Agricultural and forestry spraying equipment for BELL505 type helicopter

Abstract

The utility model discloses agriculture and forestry spraying equipment for a BELL505 type helicopter. The agriculture and forestry spraying equipment is simple in overall structure, high in strength and high in bearing capacity, and pesticide pressure is guaranteed. The agriculture and forestry spraying equipment for the BELL505 type helicopter comprises a pesticide box, the pesticide box is of a rectangular box body structure, the upper surface of the pesticide box is connected with an upper cover plate, a main rib hanging lug is arranged in the middle of the upper cover plate, a hoop is arranged at the edge position of the upper cover plate, and the main rib hanging lug is used for being hung and fixed to a cargo hook hanging point of the helicopter; the hoop is used for being fixed to a skid type undercarriage of a helicopter, and pulleys are arranged at the corners of the lower surface of the pesticide box and used for walking on the ground. One side surface of the pesticide box is a mounting surface, spraying rod brackets are symmetrically arranged on the mounting surface, the spraying rod brackets are connected with spraying rods, two spraying structures are symmetrically arranged on the mounting surface, a mounting space of the spraying structures is formed between the spraying rod brackets, and the spraying structures are connected with the two ends of the spraying rods.

Description

Technical Field

[0001] The utility model relates to the technical field of helicopters, in particular to agricultural and forestry spraying equipment used for a BELL505 helicopter. Background Art

[0002] The BELL505 helicopter is a single-engine, single-rotor, light multi-purpose helicopter that can be modified according to different mission requirements and is widely used in many fields, including public affairs, official travel, private travel, and flight training, etc. Among them, the agricultural and forestry plant protection market share has reached 56% of the domestic general aviation operations, and the market demand is huge, which requires agricultural spraying equipment corresponding to the model structure.

[0003] Existing problems;

[0004] 1. Pesticides are highly corrosive and agricultural spraying equipment is easily worn out.

[0005] 2. The agricultural spraying equipment of domestic general aviation companies is often imported from abroad and is expensive. Utility Model Content

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an agricultural and forestry spraying device for a BELL505 helicopter, which has a simple overall structure, high strength, strong bearing capacity, and ensures the pressure of pesticides.

[0007] The purpose of the utility model is achieved in this way:

[0008] An agricultural and forestry spraying device for a BELL505 helicopter comprises a medicine box, the medicine box is in a rectangular box structure, the upper surface of the medicine box is connected to an upper cover plate, a main rib hanging ear is provided in the middle of the upper cover plate, a clamp is provided at the edge of the upper cover plate, the main rib hanging ear is used to be hung and fixed on a cargo hook hanging point of the helicopter, the clamp is used to be fixed on a skid-type landing gear of the helicopter, a pulley is provided at a corner of the lower surface of the medicine box, and the pulley is used to walk on the ground;

[0009] One side surface of the medicine box is a mounting surface, on which spray rod brackets are symmetrically arranged, the spray rod brackets are connected to the spray rod, two spray structures are symmetrically arranged on the mounting surface, between the spray rod brackets is an installation space for the spray structure, and the spray structure connects both ends of the spray rod.

[0010] Preferably, each spraying structure includes a drug adding port, a drug outlet port, and a reflux port respectively arranged on the mounting surface; the drug outlet port is connected to a water suction pipe, a drug pump, a water outlet pipe, and an inlet of a three-way valve in sequence; two outlets of the three-way valve are connected to a reflux pipe and a spraying pipe respectively; the reflux pipe is connected to the reflux port; the drug pump and the three-way valve are fixed on the medicine box; and the spraying pipe is connected to the spraying rod through a filter.

[0011] Preferably, the spray pipe is connected to the return pipe through a pressure relief pipe.

[0012] Preferably, the spray rod comprises a middle spray rod, a right spray rod and a left spray rod which are interconnected, and a plurality of spray heads are respectively arranged on the middle spray rod, the right spray rod and the left spray rod. The middle spray rod is fixed on a spray rod bracket, and a spray structure connects both ends of the middle spray rod.

[0013] Preferably, both ends of the middle spray rod are connected to the corresponding side surfaces of the medicine box through the medicine box side tie rod assembly respectively.

[0014] Preferably, both ends of the middle spray bar are fixedly connected to the fuselage of the helicopter through a fuselage long diagonal tie rod assembly.

[0015] Preferably, the medicine box is provided with an emergency throwing system, which includes an emergency throwing door and a push rod motor. The emergency throwing door is located on the lower surface of the medicine box, and the push rod motor has a telescopic head. One end of the emergency throwing door is hinged to the lower surface of the medicine box by a quick-release latch, and the other end of the emergency throwing door is hinged to the telescopic head of the push rod motor. When the telescopic head of the push rod motor is in an extended state, the emergency throwing door is in an open state, and the quick-release latch is connected to a push-pull device by a push-pull steel cable. The push-pull device is used to pull out the quick-release latch by the push-pull steel cable to open the emergency throwing door.

