Helicopter-mounted windshield flushing device

Abstract

The utility model relates to the technical field of windshield flushing, and discloses a helicopter-mounted windshield flushing device which comprises a flushing pump assembly, a flushing hose and a water injection hose are fixed to the flushing pump assembly, and the flushing pump assembly is provided with a flushing nozzle and a water injection assembly through the flushing hose and the water injection hose respectively; through the flushing pump assembly and the water injection assembly, the automatic flushing and water injection functions of the helicopter windshield are achieved, the cleaning efficiency is greatly improved, meanwhile, through intelligent control of the flushing control box, cooperative work of flushing and the wiper is achieved, it is ensured that the wiper stops automatically when flushing liquid is used up, and the cleaning efficiency is improved. In addition, by means of the designed special structure and materials, structural parts are reduced, cost is reduced, reliability is improved, and the service life is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of windshield washing, and particularly to a helicopter airborne windshield washing device. Background Art

[0002] As one of the most distinctive creations in aviation technology in the 20th century, helicopters have greatly expanded the application scope of aircraft. Helicopters are typical products for both military and civilian use and can be widely used in multiple fields such as transportation, patrol, tourism, and rescue.

[0003] However, during actual flights, the windshield of a helicopter is easily contaminated, such as by rain, dust, bird droppings, etc. These contaminants will seriously affect the pilot's line of sight and thus pose a threat to flight safety. Therefore, the windshield of a helicopter needs to be cleaned regularly. However, the currently popular windshield washing devices on the market have many problems, such as large equipment volume, heavy weight, and low operation efficiency, which not only increase the burden on the helicopter but also, due to their large volume and low efficiency, it is difficult to achieve a fast and effective cleaning effect during actual use.

[0004] The above information disclosed in this background art is only used to increase the understanding of the background art of the present application. Therefore, it may include prior art that is not known to ordinary technicians in this field. Summary of the Utility Model

[0005] In order to solve the problems of the currently popular windshield washing devices on the market, such as large equipment volume, heavy weight, and low operation efficiency, which not only increase the burden on the helicopter but also, due to their large volume and low efficiency, it is difficult to achieve a fast and effective cleaning effect, the present application provides a helicopter airborne windshield washing device.

[0006] The helicopter airborne windshield washing device provided by the present application adopts the following technical solutions:

[0007] A helicopter airborne windshield washing device includes a washing pump assembly. A washing hose and a water injection hose are respectively fixed on the washing pump assembly. The washing pump assembly is respectively equipped with a washing nozzle and a water injection assembly through the washing hose and the water injection hose.

[0008] The washing pump assembly includes a washing control box, a water pump motor, and a water tank. The water pump motor and the washing control box are fixed on both sides of the water tank.

[0009] Preferably, the bottom of the water tank is cut obliquely by ° at the front and rear in the heading direction.

[0010] Preferably, the water injection assembly further includes a filling outer cylinder and a filling inner cylinder. A fixing rod and a connecting plate are fixed inside the filling outer cylinder. A sliding rod is fixed on the connecting plate. A push rod is slidably connected to the sliding rod. A liquid level scale is fixed on one side of the push rod. A spring is sleeved on the outer wall of the sliding rod, and the spring is located between the push rod and the sliding rod. Two clamping grooves for hanging on the fixing rod are formed on the outer wall of the filling inner cylinder, and a slotted groove is formed at one end of the filling inner cylinder.

[0011] Preferably, the liquid level scale is made of transparent copolymer of tetrafluoroethylene and hexafluoropropylene.

[0012] In summary, the present application includes the following beneficial technical effects:

[0013] By providing the flushing pump assembly and the water injection assembly, the automatic flushing and water injection functions of the helicopter windshield are realized, greatly improving the cleaning efficiency. At the same time, through the intelligent control of the flushing control box, not only the coordinated operation of the flushing and the windshield wiper is realized, but also the windshield wiper automatically stops when the flushing liquid is exhausted, avoiding equipment damage. In addition, through the designed special structure and materials, while reducing structural parts and costs, the reliability and service life of the device are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present utility model;

[0015] Figure 2 is a schematic side structural diagram of the flushing pump assembly in the embodiment of the present application;

[0016] Figure 3 is a schematic internal structural diagram of the filling outer cylinder in the embodiment of the present application;

[0017] Figure 4 is a schematic sectional structural diagram of the filling outer cylinder in the embodiment of the present application;

[0018] Figure 5 is a schematic structural diagram of the filling inner cylinder in the embodiment of the present application;

[0019] Figure 6 is a schematic three-dimensional structural diagram of the water tank in the embodiment of the present application

[0020] Figure 7 is a control schematic diagram of the windshield flushing device in the embodiment of the present application.

