Distribution pipe inner hole automatic detection device and use method thereof

Abstract

The invention provides a distribution pipe inner hole automatic detection device and a use method thereof.The distribution pipe inner hole automatic detection device comprises a bottom plate and an endoscope, the bottom plate is provided with a first sliding rail, a first support and a first positioning seat, the first sliding rail is provided with a first sliding block, the first sliding block is connected with a first fixing seat, and the first fixing seat is connected with an endoscope body of the endoscope; a mirror rod of the endoscope corresponds to an inner cavity of the distribution pipe, and a probe of the mirror rod detects the inner side wall of the inner cavity of the distribution pipe; the first support is located between the first fixing base and the first positioning base, a first groove used for fixing the first end of the distribution pipe is formed in the top of the first support, a first connecting block is arranged on the side face, facing the first support, of the first positioning base, the first connecting block is connected with a first positioning block, and a second groove used for fixing the second end of the distribution pipe is formed in the first positioning block. The problem of how to automatically detect the quality of the inner hole of the distribution pipe in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of dispensing pipe inner hole detection, and in particular to a dispensing pipe inner hole automatic detection device and a use method thereof. Background Art

[0002] With the development of automobile industry, in order to reduce emission and increase efficiency, the pressure of automobile engine fuel power system has been on an upward trend, and the current system pressure is 350bar to 500bar. This requires the development of fuel distribution pipes that need to withstand higher working pressures. In order to meet such requirements, forged rail fuel distribution pipes have been developed. The inner hole of this type of fuel distribution pipe is a deep hole drilled by a deep hole drill, and the inner hole of the distribution pipe is formed by a deep hole drill (for example, the inner diameter of the hole is φ12-14, and the depth is 200-350).

[0003] The deep hole of the distribution pipe is drilled to form an internal oil cavity, which will withstand the maximum working pressure of 350 bar. After the fuel is delivered to the distribution pipe by the oil pump, it is then delivered to each injector through the distribution pipe. It is a pipe component of the engine.

[0004] The quality of the inner hole of the distribution pipe (i.e. the oil cavity or also called the "distribution pipe cavity") must not have visible pits and fractures, which will directly affect the service life and quality of the distribution pipe. At the same time, there must be no visible burrs and impurities in the pipe, which will cause the risk of blockage during oil delivery and directly affect the quality of the entire engine. The oil cavity is relatively deep, and the processing quality of the processing hole cannot be observed and tested by conventional methods.

[0005] Therefore, how to automatically detect the quality of the inner hole of the distribution pipe becomes a technical problem that needs to be solved. Summary of the invention

[0006] The purpose of the present invention is to provide an automatic detection device for the inner hole of a distribution pipe and a method for using the same, mainly to solve the problem of how to automatically detect the quality of the inner hole of a distribution pipe in the above-mentioned prior art, and to provide an automatic detection device for the inner hole of a distribution pipe.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] An automatic detection device for the inner hole of a distribution pipe, characterized in that: the automatic detection device for the inner hole of the distribution pipe comprises a base plate and an endoscope, the base plate is provided with a first slide rail, a first bracket and a first positioning seat, the first slide rail is provided with a first slider, the first slider is connected to a first fixing seat, the first fixing seat is connected to a body of the endoscope, the endoscope rod corresponds to the inner cavity of the distribution pipe, and the probe of the rod detects the inner wall of the inner cavity of the distribution pipe;

[0009] The first bracket is located between the first fixing seat and the first positioning seat. A first groove for fixing the first end of the distribution pipe is provided on the top of the first bracket. A first connecting block is provided on a side of the first positioning seat facing the first bracket. The first connecting block is connected to the first positioning block. The first positioning block is provided with a second groove for fixing the second end of the distribution pipe.

[0010] Furthermore, the first connecting block is also connected to the second positioning block, the second positioning block is located below the first positioning block, the second positioning block is provided with a first hollow portion and a first positioning pin, the injector seat near the second end of the distribution pipe is embedded in the first hollow portion, and the first positioning pin is embedded in the fixed bracket near the second end of the distribution pipe.

