Pesticide spraying machine

Abstract

The utility model discloses a pesticide spraying machine which comprises a walking frame, a motor, a front wheel shaft, a rear wheel shaft and a clutch mechanism are installed on the walking frame, the clutch mechanism comprises a driving lever, a driving lever shaft, an elastic force application handle and a handle limiting seat, the driving lever shaft is installed on the walking frame in a rotating mode, and the elastic force application handle is installed on the driving lever shaft. The shifting rod is fixed to the shifting rod shaft and abuts against the sliding gear, the handle limiting seat is fixed to the walking frame and provided with a handle limiting groove, one end of the elastic force application handle is fixed to the shifting rod shaft, and the other end of the elastic force application handle is restrained in the handle limiting groove. The pesticide spraying machine disclosed by the utility model is simple in structure, low in cost and safe and reliable to use, the clutch mechanism cannot be damaged due to overexertion of an operator in the clutch operation process, and the pesticide spraying machine can adapt to tracks with different track gauges and different heights on the left side and the right side, and even can smoothly move forwards through the arc-shaped supporting spring in a water channel; and the adaptability to greenhouses is good.

Description

Technical Field

[0001] This utility model relates to the field of sprayer technology, and in particular to a sprayer for use in greenhouses. Background Technology

[0002] Spraying pesticides has always been the biggest challenge in greenhouse cultivation. Various spraying machines that replace manual labor have emerged, but they are still far from meeting people's expectations for an economical and convenient solution. In recent years, with the widespread use of various suspension additives, it has become possible to use a sprayer to atomize the pesticide on one side of the greenhouse and then use a fan to blow the mist into the greenhouse to kill pests and diseases on crops.

[0003] Chinese utility model patent CN214629373U discloses a self-propelled sprayer that can spray while moving along one side of a greenhouse, with a fan blowing the spray throughout the entire greenhouse. It is convenient to use and saves labor. However, this sprayer has the following problems:

[0004] On the one hand, once spraying begins, the greenhouse is filled with mist, making it impossible for personnel to enter and operate. Spraying typically requires the sprayer to move to the far end of the greenhouse, then reverse while spraying, finally returning to the starting point. When pushing the sprayer to the far end, its slow speed makes allowing it to move on its own extremely time-consuming. Installing a high-ratio gearbox would be prohibitively expensive and bulky. Forcing the sprayer to move would cause the motor to rotate at high speed, creating significant resistance and potentially damaging the motor. A clutch mechanism could solve this problem, but known clutch mechanisms, such as friction plate clutches, are generally complex and expensive.

[0005] On the other hand, when sprayers are operating, they typically utilize the simple tracks of existing transport vehicles in the greenhouse. Driving on these tracks eliminates the need for directional control. However, due to differences in construction period and load-bearing design, the track gauge varies significantly (ranging from 20 to 50 centimeters), making it difficult for sprayers to adapt to different tracks. Furthermore, not all greenhouses have such transport tracks. In some areas, a wide, flat-bottomed irrigation ditch is built along one side of the greenhouse, with edges on both sides containing holes or gates. This ditch serves as the daily management passage, and its width varies considerably. In other areas, a wide passage is simply left inside the greenhouse, without any irrigation ditch or track, which poses a significant challenge to the sprayer's ability to automatically follow a predetermined route.

[0006] In addition, transfer wheels are installed on the walking frame to facilitate towing and transportation. When it is necessary to transfer, it can be towed like a small trailer. During spraying operations, although the transfer wheels are higher than the track wheels and do not rub against the ground, the width of the transfer wheels generally exceeds the main body of the sprayer. During operation, in some cases, they may interfere with the debris on both sides of the track. The design needs to be optimized to avoid conflict with the components on both sides of the track.

