Inspection tool equipment for bent steel pipe

Abstract

The utility model discloses inspection tool equipment for bending a steel pipe, which comprises an inspection platform, a first inspection assembly and a second inspection assembly, and is characterized in that the first inspection assembly comprises a first guide rail which is horizontally arranged on the inspection platform in an extending manner, and a first sliding group and a first positioning block which are connected and arranged on the first guide rail in a sliding manner; the second inspection assembly comprises a second guide rail which is vertically arranged on the inspection platform in an extending manner, a second sliding group and a second positioning block, the second sliding group and the second positioning block are connected and arranged on the second guide rail in a sliding manner, and scales are respectively arranged on the first guide rail and the second guide rail. Angle and length determination can be synchronously completed, abstract angle verification is converted into visual physical fitting determination by using an orthogonal rigid structure of the horizontal slide rail and the vertical slide rail, one-button rapid detection of a bent steel pipe product is realized, human factors are reduced, detection time is greatly shortened, and working efficiency is improved.

Description

Inspection fixture for bending steel pipes Technical Field

[0001] This utility model relates to the field of steel pipe testing tooling technology, specifically to a testing tooling device for bent steel pipes. Background Technology

[0002] The existing steel pipes are selected and installed based on the installation location of the connecting equipment, resulting in complex connection structures and numerous installation angles for some pipe fittings. Among these, steel pipes bent at 90° angles are the most widely used. Currently, steel pipe products manufactured by manufacturers must undergo multiple tests, including mechanical performance and dimensional checks, according to national standards. Therefore, it is necessary to test the angle and length dimensions of steel pipes bent at 90° angles to verify whether the steel pipe products meet the usage standards. The usual practice is to manually measure the length of the steel pipe with calipers and then measure the angle with an angle meter. As can be seen, the current testing methods for measuring the dimensions and angles of steel pipes are relatively cumbersome, the operation process is tedious, the measurements are not accurate enough, and the work efficiency is low. Summary of the Invention

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the problem that the existing technology uses calipers and angle gauges to measure whether the length and angle of the bent steel pipe meet the standards, which makes the whole inspection operation process cumbersome, the measurement inaccurate, and the work efficiency low.

[0004] To solve the above-mentioned technical problems, this utility model provides an inspection tooling device for bending steel pipes, including: an inspection platform;

[0005] The first inspection component includes a first guide rail extending horizontally on the inspection platform, a first sliding group slidably connected to the first guide rail, a first positioning block on the first sliding group for positioning one end of the connected steel pipe, a first scale extending along the moving direction of the first sliding group on the first guide rail or the inspection platform, and a first indicator linked to the first sliding group and pointing to the first scale.

[0006] The second inspection component includes a second guide rail disposed on the inspection platform along a direction perpendicular to the first guide rail, a second sliding assembly slidably connected to the second guide rail, and a second positioning block disposed on the second sliding assembly for positioning the other end of the connected steel pipe. It also includes a second scale extending along the moving direction of the second sliding assembly on the second guide rail, and a second indicator linked to the second sliding assembly and pointing to the second scale. The bent steel pipe is positioned and installed between the first positioning block and the second positioning block.

[0007] As a preferred embodiment, the first sliding group includes a first slider slidably connected to the first guide rail, and a first mounting plate linked to the first slider and arranged parallel to the inspection platform, wherein the first positioning block is detachably disposed on the top of the first mounting plate.

[0008] As a preferred embodiment, the second sliding group includes a first slider slidably connected to the second guide rail, and a second mounting plate linked to the first slider and perpendicular to the inspection platform. The second positioning block is detachably mounted on the top of the second mounting plate.

[0009] As a preferred embodiment, the first positioning block and the second positioning block are respectively fixed to the cylindrical protrusions on the first mounting plate and the second mounting plate by fasteners, and both are provided with fixing holes for installing fasteners. The top of the first positioning block and the second positioning block are provided with a circular protrusion that matches and is inserted into the steel pipe port and an annular step portion formed around the outside of the circular protrusion.

[0010] As a preferred embodiment, the first indicator is a first indicator arrow fixed on the side wall of the first mounting plate, and the second indicator is a second indicator arrow fixed on the side wall of the second mounting plate.

