Elbow profile detection

Abstract

The technical scheme belongs to the technical field of pipe fitting detection tools, and particularly relates to a bent pipe contour detection device which comprises an installation frame, the installation frame is provided with a height detection assembly, the height detection assembly comprises a first positioning block and a second positioning block which are sequentially distributed, and the first positioning block and the second positioning block are in one-to-one correspondence and used for abutting against a concave rod section and a straight rod section respectively. The upper end face of the first positioning block is provided with a first detection face, the upper end face of the second positioning block is provided with a second detection face, and the second detection face is higher than the first detection face. When the second detection face is attached to the straight rod section, the first detection face is attached to the concave rod section, and whether the overall dimension of the concave rod section meets the requirement or not is judged by detecting whether the concave rod section can be attached to the first detection face or not. The positioning and measurement of the pipe fitting are rapidly completed, the measurement steps are optimized, and the convenience of pipe fitting measurement is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe inspection tools, and in particular to a pipe bending profile detection method. Background Art

[0002] A pipe gauge is a special tool or device for measuring and evaluating pipe fittings. It can be used to measure the outer contour of pipe fittings. Pipe fitting types such as pipes, pipe joints, pipe caps and other pipe fittings with specific shapes.

[0003] In the existing technology, pipe fittings are formed after a series of processing processes. The finished pipe fittings enter the inspection link to inspect the shape and contour to determine whether the pipe fitting is a qualified product. The measurement of the pipe fitting needs to be obtained directly through tools. The shape and contour of the existing pipe fittings are relatively complex. Figure 4 , including two side rods 200 and a connecting rod 100 arranged between the two side rods 200, each side rod 200 includes an inclined rod segment 2001, a concave rod segment 2002, a straight rod segment 2003 and a vertical rod segment 2004 connected in sequence, the inclined rod segment 2001 is connected to the connecting rod 100, the concave rod segment 2002 is connected between the inclined rod segment 2001 and the straight rod segment 2003, the vertical rod segment 2004 is connected to one end of the straight rod segment 2003 away from the concave rod segment 2002, there are bends, concave or tilts between the rod segments, and multiple angles and dimensions need to be measured.

[0004] The above-mentioned method of detecting the outer contour of the pipe fitting requires measuring the corresponding angles and dimensions when measuring the dimensions at the inclined and concave positions. The measurement is difficult and the operation is cumbersome, and needs to be improved. Summary of the invention

[0005] In order to improve the problem of cumbersome dimensional measurement operations for bent, concave or tilted pipes, this technical solution provides a bend profile detection method.

[0006] The purpose of this technical solution is achieved in this way:

[0007] A bend pipe contour detection method includes a mounting frame, the mounting frame is provided with a height detection component, the height detection component includes a positioning block 1 and a positioning block 2 distributed in sequence, the positioning block 1 and the positioning block 2 correspond to each other and are respectively used for a concave rod section and a straight rod section to abut against, the upper end surface of the positioning block 1 has a detection surface 1, the upper end surface of the positioning block 2 has a detection surface 2, the detection surface 2 is higher than the detection surface 1, and when the detection surface 2 is in contact with the straight rod section, the detection surface 1 is used for the concave rod section to abut against.

[0008] Through the above technical scheme, when the bent pipe contour detection is used normally, a pipe fitting with a specific contour is placed on the mounting frame, and the pipe fitting is partially abutted against the height detection assembly through the side rod to obtain stable support. When the pipe fitting moves, the straight rod section of the side rod can abut against the positioning block two, and the concave rod section of the side rod can move to abut against the positioning block one. Based on the fact that the detection surface two is higher than the detection surface one, the straight rod section is first always fitted with the detection surface two, and whether the concave rod section can be fitted on the detection surface one is detected to determine whether the contour size of the concave rod section meets the requirements. When the concave rod section can be completely fitted on the detection surface one, it means that the contour size meets the requirements; when there is a gap between the concave rod section and the detection surface one or they cannot abut against each other, it means that they do not meet the requirements, thereby achieving rapid completion of the positioning and measurement of the pipe fitting, optimizing the measurement steps, and improving the convenience of pipe fitting measurement.

