Nut locking torque testing device

Abstract

The utility model relates to the field of torque testing, in particular to a nut locking torque testing device. Comprising a supporting base used for providing a stable supporting platform; the rotary transmission mechanism is arranged on the supporting base, comprises a torque sensor and is used for transmitting and measuring the locking torque acting on the nut and improving the measurement accuracy; one end of the adjustable clamping arm is fixed on the rotary transmission mechanism, the other end of the adjustable clamping arm is used for clamping a nut or a bolt head to be tested, the intelligent sensing assembly is embedded in the adjustable clamping arm, a specially prepared contact interface of the intelligent sensing assembly can reduce measurement deviation caused by design defects of a bolt contact surface, and the intelligent sensing assembly has an effect of inhibiting signal interference; wherein data feedback of the intelligent sensing assembly is used for optimizing an algorithm in the microcomputer control system so as to realize self-adaptive adjustment aiming at different working conditions of different types of nuts, and a display is used for intuitively displaying a test result.

Description

Technical Field

[0001] The utility model belongs to the technical field of nut locking torque testing, in particular to a nut locking torque testing device. Background Art

[0002] Nut locking torque test devices are mainly used in the machinery industry to detect the accuracy of the torque required for nut locking to ensure the safety and reliability of the connection. However, such devices currently have some limitations. For example, traditional devices mostly use spring scales to directly measure tension, which often leads to a decrease in accuracy in application scenarios with high locking torque requirements. In addition, the design of existing equipment does not take into account the contact surface between the sensor component and the bolt, which may cause position deviation of the sensor or signal interference during the measurement process, affecting the accuracy of the data. Furthermore, since most nut locking torque test devices lack a good adaptive adjustment mechanism, when used to test nuts of different sizes and types, it is easy for the test results to not accurately reflect the actual situation.

[0003] After searching, the cited publication number is CN221086413U, and the publication date is 2024-06-07. It is named as a nut locking torque test device, including a frame, a classification loading mechanism and a torque testing mechanism; the frame is provided with at least two test stations, each of which is provided with a tool bolt; the classification loading mechanism is provided on the frame, including a flexible vibration disk, a visual recognition component and a manipulator, the visual recognition component is provided above the flexible vibration disk and is connected to the manipulator, and is used to obtain the size information and position information of the nut to be tested, and control the manipulator to place the nuts to be tested of different specifications on the corresponding test stations; the torque testing mechanism is provided with at least two, and each corresponds to a test station, and is used to drive the nut to be tested and the matching tool bolt to rotate relative to each other, and sense the torque between the two. The nut locking torque test provided by the utility model can solve the problem of how to automatically identify nuts of different specifications and classify the nuts for locking torque testing.

[0004] The above embodiment still has the following defects: the problem of reduced accuracy often occurs in application scenarios with high locking torque requirements; in addition, the existing equipment does not take into account the contact surface between the sensor component and the bolt in its design, which may cause position deviation of the sensor during the measurement process or signal interference, affecting the accuracy of the data. Utility Model Content

[0005] To address the above-mentioned issues, the present invention provides a nut locking torque testing device, comprising a support base, a rotary transmission mechanism disposed on the support base, the rotary transmission mechanism including a torque sensor, an adjustable clamping arm fixed to one end of the rotary transmission mechanism, the other end of the adjustable clamping arm being used to clamp the nut to be tested, and a self-locking adjustment unit disposed on the adjustable clamping arm. An intelligent sensor assembly is embedded in the cavity of the adjustable clamping arm, and the intelligent sensor assembly further includes a microcomputer control system, the microcomputer control system being communicatively connected to the sensor assembly and the torque sensor, and the microcomputer control system is connected to a display and operation terminal.

[0006] Furthermore, a group of supporting feet are respectively installed at the four corner edges of the bottom of the support base, and each group of supporting feet is an adjustable structure.

[0007] Furthermore, a double gear system is installed inside the rotary transmission mechanism, and both ends of the adjustable clamping arm are designed as spherical joint connection structures.

[0008] Furthermore, the self-locking adjustment unit includes a series of micro gears and ratchet combinations, and the intelligent sensing component has a built-in strain gauge sensor made of piezoelectric ceramic material.

[0009] Furthermore, the intelligent sensing component is provided with a contact interface, and the surface of the contact interface is covered with a special insulating coating.

[0010] Furthermore, the microcomputer control system adopts a high-speed signal processor, which can process the real-time signal from the intelligent sensing component more quickly. The microcomputer control system further includes a storage module, in which a variety of thread model data are preset.

[0011] Furthermore, the microcomputer control system is equipped with a dedicated interface, which can be interconnected with a smart phone or other wireless devices.

[0012] Furthermore, the display operation terminal is integrated with a graphical user interface and has a custom curve comparison function.

[0013] The beneficial effects of the utility model are:

[0014] 1. A database or lookup table must be built within the control system to store information about various known nut types and their corresponding key parameters such as recommended torque settings. This database must be scalable and upgradeable so that it can be continuously updated and maintained as new nut types are introduced.

