Rectangular steel pipe surface flatness detection tool

Abstract

The utility model discloses a kind of rectangular steel pipe surface flatness detection tool, including bottom plate, positioning plate, detection mechanism and limiting component, positioning plate and limiting component are parallel and interval arrangement, rectangular steel pipe is pasted with positioning plate side surface on bottom plate, positioning plate is used to position rectangular steel pipe;Detection mechanism is set on limiting component and with rectangular steel pipe side surface abut, detection mechanism is left and right sliding on limiting component to judge rectangular steel pipe surface flatness;By setting positioning plate on bottom plate to position steel pipe, and setting detection mechanism and limiting component, limiting component is parallel with positioning plate and interval arrangement, detection mechanism can be left and right sliding on limiting component, the end of the measuring rod of dial gauge in detection mechanism and rectangular steel pipe side surface abut, with the sliding of sliding plate in detection mechanism, the numerical change of dial gauge can be observed, to judge rectangular steel pipe surface flatness, detection device overall structure is simple, detection structure is accurate.

Description

Technical Field

[0001] This utility model belongs to the field of rectangular steel pipe testing technology, specifically relating to a tooling for testing the surface flatness of rectangular steel pipes. Background Technology

[0002] Rectangular steel pipes have a rectangular cross-section, and their flatness needs to be checked during processing. Traditional inspection methods involve using a straightedge or level, but the results are inaccurate and it is difficult to detect minute changes on the surface, thus hindering further improvement in product quality. Therefore, a precise and sensitive inspection device is needed to accurately detect the flatness of the sides of rectangular steel pipes, thereby ensuring the quality of product delivery. Utility Model Content

[0003] The purpose of this utility model is to provide a fixture for testing the surface flatness of rectangular steel pipes. The fixture positions the steel pipe by setting a positioning plate on the base plate, and sets a testing mechanism and a limiting component. The limiting component is parallel to the positioning plate and is set at intervals. The testing mechanism can slide left and right on the limiting component. The end of the dial indicator in the testing mechanism abuts against the side of the rectangular steel pipe. As the sliding plate in the testing mechanism slides, the change of the dial indicator value can be observed to determine the surface flatness of the rectangular steel pipe.

[0004] This utility model is achieved through the following technical solution: A fixture for detecting the surface flatness of a rectangular steel pipe includes a base plate, a positioning plate, a detection mechanism, and a limiting component. The positioning plate, detection mechanism, and limiting component are all mounted on the base plate. The positioning plate and limiting component are parallel and spaced apart. The rectangular steel pipe is attached to the side of the positioning plate on the base plate, and the positioning plate is used to position the rectangular steel pipe. The detection mechanism is mounted on the limiting component and abuts against the side of the rectangular steel pipe. The detection mechanism slides left and right on the limiting component to determine the surface flatness of the rectangular steel pipe.

[0005] Preferably, the testing mechanism includes a sliding plate, a dial indicator, and a fixing component. The end of the sliding plate abuts against the side of the rectangular steel tube, and the sliding plate is connected to and slides on the limiting component. The dial indicator is disposed at the end of the sliding plate, and the end of the measuring rod of the dial indicator abuts against the surface of the rectangular steel tube. The fixing component is disposed on the sliding plate and connected to the middle of the measuring rod to fix the dial indicator.

[0006] Preferably, the end of the sliding plate is provided with an abutment surface, the width of the abutment surface is less than the width of the sliding plate, and there are two spaced protrusions on the abutment surface. The surface of the protrusions is an arc-shaped curved surface, and the protrusions abut against the side of the rectangular steel pipe.

[0007] Preferably, the fixing assembly includes a fixing bolt and a clamping member. The clamping member includes a first clamping arm and a second clamping arm. The fixing bolt is connected to a sliding plate. The first clamping arm is connected to the fixing bolt and keeps the second clamping arm at the same height as the measuring rod. The second clamping arm is used to clamp the measuring rod.

