An orchard plant protection machine suitable for small plant spacing

Abstract

The present invention discloses an orchard plant protection machine suitable for small plant spacings, which includes a plant protection machine body, a medicine box device and a pesticide atomization air delivery device successively located behind the plant protection machine body, and a clutch mechanism fixedly located on the plant protection machine body. The whole vehicle is slender; the medicine box device can generate high pressure on the nozzles of the pesticide atomization air delivery device to atomize the pesticide; the pesticide atomization air delivery device can generate strong air flow to spray the atomized pesticide along with the strong air flow; the plant protection machine body includes an engine and a commutator. The clutch mechanism and the engine are longitudinally arranged in sequence on the frame of the plant protection machine body, and the medicine pump of the medicine box device is in the same row as the commutator; the output end of the engine is connected to the main rotating shaft of the commutator; the first driven rotating shaft of the commutator is connected to the medicine pump; the second driven rotating shaft of the commutator is connected to the pesticide atomization air delivery device; the clutch mechanism can transmit or cut off the connection between the output end of the engine and the main rotating shaft for a long time; through the present invention, the pesticide spraying effect can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of orchard management, and specifically provides an orchard plant protection machine suitable for small plant spacing. Background Art

[0002] For the plant protection operation in orchard management, it mainly involves spraying pesticides or foliar fertilizers on the fruit trees in the orchard. Fruit trees are mostly planted on mountains with complex and uneven terrains. Generally, most plant protection machines are equipped with four-wheel walking mechanisms. Since the plant protection machine needs to carry pesticides and spraying devices, the overall machine is "front-light and rear-heavy". When climbing slopes, conventional four-wheel walking mechanisms are prone to vehicle rollover.

[0003] The existing Chinese invention patent with the publication number of CN115056985A, a 5G fully automatic unmanned aerial vehicle (UAV) agricultural sowing and spraying system, conducts spraying operations through UAVs. Although it is not affected by terrain, the operation efficiency of a single UAV operation is relatively low, the amount of pesticides carried at one time is small, and it is necessary to make multiple round trips to replenish pesticides. In addition, the pesticides sprayed in the air are greatly affected by natural winds.

[0004] The existing Chinese invention patent with the publication number of CN111084171A, an air-assisted atomization system using pulse width modulation to control the fan speed, by setting multiple groups of atomization devices, each group of atomization devices is equipped with a fan, to achieve real-time adjustment of the spraying angles and air volumes of different groups. However, the penetration power of the pesticides after spraying is relatively weak, and the fan power is relatively small, unable to provide sufficient power. For fruit trees with large plant spacing and lush branches and leaves, the pesticide spraying effect is poor.

[0005] Currently, the plant protection machines on the market include three power parts in the overall vehicle power section, which provide power for the whole vehicle, the medicine box, and the spraying device respectively. However, with such a setting, in addition to increasing the volume of the plant protection machine, the corresponding fuel consumption also increases correspondingly, increasing the usage cost. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to address the issues that the existing orchard plant protection machines have weak penetration power when spraying pesticides on fruit trees with small plant spacing and multiple power devices for the whole vehicle, increasing the usage cost.

[0007] To solve the above technical problems, the present invention provides the following technical solutions:

[0008] An orchard plant protection machine suitable for small plant spacings, comprising a plant protection machine body 100, a medicine box device 200 and a pesticide atomization air delivery device 300 that are successively located behind the plant protection machine body 100, and a clutch mechanism 400 fixedly located on the plant protection machine body 100; the medicine box device 200 can generate high pressure on the nozzle 340 of the pesticide atomization air delivery device 300 to atomize the pesticide; the pesticide atomization air delivery device 300 can generate a strong air current to spray the atomized pesticide along with the strong air current;

[0009] The plant protection machine body 100 includes an engine 110 and a commutator 120. The clutch mechanism 400, the engine 110 and the commutator 120 are longitudinally arranged in sequence on the frame 102 of the plant protection machine body 100, and the medicine pump 210 of the medicine box device 200 is in the same row as the commutator 120; the output end of the engine 110 is connected to the main rotating shaft 121 of the commutator 120 and is arranged in the same direction; the first secondary rotating shaft 122 of the commutator 120 is connected to the output shaft of the medicine pump 210 and is arranged in the same direction; the second secondary rotating shaft 123 of the commutator 120 is connected to the pesticide atomization air delivery device 300; the clutch mechanism 400 can transmit or cut off the connection between the output end of the engine 110 and the main rotating shaft 121 for a long time;

[0010] The internal components of the plant protection machine body 100, as well as the layout of the carried medicine box device 200 and the pesticide atomization air delivery device 300, make the whole vehicle slender.

