Energy device integrating dual-channel motor pump and emergency pneumatic device

Abstract

The invention provides an integrated dual-channel motor pump and emergency pneumatic energy device which comprises a motor pump, a normally-open electromagnetic isolation valve, a normally-closed electromagnetic isolation valve, an electromagnetic on-off valve, a pressurizing oil tank, a hydraulic control one-way valve, a low-pressure pressure sensor, a high-pressure pressure sensor, a radiator, a one-way valve, a filter, a high-pressure safety valve, a one-way constant-speed valve, an emergency gas cylinder and an emergency valve. The device comprises an inflation assembly, a pneumatic pressure sensor, a pneumatic electromagnetic on-off valve and an air consumption assembly. A single energy device is provided with two servo motor pumps, fault isolation is achieved through an electromagnetic isolation valve, and dual-redundancy folding and unfolding control is formed. And a set of emergency pneumatic system is arranged to form heterogeneous redundancy, so that the high-reliability work of the undercarriage and the airplane wheel brake is realized.

Description

Technical Field

[0001] The invention belongs to the technical field of airborne equipment, and in particular relates to an energy device integrating a dual-channel motor pump and emergency pneumatics. Background Art

[0002] The retraction and extension of aircraft landing gear is related to flight safety, and requires high reliability and redundancy. The landing gear retraction and extension system usually uses a hydraulic system with centralized power supply, relying on the hydraulic valve switching to control the retraction and extension of the landing gear. The centralized power supply hydraulic system itself has complex pipelines, is difficult to maintain, and has a large size and weight.

[0003] Chinese patent CN215043641U, filed on May 10, 2021, discloses a hydraulic retraction and extension system for landing gear at any position. It uses centralized energy, has low working efficiency, no emergency pneumatic lowering function, and does not have redundancy capability; Chinese patent CN113665797A, filed on August 30, 2021, discloses an electric and pneumatic heterogeneous redundant UAV landing gear retraction and extension actuator and working method. Although it has electric and pneumatic heterogeneous redundant functions, the pneumatic working method uses a pneumatic motor to drive and a ball screw pair to execute the action, and the electric The component actuators are consistent, so the jamming failure of the ball screw pair cannot be avoided, and the actuator uses a ball screw, which has weak impact resistance and is mostly used for retraction and extension of small UAV landing gear. It is not suitable for retraction and extension of medium and large landing gear; Chinese patent CN118220474A, with an application date of March 29, 2024, discloses a distributed dual-redundant aircraft landing gear retraction and extension energy device, which uses a dual-channel motor pump energy, has no emergency pneumatic redundancy, and has no output control valve. It can only be used to control the retraction and extension of a single landing gear actuator, and cannot be used for upper and lower locks and door retraction and extension. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and propose an energy device integrating a dual-channel motor pump and emergency pneumatics to solve the shortcomings of the existing centralized hydraulic system of aircraft landing gear, such as complex piping, high energy consumption, difficult maintenance and low redundancy.

[0005] The present invention provides a dual-channel motor pump and emergency pneumatic heterogeneous redundant energy device, which is arranged next to the aircraft landing gear to shorten the pipeline. After receiving the command sent by the flight control, the retraction and extension controller opens each solenoid valve in a timed sequence, drives the retraction and extension energy device to provide hydraulic energy to the hydraulic actuator, completes the retraction and extension of the aircraft landing gear, and provides high-pressure energy for the wheel brake system. The retraction and extension energy device is equipped with two sets of servo motor pumps and emergency pneumatic systems, and realizes fault isolation through electromagnetic isolation valves, and realizes oil and pneumatic isolation through emergency valves, forming heterogeneous redundant retraction and extension control, and realizing high-reliability operation of the landing gear and wheel brakes.

[0006] The present invention provides a dual-channel motor pump and emergency pneumatic heterogeneous redundant energy device, including a motor pump, a normally open electromagnetic isolation valve, a normally closed electromagnetic isolation valve, an electromagnetic on-off valve, a pressurized oil tank, a hydraulically controlled one-way valve, a low-pressure pressure sensor, a high-pressure pressure sensor, a radiator, a one-way valve, a filter, a high-pressure safety valve, a one-way constant speed valve, an emergency gas cylinder, an emergency valve, an inflatable component, a pneumatic pressure sensor, a pneumatic electromagnetic on-off valve, an air consumption component, a flight control computer, a controller, a brake system, an upper lock, a lower lock, a door retracting and extending actuator cylinder, and a landing gear retracting and extending actuator cylinder. Among them, the brake system, the landing gear retracting and extending actuator cylinder, the door retracting and extending actuator cylinder, the upper lock, and the lower lock are the device output oil (emergency pneumatic) execution part, and the controller receives the instructions sent by the flight control computer to control the action of the device.