[0007] On the other hand, once the spraying operation starts, the greenhouse is filled with fog, making it impossible for personnel to enter to operate (such as adding pesticide). Since the size of greenhouses varies greatly, one tank of pesticide is sufficient for small greenhouses, while large greenhouses may require two tanks. It is necessary to design a stable pesticide container platform. How to conveniently and securely place two pesticide tanks and make them connect well for use, and how to ensure that the large pesticide container platform does not affect the turning, handling and transfer of the spraying machine, are also problems that need to be solved. Utility Model Content

[0008] In view of this, the technical problem to be solved by this utility model is to provide a sprayer that improves the reliability of the clutch mechanism between the motor and the wheel axle with a simple structure and lower cost.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0010] A sprayer includes: a walking frame, a motor, a front axle, a rear axle, and a clutch mechanism mounted on the bottom of the walking frame. The front axle is driven by the motor, and a drive gear is driven through the output shaft of the motor. A sliding gear is driven through the front axle, and a return spring is sleeved on the front axle. The sliding gear abuts against the return spring. The clutch mechanism works together with the return spring to control the engagement and disengagement of the sliding gear with the drive gear. The clutch mechanism includes a lever, a lever shaft, a force-applying handle, and a handle limiting seat. The lever shaft is rotatably mounted on the walking frame, the lever is fixed to the lever shaft and abuts against the sliding gear, and the handle limiting seat is fixed to the walking frame and has a handle limiting groove. One end of the force-applying handle is fixed to the lever shaft, and the other end is constrained within the handle limiting groove.

[0011] Preferably, the force-applying handle is an elastic force-applying handle.

[0012] Preferably, the elastic force-applying handle is made of a torsion spring, the elastic force of the torsion spring is greater than the elastic force of the return spring, the torsion spring is sleeved on the lever shaft, one end of the torsion spring is connected to the lever shaft, and the other end forms a torsion handle, the end of the torsion handle is constrained in the handle limiting groove.

[0013] Preferably, the handle limiting groove includes a sliding groove for the torsion handle to rotate and a retaining groove for limiting the torsion handle to a fixed position.

[0014] Preferably, the rear wheel axle is hinged to the chassis.

[0015] Preferably, a transmission device is provided between the front wheel axle and the rear wheel axle.

[0016] Preferably, the front axle and the rear axle are respectively provided with axially adjustable track wheels, and one end of the walking frame is detachably mounted with a transfer wheel axle, on which transfer wheels are mounted.

[0017] Preferably, one end of the front axle and the rear axle are detachably connected to an extension rod, and the extension rod is provided with a wide-rail wheel.

[0018] Preferably, the front axle and the rear axle are provided with walking wheels, and the four corners of the walking frame are detachably connected with arc-shaped support springs.

[0019] Preferably, the walking frame is provided with a main medicine tank platform, and a foldable auxiliary medicine tank platform is provided on one side of the main medicine tank platform, the auxiliary medicine tank platform being higher than the main medicine tank platform.

[0020] After adopting the above technical solution, the beneficial effects of this utility model are:

[0021] The sprayer disclosed in this utility model features a clutch mechanism comprising a lever, a lever shaft, a spring-loaded handle, and a handle limiting seat. The lever shaft is rotatably mounted on the traveling frame, the lever is fixed to the lever shaft and abuts against the sliding gear, and the handle limiting seat is fixed to the traveling frame and has a handle limiting groove. One end of the force-applying handle is fixed to the lever shaft, and the other end is constrained within the handle limiting groove. During clutch operation, rotating the force-applying handle causes the lever to move the sliding gear, compressing the return spring and constraining the force-applying handle within the handle limiting groove, thus maintaining the sliding gear and drive gear in engagement. To disengage, simply disengage the force-applying handle from the handle limiting groove; under the action of the return spring, the sliding gear and drive gear disengage. This clutch mechanism is simple in structure, safe and reliable in use, and low in cost, making it ideal for applications where clutch operation is required when the sprayer is stationary.

[0022] In this invention, the force-applying handle is an elastic one, such as a torsion spring. During clutch operation, if the gear teeth align, the operating force will only increase slightly, and the torsion spring's handle will still engage as intended. At this point, whether the machine is shaken or the motor is started, the gears will automatically mesh under the force of the torsion spring after a slight rotation. Therefore, the clutch mechanism will not be damaged due to excessive force applied by the operator during clutch operation.