[0011] As a preferred embodiment, the inspection platform includes a platform body and multiple platform side plates disposed around the platform body, and a plurality of connecting holes disposed at equal intervals on the platform body and the multiple platform side plates. The first guide rail and the second guide rail are respectively fixed to the platform body by an installation structure. The installation structure includes multiple first through holes disposed on the first guide rail, a connecting block fixedly embedded in the connecting holes of the platform body, and an installation screw that passes through the first through holes and is fixed to the connecting block. The connecting block is provided with a threaded hole that mates with the installation screw. When the installation screw is tightened, the first guide rail is horizontally installed on the platform body.

[0012] As a preferred embodiment, the mounting structure further includes an upper mounting bracket fixedly connected to the back of the second guide rail and a lower mounting bracket fixedly connected to the side plate of the platform. When the upper mounting bracket and the lower mounting bracket are fixedly connected, the second guide rail is vertically mounted on the platform body.

[0013] As a preferred embodiment, the first mounting plate or the first slider is provided with a first bracket plate through which the first guide rail can pass. A first gap is formed between the first bracket plate and the side wall of the first guide rail. A first locking block is provided in the first gap and connected to the first bracket plate by an adjusting screw. By rotating the adjusting screw, the first locking block is driven to move and press against the side wall of the first guide rail.

[0014] As a preferred embodiment, the second mounting plate or the second slider is provided with a second bracket plate through which the second guide rail can pass. A second gap is formed between the second bracket plate and the side wall of the second guide rail. A second locking block is provided in the second gap and connected to the second bracket plate by an adjusting screw. By rotating the adjusting screw, the second locking block is driven to move and press against the side wall of the second guide rail.

[0015] As a preferred embodiment, the first mounting plate or the second mounting plate is rotatably mounted on the first slider or the second slider via an adjustment mechanism. The adjustment mechanism includes an adjustment bracket mounted on the first slider or the second slider, a connecting shaft and an adjustment shaft rotatably mounted on the adjustment bracket, and a gear pair connecting the connecting shaft and the adjustment shaft. The first mounting plate or the second mounting plate is linked to the connecting shaft.

[0016] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0017] 1. This utility model provides an inspection fixture for bent steel pipes. The relative positions of the first and second sliding groups are pre-adjusted according to the angle and length testing standards of the bent steel pipe. Then, the two ends of the bent steel pipe are respectively positioned and inserted onto the second and second positioning blocks. The flatness of the fit between the two ends of the steel pipe is observed to determine if the 90° standard is met. Simultaneously, the length data of the steel pipe in the vertical and horizontal directions can be directly read through the indicator and scale. The advantage of this technical solution is that the angle and length can be determined simultaneously at the instant the two ends of the steel pipe are fitted onto the two positioning blocks. Utilizing the orthogonal rigid structure of the horizontal and vertical slide rails, the abstract angle verification is transformed into an intuitive physical fit judgment. Through the integration of mechanical positioning and a scale, the step-by-step operation of traditional calipers and angle gauges is eliminated, achieving one-click rapid testing of bent steel pipe products. The operation is convenient and quick, reducing human error and achieving standardized product testing. This significantly reduces testing time, facilitates the qualified testing of bent steel pipe products, reduces labor intensity, and improves work efficiency.

[0018] 2. This utility model provides an inspection fixture for bending steel pipes. A first locking block is connected to a first support plate via a first screw and accommodated in a first gap formed between the first support plate and the side wall of the first guide rail. After the first mounting plate is moved and adjusted to its position by the first slider, to achieve precise locking of the first mounting plate's adjusted position, the first screw on the first support plate is rotated. This causes the first screw to move the first locking block in the first gap using the characteristics of threaded transmission. The locking / releasing of the first locking block can be completed by manually rotating the first screw. This structural design, by rotating the first screw to drive the first locking block into contact with the side wall of the first guide rail, utilizes the linear relationship between contact surface pressure and friction to increase the locking force, achieving precise locking of the positions of the first mounting plate and the first slider. This achieves a limiting effect, resisting the displacement tendency of the first slider sliding along the first guide rail, preventing slight deviation of the first mounting plate during inspection. Through the combination of mechanical friction limiting and stepless adjustment, precise locking and flexible adaptation between the guide rail and the slider are achieved. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 is a three-dimensional structural diagram of the inspection tooling equipment of this utility model;

