CN212797292U - Double-channel multifunctional integrated brake module - Google Patents
Double-channel multifunctional integrated brake module Download PDFInfo
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- CN212797292U CN212797292U CN202020621829.4U CN202020621829U CN212797292U CN 212797292 U CN212797292 U CN 212797292U CN 202020621829 U CN202020621829 U CN 202020621829U CN 212797292 U CN212797292 U CN 212797292U
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Abstract
The invention belongs to the technical field of aircraft antiskid brake systems, and discloses a dual-channel multifunctional integrated brake module, which comprises: the hydraulic control system comprises a shell, a first pressure servo valve and a second pressure servo valve which are arranged on the upper surface of the shell, a first hydraulic fuse and a second hydraulic fuse which are arranged on the left side and the right side of the shell, and a first pressure sensor and a second pressure sensor which are arranged on the upper surface of the shell, wherein the first pressure sensor is positioned behind the first servo valve, and the second pressure sensor is positioned behind the second servo valve; the first pressure sensor is provided with a first brake nozzle through a first oil filter component, and the second pressure sensor is provided with a second brake nozzle through a second oil filter component; the first pressure servo valve, the second pressure servo valve, the first hydraulic fuse and the second hydraulic fuse are communicated with the electromagnetic valve and the hydraulic control one-way valve which are arranged inside the shell through corresponding pipelines respectively, and the defects of large weight and low reliability of a discrete braking system are overcome.
Description
Technical Field
The invention belongs to the technical field of aircraft antiskid brake systems, and particularly relates to a dual-channel multifunctional integrated brake module.
Background
The brake system is used as an important functional subsystem of the airplane, and the reliability of the brake system has important influence on the take-off and landing safety of the airplane. According to boeing's statistics, the catastrophic accidents that occurred while the aircraft was maneuvering on the ground accounted for 41% of the total accidents during the decade from 2005 to 2014. Wherein most accidents are related to brake system faults, and the brake system fault modes comprise: jamming caused by leakage and pollution, and poor performance of the servo valve.
The traditional hydraulic brake has many system faults due to many hydraulic control accessories, pipelines and joints, and is easy to leak so as to cause fire. According to statistics, the aircraft anti-skid brake system with the domestic discrete hydraulic components has the defects of poor anti-pollution capability of a pressure servo valve of a core execution component due to the fact that the number of components is large, the product size is large, the weight is heavy, the pipeline is long, the number of leakage points is large, the MTBF of the system is only 300 hours, and the requirements on safety and reliability of the civil aircraft anti-skid brake system are far not met.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a dual-channel multifunctional integrated brake module, which solves the defects of heavy weight and low reliability of a discrete brake system.
In order to achieve the purpose, the invention provides the following technical scheme:
a multi-functional integrated brake module of binary channels, the brake module includes: the hydraulic control system comprises a shell, a first pressure servo valve and a second pressure servo valve which are arranged on the upper surface of the shell, a first hydraulic fuse and a second hydraulic fuse which are arranged on the left side and the right side of the shell, and a first pressure sensor and a second pressure sensor which are arranged on the upper surface of the shell, wherein the first pressure sensor is positioned behind the first pressure servo valve, and the second pressure sensor is positioned behind the second pressure servo valve;
the first pressure sensor is provided with a first brake nozzle through a first oil filter component, and the second pressure sensor is provided with a second brake nozzle through a second oil filter component;
the first pressure servo valve, the second pressure servo valve, the first hydraulic fuse and the second hydraulic fuse are respectively communicated with the electromagnetic valve and the hydraulic control one-way valve which are arranged in the shell through corresponding pipelines.
The technical scheme of the invention has the characteristics and further improvements that:
(1) the first pressure sensor is arranged between the outlet of the first hydraulic fuse and the first oil filter assembly, and the second pressure sensor is arranged between the outlet of the second hydraulic fuse and the second oil filter assembly.
(2) The casing upper surface is provided with circular boss, the solenoid valve is installed inside the circular boss, just the solenoid valve is located between first pressure sensor and the second pressure sensor.