[0023] In this invention, the axial position of the track wheels on the front and rear axles is adjustable. When the actual track gauge differs slightly from the standard track gauge, the wheel gauge can be adjusted by changing the axial installation position of the track wheels. When the actual track gauge differs significantly from the standard track gauge, an extension rod is connected to the ends of the front and rear axles. This creates a larger wheel gauge between the track wheels on the extension rod and those on the front or rear axles, thus effectively accommodating differences in track gauge.

[0024] In this invention, the rear wheel axle is hinged to the walking frame, and the left and right ends of the rear wheel axle swing up and down, which can automatically adapt to the unevenness of the tracks on both sides.

[0025] In this utility model, a transfer wheel axle is detachably installed at one end of the walking frame, and a transfer wheel is installed on the transfer wheel axle. When it is necessary to transfer, the transfer wheel axle is installed on the walking frame, and it can be towed like a small trailer. During operation, the transfer wheel axle is removed to avoid conflict with the components on both sides of the track.

[0026] In this utility model, the four corners of the walking frame are detachably connected with arc-shaped support springs. When there is no transport track in the greenhouse but a water channel is set up, the arc-shaped support springs have a long contact distance with the edge of the channel and are elastic, so that they can cross water holes, gates, etc., and play a guiding role, thereby enabling the sprayer to walk smoothly along the water channel.

[0027] In this invention, the walking frame is equipped with a main pesticide tank platform, and a foldable auxiliary pesticide tank platform is provided on one side of the main pesticide tank platform. The auxiliary pesticide tank platform is higher than the main pesticide tank platform. When the sprayer is moved or when spraying is carried out in a small shed, the auxiliary pesticide tank platform can be removed. When spraying is carried out in a large shed, the auxiliary pesticide tank platform is placed, the main pesticide tank is placed on the main pesticide tank platform, and the auxiliary pesticide tank is placed on the auxiliary pesticide tank platform. The auxiliary pesticide tank platform is higher than the main pesticide tank platform, which is conducive to the series use of the main pesticide tank and the auxiliary pesticide tank. The pesticide liquid in the auxiliary pesticide tank flows completely into the main pesticide tank.

[0028] In summary, the sprayer disclosed in this utility model has a simple structure and low cost. It is safe and reliable to use during machine movement. During clutch operation, the clutch mechanism will not be damaged due to excessive force by the operator. It is very suitable for use in situations where the sprayer needs to perform clutch operation when the machine is stationary. Moreover, it can adapt to tracks with different gauges and different heights on the left and right sides. It can even move smoothly in water channels through the arc-shaped support spring. It has good adaptability to greenhouses. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the sprayer of this utility model;

[0030] Figure 2 yes Figure 1 Top view of the upper part of the traveling frame;

[0031] Figure 3 yes Figure 1 A schematic diagram of the clutch control mechanism.

[0032] Figure 4 This is a top view of the upper part of the walking frame device of Embodiment 2 of the present invention sprayer;

[0033] In the picture:

[0034] 1. Walking frame; 10. Vertical support; 11. Handrail; 12. Transfer wheel; 13. Main medicine tank platform; 14. Auxiliary medicine tank platform; 15. Front axle; 16. Track wheel; 17. Rear axle; 18. Chain drive; 19. Transfer wheel axle; 21. Main medicine tank; 22. Auxiliary medicine tank; 23. Water supply pipe; 3. Motor; 31. Drive gear; 4. Clutch mechanism; 41. Sliding gear; 42. Lever; 43. Lever shaft; 44. Torsion spring; 45. Handle limit seat; 451. Handle limit groove; 46. Return spring; 51. Extension rod; 52. Wide track wheel; 53. Walking wheel; 54. Arc-shaped support spring; 6. Air pump; 61. Air supply pipe; 7. Fan; 71. Air supply pipe; 72. Mist outlet; 73. Support rod frame; 8. Atomizing nozzle. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0036] Example 1

