Wire harness measuring device

Abstract

The invention belongs to the technical field of measurement, and discloses a wire harness measuring device which is used for measuring the diameter and perimeter of an aircraft wire harness and comprises a rack, a wire belt, a rotating shaft assembly, a display screen and a measuring mechanism. A wire belt passing hole is formed in the rack; the rotating shaft assembly is rotationally connected with the rack, one end of the wire belt is connected with the rotating shaft assembly, the other end of the wire belt extends out of the rack through the wire belt passing hole, and the rotating shaft assembly can be driven to rotate when one end of the wire belt moves out of the wire belt passing hole; the display screen is connected with the rack; the measuring mechanism comprises a measuring assembly and a photoelectric coded disc, the photoelectric coded disc is connected with the rotating shaft assembly, the measuring assembly is connected with the rack and electrically connected with the display screen, the measuring assembly can measure the rotating angle of the photoelectric coded disc along with the rotating shaft assembly, the diameter and the perimeter of the measured wire harness are calculated, and the matched hoop model is displayed on the display screen. An operator can directly obtain a matched hoop model by simply winding a wire harness on a wire belt, so that the construction efficiency is improved, and the speed increase of batch production is facilitated.

Description

Technical Field

[0001] The invention relates to the field of measurement technology, and in particular to a wire harness measuring device. Background Art

[0002] With the development of technology, domestic aircraft have begun to take on more and more navigation missions. In the manufacture of aircraft, various electronic equipment need to be connected by a large number of wire harnesses, so the laying of wire harnesses is a huge project.

[0003] There are more than 18,000 clamps in the C919 aircraft. Nearly 4,000 clamps were replaced during the final assembly of the 00007 aircraft. Clamp problems account for 25% of the on-site problems, and subsequent flights require iterative optimization. Usually, workers need to estimate the appropriate clamps before replacing the clamps on the aircraft, and then try to install them with the estimated clamps. If they are suitable, the results will be fed back to the design changes. If they are not suitable, other specifications of clamps will be replaced for trial installation. If the workers do not have suitable clamps, they need to obtain the clamps from other sources. This process is very likely to cause parts to be lost or left over, increasing manufacturing costs. At present, there is no unified clamp judgment standard. Each operator can only judge whether the clamp meets the process specification requirements based on subjective judgment. The specifications of the clamps used in each flight are not uniform, which is not conducive to speeding up batch production and slowing down construction efficiency. Summary of the invention

[0004] The object of the present invention is to provide a wire harness measuring device to solve the technical problem that the existing clamps require operators to judge whether the clamps meet the process specifications only based on subjective judgment, which easily causes the loss or surplus of parts and slows down the construction efficiency.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] Harness measuring device, used to measure the diameter and circumference of aircraft harnesses, including:

[0007] The rack is provided with a wire belt passing hole;

[0008] Line tape;

[0009] A shaft assembly is rotatably connected to the frame, one end of the line belt is connected to the shaft assembly, and the other end of the line belt extends out of the frame through the line belt through hole, and when the line belt moves out of the line belt through hole, the shaft assembly can be driven to rotate;

[0010] A display screen connected to the frame;

[0011] The measuring mechanism includes a measuring component and a photoelectric encoder disk, wherein the photoelectric encoder disk is connected to the rotating shaft component, the measuring component is connected to the frame and electrically connected to the display screen, and the measuring component can measure the angle of rotation of the photoelectric encoder disk with the rotating shaft component to calculate the diameter and circumference of the measured wiring harness, and display the corresponding clamp model on the display screen.

[0012] Preferably, the rotating shaft assembly includes a rotating shaft and a hub, the hub is sleeved on the circumference of the rotating shaft, one end of the wire belt is connected to the hub, the frame includes a first through hole, the rotating shaft is rotatably connected to the hole wall of the first through hole, and one end of the rotating shaft extends out of the frame through the first through hole.

[0013] Preferably, the rotating shaft assembly further comprises a manual rotating wheel, which is arranged at one end of the rotating shaft extending out of the frame, and the manual rotating wheel can drive the rotating shaft to rotate.

[0014] Preferably, the rotating shaft assembly further comprises a bearing, an inner ring of the bearing is connected to the rotating shaft, and an outer ring of the bearing is connected to the hole wall of the first through hole.

[0015] Preferably, the hub comprises a wire gathering part and two limiting parts, the wire gathering part is sleeved on the circumference of the rotating shaft, the wire belt is connected to the wire gathering part, and the two limiting parts are respectively arranged on both sides of the wire gathering part.