[0011] Furthermore, a first guide block is provided on one side of the first bracket facing the first fixing seat, and a first guide hole for circumferentially limiting the mirror rod of the endoscope is provided in the first guide block.

[0012] Furthermore, a first protrusion for embedding into the inner cavity of the first end of the distribution pipe is provided on one side of the first limiting block facing the first bracket, and one end of the first guide hole opens in the middle of the first protrusion.

[0013] Furthermore, a first positioning plate is provided on the bottom plate, the first bracket is fixed to one end of the first positioning plate close to the first slide rail, a second slide rail is provided on one end of the first positioning plate away from the first slide rail, and the first positioning seat is connected to the second slide rail via a second slider;

[0014] The second slide rail and the first slide rail are on the same straight line or the second slide rail and the first slide rail are arranged in parallel.

[0015] Furthermore, an adjustment plate is provided on the bottom plate, and a plurality of adjustment holes are provided on the adjustment plate, and the adjustment holes cooperate with the third positioning pins to limit the position of the first positioning seat in the left and right directions;

[0016] The adjusting plate is arranged parallel to the second slide rail.

[0017] Furthermore, both ends of the bottom plate are connected to the handles through second connecting blocks respectively;

[0018] The top of the first fixing seat is detachably connected to a first fixing pressing block, and the first fixing pressing block fixes the body of the endoscope on the top of the first fixing seat.

[0019] Furthermore, one end of the endoscope body is connected to the endoscope rod, and the other end of the endoscope body is connected to the CCD sensor.

[0020] Furthermore, the shape of the first protrusion matches the shape of the inner cavity of the first end of the dispensing tube.

[0021] A method for using an automatic detection device for inner holes of a distribution pipe, using an automatic detection device for inner holes of a distribution pipe, the specific steps are as follows:

[0022] First, move the endoscope body to the rearmost side and place it at the origin position;

[0023] Secondly, the distribution pipe is positioned through the first guide block and the second positioning block and then placed in the first groove of the first bracket and the second groove of the first positioning block to position the distribution pipe;

[0024] Next, after placing the distribution pipe, slowly push the endoscope forward. After the endoscope rod carries the probe into the inner cavity of the distribution pipe, the image information inside the distribution pipe is transmitted to the CCD sensor. The CCD sensor automatically detects the surface state of the inner hole of the fuel distribution pipe through software, and automatically determines whether there are any quality defects in the inner hole of the distribution pipe. After the inner hole of the entire fuel distribution pipe is inspected;

[0025] Finally, the endoscope is removed backwards and the inspection is complete.

[0026] In view of the above technical features, the present invention has the following beneficial effects:

[0027] 1. An automatic detection device for the inner hole of a distribution pipe of the present invention moves an endoscope back and forth, and the endoscope rod moves back and forth with the probe in the inner hole of the distribution pipe to detect the inner hole of the distribution pipe, and automatically transmits the image information in the distribution pipe to the CCD sensor. The CCD sensor automatically analyzes the processing quality in the pipe through software, and automatically judges the quality in the distribution pipe, thereby realizing automatic detection of the inner hole of the distribution pipe, controlling the quality of deep hole drilling of the distribution pipe, and preventing defective parts from flowing into the next assembly process. Therefore, an automatic detection device for the inner hole of a distribution pipe of the present invention performs 100% inner hole quality detection after the hole of the distribution pipe is processed, which can effectively detect the quality of the inner hole of the distribution pipe, intercept the outflow of defective products, and improve the quality of the fuel distribution pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of an automatic detection device for the inner hole of a distribution pipe in specific embodiment 1 (stereoscopic perspective, the distribution pipe is not installed).

[0029] Figure 2 It is a schematic structural diagram of an automatic detection device for inner holes of a distribution pipe in specific embodiment 1 (front view angle, distribution pipe not installed).

[0030] Figure 3 It is a schematic structural diagram of an automatic detection device for inner holes of a distribution pipe in specific embodiment 1 (top view, distribution pipe not installed).

[0031] Figure 4 It is a structural schematic diagram of an automatic detection device for the inner hole of a distribution pipe in specific embodiment 1 (stereoscopic perspective, with the distribution pipe installed).