[0011] Advantages: The pesticide atomization air delivery device can generate a strong air current, making the atomized pesticide have stronger penetration, more uniform spraying and better atomization effect. The present invention can use one engine to provide power for the whole vehicle, including walking, medicine pump and air delivery, with low fuel consumption and convenient maintenance. Through the clutch mechanism, the transmission connection between the engine and the main rotating shaft can be flexibly cut off or connected during the transmission process, enabling the user to put the plant protection machine body, the medicine box device and the pesticide atomization air delivery device into the working state at the same time according to the work needs, or only the plant protection machine body is in the working state while the medicine box device and the pesticide atomization air delivery device are in the non-working state. The internal components of the plant protection machine itself, the medicine box device, the pesticide atomization air delivery device and the clutch mechanism are longitudinally arranged, making the whole vehicle slender and more suitable for operating on fruit trees with small plant spacings.

[0012] In an embodiment of the present invention, the pesticide atomizing and air-sending device 300 includes a front baffle 310, a rear baffle 320, and a deflector 330 located between the front baffle 310 and the rear baffle 320; a plurality of the deflectors 330 form a plurality of air outlets 3120 on both sides of the front baffle 310 and the rear baffle 320; a plurality of the nozzles 340 are respectively located in the plurality of air outlets 3120 and are connected to the medicine box device 200 through pipes.

[0013] In an embodiment of the present invention, the pesticide atomizing and air-sending device 300 further includes a fan assembly 350; one end of the fan transmission shaft 301 of the pesticide atomizing and air-sending device 300 is connected to the second secondary rotating shaft 123 by a belt, and the other end sequentially passes through the front baffle 310 and the rear baffle 320 and is connected to the fan assembly 350.

[0014] In an embodiment of the present invention, the surface of the front baffle 310 opposite to the rear baffle 320 is in an arc cone shape; an air cylinder 321 is provided on the rear baffle 320, and the fan assembly 350 is located in the air cylinder 321.

[0015] In an embodiment of the present invention, the deflector 330 includes a first deflector 331, a second deflector 332, and a third deflector 333; the first deflector 331 and the second deflector 332 are respectively fixedly located at the upper end of the front baffle 310 and the lower end of the rear baffle 320; a plurality of the third deflectors 333 are respectively located on both sides of the front baffle 310 and the rear baffle 320 to form a plurality of the air outlets 3120 for air diversion; the first deflector 331 and the second deflector 332 block the air flow from flowing out from the upper end and the lower end, and deflect the air flow to be discharged from the air outlets 3120.

[0016] In an embodiment of the present invention, the using method of the medicine box device 200 and the pesticide atomizing and air-sending device 300 includes the following steps:

[0017] The rotation of the engine 110 drives the rotation of the main rotating shaft 121, indirectly drives the rotation of the first secondary rotating shaft 122 and the medicine pump 210 of the medicine box device 200, and the rotation of the second secondary rotating shaft 123 and the fan transmission shaft 301; the fan transmission shaft 301 drives the fan of the fan assembly 350 to rotate at a high speed to generate an air flow;

[0018] The air flow is compressed into a strong air flow through the air cylinder 321 of the rear baffle 320; the strong air flow impacts on the front baffle 310 after passing through the rear baffle 320 and is compressed again to improve the penetration power of the strong air flow; the strong air flow enters the air outlet 3120 through the arc cone surface of the front baffle 310, and a plurality of deflectors 330 segment the strong air flow to ensure the stability of the direction of the strong air flow;

[0019] Under the action of the medicine pump 210, the plurality of nozzles 340 generate high pressure to atomize the pesticide, and the atomized pesticide is sprayed on the fruit trees along with a strong airflow.

