Electric filling device for filling hydraulic damper of helicopter and interface structure of electric filling device

Abstract

The utility model relates to the field of aircraft maintenance equipment, in particular to an electric filling device for filling a hydraulic damper of a helicopter and an interface structure of the electric filling device, which comprise a shell, an oil storage container, an electric pump, an electric pump control module, a handle, a battery, a switch, an observation window, an output pipe and a positioning unit, the oil storage container is fixed at the upper end of the shell, and the electric pump is fixed at the rear end of the shell; the problem that in the background technology, a common hydraulic oil filling method is completed mainly depending on a manual pump hydraulic device can be solved. The traditional equipment is generally large in size and is not suitable for being operated in an external field or a limited space. In addition, the equipment generally lacks flow regulation and control, excessive oil is easy to fill in the filling process, the maintenance efficiency is influenced, and the equipment is possibly polluted. Especially when maintenance and guarantee tasks need to be quickly executed on a maintenance site, a traditional filling device has the defects of being tedious in process, difficult in butt joint and the like, and the efficient, reliable and accurate guarantee requirements of modern aviation equipment are difficult to meet.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of aircraft maintenance equipment, especially is used for electric filling device and interface structure thereof of helicopter hydraulic damper filling. BACKGROUND

[0002] Hydraulic damper is one of the core components in the rotor system of modern helicopters, and is widely used in the connecting structure between the hub and the blade. Its main function is to provide additional fluid damping force and a certain degree of flexible support for the flapping motion of the rotor blade, so as to suppress the beat vibration and phase difference fluctuation of the blade relative to the hub. Through the energy dissipation effect of the fluid flow in the damper, the coupling phenomenon between the inherent frequency of the structure and the external excitation is effectively alleviated, and dangerous resonance modes are prevented, especially to prevent "ground resonance" during take-off and landing and avoid "air resonance" during flight.

[0003] The hydraulic damper is composed of a high-strength sealed shell, a piston assembly, an internal oil cavity and a damping hole, and its performance is highly dependent on the filling state and sealing integrity of the internal hydraulic oil. With the increase of flight cycles and long-term operation under high-frequency variable load environment, the hydraulic damper is prone to problems such as oil consumption, oil temperature rise and seal aging, which in turn leads to internal hydraulic oil leakage or deficiency. Once the hydraulic oil level is not replenished in time, it will directly affect the damping force provided by the damper, reduce the damping performance of the rotor system, and further cause local strong vibration of the machine body, accelerate structural fatigue and flight safety hazards.

[0004] Therefore, during the daily maintenance and inspection of the helicopter, the hydraulic oil state of the hydraulic damper needs to be checked and maintained regularly. At present, the commonly used hydraulic oil filling method mainly relies on manual pump hydraulic device to complete. This kind of traditional equipment is usually large in size, complex in structure, inconvenient to carry and not suitable for operation in the field or limited space. In addition, such equipment generally lacks functions such as flow control, pressure feedback and oil display, and is prone to problems such as excessive oil filling and oil leakage during filling, which not only affects the maintenance efficiency, but also may contaminate the equipment. Especially when the maintenance support task needs to be quickly executed in the field, the traditional filling device has the disadvantages of complicated process, slow response and difficult docking, which is difficult to meet the efficient, reliable and precise support needs of modern aviation equipment.

[0005] Therefore, it is urgent to develop a portable hydraulic oil filling device with compact structure, light weight, strong adaptability and precise oil quantity control, which has the characteristics of handheld operation, electric drive, automatic stop and visual feedback, to meet the on-site rapid maintenance needs of the hydraulic damper in the rotor system of the helicopter, improve the filling efficiency and operation safety, and ensure the smooth execution of the flight task and the reliable maintenance of the equipment state. SUMMARY

[0006] The utility model discloses a purpose is to solve the above -mentioned problem of prior art, provide for the electric filling device and interface structure of filling for helicopter hydraulic damper.

[0007] Electric filling device and interface structure for filling for helicopter hydraulic damper, including: including: casing, oil storage container, electric pump, electric pump control module, handle, battery, switch, observation window, output pipe and positioning unit, the casing upper end is fixed with oil storage container, the casing rear end is fixed with electric pump, the casing inside fixed with electric pump control module, electric pump control module is connected with electric pump signal, the casing lower end is provided with handle, the handle lower end is detachably fixed with battery, the battery is connected with electric pump and electric pump control module through wire, the casing is provided with switch, and the switch is connected between electric pump control module and battery through wire, the output pipe is provided with observation window, and the output pipe is fixedly communicated with oil storage container through electric pump, and the output pipe front end is detachably fixed with positioning unit.

[0008] The oil storage container upper end is provided with the oil filler, and the oil filler is provided with a threaded screw cap.

[0009] The electric pump tail portion is provided with a dust screen and a heat dissipation opening.