[0021] Figure 2 is a side view of the inspection tooling equipment of this utility model;

[0022] Figure 3 is a schematic diagram of the structure of the inspection platform of this utility model;

[0023] Figure 4 is a schematic diagram of the structure of the first inspection component of this utility model;

[0024] Figure 5 is a schematic diagram of the installation structure of the adjustment mechanism and the first mounting plate of this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Inspection platform; 11. Platform body; 12. Platform side plate; 13. Connecting hole; 14. Upper mounting bracket; 15. Lower mounting bracket; 16. Connecting block; 2. First guide rail; 21. First scale; 3. First sliding group; 31. First slider; 32. First mounting plate; 33. First support plate; 34. First indicator; 4. First positioning block; 5. Second guide rail; 51. Second scale; 6. Second sliding group; 61. Second slider; 62. Second mounting plate; 63. Second support plate; 64. Second indicator; 7. Second positioning block; 81. First locking block; 82. Second locking block; 83. Adjusting screw; 9. Adjusting bracket; 91. Adjusting shaft; 92. Connecting shaft. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Example

[0029] This utility model provides an inspection fixture for bending steel pipes, as shown in Figures 1-5, comprising:

[0030] Testing Platform 1;

[0031] The first inspection component includes a first guide rail 2 that extends horizontally on the inspection platform 1, a first sliding group 3 that is slidably connected to the first guide rail 2, and a first positioning block 4 that is set on the first sliding group 3 for positioning one end of the connected steel pipe. It also includes a first scale 21 that extends along the moving direction of the first sliding group 3 on the first guide rail 2 or the inspection platform 1, and a first indicator 34 that is linked to the first sliding group 3 and points to the first scale 21.

[0032] The second inspection component includes a second guide rail 5 mounted on the inspection platform 1 along a direction perpendicular to the first guide rail 2, a second sliding group 6 slidably connected to the second guide rail 5, and a second positioning block 7 mounted on the second sliding group 6 for positioning the other end of the connected steel pipe. It also includes a second scale 51 extending along the moving direction of the second sliding group 6 on the second guide rail 5, and a second indicator 64 linked to the second sliding group 6 and pointing to the second scale 51. Since the first guide rail 2 and the second guide rail 5 are mounted perpendicularly on the inspection platform 1, and the plane of the inspection platform 1 is used as a horizontal reference plane, the moving direction of the first sliding group is parallel to the horizontal reference plane, and the moving direction of the second sliding group is perpendicular to the horizontal reference plane, the bent steel pipe is positioned and mounted between the first positioning block 4 and the second positioning block 7. A in Figure 1 represents the bent steel pipe.

[0033] The above-described implementation method is the core technical solution of this embodiment. When inspecting a 90° bent steel pipe using inspection equipment, the relative positions between the first sliding group 3 and the second sliding group 6 are pre-adjusted according to the angle and length inspection standards of the bent steel pipe. Then, the two ends of the bent steel pipe are respectively positioned and inserted into the second positioning block 7 and the second positioning block 8. The flatness of the fit between the two ends of the steel pipe is observed to determine whether the 90° standard is met. At the same time, the length data of the steel pipe in the vertical and horizontal directions can be directly read through the indicator and scale. The advantage of this technical solution is that, through the steel... The angle and length can be determined simultaneously at the moment the two ends of the pipe are fitted onto the two positioning blocks. Utilizing the orthogonal rigid structure of the horizontal and vertical slide rails (default 90° reference), the abstract angle verification is transformed into an intuitive physical fit judgment. Through the integration of mechanical positioning and rulers, the step-by-step operation of traditional calipers and angle gauges is eliminated, realizing one-click rapid inspection of bent steel pipe products. The operation is convenient and fast, reduces human factors, and achieves standardized product inspection. This can significantly reduce inspection time, facilitate the qualified inspection of bent steel pipe products, reduce labor intensity, and improve work efficiency.

