阅读说明：本技术 一种b737飞机发动机apu灭火瓶环路测试保护装置 (B737 aircraft engine APU fire bottle loop test protection device ) 是由 储开圣 陈进京 赵安琪 都航 于 2020-12-10 设计创作，主要内容包括：本发明创造公开了一种B737飞机发动机APU灭火瓶环路测试保护装置,包括竖向条形撑板、控制盒、两根纵向条形撑板、四块条形防护挡板以及一根L形把手杆；在控制盒上设置有显示屏、左发灭火测试按钮、APU灭火测试按钮、右发灭火测试按钮、测试完成按钮以及电源开关；在控制盒内设有微处理器、存储器、电源模块以及四路电机驱动电路。该B737飞机发动机APU灭火瓶环路测试保护装置利用左发灭火测试按钮、APU灭火测试按钮、右发灭火测试按钮能够实现对条形防护挡板的控制,且每次只打开当前测试需要用到的测试区域,从而有效避免其他灭火手柄的误触发；利用L形把手杆的设置,能够便于携带保护装置,且在进行测试防护时还能够便于稳定保护装置。(The invention discloses a B737 aircraft engine APU fire bottle loop test protection device, which comprises vertical strip-shaped supporting plates, a control box, two longitudinal strip-shaped supporting plates, four strip-shaped protective baffles and an L-shaped handle rod, wherein the control box is arranged on the vertical strip-shaped supporting plates; the control box is provided with a display screen, a left fire extinguishing test button, an APU fire extinguishing test button, a right fire extinguishing test button, a test completion button and a power switch; a microprocessor, a memory, a power module and a four-way motor driving circuit are arranged in the control box. The B737 aircraft engine APU fire bottle loop test protection device can realize the control of the strip-shaped protective baffle by utilizing the left fire extinguishing test button, the APU fire extinguishing test button and the right fire extinguishing test button, and only opens the test area required by the current test each time, thereby effectively avoiding the false triggering of other fire extinguishing handles; utilize the setting of L shape handle pole, can portable protection device, and can also be convenient for stabilize protection device when testing the protection.)

1. The utility model provides a B737 aircraft engine APU fire bottle loop test protection device which characterized in that: comprises vertical strip-shaped supporting plates (1), a control box (2), two longitudinal strip-shaped supporting plates (3), four strip-shaped protective baffles (4) and an L-shaped handle rod (7);

the front side ends of the two longitudinal strip-shaped supporting plates (3) are respectively fixed on the left end and the right end of the lower side edge of the vertical strip-shaped supporting plate (1), and the two longitudinal strip-shaped supporting plates (3) are longitudinally parallel; the control box (2) is fixedly arranged at the right end of the upper side of the vertical strip-shaped supporting plate (1); the vertical rod of the L-shaped handle rod (7) is vertically and fixedly arranged at the left end of the upper side of the vertical strip-shaped supporting plate (1), and the horizontal rod of the L-shaped handle rod (7) points to the front side; a display screen (5), a left fire extinguishing test button (8), an APU fire extinguishing test button (9), a right fire extinguishing test button (10), a test completion button (11) and a power switch (12) are arranged on the upper side surface of the control box (2); a microprocessor, a memory, a power supply module and a four-way motor driving circuit are arranged in the control box (2); four rectangular holes (14) are distributed on the vertical strip-shaped supporting plate (1) in the transverse direction, and four strip-shaped protective baffles (4) are respectively inserted into the four rectangular holes (14) in a penetrating manner; a driving motor (18) is arranged on the front side surface of the vertical strip-shaped supporting plate (1) and below the four rectangular holes (14) through a C-shaped clamping seat (19); the end parts of the output shafts of the four driving motors (18) are fixedly provided with a driving gear (19); a guide groove (15) is longitudinally arranged in the middle of the lower side surface of each of the four strip-shaped protective baffles (4), and a driving rack (16) is longitudinally arranged on the groove edge on one side of the guide groove (15); the four driving gears (19) respectively extend into the guide grooves (15) at the corresponding positions and are meshed with the driving racks (16) in the guide grooves (15);

