Hydraulically-driven hard connection follow-up device for aerial refueling

Abstract

The utility model discloses a hydraulic drive hard connection follow-up device for aerial oil supply, which comprises an oil passing shaft joint, a rotating sleeve joint and a mounting shaft, a mounting cavity is arranged in the middle of the rotating sleeve joint, one end of the oil passing shaft joint extends into the mounting cavity and is fixedly connected with the mounting shaft, and the other end of the oil passing shaft joint is fixedly connected with the mounting shaft. The oil passing shaft joint and the mounting shaft are rotationally connected with the mounting cavity respectively; the other end of the mounting shaft extends out of the mounting cavity and is coaxially mounted with the rotating center of the hydraulic drive; the other end of the oil passing shaft connector is provided with a bent connector and a straight connector which are connected with two hydraulic oil ways of the aircraft end respectively, and one side of the rotating sleeve connector is provided with a flaring combined guide pipe and a branch pipe which are connected with oil ports of the releasing end and the withdrawing end of the hydraulic drive respectively. The mounting shaft is coaxial with the rotating center of the hydraulic drive, and the mounting shaft is fixedly connected with the oil passing shaft joint, so that the oil passing shaft joint connected with an airplane does not displace, and the rotating sleeve joint connected with the hydraulic drive synchronously rotates around the axis of the oil passing shaft joint along with the hydraulic drive; the follow-up function of the hydraulic hard connection mechanism in a narrow space is achieved, and good practicability is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aerial refueling equipment, and in particular relates to a hydraulically driven hard-connected follower device for aerial refueling. Background Art

[0002] When the aircraft is retracted and retracted in the air, the hydraulic actuator is extended to drive the connecting rod mechanism to release and retract the refueling probe. During the extension and retraction process, the hydraulic actuator swings in the direction of movement of the connecting rod mechanism. The hydraulic actuator is usually connected to the hydraulic system with a hose, in which the hose connection must ensure the minimum bending radius and the shortest length of the hose, and prevent the movement process from interfering with other structures. However, in the new refueling design, the installation space of the hydraulic drive is constantly compressed and the weight requirements are becoming more and more stringent. The existing hose connection solution cannot meet this demand. Utility Model Content

[0003] The purpose of the utility model is to provide a hydraulically driven hard-connected follower device for receiving oil in the air, aiming to solve the above problems. The utility model not only satisfies the reliability of the follow-up and joint connection with the hydraulic actuator, but also satisfies the sealing and maintainability of the follow-up joint.

[0004] The utility model is mainly realized through the following technical solutions:

[0005] A hard-connected follower device driven by hydraulic pressure for receiving oil in the air comprises an oil-through shaft joint, a rotating sleeve joint and a mounting shaft, a mounting cavity is opened in the middle of the rotating sleeve joint, one end of the oil-through shaft joint extends into the mounting cavity and is fixedly connected to the mounting shaft, the oil-through shaft joint and the mounting shaft are respectively rotatably connected to the mounting cavity; the other end of the mounting shaft extends out of the mounting cavity and is coaxially mounted on the rotation center of the hydraulic drive; the other end of the oil-through shaft joint is provided with an elbow joint and a straight joint respectively connected to the two hydraulic oil circuits at the aircraft end, and one side of the rotating sleeve joint is provided with an expanded combined conduit and a branch pipe respectively connected to the oil ports at the discharge end and the retraction end of the hydraulic drive; a first communicating cavity and a second communicating cavity which are sealed and separated are correspondingly formed between the oil-through shaft joint and the mounting cavity, the expanded combined conduit is connected to the elbow joint through the first communicating cavity, and the branch pipe is connected to the straight joint through the second communicating cavity.

[0006] In order to better realize the utility model, further, the oil-through shaft joint includes an oil-through shaft body, and the middle part of the oil-through shaft body is provided with a first through hole and a second through hole respectively connected with the bent joint and the straight joint, and the side walls of the oil-through shaft body at the bottom of the first through hole and the second through hole are provided with a first connecting oil groove and a second connecting oil groove correspondingly along the circumferential side, and a first connecting cavity is formed between the first through hole, the first connecting oil groove and the mounting cavity, and a second connecting cavity is formed between the second through hole, the second connecting oil groove and the mounting cavity; the mounting cavity between the first connecting oil groove and the second connecting oil groove is sealed and connected to the oil-through shaft body.