[0008] Preferably, the first clamping arm is provided with a first elastic groove and a first locking bolt. The first elastic groove is arranged longitudinally in the first clamping arm. The front and rear side walls of the first elastic groove are provided with mutually symmetrical first clearance openings. The first clamping arm is sleeved on the fixing bolt through the first clearance opening. The first locking bolt is located at the end of the first clamping arm and is used to make the first clamping arm clamp the fixing bolt.

[0009] Preferably, the second clamping arm is provided with a second elastic groove and a second locking bolt. The second elastic groove is arranged laterally in the second clamping arm. The upper and lower side walls of the second elastic groove are provided with mutually symmetrical second clearance openings. The second clamping arm is sleeved on the measuring rod through the second clearance openings. The second locking bolt is located at the end of the second clamping arm. The second locking bolt is used to make the second clamping arm clamp the measuring rod.

[0010] Preferably, the limiting component includes two parallel support blocks, and the bottom of the sliding plate is provided with two corresponding sliding grooves. The sliding grooves cooperate with the support blocks to make the sliding plate slide smoothly on the two support blocks.

[0011] Compared with the prior art, this utility model has the following advantages and beneficial effects: 1) In this utility model, a positioning plate is set on the base plate to position the steel pipe, and a detection mechanism and a limiting component are set. The limiting component is parallel to the positioning plate and is set at intervals. The detection mechanism can slide left and right on the limiting component. The end of the dial indicator rod in the detection mechanism abuts against the side of the rectangular steel pipe. As the sliding plate in the detection mechanism slides, the change of the dial indicator value can be observed to determine the flatness of the rectangular steel pipe surface. The detection device has a simple overall structure and accurate detection structure.

[0012] 2) In this utility model, the clamping component includes a first clamping arm and a second clamping arm. The first clamping arm is connected to the second clamping arm and the first clamping arm is connected to the fixing bolt on the sliding plate so that the second clamping arm is kept horizontal with the measuring rod. The second clamping arm clamps and fixes the measuring rod, thereby fixing the dial indicator. The fixing component has a simple and compact structure and is easy to assemble. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the assembly structure of the rectangular steel pipe surface flatness detection fixture of this utility model.

[0015] Figure 2 This is a schematic diagram of the sliding plate in this utility model.

[0016] Figure 3 This is a schematic diagram of the clamping component in this utility model.

[0017] Wherein: 1-base plate, 2-positioning plate, 3-support block, 4-sliding plate, 41-protrusion, 42-threaded hole, 43-slide groove, 5-dial indicator, 51-measuring rod, 6-clamping component, 61-first clamping arm, 611-first elastic groove, 612-first clearance opening, 613-first locking bolt, 62-second clamping arm, 621-second elastic groove, 622-second clearance opening, 623-second locking bolt, 7-fixing bolt. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0019] Example 1: A fixture for inspecting the surface flatness of rectangular steel pipes, such as Figure 1 and Figure 2 As shown, the device includes a base plate 1, a positioning plate 2, a detection mechanism, and a limiting component. The positioning plate 2, the detection mechanism, and the limiting component are all mounted on the base plate 1. The positioning plate 2 is a rectangular plate-shaped structure. The positioning plate 2 and the limiting component are parallel and spaced apart. A rectangular steel pipe is attached to the side of the positioning plate 2 on the base plate 1. The positioning plate 2 is used to position the rectangular steel pipe. The narrow side of the rectangular steel pipe abuts against the base plate 1, and the wide side of the rectangular steel pipe abuts against the side of the positioning plate 2. The detection mechanism is mounted on the limiting component and abuts against the side of the rectangular steel pipe. The detection mechanism slides left and right on the limiting component to determine the flatness of the rectangular steel pipe surface.

