Nut torque detection device

Abstract

The utility model discloses a nut torque detection device, including base, fixed module, upper cover, torque wrench, bolt rod and nut, the base upper surface fixedly connected with fixed module, and the fixed module surface detachably connected with upper cover, and the fixed module surface embedding connection has the fixed sleeve of uniform arrangement, and the fixed sleeve surface is equipped with the fixed groove of the bolt rod for placing, the utility model discloses through air pressure regulation clamping force, can firmly fix bolt rod and avoid displacement when detecting, and adapt precision bolt detection, effectively avoid the detection data fluctuation caused by the nonuniformity of clamping force, and the torque value reading accuracy is greatly improved, through solenoid valve control gas path, also can be linked with production line automation system, reduces manual operation step, solves the pain point of traditional device " change specification must change fixture", and detachable upper cover lets workpiece assembly and disassembly process simple, and the operator need not professional training can be on hand, and the use threshold is reduced significantly.

Description

Technical Field

[0001] This utility model relates to the field of nut torque detection technology, specifically a nut torque detection device. Background Technology

[0002] Automotive wiring harnesses are the core of a vehicle's electrical network; without them, there is no automotive electrical system. Therefore, the reliability of wiring harnesses is crucial and requires extensive testing to verify their reliability. Wiring harnesses are installed in vehicle doors or other frequently moving parts. Due to the significant movement and operation during daily use, their reliability is greatly tested. If a nut is missing from the wiring harness installation, insufficient torque can cause the vehicle to stall on bumpy roads. Therefore, specialized equipment is needed to test and verify product performance. Thus, those skilled in the art have provided a nut torque detection device to address the problems mentioned in the background section. Utility Model Content

[0003] The purpose of this invention is to provide a nut torque detection device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A nut torque detection device includes a base, a fixing module, a top cover, a torque wrench, a bolt rod, and a nut. The fixing module is fixedly connected to the upper surface of the base, and the top cover is detachably connected to the surface of the fixing module. The fixing module has evenly arranged fixing sleeves embedded in its surface, and the fixing sleeves have fixing grooves for placing the bolt rod.

[0006] Furthermore, the fixed sleeve has an air cavity inside, and an air nozzle is provided at the inlet end of the air cavity. A deformable thin wall is formed between the air cavity and the inner side wall of the fixed sleeve, and the deformable thin wall abuts against the bolt rod.

[0007] Furthermore, the side wall of the fixed module is fixedly connected to an air inlet pipe, and the outlet end of the air inlet pipe is connected to an air nozzle on the fixed sleeve.

[0008] Furthermore, the inlet end of the air intake pipe is connected to an external air source, and a solenoid valve is installed at the inlet end of the air intake pipe.

[0009] Furthermore, a bolt rod is fixedly connected to the inner sidewall of the fixing groove, and a nut is threaded onto the surface of the bolt rod.

[0010] Furthermore, the surface of the upper cover is provided with a socket, through which the output end of the torque wrench is connected to the nut.

[0011] By adopting the above technical solution

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This nut torque detection device has significant advantages in clamping reliability and detection accuracy. It adopts an "air chamber-deformation thin wall" clamping structure, which can firmly fix the bolt rod and prevent displacement during detection by adjusting the clamping force with air pressure. It is suitable for precision bolt detection. At the same time, the insertion hole of the upper cover forms a rigid positioning for the torque wrench, forcing the wrench and the bolt rod axis to be coaxial. This reduces the tilting error of traditional manual connection. Moreover, the air pressure clamping force is stable and controllable, effectively avoiding the fluctuation of detection data caused by uneven clamping force, and greatly improving the accuracy of torque value reading.

[0014] 2. It also excels in batch testing, automation adaptation, and operational versatility. Multiple fixing sleeves evenly distributed on the surface of the fixed module can simultaneously test multiple sets of components, improving efficiency compared to traditional single-station devices and meeting the needs of batch production. By controlling the air path through a solenoid valve, it can also be linked with the production line automation system, reducing manual operation steps. In addition, there is no need to change the fixture; different diameter bolt rods can be adapted simply by adjusting the air pressure, solving the pain point of traditional devices that require changing fixtures when changing specifications. Furthermore, the detachable top cover simplifies the workpiece loading and unloading process, allowing operators to get started without professional training, significantly lowering the barrier to entry. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a nut torque detection device;

[0016] Figure 2 An exploded view of a nut torque detection device;

[0017] Figure 3 A schematic diagram of the fixing module of a nut torque detection device;

[0018] Figure 4 This is a schematic diagram of the internal structure of a fixing sleeve for a nut torque detection device.

