Detection jig for tensile test of steel nut
By designing a combination device for nut fixing fixture, tension bar and fixing spacer, the problem of nut ejection in tensile strength test is solved, and a safe and efficient nut tensile test is achieved, ensuring the safety of the test and the structure of the device strength.
Patent Information
- Application Number
- CN202420605380.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-27
AI Technical Summary
In the tensile strength test of steel nuts, the nut is prone to eject due to tension, resulting in safety hazards. The prior art is difficult to effectively prevent the nut from ejecting, affecting the detection safety.
Design a detection device including a nut fixing fixture, a tension bar and a fixing spacer. The front end of the nut fixing fixture has an opening and groove structure. The tension bar is connected to the fixing spacer, and the fixing spacer is on the bottom surface of the opening of the nut fixing fixture. , block the downward pressure of the nut, avoid the injection of the nut, and improve the stability of the device through the butt handle and lock structure.
Effectively prevent the nut from popping out during tensile tests, improve detection safety, ensure the structural strength of the device and the simplicity of operation, avoid deformation of the nut fixing fixture, and improve detection safety.
Smart Images
Figure CN222212481U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nut tensile testing, in particular to a detection jig used for tensile testing of steel nuts. Background Art
[0002] Fastener nuts include flange locking nuts, wheel locking nuts, other locking nuts, etc. An important test for nuts is tensile strength. During conventional tensile strength tests, the pulled-out nuts often eject. In order to reduce safety hazards and avoid ejection problems during nut testing, a new tensile testing fixture needs to be designed. Summary of the invention
[0003] The technical problem to be solved by the utility model is to provide a detection fixture for tensile testing of steel nuts, which has the characteristics of high structural strength, simple operation, avoiding the nut popping out of the detection device when the nut is pulled out, and improving the safety level during detection.
[0004] The technical solution adopted by the utility model to solve its technical problems is: to provide a detection fixture for tensile testing of steel nuts, including a nut fixing fixture, a tension rod and a fixed gasket, the front end of the nut fixing fixture is provided with an opening, the bottom of the nut fixing fixture is provided with a groove structure, the tension rod is installed in the groove structure, the upper end of the tension rod is sleeved with a plurality of stacked fixed gaskets, the fixed gasket is arranged on the bottom surface of the opening of the nut fixing fixture, a docking handle is installed in the middle of the upper end surface of the nut fixing fixture, and the upper side of the fixed gasket is provided with a nut structure docking with the upper end of the tension rod.
[0005] In the technical solution, a nut fixing fixture is provided so that during the tensile test, the nut is inside the nut fixing fixture to block the nut. When the nut is pulled out, the nut will not be ejected from the nut fixing fixture, thereby ensuring the safety of the test. At the same time, a fixed gasket is used to block the downward pressure of the nut to avoid direct squeezing with the nut fixing fixture during the test, causing deformation of the nut fixing fixture. A docking handle is used to facilitate docking with the upper tension device. A tension rod is provided as a mounting base for the nut structure, and is also docked with the lower tension device.
[0006] As a supplement to the present technical solution, a cover plate is installed on the front side of the nut fixing fixture, and the left side of the cover plate and the left side of the nut fixing fixture are connected by a hinge structure, and the closing and opening of the cover plate are achieved by installing the hinge structure.
[0007] As a supplement to the present technical solution, a docking lock is provided in the middle of the right side of the nut fixing fixture, and a locking plate structure matching the docking lock is installed on the right side of the cover plate. The docking lock and the locking plate structure are provided to achieve locking of the cover plate.
[0008] As a supplement to the technical solution, a transparent observation window is provided in the middle of the cover plate, and the observation window is installed to facilitate observation of the internal test conditions.
[0009] As a supplement to the present technical solution, the upper and lower ends of the docking handle are both provided with convex ring structures, and a number of friction protrusions are evenly arranged in the middle of the docking handle. By providing the convex ring structure and the friction protrusions, the docking firmness with the upper pulling device is improved.
[0010] As a supplement to the present technical solution, a circle of limiting protrusions is provided in the middle of the upper end surface of the fixed gasket, and a limiting groove matching the limiting protrusions is provided on the lower end surface of the fixed gasket, so as to increase the stress between the fixed gaskets and avoid local displacement when the fixed gaskets are deformed.
[0011] Beneficial effects: The utility model relates to a detection jig for tensile testing of steel nuts. By setting a nut fixing jig, during the tensile test, the nut is inside the nut fixing jig to block the nut. When the nut is pulled out, the nut will not be ejected from the nut fixing jig, thereby ensuring the safety of the test. At the same time, a fixed gasket is used to block the downward pressure of the nut to avoid direct squeezing with the nut fixing jig during the test, which causes deformation of the nut fixing jig. A docking handle is used to facilitate docking with an upper tension device. A tension rod is provided as a mounting base for the nut structure, and is also docked with the lower tension device. The utility model has the characteristics of high structural strength, easy operation, avoiding the nut popping out of the detection device when the nut is pulled out, and improving the safety during detection. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is the front view of the utility model;
[0013] Figure 2 It is a right view of the utility model;
[0014] Figure 3 It is a top view of the fixing gasket described in the utility model;
[0015] Figure 4 It is a structural view of the groove structure described in the utility model.
[0016] Illustration: 1. Nut fixing fixture, 2. Cover plate, 3. Locking plate structure, 4. Docking lock buckle, 5. Docking handle, 6. Friction protrusion, 7. Convex ring structure, 8. Hinge structure, 9. Observation window, 10. Fixing gasket, 11. Tension rod, 12. Nut structure, 13. Groove structure, 14. Limiting protrusion. DETAILED DESCRIPTION
[0017] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.
