A pesticide spraying device

Abstract

The application relates to a pesticide spraying device and belongs to the technical field of crop pesticide spraying equipment. The device comprises a support plate, a spraying assembly, a moving assembly and a driving assembly. The spraying assembly comprises a pesticide liquid tank fixed on one side of the support plate, a connecting pipe in communication with the pesticide liquid tank, and two spray pipes in communication with the connecting pipe at the middle part. The two spray pipes are curved in an arc shape and face away from each other. Multiple spray heads are in communication with the sides of the two spray pipes facing away from each other. The moving assembly comprises first moving wheels and second moving wheels. The first moving wheels and the second moving wheels are arranged on the side of the support plate far away from the pesticide liquid tank. The first moving wheels and the second moving wheels are arranged at the two ends of the support plate and are sequentially arranged along the running direction of the support plate. The driving assembly is arranged on the side of the support plate close to the pesticide liquid tank and is used for driving the pesticide liquid in the pesticide liquid tank to be sprayed and driving the two second moving wheels to rotate. The application has the effect of reducing the labor intensity of manual pesticide spraying.

Description

A pesticide spraying device Technical Field

[0001] This application relates to the technical field of crop pesticide spraying equipment, and in particular to a pesticide spraying device. Background Technology

[0002] In rural areas, to prevent and control crop pests, it is usually necessary to manually spray pesticides onto crops using pesticide spraying devices.

[0003] Currently, the most widely used pesticide spraying device is the shoulder-mounted type, where the pesticide tank is carried on the back of the person, and then the person uses one hand to squeeze the pesticide through the push rod to spray it, while the other hand holds the nozzle to spray the crops.

[0004] In order to ensure that pesticides are evenly sprayed on both sides of crop leaves, manual labor is required to continuously push the lever and swing the spray nozzle during the spraying process, which increases the labor intensity. Summary of the Invention

[0005] To reduce the labor intensity of manual pesticide spraying, this application provides a pesticide spraying device.

[0006] This application provides a pesticide spraying device, which adopts the following technical solution:

[0007] A pesticide spraying device, comprising:

[0008] Support plate;

[0009] The spraying assembly includes a liquid tank fixed to one side of the support plate, a connecting pipe connected to the liquid tank in the middle, and two spray pipes connected to the two ends of the connecting pipe in the middle. The connecting pipe is supported on the support plate by a support member. The two spray pipes are curved in an arc shape in a direction away from each other. Multiple nozzles are connected to the side of the two spray pipes that are away from each other.

[0010] The moving component includes a first moving wheel and a second moving wheel. Two of each of the first and second moving wheels are provided and are located on the side of the support plate away from the medicine tank. The first moving wheel and the second moving wheel are located at both ends of the support plate and are arranged sequentially along the traveling direction of the support plate.

[0011] A drive assembly is disposed on the side of the support plate near the medicine tank and is used to drive the medicine in the medicine tank to spray and to drive the two second moving wheels to rotate.

[0012] By adopting the above technical solution, the drive component can move the support plate by driving the second moving wheel to rotate. The drive component can drive the liquid in the liquid tank to be sprayed onto the crops through the connecting pipe, spray pipe and nozzle. The arc-shaped spray pipe can also spray the liquid onto both sides of the crop leaves at the same time. Thus, the drive component is used as the driving source to drive the liquid tank to move and drive the liquid to be sprayed onto both sides of the crop leaves, thereby reducing the labor intensity of manual spraying of liquid.

[0013] Optionally, the driving component includes:

[0014] The drive unit includes a support rod disposed on the support plate, a drive block slidably disposed on the support rod, a connecting rod connected to the drive block, a drive rod hinged to the connecting rod, and a motor connected to the drive rod and fixed on the support rod.

[0015] A spraying unit is connected between the liquid tank and the drive block, and is used to drive the liquid in the liquid tank to flow to the nozzle.

[0016] A movable part is connected between the second movable wheel and the drive block, and is used to drive the second movable wheel to rotate.

[0017] By adopting the above technical solution, the motor drives the drive rod to rotate, the drive rod drives the connecting rod to swing, the connecting rod pushes the drive block to slide back and forth on the support rod, and the drive block drives the liquid to flow to the nozzle through the spraying part to achieve the spraying of the liquid. The second moving wheel is driven to rotate through the moving part to achieve the movement of the support plate. Thus, the crank-slider mechanism facilitates the synchronous driving of liquid spraying and support plate movement.

[0018] Optionally, the spraying unit includes:

[0019] The push rod has one end fixed to the drive block and the other end inserted into the medicine tank through the vent hole on the medicine tank.