[0037] like Figure 1As shown, a sprayer for pesticide application includes a liquid supply system, an air supply system, and an air delivery system mounted on a walking frame 1. The liquid supply system includes a water pump (not shown), a main pesticide tank 21, and a secondary pesticide tank 22. The air supply system includes an air pump 6. The air delivery system includes a fan 7 and a mist outlet 72. An atomizing nozzle 8 is fixedly installed inside the mist outlet 72. The atomizing nozzle 8 is connected to the water supply pipe 23 of the liquid supply system and the air supply pipe 61 of the air supply system. A vertical support 10 is mounted on the walking frame 1. The pesticide tanks (including the main pesticide tank 21 and the secondary pesticide tank 22) and the air pump 6 are located on opposite sides of the vertical support 10. The air pump 6 and the fan 7 are fixed side by side to the walking frame 1. The air inlet of the fan 7 faces the air pump 6. The mist outlet 72 is connected to the air outlet of the fan 7 via an air delivery pipe 71. To position the mist outlet 72 appropriately, a flexible pipe is used for the air delivery pipe 71. There are many types of fans 7. Centrifugal fans have air inlets that are more conducive to heat dissipation for the air pump, and their air outlets are also more conducive to connecting to the mist outlet 72 via the air supply pipe 71. A pull rod handle 11 is provided on the upper part of the vertical support 10. The pull rod handle 11 is preferably a telescopic pull rod handle for easy height adjustment. The mist outlet 72 is fixed to the vertical support 10 or the pull rod handle 11 via a support frame 73, allowing the mist to diffuse upwards. The angle and height of the mist outlet 72 can be easily adjusted and fixed via the support frame 73.

[0038] like Figure 1 and Figure 2 As shown, the bottom of the walking frame 1 is equipped with a motor 3, a front wheel axle 15, a rear wheel axle 17, and a clutch mechanism 4. The front wheel axle 15 is driven by the motor 3. The output shaft of the motor 3 is connected to a drive gear 31. The front wheel axle 15 is connected to a sliding gear 41. A return spring 46 is sleeved on the front wheel axle 15. The sliding gear 41 abuts against the return spring 46. The clutch mechanism 4 and the return spring 46 work together to control the engagement and disengagement of the sliding gear 41 with the drive gear 31.

[0039] In this embodiment, the front axle 15 and the rear axle 17 are connected by a chain drive 18. Of course, they can also be connected by other drive devices, such as a belt drive, so that both the front axle 15 and the rear axle 17 become drive axles. Alternatively, no drive device can be provided, and the motor 3 can drive either the front axle 15 or the rear axle 17 independently, forming a front-drive or rear-drive structure.

[0040] In this embodiment, the rear wheel axle 17 is hinged to the walking frame 1, and the rear wheel axle 17 can swing up and down at both ends to automatically adapt to the unevenness of the tracks on both sides.

[0041] In this embodiment, in order to facilitate the axial movement of the sliding gear 41 and the adjustment of the axial position of the track wheel 16 and to transmit torque, the front wheel axle 15 is preferably a prismatic shaft, such as a quadrangular shaft or a hexagonal shaft. Correspondingly, the connecting hole between the sliding gear 41 and the track wheel 16 should also be a quadrangular hole or a hexagonal hole. When the rear wheel axle 17 is also a drive shaft, it is also preferably a prismatic shaft. When the rear wheel axle 17 is a driven shaft, the track wheel 16 can be rotatably mounted on the rear wheel axle 17, and the track wheel 16 can slide axially on the rear wheel axle 17 to adapt to changes in track gauge.

[0042] The clutch mechanism 4 includes a lever 42, a lever shaft 43, a force-applying handle, and a handle limiting seat 45. The lever shaft 43 is rotatably mounted on the traveling frame 1. The lever 42 is fixed to the lever shaft 43 and abuts against the sliding gear 41. The handle limiting seat 45 is fixed to the traveling frame 1 and is provided with a handle limiting groove 451. One end of the elastic force-applying handle is fixed to the lever shaft 43, and the other end is constrained in the handle limiting groove 451.