[0007] After receiving the command sent by the flight control computer, the controller opens the corresponding solenoid valve, drives the motor pump to rotate, and pumps out high-pressure oil to drive the landing gear retraction and extension system or the wheel brake system. When executing the landing gear retraction and extension and door opening and closing functions, it is in pump control mode, that is, the speed of the landing gear retraction and extension is controlled by controlling the speed of the motor pump. The system power is proportional to the actual required power and the heat generation is small; when executing the wheel brake function, it is in valve control mode. At this time, the motor pump rotates in one direction, the system pressure is controlled by the safety valve, and the landing gear energy system achieves constant pressure output. In order to reduce heat generation, the timing control method is adopted, that is, the speed of the motor pump is controlled according to logic and timing, and the dissipated energy and heat generation are reduced while meeting the system flow requirements. A hydraulically controlled one-way valve is used in the oil circuit to discharge excess oil from the rodless chamber of the actuator to the oil tank. A one-way constant speed valve is set to ensure that the door or landing gear actuator is safely and smoothly lowered. A normally closed electromagnetic isolation valve and an electromagnetic on-off valve are set in each passage. When the entire energy device is not working, the two chambers of each actuator are connected and connected to the booster tank to ensure that each chamber is in a low-pressure state to prevent accidents caused by oil pressure increase due to heat. Multiple pressure sensors are set in the energy device to monitor the status of the energy device.

[0008] When the system triggers the emergency function, the controller opens each pneumatic solenoid on-off valve in sequence to realize the pneumatic emergency lowering of the landing gear. The gas cylinder stores high-pressure gas, and the gas source is locked through the main pneumatic solenoid on-off valve. The gas leaked from the pneumatic solenoid on-off valve can leak into the atmosphere through the gas-consuming components to prevent the system from being pressurized. When the emergency gas circuit is started, the controller opens the main and branch solenoid valves in sequence. The rated air pressure pushes the emergency valve to allow high-pressure gas to flow to each actuator. When the emergency pneumatic part is working, the solenoid valves of the hydraulic part are in a non-powered state and the spring position is maintained.

[0009] The beneficial effects of the present invention are as follows:

[0010] (1) Dual-channel motor pump and emergency pneumatic heterogeneous redundancy: a single energy device is equipped with two sets of servo motor pumps, and fault isolation is achieved through electromagnetic isolation valves to form dual-redundancy retraction and extension control; and an emergency pneumatic system is set up to form heterogeneous redundancy to achieve high-reliability operation of the landing gear and wheel brakes.

[0011] (2) Multiple electromagnetic isolation valves are provided. The energy device involved in the present invention has multiple output channels, which can be connected to multiple actuators or other devices on the machine, and realize sequential logic actions by controlling the electromagnetic isolation valves.

[0012] (3) A cooler is installed on the oil return line. All the oil overflowing from the safety valve and the oil passing through the electromagnetic on-off valve are returned to the oil tank through the cooler, which plays a role in cooling the oil and ensures long-term working capacity.

[0013] (4) The overall structural design of the present invention is highly integrated, and the outer envelope is minimized. All interfaces are perpendicular to the operation plane, including the electrical connector interface, hydraulic interface, fuel tank air supply interface, and high-pressure gas cylinder air supply interface, which facilitates mechanical and electrical connection operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention:

[0015] Figure 1 This is a hydraulic and pneumatic principle diagram of an embodiment of the present invention;

[0016] Figure 2 It is a structural diagram of an embodiment of the present invention.

