Obstacle avoidance mechanism in pesticide spraying process of pesticide spraying machine

Abstract

The application relates to the technical field of pesticide spraying machine spray rod structures, and discloses an obstacle avoidance mechanism in the pesticide spraying process of a pesticide spraying machine, which comprises a cross frame fixedly installed on a traction mechanism, one end of the cross frame is provided with a lifting support, the two ends of the lifting support are respectively pinned to a group of first support frames, the outer side of the end surface of the first support frame is fixedly installed with a hinge, and the second support frame is pinned to the hinge, a group of fixing seats are respectively arranged on the end surfaces of the inner sides of the first support frame and the second support frame, the two groups of fixing seats are connected through spring transmission, and the end surfaces of the outer sides of the first support frame and the second support frame are provided with nozzles. The obstacle avoidance mechanism in the pesticide spraying process of the pesticide spraying machine enables the pesticide spraying machine to avoid obstacles without folding the spray rod or changing the running track, thereby effectively improving the working efficiency of the pesticide spraying machine and the uniformity of pesticide spraying.

Description

Technical Field

[0001] This invention relates to the field of spray bar structure technology for pesticide sprayers, specifically to an obstacle avoidance mechanism during the spraying process of a pesticide sprayer. Background Technology

[0002] A sprayer is an agricultural machine that uses pressure to spray a mixture of water and pesticide onto the surface of plants. In the process of rapid development of agricultural mechanization, it has become an indispensable tool. In order to improve the spray width and working efficiency of the sprayer, a longer spray boom is usually equipped on the sprayer, so as to achieve the maximum spraying area in one stroke of the sprayer.

[0003] However, sprayers equipped with long booms are greatly limited in their smooth operation by obstacles such as mounds and trees in the field. Either the boom needs to be folded to pass the obstacle and then extended, or the sprayer's trajectory needs to be changed to bypass the obstacle. Regardless of the method, operating the sprayer will affect its spraying efficiency of the pesticide mixture and significantly impact the uniformity of the spray. Furthermore, some vegetation around the obstacle may not be sprayed, resulting in significant limitations and poor stability and reliability in its use.

[0004] Furthermore, the long spray booms equipped in the sprayers are prone to violent collisions with obstacles in the field due to improper operation of the sprayers, which greatly affects the service life of the spray booms and poses significant safety hazards during operation.

[0005] Therefore, there is an urgent need for an obstacle avoidance mechanism for longer spray booms in sprayers to solve the defects of existing longer spray booms in actual operation. Summary of the Invention

[0006] (a) Technical problems to be solved

[0007] This invention provides an obstacle avoidance mechanism for a pesticide sprayer, enabling its long spray boom to bend and avoid obstacles encountered and subjected to force in the field, without needing to fold the boom or alter the sprayer's trajectory. This effectively improves the sprayer's efficiency and the uniformity of pesticide spraying, while preventing violent collisions with obstacles and offering high safety and reliability. It solves the problem that traditional sprayers with long spray booms are severely limited in their operation by obstacles such as mounds and trees, requiring either folding the boom to extend it after passing the obstacle or altering the sprayer's trajectory. The sprayer's trajectory allows it to bypass obstacles, but regardless of the method, operating the sprayer will affect its spraying efficiency of the pesticide mixture. Furthermore, the operation of the sprayer significantly impacts the uniformity of the pesticide mixture spraying and prevents spraying of some plants around obstacles, resulting in significant limitations in its use and poor stability and reliability. Moreover, the long spray boom equipped with the sprayer is prone to violent collisions with obstacles in the field due to improper operation, greatly affecting the boom's lifespan and posing significant safety hazards during operation.

[0008] (II) Technical Solution

[0009] The present invention provides the following technical solution: an obstacle avoidance mechanism during the spraying process of a sprayer, comprising a crossbeam fixedly installed on a traction mechanism, one end of the crossbeam being provided with a lifting support, and both ends of the lifting support being pinned to a set of first support frames, a hinge being fixedly installed on the outer side of the end face of the first support frame, and a second support frame being pinned to the hinge, a set of fixed seats being provided on the inner end face of the first support frame and the second support frame respectively, and the two sets of fixed seats being connected by spring transmission, a nozzle being provided on the outer end face of the first support frame and the second support frame, and several sets of nozzles on the second support frame being interconnected by a connecting pipe, while several sets of nozzles on the first support frame being interconnected by another set of connecting pipes, and the two sets of connecting pipes being connected by a flow limiting mechanism provided on the hinge.