[0009] Preferably, the positioning block 1 is provided with a positioning groove 1, the groove width of the positioning groove 1 is adapted to the pipe diameter of the concave rod section, and the positioning groove is used for the concave rod section to be embedded;

[0010] The positioning block 1 is provided with an adjusting piece, the adjusting piece is located in the positioning groove 1, the upper end surface of the adjusting piece is the detection surface 1, and the adjusting piece is used to adjust the height of the detection surface 1.

[0011] Through the above technical scheme, the width of positioning groove one is adapted to the pipe diameter of the concave rod section, and is arranged based on positioning groove two and the length direction of positioning groove one along the placement direction of the side rod. When the straight rod section is embedded in positioning groove two, the concave rod section can be embedded in positioning groove one. An adjusting member one is installed in positioning groove one, and the upper end surface of the adjusting member is detection surface one. By adjusting the height of the adjusting member and changing the position of detection surface one at the same time, it is suitable for pipe fittings with different types of concave rod sections, thereby improving applicability.

[0012] When the concave rod section fits the detection surface, by detecting whether the concave rod section is in contact with the inner walls on both sides of the positioning groove, it is judged whether the pipe diameter of the concave rod section meets the requirements, thereby improving the accuracy and convenience of measuring the pipe diameter of the concave pipe section.

[0013] Preferably, the second positioning block is provided with a second positioning groove, the length directions of the second positioning groove and the first positioning groove are arranged along the placement direction of the side rod, the groove width of the second positioning groove is adapted to the pipe diameter of the straight rod section, and the second detection surface is arranged at the bottom of the second positioning groove.

[0014] Through the above technical scheme, based on the adaptation of the width of the second positioning groove and the diameter of the straight rod section, the second detection surface is set at the bottom of the second positioning groove to ensure that the straight rod section can be embedded in the catheter groove when it is in contact with the second detection surface. By detecting whether the straight rod section is in contact with the inner walls on both sides of the second positioning groove, it is judged whether the diameter of the straight rod section meets the requirements, thereby improving the accuracy and further improving the convenience of measuring the diameter of the straight pipe section.

[0015] Preferably, the adjusting member is provided with an adjusting bolt, the adjusting bolt is connected to one end of the adjusting member passing through the mounting frame, and the adjusting bolt is used to adjust the height of the adjusting member.

[0016] Through the above technical solution, the adjusting member is fixed in the positioning groove 1 by the adjusting bolt, thereby improving the installation firmness of the adjusting member. When the adjusting bolt is loosened, the adjusting member is released so that the height of the adjusting member can be adjusted, thereby improving the convenience of adjustment.

[0017] Preferably, the mounting frame is provided with a mounting seat 1, the mounting seat 1 is provided with a supporting portion, the supporting portion is provided with a limiting groove for the connecting rod to be embedded, and when the detection surface 1 is in contact with the concave rod section, the bottom of the limiting groove is used to abut against the connecting rod.

[0018] Through the above technical solution, the limiting groove of the abutment part is adapted to the connecting rod, and the connecting rod is embedded in the limiting groove. When the detection surface is in contact with the concave rod section, it is detected whether the connecting rod can be embedded in the limiting groove and at the same time can be attached to the bottom of the limiting groove, so as to judge whether the size between the connecting rod and the concave rod section meets the requirements, thereby improving the measurement efficiency.

[0019] Preferably, two height detection assemblies are provided, and the two height detection assemblies are symmetrically arranged along the side rods on both sides of the pipe fitting, and the mounting seat is located between the height detection assemblies on both sides.

[0020] Through the above technical solution, two height detection components are provided and correspond one-to-one with the side rods on both sides of the pipe fitting. The positions of the two height detection components are relatively fixed. By detecting whether the side rods on both sides of the pipe fitting can be abutted against the height detection components on both sides one-to-one, it is judged whether the distance between the two side rods meets the requirements, thereby improving the measurement efficiency and further simplifying the detection process.

[0021] Preferably, the mounting frame is further provided with a second mounting seat, which is located at an end of the mounting frame away from the first mounting seat. When the side wall of the limiting groove is in contact with the connecting rod, the end surface of the second mounting seat facing away from the mounting frame is used to align the vertical rod section.

[0022] Through the above technical solution, the pipe fitting is pushed to move toward the direction of the second mounting seat until the connecting rod is embedded in the limit groove and fits with the side wall of the limit groove. By detecting whether the vertical rod section is flush with the end face of the second mounting seat facing away from the mounting frame, it is determined whether the distance between the straight rod section and the vertical rod section meets the requirements, thereby improving the measurement efficiency and further simplifying the detection process.

