Calibration device

Abstract

The utility model relates to a calibration device which is used for calibrating a fastener connected to a to-be-connected piece, and the calibration device comprises a loading piece, a first detection assembly and a second detection assembly. The loading member may be coupled to the fastener, the loading member configured to apply a predetermined load to the fastener. The first detection assembly comprises a first detection part and a first display part, the first detection part can be arranged on the side, close to the to-be-connected piece, of the fastener in the length direction of the fastener, the first detection part is configured to detect the load value of the fastener loaded by the loading piece, and the first display part is connected with the first detection part and configured to feed back the load value. The second detection assembly is arranged on the side, away from the to-be-connected piece, of the fastener in the length direction, the second detection assembly is configured to detect parameter values after the fastener is loaded by the loading piece, and the parameter values comprise any one of sound time, sound time ratio, the length of the fastener, stress parameters and the like. According to the embodiment of the invention, the cost is reduced and the convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of component detection, in particular to a calibration device. Background Art

[0002] Bolts are a simple and easy-to-assemble and disassemble fixed connection structure, and are widely used in large facilities and equipment such as wind turbines and bridges. Once a bolt connection fails, it will cause structural instability and even cause major safety problems. Therefore, the reliability verification of the axial preload of the bolt is of great significance and urgent.

[0003] Before testing the bolt axial force, the bolt to be tested needs to be calibrated to obtain the relationship between the axial force of the bolt to be tested and the measurement parameters. At present, the calibration process is usually carried out in a specific laboratory scenario, using a tensile test fixture to calibrate the bolt. Not only does it require coordination of calibration samples, but it also requires seeking laboratory resources. In addition, bolt production, calibration and installation are usually not at the same site, and testers need to run back and forth, resulting in unnecessary manpower and time costs.

[0004] Therefore, a new calibration device is urgently needed. Utility Model Content

[0005] The embodiment of the present application provides a calibration device, which is beneficial to reducing costs and improving convenience.

[0006] On the one hand, according to an embodiment of the present application, a calibration device is proposed for calibrating a fastener connected to a part to be connected, the calibration device comprising: a loader, which can be connected to the fastener, and the loader is configured to apply a predetermined load to the fastener; a first detection component, comprising a first detection part and a first display part, the first detection part can be set on a side of the fastener close to the part to be connected along its own length direction, the first detection part is configured to detect the load value of the fastener after being loaded by the loader, the first display part is connected to the first detection part and is configured to feedback the load value; a second detection component is set on a side of the fastener away from the part to be connected along the length direction, the second detection component is configured to detect a parameter value of the fastener after being loaded by the loader, the parameter value including any one of the sound time, the sound time ratio, the length of the fastener, the stress parameter, etc.

[0007] According to one aspect of the embodiment of the present application, the loading member includes a main body portion and a sleeve that are connected and arranged, and the sleeve is covered on a side of the fastener that is away from the to-be-connected member along the length direction.

[0008] According to one aspect of the embodiment of the present application, the loading member includes any one of a hydraulic stretching device, an electric stretching device, a hydraulic wrench, and an electric wrench.

[0009] According to one aspect of the embodiment of the present application, the first detection component includes a first signal line, and the first signal line is detachably connected between the first detection portion and the first display portion.

[0010] According to one aspect of the embodiment of the present application, the first detection component includes a detection patch, and the detection patch is attached to the outer periphery of the fastener.

[0011] According to one aspect of an embodiment of the present application, the calibration device includes a gasket, which is configured to be sleeved and clamped between a fastener and a part to be connected.

[0012] According to one aspect of the embodiment of the present application, the first detection portion includes a detection washer, which is sleeved and clamped between the fastener and the part to be connected.

[0013] According to one aspect of an embodiment of the present application, the second detection component includes a collecting piece, a second signal line and a second display unit. The collecting piece can be abutted against a side of the fastener away from the piece to be connected along the length direction. The second signal line can be detachably connected between the collecting piece and the second display unit. The second display unit is configured to feedback parameter values.

[0014] According to one aspect of the embodiment of the present application, the collecting member includes a magnetic attraction portion, and the collecting member is adsorbed and connected to the fastener via the magnetic attraction portion.

[0015] According to one aspect of the embodiment of the present application, the second display component includes one of an electromagnetic ultrasonic testing device and a piezoelectric ultrasonic testing device.