[0017] Among them: 1-motor pump; 2-electromagnetic isolation valve (normally open); 3-electromagnetic isolation valve (normally closed); 4-electromagnetic on-off valve; 5-boosting oil tank; 6-hydraulic one-way valve; 7-low pressure sensor; 8-high pressure sensor; 9-radiator; 10-one-way valve; 11-filter; 12-high pressure safety valve; 13-one-way constant speed valve; 14-emergency gas cylinder; 15 emergency valve; 16 charging assembly; 17 pneumatic pressure sensor; 18 pneumatic electromagnetic on-off valve; 19 gas consumption assembly DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0019] The present invention proposes an energy device integrating a dual-channel motor pump and emergency pneumatics. The hydraulic and pneumatic principle diagram is as follows: Figure 1 As shown, it includes a motor pump 1 (1.1, 1.2), a normally open electromagnetic isolation valve 2 (2.1, 2.2), a normally closed electromagnetic isolation valve 3 (3.1, 3.2, 3.3), an electromagnetic on-off valve 4 (4.1, 4.2, 4.3), a booster tank 5, a hydraulically controlled one-way valve 6 (6.1, 6.2), a low-pressure pressure sensor 7, a high-pressure pressure sensor 8 (8.1, 8.2), a radiator 9, and a one-way valve 10 (10 .1, 10.2), filter 11, high-pressure safety valve 12 (12.1, 12.2), one-way constant speed valve 13 (13.1, 13.2), emergency gas cylinder 14, emergency valve 15 (15.1, 15.2), charging component (16), pneumatic pressure sensor 17 (17.1, 17.2), pneumatic electromagnetic on-off valve 18 (18.1, 18.2, 18.3), gas consumption component 19. Figure 1 The central brake system, landing gear retraction and extension actuator, door retraction and extension actuator, upper lock and lower lock are the device output oil (emergency pneumatic) execution parts. The controller receives instructions sent by the flight control computer to control the action of the device.

[0020] After receiving the command sent by the flight control computer, the controller opens the corresponding solenoid valve, drives the motor pump to rotate, and pumps out high-pressure oil to drive the landing gear retraction and extension system or the wheel brake system. When executing the landing gear retraction and extension and door opening and closing functions, it is in pump control mode, that is, the speed of the landing gear retraction and extension is controlled by controlling the speed of the motor pump. The system power is proportional to the actual required power and the heat generation is small; when executing the wheel brake function, it is in valve control mode. At this time, the motor pump rotates in one direction, the system pressure is controlled by the safety valve, and the landing gear energy system achieves constant pressure output. In order to reduce heat generation, the timing control method is adopted, that is, the speed of the motor pump is controlled according to logic and timing, and the dissipated energy and heat generation are reduced while meeting the system flow requirements. A hydraulically controlled one-way valve is used in the oil circuit to discharge excess oil from the rodless chamber of the actuator to the oil tank. A one-way constant speed valve is set to ensure that the door or landing gear actuator is safely and smoothly lowered. A normally closed electromagnetic isolation valve and an electromagnetic on-off valve are set in each passage. When the entire energy device is not working, the two chambers of each actuator are connected and connected to the booster tank to ensure that each chamber is in a low-pressure state to prevent accidents caused by oil pressure increase due to heat. Multiple pressure sensors are set in the energy device to monitor the status of the energy device.

[0021] When the system triggers the emergency function, the controller opens each pneumatic solenoid on-off valve in sequence to realize the pneumatic emergency lowering of the landing gear. The gas cylinder stores high-pressure gas, and the gas source is locked through the main pneumatic solenoid on-off valve. The gas leaked from the pneumatic solenoid on-off valve can leak into the atmosphere through the gas-consuming components to prevent the system from being pressurized. When the emergency gas circuit is started, the controller opens the main and branch solenoid valves in sequence. The rated air pressure pushes the emergency valve to allow high-pressure gas to flow to each actuator. When the emergency pneumatic part is working, the solenoid valves of the hydraulic part are in a non-powered state and the spring position is maintained.

[0022] The specific working process is:

[0023] (1) Execute the landing gear lowering command:

