Tension detection device for mechanical measurement

Abstract

The utility model discloses a tensile force detection device for mechanical measurement, and relates to the technical field of mechanical measurement, a limiting mechanism comprises fixing plates fixed on two sides of a hook, one side of each fixing plate facing a cylinder is provided with a limiting groove, a limiting block is arranged in each limiting groove and can slide in each limiting groove, a spring is arranged in each limiting groove, a circular ring is sleeved outside the cylinder, and the circular ring is sleeved outside the cylinder. By arranging the limiting mechanism, the hook and the tension detection column can be quickly disassembled and assembled, the time needed for replacing the hook is effectively shortened, the efficiency of tension detection work is further improved, meanwhile, the effect of connecting the hook and the tension detection column through the limiting block and the arc-shaped groove is better than that of original threaded connection, and the practicability is high. And the test failure or danger caused by the slippery wire due to overlarge tensile force can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of mechanical measurement technology, specifically a tensile force testing device for mechanical measurement. Background Technology

[0002] Mechanical metrology is one of the earliest developed fields of metrology. It mainly includes the measurement and testing of mass, force, torque, hardness, pressure, vacuum, vibration, impact, rotational speed, constant acceleration, flow rate, velocity, and volume.

[0003] The push-pull force gauge with patent number CN205246254U has a cavity along the length of the central rod from the end face of the end that contacts the object being measured. The cavity has a support arm with a rod "L" shape, which includes a short side and a long side. The short side is located above the long side and is slidably connected to the inner wall of the cavity. The short side can slide along the depth direction of the cavity and cannot slide out of the cavity opening. The support arm can rotate around the end of its short side. When the short side slides to the opening of the cavity, rotating the support arm can make the side of its long side close to the inner wall of the cavity abut against the end face of the central rod.

[0004] However, research has shown that existing tensile testing devices still have the following shortcomings:

[0005] When replacing the hook in existing tensile testers, the hook is usually fixed to the tester by rotating it with a thread. This process takes a long time and cannot be completed quickly, thus wasting testing time. In addition, the thread may strip due to prolonged tension, which may lead to test failure. Therefore, it is necessary to optimize the tensile testing device for mechanical measurement through technological innovation and design optimization. Utility Model Content

[0006] Existing tensile testers typically use threads to rotate and fix the hook to the tester when replacement is needed. This process is time-consuming and wastes testing time. Furthermore, prolonged tension on the threads can cause stripping, potentially leading to test failure. To address these issues, this application provides a tensile testing device for mechanical measurement. By incorporating a limiting mechanism, the device allows for quick assembly and disassembly of the hook and tensile testing column, effectively reducing the time required for hook replacement and improving the efficiency of tensile testing. Additionally, the connection between the hook and the testing column using the limiting block and the arc-shaped groove is superior to the original threaded connection, preventing excessive tension that could lead to stripping and test failure or danger.

[0007] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0008] A tensile force testing device for mechanical measurement, comprising:

[0009] The tensile testing instrument body has a tensile testing column at its bottom end;

[0010] A hook is located at the bottom of the tensile testing column. The hook and the tensile testing column are connected by a limiting mechanism, which can quickly fix the hook and the tensile testing column.

[0011] In one possible implementation, a cylinder is fixed to the bottom of the tensile testing column, and a fixing block is fixed to the bottom of the cylinder. The hook is inserted into the fixing block to facilitate the connection between the hook and the tensile testing column.

[0012] In one possible implementation, a post is fixed to the bottom of the fixing block, and a slot is provided on the top of the hook, so that the post can be inserted into the slot to facilitate guiding the hook.

[0013] In one possible implementation, the limiting mechanism includes fixed plates fixed on both sides of the hook. The fixed plates have a limiting groove on the side facing the cylinder. A limiting block is provided in the limiting groove and can slide within the limiting groove. A spring is provided in the limiting groove. A ring is sleeved on the outside of the cylinder. An annular groove is provided on the ring. When the spring is in a compressed state, the limiting block will be inserted into the annular groove under the action of the spring. Since the annular groove blocks the limiting block, the connection function between the hook and the tension detection column is completed at this time.

[0014] In one possible implementation, one end of the spring is fixedly connected to the limiting block, and the other end of the spring is fixedly connected to the fixing plate to prevent the limiting block from falling out of the limiting groove.