[0023] Preferably, the mounting seat is provided with a measuring portion, and two measuring grooves are provided at both ends of the measuring portion, and the two measuring grooves are used for two inclined rod sections to be embedded.

[0024] Through the above technical solution, two measuring grooves are opened at both ends of the measuring part, and the two measuring grooves are used for two oblique rod segments to be embedded. By detecting whether the two oblique rod segments are embedded in the two measuring grooves at the same time and fit into the corresponding side walls, it is judged whether the distance size between the two oblique rod segments meets the requirements.

[0025] Preferably, the second mounting seat is provided with two positioning parts, and both of the two positioning parts have positioning surfaces. When the side wall of the measuring groove is in contact with the oblique rod section, the positioning surfaces are used to abut against the vertical rod section.

[0026] Through the above technical solution, when the side rod moves to the point where the oblique rod section fits against the side wall of the measuring groove, it is determined whether the distance between the vertical rod section and the oblique rod section meets the requirements by detecting whether the vertical rod section can rest against the positioning surface of the positioning part, thereby determining the shape contour of the vertical rod section relative to the straight rod section.

[0027] Preferably, each of the positioning portions is provided with two positioning grooves, the width of the positioning grooves is adapted to the diameter of the vertical rod segment, the two positioning grooves are used for two vertical rod segments to be embedded, and the positioning surface is arranged at the bottom of the positioning grooves.

[0028] Through the above technical scheme, two positioning grooves are opened at both ends of each measuring part, the groove width of the measuring groove is adapted to the tube diameter of the vertical rod segment, the two measuring grooves are used for the two vertical rod segments to be embedded, the positions of the two measuring grooves are relatively fixed, and it is possible to measure whether the distance size between the two vertical rod segments meets the requirements. When the two vertical rod segments are against the positioning surface at the same time, it is possible to judge whether the tube diameter of the vertical rod segment meets the requirements by detecting whether the two vertical rod segments are in contact with the inner walls on both sides of the measuring groove at the same time.

[0029] Compared with the prior art, the technical solution has the following outstanding and beneficial technical effects:

[0030] 1. This technical solution is provided with a height detection component on the mounting frame, the height detection component includes a positioning block 1 and a positioning block 2 which are distributed in sequence, the positioning block 1 has a detection surface 1, the positioning block 2 has a detection surface 2, the straight rod section is attached to the detection surface 1, and by detecting whether the concave rod section is attached to the detection surface 2, it is judged whether the contour size of the concave rod section meets the requirements, thereby optimizing the measurement steps and improving the convenience of pipe fitting measurement;

[0031] 2. In this technical solution, positioning block 1 is provided with positioning groove 1, and positioning block 2 is provided with positioning groove 2. The straight rod section and the concave rod section are respectively embedded in positioning groove 1 and positioning groove 2 to determine whether the pipe diameter meets the requirements;

[0032] 3. This technical solution provides an adjusting piece on the positioning block 1, the upper end surface of the adjusting piece is the detection surface 1, and the adjusting piece is used to adjust the height of the detection surface 1. By adjusting the height of the adjusting piece, the position of the detection surface 1 is changed at the same time, making it suitable for pipe fittings with different types of concave rod sections, thereby improving applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0034] Figure 2 For this embodiment Figure 1 Schematic diagram from another perspective;

[0035] Figure 3 This is a schematic diagram of the structure for measuring the pipe fittings in this embodiment;

[0036] Figure 4 It is a schematic diagram of the overall structure of the pipe fitting in the background technology.

[0037] Figure numerals: 1, mounting frame; 2, height detection assembly; 21, positioning block one; 22, positioning block two; 3, detection surface one; 4, detection surface two; 5, positioning groove one; 6, adjustment member; 7, positioning groove two; 8, adjustment bolt; 9, mounting seat one; 10, abutment portion; 11, limit groove; 12, mounting seat two; 13, measuring portion; 14, measuring groove; 16, positioning portion; 17, positioning surface; 18, positioning groove; 100, connecting rod; 200, side rod; 2001, oblique rod section; 2002, concave rod section; 2003, straight rod section; 2004, vertical rod section. DETAILED DESCRIPTION

[0038] The specific implementation of the technical solution is further described in detail below with reference to the accompanying drawings.

