Pipeline testing fixture

Abstract

The utility model belongs to the technical field of automobile part detection, and discloses a pipeline detection tool, which comprises a plurality of detection blocks and a substrate, each detection block comprises a height-adjustable support column and a detection assembly, the detection assembly can be inserted into the top end of the support column in a limited manner, and the bottom end of the support column can be fixedly connected with the substrate. According to the utility model, the split design of the detection block and the substrate is adopted, so that the processing cost is reduced; the height-adjustable support column improves the universality of the detection block and saves the processing cost and the processing time; the detection assembly is inserted into the top end of the height column in a limiting mode, and the installation speed and modification speed of detection blocks on all detection points of a pipeline product are improved. The detection block and the substrate are fixed in a magnetic attraction manner, so that the detection block is more convenient to mount and modify; height columns of various heights can be prepared in advance, rapid assembly of the detection block is achieved, and the manufacturing period of the detection tool is greatly shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts detection, and more specifically, relates to a pipeline inspection tool. Background Art

[0002] At present, the inspection tools for pipe parts generally adopt integral inspection tools, that is, the inspection blocks at each detection point and the base plate are an integral body and cannot be separated. After the inspection block blanks and the base plate are welded into an integral body, they are machined into shape. Although the accuracy is high, the cost is also very high, and a set of inspection tools can only be used for the detection of one product. Once the product is discontinued, the inspection tool can only be scrapped as a whole. Once the product design is changed and the pipeline layout is slightly adjusted accordingly, the process of modifying the inspection tool is very cumbersome and it is difficult to guarantee the accuracy. To sum up, the current inspection tools for pipe parts have the disadvantages of high cost investment, low versatility, difficulty in modification, and inability to be reused repeatedly for a long time. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a pipeline inspection tool, which adopts a split design of the inspection block and the base plate to reduce the processing cost; the adjustable-height support columns improve the versatility of the inspection block, save processing costs and processing time; the detection components are inserted into the top of the height columns in a limited way, which improves the installation speed and modification speed of the inspection blocks at each detection point of the pipeline product; the inspection block and the base plate adopt a magnetic adsorption fixing method, which makes the installation and modification of the inspection block more convenient; height columns with various heights can be prepared in advance to realize the rapid assembly of the inspection block, greatly shortening the production cycle of the inspection tool.

[0004] The specific solution is as follows:

[0005] A pipeline inspection tool includes a plurality of inspection blocks and a base plate. Each inspection block includes a support column with adjustable height and a detection component. The detection component can be inserted into the top of the support column in a limited way, and the bottom end of the support column can be fixedly connected to the base plate.

[0006] During the detection process of the entire pipeline, multiple detection blocks need to be arranged at different detection points on the substrate according to the shape and orientation of the pipeline. In the prior art, the support columns of the detection blocks at each detection point are individually processed according to the undulation and orientation of the pipeline at the corresponding detection point. Even if the height can be adjusted, it is only limited to fine-tuning, resulting in high processing costs, long processing times, and poor versatility. The support column of the detection block of the present utility model includes multiple height columns of various heights. The heights of the height columns can be divided into different specifications and pre-processed for standby. For example, the height columns can be processed into four specifications of 50mm, 40mm, 30mm, and 20mm. An insertion hole capable of limiting the position is provided on the upper end surface of each height column, and the shape of the lower end thereof matches that of the insertion hole. Two adjacent height columns can be inserted and limited to each other to jointly form the required support column. The support column further includes at least one gasket. Gaskets of various thicknesses can be prepared in advance. A through hole is provided in the middle of the gasket, and it can be sleeved on the connecting column. The gasket is used for fine-tuning the height of the support column. The gasket can be provided between the lowermost height column and the upper end surface of the substrate, or between two adjacent height columns. The detection component is made by non-metal 3D printing, with low processing costs and fast processing speeds, and can be processed one by one according to the shape and orientation of the pipeline to be detected. The shape and size of the connecting column at the lower end of the detection component match the shape and size of the insertion hole of the height column. When the detection component is processed, the connection position of the connecting column on the lower end surface of the detection component, the shape and setting position of the U-shaped groove of the detection component are set according to the pipeline orientation at the detection point, so as to solve the problem of insufficient density of the preset positioning holes on the substrate and meet the requirements of the pipeline orientation at the corresponding detection point. It is very convenient to disassemble by being inserted and limited at the top of the support column. Once the pipeline is modified, only the detection components at certain detection positions need to be replaced and the height of the support column adjusted to complete the modification of the detection block here. The present utility model greatly improves the versatility of the support column and saves processing costs; especially, after the pipeline product is modified, the inspection tool can be quickly modified accordingly, reducing the modification difficulty and avoiding the situation where multiple pipeline inspection tools are scrapped due to product reshaping; and spare parts can be prepared in advance, and a new inspection tool can be quickly assembled when needed, shortening the assembly cycle of the inspection tool and improving production efficiency.

