) by a bracket (10). The internal thread slide rod (7) is slidably connected to the inner wall of the housing (9). The threaded rod (8) is rotatably connected to the inner wall of the housing (9), and the outer wall of the threaded rod (8) is threadedly connected to the inner wall of the internal thread slide rod (7). One end of the connecting rod (6) is rotatably connected to the end of the internal thread slide rod (7), and the other end of the connecting rod (6) is rotatably connected to the bottom outer wall of the planting frame (2) away from the rotating connector (3). Furthermore, the inner side of the support frame (1) is provided with an active drive part (4) for rotating the threaded rod (8).

2. The experimental device for simulating continuous drought damage to crops under different slopes according to claim 1, characterized in that, The active drive unit (4) includes a movable frame (22) and a motor (18). The motor (18) is fixed to the inner wall of the movable frame (22) by bolts. The output shaft of the motor (18) is driven by a transmission cylinder (13) through a gear set (14). The transmission cylinder (13) is rotatably connected to the inner wall of the movable frame (22), and the inner wall of the transmission cylinder (13) is driven by a main shaft (16). The other end of the main shaft (16) is connected to the end of the threaded rod (8) in a clutch-type transmission.

3. The experimental device for simulating continuous drought damage to crops on different slopes according to claim 1, characterized in that, The end of the threaded rod (8) is fixed with a friction transmission plate one (11), and the end of the main shaft (16) is fixed with a friction transmission plate two (12) that cooperates with the friction transmission plate one (11).

4. The experimental device for simulating continuous drought damage to crops on different slopes according to claim 2, characterized in that, The main shaft (16) is movably inserted into the inner wall of the transmission cylinder (13), and the inner wall of the transmission cylinder (13) is provided with a groove (26), and the outer wall of the main shaft (16) is fixed with a spline protrusion (25) that is in clearance fit with the groove (26).

5. The experimental device for simulating continuous drought damage to crops on different slopes according to claim 4, characterized in that, The end of the main shaft (16) is fixed with an end plate (17), and a permanent magnet (19) is fixed on the outer wall of the other side of the end plate (17). An electromagnet (20) that works in conjunction with the permanent magnet (19) is fixed on the inner wall of the moving frame (22).

6. The experimental device for simulating continuous drought damage to crops on different slopes according to claim 5, characterized in that, The active drive unit (4) also includes a guide frame (15) that passes through and is fixed to the inner wall of the support frame (1). The guide frame (15) has a "U" shaped cross section and both ends of the guide frame (15) are open.

7. The experimental device for simulating continuous drought damage to crops on different slopes according to claim 6, characterized in that, The bottom of the mobile frame (22) is rotatably connected to multiple sets of limiting wheels (23), which roll in cooperation with the ground of the guide frame (15). The side wall of the mobile frame (22) is rotatably connected to multiple sets of limiting wheels (24), which roll in cooperation with the inner side of the guide frame (15).

8. The experimental device for simulating continuous drought damage to crops on different slopes according to claim 7, characterized in that, The bottom of the mobile frame (22) is fixed with a second motor (21) by bolts, and the output shaft of the second motor (21) is fixed to the rotation center side wall of the first limiting wheel (23).

9. The experimental device for simulating continuous drought damage to crops on different slopes according to claim 1, characterized in that, The bottom outer wall of the support frame (1) is provided with multiple sets of universal wheels (27) with brakes. The side wall of the support frame (1) is provided with connecting plates (28) at both ends for connecting adjacent support frames (1). A traction hook (29) is provided on one side of the support frame (1).

10. The experimental device for simulating continuous drought damage to crops under different slopes according to claim 1, characterized in that, The inner wall of the planting rack (2) is fixed with a steel mesh (30), and the inner wall of the steel mesh (30) is fixed with multiple partitions (31), which divide the inner cavity of the steel mesh (30) into multiple planting areas (32). Each planting area (32) is covered with one or more layers of permeable geotextile, and the planting area (32) contains planting soil.

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