[0020] The piston is slidably disposed inside the medicine tank and is fixedly connected to one end of the push rod that is inserted into the medicine tank;

[0021] The spraying piston is slidably disposed inside the liquid tank and is located on the side of the squeezing piston away from the push rod, with a gap between the spraying piston and the squeezing piston;

[0022] The extrusion piston has an air inlet, and a sealing plate is provided at the air inlet. The sealing plate is located on the side of the extrusion piston close to the spray piston. The sealing plate is hinged to the extrusion piston, and a torsion spring is provided between the sealing plate and the extrusion piston to drive itself to adhere to the extrusion piston.

[0023] By adopting the above technical solution, the drive block drives the push rod to move, and the push rod drives the squeezing piston to slide. When the squeezing piston slides toward the spraying piston, the torsion spring causes the sealing plate to close the air inlet. The squeezing piston pushes the spraying piston with air pressure to squeeze the liquid medicine to flow to the nozzle. When the squeezing piston slides away from the spraying piston, since the liquid medicine tank can be connected to the outside through the vent, the air pressure can push the sealing plate to open the air inlet, making it easier for the squeezing piston to slide away from the spraying piston. This makes it easier for the liquid medicine to be sprayed during the reciprocating sliding process of the drive block.

[0024] Optionally, the moving part includes:

[0025] The movable rod is hinged at one end to the drive block;

[0026] The first connecting rod is coaxially fixed to the two second moving wheels at both ends, and both ends are rotatably connected to the support plate. The middle part of the first connecting rod is bent into a rectangle, and the bent part is hinged to the end of the moving rod away from the drive block.

[0027] By adopting the above technical solution, the driving block drives the moving rod to swing back and forth. During the swinging process, the moving rod drives the first connecting rod to rotate through the bent part of the first connecting rod. The first connecting rod drives the second moving wheel to rotate, thereby making the support plate easy to move during the reciprocating sliding process of the driving block.

[0028] Optionally, the support plate is provided with a swing assembly for driving the nozzle to swing back and forth.

[0029] By adopting the above technical solution, the oscillating component can drive the nozzle to oscillate back and forth, making the sprayed pesticide solution on the crops more uniform.

[0030] Optionally, the oscillating component includes:

[0031] A swing disk is fixed on the support member and coaxially arranged with the support member; the swing disk is rotatably connected to the support plate.

[0032] Two swing cylinders are provided, located on both sides of the swing disk respectively. The swing cylinders are hinged to the support plate, and the movable end of the swing cylinders is hinged to the side wall of the swing disk.

[0033] A drive cylinder is fixedly connected to the support plate, and the movable end of the drive cylinder is fixedly connected to the drive block;

[0034] Hydraulic oil flows through the rodless chamber of the drive cylinder and the rodless chamber of one of the swing cylinders via a first oil pipe; hydraulic oil flows through the rod chamber of the drive cylinder and the rodless chamber of the other swing cylinder via a second oil pipe; and hydraulic oil flows between the rod chambers of the two swing cylinders via a third oil pipe.

[0035] By adopting the above technical solution, when the drive block slides close to the support plate, the drive block drives the drive cylinder to retract. The drive cylinder squeezes the hydraulic oil in its rodless chamber and flows through the first oil pipe into the rodless chamber of one of the swing cylinders, and drives the swing cylinder to extend. The swing cylinder squeezes the hydraulic oil in its rod chamber and flows through the third oil pipe into the rod chamber of another swing cylinder, and drives the other swing cylinder to retract. The hydraulic oil in the rodless chamber of the other swing cylinder flows through the second oil pipe into the rod chamber of the drive cylinder. Thus, the two swing cylinders can drive the swing disk to rotate. Conversely, when the drive block slides away from the support plate, the two swing cylinders can drive the swing disk to rotate in the opposite direction, making the nozzle easier to swing.

[0036] Optionally, the support member is a telescopic rod, which is connected to the support plate. The movable end of the telescopic rod is fixedly connected to the connecting pipe. A lifting assembly is provided between the telescopic rod and the support rod, and the lifting assembly is used to drive the telescopic rod to extend or retract.

[0037] By adopting the above technical solution, the telescopic rod is extended and retracted through the lifting component, making it easy to adjust the height of the connecting pipe, so that the spraying device can spray pesticides on crops at different heights.

[0038] Optionally, the lifting assembly includes:

[0039] The screw is disposed in the lifting groove opened along the axial direction of the support rod and is rotatably connected to the support rod;

[0040] A lifting block is slidably disposed in the lifting groove and sleeved on the screw rod, and the lifting block is threadedly connected to the screw rod;

[0041] The lifting rope has one end that slides into the lifting groove and is fixedly connected to the lifting block, and the other end that slides into the rodless cavity of the telescopic rod and is fixedly connected to the movable end of the telescopic rod.

[0042] A lifting spring is fixed inside the rodless cavity of the telescopic rod and is used to drive the movable end of the telescopic rod to extend.