[0019] In the diagram: 1. Base; 2. Fixing module; 201. Fixing sleeve; 202. Fixing groove; 203. Deformable thin wall; 204. Air chamber; 205. Air nozzle; 206. Bolt rod; 207. Nut; 208. Air inlet pipe; 209. Solenoid valve; 3. Top cover; 301. Insertion hole; 4. Torque wrench. Detailed Implementation

[0020] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] Please see Figures 1-4This utility model provides an embodiment of a nut torque detection device, including a base 1, a fixing module 2, a top cover 3, a torque wrench 4, a bolt rod 206, and a nut 207. The fixing module 2 is fixedly connected to the upper surface of the base 1, and the top cover 3 is detachably connected to the surface of the fixing module 2. Evenly arranged fixing sleeves 201 are embedded in and connected to the surface of the fixing module 2. The fixing sleeves 201 have fixing grooves 202 for placing the bolt rod 206. An air chamber 204 is provided inside the fixing sleeves 201, and an air nozzle 205 is provided at the inlet end of the air chamber 204. The air chamber 204 and the fixing sleeves 207 are connected... 1. A deformable thin wall 203 is formed between the inner sidewalls. The deformable thin wall 203 abuts against the bolt rod 206. An air inlet pipe 208 is fixedly connected to the sidewall of the fixed module 2. The outlet end of the air inlet pipe 208 is connected to the air nozzle 205 on the fixed sleeve 201. The inlet end of the air inlet pipe 208 is connected to an external air source. A solenoid valve 209 is provided at the inlet end of the air inlet pipe 208. A bolt rod 206 is fixedly connected to the inner sidewall of the fixed groove 202. A nut 207 is threaded on the surface of the bolt rod 206. An insertion hole 301 is opened on the surface of the upper cover 3. The output end of the torque wrench 4 is connected to the nut 207 through the insertion hole 301.The bolt rod 206 to be tested is placed into the fixing groove 202 of the fixing sleeve 201 on the surface of the fixing module 2, ensuring that the axis of the bolt rod 206 coincides with the axis of the fixing groove 202. Then, the upper cover 3 is detachably connected to the surface of the fixing module 2, so that the insertion hole 301 of the upper cover 3 is aligned with the nut 207 at the top of the bolt rod 206, completing the workpiece pre-positioning. The external air source is turned on, and the air inlet pipe 208 is controlled by the solenoid valve 209 to supply air to the air chamber 204 inside the fixing sleeve 201. The air pressure in the air chamber 204 is... Raise the pressure, pushing the deformable thin wall 203 between the air chamber 204 and the inner wall of the fixing sleeve 201 to deform towards the center of the fixing groove 202 until the deformable thin wall 203 tightly abuts against the outer wall of the bolt rod 206, achieving a non-damaging clamping of the bolt rod 206. Then, precisely align the output end of the torque wrench 4 with the nut 207 through the insertion hole 301 of the upper cover 3. The insertion hole 301 ensures that the torque wrench 4 and the bolt rod 206 are coaxial, reducing tilting errors. Operate according to testing requirements (dynamic installation or static verification). Torque wrench 4: For dynamic testing, apply torque to the preset value and confirm compliance via the torque wrench 4 alarm. For static testing, slowly apply reverse force and read the "breakthrough torque" (residual torque) before the nut 207 loosens to determine if it meets design requirements. After testing, close the solenoid valve 209, depressurize the air chamber 204, and allow the deformed thin wall 203 to naturally reset. Remove the top cover 3, take out the bolt rod 206, and complete a single test. For batch testing, multiple fixing sleeves 201 evenly arranged on the fixing module 2 can be used for synchronous operation to improve efficiency. The structure of "air chamber 204-deformed thin wall 203" in this utility model uses air pressure to achieve undamaged clamping of the bolt rod 206 with stable and controllable force. The insertion hole 301 of the top cover 3 makes the torque wrench 4 coaxial with the bolt rod 206, with small tilt error and improved testing accuracy. Multiple fixing sleeves 201 support batch testing, increasing efficiency. It can also be linked to an automated system without changing clamps to adapt to different bolts. The top cover 3 is detachable, making operation convenient and lowering the barrier to entry.

