A calibration tool for a continuous wall thickness measurement device

Abstract

This utility model relates to the field of measurement equipment calibration technology, and more specifically, to a calibration tool for a continuous wall thickness measuring device. The tool includes a base plate, a device fixture for holding the continuous wall thickness measuring device, and a gauge block fixture for holding gauge blocks. Both the device fixture and the gauge block fixture are mounted on the base plate. The device fixture also has a force-applying component, which is a long, flexible, elastic element. Both ends of the force-applying component are fixedly mounted on the device fixture, and the middle part of the force-applying component can hook onto the continuous wall thickness measuring device to provide measuring force. This utility model avoids the problem of fluctuations in manually applied measuring force, prevents the measuring force from affecting the measurement results of the continuous wall thickness measuring device, improves the calibration accuracy and stability of the continuous wall thickness measuring device, identifies defective measuring equipment, improves product quality, reduces waste output, and lowers manufacturing costs.

Description

Technical Field

[0001] This utility model relates to the field of measurement equipment calibration technology, and more specifically, to a calibration tool for a continuous wall thickness measurement device. Background Technology

[0002] Thickness measurement is a crucial indicator of pipe quality. Abnormal thickness can affect the pipe's compressive strength and service life. Current pipe manufacturing technology typically involves extruding raw materials into pipes using an extruder. This method results in roughly equal pipe thickness along its length, with thickness variations primarily occurring along the circumferential direction. Existing continuous wall thickness measurement devices for pipes are vernier caliper-like devices, equipped with a fixed jaw and a sliding jaw. The fixed and sliding jaws clamp onto the inner and outer walls of the pipe, respectively. The sliding jaw is slidably mounted on a mounting bracket to accommodate different thicknesses at different locations on the pipe. During measurement, a measuring force is applied to both the fixed and sliding jaws to ensure they grip the pipe wall tightly. After installation, the operator moves the device one full circumference, allowing for continuous circumferential measurement and obtaining complete pipe wall thickness data. To ensure smooth movement of the fixed and sliding jaws on the pipe wall, rollers have been replaced with the parts of the fixed and sliding jaws that contact the pipe. To guarantee measurement accuracy, the continuous wall thickness measuring device generally requires calibration before measurement. The existing calibration method involves placing a gauge block between the fixed and sliding jaws and manually applying a measuring force to maintain the gauge block's grip. The device is then calibrated based on the difference between the data from the gauge block and the continuous wall thickness measuring device. However, this method suffers from instability in the manually applied measuring force, making stable control difficult. Excessive manual force can cause deformation of the continuous wall thickness measuring device or the gauge block. Furthermore, the inability to maintain a constant measuring force leads to discrepancies in calibration results, making it difficult to accurately identify defective measuring equipment. This negatively impacts pipe product quality, increases scrap output, and raises manufacturing costs. Utility Model Content

[0003] To address the technical problem of the impact of manually applied measuring force on the measurement accuracy of continuous wall thickness measuring devices in existing technologies, this utility model provides a calibration tool for continuous wall thickness measuring devices. This tool avoids the influence of fluctuations in manually applied measuring force, prevents the measuring force from affecting the measurement results of the continuous wall thickness measuring device, improves the calibration accuracy and stability of the continuous wall thickness measuring device, identifies defective measuring devices, improves product quality, reduces waste output, and lowers production costs.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a calibration tool for a continuous wall thickness measuring device, including a base plate, a device clamp for holding the continuous wall thickness measuring device, and a gauge block clamp for holding gauge blocks. The device clamp and the gauge block clamp are both mounted on the base plate. The device clamp is also provided with a force-applying component, which is a long strip-shaped soft elastic component. The two ends of the force-applying component are fixedly mounted on the device clamp, and the middle part of the force-applying component can hook onto the continuous wall thickness measuring device to provide measuring force for the continuous wall thickness measuring device.