[0043] By adopting the above technical solution, rotating the screw drives the lifting block to slide, allowing the lifting block to pull the lifting rope. When the height of the connecting pipe needs to be lowered, the screw drives the lifting block to slide away from the support plate. The lifting block pulls the telescopic rod to retract through the lifting rope, and the lifting spring accumulates elastic force. When the height of the connecting pipe needs to be raised, the screw drives the lifting block to slide closer to the support plate. The lifting spring drives the telescopic rod to extend through its elastic force, thus making it easy to adjust the height of the connecting pipe.

[0044] Optionally, the support rod is connected to a steering assembly for driving the first moving wheel to change its direction of movement, the steering assembly comprising:

[0045] The handlebar is fixed to the end of the support rod away from the support plate.

[0046] A steering rod is rotatably mounted on the support plate and is connected to the end of the support rod near the support plate via a chain drive. The support rod is rotatably connected to the support plate. A connecting plate is rotatably connected to the drive block. The connecting plate is slidably connected to the support rod and hinged to the connecting rod.

[0047] The second connecting rod is rotatably connected to the two first moving wheels at both ends, and is fixedly connected to the steering rod in the middle.

[0048] By adopting the above technical solution, the support rod is rotated by the handlebar, and the support rod drives the steering rod to rotate through the chain drive. At the same time, since the drive block is hinged to the connecting rod through the connecting plate, the support rod is less likely to interfere with the driving of the connecting rod on the drive block when it rotates. The steering rod drives the second connecting rod to rotate, and the second connecting rod drives the two first moving wheels to change the direction of movement, thereby making the direction of movement of the support plate adjustable.

[0049] Optionally, two push rods are symmetrically fixed on the steering rod, and two control cylinders corresponding to the push rods are fixed on the support plate. A push cylinder is fixed on the side wall of the air inlet. The movable end of the push cylinder faces the sealing plate. The rodless chamber of the control cylinder is connected to the rodless chamber of the push cylinder through a fourth oil pipe, and hydraulic oil flows through the fourth oil pipe. When the steering rod is not turned, the control cylinder is in a fully extended state, and the push cylinder is in a fully retracted state. A return spring for driving the push cylinder to fully retract is fixed in the rod chamber of the push cylinder.

[0050] By adopting the above technical solution, when the steering rod rotates, the steering rod drives the push rod to swing. One of the push rods can drive its corresponding control cylinder to retract. The control cylinder squeezes hydraulic oil into the push cylinder through the fourth oil pipe and drives the movable end of the push cylinder to extend. The push cylinder drives the sealing plate to open the air inlet, making it difficult for the squeezing piston to push the spraying piston to slide by air pressure. As a result, when the support plate turns, the spray nozzle can automatically stop spraying liquid, saving the use of liquid.

[0051] In summary, this application includes at least one of the following beneficial technical effects:

[0052] 1. The push rod and moving rod are driven by the reciprocating sliding of the drive block on the support rod, so that the spraying of the liquid and the movement of the support plate can be carried out automatically, reducing the labor intensity of manual spraying of liquid.

[0053] 2. By driving the drive cylinder with the drive block and the swing cylinder with the drive cylinder, the spray nozzle can swing more easily, thereby making the spraying of the liquid more uniform.

[0054] 3. By setting up a screw, lifting block, lifting rope and lifting spring, the height of the connecting pipe can be easily adjusted, so that the spraying device can spray pesticides on crops at different heights;

[0055] 4. The steering rod is driven to rotate by the support rod, making it easy to adjust the direction of movement of the support plate. Attached Figure Description

[0056] Figure 1 is a structural schematic diagram of an embodiment of this application;

[0057] Figure 2 is a schematic diagram of the spraying section;

[0058] Figure 3 is an enlarged view of point A in Figure 2;

[0059] Figure 4 is a structural schematic diagram of the swing assembly and the lifting assembly.

[0060] Explanation of reference numerals in the attached figures:

[0061] 1. Support plate; 2. Spraying assembly; 21. Liquid tank; 211. Vent; 22. Connecting pipe; 221. Telescopic rod; 23. Spray pipe; 231. Nozzle; 3. Moving assembly; 31. First moving wheel; 32. Second moving wheel; 4. Drive assembly; 41. Drive unit; 411. Support rod; 4111. Lifting groove; 412. Drive block; 4121. Connecting plate; 413. Connecting rod; 414. Drive rod; 415. Motor; 416. Battery; 42. Spraying unit; 421. Push rod; 422. Extrusion piston; 4221. Air inlet; 4222. Sealing plate; 422 3. Torsion spring; 423. Spray piston; 43. Moving part; 431. Moving rod; 432. First connecting rod; 5. Swing assembly; 51. Swing disc; 52. Swing cylinder; 53. Drive cylinder; 54. First oil pipe; 55. Second oil pipe; 56. Third oil pipe; 6. Lifting assembly; 61. Screw; 611. Handwheel; 62. Lifting block; 63. Lifting rope; 64. Lifting spring; 7. Steering assembly; 71. Handlebar; 72. Steering rod; 73. Second connecting rod; 74. Push rod; 75. Control cylinder; 751. Fourth oil pipe; 76. Push cylinder; 77. Return spring. Detailed Implementation

[0062] The present application will be further described in detail below with reference to Figures 1-4.