[0007] In order to better implement the present utility model, further, the tops of the first through hole and the second through hole are opened respectively, and plugs are embedded in the openings.

[0008] In order to better realize the utility model, further, sealing mechanisms are respectively arranged on the outer sides of the first connecting oil groove and the second connecting oil groove and between the mounting cavity between the first connecting oil groove and the second connecting oil groove and the oil shaft body, and the sealing mechanism includes a sealing ring and a protective ring arranged in sequence.

[0009] In order to better realize the utility model, further, the sealing mechanism on the outer side of the first connecting oil groove and the second connecting oil groove includes a sealing ring and a protective ring connected in sequence from the inside to the outside, and the sealing mechanism between the first connecting oil groove and the second connecting oil groove includes two protective rings and a sealing ring located between adjacent protective rings.

[0010] In order to better realize the utility model, further, one end of the oil-through shaft body extends into the installation cavity and is fixedly connected to the installation shaft, and an elastic shaft protection ring is provided between one end of the oil-through shaft body and the installation cavity.

[0011] In order to better realize the utility model, further, the rotating sleeve joint includes a rotating sleeve and a joint unit, the interior of the rotating sleeve is provided with an installation cavity, one side of the rotating sleeve is provided with a joint unit, one side of the joint unit is provided with a first installation joint and a second installation joint respectively connected to the first connecting cavity and the second connecting cavity, the first installation joint and the second installation joint are respectively connected to the flared combined conduit and the branch pipe.

[0012] In order to better implement the present invention, further, one end of the branch pipe is plug-connected with the second installation joint, and sealing mechanisms are respectively sleeved and installed on the outer sides of the two connection ends of the branch pipe.

[0013] In order to better realize the utility model, further, a stop washer is installed on the outer side of the free end of the branch pipe, and the stop washer is fixedly connected to the hydraulic drive through a screw.

[0014] In order to better realize the utility model, further, the flared combined catheter includes an outer sleeve nut, a flat pipe nozzle and a catheter, the two ends of the catheter are respectively provided with flat pipe nozzles, and the free end of the flat pipe nozzle is provided with an outer sleeve nut; the first mounting joint is connected to the flat pipe nozzle at one end of the catheter through the outer sleeve nut.

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

[0016] The installation shaft of the utility model is coaxial with the rotation center of the hydraulic drive, and the installation shaft is fixedly connected to the oil-through shaft joint, so that the oil-through shaft joint connected to the aircraft does not move, and the rotating sleeve joint connected to the hydraulic drive rotates synchronously with the hydraulic drive around the axis of the oil-through shaft joint, realizing the follow-up function of the hydraulic hard connection mechanism in a small space. Compared with the existing hose connection structure, the utility model reduces the number of parts and reduces the weight; since the utility model does not need to consider the minimum bending radius and the shortest length of the hydraulic hose, it effectively saves the installation space of the oil receiving device and has good practicality; secondly, the maintenance cost of the utility model is the sealing ring and the protective ring, which effectively saves costs; and the service life of the utility model is effectively extended, and it is easy to disassemble and assemble, which greatly improves the maintainability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the hydraulically driven hard-connected follower mechanism for receiving oil in the air of the utility model;

[0018] Figure 2 It is a top view of the hydraulically driven hard-connected follower mechanism for receiving oil in the air of the utility model;

[0019] Figure 3 for Figure 2 AA section diagram.

[0020] Figure 4 The utility model is a schematic diagram of the working structure of a hydraulically driven hard-connected follower mechanism for receiving oil in the air.

[0021] Among them: 1- oil shaft joint, 2- flared combined conduit, 3- screw, 4- stop gasket, 5- branch pipe, 6- rotating sleeve joint, 7- mounting shaft, 8- elbow joint, 9- oil shaft body, 10- plug, 11- straight joint, 12- outer sleeve nut, 13- flat nozzle, 14- conduit, 15- rotating sleeve, 16- protection ring, 17- sealing ring, 18- elastic protection ring for shaft, 19- joint unit, 20- hydraulic actuator. DETAILED DESCRIPTION

[0022] Embodiment 1:

[0023] A hard-connected follower device driven by hydraulic pressure in the air, such as Figure 1As shown, it includes an oil-through shaft joint 1, a rotating sleeve joint 6 and a mounting shaft 7. A mounting cavity is opened in the middle of the rotating sleeve joint 6. One end of the oil-through shaft joint 1 extends into the mounting cavity and is fixedly connected to the mounting shaft 7. The oil-through shaft joint 1 and the mounting shaft 7 are respectively rotatably connected to the mounting cavity; the other end of the mounting shaft 7 extends out of the mounting cavity and is coaxially installed with the rotation center of the hydraulic drive.

