Protective equipment for B737 aircraft fire bottle loop testing

Abstract

The application discloses a protection device for B737 airplane fire extinguishing bottle loop test, which comprises vertical strip support plates, a control box, two longitudinal strip support plates and four strip protection baffle plates; a display screen, a left fire extinguishing test button, an APU fire extinguishing test button, a right fire extinguishing test button, a state acquisition button, a loudspeaker and a power switch are arranged on the upper side of the control box; a microprocessor, a memory, a power module and a four-way motor driving circuit are arranged in the control box. The protection device for B737 airplane fire extinguishing bottle loop test can control the strip protection baffle plates by means of the left fire extinguishing test button, the APU fire extinguishing test button and the right fire extinguishing test button, and only the test area required by the current test is opened each time, so that the mis-triggering of other fire handles is effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of test protection devices, in particular, a kind of protective equipment for B737 aircraft fire bottle loop test. BACKGROUND

[0002] Boeing737 is the largest aircraft in the history of human civil aviation, its "heart" engine is praised as the pearl on the crown of human industry, civil aircraft engine has high price and precision. Can provide necessary power supply, gas source and power for aircraft, also APU is another important source of aircraft power. To deal with emergency conditions, set a set of fire extinguishing system inside, aircraft engine and APU fire extinguishing system is set in very close position, B-737 aircraft body is relatively old, its test architecture follows the design basis of 1960s, the error prevention design used in test process is to formulate work card, reference manual, and strictly according to the steps. 737 is provided with three fire bottle handles and uses the same part number, the feel is completely consistent. Aviation maintenance work pressure is big, in the construction process of high nervousness, it is easy to produce human error, and misoperation occurs. For example, the left fire handle of test aircraft triggers APU fire handle, which will cause great loss to aircraft, and needs to clean and replace pipeline, check aircraft core components, which will cause aircraft AOG phenomenon. At present, there is no protection device for fire bottle loop test in the prior art, therefore, it is necessary to design a kind of protective equipment for B737 aircraft fire bottle loop test, which can prevent misoperation of other fire handles during testing. INVENTION CONTENT

[0003] The present application relates to a kind of test protection devices, in particular, a kind of protective equipment for B737 aircraft fire bottle loop test.

[0004] Technical scheme: the protective equipment for B737 aircraft fire bottle loop test provided by the present application comprises a vertical strip support plate, a control box, two longitudinal strip support plates and four strip protection plates.

[0005] The front side ends of the two longitudinal strip-shaped supporting plates are fixed on the left and right ends of the lower side of the vertical strip-shaped supporting plate, and the two longitudinal strip-shaped supporting plates are longitudinally parallel; the control box is fixedly installed on the middle part of the upper side of the vertical strip-shaped supporting plate; a display screen, a left engine fire extinguishing test button, an APU fire extinguishing test button, a right engine fire extinguishing test button, a state acquisition button, a loudspeaker and a power switch are arranged on the upper side of the control box; a microprocessor, a memory, a power module and a four-way motor driving circuit are arranged in the control box; four rectangular holes are transversely arranged on the vertical strip-shaped supporting plate, and four strip-shaped protective baffle plates are horizontally inserted into the four rectangular holes in a penetrating mode; one mounting cavity is arranged in the vertical strip-shaped supporting plate and below the four rectangular holes; the four rectangular holes are in communication with the four mounting cavities; one driving motor is arranged in each of the four mounting cavities, and one driving gear is fixedly installed on the output shaft end of each of the four driving motors; one guide groove is longitudinally arranged on the middle part of the lower side of each of the four strip-shaped protective baffle plates, and a driving rack is arranged on the groove bottom of the guide groove; the four driving gears are partially embedded in the guide grooves at the corresponding positions and are in engagement with the driving racks in the guide grooves.