[0063] This application discloses a pesticide spraying device. Referring to FIG1, a pesticide spraying device includes a support plate 1, a spraying component 2, a moving component 3, and a driving component 4. The spraying component 2 and the moving component 3 are respectively disposed on both sides of the support plate 1. The spraying component 2 is used to spray pesticide liquid, the moving component 3 is used to move the support plate 1, and the driving component 4 is disposed on the support plate 1 and is used to drive the spraying component 2 to spray pesticide liquid and drive the moving component 3 to move the support plate 1.

[0064] In use, the drive component 4 drives the moving component 3 to move the support plate 1, and drives the spraying component 2 to spray the liquid medicine, so that the liquid medicine can be sprayed during the movement of the support plate 1, thereby reducing the labor intensity of manual spraying of liquid medicine.

[0065] Referring to Figure 1, the support plate 1 is rectangular and horizontally positioned. The spraying assembly 2 includes a liquid tank 21, a connecting pipe 22, and two spray nozzles 23. The liquid tank 21 is fixed to the top surface of the support plate 1, and is rectangular and vertically positioned. The connecting pipe 22 is located on one side of the liquid tank 21 and is circular. The connecting pipe 22 is horizontally positioned, and its middle part is connected to the bottom of the liquid tank 21 via a pipe. The middle part of the connecting pipe 22 is connected to the support plate 1 via a support member.

[0066] Two nozzles 23 are located at opposite ends of the connecting pipe 22. Both nozzles 23 are vertically arranged and connected to the connecting pipe 22 at their middle sections. Both nozzles 23 are rectangular tubes and are curved in an arc shape, moving away from each other. Multiple nozzles 231 are connected to the opposite side of each nozzle 23. The nozzles 231 are evenly arranged along the extension direction of the nozzle 23, and their axial direction is perpendicular to the tangent direction of the nozzle 23.

[0067] The moving component 3 includes two first moving wheels 31 and two second moving wheels 32. Both first moving wheels 31 and two moving wheels 32 are provided and are provided on the bottom surface of the support plate 1. The two first moving wheels 31 and the two second moving wheels 32 are respectively located at the four top corners of the support plate 1. The two first moving wheels 31 are arranged facing each other, and the two second moving wheels 32 are arranged facing each other. The first moving wheels 31 and the two moving wheels 32 are arranged sequentially along the traveling direction of the support plate 1, and the first moving wheels 31 are arranged closer to the nozzle 23, while the second moving wheels 32 are arranged away from the nozzle 23.

[0068] The drive assembly 4 includes a drive unit 41, a spraying unit 42, and a moving unit 43. The drive unit 41 includes a support rod 411, a drive block 412, a connecting rod 413, a drive rod 414, and a motor 415. The support rod 411 is a circular rod and is vertically mounted on the top surface of the support plate 1. The support rod 411 is located on the side of the liquid tank 21 away from the spray pipe 23 and is rotatably connected to the support plate 1. The drive block 412 is a rectangular block and is sleeved on the support rod 411. The drive block 412 is slidably connected to the support rod 411, and the sliding direction is the axial direction of the support rod 411.

[0069] A connecting plate 4121 is provided on the side of the drive block 412 away from the support plate 1. The connecting plate 4121 is rectangular and horizontally positioned. The connecting plate 4121 is sleeved on the support rod 411 and slidably connected to the support rod 411. The connecting plate 4121 and the drive block 412 are rotatably connected around the axis of the support rod 411. The connecting rod 413 is rectangular, and one end of its length is hinged to the side of the connecting plate 4121 away from the drive block 412. The drive rod 414 is rectangular, and one end of its length is hinged to the end of the connecting rod 413 away from the connecting plate 4121. The motor 415 is fixedly connected to the top of the support rod 411, and the output shaft of the motor 415 is fixedly connected to the end of the drive rod 414 away from the connecting rod 413. The motor 415 is electrically connected to a battery 416, which is fixedly mounted on the support plate 1.

[0070] Referring to Figures 1 and 2, the spraying unit 42 includes a push rod 421, a squeezing piston 422, and a spraying piston 423. The push rod 421 is rectangular and both ends are bent at 90° to the same side. A rectangular vent hole 211 is provided at the top of the liquid tank 21. The vent hole 211 penetrates the wall thickness of the liquid tank 21. One end of the push rod 421 is fixed to the drive block 412, and the other end is inserted into the liquid tank 21 through the vent hole 211.

[0071] Referring to Figure 2, both the squeezing piston 422 and the spraying piston 423 are rectangular plates and are horizontally arranged. Both the squeezing piston 422 and the spraying piston 423 are slidably arranged in the liquid tank 21 and are arranged in sequence along the vertical direction. The sliding direction of both the squeezing piston 422 and the spraying piston 423 is vertical and is adapted to the cross section of the liquid tank 21 along the vertical direction. There is a gap between the squeezing piston 422 and the spraying piston 423. The top surface of the squeezing piston 422 is fixedly connected to the end of the push rod 421 away from the drive rod 414.

