A test box for an aircraft cargo compartment fire bottle trigger circuit

Abstract

The utility model discloses a kind of test box for airplane cargo hold fire bottle trigger circuit, including test shell, supporting mechanism, controller and acquisition connector.The test box for airplane cargo hold fire bottle trigger circuit utilizes acquisition connector to butt joint the trigger circuit of fire bottle, the voltage data of the trigger circuit of fire bottle is collected by voltage acquisition circuit of controller, and voltage data is directly displayed by display screen, direct detection of fire bottle trigger circuit is realized, without external voltmeter;Utilize supporting structure and test shell to form relatively simple structure, volume is smaller, and portability is higher, simultaneously, supporting structure can be supported according to the position of trigger circuit and the size of surrounding space State and the switching of storage state, further improve portability.

Description

Technical Field

[0001] This utility model relates to a testing device, and more particularly to a test box for triggering circuits of fire extinguishing bottles in aircraft cargo holds. Background Technology

[0002] Aircraft are equipped with fire alarm systems and fire extinguishers. During aircraft maintenance, it is necessary to test whether the fire alarm system and fire extinguishing circuit are functioning properly. The fire extinguishing circuit refers to the trigger circuit that controls the release of the fire extinguisher. In the event of a fire, the pilot must operate the fire extinguishing circuit to trigger the explosive cap to release the fire extinguisher. When the trigger circuit of the fire extinguisher malfunctions, the explosive cap may fail to be triggered. Therefore, testing the trigger circuit of the fire extinguisher is an essential part of maintenance. Existing testing devices are usually bulky, while the space near the trigger circuit is usually small, making wiring difficult. In addition, some testing devices require an external voltmeter, which is cumbersome. Therefore, a test box for the trigger circuit of fire extinguishers in aircraft cargo holds is proposed to test the trigger circuit of fire extinguishers, while being small in size and highly portable. Utility Model Content

[0003] Purpose of the utility model: To provide a test box for the triggering circuit of fire extinguishing bottles in aircraft cargo hold, used to test the triggering circuit of fire extinguishing bottles, while being small in size and highly portable.

[0004] Technical Solution: The present invention provides a test box for triggering circuits of fire extinguishing bottles in aircraft cargo holds, comprising a test shell, a support mechanism, a controller, and a data acquisition connector; the support mechanism includes two support branches; the controller is installed inside the test shell; a buzzer, a display screen, and an indicator light, electrically connected to the controller, are installed on the test shell; the data acquisition connector is installed on the test shell and electrically connected to the controller through a voltage acquisition circuit; a dust plug for fastening to the data acquisition connector is fixed on the test shell by a pull rope; two support slots are provided on the test shell; the two support branches are respectively installed on the two support slots for supporting the test shell; the two support slots are respectively used to accommodate the two support branches.

[0005] Furthermore, the support branch includes a limiting unit, a support tube, a telescopic rod, and a support rod; one end of the support tube is oscillatingly mounted on the support slot and is used to house it within the support slot; the limiting unit is mounted on the lower side of the test housing and is used to position the support tube by swing; one end of the telescopic rod is telescopically adjustable and mounted on the other end of the support tube; a swing slot is provided on the other end of the telescopic rod; one end of the support rod is rotatably adjustable and mounted on the lower end of the swing slot, and is used to support it on the ground; the swing slot is used to house the support rod.

[0006] Furthermore, the limiting unit includes a limiting seat and a limiting slider; the limiting seat is mounted on the lower side of the test housing; the limiting slider is telescopically slidably mounted on the limiting seat; a limiting spring for driving the limiting slider to extend is installed inside the limiting seat; and a support tube is used to support the extended side of the limiting slider.

[0007] Furthermore, a storage slot is provided on the upper side of the test housing; a shorthand board and a flexible clip for holding the marker are provided on the bottom of the storage slot; and a baffle for covering the storage slot is slidably installed on the storage slot.

[0008] Compared with the prior art, the advantages of this utility model are as follows: It utilizes a data acquisition connector to connect to the trigger circuit of the fire extinguisher bottle. The controller acquires voltage data from the trigger circuit of the fire extinguisher bottle through a voltage acquisition circuit and directly displays the voltage data on a screen, achieving direct detection of the fire extinguisher bottle trigger circuit without the need for an external voltmeter. The supporting structure and test shell form a relatively simple structure, resulting in a small size and high portability. Furthermore, the supporting structure can switch between a supporting state and a storage state according to the position of the trigger circuit and the size of the surrounding space, further improving portability. A dust plug provides some dust protection for the data acquisition connector. A buzzer and indicator light, under the control of the controller, emit sound or light signals. For example, after a preset voltage value is obtained, if the voltage value of the fire extinguisher bottle trigger circuit acquired by the voltage acquisition circuit is not the preset value, the controller controls the buzzer to emit a warning sound and controls the indicator light to flash. Attached Figure Description

[0009] Figure 1 This is a top view of the present invention;