[0006] The microprocessor is electrically connected with the memory, the display screen, the left engine fire extinguishing test button, the APU fire extinguishing test button, the right engine fire extinguishing test button, the state acquisition button, the loudspeaker and the four-way motor driving circuit; the four-way motor driving circuit is electrically connected with the four driving motors; the power module supplies power for the microprocessor, the memory, the display screen, the left engine fire extinguishing test button, the APU fire extinguishing test button, the right engine fire extinguishing test button, the state acquisition button, the loudspeaker and the four-way motor driving circuit, and the power switch is connected in series on the power supply circuit of the power module.

[0007] Further, a magnetic strip is arranged on the lower side of each of the two longitudinal strip-shaped supporting plates.

[0008] Further, an LED lamp is arranged on the rear side of the control box; an LED driving circuit electrically connected with the microprocessor is arranged in the control box; the LED driving circuit is electrically connected with the LED lamp; and the power module supplies power for the LED driving circuit.

[0009] Further, a sound pickup device is arranged on the lower side of the control box; the microprocessor is electrically connected with the sound pickup device; and the power module supplies power for the sound pickup device.

[0010] Further, one camera is installed above each of the four rectangular holes on the rear side of the vertical strip-shaped supporting plate; the four cameras are electrically connected with the microprocessor and are used for image acquisition of the indicator light state below after the strip-shaped protective baffle plate moves forward; and the power module supplies power for the four cameras.

[0011] Furthermore, a wireless communication module electrically connected to the microprocessor is provided in the control box; and the power supply module supplies power to the wireless communication module.

[0012] Furthermore, two limiting holes for limiting buckles are provided on the lower side surfaces of the two longitudinal strip support plates.

[0013] Compared with the prior art, the invention has the following beneficial effects: the left engine fire extinguishing test button, the APU fire extinguishing test button and the right engine fire extinguishing test button can be used to control the strip protective baffle, and only the test area required for the current test is opened each time, thereby effectively avoiding the false triggering of other fire extinguishing handles; the cooperation of the guide groove, the drive rack, the drive motor and the drive gear can realize the stable translation drive of the strip protective baffle; the two longitudinal strip support plates can realize the stable support of the lower side of the vertical strip support plate; the installation cavity is used to install the drive motor and the drive gear to ensure the safety of the motor use; the key step information of the current test is displayed on the display screen, thereby providing on-site guidance for the test; the speaker is used to play the key voice prompt information of the current test, thereby providing on-site guidance for the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the top view of the structure created by the present invention;

[0015] Figure 2 A schematic diagram of a partial cross-sectional structure of the present invention;

[0016] Figure 3 A schematic diagram of the circuit structure created by the present invention;

[0017] Figure 4 The present invention creates a B737 aircraft P8 control panel that is protected during use. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0019] Example 1:

[0020] like Figures 1-3 As shown, the protective equipment for the loop test of the fire extinguisher bottle of B737 aircraft disclosed in the invention comprises: a vertical strip support plate 1, a control box 2, two longitudinal strip support plates 3 and four strip protection baffles 4;

[0021] The front side ends of the two longitudinal strip-shaped supporting plates 3 are fixed on the left and right ends of the lower side of the vertical strip-shaped supporting plate 1 respectively, and the two longitudinal strip-shaped supporting plates 3 are longitudinally parallel; the control box 2 is fixedly installed on the middle part of the upper side of the vertical strip-shaped supporting plate 1; a display screen 5, a left engine fire extinguishing test button 8, an APU fire extinguishing test button 9, a right engine fire extinguishing test button 10, a state acquisition button 11, a loudspeaker 13 and a power switch 12 are arranged on the upper side of the control box 2; a microprocessor, a memory, a power module and a four-way motor driving circuit are arranged in the control box 2; four rectangular holes 14 are horizontally arranged on the vertical strip-shaped supporting plate 1, and four strip-shaped protective baffles 4 are horizontally inserted into the four rectangular holes 14 respectively; one installation cavity 17 is arranged in the vertical strip-shaped supporting plate 1 and below the four rectangular holes 14; the four rectangular holes 14 are communicated with the four installation cavities 17 respectively; one driving motor 18 is arranged in each of the four installation cavities 17, and one driving gear 19 is fixedly installed on the output shaft end of each of the four driving motors 18; one guide groove 15 is longitudinally arranged on the lower side of each of the four strip-shaped protective baffles 4, and a driving rack 16 is arranged on the groove bottom of the guide groove 15; the four driving gears 19 are partially embedded in the corresponding guide grooves 15 respectively, and are engaged with the driving racks 16 in the guide grooves 15.