[0032] Figure 5 It is a schematic diagram of the structure of the distribution pipe in specific embodiment 1.

[0033] Figure 6 yes Figure 5 Middle AA section view.

[0034] In the figure: 1, bottom plate; 2, endoscope; 2-1, mirror body; 2-2, mirror rod; 2-3, probe; 3, first slide rail; 4, first slider; 5, first fixed seat; 5-1, first fixed pressure block; 6, first bracket; 6-1, first groove; 7, first positioning seat; 8, first connecting block; 9, first positioning block; 9-1, second groove; 10, second positioning block; 10-1, first hollow part; 10-2, first positioning pin; 11, first guide block; 11 -1, first guide hole; 11-2, first protrusion; 12, first positioning plate; 13, second slide rail; 14, second slider; 15, adjustment plate; 15-1, adjustment hole; 16, third positioning pin; 17, CCD sensor; 18, handle; 18-1, second connecting block; 19, distribution pipe; 19-1, inner cavity of distribution pipe; 19-2, first end of distribution pipe; 19-3, second end of distribution pipe; 19-4, injector seat; 19-5, fixing bracket. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0036] See also Figures 1 to 6, Specific embodiment 1, this embodiment 1 provides an automatic detection device for the inner hole of a distribution tube, including a base plate 1 and an endoscope 2, the base plate 1 is provided with a first slide rail 3, a first bracket 6 and a first positioning seat 7, the first slide rail 3 is provided with a first slider 4, the first slider 4 is connected to a first fixing seat 5, the first fixing seat 5 is connected to a mirror body 2-1 of the endoscope 2, and a mirror rod 2-2 of the endoscope 2 corresponds to an inner cavity 19-1 of the distribution tube; the mirror body 2-1 of the endoscope 2 is connected to a mirror rod 2-2 of the endoscope 2, and the mirror rod 2-2 is away from the mirror body 2- A probe 2-3 is provided at one end for detecting the inner surface of the inner cavity 19-1 of the distribution tube (whether it is flat, whether there are pits, etc.), and the first slider 4 drives the first fixing seat 5 to slide forward and backward along the first slide rail 3. The first fixing seat 5 drives the mirror body 2-1 and the mirror rod 2-2 of the endoscope 2 to move forward and backward synchronously, so that the probe 2-3 of the mirror rod 2-2 can move forward and backward inside the inner cavity 19-1 of the distribution tube, helping the probe 2-3 to detect every corner inside the inner cavity 19-1 of the distribution tube, ensuring the comprehensiveness of the detection. The top of the first fixing seat 5 is detachably connected to the first fixing block 5-1, and the first fixing block 5-1 fixes the mirror body 2-1 of the endoscope 2 on the top of the first fixing seat 5, so as to facilitate the replacement of the mirror body 2-1 of the endoscope 2.

[0037] The first bracket 6 is located between the first fixing seat 5 and the first positioning seat 7. The top of the first bracket 6 is provided with a first groove 6-1 for fixing the first end 19-2 of the distribution tube. The first positioning seat 7 is provided with a first connecting block 8 on the side facing the first bracket 6. The first connecting block 8 is connected to the first positioning block 9. The first positioning block 9 is provided with a second groove 9-1 for fixing the second end 19-3 of the distribution tube. The first end 19-2 of the distribution tube 19 is placed in the first groove 6-1, and the second end 19-3 of the distribution tube 19 is placed in the second groove 9-1, so that the mirror rod 2-2 can be extended into the inner cavity 19-1 of the distribution tube 19 and can move freely forward and backward in the inner cavity 19-1 of the distribution tube 19.

[0038] The first connecting block 8 is also connected to the second positioning block 10, and the second positioning block 10 is located below the first positioning block 9. The second positioning block 10 is provided with a first hollow portion 10-1 and a first positioning pin 10-2. The injector seat 19-4 near the second end 19-3 of the distribution pipe is embedded in the first hollow portion 10-1. The first hollow portion 10-1 is used to prevent the distribution pipe 19 from circumferential movement (i.e., to prevent the distribution pipe 19 from rotating). The first positioning pin 10-2 is embedded in the fixed bracket 19-5 near the second end 19-3 of the distribution pipe. The first positioning pin 10-2 is an error-proof design to prevent the two ends of the distribution pipe 19 from being reversed, and to ensure that the opening of the first end 19-2 of the distribution pipe connected to its inner cavity 19-1 corresponds to the direction of the endoscope 2, thereby improving the efficiency of the installation and fixation of the distribution pipe 19 before detection.

