CN112758337B - An aerial refueling device with a gas actuated variable stiffness hose - Google Patents

Abstract

An aerial refueling device with a gas-driven variable stiffness hose relates to the technical field of aerial refueling. The invention solves the problem that the existing soft aerial refueling hose is extremely susceptible to air flow disturbance during the docking process due to its flexibility, which causes the docking failure, and the hose needs to be flexible in the hose retracting stage. This leads to the problem of contradicting the performance requirements of the hose in the retracting and releasing stage and the docking stage. The variable stiffness hose of the present invention is wound on the winch before being released, the head end of the variable stiffness hose enters the inside of the winch through the guide hole and is bent and then connected to the rotary joint through the shaft hole of the support frame. Several annular tooth slots are uniformly opened on the surface from front to back along the length direction, and several meshing tooth groups are arranged between the gas-filled layer and the inner tooth layer and are arranged one-to-one with the several annular tooth slots on the inner tooth layer. The invention realizes the time-domain variable stiffness of the refueling hose by inflating and deflating the inflatable layer to control the occlusion of the inner tooth layer and the meshing teeth.

Description

An aerial refueling device with a gas-actuated variable stiffness hose

technical field

The invention relates to the technical field of aerial refueling, in particular to an aerial refueling device with a gas-driven variable stiffness hose.

Background technique

Aerial refueling technology refers to the technology of refueling one aircraft in the air to another or several aircraft to increase its range and endurance. Aerial refueling technology greatly improves the flight range of the aircraft, prolongs the airtime of the aircraft, increases the payload of the aircraft, and solves the contradiction between the fuel load and the take-off distance. It has gradually become an important means for the modern air force to effectively expand the combat range and combat capability of air power. The flexible aerial refueling hose is easy to retract, small in size and simple in structure, but the flexible hose is easily disturbed by the airflow during the docking process, resulting in docking failure. Due to its flexibility, the soft aerial refueling hose is very susceptible to airflow disturbance during the docking process, resulting in docking failure, and the hose needs to be flexible during the hose retraction stage. As a result, there is a contradiction in the performance requirements of the hose during the retraction and deployment stages and the docking stage. In order to improve the stability of the hose during the docking process, reduce the influence of disturbance, and improve the docking success rate, the present invention provides a flexible and easy-to-retract hose during the docking process, and has high rigidity and strong stability during the docking process. Fuel hose.

To sum up, the existing soft aerial refueling hose is extremely susceptible to airflow disturbance during the docking process due to its flexibility, which leads to docking failure, and the hose needs to be flexible during the hose retraction stage. This leads to the problem of conflicting demands on hose performance in the retracting stage and the docking stage.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the problem that the existing soft aerial refueling hose is extremely susceptible to airflow disturbance during the docking process due to its flexibility, and the docking fails, and the hose needs to be flexible during the hose retracting stage. As a result, there is a problem of contradicting the performance requirements of the hose in the retraction and deployment stage and the docking stage, and further provides an aerial refueling device with a gas-driven variable-stiffness hose.

The technical scheme of the present invention is:

An aerial refueling device with a gas-driven variable stiffness hose, which includes a variable stiffness hose 1, a winch 2, a support frame 3, a rotary joint 4, a valve 5, an oil delivery pipe 6, a gas conduit 7, an air pump 8, and a power cord 9 And the umbrella cone 10, the capstan 2 is a cylindrical structure, the outer cylindrical surface of the capstan 2 is provided with a guide hole, the capstan 2 is arranged vertically, the number of support frames 3 is two, and the two support frames 3 are vertically opposite to the capstan 2. The left and right ends of the rotary joint 4 are integrally connected with the winch 2. A shaft hole is provided in the center of each support frame 3. One end of the rotary joint 4 is rotated and installed in the shaft hole of the support frame 3 on one side. On the winch 2, the head end of the variable stiffness hose 1 enters the inside of the winch 2 through the guide hole, the variable stiffness hose 1 is bent at one end inside the winch 2 and is connected to the rotary joint 4 through the shaft hole of the support frame 3, and the other end of the rotary joint 4 is bent. The valve 5 is connected, the valve 5 is connected to the oil pipeline 6, and the tail of the variable stiffness hose 1 is connected to the umbrella cone 10. The variable stiffness hose 1 includes an inner insulator layer 11, an inner tooth layer 12, an inflatable layer 13, an outer elastomer layer 15 and several meshing In the tooth group, the inner insulator layer 11, the inner tooth layer 12, the inflatable layer 13 and the outer elastomer layer 15 are all circular tubular structures. Outside the inner insulator layer 11, the outer surface of the inner tooth layer 12 is uniformly opened with a number of annular tooth slots from front to back along the length direction. Several annular tooth grooves on the inner tooth layer 12 are arranged in one-to-one correspondence, and a sealing cavity is provided inside the inflatable layer 13 . The air-filled layer 13 is connected to the sealed cavity, the air pump 8 is installed on the outer end surface of the support frame 3 close to the side of the rotary joint 4 , the other end of the gas conduit 7 is connected to the air pump 8 , and the external power supply is connected to the air pump 8 through the power cord 9 .