(3) The length, width and height of the overall dimension of the shell are 136mm, 146mm and 55mm in sequence, and the length, width and height of the overall dimension of the brake module are 210mm, 203.2mm and 131.4mm in sequence.
(4) The brake module further comprises a one-way valve, a first switching valve and a second switching valve which are arranged in the shell;
an oil inlet of the first pressure servo valve is connected with an oil return port of the hydraulic control one-way valve, a brake port of the first pressure servo valve is connected with an oil inlet at one end of the first conversion valve, and the oil return port of the first pressure servo valve is connected with an oil inlet of the one-way valve;
an oil inlet of the second pressure servo valve is connected with an oil return port of the hydraulic control one-way valve, a brake port of the second pressure servo valve is connected with an oil inlet at one end of the second conversion valve, and the oil return port of the second pressure servo valve is connected with the oil inlet of the one-way valve;
an oil inlet of the first hydraulic fuse is connected with an oil return port of the first conversion valve, and an oil outlet of the first hydraulic fuse is connected with the left brake module;
and an oil inlet of the second hydraulic fuse is connected with an oil return port of the second conversion valve, and an oil outlet of the second hydraulic fuse is connected with the right brake module.
(5) The first conversion valve and the second conversion valve respectively comprise two oil inlet ports and an oil return port;
an oil inlet at one end of the first conversion valve is connected with a brake port of the first pressure servo valve, an oil inlet at the other end of the first conversion valve is connected with an oil supply port of an emergency system, and an oil return port of the first conversion valve is connected with an oil inlet of a first hydraulic fuse;
an oil inlet at one end of the second change-over valve is connected with a brake port of the second pressure servo valve, an oil inlet at the other end of the second change-over valve is connected with an oil supply port of the emergency system, and an oil return port of the second change-over valve is connected with an oil inlet of the second hydraulic fuse.
(6) The oil inlet of the electromagnetic valve is connected with normal oil supply, the control port of the electromagnetic valve is connected with the control cavity of the hydraulic control one-way valve, and the oil return port of the electromagnetic valve is connected with the oil inlet of the one-way valve.
(7) An oil inlet of the hydraulic control one-way valve is connected with normal oil supply;
and an oil return port of the one-way valve is in oil return connection with the brake system.
(8) The oil inlet of the first pressure sensor is connected with the oil return port of the first hydraulic fuse, and the oil inlet of the second pressure sensor is connected with the oil return port of the second hydraulic fuse.
(9) The brake module still includes: a third oil filter assembly and a fourth oil filter assembly;
the third oil is strained the subassembly and is installed inside emergent fuel feeding mouthpiece, the fourth oil is strained the inside of subassembly installation at normal fuel feeding mouthpiece.
The two-channel multifunctional integrated brake module provided by the technical scheme of the invention has the most basic function of providing brake pressure for the brake module and comprises two independent brake pressure adjusting branches. Each branch comprises a pressure servo valve, a pressure sensor and a hydraulic fuse, and an electromagnetic lock and an oil filter are shared by two brake pressure adjusting units. The electromagnetic lock is used for controlling the on-off of the oil inlet oil way; the pressure servo valve outputs brake pressure in linear proportion according to the magnitude of the input current; the pressure servo valve is responsible for collecting brake pressure signals and feeding the pressure signals back to the control box to form a closed-loop control circuit and provide stable brake pressure; the hydraulic insurance is used for automatically closing an oil circuit when a system pipeline is damaged, so that the oil loss of the system is prevented, and the oil return circuit of the integrated brake module is provided with a one-way valve to prevent the influence of return oil pressure fluctuation on the brake pressure. Each branch can provide functions such as oil circuit break-make, pressure feedback, pressure monitoring, open circuit protection required by braking, and through the integrated design, the number of pipe joints is reduced, the weight of the whole system is reduced, the arrangement of airplane pipelines is facilitated, and the leakage is reduced because the electromagnetic lock of the core element is in a plug-in arrangement.