[0005] In this technical solution, the base plate serves as the mounting platform for all components, determining the relative positions of each part and the basic structure of the calibration tool, ensuring the stability of the calibration fixture during calibration. Calibration primarily utilizes two components: a continuous wall thickness measuring device and a gauge block. When calibrating the continuous wall thickness measuring device, it is crucial to ensure the relative stability of the device and gauge block. Therefore, a device clamp and a gauge block clamp are installed on the base plate. The device clamp holds the continuous wall thickness measuring device, and the gauge block clamp holds the gauge block. After being clamped by these clamps, the relative positions of the continuous wall thickness measuring device and the gauge block remain stable, preventing shaking during manual handling and thus avoiding calibration deviations. The device clamp also includes a force-applying component to provide measuring force to the continuous wall thickness measuring device during calibration. This force-applying component is a long, flexible, elastic element fixed at both ends to the device clamp, possessing its own elasticity. After the continuous wall thickness measuring device is fixed on the fixture, the position of the fixed jaw in the device remains unchanged, while the sliding jaw can still slide. When the gauge block is installed on the gauge block fixture, the fixture is positioned between the fixed jaw and the sliding jaw. The operator then pulls the force-applying component, causing it to engage with the sliding jaw. Under the elastic force of the force-applying component, the sliding jaw moves towards the fixed jaw until it clamps the gauge block together with the fixed jaw. The elastic force of the force-applying component depends only on its deformation. Therefore, as long as the shapes of the continuous wall thickness measuring device and the gauge block do not change during calibration, the elastic force of the force-applying component will not change, ensuring that the measuring force of the continuous wall thickness measuring device remains stable throughout the calibration process.

[0006] Preferably, the force-applying component includes a force-applying spring and a connecting member sleeved on the continuous wall thickness measuring device. At least two force-applying springs are provided, one end of each of the two force-applying springs is detachably connected to both ends of the connecting member, and the other end of each force-applying spring is detachably mounted on the device fixture.

[0007] Preferably, the device fixture includes a bracket, an upper clamping plate, and a lower clamping plate. The bracket is mounted on the base plate, the upper clamping plate is fixed to the upper end of the bracket facing the gauge block fixture, the lower clamping plate is located below the upper clamping plate and is slidably connected to the bracket in the vertical direction, and the lower clamping plate is also connected to a driving device for driving the lower clamping plate to slide.

[0008] Preferably, the driving device includes a threaded rod and a clamping handwheel. The upper clamping plate has a through hole, and the lower clamping plate has a threaded hole. The threaded rod is sequentially inserted into the through hole and the threaded hole. The threaded rod is rotatably connected to the through hole and threadedly connected to the threaded hole. The clamping handwheel is fixedly installed on the upper end of the threaded rod and is located above the upper clamping plate and abuts against the upper surface of the upper clamping plate.

[0009] Preferably, a first slide rail is fixedly installed on the upper surface of the base plate. The length direction of the first slide rail is perpendicular to the line connecting the gauge block fixture and the device fixture. A first sliding groove is provided at the bottom end of the bracket, and the first sliding groove is slidably connected to the first slide rail.

[0010] Preferably, the cross-section of the first slide rail is an inverted trapezoidal structure, and the shape of the first slide groove matches the shape of the first slide rail.

[0011] Preferably, the gauge block fixture includes a second bracket, a second upper clamping plate, and a second lower clamping plate. The second bracket is mounted on the base plate. Both the second upper clamping plate and the second lower clamping plate are slidably mounted on the side of the second bracket facing the device fixture. A spring is also provided between the second upper clamping plate and the second lower clamping plate, and the upper and lower ends of the spring are respectively connected to the second upper clamping plate and the second lower clamping plate.

[0012] Preferably, the second upper clamping plate has a T-shaped structure, and the wider end of the second upper clamping plate is connected to the second bracket.