[0016] Preferably, the measuring component includes a code reader and a circuit board, the code reader and the circuit board are both connected to the frame, the code reader is electrically connected to the circuit board, and the circuit board is electrically connected to the display screen, the code reader is configured to measure the rotation angle of the photoelectric code disk, and the circuit board is configured to calculate the diameter and circumference of the measured wiring harness through the angle data measured by the code reader, and display the corresponding clamp model on the display screen.

[0017] Preferably, the photoelectric code disk is provided with a plurality of grating holes, the code reader is provided with a groove, the photoelectric code disk extends into the groove, a light source is provided on the groove wall on one side of the groove, and a photosensitive element is provided on the groove wall on the other side of the groove, and when the light source passes through the grating hole and illuminates the photosensitive element, the photosensitive element will emit a pulse electrical signal.

[0018] Preferably, the plurality of grating holes are evenly spaced around the axis of the photoelectric encoder disk.

[0019] Preferably, the circuit board is an ESP32 development board.

[0020] Preferably, a power supply is further included, and the power supply is configured to be able to supply power to the measuring component and the display screen.

[0021] Beneficial effects: The present invention provides a wire harness measuring device for measuring the diameter or circumference of a wire harness to match the corresponding wire harness clamp. When measuring the diameter or circumference of a wire harness, the operator pulls out the wire tape from the wire tape through hole, and wraps it around the wire harness fixed by the required clamp. The pulled out wire tape drives the shaft assembly to rotate, and the measuring assembly can measure the angle at which the photoelectric encoder rotates with the shaft assembly to calculate the distance the wire tape moves. Since the distance the wire tape moves is equal to the circumference of the wire harness, the diameter and circumference of the measured wire harness are calculated by mathematical formulas, and the matching clamp model is matched through the built-in database and displayed on the display screen. The operator can directly obtain the matching clamp model by simply wrapping the wire tape around the wire harness, avoiding the operator's repeated attempts to determine the clamp model, avoiding the problem of carrying incomplete clamps, reducing the difficulty of work, reducing the loss or surplus of parts, speeding up the determination of the clamp model, and improving the construction efficiency, which is greatly beneficial to the speed-up of mass production in manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure of the wire harness measuring device provided by the embodiment of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 2 The structure of the wire harness measuring device provided by the embodiment of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 3 is a side view of a wire harness measuring device provided by an embodiment of the present invention;

[0025] Figure 4 yes Figure 3 Cross-sectional view at AA in the middle.

[0026] In the figure:

[0027] 1. Frame; 11. Wire belt through hole; 12. First through hole;

[0028] 2. Line tape;

[0029] 3. Rotating shaft assembly; 31. Rotating shaft; 32. Hub; 321. Cable collection part; 322. Position limiting part; 33. Manual rotating wheel; 34. Bearing;

[0030] 4. Display screen;

[0031] 5. Measuring mechanism; 51. Photoelectric code disk; 52. Measuring component; 521. Code reader; 5211. Groove; 522. Circuit board;

[0032] 6. Power supply. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0037] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0038] There are more than 18,000 clamps in the C919 aircraft. Nearly 4,000 clamps were replaced during the final assembly of the 00007 aircraft. Clamp problems account for 25% of the on-site problems, and subsequent flights require iterative optimization. Usually, workers need to estimate the appropriate clamps before replacing the clamps on the aircraft, and then try to install them with the estimated clamps. If they are suitable, the results will be fed back to the design changes. If they are not suitable, other specifications of clamps will be replaced for trial installation. If the workers do not have suitable clamps, they need to obtain the clamps from other sources. This process is very likely to cause parts to be lost or left over, increasing manufacturing costs. At present, there is no unified clamp judgment standard. Each operator can only judge whether the clamp meets the process specification requirements based on subjective judgment. The specifications of the clamps used in each flight are not uniform, which is not conducive to speeding up batch production and slowing down construction efficiency.

[0039] refer to Figure 1-Figure 4 The present invention provides a harness measuring device for measuring the diameter and circumference of an aircraft harness. The harness measuring device comprises a frame 1, a harness tape 2, a shaft assembly 3, a display screen 4 and a measuring assembly 52. ​​By winding the harness to be measured with the harness tape 2, the measuring assembly 52 can measure the angle at which the shaft assembly 3 is rotated by the harness tape 2, calculate the diameter and circumference of the harness to be measured, and display the matching clamp on the display screen 4, which greatly reduces the difficulty of the operator's work and improves the work efficiency.