[0043] To prevent damage to the clutch mechanism due to excessive force applied by the operator during operation, the force application handle should preferably be set to a flexible force application handle, such as... Figure 2 and Figure 3 As shown, in this embodiment, the elastic force-applying handle is composed of a torsion spring 44. The elastic force of the torsion spring 44 is greater than that of the return spring 46. The torsion spring 44 is sleeved on the lever shaft 43. One end of the torsion spring 44 is connected to the lever shaft 43, and the other end forms a torsion handle. The end of the torsion handle is constrained within the handle limiting groove 451. The handle limiting groove 451 includes a sliding groove for the torsion handle to rotate and a retaining groove for limiting the torsion handle to a fixed position.

[0044] When performing clutch operation, rotating the torsion spring 44 causes the lever 42 to move the sliding gear 41, compressing the return spring 46. Even if the gear teeth are aligned, the operating force will only increase slightly. Due to elastic deformation, the torsion spring's handle will still engage in the slot as planned. At this point, whether the sprayer is shaken or the motor is started, the gear will automatically engage under the force of the torsion spring 44 after a slight rotation. When the handle disengages from the slot, the sliding gear 41 disengages from the drive gear 31 under the action of the return spring 46. This clutch mechanism has a simple structure and low cost. It is safe and reliable to use during machine movement. During clutch operation, because the force-applying handle uses an elastic force-applying handle (specifically, the structure of the torsion spring 44), the clutch mechanism will not be damaged by excessive force applied by the operator. It is very suitable for use when the sprayer is stationary and clutch operation is required.

[0045] like Figure 2 As shown, the front axle 15 and the rear axle 17 are respectively equipped with axially adjustable track wheels 16, and one end of the traveling frame 1 is detachably mounted with a transfer wheel axle 19 (see...). Figure 1 and Figure 3The transfer wheel axle 19 is equipped with transfer wheels 12. When transfer is required, the transfer wheel axle 19 is installed on the traveling frame 1, and it can be towed like a small trailer; during operation, the transfer wheel axle 19 is removed to avoid conflict with the components on both sides of the track.

[0046] like Figure 2 As shown, one end of the front axle 15 and the rear axle 17 are detachably connected to an extension rod 51, and a wide-rail wheel 52 is provided on the extension rod 51. Preferably, the extension rod 51 is threadedly connected to the front axle 15 and the rear axle 17.

[0047] In this embodiment, the axial position of the track wheel 16 on the front axle 15 and the rear axle 17 is adjustable. When the actual track gauge differs slightly from the standard track gauge, the track gauge can be adjusted by adjusting the axial installation position of the track wheel 16. When the actual track gauge differs significantly from the standard track gauge, the extension rod 51 is connected to the ends of the front axle 15 and the rear axle 17. The wide-gauge track wheel 52 on the extension rod 51 and the track wheel 16 on the front axle 15 or the rear axle 17 form a larger track gauge, thus effectively adapting to differences in track gauge.

[0048] like Figure 1 As shown, in this embodiment, the walking frame 1 is equipped with a main pesticide tank platform 13, and a foldable auxiliary pesticide tank platform 14 is provided on one side of the main pesticide tank platform 13. The auxiliary pesticide tank platform 14 is higher than the main pesticide tank platform 13. When the sprayer is moved or when spraying in a small shed, the auxiliary pesticide tank platform 14 can be removed for easy movement. When spraying in a large shed, the auxiliary pesticide tank platform 14 is placed, the main pesticide tank 21 is placed on the main pesticide tank platform 13, and the auxiliary pesticide tank 22 is placed on the auxiliary pesticide tank platform 14. The auxiliary pesticide tank platform 14 is higher than the main pesticide tank platform 13, which is conducive to the series use of the main pesticide tank 21 and the auxiliary pesticide tank 22, and the pesticide liquid in the auxiliary pesticide tank 22 flows completely into the main pesticide tank 21.