[0022] Place the bolt rod 206 to be tested into the fixing groove 202 of the fixing sleeve 201 on the surface of the fixing module 2, ensuring that the axis of the bolt rod 206 coincides with the axis of the fixing groove 202. Then, detachably connect the upper cover 3 to the surface of the fixing module 2, aligning the insertion hole 301 of the upper cover 3 with the nut 207 at the top of the bolt rod 206 to complete the workpiece pre-positioning. Turn on the external air source, and control the air inlet pipe 208 to supply air to the air chamber 204 inside the fixing sleeve 201 through the solenoid valve 209. The air pressure in the air chamber 204 increases, pushing the deformable thin wall 203 between the air chamber 204 and the inner side wall of the fixing sleeve 201 to deform towards the center of the fixing groove 202 until the deformable thin wall 203 tightly abuts against the outer wall of the bolt rod 206, achieving non-damaging clamping of the bolt rod 206. Then, connect the output end of the torque wrench 4 through... The insertion hole 301 of the upper cover 3 precisely aligns with the nut 207. The insertion hole 301 ensures that the torque wrench 4 and the bolt rod 206 are coaxial, reducing tilting errors. Depending on the testing requirements (dynamic installation or static verification), the torque wrench 4 is operated: for dynamic testing, the torque is applied to the preset value, and the torque wrench 4 alarm confirms that it is qualified; for static testing, the force is slowly applied in the opposite direction, and the "breakthrough torque" (residual torque) before the nut 207 is loosened is read to determine whether it meets the design requirements. After the test is completed, the solenoid valve 209 is closed, the air chamber 204 is depressurized, the deformed thin wall 203 naturally resets, the upper cover 3 is removed, the bolt rod 206 is taken out, and a single test is completed. If batch testing is required, multiple fixing sleeves 201 evenly arranged on the fixing module 2 can be operated synchronously to improve efficiency.

[0023] This nut 207 torque detection device boasts significant advantages in clamping reliability and detection accuracy. It employs a "air chamber 204 - deformable thin-walled 203" clamping structure, using air pressure to adjust the clamping force. This firmly secures the bolt rod 206, preventing displacement during testing and making it suitable for precision bolt testing. Simultaneously, the insertion hole 301 in the upper cover 3 provides rigid positioning for the torque wrench 4, forcing the wrench to be coaxial with the bolt rod 206 axis. This reduces the tilting error inherent in traditional manual connection, and the stable and controllable air pressure clamping force effectively avoids fluctuations in detection data caused by uneven clamping force, significantly improving the accuracy of torque value readings. The device excels in batch testing and automated applications. It also excels in adaptability and versatility of operation. Multiple fixing sleeves 201 evenly arranged on the surface of the fixing module 2 can simultaneously detect multiple groups of components, which improves efficiency compared to traditional single-station devices and meets the needs of mass production. The air circuit is controlled by the solenoid valve 209, and it can also be linked with the production line automation system to reduce manual operation steps. In addition, there is no need to change the fixture. Different diameter bolt rods 206 can be adapted simply by adjusting the air pressure, solving the pain point of "changing the fixture must be changed when changing the specification" in traditional devices. The detachable top cover 3 makes the workpiece loading and unloading process simple, and operators can get started without professional training, which significantly reduces the threshold for use.

[0024] This specification describes embodiments, but not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A nut torque detection device, characterized in that, The device includes a base (1), a fixing module (2), a top cover (3), a torque wrench (4), a bolt rod (206), and a nut (207). The fixing module (2) is fixedly connected to the upper surface of the base (1), and the top cover (3) is detachably connected to the surface of the fixing module (2). The fixing module (2) is embedded with evenly arranged fixing sleeves (201), and the surface of the fixing sleeves (201) is provided with fixing grooves (202) for placing the bolt rods (206).

2. The nut torque detection device according to claim 1, characterized in that, The fixed sleeve (201) is provided with an air chamber (204) inside, and an air nozzle (205) is provided at the inlet end of the air chamber (204). A deformable thin wall (203) is formed between the air chamber (204) and the inner sidewall of the fixed sleeve (201), and the deformable thin wall (203) abuts against the bolt rod (206).

3. The nut torque detection device according to claim 1, characterized in that, The side wall of the fixed module (2) is fixedly connected to an air inlet pipe (208), and the outlet end of the air inlet pipe (208) is connected to an air nozzle (205) on the fixed sleeve (201).

4. The nut torque detection device according to claim 3, characterized in that, The inlet end of the air intake pipe (208) is connected to an external air source, and a solenoid valve (209) is provided at the inlet end of the air intake pipe (208).

5. The nut torque detection device according to claim 1, characterized in that, A bolt rod (206) is fixedly connected to the inner wall of the fixing groove (202), and a nut (207) is threaded onto the surface of the bolt rod (206).

6. The nut torque detection device according to claim 1, characterized in that, The upper cover (3) has a socket (301) on its surface, and the output end of the torque wrench (4) is connected to the nut (207) through the socket (301).

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