[0013] Preferably, the base plate is further provided with a second slide rail, the length direction of the second slide rail is in the same direction as the line connecting the gauge block fixture and the device fixture, and the lower end of the second bracket is provided with a second slide groove, the second slide groove being slidably connected to the second slide rail.

[0014] Preferably, the cross-section of the second slide rail is an inverted trapezoidal structure, and the shape of the second slide groove matches that of the second slide rail.

[0015] Compared with existing technologies, the beneficial effects of this technical solution are as follows: The base plate is equipped with a fixture for fixing the continuous wall thickness measuring device and a gauge block fixture for fixing the gauge blocks, ensuring stability during the calibration process and preventing shaking of the continuous wall thickness measuring device and gauge blocks during manual handling, thus preventing any impact on calibration accuracy. The fixture is equipped with a force-applying component that can apply a stable measuring force to the continuous wall thickness measuring device, improving the calibration accuracy and stability of the device. This facilitates the identification of defective measuring equipment, improves product quality, reduces scrap output, and lowers manufacturing costs. Attached Figure Description

[0016] Figure 1 This is a perspective view of the calibration tool for the continuous wall thickness measuring device of this utility model;

[0017] Figure 2 This is a perspective view of the fixture in the calibration tool of the continuous wall thickness measuring device of this utility model;

[0018] Figure 3 This is a perspective view of the gauge block fixture in the calibration tool of the continuous wall thickness measuring device of this utility model.

[0019] In the attached diagram: 1. Base plate; 2. Device fixture; 3. Gauge block fixture; 4. Force-applying component; 11. First slide rail; 12. Second slide rail; 21. Bracket; 22. Upper clamping plate; 23. Lower clamping plate; 24. Drive device; 25. First slide groove; 31. Second bracket; 32. Second upper clamping plate; 33. Second lower clamping plate; 34. Spring; 35. Second slide groove; 41. Force-applying spring; 42. Connecting component; 241. Threaded rod; 242. Clamping handwheel. Detailed Implementation

[0020] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0021] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0022] The technical solution of this utility model will be further described in detail below through specific embodiments and with reference to the accompanying drawings:

[0023] Example 1

[0024] like Figure 1As shown, a calibration tool for a continuous wall thickness measuring device includes a base plate 1, a device fixture 2 for holding the continuous wall thickness measuring device, and a gauge block fixture 3 for holding gauge blocks. Both the device fixture 2 and the gauge block fixture 3 are mounted on the base plate 1. The device fixture 2 also has a force-applying component 4, which is a long, flexible elastic element. Both ends of the force-applying component 4 are fixedly mounted on the device fixture 2, and the middle part of the force-applying component 4 can hook onto the continuous wall thickness measuring device to provide measuring force. The base plate 1 serves as a mounting platform for all components, determining the relative positions of each part and the basic structure of the calibration tool, ensuring the stability of the calibration fixture during calibration work. Calibration primarily utilizes two components: a continuous wall thickness measuring device and a gauge block. During calibration, ensuring the relative stability of the device and gauge block's positions is crucial. Therefore, a device clamp 2 and a gauge block clamp 3 are mounted on the base plate 1. Device clamp 2 holds the continuous wall thickness measuring device, and gauge block clamp 3 holds the gauge block. Clamped by these clamps, the relative positions of the device and gauge block remain stable, preventing shaking during manual handling and thus avoiding calibration deviations. A force-applying component 4 is also provided on device clamp 2 to provide measuring force to the continuous wall thickness measuring device during calibration. The force-applying component 4 is a long, flexible, elastic element fixed at both ends to device clamp 2, possessing its own elasticity. Once the continuous wall thickness measuring device is fixed on device clamp 2, the position of the fixed jaws within the device remains unchanged, while the sliding jaws can still slide. After the gauge block is installed on the gauge block fixture 3, the fixture 3 is positioned between the fixed jaw and the movable jaw. Then, the operator pulls the force-applying component 4, causing it to fit onto the sliding jaw. Under the elastic force of the force-applying component 4, the sliding jaw moves towards the fixed jaw until it clamps the gauge block together with the fixed jaw. The elastic force of the force-applying component 4 depends only on its deformation. Therefore, as long as the shape of the continuous wall thickness measuring device and the gauge block does not change during the calibration process, the elastic force of the force-applying component 4 will not change, thus ensuring that the measuring force of the continuous wall thickness measuring device remains stable throughout the calibration process.