[0016] The calibration device provided in the embodiment of the present application is used to calibrate a fastener connected to a part to be connected, and the calibration device includes a loading part, a first detection component, and a second detection component. By setting the loading part to apply a predetermined load to the fastener, using the first detection component to detect and feedback the load value of the fastener after being loaded by the loading part, and using the second detection component to detect and feedback the parameter value of the fastener after being loaded by the loading part, so as to obtain the corresponding relationship between the load value and the parameter value of the fastener, the calibration process of the fastener by the calibration device is completed, without relying on the experimental tooling in the laboratory environment, which can effectively reduce the cost and time of calibrating the fastener and help improve convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0018] Figure 1 A schematic diagram of a calibration device according to an embodiment of the present application;

[0019] Figure 2 A schematic diagram of a structure of a calibration device for another embodiment of the present application;

[0020] Figure 3 A schematic structural diagram of a calibration device for performing calibration according to another embodiment of the present application.

[0021] in:

[0022] 100-calibration device;

[0023] 10-loading member; 11-main body; 12-sleeve;

[0024] 20-first detection component; 21-first detection unit; 211-detection patch; 212-detection gasket; 22-first display unit; 23-first signal line;

[0025] 30 - second detection component; 31 - collection component; 32 - second signal line; 33 - second display unit;

[0026] 200-fastener; 210-stud; 220-nut; 300-jointed piece; 310-first piece to be joined; 320-second piece to be joined;

[0027] X-length direction. DETAILED DESCRIPTION

[0028] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0029] The directional words appearing in the following description are all directions shown in the figure, and do not limit the calibration device of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0030] In order to better understand this application, Figures 1 to 3 A calibration device according to an embodiment of the application is described in detail.

[0031] After fasteners are used to connect the parts to be connected, before they are subjected to working loads, in order to enhance the reliability and tightness of the connection and prevent gaps or relative slippage between the fasteners after being subjected to loads, a certain force, namely preload, also called axial force, needs to be applied to the fasteners in advance.

[0032] Before testing the axial force of fasteners, the fasteners to be tested need to be calibrated. Currently, the calibration process is usually carried out in a specific laboratory scenario, using a tensile test fixture to calibrate the fasteners. This not only requires coordination of calibration samples, but also requires seeking laboratory resources. Moreover, fastener production, calibration and installation are usually not carried out at the same site, so testers need to run back and forth, resulting in unnecessary manpower and time costs.

[0033] Based on the above defects, an embodiment of the present application provides a calibration device 100, which can be used to calibrate a fastener 200 connected to a part to be connected 300. The fastener 200 can be calibrated without relying on experimental tooling in a laboratory environment, which is beneficial to reducing time and labor costs and improving convenience.

[0034] See also Figures 1 to 3 The embodiment of the present application provides a calibration device 100 for calibrating a fastener 200 connected to a member to be connected 300. The calibration device 100 includes a loading member 10, a first detection component 20, and a second detection component 30. The loading member 10 can be connected to the fastener 200, and the loading member 10 is configured to apply a predetermined load to the fastener 200. The first detection component 20 includes a first detection part 21 and a first display part 22. The first detection part 21 can be arranged on a side of the fastener 200 close to the member to be connected 300 along its own length direction X. The first detection part 21 is configured to detect the load value of the fastener 200 after being loaded by the loading member 10. The first display part 22 is connected to the first detection part 21 and is configured to feedback the load value. The second detection component 30 is arranged on the side of the fastener 200 away from the connected member 300 along the length direction X. The second detection component 30 is configured to detect the parameter value of the fastener 200 after being loaded by the loader 10, and the parameter value includes any one of the sound time, the sound time ratio, the length of the fastener 200, the stress parameter, etc.

[0035] The calibration device 100 provided in the embodiment of the present application can obtain the corresponding relationship between the load value and the parameter value, that is, the calibration curve, by setting a loading member 10 capable of applying a predetermined load to the fastener 200, a first detection component 20 capable of detecting and feeding back the load value of the fastener 200 after being loaded, and a second detection component 30 capable of detecting and feeding back the parameter value of the fastener 200 after being loaded, so as to complete the process of calibrating the fastener 200. By setting in this way, the calibration scene of the fastener 200 can be transferred from the laboratory to the installation site or the production and processing site, without relying on the experimental tooling in the laboratory, saving time and labor costs, and making the calibration test work of the fastener 200 more convenient and economical.

[0036] Among them, the calibration device 100 provided in the embodiment of the present application can use the to-be-connected part 300, that is, the actual connection part, as an installation platform to calibrate the fastener 200. Optionally, the to-be-connected part 300 includes a first to-be-connected part 310 and a second to-be-connected part 320, and the fastener 200 is sequentially plugged into the first to-be-connected part 310, the first to-be-connected part 310 and connected to the first to-be-connected part 310, the first to-be-connected part 310, and the actual connection part is used as the installation platform. After the fastener 200 is produced, it can be directly sent to the installation site for calibration, or directly calibrated at the processing site. The use scenario is flexible, time and labor costs can be saved, and the calibration work of the fastener 200 is carried out more conveniently.