[0024] The flight control computer sends a lowering command to the controller. At this time, the normally closed electromagnetic isolation valve 3.2 and the electromagnetic on-off valve 4.2 are energized, and the door retraction and extension actuator and the energy device oil circuit are connected. The motor pumps 1.1 and 1.2 rotate in the opposite direction at a constant speed (e.g. -5000rpm) driven by the retraction and extension controller. The pumped pressure oil passes through the normally open electromagnetic isolation valves 2.1 and 2.2, then converges and passes through the normally closed electromagnetic isolation valve 3.2 and the emergency valve 15.2, and then enters the upper chamber of the hatch door retraction and extension cylinder through the C interface, pushing the piston rod to move downward to open the hatch door. The oil in the lower chamber of the hatch door retraction and extension cylinder flows back to the oil suction chamber of the motor pumps 1.1 and 1.2 through the one-way constant speed valve 13.1. The one-way constant speed valve 13.1 can control the oil flow rate, thereby preventing the hatch door from opening too quickly; at the same time, the oil in the booster tank 5 enters the upper oil circuit through the hydraulically controlled one-way valve 6.1, and enters the oil suction chamber of the motor pumps 1.1 and 1.2 through the normally open electromagnetic isolation valves 2.1 and 2.2, realizing the circulation of the oil and ensuring that the system low pressure has an appropriate pressure value to prevent cavitation and air from infiltrating the system. When the piston rod of the door retracting and extending actuator moves to the full position, the pressure in the lower chamber continues to increase until it reaches the set pressure of the safety valve 12.2. The pressure sensor 8.2 feeds back the measured pressure to the controller. After reaching the set pressure, the motor pump continues to work for 0.5s to ensure that the door is fully opened. Then the motor pumps 1.1 and 1.2 stop, and the normally closed electromagnetic isolation valve 3.2 and the electromagnetic on-off valve 4.2 lose power.

[0025] After the hatch is fully opened, the normally closed electromagnetic isolation valve 3.1 and the electromagnetic on-off valve 4.1 are energized, and the motor pumps 1.1 and 1.2 rotate forward at a constant speed (e.g. 5000rpm) driven by the retraction and extension controller. The pumped pressure oil enters the upper chamber of the upper lock through the normally closed electromagnetic isolation valve 3.1, opens the upper lock, and enters the lower chamber of the landing gear retraction and extension cylinder through the J port and the emergency valve 15.1, and lowers the landing gear. The oil in the upper chamber of the landing gear retraction and extension cylinder flows back to the oil suction chamber of the motor pumps 1.1 and 1.2 through the one-way constant speed valve 13.2. The one-way constant speed valve 13.2 can control the oil flow rate, thereby preventing the landing gear from being lowered too quickly. The upper chamber area of ​​the landing gear retraction and extension cylinder is larger than the lower chamber. Therefore, compared with the oil suction flow of the motor pumps 1.1 and 1.2, the flow of the landing gear retraction and extension cylinder to the energy device is larger, and this part of the oil flows back to the oil tank through the hydraulic one-way valve 6.2. After the landing gear is lowered into place, the pressure in the lower chamber continues to increase until it reaches the set pressure of the safety valve 12.1. The pressure sensor 8.1 feeds back the measured pressure to the controller. After reaching the set pressure, the motor pump continues to work for 0.5s to ensure that the landing gear is lowered into place. The normally closed electromagnetic isolation valve 3.1 and the electromagnetic on-off valve 4.1 lose power.

[0026] The motor pumps 1.1 and 1.2 keep rotating forward at a constant speed (e.g. 5000rpm). At this time, the normally closed electromagnetic isolation valve 3.2 and the electromagnetic on-off valve 4.2 are energized, and the door retracting and extending actuator cylinder and the energy device oil circuit are in communication. The pumped pressure oil passes through the normally closed electromagnetic isolation valve 3.2 and the emergency valve 15.2 and then enters the lower chamber of the door retracting and extending actuator cylinder through the D interface, pushing the piston rod to move upward and closing the door. When the piston rod of the door retracting and extending actuator cylinder moves to the right position, the pressure in the lower chamber continues to increase until it reaches the set pressure of the safety valve 12.1. The pressure sensor 8.1 feeds the measured pressure back to the controller. After reaching the set pressure, the motor pump continues to work for 0.5s to ensure that the door is closed in place. Then the motor pumps 1.1 and 1.2 stop, and the normally closed electromagnetic isolation valve 3.2 and the electromagnetic on-off valve 4.2 lose power. The landing gear lowering command is executed.