[0010] The positioning unit includes: shell, opening one, opening two, top silk, annular limit board one, annular limit board two, guide column, spring, fixed sleeve, sliding rod and thimble, the shell top is provided with opening one, the shell bottom is provided with opening two, the shell is provided with top silk and is screwed, the top silk is symmetrically provided with two, the shell inside fixed with annular limit board one and annular limit board two, the annular limit board one is located below the annular limit board two, the vertical fixed guide column is fixed on the inner top surface of the shell and the top surface of annular limit board two, the spring is sleeved on the guide column, the guide column and the spring are symmetrically provided with two, the fixed sleeve is fixed with bearing inside, the fixed sleeve both ends are symmetrically fixed with sliding rod, two sliding rods are respectively connected with two guide columns, the thimble passes through opening one and is fixed in the bearing in the fixed sleeve, the output pipe is detachably screwed with the thimble, the thimble upper end is provided with internal thread, and the thimble middle part is provided with external thread.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The utility model provides a be used for the electric filling device and interface structure thereof for the filling of helicopter hydraulic damper, can solve the background art proposed: the common hydraulic oil filling method mainly depends on the manual pump hydraulic device to complete, this kind of traditional equipment is usually bulky, complex structure, inconvenient to carry, is not suitable for operating in the field or limited space, in addition, this kind of equipment generally lacks flow control, pressure feedback and oil display functions, and problems such as excessive oil filling and oil leakage are prone to occur during the filling process, which not only affects the maintenance efficiency, but also may contaminate the equipment. Especially when the maintenance support task needs to be quickly performed in the maintenance field, the traditional filling device has the disadvantages of complicated process, slow response and difficult docking, which cannot meet the efficient, reliable and accurate support requirements of modern aviation equipment. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the overall structure schematic diagram of the utility model;

[0014] Figure 2 It is the positioning unit structure schematic diagram. DETAILED DESCRIPTION

[0015] The technical scheme in the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments, based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range protected by the utility model.

[0016] The electric filling device and interface structure thereof for the filling of helicopter hydraulic damper, comprising: casing 1, oil storage container 2, electric pump 3, electric pump control module 4, handle 5, battery 6, switch 7, observation window 8, output pipe 9 and positioning unit 10, the oil storage container 2 is fixed on the upper end of casing 1, the electric pump 3 is fixed on the rear end of casing 1, the electric pump control module 4 is fixed in the casing 1, the electric pump control module 4 is signal connected with electric pump 3, the handle 5 is arranged at the lower end of casing 1, the battery 6 is detachably fixed at the lower end of handle 5, the battery 6 is connected with electric pump 3 and electric pump control module 4 through wires, the switch 7 is arranged on the casing 1, the switch 7 is connected between the electric pump control module 4 and battery 6 through wires, the observation window 8 is arranged on the output pipe 9, the output pipe 9 is fixedly communicated between electric pump 3 and oil storage container 2, the positioning unit 10 is detachably fixed at the front end of output pipe 9.

[0017] As a preferred technical scheme, the oil storage container 2 is provided with an oil filling port at the upper end, the oil filling port is provided with a threaded screw cap, and a sealing ring is arranged on the threaded screw cap.

[0018] The electric pump 3 is provided with a dustproof net and a heat dissipation opening at the tail.

[0019] The positioning unit 10 comprises a shell 10-1, an opening one 10-2, an opening two 10-3, a jackscrew 10-4, an annular limiting plate one 10-5, an annular limiting plate two 10-6, a guide column 10-7, a spring 10-8, a fixing sleeve 10-9, a sliding rod 10-10 and a thimble 10-11, the shell 10-1 is provided with the opening one 10-2 at the top, the shell 10-1 is provided with the opening two 10-3 at the bottom, the jackscrew 10-4 is screw-connected to the shell 10-1, the jackscrew 10-4 is symmetrically arranged as two, the annular limiting plate one 10-5 and the annular limiting plate two 10-6 are fixedly arranged in the shell 10-1, the annular limiting plate one 10-5 is below the annular limiting plate two 10-6, the guide column 10-7 is vertically fixed to the inner top surface of the shell 10-1 and the top surface of the annular limiting plate two 10-6, the spring 10-8 is sleeved on the guide column 10-7, the guide column 10-7 and the spring 10-8 are symmetrically arranged as two, the bearing is fixedly arranged in the fixing sleeve 10-9, the sliding rod 10-10 is symmetrically fixed to the two ends of the fixing sleeve 10-9, the two sliding rods 10-10 are slidably connected with the two guide columns 10-7 respectively, the thimble 10-11 penetrates through the opening one 10-2 and is fixed in the bearing in the fixing sleeve 10-9, the output pipe 9 is detachably screw-connected with the thimble 10-11, the inner thread is arranged on the upper end of the thimble 10-11, and the outer thread is arranged on the middle part of the thimble 10-11.