[0039] A first guide block 11 is provided on one side of the first bracket 6 facing the first fixing seat 5, and a first guide hole 11-1 is provided in the first guide block 11 for circumferentially limiting the mirror rod 2-2 of the endoscope 2. As long as the mirror rod 2-2 is inserted into the first guide hole 11-1, the mirror rod 2-2 can be accurately and efficiently inserted into the inner cavity 19-1 of the distribution tube. At the same time, during the forward and backward movement of the mirror rod 2-2, the first guide hole 11-1 also limits the range of the distance that the mirror rod 2-2 can be deviated around (i.e., up, down, left, and right), so as to prevent the mirror rod 2-2 from contacting the inner cavity 19-1 of the distribution tube, and to prevent friction from damaging the mirror rod 2-2 and / or the probe 2-3.

[0040] The first guide block 11 is provided with a first protrusion 11-2 for embedding into the inner cavity 19-1 of the first end 19-2 of the distribution tube on one side facing the first bracket 6, and one end of the first guide hole 11-1 is opened in the middle of the first protrusion 11-2. At this time, the first protrusion 11-2 is suspended in the first groove 6-1, and the first protrusion 11-2 and the first groove 6-1 jointly clamp and fix the first end 19-2 of the distribution tube 19, thereby improving the stability of the fixation of the first end 19-2 of the distribution tube. The shape of the first protrusion 11-2 matches the shape of the inner cavity 19-1 of the first end 19-2 of the distribution tube, and the first protrusion 11-2 is also an error-proof design to prevent the two ends of the distribution tube 19 from being reversed, and to ensure that the opening of the first end 19-2 of the distribution tube that connects to its inner cavity 19-1 corresponds to the direction of the endoscope 2, thereby improving the work efficiency of installing and fixing the distribution tube 19 before detection. In addition, the design of the first protrusion 11-2 can also ensure the axial height of the distribution tube inner cavity 19-1, ensure that the axial direction of the distribution tube inner cavity 19-1 remains horizontal, and ensure that when the mirror rod 2-2 moves back and forth in the distribution tube inner cavity 19-1 (i.e., translates in the horizontal direction), the probe 2-3 of the mirror rod 2-2 will not touch the inner wall of the distribution tube inner cavity 19-1.

[0041] A first positioning plate 12 is also provided on the base plate 1, and the first bracket 6 is fixed at one end of the first positioning plate 12 close to the first slide rail 3. A second slide rail 13 is provided at the end of the first positioning plate 12 away from the first slide rail 3. The first positioning seat 7 is connected to the second slide rail 13 through a second slider 14; the second slider 14 slides the first positioning seat 7 forward and backward along the second slide rail 13, and the first positioning seat 7 moves away from or close to the first bracket 6 with the first positioning block 9 and the second positioning block 10, and the distance between the first positioning seat 7 and the first bracket 6 is adjusted to meet the detection requirements of distribution pipes 19 of different lengths.

[0042] The second slide rail 13 and the first slide rail 3 are on the same straight line or are arranged in parallel with the first slide rail 3 to ensure that the mirror rod 2-2 can extend into the distribution tube cavity 19-1 and move back and forth in the distribution tube cavity 19-1.

[0043] An adjustment plate 15 is also provided on the base plate 1, and a plurality of adjustment holes 15-1 are provided on the adjustment plate 15. The adjustment holes 15-1 cooperate with the third positioning pin 16 to limit the position of the first positioning seat 7 in the left-right direction. In order to prevent the first positioning seat 7 from shaking left and right and to avoid affecting the consistency of the axial forward and backward movement trajectory of the distribution tube 19 and the mirror rod 2-2, the third positioning pin 16 is threadedly connected to the adjustment hole 15-1. By rotating the third positioning pin 16, the length of the third positioning pin 16 after passing through the adjustment hole 15-1 is controlled to ensure that the third positioning pin 16 is against the first positioning seat 7 after passing through the adjustment hole 15-1, thereby limiting the position of the first positioning seat 7 in the left-right direction.

