Mother trolley of pesticide sprayer

Abstract

The utility model discloses a mother vehicle of a pesticide spraying machine, which belongs to the technical field of pesticide spraying equipment and comprises a vehicle frame, a pesticide liquid supply system is mounted on the vehicle frame and comprises a water pump, a travel switch and a liquid level switch, the water pump is used for pumping pesticide liquid in a pesticide barrel and supplying the pesticide liquid to a pesticide spraying trolley, and the travel switch is connected with the liquid level switch. The travel switch and the liquid level switch are arranged on a liquid medicine supply station of the frame and are respectively and electrically connected with an electric control unit for controlling the water pump, and the liquid level switch is arranged on a control rocker arm of the travel switch. Only when the pesticide spraying trolley is located at the pesticide liquid supply station and the liquid level switch does not detect the pesticide liquid, the water pump can be started to convey pesticide to the pesticide box of the pesticide spraying trolley, and the water pump cannot be started repeatedly when the trolley leaves the mother trolley, so that the pesticide liquid output by the liquid conveying pipeline can be prevented from being sprayed outside the pesticide box of the trolley, and waste and pollution are reduced; and the complexity of the control system is simplified.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of pesticide spraying equipment, and particularly relates to a pesticide spraying machine mother vehicle. BACKGROUND

[0002] Greenhouse pesticide spraying is the most laborious and health-harming work for vegetable farmers. In order to reduce the harm to the farmers' bodies, pesticide spraying machines are used for pesticide spraying. Due to the limited planting distance of the greenhouse and the uneven ground, personnel can only pass through with difficulty. The existing greenhouse pesticide spraying machine is composed of a mother vehicle and a pesticide spraying trolley. The mother vehicle walks on the main road of the greenhouse, and the pesticide spraying trolley is small in size and completely separated from the mother vehicle. The pesticide spraying trolley can suck pesticide liquid from the large pesticide tank of the mother vehicle multiple times and then spray pesticide in the ridges of the greenhouse row by row. The effect is ideal, the pesticide spraying machine is easy to move, and the pesticide spraying machine is more suitable for being used in different greenhouses in turn.

[0003] Chinese patent CN212087772U discloses a greenhouse pesticide spraying machine mother vehicle. The vehicle is provided with a trolley bearing platform and a trolley drawbridge. The trolley drawbridge and the bearing platform can share the same shaft or can be provided with two adjacent shafts. The two sides of the shaft are the trolley drawbridge and the bearing platform. The two are connected through toothed wheels, claws, and linkage devices to control the lifting and lowering of the trolley drawbridge. Specifically, the trolley drives onto the platform, the platform is lowered, the linkage device is driven to lift the claws, and the drawbridge is also lifted synchronously. However, in actual application, it is found that there is inevitably a certain gap between the parts of the linkage device. The platform is lowered in an axial rotation manner, and the part close to the shaft has a very limited rotation and lowering range, which may cause the linkage device to have an insufficient action range and the claws to be unable to be normally lifted.

[0004] In addition to bearing the trolley up and down and walking, the pesticide spraying machine mother vehicle has a particularly important function of detecting the amount of pesticide in the trolley tank and adding pesticide liquid. The process of adding pesticide liquid is generally that the trolley tank touches the liquid level switch installed on the mother vehicle, the sensor senses the decrease of the liquid level of the tank, and then the mother vehicle pesticide pump starts to add pesticide. When the liquid level reaches a certain value, the pesticide pump stops working. The work of the water pump must also meet one condition, that is, the trolley is stopped at a specified position. The most economical and reliable solution to determine the position of the trolley is still to use a travel switch, that is, the trolley or the trolley tank must touch the travel switch and the liquid level switch at the same time, and the travel switch and the liquid level switch must work at the same time. When the trolley comes to the mother vehicle, the time when the travel switch and the liquid level switch are connected is slightly different, which is not a problem. However, when the trolley leaves, the liquid level switch is non-contact, and the liquid level cannot be detected when the trolley is separated from the tank wall by 1 cm at most. At this time, the travel switch for determining the position of the trolley is still in the connected state, which may cause the water pump to restart. Even though the water pump will soon stop working again as the trolley continues to move forward, a part of the pesticide liquid will still be sprayed outside the tank, causing waste and pollution.

[0005] In addition, the liquid medicine in the large medicine bucket on the mother vehicle will have a precipitation phenomenon due to long working time, and if an additional stirring device is added, the process complexity and cost will be increased. Content of the utility model

[0006] The technical problem solved by the utility model is to provide a pesticide spraying machine mother vehicle, which can avoid that the liquid medicine output by the infusion pipeline is splashed outside the trolley medicine box, reduces waste and pollution, and simplifies the complexity of the control system.