[0034] The specific settings of the first and second sliding groups are explained in detail below with reference to Figure 1-4:

[0035] The first sliding group 3 includes a first slider 31 slidably connected to the first guide rail 2, and a first mounting plate 32 linked to the first slider 31 and arranged parallel to the inspection platform 1. The first positioning block 4 is detachably mounted on the top of the first mounting plate 32 by fasteners. The first positioning block 4 and the first mounting plate 32 are respectively provided with fixing holes for mounting fasteners. The first positioning block 4 and the first mounting plate 32 are fixedly connected by fasteners. The first indicator 34 is a first indicator arrow fixed on the side wall of the first mounting plate 32. Further preferably, the second sliding group 6 includes a first slider 31 slidably connected to the second guide rail 5, and a second mounting plate 62 linked to the first slider 31 and arranged perpendicular to the inspection platform 1. The second positioning block 7 is detachably mounted on the top of the second mounting plate 62 by fasteners. The second positioning block 7 and the second mounting plate 62 are respectively provided with fixing holes for installing fasteners. The second positioning block 7 and the second mounting plate 62 are fixedly connected by fasteners. The first indicator 34 is a second indicator arrow fixed on the side wall of the second mounting plate 62. With this structure, the first guide rail 2 and the first slider 31 are responsible for the horizontal displacement adjustment of the first positioning block 4 on the inspection platform, and the second guide rail 5 and the second slider 61 are responsible for the vertical displacement adjustment of the second positioning block 7 on the inspection platform. This adapts to the positioning connection requirements of the two ends of steel pipes of different lengths. This embodiment uses a combination of horizontal and vertical guide rails to provide multi-dimensional adjustment capabilities for the two positioning blocks. The structure is stable, easy to operate, and highly adaptable. At the same time, it takes into account both accuracy and efficiency, and is suitable for the rapid and accurate inspection of steel pipes of various specifications.

[0036] In a further preferred configuration, the top of both the first positioning block 4 and the second positioning block 7 is provided with a circular protrusion that is matched and inserted into the steel pipe port, and an annular step portion that is formed around the outside of the circular protrusion. The circular protrusion is inserted into the steel pipe port to position and install the steel pipe, so as to prevent the steel pipe from being displaced or shaking during the inspection process, and the installation stability is good.

[0037] As shown in Figure 3, the inspection platform 1 includes a platform body 11 and a plurality of platform side plates 12 disposed around the platform body 11, and a plurality of connecting holes 13 disposed at equal intervals on the platform body 11 and the plurality of platform side plates 12. The first guide rail 2 and the second guide rail 5 are respectively fixed on the platform body 11 by an installation structure. The installation method of the first guide rail 2 and the second guide rail 5 is described in detail below: The installation structure includes multiple first through holes provided on the first guide rail 2, a connecting block 16 fixedly embedded in the connecting hole 13 of the platform body 11, and a mounting screw that passes through the first through holes and is fixed on the connecting block 16. The connecting block 16 is provided with a threaded hole that mates with the mounting screw. When the mounting screw is tightened, the first guide rail 2 is horizontally installed on the platform body 11, thus achieving the horizontal installation of the first guide rail 2 on the inspection platform 1. Further preferably, the installation structure also includes an upper mounting bracket 14 fixedly connected to the back of the second guide rail 5, and a lower mounting bracket 15 fixedly connected to the side plate 12 of the platform. When the upper mounting bracket 14 and the lower mounting bracket 15 are fixedly connected, the second guide rail 5 is vertically installed on the platform body 11, thus achieving the vertical installation of the second guide rail 5 on the inspection platform 1. Of course, the second guide rail 5 can be directly fixed to the platform body by a mounting bracket. This inspection platform 1 is made of casting material and has several connection holes designed to meet the installation and use needs of multiple inspection tooling equipment. The guide rail and mounting bracket can be installed on the standard inspection platform by means of positioning pins, positioning screws or mounting brackets. It is easy to install and can also meet the on-site simulation installation of steel pipes for complex connection positions and installation angles. It has multiple uses and a wide range of applications.