Drawings
FIG. 1 is a schematic structural diagram of a dual-channel multifunctional integrated brake module according to an embodiment of the present invention;
FIG. 2 is a schematic view of the connection of the internal pipeline of the shell of the dual-channel multifunctional integrated brake module according to the embodiment of the present invention;
FIG. 3 is a first schematic assembly diagram of a dual-channel multifunctional integrated brake module according to an embodiment of the present invention;
FIG. 4 is a second schematic assembly view of a dual-channel multifunctional integrated brake module according to an embodiment of the present invention;
FIG. 5 is a schematic diagram showing the first outline dimension of a dual-channel multifunctional integrated brake module according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of the overall dimension of a dual-channel multifunctional integrated brake module according to an embodiment of the present invention;
the hydraulic control system comprises a first pressure sensor 1, a first hydraulic fuse 2, a first pressure servo valve 3, a second pressure servo valve 4, a shell 5, a second switching valve 6, a second hydraulic fuse 7, a second pressure sensor 8, a second oil filter assembly 9, a one-way valve 10, an electromagnetic valve 11, a hydraulic control one-way valve 12, a fourth oil filter assembly 13, a first switching valve 14, a third oil filter assembly 15 and a first oil filter assembly 16.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The embodiment is a dual-channel multifunctional integrated brake module, and the integrated brake module mainly comprises a hydraulic fuse, a pressure servo valve, a shell, a change-over valve, a pressure sensor, an oil filter, a one-way valve, an electromagnetic valve and a hydraulic control one-way valve.
As shown in fig. 1, oil inlets (S1, S4) of the pressure servo valves (3,4) are connected with an oil return port of the pilot-controlled check valve (12), brake ports (S2, S5) are respectively connected with oil inlets at one ends of the conversion valves (14,6), and the oil return ports (S3, S6) are connected with the oil inlets of the check valve 10;
oil inlets of the hydraulic fuses (2 and 7) are respectively connected with oil return of the conversion valves (14 and 6), and oil outlets of the hydraulic fuses are respectively connected with the left brake module and the right brake module.
The switching valves (14,6) comprise two oil inlet ports, one oil return port, one end of the oil inlet is respectively connected with the pressure servo valve brake port (S2, S5), the other end of the oil inlet is connected with the emergency system oil supply port, and the oil return port is respectively connected with the oil inlet of the hydraulic fuse (2,7), so that the normal oil supply and emergency oil supply conversion of the system is realized.
An oil inlet of the electromagnetic lock (11) is connected with a normal oil supply, a control port is connected with a control cavity of the hydraulic check valve, and an oil return port is connected with an oil inlet of the check valve 10.
The control cavity of the hydraulic control one-way valve (12) is connected with the control port of the electromagnetic valve, the oil inlet is connected with the normal oil supply, and the oil return port is connected with the oil inlets (S1, S4) of the servo valves (3, 4).
An oil inlet of the one-way valve (10) is connected with an oil return port of the servo valve and the electromagnetic valve in an oil return mode, and the oil return port is connected with a brake system in an oil return mode.
Oil inlets of the pressure sensors (1,8) are respectively connected with oil return ports of the hydraulic fuses (2, 7).
Oil filter assemblies (16,15,13,9) are respectively arranged inside the B1 brake nozzle, the emergency oil supply nozzle, the normal oil supply nozzle and the B2 brake nozzle.
The pressure servo valve 3 and the pressure servo valve 4 are respectively fixed on the upper surface of the shell 5 through 4 screw connections.
As shown in fig. 2, among them, a1 casing passage, a2 switching valve oil inlet chamber, A3 casing passage, A4 pilot-controlled check valve control chamber, A5 casing passage, A6 pilot-controlled check valve oil outlet chamber, a7 casing passage, A8 pilot-controlled check valve oil outlet chamber, a9 solenoid valve oil inlet chamber, a10 casing passage, a11 casing passage, a12 casing passage, a13 switching valve oil inlet chamber, a14 switching valve oil outlet chamber, a15 switching valve oil inlet chamber, a16 casing passage, a17 casing passage, a18 check valve oil inlet chamber, a19 casing passage, a20 check valve oil inlet chamber, a21 solenoid valve oil return chamber, a22 casing passage, a23 solenoid valve control chamber, a24 casing passage, a25 casing passage, a26 casing passage, a27 oil inlet chamber.
