Auxiliary tool for insulation detection of aircraft wire harness

Abstract

The utility model discloses an auxiliary tool for airplane wire harness insulation detection in the technical field of insulation detection, which comprises a megohmmeter with a hand crank, a voltage generator is arranged in the megohmmeter, the hand crank comprises a hand crank end and a connecting end, the connecting end of the hand crank is connected with a power input end of the voltage generator, and the connecting end of the hand crank is connected with a power output end of the voltage generator. The megohmmeter and the direct current motor are both arranged on the base, the first end of the connecting piece is detachably connected with the crank handle, and the second end of the connecting piece is connected with an output shaft of the direct current motor. According to the utility model, the technical problems that the rotating speed is unstable, the stable rotating speed output cannot be provided for a long time and the operation difficulty is high when the handle is manually rocked are solved, the operation difficulty is reduced, the rotating speed output is more stable, the original manual rocking handle structure is retained, and the dual purposes of manual and electric modes are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of insulation detection, in particular to an auxiliary tool for aircraft wire harness insulation detection. Background Art

[0002] In the domestic military and civilian aircraft electrical system assembly, it mainly includes wire harness laying, terminal connectors, insulation continuity testing, etc. The insulation resistance can reflect the insulation relationship between independent circuits, and whether the value is qualified directly affects the reliability of the equipment control system. Therefore, testing the insulation resistance of cables can effectively prevent accidents.

[0003] Existing insulation detection equipment usually uses a megohmmeter for detection. The megohmmeter is internally provided with a voltage generator, and the power input end of the voltage generator is connected with a handle. By manually turning the handle, the voltage generator provides 500 volts of high voltage for the megohmmeter to meet the working output of the megohmmeter. However, when manually turning the handle, the rotation speed is often unstable, and a stable rotation speed output cannot be provided for a long time. The measurement result is easily affected by human factors. In addition, the wire harness insulation test involves some narrow working areas, making it difficult to provide working space for dedicated megohmmeter operators. Summary of the Utility Model

[0004] In order to solve the technical problems of the existing device that the rotation speed is unstable when manually turning the handle, a stable rotation speed output cannot be provided for a long time, and the operation difficulty is relatively large, the utility model provides an auxiliary tool for aircraft wire harness insulation detection that can provide a stable rotation speed output, reduce the operation difficulty, and at the same time retain the original manual crank structure to realize the dual use of manual and electric modes.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] An auxiliary tool for aircraft wire harness insulation detection includes a megohmmeter with a hand crank. The megohmmeter is internally provided with a voltage generator. The hand crank includes a hand-cranked end and a connecting end. The connecting end of the hand crank is connected to the power input end of the voltage generator. It further includes a base, a DC motor, and a connecting member. The megohmmeter and the DC motor are both arranged on the base. The first end of the connecting member is detachably connected to the hand crank, and the second end of the connecting member is connected to the output shaft of the DC motor.

[0007] Further, the connecting member is a straight rod. The first end of the connecting member has a card slot, and the depth direction of the card slot is consistent with the length direction of the connecting member. The card slot is detachably clamped with the connecting end of the hand crank. The second end of the connecting member has a special-shaped hole, and the shape of the special-shaped hole is adapted to the shape of the output shaft of the DC motor. The special-shaped hole is in clearance fit with the output shaft of the DC motor.

[0008] Further, the special-shaped hole includes a partial circular contour and a plane, and the two enclose to form the special-shaped hole.

[0009] Furthermore, a manual switch is provided on the base, and the manual switch is electrically connected to the DC motor.

[0010] Furthermore, anti-slip pads are provided at the bottom of the base.

[0011] Furthermore, the DC motor is equipped with a speed regulating device.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. By integrating the megohmmeter and the DC motor on a base and connecting the hand crank and the motor output shaft through a connecting piece, the motor is used to replace manual cranking of the handle to drive the megohmmeter. This can ensure a stable rotation speed of the megohmmeter during detection, avoid instability and fatigue problems in manual operation, and improve the accuracy and consistency of the detection results. In addition, the connecting piece is detachably connected to the hand crank, retaining the original structure of the megohmmeter. When the electric system fails, the manual mechanical mode can be used as a backup measure.

[0014] 2. The connecting piece is designed with a card slot at one end and a special-shaped hole matching the output shaft of the DC motor at the other end. This design enables the hand crank to be installed and disassembled conveniently and quickly. At the same time, the card slot is detachably clamped with the hand crank, retaining the original structure of the megohmmeter. The clearance fit between the special-shaped hole and the output shaft of the DC motor can ensure more stable and reliable power transmission between the output shaft of the DC motor and the hand crank, reducing speed fluctuations caused by poor connection.