[0020] In one embodiment of the present invention, the clutch mechanism 400 includes a first fixed frame 410, a second fixed frame 420, a handle 430, a tensioning assembly 440 and a pull wire 450; the first fixed frame 410 is fixed in the cab 101 of the plant protection machine body 100; one end of the handle 430 is hinged to the first fixed frame 410 and connected to one end of the pull wire 450; the second fixed frame 420 is fixed on the frame 102 of the plant protection machine body 100, and is close to the engine 110 and the main shaft 121; the tensioning assembly 440 is hinged to the second fixed frame 420, and the other end of the pull wire 450 is fixed to the tensioning assembly 440.

[0021] In one embodiment of the present invention, a first limiting rod 411, a second limiting rod 412 and a connecting piece 413 are provided at one end of the first fixing frame 410; the movable range of the handle 430 is located between the first limiting rod 411 and the second limiting rod 412; the connecting piece 413 is coaxially connected to the handle 430; and the pull wire 450 is fixedly connected to the connecting piece 413.

[0022] In one embodiment of the present invention, the tensioning assembly 440 includes a tensioning arm 441, a tensioning wheel 442 and a spring 443; one end of the tensioning arm 441 is hinged to the second fixed frame 420; the tensioning wheel 442 and one end of the spring 443 are connected to the other end of the tensioning arm 441, and are respectively located on two side surfaces of the tensioning arm 441; the tensioning wheel 442 is used to tension the transmission belt between the output end of the engine 110 and the main shaft 121, and the other end of the spring 443 is fixedly connected to the pull wire 450.

[0023] In one embodiment of the present invention, the method for using the clutch mechanism 400 comprises the following steps:

[0024] When the handle 430 is pulled up to the limit point formed by the first limit rod 411, the linkage drives the connecting piece 413 to rotate clockwise, and the connecting piece 413 drives the pull wire 450 to pull the spring 443, and finally pulls the tensioning arm 441 to make the tensioning wheel 442 tighten the transmission belt between the output end of the engine 110 and the main shaft 121; so that the output end of the engine 110 and the main shaft 121 rotate synchronously; the rotation of the main shaft 121 drives the first slave shaft 122 and the second slave shaft 123 to rotate;

[0025] When the handle 430 is pushed downward to the limit point formed by the second limit rod 412, it drives the connecting piece 413 to rotate counterclockwise. The cable 450 is in a relaxed state and does not exert a pulling force on the tensioning assembly 440. The tensioning wheel 442 no longer tightens the transmission belt between the output end of the engine 110 and the main rotating shaft 121. At this time, under the action of the belt stop point, the transmission belt separates from the output end of the engine 110, and finally the output end of the engine 110 and the main rotating shaft 121 are separated during the movement state, and the synchronous rotation stops.

[0026] In an embodiment of the present invention, the plant protection machine body 100 further includes a mechanical gearbox 130, a mechanical speed control lever 140, and a mechanical direction control lever 150. The mechanical gearbox 130 is connected to the engine 110. The mechanical speed control lever 140 and the mechanical direction control lever 150 are respectively connected to the mechanical gearbox 130. The mechanical speed control lever 140 is used for the vehicle to shift gears, and the mechanical direction control lever 150 can control the drive shaft 131 on the mechanical gearbox 130 to stop rotating.

[0027] In an embodiment of the present invention, the plant protection machine body 100 is provided with a crawler-type walking mechanism.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: The plant protection machine body is provided with a crawler-type walking mechanism, which can better adapt to terrains such as depressions, wetlands, hills, and mountains. Even on sunny days after rain, it can enter the field for spraying immediately. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 Schematic diagram of an orchard plant protection machine suitable for small plant spacing according to an embodiment of the present invention.

[0030] Figure 2 and Figure 3 Schematic diagram of the plant protection machine body according to an embodiment of the present invention.

[0031] Figures 4 to 7 Schematic diagram of the pesticide atomization air-blowing device according to an embodiment of the present invention.