[0016] Preferably, a hinged joint is fixed to one end of the emergency jettisoning door in a vertical direction, and the hinged joint is hinged to the telescopic head of the push rod motor.

[0017] Preferably, the push-pull steel cable has a sleeve, and the sleeve of the push-pull steel cable is fixed on the wall surface of the medicine box through a mounting seat.

[0018] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:

[0019] 1. The BELL505 helicopter has a large installation space and a large load. Therefore, the main spraying structure components are directly installed on the side of the medicine box to bear the weight of the main components of the spraying structure. Two symmetrical spraying structures are used to supply pesticides to both ends of the spraying pipe to ensure the pressure. Multiple connecting structures are set to ensure the connection strength with the helicopter. Pulleys are set and universal walking wheels are used to ensure that the helicopter can move when it lands, ensuring that the heavy helicopter is easy to use.

[0020] 2. The overall structure is simple, easy to maintain and cost-effective;

[0021] 3. Made of composite materials, it is corrosion-resistant, light in weight and has strong load-bearing capacity;

[0022] 4. The emergency release system includes two control methods, which is safer and more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of the utility model;

[0024] Figure 2 Schematic diagram of the upper surface structure of the medicine box;

[0025] Figure 3 Schematic diagram of the lower surface structure of the medicine box;

[0026] Figure 4 Schematic diagram of the internal structure of the medicine box;

[0027] Figure 5 Spraying principle diagram of the utility model;

[0028] Figure 6 The stirring principle diagram of the utility model.

[0029] Reference numerals

[0030] In the attached figure, 1. medicine box, 2. filter, 3. spray pipe, 4. three-way valve, 5. return pipe, 6. water suction pipe, 7. water outlet pipe, 8. pressure relief pipe, 9. left spray rod, 10. middle spray rod, 11. right spray rod, 12. nozzle, 13. spray rod bracket, 14. medicine box side pull rod assembly, 15. fuselage long inclined pull rod assembly, 16. medicine pump, 17. inspection port cover, 18. dosing port, 19. pulley, 20. clamp, 21. main rib hanging ear, 22. medicine discharge port, 23. liquid level meter, 24. push rod motor, 25. emergency jettisoning door, 26. quick release latch, 27. push-pull steel cable, 28. upper cover plate, 29. avoidance hole, 30. internal partition of medicine box. DETAILED DESCRIPTION

[0031] The utility model provides a device installed on a BELL505 helicopter to meet the needs of agricultural and forestry spraying, and meets the purposes of large-scale pesticide spraying, pesticide mixing, emergency spraying, etc. The device has a simple structure, corrosion resistance, light weight, strong bearing capacity, low cost, low difficulty in overhaul and maintenance, high safety, and the impact of pesticide consumption on the center of gravity of the BELL505 helicopter during operation is within a limited range.

[0032] A kind of agricultural and forestry spraying equipment for BELL505 helicopter comprises a medicine box, which is in a rectangular box structure, the upper surface of the medicine box is connected to the upper cover plate, the middle part of the upper cover plate is provided with a main rib hanging ear, the edge position of the upper cover plate is provided with a clamp, the main rib hanging ear is used to be hung and fixed on the cargo hook hanging point of the helicopter, the clamp is used to be fixed on the skid type landing gear of the helicopter, a pulley is provided at the corner position of the lower surface of the medicine box, and the pulley is used to walk on the ground; one side surface of the medicine box is a mounting surface, spray rod brackets are symmetrically arranged on the mounting surface, the spray rod brackets are connected to the spray rod, two spray structures are symmetrically arranged on the mounting surface, the installation space of the spray structure is between the spray rod brackets, and the spray structure connects the two ends of the spray rod.

[0033] Each spraying structure includes a drug adding port, a drug outlet, and a reflux port arranged on the mounting surface. The drug outlet is connected to a water suction pipe, a drug pump, a water outlet pipe, and an inlet of a three-way valve in sequence. Two outlets of the three-way valve are connected to a reflux pipe and a spraying pipe respectively. The reflux pipe is connected to the reflux port. The drug pump and the three-way valve are fixed on the drug box. The spraying pipe is connected to the spraying rod through a filter. The spraying pipe is connected to the reflux pipe through a pressure relief pipe.

[0034] The spraying rod comprises a middle spraying rod, a right spraying rod and a left spraying rod which are interconnected. The middle spraying rod, the right spraying rod and the left spraying rod are respectively provided with a plurality of spray heads. The middle spraying rod is fixed on the spraying rod bracket. The spraying structure connects the two ends of the middle spraying rod. The two ends of the middle spraying rod are respectively connected to the corresponding side surface of the medicine box through the side tie rod assembly of the medicine box. The two ends of the middle spraying rod are respectively fixedly connected to the fuselage of the helicopter through the long inclined tie rod assembly of the fuselage.