[0015] 2. Its surface has been specially treated and coated with a special insulating coating material with excellent performance. This special insulating coating effectively reduces the physical damage caused by friction between the nut and the contact interface, which not only extends the service life of the entire device, but also brings better surface adaptability and contact stability to the device.

[0016] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 The figure shows a schematic structural diagram of a nut locking torque testing device according to an embodiment of the present utility model;

[0019] Figure 2 Shows a schematic structural diagram of a microcomputer control system according to an embodiment of the present utility model;

[0020] Figure 3 The figure shows a schematic structural diagram of a display operation terminal according to an embodiment of the present utility model.

[0021] In the figure: 1. Support base; 2. Rotary transmission mechanism; 3. Adjustable clamping arm; 4. Intelligent sensing component; 5. Microcomputer control system; 6. Display operation terminal; 7. Support foot; 8. Double gear system; 9. Spherical joint connection structure; 10. Ratchet combination; 11. Strain gauge sensor; 12. Contact interface; 13. High-speed signal processor; 14. Thread model data; 15. Special interface; 16. Custom curve comparison function. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0023] The present invention provides a nut locking torque test device, which is exemplified by: Figure 1 、 Figure 2 and Figure 3 As shown, it includes a support base 1, a rotation transmission mechanism 2 is provided on the support base 1, the rotation transmission mechanism 2 includes a torque sensor, an adjustable clamping arm 3 is fixed to one end of the rotation transmission mechanism 2, the other end of the adjustable clamping arm 3 is used to clamp the nut to be tested, and a self-locking adjustment unit is provided on the adjustable clamping arm 3, an intelligent sensing component 4 is embedded in the cavity of the adjustable clamping arm 3, and the intelligent sensing component 4 further includes a microcomputer control system 5, the microcomputer control system 5 is communicatively connected to the above-mentioned sensing component and the torque sensor, and the microcomputer control system 5 is connected to a display operation terminal 6.

[0024] Specifically, the torque sensor is used to transmit and measure the tightening torque acting on the nut, replacing the traditional spring scale to improve measurement accuracy; the self-locking adjustment unit is used to achieve reliable locking of nuts of different specifications and prevent sensor displacement during measurement;

[0025] In addition, the specially prepared contact interface 12 of the intelligent sensing assembly 4 can reduce measurement deviations caused by design defects of the bolt contact surface and has the effect of suppressing signal interference. The microcomputer control system 5 is communicatively connected to the above-mentioned sensing assembly and torque sensor, and integrates an algorithm to dynamically adjust the adaptive torque compensation during the nut tightening test, making the test more accurate.

[0026] Furthermore, a display terminal 6, electrically connected to the microcomputer control system 5, allows the user to set parameters and displays real-time torque data, ensuring efficient and reliable nut locking torque measurement. Data feedback from the intelligent sensor assembly 4 is used to optimize the algorithm in the microcomputer control system 5, enabling adaptive adjustments for different operating conditions for different nut types. The display then intuitively displays the test results.

[0027] A set of supporting feet 7 is respectively installed at the four corner edges of the bottom of the supporting base 1, and each set of supporting feet 7 is an adjustable structure.

[0028] Specifically, the support legs 7 are designed to adjust the height difference according to the flatness of the ground in the test environment, so as to improve the stability and parallelism of the entire test device and ensure uniform application of torque.

[0029] A double gear system 8 is installed inside the rotation transmission mechanism 2 , and both ends of the adjustable clamping arm 3 are designed as spherical joint connection structures 9 .

[0030] Specifically, one gear in the dual gear system 8 is responsible for transmitting torque, while the other is designed with a precise tooth pitch to improve the accuracy and response speed of the torque sensor.

[0031] In addition, the spherical joint link structure 9 allows a small amount of angle adjustment in a fixed state without affecting torque transmission, thereby improving the fit of the clamped parts under non-parallel conditions.

[0032] The self-locking adjustment unit includes a series of micro gears and ratchet assemblies 10, and the intelligent sensing component 4 has a built-in strain gauge sensor 11 made of piezoelectric ceramic material.

[0033] Specifically, when locking nuts, these micro devices ensure a stable locking process without applying excessive preload stress, while preventing locking errors caused by reaction forces;

[0034] In addition, the strain gauge sensor 11 can still maintain high sensitivity under high load and is less likely to experience zero drift when under pressure for a long time.

[0035] The intelligent sensing component 4 is provided with a contact interface 12 , and the surface of the contact interface 12 is covered with a special insulating coating.

[0036] Specifically, the insulating coating not only reduces the wear on the surface of the nut but also has good electromagnetic shielding properties, thereby reducing measurement deviations caused by poor contact and signal distortion caused by electromagnetic interference.

[0037] The microcomputer control system 5 uses a high-speed signal processor 13, which can more quickly process the real-time signal transmitted by the intelligent sensor component 4. The microcomputer control system 5 further includes a storage module, in which a variety of thread model data 14 are preset.