[0015] 3. The formation of the special-shaped hole by enclosing a part of the circular contour and a plane ensures the precise alignment of the connecting piece with the output shaft of the DC motor. The circular part provides central positioning, while the plane part restricts rotation. The presence of the plane part enables the connecting piece to be quickly installed and disassembled through simple insertion or extraction actions. Compared with other holes with complex shapes, this design simplifies the operation steps and improves work efficiency.

[0016] 4. The setting of the manual switch enables the operator to conveniently start or stop the DC motor without frequent plugging and unplugging of the power supply or touching electrical components, which not only improves the convenience of use but also increases safety.

[0017] 5. The anti-slip pads provided at the bottom of the base can prevent the detection tool from moving due to motor vibration during use. Especially when operating in a narrow space, maintaining the stability of the equipment is crucial for safe and accurate measurement.

[0018] 6. The speed regulating device equipped on the DC motor allows users to adjust the rotation speed of the DC motor according to different detection requirements, thereby better controlling the output characteristics of the megohmmeter. This is very useful for adapting to different types of wire harnesses and detection standards, and also enhances the flexibility and applicability of the tool.

[0019] In summary, these improvement measures not only solve the deficiencies in traditional manual megohmmeter detection, but also greatly improve the detection efficiency and accuracy, reduce the labor intensity of the operator, and make the detection process safer and more reliable. Brief Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the auxiliary tool for aircraft wire harness insulation detection of the present utility model;

[0021] Figure 2 is a front view of the auxiliary tool for aircraft wire harness insulation detection of the present utility model;

[0022] Figure 3 is a schematic structural diagram of the connecting piece;

[0023] Figure 4 is a left view of the connecting piece;

[0024] In the figure, the markings are: 1 - megohmmeter, 11 - hand crank, 2 - base, 3 - DC motor, 4 - connecting piece, 41 - card slot, 42 - special-shaped hole, 421 - partial circular contour, 422 - plane, 5 - manual switch. Detailed Description of the Preferred Embodiment

[0025] To make the objectives, technical solutions and advantages of the embodiments of the present application more clearly expressed, the present utility model will be further described below with reference to the accompanying drawings.

[0026] First, it should be stated that the clear and complete description of the technical solutions of the embodiments of the present application is for the embodiments that are part of the present application, rather than a limitation on the present utility model. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "first", "second", "upper", "lower", "left", "right", "inner", "outer", "axial" or "radial" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation structure and operation. Therefore, it should not be construed as a limitation on the present utility model.

[0028] It should be noted that in the present utility model, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0029] Referring to Figures 1 to 4 , the present utility model provides an auxiliary tool for aircraft wire harness insulation detection.

[0030] As Figure 1 and Figure 2 shown, in some embodiments, the auxiliary tool for aircraft wire harness insulation detection includes a megohmmeter 1 with a hand crank 11. The megohmmeter 1 is internally provided with a voltage generator. The hand crank 11 includes a hand-cranked end and a connection end. The connection end of the hand crank 11 is connected to the power input end of the voltage generator. It further includes a base 2, a DC motor 3, and a connector 4. The megohmmeter 1 and the DC motor 3 are both arranged on the base 2. The first end of the connector 4 is detachably connected to the hand crank 11, and the second end of the connector 4 is connected to the output shaft of the DC motor 3.

[0031] The connection position between the connector 4 and the hand crank 11 is not limited here. When the connector 4 is a straight rod, the connection end of the connector 4 is detachably connected to the hand crank 11; when the connector 4 is detachably connected to other positions of the hand crank 11, the connector 4 is a curved rod to ensure that the hand crank 11 rotates under the drive of the DC motor 3.

[0032] The connection method between the connector 4 and the output shaft of the DC motor 3 here can be a fixed connection, such as welding, or a detachable connection, such as the cooperation of a special-shaped hole and a special-shaped shaft, or key grooves are provided on both the connector 4 and the output shaft, and are installed in the key grooves of the connector 4 and the output shaft through a flat key or a semi-circular key to provide fixation, or fixation is achieved through the cooperation of a pin hole and a pin.

[0033] The first end of the connector 4 is detachably connected to the hand crank 11. It can be that a clamping groove 41 is provided on the connector 4 to be clamped with the hand crank 11, or it can be a snap connection, a pin connection, or an external fixture is used to fix the two. The specific form of the detachable connection is not particularly limited here.

[0034] As Figure 1 , Figure 3 and Figure 4As shown, in some embodiments, the connecting member 4 is a straight rod. The first end of the connecting member 4 has a card slot 41, and the depth direction of the card slot 41 is consistent with the length direction of the connecting member 4. The connecting end of the card slot 41 and the hand crank 11 is detachably clamped. The second end of the connecting member 4 has a special-shaped hole 42, and the shape of the special-shaped hole 42 is adapted to the output shaft of the DC motor 3, and the special-shaped hole 42 and the output shaft of the DC motor 3 are in clearance fit.