[0038] In this embodiment, in order to achieve precise locking of the adjustment position of the first mounting plate, referring to FIG4, the first mounting plate 32 or the first slider 31 is provided with a first bracket plate 33 through which the first guide rail 2 can pass. That is, the first bracket plate 33 can be installed at the bottom of the first mounting plate or at the first sliding end. A first gap is formed between the first bracket plate 33 and the side wall of the first guide rail 2. A first locking block 81 connected to the first bracket plate 33 through an adjusting screw 83 is provided in the first gap. By rotating the adjusting screw 83, the first locking block 81 is driven to move and press against the side wall of the first guide rail 2. The locking / releasing of the first locking block 81 can be completed by manually rotating the first screw. With this structural design, after the first slider 31 moves and adjusts the position of the first mounting plate 32, rotating the first screw causes the first locking block 81 to move in the first gap using the characteristics of threaded transmission. Rotating the first screw drives the first locking block 81 to press against the side wall of the first guide rail 2, and the linear relationship between the contact surface pressure and friction increases the locking force, achieving precise locking of the positions of the first mounting plate 32 and the first slider 31, thus achieving a limiting effect. This can resist the displacement tendency of the first slider along the first guide rail, thereby preventing the first mounting plate from slightly shifting during the detection process. Through the combination of mechanical friction limiting and stepless adjustment, precise locking and flexible adaptation between the guide rail and the slider are achieved.

[0039] In a further preferred configuration, to achieve precise locking of the second mounting plate's adjustment position, the second mounting plate 62 or the second slider 61 is provided with a second support plate 63 through which the second guide rail 5 can pass. A second gap is formed between the second support plate 63 and the side wall of the second guide rail 5. A second locking block 82, connected to the second support plate 63 via an adjusting screw 83, is provided in the second gap. By rotating the adjusting screw 83, the second locking block 82 is driven to move and press against the side wall of the second guide rail 5. Locking / releasing the second locking block 82 can be completed by manually rotating the second screw. Thus, in this embodiment, the first mounting plate 32 and the second mounting plate 62 adopt the same limiting and locking method. The advantage of this design is that by rotating the second screw, the second locking block 82 is driven to press against the side wall of the second guide rail. The linear relationship between the contact surface pressure and friction is used to increase the locking force, thereby achieving limiting and locking of the second mounting plate and the second slider. This prevents the second mounting plate from shifting slightly during the inspection process, ensuring the stability and reliability of the steel pipe inspection process.

[0040] To enable the inspection of steel pipes with various bending angles, the testing fixture in this embodiment can be equipped with an adjustment mechanism designed on the first slider 31 or the second slider 61 to support the rotation of the first mounting plate 32 or the second mounting plate 62. Referring to Figure 5, the first mounting plate 32 or the second mounting plate 62 is rotatably mounted on the first slider 31 or the second slider 61 via the adjustment mechanism. The adjustment mechanism includes an adjustment bracket 9 mounted on the first slider 31 or the second slider 61, a connecting shaft 92 and an adjustment shaft 91 respectively rotatably mounted on the adjustment bracket 9, and a gear pair connecting the connecting shaft 92 and the adjustment shaft 91. The first mounting plate 32 or the second mounting plate 62 is linked to the connecting shaft 92. Preferably, the gear pair is a worm gear drive, with the worm gear linked to the adjustment shaft 91 and the worm wheel linked to the connecting shaft 92. The optimized worm gear drive speed ratio ensures that manually rotating the worm gear one revolution corresponds to rotating the mounting plate by a certain angle. The reverse self-locking characteristic of the worm gear ensures that the angle is absolutely fixed after adjustment. With this structural design, when the adjusting shaft 91 is rotated, the adjusting shaft 91 drives the connecting shaft 92 to rotate through the gear pair, thereby driving the first mounting plate 32 or the second mounting plate 62 to rotate continuously relative to the first slider 31 or the second slider 61. This allows the first mounting plate and the first slider or the second mounting plate and the second slider to be arranged at a certain tilt angle, which can adapt to the inspection of steel pipes with various bending angles. This upgrades the original single 90° inspection fixture into a multi-angle adaptive inspection platform with good compatibility.

[0041] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An inspection fixture for bending steel pipes, characterized in that, include: Inspection platform (1); first inspection component, including a first guide rail (2) extending horizontally on the inspection platform (1), a first sliding group (3) slidably connected to the first guide rail (2), and a first positioning block (4) on the first sliding group (3) for positioning one end of the connecting steel pipe, and also including a first scale (21) extending along the moving direction of the first sliding group (3) on the first guide rail (2) or the inspection platform (1), and a first indicator (34) linked to the first sliding group (3) and pointing to the first scale (21). The second inspection component includes a second guide rail (5) that extends perpendicularly to the first guide rail (2) and is disposed on the inspection platform (1), a second sliding group (6) that is slidably connected to the second guide rail (5), a second positioning block (7) disposed on the second sliding group (6) for positioning the other end of the connecting steel pipe, a second scale (51) that extends along the moving direction of the second sliding group (6) and is disposed on the second guide rail (5), and a second indicator (64) that is linked to the second sliding group (6) and points to the second scale (51).

