A screw hardness detection device

By using the adjustment arm and control slot structure with the insertion slot, combined with springs and high-strength alloy adjustment plates, the problem of unstable fixing in screw testing is solved, thus achieving accuracy in screw hardness testing and stability of the device.

CN224552878UActive Publication Date: 2026-07-24DONGGUAN SHENGYING HARDWARE PRODUCTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN SHENGYING HARDWARE PRODUCTS CO LTD
Filing Date
2025-06-19
Publication Date
2026-07-24

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Abstract

The utility model relates to detection device technical field, and disclose a screw hardness detection device, including operation platform, the top fixedly connected with detection platform of operation platform, the top of detection platform is installed with detection mechanism, both sides of detection platform all are fixedly connected with the adjusting arm, the inside of adjusting arm is provided with adjusting groove, the inside sliding connection of adjusting groove has the adjusting board, the bottom of adjusting board is provided with straight groove, the both ends in the straight groove are all provided with a plurality of insertion slot. This screw hardness detection device, the staff moves the control block to the inside of control groove, and the control block drives the plug to move in the process of moving, and drives the plug to remove the spacing between the insertion slot, and work is moved adjusting board, so that the adjusting board will be limited in the hole in the adjusting board inside screw, and drive detection mechanism detects the screw, avoids the screw to shake or dump.
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Description

Technical Field

[0001] This utility model relates to the field of testing device technology, and in particular to a screw hardness testing device. Background Technology

[0002] In the field of mechanical manufacturing and assembly, screws are key fasteners, and their quality directly affects the stability, safety, and reliability of the entire mechanical system. Screw hardness is one of the important indicators for measuring its quality, and accurate testing of screw hardness plays an indispensable role in ensuring product quality and preventing mechanical failures.

[0003] During the testing process, hardness testing usually requires the application of large pressure. The pressure applied by the testing indenter to the screw surface can reach hundreds of kilograms or even higher. Such enormous pressure on the screw will cause displacement or tilting if the screw is not securely fixed. The tilting of the screw will not only prevent the testing indenter from accurately applying the predetermined testing point, resulting in deviations in the test data and failing to accurately reflect the hardness of the screw, but may also damage the testing device itself. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the existing technology lacks a target for effective fixing structures. To address this, we propose a screw hardness testing device.

[0005] To achieve the above objectives, this application adopts the following technical solution: a screw hardness testing device, including an operating table, a testing platform fixedly connected to the top of the operating table, a testing mechanism installed at the top of the testing platform, adjusting arms fixedly connected to both sides of the testing platform, an adjusting groove opened inside the adjusting arm, an adjusting plate slidably connected inside the adjusting groove, a straight groove opened at the bottom end of the adjusting plate, several slots opened at both ends of the straight groove, a control groove opened at both ends of the adjusting arm, a control block slidably connected inside the control groove, a through groove opened at the top of the control groove, and an insert fixedly connected to the top of the control block.

[0006] Preferably, the size of the insert is adapted to the size of the slot, and the surface of the insert is inserted into the interior of the slot.

[0007] Preferably, the control groove has sliding grooves on both sides, and the control block has sliders fixedly connected to both sides, with the surface of the sliders slidingly connected to the inside of the sliding grooves.

[0008] Preferably, a storage spring is fixedly connected to the side of the control block near the inside of the control slot, and the side of the storage spring away from the control block is fixedly connected to the inside of the control slot.

[0009] Preferably, a return spring is fixedly connected to the side of the adjustment groove away from the adjustment plate, and the side of the return spring away from the adjustment groove is fixedly connected to the inside of the adjustment groove.

[0010] Preferably, the adjusting plate is made of a high-strength alloy.

[0011] Preferably, guide grooves are provided at both ends of the adjustment groove, and guide blocks are fixedly connected to both ends of the adjustment plate, with the surface of the guide block slidingly connected to the interior of the guide groove.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] In this invention, the operator moves the control block into the control slot. During the movement, the control block moves the insertion block and releases the limiting position between the insertion block and the slot. This works like moving the adjustment plate, which limits the screw in the hole inside the adjustment plate and drives the detection mechanism to detect the screw, preventing the screw from shaking or tipping over. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the adjusting arm structure of the present invention;

[0016] Figure 3 This is a partial cross-sectional view of the present invention.

[0017] Figure 4 This is a schematic diagram of the internal structure of the adjusting groove of this utility model;

[0018] Figure 5 This is a schematic diagram of the internal structure of the control slot of this utility model.