[0007] Further, the support column includes at least one height column, and each height column includes a columnar connecting portion and a connecting shaft. The connecting shaft is coaxially arranged at the center of the lower end surface of the columnar connecting portion. A plugging hole is coaxially provided at the center of the upper end surface of each columnar connecting portion. Each connecting shaft is a cylinder, and a planar limiting missing portion is provided on the side wall of the cylinder. The horizontal cross-sectional shape of the corresponding plugging hole is the same as the horizontal cross-sectional shape of the connecting shaft. The plugging hole at the upper end of the uppermost height column is inserted and limited in alignment with the detection component, and the connecting shaft at the lower end of the lowermost height column is fixedly connected to the substrate.

[0008] Furthermore, the support column includes more than two height columns. The height columns adjacent to each other up and down are limited and inserted into each other, and the connecting shaft can be matched and limitedly inserted into the insertion hole of another adjacent height column.

[0009] Process multiple height columns with different heights in advance. Multiple height columns can be arbitrarily combined to form a support column. One height column can be used, or multiple height columns can be used to form a support column. The specific quantity and specifications are selected according to the actual situation. The height column includes a columnar connecting part and a connecting shaft. An insertion hole is provided on the upper end surface of the columnar connecting part. The connecting shaft is a cylinder, and a planar limiting missing part is provided on the side wall of the cylinder. The horizontal cross-sectional shape corresponding to the insertion hole is the same as the horizontal cross-sectional shape of the connecting shaft, and they can be matched, limited, and inserted and fixed to each other. If two or more height columns are used, the adjacent height columns can be connected in pairs. The insertion hole at the upper end of the uppermost height column is aligned and limitedly inserted and combined with the detection component, and the connecting shaft at the lower end of the lowermost height column is fixedly connected to the substrate. Here, if the connecting shaft is a cylinder and the insertion hole is also a circular blind hole, the connecting shaft will rotate circumferentially in the hole, affecting the detection result; while the connecting shaft selected for this inspection tool is provided with a planar limiting missing part, so that the horizontal interface of the connecting shaft is no longer circular, and the insertion hole is no longer a circular blind hole, making the connecting shaft unable to rotate in the hole and ensuring the detection quality.

[0010] Furthermore, the support column further includes at least one gasket. A through hole is provided at the center of each gasket, and the gasket is sleeved on the corresponding connecting shaft through the through hole.

[0011] Height columns with different heights can be limited and inserted into each other to adjust the height of the support column. Considering cost savings, it is impossible to process height columns with various different heights. At this time, some gaskets with different thicknesses need to be processed to finely adjust the height of the support column. The gasket can be installed between the support column and the substrate, or between two height columns, and is installed according to the actual situation, which is convenient, fast, and cost-saving.

[0012] Furthermore, the upper end of the detection component is a block structure provided with a U-shaped groove opening upward, and a connecting column is provided on the lower end surface of the detection component. The connecting column can be matched and limitedly inserted into the insertion hole of the adjacent height column.

[0013] The upper end of the detection component is a block structure with a U-shaped groove opening upward. When the direction of the pipeline at the detection point is the same as the horizontal direction, the upper end of the detection component is a rectangular block; when the direction of the pipeline at the detection point is different from the horizontal direction, the upper end of the detection component is a trapezoidal block. The arc of the U-shaped groove of the detection component matches the shape and size of the corresponding position of the pipeline to be detected. A connecting column is provided on the lower end face of the detection component, and the shape and size of the connecting column match the plug-in hole on the upper end face of the height column. The connecting column of the detection component is limitedly plugged into the plug-in hole of the height column adjacent to it, and disassembly is very convenient. When the pipeline product is modified, it is only necessary to replace the detection component at a specific position and adjust the height of the support column to complete the modification of the entire inspection fixture, which reduces the difficulty of modifying the inspection fixture and avoids the situation where the pipeline inspection fixtures at most detection points cannot be used due to product modification.