[0039] Example:

[0040] See also Figure 1 and Figure 3 A bend pipe contour detection method includes a mounting frame 1, which can be placed on a horizontal plane. The mounting frame 1 is used to place a pipe fitting with a specific contour. In this example, the pipe fitting includes a connecting rod 100 and two side rods 200 arranged on both sides of the connecting rod 100. The mounting frame 1 is provided with a height detection component 2. The height detection component 2 is provided with two components. The two height detection components 2 are spaced apart. The spacing direction corresponds to the position of the side rods 200 on both sides and is symmetrically arranged on the upper end surface of the mounting frame 1 along the horizontal direction. The two height detection components 2 are used to cooperate with the two side rods 200 to abut and position, and preliminarily detect the distance between the two side rods 200.

[0041] The mounting frame 1 is provided with a mounting seat 9, which is located between the height detection components 2 on both sides. The mounting frame 1 is also provided with a mounting seat 12, and the mounting seat 12 and the mounting seat 9 are respectively located at the two ends of the upper end surface of the mounting frame 1. The mounting seat 9 is located on the side close to the pipe fitting relative to the mounting seat 12, and the mounting seat 9 is used for the connecting rod 100 to abut and position.

[0042] See also Figure 1 and Figure 4 Each height detection component 2 includes a positioning block 1 21 and two positioning blocks 22. The positioning block 1 21 and the two positioning blocks 22 are distributed on the upper end surface of the mounting frame 1 at intervals in the horizontal direction, and the spacing direction is perpendicular to the distribution direction of the two height detection components 2. The position of the positioning block 1 21 is located on the side of the positioning block 22 away from the mounting seat 2 12. In this example, each side rod 200 includes an oblique rod section 2001, a concave rod section 2002, a straight rod section 2003 and a vertical rod section 2004 connected to the connecting rod 100 in sequence. The positioning block 1 21 corresponds to the positioning block 2 22 one by one and is used for the concave rod section 2002 and the straight rod section 2003 to abut against them respectively.

[0043] A positioning groove 15 is provided on the upper end surface of each positioning block 1 21, and a positioning groove 27 is provided on the upper end surface of each positioning block 22. The positioning groove 15 is parallel to the length direction of the positioning groove 27 and is arranged in the direction in which the side rod 200 is placed. The concave rod section 2002 is embedded in the positioning groove 15. When the groove width of the positioning groove 15 matches the pipe diameter of the concave rod section 2002, the pipe diameter of the concave rod section 2002 meets the requirements. When it cannot match, it means that the concave rod section 2002 does not meet the requirements. At this time, the straight rod section 2003 is also embedded in the positioning groove 27. When the groove width of the positioning groove 27 matches the pipe diameter of the straight rod section 2003, the pipe diameter of the straight rod section 2003 meets the requirements. When it cannot match, it means that the straight rod section 2003 does not meet the requirements.

[0044] The upper end surface of the positioning block 21 has a detection surface 3, and the detection surface 3 is located in the positioning groove 5. The positioning block 21 is provided with an adjusting member 6, and the adjusting member 6 is located in the positioning groove 5. The detection surface 3 is the upper end surface of the adjusting member 6. The upper end surface of the positioning block 22 has a positioning groove 27. The detection surface 24 is the bottom of the positioning groove 27. The detection surface 24 is higher than the detection surface 3. The detection surface 24 is first fitted with the straight rod section 2003. When the concave rod section 2002 is fitted with the detection surface 3, the size between the concave rod section 2002 and the straight rod section 2003 meets the requirements. On the contrary, if there is a gap, it means that it does not meet the requirements.

[0045] The mounting seat 19 is also provided with a supporting portion 10, which is located at the end of the mounting seat 19 away from the mounting frame 1, and the supporting portion 10 extends horizontally away from the direction of the mounting seat 2 12. The supporting portion 10 is provided with a limiting groove 11, and the limiting groove 11 is located at the end of the supporting portion 10 away from the mounting seat 19. The limiting groove 11 is adapted to the connecting rod 100. After the detection surface 13 is fitted with the concave rod section 2002, when the connecting rod 100 is embedded in the limiting groove 11 and abuts against the bottom of the limiting groove 11, the height dimension between the connecting rod 100 and the concave rod section 2002 meets the requirements. On the contrary, when it cannot be embedded or there is a gap with the bottom of the limiting groove 11, it means that it does not meet the requirements.