[0022] The microprocessor is electrically connected with the memory, the display screen 5, the left engine fire extinguishing test button 8, the APU fire extinguishing test button 9, the right engine fire extinguishing test button 10, the state acquisition button 11, the loudspeaker 13 and the four-way motor driving circuit respectively; the four-way motor driving circuit is electrically connected with the four driving motors 18 respectively; the power module supplies power for the microprocessor, the memory, the display screen 5, the left engine fire extinguishing test button 8, the APU fire extinguishing test button 9, the right engine fire extinguishing test button 10, the state acquisition button 11, the loudspeaker 13 and the four-way motor driving circuit respectively, and the power switch 12 is connected in series on the power supply circuit of the power module.

[0023] The left engine fire extinguishing test button 8, the APU fire extinguishing test button 9 and the right engine fire extinguishing test button 10 can be used to control the strip-shaped protective baffles 4, and only the test area needed for current test is opened each time, so that the mis-triggering of other fire extinguishing handles is effectively avoided; the cooperation of the guide groove 15, the driving rack 16, the driving motor 18 and the driving gear 19 can realize the stable translation driving of the strip-shaped protective baffles 4; the two longitudinal strip-shaped supporting plates 3 can realize the stable support of the lower side of the vertical strip-shaped supporting plate 1; the installation cavities 17 are used to install the driving motor 18 and the driving gear 19, so as to ensure the safety of the motor; the display screen 5 is used to display the key step information of current test, so as to guide the test on site; the loudspeaker 13 is used to play the key voice prompt information of current test, so as to guide the test on site.

[0024] Further, the two longitudinal strip-shaped supporting plates 3 are provided with magnetic strips 20 on the lower sides. The magnetic strips 20 can be used to adsorb the two longitudinal strip-shaped supporting plates 3 on the left and right sides of the P8 control panel, thereby enhancing the stability of the device.

[0025] Further, the control box 2 is provided with an LED lamp 21 on the rear side; the control box 2 is provided with an LED driving circuit electrically connected with the microprocessor; the LED driving circuit is electrically connected with the LED lamp 21; and the power module supplies power to the LED driving circuit. The LED lamp 21 can be used for lighting, thereby facilitating the test operation of the tester and the image acquisition of the camera 7.

[0026] Further, the control box 2 is provided with a sounder 6 on the lower side; the microprocessor is electrically connected with the sounder 6; and the power module supplies power to the sounder 6. The sounder 6 can be used to collect the alarm sound during the test.

[0027] Further, the vertical strip-shaped supporting plate 1 is provided with a camera 7 on the rear side and above each of the four rectangular holes 14; the four cameras 7 are electrically connected with the microprocessor, and are used to collect the image of the indicator light below after the strip-shaped protective baffle 4 moves forward; and the power module supplies power to the four cameras 7. The cameras 7 can be used to collect and store the image of the indicator light on the P8 control panel during the test.

[0028] Further, the control box 2 is provided with a wireless communication module electrically connected with the microprocessor; and the power module supplies power to the wireless communication module. The wireless communication module can be used to communicate with the host computer wirelessly, thereby enabling the microprocessor to upload the collected key state image and alarm sound to the host computer wirelessly for storage.