[0010] Figure 2 This is the front view of the present invention;

[0011] Figure 3 This is a cross-sectional view of the support tube of this utility model;

[0012] Figure 4 This is a schematic diagram of the support mechanism of this utility model in its stowed state;

[0013] Figure 5 This is a schematic diagram of the circuit structure of this utility model;

[0014] In the diagram: 1. Test housing; 2. Display screen; 3. Indicator light; 4. Power switch; 5. Amplifier hole; 6. Data acquisition connector; 7. Dust plug; 8. Storage slot; 9. Elastic buckle; 10. Baffle; 11. Actuating protrusion; 12. Shorthand board; 13. Support slot; 14. Support tube; 15. Telescopic slider; 16. Telescopic rod; 17. Swing slot; 18. Support rod; 19. Sliding groove; 20. Limit seat; 21. Limit slider; 22. Actuating rod; 23. Pressing bolt; 24. Telescopic locking bolt. Detailed Implementation

[0015] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings, but the protection scope of this utility model is not limited to the described embodiments.

[0016] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0017] In the description of this utility model, it should be understood that the terms "left", "right", "front", "back", "up", "down", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Example 1:

[0019] like Figure 1-5As shown, the test box for triggering circuits of fire extinguishers in aircraft cargo holds provided by this utility model includes: a test housing 1, a support mechanism, a controller, and a data acquisition connector 6; the support mechanism includes two support branches; the controller is installed inside the test housing 1; a buzzer electrically connected to the controller is installed inside the test housing 1; several amplification holes 5 corresponding to the positions of the buzzer are provided on the upper side of the test housing 1; a display screen 2 and indicator lights 3 electrically connected to the controller are installed on the upper side of the test housing 1; the data acquisition connector 6 is installed on the test housing 1 and acquires voltage data. The circuit is electrically connected to the controller; a battery for power supply is installed inside the test housing 1; a power switch 4 installed on the upper side of the test housing 1 is connected in series with the power supply line of the battery; a dust plug 7 is fixed to the test housing 1 by a pull rope, and the dust plug 7 is used to snap onto the acquisition connector 6; support slots 13 extending to the lower side and the right side are respectively provided on the front and rear sides of the test housing 1; two support branches are respectively installed on the two support slots 13 to support the test housing 1; the two support slots 13 are respectively used to accommodate the two support branches.

[0020] The controller uses the acquisition connector 6 to connect to the trigger circuit of the fire extinguisher bottle. The controller acquires the voltage data of the trigger circuit via the voltage acquisition circuit and displays the voltage data directly on the display screen 2, enabling direct detection of the fire extinguisher bottle trigger circuit without the need for an external voltmeter. The support structure and test housing 1 form a relatively simple structure, resulting in a small size and high portability. The support structure can switch between a supporting state and a storage state depending on the location of the trigger circuit and the size of the surrounding space, further improving portability. The dust plug 7 provides some dust protection for the acquisition connector 6. Under the control of the controller, a buzzer and indicator light 3 emit sound or light signals. For example, after a preset voltage value is obtained, if the voltage value of the fire extinguisher bottle trigger circuit acquired by the voltage acquisition circuit is not the preset value, the controller controls the buzzer to emit a warning sound and controls the indicator light 3 to flash.

[0021] Furthermore, the support branch includes a limiting unit, a support tube 14, a telescopic rod 16, and a support rod 18; the upper end of the support tube 14 is oscillatingly mounted on the vertical groove wall of the support slot 13, and the support tube 14 is housed within the support slot 13; the limiting unit is mounted on the lower side of the test housing 1 for oscillating positioning of the support tube 14; a sliding groove 19 is vertically provided inside the support tube 14; the upper end of the telescopic rod 16 is inserted into the lower end of the support tube 14; a telescopic slider 15 is provided on the upper end of the telescopic rod 16, and the telescopic slider 15 is vertically slidably latched onto the sliding groove 19; The lower opening of the support tube 14 is threaded with a telescopic locking bolt 24, the end of which is used to press tightly against the telescopic rod 16; a swing groove 17 extending to the left and right sides is provided laterally on the lower side of the telescopic rod 16; a swing shaft is longitudinally fixed through the left end of the support rod 18; the two ends of the swing shaft are respectively rotatably installed on the lower ends of the front and rear sides of the swing groove 17; the support rod 18 is used to be housed in the swing groove 17; a pressing bolt 23 is threadedly installed on the left end face of the support rod 18; the bolt head of the pressing bolt 23 is used to press against the left side face of the telescopic rod 16.

[0022] In the supported state, the support tube 14 extends out of the support slot 13 and is positioned by the limiting unit. The telescopic rod 16 extends out of the support tube 14 and is positioned by the telescopic locking bolt 24. The support rod 18 extends out of the swing slot 17, and the pressing bolt 23 presses tightly against the left side of the telescopic rod 16, thus supporting the test housing 1. In the retracted state, the support tube 14 is inserted into the support slot 13 and positioned by the limiting unit. The telescopic rod 16 is retracted as much as possible into the support tube 14 and positioned by the telescopic locking bolt 24. The support rod 18 is inserted into the swing slot 17, and the pressing bolt 23 presses tightly against the end of the telescopic rod 16, thus retracting the support and making the structure of the support branch compact.