[0027] (2) Execute the command to retract the landing gear:

[0028] The flight control computer sends a retraction command to the controller. At this time, the normally closed electromagnetic isolation valve 3.2 and the electromagnetic on-off valve 4.2 are energized, and the door retraction actuator and the energy device oil circuit are connected. The motor pumps 1.1 and 1.2 rotate in the opposite direction at a constant speed (e.g. -5000rpm) driven by the retraction and extension controller. The pumped pressure oil passes through the normally open electromagnetic isolation valves 2.1 and 2.2, then converges and passes through the normally closed electromagnetic isolation valve 3.2 and the emergency valve 15.2, and then enters the upper chamber of the hatch door retraction and extension cylinder through the C interface, pushing the piston rod to move downward to open the hatch door. The oil in the lower chamber of the hatch door retraction and extension cylinder flows back to the oil suction chamber of the motor pumps 1.1 and 1.2 through the one-way constant speed valve 13.1. The one-way constant speed valve 13.1 can control the oil flow rate, thereby preventing the hatch door from opening too quickly; at the same time, the oil in the booster tank 5 enters the upper oil circuit through the hydraulically controlled one-way valve 6.1, and enters the oil suction chamber of the motor pumps 1.1 and 1.2 through the normally open electromagnetic isolation valves 2.1 and 2.2, realizing the circulation of the oil and ensuring that the system low pressure has an appropriate pressure value to prevent cavitation and air from infiltrating the system. When the piston rod of the door retracting and extending actuator moves to the full position, the pressure in the lower chamber continues to increase until it reaches the set pressure of the safety valve 12.2. The pressure sensor 8.2 feeds back the measured pressure to the controller. After reaching the set pressure, the motor pump continues to work for 0.5s to ensure that the door is fully opened. Then the motor pumps 1.1 and 1.2 stop, and the normally closed electromagnetic isolation valve 3.2 and the electromagnetic on-off valve 4.2 lose power.

[0029] After the hatch is fully opened, the normally closed electromagnetic isolation valve 3.3 and the electromagnetic on-off valve 4.3 are energized, and the motor pumps 1.1 and 1.2 rotate in the negative direction at a constant speed (for example, -5000rpm) driven by the retraction and extension controller. The pumped pressure oil enters the lower chamber of the lower lock actuator through the normally closed electromagnetic isolation valve 3.3 to open the lower lock. After the lower lock is fully opened, the pressure in the lower chamber continues to increase until it reaches the set pressure of the safety valve 12.2. The pressure sensor 8.2 feeds the measured pressure back to the controller. After reaching the set pressure, the motor pump continues to work for 0.5 s, ensure that the lower lock is fully opened, the normally closed electromagnetic isolation valve 3.1 and the electromagnetic on-off valve 4.1 are energized, the motor pumps 1.1 and 1.2 maintain a constant speed and rotate in the opposite direction (for example -5000rpm), the pumped pressure oil passes through the normally closed electromagnetic isolation valve 3.1, and enters the upper chamber of the landing gear retraction and extension cylinder through the G port, retracting the landing gear, and the oil in the upper chamber of the landing gear retraction and extension cylinder flows back to the motor pump 1.1 and 1.2 oil suction chamber through the one-way constant speed valve 13.1. The one-way constant speed valve 13.1 can control the oil flow rate, thereby preventing the landing gear from being retracted too quickly. The upper chamber area of ​​the landing gear retraction and extension cylinder is larger than the lower chamber. Because the oil suction flow of the motor pumps 1.1 and 1.2 is larger than that of the landing gear retraction and extension cylinder to the energy device, the oil in the oil tank is sucked into the oil suction chamber through the hydraulic control one-way valve 6.1. After the landing gear is retracted, the pressure in the lower chamber continues to increase until it reaches the set pressure of the safety valve 12.2. The pressure sensor 8.2 feeds back the measured pressure to the controller. After reaching the set pressure, the motor pump continues to work for 0.5s to ensure that the landing gear is retracted. The normally closed electromagnetic isolation valves 3.1 and 3.3 and the electromagnetic on-off valves 4.1 and 4.3 lose power.

[0030] The motor pumps 1.1 and 1.2 rotate forward at a constant speed (e.g. 5000rpm). At this time, the normally closed electromagnetic isolation valve 3.2 and the electromagnetic on-off valve 4.2 are energized, and the door retracting and extending actuator cylinder and the energy device oil circuit are connected. The pumped pressure oil passes through the normally closed electromagnetic isolation valve 3.2 and the emergency valve 15.2 and then enters the lower chamber of the door retracting and extending actuator cylinder through the D interface, pushing the piston rod to move upward and closing the door. When the piston rod of the door retracting and extending actuator cylinder moves to the right position, the pressure in the lower chamber continues to increase until it reaches the set pressure of the safety valve 12.1. The pressure sensor 8.1 feeds the measured pressure back to the controller. After reaching the set pressure, the motor pump continues to work for 0.5s to ensure that the door is closed in place. Then the motor pumps 1.1 and 1.2 stop, and the normally closed electromagnetic isolation valve 3.2 and the electromagnetic on-off valve 4.2 lose power. The command to retract the landing gear is executed.