[0029] Further, the two longitudinal strip-shaped supporting plates 3 are provided with two limiting holes 27 for limiting buckles on the lower sides. The limiting holes 27 can be used to position the positions of the two longitudinal strip-shaped supporting plates 3, thereby ensuring the reliability of the protective device.

[0030] In the protective equipment for loop testing of fire extinguisher bottles on a B737 aircraft disclosed in the present invention, a microprocessor adopts an existing single-chip microcomputer controller module, such as an STM32 single-chip microcomputer module, for realizing coordinated control; a wireless communication module adopts an existing WiFi module for wireless communication with a host computer; a camera 7 adopts an existing camera for capturing an image of the indicator light status on a P8 control panel; an LED drive circuit is a supporting circuit for an LED lamp 21 and can adopt an existing circuit structure; a microphone 6 can adopt an existing microphone for collecting alarm sounds during testing; a memory can adopt an existing memory for storing images, alarm sounds, and prompt sounds obtained during testing; a display screen 5 can adopt an existing display screen for displaying test prompt information to facilitate prompting and guiding test personnel; a speaker 13 can adopt an existing speaker for playing prompt sounds during testing; a motor drive circuit and a drive motor 18 are arranged in a supporting manner and can adopt an existing stepper motor drive circuit and a stepper motor; and a power module is composed of a lithium battery and a battery charge and discharge circuit for realizing power supply.

[0031] like Figure 4 As shown, when the protective equipment for the fire extinguisher loop test of the B737 aircraft disclosed in the present invention is used, first, the two longitudinal strip support plates 3 are pressed on the left and right sides of the P8 control panel, and the fixing bolts 26 on the left and right sides are embedded in the limit holes 27 at the corresponding positions, and the four strip protective baffles 4 are respectively located above the test switch area 22, the left engine test area 23, the APU test area 24 and the right engine test area 25.

[0032] After the left engine fire extinguishing test button 8 is triggered, the microprocessor first drives the LED lamp 21 to illuminate through the LED driving circuit, and then the microprocessor drives the first and second driving motors 18 from the left to work through the motor driving circuit, and moves the two strip-shaped protective baffles 4 on the left side to the front side, thereby opening the test switch area 22 and the shielding above the left engine test area 23, and then the tester performs the left engine fire extinguishing test operation. After the test operation is completed, the tester triggers the status acquisition button 11, and the corresponding camera 7 tests the test switch area 22 and the left engine test area 23. The status image of the indicator light on the test area 23 is collected, and at the same time, the microphone 6 collects the alarm sound at a fixed time (for example, 15-30 seconds of collection time). The tester then presses the status collection button 11 again, indicating that the collection is completed. The microprocessor controls the first and second drive motors 18 from the left through the motor drive circuit, and moves the two strip protective baffles 4 on the left to the rear to close the test switch area 22 and the left-side test area 23. At the same time, the microprocessor wirelessly uploads the collected button status image and alarm sound to the host computer through the wireless communication module for storage.

[0033] After the APU fire extinguishing test button 9 is triggered, the microprocessor drives the first and third driving motors 18 from left to work through the motor drive circuit, moves the first and third strip-shaped protective baffle 4 from left to the front side, thereby opening the shielding above the test switch area 22 and the APU test area 24, and then the test personnel perform the APU fire extinguishing test operation, and the other operation steps are the same as the left engine fire extinguishing test.

[0034] After the right engine fire extinguishing test button 10 is triggered, the microprocessor drives the first and fourth driving motors 18 from left to work through the motor drive circuit, moves the first and fourth strip-shaped protective baffle 4 from left to the front side, thereby opening the shielding above the test switch area 22 and the right engine test area 25, and then the test personnel perform the right engine fire extinguishing test operation, and the other operation steps are the same as the left engine fire extinguishing test.

[0035] During the test, after the corresponding test button is pressed, the display screen 5 displays the key step information of the current test, and the loudspeaker 13 is used to play the key voice prompt information of the current test, and these information are pre-set in the memory.