[0040] The frame 1 is provided with a wire belt passing hole 11; the rotating shaft assembly 3 is rotatably connected to the frame 1, one end of the wire belt 2 is connected to the rotating shaft assembly 3, and the other end extends out of the frame 1 through the wire belt passing hole 11, and when one end of the wire belt 2 moves out of the wire belt passing hole 11, it can drive the rotating shaft assembly 3 to rotate; the display screen 4 is connected to the frame 1; the measuring mechanism 5 includes a measuring component 52 and a photoelectric encoder 51, the photoelectric encoder 51 is connected to the rotating shaft assembly 3, the measuring component 52 is connected to the frame 1 and is electrically connected to the display screen 4, and the measuring component 52 can measure the angle of rotation of the photoelectric encoder 51 with the rotating shaft assembly 3 to calculate the diameter and circumference of the measured wiring harness, and display the corresponding clamp model on the display screen 4.

[0041] When measuring the diameter or circumference of the wire harness, the operator pulls out the wire tape 2 from the wire tape through hole 11, and wraps around the wire harness fixed by the required clamp. The pulled out wire tape 2 drives the shaft assembly 3 to rotate, and the measuring assembly 52 can measure the angle at which the photoelectric encoder 51 rotates with the shaft assembly 3 to calculate the distance the wire tape 2 moves. Since the distance the wire tape 2 moves is equal to the circumference of the wire harness, the diameter and circumference of the measured wire harness are calculated by mathematical formulas, and the matching clamp model is matched through the built-in database and displayed on the display screen 4. The operator can directly obtain the matching clamp model by simply wrapping the wire tape 2 around the wire harness, avoiding the operator's repeated attempts to determine the clamp model, avoiding the problem of carrying incomplete clamps, reducing the difficulty of work, reducing the loss or surplus of parts, speeding up the determination of the clamp model, improving the construction efficiency, and greatly facilitating the batch production speed-up of manufacturing production.

[0042] There is no restriction on the specific model of the circuit board 522. In the present embodiment, the circuit board 522 is an ESP32 development board, which is low-cost and comprehensive in functions. While quickly calculating the size, it can store a large amount of clamp model information, and then match the harness size with the clamp to obtain a suitable clamp model, which is displayed on the display screen 4, so that the operator can quickly and accurately obtain the clamp model.

[0043] The wire harness measuring device also includes a power supply 6, which is configured to supply power to the measuring component 52 and the display screen 4, so that the operator can carry the wire harness measuring device to perform operations at any location, avoiding the need to connect wires and reducing the difficulty of work.

[0044] Specifically, the shaft assembly 3 includes a rotating shaft 31 and a hub 32. The hub 32 is sleeved on the side of the rotating shaft 31. One end of the cable belt 2 is connected to the hub 32. The hub 32 can better store the cable belt 2 to avoid the cable belt 2 from getting tangled or getting stuck when the cable belt 2 is pulled out. The frame 1 includes a first through hole 12. The rotating shaft 31 is rotatably connected to the hole wall of the first through hole 12, and one end of the rotating shaft 31 extends out of the frame 1 through the first through hole 12. When the measurement is completed, the cable belt 2 can be retracted into the hub 32 by rotating the rotating shaft.

[0045] Furthermore, the shaft assembly 3 also includes a manual wheel 33, which is arranged at one end of the rotating shaft 31 extending out of the frame 1. The manual wheel 33 can drive the rotating shaft 31 to rotate, making it convenient for the operator to quickly recycle the wire tape 2.

[0046] Furthermore, the shaft assembly 3 also includes a bearing 34, the inner ring of the bearing 34 is connected to the rotating shaft 31, and the outer ring of the bearing 34 is connected to the hole wall of the first through hole 12, so that the rotation of the rotating shaft 31 is smoother, avoiding jamming during the extraction or recovery of the wire tape 2.

[0047] Specifically, the hub 32 includes a wire collecting portion 321 and two limiting portions 322. The wire collecting portion 321 is sleeved on the circumference of the rotating shaft 31, the wire belt 2 is connected to the wire collecting portion 321, and the two limiting portions 322 are respectively arranged on both sides of the wire collecting portion 321. The two limiting portions 322 can limit the wire belt 2 to remain on the circumference of the wire collecting portion 321 to prevent the wire belt 2 from escaping from the range of the wire collecting portion 321.

[0048] The measuring component 52 includes a code reader 521 and a circuit board 522, both of which are connected to the frame 1, the code reader 521 is electrically connected to the circuit board 522, and the circuit board 522 is electrically connected to the display screen 4, the code reader 521 is configured to measure the rotation angle of the photoelectric code disk 51, and the circuit board 522 is configured to calculate the diameter and circumference of the measured wiring harness through the angle data measured by the code reader 521, and display the corresponding clamp model on the display screen 4, so that the operator can quickly determine the corresponding clamp through the display screen 4.