Holes S1 (namely oil inlets) of the two servo valves are respectively connected with a left channel and a right channel of a shell A5, holes S2 (namely brake ports) of the two servo valves are respectively connected with channels A3 and A12 of the shell, holes S3 (namely oil outlets) of the two servo valves are respectively connected with a left channel and a right channel of a shell A10, and the installation positions are shown in FIG. 3;
the hydraulic fuse 2 and the hydraulic fuse 7 are respectively fixed on the left side and the right side of the shell through 4 screws;
the channel A1 of the oil inlet shell of the hydraulic fuse 2 is connected, the outlet of the hydraulic fuse 2 is connected with the oil filter assembly 16, and the specific installation position is shown in figure 4;
the channel A14 of the oil inlet shell of the hydraulic fuse 7 is connected, the outlet of the hydraulic fuse 7 is connected with the oil filter assembly 9, and the specific installation position is shown in figure 3;
the pressure sensor 1 and the pressure sensor 8 are respectively connected with the housing surface through threads and are positioned behind the servo valve 3 and the servo valve 4. The pressure sensor 1 is positioned between the outlet of the hydraulic fuse 2 and the oil filter assembly 16, and the pressure sensor 8 is also positioned between the outlet of the hydraulic fuse 7 and the oil filter assembly 9; the specific installation position is shown in figure 3;
an oil inlet channel A2 of the change-over valve 14 is communicated with a channel of a shell A3, an oil inlet channel A27 is communicated with a channel of a shell A26, and an outlet of the change-over valve is communicated with a shell A1;
an oil inlet channel A13 of the change-over valve 6 is communicated with a channel A12, an oil inlet channel A15 is communicated with a channel A26, and an outlet of the change-over valve is communicated with a channel A14;
a control cavity A4 of the hydraulic control one-way valve 12 is communicated with a shell channel A24, an oil inlet cavity A8 is communicated with a shell channel A22, and an oil outlet cavity A6 is communicated with a shell channel A5;
an oil inlet cavity A9 of the electromagnetic valve 11 is communicated with a shell oil inlet channel A25 and an oil inlet channel A22 of the hydraulic control one-way valve, an electromagnetic valve control cavity A23 is communicated with a shell channel A24, and an electromagnetic valve oil return cavity A21 is communicated with a shell channel A17; the electromagnetic valve is arranged in the circular boss on the surface of the shell by means of a nut and is positioned in the middle of the pressure sensor, and the specific installation position is shown in figure 4;
an oil inlet cavity A18 of the check valve 10 is connected with a channel A17 of the shell, and an oil outlet cavity A20 of the check valve is connected with a channel A19 of the shell;
As shown in fig. 5 and 6, the overall dimension of the structure and the housing designed according to the invention is 136 × 146 × 55mm, and the overall dimension of the integrated brake module is 210 × 203.2 × 131.4 mm.
The two-channel multifunctional integrated brake module provided by the embodiment of the invention has the most basic function of providing brake pressure for the brake module and comprises two independent brake pressure adjusting branches. Each branch comprises a pressure servo valve, a pressure sensor and a hydraulic fuse, and an electromagnetic lock and an oil filter are shared by two brake pressure adjusting units. The electromagnetic lock is used for controlling the on-off of the oil inlet oil way; the pressure servo valve outputs brake pressure in linear proportion according to the magnitude of the input current; the pressure servo valve is responsible for collecting brake pressure signals and feeding the pressure signals back to the control box to form a closed-loop control circuit and provide stable brake pressure; the hydraulic insurance is used for automatically closing an oil circuit when a system pipeline is damaged, so that the oil loss of the system is prevented, and the oil return circuit of the integrated brake module is provided with a one-way valve to prevent the influence of return oil pressure fluctuation on the brake pressure. Each branch circuit can provide functions of oil circuit on-off, pressure feedback, pressure monitoring, open circuit protection and the like required by braking.
Introduction to working conditions
(1) State of loose brake
When no instruction signal is input into the system, namely when the electromagnetic coil of the electromagnetic lock is not electrified, oil led to the control cavity of the hydraulic control one-way valve is cut off by the electromagnetic lock, the valve core of the hydraulic control one-way valve is closed under the action of oil supply pressure until the oil inlet led to the servo valve is cut off, and the servo valve does not work.