[0007] To solve the above technical problem, the technical scheme of the utility model is:

[0008] A pesticide spraying machine mother vehicle comprises a vehicle frame, a liquid medicine supplementing system is installed on the vehicle frame, the liquid medicine supplementing system comprises a water pump for pumping liquid medicine in a medicine bucket to supplement a pesticide spraying trolley, the liquid medicine supplementing system further comprises a travel switch and a liquid level switch, the travel switch and the liquid level switch are arranged at a liquid medicine supplementing station of the vehicle frame, the travel switch and the liquid level switch are electrically connected with an electric control unit for controlling the water pump, and the liquid level switch is installed on a control rocker arm of the travel switch.

[0009] Further, the liquid medicine supplementing system comprises an infusion pipeline, one end of the infusion pipeline is provided with a liquid medicine supplementing port, the liquid medicine supplementing port is located at the liquid medicine supplementing station, and the other end of the infusion pipeline is provided with a liquid inlet pipe and a liquid return pipe which are arranged in parallel and extend into the medicine bucket, and the liquid inlet pipe is provided with the water pump.

[0010] Further, a first valve is arranged between the liquid inlet pipe and the liquid medicine supplementing port.

[0011] Further, a second valve is arranged between the liquid inlet pipe and the liquid return pipe.

[0012] Further, the vehicle frame is rotatably installed with a bearing platform through a second rotating shaft, an elastic supporting device is installed between the bearing platform and the vehicle frame, a trolley approach bridge is rotatably installed on the vehicle frame through a first rotating shaft, a return spring is arranged between the trolley approach bridge and the bearing platform, the first rotating shaft is coaxially connected with a rotating wheel with gear teeth, the vehicle frame is rotatably installed with a claw for being connected with or separated from the rotating wheel, the claw is controlled by the bearing platform, and the first rotating shaft and the second rotating shaft are located on the two sides of the bearing platform.

[0013] Further, the elastic supporting device is located below the bearing platform and close to the first rotating shaft.

[0014] Further, the claw comprises a claw arm and a control arm, the bearing platform is provided with a sliding groove, and a free end of the control arm is constrained in the sliding groove.

[0015] The beneficial effects of the utility model are as follows:

[0016] In the pesticide spraying machine mother vehicle, the travel switch and the liquid level switch are arranged at the liquid supplement station of the vehicle frame, the liquid level switch is installed at the control rocker arm of the travel switch, only when the pesticide spraying trolley is at the liquid supplement station and the liquid level switch does not detect the liquid, the water pump will start to supply the pesticide tank of the pesticide spraying trolley, and the water pump will not start repeatedly when the trolley leaves the mother vehicle, so that the liquid output by the liquid supply pipeline can be prevented from being splashed outside the pesticide tank of the trolley, waste and pollution are reduced, and the complexity of the control system is simplified.

[0017] In the utility model, the other end of the liquid supply pipeline is provided with a liquid inlet pipe and a liquid return pipe which extend into the medicine bucket, the water pump is arranged at the liquid inlet pipe, and when the liquid medicine is mixed, the water pump can be started and the liquid medicine can be circulated only between the liquid inlet pipe and the liquid return pipe through the switch valve, so that the liquid medicine is stirred, and when the pesticide spraying trolley is supplied with liquid medicine and normally works, most of the liquid medicine still enters the liquid return pipe for circulation, so that the precipitation phenomenon can be avoided and the liquid medicine is ensured to be mixed uniformly.

[0018] In the utility model, one side of the bearing platform is connected with the trolley approach bridge through a first rotating shaft, and the other side is installed on the vehicle frame through a second rotating shaft, so that the bearing platform has a large lifting range, and the claw can be separated from the rotating wheel in time when the pesticide spraying trolley is located on the bearing platform. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a structure schematic view of the pesticide spraying machine mother vehicle of the utility model;

[0020] Figure 2 is a structure schematic view of the trolley approach bridge of the pesticide spraying machine mother vehicle in a lowered state;

[0021] Figure 3 is Figure 2 structure schematic view of the side;

[0022] In the drawing, 1 is a mother vehicle, 11 is a vehicle frame, 12 is a bearing platform, 13 is a fixed rod, 14 is a travel switch, 141 is a control rocker arm, 15 is a liquid level switch, 2 is a trolley approach bridge, 21 is a first rotating shaft, 22 is a rotating wheel, 23 is a claw, 24 is a sliding groove, 25 is an elastic supporting device, 26 is a second rotating shaft, 3 is a medicine bucket, 31 is a liquid supply pipeline, 32 is a first valve, 33 is a clamp, 34 is a liquid inlet pipe, 35 is a water pump, 36 is a liquid return pipe, 37 is a second valve, and 4 is a pesticide spraying trolley. DETAILED DESCRIPTION

[0023] The preferred embodiments of the utility model are shown in the drawings, the drawings serve to supplement the description of the written part of the specification with graphics, enabling people to intuitively and visually understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as limiting the protection scope of the utility model.