[0072] Referring to Figure 3, a rectangular air inlet 4221 is provided on the top surface of the extrusion piston 422, penetrating the thickness of the extrusion piston 422. A sealing plate 4222 is provided over the air inlet 4221. The sealing plate 4222 is rectangular and has an area larger than that of the air inlet 4221. The sealing plate 4222 is located on the side of the extrusion piston 422 near the spray piston 423, and one end is hinged to the extrusion piston 422 via a hinge shaft. A torsion spring 4223 is fitted on the hinge shaft between the sealing plate 4222 and the extrusion piston 422. One end of the torsion spring 4223 is fixedly connected to the sealing plate 4222, and the other end is fixedly connected to the extrusion piston 422. The torsion spring 4223 is used to drive the sealing plate 4222 to adhere to the extrusion piston 422.

[0073] Referring to Figure 1, the moving part 43 includes a moving rod 431 and a first connecting rod 432. The moving rod 431 is rectangular and one end in the length direction is hinged to the bottom end of the drive block 412. The moving rod 431 is located on the side of the support rod 411 away from the push rod 421 and slides through the clearance groove opened on the support plate 1. The first connecting rod 432 is circular and bent into a rectangle in the middle. The two ends of the first connecting rod 432 are coaxially fixed to the two second moving wheels 32 and are rotatably connected to the bottom surface of the support plate 1. The bent part in the middle of the first connecting rod 432 is hinged to the end of the moving rod 431 away from the drive block 412.

[0074] In use, the motor 415 is started, driving the drive rod 414 to rotate. The drive rod 414 pushes the connecting rod 413 to swing. The connecting rod 413 drives the drive block 412 to slide back and forth through the connecting plate 4121. The drive block 412 drives the push rod 421 to move and drives the moving rod 431 to swing. The push rod 421 drives the squeezing piston 422 to slide. When the squeezing piston 422 slides close to the spraying piston 423, the torsion spring 4223 drives the sealing plate 4222 to seal the air inlet 4221 through its elastic force. The squeezing piston 422 drives the spraying piston 423 to slide through the air pressure. The spraying piston 423 sprays the liquid medicine from the nozzle 231 through the connecting pipe 22 and the spray pipe 23. On crops, the arc-shaped nozzle 23 allows the pesticide to be sprayed synchronously onto both sides of the crop leaves. When the squeezing piston 422 slides away from the spraying piston 423, the air pressure opens the sealing plate 4222, allowing air to fill between the squeezing piston 422 and the spraying piston 423. This allows the squeezing piston 422 to drive the spraying piston 423 to squeeze the pesticide during the reciprocating sliding process, thus enabling the pesticide to be sprayed automatically. The moving rod 431 drives the middle curved part of the first connecting rod 432 to rotate. The first connecting rod 432, supported by the support plate 1, drives the second moving wheel 32 to rotate, enabling the support plate 1 to move automatically, thereby reducing the labor intensity of manual spraying of pesticides.

[0075] Referring to Figure 1, the support is a telescopic rod 221. The telescopic rod 221 is vertically arranged and connected to the support plate 1. The movable end of the telescopic rod 221 is located at its top and is fixedly connected to the middle of the connecting pipe 22. The telescopic rod 221 is in the shape of a circular rod.

[0076] Referring to Figure 4, a swing assembly 5 is provided on the support plate 1. The swing assembly 5 includes a swing disk 51, a swing cylinder 52, and a drive cylinder 53. The swing disk 51 is circular and located between the telescopic rod 221 and the support plate 1. The swing disk 51 is coaxially fixed to the telescopic rod 221 and rotatably connected to the support plate 1. Two swing cylinders 52 are provided, located on both sides of the swing disk 51 and symmetrically arranged about the central axis of the support plate 1 along the length direction. The swing cylinders 52 are hinged to the support plate 1, and the movable end of the swing cylinder 52 is hinged to the side wall of the swing disk 51. The drive cylinder 53 is located near the support rod 411 and below the drive block 412. The drive cylinder 53 is vertically arranged and fixed to the support plate 1. The movable end of the drive cylinder 53 is fixed to the drive block 412.

[0077] A first oil pipe 54 connects the rodless chamber of the drive cylinder 53 to the rodless chamber of one of the swing cylinders 52, and hydraulic oil flows through the first oil pipe 54; a second oil pipe 55 connects the rod chamber of the drive cylinder 53 to the rodless chamber of the other swing cylinder 52, and hydraulic oil flows through the second oil pipe 55; a third oil pipe 56 connects the rod chambers of the two swing cylinders 52, and hydraulic oil flows through the third oil pipe 56.