[0044] The adjustment plate 15 is arranged parallel to the second slide rail 13 to ensure that when the first positioning seat 7 moves to other positions on the second slide rail 13 , the third positioning pin 16 can also abut against the moved first positioning seat 7 .

[0045] Both ends of the bottom plate 1 are connected to the handle 18 through the second connecting block 18 - 1 , so as to facilitate the carrying of the bottom plate 1 .

[0046] One end of the body 2-1 of the endoscope 2 is connected to the rod 2-2 of the endoscope 2, and the other end of the body 2-1 of the endoscope 2 is connected to the CCD sensor 17. As long as the body 2-1 of the endoscope 2 moves with the rod 2-2 in the inner cavity 19-1 of the distribution tube, the probe 2-3 on the rod 2-2 detects the bottom of the distribution tube 19 from the mouth of the distribution tube 19, and automatically transmits the image information of the inner wall of the inner cavity 19-1 of the distribution tube to the CCD sensor 17. The CCD sensor 17 will automatically analyze the processing quality inside the tube through software, and automatically judge the quality inside the distribution tube 19 according to the pre-set parameters. If it is OK, it will display qualified, if it is unqualified, it will display NOK, and an alarm will be prompted.

[0047] A method for using an automatic detection device for the inner hole of a distribution pipe, first, the body 2-1 of an endoscope 2 is moved to the rearmost side and placed at the origin; secondly, the distribution pipe 19 is positioned by a first guide block 11 and a second positioning block 10 and then placed in the first groove 6-1 of a first bracket 6 and the second groove 9-1 of a first positioning block 9, and the distribution pipe 19 is positioned; thirdly, after the distribution pipe 19 is placed, the body 2-1 of the endoscope is slowly pushed forward, and the image information inside the distribution pipe 19 is transmitted to a CCD sensor 17 through a rod 2-2 of the endoscope 2, and the CCD sensor 17 automatically detects the surface state of the inner hole of the fuel distribution pipe 19 through software, and automatically determines whether the inner hole of the distribution pipe 19 has any quality defects (such as pits or fractures, burrs or impurities), and after the inner hole of the entire fuel distribution pipe 19 is detected, the endoscope 2 is finally removed backwards and the detection is completed. The endoscope, CCD sensor, and software for automatically detecting the surface condition of the inner hole of the fuel distribution pipe 19 and automatically determining whether the inner hole of the distribution pipe 19 has any quality defects are all prior arts, so they will not be elaborated in detail.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automatic detection device for the inner hole of a distribution pipe, characterized in that: The automatic detection device for the inner hole of a distribution pipe comprises a base plate (1) and an endoscope (2); the base plate (1) is provided with a first slide rail (3), a first bracket (6) and a first positioning seat (7); the first slide rail (3) is provided with a first slider (4); the first slider (4) is connected to a first fixing seat (5); the first fixing seat (5) is connected to a body (2-1) of the endoscope (2); a mirror rod (2-2) of the endoscope (2) corresponds to an inner cavity (19-1) of the distribution pipe; and a probe (2-3) of the mirror rod (2-2) detects the inner wall of the inner cavity (19-1) of the distribution pipe; The first bracket (6) is located between the first fixing seat (5) and the first positioning seat (7); a first groove (6-1) for fixing the first end (19-2) of the distribution pipe is provided on the top of the first bracket (6); a first connecting block (8) is provided on a side of the first positioning seat (7) facing the first bracket (6); the first connecting block (8) is connected to the first positioning block (9); and a second groove (9-1) for fixing the second end (19-3) of the distribution pipe is provided on the first positioning block (9).

