CN115154954A - An amphibious aircraft water pumping device with a feedback mechanism deflector rib - Google Patents

Abstract

The invention discloses an amphibious aircraft water-sucking device with a feedback mechanism guide rib, which comprises a guide ring, a mounting ring is arranged outside the guide ring, and a guide rib is arranged inside the guide ring along the water flow direction , the guide rib is an elliptical structure, and the size of one end of the guide rib is larger than the size of the other end, and the guide rib is a spherical structure; both sides of the large-sized end of the guide rib are provided with a first rotation axis and a second Two rotating shafts, the second rotating shaft passes through the mounting table and is connected to the drive shaft, the drive shaft is connected to the drive mechanism, the rotation axis of the guide rib and the axis of the guide ring intersect and are perpendicular; the drive mechanism is installed in the drive box and drives the A controller is arranged in the box, a communication joint is arranged on the side of the driving box, and the communication joint is electrically connected with the controller. The invention is installed in the water drawing pipeline in the water drawing system of an aircraft or an unmanned aerial vehicle, further improves the water drawing efficiency of the water drawing system, and optimizes the force distribution of the pipeline.

Description

An amphibious aircraft water pumping device with a feedback mechanism deflector rib

technical field

The invention relates to the technical field of water drawing devices, in particular to an amphibious aircraft water drawing device with a feedback mechanism guide rib.

Background technique

Forest fires often pose a serious threat to the safety of human life and property and the ecological environment, and have gradually attracted public attention in recent years. However, due to its high requirements for firefighters, fast fire spread, and complex fire terrain, the traditional fire protection system is difficult to meet the requirements of forest fire fighting. In addition, the outbreak of forest fires is often accompanied by suddenness and randomness. These factors make the fighting of forest fires full of difficulties, but also pose a serious threat to the life safety of firefighters, and the economic burden caused by wildfires is huge every year. Therefore, it is particularly important to find a more efficient fire fighting method to reduce the risk of forest fire fighting.

Amphibious aircraft are suitable for various military and civilian tasks such as maritime patrol, anti-submarine, bombing, reconnaissance, transportation, and urban and forest firefighting due to their ability to take off and land on land and water. Although modern amphibious aircraft have been replaced by helicopters in many fields, compared to helicopters, amphibious aircraft have lower take-off and landing conditions, are less susceptible to harsh environments, and are therefore more capable of performing a variety of tasks. At the same time, amphibious aircraft have obvious advantages in forest fire fighting and fire rescue, including strong maneuverability, high fire fighting accuracy, and freedom from terrain and personnel restrictions.

At the current technical level, there is a relatively complete water-drawing bucket retracting and releasing system and a classic water-drawing bucket structure. In the process of drawing water, the water-drawing bucket has the defect that the water flow in the water-drawing pipeline varies greatly, resulting in low water-drawing efficiency and long time consumption, which greatly affects the timeliness of fire fighting.

SUMMARY OF THE INVENTION

In view of the above shortcomings of the prior art, the present invention provides a diversion mechanism with a feedback mechanism that can change the angle of the diversion rib in real time according to the change of the water flow in the pipeline, so that the mass flow difference in the water drawing pipeline reaches the minimum value. Ribbed amphibious aircraft water pumping device.

In order to achieve the above-mentioned purpose of the invention, the technical scheme adopted in the present invention is:

Provided is an amphibious aircraft water-sucking device with a feedback mechanism deflector rib, which comprises a guide ring, the guide ring is installed on a water-drawing pipe of the amphibious aircraft, and the water-drawing pipe is connected with two shunt pipes through a three-pronged pipe joint , the diversion ring is arranged near the three-pronged pipe joint, a mounting ring is arranged outside the diversion ring, and a diversion rib is arranged in the diversion ring along the direction of the water flow. The diversion rib is an elliptical spherical structure, and the diversion The dimension of one end of the rib is larger than that of the other end;

Both sides of the large-sized end of the guide rib are provided with a first rotating shaft and a second rotating shaft, the first rotating shaft is hinged on one side of the guide ring, and the second rotating shaft passes through the guide ring and the other side of the installation ring. The side of the mounting ring is provided with a mounting platform, the second rotating shaft passes through the mounting platform and is connected to the drive shaft, the drive shaft is connected to the drive mechanism, the rotation axis of the guide rib and the axis of the guide ring intersect and are vertical; the drive mechanism It is installed in a drive box, a controller is arranged in the drive box, a communication connector is arranged on the side of the drive box, and the communication connector is electrically connected with the controller;