[0019] Legend: 1. Operating table; 2. Testing table; 3. Testing mechanism; 4. Adjusting arm; 5. Adjusting groove; 6. Adjusting plate; 7. Straight groove; 8. Slot; 9. Control groove; 10. Control block; 11. Through groove; 12. Insert block; 13. Slide groove; 14. Sliding block; 15. Storage spring; 16. Return spring; 17. Guide groove; 18. Guide block. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0021] Reference Figures 1-5As shown, this utility model provides a technical solution: a screw hardness testing device, including an operating table 1, a testing table 2 fixedly connected to the top of the operating table 1, a testing mechanism 3 installed at the top of the testing table 2, and adjusting arms 4 fixedly connected to both sides of the testing table 2. An adjusting groove 5 is provided inside the adjusting arm 4, and an adjusting plate 6 is slidably connected inside the adjusting groove 5. A straight groove 7 is provided at the bottom end of the adjusting plate 6, and several slots 8 are provided at both ends of the straight groove 7. A control groove 9 is provided at both ends of the adjusting arm 4, and a control block 10 is slidably connected inside the control groove 9. A through groove 11 is provided at the top end of the control groove 9, and an insert block 12 is fixedly connected to the top end of the control block 10. The operator moves the control block 10 into the control groove 9, causing the control block 10 to move the insert block 12 and release the limit between the insert block 12 and the slot 8. The operation involves moving the adjusting plate 6, so that the adjusting plate 6 limits the screw in the hole inside the adjusting plate 6, and drives the testing mechanism 3 to test the screw, preventing the screw from shaking or tipping over.

[0022] Reference Figure 4 As shown in this embodiment, the size of the insert 12 is adapted to the size of the slot 8, and the surface of the insert 12 is inserted into the interior of the slot 8. By adapting the size of the insert 12 to the size of the slot 8, the insert 12 can be firmly inserted into the slot 8 and is not easy to fall out, thus ensuring the stability and reliability of the device. When adjustment or disassembly is required, the insert 12 can be simply pulled out of the slot 8. The operation is simple and convenient, improving the practicality and flexibility of the device.

[0023] Reference Figure 5 As shown in this embodiment: Slide grooves 13 are provided on both sides of the control groove 9, and sliders 14 are fixedly connected to both sides of the control block 10. The surface of the slider 14 is slidably connected to the interior of the slide groove 13. When the operator moves the control block 10, the control block 10 drives the slider 14 to slide inside the slide groove 13. Through the above setting, the control block 10 can be effectively limited to prevent it from shaking during movement, thereby improving the stability of the control block 10 during movement. At the same time, by setting the slider 14 and the slide groove 13, the moving distance of the control block 10 can be limited, preventing the control block 10 from leaving the interior of the control groove 9, thereby improving the overall practicality.

[0024] Reference Figure 5As shown in this embodiment: a storage spring 15 is fixedly connected to the side of the control block 10 near the inside of the control slot 9, and the side of the storage spring 15 away from the control block 10 is fixedly connected to the inside of the control slot 9. When the operator pushes the slot 8 into the inside of the control slot 9, the slot 8 compresses the storage spring 15 to store force, and drives the plug 12 to release the limit between itself and the slot 8. After the operator adjusts the appropriate position of the adjustment plate 6, aligns the plug 12 with the slot 8 and releases the control block 10. Under the action of the rebound force of the storage spring 15, the plug 12 quickly inserts into the inside of the slot 8, forming a stable connection again.

[0025] Reference Figure 4 As shown in this embodiment: a return spring 16 is fixedly connected to the side of the adjustment groove 5 away from the adjustment plate 6. The side of the return spring 16 away from the adjustment groove 5 is fixedly connected to the inside of the adjustment groove 5. When the operator pushes the adjustment plate 6 into the adjustment groove 5, the adjustment plate 6 compresses the return spring 16 to store force. When the operator releases the limit of the adjustment plate 6, the adjustment plate 6 is quickly pushed out under the action of the return spring 16 and quickly fits the screw, which facilitates the operator to carry out the inspection work.

[0026] Reference Figure 4 As shown in this embodiment, the adjusting plate 6 is made of high-strength alloy. By making the adjusting plate 6 of high-strength alloy, the strength and hardness of the adjusting plate 6 are improved, making the adjusting plate 6 less prone to deformation or damage during use and extending the service life of the adjusting plate 6.

[0027] Reference Figure 4 As shown in this embodiment: guide grooves 17 are provided at both ends of the adjustment groove 5, and guide blocks 18 are fixedly connected to both ends of the adjustment plate 6. The surface of the guide block 18 is slidably connected to the inside of the guide groove 17. When the operator moves the adjustment plate 6, the adjustment plate 6 drives the guide block 18 to slide inside the guide groove 17. Through the above settings, the adjustment plate 6 can be made more stable during the movement, avoiding errors caused by shaking. At the same time, the sliding connection design between the guide block 18 and the guide groove 17 reduces the frictional resistance of the adjustment plate 6 during the movement, making the movement of the adjustment plate 6 smoother and improving work efficiency.