[0020] The testing mechanism includes a sliding plate 4, a dial indicator 5, and a fixing component. The end of the sliding plate 4 abuts against the side of the rectangular steel pipe. The sliding plate 4 is connected to the limiting component and slides on the limiting component. The limiting component includes two parallel support blocks 3. The bottom of the sliding plate 4 is provided with two corresponding sliding grooves 43. The sliding grooves 43 cooperate with the support blocks 3 to make the sliding plate 4 slide smoothly on the two support blocks 3. In the actual measurement process, a batch of rectangular steel pipes of the same model have the same thickness. Therefore, the support blocks 3 can be fixed to the base plate 1 by spot welding so that the sliding plate 4 just abuts against the surface of the rectangular steel pipe and can slide, so that the position of the sliding plate 4 remains stable. During the actual measurement process, a small amount of lubricating oil can be applied to assist the sliding plate 4 in sliding on the side of the rectangular steel pipe. The dial indicator 5 is located at the end of the sliding plate 4. The end of the measuring rod 51 of the dial indicator 5 abuts against the surface of the rectangular steel tube. The fixing component is located on the sliding plate 4 and connected to the middle of the measuring rod 51 to fix the dial indicator 5. The measuring rod 51 has a two-section structure, including a fixed section and a movable section. The movable section is inserted into the fixed section. The fixed section is connected to the housing of the dial indicator 5. The fixing component is connected to the fixed section of the measuring rod 51. The movable section of the measuring rod 51 abuts against the side of the rectangular steel tube. The specific structure of the dial indicator 5 can be referred to in the prior art, and will not be described in detail here. A contact surface is provided at the end of the sliding plate 4. The width of the contact surface is smaller than the width of the sliding plate 4. The end of the sliding plate 4 has a trapezoidal structure. Two spaced protrusions 41 are welded on the contact surface. The surface of the end of the protrusion 41 has an arc-shaped curved surface structure. The protrusion 41 abuts against the side of the rectangular steel pipe. The structure of the end of the protrusion 41 can reduce the friction between the protrusion and the rectangular steel pipe, which facilitates the movement of the sliding plate 4. When inspecting the surface of the rectangular steel pipe, the measuring rod 51 of the dial indicator 5 and the protrusions 41 of the sliding plate 4 abut against the side of the rectangular steel pipe. Push the sliding plate 4 to make the dial indicator 5 slide along the side of the rectangular steel pipe. Observe whether the value fluctuation of the dial indicator 5 exceeds the upper and lower limits. If it exceeds the upper and lower limits, it means that the surface flatness of the rectangular steel pipe does not meet the standard.

[0021] Example 2: This embodiment, based on the above embodiments, further defines the fixing component, such as... Figure 1 and Figure 3 As shown, the fixing assembly includes a fixing bolt 7 and a clamping member 6. The clamping member 6 includes a first clamping arm 61 and a second clamping arm 62. The first clamping arm 61 and the second clamping arm 62 are connected. The sliding plate 4 is provided with a threaded hole 42. The fixing bolt 7 is threadedly connected to the threaded hole 42 of the sliding plate 4. The fixing bolt 7 is located on the side of the dial indicator 5. The first clamping arm 61 is connected to the fixing bolt 7 and keeps the second clamping arm 62 at the same height as the measuring rod 51. The second clamping arm 62 is used to clamp the measuring rod 51.

[0022] The first clamping arm 61 is provided with a first elastic groove 611 and a first locking bolt 613. The first elastic groove 611 is arranged longitudinally in the first clamping arm 61. The middle part of the first elastic groove 611 is provided with symmetrical first clearance openings 612 on the front and rear side walls. The first clamping arm 61 is sleeved on the fixing bolt 7 through the first clearance openings 612. The fixing bolt 7 passes through the two oppositely arranged first clearance openings 612 in the first elastic groove 611 and is connected to the sliding plate 4. The first locking bolt 613 is provided at the end of the first clamping arm 61. The first locking bolt 613 makes the two sides of the first clamping arm 61 move closer to each other and clamp the fixing bolt 7.