[0038] Specifically, the high-speed signal processor 13 has a self-fault diagnosis function to ensure that any sudden fault will not affect the accuracy of the data;

[0039] In addition, the various thread model data 14 are automatically matched with the optimal torque parameters according to the nut type that has been set or scanned before starting the test, which simplifies the operator's configuration process and enhances the adaptability range.

[0040] The microcomputer control system 5 is equipped with a dedicated interface 15 , which can be interconnected with a smartphone or other wireless devices.

[0041] Specifically, the dedicated interface 15 facilitates the operator to remotely set test conditions and obtain test results, thereby improving the operational flexibility of the device.

[0042] The display operation terminal 6 is integrated with a graphical user interface and has a custom curve comparison function 16 .

[0043] Specifically, a curve chart showing the difference between the torque fluctuation during the test and the expected standard can be displayed simultaneously to assist in analyzing and evaluating the accuracy of the torque measurement.

[0044] How it works

[0045] When using this device, first place the support base 1 on a stable work surface to ensure that the entire device is in a state where it will not accidentally slide or tip over. The rotary transmission mechanism 2 is firmly mounted through the support base 1, and a torque sensor is integrated on it to transmit and measure the torque acting on the nut. In order to begin testing the nut or bolt head, the user will adjust the adjustable clamping arm 3 to the appropriate position so that the item to be tested can be securely fixed without slipping. This fixing process relies on the locking mechanism provided by the self-locking adjustment unit on the clamping arm, which not only ensures that nuts of various sizes and shapes can be securely locked, but also ensures that there will be no additional position changes during the test that interfere with data collection.

[0046] At the same time, the intelligent sensing assembly 4, located deep within the adjustable clamping arm 3, comes into play. Its precisely designed contact area perfectly matches the nut, minimizing the impact of surface imperfections and improving measurement accuracy. It also effectively mitigates the negative effects of external noise and other electronic signals on test data. All of this sensed information is transmitted to the microcomputer control system 5, which communicates with it. Here, a specialized control algorithm evaluates and adapts to the specific characteristics of the nut being measured, dynamically adjusting the torque compensation strategy during the test. This intelligent adjustment allows the entire experiment to be executed in the most appropriate and efficient detection mode for each individual object.

[0047] Finally, after processing the information, the microcomputer control system 5 provides feedback to the user via the connected display and operation terminal 6. Here, users can conveniently pre-set various detailed instructions and obtain optimized, adjusted actual measurement values ​​and other relevant torque data. This layout allows every worker to quickly grasp the core information they are concerned about, without having to get lost in lengthy and complex equipment operating manuals. This greatly enhances the value and efficiency of the equipment throughout the workplace. This integrated design not only simplifies the operating procedures but also improves measurement accuracy and reliability, making testing more scientific and intelligent.

[0048] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A nut locking torque testing device, comprising a support base (1), characterized in that: The support base (1) is provided with a rotation transmission mechanism (2), the rotation transmission mechanism (2) includes a torque sensor, an adjustable clamping arm (3) is fixed to one end of the rotation transmission mechanism (2), the other end of the adjustable clamping arm (3) is used to clamp the nut to be tested, and a self-locking adjustment unit is provided on the adjustable clamping arm (3), an intelligent sensor component (4) is embedded in the cavity of the adjustable clamping arm (3), and the intelligent sensor component (4) further includes a microcomputer control system (5), the microcomputer control system (5) is communicatively connected to the above-mentioned sensor component and the torque sensor, and the microcomputer control system (5) is connected to a display operation terminal (6).

2. The nut locking torque testing device according to claim 1, characterized in that: A group of supporting feet (7) is respectively installed at the four corner edges of the bottom of the supporting base (1), and each group of supporting feet (7) is an adjustable structure.

3. The nut locking torque testing device according to claim 1, characterized in that: The rotary transmission mechanism (2) is internally provided with a double gear system (8), and both ends of the adjustable clamping arm (3) are designed as spherical joint connection structures (9).

4. The nut locking torque testing device according to claim 1, characterized in that: The self-locking adjustment unit comprises a series of micro gears and ratchet combinations (10), and the intelligent sensing component (4) has a built-in strain gauge sensor (11) made of piezoelectric ceramic material.

5. The nut locking torque testing device according to claim 1, characterized in that: The intelligent sensing component (4) is provided with a contact interface (12), and the surface of the contact interface (12) is covered with a layer of insulating coating.

6. The nut locking torque testing device according to claim 1, characterized in that: The microcomputer control system (5) adopts a high-speed signal processor (13), and the high-speed signal processor (13) can process the real-time signal transmitted by the intelligent sensor component (4) more quickly. The microcomputer control system (5) further includes a storage module, and the storage module is preset with multiple thread model data (14).

7. The nut locking torque testing device according to claim 6, characterized in that: The microcomputer control system (5) is equipped with a dedicated interface (15) capable of interconnecting with a smartphone or wireless device.

8. The nut locking torque testing device according to claim 1, characterized in that: The display operation terminal (6) is integrated with a graphical user interface and has a custom curve comparison function (16).

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