Hand-held seamless steel tube extreme value external diameter measuring tool

Abstract

The utility model relates to the technical field of measuring tools, in particular to a handheld measuring tool for the extreme outer diameter of a seamless steel tube. The device comprises a U-shaped frame, a measuring auxiliary assembly is movably arranged in the U-shaped frame, an L-shaped plate is arranged on one side of the U-shaped frame, a locking assembly is arranged on the outer side of the L-shaped plate, an installation groove is formed in the L-shaped plate, and a marking auxiliary plate is arranged in the installation groove. The first jacking spring continuously acts on the sliding block and the top plate, the top plate can be tightly attached to the surfaces of seamless steel pipes with different outer diameters, diameter changes are sensed in real time, meanwhile, the sliding block moves along the precisely-designed sliding groove and the guide column, the oily pen is driven to record on the acrylic transparent drawing board, it is ensured that a marked vertical line accurately corresponds to the extreme value of the outer diameter of the steel pipe, and the marking accuracy is improved. Therefore, measurement data accuracy is guaranteed, and measurement errors are effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of measuring instruments, and in particular to a handheld measuring instrument for measuring the extreme outer diameter of seamless steel pipes. Background Technology

[0002] In the production, manufacturing, quality inspection, and engineering application of seamless steel pipes, accurate measurement of their outer diameter is a crucial step in ensuring product quality and engineering safety.

[0003] Currently, traditional methods for measuring the outer diameter of seamless steel pipes have many drawbacks. Some conventional measuring tools, such as calipers, are inconvenient to operate and have low measurement efficiency when dealing with pipes with large diameters or when continuous measurement is required to obtain extreme outer diameter values, making it difficult to meet the needs of rapid and accurate measurement in actual production and testing. Utility Model Content

[0004] The purpose of this invention is to provide a handheld measuring tool for measuring the extreme outer diameter of seamless steel pipes, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution, which includes a U-shaped frame, a measuring auxiliary component movably disposed within the U-shaped frame, an L-shaped plate disposed on one side of the U-shaped frame, a locking component disposed on the outer side of the L-shaped plate, an installation groove provided on the L-shaped plate, and a marking auxiliary plate disposed within the installation groove.

[0006] As a preferred embodiment of this utility model, the inner walls on both sides of the U-shaped frame are provided with mounting grooves, each mounting groove is provided with a guide post, and each mounting groove is provided with sliding grooves on both sides of the inner walls. The side of the U-shaped frame near the L-shaped plate is provided with a through groove that communicates with the mounting groove.

[0007] As a preferred embodiment of this utility model, the measuring auxiliary component includes a movable block disposed in a mounting groove, sliders symmetrically disposed on both sides of the movable block, the sliders disposed in a sliding groove, a sliding sleeve disposed inside the slider, a guide post disposed inside the sliding sleeve, a top plate disposed between the two movable blocks, wherein a lower clamping sleeve is disposed on the side of the slider near the groove, an upper clamping sleeve is fixed to the lower clamping sleeve by a pair of bolts, an oil-based pen is clamped between the upper and lower clamping sleeves, and the tip of the oil-based pen is flush with the bottom surface of the top plate.

[0008] As a preferred embodiment of this utility model, each of the guide columns is fitted with a top pressure spring on its outer side. The top end of the top pressure spring is located on the inner top surface of the mounting groove, and the bottom end of the top pressure spring is located on the top of the slider.

[0009] As a preferred embodiment of this utility model, a scale mark is provided on one side of the front of the marking auxiliary plate, and an acrylic transparent drawing board is provided on the side of the scale mark. A pair of insertion holes are provided below the scale mark and the acrylic transparent drawing board.

[0010] As a preferred embodiment of this utility model, the locking assembly includes a mounting shell disposed on the back of the L-shaped plate, a pressing plate disposed inside the mounting shell, a pair of corresponding insertion pins disposed on the front of the pressing plate, a pull handle disposed on the back of the pressing plate, the tail of the pull handle being located outside the mounting shell, and several top pressure springs disposed on the back of the pressing plate, the top pressure springs being abutted between the pressing plate and the inner wall of the mounting shell.

[0011] As a preferred embodiment of this utility model, a pad is provided on the inner bottom surface of the U-shaped frame, a handle is provided on one side of the U-shaped frame, and a handle is provided on the bottom of the U-shaped frame.

[0012] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0013] 1. This utility model uses a top-pressure spring to continuously act on the slider and the top plate. The top plate can closely fit the surface of seamless steel pipes with different outer diameters and sense the diameter changes in real time. At the same time, the slider moves along the precisely designed slide groove 11 and guide column, driving the oil-based pen to record on the acrylic transparent drawing board, ensuring that the marked vertical line accurately corresponds to the extreme value of the outer diameter of the steel pipe, thereby ensuring the accuracy of the measurement data and effectively reducing measurement errors.