[0032] Figures 8 to 10 Schematic diagram of the clutch mechanism according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] To facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings of the specification.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] See also Figure 1 and Figure 2 As shown, the present invention provides an orchard plant protection machine suitable for small plant spacing, including a plant protection machine body 100, a medicine box device 200 and a pesticide atomizing air delivery device 300 sequentially located behind the plant protection machine body 100, and a clutch mechanism 400 fixed on the plant protection machine body 100. The medicine box device 200 can make the nozzle 340 on the pesticide atomizing air delivery device 300 generate high pressure to atomize the pesticide, and the pesticide atomizing air delivery device 300 can generate a strong airflow to spray the atomized pesticide with the strong airflow. The plant protection machine body 100 includes an engine 110 and a commutator 120, and the clutch mechanism 400, the engine 110 and the commutator 120 are sequentially arranged longitudinally on the frame 102 of the plant protection machine body 100, and the medicine pump 210 of the medicine box device 200 and the commutator 120 are in the same row. The output end of the engine 110 is connected to the main shaft 121 of the commutator 120, and is arranged in the same direction. The first slave shaft 122 of the commutator 120 is connected to the output shaft of the medicine pump 210 and is arranged in the same direction. The second slave shaft 123 of the commutator 120 is connected to the pesticide atomizing air delivery device 300, and the clutch mechanism 400 can connect the output end of the engine 110 with the main shaft 121 or cut off the transmission connection for a long time. The internal components of the plant protection machine body 100, as well as the layout of the medicine box device 200 and the pesticide atomizing air delivery device 300 carried by it, make the whole vehicle slender. Among them, in this embodiment, the range of the small plant spacing is 3 to 4.5 meters.

[0036] See also Figures 1 to 3As shown, in an embodiment of the present invention, the plant protection machine body 100 further includes a mechanical gearbox 130, a mechanical gearshift lever 140, and a mechanical direction control lever 150. The mechanical gearbox 130 is connected to the engine 110 and is longitudinally arranged with the engine 110 on the frame 102. The mechanical gearshift lever 140 is connected to the mechanical gearbox 130, and the mechanical gearshift lever 140 is used for shifting gears of the vehicle. Among them, the plant protection machine body 100 adopts a crawler-type walking arrangement. The mechanical direction control lever 150 is connected to the mechanical gearbox 130. A drive wheel 132 is provided on the drive shaft 131 of the mechanical gearbox 130. The drive wheel 132 drives the crawler 161 to rotate. By controlling the stop of the drive shaft 131 through the mechanical direction control lever 150, the whole vehicle can move, stop, or turn. Adopting a crawler-type structure enables the plant protection machine to have advantages such as anti-slip, anti-sinking, and being good at climbing slopes, and can better adapt to terrains such as depressions, wetlands, hills, and mountains. Even on sunny days after rain, it can enter the field to spray pesticides immediately.

[0037] Please refer to Figures 1 to 3 As shown, in an embodiment of the present invention, the medicine tank device 200 includes a medicine pump 210, a medicine tank body 220, and a water return tank (not shown in the figure). The medicine pump 210 is connected to the first secondary rotating shaft 122 by a belt. The medicine pump 210 has an inlet (not shown in the figure) and two outlets (not shown in the figure). Among them, the inlet is pipe-connected to the bottom of the medicine tank body 220 and is equipped with a filter (not shown in the figure) to prevent the nozzle 340 from being blocked. One of the two outlets of the medicine pump 210 is pipe-connected to the water return stirrer (not shown in the figure) of the medicine tank body 220 for stirring the pesticide to prevent precipitation. The other outlet is used to be pipe-connected to the diverter (not shown in the figure) of the medicine tank body 220. Through the diverter, it is divided into two paths and is respectively pipe-connected to the nozzles 340 on both sides of the front baffle 310 to form the entire water circuit circulation. An inlet for medicine 221 is provided at the top of the medicine tank body 220, and the water return tank is pipe-connected to the medicine tank body 220. A pressure regulating component (not shown in the figure) is provided on the medicine pump 210, and the user can adjust it according to needs. If the pressure is too high, the overflow valve (not marked in the figure) on the medicine pump 210 opens to protect the medicine pump 210 from damage. The overflow valve is pipe-connected to the medicine tank body 220 to return the overflowed pesticide to the water return tank.