[0037] Of course, you can also make your own flange tooling as a platform, which can also save time and labor costs, making the calibration of the fastener 200 more convenient.

[0038] Optionally, the loader 10 may include a fastening tool that can apply a load to the fastener 200 and has a step loading load capability. This arrangement is conducive to improving the convenience of the calibration device 100, and can break through the limitations of the calibration scene, thereby improving versatility.

[0039] According to the calibration device 100 provided in the embodiment of the present application, the fastener 200 connected to the to-be-connected member 300 is calibrated, and the calibration process is as follows:

[0040] Step S100, connecting the fastener 200 to the part to be connected 300;

[0041] Step S200, using the loading member 10 to apply a predetermined load 1 to the fastener 200, observing the first display unit 22, recording the load value (defined as load 1) after the value fed back by the first display unit 22 stabilizes, and then removing the loading member 10;

[0042] Step S300: Use the second detection component to detect the parameter value, obtain the parameter value corresponding to load 1 (defined as parameter 1) and record it, and remove the second detection component;

[0043] Step S400, using the loading member 10 to apply a predetermined load 2 to the fastener 200, observing the first display unit 22, and recording the load value (defined as load 2) after the value fed back by the first display unit 22 is stable, then removing the loading member 10, repeating step S300, obtaining and recording the parameter value corresponding to load 2 (defined as parameter 2);

[0044] Step S500, repeating step S400, applying a predetermined load n to obtain load n and parameter n and recording them;

[0045] Step S600, load 1, load 2, ..., load n and parameter 1, parameter 2, ..., parameter n are fitted to obtain a load value-parameter value correspondence relationship (calibration curve).

[0046] In which, during the calibration process, the predetermined load can be loaded from 0 KN to the designed axial force according to a certain load increment step, and when the predetermined load is applied to the fastener 200 using the loader 10, the loader 10 is kept loaded for a period of time so that each load level is maintained for a period of time, so that the value detected by the first detection component 20 is more accurate.

[0047] The calibration device 100 provided in the embodiment of the present application can be used for axial force testing of the fastener 200 , and of course, can also be used for stress strain testing and axial deformation testing of the fastener 200 .

[0048] The embodiment of the present application is described with the fastener 200 being a bolt, wherein the fastener 200 includes a stud 210 and a nut 220. However, it should be understood that the present application is not limited thereto, and the calibration device 100 can also calibrate structures such as studs and screws.

[0049] See also Figure 2 As an optional implementation, the loader 10 includes a main body 11 and a sleeve 12 which are connected and arranged, and the sleeve 12 is covered on a side of the fastener 200 away from the to-be-connected member 300 along the length direction X.

[0050] By configuring the loader 10 to have a structure including a main body 11 and a sleeve 12, when the fastener 200 needs to be loaded, the operator can operate the main body 11 of the loader 10 and cover the sleeve 12 on the fastener 200 to load the load onto the fastener 200. The operation is simple and convenient, which helps to improve the convenience of the calibration device 100.

[0051] When the loading member 10 is used to apply a load to the fastener 200 , the sleeve 12 is wrapped around the nut 220 and the portion of the stud 210 protruding from the connected member 300 along the length direction X, and the sleeve 12 and the nut 220 are tightly matched to load them.

[0052] Optionally, the main body 11 and the sleeve 12 can be set as an integrally formed structure to improve processing efficiency. Of course, they can also be provided separately. For different types of fasteners 200, different types of sleeves 12 are configured to be connected to the main body 11, which is beneficial to improve the versatility of the calibration device 100.

[0053] As an optional embodiment, the loader 10 includes any one of a hydraulic stretching device, an electric stretching device, a hydraulic wrench, and an electric wrench.

[0054] By configuring in this way, the reliability of the loading member 10 applying the predetermined load can be ensured, and the loading member 10 has the ability to load in a stepwise manner, which can help ensure the reliability of the calibration result of the calibration device 100.

[0055] Furthermore, the loader 10 is configured as one of a hydraulic stretching device, an electric stretching device, a hydraulic wrench, and an electric wrench, which is easy to obtain, easy to operate and transport, and can load the fastener 200 in various environments, making the use scenario of the calibration device 100 more flexible, which is beneficial to improving the versatility of the calibration device 100.