The mounting table is provided with a sealing counterbore from the side, a sealing sleeve is arranged in the sealing counterbore, and the sealing sleeve is sleeved on the second rotating shaft. Through holes, a top ring extending into the inner ring of the sealing sleeve is provided on the side of the sealing plate close to the sealing sleeve, the inner ring of the sealing sleeve is provided with an installation sink, and two limit rings are arranged on the installation sink. The limit ring is sleeved on the second rotating shaft, and a plurality of first sealing rings and a plurality of second sealing rings are arranged between the two limit rings;

A plurality of first sealing rings are sleeved on the second rotating shaft in sequence along the length of the second rotating shaft; the inner surface of the first sealing ring is a plane that closely fits with the second rotating shaft, and the outer surface of the first sealing ring is an inclined surface, And the cross section of the first sealing ring is a right-angled triangle structure; a second sealing ring is arranged in the space between several first sealing rings, and the inner surface of the second sealing ring is an inclined surface that closely fits with the outer surface of the first sealing ring. The outer surface of the second sealing ring is a plane that is closely matched with the surface of the mounting sink, one of the limit rings cooperates with the top ring to limit the position, and the other limit ring cooperates with the bottom of the mounting sink to limit the position.

Further, the driving mechanism includes a driving motor arranged in the driving box, a transmission box is arranged beside the driving box, the transmission box is sealedly connected with the installation platform, and the driving shaft is connected with the driving mechanism through the transmission box.

Further, the installation platform and the transmission case are connected by a connection ring, and both ends of the connection ring are respectively provided with a first connection plate and a second connection plate, and the first connection plate and the second connection are respectively connected with the transmission case and the sealing plate; The end of the second rotating shaft is provided with a square shaft, the end of the driving shaft is provided with a square hole, the square shaft is inserted into the square hole, the connecting ring is sleeved on the connection position of the square shaft and the square hole, and the driving shaft and the connecting ring are connected connected by bearings.

Further, a plug-in ring is provided on the first connecting plate, the plug-in ring is connected with the plug-in hole opened on the side of the drive box, and the plug-in ring is provided with a fourth sealing ring matched with the plug-in hole.

Further, the guide ring is made of rubber, the upper and lower ends of the guide ring are provided with a snap ring, the cross section of the snap ring is an L-shaped structure, and the upper and lower end surfaces of the mounting ring are provided with matching snap rings to install. In the snap groove, the snap ring and the guide ring are integrally formed.

Further, a plurality of first sealing ribs are provided at the connection between the side surface of the guide ring and the second rotating shaft, and a plurality of second sealing ribs are provided on the upper and lower end surfaces of the guide ring.

Further, a sink groove for installing the third sealing ring is opened on the second rotating shaft, and a limit slip ring for limiting the position of the third seal ring is sleeved in the sink groove.

Further, both ends of the first rotating shaft and the second rotating shaft are provided with a clamp-shaped bayonet, and the guide rib is clamped on the clamp-shaped bayonet.

The beneficial effects of the present invention are as follows: the present invention is installed in the water-drawing pipeline in the water-drawing system of the aircraft or unmanned aerial vehicle, and can effectively increase the water-drawing efficiency during the forest fire extinguishing process. By adjusting the inclination angle of the guide rib To adjust the water flow and water flow speed in the water-drawing pipe, the flow rate per unit time on the cross-section of the shunt pipe is basically equal, and the function and reliability of the water-drawing system are further improved. Improve the water-drawing efficiency of the water-drawing system and optimize the force distribution of the pipeline.

The invention adjusts the inclination of the guide rib and the angle of rotation around the rotation axis according to the water flow at different positions at the entrance of the guide area when water is drawn, and finally minimizes the cross-sectional mass flow difference at the exit of the guide area to reduce turbulent flow The impact on the suction pipe will ultimately minimize the difference in mass flow at the outlet of the suction pipe. At the same time, the present invention can minimize the influence of turbulent flow inside the water-drawing system when the aircraft is placed and flies on the water surface, and adopts a lightweight design as a whole to reduce the burden on the body caused by the structure. The overall sealing effect is good, and the transmission structure is stable.