(2) Normal braking state
When the system inputs an instruction signal to the brake control valve, namely when the electromagnetic coil of the hydraulic lock is electrified, the electromagnetic lock is opened under the action of electromagnetic force, the oil supply pressure is led to the control cavity of the hydraulic control one-way valve, because the action area of the control cavity is larger than the action area of one end of the valve core, a pressure difference is formed, the pressure at one end of the piston is larger than the pressure at one end of the valve core, the piston of the hydraulic control one-way valve moves rightwards to jack the valve core until the oil inlet P is communicated with the oil inlet of the servo. When the servo valve torque motor coil obtains a positive control current signal, the torque motor generates a force proportional to the control current, the force is indirectly acted on the valve core after conversion, the valve core is enabled to generate displacement until the pressure of a brake cavity is balanced with the control force acted on the valve core, so that the servo valve outputs brake pressure proportional to the control signal, the pressure sensor is responsible for collecting the brake pressure, the pressure signal is fed back to the control box, the input pressure of the servo valve is adjusted according to the slipping state of the airplane wheel, and the running state of the airplane wheel is changed.
(3) Emergency braking state
When the normal brake breaks down, the system is automatically switched to the emergency port for oil supply at the moment, the valve core in the conversion valve is pushed to one end, the normal oil supply is closed, and the hydraulic oil enters the brake module through the cutoff protection unit.
(4) Leakage protection state
When the pipeline or the brake module at the downstream of the cutoff protection unit is repaired and disassembled to leak oil, the oil way can be automatically blocked after a certain volume of working fluid passes through, so that the work of the whole hydraulic system is not influenced.
The two-channel multifunctional integrated brake module provided by the technical scheme of the invention has the most basic function of providing brake pressure for the brake module and comprises two independent brake pressure adjusting branches. Each branch comprises a pressure servo valve, a pressure sensor and a hydraulic fuse, and an electromagnetic lock and an oil filter are shared by two brake pressure adjusting units. The electromagnetic lock is used for controlling the on-off of the oil inlet oil way; the pressure servo valve outputs brake pressure in linear proportion according to the magnitude of the input current; the pressure servo valve is responsible for collecting brake pressure signals and feeding the pressure signals back to the control box to form a closed-loop control circuit and provide stable brake pressure; the hydraulic insurance is used for automatically closing an oil circuit when a system pipeline is damaged, so that the oil loss of the system is prevented, and the oil return circuit of the integrated brake module is provided with a one-way valve to prevent the influence of return oil pressure fluctuation on the brake pressure. Each branch can provide functions such as oil circuit break-make, pressure feedback, pressure monitoring, open circuit protection required by braking, and through the integrated design, the number of pipe joints is reduced, the weight of the whole system is reduced, the arrangement of airplane pipelines is facilitated, and the leakage is reduced because the electromagnetic lock of the core element is in a plug-in arrangement.
Claims (9)
1. The utility model provides a multi-functional integrated brake module of binary channels which characterized in that, brake module includes: the hydraulic control system comprises a shell, a first pressure servo valve and a second pressure servo valve which are arranged on the upper surface of the shell, a first hydraulic fuse and a second hydraulic fuse which are arranged on the left side and the right side of the shell, and a first pressure sensor and a second pressure sensor which are arranged on the upper surface of the shell, wherein the first pressure sensor is positioned behind the first pressure servo valve, and the second pressure sensor is positioned behind the second pressure servo valve;
the first pressure sensor is provided with a first brake nozzle through a first oil filter component, and the second pressure sensor is provided with a second brake nozzle through a second oil filter component;
the first pressure servo valve, the second pressure servo valve, the first hydraulic fuse and the second hydraulic fuse are respectively communicated with an electromagnetic valve and a hydraulic control one-way valve which are arranged in the shell through corresponding pipelines;
the first pressure sensor is arranged between the outlet of the first hydraulic fuse and the first oil filter assembly, and the second pressure sensor is arranged between the outlet of the second hydraulic fuse and the second oil filter assembly.