Further, each meshing tooth group includes three meshing teeth 16, and three meshing teeth 16 are installed on the inner side of the gas-filled layer 13 at 120°. The annular grooves on the surface are matched.

Further, the variable stiffness hose 1 further includes a steel wire layer, the steel wire layer is arranged between the inflatable layer 13 and the outer elastomer layer 15 , the steel wire layer includes a plurality of steel wires 14 , and the steel wires 14 are wrapped in the inflatable air along the length direction of the variable stiffness hose 1 . Layer 13 exterior.

Further, the inner insulator layer 11 adopts a rubber layer, and the inner insulator layer 11 is made of rubber material.

Further, the outer elastomer layer 15 is made of rubber material.

Further, the support frame 3 includes a center ring, an outer ring and four rib plates, the outer ring is coaxially sleeved outside the center ring, and the four rib plates are arranged in a circular array on the center ring and the outer ring. Between the rings, one end of the rib is connected to the outer side of the center ring, the other end of the rib is fixedly connected to the inner side of the outer ring, and the inner hole of the center ring is the shaft hole matched with the rotary joint 4 .

Further, the inner diameter of the outer ring is equal to the inner diameter of the capstan 2 , the outer diameter of the capstan 2 is smaller than the outer diameter of the outer ring, and the outer ring is connected to the capstan 2 by welding.

Compared with the prior art, the present invention has the following effects:

1. The external power supply of the aerial refueling device with a gas-driven variable stiffness hose of the present invention drives the air pump 8 to inflate and deflate the inflatable layer 13 in the variable stiffness hose 1 through the power cord 9. The occlusion of the tooth layer 12 and the meshing teeth 16 realizes the time-domain variable stiffness of the variable stiffness hose 1, so that the variable stiffness hose 1 has a lower stiffness in the retraction stage to facilitate retraction, and a higher stiffness in the docking stage to reduce external disturbances. The stability and safety of the variable stiffness hose 1 can be improved. When the air pressure in the inflatable layer 13 is low, the distance between the meshing teeth 16 and the inner tooth layer 12 is relatively far, the degree of engagement between the meshing teeth 16 and the inner tooth layer 12 is low, and the stiffness is low, and the variable stiffness hose 1 is flexible as a whole. It is convenient for the coiling disc to be placed on the winch 2; when the air pump 8 works, the air pressure in the inflatable layer 13 is higher, the distance between the meshing teeth 16 and the inner tooth layer 12 is shortened, the degree of engagement between the meshing teeth 16 and the inner tooth layer 12 is improved, and the rigidity is higher. , the stability of the variable stiffness hose 1 is enhanced.

2. The three rows of meshing teeth 16 of the air refueling device with a gas-driven variable stiffness hose of the present invention are arranged at intervals of 120°, which can obtain a relatively uniform anti-bending effect in all directions, and can avoid the multiple rows of meshing teeth 16. interference.

3. A steel wire 14 is arranged between the outer elastomer layer 15 and the inflatable layer 13 of the variable stiffness hose 1 of the air refueling device with a gas-driven variable stiffness hose of the present invention, and the variable stiffness hose 1 realizes the change in stiffness at the same time. It maintains high reliability, has certain bending rigidity and high tensile strength, and can reduce the elongation rate of the variable rigidity hose 1 under aerodynamic force.

4. The outer elastomer layer 15 of the variable stiffness hose 1 of the air refueling device with the gas-driven variable stiffness hose of the present invention adopts a rubber layer, which has good elasticity, and can maintain its shape under large tensile force. Gas-driven variable stiffness hose 1 profile.

5. The inner insulator layer 11 of the inner layer of the variable stiffness hose 1 of the air refueling device with the gas-driven variable stiffness hose of the present invention adopts a rubber layer, which has a good insulating effect.