[0020] The working principle of the utility model is:

[0021] When in use, oil is injected into the oil storage container 2 and the screw cap is screwed, then the damper oil filler is penetrated into the opening two 10-3, and the annular limiting plate one 10-5 is abutted on the top surface of the damper oil filler to realize positioning, then the jackscrews 10-4 at two ends are screwed, the shell 10-1 is fixed, the thimble 10-11 is penetrated into the valve core of the damper oil filler, and the thimble 10-11 is screwed into the valve core of the damper oil filler through the outer thread to realize fixing, meanwhile, when the thimble 10-11 is screwed into the valve core of the damper oil filler, the thimble 10-11 drives the sliding rod 10-10 to slide downwards along the guide column 10-7 through the fixing sleeve 10-9, and the spring 10-8 is compressed, and the spring 10-8 plays the role of auxiliary reset of the thimble 10-11;

[0022] Then open the switch 7, through the battery 6 to the electric pump control module 4 preferably the type of IGBT power chopping module power, control electric pump 3 start, electric pump 3 start will be oil tank 2 in the oil pumping, and through the output pipe 9 output to the needle 10-11, oil through the needle 10-11 and damper oil port input to the damper, the observation window 8 can observe whether the oil bubble and oil position, with oil injection into the damper, the damper oil port spool moves outward, until the spool top on the annular limiting plate two 10-6, close the switch 7 complete filling, unscrew the top screw 10-4, the needle 10-11 is down, then the shell 10-1 can be removed. Shell 10-1 material is transparent acrylic material, through the setting of annular limiting plate two 10-6 can avoid the damper oil filling excess phenomenon, the spool moves to drive the needle 10-11, fixed sleeve 10-9 and sliding rod 10-10 along the guide post 10-7 upward. Through the control of electric pump 3 speed can control the flow and flow rate of filling.

[0023] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, the specification of this way of narration is only for the sake of clarity, the person skilled in the art should be regarded as a whole, the technical solution in each embodiment can also be combined appropriately, form other embodiments that the person skilled in the art can understand.

Claims

1. An electric refilling device for refilling a hydraulic damper of a helicopter and an interface structure thereof, characterized in that: Include: The shell (1), oil storage container (2), electric pump (3), electric pump control module (4), handle (5), battery (6), switch (7), observation window (8), output pipe (9) and positioning unit (10), the upper end of the shell (1) is fixed with oil storage container (2), the rear end of the shell (1) is fixed with electric pump (3), the inside of the shell (1) is fixed with electric pump control module (4), the electric pump control module (4) is signal connected with electric pump (3), the lower end of the shell (1) is provided with handle (5), the lower end of the handle (5) is detachably fixed with battery (6), the battery (6) is connected with electric pump (3) and electric pump control module (4) through wire, the shell (1) is provided with switch (7), the switch (7) is connected between the electric pump control module (4) and the battery (6) through wire, the output pipe (9) is provided with observation window (8), the output pipe (9) is fixedly communicated through electric pump (3) between the output pipe (9) and the oil storage container (2), the output pipe (9) is detachably fixed with positioning unit (10) at the front end.

2. The electric refilling device for refilling the hydraulic dampers of a helicopter and its interface structure according to claim 1, characterized in that: The upper end of the oil storage container (2) is provided with a filling port, and the filling port is provided with a threaded screw cap, and the threaded screw cap is provided with a sealing ring.

3. The electric refueling device for refueling the hydraulic dampers of a helicopter and its interface structure according to claim 1, characterized in that: The tail of the electric pump (3) is provided with a dust screen and a heat dissipation port.

4. The electric refueling device for refueling the hydraulic dampers of a helicopter and its interface structure according to claim 1, characterized in that: The positioning unit (10) comprises: a shell (10-1), an opening one (10-2), an opening two (10-3), a top screw (10-4), an annular limiting plate one (10-5), an annular limiting plate two (10-6), a guide column (10-7), a spring (10-8), a fixed sleeve (10-9), a sliding rod (10-10) and a thimble (10-11), the top of the shell (10-1) is provided with an opening one (10-2), the bottom of the shell (10-1) is provided with an opening two (10-3), the shell (10-1) is rotatably connected with the top screw (10-4), the top screw (10-4) is symmetrically provided as two, the shell (10-1) is fixedly provided with the annular limiting plate one (10-5) and the annular limiting plate two (10-6) inside, the annular limiting plate one (10-5) is located below the annular limiting plate two (10-6), the inner top surface of the shell (10-1) and the top surface of the annular limiting plate two (10-6) are vertically fixed with the guide column (10-7), the guide column (10-7) is sleeved with the spring (10-8), the guide column (10-7) and the spring (10-8) are symmetrically provided as two, the fixed sleeve (10-9) is fixedly provided with a bearing inside, the fixed sleeve (10-9) is symmetrically fixed with a sliding rod (10-10) at both ends, the two sliding rods (10-10) are respectively and slidably connected with the two guide columns (10-7), the thimble (10-11) penetrates through the opening one (10-2) and is fixed in the bearing in the fixed sleeve (10-9), the output pipe (9) and the thimble (10-11) are detachably and rotatably connected, the thimble (10-11) is provided with an internal thread at the upper end, and the thimble (10-11) is provided with an external thread at the middle.

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