[0014] Furthermore, a plurality of positioning holes are evenly distributed on the substrate, and the horizontal cross-sectional shape of each positioning hole is the same as the horizontal cross-sectional shape of the connecting shaft. The connecting shaft of the height column at the lowest end can be limitedly inserted into the positioning hole and its lower end is exposed outside the lower end surface of the substrate. An external thread is provided on the arc-shaped side wall at the lower end of the connecting shaft, and the height column at the lowest end is screwed and fixed to the lower end surface of the substrate by the connecting shaft and a nut.

[0015] The distribution of the center of the positioning holes of the substrate of the utility model on the substrate can be evenly spaced at intervals of 40 mm in the XY direction. The purpose of arranging multiple positioning holes on the substrate is to facilitate the rapid arrangement of various detection point inspection fixtures on the substrate during detection for pipelines with different shapes, undulations, and directions. The positioning holes are processed into through holes, and the arc-shaped side walls at the lower end of the connecting shaft of the height column at the lowest end are provided with external threads. This connecting shaft is matched and inserted into the positioning hole and is fixed by screwing the external threads exposed at the lower end of the positioning hole and the nut to fix the height column on the lower end surface of the substrate. The arc portion of the horizontal cross-section of the connecting shaft is an arc larger than the semicircle to ensure that the nut can be threaded to fix the lower end of the connecting shaft, and prevent loosening due to too small an area for threaded fixing due to the large missing part of the connecting shaft. In order to ensure firmness, glue can be applied to the threads of the connecting shaft for further fixing.

[0016] Furthermore, the connecting shaft of the height column at the lowest end is made of magnetic material, the base plate includes a magnetic device, the magnetic device is accommodated inside the base plate, and the connecting shaft of the height column at the lowest end is limitedly inserted into the positioning hole of the base plate and is magnetically fixed with the corresponding magnetic device.

[0017] The lower end of the height column of the utility model can also be made of magnetic material, and a magnetic attraction device is arranged inside the base plate. The bottom surface of the height column is fixedly connected to the upper end surface of the base plate by magnetic attraction, which makes it more convenient to install the pipeline inspection fixture at different detection positions.

[0018] Furthermore, the magnetic attraction device of the substrate is a strong magnet.

[0019] The magnetic attraction device in the substrate can be a strong magnet. A neodymium magnet can be selected, which has a relatively large magnetic attraction force and can magnetically attract and fix the height column of the pipeline fixture on the substrate to ensure the detection quality.

[0020] Furthermore, the magnetic attraction device of the substrate is an electromagnet.

[0021] The magnetic attraction device of the substrate can also be an electromagnet. After being energized, a strong magnetic force will be generated to magnetically attract and fix the height column on the substrate.

[0022] Furthermore, the positioning hole is a blind hole, and the bottom end of the connecting shaft of the height column at the lowermost end is magnetically attracted and limited and fixed in the positioning hole.

[0023] The positioning hole is machined into a blind hole. The lower end of the connecting shaft of the height column at the lowermost end is matched and limitedly inserted into the blind hole. The connecting shaft is fixed in the vertical direction by the magnetic attraction device and is limited in the horizontal circumferential direction by the limiting blind hole. This ensures that the height column will not shift in any direction during the detection process and guarantees the accuracy of the detection.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] 1. The utility model adopts a split design of the detection block and the substrate, which greatly reduces the processing cost of the fixture.

[0026] 2. In the utility model, the support columns of the detection block are formed by mutually limited insertion of a plurality of height columns with different sizes, and the height of the support columns can be arbitrarily adjusted according to actual needs, improving the versatility of the support columns, saving processing costs and processing time.

[0027] 3. The detection component of the detection block in the utility model is inserted into the top end of the height column, making the detection component easy to disassemble, and enabling quick replacement of the new detection component after the pipeline product is modified.

[0028] 4. The detection block and the substrate of the utility model can also adopt a magnetic attraction type of fixing method, making it easier to install the pipeline product according to the undulating trend of the pipeline product at each detection point; after the pipeline product is modified, it will not be scrapped as a whole, saving costs.