Description of drawings

Figure 1 is a perspective view of an amphibious aircraft water pumping device with a feedback mechanism baffle.

Figure 2 is a cross-sectional view of the mounting ring and the deflector ring.

FIG. 3 is a structural diagram of the enlarged part A in FIG. 2 .

Fig. 4 is the installation structure diagram of the water pumping device.

Among them, 1, guide rib, 2, pliers bayonet, 3, guide ring, 4, sealing plate, 5, connecting ring, 6, transmission box, 7, drive box, 8, communication connector, 9, No. Second seal ring, 10, mounting ring, 11, top ring, 12, second rotating shaft, 13, first seal ring, 14, limit ring, 15, limit slip ring, 16, snap ring, 17, square Shaft, 18, drive shaft, 19, sealing sleeve, 20, third sealing ring, 21, water drawing pipe, 22, shunt pipe, 23, water drawing bucket.

Detailed ways

The specific embodiments of the present invention are described below to facilitate those skilled in the art to understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Such changes are obvious within the spirit and scope of the present invention as defined and determined by the appended claims, and all inventions and creations utilizing the inventive concept are within the scope of protection.

As shown in Figures 1 to 4, the amphibious aircraft water drawing device with a feedback mechanism deflector rib of this solution includes a deflector ring 3, and the deflector ring 3 is installed on the water drawing 21 of the amphibious aircraft to draw water. The pipeline 21 is connected with the two shunt pipes 22 through the trident pipe joint, the end of the water-drawing pipe 21 is connected with the water-drawing bucket 23, the diversion ring 3 is arranged near the trident pipe joint, and the installation ring 10 is provided outside the diversion ring 3, A guide rib 1 is arranged in the guide ring 3 along the direction of the water flow. The guide rib 1 is an elliptical spherical structure, and the size of one end of the guide rib 1 is larger than the size of the other end. When the guide rib 1 During rotation, the design of the large and small ends can reduce the resistance of water, and the diversion effect of the diversion rib 1 is stable.

A first rotating shaft and a second rotating shaft 12 are provided on both sides of the large-sized end of the guide rib 1, the first rotating shaft is hinged on one side of the guide ring 3, and the second rotating shaft 12 passes through the guide ring 3 and the second rotating shaft 12. On the other side of the mounting ring 10, a mounting table is provided on the side of the mounting ring 10. The second rotating shaft 12 passes through the mounting table and is connected to the driving shaft 18. The driving shaft 18 is connected to the driving mechanism. The axes of the guide ring 3 intersect and are vertical; the drive mechanism is installed in the drive box 7, which is provided with a controller, and the side of the drive box 7 is provided with a communication connector 8, which is electrically connected to the controller.

The present invention is installed in the water-drawing pipe 21 in the water-drawing system of an aircraft or unmanned aerial vehicle, and can effectively increase the efficiency of water-drawing during forest fire fighting. The water-drawing pipe can be adjusted by adjusting the inclination angle of the guide rib 1 The water flow rate and water flow speed in 21 make the flow rate passing through the unit time on the cross section of the shunt pipe 22 basically equal, which further improves the function and reliability of the water drawing system.

The mounting table is provided with a sealing counterbore from the side, a sealing sleeve 19 is arranged in the sealing counterbore, and the sealing sleeve 19 is sleeved on the second rotating shaft 12. The through hole through which the rotating shaft 12 passes. The sealing plate 4 is provided with a top ring 11 extending into the inner ring of the sealing sleeve 19 on the side close to the sealing sleeve 19. The inner ring of the sealing sleeve 19 is provided with an installation sink, and the installation sink Two limit rings 14 are arranged on the upper part, the two limit rings 14 are sleeved on the second rotating shaft 12, and a plurality of first sealing rings 13 and a plurality of second sealing rings 9 are arranged between the two limit rings 14;

A plurality of first sealing rings 13 are sleeved on the second rotating shaft 12 in sequence along the length of the second rotating shaft 12; The outer surface is inclined, and the cross section of the first sealing ring 13 is a right-angled triangular structure; a second sealing ring 9 is arranged in the space between several first sealing rings 13, and the inner surface of the second sealing ring 9 is the same as that of the first sealing ring 9. The outer surface of the sealing ring 13 is closely matched with the inclined surface, and the outer surface of the second sealing ring 9 is a plane that is closely matched with the surface of the mounting sink. Fit the limit at the bottom of the installation sink.