[0024] As Figure 1 shown, a pesticide spraying machine mother car includes a frame 11, the frame 11 is installed with a pesticide liquid supply system, the pesticide liquid supply system includes a water pump 35 for extracting pesticide liquid in a pesticide barrel 3 to supply a pesticide spraying trolley 4.The pesticide liquid supply system further includes a travel switch 14 and a liquid level switch 15, the travel switch 14 and the liquid level switch 15 are arranged at a pesticide liquid supply station of the frame 11, and the travel switch 14 and the liquid level switch 15 are electrically connected with an electric control unit for controlling the water pump 35.Only when the travel switch 14 detects that the pesticide spraying trolley 4 is located at the pesticide liquid supply station and the liquid level switch 15 does not detect the liquid level, the electric control unit controls the water pump 35 to start, and continues to add pesticide until the liquid level switch 15 detects the liquid level, and the water pump 35 is turned off.The electric control unit can be a control circuit or a control chip.

[0025] When the liquid level switch 15 does not move synchronously with the control rocker arm 141 of the travel switch 14, the liquid level switch 15 will be more than 1cm away from the pesticide tank 4 of the pesticide spraying trolley 4, and the travel switch 14 will be in the combined state due to the incomplete reset of the control rocker arm 141, at this time, the liquid level switch 14 cannot detect the liquid level, which will cause the water pump 35 to restart.To avoid the problem of repeated starting of the water pump 35, as Figure 1 and Figure 3 shown, the liquid level switch 15 is installed on the control rocker arm 141 of the travel switch 14, and the liquid level switch 15 will move together with the control rocker arm 141, when the pesticide spraying trolley 4 leaves, the control rocker arm 141 will rebound, and the liquid level switch 15 will still be attached to the surface of the pesticide tank to detect the liquid level, when the liquid level switch 15 is completely separated from the pesticide tank of the pesticide spraying trolley 4, the travel switch 14 has also rebounded and powered off, ensuring that the water pump 35 of the mother car 1 will not start again.

[0026] As Figure 3 shown, the pesticide liquid supply system includes a liquid supply pipeline 31, one end of the liquid supply pipeline 31 is provided with a pesticide liquid supply port, the pesticide liquid supply port is located above the pesticide liquid supply station of the mother car 1, and the end of the liquid supply pipeline 31 with the pesticide liquid supply port is fixed to the frame 11 by a plastic clamp 33.

[0027] The other end of the infusion pipeline 31 is provided with a liquid inlet pipe 34 and a liquid return pipe 36 which extend into the medicine barrel 3, and the end of the liquid inlet pipe 34 extending into the medicine barrel 3 is provided with a water pump 35. When the water pump 35 is started, the medicine liquid entering the liquid inlet pipe 34 can be output to the medicine spraying trolley 4 through the infusion pipeline 31, or can be returned to the medicine barrel 3 through the liquid return pipe 36. The medicine liquid is quickly circulated through the liquid inlet pipe 34 and the liquid return pipe 36, so that the medicine liquid in the medicine barrel 3 is stirred uniformly.

[0028] The infusion pipeline 31 between the liquid inlet pipe 34 and the medicine liquid supplement port is provided with a first valve 32 for controlling the opening and closing of the pipeline, and the infusion pipeline 31 between the liquid inlet pipe 34 and the liquid return pipe 36 is provided with a second valve 37 for controlling the opening and closing of the pipeline. When the medicine barrel 3 starts to dispense medicine, the first valve 32 is closed and the second valve 37 is opened, and the water pump 35 is started to stir the medicine liquid in the medicine barrel 3 uniformly. During the medicine dispensing process, only the first valve 32 can be opened to supply medicine to the medicine spraying trolley 4; or a water pump 35 with larger power can be configured, and the first valve 32 and the second valve 37 are opened at the same time. The water pump 35 supplies medicine to the medicine spraying trolley 4, and at the same time, another water flow returns to the medicine barrel 3, which plays a role of continuously stirring the medicine liquid and avoids the situation that the medicine barrel 3 has precipitates.

[0029] As shown in Figs. 1 and 2, Figure 1 and Figure 2 As shown in Figs. 1 and 2, The elastic supporting device 25 can be a spring leaf or a spring. In the drawings of the present application, a spring is exemplified.

[0030] The first rotating shaft 21 is coaxially connected with a rotating wheel 22 having gear teeth, the frame 11 is rotatably installed with a claw 23 for clamping or separating with the rotating wheel 22, and the claw 23 is controlled by the carrying platform 12. The claw 23 includes a claw arm and a control arm, and the middle part of the claw arm and the control arm is hinged to the frame 11. The carrying platform 12 is provided with a sliding groove 24, and the free end of the control arm is constrained in the sliding groove 24. When the carrying platform 12 moves vertically, the free end of the control arm will slide along the sliding groove 24, so that the claw 23 rotates around the position hinged to the frame 11.