[0038] Please refer to Figures 1 to 7As shown, in an embodiment of the present invention, the fixed position of the medicine atomizing air delivery device 300 is at the tail of the plant protection machine body 100 and is fixedly connected to the frame 102 of the plant protection machine body 100. The medicine atomizing air delivery device 300 includes a front baffle 310, a rear baffle 320, and a deflector 330 located between the front baffle 310 and the rear baffle 320. The front baffle 310 is connected to the rear baffle 320 and there is a certain interval between the two. A plurality of deflectors 330 are located on both side edges of the front baffle 310 and the rear baffle 320 and are respectively connected to the front baffle 310 and the rear baffle 320. The plurality of deflectors 330 form a plurality of air outlets 3120 on both sides of the front baffle 310 and the rear baffle 320. A plurality of nozzles 340 are respectively located in the plurality of air outlets 3120 and are pipe-connected to the medicine tank device 200. Among them, the opposite surfaces of the front baffle 310 and the rear baffle 320 are in an arc cone shape, as shown in Figure 6 reference numeral A in the attached drawing, and a first branch main pipe 311 and a second branch main pipe 312 are provided on both sides of the other surface. A plurality of nozzles 340 fixedly located on both sides of the front baffle 310 are respectively pipe-connected to the first branch main pipe 311 and the second branch main pipe 312, and the first branch main pipe 311 and the second branch main pipe 312 are respectively pipe-connected to the flow divider of the medicine tank body 220.

[0039] Please refer to Figures 1 to 7 As shown, in an embodiment of the present invention, the pesticide atomizing air delivery device 300 further includes a fan assembly 350. One end of the fan transmission shaft 301 of the pesticide atomizing air delivery device 300 is belt-connected to the second secondary rotating shaft 123, and the other end sequentially passes through the front baffle 310 and the rear baffle 320 and is connected to the fan assembly 350. An air cylinder 321 is provided on the rear baffle 320, and the fan assembly 350 is located in the air cylinder 321.

[0040] Please refer to Figures 4 to 7 As shown, in an embodiment of the present invention, the deflector 330 includes a first deflector 331, a second deflector 332, and a third deflector 333. The first deflector 331 and the second deflector 332 are respectively fixedly located at the upper end of the front baffle 310 and the lower end of the rear baffle 320. The first deflector 331 and the second deflector 332 block the air flow from flowing out from the upper end and the lower end, and deflect the air flow to be discharged from the air outlet 3120. A plurality of third deflectors 333 are respectively located on both sides of the front baffle 310 and the rear baffle 320 to form a plurality of air outlets 3120 for shunting, so that the air flow is segmented, and the air flow is discharged from the air outlets 3120 to ensure the stability of the air flow direction and achieve the purpose of weakening the influence of the natural wind.

[0041] Please refer to Figures 1 to 7 As shown, in an embodiment of the present invention, the usage method of the medicine tank device 200 and the pesticide atomizing air delivery device 300 includes the following steps:

[0042] The rotation of the engine 110 drives the rotation of the main rotating shaft 121, indirectly driving the rotation of the first secondary rotating shaft 122 and the medicine pump 210 of the medicine tank device 200, as well as the rotation of the second secondary rotating shaft 123 and the fan transmission shaft 301. The fan transmission shaft 301 drives the fan 351 of the fan assembly 350 to rotate at a high speed, generating an air flow. The air flow passes through the air duct 321 of the rear baffle 320 and is compressed into a strong air flow. After passing through the rear baffle 320, the strong air flow impacts on the front baffle 310 and is compressed again, improving the penetration power of the strong air flow. The front baffle 310 is arranged in an arc cone shape. When the strong air flow blows towards the front baffle 310, it passes through the arc cone shape and enters the air outlet 3120.

[0043] The strong air flow enters the air outlet 3120 after passing through the arc cone surface of the front baffle 310. The multiple guide plates 330 segment the strong air flow, ensuring the stability of the direction of the strong air flow. Under the action of the medicine pump 210, multiple nozzles 340 generate high pressure, atomizing the pesticide, and the atomized pesticide is sprayed on the fruit trees along with the strong air flow.