[0023] The second clamping arm 62 is provided with a second elastic groove 621 and a second locking bolt 623. The second elastic groove 621 is arranged laterally in the second clamping arm 62. The middle part of the second elastic groove 621 has symmetrical second clearance openings 622 on the upper and lower side walls. The second clamping arm 62 is sleeved on the measuring rod 51 through the second clearance openings 622. The measuring rod 51 of the dial indicator 5 passes through the two oppositely arranged second clearance openings 622 in the second elastic groove 621 and abuts against the side of the rectangular steel tube. The second locking bolt 623 is located at the end of the second clamping arm 62. The second locking bolt 623 is used to bring the two sides of the second clamping arm 62 closer together to clamp the measuring rod 51. The other parts of this embodiment are the same as those in the above embodiment, and will not be described again here.

[0024] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" used to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to 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.

[0025] Furthermore, the use of terms such as "horizontal" or "vertical" in the description of this utility model does not imply that the component is required to be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A fixture for inspecting the surface flatness of rectangular steel pipes, characterized in that, The device includes a base plate, a positioning plate, a detection mechanism, and a limiting component. The positioning plate, detection mechanism, and limiting component are all mounted on the base plate. The positioning plate and the limiting component are parallel and spaced apart. The rectangular steel pipe is attached to the side of the positioning plate on the base plate. The positioning plate is used to position the rectangular steel pipe. The detection mechanism is mounted on the limiting component and abuts against the side of the rectangular steel pipe. The detection mechanism slides left and right on the limiting component to determine the flatness of the rectangular steel pipe surface.

2. The fixture for detecting the surface flatness of rectangular steel pipes as described in claim 1, characterized in that, The testing mechanism includes a sliding plate, a dial indicator, and a fixing component. The end of the sliding plate abuts against the side of the rectangular steel tube. The sliding plate is connected to a limiting component and slides on the limiting component. The dial indicator is disposed at the end of the sliding plate, and the end of the measuring rod of the dial indicator abuts against the surface of the rectangular steel tube. The fixing component is disposed on the sliding plate and connected to the middle of the measuring rod to fix the dial indicator.

3. The fixture for detecting the surface flatness of rectangular steel pipes as described in claim 2, characterized in that, The sliding plate has an abutment surface at its end. The width of the abutment surface is smaller than the width of the sliding plate. There are two spaced protrusions on the abutment surface. The surface of the protrusions is an arc-shaped curved surface. The protrusions abut against the side of the rectangular steel pipe.

4. The fixture for detecting the surface flatness of rectangular steel pipes as described in claim 2, characterized in that, The fixing assembly includes a fixing bolt and a clamping member. The clamping member includes a first clamping arm and a second clamping arm. The fixing bolt is connected to a sliding plate. The first clamping arm is connected to the fixing bolt and keeps the second clamping arm at the same height as the measuring rod. The second clamping arm is used to clamp the measuring rod.

5. The fixture for detecting the surface flatness of rectangular steel pipes as described in claim 4, characterized in that, The first clamping arm is provided with a first elastic groove and a first locking bolt. The first elastic groove is arranged longitudinally in the first clamping arm. The front and rear side walls of the first elastic groove are provided with mutually symmetrical first clearance openings. The first clamping arm is sleeved on the fixing bolt through the first clearance opening. The first locking bolt is located at the end of the first clamping arm. The first locking bolt is used to make the first clamping arm clamp the fixing bolt.

6. The fixture for detecting the surface flatness of rectangular steel pipes as described in claim 4, characterized in that, The second clamping arm is provided with a second elastic groove and a second locking bolt. The second elastic groove is arranged horizontally in the second clamping arm. The upper and lower side walls of the second elastic groove are provided with mutually symmetrical second clearance openings. The second clamping arm is sleeved on the measuring rod through the second clearance openings. The second locking bolt is located at the end of the second clamping arm. The second locking bolt is used to make the second clamping arm clamp the measuring rod.

7. The fixture for detecting the surface flatness of rectangular steel pipes as described in claim 2, characterized in that, The limiting component includes two parallel support blocks, and the bottom of the sliding plate is provided with two corresponding sliding grooves. The sliding grooves cooperate with the support blocks to make the sliding plate slide smoothly on the two support blocks.

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