[0010] Preferably, a set of columns is provided on both sides of the top of the first support frame, and a cable is fixedly installed on the top of the two sets of columns. One end of the cable on the right is fixedly connected to the other end of the first support frame, while one end of the cable on the left is fixedly connected to the outer side of the top of the second support frame.

[0011] Preferably, the hinge is divided into two parts and is fixedly installed on the end faces of the first support frame and the second support frame respectively, and the two parts of the hinge are movably connected by a pin, and the pin is fixedly connected to a part of the hinge fixedly installed on the second support frame.

[0012] Preferably, the flow limiting mechanism includes a fixed sleeve fixedly installed on the left side column at the top of the first support frame. The fixed sleeve has a movable shaft that is fixedly connected to the pin on the hinge. The fixed sleeve has a first groove inside and is connected to a connecting pipe that connects to the nozzle on the first support frame through a first guide groove opened in the upper part of the fixed sleeve. The movable shaft has a second groove on its outer surface and a second guide groove opened in the lower part of the fixed sleeve. The second guide groove is connected to a connecting pipe that connects to the nozzle on the second support frame.

[0013] Preferably, when the first groove on the fixed sleeve and the second groove on the movable shaft are in a linear structure with the first support frame and the second support frame, the first groove and the second groove are connected and the medicine mixture is normally transported. However, when the second support frame is subjected to external force and the movable shaft is rotated, the second groove and the first groove are misaligned and the transport of the medicine mixture is cut off.

[0014] Preferably, one end of the cross frame is movably connected to a lifting support via a connecting rod, and a lifting cylinder is pinned between the cross frame and the lifting support to drive its up and down movement.

[0015] Preferably, a transmission block is fixedly installed on one side of the end face of the first support frame, and is connected to the telescopic cylinder fixedly installed on one side of the end face of the lifting support.

[0016] (III) Beneficial Effects

[0017] The present invention has the following beneficial effects:

[0018] 1. The obstacle avoidance mechanism in the spraying process of this sprayer, with its connection structure between the first and second support frames, allows the second support frame to rotate along the pin on the hinge to avoid obstacles when subjected to external force under the action of a spring. After passing the obstacle and no longer subjected to external force, it can automatically return to its initial state under the elastic force of the spring. Compared with existing spray booms, this sprayer does not need to fold the spray boom or change its trajectory to avoid obstacles, thus effectively improving the working efficiency of the sprayer and the uniformity of the spraying of the pesticide. Furthermore, it avoids violent collisions between the second support frame and obstacles, resulting in a longer service life and higher safety and reliability.

[0019] 2. The obstacle avoidance mechanism in the spraying process of this sprayer, with its flow limiting mechanism and its upper structure, can automatically cut off the liquid delivery to the nozzles on the second support frame when the second support frame rotates. This effectively avoids the phenomenon of excessive spraying of the liquid mixture onto the plants around the obstacle due to the second support frame briefly stopping due to the obstruction of the obstacle. When the second support frame returns to its initial state, it can automatically resume the liquid delivery to the nozzles on the second support frame, further improving the uniformity of liquid spraying of the sprayer. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a cross-sectional view of the current-limiting mechanism of the present invention;

[0022] Figure 3 This is a partial top view of the structure of the present invention after folding;

[0023] Figure 4 This is a partial top view of the structure of the present invention after it has been extended.

[0024] In the diagram: 1. Horizontal frame; 2. Lifting support; 3. Lifting cylinder; 4. First support frame; 5. Transmission block; 6. Telescopic cylinder; 7. Hinge; 8. Second support frame; 9. Fixed seat; 10. Spring; 11. Nozzle; 12. Connecting pipe; 13. Column; 14. Cable; 15. Flow limiting mechanism; 16. Fixed sleeve; 17. First groove; 18. First guide channel; 19. Movable shaft; 20. Second groove; 21. Second guide channel. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1An obstacle avoidance mechanism for a sprayer during spraying includes a crossbeam 1 fixedly mounted on a traction mechanism. One end of the crossbeam 1 has a lifting support 2. Both ends of the lifting support 2 are pinned to a set of first support frames 4. A hinge 7 is fixedly mounted on the outer side of the end face of the first support frame 4, and a second support frame 8 is pinned to it via the hinge 7. A set of fixed seats 9 are respectively provided on the inner end faces of the first support frame 4 and the second support frame 8. The two sets of fixed seats 9 are connected by a spring 10 under constant pressure. Under the elastic force of the spring 10, the first support frame 4 and the second support frame 8 are in a linear structure. When the second support frame 8 is subjected to external force, it can rotate around the hinge 7, effectively reducing the impact of collisions with field obstacles on the second support frame of the sprayer. The impact generated by the support frame 8 is avoided while avoiding obstacles; when the external force on the second support frame 8 is eliminated, the second support frame 8 can automatically return to its initial state under the elastic force of the spring 10. Several sets of nozzles 11 in a linear array are provided on the outer end faces of the first support frame 4 and the second support frame 8. Several sets of nozzles 11 on the second support frame 8 are interconnected through a connecting pipe 12, while several sets of nozzles 11 on the first support frame 4 are interconnected through another set of connecting pipes 12. The two sets of connecting pipes 12 are connected by a flow limiting mechanism 15 provided on the hinge 7. One end of the other set of connecting pipes 12 is connected to a pump set fixedly installed on the traction mechanism, and the pump set is used to spray the medicine mixture in the medicine tank through the connecting pipe 12, the flow limiting mechanism 15 and the nozzles 11.