[0031] When the pesticide spraying trolley 4 is located on the bearing platform 12, the claw 23 is separated from the rotating wheel 22, and when the pesticide spraying trolley 4 drives away, the trolley guide bridge 2 is pushed down, and after the pesticide spraying trolley 4 leaves the bearing platform 12, the bearing platform 12 is lifted under the action of the elastic supporting device 25, the free end of the control arm of the claw 23 slides in the sliding groove 24 to rotate the claw 23, and the end of the claw arm is clamped on the rotating wheel 22. When the pesticide spraying trolley 4 drives onto the bearing platform 12 again, the bearing platform 12 is compressed and falls under the elastic supporting device 25, the claw 23 is separated from the rotating wheel 22, and the trolley guide bridge 2 is automatically lifted under the action of the torsion spring.

[0032] Preferably, the rotating wheel 22 is a ratchet wheel or a gear, and the claw 23 is a pawl or a stopper, and the end of the claw arm is preferably provided with a plurality of gear teeth.

[0033] In the application, the first rotating shaft 21 and the second rotating shaft 26 are respectively located on both sides of the bearing platform 12, the bearing platform 12 has a large lifting range, and the claw 23 can be separated from the rotating wheel 22 when the pesticide spraying trolley 4 is located on the bearing platform 12. The elastic supporting device 25 is located below the bearing platform 12 and close to the first rotating shaft 21, and can maximize the compression and release of elastic energy.

[0034] The pesticide spraying machine mother vehicle of the utility model sets up travel switch and liquid level switch at the liquid medicine supply station of the vehicle frame, only when the travel switch detects that the pesticide spraying trolley is at the specified position and the liquid level switch does not detect liquid medicine, the water pump will start to supply liquid medicine to the medicine tank of the pesticide spraying trolley, the liquid level switch is installed on the control rocker arm of the travel switch, can effectively avoid that the liquid medicine output by the liquid medicine supply pipeline is splashed outside the trolley medicine tank, reduces waste and pollution, and simplifies the complexity of the control system.

[0035] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0036] In the description of the present application, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, and the skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0037] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that the described embodiments are only part of the embodiments of the utility model, not all the embodiments, which are only examples, and the protection scope of the utility model is defined by the claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the utility model, and without any creative labor, but these changes and modifications all fall within the protection scope of the utility model.

Claims

1. A pesticide spraying machine mother vehicle, comprising: a vehicle frame, wherein a pesticide liquid supply system is installed on the vehicle frame, and the pesticide liquid supply system comprises a water pump for extracting pesticide liquid in a pesticide barrel to supply a pesticide spraying trolley, characterized in that: the pesticide liquid supply system further comprises a travel switch and a liquid level switch, the travel switch and the liquid level switch are arranged at a pesticide liquid supply station of the vehicle frame, the travel switch and the liquid level switch are electrically connected with an electric control unit for controlling the water pump, and the liquid level switch is installed on a control rocker arm of the travel switch.

2. The vehicle of claim 1, wherein, the pesticide liquid supply system comprises a liquid supply pipeline, one end of the liquid supply pipeline is provided with a pesticide liquid supply port, the pesticide liquid supply port is located at the pesticide liquid supply station, and the other end of the liquid supply pipeline is provided with a liquid inlet pipe and a liquid return pipe which are arranged in parallel and extend into the pesticide barrel, and the liquid inlet pipe is provided with the water pump.

3. The applicator mother cart of claim 2, wherein, a first valve is arranged between the liquid inlet pipe and the pesticide liquid supply port.

4. The applicator mother cart of claim 3, wherein, a second valve is arranged between the liquid inlet pipe and the liquid return pipe.

5. The vehicle according to any one of claims 1 to 4, wherein the vehicle frame is rotatably installed with a bearing platform through a second rotating shaft, an elastic support device is installed between the bearing platform and the vehicle frame, a trolley approach bridge is rotatably installed on the vehicle frame through a first rotating shaft, a return spring is arranged between the trolley approach bridge and the bearing platform, the first rotating shaft is coaxially connected with a rotating wheel with gear teeth, the vehicle frame is rotatably installed with a claw for engaging or separating with the rotating wheel, the claw is controlled by the bearing platform, and the first rotating shaft and the second rotating shaft are located on both sides of the bearing platform.

6. The applicator cart of claim 5, wherein, the elastic support device is located below the bearing platform and close to the first rotating shaft.

7. The vehicle of claim 5, wherein, the claw comprises a claw arm and a control arm, the bearing platform is provided with a sliding groove, and a free end of the control arm is constrained in the sliding groove.

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