[0024] The other end of the oil-through shaft joint 1 is provided with an elbow joint 8 and a straight joint 11 respectively connected to the two hydraulic oil circuits at the aircraft end, and one side of the rotating sleeve joint 6 is provided with an expanded combined conduit 2 and a branch pipe 5 respectively connected to the oil ports of the hydraulically driven release end and the retracting end.

[0025] Preferably, the oil-through shaft joint 1 comprises an oil-through shaft body 9, the middle part of which is provided with a first through hole and a second through hole connected to the elbow joint 8 and the straight joint 11, respectively, and the side wall of the oil-through shaft body 9 at the bottom of the first through hole and the second through hole is provided with a first connecting oil groove and a second connecting oil groove along the circumferential side, respectively, the first through hole, the first connecting oil groove and the installation cavity form a first connecting cavity, the second through hole, the second connecting oil groove and the installation cavity form a second connecting cavity; the installation cavity between the first connecting oil groove and the second connecting oil groove is sealed and connected to the oil-through shaft body 9. The flared combined conduit 2 is connected to the elbow joint 8 through the first connecting cavity, and the branch pipe 5 is connected to the straight joint 11 through the second connecting cavity.

[0026] The installation shaft 7 of the utility model is coaxial with the rotation center of the hydraulic drive, and the installation shaft 7 is fixedly connected to the oil-through shaft joint 1, so that the oil-through shaft joint 1 connected to the aircraft does not shift, and the rotating sleeve joint 6 connected to the hydraulic drive rotates synchronously with the hydraulic drive around the axis of the oil-through shaft joint 1, thereby realizing the follow-up function of the hydraulic hard connection mechanism in a narrow space, and has good practicality.

[0027] Embodiment 2:

[0028] A hard-connected follower device driven by hydraulic pressure in the air, such as Figure 1-Figure 3 As shown, it includes an oil-through shaft joint 1, a flared combined conduit 2, a screw 3, a stop washer 4, a branch pipe 5, a rotating sleeve joint 6, a mounting shaft 7, a bent joint 8, an oil-through shaft body 9, a plug 10, a straight joint 11, a jacket nut 12, a flat nozzle 13, a conduit 14, a rotating sleeve 15, a protective ring 16, a sealing ring 17, and an elastic protective ring for the shaft 18. Figure 4 As shown, the hydraulic drive in this embodiment is a hydraulic actuator 20.

[0029] like Figure 3 and Figure 4As shown, the oil-through shaft joint 1 and the rotating sleeve joint 6 are connected through the shaft elastic protection ring 18, and the two can only rotate relative to each other. The installation shaft 7 is fixedly connected to the oil-through shaft joint 1 and is coaxial with the rotation center of the hydraulic cylinder 20. The installation shaft 7 is fixedly connected to the base of the oil receiving mechanism and has no rotational movement. The elbow joint 8 and the straight joint 11 on the oil-through shaft joint 1 are respectively connected to the two-way hydraulic joints at the aircraft end to ensure that the interface connected to the aircraft does not shift. The branch pipe 5 and the flared combined conduit 2 on the rotating sleeve joint 6 are respectively fixedly connected to the oil inlet at the discharge end and the retracting end of the hydraulic cylinder 20, so that the rotating sleeve joint 6 rotates synchronously with the hydraulic cylinder 20 around the axis of the oil-through shaft joint 1. When the branch pipe 5 and the flared combined conduit 2 rotate with the hydraulic cylinder 20, the rotating sleeve joint 6 is driven to rotate around the oil-through shaft joint 1, realizing the follow-up function of the hydraulic hard connection mechanism in a narrow space.