[0027] In this technical solution, a set of columns 13 are provided on both sides of the top of the first support frame 4, and a cable 14 is fixedly installed on the top of the two sets of columns 13. One end of the right cable 14 is fixedly connected to the other end of the first support frame 4, and one end of the left cable 14 is fixedly connected to the outer side of the top of the second support frame 8. Thus, the cable 14 is used to form a traction on one side of the top of the first support frame 4 and the second support frame 8, so that they are not easily deformed.

[0028] In this technical solution, the hinge 7 is divided into two parts and is fixedly installed on the end faces of the first support frame 4 and the second support frame 8 respectively. The two parts of the hinge 7 are movably connected by a pin, and the pin is fixedly connected to a part of the hinge 7 fixedly installed on the second support frame 8, thereby forming a movable connection between the first support frame 4 and the second support frame 8.

[0029] like Figure 2As shown, in this technical solution, the flow limiting mechanism 15 includes a fixed sleeve 16 fixedly installed on the left side column 13 at the top of the first support frame 4. The fixed sleeve 16 is movably sleeved with a movable shaft 19 fixedly connected to the pin on the hinge 7. When the second support frame 8 rotates, the movable shaft 19 can rotate accordingly. The fixed sleeve 16 has a first groove 17 inside, and is connected to a connecting pipe 12 that connects to several groups of nozzles 11 on the first support frame 4 through a first guide groove 18 opened in the upper part of the fixed sleeve 16. The outer surface of the movable shaft 19 has a second groove 20, and a second guide groove 21 is opened in the lower part of the fixed sleeve 16. The second guide groove 21 is connected to the connecting pipe 12 that connects to several groups of nozzles 11 on the second support frame 8. Thus, the flow limiting mechanism 15 connects several groups of nozzles 11 arranged linearly on the first support frame 4 and the second support frame 8.

[0030] In this technical solution, when the first groove 17 on the fixed sleeve 16 and the second groove 20 on the movable shaft 19 are in a linear structure, the first groove 17 and the second groove 20 are connected and the liquid mixture is normally transported. However, when the second support frame 8 is subjected to external force and the movable shaft 19 rotates accordingly, the second groove 20 and the first groove 17 are misaligned, cutting off the transport of the liquid mixture. This effectively avoids the second support frame 8 from being blocked by obstacles and temporarily stopping, which would cause it to spray excessive liquid mixture onto the plants around the obstacles.

[0031] In this technical solution, one end of the cross frame 1 is movably connected to the lifting support 2 via a connecting rod, and a lifting cylinder 3 is pinned between the cross frame 1 and the lifting support 2 to drive it to move up and down. Thus, during the operation of the sprayer, the lifting support 2 can be raised to avoid the protruding field ridge.

[0032] In this technical solution, a transmission block 5 is fixedly installed on one side of the end face of the first support frame 4, and is connected to the telescopic cylinder 6 fixedly installed on one side of the end face of the lifting support 2. Thus, under the transmission action of the telescopic cylinder 6, as... Figure 3 As shown, when the sprayer is not in operation, the first support frame 4 on both ends of the lifting support 2 is folded up by the telescopic cylinder 6; as Figure 4 As shown, when the sprayer is working, the first support frame 4 on both ends of the lifting support 2 is extended by the telescopic cylinder 6 to increase its effective spraying area.

[0033] The usage method and working principle of this embodiment are as follows:

[0034] First, fix the cross frame 1 and its structure to the traction mechanism as described above, and connect the pipeline system on it. Then, move the sprayer to the field where the pesticide mixture is to be sprayed and set a specific running trajectory.