[0056] Optionally, the hydraulic stretching device includes a hydraulic stretcher, and the electric stretching device includes an electric stretcher.

[0057] As an optional implementation, the first detection component 20 includes a first signal line 23 , and the first signal line 23 is detachably connected between the first detection portion 21 and the first display portion 22 .

[0058] The first signal line 23 can transmit the data signal detected by the first detection component 20 to the first display unit 22 to ensure the reliability of signal transmission between the first display unit 22 and the first detection unit 21 , thereby facilitating improving the reliability of the calibration device 100 .

[0059] Optionally, the first signal line 23 is detachably connected to the first detection unit 21 and the first display unit 22, and different types of first signal lines 23 can be selected to be connected to the first detection unit 21 and the first display unit 22 according to different scenarios or different needs, so that the calibration device 100 provided in the embodiment of the present application is more versatile.

[0060] Optionally, the first signal line 23 includes a signal cable or the like.

[0061] In an optional embodiment, the first detection portion 21 includes a detection patch 211 , and the detection patch 211 is attached to the outer periphery of the fastener 200 .

[0062] By attaching the detection patch 211 to the outer periphery of the fastener 200, it is convenient to obtain the actual load value of the fastener 200 after being loaded by the loader 10. The manufacturing is simple and it is conducive to ensuring reliability.

[0063] Optionally, the detection patch 211 may be configured to be rectangular or circular, and of course, may also be configured to be a shape matching the outer circumference of the fastener 200 .

[0064] Optionally, the number of the detection patches 211 can be set to one, two, or more.

[0065] As an optional implementation, the calibration device 100 includes a gasket, which is configured to be sleeved and clamped between the fastener 200 and the part to be connected 300.

[0066] By providing a gasket, displacement between the fastener 200 and the member to be connected 300 can be prevented, so as to ensure the reliability of the test result of the calibration device 100.

[0067] Optionally, the shape of the gasket can be set to be circular, square, etc., which is not limited in the present application.

[0068] The calibration device 100 provided in the embodiment of the present application, by utilizing the loader 10, the first detection component 20 including the detection patch 211, and the second detection component, constitutes a simple and convenient calibration device 100, while unifying the calibration process of the fastener 200 in time and space.

[0069] As an optional implementation, the first detection portion 21 includes a detection washer 212 , and the detection washer 212 is sleeved and clamped between the fastener 200 and the member to be connected 300 .

[0070] By providing the detection washer 212 , displacement between the fastener 200 and the member to be connected 300 can be prevented, so as to ensure the reliability of the test result of the calibration device 100 .

[0071] The detection washer 212 can measure the actual load value signal of the fastener 200 after being loaded by the loader 10. This signal is transmitted to the first display unit 22 through the first signal line 23. The first display unit 22 converts the signal into a numerical value for the operator to watch and improve the visualization effect.

[0072] A detection washer 212 is provided between the fastener 200 and the member to be connected 300 , so that the detection result of the first detection component 20 is more accurate, thereby facilitating improving the accuracy of the calibration device 100 .

[0073] The calibration device 100 provided in the embodiment of the present application, by utilizing the loader 10, the first detection component 20 including the detection gasket 212, and the second detection component, constitutes a simple and convenient calibration device 100, while unifying the calibration process of the fastener 200 in time and space.

[0074] See also Figure 3 As an optional implementation, the second detection component 30 includes a collection piece 31, a second signal line 32 and a second display unit 33. The collection piece 31 can be abutted against a side of the fastener 200 away from the to-be-connected piece 300 along the length direction X. The second signal line 32 can be detachably connected between the collection piece 31 and the second display unit 33. The second display unit 33 is configured to feedback parameter values.

[0075] By setting in this way, the reliability of the calibration result of the calibration device 100 can be guaranteed.

[0076] Optionally, the collecting component 31 may be configured as an ultrasonic probe, or may be configured as other components.

[0077] The second signal line 32 can transmit the data signal detected by the acquisition component 31 to the second display unit 33 to ensure the reliability of signal transmission between the second display unit 33 and the acquisition component 31 , thereby facilitating improving the reliability of the calibration device 100 .

[0078] Optionally, the acquisition component 31 and the second display unit 33 are detachably connected, and different models of acquisition components 31 and the acquisition component 31 and the second display unit 33 can be selected according to different scenarios or different needs to be connected and set, so that the calibration device 100 provided in the embodiment of the present application is more versatile.

[0079] Optionally, the second signal line 32 includes a signal cable, etc. Optionally, the first signal line 23 and the second signal line 32 may be configured to have the same structure, or, of course, may be configured to have different structures.