[0046] After the connecting rod 100 and the bottom of the limiting groove 11 are fitted together, the pipe fitting is pushed until the other side of the connecting rod 100 is fitted together with the side wall of the limiting groove 11 at the same time. When the vertical rod section 2004 is flush with the side of the mounting seat 2 12 facing away from the mounting frame 1, the size between the vertical rod section 2004 and the straight rod section 2003 meets the requirements. On the contrary, if they cannot be flush, they do not meet the requirements.

[0047] The mounting seat 19 is provided with a measuring part 13, which is fixed on the side of the mounting seat 19 away from the mounting seat 2 12. The height position of the measuring part 13 is adapted to the inclined rod segment 2001. Two measuring grooves 14 are provided at both ends of the measuring part 13. The two measuring grooves 14 are adapted to the two inclined rod segments 2001 in a one-to-one correspondence. When the two inclined rod segments 2001 are embedded in the measuring grooves 14 in a one-to-one correspondence, the distance between the two inclined rod segments 2001 meets the requirements. On the contrary, when they cannot be embedded or there is a gap with the side wall of the measuring groove 14, it does not meet the requirements.

[0048] The mounting seat 12 is provided with two positioning parts 16, and the two positioning parts 16 are spaced apart along the length direction of the mounting seat 12, and the two positioning parts 16 are both located on the side of the mounting seat 12 close to the mounting seat 1 9, and each positioning part 16 is provided with two positioning grooves 18, and the two positioning grooves 18 are both located at the two ends of the corresponding positioning part 16, and the two positioning grooves 18 are one-to-one matched with the two vertical rod segments 2004 for the two vertical rod segments 2004 to be embedded, and when the groove width of the positioning groove 18 is matched with the pipe diameter of the vertical rod segment 2004, the pipe diameter of the vertical rod segment 2004 meets the requirements, and when it cannot be matched, it means that the vertical rod segment 2004 does not meet the requirements.

[0049] The two positioning parts 16 both have a positioning surface 17, and the positioning surfaces 17 correspond to the positioning grooves 15. Each positioning surface 17 is located in the positioning groove 18, and the positioning surfaces 17 are arranged at the bottom of the positioning groove 18. After the oblique rod section 2001 is fitted with the side wall of the measuring groove 14, when the vertical rod section 2004 is fitted with the positioning surface 17, the distance dimension between the vertical rod section 2004 and the oblique rod section 2001 meets the requirements, and the distance dimension between the two vertical rod sections 2004 meets the requirements. On the contrary, if there is a gap, it means that it does not meet the requirements.

[0050] See also Figure 2 The adjusting member 6 is provided with an adjusting bolt 8, which is connected to one end of the adjusting member 6 passing through the mounting frame 1, and the adjusting bolt 8 is used to adjust the height of the adjusting member 6 to adapt to different concave rod segments 2002 profiles.

[0051] The specific working process of this program is as follows:

[0052] The technical solution places the pipe fitting on the mounting frame 1, and the straight rod section 2003 is embedded in the positioning groove 15 and then abuts against the detection surface 13. At this time, the concave rod section 2002 is simultaneously embedded in the positioning groove 27 and abuts against the detection surface 24, pushing the pipe fitting close to the mounting seat 2 12, the connecting rod 100 is embedded in the limiting groove 11 and abuts against the inner wall of the limiting groove 11, the vertical rod section 2004 is embedded in the positioning groove 18 of the positioning part 16 and abuts against the positioning surface 17, the vertical rod section 2004 is flush with the end face of the mounting seat 2 12 on one side away from the mounting frame 1, and the oblique rod section 2001 is simultaneously embedded in the measuring groove 14 of the measuring part 13 for positioning. When all of the above are met, it means that the overall contour size meets the requirements. When there is a gap or they cannot abut against each other, it means that they do not meet the requirements, thereby achieving rapid completion of the positioning and measurement of the pipe fitting, optimizing the measurement steps, and improving the convenience of pipe fitting measurement.

[0053] The above shows and describes the basic principle and main features of the technical solution and the advantages of the technical solution. The technicians in this industry should understand that the technical solution is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the technical solution. Without departing from the spirit and scope of the technical solution, the technical solution will have various changes and improvements, which fall within the scope of the technical solution to be protected. The scope of protection claimed by the technical solution is defined by the attached claims and their equivalents.