Through the close cooperation between the first sealing ring 13 and the second sealing ring 9, the gap between the first sealing ring 13 and the second sealing ring 9 can be fully filled to achieve the optimal sealing effect; at the same time, by squeezing the first sealing ring 13 and the second sealing ring 9, so that the gap can be filled between the first sealing ring 13 and the second sealing ring 9, and the rotary dynamic sealing effect is realized.

The driving mechanism includes a driving motor arranged in the driving box 7 , a transmission box 6 is arranged beside the driving box 7 , the transmission box 6 is sealedly connected with the installation platform, and the driving shaft 18 passes through the transmission box 6 and is connected with the transmission mechanism. In the present invention, by controlling the rotation angle of the guide rib 1 , the damage of the guide rib 1 due to excessive rotation is avoided.

The installation platform and the transmission box 6 are connected by a connecting ring 5. The two ends of the connecting ring 5 are respectively provided with a first connecting plate and a second connecting plate. The first connecting plate and the second connecting plate are respectively connected with the transmission box 6 and the sealing plate 4. Connection; the end of the second rotating shaft 12 is provided with a square shaft 17, the end of the drive shaft 18 is provided with a square hole, the square shaft 17 is inserted into the square hole, and the connecting ring 5 is sleeved on the connection position of the square shaft 17 and the square hole , and the drive shaft 18 and the connecting ring 5 are connected by a bearing. It is easy to assemble and make the transmission of the drive shaft 18 stable.

The guide ring 3 is made of rubber. The upper and lower ends of the guide ring 3 are provided with a snap ring 16. The cross section of the snap ring 16 is an L-shaped structure. The upper and lower surfaces of the mounting ring 10 are provided with matching snaps The ring 16 is installed in the snap groove, and the snap ring 16 is integrally formed with the guide ring 3 . A plurality of first sealing ribs are provided at the connection between the side surface of the guide ring 3 and the second rotating shaft 12 , and a plurality of second sealing ribs are provided on the upper and lower end surfaces of the guide ring 3 . It is convenient to install the guide ring 3 , the guide ring 3 and the installation ring 10 are connected stably, and the installation ring 10 has good sealing performance when installed on the water drawing pipe 21 .

The second rotating shaft 12 is provided with a sinking groove for installing the third sealing ring 20 . The sinking groove is sleeved with a limit slip ring 15 for limiting the position of the third sealing ring 20 to ensure the second rotating shaft 12 and the sealing sleeve 19 The tightness between them realizes the rotary dynamic seal.

The ends of the first rotating shaft and the second rotating shaft 12 are both provided with a pliers-shaped bayonet 2 , and the guide rib 1 is clamped on the pliers-shaped bayonet 2 to facilitate the replacement of the guide rib 1 .

The present invention adjusts the inclination of the guide rib 1 and the angle of rotation around the rotation axis according to the water flow at different positions at the entrance of the guide area when water is drawn, and finally minimizes the cross-sectional mass flow difference at the exit of the guide area to reduce the The influence of turbulent flow on the water-drawing pipe 21 ultimately minimizes the difference in mass flow at the outlet of the water-drawing pipe 21 . At the same time, the present invention can minimize the influence of turbulent flow inside the water-drawing system when the aircraft is placed and flies on the water surface, and adopts a lightweight design as a whole to reduce the burden on the body caused by the structure. The overall sealing effect is good, and the transmission structure is stable.

Claims (8)

1. The amphibious aircraft water drawing device with the feedback mechanism diversion rib plates is characterized by comprising a diversion ring, wherein the diversion ring is installed on a water drawing pipeline of the amphibious aircraft, the water drawing pipeline is connected with two shunt pipes through a Y-pipe joint, the diversion ring is arranged at a position close to the Y-pipe joint, an installation ring is arranged outside the diversion ring, diversion rib plates are arranged in the diversion ring along the direction of water flow, the diversion rib plates are of an elliptical spherical structure, and the size of one end of each diversion rib plate is larger than that of the other end of each diversion rib plate;