the microprocessor is respectively and electrically connected with the memory, the display screen (5), the left fire extinguishing test button (8), the APU fire extinguishing test button (9), the right fire extinguishing test button (10), the test completion button (11) and the four-way motor driving circuit; the four motor driving circuits are respectively electrically connected with four driving motors (18); the power supply module supplies power for a microprocessor, a memory, a display screen (5), a left fire extinguishing test button (8), an APU fire extinguishing test button (9), a right fire extinguishing test button (10), a test completion button (11) and four-way motor drive circuits respectively, and a power switch (12) is connected in series on a power supply line of the power supply module.

2. The B737 aircraft engine APU fire bottle loop test protection device of claim 1, wherein: a handle rubber sleeve (6) is sleeved on the horizontal rod of the L-shaped handle rod (7).

3. The B737 aircraft engine APU fire bottle loop test protection device of claim 2, wherein: anti-skid convex rings (13) are arranged on the handle rubber sleeve (6) at intervals.

4. The B737 aircraft engine APU fire bottle loop test protection device of claim 1, wherein: magnetic suction strips (20) are arranged on the lower side surfaces of the two longitudinal strip-shaped supporting plates (3).

5. The B737 aircraft engine APU fire bottle loop test protection device of claim 1, wherein: two limiting holes (27) used for limiting buckles are arranged on the lower side surfaces of the two longitudinal strip-shaped supporting plates (3).

6. The B737 aircraft engine APU fire bottle loop test protection device of claim 1, wherein: a side baffle (21) is vertically arranged on the left side and the right side of the lower side of the four strip-shaped protective baffles (4); the left side and the right side of the hole wall of the lower side surfaces of the four rectangular holes (14) are respectively provided with a rectangular notch; each side baffle (21) penetrates through the vertical strip-shaped supporting plate (1) through a rectangular notch at a corresponding position.

Technical Field

The invention relates to a test protection device, in particular to a B737 aircraft engine APU fire bottle loop test protection device.

Background

Boeing737 is the airplane with the largest equipment amount in the human civil aviation history, and its 'heart' engine is known as Mingzhu in the crown of the human industry field, and the civil airplane engine has high price and precision. The aircraft can be provided with necessary power supply, air supply and power, and the APU is also another important source of the aircraft and the power supply. In order to deal with emergency, a set of fire extinguishing system is arranged in the aircraft engine and the fire extinguishing system of the APU are arranged at extremely close positions, the B-737 aircraft body is old, the test framework of the aircraft engine is based on the design foundation of the last 60 years, and the error prevention design used in the test process is implemented strictly according to steps by formulating a work card and a reference manual. 737 has three fire-extinguishing bottle handles with the same number, and has completely consistent hand feeling. In the construction process of high aviation maintenance engineering work pressure and high mental stress, human errors are easy to generate, and the phenomenon of false triggering occurs. For example, the left fire of a test aircraft presses the test handle that the handle of putting out a fire pressed the APU by mistake, can bring huge loss for the aircraft, needs to wash and sets up the change pipeline, to aircraft core component inspection, can cause the aircraft AOG phenomenon. At present, a protection device for loop test of a fire extinguisher bottle does not exist in the prior art, so that a B737 aircraft engine APU fire extinguisher bottle loop test protection device is needed to be designed, and a test handle can be prevented from being pressed by mistake during testing.

Summary of the invention

The invention has the following aims: the utility model provides a B737 aircraft engine APU fire extinguisher cylinder loop test protection device, can prevent to press the test handle by mistake when testing.