[0018] The embodiment of the utility model relates to a detection fixture for tensile testing of steel nuts, such as Figure 1 As shown in FIG. 3 , the nut fixing jig 1 comprises a nut fixing jig 1, a tension rod 11 and a fixing gasket 10. The front end of the nut fixing jig 1 is provided with an opening, the bottom of the nut fixing jig 1 is provided with a groove structure 13, the tension rod 11 is installed in the groove structure 13, the upper end of the tension rod 11 is sleeved with a plurality of stacked fixing gaskets 10, the fixing gasket 10 is arranged on the bottom surface of the opening of the nut fixing jig 1, a docking handle 5 is installed in the middle of the upper end surface of the nut fixing jig 1, and the upper side of the fixing gasket 10 is provided with a nut structure 12 docking with the upper end of the tension rod 11.
[0019] In the technical solution, a nut fixing jig 1 is provided so that during the tensile test, the nut is inside the nut fixing jig 1 to block the nut. When the nut is pulled out, the nut will not be ejected from the nut fixing jig 1, thereby ensuring the safety of the test. At the same time, a fixed gasket 10 is used to block the downward pressure of the nut to avoid direct squeezing with the nut fixing jig 1 during the test, causing deformation of the nut fixing jig 1. A docking handle 5 is used to facilitate docking with an upper tension device. A tension rod 11 is provided to serve as a mounting base for a nut structure 12, and also docks with a lower tension device.
[0020] As a supplement to the present technical solution, a cover plate 2 is installed on the front side of the nut fixing jig 1, and the left side of the cover plate 2 and the left side of the nut fixing jig 1 are connected through a hinge structure 8, and the closing and opening of the cover plate 2 are achieved by installing the hinge structure 8.
[0021] As a supplement to the present technical solution, a docking lock 4 is provided in the middle of the right side of the nut fixing fixture 1, and a locking plate structure 3 matching the docking lock 4 is installed on the right side of the cover plate 2. The docking lock 4 and the locking plate structure 3 are provided to lock the cover plate 2.
[0022] As a supplement to the present technical solution, a transparent observation window 9 is provided in the middle of the cover plate 2, and the observation window 9 is installed to facilitate observation of the internal test conditions.
[0023] As a supplement to the present technical solution, the upper and lower ends of the docking handle 5 are provided with a convex ring structure 7, and a plurality of friction protrusions 6 are evenly arranged in the middle of the docking handle 5. By providing the convex ring structure 7 and the friction protrusion 6, the docking firmness with the upper tension device is improved.
[0024] As a supplement to the present technical solution, a circle of limiting protrusions 14 is provided in the middle of the upper end surface of the fixing gasket 10, and a limiting groove matching the limiting protrusions 14 is provided on the lower end surface of the fixing gasket 10, so as to increase the stress between the fixing gaskets 10 and avoid local displacement when the fixing gasket 10 is deformed.
[0025] Example
[0026] When conducting a nut test, first insert the upper end of the tension rod 11 into the groove structure 13, and then clamp and dock the lower end of the tension rod 11 with the tension device. After completion, stack no less than three fixed gaskets 10, and then sleeve them on the upper end of the tension rod 11, and the fixed gasket 10 is located on the front opening bottom surface of the nut fixing fixture 1. Then, the nut structure 12 is threadedly docked with the upper end of the tension rod 11 through the threaded structure, and then the docking handle 5 is docked with the upper tension device, and then the tension device is started to pull out the tension rod 11. When the nut structure 12 and the tension rod 11 are forced to separate due to tension, record the applied tension value of the tension device and compare it with the standard to be achieved. If the test value is greater than the standard, it means that the nut structure 12 is qualified, and the same batch of products are sampled and tested during the test.
[0027] The above is a detailed introduction to a detection fixture for tensile testing of steel nuts provided by the present application. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea; at the same time, for general technical personnel in this field, according to the idea of the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.
Claims
1. A test fixture for tensile testing of steel nuts. Features: The invention comprises a nut fixing fixture (1), a tension rod (11) and a fixing gasket (10); the front end of the nut fixing fixture (1) is provided with an opening; the bottom of the nut fixing fixture (1) is provided with a groove structure (13); the tension rod (11) is installed in the groove structure (13); the upper end of the tension rod (11) is sleeved with a plurality of stacked fixing gaskets (10); the fixing gasket (10) is arranged on the bottom surface of the opening of the nut fixing fixture (1); a docking handle (5) is installed in the middle of the upper end surface of the nut fixing fixture (1); and the upper side of the fixing gasket (10) is provided with a nut structure (12) docked with the upper end of the tension rod (11).
2. A detection jig for tensile testing of steel nuts according to claim 1, Features: A cover plate (2) is installed on the front side of the nut fixing jig (1), and the left side of the cover plate (2) and the left side of the nut fixing jig (1) are butted together via a hinge structure (8).
3. A detection jig for tensile testing of steel nuts according to claim 2, Features: A docking lock buckle (4) is provided at the middle part of the right side of the nut fixing fixture (1), and a locking plate structure (3) matching the docking lock buckle (4) is installed at the right side of the cover plate (2).
4. A detection jig for tensile testing of steel nuts according to claim 2, Features: A transparent observation window (9) is arranged in the middle of the cover plate (2).
5. A detection jig for tensile testing of steel nuts according to claim 1, Features: The upper and lower ends of the docking handle (5) are both provided with convex ring structures (7), and a plurality of friction protrusions (6) are evenly arranged in the middle of the docking handle (5).
6. A detection jig for tensile testing of steel nuts according to claim 1, Features: A circle of limiting protrusions (14) is arranged in the middle of the upper end surface of the fixing gasket (10), and a limiting groove matching the limiting protrusions (14) is arranged on the lower end surface of the fixing gasket (10).