[0035] The medicine box is provided with an emergency throwing system, which includes an emergency throwing door and a push rod motor. The emergency throwing door is located on the lower surface of the medicine box, and the push rod motor has a telescopic head. One end of the emergency throwing door is hinged to the lower surface of the medicine box through a quick-release latch, and the other end of the emergency throwing door is hinged to the telescopic head of the push rod motor. When the telescopic head of the push rod motor is in an extended state, the emergency throwing door is in an open state. The quick-release latch is connected to a push-pull device through a push-pull steel cable, and the push-pull device is used to pull out the quick-release latch through the push-pull steel cable to open the emergency throwing door. A hinged head is fixed at one end of the emergency throwing door in a vertical direction, and the hinged head is hinged to the telescopic head of the push rod motor. The push-pull steel cable has a sleeve, and the sleeve of the push-pull steel cable is fixed to the wall surface of the medicine box through a mounting seat.

[0036] Detailed technical solution of this utility model:

[0037] See also Figure 1-Figure 6 The invention comprises a medicine box 1, which has a medicine adding port, a medicine outlet, and a reflux port. The medicine outlet is connected to a water suction pipe 6, a medicine pump 16, a water outlet pipe 7, and an inlet of a three-way valve 4 in sequence. The two outlets of the three-way valve 4 are connected to a reflux pipe 5 and a spray pipe 3 respectively. The reflux pipe 5 is connected to the reflux port, and the spray pipe 3 is connected to an intermediate spray rod 10. A filter 2 is installed between the spray pipe 3 and the intermediate spray rod 10. The spray pipe 3 is connected to the reflux pipe 5 through a pressure relief pipe 8 for pressure relief. The spray rod comprises an intermediate spray rod 10, a right spray rod 11, and a left spray rod 9 which are interconnected. A plurality of spray heads 13 are respectively arranged on the intermediate spray rod 10, the right spray rod 12, and the left spray rod 11.

[0038] The medicine box 1 is provided with an emergency jettisoning system at the rear end. In an emergency, the push rod motor 24 is turned on, and the driving motor 24 pushes the emergency jettisoning door 25 to quickly release all the liquid medicine to raise the altitude of the aircraft. When the electric emergency jettisoning device fails, the quick-release latch 26 can be removed by pushing and pulling the steel cable 27, and the liquid medicine can also be released. The medicine box 1 is connected to the upper cover plate 28. Internal partitions 30 are crisscrossed in the medicine box 1 to divide the space of the medicine box into a plurality of compartments. The internal partitions 30 are provided with flow holes to connect adjacent compartments. The drug adding port, drug outlet, and reflux port connect different compartments. The upper cover plate 28 is provided with a plurality of inspection port covers 17, corresponding to each compartment one by one. The upper cover plate 28 is provided with an avoidance hole 29 to avoid the fuselage structural components. The upper cover plate 28, the internal partition plate 30 and the medicine box 1 of the medicine box are selected from glass fiber composite materials, and are respectively formed on the mold by vacuum introduction method. After that, the upper cover plate 28, the internal partition plate 30 and the medicine box 1 are glued and bonded into an integrated composite medicine box. There are two trapezoidal arches on the belly of the medicine box 1, and the long side is inverted at an angle of 50mm×45° to enhance the rigidity and structural stability of the medicine box. The inside and outside of the medicine box 1 are provided with a liquid level gauge 23 connected to the inner cavity to display the liquid level. The inspection port cover 17, the main rib hanging ear 21, the spray rod bracket 13, the reflux port, the emergency jettisoning system, the medicine outlet, the liquid level gauge 23, the medicine adding port 18, and the medicine discharging port 22 are fixed to the integrated composite medicine box by bolts and sealed by seals. The three-way valve 4 is fixed to the medicine box by bolts. The medicine outlet, the water suction pipe 6, and the medicine pump 16 are connected by a quick-release pipe joint and a clamp; the water outlet pipe 7, the three-way valve 4, the return pipe 5, and the return port are connected by a clamp and a quick-release pipe joint; the three-way valve 4, the spray pipe 3, and the filter 2 are connected by a clamp; the filter 2 and the middle spray rod 10 are connected by a quick-release pipe joint; the middle spray rod 10, the right spray rod 11, and the left spray rod 9 are connected by a quick-release pipe joint; the middle spray rod 10 is fixed to the spray rod bracket 13 by bolts, and supported and fixed by the medicine box side tie rod assembly 14 and the fuselage long inclined tie rod assembly 15; the nozzle 13 is manufactured integrally with the middle spray rod 10, the right spray rod 11, and the left spray rod 9; when the medicine box 1 is installed, it is connected to the cargo hook hanging point through two main rib hanging ears 21, and four clamps 20 are connected to the skid landing gear; when the medicine pump 16 is installed on the machine, it is fixed to the medicine box 1 by customized bracket bolts.