[0049] Specifically, the photoelectric code disk 51 is provided with a plurality of grating holes, the code reader 521 is provided with a groove 5211, the photoelectric code disk 51 extends into the groove 5211, a light source is provided on the groove wall on one side of the groove 5211, and a photosensitive element is provided on the groove wall on the other side of the groove 5211. When the light source passes through the grating hole and illuminates the photosensitive element, the photosensitive element will emit a pulse electrical signal, and the corresponding rotation angle of the photoelectric code disk 51 is obtained according to the pulse signal.

[0050] Specifically, a plurality of grating holes are evenly spaced around the axis of the photoelectric encoder 51 , so that the rotation angle of the photoelectric encoder 51 can be accurately measured to avoid errors.

[0051] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A wire harness measuring device for measuring the diameter and circumference of an aircraft wire harness, characterized in that: include: The frame (1) is provided with a wire belt passing hole (11); Wire tape (2); A rotating shaft assembly (3) is rotatably connected to the frame (1); one end of the wire belt (2) is connected to the rotating shaft assembly (3), and the other end extends out of the frame (1) through the wire belt through hole (11); when one end of the wire belt (2) moves out of the wire belt through hole (11), the rotating shaft assembly (3) can be driven to rotate; A display screen (4) connected to the frame (1); The measuring mechanism (5) comprises a measuring component (52) and a photoelectric encoder (51), wherein the photoelectric encoder (51) is connected to the rotating shaft component (3), and the measuring component (52) is connected to the frame (1) and electrically connected to the display screen (4). The measuring component (52) is capable of measuring the angle at which the photoelectric encoder (51) rotates along with the rotating shaft component (3) to calculate the diameter and circumference of the measured wiring harness, and displaying a corresponding clamp model on the display screen (4).

2. The wire harness measuring device according to claim 1, characterized in that: The rotating shaft assembly (3) comprises a rotating shaft (31) and a hub (32), wherein the hub (32) is sleeved around the rotating shaft (31), one end of the line belt (2) is connected to the hub (32), and the frame (1) comprises a first through hole (12), the rotating shaft (31) is rotatably connected to the hole wall of the first through hole (12), and one end of the rotating shaft (31) extends out of the frame (1) through the first through hole (12).

3. The wire harness measuring device according to claim 2, characterized in that: The rotating shaft assembly (3) further comprises a manual rotating wheel (33), wherein the manual rotating wheel (33) is arranged at one end of the rotating shaft (31) extending out of the frame (1), and the manual rotating wheel (33) can drive the rotating shaft (31) to rotate.

4. The wire harness measuring device according to claim 2, characterized in that: The rotating shaft assembly (3) further comprises a bearing (34), the inner ring of the bearing (34) being connected to the rotating shaft (31), and the outer ring of the bearing (34) being connected to the hole wall of the first through hole (12).

5. The wire harness measuring device according to claim 2, characterized in that: The hub (32) comprises a line hub portion (321) and two limit portions (322); the line hub portion (321) is sleeved around the rotating shaft (31); the line belt (2) is connected to the line hub portion (321); and the two limit portions (322) are respectively arranged on both sides of the line hub portion (321).

6. The wire harness measuring device according to claim 2, characterized in that: The measuring component (52) comprises a code reader (521) and a circuit board (522), wherein the code reader (521) and the circuit board (522) are both connected to the frame (1), the code reader (521) is electrically connected to the circuit board (522), and the circuit board (522) is electrically connected to the display screen (4), the code reader (521) is configured to measure the rotation angle of the photoelectric code disk (51), and the circuit board (522) is configured to calculate the diameter and circumference of the measured wire harness through the angle data measured by the code reader (521), and display the corresponding clamp model on the display screen (4).

7. The wire harness measuring device according to claim 6, characterized in that: The photoelectric code disk (51) is provided with a plurality of grating holes, the code reader (521) is provided with a groove (5211), the photoelectric code disk (51) extends into the groove (5211), a light source is provided on a groove wall on one side of the groove (5211), and a photosensitive element is provided on a groove wall on the other side of the groove (5211), and when the light source passes through the grating holes and irradiates the photosensitive element, the photosensitive element emits a pulse electrical signal.

8. The wire harness measuring device according to claim 7, characterized in that: The plurality of grating holes are evenly spaced around the axis of the photoelectric encoder (51).

9. The wire harness measuring device according to claim 6, characterized in that: The circuit board (522) is an ESP32 development board.

10. The wire harness measuring device according to any one of claims 1 to 9, characterized in that: It also includes a power source (6), which is configured to be able to power the measuring component (52) and the display screen (4).

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