6. The rotary joint 4 of the aerial refueling device with a gas-driven variable stiffness hose of the present invention is rotatably connected with the support frame 3 through the shaft hole of the central ring, and the variable stiffness hose 1 is fixedly supported on one side of the winch 2 through the guide hole The frame 3 is drawn out, and the four rib plates are arranged at an interval of 90°, which is relatively strong. When the winch 2 rotates, the torsion of the variable-rigidity hose 1 can be reduced.

7. The rotary joint 4 of the aerial refueling device with the gas-driven variable stiffness hose of the present invention is rotatably connected to the support frame 3 through the shaft hole of the central ring, and the variable stiffness hose 1 is fixedly supported on one side of the winch 2 through the guide hole The frame 3 is drawn out, and the four rib plates are arranged at an interval of 90°, which is relatively strong. When the winch 2 rotates, the torsion of the variable-rigidity hose 1 can be reduced.

Description of drawings

1 is an axonometric view of an aerial refueling device with a gas-driven variable stiffness hose of the present invention;

Fig. 2 is the right side view of Fig. 1;

3 is a schematic cross-sectional view of the variable stiffness hose 1 of the present invention;

FIG. 4 is a schematic longitudinal cross-sectional view of the variable stiffness hose 1 of the present invention.

Detailed ways

Embodiment 1: This embodiment will be described with reference to FIG. 1 to FIG. 4. An aerial refueling device with a gas-driven variable stiffness hose in this embodiment includes a variable stiffness hose 1, a winch 2, a support frame 3, Rotary joint 4, valve 5, oil pipeline 6, gas conduit 7, air pump 8, power line 9 and umbrella cone 10, the capstan 2 is a cylindrical structure, the outer cylindrical surface of the capstan 2 is provided with a guide hole, the capstan 2 is vertically arranged, supporting The number of racks 3 is two, and the two support racks 3 are vertically opposite to the left and right ends of the winch 2 and are integrally connected with the winch 2. The center of each support rack 3 is provided with a shaft hole, and one end of the rotary joint 4 is rotated and installed. In the shaft hole of the support frame 3 on one side, the variable stiffness hose 1 is wound on the winch 2 before being released. After bending, it is connected to the rotary joint 4 through the shaft hole of the support frame 3. The other end of the rotary joint 4 is connected to the valve 5, the valve 5 is connected to the oil pipeline 6, the tail of the variable stiffness hose 1 is connected to the umbrella cone 10, and the variable stiffness hose 1 includes an inner insulator layer. 11. The inner tooth layer 12, the inflatable layer 13, the outer elastomer layer 15 and several meshing tooth groups, the inner insulator layer 11, the inner tooth layer 12, the inflatable layer 13 and the outer elastomer layer 15 are all circular tubular structures. The tooth layer 12 , the inflatable layer 13 and the outer elastomer layer 15 are sequentially sleeved on the outside of the inner insulator layer 11 from the inside to the outside, and the outer surface of the inner tooth layer 12 is uniformly formed with a number of annular tooth slots from front to back along the length direction. Several meshing tooth groups are arranged between the inflatable layer 13 and the inner tooth layer 12 and are arranged in a one-to-one correspondence with a number of annular tooth grooves on the inner tooth layer 12 . One end of the capstan 2 is connected to the gas conduit 7, and one end of the gas conduit 7 is connected to the sealing cavity of the inflation layer 13 of the variable stiffness hose 1. The air pump 8 is installed on the outer end surface of the support frame 3 near the side of the rotary joint 4, and the other end of the gas conduit 7 It is connected to the air pump 8 , and the external power supply is connected to the air pump 8 through the power cord 9 .

The inflatable layer 13 in this embodiment is a flexible inflatable layer, the flexible inflatable layer is made of silica gel, the inflatable layer 13 is connected to the air pump 8, the air pump 8 inflates and deflates the inflatable layer 13, and the inflatable layer 13 engages the teeth after being bulged. The position of 16 moves inward and the engagement degree of the inner tooth layer 12 increases, so that the stiffness of the variable stiffness hose 1 increases, and the stiffness control of the variable stiffness hose 1 can be realized by controlling the air pressure in the inflation layer 13 .

The air refueling device with the gas-driven variable stiffness hose of the present embodiment is connected to the oil pipeline 6 through the valve 5, the valve 5 is closed during the docking stage, and the air refueling device with the gas-driven variable stiffness hose does not contain fuel. , and then open valve 5 to add fuel, which has high safety.