[0036] As described above, although the present application has been represented and expressed with reference to specific preferred embodiments, it must not be interpreted as a limitation of the present application itself. Various changes can be made in form and details without departing from the spirit and scope of the present application defined in the appended claims.

Claims

1. A containment apparatus for B737 aircraft fire bottle loop testing, characterized by: It comprises a vertical strip support plate (1), a control box (2), two longitudinal strip support plates (3) and four strip protective baffles (4); The front ends of the two longitudinal strip support plates (3) are respectively fixed on the left and right ends of the lower side of the vertical strip support plate (1), and the two longitudinal strip support plates (3) are longitudinally parallel; the control box (2) is fixedly installed on the middle part of the upper side of the vertical strip support plate (1); a display screen (5), a left engine fire extinguishing test button (8), an APU fire extinguishing test button (9), a right engine fire extinguishing test button (10), a status acquisition button (11), a speaker (13) and a power switch (12) are arranged on the upper side of the control box (2); a microprocessor, a memory, a power module and a four-way motor drive circuit are arranged in the control box (2); four rectangular holes (14) are horizontally distributed on the vertical strip support plate (1), and four strip protective baffles (4) are respectively inserted horizontally. Installed in four rectangular holes (14); a mounting cavity (17) is provided in the vertical strip support plate (1) and below the four rectangular holes (14); the four rectangular holes (14) are respectively connected to the four mounting cavities (17); a driving motor (18) is provided in each of the four mounting cavities (17), and a driving gear (19) is fixedly installed at the end of the output shaft of each of the four driving motors (18); a guide groove (15) is longitudinally provided in the middle of the lower side surface of each of the four strip-shaped protective baffles (4), and a driving rack (16) is provided on the bottom of the guide groove (15); the four driving gears (19) are partially embedded in the guide groove (15) at the corresponding position, and mesh with the driving rack (16) in the guide groove (15); The microprocessor is electrically connected to the memory, the display screen (5), the left engine fire extinguishing test button (8), the APU fire extinguishing test button (9), the right engine fire extinguishing test button (10), the status acquisition button (11), the speaker (13), and the four-way motor drive circuit respectively; the four-way motor drive circuit is electrically connected to the four drive motors (18) respectively; The power module supplies power to the microprocessor, the memory, the display screen (5), the left engine fire extinguishing test button (8), the APU fire extinguishing test button (9), the right engine fire extinguishing test button (10), the status acquisition button (11), the speaker (13) and the four-way motor drive circuit, and the power switch (12) is connected in series to the power supply circuit of the power module; Two limiting holes (27) for limiting buckles are provided on the lower side surfaces of the two longitudinal strip support plates (3); Magnetic strips (20) are provided on the lower sides of the two longitudinal strip-shaped support plates (3).

2. The containment apparatus for B737 aircraft fire bottle loop testing of claim 1, wherein: An LED lamp (21) is provided on the rear side of the control box (2); an LED drive circuit electrically connected to the microprocessor is provided in the control box (2); the LED drive circuit is electrically connected to the LED lamp (21); and a power module supplies power to the LED drive circuit.

3. The containment apparatus for B737 aircraft fire bottle loop testing of claim 1, wherein: A microphone (6) is provided on the lower side of the control box (2); the microprocessor is electrically connected to the microphone (6); and the power module supplies power to the microphone (6).

4. The containment apparatus for B737 aircraft fire bottle loop testing of claim 1, wherein: A camera (7) is installed on the rear side of the vertical strip-shaped supporting plate (1) and above each of the four rectangular holes (14); the four cameras (7) are electrically connected with the microprocessor and used for image acquisition of the state of the indicator light below after the forward movement of the strip-shaped protective baffle (4); the power module supplies power for the four cameras (7).

5. The containment apparatus for B737 aircraft fire bottle loop testing of claim 1, wherein: The wireless communication module electrically connected with the microprocessor is arranged in the control box (2); and the power module supplies power for the wireless communication module.

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