[0049] In this embodiment, the motor 3 can be powered by an external power source, a battery, or a generator. When using a generator, a trailer (not shown in the figure) needs to be attached to the walking frame 1 and the generator placed on the trailer.

[0050] Example 2

[0051] like Figure 4As shown, the structure of this embodiment is basically the same as that of Embodiment 1, except that the track wheels 16 are replaced with ordinary walking wheels 53 on the front wheel axle 15 and the rear wheel axle 17, and arc-shaped support springs 54 are detachably connected to the four corners of the walking frame 1. The arc-shaped support springs 54 are fixed to the four corners of the walking frame 1 with set screws. Loosening the set screws can adjust the width of the arc-shaped support springs 54. This structure is specially designed to adapt to water channels. When there is no transport track in the greenhouse but a water channel is set up, the arc-shaped support springs 54 have a long contact distance with the edge of the channel and are elastic, so they can cross water holes, gates, etc., and play a guiding role, thereby enabling the sprayer to move smoothly along the water channel.

[0052] Alternatively, if only a level path is available, a thin steel wire or rope can be stretched close to the ground. Two pulleys can be installed on one side of the sprayer, and the steel wire can be secured between the two pulleys, acting as a track. Moreover, installing a steel wire inside the greenhouse, even permanently, generally will not cause any obstacles.

[0053] This utility model is not limited to the above embodiments. All improvements made based on the concept, principle, structure and method of this utility model shall fall within the protection scope of this utility model.

Claims

1. A sprayer for applying pesticides, comprising: A traveling frame, wherein a motor, a front axle, a rear axle, and a clutch mechanism are mounted on the bottom of the traveling frame. The front axle is driven by the motor, and a drive gear is driven through the output shaft of the motor. A sliding gear is driven through the front axle, and a return spring is sleeved on the front axle. The sliding gear abuts against the return spring. The clutch mechanism and the return spring work together to control the engagement and disengagement of the sliding gear with the drive gear. The clutch mechanism includes a lever, a lever shaft, a force-applying handle, and a handle limiting seat. The lever shaft is rotatably mounted on the traveling frame. The lever is fixed to the lever shaft and abuts against the sliding gear. The handle limiting seat is fixed to the traveling frame and is provided with a handle limiting groove. One end of the force-applying handle is fixed to the lever shaft, and the other end is constrained in the handle limiting groove.

2. The sprayer as described in claim 1, characterized in that, The force-applying handle is an elastic force-applying handle.

3. The sprayer as described in claim 2, characterized in that, The elastic force-applying handle is made of a torsion spring, the elastic force of which is greater than that of the return spring. The torsion spring is sleeved on the lever shaft, one end of which is connected to the lever shaft, and the other end forms a torsion handle. The end of the torsion handle is constrained within the handle limiting groove.

4. The sprayer as described in claim 3, characterized in that, The handle limiting groove includes a sliding groove for the torsion handle to rotate and a retaining groove for limiting the torsion handle to a fixed position.

5. The sprayer as described in claim 1, characterized in that, The rear wheel axle is hinged to the chassis.

6. The sprayer as described in claim 1, characterized in that, A transmission device is provided between the front wheel axle and the rear wheel axle.

7. The sprayer as described in claim 1, characterized in that, The front axle and the rear axle are respectively provided with axially adjustable track wheels, and a transfer wheel axle is detachably installed at one end of the walking frame, with transfer wheels installed on the transfer wheel axle.

8. The sprayer as described in claim 7, characterized in that, One end of the front axle and the rear axle are detachably connected to an extension rod, and the extension rod is equipped with a wide-rail wheel.

9. The sprayer as described in claim 1, characterized in that, The front and rear axles are equipped with wheels, and the four corners of the walking frame are detachably connected with arc-shaped support springs.

10. The sprayer as described in claim 1, characterized in that, The walking frame is equipped with a main medicine tank platform, and a foldable auxiliary medicine tank platform is provided on one side of the main medicine tank platform. The auxiliary medicine tank platform is higher than the main medicine tank platform.

Images