Portable handheld comprehensive measuring tool for measuring outer diameter of seamless steel pipe

Abstract

The utility model relates to the technical field of measuring tools, in particular to a convenient handheld seamless steel tube outer diameter comprehensive measuring tool. The device comprises a fixing frame, supporting rods are symmetrically arranged on the inner walls of the two sides of the fixing frame, a supporting wheel is arranged at the top of each supporting rod, a pair of sliding sleeves are symmetrically arranged at the top of the fixing frame, a measuring auxiliary assembly is movably arranged at the top of the fixing frame, and a detachable acrylic transparent plate is arranged on the measuring auxiliary assembly. A stable supporting structure is provided for the device through the supporting rods on the inner walls of the two sides of the fixing frame and the top riding wheels, it is ensured that the device cannot shake or deviate in the measuring process, meanwhile, the bottom of the bolt is tightly attached to the top of the outer wall of the seamless steel pipe all the time under the continuous action of the extrusion spring, and even if the surface of the steel pipe is uneven, the device cannot be damaged. And the continuity and the accuracy of measurement can be ensured, and measurement errors caused by untight attachment are avoided.

Description

Technical Field

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

[0002] Seamless steel pipes are a crucial basic material in many industrial sectors, including petroleum, chemical, and machinery manufacturing. In practical applications, the outer diameter accuracy of seamless steel pipes has a decisive impact on their performance and overall quality. For example, in chemical pipeline systems, errors in the outer diameter can affect the flow velocity and flow rate stability of the fluid within the pipe; in machinery manufacturing, deviations in the outer diameter of seamless steel pipes used for precision components can prevent proper assembly of the components, affecting the overall operational accuracy of the equipment.

[0003] To ensure seamless steel pipes meet usage standards, accurately obtaining their average outer diameter is crucial. Currently, traditional measurement methods have significant shortcomings. Using ordinary measuring tools such as calipers requires multiple measurements at different locations on the pipe, followed by manual calculation of the average value. This is not only inefficient but also prone to errors due to manual reading and calculation. While large, specialized measuring equipment can obtain high-precision single-point measurement data, these devices are expensive, complex to operate, and require importing the measurement data into specialized software or manual processing when calculating the average value. This process is cumbersome and prone to errors. Furthermore, these devices are bulky, difficult to carry, and unsuitable for complex and variable environments such as construction sites. Utility Model Content

[0004] The purpose of this invention is to provide a convenient handheld comprehensive measuring tool for the outer diameter of seamless steel pipes, in order 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 fixed frame, on which support rods are symmetrically arranged on the inner walls of both sides of the fixed frame, and each support rod is provided with a support roller at its top. A pair of sliding sleeves are symmetrically arranged on the top of the fixed frame, and a measuring auxiliary component is movably arranged on the top of the fixed frame. A detachable acrylic transparent plate is provided on the measuring auxiliary component.

[0006] As a preferred embodiment of this utility model, the measuring auxiliary component includes a pair of guide posts, which are movably disposed in two sliding sleeves respectively. A compression spring is sleeved on the outer side of each guide post. The top end of the compression spring is disposed on the inner top surface of the fixed frame, and the bottom end of the compression spring is disposed on the top of the connecting plate. The bottoms of the two guide posts are connected by the connecting plate. A fixed plate is disposed in front of the connecting plate, and an internal thread cap is disposed on the fixed plate. A bolt is disposed on the internal thread of the internal thread cap.

[0007] As a preferred embodiment of this utility model, a second slot is provided on the back of the connecting plate, an insert block is provided at the bottom of the acrylic transparent plate, the insert block is inserted into the second slot, and positive and negative numerical scale marks are provided on the front of the acrylic transparent plate.

[0008] As a preferred embodiment of this utility model, a first slot is provided on the back of the fixing frame corresponding to the position of the second slot, and an installation groove communicating with the first slot is provided on one side of the top of the fixing frame. An oil-based pen is provided in the installation groove, and the oil-based pen is fixed in the installation groove by a clip. The clip is fixed in the installation groove by a pair of screws. A pointer is also provided in the top plate of the fixing frame.

[0009] As a preferred embodiment of this utility model, handles are symmetrically provided on the two outer walls of the fixing frame.

[0010] As a preferred embodiment of this utility model, the tip of the oil-based pen is flush with the pointer.

[0011] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0012] 1. This utility model provides a stable support structure for the device through the support rods on both sides of the fixed frame and the top support roller, ensuring that the device will not shake or deviate during the measurement process. At the same time, the continuous action of the compression spring keeps the bottom of the bolt tightly attached to the top of the seamless steel pipe outer wall. Even if the surface of the steel pipe is uneven, the continuity and accuracy of the measurement can be guaranteed, and measurement errors will not be caused by loose fit.

[0013] 2. When this utility model passes through a location where the outer diameter of the seamless steel pipe has an error, the guide column will move up and down according to the change in the diameter of the steel pipe, causing the oil-based pen to leave a mark on the back of the acrylic transparent plate. Since the tip of the oil-based pen is flush with the pointer and the front of the acrylic transparent plate has positive and negative numerical scale marks, the change in diameter can be accurately recorded, providing a reliable basis for the subsequent accurate calculation of the maximum, minimum and average diameter of the steel pipe.