[0031] (3) Execute wheel brake command:

[0032] The energy device can provide constant pressure oil for the wheel brake system. The flight control computer sends a wheel brake command to the controller, and the motor pumps 1.1 and 1.2 rotate at a constant speed (e.g. 5000rpm) driven by the retraction and extension controller. The pumped pressure oil passes through the one-way valve 10.1 and the filter 11 and then flows to the brake system through the A interface. The return oil flows back to the boost tank 5 through the B interface and the cooler 9. The brake pressure is controlled by the high-pressure safety valve 12.1, and the flow is controlled by the speed of the motor pumps 1.1 and 1.2.

[0033] (4) Execute the emergency landing gear extension command:

[0034] The controller receives the emergency landing gear lowering command; the pneumatic solenoid valves 18.1 and 18.3 are energized; the high-pressure gas pushes the valve core of the emergency valve 15.2 open after passing through the pneumatic solenoid valves 18.1 and 18.3, closes the hydraulic interface, and flows to the upper chamber of the door retracting and extending cylinder through the C interface to open the door. After a predetermined time (e.g. 10s), the pneumatic solenoid valve 18.2 is energized, and the high-pressure gas will enter the upper lock through the N interface. After opening the upper lock, it pushes the valve core of the emergency valve 15.1 open through the P port, closes the hydraulic interface, and enters the lower chamber of the landing gear retracting and extending cylinder through the K port to lower the landing gear. Then the pneumatic solenoid valves 18.1, 18.2, and 18.3 lose power, completing the emergency landing gear lowering command.

[0035] (5) Execute the emergency brake command:

[0036] The controller receives the emergency brake command; the pneumatic solenoid valves 18.1, 18.2, and 18.3 are energized; the high-pressure gas passes through the pneumatic solenoid valve 18.1 and enters the brake system through the Q port, providing a high-pressure gas source for the emergency brake.

[0037] like Figure 2 As shown, each component of the retractable energy device is inserted into the shell structure, the installation interface is arranged at the bottom of the shell structure, and other electrical, air supply interfaces, and hydraulic interfaces are arranged perpendicular to the operating plane to facilitate mechanical and electrical connection operations.

[0038] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An energy device integrating a dual-channel motor pump and emergency pneumatics, characterized in that: include: Motor pump, normally open electromagnetic isolation valve, normally closed electromagnetic isolation valve, electromagnetic on-off valve, booster tank, hydraulically controlled one-way valve, low-pressure pressure sensor, high-pressure pressure sensor, radiator, one-way valve, filter, high-pressure safety valve, one-way constant speed valve, emergency gas cylinder, emergency valve, charging assembly, pneumatic pressure sensor, pneumatic electromagnetic on-off valve, gas consumption assembly; the device is equipped with two sets of motor pumps and achieves fault isolation through normally open electromagnetic isolation valve and normally closed electromagnetic isolation valve.

2. The energy device integrating a dual-channel motor pump and emergency pneumatics according to claim 1, characterized in that: It has multiple output channels and can realize sequential logic actions by controlling the electromagnetic isolation valve.

3. The energy device integrating a dual-channel motor pump and emergency pneumatics according to claim 1, characterized in that: A cooler is installed on the oil return line, and all the oil overflowing from the safety valve and the oil passing through the electromagnetic on-off valve will return to the oil tank through the cooler.

4. The energy device integrating a dual-channel motor pump and emergency pneumatics according to claim 1, characterized in that: All components are inserted into the shell structure, the installation interface is arranged at the bottom of the shell structure, and the electrical connector interface, hydraulic interface, oil tank air supply interface, and high-pressure gas cylinder air supply interface are all arranged perpendicular to the operating plane.

5. An energy device integrating a dual-channel motor pump and emergency pneumatics according to any one of claims 1 to 4, characterized in that: The commands sent by the flight control computer include: landing gear lowering command, landing gear retraction command, wheel brake command, emergency landing gear lowering command, and emergency brake command.