2. The inspection fixture for bending steel pipes according to claim 1, characterized in that: The first sliding group (3) includes a first slider (31) slidably connected to the first guide rail (2) and a first mounting plate (32) linked to the first slider (31) and parallel to the inspection platform (1). The first positioning block (4) is detachably mounted on the top of the first mounting plate (32) by fasteners.

3. The inspection fixture for bending steel pipes according to claim 2, characterized in that: The second sliding group (6) includes a first slider (31) slidably connected to the second guide rail (5) and a second mounting plate (62) linked to the first slider (31) and perpendicular to the inspection platform (1). The second positioning block (7) is detachably mounted on the top of the second mounting plate (62) by fasteners.

4. The inspection fixture for bending steel pipes according to claim 3, characterized in that: The first positioning block (4) and the second positioning block (7) are respectively provided with fixing holes for installing fasteners. The top of the first positioning block (4) and the second positioning block (7) are provided with a circular protrusion that is matched and inserted into the steel pipe port and an annular step portion that is formed around the outside of the circular protrusion.

5. The inspection fixture for bending steel pipes according to claim 3, characterized in that: The first indicator (34) is a first indicator arrow fixed on the side wall of the first mounting plate (32), and the first indicator (34) is a second indicator arrow fixed on the side wall of the second mounting plate (62).

6. The inspection fixture for bending steel pipes according to any one of claims 1-5, characterized in that: The inspection platform (1) includes a platform body (11) and multiple platform side plates (12) arranged around the platform body (11), and a number of connecting holes (13) arranged at equal intervals on the platform body (11) and the multiple platform side plates (12). The first guide rail (2) and the second guide rail (5) are respectively fixed on the platform body (11) by an installation structure. The installation structure includes multiple first through holes arranged on the first guide rail (2), a connecting block (16) fixedly embedded in the connecting hole (13) of the platform body (11), and an installation screw that passes through the first through hole and is fixed on the connecting block (16). The connecting block (16) is provided with a threaded hole that mates with the installation screw. When the installation screw is tightened, the first guide rail (2) is horizontally installed on the platform body (11).

7. The inspection fixture for bent steel pipes according to claim 6, characterized in that: The mounting structure also includes an upper mounting bracket (14) fixedly connected to the back of the second guide rail (5) and a lower mounting bracket (15) fixedly connected to the side plate (12) of the platform. When the upper mounting bracket (14) and the lower mounting bracket (15) are fixedly connected, the second guide rail (5) is vertically mounted on the platform body (11).

8. The inspection fixture for bending steel pipes according to claim 2, characterized in that: The first mounting plate (32) or the first slider (31) is provided with a first bracket plate (33) through which the first guide rail (2) can pass. A first gap is formed between the first bracket plate (33) and the side wall of the first guide rail (2). A first locking block (81) is provided in the first gap and connected to the first bracket plate (33) by an adjusting screw (83). By rotating the adjusting screw, the first locking block (81) is driven to move and press against the side wall of the first guide rail (2).

9. The inspection fixture for bending steel pipes according to claim 3, characterized in that: The second mounting plate (62) or the second slider (61) is provided with a second bracket plate (63) through which the second guide rail (5) can pass. A second gap is formed between the second bracket plate (63) and the side wall of the second guide rail (5). A second locking block (82) is provided in the second gap and is connected to the second bracket plate (63) by an adjusting screw (83). By rotating the adjusting screw, the second locking block (82) is driven to move and press against the side wall of the second guide rail (5).

10. An inspection fixture for bending steel pipes according to claim 8 or 9, characterized in that: The first mounting plate (32) or the second mounting plate (62) can be rotatably mounted on the first slider (31) or the second slider (61) via an adjustment mechanism. The adjustment mechanism includes an adjustment bracket (9) mounted on the first slider (31) or the second slider (61), a connecting shaft (92) and an adjustment shaft (91) respectively rotatably mounted on the adjustment bracket (9), and a gear pair connecting the connecting shaft (92) and the adjustment shaft (91). The first mounting plate (32) or the second mounting plate (62) is linked to the connecting shaft (92).

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