[0080] The second display unit 33 may include a control unit and a data terminal, wherein the data terminal may be a server, an industrial computer, a notebook computer, a tablet computer, a smart phone, a smart watch or other devices.

[0081] Optionally, the second display unit 33 may only feed back the parameter value. Of course, the second display unit 33 may also feed back the load value-parameter value correspondence relationship (calibration curve).

[0082] As an optional implementation, the collecting member 31 includes a magnetic attraction portion, and the collecting member 31 is adsorbed and connected to the fastener 200 via the magnetic attraction portion.

[0083] The collecting member 31 and the fastener 200 are arranged to be connected in a magnetically attractive manner, so as to facilitate the connection and separation of the two, thereby improving the calibration efficiency of the calibration device 100, and ensuring the stability of the connection between the collecting member 31 and the fastener 200, so as to ensure that the data detected by the second detection component 30 is more accurate, thereby improving the reliability of the calibration device 100.

[0084] Optionally, a magnetic attraction portion is provided on one side of the collecting member 31 close to the fastener 200 to facilitate positioning and connection.

[0085] Optionally, the magnetic attraction portion includes a magnet or the like.

[0086] As an optional implementation, the second display unit 33 includes one of an electromagnetic ultrasonic testing device and a piezoelectric ultrasonic testing device.

[0087] Setting the second display unit 33 as one of an electromagnetic ultrasonic testing device and a piezoelectric ultrasonic testing device is beneficial to ensuring the stability and reliability of the calibration result of the calibration device 100 and improving the versatility of the calibration device 100 .

[0088] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A calibration device (100) for calibrating a fastener (200) connected to a part to be connected (300), characterized in that: The calibration device (100) comprises: A loading member (10) connectable to the fastener (200), the loading member (10) being configured to apply a predetermined load to the fastener (200); A first detection component (20), comprising a first detection unit (21) and a first display unit (22), wherein the first detection unit (21) can be arranged on a side of the fastener (200) close to the member to be connected (300) along its length direction (X), the first detection unit (21) being configured to detect a load value of the fastener (200) after being loaded by the loading member (10), and the first display unit (22) being connected to the first detection unit (21) and configured to feed back the load value; A second detection component (30) is arranged on a side of the fastener (200) away from the member to be connected (300) along the length direction (X), and the second detection component (30) is configured to detect a parameter value of the fastener (200) after being loaded by the loading member (10), wherein the parameter value includes any one of the acoustic time, the acoustic time ratio, the length of the fastener (200), and a stress parameter.

2. The calibration device (100) according to claim 1, characterized in that: The loading member (10) comprises a main body (11) and a sleeve (12) which are connected and arranged, and the sleeve (12) is covered on a side of the fastener (200) which is away from the member to be connected (300) along the length direction (X).

3. The calibration device (100) according to claim 2, characterized in that: The loading member (10) comprises any one of a hydraulic stretching device, an electric stretching device, a hydraulic wrench, and an electric wrench.

4. The calibration device (100) according to claim 1, characterized in that: The first detection component (20) comprises a first signal line (23), and the first signal line (23) is detachably connected between the first detection part (21) and the first display part (22).

5. The calibration device (100) according to claim 1, characterized in that: The first detection part (21) comprises a detection patch (211), and the detection patch (211) is attached to the outer periphery of the fastener (200).

6. The calibration device (100) according to claim 5, characterized in that: The marking device (100) comprises a gasket, which is configured to be sleeved and clamped between the fastener (200) and the part to be connected (300).

7. The calibration device (100) according to claim 1, characterized in that: The first detection portion (21) comprises a detection washer (212), and the detection washer (212) is sleeved and clamped between the fastener (200) and the part to be connected (300).

8. The calibration device (100) according to claim 1, characterized in that: The second detection component (30) comprises a collection member (31), a second signal line (32) and a second display unit (33); the collection member (31) can be in contact with a side of the fastener (200) away from the to-be-connected member (300) along the length direction (X); the second signal line (32) can be detachably connected between the collection member (31) and the second display unit (33); and the second display unit (33) is configured to feed back the parameter value.

9. The calibration device (100) according to claim 8, characterized in that: The collecting member (31) comprises a magnetic attraction portion, and the collecting member (31) is adsorbed and connected to the fastener (200) via the magnetic attraction portion.

10. The calibration device (100) according to claim 8, characterized in that: The second display part (33) comprises one of an electromagnetic ultrasonic testing device and a piezoelectric ultrasonic testing device.

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