2. The automatic detection device for inner holes of a distribution pipe according to claim 1, characterized in that: The first connecting block (8) is also connected to the second positioning block (10), the second positioning block (10) is located below the first positioning block (9), the second positioning block (10) is provided with a first hollow portion (10-1) and a first positioning pin (10-2), the injector seat (19-4) near the second end (19-3) of the distribution pipe is embedded in the first hollow portion (10-1), and the first positioning pin (10-2) is embedded in the fixing bracket (19-5) near the second end (19-3) of the distribution pipe.

3. The automatic detection device for inner hole of a distribution pipe according to claim 2, characterized in that: A first guide block (11) is provided on one side of the first bracket (6) facing the first fixing seat (5), and a first guide hole (11-1) for circumferentially limiting the mirror rod (2-2) of the endoscope (2) is provided in the first guide block (11).

4. The automatic detection device for inner hole of a distribution pipe according to claim 3, characterized in that: A first protrusion (11-2) for embedding into the inner cavity of the first end (19-2) of the distribution pipe is provided on the side of the first guide block (11) facing the first bracket (6), and one end of the first guide hole (11-1) opens in the middle of the first protrusion (11-2).

5. The automatic detection device for inner hole of a distribution pipe according to claim 4, characterized in that: A first positioning plate (12) is also provided on the bottom plate (1), the first bracket (6) is fixed to one end of the first positioning plate (12) close to the first slide rail (3), a second slide rail (13) is provided at one end of the first positioning plate (12) away from the first slide rail (3), and the first positioning seat (7) is connected to the second slide rail (13) via a second slider (14); The second slide rail (13) and the first slide rail (3) are arranged on the same straight line or the second slide rail (13) and the first slide rail (3) are arranged in parallel.

6. The automatic detection device for inner hole of a distribution pipe according to claim 5, characterized in that: An adjustment plate (15) is also provided on the bottom plate (1), and a plurality of adjustment holes (15-1) are provided on the adjustment plate (15). The adjustment holes (15-1) cooperate with the third positioning pins (16) to limit the position of the first positioning seat (7) in the left-right direction. The adjustment plate (15) is arranged parallel to the second slide rail (13).

7. The automatic detection device for inner holes of a distribution pipe according to claim 6, characterized in that: Both ends of the bottom plate (1) are connected to the handle (18) via a second connecting block (18-1); The top of the first fixing seat (5) is detachably connected to a first fixing pressing block (5-1), and the first fixing pressing block (5-1) fixes the body (2-1) of the endoscope (2) on the top of the first fixing seat (5).

8. The automatic detection device for inner holes of a distribution pipe according to claim 7, characterized in that: One end of the endoscope body (2-1) of the endoscope (2) is connected to the endoscope rod (2-2) of the endoscope (2), and the other end of the endoscope body (2-1) of the endoscope (2) is connected to the CCD sensor (17).

9. The automatic detection device for inner holes of a distribution pipe according to claim 8, characterized in that: The shape of the first protrusion (11-2) matches the shape of the inner cavity (19-1) of the first end (19-2) of the distribution tube.

10. A method for using an automatic detection device for inner holes of a distribution pipe, characterized in that: Using the automatic detection device for inner holes of a distribution pipe as described in any one of claims 1 to 9, the specific steps are as follows: First, the body (2-1) of the endoscope (2) is moved to the rearmost side and placed at the origin position; Secondly, the distribution pipe (19) is positioned by the first guide block (11) and the second positioning block (10), and then placed in the first groove (6-1) of the first bracket (6) and the second groove (9-1) of the first positioning block (9), so that the distribution pipe (19) is positioned properly; Next, after the distribution pipe (19) is placed, the body (2-1) of the endoscope is slowly pushed forward, and the rod (2-2) of the endoscope (2) carries the probe (2-3) into the inner cavity (19-1) of the distribution pipe, and then the image information inside the distribution pipe (19) is transmitted to the CCD sensor (17). The CCD sensor (17) automatically detects the surface state of the inner hole of the fuel distribution pipe (19) through software, and automatically determines whether the inner hole of the distribution pipe (19) has any quality defects, and the inner hole of the entire fuel distribution pipe (19) is inspected; Finally, the endoscope (2) is removed backwards and the inspection is completed.

Images