[0028] Working principle: By moving the control block 10 into the control slot 9, the operator moves the insertion block 12, releasing it from its limiting position with the slot 8. This is similar to moving the adjustment plate 6, which then limits the screw within its internal hole and drives the detection mechanism 3 to inspect the screw, preventing it from shaking or tipping over. The size of the insertion block 12 is matched to the size of the slot 8, ensuring it is securely inserted and unlikely to fall out, thus guaranteeing the stability and reliability of the device. When adjustment or disassembly is needed, simply remove the insertion block 12 from the slot 8. Simply pull it out; the operation is simple and convenient, improving the practicality and flexibility of the device. When the operator moves the control block 10, the control block 10 drives the slider 14 to slide inside the slide groove 13. Through the above setting, the control block 10 can be effectively limited to prevent it from shaking during movement, thereby improving the stability of the control block 10 during movement. At the same time, by setting the slider 14 and the slide groove 13, the movement distance of the control block 10 can be limited, preventing the control block 10 from leaving the control groove 9, thereby improving the overall practicality. When the operator pushes the slot 8 into the control groove 9, the insertion... The slot 8 compresses the storage spring 15 to store force, which in turn causes the insert block 12 to release its limit from the slot 8. After the operator adjusts the adjustment plate 6 to the appropriate position, they align the insert block 12 with the slot 8 and release the control block 10. Under the rebound force of the storage spring 15, the insert block 12 quickly inserts into the slot 8, forming a stable connection again. When the operator pushes the adjustment plate 6 into the adjustment slot 5, the adjustment plate 6 compresses the return spring 16 to store force. When the operator releases the limit of the adjustment plate 6, the return spring 16 quickly pushes the adjustment plate 6 out and swiftly engages the screw, facilitating the operator's inspection work. By using a high-strength alloy as the material for the adjusting plate 6, its strength and hardness are improved, making it less prone to deformation or damage during use and extending its service life. When the operator moves the adjusting plate 6, it drives the guide block 18 to slide inside the guide groove 17. This design makes the adjusting plate 6 more stable during movement, avoiding errors caused by shaking. At the same time, the sliding connection design between the guide block 18 and the guide groove 17 reduces the frictional resistance of the adjusting plate 6 during movement, making its movement smoother and improving work efficiency.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A screw hardness testing device, comprising an operating table (1), characterized in that: The top of the operating table (1) is fixedly connected to a detection table (2), and a detection mechanism (3) is installed on the top of the detection table (2). Adjusting arms (4) are fixedly connected to both sides of the detection table (2). An adjustment groove (5) is opened inside the adjustment arm (4). An adjustment plate (6) is slidably connected inside the adjustment groove (5). A straight groove (7) is opened at the bottom of the adjustment plate (6). Several slots (8) are opened at both ends inside the straight groove (7). A control groove (9) is opened at both ends of the adjustment arm (4). A control block (10) is slidably connected inside the control groove (9). A through groove (11) is opened at the top of the control groove (9). An insert block (12) is fixedly connected to the top of the control block (10).

2. The screw hardness testing device according to claim 1, characterized in that: The size of the insert (12) is adapted to the size of the slot (8), and the surface of the insert (12) is inserted into the interior of the slot (8).

3. The screw hardness testing device according to claim 1, characterized in that: The control groove (9) has sliding grooves (13) on both sides, and the control block (10) has sliders (14) fixedly connected to both sides. The surface of the sliders (14) is slidably connected to the inside of the sliding grooves (13).

4. The screw hardness testing device according to claim 1, characterized in that: A storage spring (15) is fixedly connected to the side of the control block (10) near the inside of the control groove (9), and the side of the storage spring (15) away from the control block (10) is fixedly connected to the inside of the control groove (9).

5. The screw hardness testing device according to claim 1, characterized in that: A return spring (16) is fixedly connected to the side of the adjustment groove (5) away from the adjustment plate (6), and the side of the return spring (16) away from the adjustment groove (5) is fixedly connected to the inside of the adjustment groove (5).

6. The screw hardness testing device according to claim 1, characterized in that: The adjusting plate (6) is made of high-strength alloy.

7. The screw hardness testing device according to claim 1, characterized in that: The adjustment groove (5) has guide grooves (17) at both ends, and the adjustment plate (6) has guide blocks (18) fixedly connected to both ends. The surface of the guide block (18) is slidably connected to the interior of the guide groove (17).