[0015] In one possible implementation, the ring has an inclined groove that can accommodate the passing of a limiting block. When the limiting block is aligned with the inclined groove, the fixing plate is pulled down, and the limiting block is squeezed into the annular groove by the inclined groove. At this time, the limiting block can be removed from the annular groove, thereby completing the separation of the hook and the tension detection column.

[0016] In one possible implementation, the ring can rotate outside the cylinder, and a rotating block is fixed on the ring to facilitate rotating the ring so that the inclined groove on the ring is aligned with the limiting block, or so that the limiting block is not aligned with the inclined groove.

[0017] In one possible implementation, one end of the limiting block is set with an inclined surface facing the ring side. When the tension detection column and the hook are aligned and connected, the inclined surface of the limiting block will be squeezed into the limiting groove by the fixing block, without the need to manually press the limiting block into the limiting groove.

[0018] In summary, this utility model has at least one of the following beneficial technical effects:

[0019] 1. By setting a limit mechanism, the hook and tensile testing column can be quickly disassembled and assembled, which effectively reduces the time required to replace the hook and further improves the efficiency of tensile testing.

[0020] 2. Connecting the hook and tensile testing column by setting limit blocks and arc grooves is more effective than the original threaded connection. It will not cause stripping due to excessive tensile force, which could lead to test failure or danger. Attached Figure Description

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a partial structural schematic diagram of the present invention;

[0023] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0024] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0025] Figure 5 This is a schematic diagram of the ring structure of this utility model.

[0026] Reference numerals in the attached diagram: 1. Tensile testing instrument body; 2. Tensile testing column; 3. Hook; 4. Fixing plate; 5. Ring; 6. Fixing block; 7. Rotating block; 8. Insertion column; 9. Slot; 10. Cylinder; 11. Spring; 12. Limiting groove; 13. Limiting block; 14. Annular groove; 15. Inclined groove. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The instrument placement rack involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] This embodiment describes the specific structure of a tensile force testing device for mechanical measurement, as detailed in the following reference. Figure 1-Figure 5 As shown, a tensile force testing device for mechanical measurement includes:

[0029] The tensile testing instrument body 1 has a tensile testing column 2 at its bottom end;

[0030] Hook 3 is located at the bottom of the tensile testing column 2. Hook 3 is connected to the tensile testing column 2 through a limiting mechanism, which can quickly fix hook 3 and tensile testing column 2.

[0031] Furthermore, a cylinder 10 is fixed to the bottom of the tensile testing column 2, and a fixing block 6 is fixed to the bottom of the cylinder 10. The hook 3 is inserted into the fixing block 6, which facilitates the connection between the hook 3 and the tensile testing column 2.

[0032] When connecting the hook 3 to the fixing block 6, the hook 3 may be misaligned with the fixing block 6, which will affect the subsequent limiting operation. The bottom of the fixing block 6 is fixed with a post 8, and the top of the hook 3 is provided with a slot 9. The post 8 can be inserted into the slot 9 to facilitate the guidance of the hook 3.

[0033] Connecting the hook 3 and the fixing block 6 via threads requires rotating the hook 3, which takes a long time and is inconvenient for quick replacement. The limiting mechanism includes fixing plates 4 fixed on both sides of the hook 3. The fixing plates 4 have a limiting groove 12 on the side facing the cylinder 10. A limiting block 13 is provided in the limiting groove 12 and can slide within the limiting groove 12. A spring 11 is provided in the limiting groove 12. A ring 5 is sleeved on the outside of the cylinder 10. An annular groove 14 is provided on the ring 5. When the spring 11 is in a compressed state, the limiting block 13 will be inserted into the annular groove 14 under the action of the spring 11. Since the annular groove 14 blocks the limiting block 13, the connection function between the hook 3 and the tension detection column 2 is completed.

[0034] In addition, one end of the spring 11 is fixedly connected to the limiting block 13, and the other end of the spring 11 is fixedly connected to the fixing plate 4 to prevent the limiting block 13 from falling out of the limiting groove 12.