[0025] like Figure 1As shown, the force-applying component 4 includes a force-applying spring 41 and a connecting member 42 fitted onto the continuous wall thickness measuring device. At least two force-applying springs 41 are provided, with one end of each spring 41 detachably connected to both ends of the connecting member 42, and the other end of each spring 41 detachably mounted on the device clamp 2. The force-applying spring 41 provides elastic force to the force-applying component 4. If the force-applying spring 41 is directly fitted onto the continuous wall thickness measuring device, the structure of the device may damage the structure of the force-applying spring 41, causing it to exceed its elastic limit and undergo permanent deformation, thus losing its elastic force. Therefore, the connecting member 42 is needed for the structure fitted onto the continuous wall thickness measuring device. At least two force-applying springs 41 are provided, respectively located at both ends of the connecting member 42, ensuring that a correctly oriented measuring force can be applied to the continuous wall thickness measuring device through the connecting member 42. The force spring 41 is prone to fatigue during long-term use, which leads to a decrease in elasticity. Therefore, the force spring 41 and the device clamp 2, as well as the force spring 41 and the connecting piece 42 are detachable, making it convenient for staff to replace the force spring 41.

[0026] Example 2

[0027] This embodiment is similar to Embodiment 1 above, except that, as Figure 2 As shown, the device fixture 2 includes a support 21, an upper clamping plate 22, and a lower clamping plate 23. The support 21 is mounted on the base plate 1. The upper clamping plate 22 is fixed to the upper end of the support 21 facing the vector block fixture 3. The lower clamping plate 23 is located below the upper clamping plate 22 and is slidably connected to the support 21 in the vertical direction. The lower clamping plate 23 is also connected to a drive device 24 for driving the lower clamping plate 23 to slide. The support 21 is used to support and mount the upper clamping plate 22 and the lower clamping plate 23. In use, the continuous wall thickness measuring device only needs to be placed between the upper clamping plate 22 and the lower clamping plate 23. The operator controls the drive device 24 to drive the lower clamping plate 23 to move in the direction of the upper clamping plate 22 until the upper clamping plate 22 and the lower clamping plate 23 clamp the continuous wall thickness measuring device together, and then the calibration work can begin. After calibration is completed, the operator operates the drive device 24 to drive the lower clamping plate 23 to move away from the upper clamping plate 22, and then the operator can directly remove the continuous wall thickness measuring device from the device fixture 2.

[0028] like Figure 2As shown, the driving device 24 includes a threaded rod 241 and a clamping handwheel 242. The upper clamping plate 22 has a through hole, and the lower clamping plate 23 has a threaded hole. The threaded rod 241 is inserted sequentially into the through hole and the threaded hole, and is rotatably connected to the through hole and threadedly connected to the threaded hole. The clamping handwheel 242 is fixedly installed on the upper end of the threaded rod 241, located above the upper clamping plate 22 and abutting against its upper surface. The operator can drive the lower clamping plate 23 to move in different directions by rotating the threaded rod 241, thus clamping and releasing the continuous wall thickness measuring device.