[0014] 2. When using this utility model, the measuring personnel only need to hold handle one and handle two with both hands to easily move the measuring tool along the outer wall of the steel pipe to complete the measurement. The marking auxiliary plate can be quickly installed and removed through the pull handle and locking component, which is convenient for replacement or adjustment in different measurement scenarios. The whole operation process is simple and easy to understand, and no complicated training is required to get started, thus improving work efficiency.

[0015] 3. This utility model can adapt to the measurement of seamless steel pipes of different diameters and specifications. It can play a role in both quality inspection on the production line and pipe acceptance on the construction site. It has a wide range of applications and provides a practical measuring tool for seamless steel pipe-related work. Attached Figure Description

[0016] Figure 1 This is a structural diagram of the present invention when it is integrally mounted on a seamless steel pipe;

[0017] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the measurement auxiliary component structure of this utility model;

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0020] Figure 5 This is a schematic diagram of the U-shaped frame and locking components of this utility model during assembly;

[0021] Figure 6 This is a schematic diagram of the U-shaped frame structure of this utility model;

[0022] Figure 7 This is a schematic diagram of the locking component structure of this utility model;

[0023] Figure 8 This is a schematic diagram of the marking auxiliary plate structure of this utility model.

[0024] Reference numerals: U-shaped frame 1, mounting groove 10, sliding groove 11, guide post 12, through groove 13, handle one 14, handle two 15, L-shaped plate 16, mounting groove 17, top pressure spring one 18, measuring auxiliary component 2, moving block 20, slider 21, sliding sleeve 22, top plate 23, lower clamp 24, upper clamp 25, bolt group 26, oil-based pen 27, pad 3, locking component 4, mounting shell 40, extrusion plate 41, pull handle 42, insertion post 43, top pressure spring two 44, marking auxiliary plate 5, scale mark 50, insertion hole 51, acrylic transparent drawing board 52. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0026] like Figures 1-8 As shown, the present invention proposes a handheld seamless steel pipe extreme outer diameter measuring tool, which mainly consists of a U-shaped frame 1, a measuring auxiliary component 2, an L-shaped plate 16, a locking component 4, and a marking auxiliary plate 5.

[0027] The U-shaped frame 1 serves as the basic support structure for the entire measuring instrument. Mounting grooves 10 are provided on both inner walls of the frame. These grooves 10 accommodate parts of the measuring auxiliary component 2, providing them with space to move. Additionally, sliding grooves 11 are provided on both inner walls of each mounting groove 10 to guide the movement of the slider 21 in the measuring auxiliary component 2, ensuring smooth and accurate movement. Guide posts 12 are provided within each mounting groove 10. These guide posts 12 not only provide support and guidance but also cooperate with the sliding sleeve 22 in the measuring auxiliary component 2, further ensuring the linearity of the measuring auxiliary component 2's movement. Furthermore, a through groove 13 communicating with the mounting grooves 10 is provided on the side of the U-shaped frame 1 near the L-shaped plate 16. This through groove 13 is mainly used to facilitate the connection and operation of parts of the measuring auxiliary component 2, such as allowing the lower clamp 24 to connect to the slider 21 through the through groove 13.

[0028] Each guide post 12 is fitted with a top pressure spring 18 on its outer side. The top end of the top pressure spring 18 is tightly set on the inner top surface of the mounting groove 10, and the bottom end is set on the top of the slider 21. This connection method allows the top pressure spring 18 to generate a continuous downward pressure on the slider 21, thereby ensuring that the top plate 23 in the measurement auxiliary component 2 always keeps in contact with the outer surface of the seamless steel pipe, adapting to the measurement needs of seamless steel pipes with different outer diameters.

[0029] The movable block 20 in the measurement auxiliary component 2 is set in the mounting groove 10, and the sliders 21 are symmetrically arranged on both sides. The sliders 21 are embedded in the sliding groove 11. Through this cooperation, the movable block 20 can move smoothly up and down in the mounting groove 10, while limiting its displacement in other directions to ensure the stability of the measurement. The slider 21 is provided with a sliding sleeve 22, and the guide post 12 is just set in the sliding sleeve 22. This connection allows the slider 21 to move stably along the direction of the guide post 12, further improving the accuracy and reliability of the movement of the measurement auxiliary component 2. The two movable blocks 20 are connected by a top plate 23. The top plate 23 directly contacts the outer surface of the seamless steel pipe during the measurement process and transmits information about the change of the outer diameter of the steel pipe.