2. The dual-channel multifunctional integrated brake module as claimed in claim 1,
the casing upper surface is provided with circular boss, the solenoid valve is installed inside the circular boss, just the solenoid valve is located between first pressure sensor and the second pressure sensor.
3. The dual-channel multifunctional integrated brake module as claimed in claim 1,
the length, width and height of the overall dimension of the shell are 136mm, 146mm and 55mm in sequence, and the length, width and height of the overall dimension of the brake module are 210mm, 203.2mm and 131.4mm in sequence.
4. The dual channel, multi-function integrated brake module of claim 1, further comprising a one-way valve, a first switching valve, and a second switching valve disposed within the housing;
an oil inlet of the first pressure servo valve is connected with an oil return port of the hydraulic control one-way valve, a brake port of the first pressure servo valve is connected with an oil inlet at one end of the first conversion valve, and the oil return port of the first pressure servo valve is connected with an oil inlet of the one-way valve;
an oil inlet of the second pressure servo valve is connected with an oil return port of the hydraulic control one-way valve, a brake port of the second pressure servo valve is connected with an oil inlet at one end of the second conversion valve, and the oil return port of the second pressure servo valve is connected with the oil inlet of the one-way valve;
an oil inlet of the first hydraulic fuse is connected with an oil return port of the first conversion valve, and an oil outlet of the first hydraulic fuse is connected with the left brake module;
and an oil inlet of the second hydraulic fuse is connected with an oil return port of the second conversion valve, and an oil outlet of the second hydraulic fuse is connected with the right brake module.
5. The dual-channel multifunctional integrated brake module according to claim 4, wherein the first switching valve and the second switching valve each comprise two oil inlet ports and one oil return port, respectively;
an oil inlet at one end of the first conversion valve is connected with a brake port of the first pressure servo valve, an oil inlet at the other end of the first conversion valve is connected with an oil supply port of an emergency system, and an oil return port of the first conversion valve is connected with an oil inlet of a first hydraulic fuse;
an oil inlet at one end of the second change-over valve is connected with a brake port of the second pressure servo valve, an oil inlet at the other end of the second change-over valve is connected with an oil supply port of the emergency system, and an oil return port of the second change-over valve is connected with an oil inlet of the second hydraulic fuse.
6. The dual-channel multifunctional integrated brake module as claimed in claim 1,
the oil inlet of the electromagnetic valve is connected with normal oil supply, the control port of the electromagnetic valve is connected with the control cavity of the hydraulic control one-way valve, and the oil return port of the electromagnetic valve is connected with the oil inlet of the one-way valve.
7. The dual-channel multifunctional integrated brake module as claimed in claim 1,
an oil inlet of the hydraulic control one-way valve is connected with normal oil supply;
and an oil return port of the one-way valve is in oil return connection with the brake system.
8. The dual-channel multifunctional integrated brake module as claimed in claim 1,
the oil inlet of the first pressure sensor is connected with the oil return port of the first hydraulic fuse, and the oil inlet of the second pressure sensor is connected with the oil return port of the second hydraulic fuse.
9. The dual-channel multifunctional integrated brake module of claim 1, further comprising: a third oil filter assembly and a fourth oil filter assembly;
the third oil is strained the subassembly and is installed inside emergent fuel feeding mouthpiece, the fourth oil is strained the inside of subassembly installation at normal fuel feeding mouthpiece.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020621829.4U CN212797292U (en) | 2020-04-22 | 2020-04-22 | Double-channel multifunctional integrated brake module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020621829.4U CN212797292U (en) | 2020-04-22 | 2020-04-22 | Double-channel multifunctional integrated brake module |
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| CN212797292U true CN212797292U (en) | 2021-03-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111516861A (en) * | 2020-04-22 | 2020-08-11 | 西安航空制动科技有限公司 | Double-channel multifunctional integrated brake device |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111516861A (en) * | 2020-04-22 | 2020-08-11 | 西安航空制动科技有限公司 | Double-channel multifunctional integrated brake device |
| CN111516861B (en) * | 2020-04-22 | 2022-11-18 | 西安航空制动科技有限公司 | Double-channel multifunctional integrated brake device |
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