[0035] Then, the telescopic cylinder 6 is activated, causing its output shaft to retract. Under the transmission action of the transmission block 5, the two sets of first support frames 4 at the upper end of the lifting support 2 rotate until they extend and are on the same central axis as the lifting support 2. Then, the pump set on the traction mechanism is activated to spray the mixture of medicine in the medicine tank through the connecting pipe 12, the flow limiting mechanism 15 and the nozzle 11. Under the traction action of the traction mechanism, the plants in the specific area are sprayed.

[0036] When the sprayer encounters obstacles such as mounds or trees during operation, the spring 10 can be stretched when the second support frame 8 comes into contact with the obstacle and is subjected to force, causing it to rotate along the pin of the hinge 7. At the same time, as the second support frame 8 rotates, the first groove 17 on the fixed sleeve 16 and the second groove 20 on the movable shaft 19 are misaligned, cutting off the delivery of the pesticide mixture in the connecting pipe 12. This prevents the several sets of nozzles 11 on the second support frame 8 from spraying pesticide, thus avoiding the problem of excessive spraying on the plants near the obstacle when it stops briefly.

[0037] When the second support frame 8 rotates to a certain extent and passes over the obstacle, under the elastic force of the spring 10, the second support frame 8 can be automatically driven back to the initial state. At the same time, the first groove 17 on the fixed sleeve 16 and the second groove 20 on the movable shaft 19 are connected again, and the spraying action of the pesticide on the field plants continues.

Claims

1. An obstacle avoidance mechanism during the spraying process of a sprayer, comprising a crossbeam (1) fixedly mounted on a traction mechanism, wherein one end of the crossbeam (1) is provided with a lifting support (2), and both ends of the lifting support (2) are respectively pinned to a set of first support frames (4), characterized in that: A hinge (7) is fixedly installed on the outer side of the end face of the first support frame (4), and a second support frame (8) is pinned to the hinge (7). A set of fixed seats (9) is provided on the inner end face of the first support frame (4) and the second support frame (8), and the two sets of fixed seats (9) are connected by a spring (10). A nozzle (11) is provided on the outer end face of the first support frame (4) and the second support frame (8), and several sets of nozzles (11) on the second support frame (8) are connected to each other through a connecting pipe (12), while several sets of nozzles (11) on the first support frame (4) are connected to each other through another set of connecting pipes (12). The two sets of connecting pipes (12) are connected by a flow limiting mechanism (15) provided on the hinge (7). The first support frame (4) has a set of columns (13) on both sides of the top, and a cable (14) is fixedly installed on the top of the two sets of columns (13). One end of the cable (14) on the right side is fixedly connected to the other end of the first support frame (4), while one end of the cable (14) on the left side is fixedly connected to the outer side of the top of the second support frame (8). The hinge (7) is divided into two parts and is fixedly installed on the end faces of the first support frame (4) and the second support frame (8) respectively. The two hinges (7) are movably connected by a pin, and the pin is fixedly connected to a part of the hinge (7) fixedly installed on the second support frame (8). The flow limiting mechanism (15) includes a fixed sleeve (16) fixedly installed on the left column (13) at the top of the first support frame (4). The fixed sleeve (16) is movably sleeved with a movable shaft (19) fixedly connected to the pin on the hinge (7). The fixed sleeve (16) has a first groove (17) inside and is connected to the connecting pipe (12) of the nozzle (11) on the first support frame (4) through a first guide groove (18) opened above the inside of the fixed sleeve (16). The movable shaft (19) has a second groove (20) on its outer surface and a second guide groove (21) is opened below the inside of the fixed sleeve (16). The second guide groove (21) is connected to the connecting pipe (12) of the nozzle (11) on the second support frame (8). When the first support frame (4) and the second support frame (8) are in a linear structure, the first groove (17) on the fixed sleeve (16) and the second groove (20) on the movable shaft (19) are connected and the liquid medicine mixture is normally transported. However, when the second support frame (8) is subjected to external force and the movable shaft (19) rotates accordingly, the second groove (20) and the first groove (17) are separated and the transport of the liquid medicine mixture is cut off.

2. The obstacle avoidance mechanism during the spraying process of a sprayer according to claim 1, characterized in that: One end of the cross frame (1) is movably connected to the lifting support (2) via a connecting rod, and a lifting cylinder (3) is pinned between the cross frame (1) and the lifting support (2) to drive it to move up and down.

3. The obstacle avoidance mechanism during the spraying process of a sprayer according to claim 1, characterized in that: A transmission block (5) is fixedly installed on one side of the end face of the first support frame (4), and is connected to the telescopic cylinder (6) fixedly installed on one side of the end face of the lifting support (2).

Images