[0039] A BELL505 helicopter agricultural and forestry spraying method, see Figure 5-Figure 6By controlling the three-way valve 4 to switch between the two working conditions of stirring and spraying, in the stirring working state, the medicine liquid is sucked out of the medicine box 1 by the medicine pump 16 through the water suction pipe 6, flows through the water outlet pipe 7, the three-way valve 4, and the reflux pipe 5 to return to the medicine box 1 and impact the medicine liquid in the medicine box to complete the stirring work; in the spraying working state, the medicine liquid is sucked out of the medicine box by the medicine pump 16 through the water suction pipe 6, flows through the water outlet pipe 7, the three-way valve 4, the spraying pipe 3, the filter 2, and then enters the middle spray rod 10, the right spray rod 11 and the left spray rod 9, and the medicine liquid is sprayed from the nozzle 12.

[0040] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. An agricultural and forestry spraying device for a BELL505 helicopter, comprising a medicine box, characterized in that: The medicine box is in a rectangular box structure, the upper surface of the medicine box is connected to the upper cover plate, a main rib hanging ear is provided in the middle of the upper cover plate, a clamp is provided at the edge of the upper cover plate, the main rib hanging ear is used to be hung and fixed on the cargo hook hanging point of the helicopter, the clamp is used to be fixed on the skid-type landing gear of the helicopter, and a pulley is provided at the corner of the lower surface of the medicine box, and the pulley is used to walk on the ground; One side surface of the medicine box is a mounting surface, on which spray rod brackets are symmetrically arranged, the spray rod brackets are connected to the spray rod, two spray structures are symmetrically arranged on the mounting surface, between the spray rod brackets is an installation space for the spray structure, and the spray structure connects both ends of the spray rod.

2. The agricultural and forestry spraying equipment for a BELL505 helicopter according to claim 1, characterized in that: Each spraying structure includes a drug adding port, a drug outlet, and a reflux port arranged on the mounting surface. The drug outlet is connected to a water suction pipe, a drug pump, a water outlet pipe, and an inlet of a three-way valve in sequence. The two outlets of the three-way valve are connected to a reflux pipe and a spraying pipe respectively. The reflux pipe is connected to the reflux port. The drug pump and the three-way valve are fixed on the medicine box. The spraying pipe is connected to the spraying rod through a filter.

3. The agricultural and forestry spraying equipment for a BELL505 helicopter according to claim 2, characterized in that: The spray pipe is connected with the return pipe through a pressure relief pipe.

4. The agricultural and forestry spraying equipment for a BELL505 helicopter according to claim 1, characterized in that: The spraying rod comprises a middle spraying rod, a right spraying rod and a left spraying rod which are interconnected. A plurality of spray heads are respectively arranged on the middle spraying rod, the right spraying rod and the left spraying rod. The middle spraying rod is fixed on a spraying rod bracket, and a spraying structure connects two ends of the middle spraying rod.

5. The agricultural and forestry spraying equipment for a BELL505 helicopter according to claim 4, characterized in that: The two ends of the middle spray rod are respectively connected to the corresponding side surfaces of the medicine box through the medicine box side pull rod assembly.

6. The agricultural and forestry spraying equipment for a BELL505 helicopter according to claim 4, characterized in that: The two ends of the middle spray rod are respectively fixedly connected to the fuselage of the helicopter through a fuselage long inclined tie rod assembly.

7. The agricultural and forestry spraying equipment for a BELL505 helicopter according to claim 1, characterized in that: The medicine box is provided with an emergency throwing system, which includes an emergency throwing door and a push rod motor. The emergency throwing door is located on the lower surface of the medicine box, the push rod motor has a telescopic head, one end of the emergency throwing door is hinged to the lower surface of the medicine box by a quick-release latch, and the other end of the emergency throwing door is hinged to the telescopic head of the push rod motor. When the telescopic head of the push rod motor is in an extended state, the emergency throwing door is in an open state, the quick-release latch is connected to the push-pull device by a push-pull steel cable, and the push-pull device is used to pull out the quick-release latch by the push-pull steel cable to open the emergency throwing door.

8. The agricultural and forestry spraying equipment for a BELL505 helicopter according to claim 7, characterized in that: A hinged joint is fixed at one end of the emergency jettisoning door in a vertical direction, and the hinged joint is hinged to the telescopic head of the push rod motor.

9. The agricultural and forestry spraying equipment for a BELL505 helicopter according to claim 7, characterized in that: The push-pull steel cable is provided with a sleeve, and the sleeve of the push-pull steel cable is fixed on the wall surface of the medicine box through a mounting seat.

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