[0030] like Figure 1-Figure 3 As shown, the oil-through shaft joint 1 comprises a straight joint 11, an elbow joint 8, a plug 10 and an oil-through shaft body 9. The middle part of the oil-through shaft body 9 is provided with a first through hole and a second through hole connected to the elbow joint 8 and the straight joint 11 respectively. The plug 10 is provided at the top of the first through hole and the second through hole. The side wall of the oil-through shaft body 9 at the bottom of the first through hole and the second through hole is provided with a first connecting oil groove and a second connecting oil groove along the circumferential side. The first through hole, the first connecting oil groove and the installation cavity form a first connecting cavity, and the second through hole, the second connecting oil groove and the installation cavity form a second connecting cavity; the installation cavity between the first connecting oil groove and the second connecting oil groove is sealed and connected to the oil-through shaft body 9. The flared combined conduit 2 is connected to the elbow joint 8 through the first connecting cavity, and the branch pipe 5 is connected to the straight joint 11 through the second connecting cavity. The size and structure of the elbow joint 8 and the straight joint 11 can be designed according to the position of the hydraulic pipeline interface on the machine.

[0031] The plug 10 is welded to the oil-through shaft body 9 to seal the first through hole and the second through hole of the oil channel; sealing mechanisms are respectively provided between the outer sides of the first and second connecting oil grooves and the mounting cavity between the first and second connecting oil grooves and the oil-through shaft body 9. Preferably, the sealing mechanism includes a protective ring 16 and a sealing ring 17, which are assembled on the oil-through shaft body 9 to ensure the sealing of the two hydraulic channels for retracting and releasing on the oil-through shaft body 9. When the working pressure is greater than 15MPa, the protective ring 16 is added according to the aviation standard requirements, and the installation position of the protective ring 16 is determined according to the pressure direction.

[0032] The rotating sleeve joint 6 comprises a joint unit 19 and a rotating sleeve 15. The rotating sleeve 15 is provided with an installation cavity inside, and a joint unit 19 is provided on one side of the rotating sleeve 15. One side of the joint unit 19 is provided with a first installation joint and a second installation joint respectively connected to the first connecting cavity and the second connecting cavity. The first installation joint and the second installation joint are respectively connected to the flared combined conduit 2 and the branch pipe 5.

[0033] The flared combined conduit 2 comprises a conduit 14, a flat nozzle 13 and an outer sleeve nut 12, wherein the outer sleeve nut 12 and the flat nozzle 13 are standard parts, and the length and structural form of the conduit 14 are jointly determined by the retraction interface of the hydraulic actuator 20 and the internal space of the retractable oil receiving device.

[0034] The screw 3 and the stop washer 4 connect and fix the branch pipe 5 to the hydraulic cylinder 20, and constrain the axial movement of the hydraulic follower mechanism. Preferably, the two connecting ends of the branch pipe 5 are respectively equipped with a protective ring 16 and a sealing ring 17, and the branch pipe 5 and the first mounting joint are plug-in-type, and this structural form can be used to compensate for the dimensional deviation of the release interface and the rotation center of the hydraulic cylinder 20 caused by the threaded connection.

[0035] Compared with the existing hose connection structure, the utility model reduces the number of parts and reduces the weight; since the utility model does not need to consider the minimum bending radius and the shortest length of the hydraulic hose, the installation space of the oil receiving device is effectively saved, and the utility model has good practicality; secondly, the maintenance cost of the utility model is the sealing ring 17 and the protection ring 16, which effectively saves the cost; and the service life of the utility model is effectively extended, and the disassembly and assembly are convenient, which greatly improves the maintainability of the product.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A hydraulically driven hard-connected follower device for receiving oil in the air, characterized in that: The invention comprises an oil-passing shaft joint (1), a rotating sleeve joint (6) and a mounting shaft (7); a mounting cavity is provided in the middle of the rotating sleeve joint (6); one end of the oil-passing shaft joint (1) extends into the mounting cavity and is fixedly connected to the mounting shaft (7); the oil-passing shaft joint (1) and the mounting shaft (7) are respectively rotatably connected to the mounting cavity; the other end of the mounting shaft (7) extends out of the mounting cavity and is coaxially mounted with the rotation center of the hydraulic drive; the other end of the oil-passing shaft joint (1) is provided with an elbow joint (8) and a straight joint (11) respectively connected to two hydraulic oil circuits at the aircraft end; one side of the rotating sleeve joint (6) is provided with an expanded combined conduit (2) and a branch pipe (5) respectively connected to the oil ports at the discharge end and the retraction end of the hydraulic drive; a first communicating cavity and a second communicating cavity are correspondingly formed between the oil-passing shaft joint (1) and the mounting cavity, the expanded combined conduit (2) is connected to the elbow joint (8) through the first communicating cavity, and the branch pipe (5) is connected to the straight joint (11) through the second communicating cavity.