The technical scheme is as follows: the invention provides a B737 aircraft engine APU fire bottle loop test protection device, which comprises vertical strip-shaped supporting plates, a control box, two longitudinal strip-shaped supporting plates, four strip-shaped protective baffles and an L-shaped handle rod, wherein the control box is arranged on the upper portion of the vertical strip-shaped supporting plates;

the front side ends of the two longitudinal strip-shaped supporting plates are respectively fixed at the left end and the right end of the lower side edge of the vertical strip-shaped supporting plate, and the two longitudinal strip-shaped supporting plates are longitudinally parallel; the control box is fixedly arranged at the right end of the upper side of the vertical strip-shaped supporting plate; the vertical rod of the L-shaped handle rod is vertically and fixedly arranged at the left end of the upper side edge of the vertical strip-shaped supporting plate, and the horizontal rod of the L-shaped handle rod points to the front side; the upper side surface of the control box is provided with a display screen, a left fire extinguishing test button, an APU fire extinguishing test button, a right fire extinguishing test button, a test completion button and a power switch; a microprocessor, a memory, a power supply module and a four-way motor driving circuit are arranged in the control box; four rectangular holes are distributed on the vertical strip-shaped supporting plate in the transverse direction, and four strip-shaped protective baffles are respectively inserted into the four rectangular holes in a penetrating manner; a driving motor is arranged on the front side surface of the vertical strip-shaped supporting plate and below the four rectangular holes through a C-shaped clamping seat; the end parts of the output shafts of the four driving motors are fixedly provided with a driving gear; a guide groove is longitudinally arranged in the middle of the lower side surface of each of the four strip-shaped protective baffles, and a driving rack is longitudinally arranged on the groove edge on one side of the guide groove; the four driving gears respectively extend into the guide grooves at the corresponding positions and are meshed with the driving racks in the guide grooves;

the microprocessor is respectively and electrically connected with the memory, the display screen, the left fire extinguishing test button, the APU fire extinguishing test button, the right fire extinguishing test button, the test completion button and the four-way motor driving circuit; the four motor driving circuits are respectively electrically connected with the four driving motors; the power module supplies power for the microprocessor, the memory, the display screen, the left fire extinguishing test button, the APU fire extinguishing test button, the right fire extinguishing test button, the test completion button and the four-way motor drive circuit respectively, and the power switch is connected in series on a power supply line of the power module.

Furthermore, a handle rubber sleeve is sleeved on the horizontal rod of the L-shaped handle rod.

Furthermore, anti-skidding convex rings are arranged on the handle rubber sleeve at intervals.

Furthermore, magnetic suction strips are arranged on the lower side surfaces of the two longitudinal strip-shaped supporting plates.

Furthermore, two limiting holes used for limiting buckles are formed in the lower side faces of the two longitudinal strip-shaped supporting plates.

Furthermore, a side baffle is vertically arranged on the left side and the right side of the lower side of each of the four strip-shaped protective baffles; the left side and the right side of the hole wall of the lower side surfaces of the four rectangular holes are respectively provided with a rectangular notch; each side baffle is penetrated through the vertical bar fagging by the rectangle notch of corresponding position department.

Compared with the prior art, the invention has the beneficial effects that: the control of the strip-shaped protective baffle can be realized by utilizing 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 false triggering of other fire extinguishing handles is effectively avoided; the stable translational driving of the strip-shaped protective baffle can be realized by utilizing the matching of the guide groove, the driving rack, the driving motor and the driving gear; the protection device can be conveniently carried by using the L-shaped handle rod, and the protection device can be conveniently stabilized during test protection; the lower side edges of the vertical strip-shaped supporting plates can be stably supported by utilizing the two longitudinal strip-shaped supporting plates; and displaying the key step information of the current test by using a display screen so as to guide the test on site.

Drawings

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is a partial sectional structural view of the present invention;

FIG. 3 is a schematic diagram of the circuit structure of the present invention;

fig. 4 shows a P8 control panel of a B737 aircraft, which is protected in use, according to the invention.