Embodiment 2: This embodiment is described with reference to FIG. 3 and FIG. 4 . Each meshing tooth group in this embodiment includes three meshing teeth 16 , and three meshing teeth 16 are installed inside the gas-filled layer 13 at 120°. 16 is an arc-shaped sheet structure, and the meshing teeth 16 are matched with the annular tooth grooves on the outer surface of the inner tooth layer 12 . In this way, the three rows of meshing teeth 16 are arranged at intervals of 120°, so that a relatively uniform anti-bending effect can be obtained in all directions, and interference between the multiple rows of meshing teeth 16 can be avoided. Other components and connection relationships are the same as in the first embodiment.

3 and 4, the variable stiffness hose 1 of this embodiment further includes a steel wire layer, the steel wire layer is arranged between the inflatable layer 13 and the outer elastomer layer 15, and the steel wire layer includes several A steel wire 14 is wrapped around the outside of the inflatable layer 13 along the length direction of the variable stiffness hose 1 . In this way, the steel wire 14 is arranged between the outer elastomer layer 15 and the inflatable layer 13 of the variable stiffness hose 1, and the variable stiffness hose 1 maintains high reliability while realizing stiffness changes, and has a certain bending stiffness And the larger tensile strength can reduce the elongation of the variable stiffness hose 1 under aerodynamic force. Other compositions and connection relationships are the same as in the first or second embodiment.

Embodiment 4: This embodiment will be described with reference to FIG. 3 and FIG. 4 . The inner insulator layer 11 of this embodiment adopts a rubber layer, and the inner insulator layer 11 is made of rubber material. In this way, the inner insulator layer 11 of the inner layer of the variable stiffness hose 1 adopts a rubber layer, which has a better insulating effect. Other compositions and connection relationships are the same as in the first, second or third embodiment.

Embodiment 5: This embodiment will be described with reference to FIG. 3 and FIG. 4 . The outer elastic body layer 15 of this embodiment is made of rubber material. In this way, the outer elastomer layer 15 of the outer layer of the variable stiffness hose 1 is a rubber layer, which has good elasticity and can maintain its shape under relatively large tensile force, maintaining the shape of the gas driven variable stiffness hose 1 . Other compositions and connection relationships are the same as in the first, second, third or fourth embodiment.

Embodiment 6: This embodiment will be described with reference to FIG. 1 and FIG. 2. The support frame 3 of this embodiment includes a center ring, an outer ring and four ribs, and the outer ring is coaxially sleeved outside the center ring, Four rib plates are arranged between the central ring and the outer ring in an annular array, one end of the rib is connected to the outer side of the central ring, the other end of the rib is fixed to the inner side of the outer ring, and the center ring is connected to the inner side of the outer ring. The inner hole is the shaft hole matched with the rotary joint 4 . In this way, the rotary joint 4 is rotatably connected with the support frame 3 through the shaft hole of the central ring, the variable stiffness hose 1 is led out through the guide hole through the support frame 3 fixed on one side of the winch 2, and the four ribs are arranged at 90° intervals, which is relatively Robust, the twist of the variable stiffness hose 1 is reduced when the winch 2 rotates. Other compositions and connection relationships are the same as in the first, second, third, fourth or fifth embodiment.

Embodiment 7: This embodiment will be described with reference to FIG. 1 and FIG. 2. The inner diameter of the outer ring of this embodiment is equal to the inner diameter of the capstan 2, the outer diameter of the capstan 2 is smaller than the outer diameter of the outer ring, and the outer ring is welded way to connect with winch 2. Other compositions and connection relationships are the same as in the first, second, third, fourth, fifth or sixth embodiment.

The above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The recorded technical solutions are modified, or some technical features thereof are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

working principle

The working principle of the air refueling device with a gas-driven variable-stiffness hose of the present invention will be described with reference to FIGS. 1 to 4 : in the retraction stage, the valve 5 and the air pump 8 are both closed, and the winch 2 rolls to release the variable-stiffness hose 1 slowly, At this time, the air pressure of the inflation layer 13 is relatively low, and the variable-rigidity hose 1 is relatively low and flexible. After the variable stiffness hose 1 is released to a certain length, the valve 5 is still closed, the air pump 8 is turned on, the air pressure in the inflatable layer 13 increases, the flexible inflatable layer 13 bulges, the three rows of meshing teeth 16 move inward, and the meshing teeth 16 and the inner tooth layer 12. The degree of occlusion is improved, the stiffness of the variable stiffness hose 1 is improved, and the stability of the variable stiffness hose 1 is improved. After the oil receiver is successfully docked, the air pump 8 is closed, the valve 5 is opened, the variable stiffness hose 1 is restored to flexibility, and the fuel is added to the oil receiver through the variable stiffness hose 1. After the fuel filling is completed, the valve 5 is closed, the air pump 8 is closed, and the winch 2 rolls to slowly recover the variable stiffness hose 1.