[0044] Please refer to Figures 1 to 10 As shown, in an embodiment of the present invention, a general plant protection machine usually has three power devices, including a power device for driving the whole vehicle to travel, a power device for driving the medicine tank and the spraying device. During operation, the fuel consumption is very high, increasing the use cost. In this embodiment, a single engine 110 provides the power for the whole vehicle, including the power for traveling, the medicine pump 210, and the air delivery of the pesticide atomization air delivery device 300. Since the power for the whole vehicle is provided by the engine 110, as long as the plant protection machine body 100 travels, it will inevitably drive the medicine tank device 200 and the pesticide atomization air delivery device 300 to work through the commutator 120. However, sometimes, we only need the plant protection machine body 100 to work, and do not need the medicine tank device 200 and the pesticide atomization air delivery device 300 to work, such as when the plant protection machine body 100 is on the way to or back from work with the medicine tank device 200 and the pesticide atomization air delivery device 300, or when water and pesticide need to be replenished to the medicine tank device 200. The existing vehicle clutch cannot be in a disengaged state for a long time. Long-term disengagement will cause the clutch to wear due to friction, resulting in the engine power of the vehicle not being fully transmitted to the driving wheels. Therefore, the clutch cannot be depressed continuously when driving the vehicle. Through the clutch mechanism 400 of this embodiment, it is possible to separate or connect the output end of the engine 110 and the main rotating shaft 121 of the commutator 120 during the transmission process, and can be cut off and separated for a long time without affecting the engine 110 from providing power for the whole vehicle to travel.

[0045] Please refer to Figures 1 to 3 and Figures 8 to 10As shown, in an embodiment of the present invention, the clutch mechanism 400 includes a first fixing frame 410, a second fixing frame 420, a handle 430, a tensioning assembly 440, and a wire 450. The first fixing frame 410 is fixedly located inside the cab 101 of the plant protection machine body 100. One end of the handle 430 is hinged to the first fixing frame 410 and is connected to one end of the wire 450. The second fixing frame 420 is fixedly located on the frame 102 of the plant protection machine body 100 and is close to the engine 110 and the main rotating shaft 121. The tensioning assembly 440 is hinged to the second fixing frame 420, and the other end of the wire 450 is fixedly connected to the tensioning assembly 440.

[0046] Please refer to Figures 1 to 3 and Figures 8 to 10 As shown, in an embodiment of the present invention, one end of the first fixing frame 410 is provided with a first limiting rod 411 and a second limiting rod 412, and the first limiting rod 411 and the second limiting rod 412 are arranged on the same side. The connection point of the handle 430 on the first fixing frame 410 is located between the first limiting rod 411 and the second limiting rod 412. A connecting piece 413 is further provided on the first fixing frame 410. The connecting piece 413 is coaxially connected to the handle 430 and is on a different side from the handle 430. The connecting piece 413 includes a first connecting piece 4131 and a second connecting piece 4132. One end of the first connecting piece 4131 is coaxially connected to the handle 430, and the other end is connected to the second connecting piece 4132. The wire 450 is fixedly connected to the second connecting piece 4132.

[0047] Please refer to Figures 1 to 3 and Figures 8 to 10 As shown, in an embodiment of the present invention, the clutch mechanism further includes an auxiliary connecting piece 460. The auxiliary connecting piece 460 is fixedly located on the first fixing frame 410 and the second fixing frame 420, and the wire 450 passes through the auxiliary connecting piece 460. The auxiliary connecting piece 460 includes a first fixing plate 461, a second fixing plate 462, and a sleeve 463. Two ends of the sleeve 463 are respectively connected to the first fixing rod 461 and the second fixing plate 462, and the wire 450 passes through the sleeve 463. The first fixing plate 461 is fixedly connected to the first fixing frame 410, and the second fixing plate 462 is fixedly connected to the second fixing frame 420. The first fixing plate 461 is on the same side as the connecting piece 413 on the first fixing plate 461.

[0048] Please refer to Figures 1 to 3 and Figures 8 to 10As shown, in an embodiment of the present invention, the tensioning assembly 440 includes a tensioning arm 441, a tensioning wheel 442, and a spring 443. One end of the tensioning arm 441 is hinged to the second fixing frame 420. One ends of the tensioning wheel 442 and the spring 443 are connected to the other end of the tensioning arm 441 and are respectively located on both side surfaces of the tensioning arm 441. The tensioning wheel 442 is used to tension the transmission belt between the output end of the engine 110 and the main rotating shaft 121. The other end of the spring 443 is fixedly connected to the wire rope 450. The second fixing plate 462 is on the second fixing frame 420 and is at a different end and on a different side from the tensioning assembly 440.