[0021] Description of reference numerals: 1. Flushing pump assembly; 2. Flushing hose; 3. Flushing nozzle; 4. Water injection hose; 5. Water injection assembly; 6. Filling outer cylinder; 7. Filling inner cylinder; 8. Slide bar; 9. Push rod; 10. Spring; 11. Fixed rod; 12. Slotted cross; 13. Card slot; 14. Connecting plate; 15. Flushing control box; 16. Water pump motor; 17. Water tank; 18. Liquid level scale. Detailed implementation manners

[0022] The following further describes the present application in conjunction with Figure 1 - appended Figure 7 drawings.

[0023] An embodiment of the present application discloses a helicopter airborne windshield flushing device. Referring to Figures 1 - 7 , a helicopter airborne windshield flushing device includes a flushing pump assembly 1, a flushing hose 2 and a water injection hose 4 are respectively fixed on the flushing pump assembly 1, and a flushing nozzle 3 and a water injection assembly 5 are respectively installed on the flushing pump assembly 1 through the flushing hose 2 and the water injection hose 4; the flushing pump assembly 1 includes a flushing control box 15, a water pump motor 16 and a water tank 17, and the water pump motor 16 and the flushing control box 15 are fixed on both sides of the water tank 17; when the windshield needs to be cleaned, an external signal will trigger the flushing control box 15 to start the working circuit and control the water pump motor 16 to start working. After a 2-second delay, the flushing nozzle 3 will spray the flushing liquid. At the same time, the flushing control box 15 will start the windshield wiper to work to clean the glass surface and remove the dirt on the surface. After the water pump motor 16 works for 8 seconds, it will stop working, and at the 10th second, the flushing control box 15 will stop outputting the windshield wiper working signal, and at this time the windshield wiper will automatically reset;

[0024] In order to prevent the windshield wiper from idling after the flushing liquid is used up and causing equipment damage, the flushing control box 15 judges whether there is still flushing liquid in the water tank 17 by detecting the working current of the water pump motor 16. If the flushing liquid in the water tank 17 has been used up, the working current of the water pump motor 16 will decrease, and at this time the water pump motor 16 will be immediately stopped, and the windshield wiper working signal will be stopped output later;

[0025] This helicopter airborne windshield flushing device can not only realize the automatic connection of the windshield wiper to work in coordination during flushing, automatically time and accurately end flushing and brushing, but also has the intelligent function of preventing dry running. The realization of these functions greatly improves the cleaning effect and stability, significantly improves the intelligent level, further improves the flight safety and comfort of the helicopter, and provides a more reliable flight guarantee for the pilot.

[0026] Referring to Figure 6 , the bottom of the water tank 17 is inclined by 22° in the front and back in the heading direction; it is ensured that the flushing liquid can flow to the water pump inlet at the maximum pitch angle position.

[0027] Reference Figure 1 、 Figure 3 、 Figure 4 and Figure 5 Also, the water injection assembly 5 further includes a filling outer cylinder 6 and a filling inner cylinder 7. A fixing rod 11 and a connecting plate 14 are fixed inside the filling outer cylinder 6. A sliding rod 8 is fixed on the connecting plate 14. A top rod 9 is slidably connected to the sliding rod 8. A liquid level scale 18 is fixed on one side of the top rod 9. A spring 10 is sleeved on the outer wall of the sliding rod 8, and the spring 10 is located between the top rod 9 and the sliding rod 8. Two card slots 13 for hanging on the fixing rod 11 are formed on the outer wall of the filling inner cylinder 7. A slotted groove 12 is formed at one end of the filling inner cylinder 7. When closing the filling outer cylinder 6, the filling inner cylinder 7 can be inserted into the filling outer cylinder 6. Then, insert a flat-blade screwdriver into the slotted groove 12 of the filling inner cylinder 7 to squeeze the liquid level scale 18 and the top rod 9, thereby compressing the spring 10. When the filling inner cylinder 7 is completely inserted, the two card slots 13 will be inserted on the fixing rod 11 and rotated clockwise by about 10°, so that the card slots 13 are hung on the fixing rod 11;