Detailed Description

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

Example 1:

as shown in fig. 1-3, the B737 aircraft engine APU fire extinguisher cylinder loop test protection device of the invention includes: the device comprises vertical strip-shaped supporting plates 1, a control box 2, two longitudinal strip-shaped supporting plates 3, four strip-shaped protective baffles 4 and an L-shaped handle rod 7;

the front side ends of the two longitudinal strip-shaped supporting plates 3 are respectively fixed on the left end and the right end of the lower side edge of the vertical strip-shaped supporting plate 1, and the two longitudinal strip-shaped supporting plates 3 are longitudinally parallel; the control box 2 is fixedly arranged at the right end of the upper side of the vertical strip-shaped supporting plate 1; the vertical rod of the L-shaped handle rod 7 is vertically and fixedly arranged at the left end of the upper side edge of the vertical strip-shaped supporting plate 1, and the horizontal rod of the L-shaped handle rod 7 points to the front side; the upper side surface of the control box 2 is provided with a display screen 5, a left fire extinguishing test button 8, an APU fire extinguishing test button 9, a right fire extinguishing test button 10, a test completion button 11 and a power switch 12; a microprocessor, a memory, a power supply module and four-way motor driving circuits are arranged in the control box 2; four rectangular holes 14 are distributed on the vertical strip-shaped supporting plate 1 in the transverse direction, and the four strip-shaped protective baffles 4 are respectively inserted into the four rectangular holes 14 in a penetrating manner; a driving motor 18 is arranged on the front side surface of the vertical strip-shaped supporting plate 1 and below the four rectangular holes 14 through a C-shaped clamping seat 19; the end parts of the output shafts of the four driving motors 18 are fixedly provided with a driving gear 19; a guide groove 15 is longitudinally arranged in the middle of the lower side surfaces of the four strip-shaped protective baffles 4, and a driving rack 16 is longitudinally arranged on one side groove edge of the guide groove 15; the four driving gears 19 respectively extend into the guide grooves 15 at the corresponding positions and are meshed with the driving racks 16 in the guide grooves 15;

the microprocessor is respectively and electrically connected with the memory, the display screen 5, the left fire extinguishing test button 8, the APU fire extinguishing test button 9, the right fire extinguishing test button 10, the test completion button 11 and the four-way motor driving circuit; the four motor driving circuits are respectively electrically connected with the four driving motors 18; the power module supplies power for microprocessor, memory, display screen 5, left-handed fire extinguishing test button 8, APU fire extinguishing test button 9, right-handed fire extinguishing test button 10, test completion button 11 and four-way motor drive circuit respectively, and switch 12 connects in series on power supply line of power module.

The left fire extinguishing test button 8, the APU fire extinguishing test button 9 and the right fire extinguishing test button 10 are utilized to control the strip-shaped protective baffle 4, and only a test area required by the current test is opened each time, so that the false triggering of other fire extinguishing handles is effectively avoided; the stable translational driving of the strip-shaped protective baffle 4 can be realized by the matching of the guide groove 15, the driving rack 16, the driving motor 18 and the driving gear 19; the protection device can be conveniently carried by using the L-shaped handle rod 7, and the protection device can be conveniently stabilized during test protection; the lower side edge of the vertical strip-shaped supporting plate 1 can be stably supported by utilizing the two longitudinal strip-shaped supporting plates 3; and displaying the information of the key steps of the current test by using the display screen 5 so as to guide the test on site.

Further, a handle rubber sleeve 6 is sleeved on a horizontal rod of the L-shaped handle rod 7. The use of the grip rubber 6 can enhance the comfort of use in gripping.

Furthermore, anti-skid convex rings 13 are arranged on the handle rubber sleeve 6 at intervals. The antiskid convex ring 13 can enhance the antiskid performance of the rubber sleeve 6 when being held.