[0049] Please refer to Figures 1 to 10 As shown, in an embodiment of the present invention, the usage method of the clutch mechanism 400 includes the following steps:

[0050] When the handle 430 is pulled upward to the limit point formed by the first limiting rod 411, the linkage drives the connecting piece 413 to rotate clockwise, and the connecting piece 413 drives the wire rope 450 to pull the spring 443, that is, the front end wire rope 450 (the connecting section with the connecting piece 413) is elongated, and the corresponding rear end (the connecting section with the spring 443) is shortened. Finally, the tensioning arm 441 is pulled to tension the transmission belt between the output end of the engine 110 and the main rotating shaft 121. The output end of the engine 110 and the main rotating shaft 121 rotate synchronously, and the main rotating shaft 121 rotates to drive the first secondary rotating shaft 122 and the second secondary rotating shaft 123 to rotate. That is, the plant protection machine body 100, the medicine box device 200, and the pesticide atomization air delivery device 300 work simultaneously.

[0051] When the handle 430 is pushed downward to the limit point formed by the second limiting rod 412, it drives the connecting piece 413 to rotate counterclockwise, that is, the front end wire rope 450 is shortened, and the rear end wire rope 450 is shortened. At this time, the wire rope 450 is in a relaxed state and does not generate a pulling force on the tensioning assembly 440, and the tensioning wheel 442 no longer tensions the transmission belt between the output end of the engine 110 and the main rotating shaft 121. At this time, under the action of the belt stop point 103, the transmission belt is separated from the output end of the engine 110, and finally the output end of the engine 110 and the main rotating shaft 121 are separated during the movement state and stop rotating synchronously. That is, the plant protection machine body 100 is working, while the medicine box device 200 and the pesticide atomization air delivery device 300 are in a non-working state. The belt stop point 103 can keep the loose belt still on the output end of the engine 110 and the main rotating shaft 121, and as long as the belt is tensioned, the output end of the engine 110 and the main rotating shaft 121 can rotate synchronously.

[0052] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention, and any reference signs in the claims should not be regarded as limiting the claims involved.

[0053] The above-described embodiments merely represent the implementation manners of the invention. The protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention.

Claims

1. An orchard plant protection machine suitable for small plant spacing, characterized in that, It includes a plant protection machine body, a medicine tank device, a pesticide atomization and air-blowing device that are successively located behind the plant protection machine body, and a clutch mechanism fixedly located on the plant protection machine body; the medicine tank device can generate high pressure on the nozzles of the pesticide atomization and air-blowing device to atomize the pesticide; the pesticide atomization and air-blowing device can generate a strong air current to spray the atomized pesticide along with the strong air current. The plant protection machine body includes an engine and a commutator. The clutch mechanism, the engine, and the commutator are longitudinally arranged in sequence on the frame of the plant protection machine body, and the medicine pump of the medicine tank device is in the same row as the commutator; the output end of the engine is connected to the main rotating shaft of the commutator and is arranged in the same direction; the first secondary rotating shaft of the commutator is connected to the output shaft of the medicine pump and is arranged in the same direction; the second secondary rotating shaft of the commutator is connected to the pesticide atomization and air-blowing device; the clutch mechanism can transmit or cut off the connection between the output end of the engine and the main rotating shaft for a long time. The internal components of the plant protection machine body, as well as the layout of the carried medicine tank device and pesticide atomization and air-blowing device, make the whole vehicle slender. Among them, the clutch mechanism includes a first fixing frame, a second fixing frame, a handle, a tensioning assembly, and a wire; the first fixing frame is fixedly located in the cab of the plant protection machine body; one end of the handle is hinged to the first fixing frame and is connected to one end of the wire; the second fixing frame is fixedly located on the frame of the plant protection machine body and is close to the engine and the main rotating shaft; the tensioning assembly is hinged to the second fixing frame, and the other end of the wire is fixedly connected to the tensioning assembly. One end of the first fixing frame is provided with a first limiting rod, a second limiting rod, and a connecting piece; the moving range of the handle is between the first limiting rod and the second limiting rod; the connecting piece is coaxially connected to the handle; the wire is fixedly connected to the connecting piece. The tensioning assembly includes a tensioning arm, a tensioning wheel, and a spring; one end of the tensioning arm is hinged to the second fixing frame; one ends of the tensioning wheel and the spring are connected to the other end of the tensioning arm and are respectively located on both sides of the tensioning arm; the tensioning wheel is used to tension the transmission belt between the output end of the engine and the main rotating shaft, and the other end of the spring is fixedly connected to the wire.