6. The energy device integrating dual-channel motor pump and emergency pneumatic according to claim 4, characterized in that: When the command to lower the landing gear is executed, the normally closed electromagnetic isolation valve and the electromagnetic on-off valve are energized, and the oil circuits of the door retraction and extension actuator and the energy device are connected; the two motor pumps rotate in opposite directions at a constant speed driven by the controller, and the pressure oil pumped out converges after passing through the normally open electromagnetic isolation valve and enters the upper chamber of the door retraction and extension actuator through the normally closed electromagnetic isolation valve and the emergency valve, pushing the piston rod to move downward to open the door, and the oil in the lower chamber of the door retraction and extension actuator flows back to the motor pump suction chamber through the one-way constant speed valve; at the same time, the oil in the booster tank enters the upper oil circuit through the hydraulically controlled one-way valve, and enters the motor pump suction chamber through the normally open electromagnetic isolation valve to realize the circulation of the oil; when the piston rod of the door retraction and extension actuator moves into place, the pressure in the lower chamber continues to increase, and the motor pump continues to work to ensure that the door is fully opened, and then the motor pump stops, and the normally closed electromagnetic isolation valve and the electromagnetic on-off valve lose power; After the hatch is fully opened, the normally closed electromagnetic isolation valve and the electromagnetic on-off valve are energized. The motor pump rotates forward at a constant speed under the drive of the retraction and extension controller. The pumped pressure oil enters the upper chamber of the upper lock through the normally closed electromagnetic isolation valve, opens the upper lock, and enters the lower chamber of the landing gear retraction and extension actuator cylinder after passing through the emergency valve to lower the landing gear. The oil in the upper chamber of the landing gear retraction and extension actuator cylinder flows back to the motor pump oil suction chamber through the one-way constant speed valve. The one-way constant speed valve can control the oil flow rate, thereby preventing the landing gear from being lowered too quickly. After the landing gear is lowered into place, the pressure in the lower chamber continues to increase until it reaches the set pressure of the safety valve. The pressure sensor feeds the measured pressure back to the controller. After reaching the set pressure, the motor pump continues to work to ensure that the landing gear is lowered into place, and the normally closed electromagnetic isolation valve and the electromagnetic on-off valve lose power. The motor pump keeps rotating forward at a constant speed. At this time, the normally closed electromagnetic isolation valve and the electromagnetic on-off valve are energized, and the oil circuits of the door retraction and extension actuator and the energy device are connected; the pumped pressure oil passes through the normally closed electromagnetic isolation valve and the emergency valve and then enters the lower chamber of the door retraction and extension actuator through the D interface, pushing the piston rod to move upward to close the door. When the piston rod of the door retraction and extension actuator moves into place, the pressure in the lower chamber continues to increase until it reaches the set pressure of the safety valve. The pressure sensor feeds the measured pressure back to the controller. After reaching the set pressure, the motor pump continues to work to ensure that the door is closed in place. Then the motor pump stops, and the normally closed electromagnetic isolation valve and the electromagnetic on-off valve lose power.