2. The hydraulically driven hard-connected follower device for receiving oil in the air according to claim 1 is characterized in that: The oil-through shaft joint (1) comprises an oil-through shaft body (9), a first through hole and a second through hole are arranged in parallel in the middle of the oil-through shaft body (9), the first through hole and the second through hole being connected to the bent joint (8) and the straight joint (11) respectively, a first connecting oil groove and a second connecting oil groove are arranged on the side wall of the oil-through shaft body (9) at the bottom of the first through hole and the second through hole, respectively, along the circumferential side, a first connecting oil groove and a second connecting oil groove are correspondingly arranged, a first connecting cavity is formed between the first through hole, the first connecting oil groove and the mounting cavity, and a second connecting cavity is formed between the second through hole, the second connecting oil groove and the mounting cavity; the mounting cavity between the first connecting oil groove and the second connecting oil groove is sealedly connected to the oil-through shaft body (9).

3. The hydraulically driven hard-connected follower device for receiving oil in the air according to claim 2, characterized in that: The tops of the first through hole and the second through hole are respectively open, and plugs (10) are embedded in the openings.

4. The hydraulically driven hard-connected follower device for receiving oil in the air according to claim 2, characterized in that: Sealing mechanisms are respectively provided on the outer sides of the first and second connecting oil grooves and between the mounting cavity between the first and second connecting oil grooves and the oil shaft body (9), the sealing mechanisms comprising a sealing ring (17) and a protective ring (16) which are arranged in sequence.

5. The hydraulically driven hard-connected follower device for receiving oil in the air according to claim 4, characterized in that: The sealing mechanism on the outer sides of the first connecting oil groove and the second connecting oil groove comprises a sealing ring (17) and a protective ring (16) connected in sequence from the inside to the outside, and the sealing mechanism between the first connecting oil groove and the second connecting oil groove comprises two protective rings (16) and a sealing ring (17) located between adjacent protective rings (16).

6. A hydraulically driven hard-connected follower device for receiving oil in the air according to any one of claims 2 to 5, characterized in that: One end of the oil-through shaft body (9) extends into the installation cavity and is fixedly connected to the installation shaft (7), and an elastic shaft protection ring (18) is provided between the one end of the oil-through shaft body (9) and the installation cavity.

7. The hydraulically driven hard-connected follower device for receiving oil in the air according to claim 1, characterized in that: The rotating sleeve joint (6) comprises a rotating sleeve (15) and a joint unit (19); a mounting cavity is provided inside the rotating sleeve (15); a joint unit (19) is provided on one side of the rotating sleeve (15); a first mounting joint and a second mounting joint are provided on one side of the joint unit (19), the first mounting joint and the second mounting joint being connected to the first connecting cavity and the second connecting cavity, respectively; the first mounting joint and the second mounting joint are connected to the flared combined conduit (2) and the branch pipe (5), respectively.

8. The hydraulically driven hard-connected follower device for receiving oil in the air according to claim 7, characterized in that: One end of the branch pipe (5) is plug-connected to the second installation joint, and sealing mechanisms are respectively sleeved and installed on the outer sides of the two connection ends of the branch pipe (5).

9. A hydraulically driven hard-connected follower device for receiving oil in the air according to claim 7 or 8, characterized in that: A stop washer (4) is installed on the outer side of the free end of the branch pipe (5), and the stop washer (4) is fixedly connected to the hydraulic drive via a screw (3).

10. The hydraulically driven hard-connected follower device for receiving oil in the air according to claim 7, characterized in that: The flared combined conduit (2) comprises an outer sleeve nut (12), a flat pipe nozzle (13) and a conduit (14); the two ends of the conduit (14) are respectively provided with flat pipe nozzles (13); the free end of the flat pipe nozzle (13) is provided with an outer sleeve nut (12); the first mounting joint is connected to the flat pipe nozzle (13) at one end of the conduit (14) via the outer sleeve nut (12).

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