Portable pipeline testing tool

Abstract

The utility model relates to a portable pipeline gauge tool, including gauge body and many positioning pins, the gauge body is opened with the following groove of the shape of the pipeline direction adaptation, the both sides of gauge body are provided with the limiting surface corresponding with pipeline flange angle respectively, the extension direction of limiting surface and the following groove of the shape is perpendicular, limiting surface sets up multiple pinholes and is detachably connected with the positioning bolt, through the orthogonal design of the following groove of the shape on the gauge body and limiting surface, realize pipeline space direction and the quick detection of flange angle, solve the problem that traditional gauge structure is complex, and the operation is complicated, the groove structure of continuous extension eliminates the sectional clearance, improves the detection precision and simplifies the clamping process simultaneously, the following groove of the shape is the groove that the depth adaptation pipe diameter forms contact package structure, replaces mechanical clamping and realizes automatic positioning, limiting surface and group positioning pin cooperate, and the flange angle is quickly verified through surface contact and both sides constraint, rectangular recess provides deformation avoidance space for the corrugated section, avoids detection interference.

Description

Technical Field

[0001] This utility model belongs to the field of inspection tooling technology for automotive parts, specifically relating to a portable pipeline inspection tooling. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] In the automotive parts manufacturing industry, the dimensional accuracy of piping components directly affects the assembly quality and operational safety of critical components such as engines. Inspection fixtures, as key equipment to ensure component accuracy, are widely used in production site inspection, outgoing inspection, and incoming inspection. Existing piping inspection fixtures are mostly fixed, integrated testing equipment. While they can achieve high-precision measurements, they generally suffer from complex structures, large overall size, and heavy weight. This not only requires dedicated inspection space but also fails to meet the portability requirements of rapid sampling at the production line and emergency testing during field repairs. Especially for engine piping dimensional fluctuations caused by welding deformation and accumulated assembly errors, traditional inspection fixtures struggle to achieve efficient screening. Utility Model Content

[0004] The purpose of this invention is to provide a portable pipeline inspection tool that can solve at least one of the above-mentioned technical problems.

[0005] To achieve the above objectives, an embodiment of this utility model provides a portable pipeline inspection fixture, including an inspection body and multiple positioning pins. The inspection body has a conformal groove adapted to the pipeline route. Limiting surfaces corresponding to the angle of the pipeline flange are respectively provided on both sides of the inspection body. The limiting surfaces are perpendicular to the extension direction of the conformal groove. A through groove is provided on the inspection body at the position corresponding to the corrugated section of the pipeline. Multiple pin holes are also provided on the limiting surfaces. The pin holes are detachably connected to the positioning pins for detecting the radial angle of the flange.

[0006] Furthermore, the conformal groove extends continuously along the length of the fixture body, with both ends of the conformal groove extending to the two side edges of the fixture body, respectively.

[0007] Furthermore, the depth of the conformal groove is adapted to the pipe diameter to achieve radial positioning of the pipe.

[0008] Furthermore, the limiting surface is a planar structure and is located at both ends of the fixture body.

[0009] Furthermore, the groove has a rectangular structure, and the groove is located in the middle of the conformal groove and is connected to the conformal groove.

[0010] Furthermore, the number of positioning pins is four, with each pair of positioning pins forming a group corresponding to the pin holes on the limiting surfaces on both sides of the fixture body.

[0011] Furthermore, the pin hole is provided through the limiting surface, and the pin hole and the positioning pin are fitted with a clearance fit.

[0012] Furthermore, the inspection fixture body is a one-piece structure made of aluminum alloy.

[0013] Furthermore, the bottom of the inspection fixture body is provided with an anti-slip structure, which consists of several raised stripes.

[0014] Furthermore, the fixture body is also provided with weight-reducing holes, which are evenly distributed in the non-functional areas of the fixture body.