2. The orchard plant protection machine applicable to small plant spacings according to claim 1, wherein The pesticide atomization and air-blowing device includes a front baffle, a rear baffle, and a deflector located between the front baffle and the rear baffle; a plurality of deflectors form a plurality of air outlets on both sides of the front baffle and the rear baffle; a plurality of nozzles are respectively located in the plurality of air outlets and are connected to the medicine tank device through pipes.

3. The orchard plant protection machine applicable to small plant spacing according to claim 2, characterized in that, The pesticide atomization and air-blowing device further includes a fan assembly; one end of the fan transmission shaft of the pesticide atomization and air-blowing device is connected to the second secondary rotating shaft through a belt, and the other end sequentially passes through the front baffle and the rear baffle and is connected to the fan assembly.

4. The orchard plant protection machine applicable to small plant spacings according to claim 3, characterized in that, The surfaces of the front baffle and the rear baffle facing each other are arc-shaped cones; a wind cylinder is provided on the rear baffle, and the fan assembly is located in the wind cylinder.

5. The orchard plant protection machine applicable to small plant spacings according to claim 4, wherein The deflector includes a first deflector, a second deflector, and a third deflector; the first deflector and the second deflector are respectively fixedly located at the upper end of the front baffle and the lower end of the rear baffle; a plurality of third deflectors are respectively located on both sides of the front baffle and the rear baffle to form a plurality of air outlets for diversion; the first deflector and the second deflector block the air flow from flowing out from the upper end and the lower end, and deflect the air flow to be discharged from the air outlets.

6. The orchard plant protection machine applicable to small plant spacings according to any one of claims 1-5, characterized in that, The usage method of the medicine tank device and the pesticide atomization and air-blowing device includes the following steps: The rotation of the engine drives the rotation of the main rotating shaft, indirectly drives the rotation of the first driven rotating shaft and the medicine pump of the medicine box device, and the rotation of the second driven rotating shaft and the fan transmission shaft; the fan transmission shaft drives the fan of the fan assembly to rotate at a high speed to generate air flow; The air flow is compressed into a strong air flow through the air duct of the rear baffle; the strong air flow impacts on the front baffle after passing through the rear baffle and is compressed again to improve the penetration power of the strong air flow; it enters the air outlet through the arc conical surface of the front baffle, and multiple guide plates divide the strong air flow into segments to ensure the stability of the direction of the strong air flow; Under the action of the medicine pump, multiple nozzles generate high pressure to atomize the pesticide, and the atomized pesticide is sprayed on the fruit trees along with the strong air flow.

7. The orchard plant protection machine applicable to small plant spacing according to claim 1, characterized in that, The usage method of the clutch mechanism includes the following steps: When the handle is pulled upward to the limit point formed by the first limit rod, the linkage drives the connecting piece to rotate clockwise, and the connecting piece drives the wire rope to pull the spring, and finally pulls the tensioning arm to make the tensioning wheel tighten the transmission belt between the output end of the engine and the main rotating shaft; make the output end of the engine and the main rotating shaft rotate synchronously; the rotation of the main rotating shaft drives the rotation of the first driven rotating shaft and the second driven rotating shaft; When the handle is pushed downward to the limit point formed by the second limit rod, it drives the connecting piece to rotate counterclockwise, the wire rope is in a relaxed state, does not generate tension on the tensioning assembly, and the tensioning wheel no longer tightens the transmission belt between the output end of the engine and the main rotating shaft; at this time, under the action of the belt stop point, the transmission belt is separated from the output end of the engine, and finally the output end of the engine and the main rotating shaft are separated during the movement state and stop rotating synchronously.

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