[0030] A lower clamping sleeve 24 is provided on the side of the slider 21 near the through groove 13. An upper clamping sleeve 25 is fixed to the lower clamping sleeve 24 by a pair of bolt groups 26. By tightening or loosening the bolt groups 26, the clamping force between the upper clamping sleeve 25 and the lower clamping sleeve 24 can be easily adjusted, thereby firmly clamping the oil-based pen 27 and ensuring that the tip of the oil-based pen 27 is flush with the bottom surface of the top plate 23. In this way, during the measurement process, the displacement of the top plate 23 can leave a mark on the marking auxiliary plate 5 accurately through the oil-based pen 27.

[0031] L-shaped plate 16 is set on one side of U-shaped frame 1. The L-shaped plate 16 has a mounting groove 17 for mounting the marking auxiliary plate 5. The marking auxiliary plate 5 can be inserted and removed in the mounting groove 17, which facilitates its installation and removal before and after measurement, while ensuring that the position of the marking auxiliary plate 5 is relatively fixed during the measurement process.

[0032] The mounting shell 40 in the locking assembly 4 is located on the back of the L-shaped plate 16, providing installation space and support for structures such as the extrusion plate 41, inserts 43, top pressure spring 44, and pull handle 42. The extrusion plate 41 is located inside the mounting shell 40, and its front side is provided with a pair of inserts 43 corresponding to the insertion holes 51. When it is necessary to fix the marking auxiliary plate 5, the extrusion plate 41 is moved by operating the pull handle 42, so that the inserts 43 are inserted into the insertion holes 51 below the marking auxiliary plate 5, thereby locking the marking auxiliary plate 5. The pull handle 42 is provided on the back of the extrusion plate 41, and the tail of the pull handle 42 is located on the outside of the mounting shell 40, which is convenient for manual operation by the operator. By pulling or releasing the handle 42, the operator can easily control the movement of the pressing plate 41, thereby locking and unlocking the marking auxiliary plate 5. Several top-pressure springs 44 are also provided on the back of the pressing plate 41. The top-pressure springs 44 are pressed against the inner wall of the mounting shell 40. When the operator releases the handle 42, the elastic force generated by the top-pressure springs 44 pushes the pressing plate 41 forward, so that the insertion post 43 is tightly inserted into the insertion hole 51, ensuring that the marking auxiliary plate 5 is firmly fixed. When the handle 42 is pulled, the top-pressure springs 44 are compressed, and the insertion post 43 is withdrawn from the insertion hole 51, which facilitates the disassembly or replacement of the marking auxiliary plate 5.

[0033] The marking auxiliary plate 5 is connected to the L-shaped plate 16 by inserting into the mounting slot 17. When inserting, it is necessary to ensure that the insertion hole 51 on the marking auxiliary plate 5 corresponds accurately with the insertion post 43 in the locking assembly 4 so as to realize the subsequent locking operation. A scale 50 is provided on one side of the front of the marking auxiliary plate 5, and an acrylic transparent drawing board 52 is provided on the side of the scale 50. The scale 50 is used to read the measurement value, and the acrylic transparent drawing board 52 is used to leave measurement marks with an oil-based pen 27. The two work closely together to facilitate the measurement personnel to intuitively obtain the outer diameter extreme value information of the seamless steel pipe.

[0034] A support pad 3 is provided on the inner bottom surface of the U-shaped frame 1. The support pad 3 adheres to the bottom of the seamless steel pipe during the measurement process, serving to support and stabilize the measuring instrument and prevent it from shaking or shifting. A handle 14 is provided on one side of the U-shaped frame 1. The handle 14 is fixed to the U-shaped frame 1 by welding, bolting, or other methods. The handle 14 makes it convenient for the measuring personnel to hold and move the measuring instrument during the measurement, making the measurement operation more convenient and stable. A handle 25 is provided at the bottom of the U-shaped frame 1. The handle 25 works in conjunction with the handle 14. The measuring personnel can hold the handle 25 with one hand to make the support pad 3 adhere to the bottom of the seamless steel pipe, and hold the handle 14 with the other hand to move the measuring instrument along the outer wall of the seamless steel pipe to measure the outer diameter of the seamless steel pipe.

[0035] In actual operation, the U-shaped frame 1 is accurately fitted onto one end of the seamless steel pipe, ensuring that the top plate 23 of the U-shaped frame 1 is tightly pressed against the outer surface of the seamless steel pipe. Then, the position of the support pad 3 is adjusted so that it fits tightly against the bottom of the seamless steel pipe, further enhancing the stability of the entire measurement structure and avoiding shaking or displacement during the measurement process that could affect the measurement accuracy.

[0036] After completing the above preparations, manually pull the handle 42. At this time, the mechanical structure is unlocked. Insert the bottom of the marking auxiliary plate 5 into the mounting slot 17. Then release the handle 42. Under the action of several top pressure springs 44, the elastic force generated by the springs squeezes the compression plate 41, which in turn pushes several insertion posts 43 into the corresponding insertion holes 51. Thus, the marking auxiliary plate 5 is firmly fixed, providing a reliable marking carrier for subsequent measurements.