[0029] 5. The multiple height columns and gaskets of the utility model can be prepared in advance by different specifications for processing, realizing rapid assembly and production of the fixture, and greatly shortening the production cycle of the fixture. Description of the Drawings

[0030] Figure 1 It is a schematic diagram of the overall structure of the utility model without a magnetic attraction device;

[0031] Figure 2Schematic diagram of the overall structure of the detection block of the present utility model;

[0032] Figure 3 Schematic diagram of the detailed structure of each component of the detection block of the present utility model;

[0033] Figure 4 Schematic diagram of the overall structure of the detection block of the present utility model which only includes one height column and one gasket;

[0034] Figure 5 Schematic diagram of the structure of the height column of the present utility model;

[0035] Figure 6 Schematic diagram of the structure of the detection component of the present utility model;

[0036] Figure 7 Schematic diagram of the overall structure of the present utility model with a magnetic attraction device;

[0037] In the figure:

[0038] 1. Detection block; 1.1. Support column; 1.2. Detection component; 1.21. U-shaped groove; 1.22. Connecting column; 1.3. Height column; 1.31. Columnar connecting part; 1.32. Connecting shaft; 1.33. Insertion hole; 1.4. Gasket; 2. Substrate; 2.1. Positioning hole; 2.2. Magnetic attraction device. Detailed implementation manners

[0039] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0040] The terms used in the present utility model are only for the purpose of describing specific embodiments, and are not intended to limit the present utility model. The singular forms of "a", "the" and "said" used in the present utility model and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Plural" generally includes at least two.

[0041] It should be noted that the orientation or positional relationship indicated by the terms "front", "rear", "inner", "outer", etc. in the present utility model is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0042] It should be particularly noted that any symbols and / or numbers in the specification that are not marked in the accompanying drawings are not drawing marks.

[0043] The embodiment provided by the utility model, that is, an embodiment of a pipeline inspection tool, is described below in combination with Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 Provide detailed explanation.

[0044] Embodiment 1:

[0045] See Figure 1 As shown, a pipeline inspection fixture includes multiple inspection blocks 1 and a base plate 2. Each inspection block 1 includes an adjustable height support column 1.1 and a detection component 1.2. The detection component 1.2 can be limitedly inserted into the top end of the support column 1.1, and the bottom end of the support column 1.1 can be fixedly connected to the base plate 2.

[0046] See Figure 4 and Figure 5 As shown, the support column 1.1 includes a height column 1.3, and the height column 1.3 includes a columnar connecting portion 1.31 and a connecting shaft 1.32. The connecting shaft 1.32 is coaxially arranged at the center of the lower end surface of the columnar connecting portion 1.31, and a plug-in hole 1.33 is coaxially arranged at the center of the upper end surface of the columnar connecting portion 1.31. The connecting shaft 1.32 is a cylinder, and a plane limiting missing portion is provided on the side wall of the cylinder. The horizontal cross-sectional shape of the corresponding plug-in hole 1.33 is the same as the horizontal cross-sectional shape of the connecting shaft 1.32. The plug-in hole 1.33 at the upper end of the height column 1.3 is aligned and limitedly engaged with the lower end of the detection component 1.2, and the connecting shaft 1.32 at the lower end of the height column 1.3 is fixedly connected to the substrate 2.

[0047] The support column 1.1 further comprises a gasket 1.4, a through hole is arranged at the center of the gasket 1.4, and the gasket 1.4 is sleeved on the corresponding connecting shaft 1.32 through the through hole.

[0048] See Figure 6 As shown, the upper end of the detection component 1.2 is a block structure with a U-shaped groove 1.21 opening upward, and the lower end face of the detection component 1.2 is provided with a connecting column 1.22, which can be matched and limitedly inserted into the plug hole 1.33 of the adjacent height column 1.3.

[0049] A plurality of positioning holes 2.1 are evenly arranged on the substrate 2. The horizontal cross-sectional shape of each positioning hole 2.1 is the same as that of the connecting shaft 1.32. The connecting shaft 1.32 of the height column 1.3 at the lowermost end can be limited and inserted into the positioning hole 2.1, and its lower end protrudes outside the lower end surface of the substrate 2. External threads are provided on the arc-shaped side wall at the lower end of the connecting shaft 1.32. The lowermost height column 1.3 is fixed to the lower end surface of the substrate 2 by screwing the connecting shaft 1.32 and a nut.

[0050] Embodiment 2:

[0051] See Figure 1 As shown, a pipeline inspection tool includes a plurality of detection blocks 1 and a substrate 2. Each detection block 1 includes a support column 1.1 with adjustable height and a detection component 1.2. The detection component 1.2 can be limited and inserted into the top end of the support column 1.1, and the bottom end of the support column 1.1 can be fixedly connected to the substrate 2.