7. The energy device integrating a dual-channel motor pump and emergency pneumatics according to claim 4, characterized in that: When executing the command to retract the landing gear, the normally closed electromagnetic isolation valve and the electromagnetic on-off valve are energized, and the oil circuits of the door retraction and extension actuator and the energy device are connected; the two motor pumps rotate in opposite directions at a constant speed under the drive of the retraction and extension controller, and the pressure oil pumped out passes through the normally open electromagnetic isolation valve and then converges and passes through the normally closed electromagnetic isolation valve and the emergency valve and then enters the upper chamber of the door retraction and extension actuator through the C interface, pushing the piston rod to move downward to open the door, and the oil in the lower chamber of the door retraction and extension actuator flows back to the motor pump oil suction chamber through the one-way constant speed valve. The one-way constant speed valve can control the oil flow rate, thereby preventing the door from opening too quickly; At the same time, the oil in the booster tank enters the upper oil circuit through the hydraulically controlled one-way valve, and enters the oil suction chamber of the motor pump through the normally open electromagnetic isolation valve, realizing the circulation of the oil and ensuring that the system low pressure has an appropriate pressure value to prevent cavitation and air from infiltrating the system; when the piston rod of the door retraction and extension cylinder moves into place, the pressure in the lower chamber continues to increase until it reaches the set pressure of the safety valve, and the pressure sensor feeds the measured pressure back to the controller. After reaching the set pressure, the motor pump continues to work to ensure that the door is fully opened, and then the motor pump stops, and the normally closed electromagnetic isolation valve and the electromagnetic on-off valve lose power; After the door is fully opened, the normally closed electromagnetic isolation valve and the electromagnetic on-off valve are energized, and the motor pump rotates in the negative direction at a constant speed under the drive of the retraction and extension controller. The pumped pressure oil enters the lower chamber of the lower lock actuator cylinder through the normally closed electromagnetic isolation valve to open the lower lock. After the lower lock is fully opened, the pressure in the lower chamber continues to increase until it reaches the set pressure of the safety valve. The pressure sensor feeds the measured pressure back to the controller. After reaching the set pressure, the motor pump continues to work to ensure that the lower lock is fully opened. The normally closed electromagnetic isolation valve and the electromagnetic on-off valve are energized, and the motor pump keeps rotating in the opposite direction at a constant speed. The pumped pressure oil passes through the normally closed electromagnetic isolation valve and enters the upper chamber of the landing gear retraction and extension actuator cylinder through the G port. When the landing gear is retracted, the oil in the upper chamber of the landing gear retraction and extension actuator cylinder flows back to the motor pump oil suction chamber through the one-way constant speed valve. The one-way constant speed valve can control the oil flow rate, thereby preventing the landing gear from being retracted too quickly; the upper chamber area of ​​the landing gear retraction and extension actuator cylinder is larger than the lower chamber. Because the motor pump oil suction flow rate is larger than that of the landing gear retraction and extension actuator cylinder to the energy device, the oil in the tank is sucked into the oil suction chamber through the hydraulically controlled one-way valve; after the landing gear is retracted into place, the pressure in the lower chamber continues to increase until it reaches the set pressure of the safety valve. The pressure sensor feeds the measured pressure back to the controller. After reaching the set pressure, the motor pump continues to work to ensure that the landing gear is retracted into place, and the normally closed electromagnetic isolation valve and the electromagnetic on-off valve lose power; The motor pump turns to constant speed forward rotation. At this time, the normally closed electromagnetic isolation valve and the electromagnetic on-off valve are energized, and the door retraction and extension actuator and the energy device oil circuit are connected; the pumped pressure oil passes through the normally closed electromagnetic isolation valve and the emergency valve and then enters the lower chamber of the door retraction and extension actuator through the D interface, pushing the piston rod to move upward to close the door. When the piston rod of the door retraction and extension actuator moves into place, the pressure in the lower chamber continues to increase until it reaches the set pressure of the safety valve. The pressure sensor feeds the measured pressure back to the controller. After reaching the set pressure, the motor pump continues to work to ensure that the door is closed in place. Then the motor pump stops, and the normally closed electromagnetic isolation valve and the electromagnetic on-off valve lose power; the command to retract the landing gear is executed.

8. The energy device integrating a dual-channel motor pump and emergency pneumatics according to claim 4, characterized in that: When the wheel brake command is executed, the motor pump rotates at a constant speed driven by the retraction and extension controller. The pressurized oil pumped out flows to the brake system through the one-way valve and filter, and the return oil flows back to the boost tank through the cooler. The brake pressure is controlled by the high-pressure safety valve, and the flow is controlled by the motor pump speed.

9. An energy device integrating a dual-channel motor pump and emergency pneumatics according to claim 4, characterized in that: When the emergency landing gear lowering command is executed, the pneumatic solenoid on-off valve is energized; the high-pressure gas pushes open the emergency valve core after passing through the pneumatic solenoid on-off valve, closes the hydraulic interface, flows to the upper chamber of the door retraction and extension actuator cylinder, and opens the door; after a predetermined time, the pneumatic solenoid valve is energized, and the high-pressure gas will enter the upper lock, open the upper lock, push open the emergency valve core after opening the upper lock, close the hydraulic interface, enter the lower chamber of the landing gear retraction and extension actuator cylinder through the K port, and lower the landing gear, then the pneumatic solenoid valve loses power, completing the emergency landing gear lowering command.

10. An energy device integrating a dual-channel motor pump and emergency pneumatics according to claim 4, characterized in that: When the emergency brake command is executed, the pneumatic solenoid valves are energized; the high-pressure gas passes through the pneumatic solenoid valves and enters the brake system through the Q port, providing a high-pressure gas source for the emergency brake.

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