Claims

1. A device for detecting the contour of a bent pipe, comprising a mounting frame (1), characterized in that: The mounting frame (1) is provided with a height detection component (2), the height detection component (2) comprising a positioning block 1 (21) and a positioning block 2 (22) which are distributed in sequence, the positioning block 1 (21) and the positioning block 2 (22) corresponding to each other and respectively used for the concave rod section (2002) and the straight rod section (2003) to abut against, the upper end surface of the positioning block 1 (21) having a detection surface 1 (3), the upper end surface of the positioning block 2 (22) having a detection surface 2 (4), the detection surface 2 (4) being higher than the detection surface 1 (3), when the detection surface 2 (4) is in contact with the straight rod section (2003), the detection surface 1 (3) is used for the concave rod section (2002) to abut against.

2. The method for detecting the contour of a bent pipe according to claim 1, characterized in that: The positioning block (21) is provided with a positioning groove (5), the groove width of the positioning groove (5) is adapted to the pipe diameter of the concave rod section (2002), and the positioning groove (18) is used for the concave rod section (2002) to be embedded; The positioning block 1 (21) is provided with an adjusting member (6), the adjusting member (6) is located in the positioning groove 1 (5), the upper end surface of the adjusting member (6) is the detection surface 1 (3), and the adjusting member (6) is used to adjust the height of the detection surface 1 (3).

3. The method for detecting the contour of a bent pipe according to claim 2, characterized in that: The second positioning block (22) is provided with a second positioning groove (7), the length direction of the second positioning groove (7) and the first positioning groove (5) is arranged along the placement direction of the side rod (200), the groove width of the second positioning groove (7) is adapted to the pipe diameter of the straight rod section (2003), and the second detection surface (4) is arranged at the bottom of the second positioning groove (7).

4. The method for detecting the contour of a bent pipe according to claim 2, characterized in that: The adjusting member (6) is provided with an adjusting bolt (8), the adjusting bolt (8) being connected to one end of the adjusting member (6) passing through the mounting frame (1), and the adjusting bolt (8) being used to adjust the height of the adjusting member (6).

5. The bend pipe profile detection method according to claim 1, characterized in that: The mounting frame (1) is provided with a mounting seat (9), the mounting seat (9) is provided with a supporting portion (10), the supporting portion (10) is provided with a limiting groove (11) for the connecting rod (100) to be embedded, and when the detection surface (3) is in contact with the concave rod section (2002), the bottom of the limiting groove (11) is used to abut against the connecting rod (100).

6. The method for detecting the contour of a bent pipe according to claim 5, characterized in that: The height detection components (2) are provided with two, and the two height detection components (2) are symmetrically arranged along the positions of the side rods (200) on both sides of the pipe fitting, and the mounting seat (9) is located between the height detection components (2) on both sides.

7. The bend pipe profile detection method according to claim 5, characterized in that: The mounting frame (1) is also provided with a second mounting seat (12), and the second mounting seat (12) is located at an end of the mounting frame (1) away from the first mounting seat (9). When the side wall of the limiting groove (11) is in contact with the connecting rod (100), the end surface of the second mounting seat (12) facing away from the mounting frame (1) is used to be flush with the vertical rod section (2004).

8. The method for detecting the contour of a bent pipe according to claim 7, characterized in that: The first mounting seat (9) is provided with a measuring portion (13), and two measuring grooves (14) are provided at both ends of the measuring portion (13). The two measuring grooves (14) are used for two inclined rod sections (2001) to be embedded.

9. The bend pipe profile detection method according to claim 8, characterized in that: The second mounting seat (12) is provided with two positioning parts (16), and the two positioning parts (16) both have positioning surfaces (17). When the side wall of the measuring groove (14) is in contact with the oblique rod section (2001), the positioning surfaces (17) are used to abut against the vertical rod section (2004).

10. The bend pipe profile detection method according to claim 9, characterized in that: Each of the positioning portions (16) is provided with two positioning grooves (18), the groove width of the positioning grooves (18) being adapted to the pipe diameter of the vertical rod section (2004), the two positioning grooves (18) being used for two vertical rod sections (2004) to be embedded, and the positioning surface (17) being arranged at the groove bottom of the positioning groove (18).

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