[0052] See Figure 2 、 Figure 3 And Figure 5 As shown, the support column 1.1 includes more than two height columns 1.3. Each height column 1.3 includes a columnar connecting portion 1.31 and a connecting shaft 1.32. The connecting shaft 1.32 is coaxially arranged at the center of the lower end surface of the columnar connecting portion 1.31. A socket hole 1.33 is coaxially provided at the center of the upper end surface of each columnar connecting portion 1.31. Each connecting shaft 1.32 is a cylinder, and a planar limit missing portion is provided on the side wall of the cylinder. The horizontal cross-sectional shape of the corresponding socket hole 1.33 is the same as that of the connecting shaft 1.32. The two adjacent height columns 1.3 are limited and inserted into each other, and the connecting shaft 1.32 can be matched and limited and inserted into the socket hole 1.33 of the adjacent other height column 1.3. The socket hole 1.33 at the upper end of the uppermost height column 1.3 is aligned and limited and inserted into the lower end of the detection component 1.2, and the connecting shaft 1.32 at the lower end of the lowermost height column 1.3 is fixedly connected to the substrate 2.

[0053] The support column 1.1 further includes three gaskets 1.4. A through hole is provided at the center of each gasket 1.4, and the gasket 1.4 is sleeved on the corresponding connecting shaft 1.32 through the through hole.

[0054] See Figure 6 As shown, the upper end of the detection component 1.2 is a block structure with a U-shaped groove 1.21 opening upward. A connecting column 1.22 is provided on the lower end surface of the detection component 1.2, and the connecting column 1.22 can be matched and limited and inserted into the socket hole 1.33 of the adjacent height column 1.3.

[0055] A plurality of positioning holes 2.1 are evenly arranged on the base plate 2, and the horizontal cross-sectional shape of each positioning hole 2.1 is the same as the horizontal cross-sectional shape of the connecting shaft 1.32. The connecting shaft 1.32 of the height column 1.3 at the lowest end can be limitedly inserted into the positioning hole 2.1 and its lower end is exposed outside the lower end surface of the base plate 2. An external thread is provided on the arc-shaped side wall at the lower end of the connecting shaft 1.32, and the lowest height column 1.3 is screwed and fixed to the lower end surface of the base plate 2 by the connecting shaft 1.32 and a nut.

[0056] Embodiment 3:

[0057] See Figure 1 As shown, a pipeline inspection fixture includes multiple inspection blocks 1 and a base plate 2. Each inspection block 1 includes an adjustable height support column 1.1 and a detection component 1.2. The detection component 1.2 can be limitedly inserted into the top end of the support column 1.1, and the bottom end of the support column 1.1 can be fixedly connected to the base plate 2.

[0058] See Figure 2 , Figure 3 and Figure 5 As shown, the support column 1.1 includes more than two height columns 1.3, each height column 1.3 includes a columnar connecting portion 1.31 and a connecting shaft 1.32, the connecting shaft 1.32 is coaxially arranged at the center of the lower end surface of the columnar connecting portion 1.31, and a plug-in hole 1.33 is coaxially arranged at the center of the upper end surface of each columnar connecting portion 1.31. Each connecting shaft 1.32 is a cylinder, and the side wall of the cylinder is provided with a plane limiting missing portion, and the horizontal cross-sectional shape of the corresponding plug-in hole 1.33 is the same as the horizontal cross-sectional shape of the connecting shaft 1.32. The height columns 1.3 adjacent to each other are limitedly plugged into each other, and the connecting shaft 1.32 can be matched and limitedly plugged into the plug-in hole 1.33 of another adjacent height column 1.3, the plug-in hole 1.33 at the upper end of the uppermost height column 1.3 is aligned and limitedly plugged into the lower end of the detection component 1.2, and the connecting shaft 1.32 at the lower end of the lowermost height column 1.3 is fixedly connected to the substrate 2.

[0059] The support column 1.1 further comprises three gaskets 1.4. A through hole is provided at the center of each gasket 1.4, and the gasket 1.4 is sleeved on the corresponding connecting shaft 1.32 through the through hole.

[0060] See Figure 6 As shown, the upper end of the detection component 1.2 is a block structure with a U-shaped groove 1.21 opening upward, and the lower end face of the detection component 1.2 is provided with a connecting column 1.22, which can be matched and limitedly inserted into the plug hole 1.33 of the adjacent height column 1.3.