Claims (7)

1. The utility model provides an aerial filling device with gaseous drive becomes rigidity hose which characterized in that: it is including becoming rigidity hose (1), capstan winch (2), support frame (3), rotary joint (4), valve (5), defeated oil pipe (6), gas conduit (7), air pump (8), power cord (9) and umbrella awl (10), capstan winch (2) are cylindric structure, the guide hole is seted up to the outer face of cylinder of capstan winch (2), capstan winch (2) vertical setting, the quantity of support frame (3) is two, two support frame (3) vertical relative settings are in the left and right sides both ends of capstan winch (2) and are connected with capstan winch (2) integral type, the shaft hole is all seted up at the center of every support frame (3), rotary joint (4) one end is rotated and is installed in the shaft hole of one side support frame (3), become rigidity hose (1) and twine on capstan winch (2) before emitting, become inside the guide hole entering capstan winch (2) of rigidity hose (1) head end through the guide hole, become rigidity hose (1) after being in the inside one end bending of capstan winch (2) through the shaft hole and rotary joint (3) of support frame (3), become rigidity hose (1) (4) The connection, the other end of the rotary joint (4) is connected with the valve (5), the valve (5) is connected with the oil delivery pipe (6), the tail part of the variable stiffness hose (1) is connected with the umbrella cone (10), the variable stiffness hose (1) comprises an inner insulator layer (11), an inner tooth layer (12), an inflation layer (13), an outer elastomer layer (15) and a plurality of meshing tooth groups, the inner insulator layer (11), the inner tooth layer (12), the inflation layer (13) and the outer elastomer layer (15) are all of a circular tubular structure, the inner tooth layer (12), the inflation layer (13) and the outer elastomer layer (15) are sequentially sleeved outside the inner insulator layer (11) from inside to outside, the outer surface of the inner tooth layer (12) is sequentially and uniformly provided with a plurality of annular tooth grooves from front to back along the length direction, the plurality of meshing tooth groups are all arranged between the inflation layer (13) and the inner tooth layer (12) and are in one-to-one correspondence with the annular tooth grooves on the inner tooth layer (12), the inner part of the inflation layer (13) is provided with a sealing cavity, the variable-rigidity hose (1) is positioned at one end of the winch (2) and connected with the gas guide pipe (7), one end of the gas guide pipe (7) is communicated with the sealing cavity of the inflation layer (13) of the variable-rigidity hose (1), the air pump (8) is installed on the outer end face of the support frame (3) close to one side of the rotary joint (4), the other end of the gas guide pipe (7) is connected with the air pump (8), and the external power supply is connected with the air pump (8) through a power line (9).

2. An aerial refueling unit with a gas-driven variable stiffness hose as claimed in claim 1, wherein: each meshing tooth group comprises three meshing teeth (16), the inner side of the inflatable layer (13) is provided with three meshing teeth (16) at an angle of 120 degrees, the meshing teeth (16) are of arc-shaped sheet structures, and the meshing teeth (16) are matched with annular tooth grooves on the outer surface of the inner tooth layer (12).

3. An aerial refueling unit with a gas-driven variable stiffness hose as claimed in claim 1 or 2, wherein: become rigidity hose (1) and still include the steel wire layer, and the steel wire layer sets up between inflatable layer (13) and outer elastomer layer (15), and the steel wire layer includes a plurality of steel wire (14), and steel wire (14) are along becoming rigidity hose (1) length direction parcel outside inflatable layer (13).

4. An aerial refueling unit with a gas-driven variable stiffness hose as claimed in claim 3, wherein: the inner insulator layer (11) is made of a rubber material.

5. An aerial refueling unit with a gas-driven variable stiffness hose as claimed in claim 4, wherein: the outer elastomer layer (15) is made of a rubber material.

6. An aerial refueling unit with a gas-driven variable stiffness hose as claimed in claim 5, wherein: the supporting frame (3) comprises a central ring, an outer ring and four rib plates, the outer ring is coaxially sleeved outside the central ring, the four rib plates are arranged between the central ring and the outer ring in an annular array mode, one end of each rib plate is connected with the outer side face of the central ring, the other end of each rib plate is fixedly connected with the inner side face of the outer ring, and an inner hole of the central ring is a shaft hole matched with the rotary joint (4).

7. An aerial refueling unit with a gas-driven variable stiffness hose as claimed in claim 6, wherein: the inner diameter of the outer ring is equal to that of the winch (2), the outer diameter of the winch (2) is smaller than that of the outer ring, and the outer ring is connected with the winch (2) in a welding mode.

Images