[0014] 3. This utility model features symmetrical handles on both sides of the fixed frame, which conform to ergonomic design and make it easy for operators to hold. When measuring seamless steel pipes, operators can flexibly grasp the handles manually and move the entire device along the outer wall of the seamless steel pipe without the need for additional equipment or tools to assist in the movement, greatly improving the convenience of measurement. It is especially suitable for measuring seamless steel pipes in different installation environments and can quickly complete the measurement process from one end of the steel pipe to the other. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a schematic diagram of the fixed frame structure of this utility model;

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 This is a schematic diagram of one side of the measurement auxiliary component of this utility model;

[0020] Figure 6 This is a schematic diagram of the other side of the measurement auxiliary component of this utility model;

[0021] Figure 7 This is a schematic diagram of the acrylic transparent plate structure of this utility model;

[0022] Figure 8 This is a schematic diagram of the present invention installed on a seamless steel pipe.

[0023] Reference numerals: 1. Fixed frame; 10. Support rod; 11. Roller; 12. Sliding sleeve; 13. Mounting groove; 14. Clip; 15. Screw; 16. First slot; 17. Pointer; 18. Oil-based pen; 2. Handle; 3. Measuring auxiliary component; 30. Guide post; 31. Connecting plate; 32. Fixed plate; 33. Second slot; 34. Compression spring; 35. Internal thread cap; 36. Bolt; 4. Acrylic transparent plate; 40. Positive and negative numerical scale marks; 41. Insert block. Detailed Implementation

[0024] 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.

[0025] like Figures 1-8 As shown, the present invention proposes a convenient handheld seamless steel pipe outer diameter comprehensive measuring tool, which mainly consists of a fixed frame 1 and a measuring auxiliary component 3 set on the top of the fixed frame 1, wherein a detachable acrylic transparent plate 4 is installed on the measuring auxiliary component 3.

[0026] The inner walls on both sides of the fixed frame 1 are symmetrically provided with support rods 10, and each support rod 10 is equipped with a support roller 11 at the top. During measurement, it can better fit the bottom of the seamless steel pipe and provide stable support for measurement. A pair of sliding sleeves 12 are symmetrically provided at the top of the fixed frame 1.

[0027] The measurement auxiliary component 3 includes a pair of guide posts 30. The two guide posts 30 are movably installed in two sliding sleeves 12. The guide posts 30 and the sliding sleeves 12 are fitted with a clearance fit, which can ensure that the guide posts 30 can move freely up and down in the sliding sleeves 12 and ensure stability during the movement. A compression spring 34 is sleeved on the outside of the guide posts 30. The top end of the compression spring 34 is tightly abutted against the inner top surface of the fixed frame 1, and the bottom end is connected to the top of the connecting plate 31. The bottoms of the two guide posts 30 are connected through the connecting plate 31 to form a stable overall structure. A fixed plate 32 is set in front of the connecting plate 31. An internal thread cap 35 is installed on the fixed plate 32. The internal thread cap 35 is connected to a bolt 36. By rotating the bolt 36, the connecting plate 31 can be moved up and down under the action of the internal thread cap 35.

[0028] The back of the connecting plate 31 has a second slot 33. The bottom of the acrylic transparent plate 4 has an insert 41. The insert 41 is integrally formed with the acrylic transparent plate 4 and is tightly inserted into the second slot 33, so as to realize the detachable connection between the acrylic transparent plate 4 and the connecting plate 31. This makes it convenient to remove the acrylic transparent plate 4 for data analysis after the measurement is completed. The front of the acrylic transparent plate 4 has positive and negative numerical scale marks 40 for intuitive reading of measurement data.

[0029] A first slot 16 is provided on the back of the fixed frame 1 at the position corresponding to the second slot 33. The first slot 16 and the second slot 33 correspond to each other, which facilitates the installation and fixation of the acrylic transparent plate 4. A mounting groove 13 communicating with the first slot 16 is provided on one side of the top of the fixed frame 1. An oil-based pen 18 is placed in the mounting groove 13. The oil-based pen 18 is fixed in the mounting groove 13 by a clip 14. The clip 14 fits tightly with the oil-based pen 18 to prevent the oil-based pen 18 from shaking. The clip 14 is fixed in the mounting groove 13 by a pair of screws 15. The oil-based pen 18 can be easily removed and replaced by tightening or loosening the screws 15. A pointer 17 is also provided in the top plate of the fixed frame 1.

[0030] To facilitate operation, handles 2 are symmetrically installed on the outer walls of both sides of the fixed frame 1, allowing operators to easily hold the measuring instrument and move it along the outer wall of the seamless steel pipe for measurement. In particular, the tip of the oil-based pen 18 is flush with the pointer 17, ensuring that the marks left by the oil-based pen 18 on the acrylic transparent plate 4 during the measurement process can accurately reflect the change in the outer diameter of the seamless steel pipe and correspond to the scale indicated by the pointer 17, which facilitates the subsequent calculation of the outer diameter value of the seamless steel pipe.