[0078] In use, the drive block 412 drives the drive cylinder 53 to reciprocate. When the drive cylinder 53 retracts, the hydraulic oil in its rodless chamber is squeezed through the first oil pipe 54 into the rodless chamber of the swing cylinder 52. The swing cylinder 52 extends and squeezes the hydraulic oil in its rod chamber into the rod chamber of another swing cylinder 52 through the third oil pipe 56. The other swing cylinder 52 retracts and squeezes the hydraulic oil in its rodless chamber into the rod chamber of the drive cylinder 53 through the second oil pipe 55. The two swing cylinders 52 drive the swing disk 51 to rotate. The swing disk 51 drives the spray pipe 23 to swing through the telescopic rod 221 and the connecting pipe 22. Conversely, when the drive cylinder 53 extends, the two swing cylinders 52 drive the swing disk 51 to rotate in opposite directions, so that the spray pipe 23 can swing back and forth, making the spraying of the liquid more uniform.

[0079] Referring to Figure 4, a lifting assembly 6 is provided between the support rod 411 and the telescopic rod 221. The lifting assembly 6 includes a screw 61, a lifting block 62, a lifting rope 63, and a lifting spring 64. A rectangular lifting groove 4111 is opened at the top of the support rod 411 along its own axis. The screw 61 is located in the lifting groove 4111 and is rotatably connected to the support rod 411. A handwheel 611 is coaxially fixed at the top of the screw 61. The lifting block 62 is slidably disposed in the lifting groove 4111 along the axis of the support rod 411. The lifting block 62 is rectangular and its cross-section is adapted to the opening direction of the lifting groove 4111. The lifting block 62 is sleeved on the screw 61 and is threadedly connected to the screw 61.

[0080] The lifting rope 63 is a steel wire rope. One end of the lifting rope 63 slides through the bottom of the lifting groove 4111 and is fixedly connected to the lifting block 62. The other end of the lifting rope 63 passes through the bottom of the rodless cavity of the telescopic rod 221 and is fixedly connected to the movable end of the telescopic rod 221. The lifting spring 64 is located in the rodless cavity of the telescopic rod 221. One end of the lifting spring 64 is fixedly connected to the telescopic rod 221, and the other end is fixedly connected to the movable end of the telescopic rod 221. The lifting spring 64 is used to drive the movable end of the telescopic rod 221 to extend.

[0081] In use, turn the handwheel 611, which drives the screw 61 to rotate. The screw 61 drives the lifting block 62 to slide. The lifting block 62 and the lifting spring 64 work together to drive the lifting rope 63 to slide relative to the support rod 411 and the telescopic rod 221. Under the combined force of the lifting spring 64 and the tension of the lifting rope 63, the telescopic rod 221 can extend and retract, making it easy to adjust the height of the connecting pipe 22.

[0082] Referring to Figures 1 and 4, the support rod 411 is connected to a steering assembly 7 for driving the first moving wheel 31 to change its direction of movement. The steering assembly 7 includes a handlebar 71, a steering rod 72, and a second connecting rod 73. The handlebar 71 is fixed to the end of the support rod 411 away from the support plate 1 and is located on the side of the support rod 411 away from the push rod 421. The steering rod 72 is a circular rod and is rotatably mounted on the support plate 1. The steering rod 72 is located near the first moving wheel 31 and is connected to the end of the support rod 411 near the support plate 1 via a chain drive. The support rod 411 is rotatably connected to the support plate 1. The second connecting rod 73 is a circular rod and is located between the two first moving wheels 31. The two ends of the second connecting rod 73 are rotatably connected to the two first moving wheels 31 on the same axis. The middle part of the second connecting rod 73 is fixedly connected to the bottom end of the steering rod 72.

[0083] Referring to Figure 4, two push rods 74 are symmetrically fixed on the steering rod 72. The push rods 74 are rectangular rods and their length direction is perpendicular to the axis of the steering rod 72. When the rolling direction of the first moving wheel 31 is parallel to the length direction of the support plate 1, the two push rods 74 are symmetrically arranged about the central axis of the support plate 1 along the length direction.

[0084] Two control cylinders 75, each corresponding to a push rod 74, are fixed on the support plate 1. The two control cylinders 75 are symmetrically arranged about the central axis of the support plate 1 along its length. The movable end of the control cylinder 75 faces the push rod 74, and its extension and retraction direction is parallel to the length direction of the support plate 1.

[0085] Referring to Figures 3 and 4, a push cylinder 76 is fixed on the side wall of the air inlet 4221. The movable end of the push cylinder 76 faces the sealing plate 4222. A fourth oil pipe 751 is connected between the rodless chamber of the control cylinder 75 and the rodless chamber of the push cylinder 76, and hydraulic oil flows through the fourth oil pipe 751.