[0015] The beneficial effects of the above technical solutions are as follows: This invention achieves rapid detection of pipeline spatial direction and flange angle through the orthogonal design of the conformal groove and limiting surface on the gauge body, solving the problems of complex structure and cumbersome operation of traditional gauges; the continuously extending groove structure eliminates segment gaps, improving detection accuracy while simplifying the clamping process.

[0016] The groove depth adapts to the pipe diameter, forming a contact covering structure to replace mechanical clamping and achieve automatic positioning; the limiting surface cooperates with the group positioning pins to quickly verify the flange angle through surface contact and double-sided constraints; the rectangular groove provides deformation avoidance space for the corrugated section to avoid detection interference. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0018] Figure 1 This is a perspective view of the inspection fixture body in an embodiment of this utility model; Figure 2 This is a bottom view of the inspection fixture body in an embodiment of this utility model; Figure 3 This is a schematic diagram of the connection between the gauge body and the pipeline in an embodiment of this utility model.

[0019] In the figure, 1 is the fixture body; 2 is the conformal groove; 3 is the limiting surface; 4 is the groove; 5 is the pin hole; 6 is the weight reduction hole; and 7 is the positioning pin. Detailed Implementation

[0020] like Figures 1 to 3As shown, this embodiment provides a portable pipeline inspection tool, including an inspection body 1 and multiple positioning pins 7. The inspection body 1 has a conformal groove 2 adapted to the pipeline direction. Limiting surfaces 3 corresponding to the pipeline flange angle are respectively provided on both sides of the inspection body 1. The limiting surfaces 3 are perpendicular to the extension direction of the conformal groove 2. A through groove 4 is provided on the inspection body 1 at the position corresponding to the pipeline corrugated section. Multiple pin holes 5 are provided on the limiting surfaces 3 and can be detachably connected to the positioning bolts through the pin holes 5.

[0021] Specifically, the conformal groove 2 constrains the overall routing of the pipeline through a continuous curved surface, and the limiting surface 3 establishes a spatial angular reference by contacting the flange end face. The two are orthogonally set to form a three-dimensional detection coordinate system. When local deformation occurs in the corrugated section of the pipeline, the through groove 4 provides clearance space to eliminate the squeezing effect of the deformed part on the fixture body 1. After the positioning bolt is inserted into the pin hole 5, the radial angular deviation is judged by the fit between the bolt body and the flange bolt hole. After the inspection is completed, the positioning bolt can be removed from the pin hole 5, so that the fixture body 1 maintains a minimum storage volume.

[0022] like Figure 1 As shown, the conformal groove 2 extends continuously along the length of the fixture body 1, with both ends extending to the two side edges of the fixture body 1. This continuous groove structure eliminates the gap areas present in traditional segmented grooves, ensuring continuous contact between all bends in the pipeline and the inner wall of the groove, thus avoiding detection errors caused by missing local supports. The design of the groove extending through both sides eliminates the need for redundant sections in the fixture body 1 that exceed the actual length of the pipeline. Material usage is optimized by precisely matching the length of the detection section. Simultaneously, the open end structure allows operators to directly place the pipeline into the groove horizontally, simplifying the clamping process. like Figure 1 and Figure 3 As shown, the depth of the conformal groove 2 is adapted to the pipe diameter, achieving radial positioning of the pipe. When the pipe is placed inside the groove, the bottom of the groove forms a three-point contact covering structure with the two side walls. The feature of depth adapting to pipe diameter ensures that the pipe axis coincides with the center line of the groove. By controlling the contact area between the groove sidewall and the outer surface of the pipe, the pipe is allowed to slide freely along the extension direction of the groove while its radial offset is restricted. This structure replaces the traditional mechanical clamping device with geometric constraints, automatically completing the pipe axis positioning during the inspection process, and achieving rapid establishment of the inspection benchmark without manual adjustment of the clamp position.