a first rotating shaft and a second rotating shaft are arranged on two sides of the large-size end of the flow guide rib plate, the first rotating shaft is hinged to one side of the flow guide ring, the second rotating shaft penetrates through the other sides of the flow guide ring and the mounting ring, a mounting table is arranged on the side face of the mounting ring, the second rotating shaft penetrates through the mounting table and is connected with a driving shaft, the driving shaft is connected with a driving mechanism, and the rotating axis of the flow guide rib plate is intersected with and perpendicular to the axis of the flow guide ring; the driving mechanism is arranged in a driving box, a controller is arranged in the driving box, a communication joint is arranged on the side surface of the driving box, and the communication joint is electrically connected with the controller;

the mounting platform is provided with a sealing counter bore from the side, a sealing sleeve is arranged in the sealing counter bore and sleeved on a second rotating shaft, the mounting platform is packaged through a sealing plate, the sealing plate is provided with a through hole through which the second rotating shaft passes, one side, close to the sealing sleeve, of the sealing plate is provided with a top ring extending into an inner ring of the sealing sleeve, the inner ring of the sealing sleeve is provided with a mounting sinking platform, the mounting sinking platform is provided with two limiting rings, the two limiting rings are sleeved on the second rotating shaft, and a plurality of first sealing rings and a plurality of second sealing rings are arranged between the two limiting rings;

a plurality of first sealing rings are sequentially sleeved on the second rotating shaft in parallel along the length of the second rotating shaft; the inner surface of the first sealing ring is a plane which is tightly matched with the second rotating shaft, the outer surface of the first sealing ring is an inclined plane, and the section of the first sealing ring is of a right-angled triangle structure; and a second sealing ring is arranged in a gap between the first sealing rings, the inner surface of the second sealing ring is an inclined plane which is tightly matched with the outer surface of the first sealing ring, the outer surface of the second sealing ring is a plane which is tightly matched with the surface of the mounting sinking platform, one of the limiting rings is matched with the top ring for limiting, and the other limiting ring is matched with the bottom of the mounting sinking platform for limiting.

2. The amphibious aircraft water drawing device with the feedback mechanism guide rib plate according to claim 1, wherein the driving mechanism comprises a driving motor arranged in a driving box, a transmission box is arranged beside the driving box and is in sealed connection with the mounting table, and the driving shaft penetrates through the transmission box and is connected with the driving mechanism.

3. The amphibious aircraft water drawing device with the feedback mechanism guide rib plate according to claim 1, wherein the mounting platform is connected with the transmission case through a connecting ring, a first connecting plate and a second connecting plate are respectively arranged at two ends of the connecting ring, and the first connecting plate and the second connecting plate are respectively connected with the transmission case and the sealing plate; the end part of the second rotating shaft is provided with a square shaft, the end part of the driving shaft is provided with a square hole, the square shaft is inserted into the square hole, the connecting ring is sleeved on the connecting position of the square shaft and the square hole, and the driving shaft is connected with the connecting ring through a bearing.

4. The amphibious aircraft water drawing device with the feedback mechanism guide rib plate as claimed in claim 3, wherein the first connecting plate is provided with an inserting ring, the inserting ring is connected with an inserting hole formed in the side surface of the driving box, and a fourth sealing ring matched with the inserting hole is arranged on the inserting ring.

5. The amphibious aircraft water drawing device with the feedback mechanism guide rib plate as claimed in claim 1, wherein the guide ring is made of rubber, clamping rings are arranged on outer sides of upper and lower ends of the guide ring, the cross section of each clamping ring is of an L-shaped structure, the upper and lower end surfaces of the mounting ring are provided with matching clamping rings which are mounted in clamping grooves, and the clamping rings and the guide ring are integrally formed.

6. The amphibious aircraft water drawing device with the feedback mechanism guide rib plate as claimed in claim 5, wherein a plurality of first sealing convex edges are arranged at the connection position of the side face of the guide ring and the second rotating shaft, and a plurality of circles of second sealing convex edges are arranged on the upper end surface and the lower end surface of the guide ring.

7. The amphibious aircraft water drawing device with the feedback mechanism guide rib plate according to claim 1, wherein a sinking groove for mounting a third seal ring is formed in the second rotating shaft, and a limiting sliding ring for limiting the third seal ring is sleeved in the sinking groove.

8. The amphibious aircraft water drawing device with the feedback mechanism guide rib plate according to claim 1, wherein the end portions of the first rotating shaft and the second rotating shaft are respectively provided with a pincer-shaped bayonet, and the guide rib plate is clamped on the pincer-shaped bayonet.

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