[0023] Furthermore, the limiting unit includes a limiting seat 20 and a limiting slider 21; the limiting seat 20 is fixed on the lower side of the test housing 1; one end of the limiting slider 21 is telescopically slidably installed in the limiting seat 20, and the other end extends out of the limiting seat 20; a limiting spring is installed in the limiting seat 20 to drive the extended end of the limiting slider 21 to move below the corresponding support slot 13; the support tube 14 is used to support the extended side of the limiting slider 21; an elongated hole is provided on one side wall of the limiting seat 20 along the sliding direction of the limiting slider 21; and a toggle rod 22 extending out of the elongated hole is fixed on the limiting slider 21.

[0024] When the support tube 14 is in the supported state, the right side of the support tube 14 presses against the limiting slider 21, and the left side is close to the left side wall of the support slot 13, ensuring that the support tube 14 is vertically supported. When the support tube 14 is in the retracted state, the protruding side of the limiting slider 21 supports the support tube 14 below, preventing the support tube 14 from swinging out of the support slot 13, thus limiting the support tube 14. The lever 22 can drive the limiting slider 21 to retract into the limiting seat 20, thereby releasing the limitation on the support tube 14 and facilitating the change of the support tube 14's state.

[0025] Furthermore, a storage slot 8 extending to the right side is provided on the upper side of the test housing 1; an elastic buckle 9 for holding a marker is provided on the bottom of the storage slot 8; a shorthand board 12 is provided on the bottom of the storage slot 8; guide grooves are provided laterally on the upper edges of the front and rear side walls of the storage slot 8; guide sliders are slidably provided on both guide grooves; baffles 10 for covering the storage slot 8 are connected and fixed to the two guide sliders; and a toggle protrusion 11 is provided on the right edge of the baffle.

[0026] The elastic buckle 9 in the storage slot 8 is used to hold the marker, which is convenient for temporary note-taking on the shorthand board 12, and can also be used to store items; the lever 11 is used to open and close the baffle 10.

[0027] In the test box for triggering circuits of fire extinguishing bottles in aircraft cargo holds provided by this utility model, the controller adopts an existing single-chip microcomputer control module; the display screen 2 adopts an existing display screen; the buzzer adopts an existing buzzer; and the indicator light 3 adopts an existing indicator light.

[0028] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and detail may be made to the present invention without departing from the spirit and scope of the appended claims.

Claims

1. A test box for triggering circuits of fire extinguishing bottles in aircraft cargo holds, characterized in that: It includes a test housing (1), a support mechanism, a controller, and a data acquisition connector (6); the support mechanism includes two support branches; The controller is installed inside the test housing (1); a buzzer, a display screen (2) and an indicator light (3) connected to the controller are installed on the test housing (1); the acquisition connector (6) is installed on the test housing (1) and is connected to the controller through a voltage acquisition circuit; a dust plug (7) for snapping onto the acquisition connector (6) is fixed on the test housing (1) by a pull rope; two support slots (13) are provided on the test housing (1); two support branches are installed on the two support slots (13) respectively to support the test housing (1); the two support slots (13) are used to accommodate the two support branches respectively.

2. The test box for triggering circuits of fire extinguishing bottles in aircraft cargo holds according to claim 1, characterized in that: The support branch includes a limiting unit, a support tube (14), a telescopic rod (16), and a support rod (18); one end of the support tube (14) is sway-mounted on the support slot (13) and is used to house the support slot (13); the limiting unit is mounted on the lower side of the test housing (1) and is used to swing and position the support tube (14); one end of the telescopic rod (16) is telescopically adjustable and mounted on the other end of the support tube (14); a swing slot (17) is provided on the other end of the telescopic rod (16); one end of the support rod (18) is rotatably adjustable and mounted on the lower end of the swing slot (17) and is used to support the ground; the swing slot (17) is used to house the support rod (18).

3. The test box for triggering circuits of fire extinguishing bottles in aircraft cargo holds according to claim 2, characterized in that: The limiting unit includes a limiting seat (20) and a limiting slider (21); the limiting seat (20) is installed on the lower side of the test housing (1); the limiting slider (21) is telescopically slidably installed on the limiting seat (20); a limiting spring for driving the limiting slider (21) to extend is installed in the limiting seat (20); and a support tube (14) is used to support the extended side of the limiting slider (21).

4. The test box for triggering circuits of fire extinguishing bottles in aircraft cargo holds according to claim 1, characterized in that: A storage slot (8) is provided on the upper side of the test housing (1); a shorthand board (12) and an elastic buckle (9) for holding the marker are provided on the bottom of the storage slot (8); a baffle (10) for covering the storage slot (8) is slidably installed on the storage slot (8).

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