[0031] When using this device, first, place the fixing frame 1 smoothly onto one end of the seamless steel pipe, ensuring that the two support rollers 11 are tightly fitted to the bottom of the seamless steel pipe to provide stable support for the device. At the same time, adjust the position of the bolt 36 so that its bottom is fitted to the top of the seamless steel pipe. Then, by rotating the bolt 36 in the forward or reverse direction, the connecting plate 31 will be moved up or down under the synergistic action of the internal thread cap 35 until the zero mark is accurately aligned with the pointer 17, thus completing the calibration of the device. After calibration, install the oil-based pen 18 into the mounting slot 13, ensuring that the installation is secure, in preparation for subsequent marking work.

[0032] After completing the above operations, the operator uses a measuring tape to accurately measure the diameter of the seamless steel pipe at one end of the device and carefully records the initial value. Then, the operator holds the two handles 2 with both hands and moves the entire device along the outer wall of the seamless steel pipe to the other end with a stable and even force. During the movement, the device should always remain perpendicular to the axis of the steel pipe, and the two support rollers 11 should be in contact with the bottom of the seamless steel pipe to ensure the accuracy of the measurement. After the device has been moved smoothly to the other end of the seamless steel pipe, the acrylic transparent plate 4 is carefully removed in preparation for data analysis.

[0033] As the device moves along the seamless steel pipe, several compression springs 34 play a crucial role, continuously providing stable elastic force to ensure that the bottom of the bolt 36 remains tightly fitted against the top of the outer wall of the seamless steel pipe. When the device passes a location where the diameter of the outer wall of the seamless steel pipe has an error, the change in the pipe diameter will exert an upward or downward force on the bolt 36. This force is transmitted through the guide post 30, causing the guide post 30 to move upward or downward accordingly (when encountering a slightly larger diameter, the guide post 30 moves upward; when encountering a slightly smaller diameter, the guide post 30 moves downward). The movement of the guide post 30 will cause the oil-based pen 18 mounted on the connecting plate 31 to move synchronously, thus leaving a mark on the back of the acrylic transparent plate 4 reflecting the numerical change. The value from above zero to the highest point of the mark, plus the value measured by the initial measuring ruler, gives the maximum diameter of the seamless steel pipe. The minimum diameter of the seamless steel pipe is obtained by subtracting the value from below zero to the lowest point of the mark from the value measured by the initial measuring ruler. After obtaining the maximum and minimum diameter values ​​of the seamless steel pipe, the average diameter of the seamless steel pipe can be accurately calculated using the formula "average diameter = (maximum diameter + minimum diameter) ÷ 2".

[0034] 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 convenient handheld comprehensive measuring tool for the outer diameter of seamless steel pipes, comprising a fixed frame (1), characterized in that: The fixed frame (1) has symmetrical support rods (10) on both sides of the inner wall. Each support rod (10) has a support roller (11) on its top. The fixed frame (1) has a pair of sliding sleeves (12) symmetrically arranged on its top. The fixed frame (1) has a measuring auxiliary component (3) movably arranged on its top. The measuring auxiliary component (3) has a detachable acrylic transparent plate (4).

2. The convenient handheld seamless steel pipe outer diameter comprehensive measuring tool according to claim 1, characterized in that: The measurement auxiliary component (3) includes a pair of guide posts (30), which are movably disposed in two sliding sleeves (12). A compression spring (34) is sleeved on the outer side of the guide post (30). The top end of the compression spring (34) is disposed on the inner top surface of the fixed frame (1), and the bottom end of the compression spring (34) is disposed on the top of the connecting plate (31). The bottoms of the two guide posts (30) are connected by the connecting plate (31). A fixed plate (32) is disposed in front of the connecting plate (31). An internal thread cap (35) is disposed on the fixed plate (32), and a bolt (36) is disposed on the internal thread of the internal thread cap (35).

3. The convenient handheld seamless steel pipe outer diameter comprehensive measuring tool according to claim 2, characterized in that: The back of the connecting plate (31) is provided with a second slot (33), the bottom of the acrylic transparent plate (4) is provided with an insert (41), the insert (41) is inserted into the second slot (33), and the front of the acrylic transparent plate (4) is provided with positive and negative numerical scale marks (40).

4. The convenient handheld seamless steel pipe outer diameter comprehensive measuring tool according to claim 3, characterized in that: The fixed frame (1) has a first slot (16) on the back corresponding to the second slot (33). The fixed frame (1) has a mounting groove (13) on one side of the top that communicates with the first slot (16). An oil-based pen (18) is installed in the mounting groove (13). The oil-based pen (18) is fixed in the mounting groove (13) by a clip (14). The clip (14) is fixed in the mounting groove (13) by a pair of screws (15). A pointer (17) is also installed in the top plate of the fixed frame (1).

5. The convenient handheld seamless steel pipe outer diameter comprehensive measuring tool according to claim 1, characterized in that: Handles (2) are symmetrically arranged on the outer walls of both sides of the fixed frame (1).

6. The convenient handheld seamless steel pipe outer diameter comprehensive measuring tool according to claim 4, characterized in that: The tip of the oil-based pen (18) is flush with the pointer (17).

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