[0023] like Figure 1As shown, the limiting surface 3 is a planar structure, located at both ends of the fixture body 1. The planar limiting surface 3 forms a full circumferential fit with the end face of the pipeline flange, constraining the radial deflection angle of the flange through surface contact. The placement at both ends spatially separates the limiting surface 3 from other functional areas of the fixture body 1, avoiding structural interference. Simultaneously, the end edges serve as an operating reference, facilitating rapid flange positioning. The symmetrically distributed planar limiting surfaces 3 at both ends of the fixture body 1 form a bidirectional constraint. During inspection, angle verification can be completed simply by fitting the flange to the two limiting surfaces 3, eliminating the need to adjust complex positioning mechanisms.

[0024] The groove 4 is a rectangular structure, located in the middle of the conformal groove 2 and connected to it. The rectangular groove 4 forms a detection window on the fixture body 1. The right-angled sides of this window contrast with the crests and troughs of the corrugated section of the pipeline, allowing the degree of deformation to be judged by observing the gap between the pipeline and the edge of the groove 4. The groove 4 is located in the middle of the conformal groove 2, corresponding to the corrugated section of the pipeline that is prone to deformation during welding or assembly, allowing the detection window to directly cover quality risk points. The through-type design of the groove 4 and the conformal groove 2 ensures that the fixture body 1 retains its main positioning function while avoiding a decrease in overall rigidity due to the localized groove 4, thus maintaining structural stability.

[0025] like Figure 3 As shown, there are four locating pins 7, arranged in pairs corresponding to the pin holes 5 on the limiting surfaces 3 on both sides of the fixture body 1. The four locating pins 7 are installed in two groups, with each group of two pins inserted into the pin holes 5 on the limiting surfaces 3 on both sides of the fixture body 1. During inspection, the flange of the pipeline under test is clamped between the two groups of locating pins 7, forming a symmetrical constraint on the outer edge of the flange through the pins on both sides. When there is a radial angular deviation in the flange, a gap will be generated between at least one locating pin 7 and the flange contact surface. This gap can be determined by a feeler gauge or visual inspection. The grouped locating pins 7 can be individually disassembled when not in use, and stored in the weight-reduction hole 6 or a dedicated storage slot on the fixture body 1 for easy transport.

[0026] The pin hole 5 penetrates the limiting surface 3 and is clearance-fitted with the locating pin 7. The locating pin 7 can be inserted into the through pin hole 5 from both sides of the limiting surface 3. During operation, the insertion direction can be adjusted according to the testing requirements, avoiding the problem of a single installation path caused by traditional blind hole structures. The preset tolerance range of the clearance fit allows the locating pin 7 to retain a small axial adjustment space after insertion. When the pipeline flange has an angular deviation due to machining errors, the locating pin 7 can adaptively shift within the clearance range, avoiding jamming or wear caused by rigid contact. During the testing process, the operator can observe the clearance distribution between the locating pin 7 and the pin hole 5 to determine in real time whether the flange angle exceeds the allowable tolerance range.

[0027] The fixture body 1 is a one-piece structure made of aluminum alloy. Through casting, the fixture body 1 is machined into a continuous, unbroken single entity, avoiding the decrease in inspection accuracy caused by loose connectors or assembly errors in traditional split fixtures. Using aluminum alloy instead of traditional steel or cast iron reduces the overall weight of the tooling while maintaining the bending stiffness of the fixture body 1, meeting portability requirements. The aluminum alloy surface can be anodized to form a dense oxide layer, enhancing corrosion resistance to adapt to complex working conditions.

[0028] like Figure 2 As shown, the bottom of the fixture body 1 is equipped with an anti-slip structure, which consists of several raised stripes. The anti-slip structure generates frictional resistance through multiple contact areas formed between the stripes and the contact surface. When the fixture body 1 is placed on the worktable, the raised portions of the stripes embed into the microscopic depressions of the contact surface, forming a mechanical interlocking effect. The continuous extension of the stripes ensures that when the fixture is subjected to lateral forces, the shear stress on the contact surface is evenly distributed to multiple stripe units, thereby avoiding slippage caused by localized stress concentration. The stripe height is controlled within a range that generates effective friction without affecting the overall thickness of the fixture, maintaining its lightweight characteristics.