[0086] When the steering lever 72 is not turning, the control cylinder 75 is in the fully extended state, and there is a gap between the movable end of the control cylinder 75 and the push rod 74. The push cylinder 76 is in the fully retracted state, and the movable end of the push cylinder 76 is located in the air inlet 4221. A return spring 77 is provided in the rod cavity of the push cylinder 76. One end of the return spring 77 is fixedly connected to the push cylinder 76, and the other end is fixedly connected to the movable end of the push cylinder 76. The return spring 77 is used to drive the push cylinder 76 to fully retract.

[0087] In use, turning the handlebar 71 causes the support rod 411 to rotate. The support rod 411 drives the steering rod 72 to rotate via chain transmission. The steering rod 72 drives the second connecting rod 73 to rotate. The second connecting rod 73 drives the two first moving wheels 31 to change their direction of movement, thus making the direction of movement of the support plate 1 easy to adjust. The steering rod 72 drives the push rod 74 to swing. The push rod 74 pushes its corresponding control cylinder 75 to retract. The control cylinder 75 squeezes hydraulic oil into the push cylinder 76. The hydraulic oil drives the push cylinder 76 to extend. The push cylinder 76 opens the sealing plate 4222, so that the air inlet 4221 is always open. This allows the support plate 1 to automatically stop spraying the liquid medicine when turning, thus saving the use of liquid medicine.

[0088] The implementation principle of a pesticide spraying device according to an embodiment of this application is as follows: When in use, the motor 415 is started. The motor 415 drives the drive block 412 to slide back and forth through the drive rod 414 and the connecting rod 413. The drive block 412 drives the push rod 421 to move and drives the moving rod 431 to swing. The push rod 421 drives the spraying piston 423 to slide through the squeeze piston 422. The spraying piston 423 sprays the pesticide from the nozzle 231 onto the crops. The moving rod 431 drives the second moving wheel 32 to rotate through the first connecting rod 432. The second moving wheel 32 drives the support plate 1 to move. Thus, the spraying of the pesticide and the movement of the pesticide tank 21 can both be achieved by the driving force of the motor 415, reducing the labor intensity of manual spraying of pesticides.

[0089] The drive block 412 drives the drive cylinder 53 to extend and retract. The drive cylinder 53 drives the swing disk 51 to rotate through two swing cylinders 52. The swing disk 51 drives the spray pipe 23 to swing, making the spraying of the liquid more uniform. The handwheel 611 is turned, and the handwheel 611 drives the lifting block 62 to slide through the screw 61. The lifting block 62 drives the lifting rope 63 to slide. The lifting rope 63 and the lifting spring 64 drive the telescopic rod 221 to extend and retract, so that the height of the connecting pipe 22 can be easily adjusted. The handlebar 71 is turned, and the handlebar 71 drives the support rod 411 to rotate. The support rod 411 drives the steering rod 72 to rotate through the chain drive. The steering rod 72 drives the first moving wheel 31 to change the direction of movement through the second connecting rod 73, so that the direction of movement of the support plate 1 can be easily adjusted.

[0090] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pesticide spraying device, characterized in that, include: The support plate (1) spraying assembly (2) includes a liquid tank (21) fixed on one side of the support plate (1), a connecting pipe (22) connected to the liquid tank (21) in the middle, and two spray pipes (23) connected to the two ends of the connecting pipe (22) in the middle. The connecting pipe (22) is supported on the support plate (1) by a support member. The two spray pipes (23) are curved in an arc shape in a direction away from each other. Multiple nozzles (231) are connected to the side of the two spray pipes (23) that are away from each other. The moving assembly (3) includes a first moving wheel (31) and a second moving wheel (32). The first moving wheel (31) and the second moving wheel (32) are connected to each other. Two wheels (32) are provided for each support plate (1) and are located on the side away from the liquid tank (21). The first moving wheel (31) and the second moving wheel (32) are located at both ends of the support plate (1) and are arranged sequentially along the traveling direction of the support plate (1). A drive assembly (4) is provided on the side of the support plate (1) near the liquid tank (21) and is used to drive the liquid in the liquid tank (21) to spray and drive the two second moving wheels (32) to rotate. The drive assembly (4) includes: a drive unit (41), including a support rod (411) provided on the support plate (1) and a sliding device. The system includes a drive block (412) mounted on the support rod (411), a connecting rod (413) connected to the drive block (412), a drive rod (414) hinged to the connecting rod (413), and a motor (415) connected to the drive rod (414) and fixed on the support rod (411); a spraying part (42) connected between the liquid tank (21) and the drive block (412), used to drive the liquid in the liquid tank (21) to flow to the nozzle (231); and a moving part (43) connected between the second moving wheel (32) and the drive block (412), used to drive the second moving wheel (32) to the nozzle (411). 32) Rotation; The spraying part (42) includes: a push rod (421), one end of which is fixedly connected to the drive block (412), and the other end of which is inserted into the medicine tank (21) through the vent hole (211) on the medicine tank (21); a squeeze piston (422), which is slidably disposed in the medicine tank (21) and fixedly connected to the end of the push rod (421) inserted into the medicine tank (21); a spraying piston (423), which is slidably disposed in the medicine tank (21) and located on the side of the squeeze piston (422) away from the push rod (421), and a gap is left between the spraying piston (423) and the squeeze piston (422);The compression piston (422) has an air inlet (4221), and a sealing plate (4222) covers the air inlet (4221). The sealing plate (4222) is located on the side of the compression piston (422) near the spray piston (423). The sealing plate (4222) is hinged to the compression piston (422), and a torsion spring (4223) is provided between the sealing plate (422) and the compression piston (422) to drive itself to adhere to the compression piston (422).