[0061] See Figure 7As shown, a plurality of positioning holes 2.1 are uniformly arranged on the substrate 2. The horizontal cross-sectional shape of each positioning hole 2.1 is the same as that of the connecting shaft 1.32. The connecting shaft 1.32 of the height post 1.3 at the lowermost end can be limited and inserted into the positioning hole 2.1, and its lower end is exposed outside the lower end surface of the substrate 2. An external thread is provided on the arc-shaped side wall at the lower end of the connecting shaft 1.32. The lowermost height post 1.3 is fixed to the lower end surface of the substrate 2 by screwing the connecting shaft 1.32 and a nut.

[0062] The connecting shaft 1.32 of the height post 1.3 at the lowermost end is made of a magnetic material. The substrate 2 includes a magnetic attraction device 2.2. The magnetic attraction device 2.2 is accommodated inside the substrate 2. The connecting shaft 1.32 of the lowermost height post 1.3 is limited and inserted into the positioning hole 2.1 of the substrate 2 and magnetically fixed to the corresponding magnetic attraction device 2.2.

[0063] The magnetic attraction device 2.2 of the substrate 2 is a strong magnet.

[0064] Embodiment 4:

[0065] See Figure 1 As shown, a pipeline inspection tool includes a plurality of detection blocks 1 and a substrate 2. Each detection block 1 includes a support post 1.1 with adjustable height and a detection component 1.2. The detection component 1.2 can be limited and inserted into the top end of the support post 1.1, and the bottom end of the support post 1.1 can be fixedly connected to the substrate 2.

[0066] See Figure 2 、 Figure 3 and Figure 5 As shown, the support post 1.1 includes more than two height posts 1.3. Each height post 1.3 includes a columnar connection part 1.31 and a connecting shaft 1.32. The connecting shaft 1.32 is coaxially arranged at the center of the lower end surface of the columnar connection part 1.31. A plug hole 1.33 is coaxially provided at the center of the upper end surface of each columnar connection part 1.31. Each connecting shaft 1.32 is a cylinder, and a planar limit missing part is provided on the side wall of the cylinder. The horizontal cross-sectional shape of the corresponding plug hole 1.33 is the same as that of the connecting shaft 1.32. The two adjacent height posts 1.3 are limited and inserted into each other, and the connecting shaft 1.32 can be matched and limited and inserted into the plug hole 1.33 of the adjacent other height post 1.3. The plug hole 1.33 at the upper end of the uppermost height post 1.3 is aligned and limited and inserted into the lower end of the detection component 1.2, and the connecting shaft 1.32 at the lower end of the lowermost height post 1.3 is fixedly connected to the substrate 2.

[0067] The support post 1.1 further includes three gaskets 1.4. A through hole is provided at the center of each gasket 1.4, and the gasket 1.4 is sleeved on the corresponding connecting shaft 1.32 through the through hole.

[0068] See Figure 6As shown in the figure, the upper end of the detection component 1.2 is a block structure provided with a U-shaped groove 1.21 with an upward opening. The lower end surface of the detection component 1.2 is provided with a connecting column 1.22, and the connecting column 1.22 can be matched and limitedly inserted into the insertion hole 1.33 of the adjacent height column 1.3.

[0069] See Figure 7 As shown in the figure, a plurality of positioning holes 2.1 are uniformly arranged on the substrate 2. The horizontal cross-sectional shape of each positioning hole 2.1 is the same as the horizontal cross-sectional shape of the connecting shaft 1.32. The connecting shaft 1.32 of the height column 1.3 at the lowermost end can be limitedly inserted into the positioning hole 2.1 and its lower end is exposed outside the lower end surface of the substrate 2. External threads are provided on the arc-shaped side wall at the lower end of the connecting shaft 1.32. The lowermost height column 1.3 is fixed to the lower end surface of the substrate 2 by screwing the connecting shaft 1.32 and a nut.

[0070] The connecting shaft 1.32 of the height column 1.3 at the lowermost end is made of a magnetic material. The substrate 2 includes a magnetic attraction device 2.2. The magnetic attraction device 2.2 is accommodated inside the substrate 2. The connecting shaft 1.32 of the height column 1.3 at the lowermost end is limitedly inserted into the positioning hole 2.1 of the substrate 2 and magnetically fixed to the corresponding magnetic attraction device 2.2.