Furthermore, magnetic suction strips 20 are arranged on the lower side surfaces of the two longitudinal strip-shaped supporting plates 3. Utilize magnetism to inhale strip 20 can be convenient for adsorb two vertical strip fagging 3 on the left and right sides side of P8 control panel, the stability of reinforcing equipment use.

Further, two limiting holes 27 used for limiting the buckles are formed in the lower side faces of the two longitudinal strip-shaped supporting plates 3. The position of the two longitudinal strip-shaped supporting plates 3 can be positioned by utilizing the limiting holes 27, so that the use reliability of the protective device is ensured.

Further, a side baffle 21 is vertically arranged on the left side and the right side of the lower side of the four strip-shaped protective baffles 4; a rectangular notch is formed in each of the left side edge and the right side edge of the hole wall of the lower side surface of each of the four rectangular holes 14; each side baffle 21 penetrates through the vertical strip-shaped supporting plate 1 through a rectangular notch at a corresponding position. The left side and the right side of the strip-shaped protective baffle 4 can be protected by the side baffles 21 on the left side and the right side, so that the fire extinguishing handle in other areas is prevented from being touched by mistake from the sides, and the reliability of protection is ensured.

In the B737 aircraft engine APU fire bottle loop test protection device disclosed by the invention, a microprocessor adopts the existing single chip microcomputer controller module, such as an STM32 single chip microcomputer module, for realizing coordination control; the memory adopts the existing memory and is used for storing the test prompt information; the display screen 5 is only required to be an existing display screen and is used for displaying test prompt information so as to prompt and guide a tester conveniently; the motor driving circuit and the driving motor 18 are matched, and the existing stepping motor driving circuit and the existing stepping motor are adopted; the power module is composed of a lithium battery and a battery charging and discharging circuit and is used for realizing power supply.

As shown in fig. 4, when the B737 aircraft engine APU fire extinguisher bottle loop test protection device disclosed by the present invention is used, firstly, two longitudinal strip-shaped supporting plates 3 are pressed on the left and right sides of a P8 control board, and fixing bolts 26 on the left and right sides are embedded into limiting holes 27 at corresponding positions, and four strip-shaped protective baffles 4 are respectively located above a test electric door area 22, a left-hair test area 23, an APU test area 24 and a right-hair test area 25.

After the test button 8 that puts out a fire was sent out on a left side triggers, it plays first and second driving motor 18 work to correspond the drive left side by microprocessor through motor drive circuit, two bar shaped protective baffle plates 4 on the left side move to the front side, thereby open the sheltering from of test electric door region 22 and the test region 23 top of sending out on a left side, carry out the test operation of putting out a fire on a left side again by the tester, after test operation accomplishes, trigger test completion button 11 by the tester, show that the test is accomplished, microprocessor corresponds two driving motor 18 work of first and second that play on a left side through motor drive circuit, move two bar shaped protective baffle plates 4 on the left side to the rear side and close test electric door region 22 and the test region 23 of sending out on a left side.

After APU test button 9 triggers that puts out a fire, microprocessor corresponds drive first and third driving motor 18 work on a left side through motor drive circuit, and first and third bar guard flap 4 that will play a left side removes to the front side to open the sheltering from above test electric door region 22 and APU test region 24, carry out APU test operation that puts out a fire by the tester again, other operating procedure with the left side test of putting out a fire.

After the test button 10 of putting out a fire is sent out to the right and is triggered, microprocessor corresponds drive first 18 work of first and fourth driving motor in a left side through motor drive circuit, and it removes to the front side to play first 4 and fourth bar guard flap in a left side to open the sheltering from of test electric door region 22 and test region 25 top is sent out on the right side, send out the test operation of putting out a fire by the tester on the right side again, other operating procedure send out the test of putting out a fire with the left side.

In the testing process, after the corresponding testing button is pressed, the display screen 5 displays the key step information of the current test, and the information is preset in the memory.

As mentioned above, although the invention has been shown and described with reference to certain preferred embodiments, it should not be construed as being limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.