[0029] like Figure 1 , 2 As shown, a first slide rail 11 is fixedly installed on the upper surface of the base plate 1. The length direction of the first slide rail 11 is perpendicular to the line connecting the gauge block clamp 3 and the device clamp 2. A first sliding groove 25 is provided at the bottom end of the bracket 21, and the first sliding groove 25 is slidably connected to the first slide rail 11. The bracket 21 can be slidably installed on the base plate 1 via the first slide rail 11, allowing the position of the device clamp 2 to be adjusted. After the operator installs the continuous wall thickness measuring device on the device clamp 2, the continuous wall thickness measuring device can be adjusted to align with the gauge block by moving the device clamp 2, thus achieving zeroing.

[0030] like Figure 1 , 2 As shown, the cross-section of the first slide rail 11 is an inverted trapezoidal structure, and the shape of the first slide groove 25 matches the shape of the first slide rail 11. By setting the first slide rail 11 with an inverted trapezoidal structure, the first slide rail 11 also has the function of preventing the bracket 21 from detaching from the base plate 1.

[0031] Example 3

[0032] This embodiment is similar to Embodiment 1 above, except that, as Figure 3As shown, the gauge block clamp 3 includes a second support 31, a second upper clamping plate 32, and a second lower clamping plate 33. The second support 31 is mounted on the base plate 1. Both the second upper clamping plate 32 and the second lower clamping plate 33 are slidably mounted on the side of the second support 31 facing the device clamp 2. A spring 34 is also provided between the second upper clamping plate 32 and the second lower clamping plate 33, with its upper and lower ends connected to the second upper clamping plate 32 and the second lower clamping plate 33, respectively. The second support 31 is used to mount the second upper clamping plate 32 and the second lower clamping plate 33, and the gauge block is placed between the second upper clamping plate 32 and the second lower clamping plate 33. The spring 34 provides elastic force to pull the second upper clamping plate 32 and the second lower clamping plate 33 towards each other, thereby clamping the gauge block between the second upper clamping plate 32 and the second lower clamping plate 33. Meanwhile, since the continuous wall thickness measuring device contacts the gauge block through rollers, the diameter of the rollers may vary in different directions. Therefore, when calibrating the continuous wall thickness measuring device, the operator also needs to move the second upper clamping plate 32 and the second lower clamping plate 33 in the vertical direction to drive the gauge block to move up and down, so that the rollers roll at least once on the gauge block, thereby calibrating the rollers.

[0033] like Figure 3 As shown, the second upper clamping plate 32 has a T-shaped structure, and the wider end of the second upper clamping plate 32 is connected to the second bracket 31. This arrangement allows the narrower end of the second upper clamping plate 32 to be used to clamp the gauge block, which avoids the second upper clamping plate 32 being too large and obstructing the view of the operator, thus preventing the continuous wall thickness measuring device from colliding with the gauge block fixture 3 when the gauge block moves.

[0034] like Figure 1 , 3 As shown, a second slide rail 12 is also provided on the base plate 1. The length direction of the second slide rail 12 is in the same direction as the line connecting the gauge block fixture 3 and the device fixture 2. A second slide groove 35 is provided at the lower end of the second bracket 31, and the second slide groove 35 is slidably connected to the second slide rail 12. The position between the gauge block fixture 3 and the device fixture 2 can be adjusted through the second slide rail 12 to adapt to the different position requirements of the gauge blocks for different specifications of continuous wall thickness measuring devices.

[0035] like Figure 1 , 3 As shown, the cross-section of the second slide rail 12 is an inverted trapezoidal structure, and the shape of the second slide groove 35 matches that of the second slide rail 12. This arrangement allows the second slide rail 12 to restrict the movement of the second support 31 away from the base plate 1, thereby fixing the gauge block clamp 3 to the base plate 1.

[0036] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A calibration tool for a continuous wall thickness measuring device, characterized in that, The device includes a base plate (1), a device clamp (2) for holding a continuous wall thickness measuring device, and a gauge block clamp (3) for holding gauge blocks. The device clamp (2) and the gauge block clamp (3) are both mounted on the base plate (1). The device clamp (2) is also provided with a force-applying component (4). The force-applying component (4) is a long strip of soft elastic material. The two ends of the force-applying component (4) are fixedly mounted on the device clamp (2). The middle part of the force-applying component (4) can hook onto the continuous wall thickness measuring device to provide measuring force for the continuous wall thickness measuring device.