[0035] For the special-shaped hole 42, in this application, it is defined as a non-circular hole. It can be formed by enclosing a part of a circular contour 421 and a plane 422 to form the special-shaped hole 42, or it can be a square hole, a star-shaped hole, a hexagonal hole, etc. There is no special limitation here, as long as the power transmission between the output shaft of the DC motor 3 and the connecting member 4 can be achieved.

[0036] The card slot 4l at the first end of the connecting member 4 is sleeved on the hand crank 11. Since both the megohmmeter 1 and the DC motor 3 are fixedly arranged on the base 2, the relative positions of the megohmmeter 1 and the DC motor 3 are ensured to be fixed, so that the connecting member 4 will not be separated from the hand crank 11 when driven by the DC motor 3, realizing both detachable clamping and ensuring accurate and stable transmission.

[0037] With the setting of the special-shaped hole 42, the output shaft of the DC motor 3 is also correspondingly provided with a special-shaped shaft adapted to the special-shaped hole 42, which can ensure that the power transmission between the output shaft of the DC motor 3 and the hand crank 11 is more stable and reliable, reducing the speed fluctuation caused by poor connection, and avoiding relative rotation between the connecting member 4 and the output shaft of the DC motor 3.

[0038] As Figure 4 shown, in some embodiments, the special-shaped hole 42 includes a part of a circular contour 421 and a plane 422, and the two enclose to form the special-shaped hole 42. The part of the circular contour 421 of the special-shaped hole 42 provides central positioning, while the plane 422 part restricts rotation. The existence of the plane 422 part enables the connecting member 4 to be quickly installed and disassembled through simple insertion or extraction actions. Compared with other holes with complex shapes, this design simplifies the operation steps and improves work efficiency.

[0039] As Figure 1 shown, in some embodiments, a manual switch 5 is arranged on the base 2, and the manual switch 5 is electrically connected to the DC motor 3. The setting of the manual switch 5 enables the operator to conveniently start or stop the DC motor 3 without frequently plugging and unplugging the power supply and touching electrical components, improving both the convenience of use and safety.

[0040] In some embodiments, a non-slip pad is arranged at the bottom of the base 2. The non-slip pad is made of silica gel, rubber or other synthetic materials with anti-slip properties.

[0041] In some embodiments, the DC motor 3 is equipped with a speed regulating device. The speed regulating device equipped on the DC motor 3 allows the user to adjust the rotational speed of the DC motor 3 according to different detection requirements, thereby better controlling the output characteristics of the megohmmeter 1. This is very useful for adapting to different types of wire harnesses and detection standards, and also enhances the flexibility and applicability of the tool.

Claims

1. An auxiliary tool for aircraft wiring harness insulation detection, comprising a megohmmeter (1) with a hand crank (11), the megohmmeter (1) is built-in with a voltage generator, the hand crank (11) includes a hand-cranking end and a connecting end, and the connecting end of the hand crank (11) is connected to the power input end of the voltage generator, characterized in that: It further includes a base (2), a DC motor (3) and a connecting member (4). The megohmmeter (1) and the DC motor (3) are both arranged on the base (2). The first end of the connecting member (4) is detachably connected to the hand crank (11), and the second end of the connecting member (4) is connected to the output shaft of the DC motor (3).

2. The auxiliary tool for aircraft wire harness insulation detection according to claim 1, characterized in that: The connecting member (4) is a straight rod. The first end of the connecting member (4) has a card slot (41). The depth direction of the card slot (41) is consistent with the length direction of the connecting member (4). The connecting end of the card slot (41) and the hand crank (11) are detachably clamped. The second end of the connecting member (4) has a special-shaped hole (42). The special-shaped hole (42) is adapted to the shape of the output shaft of the DC motor (3), and the special-shaped hole (42) is in clearance fit with the output shaft of the DC motor (3).

3. The auxiliary tool for aircraft wiring harness insulation detection according to claim 2, characterized in that: The special-shaped hole (42) includes a partial circular contour (421) and a plane (422), and the two enclose to form the special-shaped hole (42).

4. The auxiliary tool for aircraft wire harness insulation detection according to claim 1, characterized in that: A manual switch (5) is arranged on the base (2), and the manual switch (5) is electrically connected to the DC motor (3).

5. The auxiliary tool for aircraft wiring harness insulation detection according to claim 1, characterized in that: Anti-slip pads are arranged at the bottom of the base (2).

6. The auxiliary tool for aircraft wiring harness insulation detection according to any one of claims 1-5, characterized in that: The DC motor (3) is equipped with a speed regulating device.

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