[0037] The measurement process officially begins. The measuring personnel must adopt the correct grip posture, firmly holding handle 15 with one hand, so that the pad 3 remains in contact with the bottom of the seamless steel pipe, thereby ensuring the stability of the relative position of the tool and the steel pipe during the measurement process; holding handle 14 with the other hand, moving along the outer wall of the seamless steel pipe at a uniform and slow speed to the other end until reaching the other end of the seamless steel pipe, thus completing a complete measurement stroke.

[0038] During the movement, since there may be differences in diameter in the actual production of seamless steel pipes, the two top pressure springs 18 play a key role. They can adaptively adjust the position of the top plate 23 according to the change in the diameter of the steel pipe, ensuring that the top plate 23 always keeps in contact with the outer surface of the seamless steel pipe. When the top plate 23 shifts up and down due to the change in the diameter of the steel pipe, the slider 21 connected to the top plate 23 will move synchronously. The slider 21 will drive the oil-based pen 27 to leave a clear vertical line mark on the acrylic transparent drawing board 52. This vertical line has important measurement significance. The value corresponding to the highest end of the vertical line is the maximum outer diameter value of the seamless steel pipe, and the value corresponding to the lowest end of the vertical line is the minimum outer diameter value of the seamless steel pipe. The measuring personnel only need to read the extreme values ​​at these two ends and accurately calculate the average diameter value of the seamless steel pipe through simple mathematical calculations.

[0039] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A handheld measuring instrument for measuring the extreme outer diameter of seamless steel pipes, comprising a U-shaped frame (1), characterized in that: A measurement auxiliary component (2) is movably arranged inside the U-shaped frame (1). An L-shaped plate (16) is arranged on one side of the U-shaped frame (1). A locking component (4) is arranged on the outside of the L-shaped plate (16). An installation groove (17) is opened on the L-shaped plate (16). A marking auxiliary plate (5) is arranged in the installation groove (17).

2. The handheld seamless steel pipe extreme outer diameter measuring instrument according to claim 1, characterized in that: The U-shaped frame (1) has mounting grooves (10) on both sides of its inner wall. Each mounting groove (10) has a guide post (12) and a sliding groove (11) on both sides of its inner wall. The U-shaped frame (1) has a through groove (13) that communicates with the mounting groove (10) on the side of the L-shaped plate (16).

3. The handheld seamless steel pipe extreme outer diameter measuring instrument according to claim 2, characterized in that: The measurement auxiliary component (2) includes a movable block (20) disposed in the mounting groove (10). Sliders (21) are symmetrically arranged on both sides of the movable block (20). The sliders (21) are disposed in the sliding groove (11). A sliding sleeve (22) is disposed in the slider (21). The guide post (12) is disposed in the sliding sleeve (22). A top plate (23) is disposed between the two movable blocks (20). A lower clamping sleeve (24) is disposed on the side of the slider (21) near the through groove (13). An upper clamping sleeve (25) is fixed on the lower clamping sleeve (24) by a pair of bolts (26). An oil-based pen (27) is clamped between the upper clamping sleeve (25) and the lower clamping sleeve (24). The tip of the oil-based pen (27) is flush with the bottom surface of the top plate (23).

4. The handheld seamless steel pipe extreme outer diameter measuring instrument according to claim 3, characterized in that: Each of the guide posts (12) is fitted with a top pressure spring (18) on its outer side. The top end of the top pressure spring (18) is set on the inner top surface of the mounting groove (10), and the bottom end of the top pressure spring (18) is set on the top of the slider (21).

5. The handheld seamless steel pipe extreme outer diameter measuring instrument according to claim 4, characterized in that: The marking auxiliary plate (5) has a scale mark (50) on one side of its front, and an acrylic transparent drawing board (52) is provided on the side of the scale mark (50). A pair of holes (51) are provided below the scale mark (50) and the acrylic transparent drawing board (52).

6. The handheld seamless steel pipe extreme outer diameter measuring instrument according to claim 5, characterized in that: The locking assembly (4) includes a mounting shell (40) disposed on the back of the L-shaped plate (16). A pressing plate (41) is disposed inside the mounting shell (40). A pair of corresponding insertion posts (43) are disposed on the front of the pressing plate (41) and a pull handle (42) is disposed on the back of the pressing plate (41). The tail of the pull handle (42) is located outside the mounting shell (40). Several top pressure springs (44) are also disposed on the back of the pressing plate (41). The top pressure springs (44) abut against the inner wall of the pressing plate (41) and the mounting shell (40).

7. The handheld seamless steel pipe extreme outer diameter measuring instrument according to claim 6, characterized in that: A pad (3) is provided on the inner bottom surface of the U-shaped frame (1), a handle (14) is provided on one side of the U-shaped frame (1), and a handle (15) is provided at the bottom of the U-shaped frame (1).

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