[0071] The magnetic attraction device 2.2 of the substrate 2 is an electromagnet.

[0072] The positioning hole 2.1 is a blind hole, and the bottom end of the connecting shaft 1.32 of the height column 1.3 at the lowermost end is magnetically limited and fixed in the positioning hole 2.1.

[0073] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pipeline inspection fixture, characterized in that: The invention comprises a plurality of detection blocks (1) and a base plate (2), each of the detection blocks (1) comprising a support column (1.1) with adjustable height and a detection component (1.2), the detection component (1.2) being insertable at the top end of the support column (1.1) in a limited position, the bottom end of the support column (1.1) being fixedly connected to the base plate (2), the support column (1.1) comprising at least one height column (1.3), each of the height columns (1.3) comprising a columnar connecting portion (1.31) and a connecting shaft (1.32), the connecting shaft (1.32) being coaxially arranged at the center of the lower end surface of the columnar connecting portion (1.31), a plug hole (1.33) being coaxially arranged at the center of the upper end surface of each of the columnar connecting portions (1.31), and each of the connecting portions (1.31) being provided with a plug hole (1.33) coaxially at the center of the upper end surface of each of the connecting portions (1.31). The shaft (1.32) is a cylinder, and a plane limiting missing portion is provided on the side wall of the cylinder. The horizontal cross-sectional shape of the corresponding plug-in hole (1.33) is the same as the horizontal cross-sectional shape of the connecting shaft (1.32). The plug-in hole (1.33) at the upper end of the uppermost height column (1.3) is aligned and limitedly plugged into the detection component (1.2). The connecting shaft (1.32) at the lower end of the lowermost height column (1.3) is fixedly connected to the base plate (2). The upper end of the detection component (1.2) is a block structure provided with a U-shaped groove (1.21) opening upward. The lower end surface of the detection component (1.2) is provided with a connecting column (1.22). The connecting column (1.22) can be matched and limitedly plugged into the plug-in hole (1.33) of the adjacent height column (1.3).

2. The pipeline inspection fixture according to claim 1, characterized in that: The support column (1.1) comprises more than two height columns (1.3), and the height columns (1.3) adjacent to each other in pairs are inserted into each other in a limited position, and the connecting shaft (1.32) can be matched and inserted into the insertion hole (1.33) of another adjacent height column (1.3).

3. The pipeline inspection fixture according to claim 2, characterized in that: The support column (1.1) also includes at least one gasket (1.4), each gasket (1.4) being provided with a through hole at the center thereof, and the gasket (1.4) being sleeved on a corresponding connecting shaft (1.32) through the through hole.

4. The pipeline inspection fixture according to claim 3, characterized in that: A plurality of positioning holes (2.1) are evenly arranged on the base plate (2); the horizontal cross-sectional shape of each positioning hole (2.1) is the same as the horizontal cross-sectional shape of the connecting shaft (1.32); the connecting shaft (1.32) of the height column (1.3) at the lowest end can be inserted into the positioning hole (2.1) with its lower end exposed outside the lower end surface of the base plate (2); an external thread is provided on the arc-shaped side wall at the lower end of the connecting shaft (1.32); and the height column (1.3) at the lowest end is fixed to the lower end surface of the base plate (2) by screwing the connecting shaft (1.32) and a nut.

5. The pipeline inspection fixture according to claim 4, characterized in that: The connecting shaft (1.32) of the height column (1.3) at the bottom is made of magnetic material, the base plate (2) comprises a magnetic attraction device (2.2), the magnetic attraction device (2.2) is accommodated inside the base plate (2), and the connecting shaft (1.32) of the height column (1.3) at the bottom is limitedly inserted into the positioning hole (2.1) of the base plate (2) and is magnetically fixed with the aligned magnetic attraction device (2.2).

6. The pipeline inspection fixture according to claim 5, characterized in that: The magnetic attraction device (2.2) of the substrate (2) is a strong magnet.

7. The pipeline inspection fixture according to claim 5, characterized in that: The magnetic attraction device (2.2) of the substrate (2) is an electromagnet.

8. The pipeline inspection fixture according to claim 6 or 7, characterized in that: The positioning hole (2.1) is a blind hole, and the bottom end of the connecting shaft (1.32) of the height column (1.3) located at the bottom is magnetically fixed in the positioning hole (2.1).

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