2. The pesticide spraying device according to claim 1, characterized in that, The moving part (43) includes: a moving rod (431), one end of which is hinged to the driving block (412); a first connecting rod (432), both ends of which are coaxially fixed to the two second moving wheels (32), and both ends are rotatably connected to the support plate (1). The middle part of the first connecting rod (432) is bent into a rectangle, and the bent part is hinged to the end of the moving rod (431) away from the driving block (412).

3. The pesticide spraying device according to claim 1, characterized in that, The support plate (1) is provided with a swing assembly (5) for driving the nozzle (23) to swing back and forth.

4. The pesticide spraying device according to claim 3, characterized in that, The swing assembly (5) includes: a swing disk (51), fixed on the support member and coaxially arranged with the support member, the swing disk (51) being rotatably connected to the support plate (1); two swing cylinders (52), respectively located on both sides of the swing disk (51), the swing cylinders (52) being hinged to the support plate (1), the movable end of the swing cylinders (52) being hinged to the side wall of the swing disk (51); and a drive cylinder (53), connected to the support plate (1). The movable end of the drive cylinder (53) is fixedly connected to the drive block (412); wherein, the rodless chamber of the drive cylinder (53) and the rodless chamber of one of the swing cylinders (52) are connected by hydraulic oil through a first oil pipe (54), the rod chamber of the drive cylinder (53) and the rodless chamber of the other swing cylinder (52) are connected by hydraulic oil through a second oil pipe (55), and the rod chambers of the two swing cylinders (52) are connected by hydraulic oil through a third oil pipe (56).

5. A pesticide spraying device according to claim 1, characterized in that, The support is a telescopic rod (221), which is connected to the support plate (1). The movable end of the telescopic rod (221) is fixedly connected to the connecting pipe (22). A lifting assembly (6) is provided between the telescopic rod (221) and the support rod (411). The lifting assembly (6) is used to drive the telescopic rod (221) to extend or retract.

6. A pesticide spraying device according to claim 5, characterized in that, The lifting assembly (6) includes: a screw (61), which is disposed in the lifting groove (4111) opened along the axial direction of the support rod (411) and is rotatably connected to the support rod (411); a lifting block (62), which is slidably disposed in the lifting groove (4111) and sleeved on the screw (61), and the lifting block (62) is threadedly connected to the screw (61); a lifting rope (63), one end of which slides into the lifting groove (4111) and is fixedly connected to the lifting block (62), and the other end slides into the rodless cavity of the telescopic rod (221) and is fixedly connected to the movable end of the telescopic rod (221); and a lifting spring (64), which is fixedly disposed in the rodless cavity of the telescopic rod (221) and is used to drive the movable end of the telescopic rod (221) to extend.

7. The pesticide spraying device according to claim 1, characterized in that, The support rod (411) is connected to a steering assembly (7) for driving the first moving wheel (31) to change its direction of movement. The steering assembly (7) includes: a handlebar (71) fixed at one end of the support rod (411) away from the support plate (1); a steering rod (72) rotatably passing through the support plate (1) and connected to the end of the support rod (411) near the support plate (1) via a chain drive; the support rod (411) is rotatably connected to the support plate (1); a connecting plate (4121) is rotatably connected to the drive block (412); the connecting plate (4121) is slidably connected to the support rod (411) and hinged to the connecting rod (413); and a second connecting rod (73) with both ends rotatably connected to the two first moving wheels (31) on the same axis and fixed to the steering rod (72) in the middle.

8. A pesticide spraying device according to claim 7, characterized in that, Two push rods (74) are symmetrically fixed on the steering rod (72). Two control cylinders (75) corresponding to the push rods (74) are fixed on the support plate (1). A push cylinder (76) is fixed on the side wall of the air inlet (4221). The movable end of the push cylinder (76) faces the sealing plate (4222). The rodless chamber of the control cylinder (75) is connected to the rodless chamber of the push cylinder (76) through the fourth oil pipe (751). Hydraulic oil flows through the fourth oil pipe (751). When the steering rod (72) is not turned, the control cylinder (75) is in a fully extended state, and the push cylinder (76) is in a fully retracted state. A return spring (77) for driving the push cylinder (76) to fully retract is fixed in the rod chamber of the push cylinder (76).

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