[0029] The fixture body 1 is also provided with weight-reducing holes 6, which are evenly distributed in the non-functional areas of the fixture body 1. These weight-reducing holes 6 are evenly distributed in the non-functional areas of the fixture body 1, such as the non-load-bearing areas in the middle or edge of the fixture body 1. This design reduces the overall weight of the fixture body 1 by selectively removing material that does not affect structural strength, while maintaining the ability of the conformal groove 2 to position the pipe path and the ability of the limiting surface 3 to constrain the flange angle. Because the weight-reducing holes 6 are only distributed in non-functional areas, the weakening of the rigidity of critical structural areas by the openings is avoided. At the same time, the even distribution ensures balanced stress on the body, preventing deformation caused by localized stress concentration.

[0030] The working principle of this utility model: The operator picks up the corrugated section of the pipeline with one hand and places it in the conformal groove 2 in the correct direction. If the pipeline can be placed smoothly, it proves that the spatial orientation, diameter, flange angles on both sides, and axial dimensions of the pipeline all meet the requirements. The conformal groove 2 constrains the overall orientation of the pipeline through a continuous curved surface, and the limiting surface 3 contacts the flange end face to establish a spatial angular reference. The two are orthogonal to form a three-dimensional detection coordinate system. Then, four locating pins 7 are taken and inserted into the pin holes 5 of the limiting surfaces 3 on both sides of the fixture body 1 in pairs. If the locating pins 7 can be inserted smoothly without misalignment or deviation, it proves that the radial angle of the flange meets the requirements. The clearance fit between the locating pins 7 and the pin holes 5 allows for slight adjustments to avoid jamming or wear caused by rigid contact, thus achieving rapid detection and positioning of the pipeline.

[0031] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A portable pipeline inspection tool, characterized in that, The fixture includes a fixture body and multiple positioning pins. The fixture body has a conformal groove adapted to the pipeline route. Limiting surfaces corresponding to the angle of the pipeline flange are respectively provided on both sides of the fixture body. The limiting surfaces are perpendicular to the extension direction of the conformal groove. A through groove is provided on the fixture body at the position corresponding to the corrugated section of the pipeline. Multiple pin holes are also provided on the limiting surfaces. The fixture body can be detachably connected to the positioning pins through the pin holes for detecting the radial angle of the flange.

2. The portable pipeline inspection tooling according to claim 1, characterized in that, The conformal groove extends continuously along the length of the fixture body, with both ends of the conformal groove extending to the two side edges of the fixture body, respectively.

3. The portable pipeline inspection tooling according to claim 1, characterized in that, The depth of the conformal groove is adapted to the pipe diameter to achieve radial positioning of the pipe.

4. The portable pipeline inspection tooling according to claim 1, characterized in that, The limiting surface is a planar structure and is located at both ends of the gauge body.

5. A portable pipeline inspection tooling according to claim 1, characterized in that, The groove is a rectangular structure, and it is located in the middle of the conformal groove and connected to the conformal groove.

6. The portable pipeline inspection tooling according to claim 1, characterized in that, The number of positioning pins is four, and each pair of positioning pins is set up to correspond to the pin holes on the limiting surfaces on both sides of the fixture body.

7. The portable pipeline inspection tooling according to claim 1, characterized in that, The pin hole is provided through the limiting surface, and the pin hole and the positioning pin are fitted with a clearance fit.

8. A portable pipeline inspection tooling according to claim 1, characterized in that, The inspection fixture body is a one-piece structure made of aluminum alloy.

9. A portable pipeline inspection tooling according to claim 1, characterized in that, The bottom of the inspection fixture body is provided with an anti-slip structure, which consists of several raised stripes.

10. A portable pipeline inspection tooling according to claim 1, characterized in that, The fixture body is also provided with weight reduction holes, which are evenly distributed in the non-functional areas of the fixture body.

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