[0028] When filling is required, insert a flat-blade screwdriver into the slotted groove 12 of the filling inner cylinder 7, press down and rotate counterclockwise by about 10°, and then release. Under the action of the spring force of the spring 10, the filling inner cylinder 7 will pop out together with the liquid level scale 18 and the top rod 9. By checking the liquid height of the liquid level scale 18, determine the amount of flushing liquid remaining in the water tank 17. Then, pull out the filling inner cylinder 7 by hand to the maximum position to start filling. After filling is completed, push the filling inner cylinder 7 in and rotate clockwise to lock it.

[0029] Reference Figure 3 and Figure 4 The liquid level scale 18 is made of transparent tetrafluoroethylene and hexafluoropropylene copolymer; this material has good light transmittance, the service temperature is -115 to 200 °C, and it has good resistance to acids, alkalis and organic solvents, which can prevent the liquid level mark from being scraped off, further increasing the viewing accuracy and meeting the use requirements of the product.

[0030] The implementation principle of an on-board windshield flushing device for a helicopter in an embodiment of the present application is as follows: When the windshield needs to be cleaned, an external signal will trigger the flushing control box 15 to start the working circuit and control the water pump motor 16 to start working. After a 2-second delay, the flushing nozzle 3 will spray the flushing liquid. At the same time, the flushing control box 15 will start the wiper to work to clean the glass surface and remove the dirt on the surface. After the water pump motor 16 works for 8 seconds, it will stop working. At the 10th second, the flushing control box 15 will stop outputting the wiper working signal, and at this time the wiper will automatically reset;

[0031] To prevent the wiper from idling after the flushing liquid is exhausted and causing damage to the equipment, the flushing control box 15 determines whether there is still flushing liquid in the water tank 17 by detecting the working current of the water pump motor 16. If the flushing liquid in the water tank 17 has been used up, the working current of the water pump motor 16 will decrease. At this time, the operation of the water pump motor 16 will be immediately stopped, and the wiper working signal will be stopped later.

[0032] The helicopter airborne windshield flushing device can not only automatically connect the windshield wiper to work together during flushing, automatically time and accurately end flushing and brushing, but also has the intelligent function of preventing dry running. The realization of these functions greatly improves the cleaning effect and stability, significantly enhances the intelligent level, further improves the flight safety and comfort of the helicopter, and provides a more reliable flight guarantee for the pilot.

[0033] Finally, several points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the connection inside two components, and can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change;

[0034] Second: In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. Other structures can refer to the usual designs. Without conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0035] Finally: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

[0036] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered by the protection scope of this application.

Claims

1. A helicopter windshield washing device, comprising a washing pump assembly (1), characterized in that: A flushing hose (2) and a water injection hose (4) are respectively fixed to the flushing pump assembly (1), and a flushing nozzle (3) and a water injection assembly (5) are respectively installed on the flushing pump assembly (1) through the flushing hose (2) and the water injection hose (4); The flushing pump assembly (1) comprises a flushing control box (15), a water pump motor (16) and a water tank (17); the water pump motor (16) and the flushing control box (15) are fixed on both sides of the water tank (17).

2. A helicopter windshield washing device according to claim 1, characterized in that: The bottom of the water tank (17) is inclined by 22° in the front and rear directions of the heading direction.

3. The helicopter windshield washing device according to claim 1, characterized in that: The water injection assembly (5) further comprises an outer filling cylinder (6) and an inner filling cylinder (7); a fixing rod (11) and a connecting plate (14) are fixed inside the outer filling cylinder (6); a sliding rod (8) is fixed on the connecting plate (14); a push rod (9) is slidably connected to the sliding rod (8); a liquid level gauge (18) is fixed on one side of the push rod (9); a spring (10) is sleeved on the outer wall of the sliding rod (8); the spring (10) is located between the push rod (9) and the sliding rod (8); two clamping grooves (13) for hanging on the fixing rod (11) are provided on the outer wall of the inner filling cylinder (7); and a straight groove (12) is provided at one end of the inner filling cylinder (7).

4. A helicopter windshield washing device according to claim 3, characterized in that: The liquid level gauge (18) is made of a transparent tetrafluoroethylene and polyhexafluoropropylene copolymer.

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