2. The calibration tool for a continuous wall thickness measuring device according to claim 1, characterized in that, The force-applying component (4) includes a force-applying spring (41) and a connector (42) sleeved on the continuous wall thickness measuring device. There are at least two force-applying springs (41). One end of each of the two force-applying springs (41) is detachably connected to both ends of the connector (42), and the other end of the force-applying spring (41) is detachably mounted on the device clamp (2).

3. The calibration tool for a continuous wall thickness measuring device according to claim 1, characterized in that, The device fixture (2) includes a bracket (21), an upper clamping plate (22) and a lower clamping plate (23). The bracket (21) is mounted on the base plate (1). The upper clamping plate (22) is fixed to the upper end of the bracket (21) facing the gauge block fixture (3). The lower clamping plate (23) is located below the upper clamping plate (22) and is slidably connected to the bracket (21) in the vertical direction. The lower clamping plate (23) is also connected to a driving device (24) for driving the lower clamping plate (23) to slide.

4. The calibration tool for a continuous wall thickness measuring device according to claim 3, characterized in that, The driving device (24) includes a threaded rod (241) and a clamping handwheel (242). The upper clamping plate (22) has a through hole, and the lower clamping plate (23) has a threaded hole. The threaded rod (241) is inserted into the through hole and the threaded hole in sequence. The threaded rod (241) is rotatably connected to the through hole and threadedly connected to the threaded hole. The clamping handwheel (242) is fixedly installed on the upper end of the threaded rod (241). The clamping handwheel (242) is located above the upper clamping plate (22) and abuts against the upper surface of the upper clamping plate (22).

5. A calibration tool for a continuous wall thickness measuring device according to claim 3, characterized in that, The upper surface of the base plate (1) is fixedly installed with a first slide rail (11). The length direction of the first slide rail (11) is perpendicular to the line connecting the gauge block fixture (3) and the device fixture (2). The bottom end of the bracket (21) is provided with a first slide groove (25), which is slidably connected to the first slide rail (11).

6. The calibration tool for a continuous wall thickness measuring device according to claim 5, characterized in that, The first slide rail (11) has an inverted trapezoidal cross section, and the shape of the first slide groove (25) matches the shape of the first slide rail (11).

7. A calibration tool for a continuous wall thickness measuring device according to claim 1, characterized in that, The gauge block fixture (3) includes a second bracket (31), a second upper clamping plate (32), and a second lower clamping plate (33). The second bracket (31) is mounted on the base plate (1). The second upper clamping plate (32) and the second lower clamping plate (33) can be slidably mounted on the side of the second bracket (31) facing the device fixture (2). A spring (34) is also provided between the second upper clamping plate (32) and the second lower clamping plate (33). The upper and lower ends of the spring (34) are respectively connected to the second upper clamping plate (32) and the second lower clamping plate (33).

8. The calibration tool for a continuous wall thickness measuring device according to claim 7, characterized in that, The second upper clamping plate (32) has a T-shaped structure, and the wider end of the second upper clamping plate (32) is connected to the second bracket (31).

9. A calibration tool for a continuous wall thickness measuring device according to claim 8, characterized in that, The base plate (1) is also provided with a second slide rail (12). The length direction of the second slide rail (12) is in the same direction as the line connecting the gauge block fixture (3) and the device fixture (2). The lower end of the second bracket (31) is provided with a second slide groove (35). The second slide groove (35) is slidably connected to the second slide rail (12).

10. A calibration tool for a continuous wall thickness measuring device according to claim 9, characterized in that, The cross-section of the second slide rail (12) is an inverted trapezoidal structure, and the shape of the second slide groove (35) matches that of the second slide rail (12).

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