[0035] Without the inclined groove 15, the limiting block 13 needs to be manually inserted into the limiting groove 12 to separate the hook 3 from the fixing block 6. The ring 5 has an inclined groove 15 that can accommodate the limiting block 13. When the limiting block 13 is aligned with the inclined groove 15, the fixing plate 4 is pulled down, and the limiting block 13 will be squeezed into the annular groove 14 by the inclined groove 15. At this time, the limiting block 13 can be removed from the annular groove 14, thereby completing the separation of the hook 3 and the tension detection column 2.

[0036] It is worth noting that the ring 5 can rotate outside the cylinder 10. A rotating block 7 is fixed on the ring 5, which makes it easy to rotate the ring 5 by rotating the ring 5 so that the inclined groove 15 on the ring 5 is aligned with the limiting block 13, or so that the limiting block 13 is not aligned with the inclined groove 15.

[0037] Among them, the model of the tensile testing instrument body 1 is AMF digital push-pull force gauge.

[0038] Furthermore, one end of the limiting block 13 is set with an inclined surface, and the inclined surface faces the side of the ring 5. When the tension detection column 2 and the hook 3 are aligned and connected, the inclined surface of the limiting block 13 will be squeezed by the fixing block 6 and enter the limiting groove 12. There is no need to manually press the limiting block 13 into the limiting groove 12.

[0039] When the operator needs to disassemble or assemble the hook 3, the slot 9 on the hook 3 is aligned with the insertion post 8 at the bottom of the fixing block 6 and inserted. The inclined surface of the limiting block 13 is squeezed by the fixing block 6 and enters the limiting groove 12. At the same time, the spring 11 is squeezed. When the limiting block 13 reaches the annular groove 14, under the action of the spring 11, the limiting block 13 will be inserted into the annular groove 14. Since the annular groove 14 blocks the limiting block 13, the connection function between the hook 3 and the tension detection post 2 is completed. When the hook 3 needs to be removed, the ring 5 is rotated by the rotating block 7 so that the inclined groove 15 on the ring 5 is aligned with the limiting block 13. At this time, the hook 3 is pulled, and the limiting block 13 is squeezed into the annular groove 14 by the inclined groove 15. At this time, the limiting block 13 can be removed from the annular groove 14, thereby completing the separation of the hook 3 and the tension detection post 2.

[0040] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all possible embodiments. However, any obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A tensile force testing device for mechanical measurement, characterized in that, include: The tensile testing instrument body (1) is provided with a tensile testing column (2) at the bottom end of the tensile testing instrument body (1); A hook (3) is located at the bottom of the tensile testing column (2). The hook (3) is connected to the tensile testing column (2) by a limiting mechanism, wherein the limiting mechanism can quickly fix the hook (3) and the tensile testing column (2). The limiting mechanism includes a fixing plate (4) fixed on both sides of the hook (3). The fixing plate (4) has a limiting groove (12) on the side facing the cylinder (10). A limiting block (13) is provided in the limiting groove (12). The limiting block (13) can slide in the limiting groove (12). A spring (11) is provided in the limiting groove (12). A ring (5) is sleeved on the outside of the cylinder (10). An annular groove (14) is provided on the ring (5).

2. The tensile force testing device for mechanical measurement as described in claim 1, characterized in that: The bottom of the tensile testing column (2) is fixed with a cylinder (10), and the bottom of the cylinder (10) is fixed with a fixing block (6). The hook (3) is inserted into the fixing block (6).

3. The tensile force testing device for mechanical measurement as described in claim 2, characterized in that: The bottom of the fixing block (6) is fixed with a plug (8), and the top of the hook (3) is provided with a slot (9), and the plug (8) can be inserted into the slot (9).

4. The tensile force testing device for mechanical measurement as described in claim 1, characterized in that: One end of the spring (11) is fixedly connected to the limiting block (13), and the other end of the spring (11) is fixedly connected to the fixing plate (4).

5. The tensile force testing device for mechanical measurement as described in claim 4, characterized in that: The ring (5) has a groove (15) that can accommodate the passage of the limiting block (13).

6. The tensile force testing device for mechanical measurement as described in claim 5, characterized in that: The ring (5) can rotate outside the cylinder (10), and a rotating block (7) is fixed on the ring (5).

7. A tensile force testing device for mechanical measurement as described in claim 6, characterized in that: The limiting block (13) has an inclined surface at one end, and the inclined surface faces the side of the ring (5).

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